JPH0414206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tunnel travel guidance display structure that provides visual stimulation to the driver of a vehicle traveling in a tunnel to guide the driver of the vehicle.

[Conventional technology and problems]

In recent years, sodium lamps have been widely used for lighting inside tunnels. This is because even if there is exhaust gas from a vehicle traveling in a tunnel, the light beam from the sodium lamp allows the vehicle traveling in front to be seen far away.

There are two types of sodium lamps: high-pressure sodium lamps and low-pressure sodium lamps. High-pressure sodium lamps are made by sealing sodium, neon, argon, etc. in an alumina ceramic arc tube with excellent translucency.The sodium vapor pressure inside the arc tube is raised to high pressure, emitting a warm golden white light, and mercury It has a high transparency that is more than twice that of a lamp. On the other hand, low-pressure sodium lamps have a gas tube filled with a mixture of sodium, neon, and argon, and emit monochromatic orange light to make objects appear sharper and to increase visibility in fog. It has the highest transparency among practical light sources.

Furthermore, these sodium lamps are used not only for lighting inside tunnels but also for lighting highways in mountainous areas where fog is likely to occur.

By the way, when driving in a long tunnel, the surroundings are monotonous with no visual changes, which may distract the driver's attention and cause an unexpected traffic accident. For example, if you are driving at a speed of 40km/h through a tunnel that is 10km long, you will have to drive for 15 minutes without any change. Furthermore, in a tunnel, it is difficult to immediately visually check the distance between your car and the car in front of you, and as mentioned above, if you are driving in a daze, there is a risk of accidentally rear-ending your car. . In the event that such an accident occurs,
It is extremely dangerous because it is inside a tunnel.

However, in the past, no consideration had been given to the driving guidance display, particularly its color scheme, which provides visual and mental peace of mind to the driver and provides appropriate stimulation under illumination by sodium lamps in tunnels.

[Purpose of the invention]

The present invention has been made in view of these points, and provides visual and mental comfort to the driver who drives the vehicle in a tunnel illuminated with sodium lamps, as well as providing appropriate stimulation, so that the driver can drive the vehicle in a tunnel illuminated with sodium lamps. The purpose of the present invention is to provide a tunnel travel guidance display structure that safely guides people through tunnels.

[Summary of the invention]

The in-tunnel driving guidance display structure of the present invention is provided with a black display part that appears blackish when irradiated with the light beam of a sodium lamp along the direction of vehicle travel in the tunnel, and in the middle of this black display part, the vehicle is traveling. It is characterized in that gray display portions that appear grayish with high brightness when irradiated with the light beam of the sodium lamp are provided at predetermined intervals in the direction.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

The present invention takes advantage of the fact that natural colors appear discolored under the light of a sodium lamp.

In other words, the inventor's experiments revealed that when exposed to the light from a sodium lamp, pink and orange reds appear to change to gray, whites appear to be yellowish, and green and violet appear to change color. Colors such as blue appear to change to black. Each of these colors appears as its own primary color when illuminated by the light beam of a vehicle's headlights. Among the colors that appear to change color, the colors that are suitable for calming the driver's eyes and encouraging safe driving are those that change to a blackish color when exposed to the light from a sodium lamp. In particular, medium or higher colors in the green family are preferable.

The present invention has been made based on such experimental results.

FIG. 1 shows an embodiment of the invention.

Figure 1 shows the roadway 2 and side wall 3 inside the tunnel 1.
It shows. The side wall portion 3 includes a plurality of sodium lamps 4 at predetermined intervals in the longitudinal direction of the tunnel 1.
is provided. The in-tunnel driving guidance display structure of this embodiment is arranged and installed on the center line in the case of oncoming lanes and on the lane separation line in the case of two lanes on each side. As shown in the figure, a black display part 5 (the shaded part in the figure) that appears black when irradiated with the light beam of the sodium lamp 4 is provided on the marking line along the vehicle running direction, and a part of the black display part 6 is provided. Gray display portions 6 (white portions in the figure) that appear as a highly bright gray color when irradiated with the light beam of the sodium lamp 4 are provided at predetermined intervals (for example, every 50 m). The black display portion 5 is formed by applying green, violet, blue, etc. ink to the surface of the roadway 2. Furthermore, the gray display portion 6 is formed by applying orange, pink, yellow, etc. ink to the surface of the roadway 2.

Next, the operation of this embodiment will be explained.

For the driver of a vehicle traveling on the roadway 2 inside the tunnel 1, the forward field of view is illuminated by the light beam of the sodium lamp 4, and a black linear black display portion 5 appears in the far distance. At the same time, gray display parts 6 that appear to be a grayish color with high brightness, which are clearly distinguished from the black display parts 5, appear to be scattered at intervals of 50 m. In the front part of the vehicle, when illuminated by the headlights, the black display part 5 appears, for example, in a green color, resting the driver's eyes and stabilizing his or her mind, and furthermore, the gray display part 6 appears in an orange color. to provide drivers with appropriate visual and mental stimulation. Moreover, the inside of tunnel 1 appears bright.

As a result, compared to the conventional monotonous tunnel where the driver has to drive in a daze without receiving stimulation, according to this embodiment, the driver can enjoy visual and mental peace while driving while receiving appropriate stimulation. You can always drive safely.

In addition, gray display portions 6 that exist at predetermined intervals
Since this functions as a mark to visually measure the distance between the vehicle and the vehicle traveling ahead, the driver can drive safely while always accurately grasping the distance between vehicles even in the tunnel 1.

Furthermore, as shown in FIG. 2, if the gray display part 6 is formed in the shape of a road stud colored orange or the like, it will give a vibrational stimulus to the driver when the vehicle's tires run over it, causing drowsy driving. It can also be prevented.

In addition, the gray display portion 6 is formed by a hollow rubber statue having a height of 40 cm, and the black display portion 5
It may be formed by providing a large number of passage studs at intervals of several meters.

In addition, the black display part 5 and the gray display part 6
may be provided in a linear form on the side wall portion 3 in the tunnel 1, or may be formed by coloring the entire side wall portion 3 and ceiling portion (not shown) of the tunnel 1.

Note that this combination of green color and orange color works in the same manner as described above even under illumination of a mercury lamp.

〔Effect of the invention〕

As described above, the tunnel driving guidance display structure of the present invention has a simple configuration, and provides visual and mental comfort to the driver who drives the vehicle in the tunnel under illumination with sodium lamps, as well as providing appropriate stimulation. Therefore, it is possible to always safely guide the vehicle to travel.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the interior of a tunnel showing one embodiment of the tunnel travel guidance display structure of the present invention, and FIG. 2 is a perspective view of another embodiment of the gray display area. 1...Tunnel, 3...Side wall portion, 4...Sodium lamp, 5...Black display area, 6...Gray display area.

Claims (1)

[Scope of Claims] 1. A black display portion that appears blackish when irradiated with the light beam of a sodium lamp is provided along the vehicle travel direction in the tunnel, and a black display portion is provided at predetermined intervals in the vehicle travel direction in the middle of this black display portion. and a tunnel travel guidance display structure comprising a gray display portion that appears in a grayish color with high brightness when irradiated with the light beam of the sodium lamp. 2. The tunnel travel guidance display structure according to claim 1, wherein the black display portion and the gray display portion are formed in a long linear shape in the vehicle traveling direction. 3. Claims 1 or 2, characterized in that the black display area is selected from green, violet, and blue, and the gray display area is selected from orange, pink, and yellow. The tunnel driving guidance display structure described.