JP2016143754A - Electronic device and filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device which effectively removes dust from a filter according to predetermined conditions, and to provide a filter device used in the electronic device.SOLUTION: An electronic device includes a housing, a filter device 50, an air suction mechanism, and a control unit 60. The filter device 50 has a filter and a removal mechanism 20, which applies a force to the filter to remove dust adhering to the filter, and is disposed within the housing. The air suction mechanism is provided within the housing and suctions air from the exterior of the housing to the interior of the housing through the filter. The control part 60 is formed so as to drive the removal mechanism 20 on the basis of one of a posture of the housing and an operation state of the air suction mechanism.SELECTED DRAWING: Figure 5

Description

  The present technology relates to a dustproof filter device and an electronic apparatus provided with the filter device.

  The projector device described in Patent Literature 1 includes a filter device that is disposed inside the intake window inside the housing and captures dust from the air. The filter device includes a filter member that adsorbs dust in the air, a frame member to which the filter member is attached, and a vibrator that vibrates the frame member and shakes off the dust adsorbed on the filter member. A cooling fan is provided in the housing, and by driving the cooling fan, clean air is supplied from the outside of the housing via the filter device to the illumination device and the color separation optical device in the housing to cool them. (For example, refer to Patent Document 1).

JP 2011-170270 A

  An electronic device that can effectively remove dust from a filter according to a predetermined condition using the filter device as described above is desired.

  The objective of this technique is to provide the electronic device which can remove dust from a filter effectively according to predetermined conditions, and the filter apparatus used for this.

In order to achieve the above object, an electronic apparatus according to the present technology includes a housing, a filter device, an intake mechanism, and a control unit.
The filter device includes a filter and a removal mechanism that removes dust attached to the filter by applying a force to the filter, and is provided in the housing.
The intake mechanism is provided in the casing and sucks air from outside the casing through the filter into the casing.
The control unit is configured to drive the removal mechanism based on at least one of a posture of the casing and an operation state of the intake mechanism.
Since the control unit drives the removal mechanism based on the attitude of the housing and / or the operating state of the intake mechanism, dust can be effectively removed from the filter in accordance with those conditions.

The electronic apparatus may further include a posture sensor that detects a posture of the housing.
The control unit may be configured to drive the removal mechanism based on a detection result by the attitude sensor.
When the removal mechanism is driven to remove dust from the filter, the dust attached to the filter may adversely affect the electronic device depending on the filter mounting position and the attitude of the housing (the attitude of the filter device). . Therefore, dust can be safely removed by providing the attitude sensor.

The electronic apparatus may further include a light source, and the control unit may be configured to drive the removal mechanism based on an operation state of the intake mechanism and a state of the light source.
Since the control unit monitors not only the operating state of the intake mechanism but also the operating state of the light source, dust can be removed safely.

  The intake mechanism includes a rotary fan, and the control unit drives the removal mechanism when the input power to the light source is equal to or lower than a threshold value and the rotational speed of the rotary fan is equal to or lower than the threshold value. It may be configured to.

  The controller may be configured to drive the removal mechanism when the brightness of the light from the light source is less than or equal to a threshold value and the rotation speed of the rotary fan is less than or equal to the threshold value. .

The removal mechanism may be a solenoid.
By using a solenoid, the main vector of force applied to the filter can be perpendicular to the filter surface. Thereby, the dust adhering to a filter can be removed efficiently. Moreover, the number of parts of the filter device can be reduced, and a filter device having a simple configuration can be realized.

The electronic device may further include a storage area provided in the housing and storing dust removed by driving the removal mechanism.
The detection threshold value corresponding to the reference value for determining whether or not to drive the removal mechanism may be a value designed according to the size of the accommodation area.

As described above, the filter device according to the present technology is a filter device provided in a housing of an electronic device.
The filter device includes a filter and a removal mechanism.
The removal mechanism receives a control signal generated based on at least one of the attitude of the casing and the operating state of the intake mechanism, and removes dust attached to the filter by applying a force to the filter.

As mentioned above, according to this art, dust can be effectively removed from a filter according to predetermined conditions.
Note that the effects described here are not necessarily limited, and may be any of the effects described in the present disclosure.

FIG. 1 is a perspective view showing a projector as an electronic apparatus according to an embodiment of the present technology. FIG. 2 is a cross-sectional view showing a part of the projector including the air inlet of the housing and its periphery. FIG. 3 is an exploded perspective view showing the filter device. 4A to 4C are views for explaining how dust attached to the filter is removed by driving the removal mechanism. FIG. 5 is a block diagram showing an electrical configuration according to an embodiment of the projector. FIG. 6 is a graph showing the air volume ratio by the fan unit of the projector according to the present embodiment and those of the two projectors according to the comparative example. FIG. 7 is a flowchart showing the operation of the projector. 8A and 8B are diagrams for explaining a threshold range for shifting to a state in which the removal mechanism can be driven. FIG. 9 is a flowchart showing an operation according to another embodiment. FIG. 10 is a flowchart showing another operation of the projector having the electrical configuration according to each of the above embodiments. 11A and 11B are cross-sectional views showing the vicinity of a filter device of a projector according to another embodiment.

  Hereinafter, embodiments according to the present technology will be described with reference to the drawings.

  [Basic projector configuration]

  FIG. 1 is a perspective view showing a projector as an electronic apparatus according to an embodiment of the present technology. The projector 100A includes a housing 10 that accommodates some or all of the functional components (plural). An air inlet 15 for taking air into the housing 10 is provided on one side surface (for example, the right side surface) 11 of the housing 10. The intake port 15 is composed of, for example, a plurality of slits.

  FIG. 2 is a cross-sectional view showing a part of projector 100A including air inlet 15 of casing 10 and its periphery. A dust-proof filter device 50 is disposed in the housing 10 so as to be adjacent to the intake port 15, and a fan unit 62 that functions as an intake mechanism is provided in the vicinity of the filter device 50.

  FIG. 3 is an exploded perspective view showing the filter device 50. The filter device 50 mainly includes a filter element 35 (filter), a frame member 30, a buffer member 38, and a removal mechanism 20.

  The filter element 35 has a function of capturing dust in the air. The frame member 30 has a function of supporting the filter element 35 and has, for example, a rectangular shape that is long horizontally. The frame member 30 includes a frame main body 33 and a base projection plate 31 provided along the outer periphery of the frame main body 33 and protruding outward.

  For example, two buffer members 38 are provided. These buffer members 38 are attached to the frame member 30 so as to sandwich the base projection plate 31 from both sides. The buffer member 38 is made of, for example, a sponge, rubber, or other material having a relatively low rigidity.

  As shown in FIG. 2, a filter mounting portion 13 is provided inside the housing 10. The filter mounting portion 13 has a shape corresponding to the shape of the base projection plate 31 of the frame member 30, for example, a rectangular shape formed continuously or intermittently. The frame member 30 is installed in the housing 10 such that the base projection plate 31 is sandwiched by the filter mounting portion 13 via the buffer member 38.

  The removal mechanism 20 is configured by a solenoid, for example. As shown in FIG. 3, a head 24 and a muffler member 26 are attached to the tip of the solenoid drive shaft 22. For example, two silencing members 26 are provided so as to sandwich the head 24 in the axial direction of the drive shaft 22.

  The solenoid is connected to the frame member 30 so that the distance between the head 24 attached to the drive shaft 22 and the frame member 30 (for example, the column portion 32 provided at the center thereof) is shorter than the stroke of the drive shaft 22. Is arranged. That is, the solenoid is disposed at a position where the head 24 can apply a force to the frame member 30. A solenoid is disposed with respect to the frame member 30. Or the solenoid may be provided so that the head 24 may be connected to the frame member 30 (for example, the pillar part 32 provided in the center part).

  The fan unit 62 is a rotating fan device having rotating blades (not shown), for example. The fan unit 62 may be an axial flow type or a centrifugal type. Either type is selected depending on the arrangement, design, etc. of the fan unit 62 and functional parts.

  As shown in FIG. 2, a ventilation path 69 indicated by a one-dot chain line is provided between the fan unit 62 and the fan unit 62 and the frame member 30. The ventilation path 69 is extended to a position where at least one component among functional components (not shown) is arranged. When the fan unit 62 operates, the air outside the housing 10 is introduced into the housing 10 through the air inlet 15 and the filter device 50. The introduced air is supplied to at least one of the functional components through the ventilation path 69. Thereby, the component is cooled.

  For example, an exhaust port (not shown) is provided on the bottom surface of the housing 10. The air used for the cooling is discharged out of the housing 10 through the exhaust port.

  Although not shown, the functional component projects, for example, an illumination optical system including a light source, a light modulation device that modulates illumination light from the illumination optical system to generate image light, and image light generated by the light modulation device A projection optical system. As shown in FIG. 1, a projection lens 70 constituting a part of the projection optical system is provided on the front surface of the housing 10.

  4A to 4C are views for explaining how dust attached to the filter element 35 (see FIG. 3) is removed by driving the removal mechanism 20. As shown in FIG. 4A, when the drive shaft 22 of the solenoid is driven forward, the head 24 strikes the frame member 30 and, as shown in FIG. 4B, the frame member 30 swings due to the impact. As the frame member 30 swings, the dust D adhering to the filter element 35 falls as shown in FIG. 4C. By removing the dust D, it is possible to ensure an air volume at the time of product shipment, that is, an air volume equivalent to an intended air volume.

  In the present embodiment, the use of a solenoid as the removing mechanism 20 allows the main vector of the force applied to the filter to be in the direction of the drive shaft 22, that is, the direction perpendicular to the filter surface. Thereby, the dust adhering to a filter can be removed efficiently. Further, by using the solenoid, the number of parts of the filter device 50 can be reduced, and the filter device 50 having a simple configuration can be realized.

  [Electrical Configuration and Operation of One Form of Electronic Device]

  FIG. 5 is a block diagram illustrating an electrical configuration according to an embodiment of the projector 100A. The projector 100A includes a control unit 60, an attitude sensor 63, a fan unit 62, a functional component 61, a removal mechanism 20 for the filter device 50, and a power switch (not shown). Here, the functional component 61 means a component including an electric circuit and electric wiring, such as a light source and a light modulation device.

  The posture sensor 63 is provided so as to be fixed integrally with the housing 10, and can detect the posture of the housing 10, that is, the posture of the filter device 50. As the attitude sensor 63, for example, an acceleration sensor and / or an angular velocity sensor is used. Specifically, the attitude sensor 63 is configured to detect at least an inclination angle around an axis (y axis in FIG. 1) parallel to the filter surface of the filter element 35. In the present embodiment, the y-axis is an axis along the longitudinal direction of the side surface 11 of the housing 10.

  The control unit 60 is configured to drive the removal mechanism 20 based on the detection result of the attitude of the casing 10 (the inclination angle of the casing 10 around the y axis) by the attitude sensor 63. As one form, the control part 60 performs control which starts the drive of the removal mechanism 20, and control which stops the drive based on the said detection result.

  The hardware configuring the control unit 60 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. Alternatively, the control unit 60 may include a PLD (Programmable Logic Device).

  The power switch is a switch that is electrically connected to, for example, a power supply device (not shown) that is one of functional components, and that turns on and off power to the projector 100A from the outside. The power switch may also include a semiconductor switch (for example, a power OFF switch).

  FIG. 6 is a graph showing the airflow ratio by the fan unit 62 of the projector 100A according to the present embodiment and the airflow ratio by the fan units of the two projectors (comparative examples 1 and 2) according to the comparative example. The horizontal axis is the operating time of the fan unit, and the vertical axis is the air volume ratio. The air volume ratio indicates the rate of decrease in air volume when the desired air volume ratio is 100%. As can be seen from the graph, the air volume ratio of the two projectors according to the comparative example decreases with the passage of time, and reaches, for example, about 80 to 90%, which is the air volume ratio of the maintenance standard in several hundred hours.

  On the other hand, in the projector 100A according to the present embodiment, the dust volume is regularly or irregularly removed by the removal mechanism 20, so that the air volume ratio of about 95% can be maintained for a long time. Therefore, high cooling performance can be maintained for a long time.

  Conventionally, when a high-performance filter having fine eyes is used, there is a concern that clogging will occur early and the air volume will decrease. However, according to the present embodiment, there is no such concern, and a high-performance filter having fine eyes can be used.

  In the present embodiment, the desired air volume can be maintained by using the filter device 50. Therefore, it is possible to reduce the size of the filter element, specifically to reduce the area of the filter surface.

  FIG. 7 is a flowchart showing the operation of the projector 100A. In the following, for convenience of explanation, the operation subject will be described as the control unit 60. For example, when the power switch is turned off by the user, the control unit 60 starts preparation for the shutdown of the projector 100A (step 101), and shifts to the filter cleaning operation state after step 102.

  In the cleaning operation state, the control unit 60 operates as follows. The control unit 60 acquires the detection value output from the attitude sensor 63 and monitors the detection value (step 102). The detection threshold is a value corresponding to a reference value indicating whether or not the control unit 60 drives the removal mechanism 20. When the detected value is equal to or smaller than the threshold value, the control unit 60 starts driving the removal mechanism 20 (step 103), and then stops the driving (step 104). At this time, it takes several seconds for the dust to fall down. This completes the cleaning operation.

  On the other hand, when the detected value exceeds the threshold value in step 102, the control unit 60 does not drive the removal mechanism 20 (step 105) and turns off the power of the projector 100A as it is.

  Here, FIGS. 8A and 8B are diagrams illustrating a threshold range for shifting to a state in which the removal mechanism 20 can be driven. 8A and 8B, the projector 100A is viewed from the projection lens 70 side, that is, the front side, and the filter element 35 is disposed on the right side surface of the housing 10 thereof.

  FIG. 8A shows a state where the casing 10 of the projector 100A rotates clockwise and the inclination angle changes. FIG. 8B shows how the tilt angle changes as the housing 10 rotates counterclockwise. In a normal usage method of the projector 100A, that is, in a state where the projector 100A is placed horizontally as shown in FIG. In this case, the inclination angle of the housing 10 is 0 ° with respect to the horizontal plane.

  For example, the clockwise polarity in FIG. 8A is positive, and the counterclockwise polarity in FIG. 8B is negative. A threshold range (hereinafter referred to as a drive allowable range for convenience) for shifting to the drive state of the removal mechanism 20 is 0 ° to + 180 ° (see FIG. 8A), and 0 ° to −−. 20 ° and −160 ° to −180 ° (see FIG. 8B). That is, when the rotation direction is the clockwise direction, the allowable drive range is all angle ranges, and when the rotation direction is the counterclockwise direction, the angle range is limited as described above.

  As shown in FIG. 8A, when the casing 10 is tilted clockwise, the filter surface faces downward, so any tilt angle within 0 ° to + 180 ° is set as the allowable drive range.

  In FIG. 8B, when the casing 10 is tilted counterclockwise, if the tilt angle of the casing 10 is not within the allowable drive range, even if the dust is separated from the filter element 35 due to the impact of the removal mechanism 20, the dust is gravity. There is a possibility of falling and reattaching to the filter element 35. Therefore, the counterclockwise tilt of the housing 10 is effective from the filter element 35 by driving the removal mechanism 20 when the tilt angle of the housing 10 is within a predetermined range as in the present embodiment. Dust can be removed.

  For example, when the filter device 50 is disposed on the left side surface of the housing 10 when the projector 100A is viewed from the front side, the allowable driving ranges shown in FIGS. 8A and 8B are opposite to each other. That is, when the rotation direction is counterclockwise, all angle ranges are obtained. When the rotation direction is a clockwise direction, the allowable drive range is a limited angle range (0 ° to + 20 ° and −160 ° to + 180 °).

  Further, the limited drive allowable range (see FIG. 8B) is 0 ° to −20 ° and −160 ° to −180 ° as described above (0 ° to + 20 ° when the filter device 50 is on the left side). And + 160 ° to + 180 °). However, it is preferably set to 0 ° to −10 ° and −170 ° to −180 ° (0 ° to + 10 ° and + 170 ° to + 180 ° when the filter device 50 is on the left side surface).

  As described above, according to the projector 100A according to the present embodiment, dust can be effectively removed from the filter element 35 in accordance with a predetermined condition such as the posture of the housing 10.

  [Operation according to another form of projector]

  With reference to FIG. 5, in the present embodiment, in addition to the detection value by attitude sensor 63, control unit 60 includes information indicating the operating state of fan unit 62 and information indicating the state of the light source among functional components 61. Configured to get.

  The operation state of the fan unit 62 is, for example, the number of rotations of the rotary blades. That is, the control unit 60 monitors the rotational speed of the rotary blade. On the other hand, the state of the light source is, for example, power supplied to the light source. That is, the control unit 60 monitors the power input to the light source.

  FIG. 9 is a flowchart showing the operation according to the present embodiment. Steps 201, 202, and 209 are the same processes as steps 101, 102, and 105 in the flowchart shown in FIG.

  In step 202, when the value detected by the attitude sensor 63 is within the allowable drive range, the control unit 60 executes the following process. The controller 60 controls the input power to the light source (step 203), specifically, dimming or turning off. When the input power is equal to or less than the threshold value (Yes in Step 204), the control unit 60 controls the rotational speed of the fan unit 62 (rotary blades) (Step 205). Lower or stop. When the number of rotations is equal to or less than the threshold value (Yes at Step 206), the control unit 60 executes the same processing as the processing at Step 103 and Step 104 shown in FIG. 7 (Steps 207 and 208).

  The control unit 60 monitors the power input to the light source as the state of the light source, but may monitor the brightness of the light from the light source. “Brightness” specifically means luminance, illuminance, luminous flux, or luminous energy. In this case, projector 100A includes a brightness sensor that detects the brightness.

  Note that steps 203 and 204 may be executed after steps 205 and 206.

  In the present embodiment, both the rotational speed of the fan unit 62 and the state of the light source are monitored. Therefore, even if the state of the light source satisfies the condition for shifting to the cleaning operation state, if the rotational speed of the fan unit 62 does not satisfy the condition, dust may not be effectively removed when the removal mechanism 20 is driven. Conversely, even if the rotational speed of the fan unit 62 satisfies the condition for shifting to the cleaning operation state, if the light source does not satisfy the condition, excessive heat generation of optical components such as lenses becomes a problem. According to the present embodiment, these problems can be solved.

  [Operations according to still another embodiment of the projector]

  FIG. 10 is a flowchart showing another operation of the projector 100A having the electrical configuration according to each of the above embodiments.

  In this process, a mode in which the power is turned off by means other than the power switch will be described. For example, a case will be described in which, for example, the indoor breaker is shut off or the power plug is pulled out from the indoor power jack while the projector 100A is activated. Thus, when the power is turned off without using the power switch (step 301), the cleaning operation cannot be executed. Therefore, when the projector 100A is turned on and started up next time (step 302), the processing after steps 102 and 202 shown in FIGS. 7 and 11 is performed (step 303).

  [Configuration of projector according to another embodiment]

  FIG. 11A is a cross-sectional view showing the vicinity of a filter device 50 of a projector 100B according to another embodiment. In the housing 110, a housing portion 17 that houses the dust removed from the filter element 35 is provided between the air inlet 15 of the projector 100 </ b> A and the frame member 30 of the filter device 50. The accommodating part 17 has an opening in the upper part, and an accommodating area 17 a in which dust accumulates is provided in the accommodating part 17. The removal mechanism is not shown.

  The projector 100B according to the present embodiment includes the attitude sensor 63 described above. The threshold value for detection by the posture sensor 63 is designed according to the size of the accommodation area 17a. Specifically, when the casing 110 is tilted, the tilt angle of the casing 110 is allowed to be driven according to the distance d from the outer surface of the filter element 35 to the end portion 17b on the intake port 15 side of the housing region 17a. A range is set. The distance d is a distance such that the end portion 17b of the accommodation region 17a is located on the vertical line drawn from the upper end of the filter element 35 as shown in FIG. 11B. The inclination angle α of the housing 110 in the state shown in FIG. 11B is the maximum inclination angle at which the cleaning operation can be performed.

  For example, as described with reference to FIG. 8A, when the allowable drive range is not set in a wide range of 0 ° to + 180 °, the allowable drive range is a value corresponding to the size of the accommodation region 17a as in the present embodiment. Can be set. And even if it inclines with the maximum inclination angle shown to FIG. 11B, when dust is removed from the filter element 35 by the drive of the removal mechanism 20, it can accommodate most dust in the accommodation area | region 17a.

  [Other various embodiments]

  The present technology is not limited to the embodiments described above, and other various embodiments can be realized.

  In the above embodiment, the control unit monitors the attitude of the casing, but does not monitor the attitude of the casing (an attitude sensor is also unnecessary), and the removal mechanism is based only on the operating state of the intake mechanism that is a fan unit. You may make it drive.

  In the processing shown in FIG. 9, the control unit 60 may execute step 203 and subsequent steps after step 201 and omit step 202. In this case, if the determination at step 204 or step 206 is No, the process at step 209 may be executed.

  The air inlet 15 is not limited to the form provided on the side surface of the housing, and may be provided on at least one of the back surface, the bottom surface, and the top surface of the housing.

  As the removing mechanism 20, other mechanisms such as an eccentric motor and a piezoelectric vibration device may be used instead of the solenoid.

  In the form shown in FIG. 8A, all of the clockwise tilt angles of the housing 10 are within the allowable drive range. However, the drive allowable range may be 0 ° to 20 ° and 160 ° to 180 ° (or 0 ° to 10 ° and 170 ° to 180 °) for both clockwise and counterclockwise directions. That is, the removal mechanism 20 may be operated when the surfaces constituting the filter element 35 are arranged substantially parallel to the direction of gravity action.

  As an example of the electronic apparatus, a projector has been described. However, an apparatus such as a PC (Personal Computer) or other computer may be used.

  It is also possible to combine at least two feature portions among the feature portions of each embodiment described above.

In addition, this technique can also take the following structures.
(1)
A housing,
A filter device having a filter and a removal mechanism for removing dust attached to the filter by applying force to the filter; and a filter device provided in the housing;
An intake mechanism that is provided in the housing and sucks air from outside the housing through the filter into the housing;
An electronic device comprising: a control unit configured to drive the removal mechanism based on at least one of a posture of the housing and an operating state of the intake mechanism.
(2)
The electronic device according to (1),
A posture sensor for detecting the posture of the housing;
The electronic device is configured to drive the removal mechanism based on a detection result by the attitude sensor.
(3)
The electronic device according to (1) or (2),
Further comprising a light source,
The electronic device is configured to drive the removal mechanism based on an operation state of the intake mechanism and a state of the light source.
(4)
The electronic device according to (3),
The intake mechanism has a rotating fan,
The electronic device is configured to drive the removal mechanism when the input power to the light source is equal to or lower than a threshold value and the rotational speed of the rotary fan is equal to or lower than the threshold value.
(5)
The electronic device according to (3),
The controller is configured to drive the removal mechanism when the brightness of the light from the light source is less than or equal to a threshold value and the rotational speed of the rotary fan is less than or equal to the threshold value (6).
The electronic device according to any one of (1) to (5),
The removal mechanism is a solenoid.
(7)
The electronic device according to (2),
Further comprising a storage area provided in the housing for storing dust removed by driving the removal mechanism;
The threshold value for detection by the posture sensor corresponding to a reference value for determining whether or not to drive the removal mechanism is a value designed according to the size of the accommodation area.
(8)
A filter device provided in a casing of an electronic device,
Filters,
A removal mechanism that removes dust attached to the filter by receiving a control signal generated based on at least one of the attitude of the housing and the operating state of the intake mechanism and applying force to the filter. Filter device.

DESCRIPTION OF SYMBOLS 10,110 ... Housing | casing 17 ... Accommodating part 17a ... Accommodating area | region 17b ... End part 20 ... Removal mechanism 30 ... Frame member 35 ... Filter element 50 ... Filter apparatus 60 ... Control part 61 ... Functional part 62 ... Fan unit 63 ... Attitude sensor 100A, 100B ... Projector

Claims (8)

A housing,
A filter device having a filter and a removal mechanism for removing dust attached to the filter by applying force to the filter; and a filter device provided in the housing;
An intake mechanism that is provided in the housing and sucks air from outside the housing through the filter into the housing;
An electronic device comprising: a control unit configured to drive the removal mechanism based on at least one of a posture of the housing and an operating state of the intake mechanism. The electronic device according to claim 1,
A posture sensor for detecting the posture of the housing;
The electronic device is configured to drive the removal mechanism based on a detection result by the attitude sensor. The electronic device according to claim 1,
Further comprising a light source,
The electronic device is configured to drive the removal mechanism based on an operation state of the intake mechanism and a state of the light source. The electronic device according to claim 3,
The intake mechanism has a rotating fan,
The electronic device is configured to drive the removal mechanism when the input power to the light source is equal to or lower than a threshold value and the rotational speed of the rotary fan is equal to or lower than the threshold value. The electronic device according to claim 3,
The controller is configured to drive the removal mechanism when the brightness of the light from the light source is less than or equal to a threshold value and the rotation speed of the rotary fan is less than or equal to a threshold value. The electronic device according to claim 1,
The removal mechanism is a solenoid. The electronic device according to claim 2,
Further comprising a storage area provided in the housing for storing dust removed by driving the removal mechanism;
The threshold value for detection by the posture sensor corresponding to a reference value for determining whether or not to drive the removal mechanism is a value designed according to the size of the accommodation area. A filter device provided in a casing of an electronic device,
Filters,
A removal mechanism that removes dust attached to the filter by receiving a control signal generated based on at least one of the attitude of the housing and the operating state of the intake mechanism and applying force to the filter. Filter device.