CN101059237A

CN101059237A - LED lamp self-heat irradiation device

Info

Publication number: CN101059237A
Application number: CNA200710009060XA
Authority: CN
Inventors: 诸建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-03
Filing date: 2007-06-03
Publication date: 2007-10-24

Abstract

The present invention relates to a LED lighting apparatus self-cooling device, it includes LED, radiating fins, radiating cavity, air inlet port and air outlet port, among them the radiating cavity is connected with atmosphere through conduits or connected with atmosphere directly, the upper of inlet port is equipped with air outlet port. The invention uses the double radiating technology of radiating fins and radiating cavity, on the one hand radiating fins are exposed in atmosphere directly to dissipate heat; on the other hand, the air in radiating cavity absorbs the heat generated by LED, because of thermal shrinkage and thermal expansion, the heat and the air in atmosphere generates directional flow through conduits, the heat generated by LED can be dissipated into environmental air in time effectively. The self-cooling device has advantages of using air directional flow to dissipating heat, good dissipating heat effect, simple structure and lower cost, it can solve the dissipating heat issue of LED lighting apparatus and apply to various LED lighting apparatus widely.

Description

A kind of LED lamp self-heat irradiation device

Technical field

The invention belongs to a kind of heat abstractor, relate in particular to a kind of LED lamp self-heat irradiation device.

Background technology

From the end of the nineties in last century, white light LEDs has obtained fast development, its be expected to become the 4th generation illumination light source.Different with the luminescence mechanism of traditional lighting light sources such as incandescent lamp, fluorescent lamp, LED belongs to electroluminescent (EL) device, and its heat can not heat loss through radiation, thereby causes device temperature too high.At present, power type white light LED can only be converted into luminous energy with about 20% electric energy, and remaining 80% energy changes into heat energy.Along with the increase of LED power, quantity of heat production increases, and bad if heat dissipation problem solves, heat concentrates in the small-sized chip, makes that the chip internal temperature is more and more higher.The too high meeting of chip temperature brings many problems: (1) quickens device aging, reduction of service life, even also can cause chip to burn; (2) make the wavelength generation red shift of blue-ray LED, and colourity, the colour temperature of white light LEDs produced material impact,, departed from the absworption peak of fluorescent material, will cause the fluorescent material quantum efficiency to reduce, influence light extraction efficiency if wavelength shift is too much; (3) temperature also has a significant impact the radiation characteristic of fluorescent material, along with temperature rises, the fluorescent material quantum efficiency reduces, bright dipping reduces, radiation wavelength also can change, the change of fluorescent material radiation characteristic also can cause the variation of white light LEDs colour temperature, colourity, and higher temperature also can be quickened the aging of fluorescent material.This shows that one of bottleneck of great power LED development is the heat radiation of device.

At present, the LED lamp heat-radiating device generally adopts monolithic construction, adopts the aluminium alloy moulding, be band LED lamp installed surface heat radiation rack on one side, another side is provided with the polylith fin, one or more LED lamps can be fixed on the heat radiation rack, by the fin heat radiation, be installed in the lamp housing.Yet there is high material consumption in the monoblock type heat abstractor, and production cost high the deficiency that bothers is installed, and weight is bigger, is difficult to be applied in these occasions strict to weight such as street lamp, garden lamp, suspension lamp when being combined into light fixture.In addition, install the radiating efficiency that fan also can improve fin additional, but can increase the cost of LED light fixture like this, and cause the waste of the energy, also science not.

Summary of the invention

The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of free air guided mobile heat radiation, good heat dissipation effect, simple in structure, lower-cost LED lamp self-heat irradiation device of utilizing is provided.

For achieving the above object, the technical solution used in the present invention is: the LED lamp self-heat irradiation device, including LED, fin, LED is connected with fin, this heat abstractor has a heat radiation chamber, there is air inlet in the heat radiation chamber, the heat radiation chamber is communicated with atmosphere by conduit or directly communicates with atmosphere, is formed with the gas outlet above air inlet.

The heat radiation chamber is formed by the fin sealing.

Heat radiation surface, chamber is fixed with heat radiating fin structure.

Heat radiation chamber or conduit are at least one.

Fin directly forms outer shelly, as the shell of light fixture.

Fin is one or more in metal fin, ceramic heat-dissipating sheet, the alloy fin.

Because the dual heat dissipation technology of fin with the heat radiation chamber adopted in invention, fin is directly exposed in the atmosphere and dispels the heat on the one hand; On the other hand, the heat that absorption of air LED produces in the heat radiation chamber produces directed flow owing to expand with heat and contract with cold by the air in conduit and the atmosphere, can effectively be dispersed into the heat that LED produced in the surrounding air timely.The present invention can effectively solve the heat dissipation problem of LED light fixture, and simple in structure, cost is lower, can be widely used in the various LED light fixtures.

Description of drawings

Fig. 1 is the structural representation of LED street lamp self-heat irradiation device;

Fig. 2 be among Fig. 1 fin with the heat radiation chamber schematic diagram;

Fig. 3 is the structural representation that LED hangs the lamp self-heat irradiation device.

The figure number explanation

1 ... fin 2 ... LED 3 ... heat-conducting glue

4 ... gas outlet 5 ... upper conduit 6 ... downcomer

7 ... air inlet 8 ... top fin 9 ... the lower part fin

10 ... heat radiation chamber 11 ... lower part fin 12 ... air inlet

13 ... heat radiation chamber 14 ... conduit 15 ... .. gas outlet

16 ... the top fin

The specific embodiment

The invention will be further described below in conjunction with the specific embodiment:

Embodiment 1 is as depicted in figs. 1 and 2: this LED street lamp self-heat irradiation device comprises fin 1 and heat radiation chamber 10, and heat radiation chamber 10 is communicated with atmosphere by conduit 5,6, and fin 1 closely is connected by heat-conducting glue 3 with LED 2.Top fin 8 is directly exposed in the atmosphere, and this heat abstractor has a heat radiation chamber, and fin 9 sealing backs in lower part form heat radiation chamber 10.The heat radiation chamber is communicated with atmosphere by one or more conduits or directly communicates with atmosphere, forms gas port aloft, forms air inlet at lower.The conduit that communicates with atmosphere is two, and conduit is at least one, is respectively conduit 5,6, forms gas port 4 on the street lamp top, forms air inlet 7 in the street lamp bottom.

Wherein, fin 1 is made up of aluminium alloy, and certainly, fin also can be common metal or pottery, also can be the mutual combination of these materials.The quantity in heat radiation chamber 10 is 30, also can be simultaneously the arbitrary value in 10～100, and top fin 8 forms outer shelly, direct shell as the LED street lamp.

Embodiment 2 is as shown in Figure 3: this LED hangs lamp self-heat irradiation device and comprises lower part fin 11, top fin 16 and heat radiation chamber 13, heat radiation chamber 13 is communicated with atmosphere by conduit 14, LED places in the lower part fin 11, closely is connected by heat-conducting glue with lower part fin 11.Lower part fin 11 is directly exposed in the atmosphere, formation heat radiation chamber 13, top fin 16 sealing back, and heat radiation chamber 13 directly communicates with atmosphere and forms air inlet 12, and conduit 14 forms gas port 15 on suspension lamp top.

Wherein, fin 11 and 16 is made up of aluminium alloy, and certainly, fin also can be common metal or pottery, also can be the mutual combination of these materials.The quantity in heat radiation chamber 13 is 1, also can be simultaneously the arbitrary value in 1～50, and lower part fin 11 forms outer shelly, direct shell as the LED lamp.

Claims

1, a kind of LED lamp self-heat irradiation device, include LED, fin, LED and be connected with fin, it is characterized in that this heat abstractor has a heat radiation chamber, there is air inlet in the heat radiation chamber, the heat radiation chamber is communicated with atmosphere by conduit or directly communicates with atmosphere, is formed with the gas outlet above air inlet.

2, a kind of LED lamp self-heat irradiation device according to claim 1 is characterized in that described heat radiation chamber is formed by the fin sealing.

3, a kind of LED lamp self-heat irradiation device according to claim 1 and 2 is characterized in that surface, described heat radiation chamber is fixed with heat radiating fin structure.

4, a kind of LED lamp self-heat irradiation device according to claim 1 is characterized in that described heat radiation chamber or conduit are at least one.

5, a kind of LED lamp self-heat irradiation device according to claim 3 is characterized in that described fin directly forms outer shelly, as the shell of light fixture.

6, a kind of LED lamp self-heat irradiation device according to claim 1 is characterized in that described fin is one or more in metal fin, ceramic heat-dissipating sheet, the alloy fin.