CN201428972Y

CN201428972Y - Light-emitting diode lamp cluster

Info

Publication number: CN201428972Y
Application number: CN2009203060403U
Authority: CN
Inventors: 王学邦
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-12
Filing date: 2009-07-12
Publication date: 2010-03-24
Anticipated expiration: 2019-07-12

Abstract

The utility model discloses an improved invention of a light-emitting diode lamp cluster, and the light-emitting diode lamp cluster comprise a light-emitting diode bead (1), a circuit board (2) and aheat abstractor, wherein the light-emitting diode bead is connected with the circuit board through a base pin (3). The light-emitting diode lamp cluster is characterized in that the heat abstractor iscomposed of an insulated heat conducting layer (4) and a metal heat radiation layer (5), wherein the light-emitting diode base pin is coated with the insulated heat conducting layer, and the metal heat radiation layer is clung with the insulated heat conducting layer. The insulated heat conducting layer plays a role in insulating case heat conduction, thereby the direct contact between the light-emitting diode base pin and the metal heat radiation layer is avoided and the heat on the light-emitting diode base pin can be transferred to the metal heat radiation layer, by utilizing the excellentconductivity of metal, the heat produced by a light-emitting lamp can be transferred into air, thereby playing a better role in heat radiation and prolonging the life time of light-emitting diodes.

Description

A kind of LED lamp group

Technical field:

The utility model relates to a kind of improvement invention of LED lamp group.

Background technology:

The LED light fixture has characteristics such as luminous efficiency height, long service life, is widely used.And the quality of LED lamp heat dispersion is the decision key in its service life, look into Chinese patent database, wherein the patent No. is 200520059798.3, the utility model patent that name is called " the LED lamp group that has heat abstractor " discloses following content: a kind of LED lamp group that has heat abstractor, comprise pcb board (2), LED lamp pearl (202), the pin of described LED lamp pearl (202) is contained in and forms a plurality of legs (201) on the described pcb board (2) and at its back side, it is characterized in that, also comprise the heat abstractor (1) that constitutes by Heat Conduction Material that matches with the size shape of described pcb board (2) and closely contact with its back side, described heat abstractor (1) is provided with the leg groove (101) that is used to hold described leg (201) with the contacted one side in the back side of described pcb board (2), and described leg (201) is separated with the surface of described leg groove (101).This utility model utilizes heat abstractor that pcb board is carried out heat conduction, and the pin of LEDLED lamp pearl is not carried out the heat conduction processing, but the heat that the LED lamp produces mainly transmits by pin, and the heat on the pcb board and few, therefore this utility model does not fundamentally solve the heat dissipation problem of LED lamp, and still there is the problem of lacking in poor radiation, service life in this kind LED lamp.

Summary of the invention:

In view of the existing technical problem of background technology, technical problem to be solved in the utility model provides a kind of perfect heat-dissipating, the LED lamp of long service life.

In order to solve the problems of the technologies described above, the utility model adopts following scheme to realize: this kind LED lamp, include LED lamp pearl, circuit board and heat abstractor, described LED lamp pearl is connected with circuit board by pin, it is characterized in that described heat abstractor includes insulating heat-conductive layer and metallic radiating layer, described insulating heat-conductive layer is with the pin parcel of LED, and described metallic radiating layer and insulating heat-conductive laminating close.

The surface of described circuit board also is coated with the insulating heat-conductive layer.

Described insulating heat-conductive layer adopts silica gel material.

The another side of described metallic radiating layer is connected with fin.

Described circuit board is connected with a constant current and drives.

The utility model adopts the pin parcel of insulating heat-conductive layer with LED, thereby prevent that pin from directly contacting with metallic radiating layer, the heat that LED lamp pearl produces is passed to the insulating heat-conductive layer by pin, again by the insulating heat-conductive layer with the heat transferred metallic radiating layer, utilize the metal good heat-conducting that the heat that the LED lamp produces is delivered in the air, so just played the effect of heat radiation; The insulating heat-conductive layer together covers the formation plane with pin and circuit board, is convenient to like this fit tightly with metallic radiating layer; And silica gel material not only has good thermal conductivity and insulating properties, and this kind material is very soft, and metallic radiating layer after the pressing, just can be fitted with it closely, and contact-making surface is big, and heat conduction just soon; In like manner, its area of dissipation of the fin that is connected with metallic radiating layer is big, and rapid heat dissipation so just can better pass the heat of generations such as LED lamp; Described constant current drives adjustable current, voltage, to be fit to the little LED lamp of power.The acting in conjunction of good performance of heat dissipation and constant-current supply has effectively prolonged service life of LED lamp.

Description of drawings:

Further describe relevant details of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is embodiment one structural representation of the present utility model;

Fig. 2 is embodiment two structural representations of the present utility model;

Fig. 3 is embodiment three structural representations of the present utility model;

Fig. 4 is embodiment four structural representations of the present utility model.

The specific embodiment:

This kind LED lamp group, include LED lamp pearl 1, circuit board 2 and heat abstractor, described LED lamp pearl 1 is connected with circuit board 2 by pin 3, and described circuit board 2 drives with constant current and is connected, do not draw among the figure, suitable, stable voltage also is the assurance of LED lamp length in service life; Described heat abstractor includes insulating heat-conductive layer 4, metallic radiating layer 5 and fin 6, described insulating heat-conductive layer 4 can adopt silica gel material, silica gel has good thermal conductivity and insulating properties, safe in utilization, convenient, efficient is high, described metallic radiating layer 5 can adopt aluminium sheet or copper coin and so on to have the material of strong thermal conductivity, the heat that the LED lamp is produced is sent in the air, thereby effectively reduces the temperature of LED lamp, prolongs its service life.With reference to Fig. 1, embodiment one, and described silica gel covers the pin 3 of circuit board 2 with LED fully, forms smooth layer of silica gel 4, and the another side of described layer of silica gel 4 and metallic radiating layer 5 fit tightly, and the another side of described metallic radiating layer 5 is connected with fin 6; With reference to Fig. 2, embodiment two, the surface of described circuit board 2 is covered by silica gel 4, the pin 3 of LED is by silica gel 4 parcels, but the termination of pin 3 is not covered fully by silica gel 4, and the effect of described silica gel is that pin 3 and metallic radiating layer 5 are isolated, but simultaneously again can be with the heat transferred metallic radiating layer 5 on the pin 3, so 4 needs of silica gel contact with pin 3 and make it not with metallic radiating layer 5 directly contact just can, silica gel 4 need not pin 3 is covered fully.

When the LED lamp uses, the heat of its generation is along with pin 3 passes to layer of silica gel 4, heat on the same circuit board 2 also passes to layer of silica gel 4, then heat transferred metallic radiating layer 5 is dispelled the heat by layer of silica gel 4, and the fin 6 that is connected with metallic radiating layer 5, because its area of dissipation is big, heat dispersion is better, most of heat all can be passed in the air.

With reference to Fig. 3, embodiment three, and described silica gel 4 wraps up pin 3 fully, and described circuit board 2 and silica gel 4 fit tightly with metallic radiating layer 5, and the another side of described metallic radiating layer 5 is connected with fin 6; With reference to Fig. 4, embodiment four, with embodiment two in like manner, the pin 3 of described LED is by silica gel 4 parcel, but the termination of pin 3 do not cover by silica gel 4, described circuit board 2 and silica gel 4 all fit tightly with metallic radiating layer 5.Because the circuit board 2 among the embodiment three, four directly contacts with metallic radiating layer 5, therefore the heat on the circuit board 2 is directly passed by metallic radiating layer 5, thermal diffusivity is better like this, heat on the pin 3 then earlier passes to metallic radiating layer 5 by silica gel 4, by metallic radiating layer 5 heat is passed again.

The utility model is compared with prior art practical, and has fundamentally solved the heat dissipation problem of LED lamp, thereby prolongs LED The service life of lamp.

Claims

1. LED lamp group, include LED lamp pearl (1), circuit board (2) and heat abstractor, described LED lamp pearl (1) is connected with circuit board (2) by pin (3), it is characterized in that described heat abstractor includes insulating heat-conductive layer (4) and metallic radiating layer (5), described insulating heat-conductive layer (4) is with pin (3) parcel of LED, and described metallic radiating layer (5) is fitted with insulating heat-conductive layer (4).

2. LED lamp group according to claim 1 is characterized in that the surface of described circuit board (2) also is coated with insulating heat-conductive layer (4).

3. LED lamp group according to claim 1 is characterized in that described insulating heat-conductive layer (4) adopts silica gel material.

4. LED lamp group according to claim 1 is characterized in that the another side of described metallic radiating layer (5) is connected with fin (6).

5. according to the described LED lamp of each claim of claim 1 to 4 group, it is characterized in that described circuit board (2) is connected with a constant current and drives.