CN203478154U

CN203478154U - LED radiator

Info

Publication number: CN203478154U
Application number: CN201320585911.6U
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 frame and a cooling fin group. The cooling fin group is composed of a plurality of cooling fins, the cooling fins are arranged on at least one side face of the heat dissipation frame at intervals, a heat dissipation channel is formed between every two adjacent cooling fins, the arrangement direction of the cooling fins is vertical to the height direction of the heat dissipation frame, and the bottom ends of the cooling fins are higher than the bottom of the heat dissipation frame by certain distances. When heat is transmitted to the heat dissipation channels, air in the heat dissipation channels absorbs the heat, then density of the air decreases, the air rises and leaves the heat dissipation channels, air with a lower temperature on the lower portions of the heat dissipation channels 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 the air around the cooling fins to be circulated, and the heat dissipation effect is promoted.

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 comprises aluminium base and is laid in the LED illuminating circuit on the front of aluminium base, heat transfer sheet is fixedly installed on aluminium base, the bottom surface of heat transfer sheet and the laminating of the back side of aluminium base, radiator comprises heat-radiating substrate and groups of fins, the bottom surface of heat-radiating substrate and the laminating of the end face of heat transfer sheet, groups of fins is comprised of the fin on a plurality of end faces that are disposed on heat-radiating substrate, forms the heat dissipation channel of radiator between every adjacent two fin.When LED light source is luminous, the heat that LED produces is delivered on heat transfer sheet by aluminium base, heat transfer sheet is delivered to heat on the heat-radiating substrate of radiator again, then be delivered in groups of fins, finally the heat dissipation channel by radiator is delivered in air, reaches thus the object of LED light source being carried out to radiating and cooling.

When mounted LED lamp tool, LED illuminating circuit, aluminium base, heat transfer sheet and radiator are arranged according to order from top to bottom, end face laminating due to heat-radiating substrate bottom surface and heat transfer sheet, the below of heat dissipation channel is closed, 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, the lower air of heat dissipation channel below temperature but cannot enter in heat dissipation channel, make the heat of radiator be difficult to dissipate, radiating effect is very poor, thereby 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 and a kind ofly can forms upper and lower air communication channel, 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 radiation rack and groups of fins, described groups of fins is comprised of a plurality of fin, described a plurality of fin are disposed at least one side of described heat radiation rack, between every adjacent two fin, form heat dissipation channel, the arragement direction of described fin is vertical with the short transverse of described heat radiation rack, the bottom of described fin exceeds bottom one segment distance of described heat radiation rack, when heat transfers in described heat dissipation channel, the rear density of air heat absorption in heat dissipation channel reduces and raises leaves heat dissipation channel, the lower air of temperature of heat dissipation channel below enters in heat dissipation channel, go round and begin again.

In described heat radiation rack, be provided with cavity, in described cavity, cooling fluid is housed, the evaporating temperature of described cooling fluid is 40-60 degree, when cooling fluid heating temperature is increased to evaporating temperature, described cooling fluid becomes gas and rises, and described gas transfer heat is given the side of described heat radiation rack, the side of described heat radiation rack transfers heat to described fin, now, the temperature of described gas is reduced to evaporating temperature and becomes below liquid and fall back to described cavity bottom, goes round and begins again.

In described cavity, be provided with metal cavernous body.

In described cavity, be provided with a plurality of dividing plates, described dividing plate is divided into a plurality of regions by described cavity, is provided with metal cavernous body in the region described in each.

Described metal cavernous body is loose structure.

Compared with prior art, the utility model has the advantage of and comprise heat radiation rack and groups of fins, groups of fins is comprised of a plurality of fin, a plurality of fin are disposed at least one side of heat radiation rack, between every adjacent two fin, form heat dissipation channel, the arragement direction of fin is vertical with the short transverse of heat radiation rack, the bottom of fin exceeds bottom one segment distance of heat radiation rack, when heat transfers in heat dissipation channel, the rear density of air heat absorption in heat dissipation channel reduces and raises leaves heat dissipation channel, the lower air of temperature of heat dissipation channel below enters in 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,

In heat radiation rack, be provided with cavity, cooling fluid is housed in cavity, and the evaporating temperature of cooling fluid is 40-60 degree, when cooling fluid heating temperature is increased to evaporating temperature, cooling fluid becomes gas and rises, gas transfer heat is to the side of heat radiation rack, and the side of heat radiation rack transfers heat to fin, now, the temperature of gas is reduced to evaporating temperature and becomes below liquid and fall back to cavity bottom, go round and begin again, improved the heat-transfer effect of radiator, reduced the temperature difference between LED light source and fin;

While being provided with metal cavernous body in described cavity, metal cavernous body can adsorb cooling fluid;

In cavity, be provided with a plurality of dividing plates, dividing plate is divided into a plurality of regions by cavity, while being provided with metal cavernous body in each region, cooling fluid is distributed in regional under the absorption of metal cavernous body, even if radiator tilts, cooling fluid can not flow to one end that heat radiation rack is lower yet, causes radiator heat-dissipation effect inhomogeneous;

When metal cavernous body has loose structure, metal cavernous body can adsorb cooling fluid better.

Accompanying drawing explanation

Fig. 1 is stereogram of the present utility model;

Fig. 2 is the cutaway view of heat radiation rack.

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 radiation rack 1 and groups of fins, groups of fins is comprised of a plurality of fin 2, a plurality of fin 2 are disposed at least one side of heat radiation rack 1, between every adjacent two fin 2, form heat dissipation channel 3, the arragement direction of fin 2 is vertical with the short transverse of heat radiation rack 1, the bottom of fin 2 exceeds bottom one segment distance of heat radiation rack 1, when heat transfers in heat dissipation channel 3, the rear density of air heat absorption in heat dissipation channel 3 reduces and raises leaves heat dissipation channel 3, the lower air of temperature of heat dissipation channel 3 belows enters in 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.

In the present embodiment, in heat radiation rack 1, be provided with cavity 4, in cavity 4, cooling fluid is housed, the evaporating temperature of cooling fluid is 40-60 degree, when cooling fluid heating temperature is increased to evaporating temperature, cooling fluid becomes gas and rises, gas transfer heat is to the side of heat radiation rack 1, the side of heat radiation rack 1 transfers heat to fin, and the temperature of the air in heat dissipation channel 3 raises, now, the temperature of gas is reduced to and under evaporating temperature, becomes liquid and fall back to cavity 4 bottoms, go round and begin again, improved the heat-transfer effect of radiator, reduced the temperature difference between LED light source and fin.

In the present embodiment, be provided with metal cavernous body 6 in cavity 4, metal cavernous body 6 can adsorb cooling fluid.

In the present embodiment, in cavity 4, be provided with a plurality of dividing plates 5, dividing plate 5 is divided into a plurality of regions by cavity 4, in each region, be provided with metal cavernous body 6, cooling fluid is distributed in regional under the absorption of metal cavernous body 6, even if radiator tilts, cooling fluid can not flow to one end that heat radiation rack 1 is lower yet, causes radiator heat-dissipation effect inhomogeneous.

In the present embodiment, metal cavernous body 6 has loose structure, can adsorb better cooling fluid.

Claims

1. a LED radiator, it is characterized in that comprising heat radiation rack and groups of fins, described groups of fins is comprised of a plurality of fin, described a plurality of fin are disposed at least one side of described heat radiation rack, between every adjacent two fin, form heat dissipation channel, the arragement direction of described fin is vertical with the short transverse of described heat radiation rack, the bottom of described fin exceeds bottom one segment distance of described heat radiation rack, when heat transfers in described heat dissipation channel, the rear density of air heat absorption in heat dissipation channel reduces and raises leaves heat dissipation channel, the lower air of temperature of heat dissipation channel below enters in 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 being provided with cavity in described heat radiation rack, in described cavity, cooling fluid is housed, the evaporating temperature of described cooling fluid is 40-60 degree, when cooling fluid heating temperature is increased to evaporating temperature, described cooling fluid becomes gas and rises, gas transfers heat to the side of described heat radiation rack, the side of described heat radiation rack is given and is transferred heat to described fin, now, the temperature of described gas is reduced to evaporating temperature and becomes below liquid and fall back to described cavity bottom, go round and begin again.

3. according to a kind of LED radiator claimed in claim 2, it is characterized in that being provided with metal cavernous body in described cavity.

4. according to a kind of LED radiator claimed in claim 3, it is characterized in that being provided with a plurality of dividing plates in described cavity, described dividing plate is divided into a plurality of regions by described cavity, is provided with metal cavernous body in the region described in each.

5. according to a kind of LED radiator claimed in claim 3, it is characterized in that described metal cavernous body is loose structure.