Vehicle-mounted intelligent touch device for improving surface brightness
By improving the touch film design and reflective bowl structure, and combining light-transmitting 3D Mesh and transparent panels, the problem of low light transmittance in in-vehicle smart touch devices has been solved, resulting in improved icon brightness and structural simplification.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MARELLI (GUANGZHOU) CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-21
AI Technical Summary
The low light transmittance of existing in-vehicle smart touch devices makes it difficult to achieve the required brightness of 100-200 nits for surface icons. This is especially true for IP panels where the brightness requirement is even higher. Furthermore, increasing the power of the LED chips can lead to increased heat generation and structural complexity.
By improving the touch film design, increasing the light transmittance of the reflective bowl structure and transparent panel, and combining the light-transmitting 3D Mesh and transparent panel, a reflective bowl structure is formed to concentrate light, improve light transmittance, and enhance icon brightness.
Without increasing the power of the LEDs or the heat dissipation structure, the brightness of the surface icons was increased by 10%-30%, the structure was simplified, and the cost was reduced.
Smart Images
Figure CN224536490U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an in-vehicle intelligent touch control device for improving surface brightness. Background Technology
[0002] Some of the touch-sensitive buttons in car interiors use soft-touch, translucent leather, with a layer of translucent fabric and transparent 3D mesh underneath. Because the light transmittance of leather, fabric, and 3D mesh is relatively low, the overall light transmittance of the assembly is very low, resulting in very low brightness of the icons displayed on the surface.
[0003] Currently, due to the very low light transmittance of the light-transmitting surface of the assembly, the brightness of button icons is only tens of nits, or even a few nits, when using normal LEDs without adding a heat dissipation structure, making it difficult to reach the brightness requirement of 100-200 nits. Especially for IP panels, the brightness requirement even reaches 200-500 nits.
[0004] Chinese patent application 202210810010.6 discloses a vehicle surface trim panel, its preparation method, and a vehicle. The surface trim panel includes a covering frame, a translucent leather layer, and a touch screen body. The covering frame has a first notch, and the touch screen body is detachably connected to the first notch. The translucent leather layer is disposed on the surface of the covering frame to cover the covering frame and the touch screen body. The covering frame can be made of a non-transparent material. The touch screen body can be installed at the first notch. The area of the transparent material involved in the touch screen body is less than or equal to the area of the first notch. The touch screen body is installed at the first notch by being detachably connected to the covering frame.
[0005] Chinese Patent 202321459920.0 discloses a pressure-sensitive multi-functional panel, including a panel, a vibration module, a touch module, at least one pressure sensor, a housing, a light-blocking structure, a motherboard, and a base.
[0006] Chinese Patent 202122281950.4 discloses a smart touch panel covered with translucent leather, belonging to the field of automotive interior auxiliary equipment, and specifically relates to an automotive interior touch panel, including a cover plate, connecting pillars, circuit board brackets, circuit board, rear cover plate, capacitor film, rubber pillars, translucent leather, light guide plate, and motor.
[0007] Chinese Patent 202220820170.4 discloses a leather-covered soft-touch intelligent sensor touch interior component, including translucent PU leather and circuitry. The translucent PU leather is disposed above a circuit board, and at least one set of LED components is mounted on the upper surface of the circuit board. Anti-light pollution foam is sleeved on the LED components. A translucent pattern block, a translucent 3D MESH layer, a translucent PC skeleton, and a transparent single-point capacitor IC are disposed between the translucent PU leather and the anti-light pollution foam.
[0008] In the aforementioned technologies, the common method to improve light transmittance is to increase the power of the LED chips, which leads to significant heat generation problems. This necessitates the addition of a heat dissipation structure, resulting in a complex structure and a substantial increase in cost.
[0009] Therefore, providing an in-vehicle smart touch device that improves surface brightness is a problem that needs to be solved. Summary of the Invention
[0010] To address the shortcomings of existing technologies, the main objective of this invention is to improve the brightness of icons on the skin by modifying the touch film design and adding a reflective bowl structure, while keeping other conditions such as translucent skin, translucent 3D mesh, and transparent panel the same.
[0011] To achieve the aforementioned main objectives, this utility model discloses an in-vehicle intelligent touch control device for improving surface brightness, comprising: a leather surface layer, a light-transmitting 3D Mesh, a transparent panel, a PCBA, a touch film, and a light-blocking plate; the leather surface layer covers the light-transmitting 3D Mesh, which in turn covers the transparent panel, and the leather surface layer has multiple light-transmitting icons; the PCBA is located inside the transparent panel, and chips and multiple LED beads are mounted on the PCBA; the light-blocking plate is disposed between the PCBA and the transparent panel; and the touch film is located between the light-blocking plate and the transparent panel.
[0012] The light-blocking plate has multiple receiving slots, which are through-holes; each LED bead is located in one receiving slot; each light-transmitting icon corresponds to one receiving slot.
[0013] In this invention, the light transmittance of the leather surface layer is approximately 3%-15%; the light transmittance of the translucent 3D Mesh is approximately 40%-80%. The leather surface layer and the translucent 3D Mesh, as well as the translucent 3D Mesh and the transparent panel, are bonded together with transparent adhesive.
[0014] In this invention, the transparent panel is mostly made of transparent PC, PMMA, etc., with a light transmittance of about 80%-90%.
[0015] In this invention, the receiving groove, the transparent panel, and the PCBA form a cavity, and each LED bead is located within a cavity; each light-transmitting icon corresponds to a cavity setting.
[0016] According to a specific embodiment of this utility model, the receiving groove has a bowl-shaped structure, and the lamp beads are located at the bottom of the bowl.
[0017] According to a specific embodiment of this utility model, the surface of the receiving tank is electroplated and sprayed to form a mirror finish, creating a reflective bowl. In this solution, by making the light-blocking plate into a reflective bowl, the scattered light is focused onto the light-transmitting icon, resulting in a 10%-30% increase in brightness.
[0018] According to a specific embodiment of this utility model, the touch film includes a silver paste area and a through-hole area. The through-hole area includes multiple through-holes, each corresponding to a single LED bead. The silver paste area is provided with conductive silver paste and includes gaps between the through-holes. The light transmittance of the through-holes is 100%, which is 17% higher than that of a transparent film (approximately 83%). Furthermore, in the touch film, the conductive silver paste lines in the silver paste area provide touch sensing functionality.
[0019] According to a specific embodiment of the present invention, it further includes a bottom cover, which is located inside the PCBA, and the PCBA is fixedly mounted on the bottom cover.
[0020] According to a specific embodiment of this utility model, the number of light-transmitting icons, lamp beads, receiving grooves (cavities), and through holes are consistent and correspondingly arranged.
[0021] This utility model has the following beneficial effects:
[0022] In this invention, by setting a reflector bowl, the light emitted by the LED beads is focused onto the light-transmitting icon, thereby increasing the brightness of the icon. In addition, the light-transmitting area of the touch film is designed as a through hole instead of the original light-transmitting film, which increases the light transmittance of the assembly and thus increases the brightness of the icon.
[0023] To more clearly illustrate the purpose, technical solution, and advantages of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the in-vehicle intelligent touch control device in Embodiment 1;
[0025] Figure 2 This is a schematic diagram of the light-blocking plate in Example 1;
[0026] Figure 3 This is a schematic diagram of the touch film structure in Example 1. Detailed Implementation
[0027] Many specific details are set forth in the following description in conjunction with embodiments in order to provide a full understanding of the present invention. However, it should be understood that the following embodiments and detailed description are for illustrative purposes only and do not limit the scope of protection of the present invention.
[0028] Example 1
[0029] like Figure 1As shown, this embodiment provides an in-vehicle intelligent touch control device for improving surface brightness, comprising: a leather surface layer 101, a light-transmitting 3D Mesh 102, a transparent panel 103, a PCBA 106, a touch film 104, a light-blocking plate 105, and a bottom cover 107. The leather surface layer 101 covers the light-transmitting 3D Mesh and has multiple light-transmitting icons 108. The PCBA 106 is located inside the transparent panel, and chips and multiple LED beads 109 are attached to the PCBA. The light-blocking plate 105 is disposed between the PCBA 106 and the transparent panel 103. The touch film 104 is located between the light-blocking plate 105 and the transparent panel 103. The bottom cover 107 is located inside the PCBA 106, and the PCBA 106 is fixedly mounted on the bottom cover 107.
[0030] like Figure 2 As shown, the light-blocking plate 105 is provided with multiple receiving slots 110, which are through slots; each lamp bead 109 is located in a receiving slot 110; each light-transmitting icon corresponds to a receiving slot 110.
[0031] The receiving groove 110 has a bowl-shaped structure, and the LED bead 109 is located at the bottom of the bowl; the surface of the receiving groove 110 is electroplated and sprayed to form a mirror surface, forming a reflective bowl.
[0032] like Figure 3 As shown, the touch film 104 includes a silver paste region 201 and a through-hole region. The through-hole region includes a plurality of through holes 202, each through hole 202 corresponding to an LED bead 109. The silver paste region 201 is provided with conductive silver paste and includes gaps between the through holes 202.
[0033] The number of light-transmitting icons 108, LED beads 109, chambers 110, and through holes 202 are the same and correspondingly arranged. For example, in this embodiment, there are three light-transmitting icons 108, three LED beads 109, three chambers 110, and three through holes 202 on the touch film 104.
[0034] Although the present invention has been described above through embodiments, the above embodiments are only used to exemplarily describe possible implementations of the present invention, and are not intended to limit the scope of protection of the present invention. Any equivalent substitutions or changes made by those skilled in the art in accordance with the present invention should also be covered by the scope of protection defined by the claims of the present invention.
Claims
1. An in-vehicle smart touch control device for improving surface brightness, comprising: The system comprises a leather surface, a translucent 3D Mesh, a transparent panel, a PCBA, a touch film, and a light-blocking plate. The leather surface covers the translucent 3D Mesh, and the translucent 3D Mesh encases the transparent panel. The leather surface has multiple translucent icons. The PCBA is located inside the transparent panel, and chips and multiple LEDs are mounted on the PCBA. The light-blocking plate is disposed between the PCBA and the transparent panel. The touch film is located between the light-blocking plate and the transparent panel. The light-blocking plate is provided with multiple receiving slots, which are through-holes; each lamp bead is located in one of the receiving slots; each light-transmitting icon corresponds to one of the receiving slots.
2. The in-vehicle intelligent touch control device as described in claim 1, characterized in that: The receiving groove has a bowl-shaped structure, and the LED beads are located at the bottom of the bowl.
3. The in-vehicle intelligent touch control device as described in claim 2, characterized in that, The surface of the receiving tank is electroplated and sprayed to form a mirror finish, creating a reflective bowl.
4. The in-vehicle intelligent touch control device as described in claim 1, characterized in that, The touch film includes a silver paste area and a through-hole area. The through-hole area includes multiple through-holes, each of which corresponds to one of the LED beads. The silver paste area is provided with conductive silver paste and includes gaps between the through-holes.
5. The in-vehicle intelligent touch control device as described in claim 1, characterized in that, It further includes a bottom cover, which is located inside the PCBA, and the PCBA is fixedly mounted on the bottom cover.
6. The in-vehicle intelligent touch control device as described in claim 4, characterized in that, The number of the light-transmitting icons, the LED beads, the receiving slots, and the through holes are consistent and correspondingly set.