US 10,948,810 B2Granted

Projection-type image display apparatus, filter apparatus, control apparatus, and control method

AssigneeSony Corporation

InventorAkihiro Miyazaki

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Abstract

Provided is a projection-type image display apparatus in which dust collected on a filter can be removed more efficiently. The projection-type image display apparatus includes an image projection section configured to generate and project an image, a cabinet section that houses the image projection section in an interior and is provided with at least one or more air inlets, a passage section through which outside air taken in from the air inlet flows, a filter section provided in the passage section, an impact application section that strikes the filter section, and a control section that controls the impact application section so as to strike the filter section at a timing when the filter section vibrating by striking of the impact application section is moving toward the impact application section.

Claims13

Dependent claims

A projection-type image display apparatus, comprising:

an image projection section configured to generate and project an image;
a cabinet section that houses the image projection section in an interior of the cabinet section,
wherein the cabinet section includes at least one air inlet configured to receive outside air;
a passage section through which the outside air flows inside the cabinet section;
a filter section in the passage section;
an impact application section configured to strike the filter section;
and
a control section configured to:
generate, at a first time, a control signal to control the impact application section;
control, based on the control signal, the impact application section to strike the filter section at a second time,
wherein the filter section is configured to vibrate based on the strike of the filter section at the second time;
and
control the impact application section to strike the filter section at a third time, wherein
at the third time, a movement of the filter section is toward the impact application section,
the strike of the filter section at the third time is subsequent to the strike of the filter section at the second time, and
a first time period between the second time and the third time varies based on a state of the filter section.

13 more elements

Dependencies are inferred from the claim text.