CN204986926U - LED (Light emitting diode) plastic heat radiator - Google Patents

Abstract

The utility model provides a LED (Light emitting diode) plastic heat radiator, relates to a radiator. For plastics integral type structure, be equipped with base, inner ring fin, zhonghuan fin and outer loop fin, the base is equipped with the wire through -hole, the lower extreme of inner ring fin, zhonghuan fin and outer loop fin all is connected with the base is perpendicular, is the vertical setting of perpendicular to base to common axis has, central through hole that the inner ring fin encloses with the wire through -hole communicates with each other, and zhonghuan fin and outer loop fin all are equipped with along a plurality of axial fault troughs, and it is the same that the separating groove quantity that separating groove and outer loop fin established is established between to the zhonghuan fin to have the same phase angle of correspondence, outer loop fin outer wall is equipped with the slice fin. The slice fin had better be for following the slice fin that outer loop fin outer wall axial interval entad set up. Substituted aluminium system radiator to have the shell function concurrently, can overcome and touch electric leakage potential safety hazard scheduling problem, light in weight, processing is convenient, the design degree of freedom is big, insulating properties good, efficient, be applicable to different scope power LED.

Description

A kind of LED plastic tank radiators

Technical field

The utility model relates to a kind of radiator, particularly relates to a kind of LED plastic tank radiators.

Background technology

As everyone knows, LED, as a kind of new type light source, has the advantages such as energy-conservation, efficient, volume is little, the life-span is long, light emission rate is high, fast response time, driving voltage are low, shock resistance is remarkable compared with conventional light source.But, because LED caloric value is comparatively large, usually needs heat radiation to ensure that it normally works, otherwise the performance such as service life, light emission rate of LED will be affected.So the maximum technical problem of restriction LED light source development is at present exactly LED heat dissipation problem.

The solution of LED heat dissipation problem, normally to be derived heat by radiator and is dispersed in external environment.For radiator material, the radiator material of current LED lamp generally includes metal material, Inorganic Non-metallic Materials and macromolecular material three major types.Wherein the most frequently used radiator is generally adopt Aluminium Radiator, and mainly because the thermal conductivity factor of metallic aluminium is high, proportion is little, low price.But for LED lamp, its radiator also must possess the features such as lightweight, easy processing, price are low, electric insulation.The shortcoming of Aluminium Radiator is that itself is on-insulated, in order to security needs, also needs to increase insulating cement, unfavorable to heat radiation, and undressed aluminium surface emissivity coefficient is low, and thermal radiation capability is weak, must pass through secondary operations treatment surface.Its cost is increased.Compared with aluminum, the general thermal conductivity factor of macromolecular material is lower, is considered to be difficult to as radiator material.But the relative aluminium of plastics price is cheaply a lot, and the relative aluminium of processing technology is also more easy, so plastic tank radiators substituted metal radiator will become the trend in epoch in future.In addition, for radiator structure, the radiator of different structure is also very large on the impact of radiating effect, according to theory calculate, the performance quality of radiator is not only decided by the material of radiator, also be decided by the quality of convection effects simultaneously, when thermal conductivity coefficient is less than 5w/ (mk), belong to the situation that heat transfer is limited, this situation thermal conductivity coefficient is very large on the impact of cooling system, and general plastics thermal conductivity factor all at 1w/ (mk) below, if so junction temperature will be caused to rise rapidly for cooling system, the service life of LED lamp will inevitably be reduced.When thermal conductivity factor is greater than 5w/ (mk), belong to convection-limited situation, when material thickness 5mm and following time, thermal conductivity factor is substantially constant on the impact of the temperature difference, and now thermal conductivity factor is that 5w/ (mk) or 200w/ (mk) impact on junction temperature have been more or less the same.As long as when therefore can think that thermal conductivity factor is more than or equal to 5w/ (mk), heat sink material can be used as with heat-conducting plastic completely.

Summary of the invention

The purpose of this utility model is to provide a kind of LED plastic tank radiators being applicable to different capacity, perfect heat-dissipating.

For achieving the above object, the utility model adopts following technical scheme:

A kind of LED plastic tank radiators, is plastics integral structure, is provided with base, inner ring fin, middle ring fin and outer shroud fin;

Base is provided with wire through-hole; Inner ring fin, middle ring fin are connected with the lower end of outer shroud fin is all vertical with base, in the vertical setting perpendicular to base, and have common axis; The central through hole that inner ring fin surrounds communicates with described wire through-hole, middle ring fin and outer shroud fin fault trough between to be equipped with vertically multiple, interval trough set by middle ring fin is identical with the interval trough quantity set by outer shroud fin, and there is corresponding identical phase angle, outer shroud fin outer wall is provided with sheet fin.

Described sheet fin is preferably the sheet fin along the centripetal setting of outer shroud fin outer wall axially spaced-apart.

Described inner ring fin, between middle ring fin and outer shroud fin, can be interval with centripetal connecting rod, centripetal connecting rod can adopt the cylindrical bar of identical material, and each cylindrical bar is in same level.Centripetal connecting rod is conducive to the heat conduction equilibrium between this shellring shape structure fin of inner ring fin, middle ring fin and outer shroud fin and dispels the heat.

Compared with the prior art, the utility model has following outstanding advantages:

During installation, the utility model is arranged on the basic unit top of LED luminescence chip, by the basic unit of foot of radiator and LED luminescence chip and LED chip close contact.The centre bore of inner ring fin is used for depositing LED drive power, and inner ring fin, except thermolysis, also act as the protective side wall of LED drive power simultaneously.Wire through-hole set by base 5 is used for wire to be passed through.Set by outer shroud fin outer wall, sheet fin is for strengthening heat radiation.Radiator described in the utility model, except as except radiator structure, also has concurrently as outward appearance case function.

Because the utility model is provided with shellring shape structure fin, and middle ring and outer shroud is two-layer is provided with interval trough (hollow out).Be convenient to so very much air and flow into space between each layer ring fin, the flowing of air can significantly strengthen, and radiating effect is significantly improved.Plastic tank radiators can adopt that Integral injection molding is shaping to be made, and very convenient, cost is low.

In addition, according to actual conditions, the heat-conducting plastic of plastic tank radiators can select common heat-conducting plastic for low-power LED, can select high heat conduction engineering plastics (k >=15w/ (mk)), as CoolPoly heat-conducting plastic E510 for high-power LED.The cooling requirements of different capacity LED can be met like this.

LED plastic tank radiators described in the utility model can replace Aluminium Radiator, and have case function concurrently, can overcome and touch problem such as electric leakage potential safety hazard etc., have lightweight, easy to process, design freedom large, good insulation preformance, efficiency are high, the advantage that is applicable to different range power LED.Meanwhile, can solve to a certain extent in the middle of radiator, the problem that radiating effect is poorer.

Accompanying drawing explanation

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

Fig. 2 is the schematic top plan view of Fig. 1.

Fig. 3 is the schematic top plan view of the utility model embodiment 2.

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.

Embodiment 1

See Fig. 1 and 2, described LED plastic tank radiators is plastics integral molding structure, is provided with base 5, inner ring fin 1, middle ring fin 2 and outer shroud fin 3;

Base 5 is provided with wire through-hole; Inner ring fin 1, middle ring fin 2 are all connected with base 5 is vertical with the lower end of outer shroud fin 3, in the vertical setting perpendicular to base 5, and have common axis; The central through hole that inner ring fin 1 surrounds communicates with described wire through-hole, middle ring fin 2 and outer shroud fin 3 fault trough between to be equipped with vertically multiple, interval trough set by middle ring fin 2 is identical with the interval trough quantity set by outer shroud fin 3, and there is corresponding identical phase angle, outer shroud fin 3 outer wall is provided with sheet fin 4.Described sheet fin 4 is the sheet fin along the centripetal setting of outer shroud fin 3 outer wall axially spaced-apart.

Embodiment 2

See Fig. 3, similar to Example 1, difference is: at described inner ring fin, between middle ring fin and outer shroud fin, be interval with centripetal connecting rod 8, and centripetal connecting rod 8 is the cylindrical bar adopting same plastic.Each cylindrical bar is in same level.Centripetal connecting rod is conducive to the heat conduction equilibrium between this shellring shape structure fin of inner ring fin, middle ring fin and outer shroud fin and dispels the heat.

Claims (4)

1. a LED plastic tank radiators, is characterized in that, is plastics integral structure, is provided with base, inner ring fin, middle ring fin and outer shroud fin;

Base is provided with wire through-hole; Inner ring fin, middle ring fin are connected with the lower end of outer shroud fin is all vertical with base, in the vertical setting perpendicular to base, and have common axis; The central through hole that inner ring fin surrounds communicates with described wire through-hole, middle ring fin and outer shroud fin fault trough between to be equipped with vertically multiple, interval trough set by middle ring fin is identical with the interval trough quantity set by outer shroud fin, and there is corresponding identical phase angle, outer shroud fin outer wall is provided with sheet fin.

2. a kind of LED plastic tank radiators as claimed in claim 1, it is characterized in that, described sheet fin is the sheet fin along the centripetal setting of outer shroud fin outer wall axially spaced-apart.

3. a kind of LED plastic tank radiators as claimed in claim 1, is characterized in that, described inner ring fin, is interval with the identical centripetal connecting rod of material between middle ring fin and outer shroud fin.

4. a kind of LED plastic tank radiators as claimed in claim 3, it is characterized in that, described centripetal connecting rod is cylindrical bar, and each cylindrical bar is in same level.