JPS62206046A - Light emitting fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an illuminated decorative body used for interior decoration, displays, or other decorations.

[Conventional technology]

Optical fibers are used for various decorations and display devices because they can guide light incident from one end to the other end for illumination. Due to its structure, such optical fibers are scratched on the surface by bending the fibers.
It is known that light leaks, and by taking advantage of this property, the light guided inside the optical fiber can be emitted in a linear or planar shape, or the planar optical fiber can be partially leaked to create a pattern. It is also known from Japanese Patent Publication No. 47-42534 to emit light.

[Problem that the invention seeks to solve]

In the case of planar light emission, after forming a sheet of woven fabric etc., fine scratches are applied to the surface of the optical fiber by means such as rubbing to allow light to leak.However, when surface damage is applied after weaving, the entire surface of the fabric is damaged. Therefore, if optical fibers are arranged only on one of the warp or weft threads, there is a high risk of damaging the other thread, and there are many problems such as masking is required to form a pattern. Furthermore, when forming a pattern by chemical treatment such as a solvent, there are restrictions on the selection of the solvent, and both methods have many practical problems, such as the edges of the pattern becoming unclear. Although the light leakage method by bending is an effective method, the amount of light is attenuated greatly due to bending, making it difficult to emit light uniformly over the entire surface of the fabric, and it is difficult to form bends in a pattern due to restrictions on the structure of the fabric.

The present invention aims to solve these problems.

[Means for solving problems]

The present invention provides a surface emitting fabric characterized in that optical fibers are arranged in the warp and/or weft, and the fabric surface is formed with different textures in the length direction and/or width direction of the fabric. This is a summary.

The present invention will be explained in detail below.

The optical fiber used in the present invention is a fiber that has a light transmission function using light reflection, and has a core-sheath structure, and the refractive index of the sheath component is made smaller than the refractive index of the core component by υ. This is a known method that applies total reflection of light at the core-sheath interface. Either glass fiber or plastic fiber may be used, but if plastic fiber is used, it has excellent flexibility, making it easier to handle during weaving and in products.

FIG. 1 is a plan view showing a model of an example of the surface-emitting fabric of the present invention. (1) shows the warp, and (2) shows the weft. The A part of the fabric is a plain weave, and the B part is a satin weave.
) has a structure in which there are many floating parts of the weft (2) and less bending of the weft (2).

Therefore, the optical t! , a, and when the light is incident from one end, the plain weave part (4) has a large bend and is dense, so the light is blocked, and the satin weave part CB) has a small bend,
Moreover, since it is coarse, light leakage becomes weak, and only the plain weave portion emits light. In this case, by increasing the floating of the optical fibers in the satin weave portion CB), it is possible to achieve a state in which there is almost no light leakage. In addition, the plain weave part and the satin weave part (
The interval B) may be set arbitrarily (a twill portion may be provided if necessary).

The change in the weave structure is to form a state of intensity or presence of the light emitting part on the surface of the fabric, and is not limited to the structure in particular and can be any combination.

The principle is the same even when the warp (1) is an optical fiber, and in that case, there are two types of structures: plain weave, which has a lot of bending, and has a large light-opening property, and sateen weave, which has many floats in the warp, and which has little light leakage. It is possible to impart strength or weakness to the s-light by combining them.

Figure 2 is a cross-sectional view taken along Y-Y' in Figure 1, showing that the plain weave section (8) is in a state of great bending due to the intersection of the warp (1) and weft (2); In this case, the warp yarns have a large ups and downs and little bending.

Although FIG. 1 describes an example in which the structure of the fabric is changed only in the longitudinal direction of the fabric, the fabric may be changed in the width direction of the fabric, or it is also possible to change the structure in both directions.

Next, a method for manufacturing the surface emitting fabric of the present invention will be explained. The surface-emitting fabric of the present invention can be obtained by changing the weave structure to provide partial light-emitting points on the surface of the fabric due to differences in bending.

That is, the part with a lot of bending is made into a plain weave structure as shown in Figure 3, and the part with less bending is made into a satin weave as shown in Fig. 4. This can be obtained by changing the shedding motion of the warp threads in the section.

Although not shown, it is also possible to change the structure in the width direction of the fabric; in this case, a jacquard loom may be used. If a jacquard loom is used, each warp thread can freely move up and down, making it possible to create complex weaving structures.

In addition, when weaving, optical fibers generally have a large fineness;
Since it has high rigidity, it is necessary to consider the combination with one of the yarns. For example, when optical fibers are used for the weft, the optical fibers are used for warp (1
), it is necessary to increase the tension of the warp threads (1) or to use threads with high rigidity for the warp threads (1) themselves.

It is also effective to use light source fibers with low rigidity, such as those with a fine denier, to be inserted into the A section.

On the other hand, in areas where light leakage is not allowed, such as the CB portion, by using optical fibers with high rigidity, it is easy to prevent light leakage through the weft (2), which is hardly bent. In addition, when an optical fiber is used as the weft thread (2), the optical fiber may be cut at each weft insertion, and the converging end of the weft thread (2) may be used as a light incident part.

Next, the present invention will be specifically explained with reference to Examples.

〔Example〕

Example-1 A plastic optical fiber with a diameter of 5 mφ was used as the warp, and the weft Ko
A woven fabric having plain weave and satin weave textures alternating at 15-intervals was woven using a dobby loom using polypropylene heptofilament (bright) yarn of , zs■φ.

When one end of the warp threads of the obtained fabric was bundled and connected to a light source as a light input end, the plain weave texture part became a high brightness light emitting surface, and the satin weave texture part became a low brightness light emitting surface, creating a horizontal striped pattern in the warp direction of the fabric. It was a surface-emitting fabric.

Example 2 Using a jacquard machine, polyester multifilament crimped yarn (150d/48f) was used as the warp and [[
By repeating plain weave and satin weave at intervals of 20 cIN in each of the length and width directions of the fabric using L25wφ optical fibers, a fabric having 20 cIn2 rectangular light-emitting parts in a checkered pattern on the fabric surface was obtained.

When one end of the weft of this fabric was connected to a light source as a convergence end, the entire surface of the fabric emitted light in a checkered pattern with excellent brightness.

〔Effect of the invention〕

As described above, the surface emitting fabric of the present invention is produced by bending optical fibers in the length direction and/or width direction of the fabric in different textures on the fabric surface, so that the light emitting part due to bending is partially formed on the fabric surface. It is possible to form
This is a patterned surface emitting fabric with only bent parts. Therefore,
It is possible to emit light at a desired brightness from a desired part of the fabric surface, and since the light is emitted only by bending, the appearance of the fabric surface is remarkable, and the boundaries of the light-emitting areas are clear, making the pattern clearer, etc. , the effects of the present invention are significant.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a model of an example of the surface emitting fabric of the present invention, and FIG. 2 is a longitudinal section of the fabric. FIG. 3 and FIG. 4 show an example of the structure change when weaving the surface emitting fabric of the present invention. 1...Warp 2...Weft A...Plain weave part B...Satin weave part +f FXJ Sound 2 Zudai 3rd Life 4zu

Claims (1)

[Claims] A surface emitting fabric characterized in that optical fibers are arranged in the warp and/or weft, and the fabric surface is formed with different textures in the length direction and/or width direction of the fabric.