WO2012171150A1 - 一种垂直对流散热器及一种垂直对流散热筒灯 - Google Patents

一种垂直对流散热器及一种垂直对流散热筒灯 Download PDF

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Publication number
WO2012171150A1
WO2012171150A1 PCT/CN2011/001786 CN2011001786W WO2012171150A1 WO 2012171150 A1 WO2012171150 A1 WO 2012171150A1 CN 2011001786 W CN2011001786 W CN 2011001786W WO 2012171150 A1 WO2012171150 A1 WO 2012171150A1
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Prior art keywords
heat sink
vertical convection
heat
vertical
convection
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PCT/CN2011/001786
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English (en)
French (fr)
Inventor
唐林涛
李旭亮
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东莞勤上光电股份有限公司
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Publication of WO2012171150A1 publication Critical patent/WO2012171150A1/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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the field of illumination and heat dissipation technologies, and in particular, to a vertical convection heat sink and a vertical convection heat sink downlight having the same.
  • BACKGROUND OF THE INVENTION In recent years, the technology of LED lighting has developed rapidly, and high-power LED lighting has entered the application stage, but the heat dissipation problem has always been one of the core problems that high-power LED lighting is waiting to be solved. For the efficacy level of existing LEDs, 70% to 80% of the input power is converted into heat.
  • the size of the LED chip is small, if the heat dissipation is poor, the temperature of the LED chip is sharply increased, thereby causing problems such as uneven distribution of thermal stress, reduction in luminous efficiency of the chip, and decrease in lasing efficiency of the phosphor. Moreover, poor heat dissipation can also lead to higher temperature rise of the chip junction, which directly affects the light output efficiency of the chip and the life of the product.
  • heat transfer In today's high-power LED lighting products, heat generally goes through two processes from chip to air: heat transfer, heat loss.
  • the heat generated by the chip is quickly conducted to the heat sink (sheet) or heat pipe by means of gold wire, circuit board, substrate (aluminum base, ceramic base, etc.), thermal paste (pad), etc.
  • the heat sink (slice) or heat pipe is exposed to the air, and the heat is exchanged by convection or radiation to dissipate heat. It can be seen that the heat sink (sheet) or the heat pipe is the final interface for heat exchange between the LED high-power lighting products and the air, and their heat exchange efficiency directly affects the heat dissipation performance of the product.
  • the heat exchange between the radiator (piece) and the air can be divided into active and passive.
  • Active is through Equipment such as electric fans can speed up the air flow in the environment, which increases the heat exchange rate.
  • Equipment such as electric fans can speed up the air flow in the environment, which increases the heat exchange rate.
  • the heat dissipation of the commonly used computer CPU and the heat dissipation of the memory module have the advantages of high efficiency, and the disadvantage is that additional equipment such as an electric fan needs to be added. And need to consume electrical energy, noise, complex structure and so on.
  • Passive does not pass any external equipment, relying on the material and structure of the radiator itself to form a very large heat dissipation surface, so that the heat exchange between the air and the radiator (sheet) is optimal.
  • the current production process of the heat sink mainly has the following several ways: 1.
  • Stripped heat sink; 4 cold extruded heat sink as shown in Figure 5.
  • aluminum extrusion type radiators are widely used.
  • the current LED downlights adopt the above-mentioned passive heat dissipation type heat sinks, which are prone to "heat island effect", and the heat dissipation effect is poor, so improvement is needed.
  • SUMMARY OF THE INVENTION One of the technical problems to be solved by the present invention is to provide a vertical convection heat sink, which solves the problem that the current heat sink is prone to heat island effect and the heat dissipation effect is not very good.
  • a vertical convection heat sink comprising a substrate, and a plurality of heat dissipation fins thermally connected to the substrate at a lower end, the vertical convection heat sink having a plurality of convection channels, The convection channel extends through the upper and lower surfaces of the vertical convection heat sink.
  • the substrate and the heat dissipation fin are integrally formed and thermally connected.
  • the plurality of convection channels are located between the heat dissipation fins and are formed by a plurality of heat dissipation fins.
  • the vertical convection heat sink further includes a frame, and the plurality of convection channels are located between the heat dissipation fin and the frame, and are formed by a plurality of heat dissipation fins and a frame.
  • the cross section of the frame is any one or a combination of a circle, a square, a regular hexagon, a regular octagon, an ellipse, a diamond, a trapezoid, and a triangle.
  • the vertical convection heat sink further includes a frame and a connecting rib, wherein the plurality of convection channels are located between the heat dissipation fins, the frame and the connecting rib, and the heat dissipation fins are common to the frame and the rib form.
  • the frame or the connecting rib has a cross section of any one or a combination of a circle, a square, a regular hexagon, a regular octagon, an ellipse, a diamond, a trapezoid, and a triangle.
  • the substrate is sleeved on the periphery of the bottom of the frame and is thermally connected by means of an interference fit.
  • the surface of the vertical convection heat sink is sprayed with black nano lacquer.
  • the second technical problem to be solved by the present invention is to provide a vertical convection heat-dissipating downlight, which solves the problem that the current LED downlight is not very good due to the use of the existing passive heat sink.
  • the present invention adopts the following technical solutions:
  • a vertical convection heat sink lamp includes a heat sink, and the heat sink is any one of the foregoing vertical convection heat sinks.
  • the beneficial effects of the invention are:
  • the vertical convection heat sink adopting the technical solution of the present invention has a convection passage through the upper and lower surfaces of the heat sink.
  • the vertical convection cooling downlight adopting the vertical convection radiator of the technical scheme of the invention improves the heat dissipation performance of the luminaire while saving material cost and reducing the weight of the luminaire.
  • the vertical convection cooling downlight of the present embodiment can be combined with the original air outlet of the room in addition to being installed as a general downlight, and utilizes the existing air circulation system without any additional energy consumption.
  • DRAWINGS 1 is a schematic structural view of a conventional aluminum extrusion type heat sink
  • FIG. 2 is a schematic structural view of another conventional aluminum extrusion type heat sink
  • FIG. 3 is a schematic structural view of another conventional aluminum extrusion type heat sink
  • FIG. 4 is a schematic structural view of a conventional stripping heat sink
  • Figure 5 is a schematic structural view of a conventional cold extrusion type heat sink
  • FIG. 6 is a schematic view showing a heat island effect formed by a conventional aluminum extrusion type heat sink
  • FIG. 7 is another schematic view showing a heat island effect when a conventional aluminum extrusion type heat sink is in operation
  • FIG. 9 is another schematic structural view of a conventional LED downlight
  • FIG. 10 is a schematic structural view of a bottom angle of a vertical convection heat sink of the first embodiment of the present invention
  • FIG. 11 is a schematic structural view of a top surface of a vertical convection heat sink of the first embodiment of the present invention
  • FIG. 13 is a schematic structural view of a vertical convection heat sink lamp according to Embodiment 1 of the present invention
  • Figure 14 is an exploded view of the vertical convection heat sink lamp in the first embodiment of the present invention.
  • FIG. 15 is a structural schematic view of a 45 degree angle of a bottom surface of a vertical convection heat sink according to Embodiment 2 of the present invention
  • FIG. 16 is a schematic structural view of a top surface of a vertical convection heat sink at a 45 degree angle according to Embodiment 2 of the present invention
  • FIG. 18 is a schematic structural view of a top surface of a vertical convection heat sink of the fourth embodiment of the present invention
  • FIG. 18 is a structural diagram of a 45 degree angle of a top surface of a vertical convection heat sink according to Embodiment 4 of the present invention
  • Embodiment 1 A vertical convection heat sink according to the embodiment, according to the "smoky effect", an existing aluminum extrusion type
  • the structure of the heat sink is improved.
  • the structure of the improved vertical convection heat sink is as shown in FIG. 10 and FIG. 11 , and includes a plurality of heat dissipation fins 11 , and further includes a frame 15 and a connecting rib 16 , and a light source mounting component and a light source.
  • Mounting points 14 are provided on the mounting components. As shown in FIG.
  • the vertical convection heat sink of the present embodiment is significantly different from the conventional aluminum extruded heat sink in that a gap is formed between most of the heat dissipation fins 11 and the frame 15 and the connecting ribs 16. Throughout the heat sink, a number of convection channels 13 are formed.
  • the vertical convection heat sink of the embodiment can form a relatively high air velocity field even under the condition of passive heat dissipation, so that the cold air is fully exchanged with the surface of the heat dissipation fin 11 of the vertical convection heat sink rapidly. Take away heat, thus avoiding the "heat island effect" at the bottom of the radiator.
  • the present invention provides a vertical convection heat sink in which a gap between the heat dissipation fins 11 forms a convection passage 13 penetrating the upper and lower surfaces of the heat sink, and most of the surface area of the heat dissipation fin 11 is exposed to air flow.
  • the position thus creating a "chimney effect" when operating in a vertical convection heat sink, and the higher the temperature of the heat source, the more pronounced the “chimney effect", allowing the hot and cold air to convect vertically, making it easier to carry the heat away quickly.
  • the heat dissipation effect is better than the existing heat sink.
  • the quadrilateral frame 15 is disposed on the periphery of the heat sink, and the intersecting connecting ribs 16 are disposed between the opposite corners of the frame, the strength of the vertical convection heat sink is higher, It is easy to deform due to collision or the like.
  • the frame 15 and the connecting rib 16 are not necessary, and a plurality of convection passages 13 extending through the ends of the heat sink may be formed between the plurality of heat radiating fins 11, which are also within the scope of the present invention, and actually implemented in the present invention.
  • the bezel 15 and the connecting rib 16 in the manner can also be regarded as a kind of heat dissipating fin 11.
  • the surface of the vertical convection heat sink is also sprayed, specifically, the surface of the vertical convection heat sink is sprayed with black nano lacquer.
  • black can increase the ability of the vertical convection heat sink to radiate heat, and the microstructure of the nano lacquer surface can maximize the heat dissipation area of the vertical convection heatsink, thereby further improving the heat exchange capacity with air.
  • a vertical convection heat sink lamp provided by the present embodiment is as shown in FIG. 13 and FIG. 14, and includes: a vertical convection heat sink 1, a lamp cover 2, and a light emitting unit 3.
  • the light-emitting unit 3 may be a single LED lamp 31, or a plurality of LED lamps 31 may be arrayed on one circuit board 30 as shown in FIG.
  • the lampshade 2 of the present embodiment is provided with two buckles 21 on each of its four sides. When mounting, it is only necessary to put the light-emitting unit 3 into the light source mounting member 14, and then cover the lampshade 2, and the buckle of the edge of the lampshade 2 21 The edge of the vertical convection heat sink 1 light source mounting member is fastened, that is, the assembly is completed, which is very convenient.
  • the installed vertical convection cooling downlight is shown in Figure 13.
  • the vertical convection heat sink lamp of the present embodiment uses the vertical convection heat sink 1 provided by the present invention to save the material cost and reduce the weight of the lamp, and also improves the heat dissipation performance of the lamp.
  • the vertical convection cooling downlight of the present embodiment can be combined with the original air outlet of the room in addition to being installed as a general downlight, and utilizes the existing air circulation system without any additional energy consumption.
  • the passive heat dissipation is active heat dissipation, which not only saves the cost of interior decoration, saves energy, but also enhances the effect of air circulation and heat dissipation.
  • Embodiment 2 The vertical convection heat sink of the present invention may have several kinds of deformations in a specific shape. As shown in FIG.
  • FIG. 16 another vertical convection heat sink provided by this embodiment is shown.
  • the vertical convection heat sink in this embodiment differs greatly from the first embodiment in that it is cylindrical as a whole.
  • the heat radiating fins are uniformly radiated from the center outward, and the outermost surface is a cylindrical frame 15 with two cylindrical connecting ribs 16 in the middle, and the connecting ribs 16 are concentrically arranged with the frame 15.
  • the core essence is that the gap between the fins and the frame 15 and the connecting rib 16 forms a convection passage 13 penetrating the upper and lower sides of the radiator, so that a "chimney effect" can also be formed, thereby improving the heat dissipation effect.
  • the light source mounting member and the mounting position 14 are also deformed into an annular shape.
  • the light source mounting member and the mounting position 14 are arranged in a circular shape to make the convection flow smoother, and is particularly suitable for the vertical convection heat sink lamp used for the air outlet.
  • the light emitting unit is also disposed in a ring shape and installed in the mounting position 14. It should be understood that the mounting position 14 can be directly disposed under the frame 15 without separately setting the light source mounting member.
  • the bottom outer wall of the frame 15 can be provided with a flange 17 , and the mounting position 14 can be directly disposed below the flange 17 . It is not necessary to separately set the light source mounting parts.
  • Embodiment 3 A vertical convection heat sink provided by the present embodiment is different from the second embodiment in that, as shown in FIG. 17, the aluminum substrate (not shown) on which the LED is mounted is not placed around the periphery of the frame 15. Instead, it is placed inside the bezel 15. Further, the cylindrical connecting rib 16 as in the second embodiment is not provided.
  • Embodiment 4 A vertical convection heat sink provided by this embodiment is as shown in FIG. 18 , and is different from the second embodiment in that the frame 15 has a rectangular tube shape, and the outer wall flange 17 is also correspondingly arranged into a box. The mounting position of the light-emitting unit is also set to a square shape, and is directly disposed on the bottom surface of the outer wall flange 17.
  • each of the heat radiating fins 11 in the bezel 15 is formed in a checkered shape.
  • the mechanics of a vertical convection radiator of this structure The structure is also very stable and the heat dissipation is very good.
  • the aluminum substrate on which the LEDs are mounted may also be arranged in a square shape or "back" shape.
  • the shape of the heat sink body and the mounting position of the light emitting unit is not limited to the above-mentioned circular and square shapes, but the cross section may be any shape, such as a regular hexagon, a regular octagon, an ellipse, a diamond, Any combination of a trapezoid, a triangle, or the like, as long as a convection passage is formed between the upper and lower end faces of the radiator to enhance the convection and avoid the heat island effect, thereby improving the heat dissipation effect of the radiator and the cylinder
  • the lamp is within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种垂直对流散热器，包括光源安装部件基板，和下端与基板导热连接的若干散热鳍片（11）。垂直对流散热器具有若干贯穿垂直对流散热器的上下表面的对流通道（13）。一种垂直对流散热筒灯包括垂直对流散热器。垂直对流散热器工作时，散热鳍片（11）下端附近的空气被不断加热并上升，同时附近的冷空气会不断补充而产生对流，即使在被动式散热的条件下，也能让冷空气充分与垂直对流散热器的散热鳍片（11）表面发生充分的热交换，迅速带走热量，从而避免产生"热岛效应"，提升散热能力。

Description

一种垂直对流散热器及一种垂直对流散热筒灯
技术领域 本发明涉及照明及散热技术领域， 具体涉及一种垂直对流散热器及具有 该散热器的一种垂直对流散热筒灯。 背景技术 近年来，有关 LED照明的技术发展迅速，大功率 LED照明已经进入到了 应用阶段，但是散热问题一直都是大功率 LED照明滞待解决的核心问题之一。 对于现有 LED的光效水平而言， 输入电能的 70%~80%还会转变成热量。 而且由于 LED芯片的尺寸很小，如果散热不良，则会使 LED芯片的温度急剧 升高， 从而引起热应力分布不均、 芯片发光效率降低、 荧光粉激射效率下降 等问题。 而且散热不良还会导致芯片结的温升较高， 从而直接影响到芯片的 出光效率以及产品的寿命。
众所周知，热量的传递方式有三种：热传导传递（conduction heat transfer )、 热对流传递（convection heat transfer )、 热辐射传递。 现在的大功率 LED照明 产品中， 热量从芯片到空气一般经过两个过程： 热传导、 热散失。 首先， 芯 片产生的热量以热传导的方式， 通过金线、 电路板、 基板（铝基、 陶瓷基等）、 导热胶 （垫） 等， 迅速传导至散热器 （片） 或者热管。 散热器 （片） 或者热 管裸露在空气中， 通过对流或者辐射与空气发生热交换， 从而将热量散失掉。 可见， 散热器 （片） 或者热管是 LED大功率照明产品与空气进行热交换的最 终界面， 它们的热交换效率如何， 直接影响了产品的散热性能。
散热器 （片） 与空气的热交换可以分为主动式与被动式两种。 主动式是通 过电风扇等设备， 加快环境内的空气流动速度， 从而使得热交换速率提高， 如常用的计算机 CPU的散热、 内存条的散热， 其优点是效率高， 缺点是需增 加电风扇等额外设备， 以及需要消耗电能， 噪声大、 结构复杂等。 被动式的 则不通过任何外加设备， 依靠散热器自身的材料与结构， 形成非常大的散热 表面， 使得空气与散热器 （片） 的热交换达到最佳。
当前散热器 （片） 的生产工艺主要有如下几种方式： 1、 如图 1至图 3所 示的铝挤压型散热器； 2、 C型扣片散热器； 3、 如图 4所示的剥片散热器； 4、 如图 5所示的冷挤压散热器。 其中， 被广泛使用的是铝挤压型散热器。
上述四种类型的散热片， 虽然工艺不同， 但其目的是一样的， 即在尽可能 轻的条件下， 追求物理散热表面积的最大化， 从而实现最高的热交换效率。 但共同的问题是忽略了空气流动对于散热性能的重要性， 仅靠辐射散热无法 达到最好的散热效果。 这是因为在被动式散热 （没有外置风扇等设备） 情况 下， 若散热器底部由于与热源接触， 周围空气的温度升高， 根据空气动力学 原理， 由于冷、 热空气所造成的压力差， 散热器底部的空气向上流动， 而冷 空气若不能及时补充到热源附近， 则会如图 6和图 7所示，形成"热岛效应"， 从而导致散热不良。 同理， 若散热器顶部与热源接触， 也不能取得很好的散 热效果， 在此不再详述。
目前的 LED筒灯如图 8和图 9所示， 采用的都是上述被动式散热方式的 散热器， 容易产生 "热岛效应"， 而导致散热效果较差， 因此需要改进。 发明内容 本发明所要解决的技术问题之一是提供一种垂直对流散热器， 解决目前 被动式散热器容易产生热岛效应而导致散热效果不是非常好的问题。 为解决上述技术问题， 本发明采用如下技术方案： 一种垂直对流散热器， 包括基板， 和下端与所述基板导热连接的若干散 热鳍片， 所述垂直对流散热器具有若干对流通道， 所述对流通道贯穿垂直对 流散热器的上下表面。 优选的技术方案中， 所述基板与散热鳍片一体成型而导热连接。 优选的技术方案中， 所述若干对流通道位于散热鳍片之间， 由若干散热 鳍片形成。 优选的技术方案中， 所述垂直对流散热器还包括边框， 所述若干对流通 道位于散热鳍片与边框之间， 由若干散热鳍片与边框共同形成。 进一步优选的技术方案中， 所述边框的截面为圆形、 方形、 正六边形、 正八边形、 椭圆形、 菱形、 梯形、 三角形中的任意一种或者多种的组合。 优选的技术方案中， 所述垂直对流散热器还包括边框和连接筋板， 所述 若干对流通道位于散热鳍片、 边框与连接筋板之间， 由若干散热鳍片与边框 及筋板共同形成。 进一步优选的技术方案中， 所述边框或者连接筋板的截面为圆形、 方形、 正六边形、 正八边形、 椭圆形、 菱形、 梯形、 三角形中的任意一种或者多种 的组合。 更进一步优选的技术方案中， 其特征在于， 所述基板采用过盈配合的方 式套设在所述边框的底部外围而导热连接。 优选的技术方案中， 所述垂直对流散热器的表面喷涂有黑色纳米漆。 本发明所要解决的技术问题之二是相应提供一种垂直对流散热筒灯， 解 决目前 LED筒灯因为采用现有被动式散热器而导致散热效果不是非常好的问 题。 为解决上述技术问题， 本发明采用如下技术方案： 一种垂直对流散热筒灯， 包括散热器， 所述散热器为前述的任意一种垂 直对流散热器。 本发明的有益效果是：
采用了本发明技术方案的垂直对流散热器， 由于设置了贯穿散热器上下 表面的对流通道， 当位于散热鳍片下端的基板将热量传递给散热鳍片的下端 时， 散热鳍片下端会将其附近的空气不断加热并上升， 同时附近的冷空气会 不断补充而产生对流， 从而使得本具体实施方式的垂直对流散热器即使在被 动式散热的条件下， 也能形成比较高的空气流速场， 让冷空气充分与垂直对 流散热器的散热鳍片表面发生充分的热交换， 迅速带走热量， 从而避免了在 散热器底部产生 "热岛效应"， 大大提升了散热能力。 采用了本发明技术方案垂直对流散热器的垂直对流散热筒灯， 在节省材 料成本、 减轻灯具重量的同时， 还提高了灯具的散热性能。 此外， 本具体实 施方式的垂直对流散热筒灯除了作为一般筒灯安装使用外， 还能够和室内原 有的出风口结合， 利用已有的风道循环系统， 在不另外耗费能源的情况下， 变被动式散热为主动式散热， 不但节省了室内装修成本， 节约了能源， 也加 强了空气循环及散热的效果。 附图说明 图 1是一种现有铝挤压型散热器的结构示意图；
图 2是另一种现有铝挤压型散热器的结构示意图；
图 3是又一种现有铝挤压型散热器的结构示意图；
图 4是一种现有剥片散热器的结构示意图；
图 5是一种现有冷挤压型散热器的结构示意图；
图 6是一种现有铝挤压型散热器工作时形成热岛效应的示意图； 图 7是一种现有铝挤压型散热器工作时形成热岛效应的另一示意图； 图 8是一种现有 LED筒灯的结构示意图；
图 9是一种现有 LED筒灯的另一结构示意图；
图 10是本发明实施例一中垂直对流散热器底面 45度角的结构示意图； 图 11是本发明实施例一中垂直对流散热器顶面 45度角的结构示意图； 图 12是图 11中垂直对流散热器去掉两方边框后的结构示意图； 图 13是本发明实施例一中垂直对流散热筒灯的结构示意图；
图 14是本发明实施例一中垂直对流散热筒灯的分解图；
图 15是本发明实施例二中垂直对流散热器底面 45度角的结构示意图； 图 16是本发明实施例二中垂直对流散热器顶面 45度角的结构示意图； 图 17是本发明实施例三中垂直对流散热器顶面 45度角的结构示意图； 图 18是本发明实施例四中垂直对流散热器顶面 45度角的结构示意图； 下面将结合附图对本发明作进一步详述。 具体实施方式 实施例一 本具体实施方式的垂直对流散热器， 根据 "烟図效应"对现有铝挤压型 散热器的结构进行了改进， 改进后的垂直对流散热器的结构如图 10 和图 11 所示， 包括若干个散热鳍片 11， 还包括边框 15和连接筋板 16， 以及光源安 装部件， 光源安装部件上设有安装位 14。 如图 12所示， 本具体实施方式的垂 直对流散热器与现有铝挤压型散热器明显的不同之处在于， 大部分散热鳍片 11与边框 15以及连接筋板 16之间形成的空隙贯穿了整个散热器， 从而形成 了若干对流通道 13。 垂直对流散热器在工作时， 垂直对流散热器底部 （热源 附近） 的冷空气被不断加热后沿着对流通道 13上升， 同时附近的冷空气能够 从对流通道 13的底部迅速的补充， 从而使得本具体实施方式的垂直对流散热 器即使在被动式散热的条件下， 也能形成比较高的空气流速场， 让冷空气充 分与垂直对流散热器的散热鳍片 11表面发生充分的热交换， 迅速带走热量， 从而避免了在散热器底部产生 "热岛效应"。 本具体实施方式提供的一种垂直对流散热器， 由于散热鳍片 11之间的空 隙形成了贯穿散热器上下表面的对流通道 13，并且散热鳍片 11的大部分表面 积都暴露在了空气流动的位置， 因而在垂直对流散热器工作时能够产生 "烟 囱效应"， 而且热源的温度越高， "烟囱效应"越明显， 使得冷热空气能够垂 直自然对流， 更容易迅速将热量带走， 因而散热效果较现有散热器更好。 本具体实施方式的垂直对流散热器， 由于在散热器周缘设置了四边形的 边框 15， 并且在边框的对角之间设置了交叉的连接筋板 16， 因而垂直对流散 热器的强度更高， 不容易因碰撞等导致变形。 当然， 边框 15 和连接筋板 16 并非必要， 多个散热鳍片 11之间也可以形成若干贯穿散热器两端的对流通道 13， 也在本发明的保护范围之内， 而且实际上本具体实施方式中的边框 15和 连接筋板 16本身也可以看作是一种散热鳍片 11。 优选的技术方案中， 还对垂直对流散热器的表面进行喷涂， 具体而言是 采用黑色纳米漆对垂直对流散热器的表面进行喷涂。 实验证明黑色可增加垂 直对流散热器进行辐射散热的能力， 而且纳米漆表面的微结构， 能够实现垂 直对流散热器散热面积的最大化， 从而进一步提升与空气进行热交换的能力。 本具体实施方式提供的一种垂直对流散热筒灯如图 13和图 14所示， 包 括： 垂直对流散热器 1、 灯罩 2和发光单元 3。 其中发光单元 3可以是单个的 LED灯 31， 也可以是如图 13那样， 在一 块电路板 30上阵列多个 LED灯 31。 本具体实施方式的灯罩 2， 在其四边各设置有两个卡扣 21， 安装时只需 要将发光单元 3放入光源安装部件 14内， 然后盖上所述灯罩 2， 灯罩 2边缘 的卡扣 21扣住垂直对流散热器 1光源安装部件的边缘， 即完成了装配， 因而 很是方便。 安装好后的垂直对流散热筒灯如图 13所示。 本具体实施方式的垂直对流散热筒灯， 因为使用了本发明提供的垂直对 流散热器 1， 在节省材料成本、 减轻灯具重量的同时， 还提高了灯具的散热性 能。 此外， 本具体实施方式的垂直对流散热筒灯除了作为一般筒灯安装使用 外， 还能够和室内原有的出风口结合， 利用已有的风道循环系统， 在不另外 耗费能源的情况下， 变被动式散热为主动式散热， 不但节省了室内装修成本， 节约了能源， 也加强了空气循环及散热的效果。 实施例二 本发明的垂直对流散热器， 在具体形状上可以有若干种变形， 如图 15和 图 16所示即为本具体实施方式提供的另一种垂直对流散热器。 本具体实施方式中的垂直对流散热器， 与实施例一的最大不同之处在于 整体呈圆筒形。 各散热鳍片从中心向外辐射均匀分布， 最外面是圆筒形的边 框 15， 中间还有两个圆筒形的连接筋板 16， 而且连接筋板 16与边框 15同心 设置。 当然， 最核心的实质还是散热鳍片与边框 15及连接筋板 16之间的空 隙形成了贯穿散热器上下的对流通道 13， 因而也能够形成"烟囱效应"， 从而 提高散热效果。 相应的， 光源安装部件及安装位 14也变形为圆环状。 本具体 实施方式的垂直对流散热器， 将光源安装部件及安装位 14设置成圆环形， 使 得对流更为顺畅， 尤其适合用于配合出风口使用的垂直对流散热筒灯。 本实 施例中， 发光单元也设置成环形， 安装在安装位 14内。 应当理解， 安装位 14 可以直接设置在边框 15的下方， 而不必单独设置光源安装部件； 同理， 边框 15底部外壁可以设置一突缘 17， 安装位 14可以直接设置在突缘 17的下方， 而不必单独设置光源安装部件。 实施例三 本具体实施方式提供的一种垂直对流散热器如图 17所示， 与实施例二 的不同之处在于， 安装 LED的铝基板 （图中未示出） 不是套在边框 15外围， 而是设置在边框 15的内部。 而且没有设置如实施例二那样的圆筒形连接筋板 16。 实施例四 本具体实施方式提供的一种垂直对流散热器如图 18所示， 与实施例二的 不同之处在于， 边框 15呈方筒形， 外壁突缘 17也相应的设置成了方框形， 发光单元的安装位也设置成方形， 并且直接设置在外壁突缘 17底面。 此外， 边框 15 内的各散热翅片 11形成方格状。 此种结构的垂直对流散热器的力学 结构也非常稳定， 而且散热效果很好。 应当理解， 作为本实施例的一个替代 方案， 安装 LED的铝基板也可以设置成方框形状或 "回"定形。 最后需要说明的是， 散热器主体及发光单元安装位的形状并不仅限于以 上举例的圆形和方形， 而是其截面可以为任意形状， 比如正六边形、 正八边 形、 椭圆形、 菱形、 梯形、 三角形等中的任意一种及多种的组合， 只要在散 热器上下两端面之间形成贯通的对流通道， 用以加强对流而避免产生热岛效 应， 从而提升散热效果的散热器及筒灯， 即在本发明的保护范围之内。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的 普通技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干简单推 演或替换， 都应当视为属于本发明的保护范围。

Claims

权 利 要 求 书
1、 一种垂直对流散热器， 包括基板， 和下端与所述基板导热连接的若干 散热鳍片， 其特征在于， 所述垂直对流散热器具有若干对流通道， 所述对流 通道贯穿垂直对流散热器的上下表面。
2、 如权利要求 1所述的一种垂直对流散热器， 其特征在于， 所述基板与 散热鳍片一体成型而导热连接。
3、 如权利要求 1所述的一种垂直对流散热器， 其特征在于， 所述若干对 流通道位于散热鳍片之间， 由若干散热鳍片形成。
4、 如权利要求 1所述的一种垂直对流散热器， 其特征在于， 所述垂直对 流散热器还包括边框， 所述若干对流通道位于散热鳍片与边框之间， 由若干 散热鳍片与边框共同形成。
5、 如权利要求 4所述的一种垂直对流散热器， 其特征在于， 所述边框的 截面为圆形、 方形、 正六边形、 正八边形、 椭圆形、 菱形、 梯形、 三角形中 的任意一种或者多种的组合。
6、 如权利要求 1所述的一种垂直对流散热器， 其特征在于， 所述垂直对 流散热器还包括边框和连接筋板， 所述若干对流通道位于散热鳍片、 边框与 连接筋板之间， 由若干散热鳍片与边框及筋板共同形成。
7、 如权利要求 6所述的一种垂直对流散热器， 其特征在于， 所述边框或 者连接筋板的截面为圆形、 方形、 正六边形、 正八边形、 椭圆形、 菱形、 梯 形、 三角形中的任意一种或者多种的组合。
8、 如权利要求 4至 7中任意一项所述的一种垂直对流散热器， 其特征在 于， 所述基板采用过盈配合的方式套设在所述边框的底部外围而导热连接。
9、 如权利要求 1所述的一种垂直对流散热器， 其特征在于， 所述垂直对 流散热器的表面喷涂有黑色纳米漆。
10、 一种垂直对流散热筒灯， 包括散热器， 其特征在于， 所述散热器为 权利要求 1至 9中任意一项所述的一种垂直对流散热器。
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