WO2018205634A1 - 石墨烯散热led灯 - Google Patents

石墨烯散热led灯 Download PDF

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Publication number
WO2018205634A1
WO2018205634A1 PCT/CN2017/118682 CN2017118682W WO2018205634A1 WO 2018205634 A1 WO2018205634 A1 WO 2018205634A1 CN 2017118682 W CN2017118682 W CN 2017118682W WO 2018205634 A1 WO2018205634 A1 WO 2018205634A1
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WIPO (PCT)
Prior art keywords
light source
led
graphene
source module
platform
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/CN2017/118682
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English (en)
French (fr)
Inventor
陈威
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.)
Huzhou Mingshuo Optoelectronic Technology Co Ltd
Dongxu Optoelectronic Technology Co Ltd
Original Assignee
Huzhou Mingshuo Optoelectronic Technology Co Ltd
Dongxu Optoelectronic Technology Co Ltd
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Application filed by Huzhou Mingshuo Optoelectronic Technology Co Ltd, Dongxu Optoelectronic Technology Co Ltd filed Critical Huzhou Mingshuo Optoelectronic Technology Co Ltd
Priority to CN201780090641.2A priority Critical patent/CN110799790A/zh
Priority to CA3062912A priority patent/CA3062912C/en
Priority to KR1020197033433A priority patent/KR20190133784A/ko
Priority to EP17909235.8A priority patent/EP3640536B1/en
Priority to US16/612,394 priority patent/US11193633B2/en
Priority to JP2019562553A priority patent/JP6890684B2/ja
Publication of WO2018205634A1 publication Critical patent/WO2018205634A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F21V29/74—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
    • 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
    • F21K9/237—Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • 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
    • 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
    • F21V29/745—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades the fins or blades being planar and inclined with respect to the joining surface from which the fins or blades extend
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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 belongs to the technical field of illumination, and in particular relates to a novel graphene heat-dissipating LED lamp.
  • the most commonly used lighting fixtures on urban roads are sodium lamps.
  • a sodium lamp used as a street light produces good road visibility at night. This orange light is strong and soft in the fog, and the objects under this kind of light can be seen clearly. Therefore, many traffic routes and artificial lighting use sodium gas lamps to reduce traffic accidents.
  • the structure of the sodium lamp is as shown in FIG. 1, which is composed of a casing 1, a bracket 2, a ballast 3, a base bracket 4, a base 5, a light source tube 6, a cover 7, and a reflector 8.
  • the outer casing 1 is divided into an upper casing and a lower casing, and the upper casing forms a hollow casing 1.
  • the reflector 8 is fixedly mounted on the lower casing by screws, and is located inside the casing 1, and has a circular opening at the tail of the reflector 8 for
  • the light source tube 6 passes through, and the outer cover 7 is fixedly mounted on the lower casing by the screw and the presser foot corresponding to the reflector 8, and is located outside the outer casing 1.
  • the ballast 3 is fixedly mounted on the bracket 2 by screws.
  • the base bracket 4 is externally attached to the bracket 2, and the base 5 is mounted on the base bracket 4 and connected to the light source tube 6.
  • the bracket 2 is fixed to the lower casing of the casing 1 by screws, and the lamp holder 4, the lamp cap 5 and the light source lamp tube 6 pass through the circular opening at the tail of the reflector 8, and are located in the closed space formed by the reflector 8 and the casing 7.
  • the working principle of the sodium lamp is as follows: when the bulb is started, an arc is generated between the electrodes at both ends of the arc tube in the light source tube 6, and the liquid sodium mercury gas in the tube is evaporated into mercury vapor and sodium vapor due to the high temperature of the arc.
  • the electrons emitted by the cathode impinge on the atoms of the discharge material during the movement toward the anode, so that they obtain energy to generate ionization or excitation, and then return to the ground state from the excited state; or change from the ionized state to the excited state, and then return to the ground state infinite loop. At this time, the excess energy is released in the form of light radiation, and light is generated.
  • sodium lamp is the most commonly used road lamp, it still has the following defects: 1. High power consumption and low power efficiency; 2. Low color temperature and poor color rendering; 3. Light source utilization ratio; 4 Long start-up time, can not be started continuously; 5, not environmental protection (including mercury); 6, short service life; 7, complex disassembly, replacement, maintenance is not convenient.
  • the light source lamp used in the sodium lamp is 360-degree light, some light is reflected by the reflector, and a lot of light energy is wasted in the reflection process. Therefore, although the sodium lamp can meet the lighting requirements, it cannot meet the urban road construction process. The issue of saving energy.
  • the color temperature of the LED lamp can be flexibly selected between 1900 and 7000K, and the color rendering index can be as high as 70 or more.
  • the traditional sodium lamp emits yellow light and the color rendering index is low; the lamp structure of the sodium lamp is determined. Its light output rate is low, only about 60%, LED lamps have high light extraction rate, up to 88%-95%; high-pressure sodium lamp bulbs have long startup time, need to have a certain time interval when starting again, LED lights do not have startup delay
  • the problem can be connected at any time and work at any time; the LED is a solid light source without adding any gas. Contains no mercury, lead, no ultraviolet rays, will not cause harm to the human body, and will not pollute the environment (can also be recycled and reused); LED theoretical life is about 100,000 hours and the theoretical life of traditional sodium lamps is only about 6,000 hours.
  • LED street lights have many advantages over sodium lamps, they also have shortcomings. First of all, whether it is a high-power LED street lamp or a high-temperature sodium lamp, due to its structural limitations, it is very inconvenient to replace, especially in the face of a large number of replacement work in urban road construction, this inconvenience will seriously restrict the development of street lamps. How to achieve quick and easy replacement is an urgent problem to be solved.
  • the heat dissipation problem is also very important for its application.
  • the performance life of LED is greatly affected by temperature.
  • the heat dissipation problem is a problem that cannot be ignored.
  • the heat dissipation cannot be solved, and the loss of LED street lamps will be intensified, which will affect its normal use.
  • the present invention provides a novel LED light source module, an LED module assembly, and a graphene heat-dissipating LED lamp.
  • the heat conduction efficiency of the light source is improved by encapsulating a graphene heat-conducting material on the light source of the LED street lamp.
  • the utility model has the advantages of prolonging the service life and further improving the light effect of the LED street lamp, and in the face of the inconvenience of the traditional street lamp disassembly and replacement, the invention can quickly complete the installation by setting the independent module and adopting the quick connector without the disassembly tool.
  • the invention relates to the following:
  • LED light source module which comprises: a solar flower radiator and an LED light source.
  • the light source module according to any one of items 1 to 4, wherein the LED light source module further comprises a lens, a rubber ring, a pressing ring, a back cover, a platform, a screw and a waterproof quick connector.
  • the light source module according to any one of the items 5-8, wherein the lens is fastened to the sealing rubber ring, and the pressing ring is fixed by the screw and the platform, and the lens and the sealing rubber ring are closely attached to the platform. .
  • LED module assembly which includes:
  • the LED light source module and the power module according to any one of items 1 to 9.
  • the number of the LED light source modules is one or two or more.
  • Graphene heat-dissipating LED lamp which comprises:
  • the graphene heat-dissipating LED lamp of item 12 wherein, when the number of the LED light source modules is two or more, the LED light source module is connected to the power module through the waterproof plug.
  • the graphene heat-dissipating LED lamp provided by the invention comprises an LED light source module and a power module, a lamp shell and an optional waterproof plug;
  • the LED light source module is connected to the power module through the waterproof plug to form an LED module assembly.
  • the LED light source module When the light source module is one, the LED light source module and the power module are directly connected to form an LED module assembly.
  • the LED light source module includes a solar heat sink.
  • a block structure formed of a graphene phase change material is filled in the middle of the solar heat sink.
  • the surface of the solar heat sink is coated with a fluororesin material comprising graphene.
  • the LED light source of the LED light source module is connected to the solar heat sink through a thermal grease containing graphene.
  • the LED module assembly is fixed to the LED street lamp head by one or more screws and presser feet.
  • the number of the LED light source modules is several, for example, one, two, three, four, five, six or more.
  • the LED light source module comprises a lens, a rubber ring, a pressure ring, an LED light source, a solar heat radiator, a back cover, a platform, a block structure formed of a graphene phase change material, a screw and a waterproof Quick Connector.
  • the LED light source in the LED light source module, is fixed to the platform of the solar heat sink, and a thermal conductive grease containing graphene is coated between the LED light source and the platform.
  • the solar flower radiator is a hollow heat dissipation structure with multi-tooth radial fins, and the graphene phase change material is poured into a hollow portion of the solar heat radiator, and is solidified after being solidified. Structure.
  • the hollow portion of the solar heat sink is sealed by the platform and the back cover.
  • the lens is fastened to the sealing rubber ring, and the pressing ring is fixed to the solar heat radiator platform by screws, and the lens and the sealing rubber ring are closely attached to the solar heat radiator platform.
  • the waterproof quick connector connects the light source to the waterproof quick connector of the power source through a waterproof through hole reserved in the solar heat sink.
  • the invention provides a novel LED light source module, an LED module assembly, and a graphene heat-dissipating LED lamp.
  • the invention adds several heat-dissipating materials containing graphene to the LED module, thereby improving heat conduction efficiency and prolonging use. life.
  • the LED light source module, the LED module assembly and the graphene heat-dissipating LED lamp of the invention further improve the lighting performance of the LED lamp, and the invention is provided by setting an independent module in the face of the inconvenience of the conventional street lamp disassembly and replacement. Quick connectors allow quick installation without the need for a removal tool.
  • FIG. 1 is an overall schematic view of a prior art high pressure sodium lamp.
  • FIG. 2 is a schematic view of a ballast of a conventional sodium lamp.
  • FIG 3 is a schematic exploded view of the graphene heat-dissipating LED lamp of the present invention.
  • FIG. 4 is a schematic overall view of a light source module of the present invention.
  • Figure 5 is a schematic view of the sodium lamp after modification.
  • the graphene heat-dissipating LED lamp provided by the invention comprises one or more LED light source modules and a power module, a lamp shell and an optional waterproof plug.
  • the LED light source module When the light source module is one, the LED light source module and the power module are connected to form an LED module assembly.
  • the two or more light source modules are connected to the power module through a waterproof plug to form an LED module assembly.
  • the LED module assembly is fixed to the lamp housing by a plurality of screws and pressers.
  • the number of the LED light source modules is preferably 1 to 6.
  • the LED light source module comprises a lens, a rubber ring, a pressure ring, an LED light source, a thermal grease containing graphene, a solar-heated radiator containing a graphene coating, a back cover, a platform, and a block formed of a graphene phase change material. Structure, screws and waterproof quick connectors.
  • the solar flower radiator is a hollow heat dissipation structure with multi-tooth radial fins.
  • the graphene phase change material is poured into the hollow portion of the solar flower radiator, and is cylindrical after being solidified, and the solar flower radiator is hollow. Some will be sealed by the platform and the back cover.
  • the light source is fixed on the platform of the solar heat radiator by screws, and a heat conductive silicone grease composition prepared by using graphene material is applied between the light source and the platform.
  • the heat conductive silicone grease composition will solidify the light source and the sun flower.
  • the platform is tightly connected.
  • the lens is fastened to the sealing rubber ring, and the pressing ring is fixed by the screw and the sun flower radiator platform, and the lens and the sealing rubber ring are closely attached to the sun flower radiator platform.
  • the waterproof quick connector connects the light source to the waterproof quick connector of the power supply through the waterproof through hole reserved in the solar flower radiator.
  • the one or more light source modules are fixed to the light source backing plate by screws with washers and spring
  • the lens is a borosilicate glass lens, and the light transmittance is about 95%, which reduces LED light loss.
  • the light source provided by the invention is a COB light source, and the platform of the light source and the solar heat radiator is connected by a thermal grease containing graphene, so that the temperature difference between the heat sink and the light source is controlled within 2 ° C, thereby greatly improving the heat conduction efficiency of the LED chip.
  • the temperature of the light source chip is maintained within a good range, which reduces the light decay of the LED chip and prolongs the service life of the LED.
  • the heat conductive silicone grease composition containing graphene will solidify into a solid after being bonded, and the property is stable and not easily affected by the external environment, so that the light source chip and the heat sink can be closely connected.
  • the state of the ordinary thermal grease is susceptible to temperature and is free to cause a gap between the chip and the heat dissipation platform to reduce heat dissipation efficiency.
  • the thermal conductivity of the thermal conductive silicone containing graphene is 3.0 W/m ⁇ k or more, and the thermal conductivity of the conventional thermal grease is only about 1.0 W/m ⁇ k, so that the thermal grease containing graphene can be transmitted. Thermal performance increased by more than 1.5 times.
  • the service life of the thermal grease containing graphene is about 10 years, which is much better than that of the traditional thermal grease for about 2 years. Therefore, using the thermal grease containing graphene can better realize the solar light radiator to the light source. Cooling.
  • the use of the graphene-containing thermally conductive silicone material is disclosed in the applicant's prior patent CN201210119361.9, which is hereby incorporated by reference in its entirety herein in its entirety herein in its entirety herein in its entirety herein in its entirety herein in
  • the invention has a graphene phase change nano heat storage material built in the cavity of the solar flower radiator, and the graphene phase change material can also realize the heat storage uniform temperature effect, thereby further improving the heat dissipation efficiency of the heat sink.
  • the graphene phase change nano heat storage material provided by the present invention has been disclosed in the applicant's prior patent CN201310714156.1, and the inner phase change layer used is prepared by using various existing phase change materials, and solid liquid can be used. Phase change materials, liquid gas phase change materials, solid phase change materials, solid gas phase change materials, specific materials can choose organic or inorganic materials.
  • phase change material it is preferable to use a solid-liquid phase change material to store the solid-liquid phase change material inside the phase change layer, and the phase change material has a property of changing the morphology with temperature and providing latent heat.
  • a phase change material changes from a solid to a liquid or from a liquid to a solid, a phase change material will absorb or release a large amount of latent heat, and the disclosure of CN 201310714156.1 is hereby incorporated herein.
  • the phase change material has the ability to change its physical state within a certain temperature range, so that it can maintain a certain temperature for a long time.
  • the phase transition temperature range of the solid-liquid phase change material ranges from 0 to 200 ° C, and the material is preferably paraffin or microcrystal.
  • phase change materials such as body wax, liquid paraffin, polyethylene wax, semi-refined paraffin, and polyethylene glycol 6000.
  • the surface of the solar flower radiator provided by the invention is coated with a fluororesin composite material (also referred to as RLCP graphene fluororesin composite material) containing graphene to enhance infrared radiation and improve heat dissipation efficiency.
  • a fluororesin composite material also referred to as RLCP graphene fluororesin composite material
  • the surface emissivity of ordinary radiators is 0.2.
  • the RLCP graphene fluororesin composite material used is disclosed in the applicant's prior patent CN201310089504.0, which is not described in detail herein, the disclosure of which is incorporated herein by reference.
  • the power module includes a power source and a power supply liner, and the power source and the power supply liner are connected by a screw to form a power module.
  • the LED module provided by the invention adds three different graphene heat conductive materials, so that the heat conduction efficiency of the whole LED is improved, the product performance of the LED module is improved, and the LED lamp is improved by about 30% compared with the conventional LED lamp, and the LED is highly efficient and energy-saving.
  • the light effect is 200% higher than that of traditional sodium lamps.
  • the whole LED lamp provided by the invention can easily reach the IP67 through the use of waterproof quick joints, sealing rings, pressing rings, etc., and can ensure the normal operation of the lamps in various environments.
  • the invention sets the light source and the power source as independent modules respectively, and the quick connection of the LED light source module and the power module is adopted, which is different from the traditional LED lamp, and has many components fixedly connected, and has the advantages of convenient installation and easy maintenance.
  • the solar thermal radiator with high thermal conductivity the heat dissipation efficiency of the entire lamp can be better improved.
  • the graphene heat-dissipating LED lamp provided by the present invention includes two LED light source modules and a power module (wherein the power module includes a driving power source 21 and a power source liner). 20), the lamp housing 9 and the waterproof socket 22, the two LED light source modules are located inside the lamp housing.
  • the light source module is connected to the power module through the waterproof plug 22 to form an LED module assembly.
  • the LED module assembly is fixed to the LED street lamp head by screws and pressers and the lamp housing.
  • the number of the LED light source modules is two.
  • two LED light source modules are fixed inside the lamp housing 9 by the pallet 19.
  • the LED light source module comprises a lens 16, a rubber ring 17, a pressure ring 18, an LED light source 15, a thermal grease containing graphene, a solar heat radiator 13, a back cover 10, a platform 14, a graphene phase change material 23, Screw and waterproof quick connector 12
  • the waterproof quick connector 12 in the LED light source module is connected with the waterproof plug 22, and usually the waterproof quick connector 12 and the same waterproof plug 22 in several light source modules connection.
  • FIG. 3 shows a case where two light source modules are included. It can be understood by those skilled in the art that when the light source module is one, the light source module is directly connected to the power module.
  • the solar flower radiator 13 is a hollow heat dissipation structure with multi-tooth radial fins, and the graphene phase change material 23 is poured into the hollow portion of the solar heat radiator, and is cylindrical after being solidified, and the solar flower radiator The hollow portion of the 13 is sealed by the platform 14 and the back cover 10.
  • the LED light source 15 is fixed on the platform 14 of the solar heat radiator by screws, and a thermal conductive grease prepared by coating the graphene material between the light source and the platform, the heat conductive grease will solidify the light source and the solar heat radiator platform. tight connection.
  • FIG. 4 is an overall schematic view of the LED light source module combined.
  • the graphene phase change material is specifically prepared as follows:
  • the additive composition and the mass ratio thereof are: mass ratio of carbon nanotubes, graphene, particulate matter, fumed silica: 1:10:8:1, and the mass ratio of all additives to the following phase change material is 1 : 4.
  • the purity of the carbon nanotubes is ⁇ 95 wt%, and the ash content is ⁇ 0.2 wt%.
  • the particulate matter was alumina (Al 2 O 3 ) and had an average particle diameter of 10 ⁇ m.
  • the phase change material is paraffin wax and the phase transition temperature is 70 °C.
  • paraffin wax is heated to complete melting, and the carbon nanotubes, graphene and particles having a mass ratio of 1:10:8 are poured into the paraffin melt to be premixed, stirred until uniformly mixed, and the desired quality of the gas phase is slowly added.
  • the silicon oxide is further stirred until it is uniformly mixed, and then cooled to obtain a final phase change material.
  • the thermal grease containing graphene is specifically prepared as follows:
  • the additive composition and its mass are as follows: the mass ratio of carbon nanotubes, graphene, and particulate matter is 1:6:3, and the volume ratio of all additives to silicone oil is 6:4.
  • the purity of the carbon nanotubes is ⁇ 95 wt%, and the ash content is ⁇ 0.2 wt%.
  • the particulate matter is a paraffin-coated phase change capsule, and the material including the paraffin wax is alumina, the phase transition temperature is 29 ° C, and the average particle diameter is 60 ⁇ m.
  • the silicone oil is selected to have a viscosity of 500,000 cSt of a mixture of dimethicone and hydrogen-containing silicone oil at 25 °C.
  • the graphene and the pellets having a mass ratio of 6:3 are poured into a small amount of silicone oil for premixing, and under the condition of mechanical stirring, the carbon nanotubes of the desired quality are slowly added, and the silicone oil is replenished at any time until the desired silicone oil content. After continuing mechanical stirring for half an hour, the mixture was further milled for one hour using a counter roll mill to obtain the final silicone grease.
  • the RLCP graphene fluororesin composite material is specifically prepared as follows:
  • fluorosilicone resin (provided by Shanghai Huiyan New Materials Co., Ltd.), 40% acrylic thinner, 4% electron transfer organic compound polypropylene, 1% graphene, 1% carbon nanotube, 1% titanium dioxide, 3% curing agent epoxy resin is mixed in steps and stirred at room temperature 800-1000 rpm to form the target coating.
  • the RLCP graphene fluororesin composite was applied to the surface of the sun flower radiator by the following method.
  • the target coating is fully stirred and then poured into the spray gun.
  • the pressure of the spray gun is set to 0.4 MPa, and the target surface is 10-20 cm. Pass the coating evenly over the surface of the object.
  • the coating is uniform and lustrous, and its thickness can be optimized according to needs.
  • the coating can be naturally air-dried for 12 hours or baked in an oven for 10 minutes to cure quickly.
  • the light source employed in the following embodiments is a COB light source.
  • Example 1 LED lamp containing graphene thermal grease
  • Comparative sample 160*70mm male mold solar flower radiator, 30W integrated light source, Taiwan Limin silicone grease connection between light source and platform, no cavity interior and heat sink surface treatment.
  • Example 2 LED lamp comprising graphene phase change material
  • Comparative sample Using the above 160*70mm male mold solar flower radiator, the above 30W integrated light source, the above-mentioned Taiwan Limin silica gel connection between the light source and the platform, no cavity interior and heat sink surface treatment.
  • Example 3 LED lamp comprising a coating of fluororesin material of graphene
  • Comparative sample The above 160*70mm male mold solar flower radiator, 90W integrated light source, the above-mentioned Taiwan Limin silicone grease connection between the light source and the platform, no cavity interior and heat sink surface treatment.
  • Example 4 LED lamp comprising three graphene materials composite
  • DRL-III thermal conductivity meter which is used to test the thermal conductivity of materials according to MIL-I-49456A standard.
  • FLIR T420 thermal imaging camera which can produce a clear image without the light source under the dark night, and can measure the temperature in the non-contact mode.
  • Example 2 The detection conditions of the heat transfer performance of the comparative sample and the experimental sample in Example 1 were as follows: for a 30 W integrated LED integrated chip, the temperature was turned on for 40 minutes at room temperature 20 ° C, humidity 45%.
  • the heat flux density dilution effect of the comparative sample and the experimental sample in Example 2 is as follows: testing the average temperature performance of the graphene phase change material, at room temperature 20 ° C, humidity 45%, recording the substrate temperature condition (40 min) .
  • Example 3 The heat radiation exchange effect of the comparative sample and the experimental sample in Example 3 is as follows: for testing the radiation cooling performance of the graphene heat-dissipating coating, at room temperature 20 ° C, humidity 45%, recording the substrate temperature condition at the time of basic stability (40 min) ).
  • Example 5 The heat-dissipating condition of the experimental sample in Example 4 was tested under the conditions of room temperature 20 ° C, humidity 45%, and recording of the chip temperature condition (40 min) which was substantially stable.
  • Example 1 After 40 minutes of steady state, the experimental sample of Example 1 had a chip temperature of 34.7 ° C and a heat sink temperature of 34.8 ° C, while the comparative sample of Example 1 had a chip temperature of 36.8 ° C and a heat sink temperature of 36.8 ° C. It can be seen that compared with Limin's silicone grease, the thermal grease containing graphene in the same period reduces the chip temperature by 2 °C, which is basically consistent with the data obtained by the thermal conductivity measurement method.
  • Example 2 Further, the experimental sample and the comparative sample of Example 2 were tested according to the above test conditions. After 40 minutes of steady state, the chip temperature of the comparative sample was 41 ° C, the temperature difference of the chip fin was 3 ° C, and the chip temperature of the experimental sample was only 38. °C, and the chip fins have no temperature difference.
  • the experimental sample and the comparative sample of Example 3 were tested according to the above test conditions, and the temperature rise of the chip in the solar heat dissipation system of the experimental sample of Example 3 was significantly slower than that of the comparative sample, and the experimental sample and the comparative sample were phased. Ratio, the final temperature is reduced by 7 ° C, indicating that the system has a strong heat dissipation capability after spraying the material of the invention; and the surface temperature of the heat sink of the experimental sample is about 3 ° C higher than the surface temperature of the unsprayed heat sink; from the chip and the heat sink It can be seen from the temperature difference that the temperature difference of the experimental sample is about 1 °C, and the temperature difference of the comparative sample is up to 10.6 °C. It is indicated that the solar heat dissipation system of the fluororesin material containing graphene of the present invention has better heat radiation capability and lowers the temperature of the LED chip.
  • Example 4 Further, the sample of Example 4 was tested, and the temperature rise of the substrate of the integrated light source of 90 W after steady state was only 31.6 ° C, and the temperature difference between the substrate temperature and the lowest temperature of the heat sink was in the range of 1 ° C, and the temperature uniformity was excellent.
  • the surface of the solar flower heat sink in this embodiment is coated with RLCP graphene fluororesin composite material, thereby enhancing infrared radiation, and the experimental results show that the coating has significantly improved heat dissipation efficiency.
  • the surface radiation coefficient of the ordinary radiator is 0.2, and the radiation coefficient is increased to 0.7 after the addition of the graphene coating, and the external radiation and heat storage are greatly enhanced.
  • a graphene phase change nano-heat storage material is built in the cavity of the solar flower radiator, and according to experimental results, the heat dissipation efficiency of the heat sink can be further improved by using the phase change material, and the heat sink volume is made under the same heat dissipation condition. Zoom out to make the LED module lighter and easier to install.
  • the light source module provided by the invention adds three kinds of graphene heat conductive materials through packaging, so that the heat conduction efficiency of the whole LED is improved, and the light effect is improved by 200% compared with the conventional sodium lamp, and is increased by about 30% compared with the conventional LED lamp.

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Abstract

一种石墨烯散热LED灯，包括LED光源模组、电源模组、灯壳（9）和防水排插（22）。LED光源模组通过排插（22）与电源模组相连接形成LED模组总成。LED模组中加入石墨烯导热材料，使得导热效率提高，延长了使用寿命，同时，进一步提高了LED灯的照明性能。该LED灯通过设置独立模组，采用快速接头，无需拆卸工具，就可以快捷的完成安装。

Description

石墨烯散热LED灯 技术领域
本发明属于照明技术领域，具体涉及一种新型的石墨烯散热LED灯。
背景技术
在城市化建设过程中，道路用灯是非常重要的一个建设环节。有资料显示，目前照明领域的消耗约占国家电力消耗的20％，我国每年用于照明的电力接近2500亿度，这其中很大一部分是由于城市道路用灯的电力消耗。降低道路照明用电是城市建设能源节约的一个重要的环节。
目前城市道路上最常使用的照明灯具为钠灯。用做路灯的钠灯，在夜间可产生良好的路面能见度。这种桔黄色的灯光，在雾天的透射力强而且柔和，在这种灯光下的物体，可以看得很清楚。所以不少交通要道和人工照明上，都使用钠气灯来减少汽车的交通事故。
钠灯的结构如图1所示，其由外壳1、支架2、镇流器3、灯头支架4、灯头5、光源灯管6、外罩7和反光罩8组成。外壳1分为上壳体和下壳体，上下壳体形成空心外壳1，反光罩8通过螺丝固定安装在下壳体上，位于外壳1内侧，在反光罩8的尾部设有圆形口，供光源灯管6穿过，外罩7对应反光罩8通过螺丝和压脚固定安装在下壳体上，位于外壳1的外侧。
镇流器3如图2所示，通过螺丝固定安装在支架2上，灯头支架4外接在支架2上，灯头5安装在灯头支架4上，并且与光源灯管6相连接。支架2通过螺丝固定在外壳1的下壳体上，灯头支架4、灯头5和光源灯管6穿过反光罩8尾部的圆形口，位于反光罩8和外罩7形成的封闭空间内。
钠灯的工作原理如下：当灯泡启动后，光源灯管6中的电弧管两端电极之间产生电弧，由于电弧的高温作用使灯管内的液钠汞气受热蒸发成为汞蒸气和钠蒸气，阴极发射的电子在向阳极运动过程中，撞击放电物质的原子，使其获得能量产生电离或激发，然后由激发态回复到基态；或由电离态变为激发态，再回到基 态无限循环，此时，多余的能量以光辐射的形式释放，便产生了光。
虽然钠灯是目前最常用的道路用灯，但是其还存在以下诸多缺陷：1、功耗较高，电源效率低；2、色温较低，显色性较差；3、光源利用率较；4、启动时间较长，不可连续启动；5、不环保(含汞)；6、使用寿命较短；7、拆卸复杂，更换、维修不便利。
由于钠灯所采用的光源灯管是360度发光，通过设置反光罩对部分光进行反射，反射过程中会导致很多光能浪费，因此采用钠灯虽然能达到照明要求，但是却不能满足城市道路建设过程中节约能源的问题。
随着近年来我国创建资源节约型、环境友好型社会，“绿色照明”的概念也在逐步深入人心。随着科技的不断进步，半导体材料应用技术的高速发展，小功率LED光源已广泛应用于的景观照明，大功率的LED路灯也越来越多的引起各方面的关注。
相对传统钠灯可节能约55％；LED灯具色温可以在1900-7000K之间灵活选择，显色指数可高达70以上，而传统钠灯发光颜色为黄光且显色指数较低；钠灯的灯泡结构决定了其出光率低，仅为60％左右，LED灯具出光率高，可达88％-95％；高压钠灯灯泡启动时间长，再次启动时需要有一定的时间间隔，LED灯不存在启动延时问题，可随时接通，随时工作；LED是固体光源，不添加任何气体。不含汞、铅，无紫外线，不会对人体造成伤害，也不会污染环境(还可以回收再利用)；LED理论寿命10万小时左右而传统钠灯理论寿命仅为6千小时左右。
虽然LED路灯相对于钠灯具有诸多优势，但是也存在不足。首先，不论是大功率LED路灯还是高温钠灯，由于其结构上的限制，更换起来非常的不便，尤其面对城市道路建设中大量更换工作，这种不便会严重制约着路灯建设发展。如何实现快速便捷的更换是一个亟待解决的问题。
另一方面，对于大功率LED路灯，散热问题也是影响其应用的一个非常重要的。LED的性能寿命受温度影响非常大，散热问题就是一个不可忽视的问题，无法解决好散热，LED路灯的损耗也会加剧，影响其正常使用。
发明内容
为克服上述技术问题，本发明提供一种新型的LED光源模组、LED模组总成、以及石墨烯散热LED灯，通过在LED路灯的光源上封装加入石墨烯导热材料，使光源导热效率提高，延长使用寿命，同时，进一步提高了LED路灯的光效，而面对传统路灯拆卸更换不便，本发明通过设置独立模组，采用快速接头，无需拆卸工具，就可以快捷的完成安装。
具体来说，本发明涉及如下内容：
1、LED光源模组，其包括：太阳花散热器和LED光源。
2、根据项1所述的光源模组，其中，在所述太阳花散热器的中间填充有石墨烯相变材料形成的块状结构。
3、根据项1或2所述的光源模组，其中，在所述太阳花散热器的表面涂覆有包含石墨烯的氟树脂材料。
4、根据项1～3中任一项所述的光源模组，其中，所述LED光源通过包含石墨烯的导热硅脂与所述太阳花散热器连接。
5、根据项1～4中任一项所述的光源模组，其中，所述LED光源模组还包括透镜、胶圈、压圈、后盖、平台、螺丝和防水快速接头。
6、根据项5所述的光源模组，其中，LED光源固定于平台，并且在LED光源与平台中间涂覆有包含石墨烯的导热硅脂。
7.根据项1～5中任一项所述的光源模组，其中，通过将石墨烯相变材料灌注入太阳花散热器的中空部分，待其凝固后呈块状结构。
8、根据项7所述的光源模组，其中，太阳花散热器的中空部分会通过平台和后盖封住。
9、根据项5～8中任一项所述的光源模组，其中，所述透镜与密封胶圈扣合，压圈通过螺丝与平台固定，将透镜和密封胶圈紧密贴合在平台上。
10、LED模组总成，其包括：
项1～9中任一项所述的LED光源模组和电源模组。
11、根据项10所述的LED模组总成，其中，
所述LED光源模组数量为1个或2个以上。
12、石墨烯散热LED灯，其包括：
项10或11所述的LED模组总成和灯壳。
13、根据项12所述的石墨烯散热LED灯，其中，所述LED光源模组数量 为2个以上时，所述LED光源模组通过防水排插与电源模组相连接。
14、根据项12或13所述的石墨烯散热LED灯，其中，所述LED模组总成通过螺丝和压脚与灯壳相固定组成LED路灯灯头。
本发明提供的石墨烯散热LED灯，其包括LED光源模组和电源模组、灯壳和任选的防水排插；
当所述LED光源模组的数量为2个以上时，所述LED光源模组通过防水排插，与电源模组相连接形成LED模组总成。
当光源模组为1个时，LED光源模组和电源模组直接连接形成LED模组总成。
在一个具体的实施方案中，所述LED光源模组包括太阳花散热器。
在一个具体的实施方案中，在所述太阳花散热器的中间填充有石墨烯相变材料形成的块状结构。
在一个具体的实施方案中，在所述太阳花散热器的表面涂覆有包含石墨烯的氟树脂材料。
在一个具体的实施方案中，在所述LED光源模组中，LED光源模组的LED光源通过包含石墨烯的导热硅脂与太阳花散热器连接。
在一个具体的实施方案中，所述LED模组总成通过1个或2个以上的螺丝和压脚与灯壳相固定组成LED路灯灯头。
在一个具体的实施方案中，所述LED光源模组数量为若干个，例如为1个，2个，3个，4个，5个，6个或以上。
在一个具体的实施方案中，所述LED光源模组包括透镜、胶圈、压圈、LED光源、太阳花散热器、后盖、平台、石墨烯相变材料形成的块状结构、螺丝和防水快速接头。
在一个具体的实施方案中，在所述LED光源模组中，LED光源固定于太阳花散热器的平台，并且在LED光源与平台中间涂覆有包含石墨烯的导热硅脂。
在一个具体的实施方案中，所述太阳花散热器是一个中空的带多齿辐射状翅片的散热结构，石墨烯相变材料灌注入太阳花散热器的中空部分，待其凝固后呈块状结构。
在一个具体的实施方案中，太阳花散热器的中空部分会通过平台和后盖封住。
在一个具体的实施方案中，所述透镜与密封胶圈扣合，压圈通过螺丝与太阳 花散热器平台固定，将透镜和密封胶圈紧密贴合在太阳花散热器平台上。
在一个具体的实施方案中，防水快速接头通过太阳花散热器中预留有的防水通孔将光源与电源的防水快速接头连接。
有益的技术效果
本发明提供一种新型的LED光源模组、LED模组总成、以及石墨烯散热LED灯，本发明在LED模组中加入了数种包含石墨烯的散热材料，使导热效率提高，延长使用寿命。同时，本发明的的LED光源模组、LED模组总成、以及石墨烯散热LED灯进一步提高了LED灯的照明性能，而面对传统路灯拆卸更换不便，本发明通过设置独立模组，采用快速接头，无需拆卸工具，就可以快捷的完成安装。
附图说明
图1为现有技术的高压钠灯的整体示意图。
图2为传统钠灯的镇流器的示意图。
图3是本发明石墨烯散热LED灯的整体分解示意图。
图4为本发明的光源模组整体示意图。
图5为钠灯改造后的示意图。
具体实施方式
本发明提供的石墨烯散热LED灯包括1个或2个以上的LED光源模组和电源模组、灯壳和任选的防水排插。
当光源模组为1个时，LED光源模组和电源模组相连接形成LED模组总成。
所述2个以上的光源模组通过防水排插，与电源模组相连接形成LED模组总成。
所述LED模组总成通过若干个螺丝和压脚与灯壳相固定组成LED路灯灯头。
所述LED光源模组数量优选为1～6个。
所述LED光源模组包括透镜、胶圈、压圈、LED光源、包含石墨烯的导热硅脂、含石墨烯涂层的太阳花散热器、后盖、平台、石墨烯相变材料形成的块状结构、螺丝和防水快速接头。
所述太阳花散热器是一个中空的带多齿辐射状翅片的散热结构，石墨烯相变材料灌注入太阳花散热器的中空部分，待其凝固后呈圆柱形，太阳花散热器的中空部分会通过平台和后盖封住。光源通过螺丝固定在太阳花散热器的平台上，在光源与平台中间会涂抹上包含石墨烯材料制备而成的导热硅脂组合物，此导热硅脂组合物凝固后将使光源与太阳花散热器平台紧密连接。透镜与密封胶圈扣合，压圈通过螺丝与太阳花散热器平台固定，将透镜和密封胶圈紧密贴合在太阳花散热器平台上。防水快速接头通过太阳花散热器中预留有的防水通孔将光源与电源的防水快速接头连接。所述1个或2个以上光源模组通过带垫片和弹垫的螺丝与光源衬板相固定。
所述透镜为高硼硅玻璃透镜，透光率达到95％左右，减少LED光损。
本发明提供的光源为COB光源，光源与太阳花散热器的平台通过包含石墨烯的导热硅脂连接，使散热器与光源之间的温差控制在2℃以内，极大提高LED芯片的热传导效率，使光源芯片温度得以保持在一个良好的范围内，减小了LED芯片的光衰，延长了LED的使用寿命。
包含石墨烯的导热硅脂组合物贴合后会凝固为固体，性质稳定不易受外界环境影响，可使光源芯片与散热器紧密连接。而另一方面，普通的导热硅脂的状态易受温度影响而产生游离从而导致芯片与散热平台产生缝隙降低散热效率。通常，包含石墨烯的导热硅脂散热系数为3.0W/m·k以上，而传统的导热硅脂散热系数仅为1.0W/m·k左右，这样采用包含石墨烯的导热硅脂可以将传热性能提升1.5倍以上。包含石墨烯的导热硅脂的使用寿命为10年左右，这也大大优于传统导热硅脂的2年左右，因此，采用包含石墨烯的导热硅脂可以更好的实现太阳花散热器对光源的散热。所采用的包含石墨烯的导热硅脂材料在申请人之前的专利CN201210119361.9已经公开，在此不再详述，并在此将CN201210119361.9所公开的内容援引到此。
本发明在太阳花散热器空腔中内置石墨烯相变纳米储热材料，石墨烯相变材料也可以实现储热均温的作用，进一步提升了散热器的散热效率。本发明提供的石墨烯相变纳米储热材料在申请人之前的专利CN201310714156.1已经公开，其所采用的内层相变层采用各种现有的相变材料制备而成，可以采用固液相变材料、液气相变材料、固固相变材料者固气相变材料，具体材料可以选择有机物或者无机物。优选采用固液相变材料，将固液相变材料储存在变相层内部即可实现，相 变材料具有能随温度变化而改变形态并能提供潜热的特性。在相变材料由固态变为液态或由液态变为固态的过程称为相变过程中，相变材料将吸收或释放大量的潜热，在此将CN201310714156.1所公开的内容援引到此。相变材料具有在一定温度范围内改变其物理状态的能力，使得其能够较长时间的保持一定的温度，所述固液相变材料相变温度范围0～200℃，材料优选石蜡、微晶体蜡、液体石蜡、聚乙烯蜡、半精炼石蜡、聚乙二醇6000等相变材料中的一种或多种。
本发明提供的太阳花散热器表面由包含石墨烯的氟树脂复合材料(也可以称为RLCP石墨烯氟树脂复合材料)涂层，增强红外辐射，提升散热效率。普通散热器表面辐射系数为0.2，加入RLCP石墨烯氟树脂复合材料涂层后辐射系数增加至0.7，对外辐射和存热大大增强。所采用的RLCP石墨烯氟树脂复合材料在申请人之前的专利CN201310089504.0已经公开，在此不再详述，在此将CN201310089504.0所公开的内容援引到此。
所述电源模组包括电源、电源衬板，电源和电源衬板通过螺丝连接组成电源模组。
本发明提供的LED模组加入了三种不同的石墨烯导热材料，使整个LED的导热效率提高，提高了LED模组的产品性能，相比传统LED灯提高30％左右，并结合LED高效节能的特点，光效相比传统钠灯提高200％，
本发明提供的整个LED灯通过防水快速接头，密封圈、压圈等的使用使防护等级易达到IP67，可保证灯具在各种不同环境下正常工作。本发明通过将光源和电源分别设置成独立模组，LED光源模组与电源模组之间采用快速接头连接，不同于传统的LED灯将诸多部件固定连接，具有方便安装，易于维护的优势。此外，通过使用高导热效率的太阳花散热器可以更好的提高整个灯的散热效率。
以下采用实施例和附图来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。
如图3和图5所示，本发明提供的石墨烯散热LED灯，该石墨烯散热LED灯包括2个LED光源模组和电源模组(其中，电源模组包括驱动电源21和电源衬板20)、灯壳9和防水排插22，2个LED光源模组位于灯壳内部。所述光源模组通过防水排插22，与电源模组相连接形成LED模组总成。所述LED模组总成通过螺丝和压脚与灯壳相固定组成LED路灯灯头。如图5所示，所述LED光源模组数量为2个。此外，如图3中所示，2个LED光源模组通过托板19被固定在 灯壳9内部。
所述LED光源模组包括透镜16、胶圈17、压圈18、LED光源15、包含石墨烯的导热硅脂、太阳花散热器13、后盖10、平台14、石墨烯相变材料23、螺丝和防水快速接头12。
在安装本发明提供的石墨烯散热LED灯时，LED光源模组中的防水快速接头12与防水排插22连接，并且通常几个光源模组中的防水快速接头12与同一个防水排插22连接。
图3中示出了包括2个光源模组的情况，本领域人员可以理解，当光源模组为1个时，光源模组直接与电源模组连接。
所述太阳花散热器13是一个中空的带多齿辐射状翅片的散热结构，石墨烯相变材料23灌注入太阳花散热器的中空部分，待其凝固后呈圆柱形，太阳花散热器13的中空部分会通过平台14和后盖10封住。LED光源15通过螺丝固定在太阳花散热器的平台14上，在光源与平台中间会涂抹上石墨烯材料制备而成的导热硅脂，此导热硅脂凝固后将使光源与太阳花散热器平台紧密连接。透镜16与密封胶圈17扣合，压圈18通过螺丝与太阳花散热器13平台固定，将透镜16和密封胶圈17紧密贴合在太阳花散热器平台14上。防水快速接头12通过太阳花散热器13中预留有的防水通孔将光源与电源的防水排插22连接。所述若干个光源模组通过带垫片和弹垫的螺丝与光源衬板相固定。图4为LED光源模组组合后的整体示意图。
实施例
在下述实施例中采用的物质如下所述，在实施例中使用的各物质均为可以商购的物质。
石墨烯相变材料具体制备为：
采用的添加物成分及其质量比为：碳纳米管、石墨烯、颗粒物、气相二氧化硅的质量比为1∶10∶8∶1，全部添加物与下述相变材料的质量比为1∶4。
碳纳米管的纯度≥95wt％，灰分≤0.2wt％。
颗粒物为氧化铝(Al 2O 3)，平均粒径为10um。
相变材料为石蜡，相变温度为70℃。
将石蜡加热至完全融化，再将质量比为1∶10∶8的碳纳米管、石墨烯与颗 粒物倒入石蜡熔融液中进行预混，搅拌至混合均匀后，缓慢加入所需质量的气相二氧化硅，继续搅拌至混合均匀后，冷却即可得最终的相变材料。
包含石墨烯的导热硅脂具体制备为：
采用的添加物成分及其质量比如下：碳纳米管、石墨烯、颗粒物的质量比为1∶6∶3，全部添加物与硅油的体积比为6∶4。
碳纳米管的纯度≥95wt％，灰分≤0.2wt％。
颗粒物为包裹石蜡的相变胶囊，包括石蜡的材料为氧化铝，相变温度为29℃，平均粒径为60um。
所述的硅油选择粘度在25℃时为500000cSt的二甲基硅油和含氢硅油的混合物。
制备方法
将质量比为6∶3的石墨烯与颗粒物倒入少量硅油中进行预混，在机械搅拌的条件下，缓慢加入所需质量的碳纳米管，同时随时补充硅油直至所需硅油含量。继续机械搅拌半小时后，用对辊研磨机对混合物继续研磨一小时，即得最终硅脂。
RLCP石墨烯氟树脂复合材料具体制备为：
质量百分比50％的氟硅树脂(上海荟研新材料有限公司提供)、40％的丙烯酸稀释剂、4％的电子转移型有机化合物聚丙烯、1％的石墨烯、1％的碳纳米管、1％的钛白粉、3％的固化剂环氧树脂按步骤混合后在常温800-1000转/分钟条件下搅拌均匀形成目标涂料。
在下述实施例中RLCP石墨烯氟树脂复合材料通过如下方法涂敷在太阳花散热器的表面。
给需要喷涂散热器表面做去油、去污清洁处理，将目标涂料充分搅拌后倒入喷枪，喷枪压力设置为0.4MPa，对准目标表面，两者距离为10-20cm，来回喷涂2-3遍，使涂料均匀覆盖物体表面。涂层均匀、亮泽，其厚度可以根据需要优化选择，涂层可以自然风干固化12小时或者置于烘箱内烘烤10分钟快速固化。
在下述实施例中的采用的光源为COB光源。
实施例1包含石墨烯的导热硅脂的LED灯
对比样品：采用160*70mm公模太阳花散热器，30W集成光源，光源和平台之间采用台湾利民硅脂连接，无空腔内部及散热片表面处理。
实验样品：采用与对比样品相同的160*70mm公模太阳花散热器，采用与对比样品相同的30W集成光源，光源和平台之间采用上述包含石墨烯的导热硅脂连接，无空腔内部及散热片表面处理。
实施例2包含石墨烯相变材料的LED灯
对比样品：采用上述160*70mm公模太阳花散热器，上述30W集成光源，光源和平台之间采用上述台湾利民硅胶连接，无空腔内部及散热片表面处理。
实验样品：采用上述160*70mm公模太阳花散热器，上述30W集成光源，光源和平台之间采用台湾利民硅脂连接，无散热片表面处理，太阳花空腔内部采用上述石墨烯相变材料填充。
实施例3包含石墨烯的氟树脂材料的涂层的LED灯
对比样品：采用上述160*70mm公模太阳花散热器，90W集成光源，光源和平台之间采用上述台湾利民硅脂连接，无空腔内部及散热片表面处理。
实验样品：采用上述160*70mm公模太阳花散热器，上述90W集成光源，光源和平台之间采用台湾利民硅脂连接，无空腔内部处理，散热器表面喷涂有100μm的上述RLCP石墨烯氟树脂复合材料。
实施例4包含三种石墨烯材料复合的LED灯
实验样品：采用上述160*70mm公模太阳花散热器，采用上述90W集成光源，光源和平台之间采用了上述包含石墨烯的导热硅脂连接，太阳花空腔内部填充了上述石墨烯相变材料并使其凝固，散热器表面喷涂有100μm的上述石墨烯散热涂层。
针对实施例1～实施例4中的实验样品和对比样品进行了下述检测。
检测中采用的实验仪器如下所述
1)DRL-III导热系数仪，采用该仪器依据MIL-I-49456A标准检测材料的热导率。
2)AT4532高精度多路温度测试仪，采用该仪器对多点温度同时实时监控。
3)FLIR T420红外热像仪，该仪器在漆黑夜幕下无需光源产生清晰的图像，还能够在非接触模式下测量温度。
测试方法
1)包含石墨烯的导热硅脂的传热性能直接测试对比，采用GB10297-88非金属团体材料导热系数的测定方法-热线法)。
2)实施例1中对比样品和实验样品的传热性能的检测条件为：针对30W集成LED集成芯片，在室温20℃，湿度45％，打开灯源40min的时间。
3)实施例2中对比样品和实验样品的热流密度稀释效果测试条件为：测试石墨烯相变材料的均温性能，在室温20℃，湿度45％，记录基本稳定时芯片温度情况(40min)。
4)实施例3中对比样品和实验样品的热辐射交换效果检测条件为：为测试石墨烯散热涂层的辐射降温性能，在室温20℃，湿度45％，记录基本稳定时芯片温度情况(40min)。
5)实施例4中的实验样品的散热情况检测的条件为：在室温20℃，湿度45％，记录基本稳定时芯片温度情况(40min)。
检测结果汇总如下：
采用GB10297-88方法对实施例中采用的包含石墨烯的导热硅脂和利民硅胶的性能进行比较。
  包含石墨烯的导热硅脂 利民硅胶
外观 巧克力色 灰色
密度(g/cm 3) 3.2 2.8
挥发率(％) 无 0.9
导热系数(w/mk) 4.2391 3.9212
接触热阻(m 2k/w) 0.000012 0.000024
40min稳态后，使用实施例1的实验样品的芯片温度为34.7℃，散热片温度为34.8℃，而实施例1的对比样品的芯片温度为36.8℃，散热片温度为36.8℃。可见与利民硅脂相比，同等时间内包含石墨烯的导热硅脂使芯片温度下降了2℃，这 与导热系数测定法得到的数据基本一致。
进一步，针对实施例2的实验样品和对比样品按照上述试验条件进行检测，40min稳态后，对比样品的芯片温度为41℃，芯片翅片温差为3℃，而实验样品的芯片温度仅为38℃，且芯片翅片无温差。
进一步，针对实施例3的实验样品和对比样品按照上述试验条件进行检测，实施例3的实验样品的太阳花散热系统中芯片温升明显比对比样品的芯片温升缓慢，实验样品与对比样品相比，最终温度降低达7℃，说明喷涂了本发明的材料后系统散热能力较强；而实验样品的散热片表面温度比未喷涂的散热片表面温度高出约3℃；从芯片与散热片温差可以看出，实验样品的温差值均在1℃左右，而对比样品的温差最大达到10.6℃。说明喷涂本发明的包含石墨烯的氟树脂材料的太阳花散热系统具有更好的热辐射能力，降低了LED芯片温度。
进一步，对实施例4的样品进行检测，在稳态后90W集成光源的基板温升仅为31.6℃，基板温度与散热器温度最低点温差在1℃范围内，均温性表现优异。
本实施例中的太阳花散热器表面由RLCP石墨烯氟树脂复合材料涂覆，从而可以增强红外辐射，实验结果显示采用了该涂层明显提升了散热效率。普通散热器表面辐射系数为0.2，加入石墨烯涂层后辐射系数增加至0.7，对外辐射和存热大大增强。
本实施例在太阳花散热器空腔内置石墨烯相变纳米储热材料，根据实验结果显示采用该相变材料能够进一步提升了散热器的散热效率，并且在相同的散热条件下使散热器体积缩小，使LED模组更为轻便易安装。
本发明提供的光源模块通过封装加入三种石墨烯导热材料，使整个LED的导热效率提高，光效相比传统钠灯提高200％，相比传统LED灯提高30％左右。
所有上述的首要实施这一知识产权，并没有设定限制其他形式的实施这种新产品和/或新方法。本领域技术人员将利用这一重要信息，上述内容修改，以实现类似的执行情况。但是，所有修改或改造基于本发明新产品属于保留的权利。
以上所述，仅是本发明的较佳实施例而已，并非是对本发明作其它形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例。但是凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型，仍属于本发明技术方案的保护范围。

Claims (14)

  1. LED光源模组，其包括：太阳花散热器和LED光源。
  2. 根据权利要求1所述的光源模组，其中，在所述太阳花散热器的中间填充有石墨烯相变材料形成的块状结构。
  3. 根据权利要求1或2所述的光源模组，其中，在所述太阳花散热器的表面涂覆有包含石墨烯的氟树脂材料。
  4. 根据权利要求1～3中任一项所述的光源模组，其中，所述LED光源通过包含石墨烯的导热硅脂与所述太阳花散热器连接。
  5. 根据权利要求1～4中任一项所述的光源模组，其中，所述LED光源模组还包括透镜、胶圈、压圈、后盖、平台、螺丝和防水快速接头。
  6. 根据权利要求5所述的光源模组，其中，LED光源固定于平台，并且在LED光源与平台中间涂覆有包含石墨烯的导热硅脂。
  7. 根据权利要求1～5中任一项所述的光源模组，其中，通过将石墨烯相变材料灌注入太阳花散热器的中空部分，待其凝固后呈块状结构。
  8. 根据权利要求7所述的光源模组，其中，太阳花散热器的中空部分会通过平台和后盖封住。
  9. 根据权利要求5～8中任一项所述的光源模组，其中，所述透镜与密封胶圈扣合，压圈通过螺丝与平台固定，将透镜和密封胶圈紧密贴合在平台上。
  10. LED模组总成，其包括：
    权利要求1～9中任一项所述的LED光源模组和电源模组。
  11. 根据权利要求10所述的LED模组总成，其中，
    所述LED光源模组数量为1个或2个以上。
  12. 石墨烯散热LED灯，其包括：
    权利要求10或11所述的LED模组总成和灯壳。
  13. 根据权利要求12所述的石墨烯散热LED灯，其中，所述LED光源模组数量为2个以上时，所述LED光源模组通过防水排插与电源模组相连接。
  14. 根据权利要求12或13所述的石墨烯散热LED灯，其中，所述LED模组总成通过螺丝和压脚与灯壳相固定组成LED路灯灯头。
PCT/CN2017/118682 2017-05-10 2017-12-26 石墨烯散热led灯 Ceased WO2018205634A1 (zh)

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CA3062912A CA3062912C (en) 2017-05-10 2017-12-26 Led lamp with graphene radiator
KR1020197033433A KR20190133784A (ko) 2017-05-10 2017-12-26 그래핀 방열 led 램프
EP17909235.8A EP3640536B1 (en) 2017-05-10 2017-12-26 Graphene heat-dissipation led lamp
US16/612,394 US11193633B2 (en) 2017-05-10 2017-12-26 LED lamp with graphene radiator
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US11193633B2 (en) 2021-12-07
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