JP3738863B2 - Information display method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display method for displaying road information by installing an information board on a ceiling or side wall of a highway or a general road tunnel.
[0002]
[Prior art]
As a method for displaying road information, a method of installing an information board at an upper part or a side part of a road is generally used.
[0003]
In addition, as a road information board, a light source such as an LED is currently arranged in a dot matrix to construct a large screen display unit, and lighting / flashing of each light source is controlled by a drive circuit to obtain a desired character or figure. Etc. are used.
[0004]
[Problems to be solved by the invention]
By the way, this type of road information board is often installed in tunnels, but existing information boards should be installed in places where the ceiling is low and there are restrictions on the building limits, such as tunnels without emergency parking zones. I can't.
[0005]
The present invention has been made in view of such a situation, and an object thereof is to provide an information display method capable of displaying road information even in a place where an effective space cannot be obtained due to a building limit.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a display unit for displaying road information when a display unit is displayed on a ceiling or side wall of a highway or general road tunnel to display road information such as characters and figures. the divided by a line along the horizontal or vertical direction is divided into a plurality of regions, together with the use of the respective one or two rows of approximately line display panel on the display of the respective divided regions, a plurality of line display plate, roads and arranged at predetermined intervals from each other along the traveling direction of the road (for example, the depth direction of the tunnel), the information display method for displaying Therefore predetermined road information to all its line display panel, the plurality of As the line display board, a display board in which the light emitting parts are arranged in a dot matrix is used, and the dot interval of the light emitting parts of each line display board is set in the arrangement direction of the line display board. Based on the column line-display board, characterized by widely with increasing number columns of the line panel.
In the present invention, it is preferable that the arrangement pitch of the plurality of line display boards in the road traveling direction is increased as the number of lines of the line display boards increases.
[0007]
By arranging the line display boards 1 and 1 at intervals as described above, as shown in FIG. 1, when the vehicle C is located at a certain point in front of the line display board 1 (for example, 60 m ahead). Depending on the relative positional relationship between the driver's viewing angle and depth, each line display board 1 .. 1 appears to be connected continuously in the vertical direction, and as a whole is like a flat display screen. Visible (see car window image in Fig. 4).
[0008]
Thus, in the information display method of the present invention, road information can be displayed as long as there is a space for installing one or two lines of line display boards, so that the ceiling is low, such as a tunnel without an emergency parking zone. It can be applied to road information display in places where there are restrictions on building limits.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In this embodiment, as shown in FIG. 3, a line display board 1 is used in which light-emitting portions D ·· D using LEDs or the like as light sources are arranged in a dot matrix (2 columns × 112 rows). The size of each dot of the line display board 1 is 30 mm square, and the dot interval is about 30 mm to 32 mm. The overall dimensions of the line display board 1 are 3.7 m wide × 60 mm high.
[0010]
It should be noted that the width dimension and the dot interval of the line display board 1 are appropriately changed in consideration of the viewing angle and depth, the situation of the installation location, and the like.
In this embodiment, as shown in the side view of FIG. 1 and the plan view of FIG. 2, eight line display plates 1... 1 are arranged along the depth direction of the tunnel T on the ceiling wall of the tunnel T. When the line display plates 1 and 1 are viewed from a certain point in front by arranging them at predetermined intervals (intervals of about 0.9 m to 1.1 m), they are shown in the car window image of FIG. Thus, the road information is displayed as if it is displayed on one information board.
[0011]
Here, in the arrangement shown in FIG. 1, the height of the ceiling surface of the tunnel T is 5.0 m, and the visual field height of the driver is 1.2 m. (See the simulation calculation method described in the above). As a result, it was found that the characters can be sufficiently recognized at a point 60 m ahead of the line display board 1 in the first row.
[0012]
In the above embodiment, the dot interval of the line display board 1 and the installation interval (arrangement pitch) of the line display board 1 may be set to a constant value, but in this case, characters and the like are distorted in a trapezoidal shape. Since there is a possibility of being visible, when it is desired to make the display characters look like a rectangle at a certain point in front of the display plate (a point where character recognition is possible), the line display plate 1 in the first row is set to the dot interval. As a reference, it is better to increase the width as the number of columns increases. Also, for the same reason, it is better to increase the interval between the line display boards 1 as the number of columns increases.
[0013]
Furthermore, in the above embodiment, an example in which two rows of line display boards are used has been described. However, the information display method of the present invention can be implemented even if one row of line display boards is used. Further, when there is a relatively large space at the installation location, it is possible to use three or more lines of line display boards.
[0014]
Furthermore, the information display method of the present invention is not only the information display of the upper and side walls of the tunnel, but also, for example, places where roads and railways are dense and there are restrictions on the building limits of the upper part and side part of the road, etc. It is also applicable to road information display in places other than tunnels.
[0015]
The technical idea of the present invention can also be applied to various information displays in fields other than road information display.
[0016]
【Example】
An example of simulation calculation of how the information display looks according to the information display method of the present invention will be described below.
[0017]
First, the appearance simulation employed in this example is a method of creating a 3D graphic by coordinate transformation of a three-dimensional space. Specifically, as shown in FIG. Three types: Zx, Zy, Zz, visual field coordinate system with the coordinate viewpoint of display (mapping plane) as the origin; Vx, Vy, Vz, and information plate coordinate system Bx, By, Bz for information plate light source data Assuming the spatial coordinate system of, the calculation parameters are given to these coordinate systems, and the mapping p onto the plane (spherical surface) perpendicular to the field vector Vi is calculated, so that the light source (each dot of the display board) can be seen. This is a method of simulating.
[0018]
The parameters used in the simulation calculation include the position of the driver from the shoulder, the distance from the information board, the height of the line of sight, the direction of the field of view, the size of the field of view (distance from the viewpoint to the mapping), etc. The information board reference point includes the installation position from the road shoulder, the installation height, and the like.
[0019]
Then, by the above-described calculation method of the visual simulation, a car window image was created under the following conditions. As a result, the vehicle window images shown in FIGS. 6 to 9 were obtained.
[0020]
<Simulation conditions>
Line display board; 2 columns x 112 rows (1 dot 30 mm square)
Dot interval: 30 mm to 34 mm
Number of installed lines; 8 row line spacing; 916 mm to 1107 mm
Display board height: 5.0m
Gaze height: 1.0m
Distance from display board: 80m, 60m, 40m, 20m
However, as the dot interval and the line interval, larger values were adopted as the number of line rows increased between the above numerical values.
[0021]
By the above simulation calculation, it can be confirmed that characters can be sufficiently recognized at a point 60 m away from the display board and that the character seen at this point is a rectangle. From such simulation results, the information display method of the present invention can be used. It was confirmed that the same level of display as the existing road information board was obtained.
[0022]
For reference, FIG. 10 shows an enlarged view of the character portion of the 60 m distance window image (FIG. 7).
[0023]
【The invention's effect】
As described above, according to the information display method of the present invention, a plurality of line display boards are arranged at predetermined intervals along the traveling direction of the road, and a predetermined interval is set by all these line display boards. Since road information is displayed, it is only necessary to have a space to install a line display board with a height of about 1 or 2 rows (for example, about 60 mm), so it is effective due to construction limits such as tunnels without emergency parking zones. It is possible to display road information even in places where no space is available.
[0024]
Further, when the information display method of the present invention is adopted, the projection amount of the display board from the ceiling or side wall surface of the tunnel can be made very small, so that the wind tunnel property of the tunnel is improved as compared with the existing road information board. is there.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention. FIG. 2 is a plan view showing the embodiment. FIG. 3 is a front view showing a configuration of a line display board 1 used in the embodiment of the invention. 4 is a diagram showing a display example of road information. FIG. 5 is a diagram showing a spatial coordinate system used for simulation calculation of a vehicle window image. FIG. 6 is a diagram showing an example of a vehicle window image obtained by the simulation calculation. Fig. 8 is a diagram showing an example of a car window image. Fig. 9 is a diagram showing an example of a car window image. Fig. 10 is a diagram showing an enlarged character portion of the car window image of Fig. 7. Explanation of]
1 ・ 1 Line display board D ・ ・ D Light emitting part T Tunnel C Car

Claims (2)

When displaying the road information such as characters and figures by installing the display on the ceiling and side walls of expressway and general road tunnels, the display is divided into multiple areas by dividing the display along horizontal or vertical lines. In addition, a line display board is used to display each of the divided areas, and the plurality of line display boards are arranged at predetermined intervals along the traveling direction of the road. in information display method that displays a predetermined road information,
As the plurality of line display boards, use is made of a display board in which light emitting parts are arranged in a dot matrix, and the dot interval of the light emitting parts of each line display board is set to the first column in the arrangement direction of the line display boards. An information display method characterized in that the line display plate is made wider as the number of columns of the line display plate increases with reference to the line display plate . 2. The information display method according to claim 1, wherein the arrangement pitch of the plurality of line display boards in the traveling direction of the road is increased as the number of lines of the line display boards increases.

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