CN201885021U

CN201885021U - LED (light-emitting diode) lamp with light weight and rapid heat dissipation

Info

Publication number: CN201885021U
Application number: CN201020646878XU
Authority: CN
Inventors: 高振贤
Original assignee: ZHEJIANG TECSUN NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: Chen Yitong; Shanghai Qian Fu Industrial Co.,Ltd.
Priority date: 2010-12-08
Filing date: 2010-12-08
Publication date: 2011-06-29
Anticipated expiration: 2020-12-08

Abstract

The utility model relates to an LED streetlamp used for road illumination, which has excellent heat dissipation effect, high reliability and energy conservation. The utility model aims at the defects of poor heat dissipation effect and unfavorable structural strength caused by mechanical fixation in the prior art, and provides an LED lamp with light weight and rapid heat dissipation, which utilizes the insulating ability of an oxidation film on the surface of a radiator substrate and the excellent substrate surface adhesive force, and adopts the manner of directly soldering an LED and the substrate to achieve the purposes of improving heat dissipation effect and structural strength. The utility model provides a specific technical scheme as follows: an oxidation film insulating layer, a copper plating layer and a soldering layer are sequentially arranged between the radiator substrate and an LED lamp bead; and the LED lamp bead is soldered on the copper plating layer through the soldering layer.

Description

The LED light fixture of light weight rapid heat dissipation

Technical field

The utility model relates to the LED light fixture, especially a kind of good, high reliability energy-saving LED light fixture of heat radiation that is used for road lighting.

Background technology

Light emitting diode (LED) has advantages such as low power consuming, power saving, life-span be long, durable, thereby will be replaced traditional lighting and become following lighting source by each side is good, wherein, the LED street lamp is energy-conservation owing to it, degree of intelligence Gao Ershen is subjected to the high praise of urban construction and various enterprises and institutions, yet, change into for heat energy because state-of-the art restriction, electric energy that LED dissipates have only fraction to transform into the luminous energy major part, thereby make the temperature rise of LED joint cause luminous efficiency seriously to descend.LED is defined as service life, when the LED luminous efficiency be lower than former luminous efficiency 70% the time, can be considered the LED life termination; The LED luminous efficiency can reduce along with service time and number of times, and the development of factor seriously restricted LED light fixture such as too high LED joint Wen Zehui quickens the decay of LED luminous efficiency, and the reliable life of LED street lamp is short, thermal diffusivity is undesirable.Therefore, heat radiation becomes needs the guardian technique problem that solves in the evolution of LED light fixture.

Present most of LED light fixture heat radiation is the problem that solves circuit and heat radiation by aluminium base by mechanical method fixation on metal heat sink.Aluminium base is a kind of Metal Substrate copper-clad plate of uniqueness, has good thermal conductivity, electrical insulation properties and machining property.LED heat-radiating aluminum plate mainly is to utilize its heat-radiating substrate material itself to have preferable heat conductivity, and thermal source is derived from LED crystal grain.Therefore; from the narration of LED heat radiation approach; the LED heat-radiating substrate can be subdivided into two big classifications; be respectively LED crystal grain substrate and system circuit board; these two kinds of different heat-radiating substrates are taken advantage of respectively and are carried LED crystal grain and LED wafer; the heat energy that LED crystal grain is produced when luminous, is then absorbed by atmospheric environment to system circuit board via LED crystal grain heat-radiating substrate, to reach the diffusing effect of heat.

The drawback of this type of technology is that the combination between conducting channel and the radiator guarantees by the mechanical layer material that insulate, and causes the bad or unsettled hidden danger of quality of structural strength of heat radiation.

Summary of the invention

The utility model be primarily aimed in the prior art heat radiation bad, adopt mechanical fixation to cause the unfavorable shortcoming of structural strength, a kind of insulating properties of radiator substrate surface oxide-film and good substrate surface adhesive force of utilizing is provided, and the form of directly welding by LED and base material reaches the LED light fixture that heat radiation is good, improve the light weight rapid heat dissipation of structural strength.

Above-mentioned technical problem of the present utility model is implemented by the following technical programs: a kind of LED light fixture of light weight rapid heat dissipation, be disposed with anodized insulation layer, copper plate, soldering-tin layer between radiator base plate and the LED lamp pearl, pearl is welded on the copper plate by soldering-tin layer the LED lamp.

As preferably, described copper plate is the circuit loop shape of LED lamp pearl, and LED lamp pearl both positive and negative polarity partly welds fixing by the circuit loop shape of soldering-tin layer and copper plate.Possessing complete electric charge loop is the normal luminous necessary condition of LED lamp pearl.

As preferably, circuit loop shape part does not contact in the central point of described LED lamp pearl and the copper plate, and is welded on the copper plate by soldering-tin layer.The central point of LED lamp pearl is mainly as the passage of fixing point and heat radiation, and this copper plate is the technical barrier that is difficult for welding at present in order to solve on the anodized insulation layer.

As preferably, circuit loop shape part does not contact in the central point of LED lamp pearl and the copper plate, and is welded on the anodized insulation layer by soldering-tin layer.The central point of LED lamp pearl is guaranteeing under the well-set prerequisite mainly as the passage of fixing point and heat transfer, directly welds LED lamp pearl on the anodized insulation layer, can simplify working process.

As preferably, described radiator base plate vertically is provided with some fin.The heat that heat-radiating substrate receives, accelerate radiating rate by fin, owing to there is not the fixing insulating materials of machinery between its device substrate of heat radiation of the present utility model and the lamp pearl, its heat conductivility is good, so the thickness of fin can be littler than the thickness of fin of the prior art, alleviates the light fixture overall weight.

In sum, the utility model is compared with prior art and is had following advantage.

The utility model utilizes the anodized insulation assurance circuit on the base materials employed surface of radiator and the insulating properties between the radiator, utilize the very strong adhesive force of matrix itself to reach the heat radiation of no mechanical device again, thereby make LED crystal grain in the heat-radiation loop of atmospheric environment, not have high thermal resistance and unsettled mechanical fixation contact layer, thereby can just reach good radiating effect with radiator owing to improved heat-sinking capability greatly simultaneously with very little weight.The LED light fixture own wt that adopts the 110W that the utility model structure makes is only about 3.9KG, the weight known far below present technology.

Description of drawings

Fig. 1 is a stereogram of the present utility model.

Fig. 2 is the utility model circuit loop shape schematic diagram.

Fig. 3 is the utility model side partial sectional view.

Number in the figure: 1, LED lamp pearl; 2, circuit loop; 3, radiator; 4, anodized insulation layer; 5, radiator base plate; 6, soldering-tin layer; 7, copper plate; 8, fin; 9, central point.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Shown in Fig. 1,3, the LED light fixture of light weight rapid heat dissipation, the radiator 3 of aluminum alloy base material, by radiator base plate 5 and fin 8 vertical connecting and composing, the thickness degree of the fin 8 and power that quantity dispels the heat according to actual needs is set determines wherein, the heat energy that the good aluminum alloy base material radiator 3 of heat conductivility is produced the LED lamp when luminous reaches fin 8 through radiator base plate 5, is then absorbed by atmospheric environment, reaches the effect that heat is loose.

Radiator 3 adheres to pottery (aluminium oxide) insulating barrier that obtains by anodic oxidation, its thickness changes according to the content height of fine aluminium, be difficult to obtain the about 30rm of thicknesses of layers after anodized aluminium copper and the alusil alloy anodic oxidation, be easy to obtain thicknesses of layers after the anodized fine aluminium anodic oxidation and can reach 250-300um; The hardness of its oxidation film layer changes according to the height of copper content, and the hardness of general oxidized aluminum alloy rete is 400-600HV, the about 300HV of oxidized aluminum alloy rete that copper content is high, and the hardness of fine aluminium oxidation film layer can be up to 1000HV.Oxidation film layer also has wearability, corrosion resistance, hear resistance.

On pottery (aluminium oxide) insulating barrier of described radiator base plate 5, adopt electroless copper plating technology to generate copper plate 7; As shown in Figure 2, in copper plate 6, use laser engraving technological forming circuit, as the circuit part of LED lamp pearl; LED lamp pearl 1 both positive and negative polarity is fixing with the circuit loop shape 2 parts welding of copper plate 7 by soldering-tin layer 6, forms complete electric charge loop.

Circuit loop shape 2 parts do not contact in the central point 9 of LED lamp pearl and the copper plate 7, and be welded on the copper plate 7 by soldering-tin layer 6, the central point 9 of LED lamp pearl is mainly as the passage of fixing point and heat radiation, 95% of generation heat reached radiator base plate 5 when it worked LED lamp pearl 1, had realized not having the heat radiation of mechanical device.

Because present embodiment has solved the influence of heat radiation undesirable element, the service life and the job stability of LED street lamp have been improved greatly, thereby can just reach good radiating effect with radiator 3 owing to improved heat-sinking capability greatly simultaneously with very little weight, the 110W light fixture own wt that employing this method is made is 3.9KG only, is the minimum own wt of publish data already of going together both at home and abroad.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. the LED light fixture of a light weight rapid heat dissipation is characterized in that, is disposed with anodized insulation layer (4), copper plate (7), soldering-tin layer (6) between radiator base plate (5) and the LED lamp pearl (1), and pearl is welded on the copper plate by soldering-tin layer the LED lamp.

2. the LED light fixture of light weight rapid heat dissipation according to claim 1 is characterized in that, described copper plate is the circuit loop shape (2) of LED lamp pearl, and LED lamp pearl both positive and negative polarity partly welds fixing by the circuit loop shape of soldering-tin layer and copper plate.

3. the LED light fixture of light weight rapid heat dissipation according to claim 1 is characterized in that, circuit loop shape part does not contact in the central point (9) of described LED lamp pearl and the copper plate, and is welded on the copper plate by soldering-tin layer.

4. the LED light fixture of light weight rapid heat dissipation according to claim 1 is characterized in that, circuit loop shape part does not contact in the central point of LED lamp pearl and the copper plate, and is welded on the anodized insulation layer by soldering-tin layer.

5. according to the LED light fixture of claim 1 or 3 or 4 described light weight rapid heat dissipations, it is characterized in that described radiator base plate vertically is provided with some fin (8).