CN205336728U - Electrographite piece - Google Patents

Abstract

The utility model discloses an electrographite piece, including the graphite flake base member, the upside of graphite flake base member is equipped with the copper foil, the upside of copper foil is equipped with the black insulating film, graphite flake base member, copper foil and black insulating film formation base plate, the outside of base plate is equipped with the film, the big small -size of film is greater than the big small -size of base plate, and the film cladding is the vacuum state in six faces of base plate between film and the base plate, the outside four corners parcel of film has the metal frame. The utility model discloses simple structure, convenient to use, the radiating effect is good, can not cause the influence to the periphery, brings very big convenience for the enterprise.

Description

A kind of electrographite sheet

Technical field

This utility model relates to heat conduction and heat radiation materials application field, specifically a kind of electrographite sheet。

Background technology

In recent years, development along with electronic technology, the continuous renewal of electronic product is regenerated, the size of its work package is more and more less, speed and the efficiency of work are more and more higher, its caloric value is also increasing, therefore often adopts graphite heat radiation fin as the preferred material solving electronic product heat conduction and heat radiation。Graphite heat radiation fin not only has good heat conduction and heat radiation performance, and its heat radiation ratio is more uniform, so the object of graphite heat radiation fin periphery will certainly be produced certain impact, it is easier to affect the use function of periphery object, even can shorten the service life of periphery object, bring very big inconvenience to enterprise。And being generally pasted with thin film in the one side of graphite heat radiation fin, thin film, in order to protect graphite heat radiation fin, is pasted and is often realized with glue；But, gap in various degree is had between the thin film and the graphite heat radiation fin that stick with glue, gap is filled with air, thermal resistance due to gap air, reduce the graphite heat radiation fin heat conduction and heat radiation performance at the thin film place passing through stickup, make it not reach the effect of the heat conduction and heat radiation of the best, therefore bring very big inconvenience to enterprise。

Utility model content

The purpose of this utility model is in that to provide a kind of simple in construction, electrographite sheet easy to use, with the problem solving to propose in above-mentioned background technology。

For achieving the above object, this utility model provides following technical scheme:

A kind of electrographite sheet, including graphite flake matrix, the upside of described graphite flake matrix is provided with Copper Foil, the upside of described Copper Foil is provided with black insulating film, and graphite flake matrix, Copper Foil and black insulating film form substrate, and the outside of described substrate is provided with thin film, the size dimension of described thin film is more than the size dimension of substrate, film coated is in six faces of substrate, and in vacuum state between thin film and substrate, the outside tetra-pack of described thin film is wrapped with metal edge frame。

As further program of the utility model: described graphite flake matrix is artificial graphite flake。

As this utility model further scheme: described black insulating film adopts black PET dielectric film。

Compared with prior art, the beneficial effects of the utility model are: by by film coated in six faces of substrate, and make between thin film and substrate in vacuum state, increase associativity therebetween, eliminate the thermal resistance of gap hollow, and then improve the substrate performance at the heat conduction and heat radiation by thin film place, reach the effect of the heat conduction and heat radiation of the best, bring great convenience to enterprise, it is provided with metal edge frame, owing to the heat conduction and heat radiation of graphite flake is higher than metal material, can make what heat more concentrated to be shed by exposed graphite substrate, reduce shedding of metal edge frame place, thus not affecting on the basis of its heat conduction and heat radiation performance, ensure that the use function of its periphery object, graphite flake is utilized to be capable of the quick heat radiating of horizontal direction, Copper Foil is utilized to be capable of the quick heat radiating of vertical direction, utilize black insulating film can absorb heat again simultaneously, heat on Copper Foil quickly can be siphoned away and be dispersed in air, accelerate heat-transfer rate, this utility model passes through graphite flake, the combination of Copper Foil and black insulating film has well along both horizontally and vertically uniform high heat conduction and heat radiation performance, it is greatly improved radiating effect。Utilizing Copper Foil to have high conduction of heat and capability of electromagnetic shielding, the mode that heating element carries out heat conducting and radiating and electromagnetic shielding reduces the injury of human body to external world。

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model。

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments。Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection。

Refer to Fig. 1, in this utility model embodiment, a kind of electrographite sheet, including graphite flake matrix 1, described graphite flake matrix 1 is artificial graphite flake, the upside of graphite flake matrix 1 is provided with Copper Foil 2, the upside of described Copper Foil 2 is provided with black insulating film 3, described black insulating film 3 adopts black PET dielectric film, graphite flake is utilized to be capable of the quick heat radiating of horizontal direction, Copper Foil 2 is utilized to be capable of the quick heat radiating of vertical direction, utilize black insulating film 3 can absorb heat again simultaneously, heat on Copper Foil 2 quickly can be siphoned away and be dispersed in air, accelerate heat-transfer rate, this utility model passes through graphite flake, the combination of Copper Foil 2 and black insulating film 3 has well along both horizontally and vertically uniform high heat conduction and heat radiation performance, it is greatly improved radiating effect。Utilizing Copper Foil 2 to have high conduction of heat and capability of electromagnetic shielding, the mode that heating element carries out heat conducting and radiating and electromagnetic shielding reduces the injury of human body to external world。Graphite flake matrix 1, Copper Foil 2 and black insulating film 3 form substrate, the outside of described substrate is provided with thin film 4, the size dimension of described thin film 4 is more than the size dimension of substrate, thin film 4 is coated on six faces of substrate, in vacuum state between thin film 4 and substrate, by thin film 4 being coated on six faces of substrate, and make between thin film 4 and substrate in vacuum state, increase associativity therebetween, eliminate the thermal resistance of gap hollow, and then improve the substrate performance at the heat conduction and heat radiation by thin film 4 place, reach the effect of the heat conduction and heat radiation of the best, bring great convenience to enterprise, the outside tetra-pack of described thin film 4 is wrapped with metal edge frame 5。Owing to the heat conduction and heat radiation of graphite flake is higher than metal material, can make what heat more concentrated to be shed by exposed graphite substrate, reduce shedding of metal edge frame 5 place, thus not affecting on the basis of its heat conduction and heat radiation performance, it is ensured that the use function of its periphery object。

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms。Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model。Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved。

In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that。

Claims (3)

1. an electrographite sheet, including graphite flake matrix (1), it is characterized in that, the upside of described graphite flake matrix (1) is provided with Copper Foil (2), the upside of described Copper Foil (2) is provided with black insulating film (3), graphite flake matrix (1), Copper Foil (2) and black insulating film (3) form substrate, the outside of described substrate is provided with thin film (4), the size dimension of described thin film (4) is more than the size dimension of substrate, thin film (4) is coated on six faces of substrate, in vacuum state between thin film (4) and substrate, the outside tetra-pack of described thin film (4) is wrapped with metal edge frame (5)。

2. a kind of electrographite sheet according to claim 1, it is characterised in that described graphite flake matrix (1) is artificial graphite flake。

3. a kind of electrographite sheet according to claim 1, it is characterised in that described black insulating film (3) adopts black PET dielectric film。