WO2021088154A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2021088154A1
WO2021088154A1 PCT/CN2019/121136 CN2019121136W WO2021088154A1 WO 2021088154 A1 WO2021088154 A1 WO 2021088154A1 CN 2019121136 W CN2019121136 W CN 2019121136W WO 2021088154 A1 WO2021088154 A1 WO 2021088154A1
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WO
WIPO (PCT)
Prior art keywords
air duct
display device
air
display
display screen
Prior art date
Application number
PCT/CN2019/121136
Other languages
English (en)
French (fr)
Inventor
石振华
尹太勇
易岑
罗聪
唐少拓
Original Assignee
深圳市华星光电半导体显示技术有限公司
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 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Priority to US16/624,375 priority Critical patent/US11428975B2/en
Publication of WO2021088154A1 publication Critical patent/WO2021088154A1/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
    • G02F1/133382—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
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • 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
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • 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

Definitions

  • the present invention relates to the field of display, in particular to a display device.
  • High-brightness liquid crystal displays for outdoor applications due to the high ambient temperature outdoors (especially in summer), the backlight of the liquid crystal display is affected by the ambient temperature, and the temperature is relatively high.
  • the display for outdoor applications is due to the backlight itself.
  • the light-emitting heat generates more heat, so an independent air duct design is used to improve the heat dissipation of the backlight, so that the heat is dissipated as much as possible, and the normal function of the display device for outdoor applications is avoided due to the overheating of the backlight.
  • the heat dissipation system puts the fan, the heat dissipation backplane, the power board and the core board in the heat dissipation channel, which will affect the flow of the wind in the heat dissipation channel on the one hand, and the wind is affected by the uneven power board and the core board. Obstruct, affect the heat dissipation efficiency.
  • the wind comes from the outside, it will inevitably be mixed with water vapor and dust. Although filtered by the filter system, some tiny dust and water vapor will inevitably invade the air duct and fall into the power supply and movement board, affecting the power supply board and movement board. Life, even directly lead to a short circuit between the power board and the movement board.
  • the purpose of the present invention is to provide a display device to solve the problem that dust, moisture and other substances are easily mixed into the heat dissipation system of the display device in the prior art, which affects the service life of the power supply board and the movement board.
  • the present invention provides a display device, which includes a housing, an air duct, and a functional device.
  • the shell includes an air inlet and an air outlet, and the air inlet and the air outlet are arranged on two opposite sides of the shell.
  • the air duct is provided in the housing and extends from the air inlet to the air outlet.
  • the functional device is arranged in the housing and located outside the air duct.
  • the display device also includes a blower fan and an exhaust fan.
  • the blower fan is arranged at one end of the air duct close to the air inlet.
  • the exhaust fan is arranged at one end of the air duct close to the air outlet.
  • the display device further includes at least one partition, which is arranged in the casing and located between the functional device and the air duct.
  • the display device further includes a heat dissipation layer provided on the inner wall of the air duct.
  • the surface roughness of the inner wall of the air duct is greater than Ra0.04.
  • the functional device includes a display screen and electrical equipment.
  • the display screen is arranged on the air duct, and has a display surface, and the current display surface faces away from the air duct.
  • the electrical equipment is arranged on a side of the air duct away from the display screen.
  • the electrical equipment includes a sealed chamber, a power supply board and a movement board.
  • the sealed chamber is arranged on the air duct, and the power board and the movement board are arranged in the sealed chamber.
  • the electrical equipment further includes a cooling fan, which is arranged in the sealed chamber and faces the power supply board and the movement board.
  • the display screen includes a liquid crystal display panel and a backlight module.
  • the liquid crystal display panel is arranged on a side of the display screen away from the air duct.
  • the backlight module is arranged on a side of the display screen close to the air duct.
  • the display device further includes a cover plate provided on the display surface of the display screen.
  • a display device of the present invention which independently arranges the heat dissipation air duct, and arranges the functional devices in the display device on both sides of the air duct, so as to avoid multiple devices being arranged in the air duct and blocking the air duct.
  • the circulation of air reduces the resistance when the air flows in the air duct, thereby improving the heat dissipation efficiency of the display device and prolonging the service life of the display device.
  • the independent heat dissipation air duct can isolate the power board and the movement board to prevent outdoor dust, impurities and moisture from entering the power board and movement board through the air to affect its operation, ensuring its working stability and prolonging its service life.
  • FIG. 1 is a schematic diagram of the layered structure of the display device in Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of the internal structure of the electrical equipment in Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram of the layered structure of the display device in Embodiment 2 of the present invention.
  • Partition 23 heat dissipation layer 24;
  • Function device 3 display screen 31;
  • Liquid crystal display panel 311 backlight module 312;
  • the part When some part is described as being “on” another part, the part may be directly placed on the other part; there may also be an intermediate part on which the part is placed, And the middle part is placed on another part.
  • a component When a component is described as “installed to” or “connected to” another component, both can be understood as directly “installed” or “connected”, or a component is indirectly “mounted to” or “connected to” through an intermediate component To" another part.
  • An embodiment of the present invention provides a display device 1000.
  • the display device 1000 includes a housing 1, an air duct 2, a blower fan 21, an exhaust fan 22, and a functional device 3.
  • the functional device 3 includes a display screen 31 and a motor device 32.
  • the display screen 31 is disposed in the casing 1 and has a display surface, and the display surface faces the outside of the casing 1.
  • the display screen 31 includes a liquid crystal display panel 311 and a backlight module 312, the liquid crystal display panel 311 is arranged on the side of the display screen 31 close to its display surface, and the backlight module 312 is arranged on the liquid crystal display On panel 311.
  • the liquid crystal display panel 311 includes an array substrate, a color filter substrate, a liquid crystal cell and other devices. There is liquid crystal in the liquid crystal cell.
  • the liquid crystal is a special substance between solid and liquid. It is an organic compound that is liquid under normal conditions, but its molecular arrangement is very regular like solid crystals, so it is named liquid crystal.
  • Another special property of the liquid crystal molecules is that under the action of an electric field, the arrangement of the liquid crystal molecules will change, thereby affecting the change of the light passing through it. This change of light can be expressed as a change of light and dark through the action of the polarizer.
  • the backlight module 312 is a uniform lighting device located behind the liquid crystal display panel 311. It has a light-emitting surface, and the light-emitting surface faces the liquid crystal display panel 311. Its light-emitting effect will directly affect the liquid crystal display panel 311.
  • the liquid crystal display panel 311 has a visual effect.
  • the liquid crystal display panel 311 is a passive light-emitting device and does not emit light by itself.
  • the picture or image it displays is the result of light modulation provided by the backlight module 312 below it.
  • the backlight module 312 includes a backlight source, a back plate, and optical films such as a light guide plate and a reflective sheet.
  • the backplane is arranged on a side of the backlight module 312 away from its light-emitting surface, and is used to protect the overall structure of the backlight module 312.
  • the backlight sources are generally arranged on one side or both sides of the entire backlight module 312.
  • the backlight source is generally a cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) or a light emitting diode (Light Emitting Diode, LED) light bar
  • cold cathode fluorescent tube is a linear light source
  • light-emitting diode light bar is a point light source. Therefore, it is necessary to use a light guide plate to convert a linear light source and a point light source into a surface light source.
  • the light guide plate is made by using injection molding to press propylene into a plate with a smooth surface, and then a material with high reflection and non-light absorption is used to print diffusion points on the bottom surface of the light guide plate by screen printing, cold cathode fluorescent tube Or the light-emitting diode light bar is located on the side of the light guide plate, and the light emitted by it is guided into the light guide plate by reflection.
  • the light hits the diffusion point, the reflected light will diffuse to various angles, and then the damage to the reflection condition will be emitted from the front of the light guide plate.
  • Various sparse and dense diffusion points of different sizes can make the light guide plate emit light evenly.
  • the purpose of the reflective sheet is to reflect the light directed to the bottom surface back into the light guide plate to improve the efficiency of light use.
  • the light guide plate and the reflective sheet are used to guide the scattering and reflection direction of the light, so that the light will not be emitted from the area other than the light exit surface, improve the brightness of the backlight module 312, and ensure the liquid crystal display The uniformity of the brightness of the panel 311.
  • These optical films cooperate with each other to increase the front-view brightness of the backlight module 312, improve the angular distribution of light without increasing the number of light sources, concentrate the light on the front-view angle, reduce loss, and increase the total light flux And the axial brightness of the backlight module 312.
  • the electrical equipment 32 is arranged on the display screen 31. As shown in FIG. 2, the electrical equipment 32 includes a sealed chamber 321, a power supply board 322, and a movement board 323. The power supply board 322 and the The movement board 323 is arranged in the sealed chamber 321.
  • the power board 322 is an important part of the driving system in the display device 1000, and is responsible for controlling the power supply of the driving circuit, and boosting the voltage of the transformer to provide sufficient driving voltage when lighting, and keeping the output current stable when the circuit is working.
  • the display device 1000 needs a digitized video signal to display an image.
  • the core board 323 converts the analog signal to a digital signal (or from one digital signal to another digital signal), and sends the converted digital signal
  • the array substrate in the display screen 31 is used to control the display image of the liquid crystal display panel 311.
  • the sealed chamber 321 seals the power supply board 322 and the movement board 323 inside, prevents external moisture and dust from entering, prevents the power supply board 322 and the movement board 323 from short-circuiting, and prolongs their service life.
  • heat dissipation fan 324 in the sealed cavity 321, which faces the heat concentration area of the power board 322 and the core board 323, to ensure the heat dissipation of the heat concentration area, and avoid excessive heat accumulation and damage to the device. Extend the service life of the power board 322 and the movement board 323.
  • the display device 1000 also includes a cover plate 33.
  • the cover plate 33 is generally a glass cover plate 33, which covers the display surface of the display screen 31 for protection while not affecting the display of the display device 1000.
  • the display screen 31 is generally a glass cover plate 33, which covers the display surface of the display screen 31 for protection while not affecting the display of the display device 1000.
  • the housing 1 has an air inlet 11 and an air outlet 12.
  • the air inlet 11 and the air outlet 12 are respectively located on the housing 1 and located on both sides of the display screen 31.
  • the air duct 2 extends from the air inlet 11 to the air outlet 12 and is arranged between the display screen 31 and the electrical equipment 32.
  • the blower fan 21 is arranged at one end of the air duct 2 close to the air inlet 11, and has an air inlet and a blower.
  • the air inlet faces the air inlet 11, and the blower faces the air.
  • Road 2 is arranged at one end of the air duct 2 close to the air outlet 12, and has an air inlet and an air outlet, the air inlet faces the air duct 2, and the air outlet faces the air outlet.
  • Outlet 12 is arranged at one end of the air duct 2 close to the air outlet 12, and has an air inlet and an air outlet, the air inlet faces the air duct 2, and the air outlet faces the air outlet. Outlet 12.
  • the blower fan 21 draws in the air outside the housing 1 from the air inlet 11 through its air inlet and blows the air into the air duct 2 through its air blower.
  • the exhaust fan 22 draws air from the air duct 2 through its air inlet. The inside is drawn out and the air is discharged from the air outlet 12 of the housing 1 through its air outlet. The air circulates in the air duct 2 while taking away the heat generated by the functional devices 3 provided on the upper and lower sides of the air duct 2.
  • the display device 1000 also includes a partition 23 which separates the air duct 2 from the electrical equipment 32.
  • the partition 23 and the back plate in the backlight module 312 block the air duct 2 and form an independent heat dissipation channel.
  • the dust mixed in the air and Water vapor will not enter the electrical equipment 32 and affect the operation of the power board 322 and the movement board 323 in the electrical equipment 32.
  • the surface roughness of the inner wall of the air duct 2 can be increased, that is, the side of the partition 23 facing the air duct 2 and the side of the backlight module 312 facing the air duct 2, so that Its surface roughness is greater than Ra0.04 to increase its surface area to achieve the purpose of improving heat dissipation efficiency.
  • a display device 1000 provided in an embodiment of the present invention has an independent heat dissipation air duct 2 to avoid blocking the air flow in the air duct 2 by multiple elements, and reduce the resistance encountered by the air flow, thereby improving the display
  • the heat dissipation efficiency of the device 1000 prevents heat accumulation from affecting the working reliability and service life of the whole machine.
  • the independent heat dissipation air duct 2 can isolate the power supply board 322 and the movement board 323 to prevent outdoor dust, impurities and water vapor from entering the power supply board 322 and the movement board 323 through the air to affect its operation, ensuring its working stability and Extend its service life.
  • An embodiment of the present invention provides a display device 1000.
  • the layered structure of the display device 1000 in the embodiment of the present invention is similar to the layered structure in Embodiment 1, but in the embodiment of the present invention ,
  • the inner wall of the air duct 2 is provided with a heat dissipation layer 24, that is, a side of the partition 23 facing the air duct 2 and a side of the backlight module 312 facing the air duct 2 are respectively covered with ⁇ 24 ⁇ Heat dissipation layer 24.
  • the heat dissipation layer 24 may be a material with excellent thermal conductivity such as heat dissipation paint and graphene, which is used to improve the heat dissipation efficiency of the display device 1000.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
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  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种显示装置(1000)，包括壳体(1)、风道(2)和功能器件(3)。壳体(1)包括一入风口(11)和一出风口(12)，入风口(11)和出风口(12)设置于壳体(1)相对设置的两个边侧。风道(2)设于壳体(1)内，且从入风口(11)延伸至出风口(12)。功能器件(3)设于壳体(1)内，且位于风道(2)的外侧。

Description

显示装置
本申请要求于2019年11月07日提交中国专利局、申请号为201911078919.1发明名称为“显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示领域，特别是一种显示装置。
 背景技术
户外应用的高亮度的液晶显示器，一方面由于在室外（尤其是夏天环境下）环境温度较高，液晶显示器背光受到环境温度的影响，温度较高，另一方面，户外应用的显示器由于背光自身发光发热产生较多热量，因此采用独立风道设计来提升背光的散热，使热量尽可能散出来，避免由于背光过热影响户外应用的显示装置的正常功能。
一般散热系统将风扇、被散热背板、电源板和机芯板等结构放置于散热通道中，这样一方面会影响风在散热通道里的流动，风被凸凹不平的电源板和机芯板等阻隔，影响散热效率。并且，由于风从外界而来，必然掺杂着水汽和粉尘，虽然经过过滤系统过滤，但一些微小粉尘和水汽不可避免侵入风道，落入电源与机芯板，影响电源板和机芯板寿命，甚至直接导致电源板和机芯板短路。
 技术问题
本发明的目的是提供一种显示装置，以解决现有技术中显示装置的散热系统中容易掺入粉尘、水汽等物质，影响电源板和机芯板的使用寿命。
 技术解决方案
为实现上述目的，本发明提供一种显示装置，其包括壳体、风道和功能器件。所述壳体包括一入风口和一出风口，所述入风口和所述出风口设置于所述壳体相对设置的两个边侧。所述风道设于所述壳体内，且从所述入风口延伸至所述出风口。所述功能器件设于所述壳体内，且位于所述风道的外侧。
进一步地，所述显示装置中还包括鼓风扇和排风扇。所述鼓风扇设于所述风道靠近所述入风口的一端。所述排风扇设于所述风道靠近所述出风口的一端。
进一步地，所述显示装置中还包括至少一隔板，设于所述壳体内，并位于所述功能器件与所述风道之间。
进一步地，所述显示装置中还包括散热层，其设于所述风道的内壁上。
进一步地，所述风道的内壁的表面粗糙度大于Ra0.04。
进一步地，所述功能器件中包括显示屏和电机设备。所述显示屏设于所述风道上，其具有一显示面，所述现显示面背向所述风道。所述电机设备设于所述风道远离所述显示屏的一侧上。
进一步地，所述电机设备中包括一密封腔室以及电源板和机芯板。所述密封腔室设于所述风道上，所述电源板和所述机芯板设于所述密封腔室内。
进一步地，所述电机设备中还包括散热扇，其设于所述密封腔室内，并朝向所述电源板和所述机芯板。
进一步地，所述显示屏中包括液晶显示面板和背光模组。所述液晶显示面板设于所述显示屏远离所述风道的一侧。所述背光模组设于所述显示屏靠近所述风道的一侧。
进一步地，所述显示装置中还包括盖板设于所述显示屏的显示面上。
 有益效果
本发明的优点是：本发明的一种显示装置，其将散热风道独立设置，将显示装置中的功能器件设于所述风道的两侧，避免过多元器件设于风道中阻挡风道中空气的流通，减少空气在风道中流动时的阻力，从而提高所述显示装置的散热效率，延长所述显示装置的使用寿命。同时，独立的散热风道可以将电源板和机芯板隔离，避免户外的外界粉尘杂质和水汽通过空气进入电源板和机芯板内部影响其运作，保证其工作稳定性以及延长其使用寿命。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例1中显示装置的层状结构示意图；
图2为本发明实施例1中电机设备的内部结构示意图；
图3为本发明实施例2中显示装置的层状结构示意图。
图中部件表示如下：
显示装置1000；
壳体1；入风口11；
出风口12；风道2；
鼓风扇21；排风扇22
隔板23；散热层24；
功能器件3；显示屏31；
液晶显示面板311；背光模组312；
电机设备32；密封腔室321；
电源板322；机芯板323；
散热扇324；盖板33。
 本发明的实施方式
以下参考说明书附图介绍本发明的优选实施例，证明本发明可以实施，所述发明实施例可以向本领域中的技术人员完整介绍本发明，使其技术内容更加清楚和便于理解。本发明可以通过许多不同形式的发明实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。附图所示的每一部件的尺寸和厚度是任意示出的，本发明并没有限定每个组件的尺寸和厚度。为了使图示更清晰，附图中有些地方适当夸大了部件的厚度。
此外，以下各发明实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定发明实施例。本发明中所提到的方向用语，例如，“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”、“侧面”等，仅是参考附加图式的方向，因此，使用的方向用语是为了更好、更清楚地说明及理解本发明，而不是指示或暗指所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
当某些部件被描述为“在”另一部件“上”时，所述部件可以直接置于所述另一部件上；也可以存在一中间部件，所述部件置于所述中间部件上，且所述中间部件置于另一部件上。当一个部件被描述为“安装至”或“连接至”另一部件时，二者可以理解为直接“安装”或“连接”，或者一个部件通过一中间部件间接“安装至”、或“连接至”另一个部件。
实施例1
本发明实施例中提供了一种显示装置1000，如图1所示，所述显示装置1000中包括一壳体1、一风道2、鼓风扇21、排风扇22以及功能器件3。其中，所述功能器件3中包括显示屏31以及电机设备32。
所述显示屏31设于所述壳体1内，其具有一显示面，所述显示面朝向所述壳体1外。所述显示屏31中包括液晶显示面板311和背光模组312，所述液晶显示面板311设于所述显示屏31靠近其显示面的一侧，所述背光模组312设于所述液晶显示面板311上。
所述液晶显示面板311中包括阵列基板、彩膜基板、液晶盒等器件。在液晶盒中具有液晶，液晶是介于固态和液态间的特殊物质，它是一种有机化合物，常态下呈液态，但是它的分子排列却和固体晶体一样非常规则，因此取名液晶，它的另一个特殊性质在于，在电场作用下，液晶分子会发生排列上的变化，从而影响通过其的光线变化，这种光线的变化通过偏光片的作用可以表现为明暗的变化。就这样，人们通过阵列基板对电场的控制从而控制液晶盒中液晶的排列，最终控制光线的明暗变化，从而达到显示图像的目的。最后再通过彩膜基板的配合，改变加给液晶的电压大小，就能改变某一颜色透光量的多少，也可以形象地说改变液晶两端的电压就能改变它的透光度。
所述背光模组312是位于所述液晶显示面板311背后的一种均匀照明装置，其具有一出光面，所述出光面朝向所述液晶显示面板311，它的发光效果将直接影响到所述液晶显示面板311视觉效果。所述液晶显示面板311是被动发光器件，其本身并不发光，它显示的画面或图像是它对其下方的背光模组312所提供的光线调制后的结果。所述背光模组312中包括背光源、背板以及导光板、反射片等光学膜片。所述背板设于所述背光模组312远离其出光面的一侧，其用于保护所述被背光模组312的整体结构。所述背光源一般排列在整个背光模组312的一侧或两侧。所述背光源一般为冷阴极荧光灯管（Cold Cathode Fluorescent Lamp，CCFL）或发光二极管（Light Emitting Diode，LED）灯条，冷阴极荧光灯管是线光源，发光二极管灯条是点光源，因此把线光源和点光源转换为面光源需要使用导光板。所述导光板是利用射出成型的方法将丙烯压制成表面光滑的板块，然后用具有高反射且不吸光的材料，在导光板的底面用网版印刷的方式印上扩散点，冷阴极荧光灯管或发光二极管灯条位于导光板侧边，其发出的光利用反射导入导光板内部，当光线射到扩散点时，反射光会往各个角度扩散，然后将破坏反射条件由导光板正面射出，利用各种疏密、大小不一的扩散点，可使导光板均匀发光。所述反射片的用途在于将射向底面的光线反射回所述导光板中，用来提高光的使用效率。所述导光板和所述反射片用于引导光的散射及反射方向，促使光线不会射出从所述出光面以外的区域射出，提高所述背光模组312的亮度，并确保所述液晶显示面板311的亮度的均匀性。这些光学膜片互相配合，提高所述背光模组312的正视亮度，在不增加光源数量的情况下，改善光线的角分布，将光线集中到正视角度上，并减少损耗，提高总的出光光通量以及所述背光模组312的轴向亮度。
所述电机设备32设于所述显示屏31上，如图2所示，所述电机设备32中包括一密封腔室321、电源板322和机芯板323，所述电源板322和所述机芯板323设于所述密封腔室321中。所述电源板322是显示装置1000中驱动系统的重要组成部分，负责控制驱动电路的电源，以及点亮时变压器升压以提供足够的驱动电压，并保持电路工作时的输出电流稳定。所述显示装置1000在显示图像需要数字化过的视频信号，机芯板323将模拟信号转化为到数字信号（或者从一种数字信号到另外一种数字信号），并将转化后的数字信号发送给显示屏31中的阵列基板，从而控制所述液晶显示面板311的显示画面。所述密封腔室321将所述电源板322和所述机芯板323密封于其内部，防止外部的水汽和灰尘进入，防止电源板322和机芯板323发生短路现象，延长其使用寿命。
在所述密封腔室321内还具有一个散热扇324，其朝向所述电源板322和机芯板323的热量集中区，保证热量集中区的散热，避免热量积累过多造成器件的损坏，进一步延长电源板322和机芯板323的使用寿命。
所述显示装置1000中还包括一盖板33，所述盖板33一般为玻璃盖板33，其覆于所述显示屏31的显示面上，用于在不影响显示装置1000显示的同时保护所述显示屏31。
在所述壳体1上具有一入风口11以及一出风口12，所述入风口11和所述出风口12分别所述壳体1上并对应位于所述显示屏31的两侧。所述风道2从所述入风口11延伸至所述出风口12，其设于所述显示屏31和所述电机设备32之间。所述鼓风扇21设于所述风道2靠近所述入风口11的一端，其具有一进风口和一鼓风口，所述进风口朝向所述入风口11，所述鼓风口朝向所述风道2。所述排风扇22设于所述风道2靠近所述出风口12的一端，其具有一吸风口和一排风口，所述吸风口朝向所述风道2，所述排风口朝向所述出风口12。所述鼓风扇21通过其进风口将壳体1外的空气从入风口11抽进并通过其鼓风口将空气吹入风道2内，所述排风扇22通过其吸风口将空气从风道2内抽出并通过其排风口将空气从壳体1的出风口12排出。所述空气在风道2内流通的同时并将设于所述风道2上侧和下侧的功能器件3所产生的热量带走。
所述显示装置1000内还包括一隔板23，其将所述风道2与所述电机设备32阻隔开。所述隔板23和所述背光模组312中的背板阻隔出所述风道2，并形成一个独立的散热通道，当外部空气进入所述风道2时，混杂在空气中的粉尘以及水汽不会进入到电机设备32中，影响电机设备32中的电源板322和机芯板323的运作。
为提高散热效率，可增加所述风道2的内壁的表面粗糙度，即所述隔板23朝向所述风道2的一面以及所述背光模组312朝向所述风道2的一面，使其表面粗糙度大于Ra0.04，以增大其表面积，以达到提高散热效率的目的。
本发明实施例中所提供的一种显示装置1000，其将散热风道2独立设置，避免过多元器件阻挡空气在风道2里的流动，减少空气流动所遭遇的阻力，从而提高所述显示装置1000的散热效率，避免热量积累影响整机的工作可靠性和使用寿命。同时，独立的散热风道2可以将电源板322和机芯板323隔离，避免户外的外界粉尘杂质和水汽通过空气进入电源板322和机芯板323内部影响其运作，保证其工作稳定性以及延长其使用寿命。
实施例2
本发明实施例中提供了一种显示装置1000，如图3所示，本发明实施例中的显示装置1000的层状结构与实施例1中的层状结构相似，但在本发明实施例中，所述风道2的内壁上设有散热层24，即在所述隔板23朝向所述风道2的一面上和所述背光模组312朝向所述风道2的一面上分别覆有一散热层24。所述散热层24可以为散热漆、石墨烯等导热性能优异的材料，其用于提高所述显示装置1000的散热效率。
在本发明实施例1和实施例2中均仅包括一层隔板23，但在本发明的其他实施例中还可以具有两层隔板23，分别设于所述电机设备32与所述风道2之间和所述显示屏31与所述风道2之间，其其他层状结构与本发明实施例中的显示装置1000相似，因此不在此做过多赘述。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其它实施例，都属于本申请保护的范围。
虽然在本文中参照了特定的实施方式来描述本发明，但是应该理解的是，这些实施例仅仅是本发明的原理和应用的示例。因此应该理解的是，可以对示例性的实施例进行许多修改，并且可以设计出其他的布置，只要不偏离所附权利要求所限定的本发明的精神和范围。应该理解的是，可以通过不同于原始权利要求所描述的方式来结合不同的从属权利要求和本文中所述的特征。还可以理解的是，结合单独实施例所描述的特征可以使用在其他所述实施例中。

Claims (10)

  1. 一种显示装置，其包括：
    壳体，包括一入风口和一出风口，所述入风口和所述出风口设置于所述壳体相对设置的两个边侧；
    风道，设于所述壳体内，且从所述入风口延伸至所述出风口；
    功能器件，设于所述壳体内，且位于所述风道的外侧。
  2. 如权利要求1所述的显示装置，其还包括：
    鼓风扇，设于所述风道靠近所述入风口的一端；
    排风扇，设于所述风道靠近所述出风口的一端。
  3. 如权利要求1所述的显示装置，其还包括：
    至少一隔板，设于所述壳体内，并位于所述功能器件与所述风道之间。
  4. 如权利要求1所述的显示装置，其还包括：
    散热层，设于所述风道的内壁上。
  5. 如权利要求1所述的显示装置，其中，所述风道的内壁的表面粗糙度大于Ra0.04。
  6. 如权利要求1所说的显示装置，其中，所述功能器件包括：
    显示屏，设于所述风道上，其具有一显示面，所述现显示面背向所述风道；
    电机设备，设于所述风道远离所述显示屏的一侧上。
  7. 如权利要求6所述的显示装置，其中，所述电机设备包括：
    一密封腔室，设于所述风道上；
    电源板和机芯板，设于所述密封腔室内。
  8. 如权利要求7所述的显示装置，其中，所述电机设备还包括：
    散热扇，设于所述密封腔室内，并朝向所述电源板和所述机芯板。
  9. 如权利要求6所述的显示装置，其中，所述显示屏包括：
    液晶显示面板，设于所述显示屏远离所述风道的一侧；
    背光模组，设于所述显示屏靠近所述风道的一侧。
  10.     如权利要求1所述的显示装置，其还包括盖板，设于所述显示屏的显示面上。
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