CN203615299U - Air-cooled radiator of LED lamp - Google Patents
Air-cooled radiator of LED lamp Download PDFInfo
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- CN203615299U CN203615299U CN201320811535.8U CN201320811535U CN203615299U CN 203615299 U CN203615299 U CN 203615299U CN 201320811535 U CN201320811535 U CN 201320811535U CN 203615299 U CN203615299 U CN 203615299U
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- fin
- air
- led lamp
- heat pipe
- radiator fan
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Abstract
The utility model discloses an air-cooled radiator of an LED lamp, and the air-cooled radiator of LED lamp comprises a radiator fan [2], a fin group, a copper substrate, and a heat conduction tube [6], wherein the airflow generated by the radiator fan passes through the radiating surface of the fin; the heat conduction tube is composed of a sealed copper tube and a heat carrier oil in the copper tube; one end of the heat conduction tube is contacted closely with the copper substrate [12] and the other end thereof passes through each fin in the fin group [4]; the tube wall is contacted with the fin closely. The air-cooled radiator of LED lamp is characterized in that the heat on the copper substrate is quickly transmitted to the fin according to the low heat resistance and large cross section of the heat conduction tube, so that the conduction velocity is much faster than the speed of the heat which is from one side of the fin connected with the copper substrate to most of the radiating surface of the fin. Compared with the present technology, the air-cooled radiator of LED lamp has the following advantage that the cooling velocity of the air-cooled radiator of LED lamp is higher than the cooling velocity the natural convection cooling by 3 to 4 times through actual test within the cooling time from the same temperature to the same temperature under the same power.
Description
Technical field
The utility model relates to a kind of air-cooled radiating device of LED lamp, especially the device of the heat transmission of the high-powered LED lamp to track lamp one class.
Background technology
LED lamp is because energy-efficient, working stability, life-span are long, pollution-free, and it is at urban look, road traffic, lighting of home, and the fields such as automobile, screen display are widely used, and market prospects are boundless.It is introduced that in input power, approximately 40%-50% Conversion of Energy is heat in LED illumination, if heat radiation will cause LED luminous efficiency to reduce not in time, even burn.Therefore the heat dissipation problem of LED, has become the technical bottleneck of high-power LED illumination.The low-power LED lamp of present 3-5W is all to adopt fin free convection cooling, but after the increase of output power, this type of cooling just can not adapt to the radiating requirements of LED, and especially at indoor high-power LED lighting system, heat radiation is difficult more.Then had fan forced heat radiation, but the obvious radiating effect of this measure is still deficiency, high-powered LED lamp obtains effectively cooling.At " present situation of illuminating LED novel cooling manner and development trend " (Liu Dong etc., " Shanxi architecture " the 39th the 12nd phase of volume, in April, 2013), " heat exchange of heat pipe is applied to the experimental study of high-power LED street lamp cooling system " (hook sunlight monarch etc., " illuminating engineering journal " the 23rd the 2nd phase of volume, in April, 2012) introduce some common technologies except above-mentioned two kinds of heat dissipation technologys, as the heat dissipation technology such as heat pipe, micro-structural, the integrated cooling technology of micro slot group composite phase change, heat pipe heat exchanger are introduced in addition.More someone has proposed thermoelectric cooling technology.
Heat pipe, micro-structural and thermoelectric cooling, all have the defect that cost is very high.The condition that described wind-cooling heat dissipating obtains rising in the progress of micro machine technology, the volume of radiator fan significantly dwindles.First wind-cooling heat dissipating is that a radiator fan is installed in LED lamp housing, and being secondly has heat exchanger that the heat of LED chip is transmitted in the air-flow that radiator fan causes, and heat exchanger is mainly copper base and the fins set that is connected with copper base.But because fins set is in order there to be certain area of dissipation, make cross section smaller, thereby its heat conduction amount is lower, can not promptly the heat on copper base be transmitted on whole fin, the area of dissipation of fin can not be effectively utilized.
Summary of the invention
For above-mentioned deficiency, technical problem to be solved in the utility model is how rapidly the heat on copper base to be transmitted on fin, thereby proposes a kind of radiating effect and can reach the air-cooled radiating device of the LED lamp that high-powered LED lamp heat radiation requires.
The air-cooled radiating device of the LED lamp that the utility model provides, comprises radiator fan, fins set and copper base, the radiating surface of the airflow passes fin that radiator fan produces; Also have heat pipe, heat pipe is made up of the heat medium oil in the copper pipe sealing and copper pipe, and heat pipe one end and copper base are closely affixed, and the other end passes the every a slice fin in fins set, and tube wall and fin are closely affixed.
The air-cooled radiating device of the LED lamp that the utility model provides, utilize the feature that heat pipe thermal resistance is low, cross section is large, heat on copper base is transmitted on fin rapidly, makes conduction of velocity greatly be transmitted to the speed of the most of radiating surface of fin faster than the side being connected with copper base from fin.Compared with prior art, through reality test, under equal-wattage, be cooled to the needed time of same temperature from same temperature, the utility model cooling velocity more cooling than free convection improves 3-4 times.
Described fins set is made up of single fin, porose on each fin, and fin is through and on heat pipe, forms fins set with hole.Compared with the fins set forming with grooving on whole block material with single fin composition fins set, can increase several times area of dissipation, greatly improve radiating efficiency; At next volume and the minimizing material usage that can dwindle heat exchanger of the situation that keeps area of dissipation.
There is flanging in the hole that described single fin is worn heat pipe, flanging height preferably with two single fins between distance identical so that the contact area of fin and heat pipe enough greatly with two single spacings of fin are located.
The thickness of described single fin is below 0.3mm.
On described single fin, also have locating hole and fastening structure, described locating hole is the aperture that has flanging, flanging height preferably with two single fins between distance identical; Described fastening structure is a part of turning back to another single fin in single fin limit, and this part through with two single fins between the identical length of distance turn back in backward, two single fins are interlocked.Locating hole and fastening structure had both made fins set neat, made again fins set form entirety, and uniform heat distributes, favourable heat radiation.
Described fin component is more than two, and a heat pipe of every group of fins set configuration, further increases heat pipe contraction in length, sectional area.
On described fin, between hole wall and heat conduction tube wall, fill with tin, generally adopt Reflow Soldering technology to fill, make both heat conductivilitys good.
On described copper base, have the groove identical with heat pipe side view, heat pipe is trapped in groove and fixes, and makes the contact-making surface between heat pipe and copper base larger.
Between described copper base and heat pipe, be connected with welding manner, make both heat conductivilitys good.
Described radiator fan is axial flow type radiator fan, and fins set radiating surface is arranged on the air intake passage of radiator fan, and the airflow direction that radiator fan produces points to copper base, to make full use of air cooling effect.
The air-cooled radiating device of the LED lamp that the utility model provides, also have temperature detect switch (TDS) one to be arranged on copper base, its operating temperature is starting fan temperature, the normally opened contact of temperature detect switch (TDS) one is connected on fan electromotor power line, in the time that copper base temperature is raised to start-up temperature, conducting fan power makes it begin to cool down work.
The air-cooled radiating device of the LED lamp that the utility model provides; also have temperature detect switch (TDS) two to be arranged on copper base; its operating temperature is security personnel's temperature; the normally-closed contact of temperature detect switch (TDS) one is connected on LED power line; in the time that copper base temperature is raised to start-up temperature, cuts off LED power supply and make it quit work to protect LED.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model one embodiment, and the A that Fig. 2 is Fig. 1---A is to cutaway view, in figure: 1-housing, 2-radiator fan, 3-fan base, 4-fins set, 5-jump ring, 6-heat pipe, 7-retainer plate, 8-diffuser, 9-reflector, 10-temperature detect switch (TDS), 11-LED, 12-copper base;
Fig. 3 is the front view of single fin, and Fig. 4 is B in Fig. 3---B is to cutaway view, in figure: the single fin of 40-, 41-wears the hole of heat pipe, 42-fastening structure, 43-locating hole.
The specific embodiment
1, as shown in Figure 1, 2, a LED illuminating lamp of installing in track lamp mode, power 35W.Have housing 1, diffuser 8, reflector 9, LED11, radiator fan 2, heat exchanger are installed in housing, with jump ring 5 and retainer plate 7, they are coaxially fixed in housing respectively at housing two ends, wherein LED forms with LED chip and substrate thereof.Described heat exchanger comprises through heat-conducting glue and is attached to the copper base 12 on LED substrate, and copper base posts the back side of LED substrate and played twice half slot.Separately have a fan base 3, fan base is a plate body part, and its one side rises has twice half slot, fan groove and the copper base later half circular groove that is harmonious to be combined into twice circular port.There are two heat pipes 6, heat pipe is made with closed at both ends after the filling heat medium oil of copper pipe (120 ℃ of Applicable temperatures), respectively be fixed in twice circular port with one end straight tube, fixing mode be with screw by fastening to fan base and copper base, thereby in heat pipe is pressed on.The heat pipe other end is by two sections of bend pipes that form, and one section is that another section of circular arc is the bending section that connects arc section and straight tube and arc section is directed to fan side.On arc section, cover has many single fins, and the shape and structure of single fin as shown in Figure 3,4.Single fin 40 is thickness aluminum alloy flakes at 0.3mm, fin face overlaps with the sagittal plane of light fixture, its shape is included in the main radiating surface of fan side, wears the hole 41 of heat pipe at the center of this main radiating surface, and the extension that is also included in fan base one side is at the bottom of the fins set of lamp axis.On single fin, except wearing the hole of heat pipe, also have locating hole 43, two holes to have flanging, also folding has fastening structure 42, and they turn up to the same side of fin, and turning up of two holes is highly the distance between two adjacent single fins in fins set.Owing to being that diametric plane is arranged, thus wear the hole of heat pipe turn up height as with locating hole turn up highly the same, last hole only as and heat pipe expand contact-making surface use, also can be by two of a place radius single spacing of fin design, the while can participate in locating.Fastening structure is arranged on outer most edge, shape is as the alphabetical Y of distortion, its two fork is connected in fin outer rim, turning up is highly two single spacings of fin of its place radius, and then extend a fin thickness and turn back (vertical part of alphabetical Y is divided) in backward, and fin has the breach of a thickness between two forks, buckle into hold another fastening structure.Do not establish fin at heat pipe bend loss, wearing after appropriate fin at heat conduction tube wall and wearing between the hole inwall of heat pipe and fill tin through reflow soldering process, make the single fin on every heat pipe form a fins set and combine closely with heat pipe.Two groups of fins set form bowl-shape after being installed in lamp, radiator fan is installed on the fan base in " bowl " end, makes it in " bowl ".Radiator fan adopts CPU radiator fan, and " bowl " limit that air-flow forms from " bowl " mouthful and main radiating surface sucks, and sensing copper base is also blown over from intermediate gap at the bottom of point fins set bottom " bowl ", blows out through reflector institute's perforate from retainer plate.
Two temperature detect switch (TDS)s 10 are installed in copper base side, one of them is connected on the power lead of radiator fan, its operating temperature is 50 ℃, in the time that the temperature of copper base meets or exceeds 50 ℃, radiator fan power turn-on and automatically start, implement to force cooling, and when copper base temperature during lower than 50 ℃ radiator fan automatically close, to save electric energy.Another is connected on the power lead of LED, and its operating temperature is 75 ℃, and in the time that copper base temperature meets or exceeds 75 ℃, lamp is closed automatically, when copper base temperature during lower than 70 ℃ lamp automatically open.
Be all two groups of LED lamps of 35W by power, one group adopts Natural Heat Convection, and another group adopts this routine heat abstractor to carry out actual test.The maximum temperature recording: the surface temperature of the former whole lamp is 75 ℃, LED chip junction temperature is 120 ℃, and the whole lamp surface temperature of the latter is 45 ℃, and chip junction temperature is 55 ℃.
2, wherein the formation of heat exchanger is: fins set used is to be processed to form by fine aluminium, is made up of inner tube and pipe inside and outside fin.Heat pipe used is 4 flat tubes, and their one end, with similar shape depression welding on a flat side and copper base, are through respectively pipe inner fin and pass the hole on interior tube portion and be through on the outer fin of pipe after other end bending.
Claims (10)
1. an air-cooled radiating device for LED lamp, comprises radiator fan, fins set and copper base, the radiating surface of the airflow passes fin that radiator fan produces; It is characterized in that in addition heat pipe, heat pipe is made up of the heat medium oil in the copper pipe sealing and copper pipe, and heat pipe one end and copper base are closely affixed, and the other end passes the every a slice fin in fins set, and tube wall and fin are closely affixed.
2. the air-cooled radiating device of LED lamp as claimed in claim 1, is characterized in that described fins set is made up of single fin, porose on each fin, and fin is through and on heat pipe, forms fins set with hole.
3. the air-cooled radiating device of LED lamp as claimed in claim 2, it is characterized in that there is flanging in the hole that described single fin is worn heat pipe, flanging height preferably with two single fins between distance identical so that the contact area of fin and heat pipe enough greatly with two single spacings of fin are located.
4. the air-cooled radiating device of LED lamp as claimed in claim 2, is characterized in that on described single fin also having locating hole and fastening structure, and described locating hole is the aperture that has flanging, flanging height preferably with two single fins between distance identical; Described fastening structure is a part of turning back to another single fin in single fin limit, and this part through with two single fins between the identical length of distance turn back in backward, two single fins are interlocked.
5. the air-cooled radiating device of LED lamp as claimed in claim 3, is characterized in that between hole wall and heat conduction tube wall, filling with tin on described fin.
6. the air-cooled radiating device of the LED lamp as described in claim 2 or 3 or 4 or 5, is characterized in that described fin component is more than two, a heat pipe of every group of fins set configuration.
7. the air-cooled radiating device of the LED lamp as described in claim 1 or 2 or 3 or 4 or 5, is characterized in that having the groove identical with heat pipe side view, heat pipe are trapped in groove and fix on described copper base.
8. the air-cooled radiating device of LED lamp as claimed in claim 6, is characterized in that having the groove identical with heat pipe side view, heat pipe are trapped in groove and fix on described copper base.
9. the air-cooled radiating device of the LED lamp as described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that described radiator fan is axial flow type radiator fan, fins set radiating surface is arranged on the air intake passage of radiator fan, and the airflow direction that radiator fan produces points to copper base.
10. the air-cooled radiating device of LED lamp as claimed in claim 6, is characterized in that described radiator fan is axial flow type radiator fan, and fins set radiating surface is arranged on the air intake passage of radiator fan, and the airflow direction that radiator fan produces points to copper base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811535.8U CN203615299U (en) | 2013-12-11 | 2013-12-11 | Air-cooled radiator of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811535.8U CN203615299U (en) | 2013-12-11 | 2013-12-11 | Air-cooled radiator of LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615299U true CN203615299U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320811535.8U Expired - Fee Related CN203615299U (en) | 2013-12-11 | 2013-12-11 | Air-cooled radiator of LED lamp |
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| CN (1) | CN203615299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644552A (en) * | 2013-12-11 | 2014-03-19 | 周安平 | Air cooling and radiating device of LED lamp |
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2013
- 2013-12-11 CN CN201320811535.8U patent/CN203615299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644552A (en) * | 2013-12-11 | 2014-03-19 | 周安平 | Air cooling and radiating device of LED lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20171211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |