JP2015158595A - Method for manufacturing luminous display board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a luminous display board, by which a display board capable of reliably displaying accurate guidance contents can be manufactured in a short time through a process of casting a luminous material solution into a recess of a luminous guide plate in such a way that, even when the luminous material solution is cast at once over the entire surface of the display board without considering projections or recesses of the board, the solution applied on the projections is automatically removed and reserved in the recesses.SOLUTION: The method for manufacturing a luminous display board includes the steps of: applying a release material that repels a luminous material solution on one surface of a metal flat plate; pressing the plate on which the release material is applied by use of a die having a predetermined pattern so as to form a solution reservoir composed of protrusions and recesses constituting the pattern and to divide the release material on a protruding part from the release material on a recessed part; removing only the release material on the recessed part of the plate where the solution reservoir is formed; and casting the luminous material solution to constitute a luminous material in the solution reservoir, to the entire surface of the plate where the release material is removed so as to allow the release material to remain only in the recessed part where the release material is removed.

Description

  The present invention relates to a method for manufacturing a luminous display panel.

As a method of manufacturing a phosphorescent display board used for the purpose of guides for disaster evacuation exits, a solution containing a phosphorescent material (hereinafter referred to as “phosphorescent material solution”) is poured into the concave portion of the tray-shaped display board body and dried. A method is known in which a luminous layer is formed, and a guide mark, which is a mark for expressing the content of guidance and the like, is formed on a part of the upper layer using an opaque sheet or the like (see, for example, Patent Document 1). .
In addition, instead of pouring the phosphorescent material solution into the concave portion formed on the entire surface of the display panel main body, it is also possible to provide an unevenness matching the pattern of the guide mark on the display plate main body and to pour the phosphorescent material solution only into the concave portion. . In this case, since the light-impermeable sheet for forming the guide mark only needs to be arranged on the convex portion, a light-accumulating layer that is covered by the light-impermeable sheet and is not used for light accumulation / light emission is generated. There is an advantage that waste of phosphorescent material can be avoided.

JP 2013-228509 A

  In the case of a method in which the display plate body is provided with irregularities that match the pattern of the guide mark and the phosphorescent material solution is poured only into the concave portion, depending on the pattern of the guide mark, the concave portion into which the phosphorescent material solution is poured is divided into a plurality of locations, There are cases where they are complicated and complicated. For example, FIG. 9 is a diagram illustrating an example of a guide mark pattern on the phosphorescent display board, in which the concave portion into which the phosphorescent material solution is to be poured is divided into a plurality of locations 0901, 0902, 0903, 0904, and 0905. An example of the pattern of the guide mark on the luminous display panel main body 0900 having the place 0905a where the pattern is complicated and complicated is shown. In such a case, it is necessary to perform the operation of pouring the phosphorescent material solution for each portion, and it is necessary to carefully perform the phosphorescent material solution so that the phosphorescent material solution does not cover the convex portions when pouring. For this reason, there exists a problem that work takes time. Moreover, if the phosphorescent material solution is accidentally applied to the convex portion, it takes time to remove the phosphorescent material solution. There is also a problem that the guide mark cannot correctly display the guidance content or the appearance is not good.

  The present invention has been made in view of the above points, and the problem to be solved is that when the phosphorescent material solution is poured into the concave portion of the luminous guide plate, the entire surface of the display plate main body is not affected by the irregularities. Even if it is poured, the phosphorescent material solution applied to the convex portion is automatically removed and accumulated in the concave portion, so that the accurate guidance content can be displayed in a short time and reliably. Is to provide.

  In order to solve the above-mentioned problems, among the present inventions, the first invention is a flat plate preparation step for preparing a metal flat plate, and a release material for disposing a release material that repels a phosphorescent material solution described later on one surface of the prepared flat plate. Forming a solution pool in which the pattern is constituted by uneven portions by pressing a flat plate on which a release material is arranged with a predetermined pattern mold, and forming a solution pool that divides the release material between the concave portion and the convex portion A first release material removing step of removing only the release material of the concave portion of the flat plate on which the solution pool is formed, and the release material of the phosphorescent material solution for constituting the phosphorescent material in the solution pool is removed. The phosphorescent material solution inflow step in which the phosphorescent material solution flows in so that the phosphorescent material solution remains only in the concave portion from which the release material has been removed by flowing over the entire surface of the flat plate, and the concave portion in which the phosphorescent material solution is dried and the phosphorescent material solution remains To make up the phosphorescent material To provide a method for manufacturing a phosphorescent display panel and a step.

  Further, the second invention is based on the first invention, the second release material removing step for removing the release material remaining on the convex portion, and the coloring of the pattern constituted by the convex portion in the pattern The colored sheet preparation step for preparing the sheet, and the solution pool is configured so that the pattern of the prepared colored sheet overlaps the convex portion from which the release material has been removed in the second release material removal step. The manufacturing method of the luminous display board further including the coloring sheet sticking process affixed on a flat plate is provided.

  The third invention includes a flat plate preparation step of preparing a metal flat plate, and a solution pool forming step of forming a solution pool in which the pattern is constituted by uneven portions by pressing the flat plate with a predetermined pattern mold, and A phosphorescent material solution inflow process for flowing a phosphorescent material solution for constituting a phosphorescent material in a solution pool over the entire surface of the flat plate, and an extra phosphorescent material solution remaining on the convex portion of the flat plate on which the concave and convex portions are formed. A method of manufacturing a phosphorescent display panel, comprising: an extra removing step of removing the flat plate by applying ultrasonic vibration; and a drying step of drying the phosphorescent material solution to form the phosphorescent material in the recess where the phosphorescent material solution remains I will provide a.

  Further, the fourth invention is based on the third invention, and the extra removing step is inclined so that a predetermined amount of the phosphorescent material solution remains in the concave portion of the flat plate in which the uneven portion is formed. The manufacturing method of the luminous display board of Claim 3 containing this is provided.

  According to the present invention, when the phosphorescent material solution is poured into the concave portion of the luminous guide plate, the phosphorescent material solution applied to the convex portion is automatically removed even if it is poured all over the entire surface of the display plate body without worrying about irregularities. By accumulating in the concave portion, it is possible to provide a method for manufacturing a phosphorescent display board capable of displaying accurate guidance contents in a short time and surely.

The figure which shows an example of the flow of the process in the manufacturing method of the luminous display board of Example 1. FIG. The figure which shows an example of the external appearance of the flat plate of the state in which the solution pool was formed by the solution pool formation process The figure which shows an example of the shape of the flat plate in Example 1. The figure for demonstrating the groove | channel provided in a flat plate The figure which shows an example of the flow of the process in the manufacturing method of the luminous display board of Example 2. FIG. The figure for demonstrating an example of the method of pressing with the pattern of a predetermined pattern The figure which shows an example of the flow of the process in the manufacturing method of the luminous display board of Example 3. FIG. The figure which shows an example of the flow of the process in the manufacturing method of the luminous display board of Example 4. The figure which shows an example of the pattern of the guide mark in a luminous display board

0200 Flat plate 0201 Recessed part (solution pool)
0202 Convex

  Examples of the present invention will be described below. The relationship between the embodiments and the claims is as follows. Example 1 mainly relates to claim 1 and the like, Example 2 mainly relates to claim 2 and the like, Example 3 mainly relates to claim 3 and the like, and Example 4 mainly relates to claim 4 and the like. In addition, this invention is not limited to these Examples at all, and can be implemented in various modes without departing from the gist thereof.

<Overview>
The manufacturing method of the luminous display panel of the present embodiment is to form a concavo-convex by pressing a metal flat plate provided with a release material that repels the phosphorescent material solution, and after removing only the release material in the recess, one side of the flat plate The phosphorescent material solution is poured into the whole so that the solution is repelled by the convex portion and accumulated in the concave portion, so that the luminous layer is formed only in the concave portion.

<Process flow>
(General)
FIG. 1 is a diagram illustrating an example of a processing flow in the method for manufacturing a luminous display board according to the present embodiment. As shown in this figure, the flow of processing in the manufacturing method of the present embodiment is as follows: flat plate preparation step S0101, release material placement step S0102, solution pool formation step S0103, first release material removal step S0104, and phosphorescent material. It includes a solution inflow step S0105 and a drying step S0106.

(Plate preparation process)
The flat plate preparation step is a step of preparing a metal flat plate. The dimensions of the flat plate are appropriately designed according to the installation purpose and installation location of the luminous display board. For example, as an evacuation guide indicating the position of an evacuation exit or the like, about 80 to 120 mm in length, about 240 to 360 mm in width, and about 0.8 to 1.2 mm in thickness, particularly about 100 mm in length and about 300 mm in width A thickness of about 1 mm is conceivable. The material of the flat plate is not particularly limited as long as it is a metal, but aluminum, copper, stainless steel, brass and the like that are easy to press and have high rigidity are suitable.

  Further, the flat plate has a surface roughness (surface roughness) that can firmly fix the phosphorescent layer (or a reflective layer when a reflective layer is formed below the phosphorescent layer as described later). It is desirable. The surface roughness is expressed, for example, by the centerline surface roughness (the value obtained by folding the roughness curve from the centerline and dividing the area obtained by the roughness curve and the centerline by the measured length). As the value of the surface roughness in the example, for example, it is considered that the center line surface roughness is about 2 to 12 microns, preferably about 3 to 10 microns, and more preferably about 4 to 8 microns. It is possible.

(Release material placement process)
A mold release material arrangement | positioning process is a process of arrange | positioning the mold release material which repels a postscript luminous material solution to the whole one surface of the prepared flat plate. The purpose of providing this step, as will be described later, is to remove the concave part release material and leave the convex part release material after the pressing process, when the phosphorescent material solution is poured over the entire surface of the flat plate, the convex part This is so that it can be repelled.

  As the mold release material, a silicon mold release material or a fluorine-coated mold release material having an excellent effect in mold release with a metal is suitable.

(Solution pool formation process)
The solution pool forming step is a step of pressing the flat plate on which the release material is arranged with a pattern of a predetermined pattern to form a solution pool in which the pattern is constituted by uneven portions and dividing the release material of the concave portion and the convex portion. It is.

  A predetermined pattern means the whole formed from the figure, pictogram, character, combination thereof, and other parts designed according to the information content to be transmitted by the luminous display board. The solution pool is a recess for collecting the entire solution including the solution repelled from the protrusion when the phosphorescent material solution is poured over the entire surface of the flat plate. As will be described later, when the phosphorescent material solution is poured into the solution pool in the phosphorescent material solution inflow step, it is conceivable to provide a saucer around the flat plate and collect the phosphorescent material solution spilled around the flat plate. In this case, in this step, in the solution pool, a portion of the entire phosphorescent solution that has been spilled is not spilled around the flat plate (the portion spilled around is reused later) Is possible).

  FIG. 2 is a diagram illustrating an example of the appearance of the flat plate 0200 in a state where a solution pool is formed by the solution pool forming step. Among these, (a) shows a state in which a concave portion (solution pool) 0201, a pictogram representing an escape port, and a convex portion 0202 forming a wall of a flat plate peripheral portion are formed.

  In addition, in the example of this figure (a), the part which represents the evacuation exit and arrow which forms a pictogram becomes a convex part, and a phosphorescent material will be arrange | positioned in the other part, On the contrary, a pictogram Concavities and convexities may be provided so that the portion where the film is formed becomes a recess. FIG. 2B shows such an example, in which the portion where the pictogram is formed is a solution pool 0201 which is a concave portion, and the other portion where no pictogram is formed is a convex portion 0202. In this case, the phosphorescent material is arranged in a part forming a pictogram.

  For example, a method as shown in FIG. 6 may be used as a method of pressing with a predetermined pattern mold. In the example of this figure, as shown in (c), a flat plate 0600 shown in (b) is placed on a lower mold 0610 provided with the same mold as a predetermined pattern in advance, and (a). As shown, an upper mold 0620 having projections and depressions corresponding to the projections and depressions of the lower mold (having projections corresponding to the depressions and depressions corresponding to the projections) is placed on the flat plate. A method of pressing the flat plate between upper and lower molds is used. Thereby, the flat plate 0630 press-processed in the same predetermined pattern as a metal mold | die as shown to (d) is obtained. If such a method is used, the main body of the luminous display board which has the same shape unevenness | corrugation using the same metal mold | die can be mass-produced. In addition, since the unevenness is formed on the flat plate, there is an effect that the rigidity can be increased as compared with the case where there is no unevenness if the plate thickness is the same. Therefore, sufficient rigidity can be maintained even when the thickness of the flat plate used for the production using the production method of the present embodiment is about 1 mm as in the above example. Furthermore, since the whole height of the luminous display board after a press process can also be made low in connection with this, there also exists an effect that a possibility that a pedestrian may trip is reduced.

  In the solution pool forming step, the release material of the concave portion and the convex portion is automatically divided at substantially the boundary between the concave portion and the convex portion. This is because the extensibility of the release material is smaller than the extensibility of the flat plate made of metal, and the extension of the release material cannot respond to the extension of the flat plate by pressing. The purpose of this division is to facilitate the removal of only the release material in the recesses in the first release material removal step, which is the next step.

(First release material removal process)
A 1st mold release material removal process is a process of removing only the mold release material of the said recessed part of the said flat plate in which the solution pool was formed. The purpose of the removal is to prevent the concave portion from repelling the solution when the phosphorescent material is poured over the entire surface of the flat plate in the next step of the phosphorescent material solution inflow step. This is because the solution is accumulated in the concave portion.

As a specific removal method, it may be removed using an alkaline detergent or the like, or may be removed using a spatula or the like. As described above, since the release material for the recesses and the projections has already been divided in the solution pool formation step, only the release material for the recesses can be easily removed regardless of which method is used.
(Phosphorescent material solution inflow process)

  In the phosphorescent material solution inflow step, the phosphorescent material solution is formed only in the concave portion from which the release material has been removed by flowing the phosphorescent material solution for constituting the phosphorescent material in the solution pool over the entire surface of the flat plate from which the release material has been removed. It is a process of flowing in so as to remain.

  At that time, it is desirable to prepare a tray for storing the phosphorescent material solution spilled around the flat plate when the phosphorescent material solution flows in, for example, by placing the flat plate in a tray that is slightly larger than this. . By doing so, the phosphorescent material solution spilled around can be collected and reused. For this reason, the phosphorescent material solution can be poured at once without worrying about spilling around the flat plate during inflow.

The phosphorescent material solution is a solution obtained by dissolving a phosphorescent material in a solvent such as phenyl silicone liquid. Suitable materials for the phosphorescent material include strontium aluminate-based phosphorescent powder. Strontium aluminate is a substance containing strontium (Sr), aluminum (Al), and oxygen (O) as main constituent elements such as SrAl ₂ O ₄ , Sr ₄ Al ₁₄ O _25, and strontium aluminate phosphorescent powder. Is obtained by adding a small amount of europium (Eu), dysprosium (Dy), boron (B) or the like using strontium aluminate salt as a mother crystal. It is known that a phosphorescent material using a strontium aluminate phosphorescent powder has higher emission luminance and longer afterglow time than conventional phosphorescent materials using zinc sulfide as a base crystal.

  As a result of processing in the steps from the mold release material arranging step to the first mold release material removing step, a concave portion (solution pool) is already formed on the flat plate at the start of this step, and the mold release material is arranged only on the convex portion. It is in the state. Therefore, when the phosphorescent material solution is poured in this step, the phosphorescent material solution applied to the convex portion is repelled by the release material and naturally flows into the pool of the concave portion. In addition, in the case where a tray is provided around the flat plate, the phosphorescent material solution applied to the convex portion and repelled by the mold release material partially flows into the solution pool in the concave portion, and part of the phosphorescent material solution is spilled out of the flat plate and stored in the tray. Will be collected. Thereby, the solution can be poured all at once without worrying about unevenness when pouring. Therefore, for example, when there are a plurality of solution pools, it is not necessary to take a complicated method of pouring the phosphorescent material solution one by one for each solution pool from the beginning. Can be manufactured.

(Drying process)
A drying process is a process of drying a phosphorescent material solution and comprising a phosphorescent material in the recessed part where the said phosphorescent material solution remained. Drying may be natural drying or may be forced to dry by applying heat.

(Other)
(Process for forming a groove for preventing the phosphorescent material from falling off)
A groove may be formed in the flat plate at a position where an inner wall of a solution pool that is a recess is formed by pressing. The purpose of forming the groove is that when the solution pool is formed, this groove comes to the position of the inner wall, so that the phosphorescent material solution poured into the solution pool enters the groove, so that the phosphorescent material falls off the display panel. It is to prevent that. The groove may be formed in a sub-process (groove forming sub-process) of the preparation process. In this case, a release material is arranged in the release material arranging process on the flat plate after the groove is formed. Will be. Alternatively, the groove may be formed in a step after the release material arranging step and before the solution pool forming step.

  FIG. 3 is a diagram showing an example of the shape of the flat plate 0300 in the present embodiment, and is an example in which the above-described groove 0303 is provided on the flat plate. The example of this figure is an example in the case where a solution pool having the shape as shown in FIG. 2 is formed in the subsequent solution pool forming step, and a groove is formed at a position that becomes the inner wall of the solution pool to be formed. This is an example. The shape of the groove is not particularly limited, and for example, a vertical cross section having a substantially square shape, a substantially inverted triangle shape, or a substantially semicircular shape can be considered. Further, for example, when the thickness of the flat plate is about 1 mm, the dimensions of the groove may be about 0.5 mm in both width and depth.

  FIG. 4 is a diagram for explaining a groove provided in a flat plate. Among these, (a) is a figure for demonstrating the relationship between the position where a groove | channel is provided, and the position where a solution pool is formed. The groove 0403 shown in this figure is an enlarged view of the range surrounded by the broken line circle 0304 in FIG. Here, a two-dot chain line 0405 drawn around the groove 0403 is an imaginary line indicating a line (a line serving as a boundary with the convex portion) forming the top of the concave portion when the flat plate is pressed. (B) is the sectional view on the AA line of (a). (C) shows a state in which the flat plate is uneven by pressing from the state of (b), and shows a state in which the groove 0403 is at the position of the inner wall 0405 of the recess formed by pressing. As shown in the figure, the portion bent by the pressing process has a slightly rounded shape. Further, since the flat plate is slightly stretched in the bent portion and the vicinity thereof, the groove also has a slightly wider opening than before the pressing process (the groove ( A state slightly wider than the state of b) is shown). As a result, the phosphorescent material solution is less likely to become lumpy and can be evenly distributed inside the groove.

  Since the position where the irregularities are formed by pressing can be determined in advance, the position where the groove is provided can be known in advance, and the groove can be arranged in such a flat state. In addition, when providing the groove, the bending position corresponding to the bending position may be appropriately designed in consideration of the degree of the possibility that the phosphorescent material may fall off, and along the peripheral edge of the flat plate as shown in this figure. Unlike the example shown in the figure, for example, grooves may be provided at positions corresponding to portions representing guide marks provided in the central portion so that grooves are disposed on all inner walls of the solution pool. It may be provided.

(Reflecting material solution inflow process)
The processing flow in the present embodiment may have a reflective material solution inflow step before the phosphorescent material solution inflow step. In the reflecting material solution inflow step, the reflecting material solution is formed only in the concave portion where the releasing material has been removed by flowing the reflecting material solution for constituting the reflecting material in the solution pool over the entire surface of the flat plate from which the releasing material has been removed. It is a process of flowing in so as to remain. The reflective material is disposed on the lower side (flat plate side) of the phosphorescent material, and plays a role of increasing the light emission luminance of the phosphorescent display plate by reflecting light emitted from the phosphorescent material toward the bottom surface of the recess. For example, titanium oxide (TiO2) powder is used as the material of the reflector. Titanium oxide is one of typical white pigments, has excellent reflection characteristics, and is most suitable as a material for the reflector.

(Process related to arrangement of colored sheets)
Further, the release material of the convex portion may be removed and a colored sheet may be disposed there, but this configuration will be described later in the next embodiment.

(Transparent protective layer placement process)
The processing flow in this embodiment may include a transparent protective layer arranging step after the drying step. The transparent protective layer is mainly for preventing damage / deterioration and contamination of the luminous display panel including the luminous layer. As the transparent protective material for forming the transparent protective layer, transparent resins such as transparent acrylic resin and transparent silicone resin, transparent glass, and the like are used.
A transparent protective layer arrangement | positioning process is a process of arrange | positioning a transparent protective layer to the upper layer of a luminous material at least, and in addition to this, you may arrange | position a transparent protective layer also to a convex part. When the transparent protective layer is disposed on the convex portion, a step of removing the release material of the convex portion may be provided and performed after the step, or on the release material without removing the release material of the convex portion. A transparent protective layer may be disposed on the substrate. In addition, when arrange | positioning a colored sheet, while arrange | positioning a transparent protective layer only to the upper layer of the phosphorescent material arrange | positioned at the recessed part, you may arrange | position a colored sheet on a convex part (in this case, which arrangement | positioning precedes). The transparent protective layer may be disposed on the entire phosphorescent display panel including the colored sheet after the colored sheet is disposed on the convex portion.

(Luminescent display panel manufactured using the manufacturing method of this example)
The luminous display board manufactured using the manufacturing method of this embodiment also belongs to the technical scope of the invention according to this embodiment. The same applies to the other embodiments.

<Effect>
According to the invention of this embodiment, when the phosphorescent material solution is poured into the concave portion of the phosphorescent guide plate, the phosphorescent material solution automatically applied to the convex portion even if it is poured all over the entire surface of the display plate body without worrying about irregularities. It is possible to provide a method for manufacturing a phosphorescent display panel that can display accurate guidance contents in a short time and surely by removing and collecting in the recess.

<Overview>
The manufacturing method of the luminous display panel of the present embodiment is basically the same as that of the first embodiment, but further includes a step of removing the release material of the convex portion and attaching a colored sheet to the convex portion.

<Process flow>
(General)
FIG. 5 is a diagram illustrating an example of a processing flow in the method for manufacturing a luminous display board according to the present embodiment. The manufacturing method of the luminous display board in a present Example is fundamentally common with the manufacturing method of the luminous display board described in Example 1. FIG. However, in addition to each process demonstrated in Example 1, the manufacturing method of a present Example has 2nd mold release material removal process S0507, colored sheet preparation process S0508, and colored sheet sticking process S0509. In addition, in the example of this figure, although the 2nd mold release material removal process is described so that it may be processed after drying process S0506, if the 2nd mold release material removal process is after a luminous material solution inflow process, it will dry. You may process before a process or simultaneously with a drying process. Similarly, the time order of the colored sheet preparation step, the colored sheet sticking step, and the drying step is not limited. Hereinafter, a 2nd mold release material removal process, a colored sheet preparation process, and a colored sheet sticking process are demonstrated one by one. Since the remaining steps are the same as those described in the first embodiment, a description thereof will be omitted.

(Second release material removal process)
A 2nd mold release material removal process is a process of removing the mold release material which remained in the said convex part. In order to make it easy to attach the colored sheet in the colored sheet attaching step described later, this is performed as a preparation step. A specific method for removing the release material may be the same as the removal method in the first release material removal step described above.

(Coloring sheet preparation process)
The colored sheet preparation step is a step of preparing a colored sheet having a pattern constituted by convex portions in the pattern. The colored sheet is a colored opaque sheet-like or film-like member.

  There is no particular limitation on the material of the colored sheet, and resins such as acrylic, vinyl, cloth, paper, and the like can be used.

  There is no particular limitation on the coloring (color) of the coloring sheet, but in order to increase the visibility of the phosphorescent display board during the daytime, it is a dark color with a clear contrast with the body color of the phosphorescent material (usually light yellow) For example, green (including deep green) can be considered. In addition, if the luminous display board according to the present invention is a guide sign (a sign indicating that it is an evacuation exit or the direction of evacuation) under the Fire Service Act, the laws and regulations as of the time of filing (“Standards for guide lights and guide signs” According to the Fire and Disaster Management Agency Notification No. 2 (March 17, 1999), it is stipulated that the color of the display surface (part of the ground) of the guidance sign must be green (Same as No. 6.3 of the Notification) (See (3)), the convex part corresponding to the ground part must be green. For this reason, the coloring sheet | seat provided in the luminous display board of this invention which is a guidance label | marker under the present law becomes green.

  Moreover, the shape of the coloring sheet is formed in the same shape as the pattern constituted by the convex portions in advance. Thereby, it is not necessary to process the shape of the colored sheet by cutting or the like in accordance with the pattern of the convex portion at the work site, and this can contribute to the manufacture of the luminous display board in a simple work.

  In addition, this process should just be before the next coloring sheet sticking process, and does not ask | require temporal order with other processes.

(Coloring sheet pasting process)
In the colored sheet pasting step, the colored sheet is pasted on the flat plate on which the solution pool is formed so that the pattern of the prepared colored sheet overlaps the convex portion from which the release material has been removed in the second release material removing step. It is a process. Pasting may be performed using an adhesive. The adhesive may be disposed on the colored sheet or may be disposed on the convex portion of the luminous display board. In the case where an adhesive is arranged on the colored sheet, the colored sheet may be provided with an adhesive on the back surface in advance, and as an example of such a sheet, a double-sided sheet manufactured by Sumitomo 3M Co., which can be bonded to metal or the like. (Product Nos. PKH-10, PKH-15, PKH-20).

<Effect>
According to the invention of this embodiment, when the phosphorescent material solution is poured into the concave portion of the phosphorescent guide plate, the phosphorescent material solution automatically applied to the convex portion even if it is poured all over the entire surface of the display plate body without worrying about irregularities. It is possible to provide a method for manufacturing a phosphorescent display panel that can display accurate guidance contents in a short time and surely by removing and collecting in the recess. In particular, even when green coloring is required by law, it is possible to cope with this with a simple operation.

<Overview>
The manufacturing method of the luminous display panel of the present embodiment is a method of pressing a metal flat plate to form irregularities, pouring a phosphorescent material solution over the entire surface of the flat plate, and then applying ultrasonic vibrations to the flat plate on the convex portion. The excess phosphorescent material solution remaining on the substrate is removed, and all of the phosphorescent material solution is accumulated in the recesses, so that the phosphorescent layer is formed only in the recesses.

<Process flow>
(General)
FIG. 7 is a diagram illustrating an example of a processing flow in the method for manufacturing a luminous display board according to the present embodiment. As shown in this figure, the flow of processing in the manufacturing method of this example is as follows: flat plate preparation step S0701, solution pool formation step S0702, phosphorescent material solution inflow step S0703, extra removal step S0704, and drying step S0705. including. Among these, since the processing content in a flat plate preparation process and a drying process is the same as that of the place demonstrated in Example 1, description is abbreviate | omitted and the other process is demonstrated below.

(Solution pool formation process)
The solution pool forming step is a step of forming a solution pool in which the pattern is constituted by uneven portions by pressing a flat plate with a predetermined pattern mold. The difference from the solution pool forming step in Example 1 is that the pressing process is performed on the flat plate on which the release material is arranged in Example 1, whereas the flat plate on which no release material is arranged in this example. On the other hand, it is in the point of pressing. This is because in this embodiment, since the phosphorescent material solution is removed by ultrasonic vibration, it is not necessary for the flat plate to repel the phosphorescent material solution by the release material in advance.

(Phosphorescent material solution inflow process)
The phosphorescent material solution inflow step is a step of flowing a phosphorescent material solution for forming a phosphorescent material in a solution pool over the entire surface of the flat plate. Unlike the case of Example 1, since the release material is not arranged on the flat plate, it is not necessary to provide a step of removing the release material in the concave portion before this step, and the processing in this step is performed immediately after the solution pool forming step. Can do. In addition, it is desirable to prepare a saucer for storing the phosphorescent material solution spilled around the flat plate, and this allows the phosphorescent material solution spilled around to be collected and reused. This is the same as described in 1.

(Excess removal process)
The extra removing step is a step of removing the extra phosphorescent material solution remaining on the convex portion of the flat plate on which the concave and convex portions are formed by applying ultrasonic vibration to the flat plate. As a method for applying the ultrasonic vibration, a known ultrasonic oscillator may be used. For example, a flat plate may be placed on the oscillator to transmit the ultrasonic vibration to the flat plate.

  Ultrasound is a sound wave having a frequency of 20 kHz / second or more that cannot be heard by a human ear with normal hearing ability, and has a high directivity, so to speak, it is concentrated and propagates in a specific direction as a bundle of sounds. . In this embodiment, this property is utilized to transmit the ultrasonic vibration to the flat plate so that the phosphorescent material solution is moved by vibration and stored in the recess. That is, when ultrasonic vibration is applied to the flat plate, the extra phosphorescent material solution adhering to the convex portion as water droplets moves little by little due to the vibration, and eventually falls into the concave portion (the rest will spill around the flat plate). Recovered and reusable). The phosphorescent material solution that has once fallen into the concave portion does not move to the convex portion again, but remains in the concave portion as it is. This is because the ultrasonic vibration has an impact force that moves the water droplets on the convex portion, but does not have an impact force that moves the solution accumulated in the concave portion. Similarly, the phosphorescent material solution originally stored in the recess remains in the recess as it is without moving elsewhere. Thus, it is possible to remove all the phosphorescent material solution remaining on the convex portion and collect it in the concave portion or spill around the flat plate by ultrasonic vibration.

<Effect>
According to the invention of this embodiment, when the phosphorescent material solution is poured into the concave portion of the phosphorescent guide plate, the phosphorescent material solution automatically applied to the convex portion even if it is poured all over the entire surface of the display plate body without worrying about irregularities. By being removed, it is possible to provide a method of manufacturing a phosphorescent display board capable of displaying accurate guidance contents reliably in a short time by a method different from the first embodiment. Become.

<Overview>
The manufacturing method of the luminous display panel of this example is basically the same as that of Example 3. However, a predetermined amount of the phosphorescent material solution remains in the recesses of the flat plate in which the irregularities are formed in the extra removal process. Including a sub-step of inclining.

<Process flow>
(General)
FIG. 8 is a diagram illustrating an example of a processing flow in the method for manufacturing a luminous display board according to the present embodiment. The manufacturing method of the luminous display board in a present Example is fundamentally common with the manufacturing method of the luminous display board described in Example 3. FIG. However, the manufacturing method of the present embodiment includes an inclination sub-step S0804a in the extra removal step S0804. Hereinafter, the tilting sub-step will be described sequentially. Since the remaining steps are the same as those described in the third embodiment, description thereof is omitted.

(Inclined sub-process)
The tilting sub-step is a step of tilting to the extent that a predetermined amount of the phosphorescent material solution remains in the concave portion of the flat plate in which the concavo-convex portion is formed in the extra removing step. The purpose of inclining the flat plate is to more smoothly remove the excess phosphorescent material solution remaining on the convex portion. When removing the excessive phosphorescent material solution remaining on the convex part by applying ultrasonic vibration to the flat plate, even if the flat plate is horizontal, the excessive phosphorescent material solution on the convex part is Since it moves at random and eventually falls into the recesses, the phosphorescent material solution on all the protrusions can be finally removed. However, in the present embodiment, since the phosphorescent material solution on the convex portion can easily flow into the concave portion by inclining the flat plate, this removal operation can be performed in a shorter time. .

  The reason why the predetermined amount of the phosphorescent material solution remains in the concave portion is that the phosphorescent material solution in the concave portion may flow out in a large amount if it is tilted too much. Accordingly, a slight amount of the phosphorescent material solution that does not hinder the formation of the phosphorescent material can be used as long as it flows out. It is included in “the degree of remaining”. In this case, since the phosphorescent material solution that has flowed out of the concave portion once flows into another concave portion and accumulates or flows out of the flat plate, all of the excessive phosphorescent material solution on the convex portion is removed. Will not change.

  A suitable angle as an inclination to the extent that a predetermined amount of the phosphorescent material solution remains in the recess is more than 0 ° and not more than 5 °.

<Effect>
According to the invention of this embodiment, when the phosphorescent material solution is poured into the concave portion of the phosphorescent guide plate, the phosphorescent material solution automatically applied to the convex portion even if it is poured all over the entire surface of the display plate body without worrying about irregularities. It is possible to provide a method for manufacturing a phosphorescent display panel that can display accurate guidance contents in a short time and surely by removing and collecting in the recess. In particular, it is possible to remove the phosphorescent material solution on the convex portion in a shorter time.

Claims (4)

A flat plate preparation step of preparing a metal flat plate;
A mold release material arranging step of arranging a mold release material that repels a phosphorescent material solution described later on one surface of the prepared flat plate;
Forming a solution pool in which the pattern is constituted by uneven portions by pressing a flat plate on which a release material is arranged with a predetermined pattern mold, and a solution pool forming step of dividing the release material of the concave portion and the convex portion, and
A first release material removing step of removing only the release material of the concave portion of the flat plate in which the solution pool is formed;
A phosphorescent material that flows in so that the phosphorescent material solution remains only in the recess from which the release material has been removed by flowing a phosphorescent material solution for constituting the phosphorescent material in a solution pool over the entire surface of the flat plate from which the release material has been removed. A solution inflow process;
A drying step of drying the phosphorescent material solution to form the phosphorescent material in the recess where the phosphorescent material solution remained,
The manufacturing method of the luminous display board containing this. A second release material removing step of removing the release material remaining on the convex part;
A colored sheet preparation step of preparing a colored sheet of a pattern constituted by convex portions in the pattern,
A colored sheet pasting step of pasting the colored sheet on the flat plate in which the solution pool is configured so that the pattern of the prepared colored sheet overlaps the convex portion from which the release material has been removed in the second release material removing step;
The manufacturing method of the luminous display board of Claim 1 which further contains these. A flat plate preparation step of preparing a metal flat plate;
A solution pool forming step of forming a solution pool in which the pattern is constituted by the concavo-convex portions by pressing the flat plate with a predetermined pattern mold;
A phosphorescent material solution inflow step for flowing a phosphorescent material solution for constituting a phosphorescent material in a solution pool over the entire surface of the flat plate;
An extra removal step of removing the excess phosphorescent material solution remaining on the convex portion of the flat plate in which the concave and convex portions are configured by applying ultrasonic vibration to the flat plate,
A drying step of drying the phosphorescent material solution to form the phosphorescent material in the recess where the phosphorescent material solution remained,
The manufacturing method of the luminous display board containing this.   The method of manufacturing a luminous display panel according to claim 3, wherein the extra removing step includes a tilting substep of tilting the phosphorescent material solution so that a predetermined amount of the phosphorescent material solution remains in the concave portion of the flat plate in which the uneven portion is formed.

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