| 摘要 |
PURPOSE: An automatic cleaning device of a window is provided to improve the safety and the convenience by automatically washing the outside of the window in closing the window, and to insulate noise by closing the clearance between the outer window and the inner window with the second washing unit. CONSTITUTION: An automatic window cleaning device is composed of an upper rail(100) installed in the upper part of a window frame(10), a lower rail(200) mounted in the lower part of the window frame, a sprinkling pipe mounted in the lower part of the upper rail to inject water to the outside of the window, a first washing unit cleaning the outside of the window by sliding along the upper rail and the lower rail, a driving unit(500) mounted outside the window frame to slide the first washing unit, and a second washing unit installed in the frame of the outer window for cleaning the inner window.
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