WO2010045841A1 - 灯具的散热装置 - Google Patents

灯具的散热装置 Download PDF

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Publication number
WO2010045841A1
WO2010045841A1 PCT/CN2009/074359 CN2009074359W WO2010045841A1 WO 2010045841 A1 WO2010045841 A1 WO 2010045841A1 CN 2009074359 W CN2009074359 W CN 2009074359W WO 2010045841 A1 WO2010045841 A1 WO 2010045841A1
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WO
WIPO (PCT)
Prior art keywords
heat sink
heat
luminaire according
wall
degrees
Prior art date
Application number
PCT/CN2009/074359
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English (en)
French (fr)
Inventor
余幼华
劳兆麟
Original Assignee
上海宝康电子控制工程有限公司
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Filing date
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Application filed by 上海宝康电子控制工程有限公司 filed Critical 上海宝康电子控制工程有限公司
Publication of WO2010045841A1 publication Critical patent/WO2010045841A1/zh

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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
    • 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
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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 a luminaire, in particular to a heat dissipating device of a luminaire. Background technique
  • LED Light Emitting Diode
  • OLED Organic Light Emitting Diode
  • OLED Organic Light Emitting Diode
  • the amount of luminescence of a single illuminant is limited, and it cannot meet the daily lighting needs. It is necessary to arrange a plurality of illuminants intensively and integrate them together. This causes a large amount of heat to accumulate in a small space and cannot be quickly dissipated.
  • the above-mentioned illuminator operates in a high temperature environment, it rapidly ages, so that its life is greatly shortened.
  • LED lamps are generally divided into upper and lower halves.
  • the upper half is a heat sink or a heat sink.
  • the lower half is equipped with LEDs as light exits.
  • Some manufacturers use heat pipe systems.
  • the heat sinks or heat sinks and light exits of the lamps are in the lower half of the lamps. unit.
  • the disadvantages of such a luminaire are very obvious. It is not only bad for air convection, but also the heat sink or heat sink is installed in the upper part. After a long time of use, dust and debris will accumulate at the root of the heat sink or heat sink. The effect of heat dissipation.
  • a heat dissipating device for a luminaire includes a wall, and one side of the wall is provided with a plurality of ribs, and the adjacent fins have a space between the upper and lower hollow spaces.
  • the walls are disposed on both sides of the heat sink and are connected to each other by the ribs, and all the ribs form a heat dissipation space that penetrates up and down.
  • a cover plate with a vent hole is provided above or below the heat sink or on the upper and lower sides.
  • the heat dissipation space is disposed at an upper portion, a middle portion or a lower portion of a space formed by the two side walls, and the remaining portion is a cavity.
  • the heat dissipating device is bilaterally symmetrical, and the left and right parts are separately manufactured, and the left and right parts are connected by an intermediate connecting member.
  • the angle between the two side walls is 0-180 degrees.
  • the angle between the two side walls is 0 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees or 150 degrees.
  • the heat dissipation space has a height of 1 mm to 300 mm; a width of 10 mm to 800 mm, and a length of 10 mm to 10000 mm.
  • the other side of the wall is provided with a lighting unit that receives heat from the lighting unit by conduction, convection, and radiation.
  • the walls are disposed on both sides of the heat sink, and the light-emitting unit is provided only on one side of the wall.
  • At least one side of the light unit is provided with an optical device fixedly coupled to the wall, and the optical device forms an exit angle with the wall for reflecting or refracting light.
  • the optical device is a reflective bowl or reflector or lens.
  • Each of the ribs has a thickness of 0.1 to 20 mm, and adjacent ribs have a separation distance of 1 to 100 mm.
  • Each of the ribs has a thickness of 2 mm, and adjacent ribs have a separation distance of 8 mm.
  • the upper and lower surfaces of the fin are straight or oblique or curved.
  • Each of the side walls is composed of 1 to 15 sets of heat conducting plates, and each of the heat conducting groups is provided with 1 to 100 rows of light emitting units, and the angle between adjacent heat conducting plates is 0-180 degrees.
  • the lighting unit is a solid state lighting unit.
  • the light emitting unit is an LED or an OLED.
  • the wall is provided with 1-10 rows of light emitting units.
  • a support strip for supporting the entire heat sink is disposed in the middle of the heat sink.
  • the heat sink is provided with a heat pipe or a heat conductive rod connected to the wall.
  • the heat sink is a metal or non-metal material that conducts heat well.
  • the metal is copper or aluminum or an alloy thereof, and the non-metal material is graphite.
  • the structure of the invention has a single tube, beautiful appearance and is suitable for mass production.
  • the present invention has a space of upper and lower hollow spaces between the adjacent fins, so that it is more in line with the flow characteristics of the air, which is beneficial to the transfer of heat. Therefore, heat can be dissipated by heat radiation, and heat can be dissipated by accelerating air convection from bottom to top. Therefore, compared with the traditional heat dissipation method with low heat convection outside the high heat conduction lamp in the lamp, the heat dissipation efficiency has been greatly improved, the lower temperature rise can be obtained, and the lamp body is greatly reduced.
  • each fin in this embodiment is longer than the heat sink of the conventional luminaire, that is, the height direction. It is longer, so it has a larger heat dissipation area, which further improves the heat dissipation effect.
  • the hot air can obtain a certain ascending acceleration due to the chimney effect, so that an air pressure difference is formed between the lower surface of the lamp, and the pressure difference drives the cold air under the lamp to continuously fill the heat dissipation space, so , to achieve accelerated convection, complete heat exchange, achieve better heat dissipation, and further improve heat dissipation efficiency.
  • the heat dissipating space is disposed inside the heat dissipating device, that is, in the space formed by the two side walls or the two are overlapped. Therefore, the outer casing of the present invention has no sharp portion, and is more safe than the conventional lamp.
  • FIG. 1 is a cross-sectional view showing the structure of a heat sink of a lamp of the present invention
  • FIG. 2 is a top plan view of a heat sink of the lamp of the present invention (straight plate type);
  • FIG. 3 is a top plan view of the heat sink of the lamp of the present invention (sloping plate type);
  • Figure 4 is a top plan view (curved plate type) of the heat sink of the lamp of the present invention.
  • FIG. 5 is a top plan view of a heat sink of the lamp of the present invention (symmetric swash plate type);
  • Figure 6 is a top plan view of a heat sink of the lamp of the present invention (symmetric curved plate type);
  • Figure ⁇ is a schematic cross-sectional view showing the structure of a heat sink of a luminaire provided with a support strip;
  • Figure 8 is a top plan view showing the heat sink of the lamp with the support bar
  • Figure 9 is a cross-sectional view showing the structure of a heat dissipating device of the lamp of the present invention.
  • Figure 10 is a cross-sectional view showing the structure of another heat sink of the lamp of the present invention.
  • Figure 11 is a cross-sectional view showing the structure of another heat sink of the lamp of the present invention.
  • Figure 12 is a cross-sectional view showing the structure of another heat sink of the lamp of the present invention.
  • Figure 13 is a cross-sectional view showing the structure of another heat sink of the lamp of the present invention.
  • 1-wall also known as heat-conducting plate
  • 2-heat sink 3-lighting unit
  • 4-optical device 5-spacer, 6-light exit angle, 7-connector, 8-support bar, 9- Upper cover, 10-lower cover, 11-heat transfer plate, 12-cavity (also known as chimney effect zone).
  • the heat dissipating device of the lamp comprises a wall 1, which is also called a heat conducting plate 1.
  • the wall 1 is provided with a plurality of fins 2 on one side thereof, and the adjacent fins 2 have an upper and lower hollow. Space compartment 5.
  • the wall 1 is disposed on the heat sink Both sides are connected to each other through the fins 2, and all of the fins 2 form a heat dissipating space that penetrates up and down.
  • the other side of the wall 1 is provided with a lighting unit 3 which receives the heat emitted from the operation of the lighting unit 3 by conduction, convection and radiation.
  • the lighting unit 3 is a solid state lighting unit and may be an LED or an OLED.
  • 1-10 rows of light emitting units 3 may be disposed on the wall 1.
  • one row of light emitting units 3 is provided.
  • At least one side of the lighting unit 3 is provided with an optical device 4 fixedly connected to the wall 1, and the optical device 4 forms an exit angle 6 with the wall 1 for reflecting or refracting light.
  • the optical device 4 can be a reflective bowl or a reflector or lens. In this way, a portion of the upward light can be reflected or refracted below for illumination.
  • the heat dissipation space has a height of 1 mm to 300 mm; a width of 10 mm to 800 mm; and a length of 10 mm to 10,000 mm.
  • the heat dissipation space has a height of 20 mm, a width of 200 mm, and a length of 2000 mm.
  • Each of the ribs 2 may have a thickness of 0.1 to 20 mm, and adjacent ribs 2 have a separation distance of 1 to 100 mm.
  • each of the ribs 2 has a thickness of 2 mm, and the adjacent ribs 2 have a separation distance of 8 mm.
  • the upper and lower surfaces of the rib 2 are straight or oblique or curved.
  • the upper surface of the rib 2 is curved. In this way, it is beneficial for the air to take away foreign objects such as plastic bags and leaves.
  • the rib 2 may be a straight or sloping plate or a curved plate or a symmetrical plate composed of two slanted plates or two curved plates.
  • the rib 2 is a straight plate; as shown in Fig. 3, the rib 2 is a slanted plate; as shown in Fig. 4, the rib 2 is a curved plate; as shown in Fig. 5, the rib 2 is symmetrical with two inclined plates.
  • the swash plate type plate; as shown in Fig. 6, the rib piece 2 is a symmetrical curved plate type plate composed of two curved plates. In this way, it is advantageous to increase the heat dissipation area.
  • the walls 1 are disposed on both sides of the heat sink and are connected to each other by the ribs 2, all of which form an upper and lower heat dissipation space.
  • the heat dissipating space is located inside the heat dissipating device, that is, inside the space formed by the wall 1 or both, so that the outer casing of the present invention has no sharp portion, and is more safe than the conventional lamp.
  • a connecting plate may be provided at both ends of the side walls 1, which serves as a reinforcing member and serves as a part of the outer casing.
  • the angle between the two side walls 1 is 0-180 degrees.
  • a common angle between the two side walls 11 is 0 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees or 150 degrees.
  • the included angle in this embodiment is 45 degrees.
  • a heat pipe or a heat transfer bar connected to the wall 11 may be provided in the heat sink 2. Therefore, the heat sink 2 can not only transfer heat through the wall 1, but also obtain heat through the heat pipe (rod or the like) embedded in the rib 2, or even completely pass through the heat pipe (rod, etc.) embedded in the rib 2. To get heat.
  • the heat sink is a metal or non-metal material that conducts heat well.
  • the metal can be copper or aluminum or an alloy thereof.
  • the non-metallic material may be graphite.
  • the device works like this: The heat generated by the plurality of light-emitting units 3 during operation is conducted by conduction, convection, radiation, etc.
  • the wall 11 is reached and passed to the ribs 2, with spaced spaces 5 between the adjacent ribs 2 being hollowed up and down.
  • the ribs 2 heat the air in the space 5, the air is heated and then moved upward, and the cold air in the lower part is replenished and reciprocated to achieve the heat dissipation effect.
  • the upper half is a rib and the lower half is mounted with an LED.
  • the cold air is difficult to enter the heat exchange area, that is, the heat dissipation space, so the convection heat dissipation efficiency is low.
  • the adjacent ribs 2 have the space 5 for up and down hollowing, the cold air can continuously enter the heat exchange area, thereby improving the efficiency of heat dissipation. Therefore, compared with the traditional heat dissipation method, with the revolutionary improvement, the heat dissipation efficiency has been greatly improved.
  • each rib 2 in this embodiment is longer than the ribs of the conventional luminaire, that is, the width.
  • the direction is longer, so it has a larger heat dissipation area, which further improves the heat dissipation effect.
  • the ribs 2 have a high height, the hot air can obtain a certain ascending acceleration due to the chimney effect, so that an air pressure difference is formed between the lower and lower sides of the lamp, and the pressure difference drives the cold air under the lamp to continuously fill the heat dissipation space. Reciprocating, achieving accelerated convection, complete heat exchange, and achieve very good heat dissipation.
  • the middle portion of the rib 2 is provided with a support strip 8 for supporting the entire heat sink. It is used for the fixing of the luminaire, which is good for stress and extends the length of the luminaire.
  • the cross section of the support strip 8 may be a circular, square, triangular, trapezoidal or the like, which is trapezoidal in this embodiment.
  • each of the side walls 1 is composed of 1 to 15 sets of heat conducting plates 11 , and each of the heat conducting plates 11 can be provided with 1 to 100 rows of light emitting units 3 .
  • the angle between adjacent heat conducting group plates 11 is 0-180 degrees.
  • the angle between the adjacent heat conducting group plates 11 is 10 degrees, and one row of the light emitting units 3 may be disposed on each of the heat conducting group plates 11.
  • the light-emitting range of the light-emitting unit 3 can be enlarged without using the optical device 4, and more light can be irradiated downward.
  • upper and lower covers 9, 10 with vent holes are provided above or below or above and below the ribs 2 to prevent debris clips.
  • the vent holes may be in the shape of a square, a triangle, a circle, a hexagon, or the like.
  • the heat dissipating space may be disposed at an upper portion, a middle portion, or a lower portion of a space formed by the side walls 1, and the remaining portion is a cavity 12.
  • the heat dissipation space is disposed at a lower portion of a space formed by the two side walls 1, and the upper portion is a cavity 12.
  • the cavity 12 also known as the chimney effect zone, can accelerate the flow of air, increase the heat exchange rate, and improve the heat dissipation capability.
  • the heat sink can be equipped with an upper or lower cover, or both, and no upper and lower covers.
  • the heat sink is provided with the light-emitting unit 3 only on the wall 1 on one side. You can use one side to light out and the other side to use it (power, control signals, other electronic devices, etc.) to achieve reverse asymmetric fill light.
  • the heat dissipating device is bilaterally symmetrical, and the left and right portions are manufactured separately, and the ribs 2 on the left and right sides are connected by the intermediate connecting member 7.
  • the luminaires can be made in only half and then combined by an intermediate connection (structural connection or screw connection). It is convenient for transportation and convenient for large-scale production.
  • the invention improves the heat dissipation method of low-efficiency heat convection and low heat radiation outside the high-efficiency heat conduction lamp in the traditional lamp, and greatly accelerates the convection heat dissipation capability by the upper and lower hollowing design, thereby effectively improving the overall heat dissipation effect and reducing the overall heat dissipation effect.
  • the overall temperature rise thus expands the application of LEDs and extends the life of the lamps.
  • the heat dissipation method of this structure is especially suitable for high-power chips such as 0.1 watts or more, and is particularly suitable for ultra-high power chips such as 5 watts, 10 watts, 20 watts, 50 watts, 100 watts, and the like.
  • the invention is suitable for the natural heat dissipation (above 10 watts) of high-power LED lamps, and is especially suitable for the natural heat dissipation of lamps above 100 watts.
  • the invention is suitable for lamps in any environment, such as: indoor lighting, road traffic lighting, architectural flood lighting, stadium and stadium lighting.

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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)

Description

灯具的散热装置 技术领域
本发明涉及一种灯具， 尤其涉及一种灯具的散热装置。 背景技术
LED( Light Emitting Diode )即发光二极管， OLED( Organic Light Emitting Diode , OLED ) 即有机发光二极管， 具有发光效率高、 省电和寿命长等优点。 但是单个发光体的发光量有限， 不能满足日常的照明需求， 需要将多个发光体密集排布在一起集成使用。 这会造成热量大量 聚集在较小的空间内而不能迅速散发， 当上述发光体在温度很高的环境下工作时， 就会迅速 老化， 使得它的寿命大大的缩短。 随着 LED技术的发展， 越来越多的灯具使用 LED作为发 光源， 但是散热不佳一直是困扰着 LED灯具的一个主要问题。 传统的 LED灯具一般分为上 下两半， 上半部为散热片或散热柱， 下半部安装 LED作为出光口； 有些厂家使用热管系统， 灯具的散热片或散热柱和出光口在灯具下半部。 这样的灯具， 缺点非常的明显， 不但不利于 空气对流带走热量， 而且上半部安装散热片或散热柱， 长时间使用后， 会使得灰尘杂物积累 在散热片或散热柱的根部， 影响散热的效果。 而且， 传统结构在制造工艺上， 很难制造出较 长高度的散热片或散热柱， 因此散热面积比较小而影响散热面积。 发明内容
本发明的目的在于提供一种灯具的散热装置， 具有上下贯通的散热空间， 可以加速空气 形成上下对流以迅速带走热量。
本发明的目的是通过如下技术方案实现的：
一种灯具的散热装置， 包括壁， 所述壁的一侧设有数片肋片， 所述相邻散热片之间具有 上下镂空的间隔空间。
所述壁设置在散热装置的两侧， 并通过所述肋片相互连接， 所有肋片形成上下贯通的散 热空间。
所述散热片的上方或下方或上下两方设有带有通气孔的盖板。
所述散热空间设置在两侧壁所形成的空间的上部、 中部或下部， 其余部分为空腔。
所述散热装置左右对称， 且左右两部分分体制造， 通过一中间连接件连接左右两部分而 成。 所述两侧壁之间的夹角为 0- 180度。
所述两侧壁之间的夹角为 0度、 45度、 60度、 90度、 120度、 135度或 150度。
所述散热空间高度为 lmm到 300mm; 宽度为 10mm至 800mm, 长度为 10mm至 10000mm。 所述壁的另一侧设有发光单元， 壁通过传导、 对流、 辐射方式接收来自发光单元的热量。 所述壁设置在散热装置的两侧，且仅在一侧的壁设有发光单元。
所述发光单元的至少一侧设有一与壁固定连接的光学器件， 所述光学器件与所述壁形成 用于反射或折射光线的出光角。
所述光学器件为反光碗或反光杯或透镜。
所述每片肋片的厚度为 0.1~20mm, 相邻肋片的间隔距离为 l~100mm。
所述每片肋片的厚度为 2mm, 相邻肋片的间隔距离为 8mm。
所述散热片的上、 下表面是直形的或斜形的或弧形的。 所述每侧壁由 1~15组导热组板组成，每片导热组板上设有 1~100排发光单元，相邻导热组 板之间的夹角为 0-180度。
所述发光单元为固态照明单元。
所述发光单元为 LED或 OLED。
所述壁上设有 1-10排发光单元。
所述散热片中部设有用于支撑整个散热装置的支撑条。
所述散热片中设有与壁相连接的导热管或导热棒。
所述散热装置为导热良好的金属或非金属材料。
所述金属为铜或铝或其合金， 所述非金属材料为石墨。
本发明的有益效果如下：
本发明结构筒单、 外观美观， 适于于大规模生产。 本发明相对于传统的灯具的散热装置， 由于相邻散热片之间具有上下镂空的间隔空间， 因而， 更加符合空气的流动特性， 有利于热 量的转移。 故不但可以通过热辐射来散热， 同时还可以通过加速自下而上的空气对流来实现 散热。 因而， 相比于传统的以传统以灯具内高热传导灯具外低热对流的散热方式， 有了革命 性改进， 散热效率有了很大的提高， 可以获得更低的温升， 大大减少了灯体外壳与空气的温 差， 并且可以获得小巧的外形。 而且， 镂空的结构设计相较于传统的散热装置， 不易积灰尘， 确保其长时间使用的效果。 另外， 相比传统的上半部为散热片、 下半部安装 LED的灯具， 在灯具体积相同的情况下， 本实施例中的每片散热片比传统的灯具的散热片更长即高度方向更长， 因而其具有更大的散 热面积， 进一步提高了散热效果。 同时， 由于散热片具有较高的高度， 热空气由于烟囱效应 可以获得一定的上升加速， 这样在灯具上下面间形成空气压差， 压差带动灯具下面的冷空气 不断补进散热空间， 如此往复， 实现加速对流， 完成热交换， 达到更好的散热效果， 进一步 提高散热效率。
另外， 所述散热空间设于散热装置的内部， 即位于两侧壁形成的空间内部或两者重合， 因此本发明外壳无尖锐部分， 相比于传统灯具， 更加的安全。 附图说明
图 1为本发明灯具的散热装置的结构剖视示意图；
图 2为本发明灯具的散热装置的俯视局部示意图 （直板型）；
图 3为本发明灯具的散热装置的俯视局部示意图 （斜板型）；
图 4为本发明灯具的散热装置的俯视局部示意图 （曲板型）；
图 5为本发明灯具的散热装置的俯视局部示意图 （对称斜板型）；
图 6为本发明灯具的散热装置的俯视局部示意图 （对称曲板型）；
图 Ί为设有支撑条的灯具的散热装置的结构剖视示意图；
图 8为设有支撑条的灯具的散热装置的俯视局部示意图；
图 9为本发明灯具的散热装置一变形的结构剖视示意图；
图 10为本发明灯具的散热装置另一变形的结构剖视示意图；
图 11为本发明灯具的散热装置另一变形的结构剖视示意图；
图 12为本发明灯具的散热装置另一变形的结构剖视示意图；
图 13为本发明灯具的散热装置另一变形的结构剖视示意图；
图中： 1-壁（亦称导热板）， 2-散热片， 3-发光单元， 4-光学器件， 5-间隔空间， 6-出光角， 7-连接件， 8-支撑条， 9-上盖板， 10-下盖板， 11-导热组板， 12-空腔（亦称烟囱效应区）。 具体实施方式
下面结合附图对本发明作进一步的描述。
请参见图 1和图 2: 这种灯具的散热装置， 包括壁 1 , 亦称导热板 1 , 所述壁 1的一侧设 有数片散热片 2,相邻散热片 2之间具有上下镂空的间隔空间 5。 所述壁 1设置在散热装置的 两侧， 并通过所述散热片 2相互连接， 所有散热片 2形成上下贯通的散热空间。 所述壁 1的另一侧设有发光单元 3 , 壁 1通过传导、 对流、 辐射方式接收来自发光单元 3 工作时发出的热量。 所述发光单元 3为固态照明单元， 可以是 LED或 OLED。 所述壁 1上可 以设置 1-10排发光单元 3。 本实施例中设有 1排发光单元 3。 所述发光单元 3的至少一侧设 有一与壁 1 固定连接的光学器件 4, 所述光学器件 4与所述壁 1形成用于反射或折射光线的 出光角 6。 所述光学器件 4可以为反光碗或反光杯或透镜。 如此， 可以将一部分向上的光线 反射或折射到下方用于照明。
所述散热空间高度为 1mm到 300mm; 宽度为 10mm至 800mm; 长度为 10mm至 10, 000mm。 本实施例中， 所述散热空间高度为 20mm; 宽度为 200 mm; 长度为 2000mm。 所述 所述每片肋片 2的厚度可以为 0.1~20mm, 相邻肋片 2的间隔距离为 l~100mm。 本实施例中， 每片肋片 2的厚度为 2mm, 相邻肋片 2的间隔距离为 8mm。 所述肋片 2的上、 下表面是直形 的或斜形的或弧形的。 所述肋片 2的上表面是弧形的。 如此， 有利于空气带走塑料袋、 树叶 等异物。
所述肋片 2可以为直板或斜板或曲板或由两斜板或两曲板组成的对称型板。 如图 2所示 肋片 2为直板； 如图 3所示肋片 2为斜板； 如图 4所示肋片 2为曲板； 如图 5所示肋片 2为 两斜板组成的对称斜板型板； 如图 6所示肋片 2为两曲板组成的对称曲板型板。 如此， 有利 于散热面积的增加。
所述壁 1设置在散热装置的两侧， 并通过肋片 2相互连接， 所有所述肋片 2形成上下贯 通的散热空间。 所述散热空间位于散热装置的内部， 即位于壁 1形成的空间内部或两者重合， 因此本发明外壳无尖锐部分， 相比于传统灯具， 更加的安全。 可以在两侧壁 1的两端设置连 接板， 该连接板起到加固作用， 并作为外壳的一部分。
所述两侧壁 1之间的夹角为 0-180度。 所述两侧壁 11之间的常用的夹角为 0度、 45度、 60度、 90度、 120度、 135度或 150度。 本实施例中的所述夹角为 45度。
可以在所述散热片 2中设有与壁 11相连接的导热管或导热棒。 因此， 散热片 2不仅可以 通过壁 1流入热量， 也可通过肋片 2中预埋的导热管 （棒等）来获得热量， 或者甚至完全通 过肋片 2中预埋的导热管 （棒等）来获得热量。
所述散热装置为导热良好的金属或非金属材料。 金属可以是铜或铝或其合金。 所述非金 属材料可以是石墨。
本装置是这样工作的： 多个发光单元 3工作时产生的热量通过传导、 对流、 辐射等方式 到达壁 11并传递到肋片 2, 所述相邻肋片 2之间具有上下镂空的间隔空间 5。 肋片 2加热间 隔空间 5中的空气， 空气受热后向上运动， 下部的冷空气进入补充， 不断往复， 达到散热的 效果。
传统的灯具的散热装置， 上半部为肋片、 下半部安装 LED, 冷空气较难进入热交换区域， 即散热空间， 所以其对流散热效率较低。 本实施例由于相邻肋片 2之间具有上下镂空的间隔 空间 5 , 因此， 冷空气可以不断进入热交换区域， 提高了散热的效率。 因而， 相比于传统的 散热方式， 有了革命性改进， 散热效率有了极大的提高。
另外，相比传统的上半部为散热片、下半部安装 LED的灯具，在灯具体积相同的情况下， 本实施例中的每片肋片 2比传统的灯具的肋片更长即宽度方向更长， 因而其具有更大的散热 面积， 进一步提高了散热效果。 同时， 由于肋片 2具有较高的高度， 热空气由于烟囱效应可 以获得一定的上升加速， 这样在灯具上下面间形成空气压差， 压差带动灯具下面的冷空气不 断补进散热空间， 如此往复， 实现加速对流， 完成热交换， 达到了非常好的散热效果。
作为本实施例的进一步改进， 如图 7和图 8所示： 所述肋片 2中部设有用于支撑整个散 热装置的支撑条 8。 用于灯具的固定， 利于受力， 以延长灯具长度。 所述支承条 8的截面可 以是圆形、 方形、 三角、 梯形等样式， 本实施例中为梯形。
作为本实施例的一种变形， 如图 9所示： 所述每侧壁 1由 1~15组导热组板 11组成， 每 片导热组板 11上可设有 1~100排发光单元 3 ,相邻导热组板 11之间的夹角为 0-180度。此处， 相邻导热组板 11之间的夹角为 10度， 每片导热组板 11上可设有 1排发光单元 3。 如此， 可 以在不使用光学器件 4的情况下， 扩大发光单元 3的发光范围， 使更多的光线向下照射。
作为本实施例的另一种变形， 如图 10所示： 所述肋片 2的上方或下方或上下两方设有带 有通气孔的上、 下盖板 9、 10, 防止杂物卡夹在肋片 2内。 所述通气孔可以是方形、 三角形、 圆形、 六边形等形状。
作为本实施例的另一种变形， 如图 11所示： 所述散热空间可以设置在两侧壁 1所形成的 空间的上部、 中部或下部， 其余部分为空腔 12。 本实施例中， 所述散热空间设置在两侧壁 1 所形成的空间的下部，上部为空腔 12。所述空腔 12, 亦称烟囱效应区，可以加速空气的流动， 提高热交换速度， 提高散热能力。 本散热装置可带上或下盖板、 也可都带、 也可无上下盖板。
作为本实施例的另一种变形， 如图 12所示： 所述散热装置仅在一侧的壁 1设有发光单元 3。 可以一边出光， 另一边留作他用 （电源、 控制信号、 其他电子设备等等）， 来实现逆向非 对称补光。 作为本实施例的另一种变形， 如图 13所示： 所述散热装置左右对称， 且左右两部分分体 制造， 通过中间连接件 7连接左右两边的肋片 2而成。 灯具的可以仅制造一半， 然后通过中 间的连接（结构连接或螺钉等连接）合成。 以方便运输， 方便规模化生产。
综上所述， 本发明一改传统灯具内高效率热传导灯具外低效率热对流和低热辐射的散热 方式， 通过上下镂空设计极大加速了对流散热能力， 有效提高了整体的散热效果， 降低了整 体的温升， 因而扩大了 LED的应用场合， 延长了灯具的寿命。 这种结构的散热方式， 特别适 合于大功率的芯片如 0.1瓦以上， 尤其适合于超大功率的芯片如 5瓦、 10瓦、 20瓦、 50瓦、 100瓦等等。 因而， 适合于大功率的 LED灯具的自然散热 （ 10瓦以上）， 特别适合于 100瓦 以上灯具的自然散热。 本发明适合于任意环境下的灯具， 例如： 室内照明灯具、 道路交通照 明灯具、 建筑泛光照明灯具、 体育场和体育馆照明灯具等。
虽然本发明已以较佳实施例揭露如上， 然其并非用以限定本发明。 本发明所属技术领域 中具有通常知识者， 在不脱离本发明的精神和范围内， 当可作各种的更动与润饰。 因此， 本 发明的保护范围当视权利要求书所界定者为准。

Claims

权利要求
1、 一种灯具的散热装置， 包括壁， 所述壁的一侧设有数片肋片， 其特征在于： 所述相邻 肋片之间具有上下镂空的间隔空间。
2、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述壁设置在散热装置的两侧， 并通过所述肋片相互连接 , 所有肋片形成上下贯通的散热空间。
3、 根据权利要求 2所述的灯具的散热装置， 其特征在于： 所述肋片的上方或下方或上下 两方设有带有通气孔的盖板。
4、 根据权利要求 2所述的灯具的散热装置， 其特征在于： 所述散热空间设置在两侧壁所 形成的空间的上部、 中部或下部， 其余部分为空腔。
5、 根据权利要求 2所述的灯具的散热装置， 其特征在于： 所述散热装置左右对称， 且左 右两部分分体制造， 通过一中间连接件连接左右两部分而成。
6、 根据权利要求 2所述的灯具的散热装置， 其特征在于： 所述两侧壁之间的夹角为 0-180 度。
7、 根据权利要求 6所述的灯具的散热装置， 其特征在于： 所述两侧壁之间的夹角为 0度、 45度、 60度、 90度、 120度、 135度或 150度。
8、 根据权利要求 2所述的灯具的散热装置， 其特征在于： 所述散热空间高度为 lmm到 300mm; 宽度为 10mm至 800mm, 长度为 10mm至 10000mm。
9、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述壁的另一侧设有发光单元， 壁通过传导、 对流、 辐射方式接收来自发光单元的热量。
10、根据权利要求 9所述的灯具的散热装置，其特征在于：所述壁设置在散热装置的两侧， 且仅在一侧的壁设有发光单元。
11、根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述发光单元的至少一侧设有 一与壁固定连接的光学器件， 所述光学器件与所述壁形成用于反射或折射光线的出光角。
12、 根据权利要求 11所述的灯具的散热装置， 其特征在于： 所述光学器件为反光碗或反 光杯或透镜。
13、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述每片肋片的厚度为 0.1~20mm, 相邻肋片的间隔 3巨离为 l~100mm。
14、根据权利要求 13所述的灯具的散热装置， 其特征在于： 所述每片肋片的厚度为 2mm, 相邻肋片的间隔距离为 8mm。
15、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述肋片的上、 下表面是直形 的或斜形的或弧形的。
16、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述肋片为直板或斜板或曲板 或由两斜板或两曲板组成的对称型板。
17、根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述每侧壁由 1~15组导热组板 组成， 每片导热组板上设有 1~100排发光单元， 相邻导热组板之间的夹角为 0-180度。
18、根据权利要求 1所述的灯具的散热装置，其特征在于：所述发光单元为固态照明单元。
19、根据权利要求 18所述的灯具的散热装置，其特征在于：所述发光单元为 LED或 OLED。
20、根据权利要求 1所述的灯具的散热装置，其特征在于： 所述壁上设有 1-10排发光单元。
21、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述肋片中部设有用于支撑整 个散热装置的支撑条。
22、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述散热片中设有与壁相连接 的导热管或导热棒。
23、 根据权利要求 1所述的灯具的散热装置， 其特征在于： 所述散热装置为导热良好的金 属或非金属材料。
24、 根据权利要求 23所述的灯具的散热装置， 其特征在于： 所述金属为铜或铝或其合金, 所述非金属材料为石墨。
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