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1. (WO2018051666) PROJECTION-TYPE IMAGE DISPLAY APPARATUS, FILTER DEVICE, CONTROL DEVICE, AND CONTROL METHOD

Pub. No.:    WO/2018/051666    International Application No.:    PCT/JP2017/028195
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Fri Aug 04 01:59:59 CEST 2017
IPC: G03B 21/14
H04N 5/74
Applicants: SONY CORPORATION
ソニー株式会社
Inventors: MIYAZAKI, Akihiro
宮崎 昭洋
Title: PROJECTION-TYPE IMAGE DISPLAY APPARATUS, FILTER DEVICE, CONTROL DEVICE, AND CONTROL METHOD
Abstract:
[Problem] To provide a projection-type image display apparatus that is capable of more efficiently removing dust collected in a filter. [Solution] This projection-type image display apparatus is provided with: an image projection unit that generates and projects an image; a casing in which at least one suction port is formed and which houses the image projection unit; a flow passage through which outside air taken-in from the suction port flows; a filter that is provided to the flow passage; an impact application unit that strikes the filter; and a control unit that controls the impact application unit so as to strike the filter at the timing when the filter, which is vibrating due to being struck by the impact application unit, moves toward the impact application unit.