Title:
LED LIGHT SOURCE, DISPLAY DEVICE, LIGHTING SYSTEM AND ADVERTISEMENT SYSTEM
Document Type and Number:
Japanese Patent JP2010257615
Kind Code:
A
Abstract:
To provide an LED light source, a display device, a lighting system, and an advertisement system, capable of attaining adjustment of brightness by a simple structure while suppressing power consumption.
The LED light source includes a color tone light emission unit 10 which emits two or more kinds of lights while variably having predetermined color tones; and a brightness light emission unit 20 for adjusting brightness. The color tone light emission unit 10 includes a read LED 10a, a green LED 10b and a blue LED 10c. The brightness light emission unit 10 includes a white LED. The light quantity of the lights emitted form the unit 10 and the light quantity of the light emitted from the unit 20 can be independently varied.
Inventors:
TAKEDA YOSHIAKI
TAKEDA KAZUAKI
TAKAHASHI KOICHI
TAKEDA KAZUAKI
TAKAHASHI KOICHI
Application Number:
JP2009103488A
Publication Date:
November 11, 2010
Filing Date:
April 21, 2009
Export Citation:
Assignee:
TAKEDA KK
International Classes:
H05B37/02; F21S2/00; F21V23/00; G09F13/00; H01L33/00; F21Y101/02; G09F13/04
Attorney, Agent or Firm:
Akihide Ohno