WO2012029683A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2012029683A1
WO2012029683A1 PCT/JP2011/069380 JP2011069380W WO2012029683A1 WO 2012029683 A1 WO2012029683 A1 WO 2012029683A1 JP 2011069380 W JP2011069380 W JP 2011069380W WO 2012029683 A1 WO2012029683 A1 WO 2012029683A1
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WO
WIPO (PCT)
Prior art keywords
flow path
housing
display panel
display device
ventilation
Prior art date
Application number
PCT/JP2011/069380
Other languages
English (en)
Japanese (ja)
Inventor
雅哉 中道
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2010192574A external-priority patent/JP5598915B2/ja
Priority claimed from JP2010192575A external-priority patent/JP2012048145A/ja
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2012029683A1 publication Critical patent/WO2012029683A1/fr
Priority to US13/780,433 priority Critical patent/US20130171921A1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
    • H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F9/00—Details other than those peculiar to special kinds or types of apparatus
    • G07F9/02—Devices for alarm or indication, e.g. when empty; Advertising arrangements in coin-freed apparatus
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20181—Filters; Louvers

Definitions

  • the present invention relates to a display device including a display panel.
  • the display device includes a housing that accommodates the display panel, and the housing is provided with an image display window that allows the screen of the display panel to be visually recognized from the outside (see, for example, Patent Document 1).
  • Patent Document 1 Conventionally, most display devices are designed on the assumption that they are installed indoors, and it has not been assumed that the screen of the display panel is heated by sunlight incident from the image display window.
  • a display device is permanently installed outdoors, or that the display device is mounted in another device such as a vending machine installed outdoors.
  • the conventional display device is permanently installed outdoors, or when the conventional display device is directly installed in another device such as a vending machine, the temperature of the screen of the display panel is excessively increased by sunlight. This may cause an abnormality in the operation of the display panel.
  • the housing has an intake portion for sucking air from the outside to the inside of the housing, and an exhaust for exhausting air from the inside of the housing to the outside.
  • a configuration is considered in which a flow path leading from the intake portion to the exhaust portion is formed inside the housing.
  • the housing is provided with a fan for flowing the air in the flow path from the intake section to the exhaust section, and the intake section is a filter that captures dust in the air sucked from the intake section. Is provided.
  • the housing in order to cool the display panel in the display device, includes an intake portion for sucking air from the outside to the inside of the housing, and an exhaust for discharging air from the inside of the housing to the outside.
  • a configuration is considered in which a flow path leading from the intake portion to the exhaust portion is formed inside the housing.
  • a plurality of fans that flow the air in the flow path from the intake section toward the exhaust section are provided in the intake section so as to be separated from each other.
  • a filter is provided for trapping dust.
  • This display device has a configuration in which air sent from a plurality of fans passes through the same space in the flow path. For this reason, air sent out from the fan collides with each other to generate turbulent flow and vortices. As a result, the turbulent flow and vortices hinder efficient cooling of the display panel.
  • a display device includes: A display panel; A housing for housing the display panel; A ventilation portion disposed in the casing and communicating with the outside and the inside of the casing, the ventilation end having a posture in which the opening end portion is directed to the side, and an insertion window is opened on the back; A fan for guiding air to the inside or outside of the housing through the ventilation portion; A filter that is inserted from the insertion window and is detachably installed in the ventilation portion;
  • the display device includes: A display panel; A housing for housing the display panel; A ventilation portion arranged in the housing and communicating the outside and the inside of the housing with each other; A plurality of fans disposed in the ventilation portion; A flow path formed inside the housing and extending from the ventilation part to reach the surface of the display panel; A partition member that is provided in the flow path and partitions the flow path into a plurality of spaces that communicate from the ventilation portion to the surface of the display panel; Have The fan is arranged so that one space in the flow path corresponds.
  • FIG. 1 is a perspective view of a display device according to an embodiment of the present invention as viewed from the front side.
  • FIG. 2 is a perspective view of the display device as seen from the back side.
  • FIG. 3 is a rear view of the display device.
  • FIG. 4 is an exploded perspective view of the display device as viewed from the front side.
  • FIG. 5 is an exploded perspective view of the display device as viewed from the back side.
  • 6 is a cross-sectional view taken along the line AA shown in FIG.
  • FIG. 7 is an enlarged view of region B shown in FIG.
  • FIG. 8 is an enlarged view of a region C shown in FIG.
  • FIG. 9 is a cross-sectional view taken along the line DD shown in FIG.
  • FIG. 10 is an enlarged view of region E shown in FIG. FIG.
  • FIG. 11 is an enlarged view of an F region shown in FIG.
  • FIG. 12 is a perspective view showing a second flow path forming member provided in the display device.
  • FIG. 13 is an enlarged view of the second flow path forming member.
  • FIG. 14 is a perspective view of the display device as seen from the bottom side.
  • FIG. 15 is an exploded perspective view of the display device viewed from the bottom side.
  • FIG. 16 is a perspective view of the front-side case half constituting the housing as viewed from above the rear side.
  • FIG. 17 is a perspective view of the front case half as viewed from the lower rear side.
  • FIG. 18 is an enlarged view of a cover member provided in the display device.
  • FIG. 19 is a cross-sectional view showing a modification of the drainage structure of the display device.
  • FIG. 19 is a cross-sectional view showing a modification of the drainage structure of the display device.
  • FIG. 20 is an exploded perspective view of an air intake section included in the display device.
  • FIG. 21 is an exploded perspective view of an insertion tool and an intake-side filter included in the display device.
  • FIG. 22 is a perspective view showing a fixed state of the insertion tool to the intake section.
  • FIG. 23 is a block diagram showing a configuration for notifying filter clogging in the display device.
  • FIG. 24 is an enlarged view of region G shown in FIG.
  • FIGS. 1 and 2 are perspective views of a display device according to an embodiment of the present invention as viewed from the front side and the back side, respectively.
  • FIG. 3 is a rear view of the display device.
  • 4 and 5 are exploded perspective views of the display device viewed from the front side and the back side, respectively.
  • the display device includes a housing (2).
  • the housing (2) includes a front case half (210) constituting the front wall (21) of the housing (2) and a rear wall (210) of the housing (2). 22) and the back side case half (220) are joined to each other.
  • the housing (2) contains a liquid crystal display panel (1) and a circuit board (11) for controlling the liquid crystal display panel (1).
  • the circuit board (11) It is installed on the back surface (12) of the liquid crystal display panel (1).
  • the display device according to the present embodiment is built in another device such as a vending machine. Of course, the display device can be used alone without being incorporated in another device such as a vending machine.
  • the front wall (21) of the housing (2) is provided with an image display window (20) that makes the screen (10) of the liquid crystal display panel (1) visible from the outside.
  • the image display window (20) is closed by a glass plate (202).
  • a capacitive touch panel is provided on the glass plate (202).
  • FIGS. 7 and 8 are enlarged views of the B region and the C region shown in FIG. 6, respectively.
  • the glass plate (202) has a shape and size larger than that of the image display window (20), and the outer edge (203) of the glass plate (202) has a housing ( It overlaps the front wall (21) of 2) from the inside. And inside the housing
  • the liquid crystal display panel (1) is installed at a position where a gap S is formed between the screen (10) and the glass plate (202).
  • a seal member (24) surrounding the image display window (20) is interposed between the joint surfaces of the front wall (21) and the glass plate (202). This prevents water from entering between the joint surfaces. Further, a buffer member (25) is interposed between the glass plate (202) and the presser fitting (23).
  • FIGS. 9 is a cross-sectional view taken along the line DD shown in FIG. 3, and FIGS. 10 and 11 are enlarged views of the E region and the F region shown in FIG. 9, respectively.
  • the housing (2) is placed on the back wall (22) at the right and left ends as viewed from the back.
  • An intake part (3) and an exhaust part (4) are provided to communicate the outside and the inside of 2) with each other.
  • the intake section (3) has a posture with its open end (30) facing rightward, while the exhaust section (4) has a posture with its open end (40) facing left. is doing.
  • the intake section (3) functions as a ventilation section that allows air to pass from the outside to the inside of the casing (2)
  • the exhaust section (4) is provided from the inside of the casing (2). It functions as a ventilation part that allows air to pass outside.
  • the intake portion (3) and the exhaust portion (4) both have a shape and dimensions that are wide in the vertical direction.
  • a flow path (5) extending from the intake section (3) to reach the exhaust section (4) is formed inside the housing (2).
  • the liquid crystal display panel (1) passes through a gap S between the screen (10) and the glass plate (202).
  • the flow path (5) extends from the first flow path section (51) passing in the horizontal direction on the screen (10) of the liquid crystal display panel (1) and the intake section (3) to display the liquid crystal display.
  • An intake side channel portion (52) that passes through the right side surface of the panel (1) and reaches the first channel portion (51), and a left side surface side of the liquid crystal display panel (1) that extends from the exhaust portion (4)
  • an exhaust-side flow path portion (53) that reaches the first flow path portion (51).
  • the first flow path portion (51) is formed by the screen (10) of the liquid crystal display panel (1) and the glass plate (202). Further, the intake-side flow path portion (52) and the exhaust-side flow path portion (53) are respectively formed by a first flow path forming member (61) and a second flow path forming member (62) as shown in FIGS. Is formed.
  • FIG. 12 is a perspective view showing the second flow path forming member (62), and FIG. 13 is an enlarged view of the second flow path forming member (62).
  • the back wall (62b) of the second flow path forming member (62) is formed with openings (621) at three locations, an upper stage, a middle stage, and a lower stage.
  • a slit-like passageway (622) extending vertically is provided in the front wall (62a) of the second flow path forming member (62).
  • Each opening (621) and passage (622) communicate with each other within the second flow path forming member (62).
  • each partition member (623) is a plate-like member that expands in the horizontal direction in the assembled state of the display device.
  • the space in the second flow path forming member (62) that is, the exhaust side flow path section (53)
  • the exhaust-side flow path portion (53) is divided into a plurality of spaces (531) to (531) communicated from the exhaust portion (4) to the first flow path portion (51) by the partition members (623) and (623). It is divided into.
  • the first flow path forming member (61) has the same configuration as the second flow path forming member (62). That is, referring to FIG. 10, the back wall (61b) of the first flow path forming member (61) has openings (611) formed at three locations thereof, and the front surface of the first flow path forming member (61).
  • the wall (61a) is provided with a slit-like passageway (612) that extends vertically.
  • the space in the first flow path forming member (61) (that is, the intake side flow path section (52)) is partitioned into three spaces (521) to (521) by the partition member. Each space (521) corresponds to one opening (611), and the space (521) communicates with the passage (612) from the corresponding opening (611).
  • the intake side flow path portion (52) is partitioned by the partition member into a plurality of spaces (521) to (521) communicating from the intake portion (3) to the first flow path portion (51).
  • each through hole (624) is formed in the space on the back surface (12) side of the liquid crystal display panel (1) and in the second flow path forming member (62) in the assembled state of the display device.
  • the space that is, the exhaust-side flow path portion (53)).
  • nine through holes (614) to (614) are formed in the side wall (61c) of the first flow path forming member (61), similarly to the second flow path forming member (62). Has been. Therefore, the space on the back surface (12) side of the liquid crystal display panel (1) and the space in the first flow path forming member (61) (that is, the intake side flow path section (52)) form the through hole (614). Are in communication with each other.
  • the casing (2) further passes through the back surface (12) side of the liquid crystal display panel (1) and flows from the intake side flow passage portion (52) to the exhaust side flow.
  • a second flow path part (54) extending to the path part (53) is formed, and a part of the flow path (5) is constituted by the second flow path part (54).
  • each fan (71) is provided corresponding to one space (521) in the intake-side flow path portion (52), and the inside of the space (521) It has a posture and a position where air can be sent to. Accordingly, as each fan (71) is driven, the air in the intake section (3) moves to the space (521) corresponding to the fan (71) as indicated by the solid arrow in FIG. The air flows in the horizontal direction in the space (521) without being mixed with the air flowing in the other space (521), and the first flow path portion (51) and the second flow path portion (54). Flow into. Along with this, air outside the casing is sucked from the opening end (30) of the intake section (3).
  • each fan (72) is provided corresponding to one space (531) in the exhaust side flow path portion (53), and the inside of the space (531) It has a posture and a position where air can be extracted from the air. Accordingly, when each fan (72) is driven, the first flow path portion (51) and the second flow path are moved to the space (531) corresponding to the fan (72) as shown by a solid arrow in FIG. The air in the section (54) flows in, and then the air flows in the horizontal direction in the space (531) and moves to the exhaust section (4). Along with this, air inside the housing is discharged from the open end (40) of the exhaust (4).
  • the first flow path portion (51) and the second flow path portion (54) are respectively introduced from the intake side as indicated by solid arrows in FIG. An air flow that moves in the horizontal direction toward the exhaust side is generated.
  • the intake portion (3) is provided with a pair of intake side filters (73) and (73) at positions near the open end portion (30).
  • the exhaust section (4) is provided with a pair of exhaust-side filters (74) and (74) in the vicinity of the opening end (40).
  • the intake filter (73) has a higher filter function (dust collection performance) than the exhaust filter (74).
  • the exhaust side filter (74) is composed of a mesh
  • the intake side filter (73) is composed of a mesh and a finer filter material than the mesh. (See FIG. 21).
  • the air flowing in the first flow path portion (51) absorbs heat accumulated in the screen (10) of the liquid crystal display panel (1), and the air flowing in the second flow path portion (54) Absorbs heat accumulated on the circuit board (11).
  • the air heated in the first flow path part (51) and the second flow path part (54) is discharged from the exhaust part (4) to the outside of the housing.
  • the air sent from each fan (71) in the intake section (3) passes through the space (521) corresponding to the fan (71) in another space (521). It flows in the horizontal direction without being mixed with the air flowing through the first flow path portion (51) and the second flow path portion (54). For this reason, the air sent out from the three fans (71) to (71) does not collide with each other in the intake side flow path section (52) to generate turbulence or vortex, and therefore the liquid crystal display panel (1 ) On the screen (10), that is, in the first flow path portion (51), air tends to flow uniformly in the horizontal direction. Further, air easily flows in the horizontal direction on the back surface (12) side of the liquid crystal display panel (1), that is, in the second flow path portion (54).
  • the entire screen (10) of the liquid crystal display panel (1) and the circuit board (11) are efficiently cooled by the air sucked from the air intake section (3). Therefore, even if the screen (10) of the liquid crystal display panel (1) is heated by sunlight incident from the image display window (20) and the circuit board (11) is driven to generate heat, the liquid crystal display panel (1) ) Of the screen (10) and the circuit board (11) are suppressed, and as a result, normal operations of the liquid crystal display panel (1) and the circuit board (11) are maintained. In addition, since air flows uniformly in the first flow path portion (51), unevenness in the sensitivity of the touch panel on the glass plate (202) hardly occurs.
  • the temperature difference between the glass plate (202) and the outside air is reduced by feeding cold air into the first flow path portion (51), and as a result, the glass Condensation hardly occurs on the inner surface of the plate (202).
  • the condensed water droplets are caused by the air flowing on the screen (10) of the liquid crystal display panel (1). Blown away. Therefore, it is difficult for water droplets to adhere to the screen (10) and the glass plate (202) of the liquid crystal display panel (1), and as a result, the liquid crystal display panel (1) is always in a state where the screen (10) is visible. Will be maintained.
  • the intake filter (73) has a higher filter function (dust collection performance) than the exhaust filter (74). Therefore, even when a large amount of air is inhaled from the intake section (3), most of the dust in the air is captured by the intake side filter (73). Therefore, air with a very small dust content is introduced into the housing, and as a result, the failure of the display panel (1) that may be caused by dust is prevented.
  • a pair of exhaust side filters (74) and (74) are provided in the exhaust part (4). Therefore, when the fans (71) and (72) are stopped, even if air flows from the outside to the inside of the housing (2) through the exhaust section (4), the dust in the air is removed from the exhaust filter ( 74) Captured by (74). Accordingly, the intrusion of dust into the housing is prevented, and as a result, the failure of the liquid crystal display panel (1) and the circuit board (11) that may be caused by the dust is prevented.
  • FIGS. 14 and 15 are a perspective view and an exploded perspective view, respectively, of the display device viewed from the bottom side.
  • the opening (260) to (260) that penetrates the bottom wall (26) from the inner surface to the outer surface is formed in the bottom wall (26) of the housing (2).
  • each opening (260) has a shape elongated in the horizontal direction, and the three openings (260) to (260) are arranged in a row in the horizontal direction.
  • FIGS. 16 and 17 are perspective views of the front case half (210) of the housing (2) as viewed from the upper rear side and the lower rear side, respectively.
  • the bottom wall (26) of the housing (2) has water on its inner surface that drains outside the housing to the openings (260) to (260).
  • a first groove (261) for guiding is recessed.
  • the pair of left and right side walls (27), (28) of the housing (2) has water on the inner surface of the bottom wall.
  • Second grooves (271) and (281) are formed to guide the top.
  • the upper surface wall (29) of the housing (2) has a third groove on its inner surface for guiding water to be discharged outside the housing to the side wall (27). (291) is formed.
  • a cover member (262) for closing the central region of each opening (260) is detachably attached to the bottom wall (26) of the housing (2).
  • the cover member (262) is formed with a fitting portion (263) that fits into the opening (260), and the fitting portion (263) is opened.
  • the cover member (262) is attached to the bottom wall (26) of the housing (2) as shown in FIG.
  • the display device has a configuration capable of cleaning the inside of the housing (the screen (10) of the liquid crystal display panel (1)).
  • an opening is formed in the presser fitting (23) so that the cleaning tool can be inserted onto the screen (10) of the liquid crystal display panel (1).
  • a cover member (262) is attached to the bottom wall (26) of the housing (2) as shown in FIG. 14, thereby preventing dust from entering each opening (260). Will be suppressed.
  • the cover member (262) is attached to the bottom wall (26)
  • the central region of each opening (260) is blocked by the cover member (262), while both end regions remain exposed. Therefore, the exposed area can function as a drain outlet.
  • the water if water enters the housing due to some reason, for example, when the display device is installed outdoors and the seal member (24) deteriorates, the water moves onto the bottom wall (26) by gravity. Then, it is discharged from the exposed area (drainage port) of each opening (260).
  • the display device has a drainage structure for discharging water generated inside the housing to the outside of the housing.
  • a drainage structure is realized because the display device of this embodiment has a configuration in which air flows in the horizontal direction in the housing (2).
  • the second grooves (271) and (281) are formed on the inner surfaces of the side walls (27) and (28), and the third groove (291) is formed on the inner surface of the upper surface wall (29). Is formed. Therefore, water generated inside the casing for some reason is efficiently guided onto the bottom wall (26).
  • a first groove (261) is formed on the inner surface of the bottom wall (26). Therefore, the water on the bottom wall (26) can easily move to the exposed area (drain) of each opening (260), and as a result, the water is efficiently discharged from the area (drain). Become.
  • FIG. 19 is a cross-sectional view showing a modification of the drainage structure of the display device.
  • the first groove (261) is provided with a raised portion (264) extending in the lateral direction along the inner surface of the bottom wall (26). 264) and the front wall (21) of the housing (2).
  • At least one of the side walls (27), (28) and the upper surface wall (29) of the housing (2) has a rod-like cleaning.
  • An opening for inserting the tool into the housing may be formed, and a cover member for closing the opening may be detachably attached.
  • FIG. 20 is an exploded perspective view of the intake section (3).
  • a pair of intake windows (311) for inserting a pair of intake side filters (73), (73) into the intake section (3) are respectively provided in the back portion (31) of the intake section (3).
  • the display device includes an insertion tool (32) that can be inserted and removed from each insertion window (311), and an intake side filter (73) is attached to the insertion tool (32).
  • FIG. 21 is an exploded perspective view of the insertion tool (32) and the intake side filter (73).
  • each insertion tool (32) includes a storage case (320) formed by joining two case halves (321) and (321), and a support for supporting the storage case (320). It consists of a body (322).
  • each intake side filter (73) includes a mesh (731) and a filter material (732) finer than the mesh (731). The mesh (731) and the filter material (732) are accommodated in the accommodating case (320) of the insertion tool (32) in a state where they are overlapped.
  • each insertion tool (32) is formed with a pair of upper and lower flanges (323) and (323), and each flange (323) is inserted into the support (322).
  • the tool (32) is inserted into the corresponding insertion window (311), it comes into contact with the back part (31) of the intake part (3).
  • one arm portion (323) corresponds to each arm portion (33) (33).
  • each arm portion (33) has a predetermined rotation angle and a collar portion (323) corresponding to the arm portion (33).
  • the hook part (323) is sandwiched between the arm part (33) and the back part (31) of the intake part (3) as shown in FIG. However, it is fixed to the intake portion (3) in a state of being inserted into the corresponding insertion window (311).
  • the arm portion (33) is locked to the intake portion (3) at the predetermined rotation angle between each arm portion (33) and the back portion (31) of the intake portion (3).
  • a locking mechanism is provided to prevent the rotation.
  • the locking mechanism includes a locking projection (312) provided on the back portion (31) of the intake portion (3) and a locking projection (312) provided on the tip of the arm portion (33). It is comprised from the latching recessed part (331) engaged with.
  • the fixing mechanism for fixing each insertion tool (32) to the intake portion (3) in a state of being inserted into the corresponding insertion window (311) includes the flange portion (323) and the arm portion (33). And the locking mechanism.
  • the operation part (332) for user operation is provided in the front-end
  • the insertion side filter (73) is detachably installed in the intake portion (3) by inserting the corresponding insertion tool (32) from each insertion window (311). Will be.
  • each insertion window (311) is formed in the back part (31) of the intake part (3). Therefore, even when the duct is attached to the opening end (30) of the intake section (3), the intake side filter (73) can be easily replaced.
  • the intake side filter (73) can be replaced from the back side of the display device, it is easy for a service person or the like to replace the intake side filter (73).
  • the configuration that enables the filter replacement from the back side of the display device in this way is particularly effective when the display device is built in another device such as a vending machine.
  • the display device it is possible to design the fixing mechanism with a small height. Therefore, the display device does not need to be increased in thickness although it has a configuration in which the intake side filter (73) is replaced from the back side.
  • the exhaust unit (4) has the same configuration as the intake unit (3). However, the exhaust side filter (74) provided in the exhaust part (4) is comprised only from the mesh.
  • FIG. 23 is a block diagram showing a configuration for notifying filter clogging in the display device.
  • the display device includes a temperature sensor (81) that acquires temperature information that changes according to the temperature of the liquid crystal display panel (1), and a velocity of air that flows in the intake section (3).
  • a wind speed sensor (82) for acquiring changing wind speed information, a notification section (83) for notifying clogging of the intake side filter (73), and temperature information and wind speed sensor (82) acquired by the temperature sensor (81) Is provided with a control unit (84) for controlling the notification operation of the notification unit (83) based on the wind speed information acquired by the above, and a memory (85) in which various types of information are recorded.
  • the temperature sensor (81) is installed in the vicinity of the liquid crystal display panel (1) in the intake-side flow path portion (52). Further, the wind speed sensor (82) is installed at a position between the intake side filter (73) and the fan (71) in the intake section (3).
  • the intake side filter (73) is clogged, the temperature in the intake side flow path (52) rises due to the heat from the liquid crystal display panel (1) as compared with the case where there is no clogging.
  • the speed of the air discharged through the intake side filter (73) becomes larger than when there is no clogging.
  • FIG. 24 is an enlarged view of the G region shown in FIG.
  • a through-hole (221) that penetrates the rear wall (22) from the inner surface to the outer surface is formed in the rear wall (22) of the housing (2).
  • the notification unit (83) is configured by an LED (Light Emitting Diode), and is provided on the back surface (12) side of the liquid crystal display panel (1) inside the housing.
  • the notification unit (83) has a posture directed to the through hole (221). Therefore, the user can recognize the light from the notification unit (83) through the through hole (221) from the back side of the housing (2).
  • a plurality of liquid crystal display panels (1) for adjusting the image quality and the like at positions near the formation region of the through holes (221). Adjustment buttons (222) to (222) are provided.
  • the control unit (84) is configured on the circuit board (11). As shown in FIG. 23, the control unit (84) determines whether or not the temperature of the liquid crystal display panel (1) is higher than a predetermined temperature based on the temperature information acquired by the temperature sensor (81). And a second determination unit (842) for determining whether or not the speed of the air flowing in the intake unit (3) is greater than a predetermined speed based on the wind speed information acquired by the wind speed sensor (82). Is included.
  • temperature information and wind speed information are respectively acquired by the temperature sensor (81) and the wind speed sensor (82). These pieces of information are recorded in the memory (85) as initial information.
  • the predetermined temperature and the predetermined speed are set based on the initial information, and these information are also recorded in the memory (85).
  • the control unit (84) further instructs the notification unit (83) to execute the notification operation based on the determination results of the first determination unit (841) and the second determination unit (842). Part (843). Specifically, the command unit (843) determines that the temperature of the liquid crystal display panel (1) is higher than a predetermined temperature by the first determination unit (841), or intakes the air by the second determination unit (842). When it is determined that the speed of the air in the section (3) is greater than the predetermined speed, the notification section (83) is instructed to perform a notification operation.
  • the notification unit (83) notifies the clogging of the intake side filter (73) by turning on or blinking the LED in response to a command from the command unit (843).
  • the notification unit (83) can notify that the intake side filter (73) is clogged, that is, that it is time to replace the intake side filter (73).
  • the user can recognize light from the notification unit (83) through the through hole (221) from the back side of the housing (2). Therefore, a user such as a serviceman who often visually recognizes the back surface of the display device can easily recognize clogging of the intake side filter (73).
  • the situation can be notified immediately after the intake side filter (73) is clogged. Accordingly, it is possible to prevent the temperature of the liquid crystal display panel (1) from excessively rising due to the time for replacing the intake side filter (73).
  • another temperature sensor (86) is installed in the vicinity of the liquid crystal display panel (1) in the exhaust side flow path portion (53), and the exhaust portion (4 ),
  • Another wind speed sensor (87) is installed at a position between the exhaust side filter (74) and the fan (72), and the temperature information acquired by the temperature sensor (86) and the wind speed sensor (87 ) May notify the clogging of the exhaust filter (74) by the notification unit (83). If the exhaust filter (74) is clogged, the temperature in the exhaust channel (53) rises due to the heat from the liquid crystal display panel (1), compared to when there is no clogging. The speed of air immediately before passing through the exhaust filter (74) is smaller than when there is no clogging.
  • one of the intake-side flow path portion (52) and the exhaust-side flow path portion (53) extends through the upper surface side of the liquid crystal display panel (1), and the other The flow path portion may extend through the lower surface side of the liquid crystal display panel (1).
  • the first flow path portion (51) passes in the vertical direction on the screen (10) of the liquid crystal display panel (1).
  • an intake portion (3) and an exhaust portion (4) may be provided on the rear wall (22) of the housing (2) in a vertical relationship.
  • the display device may have a configuration in which only one of the fans (71) and (72) is provided. Further, in the display device, the control unit (84) performs the notification operation of the notification unit (83) based only on information acquired by any one of the temperature sensor (81) and the wind speed sensor (82). You may control.
  • the various configurations employed in the display device are not limited to display devices having a liquid crystal display panel, but may be applied to display devices having various display panels such as plasma display panels and organic EL (Electro-Luminescence) display panels. I can do it.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif d'affichage comportant : un panneau d'affichage; un boîtier pour recevoir le panneau d'affichage; une unité de ventilation (3) qui est disposée sur le boîtier, qui relie l'extérieur du boîtier et l'intérieur de celui-ci, et caractérisée par une posture dans laquelle des extrémités d'ouverture (30) sont disposées en direction du côté et par le fait qu'elle comporte des fenêtres d'insertion (311) s'ouvrant sur la section arrière (31); des ventilateurs (71) destinés à guider de l'air au niveau de l'intérieur ou de l'extérieur du boîtier en faisant passer l'air au travers de l'unité de ventilation; et des filtres (73) insérés dans la fenêtre d'insertion et disposés à l'intérieur de l'unité de ventilation d'une manière détachable.
PCT/JP2011/069380 2010-08-30 2011-08-29 Dispositif d'affichage WO2012029683A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/780,433 US20130171921A1 (en) 2010-08-30 2013-02-28 Display device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2010-192575 2010-08-30
JP2010192574A JP5598915B2 (ja) 2010-08-30 2010-08-30 画像表示装置
JP2010-192574 2010-08-30
JP2010192575A JP2012048145A (ja) 2010-08-30 2010-08-30 画像表示装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/069378 Continuation-In-Part WO2012029681A1 (fr) 2010-08-30 2011-08-29 Dispositif d'affichage

Publications (1)

Publication Number Publication Date
WO2012029683A1 true WO2012029683A1 (fr) 2012-03-08

Family

ID=45772771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/069380 WO2012029683A1 (fr) 2010-08-30 2011-08-29 Dispositif d'affichage

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Country Link
WO (1) WO2012029683A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111315184A (zh) * 2019-11-28 2020-06-19 苏州佳世达电通有限公司 电子装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03265192A (ja) * 1990-03-15 1991-11-26 Toshiba Lighting & Technol Corp 電気機器の冷却装置
JPH0413982U (fr) * 1990-05-24 1992-02-04
JPH0855567A (ja) * 1994-06-09 1996-02-27 Canon Inc 画像表示装置
JP2000356956A (ja) * 1999-06-16 2000-12-26 Sony Corp 配列型表示装置
JP2001063357A (ja) * 1999-08-26 2001-03-13 Denso Corp 空調装置
JP2006163217A (ja) * 2004-12-10 2006-06-22 Mitsubishi Electric Corp 屋外用表示装置
JP2010038387A (ja) * 2008-07-31 2010-02-18 Max Co Ltd 換気装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03265192A (ja) * 1990-03-15 1991-11-26 Toshiba Lighting & Technol Corp 電気機器の冷却装置
JPH0413982U (fr) * 1990-05-24 1992-02-04
JPH0855567A (ja) * 1994-06-09 1996-02-27 Canon Inc 画像表示装置
JP2000356956A (ja) * 1999-06-16 2000-12-26 Sony Corp 配列型表示装置
JP2001063357A (ja) * 1999-08-26 2001-03-13 Denso Corp 空調装置
JP2006163217A (ja) * 2004-12-10 2006-06-22 Mitsubishi Electric Corp 屋外用表示装置
JP2010038387A (ja) * 2008-07-31 2010-02-18 Max Co Ltd 換気装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111315184A (zh) * 2019-11-28 2020-06-19 苏州佳世达电通有限公司 电子装置

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