WO2014032273A1 - 背光模组及散热装置 - Google Patents

背光模组及散热装置 Download PDF

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Publication number
WO2014032273A1
WO2014032273A1 PCT/CN2012/080840 CN2012080840W WO2014032273A1 WO 2014032273 A1 WO2014032273 A1 WO 2014032273A1 CN 2012080840 W CN2012080840 W CN 2012080840W WO 2014032273 A1 WO2014032273 A1 WO 2014032273A1
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WO
WIPO (PCT)
Prior art keywords
back frame
heat sink
backlight module
heat
panel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/080840
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English (en)
French (fr)
Inventor
吴泽鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/583,221 priority Critical patent/US8593041B1/en
Publication of WO2014032273A1 publication Critical patent/WO2014032273A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085—Means for removing heat created by the light source from the package
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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 invention relates to a heat dissipation technology for a display, in particular to a heat dissipation device, and to 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 to be arranged on a printed circuit board (PCB) surface to form an LED strip (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
  • FIG. 1 is a schematic cross-sectional structural view of a heat sink of a backlight module in the prior art.
  • the heat sink 100 includes a light source 110 , a heat sink 120 , and a back frame 130 .
  • the heat source 110 is in contact with the heat sink 120.
  • the heat sink 120 heats the heat generated by the light source 110 to the back frame 130 to dissipate heat through the back frame 130, and the heat dissipation effect is not satisfactory.
  • the invention provides a backlight module and a heat dissipation device, which can solve the problem that the heat dissipation effect of the heat dissipation device of the backlight module in the prior art is not ideal.
  • a technical solution adopted by the present invention is to provide a heat dissipation device for a backlight module, wherein the heat dissipation device is configured to dissipate heat from a light source, including a heat sink and a back frame, and the light source and the The heat sink is in contact with, the back frame is provided with an opening, the heat sink includes an inner plate and an outer plate, the inner plate is disposed at an inner side of the back frame, and the outer plate protrudes from the opening, Both side edges of the outer panel are connected to the inner panel, and the middle of the outer panel is spaced apart from the inner panel.
  • a technical solution adopted by the present invention is to provide a heat dissipation device for a backlight module, wherein the heat dissipation device is configured to dissipate heat from a light source, including a heat sink and a back frame, and the light source is in contact with the heat sink.
  • the back frame and the heat sink form an air flow passage protruding from the plane of the back frame.
  • the airflow through groove has a hollow rectangular shape or a hollow arc shape, is closed at all sides, and both ends are open to the outside atmosphere.
  • the heat sink is made of an aluminum material or an electrolytic lead-lead galvanized steel sheet material.
  • the back frame is provided with an opening
  • the heat sink includes an inner plate and an outer plate
  • the inner plate is disposed at an inner side of the back frame
  • the outer plate protrudes from the opening
  • both sides of the outer plate The side is connected to the inner panel
  • the middle of the outer panel is spaced apart from the inner panel.
  • the opening is provided between the back frame.
  • the outer panel is in the shape of a trough or an arc and is integrally formed with the inner panel.
  • the back frame is stamped with an outer protruding groove
  • the heat sink covers the outer protruding groove on the inner side of the back frame to form the air flow through groove protruding from the plane of the back frame.
  • the outer protrusion groove has a groove shape or an arc shape.
  • a backlight module which includes a heat dissipating device for dissipating heat from a light source, including a heat sink and a back frame, the light source In contact with the heat sink, the back frame and the heat sink form an air flow passage protruding from the plane of the back frame.
  • the invention has the beneficial effects that the backlight module and the heat dissipating device disclosed by the invention have the air flow channel structure, which improves the heat dissipation effect and prolongs the life of the light source.
  • FIG. 1 is a schematic cross-sectional structural view of a heat sink of a backlight module in the prior art
  • FIG. 2 is a schematic cross-sectional structural view of a heat dissipating device according to a first embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional structural view of a heat sink according to a second embodiment of the present invention.
  • Fig. 4 is a schematic cross-sectional structural view showing a heat dissipating device of a third embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional structural view of a heat dissipating device according to a first embodiment of the present invention.
  • a first embodiment of the present invention provides a heat dissipation device 200 for a backlight module.
  • the heat dissipation device 200 is configured to dissipate heat from a light source 210, including a heat sink 220 and a back frame 230.
  • the light source 210 is in contact with the heat sink 220.
  • the back frame 230 is provided with an opening (not labeled).
  • the heat sink 220 is provided with an air flow through slot 222. The air flow through slot 222 protrudes from the opening, and the light source 210 works. The heat generated at the time is dissipated by the heat sink 220.
  • the light source 210 typically employs a light bar comprised of LEDs.
  • the back frame 230 includes a back plate 232 and a side plate 234 perpendicular to the edge of the back plate 232.
  • the back plate 232 is provided with an opening which is larger adjacent to the side plate 234.
  • the heat sink 220 can be integrally formed by using an excellent heat dissipating material such as an aluminum material or an electrolytic lead-lead galvanized steel sheet.
  • the heat sink 220 includes an inner plate 224 and an outer plate 226.
  • the inner plate 224 is disposed on the inner side of the back frame 230 to close the opening. As shown in FIG. 2, the inner plate 224 has an L-shaped cross section, including a closed opening.
  • the outer plate 226 protrudes from the opening, and the two sides of the outer plate 226 are connected to the inner plate 224.
  • the middle of the outer plate 226 is spaced apart from the inner plate 224 to form an air flow passage 222.
  • the air flow through groove 222 is closed around, and the two ends (perpendicular to the paper surface) are open to the outside atmosphere and protrude from the plane of the back frame 230, so that external air can be convected during heat dissipation work, which greatly improves the heat sink 200. Cooling efficiency.
  • the airflow through slot 222 has a hollow rectangular shape.
  • the implementation of the present invention is not limited thereto.
  • the airflow through slot 222 may also have a hollow bow shape. That is, the structure of the inner panel 224 is constant, and the cross section of the outer panel 226 is an arc shape, which also forms the gas convection effect described above.
  • FIG. 3 is a schematic cross-sectional structural diagram of a heat dissipation device 300 according to a second embodiment of the present invention.
  • a second embodiment of the present invention provides a heat dissipation device 300 for a backlight module.
  • the heat dissipation device 300 is configured to dissipate heat from a light source 310, including a heat sink 320 and a back frame 330.
  • the light source 310 is in contact with the heat sink 320.
  • the back frame 330 is provided with an opening (not labeled).
  • the heat sink 320 is provided with an air flow through groove 322. The air flow through groove 322 protrudes from the opening, and the light source 310 is generated when the light source 310 is operated. The heat is dissipated by the heat sink 320.
  • the light source 310 typically employs a light bar comprised of LEDs.
  • the back frame 330 includes a back plate 332 and a side plate 334 perpendicular to the edge of the back plate 332.
  • the back plate 332 is provided with an opening. The opening is disposed at an intermediate portion of the back plate 332 to avoid the edge of the back plate 332. Thus, the thickness of the edge of the back frame 330 may not be affected.
  • the heat sink 320 can be integrally formed by using an excellent heat dissipating material such as an aluminum material or an electrolytic lead-lead galvanized steel sheet.
  • the heat sink 320 includes an inner plate 324 and an outer plate 326.
  • the inner plate 324 is disposed on the inner side of the back frame 330 to close the opening. As shown in FIG. 2, the inner plate 324 has an L-shaped cross section, including a closed opening.
  • the outer plate 326 protrudes from the opening, and the two sides of the outer plate 326 are connected to the inner plate 324.
  • the middle of the outer plate 326 is spaced apart from the inner plate 324 to form an air flow through groove 322. Closed, the two ends (perpendicular to the direction of the paper) are open to the outside atmosphere, and protrude from the plane of the back frame 330, and the external gas can be convected during the heat dissipation operation, which greatly improves the heat dissipation efficiency of the heat sink 300.
  • the airflow channel 322 has a hollow rectangular shape.
  • the implementation of the present invention is not limited thereto.
  • the airflow channel 322 may also have a hollow bow shape. That is, the structure of the inner plate 324 is constant, and the cross section of the outer plate 326 is an arc shape, and the above-mentioned gas convection can also be formed to improve the heat dissipation efficiency.
  • FIG. 4 is a schematic cross-sectional structural view of a heat dissipating device according to a third embodiment of the present invention.
  • a third embodiment of the present invention provides a heat dissipation device 400 for a backlight module.
  • the heat dissipation device 400 is configured to dissipate heat from a light source 410, including a heat sink 420 and a back frame 430.
  • the light source 410 is in contact with the heat sink 420.
  • the back frame 430 includes a back plate 432 and a side plate 434 perpendicular to an edge of the back plate 432. Further, the back plate 432 is stamped with an outer protrusion 436. The outer protrusion 436 is preferably located at an intermediate portion of the back plate 332 so as not to affect the thickness of the edge of the back frame 330.
  • the outer protrusion groove 436 is surrounded by the first plate body 4321, the second plate body 4322, and the third plate body 4323.
  • the two ends of the outer protrusion groove 436 (perpendicular to the plane of the paper) are open to the outside world, and generally pass through. Pressing and forming, the heat sink 420 covers the outer protrusion groove 436 inside the back frame 430 to form an air flow through groove protruding from the plane of the back frame 430.
  • the air flow through the groove is closed, and the two ends are communicated, thereby greatly improving the heat dissipation device. 400 heat dissipation efficiency.
  • the air flow through groove has a hollow rectangular shape.
  • the implementation of the present invention is not limited thereto.
  • the air flow through groove may also be punched into a hollow bow shape.
  • the gas convection described above can be formed to improve heat dissipation efficiency.
  • the present invention further provides a backlight module including the heat dissipation device described in the above embodiments.
  • the backlight module and the heat dissipating device disclosed in the present invention adopt an air flow channel structure protruding from the plane of the back plate, compared to the heat dissipation of the back plate only in the prior art. , greatly improving the heat dissipation effect and prolonging the life of the light source.

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

Description

背光模组及散热装置
【技术领域】
本发明涉及显示器散热技术，特别涉及一种散热装置，还涉及一种背光模组。
【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。光源工作时发热较大，需要相应的散热装置。
请参阅图1，图1是现有技术中背光模组的散热装置的简化截面结构示意图。如图1所示，该散热装置100包括光源110、热沉120以及背框130。
其中，该光源110与该热沉120相接触，该热沉120将该光源110产生的热量导热至背框130通过背框130进行散热，其散热效果并不理想。
【发明内容】
本发明提供一种背光模组及散热装置，能够解决现有技术中背光模组的散热装置散热效果不理想的问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组的散热装置，其中，所述散热装置用于对光源进行散热，包括热沉以及背框，所述光源与所述热沉相接触，所述背框设有开口，所述热沉包括内板和外板，所述内板设于所述背框的内侧，所述外板突出于所述开口，所述外板的两侧边与所述内板相连接，所述外板的中间与所述内板间隔开。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组的散热装置，该散热装置用于对光源进行散热，包括热沉以及背框，该光源与该热沉相接触，该背框与该热沉构成突出于该背框平面的气流通槽。
根据本发明一优选实施例，该气流通槽呈空心矩形或空心弓形状，四周封闭，两端与外界大气相通。
根据本发明一优选实施例，该热沉采用铝材料或电解亚铅镀锌钢板材料。
根据本发明一优选实施例，该背框设有开口，该热沉包括内板和外板，该内板设于该背框的内侧，该外板突出于该开口，该外板的两侧边与该内板相连接，该外板的中间与该内板间隔开。
根据本发明一优选实施例，该开口设于该背框中间部位。
根据本发明一优选实施例，该外板呈槽形或弧形状，与该内板一体成形。
根据本发明一优选实施例，该背框冲压有外突槽，该热沉在该背框内侧封盖该外突槽，构成突出于该背框平面的该气流通槽。
根据本发明一优选实施例，该外突槽呈槽形或弧形状。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种背光模组，该背光模组包括散热装置，该散热装置用于对光源进行散热，包括热沉以及背框，该光源与该热沉相接触，该背框与该热沉构成突出于该背框平面的气流通槽。
本发明的有益效果是：区别于现有技术的情况，本发明公开的背光模组及散热装置由于采用了气流通槽结构，提升了散热效果，延长了光源的寿命。
【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，其中：
图1是 现有技术中一种背光模组的散热装置的简化截面结构示意图；
图2是 本发明第一实施例的散热装置的简化截面结构示意图；
图3是 本发明第二实施例的散热装置的简化截面结构示意图；
图4是 本发明第三实施例的散热装置的简化截面结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，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。
请参阅图2，图2是本发明第一实施例的散热装置的简化截面结构示意图。
如图2所示，本发明第一实施例提供一种背光模组的散热装置200，该散热装置200用于对光源210进行散热，包括热沉220以及背框230。
其中，该光源210与该热沉220相接触，该背框230设有开口（未标号），该热沉220设有气流通槽222，该气流通槽222突出于该开口，该光源210工作时产生的热量由该热沉220进行散热。
具体而言，该光源210通常采用由LED组成的灯条。该背框230包括背板232和垂直于该背板232边缘的侧板234，该背板232上设有开口，该开口较大，临近该侧板234。
该热沉220可采用铝材料或电解亚铅镀锌钢板等优良的散热材料一体成型。该热沉220包括内板224和外板226，该内板224设于该背框230的内侧，封闭该开口，如图2所示，该内板224的截面呈L型，包括封闭开口的主体板2241和垂直于该主体板2241侧边的安装板2242，该安装板2242用于设置光源210。该外板226突出于该开口，该外板226的两侧边与该内板224相连接，该外板226的中间与该内板224间隔开形成气流通槽222。该气流通槽222四周封闭，两端（垂直于纸面的方向）与外界大气相通，并且突出于背框230平面，在进行散热工作时形成外部气体可对流，极大地提高了散热装置200的散热效率。
在图2所示的实施例中，该气流通槽222呈空心矩形状，然而，本发明的实现方式并不限于此，在其他实施例中，该气流通槽222亦可呈空心弓形状，即内板224的结构不变，而外板226的截面是弧形状，同样可形成上述的气体对流效果。
请参阅图3，图3是本发明第二实施例的散热装置300的简化截面结构示意图。
如图3所示，本发明第二实施例提供一种背光模组的散热装置300，该散热装置300用于对光源310进行散热，包括热沉320以及背框330。
该光源310与该热沉320相接触，该背框330设有开口（未标号），该热沉320设有气流通槽322，该气流通槽322突出于该开口，该光源310工作时产生的热量由该热沉320进行散热。
具体而言，该光源310通常采用由LED组成的灯条。该背框330包括背板332和垂直于该背板332边缘的侧板334，该背板332上设有开口，该开口设于该背板332的中间部位，避开该背板332的边缘，如此可以不影响该背框330边缘的厚度。
该热沉320可采用铝材料或电解亚铅镀锌钢板等优良的散热材料一体成型。该热沉320包括内板324和外板326，该内板324设于该背框330的内侧，封闭该开口，如图2所示，该内板324的截面呈L型，包括封闭开口的主体板3241和垂直于该主体板3241侧边的安装板3242，该安装板3242用于设置光源310。该外板326突出于该开口，该外板326的两侧边与该内板324相连接，该外板326的中间与该内板324间隔开形成气流通槽322，该气流通槽322四周封闭，两端（垂直于纸面的方向）与外界大气相通，并且突出于背框330平面，在进行散热工作时形成外部气体可对流，极大地提高了散热装置300的散热效率。
在图3所示的实施例中，该气流通槽322呈空心矩形状，然而，本发明的实现方式并不限于此，在其他实施例中，该气流通槽322亦可呈空心弓形状，即内板324的结构不变，而外板326的截面是弧形状，同样可形成上述的气体对流以提高散热效率。
请参阅图4，图4是本发明第三实施例的散热装置的简化截面结构示意图。
如图4所示，本发明第三实施例提供一种背光模组的散热装置400，该散热装置400用于对光源410进行散热，包括热沉420以及背框430。
其中，该光源410与该热沉420相接触，该背框430包括背板432和垂直于该背板432边缘的侧板434，进一步地，该背板432上冲压有外突槽436，该外突槽436优选位于该背板332的中间部位，如此可以不影响该背框330边缘的厚度。
该外突槽436由第一板体4321、第二板体4322、第三板体4323围合，该外突槽436的两端（垂直于纸面的方向）与外界大气相通，一般可通过冲压加工成型，该热沉420在该背框430内侧封盖该外突槽436形成突出于背框430平面的气流通槽，该气流通槽四周封闭，两端相通，可极大地提高散热装置400的散热效率。
在图4所示的实施例中，该气流通槽呈空心矩形状，然而，本发明的实现方式并不限于此，在其他实施例中，该气流通槽亦可冲压成空心弓形状，同样可形成上述的气体对流以提高散热效率。
此外，本发明还提供一种背光模组，该背光模组包括上述实施例中所述的散热装置。
综上所示，本领域技术人员容理解，相较于现有技术中仅通过背板散热而言，本发明公开的背光模组及散热装置由于采用了突出于背板平面的气流通槽结构，极大地提升了散热效果，延长了光源的寿命。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (17)

  1. 一种背光模组的散热装置，其中，所述散热装置用于对光源进行散热，包括热沉以及背框，所述光源与所述热沉相接触，所述背框设有开口，所述热沉包括内板和外板，所述内板设于所述背框的内侧，所述外板突出于所述开口，所述外板的两侧边与所述内板相连接，所述外板的中间与所述内板间隔开。
  2. 一种背光模组的散热装置，其中，所述散热装置用于对光源进行散热，包括热沉以及背框，所述光源与所述热沉相接触，所述背框与所述热沉构成突出于所述背框平面的气流通槽。
  3. 根据权利要求2所述的散热装置，其中，所述气流通槽呈空心矩形或空心弓形状，四周封闭，两端与外界大气相通。
  4. 根据权利要求2所述的散热装置，其中，所述热沉采用铝材料或电解亚铅镀锌钢板材料。
  5. 根据权利要求4所述的散热装置，其中，所述背框设有开口，所述热沉包括内板和外板，所述内板设于所述背框的内侧，所述外板突出于所述开口，所述外板的两侧边与所述内板相连接，所述外板的中间与所述内板间隔开。
  6. 根据权利要求5所述的散热装置，其中，所述开口设于所述背框中间部位。
  7. 根据权利要求5所述的散热装置，其中，所述外板呈槽形或弧形状，与所述内板一体成形。
  8. 根据权利要求4所述的散热装置，其中，所述背框冲压有外突槽，所述热沉在所述背框内侧封盖所述外突槽，构成突出于所述背框平面的所述气流通槽。
  9. 根据权利要求8所述的散热装置，其中，所述外突槽呈槽形或弧形状。
  10. 一种背光模组，其中，所述背光模组包括散热装置，所述散热装置用于对光源进行散热，包括热沉以及背框，所述光源与所述热沉相接触，所述背框与所述热沉构成突出于所述背框平面的气流通槽。
  11. 根据权利要求10所述的背光模组，其中，所述气流通槽呈空心矩形或空心弓形状，四周封闭，两端与外界大气相通。
  12. 根据权利要求10所述的背光模组，其中，所述热沉采用铝材料或电解亚铅镀锌钢板材料。
  13. 根据权利要求12所述的背光模组，其中，所述背框设有开口，所述热沉包括内板和外板，所述内板设于所述背框的内侧，所述外板突出于所述开口，所述外板的两侧边与所述内板相连接，所述外板的中间与所述内板间隔开。
  14. 根据权利要求13所述的背光模组，其中，所述开口设于所述背框中间部位。
  15. 根据权利要求13所述的背光模组，其中，所述外板呈槽形或弧形状，与所述内板一体成形。
  16. 根据权利要求12所述的背光模组，其中，所述背框冲压有外突槽，所述热沉在所述背框内侧封盖所述外突槽，构成突出于所述背框平面的所述气流通槽。
  17. 根据权利要求16所述的背光模组，其中，所述外突槽呈槽形或弧形状。
PCT/CN2012/080840 2012-08-28 2012-08-31 背光模组及散热装置 Ceased WO2014032273A1 (zh)

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