| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lighting system capable of performing lighting control without causing much variation in an illuminance distribution while providing an energy saving effect. SOLUTION: A luminaire 1 is composed of a communicating part 10 to transmit and receive a transmission signal, an illumination load 11, a human body sensor 12 to sense the presence of a human body M in a sensed area set around a part right under the illumination load 11, an illuminance sensor 13 to sense the illuminance of a sensed area set similarity to that of the human body sensor 12, and a control part 14 to perform the lighting control of time illumination load 11 based on the information received through the communicating part 10, the sensed information of the illumination sensor 13 and the sensed information of the human body sensor 12. Multiple luminaires 1 are divided into groups and the lighting control mode (method) of the illumination load 11 of each luminaire 1 in a group is switched over by the sensed number of the human body sensor 12 of each luminaire 1 in the group, that is, the number of persons.</p> |
