CN201237194Y

CN201237194Y - High-power high-efficiency LED road lamp radiator

Info

Publication number: CN201237194Y
Application number: CNU2008200487332U
Authority: CN
Inventors: 颜晓英; 张元�
Original assignee: Dongguan Woomi Power Tech Co Ltd
Current assignee: Dongguan Woomi Power Tech Co Ltd
Priority date: 2008-06-04
Filing date: 2008-06-04
Publication date: 2009-05-13
Anticipated expiration: 2018-06-04

Abstract

The utility model relates to a highly-efficient radiator of a high-power LED streetlamp, which is mounted on a PCB (Printed Circuit Board) and comprises a radiating substrate surface and a radiating column which are cast into a whole, wherein, heat-conducting glue is applied between the radiating substrate and the PCB. The heat generated by the LED can be rapidly transferred to the radiating substrate, and dissipated into the air by the radiator exposed in the air, and then the heat can be removed by the flowing air, thereby ensuring high heat conductivity, heat-transfer conductance and heat dissipation, greatly reducing the light decay of the high-power LED streetlamp and prolonging the service life of the LED light source.

Description

A kind of large power high efficiency LED street lamp heat radiator

Technical field

The utility model relates to radiator, relates in particular to a kind of radiator that adopts the street lighting of low-power consumption great power LED.

Background technology

Under the energy-conservation call in the whole world, energy-conservation tide surges forward, and along with the development of semi-conductor industry technology, the high brightness LED manufacturing technology obtains quantum jump, has promoted the employing high light effect source to replace low light efficiency light source.The large-power light-emitting diodes cost performance improves day by day, compares with the traditional lighting light fixture, and the LED light fixture does not need to use optical filtering or optical filter to produce coloured light, efficient height, photochromic pure not only, and can realize dynamically or the color change of gradual change.When changing colour temperature, keep having high colour rendering index, satisfy different application needs.Great power LED is occupied an leading position in the LED street lamp.It has been the trend of development that city illumination LED street lamp adopts great power LED, but there is heat dissipation problem in the LED street lamp, because of great power LED when work electric energy very major part convert heat energy to, if the light fixture heat radiation is bad, internal temperature surpasses 60 ℃, and LED will aggravate light decay, lower efficiency, shorten the life-span even quit work.So heat dissipation problem is the most scabrous key of great power LED.The method of more existing solution heat dissipation problems as the increase area of dissipation, but can strengthen light fixture weight so greatly, and the street lamp weight that has reaches more than the 20kg, and is totally unfavorable to the security performance of street lamp.

The utility model content

The utility model provides a kind of volume little, in light weight at the above-mentioned defective of prior art, and area of dissipation greatly, is not subjected to the high-power LED street lamp radiator of natural wind directionality limitation.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of large power high efficiency LED street lamp heat radiator is installed on the pcb board, comprises heat-radiating substrate and thermal column, and heat-radiating substrate and thermal column die casting scribble heat-conducting glue in one between described heat-radiating substrate and the pcb board.

Preferably, described thermal column is pectination branch and is installed in the heat-radiating substrate other end at the above pcb board of heat-radiating substrate.

Preferably, described radiator is cast aluminium material or copper material.

As can be seen from the above technical solutions, the utility model can be transmitted to the heat that led light source produced on the heat-radiating substrate rapidly, by exposed aerial radiator post heat is dispersed in the air again, by flow air heat is taken away, guarantee good heat conduction, convection current and diversity, reduced the high-power LED street lamp light decay greatly, prolonged its service life, and the cambered surface radiating surface can be accepted the wind that blows from all directions, heat is taken away rapidly, and help knowing the dust of radiating surface, improve radiating efficiency.

Description of drawings

Fig. 1 is the utility model first embodiment sectional view;

Fig. 2 is the utility model first embodiment three-dimensional view;

Fig. 3 is the utility model second embodiment three-dimensional view.

The specific embodiment

Below in conjunction with the specific embodiment the utility model is described in further detail.

With reference to Figure 1 and Figure 2, the utility model is pasted on pcb board 3 by radiator, the a plurality of semiconductor LED light sources of installing on the pcb board, radiator is made up of the heat-radiating substrate 2 of heat-absorbent surface and the thermal column 1 of heat radiation, wherein the fin-type area of the developed area ratio routine of thermal column 1 wants big, be erected on the heat-radiating substrate 2, therefore be not subjected to the limitation of the directionality of natural heat dissipation branch.Pcb board 3 connects and fixation as the power supply of led light source 4, and led light source is as the light source of street lighting.The utility model scribbles heat-conducting glue in order to reduce thermal resistance between led light source 4 and the radiating surface 1 between heat-radiating substrate and pcb board, improve radiating efficiency.

As preferred implementation of the present utility model, described heat-radiating substrate and thermal column are cast aluminium material or copper material.

Refer again to shown in Figure 3, the radiating surface of radiator 2 is arc surfaced, therefore the thermal column 1 that is fixed on the radiating surface is fan-shaped distribution, this structure one is to help accepting the wind that all directions blow, rapidly the heat on the thermal column is taken away, the 2nd, caloric receptivity is big, can absorb heat rapidly, and the dust that is the radiating surface of cambered surface also is difficult for stopping under the washing away of rainwater and wind, guarantees the heat transference efficiency of radiating surface.

The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims

1, a kind of large power high efficiency LED street lamp heat radiator is installed on the pcb board, it is characterized in that: comprise heat-radiating substrate face and thermal column, heat-radiating substrate face and thermal column die casting scribble heat-conducting glue in one between described heat-radiating substrate and the pcb board.

2, large power high efficiency LED street lamp heat radiator according to claim 1 is characterized in that: described thermal column is pectination branch and is installed in the heat-radiating substrate other end at the above pcb board of heat-radiating substrate.

3, large power high efficiency LED street lamp heat radiator according to claim 1, it is characterized in that: described radiator is cast aluminium material or copper material.