JPS63148399A - Display for traffic guidance information panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of displaying a traffic guide board for displaying road congestion.

[Conventional technology]

In recent years, with the rapid increase in the amount of automobile traffic, traffic congestion has occurred in various places, and pollution caused by exhaust gas has become a problem. For this reason, it is necessary for each vehicle to independently select a relatively empty road, or to be given certain restrictions or instructions for detours. Especially when the traffic is heavy and congested, the biggest concern for drivers is to obtain information on the locations of congestion and the degree of congestion, and ultimately how long it will take to reach the destination. That's a thing.

Conventionally, as a means of eliminating such traffic congestion, when there is a branch road, a display indicating which direction of the branch road is congested is made so that it is easy to see which direction is more vacant.

[Problem that the invention seeks to solve]

However, such conventional methods only display which of several roads are congested, but cannot display the degree of congestion, cause, or location. The problem was that it was insufficient as a display board.

[Means for solving problems]

In order to solve such problems, this invention divides the road displayed on the display board into complex sections, and calculates the degree of congestion by dividing the average speed or travel time of each section by the reference speed or reference travel time. The display method is compared with a standard value and changes depending on the degree of congestion.

[Effect]

The degree and content of congestion can be determined from the display status.

[Embodiment] Fig. 1 is a diagram showing an embodiment of the present invention, in which 1 is an iron pole for attaching a display board provided on a road, 2 is a display board,
For example, the display board 2 shows roads indicated by thick lines with symbols 21 to 21.
230It is divided into three areas and displayed. In this case, each section is displayed in three types: red lighting, neutral color (orange) lighting, and off. In addition, since drivers need to make comprehensive judgments intuitively in a short period of time, it is difficult to distinguish between congestion situations even if the displayed sections are too small, and it is also difficult to judge when there are many stages of congestion. Therefore, it is appropriate to divide the stages of congestion into three stages based on the criteria shown in Table 1.

Table 1 Here, the degree of congestion is the average speed or travel time for each section divided by the standard speed or standard travel time, and the standard travel time is the time it takes to pass through that section when it is not crowded.

Incandescent light bulbs can be used to make such displays, but in that case, maintenance is difficult in the event of a disconnection, so LED light bulbs can be used.
Since the service life is long, maintenance becomes easier. The current state of development at the time of filing is that red and yellow (dose lines) emit extremely bright light, and other colors have not yet produced a practical amount of light for outdoor use.

From these facts, for example, red and yellow LED elements can be assembled into modules as shown in Figure 2, arranged in 5 rows as shown in Figure 3, and then placed next to each other. The road is shown as wide.

In this case, each module can be lit only in red or lit in red and yellow at the same time. If you look at something with red and yellow lights on at the same time from a distance, it will appear orange. By the way, it has been confirmed that the visibility of colors to the human eye is twice as good for red in daytime and on clear skies as compared to yellow, and that in bright outdoor areas where only the red IJD is lit and red Experiments have confirmed that when the yellow and orange lights are turned on simultaneously and the displays are placed next to each other, they appear to be about the same brightness, and neither one of them appears abnormally bright. It was also confirmed that at night, the brightness of both the red and yellow LEDs should be about 0 to 1/20 of the daytime brightness.

FIG. 3 is an enlarged view of the bold line part in FIG. 1, and the section marked with the symbol "A" corresponds to section 21, in which only the red LED is lit to indicate congestion stage 3. The part marked with a symbol "・" indicates congestion stage 2 by lighting up red and yellow LEDs at the same time. In the section marked "2", the LED is off and the traffic jam is at stage 1.
It shows. The part marked by the symbol "mouth" is an off-light area provided to make the boundary between the red display area and the orange display area clear. When red and orange lights are lit next to each other, the border between them can be clearly distinguished, but when exposed to direct sunlight, it can be a little difficult to distinguish them because they are similar colors. In such a case, as shown in FIG. 3, providing an unlit area indicated by the symbol "mouth" will restrict visibility.

As a specific method of creating such a darkened area, if adjacent sections have the same congestion stage indication, no darkened area will be created, but if the traffic congestion level indications are different, then the darkened area will be automatically created. This can be achieved by configuring the system to provide the following. Furthermore, even in the case of different traffic congestion stage displays, if one is in the off state, there is no need to provide an off-light area at the boundary. The appropriate length of the unlit area at this boundary is 1 to 2 rows of modules where EDs are collected.If it is made too long, it becomes difficult to distinguish between the unlit area and the unlit area of congestion stage 1, so it is appropriate. Not. Here, the unlit area of the symbol "guchi" is "i".

If either r-what is off and "a" is displayed, the section "a" may be displayed; If the areas ``A'' and ``1'' are displaying the same congestion stage, it is appropriate to display the area with a smaller display area.

Figure 4 is an example of a display when the road is closed due to a traffic accident, etc. In the area between the symbols, LEDs representing wide roads are lit in an X-shaped dot spelling to indicate that the road is closed. The area of congestion caused by the traffic stop is indicated by a red symbol "T". The area with the symbol ``be'' has the same display color as the area with the symbol [ho J, r) It is automatically provided in the same way as the unlit area provided in the area.By turning off part of the LED module row in this way, it becomes easy to distinguish the display contents even if they are of the same color.Here, The symbol “Beno area is “÷”
It may also be possible to display the garden area even if the area of ``T'' and ``T'' have the same traffic jam or if either ``shrine'' or ``T'' is off, and the area of ``T'' may be displayed. It may also be displayed.

As mentioned above, it is effective to provide an unlit area at the boundary between adjacent display areas in order to make it easier to distinguish between display contents, but the length of the unlit area may cause the display to blur when the surrounding area is dimly lit. It is necessary to make the lamp longer than usual, but in the nighttime dimming mode, the blurring phenomenon can be suppressed by dimming, so the normal length is sufficient.

Also, if the surrounding area is extremely bright due to the setting sun, etc., the LED
Since the luminous intensity of the light is easily negative compared to the surrounding light, it is difficult to distinguish the displayed colors, and it is necessary to increase the length of the unlit area. It is effective to vary the length of the unlit area at the border based on the surrounding brightness in this way. As a means for realizing this, a light receiving element may be provided on the surface of the display board 2 shown in FIG. 1, and the length of the unlit area may be adjusted based on the result detected there.

As shown in FIG. 4, when displaying an "X" indication, there is no problem if there are five or more rows of LED modules, but if there are fewer than four rows, the X mark cannot be displayed in dotted form.

In particular, if a dark area is provided at the boundary to distinguish the display contents as described above, this becomes a problem because the display area becomes narrow. In this case, by using a part of the adjacent area for displaying the X mark, the X mark can be displayed in a dotted manner even if the display area is small. Additionally, when a road is divided into multiple sections, the display area corresponding to each section may only have three rows of LED modules, as shown in Figure 3, due to the external shape of the guide board. Since the display area is small in this area, there is a possibility that even if a red or orange display is performed, it may not be visible from a distance. Therefore, as shown in FIG. 5, for the area marked "C", two lines of the area marked "2" are used for the area 1, thereby increasing the display area. In this case, the adjacent display area may be used in its entirety instead of in part.

The above explanation uses an example in which the LED module is composed of 8 yellow LED modules and 8 red LED modules. and may be displayed.

Although the LID module has been explained in the form of a fish, it may also be round, or it may have a special shape that matches the shape.

Although the degree of traffic congestion is displayed by turning on and off LEDs, all or a part of these may be displayed by blinking at a fixed period.

〔Effect of the invention〕

As explained above, in this invention, the group of light emitting diodes displayed as a road is divided into a plurality of sections and each section is displayed in accordance with the degree of traffic congestion.
Not only is this effective in relieving congestion because it helps in making decisions when choosing a route, but it also provides psychological stability to drivers, contributing to safe driving.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a light emitting diode module, and FIGS. 3 to 5 are diagrams showing a state in which the light emitting diode modules are displayed side by side. 1... Iron pillar, 2... Display board, 21-23...
・Display area.

Claims (4)

[Claims] (1) In the display method of a traffic guide board that displays the congestion status of a road, the road is displayed by a group of light emitting diodes that are sequentially adjacent to each other, and the group of light emitting diodes is divided into a plurality of sections; A method for displaying a traffic guide board, characterized in that a section illuminates according to the degree of traffic congestion. (2) The method for displaying a traffic guide board according to claim 1, wherein the degree of traffic congestion is determined by controlling the type of emitted light color. (3) The display of the traffic guiding information board according to claim 1, wherein the portion divided into a plurality of sections is provided with a light-off section at the boundary portion when both adjacent sections are lit. Method. (4) The method for displaying a traffic guide board as set forth in claim 3, wherein the length of the dimming section is increased or decreased depending on the surrounding brightness.