JP6633294B2 - Optical fiber warp knitted fabric and decorative articles using the same - Google Patents

Description

  The present invention is an improvement of a fabric product using an optical fiber as a yarn material, in particular, an optical fiber warp knitted fabric capable of displaying an arbitrary light emitting pattern by side leakage of an optical fiber in a stretchable warp knitted fabric, and The present invention relates to decorative articles using the same.

  As is well known, an optical fiber is composed of a core and a clad outside the core.By making the refractive index of the core larger than the refractive index of the clad, light incident on the core is transmitted at the interface between the core and the clad. Due to the total reflection or refraction that occurs, the light is propagated in a state where it is confined as much as possible to the core at the center.

  In addition, the above optical fiber is mainly used for long-distance transmission of light requiring high transmission efficiency, etc.In recent years, the surface of the clad has been damaged, or the material of the clad has been deliberately changed. Many decorative or display products using an optical fiber that allows light to leak from the side as a light emitter have been developed.

  For example, in the field of textiles, fabrics are manufactured using optical fibers as warps or wefts, and a shielding mask in which an arbitrary pattern is cut out is placed on the surface of the fabric, and surface treatment of the optical fibers is performed by spraying a drug or the like from the shielding mask. And a technique for causing the processing section to emit light in a planar manner has been proposed (see Patent Document 1).

  In addition, in a woven fabric using an optical fiber, a technique has been proposed in which a film yarn is embedded to form unevenness on the surface of the optical fiber to increase the amount of leaked light (see Patent Document 2). Since it is a fabric, the stretchability of the fabric is poor, and there is a problem in terms of functions and applications such as difficulty in following stretches of other fabrics when used for a part of clothes or the like.

  Further, in the above-mentioned conventional optical fiber fabric, the method of physically or chemically processing the surface of the optical fiber to leak light is employed, so that the quality of the optical fiber is likely to be unstable due to the accuracy of the processing, and that When a large number of recesses are formed, the strength becomes non-uniform, and a problem easily occurs in durability.

  On the other hand, although the paragraph number [0036] of Patent Document 3 discloses that an optical fiber having side surface light leakage is used as a monofilament as a yarn material of a knitted fabric, a case where the optical fiber is simply used as a ground knitting yarn of a knitted fabric is described. In this case, since the optical fiber is easily broken at the stitch (loop) portion, a problem occurs in terms of yield and durability.

JP 2006-0445706 A JP 2010-106407 A JP 2006-39287 A

  As described above, various fabrics using the optical fiber having the side light leakage property have been studied so far, but an optical fiber fabric of stable quality has not been realized industrially. The present invention is to solve such a problem of the prior art, and not only can express a clear light emitting pattern, but also has excellent durability and productivity, and an optical fiber warp knitted fabric, and a decorative article using the same. Is to provide.

  Means adopted by the inventor to solve the above technical problem will be described below with reference to the accompanying drawings.

  That is, in order to solve the above problems, the present invention is characterized in that an ordinary fiber is a ground knitting yarn and an optical fiber is formed by knitting an optical fiber warp knitted fabric as a warp insertion yarn or a weft insertion yarn. By the way, the “plain yarn” used in the present specification means a yarn material made of a chemical fiber, a natural fiber, or the like, and a material other than an optical fiber. It means an insertion yarn inserted in a zigzag shape across the wales.

  Further, in the present invention, the optical fiber inserted into the ground knitting structure is constrained and integrated by the vertically crossing ground knitting yarn, and the optical fiber is moved in the thickness direction of the ground knitting structure by the upper and lower transverse portions of the ground knitting yarn. The optical fiber can be prevented from coming off from the ground knitting structure by curving in a wavy manner.

  Still further, in the present invention, two optical fibers are separately inserted between the same wale of the ground knitting structure so as not to intersect while being arranged in the course direction, and further, the ground knitting yarn is included in the two optical fibers. By knitting so as to alternately cross only one optical fiber every one course or every predetermined number of courses, the optical fiber can be exposed on the ground knitted structure without unevenness.

  Further, in the present invention, a high-exposure area where the exposure of the optical fiber is relatively large is formed in a part of the ground knitting structure, and a pattern is expressed by this high-exposure area and other low-exposure areas. Thereby, decorativeness and a display function can be imparted.

  When forming the low-exposure region of the optical fiber, the optical fiber can be formed by partially covering the optical fiber with a structure composed of opaque yarns knitted on a ground knit structure. On the other hand, when the high exposure area of the optical fiber is formed, it can be formed by partially increasing the interval between the crossing portions of the ground knitting yarn crossing over the optical fiber.

  Still further, in the present invention, a high-exposure area where the exposure of the optical fiber is 50% or more and a low-exposure area where the exposure of the optical fiber is 10% or less (preferably 5%) or less are formed on the ground knitting structure. By increasing the exposure difference between the two, the pattern in the high exposure area can be more clearly recognized.

  On the other hand, in the present invention, a long floating portion not restricted by the ground knitting yarn is formed at an intermediate portion of the optical fiber inserted into the ground knitting structure, and the optical fiber is cut at the long floating portion to form a ground knitting structure. By providing a cut end of an optical fiber which is an entrance of a light source at an intermediate position of the above, light can be incident from other than both ends of the ground knitted structure. In addition, if the long floating portion and the light source are arranged at a predetermined interval in accordance with the light emission distance from the incident portion of the optical fiber, the whole body can emit light even with a long ground knitted structure.

  Still further, in the present invention, by arranging a thread-like or sheet-like glittering material having light diffusing or light-reflecting properties on the back side of the optical fiber inserted into the fabric, the surface side of the fabric is knitted. Can be increased. In addition, a color effect can be obtained by using a color glitter yarn or the like as the glitter material.

  Further, in the present invention, the surface of the optical fiber inserted into the ground knitting structure can be entirely or partially coated with a clear paint, a translucent colored paint, or an opaque paint having a different refractive index from the cladding layer. Specifically, the surface of the optical fiber can be partially covered with an opaque resin to reduce the amount of side leakage of the optical fiber, or the surface of the optical fiber can be made to emit colorful light by applying a translucent colored resin.

  Further, in the present invention, an optical fiber group inserted into the ground knitted fabric is extended on both sides of the optical fiber warp knitted fabric having the above-described structure, and a light source is arranged on the end face of a converging portion obtained by converging the ends of the optical fiber group. Can be used as decorations. Thereby, the decorative article in which the optical fiber warp knitted fabric and the light source are integrated can be easily attached to clothes, portable goods, and the like, and can be used in a wide range of applications.

  In the present invention, since an optical fiber having side leakage light is used as a warp insertion yarn (or a weft insertion yarn) and an ordinary yarn is knitted integrally as a ground knitting yarn to constitute an optical fiber warp knitted fabric, It can be easily manufactured with higher productivity than warp knitting technology. In addition, the arrangement of the optical fibers and the devising of the ground knitting structure make it easy to impart elasticity.

  Further, in the present invention, the method of emitting light from the damaged portion by damaging the surface of the optical fiber is not adopted, and since the optical fiber is used not as the ground knitting yarn but as the insertion yarn, the optical fiber is not damaged at the damaged portion or the stitch portion. There is little worry about breakage and it has excellent durability. Furthermore, according to the present invention, a uniform light emission pattern can be obtained because light spots of the optical fiber due to the size of the damaged portion do not occur.

  Further, in the optical fiber warp knitted fabric of the present invention, the surface of the optical fiber is partially covered with the ground knitting yarn traversing over the optical fiber, so that it is possible to prevent the surface of the optical fiber from being scratched and damaged. Moreover, if a transparent ordinary yarn is used as the ground knitting yarn, the light emission of the optical fiber will not be hindered, so that the portion where the optical fiber is inserted can emit light uniformly and brightly.

FIG. 2 is an organization diagram showing an organization structure of an optical fiber warp knitted fabric in Example 1 of the present invention. FIG. 2 is an organization diagram for each guide, showing an organization structure of the optical fiber warp knitted fabric in Example 1 of the present invention. FIG. 9 is an organization diagram showing an organization structure of a long floating portion of an optical fiber warp knitted fabric in Example 2 of the present invention. It is an organization chart according to each guide showing an organization structure of an optical fiber warp knitted fabric in Example 2 of the present invention. It is an organization chart for each guide showing the structure of the optical fiber warp knitted fabric in Example 3 of the present invention. It is the schematic which shows an example of pattern formation of the optical fiber warp knitted fabric in Example 4 of this invention. It is a schematic diagram showing the ornament in Example 5 of the present invention.

  Embodiments for carrying out the present invention will be described below in more detail with reference to the drawings.

"Example 1"
FIG. 1 shows the back side (sinker loop side) of the optical fiber warp knitted fabric 1 of the present embodiment. In this embodiment, the optical fiber warp knitted fabric 1 is manufactured by using the optical fiber 2 as the warp insertion yarn and integrally knitting using the plain yarn as the ground knitting yarn 3 and the weft insertion yarn 4. Further, in this embodiment, a ground knitting structure (chain stitch changing structure) is knitted from the weft insertion yarn 4 of the three-needle swing composed of the ground knitting yarn 3 and the ordinary yarn.

"Restriction of optical fiber"
In addition, the optical fiber 2 is inserted between each wale of the ground knitting structure, and the optical fiber 2 is bound and integrated by the ground knitting yarn 3 crossing vertically. The optical fiber 2 is curved in the thickness direction of the ground knitting structure by the upper and lower transverse portions of the ground knitting yarn 3 so that the optical fiber hardly comes off from the ground knitting structure.

"Parallel insertion of optical fiber"
Furthermore, in this embodiment, two optical fibers 2a and 2b are separately inserted between the same wale of the ground knitting structure so as not to intersect while being arranged in the course direction. Of the optical fibers, knit so that only one optical fiber is alternately traversed every predetermined number of courses (or every single course) so that the optical fiber is exposed evenly on the ground knitting structure. I have.

  More specifically, based on FIG. 1, one of the two inserted optical fibers 2a and 2b is configured so that the sinker loops 3A and 3B of the knitting yarn 3 cross the optical fiber 2a. As for the other optical fiber 2b, the sinker loops 3C and 3D similarly cross over the optical fiber 2b. The sinker loops 3A to 3D crossing over the optical fibers 2a and 2b can be appropriately arranged for each predetermined number of courses.

  Further, in this embodiment, two optical fibers 2 are arranged in parallel between the wales, but may be arranged one by one, or may be arranged not every between the wale but every few wales or only at the ears of the warp knitted fabric. It can be appropriately arranged in consideration of the design.

"Method of forming cross section of ground knitting yarn on optical fiber"
Next, a method of arranging the sinker loops traversing the optical fibers 2a and 2b for every predetermined number of courses will be briefly described with reference to FIG. First, FIG. 2 shows the structure of each of the guides of the optical fiber warp knitted fabric 1 of the present embodiment shown in FIG. 1, wherein the guides L1 and L2 are the structure of the ground knitting yarn 3, and the guides L3 and L4 are the structures of the optical fibers 2a and 2b. The structure, L5, is the structure of the weft insertion thread 4. Further, in this embodiment, the base knitting structure is formed by the chain stitch change structure of the guide L2 and the three needle insertion structure of the guide L5, using the guide L1 as the ear thread.

  In this embodiment, the sinker loop of the ground knitting yarn 3 crosses over the optical fiber 2a of the guide L4 by swaying the chain stitch changing structure of the guide L2 by one stitch to the right. On the other hand, since the sinker loop of the knitting yarn of the guide L2 does not cross in the portion where the chain stitches are continuous, the optical fiber 2a can be exposed in that portion. In the present embodiment, the front guide is formed as a chain stitch-changed structure, and the optical fiber 2 is used as the next guide, so that the optical fiber 2 is easily exposed to the warp knitted fabric.

"Method of alternately forming cross sections of ground knitting yarn on two optical fibers"
Further, in the present embodiment, the optical fiber 2b of the guide L3 is inserted into the guide L2 in the same direction by one stitch at the position where the chain stitch change structure of the guide L2 is swung one stitch to the right. Thread 3 is not crossed. Thereby, at the same time when the optical fiber 2b of the guide L3 returns between the original wales, the sinker loop of the ground knitting yarn 3 of the guide L2 does not cross over the optical fiber 2b of the guide L3, but only on the optical fiber 2a of the guide L4. Can be traversed. By alternately forming the insertion structure with the two optical fibers 2a and 2b, the crossing of the ground knitting yarn 3 across the sinker loop can be dispersed without being concentrated on only one side.

"How to adjust the distance between the crossing parts of the ground knitting yarn"
In addition, the exposed length of the optical fiber 2 (the interval between the transverse portions of the ground knitting yarn 3) can be adjusted by the length of the chain stitch portion. Specifically, in FIGS. 1 and 2, a plurality of crossing portions (sinker loops 3A and 3B) of the ground knitting yarn 3 crossing only on one optical fiber 2a and a ground knitting crossing only on the other optical fiber 2b A plurality of transverse portions (sinker loops 3C and 3D) of the yarn 3 are continuously formed, but the structure of the ground knitting yarn 3 of the guide L2 in FIG. Can be separated by keeping the organization back after several courses.

"Types of ground knitting yarn"
The ground knitting yarn 3 may be a fiber yarn that is usually used for warp knitting. In particular, with respect to the ground knitting yarn 3 traversing the optical fiber 2, the side leakage of the optical fiber causes the ground knitting yarn. It is preferable to use a filament material having excellent transparency and a fine fineness so as not to be largely shielded by 3.

"Material of optical fiber"
On the other hand, the optical fiber 2 only needs to have a side leakage property in which a part of light incident from the end of the optical fiber 2 leaks from the side surface of the optical fiber 2 and emits light. There is no particular limitation as long as light leaks from the side surface of the optical fiber 2 due to a difference in material or the like.

  In this embodiment, both the core and the clad are made of a transparent resin, and the refractive index of the resin of the core is made slightly larger than the refractive index of the clad, so that the incident light is partially reflected at the boundary between the core and the clad. Since the optical fiber 2 has a side leakage light that leaks to the side and emits light from the side surface of the optical fiber 2, the optical fiber 2 does not need to be physically or chemically treated, and is stable in quality.

  Specific examples of the resin of the core include polymethyl methacrylate (PMMA) having excellent transparency, and examples of the cladding resin include vinylidene fluoride, or a polymer containing tetrafluoroethylene or hexafluoropropylene in vinylidene fluoride. By doing so, it is possible to obtain an optical fiber 2 having a side leakage property that is stable in quality.

"Example 2"
Next, a second embodiment of the present invention will be described below with reference to FIGS. In this embodiment, a long floating portion which is not restrained by the ground knitting yarn 3 is formed at an intermediate portion of the optical fibers 2a and 2b inserted into the ground knitting structure, and the optical fiber is cut at the long floating portion to form a ground. By providing a cut end of the optical fiber which is an entrance of the light source at an intermediate position of the knitted structure, light can be incident from other than both ends of the ground knitted structure.

  Specifically, as shown in FIG. 3, the optical fiber 2 is partially integrated with the ground knitting structure including the ground knitting yarn 3 and the weft insertion yarn 4 in the range indicated by the reference numeral (a) in the optical fiber warp knitted fabric 1. On the other hand, in the range indicated by the reference numeral (b), chain knitting by the ground knitting yarn 3 is continued, and the optical fiber 2 is in a long floating state without being restrained by the ground knitting yarn 3.

  Then, the tissue in the range of the symbol (a) and the tissue in the range of the symbol (b) in FIG. 3 are alternately knitted at a predetermined length, and the boundary portion or the middle of the two tissues is cut in the width direction to obtain a ground stitch. The cut end of the optical fiber 2 is formed in a part (long floating part) not restrained by the tissue. Furthermore, by integrating a plurality of these optical fibers and integrating the cut ends, a light incident port can be efficiently formed.

In this example, an optical fiber warp knitted fabric 1 was obtained using a 24-gauge single Russell machine manufactured by KARL MAYER under the knitting conditions shown in Table 1 below.

  In the optical fiber warp knitted fabric 1 obtained as described above, the range knitted with the structure of (a) is integrally knitted with the knitted structure, and the range knitted with the structure of (b) is the knitted structure of the optical fiber 2. A long floating portion was formed, and the long floating portion was cut at the center in the length direction to form a cut end, and the cut end was converged to form a light entrance.

"Example 3"
Next, a third embodiment of the present invention will be described below with reference to FIG. In this embodiment, the optical fiber 2 is used not as a warp insertion yarn but as a weft insertion yarn, and is integrally knitted with the ground knitting yarn 3. Specifically, the guide L1 is a chain knitting structure of the ground knitting yarn 3 made of ordinary yarn, the guide L4 is formed with a three-needle traversing insertion yarn 4 made of ordinary yarn, and the guides L2 and L3 are optical fibers. In step 2, one or a plurality of optical fibers 2 are zigzag inserted into the warp knitted fabric with respect to the knitted fabric. Actually, since the optical fiber 2 has high rigidity, the optical fiber 2 has a curved shape, and can be arranged so as to draw a curved pattern in the warp knitted fabric. At the same time, the design effect can be obtained, and at the same time, since the optical fiber 2 is inserted in a curved shape, the stretchability of the ground knitting structure is not hindered.

  Since the guide L1 has many sinker loops of the ground knitting yarn 3 made of ordinary yarn traversing the optical fiber 2, the ground knitting yarn 3 is preferably a fiber yarn that is as transparent as possible and has a fine fineness. By setting the ground knitting structure to mesh knitting, lace knitting, or coarse density, the degree of exposure of the optical fiber 2 increases, and a high light emitting effect can be obtained.

"Example 4"
Next, a fourth embodiment of the present invention will be described below. In this embodiment, as shown in FIG. 6, a high-exposure area 5 where the exposure of the optical fiber 2 is relatively large on a part of the ground knitting structure, and an exposure of the optical fiber 2 that is higher than the high-exposure area 5. Is formed to form a pattern pattern on the ground knitting structure.

  Thus, the portion where the optical fiber 2 is to be exposed, that is, the high-exposure region 5 is formed as a pattern or a character, and light is incident from the entrance 8 in which the ends of the optical fiber 2 are gathered. Since light emission can be visually recognized, an effect such as a design effect or a display can be exhibited.

"How to form high and low exposure areas"
As a method for forming the low-exposure area 6, the optical fiber 2 is partially covered with a structure composed of an opaque yarn (a weft insertion yarn 7) knitted on a ground knit structure as in the present embodiment. Method can be adopted. At this time, the portion where the optical fiber 2 is to be exposed is not covered with the tissue, so that the high exposure region 5 can be obtained. On the other hand, the high-exposure region 5 can also be formed by partially increasing the interval between the crossing portions of the ground knitting yarn crossing over the optical fiber.

"Size of exposure"
Regarding the magnitude of the degree of exposure of the high-exposure area 5, it is desirable that the degree of exposure be as large as possible from the viewpoint of light emission of the optical fiber 2. However, the curl of the optical fiber 2 is 100% exposure, that is, without integration. For example, the arrangement of the optical fibers 2 may be disturbed due to, for example, the need to integrate the optical fibers 2 with the ground knitting yarn 3. The exposure of the high exposure area 5 is preferably 50% or more, more preferably 70% or more. .

  On the other hand, with respect to the magnitude of the exposure of the low exposure area 6, it is preferable that the exposure is as low as possible because the light emitting pattern or character can be clearly recognized, but in order to completely cover the optical fiber 2, the thick insertion thread 7 is preferable. Must be arranged at high density, and there is a problem that the weight and thickness of the warp knitted fabric itself increase, so that the exposure is preferably 10% or less, more preferably 5% or less.

  With respect to the method of calculating the exposure of the optical fiber 2 in the high exposure area 5 and the low exposure area 6, an enlarged copy is taken for each area, and the total area of the knitted fabric is occupied by S1 and the optical fiber 2 in the copy. Suppose that the total area is S2 and the degree of exposure is (S2 / S1) × 100.

"Example 5"
Next, a fifth embodiment of the present invention will be described below with reference to FIG. In this embodiment, on both sides of the optical fiber warp knitted fabric 1, the optical fibers 2,... Inserted into the ground knitting structure are extended, and the ends of the optical fibers 2, 2,. The light source 9 is arranged, and the light source 9 is further connected to the power supply unit 10 to form a decorative article.

  The plurality of optical fibers 2 extended from the optical fiber warp knitted fabric 1 are integrated by press-fitting their ends into a cylindrical body in a converged state, and irradiation from a light source 9 facing the end surface is performed. Thus, the side surface of the optical fiber 2 disposed in the optical fiber warp knitted fabric 1 can emit light.

  It is preferable that the end face of the optical fiber 2 be mirror-finished in order to efficiently receive the light emitted from the light source 9. Since the supply unit 10 can have a longer life or a lighter weight, it can be widely used as decorative articles such as clothes and portable articles.

  Further, examples of a method for attaching the decorative article of the optical fiber warp knitted fabric 1 to clothes or portable goods include a means for directly sewing, a means for detaching with a hook, a button, a chuck, or the like, and are particularly limited. Not something. In addition, by attaching the ornament of the optical fiber warp knitted fabric 1 to clothes, portable articles, and the like and emitting light, the ornament can be used in various ways such as decoration and accessories, or visual recognition and warning to a third party.

"Example 6"
Next, a sixth embodiment of the present invention will be described below. In the present embodiment, a thread-like or sheet-like glittering material having light diffusing or light-reflecting properties is arranged on the back side of the optical fiber inserted into the ground knitting structure, and the light knitting of the optical fiber is reflected to reflect the light leakage. The amount of light emitted to the surface side of the substrate can be increased (not shown). In addition, if a reflective material such as a color glitter yarn is used for the glitter material, a design effect can be exerted on the color surface.

"Example 7"
Next, a seventh embodiment of the present invention will be described below. In the present embodiment, the surface of the optical fiber inserted into the ground knitted structure is entirely or partially coated with a clear paint, a translucent colored paint, or an opaque paint having a refractive index different from that of the cladding layer (shown in the drawing). Zu). Specifically, the surface of the optical fiber is partially covered with an opaque resin to reduce light leakage at a portion where the resin is attached, or to completely shield the portion where the resin is not attached to emit light with an arbitrary pattern. be able to.

  In addition to using the opaque resin, a colored translucent colored resin may be applied to make the surface of the optical fiber emit colorful light. In addition, the method of attaching the paint to the surface of the optical fiber 2 is not particularly limited. However, a print processing method or an ink jet method can process a complicated pattern industrially at low cost.

  Although the present invention is generally configured as described above, the present invention is not limited to the illustrated embodiment, and various configurations are possible within the scope of the claims. In addition, various warp knitting structures such as tricot knitting, cord knitting, mesh knitting, and lace knitting can be adopted as well as the chain stitch changing structure.

DESCRIPTION OF SYMBOLS 1 Optical fiber warp knitted fabric 2 Optical fiber 3 Knitting yarn 3A-3D Sinker loop of knitting yarn 4 Insertion thread 5 High exposure area 6 Low exposure area 7 Pattern insertion thread 8 Optical fiber convergence part 9 Light source 10 Power supply part

Claims (9)

In an optical fiber warp knitted fabric in which a plain yarn is a ground knitting yarn and a side-leak optical fiber is vertically knitted as an insertion yarn, an intermediate portion of the optical fiber inserted into the ground knitting structure is restrained by the ground knitting yarn. An optical fiber characterized by forming a long floating portion that is not formed, cutting the optical fiber at the long floating portion, and providing a cut end of the optical fiber serving as an entrance of a light source at an intermediate position of the ground knitting structure. Warp knitted fabric. In an optical fiber warp knitted fabric in which a plain yarn is a ground knitting yarn and an optical fiber having side leakage light is vertically knitted as an insertion yarn , at least two optical fibers are arranged in the course direction between the same wales of the ground knitting structure. An optical fiber warp knitted fabric which is separately inserted so as not to intersect in a lined state, and further knitted so that a ground knitting yarn alternately crosses over each optical fiber every one course or every predetermined number of courses . . In an optical fiber warp knitted fabric in which a plain yarn is a ground knitting yarn and a side leakage optical fiber is vertically knitted as an insertion yarn, the degree of exposure of the optical fiber to a part of the ground knitting structure is relatively large. An exposure area is formed, and the pattern pattern is represented by the high exposure area and the other low exposure areas, while a plurality of horizontal swings made of opaque yarns knitted on the ground knitting structure have different widths. A low-exposure area is formed by partially covering the optical fiber with the insertion yarn, and a high-exposure area is formed by partially increasing the interval between the transverse portions of the transverse insertion yarn traversing the optical fiber. optical fiber warp knitted fabric, characterized in that there.   4. The optical fiber according to claim 3, wherein a high exposure area where the exposure of the optical fiber is 50% or more and a low exposure area where the exposure of the optical fiber is 10% or less are formed on the ground knitting structure. Warp knitted fabric.   The optical fiber inserted into the ground knitting fabric is restrained and integrated by the ground knitting yarn traversing up and down, and the optical fiber is wavyly curved in the thickness direction of the ground knitting structure by the upper and lower transverse portions of the ground knitting yarn. The optical fiber warp knitted fabric according to any one of claims 1 to 4, wherein: In an optical fiber warp knitted fabric integrally knitted with a plain yarn as a ground knitting yarn and a side leakage optical fiber as a weft insertion yarn, the intermediate knitting of the optical fiber inserted into the ground knitting structure is restrained by the ground knitting yarn. The optical fiber warp knitting is characterized in that the optical fiber is cut off at the long floating portion, and a cut end of the optical fiber serving as an entrance of the light source is provided at an intermediate position of the ground knitting structure . Earth.   7. A thread-like or sheet-like glittering material having a light diffusing property or a light reflecting property is arranged on the back side of the optical fiber inserted into the ground knitting structure. The optical fiber warp knitted fabric according to the above.   The surface of the optical fiber inserted into the ground knitting structure is entirely or partially coated with a clear paint, a translucent colored paint, or an opaque paint having a refractive index different from that of the clad layer. 8. The optical fiber warp knitted fabric according to any one of items 7 to 7.   An optical fiber group inserted into a ground knitted fabric extends on both sides of the optical fiber warp knitted fabric according to any one of claims 1 to 8, and a light source is provided on an end face of a converging portion obtained by converging the ends of the optical fiber group. A decorative article using an optical fiber warp knitted fabric characterized by being arranged.