CN102260484A - LED (light emitting diode) heat conduction filler - Google Patents
LED (light emitting diode) heat conduction filler Download PDFInfo
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- CN102260484A CN102260484A CN2010101830355A CN201010183035A CN102260484A CN 102260484 A CN102260484 A CN 102260484A CN 2010101830355 A CN2010101830355 A CN 2010101830355A CN 201010183035 A CN201010183035 A CN 201010183035A CN 102260484 A CN102260484 A CN 102260484A
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- heat
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- weighting agent
- filler
- powder
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Abstract
The invention relates to an LED (light emitting diode) heat conduction filler which is used for enhancing the heat conduction between an LED and a heat dissipator and belongs to the technical field of heat dissipation. The surface of the material of the conventional LED heat-dissipation heat-transfer system is uneven and has tiny air gaps, and thus, the conventional LED heat-dissipation heat-transfer system is not beneficial to heat diffusion due to high heat resistance of air. Ultrafine silicon powder and 3K/W silicone grease are completely mixed to form a starchy filler; and the starchy filler is applied between the LED and heat dissipator, thereby enhancing the heat conduction, overcoming the defects and solving the problem of low heat dissipation speed in the LED heat dissipator. Silicon substances are recycled from waste, thereby saving the energy; and the ultrafine silicon powder is used as the filler, thereby enhancing the heat conduction and having advanced technique; and the invention ensures long service life and low light attenuation.
Description
Technical field
The present invention relates to a kind of LED thermal conduction weighting agent, be used for the saturated superfine filler between LED and heat abstractor, strengthen the thermal conduction between LED and the heat abstractor, belong to the heat dissipation technology field.
Background technology
LED (Light Emitting Diode, photodiode) is a kind of solid-state semiconducter device that electric energy can be converted into visible light, and it can directly be converted into light to electricity.LED has that volume is little, and current consumption is low, long service life, and high brightness, low in calories, environmental protection, the sturdy and durable good characteristic that waits is acknowledged as optimal light source.Conventional LED heat abstractor is by the LED base plate for packaging heat to be delivered to radiating bottom plate, and radiating bottom plate is connected with heat-transfer system again, and heat-transfer system is connected with scatterer again, and heat is distributed.Since the unfairness of heat-transfer system material surface, fine air gap.The interface resistance of air is very big, is unfavorable for thermodiffusion, and switching process is many more, and whole interface resistance is big more, causes the heat transmission few, and radiating effect is poor.Thereby people wish to design a kind of technical scheme that can overcome above-mentioned defective.
Summary of the invention
In order to eliminate air gap, the enhancing thermal conduction between LED and the heat abstractor, the invention provides a kind of LED thermal conduction weighting agent, be used for the saturated superfine filler between LED and heat abstractor.
To achieve these goals, the scheme that the present invention solves its technical problem comprises: (1) reclaims silicon from siliceous things such as waste and old sun power, semi-conductor, and is ground into fine particle with pulverizer; (2) with shredder silicon grain being carried out extra-fine grinding, to become diameter be the powder of 5um; (3) Si powder and the silicone grease of 3K/W are filled part and mix stirring, forming density is the starchiness weighting agent of every cubic centimetre 10 gram; (4) be coated between LED and the heat abstractor the starchiness weighting agent is saturated.The manufacture craft that it is characterized in that weighting agent: the particle diameter of Si powder is about 5um; Si powder is filled part with the silicone grease of 3K/W and is mixed stirring, and forming density is the starchiness weighting agent of every cubic centimetre 10 gram.Weighting agent is saturated to be coated between LED and the heat abstractor.
Among the present invention: from waste, reclaim silicon matter, save energy; Utilize superfine silica powder to make weighting agent, strengthen heat conduction, technology advanced person; LED long lifetime, low light decay have been guaranteed.
Embodiment
At first, get one section silicon rod or from useless solar cell, take out siliceous thing and in pulverizer, be ground into particulate state, carry out sifting sort again, fine particle is put into grinding machine for grinding, and to become diameter be the 5-8 micron, again through adding behind the electrostatic separation particle removal that diameter is bigger in the 3K/W white silicone grease, fully stir evenly, obtain the starchiness preparation of density, leave standstill after 5 hours stand-by for restraining for every cubic centimetre 10.5 approximately.To be applied in right amount between LED and its heat abstractor combining site through said process gained silicone grease, and compress by light commentaries on classics LED.Heat-conducting silicone grease is fully moistened soak combining site.Said process is applied to 30 ℃ of room temperatures, 1W LED, the 350MA electric current is in 10 square centimeters of fin-shaped scatterer experiments.Find that utilization silicon heat-conducting silicone grease of the present invention can heatproof 300 ℃, molecular structure is active, stable performance, be difficult for dry, non-greasy, the insulation degree reaches: 1 * 10
9, flame retardant rating reaches UL94-V0.By contrasting with the experiment of ordinary hot conduction pattern, heat conduction velocity doubles, and light decay can reduce more than 1 times, and reach the effect of long-life energy-saving more than one times the work-ing life that can prolong LED.
Claims (2)
1. a LED thermal conduction weighting agent is used for the saturated superfine filler between LED and heat abstractor, and it comprises: (1) reclaims silicon from siliceous things such as waste and old sun power, semi-conductor, and is ground into fine particle with pulverizer; (2) with shredder silicon grain being carried out extra-fine grinding, to become diameter be the powder of 5um; (3) Si powder and the silicone grease of 3K/W are filled part and mix stirring, forming density is 10
5/ mm
3The starchiness weighting agent; (4) be coated between LED and the heat abstractor the starchiness weighting agent is saturated, it is characterized in that the manufacture craft of weighting agent: the particle diameter of Si powder is about 5um; Si powder is filled part with the silicone grease of 3K/W and is mixed stirring, and forming density is the starchiness weighting agent of every cubic centimetre 10 gram.
2. a kind of LED thermal conduction weighting agent according to claim 1 is characterized in that between saturated LED of being coated on of weighting agent and the heat abstractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101830355A CN102260484A (en) | 2010-05-24 | 2010-05-24 | LED (light emitting diode) heat conduction filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101830355A CN102260484A (en) | 2010-05-24 | 2010-05-24 | LED (light emitting diode) heat conduction filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102260484A true CN102260484A (en) | 2011-11-30 |
Family
ID=45007336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101830355A Pending CN102260484A (en) | 2010-05-24 | 2010-05-24 | LED (light emitting diode) heat conduction filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102260484A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317805A (en) * | 2000-04-10 | 2001-10-17 | 阎宝连 | Thermally conductive silicon powder-base insulator |
| CN101864279A (en) * | 2010-05-17 | 2010-10-20 | 盐城市赛瑞特半导体照明有限公司 | Saturated superfine filler used between LED and heat dissipation device |
-
2010
- 2010-05-24 CN CN2010101830355A patent/CN102260484A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317805A (en) * | 2000-04-10 | 2001-10-17 | 阎宝连 | Thermally conductive silicon powder-base insulator |
| CN101864279A (en) * | 2010-05-17 | 2010-10-20 | 盐城市赛瑞特半导体照明有限公司 | Saturated superfine filler used between LED and heat dissipation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111130 |