Heat dissipation structure of HUD liquid crystal display screen

Abstract

The utility model discloses a heat dissipation structure of an HUD liquid crystal display screen, which comprises a backlight module, a frame of the backlight module is composed of an upper iron stand and a lower iron stand, the upper iron stand and the lower iron stand are buckled and assembled through bayonets on the periphery, a display screen is arranged between the upper iron stand and the lower iron stand, and the display screen is connected with the backlight module. An upper radiation heat dissipation coating used for heat dissipation is arranged on the side, away from the lower iron frame, of the upper iron frame, and a lower radiation heat dissipation coating used for heat dissipation is arranged on the side, away from the upper iron frame, of the lower iron frame. The heat dissipation structure has the effect that the heat dissipation capability of the HUD is improved, so that the HUD cannot be seriously heated to cause damage during highlight display.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, in particular to a heat dissipation structure of a HUD liquid crystal display screen. Background Art

[0002] The head-up display (HUD) of a car needs to project the display screen onto the front windshield so that it can be clearly seen under strong light, so that the driver can obtain vehicle driving information based on the HUD. The brightness of the HUD display screen is usually required to be several times higher than that of ordinary displays. The high-brightness display of the HUD will bring high power consumption and high heat, and the small space of the HUD poses a great challenge to heat dissipation. In severe cases, it will cause display abnormalities, damage the service life of the display screen and other adverse consequences. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provide a heat dissipation structure for a HUD liquid crystal display screen.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A heat dissipation structure for a HUD liquid crystal display screen comprises: a backlight module, wherein the frame of the backlight module consists of an upper iron frame and a lower iron frame, the upper iron frame and the lower iron frame are assembled by buckling around bayonet joints, a display screen is arranged between the upper iron frame and the lower iron frame, an upper radiation heat dissipation coating for heat dissipation is arranged on a side of the upper iron frame away from the lower iron frame, and a lower radiation heat dissipation coating for heat dissipation is arranged on a side of the lower iron frame away from the upper iron frame.

[0006] In one embodiment, the upper iron frame and the lower iron frame are both made of SUS304 material.

[0007] In one embodiment, the upper radiation heat dissipation coating and the lower radiation heat dissipation coating are mainly made of graphene and carbon nanotubes.

[0008] In one embodiment, the upper radiation heat dissipation coating and the lower radiation heat dissipation coating are respectively disposed on the outer sides of the upper iron frame and the lower iron frame by using an electrophoresis process.

[0009] In one embodiment, the thickness of the upper radiation heat dissipation coating and the lower radiation heat dissipation coating are both 0.03 mm-0.05 mm.

[0010] In one embodiment, a glass fiber thermal conductive tape is provided in the inner circumferential direction of the lower iron frame, the glass fiber thermal conductive tape surrounds the inner circumference of the lower iron frame, the glass fiber thermal conductive tape is attached to the lower iron frame, and the display screen is fixed to the lower iron frame through the glass fiber thermal conductive tape.

[0011] In one embodiment, a driver IC and an FPC are bound to the display screen, and a grounding copper block for grounding connection is provided on the FPC.

[0012] In one embodiment, a conductive cloth is provided on the back of the lower iron frame, one end of the conductive cloth is connected to the surface of the lower iron frame, and the other end of the conductive cloth is connected to the ground leakage copper block.

[0013] In one embodiment, the thickness of the conductive cloth is 0.05 mm-0.1 mm.

[0014] In one embodiment, the lower radiation heat dissipation coating is spaced relative to the conductive cloth.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] 1. The heat dissipation structure of a HUD liquid crystal display screen of the utility model is provided with an upper radiation heat dissipation coating and a lower radiation heat dissipation coating on the outer sides of the upper iron frame and the lower iron frame respectively, so as to effectively radiate and cool down the influence of sunlight in the external environment on the display screen, and give full play to the synergistic effect between blocking, reflection and radiation. In this way, the HUD will not be seriously heated and damaged when it is displayed at high brightness.

[0017] 2. The heat dissipation structure of a HUD liquid crystal display screen of the utility model fixes the display screen on the lower iron frame by arranging a glass fiber thermal conductive tape, so as to quickly conduct heat in the display screen while fixing the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 A schematic diagram of the side structure of a heat dissipation structure of a HUD liquid crystal display screen provided by the utility model;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0021] Figure 3 The utility model provides a back structural schematic diagram of a heat dissipation structure of a HUD liquid crystal display screen.

[0022] Description of the drawings: 10, backlight module; 11, upper iron frame; 12, lower iron frame; 20, display screen; 21, driver IC; 22, FPC; 221, ground leakage copper block; 30, glass fiber thermal conductive tape; 40, upper radiation heat dissipation coating; 50, lower radiation heat dissipation coating; 60, conductive cloth. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] A heat dissipation structure of a HUD liquid crystal display, referring to Figure 1 and Figure 2 , including a backlight module 10, the frame of the backlight module 10 is composed of an upper iron frame 11 and a lower iron frame 12, and the upper iron frame 11 and the lower iron frame 12 are assembled by snapping together. The upper iron frame 11 and the lower iron frame 12 are both rectangular and hollow.

[0025] Reference Figure 1 and Figure 2 The backlight module 10 contains a display screen 20, which is located between the upper iron frame 11 and the lower iron frame 12. A glass fiber thermal conductive tape 30 is provided in the inner circumferential direction of the lower iron frame 12, and the glass fiber thermal conductive tape 30 surrounds the inner circumference of the lower iron frame 12. The glass fiber thermal conductive tape 30 is attached to the lower iron frame 12 to fix the display screen 20. The display screen 20 is placed in the lower iron frame 12 and fixed by the glass fiber thermal conductive tape 30, and then the upper iron frame 11 and the lower iron frame 12 are assembled by buckling the surrounding bayonet to form a HUD.

[0026] Reference Figure 1 and Figure 2 , the upper iron frame 11 and the lower iron frame 12 are both made of SUS304 material, so that the upper iron frame 11 and the lower iron frame 12 have good heat dissipation. An upper radiation heat dissipation coating 40 for heat dissipation is provided on the side of the upper iron frame 11 away from the lower iron frame 12, and a lower radiation heat dissipation coating 50 for heat dissipation is provided on the side of the lower iron frame 12 away from the upper iron frame 11. The main materials of the upper radiation heat dissipation coating 40 and the lower radiation heat dissipation coating 50 are graphene and carbon nanotubes. Graphene and carbon nanotubes have high thermal radiation and thermal infrared emissivity. The upper radiation heat dissipation coating 40 and the lower radiation heat dissipation coating 50 present a macroscopically smooth and microscopically wavy radiation structure unit, which increases the heat dissipation area and conductivity, improves the effect of heat exchange, and quickly dissipates the heat of the heating element to the surroundings to achieve a cooling effect.

[0027] Reference Figure 1 and Figure 2 The upper radiation heat dissipation coating 40 and the lower radiation heat dissipation coating 50 are respectively arranged on the outer sides of the upper iron frame 11 and the lower iron frame 12 by electrophoresis process. The electrophoresis process has better adhesion and corrosion resistance than the spraying process. The coating thickness is uniform and dense, and it is more environmentally friendly.

[0028] Further, refer to Figure 1 and Figure 2The thickness of the upper radiation heat dissipation coating 40 and the lower radiation heat dissipation coating 50 is 0.03mm-0.05mm. The upper radiation heat dissipation coating 40 and the lower radiation heat dissipation coating 50 can effectively radiate and cool the sunlight in the external environment to its display screen 20, giving full play to the synergistic effect of blocking, reflection and radiation. So that the HUD will not be seriously heated and damaged when it is displayed in high brightness.

[0029] Reference Figure 1 and Figure 2 The display screen 20 is bound with a driver IC 21 and an FPC 22, which will also generate heat when working. The display screen 20 is attached to the inner side of the lower iron frame 12 using a glass fiber thermal conductive tape 30 to conduct the heat generated by the display screen 20 and the driver IC 21 to the lower iron frame 12 for release. The glass fiber thermal conductive tape 30 has excellent thermal conductivity, excellent adhesion, and excellent bonding reliability. It can quickly conduct the heat in the display screen 20 while fixing the display screen 20.

[0030] Reference Figure 3 , a ground leakage copper block 221 is provided on the FPC 22, and the ground leakage copper block 221 is used for grounding the FPC 22. A conductive cloth 60 is provided on the back of the lower iron frame 12, one end of the conductive cloth 60 is connected to the surface of the lower iron frame 12, and the other end of the conductive cloth 60 is connected to the ground leakage copper block 221 of the FPC 22. The conductive cloth 60 connects the ground leakage copper block 221 and the lower iron frame 12 to achieve the effect of guiding out the static electricity generated in the FPC 22 and preventing EMC static electricity problems.

[0031] Reference Figure 3 The thickness of the conductive cloth 60 is 0.05 mm-0.1 mm.

[0032] Further, refer to Figure 3 The lower radiation heat dissipation coating 50 is not provided in the area of ​​the lower iron frame 12 relative to the conductive cloth 60 , that is, the lower radiation heat dissipation coating 50 is kept away from the conductive cloth 60 to avoid the lower radiation heat dissipation coating 50 affecting the conductive effect of the conductive cloth 60 .

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat dissipation structure of a HUD liquid crystal display screen, characterized in that: include: A backlight module (10), wherein the frame of the backlight module (10) is composed of an upper iron frame (11) and a lower iron frame (12), wherein the upper iron frame (11) and the lower iron frame (12) are assembled by buckling around the upper iron frame (11) and the lower iron frame (12), wherein a display screen (20) is arranged between the upper iron frame (11) and the lower iron frame (12), wherein an upper radiation heat dissipation coating (40) for heat dissipation is arranged on a side of the upper iron frame (11) away from the lower iron frame (12), and wherein a lower radiation heat dissipation coating (50) for heat dissipation is arranged on a side of the lower iron frame (12) away from the upper iron frame (11).

2. The heat dissipation structure of a HUD liquid crystal display according to claim 1, characterized in that: The upper iron frame (11) and the lower iron frame (12) are both made of SUS304 material.

3. The heat dissipation structure of a HUD liquid crystal display according to claim 1, characterized in that: The main materials of the upper radiation heat dissipation coating (40) and the lower radiation heat dissipation coating (50) are graphene and carbon nanotubes.

4. The heat dissipation structure of a HUD liquid crystal display according to claim 3, characterized in that: The upper radiation heat dissipation coating (40) and the lower radiation heat dissipation coating (50) are respectively arranged on the outer sides of the upper iron frame (11) and the lower iron frame (12) by using an electrophoresis process.

5. The heat dissipation structure of a HUD liquid crystal display according to claim 4, characterized in that: The thickness of the upper radiation heat dissipation coating (40) and the lower radiation heat dissipation coating (50) are both 0.03 mm to 0.05 mm.

6. The heat dissipation structure of a HUD liquid crystal display screen according to claim 5, characterized in that: A glass fiber thermal conductive tape (30) is provided in the inner circumferential direction of the lower iron frame (12); the glass fiber thermal conductive tape (30) surrounds the inner circumference of the lower iron frame (12); the glass fiber thermal conductive tape (30) is attached to the inside of the lower iron frame (12); and the display screen (20) is fixed to the lower iron frame (12) via the glass fiber thermal conductive tape (30).

7. The heat dissipation structure of a HUD liquid crystal display screen according to claim 6, characterized in that: The display screen (20) is bound with a driving IC (21) and an FPC (22), and the FPC (22) is provided with a grounding copper block (221) for grounding connection.

8. The heat dissipation structure of a HUD liquid crystal display screen according to claim 7, characterized in that: A conductive cloth (60) is provided on the back of the lower iron frame (12), one end of the conductive cloth (60) is connected to the surface of the lower iron frame (12), and the other end of the conductive cloth (60) is connected to the ground leakage copper block (221).

9. The heat dissipation structure of a HUD liquid crystal display screen according to claim 8, characterized in that: The thickness of the conductive cloth (60) is 0.05 mm-0.1 mm.

10. The heat dissipation structure of a HUD liquid crystal display screen according to claim 9, characterized in that: The lower radiation heat dissipation coating (50) is positioned relative to the conductive cloth (60) to avoid air.

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