JP2007112685A - Method of manufacturing luminous fluorescent material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a luminous fluorescent material by which a granular part having a fluorescent part comprising a luminous material and completely covered with a glass material is efficiently formed. <P>SOLUTION: The granular part 1 containing the fluorescent part 2 is formed by forming a mixed material of the granular luminous material 2a with the granular glass material 1a on the surface of a temporary holding member 3, peeling off the mixed material from the temporary holding member 3, firing, pulverizing and firing again. As a result, even the luminous material 2a only a part of which is covered with the glass material 1a by pulverization to break the the glass material 1a is completely covered with the glass material 1a by firing again. Then, the granular part 1 having the fluorescent part 1 comprising the luminous material 2a and completely covered with the glass material 1a is efficiently formed to easily manufacture the luminous fluorescent material exhibiting excellent luminous performance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a luminous phosphor used for, for example, a white line on a road, a guidance line in a building, or a decorative pattern.

In general, white lines on roads are formed by applying paint to the road surface, but since the paint used for this type of white line does not have luminescent properties, it reduces visibility by car drivers and pedestrians at night. It was. Therefore, a granular phosphor is formed by crushing a mixture of a granular phosphorescent material and a glass material and pulverized, and this is fixed to the surface of a road white line, road tile, etc. Is known to emit a white line or the like at night (see, for example, Patent Document 1 or 2).
Japanese Patent No. 3580652 Japanese Patent No. 3580653

  By the way, since the phosphorescent material is composed of a composition that easily undergoes hydrolysis, there is a problem that when used outdoors such as a white line on a road, hydrolysis occurs due to contact with rainwater for a long time, resulting in a decrease in luminous power. There is. Moreover, in the said prior art example, it is made to cover a phosphorescent material with the molten glass material by mixing and baking a granular phosphorescent material and a glass material, but in order to form this into a granule, it grind | pulverizes. As a result, the glass material was broken by pulverization, and many phosphors were completely covered with the glass material, such as only a part of the phosphorescent material was covered with the glass material, or the phosphorescent material was separated from the glass material. Only a small amount of the granular light-emitting body can be formed, and there is a problem in that when used outdoors as described above, the luminous power decreases due to hydrolysis.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to provide phosphorescent light emission capable of efficiently forming a granular portion in which a light emitting portion made of a phosphorescent material is completely covered with a glass material. It is in providing the manufacturing method of a body.

  In order to achieve the above object, the present invention can hold the phosphorescent material and the glass material in a method for producing a luminous phosphor by forming a light emitting portion made of a phosphorescent material inside a granular portion made of a glass material. After forming the mixed material formed by mixing the granular phosphorescent material and the granular glass material on the surface of the temporary holding member, the mixed material is peeled off from the temporary holding member and fired at a predetermined temperature. And then firing again at a predetermined temperature to form a granular portion including the light emitting portion.

  Thus, after the mixture of the phosphorescent material and the glass material is formed on the surface of the temporary holding member, the mixed material is peeled off from the temporary holding member and fired at a predetermined temperature, and pulverized to a predetermined particle size. Since the granular part including the light emitting part is formed by firing again at a predetermined temperature, even if the glass material is broken by grinding and only a part of the phosphorescent material is covered with the glass material, firing again Thus, the phosphorescent material is completely covered with the glass material.

  According to the present invention, even if the glass material is broken by pulverization and only part of the phosphorescent material is covered with the glass material, the phosphorescent material can be completely covered with the glass material by re-baking. Thus, a light-emitting part composed of a glass material can be formed efficiently, and a luminous phosphor having excellent light-emitting performance can be easily manufactured.

  1 to 7 show an embodiment of the present invention. FIG. 1 is a side sectional view in which a luminous phosphor is fixed to a white line on a road, and FIGS. 2 to 4 show a manufacturing process of the luminous phosphor. FIG. 5 and FIG. 6 are side sectional views showing the manufacturing process.

  This luminous phosphor comprises a transparent granular portion 1 and a light emitting portion 2 formed inside the granular portion 1, and is fixed to the surface of the white line B of the road A with an adhesive or the like as shown in FIG. Has been. The granular portion 1 is made of a glass material, and can transmit light from the light emitting portion 2 to the outside. The light emitting unit 2 is made of a granular phosphorescent material, and a known phosphor that absorbs external light and emits light in the dark is used as the phosphorescent material.

  Next, the manufacturing method of the said luminous luminous body is demonstrated. First, as shown in FIGS. 2 and 5 (a), a temporary holding member 3 (for example, cardboard) having a water-soluble surface layer 3a (for example, dextrin) formed on one surface is prepared. As shown in (b), a mixture 4 of a granular phosphorescent material 2a (for example, having a particle size of about 25 μ) and a granular glass material 1a (for example, a glass frit having a particle size of 6 μ to 8 μ) on the temporary holding member 3. Is formed into a thin film. In this case, the mixing material 4 is generated in advance by mixing the phosphorescent material 2a and the glass material 1a with a mixing liquid (for example, squeegee oil) at a predetermined mixing ratio (for example, 60% to 80%), and mixed by, for example, screen printing. The mixed material 4 is formed on the temporary holding member 3 by applying the material 4 to the surface of the temporary holding member 3. Next, the temporary holding member 3 holding the mixed material 4 is immersed in water to melt the surface layer 3a, and the mixed material 4 is peeled from the temporary holding member 3 as shown in FIG. 4 and FIG. In this case, the phosphorescent material 2a is not hydrolyzed by contact with water as long as the mixed material 4 is peeled off from the temporary holding member 3.

  Thereafter, as shown in FIG. 5 (d), the mixed material 4 is placed on a baking shelf 5 (for example, a mullite-based fired product) and fired at a predetermined temperature (about 800 ° C.). As shown to a), the plate-like glass 1b containing the particle | grains of many phosphorescent materials 2a is formed. Then, the plate-like glass 1b is pulverized with a pulverizer until it has a predetermined particle size (for example, 30 μm), thereby forming the phosphorescent material 2a and the glass material 1a as shown in FIG. 6 (b). In this case, since the glass material 1a is finely broken by pulverization, the phosphorescent material 2a is not only completely covered with the glass material 1a, but also only a part of the luminous material 2a is covered with the glass material 1a, or What separated the phosphorescent material 2a and the glass material 1a is also formed.

  Next, as shown in FIG. 6 (c), the particles of the phosphorescent material 2a and the glass material 1a are accommodated in a firing container 6 (for example, a mullite-based fired product) and fired again at a predetermined temperature (about 800 ° C.). As a result, a large number of granular portions 1 including the light emitting portions 2 are formed as shown in FIG. At that time, in the case where only a part of the phosphorescent material 2a is covered with the glass material 1a, the glass material 1a is melted and the phosphorescent material 2a is completely covered with the glass material 1a. If the firing temperature or firing time is set so that the granular parts 1 are not welded to each other, the granular parts 1 can be kept separated from each other even after the second firing. Moreover, since what separated the phosphorescent material 2a and the glass material 1a is smaller than the granular part 1, it should just sort with the granular part 1 through a sieve. In this case, the phosphorescent material 2a and the glass material 1a other than the granular part 1 can be reused.

  Thus, according to this embodiment, after forming the mixed material 4 of the granular luminous material 2a and the granular glass material 1a on the surface of the temporary holding member 3, the mixed material 4 is peeled from the temporary holding member 3. Since the granular part 1 including the light emitting part 2 is formed by firing and pulverizing it again, the glass material 1a is broken by the grinding and only a part of the phosphorescent material 2a is glass material 1a. Even if it is not covered with, the phosphorescent material 2a can be completely covered with the glass material 1a by firing again. Thereby, the light emission part 1 which consists of the luminous material 2a can form efficiently the granular part 1 completely covered with the glass material 1a, and the luminous luminous body excellent in luminous performance can be manufactured easily. .

  Moreover, since the mixed material 4 was produced | generated by mixing the liquid for mixing with the phosphorescent material 2a and the glass material 1a, it is easy to form the mixed material 4 in a thin film shape on the surface of the temporary holding member 3 by, for example, screen printing. can do. In this case, hydrolysis of the phosphorescent material 2a by the mixing liquid can be prevented by using a non-aqueous liquid such as squeegee oil as the mixing liquid.

  Further, the mixed material 4 is formed on the surface of the temporary holding member 3 having the soluble surface layer 3a, and the mixed material 4 is peeled from the temporary holding member 3 by melting the surface layer 3a of the temporary holding member 3. Therefore, the glass material 1 a of the mixed material 4 does not remain on the surface of the temporary holding member 3, and the mixed material 4 can be reliably separated from the temporary holding member 3.

  In this case, since the water-soluble material is used for the surface layer 3a of the temporary holding member 3, and the temporary holding member 3 is immersed in water to melt the surface layer 3a, the peeling operation can be easily performed. The production efficiency can be improved.

  In addition, the material used for the temporary holding member 3 and the surface layer 3a in the said embodiment is an example, and if it is equivalent, it is possible to use another material. Moreover, as a method of forming the phosphorescent material 2a and the glass material 1a in a thin film shape on the surface of the temporary holding member 3, for example, the phosphorescent material 2a and the glass material 1a are mixed in the temporary holding member 3 whose surface is coated with an adhesive. You may sprinkle things. Furthermore, in the said embodiment, although the manufacturing method of the luminous luminous body fixed to the surface of the white line B of the road A was shown, the luminous property used for other uses, such as a guidance line in a building, and a pattern for a decoration The present invention can also be applied to the manufacture of light emitters.

Side surface sectional drawing which fixed the luminous luminous body of this invention to the white line of the road The perspective view which shows the manufacturing process of a luminous luminous body The perspective view which shows the manufacturing process of a luminous luminous body The perspective view which shows the manufacturing process of a luminous luminous body Side surface sectional view showing manufacturing process of luminous phosphor Side surface sectional view showing manufacturing process of luminous phosphor

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Granular part, 1a ... Glass material, 2 ... Light emission part, 2a ... Luminescent material, 3 ... Temporary holding member, 3a ... Surface layer, 4 ... Mixed material.

Claims (4)

In the manufacturing method of the luminous phosphor formed by forming the light emitting portion made of the phosphorescent material inside the granular portion made of the glass material,
On the surface of the temporary holding member capable of holding the phosphorescent material and the glass material, after forming a mixed material formed by mixing the granular phosphorescent material and the granular glass material,
The mixed material is peeled off from the temporary holding member and fired at a predetermined temperature, and the granular portion including the light emitting portion is formed by pulverizing to a predetermined particle size and baking again at a predetermined temperature. Method for producing a fluorescent light emitter. The method for producing a luminous phosphor according to claim 1, wherein a mixed material is generated by mixing a predetermined mixing liquid into the luminous material and the glass material. Forming the mixed material in a thin film on the surface of a temporary holding member having a soluble surface layer;
The method for producing a luminous phosphor according to claim 1 or 2, wherein the mixed material is separated from the temporary holding member by melting the surface layer of the temporary holding member. While using a water-soluble material for the surface layer of the temporary holding member,
The method for producing a luminous phosphor according to claim 3, wherein the temporary holding member having a mixed material formed on the surface is immersed in water to melt the surface layer.

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