Signal transmission protection assembly, vehicle-mounted screen and vehicle

Abstract

The utility model discloses a signal transmission protection assembly, a vehicle-mounted screen and a vehicle. The signal transmission protection assembly comprises a metal shell; the printed circuit board is arranged in the metal shell; the coaxial connector is used for connecting a coaxial line, and the coaxial connector is arranged on the printed circuit board; the deserializer is arranged on the printed circuit board, the printed circuit board is provided with a signal wire, one end of the signal wire is connected with the deserializer, and the other end of the signal wire is connected with the coaxial connector; and the first electrostatic discharge piece is arranged on the printed circuit board and is connected with the metal shell. According to the utility model, by arranging the first electrostatic discharge piece at the periphery of the signal wire, the first electrostatic discharge piece is utilized to guide static electricity, so that the static electricity is prevented from interfering with signals, the probability of problems such as flicker, image blurring or interference stripes of the screen is reduced, and the stability of the screen is improved.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and in particular to a signal transmission protection component, a vehicle screen, and a vehicle. Background Technology

[0002] As electric vehicles become increasingly intelligent, the number of electronic devices inside the vehicle is constantly increasing, especially the widespread use of screens. As a key interactive component in electric vehicles, screens not only serve as a communication bridge between the driver and passengers, but also, with the improvement of intelligence, have become an important carrier for in-vehicle information display and control. In modern electric vehicles, video signal transmission typically uses coaxial cable technology. Coaxial cable is widely used in video signal transmission links due to its high-frequency signal transmission capability and good anti-interference performance.

[0003] However, in the complex electromagnetic environment of electric vehicles, the electromagnetic interference (EMI) generated by in-vehicle electronic equipment has become a significant hidden danger affecting signals. Especially during high-speed driving or charging, the vehicle's high-power systems such as batteries and motors generate strong electromagnetic fields. These electromagnetic waves and electrical noises often couple and interfere with various electronic devices within the vehicle, and in severe cases, can even affect the normal display effect of the screen. Electrostatic interference is particularly problematic. Static electricity is a common electrical phenomenon in electric vehicles; voltage changes and charge accumulation can lead to electromagnetic interference in in-vehicle electrical equipment. When static electricity is present in the vehicle, it can easily couple to the coaxial cable through the vehicle body, grounding system, or other lines, and then be conducted to the printed circuit board (PCB), affecting the quality of high-speed signals on the PCB, and consequently affecting the transmission quality of video signals, causing problems such as screen flickering, image blurring, or interference stripes. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a signal transmission protection component that reduces the probability of screen flickering, image blurring, or interference stripes.

[0005] A signal transmission protection component according to an embodiment of the present invention includes: a metal housing; a printed circuit board disposed within the metal housing; a coaxial connector for connecting a coaxial cable, the coaxial connector being disposed on the printed circuit board; a deserializer disposed on the printed circuit board, the printed circuit board having signal traces, one end of the signal traces being connected to the deserializer and the other end being connected to the coaxial connector; and a first electrostatic discharge device disposed on the printed circuit board and connected to the metal housing.

[0006] According to the signal transmission protection component of this utility model embodiment, by setting a first electrostatic discharge device around the signal trace, the first electrostatic discharge device guides the electrostatic discharge, avoiding electrostatic interference with the signal, reducing the probability of problems such as screen flickering, image blurring or interference stripes, thereby improving the stability of the screen.

[0007] In some embodiments, there are at least two first electrostatic discharge devices, which are disposed on opposite sides of the signal trace, and the at least two first electrostatic discharge devices together define the protection space, and the signal trace is disposed within the protection space.

[0008] In some embodiments, the first electrostatic discharge element is configured as a first electrostatic discharge strip, which extends along the extension direction of the signal trace.

[0009] In some embodiments, a plurality of the first electrostatic discharge bars are disposed on the same side of the signal trace, and the plurality of the first electrostatic discharge bars are spaced apart along the extension direction of the signal trace.

[0010] In some embodiments, the first electrostatic discharge device is configured as a first electrostatic discharge point, and a plurality of the first electrostatic discharge points are arranged sequentially at intervals along the extension direction of the signal trace.

[0011] In some embodiments, the first static discharge component is integrally formed on the metal housing.

[0012] In some embodiments, the material of the first electrostatic discharge component includes conductive foam, and the metal housing includes: a first housing having a clearance hole, the coaxial connector passing through the clearance hole; and a second housing, the second housing and the first housing together defining a receiving space for accommodating the printed circuit board.

[0013] In some embodiments, the printed circuit board is provided with a second electrostatic discharge member on the side facing the first housing, the second electrostatic discharge member being configured to surround the coaxial connector and connected to the first housing.

[0014] In some embodiments, the printed circuit board is provided with a connection portion that connects to the coaxial connector, and a third electrostatic discharge device is provided on the side of the connection portion facing the second housing, the third electrostatic discharge device being connected to the second housing.

[0015] The vehicle screen according to an embodiment of the present invention includes the signal transmission protection component described above.

[0016] According to the vehicle screen of this utility model embodiment, by setting a first electrostatic discharge device around the signal line, the first electrostatic discharge device guides the electrostatic discharge, avoiding electrostatic interference with the signal, reducing the probability of problems such as screen flickering, image blurring or interference stripes, thereby improving the stability of the screen.

[0017] The vehicle according to an embodiment of the present invention includes the above-described in-vehicle screen.

[0018] According to the vehicle screen of this utility model embodiment, by setting a first electrostatic discharge device around the signal line, the first electrostatic discharge device guides the electrostatic discharge, avoiding electrostatic interference with the signal, reducing the probability of problems such as screen flickering, image blurring or interference stripes, thereby improving the stability of the screen.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a top view of the signal transmission protection component in an embodiment of this utility model;

[0022] Figure 2 This is a side view of the signal transmission protection component in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the first electrostatic discharge strip in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the first electrostatic discharge point in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the third electrostatic discharge component in an embodiment of this utility model.

[0026] Figure label:

[0027] 100. Signal transmission protection components;

[0028] 10. Metal casing; 11. First casing; 111. Clearance hole; 12. Second casing; 13. Accommodation space;

[0029] 20. Printed circuit board; 21. Signal trace; 22. Connector;

[0030] 30. Coaxial connector; 40. Deserializer; 50. First electrostatic discharge component; 51. Protective space; 52. First electrostatic discharge strip; 53. First electrostatic discharge point;

[0031] 60. Second static discharge component; 70. Third static discharge component. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements 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 utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of the same feature, used to distinguish and describe features, without any order or distinction of importance.

[0035] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The signal transmission protection component 100 of this utility model embodiment is described below with reference to the accompanying drawings.

[0038] Reference Figure 1 , Figure 2According to an embodiment of the present invention, a signal transmission protection component 100 includes: a metal housing 10, a printed circuit board 20, a coaxial connector 30, a deserializer 40, and a first electrostatic discharge component 50.

[0039] A printed circuit board 20 is housed within a metal housing 10. A coaxial connector 30 is used to connect a coaxial cable and is located on the printed circuit board 20. A deserializer 40 is located on the printed circuit board 20, which has signal traces 21. One end of the signal traces 21 is connected to the deserializer 40, and the other end is connected to the coaxial connector 30. A first electrostatic discharge device 50 is located on the printed circuit board 20 and connected to the metal housing 10.

[0040] The printed circuit board 20 is housed within the metal casing 10. Also known as a printed circuit board or printed wire board, PCB (Printed Circuit Board) or PWB (Printed Wire Board) is the support structure for electronic components. Metal conductors serve as signal traces 21 connecting these components. A coaxial connector 30 is mounted on the printed circuit board 20. This connector connects a coaxial cable to the printed circuit board 20, allowing signal transmission between them. A deserializer 40 is also mounted on the printed circuit board 20. This deserializer converts serial data into parallel data. In the signal transmission protection assembly 100, the deserializer 40 converts the serially transmitted video signal into parallel data suitable for screen processing.

[0041] As electric vehicles become increasingly intelligent, the number of electronic devices inside the vehicle is constantly increasing, especially the widespread use of screens. As a key interactive component in electric vehicles, screens not only serve as a communication bridge between the driver and passengers, but also, with the improvement of intelligence, have become an important carrier for in-vehicle information display and control. In modern electric vehicles, video signal transmission typically uses coaxial cable technology. Coaxial cable is widely used in video signal transmission links due to its high-frequency signal transmission capability and good anti-interference performance.

[0042] However, in the complex electromagnetic environment of electric vehicles, the electromagnetic interference (EMI) generated by in-vehicle electronic devices poses a significant threat to signal transmission. Especially during high-speed driving or charging, the vehicle's high-power systems, such as batteries and motors, generate strong electromagnetic fields. These electromagnetic waves and electrical noises often couple and interfere with various electronic devices within the vehicle, potentially affecting the screen's display quality. Electrostatic interference, in particular, is a common electrical phenomenon in electric vehicles. Voltage changes and charge accumulation can lead to EMI in in-vehicle electrical equipment. When static electricity is present in the vehicle, it can easily couple to the coaxial cable through the vehicle body, grounding system, or other wiring, affecting the transmission quality of video signals and causing problems such as screen flickering, blurred images, or interference stripes.

[0043] Extensive experimental research has revealed that static electricity on the coaxial cable can be conducted to the printed circuit board, interfering with the signal traces between the coaxial connector and the deserializer, resulting in problems such as screen flickering, blurred images, or interference stripes.

[0044] In this embodiment of the present invention, by providing a first electrostatic discharge device 50, the first electrostatic discharge device 50 guides static electricity to the metal housing 10. The first electrostatic discharge device 50 provides a smaller impedance path and guides it to the larger volume of the metal housing 10, avoiding electrostatic interference with the signal transmitted by the signal trace 21, reducing the probability of problems such as screen flickering, image blurring or interference stripes, thereby improving the stability of the screen.

[0045] In some specific embodiments, there are two first electrostatic discharge elements 50, which are respectively disposed on both sides of the signal trace 21 to completely isolate the signal trace 21 from the outside. In other specific embodiments, the first electrostatic discharge elements 50 are dot-shaped or block-shaped, and multiple first electrostatic discharge elements 50 are arranged sequentially and at intervals on both sides of the first electrostatic discharge element 50 to guide static electricity.

[0046] Specifically, signal line 21 is a GMSL signal line (Gigabit Multimedia Serial Link), which enables high-bandwidth, low-latency multimedia data transmission.

[0047] Specifically, the metal casing 10 is grounded, which further improves the discharge effect.

[0048] According to the signal transmission protection component 100 of this utility model embodiment, by setting a first electrostatic discharge component 50 around the signal trace 21, the first electrostatic discharge component 50 guides the electrostatic discharge, avoids electrostatic interference with the signal, reduces the probability of problems such as screen flickering, image blurring or interference stripes, thereby improving the stability of the screen.

[0049] Reference Figure 1 , Figure 2 In some embodiments, there are at least two first electrostatic discharge elements 50, which are disposed on opposite sides of the signal trace 21. These at least two first electrostatic discharge elements 50 together define a protective space 51, within which the signal trace 21 is located. By providing multiple first electrostatic discharge elements 50 on opposite sides of the signal trace 21, with the signal trace 21 situated within the protective space 51 of the two first electrostatic discharge elements 50, the first electrostatic discharge elements 50 on both sides guide static electricity, increasing the influence range and improving operational stability.

[0050] Reference Figure 3 In some embodiments, the first electrostatic discharge element 50 is configured as a first electrostatic discharge strip 52, which extends along the extension direction of the signal trace 21. By configuring the first electrostatic discharge element 50 as a strip and the first electrostatic discharge strip 52 extending along the extension direction of the signal trace 21, static electricity is effectively guided, the influence range is increased, and thus the operational stability is further improved.

[0051] In some specific embodiments, the first electrostatic discharge strip 52 on one side of the signal trace 21 extends from the coaxial connector 30 to the deserializer 40; in other specific embodiments, multiple first electrostatic discharge strips 52 are provided on one side of the signal trace 21, and the multiple first electrostatic discharge strips 52 are arranged sequentially along the extension direction of the signal trace 21.

[0052] Reference Figure 3 In some embodiments, multiple first electrostatic discharge strips 52 are disposed on the same side of the signal trace 21, and the multiple first electrostatic discharge strips 52 are spaced apart along the extension direction of the signal trace 21. By setting multiple first electrostatic discharge strips 52 spaced apart along the extension direction of the signal trace 21, static electricity is guided by multiple first electrostatic discharge strips 52, and the overall volume of the first electrostatic discharge strips 52 is reduced, thereby reducing costs.

[0053] Reference Figure 4 In some embodiments, the first electrostatic discharge element 50 is configured as a first electrostatic discharge point 53, and multiple first electrostatic discharge points 53 are arranged sequentially at intervals along the extension direction of the signal trace 21. By configuring the first electrostatic discharge element 50 as a first electrostatic discharge point 53, and using the point-like first electrostatic discharge point 53 to guide static electricity, and with multiple first electrostatic discharge points 53 arranged sequentially at intervals along the extension direction of the signal trace 21, the overall volume and weight are significantly reduced while effectively guiding static electricity, thus lowering the overall cost.

[0054] In some embodiments, the material of the first static discharge element 50 is a conductive material, such as a metal.

[0055] In some embodiments, the first static discharge component 50 is integrally formed into the metal housing 10. By providing that the first static discharge component 50 is integrally formed into the metal housing 10, the number of parts is reduced, and assembly is facilitated.

[0056] In the above scheme, the first static discharge component 50 is integrally formed on the metal housing 10, which can also be understood as the metal housing 10 being directly pressed onto the printed circuit board 20.

[0057] Reference Figure 1 , Figure 2 In some embodiments, the material of the first static discharge component 50 includes conductive foam, and the metal housing 10 includes a first housing 11 and a second housing 12.

[0058] The first housing 11 has a clearance hole 111, and the coaxial connector 30 passes through the clearance hole 111. The second housing 12 and the first housing 11 together define a receiving space 13 for accommodating the printed circuit board 20.

[0059] In the above scheme, conductive foam is installed on the printed circuit board 20. The conductive foam has conductivity and guides static electricity to the metal housing 10. At the same time, the metal housing 10 is divided into a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are connected to form a receiving space 13 to accommodate the printed circuit board 20. The overall structure facilitates transportation and storage and reduces the overall cost.

[0060] Specifically, the second shell 12 is a backlight casting, the first shell 11 is a metal shell, and the backlight casting is connected to the metal shell.

[0061] Reference Figures 1 to 4 In some embodiments, a second electrostatic discharge element 60 is provided on the side of the printed circuit board 20 facing the first housing 11. The second electrostatic discharge element 60 is configured to surround the coaxial connector 30 and is connected to the first housing 11. That is, by adding a second electrostatic discharge element 60 to the first electrostatic discharge element 50, and the second electrostatic discharge element 60 surrounding the coaxial connector 30 and being disposed on the side of the printed circuit board 20 facing the first housing 11, the probability of signal interference is further reduced and the working stability of the screen is improved.

[0062] Specifically, the second static discharge component 60 can be constructed as a strip or as a dot; at the same time, the material of the second static discharge component 60 includes conductive foam, conductive metal, etc.

[0063] Reference Figure 2 , Figure 5In some embodiments, the printed circuit board 20 is provided with a connecting portion 22, which is connected to a coaxial connector 30. A third electrostatic discharge member 70 is provided on the side of the connecting portion 22 facing the second housing 12, and the third electrostatic discharge member 70 is connected to the second housing 12. That is, a third electrostatic discharge member 70 is added on the basis of the first electrostatic discharge member 50. The third electrostatic discharge member 70 surrounds the connecting portion 22 and is provided on the side of the connecting portion 22 facing the second housing 12, which further reduces the probability of signal interference and improves the working stability of the screen.

[0064] Specifically, the third static discharge component 70 can be constructed as a strip or as a dot; at the same time, the material of the third static discharge component 70 includes conductive foam, conductive metal, etc.

[0065] The vehicle screen according to an embodiment of the present invention includes the signal transmission protection component 100 described above.

[0066] According to the vehicle screen of this utility model embodiment, by setting a first electrostatic discharge component 50 around the signal line 21, the first electrostatic discharge component 50 guides the electrostatic discharge, avoids electrostatic interference with the signal, reduces the probability of problems such as screen flickering, image blurring or interference stripes, and thus improves the stability of the screen.

[0067] In some specific embodiments, the vehicle screen also includes a glass component disposed on the side of the backlight casting away from the metal housing.

[0068] The vehicle according to an embodiment of the present invention includes the above-described in-vehicle screen.

[0069] According to the vehicle screen of this utility model embodiment, by setting a first electrostatic discharge device around the signal line, the first electrostatic discharge device guides the electrostatic discharge, avoiding electrostatic interference with the signal, reducing the probability of problems such as screen flickering, image blurring or interference stripes, thereby improving the stability of the screen.

[0070] Other configurations and operations of the signal transmission protection component 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0071] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. 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.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A signal transmission protection component, characterized in that, include: Metal casing (10); A printed circuit board (20) is disposed inside the metal housing (10); A coaxial connector (30) is provided on the printed circuit board (20) for connecting a coaxial cable. A serializer (40) is provided on the printed circuit board (20). The printed circuit board (20) is provided with signal traces (21). One end of the signal traces (21) is connected to the serializer (40), and the other end is connected to the coaxial connector (30). A first electrostatic discharge device (50) is disposed on the printed circuit board (20) and connected to the metal housing (10).

2. The signal transmission protection component according to claim 1, characterized in that, There are at least two first electrostatic discharge devices (50), and at least two first electrostatic discharge devices (50) are disposed on opposite sides of the signal trace (21). The at least two first electrostatic discharge devices (50) together define a protection space (51), and the signal trace (21) is disposed within the protection space (51).

3. The signal transmission protection component according to claim 2, characterized in that, The first electrostatic discharge component (50) is constructed as a first electrostatic discharge strip (52), which extends along the extension direction of the signal trace (21).

4. The signal transmission protection component according to claim 3, characterized in that, Multiple first electrostatic discharge strips (52) are disposed on the same side of the signal trace (21), and multiple first electrostatic discharge strips (52) are spaced apart along the extension direction of the signal trace (21).

5. The signal transmission protection component according to claim 2, characterized in that, The first electrostatic discharge device (50) is configured as a first electrostatic discharge point (53), and a plurality of the first electrostatic discharge points (53) are arranged sequentially at intervals along the extension direction of the signal trace (21).

6. The signal transmission protection component according to claim 2, characterized in that, The first static discharge component (50) is integrally formed on the metal shell (10).

7. The signal transmission protection component according to any one of claims 1 to 6, characterized in that, The material of the first static discharge component (50) includes conductive foam, and the metal housing (10) includes: The first housing (11) has a clearance hole (111) and the coaxial connector (30) passes through the clearance hole (111). The second shell (12) together with the first shell (11) defines a receiving space (13) for accommodating the printed circuit board (20).

8. The signal transmission protection component according to claim 7, characterized in that, The printed circuit board (20) has a second electrostatic discharge device (60) on the side facing the first housing (11). The second electrostatic discharge device (60) is configured to surround the coaxial connector (30) and is connected to the first housing (11).

9. The signal transmission protection component according to claim 7, characterized in that, The printed circuit board (20) is provided with a connecting part (22), which is connected to the coaxial connector (30). The connecting part (22) is provided with a third static discharge component (70) on the side facing the second housing (12), which is connected to the second housing (12).

10. A vehicle-mounted screen, characterized in that, Includes the signal transmission protection component as described in any one of claims 1 to 9.

11. A vehicle, characterized in that, Includes the vehicle screen as described in claim 10.

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