Mobile terminal and heat dissipation control method thereof

Abstract

The embodiment of the invention discloses a mobile terminal and a heat dissipation control method thereof, relates to the technical field of terminal equipment, and can give consideration to the heat dissipation performance and the conciseness and delicacy of the appearance of the mobile terminal. The mobile terminal comprises a shell, a display panel, a heating device, a heat dissipation device and an air duct. The shell comprises a fixed shell, a heat dissipation shell and a supporting cover plate, wherein the fixed shell and the heat dissipation shell are arranged on the non-display side of the display panel. The shell is provided with a plurality of first air inlets located in the heat dissipation shell and a plurality of air outlets located in the heat dissipation shell and / or the fixed shell. And the multiple first air inlets communicate with the multiple air outlets through the air duct. The heating device and the heat dissipation device are arranged in the air channel. The supporting cover plate is movably connected with the heat dissipation shell and / or the fixed shell and is switched between a closed state and an unfolded state. In the closed state, the supporting cover plate covers the heat dissipation shell and shields at least part of the first air inlets. In the unfolding state, the supporting cover plate supports the display panel to stand up and is moved away from at least part of the first air inlet.

Description

Technical Field

[0001] This application relates to the technical field of terminal devices, and particularly to a mobile terminal and a heat dissipation control method thereof. Background Art

[0002] With the increasing demand of consumers for mobile office and entertainment, the performance of mobile terminals such as laptops and tablet computers has been continuously improved, and the power consumption has also become higher and higher. In order to ensure the heat dissipation performance of mobile terminals, a plurality of air inlets and a plurality of air outlets need to be opened on the housing. However, considering the simplicity and delicacy of the appearance of mobile terminals, it is not possible to open a plurality of air inlets and a plurality of air outlets on the outer appearance of the housing of mobile terminals, making it impossible to meet the heat dissipation requirements of existing mobile terminals. Summary of the Invention

[0003] Embodiments of this application provide a mobile terminal and a heat dissipation control method thereof, which can take into account the problems of high heat dissipation performance, simplicity and delicacy of the appearance of the mobile terminal.

[0004] To achieve the above object, this application adopts the following technical solutions:

[0005] In a first aspect, embodiments of this 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. Among them, the housing can specifically be made of a material with good heat dissipation performance such as metal. The housing includes a fixed housing, a heat dissipation housing and a support cover plate. The fixed housing is connected to the heat dissipation housing and is disposed on the non-display side of the display panel. The display panel, the fixed housing and the heat dissipation housing enclose an installation cavity. And, a plurality of first air inlets are opened on the heat dissipation housing. A plurality of air outlets are also provided on the housing, and the plurality of air outlets can be located on the fixed housing, or on the heat dissipation housing, or can be respectively located on the fixed housing and the heat dissipation housing. The support cover plate is disposed on the side of the heat dissipation housing away from the display panel. Both the air duct and the heat dissipation device are disposed in the installation cavity of the housing, and the air duct is used to communicate the plurality of first air inlets with the air outlets. The heat generating device is disposed in the air duct. The heat dissipation device introduces external air through the plurality of first air inlets to the heat generating device in the air duct for heat exchange, and then discharges the heat-exchanged air from the plurality of air outlets. For example, the heat dissipation device can be a cooling fan. And, the support cover plate is movably connected to the heat dissipation housing or the fixed housing. Or, the support cover plate is movably connected to the heat dissipation housing and the fixed housing. The support cover plate can be switched between a closed state and an unfolded state. Among them, the closed state is that the support cover plate covers the outside of the heat dissipation housing and can block at least part of the first air inlets of the heat dissipation housing. The unfolded state is that the support cover plate supports the display panel to stand up and moves away from the blocked first air inlets. The support cover plate will support the display panel to stand up, which can facilitate the user to view the display panel.

[0006] It should be noted that when the support cover plate is switched to the closed state, the mobile terminal can be in a low-power state, and the heat generated by the heat-generating device is less. When the support cover plate is switched to the unfolded state, the mobile terminal can be in a high-power state, and the heat generated by the heat-generating device is more.

[0007] Compared with the prior art, in the mobile terminal according to the embodiment of the present application, part of the housing is modified into a heat dissipation housing and a support cover plate. The heat dissipation housing and the fixed housing are connected into an integral structure and arranged on the non-display side of the display panel to form an installation cavity. The heat-generating device and the heat dissipation device can be installed in the installation cavity, so as to realize the functions of the original housing. A plurality of first air inlets opened on the heat dissipation housing communicate with a plurality of air outlets through an air duct in the housing. The support cover plate is movably connected to any one or two of the heat dissipation housing and the fixed housing. When the support cover plate moves or rotates relative to any one or two of the heat dissipation housing and the fixed housing, the support cover plate can be switched between a closed state and an unfolded state. When the mobile terminal is in a high-power consumption state, the support cover plate can be switched to the unfolded state. At this time, the support cover plate supports the display panel to stand up and moves away from the blocked plurality of first air inlets. Thus, the heat dissipation device can introduce external air into the air duct of the housing through the plurality of first air inlets, exchange heat with the heat-generating device in the air duct, and then discharge the air through the plurality of air outlets from the air duct. The heat dissipation device can dissipate heat from the heat-generating device forcibly and efficiently, and has good heat dissipation performance for the heat-generating device. When the mobile terminal is in a low-power consumption state, the support cover plate can be switched to the closed state. At this time, the support cover plate covers the outside of the heat dissipation housing and blocks some or all of the first air inlets on the heat dissipation housing. At this time, the heat-generating device can be dissipated by natural heat conduction of the housing (the heat generated by the heat-generating device is conducted to the housing for heat dissipation), or by natural heat conduction and a low-power heat dissipation device. Therefore, when the support cover plate is in the closed state, some or all of the first air inlets are blocked, reducing the number of openings on the appearance of the mobile terminal and improving the simplicity and delicacy of the appearance of the mobile terminal. Therefore, the mobile terminal according to the embodiment of the present application can take into account the problems of high heat dissipation performance and the simplicity and delicacy of the appearance of the mobile terminal.

[0008] Moreover, in some embodiments of the present application, some or all of the above-mentioned plurality of light outlets are located at positions on the heat dissipation housing opposite to the support cover plate. Therefore, when the support cover plate is in the closed state, the support cover plate can block some or all of the air outlets (i.e., some or all of the air outlets opposite to the support cover plate). Some or all of the air outlets can be blocked, which also improves the simplicity and delicacy of the appearance of the mobile terminal.

[0009] In order to enable the controller to reduce the rotation speed of the cooling fan to dissipate heat from the heat-generating components when the mobile terminal is in a low-power state, in some embodiments of the present application, the mobile terminal further includes a heat conduction device, which can be arranged in the installation cavity and is in contact with the heat-generating components and the housing respectively. Therefore, the heat conduction device can transfer the heat generated by the heat-generating components to the housing, and the housing exchanges heat with the external air, thereby realizing natural heat dissipation of the heat-generating components. For example, when the mobile terminal is in a low-power state, the support cover can be switched to the closed state. At this time, the heat conduction device can dissipate heat from the heat-generating components, ensuring the heat dissipation performance of the mobile terminal. The heat conduction device can specifically be a heat conduction pipe.

[0010] Similarly, in some embodiments of the present application, the above-mentioned mobile terminal further includes a heat spreading device, which is arranged in the above-mentioned installation cavity and is in contact with the heat-generating components and the housing. The heat spreading device can spread and move the heat generated by the heat-generating components in the entire plane and conduct it to the housing for heat dissipation. The heat spreading device avoids local overheating and improves the heat dissipation effect on the heat-generating components. For example, when the mobile terminal is in a low-power state, the support cover can be switched to the closed state. At this time, the heat spreading device spreads the heat of various heat-generating components, ensuring that the tablet computer does not have regional overheating. The heat spreading device can specifically be a heat spreading sheet or a heat spreading plate.

[0011] Based on the above structure, in some embodiments of the present application, the above-mentioned mobile terminal further includes a driving member, which 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 unfolded state, realizing automatic opening and closing of the support cover.

[0012] For example, the driving member is a driving motor. The above-mentioned support cover and the heat dissipation housing are rotatably connected through, for example, a hinge shaft, and the support cover is fixedly connected to the hinge shaft. The output shaft of the driving motor is in transmission connection with the hinge shaft. Thus, the driving motor drives the hinge shaft to rotate, driving the support cover to open (i.e., the unfolded state) or close (i.e., the closed state).

[0013] Moreover, in some embodiments, the above-mentioned mobile terminal further includes a controller, which is electrically connected to the driving member. The controller is used to control the cooling device to turn off or reduce the operating power of the cooling device (such as reducing the rotation speed of the cooling fan) when the driving member feedbacks that the support cover is in the closed state. At this time, the heat-generating components of the mobile terminal can be in a low-power state, and the heat-generating components can be dissipated only by the above-mentioned heat conduction device and heat spreading device. Or, the above-mentioned heat conduction device, heat spreading device and cooling fan with a low rotation speed can also be used for heat dissipation. Therefore, in the embodiments of the present application, when the mobile terminal is in a low-power state, it can automatically switch to natural heat exchange (i.e., heat dissipation by the heat conduction device and heat spreading device) or low-speed air-cooled heat dissipation (i.e., heat dissipation by the cooling fan with a low rotation speed) for heat dissipation, with good heat dissipation performance, and high simplicity and delicacy of the appearance of the mobile terminal.

[0014] The controller is further configured to control the heat dissipation device to turn on or increase the operating power of the heat dissipation device (such as increasing the rotation speed of the heat dissipation fan) when the driving member feeds back that the support cover plate is in the unfolded state. At this time, the heat-generating components of the mobile terminal can be in a high-power consumption state, and the plurality of first air inlets are not blocked. The above-mentioned heat conduction device, heat equalization device, and high-speed heat dissipation fan can be used for heat dissipation. Therefore, in the embodiment of the present application, when the mobile terminal is in a high-power consumption state, it can automatically switch to a heat dissipation method combining high-speed forced air cooling and natural heat exchange, and the heat dissipation performance is better.

[0015] In some other embodiments of the present application, the above-mentioned support cover plate can also be switched manually. Therefore, in order to achieve the above functions, the above-mentioned mobile terminal further includes a detection device for detecting the state of the support cover plate. 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 plate detected by the detection device. That is, the controller is configured to control the heat dissipation device to turn off or reduce the operating power of the heat dissipation device (such as reducing the rotation speed of the heat dissipation fan) when the detection device detects that the support cover plate is in the closed state; when the detection device detects that the support cover plate is in the unfolded state, control the heat dissipation device to turn on or increase the operating power of the heat dissipation device (such as increasing the rotation speed of the heat dissipation fan).

[0016] The above describes the heat dissipation structure and the switching of the heat dissipation method in the mobile terminal. It should be noted that the distribution method of the above-mentioned plurality of 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 plate covers the outside of the first surface. The first side surface and the second side surface can be oppositely arranged. Some of the plurality of first air inlets are distributed on the first surface, and the remaining part of the plurality of first air inlets is distributed on the first side surface and the second side surface. For the case where the support cover plate covers some air outlets or does not cover the air outlets when in the closed state, when the mobile terminal is in a low-power consumption state, the support cover plate covers the outside of the first surface of the heat dissipation housing, blocks some of the first air inlets, and the other part of the first air inlets can be exposed. The low-speed heat dissipation fan can introduce the outside air into the air duct from some of the first air inlets, dissipate heat from the heat-generating components, and then discharge it through the air outlet.

[0017] For another example, the above-mentioned fixed housing includes a third side surface and a fourth side surface, and the third side surface can be disposed opposite to the fourth side surface. The above-mentioned mobile terminal further includes a plurality of second air inlets, and the plurality of second air inlets can be distributed on the third side surface and the fourth side surface, having less impact on the simplicity and delicacy of the appearance of the mobile terminal. When the mobile terminal is in a low-power state, when the mobile terminal is in a low-power state, the low-speed cooling fan can introduce the outside air into the air duct through the plurality of second air inlets on the fixed housing, dissipate heat from the heat-generating components, and then export the air through the air outlet.

[0018] Moreover, there can be various distribution manners of the above-mentioned plurality of air outlets on the housing. In some embodiments, the support cover plate only covers a partial area outside the first surface of the heat dissipation housing. The above-mentioned plurality of air outlets can be distributed on the first surface of the heat dissipation housing, and some of the air outlets are located in the area on the first surface that will not be blocked by the support cover plate.

[0019] In other embodiments, the support cover plate can cover the entire first surface outside the heat dissipation housing. Some of the plurality of air outlets are distributed on the first surface of the heat dissipation housing, and the remaining parts of the plurality of air outlets are respectively distributed on the first side surface and the second side surface of the heat dissipation housing. When the mobile terminal is in a low-power state, the heat-exchanged air can be exported through the air outlets on the first side surface and the second side surface, and the air outlet area is relatively large, which is beneficial to low-power heat dissipation. Moreover, the simplicity and delicacy of the appearance of the mobile terminal can be taken into account.

[0020] Alternatively, in some other embodiments of the present application, the above-mentioned fixed housing includes a fifth side surface, and the fifth side surface can be located between the third side surface and the fourth side surface. Some of the above-mentioned plurality of air outlets are distributed on the first surface of the heat dissipation housing, and the remaining parts of the plurality of air outlets are 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 exported through the air outlets on the fifth side surface, and the air outlet area is relatively large, which is beneficial to low-power heat dissipation. Moreover, the simplicity and delicacy of the appearance of the mobile terminal can also be taken into account.

[0021] In a second aspect, an embodiment of the present application further 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 plate. Wherein, the current state of the support cover plate can be a closed state or an unfolded state. According to the current state of the support cover plate, control the opening and closing of the heat dissipation device, or adjust the operating power of the heat dissipation device (for example, for the heat dissipation device being a cooling fan, adjust the rotation speed of the cooling fan). Therefore, the heat dissipation control method can switch different states of the support cover plate 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 effects in both high-power and low-power states. Moreover, the simplicity and delicacy of the appearance of the mobile terminal can also be taken into account. Description of the Drawings

[0022] To illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments of the present application will be described below.

[0023] Figure 1 One of the three-dimensional structure diagrams of the tablet computer according to the embodiment of the present application;

[0024] Figure 2 The structural diagram of the tablet computer with the housing removed according to the embodiment of the present application;

[0025] Figure 3 Another three-dimensional structure diagram of the tablet computer according to the embodiment of the present application;

[0026] Figure 4 One of the structural diagrams of the tablet computer with the support cover removed according to the embodiment of the present application;

[0027] Figure 5a The three-dimensional structure diagram of the tablet computer in the unfolded state according to the embodiment of the present application;

[0028] Figure 5b The three-dimensional diagram of the third tablet computer according to the embodiment of the present application;

[0029] Figure 6 Another structural diagram of the tablet computer with the support cover removed according to the embodiment of the present application;

[0030] Figure 7a The back view of the first tablet computer according to the embodiment of the present application;

[0031] Figure 7b The air outlet diagram of the first tablet computer when the support cover is in the unfolded state according to the embodiment of the present application;

[0032] Figure 8a The three-dimensional diagram of the second tablet computer according to the embodiment of the present application;

[0033] Figure 8b The air outlet diagram of the second tablet computer when the support cover is in the unfolded state according to the embodiment of the present application;

[0034] Figure 9a The structural diagram of the tablet computer with a heat conduction device according to the embodiment of the present application;

[0035] Figure 9b The structural diagram of the tablet computer with a heat equalizing device according to the embodiment of the present application;

[0036] Figure 10 The assembly diagram of the driving member, the hinge shaft and the support cover in the tablet computer according to the embodiment of the present application;

[0037] Figure 11aSide view of the housing in the tablet computer according to the embodiment of the present application;

[0038] Figure 11b is Figure 11a Enlarged view of part A in

[0039] Figure 12 Partial enlarged view of the housing with a detection device according to the embodiment of the present application;

[0040] Figure 13 Schematic structural view of the fourth tablet computer with the support cover removed according to the embodiment of the present application;

[0041] Figure 14a Schematic structural view of the fourth tablet computer in the closed state according to the embodiment of the present application;

[0042] Figure 14b Schematic structural view of the fourth tablet computer in the unfolded state according to the embodiment of the present application;

[0043] Figure 15 Schematic structural view of the fifth tablet computer according to the embodiment of the present application;

[0044] Figure 16a Schematic structural view of the fifth tablet computer in the closed state according to the embodiment of the present application;

[0045] Figure 16b Schematic structural view of the fifth tablet computer in the unfolded state according to the embodiment of the present application;

[0046] Figure 17 Schematic structural view of the sixth tablet computer with the support cover removed according to the embodiment of the present application;

[0047] Figure 18a Schematic structural view of the sixth tablet computer with the first support cover according to the embodiment of the present application;

[0048] Figure 18b Schematic structural view of the sixth tablet computer with the second support cover according to the embodiment of the present application;

[0049] Figure 19 Flow chart of the heat dissipation control method for the tablet computer according to the embodiment of the present application.

[0050] Reference numerals in the drawings:

[0051] 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 plate; 101 - First air inlet; 102 - Air outlet; 103 - Second air inlet; 4 - Hinge shaft; 200 - Display panel; 201 - Non - display surface; 300 - Main board; 400 - Electronic device; 400A - Heat - generating device; 401 - Central processing unit; 402 - Battery; 500 - Heat dissipation device; 600 - Heat conduction device; 700 - Heat spreading device; 800 - Driving part; 900 - Detection device. Detailed implementation manners

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0053] Hereinafter, terms such as "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0054] In addition, in the present application, orientation terms such as "upper", "lower", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components shown in the drawings. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarification, and they can change accordingly with the change of the orientation of the components placed in the drawings.

[0055] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can refer to the connection of mechanical structures and physical structures. It can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium. It can also be understood that components are physically in contact and electrically conductive, and it can also be understood as a form of connection between different components in a circuit structure through an entity line such as a PCB copper foil or a wire that can transmit electrical signals.

[0056] The present application provides a mobile terminal, which may include devices such as mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, notebook computers, etc. The specific form of the above-mentioned mobile terminal is not particularly limited in the embodiments of the present application. For the convenience of description below, it is assumed that the mobile terminal is a tablet personal computer as shown in Figure 1 for example.

[0057] Please refer to Figure 1 and Figure 2 , Figure 1 is a perspective view of a tablet personal computer provided in some embodiments of the present application, Figure 2 is Figure 1 a schematic structural diagram of some components in the tablet personal computer shown. As can be seen from the above, in this embodiment, the electronic device is the tablet personal computer 1000. The tablet personal computer 1000 may include a housing 100, a display panel 200, a main board 300, and a battery 402 as shown in Figure 1 and Figure 2 . The housing 100 is buckled on the non-display surface 201 side of the display panel 200 and forms an installation cavity (not shown in the figure). The main board 300 may be fixed in the installation cavity of the housing 100. Various electronic devices 400 may be provided on the main board 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 main board 300.

[0058] It can be understood that Figure 1 and Figure 2 only schematically show that the tablet personal computer 1000 further includes some other components, and the actual shape, actual size, actual position, and actual structure of these components are not limited by Figure 1 and Figure 2 . In some other examples, the tablet personal computer 1000 may further include a camera, a microphone, a receiver, etc.

[0059] Since the battery 402 and various electronic devices 400 on the main board 300 in the tablet personal computer 1000 generate more heat when operating in a high-power consumption mode, that is, both the battery 402 and various electronic devices 400 are heat-generating devices 400A, the tablet personal computer 1000 requires better heat dissipation performance. If a plurality of air inlets and a plurality of air outlets are provided on the housing 100, although the tablet personal computer 1000 can have better heat dissipation performance, it will affect the simplicity and delicacy of the appearance of the tablet personal computer 1000.

[0060] To solve this problem, the embodiments of the present application provide a tablet personal computer 1000 with an improved structure. Refer toFigure 3 , the housing 100 in the tablet computer 1000 includes a fixed housing 1, a heat dissipation housing 2, and a support cover plate 3. The fixed housing 1 and the heat dissipation housing 2 are connected and arranged (such as buckled) on one side of the non-display surface 201 of the display panel 200. And, 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 be fixedly connected by means such as welding. The housing 100 is provided with, for example, Figure 4 a plurality of first air inlets 101 as shown, and a plurality of, for example, Figure 5a and Figure 5b air outlets 102 as shown. 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, or can be located on the heat dissipation housing 2, or can also be respectively located on the fixed housing 1 and the heat dissipation housing 2. Figure 5a All the plurality of air outlets 102 as shown are located on the heat dissipation housing 2. Figure 5b The plurality of air outlets 102 as shown are respectively arranged on the heat dissipation housing 2 and the fixed housing. The support cover plate 3 is arranged on the side of the heat dissipation housing 2 away from the display panel 200.

[0061] The tablet computer 1000 further includes an air duct (not shown in the figure) and a heat dissipation device 500 as shown, for example, Figure 6 . The air duct is arranged in the installation cavity of the housing 100 and communicates the plurality of first air inlets 101 with the air outlets 102. The heat generating components 400A are all arranged in the air duct. The heat dissipation device 500 is arranged in the installation cavity and can specifically be Figure 6 a heat dissipation fan as shown. The heat dissipation device 500 can introduce external air through the plurality of first air inlets 101 to the heat generating components 400A in the air duct for heat exchange, and then discharge the heat-exchanged air from the plurality of air outlets 102. And, the support cover plate 3 is movably connected to the heat dissipation housing 2, or the support cover plate 3 is movably connected to the fixed housing 1. Or, the support cover plate 3 is movably connected to both the heat dissipation housing 2 and the fixed housing 1. The support cover plate 3 can move or rotate relative to the heat dissipation housing 2, so the support cover plate 3 can have different states. For example, the support cover plate 3 has a closed state as shown, for example, Figure 3 and an unfolded state as shown, for example, Figure 5a and Figure 5b . The closed state is that the support cover plate 3 covers the outside of the heat dissipation housing 2 and can block some or all or all of the first air inlets 101 on the heat dissipation housing 2. The unfolded state is that the support cover plate 3 supports the display panel 200 to stand up and moves away from the blocked first air inlets 101. When the support cover plate 3 moves or rotates relative to the heat dissipation housing 2, it can switch between the closed state and the unfolded state. The support cover plate 3 can support the display panel 200 to stand up, which is convenient for viewing the display panel 200.

[0062] It should be noted that when the support cover plate 3 is switched to the closed state, the above-mentioned tablet computer 1000 can be in a low-power state. When the support cover plate 3 is switched to the unfolded state, the above-mentioned tablet computer 1000 can be in a high-power state. Alternatively, the support cover plate 3 can also 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 plate 3 is switched to the unfolded state.

[0063] Compared with the prior art, in the tablet computer 1000 according to the embodiment of the present application, part of the housing 100 is modified into a heat dissipation housing 2 and a support cover plate 3. The heat dissipation housing 2 and the fixed housing 1 are connected into an integral structure and are arranged on the non-display side of the display panel 200 to form an installation cavity. Various heat-generating devices 400A, a heat dissipation device 500 and air ducts can be accommodated in the installation cavity, so as to realize the functions of the original housing 100. A plurality of first air inlets 101 opened on the heat dissipation housing 2 are communicated with a plurality of air outlets 102 through the air ducts in the housing 100. The support cover plate 3 is movably connected to any one or both of the heat dissipation housing 2 and the fixed housing 1. When the support cover plate 3 moves or rotates relative to any one or both of the heat dissipation housing 2 and the fixed housing 1, the support cover plate 3 can be switched between a closed state and an unfolded state. When the tablet computer 100 is in a high-power state, the support cover plate 3 is switched to the unfolded state. At this time, the support cover plate 3 supports the display panel 200 to stand up and moves away from the blocked plurality of first air inlets 101. Thus, the heat dissipation device 500 can introduce external air into the air ducts of the housing 100 through the plurality of first air inlets 101, exchange heat with the heat-generating device 400A in the air ducts, and then discharge the heat through the air ducts from the plurality of air outlets 102. The heat dissipation device 500 can perform forced and efficient heat dissipation on the heat-generating device 400A, and has good heat dissipation performance for the heat-generating device 400A. When the tablet computer 100 is in a low-power state, the support cover plate 3 is switched to the closed state. At this time, the support cover plate 3 covers the outside of the heat dissipation housing 2 and blocks some or all of the first air inlets 101 on the heat dissipation housing 2. At this time, for the case where the support cover plate 3 blocks all the first air inlets 101 on the heat dissipation housing 2, the tablet computer 1000 can dissipate heat from the heat-generating device 400A through natural heat exchange (the heat generated by the heat-generating device 400A is conducted to the housing 100 for heat dissipation). For the case where the support cover plate 3 blocks some of the first air inlets 101 on the heat dissipation housing 2, the tablet computer 1000 can simultaneously dissipate heat from the heat-generating device 400A through natural heat exchange and a low-power heat dissipation device 500. Therefore, when the support cover plate 3 is in the closed state, some or all of the first air inlets 101 are blocked, and there are fewer openings on the appearance of the tablet computer 1000, which improves the simplicity and delicacy of the appearance of the tablet computer 1000. Therefore, the tablet computer 1000 according to the embodiment of the present application can take into account the heat dissipation performance and the simplicity and delicacy of the appearance of the tablet computer 1000.

[0064] Moreover, in some embodiments of the present application, as Figure 7a and 7b shown, some of the above-mentioned plurality of air outlets 102 may be located at positions on the heat dissipation housing 2 opposite to the support cover plate 3. Figure 7b The hollow arrows in the figure indicate the air flow direction, and the hollow arrows in the following other drawings also represent the same meaning, which will not be repeated hereinafter. Alternatively, all of the above-mentioned air outlets 102 may be located at positions on the heat dissipation housing 2 opposite to the support cover plate 3.

[0065] Therefore, as Figure 7a shown, when the support cover plate 3 is in the closed state, the support cover plate 3 can block some of the air outlets 102 (that is, some of the air outlets 102 opposite to the support cover plate 3). The plurality of air outlets 102 may be distributed on the surface of the heat dissipation housing 2. Compared with Figure 8a and Figure 8b the scheme in which the plurality of air outlets 102 shown are only distributed on the side surface of the heat dissipation housing 2, Figure 7a in the housing 100 of the embodiment of the present application shown, while not affecting the simplicity and delicacy of the appearance of the tablet computer 1000, the distribution area of the air outlets 102 can be relatively large. Thus, the heat exchange efficiency of the tablet computer 1000 is improved.

[0066] Since the heat generating device 400A will also generate a certain amount of heat when the tablet computer 1000 is in a low power consumption state, the tablet computer 1000 needs to have a certain heat dissipation function. For the case where all of the plurality of air outlets 102 are blocked when the support cover plate 3 is in the closed state, in some embodiments of the present application, the above-mentioned tablet computer 1000 further includes a heat conduction device 600 as Figure 9a shown. The heat conduction device 600 may be disposed in the installation cavity and be in contact with the heat generating device 400A (such as the central processing unit 401) and the housing 100 respectively. The contact here may be direct contact or contact with the housing 100 or the heat generating device 400A through other heat-conductive media. The heat conduction device 600 can transfer the heat generated by the heat generating device 400A to the housing 100, and the housing 100 then exchanges heat with the external air. Thus, the heat conduction speed of the heat conduction device 600 is fast, and the natural heat dissipation efficiency of the heat generating device 400A is improved. For example, when the tablet computer 1000 is in a low power consumption state, the support cover plate 3 can be switched to the closed state. At the same time, the heat conduction device 600 can quickly conduct the heat of the heat generating device 400A to the housing 100 for heat dissipation, ensuring the heat dissipation performance of the tablet computer 1000. For example, the heat conduction device 600 is a heat conduction tube, and the heat exchange medium in the heat conduction tube can quickly transfer the heat generating device 400A to the housing 100, and the heat dissipation efficiency is relatively high.

[0067] Moreover, in some embodiments of the present application, the above-mentioned tablet computer 1000 may further include a heat spreader 700 as shown in Figure 9b . The heat spreader 700 is disposed in the above-mentioned installation cavity and is in contact with the heat generating device 400A and the housing 100. The contact here can be direct contact or contact with the housing 100 and the heat generating device 400A through other heat-conductive media. The heat spreader 700 can spread and move the heat generated by the heat generating device 400A in the entire plane, conduct the area with higher heat generation to the area with lower heat generation, and conduct it to the housing 100 for heat dissipation. The heat spreader 700 avoids local overheating and improves the heat dissipation effect on the heat generating device 400A. For example, when the tablet computer 1000 is in a low power consumption state, the support cover 3 can be switched to the closed state. At this time, the heat spreader 700 spreads various heat generating devices 400A to ensure that the tablet computer 1000 does not have regional overheating. Exemplarily, the heat spreader 700 is a heat spread sheet. Alternatively, the heat spreader 700 is a heat spread plate.

[0068] Based on the above heat dissipation structure, the heat dissipation method of the tablet computer 1000 can also be designed as an automatic switching method. That is, the tablet computer 1000 can switch different heat dissipation methods according to different states of the support cover 3.

[0069] In some embodiments of the present application, the above-mentioned support cover 3 can be in an automatic driving mode. That is, the tablet computer 1000 further includes a driving member 800 as shown in Figure 10 . The driving member 800 is in transmission connection with the support cover 3. The driving member 800 can drive the support cover 3 to switch between the closed state and the unfolded state. Thus, the automatic opening and closing of the support cover 3 is realized.

[0070] Exemplarily, as shown in Figure 10 , Figure 11a and Figure 11b , the support cover 3 is rotatably connected to the heat dissipation housing 2 through a hinge shaft 4. For example, the heat dissipation housing 2 is movably and fixedly connected to the hinge shaft 4. The support cover 3 is provided with a connecting ear (not shown in the figure), and the connecting ear is fixedly sleeved outside the hinge shaft 4. The above-mentioned driving member 800 is specifically a driving motor. The output shaft of the driving motor is in transmission connection with the hinge shaft 4, and the driving motor drives the hinge shaft 4 to rotate and drives the support cover 3 to rotate, realizing the automatic driving of the support cover 3.

[0071] Moreover, the tablet computer 1000 may further include a controller, which may specifically be a control circuit. The control circuit may be integrated in the central processing unit 401 or may be a separate control circuit board, and the present application does not limit this. The controller is electrically connected to the above-mentioned driving member 800 and controls the opening and closing of the heat dissipation device 500 or adjusts the operating power of the heat dissipation device 500 according to the state of the support cover 3 feedback by the driving member 800.

[0072] That is, when the driving member 800 feeds back that the support cover plate 3 is in the closed state (for a driving motor, the motor driving plate can provide a feedback signal), the controller controls the heat dissipation device 500 to turn off, and heat dissipation can be carried out only by natural heat dissipation methods. For example, the heat of the heat generating device 400A is transferred to the housing 100 through the heat dissipation device 500 and the heat equalizing device 700 for heat dissipation. Or, the controller controls and adjusts the operating power of the heat dissipation device 500 (such as reducing the rotation speed of the heat dissipation fan). In addition to natural heat dissipation methods such as the heat dissipation device 500 and the heat equalizing device 700, forced heat dissipation is also carried out by a heat dissipation fan with a low rotation speed. At this time, at least part of the first air inlet 101 and the air outlet 102 are not blocked by the support cover plate 3. When the driving member 800 feeds back that the support cover plate 3 is in the unfolded state, the heat dissipation device 500 is controlled to turn on, or the operating power of the heat dissipation device 500 is increased (such as increasing the rotation speed of the heat dissipation fan). At this time, all the plurality of first air inlets 101 are not blocked, and the heat generating device 400A can be simultaneously cooled by the heat conduction device 600, the heat equalizing device 700, and a heat dissipation fan with a high rotation speed, and the heat dissipation efficiency of the tablet computer 1000 is high.

[0073] In some other embodiments of the present application, the support cover plate 3 can also be manually driven. That is, the state of the support cover plate 3 is adjusted manually by the user. For this, in order to accurately obtain the state of the support cover plate 3, the tablet computer 1000 further includes, as Figure 12 shown in the detection device 900, and the detection device 900 can detect the state of the support cover plate 3.

[0074] For example, the detection device 900 can be an angle sensor and is installed on the heat dissipation housing 2 or the support cover plate 3. The detection device 900 can detect the angle of the support cover plate 3 relative to the heat dissipation housing 2. According to the angle value detected by the detection device 900, the current state of the support cover plate 3 can be judged.

[0075] Again, for example, the detection device 900 can be a distance sensor and is installed on the heat dissipation housing 2 or the support cover plate 3. The detection device 900 can detect the distance between the support cover plate 3 and the heat dissipation housing 2. According to the distance detected by the detection device 900, the current state of the support cover plate 3 can be judged.

[0076] Moreover, the above-mentioned controller is electrically connected to the detection device 900. The controller can control the opening and closing of the heat dissipation device 500 or adjust the operating power of the heat dissipation device 500 according to the state of the support cover plate 3 detected by the detection device 900. That is, when the detection device 900 detects that the support cover plate 3 is in a closed state, the controller controls the heat dissipation device 500 to close, and heat dissipation can be carried out only by natural heat dissipation methods, such as transferring the heat of the heat-generating device 400A to the housing 100 through the above-mentioned heat dissipation device 500 and heat equalizing device 700 for heat dissipation. Or, the controller controls and adjusts the operating power of the heat dissipation device 500 (such as reducing the rotation speed of the heat dissipation fan). In addition to using natural heat dissipation methods such as the heat dissipation device 500 and heat equalizing device 700 for heat dissipation, low-speed heat dissipation fans can also be used for heat dissipation. At this time, at least part of the first air inlets 101 and the air outlet 102 are not blocked by the support cover plate 3. When the detection device 900 detects that the support cover plate 3 is in an unfolded state, the controller controls the heat dissipation device 500 to open or increases the operating power of the heat dissipation device 500 (such as increasing the rotation speed of the heat dissipation fan). At this time, multiple first air inlets 101 are not blocked, and the above-mentioned heat conduction device 600, heat equalizing device 700, and high-speed heat dissipation fans can be used to dissipate heat from the heat-generating device 400A at the same time, and the heat dissipation effect on the heat-generating device 400A is good.

[0077] The above describes various heat dissipation structures, auxiliary structures, and heat dissipation method switching methods in various tablet computers 1000. There can also be various distribution methods for the air inlets and air outlets 102 of the tablet computer 1000 in the embodiments of the present application.

[0078] In some embodiments of the present application, as Figure 13 shown, the outer surface of the above-mentioned 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 arranged opposite to each other. The support cover plate 3 is covered outside the first surface 23. Part of the multiple first air inlets 101 are distributed on the first surface, and the remaining part of the multiple first air inlets 101 are distributed on the first side surface 21 and the second side surface 22. For the case where the support cover plate 3 covers part of the air outlet or does not cover the air outlet 102 when in the closed state, when the tablet computer 1000 is in a low-power state, as Figure 13 and Figure 14a shown, the support cover plate 3 is covered outside the first surface 23 of the heat dissipation housing 2, blocking part of the first air inlets 101 and leaving the other part of the first air inlets 101 exposed. The low-speed heat dissipation fan can introduce external air from part of the first air inlets 101 into the air duct to dissipate heat from the heat-generating device 400A, and then discharge it through the air outlet 102. When the tablet computer 1000 is in a high-power state, as Figure 13 and Figure 14bAs shown, the support cover plate 3 is moved away from the heat dissipation housing 2, and a plurality of first air inlets 101 are all exposed. The high-speed cooling fan can introduce the external air into the air duct from the plurality of first air inlets 101 to dissipate heat from the heat-generating device 400A. The air intake area of the tablet computer 1000 is increased, and the heat dissipation efficiency is high.

[0079] In addition, the heat dissipation efficiency of the heat-generating device 400A in the low-power state can also be improved by increasing the air intake area. In some embodiments of the present application, as Figure 15 shown, the above-mentioned tablet computer 1000 further includes a plurality of second air inlets 103, and the plurality of second air inlets 103 can be located on the fixed housing 1, and the fixed housing 1 will not be blocked by the support cover plate 3. When the support cover plate 3 is in the closed state, the plurality of second air inlets 103 can be exposed, the air intake area is increased, and the heat dissipation efficiency of the heat-generating device 400A is improved.

[0080] Moreover, in order not to affect the appearance of the tablet computer 1000, the above-mentioned fixed housing 1 includes a third side surface 11 and a fourth side surface 12, and the third side surface 11 is opposite to the fourth side surface 12. The plurality of second air inlets 103 can be distributed on the third side surface 11 and the fourth side surface 12, and the influence on the simplicity and delicacy of the appearance of the tablet computer 1000 is relatively small. Therefore, when the tablet computer 1000 is in the low-power state, as Figure 15 and Figure 16a shown, the low-speed cooling fan can introduce the external air into the air duct from the plurality of second air inlets 103 of the fixed housing 1 to dissipate heat from the heat-generating device 400A. Similarly, when the tablet computer 1000 is in the high-power state, as Figure 15 and Figure 16b shown, the high-speed cooling fan can introduce the external air into the air duct from the plurality of first air inlets 103 and the plurality of second air inlets 103 to dissipate heat from the heat-generating device 400A. The air intake area of the tablet computer 1000 is increased, and the heat dissipation efficiency of the heat-generating device 400A is improved.

[0081] The above are the distribution schemes of the plurality of first air inlets 101 and the plurality of second air inlets 103. There can also be various distribution methods of the plurality of air outlets 102 on the housing 100.

[0082] In some embodiments, as Figure 14a shown, the support cover plate 3 only covers a partial area of the first surface 23 of the heat dissipation housing 2. The plurality of air outlets 102 can be distributed on the first surface 23 of the heat dissipation housing 2, and some of the air outlets 102 are located in the area on the first surface 23 that will not be blocked by the support cover plate 3. Therefore, when the tablet computer 1000 is in the high-power state, the area of the air outlets 102 is large, and the heat dissipation effect is good.

[0083] In other embodiments, asFigure 17 As shown, some of the multiple air outlets 102 are distributed on the first surface 23 of the heat dissipation housing 2, and the remaining parts of the multiple air outlets 102 are respectively distributed on the first side surface 21 and the second side surface 22 of the heat dissipation housing 2. This distribution manner of the multiple air outlets 102 can be applicable to the support cover plate 3 covering the entire first surface 23 of the heat dissipation housing 2, or can also be applicable to the support cover plate 3 covering a partial area of the first surface 23 of the heat dissipation housing 2. For the latter, as Figure 18a shown, the multiple air outlets 102 can be distributed on the first surface 23 of the heat dissipation housing 2, and some of the air outlets 102 are located in the area on the first surface 23 that will not be blocked by the support cover plate 3. As Figure 18b shown, the multiple air outlets 102 can also be all distributed in the area on the heat dissipation housing 2 that is blocked by the support cover plate 3. This application does not limit this.

[0084] In some other embodiments of this application, as Figure 15 shown, the fixed housing 1 further includes a fifth side surface 13, and the fifth side surface 13 is located between the third side surface 11 and the fourth side surface 12. Some of the above-mentioned multiple air outlets 102 are distributed on the first surface 23 of the heat dissipation housing 2, and the remaining parts of the multiple air outlets 102 are distributed on the fifth side surface 13 of the fixed housing 1. When the tablet computer 1000 is in a low power consumption state, the air outlet area is also relatively large, which is beneficial to low power consumption heat dissipation. And, the simplicity and delicacy of the appearance of the tablet computer 1000 can also be taken into account.

[0085] Based on the structure of the above-mentioned tablet computer 1000, an embodiment of this application also provides a heat dissipation control method for the tablet computer 1000. Referring to Figure 19 , this heat dissipation control method includes:

[0086] S100: Obtain the current state of the support cover plate 3. Among them, the current state of the support cover plate 3 is a closed state or an unfolded state.

[0087] S200: According to the current state of the support cover plate 3, control the opening and closing of the heat dissipation device 500, or adjust the operating power of the heat dissipation device 500 (for example, for the heat dissipation device 500 being a heat dissipation fan, adjust the rotation speed of the heat dissipation fan).

[0088] That is, when the support cover plate 3 is in the closed state, the above-mentioned controller controls the heat dissipation device 500 to be turned off, or reduces the operating power of the heat dissipation device 500. When the support cover plate 3 is in the unfolded state, the above-mentioned controller controls the heat dissipation device 500 to be turned on, or increases the operating power of the heat dissipation device 500.

[0089] Therefore, the heat dissipation control method can switch the support cover plate 3 in the tablet computer 1000 to different states under different power consumption states, thereby switching different heat dissipation methods, ensuring that the tablet computer 1000 has good heat dissipation effects in both high-power and low-power states. Moreover, the tablet computer 1000 can also balance the simplicity and delicacy of the appearance of the tablet computer 1000.

[0090] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope 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 - 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 - 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 - 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 - 6, characterized in that, The heat dissipation housing includes a first surface, a first side surface, and a second side surface, and the support cover plate covers the first surface; some of the plurality of first air inlets are distributed on the first surface; the remaining part of the plurality of first air inlets is distributed on the first side surface and the second side surface.

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

9. The mobile terminal according to any one of claims 1 - 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 on the first surface that will not be blocked by the support cover plate; Alternatively, some of the plurality of air outlets are distributed on the first surface, and the remaining part of the plurality of air outlets is respectively distributed on the first side surface and the second side surface.

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

11. A heat dissipation control method for the mobile terminal according to any one of claims 1 - 10 above, characterized in that, Including: Obtain the current state of the support cover plate; According to the current state of the support cover plate, control the opening and closing of the heat dissipation device or adjust the operating power of the heat dissipation device.

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