Light-permeable real wood interior trim part assembly
By combining a real wood translucent layer with a light-guiding layer, and utilizing prism and scattering dot microstructure design, the problem of insufficient texture and light transmission uniformity in existing translucent interior parts has been solved, achieving high light transmittance and uniformity while retaining the three-dimensional feel of natural wood grain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO SBL AUTO ACCESSORIES CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-24
AI Technical Summary
Existing translucent interior trims mostly use plastic or acrylic materials to simulate wood grain, which has a significantly different texture from real wood and insufficient uniformity of light transmission. Some translucent wood trims have low light transmittance and require thinning of the wood or chemical treatment, which affects the environment.
It combines a real wood light-transmitting layer with a light-guiding layer. The light-guiding layer contains prisms and scattering dot microstructures. The real wood light-transmitting layer is treated with lignin and then composited with transparent resin. The light source module provides uniform backlighting. The prism array is designed to match the wood grain to ensure uniform light diffusion.
It achieves a light transmittance of 60% to 80%, a light transmittance uniformity of more than 92%, retains the three-dimensionality of natural wood grain, avoids light and dark stripes and light spots, and avoids the problem of wood brittleness caused by chemical treatment.
Smart Images
Figure CN224159239U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of interior trim technology, specifically to a translucent real wood interior trim component. Background Technology
[0002] Real wood automotive interior trim was born with the rise of the automotive industry. Real wood brings people in the car a real tactile feel, a handcrafted feel, and a skin-friendly warmth, among other visual and tactile experiences. Because wood once had life, people subconsciously feel a sense of life's story and the passage of time. Real wood automotive interior trim has become an important part of the details of luxury cars, and it has also become a sought-after item for affordable automotive interior trim.
[0003] Existing translucent interior trim components mostly use plastic or acrylic materials, simulating wood grain through carving or printing. However, the texture differs significantly from real wood, and the uniformity of light transmission is insufficient. In addition, some translucent wood trim components achieve light transmission by processing wood into thin sheets and combining them with a backlight layer. However, the natural dense structure of wood results in low light transmittance, requiring excessive thinning of the wood at the expense of strength, or relying on chemical treatment to damage the wood fibers, which affects the environment. Therefore, we propose a translucent real wood interior trim component to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a translucent real wood interior trim component, which solves the problems mentioned in the background art.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a light-transmitting real wood interior trim component, including a substrate layer, a groove is formed on the upper surface of the substrate layer, a connecting hole is formed on the outer wall of the substrate layer, a light source module is arranged inside the groove, a light guide layer is arranged inside the groove, a real wood light-transmitting layer is fixedly connected to the upper surface of the substrate layer, and a surface protective layer is fixedly connected to the upper surface of the real wood light-transmitting layer.
[0006] The light source module is used to provide uniform backlight to the real wood translucent layer, and the light guide layer is used to uniformly diffuse the light from the light source module.
[0007] By adopting the above technical solution, the surface protective layer has anti-glare and anti-scratch functions. The light source module and the real wood light-transmitting layer are inseparable. The real wood light-transmitting layer is made of 0.5 mm oak veneer. After lignin removal treatment, the light transmittance is increased to 55%. After being impregnated with UV glue and cured, the hardness reaches two hours.
[0008] Furthermore, the light source module includes a heat dissipation substrate, a circuit board, an LED chip, and a USB connector. The lower surface of the heat dissipation substrate is fixedly installed inside the groove. The heat dissipation substrate is electrically connected to the circuit board, the circuit board is electrically connected to the LED chip, and the circuit board is electrically connected to the USB connector.
[0009] Furthermore, the light guide layer is located between the light source module and the real wood light-transmitting layer. The light guide layer includes a composite microstructure of prisms and scattering dots. The prisms are fixedly installed on the surface of the light guide layer, and the scattering dots are distributed in the gaps between the prisms and the near-end region of the light source.
[0010] Furthermore, the USB connector is fixedly installed inside the connection hole, and the circuit board and LED chip are located inside the recess.
[0011] By adopting the above technical solution, the LED chip of the light source module can dynamically adjust the light transmission color and brightness through the in-vehicle system, which can match different driving modes.
[0012] Furthermore, the prism apex angle is 90 to 180 degrees, the prisms are arranged in a matrix, the dot diameter of the scattering dots is 50 to 2 micrometers, and the light guide layer is a transparent optical grade material with a thickness of 0.5 to 2 millimeters.
[0013] By adopting the above technical solution, the density of the prism array varies according to the density gradient of the wood grain of the real wood light-transmitting layer, and the deviation between the long axis of the prism and the direction of the wood fiber is less than or equal to 15%. The prisms are arranged in a gradient along the longitudinal direction of the light guide layer, with the spacing increasing from the light source side to the far end. At the same time, the density gradient of the scattering dots decreases, so as to homogenize the light and eliminate hot spots. Through the combination design of the microprisms and scattering dots of the light guide layer, the light is aligned with the direction of the wood grain of the real wood light-transmitting layer, ensuring that the light diffuses evenly along the wood fiber channel.
[0014] Furthermore, the real wood translucent layer is composed of natural wood veneer treated with lignin removal and transparent resin, and the light transmittance of the real wood translucent layer is 30% to 70%. The surface protective layer contains nano-silica particles with a particle size of 10 to 50 nanometers and a solid content of 5% to 15%.
[0015] By adopting the above technical solution, the lignin removal treatment uses sodium chlorite to selectively remove lignin while retaining the cellulose skeleton. This can balance light transmittance and mechanical properties, avoid the wood embrittlement problem caused by traditional chemical light transmittance treatment, and the light transmittance is positively correlated with the clarity of the texture.
[0016] The beneficial effects of this utility model are:
[0017] 1. This translucent real wood interior trim component, through the setting of a light guide layer and a real wood translucent layer, the real wood light translucent layer, which is treated with lignin removal and resin reinforcement, has a light transmittance of 60% to 80%, while completely preserving the three-dimensional layering of natural wood grain. Through the prism array in the light guide layer and the matching design with the wood grain direction, the light is naturally diffused along the fiber, and the light transmission uniformity is greater than 92%, completely eliminating light and dark stripes and light spots.
[0018] 2. This translucent real wood interior trim component uses a light guide layer to evenly diffuse the light emitted by the light source module, avoiding bright and dark stripes. It also optimizes the light path and improves light transmission efficiency through prism arrays and scattering dots in the microstructure. At the same time, the light guide layer needs to work in conjunction with the real wood translucent layer to ensure that the light can naturally present the texture of the wood. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a partial cross-sectional view of the structure of this utility model.
[0022] Figure 3 This is a schematic diagram of the prism structure of this utility model.
[0023] Figure 4 This is a schematic diagram of the light source module structure of this utility model.
[0024] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.
[0025] Explanation of reference numerals in the attached drawings: 1. Substrate layer; 2. Groove; 3. Connecting hole; 4. Light source module; 41. Heat dissipation substrate; 42. Circuit board; 43. LED chip; 44. USB connector; 5. Light guide layer; 51. Prism; 52. Diffusing dots; 6. Real wood light-transmitting layer; 7. Surface protective layer. Detailed Implementation
[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0027] Please see Figure 1-5A translucent real wood interior trim component includes a substrate layer 1, a groove 2 formed on the upper surface of the substrate layer 1, a connecting hole 3 formed on the outer wall of the substrate layer 1, a light source module 4 disposed inside the groove 2, a light guide layer 5 disposed inside the groove 2, and a real wood translucent layer 6 fixedly connected to the upper surface of the substrate layer 1; through the setting of the light guide layer 5 and the real wood translucent layer 6, the real wood translucent layer 6, which has been treated with lignin removal and resin reinforcement, has a light transmittance of 60% to 80%, while completely preserving the three-dimensional layering of natural wood grain; The light guide layer 5 has a prism array 51 designed to match the wood grain direction, allowing light to diffuse naturally along the fibers. The light transmission uniformity is greater than 92%, completely eliminating bright and dark stripes and light spots. The upper surface of the real wood light-transmitting layer 6 is fixedly connected to the surface protective layer 7, which has anti-glare and scratch-resistant functions. The light source module 4 and the real wood light-transmitting layer 6 are inseparable. The real wood light-transmitting layer 6 is made of 0.5 mm oak veneer, and after lignin removal treatment, the light transmittance is increased to 55%. After being impregnated with UV glue and cured, the hardness reaches two hours.
[0028] The light source module 4 is used to provide uniform backlight to the real wood light-transmitting layer 6, and the light guide layer 5 is used to uniformly diffuse the light from the light source module 4.
[0029] Reference Figure 2 , 3 The light source module 4 shown in Figure 5 includes a heat dissipation substrate 41, a circuit board 42, an LED chip 43, and a USB connector 44. The lower surface of the heat dissipation substrate 41 is fixedly installed inside the groove 2. The heat dissipation substrate 41 is electrically connected to the circuit board 42, the circuit board 42 is electrically connected to the LED chip 43, and the circuit board 42 is electrically connected to the USB connector 44. The LED chip 43 of the light source module 4 supports dynamic adjustment of the light transmission color and brightness through the in-vehicle system, which can match different driving modes.
[0030] Reference Figure 2-5 The light guide layer 5 shown is located between the light source module 4 and the real wood light-transmitting layer 6. The light guide layer 5 is mainly used to evenly diffuse the light emitted by the light source module 4 to avoid the appearance of bright and dark stripes. It also optimizes the light path and improves the light transmission efficiency through the array of prisms 51 and scattering dots 52 in the microstructure. At the same time, the light guide layer 5 needs to cooperate with the real wood light-transmitting layer 6 to ensure that the light can naturally present the texture of the wood. The light guide layer 5 includes a composite microstructure of prisms 51 and scattering dots 52. The prisms 51 are fixedly installed on the surface of the light guide layer 5, and the scattering dots 52 are distributed in the gaps between the prisms 51 and the near-end area of the light source.
[0031] Reference Figure 2-5 The USB connector 44 is fixedly installed inside the connection hole 3, and the circuit board 42 and LED chip 43 are located inside the groove 2.
[0032] Reference Figure 2-5As shown, the prism 51 has an apex angle of 90 to 180 degrees and is arranged in a matrix. The dot diameter of the scattering dots 52 is 50 to 2 micrometers. The array density of the prism 51 varies according to the wood grain density gradient of the real wood light-transmitting layer 6, and the deviation between the long axis of the prism 51 and the direction of the wood fibers is less than or equal to 15%. The prisms 51 are arranged in a gradient along the longitudinal direction of the light guide layer 5, with the spacing increasing from the light source side to the far end. At the same time, the light is homogenized and hot spots are eliminated by the decreasing density gradient of the scattering dots 52. Through the combined design of the microprisms 51 and scattering dots 52 in the light guide layer 5, the light is aligned with the wood grain direction of the real wood light-transmitting layer 6, ensuring that the light diffuses evenly along the wood fiber channel. The light guide layer 5 is a transparent optical grade material with a thickness of 0.5 to 2 millimeters.
[0033] Reference Figure 1 , 2 As shown, the real wood translucent layer 6 is composed of natural wood veneer treated with delignification and transparent resin. The light transmittance of the real wood translucent layer 6 is 30% to 70%. The delignification treatment uses sodium chlorite to selectively remove lignin while retaining the cellulose skeleton, which can balance light transmittance and mechanical properties and avoid the wood brittleness problem caused by traditional chemical light transmittance treatment. The light transmittance is positively correlated with the clarity of the texture. The surface protective layer 7 contains nano-silica particles with a particle size of 10 to 50 nanometers and a solid content of 5% to 15%.
[0034] When in use, the light-transmitting layer 6 of real wood, which has been treated with lignin removal and resin reinforcement, has a light transmittance of 60% to 80%, while fully preserving the three-dimensional layering of natural wood grain. The prism array 51 in the light guide layer 5 is designed to match the direction of the wood grain, so that the light diffuses naturally along the fibers, and the light transmission uniformity is greater than 92%, completely eliminating bright and dark stripes and light spots. The light guide layer 5 is mainly used to evenly diffuse the light emitted by the light source module 4 to avoid the appearance of bright and dark stripes. It also optimizes the light path and improves the light transmission efficiency through the prism array 51 and scattering dots 52 in the microstructure. At the same time, the light guide layer 5 needs to work in conjunction with the real wood light-transmitting layer 6 to ensure that the light can naturally present the texture of the wood.
[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A translucent real wood interior trim component assembly, comprising a substrate layer (1), characterized in that: The upper surface of the substrate layer (1) is provided with a groove (2), the outer wall of the substrate layer (1) is provided with a connection hole (3), a light source module (4) is provided inside the groove (2), a light guide layer (5) is provided inside the groove (2), a real wood light-transmitting layer (6) is fixedly connected to the upper surface of the substrate layer (1), and a surface protective layer (7) is fixedly connected to the upper surface of the real wood light-transmitting layer (6). The light source module (4) is used to provide uniform backlight to the real wood light-transmitting layer (6), and the light guide layer (5) is used to uniformly diffuse the light from the light source module (4).
2. The translucent real wood interior trim component assembly according to claim 1, characterized in that: The light source module (4) includes a heat dissipation substrate (41), a circuit board (42), an LED chip (43), and a USB connector (44). The lower surface of the heat dissipation substrate (41) is fixedly installed inside the groove (2). The heat dissipation substrate (41) is electrically connected to the circuit board (42). The circuit board (42) is electrically connected to the LED chip (43). The circuit board (42) is electrically connected to the USB connector (44).
3. The translucent real wood interior trim component according to claim 2, characterized in that: The light guide layer (5) is located between the light source module (4) and the real wood light-transmitting layer (6). The light guide layer (5) includes a composite microstructure of prisms (51) and scattering dots (52). The prisms (51) are fixedly installed on the surface of the light guide layer (5), and the scattering dots (52) are distributed in the gaps between the prisms (51) and the near-end region of the light source.
4. The translucent real wood interior trim component assembly according to claim 3, characterized in that: The USB connector (44) is fixedly installed inside the connection hole (3), and the circuit board (42) and LED chip (43) are located inside the groove (2).
5. A translucent real wood interior trim component assembly according to claim 4, characterized in that: The apex angle of the prism (51) is 90 to 180 degrees. The prisms (51) are arranged in a matrix. The dot diameter of the scattering dots (52) is 50 to 2 micrometers. The light guide layer (5) is a transparent optical grade material with a thickness of 0.5 to 2 millimeters.
6. A translucent real wood interior trim component assembly according to claim 5, characterized in that: The real wood translucent layer (6) is composed of natural wood veneer treated with lignin removal and transparent resin. The light transmittance of the real wood translucent layer (6) is 30% to 70%. The surface protective layer (7) contains nano-silica particles with a particle size of 10 to 50 nanometers and a solid content of 5% to 15%.