CN203162893U

CN203162893U - Led lamp

Info

Publication number: CN203162893U
Application number: CN2013201383064U
Authority: CN
Inventors: 江素贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-08-28
Anticipated expiration: 2023-03-19

Abstract

The utility model discloses an LED lamp which comprises a metal cover, a circuit layer and an LED. The circuit layer is arranged on the metal cover through a heat-conduction insulation glue layer, and the LED is welded on the circuit layer. The packed LED is arranged on the metal cover so as to remove an aluminum substrate. In radiation, the LED is directly adhered and welded to the metal cover so as to prevent the aluminum substrate from serving as a medium to conduct heat. Thus, the LED is direct and quick in radiation. In cost, the aluminum substrate is removed, so that cost of the LED lamp is obviously reduced, and popularization of environmental-protection products is facilitated.

Description

The LED light fixture

Technical field

The utility model relates to a kind of LED light fixture, relates in particular to a kind of LED light fixture that aluminium base and radiating effect increase and cost reduce that omits, and belongs to the LED application.

Background technology

LED needs suitable temperature conditions during operation, if operating ambient temperature is higher, the performance of LED will be affected, and so, will shorten the service life of LED.As is known in the industry, the electric energy that led chip consumes has only about 20% to be converted into luminous energy, and about 80% are converted into heat energy.How a large amount of heat energy is distributed and become the long-life key of LED.Present way is to paste in LED encapsulation back to be welded on the aluminium base, and then aluminium base is installed on the aluminium cover, so that heat radiation.Aluminium base is divided into 3 layers: one deck is circuit layer, and two layers is heat-conducting insulation material, and three layers is aluminium sheet.Ground floor is done circuit usefulness, and the second layer is insulation and conductive force, and the 3rd layer is to install and conductive force again.The method that aluminium base is installed on the aluminium cover has mechanical type to install, and also is that aluminium base is embedded in the draw-in groove at aluminium cover two ends; Another kind method is for directly pasting aluminium base on the aluminium cover by conduction oil.

From the heat radiation angle, no matter be that the aluminium base mechanical type is installed on the aluminium cover, still paste on the aluminium cover, its aluminium base heat conduction is limited in one's ability to the aluminium cover, if can not well the heat on the aluminium base be passed on the aluminium cover, finally pass in the atmosphere, that will have a strong impact on the service life of LED.From the angle of cost, aluminum current substrate cost is higher, and high aluminium base cost makes that price is just further aggravated its cost inferior position than higher LED light fixture originally, has influenced the popularization of energy-conserving product, is unfavorable for environmental protection.

Summary of the invention

The purpose of this utility model is to provide a kind of LED light fixture, to solve the problem that is unfavorable for product promotion that problem that heat-sinking capability that existing LED light fixture exists LED limited and that cause shortens service life and product cost are higher and cause.

For above-mentioned purpose, the LED light fixture that the utility model provides comprises metal cap, circuit layer and LED, and wherein, described circuit layer is located on the described metal cap by the heat conductive insulating glue-line, and described LED is welded on the described circuit layer.

According to a kind of preferred embodiment of above-mentioned LED light fixture, wherein, described circuit layer is the copper foil circuit layer.

According to a kind of preferred embodiment of above-mentioned LED light fixture, wherein, described metal cap is the aluminum metal cover.

According to a kind of preferred embodiment of above-mentioned LED light fixture, wherein, described metal cap comprises arcwall face and horizontal plane, and described horizontal plane is covered in the concave side of described arcwall face.

According to a kind of preferred embodiment of above-mentioned LED light fixture, wherein, described metal cap is strip.

According to a kind of preferred embodiment of above-mentioned LED light fixture, wherein, described circuit layer and described heat conductive insulating glue-line are located on the horizontal plane of described metal cap successively.

According to a kind of preferred embodiment of above-mentioned LED light fixture, wherein, the thickness of described heat conductive insulating glue-line is 0.075mm.

Be located on the metal cap by the LED that will encapsulate, omitted the use of aluminium base, aspect heat radiation, LED directly pastes and is welded on the metal cap, has removed media heating in the aluminium base conduct from, and the LED heat radiation is just more direct, quick.Aspect cost, remove aluminium base and make the price of LED light fixture be able to obvious reduction, be beneficial to popularizing of environment-friendly products.

Description of drawings

Fig. 1 is the decomposition texture schematic diagram of the utility model preferred embodiment.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Fig. 1 shows the core texture of the utility model preferred embodiment, and what need explanation in advance is, because the utility model is not embodied in parts such as lampshade, lamp holder to the main contribution of prior art, so Fig. 1 and not shown these type of parts.But this does not represent concrete enforcement of the present utility model and must comprise this base part or comprise this base part scarcely; for a person skilled in the art; every utilized the utility model to omit the technical scheme of aluminium base and can think easily and any LED light fixture, all should be included within the protection domain of the present utility model.

As shown in Figure 1, the utility model preferred embodiment comprises metal cap 3, circuit layer 1 and LED (not shown), and circuit layer 1 is located on the metal cap 3 by heat conductive insulating glue-line 2, and LED is welded on the circuit layer 1.

For conduction, the capacity of heat transmission that increases this preferred embodiment, circuit layer 1 is the copper foil circuit layer.Metal cap 3 is the aluminum metal cover.

The metal cap 3 of this preferred embodiment comprises arcwall face 32 and horizontal plane 31, and circuit layer 1 and heat conductive insulating glue-line 2 are located on the horizontal plane 31 of metal cap 3 successively, and horizontal plane 31 is covered in the concave side of arcwall face 32.Metal cap 3 and on heat conductive insulating glue-line 2, circuit layer 1 all be strip.Certainly component shape shown in Figure 1 is example only, but not the utility model is limited, and in other embodiments, the utility model can be circle, rectangle or irregular shape etc.

Directly paste after this preferred embodiment has encapsulated LED and be welded on the metal cap 3 intermediary's heat transfer object such as removal aluminium base.In other embodiments,, LED also namely pastes the final heat radiation position that is welded in light fixture.

When making this preferred embodiment, aluminium 6063-T5 extrusion modling is for example adopted in the moulding of advanced row metal cover 3, after the moulding according to the length requirement sawing.

Then, insulating heat-conductive glue-line 2 is pressed on the horizontal plane 31 of metal cap 3, adopt the pressing machine that the PP of full glue is added the epoxy resin additive and press on the horizontal plane 31, control this layer thickness about 0.075mm.

Then, cover process for copper, Copper Foil is rolled on the metal cap 3 that is covered with heat conductive insulating glue-line 2; Because epoxy resin and Copper Foil have fabulous cohesive, adhesive strength and the operating temperature of Copper Foil are higher, can be in the molten tin of 260 ° of C immersed solder and do not have foaming (cover process for copper and can also adopt the cathode copper method).

Then, the line design of integrated circuit board is printed as film with litho machine, covers earlier on substrate with the photo-polymerization type photosensitive dry film then, lid layer circuit film exposes by it more above, and it is light tight that the place of exposure is black, otherwise then be transparent (circuit pack).Through development step (using the unhardened dry film of sodium carbonate liquor flush away), allowing does not need the Copper Foil of dry film protection to expose.

Then, use copper etching liquor (chemicals of corrosion copper) that substrate is carried out etching.Need before the corrosion earlier metal cap 3 to be protected, with the epoxy plate of 0.3mm thickness, size is identical with metal cap 3, and all around with the adhesive tape sealing, compacting is in case solution infiltrates.

Then, go up anti-welding lacquer.So just circuit layer 1 is located on the aluminium cover 3.

Then, welding LED adopts chip mounter that packaged LED is located on the circuit layer 1 one by one.Load onto miscellaneous parts such as drive circuit at last.

In sum, the utility model directly pastes LED and is welded in metal cap (circuit layer on it in other words) upward or on the light fixture heat dissipating housing, improves the LED radiating effect greatly, reduces the use of aluminium base, has reduced cost.This shows that the utility model can prolong the service life of LED, reduce user's application cost and the production cost that reduces manufacturer, be conducive to the popularization of environment-friendly products.

As known by the technical knowledge, the utility model can be realized by other the embodiment that does not break away from its spiritual essence or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.

Claims

1. a LED light fixture comprises metal cap, circuit layer and LED, it is characterized in that, described circuit layer is located on the described metal cap by the heat conductive insulating glue-line, and described LED is welded on the described circuit layer.

2. LED light fixture according to claim 1 is characterized in that, described circuit layer is the copper foil circuit layer.

3. LED light fixture according to claim 1 is characterized in that, described metal cap is the aluminum metal cover.

4. LED light fixture according to claim 1 is characterized in that, described metal cap comprises arcwall face and horizontal plane, and described horizontal plane is covered in the concave side of described arcwall face.

5. LED light fixture according to claim 4 is characterized in that, described metal cap is strip.

6. LED light fixture according to claim 4 is characterized in that, described circuit layer and described heat conductive insulating glue-line are located on the horizontal plane of described metal cap successively.

7. LED light fixture according to claim 1 is characterized in that, the thickness of described heat conductive insulating glue-line is 0.075mm.