CN206222272U - A kind of LED radiating fins of the micro- toothing in surface - Google Patents
A kind of LED radiating fins of the micro- toothing in surface Download PDFInfo
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- CN206222272U CN206222272U CN201621152022.0U CN201621152022U CN206222272U CN 206222272 U CN206222272 U CN 206222272U CN 201621152022 U CN201621152022 U CN 201621152022U CN 206222272 U CN206222272 U CN 206222272U
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Abstract
The utility model discloses a kind of LED radiating fins of the micro- toothing in surface.The micro- toothing in surface of the LED radiating fins of the micro- toothing in the surface is array round platform, array truncated rectangular pyramids or array trench, the micro- toothing in surface is effectively increased area of dissipation and improves the radianting capacity of fin, and the flow-disturbing effect that the micro- toothing in surface is produced improves the heat convection ability of fin.A kind of micro- toothing in surface of the LED radiating fins of the micro- toothing in surface of the present utility model is molded by chemical etching.A kind of LED radiating fins of the micro- toothing in surface of the utility model effectively reduce the temperature of LED packagings and extend device lifetime, using chemical etching manufacture method manufactured by the micro- toothing in surface have array structure reproduction ratio high, manufacturing cycle is short, the advantage of manufacturing process simple economy.
Description
Technical field
The utility model is related to Optical element manufacturing field, and in particular to a kind of LED radiating fins of the micro- toothing in surface.
Background technology
LED is a kind of semiconductor that can convert electrical energy into visible ray, and it changes incandescent lamp tungsten filament and lights and fluorescence
The luminous principle of electricity-saving lamp tricolor powder, and use electric energy to light, it is numerous with long lifespan, high, the radiationless, low-power consumption of light efficiency etc.
Advantage, with the proposition of energy-conservation and green illumination theory, LED is gradually introduced in illuminator as light source.
At present, the light emitting source that the normal lighting lamp such as daily bulb, fluorescent lamp is used is substantially with incandescent lamp bulb or glimmering
Based on light fluorescent lamp, however, the electro-optical efficiency of incandescent lamp bulb and fluorescent daylight lamp is all than relatively low, and its heat is big, makes
With short life, general only 3000 hours or so.
LED lamp power is generally larger, and general more than 70% power can be converted into heat, causes LED lamp inside mistake
Concentrated in heat, it is therefore desirable to by radiating fin by heat derives.Existing LED radiating fins are planar structure, limited
Fin fixed mount space in, the area of dissipation of fin also therefore suffers from limitation, and heat passes to substrate and passes to wing again from chip
When on piece, the radiating efficiency on fin is not high enough and causes device bulk temperature higher.By traditional machining mode in wing
Structure is processed on piece surface can increase fin area of dissipation in limited encapsulated space, but traditional machining mode processes wing
The efficiency of the micro- tooth in piece surface is low, and cost is big, and is difficult to out small scale structures.
And using chemical etching manufacture method manufactured by the micro- toothing in surface have array structure reproduction ratio high, manufacture
Cycle is short, the advantage of manufacturing process simple economy.
Utility model content
For the defect for overcoming existing LED fins heat dispersion not enough and tradition machining is manufactured, the utility model is carried
For a kind of LED radiating fins of the micro- toothing in surface.
The micro- toothing in surface is effectively increased area of dissipation and improves the radianting capacity of fin, and what the micro- toothing in surface was produced disturbs
Stream effect improves the heat convection ability of fin.
The utility model prepares the LED radiating fins with the micro- toothing in surface by way of chemical etching.
The utility model is achieved through the following technical solutions.
A kind of LED radiating fins of the micro- toothing in surface, the micro- tooth knot in surface of the LED radiating fins of the micro- toothing in the surface
Structure is array round platform, array truncated rectangular pyramids or array trench.
Further, the height of the micro- toothing in the surface is 200 μm -1000 μm.
Further, in the array round platform or array truncated rectangular pyramids, micro- crest top land face of single round platform or single truncated rectangular pyramids
Product is 0.25mm2-6mm2。
Further, the top surface width of the array trench is 0.5mm-2.8mm.
Further, micro- tine angle of the micro- toothing in the surface is 70-85 °.
A kind of preparation method of the LED radiating fins of the micro- toothing in surface, comprises the following steps：
（1）The preparation of template against corrosion：AutoCAD Software for Design array patterns, using inkjet printing by black non transparent battle array
Row graphic printing obtains template against corrosion on transparent graphic arts film；
（2）UV solidifies：The fin surface of plane is polished, after oil removal treatment, by hot plastic packaging machine by light actuating resisting corrosion dry film
Surface that is smooth, being bubble-freely fitted in fin, then template alignment against corrosion is fitted on light actuating resisting corrosion dry film, and use transparent load
Slide is compressed, and carries out UV solidifications；
（3）Development treatment：Fin after UV is solidified is developed in being completely immersed in developer solution, is taken every 10 ~ 15s
Go out fin and wipe the light actuating resisting corrosion dry film for coming off；The step is repeated until the black ink array pattern region without UV solidifications
Light actuating resisting corrosion dry film all come off, clear water cleaning；
（4）Etching, demoulding treatment：After fin etchant after cleaning is etched, clear water cleaning；The immersion demoulding is molten
Demoulding treatment is carried out in liquid, until the de- wash clean of all light actuating resisting corrosion dry films of fin surface；Clear water is cleaned, and obtains the surface micro-
The LED radiating fins of toothing.
Further, step（1）In, the array pattern is circular array, array rectangle or array bar shaped.
Further, step（2）In, the fin includes copper fin.
Further, step（2）In, the solidification power of the UV solidifications is 1kw, and the main crests of UV are 365nm, irradiation distance
It is 100 ~ 150mm, hardening time is 10 ~ 15s.
Further, step（3）In, the developer solution is the matter according to the special developer of light actuating resisting corrosion dry film and water
Amount is than being 1:60~1:80 preparations, the main component of the special developer of light actuating resisting corrosion dry film is sodium carbonate.
Further, step（4）In, the etchant is the Na of 200 ~ 300g/L2S2O8Solution.
Further, step（4）In, the etching is 60 ~ 120min of etching under 40 ~ 60 DEG C of water bath.
Further, step（4）In, it according to the mass ratio of releasing agent and water is 1 that the mold release solution is：40~1:60 match somebody with somebody
System, the main component of the releasing agent is NaOH.
When a kind of LED radiating fins of the micro- toothing in surface are used for the radiating of LED packagings, fin stopper slot passes through
It is weldingly fixed on LED-baseplate bottom；LED radiating fins insertion fin stopper slot with the micro- toothing in surface, and by bolt
Fin is fixed in fin stopper slot with nut；There are multiple fins to be fixed by this mode in single led packaging；Wing
Piece fixed column supports fin, fin to fix the bottom that column bottom is fixed on LED-baseplate support frame by screw upwards, and by adjusting
Be completely fixed for the position of fin by section screw；Material link block is connected to LED-baseplate top, and LED module is connected to material company
Connection module top, then cover LED module with lampshade.LED module is equal by material link block by the heat that electrical power is converted
It is diffused in LED-baseplate evenly, then is radiated by the LED radiating fins of the micro- toothing in surface that LED-baseplate reaches bottom, has
Effect derives the heat that LED module is produced.
Compared with prior art, the utility model has the following advantages that and beneficial effect：
（1）The micro- toothing in surface of the LED radiating fins of the micro- toothing in the utility model surface is effectively increased area of dissipation
With the radianting capacity for improving fin, the flow-disturbing effect that the micro- toothing in surface is produced improves the heat convection ability of fin, realizes
The optimization of LED packaging heat dispersions, improves LED packagings and uses reliability and life-span；
（2）The utility model using chemical etching manufacture method manufactured by the micro- toothing in surface have array structure answer
Than high, the manufacturing cycle is short, the advantage of manufacturing process simple economy for system.
Brief description of the drawings
Fig. 1 is the schematic diagram of array circular configuration template against corrosion；
Fig. 2 has the SEM schematic diagrames of the LED radiating fins of the micro- toothing of array round platform for surface；
Fig. 3 has the free convection schematic diagram on the LED radiating copper fins of the micro- toothing of array round platform for surface；
Fig. 4 has the axonometric drawing of the LED radiating fins of the micro- toothing of array round platform for surface；
Fig. 5 has the structural representation of the LED packagings of the micro- toothing LED radiating fins of array round platform for surface；
Fig. 6 has the axonometric drawing of the LED radiating fins of the micro- toothing of array truncated rectangular pyramids for surface；
Fig. 7 has the axonometric drawing of the LED radiating fins of the micro- toothing of array trench for surface.
Specific embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
Can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to protection domain of the present utility model
Define.
Embodiment 1
Preparing surface has the LED radiating fins of the micro- toothing of array round platform
（1）The preparation of template against corrosion：Using AutoCAD Software for Design array circular patterns, by the impermeable optical arrays circle of black
Shape figure is printed to transparent graphic arts film using the mode of inkjet printing, is made template against corrosion；The array circular configuration for obtaining
Template against corrosion schematic diagram it is as shown in Figure 1；
（2）To material for the plane fin of copper carries out surface polishing and oil removal treatment, by hot plastic packaging machine by photoresist
Dry film is smooth, be bubble-freely fitted in fin surface；Template alignment against corrosion laminating is placed on into surface light actuating resisting corrosion dry film
On copper fin, and template against corrosion is compressed with the thick transparent wave carrier pieces of 1mm, being positioned over portable UV solidifications motor spindle carries out UV solidifications, UV
Solidification power is 1kw, and the main crests of UV are 365nm, and irradiation distance is 150mm, and hardening time is 15s；
（3）It is the special developer of light actuating resisting corrosion dry film and the water of sodium carbonate according to 1 by main component：60 mass ratio configuration
Into developer solution, the copper fin that surface light actuating resisting corrosion dry film carried out UV curing process is completely immersed in developer solution
Row development, copper fin and light actuating resisting corrosion dry film that is subjected to development to fin surface with non-dust cloth and coming off are taken out at interval of 15s
Wiped, placed into urgent need development in developer solution；The step is repeated until the black ink array circle without UV solidifications
The light actuating resisting corrosion dry film of shape graphics field all comes off, and takes out fin and clear water cleaning；
（4）Configure the Na of 300g/L2S2O8Etchant, 120min etchings are carried out under 40 DEG C of water baths, complete lose
The copper fin clear water at quarter is cleaned up；According to 1：Main component is releasing agent and the water proportioning of NaOH by 40 mass ratio,
Configuration mold release solution, and the copper fin after cleaning up is completely immersed in mold release solution carries out demoulding treatment, until copper fin
The all light actuating resisting corrosion dry films in surface take off wash clean, reuse clear water and are cleaned, and obtaining surface has the micro- tooth knot of array round platform
The LED radiating fins of structure.
The surface for obtaining has the SEM schematic diagrames of the LED radiating fins of the micro- toothing of array round platform as shown in Fig. 2 single
Micro- crest top land area of round platform is 6mm2, upper table surface is approximate circle, and side etching phenomenon occurs makes the micro- tooth of round platform produce inclination angle.
The surface for obtaining has the free convection schematic diagram such as Fig. 3 institutes on the LED radiating fins of the micro- toothing of array round platform
Show, from the figure 3, it may be seen that flow-disturbing phenomenon is generated when air-flow is by round platform surface, bigger area of dissipation and longer gas stream
Dynamic distance causes that radiating effect is strengthened.
Fig. 4 is the axonometric drawing of the LED radiating fins that the surface for obtaining has the micro- toothing of array round platform, as shown in Figure 4, circle
The height of the micro- toothing of platform is 960 μm, and micro- tine angle is 70 °.
The surface for obtaining has the LED radiating fins of the micro- toothing of array round platform for the radiating of LED packagings, LED
The structure of packaging as shown in figure 5, including：LED module 1, lampshade 2, material link block 3, LED-baseplate 4, the micro- tooth in surface
Structural fins 5, LED-baseplate support frame 6, lower screws 7, bolt 8, nut 9, fin stopper slot 10, fin fixed column 11.
Material link block 3 is connected to the top of LED-baseplate 4, and LED module 1 is connected to the top of material link block 3, lampshade 2
Cover LED module 1；Fin stopper slot logical 10 is crossed and is weldingly fixed on the bottom of LED-baseplate 4, and surface has the micro- toothing of round platform array
The insertion of LED radiating fins 5 fin stopper slot 10, and fin 5 is fixed in fin stopper slot 10 by bolt 8 and nut 9,
There are 8 fins to be fixed by this mode in single led packaging；Fin fixed column 11 supports fin 5 upwards, and fin is fixed
The bottom of LED-baseplate support frame 6 is fixed in the bottom of post 11 by screw 7, and is completely fixed the position of fin 5 by adjusting screw 7.
There is the LED packagings that the LED radiating fins of the micro- toothing of array round platform are assembled and commonly have using surface
The LED packagings of plane fin structure are compared, operating temperature reduction by 26.3%.
Embodiment 2
Preparing surface has the LED radiating fins of the micro- toothing of array truncated rectangular pyramids
（1）The preparation of template against corrosion：Using AutoCAD Software for Design array rectangular graphs, by the impermeable optical arrays square of black
Shape figure is printed to transparent graphic arts film using the mode of inkjet printing, is made template against corrosion；
（2）To material for the plane fin of copper carries out surface polishing and oil removal treatment, by hot plastic packaging machine by photoresist
Dry film is smooth, be bubble-freely fitted in fin surface；Template alignment against corrosion laminating is placed on into surface light actuating resisting corrosion dry film
On copper fin, and template against corrosion is compressed with the thick transparent wave carrier pieces of 1mm, being positioned over portable UV solidifications motor spindle carries out UV solidifications, UV
Solidification power is 1kw, and the main crests of UV are 365nm, and irradiation distance is 120mm, and hardening time is 12s；
（3）It is the special developer of light actuating resisting corrosion dry film and the water of sodium carbonate according to 1 by main component：70 mass ratio configuration
Into developer solution, the copper fin that surface light actuating resisting corrosion dry film carried out UV curing process is completely immersed in developer solution
Row development, copper fin and light actuating resisting corrosion dry film that is subjected to development to fin surface with non-dust cloth and coming off are taken out at interval of 12s
Wiped, placed into urgent need development in developer solution；The step is repeated until the black ink array square without UV solidifications
The light actuating resisting corrosion dry film of shape graphics field all comes off, and takes out fin and clear water cleaning；
（4）Configure the Na of 250g/L2S2O8Etchant, 90min etchings are carried out under 50 DEG C of water baths, complete lose
The copper fin clear water at quarter is cleaned up；According to 1：Main component is releasing agent and the water proportioning of NaOH by 50 mass ratio,
Configuration mold release solution, and the copper fin after cleaning up is completely immersed in mold release solution carries out demoulding treatment, until copper fin
The all light actuating resisting corrosion dry films in surface take off wash clean, reuse clear water and are cleaned, and obtaining surface has the micro- tooth of array truncated rectangular pyramids
The LED radiating fins of structure.
The surface for obtaining has the axonometric drawing of the LED radiating fins of the micro- toothing of array truncated rectangular pyramids as shown in fig. 6, by Fig. 6
Understand, micro- crest top land area of single truncated rectangular pyramids is 5.5mm2, the height of the micro- toothing of truncated rectangular pyramids is 550 μm, and micro- tine angle is
80°。
There is the LED packagings that the LED radiating fins of the micro- toothing of array truncated rectangular pyramids are assembled with common tool using surface
The LED packagings for having plane fin structure are compared, operating temperature reduction by 22.7%.
Embodiment 3
Preparing surface has the LED radiating fins of the micro- toothing of array trench
（1）The preparation of template against corrosion：Using AutoCAD Software for Design array bar patterns, by the light tight array bar of black
Shape figure is printed to transparent graphic arts film using the mode of inkjet printing, is made template against corrosion；
（2）To material for the fin of copper carries out surface polishing and oil removal treatment, by hot plastic packaging machine by light actuating resisting corrosion dry film
It is smooth, be bubble-freely fitted in fin surface；Template alignment against corrosion laminating is placed on into surface the copper wing of light actuating resisting corrosion dry film
On piece, and template against corrosion is compressed with the thick transparent wave carrier pieces of 1mm, being positioned over portable UV solidifications motor spindle carries out UV solidifications, UV solidifications
Power is 1kw, and the main crests of UV are 365nm, and irradiation distance is 100mm, and hardening time is 10s；
（3）It is the special developer of light actuating resisting corrosion dry film and the water of sodium carbonate according to 1 by main component：80 mass ratio configuration
Into developer solution, the copper fin that surface light actuating resisting corrosion dry film carried out UV curing process is completely immersed in developer solution
Row development, copper fin and light actuating resisting corrosion dry film that is subjected to development to fin surface with non-dust cloth and coming off are taken out at interval of 10s
Wiped, placed into urgent need development in developer solution；The step is repeated until the black ink array bar without UV solidifications
The light actuating resisting corrosion dry film of shape graphics field all comes off, and takes out fin and clear water cleaning；
（4）Configure the Na of 200g/L2S2O8Etchant, 60min etchings are carried out under 60 DEG C of water baths, complete lose
The copper fin clear water at quarter is cleaned up；According to 1：Main component is releasing agent and the water proportioning of NaOH by 60 mass ratio,
Configuration mold release solution, and the copper fin after cleaning up is completely immersed in mold release solution carries out demoulding treatment, until copper fin
The all light actuating resisting corrosion dry films in surface take off wash clean, reuse clear water and are cleaned, and obtaining surface has the micro- tooth knot of array trench
The LED radiating fins of structure.
The surface for obtaining has the axonometric drawing of the LED radiating fins of the micro- toothing of array trench as shown in fig. 7, can by Fig. 7
Know, the top surface width of groove is 2.8mm, and the height of the micro- toothing of groove is 220 μm, and micro- tine angle is 85 °.
There is the LED packagings that the LED radiating fins of the micro- toothing of array round platform are assembled and commonly have using surface
The LED packagings of plane fin structure are compared, operating temperature reduction by 15.2%.
Mentality of designing of the present utility model is more than merely illustrative, in the case where system is allowed, the utility model can expand
It is other array structure forms to open up, or other assemblies provide reinforcing heat sinking function, so as to extend its function to greatest extent.
The above, specific implementation method only of the present utility model, but protection domain of the present utility model do not limit to
In this, any change or replacement expected without creative work should all be covered within protection domain of the present utility model.
Therefore, the protection domain that protection domain of the present utility model should be limited by claims is defined.
Claims (4)
1. LED radiating fins of the micro- toothing in a kind of surface, it is characterised in that the LED radiating fins of the micro- toothing in the surface
The micro- toothing in surface is array round platform, array truncated rectangular pyramids or array trench.
2. LED radiating fins of the micro- toothing in a kind of surface according to claim 1, it is characterised in that the surface is micro-
The height of toothing is 200 μm -1000 μm.
3. a kind of LED radiating fins of the micro- toothing in surface according to claim 1, it is characterised in that the array circle
In platform or array truncated rectangular pyramids, micro- crest top land area of single round platform or single truncated rectangular pyramids is 0.25mm2-6mm2；The array trench
Top surface width be 0.5mm-2.8mm.
4. LED radiating fins of the micro- toothing in a kind of surface according to claim 1, it is characterised in that the surface is micro-
Micro- tine angle of toothing is 70-85 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621152022.0U CN206222272U (en) | 2016-10-31 | 2016-10-31 | A kind of LED radiating fins of the micro- toothing in surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621152022.0U CN206222272U (en) | 2016-10-31 | 2016-10-31 | A kind of LED radiating fins of the micro- toothing in surface |
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| Publication Number | Publication Date |
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| CN206222272U true CN206222272U (en) | 2017-06-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382610A (en) * | 2016-10-31 | 2017-02-08 | 华南理工大学 | LED heat-radiating fins of surface micro-tooth structures and preparation method of LED heat-radiating fins |
-
2016
- 2016-10-31 CN CN201621152022.0U patent/CN206222272U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382610A (en) * | 2016-10-31 | 2017-02-08 | 华南理工大学 | LED heat-radiating fins of surface micro-tooth structures and preparation method of LED heat-radiating fins |
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