| 摘要 |
PURPOSE:To enable an operator to understand operation easily so as to improve convenience in usage by providing a handle to indicate ON/OFF of illumination load in addition to a handle to control dimming level. CONSTITUTION:A substrate equipped with an ON/OFF switch SW1, UP switch SW2 and DOWN switch SW3 is fixed being apart from the back face at a specified distance by means of a fixing screw threaded to a boss 44 protruding from the back face of a cover 40. These operation elements SW1, SW2, SW3 are protruding from the upper face of the cover 40 through three insertion holes 46 formed in the cover 40. Furthermore, on the upper face of the cover 40 handles 501-503 are arranged so that the elements SW1, SW2, SW3 can independently be pressed down. |
