JP2000110123A - Luminescent type sight line guiding equipment and protection fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminescent type sight line induction equipment and a protection fence capable of effectively guiding the sight line even when the field of view is very poor. SOLUTION: Light L irradiated from a light source 1 is incident from a base end surface 21, this incident light L is released from a side end 22 and luminesces linearly, and a tube-shaped illuminant 2, which irradiates from the tip end surface 23 and even the tip end surface 23 is made illuminable, is installed along the road with its tip end surface 23 directed to a motor vehicle running on the opposite lane. The tip end surface 23 of the tube shaped illuminant 2 is directed to the vehicle running on the opposite lane, and also the tip end surface 23 luminesces at an extremely high brightness, so that the tip end surface 23 luminesces at the high brightness can be visually recognized by the driver of motor vehicle even when the visibility is poor and thus effective guiding of the sight line can be performed and then a dangerous region can be recognized in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-emitting gaze guidance device and a protective fence which are installed along a road having a particularly unsightly curve or the like to effectively inform a driver of a road alignment or the like.

[0002]

2. Description of the Related Art Conventionally, as this kind of light-emitting type gaze guidance device and protective fence, as described in, for example, JP-A-6-73715, a light source and a light emitted from the light source are emitted from a side surface. A line-of-sight tube-shaped light-emitting element that emits light in a linear manner, and has a line-of-sight guidance function that allows a vehicle driver to visually recognize the tube-shaped light-emitting element at night, and a spare guardrail function that prevents a vehicle or the like from jumping out of a road. A light fluence device having the same is known.

[0003]

In this light fence apparatus, as described above, light from a light source is emitted from a side surface to cause a tubular light-emitting body to emit light linearly.
At the time of snowstorm in a winter period in a snowy country, there is a problem that if snow adheres to the surface of the tubular illuminant, the visual recognition effect of the tubular illuminant is reduced.

Accordingly, the applicant of the present invention has disclosed in Japanese Patent Application Laid-Open No. Hei 8-20963.
As described in Japanese Patent Application Publication No. 8 (1994), a heating element operated by a snow sensor is attached along the tubular light emitting body, and the heating element melts snow adhered to the surface of the tubular light emitting body to maintain the visual effect. The proposed light-emitting gaze guidance device and protective fence were proposed.

[0005] However, the light-emitting gaze guidance device and the protective fence emit light from the light source only from the side surface of the tube-shaped light-emitting body, similarly to the light fence device described in the above-mentioned Japanese Patent Application Laid-Open No. Hei 6-73715. However, the amount of light emitted from the side surface of the tube-shaped illuminant is low, and depending on the thickness of the tube-shaped illuminant and the amount of light from the light source, the luminous luminance is at most about 100 cd per square meter, and very high luminance is expected. Even if the tube-shaped light-emitting body emits linear light, it is still difficult to see from a distance when snow is blowing in winter in snowy countries, or when visibility is poor such as fog in mountainous areas or rainy weather. Have a point.

Accordingly, the present invention solves the above-mentioned problems,
It is an object of the present invention to provide a light-emitting gaze guidance device and a protective fence capable of effectively performing gaze guidance even when visibility is poor.

[0007]

To achieve the above object, the inventors of the present invention have conducted intensive studies. As a result, the tube-shaped luminous body has a low amount of light emitted from the side as described above, and has a luminous luminance of at most 1 square meter. However, if the front end surface is opened to emit light from the front end surface, the amount of light emitted from the front end surface is much larger than that of the side surface, and the front end surface is 40,000 per square meter.
It emits light with extremely high luminance of about 100000 cd, so that the front end surface emitting at this high luminance is directed toward the oncoming vehicle so that the driver can visually recognize the front end surface, thereby causing poor visibility. The present inventors have learned that effective visibility can be obtained even at times, and have completed the present invention.

That is, in the light-emitting type visual line guidance device according to the present invention, light emitted from the light source is incident from the base end surface, and the incident light is emitted from the side surface to be emitted linearly and also from the distal end surface. The tube-shaped light-emitting body which is emitted and emits light at the front end face is mounted along a road with its front end face facing the oncoming vehicle.

Further, in the protective fence according to the present invention, a fence such as a beam, a panel or a guard rail is erected between a plurality of pillars erected along a road, and a tube-shaped light-emitting body is provided along the fence. The light emitted from the light source is incident from the base end face, and the incident light is emitted from the side face and is emitted linearly, and is also emitted from the tip end face. It is characterized in that it emits light and its front end face is directed toward the oncoming vehicle.

According to the luminous gaze guidance device and the protective fence according to the present invention, a beam in which a tubular luminous body is erected between a plurality of columns erected along a road or along a road,
Installed along a panel or guardrail or other fence,
Since this tube-shaped light-emitting body emits light linearly, it is possible to effectively inform the vehicle driver of road alignment and the like, and to perform effective gaze guidance.

[0011] Further, the tube-shaped light-emitting body is also made to emit light at the tip end face, and the tip end face is directed toward the oncoming vehicle, and the tip end face emits light with extremely high brightness. Also, since the tip surface emitting light with high brightness is visually recognized by the vehicle driver, effective gaze guidance can be performed, and the danger area can be recognized in advance.

Further, according to the protective fence according to the present invention, since the tubular illuminant mounted along the fence body emits light and is visually recognized, it is possible to make the vehicle driver effectively recognize the existence of the protective fence. Can be.

In the tube-shaped light-emitting body according to the present invention, the light-emitting surface of the tube-shaped light-emitting body is opened or a diffusion lens or the like is mounted on the front surface thereof. A flexible tube as a clad, which is made to emit light linearly and is also emitted from the distal end surface and emits light from the distal end surface,
It is a long one which is accommodated in the flexible tube and has a core having a higher refractive index than the flexible tube. According to this tube-shaped light-emitting body, compared to a light-emitting body such as another LED, electric wiring is not required, so that it is excellent in water resistance, maintenance is easy, and compared with an optical fiber that does not emit light from the side, Light incident from one end of the core from the light source is reflected at the boundary between the flexible tube and the core, and by repeating this reflection, while being transmitted to the other end of the core, part is emitted from the side surface. The light is uniformly emitted in a linear shape, and the remaining light reaching the tip is emitted from the tip face. Moreover, the tube-shaped light emitter is made thicker than the optical fiber so as to be incomparable (outside diameter 5 to 5).
(Approximately 20 mm), a large amount of light can be incident, the amount of light emitted from the side surface and the tip surface can be increased, and the emission luminance can be increased.

The light emission luminance of the side surface due to light emission from the side surface depends on the thickness of the tube-shaped light-emitting body and the amount of light from the light source.
d, and the light emission luminance of the tip surface due to light emission from the tip surface is generally 4 per square meter.
It is extremely high at about 0000 to 100000 cd.

Further, since the tube-shaped light-emitting body can be easily bent along a road, it is easy to mount, and its flexibility makes it hard to be damaged even by contact with a vehicle. By using a color filter, the emission color can be changed.

In order to emit the incident light from the side surface, it is preferable to form the flexible tube from a light-transmitting material, since the light is emitted from the entire side surface. Partially form a light leaking part, or form a light leaking part by covering the outer surface of a flexible tube made of a light transmitting material with a light shielding material and partially cutting out the light shielding material. Then, a part of a flexible tube made of a light-transmitting material may be covered with a light-shielding material along the longitudinal direction to emit light from the entire side surface. Instead, the light may be emitted only to the side surface facing the driver or the like.

The boundary surface between the core and the flexible tube, that is, the inner wall surface of the flexible tube may be smooth. However, if fine irregularities are formed, incident light is irregularly formed by the minute irregularities. This is preferable because the amount of light reflected and emitted from the side surface increases.

The material for forming the flexible tube is not particularly limited as long as it has flexibility and can be formed into a tube shape and has a low refractive index. Synthetic resin such as polyethylene, polypropylene, polyvinyl chloride, polyamide, polystyrene butadiene copolymer, butyl rubber, EPDM, acrylonitrile butadiene copolymer, fluorine-based, silicone rubber, etc. are used. Polymers and fluoropolymers are preferably used, and these materials may be used alone or in combination of two or more, and may be a single layer or a multilayer.

The core is not particularly limited as long as it has a higher refractive index than the above-mentioned flexible tube and has translucency. Usually, a viscous liquid, a solid or a gel is used. . This viscous liquid or gel-like core includes acrylic, polyethylene oxide,
Polyols such as polypropylene oxide and glycerin, polyol esters, polyol ethers, phosphoric esters such as chloroethyl phosphate and dichloropropyl phosphate, liquid paraffin, fluorine oil, silicone oil, polyisobutylene, polysiloxane-modified polyether, inorganic salts Aqueous solutions, polymer solutions obtained by diluting a polymer with an appropriate solvent, and the like are suitable. Solid cores include polymethyl methacrylate.

When the core is in the form of a viscous liquid or gel, both ends of the flexible tube are sealed with a transparent material such as glass or quartz so as not to leak from the flexible tube. Preferably, the solid core is accommodated in a flexible tube by putting a synthetic resin monomer into the flexible tube and polymerizing it in an appropriately shaped state. A preferred example of such a tube-shaped light emitter is Ray Duck Light (trade name, manufactured by Bridgestone Corporation).

The above-mentioned tube-shaped light-emitting body may be mounted along a road as it is. However, when the tube-shaped light-emitting body is fitted and mounted in a transparent long protective tube, the tube-shaped light-emitting body becomes outside. Since it is not exposed and is protected by the transparent long protective tube, breakage is prevented. The transparent long protective tube is
The cross-sectional shape is not particularly limited as long as an insertion hole into which the tube-shaped light-emitting body is inserted is provided in the longitudinal direction, and may be divided into a plurality of pieces in the longitudinal direction. The transparent long protective tube is generally formed from a hard material made of colorless or colored translucent glass, synthetic resin such as polycarbonate, acrylic resin, or the like. In addition, a portion of the transparent long protective tube is coated with a light-shielding material, for example, to transmit light transmitted through the transparent long protective tube from the tube-shaped luminous body in a dot line shape, or on a side facing a driver or the like. May be transmitted only to

As the light source, a halogen lamp, a metal halogen lamp, a xenon lamp, a high-intensity discharge lamp, a light emitting diode or the like is generally used, but is not particularly limited. Further, a power supply device for causing these light sources to emit light may be a solar cell or a commercial power supply. Alternatively, if the surroundings become dark, a light-dark sensor may be used to detect this, and the light source may be turned on based on the detection to cause the tubular light-emitting body to emit light.

[0023]

Next, an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a light-emitting gaze guidance device according to the present invention. FIG. 2 shows the tube-shaped light-emitting body used in FIG. 1, and (a) and (b) are horizontal and vertical cross-sections, respectively. FIG. 3 is a sectional view showing a main part of FIG. 1, and FIG. 4 is an explanatory view showing an embodiment of the protective fence of the present invention.

First, in FIGS. 1 to 3, reference numeral 1 denotes a light source, 2 denotes a light L which is mounted along a road and is emitted from the light source 1.
Is a tube-shaped light-emitting body which is made to enter the inside from the base end face 21, and the incident light is emitted from the side face 22 and emitted linearly, and is also emitted from the tip end face 23.

In the present embodiment, as shown in FIG. 2, the tube-shaped light-emitting body 2 has a core made of a translucent acrylic gel in a flexible tube 24 as a clad made of a translucent fluororesin. 25 is accommodated, and both ends thereof are appropriately closed with a light transmitting material such as quartz glass.

The tube-shaped light-emitting body 2 is mounted so as to be embraced by a plurality of columns 3 erected along the road, is mounted along the road, and has a front end surface 2.
3 is open and directed toward the oncoming vehicle. The base end of the tube-shaped light emitter 2 is inserted into the control box 4 in which the light source 1 is accommodated, and the base end face 21 of the inserted tube-shaped light emitter 2 faces the light source 1. Is emitted from the base end face 21 into the tubular light-emitting body 2. The light L incident on the core 25 from the light source 1 on the base end surface 21 of the tube-shaped light emitting body 2 is reflected on the boundary surface between the flexible tube 24 and the core 25, and by repeating this reflection, the incident light L Is emitted from the side surface 22 to emit light uniformly in a linear manner, and the light L transmitted to the tip of the core 25 is emitted from the tip surface 23 so that the tip surface 23 is directed to the oncoming vehicle. The light is emitted with high brightness toward the camera.

In the present embodiment, the color filter 5 is interposed between the light source 1 and the base end surface 21 of the tube-shaped light emitting body 2, and the light L of the light source 1 is changed to red, yellow, etc. It is changed into colored light and made to enter the tube-shaped light-emitting body 2,
The colored light is emitted from the tubular light-emitting body 2. Further, in the present embodiment, as described above, the base end face 21 of the tubular light emitter 2 is inserted into the control box 4 and directly faces the light source 1. Another light transmission means is interposed therebetween, and light L from the light source 1 passes through the light transmission means.
The light may be incident on the tubular light-emitting body 2.

It is to be noted that a diffusion lens may be attached to the front surface of the open distal end surface 23 of the tube-shaped light emitting body 2 to diffuse the light L emitted from the distal end surface 23. If the light emission color of the light emitting device is different from the light emission color of the tip end surface 23, the visual recognition effect is further improved. In the present embodiment, the number of the tube-shaped light-emitting members 2 is one for one light source 1 and the one tube-shaped light-emitting member 2 is provided.
Is about 10 to 50 m in length. That is, 1
Since the tube-shaped light-emitting bodies 2 having a length of about 0 to 50 m are sequentially attached along the road, the distal end surfaces 23 of the respective tube-shaped light-emitting bodies 2 emit light at intervals of about 10 to 50 m.
The light emission of the front end surface 23 can be visually recognized by the vehicle driver following the speed of the vehicle.

Next, one form of the protective fence according to the present invention shown in FIG. 4 will be described. In this embodiment, a fence 6 such as a beam, a panel, or a guardrail is erected between a plurality of pillars 3 erected along the road, and is shown along the fence 6 in FIGS. The tube-shaped light-emitting body 2 is attached.

That is, the tube-shaped light-emitting body 2 is attached along the fence body 6, and the light L emitted from the light source 1 is incident on the base end face 21, and the light L is incident on the side surface. The light emitted from the light source 22 is emitted linearly, and is also emitted from the front end face 23 so that the front end face 23 emits light. The front end face 23 is directed toward the oncoming vehicle.

The other points are substantially the same as those of the light emitting type gaze guidance device shown in FIGS. 1 to 3. The base end of the tubular light emitting body 2 is, as shown in FIG. At the same time, the base end face 21 of the inserted tubular light emitter 2 faces the light source 1, and the light L emitted from the light source 1 is emitted from the base end face 21 via the color filter 5 by the tubular light emission. The light L incident on the body 2 is emitted from the side surface 22, and the tubular light-emitting body 2 emits light linearly and is attached to the open distal end surface 23 or the front surface of the open distal end surface 23. The light L is emitted even after passing through the diffused lens, and the tip end surface 23 is also emitted.

The tube-shaped light emitting body 2 is composed of one light source 1
And the length of one tube-shaped light-emitting body 2 is about 10 to 50 m. The tube-shaped light-emitting bodies 2 having a length of about 10 to 50 m are sequentially attached along a road, Each tubular light-emitting body 2 at an interval of about 10 to 50 m
FIG. 1 also shows that the tip surface 23 of the
This is the same as the light-emitting line-of-sight guidance device shown in FIGS.

In order to mount the tube-shaped luminous body 2 along the fence 6, it is sufficient to mount the tube 3 on the support 3 or the fence 6 so that the support 3 or the fence 6 can be seen in the snowy winter season. When the guidance is taken into consideration, it is preferable to color in a dark color system with good visibility in consideration of the daytime snowstorm, since the light color system makes it difficult to see due to snow.

[0034]

According to the luminous gaze guidance device and the protective fence according to the present invention, the beam and the panel are provided such that the tubular luminous body is erected between a plurality of columns erected along the road or along the road. Or, it is attached along a fence such as a guardrail, and since this tube-shaped light-emitting body emits light linearly, it is possible to effectively inform a vehicle driver of road alignment and the like, and to perform effective gaze guidance. .

The tube-shaped light-emitting body is also adapted to emit light at the tip end face, and the tip end face is directed toward the oncoming vehicle, and the tip end face emits light with extremely high brightness. Also, since the tip surface emitting light with high brightness is visually recognized by the vehicle driver, effective gaze guidance can be performed, and the danger area can be recognized in advance.

Further, according to the protective fence according to the present invention, since the tubular light-emitting body attached along the fence body emits light and is visually recognized, it is possible to make the vehicle driver effectively recognize the existence of the protective fence. Can be.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing one embodiment of a light-emitting gaze guidance device of the present invention.

FIG. 2 shows the tubular illuminant used in FIG. 1,
(A) and (B) are horizontal and vertical sectional views, respectively.

FIG. 3 is a sectional view showing a main part of FIG. 1;

FIG. 4 is an explanatory view showing an embodiment of the protective fence of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light source 2 Tube-shaped light-emitting body 21 Base end surface 22 Side surface 23 Front end surface 24 Flexible tube 25 Core 3 Support 4 Control box 5 Color filter 6 Fence

Continued on the front page F term (reference) 2D064 AA13 BA13 CA02 CA03 CA09 DA06 DA08 EA03 EB01 EB05 EB35 FA03 GA01 GA03 2D101 CA06 EA02 FA22 FA33 FB12 GA26 GA30

Claims (2)

[Claims] 1. A light emitted from a light source is incident from a base end face, and the incident light is emitted from a side face and emitted linearly, and is also emitted from a tip end face so that the tip end face is also emitted. A light-emitting line-of-sight gaze guidance device characterized in that the tube-shaped light-emitting body is mounted along a road with its front end face facing the oncoming vehicle. 2. A fence, such as a beam, a panel, or a guardrail, is erected between a plurality of columns erected along a road, and a tube-shaped light emitter is attached along the fence.
In the tubular illuminant, light emitted from a light source is incident from a base end face, and the incident light is emitted from a side face and emitted linearly, and is also emitted from a tip end face and the tip end face is also emitted. A protective fence characterized in that the front end face is directed toward an oncoming vehicle.