| 摘要 |
PURPOSE:To automate operation of a screening board and improve visual field by rolling the flexible screening board around a rotating shaft and drawing out by a motor driven by a single of a sun sensor or switch operation. CONSTITUTION:When a change-over switch 9 is closed and placed at an automatic position, a signal given from a sun sensor 4 which receives direct sunchine is input in a driver circuit 6, and a timer not shown in the figure rotates a motor 5 to a required direction for a set time and a flexible screening board 3 is drawn out through a belt 7. When direct sunshine is decreased, the screening board is rolled in. Therefore, the operation of the screening board can be automated and visual field can be improved. |
