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:
May. 31, 2016
Filed:
Apr. 24, 2014
Seiko Epson Corporation, Tokyo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
In at least one embodiment, a projection display device comprises a device main body, a shutter that opens and closes an opening for ventilation, and an electricity storage section that stores power from an external power source. If an interruption detecting section detects a power supply from the external power source is stopped and a time in which the power supply is stopped is longer than a predetermined time, the interruption detecting section detects that the external power source is interrupted. If the interruption of the external power source is detected, a control section performs a control to reduce a power consumption of the device main body and a control to drive the shutter so that the shutter is closed by the power supplied from the electricity storage section.