WO2019127741A1 - 背光模组的散热装置、背光模组和显示装置 - Google Patents

背光模组的散热装置、背光模组和显示装置 Download PDF

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Publication number
WO2019127741A1
WO2019127741A1 PCT/CN2018/073279 CN2018073279W WO2019127741A1 WO 2019127741 A1 WO2019127741 A1 WO 2019127741A1 CN 2018073279 W CN2018073279 W CN 2018073279W WO 2019127741 A1 WO2019127741 A1 WO 2019127741A1
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WO
WIPO (PCT)
Prior art keywords
heat sink
backlight module
heat
sealing cover
gas outlet
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PCT/CN2018/073279
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English (en)
French (fr)
Inventor
李德华
俞刚
Original Assignee
惠州市华星光电技术有限公司
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Application filed by 惠州市华星光电技术有限公司 filed Critical 惠州市华星光电技术有限公司
Priority to US15/752,539 priority Critical patent/US20200133066A1/en
Publication of WO2019127741A1 publication Critical patent/WO2019127741A1/zh

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    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the present application relates to the field of display technologies, and in particular, to a heat dissipation device, a backlight module, and a display device of a backlight module.
  • the liquid crystal display device generally includes a backlight module and a liquid crystal display panel which are stacked, and the liquid crystal display panel itself does not emit light, and the backlight module is required to provide backlight for display.
  • a typical point source device light-emitting diodes (LEDs) are often used as key components in backlight modules.
  • LEDs light-emitting diodes
  • One of the more common ones is to use a plurality of light-emitting diodes as a point source array disposed on a surface of a printed circuit board (PCB) to form a light bar.
  • PCB printed circuit board
  • a plurality of light emitting diodes emit light under the driving action of the printed circuit board, thereby forming a strip line light source, and then changing a light exiting direction through a light guide plate (LGP) of the backlight module to obtain a uniform surface light source.
  • LGP light guide plate
  • An object of the present invention is to provide a heat sink, a backlight module and a display device of a backlight module to overcome the deficiencies in the prior art.
  • the present invention provides the following technical solutions:
  • the embodiment of the present application discloses a heat dissipation device for a backlight module, including:
  • a heat sink for installing a light source, a heat sink wind groove is formed on one side of the heat sink, and a gas inlet and a gas outlet are respectively formed at two ends of the heat sink wind groove;
  • the constant current fan has an outlet corresponding to the gas inlet of the heat sink.
  • the heat sink includes a plurality of fins arranged in an array, and an outer side of the fin is covered with a sealing cover, and the sealing cover is enclosed between the sealing cover and the fin The heat sink wind channel.
  • the gas outlet is opened on the sealing cover.
  • a baffle is disposed in the array in the gas outlet.
  • the fin is integrally formed on the heat sink.
  • the sealing cover includes a panel and three side plates formed by bending three sides of the panel toward the same side, and the three side plates are shielded from the fins. Side of the side.
  • the sealing cover exposes one side of the heat sinking trough to form the gas inlet, and the gas outlet is opened on the panel.
  • a backlight module including:
  • the heat dissipation device The heat dissipation device
  • a light source mounted on the heat sink.
  • adjacent ones of the fins enclose a heat sinking groove extending in a vertical direction, and the gas inlet is formed at a top end of the heat sinking groove.
  • a display device including:
  • the backlight module provides backlighting for displaying the liquid crystal display panel
  • the cover body covers the outer side of the backlight module, and the cover body is provided with a heat dissipation hole corresponding to the gas outlet.
  • the invention has the advantages that the backlight heat dissipation structure of the invention adopts a cross flow fan to pass the airflow into the heat sink wind channel, taking away heat, and achieving the purpose of active cooling.
  • FIG. 1 is a perspective view of a heat sink of a backlight module according to an embodiment of the present invention
  • FIG. 2 is a perspective exploded view of a heat sink of a backlight module according to an embodiment of the present invention
  • Figure 3 is an enlarged schematic view of A in Figure 2;
  • FIG. 4 is a schematic structural view of a heat sink wind groove according to an embodiment of the present invention.
  • Figure 5 is a schematic view showing the assembly of the display device in the embodiment of the present invention (without a cover);
  • FIG. 6 is a schematic view showing the assembly of a display device (including a cover body) according to a specific embodiment of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the heat sink 10 includes a heat sink 11, a cross flow fan 12, and a sealing cover 13.
  • the heat sink 11 is used to mount a light source, and the heat sink 11 protrudes from the other side of the light source with an array of fins 111.
  • the fins 111 are integrally formed on the heat sink 11.
  • the fins 111 are juxtaposed and spaced fins.
  • a heat sinking groove 112 is formed between the adjacent fins 111. Both ends 112A and 112B of the heat sinking groove 112 and the top end 112C are open.
  • the heat sink 11 is entirely made of an aluminum material or an electrolytic lead-lead galvanized steel sheet material. It can achieve rapid heat transfer.
  • the sealing cover 13 is a cover body, and includes a panel 131 and three side plates 132 which are formed by bending three sides of the panel 131 toward the same side.
  • the panel 131 is correspondingly covered in the top opening 112C of the heat sinking groove 112, wherein one side plate correspondingly covers the end opening 112A of the heat sinking groove 112.
  • the sealing cover 13 does not cover the end opening 112B of the heat sinking groove 112 and serves as a gas inlet for the heat sinking groove 112.
  • openings 1311 respectively communicating with the plurality of heat sinking grooves 112 are formed, and the openings serve as gas outlets of the heat sinking grooves 112.
  • baffle 1312 is distributed in the array in the opening 1311.
  • the opening 1311 is disposed at one end away from the gas inlet 112B.
  • the gas outlet of the cross flow fan 12 corresponds to the end opening 112B of the heat sinking groove 112 for feeding cold air into the heat sinking groove 112, and then the heat inside the heat sinking groove 112 is taken out from the opening 1311.
  • a plurality of cross flow fans can be arranged side by side in the lateral direction.
  • the gas outlet of the heat sink air channel 112 may also be disposed on the side plate.
  • the panel is a continuous flat plate, and the end opening 112A of the wind tunnel 112 is removed, and the end opening is closed. 112A serves as a gas outlet for the heat sinking trough 112.
  • the technical solution has certain defects, such as: the lower heat dissipation area is small, resulting in poor airflow, and is covered on the cover body outside the backlight module, and the heat dissipation hole is usually disposed on the housing opposite to the display panel to increase
  • the heat dissipating surface which causes the hot air of the end opening 112A to come out, is discharged through a long path, and the heat dissipating efficiency is low, so this embodiment is not preferred in the present case.
  • the gas outlet on the panel 131 is disposed opposite to the heat dissipation hole 21 on the cover body 20, the heat dissipation path is reduced, the heat dissipation surface is increased, the structure is compact, and the heat dissipation efficiency is high.
  • sealing cover 13 and the heat sink 11 are detachably connected by screws or snaps.
  • the heat sinking groove 31 may be integrally formed on one side of the heat sink, and may be a rectangular airflow passage groove, which is closed around and open at both ends, one end of which is The cross-flow fan has an opposite outlet and the other end serves as a gas outlet.
  • one end of the air flow passage can be closed, and then a hole is opened in the side wall of the air flow passage as a gas outlet.
  • the heat sink air channel 31 may be provided with one, or a heat sink may be added in the heat sink air channel.
  • the present application further discloses a backlight module, including the heat sink 10 shown in FIG. 1 to FIG. 4, further comprising a light source 40 disposed on the heat sink.
  • the light source preferably uses a plurality of light emitting diodes as a point source array disposed on a surface of a printed circuit board (PCB) to form a light bar.
  • a plurality of light emitting diodes emit light under the driving action of the printed circuit board, thereby forming a strip line light source, and then changing a light exiting direction through a light guide plate (LGP) of the backlight module to obtain a uniform surface light source.
  • LGP light guide plate
  • the heat sinking groove extends in the vertical direction, and the end opening 112B is formed at the top end of the heat sinking groove.
  • a display device including a liquid crystal display panel 50 , a backlight module mounted on the back of the liquid crystal display panel 50 , and an outer cover of the backlight module.
  • Cover 30 The cover 30 is provided with a heat dissipation hole 31 corresponding to the opening 1311.
  • the working principle of the present invention is that the light source is fixed on the heat sink, and the heat emitted by the light source is transmitted to the heat sink fin through the heat sink, and the cross flow fan sucks the air flow from the fan surface and then emits it from the radial direction;
  • the airflow absorbs heat during the flow in the hot sinking trough;
  • the sealing cover is added to ensure the airflow flows between the fins;
  • the baffle is arranged at the tail of the sealing cover to make the airflow with heat from the regulation The direction flows to the outside; when forming the whole machine, the vent holes are designed in the position of the cross-flow fan and the corresponding outer casing of the air outlet to ensure good circulation of hot and cold air.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种背光模组的散热装置（10）、背光模组和显示装置，该散热装置（10）包括：用以安装光源的热沉（11），该热沉（11）的一侧形成有热沉风槽（112），热沉风槽（112）的两端分别形成有气体入口和气体出口；恒流风扇（12），其出口对应于热沉风槽（112）的气体入口。该背光散热结构，采用横流风扇（12），将气流通入热沉风槽（112），带走热量，达到主动性降温目的。

Description

背光模组的散热装置、背光模组和显示装置 技术领域
本申请涉及显示器技术领域，特别是涉及一种背光模组的散热装置、背光模组和显示装置。
背景技术
液晶显示装置一般包括叠合设置的背光模组和液晶显示面板，液晶显示面板本身不会发光，需要背光模组为其提供背光进行显示。发光二极管(LED)作为典型的点光源装置，往往作为关键零组件应用于背光模组。其中较常用的即是采用多个发光二极管作为点光源阵列设置于印刷电路板(PCB)表面组成发光二极管灯条(Light Bar)。多个发光二极管在该印刷电路板的驱动作用下发光，进而形成条形线光源，然后通过背光模组的导光板(LGP)改变光的出射方向，得到均匀的面光源。
随着液晶显示器发展，人们对画质追求越来越高。无论分辨率、亮度还是色域的提升，都意味着光源功耗的提升，导致散热需求大幅上升。以往光源需求的散热性能比较低，只需要被动辐射散热即可满足(能力密度<0.1W/MM)，然而随着画质增长的需要，被动式散热已无法满足需求。
发明内容
本发明的目的在于提供一种背光模组的散热装置、背光模组和显示装置，以克服现有技术中的不足。
为实现上述目的，本发明提供如下技术方案：
本申请实施例公开一种背光模组的散热装置，包括：
用以安装光源的热沉，该热沉的一侧形成有热沉风槽，所述热沉风槽的两端分别形成有气体入口和气体出口；
恒流风扇，其出口对应于所述热沉风槽的气体入口。
其中，在上述的背光模组的散热装置中，所述热沉包括阵列设置的多个鳍片，所述鳍片的外侧遮盖有密封盖，所述密封盖与所述鳍片之间围成所述热沉风槽。
其中，在上述的背光模组的散热装置中，所述气体出口开设于所述密封盖上。
其中，在上述的背光模组的散热装置中，所述气体出口内阵列分布有导流板。
其中，在上述的背光模组的散热装置中，所述鳍片一体成型于所述热沉上。
其中，在上述的背光模组的散热装置中，所述密封盖包括面板、以及自面板三个侧边向同一侧折弯形成的三个侧板，该三个侧板遮挡于所述鳍片的侧边。
其中，在上述的背光模组的散热装置中，所述密封盖暴露所述热沉风槽的一侧以形成所述气体入口，所述气体出口开设于所述面板上。
相应的，本申请还公开了一种背光模组，包括：
所述的散热装置；
光源，安装于所述热沉上。
优选的，在上述的背光模组中，相邻所述鳍片之间围成沿竖直方向延伸的一个所述热沉风槽，所述气体入口形成于所述热沉风槽的顶端。
相应的，本申请还公开了一种显示装置，包括：
液晶显示面板；
所述的背光模组，为液晶显示面板提供背光进行显示；
罩体，遮盖于所述背光模组的外侧，所述罩体上开设有与所述气体出口相对应的散热孔。
与现有技术相比，本发明的优点在于：本发明的背光散热结构，采用横流风扇，将气流通入热沉风槽，带走热量，达到主动性降温目的。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术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 中的附图仅仅是本申请中记载的一些实施例，对于本领域普通技术人员来讲，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所示为本发明具体实施例中背光模组散热装置的立体图；
图2所示为本发明具体实施例中背光模组散热装置的立体分解示意图；
图3所示为图2中A的放大示意图；
图4所示为本发明一实施例中热沉风槽的结构示意图；
图5所示为本发明具体实施例中显示装置的组装示意图(无罩体)；
图6所示为本发明具体实施例中显示装置的组装示意图(含罩体)。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示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”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
结合图1和图2所示，在一实施例中，散热装置10包括热沉11、横流风扇12和密封盖13。
热沉11用以安装光源，热沉11相对光源的另一侧凸伸有阵列分布的鳍片111。
在优选的实施例中，鳍片111一体成型于热沉11上。
结合图3所示，鳍片111为并列且间隔设置的散热片，相邻鳍片111之间形成有热沉风槽112，热沉风槽112的两端112A、112B，以及顶端112C开口。
在优选的实施例中，热沉11整体采用采用铝材料或电解亚铅镀锌钢板材料。可以实现热量快速的传递作用。
密封盖13为一罩体，包括面板131、以及自面板131三个侧边向同一侧折弯形成的三个侧板132。而相应的，面板131对应遮盖于热沉风槽112的顶端开口112C，其中一侧板对应遮盖于热沉风槽112的端部开口112A。
本实施例中，密封盖13不对热沉风槽112的端部开口112B进行遮盖，并以其作为热沉风槽112的气体入口。
而面板131上，开设有分别与多个热沉风槽112连通的开口1311，该开口作为热沉风槽112的气体出口。
进一步地，开口1311内阵列分布有导流板1312。
为了保证气体流经整个热沉风槽112，开口1311设置于背离气体入口112B的一端。
横流风扇12的气体出口对应于热沉风槽112的端部开口112B，用以将冷风送入热沉风槽112内，然后将热沉风槽112内部的热量从开口1311带出。
由于微型横流风扇12横向宽度有限，本案可以在横向并排设置多个横流风扇。
在其他实施例中，热沉风槽112的气体出口，还可以设置于侧板上，比如面板为一连续的平板，取消对沉风槽112的端部开口112A的遮挡，并以端部开口112A作为热沉风槽112的气体出口。但是该技术方案存在一定的缺陷，比如：下方散热面积小，导致出风不畅，而遮盖于背光模组外侧的罩体上，散热孔通常设置在与显示面板相对的壳体上以增大散热面，这样导致端部开口112A的热风出来后，要经过较长的路径才能散发出去，散热效率低，因此该实施方案并非本案优选。
作为本案的较佳实施例，面板131上气体出口与罩体20上的散热孔21相对设置，降低散热路径，增大散热面，结构紧凑，散热效率高。
进一步地，密封盖13与热沉11采用螺钉或卡扣方式可拆卸连接。
结合图4所示，在另一实施例中，热沉风槽31还可以一体成型于热沉的一侧，其可以为截面呈矩形的气流通槽，四周封闭，两端开口，其中一端与横流风机的出口相对，另一端作为气体出口。
易于想到的是，还可以对气流通槽的一端封闭，然后在气流通槽的侧壁上开孔作为气体出口。
该实施例中，热沉风槽31可以设置有一个，也可以在该热沉风槽内增加散热片。
在一实施例中，本申请还公开了一种背光模组，包括图1至图4所示的散热装置10，还包括设置在热沉上的光源40。
光源优选采用多个发光二极管作为点光源阵列设置于印刷电路板(PCB)表面组成发光二极管灯条(Light Bar)。多个发光二极管在该印刷电路板的驱动作用下发光，进而形成条形线光源，然后通过背光模组的导光板(LGP)改变光的出射方向，得到均匀的面光源。
该实施例中，热沉风槽沿竖直方向延伸，端部开口112B形成于热沉风槽的顶端。
结合图5和图6所示，在一实施例中，还公开了一种显示装置，包括液晶显示面板50、安装于液晶显示面板50背部的背光模组、以及遮盖于背光模组的外侧的罩体30。其中，罩体30上开设有与开口1311相对应的散热孔31。
综上所述，本案的工作原理在于：光源固定在热沉上，光源散发的热量通过热沉传递至热沉鳍片，横流风扇将气流从风扇表面吸入，然后从径向射出；通入热沉的热沉风槽内，气流在热沉风槽内流动过程中吸热；加入密封盖，保证气流在鳍片之间流动；密封盖尾部设置导流板，使带有热量的气流从规定的方向流向外界；组成整机时，在横流风扇以及出气孔对应的外壳位置设计通气孔，保证良好的冷热气流循环。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相 应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (20)

  1. 一种背光模组的散热装置，其中，包括：
    用以安装光源的热沉，该热沉的一侧形成有热沉风槽，所述热沉风槽的两端分别形成有气体入口和气体出口；
    恒流风扇，其出口对应于所述热沉风槽的气体入口。
  2. 根据权利要求1所述的背光模组的散热装置，其中，所述热沉包括阵列设置的多个鳍片，所述鳍片的外侧遮盖有密封盖，所述密封盖与所述鳍片之间围成所述热沉风槽。
  3. 根据权利要求2所述的背光模组的散热装置，其中，所述气体出口开设于所述密封盖上。
  4. 根据权利要求3所述的背光模组的散热装置，其中，所述气体出口内阵列分布有导流板。
  5. 根据权利要求2所述的背光模组的散热装置，其中，所述鳍片一体成型于所述热沉上。
  6. 根据权利要求2所述的背光模组的散热装置，其中，所述密封盖包括面板、以及自面板三个侧边向同一侧折弯形成的三个侧板，该三个侧板遮挡于所述鳍片的侧边，所述密封盖暴露所述热沉风槽的一侧以形成所述气体入口，所述气体出口开设于所述面板上。
  7. 一种背光模组，包括光源和散热装置，
    其中，所述散热装置包括：
    用以安装光源的热沉，该热沉的一侧形成有热沉风槽，所述热沉风槽的两端分别形成有气体入口和气体出口；
    恒流风扇，其出口对应于所述热沉风槽的气体入口；
    其中，所述光源安装于所述热沉上。
  8. 根据权利要求7所述的背光模组，其中，所述热沉包括阵列设置的多个鳍片，所述鳍片的外侧遮盖有密封盖，所述密封盖与所述鳍片之间围成所述热沉风槽。
  9. 根据权利要求8所述的背光模组，其中，所述气体出口开设于所述密封盖上。
  10. 根据权利要求9所述的背光模组，其中，所述气体出口内阵列分布有导流板。
  11. 根据权利要求8所述的背光模组，其中，所述鳍片一体成型于所述热沉上。
  12. 根据权利要求8所述的背光模组，其中，所述密封盖包括面板、以及自面板三个侧边向同一侧折弯形成的三个侧板，该三个侧板遮挡于所述鳍片的侧边，所述密封盖暴露所述热沉风槽的一侧以形成所述气体入口，所述气体出口开设于所述面板上。
  13. 根据权利要求7所述的背光模组，其中，相邻所述鳍片之间围成沿竖直方向延伸的一个所述热沉风槽，所述气体入口形成于所述热沉风槽的顶端。
  14. 一种显示装置，其中，包括：
    液晶显示面板；
    背光模组，为液晶显示面板提供背光进行显示；所述背光模组包括光源和散热装置，所述散热装置包括恒流风扇和用以安装光源的热沉，所述热沉的一侧形成有热沉风槽，所述热沉风槽的两端分别形成有气体入口和气体出口，所述恒流风扇的出口对应于所述热沉风槽的气体入口，所述光源安装于所述热沉上；
    罩体，遮盖于所述背光模组的外侧，所述罩体上开设有与所述气体出口相对应的散热孔。
  15. 根据权利要求14所述的显示装置，其中，所述热沉包括阵列设置的多个鳍片，所述鳍片的外侧遮盖有密封盖，所述密封盖与所述鳍片之间围成所述热沉风槽。
  16. 根据权利要求15所述的显示装置，其中，所述气体出口开设于所述密封盖上。
  17. 根据权利要求16所述的显示装置，其中，所述气体出口内阵列分布有导流板。
  18. 根据权利要求15所述的显示装置，其中，所述鳍片一体成型于所述热沉上。
  19. 根据权利要求15所述的显示装置，其中，所述密封盖包括面板、以及自面板三个侧边向同一侧折弯形成的三个侧板，该三个侧板遮挡于所述鳍片的侧边，所述密封盖暴露所述热沉风槽的一侧以形成所述气体入口，所述气体出口开设于所述面板上。
  20. 根据权利要求14所述的显示装置，其中，相邻所述鳍片之间围成沿竖直方向延伸的一个所述热沉风槽，所述气体入口形成于所述热沉风槽的顶端。
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