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:
Jun. 08, 2004
Filed:
Sep. 24, 2001
Applicant:
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/118 ; G03B 2/126 ; G03B 2/122 ;
U.S. Cl.
CPC ...
G03B 2/118 ; G03B 2/126 ; G03B 2/122 ;
Abstract
A centrifugal fan ( ) is provided around the light source of the projector and an exhaust duct ( ) is connected to the centrifugal fan with at least one of bent portion ( ) for bending exhaust stream from the centrifugal fan being formed on the exhaust duct. Since the centrifugal fan for exhausting air can be disposed at a position remote from the exhaust hole, the noise generated from the projector can be reduced even when the size of the cooling fan is increased.