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:
Jan. 20, 2009
Filed:
Nov. 16, 2006
Applicants:
Shinichi Ushijima, Hyogo, JP;
Atsuji Nakagawa, Hyogo, JP;
Toshitaka Fujii, Hyogo, JP;
Inventors:
Assignee:
Phoenix Electric Co Ltd, Toyotomi-Cho Himeji-Shi Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
To prevent scattering of broken pieces of a reflecting mirror even if a high pressure discharge lamp with a reflector bursts. A light source device according to the present invention is a light source devicethat has an arc tubeand a reflectorand a cover glassis externally fitted and fixed to the rear of the reflectorat opposite ends thereof with a gap S therebetween. With such a configuration, even if the arc tube bursts to cause a crack in the reflector, the cover glass prevents scattering of the broken pieces of the reflector.