Mobile terminal and heat dissipation control method therefor

Abstract

Embodiments of the present application relate to the technical field of terminal devices. Disclosed are a mobile terminal and a heat dissipation control method therefor, which can achieve both heat dissipation performance and simplicity and delicacy of the appearance of a mobile terminal. The mobile terminal comprises a housing, a display panel, a heating device, a heat dissipation apparatus, and an air duct. The housing comprises a fixed housing and a heat dissipation housing which are disposed on a non-display side of the display panel, and a supporting cover plate. The housing is provided with a plurality of first air inlets located on the heat dissipation housing, and a plurality of air outlets located in the heat dissipation housing and / or the fixed housing. The air duct communicates the plurality of first air inlets with the plurality of air outlets. The heating device and the heat dissipation apparatus are disposed in the air duct. The supporting cover plate is movably connected to the heat dissipation housing and / or the fixed housing and switches between a closed state and an open state. The closed state is that the supporting cover plate covers the outside of the heat dissipation housing and blocks at least some of the first air inlets. The open state is that the supporting cover plate supports the display panel to stand up and is moved away from the at least some of the first air inlets.

Description

Mobile terminal and heat dissipation control method thereof

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 18, 2023, with application number 202311749680.2 and application name “A mobile terminal and its heat dissipation control method”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of terminal equipment, and in particular to a mobile terminal and a heat dissipation control method thereof. Background Art

[0003] As consumers' demand for mobile office and entertainment continues to grow, the performance of mobile terminals such as laptops and tablets continues to improve, leading to increasing power consumption. To ensure the heat dissipation performance of mobile terminals, multiple air inlets and outlets need to be provided on the housing. However, given the simplicity and sophistication of mobile terminal designs, multiple air inlets and outlets cannot be provided on the housing, making it impossible to meet the heat dissipation requirements of existing mobile terminals. Summary of the Invention

[0004] The embodiments of the present application provide a mobile terminal and a heat dissipation control method thereof, which can take into account both high heat dissipation performance and simplicity and refinement of the appearance of the mobile terminal.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, embodiments of the present application provide a mobile terminal. The mobile terminal includes a housing, a display panel, a heat-generating device, a heat dissipation device, and an air duct. The housing can be made of a material with good heat dissipation properties, such as metal. The housing includes a fixed housing, a heat-dissipating housing, and a support cover. The fixed housing is connected to the heat-dissipating housing and is positioned on the non-display side of the display panel. The display panel, the fixed housing, and the heat-dissipating housing define a mounting cavity. The heat-dissipating housing is provided with a plurality of first air inlets. The housing is also provided with a plurality of air outlets, which can be located on the fixed housing, the heat-dissipating housing, or both. The support cover is positioned on a side of the heat-dissipating housing away from the display panel. The air duct and the heat-dissipating device are both positioned within the mounting cavity of the housing, and the air duct connects the plurality of first air inlets to the air outlets. The heat-generating device is positioned within the air duct. The heat-dissipating device directs external air through the plurality of first air inlets to the heat-generating device within the air duct for heat exchange, and then discharges the heat-exchanged air through the plurality of air outlets. For example, the heat-dissipating device can be a heat-dissipating fan. The support cover is movably connected to the heat-dissipating housing or the fixed housing. Alternatively, the support cover is movably connected to the heat dissipation housing and the fixed housing. The support cover is switchable between a closed state and an extended state. In the closed state, the support cover is closed over the heat dissipation housing and can block at least a portion of the first air inlet of the heat dissipation housing. In the extended state, the support cover supports the display panel upright and moves away from the blocked first air inlet. The support cover supports the display panel upright, making it easier for the user to view the display panel.

[0007] It should be noted that when the support cover is switched to the closed state, the mobile terminal can be in a low-power state, and the heat generated by the heating device is relatively small. When the support cover is switched to the unfolded state, the mobile terminal can be in a high-power state, and the heat generated by the heating device is relatively large.

[0008] Compared to the prior art, the mobile terminal of the present invention modifies part of its housing into a heat dissipation housing and a support cover. The heat dissipation housing and the fixed housing are connected as an integral structure and positioned on the non-display side of the display panel to form a mounting cavity. Heat-generating components and a heat dissipation device can be installed within this mounting cavity, thereby fulfilling the functions of the original housing. Multiple first air inlets formed in the heat dissipation housing communicate with multiple air outlets via an air duct within the housing. The support cover is movably connected to either or both of the heat dissipation housing and the fixed housing. When the support cover moves or rotates relative to either or both of the heat dissipation housing and the fixed housing, the support cover can switch between a closed state and an extended state. When the mobile terminal is in a high-power mode, the support cover can switch to an extended state. In this state, the support cover supports the display panel upright and moves away from the obstructed multiple first air inlets. Thus, the heat dissipation device can draw external air into the housing's air duct through the multiple first air inlets, exchange heat with the heat-generating components within the air duct, and then discharge through the air duct through the multiple air outlets. The heat dissipation device can forcibly and efficiently dissipate heat for the heating device, and has good heat dissipation performance for the heating device. When the mobile terminal is in a low power consumption state, the support cover can be switched to a closed state. At this time, the support cover is covered on the outside of the heat dissipation shell, and blocks part or all of the first air inlets on the heat dissipation shell. At this time, the heat dissipation of the heating device can be carried out by natural heat conduction of the shell (the heat generated by the heating device is conducted to the shell for heat dissipation), or the heat dissipation of the heating device can be carried out by natural heat conduction and a low-power heat dissipation device. Therefore, when the support cover is in a closed state, part or all of the first air inlets are blocked, which reduces the number of openings on the appearance of the mobile terminal and improves the simplicity and refinement of the appearance of the mobile terminal. Therefore, the mobile terminal of the embodiment of the present application can take into account both high heat dissipation performance and the simplicity and refinement of the appearance of the mobile terminal.

[0009] Furthermore, in some embodiments of the present application, some or all of the aforementioned multiple light outlets are located on the heat dissipation housing opposite the support cover. Therefore, when the support cover is closed, the support cover can block some or all of the air outlets (i.e., some or all of the air outlets opposite the support cover). Blocking some or all of the air outlets also enhances the simplicity and sophistication of the mobile terminal's appearance.

[0010] In order to achieve the controller reducing the speed of the cooling fan to dissipate heat to the heating device when the mobile terminal is in a low-power state, in some embodiments of the present application, the mobile terminal also includes a heat-conducting device, which can be arranged in the installation cavity and contact the heating device and the shell respectively. Therefore, the heat-conducting device can transfer the heat generated by the heating device to the shell, and the shell exchanges heat with the external air, thereby achieving natural heat dissipation of the heating device. For example, when the mobile terminal is in a low-power state, the support cover can be switched to a closed state. At this time, the heat-conducting device can dissipate heat to the heating device, ensuring the heat dissipation performance of the mobile terminal. The heat-conducting device can specifically be a heat pipe.

[0011] Similarly, in some embodiments of the present application, the mobile terminal further includes a heat spreader, which is disposed in the mounting cavity and in contact with the heating device and the housing. The heat spreader can diffuse and move the heat generated by the heating device in the entire plane, and conduct it to the housing for heat dissipation. The heat spreader avoids local overheating and improves the heat dissipation effect on the heating device. For example, when the mobile terminal is in a low power state, the support cover can be switched to a closed state. At this time, the heat spreader diffuses the various heating devices to ensure that the tablet computer does not experience regional overheating. The heat spreader can specifically be a heat spreader or a heat spreader.

[0012] Based on the above structure, in some embodiments of the present application, the mobile terminal further includes a driving member that is in transmission connection with the support cover. The driving member is used to drive the support cover to switch between the closed state and the extended state, thereby realizing automatic opening and closing of the support cover.

[0013] For example, the driving member is a drive motor. The support cover is rotatably connected to the heat dissipation housing via, for example, a hinge shaft, and the support cover is fixedly connected to the hinge shaft. The output shaft of the drive motor is in driving connection with the hinge shaft. Thus, the drive motor drives the hinge shaft to rotate, thereby driving the support cover to open (i.e., in the extended state) or close (i.e., in the closed state).

[0014] Moreover, in some embodiments, the mobile terminal further comprises a controller, which is electrically connected to the driving member. The controller is used to control the heat dissipation device to be closed, or to reduce the operating power of the heat dissipation device (such as reducing the speed of the cooling fan) when the driving member feedback support cover is in a closed state. At this time, the heating device of the mobile terminal can be in a low power consumption state, and the heating device can only adopt the above-mentioned heat conduction device and heat equalizing device for heat dissipation. Alternatively, the above-mentioned heat conduction device, heat equalizing device and low-speed cooling fan can also be used for heat dissipation. Therefore, the embodiment of the present application can automatically switch to natural heat exchange (i.e., heat conduction device and heat equalizing device for heat dissipation) or low-speed air cooling (i.e., low-speed cooling fan for heat dissipation) for heat dissipation when the mobile terminal is in a low power consumption state. The heat dissipation performance is good, and the appearance of the mobile terminal is simple and refined.

[0015] The controller is also used to control the opening of the heat dissipation device or increase the operating power of the heat dissipation device (such as increasing the speed of the cooling fan) when the driving member feedback support cover is in the unfolded state. At this time, the heating device of the mobile terminal can be in a high power consumption state, and the multiple first air inlets are not blocked. The above-mentioned heat conduction device, heat equalization device and high-speed cooling fan can be used for heat dissipation. Therefore, when the mobile terminal is in a high power consumption state, the embodiment of the present application can automatically switch to a high-speed forced air cooling method combined with natural heat exchange for heat dissipation, and has better heat dissipation performance.

[0016] In other embodiments of the present application, the above-mentioned support cover can also be switched manually. Therefore, in order to achieve the above functions, the above-mentioned mobile terminal also includes a detection device, which is used to detect the state of the support cover. For example, the detection device can be an angle sensor or a distance sensor. The controller can control the opening and closing of the heat dissipation device or adjust the operating power of the heat dissipation device according to the state of the support cover detected by the detection device. That is, the controller is used to control the heat dissipation device to close or reduce the operating power of the heat dissipation device (such as reducing the speed of the cooling fan) when the detection device detects that the support cover is in a closed state; when the detection device detects that the support cover is in an expanded state, the controller controls the heat dissipation device to open or increase the operating power of the heat dissipation device (such as increasing the speed of the cooling fan).

[0017] The above describes the switching of the heat dissipation structure and heat dissipation method in the mobile terminal. It should be noted that the distribution of the above-mentioned multiple first air inlets in the embodiment of the present application can be various. For example, the outer surface of the heat dissipation housing includes a first side surface, a second side surface and a first surface. The support cover covers the outside of the first surface. The first side surface can be arranged opposite to the second side surface. Part of the multiple first air inlets is distributed on the first surface, and the remaining part of the multiple first air inlets is distributed on the first side surface and the second side surface. For the case where the support cover covers part of the air outlet or does not cover the air outlet when it is in a closed state, when the mobile terminal is in a low power consumption state, the support cover covers the outside of the first surface of the heat dissipation housing, and blocks part of the first air inlet, and the other part of the first air inlet can be exposed. The low-speed cooling fan can introduce external air from part of the first air inlet into the air duct, dissipate heat to the heating device, and then discharge it through the air outlet.

[0018] For another example, the fixed housing includes a third side surface and a fourth side surface, and the third side surface can be disposed opposite the fourth side surface. The mobile terminal further includes multiple second air inlets, which can be distributed on the third side surface and the fourth side surface, minimizing the impact on the simplicity and sophistication of the mobile terminal's appearance. When the mobile terminal is in a low-power state, a low-speed cooling fan can direct outside air from the multiple second air inlets on the fixed housing into the air duct to dissipate heat from the heat-generating components, and then discharge the heat through the air outlet.

[0019] The plurality of air outlets may be distributed on the housing in various ways. In some embodiments, the support cover only covers a portion of the first surface of the heat dissipation housing. The plurality of air outlets may be distributed on the first surface of the heat dissipation housing, with some of the air outlets located in areas of the first surface not obstructed by the support cover.

[0020] In other embodiments, the support cover can cover the entire first surface of the heat dissipation housing. A portion of the multiple air outlets is distributed on the first surface of the heat dissipation housing, while the remaining portion of the multiple air outlets is distributed on the first and second side surfaces of the heat dissipation housing. When the mobile terminal is in a low-power mode, the heat-exchanged air can be discharged through the air outlets on the first and second side surfaces, resulting in a larger air outlet area and facilitating low-power heat dissipation. Furthermore, this allows for both simplicity and sophistication in the appearance of the mobile terminal.

[0021] Alternatively, in some other embodiments of the present application, the fixed housing includes a fifth side surface, which may be located between the third side surface and the fourth side surface. A portion of the plurality of air outlets is distributed on the first surface of the heat dissipation housing, and the remainder of the plurality of air outlets is distributed on the fifth side surface of the fixed housing. When the mobile terminal is in a low-power state, the heat-exchanged air can be discharged through the air outlet on the fifth side surface, resulting in a larger air outlet area, which is conducive to low-power heat dissipation. Furthermore, the simplicity and sophistication of the mobile terminal's appearance can also be taken into account.

[0022] On the second aspect, the embodiment of the present application also includes a heat dissipation control method for the above-mentioned mobile terminal. The heat dissipation control method includes: obtaining the current state of the support cover. The current state of the support cover can be a closed state or an unfolded state. According to the current state of the support cover, the opening and closing of the heat dissipation device is controlled, or the operating power of the heat dissipation device is adjusted (such as if the heat dissipation device is a heat dissipation fan, the speed of the heat dissipation fan is adjusted). Therefore, the heat dissipation control method can switch the different states of the support cover in the mobile terminal according to different power consumption states, thereby switching different heat dissipation methods, ensuring that the mobile terminal has good heat dissipation effect in both high power consumption and low power consumption states. In addition, the mobile terminal can also take into account the simplicity and sophistication of the appearance of the mobile terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0024] FIG1 is a schematic diagram of a three-dimensional structure of a tablet computer according to an embodiment of the present application;

[0025] FIG2 is a schematic structural diagram of a tablet computer with its housing removed according to an embodiment of the present application;

[0026] FIG3 is a second schematic diagram of the three-dimensional structure of the tablet computer according to an embodiment of the present application;

[0027] FIG4 is a structural diagram of a tablet computer with the support cover removed according to an embodiment of the present application;

[0028] FIG5 a is a schematic diagram of the three-dimensional structure of the tablet computer in an expanded state according to an embodiment of the present application;

[0029] FIG5 b is a perspective schematic diagram of a third tablet computer according to an embodiment of the present application;

[0030] FIG6 is a second structural diagram of the tablet computer after the support cover is removed according to an embodiment of the present application;

[0031] FIG7 a is a schematic diagram of the back side of the first tablet computer according to an embodiment of the present application;

[0032] FIG7 b is a schematic diagram of air outlet of the first tablet computer according to an embodiment of the present application when the support cover is in an unfolded state;

[0033] FIG8 a is a perspective schematic diagram of a second tablet computer according to an embodiment of the present application;

[0034] FIG8 b is a schematic diagram of air outlet of the second tablet computer according to an embodiment of the present application when the support cover is in an unfolded state;

[0035] FIG9 a is a schematic structural diagram of a tablet computer with a heat conduction device according to an embodiment of the present application;

[0036] FIG9 b is a schematic structural diagram of a tablet computer with a heat distribution device according to an embodiment of the present application;

[0037] FIG10 is a schematic diagram of the assembly of the driving member, the hinge shaft, and the support cover in the tablet computer according to an embodiment of the present application;

[0038] FIG11a is a side view of a housing in a tablet computer according to an embodiment of the present application;

[0039] FIG11b is an enlarged view of portion A in FIG11a;

[0040] FIG12 is a partial enlarged view of a housing with a detection device according to an embodiment of the present application;

[0041] FIG13 is a schematic structural diagram of a fourth tablet computer with the support cover removed according to an embodiment of the present application;

[0042] FIG14a is a schematic structural diagram of a fourth tablet computer in a closed state according to an embodiment of the present application;

[0043] FIG14 b is a schematic structural diagram of the fourth tablet computer according to an embodiment of the present application in an unfolded state;

[0044] FIG15 is a schematic structural diagram of a fifth tablet computer according to an embodiment of the present application;

[0045] FIG16a is a schematic structural diagram of a fifth tablet computer in a closed state according to an embodiment of the present application;

[0046] FIG16 b is a structural diagram of the fifth tablet computer in an unfolded state according to an embodiment of the present application;

[0047] FIG17 is a structural diagram of the sixth tablet computer with the support cover removed according to an embodiment of the present application;

[0048] FIG18a is a schematic structural diagram of a sixth tablet computer having the first support cover according to an embodiment of the present application;

[0049] FIG18 b is a schematic structural diagram of a sixth tablet computer having the second support cover according to an embodiment of the present application;

[0050] FIG19 is a flow chart of a method for controlling heat dissipation of a tablet computer according to an embodiment of the present application.

[0051] Figure Number:

[0052] 1000-tablet computer; 100-housing; 1-fixed housing; 11-third side; 12-fourth side; 13-fifth side; 2-heat dissipation housing; 21-first side; 22-second side; 23-first surface; 3-support cover; 101-first air inlet; 102-air outlet; 103-second air inlet; 4-hinge axis; 200-display panel; 201-non-display surface; 300-mainboard; 400-electronic device; 400A-heating device; 401-central processing unit; 402-battery; 500-heat dissipation device; 600-heat conduction device; 700-heat equalization device; 800-driving part; 900-detection device. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0054] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0055] In addition, in this application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0056] In this application, unless otherwise specified or limited, the term "connection" should be understood broadly. For example, "connection" can refer to mechanical or physical connections. It can be fixed, removable, or integrated; it can be direct or indirectly connected through an intermediary. It can also be understood as physical contact and electrical continuity between components, or as a circuit structure in which different components are connected through physical circuits such as PCB copper foil or wires that can transmit electrical signals.

[0057] The present application provides a mobile terminal, which may include a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a personal computer, a notebook computer, or the like. The embodiments of the present application do not impose any particular restrictions on the specific form of the mobile terminal. For ease of explanation, the following description uses the tablet computer shown in FIG. 1 as an example.

[0058] Please refer to Figures 1 and 2. Figure 1 is a three-dimensional view of a tablet computer provided in some embodiments of the present application, and Figure 2 is a schematic structural diagram of some components in the tablet computer shown in Figure 1. As can be seen from the above, in this embodiment, the electronic device is a tablet computer 1000. The tablet computer 1000 may include a housing 100, a display panel 200, a mainboard 300 and a battery 402 as shown in Figures 1 and 2. The housing 100 is snapped onto the side of the non-display surface 201 of the display panel 200 and forms an installation cavity (not shown in the figure). The mainboard 300 can be fixed in the installation cavity of the housing 100. Various electronic devices 400 can be arranged on the mainboard 300, such as a central processing unit 401 (i.e., a processing chip), a memory card, a sound card, a network card and various interfaces. The battery 402 is electrically connected to the mainboard 300.

[0059] It is understood that Figures 1 and 2 only schematically illustrate that the tablet computer 1000 includes other components, and the actual shape, size, position, and structure of these components are not limited by Figures 1 and 2. In other examples, the tablet computer 1000 may also include a camera, a microphone, an earpiece, etc.

[0060] Because the battery 402 and various electronic components 400 on the motherboard 300 of the tablet computer 1000 generate a lot of heat when operating in high-power mode, that is, the battery 402 and various electronic components 400 are all heat-generating devices 400A, the tablet computer 1000 requires good heat dissipation performance. Although multiple air inlets and outlets on the housing 100 would provide good heat dissipation performance, it would also affect the simplicity and sophistication of the tablet computer 1000's appearance.

[0061] In order to solve this problem, an embodiment of the present application provides a tablet computer 1000 with an improved structure. Referring to Figure 3, the housing 100 in the tablet computer 1000 includes a fixed housing 1, a heat dissipation housing 2 and a support cover 3. The fixed housing 1 and the heat dissipation housing 2 are connected and arranged (such as snapping) on ​​the side of the non-display surface 201 of the display panel 200. In addition, the display panel 200, the fixed housing 1 and the heat dissipation housing 2 can enclose the above-mentioned installation cavity. The fixed housing 1 and the heat dissipation housing 2 can specifically be an integral structure or fixedly connected by methods such as welding. The housing 100 is provided with a plurality of first air inlets 101 as shown in Figure 4 and a plurality of air outlets 102 as shown in Figures 5a and 5b. The plurality of first air inlets 101 are located on the heat dissipation housing 2. The plurality of air outlets 102 can be located on the fixed housing 1, on the heat dissipation housing 2, or on the fixed housing 1 and the heat dissipation housing 2 respectively. The plurality of air outlets 102 shown in Figure 5a are all located on the heat dissipation housing 2. The plurality of air outlets 102 shown in Figure 5b are respectively arranged on the heat dissipation housing 2 and the fixed housing. The support cover 3 is disposed on a side of the heat dissipation housing 2 away from the display panel 200 .

[0062] The tablet computer 1000 also includes an air duct (not shown in the figure) and a heat dissipation device 500 as shown in Figure 6. The air duct is arranged in the installation cavity of the shell 100 and connects the multiple first air inlets 101 with the air outlets 102. The heating devices 400A are all arranged in the air duct. The heat dissipation device 500 is arranged in the installation cavity, and can specifically be a heat dissipation fan as shown in Figure 6. The heat dissipation device 500 can introduce external air through the multiple first air inlets 101 into the heating devices 400A in the air duct for heat exchange, and then output the heat-exchanged air from the multiple air outlets 102. In addition, the support cover 3 is movably connected to the heat dissipation shell 2, or the support cover 3 is movably connected to the fixed shell 1. Alternatively, the support cover 3 is movably connected to both the heat dissipation shell 2 and the fixed shell 1. The support cover 3 can move or rotate relative to the heat dissipation shell 2, so the support cover 3 can have different states, such as the support cover 3 has a closed state as shown in Figure 3 and an unfolded state as shown in Figures 5a and 5b. In the closed state, the support cover 3 covers the heat dissipation housing 2 and can block part, all, or all of the first air inlet 101 on the heat dissipation housing 2. In the extended state, the support cover 3 supports the display panel 200 and moves it away from the blocked first air inlet 101. The support cover 3 can switch between the closed and extended states by moving or rotating relative to the heat dissipation housing 2. The support cover 3 supports the display panel 200 and makes it easier to view the display panel 200.

[0063] It should be noted that when the support cover 3 is switched to the closed state, the tablet computer 1000 can be in a low-power state. When the support cover 3 is switched to the extended state, the tablet computer 1000 can be in a high-power state. Alternatively, the support cover 3 can be switched to the closed state when the tablet computer 1000 is in a low-power state. When the tablet computer 1000 is in a high-power state, the support cover 3 can be switched to the extended state.

[0064] Compared to the prior art, the tablet computer 1000 of the present embodiment modifies part of the housing 100 into a heat dissipation housing 2 and a support cover 3. The heat dissipation housing 2 and the fixed housing 1 are connected as an integral structure and positioned on the non-display side of the display panel 200 to form a mounting cavity. Various heating components 400A, heat dissipation devices 500, and air ducts can be accommodated within the mounting cavity, thereby fulfilling the functions of the original housing 100. Multiple first air inlets 101 defined in the heat dissipation housing 2 communicate with multiple air outlets 102 via air ducts within the housing 100. The support cover 3 is movably connected to either or both of the heat dissipation housing 2 and the fixed housing 1. When the support cover 3 is moved or rotated relative to either or both of the heat dissipation housing 2 and the fixed housing 1, it can switch between a closed state and an extended state. When the tablet computer 100 is in a high power consumption state, the support cover 3 switches to the extended state. At this point, the support cover 3 supports the display panel 200 upright and moves away from the obstructed first air inlets 101. Thus, the heat dissipation device 500 can allow external air to enter the air duct of the shell 100 through multiple first air inlets 101, exchange heat with the heating device 400A in the air duct, and then discharge it from the multiple air outlets 102 through the air duct. The heat dissipation device 500 can forcibly and efficiently dissipate heat from the heating device 400A, and has good heat dissipation performance for the heating device 400A. When the tablet computer 100 is in a low power consumption state, the support cover 3 switches to a closed state. At this time, the support cover 3 covers the outside of the heat dissipation shell 2 and blocks part or all of the first air inlets 101 on the heat dissipation shell 2. At this time, in the case where the support cover 3 blocks all the first air inlets 101 on the heat dissipation shell 2, the tablet computer 1000 can dissipate heat from the heating device 400A through natural heat exchange (the heat generated by the heating device 400A is conducted to the shell 100 for heat dissipation). If the support cover 3 blocks part of the first air inlet 101 on the heat dissipation housing 2, the tablet computer 1000 can dissipate heat from the heating element 400A simultaneously through natural heat exchange and the low-power heat dissipation device 500. Therefore, when the support cover 3 is closed, part or all of the first air inlet 101 is blocked, and the tablet computer 1000 has fewer openings, which improves the simplicity and sophistication of the tablet computer 1000's appearance. Therefore, the tablet computer 1000 of this embodiment of the present application can achieve both heat dissipation performance and a simple and sophisticated appearance.

[0065] Furthermore, in some embodiments of the present application, as shown in Figures 7a and 7b , some of the aforementioned multiple air outlets 102 may be located on the heat dissipation housing 2 opposite the support cover 3. The hollow arrows in Figure 7b indicate the direction of air flow, and the hollow arrows in the other figures below also represent the same meaning, which will not be repeated below. Alternatively, all of the aforementioned air outlets 102 may be located on the heat dissipation housing 2 opposite the support cover 3.

[0066] Therefore, as shown in Figure 7a, when the support cover 3 is in the closed state, the support cover 3 can block a portion of the air outlet 102 (that is, the portion of the air outlet 102 opposite the support cover 3). Multiple air outlets 102 can be distributed on the surface of the heat dissipation housing 2. Compared to the solution shown in Figures 8a and 8b, in which multiple air outlets 102 are distributed only on the side of the heat dissipation housing 2, the housing 100 of the embodiment of the present application shown in Figure 7a can have a larger distribution area of ​​the air outlet 102 without affecting the simplicity and sophistication of the appearance of the tablet computer 1000. As a result, the heat exchange efficiency of the tablet computer 1000 is improved.

[0067] Since the tablet computer 1000 is in a low power state, the heating device 400A will also generate a certain amount of heat, and the tablet computer 1000 needs to have a certain heat dissipation function. For the case where multiple air outlets 102 are blocked when the support cover 3 is in a closed state, in order to ensure the heat dissipation performance of the heating device 400A, in some embodiments of the present application, the tablet computer 1000 further includes a heat conducting device 600 as shown in Figure 9a. The heat conducting device 600 can be arranged in the installation cavity and contact the heating device 400A (such as the central processing unit 401) and the housing 100 respectively. The contact here can be direct contact or contact with the housing 100 or the heating device 400A through other heat-conducting media. The heat conducting device 600 can transfer the heat generated by the heating device 400A to the housing 100, and the housing 100 then exchanges heat with the external air. As a result, the heat conduction speed of the heat conducting device 600 is fast, which improves the natural heat dissipation efficiency of the heating device 400A. For example, when the tablet computer 1000 is in a low power state, the support cover 3 can be switched to a closed state. At the same time, the heat conducting device 600 can quickly transfer the heat from the heating element 400A to the housing 100 for heat dissipation, thereby ensuring the heat dissipation performance of the tablet computer 1000. For example, the heat conducting device 600 is a heat pipe, and the heat exchange medium in the heat pipe can quickly transfer the heat from the heating element 400A to the housing 100, thereby achieving high heat dissipation efficiency.

[0068] Furthermore, in some embodiments of the present application, the tablet computer 1000 may further include a heat spreader 700 as shown in FIG9b , which is disposed in the mounting cavity and in contact with the heating device 400A and the housing 100 . The contact here may be direct contact or contact with the housing 100 and the heating device 400A through other heat-conducting media. The heat spreader 700 can diffuse and move the heat generated by the heating device 400A throughout the plane, transferring the heat from the area with higher heat generation to the area with lower heat generation, and then transferring the heat to the housing 100 for heat dissipation. The heat spreader 700 avoids local overheating and improves the heat dissipation effect of the heating device 400A. For example, when the tablet computer 1000 is in a low power consumption state, the support cover 3 can be switched to a closed state. At this time, the heat spreader 700 diffuses the heat from various heating devices 400A to ensure that the tablet computer 1000 does not experience regional overheating. For example, the heat spreader 700 is a heat spreader. Alternatively, the heat spreader 700 is a heat spreader.

[0069] Based on the above heat dissipation structure, the heat dissipation mode of the tablet computer 1000 can also be designed to be an automatic switching mode. That is, the tablet computer 1000 can switch to different heat dissipation modes according to different states of the support cover 3.

[0070] In some embodiments of the present application, the support cover 3 can be automatically driven. Specifically, the tablet computer 1000 further includes a drive member 800, as shown in FIG10 , which is in driving connection with the support cover 3. The drive member 800 can drive the support cover 3 to switch between a closed state and an extended state, thereby achieving automatic opening and closing of the support cover 3.

[0071] For example, as shown in Figures 10, 11a and 11b, the support cover 3 is rotatably connected to the heat dissipation housing 2 via the hinge shaft 4. For example, the heat dissipation housing 2 is movably fixedly connected to the hinge shaft 4. A connecting ear (not shown in the figure) is provided on the support cover 3, and the connecting ear is fixedly sleeved on the outside of the hinge shaft 4. The above-mentioned driving member 800 is specifically a driving motor. The output shaft of the driving motor is transmission-connected to the hinge shaft 4, and the driving motor drives the hinge shaft 4 to rotate, and drives the support cover 3 to rotate, thereby realizing automatic driving of the support cover 3.

[0072] Furthermore, the tablet computer 1000 may further include a controller, which may be specifically a control circuit. This control circuit may be integrated into the central processing unit 401 or may be a separate control circuit board, which is not limited in this application. The controller is electrically connected to the driver 800 and controls the opening and closing of the heat dissipation device 500 or adjusts the operating power of the heat dissipation device 500 based on the state of the support cover 3 as fed back by the driver 800.

[0073] That is, when the driving member 800 feedbacks that the support cover 3 is in a closed state (for the driving motor, the motor driving board can provide a feedback signal), the controller controls the heat dissipation device 500 to be closed, and heat dissipation can be performed only by natural heat dissipation, such as transferring the heat of the heating device 400A to the shell 100 through the above-mentioned heat dissipation device 500 and the heat equalizing device 700 for heat dissipation. Alternatively, the controller controls the adjustment of the operating power of the heat dissipation device 500 (such as reducing the speed of the cooling fan). In addition to using the heat dissipation device 500, the heat equalizing device 700 and other natural heat dissipation methods for heat dissipation, a low-speed cooling fan is also used for forced heat dissipation. At this time, at least part of the first air inlet 101 and the air outlet 102 are not blocked by the support cover 3. When the driving member 800 feedbacks that the support cover 3 is in an expanded state, the heat dissipation device 500 is controlled to be turned on, or the operating power of the heat dissipation device 500 is increased (such as increasing the speed of the cooling fan). At this time, the multiple first air inlets 101 are not blocked, and the above-mentioned heat conduction device 600, heat distribution device 700 and high-speed cooling fan can be used to dissipate heat from the heating element 400A at the same time, so that the tablet computer 1000 has high heat dissipation efficiency.

[0074] In other embodiments of the present application, the support cover 3 can also be manually driven. That is, the user manually adjusts the state of the support cover 3. To accurately detect the state of the support cover 3, the tablet computer 1000 further includes a detection device 900 as shown in Figure 12. The detection device 900 can detect the state of the support cover 3.

[0075] For example, the detection device 900 may be an angle sensor and may be mounted on the heat dissipation housing 2 or the support cover 3. The detection device 900 may detect the angle of the support cover 3 relative to the heat dissipation housing 2. Based on the angle value detected by the detection device 900, the current state of the support cover 3 may be determined.

[0076] For another example, the detection device 900 can be a distance sensor and installed on the heat dissipation housing 2 or the support cover 3. The detection device 900 can detect the distance between the support cover 3 and the heat dissipation housing 2. Based on the distance detected by the detection device 900, the current state of the support cover 3 can be determined.

[0077] In addition, the controller is electrically connected to the detection device 900. The controller can control the heat sink 500 to open and close or adjust the operating power of the heat sink 500 according to the state of the support cover 3 detected by the detection device 900. That is, when the detection device 900 detects that the support cover 3 is in a closed state, the controller controls the heat sink 500 to be closed, and can rely solely on natural heat dissipation for heat dissipation, such as transferring the heat of the heating device 400A to the housing 100 through the heat sink 500 and the heat equalizer 700 for heat dissipation. Alternatively, the controller controls the operating power of the heat sink 500 (such as reducing the speed of the cooling fan), in addition to using the heat sink 500, the heat equalizer 700 and other natural heat dissipation methods for heat dissipation, and a low-speed cooling fan can be used for heat dissipation, such as at least part of the first air inlet 101 and the air outlet 102 are not blocked by the support cover 3. When the detection device 900 detects that the support cover 3 is in an expanded state, the controller controls the heat sink 500 to be opened or increases the operating power of the heat sink 500 (such as increasing the speed of the cooling fan). At this time, the multiple first air inlets 101 are not blocked, and the above-mentioned heat conduction device 600, heat dissipation device 700 and high-speed cooling fan can be used to dissipate heat for the heating device 400A at the same time, which has a good heat dissipation effect on the heating device 400A.

[0078] The above describes various heat dissipation structures and auxiliary structures, heat dissipation switching methods, etc. in various tablet computers 1000. In the embodiment of the present application, the distribution of the air inlet and outlet 102 of the tablet computer 1000 can also be various.

[0079] In some embodiments of the present application, as shown in FIG13 , the outer surface of the heat dissipation housing 2 includes a first side surface 21, a second side surface 22, and a first surface 23. The first side surface 21 and the second side surface 22 are disposed opposite each other. The support cover 3 covers the outside of the first surface 23. A portion of the plurality of first air inlets 101 is distributed on the first surface, and the remaining portion of the plurality of first air inlets 101 is distributed on the first side surface 21 and the second side surface 22. In the case where the support cover 3 is in a closed state and covers a portion of the air outlets or does not cover the air outlets 102, when the tablet computer 1000 is in a low-power state, as shown in FIG13 and FIG14a , the support cover 3 covers the outside of the first surface 23 of the heat dissipation housing 2, blocking a portion of the first air inlets 101 while leaving another portion of the first air inlets 101 exposed. A low-speed cooling fan can direct outside air from a portion of the first air inlets 101 into the air duct, dissipating heat from the heating device 400A, and then discharging the heat through the air outlet 102. When tablet computer 1000 is in a high-power mode, as shown in Figures 13 and 14b , support cover 3 is removed from heat dissipation housing 2, exposing multiple first air inlets 101. A high-speed cooling fan draws ambient air through multiple first air inlets 101 into the air duct, dissipating heat from heating element 400A. This increases the air intake area of ​​tablet computer 1000 and improves heat dissipation efficiency.

[0080] Furthermore, the heat dissipation efficiency of the heating element 400A in low-power mode can be improved by increasing the air intake area. In some embodiments of the present application, as shown in FIG15 , the tablet computer 1000 further includes multiple second air intakes 103 . These multiple second air intakes 103 can be located on the fixed housing 1 , so that the fixed housing 1 is not blocked by the support cover 3 . When the support cover 3 is closed, the multiple second air intakes 103 are exposed, increasing the air intake area and improving the heat dissipation efficiency of the heating element 400A.

[0081] Furthermore, to avoid affecting the appearance of the tablet computer 1000, the fixed housing 1 includes a third side surface 11 and a fourth side surface 12, with the third side surface 11 and the fourth side surface 12 opposing each other. Multiple second air inlets 103 can be distributed on the third side surface 11 and the fourth side surface 12, minimizing the impact on the simplicity and sophistication of the tablet computer 1000's appearance. Therefore, when the tablet computer 1000 is in a low-power state, as shown in Figures 15 and 16a, a low-speed cooling fan can draw outside air from the multiple second air inlets 103 of the fixed housing 1 into the air duct to dissipate heat from the heat generating device 400A. Similarly, when the tablet computer 1000 is in a high-power state, as shown in Figures 15 and 16b, a high-speed cooling fan can draw outside air from the multiple first air inlets 103 and the multiple second air inlets 103 into the air duct to dissipate heat from the heat generating device 400A. The increased air inlet area of ​​the tablet computer 1000 improves the heat dissipation efficiency of the heat generating device 400A.

[0082] The above is a distribution scheme of the plurality of first air inlets 101 and the plurality of second air inlets 103. The plurality of air outlets 102 may be distributed on the housing 100 in various ways.

[0083] In some embodiments, as shown in FIG14a , the support cover 3 only covers a portion of the first surface 23 of the heat dissipation housing 2. Multiple air outlets 102 can be distributed on the first surface 23 of the heat dissipation housing 2, with some air outlets 102 located in areas of the first surface 23 that are not blocked by the support cover 3. Therefore, when the tablet computer 1000 is in a high power consumption state, the air outlets 102 have a larger area, resulting in better heat dissipation.

[0084] In other embodiments, as shown in FIG17 , part of the plurality of air outlets 102 is distributed on the first surface 23 of the heat dissipation housing 2, and the remaining parts of the plurality of air outlets 102 are respectively distributed on the first side surface 21 and the second side surface 22 of the heat dissipation housing 2. The distribution method of the plurality of air outlets 102 can be applicable to the case where the support cover 3 covers the entire first surface 23 of the heat dissipation housing 2, or it can be applicable to the case where the support cover 3 covers a partial area of ​​the first surface 23 of the heat dissipation housing 2. For the latter, as shown in FIG18a , the plurality of air outlets 102 can be distributed on the first surface 23 of the heat dissipation housing 2, and part of the air outlets 102 are located in an area on the first surface 23 that will not be blocked by the support cover 3. As shown in FIG18b , the plurality of air outlets 102 can also be distributed entirely in an area on the heat dissipation housing 2 that is blocked by the support cover 3. This application does not impose any restrictions on this.

[0085] In other embodiments of the present application, as shown in Figure 15 , the stationary housing 1 further includes a fifth side surface 13, located between the third side surface 11 and the fourth side surface 12. A portion of the plurality of air outlets 102 is distributed on the first surface 23 of the heat dissipation housing 2, while the remainder of the plurality of air outlets 102 is distributed on the fifth side surface 13 of the stationary housing 1. When the tablet computer 1000 is in a low-power mode, the air outlet area is also larger, facilitating low-power heat dissipation. Furthermore, this also maintains the simplicity and sophistication of the tablet computer 1000's appearance.

[0086] Based on the structure of the tablet computer 1000 described above, an embodiment of the present application further provides a heat dissipation control method for the tablet computer 1000. Referring to FIG. 19 , the heat dissipation control method includes:

[0087] S100: Obtaining the current state of the support cover 3. The current state of the support cover 3 is a closed state or an unfolded state.

[0088] S200: Controlling the opening and closing of the heat dissipation device 500 or adjusting the operating power of the heat dissipation device 500 (eg, if the heat dissipation device 500 is a heat dissipation fan, adjusting the speed of the heat dissipation fan) according to the current state of the support cover 3.

[0089] That is, when the support cover 3 is in the closed state, the controller controls the heat dissipation device 500 to be turned off or to reduce the operating power of the heat dissipation device 500. When the support cover 3 is in the unfolded state, the controller controls the heat dissipation device 500 to be turned on or to increase the operating power of the heat dissipation device 500.

[0090] Therefore, this heat dissipation control method can switch the support cover 3 of the tablet computer 1000 to different states according to different power consumption states, thereby switching different heat dissipation methods, ensuring that the tablet computer 1000 has a good heat dissipation effect in both high and low power consumption states. In addition, the tablet computer 1000 can also take into account the simplicity and exquisiteness of the tablet computer 1000's appearance.

[0091] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A mobile terminal, characterized in that: include: Display panel, heating device and heat dissipation device; A housing, the housing comprising a fixed housing, a heat dissipation housing and a support cover plate, the fixed housing being connected to the heat dissipation housing and being arranged on the non-display side of the display panel to enclose a mounting cavity; a plurality of first air inlets are provided on the heat dissipation housing, a plurality of air outlets are provided on the fixed housing and / or the heat dissipation housing; the support cover plate is arranged on a side of the heat dissipation housing away from the display panel; an air duct, wherein the air duct and the heat dissipation device are arranged in the installation cavity, and the air duct connects the plurality of first air inlets with the air outlets; the heating device is arranged in the air duct; the heat dissipation device is used to introduce external air through the plurality of first air inlets to the heating device in the air duct for heat exchange, and then guide the heat-exchanged air out of the plurality of air outlets; The support cover is movably connected to the heat dissipation shell and / or the fixed shell; the support cover can be switched between a closed state and an extended state; the closed state is that the support cover covers the outside of the heat dissipation shell and blocks at least part of the first air inlet; the extended state is that the support cover supports the display panel to stand up and moves away from at least part of the first air inlet.

2. The mobile terminal according to claim 1, characterized in that: At least some of the multiple air outlets are located on the heat dissipation housing at a position opposite to the support cover; when the support cover is in a closed state, the support cover covers at least some of the air outlets.

3. The mobile terminal according to claim 1 or 2, characterized in that: The mobile terminal further includes: A heat conducting device is arranged in the installation cavity and is in contact with the heating element and the shell respectively.

4. The mobile terminal according to any one of claims 1 to 3, characterized in that: The mobile terminal further includes: A heat equalizing device is arranged in the installation cavity and is in contact with the heating element and the shell respectively.

5. The mobile terminal according to any one of claims 1 to 4, characterized in that: The mobile terminal further includes: A driving member, the driving member is drivingly connected to the supporting cover plate and is used to drive the supporting cover plate to switch between a closed state and an extended state; A controller is electrically connected to the driving member; the controller is used to control the heat dissipation device to be closed or reduce the operating power of the heat dissipation device when the driving member feedbacks that the support cover is in a closed state; and control the heat dissipation device to be opened or increase the operating power of the heat dissipation device when the driving member feedbacks that the support cover is in an extended state.

6. The mobile terminal according to any one of claims 1 to 4, characterized in that: The mobile terminal further includes: A detection device, the detection device is used to detect the state of the support cover plate; A controller is electrically connected to the heat dissipation device and the detection device. The controller is used to control the heat dissipation device to be turned off or reduce the operating power of the heat dissipation device when the detection device detects that the support cover is in a closed state; and to control the heat dissipation device to be turned on or increase the operating power of the heat dissipation device when the detection device detects that the support cover is in an extended state.

7. The mobile terminal according to any one of claims 1 to 6, characterized in that: The heat dissipation shell includes a first surface, a first side surface and a second side surface, and the support cover plate covers the first surface; part of the multiple first air inlets are distributed on the first surface; and the remaining part of the multiple first air inlets are distributed on the first side surface and the second side surface.

8. The mobile terminal according to any one of claims 1 to 6, characterized in that: The fixed housing includes a third side surface and a fourth side surface; and the mobile terminal further includes: A plurality of second air inlets are distributed on the third side surface and the fourth side surface of the fixed shell.

9. The mobile terminal according to any one of claims 1 to 8, characterized in that: The heat dissipation housing includes a first surface, a first side surface, and a second side surface; the support cover plate covers a partial area of ​​the first surface; the plurality of air outlets are distributed on the first surface, and some of the air outlets are distributed in an area of ​​the first surface that will not be blocked by the support cover plate; Alternatively, part of the plurality of air outlets are distributed on the first surface, and the remaining part of the plurality of air outlets are distributed on the first side surface and the second side surface, respectively.

10. The mobile terminal according to any one of claims 1 to 8, characterized in that: The heat dissipation shell includes a first surface, and the support cover plate covers the first surface; part of the multiple air outlets are distributed on the first surface; the fixed shell includes a fifth side surface, and the remaining part of the multiple air outlets are distributed on the fifth side surface.

11. A method for controlling heat dissipation of a mobile terminal according to any one of claims 1 to 10, characterized in that: include: Obtaining the current state of the support cover; According to the current state of the support cover plate, the opening and closing of the heat dissipation device is controlled or the operating power of the heat dissipation device is adjusted.

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