Heat dissipation antenna and electronic equipment

Abstract

The invention provides a heat dissipation antenna and electronic equipment. The heat dissipation antenna comprises a heat dissipation body and an antenna radiation main body, the heat dissipation body is provided with a containing cavity with an opening, and the containing cavity is provided with a first side wall, a second side wall and a bottom wall. The antenna radiation main body is arranged in the accommodating cavity, a first end of the antenna radiation main body is fixedly connected with the first side wall, a heat dissipation channel is formed in a connection area, and a preset distance is formed between a second end of the antenna radiation main body and the second side wall; the first side wall, the second side wall, the bottom wall and the antenna radiation main body of the accommodating cavity jointly form an antenna radiation structure; the first side wall forms a first radiating surface of the antenna radiating structure, the second side wall forms a second radiating surface, and the bottom wall forms a reflecting surface; thus, through the integrated design of the antenna radiation main body and the radiator, the radiating antenna is formed, the occupied space of the antenna radiation structure is reduced, the aesthetic property and scene adaptability of the electronic equipment are improved, the radiating effect is good, and the antenna radiation performance is optimized.

Description

Technical Field

[0001] This application relates to heat dissipation antennas, and more particularly to a heat dissipation antenna and electronic device. Background Technology

[0002] With the rapid iteration of mobile computing and smart terminals, electronic devices (such as small industrial control computers) are rapidly developing towards compactness and miniaturization, and the space available for wireless antenna layout inside is constantly being compressed, and the reserved space for wireless antennas is also getting smaller and smaller.

[0003] In related technologies, electronic devices achieve wireless communication by using external stylus antennas. However, external stylus antennas are relatively large and need to protrude from the outside of the device, which not only occupies additional physical space but also has poor aesthetics. Moreover, stylus antennas conflict with the trend of compactness and miniaturization of electronic devices. The protruding stylus antennas also limit the flexibility of electronic devices in confined spaces (such as embedded installations and densely stacked scenarios). Furthermore, the heat dissipation systems of stylus antennas and electronic devices are independent of each other, making it difficult to meet heat dissipation requirements.

[0004] Therefore, a new antenna structure is urgently needed for small electronic devices to solve the above problems. Summary of the Invention

[0005] This application provides a heat dissipation antenna and electronic device to at least solve the above-mentioned problems in the related art.

[0006] To achieve the above objectives, this application provides the following technical solution: a heat dissipation antenna, comprising: The heat sink has an open receiving cavity, which has a first side wall, a second side wall and a bottom wall; An antenna radiating body is disposed in the accommodating cavity. The first end of the antenna radiating body is fixedly connected to the first sidewall and a heat dissipation path is formed in the connection area. A preset distance is formed between the second end of the antenna radiating body and the second sidewall. The first sidewall, second sidewall, and bottom wall of the accommodating cavity, along with the antenna radiating body, together constitute the antenna radiating structure; among which... The first sidewall forms the first radiating surface of the antenna radiation structure, the second sidewall forms the second radiating surface of the antenna radiation structure, and the bottom wall forms the reflecting surface of the antenna radiation structure.

[0007] In some alternative embodiments, the antenna radiating body and the heat sink are an integrated structure; or, The antenna radiating body and the heat sink are separate structures, and the first end of the antenna radiating body is fixed to the first side wall by welding or threaded connection.

[0008] In some alternative embodiments, a plurality of preset distances are formed between the second end of the antenna radiating body and the second sidewall, each preset distance being adapted to the resonance of the corresponding frequency band.

[0009] In some alternative embodiments, a first distance and a second distance are formed between the second end of the antenna radiating body and the second sidewall; The initial distance is 2.5mm-4.0mm to accommodate resonance in the 2.4GHz frequency band; The second distance is 1.2mm-2.2mm to accommodate resonance in the 5GHz band.

[0010] In some alternative embodiments, the distance between the antenna radiating body and the bottom wall is D, where D satisfies the formula: 7mm≤D≤10mm.

[0011] In some alternative embodiments, the heat sink is a metal heat sink fin.

[0012] In some alternative embodiments, the antenna radiating body is provided with an antenna radiation pattern, which is used to form the resonant circuit of the antenna.

[0013] In some alternative embodiments, there are two antenna radiating structures, which are spaced apart at the edge region of the heat sink.

[0014] In some optional embodiments, this application also provides an electronic device, the electronic device comprising: Equipment body; A heat dissipation antenna is electrically connected to the main body of the device via an RF transmission line; among which... The antenna radiating body is equipped with a feed point, and the radio frequency transmission line is fixed to the feed point by welding.

[0015] In some alternative embodiments, the electronic device further includes a housing body, a heat dissipation antenna cover on the housing body, the housing body and the heat dissipation antenna forming a receiving cavity, the device body being housed in the receiving cavity and mounted on the heat dissipation antenna.

[0016] In the aforementioned heat dissipation antenna, on one hand, by integrating the antenna radiating structure with the heat sink to form a heat dissipation antenna structure, the antenna radiating body is built into the housing cavity of the heat sink, eliminating the need for additional external space or a separate antenna installation area. This allows for structural reuse between the antenna radiating body and the heat sink, maximizing space utilization and significantly reducing the volume of the antenna radiating structure. On the other hand, by embedding the antenna radiating body within the housing cavity of the heat sink, without any external protruding structures, it can flexibly adapt to confined spaces while maintaining an aesthetically pleasing appearance. Furthermore, by fixing the antenna radiating body to the heat sink and forming a heat dissipation path, the heat generated by the antenna radiating body during operation can be quickly dissipated through the heat sink, improving the heat dissipation effect. Simultaneously, the first and second sidewalls of the housing cavity serve as radiating surfaces, and the bottom wall serves as a reflecting surface, forming a cooperative antenna radiating structure with the antenna radiating body. The reflecting surface enhances the radiation intensity, and the first and second sidewalls extend the radiation direction. A preset distance ensures that the antenna can operate stably in the target frequency band, thereby improving communication stability. In this way, by integrating the antenna radiating body with the heat sink to form a heat-dissipating antenna, the space occupied by the antenna radiating structure is reduced, the aesthetics of electronic devices are improved, the adaptability to different scenarios is enhanced, the heat dissipation effect is better, and the antenna radiation performance is optimized.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0018] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0019] Figure 1 A schematic diagram of the heat dissipation antenna in an embodiment of this application is shown; Figure 2 It shows Figure 1 A top view of the heat dissipation antenna structure; Figure 3 It shows Figure 1 Schematic diagram of the main structure of the heat dissipation antenna; Figure 4 An exploded view of the electronic device in an embodiment of this application is shown; Figure 5 A 3D distribution diagram of the magnetic field of the heat dissipation antenna in the 2.4GHz band in an embodiment of this application is shown; Figure 6 A 3D distribution diagram of the magnetic field of the heat dissipation antenna in the 5GHz band in an embodiment of this application is shown; Figure 7 The S11 parameter diagram of the heat dissipation antenna is shown; Figure 8 The diagram shows the antenna efficiency parameters of the heat dissipation antenna in the embodiment of this application.

[0020] Explanation of the labels in the diagram: In the figure: 10, heat dissipation antenna; 11, heat sink; 111, accommodating cavity; 1111, first side wall; 1112, second side wall; 1113, bottom wall; 12, antenna radiating body; 121, first slot; 122, second slot; 123, feed point; 20, main body of the equipment; 30, shell body. Detailed Implementation

[0021] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In related technologies, electronic devices achieve wireless communication by using external stylus antennas. However, external stylus antennas are relatively large and need to protrude from the outside of the device, which not only occupies additional physical space but also has poor aesthetics. Moreover, stylus antennas conflict with the trend of compactness and miniaturization of electronic devices, and the protruding stylus antennas also limit the flexibility of electronic devices in confined spaces (such as embedded installations and densely stacked scenarios). Furthermore, the heat dissipation systems of stylus antennas and electronic devices are independent of each other, making it difficult to meet heat dissipation requirements.

[0025] To solve the above problems, researchers discovered that by directly designing the antenna radiating body on the heat sink to form a heat dissipation antenna, the antenna has good heat dissipation effect, small size and no external protrusion structure, and can meet the flexibility of deployment in confined spaces.

[0026] Combination Figure 1 , Figure 1 This is a schematic diagram of the structure of a heat dissipation antenna. In some embodiments, the heat dissipation antenna 10 includes a heat sink 11 and an antenna radiating body 12. The heat sink 11 has an open accommodating cavity 111, which has a first sidewall 1111, a second sidewall 1112, and a bottom wall 1113. The antenna radiating body 12 is disposed within the accommodating cavity 111. The first end of the antenna radiating body 12 is fixedly connected to the first sidewall 1111, and a heat dissipation path is formed in the connection area. A preset distance is formed between the second end of the antenna radiating body 12 and the second sidewall 1112. The first sidewall 1111, the second sidewall 1112, the bottom wall 1113, and the antenna radiating body 12 of the accommodating cavity 111 together constitute the antenna radiating structure. The first sidewall 1111 forms the first radiating surface of the antenna radiating structure, the second sidewall 1112 forms the second radiating surface of the antenna radiating structure, and the bottom wall 1113 forms the reflecting surface of the antenna radiating structure.

[0027] In the aforementioned heat dissipation antenna 10, on one hand, by integrating the antenna radiating structure with the heat sink 11 to form the heat dissipation antenna 10, the antenna radiating body 12 is built into the receiving cavity 111 of the heat sink 11, eliminating the need for additional external space or a separate antenna installation area. This achieves structural reuse between the antenna radiating body 12 and the heat sink 11, maximizing space utilization and significantly reducing the volume of the antenna radiating structure. On the other hand, by embedding the antenna radiating body 12 within the receiving cavity 111 of the heat sink 11, without any external protruding structures, it can flexibly adapt to confined spaces while maintaining an aesthetically pleasing appearance. Furthermore... By fixing the antenna radiating body 12 to the heat sink 11 and forming a heat dissipation path, the heat generated by the antenna radiating body 12 during operation can be quickly dissipated through the heat sink 11, improving the heat dissipation effect. Simultaneously, the first sidewall 1111 and the second sidewall 1112 of the accommodating cavity 111 serve as radiating surfaces, and the bottom wall 1113 serves as a reflecting surface, forming a cooperative antenna radiating structure with the antenna radiating body 12. The reflecting surface enhances the radiation intensity, and the first sidewall 1111 and the second sidewall 1112 extend the radiation direction. A preset distance ensures that the antenna can operate stably in the target frequency band, thereby improving communication stability. Thus, by integrating the antenna radiating body 12 and the heat sink 11 into a heat-dissipating antenna 10, the space occupied by the antenna radiating structure is reduced, the aesthetics of the electronic device are improved, scene adaptability is enhanced, heat dissipation is improved, and antenna radiation performance is optimized.

[0028] In some embodiments, the antenna radiating body 12 and the heat sink 11 are an integral structure; or, the antenna radiating body 12 and the heat sink 11 are separate structures, and the first end of the antenna radiating body 12 is fixed to the first sidewall 1111 by welding or threaded connection.

[0029] Thus, two connection methods are provided for the antenna radiating body 12 and the heat sink 11 (integrated and separate welding). The integrated structure can improve structural stability and heat dissipation efficiency, and reduce assembly steps; the separate welding structure is easier to process and can be flexibly adapted to different scenarios. Both methods can ensure the effective combination of the antenna and the heat sink 11, and ensure the reliability of heat dissipation and antenna performance.

[0030] During processing, the integrated heat dissipation antenna 10 can be produced by aluminum extrusion and machining, while the split heat dissipation antenna 10 can be produced by aluminum extrusion to create a heat sink 11, and by aluminum extrusion or machining to create an antenna radiating body 12. The antenna radiating body 12 and the heat sink 11 are then fixed together by welding.

[0031] In some optional embodiments, the antenna radiating body 12 and the heat sink 11 are made of the same material. Exemplarily, the antenna radiating body 12 and the heat sink 11 can be made of aluminum, aluminum alloy, or copper, etc. When using aluminum alloy, the impedance matching of the antenna in the range of -20°C to 70°C mainly manifests as a frequency shift of approximately 0.1%-0.5%, which has a negligible impact on antenna efficiency (approximately 1 dB) and can meet the requirements for use in extreme environments.

[0032] It should be noted that the heat sink 11, as a good conductor, can not only enhance heat dissipation through fins, but also serve as part of the antenna radiating surface. Its surface current distribution resonates with the antenna radiating body, thus avoiding the shielding interference of metal on the signal.

[0033] In some embodiments, the outer surfaces of the antenna radiating body 12 and the heat sink 11 are painted to form a protective layer. Because the antenna transmits high-frequency signals during operation and has no direct current, dust and water do not interfere with the transmission of the frequency signals and will not affect its performance, thus meeting the IP6X protection requirements for industrial products. The heat dissipation antenna is an industrial product and must also meet the corresponding dustproof standards. It should be noted that IP6X is a dustproof rating standard established by the International Electrotechnical Commission (IEC), which means complete protection against the intrusion of foreign objects and dust, and belongs to the highest level of dustproof protection.

[0034] Combination Figure 1 In some embodiments, a plurality of preset distances are formed between the second end of the antenna radiating body 12 and the second sidewall 1112, and each preset distance is adapted to the resonance of the corresponding frequency band.

[0035] In this way, by setting multiple preset distances, the antenna can be adapted to multiple [various devices / families]. Frequency band resonance improves the antenna's frequency band adaptability, meets the usage requirements of electronic devices in different wireless communication frequency bands, and enhances the versatility and practicality of the devices.

[0036] It should be noted that the second end of the antenna radiating body 12 can be processed into a stepped structure to form multiple preset distances, and each step forms a corresponding preset distance with the second sidewall 1112.

[0037] Combination Figure 2 , Figure 2 This is a top view of the heat dissipation antenna structure; in some embodiments, a first distance and a second distance are formed between the second end of the antenna radiating body 12 and the second sidewall 1112; the first distance is A, where A satisfies the formula: 2.5mm≤A≤3.5.0mm, to adapt to the resonance of the 2.4GHz frequency band; the second distance is B, where B satisfies the formula: 1.2mm≤B≤2.2mm, to adapt to the resonance of the 5GHz frequency band.

[0038] In this way, by designing the first distance between 2.5mm and 3.5mm, the reasonable range of resonance in the 2.4GHz band is covered, and by designing the second distance between 1.2mm and 2.2mm, the reasonable range of resonance in the 5GHz band is covered. This allows the antenna to be specifically optimized for the resonance performance of these two commonly used wireless communication frequency bands, ensuring communication quality in mainstream wireless frequency bands and improving the accuracy and practicality of the antenna design.

[0039] In some optional embodiments, the first distance can be 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, or 3.5mm, and the second distance can be 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, or 2.2mm.

[0040] Combination Figure 3 , Figure 3This is a schematic diagram of the main structure of the heat dissipation antenna. In some embodiments, the distance between the antenna radiating body 12 and the bottom wall 1113 is D, where D satisfies the formula: 7mm ≤ D ≤ 10mm. This limits the range of distance between the antenna radiating body 12 and the bottom wall 1113. This parameter setting optimizes the antenna's radiation performance, ensuring effective signal radiation even in a compact space. By designing the distance range to be greater than 7mm, signal attenuation due to excessively small distances is avoided. Simultaneously, by designing the distance range to be less than 10mm, the overall thickness of the heat dissipation antenna 10 is reduced, preventing it from occupying too much space. Therefore, limiting the distance range between the antenna radiating body 12 and the bottom wall 1113 to between 7mm and 10mm balances the performance and space requirements of the heat dissipation antenna 10.

[0041] Combination Figure 1 In some embodiments, the heat sink 11 is a metal heat sink fin.

[0042] Thus, by using metal heat sink fins as the heat sink 11, the high thermal conductivity of the metal material and the large heat dissipation area of ​​the fin structure are utilized to enhance the heat dissipation effect. At the same time, the metal material can be used as part of the antenna radiation structure, further improving the rationality and effectiveness of the integrated design of the antenna and the heat sink 11.

[0043] Combination Figure 2 In some embodiments, the antenna radiating body 12 is provided with an antenna radiating pattern, which is used to form the resonant circuit of the antenna. Specifically, the antenna radiating pattern includes a first slot 121 and a second slot 122, the first slot 121 and the second slot 122 are connected and extend along the length direction of the antenna radiating body 12.

[0044] In this way, by setting the antenna radiation pattern on the antenna radiating body 12, the resonant circuit of the antenna can be accurately constructed, the impedance matching and radiation efficiency of the antenna can be optimized, and the antenna can maintain good communication performance in a compact structure, thus improving the professionalism and performance stability of the antenna design.

[0045] Combination Figure 1 In some embodiments, there are two antenna radiating structures, which are spaced apart and distributed along the edge region of the heat sink 11. This arrangement of two spaced-apart antenna radiating structures improves the stability and transmission rate of wireless communication, making it particularly suitable for electronic devices with high communication quality requirements, thus enhancing the device's communication performance and anti-interference capabilities.

[0046] Specifically, in combination Figure 1The metal heat sink fins include a base plate, multiple fins, and two side plates. The two side plates are spaced apart along the length direction of the base plate (that is, the length direction of the antenna radiating body 12) and fixedly connected to both ends of the base plate. The multiple fins are spaced apart along the length direction of the base plate and fixedly connected to the base plate. The base plate has accommodating cavities 111 at both ends of the length direction. Each accommodating cavity is formed by a corresponding side plate, the base plate, and a fin adjacent to the side plate. The first side wall 1111 of the accommodating cavity 111 is formed by the fin, the second side wall 1112 is formed by the side plate, and the bottom wall 1113 is formed by the base plate.

[0047] Combination Figure 2 In some embodiments, an electronic device includes a device body 20 and a heat dissipation antenna 10. The heat dissipation antenna 10 is electrically connected to the device body 20 via a radio frequency transmission line. A feed point 123 is provided on the antenna radiating body 12. One end of the radio frequency transmission line is fixed to the feed point 123 by welding, and the other end of the radio frequency transmission line is fixedly connected to the device body 20. For example, the electronic device can be a small industrial control computer.

[0048] In this way, the heat dissipation antenna 10 is applied to electronic devices and electrically connected to the main body 20 of the device through a radio frequency transmission line. The feed point 123 is fixed by welding, which ensures the stability and reliability of signal transmission. At the same time, the heat dissipation antenna 10 takes into account both heat dissipation and communication functions, meets the development needs of compact and miniaturized electronic devices, and improves the integration and practicality of the device.

[0049] In some embodiments, a through hole is also provided on the bottom wall 1113 of the accommodating cavity 111 so that the radio frequency transmission line can pass through and be electrically connected to the main body of the electronic device.

[0050] Combination Figure 4 , Figure 4 This is an exploded structural diagram of an electronic device; in some embodiments, the electronic device also includes a housing body 30, and a heat dissipation antenna 10 is disposed on the housing body 30. Together, they form the outer shell structure of the electronic device. The housing body 30 and the heat dissipation antenna 10 surround and form a storage cavity. The device body 20 is stored in the storage cavity and installed on the heat dissipation antenna 10.

[0051] In this way, the housing body 30 and the heat dissipation antenna 10 form a storage cavity, in which the main body of the device 20 is housed and installed on the heat dissipation antenna 10, achieving a compact layout of the device and making full use of space. At the same time, the heat dissipation antenna 10, as part of the outer shell structure of the electronic device, can store and protect the main body of the device 20, and also has the functions of heat dissipation and wireless communication. It can also directly dissipate heat from the internal main body of the device 20, improving heat dissipation efficiency, and can also realize wireless communication function. Furthermore, it avoids the protruding design of external antennas, enhancing the flexibility and aesthetics of the electronic device in confined spaces.

[0052] Example Combination Figure 2 The length L of the antenna radiating body 12 is designed to be 42.8 mm. The width H1 of the antenna radiating body 12 in the region forming the first distance is 7.78 mm, and the width H2 of the antenna radiating body 12 in the region forming the second distance is 9.28 mm. The first distance A is 3.2 mm, and the second distance B is 1.7 mm. The antenna radiating pattern includes a first slot 121 and a second slot 122, which are connected and extend along the length direction of the antenna radiating body 12. The length of the first slot 121 is 15.1 mm, and the length of the second slot 122 is 11.8 mm. There are two antenna radiating structures, which are symmetrically arranged.

[0053] Based on the structural parameters of the heat dissipation antenna 10 in this embodiment, electromagnetic simulation software can be used to obtain simulation results. Figure 5-8 , Figure 5 This is a 3D distribution diagram of the magnetic field of the heat dissipation antenna 10 in the 2.4GHz frequency band in this embodiment. Figure 6 This is a 3D distribution diagram of the magnetic field of the heat dissipation antenna 10 in the 5GHz band in this embodiment. Figure 7 Here is the S11 parameter diagram for heat dissipation antenna 10. Figure 8 This is a diagram showing the antenna efficiency parameters of the heat dissipation antenna 10 in this embodiment. The electromagnetic simulation software is existing technology and will not be described in detail here. The S11 parameter is the return loss, which is a core indicator for measuring the antenna signal matching degree. The smaller the S11 value, the better the impedance matching between the antenna and the RF transmission line, the lower the proportion of RF signal reflected back to the main body of the device, and the higher the proportion of energy that can be radiated.

[0054] Depend on Figure 5 It can be seen that the magnetic field energy is symmetrically and continuously distributed from the antenna radiating body to the first sidewall 1111, the second sidewall 1112, and the external space of the accommodating cavity 111, with no obvious magnetic field blind zone or local energy drop area. This indicates that the antenna radiating body and the sidewalls and bottom walls of the heat sink accommodating cavity 111 form a cooperative radiating structure. Figure 6 It can be seen that the symmetrical distribution centered on the antenna radiating body 12, and the energy coverage range conforming to the transmission characteristics of the high-frequency band, with high-frequency energy concentrated in the near field, and the figure showing that the energy can effectively extend to the space required for communication outside the device. This indicates that the parameter design of the antenna radiating body 12 is precisely adapted to the resonance requirements of the 5GHz band, achieving effective radiation in this band, confirming that both bands have good radiation effects. Therefore, it has good radiation effects in both the 2.4GHz and 5GHz electromagnetic waves, meeting user needs.

[0055] Depend on Figure 7It can be seen that the antenna exhibits low return loss in both the 2.4GHz and 5GHz bands, indicating that it possesses basic impedance matching capability in these bands. Radio frequency energy can be partially converted into effective radiation, enabling simultaneous wireless communication functionality in both the 2.4GHz and 5GHz bands. Figure 8 It can be seen that the antenna gain of the heat dissipation antenna 10 is greater than -4dB in the 2.4GHz band and greater than -4.5dB in the 5GHz band, indicating that the radiation performance of the heat dissipation antenna 10 far exceeds the available standards; it demonstrates that the radiating antenna in this application has strong radiation capability, high environmental adaptability and excellent design quality, and can provide reliable protection for the long-distance communication, anti-interference performance and stability of electronic equipment.

[0056] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heat dissipation antenna (10), characterized in that, The heat dissipation antenna (10) includes: The heat sink (11) has an open receiving cavity (111), the receiving cavity (111) having a first side wall (1111), a second side wall (1112) and a bottom wall (1113). The antenna radiating body (12) is disposed in the accommodating cavity (111). The first end of the antenna radiating body (12) is fixedly connected to the first side wall (1111) and a heat dissipation channel is formed in the connection area. A preset distance is formed between the second end of the antenna radiating body (12) and the second side wall (1112). The first sidewall (1111), second sidewall (1112), bottom wall (1113) of the accommodating cavity (111) and the antenna radiating body (12) together constitute the antenna radiating structure; wherein, The first sidewall (1111) forms the first radiating surface of the antenna radiating structure, the second sidewall (1112) forms the second radiating surface of the antenna radiating structure, and the bottom wall (1113) forms the reflecting surface of the antenna radiating structure.

2. The heat dissipation antenna (10) according to claim 1, characterized in that, The antenna radiating body (12) and the heat sink (11) are an integral structure; or, The antenna radiating body (12) and the heat sink (11) are separate structures, and the first end of the antenna radiating body (12) is fixed to the first side wall (1111) by welding, riveting or threading.

3. The heat dissipation antenna (10) according to claim 1, characterized in that, A plurality of preset distances are formed between the second end of the antenna radiating body (12) and the second sidewall (1112), and each preset distance is adapted to the resonance of the corresponding frequency band.

4. The heat dissipation antenna (10) according to claim 3, characterized in that, A first distance and a second distance are formed between the second end of the antenna radiating body (12) and the second sidewall (1112); The first distance is 2.5mm-4.0mm to accommodate resonance in the 2.4GHz frequency band; The second distance is 1.2mm-2.2mm to accommodate resonance in the 5GHz band.

5. The heat dissipation antenna (10) according to claim 1, characterized in that, The distance between the antenna radiating body (12) and the bottom wall (1113) is D, where D satisfies the formula: 7mm≤D≤10mm.

6. The heat dissipation antenna (10) according to claim 1, characterized in that, The heat sink (11) is a metal heat sink fin.

7. The heat dissipation antenna (10) according to claim 1, characterized in that, The antenna radiating body (12) is provided with an antenna radiating pattern, which is used to form the resonant circuit of the antenna.

8. The heat dissipation antenna (10) according to claim 1, characterized in that, There are two antenna radiating structures, which are distributed at intervals along the edge region of the heat sink (11).

9. An electronic device, characterized in that, The electronic device includes: Equipment body (20); The heat dissipation antenna (10) as described in any one of claims 1-8 is electrically connected to the device body (20) via a radio frequency transmission line; wherein, The antenna radiating body (12) is provided with a feed point (123), and the radio frequency transmission line is fixed to the feed point (123) by welding.

10. The electronic device according to claim 9, characterized in that, The electronic device also includes a housing body (30), the heat dissipation antenna (10) is covered on the housing body (30), the housing body (30) and the heat dissipation antenna (10) surround to form a storage cavity, the device body (20) is stored in the storage cavity and installed on the heat dissipation antenna (10).

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