Terminal device

Abstract

The present application relates to the technical field of electronic devices, and provides a terminal device, used for solving the problem of poor heat dissipation performance and safety of terminal devices. The terminal device provided by the present application comprises a display screen, a middle frame, and a back plate, the middle frame is connected between the display screen and the back plate, and the middle frame and the back plate define an accommodating cavity; the terminal device further comprises a cover plate and a lens assembly, the back plate has an outer plate surface facing away from the display screen, and the cover plate is arranged on the back plate and protrudes from the outer plate surface; the lens assembly is located in the accommodating cavity, the cover plate is provided with a light-transmitting hole, and the lens assembly is used for collecting an external image through the light-transmitting hole; the cover plate has a first outer surface, an included angle is formed between the first outer surface and the outer plate surface, the first outer surface is provided with a plurality of ventilation holes, and the mean ratio of the cross-sectional area to the perimeter of the ventilation holes is smaller than or equal to 0.25 mm. The first outer surface of the cover plate is provided with the plurality of ventilation holes for air circulation, and the cross-sectional dimensions of the ventilation holes are reasonably limited, so that the terminal device can achieve effective balance between heat dissipation performance and safety.

Description

A terminal device

[0001] Cross-reference of related applications

[0002] This application claims priority to Chinese Patent Application No. 202410697056.0, filed on May 30, 2024, entitled "A Terminal Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electronic equipment technology, and more particularly to a terminal device. Background Technology

[0004] With the continuous improvement of terminal device performance, the power consumption and heat generation of these devices have also increased significantly. Therefore, heat dissipation is necessary to ensure the working performance and safety of terminal devices. Currently, passive heat dissipation methods are commonly used in terminal devices. Taking mobile phones as an example, the chip in a mobile phone is one of the main components generating significant heat. Materials with high thermal conductivity, such as graphene, are typically used to conduct the heat from the chip to the phone's casing, and then dissipate it to the outside, thus achieving heat dissipation for the chip. In practical applications, to meet the need for good portability, terminal devices are relatively small in size, resulting in a small heat dissipation area, which is no longer sufficient to meet the increasing heat dissipation requirements. Therefore, how to improve the heat dissipation performance of terminal devices has become an urgent technical problem to be solved. Summary of the Invention

[0005] This application provides a terminal device with better heat dissipation.

[0006] The terminal device provided in this application includes a display screen, a mid-frame, and a back panel. The display screen and the back panel are positioned opposite each other, and the mid-frame connects the display screen and the back panel, forming a receiving cavity. The terminal device also includes a cover plate and a lens assembly. The back panel has an outer surface facing away from the display screen, and the cover plate is disposed on the back panel and protrudes from the outer surface. The lens assembly is located within the receiving cavity, and the cover plate has light-transmitting holes through which the lens assembly captures external images. The cover plate has a first outer surface at an angle to the outer panel surface, and the first outer surface has multiple ventilation holes, each with a cross-sectional area to perimeter ratio of less than or equal to 0.25 mm. In the terminal device provided in this application, the cover plate effectively connects and transitions the lens assembly and the back panel, thereby ensuring the integrity and continuity of the terminal device. Furthermore, the cover plate effectively protects the lens assembly, reducing the risk of damage to the lens assembly. The first outer surface of the cover plate has multiple ventilation holes for air circulation, thereby effectively improving the heat dissipation performance of the terminal device. The ratio of the cross-sectional area to the perimeter of the ventilation holes is less than or equal to 0.25 mm. By reasonably limiting this ratio, the ventilation performance and the ability to block foreign objects are effectively balanced. This results in low airflow resistance when air flows through the ventilation holes and effectively prevents larger foreign objects from entering the air duct, thus ensuring the safety of the terminal equipment. Furthermore, the angle between the first outer surface and the outer panel not only effectively reduces the probability of foreign object intrusion but also improves the overall integrity of the terminal equipment and the user experience.

[0007] In specific settings, the angle between the first outer surface and the outer panel is less than or equal to 90°. When the angle between the first outer surface and the outer panel is less than 90°, the viewing angle of the first outer surface will decrease, making the first outer surface appear lower visually. Therefore, the visual appearance of the ventilation hole can be further reduced, which is beneficial to improving the integration of the terminal equipment and also reduces the probability of foreign objects entering the ventilation hole.

[0008] In one example, the first outer surface is connected to the outer panel, so that the first surface can not only effectively connect to the back panel, but also provide an effective installation position for the ventilation holes, thus making full use of the first surface.

[0009] In specific configurations, the first outer surface can be either a plane or a concave surface. Alternatively, the outer panel may include both planes and concave surfaces. When the first outer surface is concave, its viewing angle decreases, making it appear lower visually. This further reduces the visual appearance of the ventilation opening, improving the overall integrity of the terminal device. Furthermore, compared to planes or convex surfaces, concave surfaces, due to their concave structural characteristics, effectively reduce the probability of foreign object contact, thus significantly decreasing the likelihood of foreign objects intruding into the ventilation opening.

[0010] In one example, the cross-sectional shape of the ventilation opening can be any of the following: rectangular, star-shaped, elliptical, or strip-shaped. This means the cross-sectional shape of the ventilation opening offers good flexibility. In specific installations, the cross-sectional shape of the ventilation opening can be flexibly selected according to actual needs.

[0011] In practice, each ventilation opening has the same cross-section. Alternatively, among multiple ventilation openings, at least two may have different cross-sections. The cross-sectional shape of the ventilation openings can be flexibly selected according to actual needs.

[0012] In one example, the cover plate includes a sidewall, with a first outer surface located on the outer surface of the sidewall. The sidewall can be fixedly connected to a backplate, and the outer surface of the sidewall can also be used as the first outer surface.

[0013] In one example, the terminal device includes an air duct with multiple ventilation holes, including air inlets and outlets, connected by the air duct. The air duct is either isolated from or connected to the receiving cavity. When the air duct is isolated from the receiving cavity, it effectively prevents moisture, dust, and other impurities from entering the receiving cavity, thereby improving the airtightness and security of the terminal device. Conversely, when the air duct is connected to the receiving cavity, air can flow through the receiving cavity, effectively dissipating heat from chips and other components within it, thus improving the terminal device's heat dissipation performance.

[0014] In one example, the cover also includes at least one partition located within the air duct, and the partition has a connecting hole extending through its thickness. The partition effectively blocks external foreign objects, thereby enhancing the security of the terminal equipment.

[0015] In specific settings, the ratio of the cross-sectional area to the perimeter of the connecting hole is less than or equal to 0.25 mm. By reasonably limiting the ratio of the cross-sectional area to the perimeter of the connecting hole, the ventilation performance and the ability to block foreign objects can be effectively balanced. This results in low flow resistance when air flows through the connecting hole and effectively prevents large foreign objects from entering the air duct, thus ensuring the safety of the terminal equipment.

[0016] In one example, the vertical projection of the connecting hole on the first outer surface intersects with the ventilation hole. This staggered arrangement enhances the baffle's ability to block foreign objects. For instance, when external foreign objects enter through the ventilation hole, the baffle can effectively block them, preventing further intrusion into the air duct through the connecting hole.

[0017] In one example, the terminal device also includes a gas flow component located within an air duct. This component allows outside air to enter the duct through an air inlet and exit through an air outlet. By incorporating the gas flow component, the airflow velocity can be increased, thereby improving the heat dissipation performance of the terminal device. Specifically, the gas flow component can be a fan or a piezoelectric pump, or other device that promotes airflow. Furthermore, one, two, or more gas flow components can be installed within the air duct. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural diagram of a conventional mobile phone provided in an embodiment of this application;

[0019] Figure 2 is a three-dimensional structural diagram of a terminal device provided in an embodiment of this application;

[0020] Figure 3 is an exploded structural diagram of a terminal device provided in an embodiment of this application;

[0021] Figure 4 is a cross-sectional structural diagram of a terminal device provided in an embodiment of this application;

[0022] Figure 5 is a schematic diagram of the planar structure of a terminal device provided in an embodiment of this application;

[0023] Figure 6 is a schematic diagram of an application scenario of a terminal device provided in an embodiment of this application;

[0024] Figure 7 is a plan view showing a ventilation hole according to an embodiment of this application;

[0025] Figure 8 is a plan view showing the ventilation holes provided in an embodiment of this application;

[0026] Figure 9 is a plan view showing the ventilation holes provided in an embodiment of this application;

[0027] Figure 10 is a plan view showing the ventilation holes provided in an embodiment of this application;

[0028] Figure 11 is a plan view showing the ventilation holes provided in an embodiment of this application;

[0029] Figure 12 is a plan view showing the ventilation holes provided in an embodiment of this application;

[0030] Figure 13 is a three-dimensional structural diagram of a cover plate provided in an embodiment of this application;

[0031] Figure 14 is a partial cross-sectional structural diagram of a terminal device provided in an embodiment of this application;

[0032] Figure 15 is a three-dimensional structural diagram of another terminal device provided in an embodiment of this application;

[0033] Figure 16 is a three-dimensional structural diagram of another terminal device provided in an embodiment of this application;

[0034] Figure 17 is a three-dimensional structural diagram of another cover plate provided in an embodiment of this application;

[0035] Figure 18 is a partial cross-sectional structural diagram of another terminal device provided in an embodiment of this application;

[0036] Figure 19 is a cross-sectional structural diagram of another terminal device provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 01-Mobile phone; 011-Display screen; 012-Middle frame; 013-Back panel; 014-Chip; 10-Terminal device; 11-Display screen; 12-Middle frame; 13-Back panel; 14-Cover plate; 15-Lens assembly; 16-Gas flow component; 100-Receiving cavity; 101-Chip; 121-Middle plate; 122-Frame; 130-Outer plate surface; 131-Area; 140-First outer surface; 141-Light transmission hole; 142-Ventilation hole; 143-Board; 144-Side wall; 145-Partition; 146-Partition; 1420-Air duct; 142a-Air inlet; 142b-Air outlet; 144a-Side wall; 144b-Side wall; 1451-Connecting hole; 1461-Connecting hole. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0039] The terminal device provided in this application embodiment can be various types of devices such as mobile phones, tablets, and e-readers. The backplane assembly can be used in the terminal device to enhance its heat dissipation performance.

[0040] For example, as shown in Figure 1, in a conventional mobile phone 01 provided in this application, the mobile phone 01 may include a display screen 011, a mid-frame 012, and a back panel 013. The display screen 011 and the back panel 013 are arranged opposite to each other, and the mid-frame 012 is connected between the display screen 011 and the back panel 013. Circuit boards, batteries, chips 014, and other devices can be placed between the display screen 011 and the back panel 013. In practical applications, electronic devices such as the chip 014 in the mobile phone 01 generate considerable heat. To ensure the working performance of the chip 014, current mobile phones 01 typically use materials with high thermal conductivity, such as graphene, to conduct the heat from the chip 014 to the back panel 013 or the display screen 011, and then dissipate it to the outside through the back panel 013 or the display screen 011, thereby achieving heat dissipation for the chip 014. In practical applications, to improve the portability of the mobile phone, the size of the mobile phone is relatively small, resulting in a limited heat dissipation area for the back panel 013 or the display screen 011, thus leading to relatively low heat dissipation efficiency. Furthermore, with continuous technological advancements and evolving user demands, the performance of mobile phone 01 has significantly improved, leading to a marked increase in the power consumption and heat generation of components such as chip 014. Therefore, current heat dissipation structures are no longer sufficient to meet the ever-growing cooling requirements.

[0041] Therefore, this application provides a terminal device. The terminal device can use air cooling for heat dissipation, thus having good heat dissipation performance.

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] As shown in Figures 2 to 4, in one example provided in this application, the terminal device 10 includes a display screen 11, a mid-frame 12, and a back panel 13. The display screen 11 and the back panel 13 are disposed opposite to each other, and the mid-frame 12 is connected between the display screen 11 and the back panel 13. The mid-frame 12 and the back panel 13 form a receiving cavity 100. The receiving cavity 100 can be used to house devices such as batteries, circuit boards, and chips 101 in the terminal device 10. In addition, the terminal device 10 also includes a cover plate 14 and a lens assembly 15. The back panel 13 has an outer panel surface 130 facing away from the display screen 11. The cover plate 14 is disposed on the back panel 13 and protrudes from the outer panel surface 130, thereby achieving effective connection between the back panel 13 and the lens assembly 15. The lens assembly 15 is located within the receiving cavity 100. The cover plate 14 has a light-transmitting hole 141. The lens assembly 15 is used to capture external images through the light-transmitting hole 141, thereby realizing the shooting function of the terminal device 10. The cover plate 14 has a first outer surface 140, which forms an angle with the outer plate surface 130. In addition, the first outer surface 140 has a plurality of ventilation holes 142, and the average ratio of the cross-sectional area to the perimeter of each ventilation hole 142 is less than or equal to 0.25 mm.

[0044] Specifically, in the example provided in this application, the cover plate 14 can effectively connect and transition between the lens assembly 15 and the back plate 13, thereby ensuring the integrity and continuity of the terminal device 10. For example, in practical applications, to improve the portability of the terminal device 10, the overall thickness of the terminal device 10 is relatively small. Additionally, to achieve better shooting capabilities, the height of the lens assembly 15 in the terminal device 10 is relatively large, causing the lens assembly 15 to protrude from the outer plate surface 130, creating a rather disjointed transition between the lens assembly 15 and the back plate 13, affecting the integrity of the terminal device 10. Furthermore, the lens assembly 15 is easily damaged when subjected to external forces, reducing the safety of the terminal device 10. In the example provided in this application, the cover plate 14 connects the lens assembly 15 and the back plate 13, enabling effective connection and transition between them. Furthermore, the cover plate 14 can also provide effective protection for the lens assembly 15, thereby reducing the risk of damage to the lens assembly 15.

[0045] In addition, the first outer surface 140 of the cover plate 14 has a plurality of ventilation holes 142 for air circulation, thereby effectively improving the heat dissipation performance of the terminal device 10.

[0046] Specifically, as shown in Figure 4, in the example provided in this application, an air duct 1420 is formed inside the terminal device 10. A gas flow component 16 is provided in the air duct 1420 to facilitate airflow. The gas flow component 16 can be a fan or a piezoelectric pump, etc. Some ventilation holes 142 can serve as air inlets 142a, and others can serve as air outlets 142b. Under the action of the gas flow component 16, outside air can enter the air duct 1420 from the air inlets 142a and exit from the air outlets 142b, thereby quickly removing heat from the terminal device 10 and improving its heat dissipation performance. For example, the dashed arrow in Figure 4 shows the approximate airflow path. Under the action of the gas flow component 16, outside air can enter the air duct 1420 from the air inlets 142a, and after flowing sequentially through the gas flow component 16 and the chip 101, the air is discharged outwards from the air outlets 142b. When air flows over the surface of chip 101, it quickly carries away the heat of chip 101, thereby achieving effective heat dissipation of chip 101.

[0047] It should be noted that in other examples, the gas flow component 16 may be omitted. For example, the heat generated by the terminal device 10 can be naturally dissipated through the ventilation hole 142, which can effectively increase the heat dissipation rate and thus improve the heat dissipation performance of the terminal device 10.

[0048] Of course, in practical applications, the lens assembly 15 may specifically include a lens and a sensor. The lens may include optical lenses such as convex lenses, concave lenses, and filters, thereby enabling focusing, diffusion, or filtering of external images. The sensor is used to convert light signals into electrical or digital signals for processing by the chip 101. In various practical applications, the specific structure and type of the lens assembly 15 can be reasonably set according to currently common practices. In the example provided in this application, the lens assembly 15 is connected to the cover plate 14. Therefore, in practical applications, the lens assembly 15 may also be located within the air duct 1420, thereby enabling air cooling of the sensor within the lens assembly 15. In summary, in practical applications, the specific path and structure of the air duct 1420 can be reasonably set according to actual needs to meet the heat dissipation requirements of the terminal device 10, which will not be elaborated here.

[0049] In practical applications, the display screen 11 can be of various types. For example, the display screen 11 can be a liquid crystal display (LCD) or an organic light-emitting diode (OLED) screen. In specific settings, the display screen 11 can be a commonly used type, and this application does not limit it.

[0050] In addition, the middle frame 12 and the back plate 13 can also be the more commonly used structures and types.

[0051] For example, as shown in Figure 3, in one example provided in this application, the middle frame 12 may specifically include a middle plate 121 and a frame 122. The display screen 11 can be fixedly connected to the middle plate 121 by means of screws, adhesives, etc.

[0052] The back plate 13 can be fixedly connected to the middle plate 121 by means of screws, adhesives, etc.

[0053] In summary, the mid-frame 12 serves to fix and connect the display screen 11 and the back panel 13. Furthermore, the display screen 11, the bezel 122, and the back panel 13 can form a space for accommodating components such as circuit boards, chips 101, and batteries.

[0054] The back panel 13 and the middle frame 12 can be an integral structure or two independent structural components. In specific applications, the structural type of the back panel 13 and the middle frame 12 can be reasonably selected according to actual needs, which will not be elaborated here.

[0055] Furthermore, in the example provided in this application, the average ratio of the cross-sectional area to the perimeter of each ventilation hole 142 is less than or equal to 0.25 mm to prevent the intrusion of large particles (e.g., those with a diameter greater than 0.25 mm), thereby ensuring the safety and reliability of the terminal device 10. The average ratio of the cross-sectional area to the perimeter of the ventilation hole 142 being less than or equal to 0.25 mm can also be understood as the characteristic length of the ventilation hole 142 being less than or equal to 1 mm. That is, Dc = 4A / D. Here, Dc represents the characteristic length, A represents the cross-sectional area of ​​the ventilation hole 142, and D represents the perimeter of the ventilation hole 142. For example, when the cross-sectional shape of the ventilation hole 142 is circular, the characteristic length of the ventilation hole 142 is equal to its diameter. When the cross-sectional shape of the ventilation hole 142 is square, the characteristic length of the ventilation hole 142 is equal to its side length. Of course, when the cross-sectional shape of the ventilation hole 142 is elliptical, triangular, or other irregular, the characteristic length of the ventilation hole 142 can be calculated based on the specific values ​​of its cross-sectional area and perimeter, which will not be elaborated here. Alternatively, it can be understood that in the terminal device provided in this application, by reasonably limiting the characteristic length of the ventilation hole 142, the ventilation performance and the ability to block foreign objects of the ventilation hole 142 can be effectively balanced, so that the air has less flow resistance when flowing through the ventilation hole 142, and can effectively prevent large-sized foreign objects from entering the air duct 1420, thereby ensuring the safety of the terminal device 10.

[0056] The first outer surface 140 is set at an angle to the outer panel 130, which can not only effectively reduce the probability of foreign object intrusion, but also effectively improve the overall integrity of the terminal device 10 and the user experience.

[0057] Specifically, please refer to Figures 2 and 5. Figure 5 shows a schematic diagram of the back structure of the terminal device 10. In Figures 2 and 5, the angle between the first outer surface 140 and the outer panel surface 130 is approximately 90°. As shown in Figure 5, when viewing the terminal device 10 from a direction perpendicular to the outer panel surface 130 of the back panel 13, the first outer surface 140 is not visible, and therefore the ventilation holes 142 located on the first outer surface 140 are not visible. Thus, from the user's visual perspective, the terminal device 10 has a strong sense of integrity. That is, the placement of the ventilation holes 142 does not disrupt the integrity of the back of the terminal device 10.

[0058] In addition, when the terminal device 10 is not in use and the outer panel 130 of the back panel 13 is placed on a table or other position with the back panel 13 facing upwards, the first outer surface 140 is basically perpendicular to the table (or horizontal plane). Therefore, dust and other impurities from the outside are not easily able to enter the ventilation hole 142, thereby ensuring the safety of using the terminal device 10.

[0059] Alternatively, as shown in Figure 6, in actual usage scenarios, when the user is not using the terminal device 10, the display surface of the screen 11 is usually facing upwards. Alternatively, when the user places the terminal device 10 on the desktop G for use, the display surface of the screen 11 will also face upwards. When the display surface of the screen 11 faces upwards, the cover plate 14 and the ventilation holes 142 are away from the user's line of sight, therefore, they are not visually perceptible to the user, enhancing the overall unity of the terminal device 10 in the user's perception. Furthermore, the first outer surface 140 does not contact the desktop G; therefore, the desktop G will not obstruct the ventilation holes 142 and deteriorate airflow, thus ensuring the heat dissipation performance of the terminal device 10. When there are large particles of dust or other foreign objects on the desktop G, since the first outer surface 140 does not contact the desktop G, these foreign objects are unlikely to enter the ventilation holes 142, effectively ensuring the safety of using the terminal device 10.

[0060] In practical applications, the shape, number, and location of the ventilation holes 142 can vary.

[0061] For example, as shown in Figure 6, each ventilation hole 142 has a circular cross-sectional shape, and multiple ventilation holes 142 are arranged in a rectangular array.

[0062] Alternatively, as shown in Figure 7, in another example provided in this application, the cross-sectional shape of each ventilation hole 142 is rectangular, and multiple ventilation holes 142 are arranged sequentially at intervals along the width direction of the ventilation holes 142.

[0063] Alternatively, as shown in Figure 8, in another example provided in this application, each ventilation hole 142 has a long strip shape in cross-section, and multiple ventilation holes 142 are arranged at intervals along the width direction of the ventilation holes 142.

[0064] Alternatively, as shown in Figure 9, in another example provided in this application, each ventilation hole 142 has a square cross-sectional shape, and the plurality of ventilation holes 142 are arranged in a rectangular array, and the plurality of ventilation holes 142 are sequentially spaced along a first direction and a second direction. The first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to the first outer surface 140.

[0065] Alternatively, as shown in Figure 10, in another example provided in this application, each ventilation hole 142 has a square cross-sectional shape, and the multiple ventilation holes 142 are arranged in a rectangular array. Furthermore, the multiple ventilation holes 142 are arranged sequentially at intervals along the first direction and staggered along the second direction.

[0066] Alternatively, as shown in Figure 11, in another example provided in this application, the cross-sectional shape of each ventilation hole 142 is star-shaped, and the multiple ventilation holes 142 are arranged in a rectangular array.

[0067] Alternatively, as shown in Figure 12, another example provided in this application includes two different cross-sectional shapes of ventilation holes 142. Some (left side in Figure 12) ventilation holes 142 have a smaller cross-sectional area, while others (right side in Figure 12) ventilation holes 142 have a larger cross-sectional area.

[0068] It is understandable that in other examples, the cross-sectional shape of the ventilation hole 142 can also be elliptical, triangular, parallelogram, or irregular. Furthermore, in practical applications, each ventilation hole 142 can have the same cross-section, or it can include at least two ventilation holes 142 with different cross-sections. Specifically, different cross-sectional shapes of the ventilation holes 142 include: different cross-sectional shapes; different cross-sectional areas; the same cross-sectional shape but different cross-sectional areas; the same cross-sectional area but different cross-sectional shapes; or both different cross-sectional shapes and areas.

[0069] In specific settings, the number, cross-sectional shape, and location of ventilation holes 142 can be reasonably set according to actual needs, and will not be elaborated here.

[0070] In practical applications, the cover plate 14 can have various structural shapes.

[0071] For example, as shown in Figures 13 and 14, in one example provided in this application, the cover plate 14 is a rectangular concave shell structure. Specifically, the cover plate 14 includes a plate body 143 and four side walls 144.

[0072] The light-transmitting hole 141 is located in the plate 143. In specific settings, the light-transmitting hole 141 can be a through hole. Alternatively, in some examples, a protective sheet with high light transmittance, such as quartz glass or sapphire, can be placed inside the through hole. Furthermore, the number of light-transmitting holes 141 can be configured according to the specific number of lenses in the lens assembly 15. In specific settings, the number, shape, and position arrangement of the light-transmitting holes 141 can be reasonably set according to actual needs, and will not be elaborated here.

[0073] When the ventilation hole 142 is provided, the ventilation hole 142 may be located in at least one of the four side walls 144. Alternatively, it can be understood that the outer surface of at least one side wall 144 may be a first outer surface 140.

[0074] For example, as shown in Figures 13 and 14, in the example provided in this application, the outer surfaces of two opposing sidewalls 144 of the four sidewalls 144 can serve as the first outer surface 140.

[0075] It should be noted that in the examples provided in Figures 13 and 14, the included angle between the first outer surface 140 and the outer panel surface 130 is approximately 90°, and the first outer surface 140 is connected to the outer panel surface 130 of the back panel 13. Alternatively, it can be understood that the connection between the first outer surface 140 and the back panel 13 not only provides an effective connection for the back panel 13, but also provides an effective mounting position for the ventilation hole 142.

[0076] In other examples, the angle between the first outer surface 140 and the outer plate surface 130 may be less than 90°.

[0077] For example, as shown in Figure 15, in another example provided in this application, the angle between the first outer surface 140 and the outer panel 130 is approximately 45°. When the angle between the first outer surface 140 and the outer panel 130 is less than 90°, the viewing angle of the first outer surface 140 will decrease, making the first outer surface 140 appear lower visually. Therefore, the visual appearance of the ventilation hole 142 can be further reduced, which is beneficial to improving the integration of the terminal device 10. In other examples, the angle between the first outer surface 140 and the outer panel 130 can also be 60° or 30°, etc. In specific settings, the angle between the first outer surface 140 and the outer panel 130 can be reasonably set according to actual needs, which will not be elaborated here.

[0078] Furthermore, the above example is exemplified by using a planar first outer surface 140 as an example. In other examples, the first outer surface 140 may also be a convex or concave surface, etc.

[0079] For example, as shown in Figure 16, in one example provided in this application, the first outer surface 140 is a concave arc-shaped surface. When the first outer surface 140 is concave, the viewing angle of the first outer surface 140 is reduced, making the first outer surface 140 appear lower visually. Therefore, the visual appearance of the ventilation hole 142 can be further reduced, which is beneficial to improving the integration of the terminal device 10. In addition, compared with a flat or convex surface, a concave surface, due to its concave structural characteristics, can effectively reduce the probability of foreign object contact, thereby effectively reducing the probability of foreign objects intruding into the ventilation hole 142.

[0080] In specific configurations, the first outer surface 140 can be a concave arc-shaped surface, a U-shaped surface, etc. Alternatively, the first outer surface 140 can also be the inner surface of a groove structure. It can also be understood that the first outer surface 140 can include at least one of a plane, a convex surface, or a concave surface. The ventilation hole 142 can be located at any position within the plane, convex surface, or concave surface of the first outer surface 140. In practical applications, the specific shape of the first outer surface 140 and the specific location of the ventilation hole 142 can be reasonably configured according to the actual situation, which will not be elaborated here.

[0081] As shown in Figure 14, in a specific configuration, the terminal device 10 also includes an air duct for air circulation. Some ventilation holes 142 can serve as air inlets 142a, and others can serve as air outlets 142b. The air duct 1420 is located between the air inlets 142a and the air outlets 142b. Additionally, a gas flow component 16 is disposed within the air duct 1420 to allow outside air to enter the air duct 1420 through the air inlets 142a and then exit through the air outlets 142b, thereby achieving effective air circulation and improving the heat dissipation performance of the terminal device 10.

[0082] As shown in Figures 17 and 18, in another example provided in this application, the cover plate 14 further includes two partitions, namely partition 145 and partition 146. Both partitions 145 and 146 are located within the air duct 1420, with partition 145 adjacent to the side wall 144a of the cover plate 14, and partition 146 adjacent to the side wall 144b of the cover plate 14. Furthermore, partition 145 has a through-hole 1451 extending through its thickness, and partition 146 has a through-hole 1461 extending through its thickness. In practical applications, outside air can flow sequentially through the air inlet 142a, the through-hole 1451, the through-hole 1461, and the air outlet 142b.

[0083] The partitions 145 and 146 effectively reduce the probability of foreign objects intruding, thereby improving the security of the terminal device 10. Furthermore, partition 145 has a connecting hole 1451, and partition 146 has a connecting hole 1461, allowing air to circulate effectively through these holes.

[0084] Furthermore, in the example provided in this application, the vertical projection of the connecting hole 1451 on the side wall 144a (or the first outer surface 140) intersects with the air inlet 142a, and the vertical projection of the connecting hole 1461 on the side wall 144b (or the first outer surface 140) intersects with the air outlet 142b. When an external foreign object enters the air inlet 142a, the partition 145 can effectively block the foreign object, thereby preventing further intrusion and improving the security of the terminal device 10. Correspondingly, when an external foreign object enters the air outlet 142b, the partition 146 can effectively block the foreign object, thereby preventing further intrusion and improving the security of the terminal device 10.

[0085] Specifically, the vertical projection of the connecting hole 1451 on the side wall 144a intersecting with the air inlet 142a means that the vertical projection of the connecting hole 1451 on the side wall 144a does not overlap with the air inlet 142a. Similarly, the vertical projection of the connecting hole 1461 on the side wall 144b intersecting with the air outlet 142b means that the vertical projection of the connecting hole 1461 on the side wall 144b does not overlap with the air outlet 142b.

[0086] It is understandable that in other examples, the vertical projection of the connecting hole 1451 on the side wall 144a may overlap or coincide with the air inlet 142a. Similarly, the vertical projection of the connecting hole 1461 on the side wall 144b may overlap or coincide with the air outlet 142b. In specific configurations, the specific positions and layouts of the connecting holes 1451 and 1461 can be reasonably set according to actual needs, which will not be elaborated upon here.

[0087] In addition, when configuring the connecting hole 1451 and the connecting hole 1461, the structural types of the connecting hole 1451 and the connecting hole 1461 can also be varied.

[0088] For example, the average ratio of the cross-sectional area to the perimeter of the connecting hole 1451 or connecting hole 1461 is less than or equal to 0.25 mm. That is, the characteristic length of the connecting hole 1415 or connecting hole 1461 is less than or equal to 1 mm. In specific settings, the specific cross-sectional shape, position layout, and dimensions of the connecting holes 1451 and 1461 can be similarly set according to the ventilation hole 142 described above, and will not be elaborated here.

[0089] Additionally, it should be noted that the above example uses two partitions in the air duct 1420 as an example. In other examples, three or more partitions may be installed along the extension direction of the air duct 1420. In general, at least two partitions can be installed within the air duct 1420. In specific installations, the number and location of the partitions can be reasonably selected and adjusted according to actual needs.

[0090] Furthermore, the above example uses a rectangular concave shell structure for the cover plate 14 as an illustrative example. In other examples, the cover plate 14 can also be a circular, elliptical, triangular, or other irregularly shaped concave shell structure. Alternatively, it can be any shape other than a concave shell structure. In specific settings, the structural type of the cover plate 14 can be reasonably set according to the actual situation.

[0091] The cover plate 14 and the back plate 13 can be independent structural components. For example, the cover plate 14 and the back plate 13 can be manufactured separately, and then fixedly connected to each other by means of screws, welding, or bonding. Alternatively, the cover plate 14 and the back plate 13 can be an integral structure. In specific settings, the structural form between the cover plate 14 and the back plate 13 can be reasonably set according to the actual situation, which will not be elaborated here.

[0092] In specific configurations, the structure of the air duct 1420 can be varied.

[0093] For example, as shown in Figure 4, in one example provided in this application, the air duct 1420 is connected to the receiving cavity 100 in the terminal device 10.

[0094] Specifically, the cavity 100 is equipped with a gas flow component 16 and a chip 101, and the air duct 1420 is connected to the cavity 100, allowing air to flow over the surface of the chip 101 to cool it. Alternatively, it can be understood that some spaces within the cavity 100 can form the air duct 1420.

[0095] Alternatively, as shown in Figure 19, in another example provided in this application, the air duct 1420 is located between the cover plate 14 and the back plate 13, that is, the air duct 1420 is independent of the receiving cavity 100 in the terminal device 10.

[0096] In a specific configuration, devices such as the chip 101 located inside the housing cavity 100 can make thermally conductive contact with region 131 of the backplate 13 through materials such as graphene, allowing the heat generated by the chip 101 to be effectively transferred to region 131 of the backplate 13. Region 131 of the backplate 13 is located within the air duct 1420; therefore, when air flows through the air duct 1420, it can quickly carry away the heat from region 131, thereby improving the heat dissipation effect of the chip 101.

[0097] In summary, in specific configurations, the air duct 1420 and the receiving cavity 100 can be independent of each other or interconnected. The connection between the air duct 1420 and the receiving cavity 100 can be reasonably configured according to actual needs, which will not be elaborated upon here.

[0098] It should be noted that the above example uses a mobile phone as an example for illustration. In practical applications, the terminal device 10 can also be a tablet computer or other similar device. This application does not limit the specific type of the terminal device 10.

[0099] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0100] In this application, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural.

[0101] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A terminal device, characterized in that, The device includes a display screen, a mid-frame, and a back panel. The display screen and the back panel are disposed opposite to each other. The mid-frame is connected between the display screen and the back panel, and the mid-frame and the back panel form a receiving cavity. The terminal device also includes a cover plate and a lens assembly; The back panel has an outer panel surface that is opposite to the display screen, and the cover plate is disposed on the back panel and protrudes from the outer panel surface; The lens assembly is located within the receiving cavity, and the cover plate has a light-transmitting hole, through which the lens assembly is used to acquire external images; The cover plate has a first outer surface, which forms an angle with the outer plate surface. The first outer surface has a plurality of ventilation holes, and the average ratio of the cross-sectional area to the perimeter of each ventilation hole is less than or equal to 0.25 mm.

2. The terminal device according to claim 1, characterized in that, The angle between the first outer surface and the outer plate surface is less than or equal to 90°.

3. The terminal device according to claim 1 or 2, characterized in that, The first outer surface is connected to the outer plate surface.

4. The terminal device according to any one of claims 1 to 3, characterized in that, The first outer surface includes a plane and / or a concave surface.

5. The terminal device according to any one of claims 1 to 4, characterized in that, The cross-sectional shape of the ventilation hole can be any one of rectangular, star-shaped, circular, elliptical, and strip-shaped.

6. The terminal device according to any one of claims 1 to 5, characterized in that, Each of the ventilation holes has the same cross-section; or, among the plurality of ventilation holes, at least two ventilation holes have different cross-sections.

7. The terminal device according to any one of claims 1 to 6, characterized in that, The cover plate includes a sidewall, and the first outer surface is located on the outer surface of the sidewall.

8. The terminal device according to any one of claims 1 to 7, characterized in that, The terminal device has an air duct, and the plurality of ventilation holes include air inlets and air outlets, and the air duct is connected between the air inlets and air outlets; The air duct is isolated from the receiving cavity, or the air duct is connected to the receiving cavity.

9. The terminal device according to claim 8, characterized in that, The cover plate also includes at least one partition, which is located within the air duct and has a connecting hole extending through the thickness of the partition.

10. The terminal device according to claim 9, characterized in that, The ratio of the cross-sectional area to the perimeter of the connecting hole is less than or equal to 0.25 mm.

11. The terminal device according to claim 9 or 10, characterized in that, The vertical projection of the connecting hole on the first outer surface intersects with the ventilation hole.

12. The terminal device according to any one of claims 8 to 11, characterized in that, The terminal device also includes a gas flow component located within the air duct. The gas flow component allows outside air to enter the air duct through the air inlet and exit through the air outlet.

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