Title:
LIGHT EMITTING DEVICE, BULB-TYPE LAMP, AND ILLUMINATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/060049
Kind Code:
A1
Abstract:
Provided is a light emitting device wherein heat generated in an LED can be efficiently dissipated.
A light emitting device of the present invention is provided with a base (140), and LED chips (150) mounted on the base (140). The base (140) is a translucent base composed of ceramic particles. When a base (140) region including an element mounted region (A2) having the LED chips (150) mounted therein is set as a main region, the average particle diameter of each of the ceramic particles in the main region is 10-40 μm. Furthermore, when a base (140) region at the periphery of the base end portion is set as an end portion region (A1), the average particle diameter of each of the ceramic particles in the end portion region (A1) is preferably smaller than the average particle diameter of each of the ceramic particles in the element mounted region (A2).
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Inventors:
TAKEUCHI, Nobuyoshi (())
竹内 延吉 (())
MATSUDA, Tsugihiro (())
松田 次弘 (())
NAGAI, Hideo (())
竹内 延吉 (())
MATSUDA, Tsugihiro (())
松田 次弘 (())
NAGAI, Hideo (())
Application Number:
JP2011/005279
Publication Date:
May 10, 2012
Filing Date:
September 20, 2011
Export Citation:
Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
TAKEUCHI, Nobuyoshi (())
竹内 延吉 (())
MATSUDA, Tsugihiro (())
松田 次弘 (())
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
TAKEUCHI, Nobuyoshi (())
竹内 延吉 (())
MATSUDA, Tsugihiro (())
松田 次弘 (())
International Classes:
F21S2/00; F21S8/04; F21Y101/02
Attorney, Agent or Firm:
NII, Hiromori (6F Tanaka Ito Pia Shin-Osaka Bldg.,3-10, Nishi Nakajima 5-chome,Yodogawa-ku, Osaka-city, Osaka 11, 〒5320011, JP)
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Claims: