CN204305539U - Fin and mobile terminal - Google Patents

Abstract

The utility model relates to a heat sink and a mobile terminal, and relates to the field of electronic equipment. The main technical solution includes: a heat sink for bonding on the heat dissipation surface of the heat dissipation element, which includes: an insulating layer and a heat dissipation layer. The heat dissipation layer includes a first surface and a second surface opposite to each other, the first surface faces the heat dissipation surface, and the insulating layer is disposed on the second surface. The insulating layer includes a third surface and a fourth surface opposite, the third surface is close to the second surface, the fourth surface is away from the second surface, and the area of the fourth surface is larger than that of the third surface. On the insulating layer of the prior art, if the first surface area of the insulating layer is increased, the contact area between the first surface and the outside air will increase, which can speed up the heat conduction efficiency of the first surface to the outside air, thereby enhancing the performance of the heat sink. thermal performance. Arranging the heat sink on the heat dissipation surface of the heating element inside the mobile terminal can improve the heat dissipation performance of the mobile terminal.

Description

Heat sink and mobile terminal

technical field

The utility model relates to the field of electronic equipment, in particular to a heat sink and terminal equipment.

Background technique

As the mobile phone has more and more functions and the operating power of the mobile phone is increasing, a large amount of heat energy will be generated during the operation of the mobile phone, and the cooling capacity of the heat sink equipped inside it is also getting higher and higher.

As shown in FIG. 1 , the heat sink itself is generally composed of a heat dissipation layer A2 for heat dissipation, an adhesive surface layer A3 located below the heat dissipation layer, and an insulating plane layer A1 located above the heat dissipation layer. Wherein, the insulating plane layer mainly plays the role of insulating, and its outer surface is a flat plane.

During the process of realizing the utility model, the inventors found at least the following problems in the prior art: wherein, the heat dissipation performance of the insulating planar layer itself is not high enough to hinder the heat dissipation efficiency of the heat dissipation layer itself.

Utility model content

The main purpose of the utility model is to provide a heat sink and a mobile terminal, and the technical problem to be solved is to improve its heat dissipation performance.

On the one hand, the purpose of the utility model and the solution to its technical problems are achieved by adopting the following technical solutions. A heat sink proposed according to the utility model is used to be attached to the heat dissipation surface of the heat dissipation element, which includes:

Insulation layer and heat dissipation layer.

The heat dissipation layer includes a first surface and a second surface opposite to each other, the first surface faces the heat dissipation surface, and the insulating layer is disposed on the second surface.

The insulating layer includes an opposite third surface and a fourth surface, the third surface is close to the second surface, the fourth surface is far away from the second surface, and the area of the fourth surface is larger than that of the first surface. The area of the three surfaces.

The purpose of the utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

Optionally, the aforementioned heat sink, wherein the fourth surface of the insulating layer is provided with a convex structure and/or a concave structure.

Optionally, the aforementioned heat sink, wherein the fourth surface of the insulating layer is corrugated.

Optionally, the aforementioned heat sink, wherein the fourth surface of the insulating layer is arc-shaped waves, rectangular waves or triangular waves.

Optionally, the aforementioned heat sink also includes:

A back adhesive layer for laminating with the heat dissipation surface.

The heat dissipation layer is located between the insulating layer and the adhesive layer.

Optionally, the aforementioned heat sink, wherein the heat dissipation layer is a graphite layer.

Optionally, the aforementioned heat sink, wherein the insulating layer is a polyethylene terephthalate layer.

On the other hand, the purpose of the utility model and the solution to its technical problems are achieved by adopting the following technical solutions. A mobile terminal proposed according to the utility model includes:

The casing, and the heating element arranged in the casing. in,

Heat dissipation fins are provided on the heat dissipation surface of the heating element.

The heat sink includes an insulating layer and a heat dissipation layer.

The heat dissipation layer includes a first surface and a second surface opposite to each other, the first surface faces the heat dissipation surface, and the insulating layer is disposed on the second surface.

The insulating layer includes an opposite third surface and a fourth surface, the third surface is close to the second surface, the fourth surface is far away from the second surface, and the area of the fourth surface is larger than that of the first surface. The area of the three surfaces.

The purpose of the utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

Optionally, the aforementioned mobile terminal, wherein the heat sink further includes an adhesive layer.

The heat dissipation layer is located between the insulating layer and the adhesive layer.

The adhesive layer is pasted on the heat dissipation surface.

With the above technical solution, the heat sink and the mobile terminal of the present invention have at least the following advantages:

1. The first surface of the heat dissipation layer of the heat dissipation sheet provided by the present invention faces the heat dissipation surface of the heat dissipation element, and the insulating layer is arranged on the second surface of the heat dissipation layer opposite to the first surface The area of the fourth surface of the insulating layer away from the second surface of the heat dissipation layer is greater than the area of the third surface of the insulating layer close to the second surface of the heat dissipation layer. On the insulating layer of the prior art, if the fourth surface area of the insulating layer is increased, the contact area between the fourth surface and the outside air will increase, which can accelerate the heat conduction efficiency of the fourth surface to the outside air, Therefore, the heat dissipation performance of the heat sink can be enhanced. Arranging the heat sink on the heat dissipation surface of the heating element inside the mobile terminal can improve the heat dissipation performance of the mobile terminal.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with accompanying drawings. back.

Description of drawings

Fig. 1 is a structural schematic diagram of a heat sink in the prior art;

Fig. 2 is a structural schematic diagram of the heat sink provided by Embodiment 1 of the utility model;

Fig. 3 is a structural schematic diagram of the heat sink on the outer surface of the rectangular wave provided by Embodiment 1 of the utility model;

Fig. 4 is a schematic diagram of the structure of the heat sink on the outer surface of the triangular wave provided by Embodiment 1 of the utility model;

FIG. 5 is a schematic cross-sectional view of a partial structure of a mobile terminal provided by Embodiment 2 of the present utility model.

Detailed ways

The utility model provides a heat sink and a mobile terminal to improve the heat dissipation performance of the heat sink and the mobile terminal in order to solve the technical problem that the insulating plane layer of the heat sink hinders the heat dissipation efficiency of the mobile phone itself in the prior art.

The technical solution of the utility model embodiment is to solve the above-mentioned technical problems, and general train of thought is as follows:

The utility model provides a heat sink, which is used to fit on the heat dissipation surface of the heat dissipation element, which includes:

Insulation layer and heat dissipation layer;

The heat dissipation layer includes an opposite first surface and a second surface, the first surface faces the heat dissipation surface, and the insulating layer is disposed on the second surface;

The insulating layer includes an opposite third surface and a fourth surface, the third surface is close to the second surface, the fourth surface is far away from the second surface, and the area of the fourth surface is larger than that of the first surface. The area of the three surfaces.

A mobile terminal provided by the utility model includes:

The housing, and the heating element arranged in the housing; wherein,

A heat sink is provided on the heat dissipation surface of the heating element;

The heat sink includes an insulating layer and a heat dissipation layer;

The heat dissipation layer includes an opposite first surface and a second surface, the first surface faces the heat dissipation surface, and the insulating layer is disposed on the second surface;

The insulating layer includes an opposite third surface and a fourth surface, the third surface is close to the second surface, the fourth surface is far away from the second surface, and the area of the fourth surface is larger than that of the first surface. The area of the three surfaces.

The first surface of the heat dissipation layer of the heat dissipation sheet provided by the utility model faces the heat dissipation surface of the heat dissipation element, and the insulating layer is arranged on the second surface of the heat dissipation layer opposite to the first surface, so The area of the fourth surface of the insulating layer away from the second surface of the heat dissipation layer is larger than the area of the third surface of the insulating layer close to the second surface of the heat dissipation layer. On the insulating layer of the prior art, if the fourth surface area of the insulating layer is increased, the contact area between the fourth surface and the outside air will increase, which can accelerate the heat conduction efficiency of the fourth surface to the outside air, Therefore, the heat dissipation performance of the heat sink can be enhanced. Arranging the heat sink on the heat dissipation surface of the heating element inside the mobile terminal can improve the heat dissipation performance of the mobile terminal.

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the specific implementation, structure, Features and their functions are described in detail below. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B. The specific understanding is: A and B can be included at the same time, and A and B can be included separately. A exists, B may exist alone, and any of the above three conditions can be met.

As shown in FIG. 2 , a heat sink 1 proposed by Embodiment 1 of the present utility model is used to be pasted on the heat dissipation surface of a heat dissipation element. The heat sink 1 includes: an insulating layer 11 and a heat dissipation layer 12 . The heat dissipation layer 12 includes a first surface and a second surface opposite to each other, the first surface faces the heat dissipation surface, and the insulating layer 11 is disposed on the second surface. The insulating layer 11 includes an opposite third surface 112 and a fourth surface 111, the third surface 112 is close to the second surface, the fourth surface 111 is far away from the second surface, and the fourth surface 111 The area of is larger than the area of the third surface 112 .

The first surface of the heat dissipation layer of the heat dissipation sheet provided by Embodiment 1 of the present invention faces the heat dissipation surface of the heat dissipation element, and the insulating layer is arranged on the second surface of the heat dissipation layer opposite to the first surface Above, the area of the fourth surface of the insulating layer away from the second surface of the heat dissipation layer is greater than the area of the third surface of the insulating layer close to the second surface of the heat dissipation layer. On the insulating layer of the prior art, if the fourth surface area of the insulating layer is increased, the contact area between the fourth surface and the outside air will increase, which can accelerate the heat conduction efficiency of the fourth surface to the outside air, Therefore, the heat dissipation performance of the heat sink can be enhanced.

In the prior art, the area of the third surface 112 of the insulating layer is equal to the area of the fourth surface 111 .

In specific implementation, it can be implemented in the following manner: the heat sink described in Embodiment 1 of the present utility model also provides the following implementation manner, wherein the fourth surface of the insulating layer is provided with a raised structure and/or sunken structure. The protruding structure and/or the concave structure may be regularly set in multiples, arranged continuously or discontinuously. In the prior art, the insulating layer is directly pasted on the heat dissipation layer. Due to technical requirements, the sticking strength between the insulating layer and the heat dissipation layer is limited. When an external force is applied, the insulating layer is easily separated from the heat dissipation layer. The fourth surface of the insulating layer is provided with a convex structure and/or a concave structure, which can improve the elasticity of the insulating layer and reduce the contact area between the insulating layer and the heat dissipation layer. After the insulating layer is subjected to external force, the insulating layer will deform, which can reduce the damage rate of the insulating layer after receiving external force, thereby improving the service life of the heat sink.

Furthermore, the heat sink described in Embodiment 1 of the present utility model also provides the following implementation manner, as shown in FIG. 2 , wherein the fourth surface 111 of the insulating layer 11 is wavy. The use of the wave-shaped fourth surface can increase the expansion area, and at the same time, compared with the use of a raised structure or a depressed structure, its thickness can be thinner, so that the heat dissipation performance of the insulating layer is better.

In the specific production process, as shown in Figures 2, 3, and 4, the wave shape of the fourth surface 111 mentioned above can be realized in various ways, such as: as shown in Figure 2, arc-shaped waves, as shown in Figure 3 , rectangular waves or as shown in Figure 4, triangular waves, etc. Among them, the use of arc-shaped waves is better processed and saves production costs. At the same time, the strength of the arc-shaped wave structure is also high, which can enhance the service life of the heat sink.

Further, in order to facilitate the arrangement of the heat sink on the heat dissipation surface of the heat dissipation element, as shown in Figure 2, the heat sink described in Embodiment 1 of the present utility model also provides the following implementation mode, which also includes: On the back adhesive layer 13 attached to the heat dissipation surface 12 . The heat dissipation layer 12 is located between the insulating layer 11 and the adhesive layer 13 . The user does not need tools when talking about the installation of the heat sink and the heat dissipation surface of the heat dissipation element, and only needs to stick the adhesive layer on the heat dissipation sheet to the heat dissipation surface of the heat dissipation element. The assembly tools are relatively simple. Can save production cost.

Furthermore, in order to improve the heat dissipation efficiency of the heat sink, the heat sink described in Embodiment 1 of the present utility model also provides the following implementation, wherein the heat dissipation layer is a graphite layer. Graphite has better thermal conductivity than steel, iron, lead and other thermally conductive metal materials. At the same time, graphite also has other advantages: graphite is light in weight, 25% lighter than aluminum and 75% lighter than copper. The weight of the heat sink can be reduced, and the weight of the mobile terminal can be reduced when assembled on the mobile terminal device. The graphite layer can also be smoothly attached to any flat or curved surface, and can be cut in any form according to the needs of customers, which is convenient for production and processing.

Further, in order to improve the service life of the heat sink, the heat sink described in the first embodiment of the present utility model also provides the following implementation, wherein the insulating layer is a polyethylene terephthalate layer. Polyethylene terephthalate is the most important variety of thermoplastic polyester. Polyethylene terephthalate (Polyethylene terephthalate) is referred to as PET or PEIT, commonly known as polyester resin. It is a condensation polymer of terephthalic acid and ethylene glycol, collectively known as thermoplastic polyester, or saturated polyester. It has good mechanical properties, and its impact strength is 3 to 5 times that of other films. It can adapt to more complex environments, is not easy to damage, and can increase the service life of heat sinks. At the same time, the price of polyethylene terephthalate is relatively low, and it is a relatively cost-saving material.

As shown in FIG. 5 , a mobile terminal device provided by Embodiment 2 of the present invention includes: a housing 10 and a heating element 20 disposed in the housing 10 . Wherein, the heat dissipation fin 1 is provided on the heat dissipation surface 21 of the heating element 20 . The heat sink 1 includes an insulating layer 11 and a heat dissipation layer 12 . The heat dissipation layer 12 includes a first surface and a second surface opposite to each other, the first surface faces the heat dissipation surface 21 , and the insulating layer 11 is disposed on the second surface. The insulating layer 11 includes an opposite third surface 112 and a fourth surface 111, the third surface 112 is close to the second surface, the fourth surface 111 is far away from the second surface, and the fourth surface 111 The area of is larger than the area of the third surface 112 .

The first surface of the heat dissipation layer of the heat dissipation sheet of the mobile terminal provided in the second embodiment of the present invention faces the heat dissipation surface of the heat dissipation element, and the insulating layer is arranged on the second surface of the heat dissipation layer opposite to the first surface. On the two surfaces, the area of the fourth surface of the insulating layer away from the second surface of the heat dissipation layer is larger than the area of the third surface of the insulating layer close to the second surface of the heat dissipation layer. On the insulating layer of the prior art, if the fourth surface area of the insulating layer is increased, the contact area between the fourth surface and the outside air will increase, which can accelerate the heat conduction efficiency of the fourth surface to the outside air, Therefore, the heat dissipation performance of the heat sink can be enhanced. Arranging the heat sink on the heat dissipation surface of the heating element inside the mobile terminal can improve the heat dissipation performance of the mobile terminal.

Further, in order to facilitate assembly. The mobile terminal described in Embodiment 2 of the present utility model also provides the following implementation manner, as shown in FIG. 5 , wherein the heat sink 1 further includes an adhesive layer 13 . The heat dissipation layer 12 is located between the insulating layer 11 and the adhesive layer 13 . The adhesive layer 13 is pasted on the heat dissipation surface 21 . It only needs to paste the adhesive layer of the heat sink on the heat dissipation surface, no tools are needed, and the assembly is relatively simple.

Specifically, the mobile terminal described in the second embodiment of the present invention also provides the following implementation manner, wherein: the mobile terminal is a tablet computer, an all-in-one computer, a notebook computer, a desktop computer, or a mobile phone.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model are all valid. Still belong to the scope of the technical solution of the utility model.

Claims (9)

1. A heat sink for attachment to a heat-dissipating surface of a heat-dissipating component, comprising:

an insulating layer and a heat dissipation layer;

the heat dissipation layer comprises a first surface and a second surface which are opposite, the first surface faces the heat dissipation surface, and the insulating layer is arranged on the second surface;

the insulating layer comprises a third surface and a fourth surface which are opposite, the third surface is close to the second surface, the fourth surface is far away from the second surface, and the area of the fourth surface is larger than that of the third surface.

2. The heat sink as recited in claim 1,

and a convex structure and/or a concave structure are/is arranged on the fourth surface of the insulating layer.

3. The heat sink as recited in claim 2,

the fourth surface of the insulating layer is wavy.

4. The heat sink as recited in claim 3,

the fourth surface of the insulating layer is arc-shaped wave, rectangular wave or triangular wave.

5. The heat sink as claimed in any one of claims 1 to 4, further comprising:

the back glue layer is used for being attached to the heat dissipation surface;

the heat dissipation layer is located between the insulating layer and the back glue layer.

6. The heat sink as recited in claim 1,

the heat dissipation layer is a graphite layer.

7. The heat sink as recited in claim 1,

the insulating layer is a polyethylene terephthalate layer.

8. A mobile terminal, comprising:

the heating device comprises a shell and a heating element arranged in the shell; wherein,

the radiating surface of the heating element is provided with radiating fins;

the heat sink comprises an insulating layer and a heat dissipation layer;

the heat dissipation layer comprises a first surface and a second surface which are opposite, the first surface faces the heat dissipation surface, and the insulating layer is arranged on the second surface;

the insulating layer comprises a third surface and a fourth surface which are opposite, the third surface is close to the second surface, the fourth surface is far away from the second surface, and the area of the fourth surface is larger than that of the third surface.

9. The mobile terminal of claim 8,

the heat radiating fin further comprises a back glue layer;

the heat dissipation layer is positioned between the insulating layer and the back glue layer;

the back glue layer is attached to the heat dissipation surface.