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:
Mar. 03, 1998
Filed:
Oct. 24, 1996
Takehiro Okada, Ibaraki, JP;
Yaoki Maeda, Minoo, JP;
Shigeru Aruga, Moriguchi, JP;
Tadashi Ohira, Kobe, JP;
Tsuguhide Ioki, Takatsuki, JP;
Shigekazu Yamagishi, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
There is disclosed a liquid-crystal projection apparatus having a lamp device which has such a sealed or closed construction that a sound, produced upon bursting of a light-emitting tube, is suppressed and that the scattering of glass pieces is prevented. In this liquid-crystal projection apparatus, a lamp is sealed by a support member, supporting a concave mirror having two notches and an outer casing and a flat glass panel and an air passage is formed in the support member. The lamp is releasably attached to a lamp fixing member and two open portions are formed in this lamp fixing member and a cooling fan is fixedly connected to one of the two open portions.