| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting fixture and a lighting system capable of attaining power saving, and at the same time, controlling the illuminance of an irradiated area to a fixed level, by stopping setting a target illuminance under circumstances where the target illuminance cannot be set correctly.SOLUTION: The lighting fixture 1 has a lighting device 2 for supplying lighting power to a lighting source 4. The lighting device 2 is equipped with an illuminance sensor 3 to detect the illuminance of the irradiated area, a lighting circuit 14 so as to supply the lighting power to the lighting source 4, a brightness controller 11 for outputting a dimming signal for controlling a dimming level so as to conform the illuminance detected by the illuminance sensor 3 to the target illuminance stored in a target-illuminance memory 12, an output controller 13 to control the output of the lighting circuit 14, in response to the dimming signal; and a target-illuminance setting unit 15 for determining the target illuminance on the basis of the illuminance detected by the illuminance sensor 3 and the dimming signal and setting it in the target-illuminance memory 12. The target-illuminance setting unit 15 has a function of accepting or stopping the setting of a target level, according to the switching operation of a mode-changeover switch 5. |
