CLEANER FOR WINDOW OF OUTER WALL OF HIGH-RISE BUILDING

The present invention relates to a cleaner for a window of an outer wall of a high-rise building. The cleaner comprises: an upper sash arranged horizontally on an upper part of the window; a loading unit including a brush contacting the window to clean the window and a brush driving motor for rotating the brush; a vertical movement unit for enabling the loading unit to reciprocate in the vertical direction of the window; a panel on which the vertical movement unit is placed; a roller driving unit including a pair of rollers that move along the upper sash and a roller shaft that interconnects the pair of rollers, the roller driving unit supporting the panel at the upper sash such that the panel can reciprocate; and a horizontal movement unit for driving the roller driving unit to enable the panel to reciprocate in the horizontal direction of the window.