Heat dissipation device and electronic equipment

Abstract

The invention provides a heat dissipation device and electronic equipment. The heat dissipation device comprises a shell, an annular fan blade and a driving part. The end face of the shell is provided with an air inlet and a camera hole, and the side wall is provided with an air outlet. The shell comprises a base and a circular cover body. The base is provided with an annular protruding part, and the annular protruding part and the circular cover body form an annular containing space. The annular protruding part is provided with a plurality of air channels distributed in the circumferential direction. The air channel comprises an air inlet end and an air outlet end, the air inlet end is arranged towards the axis and communicates with the air inlet, and the air outlet end is arranged towards the peripheral side and communicates with the air outlet end. The annular protruding part is provided with a first through hole, and the first through hole corresponds to the camera hole and penetrates through the base. The driving part is located on the side, away from the circular cover body, of the annular fan blade. The driving part drives the annular fan blades to rotate in the annular containing space, so that airflow sequentially passes through the air inlet, the air inlet end, the air duct, the air outlet end and the air outlet, the heat dissipation function is achieved, meanwhile, the space utilization rate of the electronic equipment can be increased, and miniaturization of the electronic equipment is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a heat dissipation device and an electronic equipment. Background Art

[0002] In recent years, as the functions of electronic devices continue to increase, the performance requirements of major components such as memory and processors of electronic devices are becoming higher and higher. However, with the miniaturization of electronic devices, while improving the operating speed of components such as memory and processors, the size of electronic devices inside electronic devices is also required to be smaller and smaller, which leads to the layout of these electronic devices becoming more compact, causing electronic devices to generate more heat per unit area. Therefore, how to use the space of electronic devices to dissipate heat from heat source devices has become an urgent problem to be solved. Summary of the invention

[0003] The present application provides a heat dissipation device and an electronic device, which can improve the space utilization of the electronic device while achieving the heat dissipation function, thereby facilitating the miniaturization of the electronic device.

[0004] In the first aspect, the present application provides a heat dissipation device. The heat dissipation device includes a housing, an annular fan blade and a driving component. Specifically, the housing includes a base and a circular cover. The circular cover is located on one side of the base and connected to the base. An air inlet and a camera hole are provided on the end face of the circular cover, and an air outlet is provided on the side wall of the circular cover. An annular protrusion is provided on the side of the base facing the circular cover, and the peripheral outer wall of the annular protrusion and the peripheral inner wall of the circular cover form an annular storage space, and the annular fan blade is located in the annular storage space. The annular protrusion has a plurality of air ducts. The aforementioned plurality of air ducts are distributed along the circumferential direction of the annular protrusion. Each air duct includes an air inlet end and an air outlet end, the air inlet end is arranged toward the axis of the annular protrusion and communicated with the air inlet, and the air outlet end is arranged toward the peripheral side of the annular protrusion and communicated with the air outlet end. The annular protrusion is also provided with a first through hole, which is arranged corresponding to the camera hole and passes through the base. The driving component is arranged on the side of the annular fan blade away from the circular cover, and is used to drive the annular fan blade to rotate in the annular storage space.

[0005] The above-mentioned heat dissipation device can be applied to electronic equipment, the shell can be used as the appearance shell of the electronic equipment, and the heat source device of the electronic equipment can be placed on the side of the shell away from the circular cover body. When the heat dissipation device is working, the driving component drives the annular fan blade to rotate in the annular storage space. During the rotation of the annular fan blade, the external airflow enters the inside of the heat dissipation device from the air inlet and enters the air duct through the air inlet end. The airflow flows along the air duct and flows out from the air outlet end, and then flows out from the air outlet under the centrifugal action of the annular fan blade, thereby forming a wind flow and taking away the heat generated by the heat source device. In addition, the annular storage space between the circular cover body and the base matches the shape of the annular fan blade, which can reduce the gap between the annular fan blade and the circular cover body, and the gap between the annular fan blade and the base, thereby improving the space utilization rate of the electronic equipment, which is conducive to the miniaturization of the electronic equipment and the thinness of the whole machine.

[0006] In a possible implementation, the annular raised portion includes a plurality of ribs. The plurality of ribs are distributed along the circumferential direction of the circular cover body, and one end of the plurality of ribs is arranged toward the axis in the circumferential direction. Specifically, the plurality of ribs include a plurality of first ribs and a plurality of second ribs. An air duct is formed between two adjacent first ribs. The first through hole penetrates the plurality of second ribs. In this implementation, the plurality of first ribs are used as side walls of the air duct, and the plurality of second ribs can be used as supports for the first through hole.

[0007] In order to dissipate heat better, the above-mentioned multiple ribs can be metal fins to improve the heat dissipation efficiency.

[0008] In a possible implementation, the base has a recessed portion on one side away from the circular cover, the recessed portion is used to avoid the camera module, and the first through hole runs through the recessed portion. When the heat dissipation device is applied to an electronic device, the outer shell of the heat dissipation device can be used as a battery back shell of the electronic device, and the camera module of the electronic device can be arranged in the recessed portion of the heat dissipation device. In this implementation, the heat dissipation device uses the peripheral space of the camera module to set the annular fan blades and driving components, further improving the space utilization of the electronic device, which is conducive to miniaturization of the electronic device.

[0009] In a possible implementation, the side wall of the circular cover is provided with a plurality of the above-mentioned air outlets. By increasing the number of air outlets, the area of ​​the gas discharged from the heat sink can be increased, thereby increasing the amount of gas discharged from the heat sink to improve the heat dissipation efficiency. Specifically, the air outlets are evenly arranged along the circumference of the circular cover so that the gas is evenly discharged from the outer circumference of the circular cover.

[0010] When the annular fan blades are specifically arranged, the annular fan blades include a first annular side plate, a second annular side plate and a plurality of arc-shaped blades. The first side plate and the second side plate are relatively arranged at both ends of the plurality of arc-shaped blades, and the first side plate is arranged close to the circular cover body. The plurality of arc-shaped blades are evenly arranged along the circumferential direction. In this implementation, the plurality of arc-shaped blades are fixed between the first annular side plate and the second annular side plate. When the driving component drives the annular fan blades to rotate, the first annular side plate, the second annular side plate and the plurality of arc-shaped blades rotate as a whole, forming a centrifugal force for driving the gas flow.

[0011] In a possible implementation, the driving component includes an annular rotor and an annular stator. The annular rotor and the annular stator are located in the annular storage space. The annular rotor is fixedly connected to the annular blades, the annular stator is located on the side of the annular rotor away from the annular blades, and the annular stator is used to drive the annular rotor to rotate in the annular storage space. In this implementation, the shape of the driving component corresponds to the shape of the annular blades, further improving the space utilization of the electronic device.

[0012] In addition, the driving component may also be of other types. In a possible implementation, the driving component includes a motor, a transmission gear and a gear bar. The motor is arranged on the side of the base away from the circular cover body, and the motor has an output shaft. The transmission gear is connected to the output shaft, and the transmission gear is meshed with the gear bar. The gear bar is located in the annular storage space and on the side of the annular fan blade away from the circular cover body, and the gear bar is fixedly connected to the annular fan blade.

[0013] The gear bar has a plurality of flat gears, and the tooth tips of the plurality of flat gears are arranged toward the axis of the gear bar. Alternatively, the gear bar has a plurality of bevel gears, and the tooth tips of the plurality of bevel gears are arranged toward the base protrusion.

[0014] In a possible implementation, the heat dissipation device further includes an air inlet cover, which is disposed at the air inlet to prevent foreign matter from entering the heat dissipation device through the air inlet.

[0015] In a possible implementation, the heat dissipation device further includes a transparent cover plate, which is disposed on a side of the circular cover body away from the base and covers the camera hole to prevent small water droplets, particles or dust from entering the camera hole. The transparent cover plate is provided with a second through hole, which is provided corresponding to the air inlet.

[0016] In the second aspect, the present application provides an electronic device. The electronic device includes a housing, a camera module, and a heat dissipation device of the first aspect. Specifically, the housing is provided with a mounting hole. The camera module is located in the housing and extends out of the housing through the mounting hole. The heat dissipation device is arranged at the mounting hole and is located on the side of the housing away from the camera module, and the base is connected to the housing. The first through hole is arranged corresponding to the mounting hole. In the electronic device of the present application, when the heat dissipation device is working, the driving component drives the annular fan blade to rotate in the annular storage space. During the rotation of the annular fan blade, the external airflow enters the heat dissipation device from the air inlet and enters the air duct through the air inlet end. The airflow flows along the air duct and flows out from the air outlet end, and then flows out from the air outlet under the centrifugal action of the annular fan blade, thereby forming a wind flow and taking away the heat generated by the heat source device. In addition, the annular storage space between the circular cover and the base matches the shape of the annular fan blade, which can reduce the gap between the annular fan blade and the circular cover, and the gap between the annular fan blade and the base, thereby improving the space utilization of the electronic device, which is conducive to the miniaturization of the electronic device and the thinness of the whole machine.

[0017] In a possible implementation, the base and the shell are an integrally formed structure, so the shell can be directly used as the appearance shell of the electronic device, further improving the overall lightness and thinness of the electronic device.

[0018] In a possible implementation, the electronic device further includes a heat source device, which is located in the accommodating space and disposed close to the heat dissipation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0020] Figure 2 An exploded view of an electronic device provided in an embodiment of the present application;

[0021] Figure 3 A partial schematic diagram of an electronic device provided in an embodiment of the present application;

[0022] Figure 4 A partial schematic diagram of an electronic device provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of a heat dissipation device provided in an embodiment of the present application;

[0024] Figure 6 Another schematic diagram of the heat dissipation device provided in an embodiment of the present application;

[0025] Figure 7 An exploded schematic diagram of a heat dissipation device provided in an embodiment of the present application;

[0026] Figure 8An exploded schematic diagram of a heat dissipation device provided in an embodiment of the present application;

[0027] Fig. 9 A schematic diagram of a base provided in an embodiment of the present application;

[0028] Fig.10 for Fig. 9 The front view, right view and bottom view of the middle base;

[0029] Fig.11 for Fig.10 A cross-sectional view of the base along the AA direction in the bottom view;

[0030] Fig.12 for Fig.10 A cross-sectional view of the base along the BB direction in the main view;

[0031] Fig.13 Another schematic diagram of a base provided in an embodiment of the present application;

[0032] Fig.14 A schematic diagram of a circular cover provided in an embodiment of the present application;

[0033] Fig.15 Another schematic diagram of a circular cover provided in an embodiment of the present application;

[0034] Fig.16 A schematic diagram of an assembly of a circular cover and a base provided in an embodiment of the present application;

[0035] Fig.17 Another schematic diagram of assembling the circular cover and the base provided in an embodiment of the present application;

[0036] Fig.18 for Fig.16 A cross-sectional view of the middle circular cover and the base along the CC direction;

[0037] Fig.19 Another schematic diagram of assembling the circular cover and the base provided in an embodiment of the present application;

[0038] Fig. 20 A schematic diagram of an assembly of a circular cover, annular fan blades and a base provided in an embodiment of the present application;

[0039] Fig.21 A schematic diagram of an annular fan blade provided in an embodiment of the present application;

[0040] Fig. 22 Another schematic diagram of an annular fan blade provided in an embodiment of the present application;

[0041] Fig.23 A schematic diagram of an assembly of an annular fan blade and a base provided in an embodiment of the present application;

[0042] Fig.24 Another schematic diagram of the assembly of the annular fan blade and the base provided in an embodiment of the present application;

[0043] Fig.25 for Fig.24 A cross-sectional view of the middle annular fan blade and the base along the GG direction;

[0044] Fig.26 Another schematic diagram of the heat dissipation device provided in an embodiment of the present application;

[0045] Fig. 27 A schematic diagram of a driving component provided in an embodiment of the present application;

[0046] Fig.28 Another schematic diagram of a driving component provided in an embodiment of the present application;

[0047] Fig.29 Another schematic diagram of the heat dissipation device provided in an embodiment of the present application;

[0048] Fig.30 Another schematic diagram of the heat dissipation device provided in an embodiment of the present application.

[0049] Reference numerals:

[0050] 10-Electronic device 11-Casing 12-Camera module

[0051] 13- heat dissipation device 14- display screen 15- heat source device

[0052] 111-mounting hole 131-housing 132-annular fan blade

[0053] 133-driving component 1311-base 1312-circular cover

[0054] 1313- annular protrusion 1314- air duct 1315- first through hole

[0055] 1316- rib 1317- recessed portion 1318- annular storage space

[0056] 1319-air inlet cover 1320-transparent cover 1321-first annular side plate

[0057] 1322- second annular side plate 1323- arc-shaped blades 1331- annular rotor

[0058] 1332- annular stator 1333- motor 1334- transmission gear

[0059] 1335-gear bar 13121-air inlet 13122-camera hole

[0060] 13123-air outlet 1314a-air inlet 1314b-air outlet

[0061] 1316a- first rib 1316b- second rib 13201- second through hole DETAILED DESCRIPTION

[0062] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0063] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0064] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0065] In order to facilitate understanding of the heat dissipation device provided in the embodiment of the present application, its application scenario is described below. The heat dissipation device can be applied to electronic devices. The electronic devices include but are not limited to electronic devices with camera functions such as mobile phones, smart wearable devices, tablet computers or laptop computers. Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application, Figure 2 An exploded view of an electronic device provided in an embodiment of the present application. Figure 1 and Figure 2As shown, the electronic device 10 includes a housing 11, a camera module 12 and a heat sink 13. The camera module 12 is located inside the housing 11, and the heat sink 13 is located outside the housing 11. Taking a mobile phone as an example, the electronic device 10 also includes a display screen 14. The display screen 14 is connected to the housing 11 and forms a storage space, and the camera module 12 and other devices of the electronic device 10 are located in the storage space. In the electronic device 10, the display screen 14 serves as a display surface, and the side surface of the housing 11 facing away from the display screen 14 serves as an appearance surface. For example, in one embodiment, the housing 11 is specifically a battery shell of the electronic device 10. When the electronic device 10 is placed on a table, the side surface of the housing 11 facing away from the display screen 14 can contact the table. In addition, the housing 11 is provided with a mounting hole 111, and the camera module 12 can shoot the outside world through the mounting hole 111 to realize the camera function of the electronic device 10. In actual applications, the camera module 12 can be completely located in the shell 11, or a part of the camera module 12 can be located in the shell 11, and the other part (such as the lens) can extend out of the shell 11 through the mounting hole 111.

[0066] As the functions of electronic devices become more and more abundant, the heat dissipation requirements of electronic devices are gradually increasing. At present, the heat dissipation devices of some electronic devices are large in size, which occupies a large space and is not conducive to the miniaturization of electronic devices. Therefore, the present application provides a heat dissipation device and an electronic device, so as to improve the space utilization rate of the electronic device while realizing the heat dissipation function, thereby realizing the miniaturization of the electronic device.

[0067] Figure 3 A partial schematic diagram of an electronic device provided in an embodiment of the present application, Figure 4 A partial schematic diagram of an electronic device provided in an embodiment of the present application. Figure 3 and Figure 4 As shown, the heat sink 13 is arranged on one side of the housing 11. In the present application, the heat sink 13 can be used to dissipate heat from the internal devices of the electronic device 10. In one embodiment, the electronic device 10 further includes a heat source device 15, the heat source device 15 is located in the housing 11, and the heat sink 13 is located outside the housing 11, that is, the heat source device 15 and the heat sink 13 are located on both sides of the housing 11. Specifically, the heat source device 15 can be arranged close to the heat sink 13, so that the heat generated by the heat source device 15 can be directly transferred to the heat sink 13 through the housing 11. Alternatively, the electronic device 10 may include a heat conducting plate, which is located in the housing 11 and connected to the housing 11. The heat source device 15 is attached to the heat conducting plate, and the heat is transferred to the heat sink 13 through the heat conducting plate and the housing 11. In the present application, the heat source device 15 includes but is not limited to a system on chip (SoC), a graphics processing unit (GPU), etc.

[0068] Figure 5 A schematic diagram of a heat dissipation device provided in an embodiment of the present application, Figure 6 Another schematic diagram of the heat dissipation device provided in an embodiment of the present application, Figure 7 An exploded schematic diagram of a heat dissipation device provided in an embodiment of the present application, Figure 8 This is an exploded schematic diagram of the heat dissipation device provided in the embodiment of the present application. Figures 5 to 8 As shown, the heat dissipation device 13 includes a housing 131, an annular fan blade 132 and a driving component 133. Specifically, the housing 131 includes a base 1311 and a circular cover 1312. The base 1311 is disposed in the mounting hole 111 and connected to the housing 11, and the circular cover 1312 is located on a side of the base 1311 away from the housing 11, and the circular cover 1312 is connected to the base 1311. Figure 7 As shown, the base 1311 is provided with an annular protrusion 1313 on one side facing the circular cover 1312. In one embodiment, the base 1311 and the housing 11 may be an integrally formed structure. In another embodiment, the base 1211 and the housing 11 may be connected by different connection methods such as bonding, clamping, welding, etc.

[0069] Fig. 9 A schematic diagram of a base provided in an embodiment of the present application, Fig.10 for Fig. 9 The front view, right view and bottom view of the middle base. Fig.11 for Fig.10 The cross-sectional view of the base along the AA direction in the bottom view, Fig.12 for Fig.10 The cross-sectional view of the base along the BB direction in the main view. Figures 9 to 12 As shown, in the base 1311, the annular protrusion 1313 has a plurality of air ducts 1314, and these air ducts 1314 are distributed along the circumferential direction of the annular protrusion 1313. In this embodiment, the air duct 1314 can be Fig.11 The air duct 1314 may be a straight air duct as shown in the figure, or may be an arc-shaped air duct, a folded-line air duct or other irregularly shaped air duct. Each air duct 1314 includes an air inlet end 1314a and an air outlet end 1314b. The air inlet end 1314a of the plurality of air ducts 1314 is arranged close to the axis of the annular protrusion 1313, and the air outlet end 1314b is arranged close to the circumference of the annular protrusion 1313. Therefore, the air inlet end 1314a of the plurality of air ducts 1314 converges toward the axis of the annular protrusion 1313, and the air outlet end 1314b diverges toward the circumference of the annular protrusion 1313.

[0070] Please continue reading Fig.10The annular protrusion 1313 is also provided with a first through hole 1315. The first through hole 1315 extends from a side surface of the annular protrusion 1313 away from the housing 11 to a side surface of the base 1311 facing the housing 131. The first through hole 1315 is provided corresponding to the lens of the camera module 12, so that the optical axis of the lens can pass through the first through hole 1315. Specifically, the number of the first through holes 1315 can be set according to the number of lenses of the camera module 12.

[0071] like Fig.11 As shown, in one embodiment, the annular protrusion 1313 includes a plurality of ribs 1316. The plurality of ribs 1316 are distributed along the circumferential direction of the circular cover 1312, and one end of the plurality of ribs 1316 is arranged toward the axis of the circumferential direction. The plurality of ribs 1316 include a plurality of first ribs 1316a, and the air duct 1314 is formed between two adjacent first ribs 1316a. In other words, the first rib 1316a extends from the air inlet end 1314a to the air outlet end 1314b, and the two adjacent first ribs 1316a can serve as the side wall of the air duct 1314. The plurality of ribs 1316 also include a plurality of second ribs 1316b. In this embodiment, the second ribs 1316b can serve as a supporting structure for supporting the wall of the first through hole 1315. The first through hole 1315 passes through the plurality of second ribs 1316b. Specifically, the second rib 1316b may extend from the air inlet end 1314a to the wall of the first through hole 1315, and / or, the second rib 1316b may extend from the wall of the first through hole 1315 to the air outlet end 1314b. Therefore, at least a portion of the second rib 1316b is connected to the wall of the first through hole 1315 to achieve a supporting effect.

[0072] In one embodiment, the plurality of ribs 1316 may be heat dissipation fins. The heat generated by the heat source device 15 is transferred to the heat dissipation fins through the housing 11 and heat exchanged with the air flow in the air duct 1314, thereby increasing the heat dissipation rate. In order to accelerate heat transfer, the heat dissipation fins may be metal fins.

[0073] Fig.13 Another schematic diagram of the base provided in the embodiment of the present application. Fig.13 As shown, the base 1311 has a recessed portion 1317 on one side facing the housing 11. When the camera module 12 extends out of the housing 11 through the mounting hole 111, the recessed portion 1317 can be used to accommodate the portion of the camera module 12 extending out of the housing 11. In one embodiment, the annular protrusion 1313 and the recessed portion 1317 can be an integrally formed structure.

[0074] Fig.14 A schematic diagram of a circular cover provided in an embodiment of the present application, Fig.15 Another schematic diagram of a circular cover provided in an embodiment of the present application, wherein: Fig.14 The circular cover 1312 is shown facing away from the housing 11. Fig.15 The circular cover 1312 is shown facing one side surface of the housing 11. Fig.14 and Fig.15 As shown, the end surface of the circular cover 1312 is provided with an air inlet 13121 and a camera hole 13122. The air inlet 13121 is connected to the air inlet end 1314a of the above-mentioned multiple air ducts 1314. The camera hole 13122 is arranged corresponding to the first through hole 1315, so that the optical axis of the lens can pass through the camera hole 13122. The side wall of the circular cover 1312 along the circumferential direction is provided with an air outlet 13123, and the air outlet 13123 is connected to the air outlet end 1314b of the above-mentioned multiple air ducts 1314. In one embodiment, the side wall of the circular cover 1312 can be provided with multiple air outlets 13123, and the multiple air outlets 13123 can be evenly arranged along the circumferential side of the circular cover 1312, so that the air outlet of the heat dissipation device 13 is more uniform.

[0075] Fig.16 This is a schematic diagram of an assembly of a circular cover and a base provided in an embodiment of the present application. Fig.17 Another schematic diagram of assembling the circular cover and the base provided in the embodiment of the present application is shown in FIG. Fig.18 for Fig.16 Cross-sectional view of the circular cover and base along the CC direction, Fig.19 Another schematic diagram of assembling the circular cover and the base provided in the embodiment of the present application, wherein: Fig.19 The right side view of the circular cover and the base, and the cross-sectional view of the cover and the base along the DD direction are shown. Figures 16 to 19 As shown, the circular cover 1312 is connected to the base 1311, so that the circular cover 1312 and the annular protrusion 1313 form an annular storage space 1318. The air inlet 13121 of the circular cover 1312 corresponds to the air inlet end 1314a of the above-mentioned multiple air ducts 1314 and is connected to the air inlet end 1314a. Fig. 20 This is a schematic diagram of an assembly of a circular cover, annular fan blades and a base provided in an embodiment of the present application, wherein: Fig. 20 The bottom view of the circular cover, the annular fan blades and the base, and the cross-sectional view of the circular cover, the annular fan blades and the base along the EE direction are shown. Fig. 20 As shown, the annular blade 132 is located in the annular storage space 1318 and is sleeved on the circumference of the annular protrusion 1313. The annular blade 132 can rotate relative to the annular protrusion 1313. The driving component 133 is arranged on the side of the annular blade 132 away from the circular cover 1312, and is used to drive the annular blade 132 to rotate in the annular storage space 1318.

[0076] When the heat dissipation device 13 is working, the driving component 133 drives the annular blade 132 to rotate relative to the annular protrusion 1313 in the annular storage space 1318. In this process, the airflow enters the heat dissipation device 13 from the air inlet 13121 and enters the air duct 1314 through the air inlet end 1314a. The airflow passes through the air duct 1314 and flows out from the air outlet 1314b, and then flows out from the air outlet 13123 through the centrifugal action of the annular blade 132, thereby taking away the heat generated by the heat source device 15. In the electronic device 10 of the present application, the heat dissipation device 13 realizes the heat dissipation function, and the annular storage space 1318 between the circular cover 1312 and the base 1311 matches the shape of the annular blade 132, which can reduce the gap between the annular blade 132 and the circular cover 1312 and the base 1311, thereby improving the space utilization rate of the electronic device 10, which is conducive to the miniaturization of the electronic device 10 and the thinness of the whole machine.

[0077] Fig.21 A schematic diagram of an annular fan blade provided in an embodiment of the present application, Fig. 22 Another schematic diagram of an annular fan blade provided in an embodiment of the present application, wherein: Fig. 22 The right side view of the annular fan blade and the cross-sectional view of the annular fan blade along the FF direction are shown. Fig.21 and Fig. 22 As shown, the annular fan blade 132 includes a first annular side plate 1321, a second annular side plate 1322 and a plurality of arc-shaped blades 1323. The first annular side plate 1321 and the second annular side plate 1322 are disposed at two ends of the plurality of arc-shaped blades 1323 opposite to each other. Fig.23 A schematic diagram of an assembly of an annular fan blade and a base provided in an embodiment of the present application, Fig.24 Another schematic diagram of the assembly of the annular fan blade and the base provided in the embodiment of the present application, Fig.25 for Fig.24 The cross-sectional view of the middle annular fan blade and the base along the GG direction. Fig.23 , Fig.24 and Fig.25 As shown, the first annular side plate 1321 is disposed close to the circular cover 1312. The plurality of arc-shaped blades 1323 are evenly disposed along the circumferential direction.

[0078] Fig.26 Another schematic diagram of the heat dissipation device provided in the embodiment of the present application. Fig.26As shown, in one embodiment, the driving component 133 includes an annular rotor 1331 and an annular stator 1332. The annular rotor 1331 and the annular stator 1332 are located in the annular storage space 1318 and are sleeved on the circumferential side of the annular protrusion 1313. Among them, the annular rotor 1331 is fixedly connected to the annular blades 132, and the annular stator 1332 is located on the side of the annular rotor 1331 away from the annular blades 132. The annular stator 1332 is used to drive the annular rotor 1331 to rotate relative to the annular protrusion 1313 in the annular storage space 1318, thereby driving the annular blades 132 to rotate. In this embodiment, the driving component 133 is arranged in the annular storage space 1318 and overlaps with the annular blades 132, so that other space of the base 1311 does not need to be occupied, which can further improve the space utilization. In one embodiment, the second annular side plate 1322 of the annular fan blade 132 and the surface shell of the annular rotor 1331 facing the annular fan blade 132 can be an integrally formed structure, thereby further simplifying the structure of the heat dissipation device 13.

[0079] Fig. 27 A schematic diagram of a driving component provided in an embodiment of the present application. Fig. 27 As shown, in another embodiment, the driving component 133 includes a motor 1333, a transmission gear 1334 and a gear bar 1335. The motor 1333 can be arranged on the side of the base 1311 facing the housing 11, for example, the motor 1333 shell is arranged on the recessed portion 1317. The motor 1333 has an output shaft. The transmission gear 1334 is fixedly connected to the output shaft, and the transmission gear 1334 is meshed with the gear bar 1335. The gear bar 1335 is located in the annular storage space 1318 and is located on the side of the annular fan blade 132 away from the circular cover 1312, and the gear bar 1335 is fixedly connected to the annular fan blade 132. When the motor 1333 is working, the output shaft drives the transmission gear 1334 to rotate, so that the gear bar 1335 rotates around the circular inner protrusion, thereby driving the annular fan blade 132 to rotate.

[0080] like Fig. 27 As shown, in one embodiment, the gear bar 1335 has a plurality of flat gears, which are arranged in the circumferential direction and the tooth tips are arranged toward the axis of the gear bar 1335. In other words, the end surfaces of both sides of the gear bar 1335 are flat surfaces. Fig.28 Another schematic diagram of the driving component provided in the embodiment of the present application. Fig.28 As shown, in another embodiment, the gear bar 1335 has a plurality of bevel gears, which are arranged circumferentially and with the tooth tips facing the end surface of the gear bar 1335. In other words, one end surface of the gear bar 1335 is a flat surface, and the other end surface is the plurality of conical teeth.

[0081] Fig.29Another schematic diagram of the heat dissipation device provided in an embodiment of the present application, Fig.30 Another schematic diagram of the heat dissipation device provided in the embodiment of the present application. Fig.29 and Fig.30 As shown, in one embodiment, the heat dissipation device 13 may further include an air inlet cover 1319, which is disposed at the air inlet 13121. Specifically, the air inlet cover 1319 may be a porous structure, which can prevent foreign matter from entering the heat dissipation device 13 through the air inlet 13121 while allowing air to pass through.

[0082] like Fig.29 and Fig.30 As shown, in another embodiment, the heat dissipation device 13 may further include a transparent cover plate 1320, which is disposed on a side of the circular cover body 1312 away from the base 1311, and the transparent cover plate 1320 covers the camera hole 13122. In this embodiment, the transparent cover plate 1320 can prevent small water droplets, particles or dust from entering the camera hole 13122. The transparent cover plate 1320 is provided with a second through hole 13201, and the second through hole 13201 is correspondingly arranged with the air inlet 13121.

[0083] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A heat dissipation device, characterized in that: It includes a housing, annular fan blades and a driving component, wherein: The housing comprises a base and a circular cover, wherein the circular cover is located on one side of the base and connected to the base; an air inlet and a camera hole are arranged on the end surface of the circular cover, and an air outlet is arranged on the side wall of the circular cover; The base is provided with an annular protrusion on one side facing the circular cover body, and the peripheral outer wall of the annular protrusion and the peripheral inner wall of the circular cover body form an annular storage space, and the annular fan blade is located in the annular storage space; the annular protrusion has a plurality of air ducts, and the plurality of air ducts are distributed along the circumferential direction of the annular protrusion; each of the air ducts includes an air inlet end and an air outlet end, the air inlet end is arranged toward the axis of the annular protrusion and is connected with the air inlet, and the air outlet end is arranged toward the peripheral side of the annular protrusion and is connected with the air outlet end; the annular protrusion is also provided with a first through hole, and the first through hole is arranged corresponding to the camera hole and passes through the base; The driving component is arranged on a side of the annular fan blade away from the circular cover body, and is used for driving the annular fan blade to rotate in the annular storage space.

2. The heat dissipation device according to claim 1, characterized in that: The annular raised portion includes a plurality of ribs, the plurality of ribs are distributed along the circumferential direction of the circular cover body, and one end of the plurality of ribs is arranged toward the axis of the circumferential direction; The plurality of ribs include a plurality of first ribs and a plurality of second ribs; the air duct is formed between two adjacent first ribs; and the first through hole penetrates the plurality of second ribs.

3. The heat dissipation device according to claim 2, characterized in that: The plurality of ribs are metal fins.

4. The heat dissipation device according to any one of claims 1 to 3, characterized in that: The base has a recessed portion on one side facing away from the circular cover, and the recessed portion is used to accommodate at least a portion of the camera module, and the first through hole passes through the recessed portion.

5. The heat dissipation device according to any one of claims 1 to 4, characterized in that: The side wall of the circular cover body is provided with a plurality of the air outlets, and the plurality of air outlets are evenly arranged along the circumference of the circular cover body.

6. The heat dissipation device according to any one of claims 1 to 5, characterized in that: The annular fan blades include a first annular side plate, a second annular side plate and a plurality of arc-shaped blades; the first side plate and the second side plate are relatively arranged at two ends of the plurality of arc-shaped blades, and the first side plate is arranged close to the circular cover body; the plurality of arc-shaped blades are evenly arranged along the circumferential direction.

7. The heat dissipation device according to any one of claims 1 to 6, characterized in that: The driving component includes an annular rotor and an annular stator, and the annular rotor and the annular stator are located in the annular storage space; the annular rotor is fixedly connected to the annular fan blades, the annular stator is located on the side of the annular rotor away from the annular fan blades, and the annular stator is used to drive the annular rotor to rotate in the annular storage space.

8. The heat dissipation device according to any one of claims 1 to 6, characterized in that: The driving component includes a motor, a transmission gear and a gear bar; the motor is arranged on the side of the base away from the circular cover body, and the motor has an output shaft; the transmission gear is connected to the output shaft, and the transmission gear is meshed with the gear bar; the gear bar is located in the annular storage space and on the side of the annular fan blade away from the circular cover body, and the gear bar is fixedly connected to the annular fan blade.

9. The heat dissipation device according to claim 8, characterized in that: The gear bar has a plurality of flat gears, and the tooth tips of the plurality of flat gears are arranged toward the axis of the gear bar; Alternatively, the gear bar has a plurality of bevel gears, and the tooth tips of the plurality of bevel gears are arranged toward the end surface direction of the gear bar.

10. The heat dissipation device according to any one of claims 1 to 9, characterized in that: The heat dissipation device also includes an air inlet cover, which is arranged at the air inlet.

11. The heat dissipation device according to any one of claims 1 to 10, characterized in that: The heat dissipation device further comprises a transparent cover plate, which is arranged on a side of the circular cover body away from the base and covers the camera hole, and the transparent cover plate is provided with a second through hole, which is arranged corresponding to the air inlet.

12. An electronic device, characterized in that: The heat dissipation device comprises a housing, a camera module and any one of claims 1 to 11, wherein: The housing is provided with a mounting hole; The camera module is located in the housing and extends out of the housing through the mounting hole; The heat dissipation device is arranged at the mounting hole and is located at a side of the shell away from the camera module. The base is connected to the shell, and the first through hole is arranged corresponding to the mounting hole.

13. The electronic device according to claim 12, characterized in that: The shell and the base are an integrally formed structure.

14. The electronic device according to claim 12 or 13, characterized in that: The electronic device further comprises a heat source device, which is located in the housing and arranged close to the heat dissipation device.

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