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:
Nov. 21, 2006
Filed:
Aug. 28, 2002
Shoji Kawahara, Okayama, JP;
Takehiro Okada, Osaka, JP;
Makoto Hoshino, Osaka, JP;
Koji Yoshioka, Oita, JP;
Shoji Kawahara, Okayama, JP;
Takehiro Okada, Osaka, JP;
Makoto Hoshino, Osaka, JP;
Koji Yoshioka, Oita, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
With a trend toward a higher intensity projection type liquid crystal display device to further increase brightness of a projection screen, rated input power of a light source lamp increases, which makes essential a fan apparatus for cooling the light source lamp, etc. Such a fan apparatus would require a light-shielding member which causes the number of parts to increase. The present invention provides a fan apparatus provided with a rotor section that can be rotated/driven around a predetermined rotation axis and a propeller section including propeller blades and attached to the rotor section arranged in such a way as to substantially shield light parallel to the rotation axis.