CN202442298U

CN202442298U - Heat radiating structure

Info

Publication number: CN202442298U
Application number: CN2012200295536U
Authority: CN
Inventors: 陆炜
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-30
Filing date: 2012-01-30
Publication date: 2012-09-19
Anticipated expiration: 2022-01-30

Abstract

The utility model discloses a heat radiating structure, which comprises a heat absorption end and a heat radiating end, wherein the surfaces of the heat absorption end and the heat radiating end are respectively provided with a heat conduction layer, a heat radiating passage is arranged between the heat absorption end and the heat radiating end, the inner wall of the heat radiating passage is provided with a heat conduction layer, and a heat conduction material is filled inside the heat radiating passage. The heat conduction material and the heat conduction layer are soft ceramic or heat conduction silica gel. Both the heat absorption end and the heat radiating end adopt heat-resisting insulation materials, such as plastics, nylon and rubber. Since a key problem of a heat conduction distance is solved, a fin structure which is identical to that of a traditional heat radiator can be adopted, and the heat radiating capacity which is the same as that of the traditional heat radiator can be achieved.

Description

A kind of radiator structure

Technical field

The utility model relate to a kind of novel be the heat abstractor of base material with nonmetallic materials, particularly a kind of radiator structure that is provided with heat dissipation channel.

Background technology

Be applied to electronic product at present, especially the radiator on the LED illuminating product mostly is the basis with aluminium matter and the good metal material of heat conductivity such as copper, and traditional aluminium, copper radiator mainly are made up of two parts, are respectively base part and fin part.Base part absorbs heat, is transmitted to the fin part, and the fin end looses heat in air through the mode of radiation and convection current.And along with LED illuminating product heat radiation requires increasingly highly, the volume and weight of heat abstractor is also big more, and corresponding cost also improves thereupon.The weak point of heat dissipation metal device also is: the maximum defective of metal material is conducted electricity exactly; Such as present common high-power LED lamp all is to adopt the Aluminium Radiator shell; In case be installed on power supply electric leakage wherein, will make on the radiator chargedly, produce potential safety hazard.

On the other hand; We are concerned about; At present there have been soft pottery, heat conductive silica gel etc. to have the material of heat conduction and insulating properties concurrently; The compound heat sink material integral manufacturing of this type becomes its cost of pattern of radiator to be higher than aluminum, copper radiator, so now still with coating, the pattern of filling glue is as the auxiliary heat dissipation material.The heat conductivility of this type heat sink material is no more than copper aluminium at present, and still along with the continuous development of technology, its heat conductivility will surmount metal materials such as copper aluminium future.

Summary of the invention

The utility model technical problem to be solved is the deficiency to above-mentioned prior art, according to radiating principle, the radiator structure of a kind of low cost, in light weight and insulation is provided.

The heat-sinking capability of radiator depends primarily on three aspects, the capacity of heat transmission of material, and the contact area and the heat conducting distance of fin part and air, three links are complementary.The capacity of heat transmission of material is strong more, can absorb the heat that thermal source sends rapidly, adopts aluminium at present; Copper material is exactly because of its good heat conductivity, and the fin part is many more, and is long-pending big more with air contacting surface; Heat-exchange capacity is strong more, and it is good more to dispel the heat, and heat conduction distance refers to the distance of the heat absorbing end of pedestal to the fin heat-delivery surface; The short-range missile thermal velocity is fast more more for distance, and the heat of conduction is many more in the unit interval.We draw a conclusion thus, as long as can realize above-mentioned three conditions, just can realize the function of radiator, and with the material of radiator be that it doesn't matter.

On the other hand, we also notice some soft ceramic material application have been arranged at present on radiator; Mainly be because Aluminium Radiator after machine-shaping; Need do some surface treatments, plating commonly used or anodic oxidation form protective layer on the surface, prevent the radiator oxidation; And the realization surface aesthetic, but the heat conductivility of this layer protective layer but reduces greatly.Soft ceramic material exactly can be avoided this defective, so the radiating end that is applied in fin is as the auxiliary protection cooling application.We also notice and are useful on whole coated with thermally conductive material in addition; Such as the LED bulb of Panasonic, the whole coating of having done heat sink material of its radiator part, but it does not make finned radiator structure; Reason is heat conduction distance; This simply being coated in the application, the heat susceptor edges that after base end absorbs, will detour is transmitted to radiating end again, if radiating end is made fin-shaped; Fin in the middle of then heat also will just can reach through the fin at edge, long like this heat conduction distance does not have function.So it is nonsensical that this radiating fin pattern is made in simple coating,, Panasonic simply applies so also just simply having done the pattern of a heat radiation cup.This simple coating brings defective again; The purpose of fin structure is to increase area of dissipation with the contact area of air in order to increase; In theory, area of dissipation is big more, and heat-sinking capability is strong more; But abandon area of dissipation for shortening heat conduction distance, reduced the heat-sinking capability of radiator so in fact again.The contradiction of how resolving between above-mentioned three radiating conditions is only the creationary key of the utility model.

The technical scheme that the utility model is taked is following: a kind of radiator structure; Comprise heat absorbing end, radiating end, the surface of heat absorbing end and radiating end is provided with heat-conducting layer, is provided with heat dissipation channel between heat absorbing end and the radiating end; The inwall of heat dissipation channel is provided with heat-conducting layer, and heat dissipation channel can be designed as groove or hole.Be filled with Heat Conduction Material in the heat dissipation channel.Heat Conduction Material, heat-conducting layer are soft pottery or heat conductive silica gel.Heat absorbing end and radiating end adopt the high temperature insulation material, like plastics, nylon, rubber.Radiating end is provided with radiating fin, and fin surface is provided with heat-conducting layer.

The present technique scheme has realized the requirement as the radiator function from three aspects:

1, the good heat conductivity of material: because participate in the material of heat conduction function is heat sink materials such as soft pottery, is to have equal heat-sinking capability with aluminum bronze, and also might further surmount aluminium, copper future.

2, owing to solved the key issue of hot conduction distance; Make this programme can adopt the fin structure same with the traditional heat-dissipating device; Can come to increase flexibly area of dissipation through quantity, the size of regulating fin, thereby obtain and the same heat-sinking capability of traditional heat-dissipating device.

3, be communicated with heat absorbing end and radiating end through slotted hole structure, obtained the heat conduction distance same like this, solved the shortcoming of at present simple coated with thermally conductive distance, improved heat-sinking capability greatly with the traditional heat-dissipating device.

4, radiator structure adopts non-metallic material, compares with metal materials such as adopting copper aluminium, is convenient to design model, integrally formed, has not only alleviated the weight of radiator greatly, and has reduced difficulty of processing and production cost.

5, non-metallic material has insulation characterisitic, is applied to electric, electronic product and meets safety requirements more.For present LED lamp product, because power supply all is positioned in the radiator of metal at present, in order to pass through the safety authentication, the cost of power supply is very high, adopts this programme to do the cost that radiator can reduce power supply greatly.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is the structural representation of the utility model embodiment two.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is remake further detailed explanation.

Embodiment one, referring to Fig. 1, and a kind of radiator structure; Comprise heat absorbing end 6, radiating end 1, the surface of heat absorbing end 6 and radiating end 1 is provided with heat-conducting layer 5, is provided with heat dissipation channel 3 between heat absorbing end 6 and the radiating end 1; The inwall of heat dissipation channel 3 is provided with heat-conducting layer 4, and heat dissipation channel 3 can be designed as groove or hole.Be filled with Heat Conduction Material 2 in the heat dissipation channel 3.Heat Conduction Material 2, heat-conducting layer 4,5 are soft pottery or heat conductive silica gel.Heat absorbing end 6 adopts the high temperature insulation material with radiating end 1, like plastics, and perhaps nylon, perhaps rubber.

Embodiment two, and referring to Fig. 2, itself and embodiment one difference are that radiating end is provided with radiating

fin

7,8, and the pattern of fin can be processed various patterns as requested; Fin 7,8 adopts the high temperature insulation materials, like plastics, and perhaps nylon, perhaps rubber;

Fin

7,8 surfaces are provided with heat-conducting layer 9, and heat-conducting layer 9 is soft pottery or heat conductive silica gel.

The foregoing description does not adopt metal materials such as aluminium, copper as heat sink material, adopt highly heat-conductive materials such as soft pottery as heat sink material, and this type material is suitable as coating; That just needs stiff materials as the radiator skeleton, considers that skeleton just plays a supportive role, and need not to participate in heat radiation; Consider insulation again; So can adopt the skeleton of high temperature insulation materials such as plastics, nylon, rubber as radiator, this type material is easy to moulding, and the temperature can tolerate the heat dissipating layer heat radiation time; Promptly process the pedestal and the fin pattern of radiator with heat proof material, the pattern of fin can be processed various patterns as requested.In the coated with thermally conductive material, can obtain maximum area of dissipation like this, area of dissipation has solved, most critical be the problem that will solve the conduction distance; The front has been discussed, if along the susceptor edges conduction, then conduction distance is long; Fin structure is nonsensical, so will shorten the conduction distance, scheme is on pedestal, to have slotted eye along the fin junction; The heat-absorbent surface that is communicated with fin and pedestal; In slotted eye, fill Heat Conduction Material, so just realized the shortest connection of heat absorbing end and radiating end, promptly bring in the shortest heat conduction distance of acquisition with heat radiation through the direct connection heat absorbing end of offering the foundation of slotted eye filling heat sink material.For the conduction of velocity of balance heat absorbing end and radiating end, can pass through the width of adjustment slotted eye simultaneously, slotted eye is wide more; It is many more to fill Heat Conduction Material, can further increase the capacity of heat transmission, evenly applies aforesaid Heat Conduction Material at the fin end then; Formation is covered in the uniform coating of fin surface; In slotted eye, fill Heat Conduction Material as being connected of heat absorbing end and radiating end, in heat absorbing end according to thermal source heating area coated with thermally conductive material, the formation heat-sink shell.Form the heat dissipation channel that is the main body with aforementioned Heat Conduction Material thus, the whole function that realizes radiator.

Except that the foregoing description, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the protection domain of the utility model requirement.

Claims

1. a radiator structure comprises heat absorbing end, radiating end, and the surface of heat absorbing end and radiating end is provided with heat-conducting layer, it is characterized in that: be provided with heat dissipation channel between heat absorbing end and the radiating end, the inwall of heat dissipation channel is provided with heat-conducting layer.

2. radiator structure according to claim 1 is characterized in that: be filled with Heat Conduction Material in the heat dissipation channel.

3. radiator structure according to claim 2 is characterized in that: Heat Conduction Material is soft pottery or heat conductive silica gel.

4. radiator structure according to claim 1 is characterized in that: heat-conducting layer is soft pottery or heat conductive silica gel.

5. radiator structure according to claim 1, it is characterized in that: radiating end is provided with radiating fin, and fin surface is provided with heat-conducting layer.

6. radiator structure according to claim 1 is characterized in that: heat absorbing end, radiating end adopt the high temperature insulation material.

7. radiator structure according to claim 5 is characterized in that: radiating fin adopts the high temperature insulation material.

8. according to claim 6 or 7 described radiator structures, it is characterized in that: the high temperature insulation material is plastics, perhaps nylon, perhaps rubber.

9. radiator structure according to claim 1 is characterized in that: heat dissipation channel can be designed as groove or hole.