JP2590174Y2 - Electric wire or cable with fluorescent reflectivity - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire or cable having a fluorescent reflectivity, which makes it possible to easily confirm its erection position with weak light even at night or in a dark place.

[0002]

2. Description of the Related Art Conventionally, when checking the installation position of electric wires or cables in dark places such as night work and attics, it often depends on weak light of an external light or a flashlight, and it is often troublesome to check the position.

[0003] In addition, in the case of night work under weak light such as an external light, an accident such as falling down or injury due to a worker catching a wire with a foot without notice of the construction of an electric wire or the like is delayed. Absent.

[0004]

[Problems to be Solved by the Invention] This invention is to obtain electric wires or cables whose presence can be clearly identified even in weak light such as an outdoor light or a flashlight at night, and to obtain the electric wires or cables at night and in a dark place. It is intended to reduce search time and prevent a fall accident or the like.

[0005]

That is, in the present invention, a three-layer sheath or a two-layer sheath in which a tape-like fluorescent sheet or film is interposed between layers is provided on a coated cord covering a core wire of an electric wire or a cable. It is formed to have. Specifically, the outermost layer (first layer) sheath is a “sheath having transparency” mainly composed of thermoplastic resin or thermoplastic rubber, and the second layer sheath or “tape-shaped sheet or film” is a fluorescent substance. "Fluorescent sheath" containing thermoplastic resin or rubber as a main component and a fluorescent reflective material
Or, as a “tape-shaped fluorescent sheet or film”, the third layer sheath is a “protective sheath” that protects the coated cord and protects the fluorescent reflectivity of the second layer sheath, and the third layer is protected on the coated cord. The sheath, the second layer of fluorescent sheath on the third layer of protective sheath, the first layer of transparent sheath on the second layer of sheath, and three layers of sheath on the coated cord. Forming or alternatively, covering the above-mentioned third layer of protective sheath on the covering cord, and disposing the tape-like sheet or film on the third layer of protective sheath in the longitudinal direction of the protective sheath, or It is wound spirally, and a first layer of transparent sheath is coated thereon, and a two-layer sheath having a fluorescent sheet or film between layers is formed on the coated cord, so that even under weak light such as an external lamp. Wires or cables that emit fluorescent light with high reflected brightness By obtaining a table, it succeeded in confirmation of erection located made easy is obtained by solving the above problems.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Figure 1,
2 and 3 are perspective views of one embodiment of the present invention. Here, reference numeral 1 denotes an electric wire or cable having the fluorescence reflecting ability of the present invention, 2 denotes an outermost layer (first layer) sheath, 3 denotes a second layer sheath, 4 denotes a tape-shaped fluorescent sheet or film, 5
Is a protective sheath, 6 is a covering cord, and 7 is a core wire (conductor).

FIG. 1 is a perspective view showing an embodiment of an electric wire or cable according to the present invention in which a covering cord 6 covering a core wire 7 is covered with a three-layer sheath. ) Is a transparent sheath 2, the second layer is a fluorescent sheath 3 made of a compound containing a fluorescent substance and a fluorescent reflective substance, and the third layer protects the coated cord 6 coated with the core wire 7 as a conductor, and A protective sheath 5 for protecting the fluorescent reflectivity of the fluorescent sheath 3 of the layer is provided. The protective sheath 5 of the third layer is provided on the covering cord 6, and the fluorescent property of the second layer is provided on the protective sheath 5 of the third layer. Is obtained by sequentially casing a first layer of transparent sheath 2 on a second layer of sheath 3. In this case, the outermost layer (first layer) sheath 2 is a transparent sheath 2 mainly composed of a thermoplastic resin or a thermoplastic rubber.
And The reason for the transparency is that the fluorescence of the second layer sheath 3 is not hindered. In addition, the outermost layer (first layer) sheath 2 also functions to protect the second layer sheath 3 from trauma and dirt, and to maintain the fluorescence of the second layer sheath 3 for a long time. Therefore, the thermoplastic resin or thermoplastic rubber used is P
E, PP, PET, PVC, chlorinated polyethylene, SI
A thermoplastic resin or thermoplastic rubber having high transparency and high strength, such as S, SIBS, elastic PVC, and urethane rubber, is used.

Next, the second layer sheath 3 is formed of a compound mainly composed of a thermoplastic resin or rubber. A fluorescent material and a fluorescent reflective material are compounded so as to have a fluorescent property and a fluorescent reflectivity. The thermoplastic resin or rubber selected in this case is a thermoplastic resin such as PE, PVC, PP, PET, etc., which has clear coloring even when a fluorescent substance of any color is used, chlorinated PE resin, SIS, SIBS. , Urethane rubber, elastic P
Thermoplastic rubbers such as VC, and NR, IR, BR, E
1 from rubber such as P rubber, NBR, CR, Hypalon rubber
Alternatively, two or more are selected. As the fluorescent substance, an organic fluorescent pigment or dye having a fluorescent wavelength in the visible range of 4000 to 8000 ° is selected. The amount of the fluorescent substance is preferably 2 to 50 parts per 100 parts by weight of the polymer. It is appropriate for obtaining the nature. Further, pearl foil, glass beads, or the like is used as the fluorescent reflection material. It is also possible to further increase the luminance by using these together. On the other hand, the addition amount of such pearl foil or glass beads is preferably in the range of 2 to 0.1 with respect to the organic fluorescent pigment 1. The protective sheath 5 is mainly composed of a thermoplastic resin or rubber used for the second layer sheath 3, but is covered with a covering cord 6 formed by covering the core wire 7.
A material and a color should be selected so as to protect the second layer sheath 3 from the influence of the coating cord 6 and to protect the fluorescent reflectivity of the second layer sheath 3. . In addition, the second layer sheath 3 must be sheathed on the third layer protective sheath 5. This prevents a decrease in the fluorescent reflectivity of the second layer sheath 3 caused by the influence of the color tone or the like of the coating cord 6 itself when the second layer sheath 3 is directly sheathed on the coating cord 6, and prevents nighttime outdoor lighting and This is in order to obtain an electric wire or cable which can clearly show its existence with weak light such as a flashlight.

FIGS. 2 and 3 show an example of the electric wire or cable according to the present invention in which the covering cord 6 covering the core wire 7 is covered with a two-layered sheath that sandwiches a tape-like fluorescent sheet or film 4 between layers. FIG. 3 is a perspective view, in which a covered cord 6 covering a core wire 7 as a conductor is covered with a protective sheath 5 that protects the covered cord 6 and does not reduce the fluorescence reflectivity of the tape-shaped fluorescent sheet or film 4; On the protective sheath 5,
A tape-like fluorescent sheet or film 4 made of a compound containing a fluorescent substance and a fluorescent reflective substance containing thermoplastic resin or rubber as a main component is disposed in a belt shape in the longitudinal direction (FIG. 2) or spirally. It is obtained by winding (FIG. 3), and then casing the outermost layer (first layer) sheath 2 having a transparency mainly composed of thermoplastic resin or thermoplastic rubber. Needless to say, the desired width and color of the tape-shaped fluorescent sheet or film 4 can be selected. For example, it is of course possible to use a combination of very thin widths of different colors, such as yarn.

The outermost layer (first layer) sheath 2 having transparency is the same as that shown in FIG. Furthermore, the tape-shaped fluorescent sheet or film 4 can be obtained by extruding, calendering or casting a composition containing a fluorescent substance containing a thermoplastic resin or rubber as a main component. As for the thermoplastic resin or the rubber, when the fluorescent material of any color is used similarly to the second layer sheath 3 of FIG.
E, PP, PET, PVC, chlorinated polyethylene, SI
S, SIBS, elastic PVC, urethane rubber, natural rubber,
Isoprene rubber, butadiene rubber, EP rubber, NBR,
CR, Hypalon rubber and the like are appropriately selected and used.

On the other hand, the fluorescent substance contained in the composition of the tape-shaped fluorescent sheet or film 4 includes
The fluorescence wavelength is 4000 to 8 as in the second layer sheath 3 of FIG.
Organic fluorescent pigments or dyes in the visible range of 000 ° are selected. In addition, pearl foil, glass beads, and the like are selected as the fluorescent reflection material, similarly to the second layer sheath 3 in FIG. It is also possible to further increase the luminance by using these together. In this case, the number of blending parts is shown in FIG.
2 to 50 parts per 100 parts by weight of the polymer is suitable as in the case of the second layer sheath 3, and the amount of pearl foil or glass beads is appropriately selected within the range of 2 to 0.1 with respect to the organic fluorescent pigment 1. Is done. If the amount of the organic fluorescent pigment or dye is less than 2 parts, the fluorescence intensity is weak and unsuitable, and if it exceeds 50 parts, the strength of the film is weakened, which is not preferable. On the other hand, with respect to the amount of pearl foil or glass beads, if the amount is less than 0.1 of the organic fluorescent pigment or dye, the purpose of giving luminance to the fluorescent substance cannot be achieved, and if it exceeds 2 times, the luminance is rather reduced. Not preferred.
The protective sheath 5 used here is the second layer sheath 3 shown in FIG.
Although the main component is a thermoplastic resin or rubber used for the above, it can protect the covered cord 6 covering the core wire 7,
In addition, a material having a color and a material which does not reduce the fluorescent reflectivity of the tape-shaped fluorescent sheet or film 4 by eliminating the influence of the coating cord 6 on the tape-shaped fluorescent sheet or film 4 must be selected.

In addition, the fluorescent sheet or film 4 in the form of a tape must be disposed or wound on the protective sheath 5 as described above. This is because the fluorescent reflection of the tape-shaped fluorescent sheet or film 4 caused by the effect of the color tone of the coated cord 6 itself when the tape-shaped fluorescent sheet or film 4 is directly disposed or wound on the coated cord 6. This is to prevent a decrease in performance and to obtain an electric wire or cable that can fluoresce itself with weak light such as an outdoor light or a flashlight at night and can clearly show its existence.

[0013]

[Effects of the Invention] As described above, the present invention is an electric wire or cable that can fluoresce even by weak light such as an outdoor light or a flashlight at night and can clearly show its existence. It is possible to reduce the time required for searching for cables, and to prevent electric wires and cables from being hooked at night construction sites. In particular, a tape-like fluorescent sheet or film mainly composed of a thermoplastic resin or rubber containing a fluorescent substance and a fluorescent reflective substance is disposed on the protective sheath in a strip shape in the longitudinal direction of the protective sheath or spirally. Since it is wound, manufacturing is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an electric wire and a cable according to the present invention.

FIG. 2 is a perspective view showing another example of the electric wire and cable of the present invention.

FIG. 3 is a perspective view showing another example of the electric wire and cable of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Electric wire or cable 2 Outermost (first layer) sheath 3 Second layer sheath 4 Tape-like fluorescent sheet or film 5 Protective sheath 6 Coating cord 7 Core wire

Claims (2)

(57) [Scope of request for utility model registration] 1. An electric wire or cable having a three-layered sheath on a sheathed cord covered with a core wire as a conductor, wherein the sheathed cord is protected on the sheathed cord covered with the core wire and a second layer sheath is provided. The protective sheath of the third layer that protects the fluorescent reflectivity of the above, covering the sheath of the second layer mainly composed of a thermoplastic resin or rubber containing a fluorescent substance and a fluorescent reflective substance on the protective sheath An electric wire or cable having a fluorescent reflectivity, wherein the electric wire or the cable is formed by further coating thereon a transparent outermost first sheath mainly composed of a thermoplastic resin or a thermoplastic rubber. 2. An electric wire or cable having a two-layered sheath and a tape-like fluorescent sheet or film sandwiched between the sheaths on a coated cord covered with a core wire as a conductor, wherein the coated cord covers the core wire. The above-mentioned tape-like fluorescent material, which covers the protective cord and protects the coated cord and does not reduce the fluorescent reflectance of the tape-shaped fluorescent sheet or film, and contains a fluorescent substance and a fluorescent reflective substance on the protective sheath. A sheet or film is disposed in a belt shape in the longitudinal direction of the protective sheath or wound helically, and further covered with a sheath having transparency containing a thermoplastic resin or a thermoplastic rubber as a main component. An electric wire or cable having fluorescent reflectivity, which is formed.