Automobile flexible luminescent material and preparation method thereof
By using flexible automotive luminescent materials that interweave polymer optical fiber weft yarns and polyester warp yarns, the design limitations and high costs of traditional ambient lighting have been solved, achieving uniform luminescence and personalized automotive interior design effects.
Patent Information
- Application Number
- CN202511380011.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2025-11-11
AI Technical Summary
Traditional automotive ambient lighting has limitations in terms of shape and pattern design, making it difficult to meet the diverse needs of consumers. It is also costly, and fiber optic fabrics have poor light emission uniformity, requiring destructive processing to maintain brightness.
The material uses a light-emitting fabric layer interwoven with polymer optical fiber weft yarn and polyester warp yarn. The tension adjustment area is designed with increasing distance. It is combined with transparent adhesive bonding and LED lamp beads and heat dissipation aluminum substrate. Water-soluble yarn is used to dissolve the warp to form a flexible light-emitting material for automobiles.
It improves the uniformity of the luminescent fabric and the heat dissipation of the LED beads, reduces costs, and enables personalized design while maintaining uniform brightness in the luminescent area.
Smart Images
Figure CN120921783A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive interior technology, specifically to a flexible luminescent material for automobiles and its preparation method. Background Technology
[0002] With the development of the automotive industry and the increasing demand for personalization from consumers, the creation of a unique interior environment in automobiles has become increasingly important. Ambient lighting, as a decorative element that adds a unique atmosphere to the interior space of a car, has become an indispensable part of modern automotive design. Traditional automotive ambient lighting is usually achieved through LED light strips or point light sources. Although it can create the desired atmosphere to a certain extent, it has significant limitations in terms of shape and pattern design, making it difficult to meet consumers' needs for diverse and personalized designs. Furthermore, traditional ambient lighting requires a large number of LEDs to achieve full-vehicle ambient lighting coverage, increasing the probability of damage and the cost. Illuminated fabrics can meet the above requirements and are widely used. However, fiber optic lighting uses a braided extrusion method to make the fiber optic fabric emit diffuse reflection light. Traditional braiding methods require extruding the fiber optics under the same tension after warping, resulting in uniform bending of the extruded fiber optics. It is necessary to perform strong damage to the back end of the fiber optic fabric to maintain uniform brightness with the front end; otherwise, the brightness of the fiber optics will gradually decrease. Summary of the Invention
[0003] The purpose of this invention is to provide a flexible luminescent material for automobiles and its preparation method, so as to manufacture automotive interiors that better meet market demands.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a flexible luminescent material for automobiles, comprising a decorative layer, a light-transmitting fabric layer, a luminescent fabric layer, and a flexible base layer bonded together from the outside to the inside by adhesive. The luminescent fabric layer is composed of multiple warp and weft yarns interwoven together. The weft yarn is a polymer optical fiber, and at least one end of the weft yarn passes through an optical fiber bundle tube and is connected to a light source. The warp yarn is divided into several adjacent tension adjustment regions along the length direction of the weft yarn. The tension of adjacent tension adjustment regions increases from small to large according to the distance from the light source.
[0005] Furthermore, in the aforementioned flexible luminescent automotive material, the adhesive is a transparent adhesive.
[0006] Furthermore, in the aforementioned flexible luminescent automotive material, the decorative layer is one or more of PVC skin, TPO skin, PU skin, silicone skin, and knitted fabric, and is processed with light-transmitting holes.
[0007] Furthermore, in the aforementioned flexible luminescent material for automobiles, the flexible substrate layer is made of an elastic material.
[0008] Furthermore, in the aforementioned flexible automotive light-emitting material, the light source includes a plurality of LED beads disposed on a heat-dissipating aluminum substrate via lamp holders. The surface of each LED bead is covered with a focusing lens and connected to a corresponding optical fiber bundle tube.
[0009] Another technical solution provided by this invention: a method for preparing a flexible luminescent material for automobiles, comprising the following steps: Step 1: Using polymer optical fiber as the weft and water-soluble yarn and polyester yarn as the warp, a fabric is woven on a loom to form a luminescent fabric layer, wherein the water-soluble yarn is located on both sides of the polyester yarn along the length of the weft yarn; Step 2: Adhere the light-transmitting fabric layer and the flexible substrate layer to both sides of the light-emitting fabric layer using transparent adhesive; Step 3: Adhere the decorative layer to the side of the translucent fabric layer away from the luminescent fabric layer using transparent adhesive; Step 4: Dissolve the water-soluble yarn, and then insert the exposed polymer optical fiber into the optical fiber bundle tube and connect it to the light source to form a flexible light-emitting material for automobiles.
[0010] Furthermore, in the above-mentioned preparation method of automotive flexible light-emitting material, the dissolution temperature of water-soluble yarn is 35~45℃.
[0011] Furthermore, in the above-mentioned method for preparing flexible automotive luminescent materials, the density of the polyester yarn is 600D.
[0012] Furthermore, in the above-mentioned method for preparing flexible automotive luminescent materials, the tension of each polyester yarn is individually controlled by a warp yarn frame.
[0013] Furthermore, in the above-mentioned method for preparing flexible automotive luminescent materials, the polyester yarn within the same tension adjustment region has the same tension.
[0014] Compared with the prior art, the beneficial effects of the present invention are: This flexible luminescent material for automobiles improves the uniformity of light emission by controlling the tension of adjacent tension adjustment areas to increase from small to large distance from the light source.
[0015] This flexible luminescent material for automobiles features LED beads mounted on a heat-dissipating aluminum substrate via a lamp holder. The LED beads can be replaced individually, and the heat-dissipating aluminum substrate improves the heat dissipation of the light source. Furthermore, the LED beads are connected to an optical fiber bundle tube via a focusing lens, which enhances the light focusing performance of the LED beads.
[0016] The preparation method of this flexible luminescent material for automobiles utilizes water-soluble yarn for warping to improve the weavability of the luminescent fabric, and dissolves the water-soluble yarn in warm water at 35~45℃ to avoid the inefficiency of manual peeling and damage to the surface of the optical fiber. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the flexible luminescent material for automobiles in a specific embodiment of the present invention.
[0018] Figure 2 This is a schematic diagram of the weaving of warp and weft yarns in a specific embodiment of the present invention.
[0019] Figure 3 This is a schematic diagram of the warp frame in a specific embodiment of the present invention.
[0020] Figure 4 This is a schematic diagram of the structure of the light source in a specific embodiment of the present invention.
[0021] In the diagram: 1. Decorative layer; 2. Translucent fabric layer; 3. Luminous fabric layer; 31. Weft yarn; 32. Water-soluble yarn; 33. Polyester yarn; 4. Flexible base layer; 5. Light source; 51. Lamp holder; 52. Heat dissipation aluminum substrate; 53. LED beads; 54. Condensing lens; 6. Warp frame; 61. Tensioner. Detailed Implementation
[0022] To prepare automotive interiors that better meet the growing needs of users in more aspects, this invention designs a flexible luminescent material for automobiles, see reference. Figures 1 to 4 It includes a decorative layer 1, a light-transmitting fabric layer 2, a light-emitting fabric layer 3, and a flexible base layer 4, which are bonded together with adhesive from the outside to the inside. The light-emitting fabric layer 3 is made of multiple warp and weft yarns interwoven together. The weft yarn is a polymer optical fiber, and at least one end of it passes through an optical fiber bundle tube and is connected to the light source 5. The warp yarn is divided into several adjacent tension adjustment areas along the length of the weft yarn. The tension of the adjacent tension adjustment areas increases from small to large according to the distance from the light source 5.
[0023] In a preferred embodiment, the adhesive is a transparent adhesive.
[0024] In a preferred embodiment, the decorative layer 1 is one or more of PVC skin, TPO skin, PU skin, silicone skin and knitted fabric, and is processed with light-transmitting holes. The light-transmitting holes can be arranged arbitrarily according to the light-emitting requirements and can form personalized patterns, etc.
[0025] In a preferred embodiment, the flexible substrate 4 is made of an elastic material.
[0026] In a preferred embodiment, the light source 5 includes a plurality of LED beads disposed on a heat-dissipating aluminum substrate via lamp holders. The surface of the LED beads is covered with a focusing lens and connected to a corresponding optical fiber bundle tube.
[0027] The specific preparation method of the flexible luminescent material for automobiles of the present invention can be referred to the following steps: Step 1: Using polymer optical fiber as the weft and water-soluble yarn and polyester yarn as the warp, a fabric is woven on a loom to form a luminescent fabric layer 3, wherein the water-soluble yarn is located on both sides of the polyester yarn along the length of the weft yarn. Step 2: Adhere the light-transmitting fabric layer 2 and the flexible base layer 4 to both sides of the light-emitting fabric layer 3 using transparent adhesive; Step 3: Adhere the decorative layer 1 to the side of the translucent fabric layer 2 away from the light-emitting fabric layer 3 using transparent glue; Step 4: Dissolve the water-soluble yarn, and then insert the exposed polymer optical fiber into the optical fiber bundle tube and connect it to the light source 5 to form a flexible light-emitting material for automobiles.
[0028] In a preferred embodiment, the dissolution temperature of the water-soluble yarn is 35~45°C.
[0029] In a preferred embodiment, the polyester yarn has a density of 600D.
[0030] In a preferred embodiment, the tension of each polyester yarn is individually controlled by a warp creel.
[0031] In a preferred embodiment, the polyester yarn tension is the same within the same tension adjustment area.
[0032] Example Step 1: Using polymer optical fiber as the weft and water-soluble yarn and polyester yarn as the warp, a fabric is woven on a loom to form a luminescent fabric layer 3. The water-soluble yarn is located on both sides of the polyester yarn along the length of the weft yarn; the 30cm on both sides is a non-luminescent area, and the water-soluble yarn is the warp yarn of the non-luminescent area, using 10-count compact spinning. The middle 60cm is the luminescent area, and the warp yarn of the luminescent area is made of 600D polyester yarn. The polyester yarn uses a warp frame 6, and each warp yarn has an individual tensioner 61 to control the tension. The tensioner 61 is divided into ten levels, from level one to level ten, dividing the luminescent area into six tension adjustment areas. The tension in the tension adjustment area closest to the light source 5 is level one, and the tension of adjacent tension adjustment areas increases from small to large according to the distance from the light source 5, that is, the tension of the sixth tension adjustment area is level six. The brightness of the tension adjustment area closest to the light source 5 in the luminescent fabric layer 3 was 6 cd / m², with no significant attenuation every ten centimeters. The brightness at the end of the tension adjustment area furthest from the light source 5 was 5.5 cd / m², and the overall uniformity was consistent.
[0033] Step 2: Adhere the light-transmitting fabric layer 2 and the flexible base layer 4 to both sides of the light-emitting fabric layer 3 with transparent adhesive. The adhesive should not obstruct the transmission of light. The light-transmitting fabric layer 2 can be made of existing transparent materials or light-transmitting fabrics with 3D structures. The flexible base layer 4 can be made of elastic materials such as sponge to improve the overall feel of the automotive flexible light-emitting material. Step 3: Adhere the decorative layer 1 to the side of the light-transmitting fabric layer 2 away from the light-emitting fabric layer 3 using transparent adhesive. The decorative layer 1 is one or more of PVC skin, TPO skin, PU skin, silicone skin and knitted fabric, and is processed with light-transmitting holes. The decorative layer 1 is determined according to the vehicle interior and meets the overall design requirements of the vehicle interior. Step 4: Immerse the water-soluble yarn in 40℃ water for 5 minutes. The water-soluble yarn will dissolve. Then, the exposed polymer optical fiber is threaded into the optical fiber bundle tube and connected to the light source 5 to form a flexible automotive light-emitting material. Water-soluble yarn is used to warp both sides of the light-emitting area to prevent the polyester yarn at the edge of the light-emitting area from becoming scattered, ensuring the effective area of the light-emitting area. This also avoids damage to the optical fiber caused by manual peeling after the fabric layer is woven. Simultaneously, the exposed optical fiber after the water-soluble yarn dissolves is connected to the light source 5 through the optical fiber bundle tube, facilitating the adjustment of the light source 5's position. That is, the light source 5 does not need to be tightly attached to the edge of the light-emitting area. In practical applications, the width of the water-soluble yarn involved in the weaving can be adjusted according to the light source's position. The location of the light source 5 is determined by the fiber optic bundle tube. The dissolution temperature of the water-soluble yarn should not be too high to avoid damaging the surface of the optical fiber. The light source 5 includes several LED beads 53 that are set on the heat dissipation aluminum substrate 52 through lamp holders 51. The surface of the LED beads 53 is covered with a focusing lens 54 and connected to the corresponding fiber optic bundle tube through conventional connectors. The LED beads 53 are connected to the lamp holder through detachable structures such as threaded connections, which facilitates the arrangement or replacement of LED beads 53. The heat dissipation aluminum substrate 52 improves the heat dissipation effect of the light source 5, and the LED beads 53 are connected to the fiber optic bundle tube through the focusing lens 54 to improve the focusing performance of the LED beads 53.
[0034] Comparative Example The warp yarns of the luminescent fabric layer 3 are woven with the same five tension levels. The brightness of the optical fiber decreases from 6.5 cd / m² at the head (the end closer to the light source 5) to 0.5 cd / m² every 10 centimeters. At the end of the optical fiber (the end farther from the light source 5), the brightness is only about 3 cd / m², showing a significant decrease.
[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
[0036] Any aspects of this invention not described in detail are well-known to those skilled in the art.
Claims
1. A flexible luminescent material for automobiles, characterized in that: The material comprises, from the outside to the inside, a decorative layer, a light-transmitting fabric layer, a light-emitting fabric layer, and a flexible base layer, all bonded together with adhesive. The light-emitting fabric layer is composed of multiple interwoven warp and weft yarns. The weft yarns are polymer optical fibers, with at least one end passing through an optical fiber bundle tube and connected to a light source. The warp yarns are divided into several adjacent tension adjustment regions along the length of the weft yarns, and the tension of adjacent tension adjustment regions increases from small to large according to their distance from the light source.
2. The flexible luminescent material for automobiles according to claim 1, characterized in that: The adhesive is transparent.
3. The flexible luminescent material for automobiles according to claim 1, characterized in that: The decorative layer is one or more of PVC skin, TPO skin, PU skin, silicone skin and knitted fabric, and is processed with light-transmitting holes.
4. The flexible luminescent material for automobiles according to claim 1, characterized in that: The flexible substrate layer is made of an elastic material.
5. The flexible luminescent material for automobiles according to claim 1, characterized in that: The light source includes a plurality of LED beads disposed on a heat-dissipating aluminum substrate via lamp holders. The surface of each LED bead is covered with a focusing lens and connected to a corresponding optical fiber bundle tube.
6. A method for preparing a flexible luminescent material for automobiles as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Using polymer optical fiber as the weft and water-soluble yarn and polyester yarn as the warp, a fabric is woven on a loom to form a luminescent fabric layer, wherein the water-soluble yarn is located on both sides of the polyester yarn along the length of the weft yarn; Step 2: Adhere the light-transmitting fabric layer and the flexible substrate layer to both sides of the light-emitting fabric layer using transparent adhesive; Step 3: Adhere the decorative layer to the side of the translucent fabric layer away from the luminescent fabric layer using transparent adhesive; Step 4: Dissolve the water-soluble yarn, and then insert the exposed polymer optical fiber into the optical fiber bundle tube and connect it to the light source to form a flexible light-emitting material for automobiles.
7. The method for preparing a flexible luminescent material for automobiles according to claim 6, characterized in that, The dissolution temperature of the water-soluble yarn is 35~45℃.
8. The preparation method according to claim 6, characterized in that: The density of the polyester yarn is 600D.
9. The preparation method according to claim 8, characterized in that: Each of the polyester yarns has its tension individually controlled via a warp beam.
10. The preparation method according to claim 9, characterized in that: The polyester yarn tension is the same within the same tension adjustment area.