Portable multi-band shielding device

Abstract

The application relates to the technical field of signal shielding devices, in particular to a portable multi-frequency-band shielding device which comprises a device main body, a first shielding unit and a second shielding unit. The first shielding unit is provided with a first antenna module, and the second shielding unit is provided with a second antenna module. The first antenna module is configured as an omnidirectional antenna, so that the shielding device meets the demand of shielding signals of various wireless devices; the second antenna module is configured as a directional antenna, so that the shielding device meets the demand of shielding signals of specific wireless devices; the first antenna module is installed outside the device main body, and the second antenna module is installed inside the device main body, so that the shielding effect of the shielding device on different signals is improved. In this way, the shielding function of the shielding device meets the expected requirement.

Description

Technical Field

[0001] This application relates to the field of signal shielding equipment technology, and more particularly to portable multi-band shielding equipment. Background Technology

[0002] Signal jamming devices typically send interference signals to disrupt signal transmission between wireless devices, thus achieving the effect of signal shielding. Different wireless devices operate on different frequency bands, making it difficult for a single jamming device to meet the shielding requirements of various devices, ultimately resulting in the jamming function failing to meet expectations.

[0003] It is evident that ensuring the shielding function of shielding equipment meets the expected requirements is a pressing technical problem that needs to be solved. Utility Model Content

[0004] The portable multi-band shielding device provided in this application aims to solve the technical problem of how to make the shielding function of the shielding device meet the expected requirements in the prior art.

[0005] This application provides a portable multi-band shielding device, comprising: Equipment body; The first shielding unit is provided with a first antenna module; The second shielding unit is equipped with a second antenna module; The first antenna module is configured as an omnidirectional antenna, and the second antenna module is configured as a directional antenna. The first antenna module is installed on the outside of the device body, and the second antenna module is installed inside the device body.

[0006] Optionally, the first shielding unit is further provided with a first power amplifier module, which is connected to the first antenna module; The second shielding unit is also provided with a second power amplifier module, which is connected to the second antenna module; The device body is equipped with a cooling device, which is used to cool down the first power amplifier module and the second power amplifier module.

[0007] Optionally, the number of the first antenna modules is configured to be at least two, and the number of the second antenna modules is configured to be at least two; The number of the first power amplifier modules is adapted to the number of the first antenna modules, and the number of the second power amplifier modules is adapted to the number of the second antenna modules; Among them, the signals generated by different first power amplifier modules are the same or different, the signals generated by different second power amplifier modules are the same or different, and the signals generated by the first power amplifier module are different from the signals generated by the second power amplifier module.

[0008] Optionally, the cooling device includes: A heat-conducting component is attached to one or more sides of the first power amplifier module and the second power amplifier module, and the heat-conducting component is used to accelerate the heat dissipation of the first power amplifier module and the second power amplifier module. An airflow assembly is used to accelerate the airflow velocity at the heat-conducting assembly.

[0009] Optionally, the heat-conducting component is provided with fins; During the operation of the airflow assembly, the airflow generated by the airflow assembly passes through the fins and is then dissipated to the outside of the heat-conducting assembly.

[0010] Optionally, the airflow assembly includes: A first fan assembly, the first fan assembly being used to direct airflow toward the heat-conducting assembly; A second fan assembly is used to direct airflow away from the heat-conducting component; The first fan assembly and the second fan assembly are located on opposite sides of the heat-conducting assembly.

[0011] Optionally, the main body of the device is provided with a first heat dissipation hole and a second heat dissipation hole, the first heat dissipation hole and the second heat dissipation hole being located on both sides of the main body of the device, respectively; The first fan assembly is located near the first heat dissipation hole, and the second fan assembly is located near the second heat dissipation hole.

[0012] Optionally, a power module and an energy storage module are installed inside the main body of the device, and a switching device is installed outside the main body of the device; The power module is used to provide external electrical energy to meet the power requirements of the shielding device; the energy storage module is used to store electrical energy and supply power to the various functional modules within the shielding device; and the switching device is used to switch the power consumption mode of the shielding device. When the switching device switches to the first power supply position, the shielding device is powered by the power module. When the switching device switches to the second power supply position, the shielding device is powered by the energy storage module.

[0013] Optionally, the shielding device further includes a remote control unit, which is connected to the functional units within the main body of the device via a signal transmission line, so that the remote control unit can remotely control the shielding device.

[0014] Optionally, the main body of the device is equipped with a power module, a first power amplifier module, a second power amplifier module, a cooling device, a control module, and an energy storage module. The power supply module is used to provide external power to meet the power requirements of the shielding device. The first power amplifier module is used to generate and amplify a first signal. The first antenna module is used to transmit the first signal outward. The second power amplifier module is used to generate and amplify a second signal. The second antenna module is used to transmit the second signal outward. The cooling device is used to cool the first power amplifier module and the second power amplifier module. The control module is used to control the operation of the shielding device. The energy storage module is used to store energy and supply power to the various functional modules within the shielding device. When the main body of the device is in a standing position, the power module is located above the whole formed by the first power amplifier module, the second power amplifier module and the cooling device, the energy storage module is located below the whole formed by the first power amplifier module, the second power amplifier module and the cooling device, and the control module is installed near the bottom of the cooling device.

[0015] The beneficial effects achieved by this application are as follows: The portable multi-band shielding device provided by this application, by configuring the first antenna module as an omnidirectional antenna, enables the shielding device to meet the signal shielding requirements of various wireless devices; by configuring the second antenna module as a directional antenna, enables the shielding device to meet the signal shielding requirements of specific wireless devices; and by installing the first antenna module on the outside of the device body and the second antenna module on the inside of the device body, the shielding effect of the shielding device on different signals is improved. Thus, the shielding function of the shielding device meets the expected requirements. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the shielding device in the embodiments of this application; Figure 2 This is a schematic diagram of the internal structure of the shielding device in an embodiment of this application; Figure 3 This is an exploded view of the shielding device in an embodiment of this application.

[0017] Explanation of main unit symbols: 10. Shielding device; 20. Main body of the device; 21. First heat dissipation hole; 22. Second heat dissipation hole; 30. First shielding unit; 31. First antenna module; 32. First power amplifier module; 40. Second shielding unit; 41. Second antenna module; 42. Second power amplifier module; 50. Cooling device; 51. Heat conduction component; 511. Fin; 52. Airflow component; 521. First fan assembly; 522. Second fan assembly; 60. Power supply module; 70. Energy storage module; 80. Switching device; 90. Remote control unit; 91. Control module. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Furthermore, it should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0019] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the communication within two units or the interaction between two units. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0024] Please see Figures 1 to 3 In some embodiments of this application, a portable multi-band shielding device 10 is provided, comprising: a device body 20, a first shielding unit 30, and a second shielding unit 40. The first shielding unit 30 is provided with a first antenna module 31. The second shielding unit 40 is provided with a second antenna module 41. The first antenna module 31 is configured as an omnidirectional antenna, and the second antenna module 41 is configured as a directional antenna. The first antenna module 31 is installed on the outside of the device body 20, and the second antenna module 41 is installed inside the device body 20.

[0025] By configuring the first antenna module 31 as an omnidirectional antenna, the shielding device 10 can meet the signal shielding requirements of various wireless devices. By configuring the second antenna module 41 as a directional antenna, the shielding device 10 can meet the signal shielding requirements of specific wireless devices. By installing the first antenna module 31 on the outside of the device body 20 and the second antenna module 41 on the inside of the device body 20, the shielding effect of the shielding device 10 on different signals is improved. In this way, the shielding function of the shielding device 10 meets the expected requirements.

[0026] Understandably, directional antennas concentrate energy from multiple directions into a single direction, resulting in high radiation gain in the primary direction, making them suitable for scenarios requiring precise jamming. Directional antennas use beamforming technology to adjust the phase and amplitude of elements in the antenna array, forming a directional beam. By scanning the target frequency band (e.g., 900-1800MHz), a directional antenna emits high-power electromagnetic noise at the same frequency in a specific direction, causing garbled interference to the messages received by wireless devices (such as mobile phones) in the target direction.

[0027] It is understandable that an omnidirectional antenna radiates signals uniformly in a 360-degree horizontal direction, forming all-around coverage, making it suitable for locations requiring uniform shielding. Based on the principle of a λ / 4 dipole antenna, the omnidirectional antenna achieves all-around radiation through symmetrical dipoles. Omnidirectional antennas are suitable for multi-band signal generators to synchronously generate interference waveforms, achieving 360° coverage through omnidirectional radiating elements. Dynamic frequency sweeping technology is used to cyclically suppress each frequency band, thus enabling the shielding device 10 to meet the signal shielding requirements of various wireless devices.

[0028] Understandably, by internalizing the directional antenna, damage from impacts can be avoided, as can misoperations during directional adjustment. Conversely, by externalizing the omnidirectional antenna, heat dissipation is facilitated, ground reflection gain is improved, and the influence of the internal circuitry of the shielding device 10 on the signal transmitted by the omnidirectional antenna is reduced.

[0029] In some application scenarios of this application, the main operating frequency bands of the directional antenna are configured as 860-960MHz (GSM / CDMA), 1805-1990MHz (DCS / PCS), and 3.4-3.8GHz (5G).

[0030] In some application scenarios of this application, the main operating frequency bands of the omnidirectional antenna are configured as 869-960MHz (2G), 1805-1990MHz (3G / 4G), 2.4GHz (2400-2483.5MHz), 3.5GHz, 4.9GHz, and 700MHz-6GHz.

[0031] In some embodiments of this application, the first shielding unit 30 is further provided with a first power amplifier module 32, which is connected to the first antenna module 31. The second shielding unit 40 is further provided with a second power amplifier module 42, which is connected to the second antenna module 41. A cooling device 50 is installed inside the main body 20 to cool the first power amplifier module 32 and the second power amplifier module 42.

[0032] After generating the first signal, the first power amplifier module 32 amplifies the first signal and then transmits the amplified first signal to the first antenna module 31, which then transmits the first signal outward. Since the first antenna module 31 is configured as an omnidirectional antenna, it is suitable for shielding signals from different types of wireless devices.

[0033] After generating the second signal, the second power amplifier module 42 amplifies the second signal and then transmits the amplified second signal to the second antenna module 41, which then transmits the second signal outward. Since the second antenna module 41 is configured as a directional antenna, it is suitable for shielding the signals of specific wireless devices.

[0034] In this way, the shielding function of the shielding device 10 meets the expected requirements.

[0035] Since the first power amplifier module 32 and the second power amplifier module 42 generate a large amount of heat during operation, it is necessary to cool them down during the operation of the shielding device 10 to ensure its long-term normal operation. A cooling device 50 is installed inside the main body 20 to cool the first power amplifier module 32 and the second power amplifier module 42, preventing them from overheating and ensuring the shielding device 10 can operate normally for an extended period.

[0036] In some embodiments of this application, the number of first antenna modules 31 is configured to be at least two, and the number of second antenna modules 41 is configured to be at least two. The number of first power amplifier modules 32 is adapted to the number of first antenna modules 31, and the number of second power amplifier modules 42 is adapted to the number of second antenna modules 41. Different first power amplifier modules 32 may produce the same or different signals, different second power amplifier modules 42 may produce the same or different signals, and the signals produced by the first power amplifier modules 32 and the signals produced by the second power amplifier modules 42 may be different.

[0037] By generating signals of multiple frequency bands through multiple first power amplifier modules 32 and multiple second power amplifier modules 42, the shielding device 10 can shield a wider range of signals, improve the working performance of the shielding device 10, and make the shielding device 10 more comprehensive.

[0038] In some application scenarios of this application, the number of first antenna modules 31 is configured to be 6, and the number of second antenna modules 41 is configured to be 10.

[0039] In some embodiments of this application, the cooling device 50 includes a heat-conducting component 51 and an airflow component 52. The heat-conducting component 51 is in contact with one or more sides of the first power amplifier module 32 and the second power amplifier module 42, and is used to accelerate the dissipation of heat from the first power amplifier module 32 and the second power amplifier module 42. The airflow component 52 is used to accelerate the flow rate of the airflow at the heat-conducting component 51.

[0040] During the operation of the first power amplifier module 32 and the second power amplifier module 42, the heat generated by the first power amplifier module 32 and the second power amplifier module 42 is transferred to the heat conduction component 51, thereby accelerating the heat loss of the first power amplifier module 32 and the second power amplifier module 42 and preventing heat from accumulating in the first power amplifier module 32 and the second power amplifier module 42 for a long time, thus achieving the effect of cooling the first power amplifier module 32 and the second power amplifier module 42. The airflow component 52 accelerates the airflow at the heat conduction component 51, thereby quickly carrying away the heat dissipated by the heat conduction component 51, thus preventing heat from accumulating in the shielding device 10 for a long time, thus achieving the effect of cooling the shielding device 10 as a whole.

[0041] In some embodiments of this application, the heat-conducting component 51 is provided with fins 511. During the operation of the airflow component 52, the airflow generated by the airflow component 52 passes through the fins 511 and is then dissipated to the outside of the heat-conducting component 51.

[0042] The heat dissipation area of ​​the heat-conducting component 51 is increased by fins 511, thereby improving the heat dissipation effect of the heat-conducting component 51. The heat dissipation efficiency of the heat-conducting component 51 is further improved by allowing airflow to dissipate outward after passing through the fins 511.

[0043] In some embodiments of this application, the airflow assembly 52 includes a first fan assembly 521 and a second fan assembly 522. The first fan assembly 521 is used to direct the airflow toward the heat-conducting assembly 51. The second fan assembly 522 is used to direct the airflow away from the heat-conducting assembly 51. The first fan assembly 521 and the second fan assembly 522 are located on opposite sides of the heat-conducting assembly 51.

[0044] By directing the airflow towards the heat-conducting component 51 using the first fan assembly 521, external low-temperature airflow can quickly enter the heat-conducting component 51. By directing the airflow away from the heat-conducting component 51 using the second fan assembly 522, high-temperature airflow within the heat-conducting component 51 can be quickly extracted. This rapid entry of low-temperature airflow into the heat-conducting component 51 ensures that the temperature difference between the heat-conducting component 51 and the airflow remains within the expected range, thereby accelerating the rate at which the heat-conducting component 51 dissipates heat. After the heat-conducting component 51 dissipates heat, it forms a high-temperature airflow. By rapidly extracting this high-temperature airflow, heat can be quickly dissipated from the heat-conducting component 51, ensuring that the heat-conducting component 51 remains in a low-temperature environment, thus improving the cooling effect of the cooling device 50.

[0045] In some embodiments of this application, the device body 20 is provided with a first heat dissipation hole 21 and a second heat dissipation hole 22, which are located on opposite sides of the device body 20. A first fan assembly 521 is located near the first heat dissipation hole 21, and a second fan assembly 522 is located near the second heat dissipation hole 22. During the operation of the cooling device 50, low-temperature airflow from outside the device body 20 enters the device body 20 through the first heat dissipation hole 21, while high-temperature airflow from inside the device body 20 exits through the second heat dissipation hole 22. This ensures that the device body 20 remains in a low-temperature environment, improves the cooling effect of the cooling device 50, prevents overheating of functional modules within the device body 20, and guarantees the good working performance of the shielding device 10.

[0046] In some embodiments of this application, a power module 60 and an energy storage module 70 are installed inside the main body 20, and a switching device 80 is installed outside the main body 20. The power module 60 is used to ensure that the power from the outside meets the power requirements of the shielding device 10, the energy storage module 70 is used to store energy and supply power to the various functional modules inside the shielding device 10, and the switching device 80 is used to switch the power supply mode of the shielding device 10. Specifically, when the switching device 80 switches to the first power supply position, the shielding device 10 is powered by the power module 60. When the switching device 80 switches to the second power supply position, the shielding device 10 is powered by the energy storage module 70.

[0047] When an external power source is available, the switching device 80 switches to the first power supply position, allowing the shielding device 10 to be powered by the external power source. When no external power source is available, the switching device 80 switches to the second power supply position, allowing the shielding device 10 to be powered by its internal energy storage module 70. This allows the shielding device 10 to adapt to different working conditions and maintain its operational status even in the event of an external power failure, improving the reliability of the shielding device 10.

[0048] In some embodiments of this application, the shielding device 10 further includes a remote control unit 90, which is connected to the functional units within the device body 20 via a signal transmission line, so that the remote control unit 90 can remotely control the shielding device 10.

[0049] In some work environments, the shielding device 10 is remotely controlled via a remote control unit 90, thereby preventing operators from being exposed to high-radiation environments and ensuring their safety. The remote control unit 90 sends control signals to the shielding device 10 via a signal transmission line, thus preventing the signals sent by the remote control unit 90 from being shielded by the shielding device 10 itself, thereby ensuring the reliability and effectiveness of the control of the shielding device 10.

[0050] In some embodiments of this application, the main body 20 of the device is equipped with a power module 60, a first power amplifier module 32, a second power amplifier module 42, a cooling device 50, a control module 91, and an energy storage module 70.

[0051] The power supply module 60 is used to provide external power to meet the power requirements of the shielding device 10. The first power amplifier module 32 is used to generate and amplify the first signal. The first antenna module 31 is used to transmit the first signal outward. The second power amplifier module 42 is used to generate and amplify the second signal. The second antenna module 41 is used to transmit the second signal outward. The cooling device 50 is used to cool the first power amplifier module 32 and the second power amplifier module 42. The control module 91 is used to control the operation of the shielding device 10. The energy storage module 70 is used to store energy and supply power to the various functional modules within the shielding device 10.

[0052] When the main body 20 of the device is in a standing position, the power module 60 is located above the whole formed by the first power amplifier module 32, the second power amplifier module 42 and the cooling device 50, the energy storage module 70 is located below the whole formed by the first power amplifier module 32, the second power amplifier module 42 and the cooling device 50, and the control module 91 is installed near the lower part of the cooling device 50.

[0053] By placing the cooling device 50 in the middle of the main body 20, its cooling range can cover a wider area, ensuring its cooling effect and maintaining the temperature within the main body 20 within the expected range. By placing the power module 60 and energy storage module 70 on the upper and lower sides of the cooling device 50 respectively, the cooling device 50 accelerates the dissipation of heat generated by the power module 60 and energy storage module 70 during operation, thus preventing them from overheating. By installing the control module 91 near the lower part of the cooling device 50, the cooling device 50 accelerates the dissipation of heat generated by the control module 91 during operation, thus preventing it from overheating.

[0054] By placing the heavier energy storage module 70 at the bottom, the center of gravity of the shielding device 10 is lowered, making the shielding device 10 easier to move and more stable.

[0055] In the description of this specification, the references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] Furthermore, the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A portable multi-band shielding device, characterized in that, include: Equipment body; The first shielding unit is provided with a first antenna module; The second shielding unit is equipped with a second antenna module; The first antenna module is configured as an omnidirectional antenna, and the second antenna module is configured as a directional antenna. The first antenna module is installed on the outside of the device body, and the second antenna module is installed inside the device body.

2. The portable multi-band shielding device according to claim 1, characterized in that, The first shielding unit is also provided with a first power amplifier module, which is connected to the first antenna module; The second shielding unit is also provided with a second power amplifier module, which is connected to the second antenna module; The device body is equipped with a cooling device, which is used to cool down the first power amplifier module and the second power amplifier module.

3. The portable multi-band shielding device according to claim 2, characterized in that, The number of the first antenna modules is configured to be at least two, and the number of the second antenna modules is configured to be at least two; The number of the first power amplifier modules is adapted to the number of the first antenna modules, and the number of the second power amplifier modules is adapted to the number of the second antenna modules; Among them, the signals generated by different first power amplifier modules are the same or different, the signals generated by different second power amplifier modules are the same or different, and the signals generated by the first power amplifier module are different from the signals generated by the second power amplifier module.

4. The portable multi-band shielding device according to claim 2, characterized in that, The cooling device includes: A heat-conducting component is attached to one or more sides of the first power amplifier module and the second power amplifier module, and the heat-conducting component is used to accelerate the heat dissipation of the first power amplifier module and the second power amplifier module. An airflow assembly is used to accelerate the airflow velocity at the heat-conducting assembly.

5. The portable multi-band shielding device according to claim 4, characterized in that, The heat-conducting component is provided with fins; During the operation of the airflow assembly, the airflow generated by the airflow assembly passes through the fins and is then dissipated to the outside of the heat-conducting assembly.

6. The portable multi-band shielding device according to claim 4, characterized in that, The airflow assembly includes: A first fan assembly, the first fan assembly being used to direct airflow toward the heat-conducting assembly; A second fan assembly is used to direct airflow away from the heat-conducting component; The first fan assembly and the second fan assembly are located on opposite sides of the heat-conducting assembly.

7. The portable multi-band shielding device according to claim 6, characterized in that, The main body of the device is provided with a first heat dissipation hole and a second heat dissipation hole, which are located on both sides of the main body of the device, respectively. The first fan assembly is located near the first heat dissipation hole, and the second fan assembly is located near the second heat dissipation hole.

8. The portable multi-band shielding device according to claim 1, characterized in that, The main body of the equipment is equipped with a power module and an energy storage module, and a switching device is installed on the outside of the main body of the equipment. The power module is used to provide external electrical energy to meet the power requirements of the shielding device; the energy storage module is used to store electrical energy and supply power to the various functional modules within the shielding device; and the switching device is used to switch the power consumption mode of the shielding device. When the switching device switches to the first power supply position, the shielding device is powered by the power module. When the switching device switches to the second power supply position, the shielding device is powered by the energy storage module.

9. The portable multi-band shielding device according to claim 1, characterized in that, The shielding device also includes a remote control unit, which is connected to the functional units within the main body of the device via a signal transmission line, so that the remote control unit can remotely control the shielding device.

10. The portable multi-band shielding device according to claim 1, characterized in that, The main body of the device is equipped with a power module, a first power amplifier module, a second power amplifier module, a cooling device, a control module, and an energy storage module. The power supply module is used to provide external power to meet the power requirements of the shielding device. The first power amplifier module is used to generate and amplify a first signal. The first antenna module is used to transmit the first signal outward. The second power amplifier module is used to generate and amplify a second signal. The second antenna module is used to transmit the second signal outward. The cooling device is used to cool the first power amplifier module and the second power amplifier module. The control module is used to control the operation of the shielding device. The energy storage module is used to store energy and supply power to the various functional modules within the shielding device. When the main body of the device is in a standing position, the power module is located above the whole formed by the first power amplifier module, the second power amplifier module and the cooling device, the energy storage module is located below the whole formed by the first power amplifier module, the second power amplifier module and the cooling device, and the control module is installed near the bottom of the cooling device.

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