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:
Nov. 27, 2007
Filed:
May. 17, 2005
Applicants:
Koji Ichikawa, Kumamoto, JP;
Seiji Sakai, Tokyo, JP;
Toshiyuki Yoneda, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Chiyoda-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a planar light guiding device and a display device, plural light guiding rods are arranged in parallel to one another in a housing having an opening portion serving as a light emission face at the upper surface thereof, and a point light source (LED)is disposed so as to oppose to at least one of both the end facesof each light guiding rod through a space, thereby constituting a light source unit. These light source units are arranged in the metal housing to thereby form the planar light guiding device.