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:
Oct. 19, 2004
Filed:
Feb. 26, 2003
Applicant:
Inventors:
Jun Arai, Suwan, JP;
Haruyoshi Yamada, Suwan, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 2/116 ; G03B 2/122 ; H04N 5/64 ; H04N 5/74 ;
U.S. Cl.
CPC ...
G03B 2/116 ; G03B 2/122 ; H04N 5/64 ; H04N 5/74 ;
Abstract
A rear projector ( ) has a closed space ( ) including an inside of an upper cabinet ( ) and an electric optical device ( ), where the electric optical device ( ), a sirocco fan ( ) located below the electric optical device ( ), a duct ( ) covering the upper side of the electric optical device ( ) and a heat sink ( ) attached to the upper cabinet ( ) are disposed and an upper cabinet cooling system ( ) that cools the interior of the closed space ( ) in a circulative manner is provided in the closed space ( ), thereby preventing invasion of duct etc. and providing high-quality image.