JP2012044002A - Air filter device, electronic apparatus and projection video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air filter device, an electronic apparatus and a projection video display device, capable of suppressing dust from passing through an intake port even when an air filter is removed from the intake port.SOLUTION: An air filter device 3 includes an air filter 31 detachably provided on an intake port 11 and a stopper member 40 capable of stopping the air filter 31 so that the air filter 31 is not detached from the intake port 11. The stopper member 40 is configured to be movable to a position to stop the air filter 31 and a position to allow the air filter 31 to be detached from the intake port 11. The air filter device 3 also includes an open/close member 50 for opening and closing the intake port 11. When the stopper member 40 moves to the position to stop the air filter 31, the open/close member 50 opens the intake port 11. When the stopper member 40 moves to the position to allow the air filter 31 to be detached from the intake port 11, the open/close member 50 closes the intake port 11.

Description

  The present invention relates to an air filter device including an air filter that is detachably attached to an air inlet, an electronic device including the air filter device, and a projection display apparatus.

  In general, an electronic apparatus such as a projection display apparatus is a wall body provided with an air inlet, and includes a housing in which an electronic component or the like is built. Electronic components and the like can be air-cooled by sucking air outside the housing into the housing through the air inlet.

  It is also known to provide an air filter for the intake port in order to capture dust in the air that is about to pass through the intake port. Further, it is known that an air filter is detachably provided so that the air filter can be replaced (for example, see Patent Document 1).

JP 2009-54643 A

  By the way, when the air filter is replaced by removing the air filter from the air intake port and attaching another air filter to the air intake port, the air filter is removed from the air intake port. May pass.

  The present invention has been made in view of such circumstances, and an object of the present invention is to prevent dust from passing through the air intake port even when the air filter is removed from the air intake port, for example, when replacing the air filter. Another object of the present invention is to provide an air filter device, an electronic device, and a projection display device that can be used.

In the following, means for achieving the above object and its effects are described.
According to the first aspect of the present invention, there is provided a wall body provided with an air inlet, an air filter provided detachably with respect to the air inlet, and the air filter so that the air filter is not removed from the air inlet. An air filter device comprising a locking member capable of locking the air filter, wherein the locking member locks the air filter, and the air filter does not lock the air filter. An opening / closing member configured to open and close the intake port in accordance with the movement of the locking member is configured to be movable to a position allowing removal from the intake port, and the locking is performed at a position where the air filter is locked. When the member moves, the opening and closing member opens the intake port, and when the locking member moves to a position allowing the air filter to be removed from the intake port, the opening and closing member Characterized by closing the air inlet.

  According to the above configuration, the locking member is configured to be movable between a position where the air filter is locked and a position where the air filter is allowed to be removed from the intake port. For this reason, for example, the air filter attached to the intake port can be locked by a locking member so that the air filter is not removed from the intake port during use. The air filter can be removed from the mouth. Also, when the locking member moves to a position where the air filter is locked, the opening / closing member opens the intake port, and when the locking member moves to a position allowing the air filter to be removed from the intake port The opening / closing member closes the intake port. For this reason, for example, even when the air filter is removed from the intake port when the air filter is replaced, the intake port is closed by the opening / closing member, so that dust can be prevented from passing through the intake port.

A second aspect of the present invention is the air filter device according to the first aspect, wherein the locking member is fixed to the opening / closing member.
According to the above configuration, since the locking member is fixed to the opening and closing member, the intake port is mechanically opened and closed as the locking member moves.

  A third aspect of the present invention is the air filter device according to the first or second aspect, wherein the air filter is provided on a frame member, and the locking member abuts on the frame member to form the air filter. There is a locking portion that locks the frame member, and the locking portion causes the frame member to be in close contact with the wall body.

  According to the above configuration, in a state where the air filter is locked, the locking portion that contacts the frame member provided with the air filter causes the frame member to be in close contact with the wall body. For this reason, it is possible to prevent dust from passing through the intake port by preventing a gap from being formed between the frame member provided with the air filter and the wall body.

  Invention of Claim 4 is an air filter apparatus as described in any one of Claims 1-3, Comprising: A part of said latching member is in the said wall body in which the said inlet port was provided. A through hole is formed which is inserted and allows movement of the locking member.

  According to the above configuration, the wall is formed with a through hole through which a part of the locking member is inserted and the movement of the locking member is allowed. For this reason, for example, even when the locking member is fixed to the opening / closing member provided on one side of the wall body, a part of the locking member is inserted into the through-hole formed in the wall body to A locking portion can be provided on the other side of the body.

  The invention according to claim 5 is the air filter device according to claim 4, wherein the opening / closing member has a closing portion for closing the through hole, and the closing portion locks the air filter. The through hole is closed in both the state where the locking member is provided at a position where the locking member is provided and the state where the locking member is provided where the air filter is allowed to be removed from the intake port. It is characterized by doing.

  According to the above configuration, the through-hole formed in the wall body is locked at a position where the locking member is provided at a position where the air filter is locked and at a position where the air filter is allowed to be removed from the intake port. In both the state in which the member is provided, the opening / closing member is closed by the closing portion. For this reason, it can suppress that dust passes the through-hole in which a part of locking member is penetrated.

A sixth aspect of the present invention is the air filter device according to the fifth aspect, wherein the closing portion of the opening / closing member is in close contact with the wall body.
According to the said structure, the closing part of the opening / closing member which closes a through-hole is closely_contact | adhered with respect to a wall body. For this reason, it is possible to prevent dust from passing through the through hole by preventing a gap from being formed between the wall body in which the through hole is formed and the opening / closing member.

A seventh aspect of the present invention is the air filter device according to any one of the first to sixth aspects, further comprising a position detection unit that detects a position of the opening / closing member.
According to the above configuration, the air filter device includes the position detection unit that detects the position of the opening / closing member. For this reason, the detected position of the opening / closing member can be used, for example, for controlling an electronic device in which an air filter device is incorporated.

The invention according to claim 8 is characterized by including the air filter device according to any one of claims 1 to 7.
According to the said structure, since the air filter apparatus as described in any one of Claims 1-7 is provided, the effect similar to the invention as described in any one of Claims 1-7 can be acquired.

A ninth aspect of the present invention is the electronic device according to the eighth aspect of the present invention, further comprising a notification unit that notifies information related to the aspect of the intake port.
According to the above configuration, since the electronic device includes the notification unit that notifies information related to the aspect of the intake port, the user can grasp whether or not the intake port is open based on the notification by the notification unit. .

  A tenth aspect of the present invention is the electronic device according to the ninth aspect, wherein the notifying part is provided with the locking member at a position allowing the air filter to be removed from the air inlet. The opening / closing member notifies that the intake port is closed.

  According to the above configuration, when the locking member is provided at a position that allows the air filter to be removed from the intake port, the notification unit notifies that the opening / closing member is closing the intake port. For this reason, the locking member is not moved to the position where the air filter is locked, and the user is actively notified that the opening / closing member closes the air inlet.

  Invention of Claim 11 controls the lighting of the said lamp based on the air filter apparatus as described in any one of Claims 1-7, the lamp | ramp for an image display, and the aspect of the said inlet port. And a section.

  According to the said structure, lighting of a lamp is controlled based on the aspect of an inlet port. For this reason, for example, when the intake port is closed, it is possible to control the lamp not to be lit.

A twelfth aspect of the present invention is the projection display apparatus according to the eleventh aspect, wherein the control unit determines an aspect of the intake port based on a position of the opening / closing member. .
According to the above configuration, the mode of the intake port is determined based on the position of the opening / closing member. Therefore, the position of the opening / closing member is detected, and the lighting of the lamp is controlled based on the detected position of the opening / closing member.

  ADVANTAGE OF THE INVENTION According to this invention, even if an air filter is removed from an inlet port at the time of replacement | exchange of an air filter, for example, it can suppress that dust passes an inlet port.

(A) (b) The perspective view which shows the projection type video display apparatus which is an electronic device which concerns on one Embodiment of this invention. FIG. 3 is an external view showing an external appearance of an air filter device included in the projection display apparatus according to the embodiment. Sectional drawing which shows the cross section of the air filter apparatus with which the projection type video display apparatus concerning the embodiment is provided. FIG. 5 is a cross-sectional perspective view showing a wall body included in the air filter device, which is a housing of the projection display apparatus according to the embodiment. The perspective view which shows the locking member and opening-and-closing member with which the air filter apparatus which concerns on the same embodiment is provided. In the air filter device according to the same embodiment, it is a diagram showing a state in which the opening and closing member is opening the intake port, (a) is a cross-sectional view of the housing, (b) external view seen from the outside of the housing . In the air filter device according to the same embodiment, it is a diagram showing a state in which the opening and closing member is closing the intake port, (a) is a cross-sectional view of the housing, (b) external view seen from the outside of the housing . FIG. 2 is a configuration diagram showing a schematic configuration of a projection display apparatus according to the embodiment. 6 is a flowchart for explaining the operation of the projection display apparatus according to the embodiment. 6 is a flowchart for explaining the operation of the projection display apparatus according to the embodiment.

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings.
As shown in FIG. 1, a projector 1 that is an electronic device includes a housing 10 that incorporates electronic components and optical components. The projector 1 is a projection image display device that projects and displays an image on a plane such as a screen or a wall using a projection lens 63.

  As shown in FIGS. 1A and 1B, the housing 10 is provided with a cover 20 in which a large number of ventilation holes 21 are formed. The cover 20 is detachable from the housing 10. FIG. 1A is a perspective view showing a state where the cover 20 is attached to the housing 10, and FIG. 1B is a perspective view showing a state where the cover 20 is removed from the housing 10. . By attaching the cover 20 to the housing 10, the air filter 31 (see FIG. 1B) is protected by the cover 20, and by removing the cover 20 from the housing 10, the air filter 31 is necessary. Can be exchanged.

  The projector 1 includes an air filter device 3 including a housing 10, an air filter 31, and the like, and is configured so that the air filter 31 can be easily replaced. Hereinafter, the configuration of the air filter device 3 will be described with reference to FIGS. In the following description, the left-right direction and the up-down direction are directions indicated by using arrows in the drawing. The vertical direction is a direction perpendicular to the horizontal direction, and is not limited to the gravitational direction (that is, the vertical direction). 3 is a cross-sectional view showing only the housing 10 along the line AA in FIG.

  As shown in FIGS. 2 and 3, the air filter device 3 includes a housing 10 as a wall body provided with an air inlet 11, an air filter 31 provided detachably with respect to the air inlet 11, and an air filter And a locking member 40 capable of locking the air filter 31 so as not to be removed from the air inlet 11. As shown in FIG. 3, the air filter device 3 further includes an opening / closing member 50 that opens and closes the intake port 11 (see FIG. 2), and a position detection unit 34 that detects the position of the opening / closing member 50. Yes.

  The housing 10 is a wall formed of, for example, a synthetic resin. FIG. 4 is a cross-sectional perspective view of the housing 10 showing a part of the housing 10 as a cross section without showing the upper wall body 10b (see FIG. 6A) constituting the housing 10. As shown in FIGS. 2 and 4, the housing 10 is provided with a plurality of air inlets 11. Air outside the housing 10 can be sucked into the housing 10 through the air inlet 11. In the present embodiment, the intake port 11 is provided only on the upper side of the housing 10.

  Further, the housing 10 is formed with a through hole 12 into which a part of the locking member 40 is inserted. The through hole 12 is provided extending in the vertical direction so as to allow the locking member 40 inserted into the through hole 12 to move in the vertical direction. The through hole 12 is provided so as not to overlap with the air filter 31 attached to the housing 10. In the present embodiment, the two through holes 12 are provided in parallel with an interval of substantially the same length as the dimension in the left-right direction of the air filter 31 attached to the intake port 11.

  Further, as shown in FIG. 4 and the like, the housing 10 is provided with a protruding portion 13 that protrudes outward, which is the external direction of the housing 10. The projecting portion 13 is a projecting portion that projects from the air inlet forming surface 11a on the outer surface of the housing 10 where the air inlet 11 is formed. In the present embodiment, a rectangular frame-shaped projecting portion having the same size as the frame member 32 (see FIG. 2) is formed in parallel with a gap in the vertical direction and extended in the horizontal direction. Protruding portions 13 provided are provided in parallel with a gap in the left-right direction and provided extending in the up-down direction.

  In addition, inside the housing 10, the housing 10 is provided with guide portions 14 and 15 that guide the movement of the opening / closing member 50 provided inside the housing 10 in the vertical direction. The guide part 14 abuts on the end of the opening / closing member 50 in the left-right direction to guide the movement of the opening / closing member 50. Moreover, the guide part 15 contacts the engaging part 53 (refer FIG. 3 etc.) which the opening / closing member 50 has, and guides the movement of the opening / closing member 50.

  The guide portion 14 protrudes inward, which is the inner direction of the housing 10, and is a closed portion 52 (FIG. 3, etc.) that is a part of the opening / closing member 50 and constitutes an end portion in the left-right direction of the opening / closing member 50. Through the reference) and bent so as to face the inner surface of the housing 10. In the present embodiment, the two guide portions 14 are provided so as to extend in the up-down direction with an interval of substantially the same length as the dimension of the opening / closing member 50 in the left-right direction. In this way, the guide unit 14 according to the present embodiment is configured to contact the both ends of the opening / closing member 50 in the left-right direction and guide the movement of the opening / closing member 50.

  The guide portion 15 has a flat plate shape and extends upward from a lower wall body 10a (see FIG. 6A) constituting the housing 10. In this embodiment, the three guide parts 15 are provided at substantially equal intervals in the left-right direction. In this way, in the present embodiment, the guide portions 14 and 15 are configured to reliably guide the movement of the opening / closing member 50.

  The air filter 31 is a filter medium having air permeability such as a porous body. In the present embodiment, the air filter 31 has a rectangular shape that is large enough to cover the plurality of air intake ports 11, and is provided in a rectangular frame-shaped frame member 32.

  The frame member 32 is a support frame that supports the air filter 31 and is formed of, for example, a synthetic resin. The frame member 32 is provided so as to contact the outer surface of the housing 10. When the air filter 31 is locked by the locking member 40, the air filter 31 is sandwiched between the locking portion 42 of the locking member 40 and the housing 10. In the present embodiment, recesses 32a in which the outer periphery of the frame member 32 is recessed are formed at both ends of the frame member 32 in the left-right direction. The recess 32a is a locking portion fitting portion into which the locking portion 42 of the locking member 40 can be fitted. In the present embodiment, a concave portion 32 a that is recessed rightward is formed at the left end portion of the frame member 32, and a concave portion 32 a that is recessed leftward is formed at the right end portion of the frame member 32.

  The locking member 40 is formed of, for example, a synthetic resin, and a position where the air filter 31 is locked so that the air filter 31 does not come off the intake port 11, and the air filter 31 does not lock the air filter 31. It is configured to be movable to a position that allows it to be removed from. FIG. 5 is a perspective view of the locking member 40 and the opening / closing member 50 (not shown) of the housing 10 illustrated in FIGS. 2 and 3.

  As shown in FIGS. 3 and 5, the locking member 40 is provided with an extending portion 41 that extends from the outside of the housing 10 so as to be inserted into the through hole 12 and an air filter 31. And a locking portion 42 that locks the air filter 31 by contacting the frame member 32.

  The extending portion 41 is a part of the locking member 40 that is inserted into the through hole 12. In the present embodiment, the extending portion 41 inserted into the through hole 12 is further inserted into the opening / closing member 50, and is configured so that the extending portion 41 does not come out of the opening / closing member 50 using the fixing member 33. Yes. Thus, in the present embodiment, the locking member 40 is fixed to the opening / closing member 50 by the fixing member 33. Moreover, in this embodiment, the locking member 40 is provided in the both ends of the opening / closing member 50 in the left-right direction.

  The locking portion 42 protrudes in the left-right direction from the extending portion 41 so as to face the frame member 32 of the air filter 31 attached to the intake port 11. In other words, in the present embodiment, the locking portion 42 included in the locking member 40 provided at the left end of the opening / closing member 50 protrudes rightward from the extending portion 41, and the right side of the opening / closing member 50. The locking portion 42 of the locking member 40 provided at the end protrudes from the extending portion 41 toward the left.

  The opening / closing member 50 shown in FIGS. 3 and 5 is made of, for example, synthetic resin, and moves in the vertical direction together with the locking member 40, and opens / closes the intake port 11 as the locking member 40 moves. The opening / closing member 50 includes an opening / closing part 51 that opens and closes the intake port 11, a closing part 52 that closes the through hole 12, and an engaging part 53 that engages with the guide part 15.

  The opening / closing part 51 is a flat plate extending in the left-right direction. The opening / closing unit 51 is provided between the housing 10 and the guide unit 15 inside the housing 10. The intake port 11 is opened and closed by the opening / closing part 51 of the opening / closing member 50.

  The closing part 52 provided to be connected to the end of the opening / closing part 51 in the left-right direction is a flat plate extending in the up-down direction. A closing portion 52 that constitutes an end portion of the opening / closing member 50 in the left-right direction is provided between the housing 10 and the guide portion 14 inside the housing 10. In this embodiment, the closing part 52 is provided in the both ends of the opening-and-closing part 51 in the left-right direction. The closing portion 52 has a dimension that is longer in the vertical direction than the opening / closing portion 51 so that the through hole 12 extending in the vertical direction is reliably closed.

  The engaging portion 53 has a flat plate shape protruding from the opening / closing portion 51 toward the guide portion 15. In the present embodiment, three engaging portions 53 protruding toward each guide portion 15 are provided in the opening / closing portion 51, and each of the engaging portions 53 is formed so as to sandwich one guide portion 15 in the left-right direction. It is comprised by a pair of protruding piece made.

  With reference to FIGS. 6 and 7, changes in the mode of the intake port 11 accompanying the movement of the locking member 40 and the opening / closing member 50 will be described. FIGS. 6A and 6B are views showing an aspect of the air filter device 3 when the locking member 40 is provided at a position where the air filter 31 is locked, and FIGS. b) is a diagram showing an aspect of the air filter device 3 when the locking member 40 is provided at a position where the air filter 31 is allowed to be removed from the intake port 11. FIGS. 6A and 7A are cross-sectional views showing only the housing 10 along the line BB in FIGS. 6B and 7B, respectively.

  The locking member 40 and the opening / closing member 50 can be moved by manually operating the extending portion 41 or the locking portion 42 provided outside the housing 10, but a drive mechanism (illustrated) is shown. The locking member 40 and the opening / closing member 50 may be moved by providing the abbreviation).

  As shown in FIGS. 6 and 7, the locking member 40 and the opening / closing member 50 move in the vertical direction with respect to the housing 10. In a state where the air filter 31 is attached to the intake port 11, the locking member 40 slides while being in contact with the frame member 32, and the opening / closing member 50 is slid while being in contact with the housing 10.

  6 (a) and 6 (b), the locking member 40 and the opening / closing member 50 shown in FIGS. 7 (a) and 7 (b) move downward so that the air filter 31 is locked. The locking member 40 moves. At this time, the opening / closing part 51 and the closing part 52 of the opening / closing member 50 are in close contact with the inner surface of the casing 10 inside the casing 10. Then, on the outside of the housing 10, the locking portion 42 abuts on the frame member 32 to bring the frame member 32 into close contact with the protruding portion 13 constituting the outer surface of the housing 10. In this way, the movement of the frame member 32 is restricted by the locking portion 42 of the locking member 40 and the housing 10, and the movement of the air filter 31 and the frame member 32 to the outside of the housing 10 is restricted. Thus, the state in which the air filter 31 is attached to the intake port 11 is maintained.

  When the locking member 40 is moved to a position where the air filter 31 is locked, the opening / closing portion 51 of the opening / closing member 50 is lower than the intake port 11 in the vertical direction, as shown in FIG. Provided. That is, at this time, the opening / closing member 50 is in a state of opening the intake port 11.

  As shown in FIGS. 7A and 7B, the locking member 40 and the opening / closing member 50 shown in FIGS. 6A and 6B are moved upward, so that the air filter 31 is removed from the air inlet 11. The locking member 40 moves to a position where it is allowed to be moved. At this time, on the outside of the housing 10, the locking portion 42 is provided at a position where it does not contact the frame member 32 and overlaps the recess 32 a of the frame member 32. In this way, the restriction of the movement of the frame member 32 by the locking portion 42 of the locking member 40 is released, and the restriction of the movement of the air filter 31 and the frame member 32 to the outside of the housing 10 is released. As a result, the air filter 31 can be removed from the intake port 11.

  In the present embodiment, even when the locking member 40 is moved to a position where the air filter 31 is allowed to be removed from the intake port 11, the opening / closing portion 51 and the closing portion 51 of the opening / closing member 50 are closed inside the housing 10. The part 52 is in close contact with the inner surface of the housing 10. For this reason, even when the air filter 31 is removed from the intake port 11, the locking member 40 and the opening / closing member 50 are prevented from moving downward due to gravity due to friction between the opening / closing member 50 and the housing 10. It is configured.

  When the locking member 40 moves to a position that allows the air filter 31 to be removed from the intake port 11, the opening / closing portion 51 of the opening / closing member 50 covers the intake port 11 as shown in FIG. . That is, at this time, the opening / closing member 50 is in a state of closing the intake port 11.

  The position where the air filter 31 is allowed to be removed from the intake port 11 is also a position where the air filter 31 is allowed to be attached to the intake port 11. That is, when the locking member 40 is provided at the position shown in FIGS. 7A and 7B, the air filter 31 can be replaced.

  Further, the opening / closing part 51 opens and closes the intake port 11 according to the position of the locking member 40. In this embodiment, as shown in FIGS. 6B and 7B, the locking member 40 Regardless of the position, the closing portion 52 closes the through hole 12. That is, both of the state where the locking member 40 is provided at a position where the air filter 31 is locked and the state where the locking member 40 is provided at a position where the air filter 31 is allowed to be removed from the intake port 11. In the state, the closing part 52 closes the through hole 12.

  In the present embodiment, a position detection unit 34 that detects the position of the opening / closing member 50 based on the position of the closing part 52 is provided inside the housing 10. The position detection unit 34 is configured by a position detection sensor such as a push button switch.

  Since the opening / closing member 50 moves together with the locking member 40, the position of the locking member 40 can also be detected by detecting the position of the opening / closing member 50. The position detection unit 34 outputs information relating to the position detection result of the opening / closing member 50 as an electrical signal to the control unit 73 (see FIG. 8) provided in the projector 1.

  In the present embodiment, the position of the opening / closing member 50 detected by the position detection unit 34 provided in the air filter device 3 is used for controlling the projector 1, and the control unit 73 provided in the projector 1 is in the form of the intake port 11. Based on this, the lighting of the lamp 61 is controlled. Hereinafter, the configuration related to the control of the projector 1 will be described with reference to FIG.

  As shown in FIG. 8, the projector 1 includes, as optical components for displaying an image, a lamp 61 that is a light source for displaying an image, and an image generating unit 62 that generates an image using light emitted from the lamp 61. And a projection lens 63 that projects the light of the generated video.

  A lamp 61 constituted by a discharge lamp such as an ultra-high pressure mercury lamp or a metal halide lamp emits light based on power supply from a lamp power supply unit 71 provided in the projector 1. The light emitted from the lamp 61 enters the video generation unit 62.

  The image generation unit 62 includes, for example, an electro-optical device including a liquid crystal panel that is a dot matrix type light valve and a DMD (Digital Micromirror Device) in which micromirrors are arranged in a grid. A video signal is input to the video generation unit 62, and a liquid crystal panel and a DMD are driven based on the video signal. Then, the light incident on the video generation unit 62 from the lamp 61 is transmitted through the liquid crystal panel or reflected by the DMD, thereby generating a video based on the video signal.

  The projection lens 63 is a lens device that includes a lens group that projects the light of the video generated by the video generation unit 62. Accordingly, when the image light is projected from the projection lens 63 toward the outside of the projector 1, the projector 1 displays the image on a plane such as a screen or a wall.

  In addition, as a configuration for generating a video based on a video signal that is an electrical signal, the projector 1 performs a signal processing on the video signal and a video signal input unit 64 to which the video signal is input from the outside of the projector 1. And a video signal processing unit 65 to be applied.

  A video signal is input to the projector 1 from an external device such as a PC (Personal Computer) or a video playback device via a video signal input unit 64 configured by a video signal input terminal to which a video cable (not shown) is connected. Is done. Then, the video signal input to the projector 1 is subjected to signal processing such as scaling processing in the video signal processing unit 65, and the video signal subjected to the signal processing is input to the video generation unit 62. The video signal input unit 64 may be a wireless module that receives a video signal transmitted wirelessly.

  The projector 1 also includes an intake fan 66 that sucks air outside the housing 10 into the housing 10 through the air inlet 11, and a temperature detector 67 provided in the vicinity of the lamp 61.

  The intake fan 66 sucks air for cooling high-temperature components such as the lamp 61, the image generation unit 62, the lamp power supply unit 71, and the like into the casing 10 through the air filter 31 and the intake port 11, and 10 is a blower that blows the air sucked into the lamp 61 to a high temperature.

  The temperature detection unit 67 is configured by a temperature sensor for monitoring the lamp 61 that is at a high temperature. The temperature detection unit 67 detects an abnormal temperature when the temperature of the lamp 61 reaches a predetermined temperature or higher. That is, the temperature detection unit 67 detects the temperature of the lamp 61. The temperature detection unit 67 outputs information related to the temperature detection result of the lamp 61 (that is, information related to whether or not an abnormal temperature is detected) to the control unit 73 included in the projector 1 as an electrical signal.

  In addition, the projector 1 includes a lamp power supply unit 71 including a power supply circuit for the lamp 61, a power supply unit 72 that supplies power to each unit, a control unit 73 that controls each unit, a storage unit 74 that stores information, and a user And an informing unit 76 that informs the user of information relating to the mode of the air intake port 11 and the like.

  The lamp power supply unit 71 is configured by a lighting device including a circuit for lighting the lamp 61. The lamp power supply unit 71 includes, for example, a lamp ballast circuit (not shown) for supplying stable power even when the impedance of the discharge lamp that is a load (that is, load impedance) changes, and between the electrodes of the discharge lamp. An igniter circuit (not shown) for generating a dielectric breakdown is provided. When a control signal for lighting the lamp 61 is input from the control unit 73, the lamp power source unit 71 converts the power supplied from the power source unit 72 to the lamp power source unit 71 into power necessary for lighting the lamp 61. Supply to the lamp 61. Further, the lamp power supply unit 71 stops the power supply to the lamp 61 when a control signal for turning off the lamp 61 is input from the control unit 73.

  The power supply unit 72 is configured by a power supply unit that appropriately converts power input to the projector 1 from an external power supply (not shown) and supplies power to an electric circuit in the projector 1. For example, the power supply unit 72 converts AC power obtained from an external power source into DC power, and supplies the DC power to the lamp power source unit 71, the control unit 73, the video signal processing unit 65, the video generation unit 62, and the like.

  The control unit 73 is configured by an integrated circuit that performs control of the video signal processing unit 65, control of the intake fan 66, control of the lamp 61 via the lamp power supply unit 71, and the like. The control unit 73 outputs a control signal for controlling the lamp 61, that is, a control signal for turning on or off the lamp 61 to the lamp power source unit 71. Further, the control unit 73 outputs a control signal for driving the intake fan 66 to cool the lamp 61 to the intake fan 66.

  Further, the control unit 73 determines whether or not the intake port 11 is open, and when it is determined that the intake port 11 is not open (that is, it is determined that the intake port 11 is closed). Time), a control signal for operating the notification unit 76 is output to the notification unit 76. The determination as to whether or not the intake port 11 is open can be made based on information relating to the position detection result of the opening / closing member 50 input from the position detection unit 34. That is, the control unit 73 determines the mode of the intake port 11 based on the position of the opening / closing member 50.

  Further, the control unit 73 determines whether or not the temperature of the lamp 61 has become equal to or higher than a predetermined value, that is, whether or not an abnormal temperature is detected as the temperature of the lamp 61, and when it is determined that the abnormal temperature is detected, A control signal for operating the notification unit 76 is output to the notification unit 76. Whether or not an abnormal temperature has been detected as the temperature of the lamp 61 can be determined based on information related to the temperature detection result of the lamp 61 input from the temperature detection unit 67.

The storage unit 74 includes a memory that stores information, and the storage unit 74 stores information such as a program executed by the control unit 73.
The operation unit 75 includes a user interface such as a key operated by the user of the projector 1. The user can give various instructions to the control unit 73 by operating the operation unit 75.

  The notification unit 76 includes an LED (Light Emitting Diode), a speaker, and the like. When a control signal for operating the notification unit 76 is input from the control unit 73 to the notification unit 76, the notification unit 76 notifies the user of various information by emitting light or outputting sound. In the present embodiment, the notification unit 76 is configured such that when the locking member 40 is provided at a position that allows the air filter 31 to be removed from the air inlet 11, the opening / closing member 50 closes the air inlet 11. In addition, when the temperature of the lamp 61 becomes equal to or higher than a predetermined value, it is notified that the temperature of the lamp 61 has become an abnormal temperature. The notification that the opening / closing member 50 is closing the intake port 11 and the notification that the temperature of the lamp 61 has become an abnormal temperature include, for example, the light emission mode of the notification unit 76 and the sound of the notification unit 76. It can be distinguished by the output mode.

With reference to FIG. 9, the operation of the projector 1 when the lighting of the lamp 61 is started will be described.
First, the control unit 73 determines whether the intake port 11 is open based on the position of the opening / closing member 50 detected by the position detection unit 34 (step S1).

  When it is determined in step S <b> 1 that the intake port 11 is open, the control unit 73 outputs a control signal for lighting the lamp 61 to the lamp power source unit 71, so that the projector 1 turns on the lamp 61. Start (step S2).

  On the other hand, when it is determined in step S <b> 1 that the intake port 11 is not opened, the control unit 73 outputs a control signal for operating the notification unit 76 to the notification unit 76, so that the notification unit 76 of the projector 1 is operated. Then, it is notified that the intake port 11 is not open (step S3).

  If it is determined in step S1 that the intake port 11 is not opened, the projector 1 maintains the non-lighted state of the lamp 61 without the control signal for turning on the lamp 61 being output to the lamp power source 71. (Step S4).

  As described above, when the lighting of the lamp 61 is to be started, the lamp 61 is not lit when the intake port 11 is closed by the opening / closing member 50. For this reason, it can prevent that the lamp | ramp 61 becomes abnormal temperature because the inlet port 11 is closed.

Next, the operation of the projector 1 when the lamp 61 is lit will be described with reference to FIG. Note that the series of operations shown in FIG. 10 is repeated periodically.
First, similarly to step S1, the control unit 73 determines whether or not the intake port 11 is opened (step S11).

  When it is determined in step S11 that the intake port 11 is not open, the notification unit 76 of the projector 1 notifies that the intake port 11 is not open (step S12), as in step S3.

Next, the controller 73 determines whether or not an abnormal temperature is detected using the temperature detector 67 (step S13).
If it is determined in step S13 that no abnormal temperature has been detected, a control signal for turning off the lamp 61 is not output to the lamp power source 71, and the projector 1 maintains the lighting state of the lamp 61 (step S14). .

  Therefore, in the present embodiment, when the lamp 61 is lit, even if the intake port 11 is closed, if the abnormal temperature is not detected, the lamp 61 continues to be lit, so that an image is displayed. You can continue.

  On the other hand, when it is determined in step S13 that an abnormal temperature has been detected, the control unit 73 outputs a control signal for turning off the lamp 61 to the lamp power supply unit 71, whereby the projector 1 turns off the lamp 61. Then, the lighting of the lamp 61 is finished (step S15).

  If it is determined in step S13 that an abnormal temperature has been detected, the control unit 73 outputs a control signal for operating the notification unit 76 to the notification unit 76, whereby the notification unit 76 of the projector 1 causes the lamp 61 to operate. The fact that the temperature has become an abnormal temperature is notified (step S16).

  As described above, since the lamp 61 is turned off when an abnormal temperature is detected, it is possible to prevent the life of the lamp 61 from being reduced, and that the temperature of the lamp 61 has become an abnormal temperature. Since the notification is made, the user can grasp the cause of the lamp 61 being extinguished.

According to the present embodiment, the following effects can be obtained.
(1) The locking member 40 is configured to be movable between a position where the air filter 31 is locked and a position where the air filter 31 is allowed to be removed from the intake port 11 without locking the air filter 31. Yes. For this reason, the air filter 31 attached to the intake port 11 can be locked by the locking portion 40 material so that the air filter 31 is not removed from the intake port 11 when used, for example. The air filter 31 can be removed from the intake port 11 by moving 40. The projector 1 includes an opening / closing member 50 that opens and closes the intake port 11 as the locking member 40 moves. When the locking member 40 moves to a position where the air filter 31 is locked, the opening / closing member 50 is The opening / closing member 50 closes the intake port 11 when the intake port 11 is opened and the locking member 40 moves to a position that allows the air filter 31 to be removed from the intake port 11. For this reason, for example, even when the air filter 31 is removed from the intake port 11 when the air filter 31 is replaced, the intake port 11 is closed by the opening / closing member 50, so that dust is prevented from passing through the intake port 11. be able to. As a result, it is possible to prevent dust from flowing from the outside to the inside of the housing 10.

  (2) The locking member 40 is fixed to the opening / closing member 50. For this reason, the intake port 11 is mechanically opened and closed as the locking member 40 moves. In the above embodiment, the locking member 40 is fixed to the opening / closing member 50 using the fixing member 33.

  (3) The air filter 31 is provided on the frame member 32, and the locking member 40 has a locking portion 42 that contacts the frame member 32 and locks the air filter 31, and the locking portion 42 is the frame member 32. Is brought into close contact with the housing 10. For this reason, a gap is not formed between the frame member 32 provided with the air filter 31 and the housing 10 which is a wall provided with the intake port 11 so that dust does not pass through the intake port 11. Can be.

  (4) An extension 41 that is a part of the locking member 40 is inserted into the housing 10 that is a wall provided with the intake port 11, and the through-hole 12 that allows the locking member 40 to move. Is formed. For this reason, even when the locking member 40 is fixed to the opening / closing member 50 provided on one side of the housing 10, a part of the locking member 40 is inserted into the through hole 12 formed in the housing 10. A certain extended portion 41 can be inserted to provide a locking portion 42 on the other side of the housing 10.

  (5) The opening / closing member 50 includes a closing portion 52 that closes the through hole 12, and the closing portion 52 includes a state in which the locking member 40 is provided at a position where the air filter 31 is locked, and the air filter 31 is The through-hole 12 is closed in both of the states where the locking member 40 is provided at a position allowing the removal from the intake port 11. For this reason, it can suppress that dust passes through the through-hole 12 in which a part of the locking member 40 is inserted.

  (6) The closing portion 52 of the opening / closing member 50 is brought into close contact with the housing 10. For this reason, it is possible to prevent a dust from passing through the through-hole 12 by preventing a gap from being formed between the casing 10, which is a wall body in which the through-hole 12 is formed, and the opening / closing member 50.

  (7) The air filter device 3 includes a position detection unit 34 that detects the position of the opening / closing member 50. Therefore, the detected position of the opening / closing member 50 can be used for control of the projector 1 which is an electronic device in which the air filter device 3 is incorporated.

  (8) The projector 1 that is an electronic device includes the air filter device 3 having the above-described configuration. For this reason, the effects described in (1) to (7) can be obtained by the projector 1.

  (9) The projector 1 includes a notification unit 76 that notifies information related to the aspect of the air inlet 11. For this reason, the user can grasp whether or not the intake port 11 is open based on the notification by the notification unit 76.

  (10) The notification unit 76 indicates that the opening / closing member 50 closes the intake port 11 when the locking member 40 is provided at a position that allows the air filter 31 to be removed from the intake port 11. Inform. For this reason, the locking member 40 is not moved to the position where the air filter 31 is locked, and the user is actively notified that the opening / closing member 50 closes the air inlet 11.

  (11) The projector 1 that is a projection video display device includes the air filter device 3, a video display lamp 61, and a control unit 73 that controls the lighting of the lamp 61 based on the mode of the intake port 11. Yes. Therefore, since the lighting of the lamp 61 is controlled based on the mode of the air inlet 11, it is possible to control the lamp 61 not to be lighted when the air inlet 11 is closed.

  (12) The control unit 73 determines the mode of the intake port 11 based on the position of the opening / closing member 50. Therefore, the position of the opening / closing member 50 is detected, and the lighting of the lamp 61 is controlled based on the detected position of the opening / closing member 50.

  In addition, this invention is not limited to the said embodiment, A various design change is possible based on the meaning of this invention, and they are not excluded from the scope of the present invention. For example, the above embodiment may be modified as follows, or the following modifications may be combined.

  -The number, arrangement, shape, and the like of the air inlet 11 may be changed. In addition, the material forming the casing 10, the frame member 32, the locking member 40, and the opening / closing member 50, the shapes of the casing 10, the frame member 32, the locking member 40, and the opening / closing member 50 may be changed as appropriate. .

  -The housing | casing 10 which is a wall body in which the inlet port 11 is provided may be comprised by the some wall body. That is, for example, the wall body provided with the intake port 11, the lower wall body 10a, and the upper wall body 10b may be separate wall bodies that can be separated from each other. From the viewpoint of ease of molding of the housing 10 and ease of assembly of the air filter device 3, the wall body provided with the intake port 11, the lower wall body 10a, and the upper wall body 10b may be separate wall bodies. preferable.

  In the above embodiment, the air filter 31 is locked by the locking portion 42 coming into contact with both ends of the frame member 32 in the left-right direction, but the locking portion is only at one end of the frame member 32 in the left-right direction. You may comprise so that 42 may contact | abut. That is, the air filter 31 may be locked using one locking member 40.

  -The engaging part 53 does not need to be comprised by a pair of protrusion piece. That is, if the engagement portion 53 is engaged with the guide portion 15 and the movement of the opening / closing member 50 is guided by the guide portion 15, the shape of the engagement portion 53 may be changed as appropriate.

  One of the guide unit 14 and the guide unit 15 may not be provided. Moreover, the number of the guide parts 14 may be one. Moreover, you may change the number of the guide parts 15 suitably. Furthermore, you may change the shape of the guide parts 14 and 15 suitably.

  In the above embodiment, the position of the intake port 11 is determined based on the position of the opening / closing member 50 using the position detection unit 34, but the intake port 11 is opened without using the position detection unit 34. It may be determined whether or not.

  In the above embodiment, the locking member 40 is fixed to the opening / closing member 50 using the fixing member 33. However, if the opening / closing member 50 and the locking member 40 are fixed to each other, the fixing member 33 is used. It may not be used. That is, the fixing means of the opening / closing member 50 and the locking member 40 is not limited.

  In the above embodiment, the locking member 40 may not be fixed to the opening / closing member 50. That is, it is only necessary that the opening / closing member 50 can open and close the intake port 11 as the locking member 40 moves. For example, the opening / closing member 50 can be opened and closed according to the movement of the locking member 40 using mechanical elements such as gears or electronic control. The member 50 may be configured to open and close the intake port 11.

  In the above embodiment, the electronic device including the air filter device 3 is the projector 1 that is a projection video display device, but other electronic devices may have the above-described configuration. That is, the present invention is not limited to the application of the projection display apparatus, and the present invention can be applied to other electronic devices such as a television receiver and an audio device.

  DESCRIPTION OF SYMBOLS 1 ... Projector (projection type video display apparatus, electronic device), 3 ... Air filter apparatus, 10 ... Housing | casing (wall body), 10a ... Lower side wall body, 10b ... Upper side wall body, 11 ... Air inlet, 11a ... Air inlet Forming surface, 12 ... through hole, 13 ... projection part, 14,15 ... guide part, 20 ... cover, 21 ... ventilation hole, 31 ... air filter, 32 ... frame member, 32a ... recess, 33 ... fixing member, 34 ... Position detecting unit, 40 ... locking member, 41 ... extending portion, 42 ... locking unit, 50 ... opening / closing member, 51 ... opening / closing unit, 52 ... closing unit, 53 ... engaging unit, 61 ... lamp, 62 ... video Generating unit, 63 ... projection lens, 64 ... video signal input unit, 65 ... video signal processing unit, 66 ... intake fan, 67 ... temperature detection unit, 71 ... lamp power supply unit, 72 ... power supply unit, 73 ... control unit, 74 ... storage unit, 75 ... operation unit, 76 ... notification unit.

Claims (12)

A wall body provided with an air inlet, an air filter provided detachably with respect to the air inlet, and a member capable of locking the air filter so that the air filter is not removed from the air inlet. An air filter device comprising a stop member,
The locking member is configured to be movable between a position where the air filter is locked and a position where the air filter is allowed to be removed from the intake port without locking the air filter.
An opening and closing member that opens and closes the intake port in accordance with the movement of the locking member;
When the locking member moves to a position for locking the air filter, the opening and closing member opens the intake port,
The air filter device, wherein the opening / closing member closes the intake port when the locking member moves to a position allowing the air filter to be removed from the intake port.   The air filter device according to claim 1, wherein the locking member is fixed to the opening / closing member. The air filter is provided on the frame member,
The locking member includes a locking portion that contacts the frame member and locks the air filter, and the locking portion causes the frame member to be in close contact with the wall body. Item 3. The air filter device according to Item 1 or 2.   The wall body provided with the intake port is formed with a through hole that allows a part of the locking member to be inserted and allows the movement of the locking member. The air filter device according to claim 3.   The opening / closing member has a closing portion that closes the through hole, and the closing portion includes a state in which the locking member is provided at a position where the air filter is locked, and the air filter is connected to the intake port. 5. The air filter device according to claim 4, wherein the through hole is closed in both of the states in which the locking member is provided at a position where it is allowed to be removed.   The air filter device according to claim 5, wherein the closing portion of the opening / closing member is in close contact with the wall body.   The air filter device according to any one of claims 1 to 6, further comprising a position detection unit that detects a position of the opening / closing member.   An electronic apparatus comprising the air filter device according to any one of claims 1 to 7.   The electronic device according to claim 8, further comprising a notification unit that notifies information related to the aspect of the air inlet. The notification unit notifies that the opening / closing member closes the intake port when the locking member is provided at a position allowing the air filter to be removed from the intake port. The electronic device according to claim 9.   The air filter device according to claim 1, a video display lamp, and a control unit that controls lighting of the lamp based on an aspect of the intake port. Projection display device.   The projection display apparatus according to claim 11, wherein the control unit determines an aspect of the intake port based on a position of the opening / closing member.

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