JP2019015803A - Display machine - Google Patents

Abstract

To provide a display machine capable of preventing high-temperature air from staying internally in both a longitudinally placed state and a laterally placed state.SOLUTION: A housing is arranged with: a first side face plate 10 on the downside and a third side face plate 30 on the upside, in a laterally placed state, in a vertical direction; and a second side face plate 20 on the downside and a fourth side face plate 40 on the upside, in a longitudinally place state, in the vertical direction. The first side face plate is provided with a first air-intake port 13 and an air-exhaust port 11 connected to a duct from an exhaust fan 71. The second side face plate is provided with second air-intake ports 21, 22. The first air-intake port is arranged near the exhaust fan. In the housing, a surface plate, a back plate 50, a third side face plate, and the fourth side face plate are formed with no air-intake port and no air-exhaust port.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a display device that includes a display unit that can display an image or an image on a surface plate, and that is particularly suitable for installation outdoors or indoor windows that are exposed to direct sunlight.

  The device described in Patent Document 1 has a configuration in which a display device is attached to a pole erected on a base, and is installed on a storefront or a road, for example. The display device is arranged on the front side thereof with a liquid crystal display unit on the upper side and an LED display unit on the lower side. An air inlet that communicates between the outside and the inside of the main body is formed at the bottom of the main body of the display device, and an air outlet that communicates between the outside and the inside of the main body is formed on the side surface. A cooling fan is disposed above the main body, and an exhaust duct connected to the exhaust port is connected to the cooling fan. By driving the cooling fan to rotate, outside air is sucked from the intake port, and the sucked air can be exhausted from the exhaust port to the outside through the cooling fan and the exhaust duct.

JP 2010-282109 A

  When the display device of Patent Document 1 is installed vertically, outside air is introduced from the bottom intake port and exhausted from the exhaust port located above the intake port, thereby releasing high-temperature air from the main body. It is easy to do. However, when this display device is installed horizontally, the exhaust port is located at the bottom and the intake port is located at the side, so that heat tends to stay in the main body. In particular, when the display device is installed outdoors, the temperature inside the main body becomes considerably high. For example, when a liquid crystal panel is used for the display device, there is a possibility that the blackening phenomenon of the liquid crystal may occur. .

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a display device that can prevent high-temperature air from staying inside both vertically and horizontally.

  In order to solve the above-described problems, the display device of the present invention is arranged in a housing having a front surface opening, a rectangular surface plate covering the opening, and can display an image or an image on the surface plate. A display unit, a speaker disposed in the housing, and an exhaust fan disposed in the housing, the housing having a rectangular back plate facing the front plate, and a back plate 4 side plates extending from the four sides to the four sides of the surface plate, respectively. The four side plates are substantially the same as the first side plate and the third side plate facing each other, and the first side plate and the third side plate. A horizontal state in which the first side plate and the third side plate are arranged so as to extend along the horizontal direction, the second side plate and the fourth side plate facing each other and extending in a direction perpendicular to each other. Vertically arranged side plates and third side plates so as to extend along the vertical direction. In the horizontal state, the first side plate is disposed on the lower side and the third side plate is disposed on the upper side in the vertical direction, and in the vertical direction, in the vertical direction, The second side plate is disposed on the lower side, the fourth side plate is disposed on the upper side, the first side plate is provided with a first intake port and an exhaust port connected to a duct from the exhaust fan, and the second side plate The face plate is provided with a second air inlet, and the first air inlet is disposed in the vicinity of the exhaust fan. In the housing, the front plate, the back plate, the third side plate, and the fourth side plate An intake port and an exhaust port are not formed.

  In the display device of the present invention, it is preferable that an axial fan having an axis arranged along the surface plate from the back plate is provided in the vicinity of the first air inlet.

  In the display device of the present invention, an air flow path is formed between the surface plate and the display unit, and at least a part of the air sucked from the second air inlet is led to the air flow path, and the outlet of the air flow path It is preferable that an exhaust fan is disposed in the vicinity.

  In the display device of the present invention, the four side plates are each covered with a plate-shaped frame body, and outside air can be sucked into the frame body covering the first side plate and the frame body covering the second side plate. It is preferable that each slit is provided.

  In the display device according to the present invention, the speakers are provided at two locations near the first side plate and near the third side plate, and the sound emitted by the speakers near the first side plate is transmitted through the first side plate. Sound emitted from the slit provided in the covering frame body and emitted by the speaker in the vicinity of the third side plate is converted into vibration in the space between the third side plate and the frame body covering the third side plate. It is preferable that the sound corresponding to is radiated from the frame body to the outside.

  The display device of the present invention includes a temperature sensor that detects the temperature of the display device and an illuminance sensor that detects the illuminance on the surface of the display device, and the operation of the exhaust fan is controlled based on the detection results of these sensors. Or the operation of the exhaust fan and the axial fan is preferably controlled. The exhaust fan and the axial fan are preferably controlled so as to be synchronized with each other.

  According to the present invention, it is easy to discharge high-temperature air to the outside in both the vertical and horizontal positions, so that the display unit can be prevented from being damaged due to the retention of the high-temperature air. . Furthermore, sufficient drip-proof property can be ensured in both the vertically placed state and the horizontally placed state.

(A), (b) is a perspective view which shows the structure of the display which concerns on embodiment of this invention from a different direction. (A) is a front view which shows the state which placed the display apparatus which concerns on embodiment vertically, (b) is a front view which shows the state put horizontally. It is a disassembled perspective view of the display which concerns on embodiment. FIG. 4 is an exploded perspective view of the display device according to the embodiment, as viewed from a direction different from FIG. 3. (A), (b) is a perspective view which shows the structure of the display apparatus of the state which removed the surface plate 160 and the frame bodies 210, 220, 230, 240 in embodiment from a different direction. (A), (b) is a perspective view which shows the display device of the state which removed the exterior and exposed the housing | casing from a different direction. It is sectional drawing along the A-A 'line of Fig.2 (a). It is an enlarged view of A1 part of FIG. It is an enlarged view of A2 part of FIG. FIG. 3 is a partially enlarged view of a cross-sectional view taken along line B-B ′ of FIG. It is a top view which shows the arrangement | positioning relationship between the 1st guide panel 121 in the embodiment, the 2nd guide panel 123, and the cover material 122. FIG. It is a perspective view which shows the structure of the 1st guide panel 121 and the 2nd guide panel 123 before coupling | bonding. It is a perspective view which shows the state which couple | bonded the 1st guide panel 121 and the 2nd guide panel 123 in embodiment. It is a functional block diagram of the display which concerns on embodiment.

  Hereinafter, a display device according to an embodiment of the present invention will be described in detail with reference to the drawings. FIGS. 1A and 1B are perspective views showing the configuration of the display device 100 according to the present embodiment from different directions. FIG. 2A is a front view showing a state in which the display device 100 is placed vertically, and FIG. 2B is a front view showing a state in which the display device 100 is placed horizontally. 3 and 4 are exploded perspective views of the display device 100 as seen from different directions. 5A and 5B are perspective views showing the configuration of the display device 100 in a state in which the surface plate 160 and the frame bodies 210, 220, 230, and 240 are removed from different directions. 6A and 6B are perspective views showing the display device 100 in a state where the exterior is removed and the housing 101 is exposed from different directions. 7 is a cross-sectional view taken along the line A-A 'of FIG. 2A, FIG. 8 is an enlarged view of the A1 portion of FIG. 7, and FIG. 9 is an enlarged view of the A2 portion of FIG. FIG. 10 is a partially enlarged view of a cross-sectional view taken along the line B-B ′ of FIG. FIG. 11 is a plan view showing an arrangement relationship between the first guide panel 121 and the second guide panel 123 and the cover material 122. FIG. 12 is a perspective view illustrating the configuration of the first guide panel 121 and the second guide panel 123 before being combined. FIG. 13 is a perspective view illustrating a state in which the first guide panel 121 and the second guide panel 123 are coupled to each other. FIG. 14 is a functional block diagram of the display device 100. In the following description, with respect to the display device 100, the direction corresponding to the vertical direction in FIG. 2A is the longitudinal direction or the vertical direction, the direction corresponding to the horizontal direction in FIG. A direction corresponding to the left-right direction may be referred to as a thickness direction. Also, the direction away from the casing 101 will be described as the outside.

  The display device 100 can be installed and used, for example, indoors or near a storefront, as well as outdoors or in stores that are exposed to direct sunlight, and is installed on the storefront or on the road. As shown in FIG. 2 (a), the display device 100 has a vertically long rectangular shape when viewed from the front, and includes a metal casing 101 having a generally flat surface shape, as shown in FIGS. Further, a flat surface plate 160 made of a transparent synthetic resin material and having a vertically long rectangular shape is attached so as to cover the front opening 102 of the housing 101.

  As shown in FIGS. 3 and 4, the housing 101 has a rectangular rear plate 50 facing the front plate 160 and four sides of the rectangular front plate 160 from the four sides of the rear plate 50. 4 side plates extending along the thickness direction toward the corresponding sides of the left side plate 10 (first side plate), bottom plate 20 (second side plate), right side plate 30 (third side plate), And the top plate 40 (4th side plate) is provided.

As shown in FIG. 6, an exhaust fan 71, an axial fan 73, two speakers 81 and 83, an LCD controller 91, and an LED controller 92 are provided inside the housing 101 and on the back plate 50. Has been placed.
The exhaust fan 71 is disposed in the vicinity of the top plate 40 at the upper part of the housing 101, and one end of the exhaust duct 72 is connected to the exhaust fan 71. The other end of the exhaust duct 72 is connected to an exhaust port 11 provided so as to penetrate the left side plate 10 in the thickness direction at the upper part of the left side plate 10. At the top of the housing 101, air warmed in the housing 101 is easily collected when the display device 100 is placed vertically. The exhaust fan 71 sucks in high-temperature air and passes through the exhaust duct 72. 101 is discharged to the outside.

  The axial fan 73 is disposed above the housing 101 and below the exhaust fan 71. The axial fan 73 is disposed in the vicinity of the intake port 13 (first intake port) provided below the exhaust port 11 in the upper part of the left side plate 10. As shown in FIG. 10, the axial fan 73 sends out the air sucked from the back plate 50 side to the front opening 102 side. A liquid crystal display unit 62 is disposed in front of the axial fan 73, and the air discharged from the axial fan 73 flows toward the back surface 62a of the liquid crystal display unit 62. Therefore, the back surface 62a and the surrounding air are circulated. Can be made.

  As shown in FIG. 6B, the two speakers 81 and 83 are disposed substantially symmetrically at both ends in the width direction of the housing 101, and the first speaker 81 is disposed in the vicinity of the left side plate 10, The two speakers 83 are disposed in the vicinity of the right side plate 30. A speaker duct 82 is connected to the first speaker 81, and the speaker duct 82 is connected to the radiation hole 12 provided so as to penetrate the left side plate 10 in the thickness direction. Thereby, the sound emitted from the first speaker 81 is radiated to the outside of the housing 101 through the speaker duct 82 and the radiation hole 12. As shown in FIG. 6A, a speaker duct 84 is connected to the second speaker 83, and the speaker duct 84 is attached so as to be in close contact with the right side plate 30. As shown in FIG. 3 and the like, a radiation hole 131 is provided at a position corresponding to the speaker duct 84 in the cover material 130 so as to penetrate in the thickness direction. As a result, the sound emitted from the second speaker 83 is converted into vibration by the right side plate 30 of the housing 101 through the speaker duct 84, and this vibration is transmitted to the cover member 130. The vibration of the cover member 130 and the vibration from the right side plate 30 passing through the radiation hole 131 are transmitted to the frame body 230, and sound corresponding to these vibrations is radiated from the frame body 230 to the outside. The radiating hole 12 is provided at substantially the same height as the air inlet 13 in the longitudinal direction of the housing 101, and the radiating hole 12 and the air inlet 13 are arranged so as to be aligned in the thickness direction of the housing 101. .

  As shown in FIGS. 5A and 5B, inside the housing 101, the front opening 102 side has a role of adjusting the air flow on the suction side of the cooling fan 71 in order from the top to the bottom. A shield plate 61, a liquid crystal display unit 62 (LCD), and an LED display unit 63 (LED) are arranged. The liquid crystal display unit 62 displays video and images according to control by the LCD controller 91. The LED display unit 63 is configured by, for example, a plurality of light emitting diodes (LEDs) arranged in a matrix, and displays a predetermined image by independently driving each light emitting diode according to control by the LED controller 92.

The liquid crystal display unit 62 and the LED display unit 63 as the display unit are fixed to the left side plate 10 and the right side plate 30 by attaching screws (not shown) at both ends in the width direction by screwing or the like. . The liquid crystal display unit 62 and the LED display unit 63 are arranged so that a gap S10 (FIGS. 7 and 8) is formed between the liquid crystal display unit 62 and the LED display unit 63 in the thickness direction of the housing 101 and the surface plate 160 attached to the front opening 102. Is done. The liquid crystal display unit 62 and the LED display unit 63 are connected to the LCD controller 91 and the LED controller 92, respectively (FIG. 14).
In addition, the structure of the liquid crystal display part 62 and the LED display part 63 as a display part is not limited to what is shown in each figure. For example, the arrangement and size of the liquid crystal display unit and the LED display unit may be changed, or one of them may be omitted. Moreover, you may use display parts other than a liquid crystal and LED, for example, an organic EL element.

  The shield plate 61 is fixed in advance to the back surface (surface on the inner side of the housing 101) of the front surface plate 160 via packing (not shown), and the housing is provided by attaching the front surface plate 160 to the housing 101. 101. As shown in FIG. 8, the shield plate 61 extends to the back plate 50 side so as to surround the liquid crystal display unit 62, and reaches the upper portion of the suction port 71 a of the exhaust fan 71. As a result, the warm air in the vicinity of the liquid crystal display unit 62 that has flowed out from the outlet at the top of the gap S10 toward the shield plate 61 side easily flows to the exhaust fan 71 side by the shield plate 61. It is possible to prevent stagnation of high-temperature air.

As shown in FIGS. 3 and 4, a first duct panel 111, a second duct panel 112, and a cover material 113, which are all made of metal, are installed outside the left side plate 10.
The first duct panel 111 is a plate extending along the longitudinal direction of the housing 101, and a through hole 111 a is provided at a position corresponding to the exhaust port 11 of the left side plate 10, and the frame-shaped peripheral portion 111 b is outside. Protruding. In the first duct panel 111, a bottomed recess 111c that is recessed toward the left side face plate 10 from the peripheral edge 111b is formed below the through-hole 111a (FIG. 5A).

The second duct panel 112 is a plate material extending along the longitudinal direction of the housing 101, and a through hole 112 a is provided at a position corresponding to the radiation hole 12 and the intake port 13 of the left side plate 10, and further, a frame-like shape is provided. The peripheral edge 112b protrudes outward. In the second duct panel 112, a bottomed recess 112c is formed below the through hole 112a and recessed toward the left side plate 10 with respect to the peripheral edge 112b (FIG. 5A).
The cover material 113 covers a range of the left side plate 10 that is not covered with the first duct panel 111 and the second duct panel 112.

  On the outside of the first duct panel 111, the second duct panel 112, and the cover material 113, a long frame-like metal frame body 210 is provided so as to cover them. The frame body 210 is formed with a first slit 211 and a second slit 212 that penetrate in the thickness direction. The first slit 211 is provided at a position corresponding to the recess 111 c of the first duct panel 111 in the longitudinal direction of the housing 101, and the second slit 212 is provided at a position corresponding to the recess 112 c of the second duct panel 112. It has been. That is, in the vertical direction, the first slit 211 is provided at a position shifted from the through hole 111a of the first duct panel 111, and the second slit 212 is provided at a position shifted from the through hole 112a of the second duct panel 112. ing.

  In such a configuration, the air exhausted through the exhaust duct 72 and the exhaust port 11 by the operation of the exhaust fan 71 passes from the through hole 111a of the first duct panel 111 to the outside through the first slit 211 through the recess 111c. Discharged. By shifting the positions of the through hole 111a and the first slit 211 up and down, water can be prevented from entering the housing 101 from the exhaust port 11 of the left side plate 10 while maintaining the exhaust performance. Therefore, as shown in FIG. 2A, desired drip-proofness can be ensured even when the left side plate 10 is placed vertically along the vertical direction. Note that, as shown in FIG. 2B, even when the frame body 210 is placed in the vertically lower side, the first slit 211 faces downward, so that sufficient drip-proof properties can be exhibited.

  The sound emitted from the first speaker 81 and radiated through the speaker duct 82 and the radiation hole 12 is radiated to the outside from the second slit 212 through the through hole 112a of the second duct panel 112. By shifting the positions of the through hole 112a and the second slit 212 up and down, it is possible to prevent water from entering the housing 101 from the radiation hole 12 of the left side plate 10 while maintaining sound radiation. Therefore, the desired drip-proof property can be ensured even in the vertical state as shown in FIG.

When the axial fan 73 is operated, a predetermined negative pressure state is established in the path from the air inlet 13 through the through hole 112a and the recess 112c to the second slit 212. Therefore, the casing 101 is either vertically or horizontally placed. Even in the state, outside air is sucked from the second slit 212. Here, by shifting the positions of the through hole 112a and the second slit 212 up and down (longitudinal direction of the casing 101), water can be supplied from the inlet 13 of the left side plate 10 into the casing 101 while maintaining the intake performance. Intrusion can be prevented. Therefore, as shown in FIG. 2A, desired drip-proofness can be ensured even when the left side plate 10 is placed vertically along the vertical direction.
In addition, in the horizontal state in which the frame body 210 is arranged on the lower side in the vertical direction as shown in FIG. 2B, the second slit 212 faces downward, so that sufficient drip-proof property can be exhibited.

  As shown in FIGS. 3 and 4, the bottom plate 20 is provided with two intake ports 21 and 22 (second intake ports) penetrating in the thickness direction. These are provided side by side along the width direction of the housing 101 so as to be the intake port 21 on the left side plate 10 side and the intake port 22 on the right side plate 30 side.

A first guide panel 121, a cover material 122, and a second guide panel 123 are provided outside the bottom plate 20.
The first guide panel 121 has a long plate shape extending along the width direction of the housing 101, and two vent holes 121 a and 121 b are provided at positions corresponding to the intake ports 21 and 22 when attached to the bottom plate 20. Has been placed. These vent holes 121a and 121b penetrate the first guide panel 121 in the thickness direction, respectively, and the planar shapes thereof are substantially the same as the intake ports 21 and 22, respectively. Further, as shown in FIG. 12, the outer edge portion of the first guide panel 121 has a coupling piece 121c from one end in the longitudinal direction and a pair of locking pieces 121d from the other end, respectively, on the second guide panel 123 side. It is provided so that it may extend. Further, a pair of tongue portions 121e protruding toward the second guide panel 123 are provided at both end portions in the width direction among the outer edge portions of the first guide panel 121.

  The cover material 122 is disposed so as to cover a range of the bottom surface of the bottom plate 20 that is not covered by the first guide panel 121. Here, as shown in FIG. 11, the cover member 122 is arranged so as to have a gap S <b> 20 between the first guide panel 121 and the outer edge portion of the second guide panel 123 in a plan view.

  The second guide panel 123 has a long plate shape and is disposed outside the first guide panel 121. As shown in FIG. 11, the main plane 123a of the second guide panel 123 has a quadrangular shape in plan view, and the first guide panel is formed by a wall 123b extending from the outer edge to the first guide panel 121 side (upper side). A space for accommodating 121 is formed inside. As shown in FIG. 12, the first guide panel 121 accommodated in this space has the locking piece 121d locked to the main plane 123a and the coupling piece 121c fixed to the main plane 123a by screwing or the like. Thus, the second guide panel 123 is coupled. A gap S21 is formed between the first guide panel 121 and the second guide panel 123 at the end portion on the side where the locking piece 121d is formed in the coupled state, and the first guide panel 121 is also formed. A pair of gaps S <b> 22 and S <b> 23 are formed between both end portions in the width direction and the wall portions 123 b at both ends in the width direction of the second guide panel 123. With the above configuration, the air introduced from the gaps S21, S22, and S23 passes through the air inlet 121 from the air hole 121a of the first guide panel 121 and passes through the air inlet 22 from the air hole 121b. Sucked into.

  As shown in FIGS. 3, 4, and 9, a long plate-like frame body 220 is fixed outside the cover member 122 and the second guide panel 123 so as to cover them. As shown in FIG. 9, the frame body 220 is disposed so as to be separated from the cover member 122 and the second guide panel 123 by a gap S <b> 24 in the vertical direction of the housing 101. The frame body 220 is provided with a slit 221 provided so as to penetrate in the thickness direction. The slit 221 is disposed in a range substantially corresponding to the second guide panel 123 and the first guide panel 121 in plan view.

  With such a configuration, the outside air sucked from the slit 221 of the frame body 220 is guided by the first guide from the gap S24 between the cover member 122 and the second guide panel 123 and the frame body 220 as shown by arrows in FIG. Through the gaps S20 between the panel 121 and the second guide panel 123 and the cover member 122, the gaps S21, S22, and S23 between the first guide panel 121 and the second guide panel 123 are passed, and finally, the air holes of the first guide panel 121 121 a and 121 b reach the inlets 21 and 22, respectively, and are sucked into the housing 101. In this configuration, since the second guide panel 123 is opposed to the slit 221 of the frame body 220, it does not directly face the vent holes 121 a and 121 b and the intake ports 21 and 22. Therefore, even if water enters from the slit 221, it can be prevented from entering the housing 101 through the second guide panel 123, the cover material 122, and the first guide panel 121. Therefore, as well as the vertically placed state shown in FIG. 2A, as well as the horizontally placed state in which the frame body 220 is arranged along the vertical direction as shown in FIG. can do.

  As shown in FIGS. 3 and 4, a long plate-like metal cover member 130 is installed outside the right side plate 30 so as to cover the right side plate 30, and further, a cover is provided outside the cover member 130. A long plate-like metal frame body 230 is provided so as to cover the material 130. With this configuration, the drip-proof property of the right side plate 30 is ensured. Therefore, even when the frame body 230 is placed in the vertical direction as shown in FIG. Water can be prevented from entering the inside. Further, since the cover member 130 is disposed so that a gap is formed between the cover member 130 and the right side plate 30, the sound radiated from the radiation hole 131 is conducted in the gap, thereby causing vibration of the cover member 130. The vibration is converted, and the vibration is transmitted to the outside of the frame body 230.

  As shown in FIGS. 3 and 4, a long plate-like metal cover material 140 is installed outside the top plate 40 so as to cover the top plate 40, and further, a cover is provided outside the cover material 140. A long plate-shaped metal frame 240 is provided so as to cover the material 140. With this configuration, since the drip-proof property of the top plate 40 is ensured, even when the frame body 240 is placed vertically as shown in FIG. Water can be prevented from entering the inside.

  As shown in FIGS. 1A and 1B, two support portions 240 a and 240 b are provided on the front end surface of the frame body 240. As shown in FIG. 8, these support portions 240 a and 240 b are formed in a U shape whose lower side is opened when viewed along the left-right direction of the display device 100, and the inside of these support portions 240 a and 240 b The upper end of the surface plate 160 is accommodated in the housing. In addition, two support portions 220a and 220b are formed on the front end surface of the frame body 220. The two support portions 220a and 220b are formed in a U-shape (see FIG. 9) whose upper side is opened when viewed along the horizontal direction of the display device 100. And the lower end part of the surface board 160 is accommodated inside these support parts 220a and 220b. Furthermore, like the frame bodies 220 and 240, the three support portions 210 a that form a U-shape that is open on the front end surface of the frame body 210 when viewed along the vertical direction of the display device 100. 210b and 210c are provided, and the left end portion of the surface plate 160 is accommodated inside the support portions 210a, 210b, and 210c. In addition, the front end surface of the frame body 230 is provided with three support portions 230a, 230b, and 230c that form a U-shape that is open inside when viewed along the vertical direction of the display device 100. The right end portion of the surface plate 160 is accommodated inside the support portions 230a, 230b, and 230c.

  A rectangular metal cover material 150 corresponding to the back plate 50 is fixed to the outside of the back plate 50 of the housing 101. The cover member 150 is not provided with an intake / exhaust port. With this configuration, the drip-proof property of the back plate 50 is ensured. Therefore, the case 101 is placed from the back plate 50 in either the vertical position as shown in FIG. 2A or the horizontal position as shown in FIG. It is possible to prevent water from entering the inside.

  As shown in FIG. 14, the display 100 further includes a control unit 90, an input device 93, a storage device (LCD) 94 related to the liquid crystal display unit 62, and a storage device (LED) 95 related to the LED display unit 63. Is provided. A part or all of these may be provided in the housing 101, or may be provided outside and exchange signals with a circuit or the like provided in the housing 101 wirelessly or by wire.

  The control unit 90 includes an LCD controller 91 and an LED controller 92. The control unit 90 causes the LCD controller 91 and the LED controller 92 to generate a control signal and a drive signal in accordance with a signal given from the input device 93.

  The LCD controller 91 outputs a control signal corresponding to the video or image to be displayed to the liquid crystal display unit 62, and the LED controller 92 outputs a control signal corresponding to the display content to the LED display unit 63. To do. The LCD controller 91 incorporating the sound controller 91a outputs a drive signal corresponding to the radiated sound to the two speakers 81 and 83. Here, the drive signals given to the first speaker 81 and the second speaker 83 may be the same or different. Since the first speaker 81 and the second speaker 83 have different sound emission forms to the outside of the display device 100, even if the same drive signal is given, there is a possibility that the sense of sound is lacking. For this reason, for example, audio data created so that the first speaker 81 and the second speaker 83 produce sounds with different contents, volume, timing, and the like are stored in the storage device (LCD) 94 and stored. It is possible to obtain the same sound by connecting the device (LCD) 94 to the LCD controller 91 incorporating the sound controller 91a and outputting the sound from the first speaker 81 and the second speaker 83 based on the audio data. It is also possible to exert an effect that is not possible, and it is possible to suppress the difference in sound radiation form by giving different drive signals. Further, the drive signal may be changed according to the orientation of the display device 100.

  A fan controller 92 b built in the LED controller 92 controls on / off of driving of the exhaust fan 71 and the axial fan 73. That is, the display device 100 is provided with a temperature sensor 96 and an illuminance sensor 97, and an operation of automatically driving or stopping the detection result of these sensors is compared with a threshold value stored in advance in the fan controller 92b. Do. If the exhaust fan 71 and the axial fan 73 are driven in synchronization with each other, the control can be simplified. On the other hand, the exhaust fan 71 and the axial fan 73 may be driven without being synchronized with each other. For example, when the temperature or illuminance is low, only the exhaust fan 71 may be driven. Further, when the exhaust fan 71 is continuously driven while the axial fan 73 is driven so as to be intermittently driven, the drive current can be reduced. Furthermore, if the driving conditions of the exhaust fan 71 and the axial fan 73 are changed based on the time change of the detection results of the temperature sensor 96 and the illuminance sensor 97, the desired cooling performance is secured under the optimum conditions while suppressing the driving current. can do.

An arbitrary number of the temperature sensors 96 can be provided at an arbitrary position in the display device 100. For example, a heat sensor such as the liquid crystal display unit 62, the LED display unit 63, the LCD controller 91, and the LED controller 92 can be used. It is good to provide in the vicinity in the member which emits. If a temperature sensor is also provided outside the display device 100, the temperature inside and outside the display device 100 can be detected.
The illuminance sensor 97 can be provided at an arbitrary position of the display device 100. For example, the illuminance sensor 97 is preferably provided on the surface plate 160 that is easily exposed to sunlight, that is, on the surface of the display device 100.
Alternatively, the illuminance sensor 97 may be omitted and the driving of the exhaust fan 71 and the axial fan 73 may be controlled based on the detection result of the temperature sensor 96.

  The drive operation of the exhaust fan 71 and the axial fan 73 is changed by connecting a storage device (LED) 95 storing threshold data to the LED controller 92 and using the input device 93 from the fan controller 92b to the storage device (LED ) 95 to give a control signal, thereby overwriting the corresponding data stored in the storage device (LED) 95. In addition, the threshold value is determined in advance in consideration of the driving time zone and the driving time interval, and the display device 100 with respect to the season, the weather, the installation environment, the operating temperature of the liquid crystal display unit 62 and the LED display unit 63, sunlight, etc. The driving conditions can be changed according to the direction and the like.

  When driving any one or two or more of the two speakers 81 and 83, the liquid crystal display unit 62, and the LED display unit 63, the LED controller 92 and the LCD controller 91 perform data related to the driving. The LED controller 92 reads from the built-in storage device 92a, and the LCD controller 91 reads the reproduction data from the storage device (LCD) 94. Based on this data, the corresponding one of the LCD controller 91 and the LED controller 92 controls the control signal. Is generated and output to the corresponding device. Upon receiving the control signal, the two speakers 81 and 83, the liquid crystal display unit 62, and the LED display unit 63 execute predetermined driving.

The input device 93 selects sound to be radiated from the two speakers 81 and 83, inputs and selects contents to be displayed on the liquid crystal display unit 62 and the LED display unit 63, as well as the orientation of the display device 100, that is, vertically or It can be used to specify the horizontal position.
Here, the setting or operation performed by the operator of the input device 93 includes at least one of the following (a) and (b).
(A) When the input device 93 is an infrared remote controller and this infrared remote controller is operated, an infrared signal corresponding to the operation is transmitted to the control unit 90.
(B) The input device 93 and the control unit 90 are connected by a wireless or wired LAN (Local Area Network), and a signal corresponding to the operation of the input device 93 is output to the control unit 90.

  In the display device 100, by driving the exhaust fan 71, outside air is sucked from the second slit 212 of the frame body 210 and the slit 221 of the frame body 220. At this time, as indicated by arrows in FIGS. 6A and 6B, the flow of air from the intake ports 21 and 22 of the bottom plate 20 to the exhaust fan 71 and the intake port 13 of the left side plate 10 to the exhaust fan 71. An air flow is generated. Further, the flow of air from the slit 221 of the frame body 220 to the exhaust fan 71 side is as shown by arrows in FIG. 7 between the back surface 63a of the LED display unit 63, the back surface 62a of the liquid crystal display unit 62, and the cover material 150. And the flow of the gap S10 (air flow path) between the front surface 63b of the LED display unit 63 and the front surface 62b of the liquid crystal display unit 62 and the surface plate 160. After leaving the gap S10, the air flowing through the gap S10 is guided to the exhaust fan 71 side by the shield plate 61 provided above the liquid crystal display unit 62, as shown in FIGS. Here, as shown in FIG. 7, if a guide plate 170 is provided between the frame body 220 and the LED display portion 63 to guide the air sucked from the slits 221 of the frame body 220 to the entrance of the gap S <b> 10, the gap S <b> 10 is entered. This is preferable because air can surely flow in.

  When the axial fan 73 is driven in addition to the exhaust fan 71, a flow of applying air to the back surface 62a of the liquid crystal display unit 62 is generated, and the temperature rise of the liquid crystal part is suppressed. There is an intake port 13 in the vicinity of the axial fan 73, and the intake fan 13 sucks in the outside air in order to return the negative pressure to the atmospheric pressure inside the casing. 73 and the low-temperature air induced in the gap S10 cools the liquid crystal display unit 62. Thereby, in particular, the flow of air when the display device 100 is in the horizontal orientation as shown in FIG. 2B can be made smooth to prevent hot air from staying.

  Here, when the display device 100 is placed vertically such that the exhaust fan 71 is positioned on the upper side as shown in FIGS. 2A and 6, high-temperature air tends to gather around the exhaust fan 71. Therefore, it is possible to reduce the staying amount by exhausting this. On the other hand, when the display device 100 is in the horizontal state, the position of the exhaust fan 71 in the display device 100 is not the uppermost position, and the third side plate 30 in which the range in which high-temperature air stays is located upward. On the other hand, around the speaker 81 where it is difficult to secure an air flow path, there is less movement of air and a tendency to stay. Therefore, it is difficult to exhaust hot hot air in the housing only by driving the exhaust fan 71. It has become. On the other hand, in the display device 100, since the air inlet 13 is provided in the left side plate 10 that is in the vicinity of the axial fan 73 and is positioned downward when in the horizontal state, outside air is introduced into the housing 101. Since the number of routes to be increased and the amount of circulating air in the housing 101 can be increased, high-temperature air can be easily exhausted, and the amount of residence can be reduced. Further, by driving the axial fan 73, as shown by an arrow in FIG. 10, it is possible to increase the amount of air toward the back surface 62a of the liquid crystal display unit 62, so that the efficiency of cooling the liquid crystal display unit 62 can be increased. In addition, it is possible to reduce the damage caused by the high temperature of the liquid crystal display unit 62, and further, it is possible to suppress the temperature increase in the housing 101 by suppressing the temperature increase of the liquid crystal display unit 62.

A modification will be described below.
In the above-described embodiment, in order to ensure the drip-proof property in the two directions shown in FIGS. 2 (a) and 2 (b), the frame bodies 230 and 240 arranged on the upper side are not provided with intake / exhaust ports. For example, in the case where it is assumed that the frame body 210 is placed on the upper side to be in the horizontal state instead of the state shown in FIG. 2B. The frame body 210 may be provided with an intake / exhaust port and a slit in the frame body 230 disposed on the lower side without providing the intake / exhaust port.

  In the above-described embodiment, the LCD controller 91 and the LED controller 92 are separated in the control unit 90 for convenience of explanation, but may be configured on a single substrate.

  It is also conceivable to automatically detect the installation direction of the display device 100 by attaching an appropriate sensor, and it is possible to prevent the operator from setting the input device.

In the above embodiment, the sound controller 91a is built in the LCD controller 91 and the fan controller 92b is built in the LED controller 92. However, the sound controller 91a is not built in the LCD controller 91 and is independent of the LCD controller 91. The fan controller 92b may be provided independently of the LED controller 92 without being incorporated in the LED controller 92.
Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

  As described above, the display device according to the present invention is useful in that it can easily reach a high temperature due to sunlight or the like and can continue a stable operation even in an environment where drip-proofing is required.

10 Left side plate (first side plate)
11 Exhaust port 12 Radiation hole 13 Intake port (first intake port)
20 Bottom plate (second side plate)
21, 22 Air intake (second air intake)
30 Right side plate (third side plate)
40 Top plate (4th side plate)
50 Back plate 61 Shield plate 62 Liquid crystal display unit 63 LED display unit 71 Exhaust fan 72 Exhaust duct 73 Axial fan 81, 83 Speaker 82, 84 Speaker duct 90 Control unit 91 LCD controller 91a Sound controller 92 LED controller 92a Built-in storage device 92b Fan controller 93 Input device 94 Storage device (LCD)
95 Storage device (LED)
96 Temperature sensor 97 Illuminance sensor 100 Display 101 Housing 102 Front opening 111 First duct panel 111a Through hole 111b Peripheral part 111c Concave part 112 Second duct panel 112a Through hole 112b Peripheral part 112c Concave part 113 Cover material 121 First guide panel 121a 121b Ventilation hole 121c Coupling piece 121d Locking piece 121e Tongue part 122 Cover member 123 Second guide panel 130, 140, 150 Cover member 131 Radiation hole 160 Surface plate 170 Guide plate 210, 220, 230, 240 Frame body 211, 212 , 221, 222 Slit S10, S20, S21, S22, S23, S24 Gap

Claims (8)

A housing with an open front,
A rectangular surface plate covering the opening;
A display unit arranged in the housing and capable of displaying a video or an image on the surface plate;
A speaker disposed in the housing;
A display device comprising an exhaust fan disposed in the housing,
The housing includes a rectangular back plate facing the front plate, and four side plates extending from the four sides of the back plate to the four sides of the front plate,
The four side plates extend in a direction substantially orthogonal to the first side plate and the third side plate facing each other, the second side plate and the second side plate facing each other. 4 side plates,
The horizontal position in which the first side plate and the third side plate are arranged so as to extend along the horizontal direction, and the first side plate and the third side plate are arranged so as to extend along the vertical direction, respectively. And have a vertically placed state,
In the horizontal state, in the vertical direction, the first side plate is disposed on the lower side, the third side plate is disposed on the upper side,
In the vertically placed state, in the vertical direction, the second side plate is disposed on the lower side, and the fourth side plate is disposed on the upper side,
The first side plate is provided with a first intake port and an exhaust port connected to a duct from the exhaust fan, and the second side plate is provided with a second intake port,
The first intake port is disposed in the vicinity of the exhaust fan;
In the casing, the front plate, the back plate, the third side plate, and the fourth side plate are not formed with an intake port and an exhaust port, respectively.   2. The display device according to claim 1, wherein an axial fan having an axis arranged along the surface plate from the back plate is provided in the vicinity of the first air inlet. An air flow path is formed between the surface plate and the display unit,
At least part of the air sucked from the second air inlet is led to the air flow path;
The display device according to claim 1, wherein the exhaust fan is disposed in the vicinity of an outlet of the air flow path. The four side plates are each covered with a plate-like frame body,
The display according to any one of claims 1 to 3, wherein the frame body covering the first side plate and the frame body covering the second side plate are provided with slits capable of sucking outside air. Machine.   The speakers are provided at two locations near the first side plate and near the third side plate, and the sound emitted by the speakers near the first side plate is a frame body that covers the first side plate. Sound radiated to the outside from the slit provided in the speaker and emitted by a speaker near the third side plate is converted into vibration in the space between the third side plate and the frame body covering the third side plate, and this vibration The display according to any one of claims 1 to 4, wherein sound corresponding to is emitted from the frame body to the outside.   The temperature sensor which detects the temperature of the said display machine, and the illumination intensity sensor which detects the illumination intensity on the surface of the said display machine are provided, The operation | movement of the said exhaust fan is controlled based on the detection result by these sensors. The display device according to claim 5.   A temperature sensor for detecting the temperature of the display device and an illuminance sensor for detecting the illuminance in the display device are provided, and operations of the exhaust fan and the axial fan are controlled based on detection results by these sensors. The display according to any one of claims 2 to 5.   The display device according to claim 7, wherein the exhaust fan and the axial fan are controlled to be synchronized with each other.