JP2013218185A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate cleaning of a display panel front surface in a display device installed outdoors.SOLUTION: A display device includes: a liquid crystal display panel 10; a front glass 26 disposed in front of the panel 10; a housing 20 for housing the panel 10; a front cover 22 for housing the front glass 26; and an air intake fan 31 for sending air to a space between the panel 10 and the glass 26. The front cover 22 is rotationally fixed to the housing 20. A semi-spherical groove-shaped receiving part 211 is provided at a front tip end of the upper face of a first frame 21 of the housing 20. A spherical protrusion 221 is provided at a back face side tip end of the upper side of the front cover 22. The protrusion 221 is fitted in the receiving part 211, and the front cover 22 rotationally turns, with the projection 221 used as a rotation shaft.

Description

  The present invention relates to a display device installed outdoors or the like.

  In a display device arranged outdoors, the temperature of the liquid crystal display panel increases due to an increase in temperature or irradiation with direct sunlight, which may cause malfunction. In order to cope with this, Patent Document 1 discloses a display device that uses a fan to blow air into a space between a liquid crystal display panel and a front glass.

JP 2011-128432 A

  However, in the display device described in Patent Document 1, dust is collected on the display surface of the liquid crystal display panel by blowing air with a fan. Therefore, it is necessary to periodically clean the display surface. Conventionally, the front glass is fixed to the escutcheon, and the escutcheon is screwed to the casing. Therefore, it is necessary to remove the screw in order to remove the escutcheon during cleaning, but it is necessary to lay down the display device when removing the screw in order to prevent the escutcheon from falling off. Met. Specifically, it is necessary to transport the display device to the workbench so that the display device can be laid down. In addition, in the case of an outdoor-compatible display device with waterproof / dustproof measures, the weight of the display device is large, so the transportation work itself However, it was complicated, requiring a plurality of workers.

  The present invention aims to solve the above problems.

  A display device according to the present invention includes a display panel, a transparent protective member disposed on the front surface of the display panel, a housing for housing the display panel, a housing member for housing the transparent protective member, a display panel, and a transparent protective member. A fan member that blows air is provided in the space between the housing members, and the housing member is rotatably fixed to the housing.

  Cleaning of the front surface of the display panel of the display device is facilitated.

3 is a front perspective view of the display device 1. FIG. FIG. 2 is a rear perspective view of the display device 1. It is the disassembled perspective view which looked at the display apparatus 1 from the back side. It is arrow sectional drawing fractured | ruptured by the plane containing the AA line shown in FIG. FIG. 3 is a rear perspective view of the display device 1 and shows a state in which an intake side lid and an exhaust side lid are opened. It is a front view of an intake side lid. It is a side view of an intake side lid. It is a bottom view of an intake side lid. It is a rear view of an intake side lid. It is arrow sectional drawing fractured | ruptured by the plane containing the BB line shown in FIG. It is a disassembled perspective view of an intake side dustproof filter. FIG. 3 is a rear view of the display device 1 when the display device 1 is used in a vertically placed state. FIG. 3 is a view when the display device 1 is viewed from the side when it is assumed that it is broken at a plane including the line BB shown in FIG. 2, and shows a state where a front cover 22 is opened. FIG. 14 is an enlarged view of FIG. 13. FIG. 3 is a view when the display device 1 is viewed from the side when it is assumed that it is broken at a plane including the line BB shown in FIG. 2, and shows a state where a front cover 22 is closed. FIG. 16 is an enlarged view of FIG. 15. It is the disassembled perspective view which looked at the display apparatus 1 from the front side. It is an enlarged view of FIG.

  Hereinafter, a display device according to an embodiment of the present invention will be specifically described with reference to the drawings.

  1 is a perspective view of a display device 1 according to an embodiment of the present invention as viewed from the front side, FIG. 2 is a perspective view as viewed from the back side, and FIG. 3 is an exploded view as viewed from the back side. 4 is a perspective view, and FIG. 4 is a cross-sectional view of the display device taken along the horizontal plane including line AA shown in FIG.

The display device 1 includes a liquid crystal display panel 10 (see FIGS. 3 and 4) that displays an image, and a housing 20 that houses the liquid crystal display panel 10 therein. The liquid crystal display panel 10 includes a polarizing filter, a color filter, a liquid crystal layer, an array substrate, a light guide plate, a light source, and the like. A circuit board 11 for controlling the liquid crystal layer is installed on the rear side of the liquid crystal display panel 10 (see FIGS. 3 and 4). In addition, instead of the liquid crystal display panel 10, a plasma display panel, an organic EL expense panel, etc.
Other display panels may be used.

  The casing 20 has a substantially rectangular thick plate-like outer shape, and has a substantially rectangular first frame 21 on which the liquid crystal display panel 10 is mounted, and a front surface (display surface) of the liquid crystal display panel 10. A front cover (escussion) 22 attached to the first frame 21 so as to cover the back surface, and a rear cover 23 attached to the first frame 21 so as to cover the back surface of the liquid crystal display panel 10. The front cover 22 includes a substantially frame-shaped second frame 24 that is fitted to the first frame 21 and fixed with screws. A band-like protruding edge 25 is formed inward at the front end of the second frame 24. A substantially rectangular front glass 26 is attached to the rear surface of the projecting edge 25 so as to close the opening of the second frame 24. The front glass 26 is provided to protect the liquid crystal display panel 10. The front cover 22 is fixed to the first frame 21 so as to be rotatable. That is, the front cover 22 is rotatable around a receiving portion 211 (see FIG. 1) having a hemispherical groove shape provided near the upper end of the first frame 21 as a rotation axis. Thereby, the front cover 22 can be opened and closed, and the front surface of the liquid crystal display panel 10 can be cleaned by opening the front cover 22. The details of this fixing structure will be described later with reference to FIGS.

  The rear cover 23 is a substantially rectangular plate material, and substantially rectangular openings 27a and 27b are formed at both ends of the short side (see FIG. 3). A protruding latching member 28 is attached. The opening member 28 of the embodiment is formed with four openings so as to face the rear cover 23. Each of these openings is, for example, on the outer wall of a column or a building (toward the horizontal direction). A locking portion provided on the projecting support member is inserted. Handles 29 used for carrying the display device 1 are provided at the four corners of the rear cover 23, respectively.

An air intake unit (intake unit) 30 that introduces outside air into the housing 20 and an exhaust unit (exhaust unit) 50 that exhausts the air inside the housing 20 to the outside of the display device 1 are attached to the rear cover 23. .
The intake section 30 is drawn into the three intake fans 31 a, b, and c (hereinafter simply referred to as the intake fan 31, refer to FIG. 3) that draws air into the housing 20. An intake side filter assembly 32 that removes air is provided, and a frame 33 to which the intake fan 31 and the intake side filter assembly 32 are attached. In the present embodiment, an axial fan is used as the intake fan 31. The three intake fans 31 are arranged in the frame 33 in one example along the longitudinal direction of the frame 33 or the short direction of the rear cover 23. The frame 33 has a peripheral wall closed in a square shape, and a collar 34 having a hole for screwing is formed in an annular shape on the peripheral wall. The air intake portion 30 is fixed to the rear cover 23 by inserting the end of the frame 33 into the (left side) opening 27 a of the rear cover 23 and screwing the flange 34 to the rear cover 23.

  The intake-side filter assembly 32 includes two intake-side dustproof filters 35a, b (hereinafter simply referred to as “intake-side dustproof filter 35”) having a substantially rectangular outer shape, and a support member 36 to which these filters 35 are attached. The support member 36 is an elongated, substantially rectangular plate, and the intake-side dustproof filter 35 is fixed to the support member 36 in a line along the longitudinal direction of the support member 36.

  FIG. 11 is an exploded perspective view of the intake-side dustproof filter 35. Each of the intake-side dustproof filters 35 includes a housing case 43 configured by combining two case halves 41 and 42. In the accommodation case 43, the mesh 44 and the filter material 45 having a dust collecting function are accommodated in an overlapped state. The mesh 44 is disposed on the outside air side, and the filter material 45 is disposed on the housing 20 side. Two rectangular openings 46 through which air sent to the mesh 44 and the filter material 45 pass are formed in the case half 41 on the mesh 44 side, and the mesh 44 and filter on the case half 42 on the filter material 45 side. Two rectangular openings 47 through which air dedusted by the material 45 passes are formed.

A recess 37 is formed on the outer surface of the wall portion of the frame 33 of the intake portion 30, and slots 38 a and b corresponding to each of the intake-side dustproof filters 35 are formed on the bottom surface of the recess 37 (
(See FIG. 3). From the side of the frame 33, the intake-side dustproof filter 35 is inserted into the slots 38 a and b, and the intake-side dustproof filter 35 is disposed in the frame 33. The support member 36 is screwed to the frame body 33 while being fitted in the recess 37, whereby the intake side filter assembly 32 is fixed to the frame body 33. In the present invention, the number of intake side dustproof filters 35 included in the intake side filter assembly 32 or the intake part 30 is not limited.

The configuration of the exhaust unit 50 is similar to the configuration of the intake unit 30, and three exhaust fans 51 a, b, and c (hereinafter simply referred to as exhaust units) for sending the air in the housing 20 to the outside of the display device 1. 3), an exhaust filter assembly 52 disposed on the discharge side of these three exhaust fans 51, and a frame to which the exhaust fan 51 and the exhaust filter assembly 52 are attached. And a body 53. The three exhaust fans 51 are arranged in the frame 53 in one example along the longitudinal direction of the frame 53 or the short direction of the rear cover 23. In this embodiment, an axial fan is used as the exhaust fan 51. The frame 53 has a peripheral wall closed in a square shape, and a flange 54 having a hole for screwing is formed in an annular shape on the peripheral wall. The exhaust part 50 is fixed to the rear cover 23 by inserting the end of the frame 53 into the (right side) opening 27 b of the rear cover 23 and screwing the flange 54 to the rear cover 23.

The exhaust-side filter assembly 52 has the same configuration as the intake-side filter assembly 32, and has two exhaust-side dustproof filters 55a and 55b (hereinafter simply referred to as the exhaust-side dustproof filter 55) having a substantially rectangular outer shape. And a support member 56 to which these filters 55 are attached (see also FIG. 5). The exhaust-side dustproof filter 55 is fixed to the support member 56 in a line along the longitudinal direction of the support member 56 that is an elongated, substantially rectangular plate.
A recess 57 is formed on the outer surface of the wall portion of the frame 53 of the exhaust portion 50, and two slots (not shown) are formed on the bottom surface of the recess 57. The exhaust side filter assembly 52 is attached to the frame 53 in the same manner as the intake side filter assembly 32. In the present invention, the number of the exhaust side dustproof filters 55 included in the exhaust side filter assembly 52 or the exhaust part 50 is not limited.

  When the intake fans 31a, 31b, 31c and the exhaust fan 51 are stopped, a situation in which air flows from the outside of the display device 1 into the housing 20 via the exhaust unit 50 may occur. In such a case, the exhaust-side dustproof filter 55 is provided to remove the dust that enters the housing 20. Since the dust removal performance higher than that of the intake-side dust-proof filter 35 is not required, the exhaust-side dust-proof filter 55 has the same configuration as the intake-side dust-proof filter 35 except that it does not have a filter material. Is preferred.

  As shown in FIGS. 3 and 4, an intake side guide member 13 and an exhaust side guide member 16 are attached to both ends of the first frame 21 on the short side so as to sandwich the liquid crystal display panel 10. The guide members 13 and 16 cooperate with the liquid crystal display panel 10 and the like to define the flow of air in the housing 20 from the intake portion 30 to the exhaust portion 50. The surface portions of the guide members 13 and 16 positioned on the rear side of the display device 1 are in contact with the end portions of the intake portion 30 and the exhaust portion 50 inserted into the rectangular openings 27 a and 27 b of the rear cover 23. Three air holes 14a, 14b, and 14c corresponding to the three intake fans 31a, 31b, and 31c are formed in the surface portion of the intake side guide member 13, respectively. Three vent holes 17a, b, c corresponding to the two exhaust fans 51a, b, c are opened. The air flow in the housing 20 will be described later.

  The frame 33 of the intake section 30 has an intake-side lid 60 that closes the rear opening 39 (of the frame 33) of the intake section 30 that communicates with the space in the housing 20, and includes three hinges 61 (FIG. 2 and FIG. 2). (See FIG. 12). The frame 53 of the exhaust 50 has an exhaust-side lid 80 that closes the rear opening 59 (of the frame 53) of the exhaust 50 that communicates with the space in the housing 20. 12).

  FIG. 5 is a perspective view of the display device 1 as viewed from the back side, and shows a state in which the intake side lid body 60 and the exhaust side lid body 80 are opened. Since the intake-side lid 60 and the intake-side lid 60 rotate and open toward the center of the display device 1, the operator can easily perform the intake-side lid 60 or the intake-side even when the display device 1 is installed. It is possible to check or clean the intake side dustproof filter 35 and the exhaust side dustproof filter 55 by changing the lid 60 from the closed state to the open state. As described above, the latching member 28 of the display device 1 is attached to the wall or the column through the support member that protrudes horizontally on the outer wall or column of the building. Between the display devices 1, the intake side lid body 60 and the intake side lid body 60 are opened, and a sufficient space that can be disposed substantially perpendicular to the rear cover 23 is secured.

  The frame 33 and the intake side lid 60 of the intake section 30 are provided with two lock mechanisms 111 that lock the intake side lid 60 in the closed state. As the lock mechanism 111, for example, an annular clasp provided on the intake side lid body 60 and a tongue piece provided on the frame body 33 of the intake portion 30 and to which the clasp is locked are used. It's okay. As shown in FIG. 2, the lock mechanism 111 is provided on the upper side and the lower side of the frame body 33 and the intake side lid body 60. Similar lock mechanisms 112 are provided on the upper side and the lower side of the exhaust side lid 80 and the frame 53 of the exhaust part 50.

6 to 9 are a front view, a side view, a bottom view, and a rear view of the intake-side lid 60, respectively. FIG. 10 is a cross-sectional view of the intake side cover 60 taken along the plane including the line BB shown in FIG. The intake side lid body 60 is formed in a hollow rectangular box shape, and a plurality of ventilation ports, that is, intake ports 63 are formed on the main surface portion 62 on the front side. Since foreign matters such as dust outside the display device 1 and water cannot enter the interior space of the intake side lid 60 once, they cannot reach the intake section 30 and further into the housing 20. Invasion of foreign substances and water intrusion into the body is suppressed. In the present embodiment, 20 intake ports 63 arranged in 5 rows and 4 columns are formed in the intake side lid 60. Each intake port 63 is a long hole formed in the main surface portion 62 of the intake side lid body 60 along the longitudinal direction thereof. Each intake port 63 has a foreign matter such as dust or water in the intake side lid body 60 and water. A hood 64 that suppresses the intrusion is provided. The hood 64 is formed on the main surface portion 62 so as to protrude outward so as to cover the intake port 63. The open end surface of the hood 64 is substantially perpendicular to the main surface portion 62.

  In FIG. 6, the hoods 64 of the five intake ports 63 in the second row from the left open to the right side, that is, the five intake ports 63 in the second row from the right side of the intake ports 63. ing. As a result, the hood 64 of the intake port 63 in the second row from the right adjacent to the intake port 63 becomes an obstacle to water and dust coming from the right side toward the intake port 63 in the second row from the left. Thus, foreign matter and water can be suppressed or prevented from entering the intake-side lid 60 from the intake port 63 in the second row from the left.

  The hoods 64 of the five intake ports 63 in the second row from the right are open to the left side and the five intake ports 63 in the second row from the left side. As a result, the hood 64 of the intake port 63 in the second row from the left adjacent to the intake port 63 becomes an obstacle to water and dust coming from the left side toward the intake port 63 in the second row from the right. As a result, the entry of foreign matter and water into the intake-side lid 60 from the intake port 63 in the second row from the right is suppressed or prevented.

  The five air inlets 63 in the first row from the left are provided on the opposite side of the five air inlets 63 in the second row from the right, and the five air inlets 63 in the second row from the left, The hoods 64 of the five intake ports 63 in the first row from the left are opened to the right side, that is, to the five intake ports 63 side in the second row from the right. As a result, the hood 64 of the intake port 63 in the second row from the left adjacent to the intake port 63 becomes an obstacle to water and dust coming from the right side toward the intake port 63 in the first row from the left. Thus, foreign matter and water can be suppressed or prevented from entering the intake-side lid 60 from the intake port 63 in the first row from the left.

  The five air inlets 63 in the first row from the right are provided on the opposite side of the five air inlets 63 in the second row from the left and the five air inlets 63 in the second row from the right, The hoods 64 of the five intake ports 63 in the first row from the right are open on the left side, that is, on the five intake ports 63 side in the second row from the left. As a result, the hood 64 of the intake port 63 in the second row from the right adjacent to the intake port 63 becomes an obstacle to water and dust coming from the left side toward the intake port 63 in the first row from the right. This prevents or prevents water and dust from entering the intake-side lid 60 from the intake port 63 in the first row from the right.

  In the present embodiment, for example, water (raindrops) scattered on the intake-side lid 60 in a direction slightly shifted from the direction perpendicular to the front main surface portion 62 of the intake-side lid 60 to the left or right It passes through 63 and enters the intake-side lid 60. However, since the intake port 63 and the hood 64 are configured as described above, the water scatters in this way so that the hood 64 functions for the right two rows of intake ports 63 or the left two rows of intake ports 63. It is interrupted by. The intake-side lid 60 is configured so that water that has entered the intake-side lid 60 does not reach the intake section 30, which will be described later.

As shown in FIG. 9, two substantially rectangular openings 66 a and b corresponding respectively to the intake-side dustproof filters 35 a and b are formed on the back-side main surface portion 65 of the intake-side lid 60 along the longitudinal direction of the main surface portion 65. The air that is formed in a line and flows from the intake port 63 is sent to the intake unit 30 through the openings 66. First seal members 67a and 67b surrounding each opening 66 are fixed to the back side main surface portion 65. The first seal members 67a and 67b are arranged in a square shape along the edges of the openings 66a and 66b, and are bonded to the back main surface portion 65 using, for example, an adhesive. For the first seal member 67, for example, a rubber packing is used.

  Each first seal member 67 corresponds to each of the intake side dust proof filter 35, and when the intake side cover 60 is in a closed state, the upper first seal member 67a is connected to the upper intake side dust proof filter 35a. The lower first seal member 67b is pressed against the edge of the storage case 43 of the lower intake side dustproof filter 35b. As a result, the space between the intake side lid 60 and the housing case 43 of each of the first seal members 67a and 67b is hermetically sealed, and the air introduced from the intake port 63 of the intake side lid 60 passes through the opening 66. Then, it is smoothly sent to the intake side dustproof filter 35. The first seal member 67 may be provided in the housing case 43 of the intake-side dustproof filter 35. The number of openings 66 and the number of first seal members 67 changes according to the number of intake side dustproof filters 35.

  As shown in FIGS. 4 and 5, a second seal member 101 having a square shape surrounding the opening 39 of the frame 33 is fixed to the rear end of the frame 33 of the intake portion 30. For example, rubber packing is used for the second seal member 101, and the second seal member 101 is bonded to the end portion of the frame 33 of the intake portion 30 using an adhesive. When the intake side lid 60 is in the closed state, the second seal member 101 is pressed against the back main surface portion 65 of the intake side lid 60 so as to surround the two first seal members 67. As a result, the intake portion 30 and the intake-side lid 60 are sealed in a water-tight manner, and the situation where water enters through the gap between the frame 33 of the intake portion 30 and the intake-side lid 60 is prevented or suppressed. . The second seal member 101 may be provided on the intake side lid body 60.

  In the front main surface portion 62 of the intake side lid body 60, the hood 64 that suppresses the intrusion of water into the intake side lid body 60 is provided in the intake port 63. However, as described above, for example, a display device When 1 is exposed to a storm, water may enter the intake-side lid 60 from the intake port 63. A baffle plate 70 is attached to the inner surface of the front-side main surface portion 62 of the intake-side lid 60, and water that has entered from the intake port 63 moves toward the opening 66 of the back-side main surface portion 65 of the intake-side lid 60. Prevent or suppress scattering. As shown in FIG. 9, the baffle plate 70 is configured to prevent the intake port 63 from being seen through the opening 66 when the opening 66 is viewed from the back main surface 65 side of the intake side lid 66. Are arranged along the longitudinal direction of the front main surface portion 62).

  As shown in FIG. 10, in this embodiment, a band plate bent so that a trapezoidal convex portion 71 is formed along the longitudinal direction is used as the baffle plate 70, and the top of the convex portion 71 is used. The surface is joined between the air inlets 63 in the second row from the left and the air inlets 63 in the second row from the right (the air inlets 63 in the center two rows). The water that has entered from the intake port 63 hits the baffle plate 70 or hits the inner wall of the intake-side lid body 60 after hitting the baffle plate 70 and falls to the bottom surface of the intake-side lid body 60 by the action of gravity. The water that has entered from the first row of intake ports 63 from the left and the first row of intake ports 63 from the right hits the inner wall of the intake side lid body 60 and falls to the bottom surface of the intake side lid body 60 by the action of gravity.

An opening serving as the first drain outlet 72, more specifically, a long hole is formed in the bottom surface portion of the intake side lid 60 along the short side direction of the intake side lid 60, and the intake side lid The water that has fallen on the bottom surface of 60 is discharged (flowed down) to the outside from the first drain port 72 disposed downward. The first drain port 72 is provided with a hood 73 that projects downward from the bottom surface of the intake-side lid 60. The hood 73 is formed so as to cover the first drain port 72 and is open to the intake portion 30 or the rear cover 23 side. The first drain port 72 also functions as an intake port. The open end surface of the hood 73 is substantially perpendicular to the bottom surface of the intake side lid body 60.
As the baffle plate 70, a belt-like flat plate supported by an appropriate support member and arranged in parallel to the back main surface portion 65 may be used.

  A hinge 61 is attached to a side surface portion of the intake side lid body 60 located on the center side of the display device 1 (see FIG. 2), and is opposed to the side surface portion. In the other side surface portion adjacent to, five openings serving as the second drainage port 74 are formed, and more specifically, five long holes are formed. These second drain ports 74 are arranged in a line along the longitudinal direction of the side surface portion, and each second drain port 74 has a hood that projects laterally from the side surface portion of the intake side lid body 60. 75 is provided. Each hood 75 is formed so as to cover the second drain port 74 and is open to the intake portion 30 or the rear cover 23 side. The open end surface of the hood 75 is substantially perpendicular to the side surface of the intake side lid body 60. The second drain port 74 also functions as an intake port. The function of the second drain port 74 will be described later.

  As shown in FIG. 2 and the like, the exhaust side lid 80 has a configuration similar to the intake side lid 60. Similar to the intake-side lid 60, the exhaust-side lid 80 is formed in a hollow rectangular box shape. Since foreign matter such as dust outside the display device 1 and water cannot enter the interior of the exhaust-side lid 80 and cannot reach the exhaust unit 50 and further into the housing 20, Intrusion of foreign matter and water intrusion into the housing is suppressed. Twenty vents arranged in 5 rows and 4 columns, that is, exhaust ports 83 are formed in the exhaust side lid 80 on the front side main surface portion 82 of the exhaust side lid 80. Each exhaust port 83 is a long hole. Each exhaust port 83 is provided with a hood 84 so as to cover the exhaust port 83 and protrude rearward from the main surface portion 82. The open end surface of the hood 84 is substantially perpendicular to the main surface portion 82. In FIG. 2, the hoods 84 of the left two rows of exhaust ports 83 are opened to the right side, and the hoods 84 of the right two rows of exhaust ports 83 are opened to the left side. Since the exhaust port 83 and the hood 84 are configured in this way, in the exhaust side lid 80 as well as in the intake side lid 60, entry of foreign matter or water into the exhaust side lid 80 is suppressed or prevented. Has been.

  As shown in FIG. 5, two substantially rectangular openings 86 a and b are formed in a line along the longitudinal direction of the back side main surface portion 85 in the back side main surface portion 85 of the exhaust side lid body 80. In the closed state of the body 80, the air sent from the exhaust unit 50 is sent to the exhaust port 83 through each opening 86. The back side main surface portion 85 is fixed with the third seal members 87a, 87b surrounding the openings 86a, b. The third seal member 87 is arranged in a square shape along the edge of the opening 86, and is bonded to the main surface portion 85 using, for example, an adhesive. For the third seal member 87, for example, rubber packing is used.

  Each third seal member 87 corresponds to each of the exhaust side dust proof filter 55, and when the exhaust side cover 80 is in a closed state, the upper third seal member 87a is connected to the upper exhaust side dust proof filter 55a. The lower third seal member 87b is pressed against the edge of the housing case of the lower exhaust side dustproof filter 55b. As a result, the housing case for the exhaust-side lid 80 and the exhaust-side dust-proof filter 55 is hermetically sealed, so that the air that has passed through the exhaust-side dust-proof filter 55 passes smoothly through the opening 86 of the exhaust-side lid 80. 83. The third seal portion 87 may be provided on the back side main surface portion 85 of the exhaust side lid body 80. Note that the number of the openings 86 and the third seal members 87 varies depending on the number of the exhaust side dustproof filters 55.

  A square-shaped fourth seal member 102 surrounding the rear opening of the frame 53 is fixed to the rear end of the frame 53 of the exhaust part 50. For example, rubber packing is used for the fourth seal member 102, and the fourth seal member 102 is bonded to the end of the frame 53 of the exhaust unit 50 using an adhesive. When the exhaust side lid 80 is in a closed state, the fourth seal member 102 is pressed against the back main surface portion 85 of the exhaust side lid 80 so as to surround the two third seal members 87a and 87b. As a result, the exhaust part 50 and the exhaust side lid 80 are sealed in a watertight manner, and water enters the housing 20 through the gap between the frame 53 of the exhaust part 50 and the exhaust side lid 80. Is prevented. The fourth seal member 102 may be provided on the exhaust side lid body 80.

  A baffle plate 90 is attached to the inner surface of the front main surface portion 82 of the exhaust side lid 80, and water entering from the exhaust port 83 moves toward the opening 86 of the back side main surface portion 85 of the exhaust side lid 80. Or prevent or suppress the scattering. The baffle plate 90 is arranged along the longitudinal direction of the exhaust-side lid 80 so that the intake port 83 cannot be seen from the opening 86 when the opening 86 is viewed from the back main surface 85 side.

  As shown in FIG. 4, a baffle plate 90 similar to that of the intake-side lid 60 is also used for the exhaust-side lid 80, and the top surface of the convex portion is the exhaust port in the second row from the left. 83 and the exhaust port 83 in the second row from the right. The water that has entered from the exhaust port 83 falls to the bottom surface of the exhaust side lid 80 as in the case of the intake side lid 60. In the bottom surface of the exhaust side lid body 80, an opening that is the third drainage port 92, more specifically, a long hole is opened, and water that has fallen on the bottom surface portion of the exhaust side lid body 80 is disposed downward. The discharged third drain port 92 is discharged to the outside. The third drain port 92 is provided with a hood 93 that protrudes from the bottom surface to the lower side of the exhaust-side lid 80. The hood 93 is formed so as to cover the third drainage port 92 and is open to the exhaust portion 50 or the rear cover 23 side. The open end surface of the hood 93 is substantially perpendicular to the bottom surface of the exhaust side lid 80. The third drainage port 92 also functions as an exhaust port.

  A hinge 61 is attached to the side surface portion of the exhaust-side lid 80 located on the center side of the display device 1, and more specifically, four openings serving as the fourth drainage ports 94 are formed with long holes. . These fourth drain ports 94 are arranged in a line along the longitudinal direction of the side surface portion, and each fourth drain port 94 has a hood protruding laterally from the side surface portion of the intake side lid body 60. 95 is provided. Each hood 95 is formed so as to cover the fourth drainage port 94 and is open to the exhaust portion 50 or the rear cover 23 side. The open end surface of the hood 95 is substantially perpendicular to the side surface of the exhaust side lid 80. The fourth drainage port 94 also functions as an exhaust port.

  The display device 1 according to the present embodiment is used in a horizontally placed state in which the longitudinal direction of the display device 1 is horizontal as shown in FIG. 2, and the longitudinal direction of the display device 1 is vertical as shown in FIG. 12. It can also be used in a vertical orientation as a direction. In the vertically placed state, the display device 1 is arranged such that the air used for cooling the liquid crystal display panel 10 is efficiently discharged and the air intake unit 30 is located below and the air exhaust unit 50 is located above. The In the vertically placed state, the water that has entered the intake-side lid 60 falls to the inner surface of the side surface where the second drainage port 74 is opened, and is discharged to the outside from the second drainage port 74 that is disposed downward. In addition, when the display device 1 is placed vertically, the water that has entered the exhaust-side lid 80 falls to the inner surface of the side surface where the fourth drain port 94 disposed downward is opened, and from the fourth drain port 94. It is discharged outside.

  In the display device 1 of the present embodiment, when viewed from the back side of the display device 1 in the horizontal state, the second drainage port 74 is formed in the left direction, that is, on the left side surface portion of the intake side lid body 60. The four drain ports 74 are also formed in the left direction, that is, on the left side surface portion of the exhaust side lid 80. When the intake portion 30 is disposed at the right end portion of the display device 1 and the exhaust portion 50 is disposed at the left end portion as viewed from the back side of the display device 1, the air intake portion 30 is horizontally placed from the back side of the display device 1. As seen, the second drain port 74 is formed rightward, that is, on the right side surface portion of the intake side lid body 60, and the fourth drain port 74 is also formed rightward, that is, on the right side surface portion of the exhaust side lid body 80. Thus, when the display device 1 is placed vertically so that the air intake unit 30 is located below and the air exhaust unit 50 is located above, water is discharged from the second drain port 74 and the fourth drain port 74.

Since the hood 73 of the first drainage port 72 and the hood 75 of the second drainage port 74 are open to the intake portion 30 or the rear cover 23 side, the second drainage port 74 is placed in the vertical position in the horizontal position. The entry of foreign matter and water into the intake-side lid body 60 from the first drain port 72 is suppressed. In addition, since the hood 93 of the third drainage port 92 and the hood 95 of the fourth drainage port 94 are open to the exhaust part 50 or the rear cover 23 side, the vertically placed state from the fourth drainage port 94 in the horizontal state. The entry of foreign matter and water into the exhaust-side lid 80 from the third drain port 92 is suppressed.

  In FIG. 4, the flow of air in the display device 1 when the intake fan 31 of the intake unit 30 and the exhaust fan 51 of the exhaust unit 50 are driven is indicated by arrows. The air flowing in from the intake port 63, the first drain port 72, and the second drain port 74 of the intake side lid body 60 is sent to the intake side dustproof filter 35 from the opening 66 through the internal space of the intake side lid body 60. . The air removed by the intake side dustproof filter 35 is sucked into the intake fan 31 and sent to the space inside the intake side guide member 13. The front glass 26 of the front cover 22 is disposed so as to be separated from the front surface of the display panel 10, and the air sent into the intake side guide member 13 is the back side or end face of the intake side guide member 13 and the liquid crystal display panel 10. And is sent to the space between the front glass 26 and the front surface of the display panel 10. The air sent to the space moves from one end of the liquid crystal display panel 10 to the other end, absorbs heat from the front surface of the liquid crystal display panel 10, and reaches the exhaust side guide member 16. The air that has entered the exhaust side guide member 16 is sucked into the exhaust fan 51. The air discharged from the exhaust fan 51 passes through the exhaust side dustproof filter 55 and is sent into the exhaust side lid 80 from the opening 86 of the exhaust side lid 80. The air sent to the exhaust side lid 80 is exhausted to the outside of the display device 1 from the exhaust port 83, the third drainage port 92, and the fourth drainage port 94 of the exhaust side lid 80.

  A plurality of holes 15 arranged along the short direction of the display member are formed on the wall surface of the intake side guide member 13 that is disposed perpendicular to the back surface of the liquid crystal display panel 10. In addition, a plurality of holes 18 arranged along the short direction of the display device 1 are also formed on the wall surface of the exhaust-side guide member 16 that is arranged perpendicular to the back surface of the liquid crystal display panel 10. Therefore, a part of the air sucked by the intake fan 31 and sent to the space in the intake side guide member 13 passes through the plurality of holes 15 of the intake side guide member 13 to the back surface of the liquid crystal display panel 10. And flows to the exhaust side guide member 16 to absorb heat from the back surface of the liquid crystal display panel 10. Then, it is sent into the exhaust side guide member 16 through the plurality of holes 18 of the exhaust side guide member 16 and discharged to the outside of the display device 1 as described above.

  As described above, in the display device 1 according to the present embodiment, the housing 20 is configured by combining the first frame 21, the front cover 22, and the rear cover 23, and the second frame of the front cover 22. A front glass 26 is attached to 24, and an intake portion 30 and an exhaust portion 50 are attached to the rear cover 23. The intake side filter assembly 32 is slidably attached to the intake part 30 and the exhaust side filter assembly 52 is slidably attached to the exhaust part 50. These constituent elements of the display device 1 are combined by using a waterproof and dustproof structure that prevents water or dust entering from the gap from reaching the liquid crystal display panel 10.

  Incidentally, when the applicant of the present invention prototyped the display device 1 of the present embodiment, it was confirmed that the IP 53 was satisfied not only in the horizontal position but also in the vertical position. The first digit after the IP is for the entry of foreign solids. In the case of “5”, it means that the standard that the predetermined operation and safety of the display device 1 do not enter the housing 20 is satisfied. The second digit of the number is for liquid entry. In the case of “3”, it means that the standard “not adversely affected by water of spray water within 60 degrees from vertical” is satisfied.

The number and shape of the intake port 63, the exhaust port 83, the first drain port 72, the second drain port 74, the third drain port 92, and the fourth drain port 94 are not limited. For example, the first drain port 72 and the third drain port 94 A plurality of drain ports 92 may be formed. Further, in the above-described embodiment, the right or left first row air inlets 63 may not be provided. Furthermore, in the above embodiment, one or more rows of additional intake ports 63 in which the hoods 64 are similarly opened may be provided outside the right or left first row of intake ports 63. The same applies to the exhaust port 83. From the point of covering the hood and increasing the water discharge performance while maintaining the intake and exhaust performances, a plurality of long hole intake ports 63 and exhaust ports 83 are provided along the long side of the long hole as in the above embodiment. Therefore, it is considered preferable that the hood is opened.

  If the display device 1 is not installed vertically, the second drain port 74 and the fourth drain port 94 may not be provided. In this case, the intake side cover 60 and the exhaust side cover 80 are placed in the closed state perpendicularly to the rear cover 23 by making appropriate modifications to the above embodiment, and face the wall or the rear cover 23. It is also possible to adopt a configuration that rotates and opens.

  The front cover 22 of the display device 1 is fixed to the first frame 21 and can be opened and closed with the vicinity of the upper side of the first frame 21 as a fulcrum. Details of this fixing structure will be described with reference to FIGS.

  FIG. 13 is a view of the display device 1 when viewed from the side when it is assumed that it is broken at a plane including the line BB shown in FIG. 2, and shows a state in which the front cover 22 is opened. . FIG. 14 is an enlarged view of a joint portion between the front cover 22 and the first frame 21 in FIG. 13. As shown in these drawings, a front glass 26 is accommodated in the front cover 22, and the liquid crystal display panel 10 is accommodated in the first frame 21. A hemispherical groove-shaped receiving portion 211 is provided at the front front end portion of the upper surface of the first frame 21. On the other hand, a spherical protrusion 221 is provided at the rear-side front end portion on the upper side of the front cover 22. The protruding portion 221 is fitted into the receiving portion 211, and the front cover 22 rotates around the protruding portion 221 as a rotation axis. Thereby, the front cover 22 can be opened and closed, and the front surface of the liquid crystal display panel 10 can be cleaned by opening the front cover 22.

  The structure for fixing the front glass 26 will be described with reference to FIG. The front glass 26 is sandwiched between a front cover protrusion 25 provided on the front side of the front glass 26 and a glass holder 224 provided on the rear side of the front glass 26 via gaskets 223a to 223c. 22 is fixed. In FIG. 14, the second frame 24 is drawn as if it sandwiched the front glass 26. However, the second frame 24 shown in FIG. Thus, the second frame 24 does not sandwich the front glass 26. In addition, the square cavities 222a and 222b are for communicating L-shaped connection fittings for connecting the second frames 24 to each other. That is, the second frame 24 is actually divided into four parts at the top, right, bottom, and left of the liquid crystal panel 10, and each separated second frame 24 is joined by the connecting metal fitting. It has become.

  FIG. 15 is a view of the display device 1 as viewed from the side when it is assumed that it is broken at a plane including the line BB shown in FIG. 2, and shows a state in which the front cover 22 is closed. is there. FIG. 16 is an enlarged view of a joint portion between the front cover 22 and the first frame 21 in FIG. 15. When the front cover 22 is closed, the glass holder 224 contacts the first surface 251a on the front side of the metal fitting 251 provided on the upper surface of the liquid crystal display panel 10. Thereby, a semi-sealed space 202 (see also FIG. 4) is formed between the front glass 26 and the liquid crystal display panel 10. In this space, the air blown by the intake fans 31a to 31c flows, whereby the front side of the liquid crystal display panel 10 is cooled. Further, the second surface 251 b of the metal fitting 251 forms the upper surface of the space 202. The third surface 251 c of the metal fitting 251 is in contact with the front surface of the liquid crystal display panel 10 and supports the front surface side of the liquid crystal display panel 10. The fourth surface 251 d of the metal fitting 251 is in contact with the upper surface of the liquid crystal display panel 10. The fourth surface 251 d is provided with a through-hole for penetrating the screw 252, and the metal fitting 251 is fixed to the upper surface of the liquid crystal display panel 10 by being screwed with the screw 252.

Further, a protrusion 225 is provided on the upper back surface portion of the front cover 22, and a gasket is fitted into the space 226 above the protrusion 225. The space 226 is actually formed so as to go around the periphery of the liquid crystal display panel 10, and the gasket is provided so as to surround the liquid crystal display panel 10. Thereby, it is possible to prevent water from entering the liquid crystal display panel 10.

  Similar to the second frame 24, the first frame 21 is actually separated into four parts at the top, right, bottom and left of the liquid crystal display panel 10, and each separated first frame 21 is L-shaped. It is joined by a mold fitting. The hollow part 212 is for inserting this connecting metal fitting.

  FIG. 17 is an exploded perspective view of the display device 1 as viewed from the front side. FIG. 18 is an enlarged view of FIG. 17, in particular, an enlarged side portion of the front cover 22. The air flow generated by the intake fan 31 flows into the space 202 through the opening 201 a provided on the front side of the liquid crystal display panel 10. In FIG. 16, a frame-like member above the space 202 indicates this opening 201a.

In the above embodiment, the intake side 30 is provided with the intake side lid 60 and the exhaust part 50 is provided with the exhaust side lid 80. However, if the installation status of the display device 1 permits (for example, the intake part 30 or when there is a roof on the exhaust 50), the intake-side lid 60 or the exhaust-side lid 80 may be removed. In the above embodiment, the intake side and the exhaust side of the display device 1 can be understood from the fact that the intake side and the exhaust side are basically provided with the same configuration to provide foreign matter intrusion prevention and waterproof functions. Note that each can be applied independently.

  The display device according to the above-described embodiment is installed outdoors, for example, for displaying video and various information, and is installed outdoors for the purpose of showing pedestrians video for advertisement. Such a display device is detachably attached to, for example, a support column standing on the ground or an outer wall of a building, but may be installed outdoors in combination with other devices such as a vending machine.

  The above description is provided to illustrate the present invention and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

DESCRIPTION OF SYMBOLS 10 Display panel 20 Case 30 Intake part 31a, b, c Intake fan 35a Intake side dustproof filter 35b Intake side dustproof filter 39 Opening 50 Exhaust part 51 Exhaust fan 55a Exhaust side dustproof filter 55b Exhaust side dustproof filter 59 Opening 60 Intake Side cover 63 Intake port 64 Hood 66a, b Opening 67a, b First seal member 70 Baffle plate 72 First drain port 74 Second drain port 80 Exhaust side cover 83 Exhaust port 84 Hood 86a, b Opening 87a, b First 3 seal member 90 baffle plate 92 first drain port 94 second drain port 101 second seal member 102 fourth seal member

Claims (1)

A display panel;
A transparent protective member disposed in front of the display panel;
A housing for housing the display panel;
A housing member for housing the transparent protective member;
Provided with a fan member that blows air in the space between the display panel and the transparent protective member,
A display device in which a housing member is fixed to be rotatable with respect to a housing.