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This is a simple and beautiful design. The clock, with nothing but a gap on the clock face, is settled on glass window to get solar energy from the clocks back and drive the clock rotating. In the day time, sunlight goes through the gap and forms the hour hand to display the time, while in the night, the LED in the interlayer illuminates as the hour hand by stored energy in the day.
LIGHT GAP can sense the strength of light in environment automatically. As long as the sun light going to dark the LED light on LIGHT GAP will star lighting Gradually, in order to Ensure the gap always have light.
Chengyuan Wei, Guanyun Wang, Jiang Wu, Ning Zhang