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. 04, 2003
Filed:
Feb. 11, 2002
Mineo Ohishi, Saitama, JP;
Koji Okamoto, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A projection type display apparatus wherein heat generated from a plurality of heat sources in an outer housing is exhausted efficiently and the weight of the outer housing is balanced. A projection lens is disposed centrally in a front wall of the outer housing, and first and second exhaust mechanisms including first and second exhaust fans for exhausting heat generated by a light source section in the outer housing and a setting power supply circuit board and a light source section power supply circuit board that serve as independent power sections are respectively disposed on left and right sides of the optical unit in the outer housing. First and second exhaust ports of the first and second exhaust mechanisms are disposed on left and right sides of the projection lens in the front wall of the outer housing. Baffles are provided for guiding exhaust from the projection lens and exhaust ports such that they do not advance into the projected light flux to prevent a schlieren of the projected light flux.