CN203478155U

CN203478155U - LED radiator

Info

Publication number: CN203478155U
Application number: CN201320586058.XU
Authority: CN
Inventors: 陈云芽
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-22
Filing date: 2013-09-22
Publication date: 2014-03-12
Anticipated expiration: 2023-09-22

Abstract

The utility model discloses an LED radiator which comprises a heat dissipation substrate and a cooling fan group. The cooling fin group comprises a plurality of cooling fins arranged on the top surface of the heat dissipation substrate at intervals, a heat dissipation channel is formed between every two adjacent cooling fins, ends used for closing the cooling fans are parallel with ends used for closing the heat dissipation substrate, and one ends, located on the same side, of the cooling fins stretch out of the edge of the heat dissipation substrate. When heat is transmitted to the heat dissipation channels, air in the heat dissipation channels absorbs the heat, density of the air decreases, the air rises and leaves the heat dissipation channels, low-temperature air on lower portions of the heat dissipation channels located outside the heat dissipation substrate enters the heat dissipation channels, and the process is circularly carried out. The LED radiator has the advantages that the vertical-through heat dissipation channels enable air around the cooling fins to be circulated, and the heat dissipation effect is promoted; meanwhile, because the heat dissipation channels of the radiator are communicated with the outside world, the radiator can achieve an automatic cleaning effect through rain washing, and accumulation of dust and sundries is prevented.

Description

A kind of LED radiator

Technical field

The utility model relates to a kind of radiator, especially relates to a kind of LED radiator.

Background technology

Existing LED light fixture generally comprises LED light source, heat transfer sheet and radiator, LED light source, heat transfer sheet, radiator is arranged successively in order from the bottom up, radiator comprises heat-radiating substrate and by a plurality of fin, is spaced a plurality of groups of fins that form, a plurality of groups of fins are arranged on the end face of heat-radiating substrate, fin is the scope that linear array distributes and all do not exceed heat-radiating substrate, between adjacent two fin, form heat dissipation channel, the heat dissipation channel being located along the same line is interconnected, the setting party of fin is to parallel with the length direction of heat-radiating substrate, when mounted LED lamp tool, two ends operated by rotary motion on heat-radiating substrate width has dividing plate, two dividing plates will be positioned at the heat dissipation channel sealing at heat-radiating substrate two ends, fin all and divider upright.When LED light source is luminous, the heat that LED produces is delivered on heat-radiating substrate by heat transfer sheet, and heat-radiating substrate is delivered to heat on fin again, finally by groups of fins, is delivered in air, reaches thus the object of LED light source being carried out to radiating and cooling.

But, because fin is all arranged in the scope of heat-radiating substrate, the below of the heat dissipation channel between fin is sealed by heat-radiating substrate, in heat dissipation channel, do not form upper and lower air communication channel, when heat is passed in radiator, the rear density of air heat absorption in heat dissipation channel reduces and raises leaves heat dissipation channel, and temperature lower air in heat dissipation channel below cannot be entered into heat dissipation channel by heat-radiating substrate obstruct, cause the heat of radiator to be difficult to dissipate, radiating effect is very poor, the operating temperature of LED light fixture can reach 80 ℃-90 ℃, in addition, because heat-radiating substrate two ends are provided with dividing plate, heat dissipation channel is sealed by dividing plate, extremely difficult cleaning, and LED light fixture is for a long time in outdoor environment, a large amount of dust foreign material are deposited in heat dissipation channel, these dust foreign material make the radiating effect of radiator poorer, cause LED light source to be still operated under hot environment, reduced the service life of LED light source.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of Automatic clearance function that has, the LED radiator of good heat dissipation effect.

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of LED radiator, comprise heat-radiating substrate and groups of fins, described groups of fins comprises the fin on a plurality of end faces that are disposed on described heat-radiating substrate, between fin described in adjacent two, form heat dissipation channel, described fin and the described heat-radiating substrate end parts parallel for sealing, a plurality of fin are positioned at one end of the same side and stretch out outside the edge of described heat-radiating substrate, when heat is sent to heat dissipation channel, after absorption of air heat in described heat dissipation channel, density reduces and raises to leave described heat dissipation channel, the lower air of heat dissipation channel below temperature being arranged in outside described heat-radiating substrate enters heat dissipation channel, go round and begin again.

Described fin stretches out on the end face of one end at heat-radiating substrate edge and is all provided with groove, and the described groove of the same side is located along the same line, and in the described groove of the same side, is provided with baffle plate.

The width of described baffle plate is not less than the degree of depth of described groove.

The outboard end of described groove is lower than the medial extremity of described groove.

The two ends of described fin all extend out to outside the edge of described heat-radiating substrate.

Compared with prior art, the utility model has the advantage of fin and the heat-radiating substrate end parts parallel for sealing, a plurality of fin are positioned at one end of the same side and stretch out outside the edge of heat-radiating substrate, when heat is sent to heat dissipation channel, after absorption of air heat in heat dissipation channel, density reduces and raises to leave heat dissipation channel, the lower air of heat dissipation channel below temperature being arranged in outside heat-radiating substrate enters heat dissipation channel, go round and begin again, the heat dissipation channel of up/down perforation makes near circulation of air fin, promoted the effect of heat radiation, heat dissipation channel due to radiator is communicated with outside simultaneously, this radiator can reach by rain drop erosion the effect of automatic cleaning, avoided the accumulation of dust foreign material,

On stretching out the end face of one end at heat-radiating substrate edge, fin is all provided with groove, the groove of the same side is located along the same line, while being provided with baffle plate in the groove of the same side, the air that temperature is lower runs into baffle plate and is obstructed in supplementing the process that enters heat dissipation channel, then to the middle part of heat dissipation channel, spread, make whole radiator reach evenly good radiating effect, now, during the work of LED light fixture, temperature can remain on 50 ℃-60 ℃, and radiating effect has improved 20 ℃-30 ℃ than original LED radiator;

When the width of baffle plate is not less than the degree of depth of groove, baffle plate can guide to all air that enter into heat dissipation channel the middle part of heat dissipation channel;

When the outboard end of groove is during lower than the medial extremity of groove, baffle plate is oblique to be arranged in groove, and baffle plate is away from one end of fin lower than the other end, and the ramp way that baffle plate forms makes the air that temperature is lower more easily enter in the middle of heat dissipation channel;

When the two ends of fin all extend out to outside the edge of heat-radiating substrate, make whole radiator Homogeneouslly-radiating, reach best radiating effect.

Accompanying drawing explanation

Fig. 1 is stereogram of the present utility model;

Fig. 2 is cutaway view of the present utility model.

The specific embodiment

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

Embodiment: as shown in the figure, a kind of LED radiator, comprise heat-radiating substrate 1 and groups of fins 2, groups of fins 2 comprises the fin on a plurality of end faces that are disposed on heat-radiating substrate 1, between adjacent two fin, form heat dissipation channel 3, fin and the end parts parallel of heat-radiating substrate 1 for sealing, a plurality of fin are positioned at one end of the same side and stretch out outside the edge of heat-radiating substrate 1, when heat is sent to heat dissipation channel 3, after absorption of air heat in heat dissipation channel 3, density reduces and raises to leave heat dissipation channel 3, the lower air of heat dissipation channel 3 below temperature being arranged in outside heat-radiating substrate 1 enters heat dissipation channel 3, go round and begin again, the heat dissipation channel 3 of up/down perforation makes near circulation of air fin, promoted the effect of heat radiation, heat dissipation channel 3 due to radiator is communicated with outside simultaneously, this radiator can reach by rain drop erosion the effect of automatic cleaning, avoided the accumulation of dust foreign material.

In the present embodiment, fin stretches out on the end face of one end at heat-radiating substrate 1 edge and is all provided with groove 4, the groove 4 of the same side is located along the same line, in the groove 4 of the same side, be provided with baffle plate 5, during work, the air that temperature is lower runs into baffle plate 5 and is obstructed in supplementing the process that enters heat dissipation channel 3, then to the middle part of heat dissipation channel 3, spread, make whole radiator reach evenly good radiating effect, now, during the work of LED light fixture, temperature can remain on 50 ℃-60 ℃, and radiating effect has improved 20 ℃-30 ℃ than original LED radiator.

In the present embodiment, the width of baffle plate 5 is not less than the degree of depth of groove 4, and during work, baffle plate 5 can guide to all air that enter into heat dissipation channel 3 middle part of heat dissipation channel 3.

In the present embodiment, the outboard end of groove 4 is lower than the medial extremity of groove 4, baffle plate 5 is oblique to be arranged in groove 4, and baffle plate 5 is away from one end of fin lower than the other end, and the ramp way that baffle plate 5 forms more easily enters in the middle of heat dissipation channel 3 air that temperature is lower.

In the present embodiment, the two ends of fin all extend out to outside the edge of heat-radiating substrate 1, make whole radiator Homogeneouslly-radiating, reach best radiating effect.

Claims

1. a LED radiator, comprise heat-radiating substrate and groups of fins, described groups of fins comprises the fin on a plurality of end faces that are disposed on described heat-radiating substrate, between fin described in adjacent two, form heat dissipation channel, fin described in it is characterized in that and the end parts parallel of described heat-radiating substrate for sealing, a plurality of fin are positioned at one end of the same side and stretch out outside the edge of described heat-radiating substrate, when heat is sent to heat dissipation channel, after absorption of air heat in described heat dissipation channel, density reduces and raises to leave described heat dissipation channel, the lower air of heat dissipation channel below temperature being arranged in outside described heat-radiating substrate enters heat dissipation channel, go round and begin again.

2. according to a kind of LED radiator claimed in claim 1, it is characterized in that described fin stretches out on the end face of one end at heat-radiating substrate edge is all provided with groove, the described groove of the same side is located along the same line, and in the described groove of the same side, is provided with baffle plate.

3. according to a kind of LED radiator claimed in claim 2, it is characterized in that the width of described baffle plate is not less than the degree of depth of described groove.

4. according to a kind of LED radiator claimed in claim 2, it is characterized in that the outboard end of described groove is lower than the medial extremity of described groove.

5. according to a kind of LED radiator claimed in claim 1, it is characterized in that the two ends of described fin all extend out to outside the edge of described heat-radiating substrate.