JPS586886Y2 - road sign body - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a road sign that is installed on the pavement and guides the driver's line of sight by retroreflecting light beams projected from a vehicle at night.

In order to install a reflector that causes retroreflection using a group of reflective elements in the form of an equilateral triangular pyramid and use it as a road sign, it is important to consider its optical effectiveness, the degree of impact on the vehicle when it runs over, and From the viewpoint of dust accumulation on the reflective surface, it is desirable that the reflective device be a slope with an appropriate inclination angle relative to the horizontal surface on which it is installed.

That is, it has already been proposed that the above-mentioned requirements can be substantially satisfied if the reflective part is inclined within about 15 to 45 degrees with respect to the horizontal plane.

According to this, if the reflective part is tilted within the above-mentioned angle range, the optical effectiveness is sufficiently maintained, and the accumulation of dust on the reflective surface is prevented by contact with the tires of the vehicle. It has the characteristic of retaining the reflective effect through the wiping action.

However, while the contact of vehicle tires with the reflective surface satisfies the wiping action, it also causes damage such as scratches on the surface, which in turn causes diffused reflection on the surface and reduces the reflective effect, which is fatal to the reflector. This will lead to serious drawbacks.

Therefore, in view of the above drawbacks, the present invention aims to maintain the reflective effect semi-permanently without causing scratches on the reflective surface even if the tires of a vehicle come into contact with the reflective surface of the sign. It is.

Examples will be specifically described below with reference to the drawings.

The sign body 1 is made of transparent or semi-transparent material such as synthetic resin and is formed into a cube, and is installed with the top surface 2 and its four sides inclined at an appropriate angle θ, for example, within 15 to 45 degrees. 3, 3..., and this side surface serves as a reflective part, and the reflective part is a substantially flat surface 4.
and a right triangular pyramid reflective element group 5 provided on the back side thereof.
It is made up of.

The outer surface 4 is substantially a flat surface, but considering its purpose, it requires a small amount of curvature, and in reality has a curvature of about 200 to 800 R, and there are multiple curves integrally formed on the outer surface 4. The protrusions 6 are arranged uniformly on the plate surface.

The shape and size of the protrusion 6 can be arbitrary, but the purpose of installing the protrusion 6 is when installing and using this road sign on the pavement.
The purpose of this is to prevent the tire from coming into contact with the reflective surface when it rides on the reflective surface, and to prevent the tire from slipping on the west side of the reflective surface. It is desirable that the mutual spacing, shape, and size be such that the tires of the vehicle do not come into contact with the surface and that slipping can be effectively prevented.

As an example of the shape of the protrusions 6 provided according to the present invention, in FIG. may be arranged uniformly on the outer surface as wart-like protrusions as shown in FIGS. 3 and 4, or may be provided as protrusions with a serrated cross section.

When arranging the protrusions 6, in order to improve the slip prevention and retroreflection efficiency, etc., the protrusions 6...
... are not provided sparsely on the outer surface, but are arranged in rows at relatively small intervals in the vertical direction as shown in the figure, and at the smallest possible intervals in the horizontal direction as well. However, in order to improve the reflection effect, at least five rows of reflective elements are arranged in parallel while maintaining the area of at least five rows of the countless elements provided on the back side.

Further, the protrusions 6 may be arranged on the four outer surfaces 4...4.

In this way, the sign body 1 has its hem portions 3, 3...
For example, aluminum vapor deposition 7 is applied to the reflective element group 5 in order to prevent the reflective element group 5 from losing its function in the internal space surrounded by
After that, a solid core body 8 is filled and the hem portions 3, 3...
Molding is done in one piece so that it does not protrude beyond the end of...

The sign body 1 constructed as described above is installed on a pavement by applying an adhesive to its lower surface.

According to the present invention, the reflector section of the marker is composed of a flat surface and a group of reflective elements in the form of a regular triangular pyramid on the back side, and a plurality of protrusions are integrally provided on the flat surface of the reflective section. Vehicle tires do not come into direct contact with the flat surface (see Figure 6), thus preventing damage to the surface and maintaining sufficient optical effectiveness at all times, preventing accidents caused by diffused reflection due to scratches, etc. can be prevented.

Furthermore, since multiple protrusions are formed almost uniformly and integrally on the outer surface, it has excellent impact resistance that does not compensate for the overall strength, and also helps save material during molding, making it suitable for low-cost production. Accordingly, it is possible to provide a road sign body.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the road sign body of the present invention.
Fig. 1 is a perspective view, Fig. 2 is a central cross-sectional view thereof, Fig. 3 is a perspective view showing another embodiment, Fig. 4 is a plan view similarly showing another embodiment, and Fig. 5 is its central cross-sectional view. The central cross-sectional view, FIG. 6, is an explanatory diagram when a vehicle tire is mounted on the vehicle. 1... Sign body, 3... Hem, 4...
...Outer surface, 5...Reflection element group, 6...
...Protrusion, 8... Core body.

Claims (1)

[Scope of utility model registration request] In a sign that is installed on the pavement and reflects the projected light, the outer surface that is substantially flat and slopes at an acute angle with respect to the horizontal surface on which it is installed, and the back surface of the sign that covers almost the entire surface. A reflection device is constituted by a group of reflective elements in the form of triangular pyramids, and the outer surface is integrally provided with a plurality of protrusions to prevent contact with the tires of an approaching vehicle, and the protrusions are arranged in the vertical direction. 1. A road sign body characterized in that reflective elements are arranged in rows at relatively small intervals relative to each other, and are arranged in parallel while maintaining an area of at least five or more rows of elements having back sides in the left-right direction.