The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2012
Filed:
Feb. 22, 2007
Applicants:
Hisayoshi Fujimoto, Kyoto, JP;
Takaya Nagahata, Kyoto, JP;
Inventors:
Hisayoshi Fujimoto, Kyoto, JP;
Takaya Nagahata, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
F21S 4/00 (2006.01); F21V 5/00 (2006.01); G09F 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A linear light source device includes a light guiding member formed of a transparent body and an LED element arranged to face an end of the light guiding member. A plurality of recesses or projections are formed in a circumferential direction on the transparent body. Light from the LED element incident on the recesses or projections is reflected by the recesses or projections and travels toward the side of the light guiding member opposite to the recesses or projections to be emitted to the outside.