KR200406713Y1 - Fluorescence Staining Sheet and Braille Points Block for Blind Person - Google Patents

Abstract

The present invention relates to a fluorescent colored sheet for attaching a fluorescently colored sheet to a braille block for the visually impaired for easy recognition by the amblyopia, and a braille block for the visually impaired with the same.

The present invention, in the braille block for the visually impaired including a band-like or point-like projection on the upper surface, including a fluorescent pigment or fluorescent dye, a fluorescent resin layer for emitting light by stimulation of light; A colored transparent film layer dyed with a fluorescent dye and adhered onto the fluorescent resin layer; A white film layer including a white pigment and positioned under the fluorescent resin layer; And a fluorescent colored sheet including a white adhesive layer having an adhesive force for bonding the fluorescent resin layer and the white film layer.

According to the present invention, it is possible for the visually impaired to walk more safely, and there is an effect that the braille block for the visually impaired can be installed easily and economically.

Braille Block, Fluorescent Sheet

Description

Fluorescence staining sheet and Braille points for visually impaired attached to it {Fluorescence Staining Sheet and Braille Points Block for Blind Person}

1 is a block diagram of a fluorescent coloring sheet according to an embodiment of the present invention,

2 is an exemplary view of the shape of a braille block;

3 is an exemplary view of bonding a fluorescent coloring sheet to a braille block according to the present invention,

4 and 5 are a plan view of a braille block for the visually impaired for the special direction display according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: fluorescent coloring sheet 110: transparent layer

120: colored transparent film layer 130: transparent adhesive

140: fluorescent resin layer 142: fluorescent layer

144: pigment layer 150: white adhesive layer

160: white film layer 170: adhesive layer

180: release layer

The present invention relates to a fluorescent colored sheet and a braille block for the visually impaired, and more particularly, a fluorescent colored sheet for attaching a fluorescent colored sheet to a blind block for the visually impaired so that the amblyopia can easily recognize the same. It relates to the braille block for the visually impaired attached.

In public places such as walkways and station platforms, braille blocks for the visually impaired are installed to assist the visually impaired.

Braille blocks for the visually impaired are provided with guides with band-like protrusions arranged on the upper surface and warnings with dot-shaped protrusions arranged.The guided braille blocks with band-shaped protrusions indicate the direction of travel and point-shaped protrusions. Warning braille blocks are arranged in places that require attention, such as the front of the intersection and stairs to help the safe walk of the visually impaired.

However, the braille block for the visually impaired is induced by the visually impaired by detecting the protrusions formed on the surface by using the feet and the cane, so even the weak person who can recognize the contrast cannot be recognized by the visual. There was a problem that the braille blocks were only recognized by the feet and the cane.

In order to solve such a problem, a technique has been proposed (Japanese Patent Laid-Open No. 8-133868) that provides convenience to a weak person by baking a lead forming a fluorescent or luminous coating film on a block surface to increase visibility.

However, in the case of a braille block in which a conventional fluorescent or luminous coating film is formed, the luminescence sustainability of the fluorescent or luminous lamp rapidly decreases with time, and the fluorescent or luminous coating film is painted during the production of the braille block, and thus the braille block is already constructed. There is a problem that can not be used directly on the floor, and the braille block itself must be rebuilt.

In addition, a method of embedding a light emitting diode in a block has also been proposed (Japanese Patent Laid-Open No. 2003-3434), but in order to emit light of an LED, external power is required separately, which requires a work for installing an electric supply device. .

The present invention was devised to solve such a problem, and by attaching a fluorescent colored sheet to a braille block for the visually impaired, it is possible for a weak person who can identify the contrast to recognize a block by vision, The purpose is to maintain the fluorescence for a long time by improving the fluorescence sustaining performance.

In addition, the present invention is simply attached to the previously installed braille block for the blind, the purpose is to be able to use the already installed braille block for the blind without a separate construction.

In order to achieve this object, the present invention, including a fluorescent pigment or fluorescent dye, a fluorescent resin layer for emitting light by stimulation of light; A colored transparent film layer dyed with a fluorescent dye and adhered onto the fluorescent resin layer; A white film layer including a white pigment and positioned under the fluorescent resin layer; And it provides a fluorescent colored sheet comprising a white adhesive layer having an adhesive force for bonding the fluorescent resin layer and the white film layer.

In order to achieve another object, the present invention, in the braille block for the visually impaired including a band-like or point-like projection on the upper surface, including a fluorescent pigment or fluorescent dye, a fluorescent resin layer for emitting light by stimulation of light; A colored transparent film layer protecting the fluorescent resin layer and dyed with a fluorescent dye; A white film layer including a white pigment and positioned under the fluorescent resin layer; And it provides a braille block for the visually impaired comprising a fluorescent coloring sheet comprising a white adhesive layer for bonding the fluorescent resin layer and the white film layer.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even if displayed on different drawings.

1 is a block diagram of a fluorescent coloring sheet according to an embodiment of the present invention.

As shown in Figure 1, the fluorescent colored sheet 100 according to an embodiment of the present invention is a transparent layer 110, colored transparent film layer 120, transparent adhesive 130, fluorescent resin layer 140, white adhesive The layer 150, the white film layer 160, the pressure-sensitive adhesive layer 170, and the release layer 180 are stacked and configured.

The transparent layer 110 serves to protect the underlying layer from wounds caused by ultraviolet rays or pedestrians, bicycles, and the like, and the material is not limited as long as it can function to protect the underlying layer, but the urethane resin, acrylic resin, styrene resin, It is preferable to use any one or more of a polycarbonate resin, a fluorine resin, an amorphous polyester resin, a vinyl chloride resin, a polyolefin resin, a polyaryl resin, an epoxy resin, and a cellulose resin.

In particular, an acrylic resin, a polyarylate resin, and a fluorine resin are more preferable because a resin having a hard surface is suitable from the viewpoint of protection against ultraviolet rays and wounds.

In addition, a UV absorber and a light stabilizer may be added to protect against UV rays. As the UV absorber, a benzophenone series, a benzotriazole series, a triazine series, or the like is preferable, and a hindered amine series is preferable as the light stabilizer. .

The thickness of the transparent layer 110 is preferably about 15㎛, it can be appropriately changed depending on the resin and the environment used.

The colored transparent film layer 120 mainly serves to protect the fluorescent resin layer 140 from ultraviolet rays.

Fluorescent dyes are easily dyed to vinyl chloride resin, but have poor light resistance, and are poorly dyed to polycarbonate, polyolefin, polyester resin, and the like. Therefore, it is preferable to form colored transparent film layer 120 using acrylic resin dye-dyed fluorescent dye. desirable.

In addition, the type of fluorescent dyes is not particularly limited, but any one or more of perylene, coumarin-based, thioxanthene-based, anthraquinone-based, methine-based, benzopyran-based, thioindigo-based, azo-based, and phthalocyanine-based may be used. desirable.

Although the thickness of the colored transparent film layer 120 is not specifically limited, Since it has a relationship with the suitable light emission density area | region, about 80-120 micrometers is preferable. When the dye dye is dyed to the acrylic resin, the concentration quenching phenomenon can be suppressed, so that when the dye concentration range having a relatively good dyeing effect is selected, the light emitting effect is good in the range of 80 to 120 占 퐉 film thickness.

The fluorescent resin layer 140 is urethane resin, acrylic resin, styrene resin, polycarbonate resin, fluorine resin. Amorphous polyester resins, vinyl chloride resins, polyoletin-based resins, polyarylate resins. It is preferably made of at least one of an epoxy resin and a cellulose resin, and the thickness thereof is not particularly limited, but is preferably about 30 to 150 µm in view of weather resistance and the strength of the sheet, more preferably. About 60-120 micrometers is preferable.

The fluorescent resin layer 140 is composed of a fluorescent layer 142 and a pigment layer 144. The fluorescent layer 142 and the pigment layer 144 may be formed together on a single film. A structure in which the film to be 142 and the film to be the pigment layer 144 are laminated is also possible.

The colored transparent film layer 120 and the fluorescent resin layer 140 are bonded by an adhesive. The adhesive may be appropriately selected according to the properties of the colored transparent film layer 120 and the fluorescent resin layer 140, preferably acrylic, natural rubber, styrene butadiene, chloroprene, acrylonitrile butadiene, At least one of vinyl ether, polyurethane, vinyl acetate, polyvinyl alcohol, and epoxy resin is used.

The fluorescent dye used in the fluorescent layer 142 may be any one or more of perylene-based, coumarin-based, thioxanthene-based, anthraquinonemethine-based, benzopyran-based, thioindigo-based, azo-based, and phthalocyanine-based.

The thickness of the fluorescent layer 142 is not uniform depending on the type and dispersion concentration of the fluorescent dye or fluorescent pigment, but is preferably in the range of 30 to 150 µm.

The pigment layer 144 includes a fluorescent material, and at the same time can incorporate a general pigment to the extent that does not interfere with the fluorescent effect of the fluorescent material. As the fluorescent material, a fluorescent pigment such as the fluorescent layer 142 may be used. In this case, the ratio of the fluorescent pigment and the general pigment may not be precisely determined according to the middle class of each pigment, but the ratio of the fluorescent pigment to the general pigment in the weight ratio may be used. About 100: 5-100: 3 are preferable.

It is preferable that the thickness of the pigment layer 144 is 10 micrometers or more from a viewpoint of weather resistance, More preferably, it maintains about 20 micrometers. Alternatively, the thickness of the fluorescent resin layer 140 that combines the fluorescent layer 142 and the pigment layer 144 is preferably 50 to 150 µm, more preferably about 60 to 100 µm.

The white film layer 160 is a white resin film, preferably a urethane resin, an acrylic resin, a styrene resin, a polycarbonate resin, a fluorine resin, an amorphous polyester resin, a vinyl chloride resin, a polyolefin resin, or a polyarylate. A white pigment is mix | blended and used for any 1 or more resin of resin, epoxy resin, and cellulose resin.

Titanium dioxide may be used as the white pigment, and the thickness of the white film layer 160 is preferably about 50 to 100 μm.

The white adhesive layer 150 serves to bond the fluorescent resin layer 140 and the white film layer 160, and may be acrylic, natural rubber, styrene butadiene, chloroprene, acrylonitrile butadiene, or vinyl ethyl. Preference is given to adhesives composed of at least one of polyurethane, vinyl acetate, polyvinyl alcohol and epoxy resin adhesives.

The adhesive layer 170 is formed below the white film layer 160, and is coated on the release layer 180 with release paper. Therefore, when the adhesive layer is adhered to the visually impaired block, the release layer 180 is peeled off and adhered to the exposed adhesive layer 170.

2 is an exemplary view of the shape of a braille block.

As shown in FIG. 2, the braille block 200 for the visually impaired includes a dot-shaped protrusion 210 and a band-shaped protrusion 220 and 230 on an upper surface thereof. If the height of the projections 210, 220, 230 is less than 2mm, it is difficult for the visually impaired person to recognize when stepping on the foot, and if it exceeds 50mm, it is preferable that the height is about 2 to 50mm.

The fluorescent colored sheet 100 described above may be partially or entirely adhered to the braille block 200 for the visually impaired. The adhesive method may be adhered by a known method using any adhesive, and the fluorescent colored sheet 100 according to the present invention may be easily adhered using the above-described pressure-sensitive adhesive layer 170.

3 is an exemplary view of bonding a fluorescent coloring sheet to a braille block according to the present invention.

The blind block 200 for the visually impaired may be made of concrete, mortar, ceramic, or metal. The braille block 200 for the visually impaired may be used as it is, or may be colored by coating or mixing a colorant with the material of the block.

Each of the patterns (a), (b), and (c) shown in FIG. 3 is merely an example for evaluating recognition and fluorescence persistence for the visually impaired, which can be modified in various forms. Do.

4 and 5 are a plan view of a braille block for the visually impaired for the special direction display according to an embodiment of the present invention.

The braille block for the visually impaired shown in FIG. 4 indicates a place where only a male can enter.

In the braille block 400 for men, a row of strip-shaped protrusions 410 is formed at the center of the upper surface of the braille block. Fluorescent coloring sheets 420 are attached to the left and right sides of the strip-shaped protrusion 410, respectively. .

That is, one stripe-shaped projection 410 and two rows of fluorescent colored sheets 420 are attached, so that both the visually impaired without vision and the amblyopic-identifiable ambly-eye can recognize them.

The braille block for the visually impaired shown in FIG. 5 indicates a place where only a female can access.

The female braille block 500 has two stripe-shaped projections 510 formed on the upper surface of the braille block symmetrically from the center of the upper surface. Three rows of fluorescent colored sheets 520 are attached to each of the left and right sides of the protrusion 510.

That is, two rows of strip-shaped projections 410 and three rows of fluorescent colored sheets 520 are attached, so that the blind and visually impaired persons who have no vision at all, as well as those with low visual acuity, can be identified. To be recognized.

<Example>

This invention is demonstrated to an Example and a comparative example. Each pattern shown in FIG. 3 is evaluated using the following method.

(1) Perception of visually impaired person

A fluorescent colored sheet 100 was attached to the braille block 200 for the visually impaired in the shape of each pattern (a), pattern (b), and pattern (c) shown in FIG. Nine, second-class amblyopia (visual acuity 0.02 ~ 0.05) are monitored in eight, and the average score is calculated by the method shown in Equation 1 by scoring the following criteria.

In this way, when the degree of recognition when the fluorescent coloring sheet 100 is not attached is set to 2.0 and the rating exceeds 2.0 points, it is determined that the fluorescent coloring sheet 100 has an effect, and the highest point is 4.0 points.

The environmental illuminance at the time of evaluation was 400 lux.

It is recognized very much ... 4 points (the number of people at that time: A)

3 points (number of people at that time: B)

Level equivalent to without fluorescent colored sheet ......... 2 points (number of people at that time: C)

It is not recognized than without fluorescent coloring sheet ... 1 point (the number of people at that time: D)

(2) The fluorescent coloring sheet 100 was tested using the shunt shine weather meter which is a suga test machine according to JISZ9117.

The color was determined after 2000 hours of testing by spraying water for 12 minutes every 60 minutes while maintaining the temperature of the black panel at 63 ° C.

The determination of color is carried out as follows.

○…. … No fading or discoloration

Δ. … Fading or discoloration.

×… … Discoloration and discoloration are remarkable.

Example 1

(1) Production of Transparent Layer and Colored Transparent Film Layer

Fluorescent dye and acrylic resin are mixed with a Hensian mixer, and a pellet for a transparent colored film is prepared at 240 ° C. using a pent single screw extruder. Form.

The fluorine resin to which the ultraviolet absorber was added is spread out on the colored transparent film layer 120 using a caster, and it is made to dry by hot air at 130 degreeC for 3 minutes, and the transparent layer 110 with a dry film thickness of 15 micrometers is formed.

(2) Preparation of Fluorescent Layer

The resin composition containing the fluorescent pigment (Red F-13 from Shinrohih Co., Ltd.) was applied so as to have a dry film thickness of 60 μm, held at 70 ° C. for 3 minutes, and then hot-air dried at 140 ° C. for 7 minutes to form a fluorescent layer 142. Get a film containing).

(3) Preparation of Pigment Layer

The resin composition containing a fluorescent pigment (Red F-13, manufactured by Shinrohih Co., Ltd.) and a general pigment (perylene scarlet, Red 149, No. 71137 of Color Intex) to the extent that does not interfere with the fluorescence effect, were replaced with a fluorescent layer ( 142 is applied so that the thickness of the dry film is 20 μm, and maintained at 70 ° C. for 3 minutes, followed by hot air drying to form the fluorescent resin layer 140 including the fluorescent layer 142 and the pigment layer 144.

The transparent layer 110, the colored transparent film layer 120, the fluorescent layer 142, and the pigment layer 144 are bonded to the acrylic resin-based transparent adhesive 130.

(4) Preparation of White Adhesive Layer

The pigment layer 144 is coated with an acrylic resin-based white adhesive containing titanium dioxide so that the dry film has a thickness of 20 μm and dried at 100 ° C. for 5 minutes to form a white adhesive 150. A 70 μm white soft vinyl chloride film To form a white film layer 160.

In addition, an acrylic resin-based adhesive is applied on the release layer 180 to form 33 μm, the adhesive layer 170 is formed, and hot air dried at 100 ° C. for 5 minutes, followed by adhesion with the white soft vinyl chloride film surface described above. To produce a fluorescent colored sheet 100.

Finally, the fluorescent colored sheet 100 is attached to the braille block 200 for the blind, and the background color of the braille block 200 for the blind is used as black.

(Example 2)

It is carried out in the same manner as in (Example 1) described above, except that Lemon Yellow F-16 manufactured by Shiroi Co., Ltd. is used as a fluorescent pigment, and phthalocyanine, which is yellow, 93, is used as a general pigment.

(Example 3)

Except that the background of the visually impaired braille block 200 is grayed out, the same method as described above (Example 1) is performed.

(Example 4)

The same procedure as in (Example 2) is performed except that the background of the visually impaired braille block 200 is grayed out.

(Comparative Example 1)

Evaluate with a typical braille block 200 for the visually impaired.

(Comparative Example 2)

Except that the transparent layer 110 and the colored transparent film layer 120 in the above (Example 1) were removed, the same as the fluorescent colored sheet 100 of (Example 1), and the visibility thereof is evaluated.

Table 1 shows the effects of the above-described Example and Comparative Example for each pattern shown in FIG.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2   Visibility of the Visually Impaired Pattern (a)  3.2  3.6  2.8  3.3  2.0  2.2 Pattern (b)  3.3  3.4  3.2  3.0  2.0  2.6 Pattern (c)  3.3  3.5  3.2  3.2  2.0  2.5 Fluorescence persistence ○ ○ ○ ○ - ×

As shown in Table 1, the braille block 100 for the handicapped with the fluorescent coloring sheet 100 shows the amblyopia higher visibility than the braille block for the handicapped in each pattern (a, b, c). In addition, it can be seen that the effect is also effective in fluorescence persistence.

<Light resistance>

The fluorescent colored sheet 100 according to the preferred embodiment of the present invention has a structure in which the colored transparent film layer 120 covers the fluorescent resin layer 140 formed of the fluorescent layer 142 and the pigment layer 144, thereby coloring. The acrylic resin of the transparent film layer 120 to prevent degradation of the fluorescent resin layer 140 by ultraviolet rays.

In the initial stage of the product, good visibility can be obtained by the fluorescent dye of the colored transparent film layer 120 and the emission of the fluorescent resin layer 140, but with continued use, the fluorescent dye of the colored transparent film layer 120 deteriorates and emits light. This weakens.

The deterioration does not proceed in a short time, but it does not take long before the fluorescent dye of the colored transparent film layer 120 deteriorates and hardly emits light. However, deterioration of the function of the fluorescent resin layer 140 protected by the acrylic resin is suppressed and light emission continues.

In this manner, the lifespan of the fluorescent coloring sheet 100 is long.

Table 2 shows the results of the weather resistance test for each Example and Comparative Example.

Samples 1 and 2 except for the transparent layer 110 in the fluorescent colored sheet 100 according to the configuration of Example 1, Sample 1 was colored yellow, Sample 2 was colored orange.

Samples 3 and 4 were fluorescent colored sheets 100 according to the configuration of Example 1, and a fluorine coat was used as the transparent layer 110, sample 3 was yellow green, and sample 4 was colored orange.

Samples 5 and 6 are the same as Samples 1 and 2 except that a white PVC-based soft PVC is used instead of the colored transparent film layer 120, and Samples 7 and 8 are also soft PVCs based on the colored transparent film layer-colored transparent film layer. Same as Samples 3 and 4 except that.

The evaluation method is a sunshine weather meter, the test conditions are black panel temperature 63 ℃, irradiation energy 30W / ㎡, and after the test for 2000 hours by spraying water every 12 minutes every 60 minutes and steel Using the energy xenon weather machine, the test conditions use a method of observing after the test with a black panel temperature of 83 ° C. and irradiation energy of 162 W / m 2.

The result was measured ΔE using a color difference meter. ΔE is a value that represents the difference in color before and after the test and is used without units.

The results of the 2000 hours of the sunshine weather meter and the results of the strong energy xenon weather meter (460 MJ) are shown in Table 2, with each value representing the ΔE value.

Sample Sunshine weather meter Xenon weather meter One 10.87 12.76 2 8.69 9.65 3 12.32 11.04 4 9.77 10.11 5 65.00 72.87 6 45.36 36.88 7 70.19 68.98 8 40.32 39.19

When the ΔE value is 1 to 2, the color difference cannot be identified by the human eye, and the difference can be identified only by using a measuring device.

As shown in the results of Table 2, for samples 1 to 4, the value of ΔE is approximately 8 to 12, which is visually discernible, but relatively small compared to samples 5 to 8. It is shown that the discoloration ratio is relatively small.

These results show that the color is not easily discolored, so the weather resistance is excellent.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas falling within the scope of the present invention should be interpreted as being included in the scope of the present invention.

The present invention attaches fluorescent colored sheets to braille blocks for the visually impaired, enabling the amblyopia who can identify the light and dark to recognize the blocks by vision, and improve the fluorescence persistence of the fluorescent colored sheet for a long time. By maintaining it, the visually impaired, especially the amblyopian, can have a safer walking experience.

In addition, the present invention simply attaches to the previously installed Braille block for the blind, it is possible to use the already installed Braille block for the blind without a separate construction, or for the blind with a fluorescent coloring sheet on the flat floor By allowing the Braille block to be attached, it is possible to install the Braille block for the visually impaired more simply and economically without requiring re-installation or additional additional construction.

Claims (17)

A fluorescent resin layer including a fluorescent pigment or a fluorescent dye and emitting light by stimulation of light; A colored transparent film layer dyed with a fluorescent dye and adhered onto the fluorescent resin layer; A white film layer including a white pigment and positioned under the fluorescent resin layer; And White adhesive layer provided with an adhesive force for bonding the fluorescent resin layer and the white film layer Fluorescent coloring sheet comprising a. The method of claim 1, A transparent coloring sheet is further laminated on top of the colored transparent film layer. The method of claim 1, The fluorescent dye or the fluorescent pigment of the fluorescent resin layer is any one or more of perylene-based, coumarin-based, thioxanthene-based, anthraquinone-based, methine-based, benzopyran-based, thioindigo-based, azo-based and phthalocyanine-based Fluorescent coloring sheet made into. The method of claim 1, The fluorescent dye of the colored transparent film layer is any one or more of perylene-based, coumarin-based, thioxanthene-based, anthraquinone-based, methine-based, benzopyran-based, thioindigo-based, azo-based and phthalocyanine-based Coloring sheet. The method of claim 1, The fluorescent resin layer or the white film layer may be a urethane resin, an acrylic resin, a styrene resin, a polycarbonate resin, a fluorine resin, an amorphous polyester resin, a vinyl chloride resin, a polyolefin resin, or a polyarylate resin. Fluorescent coloring sheet formed from any one or more of an epoxy resin and a cellulose resin. The method of claim 1, The white adhesive layer or the white film layer contains titanium dioxide, characterized in that the fluorescent colored sheet. The method of claim 1, The colored transparent film layer and the fluorescent resin layer are acrylic, natural rubber, styrene butadiene, chloroprene, acrylonitrile butadiene, vinyl ether, polyurethane, vinyl acetate, polyvinyl alcohol, and epoxy resin. Fluorescent coloring sheet, characterized in that bonded to any one or more of the adhesive. The method of claim 1, The white adhesive layer is an adhesive consisting of at least one of acrylic, natural rubber, styrene butadiene, chloroprene, acrylonitrile butadiene, vinyl ethyl, polyurethane, vinyl acetate, polyvinyl alcohol and epoxy resin adhesives. It is a fluorescent coloring sheet characterized by the above-mentioned. The method of claim 1, It is formed on the lower portion of the white film layer, the fluorescent colored sheet comprising an adhesive layer having an adhesive force. The method of claim 9, The fluorescent colored sheet is formed under the pressure-sensitive adhesive layer, and comprises a release layer formed of release paper to be easily peeled off during adhesion. In the braille block for the visually impaired, including a band-like or point-shaped protrusion on the upper surface, The braze block for the visually impaired is affixed with the fluorescent coloring sheet in any one of Claims 1-10. The method of claim 11, The braille block for the visually impaired is made of concrete, mortar, ceramics, metal or synthetic resin. The method of claim 11, The band-shaped protrusion is a braille block for the visually impaired, characterized in that formed in one line at the center of the upper surface. The method of claim 11, The band-shaped protrusions are formed in one line at the center of the upper surface, and the fluorescent colored sheet is attached to each of the left and right of the band-shaped protrusions Braille block for the visually impaired. The method of claim 11, The band-shaped projection is a braille block for the blind, characterized in that two rows are formed symmetrically from the center of the upper surface. The method of claim 11, The strip-shaped projections are formed in two rows symmetrically from the center of the upper surface, the fluorescent colored sheet is characterized in that each row is formed on the left and right sides of the center between the strip-shaped projections and the outer portion of the two strip-shaped projections Braille blocks for the visually impaired. In the braille block for the visually impaired, including a band-like or point-shaped protrusion on the upper surface, The braille block for the visually impaired is a block of braille for the visually impaired, comprising a mixture of colorant, mortar, ceramic, metal, or synthetic resin.

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