CN106931382A - A kind of heat dissipation element for LED car lamp and preparation method thereof - Google Patents
A kind of heat dissipation element for LED car lamp and preparation method thereof Download PDFInfo
- Publication number
- CN106931382A CN106931382A CN201710195301.8A CN201710195301A CN106931382A CN 106931382 A CN106931382 A CN 106931382A CN 201710195301 A CN201710195301 A CN 201710195301A CN 106931382 A CN106931382 A CN 106931382A
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- China
- Prior art keywords
- heat dissipation
- phase
- silk screen
- change material
- metal knitted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- 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
- F21V29/89—Metals
-
- 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
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Abstract
The present invention discloses a kind of heat dissipation element for LED car lamp and preparation method thereof.The heat dissipation element includes heat dissipation base（1）, metal knitted silk screen（2）, phase-change material（3）With high heat conductive insulating coating（4）.The preparation method comprises the following steps：（1）Metal knitted silk screen adjusts expansion shape according to car light inner chamber, is immersed in phase-change material, phase-change material is filled the gap of metal knitted silk screen, obtains having the metal knitted silk screen of figurate composite phase-change material；（2）Metal knitted silk screen is welded on heat dissipation base, in heat dissipation base and metal knitted silk net surface spraying high heat conductive insulating coating, the integral heat dissipation element for LED car lamp is obtained.The present invention has stronger space adaptability, and metal knitted silk screen and phase-change material are used in combination as into LED car lamp heat dissipation element, can lift the heat transfer thermal storage performance of LED car lamp, improves the stability of a system.
Description
Technical field
The present invention relates to radiator manufacturing technology field, more particularly to a kind of heat dissipation element and its system for LED car lamp
Preparation Method.
Background technology
LED has environmental protection, efficient energy-saving, operating voltage low（3V or so）, safety, long lifespan（It is small up to 100,000
When）, rich color, small volume, fast response time, vibration resistance, the remarkable advantage such as easy care.Due to the plurality of advantages of LED light source,
LED car lamp is favored by increasing automobile vendor.But LED heat flow density is larger, the heat pipe of automobile front
Reason has particularity, it is necessary to consider the factors such as the environment temperature of car light steric requirements and car light inner chamber.Automobile front
Cavity volume is smaller, and traditional heat sinks form is relatively fixed, it is difficult to meet cooling requirements under narrow steric requirements.
Metal knitted silk screen is usually used in high-voltage electric power system, with high conductivity, high heat conductance and flexibility characteristics.Metal is compiled
Woven screen has stronger space adaptability, and expansion shape can be adjusted in the confined space, and thermolysis is played in car light inner chamber.
Metal knitted silk screen and phase-change material are used in combination as LED car lamp heat dissipation element, the heat transfer heat accumulation of LED car lamp can be lifted
Can, improve the stability of a system.
The content of the invention
It is an object of the invention to provide a kind of heat dissipation element for LED car lamp and preparation method thereof, LED car lamp is lifted
Heat-sinking capability, while solving heat dissipation problem of the LED car lamp in the confined space.
The present invention is achieved through the following technical solutions.
A kind of heat dissipation element for LED car lamp, including heat dissipation base, metal knitted silk screen, phase-change material and high heat conduction
Insulating coating；The surface of the heat dissipation base is provided with fin；The bottom of the heat dissipation base is provided with mounting groove；The mounting groove
Interior welding metal weaves silk screen；The phase-change material is filled in the gap of metal knitted silk screen；The heat dissipation base and metal are compiled
The surface of woven screen is coated with high heat conductive insulating coating.
Further, the metal knitted silk screen is formed using metal wire braiding, the metal knitted silk screen cross-sectional width
It is 10mm ~ 50mm.
Further, the material of the metal wire is high thermal conductivity metal, including red copper or aluminium, the section of metal wire are straight
Footpath is 0.1mm ~ 0.4mm.
Further, the principal component of the phase-change material includes neopentyl glycol（NPG）, pentaerythrite（PE）, trihydroxy methyl
Methylamine (TAM) and trimethylolethane (PG) are in one or more of interior solid-solid phase transition material.
Further, the phase transition temperature of the phase-change material is at 30 DEG C ~ 70 DEG C.
Further, the material of the heat dissipation base is aluminium alloy.
Further, the material of the high heat conductive insulating coating is boron nitride silicones.
Further, the thickness of the high heat conductive insulating coating is 0.3 ~ 1mm.
The method for preparing a kind of heat dissipation element for LED car lamp described above, comprises the following steps：
（1）The metal knitted silk screen that fin will be provided with adjusts expansion shape according to car light inner chamber, and phase-change material is heated to solid liquid phase
More than height, metal knitted silk screen is immersed in liquid state phase change material under vacuum, phase-change material is filled metal and compile
The gap of woven screen；
（2）After submergence is finished, the metal knitted silk screen that will be filled with phase-change material takes out, and is cooled to below phase transformation temperature pointses, makes
Phase-change material solidifies, and obtains having the metal knitted silk screen of figurate composite phase-change material；
（3）The metal knitted silk screen that will be filled with phase-change material is welded in the mounting groove of heat dissipation base, in heat dissipation base and gold
Category braided wires net surface spraying high heat conductive insulating coating, obtains the heat dissipation element for LED car lamp.
Further, step（1）In, the time of the submergence is 10min ~ 20min.
Compared with prior art, the present invention has the advantage that and effect：
Metal knitted silk screen and phase-change material are used in combination as LED car lamp heat dissipation element by the present invention, using metal knitted silk
Good flexibility and thermal conductivity that net has itself, in combination with the heat accumulation characteristic of phase-change material, realize the heat of LED chip is fast
Speed transmission, reaches the purpose of high efficiency and heat radiation.
Brief description of the drawings
Fig. 1 is that the heat dissipation element for LED car lamp of the invention is being actually used in the structural representation of LED car lamp；
Fig. 2 is the hierarchy schematic diagram of heat dissipation element of the present invention.
Specific embodiment
The present invention is more specifically described in detail with specific embodiment below in conjunction with the accompanying drawings.
Heat dissipation element for LED car lamp of the invention being actually used in the structural representation of LED car lamp as shown in figure 1,
Including heat dissipation base 1, metal knitted silk screen 2, phase-change material 3, high heat conductive insulating coating 4, LED light source 7 and lamp socket 8；
The material of heat dissipation base 1 is aluminium alloy；The surface of heat dissipation base 1 is provided with fin 5；The bottom of heat dissipation base 1 is provided with peace
Tankage 6；Three groups of metal knitted silk screens 2 are welded with mounting groove 6；Metal knitted silk screen 2 is formed using metal wire braiding, metal wire
Material be high thermal conductivity metal, including red copper or aluminium, the diameter of section of metal wire is 0.1mm ~ 0.4mm；Metal knitted silk screen 2
Cross-sectional width is 10mm ~ 50mm；
Phase-change material 3 is filled in the gap of metal knitted silk screen 2；The principal component of phase-change material 3 includes neopentyl glycol（NPG）, season
Penta tetrol（PE）, Pehanorm (TAM) and trimethylolethane (PG) in interior solid-solid phase transition material it is a kind of with
On；The phase transition temperature of phase-change material 3 is at 30 DEG C ~ 70 DEG C；
The surface of heat dissipation base 1 and metal knitted silk screen 2 is coated with high heat conductive insulating coating 4；The material of high heat conductive insulating coating 4
Expect to be boron nitride silicones；The thickness of high heat conductive insulating coating 4 is 0.3 ~ 1mm；
The hierarchy schematic diagram of the metal knitted silk screen 2 of high heat conductive insulating coating 4 is coated with as shown in Fig. 2 by surface to interior
Portion includes high heat conductive insulating coating 4, phase-change material 3 and metal knitted silk screen 2 successively；
Whole heat dissipation element device is arranged on the bottom of lamp socket 8, and the upper end of lamp socket 8 is provided with LED light source 7.
Embodiment 1
A kind of heat dissipation element for LED car lamp and preparation method thereof, comprises the following steps：
（1）The cross-sectional width that selection is provided with fin is 10mm, and wire diameter is the metal red copper braiding silk screen of 0.1mm, red copper
Metal knitted silk screen adjusts expansion shape according to car light inner chamber；
（2）It is 1.6 with mol ratio:1 neopentyl glycol and pentaerythrite as composite phase-change material principal component（Phase transition temperature is
30℃）, phase-change material is heated to more than solid liquid phase height, metal knitted silk screen is immersed in liquid phase-change under vacuum
In material, phase-change material is set to fill the gap of the metal knitted silk screen of red copper；
（3）After submergence 10min, the metal knitted silk screen of red copper that will be filled with phase-change material takes out, be cooled to phase transformation temperature pointses with
Under, solidify phase-change material, obtain having the figurate metal knitted silk screen of composite phase-change material red copper；
（4）Metal knitted silk screen is welded in the mounting groove of aluminium alloy heat dissipation base, in heat dissipation base and metal knitted silk screen
Surface spraying thickness is the boron nitride silicone coatings of 0.3mm, obtains final product the heat dissipation element for LED car lamp.
Metal knitted silk screen, phase-change material, the LED car lamp of high heat conductive insulating coating integration prepared using the above method
Heat dissipation element, compared with LED car lamp of the tradition with fin structure, with stronger spatial adaptation ability and the capacity of heat transmission, makes
LED junction temperature drop is low by 18.5%.
Embodiment 2
A kind of heat dissipation element for LED car lamp and preparation method thereof, comprises the following steps：
（1）The cross-sectional width that selection is provided with fin is 30mm, and wire diameter is the aluminum metal braiding silk screen of 0.2mm, aluminum metal
Braiding silk screen adjusts expansion shape according to car light inner chamber；
（2）It is 1.6 with mol ratio:1:2 neopentyl glycol, pentaerythrite and trimethylolethane as composite phase-change material master
Composition（Phase transition temperature is 50 DEG C）, phase-change material is heated to more than solid liquid phase height, aluminum metal is woven under vacuum
Silk screen is immersed in liquid state phase change material, makes the gap of the metal knitted silk screen of phase-change material filling aluminum；
（3）After submergence 15min, the aluminum metal braiding silk screen that will be filled with phase-change material takes out, and is cooled to below phase transformation temperature pointses,
Solidify phase-change material, obtain having figurate composite phase-change material aluminum metal braiding silk screen；
（4）Aluminum metal braiding silk screen is welded in the mounting groove of heat dissipation base, in heat dissipation base and metal knitted silk net surface
Coating thickness is the boron nitride silicone coatings of 0.7mm, obtains final product the heat dissipation element for LED car lamp.
Metal knitted silk screen, phase-change material, the LED car lamp of high heat conductive insulating coating integration prepared using the above method
Heat dissipation element, compared with LED car lamp of the tradition with fin structure, with stronger spatial adaptation ability and the capacity of heat transmission, makes
LED junction temperature drop is low by 21.7%.
Embodiment 3
A kind of heat dissipation element for LED car lamp and preparation method thereof, comprises the following steps：
（1）The cross-sectional width that selection is provided with fin is 50mm, and wire diameter is the metal knitted silk screen of red copper of 0.4mm, red copper
Metal knitted silk screen adjusts expansion shape according to car light inner chamber；
（2）It is 1.6 with mol ratio:2.5:2 neopentyl glycol, Pehanorm and trimethylolethane are used as composite phase-change material
The principal component of material（Phase transition temperature is 70 DEG C）, phase-change material is heated to more than solid liquid phase height, under vacuum by red copper
Metal knitted silk screen is immersed in liquid state phase change material, phase-change material is filled the gap of the metal knitted silk screen of red copper；
（3）After submergence 20min, the metal knitted silk screen of red copper that will be filled with phase-change material takes out, be cooled to phase transformation temperature pointses with
Under, solidify phase-change material, obtain having the figurate metal knitted silk screen of composite phase-change material red copper；
（4）Metal knitted silk screen is welded in the mounting groove of heat dissipation base, is sprayed in heat dissipation base and metal knitted silk net surface
It is the boron nitride silicone coatings of 1mm to apply thickness, obtains final product the heat dissipation element for LED car lamp.
Metal knitted silk screen, phase-change material, the LED car lamp of high heat conductive insulating coating integration prepared using the above method
Heat dissipation element, compared with LED car lamp of the tradition with fin structure, with stronger spatial adaptation ability and the capacity of heat transmission, makes
LED junction temperature drop is low by 24.2%.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, and other are any without departing from Spirit Essence of the invention
With the change, modification, replacement made under principle, combine, simplify, should be equivalent substitute mode, be included in of the invention
Within protection domain.
Claims (8)
1. a kind of heat dissipation element for LED car lamp, it is characterised in that including heat dissipation base（1）, metal knitted silk screen（2）, phase
Become material（3）With high heat conductive insulating coating（4）；The heat dissipation base（1）Surface be provided with fin（5）；The heat dissipation base
（1）Bottom be provided with mounting groove（6）；The mounting groove（6）Interior welding metal weaves silk screen（2）；The phase-change material（3）Filling
In metal knitted silk screen（2）Gap；The heat dissipation base（1）With metal knitted silk screen（2）Surface be coated with high heat conduction
Insulating coating（4）.
2. a kind of heat dissipation element for LED car lamp according to claim 1, it is characterised in that the heat dissipation base（1）
Material be aluminium alloy；The metal knitted silk screen（2）Formed using metal wire braiding, the metal knitted silk screen（2）Section
Width is 10mm ~ 50mm.
3. a kind of heat dissipation element for LED car lamp according to claim 2, it is characterised in that the material of the metal wire
Expect to be high thermal conductivity metal, including red copper or aluminium, the diameter of section of metal wire is 0.1mm ~ 0.4mm.
4. a kind of heat dissipation element for LED car lamp according to claim 1, it is characterised in that the phase-change material（3）
Principal component including in the solid-solid phase transition material including neopentyl glycol, pentaerythrite, Pehanorm and trimethylolethane
More than one.
5. a kind of heat dissipation element for LED car lamp according to claim 1, it is characterised in that the phase-change material（3）
Phase transition temperature at 30 DEG C ~ 70 DEG C.
6. a kind of heat dissipation element for LED car lamp according to claim 1, it is characterised in that the high heat conductive insulating
Coating（4）Material be boron nitride silicones；The high heat conductive insulating coating（4）Thickness be 0.3 ~ 1mm.
7. the method for preparing a kind of heat dissipation element for LED car lamp described in any one of claim 1 ~ 6, it is characterised in that
Comprise the following steps：
（1）Fin will be provided with（5）Metal knitted silk screen（2）Expansion shape, phase-change material are adjusted according to car light inner chamber（3）Heating
To more than solid liquid phase height, under vacuum by metal knitted silk screen（2）It is immersed in liquid state phase change material（3）In, make phase transformation
Material（3）Fill metal knitted silk screen（2）Gap；
（2）After submergence is finished, phase-change material is will be filled with（3）Metal knitted silk screen（2）Take out, be cooled to phase transformation temperature pointses with
Under, make phase-change material（3）Solidification, obtains having the metal knitted silk screen of figurate composite phase-change material；
（3）Will be filled with phase-change material（3）Metal knitted silk screen（2）It is welded on heat dissipation base（1）Mounting groove（6）It is interior,
Heat dissipation base（1）With metal knitted silk screen（2）Surface spraying high heat conductive insulating coating（4）, obtain the dissipating for LED car lamp
Thermal element.
8. a kind of preparation method of heat dissipation element for LED car lamp according to claim 7, it is characterised in that step
（1）In, the time of the submergence is 10min ~ 20min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195301.8A CN106931382B (en) | 2017-03-29 | 2017-03-29 | Heat dissipation element for LED car lamp and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710195301.8A CN106931382B (en) | 2017-03-29 | 2017-03-29 | Heat dissipation element for LED car lamp and preparation method thereof |
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| CN106931382A true CN106931382A (en) | 2017-07-07 |
| CN106931382B CN106931382B (en) | 2023-03-21 |
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| WO2021093516A1 (en) * | 2019-11-14 | 2021-05-20 | 承奕科技股份有限公司 | Composite heat dissipation device for use in heating component having insertion port, and heat dissipator having same |
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| Publication number | Publication date |
|---|---|
| CN106931382B (en) | 2023-03-21 |
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