Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2020024834
Kind Code:
A
Abstract:
To provide a low-cost lighting device with a wide toning range and a wide range of dimming for a lighting device that uses an LED as a light source.SOLUTION: A lighting device according to the present invention uses a first light emitting element group (10), a second light emitting element group (20), a third light emitting element group (30), and a fourth light emitting element group (40) having different light colors, and turns off the third light emitting element group in a mode in which the first light emitting element group is turned on, and performs the control for turning off the first light emitting element group in a mode in which the third light emitting element group is turned on.SELECTED DRAWING: Figure 31
More Like This:
Inventors:
TAKAGI HIROAKI
MARUYAMA TAKAYUKI
FUWA TAKESHI
KATO RYO
MARUYAMA TAKAYUKI
FUWA TAKESHI
KATO RYO
Application Number:
JP2018148133A
Publication Date:
February 13, 2020
Filing Date:
August 07, 2018
Export Citation:
Assignee:
HITACHI GLOBAL LIFE SOLUTIONS INC
International Classes:
H05B47/00; F21S8/04; F21V3/00; F21V5/00; F21V23/00
Attorney, Agent or Firm:
Yuji Toda