Anti-static structure for vehicle-mounted camera and vehicle-mounted camera

Abstract

The utility model provides an anti-static structure for a vehicle-mounted camera and the vehicle-mounted camera. The vehicle-mounted camera comprises a shell, a lens and a printed circuit board assembly, the anti-static structure comprises a first protection part which is arranged in the shell, located between the lens and the printed circuit board assembly and used for attracting static electricity entering the shell, the first protection part is electrically connected with a board body of the printed circuit board assembly, and the printed circuit board assembly is electrically connected with the first protection part. The static electricity conducting plate is used for conducting attracted static electricity to a connector on the shell through the plate body and releasing the static electricity; and the second protection part is arranged on the board body, is close to the memory of the printed circuit board assembly, and is used for attracting static electricity, conducting the static electricity to the connector through the board body and releasing the static electricity. According to the anti-static structure provided by the embodiment of the invention, a plurality of parallel and independent electrostatic discharge paths can be formed through the first protection part and the second protection part, so that static electricity can be discharged through other paths even if a certain path fails, the reliability is improved, and the imaging quality of the vehicle-mounted camera is ensured.

Description

Technical Field

[0001] This application belongs to the field of vehicle camera technology, and particularly relates to an anti-static structure for vehicle cameras and a vehicle camera. Background Technology

[0002] Vehicle-mounted cameras, which acquire image information through lenses and image sensors, are the earliest and most mature perception devices used in autonomous driving. They can achieve 360° visual perception. The core hardware mainly includes lens assemblies (optical lenses, filters, protective films), image sensors, power supplies, serializers, connectors, etc. Vehicle-mounted cameras need to maintain stable operation under various complex conditions such as high and low temperatures, humidity, strong low light, and vibration. Therefore, they have higher safety levels and manufacturing performance requirements. The anti-static rating mainly refers to the international standard ISO 10605, which stipulates that vehicle-mounted electronic equipment should be able to withstand ±25kV electrostatic discharge.

[0003] Because vehicles easily generate a large amount of static electricity during operation, and current automotive cameras generally use metal lenses and plastic housings with insufficiently tight connections, static electricity can easily enter the camera's interior through gaps. Once accumulated inside, this static electricity cannot be effectively conducted away, potentially damaging the camera's electronic components and interfering with the imaging process. This can lead to noise, distortion, blurriness, or signal loss in the image, and may even be conducted through the lens to the internal circuitry, damaging sensitive electronic components (such as image sensors and memory). This fails to meet the anti-static requirements of international standards such as ISO 10605 for automotive electronic equipment. Therefore, providing an anti-static structure that effectively prevents static electricity and ensures the image quality of automotive cameras is a pressing problem in this field. Utility Model Content

[0004] To address the aforementioned technical problems in the prior art, this application provides an anti-static structure for vehicle-mounted cameras and a vehicle-mounted camera. The anti-static structure can effectively prevent static electricity, protect the vehicle-mounted camera from static interference or damage, and improve the reliability and lifespan of the vehicle-mounted camera.

[0005] The technical solution adopted in this application embodiment is: an anti-static structure for an in-vehicle camera, the in-vehicle camera including a housing, a lens disposed on the housing, and a printed circuit board assembly disposed within the housing, the anti-static structure comprising:

[0006] A first protective component is disposed inside the housing and located between the lens and the printed circuit board assembly for attracting static electricity entering the housing. The first protective component is electrically connected to the board body of the printed circuit board assembly for conducting the attracted static electricity through the board body to the connector on the housing and releasing it.

[0007] The second protective component, which is disposed on the board and close to the memory of the printed circuit board assembly, is used to attract static electricity and conduct the static electricity through the board to the connector and release it.

[0008] In an optional embodiment, the first protective component includes a shielding ring and a plurality of connecting arms connected to the outer periphery of the shielding ring. The hollow portion inside the shielding ring is opposite to the lens and forms a light-transmitting portion. The connecting arms are fixed to and electrically connected to the board body of the printed circuit board assembly.

[0009] In an optional embodiment, the shielding ring has at least one sharp corner protruding toward one side of the lens.

[0010] In an optional embodiment, the sharp corner is formed by partially lifting and bending the shielding ring upwards.

[0011] In an optional embodiment, a first connection hole is provided at the first end of the connecting arm away from the shielding ring; the plate body is provided with a plurality of second connection holes corresponding one-to-one with the first connection holes on the first ends of the plurality of connecting arms, the second connection holes extending to the side of the plate body away from the connecting arm, and the side of the plate body facing the connecting arm having a conductive bonding surface surrounding the second connection hole; the first end of the connecting arm is tightly fitted to the conductive bonding surface with the first connection hole and the second connection hole facing each other, so that the connecting arm is electrically connected to the plate body, and the connecting arm and the plate body are fixed by screws that pass through the second connection hole and the first connection hole in sequence.

[0012] In an alternative embodiment, the first end of the connecting arm is recessed toward one side of the plate to avoid the protrusion on the housing.

[0013] In an optional embodiment, there are two connecting arms, which are axially symmetrical about the center of the shielding ring on the outer periphery of the shielding ring; and / or

[0014] The connecting arm and the shielding ring are an integral structure; and / or

[0015] The outer surfaces of the connecting arm and the shielding ring are provided with an anti-reflective layer to prevent light reflection.

[0016] In an optional embodiment, the second protective component includes a base and a current-guiding pin. The base is fixed to the board body of the printed circuit board assembly, and the current-guiding pin is disposed on the base and extends toward the lens.

[0017] The vehicle-mounted camera includes a housing, a lens, and a printed circuit board assembly, and also includes an anti-static structure for the vehicle-mounted camera in any of the above embodiments.

[0018] In an optional embodiment, the housing includes a first housing portion and a second housing portion;

[0019] The first housing is a cylindrical structure with open ends. The second housing is located at the first open end of the first housing and forms a cavity with the first housing. The printed circuit board assembly is located in the cavity. The lens is installed at the second open end of the first housing, and the tail end of the lens extends into the cavity and forms a space between the lens and the printed circuit board assembly for installing the first protective component.

[0020] The second housing is provided with the connector, which is electrically connected to the printed circuit board assembly.

[0021] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: The anti-static structure of the embodiments of this application forms multiple parallel and independent electrostatic discharge paths by setting a first protective component and a second protective component. This ensures that even if one path fails, static electricity can still be released through other paths, improving reliability and guaranteeing the imaging quality of the vehicle camera. Furthermore, it avoids the risk of damage to the PCBA board caused by concentrated static electricity release on a single path. The vehicle camera of the embodiments of this application can resist ±25kV electrostatic discharge, meeting the anti-static requirements of international standards such as ISO 10605 for vehicle electronic equipment.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0023] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0024] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0025] Figure 1 This is a cross-sectional view of an anti-static structure used in a vehicle-mounted camera, according to an embodiment of this application.

[0026] Figure 2 This is a three-dimensional structural diagram of the first protective component according to an embodiment of this application.

[0027] Figure 3This is a three-dimensional structural diagram of the second protective component according to an embodiment of this application.

[0028] Figure 4 This is a front view of the second protective component according to an embodiment of this application.

[0029] Figure 5 This is a three-dimensional structural diagram of the vehicle-mounted camera according to an embodiment of this application.

[0030] Figure 6 This is a front view of the vehicle-mounted camera according to an embodiment of this application.

[0031] Figure 7 This is an exploded view of the vehicle-mounted camera according to an embodiment of this application.

[0032] Figure 8 This is a schematic diagram of the internal structure of the vehicle-mounted camera according to an embodiment of this application after removing the second housing and the printed circuit board assembly.

[0033] Figure label:

[0034] 1-First protective component; 11-Shielding ring; 111-Sharp corner; 112-Through hole; 12-Connecting arm; 121-First section; 122-Second section; 13-Light-transmitting part; 14-First connecting hole;

[0035] 2-Second protective component; 21-Base; 22-Electrical needle;

[0036] 3-Shell; 31-First shell portion; 311-Boss; 32-Second shell portion; 33-Cavity;

[0037] 4-lens;

[0038] 5-PCBA; 51-Board; 52-Image sensor; 53-Memory; 6-Connector. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0040] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0042] This application provides an anti-static structure for an automotive camera. For example... Figure 1 As shown, the vehicle-mounted camera includes a housing 3, a lens 4 mounted on the housing 3, and a printed circuit board assembly (PCBA, hereinafter referred to as PCBA 5) housed within the housing 3. PCBA 5 includes a board body 51 and an image sensor 52 and a memory 53 mounted on the board body 51. The image sensor 52 of PCBA 5 is opposite to the lens 4. The lens 4 is used to precisely focus light onto the image sensor 52. The image sensor 52 captures the light transmitted from the lens 4 and generates image information based on the light intensity of each pixel. A connector 6 is provided on the housing 3, and the connector 6 is electrically connected to PCBA 5.

[0043] Continue to combine Figure 1 The anti-static structure of this application embodiment includes a first protective component 1 and a second protective component 2. The first protective component 1 is disposed inside the housing 3, located between the lens 4 and the PCBA 5, and avoids the path for light transmission between the lens 4 and the image sensor 52. The first protective component 1 is used to attract static electricity entering the housing 3 and is electrically connected to the board 51 of the PCBA 5, and is used to conduct the attracted static electricity through the board 51 to the connector 6 on the housing 3 and release it. The second protective component 2 is disposed on the board 51 and is close to the memory 53 of the PCBA 5, and is used to attract static electricity near the memory 53 and conduct the attracted static electricity through the board 51 to the connector 6 on the housing 3 and release it.

[0044] The anti-static structure of this embodiment can simultaneously protect the image sensor 52 and memory 53 of PCBA 5 from electrostatic interference by setting the first protective component 1 and the second protective component 2, thus ensuring the imaging quality of the vehicle camera.

[0045] In some embodiments, such as Figure 2 As shown, the first protective component 1 includes a shielding ring 11 and multiple connecting arms 12 connected to the outer periphery of the shielding ring 11. The hollow portion inside the shielding ring 11 faces the lens 4 and forms a light-transmitting portion 13. The light-transmitting portion 13 allows the lens 4 to transmit light normally to the image sensor 52, preventing the shielding ring 11 from affecting the normal operation of the lens 4 and the image sensor 52. The connecting arms 12 are fixed and electrically connected to the board 51 of the PCBA 5. By setting the connecting arms 12, it is easy to fix the first protective component 1 to the PCBA 5 and make electrical connections. This not only firmly fixes the first protective component 1 to the PCBA 5, but also conducts static electricity to the PCBA 5. The opposing annular surfaces of the shielding ring 11 do not contact the lens 4 and the board 51, but have a certain gap. That is, the shielding ring 11 is suspended between the board 51 (image sensor 52) and the lens 4 by the connecting arms 12, which is conducive to the shielding ring 11 attracting static electricity to itself and not conducting it to the lens 4 and / or the image sensor 52.

[0046] Both the shielding ring 11 and the connecting arm 12 are made of conductive metal, preferably brass. Brass has good conductivity and elasticity, which can ensure that it can maintain a good connection with PCBA 5 under different temperature or vibration conditions, that is, maintain effective grounding performance. The thickness of the shielding ring 11 and the connecting arm 12 can be the same or different, and the thickness of both can be, for example, between 0.1 and 0.3 mm, preferably 0.2 mm.

[0047] Understandably, the light-transmitting part 13 can be hollowed out to ensure that there is no obstruction between the lens 4 and the image sensor 52, thus not affecting the quality of light transmission. The light-transmitting part 13 can also have structural components made of a light-transmitting material, such as glass. To adapt to different devices, it is preferable that the light-transmitting part 13 be hollowed out to avoid poor imaging results due to the presence of light-transmitting structural components on the light-transmitting part 13, thus preventing some imaging requirements from being met.

[0048] Continue to combine Figure 2The shielding ring 11 has at least one pointed corner 111 protruding towards the side of the lens 4. Due to the electrostatic discharge effect, the pointed corner 111 makes it easier to attract static electricity to the shielding ring 11. At the same time, since the pointed corner 111 protrudes from the surface of the shielding ring 11, it is equivalent to bringing the distance between the lens 4 and the PCBA 5 board closer. Since the shielding ring 11 is electrically connected to the PCBA 5 through the connecting arm 12, the grounding of the PCBA 5 board is raised from its original position to the pointed corner 111 of the shielding ring 11, which further reduces the probability of static electricity entering the housing 3 randomly hitting the PCBA 5, achieving a better electrostatic protection effect and improving the reliability of the vehicle camera.

[0049] The method of forming the sharp corners 111 on the shielding ring 11, as well as their arrangement and number on the shielding ring 11, are not specifically limited in the embodiments of this application. In some embodiments, in order to simplify the manufacturing process and reduce the processing difficulty, the sharp corners 111 can be formed by partially lifting and bending the shielding ring 11 upwards. Since the shielding ring 11 is partially lifted, a through hole 112 is formed at the lifted position. The sharp corners 111 are connected to part of the hole wall of the through hole 112, thus forming an integral structure with the shielding ring 11, which can improve the stability of the structure.

[0050] The more sharp corners 111 are bent out, the better the effect of attracting static electricity. Considering the balance between the number of processing and the effect, this embodiment shows four sharp corners 111, and the four sharp corners 111 are evenly distributed around the light-transmitting part 13 on the shielding ring 11.

[0051] The connection method between the connecting arm 12 and the board body 51 of the PCBA 5 is not limited; for example, it can be connected by soldering or by bonding with conductive adhesive. In some embodiments, such as Figure 2 As shown, a first connecting hole 14 is provided at the first end of the connecting arm 12 away from the shielding ring 11. The plate 51 has multiple second connecting holes, each corresponding to one of the first connecting holes 14 on the first ends of the multiple connecting arms 12. The second connecting holes extend to the side of the plate 51 opposite to the connecting arm 12, and the side of the plate 51 facing the connecting arm 12 has a conductive bonding surface surrounding the second connecting holes. The first end of the connecting arm 12 is tightly fitted to the conductive bonding surface with the first connecting hole 14 facing the second connecting hole, so that the connecting arm 12 and the plate 51 are electrically connected. The connecting arm 12 and the plate 51 are fixed by screws that are sequentially inserted into the second connecting hole and the first connecting hole 14. This fixing method is simple and reliable, ensuring both effective electrical connection and stable mechanical connection.

[0052] The material of the board body 51 of PCBA 5 is generally copper. The surface of the board body 51 corresponding to the first end of the connecting arm 12 is designed with bare copper to form a conductive bonding surface, so that the static electricity attracted by the shielding ring 11 is conducted to the conductive bonding surface through the connecting arm 12, and then conducted to the board body 51 of PCBA 5 through the hole walls of the first connecting hole 14 and the second connecting hole.

[0053] In some embodiments, such as Figure 1 As shown, the housing 3 has a boss 311 opposite to the first end of the connecting arm 12, and the boss 311 has a third connecting hole corresponding to the first connecting hole 14 on the first end of the connecting arm 12. The first end of the connecting arm 12 is recessed towards the side of the plate 51 to avoid the step on the housing 3. Specifically, as shown... Figure 2 As shown, the connecting arm 12 includes a first segment 121 and a second segment 122. One end of the first segment 121 is connected to the shielding ring 11, and the second end of the first segment 121 is connected to the first end of the second segment 122. The second end of the second segment 122 forms the first end of the connecting arm 12 and has a first connecting hole 14. The first segment 121 and the second segment 122 are offset in the axial direction of the shielding ring 11, forming a step between them. The first segment 121 and the shielding ring 11 are basically parallel in the axial direction of the shielding ring 11. The second segment 122 is recessed towards the side closer to the board 51, thereby avoiding the step on the housing 3. The screws that pass through the second connecting hole and the first connecting hole 14 also pass through the third connecting hole, thereby fixing the PCBA 5 and the shielding ring 11 to the housing 3. It can be understood that the third connecting hole should be a threaded hole in order to cooperate with the screws.

[0054] This application adopts a recessed connecting arm 12 structure, which avoids the protrusion 311 on the housing 3, requiring no additional adjustment during installation, and the screw fixing method is simple and reliable. This improves the reliability of the vehicle camera. Compared with the traditional PCBA 5 and housing 3 electroplating method, the cost is reduced. Furthermore, this application improves the anti-static level without changing the main structure and circuit of the vehicle camera, the treatment measures are simple and effective, and the components can be interchanged when multiple models use a similar housing 3.

[0055] The number of connecting arms 12 can be selected and determined according to actual needs. This application embodiment shows two connecting arms 12, which are axially symmetrical (180 degrees apart) about the center of the shielding ring 11 and are located on the outer periphery of the shielding ring 11.

[0056] Optionally, the connecting arm 12 and the shielding ring 11 are integrated into one structure, which not only simplifies the structure but also improves its stability and reliability.

[0057] In some embodiments, the outer surfaces of the shielding ring 11 and the connecting arm 12 may both be provided with an anti-reflective layer to prevent light reflection, thereby reducing light reflection interference with the imaging of the lens 4 and further optimizing the imaging quality of the vehicle camera. The anti-reflective layer can be formed by spraying black paint onto the surfaces of the shielding ring 11 and the connecting arm 12. The black paint can be a conductive paint to avoid affecting the conductivity.

[0058] In some embodiments, such as Figure 3 and Figure 4 As shown, the second protective component 2 includes a base 21 and a current-guiding pin 22. The base 21 is fixed to the board 51 of the PCBA 5, and the current-guiding pin 22 is disposed on the base 21 and extends toward the lens 4. This structure of the second protective component 2 can effectively attract static electricity entering the housing 3, at least preventing static electricity from interfering with the memory 53.

[0059] The base 21 has a large bottom surface, which allows it to be soldered onto the vicinity of the memory 53 on the PCBA 5 using Surface Mount Technology (SMT). This brings the ground near the memory 53 closer to the lens 4, and through a separate ground on the surface of the board 51, static electricity is conducted to the connector 6 on the housing 3 and then discharged, protecting the memory 53 for normal operation. Using SMT to solder the second protective component 2 onto the PCBA 5 enables automated installation, reduces production time, and effectively improves the anti-static rating of the memory 53.

[0060] The electrostatic needle 22 can be a structure that gradually tapers from its first end to its second end. The first end of the electrostatic needle 22 is connected to the base 21, and the second end is a free end. Due to the tip effect, the electrostatic attraction effect is better.

[0061] The base 21 and the lead pin 22 can be integrated into one piece. For example, a lead pin 22 can be bent out from the base 21. The lead pin 22 can be made of brass material with a thickness of about 0.2mm and a height of about 3mm. The second end (top) is rounded and the surface is treated with tin spraying to ensure the reliability of soldering during the SMT reflow process.

[0062] like Figures 5 to 8 As shown, this application embodiment also provides a vehicle-mounted camera, which includes a housing 3, a lens 4, a PCBA 5, and an anti-static structure as described in any of the above embodiments. The anti-static structure is disposed inside the housing 3 and is fixedly connected to the board 51 of the PCBA 5. It is used to conduct the attracted static electricity through the board 51 of the PCBA 5 to the connector 6 on the housing 3 via multiple paths, and then release it.

[0063] The vehicle-mounted camera in this application embodiment can resist ±25kV electrostatic discharge, which meets the requirements of international standards such as ISO 10605 for electrostatic protection of vehicle-mounted electronic equipment.

[0064] like Figure 7 and Figure 8 As shown, the shell 3 includes a first shell portion 31 and a second shell portion 32. The first shell portion 31 is a cylindrical structure with openings at both ends. The second shell portion 32 is located at the first open end of the first shell portion 31 and forms a cavity 33 with the first shell portion 31. (See Figure 32 for details.) Figure 1 PCBA 5 is disposed within cavity 33, and boss 311 is disposed on the inner sidewall of first housing 31, opposite to PCBA 5. Lens 4 is mounted on the second open end of first housing 31, and the tail end of lens 4 extends into cavity 33, forming a space between lens 4 and PCBA 5 for mounting the first protective component 1. Connector 6 is disposed on second housing 32, located within cavity 33, and electrically connected to PCBA 5.

[0065] like Figure 1 As shown, when external electrostatic interference is applied to the lens 4 and conducted into the housing 3, without the first protective component 1 (shielding ring 11) and the second protective component 2 (current-guiding pin 22), the electrostatic discharge breaks down the air to any point on the PCBA 5, causing image signal loss or even damaging electronic components. After adding the shielding ring 11 and current-guiding pin 22, the electrostatic discharge breaks down the air inside the housing 3 from the lens 4 and is attracted by the sharp corner 111 on the gold shielding ring 11. Then, it is conducted through the first connection hole 14 on the connecting arm 12 to the second connection hole on the board body 51 of the PCBA 5. The top surface of the second connection hole is bare copper, and the back is tightly connected to the boss 311 of the first shell part 31 of the housing 3 with screws. The second connection hole is connected to the ground of the PCBA 5, and the ground of the PCBA 5 is connected to the connector 6. The connector 6 releases the electrostatic discharge, thereby protecting the image sensor 52. Alternatively, the electrostatic discharge breaks down the air inside the housing 3 from the lens 4 and is attracted by the current-guiding pin 22. Then, it is conducted through the PCBA 5 to the second connection hole 22 on the first connection hole 31 on the first shell part 31 of the housing 3. The surface of board 51 of 5 is individually grounded, which conducts static electricity to connector 6, and connector 6 discharges the static electricity, thereby protecting memory 53.

[0066] Understandably, the first protective component 1 attracts static electricity entering the housing 3, protecting not only the image sensor 52 from electrostatic interference but also other electronic components, such as the memory 53. Similarly, the second protective component 2 attracts static electricity entering the housing 3, protecting not only the memory 53 from electrostatic interference but also other electronic components, such as the image sensor 52. The first and second protective components work together to ensure the discharge of static electricity from the vehicle camera.

[0067] The vehicle-mounted camera in this embodiment has multiple electrostatic discharge paths, ensuring that even if one path fails, static electricity can still be discharged through other paths, improving reliability. Each path is independently grounded, avoiding concentrated static electricity discharge on a single path and reducing the risk of damage to the PCBA 5.

[0068] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. An anti-static structure for an in-vehicle camera, the in-vehicle camera comprising a housing, a lens disposed on the housing, and a printed circuit board assembly disposed within the housing, characterized in that, The antistatic structure includes: A first protective component, disposed within the housing and located between the lens and the printed circuit board assembly, is used to attract static electricity entering the housing. The first protective component is electrically connected to the board body of the printed circuit board assembly and is used to conduct the attracted static electricity through the board body to the connector on the housing and release it. The second protective component is disposed on the board and close to the memory of the printed circuit board assembly. It is used to attract static electricity located near the memory in the housing and conduct the static electricity through the board to the connector and release it. The first protective component includes a shielding ring and a plurality of connecting arms connected to the outer periphery of the shielding ring. The hollow portion inside the shielding ring faces the lens and forms a light-transmitting portion. The connecting arms are fixed to and electrically connected to the board body of the printed circuit board assembly. The shielding ring has at least one sharp corner protruding toward one side of the lens.

2. The anti-static structure for vehicle-mounted cameras according to claim 1, characterized in that, The sharp corner is formed by partially lifting and bending the shielding ring upwards.

3. The anti-static structure for vehicle-mounted cameras according to claim 1, characterized in that, The first end of the connecting arm away from the shielding ring is provided with a first connecting hole; the plate body is provided with a plurality of second connecting holes respectively corresponding to the first connecting holes on the first ends of the plurality of connecting arms, the second connecting holes extending to the side of the plate body away from the connecting arm, and the side of the plate body facing the connecting arm has a conductive bonding surface surrounding the second connecting hole; the first end of the connecting arm is tightly fitted to the conductive bonding surface with the first connecting hole and the second connecting hole facing each other, so that the connecting arm is electrically connected to the plate body, and the connecting arm and the plate body are fixed by screws that pass through the second connecting hole and the first connecting hole in sequence.

4. The anti-static structure for vehicle-mounted cameras according to claim 3, characterized in that, The first end of the connecting arm is lowered toward one side of the plate to avoid the protrusion on the housing.

5. The anti-static structure for vehicle-mounted cameras according to claim 1, characterized in that, The connecting arms are two in number and are arranged axially symmetrically about the center of the shielding ring on the outer periphery of the shielding ring; and / or The connecting arm and the shielding ring are an integral structure; and / or The outer surfaces of the connecting arm and the shielding ring are provided with an anti-reflective layer to prevent light reflection.

6. The anti-static structure for a vehicle-mounted camera according to claim 1, characterized in that, The second protective component includes a base and a current-guiding pin. The base is fixed to the board body of the printed circuit board assembly, and the current-guiding pin is disposed on the base and extends toward the lens.

7. A vehicle-mounted camera, comprising a housing, a lens, and a printed circuit board assembly, characterized in that, It also includes an antistatic structure for a vehicle-mounted camera as described in any one of claims 1 to 6.

8. The vehicle-mounted camera according to claim 7, characterized in that, The housing includes a first housing portion and a second housing portion; The first housing is a cylindrical structure with open ends. The second housing is located at the first open end of the first housing and forms a cavity with the first housing. The printed circuit board assembly is located in the cavity. The lens is installed at the second open end of the first housing, and the tail end of the lens extends into the cavity and forms a space between the lens and the printed circuit board assembly for installing the first protective component. The second housing is provided with the connector, which is electrically connected to the printed circuit board assembly.

Images