Anti-static vehicle display device

Abstract

The present invention discloses an anti-static vehicle-mounted display device, wherein a housing is provided with an installation window, a transparent baffle is installed in the installation window, a limiting step is provided on the inner edge of the installation window, a liquid crystal screen is located in the housing and abuts against the limiting step, a circuit board is located in the housing and the circuit board is located on the side of the liquid crystal screen away from the transparent baffle, a conductive foam is provided between the circuit board and the liquid crystal screen, and the liquid crystal screen is connected to the circuit board through the conductive foam. Through the above-mentioned optimized anti-static vehicle-mounted display device, a transparent baffle is used instead of a transparent protective film to isolate static electricity to the maximum extent, protect the liquid crystal screen, and prevent the device from being affected by electrostatic discharge, thereby ensuring safe use.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted display, and in particular to an anti-static vehicle-mounted display device. Background Art

[0002] At present, major bus manufacturers have a rigid requirement for on-board display devices: the equipment cannot have any abnormal phenomena (screen brightening, white screen, restart, freeze, etc.) when undergoing electrostatic discharge tests (voltage ±15KV). In order to enable the device to pass the electrostatic discharge test, typical on-board display devices generally consider adding a layer of transparent protective film between the LCD screen and the shell to isolate the impact of static electricity on the display screen. This method can pass electrostatic tests within ±3KV, but as the electrostatic discharge voltage increases, since there cannot be no gap between the isolation layer and the shell, this simple method of adding an isolation layer cannot make the device pass the electrostatic test, and the assembly is more troublesome. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides an anti-static vehicle-mounted display device.

[0004] The present invention provides an anti-static vehicle-mounted display device, comprising: a housing, a liquid crystal screen, a circuit board, and a transparent baffle;

[0005] An installation window is provided on the shell, a transparent baffle is installed in the installation window, a limiting step is provided at the inner edge of the installation window, the LCD screen is located in the shell and abuts against the limiting step, the circuit board is located in the shell and the circuit board is located on the side of the LCD screen away from the transparent baffle, a conductive foam is provided between the circuit board and the LCD screen, and the LCD screen is connected to the circuit board through the conductive foam.

[0006] Preferably, the transparent baffle and the housing are integrally injection molded.

[0007] Preferably, a preset gap is provided between the liquid crystal screen and the transparent baffle.

[0008] Preferably, the housing comprises an upper housing and a lower housing, the mounting window is located on the upper housing, and the liquid crystal screen and the circuit board are mounted on the upper housing.

[0009] Preferably, it also includes a connector, which is installed in the upper shell, the LCD screen is installed on the connector, and an annular boss is provided at the end of the lower shell, which extends into the upper shell and abuts against the connector.

[0010] Preferably, a grounding module is provided on the circuit board, and the conductive foam is connected to the grounding module.

[0011] In the present invention, the proposed anti-static vehicle-mounted display device has an installation window on the shell, a transparent baffle is installed in the installation window, a limiting step is provided on the inner edge of the installation window, a liquid crystal screen is located in the shell and abuts against the limiting step, a circuit board is located in the shell and the circuit board is located on the side of the liquid crystal screen away from the transparent baffle, a conductive foam is provided between the circuit board and the liquid crystal screen, and the liquid crystal screen is connected to the circuit board through the conductive foam. Through the above-mentioned optimized design of the anti-static vehicle-mounted display device, a transparent baffle is used instead of a transparent protective film to isolate static electricity to the maximum extent, protect the liquid crystal screen, and prevent the device from being affected by electrostatic discharge, thereby ensuring safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic structural diagram of an anti-static vehicle-mounted display device. DETAILED DESCRIPTION

[0013] like Figure 1 As shown, Figure 1 The present invention is a schematic structural diagram of an anti-static vehicle-mounted display device.

[0014] Reference Figure 1 The present invention provides an anti-static vehicle-mounted display device, comprising: a housing, a liquid crystal screen 2, a circuit board 3, and a transparent baffle 4;

[0015] An installation window is provided on the shell, and a transparent baffle 4 is installed in the installation window. A limiting step is provided at the inner edge of the installation window. The LCD screen 2 is located in the shell and abuts against the limiting step. The circuit board 3 is located in the shell and the circuit board 3 is located on the side of the LCD screen 2 away from the transparent baffle 4. A conductive foam 5 is provided between the circuit board 3 and the LCD screen 2, and the LCD screen 2 is connected to the circuit board 3 through the conductive foam 5.

[0016] In this embodiment, the proposed anti-static vehicle-mounted display device has an installation window on the shell, a transparent baffle is installed in the installation window, a limiting step is provided on the inner edge of the installation window, the LCD screen is located in the shell and abuts against the limiting step, the circuit board is located in the shell and the circuit board is located on the side of the LCD screen away from the transparent baffle, and a conductive foam is provided between the circuit board and the LCD screen, and the LCD screen is connected to the circuit board through the conductive foam. Through the above-mentioned optimized design of the anti-static vehicle-mounted display device, a transparent baffle is used instead of a transparent protective film to isolate static electricity to the maximum extent, protect the LCD screen, and prevent the device from being affected by electrostatic discharge, ensuring safe use.

[0017] In a specific embodiment, the transparent baffle 4 is integrally injection-molded with the shell, so that there is no gap between the baffle and the shell, thereby isolating static electricity to the maximum extent and protecting the liquid crystal screen.

[0018] In other specific embodiments, a preset gap is provided between the LCD screen 2 and the transparent baffle 4, and air is used as a second layer of barrier to isolate static electricity, thereby further protecting the LCD screen.

[0019] In a specific design of the shell, the shell includes an upper shell 11 and a lower shell 12, the installation window is located on the upper shell 11, and the LCD screen 2 and the circuit board 3 are installed on the upper shell 11, which is convenient for the installation of the LCD screen and the circuit board.

[0020] In a further specific embodiment, a connector 6 is also included, which is installed in the upper shell 11, and the LCD screen 2 is installed on the connector 6. An annular boss is provided at the end of the lower shell 12, which extends into the upper shell 11 and abuts against the connector 6 to ensure the reliability of the installation of the LCD screen and the circuit board.

[0021] In another specific embodiment, a grounding module is provided on the circuit board 3, and the conductive foam 5 is connected to the grounding module. In case static electricity hits the LCD screen, the static electricity can be promptly conducted into the ground through the conductive foam and the grounding module on the circuit board, providing a third layer of protection for the LCD screen.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-static vehicle display device, characterized in that: include: A housing, a liquid crystal screen (2), a circuit board (3), and a transparent baffle (4); An installation window is provided on the shell, a transparent baffle (4) is installed in the installation window, a limiting step is provided on the inner edge of the installation window, the liquid crystal screen (2) is located in the shell and abuts against the limiting step, the circuit board (3) is located in the shell and the circuit board (3) is located on a side of the liquid crystal screen (2) away from the transparent baffle (4), a conductive foam (5) is provided between the circuit board (3) and the liquid crystal screen (2), and the liquid crystal screen (2) is connected to the circuit board (3) via the conductive foam (5); The transparent baffle (4) is integrally injection-molded with the shell; A preset gap is provided between the liquid crystal screen (2) and the transparent baffle (4); A grounding module is provided on the circuit board (3), and the conductive foam (5) is connected to the grounding module; The housing comprises an upper housing (11) and a lower housing (12); the mounting window is located on the upper housing (11); and the liquid crystal screen (2) and the circuit board (3) are mounted on the upper housing (11); The device also includes a connector (6), the connector (6) being mounted in the upper housing (11), the liquid crystal screen (2) being mounted on the connector (6), and an annular boss being provided at the end of the lower housing (12), the annular boss extending into the upper housing (11) and abutting against the connector (6).

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