Title:
LED ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/162323
Kind Code:
A1
Abstract:
An LED illumination device capable of illuminating a distant object with sufficient brightness.
An LED illumination device is provided with LEDs (9) and also with a refection unit (5) having parabolic reflection surfaces (11) which are provided respectively to the LEDs (9) and which have, at the bottoms thereof, start openings (33) through which the LEDs (9) are exposed. The length of the axis of each of the parabolic reflection surfaces (11) from the bottom thereof, at which the LED (9) is provided, to the end opening (35) is set so that a very narrow angle light distribution can be obtained. The diameter of the end openings (35) is set so that a half-beam angle is in the range from 5 to 7 degrees. The parabolic reflection surfaces (11) are provided parallel to each other, and the LEDs (9) and the associated parabolic reflection surfaces (11) are arranged at an interval (P) which causes the light emitted from each of the parabolic reflection surfaces (11) to overlap with each other in an illumination field at a predetermined distance. A reflection coating is formed on divided parabolic reflection surfaces which are each formed by dividing each of the parabolic reflection surfaces (11) along the long axis thereof in such a manner that the divided halves have the same shape, and the parabolic reflection surfaces (11) are formed by joining the divided parabolic reflection surfaces.
Inventors:
KAMIO, Tadahiro (212-10 Akagidai, Konosu Cit, Saitama 01, 〒3650001, JP)
神尾 忠宏 (〒01 埼玉県鴻巣市赤城台２１２－１０ 株式会社アイ・ライティング・システム 埼玉製作所内 Saitama, 〒3650001, JP)
神尾 忠宏 (〒01 埼玉県鴻巣市赤城台２１２－１０ 株式会社アイ・ライティング・システム 埼玉製作所内 Saitama, 〒3650001, JP)
Application Number:
JP2011/064357
Publication Date:
December 29, 2011
Filing Date:
June 23, 2011
Export Citation:
Assignee:
EYE LIGHTING SYSTEMS CORPORATION (1-4-16, Nihonbashi-bakurocho Chuo-k, Tokyo 02, 〒1030002, JP)
株式会社アイ・ライティング・システム (〒02 東京都中央区日本橋馬喰町一丁目４番１６号 Tokyo, 〒1030002, JP)
KAMIO, Tadahiro (212-10 Akagidai, Konosu Cit, Saitama 01, 〒3650001, JP)
株式会社アイ・ライティング・システム (〒02 東京都中央区日本橋馬喰町一丁目４番１６号 Tokyo, 〒1030002, JP)
KAMIO, Tadahiro (212-10 Akagidai, Konosu Cit, Saitama 01, 〒3650001, JP)
International Classes:
F21S2/00; F21V7/06; F21V7/10; F21Y101/02
Attorney, Agent or Firm:
KUSHIBUCHI & ASSOCIATES (Sonic-City Bldg. 18F, 1-7-5 Sakuragi-cho, Omiya-ku, Saitama-sh, Saitama 69, 〒3308669, JP)
Claims: