CN202494081U

CN202494081U - LED (Light Emitting Diode) high-efficiency radiating structure

Info

Publication number: CN202494081U
Application number: CN2012200533534U
Authority: CN
Inventors: 黄柱联
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-18
Filing date: 2012-02-18
Publication date: 2012-10-17
Anticipated expiration: 2022-02-18

Abstract

The utility model discloses an LED (Light Emitting Diode) high-efficiency radiating structure, which comprises a graphite radiator, wherein a metal heat conductor is embedded in the central part of the graphite radiator and comprises a hollow first heat conducting component; the periphery of the first heat conducting component is connected with a second heat conducting component; the bottom of the first heat conducting component is provided with a joint part which is connected with an LED component heat source part; and the outer surface of the second heat conducting component is in close contact with the covered graphite radiator. The LED high-efficiency radiating structure has the advantages of attractive appearance, simple structure and capabilities of achieving uniform and quick LED radiating and cooling effects through combination of the hollow metal heat conductor and the graphite heat conductor of different heat conductivities, enhancing the overall power and prolonging the life of the LED.

Description

The LED high-efficiency heat radiation structure

Technical field

The utility model relates to a kind of radiator structure, particularly a kind of LED high-efficiency heat radiation structure.

Background technology

Well-known, semiconductor light emitting diode (LED) has the input electric energy of 17-25% to be converted into luminous energy during operation, and the electric energy of all the other 75-83% transforms heat energy, and the quality of its heat radiation directly influences the service life of LED.Traditional radiator is the fin-shaped post injection mo(u)lding of adopting metal and graphite plastic, lets metal contact as the heat transfer sheet of heat conducting element with the LED lamp, through the fin-shaped post heat is dispersed in the air again.The metal heat-conducting element that generally uses has two kinds, and a kind of is fine copper, and another kind is an aluminium alloy.As adopt fine copper as heat conducting element, and its price is more expensive, and heat capacity ratio is less, is unfavorable for that heat distributes; If adopt aluminium as heat conducting element, though cheap, thermal conductivity is lower, and thermal conductivity is not enough, influences radiating effect.And, as a rule no matter be to use copper or aluminium as heat conducting element, basically all be to make solid shape, heat is easy to can not distribute fast in the metal accumulated.

The utility model content

In order to solve the problems of the technologies described above, the purpose of the utility model is to provide a kind of LED high-efficiency heat radiation structure, and this structure heat radiation fast, efficiently.

The technical scheme that the utility model adopted is:

A kind of LED high-efficiency heat radiation structure comprises the graphite radiating body, and the centre interlocking of graphite radiating body has the metal heat-conducting body, and said metal heat-conducting body comprises first conducting-heat elements of hollow, and the first conducting-heat elements periphery is connected with second conducting-heat elements; Said first conducting-heat elements bottom has contact portion to be connected with LED assembly thermal source portion, and the outer surface of second conducting-heat elements closely contacts with the graphite radiating body that is coated.

Said first conducting-heat elements is the cap shape; Second conducting-heat elements puts the cylinder of the inner chamber of this cap shape first conducting-heat elements for band; The rear end of this cylinder can be solid, also can be hollow, directly or through the sticking material of heat conduction closely contacts between first conducting-heat elements and second conducting-heat elements.

The material of said second conducting-heat elements is aluminium or aluminium alloy, and the material of first conducting-heat elements is a copper.

Closely be welded to connect through scolding tin between the contact portion of said first conducting-heat elements and the LED assembly thermal source portion.

In the contact portion of said first conducting-heat elements welding hole clipping is arranged.

The outer peripheral face of said second conducting-heat elements has draw-in groove, and the graphite radiating body closely is connected with second conducting-heat elements.

Said graphite radiating body is the graphite plastic radiator.

The beneficial effect of the utility model is: the utility model good looking appearance; Simple in structure; The combination of hollow metal heat carrier and graphite radiating body through different thermal conductivities has reached evenly, the effect of quick heat radiating and cooling LED, has strengthened overall power and the life-span that has prolonged LED.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the generalized section of the utility model first embodiment;

Fig. 3 is the vertical view of the utility model first embodiment;

Fig. 4 is the generalized section of the utility model second embodiment;

Fig. 5 is the vertical view of the utility model second embodiment;

Fig. 6 is the generalized section of the utility model the 3rd embodiment;

Fig. 7 is the vertical view of the utility model the 3rd embodiment;

Fig. 8 is the structural representation of the utility model the 4th embodiment.

The specific embodiment

Shown in Fig. 1-8, a kind of LED high-efficiency heat radiation structure comprises graphite radiating body 1; Said graphite radiating body 1 can be the graphite plastic radiator, and the outside fin column of being made up of a plurality of fins that forms has increased the contact area with air; Radiating effect is better; The centre interlocking of graphite radiating body 1 has metal heat-conducting body, said metal heat-conducting body to comprise that first conducting-heat elements, 2, the first conducting-heat elements, 2 peripheries of hollow are connected with second conducting-heat elements 3; Said first conducting-heat elements 2 bottoms have contact portion 4 to be connected with LED assembly thermal source portion, and the outer surface of second conducting-heat elements 3 closely contacts with the graphite radiating body 1 that is coated.

Said first conducting-heat elements 2 is the cap shape of hollow, and second conducting-heat elements 3 is the cylinder with the inner chamber of ccontaining this cap shape first conducting-heat elements, between first conducting-heat elements 2 and second conducting-heat elements 3 directly or glue material through heat conduction and closely contact.

The material of said second conducting-heat elements 3 is aluminium or aluminium alloy, and the material of first conducting-heat elements 2 is a copper.First conducting-heat elements 2 is used for absorbing the heat that the use of LED assembly is distributed, and cooperates second conducting-heat elements between different Heat Conduction Materials, to form potential difference, the heat conducting effect better, faster.

Closely be welded to connect through scolding tin between the contact portion 4 of said first conducting-heat elements 2 and the LED assembly thermal source portion.

Welding hole clipping 10 is arranged in the contact portion 4 of said first conducting-heat elements 2.

The outer peripheral face of said second conducting-heat elements 3 has draw-in groove 5, because the graphite radiating body is annotated injection mo(u)lding in the periphery of second conducting-heat elements 3, graphite radiating body 1 closely is connected with second conducting-heat elements 3, can in use not come off.

Said graphite radiating body 1 outside is the fin column.

Adopt the mode that is welded to connect to fix between the heat radiating metal of this radiator structure and the LED assembly bottom that needs heat radiation to cooperate and transmit heat.

Fig. 2 and Fig. 3 are first embodiment of the utility model; Its second conducting-heat elements 3 is the aluminium post; First conducting-heat elements 2 is a cap shape heat conduction copper post; Heat conduction aluminium post top opening, in being sealed in by graphite radiating body 1, the heat of heat conduction aluminium post and heat conduction copper post hollow space can be through being delivered in the graphite radiating body 1 with contacting of sealing surface.

Fig. 4 and Fig. 5 are second embodiment of the utility model; Its second conducting-heat elements 3 is the aluminium post; First conducting-heat elements 2 is a cap shape heat conduction copper post, heat conduction aluminium post top opening, and opening part is concordant with the top of graphite radiating body 1; Make the hollow space of heat conduction copper post, heat conduction aluminium post all communicate like this with the external world, more difficult at metal heat-conducting body accumulated heat.

Fig. 6 and Fig. 7 are the 3rd embodiment of the utility model; Its second conducting-heat elements 3 is the aluminium post; First conducting-heat elements 2 is a cap shape heat conduction copper post, and heat conduction copper post and heat conduction aluminium post hollow space are filled full graphite radiating material, fuse and injection mo(u)lding with graphite radiating body 1; This mode has increased the contact area of metal heat-conducting body and graphite radiating body 1, and heat-sinking capability is strengthened.

Fig. 8 is the 4th embodiment of the utility model, and its second conducting-heat elements 3 is the aluminium post, and first conducting-heat elements 2 is a cap shape heat conduction copper post, and the rear end of heat conduction aluminium post is solid, and it makes simple, and is convenient for production.In addition, in this embodiment, welding hole clipping 10 is arranged in the contact portion of first conducting-heat elements, be convenient to securely with being welded to connect between heat conduction copper post and the heat conduction aluminium post.

In LED when work,, the heat of generation comes out from the LED component passes, and successively through the heat conduction copper post of first conducting-heat elements 2, second conducting-heat elements 3 heat conduction aluminium post and graphite radiating body 1, finally be dissipated in the air.

The above is merely the preferential embodiment of the utility model, as long as realize that with basic identical means the technical scheme of the utility model purpose all belongs within the protection domain of the utility model.

Claims

1. LED high-efficiency heat radiation structure; Comprise graphite radiating body (1); The centre interlocking of graphite radiating body (1) has the metal heat-conducting body; It is characterized in that: said metal heat-conducting body comprises first conducting-heat elements (2) of hollow, and first conducting-heat elements (2) periphery is connected with second conducting-heat elements (3); Said first conducting-heat elements (2) bottom has contact portion (4) to be connected with LED assembly thermal source portion, and the outer surface of second conducting-heat elements (3) closely contacts with the graphite radiating body (1) that is coated.

2. LED high-efficiency heat radiation structure according to claim 1; It is characterized in that: said first conducting-heat elements (2) is the cap shape; Second conducting-heat elements (3) is the cylinder with the inner chamber of ccontaining this cap shape first conducting-heat elements, between first conducting-heat elements (2) and second conducting-heat elements (3) directly or glue material through heat conduction and closely contact.

3. according to claim 1 or 2 described LED high-efficiency heat radiation structures, it is characterized in that: the material of said second conducting-heat elements (3) is aluminium or aluminium alloy, and the material of first conducting-heat elements (2) is a copper.

4. according to claim 1 or 2 described LED high-efficiency heat radiation structures, it is characterized in that: closely be welded to connect through scolding tin between the contact portion (4) of said first conducting-heat elements (2) and the LED assembly thermal source portion.

5. LED high-efficiency heat radiation structure according to claim 4 is characterized in that: in the contact portion (4) of said first conducting-heat elements (2) welding hole clipping (10) is arranged.

6. LED high-efficiency heat radiation structure according to claim 1 is characterized in that: the outer peripheral face of said second conducting-heat elements (3) has draw-in groove (5), and graphite radiating body (1) closely is connected with second conducting-heat elements (3).

7. LED high-efficiency heat radiation structure according to claim 1 is characterized in that: said graphite radiating body (1) is outside to be the fin column.

8. LED high-efficiency heat radiation structure according to claim 1 is characterized in that: said graphite radiating body (1) is the graphite plastic radiator.