JP2003051091A - System and device for displaying branching and merging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contribute to reduction in traffic accidents by clearly displaying distinction between a main line and a branched line and reducing driver's physiological and psychological burdens. SOLUTION: First illuminating devices 11 also serving as main illuminating devices 10 such as, for instance, high voltage sodium-vapor lamps are arranged in the vicinity of a branching place at a non-branching side road edge of the main line 1. The first illuminating devices 11 also serving as the main illuminating devices 10 such as the high voltage sodium-vapor lamps are also arranged in the vicinity of the branching place at a branching side road edge of the main line 1. Second illuminating devices 12 such as, for example, a mercury lamp whose light color is different from those of the first illuminating devices 11 are arranged at both left and right road edges of a branched road 2. At the branching side road edges of the main line 1, second illuminating devices 12 are arranged instead of first illuminating devices in a portion of sections before the branching place. As a result, the second illuminating devices 12 with different light colors are arranged from the portion of sections before the branching place to the portion of sections after branching, and a light line with the different light colors extending from the main line toward the branched road 2 is observed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch / merge display system and a branch / merge display device. Specifically, the present invention relates to a road branching / merging display used for interchanges and junctions of highways, and to a lighting method for separating and guiding vehicles.

[0002]

2. Description of the Related Art In expressway interchanges, junctions, etc., various types of lanes are used to indicate whether each lane will run on the main line or branch off from the main line toward the exit or enter the side road. Is being displayed. For example, a display showing the destination of each lane is drawn on the road surface, or a display board is placed above the road surface. However, since these are generally character information, it is difficult to intuitively determine in which direction the destination is, and it is easy to lead to an unreasonable driving such as changing lanes immediately before, which may cause a traffic accident. Further, even when merging, there are many cases that only show the merging by the sign, and the merging point is difficult to be understood only by the display. For this reason, it may be difficult to notice the merged vehicle, a sudden course change may be forced, or a rear-end collision may be avoided by a sudden braking operation, which may also cause an accident.

On the other hand, a main illuminating device for illuminating the road surface is provided so that obstacles on the road can be visually recognized, but since it only illuminates the road surface, the inductive property for each destination is poor. In addition, some lighting devices also have a function of linear display that shows the shape of the road such as a curved road, but it is possible to convey information indicating that the road will branch or merge only with the linear display. Can not. Further, in addition to these main lighting devices, a light-emitting body may be arranged along the road to install an auxiliary lighting device showing a road shape.
Even in this case, it did not give enough information about branching and merging.

Further, in recent years, a so-called car navigation system has been developed, and there is a system in which an image is displayed on a screen mounted on an automobile or a voice is used to notify road branch / confluence information. However,
This system is still expensive, not installed in all vehicles, and has to rely on road markings. There is also a problem that accurate display and guidance are not performed when the image used in the system is not updated.

As described above, the road branching / merging display is still important, but it is insufficient as a display method. In particular, when branching, you have to rely on textual information such as road signs, and the driver relies on memories you have obtained in advance, or chooses which lane to drive while reading the destination while driving. I have no choice but to take driving action. Therefore, when traveling on the main line of an expressway, the decision must be made at each branch point, which imposes an excessive physiological and psychological burden on the driver.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art.
Concerning merge information In addition to text information, a display system and display device that clearly displays the distinction between main lines and branch lines to reduce the physiological and psychological burden on the driver and contribute to the reduction of traffic accidents are provided. It is in.

[0007]

The branching / merging display system according to the first invention of the present application is characterized in that the optical characteristics of the illuminating device arranged for each road branching / merging are made different.

In the branching / merging display system according to the second aspect of the present invention, the first lighting device is arranged along the non-branching / non-merging side road edge of the road extending before and after the branching / merging point, and Along the road edge at the junction / merging side of the
The second illumination device having optical characteristics different from those of the above illumination device is arranged in at least a part of the branching / merging point on the side of the branch road or on the side of the merge flow path.

In the second aspect of the invention, it is preferable that the second illuminating device is continuously arranged in a part of the branching / merging point before or after the branching.

Further, in these inventions, the lighting device can be applied to a main lighting device that illuminates a road surface, or, in addition to the main lighting device that illuminates a road surface, a road that branches or joins. Auxiliary lighting devices arranged along can also be used.

In these branch / merge display systems, it is preferable to change the light color of the illumination device.

Further, it is preferable that an information display showing road branching / merging information is further provided, and the display color of the information display and the light color of the lighting device are substantially the same color.

Further, in these systems, it is desirable to make the optical characteristics of the illuminating device arranged at least within the visual distance according to the road design speed after the junction / junction of the road different from each other. -It is especially desirable when the confluence point is inside the tunnel.

A branching / merging display device according to the first invention of the present application is a branching / merging display device for indicating the branching / merging of a road, and is provided with a lighting device arranged along the road of the branching / merging. The illumination devices arranged along the roads have different optical characteristics.

The branching / merging display device according to the second aspect of the present invention is a branching / merging display device for indicating the branching / merging of a road, and is arranged at the non-branching side road end or the non-merging side road end. A first illuminating device and a second illuminating device having optical characteristics different from those of the first illuminating device, the second illuminating device being disposed at a branch side road end or a merging side road end. It is characterized in that the second lighting device is arranged at least on the road edge side after the branch point or before the confluence point in a certain section.

In these branch / merge display devices,
It is preferable that the light colors of the lighting device be different, and it is preferable that the lighting device also serves as a main lighting device that illuminates a road surface.

Further, it is preferable to arrange illumination devices having different optical characteristics at least within the visual distance corresponding to the road design speed after the junction / merging point of the road.

[0018]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the drawings. FIG. 1 shows a branch /
It is explanatory drawing which shows an example of a merge display system. The display system according to the present invention notifies that one or more branch roads are branched from one main line or one or more confluence channels are merged with one main line by means of lighting devices arranged along each road. belongs to. At the left and right ends of each road, lighting devices are arranged around the branching / merging point before and after the branching of the road.

The embodiment shown in FIG. 1 shows a state in which one branch line 2 branches from one main line 1 to the left side of the main line 1 and is installed at an exit of an interchange, for example. . In this embodiment, the main illumination device of the road is used for branching / merging display, and the left and right road ends of the main line 1 and the left and right road ends of the branch road 2 are
A large number of main lighting devices 10 for illuminating the road surface are installed at regular intervals. In the present invention, the main lighting device 10 is used to improve the visibility of obstacles and the like on the road surface, and is installed to ensure road surface brightness such as pole lighting and high-angle lighting. It is not limited to those that include lighting devices that are installed almost continuously on the road. That is, in the embodiment, the lighting devices 11 and 12 for indicating the branch / merge display also serve as the main lighting device 10.

Two types of illuminating devices 11 and 12 having different optical characteristics are used as the illuminating device for indicating the branch / merge display. Examples of the optical characteristic include the light color, illuminance, and light distribution characteristic of the lighting device, and an optical characteristic that can be easily visually distinguished is selected.

In the present invention, branching is performed by making the optical characteristics of the illuminating devices 11 and 10 arranged along the main line 1 and the branch path 2 different from each other.
Alongside the branch path 2, there is arranged a first illuminating device 11 composed of, for example, a high-pressure sodium lamp having an orange color, and along the branch path 2, for example, a second lamp composed of a mercury lamp having a white color. The lighting device 12 is arranged.

In the example shown in FIG. 1, the first line on the main line 1 side
The lighting device 11 is located before and after the branching point around the branching point, that is, from the front side of the branching point of the main line 1 to the branching point and thereafter, and is arranged at both left and right road ends of the main line 1,
Light of the same color is used almost continuously except for a part of the branch side road edge (the left side road edge in the traveling direction of the main line 1) on the front side of the branch point. In addition, in each drawing, the upper side of the drawing is described as the traveling direction.

The second lighting device 12 is disposed at both left and right road ends of the branch road 2 from the branch point toward the branch road 2 side. Further, in this embodiment, the second lighting device 12 is used instead of the first lighting device 11 as the lighting device at the branch road edge in a part of the front side of the branch point on the main line 1. ing. In other words, at the end of the road on the branch side, the first lighting device 11 used for the main line 1 is provided from before the branch point to the branch road 2 after the branch.
A second lighting device 12 having a different light color is arranged in series. In other words, from main line 1 to branch road 2,
A light color different from the light color on the main line 1 will be arranged.

On the other hand, in the lighting device on the right side of the main line 1, that is, on the non-branch side road end where the road does not branch and the main line 1 continues (the right side road end in the traveling direction of the main line 1), the first lighting device 11 is the branch point. They are arranged without interruption from the front side to the branch point and beyond, and the same light color is arranged in a line.
Therefore, the driver of the vehicle traveling on the main line 1 from the lower side to the upper side of the drawing intuitively confirms the existence of the branch path 2 branching from the main line 1 to the left by looking at the arrangement of the different light colors. Therefore, it is possible to proceed on the main line 1 without branching while watching the light train on the right side along the main line 1. Moreover, since the information is not light information such as a sign or road display but light information, it can be easily identified from a long distance, and the lane can be changed with a margin. In this way, by illuminating with different light colors for each of the branched roads using the first illuminating device 11 and the second illuminating device 12 having different light colors, the road can be reliably branched. Further, in the embodiment, the first lighting device 11 and the second lighting device 12 also serve as the main lighting device 10, and can be installed with substantially the same installation method and installation cost as those of the conventional lighting device.

In this case, as shown in FIG. 2, in the branch road 2, at least after the branch point, when the visual distance S or more corresponding to the design speed of the road is exceeded, the light color is restored to the original line 1 It is preferable to use an illumination device having the same light color as that of the first illumination device 11. This sight distance S is determined by the Road Structure Ordinance according to the design speed of the road. For example, when the design speed is 60 km / h, it is 75 m, when it is 80 km / h, it is 110 m, and when it is 100 km / h. Is set at 160 m. Therefore, the second lighting device 12 is used within the distance S from the point before the branch point to the point after the branch point around the branch point, and the light color in the section is different. In this way, by changing the light color of the illumination device in the section equal to or greater than the visual distance S after the branch, the branch point can be surely transmitted to the driver. Also, when another branch road 2 (not shown) branches again on the branch road 2, the second branch is formed only in a partial section before and after the branch point.
The illuminating device 12 is installed, and it is easily and surely recognized that it is a new branch point. By doing so, it is possible to intuitively notify the existence of the branch point.

Further, in the present invention, at least the second lighting device 12 having a different light color from the branch point toward the branch path 2 may be arranged for a certain section, but as shown in FIG. 1 or FIG. It is desirable to dispose the second lighting device 12 having a different light color also in a certain section on the front side of the branch point. In this case, on the front side of the branch point, the second lighting device 12 may be installed at the edge of the road on the branch side according to the distance at which the lane can be safely changed. For a highway, for example, a lane for branch on the main line 1 Can be installed in

FIG. 3 is an explanatory view showing still another example of the display system according to the present invention. The embodiment is substantially the same as the embodiment shown in FIG. 1, except that the second lighting device 12 is used.
As the example, a fluorescent lamp device is used. As described above, as the second lighting device 12 having different light colors, a lighting device using a fluorescent lamp or an LED may be used in addition to the mercury lamp. Of course, a color filter or the like may be used to change the light color using the same light source.

FIG. 4 is an explanatory view showing still another example of the display system of the present invention. In this embodiment, a sign 5 indicating a road branch, for example, as shown in FIG. 5, is provided in front of the branch point, and a display indicating that the main line 1 is displayed on the road surface before the branch point. 4a and a display 4b indicating the branching direction are provided. These signs 5 and display 4
In a and 4b, the display color on the sign 5 and the display color on the road surface and the light color of the lighting device are set to be substantially the same.
That is, when a high-pressure sodium lamp is used for the first lighting device 11 on the main line 1, the display 4a indicating that the main line 1 is on the main line 1 is drawn in an orange color, and the second line on the branch path 2 is also displayed. If a mercury lamp is used as the lighting device 12 of the
The indication 4b to the effect that it is above is drawn in a white color. Also in the marker 5, the arrow 5a indicating the direction of the main line 1 is drawn in an orange color, and the arrow 5b indicating the branching direction is drawn in a white color. In this way, by making the display colors of the displays 4a and 4b on the road surface and the sign 5 substantially the same as the light colors of the first lighting device 11 and the second lighting device 12 indicating the traveling direction, the sign 5 is displayed. It is also possible to intuitively know the branch information from the displays 4a and 4b on the road surface. Further, not only the signs 5 and the displays 4a and 4b on the road but also the screen display on the car navigation system, the display such as the road map, etc. are displayed on the road surface 4 concerned.
It is preferable that the display colors of a and 4b substantially match. With such a display system, the branch information can be memorized in advance as a color image before the arrival at the branch point, and further safe driving can be performed.

FIG. 6 is an explanatory view showing still another example of the display system of the present invention. In the embodiment, an auxiliary lighting device is provided separately from the main lighting device 10, and the illumination of the auxiliary lighting device fulfills the function of branching. That is, the first auxiliary lighting device 21 and the second auxiliary lighting device 22 having different optical characteristics, for example, different light colors from each other are used for the auxiliary lighting device, and the first auxiliary lighting device 21 and the second auxiliary lighting device 22 located before and after the branch point on the branch side road end. In the partial section, the second auxiliary lighting device 22 is arranged from the main line 1 to the branch road 2. Further, the first auxiliary lighting device 21 having the same light color is continuously arranged in a part of a section before and after the branch point of the non-branch side road end. That is, the arrangement of the first auxiliary lighting device 21 and the second auxiliary lighting device 22 may be the same as the case where the main lighting device 10 is used, and branching can be performed by this.

These two types of auxiliary lighting devices 21, 22
Is separate from the main lighting device 10 for illuminating the road surface, and is provided, for example, on a lighting pole to which the main lighting device 10 is attached or on a roadside strip of a road. The main lighting devices 10 are unified by the same light source, and are arranged at both left and right road ends of each road along the main line 1 and the branch road 2 to illuminate the road surface of the main line 1 and the branch road 2. At this time, it suffices that the first auxiliary lighting device 21 arranged on the main line 1 and the second auxiliary lighting device 22 arranged on the branch road 2 have different light colors, and the first auxiliary lighting device 21 arranged on the main line 1 is arranged on the main line 1. First auxiliary lighting device 2
1 and the color of light of the main lighting device 10 may be the same. Therefore, for example, when a high pressure sodium lamp is used for the main lighting device 10, a high pressure sodium lamp is used for the first auxiliary lighting device 21 on the main line 1 and a high pressure sodium lamp is used for the second auxiliary lighting device 22 on the branch path 2. A mercury lamp may be used.

When the auxiliary lighting devices 21 and 22 are used, it is sufficient to provide the auxiliary lighting devices only in a part of the section before and after the branch point. If it becomes, the first auxiliary lighting device 2
It is also not necessary to place 1. Further, in the illustrated example, the first auxiliary lighting device 21 is first arranged at the branch side road end on the left side of the main line 1 before the branch point, but this first auxiliary lighting device 2
No. 1 is not essential, and the second auxiliary lighting device 22 can be suddenly arranged to inform the existence of the branch road 2 when the vehicle approaches a certain distance before the branch point.

Thus, by using the auxiliary lighting devices 21 and 22 in addition to the main lighting device 10, it is possible to display the branch of the road. In this case, it suffices to install the auxiliary lighting devices 21 and 22 only in a necessary place, and it is possible to easily add more after the main lighting device 10 is installed.

Further, even if the road has two or more branches, it can be installed in the same manner. FIG. 7 shows an example thereof, and in this embodiment, an auxiliary lighting device is used. In the illustrated example, the first auxiliary lighting device 21 having the same light color is arranged along the main line 1, and the first auxiliary light 2a has the second auxiliary light having a different light color from the front side of the branch point. A device 22a is arranged, and a second auxiliary lighting device 22b, which emits a different light color from the branch point toward the traveling direction, is arranged on the second branch 2b. As a result, along the first branch road 2a, from the front of the branch point to the second road different from the main line 1 along the branch road 2
Light colors are arranged, and the first light color without a break is arranged along the main line 1. Also, the second
In the branch path 2b, the third light color having a further different color is arranged in the traveling direction after the branch point. Therefore,
If the driver driving on the main line 1 needs to proceed on the main line 1, he or she may proceed with a light train having no change in color arrangement as a guide, and when traveling on the first branch path 2a, a second auxiliary lighting having a different light color. The path may be set based on the light train of the device 22a. In addition, when going through the second branch 2b, the second
It is sufficient to proceed with the light train of the auxiliary lighting device 22b as a guide.

As described above, according to the present invention, the light color of the illuminating device at the branch side road end and the light color of the illuminating device at the non-branch side road end arranged along the road before and after the branch point are made different from each other. The road branch can be visually displayed, and the driver can intuitively know the branch.

Further, in each of the above examples, the case where the road is branched has been described, but when the road is merged, it is possible to perform the merge display of the road by applying similar illumination. For example, FIG. 8 shows a case where the merge channel 3 merges on the main line 1 from the left side. In this embodiment, a first lighting device 11 and a second lighting device 12 having different light colors are used, and these also serve as the main lighting device 10. In the illustrated example, the left and right road ends of the main line 1
For example, a plurality of first lighting devices 11 such as a high pressure sodium lamp are arranged. On the other hand, in the merge channel 3, the first lighting device 11 on the main line 1 is provided within a certain section before the merge point.
The second illuminating device 12 having a different light color is arranged at both left and right road ends. In addition, after the merging, at the merging side road end within a certain section from the merging point, that is, the left side road end on the main line 1, as the main lighting device 10 on the main line 1, a second lighting device 12 having a different light color is provided. It is arranged. The distance after the merging is set to be at least the visual distance S corresponding to the design speed. Further, in this joint flow path 3, the first lighting device 11 having the same light color as that of the first lighting device 11 on the main line 1 is arranged on the front side of the section where the second lighting device 12 is arranged. Has been done. As a result, different light trains can be seen from just before the merge point to only a certain section after the merge with the main line 1. Therefore, the driver driving on the confluence line changes the light color of the lighting device from the light color of the first lighting device 11 (for example, orange of a high-pressure sodium lamp) to the light color of the second lighting device 12 (for example, white of a mercury lamp). By changing to, it is possible to know that there is a merging road ahead. Furthermore, the light color of the second lighting device 12 (for example, the white color of a mercury lamp) in front of the confluence.
From this, it is possible to know that the main line 1 is completely merged by knowing that the light color has changed to the light color of the first lighting device 11 (for example, the orange color of a high-pressure sodium lamp). On the other hand, even for a driver driving on the main line 1, the light color of the lighting device arranged on the left side of the main line 1 is the light color of the first lighting device 11 (for example, the orange color of a high-pressure sodium lamp).
From this, by knowing that the light color of the second lighting device 12 has changed (for example, the white color of a mercury lamp), it is possible to intuitively understand that there is the merge channel 3 from the left side.

As described above, in the present invention, the light color of the main illuminating device 10 (second illuminating device 12) or the second auxiliary illuminating device 22 connected to the branch path 2 is the main illuminating device 10 (on the main line 1). Since it is different from the light color of the first lighting device 11) or the first auxiliary lighting device 21, it is possible to intuitively understand the branch path 2 that branches. Further, the light color of the main lighting device 10 (second lighting device 12) or the second auxiliary lighting device 22 connected from the joint flow path 3 is the main lighting device 10 on the main line 1 (first
The illuminating device 11) or the first auxiliary illuminating device 21 has a different light color, so that the merging passage 3 can be intuitively grasped. On the other hand, the same color of light is arranged on the side of the main line 1 where there is no branching or merging. Therefore, when it is desired to branch, the lane may be changed according to the arrangement of the different light colors, and in order to avoid the merging vehicle, the lane may be changed in advance before the merging point. In this way, it is possible to intuitively know branching and merging visually, and it is possible to contribute to the prevention of traffic accidents caused by forced lane changes.

Further, in each of the above-mentioned examples, the case where the main lighting device 10 is arranged at both left and right road ends in the one-sided road has been described, but the present invention can be applied to the case where the road is a two-way road. In this case, although not shown,
The first lighting device 11 with no change in light color is arranged along the center line such as the median strip, and the first lighting device 11 with different light color is provided at the road end (usually left side) of the main line 1 branch side. And the second
It is only necessary to use two types of the illumination device 12 of No. 1. In addition, the same applies to the case of merging.

[0038]

According to the present invention, the optical characteristics of the illuminating device arranged for each branching / merging road are different, and along the non-branching / non-merging side road end of the road extending before and after the branching / merging point. Means that a light train having the same optical characteristics is arranged, and that a light train having different optical characteristics is arranged at least in a certain section after branching or before merging along the road edge of the branching / merging side. Become.

Therefore, a driver of an automobile or the like traveling on a road can observe light trains having different optical characteristics from a distance, and can intuitively know that the road branches or joins. Therefore, whether the driver intends to go in the diverging direction or the straight direction, the driver can make a decision without reading the character and can drive with a margin. As a result, vehicles can be separated and guided smoothly, and it can be expected that the number of accidents at the time of branching and merging will be reduced.

At this time, by arranging illumination devices having different optical characteristics continuously in a part of the branch / merging point on the front side of the branch / merging point or on the side after the converging / merging point, the light color of the light color is distributed before and after the branch / merging point. Different light trains can be observed.
As a result, the fact that the road is diverging or merging can be visually recognized even from the front, and the lane can be changed from an early stage.

These illuminating devices can be installed with a similar installation cost and installation method as the conventional one by using, for example, a main illuminating device that illuminates the road surface. In addition to the main lighting device that illuminates the road surface, an auxiliary lighting device that is arranged along the branching / merging road can be installed only in a necessary section. As a result, it can be installed at low cost and can be easily installed even after the main lighting device is installed.

These systems can be easily implemented, for example, by changing the light color of the illuminating device, and can be easily installed by a known high pressure sodium lamp or mercury lamp.

If the display color of the information display and the light color of the lighting device are made to be substantially the same color together with the information display showing the road branch / merge information, it is possible to intuitively judge the character information. , You can easily know the direction you want to go.

In particular, the effect of the present invention can be further exerted by installing the device in a tunnel where many accidents due to branching and merging occur.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of a branch / merge display system according to the present invention.

FIG. 2 is an explanatory diagram showing another example of the branch / merge display system according to the present invention.

FIG. 3 is an explanatory diagram showing still another example of the branch / merge display system according to the present invention.

FIG. 4 is an explanatory diagram showing still another example of the branch / merge display system according to the present invention.

FIG. 5 is an explanatory diagram showing still another example of the branch / merge display system according to the present invention.

FIG. 6 is an explanatory diagram showing still another example of the branch / merge display system according to the present invention.

FIG. 7 is an explanatory diagram showing still another example of the branch / merge display system according to the present invention.

FIG. 8 is an explanatory diagram showing still another example of the branch / merge display system according to the present invention.

[Explanation of reference symbols] 1 main line 2, 2a, 2b Branching path 3 Joint flow paths 4a, 4b Display on road surface 5 Marking 10 Main lighting device 11 First lighting device 12 also serving as main lighting device 12 First lighting device also serving as main lighting device Second lighting device 21, 21a, 21b Second lighting device which is an auxiliary lighting device 22, 22a, 22b Second lighting device which is an auxiliary lighting device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Seigo Mori             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F term (reference) 2D064 AA01 AA11 AA24 BA14 BA19                       EA02 EA03 EB02 EB03 EB04                       EB05 EB38 GA00 JA02                 5H180 AA01 GG07 GG20 HH11 HH14                       JJ25

Claims (14)

[Claims] 1. A branch / merge display system, characterized in that the lighting devices arranged for each branch / merge road have different optical characteristics. 2. The first lighting device is arranged along a non-branching / non-merging side road end of a road extending before and after the branching / merging point, and the first lighting device is arranged along the branch / merging side road end of the road. A second lighting device having optical characteristics different from those of the first lighting device,
A branching / merging display system, wherein the branching / merging display system is arranged in at least a part of the branching / merging point on the branching road side or the confluence side. 3. The branching device according to claim 2, wherein the second lighting device is continuously arranged in a part of the branching / merging point on the front side of the branching point or on the side after the merging point. Confluence display system. 4. The branch / merge display system according to claim 1, wherein the lighting device is a main lighting device that illuminates a road surface. 5. The illuminating device is an auxiliary illuminating device arranged along the branching and merging road separately from the main illuminating device that illuminates the road surface.
Or the branch / merge display system according to any one of 3). 6. The branch / merge display system according to claim 1, wherein a light color of the lighting device is changed. 7. An information display showing road branching / merging information is provided, and a display color of the information display and a light color of the lighting device are substantially the same color. The branch / merge display system described in. 8. The optical characteristics of the illuminating device arranged at least within a visual distance according to the road design speed after the junction / merging point of the road are made different.
7. The branch / merge display system according to any one of 7. 9. The branch / merge display system according to claim 1, wherein a branch / merge point of the road is located inside the tunnel. 10. A branch for indicating a road branch / merging
A merging display device, comprising a lighting device arranged along a branching / merging road, wherein the lighting devices arranged along the respective roads have different optical characteristics. . 11. A branch for indicating a branch / merge of a road
A merging display device, which comprises a first lighting device arranged at a non-branch side road end or a non-merging side road end, and a first lighting device arranged at the diverging side road end or a merging side road end. Second with different characteristics
And a second illuminating device is arranged at least at a point after the junction or in front of the junction at the junction side road edge side or the junction side road edge side. Display device. 12. The branching / merging display device according to claim 10, wherein the lighting device has different light colors. 13. The lighting device also serves as a main lighting device for illuminating a road surface.
Or the branch / merge display device according to any one of 12 above. 14. A lighting device having different optical characteristics is arranged at least within a visual distance corresponding to a road design speed after a branching / merging point of the road, according to any one of claims 10 to 13. Branching / merging display device described.