JP3256096B2 - Light-emitting road surface display device linked to a traffic light - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting road surface display device. More specifically, a light emitting road surface display device that shines in conjunction with various traffic lights, for example, provided in front of a pedestrian crossing, near a roadside zone, near a curbstone, etc., and when the signal at the intersection is red, The present invention relates to a light-emitting road surface display device which is illuminated red in conjunction with this signal, and illuminated in blue when the signal is blue.

[0002]

2. Description of the Related Art A light emitting road surface display device disclosed in Japanese Patent Application Laid-Open No. HEI 6-111183 is known as a light emitting road surface display device which emits light in conjunction with the various traffic lights. In this light emitting road surface display device, a tube-shaped light emitting body composed of a flexible tube and a core housed in the flexible tube and having a higher refractive index than the flexible tube is placed in a groove at a display location. The light source of the traffic light emitted from this light source is put into the tube-shaped light-emitting body from the end face, and the tube-shaped light-emitting body is mounted. The light is guided to the display location through the light-emitting body, and is irradiated onto the road from the upper side surface of the tubular light-emitting body.

[0003]

However, since the light emitting road surface display device described in the above publication emits light brightly on the road, the feet light up in the same color as the traffic light and are easy to see without looking up at the signal above. However, when a vehicle or the like passes over the tube, the tube-shaped light-emitting body is crushed. Therefore, the tube-shaped light-emitting body is usually put in a groove shape and covered with a cover. Therefore,
Only the portion between the extension line connecting the tube-shaped light emitter at the bottom of the groove and both side edges of the groove entrance is irradiated, and the other portions are not irradiated. Moreover, when the entrance of the groove is widened, the lid is damaged by a vehicle or the like passing over the lid, so that the width is reduced. Therefore, since the vehicle is visible only when approaching the driver of the vehicle, there is a problem that the light emitting road surface display is difficult to see.
In addition, when a vehicle or the like passes, there is also a problem that the lid is detached or the light emitting road surface display tends to be difficult to see due to sand or the like entering the groove.

An object of the present invention is to provide a traffic light capable of displaying a bright light-emitting road surface on which a light is emitted not only upward but also at a wide angle without being crushed, the cover being damaged or coming off even when a vehicle or the like passes. To provide a light-emitting road surface display device linked to the above.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 is a light emitting road surface display device comprising a display, a light source, and a color filter. The display body has a hard transparent elongate body provided with a through hole in the longitudinal direction and a protruding strip on the outer peripheral side face in the longitudinal direction, and a tubular shape inserted into the through hole of the transparent elongate body. A luminous body, consisting of a metal fitting made of a long body provided with a long recess in the longitudinal direction on the upper surface, the lower side than the protruding strip of the transparent long body is inserted into the recess of the metal fitting, The transparent elongated body is detachably attached to the metal fixture by holding down the protruding strip of the transparent elongated body by a locking piece detachably attached to the metal fixture, and the tube-shaped light emitting device is provided. The body is housed in a flexible tube and the flexible tube Consists of a high refractive index core than the flexible tube, the pavement markings portion of the display is a road,
The upper surface of the transparent elongate body is buried to be exposed on the road surface, and the tubular light-emitting body in the display body is extended from the display body and its end face is attached to the light source provided on the side edge of the road. The colored filter is provided between the end face of the tubular light emitter and the light source in conjunction with the traffic light, and the side surface of the tubular light emitter extending from the display body is covered.

According to a second aspect of the present invention, a reflecting plate is provided between the transparent elongated body and the metal fixture.
It is a light emitting road surface display device interlocked with the traffic light of the description. The hard transparent long body used in the present invention refers to a long body made of a hard transparent material such as a colorless or colored transparent glass or a synthetic resin such as a polycarbonate resin and a polyacryl resin.

[0007] The tube-shaped luminous body used in the present invention comprises:
It comprises a flexible tube and a core housed within the flexible tube and having a higher refractive index than the flexible tube. The flexible tube is formed by molding a transparent flexible material such as synthetic resin or rubber into a tube shape. As the flexible material used at this time, synthetic resins such as polyethylene, polypropylene, polyamide, and polystyrene-butadiene copolymer, butyl rubber, EPDM, acrylonitrile-butadiene copolymer, fluorine rubber, silicone rubber, and the like are preferable. It is. Among these, silicone polymers and fluorine polymers having a low refractive index are particularly preferred.

The core may be any material as long as it has a higher refractive index than the flexible tube and is transparent, but is usually in the form of a liquid, solid or gel. Examples of the liquid or gel core include polyols such as polyethylene oxide, polypropylene oxide, and glycerin.
Polyol esters, polyol ethers, chloroethyl phosphate, phosphate esters such as dichloropropyl phosphate, liquid paraffin, fluorine oil, silicone oil, polyisobutylene, polysiloxane-modified polyether, aqueous solution of inorganic salt, polymer in a suitable solvent A diluted polymer solution or the like is suitable. Further, examples of the solid core include polymethyl methacrylate.

When the core is in a liquid state or a gel state, both ends of the flexible tube may be closed with a transparent material such as glass or quartz so as not to leak from the inside of the flexible tube. A method of inserting a solid core into a flexible tube is to put a synthetic resin monomer into the flexible tube and polymerize in a flexible tube held in an appropriately shaped state. Good. As a preferable example of such a tube-shaped light-emitting body, there is a Raydac light (trade name) manufactured by Bridgestone Corporation.

[0010] The tube-shaped light-emitting body of the present invention is inserted into a through hole of a transparent elongated body. In this insertion method, a through-hole is formed in the center of the transparent elongated body in the longitudinal direction, or a transparent elongated body having a through-hole in the longitudinal direction is manufactured in advance, and a tubular light-emitting body is inserted into the through-hole. It may be inserted, or the synthetic resin may be formed in a long body while inserting the tubular light-emitting body. Alternatively, a component having a shape divided into a plurality of pieces in the longitudinal direction may be manufactured, and the components may be joined while inserting the tubular light-emitting body therein.

In the present invention, the transparent long body is buried in the road surface display portion of the road with the upper surface exposed on the road surface.
In particular, the transparent long body is buried on the road surface with its lower side put in a fixture made of a material having high mechanical strength such as metal so that the tube-shaped light-emitting body is not easily broken. At this time, insert the lower side of the protruding strip of the transparent elongate body into the recess of the metal fixture, and hold the protruding strip of the transparent elongate body with the locking piece detachably attached to the metal fixture. It is preferable that the transparent elongate body be detachably attached to the metal fixture because the locking piece can be removed and replaced when the tubular light-emitting body or the transparent elongate body is damaged or damaged.

At this time, in order to efficiently irradiate the light emitted from the tube-shaped light emitter upward, a reflecting plate is provided between the metal fixture and the transparent elongated body. Preferably, it is attached. In particular, it is preferable to mount the reflector in the direction of the traveling vehicle, because the reflector is easily seen by the driver of the vehicle. The metal fittings used at this time include aluminum fittings, iron fittings,
Stainless steel fittings and the like are preferred. In particular, an aluminum fixture is preferable because it hardly rusts and reflects light well.

In the present invention, the tube-shaped light-emitting body is extended from the display body, and its end face is attached to the light source provided on the side edge of the road. At this time, the end face of one end of the tubular light emitter may be attached to the light source, or the end faces of both ends may be attached to the light source. In particular, it is preferable to attach the end faces of both ends to the light source, since light enters the tubular light-emitting body from both ends, and the road surface display portion of the tubular light-emitting body shines brightly and uniformly.

In the present invention, a coloring filter is provided between the light source and the end face of the tube-shaped illuminant in conjunction with the traffic light. The indicator is buried in front of the pedestrian crossing, near the roadside zone, near the curb, etc., and when the traffic light at the intersection is red, the coloring filter is red, and when the traffic light is blue, the color filter is colored. Turn the filter blue. Then, since the front of the pedestrian crossing glows red or blue, the driver can recognize the color of the signal even when it is difficult to see the signal behind a large car. In this way, as a method of providing a coloring filter linked to a traffic light, red, blue, yellow coloring filters can be replaced in conjunction with a traffic light,
It is advisable to mount red, blue, and yellow filters in the form of a disk, and change the color of the filter by rotating the disk with a drive unit that is linked to a traffic light.

In the present invention, the side surface of the tube-shaped luminous body in the extended portion extended from the display body is coated, and the coating is preferably made of aluminum foil having a high light reflectance.

[0016]

The tubular luminous body used in the present invention comprises a flexible tube and a core housed in the flexible tube and having a higher refractive index than the flexible tube.
When light enters from the end face, light traveling from the core toward the flexible tube is totally reflected at the boundary surface between the flexible tube and the core, and the light efficiently reaches a distant place. Moreover, in the present invention, since the side surface of the tube-shaped light-emitting body of the extension part extended from the display body is covered, light leaking from the tube-shaped light-emitting body is reflected by this coating, and the tube-shaped light-emitting body is again formed. Enter inside and do not go outside. In other words, light exits only from the upper surface of the tubular illuminant in the display. Therefore, the display body shines brightly from the upper surface.

Since the display body used in the present invention is buried in the road surface display portion of the road with the upper side exposed on the road surface, it is wide from the upper side exposed on the road surface of the display body. It is illuminated at an angle and looks good even from the side. Further, in the present invention, since a coloring filter interlocking with the traffic light is provided between the end face of the tube-shaped light-emitting body and the light source, for example, the display body in front of the pedestrian crossing, near the roadside zone, near the curbstone, etc. If the traffic light at the intersection is red, the road surface display will glow red in conjunction with this traffic light, and if the traffic light is blue, it will glow blue when the traffic light at the intersection is red. Even when it is difficult to see the traffic light because it is blocked by an object, the driver of the vehicle can see the color of the traffic light.

The display used in the present invention is a hard transparent elongate body, a tube-shaped light-emitting body inserted into a through hole of the transparent elongate body, and a metal fitting having a recess on the upper surface. The lower part of the protruding strip of the transparent elongated body is inserted into the recess of the metal fitting, and the protruding strip of the transparent elongated body is held down by a locking piece detachably attached to the metal fitting. Since the transparent elongated body is detachably attached to the metal fixture, the tube-shaped light-emitting body and the transparent elongated body are protected by the metal fixture and are not easily broken. At the same time, the transparent elongated body can be attached or detached by attaching and detaching the locking piece, and if the transparent elongated body or the tubular light-emitting body is damaged or damaged, it can be easily replaced.

According to the second aspect of the present invention, since the reflecting plate is attached between the metal fixture and the transparent elongated body,
The light emitted to the lower side is reflected by this reflector, and the upper side surface of the display body, which becomes the light emitting road surface display, shines brighter.

[0020]

Next, embodiments of the present invention will be described. 1 to 3 show an embodiment of the present invention. FIG. 1 (a) is an explanatory view showing a use state of a light emitting road surface display device, (b) is an enlarged sectional view taken along line AA, and FIG. And FIG. 3 is a front view of the color filter. FIG. 4 is an explanatory view showing another embodiment of the present invention, showing a use state of the light emitting road surface display device, and FIG. 5 is an explanatory view showing another embodiment of the present invention, showing a use state of the light emitting road surface display device. is there.

First, the embodiment shown in FIGS. 1 to 3 will be described. 1 to 3, reference numeral 1 denotes a light emitting road surface display device. The light emitting road surface display device 1 includes a display body 2, a light source 85, and a coloring filter 7.

The display 2 is composed of a transparent elongated body 3, a tube-shaped light-emitting body 4, and a metal fixture 5 made of aluminum. 9 are buried on the road surface. The transparent elongate body 3 is an elongate body made of a transparent polycarbonate resin.
As shown in (b), the cross section has an elliptical upper surface that is substantially flat, and has protruding strips 32 provided on both sides in the longitudinal direction, and a through hole 31 having a circular cross section in the longitudinal direction is provided substantially at the center. .

The tube-shaped luminous body 4 has a core 42 housed in a flexible tube 41 having an outer diameter of 16 mm having two layers of a transparent fluororesin tube and a transparent vinyl chloride resin tube. It is covered with quartz glass. The display 2 is inserted into the through hole 31 of the transparent elongated body 3 as shown in FIG.
As shown in (b), the tube-shaped light-emitting body 4 is inserted.

The metal fitting 5 has a main body 52 provided with a long recess 51 in the longitudinal direction on the upper surface, and a locking piece mounting portion having flat ends on both sides of the recess 51 and further having the tip raised upward. The locking piece mounting portion 54 is provided with screw holes 55 along the longitudinal direction. Reference numeral 56 denotes a locking piece made of a long body having a rectangular cross section, and a through hole 57 is provided at substantially the center of the locking piece 56 along the longitudinal direction. 58 is a reflection plate.

In the display 2, the reflector 58 is inserted into the recess of the metal fixture 5, the transparent elongated body 3 is inserted from above, and the screw 59 is inserted through the through hole 57 of the locking piece 56. Is screwed into the screw hole 55 of the metal attachment 5, and the locking piece 56 pushes the protruding strip 32 of the transparent elongated body 3 from above to push the transparent elongated body 3.
Are detachably attached to the metal attachment 5. Reference numeral 6 denotes a control box provided on a side edge of the road 9. The control box 6 includes a light source 85 and a lens 6.
2. A coloring filter 7 is provided.

The tubular light-emitting body 4 of the display 2 is extended to the side edge of the road 9, the end of the tube-shaped light-emitting body 4 is guided into the control box 6, and the end face 43 faces the front of the lens 62. Installed. Then, between the end face 43 of the tube-shaped light-emitting body 4 and the light source 85, as shown in FIG. 4, a colored filter 7 made of a transparent disk of three colors of red, blue and yellow is provided. . Therefore, light emitted from the light source 85 is collected by the lens 62, passes through the coloring filter 7, and enters the tubular light-emitting body 4 from the end face 43. The coloring filter 7 is driven by a motor 71.

Reference numeral 8 denotes a traffic light. The traffic light 8 changes to red, blue, and yellow after a predetermined time has passed by the controller 81. When the color of the traffic light 8 changes, the traffic light control circuit 8 according to the circuit diagram shown in FIG.
1. The motor 71 is operated by the traffic light color filter relay circuit 82 and the color filter circuit 83 so that the portion of the color filter 7 having the same color as the traffic light 8 enters between the end face 43 of the tubular light emitter 4 and the light source 85. Has become. Therefore, for example, when the traffic light 8 becomes red, the light transmitted through the red portion of the coloring filter 7 is emitted from the display 2, and the light of the display 2 is interlocked with the traffic light 8 so that the display 2 shines in the same color. Has become. In addition, the side surface 45 of the tubular light-emitting body 4 extended from the display body 2 is covered with aluminum foil.

Next, a method of using the light emitting road surface display device 1 will be described. A groove is provided on the road surface in front of the pedestrian crossing 91, the display 2 is buried in the groove, and the tube-shaped light-emitting body 4 extending from the display 2 is provided on the side edge of the road 9. The colored filter 7 is guided into the box 6 so that the end face 43 of the tubular light-emitting body 4 faces the light source 85.
Attach before. Then, the display body 2 is fixed such that the upper side surface of the display body 2 is exposed from the road surface. On the other hand, a traffic light 8, a traffic light control circuit 81, a traffic light color filter relay circuit 82, a color filter circuit 83, a motor 71
Wire to.

When the display 2 is buried in this way, the tubular light-emitting body 4 is not crushed or damaged even when a vehicle or the like passes over it. When the traffic light 8 turns red, blue, or yellow, the traffic light control circuit 81, the traffic light color filter relay circuit 82, and the color filter circuit 83 operate.
The motor 71 rotates the color filter 7 so that the color filter between the end face 43 of the tubular light emitter 4 and the light source 85 is linked to the red, blue, and yellow colors, Make the blue part and the yellow part. Then, the side of the display body 2 appearing on the road surface before the pedestrian crossing 91,
It shines brightly in red, blue and yellow in conjunction with the traffic light 8.

Next, the embodiment shown in FIG. 4 will be described. In the embodiment shown in FIG. 4, the use state of the light-emitting road surface display device on a road crossing a cross is shown, and a traffic light 8a and a display provided near a stop line facing the traffic light 8a are shown. The body 2a is interlocked, and the traffic light 8b is interlocked with the display 2b provided near the stop line facing the traffic light 8b. The structure and operation of this light emitting road surface display device are the same as those of the light emitting road surface display device 1 shown in FIGS.

Next, the embodiment shown in FIG. 5 will be described. 5 is different from the embodiment shown in FIG. 4 in that the display bodies 2c and 2d are provided near the curb 95 of the road. Others are the same as the embodiment shown in FIG. As described above, when the vehicle is provided near the curb 95, the driver of the vehicle is far in front of the intersection, and the traffic light 8
This is convenient because the colors of c and 8d are known. The rest is the same as the embodiment shown in FIG.

[0032]

The tubular luminous body used in the present invention is:
As can be seen from the above description, the flexible tube and the core housed in the flexible tube have a higher refractive index than the flexible tube, so that light entering from the end face can easily pass through. A large amount of light is emitted from the side surface of the tube-shaped light emitter. Since the display used in the present invention is buried in the road surface display portion of the road with the upper surface exposed on the road surface, a large amount of light emitted from the tubular illuminant emits light on the road surface of the display. It shines brightly at a wide angle from the side that appears. Therefore, it is easy for a person passing through the road to see from a distance.

In the display, a tube-shaped light-emitting body is inserted into a through hole of a hard transparent long body having a through hole in a longitudinal direction, and the transparent long body is detachably attached to a metal fitting. Since it is attached, even if a vehicle or the like passes over the display body and an impact is applied, the tube-shaped light-emitting body is protected by the transparent elongated body and metal fittings, making it difficult to break, and at the same time, the tube-shaped light-emitting body When the transparent elongated body is damaged or damaged, it can be easily replaced.

Further, since a coloring filter is provided between the end face of the tube-shaped light-emitting body and the light source, which is linked to the traffic light, for example, the display body can be placed in front of a pedestrian crossing, near a roadside belt,
If the traffic light at the intersection is red, the light near the pedestrian crossing will glow red when the traffic light at the intersection is red, and it will glow blue when the traffic light is blue, so look up at the traffic light. Even if it is not necessary, or even when it is difficult to see the traffic light ahead because it is blocked by a large car, the driver of the vehicle can understand the color of the traffic light, which is convenient.

According to the second aspect of the present invention, since the reflecting plate is attached between the transparent elongated body and the metal fixture, the light emitted to the lower side is reflected by the reflecting plate, and is reflected from the upper side. Get out,
The light-emitting road surface display of the display body is further brightened, so that it is easy to visually recognize.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is an explanatory diagram showing a use state of a light emitting road surface display device, and FIG. 1B is an enlarged sectional view taken along line AA of FIG.

FIG. 2 is a circuit diagram showing a circuit in which a traffic light and a coloring filter are linked.

FIG. 3 is a front view of a coloring filter.

FIG. 4 is an explanatory view showing another embodiment of the present invention and showing a use state of the light emitting road surface display device.

FIG. 5 is an explanatory view showing another embodiment of the present invention and showing a use state of the light emitting road surface display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 light emitting road surface display device 2, 2 a, 2 b, 2 c, 2 d display body 3 transparent long body 31 through hole 4 tubular light emitter 41 flexible tube 42 core 43 end face 5 metal fixture 51 recess 56 locking piece 58 reflection Board 6 Control box 7 Coloring filter 8, 8a, 8b, 8c, 8d Traffic light 85 Light source 9 Road 91 Crosswalk

Claims (2)

(57) [Claims] 1. A light-emitting road surface display device comprising a display body, a light source, and a color filter, wherein the display body is provided with a through-hole in a longitudinal direction and a hard transparent member having a projecting strip in a longitudinal direction on an outer peripheral side surface. An elongated body, a tube-shaped light-emitting body inserted into a through-hole of the transparent elongated body, and a metal fixture consisting of an elongated body provided with a long recess in a longitudinal direction on an upper surface, the metal The lower part of the protruding strip of the transparent elongated body is inserted into the recess of the metal fitting, and the protruding strip of the transparent elongated body is held down by the locking piece detachably attached to the metal fitting, and the metal mounting is performed. A transparent elongated body is detachably attached to the tool, and the tube-shaped light-emitting body has a refractive index higher than that of a flexible tube and a flexible tube housed in the flexible tube. It consists of a high core, and the display body is a transparent long The upper surface of the body is buried on the road surface, and the tube-shaped light-emitting body in the display is extended from the display, and the end face is attached to the light source provided on the side edge of the road, and the tube-shaped light-emitting body is mounted. A light emitting road surface display device interlocked with a traffic light, wherein the colored filter interlocking with the traffic light is provided between an end face of the light emitter and the light source, and a side surface of the tubular light emitter of an extended portion extended from the display body is covered. 2. The light emitting road surface display device linked to a traffic light according to claim 1, wherein a reflector is provided between the transparent elongated body and the metal fixture.