JPH09305137A - Road surface indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel road surface indicator which is effective and offers extremely high visibility when the device is used for a road surface indicator, instruction, etc., in order to safeguard vehicle drivers and pedestrians. SOLUTION: This device is provided with an indication plate 2 made of a transparent resin material, such as polymethyl methacrylate, polycarbonate or polystyrene under specific restriction conditions, dispersed with fluorescent dyestuff 1, such as fluorescent dyes or fluorescent pigments, in such a manner that a road surface may be equipped with this plate in the state of directing a rim surface 3 of part thereof opposite to a course. The rear surface of this indication plate 2 is provided with an irradiation lamp 4, such as UV lamp, in the state of irradiating the indication plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road marking device which is installed and used at a central portion of an intersection, a center line, a separation zone, or the like.

[0002]

2. Description of the Related Art Conventionally, a sign (hereinafter referred to as a first conventional example) in which a sign having no fluorescence is made visible at night by an illumination lamp that is not an ultraviolet lamp, and a sign having a retroreflective property are provided. Labels (hereinafter, referred to as the second conventional example) having the same and labels having a labeling portion having fluorescence (hereinafter referred to as the third conventional example) are often seen.

[0003]

In the above-mentioned first conventional example, the illumination lamp is mainly useful only after it becomes dark, and in the second and third conventional examples, the amount of light entering from the outside has decreased. At times, its function deteriorates. The present invention is a road marking for protecting the safety of vehicle drivers and pedestrians,
It is an object of the present invention to provide a new road marking device which is effective for use in instructions and has a very high visibility.

[0004]

To achieve the above object, a road marking device according to the present invention comprises a polymethylmethacrylate in which a fluorescent dye 1 such as a fluorescent dye or a fluorescent pigment is dispersed,
A marking plate 2 made of a transparent resin material such as polycarbonate or polystyrene under a specific restriction condition is provided so that it can be mounted on the road surface with a part of the edge surface 3 facing the opposite direction and the back surface of the marking plate 2. Further, an irradiation lamp 4 such as an ultraviolet lamp is provided in a state in which the sign board 2 is irradiated.

[0005]

EXAMPLE The example shown in the figure is an orange-based fluorescent dye 1.
A rectangular marking plate 2 having an edge surface 3 on the entire circumference as an inclined surface is made of a polymethylmethacrylate resin material in which is dispersed, and a lamp box 5 is provided on the back surface of the marking plate 2 and the lamp box 5 is provided in the box 5. The ultraviolet lamp 4 is built in, and is used by being buried in a central portion of the intersection as shown in the figure so as not to hinder the running of the vehicle. Reference numeral 6 in the figure indicates a power supply line.

The present invention is directed to a special fluorescent dye [Fluoresce-nce Orange 240, Re
d 300, Yellow 083, VLHighly Pure (Violet 570), Red
339, Violet 654] is mainly used as a fluorescent dye, and a polycarbonate or a transparent resin such as polystyrene under specific constraint conditions may be used in place of the polymethylmethaacrylate resin. is there.
That is, the battery is charged by the solar cell and the lamp is powered from this battery. The surface (upper surface) 7 of the sign board 2 and the unnecessary edge surface that does not require light emission are provided with a light-reflective tape, a light-reflecting paint, or a light-shielding means by printing so that the necessary edge surface that is not shielded is better illuminated. Do not tilt the edge surface. Let the lamp be an ordinary lighting lamp. Make the lamp blink.

[0007]

FUNCTION As an important function required for road marking, visibility at night, dusk, rainy weather, fog and early morning is required. In order to further improve this visibility, the fluorescent dye-containing transparent resin in the present invention is that the fluorescent dye absorbs light in a wide wavelength range and converts these lights into wavelengths peculiar to the material. It fluoresces twice with and the irradiation lamp such as an ultraviolet lamp enhances the above fluorescence emission.

The visibility of the first to third conventional examples and the examples of the present invention are shown in Table 1 below.

[0009]

[Table 1]

[0010]

The road marking device according to the present invention includes a marking plate 2 made of a transparent resin material such as polymethylmethacrylate, polycarbonate or polystyrene under a specific constraint condition in which a fluorescent dye 1 such as a fluorescent dye or fluorescent pigment is dispersed. Is provided so that a part of the edge surface 3 faces the opposite direction to the road surface, and an irradiation lamp 4 such as an ultraviolet lamp is provided on the back surface of the sign plate 2 so as to irradiate the sign plate 2. Since it is characterized by the fact that the visibility in the early morning, morning, dusk, night (with streetlight), rainy weather and fog is made by incident light and reflected light, the fluorescent function and the ultraviolet lamp by wavelength conversion over 2 degrees. The fluorescent light emission enhancing function of the iso-ultraviolet irradiation device is combined with the enhancement of the fluorescent light emission as is clear from the comparison shown in Table 1 above, and a road marking device having excellent visibility is provided. It is intended to achieve the remarkable effect that fully achieves the intended purpose of is extremely effective in ensuring the safety of driving.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a road marking device according to the present invention.

FIG. 2 is an enlarged sectional view taken along the line AA-A of FIG.

[Explanation of symbols]

 1 Fluorescent dye 2 Marking plate 3 Edge surface 4 Irradiation lamp 5 Lamp box 6 Power line 7 Surface

Claims (1)

[Claims] 1. A signboard 2 made of a transparent resin material such as polymethylmethacrylate, polycarbonate or polystyrene under specific constraint conditions in which a fluorescent dye 1 such as a fluorescent dye or fluorescent pigment is dispersed. A road surface marking which is provided so that it can be mounted on a road surface in a state facing the opposite direction, and an irradiation lamp 4 such as an ultraviolet lamp is provided on the back surface of the sign board 2 in a state of irradiating the same. apparatus.