| 摘要 |
PURPOSE:To eliminate a vibration in case when a reflector moves downward and to eliminate a disturbance of a projected image by providing a one-way clutch between a shaft for driving the reflector and a driving member. CONSTITUTION:As for a reflector 5, a roller 16 provided on a supporting plate 15 rotates basing on a rotation of a cam 20. An angular moment by the reflector moving downward operates as force for rotating the cam 20 counterclockwise, this force is transferred to a sprocket 27 through a shaft 40, gears 41, 31, a sleeve 32 and a kick spring 35, and in other words, since the angular moment is supported by a motor, the reflector 5 rotates downward smoothly. |
