Camera body and camera
By designing the separate cavity settings and using shields in the camera body, the problem of insufficient electromagnetic compatibility of the NMR scanning indoor camera is solved, and high-quality monitoring and scanning in high-interference environments are achieved.
Patent Information
- Application Number
- CN202422024195.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the MRI scan room, existing surveillance cameras may be disturbed by static magnetic fields, extremely low frequency electromagnetic fields and radio frequency electromagnetic waves, resulting in insufficient electromagnetic compatibility, affecting the quality of the scanned image and the clarity of the monitoring image.
A camera body is designed, including an outer shell, a first circuit board and an inner shell assembly, which reduces interference and improves electromagnetic compatibility through the separation of the cavity and the use of shielding.
It effectively reduces interference and improves the EMC performance of the camera, so that it can monitor the patient's condition in real time without affecting MR scanning.
Smart Images

Figure CN223024496U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of video surveillance, and particularly to a camera body and a camera. Background Art
[0002] An electromagnetic shielding camera is installed in a nuclear magnetic resonance (NMR) scanning room to observe the real-time situation of patients in the NMR scanning room. However, due to the principle of nuclear magnetic resonance imaging, when the NMR imager works in the NMR room, three interference sources, namely a strong static magnetic field, an extremely low-frequency electromagnetic field, and a radio frequency electromagnetic wave, will be generated. The induction intensity of the static magnetic field in the NMR room is relatively strong, and it is required that the external electromagnetic radiation of electrical equipment in the NMR room be lower than -100 dB. Therefore, electrical equipment compatible with NMR requires anti-magnetic and anti-strong radio frequency interference, and there should be no external electromagnetic radiation. If the used surveillance camera does not meet the requirements of EMC (Electro Magnetic Compatibility), it may interfere with the quality of the NMR scanning image, cause misdiagnosis, or the surveillance image of the surveillance camera is unclear, resulting in a surveillance blind area. Summary of the Utility Model
[0003] An embodiment of this application provides a camera body, which is fixedly installed with a lens assembly. The body includes a housing, a first circuit board, and an inner housing assembly. The housing encloses a first receiving cavity. The first circuit board and the inner housing assembly are located in the first receiving cavity. The inner housing assembly includes an inner housing, a second circuit board, and a light-transmitting shielding member. The inner housing encloses a second receiving cavity. The second circuit board and the shielding member are located in the second receiving cavity. The body includes a first assembling portion, and the first assembling portion is provided with a first through hole communicating with the second receiving cavity. The second assembling portion of the lens assembly is assembled in the first through hole and fixed to the first assembling portion. The shielding member separates the lens assembly from the second circuit board.
[0004] Further, the housing includes a first housing and a cover plate fixed to the first housing. The cover plate and the first housing enclose the first receiving cavity. The cover plate is provided with a second through hole. The first assembling portion is disposed on the inner housing and assembled in the second through hole. The body includes a first conductive cotton, and the first conductive cotton is located between the first housing and the cover plate to fill the gap between the first housing and the cover plate.
[0005] Further, the first housing includes a side wall and a rear side wall connected to the side wall. The cover plate is fixed to the side wall, and the cover plate and the rear side wall are respectively located on opposite sides of the side wall. The first conductive cotton is located between the side wall and the cover plate.
[0006] Further, a low dropout linear regulator, a PHY component, an optical module interface, and a power line interface are provided on the first circuit board, and a first avoidance hole and a second avoidance hole are provided on the rear side wall to respectively avoid the optical module interface and the power line connected to the power line interface.
[0007] Further, the body includes a shielding cover fixed to the first circuit board to shield the components on the first circuit board.
[0008] Further, the inner shell includes a first inner shell and a baffle fixed to the first inner shell. The baffle and the first inner shell enclose the second receiving cavity. The first assembling portion is disposed on the first inner shell, and the shielding member is fixed to the first inner shell.
[0009] Further, the body includes a bracket located in the first receiving cavity. The first circuit board and the inner shell are fixed to the bracket. The bracket includes a main body and a front side plate connected to the main body. The first circuit board is fixed to the main body, and the front side plate is provided with a third through hole for the first assembling portion to pass through.
[0010] Further, the body includes a second conductive cotton located between the inner shell and the front side plate to fill the gap between the inner shell and the front side plate.
[0011] Further, a first through hole is provided on the front side plate, a second through hole is provided on the inner shell, and the body includes a first screw. The first screw passes through the first through hole and is assembled in the second through hole and fixed to the inner shell.
[0012] An embodiment of the present application further provides a camera, including a lens assembly and the above-mentioned body, and the lens assembly is fixed to the body.
[0013] The outer shell of the body in the embodiment of the present application encloses a first receiving cavity. The first circuit board is located in the first receiving cavity. The inner shell is located in the first receiving cavity and encloses a second receiving cavity. The second circuit board is located in the second receiving cavity. The shielding member is located in the second receiving cavity to separate the lens assembly from the second circuit board. The separate cavity setting of the first receiving cavity and the second receiving cavity and the setting of the shielding member can reduce interference, so that the camera has better EMC performance. Description of the Drawings
[0014] Figure 1 is a schematic diagram of the camera according to the embodiment of the present application;
[0015] Figure 2 is Figure 1 a schematic diagram before the lens assembly and the body shown in the figure are assembled;
[0016] Figure 3 isFigure 2 Schematic diagram of the lens assembly shown;
[0017] Figure 4 is Figure 1 Exploded view of the camera shown;
[0018] Figure 5 is Figure 2 Schematic diagram before the cover plate of the fuselage and the first outer shell are assembled, as shown;
[0019] Figure 6 is Figure 2 Schematic diagram before the cover plate of the fuselage, the first outer shell and the first conductive cotton are assembled, as shown;
[0020] Figure 7 is Figure 6 Schematic diagram of the first outer shell shown;
[0021] Figure 8 is Figure 4 Exploded view of the inner shell assembly shown;
[0022] Figure 9 is Figure 8 Schematic diagram before the first inner shell and the shielding part of the inner shell assembly are assembled, as shown;
[0023] Figure 10 is Figure 4 Schematic diagram of the bracket shown;
[0024] Figure 11 is Figure 4 Schematic diagram before the bracket, the second conductive cotton and the first inner shell are assembled, as shown;
[0025] Figure 12 is Figure 9 Schematic diagram of the first inner shell shown;
[0026] Figure 13 is Figure 12 Schematic diagram of another view of the first inner shell shown;
[0027] Figure 14 is Figure 4 Schematic diagram before the bracket and the inner shell assembly are assembled, as shown;
[0028] Figure 15 is Figure 4 Schematic diagram after the bracket, the inner shell assembly and the first circuit board are assembled, as shown;
[0029] Figure 16 is Figure 7 Schematic diagram of another view of the first outer shell shown;
[0030] Figure 17 is Figure 2Schematic diagram before the first circuit board and the shielding cover are assembled as shown;
[0031] Figure 18 is Figure 17 Schematic diagram after the first circuit board and the shielding cover are assembled as shown. Detailed implementation manners
[0032] Here, in combination with the accompanying drawings, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0033] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement conditions between components in a specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, terms such as "first" and "second" in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.
[0034] Refer to Figures 1 to 3 , the camera 300 in the implementation manner of the present application can be installed in the nuclear magnetic resonance scanning room to observe the real-time situation of patients in the nuclear magnetic resonance scanning room. The present application does not limit the usage scenario of the camera 300.
[0035] The camera 300 includes a body 100 and a lens assembly 200 fixedly installed with the body 100. In some implementation manners, the lens assembly 200 is detachably connected to the body 100 to facilitate the maintenance of the lens assembly 200 and the body 100. In some implementation manners, the lens assembly 200 can also be fixed to the body 100 and is not detachable.
[0036] In some implementation manners, the body 100 includes a first assembly part 311, the first assembly part 311 is provided with a first through hole 3112, the lens assembly 200 includes a second assembly part 201, and the second assembly part 201 is assembled in the first through hole 3112 and fixed to the first assembly part 311.
[0037] In some implementation manners, the first assembly part 311 is threadedly connected to the second assembly part 201 to facilitate the assembly and disassembly of the lens assembly 200. The first assembly part 311 and the second assembly part 201 can also be fixed by means of buckles or the like.
[0038] Reference Figure 2 and Figures 4 to 7 As shown in FIGS. 1-3, the fuselage 100 includes a housing 1, a first circuit board 2, and an inner housing assembly 3. The housing 1 defines a first receiving cavity 11, and the first circuit board 2 and the inner housing assembly 3 are located in the first receiving cavity 11.
[0039] In some embodiments, the housing 1 is made of a non-magnetic metal material, such as aluminum alloy. In the present application, the housing 1 is made of aluminum alloy, which has a lower cost.
[0040] In some embodiments, the housing 1 includes a first housing 12 and a cover plate 13 fixed to the first housing 12. The cover plate 13 and the first housing 12 define the first receiving cavity 11. The fuselage 100 includes a first conductive cotton 4, which is located between the first housing 12 and the cover plate 13 to fill the gap between the first housing 12 and the cover plate 13, so as to enhance the shielding effect.
[0041] In some embodiments, the first conductive cotton 4 is an omnidirectional conductive cotton, which can be a sponge formed by extruding polyethylene or modified polyethylene with conductive fillers and antistatic agents, then undergoing radiation crosslinking and high-temperature foaming, and then wrapping conductive cloth around the sponge. It has good shielding performance.
[0042] In some embodiments, the first conductive cotton 4 is in a frame shape, and the first conductive cotton 4 can also be formed by splicing multiple pieces into a frame shape.
[0043] In some embodiments, the cover plate 13 is provided with a second through hole 131, and the first assembly portion 311 is assembled in the second through hole 131 to facilitate the assembly of the first assembly portion 311 and the second assembly portion 201.
[0044] In some embodiments, the cover plate 13 includes a base portion 132 and a convex edge 133 extending outward from the edge of the base portion 132. The second through hole 131 is provided on the base portion 132.
[0045] In some embodiments, a part of the inner housing assembly 3 is located in the space surrounded by the base portion 132.
[0046] Combined with Figure 16 As shown in FIGS. 1-3, in some embodiments, the first housing 12 includes a side wall 121 and a rear side wall 122 connected to the side wall 121.
[0047] The cover plate 13 is fixed to the side wall 121 and is located on opposite sides of the side wall 121 from the rear side wall 122. The convex edge 133 is fixed to the side wall 121, and the first conductive cotton 4 is clamped between the side wall 121 and the convex edge 133.
[0048] In some embodiments, the cover plate 13 can be fixed to the side wall 121, and the rear side wall 122 is detachably connected to the side wall 121.
[0049] In some embodiments, a first hole 1331 is provided on the convex edge 133, and a second hole 1231 is provided on the side wall 121. The fuselage 100 includes a first fixing screw (not shown), and the first fixing screw passes through the first hole 1331 and is assembled in the second hole 1231 and fixed to the side wall 121.
[0050] In some embodiments, a third hole 41 is provided on the first conductive cotton 4, and the third hole 41 is located between the first hole 1331 and the second hole 1231. The first fixing screw passes through the first hole 1331 and the third hole 41 and is assembled in the second hole 1231 and fixed to the side wall 121 to increase the stability of the first conductive cotton 4.
[0051] In some embodiments, the first conductive cotton 4 is fixedly adhered to the side wall 121, or to the convex edge 133, or to both the side wall 121 and the convex edge 133. When adhered, the first fixing screw can also be added for fixation.
[0052] In some embodiments, the first housing 12 includes a positioning post 123 protruding into the first receiving cavity 11, and the second hole 1231 is provided on the positioning post 123. Compared with the second hole 1231 being provided on the side wall 121, the thickness of the side wall 121 is reduced, which is beneficial to the miniaturization of the fuselage 100.
[0053] In some embodiments, the fuselage 100 further includes a decorative cover 5, and the decorative cover 5 is fixed to the cover plate 13 to cover the cover plate 13, which can protect the cover plate 13 and also play a role in aesthetics. The decorative cover 5 is provided with a fourth through hole 51 aligned with the second through hole 131 to receive the first assembly portion 311.
[0054] In some embodiments, the decorative cover 5 is made of a plastic material and is relatively light, which is beneficial to the lightweight of the fuselage 100. The present application does not limit the material of the decorative cover 5.
[0055] See Figures 8 to 10, the inner housing assembly 3 includes an inner housing 31, a second circuit board 32, and a shielding member 33. The inner housing 31 defines a second receiving cavity 3120. The first assembling portion 311 is provided on the inner housing 31. The second circuit board 32 and the shielding member 33 are located in the second receiving cavity 3120, and the shielding member 33 separates the lens assembly 200 from the second circuit board 32.
[0056] The shielding member 33 is light transmissive. While not affecting the light transmission and imaging function, it also plays an electromagnetic shielding role, solving the problem of shielding leakage at the first through hole 3112. The shielding member 33 can be a shielding wire mesh or conductive glass, etc. The present application does not limit its type, as long as it can achieve electromagnetic shielding without affecting light transmission.
[0057] The separate cavity arrangement of the first receiving cavity 11 and the second receiving cavity 3120 and the arrangement of the shielding member 33 can reduce interference, enabling the camera 300 to have better EMC performance and effectively improving the magnetic interference shielding effect. When the camera 300 is applied in a nuclear magnetic resonance scanning room, the camera 300 can assist medical staff in real-time monitoring of the examinee, and at the same time will not cause any electromagnetic interference to the MR (Magnetic Resonance) scan.
[0058] In some embodiments, the inner housing 31 includes a first inner housing 312 and a baffle 313 fixed to the first inner housing 312. The baffle 313 and the first inner housing 312 define the second receiving cavity 3120. The first assembling portion 311 is provided on the first inner housing 312, and the shielding member 33 is fixed to the first inner housing 312.
[0059] In some embodiments, the first inner housing 312 includes a front wall 3121 and side walls 3122 extending from the front wall 3121. The baffle 313 is fixed to the side walls 3122, and the first assembling portion 311 is provided on the front wall 3121.
[0060] In some embodiments, the first circuit board 2 and the second circuit board 32 are connected by a connecting wire (not shown). In some embodiments, the connecting wire passes through the gap between the baffle 313 and the side walls 3122. In some embodiments, holes can also be formed in the baffle 313 for the connecting wire to pass through.
[0061] In some embodiments, the shielding member 33 is fixed to the front wall 3121.
[0062] In some embodiments, the front wall 3121 is provided with a first assembly hole 3123, the shielding member 33 is provided with a second assembly hole 331, the body includes a second fixing screw, and the second fixing screw is assembled in the second assembly hole 331 and the first assembly hole 3123 and fixed to the front wall 3121 to facilitate the assembly and disassembly of the shielding member 33.
[0063] In some embodiments, the front wall 3121 is provided with a receiving groove 3124 for receiving the shielding member 33 to increase the stability of the shielding member 33.
[0064] In some embodiments, the shielding member 33 is provided with a protruding portion 332, and the front wall 3121 is provided with a groove portion 3125 for receiving the protruding portion 332 to increase the stability of the shielding member 33.
[0065] The second assembly hole 331 can be provided on the protruding portion 332.
[0066] In some embodiments, the inner shell assembly 3 includes a fixing plate 34. The fixing plate 34 is fixed to the front wall 3121, and the second circuit board 32 is fixed to the fixing plate 34 to facilitate the fixing of the second circuit board 32. A photosensitive device is provided on the second circuit board 32 to achieve photosensitive imaging. The fixing plate 34 is located between the front wall 3121 and the second circuit board 32 and is provided with a fifth through hole 341 aligned with the first through hole 3112 to avoid blocking the photosensitive device.
[0067] In some embodiments, the side wall 3122 is provided with a third assembly hole 3128, and the baffle 313 is provided with a fourth assembly hole 3131. The body 100 includes a third fixing screw (not shown), and the third fixing screw is assembled in the fourth assembly hole 3131 and the third assembly hole 3128 and fixed to the side wall 3122 to facilitate the assembly and disassembly of the baffle 313.
[0068] Refer Figure 4 And Figures 10 to 14 , the body 100 includes a bracket 6. The bracket 6 is located in the first receiving cavity 11, and the first circuit board 2 and the inner shell 31 are fixed to the bracket 6 to facilitate the assembly and disassembly of the first circuit board 2 and the inner shell assembly 3.
[0069] The bracket 6 includes a main body 61 and a front side plate 62 connected to the main body 61. The first circuit board 2 is fixed to the main body 61, and the front side plate 62 is provided with a third through hole 621 for the first assembly portion 311 to pass through.
[0070] In some embodiments, the main body 61 includes a bottom plate 611 and a pair of connecting plates 612 connected to the bottom plate 611, and the front side plate 62 is connected to the pair of connecting plates 612. The pair of connecting plates 612 are located on opposite sides of the bottom plate 611 and the front side plate 62. The first circuit board 2 is fixed to the bottom plate 611.
[0071] In some embodiments, the first circuit board 2 is fixed to the bottom plate 611 by a fourth fixing screw (not shown) to facilitate the assembly and disassembly of the first circuit board 2.
[0072] In some embodiments, the fuselage 100 includes a second conductive cotton 7, and the second conductive cotton 7 is located between the inner shell 31 and the front side plate 62 to fill the gap between the inner shell 31 and the front side plate 62 and enhance the shielding effect.
[0073] In some embodiments, the second conductive cotton 7 is an all-round conductive cotton, which can be a sponge made by extruding polyethylene or modified polyethylene with conductive fillers and antistatic agents, then high-temperature foaming after radiation cross-linking, and then wrapping conductive cloth around the sponge. It has good shielding performance.
[0074] In some embodiments, the second conductive cotton 7 is in a frame shape, and the second conductive cotton 7 can also be formed by splicing multiple pieces into a frame shape.
[0075] In some embodiments, the second conductive cotton 7 is fixedly adhered to the front side plate 62, or, fixedly adhered to the inner shell 31, or, fixedly adhered to both the front side plate 62 and the inner shell 31.
[0076] In some embodiments, the second conductive cotton 7 is located between the front wall 3121 and the front side plate 62.
[0077] In some embodiments, the front side plate 62 is provided with a first through hole 622, the inner shell 31 is provided with a second through hole 3126, and the fuselage 100 includes a first screw 8. The first screw 8 passes through the first through hole 622 and is assembled in the second through hole 3126 and fixed to the inner shell 31 to facilitate the assembly and disassembly of the inner shell assembly 3.
[0078] In some embodiments, the front side plate 62 is provided with a lug 63, the first through hole 622 is provided on the lug 63, the inner shell 31 is provided with a recessed groove 3127, and the lug 63 is located in the recessed groove 3127 to prevent the lug 63 from protruding and causing scratching.
[0079] See Figure 14When the inner shell assembly 3 is assembled with the bracket 6, the inner shell assembly 3 is first placed between the pair of connecting plates 612, and then moved in the direction of the arrow towards the front side plate 62 until the lug 63 is located in the recessed groove 3127. Then, the first screw 8 is used to pass through the first through hole 622 and assembled in the second through hole 3126 and fixed to the inner shell 31.
[0080] Refer Figures 15 to 16 In some embodiments, one end of the bracket 6 away from the front side plate 62 is fixed to the rear side wall 122.
[0081] In some embodiments, one end of the bracket 6 away from the front side plate 62 is fixed to the rear side wall 122 by a fifth fixing screw 82 to facilitate the assembly and disassembly of the bracket 6. A fifth assembly hole 1221 is provided on the rear side wall 122 for the fifth fixing screw 82 to pass through and be fixed to the bracket 6.
[0082] When the fuselage 100 is assembled, after the inner shell assembly 3 is fixed to the bracket 6, the bracket 6 is inserted into the first receiving cavity 11 from the front side of the first outer shell 12, and then the fifth fixing screw 82 is assembled into the fifth assembly hole 1221 and fixed to the bracket 6 to achieve the fixation of the bracket 6 to the first outer shell 12. Then, the cover plate 13 is fixed to the first outer shell 12.
[0083] Refer Figures 16 to 18 A low-dropout linear regulator (not shown) and a PHY component 21 (Physical port physical layer) are provided on the first circuit board 2, which can cancel the network transformer and reduce the high-frequency radiation source.
[0084] An optical module 23 and a power supply interface 24 are also provided on the first circuit board 2. The optical module 23 is provided with an optical module interface 231. The rear side wall 122 is provided with a first avoidance hole 1223 and a second avoidance hole 1224 to respectively avoid the optical module interface 231 and the power supply line (not shown) connected to the power supply interface 24, realizing a quick connection operation, achieving plug-and-play, and improving the convenience of connection.
[0085] The fuselage 100 includes a shielding cover 9 fixed to the first circuit board 2 to shield the components on the first circuit board 2. The components are located in the space surrounded by the shielding cover 9 to ensure the reliability of electromagnetic compatibility.
[0086] The configuration of the optical module 23 enables the video signal collected by the first circuit board 2 to be transmitted through an optical fiber. The optical signal is transmitted through an optical fiber cable, reducing the influence of electric field interference, facilitating long-distance transportation, greatly reducing the loss and attenuation of the signal during transmission, and ensuring the clarity and stability of the video.
[0087] In some embodiments, the shielding cover 9 is made of cupronickel to ensure the reliability of electromagnetic compatibility. The present application does not limit the material of the shielding cover 9, and any material that can achieve electromagnetic shielding can be used.
[0088] One or more shielding covers 9 may be provided, and one shielding cover may cover one or more of the devices. The devices include, but are not limited to, the low-dropout linear regulator, the PHY component 21, and the optical module 23.
[0089] In some embodiments, the high-speed signals on the first circuit board 2 are drilled holes nearby and routed on the inner layer of the first circuit board 2 to prevent radiation through the surface layer and ensure the reliability of electromagnetic compatibility.
[0090] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A camera body, fixedly mounted on a lens assembly, characterized in that: The body includes an outer shell, a first circuit board and an inner shell assembly, the outer shell forms a first receiving cavity, the first circuit board and the inner shell assembly are located in the first receiving cavity, the inner shell assembly includes an inner shell, a second circuit board and a light-transmissive shielding component, the inner shell forms a second receiving cavity, the second circuit board and the shielding component are located in the second receiving cavity, the body includes a first assembling part, the first assembling part is provided with a first through hole communicating with the second receiving cavity, the second assembling part of the lens assembly is assembled in the first through hole and fixed to the first assembling part, and the shielding component separates the lens assembly from the second circuit board.
2. The camera body according to claim 1, characterized in that: The outer shell includes a first outer shell and a cover plate fixed to the first outer shell, the cover plate and the first outer shell form the first receiving cavity, the cover plate is provided with a second through hole, the first assembly part is arranged in the inner shell and assembled in the second through hole, the body includes first conductive cotton, and the first conductive cotton is located between the first outer shell and the cover plate to fill the gap between the first outer shell and the cover plate.
3. The camera body according to claim 2, characterized in that: The first shell includes a side wall and a rear side wall connected to the side wall, the cover plate is fixed to the side wall and is located on two opposite sides of the side wall with the rear side wall respectively, and the first conductive cotton is located between the side wall and the cover plate.
4. The camera body according to claim 3, characterized in that: The first circuit board is provided with a low voltage difference linear regulator, a PHY element, an optical module interface and a power line interface, and the rear side wall is provided with a first avoidance hole and a second avoidance hole to avoid the optical module interface and the power line connected to the power line interface respectively.
5. The camera body according to claim 1, characterized in that: The body includes a shielding cover fixed to the first circuit board to shield components on the first circuit board.
6. The camera body according to claim 1, characterized in that: The inner shell includes a first inner shell and a baffle fixed to the first inner shell, the baffle and the first inner shell form the second receiving cavity, the first assembly part is arranged on the first inner shell, and the shielding component is fixed to the first inner shell.
7. The camera body according to any one of claims 1 to 6, characterized in that: The body includes a bracket, which is located in the first receiving cavity. The first circuit board and the inner shell are fixed to the bracket. The bracket includes a main body and a front side plate connected to the main body. The first circuit board is fixed to the main body, and the front side plate is provided with a third through hole for the first assembly part to pass through.
8. The camera body according to claim 7, characterized in that: The body includes second conductive cotton, and the second conductive cotton is located between the inner shell and the front side plate to fill the gap between the inner shell and the front side plate.
9. The camera body according to claim 7, characterized in that: The front side plate is provided with a first through hole, the inner shell is provided with a second through hole, and the body includes a first screw, which passes through the first through hole and is assembled in the second through hole and fixed to the inner shell.
10. A camera, characterized in that: It comprises a lens assembly and a body as claimed in any one of claims 1 to 9, wherein the lens assembly is fixed to the body.