JPH0935517A - High altitude lighting for railways - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the light emitting part of the lighting device is installed at a desired place such as in a high place or near a dangerous high voltage line for railways according to the purpose of use, the lamp of the light source part Etc. can be replaced in a safe place, and there is no need to install a hood etc. on the light emitting part, which facilitates weight saving and simplification. [Structure] A light source unit 1 provided in a safe place such as a lower portion of a structure, a light emitting unit 3 provided in an upper portion of the structure for emitting light from the light source unit 1 in a predetermined direction, and a light source unit 1 Idemitsu 3
And an optical transmission body 2 for transmitting light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in a structure for holding overhead lines near railroad tracks or a structure near railroad crossings, and directs a high place or a dangerous place from above so that a driver of the railway is not dazzled. The present invention relates to a railway high-altitude lighting device that can be illuminated.

[0002]

2. Description of the Related Art Many types of lighting are used in railways and facilities for that purpose, and the most important of them is lighting necessary for ensuring the safety of vehicle operation.

Among these illuminations, there are known those which are roughly classified as follows. Lights used for inspection and maintenance of vehicles, lights needed for inspection, maintenance, and maintenance of railroad tracks, especially near points, and lights that detect obstacles such as railroad crossings in advance. Since these lights are installed near the train tracks, it is necessary to consider them as signals and signs necessary for train operation, while ensuring sufficient illuminance. In many cases, a light source with a hood is installed on the upper part of the above, or, for example, as shown in FIG. 6, the overhead wire Ford lamp 102 or the like is installed as a light source at a high place such as the beam 101 extended to the pillar 100.

[0004]

By the way, in such a conventional lighting device, as described above, since the light source is located at a high place, it is inevitable that the replacement of the lamp and the maintenance and inspection work are performed. The work is done in a high place, and the danger is high. Further, when such a light source is installed on the beam, the light source is located immediately above or near the passage of the railway vehicle, so that the danger of passing the vehicle is great.

Further, for a lighting device for illuminating, for example, a point, a light source is often installed especially on a beam for overhead lines, and not only at a high place, but also there is a risk of contact and electric shock to a high voltage line for railways. is there. In addition, such a lighting device usually has a lamp or a ballast incorporated in the light source,
The weight of the light source itself is heavy, and as a result, a strong mounting tool is required to prevent earthquakes.

In view of the above situation, the present invention is directed to a case where the light emitting portion of the lighting device is installed at a desired place such as in a high place or near a dangerous high voltage line for railways according to the purpose of use. In addition, it is an object of the present invention to provide a high-altitude railway lighting system for railways, in which the lamps in the light source section can be replaced in a safe place, and there is no need to install a hood or the like in the light emitting section, which is lightweight and easy to simplify. To do.

[0007]

That is, the invention described in claim 1 is installed in a structure for maintaining an overhead line near a railroad track or a structure near a railroad crossing, and a high place or a dangerous place is arranged from above. A railway high-altitude illuminating device for illuminating a railway driver in a direction not dazzled, wherein a light source unit provided in a safe place such as a lower portion of the structure and an upper portion of the structure, the light source The light emitting unit emits light from the light emitting unit in a predetermined direction, and an optical transmission body that transmits light from the light source unit to the light emitting unit. Further, the invention according to claim 2 is to eliminate the light diffusion preventing means such as a hood by adjusting the emission angle by utilizing the opening angle at the light emitting portion at one end of the optical transmission body.

[0008]

According to the present invention, no matter where the light is emitted, it is sufficient that only the light emitting portion can be installed at that place, and the light source portion for supplying the light emitting portion to another portion through the light transmission body. It can be installed in a place, in other words, as long as the light emitting part can be installed in a dangerous place etc., the light source part after that can be any place that is safe and easy to operate, and will prevent a dangerous electric shock accident. In addition, it is possible to prevent it, and the failure and the inspection location are exclusively limited to the light source section, so that the maintenance / inspection work can be performed safely and easily, and for example, dangerous high place work can be eliminated.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing the basic configuration of a railway high altitude lighting apparatus according to the present invention. The railway high-altitude illuminating device includes a light source unit 1, an optical transmission body 2, and a light emitting unit 3.

The light source section 1 includes a light emitting section 3 via an optical transmission body 2.
The light source 11 using a metal halide lamp is housed in the lamp house 12 in this embodiment. However, in addition to this, for example, incandescent light is used. Various things such as a light bulb, a fluorescent tube, a halogen lamp, a light emitting diode, a semiconductor laser (LD) or a gas laser, an electroluminescent body, and a plasma fluorescent tube are possible. The light source unit 1 of this embodiment is additionally provided with a reflecting member 13 or the like that is curved to have a predetermined curvature, and the light source 11 is turned on by external power supply and the reflecting member 13 efficiently collects the emitted light. The light is emitted and sent to the incident end of the optical transmission body 2. Note that this light source unit is, in addition to that of this embodiment that operates by receiving power from the outside, for example, a solar cell that receives natural light from the sun or the like in the daytime to generate an electromotive force, and a solar cell from this solar cell. A configuration including a battery that stores electromotive force may be used. Further, the light source unit 1 of this embodiment is configured so that when the external brightness falls below a certain amount of light, an appropriate means detects it to operate the light source unit 1. The lighting operation may be performed when necessary. The light emitting operation of the light source does not have to be particularly continuous, and may be, for example, a blinking operation in which light is emitted intermittently.

The optical transmission body 2 is composed of a viscous liquid core material 21.
A polymer clad material 22 processed into a flexible pipe and filled with a core material 21, a transparent window material 23 sealing both ends of the clad material 22, and a clad material 22 provided with the window material 23. In order to prevent light from leaking from other than one end of the clad material 22, that is, the outer peripheral surface of the clad material 22,
An opaque outer cover 24 that covers the entire outer peripheral surface, such as black, and a flexible protective tube 25 are provided on the outer periphery of the outer cover 24. By using the clad material 22 having a refractive index lower than that of the core material 21, (total) reflection of light occurs at the interface between the two and the light incident from the window material 23 at one end of the clad material 2 is By repeating (total) reflection, the clad material 2 is transmitted to the window material 23 at the other end.

Regarding the core material 21, the clad material 22 and the window material 23, for example, as the core material 21, there are polyols such as polyethylene oxide, polypropylene oxide and glycerin, polyol esters, polyol ethers and chloroethyl phosphate. , Phosphates such as trioctyl phosphate, liquid paraffin, fluorine oil, silicone oil, polyisobutylene,
A polysiloxane-modified polyether, an aqueous solution of an inorganic salt, a polymer solution obtained by diluting a polymer with an appropriate solvent, or the like is used. Here, as a material for forming the hollow tubular clad material 22, it is preferable to use a flexible material such as plastic or elastomer, which can be molded into a tube shape and has a low refractive index. Specific examples thereof include polyethylene, polypropylene, polyamide, polystyrene, ABS, polymethylmethacrylate, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyethylene-vinyl acetate copolymer, polyvinyl alcohol, polyethylene-polyvinyl alcohol copolymer. Polymer, fluororesin, silicone resin, natural rubber, polyisoprene rubber, polybutadiene rubber, styrene-butadiene copolymer, butyl rubber, halogenated butyl rubber, chloroprene rubber, acrylic rubber, EPDM, acrylonitrile-butadiene copolymer, fluororubber, Silicon rubber etc. are mentioned. Among these, silicone-based polymers and fluorine-based polymers having a low refractive index are particularly preferable, and specifically, silicone-based polymers such as polydimethylsiloxane polymer, polymethylphenylsiloxane polymer, fluorosilicone polymer, polytetrafluoroethylene (PTFE), four Fluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PFE), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-ethylene copolymer ( ETFE), polyvinylidene fluoride, polyvinyl fluoride, vinylidene fluoride-trifluorochloroethylene copolymer, vinylidene fluoride-
Examples thereof include a hexafluoropropylene copolymer, a vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene terpolymer, a tetrafluoroethylene propylene rubber, and a fluorine-based thermoplastic elastomer. These materials may be used alone or in a mixture of two or more kinds, and may be used as a single tube or multiple tubes. Furthermore, only the inner surface in contact with the core liquid can be subjected to a treatment such as a smoothing treatment by a method such as coating or double extrusion. As the transparent window material 23, crown glass, quartz, flint glass, chalcogenite glass, sapphire, quartz, polycarbonate, methacrylic resin, polystyrene resin, or the like can be used. The core material 21 is not limited to a viscous liquid material, but a solid material or gel material can be used. For example, a solid material such as plastic or thermoelastomer or a gel material obtained by filling the clad material 22 with a curable liquid material such as epoxy resin, liquid silicon, polyurethane, or liquid polybutadiene and curing the same may be used. In particular, the viscous liquid core material 21 and the clad material 2
The optical transmission body 2 using 2 can have a large diameter, and can significantly reduce the cost as compared with a bundle of multi-component glass optical fibers or quartz optical fibers having the same diameter. Or, if the diameter is the same, the incidence efficiency of light is high. The protective tube 25 is for protection from external damage and waterproofing, and a flexible resin pipe, a braided hose made of rubber, or the like is used.

Further detailed constitutions of the core material 21, the clad material 22 and the window material 23 have already been filed by the same applicant as this application, for example, Japanese Patent Application No. 4-248594 or Japanese Patent Application No. 248594. Flat 4-1401
Please refer to Japanese Patent Publication No. 28 and the like as appropriate.

The light emitting section 3 is in an appropriate direction so as not to dazzle the light from the light source section 1 which is continuously sent out through the light transmission body 2 into the eyes of a driver who is driving a train or the like. And is provided at the other end of the optical transmission body 2. The light emitting portion 3 of this embodiment has a substantially cylindrical shape and is formed of an opaque and corrosion resistant material such as stainless steel or zinc (Zn) plated with a predetermined material, and the other end of the light transmission body 2 is formed. A protective metal fitting 31 fixed to the portion and a protective glass 32 provided so as to completely cover the open end of the protective metal fitting 31 are provided. The protective glass 32
Is not particularly required, but when it is attached, it is preferable to coat it with a fluorine resin or the like for preventing stains or the like, if necessary.

Therefore, according to this embodiment, the optical transmission body 2 using the core material 21 and the clad material 22 which are particularly viscous liquids is used.
In that case, it is possible to use a large diameter, and not only can the cost be greatly reduced compared to a bundle of multi-component glass optical fibers or quartz optical fibers having the same diameter, but also if the diameter is the same. The incidence efficiency is high. Further, according to this embodiment, the light emitted from the light source 11 that has passed through the light transmission body 2, that is, the irradiation direction of the light emitted from the light emitting unit 3, is in the light transmission body 2.
Due to the inherent opening angle θ (Angular apeture) of itself, the angle is usually around 60 degrees, so there is no diffusion beyond this angle to the outside, especially for preventing illumination light diffusion. The light for illumination does not dazzle into the eyes of a driver of a train or the like even without the need for.

Next, another embodiment of the railway high altitude lighting apparatus according to the present invention will be described. FIG. 4 is a front view showing a state in which the railway high-altitude illuminating device of the second embodiment is actually installed. One of the railway high-altitude illuminating devices is mounted on a column 4 on the side of the track (not shown). The light source unit 1A is installed at a height of 1 m to 1.5 m above the ground for convenience of maintenance, and the protection tube portion 2 of the optical transmission body 2A is installed.
0A (see FIG. 5) is configured to be protected by, for example, a conduit tube or a hard vinyl chloride tube, and in particular, an arch-shaped portion away from the column 4 is protected by a metal conduit tube or the like. It is preferable.

Further, in this second embodiment, the other railway high-altitude lighting device is provided in the beam 5 for holding the overhead wire instead of the conventional hood lamp, and the basic structure is the same as the above-mentioned pillar 4. Like the one to be installed, it is composed of a light source section 1B, an optical transmission body 2B, and a light emitting section 3B, but the contribution to safety when performing maintenance such as maintenance and inspection is conventional. In comparison, in terms of suppressing the occurrence of an electric shock accident due to contact with the overhead wire, a much larger effect can be obtained than that for installing the support column 4. It should be noted that these embodiments are one aspect of the present invention and can be installed in various places other than this.

[0018]

As described above, according to the present invention, no matter where the light is radiated, it is sufficient that only the light emitting portion can be installed at that location, and the light source portion that supplies the light to the light emitting portion. Can be installed in another place via the optical transmission body, that is, even if it is a dangerous place or a high place, if the light emitting part that does not require maintenance and management can be installed in that place・ Since the light source section that requires management etc. may be in any place that is safe and easy to operate,
In particular, for example, even when installing a lighting device in a dangerous overhead wire beam, it is possible to freely perform various operations such as maintenance and inspection of the light source section regardless of whether or not the overhead wire is energized and whether or not the train passes. In other words, there is no need for dangerous work at height,
As a result, it is possible to surely prevent an electric shock accident, a fall accident on a train, and the like associated with this lighting device, and to provide a lighting device with significantly improved safety.

Further, according to the present invention, the unique physical opening angle of the optical transmission member is uniquely determined, and the diffusion operation of the light emitted from the light emitting portion at the end of the optical transmission member is uniquely determined by this angle. Since there is a restriction, the need for special means for suppressing the emitted light at an angle that does not affect the driving of the vehicle driver, for example, a conventional hood, is eliminated, and the weight and simplification of the light emitting portion can be reduced accordingly. It is possible and effective without requiring strong installation tools for earthquake countermeasures.

[Brief description of drawings]

FIG. 1 is a perspective view showing a basic configuration of a railway high altitude lighting device according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the optical transmission body according to this embodiment.

FIG. 3 is a side sectional view of a light emitting portion of this embodiment.

FIG. 4 is a side view showing a state in which the railway high-altitude illuminating device of the present invention is actually attached to a column or the like.

FIG. 5 is a side view showing a railway high-altitude illuminating device in which columns are installed.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 Light source part 2 Optical transmission body 3 Light emitting part 4 Support

Claims (2)

[Claims] 1. A railroad hight which is installed on a structure for maintaining an overhead line near a railroad track or a structure near a railroad crossing, and which illuminates a high place or a dangerous place from above in a direction not dazzling a driver of the railroad. A local lighting device, a light source unit provided in a safe place such as the lower portion of the structure, a light emitting unit provided in the upper portion of the structure, which emits light from the light source unit in a predetermined direction, An illumination device for railway high places, comprising: an optical transmission body that transmits light from the light source unit to the light output unit. 2. The railway according to claim 1, wherein the light emitting portion at one end of the light transmission body has an emission angle adjusted by utilizing an opening angle to eliminate a light diffusion preventing means such as a hood. High altitude lighting