CN202419611U

CN202419611U - Heat dissipation device of light-emitting diode (LED) light source

Info

Publication number: CN202419611U
Application number: CN2012200638856U
Authority: CN
Inventors: 陆林轩; 许永明
Original assignee: Chaoan Xinghui Arts & Crafts Co ltd
Current assignee: Chaoan Xinghui Arts & Crafts Co ltd
Priority date: 2012-02-27
Filing date: 2012-02-27
Publication date: 2012-09-05
Anticipated expiration: 2022-02-27

Abstract

The utility model relates to a heat dissipation device of a light-emitting diode (LED) light source, which is designed to solve the defects that the existing LED light source has low heat dissipation efficiency and a short service life, comprises an LED electronic component and a ceramic base, and is characterized in that a conduction circuit and a pad which are formed by printing electric conduction silver paste are arranged on the ceramic base, and the LED electronic component is connected with the conduction circuit through the pad. The heat dissipation device has a simple structure, high heat dissipation efficiency and a small size, the service life of an LED lamp which is produced by adopting the structure of the heat dissipation device is long, and the heat dissipation device can be widely applied to the LED illumination field, particularly high-power LED illumination.

Description

The led light source heat abstractor

Technical field

The utility model relates to a kind of led light source, specifically a kind of led light source heat abstractor.

Background technology

Led light source has long, advantages such as light efficiency is high, radiationless and low-power consumption of life-span, yet because the LED volume is little, heating is high, makes the heat dissipation problem of high-powered LED lamp become very outstanding.At present the high-powered LED lamp of volume production exists and is nothing like theoretical value actual life because of failing effectively to solve heat dissipation problem, and cost performance is lower than the awkward situation of conventional lamp.The heat dissipation problem of high-power LED light source becomes the difficult problem that industry needs to be resolved hurrily.

Existing LED heat sink for lamp mainly is that the heat energy that adopts aluminium base (MCPCB) as heat-conducting medium LED to be sent passes through radiator (metal, pottery or plastic material) heat radiation; Its structure is as shown in Figure 1; That is: coat insulation material layer successively at the aluminium base upper surface; The copper foil layer order wire circuit is welded on LED on the copper foil layer order wire circuit then; Then coat heat-conducting medium such as silicone grease, silica gel etc. at the aluminium base lower surface, again radiator is installed in the aluminium base lower surface, improve the efficient of heat radiation through the contact area that increases aluminium base and radiator.Said structure has solved the heat dissipation problem of led light source to a certain extent; But there is complex structure; Limitation such as volume is big, and radiating efficiency is lower are particularly for high-powered LED lamp; In order to guarantee that the contact area that radiating effect must increase aluminium base and radiator greatly makes that the LED lamp body process is long-pending huge, thereby restricted its application on high-power LED light source.

Summary of the invention

For overcoming the limitation of prior art, the purpose of the utility model provides a kind of led light source heat abstractor, its have simple in structure, volume is little, radiating efficiency is high, long service life and be suitable for advantages such as high-power LED light source.

For realizing above-mentioned purpose; The utility model adopts following technical scheme: a kind of led light source heat abstractor; Include LED electronic building brick and base of ceramic; It is characterized in that: said base of ceramic is provided with and adopts conductive silver paste to print order wire circuit and the pad that forms, and said LED electronic building brick is electrically connected with said order wire circuit through pad.

Preferably, said LED electronic building brick is an adopting surface mounted LED.

Adopt technique scheme beneficial effect compared with prior art to be: through conductive silver paste is directly made lead and pad on base of ceramic, directly to utilize base of ceramic, shortened thermally conductive pathways, improved radiating efficiency as radiator; Saved aluminium base as heat-conducting medium, solved the bad problem of heat conduction between aluminium base and the radiator, simplified the structure of led light source, improved the radiating effect of led light source greatly, thereby prolonged the service life of led light source greatly.

Following table is to adopt the temperature test correction data (seeing table 1) of traditional heat-dissipating device and present patent application heat abstractor

Table 1:

The temperature time for reading (minute)	Traditional heat-dissipating device to test temperature (° C)	The application's heat abstractor probe temperature (° C)
			0	18	18
5	32	28
			10	42	37
15	48	43
			20	54	46
25	58	46
			30	58	46

Last table test data is the correction data that the LED leg temperature of the LED bulb lamp that adopts traditional heat-dissipating device and the application's heat abstractor is respectively tested simultaneously; Wherein two LED bulb lamps all are to adopt the ceramic heat-dissipating body; The power that is in series by the adopting surface mounted LED of 14 0.5W is the 7W bulb, and is to test under the environment of 18 ° of C in room temperature.

Last table data show that compare with the traditional heat-dissipating device, the intensification of the application's heat abstractor is slow, and the temperature that heating and heat radiation reach after the balance is low, also are that the application's radiating efficiency is high, solve the heat dissipation problem of great power LED effectively.In addition, this heat abstractor makes led light source be operated in lower temperature environment, thereby makes the life-span of led light source obviously prolong.

Description of drawings

Fig. 1 is the structural representation of traditional LED heat abstractor.

Fig. 2 is the structural representation of the utility model.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.

LED bulb lamp heat abstractor as shown in Figure 2; Include LED electronic building brick 4 and base of ceramic 1; Wherein LED electronic building brick 4 is an adopting surface mounted LED, and totally 8 of diagram LED are evenly distributed on base of ceramic 1 upper surface; Base of ceramic 1 is provided with and adopts conductive silver paste to print order wire circuit 2 and the pad 3 that forms, and LED electronic building brick 4 is electrically connected with order wire circuit 2 through pad 3.

Wherein, the process of order wire circuit 2 and pad 3 is: earlier with the serigraphy of the conductive silver paste that modulates through being furnished with circuit layout card at base of ceramic 1 upper surface, through just forming order wire circuit 2 and the pad 3 that solidifies on the base of ceramic 1 after firing.

The utility model is simple in structure, and radiating efficiency is high, and volume is little, and the LED lamp long service life that adopts the utility model structure to process can be widely used in the LED lighting field, especially high-power LED illumination.

Certainly, the above-mentioned preferred implementation that just discloses the utility model, the variation and the modification that are equal in any employing the utility model claim scope are all in the utility model claim scope.

Claims

1. led light source heat abstractor; Include LED electronic building brick (4) and base of ceramic (1); It is characterized in that: said base of ceramic (1) is provided with and adopts conductive silver paste to print order wire circuit (2) and the pad (3) that forms, and said LED electronic building brick (4) is electrically connected with said order wire circuit (2) through pad (3).

2. led light source heat abstractor as claimed in claim 1 is characterized in that: said LED electronic building brick (4) is an adopting surface mounted LED.