CN201259193Y

CN201259193Y - Heat radiator of high power LED street lamp

Info

Publication number: CN201259193Y
Application number: CNU2008201345451U
Authority: CN
Inventors: 李镭
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-04
Filing date: 2008-09-04
Publication date: 2009-06-17
Anticipated expiration: 2018-09-04

Abstract

The utility model discloses a high-power LED street light radiator which adopts a two-side radiating fin structure; moreover, the surfaces of the two sides of the radiating fin are corrugated radiating surfaces. The two-side radiating fin of the radiator has excellent heat radiating effect; the design of the corrugated surface widens the cooling area and improves cooling efficiency. In addition, the radiator adopts integrated design which is especially fit for being produced by extrusion dies, thereby reducing the die cost and improving the economical benefits. During producing, structural aluminum products can be cut in different lengths for achieving products according to the practical situations.

Description

The high-power LED street lamp radiator

Technical field

The utility model relates to a kind of radiator, particularly a kind of heat spreader structures that is applied to high-power LED street lamp.

Background technology

Light emitting diode (LED) has good illumination effect and the low characteristics that consume energy, so LED is applied to the lighting source field, use LED more and more widely such as present street lamp, industrial light lamp are as lighting source.

But LED has its geneogenous defective as light source, promptly at high temperature burns easily, has a strong impact on the life-span of LED.So for led light source, heat radiation is a very important link.

For the LED source below the 3W, adopt common radiator can reach certain radiating effect, this class radiator adopts the common one-sided heat radiating fin structure that is provided with at the light emitting diode back side, but because the structure difference of various products, its radiating effect is also different.

Produce thermal energy than high-power LED (being generally more than the 3W) when working led chip active area temperature is risen, promptly junction temperature raises, thereby the LED device reliability is reduced, and causes optical attenuation and the shortening in service life of LED, can burn out the LDE device when serious.With the electronic equipment is example, and that damages in the use has 55% to be that temperature surpasses setting and causes, along with temperature raises, crash rate is exponential increase trend.During 10 ℃ of every risings of the operating temperature of device, its crash rate can increase an order of magnitude, i.e. and so-called " 10 ℃ of rules ", LED also has similar characteristics.

For more than the 3W, the led light source of 5～10W particularly, the radiating effect that heat radiating fin structure played of common radiator is relatively poor relatively, the heat that light emitting diode produces can not be distributed timely, to such an extent as to had a strong impact on this type of power led application and service life.

Solution commonly used at present has a variety of, and as the disclosed high-power LED high-brightness lighting lamp of CN200620069270.9, LED is installed additional cooling fan dispel the heat, the device structure complexity, production cost is also than higher.CN200710031036.6 is disclosed to be with external radiator high-power LED street lamp fixture, adopts external radiator in its design, but the same relative complex of its structure, the cost height make difficulty, and the gauge size of its product is also more single.The disclosed a kind of high-power LED street lamp of CN200720148153.6, structure adopts the copper heat pipe to connect aluminium radiator fin, the mode of utilizing the water in the copper pipe to carry out heat conduction, this equipment plays good cooling effect at the LED lamp near copper heat pipe both sides, but the LED lamp heat-conducting effect for the centre position is not obvious, and this kind equipment is in case when need increasing the size of street lamp, and is just more limited to the cooling-down effect away from the LED lamp of copper heat pipe.The disclosed open type multilayer composite LED heat radiation system of CN200710159168.7, adopted the heat radiating fin structure of multilayer, adopt heat pipe to conduct heat between the multilayer heat radiating fin structure, play good heat-conducting effect, but its shortcoming is also obvious relatively simultaneously, be that the heat that produces between the multilayer heat radiating fin structure produces convection current, and fin is in the inside of whole system, its heat also is not easy to distribute.In addition, the liquid of heat pipe inside can produce general volatilization picture now after long-term the use, can cause the radiating effect of radiator to descend like this.

Based on the problems referred to above, I have designed a kind of radiator that is applied to more high-power (be particularly suitable for power between 5～10W) LED street lamp, am equipped with fin at the back side of radiator and front that the LED lamp is installed.

The utility model content

The purpose of this utility model provides a kind of high-power LED street lamp radiator, adopts two-sided heat radiating fin structure, reaches better heat radiating effect, solves high-power LED street lamp radiator structure complexity commonly used, the production cost problem of higher.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of high-power LED street lamp radiator, adopt flat radiator body, dorsal part at radiator body evenly is provided with some fin that are connected with main body, the surface that led light source is installed on main body is provided with the some groups of fin that are connected with main body, and the both side surface of fin adopts the corrugated heat-delivery surface; Wherein, being an inclination angle near the installation led light source surface between the outer peripheral fin on the radiator body tilts laterally; And the groups of fins in the outside is vertical near inboard installation led light source surface with it, and the whole employing of the utility model is one-body molded.

Two-sided fin of the present utility model has better heat radiating effect, and the design of corrugated surface has increased area of dissipation, has improved radiating efficiency; And the employing integrated design is particularly suitable for adopting extrusion die production, has saved die cost, has improved economic benefit; And in process of production, also can intercept the structure aluminium formation product of different length according to actual conditions.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the structure chart of the utility model embodiment;

Fig. 2 is the structure chart of the another kind of embodiment of the utility model.

Among the figure:

1, radiator body; 2, fin; 3, fin; 4, corrugated heat-delivery surface; 5, the led light source surface is installed.

The specific embodiment

As shown in Figure 1, a kind of high-power LED street lamp radiator described in the utility model, adopt flat radiator body 1, evenly be provided with some perpendicular to main body 1 and the fin 2 that is connected with main body 1 at the dorsal part of radiator body 1, led light source surface 5 is installed on main body 1 is provided with the some groups of fin 3 that are connected with main body 1, fin 2,3 structures of bilateral realize the bilateral heat radiation like this, can make the better heat-radiation effect of radiator.

The both side surface of fin 2,3 adopts corrugated heat-delivery surface 4, can effectively increase area of dissipation like this, improves radiating efficiency.

Wherein, being an inclination angle near the installation led light source surface 5 of the radiator body 1 between outer peripheral two groups of fin 3 tilts laterally; And accordingly as shown in Figure 2, the groups of fins 3 in the outside is vertical with its close inboard radiator body 1 surface, can distinguish and disperse hot spot to the left and right sides.

The utility model adopts integrated design, is particularly suitable for adopting extrusion die production, and adopting extrusion die production is to adopt 1/20th of die casting production cost, thereby has saved die cost greatly, has improved economic benefit.And under the prerequisite that satisfies heat radiation, have both the lamp housing function again simultaneously, promptly can be used as lamp housing and use at radiator body 1 outermost fin 2,3.And in process of production, also can intercept the structure aluminium formation product of different length according to actual conditions.

Claims

1, a kind of high-power LED street lamp radiator, adopt flat radiator body (1), it is characterized in that, dorsal part at radiator body (1) evenly is provided with some fin (2) that are connected with main body (1), goes up installation led light source surface (5) in main body (1) and is provided with the some groups of fin (3) that are connected with main body (1).

2, high-power LED street lamp radiator according to claim 1 is characterized in that, radiator body (1) upward is an inclination angle near the installation led light source surface (5) between the outer peripheral fin (3) and tilts laterally.

3, high-power LED street lamp radiator according to claim 1 and 2 is characterized in that, the groups of fins in the outside (3) is vertical near inboard installation led light source surface (5) with it.

According to any described high-power LED street lamp radiator of claim 1-3, it is characterized in that 4, the both side surface of described fin (2), (3) adopts corrugated heat-delivery surface (4).

According to any described high-power LED street lamp radiator of claim 1-4, it is characterized in that 5, the utility model adopts one-body molded.