WO2017088464A1 - 散热组件及背光模组 - Google Patents

散热组件及背光模组 Download PDF

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Publication number
WO2017088464A1
WO2017088464A1 PCT/CN2016/086834 CN2016086834W WO2017088464A1 WO 2017088464 A1 WO2017088464 A1 WO 2017088464A1 CN 2016086834 W CN2016086834 W CN 2016086834W WO 2017088464 A1 WO2017088464 A1 WO 2017088464A1
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WIPO (PCT)
Prior art keywords
heat dissipation
contact portion
plate
contact
heat
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PCT/CN2016/086834
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English (en)
French (fr)
Inventor
付常佳
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乐视控股（北京）有限公司
乐视致新电子科技（天津）有限公司
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Publication of WO2017088464A1 publication Critical patent/WO2017088464A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • 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

Definitions

  • the embodiment of the present invention relates to a heat dissipating component and a backlight module, and more particularly to a heat dissipating component and a backlight module capable of rapidly dissipating heat.
  • TV television
  • the current TV appearance improvement trend is roughly the pursuit of narrow borders and thin thickness, that is, the viewing screen is enlarged, and the thickness of the television is thin.
  • the existing TV heat dissipation structure is as shown in FIG. 1 , and includes a heat dissipation plate 1 , a back plate 5 , a base 3 , and a connection plate 4 .
  • the heat dissipation plate 1 is disposed on the back plate 5 , and the light source 2 is disposed thereon, and the base 3 passes through the connection plate. 4 is connected to the backing plate 5 to support the backing plate 5 and conduct heat from the light source 2 into the air.
  • the inventors have found that at least the following problems exist in the prior art: as the thickness of the TV becomes thinner, the space of the internal heat dissipation structure of the TV becomes smaller and smaller, and only the heat dissipation plate and the module back plate are used for heat dissipation. Far from enough.
  • the heat conduction path is: light source heat ⁇ heat sink ⁇ module back plate ⁇ connecting plate ⁇ base, because the path is too much, and the contact area between the base iron and the back plate is small, the heat conduction is to the end. There is very little heat dissipation from the base to the air, and the base contributes little to the heat dissipation of the TV. Therefore, the existing TV heat dissipation structure is far from meeting the new TV design requirements.
  • One of the objects of the embodiments of the present application is to provide a heat dissipation assembly capable of rapidly transferring heat generated by a light source to reduce heat inside the TV and a backlight module having the same.
  • An embodiment of the present application provides a heat dissipation assembly including a base, a back plate, and a heat dissipation plate.
  • the heat dissipation plate is provided with a heating element and disposed in the back plate, and the base is connected to the back plate to support the a back plate and the heat dissipation plate, the base includes a bottom portion and a contact portion connected to the bottom portion, and the back plate is formed with at least one opening portion, and the contact portion is nested in the opening portion to The heat dissipation plate connects and supports the back plate.
  • the contact portion is formed with a contact surface that is in contact with the heat dissipation plate, and the contact surface has a shape that is adapted to the opening portion.
  • the back plate is formed with a symmetric first opening portion and a second opening portion on the lower side
  • the contact portion includes a first contact portion and a second contact portion, the first contact portion and the second portion
  • the contact portions are respectively nested in the first opening portion and the second opening portion to be connected to the heat dissipation plate.
  • the contact portion is integrally formed or movably connected to the bottom.
  • the contact portion is formed with a connection end connected to the bottom portion, and the bottom portion is formed with a receiving portion for accommodating the connection end.
  • first contact portion and the second contact portion are integrally formed or movably connected to the bottom portion.
  • first contact portion and the second contact portion are respectively formed with a first connection end and a second connection end connected to the bottom portion, and the bottom portion is formed with a first accommodation for accommodating the connection end And a second receiving portion.
  • the contact portion is detachably connected to the heat dissipation plate.
  • the heating element is a light source.
  • An embodiment of the present application further provides a backlight module including the above heat dissipation component.
  • the heat dissipating component of the embodiment of the present application tightly combines the base with the internal heat dissipation plate of the module, and transmits the heat of the heat dissipation plate to the outside of the TV through the base, thereby reducing the internal heat of the TV and improving the reliability of the TV.
  • FIG. 1 is a schematic view of a conventional heat dissipation structure
  • FIG. 2 is a top plan view of a heat dissipation structure according to an embodiment of the present application
  • FIG. 3 is a side view showing the structure of the heat dissipating component of the second embodiment of the present application.
  • FIG. 4 is a schematic rear view of the heat dissipating component of the second embodiment of the present application.
  • the base 3 includes a base 3, a back plate 5, and a heat dissipation plate 1.
  • the heat dissipation plate 1 is provided with a heating element and is disposed in the back plate 5, and the base 3 It is connected to the back plate 5 to support the back plate 5 and the heat dissipation plate 1.
  • the base 3 may include a bottom portion 32 and a contact portion 31 connected to the bottom portion, and the back plate 5 may be formed with at least one opening portion 6 which is nested in the opening portion 6 to connect with the heat dissipation plate 1 and support the backing plate 5.
  • FIG. 3 is a side view showing the structure of the heat dissipating component of the second embodiment of the present application.
  • 4 is a schematic rear view of the heat dissipating component of the second embodiment of the present application.
  • the heat dissipation component of the embodiment is used for the TV backlight module, and includes a base 3 , a back plate 5 , and a heat dissipation plate 1 .
  • the heat dissipation plate 1 is disposed in the back plate 5 , and the heat dissipation plate 1 is
  • the other structures of the backlight module such as a light guide plate, enclose a heat dissipation space, and the base 3 and the back plate 5 are connected to support the back plate 5 and the heat dissipation plate 1.
  • the heat dissipation plate 1 is provided with a heating element, such as the light source 2, and the light source 2 may be an LED, but is not limited thereto.
  • the base 3 may include a bottom portion 32 and a contact portion 31 connected to the bottom portion, and the back plate 5 may be formed with at least one opening portion 6 which is nested in the opening portion 6 to connect with the heat dissipation plate 1 and support the back plate 5,
  • the contact portion may have a contact surface in contact with the heat dissipation plate, and the contact surface may have a shape adapted to the opening portion to increase the contact area.
  • the size of the contact surface ie, the opening portion
  • the size of the contact surface is not particularly limited in the present application, and can be set according to the actual size of the TV. For a 50-inch television, a contact surface having an area of 20 cm (length) * 15 cm (width) can be set. .
  • the contact portion is nested in the opening to be in close contact with the heat dissipation plate while supporting the backing plate.
  • the contact area between the contact portion 31 and the heat dissipation plate 1 becomes large, and the heat generated by the light source 2 can be quickly diffused from the heat dissipation space into the air.
  • the shape of the opening portion is not particularly limited in the present application, and may be any shape such as a square shape, an elliptical shape, or a rhombic shape.
  • the contact portion 3 and the heat dissipation plate 1 can be fixedly connected by a fixing device, such as a screw. And forming a lock connection, for example, a contact connection between the contact portion 3 and the heat dissipation plate 1 can be formed, that is, a concave hole can be formed in the heat dissipation plate, and a contact post to be fitted is formed in the contact portion 3, and the concave hole is formed through the concave hole The cooperation between the posts is to achieve close contact between the two, but is not limited thereto.
  • a symmetric first opening portion and a second opening portion may be formed on a lower side of the back plate 5, and at this time, the contact portion 31 may include a first contact portion and a second contact portion.
  • the first contact portion and the second contact portion are respectively nested in the first opening portion and the second opening portion to be tight with the heat dissipation plate Close contact.
  • the contact area can be increased, and on the other hand, the back plate can be supported more stably, thereby improving stability.
  • the base may be formed of a material that easily transfers heat, and the contact portion may be integrally formed or detachably coupled to the bottom to facilitate mounting.
  • the contact portion 31 may be formed with a connection end connected to the bottom portion 32, and the bottom portion 32 is formed with a receiving portion for receiving the connection end, such as a through hole or a groove into which the connection end can be inserted
  • the contact portion is fixed to the bottom to support the back plate 5.
  • the number of connecting ends and receptacles can be adapted to the number of contacts.
  • the heat dissipation component of the embodiment of the present application has a hollowed out structure corresponding to the position of the connection plate on the module back plate, and the base and the connection plate are designed as an integrated structure, and the base and the heat dissipation plate pass through.
  • the screws and the like form a locking connection, so that the heat conduction path of the light source is: heat of the light source ⁇ heat sink ⁇ base, so that the heat conduction path is less than the existing design, and the contact between the base and the heat sink is tight and the contact area is large. In this way, more heat is transferred from the heat sink to the base, and heat is conducted to the outside of the TV through the base, and the heat is taken away by the outside air, thereby reducing the internal heat of the TV and improving the reliability of the TV.
  • the embodiment of the present application further provides a backlight module, which may include the heat dissipation component described in the above embodiments.
  • a backlight module which may include the heat dissipation component described in the above embodiments.
  • Other structures of the backlight module are prior art, and detailed descriptions thereof are omitted herein.
  • modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment.
  • the modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components.
  • any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined.
  • Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.
  • "an embodiment," or "an embodiment," or "one or more embodiments" as used herein means that the particular features, structures, or characteristics described in connection with the embodiments are included in at least one embodiment of the present application.
  • phrase "in one embodiment" is not necessarily referring to the same embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种散热组件及背光模组，属于散热组件技术领域，散热组件包括底座（3）、背板（5）和散热板（1），所述散热板（1）上设置有发热元件且安置于所述背板（5）内，所述底座（3）与所述背板（5）连接以支撑所述背板（5）和所述散热板（1），所述底座（3）包括底部（32）与所述底部连接的接触部（31），所述背板（5）上至少形成有一个开口部（6），所述接触部（31）嵌套在所述开口部（6）中以与所述散热板（1）连接并支撑所述背板（5）。该散热组件能够快速将光源产生的热量进行传播以降低TV内部热量。

Description

散热组件及背光模组
交叉引用
本申请引用于2015年11月26日提交的专利名称为“散热组件及背光模组”的第201520965984.7号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请实施例涉及一种散热组件及背光模组，尤其涉及一种能够快速散热的散热组件及背光模组。
背景技术
随着人们对视觉美感的追求，希望观看屏幕越大越好，以体验丰富的视觉效果，因此，为满足此要求，各厂商争相对电视(TV)的外观进行改进。目前的TV外观改进趋势大致为对窄边框和薄厚度的追求，即观看屏幕大型化，电视厚度薄型化。
现有的TV散热结构如图1所示，包括散热板1、背板5、底座3和连接板4，散热板1设置在背板5上，其上安置有光源2，底座3通过连接板4与背板5连接，以支撑背板5，并将光源2发出的热量传导到空气中。在实现本申请过程中，发明人发现现有技术中至少存在如下问题：随着TV的厚度的变薄，TV内部散热结构空间越来越小，只靠散热板、模组背板来散热已经远远不够。现有底座结构设计方案下，热量传导的路径为：光源热量→散热板→模组背板→连接板→底座，由于路径太多，且底座铁与背板间接触面积较小，热量传导到底座且由底座带到空气散热的很少，底座对TV散热贡献极小，因此，现有的TV散热结构远远不能满足新的TV设计需求。
发明内容
本申请实施例的目的之一在于提供一种能够快速将光源产生的热量进行传播以降低TV内部热量的散热组件及具有其的背光模组。
本申请实施例采用的技术方案如下：
本申请的实施例提供一种散热组件，包括底座、背板和散热板，所述散热板上设置有发热元件且安置于所述背板内，所述底座与所述背板连接以支撑所述背板和所述散热板，所述底座包括底部和与所述底部连接的接触部，所述背板上至少形成有一个开口部，所述接触部嵌套在所述开口部中以与所述散热板连接并支撑所述背板。
可选地，所述接触部形成有与所述散热板相接触的接触面，所述接触面具有与所述开口部相适配的形状。
可选地，所述背板在下侧形成有对称的第一开口部和第二开口部，所述接触部包括第一接触部和第二接触部，所述第一接触部和所述第二接触部分别嵌套在所述第一开口部和所述第二开口部中，以与所述散热板连接。
可选地，所述接触部与所述底部一体形成或活动连接。
可选地，所述接触部形成有与所述底部连接的连接端，所述底部上形成有容纳所述连接端的容纳部。
可选地，所述第一接触部和所述第二接触部与所述底部一体形成或活动连接。
可选地，所述第一接触部和所述第二接触部分别形成有与所述底部连接的第一连接端和第二连接端，所述底部上形成有容纳所述连接端的第一容纳部和第二容纳部。
可选地，所述接触部与所述散热板可拆卸地连接。
可选地，所述发热元件为光源。
本申请的实施例还提供一种背光模组，包括上述的散热组件。
本申请实施例的散热组件使底座与模组内部散热板紧密结合，把散热板的热量通过底座传导到TV外部，从而降低TV内部热量，提高TV可靠性。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是现有的散热结构示意图；
图2为本申请实施例一散热结构俯视示意图；
图3是本申请实施例二散热组件的侧视结构示意图；
图4是本申请实施例二散热组件的后视结构示意图。
具体实施方式
下面将参照附图更详细地描述本申请的示例性实施例。虽然附图中显示了本申请的示例性实施例，然而应当理解，可以以各种形式实现本申请而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本申请，并且能够将本申请的范围完整的传达给本领域的技术人员。
实施例一
图2为本申请实施例一散热结构俯视示意图；如图2所示，其包括底座3、背板5和散热板1，散热板1上设置有发热元件且安置于背板5内，底座3与背板5连接以支撑背板5和散热板1。底座3可包括底部32和与底部连接的接触部31，背板5上可形成有至少一个开口部6，接触部31嵌套在开口部6中以与散热板1连接并支撑背板5。
实施例二
图3是本申请实施例二散热组件的侧视结构示意图。图4是本申请实施例二散热组件的后视结构示意图。
如图3、图4所示，本实施例的散热组件，用于TV背光模组上，包括底座3、背板5和散热板1，散热板1安置于背板5内，散热板1可与背光模组的其他结构，如导光板等围成散热空间，底座3与背板5连接以支撑背板5和散热板1。其中，散热板1上设置有发热元件，如光源2，光源2可选可为LED，但并不局限于此。底座3可包括底部32和与底部连接的接触部31，背板5上可形成有至少一个开口部6，接触部31嵌套在开口部6中以与散热板1连接并支撑背板5，接触部可具有与散热板相接触的接触面，接触面可为与开口部相适配的形状，以增大接触面积。本申请对接触面(即开口部)的大小没有特别限制，可根据TV的实际尺寸来进行设定，如对于50寸的电视，可设置面积为20cm(长)*15cm(宽)的接触面。
也就是说，在本申请中，通过在背板5中凿设开口，使得接触部嵌套在该开口中，在支撑背板的同时以与散热板紧密接触。如此，接触部31与散热板1之间的接触面积变大，从而能够将光源2产生的热量迅速地从散热空间扩散到空气中。本申请对开口部的形状没有特别限定，可为方形、椭圆形或菱形等任何形状。
为将接触部3稳固地嵌套在背板5中以与散热板1紧密接触以及稳靠地支撑背光模组，接触部3与散热板1之间可通过固定装置固定连接，如可通过螺钉等形成锁附连接，又例如，接触部3与散热板1之间可形成卡合连接，即可在散热板中开设凹孔，在接触部3形成想适配的卡柱，通过凹孔与卡柱之间的配合以实现两者之间的紧密接触，但并不限于此。
在本申请的其他任一实施例中，可在背板5的下侧形成有对称的第一开口部和第二开口部，此时，接触部31可包括第一接触部和第二接触部，第一接触部和第二接触部分别嵌套在第一开口部和第二开口部中，以与散热板紧 密接触。这样，通过两个接触部与散热板相接触，一方面能够增大接触面积，另一方面可更稳靠的支撑背板，提高稳定性。当然，也可仅设置一个接触部或者三个接触部等。
在本申请中，底座可由容易传播热量的材质形成，接触部可与底部一体形成或可拆卸地连接，以便于安装。
在可拆卸连接的情况下，接触部31可形成有与底部32连接的连接端，底部32上形成有容纳连接端的容纳部，如通孔或凹槽，连接端可被插入到该容纳部中以将接触部固定到底部上，以支撑背板5。连接端和容纳部的数目可与接触部的数目相适配。
相比于现有技术中的散热结构，本申请实施例的散热组件在模组背板上对应安装连接板的位置挖空结构，底座和连接板设计为一体结构，底座和散热板之间通过螺钉等形成锁附连接，从而使得光源的热量传导的路径为：光源热量→散热板→底座，这样，热量传导路径比现有设计方案少，底座与散热板之间接触紧密且接触面积大，如此会有更多的热量由散热板传导到底座上，热量再通过底座传导到TV外部，由外部空气把热量带走，从而降低TV内部热量，提高TV可靠性。
此外，本申请实施例还提供一种背光模组，可包括上述实施例所描述的散热组件，该背光模组的其他结构为现有技术，在此省去对它们的详细介绍。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本申请的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
类似地，应当理解，为了精简本申请并帮助理解各个发明方面中的一个或多个，在上面对本申请的示例性实施例的描述中，本申请的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开 的方法解释成反映如下意图：即所要求保护的本申请要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说，如下面的权利要求书所反映的那样，发明方面在于少于前面公开的单个实施例的所有特征。因此，遵循具体实施方式的权利要求书由此明确地并入该具体实施方式，其中每个权利要求本身都作为本申请的单独实施例。
本领域那些技术人员可以理解，可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件，以及此外可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者单元中的至少一些是相互排斥之外，可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述，本说明书(包括伴随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。
此外，本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本申请的范围之内并且形成不同的实施例。例如，在下面的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本申请的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本申请的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并 未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
应该注意的是上述实施例对本申请进行说明而不是对本申请进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本申请可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。

Claims (10)

  1. 一种散热组件，其特征在于，包括底座、背板和散热板，所述散热板上设置有发热元件且安置于所述背板内，所述底座与所述背板连接以支撑所述背板和所述散热板，所述底座包括底部和与所述底部连接的接触部，所述背板上至少形成有一个开口部，所述接触部嵌套在所述开口部中以与所述散热板连接并支撑所述背板。
  2. 根据权利要求1所述的散热组件，其特征在于，所述接触部形成有与所述散热板相接触的接触面，所述接触面具有与所述开口部相适配的形状。
  3. 根据权利要求1或2所述的散热组件，其特征在于，所述背板上形成有对称的第一开口部和第二开口部，所述接触部包括第一接触部和第二接触部，所述第一接触部和所述第二接触部分别嵌套在所述第一开口部和所述第二开口部中，以与所述散热板连接。
  4. 根据权利要求1-3中任一项所述的散热组件，其特征在于，所述接触部与所述底部一体形成或活动连接。
  5. 根据权利要求1-4中任一项所述的散热组件，其特征在于，所述接触部形成有与所述底部连接的连接端，所述底部上形成有容纳所述连接端的容纳部。
  6. 根据权利要求3所述的散热组件，其特征在于，所述第一接触部和所述第二接触部与所述底部一体形成或活动连接。
  7. 根据权利要求3或6所述的散热组件，其特征在于，所述第一接触部和所述第二接触部分别形成有与所述底部连接的第一连接端和第二连接端，所述底部上形成有容纳所述连接端的第一容纳部和第二容纳部。
  8. 根据权利要求1-7任一项所述的散热组件，其特征在于，所述接触部与所述散热板可拆卸地连接。
  9. 根据权利要求1至8任一项所述的散热组件，其特征在于，所述散热 元件为光源。
  10. 一种背光模组，其特征在于，包括权利要求1至9任一项所述的散热组件。
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JP2006227513A (ja) * 2005-02-21 2006-08-31 Matsushita Electric Ind Co Ltd 表示装置
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JP2005338178A (ja) * 2004-05-24 2005-12-08 Sony Corp 液晶ディスプレイ装置
JP2006227513A (ja) * 2005-02-21 2006-08-31 Matsushita Electric Ind Co Ltd 表示装置
CN101188920A (zh) * 2007-11-19 2008-05-28 京东方科技集团股份有限公司 显示装置
CN102588839A (zh) * 2012-02-16 2012-07-18 深圳市华星光电技术有限公司 一种背光模组及采用该背光模组的液晶显示装置
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