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. 31, 2006
Filed:
Jul. 15, 2005
Mikio Shiraishi, Yokohama, JP;
Yasuo Ohtsuka, Chigasaki, JP;
Kenji Fuse, Yokosuka, JP;
Toru Numata, Yokohama, JP;
Mikio Shiraishi, Yokohama, JP;
Yasuo Ohtsuka, Chigasaki, JP;
Kenji Fuse, Yokosuka, JP;
Toru Numata, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A display apparatus includes a light source, and a partition wall which divides an inside of the display apparatus into an enclosing space which includes a plurality of optical elements and an outer space with respect to the enclosing space. The optical elements includes a color separator which receives a light from the light source and emits a plurality of separate color beams, at least one reflecting type light valve which forms an image by reflecting the plurality of color beams, and a projection lens which projects the image of an external screen. A first cooling fan is provided which causes an air flow in the outer space. A least one of the optical elements forms a part of the partition wall, and the air flow cools the at least one reflecting type light valve from the outer space.