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Patent Searching and Data


Title:
LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS USING THE SAME
Document Type and Number:
Japanese Patent JP2013004941
Kind Code:
A
Abstract:

To provide a light emitting device using a solid light-emitting diode (LED) that can enhance brightness of an end portion of a light emitting face and obtain a uniform brightness distribution as the whole light emitting device.

A light emitting device 1 has plural LEDs 2, a substrate 3 on which LEDs 2 are mounted, and wavelength conversion members 4, 4' containing fluorescent material as transparent resin members covering the light emitting faces of the LEDs 2. Light from an LED 2 disposed to be nearer to the end portion of the substrate 3 is distributed to the peripheral edge portion of the substrate 3. According to this construction, the light amount in the peripheral edge portion direction of the substrate 3 increases by the light from the LED 2 disposed to be nearer to the end portion of the substrate 3, so that the brightness of the end portion of the light emitting face can be enhanced, and a uniform brightness distribution can be obtained as the whole light emitting device 1.


Inventors:
YAMAUCHI KENTARO
Application Number:
JP2011138038A
Publication Date:
January 07, 2013
Filing Date:
June 22, 2011
Export Citation:
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Assignee:
PANASONIC CORP
International Classes:
H01L33/50; F21S2/00; F21V9/16; F21V19/00; H01L33/62; F21Y101/02
Attorney, Agent or Firm:
Yasuo Itaya
Katsumi Taguchi
Shinichi Mizuta