JPH08160228A - Light emitting cord body - Google Patents

Abstract

PURPOSE: To provide a light emitting cord which gives the taste of an optical fiber sufficiently and easily provides a variety of light emission states and depth and can emit light over a wide range with a small number of optical fibers. CONSTITUTION: One stranded braid 8 is constituted by stranding plural stranded threads each consisting of a single optical fiber 5 and a single dummy light- transmissive fiber 6 and plural stranded braids 8 are used and stranded to constitute a light emission part 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting cord using an optical fiber.

[0002]

2. Description of the Related Art Recently, various interiors using optical fibers have been put to practical use as interiors for general households and businesses. Usually, in the interior using the optical fiber, the tip of the optical fiber is arranged at the portion where light is desired to be emitted, and light is radiated to the base end of the optical fiber to transmit the light through the optical fiber so that the tip of the optical fiber is transmitted. The part is configured to emit light. However, with the above-mentioned structure, since light is emitted only at the tip of the optical fiber, there is a problem that an extremely large number of optical fibers are required in order to emit light over a wide range.

On the other hand, it is known that when an optical fiber is bent, light leaks from the bent portion to emit light.
As in the light emitting rope disclosed in Japanese Utility Model Laid-Open No. 63-80504, an optical fiber is provided in a twisted shape around the rope, and the whole is covered with a transparent transparent material so that the optical fiber emits light linearly. Therefore, there has been proposed a structure configured to reduce the number of optical fibers as much as possible.

However, even in the light emitting rope described in the above publication, since the optical fiber is simply provided around the rope in a twisted shape, the texture of the optical fiber as a fiber cannot be sufficiently drawn out. It is also possible to change the light intensity of the light emitting rope in the lengthwise direction by changing the twist density of the optical fiber, but since the winding method of the optical fiber is simple, it is difficult to make changes in the light emitting pattern and it is not interesting. There was a problem. Furthermore,
In order to keep the shape of the optical fiber in a twisted state and to receive the load acting on the light emitting rope, it is necessary to provide a rope that hardly contributes to light emission in the center of the light emitting rope,
Since it was not possible to emit light from the center of the light emitting rope, it was difficult to achieve deep light emission.

Therefore, the applicant of the present invention is
No. 42765), by using a twisted yarn in which an optical fiber and a fiber having a light-transmitting property are twisted together as a light emitting portion, a light emitting string body that can bring out the texture of the fiber of the optical fiber and realize deep light emission is provided. Proposed.

[0006]

However, even in the light emitting cord body, it cannot be said that the texture as the fiber of the optical fiber has been sufficiently drawn out because the twisting method is simple, and there is a change in the light emitting pattern. It was difficult to do and included the problem of lack of interest. An object of the present invention is to provide a light emitting cord body that can sufficiently draw out the texture as a fiber of an optical fiber, easily give a change or depth to a light emitting state, and can emit light in a wide range with a small number.

[0007]

According to a first aspect of the present invention, there is provided a light emitting cord body comprising a plurality of single-held braids obtained by twisting an optical fiber single yarn and a dummy single yarn made of a translucent fiber. It is equipped with a light emitting part consisting of braids that are assembled together. According to a second aspect of the present invention, in a light emitting cord body, a plurality of twisted yarns obtained by twisting an optical fiber single yarn and a dummy single yarn made of a fiber having a light-transmitting property are twisted together to form a single-held braid. It is provided with a light-emitting part which is composed of braids assembled by holding a plurality of braids. A light emitting cord according to a third aspect is provided with a light emitting portion formed of a braid that is assembled by using an optical fiber single yarn and a dummy single yarn made of a light-transmitting fiber.

[0008]

In the light emitting cord according to the first aspect of the invention, since the optical fiber single yarn and the dummy single yarn are twisted together, and the light emitting portion is assembled by using a plurality of single braids that are twisted together,
The single fiber of the optical fiber is bent in a wave shape in the light emitting portion. Therefore, when light is irradiated to the end of the optical fiber single yarn, light leaks from the bent portion of the optical fiber single yarn and the entire optical fiber single yarn emits light, and part of the light leaked from the optical fiber single yarn hits the dummy single yarn. The light is reflected or diffused in the dummy single yarn and diffusely reflected in the dummy single yarn, and the entire light emitting portion emits light.

Further, since the light emitting portion is formed by assembling the optical fiber single yarn and the dummy single yarn in the braid, it is possible to sufficiently bring out the texture of the optical fiber in the light emitting portion as a fiber. Further, by making light of different colors incident on each of the optical fiber single yarns of the braids having a plurality of patterns, various patterns can be obtained, and the light emitting pattern of the light emitting portion can be variously changed by changing the way of assembling. It becomes possible. Further, since the optical fiber single yarn and the dummy single yarn are arranged also in the central portion of the light emitting portion, light is emitted also from the central portion of the light emitting portion, so that deep light emission can be realized.

In the light emitting cord according to claim 2, a twisted yarn obtained by twisting an optical fiber single yarn and a dummy single yarn is used.
Multiple braids are twisted together to form one braid,
Since the light emitting portion is assembled by using a plurality of braids that are held, the same effect as that of the first aspect can be obtained. In addition, since the twisted yarns are further twisted together to form the braided yarn, the twisting back of the braided yarn is prevented, and the workability in assembling the light emitting portion can be improved. In the light emitting cord according to the third aspect, since the light emitting portion is assembled into the braid by using the optical fiber single yarn and the dummy single yarn made of the fiber having the light transmitting property, the same effect as that of the first aspect can be obtained. can get.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the light emitting cord 1 is basically composed of a light emitting portion 2 and a lead portion 3, and an end portion of the lead portion 3 is arranged so as to face the light source 4 and light from the light source 4 is emitted. , Is transmitted to the light emitting unit 2 through the lead unit 3.

The light emitting part 2 is composed of 24 optical fiber single yarns 5.
And 72 dummy single yarns 6 made of translucent fiber
The optical fiber single yarn 5 and the dummy single yarn 6 are assembled into a braid. Specifically, as shown in FIG. 2 and FIG. 3, one optical fiber single yarn 5 and three dummy single yarns 6 are twisted together to produce a twisted yarn 7, and three twisted yarns 7 are twisted together to form 1 A braided yarn (hereinafter, simply referred to as a braided yarn) 8 that is held is produced, and the braided yarn 8 is used to assemble the known "Kitayama" braiding method. still,
The numbers of the optical fiber single yarns 5 and the dummy single yarns 6 constituting the twisted yarn 7 and the number of the twisted yarns 7 constituting the braided yarn 8 can be set arbitrarily. In addition, as a method of assembling, various methods other than “Kitayama” such as “tinsai”, “Edo”, “two people still”, “matsukasa”, and “turtle shell” are possible.

The 24 optical fiber single yarns 5 are led out from the end portion of the light emitting portion 2, and the led optical fiber single yarns 5 thus formed constitute the lead portion 3. The three dummy single yarns 6 that compose the twisted yarn 7 are obtained by folding one strand of wire into three, and loops 9 (see FIG. 1) are formed at both ends of the twisted yarn 7. A hook can be engaged with the loop 9 for twisting at the time of manufacturing, or a ball can be easily attached by passing a string through the loop 9 when assembling the light emitting unit 2. However, as the dummy single yarn 6, mere three strands may be used.

The optical fiber single yarn 5 is composed of an optical fiber made of an acrylic synthetic resin material such as polymethylmethacrylate resin. As the optical fiber single yarn 5, it is preferable to use one having a diameter of 0.5 to 0.75 mm in order to bring out the texture of the fiber, but one having a diameter other than this may be used. The dummy single yarn 6 is composed of a transparent transparent fiber such as nylon, fluorocarbon, or Kepler. However, a tube-shaped or tape-shaped cord may be used as long as it has flexibility and translucency.

Next, the operation and effect of the light emitting cord 1 will be described. Since the twisted yarn 7 in which the optical fiber single yarn 5 and the dummy single yarn 6 are twisted together is further twisted to form a braided yarn 8, and the braided yarn 8 is assembled to "Kitayama" to produce the light emitting section 2. The optical fiber single yarn 5 is bent into a wavy shape in the light emitting section 2. Therefore, when the end portion of the optical fiber single yarn 5 is irradiated with light, the light leaks from the bent portion of the optical fiber single yarn 5 and the entire optical fiber single yarn 5 emits light, and a part of the light leaked from the optical fiber single yarn 5 is emitted. The dummy single yarn 6 will be reflected and reflected, or will enter the dummy single yarn 6 and will be irregularly reflected, and the whole light emitting part 2 will emit light.

For this reason, it is possible to emit light over a wide range while reducing the number of the single fibers 5 of the optical fiber. Moreover, since the number of the optical fiber single yarns 5 in the lead portion 3 is reduced, the wiring process is facilitated. Furthermore,
Since the braided yarn 8 is formed by twisting twice in the direction as shown in FIG. 2, the twisting back of the braided yarn 8 when the light emitting unit 2 is assembled is prevented. Further, since the twisting back is prevented, the assembled optical fiber single yarn 5 is always held in a constant bent state, so that stable light emission can be obtained.

Further, the optical fiber single yarn 5 and the dummy single yarn 6
Since the light emitting section 2 is constructed by assembling the cords with each other, the flexibility of the light emitting section 2 is sufficiently secured, and the texture of the optical fiber as a fiber can be sufficiently drawn out. Further, by making light of different colors incident on each of the optical fiber single yarns 5 of the braided yarns 8 having eight patterns, various patterns can be created, and the light emitting pattern of the light emitting unit 2 can be changed by changing the assembling method. It is possible to make various changes. Further, since light is emitted also from the central portion of the light emitting portion 2, deep light emission can be realized.

The light-emitting string 1 is a band fastening using a braid, a haori string, various decorative knots, a light-emitting portion of a lighting fixture,
It can be used as a costume accessory such as a wedding dress, a lighting advertisement, a display portion such as a sign, and a wall decoration of a building. Further, since the light emitting cord 1 is basically made of a synthetic resin material, there is no fear of electric leakage and it is also excellent in water resistance, so that it can be used for underwater decorations and the like.

As shown in FIG. 4, lead portions 3 are provided at both ends of the light emitting cord 1, and the ends of both lead portions 3 are connected to the light source 4.
May be disposed so as to face each other, and light may be transmitted from both lead portions 3 to the light emitting portion 2, respectively. Further, with respect to the twisted yarn 7, fibers or yarns other than the single yarns 5 and 6, for example, a light-reflecting fiber such as a metal wire or a lame yarn may be twisted at the same time to change the light emission. Further, the single yarns 5 and 6 may be colored to improve the decorative property during light emission, and sufficient decorative property may be obtained even in the non-light emitting state.

As the braid 8, the optical fiber single yarn 5 and the dummy single yarn 6 may be twisted together to produce one braid, and the light emitting portion 2 may be assembled by using a plurality of braids. However, in this case, the twist of the braided yarn may return, so it is preferable to perform heat treatment or the like, or to prevent the twist from returning with an adhesive or the like. It is also possible to fabricate the light emitting unit 2 simply by assembling the optical fiber single yarn 5 and the dummy single yarn 6 into a braid.

[0021]

According to the light emitting cord of the present invention, the optical fiber single yarn is bent in a wavy shape in the light emitting portion, so that the entire optical fiber single yarn linearly emits light and the light leaked from the optical fiber single yarn. When a part of the light hits the dummy single yarn and is reflected, or enters the dummy single yarn and is irregularly reflected, the entire light emitting portion emits light. Therefore, it is possible to emit light over a wide range while reducing the number of single fibers of the optical fiber.

Further, without providing a rope or the like at the center,
With the dummy single yarn that contributes to light emission, it is possible to sufficiently secure the tensile strength and the like of the light emitting portion. Further, by making light of different colors incident on each of the optical fiber single yarns of the braids having a plurality of patterns, various patterns can be obtained, and the light emitting pattern of the light emitting portion can be variously changed by changing the way of assembling. It becomes possible. Further, since light is emitted also from the central portion of the light emitting portion, deep light emission can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a light emitting cord.

FIG. 2 is an exploded perspective view showing a method for producing a braided yarn.

FIG. 3 is an enlarged perspective view of a main part of a braided yarn.

FIG. 4 is an explanatory diagram showing another example of a light transmission method.

[Explanation of symbols]

 1 Luminous string 6 Dummy single yarn 2 Light emitting part 7 Twisted yarn 3 Lead part 8 Braided yarn 4 Light source 9 Loop 5 Optical fiber single yarn

Claims (3)

[Claims] 1. A light-emitting device including a light-emitting portion, which is composed of braids that are assembled by using a plurality of single-held braids obtained by twisting an optical fiber single yarn and a dummy single yarn made of a fiber having a light-transmitting property. String. 2. A plurality of sets of twisted yarns obtained by twisting a single fiber of an optical fiber and a dummy single yarn made of a fiber having a light-transmitting property are twisted together to form a braid of one holding A luminescent cord body that includes a luminescent part that is composed of braids that are assembled by holding multiple pieces. 3. A light emitting cord body comprising a light emitting portion made of a braid assembled by using an optical fiber single yarn and a dummy single yarn made of a fiber having a light transmitting property.