WO2002008521A1

WO2002008521A1 - Road marking bright plate and road marking system using the bright plate

Info

Publication number: WO2002008521A1
Application number: PCT/IB2001/001312
Authority: WO
Inventors: Takashi Toyoda
Original assignee: Takashi Toyoda
Priority date: 2000-07-21
Filing date: 2001-07-23
Publication date: 2002-01-31
Also published as: WO2002009062A1

Abstract

A road marking bright plate and a road marking system capable of being used for an observer to accurately visualize a road marking pattern even when the plate is put in the dark, in a bad view, or on the road covered with snow or frozen rain water or snow water, wherein a laser beam is used as a light to be led into an optical fiber buried in a base forming the bright plate, whereby the fog obstructing the view present in a forward moving route is colored by a sharp light specific to the laser beam so as to clearly inform the observer of a light marking pattern even if the view is bad, the fallen snow or ice present in the beam advancing route is colored is colored by the laser beam even when the road is covered with snow or frozen rain water and snow water so that the observer can clearly visualize the light marking pattern, and the laser beam lights the end of a light diffusion so that the observer can clearly visualize the light marking pattern formed at the end of the light diffusion even in the dark such as in the night.

Description

^A road surface display plate and a road surface display system using the same

INDUSTRIAL APPLICABILITY The present invention is applied to a display means for road traffic, and can be easily identified even at intersections, etc., at night, in a situation where visibility is obstructed by heavy fog, heavy rain, snowstorm, or when there is snow on the road surface. Also, the present invention relates to a road surface display luminaire for displaying instruction signs, regulations or warning signs, and other signs necessary for road traffic, and a road surface display system using the same. Conventional technology

Of the various signs and signs for road traffic, the display means provided on the road surface, such as a striped line indicating a pedestrian crossing, a car, a stop line, a center separation line, or a direction mark, etc. It is made by paint on the road surface. It is also known to provide a projection-like member carrying a reflector for improving visibility at night, especially at the center separation line and direction of travel.

In addition, since this kind of sign and display is well known, no particular reference is given.

In the above-mentioned conventional technology, since various road surface display means are mainly composed of paint, they are worn or damaged by the traffic of vehicles and the like, and frequent repainting is required on roads with high traffic frequency. There is a problem that maintenance and management require a lot of labor and cost.

In addition, the road surface display means using the conventional paint painting has a problem that visibility at night is low, and it is not possible to identify even the installation position when there is submersion, snow cover, or freezing of rain and snow water. Even with a reflector, the effect will be significantly reduced if it is covered with a shield such as snow. Problems to be solved by the invention

Especially in heavy snowfall areas, if there is snow on the road surface, stop lines or check copies at places where there is no traffic light It has been empirically known that it is extremely difficult to identify a course instruction pattern. In view of this, the present inventor has disclosed in Japanese Patent Application Nos. 8-182804 and 8-182985 a road surface display luminaire which is easy to maintain and has good night visibility. A board and a road surface display system using the board have been disclosed. This illuminating plate for road surface display is buried in a base constituting the illuminating plate, has a large number of optical filters that form a pattern of a light diffusion end having one end protruding, and illuminates light introduced from a light source. The light is emitted from the light diffusion end of the optical fiber through the optical fiber to form an optical display by the pattern of the light diffusion end.

According to this road surface illuminating plate, the illumination light is emitted from the light diffusion end of the optical fiber, so nighttime visibility is improved.However, the road surface is covered with snow, frozen rainwater, etc. In such a state, sufficient visibility may not be secured. In addition, when visibility is poor due to heavy fog, heavy rain, snowstorm, etc., there is a problem that sufficient visibility cannot be secured and even the presence of a road surface display cannot be confirmed. In addition, fog, rain, snow, water, smoke, and the like surrounding the light diffusion edge are illuminated by the illumination light emitted from the light diffusion edge. However, there is a problem that it is dangerous because it can only be distinguished vaguely over an area wider than the range, and cannot accurately identify the position of the light display pattern or the like. For this reason, even in the dark, when visibility is poor, or when there is snow on the road surface, frozen snow, snow and water, etc., the observer can accurately display the road surface display pattern. There was a need for a road surface display method that can be easily viewed and maintained. Means for solving the problem

The present inventor has studied to achieve the above object, and as a result, the light introduced into the optical fiber buried in the base constituting the light source is not illumination light but very directional compared to illumination light. By using an excellent laser beam, a laser beam is emitted from the light diffusion end, and this laser beam has a sharp progression unique to a laser beam. It can be seen that fog, rain, snow, smoke, etc., which are present in the route and hinder visibility, cause a sharp streak of light in the space above the light display pattern under conditions where visibility is obstructed. By doing so, we have found that the light display pattern can be more clearly notified to the observer. In addition, the present inventor has proposed that when there is snow cover, rain, snow water freezing, etc. on the road surface, the laser beam used for the road surface display plate develops snow and ice existing on the sharp traveling path peculiar to the laser beam. For this reason, we have found that even if the light display pattern is covered with snow or ice, it can be clearly seen by the observer. In addition, the present inventor has proposed that the laser beam used for the road surface display g illuminates the light diffusion edge, thereby clearly displaying the light display pattern formed by the light diffusion edge even in darkness such as at night. Was found to be visible to the observer. In addition, the present inventor has found that the use of a laser eliminates a complicated operation such as replacement of a light bulb or the like due to a cut, so that maintenance and management are further facilitated. That is, in the first embodiment of the present invention, a base made of a hard elastic material fixedly installed on a roadbed, a frame member provided on the outer periphery of the base, and a frame embedded in the base and provided on one surface thereof A plurality of optical fibers forming a pattern of a light diffusion end having one end protruding and penetrating the other surface of the base; and a plurality of light filters disposed on one of a side surface and a back surface of the base. An optical fiber converging section for converging and holding the other end of the fiber, and a connector which is installed in the optical fiber converging section and couples a laser light source fiber connected to a laser oscillation device, is introduced from the laser oscillation device. A laser is emitted from the light diffusion end through the optical fiber to form an optical display area on one surface of the base by the pattern of the light diffusion end. Road surface display bright plate Ru is provided. According to a second aspect of the present invention, there is provided a base made of a hard material fixedly installed on a roadbed, and a light diffusion end pattern embedded in the base and having one end protruding from one surface thereof. A plurality of optical fibers, a plurality of optical fiber converging units installed on one of the side surface and the back surface of the base, and converging and holding the other ends of the plurality of optical fiber units; and Laser light source connected to a laser oscillator And a connector for coupling the fiber, and a laser introduced from the laser oscillation device is emitted from the light diffusion end through the optical fiber, so that one surface of the base has a pattern of the light diffusion end. There is provided a road surface display luminescent plate characterized by forming an optical display region. In the first and second aspects of the present invention, it is preferable that the laser has a wavelength in an infrared region. Further, in the first and second aspects of the present invention, the base may have a mark shape indicating a traveling direction of a road surface. Further, the base may have a rectangular plate shape forming a striped line at an intersection. Further, the base may have a rectangular plate shape forming a vehicle stop line at an intersection. Further, the base may have a strip shape constituting a center separation line of a road surface. Further, according to a third aspect of the present invention, there is provided a road surface display system comprising at least one of the above road surface display luminaires. Embodiment of the Invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic plan view illustrating an example of a road surface display luminaire according to the first embodiment of the present invention. 1 is a rectangular base made of a hard elastic material colored white, yellow, or another color, 2 is a frame member, 3 is a light diffusion end, 4 is an optical fiber converging section, 5 is a connector, and 10 is a connector. It is a road surface display plate. FIG. 2 is a schematic plan view illustrating another example of the road surface display luminaire according to the first embodiment of the present invention. 1 is a substrate having a shape of a route indicating pattern made of a hard elastic material colored white or yellow or another color, 2 is a frame member, 3 is a light diffusing end, 4 is a converging portion of an optical fiber, 5 is a connector, 1 Numeral 0 is a road surface display plate. In FIG. 1 and FIG. 2, the road surface display luminescent plate 10 includes a base 1 formed of a predetermined pattern made of hard rubber, and a frame member 2 provided around the periphery thereof. One end of a large number of optical fibers protrudes from the surface (surface) of the optical fiber to form a light diffusion end 3. A pattern of luminescent spots is formed on the surface of the substrate 1 by the plurality of light diffusion ends 3. The other end of the optical fiber passes through the road surface display plate 10 The optical fiber converging portion 4 is formed on the surface and extends to one side thereof to form the optical fiber converging portion 4 at the one side. The optical fiber converging section 4 is provided with a connector 5 for introducing a laser transmitted from a laser oscillation device (not shown), transmitting the laser to the light diffusion end 3 and radiating the light from the light diffusion end 3. . The originating of a predetermined pattern from the pattern of the light diffusing end 3 in bright point distribution to be emitted) ¹ zone is formed. The frame member 2 retains the outer shape of the base and facilitates construction on a road surface. Note that the frame member 2 is not necessarily required, and is not necessary when the shape of the material of the base 1 is highly maintainable, or a frame member can be separately used at the time of construction. The size of l0 for road surface display can be determined according to the provisions of the Road Traffic Act. For example, in FIG. 1, the length L can be 2000 mm and the width W can be 300 mm. Further, the thickness of the base 1 and the thickness of the frame member 2 are not particularly limited, and are appropriately selected depending on the material of the roadbed, the traffic volume, and other conditions. Further, the position of the inner peripheral surface of the frame member 2 with respect to the outer peripheral surface of the base 1 is not particularly limited, and is appropriately selected depending on the timber traffic of the roadbed and other conditions. FIG. 3 is an enlarged schematic view of a portion A in FIG. 1 or FIG. Light diffusion edges 3 are arranged on the surface of the base 1 at a predetermined interval, that is, at a predetermined pitch in a staggered manner. In the present embodiment, the rooster array at the light-scattering end 3 is formed in a staggered pattern. However, the present invention is not limited to this, and it may be arranged vertically and horizontally along a straight line, or at an average density. They can be arranged randomly. FIG. 4 is an enlarged schematic view of a portion B of FIG. 1 or FIG. 2, and an optical fiber converging section 4 is provided on one side of the road surface display illuminating plate 10, and the optical fiber converging section 4 is further provided. Is provided with a connector 5 for introducing a laser transmitted from a laser oscillation device (not shown) and transmitting the laser to the light diffusion end 3. The optical fiber converging portion 4 and the connector 5 are provided so as to protrude from the side surface of the road surface display device 10. Alternatively, the optical fiber converging portion 4 and the connector 5 may be installed at a position retracted inside from the side surface. Good. FIG. 5 is a schematic side view of an example of a road surface display luminaire according to the first embodiment of the present invention, where 6 is an optical fiber and 7 is a support pin. In the figure, an optical fiber 16 which has a light diffusion end 3 formed on the surface of a road surface display device 10 and penetrates it is laid on the back surface of a road surface display plate 10 to reach an optical fiber converging section 4. You. Connector 5 is respected The laser from the laser oscillation device is transmitted to the light diffusion end 3 via the optical fiber 16. In the same figure, the optical fiber 16 is shown as reaching the optical fiber converging section 4 in a state where it is separated from the back surface of the road surface display illuminating plate 10. It can also be fixed and laid. Also, a plurality of support pins 7 are erected on the back surface of the road surface display luminaire 10, and the road surface display surface 10 is fixed at a predetermined position by being buried in the roadbed at the time of construction. The diameter of the support pin 7 is, for example, 15 mm, and is appropriately selected depending on the material of the roadbed, traffic volume, and other conditions. FIG. 6 is an enlarged schematic cross-sectional view of a portion C in FIG. 5 and shows a state where the optical fiber 16 is embedded in the base 1. One end of the optical fiber 16 penetrates from the back surface of the base 1 to the front surface side to form a light diffusion end 3 on the front surface. The other end of the optical fiber 6 extending from the back surface of the base 1 reaches the optical fiber converging section 4 as described above. The support pins 7 are directly erected on the back surface of the base 1. The optical fiber is buried in the base 1 vertically through the surface of the base 1, but for example, by burying the optical fiber at a slight angle in the direction facing the vehicle on the road surface to be installed, the laser The direction of light emission can be adjusted. The light-diffusing end 3 has a force to process the tip of the optical fiber 16 into a convex lens shape, and a transparent or translucent member such as a glass drop is attached to the tip to form a convex lens shape, thereby providing directivity of a laser beam. Can be controlled. Alternatively, the cut surface of the optical fiber 16 may be exposed as it is. In addition, it is also possible to use a large-diameter light guide only for the portion embedded in the base. FIG. 7 is an enlarged schematic cross-sectional view of a portion D in FIG. The optical fiber converging section 4 is fixed to the frame member 2, and a connector 5 is fixed to an end thereof. The connector 5 may be embedded in the base 1 when the frame member 2 is not used, or may be left free without being fixed. FIG. 8 is a main part rear view for explaining another structural example of the base in the example of the road surface display luminaire according to the first embodiment of the present invention. In the structural example shown in FIG. 5, the support pins 7 installed on the back surface of the base 1 are directly erected on the base 1, but in FIG. 8, the support pins 7 are bridged to the frame member 2 via the reinforcing plate 8. It is planted. The force plate 8 is, for example, 18 mm in width and 2 mm in thickness, and the diameter of the support pin 7 is, for example, 1 O mm.It is suitable according to the material of the roadbed, traffic volume and other conditions. It is selected to an appropriate value. The road surface display device according to the first embodiment of the present invention is configured as described above. Next, a road surface display luminaire according to a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 9 is a schematic cross-sectional view showing an example of a road surface display device according to the second embodiment of the present invention. Is a base made of a hard resin colored white or yellow, etc., 3 is a light diffusion end, 4 is a converging portion of an optical fiber, 5 is a connector, and 10 'is for road surface display. In the figure, a road surface display luminescent plate 10 ′ is made of a hard resin, and one end of a large number of optical fibers is projected from one surface (surface) of a base 1 ′ to form a light diffusion end 3. A required pattern of bright spots is formed on the surface of the substrate 1 ′ by the light diffusion ends 3. The other end of the optical fiber 1 is buried in the road surface display surface 10 and extends to one side thereof, and the optical fiber one converging portion 4 is formed on the one side. The optical fiber converging section 4 is provided with a connector 5 for introducing a laser transmitted from a laser oscillation device (not shown), transmitting the laser to the light diffusion end 3 and radiating the same from the light diffusion end 3. A required light emitting region is formed by the bright spot distribution radiated from the pattern of the light diffusion end 3. The road surface display luminescent plate 10 'of this embodiment is integrally formed by pouring a hard resin into the mold while holding a predetermined number of optical fibers 16 at predetermined positions. For this reason, there is an advantage that manufacturing is easier than in the first embodiment. In the second embodiment of the present invention, the material of the base 1 ′ is not limited to a hard resin, but may be concrete. Further, the same support pins as in the first embodiment can be planted on the back surface. The road surface display device according to the second embodiment of the present invention is configured as described above. FIG. 10 is an example of a road surface display system according to the third embodiment of the present invention. FIG. 3 is a schematic plan view illustrating a configuration example. 1 1 is a surface made of asphalt (concrete and other road surface materials are acceptable), 1 2 is a sidewalk

, 13 and 13 are side frames. In this pedestrian crossing, a road surface illuminating plate 10 or 10 'is arranged on the roadbed in accordance with the provisions of the Road Traffic Law, and side frames 13 and 13 are arranged on the two short sides. At the same time, after connecting a laser light source fiber 6 ′ (not shown) to the connector 5, the road surface display line 10 or Fill the road surface material such as asphalt or concrete between 10 'and make the whole almost flat. Note that the road surface display plate 10 or 10 ′ may be slightly protruded. The laser light source fiber 6, may be laid along the side frames 13 and 13 'or buried therein. If the width of the pedestrian crossing is wide, a road surface display luminaire with a length corresponding to the width may be prepared, or a standard size road surface luminaire is added in the width direction and installed. May be. For the road surface display shine plate to be added in the width direction, a fiber connector for addition is provided at both ends of the road display shine plate, or the laser light source fiber is also laid on the side frames 13 and 13. Construction becomes easier. Furthermore, when the side frames 13 and 13 'are not used, a laser light source fiber 6' is laid through an appropriate portion under the road surface. FIG. 11 is an example of a road surface display system according to the third embodiment of the present invention, and illustrates a crosswalk constructed using the road surface display luminaire according to the first and / or second embodiments of the present invention. FIG. 4 is an enlarged partial view for explaining a configuration example in further detail. 14 is a signal pole, 15 is a laser oscillator, and D is a signal. In the figure, the pedestrian crossing has a pole 14 for supporting the traffic light D and a stripe line (so-called zebra zone) constructed using the road surface display luminaire 10 or 10 'according to the present invention. 14 is provided with a laser oscillation device 15. The laser light source fiber 6 ′ extending to the road surface display plate 10 or 10 ′ is connected to the laser oscillator 15 inside the pole 14 or along the pole. The laser oscillation device 15 oscillates a predetermined laser. The oscillated laser is transmitted to the road surface display plate 10 or 10 ′ by a bundle of laser light source fibers 6 ′ corresponding to at least the number of the road surface display plate 10 or 10 ′. The laser oscillation device 15 is not limited to the one mounted on the pole 14 and may be mounted on a dedicated pole, may be installed on the ground, or may be embedded in the ground. . FIG. 12 is a schematic diagram illustrating a laser oscillation device that supplies a laser to the road surface display plate according to the first and second embodiments of the present invention. 14 is a pole, 15 is a laser oscillation device, and the laser oscillation device 15 is mounted on, for example, a pole 14 that supports a traffic light. As the laser oscillation device 15, there is a possibility that the emitted laser beam may hit the human body In some cases, or as needed, a laser that does not affect the human body or that oscillates a laser with very little effect can be used. Regarding safety, it complies with the JISC6802 radiation safety standards for laser products. For example, those having a longer wavelength than the radiation region such as X-rays can be used. For example, lasers in the ultraviolet, visible, infrared, and microwave regions can be used, and from the viewpoint of high safety, economy, and low technical effort, lasers in the infrared region are preferably used. Can be. For example, a laser having a wavelength of 500 nm to 100 nm can be mentioned, more preferably a laser having a wavelength of 600 nm to 800 nm, and most preferably. Examples of the laser include a laser having a wavelength of 630 nm to 670 nm. In this specification, the infrared region includes the near infrared region and the far infrared region. Further, a laser in a visible light region having a desired color can be used depending on the installation location and application of the road surface display luminescent plate according to the present embodiment. Regarding the output of the laser, if the laser may hit the human body, or if necessary, a low-power laser that does not or rarely affect the human body can be used. This is because the function as a road surface display pattern can be sufficiently exhibited even with a low output. However, depending on the installation location and application of the road surface display luminaire according to the present embodiment, those having a large output can be used. The types of lasers are particularly limited to solid-state lasers such as ruby lasers, glass lasers, YAG lasers, and semiconductor lasers; liquid lasers; gas lasers such as excimer lasers, anoregon lasers, CO ₂ lasers, and He—Ne lasers. Can be used without. In particular, from the viewpoints of economy and safety, solid-state lasers can be preferably used, and for example, YAG lasers and semiconductor lasers can be mentioned as preferable examples. The power for driving the laser oscillation device 15 is supplied from a power line for a traffic light, but is not limited to this. A solar battery, a wind power generator, and other power sources are installed on the pole 14 and a storage battery is provided. It is also possible to drive the laser oscillation device 15 in parallel. The above example describes the configuration of the stripes that make up the pedestrian crossing at intersections, etc. There are 0, center separation line, and mark indicating the course direction, etc., and these can be constructed similarly. In other words, the marks indicating the vehicle stop line, the center separation line, and the direction of the course use a road surface display luminaire with a shape that conforms to the provisions of the Road Traffic Act, and are almost the same as the construction of the striped line above It is constructed in. FIG. 13 is an example of a road surface display system according to the third embodiment of the present invention, and is constructed using the road surface display line according to the first and Z or second embodiments of the present invention, and at the intersection center part. FIG. 3 is a schematic plan view illustrating an example of the configuration of a right turn instruction pattern installed in the vehicle. This right-turn instruction pattern is based on a road surface display plate 10 or 10 ′ arranged at the intersection at the intersection according to the regulations, and each connector 5 installed on the side of the road surface display plate 10 or 10 ′. After connecting a laser light source fiber 6 ′ extending from a laser oscillation device (not shown), a road surface material such as asphalt or concrete is filled between each road surface display plate 10 or 10 ′ to substantially Work flat. FIG. 14 is an example of a road surface display system according to the third embodiment of the present invention. The road surface display system includes a stripe line, a vehicle stop line, a center separation line, a course display pattern, and a right turn instruction pattern of a pedestrian crossing forming an intersection. FIG. 2 is a schematic plan view of a road surface display system using the road surface display luminaire according to the first and Z or second aspects of the present invention. A is a stripe line (zebra zone), B is a vehicle stop line, C is a center separation line, D is a traffic light, E is a pedestrian traffic light, F is a laser light source, fiber, G and H are course display patterns, I is This is a right turn instruction pattern. In the same figure, the lasing line A, the vehicle stop line B, the center separation line C, the course display patterns G and H, and the road surface display The laser is supplied from the box 15 via the optical fiber 1F (6 'in the above embodiment). The description of the construction method is the same as that of the example of the road surface display system described above. Although the road surface display system according to the third aspect of the present invention is configured as described above, the present invention is not limited to the above example, and the road surface display luminaire according to the first aspect and the Z or the second aspect It is only necessary to use one or more types, one or more types of road surface display plates. Next, the operation of the road surface display bright plate according to the present invention and the operation of the road surface display system using the same will be described in detail. The laser oscillation device 15 oscillates a laser by appropriately supplying electricity from a power supply. The laser oscillated by the laser oscillating device 15 transmits the laser light source fiber 6 ′, and reaches the optical fiber converging section 4 via the connector 5. Next, the laser is transmitted from the optical fiber converging section 4 to the light diffusion end 3 via the optical fiber 16 and is emitted from the light diffusion end 3. The laser beam emitted from the diffusion end 3 first develops a color at the light diffusion end 3 and travels straight through the atmosphere. If there are foreign objects such as ice, fog, rain, snow, smoke, etc. in the direction of the laser beam, the laser beam goes straight by coloring them. In other words, depending on the snow on the road surface, the freezing of rain and snow water, etc., or the presence of foreign matter floating in the atmosphere, intermittent or continuous visible light lines within the range of the sharp traveling path peculiar to the laser beam. Occurs. The number of light streaks varies according to the number of laser beams. Even when the laser beam is in a region other than visible light, the snow and ice in the direction in which the laser beam travels and the floating foreign matter are colored, causing intermittent or continuous streaks of light. Let it. For example, if the laser beam is infrared light, it will produce red light streaks. As a result, a sharp streak of light is generated in the space on the light display pattern in the range of the travel path of the laser beam in accordance with the presence of foreign matter floating in the atmosphere, even under conditions where visibility is obstructed. Accordingly, the light display pattern can be made more visible to the observer. In addition, even when snow, rain, snow and water freeze on the road surface, the snow display and ice on the display pattern can generate a sharp streak of light in the range of the laser beam's travel path. Can be clearly seen by an observer. Also, since the laser beam used for the road surface display device illuminates the light diffusion edge, the observer can clearly see the light display pattern formed by the light diffusion edge even in darkness such as at night. it can. As described above, the φ: road surface display and road surface display system of the present invention has been described. However, the present invention is not limited to the above examples, and various improvements and modifications may be made without departing from the gist of the present invention. Of course it is. The invention's effect

As described above, according to the present invention, even in a situation where visibility is obstructed, The light display pattern can be more clearly recognized by the observer. Also, even when there is snow on the road surface, freezing of rain and snow, etc., the light display pattern can be clearly seen by the observer. In addition, even in darkness such as at night, the light display pattern can be clearly recognized by an observer. In addition, according to the present invention, since a laser is used, complicated work such as replacement of a light bulb or the like by a broken wire is eliminated, and therefore, a road surface display luminaire and a road surface display system that can easily manage yarn taint can be provided. it can.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic plan view illustrating an example of a road surface display luminaire according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view showing another example of the road surface display luminaire according to the first embodiment of the present invention.

FIG. 3 is an enlarged schematic view of a portion A in FIG. 1 or FIG. 2;

FIG. 4 is an enlarged schematic diagram of a portion B in FIG. 1 or FIG. 2;

FIG. 5 is a schematic side view showing an example of a road surface display luminaire according to the first embodiment of the present invention.

FIG. 6 is an enlarged schematic sectional view of a portion C in FIG. 5;

FIG. 7 is an enlarged schematic cross-sectional view of a portion D in FIG. 5;

FIG. 8 is a main part rear view showing an example of a base constituting the road surface display device according to the first embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view illustrating an example of a road surface display luminaire according to a second embodiment of the present invention.

FIG. 10 is a schematic plan view illustrating a configuration example of a crosswalk as an example of a road surface display system according to a third embodiment of the present invention.

FIG. 11 is an enlarged partial view for explaining in further detail a configuration example of a crosswalk as an example of a road surface display system according to a third embodiment of the present invention.

[FIG. 12] A laser oscillation device for supplying a laser to the road surface display plate according to the present invention. FIG. 4 is a schematic diagram illustrating three configurations.

FIG. 13 is a schematic plan view illustrating a configuration example of a right turn instruction pattern installed at the center of an intersection, which is an example of a road surface display system according to a third embodiment of the present invention.

FIG. 14 is a schematic plan view illustrating a configuration of various display patterns forming an intersection, which is an example of a road surface display system according to a third embodiment of the present invention.

[Explanation of symbols]

1, 1 'base

2 Frame members

3 Light diffusion edge

4 Optical fiber focusing section

5 Connector

6 Optical fiber

6. Laser light source fiber

7 Support pins

8 Reinforcement plate

10, 10 'Road surface display screen

11 Road surface

12 Sidewalk

13, 13, side frame

14 pole

15 Laser oscillator

Claims

The scope of the claims

1. A base made of a hard elastic material fixedly installed on a roadbed, a frame member provided on an outer periphery of the base, and a pattern of a light diffusion end embedded in the base and having one end protruding from one surface thereof. And a plurality of optical fibers that penetrate the other surface of the base, and an optical fiber that is disposed on one of the side surface and the back surface of the base and converges and holds the other end of the plurality of optical fibers. A converging section, and a connector disposed on the optical fiber converging section for coupling a laser light source fiber connected to a laser oscillation device. The laser introduced from the laser oscillation device is passed through the optical fiber. A luminous plate for road surface display, wherein a light display region is formed on one surface of the base by emitting light from the light diffusion end, by a pattern of the light diffusion end.

2. a base made of a hard material fixedly installed on a roadbed, and a number of optical fibers embedded in the base to form a light diffusion end pattern having one end protruding on one surface thereof; An optical fiber convergence section provided on one of the side surface and the back surface of the base for converging and holding the other ends of the plurality of optical fibers; and a laser light source provided on the optical fiber convergence section and connected to a laser oscillation device A laser coupled from the laser oscillating device, and emitting the laser from the light diffusion end through the optical fiber, thereby forming a light diffusion end on one surface of the base. A luminous plate for road surface display, wherein an optical display area is formed by a pattern.

3. The illuminating plate for road surface display according to claim 1, wherein the laser has a wavelength in an infrared region.

4. The road surface display luminaire according to any one of claims 1 to 3, wherein the base has a mark shape indicating a traveling direction of the road surface.

5. The road surface bright plate according to any one of claims 1 to 3, wherein the base has a rectangular plate shape forming a striped line at an intersection.

6. The road surface display luminaire according to claim 1, wherein the base has a rectangular plate shape forming a vehicle stop line at an intersection.

7, characterized in that the base has a strip shape constituting a center separation line of a road surface. The road surface display luminaire according to any one of claims 1 to 3.

8. A road surface display system comprising at least one of the road surface display devices according to claim 4, 5, 6, or 7.