JP2000123644A - Cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely identify a cable even in a dark place by arranging a fluorescent pigment material which develops color by irradiation of black light in a covering material. SOLUTION: Black light is invisible light obtained by filtering light having specific wave length (near ultraviolet rays : wave length λ=300 nm-450 nm) generating from a mercury lamp with an ultraviolet ray filter. Product name Lumilight Color produced by Sinloihi Co., Ltd. for example is listed as fluorescent pigment. In this electric cable 1, by irradiating black light, the fluorescent pigment emits light (develops color), and existence of the electric capable 1 is easily identified. By using color development difference for every cable, many cables are individually identified even in a dark place. A sheath material 5 is formed in the form of a colored transparent body containing colored pigment, and the fluorescent pigment may furthermore be contained in each sheath material 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable for supplying power and transmitting various electric or optical signals, and more particularly, a cable which emits light of a specific wavelength to emit a predetermined color. It is about.

[0002]

2. Description of the Related Art Various types of electric cables are commercially available from home use to business use according to their uses. The number used for home use is at most a few to several tens, but for commercial facilities such as concert venues and studios, it depends on the size of the equipment, but if it is large, several hundred Also. For this reason, it is necessary to identify the electric cable in order to facilitate the connection confirmation and the like.

As an example of the identification method, FIG.
As shown in FIG. 1, a name plate 7 on which characters and symbols can be arbitrarily written is attached near the connector C of the electric cable 1 or a color code 5a is attached to the covering material 5 of the cable 1 so as to be identified. ing.

[0004]

This kind of identification method is
Although it is certainly effective in a bright place, for example, in a dark place such as a concert hall or a so-called dark place or in a narrow place, it is difficult to see the identification of the corner.

[0005] Therefore, in a dark place or a narrow place such as a concert hall or a studio, in order to find a target cable from a large number of wired electric cables, it is necessary to pull the cables one by one by hand or use a light or the like. The surroundings were illuminated, which was extremely inconvenient. In addition, in a particularly dark place, regardless of the number of cables, unexpected accidents such as falling with a cable hooked on a foot or the like have occurred.

The present invention has been made to solve such a problem, and its object is to solve the problem even in a dark place.
Not only can you identify the cable reliably,
For example, in a concert hall or the like, it is an object of the present invention to provide a cable which can be added to the effect of the stage.

[0007]

In order to achieve the above object, the present invention relates to a power supply or signal transmission cable in which a core wire is covered with an electrically insulating covering material. It is characterized in that a fluorescent pigment material which develops a color by irradiation is provided.

Black light is light having a specific wavelength (near ultraviolet light: wavelength λ = 300 n) generated from a mercury lamp.
m to 450 nm) is invisible light extracted by an ultraviolet filter, and the cable of the present invention emits a predetermined color when irradiated with the invisible light. Therefore, the cable can be easily identified even in a dark place.

In the present invention, it is preferable that the coating material is a colored transparent body in which a fluorescent pigment and a colored pigment which are colored by irradiation with black light are mixed. According to this, the cable is displayed in the color of the colored pigment in a bright place, whereas in a dark place, the fluorescent pigment is colored by irradiating black light, so that the color of the fluorescent pigment and the color of the colored pigment Thus, the cable is displayed in a mixed color (color mixture), so that not only the cable can be easily identified, but also the cable can be given a kind of taste by changing the color.

[0010] The covering material of the cable usually includes at least two layers of an inner insulating material provided around the core wire and a sheath material provided around the inner insulating material. Therefore, the inner insulating material may be made to contain a fluorescent pigment that develops color by irradiation with black light, and the sheath material may be made of a transparent material.

Also, as the internal insulating material, an insulating tape having a surface coated with a fluorescent pigment which develops a color by irradiation with black light may be used.

[0012] As described above, when the inner insulating material side is made to be a luminous body by black light, it is preferable to mix a predetermined coloring pigment with the sheath material to obtain a colored transparent body. According to this, as described above, the color in a bright place is different from the color when illuminated with a black light in a dark place. The cable can have an illumination-like effect.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to an embodiment shown in the accompanying drawings.

FIG. 1 shows a first embodiment in which the present invention is applied to, for example, an electric cable for connecting video equipment. The electric cable 1 has a conductor 2 as a core wire, and the conductor 2 is covered with an internal insulating material 3 such as polyethylene, polypropylene, or fluororesin.

A wire mesh-shaped shield core wire 4 is provided around the inner insulating material 3, and the shield core wire 4 is formed of a sheath material 5 as an outer cover made of an insulating material such as polyvinyl chloride, polyethylene, silicon or urethane. Coated.

According to this embodiment, the sheath material 5 contains a fluorescent pigment which develops a color in response to the light of black light. Here, black light is light having a specific wavelength generated from a mercury lamp (near ultraviolet light: wavelength λ = 3).
(00 nm to 450 nm) is invisible light extracted by an ultraviolet filter. In this embodiment, a fluorescent pigment that emits light at an emission wavelength of 365 nm is used. This type of fluorescent pigment includes, for example, Lumilite Color, a product name manufactured by Shinloich Co., Ltd.

Therefore, according to the electric cable 1, the fluorescent pigment emits light (colors) by irradiating it with black light even in a dark place, so that its presence can be easily confirmed. In addition, by using different emission colors for each cable, a large number of cables can be individually identified even in a dark place.

The fluorescent pigment may be contained over the entire length of the electric cable 1 or may be contained partially in a stripe form. Further, the aspect in which the fluorescent pigment is applied to the surface of the sheath material 5 is also included in the present invention.

It should be noted that the sheath material 5 may be a colored transparent body containing a predetermined colored pigment, and the colored transparent body may further contain a fluorescent pigment. By identifying the electric cable 1 and irradiating it with black light in a dark place, the electric cable 1 has a different color from the color in a bright place, that is, a mixture of the color of the coloring pigment and the color of the fluorescent pigment. Will be displayed.

FIG. 2 shows an electric cable 11 according to a second embodiment of the present invention. This electric cable 11
However, the difference from the first embodiment is that a second inner insulating material 51 is further covered around the shield core wire 4, and the inner insulating material 51 is covered with a sheath material 52. .

That is, in the second embodiment, the covering material has a two-layer structure of the second inner insulating material 51 and the sheath material 52, and the second inner insulating material 51 is irradiated with black light. Contains a fluorescent pigment that develops color. Sheath material 5
2 is formed of a colored transparent body colored with a predetermined coloring pigment. Note that the surface of the second internal insulating material 51 may be coated with a fluorescent pigment.

The electric cable 12 according to the third embodiment shown in FIG. 3 also has a two-layer structure of a coating material of a second inner insulating material 51 and a sheath material 52. In this case, The second internal insulating material 51 is formed by a wound body of a tape 6 coated with a fluorescent pigment that develops a color in response to black light. The internal insulating material 5 of the second embodiment
The tape 6 may be wound on the tape 1. Also in the third embodiment, the sheath material 52 is formed of a colored transparent body colored with a predetermined coloring pigment.

According to the second and third embodiments, both the electric cables 11 and 12 are displayed in the color of the sheath material 52 made of a colored transparent body in a bright place, and irradiate black light in a dark place. As a result, the inner insulating material 51 or the tape 6 below the sheath material 52 develops a color, and is displayed in a color in which the coloring of the fluorescent pigment and the color of the sheath material 52 are mixed. Note that the second and third
In the embodiment, the sheath material 52 may be colorless and transparent.

According to the electric cable of the present invention, it is possible to easily confirm and identify by irradiating a black light even in a dark place.
For example, when laying in a dark corridor or other place where people come and go, a black light should be installed in the vicinity and the light should be constantly illuminated, so that the electric cable would appear to rise. Can be prevented.

For example, when an electric guitar or the like is played on the stage, a black light is installed beside the stage, and the electric cable of the present invention is used as a connection cable for the electric guitar. In addition to being able to move around safely, the cable itself looks luminous, so the illumination effect is added and the stage effect is enhanced.

The present invention can be applied to cables of various electric devices including audio devices and video devices such as microphones and headphones, but can also be applied to cables for optical communication. The base color of the fluorescent pigment used this time is milky white, and it emits a predetermined fluorescent color when irradiated with black light, but it is also possible to add a pigment, and for other color shades etc. Can be arbitrarily selected.

[0027]

As described above, according to the present invention,
By irradiating a black light, a cable is provided which can easily confirm and identify its presence even in a dark place without brightening the surroundings.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an electric cable according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing an electric cable according to a second embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view showing an electric cable according to a third embodiment of the present invention.

FIG. 4 is a schematic view showing an example of identification of a conventional electric cable.

[Explanation of symbols]

 1, 11, 12 Electric cable 2 Core wire (conductor) 3 Internal insulating material 4 Shield core wire 5, 52 Sheath material 51 Second internal insulating material 6 Tape

Claims (5)

[Claims] 1. A power supply or signal transmission cable in which a core wire is covered with an electrically insulating covering material, wherein the covering material is provided with a fluorescent pigment material that develops a color when irradiated with black light. Cable. 2. The cable according to claim 1, wherein the covering material is made of a colored transparent body in which a fluorescent pigment which emits color by irradiation with black light and a colored pigment are mixed. 3. The coating material includes an inner insulating material provided around the core wire, and a sheath material provided around the inner insulating material, and the inner insulating material is colored by irradiation of black light. The fluorescent material of claim 1, wherein the sheath material is made of a transparent material.
Cable described in. 4. The covering material includes an inner insulating material provided around the core wire, and a sheath material provided around the inner insulating material, and the inner insulating material irradiates the surface with black light. The cable according to claim 1, wherein the cable is made of an insulating tape coated with a fluorescent pigment that develops a color, and the sheath material is made of a transparent material. 5. The cable according to claim 3, wherein the sheath material is made of a colored transparent body mixed with a predetermined coloring pigment.