CN203757673U - Plate-shaped heat pipe plug-in type high-power LED radiator - Google Patents

Plate-shaped heat pipe plug-in type high-power LED radiator Download PDF

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Publication number
CN203757673U
CN203757673U CN201420093302.3U CN201420093302U CN203757673U CN 203757673 U CN203757673 U CN 203757673U CN 201420093302 U CN201420093302 U CN 201420093302U CN 203757673 U CN203757673 U CN 203757673U
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China
Prior art keywords
heat pipe
platelike
power led
plate
platelike heat
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Expired - Lifetime
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CN201420093302.3U
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Chinese (zh)
Inventor
赵耀华
张楷荣
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Anhui Kunbo Zhixin Equity Investment Partnership LP
Hefeng Technology Co ltd
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Individual
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Abstract

The utility model relates to a plate-shaped heat pipe plug-in type high-power LED radiator. The LED radiator comprises a metal base plate and a plurality of plate-shaped heat pipes, the plate-shaped heat pipes are a plurality of mini-type independent heat pipe structural bodies formed by extruding or punching metal materials and arranged along a plate surface inside a heat dissipation plate side by side, and the side walls of the plate-shaped heat pipes are connected. The plate-shaped heat pipes are divided into evaporation sections and condensation sections in the axis direction of the mini-type independent heat pipes. The metal base plate comprises a heat source contact face and a heat pipe installing face, the heat source contact face makes contact with the heating faces of high-power LEDs, the heat pipe installing face is provided with a plurality of rows of inserting grooves with the side walls being planes, the inserting grooves are matched with the evaporation sections, the plate-shaped heat pipes are inserted into the inserting grooves through the evaporation sections to be fixed to the metal base plate, part of or all the plate faces of the evaporation sections are closely attached to the side walls of the inserting grooves, and the condensation sections are free plate faces making contact with air. According to the plate-shaped heat pipe plug-in type high-power LED radiator, the heat of the high-power LED with high integrity can be dissipated efficiently, and the LED radiator has the advantages of being small in size, light, simple in technology and flexible and convenient to install.

Description

Platelike heat pipe plug-in type high-power LED radiator
Technical field
The utility model relates to high-power heater members heat dissipation technology, particularly a kind of Platelike heat pipe plug-in type high-power LED radiator.
Background technology
Along with developing rapidly of LED technology, caloric value and the heat flow density of LED increase considerably, LED is a kind of high-power heater members, can produce a large amount of heat in the course of the work, when temperature raises, the efficiency of great power LED obviously declines, fault rate increases sharply, the lost of life, when the node temperature of great power LED is during higher than uniform temperature, device will be burned.Therefore, must be equipped with applicable radiator to reduce its operating temperature.
Prior art is dispelled the heat by liquid cooling technology or hot pipe technique conventionally, and liquid cooling system volume is large, and liquid cooling technology itself exists potential safety hazard, once leaking appears in liquid cooling system, will cause LED to damage.Hot pipe technique heat transfer efficiency is very high, but the manufacture craft of general heat pipe is very complicated, and general heat pipe is as little in circle heat pipe specific area, the contact area of single round heat pipe and electronic equipment heating face is very little, cause equivalent thermal resistance large, and the volume of single round heat pipe is larger, its condensation segment arranges radiating fin and has contact and the irrational defect of spacing.Also have the evaporator section of flat-plate heat pipe is contacted with the direct face of heating face of great power LED, its condensation segment is by thermal component such radiating mode that dispels the heat, as the patent No. is 200910080178.0, name is called the patent of invention of " for the radiator of LED and high-power heat-dissipation device ", this radiating mode for the LED heater members of the little or single setting of normally volume, particularly for the heat radiation of the LED heater members of specific installing space.After great power LED heater members integrated level improves, can leave the heat-dissipating space of this device for and also receive huge restriction, such as be gathered in the heat radiation of specific heat-dissipating space for the larger great power LED of volume ratio or a plurality of great power LED, technique scheme cannot reach the rapidly and efficiently effect of heat radiation.
Utility model content
The complex manufacturing technology that the utility model exists for existing high-power LED radiator, volume be large, in problems such as specific installing space application are restricted, a kind of Platelike heat pipe plug-in type high-power LED radiator is provided, can carry out high efficiency and heat radiation to the high great power LED of integrated level, promote its radiating efficiency, and have advantages of that volume is little, lightweight, cost is low, technique is simple and convenient and flexible installation.
The technical solution of the utility model is as follows:
A kind of Platelike heat pipe plug-in type high-power LED radiator, it is characterized in that, comprise metal substrate and Duo Gen Platelike heat pipe, described Platelike heat pipe is metal material through a plurality of miniature independent heat pipe structure body of extruding or stamping forming that be set up in parallel along plate face in heat sink, pipe sidewall interconnection; Described Platelike heat pipe is divided into evaporator section and condensation segment along the axis direction of described miniature independent heat pipe, described metal substrate comprises heat source-contacting surface and heat pipe installed surface, described heat source-contacting surface contacts with the heating face of great power LED, the slot that is provided with many row's sidewalls on described heat pipe installed surface and is plane, matches with described evaporator section, described Platelike heat pipe inserts slot by described evaporator section and is fixed on described metal substrate, part or all of plate face and the socket sidewalls of described evaporator section fits tightly, and described condensation segment is the free plate face contacting with air.
On the condensation segment of described Platelike heat pipe, be provided with radiating fin.
The thickness of described Platelike heat pipe is between 0.5mm to 10mm, and the equivalent diameter of described miniature independent heat pipe is between 0.1mm to 8mm time, and the length ratio of the length of described evaporator section and described Platelike heat pipe axis direction is 1:5 to 1:100000.
The thickness of described Platelike heat pipe is between 1mm to 4mm, and the equivalent diameter of described miniature independent heat pipe is between 0.3mm to 3mm time, and the length ratio of the length of described evaporator section and described Platelike heat pipe axis direction is 1:10 to 1:200.
The length ratio of the height of described slot and described Platelike heat pipe axis direction is 1:5 to 1:100000.
The length ratio of the height of described slot and described Platelike heat pipe axis direction is 1:10 to 1:200.
Described slot is uniformly distributed on metal substrate.
In a certain slot on described heat pipe installed surface, along flute length direction, be set up in parallel a plurality of described Platelike heat pipes.
After described high-power LED radiator assembling, above the above condensation segment of gravity direction is positioned at described evaporator section; Described Platelike heat pipe favours the setting of described heat pipe installed surface or Platelike heat pipe and is obliquely installed along the slot length direction of slot.
The material of described metal substrate and described Platelike heat pipe is aluminum or aluminum alloy.
Technique effect of the present utility model is as follows:
The utility model relates to a kind of Platelike heat pipe plug-in type high-power LED radiator, adopt Platelike heat pipe and metal substrate grafting technology to dispel the heat to great power LED, Platelike heat pipe is metal material through extruding or stamping formingly in heat sink, along plate face, is set up in parallel, a plurality of miniature independent heat pipe structure body of pipe sidewall interconnection, heat pipe contact-making surface and heat pipe installed surface are set on metal substrate, the slot that many rows sidewall by the evaporator section of many Platelike heat pipes by structure adaptation is plane is fixed on metal substrate, part or all of plate face and the socket sidewalls of evaporator section fits tightly, the heat of great power LED evenly conducts through metal substrate, heat transfers to many Platelike heat pipes that are plugged on metal substrate, by the evaporator section internal working medium evaporation endothermic of each Platelike heat pipe, absorbed the heat of great power LED, the condensation segment that working medium in each Platelike heat pipe enters to separately fast carries out condensation heat radiation, the heat of great power LED is distributed to rapidly in air, many Platelike heat pipes are worked simultaneously, can more rapidly and efficiently realize the effect of great power LED cooling.Because the contact area of many Platelike heat pipes and socket sidewalls is large, the area of dissipation of many Platelike heat pipes is large, and heat conduction is simultaneously fast, so the existing radiator of relatively same heat dissipation capacity, and volume is little, and radiating efficiency is high.Many Platelike heat pipe installation and removal are simple and convenient, more can carry out according to the demand of actual installation environment the flexible adjustment of the quantity of Platelike heat pipe, therefore, at heat output under large and this prerequisite of efficiency height, in the volume ratio prior art of the Platelike heat pipe of this Platelike heat pipe plug-in type high-power LED radiator, the volume of heat pipe is little, compact conformation, the overall volume of the utility model high-power LED radiator can be reduced, can adjust flexibly according to the requirement of installation environment, also be applicable to the high efficiency and heat radiation of the large or a plurality of great power LEDs of volume, the volume and weight of radiator all obviously reduces.
The utility model has substituted traditional round heat pipe of the prior art with Platelike heat pipe, with Platelike heat pipe, combine with the metal substrate of ad hoc structure, because the socket sidewalls of metal substrate is plane, the plate face of the evaporator section of Platelike heat pipe and the contact-making surface of socket sidewalls are larger, can guarantee transmission of heat by contact face, reduce thermal contact resistance, in Platelike heat pipe, unit volume hot working fluid conduction surface is large simultaneously, and because being pegs graft, its installation is very convenient and practical.Platelike heat pipe is owing to there being the specific area more much bigger than round heat pipe, and condensation segment can be directly and air heat-exchange, also can be in conjunction with traditional fin heat radiation, and fin efficiency is high, so this radiator has heat transfer efficiency rapidly and efficiently.Many Platelike heat pipes comparing this ad hoc structure of traditional round heat pipe that specific area is little have the advantages that specific area is large, so not just as conventional heat pipe plays conductive force, and mainly play to the effect of air heat radiation, because area of dissipation is large, therefore can not need on each Platelike heat pipe, fin to be set again, just can realize the function with the radiator heat-dissipation of the round heat pipe composition of fin, so the difficult obstruction of air flow channel.Many Platelike heat pipes can adopt lightweight metal material extruding to make, and compare existing copper coin heat pipe, not only lightweight, and cost is low, and technique is simple.Platelike heat pipe is miniature independent heat pipe structure body, even if certain micro heat pipe is damaged like this, as there is leakage, also can not affect the work of other micro heat pipe, improved reliability, and be convenient to security maintenance, if avoided a place to reveal the problem of the poor reliability that makes Platelike heat pipe global failure and caused, improved the security performance of the even whole high-power LED radiator of Platelike heat pipe.The pipe sidewall of Platelike heat pipe extruding or punch forming and miniature independent heat pipe interconnects, and has strengthened the anti-pressure ability of whole Platelike heat pipe, and not yielding under high-temperature condition, and has reduced the cost of Platelike heat pipe and whole radiator, has improved reliability.
Accompanying drawing explanation
Fig. 1 is the first preferred structure schematic diagram of the utility model Platelike heat pipe plug-in type high-power LED radiator.
Fig. 2 is the second preferred structure schematic diagram of the utility model Platelike heat pipe plug-in type high-power LED radiator.
Fig. 3 is the third preferred structure schematic diagram of the utility model Platelike heat pipe plug-in type high-power LED radiator.
Fig. 4 installs the structural representation of radiating fin additional on Platelike heat pipe.
In figure, each label lists as follows:
1-metal substrate; 11-heat pipe installed surface; 12-heat source-contacting surface; 13-slot; 2-Platelike heat pipe; 21-evaporator section; 22-condensation segment; 3-great power LED; 4-radiating fin.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described.
The utility model relates to a kind of Platelike heat pipe plug-in type high-power LED radiator, its the first preferred structure as shown in Figure 1, comprise metal substrate 1 and Duo Gen Platelike heat pipe 2, Platelike heat pipe 2 is for metal material is through extruding or stamping forming platy structure, this Platelike heat pipe 2 is set up in parallel along plate face in heat sink, a plurality of miniature independent heat pipe structure body of pipe sidewall interconnection, miniature independent heat pipe in Platelike heat pipe 2 is sealed tubular structure, wherein be provided with the working medium of phase-change heat-exchange effect, to aluminium sheet, the heat sink of the metal materials such as copper coin adopts punching press or extrusion process can obtain Platelike heat pipe 2 of the present utility model.Platelike heat pipe 2 is divided into evaporator section 21 and condensation segment 22 along the axis direction of described miniature independent heat pipe, metal substrate 1 in figure is analysed and observe, this metal substrate 1 is combined with thermal source, comprise heat source-contacting surface 12 and heat pipe installed surface 11, this heat source-contacting surface 12 and heat pipe installed surface 11 can be two plate faces parallel to each other, heat source-contacting surface 12 is for the heat conduction that contacts of the heating face of the great power LED heat generating components with label 3, on the heat pipe installed surface 11 of metal substrate 1, being provided with many row's sidewalls is plane, the slot 13 matching with described evaporator section 21 parts, Platelike heat pipe 2 inserts slot 13 by described evaporator section 21 and is fixed on described metal substrate 1, the plate face that evaporator section 21 is part or all of and the sidewall of slot 13 fit tightly, condensation segment 22 is the free plate face contacting with air.
Platelike heat pipe plug-in type high-power LED radiator of the present utility model contacts installation by the heat source-contacting surface 12 of metal substrate 1 with the heating face of great power LED, makes can carry out effectively heat conduction between the two.Indicate the heat of the one or more great power LED heater members shown in 3 through heat source-contacting surface 12 evenly conduction on metal substrate 1 of metal substrate 1, this heat conducts on the many Platelike heat pipes 2 of grafting by the slot 13 of heat pipe installed surface 11 settings of metal substrate 1, and then is transmitted to the evaporator section 21 of Platelike heat pipe 2.Many Platelike heat pipes 2 are worked simultaneously, the industry situation working medium evaporation endothermic of evaporator section 21 inside by each Platelike heat pipe 2, absorb the heat of having taken away great power LED, the condensation segment 22 that the working medium of each Platelike heat pipe 2 interior evaporations enters separately fast carries out condensation heat radiation, working medium condensation returns to liquid state, and the heat of great power LED is distributed to rapidly in air, so far heat is exported Platelike heat pipe.Condensed liquid refrigerant flow back into evaporator section, continues evaporator strip and walks heat, forms circulation.Great power LED cooling radiator described in the utility model, can not use the heat radiations such as fan to lose the cooling that just can realize great power LED.As shown in Figure 1, when the condensation segment 22 of Platelike heat pipe 2 is on gravity direction above evaporator section 21 time, liquid refrigerant flow back into the speed of evaporator section can be faster, is more conducive to improve the radiating efficiency of whole radiator.
Platelike heat pipe 2 in radiator described in the utility model is preferably micro heat pipe array heat pipe, ruler shape structure, its length direction is the axis direction of wherein said miniature independent heat pipe, on this axis direction, Platelike heat pipe 2 is divided into evaporator section 21 and condensation segment 22, the part that described evaporator section 21 refers to that Platelike heat pipe 2 inserts in heat pipe installed surface 11 the above slot 13 and fits tightly with slot 13 sidewalls, certainly near the outer Platelike heat pipe 2 of slot 13 may be also a part for evaporator section 21, the sidewall that is the part or all of plate face of evaporator section 21 and slot 13 fits tightly, described condensation segment 22 mainly refers to the part of Platelike heat pipe 2 outstanding metal substrates 1, or the part outside evaporator section 21, condensation segment 22 is the free plate face contacting with air.Preferably the thickness of Platelike heat pipe 2 is between 0.5mm to 10mm, and the equivalent diameter of miniature independent heat pipe is wherein between 0.1mm to 8mm time, and the length ratio of the length of the height of described slot 13 or evaporator section 21 and Platelike heat pipe 2 axis directions is 1:5 to 1:100000.Further preferably, the thickness of Platelike heat pipe 2 is between 1.0mm to 4mm, and the equivalent diameter of miniature independent heat pipe is between 0.3mm to 3mm time, and the length ratio of the length of the height of described slot 13 or evaporator section 21 and Platelike heat pipe 2 axis directions is 1:10 to 1:200.
Platelike heat pipe 2 shown in Fig. 1 in structure arranges perpendicular to heat pipe installed surface 11, certainly, this is not exclusive set-up mode also, Platelike heat pipe 2 also can be not orthogonal to heat pipe installed surface 11 and arrange, the second preferred structure schematic diagram of the utility model Platelike heat pipe plug-in type high-power LED radiator as shown in Figure 2, be from the different of structure shown in Fig. 1, Platelike heat pipe 2 in Fig. 2 favours heat pipe installed surface 11 and arranges, due to heat source-contacting surface 12 and heat pipe installed surface 11 parallel to each other, Platelike heat pipe 2 also favours heat source-contacting surface 12.This main purpose that is obliquely installed of Platelike heat pipe 2 is to make after radiator and great power LED laminating assembling, above the above condensation segment 22 of gravity direction is positioned at described evaporator section 21.What specify is, because the evaporator section 21 of Platelike heat pipe 2 is the slots 13 that insert on the heat pipe installed surface 11 of metal substrate 1, the plate face that Platelike heat pipe 2 tilts and its evaporator section 21 is part or all of and the sidewall of slot 13 fit tightly, the slot 13 arranging on heat pipe installed surface 11 is to mate with evaporator section 21, and slot 13 sidewalls are also the plane of corresponding inclination.
In addition to the implementation, the utility model Platelike heat pipe plug-in type high-power LED radiator can also be structure as shown in Figure 3, the tabular plane parallelogram of the Platelike heat pipe 2 shown in Fig. 3 in structure, the slot 13 arranging on metal substrate 1 is and heat source-contacting surface 12(or heat pipe installed surface 11) vertical plane, the slot 13 that the evaporator section 21 of Platelike heat pipe 2 inserts on heat pipe installed surface 11, and fit tightly with the sidewall of slot 13, the tabular plane of Platelike heat pipe 2 is vertical with heat pipe installed surface 11, be that Platelike heat pipe 2 is vertical with metal substrate 1, the left view of structure shown in Fig. 3 should be identical with Fig. 1 with right view, can be understood as is that the slot length direction along slot 13 tilts by the Platelike heat pipe of structure shown in Fig. 12.This set-up mode makes after radiator and great power LED laminating assembling, as metal substrate 1 is while vertically arranging, Platelike heat pipe 2 still can be certain angle of inclination along horizontal plane, condensation segment liquid refrigerant after condensation heat release of Platelike heat pipe 2 can be refluxed smoothly along gravity direction, strengthen the effect of heat pipe effect, improve the operating efficiency of radiator.
From Fig. 1 to Fig. 3, can see, on the heat pipe installed surface 11 of metal substrate 1, be provided with a plurality of Platelike heat pipes 2, between Platelike heat pipe 2, be arranged in parallel, form Platelike heat pipe array, to strengthen radiating effect.For making the heat of all great power LEDs evenly conduct to Platelike heat pipe 2 by metal substrate 1, slot 13 is preferably set to be uniformly distributed on metal substrate 1, also a certain slot 13 that can be on the heat pipe installed surface 11 of described metal substrate 1 is interior is set up in parallel a plurality of described Platelike heat pipes 2 along flute length direction, further to improve radiating efficiency.In preferred above-mentioned example, the material of Platelike heat pipe 2, metal substrate 1 can be selected aluminum or aluminum alloy, can strengthen radiating effect on the one hand, can further alleviate on the other hand the weight of radiator.
Certainly, Fig. 1 to Fig. 3 example illustrated can also install radiating fin 4 as shown in Figure 4 additional on Platelike heat pipe 2.Radiating fin 4 is installed on the condensation segment 22 of Platelike heat pipe 2, the radiating fin 4 installing additional adopts the metal foil fin of prior art can increase area of dissipation, improving radiating effect, also can suitably reduce the quantity of Platelike heat pipe 2, the radiating fin 4 in concrete employing Fig. 4.
Radiator of the present utility model is according to the characteristic of great power LED, metal substrate 1 and Platelike heat pipe 2 in conjunction with ad hoc structure, make the heat conduction of metal substrate 1 and the heat pipe effect of Platelike heat pipe 2 more rapidly with abundant, can make heat exchange even, reach the optimum state of the heat pipe effect of Platelike heat pipe 2, further improved the radiating efficiency of whole radiator, can significantly reduce volume and the weight of radiator, and reached and reduce the effect that volume takies.
It should be pointed out that the above specific embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore, although this description has been described in detail the invention with reference to drawings and Examples,, those skilled in the art are to be understood that, still can carry out to the structure of above-mentioned various parts the improvement of material and structure, or adopt technical equivalents thing to replace.Therefore the equivalent structure that all utilizations description of the present invention and diagramatic content are done changes, or directly or indirectly apply to other correlative technology fields and be all in like manner all contained in the scope that the present invention contains.

Claims (10)

1. a Platelike heat pipe plug-in type high-power LED radiator, it is characterized in that, comprise metal substrate and Duo Gen Platelike heat pipe, described Platelike heat pipe is metal material through a plurality of miniature independent heat pipe structure body of extruding or stamping forming that be set up in parallel along plate face in heat sink, pipe sidewall interconnection; Described Platelike heat pipe is divided into evaporator section and condensation segment along the axis direction of described miniature independent heat pipe, described metal substrate comprises heat source-contacting surface and heat pipe installed surface, described heat source-contacting surface contacts with the heating face of great power LED, the slot that is provided with many row's sidewalls on described heat pipe installed surface and is plane, matches with described evaporator section, described Platelike heat pipe inserts slot by described evaporator section and is fixed on described metal substrate, part or all of plate face and the socket sidewalls of described evaporator section fits tightly, and described condensation segment is the free plate face contacting with air.
2. Platelike heat pipe plug-in type high-power LED radiator according to claim 1, is characterized in that, on the condensation segment of described Platelike heat pipe, is provided with radiating fin.
3. Platelike heat pipe plug-in type high-power LED radiator according to claim 1 and 2, it is characterized in that, the thickness of described Platelike heat pipe is between 0.5mm to 10mm, and the equivalent diameter of described miniature independent heat pipe is between 0.1mm to 8mm time, and the length ratio of the length of described evaporator section and described Platelike heat pipe axis direction is 1:5 to 1:100000.
4. Platelike heat pipe plug-in type high-power LED radiator according to claim 3, it is characterized in that, the thickness of described Platelike heat pipe is between 1mm to 4mm, and the equivalent diameter of described miniature independent heat pipe is between 0.3mm to 3mm time, and the length ratio of the length of described evaporator section and described Platelike heat pipe axis direction is 1:10 to 1:200.
5. Platelike heat pipe plug-in type high-power LED radiator according to claim 3, is characterized in that, the length ratio of the height of described slot and described Platelike heat pipe axis direction is 1:5 to 1:100000.
6. Platelike heat pipe plug-in type high-power LED radiator according to claim 4, is characterized in that, the length ratio of the height of described slot and described Platelike heat pipe axis direction is 1:10 to 1:200.
7. Platelike heat pipe plug-in type high-power LED radiator according to claim 1, is characterized in that, described slot is uniformly distributed on metal substrate.
8. Platelike heat pipe plug-in type high-power LED radiator according to claim 1, is characterized in that, in a certain slot on described heat pipe installed surface, along flute length direction, is set up in parallel a plurality of described Platelike heat pipes.
9. Platelike heat pipe plug-in type high-power LED radiator according to claim 1, is characterized in that, after described high-power LED radiator assembling, above the above condensation segment of gravity direction is positioned at described evaporator section; Described Platelike heat pipe favours the setting of described heat pipe installed surface or Platelike heat pipe and is obliquely installed along the slot length direction of slot.
10. Platelike heat pipe plug-in type high-power LED radiator according to claim 1, is characterized in that, the material of described metal substrate and described Platelike heat pipe is aluminum or aluminum alloy.
CN201420093302.3U 2014-03-03 2014-03-03 Plate-shaped heat pipe plug-in type high-power LED radiator Expired - Lifetime CN203757673U (en)

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CN201420093302.3U CN203757673U (en) 2014-03-03 2014-03-03 Plate-shaped heat pipe plug-in type high-power LED radiator

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Application Number Priority Date Filing Date Title
CN201420093302.3U CN203757673U (en) 2014-03-03 2014-03-03 Plate-shaped heat pipe plug-in type high-power LED radiator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103807835A (en) * 2014-03-03 2014-05-21 赵耀华 Plate-shaped heat pipe insertion type heat dissipation device of large-power LED

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103807835A (en) * 2014-03-03 2014-05-21 赵耀华 Plate-shaped heat pipe insertion type heat dissipation device of large-power LED

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Effective date of registration: 20230720

Address after: 230011 Floor 7, Building 1, Zhoufeng Holding Building, No.1 Xingfu Road, Yaohai District, Hefei, Anhui Province

Patentee after: Anhui Kunbo Zhixin Equity Investment Partnership (L.P.)

Address before: 100020, A, block 210, East 701, Wangjing garden, Beijing, Chaoyang District

Patentee before: Zhao Yaohua

Patentee before: Zhang Kairong

Effective date of registration: 20230720

Address after: 230061 Room A01, 17/F, Building 2, China Net Grain Networking Technology Industrial Park, Yaohai District, Hefei City, Anhui Province

Patentee after: Hefeng Technology Co.,Ltd.

Address before: 230011 Floor 7, Building 1, Zhoufeng Holding Building, No.1 Xingfu Road, Yaohai District, Hefei, Anhui Province

Patentee before: Anhui Kunbo Zhixin Equity Investment Partnership (L.P.)

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