WO2010099733A1 - 中空式液冷led灯 - Google Patents

中空式液冷led灯 Download PDF

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Publication number
WO2010099733A1
WO2010099733A1 PCT/CN2010/070817 CN2010070817W WO2010099733A1 WO 2010099733 A1 WO2010099733 A1 WO 2010099733A1 CN 2010070817 W CN2010070817 W CN 2010070817W WO 2010099733 A1 WO2010099733 A1 WO 2010099733A1
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WO
WIPO (PCT)
Prior art keywords
hollow
liquid
heat
cover
led
Prior art date
Application number
PCT/CN2010/070817
Other languages
English (en)
French (fr)
Inventor
华桂潮
Original Assignee
Hua Guichao
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 Hua Guichao filed Critical Hua Guichao
Publication of WO2010099733A1 publication Critical patent/WO2010099733A1/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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • 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
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • 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
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/061—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being glass
    • 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]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Definitions

  • the present invention relates to an LED lamp, and in particular to an LED lamp that uses a liquid to help dissipate heat. Background technique
  • the construction of the illumination device includes a power converter that provides a desired output voltage and an optical engine having a substrate having a high thermal conductivity, a plurality of LED semiconductor devices mechanically coupled to the substrate, mounted on the substrate and surrounding the LED device At least a portion of the peripheral bank, and a substantially transparent polymeric encapsulant disposed on the plurality of LED devices and bounded by the peripheral banks.
  • the luminaire heat sink is a solid material with suitably high thermal conductivity and appropriate stiffness to dissipate heat from other components of the LED lighting device.
  • the heat shield is constructed as a plurality of posts, thereby increasing the surface area of the heat sink to dissipate a significant amount of heat.
  • Such a heat shield has a heavy weight, a large amount of metal, a complicated manufacturing, and a high cost.
  • Cip. CN 2735548 discloses a high-power LED heat dissipation structure, which comprises a housing base, a heat dissipation box, a circuit substrate and at least one high-power LED, and the heat-dissipating box houses a heat-conducting liquid. Since the heat-conducting liquid sealed in the heat-dissipating box has good thermal conductivity, the thermal resistance of the metal is smaller than that of the solid metal, and the purpose is to reduce the thermal resistance between the heating element and the heat-dissipating surface. Therefore, a smaller heat dissipation area can be used to obtain a large-area heat dissipation effect. Therefore, this technical solution can solve this problem to a large extent. However, since the heat transfer liquid takes up more internal space, it also increases the product's Weight and installation difficulty reduce product safety (Figure 2). Summary of the invention
  • the present invention provides a hollow liquid cooled LED lamp.
  • Hollow liquid-cooled LED lamp comprising an electrical connector, a power supply, a lamp holder, an upper hollow heat shield, an LED mounting substrate, an LED and a lower astigmatism lamp cover, wherein the astigmatism lamp cover adopts a substantially transparent material, characterized in that The cavity of the hollow heat sink is filled with a heat conductive liquid.
  • the hollow liquid-cooled LED lamp of the invention has high performance heat-conducting liquid (for example, water, heat-conducting oil, brine, ethylene glycol solution, di-methane saturated solution, etc.) in the hollow heat-dissipating cover, and is realized by conduction and convection. Heat conduction to achieve good heat dissipation.
  • the hollow heat shield with high-performance heat-conducting liquid can be made of lightweight materials, which is light in weight, environmentally friendly and durable, simple to manufacture, and low in cost.
  • the heat-conducting liquid of the present invention is directly filled in the hollow cavity of the hollow heat-dissipating cover, the heat-dissipating effect is improved without increasing the volume of the product, and greatly under the condition that the heat-dissipating effect is not substantially affected.
  • the weight of the heat dissipating liquid in the original invention is alleviated.
  • the hollow heat dissipation cover may have a shape of a bottom end opening and form a sealed connection with the periphery of the LED mounting substrate, and an upper surface of the LED mounting substrate is in contact with the heat conductive liquid, thereby emitting the LED The heat is conducted out through the heat transfer liquid.
  • the hollow heat sink has a top portion and is connected to the bottom of the lamp holder through a sealing gasket.
  • the heat transfer liquid may be any solution having no freeze, no corrosivity, no flammability, no toxicity, such as water, heat transfer oil, brine, ethylene glycol solution or dimethane saturated solution.
  • the thermally conductive liquid can be a conductive or non-conductive liquid.
  • the hollow heat sink is made of plastic, glass or metal material, preferably a lightweight material.
  • the hollow cavity of the inner and outer interlayers of the hollow heat sink is filled with a heat-conducting liquid.
  • the outer surface of the hollow heat-dissipating lamp cover has a continuous smooth transition surface such as a smooth surface, a corrugated surface or the like.
  • the hollow heat-dissipating cover may also have a discontinuous surface, such as a smear.
  • the astigmatism lamp cover is made of glass or PMMA material.
  • FIG. 1 is an isometric view of a prior art L E D lighting device
  • FIG. 2 is a schematic view of a liquid-cooled L E D lighting device of the prior art
  • Fig. 3 is a schematic view showing a hollow liquid-cooled LED according to a first embodiment of the present invention.
  • FIG. 4 is a schematic view of a hollow liquid cooling LED according to a second embodiment of the present invention.
  • Fig. 5 is a schematic view showing a hollow liquid-cooled LED according to a third embodiment of the present invention.
  • Fig. 6 is a schematic view showing a hollow liquid cooling LED according to a fourth embodiment of the present invention.
  • Fig. 7 is a schematic view showing a hollow liquid-cooled LED according to a fifth embodiment of the present invention.
  • Fig. 8 is a schematic view showing a hollow liquid-cooled LED according to a sixth embodiment of the present invention.
  • Fig. 9 is a schematic view showing a hollow liquid-cooled LED according to a seventh embodiment of the present invention. Specific implementation
  • an embodiment of the present invention provides a hollow liquid-cooled LED lighting lamp, including a plug-in type electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat dissipation.
  • the electrical connector 1 is disposed at a lower portion of the LED lamp head to be connected to the mains, and is connected to the input of the LED power source 2, wherein the hollow cavity of the hollow heat sink 6 is filled with a high-performance heat-conducting liquid, and the LED power source is 2 is disposed in a space formed by the hollow heat dissipation cover 6, wherein the LED 8 is disposed on the LED aluminum substrate 7, and the periphery of the LED aluminum substrate 7 is closely connected to the lower end of the hollow heat dissipation cover 6, and the LED 8 is disposed.
  • the astigmatism lamp cover 9 is connected to the hollow heat dissipation cover 6.
  • the electrical connector 1 is of a pin type, and the specification thereof may also be a spiral type or the like.
  • the hollow heat-dissipating cover 6 and the LED aluminum substrate 7 according to the embodiment of the present invention constitute an enclosed body, and the hollow cavity is filled with a high-performance heat-conductive liquid 5.
  • the hollow heat dissipation cover 6 according to the embodiment of the present invention has a top opening shape and is connected to the bottom of the lamp holder through a sealing gasket.
  • the hollow heat shield 6 is made of plastic or glass or other lightweight environmentally friendly materials. In various embodiments, the hollow heat shield 6 can be fabricated substantially in any shape and anywhere from a continuous, substantially "smooth" surface to an interrupted discontinuous surface (e.g., a slab).
  • the hollow heat shield 6 can have a similar shape to a commercial standard light bulb. It should be understood that in the scope of the present invention, almost any shape of the bulb can be simulated or substantially simulated, and And the hollow heat sink cover 6 can be constructed in any shape and still fall within the scope of the present invention.
  • the hollow heat shield 6 can be configured in a variety of shapes and sizes that facilitate dissipation of thermal energy, such as by increasing the area of the hollow heat shield 6.
  • the heat transfer liquid 5 is a liquid material having a suitably high thermal conductivity, strong fluidity, exerting slowness and appropriate stability to dissipate heat from other components of the LED lighting device.
  • a thermal fluid the following factors must be considered: heat transfer capacity of the heat transfer liquid; freezing point and viscosity of the heat transfer liquid; boiling point and decomposition temperature of the heat transfer liquid; corrosion of the heat transfer liquid; flammability, toxicity, cost, etc. of the heat transfer liquid.
  • the heat transfer liquid can be a conductive liquid or a non-conductive liquid.
  • the LED 8 of the embodiment of the present invention is closely connected to the LED aluminum substrate 7 through the thermal conductive insulating film and the thermal conductive insulating tape, and the periphery of the LED aluminum substrate 7 is closely connected with the lower end of the hollow heat dissipation cover 6, and the upper surface of the LED aluminum substrate 7 is in contact with the heat conductive liquid 5. Conduct heat conduction through conduction and convection.
  • the LED 7 of the embodiment of the present invention is disposed in the astigmatism lamp cover 9.
  • the astigmatism lamp cover 9 may be a hollow hemispherical body or other shape that is open at one end, and is connected with the hollow heat dissipation cover 6, and its size and hollow heat dissipation.
  • the size of the cover 6 and the size of the hollow liquid-cooled LED lamp head can be adapted.
  • the astigmatism lampshade 9 is made of a transparent material, such as glass or PMMA, and the surface is treated with sandblasting, dusting, etc., to achieve different illuminating effects as needed. Different light intensity and illumination areas can also be achieved by adjusting the surface curvature of the lampshade.
  • the LED lamp power supply 2 according to the embodiment of the present invention is placed in a space formed by the hollow heat dissipation cover 6.
  • the LED power supply 2 supplies power to the LED via the power line 12, and the LED light source 2 is a switching power supply, which can be used for power supply.
  • the LED light source 2 can be a non-isolated power source.
  • the embodiment of the present invention provides a hollow liquid-cooled LED illumination lamp, including a plug-in type electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat dissipation.
  • the outer surface 10 of the hollow heat-dissipating cover 6 can be constructed as a plurality of horns, and the high-temperature heat-conducting liquid 5 is also contained in the swarf, thereby increasing the surface area of the hollow heat-dissipating cover 6, and the hollow heat-dissipating cover 6 can thus dissipate a large amount of heat.
  • Each of the piles is configured such that the outer edge presents a section of a cross-section of a commercial standard bulb that is substantially similar in sequence to a commercial standard bulb.
  • the remaining structure of the hollow type hollow liquid-cooled LED illumination lamp according to the embodiment of the present invention is the same as the first example described above.
  • FIG. 5 it is a third embodiment of the present invention.
  • the embodiment of the present invention provides a hollow liquid-cooled LED illumination lamp, including a plug-in type electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat dissipation.
  • the outer surface 10 of the hollow heat shield 6 can be constructed as a plurality of fins, thereby increasing the surface area of the hollow heat shield 6, and the hollow heat shield 6 can thus dissipate a large amount of heat.
  • Each fin is configured such that the outer edge presents a section of a cross section of a commercial standard bulb that is substantially similar to a commercial standard bulb in sequence.
  • the remaining structure of the hollow type hollow liquid LED lighting lamp according to the embodiment of the present invention is the same as the first example described above.
  • an embodiment of the present invention provides a hollow liquid-cooled LED lighting lamp, including a spiral electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat-dissipating cover. 6.
  • the electrical connector 1 according to the embodiment of the present invention is of a spiral type, and the remaining structure is the same as the first example described above.
  • FIG. 7 which is a fifth embodiment of the present invention, an embodiment of the present invention provides a hollow liquid-cooled LED lighting lamp, a plug-in type electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat-dissipating cover. 6.
  • the LED lamp power supply 2 according to the embodiment of the present invention is placed in the upper portion of the hollow heat dissipation cover 6, and the lamp holder is formed in the space. LED lamp 8 and LED lamp power supply 2 As two heat sources, conduction and convection can better achieve conduction heat.
  • the remaining structure of the hollow liquid-cooled LED lighting lamp according to the embodiment of the present invention is the same as the first example described above.
  • an embodiment of the present invention provides a hollow liquid-cooled LED lighting lamp, a plug-in type electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat-dissipating cover. 6.
  • the LED 8 according to the embodiment of the present invention is fixed on the aluminum substrate 7, and is integrally placed in the heat-conductive liquid in the cavity of the hollow heat-dissipating cover 6. This reduces the thermal resistance between the LED lamp heat source and the heat transfer liquid, which is more conducive to heat dissipation.
  • the LED power supply 2 according to the embodiment of the present invention is placed in a space formed by the hollow heat dissipation cover 6, and is connected to the plug-in type electrical connector 1 through the power supply line 12.
  • an embodiment of the present invention provides a hollow liquid-cooled LED lighting lamp, a plug-in type electrical connector 1, an LED power source 2, a lamp holder 4, and a hollow heat-dissipating cover. 6.
  • the LED 8 according to the embodiment of the present invention is fixed on the aluminum substrate 7 and placed in the heat-conductive liquid in the cavity of the hollow heat-dissipating cover 6. This reduces the thermal resistance between the LED lamp heat source and the heat transfer liquid, which is more conducive to heat dissipation.
  • the LED power source 2 according to the embodiment of the present invention is placed on the upper portion of the hollow heat dissipation cover 6, and the lamp holder is formed in the space.
  • the LED lamp 8 and the LED lamp power supply 2 serve as two heat sources, and conduction heat can be better realized by conduction and convection.
  • the remaining structure of the hollow liquid-cooled LED illumination lamp described in the embodiment of the present invention is the same as the first example described above.
  • the shape of the plug of the hollow liquid-cooled LED lamp head, the hollow heat-dissipating cover of the LED illumination lamp, the LED lamp cover and the LED lamp holder provided by the embodiment of the invention can have many options according to different application conditions and requirements. Various changes in form and detail fall within the scope of this patent.
  • the invention is mainly used for indoor or outdoor LED lighting of various power levels in homes and public places, and is suitable for low-power LED lighting, such as indoor lighting LED lamps, and also for high-power LED lighting applications, such as Outdoor LED street light. It is environmentally friendly and durable, yet neat and tidy, giving people a feeling of comfort and beauty. It has the characteristics of compact structure, reasonable layout, good heat dissipation, low cost and light weight. Itsaki shape, energy-saving, liquid heat dissipation and environmentally friendly functional structure, the main body is made of high quality light plastic and glass.

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

Description

中空式液冷 LED灯
技术领域
本发明涉及一种 LED灯， 具体是涉及一种用液体帮助散热的 LED灯。 背景技术
随着大功率 LED技术的发展与成熟，照明用 LED的性能指标日益大幅度提 高。 目前产业化的白光 LED的光效已经达到（70-90) lm/W， 远远超过普通白炽 灯的光效水平， 大功率 LED将在照明领域得到越来越广泛的应用， 人们把它誉 为 21世纪代替荧光灯和白炽灯的***照明光源。
但是由于 LED要在 80摄氏度以下， 才能获得很高的光效和很长的寿命， 因 此对 LED灯的热设计要求很高。 散热不畅会引起 LED光衰， 降低发光效率和使 用寿命。为了获得很好的散热效果，同时又能替代现行的商业标准灯泡，专利（CN 1605790 A LED灯设备及其方法） 提出了一种新的 LED照明装置 （图 1 )。
此照明装置的构造包括提供所需输出电压的电源变换器和具有高导热性基 底的光学引擎， 机械地连接到该基底上的多个 LED半导体装置， 固定在该基底 上并且环绕该 LED装置的至少一部分的***堤， 以及设置在多个 LED装置上并 由***堤限制的基本上透明的聚合体密封剂。
此照明器具散热罩为具有适当高导热性和适当刚度的固体材料，来消散来自 LED 照明装置的其他元件的热量。 例如， 铝合金、 铜合金黄铜、 镁合金、 碳聚 合体、 碳合成物的各种金属和 /或陶瓷。 散热罩构造为多个稽状物， 由此增加散 热罩表面积消散大量的热。 这样的散热罩重量重、 金属用量多、 制造复杂、 成本 高。
为了解决上述问题，中国专利 CN2735548公开了一种高功率 LED散热结构， 它包含壳体基座、 散热箱、 电路基板以及至少一高功率 LED, 所述的散热箱内 封存有导热液体。 由于散热箱内封的导热液体具有良好的导热性能， 比固态的金 属的热阻更小， 目的是为了减小发热体与散热面之间的热阻。 因此可以采用更小 的散热面积， 获得大面积的散热效果。 因而， 该技术方案可以在很大程度上解决 了这一问题。但是， 由于导热液体占用了较多的内部空间， 同时也增加了产品的 重量和安装难度， 降低了产品的安全性 （图 2)。 发明内容
为了克服现有产品的不足， 本发明提供一种中空式液冷 LED灯。
本发明解决现有发明的技术问题所采用的技术方案是：
中空式液冷 LED灯， 包括电连接器、 电源、灯座、上部的中空散热罩、 LED 安装基板、 LED 和下部的散光灯罩， 所述的散光灯罩采用基本透明的材料， 其 特征在于所述的中空散热罩中空腔内充有导热液体。
本发明的中空式液冷 LED灯灯具， 由于在中空散热罩内装有高性能导热液 体 （例如， 水、 导热油、 盐水、 乙二醇溶液、 二甲烷饱和溶液等）， 通过传导和 对流以实现热传导， 从而达到良好的散热效果。 同时， 装有高性能导热液体的中 空散热罩可以由轻质材料制作而成， 这样散热罩重量轻、 环保耐用、 制造简单、 成本低。更为重要的是， 由于本发明的导热液体直接充注在中空散热罩的中空腔 内， 因而在提高散热效果的同时又不会增加产品的体积， 并且在基本不影响散热 效果的条件下大大减轻了原有发明中散热液体的重量。
根据本发明， 所述的中空散热罩可以是底端开口的形状， 并与所述的 LED 安装基板的周边形成密封连接， LED安装基板的上表面与所述的导热液体接触， 从而将 LED发出的热量通过导热液体传导出去。
所述的中空散热罩具有顶部， 通过密封垫圈与灯座底部连接。
根据本发明， 所述的导热液体可以是具有不结冻、 无腐蚀性、 无可燃性、 无 毒性的任何溶液， 如水、 导热油、 盐水、 乙二醇溶液或二甲烷饱和溶液其中的任 何一种。 导热液体可以是导电或非导电液体。
根据本发明， 中空散热罩采用塑料、 玻璃或金属材料， 优选为轻型材料。 根据本发明， 中空散热罩的内外夹层的中空腔内充满导热液体。
根据本发明，所述的中空散热灯罩外表面呈连续的光滑过渡的表面， 如平滑 的表面、 波纹面等。
根据本发明， 所述的中空散热罩外呈还可以呈断续的表面， 如稽状物。 根据本发明， 所述的散光灯罩采用玻璃或 PMMA材料。 附图说明
下面结合附图对本发明做进一步说明， 但本发明的实施方式不限于此。 图 1为现有技术的一种 L E D照明装置的等比例示意图
图 2为现有技术的一种液冷 L E D照明装置示意图
图 3为本发明第一实施例中空式液冷 LED示意图。
图 4为本发明第二实施例中空式液冷 LED示意图。
图 5为本发明第三实施例中空式液冷 LED示意图。
图 6为本发明第四实施例中空式液冷 LED示意图。
图 7为本发明第五实施例中空式液冷 LED示意图。
图 8为本发明第六实施例中空式液冷 LED示意图。
图 9为本发明第七实施例中空式液冷 LED示意图。 具体实施方案
如图 3所示， 其为本发明的第一实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 包括插接式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝 基板 7、 LED 8、 散光灯罩 9、 电源线 12。 所述的电连接器 1设置于 LED灯灯头 的下部连接市电， 其与 LED电源 2的输入连接， 所述的中空散热罩 6的中空腔 内充满有高性能导热液体， 所述的 LED电源 2设置于中空散热罩 6形成的空间 内，所述的 LED 8设置于 LED铝基板 7之上，所述的 LED铝基板 7的周边与中 空散热罩 6下端紧密连接， 所述的 LED 8置于散光灯罩 9内， 散光灯罩 9与中 空散热罩 6连接。
本发明实施例所述的电连接器 1为插针式， 其规格还可以为螺旋式等。 本发明实施例所述的中空散热罩 6与 LED铝基板 7构成封闭体， 中空腔内 装满有高性能导热液体 5。 本发明实施例所述的中空散热罩 6为顶部开口形状， 通过密封垫圈与灯座底部连接。中空散热罩 6由塑料或玻璃或其他轻型环保材料 制作而成。在不同的实施例中， 中空散热罩 6基本上可制造成任何形状， 并有从 连续的、基本"平滑"的表面到中断的不连续的表面（如， 稽状物）的任何地方。 此外，在各种应用和如下所述中， 中空散热罩 6可具有与商业标准灯泡相似的形 状。 应当理解， 在本发明范围中， 几乎可模拟或基本上模拟任何灯泡的形状， 并 且中空散热罩 6可构造为任何形状并仍落在本发明的范围之内。
例如， 根据本发明的不同实施例， 中空散热罩 6可构造成便于热能消散的各 种形状和尺寸， 如通过增大中空散热灯罩 6的面积。
本发明实施例所述的导热液体 5为具有适当高导热性、 强流动性、 发挥缓慢 和适当稳定性的液体材料， 来消散来自 LED照明装置的其他元件的热量。例如， 水、 导热油、 盐水、 乙二醇溶液、 二甲烷饱和溶液等。 选择导热液体时， 下列因 素必须加以考虑： 导热液体的热传递能力； 导热液体的冰点和粘度； 导热液体沸 点和分解温度； 导热液体腐蚀性； 导热液体的可燃性、 毒性、 费用等。 导热液体 可为导电液体或非导电液体。
本发明实施例所述的 LED8通过导热绝缘胶片与导热绝缘胶布与 LED铝基 板 7紧密连接， LED铝基板 7周边与中空散热罩 6下端紧密连接， LED铝基板 7的上表面与导热液体 5接触， 通过传导和对流实现传导热量。
本发明实施例所述的发光二极管 LED 7置于散光灯罩 9内，所述的散光灯罩 9可以是一端开口的中空半球状体或其他形状， 其与中空散热罩 6连接， 其尺寸 与中空散热罩 6尺寸及中空式液冷 LED灯灯头所设计的尺寸相适应即可。 散光 灯罩 9采用透明的材质制作而成， 如玻璃或 PMMA等， 表面再加以喷沙、 喷粉 等处理，根据需要达到不同的发光效果。还可以通过调整灯罩的表面曲率来实现 不同的光线强度和光照面积的需求。
本发明实施例所述的 LED灯电源 2置于中空散热罩 6形成的空间内。 LED 电源 2经电源线 12给 LED供电， LED灯电源 2为开关电源， 其可接市电使用。 当导热液体为非导电液体时， LED灯电源 2可为非隔离型电源。
如图 4所示， 其为本发明的第二实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 包括插接式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝 基板 7、 LED 8、 散光灯罩 9、 电源线 12。 中空散热罩 6外表面 10可构造为多个 稽状物， 稽状物里也装有高性能导热液体 5， 由此增加中空散热罩 6的表面积， 中空散热罩 6因此可消散大量的热。各个稽状物被这样构造以使外边缘呈现商业 标准灯泡的横截面的一段， 该轮廓顺次基本上与商业标准灯泡相似。
本发明实施例所述的中空式中空式液冷 LED照明灯的其余结构与前述的第 一实例相同。 如图 5所示， 其为本发明的第三实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 包括插接式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝 基板 7、 LED 8、 散光灯罩 9、 电源线 12。 中空散热罩 6外表面 10可构造为多个 散热片， 由此增加中空散热罩 6的表面积， 中空散热罩 6因此可消散大量的热。 各个散热片被这样构造以使外边缘呈现商业标准灯泡的横截面的一段，该轮廓顺 次基本上与商业标准灯泡相似。
本发明实施例所述的中空式中空式液冷 LED照明灯的其余结构与前述的第 一实例相同。
如图 6所示， 其为本发明的第四实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 包括螺旋式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝 基板 7、 LED 8、 散光灯罩 9、 电源线 12。
本发明实施例所述的电连接器 1为螺旋式，其余结构与前述的第一实例相同。 如图 7所示， 其为本发明的第五实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 插接式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝基板 7、 LED 8、 散光灯罩 9、 电源线 12。
本发明实施例所述的 LED灯电源 2置于中空散热罩 6上部， 灯座形成空间 内。 LED灯 8和 LED灯电源 2作为两个热源， 通过传导和对流， 可以更好的实 现传导热量。
本发明实施例所述的中空式液冷 LED照明灯的其余结构与前述的第一实例 相同。
如图 8所示， 其为本发明的第六实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 插接式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝基板 7、 LED 8、 散光灯罩 9、 电源线 12。
本发明实施例所述的 LED 8固定在铝基板 7上，整体置于中空散热罩 6腔内 的导热液体中。 这样减少了 LED灯热源至导热液体间的热阻， 更有利于散热。 本发明实施例所述的 LED电源 2置于中空散热罩 6形成的空间内， 通过电源线 12与插接式电连接器 1相连。
本发明实施例所述的中空式液冷 LED照明灯的其余结构与前述的第一实例 相同。 如图 9所示， 其为本发明的第七实施例， 本发明实施例提供一种中空式液冷 LED照明灯， 插接式电连接器 1、 LED电源 2、 灯座 4、 中空散热罩 6、 铝基板 7、 LED 8、 散光灯罩 9、 电源线 12。
本发明实施例所述的 LED 8固定在铝基板 7上， 置于中空散热罩 6腔内的 导热液体中。 这样减少了 LED灯热源至导热液体间的热阻， 更有利于散热。 本 发明实施例所述的 LED电源 2置于中空散热罩 6上部， 灯座形成空间内。 LED 灯 8和 LED灯电源 2作为两个热源， 通过传导和对流， 可以更好的实现传导热 本发明实施例所述的中空式液冷 LED照明灯的其余结构与前述的第一实例 相同。
本发明实施例提供的一种中空式液冷 LED灯头部分的插头、 LED照明灯的 中空散热罩、 LED灯罩、 LED灯座的形状根据不同应用情况及要求可以有很多 选择。 形式和细节上的各种各样变化都落入本专利的保护范围内。
本发明主要用途用于家庭及公共场所的室内或室外各种功率等级的 LED灯 照明， 既适用于低功率的 LED照明使用， 如室内照明 LED灯， 也适用于高功率 的 LED照明场合， 如室外 LED路灯。 既环保耐用， 又整洁大方， 给人以舒适和 美的感觉， 其具有结构紧凑、 布局合理、 散热性能好、 成本低、 重量轻的特点。 其造型精美， 具有节能、 液体散热和环保的功能结构， 主体用优质轻型塑料、 玻 璃制造。
最后， 还需要注意的是， 以上列举的仅是本发明的具体实施例。 显然， 本发 明不限于以上实施例，还可以有许多变形。本领域的普通技术人员能从本发明公 开的内容直接导出或联想到的所有变形， 均应认为是发明的保护范围。
应该理解到的是：上述实施例只是对本发明的说明，而不是对本发明的限制， 任何不超出本发明实质精神范围内的发明创造， 均落入本发明的保护范围之内。

Claims

权利要求书 、 中空式液冷 LED灯， 包括电连接器（1 )、 电源 （2)、 灯座 （4)、 上部的中空 散热罩 （6)、 LED 安装基板 （7 )、 LED ( 8) 和下部的散光灯罩 （9)， 所述 的散光灯罩（9)采用基本透明的材料，其特征在于所述的上部中空散热罩（6) 中空腔内充有导热液体 （5)。 、 如权利要求 1所述的中空式液冷 LED灯， 其特征在于所述的中空散热罩（9) 是底端开口的形状， 并与所述的 LED安装基板 （7) 的周边形成密封连接。 、 如权利要求 1所述的中空式液冷 LED灯， 其特征在于所述的中空散热罩（9) 底端封闭， 所述的 LED安装基板（7)置于中空散热罩（9)的底部中空腔内。 、 如权利要求 1所述的中空式液冷 LED灯， 其特征在于所述的 LED ( 8) 固 定在铝基板 （7) 上， 整体置于中空散热罩 6腔内的导热液体中。 、 如权利要求 1所述的中空式液冷 LED灯，其特征在于所述的导热液体为导电 或非导电液体。 、 如权利要求 5所述的中空式液冷 LED灯， 其特征在于所述的导热液体为水、 导热油、 盐水、 乙二醇溶液或二甲烷饱和溶液其中的任何一种。 、 如权利要求 1所述的中空式液冷 LED灯， 其特征在于所述的中空散热罩（9) 采用塑料、 玻璃或金属材料制成。 、 如权利要求 1所述的中空式液冷 LED灯， 其特征在于中空散热灯罩 （6) 的 外表面 （10) 呈连续的光滑过渡的表面 、 如权利要求 8所述的中空式液冷 LED灯，其特征在于所述的中空散热灯罩 (6) 的外表面 （10) 为平滑的表面或波纹面。0、 如权利要求 1所述的中空式液冷 LED灯， 其特征在于中空散热灯罩（6) 的外表面 （10) 呈断续的表面。
1、 如权利要求 1所述的中空式液冷 LED灯，其特征在于所述的散光灯罩 (9) 采用玻璃或 PMMA材料。
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