| 摘要 |
A crystal display device is disclosed wherein a vertically arranged photovoltaic cell, main device housing-encasing an electric motor and transmission-, and a refractory crystal suspended below is rotated so as to provide multi-colored displays upon room walls and other surfaces when exposed to sunlight. A preferred embodiment of the device utilizes a suction cup to retain the device housing in the afore-mentioned vertical alignment against the inside of a selected window.
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