СВЕТОДИОДНЫЙ МОДУЛЬ С ПАССИВНЫМ СВЕТОДИОДОМ

1. Светодиодный модуль (1), состоящий из нескольких расположенных на печатной плате (75) светодиодов (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89), которые имеют соответственно так называемую укладку с линзой (100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113), которыми соответствующий светодиод (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89) выступает из плоскости печатной платы, причем светодиоды (76-89) связаны соответственно с элементом (30, 31, 32, 33) ввода светового излучения световодного тела (2), и посредством соответственно соотнесенного элемента (30, 31, 32, 33) ввода светового излучения соответствующий световой поток соотнесенных светодиодов (76-89) излучается наружу из светодиодного модуля (1),отличающийся тем, чтона печатной плате (75) для светодиодов (76-89) предусмотрен по меньшей мере один пассивный светодиод (95, 96, 97), который выполнен с возможностью активации при выходе из строя одного из светодиодов (76-89), и что испускаемый пассивными светодиодами (95, 96, 97) световой поток (стрелки 3 и 4) проникает в элемент (30, 31, 32, 33) ввода светового излучения соответствующего светодиода (76-89) и посредством элемента (30, 31, 32, 33) ввода светового излучения излучается наружу.2. Светодиодный модуль по п.1, отличающийся тем, что предусмотрено несколько пассивных светодиодов (95, 96 или же 97), которые соотнесены с несколькими светодиодами (78, 79, 80, 81, 89, или же 76, 77, 83, 87, 88, или же 82, 84, 85, 86) с их элементами (30, 31, 32, 33) ввода светового излучения, и что соответствующий пассивный светодиод (95, 96 или же 97) выполнен с возможностью активации при выходе из строя одного из соответственно соотнесенных светодиодов (78, 79, 80, 81, 89, или же 76, 77, 83, 87, 88, или же 82, 84, 85, 86). РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H05B 33/08 (13) 2012 147 701 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012147701/07, 02.04.2011 (71) ...

ЭЛЕКТРОЛЮМИНЕСЦЕНТНОЕ УСТРОЙСТВО СО СХЕМОЙ ОБНАРУЖЕНИЯ КОРОТКОГО ЗАМЫКАНИЯ

SCHALTUNG UND VERFAHREN ZUM DETEKTIEREN EINES AUSFALLS EINER LED-LAMPE

Es wird eine LED-Ausfalldetektionsschaltung zum Detektieren eines Ausfalls mindestens einer LED bereitgestellt. Die Schaltung kann umfassen: einen Testspannungsgenerator zum Anlegen mindestens eines Testspannungspegels an die mindestens eine LED, wobei der mindestens eine Testspannungspegel kleiner als ein Nennbetriebsspannungsbereich ist; eine Strommessschaltung zum Messen mindestens einer Stromaufnahme durch die mindestens eine LED bei dem mindestens einen Testspannungspegel; und eine Verarbeitungsschaltung, die mit dem Testspannungsgenerator gekoppelt ist, um zu bewirken, dass der mindestens eine Testspannungspegel an die mindestens eine LED angelegt wird, wobei die Verarbeitungsschaltung mit der Strommessschaltung gekoppelt ist, um einen Ausfall der mindestens einen LED zu detektieren, wenn die mindestens eine gemessene Stromaufnahme ein Profil aufweist, das nicht einem erwarteten Stromaufnahmeprofil entspricht.

Lichtanlage für Kraftfahrzeuge

The invention relates to a lighting system for motor vehicles, comprising a power source and a power monitoring circuit (4A) for controlling the function of at least one lamp, said lamps being filament lamps (1) and/or light-emitting diodes (2). In order to simulate a filament lamp, at least one electrical load (5) is provided in a power branch disposed in parallel to the lamps (1, 2) that can only be connected for a limited time window (T1). Said time window for connecting the load is synchronized with a control time window of the power monitoring circuit (4A).

ANSTEUERSCHALTUNG FÜR LED UND ZUGEHÖRIGES BETRIEBSVERFAHREN

Verfahren zum Betreiben einer Beleuchtungseinrichtung eines Fahrzeugs

Die vorliegende Erfindung betrifft ein Verfahren zum Betreiben einer Beleuchtungseinrichtung (10) eines Kraftfahrzeugs. Die Beleuchtungseinrichtung (10) umfasst mindestens eine Halbleiterlichtquelle (18), insbesondere eine Leuchtdiode, die mittels eines pulsweitenmodulierten Signals (I) mit einem vorgebbaren Tastverhältnis (d) zwischen Impulsdauer (TE). und Periodendauer (T) betrieben wird. Die Halbleiterlichtquelle (18) durchläuft zu vorgebbaren Zeitpunkten eine Diagnose wobei die Halbleiterlichtquelle (18) während der gesamten Dauer der Diagnose mit einem Impuls (TE0) des pulsweitenmodulierten Signals (I) beaufschlagt wird. Die, Halbleiterlichtquelle (18) wird während der Diagnose in einem von einem Normalbetrieb (34) der Halbleiterlichtquelle (18) abweichenden Diagnosebetrieb (32) betrieben, wobei während des Diagnosebetriebs (32) die Periodendauer (T0) des pulsweitenmodulierten Signals (I) größer gewählt wird als die Periodendauer (T) während des Normalbetriebs (34).

Schaltungsanordnung zum Speisen und Überwachen einer Leuchtdiodenanordnung

Schaltungsanordnung, die eingerichtet ist, ein Verfahren zum Speisen und Überwachen einer Leuchtdiodenanordnung, welche eine Serienschaltung von zumindest zwei Leuchtdioden (D1, D2 ... Dn) aufweist, auszuführen, bei welchem die zumindest eine Serienschaltung von einer Stromquelle (2) mit einem Strom (IS) gespeist wird, die Gesamtspannung (UG) an der Serienschaltung gemessen und mit einer Schwellenspannung wiederkehrend verglichen wird und ein Kurzschluss zumindest einer Leuchtdiode angezeigt wird, falls die aktuelle Gesamtspannung (UGA) die Schwellenspannung (US) unterschreitet, die Gesamtspannung (UG) der zumindest einen Serienschaltung von zumindest zwei Leuchtdioden (D1, D2 ... Dn) bei intakten Leuchtdioden in einer Initialisierungsphase gemessen und der gemessene Spannungswert (UGI) abgespeichert wird, aus dem abgespeicherten Spannungswert durch Multiplizieren mit einem Faktor k die Schwellenspannung (US) ermittelt wird, diese Schwellenspannung für den wiederkehrenden Vergleich im Betrieb ...

Monitoring of LED type displays to ensure they are operating correctly, e.g. for signal displays used with railway switching and control, by monitoring the current drawn by individual display units and the whole unit

An electronically protected power supply to a circuit assemblies (21-25) and sequential comparators (31-35) in which a supply current (IR) is monitored to determine if it falls below or above threshold values. An overall comparator (4) is provided to determine if the total current exceeds or falls below reference thresholds. Dependent on the individual and group comparisons corresponding result values ER and EG are generated. According to their valves power supply can be reduced or increased. The invention also relates to a corresponding display for display of time-varying information made up of an array of LEDs.

Trailer and bulb failure detection

The invention provides a lighting interface 21 between a vehicle (1, Figure 1A) and a trailer (2, Figure 1A) with a plurality of lighting circuits 22, 23, 24 powered by the vehicle, which preferably comprise at least a stop signal circuit 22 and direction indicator circuits 23, 24. The vehicle preferably detects the presence of the trailer by detecting a path to ground through a bulb or LED of at least one of the lighting circuits 22, 23, 24. Interface 21 preferably comprises circuitry providing a path to ground for each circuit within a predetermined resistance range, irrespective of the condition of the lighting circuit. Preferably a resistor (100, Figure 4B) is provided to simulate the load of a filament bulb if LEDs are provided in a lighting circuit; advantageously, the resistor is bypassed if a filament bulb is used. A MOSFET (63, Figure 6A) may be provided to switch to a high resistance path if a fault, such as a failed bulb or LED or an overload, is detected.

Apparatus for the control of lighting and associated methods

Devices, systems, and methods for maintaining light intensity in a gateway based lighting system

LIGHTING SYSTEM FOR MOTOR VEHICLES

PROCEDURE AND SYSTEMS FOR LIGHTING UP ENVIRONMENTS

PROCEDURE AND CIRCUIT FOR THE MONITORING OF VEHICLE LIGHTING WITH LAMP SIMULATION

LIGHTING MECHANISM

DIAGNOSTIC SYSTEM FOR AN LED LIGHT IN A MOTOR VEHICLE

Treiberschaltung für Leuchtmittel, insbesondere LEDs

The invention relates to a driver circuit (1) for lighting means, particularly for one or more LEDs, comprising: a circuit (20) which can be supplied with a voltage (Vdc), is clocked by means of at least one switch (LS, HS) and feeds a resonant circuit (21); a transmitter (22) which follows said resonant circuit (21) and transmits electrical energy from a primary winding (L1) to a secondary winding (L2), said resonant circuit (21) being coupled to the primary winding (L1) and the lighting means being able to be supplied with current from the secondary winding (L2); and a control unit (9) to which are fed back an actual current signal (S_iLLC) that reproduces the current (iLLC) through the resonant circuit (21), and an actual voltage signal (VL1) that reproduces the voltage applied to the primary winding (L1), said control unit (9) being designed to determine an indirect reproduction of the secondary side current on the basis of the actual current signal (S_iLLC) and actual voltage signal ...

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

Color based half-life prediction system

A system and method for controlling lighting systems and predicting a life expectancy of a plurality of lighting devices are disclosed. The system may include at least one gateway that controls dimming levels of the lighting devices, and at least one of a plurality of luminaires and LEDs that communicates with the gateway via a dimming control interface. The system may further include a sensor subsystem that senses color channels and monitors at least one change in environment in real time, and at least one power meter that measures power in real time, each of which is connected to the gateway. At least one server may be connected to the gateway, and may calculate and predict lumen depreciation of the luminaires and LEDs, and reporting and changing display information associated with the luminaires and LEDs.

An LED driver method for traffic lanterns

Led lamp

DEVICE OUTAGE DETECTOR

A device outage detector (310), comprising: a microcontroller (430); a plurality of shunt resistors (RS1, RS2,..., RSN), each connected to at least one of a plurality of vehicle elements (170, 180, 190); a current sensor (410) configured to measure a plurality of instantaneous currents passing through the plurality of shunt resistors (RS1, RS2,..., RSN), respectively; and a voltage sensor (420) configured to measure a plurality of instantaneous voltages across the plurality of shunt resistors (RS1, RS2,..., RSN), respectively, wherein the microcontroller (430) is configured to issue a warning for a given shunt resistor (RS1, RS2,..., RSN) if its corresponding instantaneous current is below the first threshold value and its instantaneous voltage is zero, or if its corresponding instantaneous current is above a second threshold value.

LONG LIFE, FAIL SAFE TRAFFIC LIGHT

A light signal circuit comprising: an AC to direct current (AC-DC) converter for coupling to an AC power supply; a controller in communication with the AC-DC converter; one or more LEDs coupled to the AC-DC converter; an under-current and under voltage sensing circuit coupled to the one or more LEDs; and a failed state impedance circuit coupled to the under current and under voltage sensing circuit and the control circuit.

UNDERWATER LED LIGHT WITH REPLACEMENT INDICATOR

Disclosed is a method of determining depreciation of a lumen output of an LED. More particularly, disclosed is a method of determining depreciation of a lumen output of an LED comprising monitoring, by a processing device, an operating characteristic of an AC power source operatively coupled to the LED; determining, by the processing device, whether a lumen output the LED depreciated beyond a specified lumen value based on the monitoring; and causing, by the processing device, an indicator to provide notification to a user based on determining the lumen output of the LED depreciated beyond the specified lumen value.

LONG LIFE, FAIL SAFE TRAFFIC LIGHT

The present disclosure is directed to a method for detecting a failure in a signal light. In one embodiment, the method includes monitoring operation of one or more light emitting diodes (LEDs) of the signal light coupled to a constant current driver, detecting a short circuit in at least one of the one or more LEDs and signaling a failure in the signal light when the short circuit is detected.

LED LAMP WITH A FAULT-INDICATING EMPEDANCE-CHANGING CIRCUIT

In a light-emitting-diode lamp, there is provided a circuit for simulating a low input impedance when the light-emitting-diode lamp is turned off. This low input impedance simulating circuit comprises a shunt circuit section, and a detector circuit section. The shunt circuit section includes a low impedance element and a controllable switching device connected in series. The detector circuit section detects turning off of the light-emitting-diode lamp and, in response to such detection, close the switching device to thereby cause electric current to flow through the shunt circuit section in order to simulate lower input impedance of the light-emitting-diode lamp. When the light-emitting-diode lamp replaces a conventional traffic signal incandescent lamp, the low input impedance simulating circuit prevents the conflict monitor of the already installed traffic-light lamp system to detect a high lamp impedance and accordingly a faulty lamp.

Signaling lamp monitor

This signaling lamp monitor is configured to readily allow the addition of a communication function to signaling lamps such as stack lights at low costs. This signaling lamp monitor comprises a detection unit for detecting light emitted from a signaling lamp, a control unit that generates a detection signal on the basis of at least said detection, and a transmission unit for transmitting the detection signal via wireless communication. The transmission unit is equipped with an antenna disposed vertically upward from the detection unit.

Power supply

Location independent lighting sensor system

A system for sensing luminaire properties and controlling luminaire performance independently of the location, distance or orientation of the sensors relative to the source luminaire device that is being sensed. Thus, the installer and the maintenance crew are freed from issues and activities associated with sensor installation.

Led Lamp

A LED lamp with an integrally build-in a function for preannouncement end of life time in a LED lamp per se and to realize the LED lamp having such function with simple construction and at low cost. The LED lamp system has an alternating current power source connecting portion for receiving an alternating current, a power source converting portion for receiving the alternating current and rectifying the received alternating current for generating a direct current power, LED group consisted of a plurality of LEDs and received a direct current power output from the power source converting portion, the LED group having a life time preannouncement portion for integrating power supply period for issuing preannouncement indicative of approaching to the end of the life. The life time preannouncement portion includes counting means for measuring the power supply period on the basis of a frequency of the alternating power source, integrating means for integrating the power supply period measured ...

ENHANCEMENTS FOR LED LAMPS FOR USE IN LUMINAIRES

One example solid state lighting type lamp for a three-way luminaire includes a power source, a controller, an output stage, switching logic circuitry and multiple sets of light emitters. The logic circuitry receives input signals from tip and ring power contacts on a lamp base. The controller provides power from the power source to the output stage which is controlled by the switch logic circuitry to selectively apply power to different ones of the sets of light emitters responsive to the input signals. Each set of light emitters emit light having different color temperatures. In another three-way luminaire example, the control circuitry is configured to control drive current in a sequence to toggle the lamp consecutively between an OFF state and ON state in response to inputs from a three-way socket. Another type of lamp includes circuitry to permanently disable the lamp on detection of an end-of-life condition.

SYSTEMS AND METHODS FOR MONITORING OPERATION OF AN LED STRING

Methods and systems for monitoring operation of an LED string. An exemplary system includes an LED string, a circuit that supplies current to the LEDs, a current measuring circuit that measures current through the LEDs, a voltage measuring circuit that measures voltage across the LEDs, and a temperature sensor that measures temperature proximate to the LEDs. A processor calculates a predicted string voltage based on a predefined voltage-current curve, number of LEDs, a predefined temperature coefficient value, the measured string current, a measured junction temperature, a life curve function, a prestored calibration string current value, a prestored calibration string voltage value, a prestored junction calibration temperature and an accumulated time value. The process also calculates an error value based on the predicted string voltage and a measured string voltage and generates an indication that there is a failure in the LED string if the calculated error value is greater than the predefined ...

LIGHT AND METHOD FOR OPERATING A LIGHT

A light, in particular for testing workpiece surfaces using a fluorescent marking device, which light has at least two lighting elements that emit electromagnetic radiation with different wavelength ranges. The intensity with which the lighting element irradiates can be adjusted separately for at least one of the lighting elements. Expediently, the light is configured to increase or reduce the intensity of at least one of the lighting elements and at the same time to keep the intensity of at least one other of the lighting elements constant, or to reduce it or increase it in the opposite way to the first-mentioned lighting element. The light is configured to adjust the intensity at such a speed that the human eye can adapt to a change in the intensity during the adjustment without adverse effects on the person's sight.

СВЕТОДИОДНАЯ ЛАМПА

Изобретение относится к области техники. Техническим результатом является расширение области применения путем создания конструкции лампы с блоком предварительного сообщения срока службы. Светодиодная ламповая система имеет блок для соединения с источником питания переменного тока, преобразователь для формирования источника питания постоянного тока и светодиодную группу, состоящую из множества светодиодов. Светодиодная группа снабжена блоком предварительного сообщения срока службы, включающего в себя счетное средство для измерения периода подвода электропитания на основе частоты источника питания переменного тока, интегрирующее средство для подвода электропитания, измеряемого счетным средством, и запоминания интегрированной величины в энергонезависимом запоминающем устройстве и средство управления режимом подвода электропитания для управления свечением светодиодов в различных режимах, включая режимы обычного освещения. Блок предварительного сообщения предназначен для интегрирования периода ...

СВЕТОДИОДНЫЙ СВЕТОВОЙ СИГНАЛ

Изобретение относится к светодиодному (LED) световому сигналу, в частности железнодорожному LED световому сигналу c сигнализатором (1) для генерации световых точек различных цветов, причем LED выполнены как многоцветные LED, в частности RGB-LED (10)/красные (11)/желтые (12)/зеленые (13) LED. Технический результат - обеспечение возможности смешивания цветов и тем самым реализации большого количества вариантов цветов для повышения безопасности техники сигнализации. Сигнализатор (1) имеет по меньшей мере один оптический датчик (15, 15.1, 15.2) для сигнально-технически надежного контроля точки цветности и силы света, устройство (17, 17.1) оценки генерирует сигнал квитирования (5), зависимый от условий окружающей среды, и направляет его на пост (2) централизации, причем со стороны поста централизации генерируется управляющий сигнал (3) для подачи на сигнализатор (1), и предусмотрены средства для сравнения сигнала квитирования (5) с управляющим сигналом (3). 4 з.п. ф-лы, 7 ил.

Patent RU2016107489A3

ВИ“? 2016107489” АЗ Дата публикации: 02.04.2018 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2016107489/07(011825) 25.06.2014 РСТ/ЕК2014/051585 25.06.2014 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 1357696 02.08.2013 ЕК Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) СВЕТОДИОДНОЕ УСТРОЙСТВО Заявитель: РЕНО С.А.С., ЕК 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) НО5В 33/08 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) В23К 11/24, СОК 31/00, 31/26, 31/44, НО5В 33/00, 37/00, 37/02 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): РУУРТ, Езрасепе, Сооз]е Рав, 7-Р1аРаь К-РОМ, КРВГУ, РАТЕМТЗСОРЕ, РабЗеагсв, КОРТО, 5ГРО, ОЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к ...

ОСВЕТИТЕЛЬНЫЕ ПРИБОРЫ НА ОСНОВЕ СВЕТОДИОДОВ (LED) И СВЯЗАННЫЕ С НИМИ СПОСОБЫ ТЕПЛОВОГО УПРАВЛЕНИЯ

... 1. Осветительный прибор (100) на основе светоизлучающих диодов (LED), содержащий:по меньшей мере один LED (102);источник (106) энергии, сконфигурированный, чтобы обеспечивать электрическую энергию для LED;датчик (103) температуры, сконфигурированный, чтобы измерять температуру в выбранном местоположении в осветительном приборе (100); иконтроллер (104), подключенный между датчиком (103) температуры и источником (106) энергии и выполненный с возможностью вычислять температуру полупроводникового перехода по меньшей мере одного LED на основе измеренной температуры, чтобы определять ток возбуждения на основе вычисленной температуры полупроводникового перехода, который побуждает температуру полупроводникового перехода оставаться ниже предварительно определенного порогового значения, и обеспечивать входной сигнал источнику энергии для обеспечения определенного тока возбуждения.2. Осветительный прибор (100) на основе LED по п.1, в котором контроллер (104) дополнительно содержит память (105) для ...

Lamp operation apparatus for operating e.g. LED in lighting system, has test unit to measure voltage of LED or organic LED (OLED) by supplying small forward current, in order to check electrostatic discharge damages of LED or OLED

The operating apparatus has a test unit (2) for checking damages of LED (4) or organic LED (OLED) caused by electrostatic discharges (ESD), if start command is received from an external device. The test unit measures the voltage of LED or OLED by supplying small forward current, in order to check ESD damages of LED or OLED. A storage unit stores the checked result and a display unit (6) displays the checked result.

Verfahren zum Betreiben eines Lichtmoduls und Lichtmodul

Es wird ein Verfahren zum Betreiben eines Lichtmoduls (2) für ein Kraftfahrzeug beschrieben. Das Lichtmodul (2) umfasst eine Laserlichtquelle (4), ein Photolumineszenzelement (6) und eine Detektionseinrichtung (8). Ein Primärlichtbündel (14) wird mit der Laserlichtquelle (4) ausgestrahlt. Das Primärlichtbündel (14) wird intensitätsmoduliert. Eine Sekundärlichtverteilung (16) wird ausgestrahlt. Die Sekundärlichtverteilung umfasst intensitätsmoduliertes Mischlicht (18). Mittels der Detektionseinrichtung (8) wird ein Fehlerzustand des Lichtmoduls (2) in Abhängigkeit von dem auf die Detektionseinrichtung (8) auftreffenden intensitätsmodulierten Mischlicht (18) detektiert.

VERKEHRSLICHTSIGNAL

Ausgleichseinheit

Ausgleichseinheit (2), die dazu bestimmt ist, zwischen eine Steuereinheit (4) zur Lampendefekterkennung unter Verwendung von Testimpulsen (6) und mindestens eine LED-Lampe (8) mit mindestens einer Leuchtdiode (LED) geschaltet zu werden,und die ein Gehäuse (10) umfasst, das zur Umschließung und zum Schutz von Komponenten, die im Gehäuse montiert sind (8), dient,und die mit einer Eingangs-Anschlussleitung (12) zum Anschluss an eine Stromleitung (14) ausgestattet ist, die an die Steuereinheit (4) angeschlossen ist, und mit einer Ausgangs-Anschlussleitung (16) zum Anschluss an eine Stromleitung (18) ausgestattet ist, die an die LED-Lampe (8) angeschlossen ist, wobei die Eingangs- und Ausgangs-Anschlussleitungen (12, 18) durch die Wand (20) des Gehäuses (10) in einer oder zwei Durchführungsöffnung/en (22, 24) verlaufen und das Gehäuse (10) mit einem Erdungspunkt (26) zum Anschluss an das Erdungspotenzial ausgestattet ist,dadurch gekennzeichnet, dass die genannten Komponenten eine Kondensatoreinheit ...

Lamp failure warning device

Signal lamps and apparatus

Color based half-life prediction system

Devices, systems, and methods for maintaining light intensity in a gateway based lighting system

LED LIGHT

LIGHT SIGNAL PLANT AS WELL AS PROCEDURE FOR SUPERVISING THE LIGHT SIGNAL PLANT

Leuchtdiodenanordnung

Bei einer Leuchtdiodenanordnung (1) umfassend eine Serienschaltung (11) aus wenigstens einer ersten Leuchtdiode (2) und einer zweiten Leuchtdiode (3), wobei ein erster Anschluss (21) der ersten Leuchtdiode (2) wenigstens mittelbar mit einem ersten Anschluss (41) einer Konstantstromquelle (4) verbunden ist, wobei die Leuchtdiodenanordnung (1) eine erste Überwachungsschaltung (5) zur Kurzschlussüberwachung aufweist, welche erste Überwachungsschaltung (5) schaltungstechnisch parallel zu den wenigstens zwei Leuchtdioden (2,3) angeordnet ist, wobei ein erster Anschluss (51) der ersten Überwachungsschaltung (5) mit dem ersten Anschluss (41) der Konstantstromquelle (4) verbunden ist, und wobei ein zweiter Anschluss (52) der ersten Überwachungsschaltung (5) mit Masse verbunden ist, wird vorgeschlagen, dass die erste Überwachungsschaltung (5) eine Serienschaltung aus jeweils abwechselnd schaltungstechnisch aufeinander folgenden Transistoren (61 ,65,69) und Widerständen (71, 75, 79) aufweist, dass ...

LIGHT SIGNAL PLANT, IN PARTICULAR FOR the traffic

SCHALTUNGSANORDNUNG MIT EINER LED-ANORDNUNG

The circuit device has an LED device with a number of parallel LED chains and a disconnection circuit provided by an electronic device (EV) detecting a fault in the LED device for automatic disconnection from the supply voltage (Uv) via an electronic switch element (FET), e.g. a transistor connected in series with the current path of the LED device. An Independent claim for a method for disconnection of an LED device is also included.

Method for driving a LED of a direction indicator

Verfahren zur Ansteuerung von in einer Reihe angeordneter LEDsi (Light Emitting Diodes; i=1-12) eines Fahrtrichtungsanzeigers für Heckleuchten, sowie eine entsprechende Heckleuchte, wobei die LEDsi einzeln oder in LED-Gruppen (n, n=1-6) nacheinander von einem ersten Ende beginnend eingeschaltet werden und zumindest so lange eingeschaltet bleiben, bis die letzte LEDsi oder LED-Gruppe (n) am zweiten Ende der in einer Reihe angeordneten LEDsi eingeschaltet ist. Hierbei wird vorgeschlagen, dass die LEDsi einzeln oder in LED-Gruppen (n) prozessorgesteuert nacheinander vom ersten Ende beginnend ausgeschaltet werden und ausgeschaltet bleiben, bis die letzte LEDsi oder LED-Gruppe (n) am zweiten Ende ausgeschaltet ist. Daraus ergibt sich eine geringere Belastung einer jeden LEDi und somit ein längere Lebensdauer der erfindungsgemäßen Heckleuchte, sowie ein optisch überaus ansprechender Blinkeffekt.

PROCEDURE FOR THE ADMINISTRATION OF AN INDICATOR FOR AIRPLANE

LIGHT SIGNAL TO THE TRAFFIC CONTROL AND PROCEDURE FOR THE FUNCTIONAL MONITORING OF SUCH AN INDICATION

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

LIGHTING SYSTEM FOR MOTOR VEHICLES

METHODS AND SYSTEMS FOR ILLUMINATING ENVIRONMENTS

A LED display system

The present invention relates to a LED display system (10) including a panel (12) and detecting means (20). The LED display system (10) also includes means (14) for selectively varying power supply to the panel (12). The panel (12) has an array of LEDs. The detecting means (20) is adapted to activate or deactivate one or more of the LEDs.

ERROR DETECTION SYSTEM AND METHOD IN A VEHICLE LIGHTING SYSTEM

A vehicular error detection system is provided, comprising: a plurality of light circuits in a vehicle, each light circuit including a light and being associated with a corresponding unique identifier; a system controller located in the vehicle and configured to control operation of the light circuits; a plurality of wires connecting the light circuits to the system controller such that at least one wire is attached to each of the plurality of light circuits; a plurality of lighting error detectors each configured to detect a malfunctioning light from among corresponding lights in the light circuits, and configured to transmit an error message to the system controller when the malfunctioning light is detected, wherein each of the lighting error detectors transmits an error message to the system controller when the lighting error detector detects the malfunctioning light, and the error message includes the corresponding unique identifier of the malfunctioning light.

LED PAPI WITH CONDENSATION PROTECTION

In accordance with an example embodiment, there is disclosed herein a LED PAPI (10) with condensation protection. The condensation protection may suitably comprise passive components, such as gaskets and seals (26, 36) and a desiccant (48), and/or active components, such as a defroster (39) and/or a heater (50).

DIAGNOSTIC CIRCUIT VOLTAGE CONTROLLED MATRIX LIGHT SOURCE FOR A MOTOR VEHICLE

Compensation unit

Flexible electrical connection of an LED-based illumination device to a light fixture

An electrical interface module (EIM) is provided between an LED illumination device and a light fixture. The EIM includes an arrangement of contacts that are adapted to be coupled to an LED illumination device and a second arrangement of contacts that are adapted to be coupled to the light fixture and may include a power converter. Additionally, an LED selection module may be included to selectively turn on or off LEDs. A communication port may be included to transmit information associated with the LED illumination device, such as identification, indication of lifetime, flux, etc. The lifetime of the LED illumination device may be measured and communicated, e.g., by an RF signal, IR signal, wired signal or by controlling the light output of the LED illumination device. An optic that is replaceably mounted to the LED illumination device may include, e.g., a flux sensor that is connected to the electrical interface.

Light emitting diode (led) driver for reporting channel-operating state in binary mode

Light-emitting module and display device comprising same

A light-emitting module and a display device including the same are disclosed. In an embodiment a light-emitting module includes a plurality of emission regions configured to emit light, at least one first emission region and at least one second emission region of a first type configured to emit light of a first color locus and at least one first emission region and at least one second emission region of a second type configured to emit light of a second color locus and a control device for supplying the emission regions with current, wherein the emission regions are arranged on a common semiconductor chip, wherein the first color locus is different from the second color locus, wherein the first and second emission regions of the first type are adjacent to one another, and wherein the first and second emission regions of the second type are adjacent to one another.

Method and apparatus for measuring forward voltage drop of light emitting element, light source apparatus, and thermal printer

An optical fixing device is provided with a light emitting element array that consists of a plural number of LEDs connected in a matrix. The LEDs are connected in serial to each other in each column, and the LED columns are connected in parallel to each other. Transistors are connected in serial to the LED columns respectively, so as to turn the associated LED columns ON or OFF. A capacitor is connected in parallel to the LED columns. After the capacitor is charged by turning a switch ON, selected one of the LED columns is turned ON, to discharge the capacitor through the selected LED column. Based on a voltage across the capacitor at the completion of discharging, a forward voltage VFL across the selected LED column is measured.

Deterioration sensing device for light-emitting diode

A deterioration sensing device comprises a laser diode (LD), a voltage-current converter supplying electric current to the LD to radiate a laser beam which is received by a photo-diode, and an APC circuit outputting electric voltage in accordance with the intensity of the laser beam sensed by the photo-diode. The voltage-current converter is controlled based on the electric voltage so that the intensity of the laser beam is kept constant. An LD deterioration circuit is provided with a comparator, in which the electric voltage is compared with a reference voltage. An LD deterioration control unit is provided in the LD deterioration circuit to output a deterioration signal when the electric voltage becomes higher than the reference voltage, so that an alarm, indicating that the LD has deteriorated, is output, and the electric current supplied to the LD is decreased.

Channel Detection Device

A channel detection device is disclosed in specification and drawing, where the channel detection circuit includes a disable circuit, LED pins, receivers and an error detection circuit. The disable circuit sends a disabling pulse to one or some LED pins of the plurality of LED pins, where the one or some LED pins are connected to the disable circuit. Each of the receivers is connected to one of the plurality of LED pins respectively and is capable of outputting an inhibiting signal when the LED pin connected receives the disabling pulse from the disable circuit. The error detection circuit is coupled to the receivers and the LED pins. The error detection circuit is configured to detect open-circuit of some LED pins of the plurality of LED pins, and bypass the detection of open-circuit of some other LED pin of which the receiver outputs the inhibiting signal.

RETROFIT LAMP AND A LIGHTING SYSTEM USING THE SAME

A retrofit lamp is to be used with a ballast. A shunt switch is provided in parallel with an output load and is adapted to shunt input terminals of the lamp using pulse width control so as to tune the current through the lighting element. This current control is used to enable compatibility with different ballasts and to provide dimming control. A detection circuit is used to detect an abnormal drive condition of the retrofit lamp and the pulse width control of the shunt switch can then be overridden by holding the shunt switch at a stable state for a certain duration. This prevents overload conditions and avoids DC signals in the event of component failures.

Solid state transducers with state detection, and associated systems and methods

Solid state transducers with state detection, and associated systems and methods are disclosed. A solid state transducer system may include a support substrate that carries a solid state emitter and a state device. The solid state emitter and the state device may be stacked along a common axis. Further, the state device may be positioned to detect a state of the solid state emitter and/or an electrical path of which the solid state emitter forms a part. The solid state emitter may include a first semiconductor component, a second semiconductor component, and an active region between the first and second semiconductor components. The state device may include a state-sensing component having a composition different than that of the active region and the first and second semiconductor components. In some embodiments, the state-sensing component may include an electrostatic discharge protection device, a thermal sensor, a photosensor, or a combination thereof.

СХЕМА ФОРМИРОВАТЕЛЯ LED-ГИРЛЯНДЫ, ВКЛЮЧАЮЩАЯ В СЕБЯ ДИОД УПРАВЛЕНИЯ ЗАРЯДОМ ДЛЯ КОНДЕНСАТОРА

FIELD: electricity. SUBSTANCE: invention relates to an arrangement (1) for controlling at least one load (D1, D2, D3). In order to provide auxiliary power source extraction tool from the power source in order to control shunt switching, arrangement (1) circuit contains the input terminal (11) to connect to the power supply source (30), output terminal (12) to connect to at least one load element (20, 21, 22, 23), control circuit (10) containing control device (13) that is adapted to control at least one load element (20, 21, 22, 23), and device (C) of energy accumulation which is adapted to supply power to control device (13). In addition, a controlled bypass switch (M4) is provided. The said bypass switch (M4) and said control circuit (10) are connected in parallel and connected between said input terminal (11) and said output terminal (12). The circuit arrangement (1) is adapted to operate the bypass switch (M4) for controlling the power provided to the control circuit. EFFECT: reduction of plant losses. 14 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 644 562 C2 (51) МПК H05B 33/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H05B 33/08 (2006.01) (21)(22) Заявка: 2014142062, 08.03.2013 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): ФИЛИПС ЛАЙТИНГ ХОЛДИНГ Б.В. (NL) 13.02.2018 (56) Список документов, цитированных в отчете о поиске: US 2010181936A1, 22.07.2010. US 20.03.2012 US 61/613,121; 15.11.2012 US 61/726,624 (43) Дата публикации заявки: 10.05.2016 Бюл. № 13 2008315778 A1, 25.12. 2008. US 2010141153A1,10.06.2010. US 2010134018A1, 03.06.2010. US 2012025713A1, 02.02.2012. (45) Опубликовано: 13.02.2018 Бюл. № 5 (86) Заявка PCT: C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.10.2014 IB 2013/051841 (08.03.2013) (87) Публикация заявки PCT: 2 6 4 4 5 6 2 WO 2013/150399 (10.10.2013) R U 2 6 4 4 5 6 2 Приоритет(ы): (30) ...

СВЕТОВАЯ СИСТЕМА И СПОСОБ ОЦЕНКИ ОКОНЧАНИЯ СРОКА СЛУЖБЫ ПО МЕНЬШЕЙ МЕРЕ ОДНОЙ ЕЕ ЛАМПЫ

Изобретение относится к световой системе, содержащей, по меньшей мере, одну лампу. Кроме того, изобретение относится также к способу оценки окончания срока службы по меньшей мере одной лампы этой световой системы. Техническим результатом является обеспечение оценки срока службы лампы, для которой не требуется никаких локальных датчиков в лампе. Результат достигается тем, что световая система (100) содержит по меньшей мере одну лампу (10) и блок (20) обработки для оценки окончания срока службы по меньшей мере одной лампы (10). Блок (20) обработки выполнен с возможностью получения продолжительности горения лампы, в течение которой включена по меньшей мере одна лампа, а также предсказанной температуры в выбранный период времени в местоположении по меньшей мере одной лампы. Блок (20) обработки выполнен с возможностью оценки окончания срока службы по меньшей мере одной лампы на основании продолжительности горения лампы и предсказанной температуры. При использовании предсказанной температуры ...

СРЕДСТВО ЗАЩИТЫ ДЛЯ ОБЕСПЕЧЕНИЯ БЕЗОПАСНОСТИ ОСВЕТИТЕЛЬНОГО УСТРОЙСТВА

Предложено средство защиты для обеспечения безопасности осветительного устройства. Измеряют электрический параметр путем возбуждения осветительного устройства с конкретными уставками возбуждения и сравнивают его с оценочным ожидаемым значением электрического параметра таким образом, что в случае обнаруженного системного отказа могут быть обеспечены выдача сигнала предупреждения об опасности или отключение. 3 н. и 10 з.п. ф-лы, 6 ил.

СХЕМА ФОРМИРОВАТЕЛЯ LED-ГИРЛЯНДЫ, ВКЛЮЧАЮЩАЯ В СЕБЯ ДИОД УПРАВЛЕНИЯ ЗАРЯДОМ ДЛЯ КОНДЕНСАТОРА

1. Компоновка (1) схемы для управления, по меньшей мере, одной нагрузкой (D1, D2, D3, 23), содержащая, по меньшей мере:- входную клемму (11) для соединения с источником (30) электропитания,- выходную клемму (12) для соединения, по меньшей мере, с одной схемой, содержащей нагрузку (20, 21, 22, 23),- управляющую схему (10), содержащую- устройство (13) управления, которое приспособлено управлять, по меньшей мере, одной схемой, содержащей нагрузку (20, 21, 22, 23), и- устройство (C) накопления энергии, которое приспособлено подавать мощность к устройству (13) управления, и- управляемый обходной переключатель (M4), при этом- упомянутый обходной переключатель (M4) и упомянутая управляющая схема (10) соединены параллельно и подключены между упомянутой входной клеммой (11) и упомянутой выходной клеммой (12), и- компоновка (1) схемы приспособлена, чтобы задействовать обходной переключатель (M4) для управления мощностью, предоставляемой управляющей схеме (10).2. Компоновка схемы по п. 1, при этом компоновка (1) схемы приспособлена, чтобы размыкать обходной переключатель (M4), если уровень заряда устройства (C) накопления энергии соответствует нижнему пороговому значению, и замыкать обходной переключатель (M4), если упомянутый уровень заряда соответствует верхнему пороговому значению.3. Компоновка схемы по любому из предшествующих пунктов, при этом устройство (13) управления приспособлено, чтобы управлять обходным переключателем (M4).4. Компоновка схемы по любому из пп. 1 и 2, при этом устройство (13) управления приспособлено, чтобы выборочно управлять множеством схем, содержащих нагрузку (20, 21, 22, 23).5. Компоновка схемы по п. 4, при этом устройство (13) управления приспособлено, чтобы выборочно управлять LED-модулями (D1, D2, D3) многоцветной LED-лампы.6. Компоновка схемы по п. 5, при этом устройство (13) упр РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H05B 33/08 (13) 2014 142 062 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ ( ...

Beleuchtungsvorrichtung und Beleuchtungssystem für ein Kraftfahrzeug sowie Verfahren zum Betreiben eines Beleuchtungssystems für ein Kraftfahrzeug

Eine Beleuchtungsvorrichtung (10) für ein Kraftfahrzeug (100) umfasst ein Verarbeitungsmodul (1), welches dazu ausgebildet ist, Signale von einem Datenbus (6) des Kraftfahrzeugs (100) zu empfangen, zu verarbeiten und zu versenden. Die Beleuchtungsvorrichtung (10) umfasst weiter eine LED-Einheit (3), welche dazu ausgebildet ist, in einem betriebsgemäßen Zustand Licht mit einstellbarer Helligkeit und vorgegebenem Farbort zu emittieren, wobei die LED-Einheit (3) einen Mikrocontroller (4) und eine Mehrzahl von LEDs (301, 302, 303, 304) aufweist und wobei der Mikrocontroller (4) und die LEDs (301, 302, 303, 304) von einem Gehäuse (7) der LED-Einheit (3) umgeben sind. Die LED-Einheit (3) ist weiter dazu ausgebildet, bidirektional mit dem Verarbeitungsmodul (1) zu kommunizieren, sodass mittels der LED-Einheit (3) und des Verarbeitungsmoduls (1) ein aktueller Statuswert der LED-Einheit (3) ermittelbar ist, welcher repräsentativ für eine Funktionalität der LED-Einheit (3) ist.

Diagnosesystem für eine LED-Leuchte in einem Kraftfahrzeug

Schaltungsanordnung für ein Fahrzeugbordnetz zum Simulieren von Blinkleuchten mit Glühlampen bei einer Verwendung von Blinkleuchten mit Leuchtdioden

Schaltungsanordnung (2) für ein Fahrzeugbordnetz zum Simulieren von Leuchten mit Glühlampen bei einer Verwendung von Leuchten (3) mit Leuchtdioden- mit zwei eingangsseitigen Anschlüssen (21, 22) mit denen die Schaltungsanordnung an von einem Steuergerät (1) bereitgestellte Spannungen und/oder Strom anschließbar ist, wobei das Steuergerät (1) während einer Einschaltphase der Leuchte (3) eine Spannung zur Erzeugung von Licht (Lichtspannung) durch die Leuchte (3) und während einer Ausschaltphase der Leuchte (3) eine Spannung und/oder ein Strom zur Funktionsüberprüfung der Leuchte (3) (Überprüfungsspannung, Überprüfungsstrom) erzeugt,- mit zwei ausgangseitigen Anschlüssen (23, 24) an welche eine Leuchte (3) anschließbar ist und die mit den eingangsseitigen Anschlüssen (21, 22) verbunden sind,- mit einer Reihenschaltung aus einem Widerstandselement (25) und einem steuerbaren Schaltelement (26), die zwischen die eingangsseitige Anschlüsse (21, 22) geschaltet ist,- mit einer Schaltung (27) zum ...

Schaltungseinrichtung für die Ausfallerkennung von Leuchtdioden in einem Kraftfahrzeug

Schaltungseinrichtung für die Ausfallerkennung von Leuchtdioden in einem Kraftfahrzeug, umfassend mindestens einen mit dem Kfz-Bordnetz verbundenen Leuchtdiodenzweig mit mindestens einer Leuchtdiode (D1, D2, D3, D6, D7, D8) sowie Ausfallerkennungsmittel mit Schaltmitteln (X1, X3), die dazu eingerichtet sind, ein Potential in dem mindestens einen Leuchtdiodenzweig zu erfassen und dieses derart mit einem von der Spannung des Kfz-Bordnetzes abhängigen ersten Referenzpotential zu vergleichen, dass bei Ausfall mindestens einer der Leuchtdioden (D1, D2, D3, D6, D7, D8) in dem mindestens einen Leuchtdiodenzweig ein entsprechendes Ausfallerkennungssignal ausgegeben wird, wobei der mindestens eine Leuchtdiodenzweig über ein Stromregelmittel (S) mit dem Kfz-Bordnetz verbunden ist dadurch gekennzeichnet, dass die Ausfallerkennungsmittel Schaltmittel (X2) umfassen, die dazu eingerichtet sind, das Potential zwischen dem Stromregelmittel (S) und dem mindestens einen Leuchtdiodenzweig mit einem zweiten ...

Verfahren zur Fehlerüberwachung an einem Beleuchtungsausgang eines Kraftfahrzeuges

Bei einem Verfahren zur Fehlerüberwachung an einem Beleuchtungsausgang (3) eines Kraftfahrzeuges werden zunächst Referenz-Stromstärken bei verschiedenen Referenz-Spannungen gemessen und berechnet. Im Betrieb des Beleuchtungsausganges (3) werden Betriebs-Stromstärken und Betriebs-Spanungen erfasst. Weicht die Betriebs-Stromstärke bei der gemessenen Betriebs-Spannung von der Referenz-Stromstärke bei der entsprechenden Referenz-Spannung ab, wird eine Fehlermeldung ausgegeben. Dieses Verfahren eignet sich zur Erfassung eines Fehlers auch bei unbekannten Lampen (4, 5) am Beleuchtungsausgang (3).

Selbstreparierendes Beleuchtungssystem und Verfahren

Ein selbstreparierendes Beleuchtungssystem wird bereitgestellt, welches umfasst: eine Stromleitung; einen Masseleiter; einen ersten Beleuchtungsschaltkreis, der zwischen der Stromleitung und dem Masseleiter angeordnet ist, wobei der erste Beleuchtungsschaltkreis eine Vielzahl in Reihe zueinander angeordneter erster Leuchten sowie einen mit der Vielzahl erster Leuchten in Reihe angeordneten ersten Schalter aufweist; einen zweiten Beleuchtungsschaltkreis, der zwischen der Stromleitung und der Masse angeordnet ist, wobei der zweite Beleuchtungsschaltkreis eine Vielzahl in Reihe zueinander angeordneter zweiter Leuchten sowie einen mit der Vielzahl zweiter Leuchten in Reihe angeordneten zweiten Schalter aufweist; einen Detektor, welcher zur Detektion eines Betriebsparameters des selbstreparierenden Beleuchtungssystems vorgesehen ist; eine Steuerung, welche dazu vorgesehen ist, die ersten und zweiten Schalter in Abhängigkeit von dem Betriebsparameter zu betreiben.Der Betriebsparameter ist einer ...

Colour based half life prediction system

Led traffic signal with synchronized power pulse circuit

An improved LED traffic signal is provided. The LED traffic signal suitably includes a housing with an opening, a printed circuit board coupled to the housing, and a power supply system coupled to the printed circuit board. The power supply system includes a power supply module that receives an AC input voltage from an AC input line and transforms the AC input voltage into a DC voltage with a regulated current to power the LED load, and a synchronized power pulse circuit connected to the power supply that generates a synchronized power pulse representing a power consumption substantially equivalent to that of a halogen or incandescent traffic signal.

Circuit for Controlling Current to Light-Emitting Diode (LED)

The present invention discloses a current controlling circuit wherein the circuit ( 200 ) comprises a DC power source ( 202 ), an inductor ( 204 ), a N-channel Metal Oxide Semiconductor (NMOS) ( 206 ), one or more LEDs ( 208 ) connected in series, a first resistor (Rsense) and a switching arrangement ( 210 ). The positive terminal of the DC power source ( 202 ) is connected to the inductor ( 204 ) in series. The series of LED ( 208 ) is connected in series with the inductor ( 204 ) and the first resistor (Rsense). According to an embodiment the switching arrangement ( 210 ) comprises a second resistor (Rslt), a first switch ( 212 ) and a second switch ( 214 ). The second resistor (Rslt) is connected in series with the second switch ( 214 ) and connected in parallel with the first switch ( 212 ). The switching arrangement ( 210 ) is connected in series with the first resistor (Rsense) and the negative terminal of the DC supply ( 202 ).

Vehicle led lighting device

A vehicle LED lighting device includes a drive control means 51 includes an abnormality detection means 60 detecting a disconnection or short-circuit abnormality of the LED lamp, the abnormality detection means 60 includes a current detection unit 61 detecting the value of a current flowing through the LED lamps 20 and 30 when the LED lamps 20 and 30 are driven by the drive control means 51, a comparison unit 62 comparing the current value detected by the current detection unit 61 with a predetermined abnormality determination value, and a determination value switching unit 63 switching the abnormality determination value in accordance with variation of a power supply voltage of the vehicle, and whether or not there is the disconnection or short-circuit abnormality is judged based on the abnormality determination value switched by the determination value switching unit 63 and the detected current value.

LAMP CONTROL DEVICE

A lamp control device comprises a first input terminal, a second input terminal, an output terminal that is configured to be connectable to a lamp via an external switch and outputs a drive current for the lamp, an internal switch provided on a first path connecting the first input terminal and the output terminal, a constant current section provided on a second path connecting the second input terminal and the output terminal, a voltage monitoring section that monitors a voltage applied to the output terminal, and a control section that controls the internal switch on the basis of a monitoring result from the voltage monitoring section. 1. A lamp control device comprising:a first input terminal;a second input terminal;an output terminal configured to be connectable to a lamp via an external switch, a driving current for the lamp being output via the output terminal;an internal switch arranged on a first path connecting together the first input terminal and the output terminal;a constant current circuit arranged on a second path connecting together the second input terminal and the output terminal;a voltage monitor configured to monitor a voltage fed to the output terminal; anda controller configured to control the internal switch based on a result of monitoring by the voltage monitor.2. The lamp control device according to claim 1 , wherein the controller is configured to start switching alternately between first and second control modes when the voltage fed to the output terminal is lower than a first predetermined value.3. The lamp control device according to claim 2 , wherein the controller is configured to claim 2 , after starting switching alternately between the first and second control modes claim 2 , when the voltage fed to the output terminal becomes higher than a second predetermined value claim 2 , finish switching alternately between the first and second control modes and fix the control mode to the first control mode.4. The lamp control device ...

METHOD FOR DYNAMICALLY MONITORING A TRAILER LIGHTING SYSTEM FROM A TRACTION VEHICLE

A method for monitoring, from a traction vehicle, a lighting system of a trailer with first lights having at least one brake light, at least one right tail light, at least one left tail light, at least one rear fog light and/or at least one reversing light, wherein the first lights are supplied with electricity from the traction vehicle via electric circuits, and wherein during the monitoring of the lighting system of the trailer, each of the first lights is periodically checked with a first waiting time, the check determining whether the electric circuit having the first light to be checked is closed or not, wherein the first waiting time between two checks of one of the first lights is extended incrementally starting from an initial value for each individual first light if the electric circuit through this first light is not interrupted. 1. A method for monitoring a lighting of a trailer with first lights from a towing vehicle , the first lights including at least one brake light , at least one right tail light , at least one left tail light , at least one rear fog light , and/or at least one backup light , the method comprising:supplying first lights with power via circuits from the towing vehicle;during the monitoring of the lighting of the trailer, each of the first lights is periodically checked with a first waiting time, for which purpose it is checked whether the circuit with the first light to be tested is closed or not; andextending gradually the first waiting time between two checks of one of the first lights for each individual first light starting from an initial value, if the circuit with this first light does not have a circuit interruption.2. The method according to claim 1 , wherein the gradual extension occurs up to a maximum duration of the first waiting time.3. The method according to claim 1 , wherein the first waiting time between two checks of one of the first lights is reset to the initial value if claim 1 , instead of a closed circuit with ...

Control apparatus for light emitting diodes

A control apparatus for light emitting diodes (LEDs) includes a voltage conversion unit connected to an LED unit to convert an input voltage to supply the LED unit. A voltage difference detecting unit is connected to the LED unit for detecting an output voltage of the LED unit, and the voltage difference detecting unit includes a first resistor, a second resistor and a transistor. A control unit is connected to the voltage difference detecting unit and a hysteresis driving unit, and the control unit cooperates with the voltage difference detecting unit to provide a predetermined voltage. When the output voltage is less than the predetermined voltage, the control unit notifies the hysteresis driving unit to control the switching unit to be short-circuited, so that the voltage conversion unit stops converting the input voltage to cause the LEDs to be completely extinguished.

Electrical circuit for accessory

An electrical circuit for illumination of an accessory that is configured to be coupled to a tow hook of a vehicle is disclosed. The electrical circuit comprises a plurality of circuit blocks for different lights of the accessory, at least one of the circuit blocks comprises one or more LEDs in one or more luminous branches, a resistive load in a branch parallel to the luminous branches, and the resistive load being connected to the circuit block through a resistive load switch. The control system is configured to selectively close the resistive load switch in response to a measurement of electrical current in a first branch connecting the electrical socket with the luminous branches.

HIGH INTENSITY REPLACEABLE LIGHT EMITTING DIODE MODULE AND ARRAY

A light fixture, comprising a matrix, a plurality of electrical sockets fixedly secured to the matrix and forming a rigid matrix of electrical sockets electrically interconnected in two dimensions. One or more light emitting diode modules are individually removable and replaceable within any individual electrical socket within the matrix. Each individual light emitting diode module includes a base and a light emitting diode, wherein the base is configured and arranged for fitted electrical engagement within the electrical socket.

METHOD FOR CONTROLLING A CURRENT OF A LIGHT-EMITTING DIODE

The invention relates to a method for controlling a current to a light-emitting diode in order for it to emit a desired light flux, wherein the current is determined depending on a time period during which the light-emitting diode is supplied with current, in order to generate the desired light flux for said light-emitting diode. 1. A method for controlling a current of a light-emitting diode to emit a desired luminous flux , wherein the current is defined in dependence on a time during which the light-emitting diode was energized , wherein the light-emitting diode is energized using the defined current to generate the desired luminous flux , wherein the current is defined in dependence on an operating parameter of the light-emitting diode which existed during the energizing of the light-emitting diode , wherein the operating parameter represents a frequency of the current and/or a duty cycle of a pulse-width-modulated current signal , using which the light-emitting diode was activated , wherein the pulse-width-modulated current signal is used as the current for activating the light-emitting diode.2. The method as claimed in claim 1 , wherein the operating parameter represents a temperature of the light-emitting diode during the energizing claim 1 , in particular a temperature of an active zone of the light-emitting diode.3. The method as claimed in claim 1 , wherein a value for the current is ascertained in dependence on the time of the energizing and in dependence on the operating parameter during the energizing with the aid of at least one formula and/or with the aid of at least one table and/or characteristic curve and/or with the aid of at least one theoretical model.4. The method as claimed in claim 1 , wherein the operating parameter represents an amperage or a voltage of the current.5. The method as claimed in claim 1 , wherein the operating parameter represents an ambient humidity at the light-emitting diode.6. The method as claimed in claim 1 , wherein the ...

Sensor board for luminaire/lighting system

According to some embodiments, a sensor board may be used with a luminaire. The sensor board may include an environment sensor disposed on a first side of the sensor board to function in a first direction and a color sensor disposed on a second side of the sensor board to function in a second direction. The environment sensor may include an adjustable lens assembly. The environment sensor and the color sensor may be oriented 180° apart from each on the sensor board and the first direction may be oriented 180° apart from the second direction.

SOLID STATE TRANSDUCERS WITH STATE DETECTION, AND ASSOCIATED SYSTEMS AND METHODS

Solid state transducers with state detection, and associated systems and methods are disclosed. A solid state transducer system may include a support substrate that carries a solid state emitter and a state device. The solid state emitter and the state device may be stacked along a common axis. Further, the state device may be positioned to detect a state of the solid state emitter and/or an electrical path of which the solid state emitter forms a part. The solid state emitter may include a first semiconductor component, a second semiconductor component, and an active region between the first and second semiconductor components. The state device may include a state-sensing component having a composition different than that of the active region and the first and second semiconductor components. In some embodiments, the state-sensing component may include an electrostatic discharge protection device, a thermal sensor, a photosensor, or a combination thereof. 132.-. (canceled)33. A solid state transducer system , comprising:a support substrate;a solid state emitter carried by the support substrate, the solid state emitter including a first side facing away from the support substrate and a second side facing toward the support substrate, wherein the first side has a first region and a second region;a state device at the first region, the state device including a portion of an epitaxial growth substrate aligned with the first region, wherein the solid state emitter has been epitaxially formed on the epitaxial growth substrate; anda contact of the solid state emitter at the second region.34. The solid state transducer system of claim 33 , wherein another portion of the epitaxial growth substrate aligned with the second region has been removed prior to forming the contact.35. The solid state transducer system of claim 33 , wherein the state device is connected to the first region through a buffer material.36. The solid state transducer system of claim 35 , wherein the ...

Abnormality Detection Apparatus and Notification Apparatus

An abnormality detection apparatus (100) is configured to detect an abnormality of a lighting device (200). The abnormality detection apparatus (100) includes an illuminance sensor (110), a memory (120) and a controller (130). The controller (130) is configured to detect the abnormality of the lighting device (200) based on a criterion stored in the memory (120) and a difference between an illuminance detected by the illuminance sensor (110) during on state of the lighting device (200) and an illuminance detected by the illuminance sensor (110) during off state of the lighting device (200).

Diagnosis apparatus and method for detecting a defect of at least one of a plurality of light emitting diodes

The invention relates to a diagnosis apparatus for detecting a defect of at least one of a plurality of light emitting diodes which are interconnected to form a light emitting diode series connecting a first supply terminal to a second supply terminal. The defect is intended to be detected with little wiring outlay. The invention provides that a resistance element is connected in parallel with each light emitting diode and a measuring device is configured to generate a diagnosis current between the two supply terminals in a luminous pause, during which none of the light emitting diodes emit light, said diagnosis current giving rise, at each resistance element, to a voltage lower than a forward voltage, starting from which the light emitting diode respectively connected in parallel emits light, and to provide a voltage value of a diagnosis voltage dropped between the supply terminals.

Method and device for remote sensing and control of led lights

A control system is disclosed for determining an actual temperature of a light emitting diode. The control system uses conductor that supply power to the light emitting diode to supply a pulse to the light emitting diode. The pulse is determined along with a reaction caused by the pulse and the information gained is used in determination of the light emitting diode die temperature which can then be used in controlling current to the light emitting diode to control the temperature of the light emitting diode.

Led lamp failure detection circuit and method

An LED fault detection circuit is provided for detecting a fault in at least one LED. The circuit may include a test voltage generator for applying at least one test voltage level to the at least one LED, wherein the at least one test voltage level is less than a nominal operating voltage range; a current measuring circuit for measuring at least one current draw by the at least one LED at the at least one test voltage level; and a processing circuit coupled to the test voltage generator for causing the at least one test voltage level to be applied to the at least one LED, the processing circuit coupled to the current measuring circuit for detecting a fault in the at least one LED when the at least one measured current draw has a profile that does not correspond to an expected current draw profile.

TRAILER LIGHTING OUTAGE DETECTION CIRCUIT

A vehicle LED lighting outage detection circuit is disclosed for detecting a fault in the LED light and automatically increasing the power drawn from the light power supply in response to the fault. A complementary detection circuit is also disclosed for detecting the increased power draw and signaling a fault to an operator. The increased power draw can be selected to be in the form of a pulse that settles to a lower power draw state after a time to avoid excessive and wasteful power draw. The system can be mounted in a vehicle and, more particularly, to a semi- tractor truck. 1. A circuit for detecting outage of an LED , comprising:a load element electrically coupled between a power supply and a ground reference;a detection circuit adapted to detect outage of an LED; and induce increased electrical current flowing between the load element and the ground reference;', 'induce increased electrical current flowing between the load element and the power supply; or both,, 'an increase circuit responsive to one or more electrical variances of the detection circuit, the increase circuit adapted towherein the increase circuit is configured to automatically induce said increasing of current flow when said detection circuit detects a failure in the LED.2. The circuit of claim 1 , wherein said LED is illuminated using power from said power supply.3. The circuit of claim 2 , wherein the current used to power said LED and said circuit for detecting outage of an LED flows between said power supply and said ground reference.4. The circuit of claim 1 , wherein said increase circuit comprises said load element.5. The circuit of claim 1 , wherein said increase circuit induces an increased electrical current flow of at least four amps.6. The circuit of claim 1 , wherein said increase circuit induces an increased electrical current flow of less than seven amps. The circuit of wherein said load element is a positive temperature coefficient (PTC) thermistor.8. The circuit of wherein the ...

Driving module and light source system having the driving module

A driving module, being electrically connected to a control module and for driving a light emitting device with at least one light emitting element, is provided. The driving module has a driving circuit, which receives a control signal from the control module and transmits a drive current signal and a test current signal to the at least one light emitting element, so as to drive the least one light emitting element. A value of the drive current signal is expressed as If. A value of the test current signal is expressed as It. A relationship between the value of the drive current signal and the value of the test current signal satisfies the following equation (1), (It/If)=0.1%˜35% . . . (1), the driving circuit generates a feedback signal based on a status of the least one light emitting element. A light source system having the driving module is provided.

TRAILER LIGHTING OUTAGE DETECTION CIRCUIT

A vehicle LED lighting outage detection circuit is disclosed for detecting a fault in the LED light and automatically increasing the power drawn from the light power supply in response to the fault. A complementary detection circuit is also disclosed for detecting the increased power draw and signaling a fault to an operator. The increased power draw can be selected to be in the form of a pulse that settles to a lower power draw state after a time to avoid excessive and wasteful power draw. The system can be mounted in a vehicle and, more particularly, to a semi-tractor truck. 121-. (canceled)22. A system for detecting outage of an LED , comprising:a detection circuit configured to detect outage of an LED, wherein the LED is electrically connected to a power supply and a ground reference, and wherein the LED is powered by current flowing between the power supply and the ground reference; anda triggering circuit configured to automatically increase current flowing between the power supply and the ground reference when an outage of the LED is detected by the detection circuit;wherein the LED and the detection circuit are mounted in a lamp assembly.23. The system of claim 22 , wherein current powering the LED and the detection circuit flows between the power supply and the ground reference.24. The system of claim 22 , wherein the LED is illuminated using power from the power supply.251. The system of claim claim 22 , wherein the detection circuit is configured to monitor a current draw of the LED claim 22 , a voltage across the LED claim 22 , a voltage in series with the LED claim 22 , a voltage in parallel with the LED claim 22 , or any combination thereof.26. The system of claim 22 , wherein the triggering circuit comprises:a load element electrically coupled between the power supply and the ground reference, wherein the triggering circuit is configured to automatically induce the increased current flow through the load element when the detection circuit detects a ...

DIRECT LED LIGHTING SYSTEM AND METHOD

A direct lighting system and method is provided that includes a plurality of light-emitting diodes (LEDs) secured within a light fixture. The lighting system further includes a diffusive transmissive element adapted to transmit light from the LEDs therethrough and provide diffused light to an area requiring illumination. 1. A method of lighting with light emitting diodes (LEDs) oriented to directly radiate light energy onto a surface to be illuminated without bright spots being observable therefrom , the method comprising:providing a light fixture having an illumination opening oppositely disposed from a mounting surface for passing light energy therethrough;removably engaging an LED assembly to the mounting surface within the light fixture, the LED assembly having a plurality of LEDs disposed thereon and oriented to radiate light energy directly through the illumination opening;coupling the LED assembly to a power source;providing a lens having select diffusivity and transmissivity properties such that light energy from the LEDs transmitted therethrough is sufficiently diffused to optically mask the LED light energy source such that bright spots are not observable therefrom;securing the lens across the illumination opening of the light fixture, the lens being disposed between the LED assembly and the surface to be illuminated; andwherein when power is provided to the LEDs, light radiates from the LEDs directly through the lens in a manner diffusing and optically masking the LED light energy.2. The method of claim 1 , wherein the lens has a transmissivity of greater than 50%.3. The method of claim 2 , wherein light transmitted through the lens from a 100 lumen LED disposed two inches from the lens will uniformly illuminate the lens.4. The method of claim 1 , wherein the lens has a thickness of on the order of 0.12 inches.5. The method of and further comprising:wherein the lens comprises a structural element of the light fixture; andsecuring the lens across the ...

Led lighting device with fault detection, and motor vehicle

An LED lighting device having an LED lamp series circuit with a first LED lamp and with a second LED lamp that is coupled to the first LED lamp through a lamp coupling point, an anode, a cathode, driver electronics for connection to the anode and the cathode for operation of the LED lamp series circuit, and a detection device for detecting a failure of the first LED lamp and the second LED lamp. The detection device, together with the first LED lamp and the second LED lamp, forms a first measuring bridge circuit. In addition, the invention relates to a motor vehicle with an LED lighting device according to the invention.

High Intensity Narrow Spectrum Light Indicator Systems

Indicator systems and methods associated with high intensity narrow spectrum light are provided. In one example embodiment, a lighting system can include one or more high intensity narrow spectrum (HINS) light sources configured to emit HINS light. The system can further include an indicator circuit configured to provide at least one indicator associated with one or more parameters of the HINS light and/or operational performance of the HINS light sources.

Method for determining a light-emission capacity of a light emitting diode

Method for determining a light-emission capacity of a light emitting diode, referred to as a LED. The method includes the following steps: reverse biasing the LED so as to cause an accumulation of an electric charge by the LED, said LED being subjected to a light source incident to the LED; causing a discharge of the electric charge accumulated by the LED; obtaining a value representing a time taken for discharging the charge from the LED; determining the light-emission capacity of the LED according to the discharge time obtained.

Underwater LED Light With Replacement Indicator

Disclosed is a method of determining depreciation of a lumen output of an LED. More particularly, disclosed is a method of determining depreciation of a lumen output of an LED comprising monitoring, by a processing device, an operating characteristic of an AC power source operatively coupled to the LED; determining, by the processing device, whether a lumen output the LED depreciated beyond a specified lumen value based on the monitoring; and causing, by the processing device, an indicator to provide notification to a user based on determining the lumen output of the LED depreciated beyond the specified lumen value.

Method for operating an optoelectronic assembly and optoelectronic assembly

A method for operating an optoelectronic assembly which includes at least one component string having at least one section, wherein the section includes at least one light emitting diode element, is provided. According to the method, the component string is supplied with electrical energy, the supply of the component string with electrical energy is interrupted, a total voltage is detected, which is present between an input and an output of the section of the component string, the total voltage is compared with a sum of threshold voltages of all the light emitting diode elements. It is identified that the section has no short circuit if the total voltage is equal or at least approximately equal to the sum of the threshold voltages, and/or it is identified that the section has a short circuit if the total voltage is less than the sum of the threshold voltages.

Power regulation for lighting fixtures

A device can include multiple light loads, where each light load includes at least one light source. The device can also include multiple switches coupled to the light loads. The device can further include a controller coupled to the switches, where the controller actively operates the switches multiple times within each cycle to control delivery of power to the light loads. Active operation of the switches by the controller is performed on a dynamic schedule, where the dynamic schedule is based on multiple environmental conditions, and where the controller bypasses a forward voltage of the light loads when actively operating the switches.

HIGH INTENSITY REPLACEABLE LIGHT EMITTING DIODE MODULE AND ARRAY

A light fixture, comprising a matrix, a plurality of electrical sockets fixedly secured to the matrix and forming a rigid matrix of electrical sockets electrically interconnected in two dimensions. One or more light emitting diode modules are individually removable and replaceable within any individual electrical socket within the matrix. Each individual light emitting diode module includes a base and a light emitting diode, wherein the base is configured and arranged for fitted electrical engagement within the electrical socket. 1. (canceled)2. A large volume lighting fixture comprising a plurality of high intensity light emitting diodes arranged in an array , the lighting fixture comprising:a matrix comprising a plurality of openings for receiving the plurality of high intensity light emitting diodes;a circuit board;a power supply coupled to the circuit board; anda plurality of electrical sockets, each socket fixedly coupled to the matrix and the circuit board through a respective opening of the plurality of openings for receiving a respective diode of the plurality of high intensity light emitting diodes, whereinthe circuit board comprises a plurality of conductors between the plurality of electrical sockets to provide a set of connections of the plurality of electrical sockets, whereina set of the plurality of high intensity light emitting diodes connected to the set of the plurality of electrical sockets, wherein the set of high intensity light emitting diodes provide sufficient light to produce a large volume of light for a large area, andat least one sealing member providing a water tight seal between the plurality of high intensity light emitting diodes and the power supply.3. The large volume lighting fixture of claim 2 , wherein the set of electrical sockets are connected in series to provide a series connection among sockets.4. The large volume lighting fixture of claim 3 , wherein each electrical socket includes a pair of contacts arranged to receive a ...

Light source apparatus and projection-type display apparatus

Provided is a light source apparatus including semiconductor light sources and a current detection resistor connected in series, a power source circuit that allows current to flow thereto, a current detection circuit that detects current flowing to the current detection resistor and outputs a current detection signal, a control circuit that controls the power source circuit such that a voltage of the current detection signal approaches a target value, a bypass circuit connected in parallel to the semiconductor light sources, and including a clamp element having a clamp voltage higher than a maximum voltage during operation of the semiconductor light sources and a bypass resistor connected in series to the clamp element, and allowing current to flow when an open fault occurs in the semiconductor light sources, and detection circuits that respectively detect an open fault in the semiconductor light sources based on an end-to-end voltage of the bypass resistors.

Programmable led driver

A closed-loop LED drive circuit includes at least one LED, a voltage source, and a voltage regulator connected to the voltage source to provide a regulated voltage output. A one-time-programmable voltage source is connected to an output of the voltage regulator and a current controlled drive circuit is connected to the one-time-programmable voltage source for providing a drive current to the at least one LED in response to an output from the one-time-programmable voltage source. An end of line tester monitors the light intensity of the LED device and provides a signal indicative thereof to said one-time-programmable voltage source. The one-time-programmable voltage source stores the light intensity value and uses the light intensity value to control its output voltage to the current control drive circuit.

Semiconductor light source driving apparatus and a projection type display apparatus

A semiconductor light source driving apparatus includes a light source unit including plural light source modules connected in series, each light source module including a series circuit including one or more series-connected light source elements and a switching element connected in parallel with the series circuit, a current detection unit for detecting a current flowing into the light source unit, and a controller. The controller identifies a light source module including a light source element which has disconnection failure based on a signal from the current detection unit, and stores information indicating the identified light source module in the memory unit. The controller turns on the switching element of the light source module including the light source element having disconnection failure based on the information stored in the memory unit to solve the disconnection failure.

Luminance control apparatus and luminance control method

A luminance control device and a luminance control method for controlling luminance of a light emitting member are provided in order to reduce the amount of information to be stored while preventing the user from feeling uncomfortable. The CPU divides by the interpolation division number a value obtained subtracting the reference duty ratio from the reference duty ratio so as to calculate an interpolation variation width, and integrates the interpolation variation width to the reference duty ratio every time the interpolation period elapses, and the variation width in the luminance of the LED is therefore reduced, preventing users to feel uncomfortable, which allows for suppressing the amount of information to be stored.

Led retrofit lighting unit

An LED lighting assembly (1) comprising a cassette (2), a lens, a printed circuit board, PCB, (6) having at least one LED light source mounted thereon, the lighting assembly comprising an LED driver circuit arranged to maintain conduction in the circuit, the PCB using a first amount of power and wherein the LED driver circuit is arranged to simulate use of a second amount of power, the second amount being lower than the first amount. The LED lighting assembly comprises a capacitor arranged to be activated when a voltage across the LED driver circuit is below a first predetermined level. A resistor or resistor/capacitor combination is connectable to a trickle sensor in a passenger service unit (PSU).

Led lamp failure alerting system

A lighting system includes at least one LED and at least one regulator in communication with the at least one LED. The at least one regulator is configured to supply a substantially constant current to the at least one LED while allowing a light output from the at least one LED to degrade over time towards a target minimum light output, and once the light output of the at least one LED is below the target minimum light output, increase current to the at least one LED to maintain the light output at the target minimum light output.

Configurable Switch Array

A light emitting diode system allows for high current end user LED matrix applications while mitigating internal damage to control circuitry that may be caused by excess current flow. In one example, multiple switches operate in parallel across an LED. When an overvoltage condition is detected in a first switch, a logic circuit determines those switches programed to operate in parallel and causes them to conduct current. This reduces the amount of current flowing through any one switch and mitigates harm to the device. The parallel configuration of switches may be driven by a single pulse width modulated current. This allows the drive current to be divided between parallel transistors, limiting the damaging effects that can be caused by high currents flowing through the transistors.

Detection of the partial and/or total failure of a group of light sources on a vehicle

The invention discloses an electric power supply device for a plurality of light sources on a motor vehicle. The device comprises a plurality of means for the control of the electric power supply of at least one of said light sources respectively. The control means each comprise diagnostic means which are configured to deliver a diagnostic signal for said light source. According to the invention, the device is designed to deliver two binary signals for the identification of a partial failure and/or a total failure of light sources.

A lighting system

A lighting system comprising, a light source, a controller arranged to drive the light source, a memory in communication with the controller, the memory being arranged to store at least one parameter giving at least one of a history of at least one variable characteristic of the light source; and/or at least one fixed characteristic of the light source, wherein the controller is arranged to drive the light source according to one of the stored history of the variable characteristic, the value of the fixed characteristic or both.

WHITE LIGHT EMITTING DIODE (LED) AND METHOD OF REPAIRING LIGHT EMITTING DEVICE USING SAME

A white LED and a method of repairing a light emitting device including, the method including colored light emitting diodes (LEDs) configured to emit different colors of light and arranged in pixels on a backplane of the device, the method including: determining whether each pixel is a functional pixel or a defective pixel; and repairing the defective pixels by transferring white LEDs to the backplane in each defective pixel. 1. A method of repairing a light emitting device comprising colored light emitting diodes (LEDs) configured to emit different colors of light and arranged in pixels on a backplane , the method comprising:determining whether each pixel is a functional pixel or a defective pixel; andrepairing the defective pixels by transferring a white LED to the backplane in each defective pixel.2. The method of claim 1 , wherein:the functional pixels each comprise functional red, green, and blue LEDs; a defective colored LED; or', 'a vacancy location where no LED is disposed, such that the defective pixels have fewer LEDs than the functional pixels., 'the defective pixels each comprise at least one of3. The method of claim 2 , wherein:the pixels each comprise an empty site where no red, green, or blue LED is disposed; and aligning an array of white LEDs with the backplane, such that the white LEDs of the array are disposed in the empty sites in each of the pixels; and', 'bonding white LEDs disposed in the empty sites of the defective pixels to the backplane., 'the repairing the defective pixels comprises4. The method of claim 2 , wherein:the determining whether each pixel is a functional pixel or a defective pixel comprises determining a pattern of the vacancy locations of the defective pixels; and forming an array of white LEDs on a transfer substrate, the white LEDs of the array being disposed in an pattern mirroring the determined pattern of vacancy locations; and', 'aligning the array of white LEDs with the backplane, such that the white LEDs of the array ...

Luminaire health monitoring

An LED array having a driver connected to a sensor. The sensor can be either integral with a controller or separate from the driver and in communication with the controller. The sensor is configured to sense one or more of the temperature, forward voltage, LED voltage, and/or total driver power. The controller is preferably configured for wireless connectivity with a local computer, such as by Bluetooth® or configured for an internet connection to allow for remote monitoring of the LED array. The controller can be configured to compare the sensed voltage, temperature, forward voltage, and/or driver power and compare it to a programmed and/or sensed base and notify of a fault. Alternatively, the controller can be connected to a computer via internet and/or wireless signal (such as Bluetooth®) to compare the sensed condition to a normal condition to determine if a fault has occurred.

车辆用光源控制装置以及计算机可读存储介质

本发明提供一种车辆用光源控制装置以及计算机可读存储介质。所述车辆用光源控制装置具备：近光灯以及远光灯，其分别被串联连接；LED驱动电路，其向近光灯以及远光灯供给电力；第一开关，其一端被连接在近光灯与远光灯之间，且另一端被接地。

External assessment device for a lighting system and method of assessing a lighting system

An assessment device for a lighting system, the device comprising: an input terminal which corresponds to an output terminal of a driver; an output terminal which corresponds to an input terminal of a light engine; a voltage regulator configured to provide power to the microcontroller, wherein the microcontroller is configured to sample an LED+ line voltage and an LED− line voltage with respect to a ground; and wherein the device is independent of the driver and the light engine.

Led device circuit and led module

FIELD: electricity. SUBSTANCE: invention is related to the area of lighting engineering. The LED device comprises several parallel branches of one or more in series light-emitting diodes through which in the operating state the respective portion of operating current passes through the LED device and a current source to supply operating current. The circuit is made to identify the biggest partial current and the operating parameter ensured by the current source on the base of this biggest partial current and to regulate it so that non of partial currents exceeds the preset maximum current. EFFECT: more reliable operation of the device. 15 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H05B 33/08 (13) 2 539 878 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011147197/07, 21.04.2010 (24) Дата начала отсчета срока действия патента: 21.04.2010 (72) Автор(ы): ДИНК Мустафа (DE) (73) Патентообладатель(и): ВИШЭЙ ЭЛЕКТРОНИК ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.05.2013 Бюл. № 15 R U 22.04.2009 DE 102009018428.7 (45) Опубликовано: 27.01.2015 Бюл. № 3 2007013321A1,18.10.2007 . ЕР 1079667А2, 28.02.2001. US 2008164828А1, 10.07.2008 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 22.11.2011 (86) Заявка PCT: 2 5 3 9 8 7 8 (56) Список документов, цитированных в отчете о поиске: WO 2007/096868A1,30.08.2007. US 2 5 3 9 8 7 8 R U (87) Публикация заявки PCT: WO 2010/121806 (28.10.2010) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СХЕМА ДЛЯ СВЕТОДИОДНОГО УСТРОЙСТВА И СВЕТОДИОДНЫЙ МОДУЛЬ (57) Реферат: Изобретение относится к области таким образом, чтобы распознавать наибольший светотехники. светодиодное устройство содержит частичный ток, и обеспечиваемый источником несколько параллельно включенных ветвей из тока рабочий параметр на основе этого одного или более ...

Lighting driver having multiple dimming interfaces

公开了照明控制技术以及对应驱动器和镇流器。在一些实施例中，驱动器或镇流器接收多个调光输入，并且具有产生初始调光信号或电平的多个调光接口。初始调光信号被控制器操控，以产生基于所接收到的调光信号的最终输出调光信号或电平，并且相应地对所附接的光源进行调光。控制器所执行的操控可以包括各种操作，诸如比较和计算初始调光信号的乘积。在一些实施例中，技术可以应用于发光二极管（LED）驱动器或镇流器，以用于荧光和其它放电光源，并且可以用在智能电网和峰值电力成形应用中。

Circuit fault detecting apparatus, LED luminaire and light and/or sender unit

本发明公开了一种电路故障检测装置、LED照明设备及光和/或信号发射装置。该故障检测装置包括：电压接入端；包括并联支路的电路选通单元，每个并联支路的两端分别电连接于第一并联节点和第二并联节点，电压接入端分别电连接至并联支路，电路选通单元配置成：在每个并联支路中，仅在电压接入端的电压比第一并联节点的电压高出第一阈值的情况下将从电压接入端至第一并联节点的电路导通，而仅在第二并联节点的电压比电压接入端的电压高出第二阈值的情况下将从第二并联节点至该电压接入端的电路导通；以及故障信号产生单元，其两端分别与第一并联节点和第二并联节点相连。

Method for dynamically monitoring trailer lighting from a tractor

本发明涉及一种用于从牵引车监控包括第一光源的挂车的照明的方法，所述第一光源具有至少一个刹车灯，至少一个右边的尾灯，至少一个左边的尾灯，至少一个后雾灯和/或‑至少一个倒车灯，其中，第一光源通过电流回路从牵引车提供以电流，并且在监控挂车的照明时，以第一等候时间周期性地检查所述第一光源中的每个第一光源，为此检查，包括要检查的第一光源的电流回路是闭合还是未闭合，其中，如果通过这些第一光源的电流回路没有电流回路中断，则在所述第一光源中的一个第一光源的两个检查之间的第一等候时间对于每个单独的第一光源从原始值出发逐步延长。

Modified high-efficiency light-emitting diode (LED) drive circuit and drive method

本发明公开了一种改进的高效率LED驱动电路和驱动方法，利用保护控制电路对LED负载在开路或短路的情况下进行保护操作，当LED负载开路时，若检测到输出端电压大于过压保护电压时，则关断功率开关管一段时间以进行过压保护；当LED负载短路时，直到检测到电感电流下降至零时，才导通功率开关管，以延长功率开关管的关断时间，以使电感电流能完全降下来再启动下一个开关周期，防止电感电流过高，实现了过流保护。

Sensor board for luminaire/lighting system

According to some embodiments, a sensor board may be used with a luminaire. The sensor board may include an environment sensor disposed on a first side of the sensor board to function in a first direction and a color sensor disposed on a second side of the sensor board to function in a second direction. The environment sensor may include an adjustable lens assembly. The environment sensor and the color sensor may be oriented 180° apart from each on the sensor board and the first direction may be oriented 180° apart from the second direction.

Lighting device

The current invention is an intelligent lighting device capable of being connected to a network and being controlled by a host computer also connected to the network.

lighting apparatus using light emitting diode

본 고안의 엘이디 조명장치는 전류가 흐르면 점등되어 빛을 발생하는 다수의 엘이디들(LED1∼LED4)과 다수의 엘이디들(LED1∼LED4) 각각에 직렬로 연결된 다수의 저항들(RE1∼RE4)로 구성된 발광부(40)와, 엘이디(LED1∼LED4)에 전원을 공급하기 위한 직류 또는 교류전압이 인가되는 전원공급부(10)와, 전원공급부(10)로 공급되는 직류 또는 교류전압을 수신하여 수신된 전압을 직류전압으로 변환시켜 제1직류전압(Vdc1)을 출력하는 정류부(20)와, 입력단(IN), 출력단(OUT) 및 전압조정단(ADJ)을 가지며, 입력단(IN)에는 제1직류전압(Vdc1)이 연결되어 전압조정단(ADJ)에 입력되는 전압을 제어하여 출력단(OUT)으로 일정한 전압을 갖는 정전압(VO)을 출력하는 정전압발생부(30)와, 한 단자가 정전압발생부(30)의 출력단(OUT)에 연결되고, 다른 단자가 발광부(40)의 다수의 저항들(RE1∼RE4)에 공통으로 연결된 제1저항(R1)과, 한 단자가 제1저항(R1)의 다른 단자에 연결되고, 다른 단자가 정전압발생부(30)의 전압조정단(ADJ)에 연결된 제2저항(R2) 및 한 단자가 정전압발생부(30)의 전압조정단(ADJ)에 연결되고, 다른 단자가 접지전압(Vss)에 연결되어 저항값을 조정하여 정전압발생부(30)의 출력단(OUT)으로 사용자가 원하는 일정한 전압을 출력시키는 가변저항(VR)으로 구성된다. The LED lighting device of the present invention is composed of a plurality of LEDs (LED1 to LED4) and a plurality of resistors (RE1 to RE4) connected in series to each of the plurality of LEDs (LED1 to LED4) which are turned on when current flows to generate light. Receives and receives the configured light emitting unit 40, a power supply unit 10 to which a direct current or alternating voltage for supplying power to the LEDs (LED1 to LED4) is applied, and a direct current or alternating voltage supplied to the power supply unit (10). And a rectifier 20 for outputting the first DC voltage Vdc1 by converting the converted voltage into a DC voltage, an input terminal IN, an output terminal OUT, and a voltage adjusting terminal ADJ. A constant voltage generator 30 for outputting a constant voltage VO having a constant voltage to the output terminal OUT by controlling the voltage input to the voltage adjusting terminal ADJ by connecting the DC voltage Vdc1, and one terminal having a constant voltage A plurality of resistors RE1 to RE4 of the light emitting unit 40 are connected to an output terminal OUT of the unit 30, and another terminal is connected to the output terminal OUT of the unit 30. A first resistor R1 commonly connected to the first resistor R1, one terminal connected to ...

Optical signaling apparatus with precise beam control

A light emitting diode (LED) signaling apparatus for navigational aids is provided. The signaling apparatus comprises a plurality of high intensity LEDs with their output beams individually controlled by high precision optical beam transformers. The transformed LED beams are mixed in a predetermined manner by controlling the relative position, angular orientation, and other parameters of the LEDs to produce a desired illumination pattern.

LED lamp with a fault-indicating impedance-changing circuit

In a light-emitting-diode lamp, there is provided an input impedance-changing circuit for establishing a low input impedance circuit when the light-emitting-diode lamp is missingline turned off. This input impedance-changing circuiting comprises Shunt circuit section, and a detector circuit section. The shunt circuit section includes a low impedance element and a controllable switching device connected in series. The detector circuit section detects turning off of the light-emitting-diode lamp and, in response to such detection, close the switching device to thereby cause electric current to flow through the shunt circuit section in order to simulate lower input impedance of the light-emitting-diode lamp. When the light-emitting-diode lamp replaces a conventional traffic signal incandescent lamp, the input impedance-changing circuitry prevents the conflict monitor of the already installed traffic-light lamp system to detect a high lamp impedance and accordingly a faulty lamp.

Optical signaling apparatus with precise beam control

A light emitting diode (LED) signaling apparatus for navigational aids is provided. The signaling apparatus comprises a plurality of high intensity LEDs with their output beams individually controlled by high precision optical beam transformers. The transformed LED beams are mixed in a predetermined manner by controlling the relative position, angular orientation, and other parameters of the LEDs to produce a desired illumination pattern.

LED lamp failure alerting system

Disclosed herein are embodiments of failure alerting systems for LED lamps and LED lamps having the same. An illustrative failure alerting system comprises a photodetector configured to detect an actual light output from the at least one LED, a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase a current to the at least one LED to maintain the target light output, and a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal. A thermal sensor can also be included and configured to sense an operating temperature of the LED and to control the regulator to increase the current and the target light output to ensure the operating temperature does not exceed the target temperature.

Flexible electrical connection of an led-based illumination device to a light fixture

An electrical interface module (EIM) (120) is provided between an LED illumination device (100) and a light fixture (130). The EIM (120) includes an arrangement of contacts (170) that are adapted to be coupled to an LED illumination device (100) and a second arrangement of contacts (121, 152) that are adapted to be coupled to the light fixture (130) and may include a power converter (30). Additionally, an LED selection module (40) may be included to selectively turn on or off LEDs (102). A communication port may be included to transmit information associated with the LED illumination device (100), such as identification, indication of lifetime, flux, etc. The lifetime of the LED illumination device (100) may be measured and communicated, e.g., by an RF signal, IR signal, wired signal or by controlling the light output of the LED illumination device (100). An optic (140) that is replaceably mounted to the LED illumination device (100) may include, e.g., a flux sensor (32) that is connected to the electrical interface.

Light emitting device (led) light fixture control systems and related methods

Fault detection circuit of all-optical display device and display state detection method using same

1. 청구범위에 기재된 발명이 속한 기술분야 전광 표시 장치의 고장 검출 회로 및 표시 상태 점검 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은, 전광판 표시 장치의 표시부에 대해 픽셀 구동부와 병렬로 연결되어 표시부의 소등 상태에서도 고장검출이 가능한 전광 표시 장치의 고장 검출 회로와, 현재 표출상태를 실시간으로 검사하여 정보출력이 원하는 상태로 출력되는지 여부를 확인할 수 있는 전광 표시 장치의 표시 상태 검출 방법을 제공함. 3. 본 발명의 해결 방법의 요지 본 발명의 고장 검출 장치는, 전광 표시 장치에 구비된 표시 소자를 구동시키기 위한 구동 수단; 상기 표시 소자의 출력단과 접지간에 연결되어 전압을 분배하기 위한 분압 수단; 및 상기 분압 수단에 연결되어 상기 표시 소자의 고장여부를 출력하기 위한 검출 수단을 포함한다. 4. 발명의 중요한 용도 본 발명은 전광 표시 장치의 고장 픽셀 위치 및 표시 상태 검출 등에 이용됨.

Method for the lighting device and lighting system of motor vehicle and for running motor vehicle lighting system

一种用于机动车(100)的照明装置(10)包括处理模块(1)，该处理模块构造用于接收、处理并且发送机动车(100)的数据总线(6)的信号。所述照明装置(10)还包括LED单元(3)，该LED单元构造用于在按照运行的状态下发射光，所述光具有能调设的亮度和预定的色坐标，LED单元(3)具有微控制器(4)和多个LED(301、302、303、304)，并且所述微控制器(4)和这些LED(301、302、303、304)被LED单元(3)的壳体(7)包围。所述LED单元(3)还构造成与处理模块(1)双向地通信，从而借助于LED单元(3)和处理模块(1)能求取LED单元(3)的、对于LED单元(3)的功能性具有代表性的当前状态值。

Illumination system of using light emitting diode

본 발명은, 교류전원에 병렬로 접속되며, 적어도 하나의 LED로 이루어진 복수의 LED 그룹으로 그룹핑되며, 그 복수의 LED그룹이 직렬로 배열되고, 각 LED 그룹 사이와 마지막 LED 그룹의 캐소드단자에 각각 탭이 형성되어 있는 LED 어레이와; 기준전압을 생성하는 기준전압원과; 상기 교류 입력 전압의 증가 및 감소에 따라 기준전압을 기준으로 상기 각 LED그룹 별로 피크 전류를 효율적으로 제어하는 스위칭부를 포함하여 구성되어, 넓은 입력전압범위에서 고효율, 고역률 및 저고조파 특성을 갖는 발광다이오드 조명장치를 제공한다.

A method and a device for measuring forward voltage drop of a light emitting element, light source device and thermal printer

本发明公开了一种带有一个发光元件阵列的光学定影设备，该发光元件阵列由许多LEDs连接成矩阵而成。在每列中LEDs彼此串联，并且每个LED列彼此并联。晶体管分别与各个LED列串联，以便打开或关断相应的LED列。一个电容器并联于LED列。在通过打开一个开关给电容器充电之后，LED列中被选择的一列打开，通过这个被选择的LED列使电容器放电。根据在放电结束时通过电容器的电压测量通过该被选择的LED列的正向电压VFL。

Luminous diode driving circuit having short-circuit protection function

本发明公开一种具短路保护的发光二极管驱动电路。所述发光二极管驱动电路包括一升压电路、一第一开关单元、一发光二极管串列以及一控制芯片。所述升压电路接收一输入电压而输出一较高的输出电压。所述第一开关单元连接于所述升压电路与发光二极管串列之间。所述控制芯片连接所述升压电路及所述第一开关单元，并控制所述第一开关单元在发光二极管串列短路时断开，使得输入电源到发光二极管串列的电流回路被切断，以达到短路保护与停止电能消耗的目的。

Control circuit for LED and corresponding operating method

A drive circuit for an LED array, comprising at least two clusters of LEDs, in which one cluster comprises a number of LEDs arranged in series which are connected to a supply voltage (U Batt ), with a semiconductor switch (T) being arranged in series between each LED cluster and the associated supply voltage, which semiconductor switch (T) allows the LED current to be supplied in a pulsed manner, with a measurement resistor (R Shunt ) being arranged in series with the LEDs in the path for the forward current I F between the LEDs and ground. A control loop controls the semiconductor switch (T 1 ) in a first LED cluster, referred to as the master cluster in the following text, such that a constant mean value of the LED current is achieved, wherein the master cluster has a predetermined number X of LEDs in its cluster, and with this control loop also driving at least the semiconductor switch (T 2 ) in a further, LED cluster, referred to in the following text as the slave cluster.

Aerospace light-emitting diode (LED)-based lights life and operation monitor compensator

A system ( 10 ) and method for monitoring the operational life and/or performance of one or more light-emitting diodes (LEDs) ( 20 ) based on sensed parameters are disclosed. The remaining life of each LED may be predicted by counting the clock cycles during which the LED-based light is activated. LED current and/or temperature measurements may be used to control the clock signal and, thus, to compensate the predicted life value. Furthermore, operational characteristics of the LED-based light may be monitored based on LED current and/or voltage measurements. Such characteristics may include performance (e.g., intensity) and failure conditions (e.g., open or short circuits).

Detection of the partial and/or total failure of a group of light sources on a vehicle

An electric power supply device for a plurality of light sources on a motor vehicle. The device includes a plurality of control units configured to control electric power supply of at least one respective light source. The control units each include a diagnostic unit configured to deliver a diagnostic signal for the respective light source. According to the invention, the device is designed to deliver two binary signals for the identification of a partial failure and for the identification of a total failure of light sources.

Methods and systems for illuminating environments

Provided herein are methods and systems for illuminating environments, including aircraft environments. The methods and systems include facilities for providing both white and non-white illumination, with color and color temperature control, in programmed response to inputs. Methods and systems are also provided for improving the addressing of light systems in a network lighting configuration.

Illumination systems

An illumination system (100, 150, 150A) includes a master power supply (102, 250, 300) providing power to several illumination modules (120, 120A... 120N, 160, 160A, ... 160N, 230, 230A, 230B, and 230C). The master power supply is constructed and arranged to generate high-frequency and low-voltage electrical power provided to a primary wire forming a current loop (114). Each illumination module includes an electromagnetic coupling element (232) and several light sources. The electromagnetic coupling element includes a magnetic core (164) arranged to receive the current loop in a removable arrangement, and a secondary wire (161) wound around the magnetic core to enable inductive coupling. The secondary wire is connected to provide current to the light sources arranged as a DC load or an AC load.

Led light emitting device

본 발명은 LED 발광 장치에 관한 것이다. LED 발광 장치는 복수의 LED를 포함하는LED 채널을 다수개 포함한다. LED 발광 장치는 입력 전압을 변환하여 복수의 LED 채널에 출력 전압을 공급하는 트랜스포머, 제어부 및 LED 구동부를 더 포함한다. 제어부는 복수의 LED 채널에 전류가 공급되지 않는 디밍 오프 상태이거나, 복수의 LED 채널 각각에 인가되는 전압에 대응하는 복수의 채널 전압 중 최대 채널 전압이 과전압인 상태 및 상기 복수의 LED 채널이 개방 된 상태인 결함 상태가 소정의 임계 기간 동안 유지되면, 복수의 LED 채널에 공급 전력을 차단하는 제1 피드백 신호에 따라 상기 트랜스포머를 제어한다. LED 구동부는 디밍 오프 상태에 대한 정보 및 상기 결함 상태에 대한 정보를 생성한다. 그리고 LED 구동부는 트랜스포머의 2차측에 연결되어 있고, 제어부는 트랜스포머의 2차측과 절연된 1차측에 연결되어 있으며, 제1 피드백 신호는 디밍 오프 상태에 대한 정보 및 결함 상태에 대한 정보에 따라 생성된다. LED, 백라이트, 조명 The present invention relates to an LED light emitting device. The LED light emitting device includes a plurality of LED channels including a plurality of LEDs. The LED light emitting device further includes a transformer for converting an input voltage and supplying an output voltage to a plurality of LED channels, a control unit, and an LED driving unit. The control unit may be in a dimming off state in which no current is supplied to the plurality of LED channels or in a state in which the maximum channel voltage among the plurality of channel voltages corresponding to the voltages applied to the plurality of LED channels is an overvoltage, When the defective state is maintained for a predetermined threshold period, controls the transformer according to a first feedback signal that cuts off the power supply to the plurality of LED channels. The LED driver generates information on the dimming off state and information on the defect state. The LED driving unit is connected to the secondary side of the transformer, the control unit is connected to the primary side isolated from the secondary side of the transformer, and the first feedback signal is generated according to information on the dimming off state and information on the defect state . LED, Backlight, Lighting

LED driver circuit and method

An LED driver circuit and method are disclosed where an array of light emitting diodes have a transistor connected to each respective array of light emitting diodes. A PWM controller has an input for receiving a voltage reference and an output connected to selected transistors for driving selected transistors and setting a PWM duty cycle for the selected arrays of light emitting diodes to determine the brightness of selected light emitting diodes. An oscillator is connected to the PWM controller for driving the PWM controller.

Methods and systems for illuminating environments

Provided herein are methods and systems for illuminating environments, including aircraft environments. The methods and systems include facilities for providing both white and non-white illumination, with color and color temperature control, in programmed response to inputs. Methods and systems are also provided for improving the addressing of light systems in a network lighting configuration.

Electrical circuit and a method for measuring the power consumption of an LED lighting device

Embodiments consistent with the present disclosure provide an electrical circuit and a method for measuring the power and power consumption of an LED lighting device in real time. The circuit includes a controlling unit configured to process data; a display unit configured to display data received from the controlling unit and other components; a power supply and driving unit configured to supply power; an LED light source; and a RF unit configured to send data to remote terminals. The electrical circuit further includes an input power sampling unit, an output voltage sampling unit, and an output current sampling unit, which are configured to capture the real time input voltage, output voltage, and output current data respectively. Further, the controlling unit may determine the power and power consumption of the LED lighting device by using the received real time voltage and current data measurements, and referring to the stored input voltage-efficiency curves.

Lighting control system having temperature compensation and trim circuits

A lighting control system suitable for a surgical lighting device. The lighting control system includes circuitry that compensates for the effects of temperature changes in a lighting device, and that compensates for forward voltage variations among LED lighting modules to provide substantially uniform light output.

Methods and systems for illuminating environments

Provided herein are methods and systems for illuminating environments, including aircraft environments. The methods and systems include facilities for providing both white and non-white illumination, with color and color temperature control, in programmed response to inputs. Methods and systems are also provided for improving the addressing of light systems in a network lighting configuration.

Led driver, lighting system and driving method with prolonged lifetime of luminous output

对于直到阈值电压的第一范围的感测电压，LED驱动器实施第一恒定-电流驱动方案。此后，实施具有比第一驱动方案的恒定电流更低的电流的第二驱动方案。

Method and system for lighting an environment

Lighting control circuit for vehicular lamp

LED module with passive LED

LED-Modul (1) bestehend aus mehreren auf einer Leiterplatte (75) angeordneten LED (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89), welche jeweils eine sogenannte Einbettung mit einer Linse (100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113) aufweisen, mit welchen die jeweilige LED (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89) aus der Leiterplattenebene vorsteht, wobei die LED (76 bis 89) jeweils mit einem Lichteinkopplungselement (30, 31, 32, 33) eines Lichtleitköpers (2) gekoppelt sind und durch das jeweils zugehörige Lichteinkopplungselement (30, 31, 32, 33) der jeweilige Lichtstrom der zugehörigen LED (76 bis 89) aus dem LED-Modul (1) nach außen abgestrahlt wird, dadurch gekennzeichnet, dass auf der Leiterplatte (75) zu den LED (76 bis 89) wenigstens eine Passiv-LED (95, 96, 97) vorgesehen ist, welche bei Ausfall einer der LED (76 bis 89) aktivierbar... LED module (1) consisting of a plurality on a printed circuit board (75) arranged LED (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89), each having a embedding with a lens (100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113), with which the respective LED (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89) protrudes from the circuit board plane, the LEDs (76 to 89) each having a Lichteinkopplungselement (30, 31, 32, 33) of a Lichtleitköpers (2 ) are coupled and by the respective associated Lichteinkopplungselement (30, 31, 32, 33) of the respective luminous flux of the associated LED (76 to 89) from the LED module (1) is emitted to the outside, characterized, that on the circuit board (75) to the LED (76 to 89) at least one passive LED (95, 96, 97) is provided, which in case of failure of one of the LED (76 to 89) activatable ...

MATRIX LIGHT SOURCE WITH DIAGNOSTIC CIRCUIT FOR A MOTOR VEHICLE

VOLTAGE-DRIVEN MATRIX LIGHT SOURCE WITH DIAGNOSTIC CIRCUIT FOR A MOTOR VEHICLE

Light and method for operating a light

The invention relates to a light, in particular for testing workpiece surfaces using a fluorescent marking means, which light has at least two lighting means (2, 3) which emit electromagnetic radiation with different wavelength ranges. According to the invention, the light is characterized in that the intensity with which the lighting means (2, 3) irradiates can be adjusted separately for at least one of the lighting means (2, 3). Expediently, the light (1) is configured to increase or reduce the intensity of at least one of the lighting means (2, 3) and at the same time to keep the intensity of at least one other of the lighting means (2, 3) constant, or to reduce it or increase it in the opposite way to the first-mentioned lighting means. In a refinement of the invention, the light (1) is configured to adjust the intensity at such a speed that the human eye can adapt to a change in the intensity during the adjustment without adverse effects on the person's sight.

Measuring device for detecting the aging process in individual light emitting diodes

본 발명은 발광 다이오드의 휘도(brightness)를 식별하고, 그 이후에 보상할 수 있게 하는, 개별 발광 다이오드의 노화 과정을 검출하기 위한 측정 장치에 관한 것이다. 이러한 맥락에서, 휘도 세기의 상대적인 측정이 이뤄진다. 본 발명은 또한 개별 발광 다이오드의 노화 과정을 검출하기 위한 상응하는 설치 방법 및 이 방법을 구현하는 제어 명령을 포함하는 컴퓨터 프로그램 제품에 관한 것이다. The present invention relates to a measuring device for detecting the aging process of an individual light-emitting diode, which makes it possible to identify the brightness of the light-emitting diode and compensate thereafter. In this context, relative measurements of luminance intensity are made. The invention also relates to a computer program product comprising a corresponding installation method for detecting the aging process of individual light-emitting diodes and control instructions for implementing the method.

LED string driver circuit including a charge control diode for a capacitor

本发明涉及一种用于控制至少一个负载(D1，D2，D3)的电路装置(1)。为了提供用于从电流源提取辅助供电以便控制分流开关的手段，本发明的电路装置(1)包括用于连接至电源(30)的输入端子(11)；用于连接至至少一个负载(20，21，22，23)的输出端子(12)；控制电路(10)，包括适于对至少一个负载(20，21，22，23)进行控制的控制设备(13)；和能量存储设备(C)，其适于向控制设备(13)提供功率。进一步提供了可控旁通开关(M4)，其中所述旁通开关(M4)和所述控制电路(10)并联连接并且连接在所述输入端子(11)和所述输出端子(12)之间。电路装置(1)适于对旁通开关(M4)进行操作以控制提供至该控制电路的功率。

Light emitting diode module

一种照明装置，包括基体和多个电插座，所述电插座牢固地固定到基体并形成以二维方式相互电连接的刚性的电插座基体。一个或多个发光二极管模块在基体内的任意单独电插座内可单独移除和更换。每一个单独发光二极管模块都包括基部和发光二极管，其中基部被构造和布置成用于电接合地装配在电插座内。

Method and system for calculating residual service life of LED lamp

本发明属于智能照明设备技术领域，尤其涉及一种LED灯具的剩余使用寿命计算方法及系统。所述方法包括：步骤a：通过服务器构建LED灯具在不同功率下的光强数据模型；步骤b：通过LED灯具的WIFI模块获取所述LED灯具开启状态时稳定温度下的光强数据，并将数据发送至服务器；步骤c：所述服务器采用所述光强数据模型对所述光强数据进行转换，并根据所述转换后的光强数据构建光衰模型，通过所述光衰模型对所述LED灯具的剩余使用寿命进行计算。本发明可以提高LED灯具剩余使用寿命的计算准确度，从而更好的保护消费者家庭的人眼健康。

LED DEVICE CIRCUIT AND LED MODULE

1. Схема для эксплуатации светодиодного устройства (14), причем светодиодное устройство (14) содержит множество соединенных параллельно ветвей (S1-S4) из одного или более последовательно расположенных светодиодов (16), через которые в рабочем состоянии протекает соответствующий частичный ток рабочего тока, протекающего через светодиодное устройство (14), содержащая источник (12) тока для обеспечения рабочего тока,отличающаяся тем, чтосхема (10) выполнена с возможностью распознавания наибольшего частичного тока и регулирования обеспечиваемого источником тока (12) рабочего параметра на основе этого наибольшего частичного тока таким образом, что никакой из частичных токов не превышает заданный максимальный ток.2. Схема по п.1, отличающаяся тем, чтосхема (10) выполнена с возможностью подавать управляющее напряжение на источник (12) тока, причем рабочий параметр является регулируемым на основе уровня управляющего напряжения.3. Схема по п.1, отличающаяся тем, чтосхема (10) выполнена таким образом, что посредством возрастания частичного тока в одной из ветвей (S1-S4) может быть вызвано возрастание управляющего напряжения, причем только наибольший частичный ток является решающим для уровня управляющего напряжения.4. Схема по п.2, отличающаяся тем, чторабочий параметр является рабочим током или рабочим напряжением.5. Схема по п.2, отличающаяся тем, чтосхема (10) содержит устройство для обеспечения управляющего напряжения, которое содержитмножество первых диодов (D11-D14), катоды которых соединены друг с другом в опорном узле (КР1) управляющего напряжения, имножество вторых диодов (D21-D24), причем в рабочем состоянии соответствующий катод кажд� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H05B 33/08 (13) 2011 147 197 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011147197/07, 21.04.2010 (71) Заявитель(и): ВИШЭЙ ЭЛЕКТРОНИК ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ДИНК Мустафа (DE) 22.04. ...

DALI adjusting control circuit

一种DALI调光控制电路，用于与LED驱动电路电连接，LED驱动电路包括串联LED电源、开关和LED灯，LED电源包括电流反馈电路和电压反馈电路，DALI调光控制电路包括微控制器、电流检测电路、电压检测电路和DALI通信电路，微控制器分别与所述电流检测电路、电压检测电路和DALI通信电路电连接，电流检测电路和电压检测电路分别用于与LED电源的输出端电连接，DALI通信电路用于与DALI外接设备电连接，微控制器用于分别与所述电流反馈电路、电压反馈电路和开关电连接；微控制器用于依据LED电源的输出电流判断是否出现LED失效，以及用于若接收到DALI关机信号，则控制LED电源降低电压输出。

Luminaire and its adjustment method

FIELD: electricity. SUBSTANCE: invention refers to luminaire adjustment. Luminaire includes at least one removable unit, and each unit includes at least one source of light. Each unit includes controller compensating changes in light intensity caused by ageing of at least one light source by adjusting electric power supplied to at least one light source as a preset time function. EFFECT: constant intensity of luminaire throughout its life. 29 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H05B 37/02 (13) 2 523 067 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2011102700/07, 25.06.2009 (24) Дата начала отсчета срока действия патента: 25.06.2009 (72) Автор(ы): ВИЛМИ Тойво (FI) (73) Патентообладатель(и): ВАЛОПАА ОУ (FI) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 10.08.2012 Бюл. № 22 R U 27.06.2008 FI 20085657 (45) Опубликовано: 20.07.2014 Бюл. № 20 С2, 10.03.2007 . JP2006155948 A, 15.06.2006. US2005023536A, 03.02,2005. US5783909 A, 21.07.1998 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.01.2011 2 5 2 3 0 6 7 (56) Список документов, цитированных в отчете о поиске: RU2316844 Cl, 10.02.2008. RU2295204 2 5 2 3 0 6 7 R U FI 2009/050567 (25.06.2009) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2009/156590 (30.12.2009) Адрес для переписки: 119146, Москва, а/я 33, И.В. Журавлевой (54) ОСВЕТИТЕЛЬНЫЙ ПРИБОР И СПОСОБ ЕГО РЕГУЛИРОВАНИЯ (57) Реферат: Изобретение относится к регулированию компенсации изменения интенсивности света, осветительного прибора. Технический результат вызванной старением, по крайней мере, одного - обеспечение постоянной интенсивности источника света посредством регулирования осветительного прибора в процессе его старения. электрической мощности, подаваемой, по крайней Осветительный прибор включающет по крайней мере, к одному источнику света, как заранее мере, один заменяемый модуль, а каждый модуль заданной функции ...

LED backlight drive circuit and fault detection method thereof

本发明涉及一种LED背光驱动电路及其故障检测方法。该电路包括电源单元、LED灯串、升压单元、检测单元和驱动芯片。其中，驱动芯片一方面电连接升压单元的控制端，向其输出门极控制信号，用以调节电源单元经升压单元提供给LED灯串的驱动电压，另一方面电连接在检测单元的输出端与LED灯串的负端之间，形成LED灯串电流路径。当检测单元输出变化的测试电压时，驱动芯片控制流经LED灯串的电流随测试电压变化而变化，同时根据LED灯串负端的电压与设定的阈值电压的比较结果来判断是否断开其与LED灯串的连接。由此根据LED灯串熄灭的情况，能够准确地判断出LED灯串的短路/虚开故障。

Systems and methods for power supply load detection with hot-plug compatibility

Systems and methods for detecting an incorrect load and preventing powering of that load, until a load change is detected, are disclosed. An incorrect load can be removed and a newly attached valid load can be operated without requiring a reset. A power supply or driver system for a lighting system including one or more solid state light sources includes the systems and methods. The power supply or driver system includes a processor and memory arrangement configured to detect whether a load is operable or non-operable while still being responsive to a new load being attached at any time, and to prevent the system from checking the same load more than once. These may be used in conjunction with features like auto-recovery, restart after faults, and load-hot-plug capability, while perhaps simultaneously reducing cyclical flashing of light output.

Self-diagnostic circuitry for emergency lighting fixtures

Electronic self-test and/or self-diagnostic systems particularly useful with emergency lighting fixtures, including exit signage having light emitting diodes as light sources and unit emergency fixtures powered with lead-acid batteries, the systems perform testing and diagnostic functions on the circuitry, power supply, charger and lamping of such fixtures either by manual or automatic initiation. Testing functions are provided through use of a programmable microprocessor, the diagnostic circuitry not only monitoring operation of charger/transfer circuitry but also controlling the charger/transfer circuitry to enable alternate strategies for alleviation of a given failure. In emergency mode of a light emitting diode exit sign, a microprocessor-controlled two-stage inverter is employed not only to power the LED light source, but also to efficiently power the microprocessor. Power to the microprocessor is controlled by the microprocessor itself and can therefore be discontinued after appropriate operation until mains power is restored, thereby effectively reducing power consumption to zero. System operation can be flexibly configured through use of a two-wire serial link between modular elements of the system. Incandescent emergency unit fixtures due to high drain rates and output loads require emergency mode operation through use of lead-acid batteries, thereby requiring voltage controlled charging and relay transfer, the self-test and/or self-diagnostic circuitry of the invention used with emergency unit fixtures thus differing in various respects from the circuitry employed for the LED exit signage fixtures and primarily in the need to measure both charge and discharge currents, the circuitry having a larger dynamic range in addition to a capability of measuring both positive and negative currents.

Lighting device

A lighting device is provided with an energy (or energy efficiency) indicator that communicates the performance of the lighting device. A lumen contribution of the light emitted by a light emitting element of the lighting device the power consumed by the light emitting element is sensed. A relation between the sensed lumen contribution and the sensed power consumption is estimated and an indication of the estimated relation is provided. Such a lighting device allows for visual inspection of the lighting device to check whether cleaning, maintenance, or replacement is needed.

Current circuit for supply and control of light emitting diode system especially in vehicle lighting monitors load current at each outlet and disconnects if necessary

Die Erfindung betrifft eine Schaltungsanordnung (1) zur Stromversorgung und zum Steuern von Leuchtdiodenanordnungen (21, 22, ..., 2n), insbesondere in Fahrzeugleuchten, mit folgenden Merkmalen: Die Schaltungsanordnung (1) weist mehrere Ausgänge (61; 61'; 62; 62'; ...; 6n, 6n') zum Anschließen von Leuchtdiodenanordnungen (21, 22, ..., 2n) auf; die Schaltungsanordnung (1) weist Mittel (31, 32, ..., 3n) zur Stromüberwachung auf; jedem Mittel (31, 32, ..., 3n) zur Stromüberwachung ist genau ein Ausgang (61, 61'; 62, 62'; ...; 6n, 6n') zugeordnet; die Mittel (31, 32, ..., 3n) zur Stromüberwachung überwachen die über die Ausgänge (61, 61'; 62, 62'; ...; 6n, 6n') fließenden Lastströme (I 1 , I 2 , ..., I n ); die Schaltungsanordnung (1) weist ferner Schaltmittel (4) auf; die Schaltmittel (4) schalten bei einer starken Abweichung der Lastströme (I 1 , I 2 , ..., I n ) von einem Sollwert die Lastströme (I 1 , I 2 , ..., I n ) an allen Ausgängen (61, 61'; 62, 62'; ...; 6n, 6n') ab.

Measurement arrangement to detect aging processes in individual light emitting diodes

Una disposición de medición para detectar procesos de envejecimiento en diodos emisores de luz (LED) individuales, que comprende: - una pluralidad de diodos emisores de luz (LED), que comprenden un diodo emisor de luz roja (R), un diodo emisor de luz verde (G) y un diodo emisor de luz azul (B); - una unidad de control (CTRL) dispuesta para regular individualmente la intensidad del brillo de cada uno de los diodos emisores de luz (LED), caracterizada porque - al menos dos fotodiodos (FD) están dispuestos respectivamente para medir la intensidad del brillo de un diodo emisor de luz (LED) de la pluralidad de diodos emisores de luz (LED) que no corresponde al diodo emisor de luz roja (R) proporcionado, lo que hace que el diodo emisor de luz roja (R) no se pueda controlar, la unidad de control (CTRL) se configura para detectar un cambio relativo en la intensidad del brillo de cada diodo emisor de luz (LED) de la pluralidad de diodos emisores de luz (LED) en función de una primera medición y una segunda medición con compensación temporal a la primera medición, en la que, respectivamente, para el diodo emisor de luz verde (G) y el diodo emisor de luz azul (B) se proporciona un fotodiodo por separado (FD). A measurement arrangement for detecting aging processes in individual light emitting diodes (LEDs), comprising: - a plurality of light emitting diodes (LEDs), comprising a red light emitting diode (R), a light emitting diode green light (G) and a blue light emitting diode (B); - a control unit (CTRL) arranged to individually regulate the intensity of the brightness of each of the light emitting diodes (LEDs), characterized in that - at least two photodiodes (FD) are respectively arranged to measure the intensity of the brightness of a light emitting diode (LED) of the plurality of light emitting diodes (LEDs) that do not correspond to the provided red light emitting diode (R), making the red light emitting diode (R) unable to be controlled, the control unit (CTRL) is ...

Circuit for driving light source

A light source driving circuit including a driving module, a plurality of first switches, a detecting unit, and a control unit is provided. The plurality of first switches is respectively coupled to corresponding light sources and these light sources are driven by the driving module. The detecting unit is coupled to the driving module to detect a working parameter of each light source and transmit the working parameter to the control unit. When the detecting unit detects some of these light sources are broken down, the control unit sequentially turns on the first switches to find out the failed light source. Moreover, the first switch coupled to the failed light source is remained on, and the driving signal is regulated according to the number of the failed light source, such that the brightness of the panel does not decrease.

Light signaling device for e.g. helicopter, has cover reflecting light emitted by light units, and comparator comparing light intensity detected by photometric sensor, placed between support and cover, with reference light intensity

The device has multiple light units (5) e.g. light emitting diodes, mounted on a support (2) and surrounded by a translucent cover (4). The cover reflects the light emitted by the units (5) and is disposed near the units (5). A photometric sensor (6) is positioned between the support and the cover. A comparator compares a light intensity detected by the sensor with a reference light intensity. An independent claim is also included for a light signaling device controlling method.

DEVICE FOR SWITCHING AN AUXILIARY LOAD OF A BLOCK OF LEDS.

CIRCUIT, IN PARTICULAR FOR MOTOR VEHICLE SPOTLIGHTS AND MOTOR VEHICLE LAMPS.

Circuit (1) pour projecteurs de véhicules automobiles, qui comprend un agencement de diodes électroluminescentes (3) et au moins une branche de surveillance (13). Le circuit (1) qui comporte un circuit de contrôle (38) pour la détection d'une coupure électrique dans au moins une diode électroluminescente (5), et le circuit de contrôle (38) est relié de telle sorte à la branche de surveillance (13) qui est alimenté avec une tension chutant sur toutes les diodes électroluminescente (5). Circuit (1) for motor vehicle headlamps, which comprises an arrangement of light-emitting diodes (3) and at least one monitoring branch (13). The circuit (1) which comprises a control circuit (38) for the detection of an electrical break in at least one light-emitting diode (5), and the control circuit (38) is connected so as to the monitoring branch (13) which is supplied with a voltage falling on all the light-emitting diodes (5).

LED lamps with integral controller for road traffic control signals

The controller between the light emitting diodes and the traffic signal control unit allows the conventional use of presence or absence of current to monitor lamp operation. A current mirror (18) allows passage of a current proportional to the potential over the terminals of the light emitting diode group forming the lamp during the intervals when they are non-conducting. This ensures continuity of supply to the lamp while the light emitting diodes are non-conducting at the zero crossing of the AC supply. The current can be interrupted by a switch (20) controlled by a circuit monitoring the current in the diodes. If the current falls to a level indicating failure of a known number of the diodes the switch is opened or can be placed under a degraded operation controller (24).

ELECTROLUMINESCENT DIODE DEVICE