Circuit board for vehicle-mounted display screen

Abstract

The utility model discloses a circuit board for a vehicle-mounted display screen, which relates to the technical field of circuit boards and comprises a circuit board electrically connected with a display screen panel, the back of the display screen panel is connected with the circuit board through a connecting assembly, and a gap is reserved between the back of the display screen panel and the circuit board. A gas conveying box is fixedly arranged on the side, close to the display screen panel, of the circuit board, a gas conveying hole is formed in the side face of the gas conveying box, and a gas conveying assembly used for conveying gas into the gas conveying box is arranged on one side of the gas conveying box. When the device is used, the micro air pump can convey air filtered by the filtering connector into the air conveying pipe through the air suction pipe and convey the air into the air conveying box through the air conveying pipe, the air guide plate is arranged on the air conveying hole in the side face of the air conveying box, air flow output from the air conveying hole is guided to the inclined downward direction, and therefore the action range is enlarged, and the air conveying efficiency is improved. And the airflow on the back surface of the display screen panel is pushed to move, so that heat generated by the display screen panel and the circuit board is taken away.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board technical field, concretely relates to a circuit board for vehicle display screen. BACKGROUND

[0002] Circuit board, namely printed circuit board (PCB), is an indispensable component in electronic equipment. It is mainly composed of solder pad, via, mounting hole, wire, component and the like, and connects electronic components through conductive path to realize signal transmission and circuit function.

[0003] The circuit board of the vehicle display screen is the core component inside the display screen, responsible for signal processing, image display and the like. The circuit board is usually installed on the back of the vehicle display screen and closely connected with the driving components of the display screen. Since the vehicle display screen needs to consider compactness and aesthetics in design, the internal space is extremely compressed, and the environment of the circuit board is narrow and cramped.

[0004] The above prior art scheme has the following disadvantages: when the vehicle display screen is used, the display screen and the circuit board will generate heat. However, since the space they are in is relatively closed, the heat is difficult to quickly dissipate to the outside. Especially during the summer high temperature period, the sunlight directly strikes the installation position of the vehicle display screen, causing the temperature to accumulate. Such high temperature environment will adversely affect the service life of the vehicle display screen and the circuit board and other electronic components. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a circuit board for vehicle display screen to solve the technical problem that the heat generated by the vehicle display screen and the circuit board in the prior art is difficult to quickly dissipate to the outside, which easily adversely affects the service life of the vehicle display screen and the circuit board and other electronic components.

[0006] The technical problem to be solved by the utility model can be solved by the following technical scheme:

[0007] A circuit board for vehicle display screen, comprising a circuit board electrically connected with a display screen panel, the display screen panel back and the circuit board are connected through a connecting assembly, and there is a gap between the display screen panel back and the circuit board, a gas conveying box is fixedly arranged on the side of the circuit board close to the display screen panel, a gas conveying hole is formed in the side of the gas conveying box, and a gas conveying assembly for conveying gas into the gas conveying box is arranged on one side of the gas conveying box.

[0008] As a further scheme of the utility model: the gas conveying box is longitudinally arranged at the middle position of the circuit board, the gas conveying hole density on one end of the gas conveying box close to the gas conveying assembly is less than that on the other end of the gas conveying box far from the gas conveying assembly, and the gas conveying holes are symmetrically arranged on both sides of the gas conveying box.

[0009] As a further scheme of the utility model: the circuit board is arranged at the upper end of the display screen panel, a gas guide plate is fixedly arranged on the upper side of all the gas conveying holes, and the inclined direction of all the gas guide plates is downward along the extension direction of the gas conveying box.

[0010] As a further scheme of the utility model: a temperature detection chip is arranged between the circuit board and the display screen panel.

[0011] As a further scheme of the utility model: the gas conveying assembly comprises a gas conveying pipe, a gas suction pipe and a micro air pump, one end of the gas conveying pipe is in communication with the gas conveying box, the other end is in communication with the output end of the micro air pump, and one end of the gas suction pipe is in communication with the input end of the micro air pump.

[0012] As a further scheme of the utility model: the other end of the gas suction pipe is connected with a filter joint.

[0013] As a further scheme of the utility model: the filter joint is arranged inside the central air outlet of the automobile.

[0014] As a further scheme of the utility model: edge support plates are fixedly arranged at the upper edge of the circuit board and the two corner positions of the bottom of the circuit board.

[0015] As a further scheme of the utility model: the connecting assembly comprises a connecting block fixedly arranged on the back of the display screen panel, and the connecting block is fixedly connected with the edge support plate.

[0016] As a further scheme of the utility model: the connecting block and the display screen panel and the connecting block and the edge support plate are fixedly connected through heat-conducting silica gel.

[0017] The utility model discloses the beneficial effects of:

[0018] 1, the utility model discloses when using, when the temperature detection chip detects that the display screen panel and circuit board temperature are too high, can start the micro air pump through the control system, the micro air pump is through the gas suction pipe and is delivered to the gas conveying pipe inside with the good gas of filter joint, and is delivered to the gas conveying box inside through the gas conveying pipe, and the gas guide plate is arranged on the gas conveying hole on the side of the gas conveying box, and the airflow output from the gas conveying hole is guided to the oblique downward direction, thereby expanding the scope of action, and the airflow movement on the back of the display screen panel is pushed, and the heat generated by the display screen panel and the circuit board is taken away, so that the cooling effect is realized.

[0019] 2. The utility model discloses a gas conveying box is close to the gas conveying assembly one end's gas conveying hole distribution is relatively sparse, and the gas conveying box is far from the gas conveying assembly one end's gas conveying hole distribution is relatively dense, thereby guaranteeing that the gas conveying hole of upper end and the gas conveying hole of lower end on the gas conveying box exist airflow flow when gas conveying, guarantee the uniformity of airflow flow rate of different positions. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model makes further explanation in combination with the drawings.

[0021] Figure 1 It is the schematic diagram of structure after installation of the utility model,

[0022] Figure 2 It is the schematic diagram of whole structure of the utility model,

[0023] Figure 3 It is Figure 2 The schematic diagram of partial enlargement structure in A place of middle,

[0024] In the drawing: 1, display screen panel, 2, circuit board, 3, connecting block, 4, temperature detection chip, 5, micro air pump, 6, gas conveying pipe, 7, air extraction pipe, 8, filter connector, 9, gas conveying box, 10, gas conveying hole, 11, gas guide plate, 12, edge support plate. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] As Figures 1-3 Indicated, a kind of circuit board for vehicle-mounted display screen, including with the electrically connected display screen panel 1 circuit board 2, as Figure 2 Indicated, circuit board 2 is arranged on the upper end of display screen panel 1, and the edge of circuit board 2 and the bottom two corners of circuit board 2 are fixedly provided with edge support plate 12. The back of display screen panel 1 is connected between circuit board 2 by connecting assembly, and connecting assembly includes the connecting block 3 fixedly set on the back of display screen panel 1, and connecting block 3 is fixedly connected with edge support plate 12. Connecting block 3 and display screen panel 1, connecting block 3 and edge support plate 12 are fixedly connected by heat-conducting silicone, and heat-conducting silicone has the characteristics of high temperature resistance and good heat conduction.

[0027] There is a gap between the back of the display screen panel 1 and the circuit board 2, the circuit board 2 is fixedly arranged with a gas conveying box 9 close to the side of the display screen panel 1, the gas conveying box 9 is longitudinally arranged at the middle position of the circuit board 2, the gas conveying box 9 is provided with a gas conveying hole 10 on the side, the density of the gas conveying hole 10 on the end of the gas conveying box 9 close to the gas conveying assembly is less than that of the gas conveying hole 10 on the end of the gas conveying box 9 away from the gas conveying assembly, and the gas conveying holes 10 are symmetrically arranged on both sides of the gas conveying box 9, so that the gas conveying hole 10 on the upper end of the gas conveying box 9 and the gas conveying hole 10 on the lower end of the gas conveying box 9 both have gas flow.

[0028] All the gas conveying holes 10 are fixedly provided with a gas guide plate 11, and the inclined directions of all the gas guide plates 11 are downwardly inclined along the extension direction of the gas conveying box 9. The gas flow output outward from the gas conveying hole 10 flows obliquely downward under the action of the gas guide plate 11, so as to expand the influence range and maximize the heat carried away from the display screen panel 1 and the circuit board 2.

[0029] The side of the gas conveying box 9 is provided with a gas conveying assembly for conveying gas into the gas conveying box 9. The gas conveying assembly comprises a gas conveying pipe 6, a gas suction pipe 7 and a micro gas pump 5, one end of the gas conveying pipe 6 is in communication with the gas conveying box 9, and the other end is in communication with the output end of the micro gas pump 5. One end of the gas suction pipe 7 is in communication with the input end of the micro gas pump 5, and the other end of the gas suction pipe 7 is connected with a filter joint 8. The micro gas pump 5 conveys the filtered gas of the filter joint 8 into the inside of the gas conveying pipe 6 through the gas suction pipe 7, and then into the inside of the gas conveying box 9 through the gas conveying pipe 6, so as to complete the gas conveying operation. The filter joint 8 is located in the inside of the central air outlet of the automobile, so as to ensure the temperature of the conveyed gas flow within a certain range as much as possible.

[0030] The temperature detection chip 4 is arranged between the circuit board 2 and the display screen panel 1, and can be arranged on the back of the display screen panel 1 or mounted on the circuit board 2. The temperature detection chip 4 detects the temperature at the position of the circuit board 2, and when the temperature exceeds 80℃, the control member starts the micro gas pump 5 to cool the display screen panel 1 and the circuit board 2. The temperature threshold value can also be set according to the needs of those skilled in the art.

[0031] In order to facilitate the understanding of the embodiment of the present scheme by those skilled in the art, the working principle of the embodiment of the present scheme will be described in combination with a specific application scenario:

[0032] When the temperature detection chip 4 detects that the display screen panel 1 and the circuit board 2 are too high in temperature, the micro air pump 5 can be started through the control system, the micro air pump 5 delivers the filtered gas in the filtering joint 8 to the inside of the gas conveying pipe 6 through the air suction pipe 7, and the gas is conveyed to the inside of the gas conveying box 9 through the gas conveying pipe 6, the gas conveying hole 10 on the side of the gas conveying box 9 is provided with the air guide plate 11, the air flow output from the gas conveying hole 10 is guided to the obliquely downward direction, so that the action range is expanded, the air flow movement on the back of the display screen panel 1 is pushed, the heat generated by the display screen panel 1 and the circuit board 2 is taken away, and the cooling effect is realized;

[0033] The gas conveying holes 10 on the side of the gas conveying box 9 close to one end of the gas conveying assembly are distributed sparsely, the gas conveying holes 10 on the side of the gas conveying box 9 far from one end of the gas conveying assembly are densely distributed, so that when the gas is conveyed, the gas conveying hole 10 on the upper end of the gas conveying box 9 and the gas conveying hole 10 on the lower end of the gas conveying box 9 all have the air flow flowing, and the uniformity of the air flow speed at different positions is ensured.

[0034] The above has carried out the detailed explanation to one embodiment of the utility model, but the content described can only be the preferred embodiment of the utility model, and cannot be considered for limiting the implementation scope of the utility model. All equivalent changes and improvements made according to the application scope of the utility model should still belong to the patent coverage scope of the utility model.

Claims

1. A circuit board for a vehicle display screen, comprising a circuit board (2) electrically connected to a display panel (1), characterized in that The display screen panel (1) is connected with the circuit board (2) through a connecting assembly, and there is a gap between the back of the display screen panel (1) and the circuit board (2), and the circuit board (2) is fixedly arranged with a gas conveying box (9) close to the side of the display screen panel (1), the gas conveying box (9) is provided with a gas conveying hole (10) on the side, and the gas conveying box (9) is provided with a gas conveying assembly for conveying gas into the gas conveying box (9).

2. The circuit board for a vehicle display screen of claim 1, wherein, The gas conveying box (9) is longitudinally arranged at the middle position of the circuit board (2), the density of the gas conveying hole (10) on the end of the gas conveying box (9) close to the gas conveying assembly is less than that on the end of the gas conveying box (9) away from the gas conveying assembly, and the gas conveying holes (10) are symmetrically arranged on both sides of the gas conveying box (9).

3. The circuit board for a vehicle display screen of claim 1, wherein, The circuit board (2) is arranged at the upper end of the display screen panel (1), and the upper sides of all the gas conveying holes (10) are fixedly provided with a gas guide plate (11), and the inclined directions of all the gas guide plates (11) are downwardly inclined along the extension direction of the gas conveying box (9).

4. The circuit board for a vehicle display screen of claim 1, wherein, The circuit board (2) and the display screen panel (1) are provided with a temperature detection chip (4).

5. The circuit board for a vehicle display screen of claim 1, wherein, The gas conveying assembly comprises a gas conveying pipe (6), a gas suction pipe (7) and a micro gas pump (5), one end of the gas conveying pipe (6) is communicated with the gas conveying box (9), the other end is communicated with the output end of the micro gas pump (5), and one end of the gas suction pipe (7) is communicated with the input end of the micro gas pump (5).

6. The circuit board for a vehicle display screen of claim 5, wherein, The other end of the gas suction pipe (7) is connected with a filter joint (8).

7. The circuit board for a vehicle display screen of claim 6, wherein, The filter joint (8) is located in the central air outlet of the automobile.

8. The circuit board for a vehicle display screen of claim 1, wherein, The upper edge of the circuit board (2) and the two corner positions of the bottom of the circuit board (2) are fixedly provided with an edge supporting plate (12).

9. The circuit board for a vehicle display screen of claim 8, wherein, The connecting assembly comprises a connecting block (3) fixedly arranged on the back of the display screen panel (1), and the connecting block (3) is fixedly connected with the edge supporting plate (12).

10. The circuit board for a vehicle display screen of claim 9, wherein, The connecting block (3) and the display screen panel (1) and the connecting block (3) and the edge supporting plate (12) are fixedly connected through heat-conducting silica gel.

Images