CN204372864U

CN204372864U - A kind of heat-pipe radiator for high-power LED lamp

Info

Publication number: CN204372864U
Application number: CN201420778181.6U
Authority: CN
Inventors: 程其政; 潘方亮
Original assignee: KANGNAISI SIGNAL EQUIPMENT CO Ltd SHANGHAI
Current assignee: KANGNAISI SIGNAL EQUIPMENT CO Ltd SHANGHAI
Priority date: 2014-12-10
Filing date: 2014-12-10
Publication date: 2015-06-03
Anticipated expiration: 2024-12-10

Abstract

The utility model discloses a kind of heat-pipe radiator for high-power LED lamp, heat pipe is a U-shaped heat pipe, and heat load erecting bed is welded in the bending part of heat pipe, and heat pipe runs through backplate and some fin, some fin are that row are arranged on heat pipe, and fin is positioned at two armlets of backplate; The utility model by offer on heat load erecting bed mate with heat pipe structure U-shaped breach, on fin and backplate, offer the circular hole with heat pipe diameter matches, make fully to connect and heat pipe contact, fin thickness only has between 0.3-1mm, the heat of heat pipe can be delivered on fin effectively, radiating efficiency is high; Backplate adopts thickness to be thick aluminium sheet between 1.5-2.5mm or steel plate, and weight significantly alleviates relative to common radiator, and anti-vibration and shock resistance good; The surface area of general structure is more than five times of common radiator, and weight only has 1/5th of common radiator.

Description

A kind of heat-pipe radiator for high-power LED lamp

Technical field

The utility model relates to a kind of technical field of radiator, particularly relates to a kind of heat-pipe radiator for high-power LED lamp.

Background technology

Because LED luminous intensity and service life affect very large by operating temperature, operating temperature is higher, luminous intensity and the life-span lower, therefore, generally more than needing during 1.5W, LED considers that design radiator structure is to reduce LED operating temperature at use power, mode the most frequently used in the industry increases a metal heat sink after the wiring board of LED welding, metal heat sink is generally aluminum alloy material or copper alloy material, making the general process of the radiator of this type is that section bar stretches, or die casting.

But the radiator that section bar stretches, for technique restriction, all needs a root type material to be finished, and early stage, blanking cost was high, and small lot batch manufacture can shine into waste, and mould is not easily revised at every turn.

Casting radiator, mould is complicated, and easily have overlap and space in product, Density inhomogeneity, product percent of pass is low.

Stretching radiator and casting radiator are owing to considering the intensity of structure, and the thickness of the fin on radiator and can be thicker with the thickness of heat load contact surface, which results in radiator very heavy, use the light fixture anti-seismic performance of this type radiator to reduce.

In addition, heat on radiator is finally be delivered in ambient air, therefore, weighing the most important index of radiator heat-dissipation performance sees in same space exactly, the surface area of radiator, surface area is larger, larger with air contact surfaces, the efficiency that heat is delivered in air is also faster, stretching radiator and casting radiator are owing to considering the intensity of structure, it is very long and very thin that the thickness of the fin on radiator can not do, and greatly reduces the surface area of radiator, just reduce the efficiency of transferring heat.

Heat pipe (HEATPIPE) technology was widely used in the industry such as aerospace, military project in the past, was common in now on the radiator of computer CPU.Heat pipe can gather around the good capacity of heat transmission, and the heat absorption of object, heat release are relative, every when having temperature difference to exist, and just must occur the phenomenon that heat is transmitted from high temperature to low temperature place.From three kinds of modes (radiation, convection current, conduction) of heat trnasfer, wherein heat transfer is the fastest.Heat pipe utilizes sweat cooling exactly, makes heat pipe two ends temperature difference very large, heat is conducted fast.General heat pipe is made up of shell, liquid-sucking core and end cap.Inside heat pipe is pumped into negative pressure state, is filled with suitable liquid, and this boiling point of liquid is low, easily volatilizees.Tube wall has liquid-sucking core, and it is made up of capillary-porous material.Heat pipe one end is evaporation ends, one end is condensation end in addition, when heat pipe one end is heated, liquid in capillary evaporates rapidly, and steam flows to other one end under small pressure differential, and releases heat, regelation becomes liquid, liquid flows back to evaporation ends along porous material by the effect of capillary force again, and so circulation is more than, and heat reaches other one end by heat pipe one end.This circulation is carried out fast, and heat can be come by conduction continuously.

Inside heat pipe is pumped into negative pressure state, and there is liquid inside.Tube wall has liquid-sucking core, and it is made up of capillary-porous material.Therefore, heat pipe is very easy damaged or bending, the non-constant of anti-seismic performance.

Utility model content

In view of this, the utility model proposes a kind of heat-pipe radiator for high-power LED lamp, metal heat sink need be increased with the circuit board solving above-mentioned common LED, radiator manufacturing process bothers, front current cost is high, waste of material, heavier mass, shock resistance is poor, and the problem of the easy bending of heat pipe or damage.

For achieving the above object, the technical solution of the utility model is achieved in that

A kind of heat-pipe radiator for high-power LED lamp, described heat-pipe radiator is made up of heat load erecting bed, heat pipe, some fin and backplate, wherein, described heat pipe is a U-shaped heat pipe, described heat load erecting bed is welded in the bending part of described heat pipe, described heat pipe runs through described backplate and some described fin, and some described fin are that row are arranged on described heat pipe, and described fin is positioned at two armlets of described backplate.

The above-mentioned heat-pipe radiator for high-power LED lamp, wherein, described heat load erecting bed is cube structure and has U-shaped breach, and described heat load erecting bed is connected with described heat pipe by described U-shaped breach.

The above-mentioned heat-pipe radiator for high-power LED lamp, wherein, described backplate is the thick aluminium sheet of thickness between 1.5-2.5mm or the bending plate of steel plate bending, the surface of described backplate offers two circular holes, diameter and the described heat pipe diameter of described circular hole match, and elongated hole offered by described armlet.

The above-mentioned heat-pipe radiator for high-power LED lamp, wherein, the thickness of described fin is between 0.1-1mm, and surface offers circular hole described in two, and diameter and the described heat pipe diameter of described circular hole match, and described circular hole circumference place is also provided with surrounding edge structure.

The above-mentioned heat-pipe radiator for high-power LED lamp, wherein, described heat pipe length is greater than described backplate length, the width of described fin be slightly less than described backplate two described in width between armlet.

The utility model is owing to have employed above-mentioned technology, and the good effect of generation is:

The utility model by offer on heat load erecting bed mate with heat pipe structure U-shaped breach, on fin and backplate, offer the circular hole with heat pipe diameter matches, make fully to connect and heat pipe contact, fin thickness only has between 0.3-1mm, the heat of heat pipe can be delivered on fin effectively, radiating efficiency is high; Backplate adopts thickness to be thick aluminium sheet between 1.5-2.5mm or steel plate, and weight significantly alleviates relative to common radiator, and anti-vibration and shock resistance good; The surface area of general structure is more than five times of common radiator, and weight only has 1/5th of common radiator.

Accompanying drawing explanation

The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the general assembly schematic diagram of a kind of heat-pipe radiator for high-power LED lamp of the present utility model;

Fig. 2 is a kind of structural representation for heat load erecting bed in the heat-pipe radiator of high-power LED lamp of the present utility model;

Fig. 3 is a kind of structural representation for heat pipe in the heat-pipe radiator of high-power LED lamp of the present utility model;

Fig. 4 is a kind of structural representation for backplate in the heat-pipe radiator of high-power LED lamp of the present utility model;

Fig. 5 is a kind of structural representation for fin in the heat-pipe radiator of high-power LED lamp of the present utility model;

Fig. 6 is a kind of assembling schematic diagram for heat load erecting bed and heat pipe in the heat-pipe radiator of high-power LED lamp of the present utility model;

Fig. 7 is of the present utility model a kind of for several fin array schematic diagrames in the heat-pipe radiator of high-power LED lamp.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.

Embodiment

Incorporated by reference to shown in Fig. 1 to Fig. 7, a kind of heat pipe 2 radiator for high-power LED lamp of the present utility model, heat pipe 2 radiator is by heat load erecting bed 1, heat pipe 2, some fin 4 and backplate 3 form, wherein, heat pipe 2 is a U-shaped heat pipe 2, heat load erecting bed 1 is welded in the bending part of heat pipe 2, heat on heat load erecting bed 1 can export on fin 4 with the efficiency of twice by U-shaped heat pipe 2, heat pipe 2 runs through backplate 3 and some fin 4, some fin 4 are arranged on heat pipe 2 in row, between fin 4, interval is equal, make heat radiation evenly, fin 4 is positioned at two armlets 9 of backplate 3.

The utility model also has following embodiment on the basis of the above, please continue see shown in Fig. 1 to Fig. 7,

In further embodiment of the present utility model, heat load erecting bed 1 has three planes for cube structure, also has U-shaped breach 5, and U-shaped breach 5 structure and heat pipe 2 cylindrical structure match, and are convenient to contact with heat pipe 2 and weld.

In further embodiment of the present utility model; backplate 3 is the thick aluminium sheet of thickness between 1.5-2.5mm or the steel plate bending plate by sheet metal process bending; thick aluminium sheet or steel plate is adopted to be that material can reach better anti-vibration and shock resistance; the surface of backplate 3 offers two circular holes 6; diameter and heat pipe 2 diameter of circular hole 6 match; elongated hole 8 offered by armlet 9; the weight of backplate 3 can be alleviated further; backplate 3 can play the effect of fender bracket simultaneously; also have conduction of heat, the local temperature that can balance whole radiator is poor.

In further embodiment of the present utility model, the thickness of fin 4 is between 0.1-1mm, and surface offers two circular holes 6, diameter and heat pipe 2 diameter of circular hole 6 match, circular hole 6 circumference place is also provided with surrounding edge structure 7, is fully contacted with heat pipe 2 by surrounding edge structure 7, reaches better radiating effect.

In further embodiment of the present utility model, heat pipe 2 length is greater than backplate 3 length, and the width of fin 4 is slightly less than the width between two armlets 9 of backplate 3.

In sum, the utility model by offer on heat load erecting bed mate with heat pipe structure U-shaped breach, on fin and backplate, offer the circular hole with heat pipe diameter matches, make fully to connect and heat pipe contact, fin thickness only has between 0.3-1mm, the heat of heat pipe can be delivered on fin effectively, radiating efficiency is high; Backplate adopts thickness to be thick aluminium sheet between 1.5-2.5mm or steel plate, and weight significantly alleviates relative to common radiator, and anti-vibration and shock resistance good; The surface area of general structure is more than five times of common radiator, and weight only has 1/5th of common radiator.

The foregoing is only the utility model preferred embodiment; not thereby embodiment of the present utility model and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilization the utility model descriptions and diagramatic content and apparent change obtain in protection domain of the present utility model.

Claims

1. the heat-pipe radiator for high-power LED lamp, described heat-pipe radiator is made up of heat load erecting bed, heat pipe, some fin and backplate, it is characterized in that, described heat pipe is a U-shaped heat pipe, described heat load erecting bed is welded in the bending part of described heat pipe, described heat pipe runs through described backplate and some described fin, and some described fin are in row arrangement with on described heat pipe, and described fin is positioned at two armlets of described backplate.

2. the heat-pipe radiator for high-power LED lamp according to claim 1, is characterized in that, described heat load erecting bed is cube structure and has U-shaped breach, and described heat load erecting bed is connected with described heat pipe by described U-shaped breach.

3. the heat-pipe radiator for high-power LED lamp according to claim 1, it is characterized in that, described backplate is the thick aluminium sheet of thickness between 1.5-2.5mm or the bending plate of steel plate bending, the surface of described backplate offers two circular holes, diameter and the described heat pipe diameter of described circular hole match, and elongated hole offered by described armlet.

4. the heat-pipe radiator for high-power LED lamp according to claim 1, it is characterized in that, the thickness of described fin is between 0.1-1mm, and surface offers two circular holes, diameter and the described heat pipe diameter of described circular hole match, and described circular hole circumference place is also provided with surrounding edge structure.

5. the heat-pipe radiator for high-power LED lamp according to claim 1, is characterized in that, described heat pipe length is greater than described backplate length, the width of described fin be slightly less than described backplate two described in width between armlet.