CN103292280A - Heat-dissipating device for light-emitting diode (LED) lamp - Google Patents
Heat-dissipating device for light-emitting diode (LED) lamp Download PDFInfo
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- CN103292280A CN103292280A CN2012100505261A CN201210050526A CN103292280A CN 103292280 A CN103292280 A CN 103292280A CN 2012100505261 A CN2012100505261 A CN 2012100505261A CN 201210050526 A CN201210050526 A CN 201210050526A CN 103292280 A CN103292280 A CN 103292280A
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- led lamp
- heat
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- heat abstractor
- rotating shaft
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Abstract
The invention provides a heat-dissipating device for a light-emitting diode (LED) lamp. The heat-dissipating device comprises a shell, a stator part and a rotor part, wherein the stator part and the rotor part are accommodated in the shell; the rotor part comprises a rotating shaft and a blade part; the LED lamp is arranged on the rotor part, so that the LED lamp can rotate together with the rotor part; and the rotating shaft and the blade part are made of heat-conductive materials (such as metal materials). The heat-dissipating device has double effects of passive heat dissipation and active heat dissipation, and is particularly applicable to occasions that heat dissipation is performed on the high-power LED in a narrow space or occasions that the weight of the LED heat-dissipating device is strictly limited.
Description
Technical field
The present invention relates to a kind of electronic radiation device, especially relate to a kind of heat abstractor for the LED lamp.
Background technology
LED is because to use lower electric weight just can carry out luminous, thus gradually popularization and application in produce and life in various aspects.Yet though LED has the advantage of low power consumption, LED exists the too high shortcoming of serviceability temperature in the use.As everyone knows, in LED illumination, be subjected to the restriction of existing chip technology, 85% of the power of driving LED all can be converted into heat energy, has only 15% power to be converted into luminous energy.The temperature of LED is extremely responsive, and the temperature of LED directly influences life-span and the optical property of LED, and temperature is more high, and the life-span of LED is more short, and light output is more little.Therefore, the design of radiator structure is most important in the design of LED lamp.This radiator structure is called as radiator, and the heat-sinking capability of radiator is directly proportional with its area of dissipation.
In the prior art, be extensive use of by the dissipate passive heat dissipation technology of the heat energy that thermal source produces of fin, radiating tube.In this passive heat dissipation technology, the area of dissipation that contacts with air by the increase pyrotoxin reaches the purpose that reduces thermal resistance, improves radiating efficiency.The limitation of this radiating mode is that the volume of radiator and weight are directly proportional with the power of thermal source, thus under the application scenario that needs portable set etc., can make the volume of entire equipment excessive, preponderance etc.
Another kind of traditional radiating mode is to use the fan of rotation to blow the thermal source ambient air, reaches the purpose of heat radiation by the convection current of air.This radiating mode requires thermal source itself to have enough area of dissipations, and will separate with fan, and must have suitable air channel between thermal source and the fan so that air can convection current.This radiating mode still has makes the bigger defective of volume ratio of cooling system.
Obviously, existing radiating mode can not be applicable to the situation (for example Portable LED lighting apparatus, flashlight, camping lamp etc.) of in small space especially high-power LED being dispelled the heat, the situation that perhaps weight of LED heat abstractor is had strict restriction, for example automotive lighting (needing its weight the smaller the better for fuel-efficient purpose).
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of modular device for the LED lamp.This heat abstractor adopts the structure of active heat removal and passive heat radiation, be specially adapted to the occasion of in small space, high-power LED being dispelled the heat, for example Portable LED lighting apparatus, flashlight, camping lamp etc., the occasion that perhaps weight of LED heat abstractor is had strict restriction, for example automotive lighting etc.
Therefore, the invention provides a kind of heat abstractor, it adopts the mode of active heat removal and passive heat radiation simultaneously.In this heat abstractor, the LED lamp is set directly at by on the heat conducting material rotor portion that for example metal, thermal conductive ceramic or heat-conducting plastic are made, like this, just make rotor portion itself play to increase area of dissipation with the effect of the passive radiator that carries out heat loss through conduction, when rotor portion rotates, can utilize the air-flow that flows through rotor portion the LED lamp to be carried out the active heat removal of heat loss through convection mode simultaneously.Because thermal source (LED lamp) combines with rotor portion, therefore can realize cooling system design littler than prior art volume and that efficient is higher for equal power of heat source.
Particularly, according to the present invention, a kind of heat abstractor for the LED lamp is provided, described heat abstractor comprises shell, stationary part and rotor portion, described stationary part and described rotor portion are contained in the described shell, and described rotor portion comprises rotating shaft and blade part, it is characterized in that, the LED lamp is arranged on the described rotor portion, makes described LED lamp to rotate with described rotor portion.
In one embodiment, the blade part of rotor portion is formed by heat conducting material, and the LED lamp is arranged on the described blade part, thereby the LED lamp can rotate with blade part.
Preferably, described heat conducting material can be heat-conducting plastic, thermal conductive ceramic material or metal material, and described thermal conductive ceramic material is for example oxide base cermet or carbide-base ceramics, and described metal material is aluminium or copper preferably.Preferably, blade part and rotating shaft are permanently connected together or form.
In another embodiment, the rotating shaft of rotor portion is formed by heat conducting material, and the LED lamp is arranged in the described rotating shaft, and blade part and rotating shaft are permanently connected together or form, thereby the LED lamp can rotate with described rotating shaft and blade part.The heat conducting material of described rotating shaft is preferably heat-conducting plastic, thermal conductive ceramic material or metal material, and described thermal conductive ceramic material is for example oxide base cermet or carbide-base ceramics, and described metal material is aluminium or copper preferably.
Selectively, as required, the LED lamp can be separately positioned in the rotating shaft and blade part of rotor portion.
Preferably, rotor portion and stationary part are electrically connected by the conduction brush, are used for providing electric energy to the LED lamp.Preferably, an end of described conduction brush and conductive plate on being arranged on stationary part carry out other dynamo-electric connection of contact contact or any appropriate, the other end be arranged on rectifier bridge on the rotor portion and pile and be electrically connected.
Preferably, the LED lamp (FPCB) is fixed in the rotating shaft or blade part of rotor portion by flexible PCB (printed circuit board (PCB)) with relevant electronic component (for example rectifier bridge heap etc.).
Preferably, be formed with metal base PCB (MCPCB) at the metal material of rotor portion, the LED lamp is fixed in the rotating shaft or blade part of described rotor portion by described metal base PCB with relevant electronic component (for example rectifier bridge heap etc.).
At the heat abstractor for the LED lamp of the present invention, the speed of rotor portion requires the observed frequency greater than human eye, namely greater than about 50HZ, thereby can eliminate the luminous point exercise effect that produces owing to the rotation of LED lamp.
Compared with prior art, adopt technique scheme, heat abstractor of the present invention is specially adapted to the occasion of in small space high-power LED being dispelled the heat, for example Portable LED lighting apparatus, flashlight, camping lamp etc., the occasion that perhaps weight of LED heat abstractor is had strict restriction, for example automotive lighting.
Description of drawings
Below in conjunction with concrete embodiment, and with reference to accompanying drawing, the above-mentioned of embodiment of the present invention and other purpose and advantage are further described.By reading following explanation, it is clearer that the present invention will become.In the accompanying drawings, identical or corresponding technical characterictic or parts adopt identical or corresponding Reference numeral to represent, in the accompanying drawings:
Fig. 1 has shown that first embodiment of the invention is used for the heat abstractor of LED lamp, and Fig. 1 (a) has shown the perspective view of this heat abstractor, and Fig. 1 (b) has shown the vertical view of this heat abstractor, and wherein, the LED lamp is arranged on the blade part of rotor portion;
Fig. 2 has shown in heat abstractor of the present invention, the schematic diagram of the syndeton between stationary part, rotor portion and the LED lamp;
Fig. 3 has shown that the LED lamp is arranged on the schematic diagram of the mode on the rotor portion;
Fig. 4 has shown that the LED lamp is arranged on the schematic diagram of the another way on the rotor portion;
Fig. 5 is the electronic block diagrams that has shown cooling system of the present invention;
Fig. 6 has shown the heat abstractor that is used for the LED lamp second embodiment of the invention, and Fig. 6 (a) has shown the perspective view of this heat abstractor, and Fig. 6 (b) has shown the vertical view of this heat abstractor, and wherein the LED lamp is arranged in the rotating shaft of rotor portion.
The specific embodiment
Below provide the various specific embodiment of the present invention, these embodiments only are used for that the present invention is described in detail, and should not be construed as limitation of the invention.
As depicted in figs. 1 and 2, show the heat abstractor that is used for the LED lamp of first embodiment of the invention.In this heat abstractor, it comprises shell 1, stationary part 4 and rotor portion 8, and stationary part 4 and rotor portion 8 are contained in the shell 1.Rotor portion 8 comprises rotating shaft 7 and blade part 2.LED lamp 3 is arranged on the blade part 2 of rotor portion 8, thereby LED lamp 3 can be with blade part 2 rotation, as among Fig. 1 (a) and Fig. 1 (b) clearly shown in.
The blade part 2 of rotor portion 8 is formed by heat conducting material, described heat conducting material can be heat-conducting plastic, thermal conductive ceramic material or metal material, described thermal conductive ceramic material for example is oxide base cermet or carbide-base ceramics, and described metal material is aluminium or copper preferably.Because LED lamp 3 is connected with blade part 2 heat conduction ground, therefore, blade part 2 has increased area of dissipation, plays the effect of radiator, the heat that is produced by the LED lamp can be dissipated away by blade part 2 by heat conducting mode, thereby has produced the passive radiating effect of heat loss through conduction.Simultaneously, when blade part 2 rotations, produce air and flow, therefore also the dissipation of heat that is produced by the LED lamp can be gone out by the mode of convection current.So just realized the double effects of passive heat radiation and active heat removal.
Should be understood that though the blade part 2 of rotor portion shown in Figure 18 is separated components with rotating shaft 7, they also can form as one, shown in the structure among Fig. 2.Need to prove that Fig. 2 is only used for schematically illustrating design of the present invention, not strict structure corresponding to Fig. 1, for example in Fig. 2, the structural relation between the quantity of blade part 2, blade part 2 and the rotating shaft 7 etc. all schematically shows.In fact, be under the situation of separated components at blade part 2 with rotating shaft 7, it is fixing that rotating shaft 7 can keep, and have only blade part 2 rotations.And are separated components in blade part 2 and rotating shaft 7 but link together that perhaps under the situation that blade part 2 and rotating shaft 7 form as one, they rotate together.Fig. 6 has shown that blade part 2 and rotating shaft 7 form as one, and LED lamp 3 is arranged on another embodiment in the rotating shaft 7.
As shown in Figure 2, stationary part 4 is provided with conductive plate 5, and this conductive plate 5 is used for the driving output of the positive and negative electrode of LED lamp.The structure of this conductive plate 5 is two semicircle conductive plates around stationary part 4, and they correspond respectively to the positive and negative electrode voltage end of led drive circuit.This semicircular structure is used for forming dynamo-electric the connection between them when brush rotates along with rotor portion.Above stationary part 4, have stator core 6, be used for driving the rotation of rotor portion 8, on stationary part 4, also be provided with the electronic drive circuit for the LED lamp in addition, as shown in Figure 5.
Rotor portion 8 is electrically connected by conduction brush 9 with stationary part 4, is used for providing electric energy to the LED lamp.One end of conduction brush 9 and conductive plate 5 on the stationary part 4 carry out the contact contact or arbitrarily the electromechanics of other kinds be connected, the rectifier bridge on the other end and the rotor portion 8 is piled 10 and is electrically connected.Because blade part 2 can make the direction by the voltage of conduction brush 9 conduction constantly change when rotating, therefore above-mentioned rectifier bridge heap 10 need be set, and the effect of this rectifier bridge heap 10 is to be choppy bidirectional, dc current commutates the unidirectional direct-current that is suitable for the work of LED lamp.
The rotating shaft 7 of rotor portion 8 is used for the rotation of supporting blade parts 2.This rotating shaft 7 simultaneously is the other electron component on the supporting rotor part also, for example rectifier bridge heap 10 etc.Certainly, under LED lamp 3 hot situations about being arranged in the rotating shaft 7, rotating shaft 7 itself also can be played the effect of the radiator that serves as LED lamp 3 with conducting, and as at embodiment shown in Figure 6, this will be described in detail hereinafter.
With reference now to Fig. 3,, Fig. 3 schematically shown and a kind of the LED lamp has been arranged on mode on the rotor portion, and wherein, LED lamp 3 and relevant electronic component (for example rectifier bridge heap etc.) (FPCB) are arranged on the blade part 2 by flexible PCB (printed circuit board (PCB)).Particularly, in Fig. 3, LED lamp 3 by welding medium 13, for example weld tin cream and be attached on the flexible PCB plate 11, this flexible PCB plate 11 is attached on the blade part 2 by heat conduction viscose glue 12 then, thereby finishes the setting between LED lamp and the rotor portion.Between LED lamp 3 and blade part 2, can carry out the heat conduction.
Fig. 4 has schematically shown the LED lamp has been arranged on another kind of mode on the rotor portion.This mode is different from the attached mode of employing flexible PCB among Fig. 3, but directly the metal material of blade part 2 is made the structure of metal base PCB (MCPCB), as shown in Figure 4, this metal base PCB (MCPCB) structure comprises conductive layer 14, insulation mucigel 15 and blade part 2, then by welding medium 13, for example weld tin cream LED lamp 3 be attached on this metal base PCB (MCPCB) structure, thereby finish setting between LED lamp and the rotor portion.Between LED lamp 3 and blade part 2, can carry out the heat conduction.
In application, the speed of blade part 2 only requires greater than the eye-observation frequency, namely greater than about 50HZ, just can eliminate the luminous point exercise effect that the rotation owing to LED produces.
Fig. 5 has shown the electronic block diagrams of cooling system of the present invention, and this cooling system comprises for the standard drive circuit that drives rotor portion, the standard led drive circuit that is used for the driving LED lamp, brush connector (conductive plate and conduction brush etc.) and rectifier bridge heap etc.Owing to above be described, no longer repeat herein.
Adopt above-mentioned structure, in heat abstractor of the present invention, the thermal conductivity blade part of rotor portion has enlarged the area of dissipation (is as radiator) of LED lamp itself, convection action owing to air makes radiating effect further improve when rotating simultaneously, thereby has the dual radiating effect of active heat removal and passive heat radiation.Simultaneously, the conductive plate structure combining of conduction brush on stationary part solved the problem of obtaining electric energy when the LED lamp rotates with rotor portion from drive circuit, and compact on the structure.Therefore, this construction for heat radiating device of the present invention satisfies the high efficiency and heat radiation requirement of high-powered LED lamp and the requirement that the confined space is used.
Fig. 6 has shown the heat abstractor that is used for the LED lamp second embodiment of the invention, and wherein, Fig. 6 (a) has shown the perspective view of this heat abstractor, and Fig. 6 (b) has shown the vertical view of this heat abstractor.In this second embodiment, mainly be with the first embodiment difference: LED lamp 3 is arranged in the rotating shaft 7 of rotor portion 8, rather than is arranged on the blade part 2.
In this second embodiment, the rotating shaft 7 of rotor portion 8 is formed by heat conducting material, LED lamp 3 is arranged in the rotating shaft 7, and blade part 2 is permanently connected together with rotating shaft 7 or forms (as shown in Figure 2), thereby LED lamp 3 can be with rotating shaft 7 and blade part 2 rotations.The heat conducting material of described rotating shaft 7 can be heat-conducting plastic, thermal conductive ceramic material or metal material, and described thermal conductive ceramic material for example is oxide base cermet or carbide-base ceramics, and described metal material is aluminium or copper preferably.
In this second embodiment, another difference with first embodiment is: LED lamp 3 and relevant electronic component (for example rectifier bridge heap etc.) are set in the rotating shaft 7 by flexible PCB (FPCB), rather than be arranged on the blade part 2, set-up mode is similar to the mode among Fig. 3, no longer is repeated in this description herein.Correspondingly, be similar to Fig. 4, in this second embodiment, can not adopt the mode of flexible PCB, but directly the metal material of rotating shaft 7 is manufactured the structure of metal base PCB (MCPCB), then LED lamp 3 is attached on this metal base PCB (MCPCB) structure by welding medium 13 (for example welding tin cream), thereby finishes setting between LED lamp and the rotor portion, wherein this metal base PCB (MCPCB) structure comprises conductive layer 14, insulation mucigel 15 and rotating shaft 7.
Adopt the heat abstractor of second kind of embodiment, because blade part 2 is permanently connected together with rotating shaft 7 or forms, therefore, rotating shaft 7 is with blade part 2 rotations, and LED lamp 3 is with rotating shaft 7 rotations.Thereby the thermal conductivity rotating shaft has enlarged the area of dissipation (is as radiator) of LED lamp itself, and the convection action owing to air makes radiating effect further improve when rotating simultaneously, thereby has the dual radiating effect of active heat removal and passive heat radiation.That is to say, this heat abstractor have with first embodiment in the identical effect of heat abstractor.
In application, the speed of rotating shaft 7 (and blade part 2 coupled or one) only requires greater than the eye-observation frequency, namely greater than about 50HZ, just can eliminate the luminous point exercise effect that the rotation owing to LED produces.
In the 3rd embodiment of the present invention, as required, LED lamp 3 can be separately positioned in the rotating shaft 7 and blade part 2 of rotor portion 8.Other structure is identical with second embodiment with above-described first embodiment with means for attachment, no longer repeats.
Should be understood that, in inventive concept of the present invention, especially in above-mentioned first, second, third embodiment, rotating shaft 7 and the blade part 2 of rotor portion 8 can be formed by identical materials, and can form as one, perhaps form separated components, perhaps combine, and the LED lamp can be arranged on rotating shaft 7, blade part 2 or the two individually.Can carry out any combination and variation between above-mentioned these technology essential factors, the technical scheme that obtains can both realize purpose of the present invention, produces beneficial technical effects.
Although illustrated and described above-mentioned preferred embodiment of the present invention; but it should be appreciated by those skilled in the art; according to designing requirement and other factors; can carry out various modifications, modification and combination to the present invention, and not break away from spirit and the protection domain of claim of the present invention.
Claims (12)
1. heat abstractor that is used for the LED lamp, described heat abstractor comprises shell, stationary part and rotor portion, described stationary part and described rotor portion are contained in the described shell, described rotor portion comprises rotating shaft and blade part, it is characterized in that, the LED lamp is arranged on the described rotor portion, makes described LED lamp to rotate with described rotor portion.
2. the heat abstractor for the LED lamp according to claim 1, it is characterized in that: the described blade part of described rotor portion is formed by heat conducting material, described LED lamp is arranged on the described blade part, thereby described LED lamp can rotate with described blade part.
3. the heat abstractor for the LED lamp according to claim 2, it is characterized in that: described heat conducting material is heat-conducting plastic or thermal conductive ceramic material, and described thermal conductive ceramic material is for example oxide base cermet or carbide-base ceramics.
4. the heat abstractor for the LED lamp according to claim 2, it is characterized in that: described heat conducting material is metal material, preferably aluminium or copper.
5. according to each the described heat abstractor for the LED lamp among the claim 1-4, it is characterized in that: the described rotating shaft of described rotor portion is formed by heat conducting material, described LED lamp is arranged in the described rotating shaft, described blade part and described rotating shaft are permanently connected together or form, thereby described LED lamp can rotate with described rotating shaft and described blade part.
6. the heat abstractor for the LED lamp according to claim 5, it is characterized in that: described heat conducting material is heat-conducting plastic or thermal conductive ceramic material, and described thermal conductive ceramic material is for example oxide base cermet or carbide-base ceramics.
7. the heat abstractor for the LED lamp according to claim 5, it is characterized in that: described heat conducting material is metal material, preferably aluminium or copper.
8. according to each the described heat abstractor for the LED lamp among the claim 1-7, it is characterized in that: described rotor portion and described stationary part are electrically connected by the conduction brush, are used for providing electric energy to described LED lamp.
9. the heat abstractor for the LED lamp according to claim 8, it is characterized in that: an end of described conduction brush carries out the contact contact with conductive plate on being arranged on described stationary part or other suitable electromechanics is connected, the other end be arranged on rectifier bridge on the described rotor portion and pile and be electrically connected.
10. according to each the described heat abstractor for the LED lamp among the claim 1-9, it is characterized in that: described LED lamp is fixed on the described rotor portion by flexible PCB with relevant electronic component.
11. according to claim 4 or 7 described heat abstractors for the LED lamp, it is characterized in that: the metal material at described rotor portion is formed with metal base PCB, and described LED lamp is fixed on the described rotor portion by described metal base PCB with relevant electronic component.
12. according to each the described heat abstractor for the LED lamp among the claim 1-11, it is characterized in that: the speed of described rotor portion is greater than the observed frequency of human eye, namely greater than about 50HZ, thereby can eliminate the luminous point exercise effect that produces owing to described LED lamp rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050526.1A CN103292280B (en) | 2012-02-29 | 2012-02-29 | For the heat abstractor of LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050526.1A CN103292280B (en) | 2012-02-29 | 2012-02-29 | For the heat abstractor of LED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292280A true CN103292280A (en) | 2013-09-11 |
| CN103292280B CN103292280B (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210050526.1A Expired - Fee Related CN103292280B (en) | 2012-02-29 | 2012-02-29 | For the heat abstractor of LED |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302439A (en) * | 2017-09-05 | 2018-07-20 | 深圳市益科光电技术有限公司 | A kind of LED light and vehicle front lighting lamp assembly |
| CN111731840A (en) * | 2020-07-03 | 2020-10-02 | 江西益丰建设有限公司 | Multifunctional pipe conveying equipment for building construction |
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|---|---|---|---|---|
| CN101240803A (en) * | 2007-02-07 | 2008-08-13 | Nec照明株式会社 | Ceiling fan with rotary blade surface light |
| US20090323341A1 (en) * | 2007-06-28 | 2009-12-31 | Boundary Net, Incorporated | Convective cooling based lighting fixtures |
| CN201819059U (en) * | 2010-09-26 | 2011-05-04 | 李朝杯 | LED lamp capable of actively dissipating heat |
| CN202094459U (en) * | 2011-04-11 | 2011-12-28 | 杨伟平 | Rotary conducting module and LED lamp with same |
-
2012
- 2012-02-29 CN CN201210050526.1A patent/CN103292280B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240803A (en) * | 2007-02-07 | 2008-08-13 | Nec照明株式会社 | Ceiling fan with rotary blade surface light |
| US20090323341A1 (en) * | 2007-06-28 | 2009-12-31 | Boundary Net, Incorporated | Convective cooling based lighting fixtures |
| CN201819059U (en) * | 2010-09-26 | 2011-05-04 | 李朝杯 | LED lamp capable of actively dissipating heat |
| CN202094459U (en) * | 2011-04-11 | 2011-12-28 | 杨伟平 | Rotary conducting module and LED lamp with same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302439A (en) * | 2017-09-05 | 2018-07-20 | 深圳市益科光电技术有限公司 | A kind of LED light and vehicle front lighting lamp assembly |
| CN108302439B (en) * | 2017-09-05 | 2024-03-29 | 深圳市益科光电技术有限公司 | LED lamp and automobile headlamp assembly |
| CN111731840A (en) * | 2020-07-03 | 2020-10-02 | 江西益丰建设有限公司 | Multifunctional pipe conveying equipment for building construction |
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| Publication number | Publication date |
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| CN103292280B (en) | 2017-06-20 |
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