Heat dissipation shielding film

Abstract

The embodiment of the utility model belongs to the technical field of electromagnetic shielding. The utility model also relates to a heat dissipation shielding film, which comprises an FPC main body, the FPC main body is provided with an FPC element area, a shielding part covering the FPC element area is attached to the FPC main body, a plurality of first ventilation parts are arranged on the shielding part, an isolation part is arranged between the shielding part and the FPC main body, and non-glue areas are arranged between the isolation part and the FPC main body and between the isolation part and the shielding part. A ventilation cavity is formed among the isolation part, the FPC body and the shielding part, and the isolation part is provided with a plurality of second ventilation parts corresponding to the positions of the non-glue areas. According to the invention, the plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups which are respectively used for air inlet and air outlet of the ventilation cavity, so that external air can exchange heat with the ventilation cavity through the first ventilation parts and the second ventilation parts to take away heat generated by the component, heat dissipation is realized, the working temperature of the component is reduced, and the service life of the component is prolonged. Therefore, the working stability and the service life of the component are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic shielding, and more specifically, to a heat dissipation shielding film. Background Art

[0002] With the rapid development of electronic technology, electronic components are increasingly used in various electronic devices. However, electronic components are easily affected by external electromagnetic interference during operation, resulting in performance degradation or even damage. In order to solve this problem, the industry widely uses shielding paper as an effective means to protect components from electromagnetic interference.

[0003] Shielding paper can significantly reduce external electromagnetic interference to electronic components due to its excellent conductive properties and shielding effect. However, in practical applications, people have found that after shielding paper is attached to components, its conductive properties and thermal insulation properties will have an adverse effect on the heat dissipation of components. If the heat generated by the components during operation cannot be discharged in time, the temperature of the components will increase, thereby affecting their working stability and life. Therefore, we have made improvements to this and proposed a heat dissipation shielding film.

[0004] For example, a Chinese patent (publication number CN216820529U) discloses an anti-interference electromagnetic shielding film, and its specification discloses: In recent years, in order to prevent the interference of electromagnetic waves received from the outside or the interference of electromagnetic waves received between internal electronic components, which may cause electronic machines to malfunction, electromagnetic shielding films are often used to cover flexible circuit boards (FPCs for short) to protect the flexible circuit boards from external EMI and reduce the interference of the flexible circuit boards themselves to the outside world; however, the flexible circuit boards will emit a lot of heat during use, and the existing anti-interference electromagnetic shielding films only have the effect of electromagnetic shielding, and cannot export the heat inside the flexible circuit boards, which seriously affects the service life of the flexible circuit boards. The above patents can prove the defects of the existing technology. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is that after the shielding paper is attached to the components, due to its conductive and thermal insulation properties, it will have an adverse effect on the heat dissipation of the components.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A heat dissipation shielding film, comprising: an FPC body, the FPC body having an FPC component area, a shielding part covering the FPC component area attached to the FPC body, a plurality of first ventilation parts arranged on the shielding part, an isolation part arranged between the shielding part and the FPC body, a non-glue area arranged between the isolation part and the FPC body and the shielding part, so that a ventilation cavity is formed between the isolation part and the FPC body and the shielding part, and a plurality of second ventilation parts corresponding to the positions of the non-glue areas are opened on the isolation part. The present application provides a heat dissipation shielding film, comprising: an FPC body having an FPC component area, a shielding part covering the FPC component area attached to the FPC body, a plurality of first ventilation parts arranged on the shielding part, a separation part arranged between the shielding part and the FPC body, a non-glue area arranged between the separation part and the FPC body and the shielding part, and a plurality of second ventilation parts corresponding to the positions of the non-glue areas are opened on the separation part. , and an isolation part is set between the FPC body and the shielding part, a ventilation cavity is formed between the isolation part, the FPC body and the shielding part, and a plurality of second ventilation parts corresponding to the positions of the glue-free areas are opened on the isolation part, and the plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups, which are respectively used for air intake and air outlet of the ventilation cavity, so that the outside air can exchange heat with the ventilation cavity through the first ventilation part and the second ventilation part to take away the heat generated by the components, realize heat dissipation, reduce the working temperature of the components, and thus improve the working stability and life of the components.

[0008] As an improved manner of the utility model, the plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups, which are used for air intake and air outlet of the ventilation cavity respectively.

[0009] As an improved manner of the present invention, the position of the second ventilation portion corresponds to the non-signal line area of ​​the FPC body, and the opening position of the second ventilation portion is staggered with the opening position of the second ventilation portion.

[0010] As an improved manner of the present invention, the shielding part is a shielding paper body, the shielding paper body is pasted on the FPC body, and the shielding paper body covers the outer shape of the FPC component area.

[0011] As an improved manner of the present invention, the second ventilation part is a second ventilation hole, and the second ventilation hole is arranged on the shielding paper body.

[0012] As an improved manner of the utility model, the isolation part is an isolation film, and an adhesive area is provided on the isolation film, and the adhesive area is bonded to the shielding paper body.

[0013] As an improved manner of the utility model, the adhesive area is arranged close to the outer shape of the isolation film, and the adhesive area is located in the middle of the non-adhesive area.

[0014] As an improved manner of the present invention, the first ventilation portion is a first ventilation hole, and the first ventilation hole is opened on the isolation membrane.

[0015] As an improvement of the utility model, the first ventilation hole and the second ventilation hole are both connected to the ventilation cavity to achieve air exchange between the ventilation cavity and the outside air.

[0016] As an improvement of the present invention, the opening position of the first ventilation hole and the opening position of the second ventilation hole are staggered, and the first ventilation hole and the second ventilation hole are connected through a ventilation cavity.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem in the prior art that after the shielding paper is attached to the components, its conductive and thermal insulation properties will have an adverse effect on the heat dissipation of the components, the present application provides a first ventilation part on the shielding part, and an isolation part between the FPC body and the shielding part, a ventilation cavity is formed between the isolation part, the FPC body and the shielding part, and a plurality of second ventilation parts corresponding to the positions of the glue-free areas are opened on the isolation part, and the plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups, which are respectively used for air intake and air outlet of the ventilation cavity, so that the outside air can exchange heat with the ventilation cavity through the first ventilation part and the second ventilation part to take away the heat generated by the components, thereby achieving heat dissipation and reducing the working temperature of the components, thereby improving the working stability and life of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the heat dissipation shielding film provided in this application;

[0020] Figure 2 A schematic diagram of the structure of the heat dissipation shielding film provided in this application;

[0021] Figure 3 A schematic diagram of the structure of the isolation film of the heat dissipation shielding film provided in this application;

[0022] Figure 4 This is an exploded view of the heat dissipation shielding film provided in this application.

[0023] Indicated in the figure:

[0024] 1. FPC body; 101. FPC component area; 2. Isolation film; 201. First ventilation hole; 3. Shielding paper body; 301. Second ventilation hole. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] As recorded in the background technology, shielding paper can significantly reduce external electromagnetic interference to electronic components due to its excellent conductive properties and shielding effect. However, in actual applications, people have found that after the shielding paper is attached to the components, due to its conductive and thermal insulation properties, it will have an adverse effect on the heat dissipation of the components. If the heat generated by the components during operation cannot be discharged in time, the temperature of the components will cause the components to rise, thereby affecting their working stability and life.

[0027] In order to solve this technical problem, the utility model provides a heat dissipation shielding film.

[0028] Specifically, please refer to Figure 1-Figure 4 , the heat dissipation shielding film specifically includes:

[0029] The FPC body 1 has an FPC component area 101, a shielding part covering the FPC component area 101 is attached to the FPC body 1, a plurality of first ventilation parts are arranged on the shielding part, an isolation part is arranged between the shielding part and the FPC body 1, and a glue-free area is arranged between the isolation part, the FPC body 1 and the shielding part, so that a ventilation cavity is formed between the isolation part, the FPC body 1 and the shielding part, and a plurality of second ventilation parts corresponding to the positions of the glue-free areas are opened on the isolation part.

[0030] The heat dissipation shielding film provided by the utility model is provided with a first ventilation part on the shielding part, and an isolation part is provided between the FPC main body 1 and the shielding part, a ventilation cavity is formed between the isolation part, the FPC main body 1 and the shielding part, and a plurality of second ventilation parts corresponding to the positions of the glue-free areas are opened on the isolation part, and the plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups, which are respectively used for air intake and air outlet of the ventilation cavity, so that the outside air can exchange heat with the ventilation cavity through the first ventilation part and the second ventilation part to take away the heat generated by the components, thereby achieving heat dissipation, reducing the working temperature of the components, and thus improving the working stability and life of the components.

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Embodiment 1 of the utility model heat dissipation shielding film

[0035] Please refer to Figure 1-Figure 4 The utility model heat dissipation shielding film comprises: an FPC body 1, the FPC body 1 has an FPC component area 101, a shielding part covering the FPC component area 101 is attached to the FPC body 1, a plurality of first ventilation parts are arranged on the shielding part, an isolation part is arranged between the shielding part and the FPC body 1, and a non-glue area is arranged between the isolation part and the FPC body 1 and the shielding part, so that a ventilation cavity is formed between the isolation part and the FPC body 1 and the shielding part, and a plurality of second ventilation parts corresponding to the position of the non-glue area are opened on the isolation part, so that the outside air can exchange heat with the ventilation cavity through the first ventilation part and the second ventilation part to take away the heat generated by the components, thereby realizing heat dissipation, reducing the working temperature of the components, and thus improving the working stability and life of the components.

[0036] Furthermore, the plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups, which are respectively used for air intake and air outlet of the ventilation cavity, thereby realizing air intake and exhaust.

[0037] Embodiment 2 of the heat dissipation shielding film of the utility model

[0038] The utility model heat dissipation shielding film is further characterized by: Figure 1 and Figure 3 As shown, the position of the second ventilation portion corresponds to the non-signal line area of ​​the FPC body 1, and the opening position of the second ventilation portion is staggered with the opening position of the second ventilation portion to prevent external interference signals from entering.

[0039] Further, such as Figure 1 , Figure 2 and Figure 4As shown, the shielding part is a shielding paper body 3, which is pasted on the FPC body 1, and the shielding paper body 3 covers the shape of the FPC component area 101; the shielding paper body 3 is shielding paper, which is a composite material with excellent conductivity and electromagnetic shielding performance. It is widely used in the field of electronic equipment to protect sensitive components from electromagnetic wave interference due to its light, flexible and easy-to-form characteristics. By optimizing the preparation process and selecting suitable conductive fillers, such as nickel powder, aluminum foil, etc., shielding paper with high-efficiency electromagnetic shielding capability can be prepared, which can effectively protect the information security of electronic equipment, improve the stability and reliability of the equipment, and extend the service life of the equipment.

[0040] Further, such as Figure 2 As shown, the second ventilation part is the second ventilation hole 301, and the second ventilation hole 301 is arranged on the shielding paper main body 3; the second ventilation hole 301 adopts a half-cut arc, wherein the arc part is a cut-off position, and the design of the half-cut arc allows air or cooling gas to flow freely between the components and the shielding paper main body 3, effectively taking away the heat generated by the components. Compared with the traditional completely closed shielding film, the half-cut arc design provides a larger heat dissipation surface area, thereby improving the heat dissipation efficiency; although the half-cut arc design allows gas flow, it still maintains sufficient shielding area to prevent electromagnetic wave interference. This design ensures good heat dissipation performance while maintaining the electromagnetic shielding effect; compared with the design of completely punching out a part of the shielding film, the half-cut arc design is more efficient in material utilization and reduces material waste; the size, position and number of the half-cut arc can be adjusted and optimized according to specific heat dissipation requirements.

[0041] Embodiment 3 of the heat dissipation shielding film of the utility model

[0042] The heat dissipation shielding film of the present invention further has an isolation portion which is an isolation film 2 , and an adhesive area is provided on the isolation film 2 , and the adhesive area is bonded to the shielding paper body 3 , and the setting of the adhesive area enables the isolation film 2 to be connected to the shielding paper body 3 and the FPC component area 101 .

[0043] Furthermore, the adhesive area is arranged close to the outer shape of the isolation film 2, and the adhesive area is located in the middle of the non-adhesive area.

[0044] The isolation film 2 is a PET film. PET film, also known as high-temperature resistant polyester film, is a plastic film with comprehensive performance and wide application. It has excellent physical properties, chemical properties and dimensional stability, as well as good transparency and recyclability.

[0045] Further, such as Figure 3 and Figure 4As shown, the first ventilation part is a first ventilation hole 201, and the first ventilation hole 201 is opened on the isolation membrane 2. The number of the positions of the first ventilation holes 201 can be set as required to increase the gas flow.

[0046] Furthermore, the first ventilation hole 201 and the second ventilation hole 301 are both connected to the ventilation cavity to achieve air exchange between the ventilation cavity and the outside air.

[0047] Furthermore, the opening position of the first ventilation hole 201 and the opening position of the second ventilation hole 301 are staggered, and the first ventilation hole 201 and the second ventilation hole 301 are connected through the ventilation cavity;

[0048] By setting the second ventilation hole 301 on the shielding paper body 3, and setting the isolation film 2 between the FPC body 1 and the shielding paper body 3, a ventilation cavity is formed between the isolation film 2 and the FPC body 1 and the shielding paper body 3, and a plurality of first ventilation holes 201 are opened on the isolation film 2, and the plurality of first ventilation holes 201 and the plurality of second ventilation holes 301 are divided into two groups, which are respectively used for air intake and air outlet of the ventilation cavity, so that the outside air can exchange heat with the ventilation cavity through the first ventilation holes 201 and the second ventilation holes 301 to take away the heat generated by the components, thereby achieving heat dissipation, reducing the working temperature of the components, and thus improving the working stability and life of the components;

[0049] Specifically, taking the air flow from left to right as an example, the air enters the ventilation cavity between the shielding paper body 3 and the isolation membrane 2 from the second ventilation hole 301 on the left, and then enters the ventilation cavity between the isolation membrane 2 and the FPC component area 101 from the first ventilation hole 201 on the left, and then enters the ventilation cavity between the shielding paper body 3 and the isolation membrane 2 from the first ventilation hole 201 on the right. Finally, the air in the two ventilation cavities is discharged from the second ventilation hole 301 on the right to achieve heat dissipation.

[0050] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A heat dissipation shielding film, characterized in that: include: An FPC body (1), the FPC body (1) having an FPC component area (101), a shielding portion covering the FPC component area (101) being attached to the FPC body (1), a plurality of first ventilation portions being arranged on the shielding portion, an isolation portion being arranged between the shielding portion and the FPC body (1), a non-glue area being arranged between the isolation portion and the FPC body (1) and the shielding portion, so that a ventilation cavity is formed between the isolation portion and the FPC body (1) and the shielding portion, and a plurality of second ventilation portions corresponding to the positions of the non-glue areas are arranged on the isolation portion.

2. The heat dissipation shielding film according to claim 1, characterized in that: The plurality of first ventilation parts and the plurality of second ventilation parts are divided into two groups, which are used for air intake and air outlet of the ventilation cavity respectively.

3. The heat dissipation shielding film according to claim 2, characterized in that: The position of the second ventilation portion corresponds to the non-signal line area of ​​the FPC body (1), and the opening position of the second ventilation portion is staggered with the opening position of the second ventilation portion.

4. The heat dissipation shielding film according to claim 3, characterized in that: The shielding part is a shielding paper body (3), the shielding paper body (3) is adhered to the FPC body (1), and the shielding paper body (3) covers the outer shape of the FPC component area (101).

5. The heat dissipation shielding film according to claim 4, characterized in that: The second ventilation portion is a second ventilation hole (301), and the second ventilation hole (301) is arranged on the shielding paper body (3).

6. The heat dissipation shielding film according to claim 5, characterized in that: The isolation portion is an isolation film (2), and an adhesive area is provided on the isolation film (2), and the adhesive area is bonded to the shielding paper body (3).

7. The heat dissipation shielding film according to claim 6, characterized in that: The adhesive area is arranged close to the outer shape of the isolation film (2), and the adhesive area is located in the middle of the non-adhesive area.

8. The heat dissipation shielding film according to claim 7, characterized in that: The first ventilation portion is a first ventilation hole (201), and the first ventilation hole (201) is opened on the isolation membrane (2).

9. The heat dissipation shielding film according to claim 8, characterized in that: The first ventilation hole (201) and the second ventilation hole (301) are both connected to the ventilation cavity to achieve air exchange between the ventilation cavity and the outside air.

10. The heat dissipation shielding film according to claim 9, characterized in that The opening position of the first ventilation hole (201) and the opening position of the second ventilation hole (301) are staggered, and the first ventilation hole (201) and the second ventilation hole (301) are connected via a ventilation cavity.

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