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:
Dec. 07, 2010
Filed:
Sep. 05, 2007
Qiang LV, Shenzhen, CN;
Xianglin Zhang, Shenzhen, CN;
Toshihiro Saruwatari, Osaka, JP;
Yanshan Huang, Shenzhen, CN;
Tadashi Renbutsu, Hyogo, JP;
Shoji Okazaki, Osaka, JP;
Xiangfei Kong, Shenzhen, CN;
Wentian Tang, Shenzhen, CN;
Qiang Lv, Shenzhen, CN;
Xianglin Zhang, Shenzhen, CN;
Toshihiro Saruwatari, Osaka, JP;
Yanshan Huang, Shenzhen, CN;
Tadashi Renbutsu, Hyogo, JP;
Shoji Okazaki, Osaka, JP;
Xiangfei Kong, Shenzhen, CN;
Wentian Tang, Shenzhen, CN;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Shenzhen Huaqiang Sanyo Technology Design Co., Ltd., Shenzhen, CN;
Abstract
The invention enables efficient cooling of: a light source providing source light; an optical system adapted to split the source light received from the light source into three primary colors R, G, and B; and a power supply unit for supplying electric power to various electric components installed in a casing of a projector apparatus. To do so, a first fan is arranged between the light source and the power supply unit such that its air inspiration face is directed to the power supply unit and its air expiration face is directed to the light source. Further, a second fan, adapted to inspire air from within the projector apparatus, is provided in the central area of the projector apparatus. On the air expiration side of the second fan is a cooling duct for cooling the light source and optical system. In addition, a third fan for cooling a G-LCP unit and an R-LCP unit of the image synthesizing device and a fourth fan for cooling a B-LCP and an R-LCP unit of the image synthesizing device are provided in such a way that the streams of air expired from said third and fourth fans intersect each other. The invention allows operation of a projector apparatus with a fewer fans, yet achieves suppression of exhaust air temperature and noise, and cost reduction as well.