JP2011128433A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device capable of maintaining normal operation of an image display panel. <P>SOLUTION: The image display device has the image display panel 1, and a housing 2 which houses the image display panel 1. The housing 2 is provided with an image display window 20, which makes a screen 10 of the image display panel 1 viewable from the outside. In the housing 2, a ventilation section 3 is formed for communication between the outside and the inside of the housing 2, and a blast fan 71 is arranged for introducing air from the ventilation section 3 into the casing 2. A pair of filters 33, 34 is installed in the ventilation section 3, and one filter 33 of the pair of the filters 33, 34 is provided separately from the other filter 34 in an outside region than the installation region of the other filter 34. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image display device including an image display panel.

  This type of image display device includes a housing that accommodates an image display panel, and the housing is provided with an image display window that allows the screen of the image display panel to be visually recognized from the outside (for example, Patent Documents). 1).

  Most conventional image display devices are designed on the assumption that they are installed indoors, and sunlight enters from an image display window and the screen of the image display panel is heated by the sunlight. Not expected.

JP 2005-286987 A

  By the way, in recent years, it has been considered that an image display device provided with an image display panel is permanently installed outdoors, or that the image display device is installed in other devices such as vending machines installed outdoors. . Since the thickness of the image display device is small, it is possible to install the image display device in a narrow place, and even if the image display device is mounted in another device such as a vending machine, it is difficult to increase the size of the device.

  However, when the conventional image display device is permanently installed outdoors, or when the conventional image display device is directly installed in another device such as a vending machine, the image display is performed by the incidence of sunlight from the image display window. There is a risk that the temperature of the screen of the panel will rise excessively and an abnormality will occur in the operation of the image display panel.

  In order to suppress the temperature rise of the screen of the image display panel, it is conceivable to cool the image display panel in the casing by sucking outside air into the casing. However, dust, iron powder, and the like are included in the air outside the housing. For this reason, when external air is sucked into the housing, dust, iron powder, or the like enters the housing together with the air, and the image display panel may break down due to the dust, iron powder, or the like.

  Accordingly, an object of the present invention is to provide an image display apparatus capable of maintaining normal operation of an image display panel.

  An image display device according to the present invention includes an image display panel and a housing that accommodates the image display panel, and the housing is provided with an image display window that allows the screen of the image display panel to be visually recognized from the outside. It has been. Here, the casing is formed with a ventilation portion that allows the outside and the inside of the casing to communicate with each other, and is provided with a blowing unit that guides air from the ventilation portion into the casing. A pair of filters are installed, and one of the pair of filters is provided in a region outside the region where the other filter is installed, separated from the other filter.

  According to the image display device, air outside the casing is sucked into the casing from the ventilation portion by the operation of the air blowing means, and the image display panel is cooled by the air. Therefore, even when sunlight enters from the image display window and the screen of the image display panel is heated by the sunlight, the temperature increase of the image display panel is suppressed, and as a result, normal operation of the image display panel is maintained. Will be.

  Furthermore, according to the image display device, dust, iron powder, and the like contained in the air outside the housing are removed by the pair of filters when the air passes through the ventilation portion. Accordingly, air containing almost no dust, iron powder, or the like is sucked into the housing, and as a result, failure of the image display panel caused by dust, iron powder, or the like is prevented. . Further, by providing the pair of filters apart from each other, the filter removal performance is improved as compared with the case where the pair of filters are provided in contact with each other.

  On the other hand, dust, iron powder and the like removed by the filter accumulate on the filter. When the accumulation amount of dust or iron powder increases, the filter is clogged, and the filter prevents the air from being sucked into the housing. As a result, the amount of air sucked into the housing is reduced, and the temperature of the image display panel is increased. When the filter is clogged, it is necessary to replace the filter. On the other hand, if the replacement time is passed, the temperature of the image display panel rises excessively and the operation of the image display panel is likely to be abnormal.

  Therefore, in the specific configuration of the image display device, the image display device changes according to the temperature sensor that acquires temperature information that changes according to the temperature of the image display panel and / or the velocity of the air flowing through the ventilation section. A wind speed sensor for acquiring wind speed information, a notification means for performing a notification operation for notifying that the filter is clogged, temperature information acquired by the temperature sensor and / or a wind speed sensor. Control means for controlling the notification operation of the notification means based on the wind speed information.

  According to the specific configuration, the occurrence of the clogging can be notified immediately after the filter is clogged. Accordingly, it is possible to prevent the temperature of the image display panel from excessively rising due to the time for replacing the filter. When the filter is clogged, the speed of the air exhausted through the filter is larger than when there is no clogging.

  According to the image display device of the present invention, it is possible to maintain the normal operation of the image display panel.

FIG. 1 is a perspective view of an image display device according to an embodiment of the present invention as viewed from the front side. FIG. 2 is a perspective view of the image display device as seen from the back side. FIG. 3 is a perspective view of the image display device with the rear wall of the housing removed, as viewed from the rear side. FIG. 4 is a horizontal sectional view of the image display device. FIG. 5 is a perspective view of a disassembled part of the image display device as seen from the back side. FIG. 6 is a perspective view of a flow path forming member provided in the image display device. FIG. 7 is an enlarged view of a region A shown in FIG. FIG. 8 is an enlarged view of region B shown in FIG. FIG. 9 is a block diagram showing a configuration for notifying filter clogging in the image display device. FIG. 10 shows an embodiment of the image display device.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
1. Configuration of Image Display Device As shown in FIG. 1, an image display device according to an embodiment of the present invention includes a liquid crystal display panel (1) and a housing (2) that houses the liquid crystal display panel (1). In addition, the front wall (21) of the housing (2) is provided with an image display window (20) that makes the screen (10) of the liquid crystal display panel (1) visible from the outside. Here, the image display window (20) is composed of a light transmission plate such as a glass plate. The liquid crystal display panel (1) is installed in the housing (2) with a gap between the screen (10) and the image display window (20).

  As shown in FIG. 3, the housing (2) further accommodates a circuit board (11) for controlling the liquid crystal display panel (1), and the circuit board (11) is provided on the back surface of the liquid crystal display panel (1). Is installed.

  As shown in FIG. 4, a pair of left and right vents (31) and (41) are established in the back wall (22) of the housing (2) from the outside to the inside of the housing (2). A pair of duct portions (32) and (42) are provided so as to surround the pair of vent holes (31) and (41), respectively. The pair of duct portions (32) and (42) respectively extend sideways in opposite directions along the back wall (22) of the housing (2) from the pair of vents (31) and (41). The parts (320) and (420) are facing sideways. Thus, a pair of ventilation portions (3) (3) (in which the outside and the inside of the housing (2) communicate with each other by the pair of ventilation ports (31), (41) and the pair of duct portions (32), (42). 4) is configured.

  In the present embodiment, as shown in FIG. 2, a pair of ventilation portions (3) and (4) are provided at three locations of the upper, middle, and lower stages of the back wall of the housing (2).

  As shown in FIG. 4, inside the housing (2), there is a pair of windows that pass between the screen (10) of the liquid crystal display panel (1) and the image display window (20) of the housing (2). A flow path (5) for communicating the vent holes (31) and (41) is formed. Specifically, the flow path (5) includes a first flow path section (51) extending along the screen (10) of the liquid crystal display panel (1), and the liquid crystal display panel from the first flow path section (51). And (1) a pair of second flow passage portions (52) and (53) extending rearward through the left and right sides, and the pair of second flow passage portions (52) and (53) are respectively paired. Vents (31) and (41).

  Here, the first flow path portion (51) is formed by the screen (10) of the liquid crystal display panel (1) and the image display window (20) of the housing (2). The pair of second flow path portions (52) and (53) are each formed by a pair of flow path forming members (61) and (62) as shown in FIG.

  Of the pair of flow path forming members (61) and (62), the flow path forming member (61) on the right side (hereinafter simply referred to as “right side”) as viewed from the back side is shown in FIG. Openings (611) are formed in the upper, middle, and lower stages of the back wall (61a), and as shown in FIG. A passage forming portion (613) is formed to project forward. The three openings (611), (611), (611) and the passage (612) communicate with each other through a space in the right flow path forming member (61).

  As shown in FIGS. 4 and 7, in the assembled state of the image display device, the passage forming portion of the right channel forming member (61) is provided between the right side surface of the liquid crystal display panel (1) and the housing (2). (613) is inserted, whereby the space in the right channel forming member (61), that is, the second channel portion (52) communicates with the first channel portion (51). In the assembled state of the image display device, the three openings (611), (611), and (611) formed in the right channel forming member (61) are respectively provided on the rear wall (22) of the housing (2). ) Opposite the three vents (31), (31), (31) provided at the three locations of the upper, middle, and lower tiers. It leads to the space in the ventilation part (3) via the (611) and the ventilation hole (31).

  Here, as shown in FIG. 7, the front wall (61b) of the right channel forming member (61) is inclined with respect to the back surface of the liquid crystal display panel (1). Therefore, the second flow path portion (52) formed by the right flow path forming member (61) has a shape that gradually expands rearward after passing through the right side surface of the liquid crystal display panel (1). is doing. In addition, a gap between the front wall (61b) of the right channel forming member (61) and the back surface of the liquid crystal display panel (1) that leads to a space near the center on the back side of the liquid crystal display panel (1) ( 201) is formed.

  Of the pair of flow path forming members (61) and (62), the flow path forming member (62) on the left side (hereinafter, simply referred to as “left side”) as viewed from the back side is shown in FIG. Openings (621) are formed in the upper, middle, and lower stages of the rear wall (62a), and the front wall (62b) is similar to the right channel forming member (61) (see FIG. 5). A passage forming portion (623) that forms a slit-like passage extending in the vertical direction is projected forward (see FIG. 4).

  As shown in FIG. 4, in the assembled state of the image display device, the passage forming portion (623) of the left channel forming member (62) between the left side surface of the liquid crystal display panel (1) and the housing (2). As a result, the space in the left flow path forming member (62), that is, the second flow path portion (53) communicates with the first flow path portion (51). In the assembled state of the image display device, the three openings (621), (621), and (621) formed in the left flow path forming member (62) are respectively provided on the rear wall (22) of the housing (2). ) Opposite the three vents (41), (41), and (41) that are opened in the upper, middle, and lower stages, so that the space in the left flow path forming member (62) It leads to the space in the ventilation part (4) through the (621) and the ventilation hole (41).

  Here, as shown in FIG. 8, the front wall (62b) of the left channel forming member (62) is inclined with respect to the back surface of the liquid crystal display panel (1). Accordingly, the second flow path portion (53) formed by the left flow path forming member (62) has a shape that gradually extends rearward after passing through the left side surface of the liquid crystal display panel (1). is doing. In addition, a gap between the front wall (62b) of the left channel forming member (62) and the back surface of the liquid crystal display panel (1) that leads to a space near the center of the back side of the liquid crystal display panel (1) ( 202) is formed.

  Furthermore, as shown in FIG. 6, three through holes (614) (614) (614) are formed in the front wall (61b) of the right channel forming member (61). Here, as described above, a gap (201) is formed between the front wall (61b) and the back surface of the liquid crystal display panel (1), leading to a space near the center of the back side of the liquid crystal display panel (1). Has been. Therefore, as shown in FIG. 7, the second flow path portion (52) formed by the right flow path forming member (61) is located on the back side of the liquid crystal display panel (1) through each through hole (614). Leads to the space.

  Similarly, three through holes (624), (624), and (624) are formed in the front wall (62b) of the left channel forming member (62) (see FIG. 8). Here, as described above, a gap (202) is formed between the front wall (62b) and the back surface of the liquid crystal display panel (1), leading to a space near the center of the back side of the liquid crystal display panel (1). Has been. Therefore, as shown in FIG. 8, the second flow path portion (53) formed by the left flow path forming member (62) is provided on the back side of the liquid crystal display panel (1) through each through hole (624). Leads to the space.

  In this way, inside the housing (2), as shown in FIG. 4, a flow path that allows the pair of vent holes (31) and (41) to communicate with each other through the front side of the liquid crystal display panel (1). In addition to (5), a second channel (54) is formed which passes through the back side of the liquid crystal display panel (1) and communicates the pair of vents (31) and (41).

  As shown in FIG. 4, a blower fan (71) is connected to the right vent (31) on the right side of the rear wall (22) of the housing (2), and the direction of airflow is changed to the housing (2). It is fitted with the posture toward the inside. Therefore, when the air blowing operation of the blower fan (71) is executed, the air in each duct part (32) on the right side enters the second flow path part (52) as shown by the solid line arrow in FIG. The air sucked and sucked into the second flow path portion (52) flows into the first flow path portion (51) from the right end thereof.

  On the other hand, the left vent holes (41) provided in the rear wall (22) of the housing (2) are fitted in a posture in which the air blowing direction faces the outside of the housing (2). . Therefore, when the air blowing operation of the blower fan (72) is executed, the air in the second flow path part (53) is moved into the left duct part (42) as shown by the solid arrow in FIG. As a result, the air in the first flow path part (51) flows out from the left end of the first flow path part (51) into the second flow path part (53).

  As a result, an air flow from right to left is generated in the first flow path portion (51) as shown by a solid arrow in FIG. 4, and as a result, in the flow path (5), An air flow from the right vent (31) to the left vent (41) is generated. In this way, when air flows in the flow path (5), air outside the housing (2) is sucked into the second flow path section (52) through the right ventilation sections (3), The air in the second flow path portion (53) is discharged to the outside of the housing (2) through the left ventilation portion (4).

  In addition, as the air blowing operation is performed by the two blower fans (71) and (72) and the air flow is generated in the flow path (5), the air sucked through the right ventilation portions (3). Part of the liquid crystal passes through the back side of the liquid crystal display panel (1) and is discharged to the outside of the housing (2) from the left vents (4). In the following, “right side” is referred to as “intake side” and “left side” is referred to as “exhaust side”.

  As shown in FIG. 7, a pair of filters (33) and (34) are installed in the duct part (32) constituting the ventilation part (3). Specifically, of the pair of filters (33) and (34), one filter (33) is provided in the open end (320) of the duct portion (32), and the other filter (34) is ventilated. It is provided in a region near the mouth (31), and a space is provided between these filters (33) and (34). That is, one filter (33) is provided in a region outside the installation region of the other filter (34) and spaced from the other filter (34).

  As shown in FIG. 8, a pair of filters (43) and (44) are installed in the duct part (42) constituting the ventilation part (4). Specifically, of the pair of filters (43) and (44), one filter (43) is provided in the open end (420) of the duct portion (42), and the other filter (44) is a vent. It is provided in a region near the mouth (41), and a space is provided between these filters (43) and (44). That is, one filter (43) is provided apart from the other filter (44) in a region outside the installation region of the other filter (44).

  In the image display device, a flow path (5) is formed in the housing (2), which passes through the front side of the liquid crystal display panel (1) and allows the pair of vents (31) and (41) to communicate with each other. ing. In addition, by performing the air blowing operation of the two air blowing fans (71) and (72), the air flow side (31) from the intake side is directed to the air flow side (41) on the exhaust side in the flow path (5). Along with this, air outside the housing (2) is sucked into the flow path (5) through the air intakes (3) on the intake side, and through the air vents (4) on the exhaust side. Air in the flow path (5) is discharged to the outside of the housing (2).

  Accordingly, the air outside the casing (2) sucked into the flow path (5) flows between the screen (10) of the liquid crystal display panel (1) and the image display window (20) of the casing (2). At that time, heat is absorbed from the screen (10) of the liquid crystal display panel (1). And the air warmed by the absorbed heat is discharged to the outside of the housing (2) through each exhaust part (4) on the exhaust side. Thereby, the screen (10) of the liquid crystal display panel (1) is cooled by the air outside the housing (2). Therefore, even when sunlight enters from the image display window (20) and the screen (10) of the liquid crystal display panel (1) is heated by the sunlight, the temperature of the screen (10) of the liquid crystal display panel (1) The rise is suppressed, and as a result, the normal operation of the liquid crystal display panel (1) is maintained.

  In the image display device, the second flow path (54) that passes through the back side of the liquid crystal display panel (1) and communicates between the pair of vent holes (31) and (41) in the housing (2). ) Is formed. In addition, as the air blowing operation is performed by the two air blowing fans (71) and (72) and the air flow is generated in the flow path (5), the air is sucked through the respective ventilation portions (3) on the intake side. Part of the air passes through the back side of the liquid crystal display panel (1), and is discharged from the exhaust side vents (4) to the outside of the housing (2).

  Therefore, the liquid crystal display panel (1) is also cooled from the back side by the air outside the housing (2), and as a result, the entire liquid crystal display panel (1) is efficiently cooled. Further, the circuit board (11) installed on the back surface of the liquid crystal display panel (1) is cooled by the air outside the housing (2), and as a result, the circuit board (11) is prevented from being damaged by overheating. It will be.

  In the image display device, a pair of filters (33) and (34) are installed in a duct portion (32) that constitutes a ventilation portion (3) on the intake side. Accordingly, dust, iron powder, and the like contained in the air outside the housing (2) are removed by the pair of filters (33) and (34) when the air passes through the ventilation portion (3). become. Therefore, air containing almost no dust or iron powder is sucked into the flow path (5).

  A pair of filters (43) and (44) are also installed in the duct portion (42) constituting the ventilation side (4) on the exhaust side. Accordingly, dust, iron powder, and the like that are about to enter the flow path (5) from the ventilation portion (4) are removed by the pair of filters (43) and (44).

  Therefore, according to the image display device, failure of the liquid crystal display panel (1) caused by dust, iron powder, or the like is prevented.

  Further, in the image display device, a pair of filters (33) and (34) are provided apart from each other. Therefore, the filter removal performance is improved as compared with the case where the pair of filters (33) and (34) are provided in contact with each other. The same applies to the pair of filters (43) and (44).

2. Configuration for Notifying Clogging of Filters The pair of filters (33) (34) installed in the ventilation part (3) on the intake side includes dust removed by these filters (33) (34). And iron powder will accumulate. When the amount of accumulated dust or iron powder increases, the filter (33) (34) becomes clogged, and the filter (33) (34) prevents the air from being sucked into the flow path (5). . As a result, the amount of air sucked into the flow path (5) decreases, and the temperature of the liquid crystal display panel (1) rises. When the filter (33) (34) is clogged, it is necessary to replace the filter. On the other hand, if the replacement time is passed, the temperature of the liquid crystal display panel (1) will rise excessively and the liquid crystal display panel Abnormality is likely to occur in the operation of 1). The same applies when the filters (43) and (44) installed in the exhaust side ventilation section (4) are clogged and the amount of air discharged from the flow path (5) is reduced.

  Therefore, as shown in FIG. 9, the image display device according to the present embodiment includes a temperature sensor (81) that acquires temperature information that changes in accordance with the temperature of the liquid crystal display panel (1), and an intake-side vent ( 3) A wind speed sensor (82) that acquires wind speed information that changes in accordance with the speed of the air flowing inside, and a notification for executing a notification operation for notifying that clogging has occurred in the filters (33) and (34) And a control unit (84) for controlling the notification operation of the notification unit (83) based on the temperature information acquired by the temperature sensor (81) and the wind speed information acquired by the wind speed sensor (82). It also has more.

  Here, as shown in FIG. 7, the temperature sensor (81) is installed in the flow path forming member (61) on the intake side. In addition, the wind speed sensor (82) is installed in a region between the pair of filters (33) and (34) in the ventilation section (3) on the intake side, and corresponds to the speed of air discharged from the filter (33). Wind speed information that changes. When the filter (33) is clogged, the speed of the air discharged through the filter (33) is larger than that when there is no clogging.

  As shown in FIG. 9, the controller (84) determines whether or not the temperature of the liquid crystal display panel (1) is higher than a predetermined temperature based on the temperature information acquired by the temperature sensor (81). And a second determination unit (842) for determining whether or not the speed of the air flowing through the ventilation unit (3) is greater than a predetermined speed based on the wind speed information acquired by the wind speed sensor (82). And a command unit (843) that commands the notification unit (83) to execute the notification operation based on the determination results of the first determination unit (841) and the second determination unit (842).

  Specifically, the command unit (843) causes the temperature of the liquid crystal display panel (1) to rise due to clogging in one of the pair of filters (33) and (34), and the first determination is made. Of the liquid crystal display panel (1) is determined to be higher than a predetermined temperature by the section (841) or the filter (33) is clogged, and the velocity of the air flowing through the ventilation section (3) on the intake side When the second determination unit (842) determines that the speed of the air flowing through the ventilation unit (3) is larger than a predetermined speed, the notification unit (83) is instructed to execute the notification operation.

  In the image display device according to the present embodiment, as shown in FIG. 8, temperature information that changes in accordance with the temperature of the liquid crystal display panel (1) is acquired in the flow path forming member (62) on the exhaust side. 2 temperature sensor (85) is installed, and the second wind speed for acquiring wind speed information that changes in accordance with the speed of the air flowing through the ventilation section (4) in the ventilation section (4) on the exhaust side. A sensor (86) is installed. The control unit (84) performs the same control as that described above based on the temperature information acquired by the second temperature sensor (85) and the wind speed information acquired by the second wind speed sensor (86). It is executed (see FIG. 9).

  According to the image display device, any one of the filters (33) and (34) in the intake side ventilation section (3) and the filters (43) and (44) in the exhaust side ventilation section (4) is considered. Immediately after the clogging occurs, the occurrence of the clogging is notified by the notification unit (83). Therefore, it is possible to prevent the temperature of the liquid crystal display panel (1) from rising excessively by losing the replacement time of the filters (33) and (34).

3. Embodiment of Image Display Device The image display device described above can be used by being mounted on a vending machine (101) installed outdoors as shown in FIG. In FIG. 10, the image display device is denoted by reference numeral (100). The vending machine (101) is formed with a window (102) for mounting the image display device (100), and both sides of the mounting area of the image display device (100) are extended to the bottom surface of the vending machine (101). A pair of extending second duct portions (103) (104) are provided. The lower ends of the pair of second duct portions (103) and (104) both open to the bottom surface of the vending machine (101), and the upper ends of the pair of second duct portions (103) and (104) are Each has a shape that can be connected to the left and right duct portions (32) and (42) provided in the image display device (100).

  According to the above-described embodiment, the air outside the vending machine (101) flows into the flow path (5) of the image display device (100) through the pair of duct portions (103) and (104) of the vending machine (101). While being inhaled, the air in the flow path (5) is discharged to the outside of the vending machine (101). As a result, the normal operation of the image display device (100) is also maintained in the vending machine (101).

  In addition, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim. In the image display device, the pair of second flow path portions (52) and (53) extend rearward from the first flow path portion (51) through the left and right sides of the liquid crystal display panel (1). However, the present invention is not limited to this. For example, the pair of second flow path portions (52) and (53) may extend rearward from the first flow path portion (51) through both the upper and lower sides of the liquid crystal display panel (1).

  In the image display device, the pair of vents (31) and (41) are provided on the back wall (22) of the housing (2) in a side-by-side positional relationship. It is not limited to. For example, the pair of vents (31) and (41) may be provided on the back wall (22) of the housing (2) in a vertical relationship, or may be provided on both side walls of the housing (2). Each may be established.

  Furthermore, the image display device may have a configuration in which only one of the blower fans (71) and (72) is provided. Further, in the above image display device, the control unit (84) performs the notification operation of the notification unit (83) based only on information acquired by any one of the temperature sensor (81) and the wind speed sensor (82). May be controlled. Similarly, the control unit (84) notifies the notification unit (83) based only on information acquired by either one of the second temperature sensor (85) and the second wind speed sensor (86). The operation can be controlled.

  Furthermore, the various configurations employed in the image display device are not limited to the image display device including the liquid crystal display panel (1), but various image display panels such as a plasma display panel and an organic EL (Electro-Luminescence) display panel. It can be applied to an image display device comprising

(1) Liquid crystal display panel (image display panel)
(10) Screen
(2) Case
(20) Image display window
(3) Ventilation part
(31) Vent
(33) (34) A pair of filters
(4) Ventilation part
(41) Vent
(43) (44) A pair of filters
(5) Flow path
(51) First flow path
(52) (53) Second channel section
(54) Second channel
(61) (62) Channel forming member
(614) (624) Through hole
(71) (72) Blower fan (Blower unit)
(81) (85) Temperature sensor
(82) (86) Wind sensor
(83) Notification section (notification means)
(84) Control unit (control means)

Claims (2)

In an image display device comprising an image display panel and a housing for housing the image display panel, the housing being provided with an image display window that allows the screen of the image display panel to be visually recognized from the outside.
The casing is formed with a ventilation portion that allows the outside and the inside of the casing to communicate with each other, and is provided with air blowing means that guides air from the ventilation portion into the casing, and a pair of filters is provided in the ventilation portion. The image display device is characterized in that one of the pair of filters is provided in a region outside the region where the other filter is installed, separated from the other filter.   The filter is clogged with a temperature sensor that acquires temperature information that changes according to the temperature of the image display panel and / or a wind speed sensor that acquires wind speed information that changes according to the speed of the air flowing through the ventilation section. A notification means for performing a notification operation for notifying that, and a control means for controlling the notification operation of the notification means based on the temperature information acquired by the temperature sensor and / or the wind speed information acquired by the wind speed sensor; The image display device according to claim 1, further comprising:

Images