| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide such a lighting device as being capable of precisely controlling the lighting patterns of luminaires set up in a room. SOLUTION: A lighting device used for illumination in a room consists of the first and second lighting groups 5a, 5b. The first lighting group 5a has luminaires 1, a human detecting sensor 2 and a controller to control the lighting condition of the luminaires 1 in accordance with a detection signal from the sensor 2. The second lighting group 5b has luminaires 1, a human detecting priority signal 3 and a controller 4 to control the lighting condition of the luminaires 1 in accordance with a detection signal from the priority sensor 3. The priority sensor 3 is set for the priority to be higher than other sensors 2. The controller 4 of the first lighting group 5a controls the lighting condition of the luminaires 1 in accordance with a detection signal from the priority sensor 3.</p> |
