Projection-type image display apparatus, filter apparatus, control apparatus, and control method
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.
1. 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.
2. The projection-type image display apparatus according to claim 1 , wherein the first time period between the second time and the third time is longer than a second time period between the first time and the second time.
3. The projection-type image display apparatus according to claim 1 , wherein the first time period between the second time and the third time is longer than an interval with which the impact application section is operable continuously.
4. The projection-type image display apparatus according to claim 1 , wherein at the third time, a speed of the movement of the filter section is higher than a threshold speed.
5. The projection-type image display apparatus according to claim 1 , further comprises an elastic member in the passage section, wherein the elastic member is in contact with the filter section.
6. The projection-type image display apparatus according to claim 1 , wherein
the filter section includes:
a filter configured to collect dust, and
a frame that holds the filter, and
the impact application section is further configured to strike the frame of the filter section.
7. The projection-type image display apparatus according to claim 1 , wherein the impact application section is further configured to strike the filter section based on the image projection section that is inoperable.
8. The projection-type image display apparatus according to claim 1 , wherein
the impact application section is further configured to strike the filter section based on a summed-up operating time of the image projection section, and
the summed-up operating time corresponds to a time duration associated with an operation of the image projection section.
9. The projection-type image display apparatus according to claim 8 , wherein the first time period between the second time and the third time varies based on the summed-up operating time of the image projection section.
10. The projection-type image display apparatus according to claim 1 , wherein the impact application section is further configured to strike the filter section based on a reciprocal motion by a solenoid actuator.
11. A filter apparatus, comprising:
a filter 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 time period between the second time and the third time varies based on a state of the filter section.
12. A control apparatus, comprising:
a control section configured to:
generate, at a first time, a control signal to control an impact application section of a projection-type image display apparatus;
control, based on the control signal, the impact application section to strike a filter section of the projection-type image display apparatus at a second time,
wherein the filter section vibrates 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 time period between the second time and the third time varies based on a state of the filter section.
13. A control method, comprising:
generating, at a first time, a control signal to control an impact application section of a projection-type image display apparatus;
controlling, based on the control signal, the impact application section to strike a filter section of the projection-type image display apparatus at a second time,
wherein the filter section vibrates based on the first strike of the filter section at the second time; and
controlling 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 time period between the second time and the third time varies based on a state of the filter section.