| 摘要 |
PURPOSE:To simply set the optimum illuminance according to the floor usage or the like of an office for each work position by feeding a signal directing the illuminance-up or down of a lighting apparatus to a main operation panel until the detected illuminance becomes equal to the desired illuminance. CONSTITUTION:Illuminance can be set manually or automatically. For the manual operation, a manual/automatic transfer switch 13 is set to 'manual'. The desired illuminance display 10 and the current measured illuminance display 11 are compared, if the current illuminance is darker than the desired illuminance, an illuminance-up switch 16 is turned on, if it is brighter, an illuminance-down switch 17 is turned on. A signal directing the illuminance-up or down is sent from an illuminance operation unit 7 to a main operation panel 1. A user can simply set the desired illuminance locally by only operating the illuminance-up switch 16 or the illuminance-down switch 17 while observing the displays 10 and 11 of the illuminance operation unit 7. |
