JPH101622A - Paint for traffic sign on road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a paint for traffic sign on the road, capable of providing a road traffic sign that can be confirmed even at night. SOLUTION: An inorganic fluorescent pigment to emit fluorescence by irradiation with ultraviolet rays is mixed with a hot melt-based resin and glass powder to give a coating material. The coating material is used to form a traffic sign 2 on a road 1. The traffic sign 2 is irradiated with ultraviolet rays by light sources 3 to emit light on the traffic sign 2 and to make a driver of an automobile A check visually the traffic sign 2 to prevent the occurrence of an accident.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road marking paint used for marking road surfaces.

[0002]

2. Description of the Related Art In road traffic, various signs are provided on a road surface to ensure traffic safety and facilitate traffic. 2. Description of the Related Art Conventionally, signs on road surfaces are formed by applying lines, symbols, characters, and the like using wear-resistant white or yellow paint.

[0003]

By the way, the paint used in the conventional marking has a problem in road marking visibility at night as shown below. (B) Poor visibility outside the vehicle light irradiation area, especially in curved areas (b) Poor visibility when disembarking Normally, glass beads are fixed on the surface of the road marking to obtain the retroreflective effect of the vehicle light. However, during rainfall or when the road marking surface is submerged or wet, the retroreflective effect is completely lost, which is one of the causes of accidents during nighttime rainfall.

Accordingly, an object of the present invention is to make it possible for a sign provided on a passage to emit light by irradiating ultraviolet rays, to surely recognize the sign, and to effectively prevent the occurrence of accidents, especially during night driving. It is an object of the present invention to provide a paint for road marking that can be used.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention of claim 1 employs a constitution in which an inorganic fluorescent pigment which emits fluorescence by irradiation with ultraviolet rays is blended together with a hot melt resin and glass powder. It was done.

Here, the inorganic fluorescent pigment used is one that emits fluorescence when irradiated with ultraviolet light having a peak at a wavelength of 365 nanometers, and cannot be seen because the ultraviolet wavelength is outside the visible region of humans.

That is, the light source itself has the advantage that it does not hinder the visual recognition of the road sign or the sign, and the reflected light from the illuminated object does not hinder the visual recognition of the road sign or the sign. Not only can be provided, but also the display portion emits light by ultraviolet rays, so that the problems (a) and (b) can be solved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

The road marking paint of the present invention has a wavelength of 365.
An inorganic fluorescent pigment which emits fluorescence by irradiation with ultraviolet light having a peak of nanometer is blended together with a hot melt resin and a highly transparent glass powder.

[0010] The composition of the paint (hereinafter referred to as "fluorescent paint") used for marking on the road (% represents% by weight) is as follows. Hot melt resin 30-40% Inorganic fluorescent pigment (powder) 3-15% Glass powder (highly transparent) 60-70% Talc 0-15% Glass beads (highly transparent) (post-treatment) 5 10% to 10% Crushed stone or pigment for coloring 0 to 40% (preferably 2 to 40%) Composition of inorganic fluorescent pigment to be used (however, the chemical name: the following shows the element symbol of the activator) Y ₂ O ₂ S: EuBaMgAl ₁₆ O ₂₆ : Eu, Mn (Sr, Ca, Ba, Mg) ₅ (PO ₄ ) ₃ Cl: Eu Inorganic fluorescent pigments to be added to the fluorescent coating have a luminous property in addition to the above pigments. Fluorescent pigments can be used as appropriate.

As shown in FIG. 1 (B), after the construction is carried out by the conventional construction method using the conventional white paint 4, the material 5 having the above composition is melted by heating and the construction is carried out using the conventional equipment.

The coating thickness of the fluorescent paint portion is 0.5 to 1.5
mm, and the sum of the thickness of the undercoat and the thickness of the undercoating portion is equivalent to the conventional construction thickness.

The glass beads 6 are sprayed and fixed immediately after the application of the fluorescent paint.

As shown in the drawing, a sign 2 provided on a road 1 using the above-described fluorescent paint is illuminated by an ultraviolet light source 3 (black light).

In FIG. 1A, the sign 2 indicates the road 1
, But any line, symbol, or letter for the purpose of prohibition, designation, or instruction of a traffic method may be used. The light source that irradiates the mark 2 with ultraviolet light does not hinder the running or walking of the vehicle. The sign 2 may be attached to a dedicated pole, telephone pole, building, or the like so that the sign 2 can be irradiated from the position or location with ultraviolet rays. Since the ultraviolet wavelength is outside the visible range, it does not hinder the visibility of the sign or the sign. .

Since the construction is performed as described above, there is no need to change the currently laid display part at all, and there is an advantage that the operation can be simplified.

The fluorescent paint has a white color or a milky white color, but the light emitted by the ultraviolet light is reflected on the base (existing white display portion), so that the light emission luminance is amplified.

In order to secure daytime yellow color, a yellow pigment or yellow crushed stone (particle size: 0.5 to 2 mm) is blended.

At night, when the light source 3 is turned on and the sign 2 is irradiated with ultraviolet light, the sign 2 emits a fluorescent color, and the sign 2 can be clearly recognized from the automobile A, and the driving according to the sign 2 is encouraged. It is possible to prevent accidents from occurring.

[0020]

As described above, according to the paint of the present invention, a sign provided on a road can be illuminated by irradiation of ultraviolet rays, and the sign can be visually recognized at night.
It is possible to prevent a traffic accident at the time of rainfall at night due to overlooking the sign.

[Brief description of the drawings]

FIG. 1A is a perspective view showing an example of a display method using the paint of the present invention, and FIG.

[Explanation of symbols]

 1 road 2 sign 3 light source

Claims (1)

[Claims] 1. A road marking paint comprising an inorganic fluorescent pigment which emits fluorescent light by irradiation with ultraviolet rays, together with a hot melt resin and glass powder.