CN102278727A - Heat radiation device of high-power LED (light emitting diode) array - Google Patents
Heat radiation device of high-power LED (light emitting diode) array Download PDFInfo
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- CN102278727A CN102278727A CN2011102029087A CN201110202908A CN102278727A CN 102278727 A CN102278727 A CN 102278727A CN 2011102029087 A CN2011102029087 A CN 2011102029087A CN 201110202908 A CN201110202908 A CN 201110202908A CN 102278727 A CN102278727 A CN 102278727A
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Abstract
The invention aims to provide a heat radiation device of a high-power LED (light emitting diode) array, wherein the heat radiation device has low cost, long service life and a good heat radiation effect, and is convenient to install. The heat radiation device comprises a heat radiation body consisting of a heat radiation pipe and a heat absorption medium in the heat radiation pipe, wherein the heat radiation pipe comprises an inlet, an outlet and a contact plane; the heat radiation pipe is a plastic pipe or a metal pipe; a bonding mode or a welding mode is adopted generally for an LED lamp bead and the contact plane of the heat radiation pipe, thus the back side of the lamp bead and the contact plane are attached closely so as to ensure the heat transfer effect; and the heat absorption medium is generally water, also can be oil or other heat absorption liquids, can flow in the heat radiation pipe, and takes heat which is generated by the LED lamp bead away continuously.
Description
Technical field
The present invention relates to a kind of radiating and cooling system, especially a kind of heat abstractor of high-power LED array.
Background technology
Great power LED is meant the light emitting diode that has big rated operational current.Common LED power is generally 0.05W, operating current is 20mA, and great power LED can reach 1W, 2W even tens of watts, and operating current can be tens milliamperes not to be waited to the hundreds of milliampere.Great power LED as the 4th generation electric light source, possesses the title of " green illumination light source ", have little, the safe low-voltage of volume, good characteristics such as the life-span is long, electro-optical efficiency is high, response speed is fast, energy-saving and environmental protection, have no stroboscopic, color is honest, brightness is high advantage simultaneously, will replace traditional incandescent lamp, halogen tungsten lamp and fluorescent lamp and become the light source of new generation of 21 century.City illumination, outdoor advertising, neon light, lamp box etc. adopt high-power LED array as illuminator at present, and when power reached a certain amount of, the heat dissipation problem of LED was to run into very important problem during the LED product uses always.In order to reach certain brightness requirement, in the beautiful effect of dazzling of night, a lot of large-power LED light bead dense arrangement be formed array as outdoor advertising, produce very large heat, have a strong impact on life-span and the stability of LED lamp pearl.Large-power LED light bead comprises bulb, lamp socket, both positive and negative polarity, its front is used for luminous, the back side (for the plane) is used for heat radiation, its operating temperature can not surpass 70 degree, the radiating mode of led array is generally at present: aluminium base is close at the back side of lamp pearl, the both positive and negative polarity of lamp pearl also inserts the electrode in the aluminium base, aluminium base links to each other with metal heat sink again, and (radiator can be made multiple shape, principle is that radiating surface is wanted greatly), the heat that the lamp pearl produces is delivered to aluminium base by the back side, be delivered to radiator by the aluminium base diffusion again, radiator is dissipated into heat in the atmosphere.But the radiator of good heat dissipation effect costs an arm and a leg usually, and owing to increase the requirement of radiating surface, so the volume and weight of radiator is all very big.Thermostat has been adopted in some place, cuts off the power supply automatically when spending when operating temperature surpasses 70, and with protection LED lamp pearl, also some is local even use air-conditioning directly to blow facing to radiator to the LED of large tracts of land array, and with distributing of accelerated heat, cost is quite high.Even like this, radiator does not still satisfy the heat radiation requirement of intensive high-power LED array yet, and therefore, the cost of paying is to reduce lamp pearl arranging density, causes brightness not enough; Perhaps use the low common fluorescent tube of caloric value in a large number instead, increased power consumption greatly.Especially when common fluorescent lamp or high-power LED array are used in the lamp box, because lamp box itself seal, so radiating effect is more undesirable, has directly influenced life of product, and to the light fixture of the mistake cause thermal damage sealing because of lamp box, the cost of replacing can be higher.
Summary of the invention
The objective of the invention is to provide a kind of cost low, easy for installation, the life-span is long, the heat abstractor of the high-power LED array of good heat dissipation effect.Be applicable to that large-scale business market, school, workshop, outdoor advertising, bridge, tunnel etc. need high-brightness environment, its advantage is environmental protection and energy saving, the brightness height, and not directly heat radiation in air does not influence indoor and outdoor temperature.
The present invention is achieved in that the heat abstractor of high-power LED array, comprises radiator, it is characterized in that described radiator is made up of the heat-absorbing medium in radiating tube and the radiating tube, and described radiating tube comprises import, outlet and contact plane.
Radiating tube can be plastic tube or metal tube, and details are as follows:
When adopting plastic tube, because the poor thermal conductivity of plastic tube own, so need on plastic tube, hole in the place of corresponding LED lamp pearl, the density in hole is decided on the arranging density of LED lamp pearl, insert metallic screw (the preferably flat head screw of a word) then, the tip of screw does not pass the opposite side (being the diameter of the length of screw less than plastic tube) of plastic tube, the diameter in hole less than the diameter of shank of screw to reach sealing effectiveness, at this moment, the head of screw can be used as contact plane, LED lamp pearl is close to is fixed on this contact plane, the heat that the lamp pearl produces just can be delivered in the heat-absorbing medium in the plastic tube by metallic screw.
When adopting metal tube, guarantee metal tube have at least one side for the plane as contact plane, to settle LED lamp pearl, its cross section also can be triangle or quadrangle or polygon.The back side of LED lamp pearl directly is close on the contact plane that is fixed on metal tube, and the heat that the lamp pearl produces just can be delivered in the heat-absorbing medium in the metal tube by metal tube.
LED lamp pearl and radiating tube contact plane are generally taked mode bonding or welding, and the lamp pearl back side and contact plane are close to, to guarantee heat-transfer effect.
Described heat-absorbing medium is generally water, also can be oil or other heat absorption liquid, is that heat-absorbing medium absorbs the heat that LED produced when luminous and directly effectively heat taken away with the method that flows in principle, thereby reaches the cooling purpose.Heat-absorbing medium enters from the import of radiating tube, from coming out, can constantly replenish, and also can recycle.Constantly the situation of replenishing is: the import of radiating tube is linked to each other with running water pipe, and outlet links to each other with tap, and the hot water that tap comes out can be used for daily life.Situation about recycling is: the import of radiating tube with go out the interruption-forming closed system, after heat-absorbing medium is taken away lamp pearl heat,, return lamp pearl position through behind the circulating path cooling heat dissipation, constantly heat is constantly taken away in circulation; Its circulation power can be provided by electric pump.Recycle more economize on resources cost and dependence to external world, be applicable to the work condition environment of highly dense high-power LED array.
LED lamp pearl can serial or parallel connection on radiating tube, heat-absorbing medium is taken away the heat that LED lamp pearl produces continuously, after tested, led array illuminator temperature in the present invention decides can not surpass local normal temperature (generally between the 10-26 degree, winter is lower) generally speaking according to local weather temperature.In particular cases, the radiating tube of large-area led array illuminator can directly spray cooling with running water, and cooling is reclaimed recirculation and used.
In addition, can also near the position of illuminator temperature-sensing element be set in the outlet of radiating tube, the flow size by the control heat-absorbing medium reaches constant temperature and purpose of energy saving more.
Owing to the plasticity of plastics and metal, radiating tube can be made the intercommunicating container of arbitrary shape, make led array produce various style moulding, as direct formation literal (enterprise name) or pattern (trade mark), make the present invention that more vast market prospect arranged.
In sum, the present invention is owing to saved aluminium base, radiator, thermostat and air-conditioning, saved cost (comparing saving 70% cost with monomer LED light fixture equal conditions on the market) greatly, and significantly reduced the volume and weight of illuminator, be more conducive to install and maintenance, because of being dispels the heat in pipe rather than dispels the heat in air, even in the lamp box of sealing, use, cooling-down effect is also unaffected, simultaneously, the use of highly denser more large-scale led array illuminator is become a reality, so the present invention is that a kind of cost is low, easy for installation, life-span long (can reach the theoretical value of LED lamp pearl luminescent lifetime), pollution-free, the heat abstractor of the high-power LED array of good heat dissipation effect.
Description of drawings
Fig. 1 is the structural representation of LED lamp pearl;
Fig. 2 is the general structure schematic diagram of the embodiment of the invention one (plastic tube);
Fig. 3 is the general structure schematic diagram of the embodiment of the invention two (metal tube);
Among the figure:
1, the lamp pearl; 2, bulb; 3, lamp socket; 4, both positive and negative polarity; 5, plastic tube; 6, the hole;
7, screw; 8, heat-absorbing medium; 9, import; 10, outlet; 11, metal tube;
12, contact plane.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and exemplary embodiments.
The present invention is the heat abstractor of high-power LED array, and as shown in Figure 1, LED lamp pearl 1 comprises bulb 2, lamp socket 3, both positive and negative polarity 4, and its front is used for luminous, and the back side is used for heat radiation; And the heat abstractor of forming by the heat-absorbing medium in radiating tube and the radiating tube 8, described radiating tube comprises import 9, outlet 10 and contact plane 12.
Radiating tube can be plastic tube or metal tube, as shown in Figure 2, when embodiment one adopts plastic tube 5, the place of corresponding LED lamp pearl boring 6 on plastic tube 5, the density in hole 6 is decided on the arranging density of lamp pearl 1, insert metallic screw 7 then, the tip of screw 7 does not pass the opposite side of plastic tube 5, the diameter in hole 6 less than the diameter of shank of screw to reach sealing effectiveness, at this moment, the head of screw is as contact plane 12, lamp pearl 1 is close to be fixed on this contact plane 12, and the heat that lamp pearl 1 produces just can be delivered in the interior heat-absorbing medium 8 of plastic tube 5 by screw 7.
Institute is shown in Figure 3, when embodiment two adopts metal tubes 11, described metal tube 11 have at least one side for the plane as contact plane 12, to settle lamp pearl 1, its cross section also can be triangle or polygon.The back side of lamp pearl 1 directly is close on the contact plane 12 that is fixed on metal tube 11, and the heat that the lamp pearl produces just can be delivered in the interior heat-absorbing medium 8 of metal tube 11 by metal tube 11.
Heat-absorbing medium 8 is generally water, also can be oil or other heat absorption liquid, is flowable in principle.Heat-absorbing medium 8 enters from the import 9 of radiating tube, comes out from exporting 10, can constantly replenish, and also can recycle.Constantly the situation of replenishing is: the import 9 of radiating tube is linked to each other with running water pipe, export 10 and link to each other with tap, the hot water that tap comes out can be used for daily life.Situation about recycling is: the import 9 of radiating tube forms closed system with outlet 10, after heat-absorbing medium 8 is taken away lamp pearl 1 heat, through the circulating path heat radiation, returns lamp pearl position, and constantly heat is constantly taken away in circulation.
Claims (8)
1. the heat abstractor of high-power LED array comprises radiator, it is characterized in that described radiator is made up of the heat-absorbing medium in radiating tube and the radiating tube, and described radiating tube comprises import, outlet and contact plane.
2. heat abstractor as claimed in claim 1 is characterized in that described radiating tube is a plastic tube, and plastic tube is porose, and metallic screw inserts in the hole, and the diameter in described hole is less than the screw diameter of metallic screw.
3. heat abstractor as claimed in claim 1 is characterized in that described radiating tube is a metal tube, and described metal tube has at least one side to be the plane.
4. the cross section of metal tube as claimed in claim 3 is triangle or quadrangle or polygon.
5. heat abstractor as claimed in claim 1 is characterized in that the contact plane of LED lamp pearl and radiating tube is close to, and takes mode bonding or welding.
6. heat abstractor as claimed in claim 1 is characterized in that described heat-absorbing medium is water or oil.
7. heat abstractor as claimed in claim 1 is characterized in that the import of described radiating tube does not link to each other with outlet.
8. heat abstractor as claimed in claim 1 is characterized in that the import of described radiating tube and outlet connect into closed cycle system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102029087A CN102278727A (en) | 2011-07-18 | 2011-07-18 | Heat radiation device of high-power LED (light emitting diode) array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102029087A CN102278727A (en) | 2011-07-18 | 2011-07-18 | Heat radiation device of high-power LED (light emitting diode) array |
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| CN102278727A true CN102278727A (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102029087A Pending CN102278727A (en) | 2011-07-18 | 2011-07-18 | Heat radiation device of high-power LED (light emitting diode) array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913882A (en) * | 2012-07-10 | 2013-02-06 | 杨胜文 | LED (Light-Emitting Diode) lamp cooling equipment |
| CN105161009A (en) * | 2015-07-16 | 2015-12-16 | 江苏嘉德光电科技有限公司 | Surface-mounted indoor single/double-color unit plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608788A (en) * | 2009-07-21 | 2009-12-23 | 史杰 | The LED lamp adopts the heat radiation device for loop heat pipe of enhanced evaporation section |
| CN101813275A (en) * | 2010-05-06 | 2010-08-25 | 上海大学 | High power LED street lamp with high heat dispersion |
| CN202177075U (en) * | 2011-07-18 | 2012-03-28 | 杨胜文 | Radiating device of large-power light-emitting diode (LED) array |
-
2011
- 2011-07-18 CN CN2011102029087A patent/CN102278727A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608788A (en) * | 2009-07-21 | 2009-12-23 | 史杰 | The LED lamp adopts the heat radiation device for loop heat pipe of enhanced evaporation section |
| CN101813275A (en) * | 2010-05-06 | 2010-08-25 | 上海大学 | High power LED street lamp with high heat dispersion |
| CN202177075U (en) * | 2011-07-18 | 2012-03-28 | 杨胜文 | Radiating device of large-power light-emitting diode (LED) array |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913882A (en) * | 2012-07-10 | 2013-02-06 | 杨胜文 | LED (Light-Emitting Diode) lamp cooling equipment |
| CN105161009A (en) * | 2015-07-16 | 2015-12-16 | 江苏嘉德光电科技有限公司 | Surface-mounted indoor single/double-color unit plate |
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Application publication date: 20111214 |