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:
Apr. 16, 2013
Filed:
Jan. 31, 2011
Kenichiro Okura, Tokyo, JP;
Haruhiko Matoba, Tokyo, JP;
Kenichiro Okura, Tokyo, JP;
Haruhiko Matoba, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A dust-proof enclosure portion which stores therein an emission portion of a projection unit and in which a projection window from which image light is emitted is formed to direct upward, and a cabinet shielding structure which holds a screen on a front side, in which an opening that introduces the image light emitted from the projection window of the projection unit is included, and in which a second reflection mirror that reflects the introduced image light toward the rear surface of the screen is arranged are included, in which a second dust-proof cover is detachably attached to the opening (light introducing and managing opening) of the cabinet shielding structure, the projection window is exposed in a state where the second dust-proof cover is removed, and the cabinet shielding structure is a sealed structure in a state where the second dust-proof cover is attached.