WO2014134751A1 - 具有散热功能的led灯具 - Google Patents

具有散热功能的led灯具 Download PDF

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Publication number
WO2014134751A1
WO2014134751A1 PCT/CN2013/000243 CN2013000243W WO2014134751A1 WO 2014134751 A1 WO2014134751 A1 WO 2014134751A1 CN 2013000243 W CN2013000243 W CN 2013000243W WO 2014134751 A1 WO2014134751 A1 WO 2014134751A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
led lamp
dissipation function
steam chamber
circuit module
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/CN2013/000243
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English (en)
French (fr)
Inventor
金积德
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.)
Acmecools Technology Ltd
Original Assignee
Acmecools Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Acmecools Technology Ltd filed Critical Acmecools Technology Ltd
Priority to PCT/CN2013/000243 priority Critical patent/WO2014134751A1/zh
Priority to US14/773,214 priority patent/US9541276B2/en
Priority to EP13877354.4A priority patent/EP2977676B1/en
Publication of WO2014134751A1 publication Critical patent/WO2014134751A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • 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
    • F21V29/80—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with pins or wires
    • F21V29/81—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with pins or wires with pins or wires having different shapes, lengths or spacing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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 invention relates to an LED lamp, in particular to an LED lamp having a heat dissipation function with good heat dissipation effect. current technology
  • LED (light-emitting diode) lamps such as LED street lamps
  • LED street lamps Because of the outdoor environment and must take into account the environmental factors such as wind, rain, sun, etc., often use a shell to LED LEDs used to illuminate and related The board is covered so that rain does not enter the short circuit that causes the circuit.
  • a heat sink is usually added to provide heat dissipation.
  • the heat sink and the LED chip are both enclosed in the outer casing, the air in the outer casing cannot be effectively radiated outward, so that the heat dissipation effect is limited, and such LED lamps often shorten the use of the LED chip due to overheating. life.
  • Some manufacturers have also made a number of heat sinks on the outer casing, which are formed by paralleling a plurality of fins (this is a conventional structure, which is not shown in the drawings), so that the heat dissipation area of the outer casing is increased. In order to effectively release the internal high temperature, the temperature of each component in the outer casing is also reduced. However, such heat dissipation is extremely limited.
  • the arrangement of a plurality of fins on the surface of the casing also has the problem of easily retaining dirt.
  • the traditional multi-parallel fins are densely spaced. When used outdoors, rainwater will fall into the gap between the fins, and the fallen leaves may get stuck in the gaps, or bird excrement and Dust, etc., are all likely to get stuck in the gap. Over time, the dirt will solidify, and even if it rains, it will not be able to clean up the dirt. The dirt will shield the surface of the heat sink fin from the air, so that the heat dissipation efficiency of the heat sink fin is deteriorated. Summary of the invention
  • a primary object of the present invention is to provide an LED lamp having a heat dissipation function which can have a better heat dissipation effect than existing LED lamps.
  • An LED lamp having a heat dissipating function comprising: a heat dissipating body, which is a solid metal, and an upper surface is respectively formed on a top and a bottom of the heat dissipating body; a lower surface; the upper surface has a highest point, the upper surface extends obliquely downward from the highest point to the periphery, and the upper surface forms a plurality of bumps, each of the bumps being arranged in a granular shape a surface, and a plurality of flow channels are formed between each of the bumps, each of the flow channels exhibiting a high-low direction and extending toward an edge of the heat sink; the lower surface is recessed from bottom to
  • the highest point is at the center of the upper surface.
  • the utility model further comprises a lamp cover disposed on the lower surface of the heat dissipating body from below and covering the LED unit, the circuit module and the temperature equalizing steam chamber; the lamp cover is provided with a plurality of air holes.
  • the inner wall of the lampshade is coated with a heat dissipating paint.
  • the method further includes at least one set of external terminals electrically connected to the circuit module for external connection to a power source.
  • Each of the flow channels is radially arranged or randomly staggered on the upper surface.
  • a heat dissipation medium is disposed between the temperature equalizing steam chamber and the heat sink.
  • the temperature equalizing steam chamber is detachably fixed to the heat sink by a plurality of fasteners.
  • the circuit module is a circuit board or a printed circuit directly printed on the bottom surface of the temperature equalizing vapor chamber, or a circuit patch containing the at least one LED unit.
  • the height of each of the bumps is smaller than the width of each of the flow channels.
  • the invention has the following advantages: 1. It has better heat dissipation effect than the conventional LED lamp; 2. It can be used outdoors without the outer casing; 3. The bump design on the upper surface of the heat sink of the invention It does not catch leaves or bird excrement, which can effectively let the rain flow down to maintain good heat dissipation.
  • the invention is applicable to various LED (light-emitting diode) lamps, and can provide good heat dissipation effect for LED lamps whether used outdoors or indoors, and can overcome the existing heat dissipation device of the heat-dissipating LED lamps to easily retain dirt and heat dissipation efficiency. The problem of deterioration.
  • Figure 1 is a plan view of a first preferred embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1;
  • FIG. 3 is a cross-sectional view showing a first embodiment of the present invention, showing a cross section of a bump of a different shape
  • FIG. 4 is a partial component combination diagram of the first preferred embodiment of the present invention, showing a uniform temperature steam chamber, a circuit module, and The combined state of the LED unit;
  • Figure 5 is a perspective view showing an inverted combination of the first preferred embodiment of the present invention, and showing a state in which the heat sink is partially cut;
  • Figure 6 is a view showing the state of use of the first preferred embodiment of the present invention.
  • Figure 7 is a plan view of a second preferred embodiment of the present invention.
  • Figure 8 is a cross-sectional view taken along line 8-8 of Figure 7.
  • an LED lamp 10 having a heat dissipation function is mainly composed of a heat sink 11, a uniform temperature steam chamber 21, a circuit module 31, and at least An LED unit 41 is composed of:
  • the heat dissipating body 11, which is a solid metal, can be formed by casting in the implementation, and an upper surface 12 and a lower surface 16 are formed on the top and bottom of the heat dissipating body 11, respectively.
  • the upper surface 12 has a highest point 121.
  • the upper surface 12 extends obliquely downward from the highest point 121, and the upper surface 12 forms a plurality of bumps 13.
  • Each of the bumps 13 is arranged in a granular shape on the upper surface 12, and each convex portion
  • a plurality of flow passages 14 are formed between the blocks 13, and each of the flow passages 14 has a medium-high downward direction and extends toward the edge of the heat radiator 11.
  • the lower surface 16 has a recessed portion 161 with the opening facing downward from the bottom, and the bottom surface of the recessed portion 161 is flat, and the heat radiating body 11 extends downwardly and outwardly along the bottom surface of the recessed portion 161 to form a weir portion 17, and in the recess portion 161 and An inner bevel 171 is formed between the crotch portions 17 extending upwardly and inwardly from the bottom edge of the crotch portion 17.
  • the heat radiating body 11 is exemplified by a spherical shape in the drawing, but may be in the form of a tapered shape or other intermediate high and low surrounding.
  • the highest point 121 of the heat sink 11 can be designed anywhere on the upper surface 12 in accordance with design requirements, and is exemplified in the center of the upper surface 12 in this embodiment.
  • each of the bumps 13 may have various forms, such as a dot shape, a roof tile shape, a hill shape or the like. In FIG. 2, a dot shape is taken as an example, and FIG. 3 shows that the bump 13 is a hill. State of appearance.
  • each of the flow paths 14 is exemplified by a radial arrangement on the upper surface 12, and a plurality of flow paths are indicated by broken lines in Fig. 1.
  • the uniform temperature steam chamber 21 is attached to the bottom surface of the recess 161 with its top surface.
  • the structure inside the uniform temperature steam chamber 21 is similar to the conventional heat pipe, and has the effect of rapid average temperature, so the detailed structure thereof will not be described.
  • the circuit module 31 is attached to the bottom surface of the temperature equalizing steam chamber 21 with its top surface.
  • the circuit module 31 can be a circuit board or a printed circuit directly printed on the bottom surface of the uniform temperature steam chamber 21, or can be a circuit patch including at least one LED unit 41. In this embodiment, the circuit board is example.
  • At least one LED unit 41 is disposed on the bottom surface of the circuit module 31 in the embodiment as an example.
  • the structure of the LED chip, the encapsulant, and the like of the LED unit 41 are conventional and will not be described.
  • the LED lamp 10 with heat dissipation function provided by the present invention is disposed on a support 91 , such as a pole, and the LED unit is disposed before the use. 41 way down.
  • the LED unit 41 emits light downward, and the thermal energy generated when the LED unit 41 emits light is conducted to the uniform temperature steam chamber 21 through the circuit module 31, and the rapid uniform temperature effect of the uniform temperature steam chamber 21 can be used.
  • the heat is quickly guided to the heat sink 11 and dissipated by the large surface area of the heat sink 11.
  • the rainwater flows down the upper flow surface 12 of the heat radiating body 11 along the respective flow paths 14, and is dropped by the crotch portion 17.
  • the rainwater in the weir portion 17 does not flow to the temperature equalizing steam chamber 21 and the circuit module 31, so that the short circuit problem is not caused.
  • the leaves or bird excrement can not be caught on the upper surface 12 of the radiator 11, and the rainwater can be effectively drained, thereby maintaining good performance. Cooling function. Even if it is used indoors, since the surface is only designed with a granular protrusion and a flow path, dust can be prevented from getting stuck on the surface, and a good heat dissipation function can be maintained.
  • the functions that can be achieved by the first embodiment are as follows: 1. It has better heat dissipation effect than the conventional LED lamp; 2. It can be used outdoors without the outer casing; 3. The heat dissipation of the invention
  • the bump 13 of the upper surface 12 of the body 11 is designed to not catch the leaves or bird excrement, which can effectively allow the rainwater to flow down and maintain good heat dissipation performance.
  • an LED lamp 50 having a heat dissipation function has the main structure similar to that of the first embodiment described above, except that:
  • each of the bumps 53 is slightly water-like, which is different from the bumps 13 of the first embodiment.
  • Each of the flow passages 54 is randomly staggered on the upper surface. This arrangement differs from the first embodiment described above in that a more varied flow path can be provided.
  • a heat dissipating medium 62 such as a heat dissipating paste, a solder (material) or a heat dissipating patch, is disposed between the heat dissipating body 51 and the uniform temperature steam chamber 61, and is attached to a partial bottom surface of the concave portion 561 of the heat radiating body 51 and a portion of the uniform temperature steam chamber 61. Top surface.
  • the temperature equalizing steam chamber 61 is detachably fixed to the heat radiating body 51 by a plurality of fasteners 64.
  • the buckle 64 is a conventional component, and its detailed structure is not described. The convenience of assembling the uniform temperature steam chamber 61 can be improved by the respective fasteners 64.
  • the height of each of the bumps 53 on the upper surface of the heat radiating body 51 is smaller than the width of each of the flow passages 54. Therefore, it is possible that the bumps 53 are not too high, and it is more difficult to catch foreign matter such as leaves.
  • At least one LED unit 81 is exemplified by a plurality of LED units in the second embodiment.
  • the second embodiment further includes a lamp cover 85 and a set of external terminals 87.
  • the lamp cover 85 is disposed on the lower surface of the heat sink 51 from below and covers each of the LED unit 81, the circuit module 71, and the temperature equalizing steam chamber 61.
  • the lamp cover 85 may be a transparent light transmissive plate or may be a translucent diffuser plate. Additional protection can be provided for each LED unit 81, circuit module 71, and uniform temperature steam chamber 61.
  • the lamp cover 85 is further provided with a plurality of air holes 851, so that the air in the lamp cover 85 can communicate with the outside air, or can form a convection phenomenon with the outside air.
  • the external terminal 87 is electrically connected to the circuit module 71 for external connection to the power source. This improves the convenience of connecting the power supply during installation.
  • the heat shield (not shown) can be applied to the lamp cover 85, thereby transferring heat energy to the heat sink 51, thereby improving heat dissipation efficiency.
  • the lampshade may be coated with a astigmatism lacquer (not shown), or the lampshade itself may form a scattering surface (e.g., the lampshade surface of the lamp) to scatter the light emitted by the LED unit 81 in accordance with the desired optical characteristics.
  • a layer of waterproof glue may be further coated to improve the waterproof effect. Since the technique of applying the waterproof glue itself is a conventional technique, it is no longer represented by a drawing. Industrial applicability
  • the LED (light-emitting diode) lamp with heat dissipation function provided by the invention can provide good heat dissipation effect for the LED lamp whether it is used outdoors or indoors, and can overcome the existing heat dissipation device of the heat-dissipating LED lamp to easily retain the dirt, so that The problem of poor heat dissipation efficiency can improve the service life of LED lamps and has good industrial applicability.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种具有散热功能的LED灯具，包含有：一散热体（11），一均温蒸汽腔（21），一电路模块（31）以及至少一LED单元（41）。散热体（11）为实心金属，在散热体（11）的顶、底部分别形成一上表面（12）以及一下表面（16）。上表面（12）具有一最高点（121），上表面（12）由最高点（121）向四周倾斜向下延伸。上表面（121）形成多个凸块（13），各凸块（13）以颗粒状布设于上表面（12），且各凸块（13）之间形成多个流道（14），各流道（14）呈现由高向低状且向散热体（11）的边缘延伸。下表面（16）由下往上凹设一凹部（161），凹部（161）的底面呈平坦状。散热体（11）沿凹部（161）的底面向下向外延伸形成一檐部（17），并且在凹部（161）与檐部（17）之间形成一个由檐部（17）底缘向上向内延伸的一内斜面（171）。均温蒸汽腔（21）以其顶面贴设于凹部（161）的底面。电路模块（31）以其顶面贴设于均温蒸汽腔（21）的底面。至少一LED单元（41）设于电路模块（31）的底面。

Description

具有散热功能的 LED灯具 技术领域
本发明与 LED灯具有关，特别是指具有良好散热效果的一种具有散热功能 的 LED灯具。 现有技术
传统的户外 LED (发光二极管)灯具 (例如 LED路灯)， 由于处于户外而必须 考虑到风吹雨打太阳晒等环境因素， 往往会使用一个外壳将 LED灯具中用来发 光的 LED芯片及其相关电路板加以包覆， 使雨水不会进入造成电路上的短路。 又由于 LED灯具在工作时会伴随产生高热， 因此通常会再附加一个散热器来提 供散热效果。 然而， 由于散热器及 LED芯片都会被包覆在外壳内， 导致该外壳 内的空气无法有效的向外散出， 使得散热效果有限， 这样的 LED灯具常常会因 过热而缩短了 LED芯片的使用寿命。
有些业者在外壳上也制作了若干数量的散热片， 其为多个鳍片相平行设置 而成 (此为习知构造， 容不以图式表示)， 以此让外壳的散热面积加大， 以使得内 部的高温能有效释放出来， 以图达到外壳内的各个组件温度也随之降低的效果。 然而， 这样的散热效果极为有限。
此外，在外壳表面设置多个散热片的设置方式还会有容易滞留脏污的问题。 传统的多片平行式散热鳍片， 其间距较密， 在户外使用时， 下雨时的雨水会落 入鳍片间的缝隙， 落叶也可能会卡在缝隙间， 或是鸟类排泄物及尘土等， 都很 有可能卡在缝隙中， 久而久之， 脏污会固化， 此时即使下雨也不见得可以将脏 污冲刷干净。 而脏污会遮蔽散热鳍片与空气接触的表面， 使得散热鳍片的散热 效率变差。 发明内容
本发明的主要目的是提供一种具有散热功能的 LED灯具， 其可具有比现有 LED灯具更佳的散热效果。
本发明的再一目的在于提供一种具有散热功能的 LED灯具， 其可在不设置 习知的外壳的情况下， 使用于户外。
本发明的又一目的在于提供一种具有散热功能的 LED灯具，其表面的散热 设计不会卡住树叶或鸟类排泄物， 可有效让雨水流下， 可维持良好的散热效能。 为达到上述目的， 本发明采用以下技术方案： 一种具有散热功能的 LED灯 具， 其特征在于包含有： 一散热体， 为实心金属， 在所述散热体的顶、 底部分 别形成一上表面以及一下表面； 所述上表面具有一最高点， 所述上表面由所述 最高点向四周倾斜向下延伸， 且所述上表面形成多个凸块， 各所述凸块以颗粒 状布设于所述上表面， 且各所述凸块之间形成多个流道， 各所述流道呈现由高 向低状且向所述散热体的边缘延伸； 所述下表面由下往上凹设一凹部， 所述凹 部的底面呈平坦状， 且所述散热体沿所述凹部的底面向下向外延伸形成一檐部， 并且在所述凹部与所述檐部之间形成一个由所述檐部底缘向上向内延伸的一内 斜面； 一均温蒸汽腔， 以其顶面贴设于所述凹部的底面； 一电路模块， 以其顶 面贴设于所述均温蒸汽腔的底面；至少一 LED单元，设于所述电路模块的底面。
上述本发明的技术方案中， 所述最高点在所述上表面的中央。
还包含有一灯罩， 由下方设于所述散热体的下表面， 并且涵盖所述 LED单 元、 所述电路模块以及所述均温蒸汽腔； 所述灯罩上设有多个气孔。
所述灯罩内壁涂覆一层散热漆。
还包含有至少一组外接端子， 电连接于所述电路模块， 用于外接于电源。 各所述流道在所述上表面呈辐射状排列或随机交错排列。
所述均温蒸汽腔与所述散热体之间设有一散热介质。
所述均温蒸汽腔通过多个扣具以能拆卸的方式固定于所述散热体。
所述电路模块为一电路板或一直接印制于所述均温蒸汽腔底面的印刷电 路， 或为一含有所述至少一 LED单元的电路贴片。
各所述凸块的高度小于各所述流道的宽度。
本发明的优点在于： 一、 具有比习知 LED灯具更好的散热效果； 二、 可在 不设置外壳的情况下使用于户外； 三、 本发明的散热体的上表面上的凸块设计 并不会卡住树叶或鸟类排泄物， 可有效让雨水流下， 以维持良好的散热效能。
本发明适用于各种 LED (发光二极管)灯具， 无论是用于户外还是室内， 均 可为 LED灯具提供良好的散热效果， 并能克服现有散热 LED灯具散热装置容 易滞留脏污， 使散热效率变差的问题。 附图说明
图 1 是本发明第一较佳实施例的俯视图； 图 2 是沿图 1中 2-2剖线的剖视图；
图 3 是本发明第一较佳实施例的剖视示意图， 显示不同形状的凸块断面; 图 4 是本发明第一较佳实施例的局部构件组合图， 显示均温蒸汽腔、 电 路模块及 LED单元的组合状态；
图 5 是本发明第一较佳实施例的倒置组合立体图， 并显示散热体局部剖 开的状态；
图 6 是本发明第一较佳实施例的使用状态图；
图 7 是本发明第二较佳实施例的俯视图；
图 8 是沿图 7中 8-8剖线的剖视图。
本发明最佳实施方式
为了详细说明本发明的构造及特点所在， 现举以下较佳实施例并配合附图 说明如后， 其中：
如图 1至图 5所示， 本发明第一较佳实施例所提供的一种具有散热功能的 LED灯具 10， 主要由一散热体 11、 一均温蒸汽腔 21、 一电路模块 31以及至少 一 LED单元 41所组成， 其中：
散热体 11， 为实心金属， 实施时可以铸造方式来制作， 在散热体 11的顶、 底部分别形成一上表面 12以及一下表面 16。 上表面 12具有一最高点 121， 上 表面 12由最高点 121向四周倾斜向下延伸， 且上表面 12形成多个凸块 13， 各 凸块 13以颗粒状布设于上表面 12， 且各凸块 13之间形成多个流道 14， 各流道 14呈现中高向低状且向散热体 11的边缘延伸。 下表面 16由下往上凹设开口朝 下的一凹部 161， 凹部 161的底面呈平坦状， 且散热体 11沿凹部 161的底面向 下向外延伸形成一檐部 17， 并且在凹部 161与檐部 17之间形成一个由檐部 17 底缘向上向内延伸的一内斜面 171。 散热体 11在图中以圆球状为例， 但也可以 是锥形状或其他中间高而周围低的形态。
散热体 11的最高点 121可依设计上的需求而设计在位于上表面 12的任意 地方， 而在本实施例中以位于上表面 12的中央为例。 此外， 各凸块 13也可以 是多种形态， 例如圆点状、 屋瓦状、 山丘状或其他形状， 在图 2 中以圆点状为 例， 图 3则显示凸块 13为山丘状的状态。 又， 在本实施例中， 各流道 14是以 在上表面 12呈辐射状排列为例， 并且， 在图 1中是以虚线表示数个流道。
均温蒸汽腔 21， 以其顶面贴设于凹部 161的底面。均温蒸汽腔 21内部的结 构与习知热管类似， 具有快速均温的效果， 因此其详细结构容不赘述。 电路模块 31， 以其顶面贴设于均温蒸汽腔 21的底面。 电路模块 31可为一 电路板或一直接印制于均温蒸汽腔 21底面的印刷电路， 或也可以是一含有至少 一 LED单元 41的电路贴片， 在本实施例中是以电路板为例。
至少一 LED单元 41， 在本实施例中在数量上以一为例， 设于电路模块 31 的底面。 LED单元 41的 LED芯片、 封胶等结构属于习知， 容不赘述。
以上说明了本发明第一实施例的架构， 接下来说明该第一实施例的使用状 态。
如图 1至图 6所示， 本发明所提供的具有散热功能的 LED灯具 10在使用 前， 是以散热体 11设置于一支撑物 91上， 例如设置于一立杆上， 并且使 LED 单元 41朝下的方式设置。
在使用时， LED单元 41是发光朝下照射， 而 LED单元 41发光时所产生的 热能便通过电路模块 31传导至均温蒸汽腔 21， 通过均温蒸汽腔 21的快速均温 效果， 可将热能很快的导引至散热体 11， 并通过散热体 11的庞大表面积来进行 散热。在下雨时， 雨水会由散热体 11的上表面 12沿各流道 14流下， 由檐部 17 滴落。 通过檐部 17的内斜面 171的设置， 在檐部 17的雨水便不会流至均温蒸 汽腔 21 以及电路模块 31， 因此便不会造成短路的问题。 另外， 通过各凸块 13 的颗粒状配合流道 14的设计， 可使得树叶或鸟类排泄物不会卡在散热体 11 的 上表面 12， 并可有效的让雨水流下， 进而得以维持良好的散热功能。 而即使使 用在室内， 也由于其表面仅为颗粒状凸起配合流道的设计， 而可使得灰尘较不 易卡在表面， 仍能维持良好的散热功能。
由此可见， 本第一实施例所能达到的功效为： 一、 具有比习知 LED灯具更 好的散热效果； 二、 可在不设置外壳的情况下使用于户外； 三、 本发明的散热 体 11上表面 12的凸块 13设计并不会卡住树叶或鸟类排泄物， 可有效让雨水流 下， 可维持良好的散热效能。
再如图 7至图 8所示， 为本发明第二较佳实施例所提供的一种具有散热功 能的 LED灯具 50， 其主要结构概同于前述第一实施例， 不同之处在于：
各凸块 53的形状略呈水滴状， 而不同于第一实施例的凸块 13。
各流道 54在上表面上随机交错排列。 此排列方式不同于前述第一实施例， 可提供更多样的水流路径。
散热体 51与均温蒸汽腔 61之间设有一散热介质 62，例如散热膏、焊锡 (料) 或散热贴片， 贴在散热体 51的凹部 561的局部底面以及均温蒸汽腔 61的局部 顶面。 通过散热介质 62的设置， 可使得散热体 51与均温蒸汽腔 61的接触面接 更大， 进而使散热的效果更好。
均温蒸汽腔 61是通过多个扣具 64以可拆卸的方式固定于散热体 51。 扣具 64为习知构件， 其详细结构容不赘述。 通过各扣具 64， 可提高组装均温蒸汽腔 61的方便性。
散热体 51的上表面的各凸块 53的高度小于各流道 54的宽度。 由此， 可使 得各凸块 53不会太高， 进而更不易卡住树叶等杂物。
至少一 LED单元 81， 在本第二实施例中是以多个为例。
本第二实施例还包含有一灯罩 85以及一组外接端子 87。
灯罩 85， 由下方设于散热体 51的下表面， 并且涵盖各 LED单元 81、 电路 模块 71以及均温蒸汽腔 61。 灯罩 85可以是透明的透光板， 或也可以是半透明 的扩散板。可为各 LED单元 81、 电路模块 71以及均温蒸汽腔 61提供额外的保 护效果。此外， 灯罩 85上还设置有多个气孔 851， 可使灯罩 85内的空气与外部 空气相通而流通， 或可与外界空气形成对流现象。
外接端子 87， 电连接于电路模块 71， 用来外接于电源。 由此， 可提高安装 时连接电源的方便性。
须补充说明的是， 灯罩 85上可涂布散热漆 (图中未示)， 可由此将热能传导 至散热体 51， 进而提升散热效率。 或者， 灯罩上可涂布散光漆 (图中未示)， 或 灯罩本身形成散射表面 (例如车灯的灯罩表面)，可使 LED单元 81所发出的光依 所需的光学特性来散射。
本第二实施例的其余结构及所能达到的功效均概同于前述第一实施例， 容 不再予赘述。
在前述二实施例中的电路模块、 LED单元或散热体表面， 均可再涂覆一层 防水胶， 以提高防水的效果。 由于涂覆防水胶的技术本身乃是习知技术， 因此 容不再以图式表示。 工业应用性
本发明提供的具有散热功能的 LED (发光二极管)灯具， 无论是用于户外还 是室内， 均可为 LED灯具提供良好的散热效果， 并能克服现有散热 LED灯具 散热装置容易滞留脏污，使散热效率变差的问题，可提高 LED灯具的使用寿命， 具有良好的工业应用性。

Claims

权利要求
1、 一种具有散热功能的 LED灯具， 其特征在于包含有：
一散热体， 为实心金属， 在所述散热体的顶、 底部分别形成一上表面以及 一下表面； 所述上表面具有一最高点， 所述上表面由所述最高点向四周倾斜向 下延伸， 且所述上表面形成多个凸块， 各所述凸块以颗粒状布设于所述上表面， 且各所述凸块之间形成多个流道， 各所述流道呈现由高向低状且向所述散热体 的边缘延伸； 所述下表面由下往上凹设一凹部， 所述凹部的底面呈平坦状， 且 所述散热体沿所述凹部的底面向下向外延伸形成一檐部， 并且在所述凹部与所 述檐部之间形成一个由所述檐部底缘向上向内延伸的一内斜面；
一均温蒸汽腔， 以其顶面贴设于所述凹部的底面；
一电路模块， 以其顶面贴设于所述均温蒸汽腔的底面；
至少一 LED单元， 设于所述电路模块的底面。
2、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 所述最 高点在所述上表面的中央。
3、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 还包含 有一灯罩， 由下方设于所述散热体的下表面， 并且涵盖所述 LED单元、 所述电 路模块以及所述均温蒸汽腔； 所述灯罩上设有多个气孔。
4、 如权利要求 3所述的具有散热功能的 LED灯具， 其特征在于： 所述灯 罩内壁涂覆一层散热漆。
5、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 还包含 有至少一组外接端子， 电连接于所述电路模块， 用于外接于电源。
6、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 各所述 流道在所述上表面呈辐射状排列或随机交错排列。
7、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 所述均 温蒸汽腔与所述散热体之间设有一散热介质。
8、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 所述均 温蒸汽腔通过多个扣具以能拆卸的方式固定于所述散热体。
9、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 所述电 路模块为一电路板或一直接印制于所述均温蒸汽腔底面的印刷电路， 或为一含 有所述至少一 LED单元的电路贴片。
10、 如权利要求 1所述的具有散热功能的 LED灯具， 其特征在于： 各所述 凸块的高度小于各所述流道的宽度。
PCT/CN2013/000243 2013-03-08 2013-03-08 具有散热功能的led灯具 Ceased WO2014134751A1 (zh)

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US14/773,214 US9541276B2 (en) 2013-03-08 2013-03-08 LED lamp having a good heat-dissipating function
EP13877354.4A EP2977676B1 (en) 2013-03-08 2013-03-08 Led lamp having heat dissipation function

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201057450Y (zh) * 2007-04-03 2008-05-07 宁翔科技股份有限公司 Led灯结构
CN201081205Y (zh) * 2007-08-17 2008-07-02 广东昭信光电科技有限公司 大功率发光二极管路灯的蒸汽腔散热结构
CN201666560U (zh) * 2009-11-25 2010-12-08 刘建军 Led路灯散热器
CN201748300U (zh) * 2010-08-26 2011-02-16 福建省朗星光电科技有限公司 一种带高散热率结构的led路灯
CN201836689U (zh) * 2010-09-19 2011-05-18 浙江金中机电科技有限公司 有双层散热板的led灯
CN202216078U (zh) * 2011-07-26 2012-05-09 苏州晶雷光电照明科技有限公司 一种led庭院灯

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6905226B2 (en) * 2003-08-05 2005-06-14 Jerold A. Tickner Compact fluorescent light fixture
TWI303302B (en) * 2005-10-18 2008-11-21 Nat Univ Tsing Hua Heat dissipation devices for led lamps
TW201107655A (en) * 2009-08-21 2011-03-01 Nat Univ Tsing Hua LED lamp
US20130271998A1 (en) * 2010-10-21 2013-10-17 Adi Merschon Led light bulb and universal platform
CN102022657A (zh) * 2010-12-28 2011-04-20 鸿富锦精密工业（深圳）有限公司 Led照明灯具
KR20120090690A (ko) * 2011-02-08 2012-08-17 아이스파이프 주식회사 엘이디 조명장치 및 이를 구비한 가로등 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201057450Y (zh) * 2007-04-03 2008-05-07 宁翔科技股份有限公司 Led灯结构
CN201081205Y (zh) * 2007-08-17 2008-07-02 广东昭信光电科技有限公司 大功率发光二极管路灯的蒸汽腔散热结构
CN201666560U (zh) * 2009-11-25 2010-12-08 刘建军 Led路灯散热器
CN201748300U (zh) * 2010-08-26 2011-02-16 福建省朗星光电科技有限公司 一种带高散热率结构的led路灯
CN201836689U (zh) * 2010-09-19 2011-05-18 浙江金中机电科技有限公司 有双层散热板的led灯
CN202216078U (zh) * 2011-07-26 2012-05-09 苏州晶雷光电照明科技有限公司 一种led庭院灯

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2977676A4 *

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US9541276B2 (en) 2017-01-10
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EP2977676A4 (en) 2016-08-24
EP2977676B1 (en) 2018-05-09

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