WO2020248196A1 - 显示装置、电子设备及设备安装件 - Google Patents

显示装置、电子设备及设备安装件 Download PDF

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Publication number
WO2020248196A1
WO2020248196A1 PCT/CN2019/091143 CN2019091143W WO2020248196A1 WO 2020248196 A1 WO2020248196 A1 WO 2020248196A1 CN 2019091143 W CN2019091143 W CN 2019091143W WO 2020248196 A1 WO2020248196 A1 WO 2020248196A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
heat
display device
back plate
pin
Prior art date
Application number
PCT/CN2019/091143
Other languages
English (en)
French (fr)
Inventor
肖军
黄维
Original Assignee
京东方科技集团股份有限公司
高创(苏州)电子有限公司
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
Application filed by 京东方科技集团股份有限公司, 高创(苏州)电子有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN201980000827.3A priority Critical patent/CN112400234B/zh
Priority to PCT/CN2019/091143 priority patent/WO2020248196A1/zh
Priority to US16/767,386 priority patent/US11385491B2/en
Publication of WO2020248196A1 publication Critical patent/WO2020248196A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G02F1/133385—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell with cooling means, e.g. fans
    • 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/36—Airflow channels, e.g. constructional arrangements facilitating the flow of air

Definitions

  • the present disclosure relates to a display device, electronic equipment and equipment installation parts.
  • the heat emitted by the display module used in the display device cannot be effectively discharged, which may reduce the service life of the display device.
  • a display device including: a first display module having a first back plate; a second display module having a second back plate located opposite to the first back plate; A heat dissipation element is located between the first backplane and the second backplane; and a second heat dissipation element is thermally connected to the first heat dissipation element.
  • the first heat dissipating member includes: a first heat dissipating part located between the first back plate and the second back plate, and between the first back plate and the second back plate The entire overlap area of the board is distributed; and the second heat dissipation portion is made integrally with the first heat dissipation portion and extends beyond the overlap area of the first back plate and the second back plate; wherein, the The second heat dissipation member is located on a side of the first display module and the second display module adjacent to the second heat dissipation portion, and is thermally connected to the second heat dissipation portion.
  • the second heat dissipation element includes: a heat conduction block connected to the second heat dissipation part; and a heat dissipation fin set located on the surface of the heat conduction block and formed integrally with the heat conduction block, or Set on the heat conducting block.
  • the heat conducting block is in the shape of a plate, and has four side end faces, and a first heat dissipation surface and a second heat dissipation surface that are located between the four side end faces and are arranged oppositely.
  • the surface is parallel to the display screen of the first display module, and the second heat dissipation surface is parallel to the display screen of the second display module.
  • the first heat dissipating member includes a plurality of elongated members, and each of the plurality of elongated members includes a straight bar section as the first heat dissipating part and a second heat dissipating part.
  • the heat conduction block is provided with a plurality of mounting holes on the surface of one side adjacent to the extension section, and the extension section of each of the plurality of slender members is inserted and fixed to the plurality of slender members. Inside the mounting hole.
  • the material of the heat conducting block and the heat dissipation fin group is metal.
  • the material of the heat conducting block and the heat dissipation fin set is aluminum.
  • the display device further includes: a third heat dissipation member disposed on the heat dissipation fin group for assisting the heat conduction block and the heat dissipation fin group to dissipate heat.
  • the heat dissipation fin set includes a plurality of plate-type or pin-type heat dissipation fins distributed along the whole or part of at least one of the first heat dissipation surface and the second heat dissipation surface, so
  • the third heat sink includes: one or more first fans, which are arranged on the plurality of plate-shaped or pin-shaped heat dissipation fins, and are fixedly connected to the heat-conducting block, and are used for dissipating heat from the heat-conducting block and the heat-conducting block.
  • the fin group is air-cooled.
  • the entirety of the first heat dissipation surface and the entirety of the second heat dissipation surface are distributed with a plurality of pin-shaped heat dissipation fins
  • the plurality of first fans include At least two axial fans are arranged on the pin-shaped radiating fins on the surface and spaced in a direction parallel to the first radiating surface, and are arranged on the pin-shaped radiating fins on the second radiating surface, and are arranged along parallel to the At least two axial fans are spaced apart in the direction of the second heat dissipation surface.
  • the first heat dissipation surface is parallel to the second heat dissipation surface
  • the plurality of pin-shaped heat dissipation fins are parallel to each other and perpendicular to both the first heat dissipation surface and the second heat dissipation surface
  • the air inlet end of the axial flow fan is located on the side of the axial flow fan adjacent to the heat conduction block
  • the air outlet end of the axial flow fan is located on the side of the axial flow fan away from the heat conduction block
  • the rotation axis of the axial flow fan is parallel to the plurality of pin-shaped radiating fins.
  • the length of the pin-type heat dissipation fin located in the setting area of the axial fan among the plurality of pin-type heat dissipation fins is shorter than that of the plurality of pin-type heat dissipation fins located in the shaft.
  • the length of the pin-shaped radiating fins around the area where the flow fan is installed forms a recessed structure for installing the axial flow fan.
  • the air outlet end of the axial flow fan protrudes toward the air outlet side relative to the pin heat dissipation fins located at the periphery of the setting area of the axial flow fan among the plurality of pin heat dissipation fins.
  • the second heat dissipating element further includes: a cover having at least one open end; wherein the inner side wall of the cover at least partially covers the heat conducting block and the heat dissipation fin group
  • the one or more first fans are configured to discharge the hot air gathered in the cover to the outside through the open end of the cover.
  • the cover body has two opposite open ends, and the entirety of the first heat dissipation surface and the entirety of the second heat dissipation surface are distributed with a plurality of pin-shaped heat dissipation fins, the The cover body has four inner side walls, which are respectively closely attached to the four side end faces of the heat conducting block, and are integrally covered outside the plurality of pin heat dissipation fins in the length direction of the pin heat dissipation fins .
  • a plurality of first linear elongated grooves are provided on one side of the first back plate adjacent to the second back plate, and the second back plate is adjacent to the first back plate.
  • One side of the plate is provided with a plurality of second linear elongated grooves, and the plurality of second linear elongated grooves correspond to the plurality of first linear elongated grooves one-to-one, and correspond to the The plurality of first linear elongated grooves enclose a plurality of linear accommodating cavities, and the straight rod sections of the plurality of elongated members are respectively located in the plurality of linear accommodating cavities.
  • an electronic device including the aforementioned display device.
  • the electronic device further includes: an equipment housing, which is arranged outside the display device; and a second fan, which is arranged in the equipment housing and is located in the first display module of the display device And the ground side of the second display module; wherein the second heat sink of the display device is located on the ground side of the first display module and the second display module.
  • a transparent window is provided on the side wall of the equipment housing corresponding to the first display module and the second display module of the display device, and the transparent window is connected to the first display module of the display device.
  • An equal ventilation gap is provided between the first display module and the second display module.
  • the device housing further includes: an air inlet opened on the side wall of the device housing on the same side of the transparent window corresponding to one of the first display module and the second display module And located on the ground side of the second fan; the first air outlet and the second air outlet are respectively opened on the first and second side walls that are opposite and parallel to the equipment housing, and both Located on the sky side of the first display module and the second display module, the first side wall is on the same side as the transparent window corresponding to the first display module, and the second side wall is The transparent window corresponding to the second display module is on the same side; wherein, the end of the second heat sink on the sky side is not higher than the lowest position of the first air outlet and the second air outlet on the ground side.
  • the electronic device further includes: a first air deflector and a second air deflector, which are respectively disposed in the device housing at the first air outlet and the second air outlet.
  • the inner side is located on the sky side of the second heat sink, and is used to guide the airflow in the equipment housing to be discharged outward through the first air outlet and the second air outlet respectively; wherein, the The first end of the first air deflector on the sky side is connected to the inner wall surface of the first side wall, and the first end of the first air deflector is higher than the highest of the first air outlet on the sky side.
  • the second end of the first air deflector located on the ground side is set at the center position between the first side wall and the second side wall; the second air deflector is located on the first side of the sky The end is connected to the inner wall surface of the second side wall, the first end of the second air deflector is higher than the highest position of the second air outlet on the sky side, and the second air deflector is located on the ground
  • the second end of the side is arranged at a central position between the first side wall and the second side wall.
  • an equipment mounting member for use with the aforementioned display device, wherein the equipment mounting member includes: an equipment housing with an installation area for the display device inside; and a second The fan is arranged in the equipment housing and is located on the ground side of the installation area of the display device.
  • two transparent windows are provided on the two opposite side walls of the equipment housing corresponding to the installation area of the display device, and the two transparent windows are parallel and have a larger distance than the vertical distance of the display device. Width in the direction of the two transparent windows.
  • the device housing further includes: an air inlet opened on the side wall on the same side of the device housing and one of the two transparent windows, and located at the side of the second fan The ground side; the first air outlet and the second air outlet are respectively opened on the two side walls, and are located on the sky side of the installation area of the display device.
  • the equipment mounting member further includes: a first air deflector and a second air deflector, which are respectively disposed in the equipment housing and located at the first air outlet and the second air outlet And are located on the sky side of the installation area of the display device, and are used to guide the airflow in the equipment housing to be discharged outward through the first air outlet and the second air outlet respectively; wherein, The first end of the first wind deflector on the sky side and the first end of the second wind deflector on the sky side are respectively connected to the inner wall surfaces of the two side walls, the first wind deflector The first end is higher than the highest position of the first air outlet on the sky side, and the first end of the second air deflector is higher than the highest position of the second air outlet on the sky side.
  • the second end of a wind deflector on the ground side and the second end of the second wind deflector on the ground side are both arranged in a central position between the two side walls.
  • Fig. 1 is an exploded view of the structure of a first back plate, a first heat sink, and a second back plate in an embodiment of a display device according to the present disclosure
  • FIG. 2 is a partially enlarged schematic diagram of a part of the structure of the second back plate corresponding to the mark A in FIG. 1 near the first heat sink;
  • FIG. 3 is a partial schematic diagram of a cross-sectional structure taken along a direction perpendicular to the length direction of the elongated member in an embodiment of the display device according to the present disclosure
  • FIG. 4 is a partial schematic diagram of an assembly structure of a first heat dissipation member, a second heat dissipation member, and a third heat dissipation member in an embodiment of the display device according to the present disclosure
  • FIG. 5 is a partial schematic diagram of the assembly structure of the first back plate, the second back plate, the first heat sink, the second heat sink and the third heat sink in an embodiment of the display device according to the present disclosure
  • FIG. 6 is a partial schematic diagram of an assembly structure of a first backplane, a second backplane, a first heat sink, a second heat sink with a cover, and a third heat sink in another embodiment of the display device of the present disclosure
  • FIG. 7 is a schematic diagram of the external structure of an embodiment of an electronic device according to the present disclosure.
  • Fig. 8 is a partial schematic diagram of the air outlet on the sky side to the air inlet on the ground side in the AA section of Fig. 7;
  • Fig. 9 is a partial enlarged schematic view of the assembly structure of the display device in the equipment housing of Fig. 8.
  • a specific device when it is described that a specific device is located between the first device and the second device, there may or may not be an intermediate device between the specific device and the first device or the second device.
  • the specific device When it is described that a specific device is connected to another device, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but has an intermediate device.
  • the outdoor temperature may reach 40° or above, and the surface temperature of the display module will rise rapidly under direct sunlight.
  • the backplanes of some display modules are adjacent to light source components that generate large amounts of heat, and long-term use will cause the internal temperature of the display modules to become too high, thereby affecting the service life of the components.
  • the embodiments of the present disclosure provide a display device, an electronic device, and an equipment mounting member, which can improve the heat dissipation effect of the display module.
  • the display device may include a single-sided display (that is, a display that displays in a single direction, hereinafter referred to as a single screen) or a double-sided display (that is, a display that displays in two opposite directions, below Referred to as dual screen).
  • a single screen may be a single display screen, or may include a spliced screen obtained by adjacently splicing multiple display screens along a plane perpendicular to the display direction of the display screen.
  • Any one of the dual screens may be a single display, or may include a spliced screen obtained by splicing multiple display screens.
  • the display screen is also called a display module, and the dual screen is a combination of two display modules.
  • the type of the display is not limited, and it can be a liquid crystal display, an organic light emitting diode display or a quantum dot display, etc.
  • FIG. 1 is an exploded view of the structure of a first backplane, a first heat sink and a second backplane in an embodiment of a display device according to the present disclosure.
  • FIG. 2 is a partial enlarged schematic diagram of a part of the structure of the second back plate corresponding to the mark A in FIG. 1 near the first heat sink.
  • 3 is a partial schematic diagram of a cross-sectional structure taken along a direction perpendicular to the length direction of the elongated member in an embodiment of the display device according to the present disclosure.
  • 4 is a partial schematic diagram of the assembly structure of the first heat dissipation member, the second heat dissipation member and the third heat dissipation member in an embodiment of the display device according to the present disclosure.
  • FIG. 5 is a partial schematic diagram of the assembly structure of the first back plate, the second back plate, the first heat sink, the second heat sink and the third heat sink in an embodiment of the display device according to the present disclosure.
  • the display device includes: a first display module 10a, a second display module 10b, a first heat sink and a second heat sink 30.
  • the first display module 10a has a first back plate 11a.
  • the second display module 10b has a second back plate 11b located on the opposite side of the first back plate 11a.
  • the first heat sink is located between the first back plate 11 a and the second back plate 11 b. The first heat sink can transfer the heat of the first back plate 11 a and the second back plate 11 b to the second heat sink 30 to realize heat dissipation of the first back plate 11 a and the second back plate 11 b.
  • the first heat sink is located between the first back plate 11a and the second back plate 11b, and is thermally connected to the first back plate 11a and the second back plate 11b, respectively, to achieve Heat conduction.
  • the thermally conductive connection is a direct contact connection between the first heat dissipation element and the first backplane and/or the second backplane, or the first heat dissipation element is connected to the first backplane and/or the second backplane through other components, Realize heat conduction.
  • the thermally conductive connection in other embodiments of the present application may be a direct contact connection or a connection through other components.
  • the first back plate 11 a is located at the top
  • the second back plate 11 b is located at the bottom
  • the first heat sink is located between the first back plate 11 a and the second back plate 11 b.
  • the first backplane 11a and the second backplane 11b are arranged next to and opposite to each other, so that the two display sides of the first display module 10a and the second display module 10b face in two opposite directions.
  • the materials of the first back plate 11a and the second back plate 11b can be materials that are easy to conduct heat, such as metals such as aluminum and copper, or metal alloys.
  • the first backplane 11a and the second backplane 11b may be the backplanes of a single display screen, independent backplanes of multiple display screens constituting the splicing screen, or a common backplane.
  • the first backplane can be made
  • the heat of the board and the second back plate is conducted to the first heat sink, and then through the second heat sink connected to the first heat sink, so that a large amount of heat generated inside the display module can be dissipated through the first heat sink and the second heat sink
  • the parts are released to the outside, thereby effectively reducing the internal temperature of the display module, improving the heat dissipation effect of the display module, and increasing the service life of the display device.
  • the shapes of the first display module 10a and the second display module 10b may be different or the same, and the sizes of the first display module 10a and the second display module 10b may be different or the same, so as to correspond to each other. Meet the display requirements of the opposite sides of the display device.
  • the shapes of the first display module 10a and the second display module 10b are both rectangular parallelepipeds, and the dimensions (for example, overall length, width, and thickness) are the same, which can increase the interchangeability of display modules It is easy to repair and replace.
  • any one of the first back plate 11a and the second back plate 11b can be provided with a variety of functional holes, for example, through the surface of the back plate, for matching two screws
  • the first heat dissipation member includes one elongated member or a plurality of elongated members 20.
  • the elongated member may be a linear elongated member, or an elongated member in the shape of a broken line, a wave or a spiral.
  • the length of the elongated piece is much larger than the cross-sectional width or diameter of the elongated piece.
  • the first heat dissipation member may also include an elongated member.
  • the first heat dissipating member may have a flat plate shape, and the length or width of the flat plate-shaped first heat dissipating member is much larger than the thickness of the first heat dissipating member.
  • the elongated member 20 may be a solid rod or hollow tube made of a material that is easy to conduct heat (for example, metal such as copper or aluminum).
  • the elongate member 20 may include a heat pipe, which can achieve very high thermal conductivity.
  • the heat pipe may include a gravity heat pipe whose pipe wall is made of metal.
  • the gravity heat pipe may include a closed pipe whose inside is evacuated, and the material of the pipe wall may be copper with good thermal conductivity.
  • a working medium, such as water, acetone or naphthalene, is set inside the closed tube.
  • the vacuum tube can be divided into at least an evaporation section and a condensation section along the length direction.
  • the liquid working medium in the evaporation section undergoes a phase change after absorbing heat and evaporates into a gaseous working medium.
  • the gaseous working medium moves to the condensing section to release heat and phase changes to liquid. medium.
  • the liquid working medium can flow back to the evaporation section under the action of gravity, so as to realize the heat dissipation cycle.
  • the heat pipe may also include other forms of heat pipe, such as a cored heat pipe with a liquid wick inside.
  • the first heat dissipation member may include a first heat dissipation portion and a second heat dissipation portion.
  • the first heat dissipation portion is located between the first back plate and the second back plate, and is distributed over the entire overlapping area of the first back plate and the second back plate.
  • the overlapping area of the first back plate and the second back plate refers to the area where the first back plate and the second back plate overlap each other in the viewing angle of the vertical direction of the back plate.
  • the second heat dissipating part is made integrally with the first heat dissipating part, and extends beyond the overlapping area of the first back plate and the second back plate.
  • the second heat dissipation member is located on a side of the first display module and the second display module adjacent to the second heat dissipation portion, and is thermally connected to the second heat dissipation portion.
  • each of the plurality of elongated members 20 includes a straight rod section 20a as the first heat dissipation portion and an extension section 20b as a second heat dissipation portion .
  • the second heat dissipation member 30 may include a heat conduction block 31 and a heat dissipation fin group 32.
  • the heat conducting block 31 may be connected to the second heat dissipation portion of the first heat dissipation member, for example, to the extension section 20b of each of the plurality of elongate members 20.
  • the second heat sink 30 may also include an electrically driven semiconductor refrigerator, and the semiconductor refrigerator manufacturer may also provide multiple fins to increase the heat dissipation area.
  • the heat dissipation fin group 32 is located on the surface of the heat conduction block 31 and is integrally formed with the heat conduction block 31.
  • the heat dissipation fin group 32 may be fixedly connected to the surface of the heat-conducting block by bonding, welding or plug-in connection.
  • the heat dissipation fin group 32 can increase the heat dissipation area of the heat conducting block 31 and improve the heat dissipation efficiency.
  • the material of the heat conduction block and the heat dissipation fin set may be metal, for example, the material of the heat conduction block and the heat dissipation fin set is aluminum with good thermal conductivity and light weight.
  • the heat conducting block 31 is plate-shaped and has four side end surfaces.
  • the heat conducting block 31 also includes a first heat dissipation surface 31a and a second heat dissipation surface 31b located between the four side end surfaces and arranged in opposite directions.
  • the first heat dissipation surface 31a is parallel to the display screen of the first display module 10a
  • the second heat dissipation surface 31b is parallel to the display screen of the second display module 10b.
  • the heat conducting block 31 can be arranged on the first display module 10a and the second display module 10b In order to prevent the hot air around the second heat sink 30 from affecting the heat dissipation of the display module when it flows upwards around the display module, the temperature of the display module is increased.
  • the sky side mentioned in this application is the upper end, and the ground side is the lower end.
  • the heat conducting block 31 is provided with a plurality of mounting holes 31c on a surface adjacent to one side of the extension section 20b.
  • the extension section 20b of each of the plurality of elongate members 20 is inserted and fixed in the plurality of mounting holes 31c, respectively.
  • the mounting hole 31c may be a blind hole or a through hole, and may be in clearance fit with the extension section 20b to facilitate disassembly.
  • the diameter of the mounting hole 31c may be larger than the diameter of the extension section 20b by 0.6 mm.
  • the extension 20b and the mounting hole 31c can also be interference fit to make the connection between the two more reliable.
  • the heat dissipation fin set 32 includes a plurality of plate-type or pin-type heat dissipations distributed along the whole or part of at least one of the first heat dissipation surface 31a and the second heat dissipation surface 31b. Fins.
  • a plurality of plate-type or pin-type heat dissipation fins can be arranged randomly or in an array on the heat dissipation surface.
  • the height of the fin relative to the heat dissipation surface may be greater than the distance between the two heat dissipation surfaces (ie, the thickness of the heat conductor 31 in a direction perpendicular to the heat dissipation surface) to maximize the heat dissipation area of the second heat dissipation member 30.
  • the display device further includes a third heat sink.
  • the third heat dissipation member may be installed on the second heat dissipation member to assist the heat conducting block and the heat dissipation fin group to dissipate heat.
  • the third heat dissipation element may also be installed outside the second heat dissipation element, that is, it is not directly connected or contacted with the second heat dissipation element.
  • the first fan may be fixedly installed on the surface of the second heat dissipation element, or may be arranged at a certain distance from the second heat dissipation element, and the second heat dissipation element can be dissipated by the output cold air flow.
  • the pieces are cooled by air.
  • the second heat sink realizes active heat dissipation.
  • the third heat dissipating element is not limited to assisting the second heat dissipating element to dissipate heat through air cooling, and other active heat dissipation methods such as water cooling may also be used.
  • the third heat sink may not be provided, and the heat of the second heat sink may be passively dissipated into the surrounding air, which can reduce energy consumption and reduce costs.
  • the third heat sink includes one or more first fans 40.
  • the rotating shaft and blades of the first fan 40 are not shown in the figure, and one or more first fans 40 are arranged in the plurality of plate shapes or pins.
  • the heat-dissipating fins are fixedly connected to the heat-conducting block 31 for air-cooling the heat-conducting block 31 and the heat-dissipating fin group 32.
  • the entire first heat dissipation surface 31a and the entire second heat dissipation surface 31b are distributed with a plurality of pin-shaped heat dissipation fins.
  • the plurality of first fans 40 include at least two axial flow fans and at least two axial flow fans arranged on pin-shaped heat dissipation fins located on the first heat dissipation surface 31a and spaced in a direction parallel to the first heat dissipation surface 31a. At least two axial fans are arranged on the pin-shaped heat dissipation fins on the second heat dissipation surface 31b and spaced in a direction parallel to the second heat dissipation surface 31b.
  • the heat dissipation area of the second heat dissipation element can be greatly increased, and the heat dissipation efficiency can be improved.
  • At least two axial fans are arranged on each heat dissipation surface, so that more fins can reduce the temperature under the action of air cooling.
  • the first fan 40 may also include other types of fans, such as a radial fan, a centrifugal fan, etc.
  • the first heat dissipation surface is parallel to the second heat dissipation surface
  • the plurality of pin-shaped heat dissipation fins are parallel to each other and are connected to the first heat dissipation surface and the second heat dissipation surface.
  • the heat dissipation surfaces are vertical, the air inlet end of the axial flow fan can be located on the side of the axial flow fan adjacent to the heat conducting block, and the air outlet end of the axial flow fan is located on the axial flow fan away from all The side of the thermally conductive block.
  • the rotation axis of the axial flow fan is parallel to the plurality of pin-shaped radiating fins. The axial flow fan can draw out the hot air between the plurality of pin-shaped heat dissipation fins and the heat dissipation surface of the heat conduction block to reduce the temperature of the second heat dissipation member.
  • the heat dissipation surfaces on both sides of the heat conducting block 31 and the heat dissipation fins respectively provided on the heat dissipation surfaces on both sides can be made symmetrical, so that the heat dissipation on both sides of the heat conducting block is more uniform.
  • the air flow between the inside and outside of the radiating fin group can be made smoother. It is advantageous for the hot air between the radiating fins to be discharged outward in the shortest path.
  • the air inlet end of the axial flow fan may also be arranged on the side of the axial flow fan away from the heat conducting block, and the air outlet end of the axial flow fan may be arranged on the shaft.
  • the side of the flow fan adjacent to the heat-conducting block so that the cooler air outside the second heat-dissipating element can be blown between the pin-shaped heat-dissipating fins and the heat-dissipating surface of the heat-conducting block to achieve the temperature of the second heat dissipation element.
  • the length of the pin-shaped fins in the area where the axial fan is located among the plurality of pin-shaped fins can be made It is shorter than the length of the pin-shaped heat-radiating fin located at the periphery of the installation area of the axial flow fan among the plurality of pin-shaped heat-radiating fins to form a recessed structure in which the axial flow fan is installed.
  • the thicknesses of the axial fan and the pin-shaped heat dissipation fins in the vertical direction of the heat dissipation surface of the heat conducting block are overlapped to a certain extent, and the space occupation in the thickness direction can be reduced by such thickness overlap.
  • the axial flow fan After the axial flow fan is embedded in the recessed structure, it can be fixedly connected to the heat dissipation fin group 32 or the heat conduction block 31 through a connecting member (such as a screw or a buckle).
  • the heat dissipation fin group 32 or the heat conduction block 31 may reserve a connection structure for connecting with the connection member, such as a threaded hole or a clamping groove. This not only reduces the overall space occupation of the second heat sink and the third heat sink, but also makes the axial flow fan less likely to shift in a plane perpendicular to the axis of rotation 41 of the axial flow fan, thereby making the installation more stable.
  • the air outlet end of the axial flow fan can be made to protrude toward the air outlet side relative to the pin heat dissipation fins located at the periphery of the installation area of the axial flow fan among the plurality of pin heat dissipation fins .
  • the air inlet end is located between the multiple pin-shaped radiating fins, and the air outlet end is located outside the multiple pin-shaped radiating fins, so that the axial flow fan can effectively remove the pin-shaped fins and the hot air from the heat dissipation surface.
  • the air outlet is discharged to the outside to improve the heat dissipation effect.
  • a plurality of first linear elongated grooves 13a are provided on the side of the first back plate 11a adjacent to the second back plate 11b.
  • a plurality of second linear elongated grooves 13b are provided on the back plate 11b adjacent to the first back plate 11a.
  • the plurality of second linear elongated grooves 13b correspond to the plurality of first linear elongated grooves 13a one-to-one, and are enclosed with the plurality of first linear elongated grooves 13a
  • a plurality of linear accommodating cavities 13c, and the straight rod sections of the plurality of elongated members 20 are respectively located in the plurality of linear accommodating cavities.
  • the elongated member By arranging the straight rod section of the elongated member in the linear accommodating cavity enclosed by the first linear elongated groove and the second linear elongated groove, the elongated member can be effectively fixed on the first back plate and The position between the second backplanes makes the combined structure more compact and takes up less space. Moreover, the matching structure of the elongated member and the elongated groove is simpler and easier to process.
  • the linear accommodating cavity can be sleeved on the circumferential outer side of the straight rod section of the slender member, and at least partly contact with the contour of the straight rod section of the slender member to realize heat conduction.
  • the cross section of the inner wall of the linear accommodating cavity and the cross section of the outer wall at the corresponding position of the straight rod section can be made.
  • the shapes of the two are the same, and the sizes of the two meet the transition or interference fit relationship, so that the linear accommodating cavity can fit closely with the surface of the straight rod section.
  • first back plate and the second back plate may be provided with elongated grooves matching the number and shape of the elongated members, for example, a broken line, wave-shaped or spiral-shaped elongated groove may be provided , To match the slender pieces in the shape of broken lines, waves or spirals.
  • the first backplane 11a and the second backplane 11b each have four side end surfaces (in the x-axis direction and the y-axis direction, respectively), and are located between the four side end surfaces and are opposite to each other.
  • the four side end surfaces include a first side end surface (located upstream in the x-axis direction) and a second side end surface (located downstream in the x-axis direction) respectively corresponding to the sky side and the ground side of the display device.
  • a plurality of first linear grooves are located on the outer surface of the first back plate 11a and extend from the first side end surface of the first back plate 11a to the second side end surface of the first back plate 11a .
  • a plurality of first linear grooves are sequentially arranged along the y-axis on the outer surface of the first backing plate 11a, for example, from the third side end surface of the first backing plate 11a (located upstream along the y-axis) to the first backing plate
  • the fourth side end surface of 11a located downstream along the y-axis is parallel and equidistantly arranged with a plurality of first linear grooves.
  • a plurality of second linear grooves are located on the outer surface of the second back plate 11 b and extend from the first side end surface of the second back plate 11 b to the second side end surface of the second back plate 11 b.
  • a plurality of second linear grooves are also arranged in sequence along the y-axis on the outer surface of the second back plate 11b, and each of the second linear grooves may be parallel to each other and have the same spacing as the plurality of first linear grooves.
  • the grooves have the same pitch, so that the plurality of second linear grooves can be aligned with the first linear grooves one by one.
  • the straight rod sections of the plurality of elongated members 20 extend from the first side end surface of the second back plate 11 b to the second side end surface of the second back plate 11 b.
  • the straight rod section of the elongated member 20 can be arranged in a linear accommodating cavity enclosed by each of the first linear groove and the second linear groove, or can be arranged in a plurality of linear accommodating spaces at intervals along the y-axis. Set in the cavity.
  • the slender member can exchange heat with the back plate in a larger range through the linear groove and realize a larger area of heat dissipation. And by arranging multiple linear grooves in parallel and at the same spacing on the outer surface of the back plate, the heat exchange between the back plate and the multiple elongated parts can be made more uniform, so that the heat dissipation of the back plate is more balanced and reduces Risk of local overheating.
  • the plurality of linear grooves may be arranged not to be parallel to each other, and there may be at least two different distances between adjacent linear grooves.
  • the inner cross section of each first linear groove of the plurality of first linear grooves and each second linear groove of the plurality of second linear grooves may be Correspondingly, the outer cross section of the straight rod section is circular. More specifically, the inner width of each first linear groove of the plurality of first linear grooves and each second linear groove of the plurality of second linear grooves can be made The cross-sections are all semi-circles with equal radius, and the outer cross-section of the straight rod section is circular, and the radius is equal to the semi-circle. In this way, a very close fit between the straight rod section and the first straight groove and the second straight groove can be achieved.
  • the inner cross section of the first linear groove and the second linear groove may also be a part of an ellipse.
  • the outer cross section of the straight rod section is the same as that of the first straight groove.
  • the linear groove matches the second linear groove with an oval shape.
  • the shape of the inner cross-section of each linear groove may be different, or the same shape and size may be different, so that accommodating cavities of different shapes and/or sizes can be formed to match different outer cross-sectional shapes And/or the size of the straight section.
  • the first display module 10a may further include: a first frame, a first light source assembly 15a, a first optical film 16a, and a first liquid crystal screen 17a.
  • the first frame is arranged on a side of the first back plate 11a away from the second back plate 11b.
  • the first light source assembly 15a is arranged in the first frame and connected to the first back plate 11a.
  • the first optical film 16a is arranged in the first frame and is located on the side of the first light source assembly 15a away from the first back plate 11a.
  • the first liquid crystal screen 17a is arranged in the first frame and located on the side of the first optical film 16a away from the first back plate 11a.
  • the first frame may include a first outer frame 14a, a first middle frame 18a, and a first front frame 19a.
  • the first liquid crystal screen 17a is disposed between the first middle frame 18a and the first front frame 19a.
  • the first light source assembly 15a and the first optical film 16a are arranged on the inner side of the first outer frame 14a and the first middle frame 18a, and can provide a direct backlight for the first liquid crystal screen 17a.
  • the first back plate 11 a can absorb the heat generated by the first light source assembly 15 a and conduct the heat to the elongated member 20.
  • the second display module 10b may further include: a second frame, a second light source assembly 15b, a second optical film 16b, and a second liquid crystal screen 17b.
  • the second frame is arranged on a side of the second back plate 11 b away from the first back plate 11 a.
  • the second light source assembly 15b is arranged in the second frame and connected to the second back plate 11b.
  • the second optical film 16b is arranged in the second frame and is located on the side of the second light source assembly 15b away from the second back plate 11b.
  • the second liquid crystal screen 17b is disposed in the second frame and is located on the side of the second optical film 16b away from the second back plate 11b.
  • the second frame may include a second outer frame 14b, a second middle frame 18b, and a second front frame 19b.
  • the second liquid crystal screen 17b is disposed between the second middle frame 18b and the second front frame 19b.
  • the second light source assembly 15b and the second optical film 16b are arranged inside the second outer frame 14b and the second middle frame 18b, and can provide a direct backlight for the second liquid crystal panel 17b.
  • the second back plate 11b can absorb the heat generated by the second light source assembly 15b and conduct the heat to the elongated member 20.
  • Fig. 6 is a partial schematic diagram of the assembly structure of the first backplate, the second backplate, the first heat sink, the second heat sink with the cover, and the third heat sink in another embodiment of the display device of the present disclosure.
  • the second heat sink may further include a cover 33.
  • the cover 33 has at least one open end.
  • the inner side wall of the cover body 33 may at least partially cover the heat conducting block 31 and the heat dissipation fin group 32.
  • One or more first fans 40 may be configured to discharge the hot air gathered in the cover 33 to the outside through the open end of the cover. In this way, the heat emitted by the heat conducting block 31 and the heat dissipation fin group 32 is collected by the sleeve 33, and can be quickly discharged outward under the action of the first fan 40, thereby further improving the heat dissipation efficiency of the second heat sink.
  • the cover body 33 may have two open ends 33a and 33b opposite to each other.
  • the entirety of the first heat dissipation surface 31a and the entirety of the second heat dissipation surface 31b are distributed with a plurality of pin-shaped heat dissipation fins, and the cover 33 has four inner side walls which are connected to the heat conducting
  • the four side end surfaces of the block 31 are closely attached, and are integrally covered outside the plurality of pin-shaped radiating fins in the longitudinal direction of the pin-shaped radiating fins. It can be seen from FIG.
  • the cover 33 can block the heat conducting block 31 and the pin heat dissipation fins on both sides of the heat conducting block 31 in the length direction of the pin heat dissipation fins, thereby being able to gather heat to a greater extent.
  • the air outlet end of the first fan 40 may protrude outward relative to the open end of the cover 33 so as to output the collected heat to the outside of the cover 33.
  • the embodiments of the above-mentioned display device can be used in various electronic devices, such as light boxes and signboards for outdoor display.
  • Fig. 7 is a schematic diagram of the external structure of an embodiment of an electronic device according to the present disclosure.
  • Fig. 8 is a partial schematic diagram of the air outlet on the sky side to the air inlet on the ground side in the AA section of Fig. 7.
  • Fig. 9 is a partial enlarged schematic view of the assembly structure of the display device in the equipment housing of Fig. 8.
  • the electronic device includes: the aforementioned display device embodiment, the device housing 50 and the second fan 61.
  • the equipment housing 50 is enclosed outside the display device.
  • the second fan 61 is arranged in the equipment housing 50 and is located on the ground side of the first display module 10a and the second display module 10b of the display device.
  • the second heat sink 30 of the display device is located on the sky side of the first display module 10a and the second display module 10b.
  • a support frame 63 can be provided inside the equipment housing 50, and the display device can be installed and supported on the sky side of the support frame 63.
  • the second fan 61 may be fixedly connected under the support frame 63 through the fan mounting frame 62.
  • the support frame 63 can be fixedly connected to the equipment housing 50, and its cross section can be a hollow rectangle.
  • the second heat sink 30 includes a heat conducting block 31, a heat dissipation fin set 32, and a first fan 40 included in the third heat sink are all located on the top of the first display module 10a and the second display module 10b. side.
  • the second fan 61 can guide the relatively low-temperature air flow in the device housing 50 to flow through the display device to remove the heat generated by the display device.
  • the airflow flowing through the display device merges with the hot air drawn by the first fan 40 from the heat-conducting block 31 and the heat-radiating fin group 32 and then is discharged out of the equipment housing.
  • a transparent window 51 is provided at a position on the side wall of the device housing 50 corresponding to the first display module 10a and the second display module 10b of the display device. Keep a certain distance between 51 and the first display module 10a and the second display module 10b of the display device to ensure that there is a ventilation gap d between them.
  • the ventilation gaps on both sides are equal, so that the airflow passing through the first display module 10a and the second display module 10b is more uniform, and local temperature is not too high.
  • the second fan 61 can guide the air flow through the ventilation gap d and carry away the heat on the surface of the display screen of the display module.
  • the transparent window 51 may include a transparent glass or plastic plate fixed on the opening of the device housing 50 through a connecting member 53.
  • the connecting member 53 includes a bolt 53a and a nut 53b.
  • the transparent window 51 can be made of toughened glass, which has certain strength while transmitting light, so as to prevent damage to the devices inside the equipment housing 50 from being damaged under impact.
  • the fan mounting frame 62 can install two sets of second fans 61, which are respectively used for air cooling of the respective display screens of the first display module 10 a and the second display module 10 b.
  • Each group of second fans 61 may include at least one second fan 61.
  • the middle section of the fan mounting frame 62 can be fixedly connected to the lower surface of the support frame 63, and the extension sections on both sides of the middle section are respectively fixedly connected to the two sets of second fans 61 and extend obliquely toward the ground.
  • the air outlet ranges of the two sets of second fans 61 respectively point to the ventilation gap between the corresponding display module and the transparent window.
  • the equipment housing 50 may further include: an air inlet 52c, a first air outlet 52a, and a second air outlet 52b.
  • An air inlet 52c is opened on the side wall of the device housing 50 and the transparent window 51 corresponding to one of the first display module 10a and the second display module 10b, and is located on the second fan 51's ground side.
  • the air inlet 52c, the first air outlet 52a, and the second air outlet 52b may each include a plurality of slits, and an arc shield can also be provided on the outer wall of the equipment housing 50 corresponding to the upper edge of each slit to protect Dust or rainwater from the outside of the equipment housing 50 enters the inside of the equipment housing 50.
  • an interface 55 for connecting to a power source may be provided on the device housing 50.
  • the first air outlet 52a and the second air outlet 52b are respectively opened on the first and second side walls that are opposite and parallel to the device housing 50, and are both located on the first display module 10a and the second side wall.
  • the first side wall is on the same side as the transparent window corresponding to the first display module 10a
  • the second side wall is on the same side as the transparent window corresponding to the second display module 10b.
  • the end of the second heat sink located on the sky side is not higher than the lowest position of the first air outlet 52a and the second air outlet 52b on the ground side, respectively.
  • the air outside the equipment housing 50 can enter the inside of the equipment housing 50 from the air inlet 52c, and then pass through the second fan 51, the ventilation gap d and the first fan. Behind the sides of the two heat sinks, they are discharged from the first air outlet 52a and the second air outlet 52b. In this way, the cooler air from the outside can first take away the surface heat of the display screen of the display module through the ventilation gap, realize the air-cooling effect of the display screen, and at the same time perform the heat dissipation on the second heat sink that absorbs heat from the first heat sink. Wind-cooled.
  • the second heat dissipation element When the second heat dissipation element is air-cooled, the second heat dissipation element can continuously receive the heat conducted from the backplane of the display module via the first heat dissipation element, thereby realizing effective heat dissipation of the backplane.
  • the electronic device may further include a wind guide structure.
  • the air guiding structure is located on the side of the equipment housing adjacent to the first air outlet and/or the second air outlet, and is used to guide the airflow in the equipment housing through the first air outlet and/or the second air outlet Outside discharge.
  • the first air guide plate 64a and the second air guide plate 64b are respectively disposed in the equipment housing 50, located inside the first air outlet 52a and the second air outlet 52b, and are both located in the second
  • the sky side of the heat sink is used to guide the airflow in the equipment housing 50 to be discharged outward through the first air outlet 64a and the second air outlet 64b, respectively.
  • the first end of the first air deflector 64a on the sky side is connected to the inner wall of the first side wall, and the first end of the first air deflector 64a is higher than the first air outlet 52a in the sky.
  • the second end of the first air guide plate 64b located on the ground side is disposed at the center position between the first side wall and the second side wall.
  • the first end of the second air deflector 64b on the sky side is connected to the inner wall of the second side wall, and the first end of the second air deflector 64b is higher than the second air outlet 52b in the sky.
  • the second end of the second air guide plate 64b located on the ground side is arranged at the center position between the first side wall and the second side wall. In this way, the two airflows from the ground side and passing through the two ventilation gaps are respectively discharged to the first air outlet and the second air outlet after colliding with the surfaces of the first air deflector and the second air deflector.
  • the present disclosure also discloses an equipment mounting member for use with the display device of any of the foregoing embodiments.
  • the equipment installation component includes: an equipment housing 50 and a second fan 61.
  • the installation area of the display device can be arranged inside the equipment casing 50.
  • the second fan 61 may be arranged in the equipment housing and located on the ground side of the installation area of the display device.
  • the display device and the equipment mounting parts can be sold as separate products and assembled as required.
  • two opposite side walls of the equipment housing 50 are provided with two transparent windows 51 corresponding to the mounting area of the display device.
  • the two transparent windows 51 are parallel, and the spacing is greater than the width of the display device in a direction perpendicular to the two transparent windows 51.
  • the equipment housing of the equipment mounting member may further include: an air inlet 52c, a first air outlet 52a, and a second air outlet 52b.
  • the air inlet 52c is opened on the side wall on the same side of the device housing 50 and one of the two transparent windows, and is located on the ground side of the second fan 61.
  • the first air outlet 52a and the second air outlet 52b are respectively opened on the two side walls, and both are located on the sky side of the installation area of the display device.
  • the equipment mounting member may further include a first air deflector 64a and a second air deflector 64b.
  • the first air guide plate 64a and the second air guide plate 64b are respectively arranged in the equipment housing 50, located inside the first air outlet 52a and the second air outlet 52b, and are both located in the display device
  • the sky side of the installation area is used to guide the airflow in the equipment housing to be discharged outward through the first air outlet 52a and the second air outlet 52b.
  • the first end of the first air deflector 64a on the sky side and the first end of the second air deflector 64b on the sky side are respectively connected to the inner wall surfaces of the two side walls.
  • the first end of the first air guide plate 64a is higher than the highest position of the first air outlet 52a on the sky side.
  • the first end of the second air deflector 64b is higher than the highest position of the second air outlet 52b on the sky side.
  • the second end of the first wind deflector 64a on the ground side and the second end of the second wind deflector 64b on the ground side are both arranged in a central position between the two side walls.

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Abstract

本公开涉及一种显示装置、电子设备及设备安装件。显示装置包括：第一显示模组，具有第一背板；第二显示模组，具有位于所述第一背板对侧的第二背板；第一散热件，位于所述第一背板和所述第二背板之间；和第二散热件，与所述第一散热件导热连接。

Description

显示装置、电子设备及设备安装件 技术领域
本公开涉及一种显示装置、电子设备及设备安装件。
背景技术
在户外显示设备的运行过程中，显示设备所使用的显示模组发出的热量不能有效排出，可能降低显示设备的使用寿命。
发明内容
在本公开的一个方面，提供一种显示装置，包括：第一显示模组，具有第一背板；第二显示模组，具有位于所述第一背板对侧的第二背板；第一散热件，位于所述第一背板和所述第二背板之间；和第二散热件，与所述第一散热件导热连接。
在一些实施例中，所述第一散热件包括：第一散热部分，位于所述第一背板和所述第二背板之间，且在所述第一背板和所述第二背板的整个重叠区域分布；和第二散热部分，与所述第一散热部分一体制成，并延伸到所述第一背板和所述第二背板的重叠区域之外；其中，所述第二散热件位于所述第一显示模组和所述第二显示模组邻近所述第二散热部分的一侧，并与所述第二散热部分导热连接。
在一些实施例中，所述第二散热件包括：导热块，与所述第二散热部分连接；和散热翅片组，位于所述导热块的表面，并与所述导热块一体形成，或设置在所述导热块上。
在一些实施例中，所述导热块呈板状，具有四个侧端面和位于所述四个侧端面之间、并反向设置的第一散热表面和第二散热表面，所述第一散热表面与所述第一显示模组的显示屏平行，所述第二散热表面与所述第二显示模组的显示屏平行。
在一些实施例中，所述第一散热件包括多个细长件，所述多个细长件中的每个细长件包括作为所述第一散热部分的直杆段和作为第二散热部分的延伸段，所述导热块邻近所述延伸段的一侧的表面设有多个安装孔，所述多个细长件中各个细长件的延伸段分别插接固定在所述多个安装孔内。
在一些实施例中，所述导热块和所述散热翅片组的材质为金属。
在一些实施例中，所述导热块和所述散热翅片组的材质为铝。
在一些实施例中，所述显示装置还包括：第三散热件，设置在所述散热翅片组上，用于辅助所述导热块和所述散热翅片组进行散热。
在一些实施例中，所述散热翅片组包括沿所述第一散热表面和所述第二散热表面中至少一个散热表面的整体或局部分布的多个板型或针型散热翅片，所述第三散热件包括：一个或多个第一风扇，设置在所述多个板型或针型散热翅片上，并与所述导热块固定连接，用于对所述导热块和所述散热翅片组进行风冷。
在一些实施例中，所述第一散热表面的整体和所述第二散热表面的整体都分布有多个针型散热翅片，所述多个第一风扇包括设置在位于所述第一散热表面的针型散热翅片上，且沿平行于所述第一散热表面的方向间隔分布的至少两个轴流风扇和设置在位于所述第二散热表面的针型散热翅片上，且沿平行于所述第二散热表面的方向间隔分布的至少两个轴流风扇。
在一些实施例中，所述第一散热表面与所述第二散热表面平行，所述多个针型散热翅片相互平行，并与所述第一散热表面和所述第二散热表面均垂直，所述轴流风扇的进风端位于所述轴流风扇上邻近所述导热块的一侧，所述轴流风扇的出风端位于所述轴流风扇上远离所述导热块的一侧，所述轴流风扇的转动轴线与所述多个针型散热翅片平行。
在一些实施例中，所述多个针型散热翅片中位于所述轴流风扇的设置区域的针型散热翅片的长度短于比所述多个针型散热翅片中位于所述轴流风扇的设置区域周边的针型散热翅片的长度，以形成安装所述轴流风扇的凹入结构。
在一些实施例中，所述轴流风扇的出风端相对于所述多个针型散热翅片中位于所述轴流风扇的设置区域周边的针型散热翅片向出风侧凸出。
在一些实施例中，所述第二散热件还包括：罩体，具有至少一个敞口端；其中，所述罩体的内侧壁至少部分地罩设所述导热块和所述散热翅片组，所述一个或多个第一风扇被配置为将所述罩体内聚拢的热空气经由所述罩体的敞口端向外排出。
在一些实施例中，所述罩体具有两个位置相对的敞口端，所述第一散热表面的整体和所述第二散热表面的整体都分布有多个针型散热翅片，所述罩体具有四个内侧壁，分别与所述导热块的四个侧端面紧密贴合，并在所述针型散热翅片的长度方向整体罩设在所述多个针型散热翅片的外部。
在一些实施例中，所述第一背板上邻近所述第二背板的一侧设有多个第一直线型细长凹槽，所述第二背板上邻近所述第一背板的一侧设有多个第二直线型细长凹槽， 所述多个第二直线型细长凹槽与所述多个第一直线型细长凹槽一一对应，并与所述多个第一直线型细长凹槽围成多个直线型容纳腔，所述多个细长件的直杆段分别位于所述多个直线型容纳腔中。
在本公开的一个方面，提供一种电子设备，包括前述的显示装置。
在一些实施例中，所述电子设备还包括：设备外壳，围设在所述显示装置外；和第二风扇，设置在所述设备外壳内，并位于所述显示装置的第一显示模组和第二显示模组的地侧；其中，所述显示装置的第二散热件位于所述第一显示模组和所述第二显示模组的天侧。
在一些实施例中，在所述设备外壳的侧壁对应于所述显示装置的第一显示模组和第二显示模组的位置设有透明窗口，所述透明窗口与所述显示装置的第一显示模组和第二显示模组之间均设有相等的通风间隙。
在一些实施例中，所述设备外壳还包括：一个进风口，开设在所述设备外壳与所述第一显示模组和所述第二显示模组之一对应的透明窗口同侧的侧壁上，且位于所述第二风扇的地侧；第一排风口和第二排风口，分别开设在所述设备外壳的相对且平行的第一侧壁和第二侧壁上，且均位于所述第一显示模组和所述第二显示模组的天侧，所述第一侧壁与所述第一显示模组对应的透明窗口同侧，所述第二侧壁与所述第二显示模组对应的透明窗口同侧；其中，所述第二散热件位于天侧的端部不高于所述第一排风口和第二排风口分别在地侧的最低位置。
在一些实施例中，所述电子设备还包括：第一导风板和第二导风板，分别设置在所述设备外壳内位于所述第一排风口和所述第二排风口的内侧，且均位于所述第二散热件的天侧，用于引导所述设备外壳内的气流分别经所述第一排风口和所述第二排风口向外排出；其中，所述第一导风板位于天侧的第一端连接在所述第一侧壁的内壁面上，所述第一导风板的第一端高于所述第一排风口在天侧的最高位置，所述第一导风板位于地侧的第二端设置在所述第一侧壁与所述第二侧壁之间的中心位置；所述第二导风板位于天侧的第一端连接在所述第二侧壁的内壁面上，所述第二导风板的第一端高于所述第二排风口在天侧的最高位置，所述第二导风板位于地侧的第二端设置在所述第一侧壁与所述第二侧壁之间的中心位置。
在本公开的一个方面，提供一种设备安装件，用于与前述的显示装置配合使用，其中，所述设备安装件包括：设备外壳，内部设有所述显示装置的安装区域；和第二风扇，设置在所述设备外壳内，并位于所述显示装置的安装区域的地侧。
在一些实施例中，在所述设备外壳相对的两个侧壁对应于所述显示装置的安装区域设有两个透明窗口，所述两个透明窗口平行，且间距大于所述显示装置在垂直于所述两个透明窗口的方向的宽度。
在一些实施例中，所述设备外壳还包括：一个进风口，开设在所述设备外壳与所述两个透明窗口中的一个透明窗口同侧的侧壁上，且位于所述第二风扇的地侧；第一排风口和第二排风口，分别开设在所述两个侧壁上，且均位于所述显示装置的安装区域的天侧。
在一些实施例中，所述设备安装件还包括：第一导风板和第二导风板，分别设置在所述设备外壳内位于所述第一排风口和所述第二排风口的内侧，且均位于所述显示装置的安装区域的天侧，用于引导所述设备外壳内的气流分别经所述第一排风口和所述第二排风口向外排出；其中，所述第一导风板位于天侧的第一端和所述第二导风板位于天侧的第一端分别连接在所述两个侧壁的内壁面上，所述第一导风板的第一端高于所述第一排风口在天侧的最高位置，所述第二导风板的第一端高于所述第二排风口在天侧的最高位置，所述第一导风板位于地侧的第二端和所述第二导风板位于地侧的第二端均设置在所述两个侧壁之间的中心位置。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1是根据本公开显示装置的一个实施例中第一背板、第一散热件和第二背板的结构爆炸图；
图2是图1中标识A所对应的第二背板靠近第一散热件一侧的部分结构的局部放大示意图；
图3是沿与细长件长度方向的垂直方向在根据本公开显示装置的一个实施例截取的截面结构的局部示意图；
图4是根据本公开显示装置的一个实施例中第一散热件、第二散热件和第三散热件的装配结构的局部示意图；
图5是根据本公开显示装置的一个实施例中第一背板、第二背板、第一散热件、第二散热件和第三散热件的装配结构的局部示意图；
图6是根据本公开显示装置的另一个实施例中第一背板、第二背板、第一散热件、具有罩体的第二散热件和第三散热件的装配结构的局部示意图；
图7是根据本公开电子设备的一个实施例的外部结构示意图；
图8是图7中AA截面中从天侧的出风口到地侧的进风口的局部示意图；
图9是图8中显示装置在设备外壳内的装配结构的局部放大示意图。
应当明白，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。此外，相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。对示例性实施例的描述仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现，不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整，并且向本领域技术人员充分表达本公开的范围。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、材料的组分、数字表达式和数值应被解释为仅仅是示例性的，而不是作为限制。
本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的部分。“包括”或者“包含”等类似的词语意指在该词前的要素涵盖在该词后列举的要素，并不排除也涵盖其他要素的可能。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在本公开中，当描述到特定器件位于第一器件和第二器件之间时，在该特定器件与第一器件或第二器件之间可以存在居间器件，也可以不存在居间器件。当描述到特定器件连接其它器件时，该特定器件可以与所述其它器件直接连接而不具有居间器件，也可以不与所述其它器件直接连接而具有居间器件。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同，除非另外特别定义。还应当理解，在诸如通用字典中定义的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
当显示设备所在的环境温度较高时(例如在夏天炎热的天气里，户外温度可能到达40°或以上，而且在太阳的直射下显示模组表面的温度会快速上升)。另外，一些显示模组的背板邻近发热量较大的光源组件，长时间使用会导致显示模组内部温度过高，从而影响元器件的使用寿命。
有鉴于此，本公开实施例提供一种显示装置、电子设备及设备安装件，能够改善显示模组的散热效果。
本申请实施例提供的显示装置可以包括单面显示屏(即在单方向进行显示的显示屏，下面简称单屏)或双面显示屏(即在相反的两个方向进行显示的显示屏，下面简称双屏)。单屏可以为单一的显示屏，也可以包括由多个显示屏沿垂直于显示屏的显示方向的平面进行相邻拼接得到的拼接屏。双屏中的任一个显示屏可以是单一的显示屏，也可以包括由多个显示屏拼接所得的拼接屏。在本公开中，显示屏也称为显示模组，双屏即为两个显示模组的组合。显示屏的类型不限，可以是液晶显示屏、有机发光二极管显示屏或量子点显示屏等。
下面首先将以双屏为例对本公开的显示装置实施例进行说明。
图1是根据本公开显示装置的一个实施例中第一背板、第一散热件和第二背板的结构爆炸图。图2是图1中标识A所对应的第二背板靠近第一散热件一侧的部分结构的局部放大示意图。图3是沿与细长件长度方向的垂直方向在根据本公开显示装置的一个实施例截取的截面结构的局部示意图。图4是根据本公开显示装置的一个实施例中第一散热件、第二散热件和第三散热件的装配结构的局部示意图。图5是根据本公开显示装置的一个实施例中第一背板、第二背板、第一散热件、第二散热件和第三散热件的装配结构的局部示意图。
参考图1-图5，在一些实施例中，显示装置包括：第一显示模组10a、第二显示模组10b、第一散热件和第二散热件30。第一显示模组10a具有第一背板11a。第二显示模组10b具有位于所述第一背板11a对侧的第二背板11b。第一散热件位于所述第一背板11a和所述第二背板11b之间。第一散热件可以将第一背板11a和第二背板11b的热量向第二散热件30传递，以实现第一背板11a和第二背板11b的散热。
在一些实施方式中，第一散热件位于所述第一背板11a和所述第二背板11b之间，分别与所述第一背板11a和所述第二背板11b导热连接，实现热量传导。
示例的，所述导热连接为第一散热件与第一背板和/或第二背板直接接触连接，或第一散热件通过其他部件与第一背板和/或第二背板连接，实现热量传导。
本申请中其他实施例中的导热连接可以是直接接触连接，也可以是通过其他部件连接。
在图1中，第一背板11a位于最上方，第二背板11b位于最下方，而第一散热件位于第一背板11a和第二背板11b之间。当进行第一散热件装配时，可将第一背板11a、第一散热件和第二背板11b按照图1的排列顺序依次进行装配。第一背板11a和第二背板11b紧邻且相对设置，使得第一显示模组10a和第二显示模组10b的两个显示侧朝向相反的两个方向。
第一背板11a和第二背板11b的材料可采用易于导热的材料，例如铝、铜等金属，或金属合金等。根据显示模组的前述结构形式，第一背板11a和第二背板11b可以为单一显示屏的背板、组成拼接屏的多个显示屏各自的独立背板或者共用背板。
在本实施例中，通过将第一显示模组和第二显示模组的背板相对设置，并将第一散热件设置在第一背板和第二背板之间，可使得第一背板和第二背板的热量传导给第一散热件，再通过与第一散热件连接的第二散热件，这样就将显示模组内部产生的大量热量得以通过第一散热件和第二散热件向外部释放，从而有效地降低显示模组内部温度，改善显示模组的散热效果，提高显示装置的使用寿命。
在一些实施例中，第一显示模组10a与第二显示模组10b的形状可以不相同或相同，第一显示模组10a与第二显示模组10b的尺寸可以不相同或相同，以便相应满足显示装置的相反两侧的显示需求。在一些可选实施例中，第一显示模组10a和第二显示模组10b的形状均为长方体，且尺寸(例如整体长度、宽度和厚度)均相同，这样可增加显示模组的互换性，方便维修和更换。
参考图1和图2，在一些实施例中，第一背板11a和第二背板11b中任意一个可设置多种功能孔，例如贯穿设置在背板表面的、用于配合螺钉对两个背板的相对位置进行固定连接的连接孔12a、设置在背板远离第一散热件一侧的表面上、用于配合定位销对背板在显示模组内进行安装定位的定位孔12b、设置在背板远离第一散热件一侧的表面上、用于安装光源组件的安装孔或安装槽12c以及设置在背板的侧端面、用于将背板与显示模组外部的其他结构进行固定的固定孔12d等。
参考图1-图5，在一些实施例中，第一散热件包括一个细长件或多个细长件20。细长件可以为直线形细长件，或者呈折线形、波浪形或螺旋形的细长件。细长件的长度远大于细长件的截面宽度或直径。在另一些实施例中，第一散热件还可以包括一个细长件。在另一些实施例中，第一散热件可以呈平板形，平板形的第一散热件的长度 或宽度远大于第一散热件的厚度。
对于包括细长件的第一散热件来说，细长件20可采用由易于导热的材料(例如铜或铝等金属等)制成的实心杆件或空心管。在一些实施例中，细长件20可以包括热管，能够实现非常高的导热性能。进一步地，热管可包括管壁材质为金属的重力热管。重力热管可包括内部抽成真空的封闭管，管壁材质可以为具有良好导热性能的铜。在封闭管内部设置工作介质，例如水、丙酮或萘等。真空管沿长度方向可至少划分为蒸发段和冷凝段，蒸发段的液态工作介质在吸热后发生相变而蒸发为气态工作介质，气态工作介质运动到冷凝段放热，并相变为液态工作介质。液态工作介质能够在重力作用下流回到蒸发段，从而实现散热循环。在另一些实施例中，热管也可以包括其他形式的热管，例如内部设有吸液芯的有芯热管等。
为了将热量从背板向外排出，在一些实施例中，第一散热件可包括第一散热部分和第二散热部分。第一散热部分位于所述第一背板和所述第二背板之间，且在所述第一背板和所述第二背板的整个重叠区域分布。第一背板与第二背板的重叠区域是指在背板的垂直方向的视角下第一背板与第二背板相互重叠的区域。第二散热部分与所述第一散热部分一体制成，并延伸到所述第一背板和所述第二背板的重叠区域之外。所述第二散热件位于所述第一显示模组和所述第二显示模组邻近所述第二散热部分的一侧，并与所述第二散热部分导热连接。
参考图4和图5，在一些实施例中，多个细长件20中的每个细长件20包括作为所述第一散热部分的直杆段20a和作为第二散热部分的延伸段20b。第二散热件30可以包括导热块31和散热翅片组32。导热块31可以与第一散热件的第二散热部分连接，例如与多个细长件20中各个细长件20的延伸段20b连接。在另一些实施例中，第二散热件30还可以包括电驱动的半导体制冷器，半导体制冷器商也可以设置增加散热面积的多个翅片。
在图4中，散热翅片组32位于所述导热块31的表面，并与所述导热块31一体形成。在另一些实施例中，散热翅片组32可通过粘接、焊接或插接等固定连接方式设置在所述导热块的表面。散热翅片组32可增加导热块31的散热面积，提高散热效率。另外，为了获得较好的散热效果，导热块和所述散热翅片组的材质可为金属，例如导热块和所述散热翅片组的材质为导热性能良好且重量轻的铝。
在图5中，导热块31呈板状，具有四个侧端面。导热块31还包括位于所述四个侧端面之间、并反向设置的第一散热表面31a和第二散热表面31b。第一散热表面31a 与所述第一显示模组10a的显示屏平行，第二散热表面31b与所述第二显示模组10b的显示屏平行。考虑到第二散热件30周围的空气会被导热块31及散热翅片组32加热，且热空气会上升，因此可将导热块31设置在第一显示模组10a和第二显示模组10b的天侧，以免第二散热件30周围的热空气向上流动到显示模组周围时影响显示模组的散热，提高显示模组的温度。
当显示装置使用状态时存在上下左右四个端。本申请所述的天侧为上端，地侧为下端。
所述导热块31邻近所述延伸段20b的一侧的表面设有多个安装孔31c。所述多个细长件20中各个细长件20的延伸段20b分别插接固定在所述多个安装孔31c内。安装孔31c可以为盲孔或通孔，且与延伸段20b可采用间隙配合，以方便拆卸，例如使安装孔31c的孔径大于延伸段20b的直径0.6mm。在另一些实施例中，也可以使延伸段20b与安装孔31c过盈配合，以使两者的连接更加可靠。
参考图4和图5，在一些实施例中，散热翅片组32包括沿第一散热表面31a和第二散热表面31b中至少一个散热表面的整体或局部分布的多个板型或针型散热翅片。多个板型或针型散热翅片在散热表面上可以按照随机或阵列方式进行排布。翅片相对于散热表面的高度可以大于两个散热表面的间距(即导热体31在垂直于散热表面方向上的厚度)，以尽量增加第二散热件30的散热面积。
为了提高第二散热件的散热效率，在一些实施例中，显示装置还包括第三散热件。第三散热件可安装在所述第二散热件上，用于辅助所述导热块和所述散热翅片组进行散热。在另一些实施例中，第三散热件也可以安装在第二散热件外，即不直接与第二散热件连接或接触。以第三散热件包括第一风扇为例，第一风扇可以固定安装在第二散热件的表面，也可以设置在与第二散热件有一定间距的位置，通过输出的冷气流对第二散热件进行风冷散热。通过第三散热件的辅助，第二散热件实现了主动式散热。第三散热件不限于通过风冷辅助第二散热件散热，还可以通过水冷等其他主动散热方式。在另一些实施例中，也可以不设置第三散热件而采用第二散热件的热量被动散发到周围空气中的方式，这样可以减少能源消耗，降低成本。
参考图4和图5，在一些实施例中，所述第三散热件包括一个或多个第一风扇40。为了方便观察第一风扇与散热翅片的相对位置关系，第一风扇40的转轴及叶片等部件未在图中示出，一个或多个第一风扇40设置在所述多个板型或针型散热翅片上，并与所述导热块31固定连接，用于对所述导热块31和所述散热翅片组32进行风冷。 在图5中，第一散热表面31a的整体和所述第二散热表面31b的整体都分布有多个针型散热翅片。所述多个第一风扇40包括设置在位于所述第一散热表面31a的针型散热翅片上，且沿平行于所述第一散热表面31a的方向间隔分布的至少两个轴流风扇和设置在位于所述第二散热表面31b的针型散热翅片上，且沿平行于所述第二散热表面31b的方向间隔分布的至少两个轴流风扇。通过在导热块31的两个散热表面上整体分布多个针型散热翅片，可以极大程度地提高第二散热件的散热面积，提升散热效率。而在每个散热表面设置至少两个轴流风扇，可以使更多的翅片在风冷的作用下降低温度。在另一些实施例中，第一风扇40也可以包括其他类型的风扇，例如径流风扇、离心风扇等。
参考图5，在一些实施例中，所述第一散热表面与所述第二散热表面平行，所述多个针型散热翅片相互平行，并与所述第一散热表面和所述第二散热表面均垂直，所述轴流风扇的进风端可位于所述轴流风扇上邻近所述导热块的一侧，而所述轴流风扇的出风端位于所述轴流风扇上远离所述导热块的一侧。所述轴流风扇的转动轴线与所述多个针型散热翅片平行。轴流风扇可将多个针型散热翅片之间以及导热块的散热表面的热空气向外抽出，以降低第二散热件的温度。
当第一显示模组10a和第二显示模组10b的显示屏表面有冷却气流流过时，当冷却气流流动到轴流风扇的附近时，能够与轴流风扇40排出的热气流汇合并向外排出，以加速轴流风扇的热气流的循环，提高散热效率。另外，可使导热块31两侧散热表面及分别设置在两侧散热表面的散热翅片对称，从而使导热块两侧的散热更加均匀。通过使所述多个针型散热翅片相互平行，且轴流风扇的转动轴线41与所述多个针型散热翅片平行，可使得散热翅片组内外之间的气流流动更加顺畅，有利于散热翅片之间的热空气以最短路径向外排出。
在另一些实施例中，也可以将轴流风扇的进风端设置在所述轴流风扇上远离所述导热块的一侧，并将所述轴流风扇的出风端设置在所述轴流风扇上邻近所述导热块的一侧，这样可以将第二散热件外侧较冷的空气吹向针型散热翅片之间以及导热块的散热表面，来实现第二散热件的温度。
为了减小轴流风扇安装在针型散热翅片后占用的整体空间，参考图5，可使多个针型散热翅片中位于所述轴流风扇的设置区域的针型散热翅片的长度短于比所述多个针型散热翅片中位于所述轴流风扇的设置区域周边的针型散热翅片的长度，以形成安装所述轴流风扇的凹入结构。换句话说，使得轴流风扇与针型散热翅片分别在导热 块的散热表面的垂直方向的厚度存在一定的重合，通过这种厚度重合可以减少该厚度方向上的空间占用。
轴流风扇在嵌入在凹入结构之后，并可通过连接件(例如螺钉或卡扣)与散热翅片组32或导热块31进行固定连接。散热翅片组32或导热块31上可预留与连接件进行连接的连接结构，例如螺纹孔或卡槽等。这样除了能够减小第二散热件和第三散热件整体的空间占用，还使得轴流风扇不容易在垂直于轴流风扇的转动轴线41的平面内发生错移，从而在安装上更加稳固。
在图5中，可使得所述轴流风扇的出风端相对于所述多个针型散热翅片中位于所述轴流风扇的设置区域周边的针型散热翅片向出风侧凸出。这样进风端位于多个针型散热翅片之间，而出风端位于多个针型散热翅片的外侧，使得轴流风扇可有效地将针型散热翅片和散热表面的热空气从出风端向外排出，提高散热效果。
参考图3，在一些实施例中，在所述第一背板11a上邻近所述第二背板11b的一侧设有多个第一直线型细长凹槽13a，在所述第二背板11b上邻近所述第一背板11a的一侧设有多个第二直线型细长凹槽13b。所述多个第二直线型细长凹槽13b与所述多个第一直线型细长凹槽13a一一对应，并与所述多个第一直线型细长凹槽13a围成多个直线型容纳腔13c，所述多个细长件20的直杆段分别位于所述多个直线型容纳腔中。
通过将细长件的直杆段设置在第一直线型细长凹槽和第二直线型细长凹槽围成的直线型容纳腔，可有效地固定细长件在第一背板和第二背板之间的位置，并使得组合后的结构更加紧凑，占用空间更小。而且，细长件与细长凹槽的配合结构更加简单，且易于加工。直线型容纳腔可套设在细长件的直杆段的周向外侧，并与细长件的直杆段轮廓至少部分接触，以实现热传导。为了提高第一直线型细长凹槽和第二直线型细长凹槽与直杆段之间的热传导效果，可使得直线型容纳腔的内壁的截面与直杆段对应位置的外壁的截面的形状相同，且两者尺寸上满足过渡或过盈配合关系，以便直线型容纳腔能够与直杆段的表面较紧密地贴合。
在另一些实施例中，第一背板和第二背板上可设置与细长件的数量和形状相匹配的细长凹槽，例如设置折线形、波浪形或螺旋形的细长凹槽，以匹配折线形、波浪形或螺旋形的细长件。
参考图1中的坐标系，第一背板11a和第二背板11b均具有四个侧端面(分别沿x轴方向和y轴方向)，以及位于所述四个侧端面之间、并反向设置的内表面和外表 面(沿z轴方向)。四个侧端面包括分别对应于所述显示装置的天侧和地侧的第一侧端面(位于沿x轴方向的上游)和第二侧端面(位于沿x轴方向的下游)。
多个第一直线型凹槽位于所述第一背板11a的外表面上，并从所述第一背板11a的第一侧端面延伸到所述第一背板11a的第二侧端面。多个第一直线型凹槽在第一背板11a的外表面沿y轴依次排布，例如从第一背板11a的第三侧端面(位于沿y轴的上游)到第一背板11a的第四侧端面(位于沿y轴的下游)平行且等间距地排布多个第一直线型凹槽。
多个第二直线型凹槽位于所述第二背板11b的外表面上，并从所述第二背板11b的第一侧端面延伸到所述第二背板11b的第二侧端面。多个第二直线型凹槽在第二背板11b的外表面也沿y轴依次排布，且各个第二直线型凹槽可相互平行且间距均与所述多个第一直线型凹槽的间距相同，以便多个第二直线型凹槽能够分别与第一直线型凹槽一一对齐。
多个细长件20的直杆段从所述第二背板11b的第一侧端面延伸到所述第二背板11b的第二侧端面。细长件20的直杆段可以设置在每个第一直线型凹槽和第二直线型凹槽所围成的直线型容纳腔中，也可以沿y轴间隔地在多个直线型容纳腔中设置。
通过使直线型凹槽从背板的第一侧端面延伸到第二侧端面，可使得细长件通过直线型凹槽与背板进行更大范围的热交换，实现更大面积的散热。而通过将多个直线型凹槽平行且以相同间距在背板的外表面进行布置，可使得背板与多个细长件之间的热交换更加均匀，使得背板的散热更加均衡，降低局部过热的风险。
在另一些实施例中，根据背板不同部位的发热差异，还可以将多个直线型凹槽设置成不相互平行，相邻的多个直线型凹槽可存在至少两种不同的间距。
参考图3，多个第一直线型凹槽的每个第一直线型凹槽和所述多个第二直线型凹槽的每个第二直线型凹槽的内横截面均可为圆形的一部分，相应地，所述直杆段的外横截面为圆形。更具体地，可使得所述多个第一直线型凹槽的每个第一直线型凹槽和所述多个第二直线型凹槽的每个第二直线型凹槽的内横截面均为等半径的半圆，所述直杆段的外横截面为圆形，且与所述半圆的半径相等。这样可使得直杆段与第一直线型凹槽和第二直线型凹槽之间非常紧密的贴合。在另一些实施例中，第一直线型凹槽和第二直线型凹槽的内横截面也可以为椭圆形的一部分，相应地，所述直杆段的外横截面为与第一直线型凹槽和第二直线型凹槽配合的椭圆形。
在另一些实施例中，各个直线型凹槽的内横截面的形状可以不相同，或者形状相 同尺寸不同，这样可以形成不同形状和/或不同尺寸的容纳腔，以匹配不同的外横截面形状和/或尺寸的直杆段。
参考图3，在一些实施例中，第一显示模组10a还可以包括：第一框架、第一光源组件15a、第一光学膜片16a和第一液晶屏17a。第一框架设置在所述第一背板11a远离所述第二背板11b的一侧。第一光源组件15a设置在所述第一框架内，且与所述第一背板11a连接。第一光学膜片16a设置在所述第一框架内，并位于所述第一光源组件15a远离所述第一背板11a的一侧。第一液晶屏17a设置在所述第一框架内，并位于所述第一光学膜片16a远离所述第一背板11a的一侧。
在图3中，第一框架可以包括第一外框14a、第一中框18a和第一前框19a。第一液晶屏17a设置在第一中框18a和第一前框19a之间。第一光源组件15a和第一光学膜片16a设置在第一外框14a和第一中框18a的内侧，能够为第一液晶屏17a提供直下式背光。而第一背板11a可以吸收第一光源组件15a产生的热量，并将热量传导给细长件20。
同理，参考图3，在一些实施例中，第二显示模组10b还可以包括：第二框架、第二光源组件15b、第二光学膜片16b和第二液晶屏17b。第二框架设置在所述第二背板11b远离所述第一背板11a的一侧。第二光源组件15b设置在所述第二框架内，且与所述第二背板11b连接。第二光学膜片16b设置在所述第二框架内，并位于所述第二光源组件15b远离所述第二背板11b的一侧。第二液晶屏17b设置在所述第二框架内，并位于所述第二光学膜片16b远离所述第二背板11b的一侧。
在图3中，第二框架可以包括第二外框14b、第二中框18b和第二前框19b。第二液晶屏17b设置在第二中框18b和第二前框19b之间。第二光源组件15b和第二光学膜片16b设置在第二外框14b和第二中框18b的内侧，能够为第二液晶屏17b提供直下式背光。而第二背板11b可以吸收第二光源组件15b产生的热量，并将热量传导给细长件20。
图6是根据本公开显示装置的另一个实施例中第一背板、第二背板、第一散热件、具有罩体的第二散热件和第三散热件的装配结构的局部示意图。
参考图6，在一些实施例中，第二散热件还可以包括罩体33。罩体33具有至少一个敞口端。罩体33的内侧壁可至少部分地罩设所述导热块31和所述散热翅片组32。一个或多个第一风扇40可被配置为将所述罩体33内聚拢的热空气经由所述罩体的敞口端向外排出。这样通过套筒33聚集导热块31和散热翅片组32所发出的热量，可 在第一风扇40的作用下快速向外排出，从而进一步提高第二散热件的散热效率。
在图6中，罩体33可具有两个位置相对的敞口端33a和33b。参考图5，所述第一散热表面31a的整体和所述第二散热表面31b的整体都分布有多个针型散热翅片，所述罩体33具有四个内侧壁，分别与所述导热块31的四个侧端面紧密贴合，并在所述针型散热翅片的长度方向整体罩设在所述多个针型散热翅片的外部。从图6中可以看到，罩体33在针型散热翅片的长度方向能够遮挡住导热块31和导热块31两侧的针型散热翅片，从而能够更大程度地聚集热量。第一风扇40的出风端可以相对于罩体33的敞口端向外凸出，以便将聚集的热量向罩体33的外侧输出。
上述显示装置的实施例可用于各类电子设备，例如室外展示用的灯箱、标识牌等。
图7是根据本公开电子设备的一个实施例的外部结构示意图。图8是图7中AA截面中从天侧的出风口到地侧的进风口的局部示意图。图9是图8中显示装置在设备外壳内的装配结构的局部放大示意图。
参考图7和图8，在一些实施例中，电子设备包括：前述的显示装置实施例、设备外壳50和第二风扇61。设备外壳50围设在所述显示装置外。第二风扇61设置在所述设备外壳50内，并位于所述显示装置的第一显示模组10a和第二显示模组10b的地侧。显示装置的第二散热件30位于所述第一显示模组10a和所述第二显示模组10b的天侧。在图8中，可以在设备外壳50内部设置支撑架63，并将显示装置安装和支撑在支撑架63的天侧。第二风扇61可以通过风扇安装架62固定连接在支撑架63的下方。支撑架63可与设备外壳50固定连接，其横截面可以为空心矩形。
在图8中，第二散热件30包括导热块31、散热翅片组32和第三散热件包括的第一风扇40均位于第一显示模组10a和所述第二显示模组10b的天侧。第二风扇61可引导设备外壳50内温度相对较低的气流流过显示装置，以带走显示装置所产生的热量。流过显示装置的气流与第一风扇40从导热块31和散热翅片组32中抽出的热空气汇合后向设备外壳之外排出。
在图7和图9中，在所述设备外壳50的侧壁对应于所述显示装置的第一显示模组10a和第二显示模组的10b的位置设有透明窗口51，所述透明窗口51与所述显示装置的第一显示模组10a和第二显示模组10b之间保持一定距离，保证二者之间存在通风间隙d。在一些实施例中，两侧的通风间隙相等，以使得经过第一显示模组10a和第二显示模组10b的气流更均匀，避免局部温度过高。
第二风扇61可引导气流从通风间隙d流过，并携带走显示模组的显示屏表面的 热量。透明窗口51可包括通过连接件53固定在设备外壳50上开设的开口上的透明玻璃或塑料板。在图9中，连接件53包括螺栓53a和螺母53b。透明窗口51可采用钢化玻璃，在透光的同时具备一定的强度，防止在受冲击下破坏而影响设备外壳50内部的器件。
参考图8，风扇安装架62可以安装两组第二风扇61，分别用于第一显示模组10a和第二显示模组10b各自的显示屏的风冷作用。每组第二风扇61可以包括至少一个第二风扇61。风扇安装架62的中间段可固定连接在支撑架63的下侧表面，位于中间段两侧的外伸段分别与两组第二风扇61固定连接，并向地侧倾斜延伸。相应地，两组第二风扇61的出风范围分别指向对应的显示模组与透明窗口之间的通风间隙。
在图8中，设备外壳50还可包括：一个进风口52c、第一排风口52a和第二排风口52b。一个进风口52c开设在所述设备外壳50与所述第一显示模组10a和所述第二显示模组10b之一对应的透明窗口51同侧的侧壁上，且位于所述第二风扇51的地侧。进风口52c、第一排风口52a和第二排风口52b均可包括多个狭缝，在设备外壳50的外壁对应于每个狭缝的上边缘还可以设置弧形遮挡罩，以防护设备外壳50的外部的尘土或雨水进入设备外壳50的内部。另外，设备外壳50上还可以设置用于连接电源的接口55。
第一排风口52a和第二排风口52b分别开设在所述设备外壳50的相对且平行的第一侧壁和第二侧壁上，且均位于所述第一显示模组10a和所述第二显示模组10b的天侧。所述第一侧壁与所述第一显示模组10a对应的透明窗口同侧，所述第二侧壁与所述第二显示模组10b对应的透明窗口同侧。第二散热件位于天侧的端部不高于所述第一排风口52a和第二排风口52b分别在地侧的最低位置。
参考图8中的箭头所指气流方向，在第二风扇61的驱动下，设备外壳50外部的空气可以从进风口52c进入设备外壳50的内部，再经由第二风扇51、通风间隙d和第二散热件的侧方后，从第一排风口52a和第二排风口52b向外排出。这样，来自外部的较冷空气可以先经过通风间隙向上带走显示模组的显示屏的表面热量，实现显示屏的风冷作用，并同时对从第一散热件吸收热量的第二散热件进行风冷。在第二散热件被风冷的过程中，第二散热件可以不断地经由第一散热件接收来自显示模组的背板所传导的热量，从而实现背板的有效散热。
参考图8，在一些实施例中，电子设备还可以包括导风结构。导风结构位于设备外壳内邻近第一排风口和/或第二排风口的一侧，用于引导所述设备外壳内的气流经第 一排风口和/或第二排风口向外排出。在图8中，第一导风板64a和第二导风板64b。第一导风板64a和第二导风板64b分别设置在所述设备外壳50内位于所述第一排风口52a和所述第二排风口52b的内侧，且均位于所述第二散热件的天侧，用于引导所述设备外壳50内的气流分别经所述第一排风口64a和所述第二排风口64b向外排出。
第一导风板64a位于天侧的第一端连接在所述第一侧壁的内壁面上，所述第一导风板64a的第一端高于所述第一排风口52a在天侧的最高位置。所述第一导风板64b位于地侧的第二端设置在所述第一侧壁与所述第二侧壁之间的中心位置。第二导风板64b位于天侧的第一端连接在所述第二侧壁的内壁面上，所述第二导风板64b的第一端高于所述第二排风口52b在天侧的最高位置。所述第二导风板64b位于地侧的第二端设置在所述第一侧壁与所述第二侧壁之间的中心位置。这样可使得来自地侧且分别经过两个通风间隙的两股气流在碰撞第一导风板和第二导风板的表面后分别向第一排风口和第二排风口排出，从而实现合理的冷却气流流动路径。
基于前述的显示装置实施例，本公开还公开了一种设备安装件，用于与前述任一实施例的显示装置配合使用。参考图7-图9，设备安装件包括：设备外壳50和第二风扇61。设备外壳50内部可设置所述显示装置的安装区域。第二风扇61可设置在所述设备外壳内，并位于所述显示装置的安装区域的地侧。显示装置和设备安装件可以分别作为独立产品进行销售，并根据需要进行组装。
在上述设备安装件的另一个实施例中，所述设备外壳50相对的两个侧壁对应于所述显示装置的安装区域设有两个透明窗口51。两个透明窗口51平行，且间距大于所述显示装置在垂直于所述两个透明窗口51的方向的宽度。这样，在将显示装置安装到设备外壳50内的安装区域后，可使得显示装置的两个显示屏分别与两个透明窗口51之间形成通风间隙。
参考图8，设备安装件的设备外壳还可包括：一个进风口52c、第一排风口52a和第二排风口52b。进风口52c开设在所述设备外壳50与所述两个透明窗口中的一个透明窗口同侧的侧壁上，且位于所述第二风扇61的地侧。第一排风口52a和第二排风口52b分别开设在所述两个侧壁上，且均位于所述显示装置的安装区域的天侧。
为了引导设备外壳50内部的空气流动，参考图8，在一些实施例中，设备安装件还可包括第一导风板64a和第二导风板64b。第一导风板64a和第二导风板64b分别设置在所述设备外壳50内位于所述第一排风口52a和所述第二排风口52b的内侧，且均位于所述显示装置的安装区域的天侧，用于引导所述设备外壳内的气流分别经所 述第一排风口52a和所述第二排风口52b向外排出。
第一导风板64a位于天侧的第一端和所述第二导风板64b位于天侧的第一端分别连接在所述两个侧壁的内壁面上。所述第一导风板64a的第一端高于所述第一排风口52a在天侧的最高位置。所述第二导风板64b的第一端高于所述第二排风口52b在天侧的最高位置。所述第一导风板64a位于地侧的第二端和所述第二导风板64b位于地侧的第二端均设置在所述两个侧壁之间的中心位置。
至此，已经详细描述了本公开的各实施例。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。
虽然已经通过示例对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改或者对部分技术特征进行等同替换。本公开的范围由所附权利要求来限定。

Claims (21)

  1. 一种显示装置，包括：
    第一显示模组，具有第一背板；
    第二显示模组，具有位于所述第一背板对侧的第二背板；
    第一散热件，位于所述第一背板和所述第二背板之间；和
    第二散热件，与所述第一散热件导热连接。
  2. 根据权利要求1所述的显示装置，其中，所述第一散热件包括：
    第一散热部分，位于所述第一背板和所述第二背板之间，且在所述第一背板和所述第二背板的整个重叠区域分布；和
    第二散热部分，与所述第一散热部分一体制成，并延伸到所述第一背板和所述第二背板的重叠区域之外；
    其中，所述第二散热件位于所述第一显示模组和所述第二显示模组邻近所述第二散热部分的一侧，并与所述第二散热部分导热连接。
  3. 根据权利要求2所述的显示装置，其中，所述第二散热件包括：
    导热块，与所述第二散热部分连接；和
    散热翅片组，位于所述导热块的表面，并与所述导热块一体形成，或设置在所述导热块上。
  4. 根据权利要求3所述的显示装置，其中，所述导热块呈板状，具有四个侧端面和位于所述四个侧端面之间、并反向设置的第一散热表面和第二散热表面，所述第一散热表面与所述第一显示模组的显示屏平行，所述第二散热表面与所述第二显示模组的显示屏平行。
  5. 根据权利要求4所述的显示装置，其中，所述第一散热件包括多个细长件，所述多个细长件中的每个细长件包括作为所述第一散热部分的直杆段和作为第二散热部分的延伸段，所述导热块邻近所述延伸段的一侧的表面设有多个安装孔，所述多个细长件中各个细长件的延伸段分别插接固定在所述多个安装孔内。
  6. 根据权利要求4所述的显示装置，其中，所述导热块和所述散热翅片组的材质为金属。
  7. 根据权利要求6所述的显示装置，其中，所述导热块和所述散热翅片组的材质为铝。
  8. 根据权利要求4～7任一所述的显示装置，还包括：
    第三散热件，安装在所述第二散热件上或所述第二散热件之外，用于辅助所述导热块和所述散热翅片组进行散热。
  9. 根据权利要求8所述的显示装置，其中，所述散热翅片组包括沿所述第一散热表面和所述第二散热表面中至少一个散热表面的整体或局部分布的多个板型或针型散热翅片，所述第三散热件包括：一个或多个第一风扇，设置在所述多个板型或针型散热翅片上，并与所述导热块固定连接，用于对所述导热块和所述散热翅片组进行风冷。
  10. 根据权利要求9所述的显示装置，其中，所述第一散热表面的整体和所述第二散热表面的整体都分布有多个针型散热翅片，所述多个第一风扇包括设置在位于所述第一散热表面的针型散热翅片上，且沿平行于所述第一散热表面的方向间隔分布的至少两个轴流风扇和设置在位于所述第二散热表面的针型散热翅片上，且沿平行于所述第二散热表面的方向间隔分布的至少两个轴流风扇。
  11. 根据权利要求10所述的显示装置，其中，所述第一散热表面与所述第二散热表面平行，所述多个针型散热翅片相互平行，并与所述第一散热表面和所述第二散热表面均垂直，所述轴流风扇的进风端位于所述轴流风扇上邻近所述导热块的一侧，所述轴流风扇的出风端位于所述轴流风扇上远离所述导热块的一侧，所述轴流风扇的转动轴线与所述多个针型散热翅片平行。
  12. 根据权利要求10所述的显示装置，其中，所述多个针型散热翅片中位于所述轴流风扇的设置区域的针型散热翅片的长度短于比所述多个针型散热翅片中位于所述轴流风扇的设置区域周边的针型散热翅片的长度，以形成安装所述轴流风扇的凹入结构。
  13. 根据权利要求12所述的显示装置，其中，所述轴流风扇的出风端相对于所述多个针型散热翅片中位于所述轴流风扇的设置区域周边的针型散热翅片向出风侧凸出。
  14. 根据权利要求9～13任一所述的显示装置，其中，所述第二散热件还包括：
    罩体，具有至少一个敞口端；
    其中，所述罩体的内侧壁至少部分地罩设所述导热块和所述散热翅片组，所述一个或多个第一风扇被配置为将所述罩体内聚拢的热空气经由所述罩体的敞口端向外排出。
  15. 根据权利要求14所述的显示装置，其中，所述罩体具有两个位置相对的敞口端，所述第一散热表面的整体和所述第二散热表面的整体都分布有多个针型散热翅 片，所述罩体具有四个内侧壁，分别与所述导热块的四个侧端面紧密贴合，并在所述针型散热翅片的长度方向整体罩设在所述多个针型散热翅片的外部。
  16. 根据权利要求5所述的显示装置，其中，所述第一背板上邻近所述第二背板的一侧设有多个第一直线型细长凹槽，所述第二背板上邻近所述第一背板的一侧设有多个第二直线型细长凹槽，所述多个第二直线型细长凹槽与所述多个第一直线型细长凹槽一一对应，并与所述多个第一直线型细长凹槽围成多个直线型容纳腔，所述多个细长件的直杆段分别位于所述多个直线型容纳腔中。
  17. 一种电子设备，包括权利要求1～16任一所述的显示装置。
  18. 一种设备安装件，用于与权利要求1～16任一所述的显示装置配合使用，其中，所述设备安装件包括：
    设备外壳，内部设有所述显示装置的安装区域；和
    第二风扇，设置在所述设备外壳内，并位于所述显示装置的安装区域的地侧。
  19. 根据权利要求18所述的设备安装件，其中，在所述设备外壳相对的两个侧壁对应于所述显示装置的安装区域设有两个透明窗口，所述两个透明窗口平行，且间距大于所述显示装置在垂直于所述两个透明窗口的方向的宽度。
  20. 根据权利要求19所述的设备安装件，其中，所述设备外壳还包括：
    一个进风口，开设在所述设备外壳与所述两个透明窗口中的一个透明窗口同侧的侧壁上，且位于所述第二风扇的地侧；
    第一排风口和第二排风口，分别开设在所述两个侧壁上，且均位于所述显示装置的安装区域的天侧。
  21. 根据权利要求20所述的设备安装件，还包括：
    第一导风板和第二导风板，分别设置在所述设备外壳内位于所述第一排风口和所述第二排风口的内侧，且均位于所述显示装置的安装区域的天侧，用于引导所述设备外壳内的气流分别经所述第一排风口和所述第二排风口向外排出；
    其中，所述第一导风板位于天侧的第一端和所述第二导风板位于天侧的第一端分别连接在所述两个侧壁的内壁面上，所述第一导风板的第一端高于所述第一排风口在天侧的最高位置，所述第二导风板的第一端高于所述第二排风口在天侧的最高位置，所述第一导风板位于地侧的第二端和所述第二导风板位于地侧的第二端均设置在所述两个侧壁之间的中心位置。
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