JP2002366065A - Guide plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a guide plate which is applied on stairs or the like the plate and can be extremely clearly recognized not only in daytime but at night to thereby surely and safely guide people. SOLUTION: A white base layer 2 containing a white pigment is laminated by silkscreen printing on the surface of an aluminum plate 1. A fluorescent luminous ink layer 3 is laminated by silkscreen printing on the surface of the base layer 2. A transparent coating layer made of a resin containing an inorganic filler is laminated by silkscreen printing on the surface of the fluorescent light-accumulating ink layer 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide plate installed on the ground for guiding a pedestrian or the like.

[0002]

2. Description of the Related Art In general, as a person becomes older, their vision deteriorates, and when walking indoors or outdoors, they may be injured by stepping off a small step or the like. In addition, even a healthy person cannot clearly recognize the surrounding environment at dusk or at night, and may be injured by stumbling if there is a step on the sidewalk.

Conventionally, in order to prevent such accidents, a plate (hereinafter, referred to as an “abrasive plate”) in which artificial abrasive grains or the like are uniformly adhered to a base material such as an aluminum plate is installed. A yellow braille guide plate is laid on the ground so that stairs, steps and the like can be clearly recognized.

[0004]

However, the above-mentioned abrasive plate can be recognized clearly in bright daylight hours or in bright places illuminated, but clearly at night or in dimly lit places. I was unable to guide safely. Also, in the case of Braille induction plate,
Since the coloring material was a common ordinary yellow color, it could not be clearly recognized from dusk to night and could not be safely guided.

[0005] The present invention solves the above problems, and provides a guide plate that can clearly recognize not only during the day, but also at night or in a dark place, and can guide a pedestrian safely. The purpose is to do.

[0006]

Means for Solving the Problems The present inventor has studied diligently to achieve the above object, and the plate coated with the fluorescent luminous ink shines in a fluorescent color during the day, and can be recognized clearly. At night, we focused on the fact that it can be clearly recognized by the light of the phosphorescent light. Further, the present inventors have made further intensive studies and found a means capable of clearly recognizing light emission, thereby completing the present invention.

That is, the guide plate according to the present invention comprises:
A substrate, a substantially white underlayer laminated on the substrate, a fluorescent luminous ink layer laminated on the underlayer, and a coating layer containing an inorganic filler laminated on the fluorescent luminous ink layer It is characterized by having.

In the guide plate according to the present invention, the fluorescent luminous ink layer develops a fluorescent color in the daytime and a luminous color in the nighttime, and is recognized very clearly from the surroundings. Since the underlayer is substantially white, the color of the fluorescent luminous ink layer is made more effective. The coating layer has a high surface hardness due to the inorganic filler, and protects the fluorescent luminous ink layer from external pressure.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The guide plate of the present invention comprises a substrate,
The base layer, the fluorescent luminous ink layer and the coating layer are laminated, and if these layers are provided, other layers may be laminated if necessary.

When the base material is laid on a road surface or the like, it is attached in close contact with the road surface or the like, and various materials such as a metal plate, a resin sheet, and a synthetic rubber sheet can be used.

The underlayer is laminated on a substrate and has a substantially white color. This underlayer is for improving the color development of the fluorescent luminous ink layer, and for that purpose, it is configured to be substantially white. The color of the underlayer does not need to be pure white,
A yellow color, a red color, a blue color, or the like may be mixed according to the color of the fluorescent light storage ink layer.

As the resin used for the underlayer, a polyester resin, an acrylic vinyl resin, a urethane resin, an epoxy resin, or the like can be used. If the same resin as the resin used for the fluorescent light storage ink layer is used, It is preferable because the adhesiveness is improved. In particular, it is more preferable to use a polyester-based resin for both, since the adhesion is extremely improved.

The underlayer can be made substantially white by incorporating a white inorganic pigment. Examples of the white inorganic pigment include, but are not limited to, titanium oxide, lead white, zinc white, alumina, silica, mica titanium, magnesium carbonate, titanium strontium white, and the like.

The content of the white inorganic pigment is 5 to 40% by mass.
Is preferable, and 10 to 30% by mass is more preferable. When the content is less than 5% by mass, white light is weakened by transmitting light, and the color development of the fluorescent light storage ink layer cannot be sufficiently improved. On the other hand, if it exceeds 40% by mass, it is difficult to uniformly disperse it, and the cost is increased, but the effect cannot be obtained.

The fluorescent luminous ink layer emits light by a fluorescent phenomenon and a luminous phenomenon when a fluorescent dye and a luminous pigment are mixed in a binder resin, and the fluorescent dye, luminous pigment and the binder resin to be used are not particularly limited. Hereinafter, preferred examples will be described.

As the phosphorescent pigment, SrAl ₂ O ₄ : E
Sr ₄ Al ₁₄ O ₂₅ , a green luminous pigment that emits green light with a peak wavelength of 520 nm as a center by components such as u and Dy:
A blue-green phosphorescent pigment that emits blue light with a peak wavelength of 490 nm at the center, such as Eu and Dy, can be used. These phosphorescent pigments have substantially the same components as bases, but have different emission colors and brightness due to differences in the blending ratio of the main components, slight differences in the blending of activators, differences in firing temperatures, and the like. is there. These phosphorescent pigments have high luminance and extremely excellent durability such as heat resistance and weather resistance.

Specific examples of such luminous pigments include N luminous luminova as green luminous pigments and NP-2820 as blue luminous pigments.

As the fluorescent dye, a coumarin or perylene yellow fluorescent dye, a coumarin or perylene orange fluorescent dye, a coumarin or perylene red fluorescent dye, or the like can be used. That is, fluorescent dyes such as general reddish rhodamine and yellowish flavin have poor weather resistance, whereas coumarin and perylene fluorescent dyes have chemical structures of coumarin and perylene and have weather resistance ( In particular, for light) is very good.

Specific examples of coumarin-based and perylene-based fluorescent dyes include Lumorgen Red R-300 as a red fluorescent dye, Lumorgen Orange O-240 as an orange fluorescent dye, and Lumorgen Yellow as a yellow fluorescent dye. Y-083.

Examples of the binder resin include polyester resins, urethane resins, silicone resins, epoxy resins,
Acrylic vinyl chloride resin or the like can be used. Among them, polyester resins are preferable because of good emission of the fluorescent dye. As the solvent, an aromatic ketone type, a cellosolve type or the like can be used.

The fluorescent luminous ink layer is composed of the luminous pigment, fluorescent dye and binder resin as described above.
The mixing ratio of the binder is 10 to 40 parts by weight, the phosphorescent pigment is 40 to 90 parts by weight, and the fluorescent dye is 0.002 to
0.5 parts by weight, and the binder is 20 parts by weight.
More preferably, the amount of the phosphorescent pigment is 50 to 80 parts by weight, and the amount of the fluorescent dye is 0.006 to 0.1 parts by weight. When the amount of the luminous pigment is less than 40 parts by weight, sufficient brightness cannot be obtained, and when it exceeds 90 parts by weight, it is difficult to uniformly disperse and mix. Further, when the amount of the fluorescent dye is less than 0.002 parts by weight, it is difficult to exhibit a desired color due to poor color development at daytime,
If the amount exceeds 0.5 parts by weight, the phosphorescent ink layer, whose phosphorescent luminance may be reduced, has a thickness of preferably 50 to 200 μm, more preferably 80 to 150 μm.

The coating layer is for protecting the fluorescent luminous ink layer and contains an inorganic filler to increase abrasion resistance, hardness and the like. The hardness of the coating layer is preferably 6 or more, more preferably 7 or more, and most preferably 9 or more in pencil hardness (JIS K-5400). If the pencil hardness is less than 6, the hardness of quartz contained in sand or dust is close to 6, and the induction plate may be damaged.

Also, the wear resistance of the coating layer (JIS)
K-5665) is preferably 50 mg or less, more preferably 30 mg or less, and most preferably 20 mg or less. If the abrasion loss exceeds 50 mg, the coating layer will be worn out in a short period of time, causing a problem in terms of service life. As inorganic fillers,
There is no particular limitation, and silane, alumina, aluminum borate and the like can be used, but alumina is preferred in terms of cost and the like.

The content of the inorganic filler contained in the coating layer is suitably from 5 to 50% by mass, preferably from 1 to 50% by mass.
It is 0 to 40% by mass, more preferably 15 to 30% by mass. If the content is less than 5% by mass, sufficient hardness and abrasion resistance cannot be obtained, and there is a possibility that the fluorescent luminous ink layer may be damaged. On the other hand, when the content exceeds 50% by mass, the resin is destroyed by the inorganic filler itself, and furthermore, the transparency is reduced and the coloring of the fluorescent light is reduced.

The thickness of the coating layer is 50 to 200 μm.
m is preferable, and 75 to 150 μm is more preferable. If the thickness is less than 50 μm, the fluorescent luminous ink layer may be damaged due to abrasion or the like. If it exceeds 200 μm,
Transparency is small and the color of the fluorescent light is reduced.

The resin used for the coating layer is not particularly limited as long as it has a high hardness when solidified and a high transparency. For example, a silicone resin, a polyester resin, a urethane resin, an acrylic resin, a polyamide resin, and a vinyl acetate resin can be used.

When a coating layer is formed using a thermosetting resin such as a urethane resin or a silicone resin, the thermosetting resin is dissolved in a solvent to prepare a thermosetting resin solution. Is applied and cured by evaporating a solvent (hereinafter referred to as a solvent method), and a method of applying a thermosetting resin and then applying energy such as ultraviolet rays or an electron beam (hereinafter referred to as an energy method). ).

However, it was found that the fluorescent phosphorescent ink layer turned yellow when irradiated with ultraviolet rays by the energy method.
This is considered to be because strong energy such as ultraviolet light rapidly changes the quality of the fluorescent dye.

On the other hand, since the solvent method does not give strong energy, it is considered that the fluorescent luminous ink layer does not turn yellow. However, it has been found that even in the case of the solvent method, the fluorescent phosphorescent ink layer sometimes turns yellow. As a result of intensive studies on the yellowing, it was found that the yellowing was caused by the residual solvent contained in the coating layer. In other words, when the concentration of the residual solvent in the coating layer is high, when placed under sunlight, the fluorescent phosphorescent ink layer yellows even with its weak ultraviolet light, but does not yellow when the concentration of the residual solvent is small. Was something.

Therefore, in order to manufacture the guide plate of the present invention, when forming the coating layer on the fluorescent luminous ink layer, it is preferable to completely evaporate the solvent after laminating the coating layer on the fluorescent luminous ink layer, For example, in a light-shielded state (at least a state in which the irradiation amount of ultraviolet rays is small), 4
It is preferable to blow hot air of 0 ° C. for 15 hours or more to forcibly dry. In this way, by removing the solvent as much as possible before shipping as a product (that is, before being irradiated with ultraviolet rays), yellowing is suppressed even when used outdoors. be able to.

As the solvent, hydrocarbons, halogen hydrocarbons, ketones / aldehydes, esters and the like can be mainly used.

The guide plate according to the present invention may be laid on both side ends of the stairs, installed on a Braille induction plate, or installed at a step.

An embodiment of the guide plate according to the present invention will be described with reference to the drawings.

FIG. 1 is a partial sectional view of the guide plate, and FIG. 2 is a plan view of the guide plate.

In FIG. 1, reference numeral 1 denotes an aluminum plate as a base material. A white base layer 2 is laminated on the surface of the aluminum plate 1 by a silk screen, and a fluorescent luminous ink layer 3 is formed on the surface of the base layer 2 by a silk screen. Laminated by screen. Then, a transparent coating layer is laminated on the surface of the fluorescent luminous ink layer 3 by silk screen.

[0036]

[Example 1] <Substrate> An aluminum plate having a thickness of 0.5 mm was used. <Underlayer> A polyester resin film layer containing titanium oxide having a thickness of 50 μm. The content of titanium oxide is 2
0% by mass. Ketones and esters were used as solvents. <Fluorescent luminous ink layer> Polyester resin 30 parts by weight Green luminous pigment: LL G-300M (Nemoto Specialty Chemical Co., Ltd.) 50 parts by weight Blue-green luminous pigment: P-282011 (Nichia Corporation) 20 parts by weight Perylene-based Yellow fluorescent dye: Lumorgen Y-083 (BASF) 0.1 part by weight Fatty acid amide-based dispersant 3 parts by weight Ester was used as the solvent. The thickness is 1
It was set to 00 μm. <Coating layer> A two-component urethane resin layer containing 20% by mass of alumina having a thickness of 100 μm. Ketones and esters were used as solvents.

<Manufacture> An underlayer was laminated on an aluminum plate by silk screen printing, and the resultant was placed in a blow dryer at 50 ° C. for 1 hour to remove the solvent. Next, the fluorescent luminous ink layer was laminated by silk screen printing, and was similarly placed in a blow dryer at 50 ° C. for 1 hour to remove the solvent. Furthermore, the coating layer is laminated on the fluorescent phosphorescent layer by silk screen printing,
It was set in a blow dryer at 40 ° C. for 15 hours.

<Hardness test> Test method: JIS K-5400 Pencil scratch test was used.

The pencils used were those specified in JIS-S6006. Test result: Pencil hardness 7

<Abrasion resistance test> Test method: JIS K-5665 three types. Test result: Abrasion loss 30mg

<Adhesion Test> Test Method: A grid test was performed at 1 mm intervals according to JIS K-5400. Test result: 10

<Weather resistance test> Test method: Exposure to a fade meter for 300 hours in accordance with JIS Z-9107, measurement of daytime chromaticity before and after exposure and JIS Z-9107 7.11
The phosphorescence luminance was measured according to the following. Test results: shown in Table 1.

[0043]

[Table 1] From the above results, it was confirmed that the chromaticity after exposure hardly changed from the chromaticity before exposure, and the luminance after exposure hardly changed from the luminance before exposure.

Example 2 <Substrate> An aluminum plate having a thickness of 0.5 mm was used. <Underlayer> A polyester resin film layer containing titanium oxide having a thickness of 50 μm. The content of titanium oxide is 2
0% by mass. Ketones and esters were used as solvents. <Fluorescent luminous ink layer> Polyester resin 30 parts by weight Green luminous pigment: LL G-300M (Nemoto Specialty Chemicals) 50 parts by weight Blue-green luminous pigment: P-282011 (Nichia Corporation) 20 parts by weight Perylene-based Yellow fluorescent dye: Lumorgen Y-083 (BASF) 0.1 part by weight Fatty acid amide-based dispersant 3 parts by weight Ketone-based and ester-based solvents were used. The thickness was set to 100 μm. <Coating layer> A two-component urethane resin layer containing 20% by mass of alumina having a thickness of 100 μm. The solvent used was a ketone-based or ester-based solvent.

<Manufacture> An underlayer was laminated on an aluminum plate by silk screen printing, and placed in a blow dryer at 50 ° C. for 1 hour to remove the solvent. Next, the fluorescent luminous ink layer was laminated by silk screen printing, and was similarly set in a blow dryer at 50 ° C. for 1 hour. Further, a coating layer is laminated on the fluorescent phosphorescent layer by silk screen printing, and the wavelength is 360 nm.
Curing was performed by irradiating near ultraviolet rays having peaks before and after the irradiation for 30 seconds.

<Hardness test> Test method: Same as in Example 1. Test result: Pencil hardness 8

<Abrasion resistance test> Test method: Same as in Example 1. Test result: 25mg weight loss

<Adhesion test> Test method: Same as in Example 1. Test result: 10

<Weather resistance test> Test method: Same as in Example 1. Test results: shown in Table 2.

[0050]

[Table 2] From the above results, the chromaticity after exposure was slightly changed as compared with the chromaticity before exposure. That is, the first embodiment is different from the second embodiment.
The change in chromaticity after exposure was smaller, and the weather resistance was better. In addition, it was confirmed that the luminance after exposure hardly changed from the luminance before exposure.

[Example 3] The substrate, underlayer, fluorescent luminous ink layer and coating layer were the same as in Example 1.

<Manufacture> An underlayer was laminated on an aluminum plate by silk screen printing, and placed in a blow dryer at 50 ° C. for 1 hour to remove the solvent. Next, the fluorescent luminous ink layer was laminated by silk screen printing, and was similarly placed in a blow dryer at 50 ° C. for 1 hour to remove the solvent. Further, a coating layer is laminated on the fluorescent phosphorescent layer by silk screen printing,
It was placed in a blow dryer at 0 ° C. for 20 hours to remove the solvent almost completely.

[Example 4] The base material, the underlayer, the fluorescent luminous ink layer and the coating layer were the same as in Example 1. <Production> The same procedure as in Example 3 was carried out except that the drying of the coating layer was performed by a blow dryer at 50 ° C. for 1 hour. <Hardness test> Test method: Same as in Example 1. Test result: Pencil hardness 7 in both Examples 3 and 4 <Abrasion resistance test> Test method: Same as in Example 1. Test result: In Examples 3 and 4, the loss on abrasion was 30 m.
g <Adhesion test> Test method: Same as in Example 1. Test result: 10 for both Example 3 and Example 4 <Weather resistance test> Test method: Same as Example 1. Test results: Table 3 shows the results of Example 3 and Table 4 shows the results of Example 4.

[0054]

[Table 3]

[0055]

[Table 4] From the above results, it was confirmed that both Examples 3 and 4 had good hardness, abrasion resistance and adhesion. In Example 3, the chromaticity and luminance were good after exposure, but in Example 4, the chromaticity after exposure changed. Thus, it was confirmed that it is preferable that the amount of the residual solvent in the solvent is small because the chromaticity does not change.

Example 5 <Substrate> An aluminum plate having a thickness of 0.5 mm was used. <Underlayer> A polyester resin film layer containing titanium oxide having a thickness of 50 μm. The content of titanium oxide is 2
0% by mass. Ketones and esters were used as solvents. <Fluorescent luminous ink layer> Polyester resin 30 parts by weight Green luminous pigment: LL G-300M (Nemoto Specialty Chemical Co., Ltd.) 50 parts by weight Blue-green luminous pigment: P-282011 (Nichia Corporation) 20 parts by weight Perylene-based Yellow fluorescent dye: Lumorgen Y-083 (BASF) 0.1 part by weight Fatty acid amide-based dispersant 3 parts by weight Ketone-based and ester-based solvents were used. The thickness was set to 100 μm. <Coating layer> A two-component urethane resin layer containing 20% by mass of alumina having a thickness of 100 μm. Ketones and esters were used as solvents.

Example 6 The same as Example 5 except that the content of alumina in the coating layer was 10% by mass.

Comparative Example 1 The same as Example 5 except that the coating layer did not contain alumina.

<Manufacture> Example 5, Example 6, and Comparative Example 1
Both were produced by the method described below. An underlayer was laminated on an aluminum plate by silk screen printing, and the substrate was placed in a blow dryer at 50 ° C. for 1 hour to remove the solvent. Next, a fluorescent phosphorescent ink layer is laminated by silk screen printing, and
After being placed in a blow dryer at 0 ° C. for 1 hour, it was naturally dried for 24 hours. Further, a coating layer is laminated on the fluorescent luminous layer by silk screen printing, and the coated
Set up for hours.

<Hardness test> Test method: Same as in Example 1. Table 5 shows the results.

[0061]

[Table 5] From the above results, when alumina is contained at 10% by mass,
It was confirmed that a hardness of 6 could be secured.

<Abrasion resistance test> Test method: Same as in Example 1. Table 6 shows the results.

[0063]

[Table 6] From the above results, when alumina is contained at 10% by mass,
It was confirmed that abrasion resistance can be reduced within 50 mg.

[0064]

According to the present invention having the above-described structure, it is possible to recognize a person very clearly not only during the daytime but also at night, and it is possible to reliably guide a person safely.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a layer structure of an induction plate according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Underlayer 3 ... Fluorescent luminous ink layer 4 ... Coating layer

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 2D064 AA06 BA01 CA01 CA03 CA05 DA06 EB31 JA01 4F100 AA00D AA00H AA19D AA19H AB10A AK01D AK41B AK51D AR00B AR00C AT00A BA04 BA07 BA10A BA10D CA23D J12B09 J09B09 J09B10 CA03 CC37 CE12 CE28 EA03 FA03 FA07

Claims (8)

[Claims] 1. A base material, a substantially white base layer laminated on the base material, a phosphorescent ink layer laminated on the base layer, and an inorganic filler laminated on the fluorescent phosphorescent ink layer An induction plate comprising: a coating layer made of a resin. 2. The induction plate according to claim 1, wherein the resin of the fluorescent phosphorescent ink layer and the resin of the base layer are the same. 3. The induction plate according to claim 2, wherein the resin of the fluorescent luminous ink layer and the base layer is a polyester resin. 4. The induction plate according to claim 3, wherein the resin of the coating layer is a urethane resin. 5. The induction plate according to claim 4, wherein the coating layer contains at least 10% by mass of an inorganic filler. 6. The induction plate according to claim 5, wherein said inorganic filler is alumina. 7. The induction plate according to claim 1, wherein the residual solvent in the coating layer is 5% by mass or less. 8. The induction plate according to claim 7, wherein the coating layer is dried at 40 ° C. or more for at least 15 hours after being laminated on the fluorescent luminous ink layer.