CN-224205472-U - Electromagnetic shielding and heat radiation structure of vehicle-mounted display screen aluminum foil tape

Abstract

The utility model discloses an electromagnetic shielding and radiating structure of an aluminum foil tape of a vehicle-mounted display screen, which comprises a glass cover plate, sheet optical glue, polyurethane hot melt glue, a display screen assembly, a backlight source assembly, a magnesium alloy shell, a printed circuit board and a metal plate back shell which are sequentially arranged from front to back, wherein the glass cover plate is connected with the display screen assembly through the sheet optical glue, the display screen assembly comprises a display screen and an aluminum foil tape, the display screen is connected with the sheet optical glue through the polyurethane hot melt glue, the aluminum foil tape is arranged at a turning position of the display screen, the backlight source assembly is arranged on the display screen, the magnesium alloy shell is arranged on the backlight source assembly, the printed circuit board is arranged on the magnesium alloy shell, and the metal plate back shell is arranged on the printed circuit board. Therefore, the temperature of the surface of the display screen is reduced, the stricter temperature rise requirement of the display screen is further met, and the service life and the user experience of the whole display screen are improved.

Inventors

• WANG FULI

Assignees

• 江苏天宝汽车电子有限公司

Dates

Publication Date

20260505

Application Date

20250515

Claims (6)

1. 1. The electromagnetic shielding and radiating structure of the aluminum foil tape of the vehicle-mounted display screen is characterized by comprising a glass cover plate (1), sheet optical cement (2), polyurethane hot melt adhesive (3), a display screen assembly (4), a backlight source assembly (5), a magnesium alloy shell (6), a printed circuit board (7) and a sheet metal rear shell (8) which are sequentially arranged from front to back, The glass cover plate (1) is connected with the display screen assembly (4) through the sheet optical cement (2); the display screen assembly (4) comprises a display screen (9) and an aluminum foil tape (10), wherein, The display screen (9) is connected with the sheet optical adhesive (2) through the polyurethane hot melt adhesive (3); The aluminum foil adhesive tape (10) is arranged at the turning position of the display screen (9); the backlight source assembly (5) is arranged on the display screen (9); The magnesium alloy shell (6) is arranged on the backlight source assembly (5); The printed circuit board (7) is arranged on the magnesium alloy shell (6); The sheet metal rear shell (8) is arranged on the printed circuit board (7).
2. 2. The electromagnetic shielding and heat dissipating structure of an aluminum foil tape for a vehicle-mounted display screen according to claim 1, wherein the backlight assembly (5) comprises an optical film (11), a light guide plate (12), a light bar (13) and a backlight aluminum case (14), wherein, The optical film (11) is arranged on the display screen (9); The light guide plate (12) is connected with the optical film (11) through the aluminum foil tape (10); The light bar (13) is arranged on the backlight aluminum shell (14); the backlight aluminum shell (14) is arranged on the magnesium alloy shell (6).
3. 3. The electromagnetic shielding and heat dissipation structure of the aluminum foil tape for the vehicle-mounted display screen according to claim 1, wherein a buffer component (15) is arranged at the bottom of the magnesium alloy shell (6), the buffer components (15) are four groups, and the buffer components (15) are buffer rubber pads.
4. 4. The electromagnetic shielding and heat dissipating structure of an aluminum foil tape for a vehicle-mounted display screen according to claim 2, wherein said aluminum foil tape (10) comprises a black aluminum foil layer, a PET layer and a transparent double-sided adhesive layer, wherein, The black aluminum foil layer, the PET layer and the transparent double-sided adhesive layer are sequentially arranged from outside to inside.
5. 5. The electromagnetic shielding and heat dissipating structure of an aluminum foil tape for a vehicle-mounted display screen according to claim 2, wherein the aluminum casing (14) for the backlight source is formed by punching an aluminum plate.
6. 6. The electromagnetic shielding and heat dissipating structure of the aluminum foil tape for the vehicle-mounted display screen according to claim 1, wherein the sheet metal rear shell (8) is formed by stamping a hot dip galvanized sheet with the thickness of 0.6 mm.

Description

Electromagnetic shielding and heat radiation structure of vehicle-mounted display screen aluminum foil tape Technical Field The utility model relates to the technical field of vehicle-mounted display screens, in particular to an electromagnetic shielding and heat dissipation structure of an aluminum foil tape of a vehicle-mounted display screen. Background With the popularization of 5G and internet of vehicles technologies, the shielding requirement of vehicle-mounted electronic equipment on high-frequency electromagnetic interference is improved. The novel shielding adhesive tape gradually adopts nano materials (such as carbon nano tubes and graphene) and metallized fibers so as to enhance the shielding effectiveness of a high frequency band. For example, the fourth generation conductive cloth tape (such as 511XDF series) pushed by 3M can maintain stable impedance performance in aging test by optimizing material structure, and adapt to vehicle-mounted severe environment. The shielding tape is not limited to a single function, but develops towards the integration of electromagnetic shielding, heat dissipation and structural adhesion. For example, CEF-3BV conductive tape replaces the traditional iron frame design, has the advantages of shading light, EMI shielding and simplifying the attaching process, and has the cost of only 1/6 of that of the iron frame. The new energy automobile has higher requirements on electromagnetic compatibility and heat dissipation, and the conductive adhesive tape eliminates potential difference through grounding, so that signal interference is reduced. The CEF-3BV adhesive tape of 3M adopts a full-lamination design, and has better performance than the traditional metal structure in ESD test, so that the light leakage risk is reduced. The high heat conduction adhesive film (such as 1.3-1.5W/mK) effectively solves the problem of heating of the OLED module, prevents screen burn and prolongs the service life of the element. The material balances the heat conductivity and the bonding strength by optimizing the structures of the base material and the adhesive, and is suitable for the light and thin requirements and the high heat dissipation requirements of the vehicle-mounted display screen. In the future, as the vehicle-mounted display screen moves to large-size multi-screen linkage, the shielding adhesive tape is more focused on material innovation and process optimization so as to cope with complex electromagnetic environment and heat dissipation challenges. Disclosure of utility model The present utility model aims to solve at least one of the technical problems in the related art to some extent. The utility model provides an electromagnetic shielding and radiating structure of an aluminum foil tape of a vehicle-mounted display screen, which comprises a glass cover plate, sheet optical glue, polyurethane hot melt glue, a display screen assembly, a backlight assembly, a magnesium alloy shell, a printed circuit board and a sheet metal rear shell which are sequentially arranged from front to back, wherein the glass cover plate is connected with the display screen assembly through the sheet optical glue, the display screen assembly comprises a display screen and an aluminum foil tape, the display screen is connected with the sheet optical glue through the polyurethane hot melt glue, the aluminum foil tape is arranged at a turning position of the display screen, the backlight assembly is arranged on the display screen, the magnesium alloy shell is arranged on the backlight assembly, the printed circuit board is arranged on the magnesium alloy shell, and the sheet metal rear shell is arranged on the printed circuit board. In addition, according to the electromagnetic shielding and heat dissipation structure of the aluminum foil tape for the vehicle-mounted display screen provided by the application, the electromagnetic shielding and heat dissipation structure can also have the following additional technical characteristics: The backlight assembly comprises an optical film, a light guide plate, a lamp strip and a backlight aluminum shell, wherein the optical film is arranged on the display screen, the light guide plate is connected with the optical film through the aluminum foil adhesive tape, the lamp strip is arranged on the backlight aluminum shell, and the backlight aluminum shell is arranged on the magnesium alloy shell. Specifically, the bottom of the magnesium alloy shell is provided with four buffer parts, and the buffer parts are buffer rubber mats. Specifically, the aluminum foil tape comprises a black aluminum foil layer, a PET layer and a transparent double-sided adhesive layer, wherein the black aluminum foil layer, the PET layer and the transparent double-sided adhesive layer are sequentially arranged from outside to inside. Specifically, the backlight aluminum shell is formed by stamping an aluminum plate. Specifically, the sheet metal rear shell is formed by stamping a ho