Title:
LED LIGHTING SYSTEM
Document Type and Number:
Japanese Patent JP2009206037
Kind Code:
A
Abstract:
To provide an LED lighting system capable of providing human eye-friendly and well-balanced irradiation light.
This LED lighting system 1 includes two or more types of LED units 2, 3 different in color temperature of emitted light. The respective LED units 2, 3 have each an LED light emitting element 24 and a phosphor arranged on its emission surface. The respective LED units 2, 3 adjacent to each other are arranged so that the respective directivity angles thereof partially overlap each other. The two types of LED units 2, 3 preferably have two kinds of emission colors such as white and warm white. The emission quantity of each of the two types of LED units 2 and 3 is controlled by a control device 7.
Inventors:
WAKIIE SHINSUKE
FUJITANI SHIGETOSHI
FUJITANI SHIGETOSHI
Application Number:
JP2008049602A
Publication Date:
September 10, 2009
Filing Date:
February 29, 2008
Export Citation:
Assignee:
IDEC CORP
International Classes:
F21S8/02; F21S2/00; F21S8/04; F21V14/00; H01L33/48; H01L33/50; H01L33/56; F21Y101/00
Domestic Patent References:
| JP2008218485A | 2008-09-18 |
Foreign References:
| WO2007111359A1 | 2007-10-04 |
Attorney, Agent or Firm:
Kenichi Takasaki