Title:
LED LUMINAIRE
Document Type and Number:
Japanese Patent JP2015082462
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent color unevenness from occurring on an irradiation surface as much as possible, in an LED luminaire in which a light source part is configured by two types of LEDs having different color temperatures.SOLUTION: The LED luminaire includes a light source part 1 comprising by arranging a plurality of substantially square shaped core bodies 13, which comprise by densely arranging four pieces of LEDs 10...10 by forming a cross-shaped gap 13a between these, in a direction going around an optical axis 12, by having an interval between the core bodies 13 adjacent to each other. The core body 13 is configured by two pieces of first LEDs 10a, 10a and two pieces of second LEDs 10b, 10b in which color temperature is different from that of the first LED 10a. Also, in the core bodies 13, two sides x, x on the opposing positions with each other are arranged in a direction orthogonal to a virtual straight line y passing through a center of the optical axis 12 and the gap 13a.
Inventors:
WATANABE TAKAFUMI
ONO TAKAHITO
ONO TAKAHITO
Application Number:
JP2013220904A
Publication Date:
April 27, 2015
Filing Date:
October 24, 2013
Export Citation:
Assignee:
USHIO ELECTRIC INC
International Classes:
F21S8/02; F21S2/00; H01L33/00
Domestic Patent References:
| JP2012043543A | 2012-03-01 | |||
| JP2013042099A | 2013-02-28 | |||
| JP2013128052A | 2013-06-27 |
Foreign References:
| US20100226139A1 | 2010-09-09 | |||
| US20100226139A1 | 2010-09-09 |
Attorney, Agent or Firm:
Nobuhiko Nakamura
Minoru Kuwahara
Minoru Kuwahara