Photographic extension device for mobile equipment

Abstract

The utility model discloses a mobile equipment photography expansion device, which comprises a shell, first interfaces, second interfaces, a control module and a power supply module, at least one first interface and at least one second interface are arranged on the shell, the first interfaces are used for electrically connecting mobile equipment, and the second interfaces are used for electrically connecting external electronic equipment; the control module is arranged in the shell and is electrically connected with the first interface and the second interface; the power supply module is arranged in the shell, electrically connected with the control module and used for supplying power to the mobile device and the control module. By arranging the first interface and the second interface on the shell, the control module is connected with the mobile device and the external electronic device, and data transmission and interaction between the control module and the mobile device or the external electronic device can be achieved. And meanwhile, the power supply module supplies power to the control module, the mobile equipment and the external electronic equipment, so that the endurance of the mobile equipment can be prolonged, long-time shooting is guaranteed, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment, and in particular to a photographic extension device for mobile devices. Background Technology

[0002] In the current consumer electronics market, photography expansion devices for mobile devices such as mobile phones and tablets are showing a diversified development trend. Common photography expansion devices include docking stations and power banks. Docking stations can expand the number and types of interfaces of mobile devices, such as adding USB ports to mobile phones and tablets, making it convenient to connect storage devices such as USB flash drives and external hard drives for data transfer and storage. After shooting a large amount of footage, it can be quickly exported to external storage. Power banks provide power for mobile devices.

[0003] Existing photography extension devices are merely standalone extension devices with independent functions. Given the limited interfaces on mobile phones and tablets, they cannot simultaneously use functions such as power banks and docking stations during photography, resulting in poor usability. Utility Model Content

[0004] The main purpose of this invention is to provide a mobile device photography extension device, which aims to improve the ease of use of the photography extension device.

[0005] To achieve the above objectives, this utility model proposes a mobile device photography extension device, comprising:

[0006] The housing is provided with at least one first interface and at least one second interface, the first interface being used to electrically connect to a mobile device and the second interface being used to electrically connect to an external electronic device;

[0007] The control module is located inside the housing and is electrically connected to the first interface and the second interface;

[0008] A power supply module, located inside the housing, is electrically connected to the control module and is used to supply power to the mobile device and the control module.

[0009] In some embodiments, the housing includes a first surface and a second surface disposed opposite to each other, and a peripheral wall surrounding the periphery of the first surface and the second surface;

[0010] The first surface is provided with a connection structure, which is used to connect a mobile device.

[0011] In some embodiments, the connection structure includes:

[0012] At least one magnetic element is disposed inside the housing and is closely attached to the inner wall of the first surface.

[0013] In some embodiments, the peripheral wall includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall that are sequentially connected, wherein the first sidewall is disposed opposite to the third sidewall, and the second sidewall is disposed opposite to the fourth sidewall, wherein:

[0014] The first interface is provided on the first sidewall;

[0015] At least one of the second sidewall and the fourth sidewall is provided with the second interface.

[0016] In some embodiments, the mobile device photography extension device further includes a heat dissipation mechanism disposed inside the housing and electrically connected to the control module. The heat dissipation mechanism, the control module, and the power supply module are arranged sequentially along the horizontal direction.

[0017] The second side has an air inlet corresponding to the heat dissipation mechanism, and the peripheral wall has an air outlet corresponding to the heat dissipation mechanism.

[0018] In some embodiments, the heat dissipation mechanism includes:

[0019] A heat sink, wherein a through groove is recessed on the side of the heat sink facing away from the first surface;

[0020] At least one cooling fan is disposed in the through slot, electrically connected to the control module, and located between the air inlet and the air outlet. The air inlet end of the cooling fan is set corresponding to the air inlet, and the air outlet end of the cooling fan is set corresponding to the air outlet.

[0021] In some embodiments, the heat dissipation mechanism further includes:

[0022] Multiple heat dissipation fins are spaced apart within the through slot, and the multiple heat dissipation fins are located between the air outlet of the cooling fan and the air outlet.

[0023] In some embodiments, the heat dissipation mechanism further includes a semiconductor thermal conductive sheet disposed on the side of the heat sink facing the first surface and corresponding to the heat dissipation fins;

[0024] The semiconductor thermal conductive sheet is electrically connected to the control module.

[0025] In some embodiments, the mobile device photography extension device further includes:

[0026] A control panel is located between the power supply module and the first side wall, and is electrically connected to the control module and the first interface. The control panel is equipped with a switch, and the first side wall has a through hole for the switch to be exposed in the housing. The switch is used to control the start / stop of the heat dissipation mechanism and to control the start / stop of the power supply module.

[0027] In some embodiments, the mobile device photography extension device further includes:

[0028] A connecting cable, one end of which is electrically connected to the first interface, and the other end of which is exposed outside the housing for connecting to a mobile device.

[0029] This application, by setting up a housing and a first and second interface on the housing, and a control module and a power supply module disposed inside the housing, allows the control module to transmit and interact with the mobile device or external electronic device through the first and second interfaces on the housing, respectively. The control module is electrically connected to the two interfaces. Simultaneously, the power supply module provides power to the control module, the mobile device, and the external electronic device, extending the mobile device's battery life, ensuring extended shooting time, and greatly improving ease of use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a mobile device photography extension device according to one viewpoint in one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a mobile device photography extension device according to another perspective in one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of a mobile device photography extension device according to one viewpoint in one embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the internal structure of a mobile device photography extension device according to another perspective in one embodiment of the present invention.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0038] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0039] Reference Figures 1 to 4 In some embodiments, the present invention provides a mobile device photography extension device, comprising:

[0040] The housing 1 is provided with at least one first interface 2 and at least one second interface 3. The first interface 2 is used to electrically connect to a mobile device, and the second interface 3 is used to electrically connect to an external electronic device.

[0041] Control module 4 is located inside housing 1 and is electrically connected to first interface 2 and second interface 3;

[0042] The power supply module 5 is located inside the housing 1 and is electrically connected to the control module 4 to supply power to the mobile device and the control module 4.

[0043] In this embodiment, the core of the mobile device photography extension device of this application lies in the fact that multiple internal modules work together to extend and enhance the photography function of the mobile device.

[0044] The first interface 2 on the housing 1 is used to establish an electrical connection with a mobile device (such as a mobile phone, tablet computer, etc.), realizing the data and power transmission path between the extension device of this application and the mobile device, so that the two can exchange data, and the mobile device can obtain power through the first interface 2. The second interface 3 is used to connect external electronic devices, such as data storage devices, shooting auxiliary devices (such as microphones, fill lights, etc.), etc., to provide more functional expansion possibilities for the mobile device.

[0045] Control module 4, acting as the core hub, is electrically connected to the first interface 2 and the second interface 3, and is responsible for coordinating and managing the transmission and exchange of data between mobile devices and external electronic devices. It can process and convert data according to the connection requirements of different devices, ensuring normal data flow and interaction between them. Simultaneously, control module 4 can also monitor and manage the connection status of devices, such as identifying the type of connected external electronic device and enabling corresponding functions and protocols based on that type, ensuring compatibility and stability. For example, control module 4 can be implemented using a PCBA as its hardware carrier.

[0046] The power supply module 5 provides power support for the operation of the extended device of this application. It is preferably a storage battery and is electrically connected to the control module 4. It not only provides the power required for the operation of the control module 4 to ensure its normal operation, but also supplies power to the mobile device through the first interface 2, extending the usage time of the mobile device. It can also be used as a power bank to ensure that the mobile device has sufficient power when it is engaged in photography for a long time. In some embodiments, it can also supply power to external electronic devices connected to the second interface 3, or use a larger capacity power bank. This is only an example.

[0047] The extended device of this application, by providing the above-described structure for a mobile device photography extended device, achieves the following beneficial effects:

[0048] Firstly, the mobile device photography extension device of this application can serve as a docking station to enrich the various functions of mobile devices in photography. For example, when connected to an external storage device, photos or videos can be directly stored on the external storage device, overcoming the limitations of the mobile device's own storage capacity and meeting the storage capacity requirements for long-term photography. Connecting shooting auxiliary devices such as microphones can improve the quality of audio recording, and connecting fill lights can improve the lighting conditions of the shooting environment and enhance the shooting effect. Through this extension device, various external devices can be connected without having to find different connection methods for different devices, simplifying the operation process and improving the convenience and flexibility of mobile device photography.

[0049] Secondly, it ensures that the mobile device has a stable power supply during shooting, avoiding battery depletion due to prolonged shooting, thus guaranteeing the continuity and stability of the shooting process and improving the user experience.

[0050] Please continue to refer to Figures 1 to 3 In some embodiments, the housing 1 proposed in this utility model embodiment includes a first surface 101 and a second surface 102 disposed opposite to each other, and a peripheral wall 103 surrounding the periphery of the first surface 101 and the second surface 102.

[0051] The first side 101 is provided with a connection structure 6, which is used to connect a mobile device.

[0052] In this embodiment, the housing 1 can be formed by splicing two half-shells together. The purpose of the connection structure 6 is to provide a stable physical connection between the mobile device and the housing 1, that is, between the mobile device and the extension device of this application. This ensures that the mobile device can be firmly attached to the housing 1 during use, preventing separation or loosening of the device due to accidental shaking, collisions, etc., thereby ensuring that the entire photography extension device can continuously and effectively provide support and functional expansion for the mobile device. The rationally designed connection structure 6 makes the connection and disassembly process between the mobile device and the photography extension device simple and quick, allowing users to use it flexibly according to actual needs in different scenarios. For example, the extension device can be quickly installed and activated when mobile shooting is required, and can be easily disassembled when not needed, without placing too much operational burden on the user.

[0053] Optionally, suitable clips or slots can be designed on the connecting structure 6 to cooperate with corresponding structures on the mobile device. A secure connection is achieved by snapping or fastening the mobile device onto the connecting structure 6. This connection method provides strong mechanical stability, ensuring that the device will not easily detach during use. It is suitable for scenarios requiring high connection strength, but its installation and disassembly may require a certain level of skill and force.

[0054] Please continue to refer to Figure 3 In some embodiments, the connection structure 6 proposed in this utility model embodiment includes:

[0055] At least one magnetic element 61 is disposed inside the housing 1 and is closely attached to the inner wall of the first surface 101.

[0056] In this embodiment, the working principle of the magnetic chuck 61 is based on the properties of magnetic materials. When the mobile device approaches the first surface 101 of the housing 1, the magnetic chuck 61 generates a magnetic field, which interacts with attractive components in the mobile device (such as built-in metal sheets or components that are magnetic themselves), thereby generating an attractive force. The magnetic effect can be achieved between the metal casing of the mobile device and the magnetic chuck 61, or an additional magnetic chuck 61 can be provided and connected to the mobile device. The magnetic chuck 61 of this extension device connects the extension device and the mobile device through magnetic attraction with the magnetic chuck 61 on the mobile device.

[0057] This application achieves the following beneficial effects by setting the magnetic 61 as the connecting structure 6:

[0058] Firstly, it enables mobile devices to connect to the housing 1 quickly and easily without complicated plugging or snapping operations. Users only need to bring the mobile device close to the housing 1, and it will automatically attach to the housing under magnetic attraction, greatly improving the convenience and efficiency of the connection.

[0059] Secondly, it ensures the stability of the connection between the mobile device and the housing 1 to a certain extent, reduces the possibility of loosening due to slight shaking or movement, and ensures that the mobile device and the extension device maintain a relatively fixed position during the shooting process, which is conducive to the stable transmission of power and data.

[0060] Please continue to refer to Figure 1 and Figure 2 In some embodiments, the peripheral wall 103 proposed in this utility model embodiment includes a first sidewall 1031, a second sidewall 1032, a third sidewall 1033, and a fourth sidewall 1034 connected in sequence. The first sidewall 1031 and the third sidewall 1033 are disposed opposite to each other, and the second sidewall 1032 and the fourth sidewall 1034 are disposed opposite to each other, wherein:

[0061] The first sidewall 1031 is provided with a first interface 2;

[0062] At least one of the second sidewall 1032 and the fourth sidewall 1034 is provided with a second interface 3.

[0063] In this embodiment, the second sidewall 1032 and the fourth sidewall 1034 are respectively provided with a plurality of second interfaces 3. The plurality of second interfaces 3 include, but are not limited to, type PC interface, USB-A interface, HDMI interface, audio interface, etc. This is only an example for illustration, and those skilled in the art can design according to actual needs.

[0064] Reference Figure 3 and Figure 4 In some embodiments, the mobile device photography extension device proposed in this utility model embodiment further includes a heat dissipation mechanism 7, which is disposed inside the housing 1 and electrically connected to the control module 4. The heat dissipation mechanism 7, the control module 4 and the power supply module 5 are arranged sequentially in the horizontal direction.

[0065] The second side 102 has an air inlet 1021 corresponding to the heat dissipation mechanism 7, and the peripheral wall 103 has an air outlet 1035 corresponding to the heat dissipation mechanism 7.

[0066] In this embodiment, when the mobile device is connected to this photography extension device and is in operation, especially during photography-related operations, the mobile device will generate heat due to the continuous operation of components such as the processor and image sensor. The heat dissipation mechanism 7 actively dissipates heat from the mobile device using the principles of heat conduction, heat convection, and heat radiation.

[0067] In terms of heat conduction, the heat dissipation mechanism 7 can be closely attached to the heat-generating parts of the mobile device through specially designed heat-conducting components (such as heat-conducting silicone pads or metal heat-conducting sheets), which can quickly transfer the heat generated by the mobile device to the heat dissipation mechanism 7 itself.

[0068] Furthermore, a fan can be configured as the heat dissipation mechanism 7. Utilizing thermal convection, an airflow channel is created through the air inlet 1021 and air outlet 1035 on the housing 1. Outside cold air enters through the air inlet 1021, carries away heat as it flows through the heat dissipation mechanism 7, and the heated air is then exhausted through the air outlet 1035, forming a continuous air circulation and accelerating heat dissipation. Simultaneously, the surface of the heat dissipation mechanism 7 also radiates heat to the surrounding environment, assisting in the heat dissipation process and ensuring efficient heat transfer from the mobile device to the surrounding environment.

[0069] In some embodiments, active heat dissipation control can be achieved by setting switch 10, or by setting a temperature sensor to monitor the temperature of the mobile device in real time. When the temperature rises to a certain threshold, the heat dissipation mechanism 7 will automatically increase the fan speed (if a fan is present) or adjust the working state of other heat dissipation components to enhance the heat dissipation effect; when the temperature drops to a safe range, the heat dissipation intensity will be reduced accordingly, saving energy and reducing noise while ensuring the heat dissipation effect. This is only an illustrative example and not a limitation.

[0070] This application, by incorporating a heat dissipation mechanism 7, significantly reduces the temperature of the mobile device during photography, preventing overheating. This maintains stable performance of the mobile device, ensuring the normal operation of all its functions during photography. Whether it's image acquisition, data processing, or communication with extended devices, everything can operate efficiently in a stable temperature environment, avoiding functional abnormalities or data transmission errors caused by temperature fluctuations, thus improving the user's photography experience. Simultaneously, it reduces the damage of high temperatures to the internal electronic components of the mobile device, effectively extending its lifespan. Prolonged exposure to high temperatures accelerates battery aging and reduces chip performance; the active heat dissipation function of the heat dissipation mechanism 7 alleviates these problems, reducing the frequency of device repair and replacement, and improving the overall reliability and durability of the device.

[0071] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the heat dissipation mechanism 7 proposed in this utility model includes:

[0072] Heat sink 71, with a through groove 710 recessed on the side of heat sink 71 facing away from the first surface 101;

[0073] At least one cooling fan 72 is disposed in the through slot 710, electrically connected to the control module, and located between the air inlet 1021 and the air outlet 1035. The air inlet end of the cooling fan 72 is set to correspond to the air inlet 1021, and the air outlet end of the cooling fan 72 is set to correspond to the air outlet 1035.

[0074] In this embodiment, the heat dissipation mechanism 7 mainly operates based on the principle of heat exchange. The cooling fan 72, as the core component, generates airflow through rotation, promoting the rapid transfer and dissipation of heat. When the cooling fan 72 is started, an airflow channel is formed between the air inlet 1021 and the air outlet 1035.

[0075] Air is drawn in through the air inlet 1021 by the cooling fan 72, flows through the channel 710 area of ​​the heat sink 71, and is finally discharged from the air outlet 1035. In some embodiments, the heat sink 71 may be made of a material with good thermal conductivity (such as aluminum alloy), which can absorb heat from nearby heat sources (such as control module 4, power supply module 5, or mobile device). The heat sink 71 transfers the absorbed heat to the air flowing over its surface, raising the air temperature. The heated air is then expelled by the cooling fan 72, thereby carrying away heat and achieving the purpose of heat dissipation.

[0076] In some embodiments, the heat dissipation mechanism 7 may be equipped with a temperature sensor capable of monitoring the temperature of the heat sink 71 or key heat-generating components. When the temperature exceeds a certain threshold, the speed of the cooling fan 72 will be adjusted through the control circuit to increase the fan speed to accelerate airflow, enhance the heat dissipation effect, and ensure that the heat dissipation efficiency meets the heat dissipation requirements. When the temperature drops to a safe range, the speed of the cooling fan 72 can be appropriately reduced to achieve energy saving and noise reduction.

[0077] By setting the heat dissipation mechanism 7 of the above-mentioned mechanism, this application achieves the following beneficial effects:

[0078] Firstly, by actively cooling the mobile device, the performance stability of the mobile device's photography extension device is ensured.

[0079] Secondly, it effectively reduces the temperature of the control module 4 and the power supply module 5, preventing overheating caused by heat accumulation during prolonged operation. For example, when a mobile device is taking photos for an extended period of time, its processor, battery, and other components will generate a large amount of heat. This heat dissipation mechanism 7 can maintain the temperature of these components within a safe operating range, avoiding problems such as performance degradation, system crashes, and automatic shutdowns due to overheating.

[0080] Please continue to refer to Figure 4 In some embodiments, the heat dissipation mechanism 7 proposed in this utility model embodiment further includes:

[0081] Multiple heat dissipation fins 73 are spaced apart in the through slot 710, and the multiple heat dissipation fins 73 are located between the air outlet end of the cooling fan 72 and the air outlet 1035.

[0082] In this embodiment, the heat dissipation fins 73 are spaced apart within the through slots 710. When the airflow generated by the cooling fan 72 flows through the heat dissipation fins 73, the air can now fully contact the surfaces of the numerous heat dissipation fins 73, expanding the heat exchange area and allowing more heat to be transferred from the heat sink 71 to the airflow. Because the rate of heat exchange is proportional to the contact area, a larger contact area means that more heat can be transferred out in the same amount of time, thereby improving the heat dissipation capacity of the entire heat dissipation mechanism 7. The heat dissipation fins 73 are excellent heat conduction media, and they can quickly conduct the heat absorbed by the heat sink 71 to their own surface. The placement of the heat dissipation fins 73 between the exhaust end of the cooling fan 72 and the exhaust port 1035 allows for further processing of the hot air blown out by the cooling fan 72. When the hot air passes through the heat dissipation fins 73, some of its heat is transferred to the fins, resulting in a relatively lower air temperature at the exhaust port 1035, further optimizing the heat dissipation effect.

[0083] Please continue to refer to Figure 3 In some embodiments, the heat dissipation mechanism 7 proposed in this utility model embodiment further includes a semiconductor heat-conducting sheet 74, which is disposed on the side of the heat sink 71 facing the first surface 101 and is disposed corresponding to the heat dissipation fins 73.

[0084] Semiconductor thermal conductive sheet 74 is electrically connected to control module 4.

[0085] In this embodiment, the semiconductor heat-conducting sheet 74 can be controlled by the control module 4 to actively conduct heat to the mobile device that is close to the first surface 101, transferring the heat of the mobile device to the heat sink 71 and the heat dissipation fins 73 of the heat sink 71. For example, the semiconductor heat-conducting sheet 74 can perform directional heat transfer through the grain effect or the Porno effect, which will not be elaborated here.

[0086] By setting up the semiconductor heat-conducting plate 74, the extended device of this application can quickly and actively transfer the heat from the mobile device that is close to the first surface 101 to the heat sink 71, which facilitates the heat dissipation mechanism 7 to cool down quickly and greatly improves the heat dissipation efficiency.

[0087] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the mobile device photography extension device proposed in this utility model embodiment further includes:

[0088] The control panel 8 is located between the power supply module 5 and the first side wall 1031, and is electrically connected to the control module 4 and the first interface 2. The control panel 8 is equipped with a switch 10. The first side wall 1031 has a through hole for the switch 10 to be exposed to the housing 1. The switch 10 is used to control the start / stop of the heat dissipation mechanism 7 and to control the start / stop of the power supply module 5.

[0089] In this embodiment, the switch 10 on the control panel 8 is exposed to the housing 1 through the through hole in the first side wall 1031, allowing the user to operate it quickly. It can be divided into a heat dissipation switch 10 and a power supply switch 10, which are used to control the start or stop of the heat dissipation mechanism 7 and the power supply module 5, respectively. For example, before starting mobile device photography, the power supply module 5 can be turned on in advance to supply power to the device, and the heat dissipation mechanism 7 can be started to prevent the device from overheating; after shooting, the power supply module 5 can be turned off immediately to save energy, and the heat dissipation mechanism 7 can be stopped to avoid unnecessary energy consumption and noise. This is only an illustrative example.

[0090] In some embodiments, indicator lights corresponding to the first interface 2 and the second interface 3 can also be set, and the corresponding indicator lights will light up when the first interface 2 and the second interface 3 are connected to a mobile device and an external electronic device.

[0091] Please continue to refer to Figures 1 to 4 In some embodiments, the mobile device photography extension device further includes:

[0092] Connecting cable 9, one end of which is electrically connected to the first interface 2, and the other end is exposed outside the housing 1 for connecting to the mobile device.

[0093] In this embodiment, the first interface 2 can be integrated into the control panel 8. One end of the connecting cable 9 is directly connected to the first interface 2, and the other end can be a Type-C connector, USB-A connector, etc., which will not be described in detail here.

[0094] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A mobile device photography extension device, characterized in that, include: The housing is provided with at least one first interface and at least one second interface, the first interface being used to electrically connect to a mobile device and the second interface being used to electrically connect to an external electronic device; The control module is located inside the housing and is electrically connected to the first interface and the second interface; A power supply module, located inside the housing, is electrically connected to the control module and is used to supply power to the mobile device and the control module.

2. The mobile device photography extension device according to claim 1, characterized in that, The housing includes a first surface and a second surface disposed opposite to each other, and a peripheral wall surrounding the first surface and the second surface. The first surface is provided with a connection structure, which is used to connect a mobile device.

3. The mobile device photography extension device according to claim 2, characterized in that, The connection structure includes: At least one magnetic element is disposed inside the housing and is closely attached to the inner wall of the first surface.

4. The mobile device photography extension device according to claim 2, characterized in that, The peripheral wall includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall that are connected sequentially. The first sidewall and the third sidewall are disposed opposite to each other, and the second sidewall and the fourth sidewall are disposed opposite to each other, wherein: The first interface is provided on the first sidewall; At least one of the second sidewall and the fourth sidewall is provided with the second interface.

5. The mobile device photography extension device according to claim 4, characterized in that, The mobile device photography extension device also includes a heat dissipation mechanism, which is disposed inside the housing and electrically connected to the control module. The heat dissipation mechanism, the control module, and the power supply module are arranged sequentially along the horizontal direction. The second side has an air inlet corresponding to the heat dissipation mechanism, and the peripheral wall has an air outlet corresponding to the heat dissipation mechanism.

6. The mobile device photography extension device according to claim 5, characterized in that, The heat dissipation mechanism includes: A heat sink, wherein a through groove is recessed on the side of the heat sink facing away from the first surface; At least one cooling fan is disposed in the through slot, electrically connected to the control module, and located between the air inlet and the air outlet. The air inlet end of the cooling fan is set corresponding to the air inlet, and the air outlet end of the cooling fan is set corresponding to the air outlet.

7. The mobile device photography extension device according to claim 6, characterized in that, The heat dissipation mechanism also includes: Multiple heat dissipation fins are spaced apart within the through slot, and the multiple heat dissipation fins are located between the air outlet of the cooling fan and the air outlet.

8. The mobile device photography extension device according to claim 7, characterized in that, The heat dissipation mechanism further includes a semiconductor thermal conductive sheet, which is disposed on the side of the heat sink facing the first surface and is arranged corresponding to the heat dissipation fins; The semiconductor thermal conductive sheet is electrically connected to the control module.

9. The mobile device photography extension device according to any one of claims 5-8, characterized in that, The mobile device photography extension device also includes: A control panel is located between the power supply module and the first side wall, and is electrically connected to the control module and the first interface. The control panel is equipped with a switch, and the first side wall has a through hole for the switch to be exposed in the housing. The switch is used to control the start / stop of the heat dissipation mechanism and to control the start / stop of the power supply module.

10. The mobile device photography extension device according to claim 9, characterized in that, The mobile device photography extension device also includes: A connecting cable, one end of which is electrically connected to the first interface, and the other end of which is exposed outside the housing for connecting to a mobile device.

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