JP2012102586A - Guide block for visually-handicapped person and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide block for visually-handicapped persons and manufacturing method thereof, which has excellent visibility at an underlit place in the night without using an electric circuit, reduces strain on feet of pedestrians, and hardly causes slippage even when the surface gets wet with rain or the like.SOLUTION: A guide block comprises a surface layer which has a plurality of protrusions and is made of thermosetting resin containing dispersed aluminate light storage material having a particle diameter equal to or larger than 100 micrometer of 100 g per square meter over the entire surface thereof, and a base layer which is integrated to the surface layer and made of thermosetting resin containing dispersed white pigment. The surface layer has a hardness of JIS A 98 to 99, and the base layer has a hardness of JIS A 70 to 97.

Description

  The present invention relates to a visually impaired person guiding block and a manufacturing method thereof, and more particularly to a visually impaired person guiding block using a phosphorescent material and a manufacturing method thereof so that a visually impaired person with low vision can be identified day and night. .

Conventionally, visually-impaired person guidance blocks have been widely installed on roads, public facilities, stations, etc., and they have been created mainly in yellow color so that they can be easily identified by low-sighted and sighted people. Does not have a light emitting function. When the surroundings are bright, it can be recognized to some extent only by the difference in color, but the visibility is poor at night, especially in dark places.
Furthermore, the visually impaired person guidance block is usually painted yellow, but when this painted surface gets wet due to rain or the like, it causes a problem of slipperiness.

As a solution to these problems, a structure in which protrusions and marks including a phosphorescent material are arranged in a part of the visually impaired person guidance block has been proposed. (Patent Documents 1 and 2)
However, the light emission range is limited to the visually impaired person guidance block, and at the same time, the thickness of the layer containing the phosphorescent material is as thin as 5 to 50 microns, so that the phosphor brightness is not sufficient. Had a problem that was difficult for the visually impaired to recognize.
Usually, it is desired for a pedestrian such as a visually impaired person to have a luminance of 15 mcd / square meter or more even when 12 hours have passed since sunset.

In addition, a combination of LED and phosphorescent material has been proposed to improve nighttime visibility. (Patent Document 3)
However, since a new electric circuit is required, not only the laying cost increases, but also a problem that a failure is likely to occur.

  Furthermore, since these conventional visually-impaired person guidance blocks are made of a relatively hard and thin material, a shock-absorbing function in the visually-impaired person guidance block cannot be expected, and the effect on the pedestrian's foot is reduced. It was not something that can demonstrate.

Japanese Patent No. 4126669 JP 2006-249786 A Japanese Patent Laid-Open No. 2003-84693

  The present invention has been made in view of the circumstances as described above, and without using an electric circuit, has good visibility at night, particularly in a dark place, and eases the burden on the legs of pedestrians. Another object of the present invention is to provide a visually impaired person guidance block that is difficult to slip even when the surface is wet due to rain or the like, and a method for manufacturing the same.

  In order to achieve the above object, the visually-impaired person guidance block according to the present invention is provided with a plurality of protrusions, and the entire surface thereof is aluminate-based in a thermosetting resin and has a particle size of 100 micrometers. It is composed of a surface layer in which 100 g / m 2 or more of the above phosphorescent agent is dispersed, and a substrate layer that is integrated with the surface layer and in which a white pigment is dispersed in a thermosetting resin, and the hardness of the surface layer Is JIS A98-99, and the hardness of the substrate layer is JIS A70-97.

In order to achieve the above object, in the method for manufacturing a visually impaired person guiding block according to the present invention, 100 parts of thermosetting transparent non-yellowing urethane and aluminate-based phosphorescent agent having a particle size of 100 to 1000 microns 100-300 parts, white pigment 0.1-1 part, curing agent, reaction accelerator is uniformly stirred at 20-70 ° C., and a recess is formed on the lower surface to form a protrusion, 80-160 Pouring into a mold kept at ℃,
The material is separated into a surface layer in which an aluminate-based phosphorescent agent is present and a substrate layer in which a white pigment is present, and after the thermosetting transparent non-yellowing urethane is cured, a step of taking out the product;
And a step of heat-treating the product after removing the product.

The present invention has the following effects.
According to the block for guiding visually impaired persons of the invention according to claim 1, visibility is good at night, particularly in a dark place without using an electric circuit, and the burden on a pedestrian's foot is eased. Even when the surface is wet due to rain or the like, it is difficult to slip.
According to the visually-impaired person guidance block of the second aspect of the present invention, no peeling occurs between the substrate layer and the surface layer, so that it can be used for a long time.

According to the block for guiding visually handicapped persons according to the third aspect of the present invention, a luminance of 15 mcd / square meter or more can remain even when 12 hours have elapsed after sunset.
According to the method for manufacturing a visually-impaired person guiding block according to the fourth aspect of the present invention, no special manufacturing facility is required, so that the block can be manufactured at a low cost.

The perspective view of the block for a visually-impaired person guidance based on this invention. Sectional drawing which shows the state which poured material into the metal mold | die. Sectional drawing which shows the state which isolate | separated the material of FIG. 2 into the board | substrate layer and the surface layer.

Hereinafter, the best mode for carrying out the present invention will be described.
First, the form of this invention is demonstrated based on FIG.
The visually-impaired person guidance block according to the present invention is provided with a plurality of protrusions 11 and 100 g / m2 of a phosphorescent agent 12 having a particle size of 100 μm or more in a thermosetting resin on its entire surface. The surface layer 1 is dispersed as described above, and the substrate layer 2 is integrated with the surface layer 1 and the white pigment is dispersed in the thermosetting resin.

And the hardness of this surface layer 1 is adjusted to JIS A98-99, and the hardness of the board | substrate layer 2 is adjusted to JIS A70-97.
The hardness of the substrate layer 2 is preferably adjusted to JIS A80-95.

For this reason, the board | substrate layer 2 eases the burden on a pedestrian's leg | foot.
In addition, the surface layer 1 is a yellow-based aluminate-based phosphorescent agent, and it is not necessary to apply a slippery yellow paint for the purpose of ensuring daytime visibility. It ’s hard to slip.
In addition, the surface layer 1 contains a phosphorescent agent 12 having a ceramic hardness at a high concentration of 20% or more, so it is harder than ordinary resin alone (JIS A98-99) and can be stepped on with a foot or in contact with a white cane. In this case, the presence of the block and the pattern (linear or dotted) can be confirmed as well as the stone material product, and the durability is improved.

Moreover, the thermosetting resin of the surface layer 1 and the thermosetting resin of the substrate layer 2 are both the same thermosetting resin, and as the thermosetting resin, polyurethane resin, epoxy resin, polyester resin, An acrylic resin or the like can be used, but a polyurethane resin is preferable.
The urethane material used in the present embodiment is a cast urethane material, and a main material having a reactive group (—NCO) called a prepolymer and a curing agent (amine system) react to become polyurethane. . Among these, a transparent non-yellowing thermosetting urethane material is particularly preferable.

Further, the surface layer 1 is an aluminate-based phosphorescent agent in a thermosetting resin material and has a particle size of 100 μm or more, 1,000 to 5,000 g / square meter, preferably 1,500 to 3,000g / square meter is kneaded.
Furthermore, the thickness of the surface layer 1 is adjusted to be 1 mm or more.
For this reason, even when 12 hours have passed since sunset, a luminance of 15 mcd / square meter or more can remain.
Moreover, since the white pigment (0.1% or less) exists in the thermosetting transparent non-yellowing thermosetting urethane material, the substrate layer 2 functions as a reflection layer of the aluminate-based phosphorescent agent of the surface layer 1. Therefore, it has the effect of further increasing the phosphorescence brightness.

Next, the manufacturing method of the present invention will be described with reference to FIGS.
As shown in FIG. 2, first, 100 parts of thermosetting transparent non-yellowing urethane, 100 to 300 parts of an aluminate-based phosphorescent agent (specific gravity 3.6) having a particle size of 100 to 1000 microns, a particle size of 0.2 0.1 to 1 part of titanium oxide-based white pigment of ~ 0.3 micrometer, 30 parts of amine curing agent, 0.01 to 0.1 part of reaction accelerator is 20 to 70 ° C (preferably 50 to 60 ° C) The concave portion 31 for forming the protrusion 11 is formed on the lower surface, and the material 4 that has been uniformly stirred in is poured into the mold 3 maintained at 80 to 160 ° C. (preferably 90 to 110 ° C.).

Next, as shown in FIG. 3, when the material 4 is heated rapidly and the viscosity of the thermosetting transparent non-yellowing urethane decreases, the material 4 settles in 1 to 2 minutes and the phosphorescent agent 12 having a large specific gravity settles. Then, a surface layer 1 made of a phosphorescent agent 12 and a thermosetting transparent non-yellowing thermosetting urethane material, and a substrate layer 2 made of a thermosetting transparent non-yellowing urethane material containing almost no phosphorescent agent 12 and a white pigment. And to separate.
Further, on the surface (upper and lower sides in the figure) of the surface layer 1, the protrusion 11 is formed by the recess 31 provided in the mold 3.

Then, after the thermosetting transparent non-yellowing urethane is cured, the product is taken out.
Furthermore, after taking out the product, the product is heat-treated at 100 ° C. for 10 hours.
This ensures a sufficient physical strength of the product.

In this way, since the substrate layer 2 and the surface layer 1 are simultaneously formed of the same thermosetting transparent non-yellowing urethane material, no separation occurs between the substrate layer 2 and the surface layer 1. Can be used for a long time.
Further, since no special manufacturing equipment is required, it can be manufactured at low cost.

  The above-described invention can be used as a block for guiding a visually impaired person by installing it in a place with relatively dark lighting such as a factory, a warehouse, and an underground passage.

DESCRIPTION OF SYMBOLS 1 Surface layer 2 Substrate layer 3 Mold 4 Material 11 Projection part 12 Luminescent agent 31 Recess

Claims (4)

  A surface layer in which a plurality of protrusions (11) are provided and a phosphorescent agent (12) having a particle size of 100 microns or more dispersed in a thermosetting resin is dispersed in an amount of 100 g / square meter or more over the entire surface. 1) and a substrate layer (2) which is integrated with the surface layer (1) and in which a white pigment is dispersed in a thermosetting resin, and the hardness of the surface layer (1) is JIS A98- A visually impaired person guiding block, wherein the hardness of the substrate layer (2) is JIS A70-97.   The vision according to claim 1, wherein the thermosetting resin of the surface layer (1) and the thermosetting resin of the substrate layer (2) are both the same thermosetting transparent non-yellowing urethane material. Block for guiding people with disabilities.   The visually impaired person guiding block according to claim 1 or 2, characterized in that the thickness of the surface layer (1) is 1 mm or more. 100 parts of thermosetting transparent non-yellowing urethane, 100 to 300 parts of aluminate-based phosphorescent agent having a particle size of 100 to 1000 microns, 0.1 to 1 part of white pigment, curing agent and reaction accelerator at 20 to 70 ° C. Forming the recess (31) for forming the protrusion (11) on the lower surface, and pouring the material (4) uniformly stirred in the mold (3) maintained at 80 to 160 ° C .;
The material (4) is separated into a surface layer (1) in which an aluminate-based phosphorescent agent is present and a substrate layer (2) in which a white pigment is present, and after the thermosetting transparent non-yellowing urethane is cured, a product is obtained. A step of taking out
A method of manufacturing a visually impaired person guidance block comprising a step of heat-treating a product after removing the product.

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