Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP3373725
Kind Code:
B2
Abstract:
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.
Inventors:
Miwako Iwai
Nobuo Iwata
Junichi Kato
Fumiaki Ito
Nobuo Iwata
Junichi Kato
Fumiaki Ito
Application Number:
JP9281196A
Publication Date:
February 04, 2003
Filing Date:
April 15, 1996
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
F21S2/00; H05B37/02; (IPC1-7): H05B37/02; F21S2/00
Domestic Patent References:
| JP7312293A | ||||
| JP63318093A |
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)