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Title:
LED LIGHT EMITTING DEVICE
Document Type and Number:
Japanese Patent JP2009170362
Kind Code:
A
Abstract:

To provide an LED light emitting device for efficiently and effectively controlling the distribution of light emitted from an LED light emitting element.

The LED light emitting device includes: a body case 1 having an illumination opening 5, and a polygonal reflective face 7 in which each of angle portions 7a forms a continuous rounded face and an inner peripheral face is tapered to be expanded in diameter toward the illumination opening 5; a substrate 3 mounted on the opposite side to the illumination opening 5 of the body case 1; the LED light emitting element 2 mounted on the substrate 3 and arranged corresponding to the rounded nearly center of the reflective face 7; and a light-transmissive filler 10 filled in the body case 1 to cover the substrate including the LED light emitting element 2.


Inventors:
HIGUCHI KAZUNARI
MORIYAMA IWATOMO
HASHIMOTO SUMIO
KUMAGAI MASATOSHI
Application Number:
JP2008009742A
Publication Date:
July 30, 2009
Filing Date:
January 18, 2008
Export Citation:
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Assignee:
TOSHIBA LIGHTING & TECHNOLOGY
International Classes:
F21V19/00; F21V3/04; F21V7/00; F21V29/00; H01L33/00; H01L33/60; F21Y101/02
Attorney, Agent or Firm:
Junichi Izumi



 
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