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:
Apr. 18, 2006
Filed:
Nov. 24, 2004
Hiromitsu Gishi, Higashiosaka, JP;
Fumihiko Hamada, Kobe, JP;
Shoji Okazaki, Higashiosaka, JP;
Takaharu Adachi, Daito, JP;
Taichi Yoshimura, Higashiosaka, JP;
Naoyuki Uchiyama, Gunma, JP;
Mitsuhiro Masuda, Osaka, JP;
Michihiro Kurokawa, Hirakata, JP;
Hiromitsu Gishi, Higashiosaka, JP;
Fumihiko Hamada, Kobe, JP;
Shoji Okazaki, Higashiosaka, JP;
Takaharu Adachi, Daito, JP;
Taichi Yoshimura, Higashiosaka, JP;
Naoyuki Uchiyama, Gunma, JP;
Mitsuhiro Masuda, Osaka, JP;
Michihiro Kurokawa, Hirakata, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A projector device adapted to project an image-forming beam using a lamp as a light source. The lamp is installed within a rectangular parallelepipedal housing, and an exhaust fan is disposed to the rear of the lamp. The top wall of the housing surrounding the lamp is given an opening pattern asymmetric about the optical axis of the lamp by forming an air inlet opening in a position deviated from the optical axis toward a direction orthogonal to the axis for producing a swirling air current within the housing by operating the exhaust fan. The lamp can be effectively cooled with reduced quantities of air.