JP2024007712A - Woven fabric and interior material for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a woven fabric capable of efficiently emitting light, and an interior material for vehicles.

SOLUTION: A woven fabric 4 is a fabric woven with a plurality of first yarns 10 and a plurality of second yarns 20 so that the plurality of first yarns 10 extend in a front-back direction X and the plurality of second yarns 20 extend in a vertical direction Y intersecting with the front-back direction X. The first yarn 10 has a core 11 for guiding light in the front-back direction X, and a clad 12 for covering a surface 11A of the core 11. The clad 12 has an emitting part 13 that is recessed at a surface 12A of the clad 12 and emits the light guided by the core 11 to the outside of the first yarn 10. The plurality of first yarns 10 are woven so that a plurality of emitting parts 13 appear on a surface 4A side on an inner side of a vehicle compartment of the woven fabric 4.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present disclosure relates to woven fabrics and vehicle interior materials.

BACKGROUND ART Conventionally, a technique described in Patent Document 1 has been known as a woven fabric containing optical fibers (optical fiber fabric). Specifically, Patent Document 1 discloses a woven fabric in which a weft yarn containing an optical fiber having a two-layer structure of a core and a sheath (cladding) and a regular yarn are woven together. When light from an LED light source enters one end of this optical fiber, one surface (front surface) and the other surface (back surface) of the woven fabric will be in a state of emitting light.

Japanese Patent Application Publication No. 2010-267573

However, in the configuration disclosed in Patent Document 1, when one side is used as a design surface, for example, when the other side is attached to a structure, light emission on the other side is not necessarily necessary, and the light emission may be wasted. If light can be efficiently emitted from one surface without emitting light (or suppressing light emission) from the other surface, the brightness on one surface can be increased. This extends the distance that optical fibers can guide light, making it easier to improve the design of woven fabrics, and also reducing the output of the light source, saving energy, reducing heat generation, and reducing costs. becomes possible.

The present disclosure is a technology completed based on the above circumstances, and aims to provide a woven fabric that can efficiently emit light and an interior material for a vehicle.

The present disclosure provides a woven fabric in which a plurality of first yarns and a plurality of first yarns extend in a first direction, and a plurality of second yarns extend in a second direction intersecting the first direction. The first thread includes a core that guides light in the first direction, and a cladding that covers the surface of the core, and the cladding includes a core that guides light in the first direction and a cladding that covers the surface of the core. , the plurality of first threads are provided with a light emitting part that is recessed from the surface of the cladding and that emits the light guided by the core to the outside of the first thread, and the plurality of first threads have the light emitting part on one surface side of the woven fabric. It is a woven fabric that is woven with multiple parts.

According to such a configuration, the plurality of first threads are woven into the plurality of second threads in such a manner that a plurality of light emitting portions appear on one side of the woven fabric, so that light is emitted on one side of the fabric. It is possible to use a woven fabric that emits light (emit light) and does not emit light on the other side (or has lower brightness on the other side than on one side). Thereby, it is possible to provide a woven fabric that can efficiently emit light on one side.

In the above configuration, the first thread may be configured such that the plurality of emitting portions are lined up in the second direction on the surface of the cladding.

Depending on the position provided in the second direction (the circumferential direction of the cladding) on the surface of the cladding, the light emitting section may emit light obliquely (rather than perpendicularly) to one surface, for example. Therefore, there is a possibility that a light emission defect that causes a decrease in brightness may occur. However, according to the above-mentioned woven fabric, by arranging a plurality of emitting portions in the second direction on the surface of the cladding, it is possible to suppress the occurrence of the above-mentioned light emission defect and to emit light more efficiently.

In the above configuration, the first yarn is configured such that a plurality of the emission parts are lined up in the first direction on the surface of the cladding, and among the plurality of emission parts, two adjacent emission parts are The distance therebetween may be smaller as the core is placed farther away from the light source that produces the light guided by the core.

According to such a woven fabric, as the distance from the light source increases, the plurality of emitting sections are arranged closer together, so that it is possible to prevent the brightness from decreasing as the distance from the light source increases. Further, for example, it becomes possible to emit light with uniform brightness over one entire surface of the woven fabric.

In the above configuration, the output portion may be recessed from the surface of the cladding to the surface of the core.

According to such a woven fabric, the light guided by the core can be easily emitted from the cladding, and the brightness can be improved.

In the above configuration, the emission portion may be a depression formed by laser irradiation.

The surface of the first thread (the surface of the cladding) constituting the cloth-like woven fabric is relatively small. However, according to the above-described woven fabric, even the light emitting portion provided on the surface of such a relatively small first thread can emit light with high precision.

Further, the present disclosure includes a trim portion to which the woven fabric is attached, and the plurality of first yarns are woven in such a manner that a plurality of the emission portions appear on a surface side of the trim portion on the inside side of the vehicle. , is an interior material for vehicles.

According to such a configuration, it is possible to provide a vehicle interior material that efficiently emits light inside the vehicle interior and can improve the design.

According to the present disclosure, it is possible to provide a woven fabric that can efficiently emit light and a vehicle interior material.

A diagram of the door trim according to Embodiment 1 seen from inside the vehicle interior. Schematic diagram showing a light emitting device Enlarged view of part of the woven fabric seen from inside the vehicle interior A cross-sectional view of a part of the woven fabric (IV-IV line cross section in Figure 3) Diagram showing how the emission part is formed by laser irradiation Schematic diagram showing a light emitting device according to Embodiment 2

<Embodiment 1>
Embodiment 1 of the present disclosure will be described with reference to FIGS. 1 to 5. In this embodiment, a door trim (vehicle interior material) 100 attached to a door of an automobile (vehicle) and a woven fabric 4 will be described. Note that the arrow X direction is the front-rear direction (first direction), the arrow Y direction is the up-down direction (second direction that intersects the first direction), and the arrow Z direction is the inside-outside direction of the vehicle interior. In FIGS. 1 to 3, the front side of the page is the inside of the vehicle, and the back side of the page is the outside of the vehicle. In FIGS. 4 and 5, the upper side is the inside of the vehicle, and the lower side is the outside of the vehicle.

As shown in FIG. 1, the door trim 100 is made of resin such as polypropylene, and includes a plate-shaped trim part 1, a woven fabric 4 attached to the trim part 1 by pasting it using an adhesive, etc. Equipped with. The trim portion 1 is divided into a plurality of plate members, such as a lower board 1A, a middle board 1B, and an upper board 1C, which are assembled together to form one plate-like body as a whole. Note that the trim portion 1 does not need to be divided into a plurality of plate members, and its configuration is not particularly limited.

The woven fabric 4 has one surface (the surface on the inside of the vehicle interior) 4A and the other surface (the surface on the outside of the vehicle interior) 4B (see FIG. 4) that is the side surface of the interior of the vehicle of the upper board 1C of the trim part 1. It is attached using adhesive or the like. As shown in FIGS. 2 and 3, the woven fabric 4 has a plurality of first yarns 10 extending in the front-rear direction (first direction) The plurality of first threads 10 and the plurality of second threads 20 are woven together to form a cloth-like shape so as to extend in the Y direction. The method of weaving the woven fabric 4 is not particularly limited, and for example, plain weave, diagonal weave, satin weave, etc. can be adopted.

As shown in FIG. 2, the woven fabric 4 constitutes a light emitting device 2 together with a light source (LED) 3. The plurality of first threads 10 are bundled at one end 10A and are close to the light source 3. The light emitting device 2 allows the light generated by the light source 3 to enter from one end 10A of the plurality of first threads 10, and emits the light from one surface 4A of the woven fabric 4 toward the vehicle interior side. The configuration is such that 4A emits light. The woven fabric 4 decorates the trim portion 1 by emitting light to improve the design, and is used, for example, as a decorative member, a skin material, or the like. The light source 3 is attached, for example, to the exterior side surface of the vehicle interior of the trim portion 1. In addition, in FIG. 2 (and FIG. 6), the position of the emission part 13 described later is schematically described, and in reality, as shown in FIG. It is formed.

As shown in FIG. 4, the first thread 10 includes a core 11 that guides the light generated from the light source 3 in the front-rear direction It is said to be equipped with optical fiber. The material for the core 11 is not particularly limited as long as it can guide light, but for example, acrylic resin can be used. The material for the cladding 12 is not particularly limited as long as it has a lower refractive index than the core 11, but for example, a fluorine-containing resin can be used. The material for the second yarn 20 is not particularly limited, but for example, polyethylene terephthalate (PET) resin can be used. The first thread 10 and the second thread 20 may be a single thread, or a plurality of threads may be twisted to form one thread.

The diameter of the cross section in the radial direction of the core 11 is not particularly limited, but may be, for example, 50 μm or more, 100 μm or more, 150 μm or more, 500 μm or less, 300 μm or less, 250 μm or less. or 200 μm. The thickness of the cladding 12 (height from the surface 11A of the core 11) is not particularly limited, but may be, for example, 1 μm or more, 3 μm or more, 5 μm or more, 40 μm or less, 35 μm or less. The thickness may be 25 μm or less. According to such a configuration, the first thread 10 can have the output portion 13 that can suitably output the guided light.

As shown in FIGS. 3 and 4, the clad 12 has a recess (a hole-like hole formed in the thickness direction of the clad 12) extending from a surface 12A of the clad 12 on the passenger compartment side to a surface 11A of the core 11. , a plurality of emitting sections 13 that emit the light guided by the core 11 to the outside of the first thread 10. The plurality of first yarns 10 are emitted from one surface 4A side of the woven fabric 4 (see FIG. 2) and toward the interior side surface of the trim part 1 (the interior side surface 1C1 of the upper board 1C). It is woven in such a way that a plurality of portions 13 appear. In the present embodiment, the emission part 13 is not formed on the back surface 12B, which is the surface of the cladding 12 on the outside of the vehicle interior. Incidentally, the emission part 13 may be formed on the back surface 12B of the cladding 12, but in that case, the number of emission parts 13 is smaller on the back surface 12B than on the front surface 12A of the cladding 12. do. The diameter (hole diameter) of the emission part 13 is not particularly limited, but may be 5 μm or more, 10 μm or more, 15 μm or more, 40 μm or less, 30 μm or less, or 25 μm or less. , 20 μm.

As shown in FIGS. 2 to 4, the first yarn 10 is configured such that a plurality of emission parts 13 are lined up along the front-rear direction X and the up-down direction Y on the surface 12A of the cladding 12. As shown in FIG. 2, among the plurality of emission parts 13, the distance between two adjacent emission parts becomes smaller as the two emission parts are arranged farther away from the light source 3. Specifically, among the plurality of emission parts 13, when those arranged along vertically extending straight lines E, F, and G are defined as a first group 13E, a second group 13F, and a third group 13G, respectively, the first group 13E, the second group 13F, and the third group 13G The distance L2 between the second group 13F and the third group 13G is smaller than the distance L1 between the first group 13E and the second group 13F (the distance L2 between straight line F and straight line G is smaller than straight line E and the straight line F). Note that the second group 13F is a row of a plurality of emission parts 13 arranged at a position farther from the light source 3 than the first group 13E. The third group 13G is a row of a plurality of emission parts 13 arranged at a position farther from the light source 3 than the second group 13F.

As shown in FIG. 3, on the surface 12A of one first thread 10, there are a plurality of emission parts 13 lined up along the vertical direction Y, including a first emission part 13A, a second emission part 13B, and A third emission section 13C is provided. The second emission section 13B is provided between the first emission section 13A and the third emission section 13C. Any three emission parts 13A, 13B, 13C (these are shown as 13M) arranged in the vertical direction Y on the surface 12A of one first thread 10 are connected to the It is lined up along the vertical direction Y with the three emitting parts 13A, 13B, 13C (these are shown as 13N) of the thread 10, and is on the same straight line (for example, on the straight line such as straight lines E, F, G in FIG. 2). It is located in

As shown in FIG. 5, the woven fabric 4 undergoes a first step of producing a cloth body 5 and a second step of producing the woven fabric 4 by irradiating one surface of the cloth body 5 with a laser. It is manufactured by In the first step, the first thread 10 and the second thread 20 are woven into a cloth using a loom to produce the cloth body 5. In the second step, the laser device 30 is used to irradiate a laser onto one surface of the fabric body 5 (the surface of the fabric 4 on the vehicle interior side) to form a plurality of emitting portions 13. Manufacture. The emission part 13 is a depression formed by laser irradiation from the laser device 30.

The laser device 30 includes a laser generation section 31 that generates a laser beam, and a scanner section 32 that has a reflection section 33 and a lens 34 . The scanner section 32 irradiates the cloth body 5 with the laser at an arbitrary position by reflecting the laser generated from the laser generating section 31 in an arbitrary direction by the reflecting section 33 and emitting it to the outside from the lens 34 . When the surface 12A of the cladding 12 is irradiated with a laser, the irradiated portion is melted, evaporated, etc., thereby forming the emission part 13. The laser irradiated onto the cloth body 5 from the laser device 30 can have a wavelength of 342 nm and a pulse width of 200 fs, for example. According to such a configuration, a plurality of emission parts 13 can be suitably formed in the cladding 12. Moreover, it is possible to suppress damage to the core 11 and the second yarn 20 due to laser irradiation.

Next, the effects of this embodiment will be explained. In the present embodiment, in the woven fabric 4, the plurality of first yarns 10 extend in the front-rear direction The thread 10 and a plurality of second threads 20 are woven into a cloth shape, and the first thread 10 has a core 11 that guides light in the front-rear direction X, and a clad 12 that covers the surface 11A of the core 11. , the cladding 12 includes an emitting section 13 that is recessed from the surface 12A of the cladding 12 and emits the light guided by the core 11 to the outside of the first thread 10, and the plurality of first threads 10 The woven fabric 4 is shown in which a plurality of emission parts 13 are woven on the surface 4A of the woven fabric 4 on the vehicle interior side.

According to such a configuration, the plurality of first threads 10 are woven into the plurality of second threads 20 in such a manner that a plurality of emission parts 13 are exposed on the side 4A of the woven fabric 4 on the passenger compartment side. Light is emitted (emitted) on the side of the surface 4A on the inside of the vehicle interior, and no light is emitted on the side of the other surface 4B (or the brightness of the other surface 4B side is lowered than that on the side of the surface 4A on the inside of the vehicle interior). It can be a woven fabric 4. Thereby, it is possible to provide the woven fabric 4 that can efficiently emit light on the surface 4A side on the inside of the vehicle interior.

The first yarn 10 is configured such that a plurality of emission parts 13 are arranged in the vertical direction Y on the surface 12A of the cladding 12.

Depending on the position provided in the vertical direction Y (circumferential direction of the clad 12) on the surface 12A of the cladding 12, the emitting section 13 emits light obliquely (not perpendicularly) to the surface 12A on the inside of the vehicle interior, for example. There is a possibility that a defective light emission may occur, such as a partial decrease in brightness due to the emission of light. However, according to the woven fabric 4 described above, by arranging the plurality of emission parts 13 in the vertical direction Y on the surface 12A of the cladding 12, it is possible to suppress the occurrence of the above-mentioned light emission defects and to emit light more efficiently. can.

The first yarn 10 is configured such that a plurality of emitting portions 13 are arranged side by side in the front-rear direction The farther away the light source 3 is from the light source 3 that produces the light, the smaller the distance therebetween.

According to such a woven fabric 4, as the distance from the light source 3 increases, the plurality of emitting portions 13 are arranged closer together, so that it is possible to prevent the brightness from decreasing as the distance from the light source 3 increases. Furthermore, for example, it is possible to emit light with uniform brightness over the entire surface 4A of the fabric 4 on the passenger compartment side.

The output portion 13 is recessed from the surface 12A of the cladding 12 to the surface 11A of the core 11.

According to such a woven fabric 4, the light guided by the core 11 is easily emitted from the cladding 12, and the brightness can be improved.

The emission part 13 is a depression formed by laser irradiation.

The surface of the first yarn 10 (the surface 12A of the cladding 12) constituting the cloth-like woven fabric 4 is relatively small. However, according to the above-described woven fabric 4, even the light emitting portion 13 provided on the surface 12A of the relatively small first thread 10 can emit light with high precision. .

Further, in this embodiment, the trim part 1 is provided with the woven fabric 4 attached thereto, and the plurality of first threads 10 have a plurality of emission parts 13 appearing on the side of the interior side surface 1C1 of the trim part 1. The door trim 100 is shown as being woven.

According to such a configuration, it is possible to provide the door trim 100 that efficiently emits light on the inside of the vehicle interior and can improve the design.

<Embodiment 2>
Next, Embodiment 2 of the present disclosure will be described with reference to FIG. 6. In addition, in this embodiment, the same reference numerals are used for the same parts as in the above embodiment, and overlapping explanations regarding structure, operation, and effect will be omitted.

The woven fabric 104 has a plurality of first threads 110 extending in the front-rear direction (first direction) X, and a plurality of second threads 20 extending in the vertical direction (second direction intersecting the first direction) Y. The first thread 110 and the plurality of second threads 20 are woven together to form a cloth-like shape. The first thread 110 is an optical fiber consisting of a core and a cladding covering the core. The first yarn 110 includes a plurality of emitting portions 113 that are recessed from the surface of the cladding and from which light guided through the core is emitted. The woven fabric 104 constitutes the light emitting device 102 together with the light source 3.

The woven fabric 104 includes a first part 113A having a plurality of light emitting parts 113, and a second part 113B having a plurality of light emitting parts 113 and disposed at a position farther from the light source 3 than the first part 113A. It is classified. In the first part 113A, the plurality of emission parts 113 are arranged at equal intervals in the front-rear direction and the up-down direction. In the first section 113A, the positions of the emission sections 113 in an arbitrary row (the emission sections 113 arranged in the vertical direction) are staggered (shifted in the vertical direction) with respect to the emission sections 113 in the rows located on the front and rear sides thereof. It is arranged like this. In the second portion 113B, as in the first embodiment, the distance between two adjacent emitting portions among the plurality of emitting portions 113 becomes smaller as the two emitting portions are located farther from the light source 3.

<Other embodiments>
The present disclosure is not limited to the embodiments described above and illustrated in the drawings; for example, the following embodiments are also included within the technical scope of the present disclosure, and various modifications other than those described below may be made without departing from the spirit of the disclosure. It can be implemented by

(1) In addition to the embodiments described above, the configuration of the first yarn can be changed as appropriate. For example, the core may consist of two layers: a first core and a second core that covers the surface of the first core. Further, the first yarn may include a plurality of linear cores. Furthermore, the first thread may be formed by twisting an optical fiber and a thread other than the optical fiber.

(2) The woven fabric may be woven together with other threads in addition to the first thread and the second thread to form a cloth-like shape. For example, the woven fabric may include a plurality of first threads and a plurality of third threads such that a plurality of first threads and a plurality of third threads extend in a first direction, and a plurality of second threads and a plurality of fourth threads extend in a second direction. The two threads, the plurality of third threads, and the plurality of fourth threads may be woven together to form a cloth. The woven fabric may be woven so that other threads such as a third thread and a fourth thread are arranged on the back side (surface on the outside of the vehicle interior) of the first thread (optical fiber).

(3) In the above embodiment, there are three emission parts (first emission part, second emission part, and third emission part) formed along the vertical direction on the surface of one first thread. , but not limited to. For example, on the surface of one first thread, the number of emission parts formed along the vertical direction may be two, four, or five or more. It should be noted that the more emitting portions are formed along the vertical direction on the surface of one first thread, the more light emitting defects caused by obliquely emitting light can be suppressed, and the more efficiently light can be emitted.

(4) In the above embodiment, a door trim is illustrated as an example of a vehicle interior material, but the present invention is not limited thereto. Examples of vehicle interior materials include quarter trims, side trims, instrument panels, ceiling materials, pillar garnishes, and other interior materials.

(5) The woven fabrics and vehicle interior materials exemplified in the above embodiments are not limited to vehicles, and may be provided in various vehicles. For example, the above-mentioned woven fabrics and vehicle interior materials can be applied to vehicles such as trains and recreational vehicles as ground vehicles, airplanes and helicopters as flying vehicles, and ships and submarines as vehicles on the sea and under the sea. be able to.

(6) The woven fabrics exemplified in the above embodiments can be used not only as interior materials for vehicles but also as fabrics for side walls of buildings, houses, facilities, buildings, etc., and decorative fabrics for furniture, etc.

DESCRIPTION OF SYMBOLS 1... Trim part, 3... Light source, 4,104... Woven fabric, 10,110... First thread, 11... Core, 12... Clad, 13,113... Emitting part, 20... Second thread, 100... Door trim (vehicle) interior material), X...front-back direction (first direction), Y...up-down direction (second direction)

Claims (6)

A woven fabric,
A cloth in which a plurality of first threads and a plurality of second threads are woven so that a plurality of first threads extend in a first direction and a plurality of second threads extend in a second direction intersecting the first direction. It is shaped like
The first thread is
a core that guides light in the first direction;
A cladding that covers the surface of the core,
The cladding includes an emitting part that is recessed from the surface of the cladding and that emits the light guided by the core to the outside of the first thread,
A woven fabric in which the plurality of first threads are woven in such a manner that a plurality of the emission parts appear on one surface side of the woven fabric. The woven fabric according to claim 1, wherein the first yarn is configured such that a plurality of the emitting portions are lined up in the second direction on the surface of the cladding. The first yarn is configured such that a plurality of the emission parts are arranged in the first direction on the surface of the cladding,
2. The distance between two adjacent output units among the plurality of output units decreases as the output units are located further away from a light source that generates light guided by the core. The woven fabric according to item 2. The woven fabric according to claim 1 or 2, wherein the emission portion is recessed from the surface of the clad to the surface of the core. The woven fabric according to claim 1 or 2, wherein the emission part is a depression formed by laser irradiation. A trim part to which the woven fabric according to claim 1 or 2 is attached,
The plurality of first threads are woven in such a manner that a plurality of the emitting portions are exposed on the surface of the trim portion on the vehicle interior side.

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