High-temperature-resistant anti-tilting vehicle-mounted touch screen
By adopting a combined design of a heat-homogenizing plate body and a semiconductor hot and cold device in the vehicle touch screen, the problems of screen warping and overheating in high-temperature environments are solved, and efficient thermal management and service life are achieved.
Patent Information
- Application Number
- CN202411988283.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-18
AI Technical Summary
Existing automotive touch screens are prone to warping due to material deformation in high temperature environments, and the heat dissipation structure is simple and difficult to effectively reduce the working temperature, resulting in overheating and damage to electronic components.
The design scheme of combining the heat-smoothing plate body and the semiconductor cooling and cooling device is adopted to achieve efficient heat conduction through the heat-smoothing plate body to prevent the screen from warping due to temperature difference, and to achieve efficient and active cooling through the combination of the semiconductor refrigeration device, heat-smoothing aluminum plate and thermally conductive copper tube.
It effectively prevents the warping problem caused by the temperature difference of the screen, reduces the working temperature of the touch screen, extends the service life, and improves the safety and stability of the equipment.
Smart Images
Figure CN119847363A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of touch screens, and in particular to a high-temperature-resistant and anti-warping vehicle-mounted touch screen. Background Art
[0002] With the continuous improvement of the degree of automobile electronics, the popularity of in-vehicle infotainment systems and driver assistance systems has made in-vehicle touch screens an indispensable part of modern vehicles. In recent years, in-vehicle touch screen technology has experienced a development process from simple input and output devices to highly integrated, multi-functional interactive interfaces. Early in-vehicle displays were mostly non-touch and relied on physical buttons for operation. However, in order to provide a more intuitive operating experience and greater screen space utilization, touch screens have gradually replaced traditional control panels. With this change, in-vehicle touch screens not only need to meet basic display and touch functions, but also need to cope with complex in-vehicle environmental challenges, including temperature fluctuations, vibration and shock. In addition, due to the limitations of the vehicle's internal space, how to achieve efficient heat dissipation in a limited space while ensuring the stability and durability of the touch screen has become the focus of current research.
[0003] There are several shortcomings in the existing vehicle-mounted touch screen design, especially when working in a high temperature environment. Traditional touch screens usually use plastic or ordinary metal materials as the outer shell. These materials are easy to deform at high temperatures, causing the screen to warp, affecting the visual effect and touch accuracy. In addition, the heat dissipation structure in existing products is relatively simple, mainly relying on natural heat dissipation or fan forced cooling, which is difficult to effectively reduce the operating temperature of the touch screen in a high temperature environment, which may cause electronic components to overheat and be damaged, shortening the service life. More importantly, when the vehicle is in direct sunlight or driving in a hot environment for a long time, the surface temperature of the touch screen rises sharply, and the user will feel uncomfortable or even burn when in direct contact. In response to the above-mentioned problems, the present invention, while considering improving the high temperature resistance of the touch screen, also focuses on solving the warping phenomenon caused by temperature difference. By introducing an innovative design scheme combining a heat spreader and a semiconductor hot and cold device, it aims to provide a more reliable and comfortable user experience. Summary of the invention
[0004] In view of the deficiencies in the prior art, the present invention provides a high-temperature resistant and anti-warping vehicle-mounted touch screen, comprising a mounting shell, a heat spreader body is provided inside the mounting shell, a buffer frame is provided on the front side of the heat spreader body, a touch screen body is provided on the front side of the buffer frame, a first metal frame is fixedly connected to the outside of the touch screen body, a semiconductor refrigeration device is provided inside the mounting shell, a plurality of first heat dissipation aluminum plates are fixedly connected to the upper front side of the semiconductor refrigeration device, a plurality of second heat dissipation aluminum plates are fixedly connected to the lower front side of the semiconductor refrigeration device, diamond-shaped heat-conducting copper tubes are penetrated and welded on the first and second heat-conducting aluminum plates, metal sleeves are fixedly connected to the left and right sides of the diamond-shaped heat-conducting copper tubes respectively, and a contact copper plate is fixedly connected to the front side of the metal sleeves.
[0005] The left and right sides of the diamond-shaped heat-conducting copper tube are elastic, the contact copper plate can be closely attached to the rear of the heat-spreading plate body, and the front side of the contact copper plate is coated with thermal grease.
[0006] A second metal frame is fixedly connected to the outer side of the heat spreader body. The thickness of the second metal frame is less than that of the heat spreader body and the second metal frame protrudes forward slightly.
[0007] The left side and the right side of the second metal frame are respectively welded with connection ears, the connection ears are provided with first mounting holes, and the second metal frame is connected to the mounting shell by bolts.
[0008] A rectangular opening is provided at the rear of the installation shell, and the semiconductor refrigeration device is embedded in the rectangular opening.
[0009] The installation shell is provided with screw holes, and the semiconductor refrigeration device is connected to the installation shell through screws.
[0010] The semiconductor refrigeration device comprises a heat preservation frame, and a first copper plate for welding with a first heat dissipation aluminum plate and a second heat dissipation aluminum plate is fixedly connected to the front side of the heat preservation frame.
[0011] A second copper plate is fixedly connected to the rear side of the heat preservation frame, and a refrigeration plate is placed inside the heat preservation frame.
[0012] A third heat dissipation aluminum plate is welded to the rear side of the second copper plate, and a fan is installed on the rear side of the third heat dissipation aluminum plate.
[0013] The installation shell is provided with a ventilation strip, a wind guide tube is welded on the front side of the ventilation strip, a second installation hole is provided on the installation shell, and a rotating shaft sleeve is fixedly connected to the left and right sides of the installation shell respectively.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By introducing a heat spreader and a buffer frame, efficient heat conduction is achieved between the touch screen body and the mounting housing, and finally the screen is prevented from warping due to temperature difference. By setting the heat spreader inside the mounting housing and configuring a buffer frame on its front side, this design reduces the impact of external impact on the screen, and the heat spreader can quickly and evenly distribute heat to avoid local overheating. This structural design is particularly suitable for environments with large temperature changes in the car, and effectively prevents the screen from warping due to thermal expansion and contraction under different temperature conditions, thereby maintaining the flatness and touch accuracy of the screen and improving the user experience.
[0015] 2. By optimizing the heat dissipation system, especially by using a semiconductor refrigeration device combined with the first and second heat dissipation aluminum plates, and a diamond-shaped heat-conducting copper tube, an efficient active cooling mechanism is achieved, and finally the effect of reducing the operating temperature of the touch screen and extending its service life is achieved. An efficient active cooling system is formed by embedding a semiconductor refrigeration device with a refrigeration plate inside the mounting shell, and the first and second heat dissipation aluminum plates connected thereto and the diamond-shaped heat-conducting copper tubes welded through them. The system can quickly take away the heat generated by the touch screen and further improve the heat dissipation efficiency. This design is particularly important for vehicle-mounted touch screens that are in high-temperature environments for a long time. It effectively reduces the operating temperature of electronic components, reduces the failure rate caused by overheating, significantly extends the service life of the touch screen, and improves the safety and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the mounting housing and the heat dissipation aluminum plate in the present invention; Figure 3 It is a schematic diagram of the heat dissipation aluminum plate and the mounting shell structure in the present invention; Figure 4 It is a schematic diagram of the rear structure of the semiconductor refrigeration device in the present invention; Figure 5 It is a schematic diagram of the explosion structure of the semiconductor refrigeration device in the present invention.
[0018] In the figure: 1. touch screen body; 2. first metal frame; 3. buffer frame; 4. heat spreader; 5. second metal frame; 6. connecting ear; 7. mounting shell; 8. shaft sleeve; 9. second mounting hole; 10. air guide tube; 11. bolt; 12. first heat dissipation aluminum plate; 13. semiconductor refrigeration device; 131. insulation frame; 132. second copper plate; 133. first copper plate; 134. cooling plate; 14. second heat dissipation aluminum plate; 15. diamond-shaped heat-conducting copper tube; 16. rectangular opening; 17. ventilation strip; 18. screw hole; 19. third heat dissipation aluminum plate; 20. fan; 21. metal sleeve; 22. contact copper plate. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] like Figure 1-5 A high-temperature-resistant and anti-warping vehicle-mounted touch screen shown in the figure includes a mounting shell 7, a heat spreader body 4 is arranged inside the mounting shell 7, a buffer frame 3 is arranged on the front side of the heat spreader body 4, a touch screen body 1 is arranged on the front side of the buffer frame 3, a first metal frame 2 is fixedly connected to the outer side of the touch screen body 1, a semiconductor refrigeration device 13 is arranged inside the mounting shell 7, a plurality of first heat dissipation aluminum plates 12 are fixedly connected to the upper front side of the semiconductor refrigeration device 13, a plurality of second heat dissipation aluminum plates 14 are fixedly connected to the lower front side of the semiconductor refrigeration device 13, a diamond-shaped heat-conducting copper tube 15 is penetrated and welded on the first heat dissipation aluminum plate 12 and the second heat dissipation aluminum plate 14, a metal sleeve 21 is fixedly connected to the left and right sides of the diamond-shaped heat-conducting copper tube 15, and a contact copper plate 22 is fixedly connected to the front side of the metal sleeve 21.
[0021] The left and right sides of the diamond-shaped heat-conducting copper tube 15 are elastic, and the contact copper plate 22 can be closely attached to the rear of the heat-spreading plate 4 . The front side of the contact copper plate 22 is coated with thermal grease.
[0022] The outer side of the heat spreader 4 is fixedly connected with a second metal frame 5 . The thickness of the second metal frame 5 is smaller than that of the heat spreader 4 , and the second metal frame 5 is slightly convex forward.
[0023] The second metal frame 5 is welded with connecting ears 6 on the left and right sides respectively. The connecting ears 6 are provided with first mounting holes. The second metal frame 5 is connected to the mounting housing 7 by bolts 11 .
[0024] A rectangular opening 16 is formed at the rear of the mounting housing 7 , and the semiconductor refrigeration device 13 is embedded in the rectangular opening 16 .
[0025] The mounting shell 7 is provided with screw holes 18 , and the semiconductor refrigeration device 13 is connected to the mounting shell 7 by screws.
[0026] The semiconductor refrigeration device 13 includes a heat preservation frame 131 , and a first copper plate 133 for welding with the first heat dissipation aluminum plate 12 and the second heat dissipation aluminum plate 14 is fixedly connected to the front side of the heat preservation frame 131 .
[0027] A second copper plate 132 is fixedly connected to the rear side of the heat preservation frame 131 , and a cooling fin 134 is placed inside the heat preservation frame 131 .
[0028] A third heat dissipation aluminum plate 19 is welded to the rear side of the second copper plate 132 , and a fan 20 is installed to the rear side of the third heat dissipation aluminum plate 19 .
[0029] A ventilation strip 17 is provided on the mounting shell 7, and an air guide tube 10 is welded to the front side of the ventilation strip 17. A second mounting hole 9 is provided on the mounting shell 7, and a rotating shaft sleeve 8 is fixedly connected to the left and right sides of the mounting shell 7 respectively.
[0030] Working principle: When the vehicle is started and the touch screen is powered on, the semiconductor refrigeration device 13 installed inside the mounting housing 7 starts to operate. The device consists of a heat preservation frame 131 embedded in the rectangular opening 16, a first copper plate 133 welded on the front side, a second copper plate 132 welded on the rear side, and a cooling plate 134 placed inside. The cooling plate 134 generates a temperature difference effect when powered on, transferring heat from one side of the touch screen to the other side, thereby achieving the purpose of cooling. The first copper plate 133 and the second copper plate 132 are respectively connected to the first heat dissipation aluminum plate 12 and the third heat dissipation aluminum plate 19, and heat is quickly dissipated through them. At the same time, the fan 20 is installed on the rear side of the third heat dissipation aluminum plate 19 to further accelerate the air flow and improve the heat dissipation efficiency.
[0031] The heat generated by the touch screen body 1 is conducted to the heat spreader body 4. The heat spreader body 4 has good heat diffusion characteristics and can quickly and evenly distribute heat to prevent local overheating. In addition, the diamond-shaped heat-conducting copper tube 15 passes through and is welded to the first heat dissipation aluminum plate 12 and the second heat dissipation aluminum plate 14. The diamond-shaped heat-conducting copper tube 15 is elastic and is connected to the contact copper plate 22 through the metal sleeves 21 at both ends. The latter is close to the rear of the heat spreader body 4, ensuring an efficient heat conduction path. In order to optimize the heat transfer effect, the front side of the contact copper plate 22 is coated with thermal grease to reduce the thermal resistance between the interfaces.
[0032] In order to deal with the problem of material expansion or contraction caused by temperature changes, the present invention adopts a special structural design to ensure the flatness of the touch screen. The second metal frame 5 fixedly connected to the outside of the heat spreader 4 is thinner than the heat spreader 4 itself and slightly protrudes forward, which not only enhances the stability of the overall structure, but also helps to disperse stress and reduce the risk of screen warping. The connecting ears 6 welded on both sides of the second metal frame 5 are firmly connected to the mounting housing 7 through bolts 11, providing additional support.
[0033] The ventilation strips 17 on the mounting housing 7 provide necessary air circulation channels for the internal components, and cooperate with the air guide tube 10 to guide the air flow, ensuring effective natural cooling. In addition, the shaft sleeves 8 on both sides of the mounting housing 7 allow the touch screen to be adjusted in angle to adapt to different usage scenarios and light conditions without affecting the effectiveness of the ventilation system.
[0034] The above embodiments are only used to help understand the method and core idea of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims
1. A high temperature resistant and anti-warping vehicle-mounted touch screen, comprising a mounting housing (7), characterized in that: A heat spreader body (4) is provided inside the installation shell (7), a buffer frame (3) is provided on the front side of the heat spreader body (4), a touch screen body (1) is provided on the front side of the buffer frame (3), a first metal frame (2) is fixedly connected to the outside of the touch screen body (1), a semiconductor refrigeration device (13) is provided inside the installation shell (7), a plurality of first heat dissipation aluminum plates (12) are fixedly connected to the upper front side of the semiconductor refrigeration device (13), a plurality of second heat dissipation aluminum plates (14) are fixedly connected to the lower front side of the semiconductor refrigeration device (13), a rhombus-shaped heat-conducting copper tube (15) is penetrated and welded through the first heat dissipation aluminum plate (12) and the second heat dissipation aluminum plate (14), a metal sleeve (21) is fixedly connected to the left and right sides of the rhombus-shaped heat-conducting copper tube (15), and a contact copper plate (22) is fixedly connected to the front side of the metal sleeve (21).
2. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 1, characterized in that: The left and right sides of the diamond-shaped heat-conducting copper tube (15) are elastic, the contact copper plate (22) can be closely attached to the rear of the heat-spreading plate body (4), and the front side of the contact copper plate (22) is coated with heat-conducting silicone grease.
3. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 1, characterized in that: A second metal frame (5) is fixedly connected to the outer side of the heat spreader body (4); the thickness of the second metal frame (5) is smaller than the thickness of the heat spreader body (4), and the second metal frame (5) is slightly protruded forward.
4. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 3, characterized in that: The second metal frame (5) is welded with connecting ears (6) on the left and right sides respectively, and a first mounting hole is provided on the connecting ears (6). The second metal frame (5) is connected to the mounting housing (7) via bolts (11).
5. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 1, characterized in that: A rectangular opening (16) is provided at the rear of the installation housing (7), and the semiconductor refrigeration device (13) is embedded in the rectangular opening (16).
6. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 1, characterized in that: The mounting shell (7) is provided with screw holes (18), and the semiconductor refrigeration device (13) is connected to the mounting shell (7) via screws.
7. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 1, characterized in that: The semiconductor refrigeration device (13) comprises a heat preservation frame (131), and a first copper plate (133) for welding to a first heat dissipation aluminum plate (12) and a second heat dissipation aluminum plate (14) is fixedly connected to the front side of the heat preservation frame (131).
8. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 7, characterized in that: A second copper plate (132) is fixedly connected to the rear side of the heat-insulating frame (131), and a refrigeration plate (134) is placed inside the heat-insulating frame (131).
9. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 8, characterized in that: A third heat dissipation aluminum plate (19) is welded to the rear side of the second copper plate (132), and a fan (20) is installed on the rear side of the third heat dissipation aluminum plate (19).
10. The high temperature resistant and anti-warping vehicle-mounted touch screen according to claim 1, characterized in that: The mounting shell (7) is provided with a ventilation strip (17), a wind guide tube (10) is welded to the front side of the ventilation strip (17), a second mounting hole (9) is provided on the mounting shell (7), and a rotating shaft sleeve (8) is fixedly connected to the left and right sides of the mounting shell (7), respectively.