Vehicle-mounted anti-fog lens

Abstract

The invention provides a vehicle-mounted anti-fog lens. The vehicle-mounted anti-fog lens comprises a circuit board, a base and a lens, the circuit board is located at the bottom and used for bearing a chip required by the camera; the base is located on the circuit board and fixedly connected with the circuit board through bolts. The lens is positioned above the base and is fixedly connected with the base through glue; a chip and a lens are carried in the base to form a space for camera shooting; a positioning column is arranged at the bottom of the base, a positioning pin hole is formed in the circuit board, and the positioning column is matched with the positioning pin hole and used for positioning the position of the base on the circuit board. According to the vehicle-mounted anti-fog lens provided by the invention, the arranged positioning pin holes are connected with the inner hole of the base, the clearance fit between the positioning columns and the positioning pin holes is utilized to reserve the clearance to communicate the inside and the outside of the base, and the original closed space is changed into a breathable space, so that the heat exchange during heat dissipation of the chip is improved, and the heat dissipation efficiency is improved. The risk of fogging of the lens is reduced, and the upgrading cost is reduced while the structure of the camera is not changed.

Description

Technical Field

[0001] The invention relates to an anti-fog lens for vehicles. Background Art

[0002] At present, in order to prevent driver fatigue and accidents, detection cameras are installed in the vehicle cab to record and remind the driver's seat to ensure driving safety. However, for safety reasons, the camera must have a fully enclosed structure to prevent lens and other parts from being shot at the driver in the event of a high-speed collision, causing injury.

[0003] However, the camera is assembled in a closed space by a lens, a circuit board and a base 2. The chip on the circuit board needs to work continuously, which will inevitably cause the circuit board to heat up. The continuous heat in the closed space will cause fog on the lens, affecting the use of the lens and being difficult to eliminate. Therefore, it greatly affects the use of the camera. If a cooling and defogging device is specially designed and installed for the camera, the cost of the camera will be greatly increased, which does not meet market demand. Excessive changes to its structure will affect the uniformity of the camera installation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an anti-fog lens for a vehicle, which utilizes the original structure to provide a ventilation channel for the camera without changing the internal structure of the camera, and does not need to rearrange the ventilation holes, thereby realizing the ventilation structure inside the camera and reducing the possibility of fogging.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: A vehicle-mounted anti-fog lens comprises a circuit board, a base and a lens; the circuit board has a chip and several positioning pin holes arranged on the circuit board; the chip is used to control the lens and is electrically connected to the circuit board; the base is located on the circuit board and connected to the circuit board, and the base and the circuit board are connected to each other through the positioning pin holes; the lens is located above the base and is fixedly connected to the base; the base has a hollow space, and several positioning columns are arranged on both sides of the hollow space, and several of the positioning columns cooperate with the positioning pin holes to fix the position of the base on the circuit board; wherein the hollow space of the base is connected to the outside of the bottom of the base through several positioning pin holes on the circuit board, and the gas circulation inside and outside the hollow space is realized by connecting to the external space, thereby playing a role in cooling and reducing fog.

[0006] Furthermore, several of the positioning pin holes are located on the circuit board and pass through the circuit board, wherein the position of each of the positioning pin holes partially overlaps with the hollow space of the base and has a gap, and the gap is used to connect the hollow space and the external space of the base.

[0007] Furthermore, the positioning columns and positioning pin holes correspond to each other, and at least two are provided, which are symmetrically distributed on the base and the circuit board; multiple positioning columns and positioning pins can improve the position accuracy between the base and the circuit board, while increasing the number of gaps, thereby improving the heat dissipation effect.

[0008] Furthermore, the gap size between the positioning column and the positioning pin hole is not less than 0.05 millimeters (mm), which can not only realize the positioning function, but also leave enough channel gap to facilitate production and processing and lens heat dissipation.

[0009] Furthermore, the chip is located in the hollow space of the base, the positioning pin holes are distributed on both sides of the chip, and are connected to the outside of the base through the hollow space. The positioning pin holes are located close to the hollow space, so that the gap can be naturally formed after assembly to achieve communication with the outside of the base.

[0010] Furthermore, the lens is fixed to the base by glue, and the focal position of the shooting is focused with the center of the base, so that the shooting position of the lens can be maintained and the base is prevented from affecting the use of the lens during installation.

[0011] Furthermore, the base is provided with an assembly hole, which cooperates with the circuit board, and is assembled by bolts passing through the assembly hole. The circuit board and the base form a detachable fixed connection, which facilitates the position adjustment and assembly between the base and the circuit board, and reduces the impact of inaccurate positioning under fixed assembly.

[0012] Compared with the prior art, the present invention provides an anti-fog lens for vehicle use, which connects the arranged positioning pin hole with the hollow space of the base, and utilizes the gap between the positioning column and the positioning pin hole to leave a channel connecting the inside and outside of the base, thereby changing the original enclosed space into a breathable space, thereby improving the heat exchange during chip heat dissipation, reducing the risk of lens fogging, and reducing the cost of upgrading without changing the camera structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 An exploded view of the structure of the invention is shown.

[0014] Attached Figure 2 A front view of the present invention is shown.

[0015] Attached Figure 3 An AA cross-sectional view of the present invention is shown.

[0016] Among them: 1. Circuit board, 2. Base, 3. Lens, 4. Chip, 5. Positioning column, 6. Positioning pin hole, 7. Assembly hole, 8. Hollow space. DETAILED DESCRIPTION

[0017] In one embodiment, Figure 1-3 As shown, an anti-fog lens 3 for vehicle use comprises a circuit board 1, a base 2 and a lens 3; the circuit board 1 has a chip 4 and several positioning pin holes 6 arranged on the circuit board 1; the chip 4 is used to control the lens 3 and is electrically connected to the circuit board 1; the base 2 is located on the circuit board 1 and connected to the circuit board 1, and the base 2 and the circuit board 1 are connected to each other through the positioning pin holes 6; the lens 3 is located above the base 2 and is fixedly connected to the base 2; the base 2 has a hollow space 8, and several positioning columns 5 are arranged on both sides of the hollow space 8, and several of the positioning columns 5 cooperate with the positioning pin holes 6 to fix the position of the base 2 on the circuit board 1; wherein, the hollow space 8 of the base 2 is connected to the outside of the bottom of the base 2 through the several positioning pin holes 6 on the circuit board 1, and the gas circulation between the inside and outside of the hollow space 8 is realized by connecting the external space, thereby playing a role in cooling and reducing fog.

[0018] Furthermore, several of the positioning pin holes 6 are located on the circuit board 1 and pass through the circuit board 1, wherein the position of each of the positioning pin holes 6 partially overlaps with the hollow space 8 of the base 2 and has a gap, and the gap is used to connect the hollow space 8 and the external space of the base 2.

[0019] Furthermore, the positioning columns 5 and the positioning pin holes 6 correspond to each other, and at least two are provided, which are symmetrically distributed on the base 2 and the circuit board 1; the plurality of positioning columns 5 and positioning pins can improve the position accuracy between the base 2 and the circuit board 1, while increasing the number of gaps, thereby improving the heat dissipation effect.

[0020] Furthermore, the gap size between the positioning column 5 and the positioning pin hole 6 is not less than 0.05 millimeters (mm), which can not only realize the positioning function, but also leave enough channel gap to facilitate production and processing and heat dissipation of the lens 3.

[0021] Furthermore, the chip 4 is located in the hollow space 8 of the base 2, and the positioning pin holes 6 are distributed on both sides of the chip 4, which is connected to the outside of the base 2 through the hollow space 8. The positioning pin holes 6 are located close to the hollow space 8, so that the gap can be naturally formed after assembly to achieve communication with the outside of the base 2.

[0022] Furthermore, the lens 3 is fixed to the base 2 by glue, and the focal position of the shooting is focused with the center of the base 2, so that the shooting position of the lens 3 can be maintained to prevent the base 2 from affecting the use of the lens 3 during installation.

[0023] Furthermore, the base 2 is provided with an assembly hole 7, which cooperates with the circuit board 1 and is assembled by bolts passing through the assembly hole 7. The circuit board 1 and the base 2 form a detachable fixed connection, which facilitates the position adjustment and assembly between the base 2 and the circuit board 1 and reduces the impact of inaccurate positioning under fixed assembly.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than a limiting technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. An anti-fog lens for vehicle, characterized in that: It includes a circuit board, a base and a lens; the circuit board has a chip and several positioning pin holes arranged on the circuit board; the base is located on the circuit board and connected to the circuit board; the lens is located above the base and fixedly connected to the base; the base has a hollow space, and several positioning columns are arranged on both sides of the hollow space, and several positioning columns and positioning pin holes cooperate with each other to fix the position of the base on the circuit board; wherein the hollow space of the base is connected to the outside of the bottom of the base through several positioning pin holes on the circuit board.

2. The anti-fog lens for vehicle use according to claim 1, characterized in that: A plurality of positioning pin holes are located on the circuit board and pass through the circuit board, wherein the position of each positioning pin hole partially overlaps with the hollow space of the base and has a gap.

3. The anti-fog lens for vehicle use according to claim 1, characterized in that: The positioning columns and positioning pin holes correspond to each other, and at least two of them are provided and symmetrically distributed on the base and the circuit board.

4. The anti-fog lens for vehicle use according to claim 1, characterized in that: The gap size between the positioning column and the positioning pin hole is not less than 0.05 millimeters (mm).

5. The anti-fog lens for vehicle use according to claim 1, characterized in that: The chip is located in the hollow space of the base, and the positioning pin holes are distributed on both sides of the chip and are connected to the outside of the base through the hollow space.

6. The anti-fog lens for vehicle use according to claim 1, characterized in that: The lens is fixed on the base by glue, and the focal position of the lens is focused on the center of the base.

7. The anti-fog lens for vehicle use according to claim 1, characterized in that: The base is provided with an assembly hole, which cooperates with the circuit board, and is assembled by bolts penetrating the assembly hole, so that the circuit board and the base form a detachable fixed connection.

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