Illumination device i.e. surface-emitting diode for use as decorative element, has front panel covering light radiation opening in housing, where front panel is formed in single- or multi-color or provided with colored pattern

[0001] The available invention refers to a lighting device in accordance with the generic term of the independent requirement 1.

It is well-known and scientifically proven that light and colors the physical and psychological condition of humans and animal to affect to have been able and also influence on healing processes have been able. Details in addition are in numerous publications, e.g. also in E Wolff, “Die Welt of the light”, 1992, publishing house for information media, running castle, Germany, in many details ausgeführt.

Based on these realizations a multiplicity of devices for Lichtund the color therapy was already developed. Usually it concerns thereby differently formed lamps in the broadest sense, which are trained for the purposeful irradiation of usually smaller body parts with therapeutically effective light. In principle different form of irradiators those represent generally than Solarien designated Bräunungsgeräte. These are usually appropriate for the whole-body irradiation. The therapeutic lamps mentioned and the Bräunungsgerate mentioned are intended nor normally neither for the room lighting to it geeignet.

On the basis of this conditions of the technology a lighting device is to be created, both for room lighting purposes and for lichtund colortherapeutic applications applicable ist.

by the invention This the invention underlying task solved by the lighting device according to invention, as it is defined in the independent requirement 1. Preferential execution forms result from the dependent Ansprüchen.

The nature of the invention exists in the following: A lighting device covers a source of light, which is arranged in a housing with a light radiation opening, and the light radiation opening taking off, at least partial translucent windshield. The lighting device is designed as surface emitters, whereby the housing exhibits a relatively flat shape with a depth comparatively smaller in relation to the dimensions of the light radiation opening. The source of light is designed as intensive source of light with a Leuchtstärke of at least 6000 lumens. The windshield is more einoder polychrome trained or with a preferably colored decoration versehen.

Can be integrated by the training as surface emitters the lighting device standing or area which can be lit up at a wall hung up well in one. By the employment of an intensive source of light the lighting device for light-therapeutic applications is suitable. By the colored or with decoration provided windshield also a colortherapeutic application is possible and a eye-careful absorption of the radiated light is caused. Particularly - however not only - on use of a windshield provided with a decoration the lighting device has a decorative spaceformative Funktion.

also with switched off source of light With a preferential execution variant of the lighting device preferably from glass or transparent plastic, in particular acrylic glass is, existing windshield of the light outlet before-hung and preferably toolless solvable to the housing fastened. Favourable way are intended thereby two or several windshields of different color and/or with decoration, which are fastenable at the housing alternatively. Thus different light qualities and/or decoration effects can produced werden.

depending upon desire and an application goal in simple and comfortable way It participates completely particularly favourable, if the windshield fastens with the help of manually solvable means of mounting, in particular by means of a Klettverbindung or a pushbutton connection, to the housing replaceable ist.

Favourable way exhibits the intensive source of light a Leuchtstärke preferentially by at least 9000 lumens, at least 15,000 lumens, and radiates mainly only in the visible spectral region. The source of light favourable-proves enclosure 4-8, preferably to 6, high speed fluorescent lamps with a Leuchtstärke of at least 1500 lumens, preferably at least 2500 lumens, per lamp. The source of light is in such a way laid out that in a distance from approx. 50 cm of the windshield still another luminous intensity of at least 10,000 lux prevails. By the intensive light produced by the source of light a therapeutic effect can also still in a larger distance from the lighting device reached werden.

In accordance with a preferential execution form the housing exhibits an additional light radiation opening, by which light essentially parallel to the windshield one radiates. In this way an indirect lighting effect can obtained werden.

Favourable way is fastened the windshield in the distance to the housing, so that air between housings and windshield flow through and from the source of light produced warmth would drive off can. Additionally or alternatively also a blower can be intended for the production of a cooling air flow in the housing. A further cooling effect can be achieved favourably also by the fact that the housing and/or the windshield from well warm-deriving materials, in particular metal or suitable plastics, in an educated manner sind.

In accordance with a further favourable execution form the lighting device is equipped with an electronic control for the source of light, whereby the control preferably exhibits a timing function and/or an intensity control function. So that the lighting device different desires and application conditions adapt to Iässt. In particular it can with advantage also as light bell used werden.

In the following the lighting device according to invention with reference to the attached design is described more in detail on the basis of remark examples. Show:

Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig.

- a diagonal view of a first remark example of the lighting device according to invention, - a diagonal view of the lighting device of the Fig. 1 with decreasing windshield, - a plan view on a second remark example of the lighting device according to invention, - a example-wise sentence of four different windshields and - a schematic diagram of an electronic controlling of the Beleuchtungsvorrichtung.

according to invention For the following description the following definition is valid: If reference symbols are indicated in a figure for the purpose of graphic clarity, but does not mention in the directly associated description part, then to their explanation in preceding or following description parts one refers. Furthermore is Lagebzw used in the following description. Indications of direction as “laterally”, “above”, “down”, “in front” and “in the back” relative to in the Fig. 1 and 2 represented normal operation position of the lighting device too verstehen.

Into the Fig. 1 and 2 represented remark example of the lighting device according to invention is designed as surface emitters and has altogether essentially the shape of a flat box, whereby the depth t is clearly smaller in relation to width the b and height of h. The lighting device covers a housing 1 to a large extent open at its front and a at least partial translucent windshield 2, which are fastened to the front of the housing 1 and at least the open range of the housing front covered. On the inside, the housing 1 a source of light 3 is next to each other arranged in the form of for example six 4 lamps 3a-3f installed on a base. The open range of the front of the housing 1 forms (main) a radiation opening 5 for the light produced by the source of light 3. Additionally two lateral reflector walls 6 are intended in the housing, which of the source of light turn 3 laterally radiated light back forward. The rear wall 7 of the housing 1 can be likewise trained reflecting in the range between the two reflector walls 6. Behind the two reflector walls 6 are two chambers 8, which an electronic control 20 (Fig. 5) for the source of light 3 and/or their lamps 3a-3f take up. At the top side 9 of the housing 1 a further radiation opening is the source of light 3 is laid out than intensive source of light. It is understood that she exhibits a Leuchtstärke of at least 6000 lumens. Leuchtstärken of at least 9000 lumens are preferential and over it, for example about at least 15,000 lumens. Furthermore the source of light 3 is in such a way trained and limited that in a distance of ca.

cm before the windshield 2 by this through radiated light still a luminous intensity of at least 000 lux exhibits. The source of light 3 preferably is by a number of 4-8, in accordance with Fig. 2 in particular 6, high speed fluorescent lamps 3a-3f realizes, which ever a Leuchtstärke of at least 1500 - 2500 lumens aufweisen.

The source of light 3 radiates preferably essentially only in the visible spectral region of approximately 450 - 700 Nm and contains in particular no potentially dangerous UV-Anteile.

By the employment of the intensive source of light mentioned 3 the lighting arrangement for light-therapeutic applications is suitable. From glass or a transparent plastic, in particular acrylic glass, existing windshield 2 can be so trained with the fact that it absorbs and makes possibly too sharply felt light thus eye-more careful somewhat. The windshield 2 can be more einoder polychrome trained in accordance with a further favourable aspect of the invention, so that also colortherapeutic applications with the lighting device possible sind.

It, if several differently colored windshields are intended, is completely particularly favourable which depending upon desire and intended stimulation effect be used can. The color yellow works e.g. aufmunternd, green works reassuring down, harmonizing, blue works absorbing, sedating and red works up-attractive. In order on simple and comfortable way a change of the windshield would drive through to be able, is preferably by toolless solvable means of mounting 11 at the housing 1 installed the windshield 2. Such means of mounting know e.g. the well-known Klettverbindungen or pushbutton connections sein.

The lighting device according to invention is particularly suitable for the arrangement at a wall one area which can be lit up due to their training as surface emitters. It can be provided naturally also e.g. with a suitable foot or stand and set up freely in the area. By the flat design the lighting device resembles a picture and can cause from there also an appropriate decorative and/or spaceformative effect. This completely particularly applies, if the assigned windshield is particularly a colored painting with transparency colors, provided with a decoration. In this case a decorative effect is given also with switched off source of light. Painting can e.g. be an artistic Sujet or apply also by the user after own taste. Of course also several windshields with different decoration can assigned werden.

The Fig. 4 shows purely for example a sentence of four different windshields 2a-2d. Three of it are laid out differently in-colored, fourth carry a decoration in form of a landscape. All four windshields are in the same places of their (in Fig. 4 visible) back with e.g. Klettbandstücken do not provide, which cooperate with appropriate counterparts at the housing, if the windshield fastens to the housing ist.

How already mentions, the housing at its top side exhibits an additional radiation opening 10. Light is radiated by these upward and such an indirect room lighting effect erzeugt.

The intensive source of light 3 produces relatively much warmth, which must be exhausted in suitable form. In addition one or more blowers can be intended e.g. in the housing 1. In particularly favourable way however the windshield is 2 in a relatively small distance to the housing 1 installed, whereby between the windshield and the housing a gap is, by air to flow and warmth in this way drive off can. A part of the warmth is exhausted thereby also over the windshield. Furthermore the lower surface of the housing 1 can openly trained and e.g.

by a lattice taken off its, in order to support the supply from cooling air to. Furthermore it is of advantage, if the housing consists metal, which likewise supports the heat dissipation to the environment of a well heat conducting material, in particular. By these measures can normally done without a blower werden.

Fig. schematically a second remark example of the lighting device according to invention shows 3. The only difference in relation to the remark example of the Fig. 1 and 2 consists of the fact that the housing 1 is provided with a auskragenden flange la here and the windshield is clearly larger 2 than the housing. The attachment of the windshield 2 takes place here at the flange la.

In one or divided on the two housing chambers 8 the control 20 the source of light 3. already mentioned is in Fig. one is for example schematically represented 5 to realization of this control. The control essentially covers timing function 21 and intensity control function 22 and its own lamp driver of 23 as well as various operating organs 24 and 25. The control 20 can be similarly or possibly also purely electromechanically realized in actually well-known way digitally or. The timing function 21 causes a time-dependent activation of the source of light, e.g. after time of day. For example the lighting device can be used in this way as light bells. The intensity control function 22 permits a modulation of the Lichtintensität.

The two functions can also cooperate, whereby then a time-steered Intensitätsmodulation erfolgt.

For that managing described remark examples of the lighting device according to invention numerous, detail variants lying in being able the specialist are conceivable. In particular e.g. the windshield can also curved trained or with others than Klettverbindungen or pushbutton connections to the housing fastened sein.

Instead of high speed fluorescent lamps also different lamp types can be assigned and the number of lamps can vary, if indicated intensive luminous intensity thereby are obtained. Furthermore also the use of filters is conceivable, in order to fade out e.g. unwanted spectral portions of the light.