Title:
ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/023797
Kind Code:
A1
Abstract:
[PROBLEMS TO BE SOLVED] An illumination device is provided to suppress light
projecting from a point-like light source to its front to the extent the light
is not glaring when it is directly watched and to irradiate the light to a necessary
area without waste while to diffuse the light from the point-like light source
in a obliquely forward direction, a lateral direction, or the like. [MEANS FOR
SOLVING THE PROBLEMS] An illumination device is comprised of a light reflective
plate (4), a wiring board (2), and a point-like light source (3), wherein a receiving
concave portion (7) is formed by the light reflective plate or the light reflective
plate and the wiring board, the point-like light source is received in the receiving
concave portion, an incident angle of the light projected from the point-like
light source is 0°, its brightness in the case of a distance of 350mm is not
greater than 30,000cd/m², and a part or all of the light projected from the
point-like light source is reflected on an inner surface of a circumferential
wall portion of the receiving concave portion, so that the reflected light is
used for illumination.
Inventors:
OIDE, Ken (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
大出 謙 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
SAWAMOTO, Tsuyoshi (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
澤本 剛成 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
大出 謙 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
SAWAMOTO, Tsuyoshi (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
澤本 剛成 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
Application Number:
JP2007/066463
Publication Date:
February 28, 2008
Filing Date:
August 24, 2007
Export Citation:
Assignee:
THE FURUKAWA ELECTRIC CO., LTD. (2-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 22, 1008322, JP)
古河電気工業株式会社 (〒22 東京都千代田区丸の内２丁目２番３号 Tokyo, 1008322, JP)
OIDE, Ken (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
大出 謙 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
SAWAMOTO, Tsuyoshi (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
古河電気工業株式会社 (〒22 東京都千代田区丸の内２丁目２番３号 Tokyo, 1008322, JP)
OIDE, Ken (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
大出 謙 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
SAWAMOTO, Tsuyoshi (2-3, Marunouchi 2-chome, Chiyoda-k, Tokyo 22, 1008322, JP)
International Classes:
F21S8/04; F21V7/04; F21Y101/02; H01L33/58
Attorney, Agent or Firm:
THE FURUKAWA ELECTRIC CO., LTD. (2-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 22, 1008322, JP)
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