JP6114986B2 - Manufacturing method of light emitting plate and light emitting plate manufactured by the manufacturing method - Google Patents

Description

  The present invention relates to a method for manufacturing a light emitting plate and a light emitting plate manufactured by the same manufacturing method.

  A display board for advertising and guidance is provided with a phosphorescent body so that the advertisement and guidance can be viewed brightly even at night by light emission (hereinafter referred to as “light emitting board” in this specification). Conventionally, it has been widely known (for example, refer to Patent Document 1 regarding an outdoor advertising billboard).

JP 2010-151876 A

  On the other hand, three-dimensional advertising billboards have been used in the past as something that attracts attention and can enhance the advertising effect. For example, three-dimensional billboards that display products or service products (crabs, etc.) on a part of the billboard. Are known. Also in the light emitting plate, if at least a part is formed in three dimensions so that the light emitting portion can be seen in three dimensions, it can be expected to attract attention and improve visibility. In order to widely disseminate such a light emitting plate, it is desirable that the light emitting plate can be manufactured by a simple method. However, a technique for manufacturing a light emitting plate in which light emitting portions are three-dimensionally formed by a simple method has not been known.

  Note that it is widely practiced that a three-dimensional part of an advertising billboard as conventionally known is illuminated by an electric lamp at night so that the three-dimensional part looks bright even at night. However, unlike a light-emitting plate that uses the light emission of a phosphorescent material, in the case of an advertising signboard that illuminates such a three-dimensional part with a light, it is not possible to save wiring construction costs at installation and electricity costs at lighting, In addition, since it may become unusable due to a power failure or the like, it cannot be said that it is a substitute for a light emitting plate in which a light emitting portion can be seen three-dimensionally.

  Therefore, the problem to be solved by the present invention is that a light-emitting plate that is more conspicuous can be easily obtained by forming a light-emitting portion including a light-accumulating layer three-dimensionally on the light-emitting plate so that the side surface of the light-accumulating layer can be directly visually recognized. There is in manufacturing. In that case, it is to make a light-emitting plate more conspicuous by making the area of the side surface of the luminous layer directly visible as wide as possible.

  In order to solve the above problems, a first invention is a frame-like body arranging step for arranging a frame-like body having an inner wall inclined with respect to the base on the base, and a phosphorescent raw material inside the arranged frame-like body And a phosphorescent layer forming step of forming a phosphorescent layer by pouring a liquid material containing a light emitting plate.

  Moreover, 2nd invention is based on 1st invention, The manufacturing method of the light-emitting plate which further has the transparent layer formation step which pours the liquid material containing the raw material for transparent layers after the luminous layer formation step, and forms a transparent layer provide.

  Further, the third invention is based on the first or second invention, and the phosphorescent layer forming step includes a first liquid material pouring sub-step for pouring the first liquid material containing the phosphorescent raw material of the first emission color. And a second liquid material pouring sub-step of pouring a second liquid material containing a phosphorescent raw material having a second light emission color different from the first light emission color.

  Further, the fourth invention is based on any one of the first to third inventions, and a larger frame-like body including the phosphorescent layer formed using the frame-like body as a mold after the phosphorescent layer forming step is arranged. And a large frame layer forming step of forming a large frame layer by pouring a liquid material containing a phosphorescent raw material and / or a liquid material containing a raw material for a transparent layer into the large frame body. I will provide a.

  Moreover, 5th invention provides the manufacturing method of the light-emitting plate which is a frame-shaped body which has an inner wall inclined with respect to the base on the said large frame-shaped body based on 4th invention.

  The sixth invention provides a light emitting plate manufactured by the method for manufacturing a light emitting plate according to any one of the first to fifth inventions.

  According to the present invention, by using a method of forming a phosphorescent layer by pouring a liquid material containing a phosphorescent raw material into a frame-like body arranged on a base, a light emitting portion including the phosphorescent layer is three-dimensionally formed on the light emitting plate. Therefore, it is possible to easily manufacture a light-emitting plate that is formed so that the side surface of the phosphorescent layer can be directly visually recognized and made more conspicuous. Moreover, by making the inner wall of the frame-shaped body tilt with respect to the base, the area of the side surface of the phosphorescent layer that can be directly recognized can be increased, and the light-emitting plate can be made more conspicuous. According to the present invention, for example, it is possible to easily produce an advertising billboard that is easily attracted to the public and has a high advertising / advertisement effect.

The figure which shows an example of the flow of the process in the manufacturing method of the light-emitting plate of Example 1. The conceptual diagram for demonstrating the manufacturing method of the light-emitting plate of Example 1. FIG. The conceptual diagram for demonstrating the manufacturing method of the light-emitting plate of Example 1. FIG. The figure which shows the example which a frame-shaped body consists of a transparent material, and the example which consists of a transparent material The figure which shows an example of the flow of the process in the manufacturing method of the light-emitting plate of Example 2. The conceptual diagram for demonstrating the manufacturing method of the light-emitting plate of Example 2. FIG. The figure which shows an example of the flow of the process in the manufacturing method of the light-emitting plate of Example 3. The conceptual diagram for demonstrating the manufacturing method of the light-emitting plate of Example 3. The figure which shows an example of the light-emitting plate manufactured with the manufacturing method of Example 3.

S0101 Frame-shaped body placement step S0102 Reflective layer forming step S0103 Luminous layer forming step S0104 Transparent layer forming step S0105 Frame-shaped body removing step 0200 Base 0210 Frame-shaped body 0211 Upper opening surface 0212 Lower opening surface 0213 Inner wall

Examples of the present invention will be described below. The relationship between the embodiments and the claims is as follows. The first embodiment mainly relates to claims 1 and 2, the second embodiment mainly relates to claim 3, and the third embodiment mainly relates to claims 4 and 5. 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 light-emitting plate according to the invention of the present embodiment includes a step of arranging a frame-like body having an inner wall inclined with respect to the base on the base, and a liquid material containing a phosphorescent raw material inside the arranged frame-like body And a step of forming a phosphorescent layer. Moreover, what has further the step which pours the liquid material containing the raw material for transparent layers after the step which forms a luminous layer, and forms a transparent layer is also contained in a present Example. Moreover, the light-emitting plate manufactured using such a manufacturing method is also included in the invention of this embodiment.

<Process flow>
(General)
FIG. 1 is a diagram illustrating an example of a processing flow in the method of manufacturing a light emitting plate according to the present embodiment. As shown in this figure, the method for manufacturing a light emitting plate according to the invention of this embodiment includes a frame-shaped body arrangement step S0101 and a luminous layer forming step S0103. Hereinafter, each of these steps will be described in detail.

    (Frame-shaped body arrangement | positioning step) A frame-shaped body arrangement | positioning step is a step which arrange | positions the frame-shaped body which has an inner wall inclined with respect to the base on a base.

  FIG. 2 is a conceptual diagram for explaining the manufacturing method of the light emitting plate of this embodiment. 2A is a perspective view showing a state in which a frame-like body 0210 having an inner wall inclined with respect to the base is arranged on the base 0200. FIG. FIG. 2B is a cross-sectional view taken along the line XX of FIG. 2A (cut along a vertical plane passing through the approximate top of the frame-like body).

  The “frame-like body” is a bottomless cylindrical member having an upper opening surface 0211 and a lower opening surface 0212 as shown in these drawings. In the example of this figure, the shape of the frame state is such that the shape is such that a substantially hemisphere is covered on a substantially cylindrical shape, but the shape of the frame-shaped body is not particularly limited, for example, a substantially cylindrical shape, It may be a substantially prismatic shape, a substantially conical shape, a substantially pyramid shape, a substantially hemispherical shape, or the like.

  The frame-like body has an inner wall 0213 inclined with respect to the base. “Inclined with respect to the base” means that the angle formed by the inner wall of the frame-like body and the base surface is less than 90 degrees as measured from the inside of the frame-like body. In other words, it means that the inner wall does not stand vertically with respect to the base but is inclined toward the inside of the frame-like body. The example shown in FIG. 2B is an example in which the angle θ formed by the inner wall and the base surface is about 60 degrees. Note that there is no limitation on the direction of the inclination, and even if it is inclined in the direction of falling toward the inner side of the frame-like body as in the example of FIG. 2, it is directed to the outside of the frame-like body on the contrary. It may be tilted in a direction to fall down. In addition, the inclination does not need to be constant. For example, the inclination may change in the middle such as a combination of two planes having different inclinations or an arc shape. Furthermore, the inner wall is not limited to the one that is inclined, and a portion that is vertically vertical may be present on a part of the inner wall.

  The reason why the inner wall is inclined with respect to the base is as follows. As will be described later, the light-emitting plate obtained by the manufacturing method of this example is directly or transparent by removing the frame-like body from the outside of the side surface of the phosphorescent layer formed by being poured into the frame-like body. It is characterized in that it can be visually recognized through the body. In that case, if the inner wall is inclined, the area of the side surface of the luminous layer that can be visually recognized can be increased if the height of the luminous layer is the same. Thereby, a light-emitting plate can be made conspicuous.

  There is no particular limitation on the material of the frame-shaped body. However, the shape of the frame-shaped body does not change when the liquid material containing the phosphorescent raw material is poured so that the liquid material containing the phosphorescent raw material poured into the frame-shaped body is formed in the phosphorescent layer of a predetermined shape. From this point of view, the frame body is preferably made of metal, ceramic, hard resin, or the like. Specifically, metals such as iron, nickel, titanium, chromium, aluminum, copper, stainless steel, and brass, ceramics such as fine ceramics, earthenware, and glass, and hard resins such as acrylic resin and polycarbonate resin are conceivable. Further, if a transparent material such as transparent glass, acrylic resin, polycarbonate resin or the like is used as the material of the frame-like body, it is not necessary to remove the frame-like body after forming the phosphorescent layer or the like as will be described later.

  The frame-like body may be removed after the phosphorescent layer is formed, or may be used as a part of the light emitting plate as it is. When the frame body is used as it is as a part of the light emitting plate, light emitted from the phosphorescent layer is irradiated to the outside through the frame body, so the frame body is transparent (translucent or partially Including transparent, the same shall apply hereinafter. Details will be described later.

(Phosphorescent layer formation step)
The phosphorescent layer forming step is a step of forming a phosphorescent layer by pouring a liquid material containing a phosphorescent raw material into the arranged frame-like body. For example, as shown in FIG. 2A, the liquid material containing the phosphorescent raw material may be poured in the direction of arrow A from the upper surface opening of the frame-like body into the inside of the frame-like body.

  FIG. 3 is also a conceptual diagram for explaining the manufacturing method of the light emitting plate of the present embodiment, and is shown by a cross-sectional view similar to FIG. Among these, FIG. 3A shows a state in which a liquid material 0301 containing a phosphorescent raw material (portion indicated by oblique lines) is poured into the frame body 0310 in the phosphorescent layer forming step. The example of this figure is an example which has a transparent layer formation step after that so that it may mention later, and the phosphorescent raw material is put in the middle without completely filling the inside of a frame-shaped body. In this case, as shown in FIG. 3B, after the luminous layer is formed, the liquid material 0302 (portion indicated by dots) containing the transparent layer raw material is poured so as to completely fill the inside of the frame-like body. Or like the example of this figure (c), only the liquid material 0301 containing a phosphorescent raw material may be poured so that the inside of a frame-shaped body may be filled completely. In this case, there is no step for pouring the transparent layer raw material.

(Reflection layer forming step)
As shown in FIG. 1, the light emitting plate manufacturing method of the present embodiment may include a reflective layer forming step S0103 between the frame-like body arranging step and the luminous layer forming step. The reflective layer is a layered member containing a reflective material, and is for reflecting the light from the phosphorescent material to improve the visibility of the light emitting plate. As the reflector material, for example, a white pigment such as titanium oxide or silica is used. The method for forming the reflective layer is not particularly limited. For example, a reflective film formed in advance may be attached to the phosphorescent layer with an adhesive, or a reflective material may be applied and printed on the phosphorescent layer. You may make it do. Alternatively, a liquid material containing a reflective layer raw material may be poured from the upper opening surface of the frame-like body. For example, as shown in FIG. 2A, the liquid material containing the reflective layer raw material may be poured in the direction of arrow A from the upper surface opening of the frame-like body into the inside of the frame-like body.

(Transparent layer forming step)
As shown in FIG. 1, the manufacturing method of the light emitting plate of the present embodiment may include a transparent layer forming step S0104 after the luminous layer forming step. The transparent layer forming step is a step of forming a transparent layer by pouring a liquid material containing the raw material for the transparent layer into the frame-like body after the luminous layer forming step. For example, as shown in FIG. 2A, the liquid material containing the raw material for the transparent layer may be poured in the direction of arrow A from the upper surface opening of the frame-like body into the inside of the frame-like body. The raw material for the transparent layer is poured after the phosphorescent layer is formed by the phosphorescent layer forming step, that is, after the liquid material containing the phosphorescent raw material is poured and dried. At this time, as shown in FIG. 3B, the transparent layer raw material is poured so as to completely fill the inside of the frame-like body as described above.

  The transparent layer is a layered member formed of a transparent material such as a transparent resin, and the purpose of the arrangement is generally to prevent damage / deterioration and contamination of the phosphorescent layer. The transparent layer has a three-dimensional shape on the light emitting plate, and the side surfaces thereof can be visually recognized, so that the light emission from the phosphorescent layer can be more easily visually recognized. At this time, since the transparent layer raw material is also poured into the inside of the frame body having the inclined inner wall in this embodiment, the formed transparent layer is similar to the phosphorescent layer and can be visually recognized if the height is the same. The area of the side surface can be increased. Thereby, a light-emitting plate can be made conspicuous. As the transparent layer raw material, for example, a transparent fluororesin such as PTFE is used.

  Further, as a method for forming the transparent layer, it is only necessary to pour a predetermined amount of the liquid transparent layer raw material into the recess and dry it by using a method of pouring the liquid transparent layer raw material until the frame body is fully filled. Therefore, the transparent layer can be easily formed. In addition, considering the shrinkage due to drying, it is possible to know in advance how much thickness and volume of transparent layer will be formed by pouring the amount of transparent layer raw material. Since it is only necessary to pour the raw material of the transparent layer at once, the transparent layer can be easily formed from this point.

  The amount into which the transparent layer raw material is poured may be such that the inside of the frame-like body is fully filled with the phosphorescent layer and the transparent layer (in the case of having a reflective layer, in addition to the reflective layer).

(Frame removal step)
Furthermore, the light emitting plate manufacturing method of the present embodiment has a frame-like body removing step S0105 after the phosphorescent layer forming step (after the transparent layer forming step if it has a transparent layer forming step as shown in FIG. 1). You may do it. The frame-like body removing step is a step of removing the frame-like body from the formed phosphorescent layer (or in addition to this, the reflective layer and / or the transparent layer).

  Whether or not the frame body is removed is related to whether or not the frame body is made of a transparent material. FIG. 4 is a diagram showing an example in which the frame-like body is made of a transparent material and an example made of a transparent material, and the same shape as the frame-like body shown in FIG. Is. 4A and 4B are examples in which the entire frame-like body 0410 is made of an opaque material (the portion whose end face is shown in black is an opaque material portion, the same applies hereinafter). Furthermore, among these, (a) is an example in which the entire inside of the frame-shaped body is filled with only the luminous layer 0401 (however, the reflective layer is not formed below the luminous layer. The same applies hereinafter). (B) is an example in which the inside of the frame-like body is filled with the luminous layer 0401 and the transparent layer 0402. In this case, it is essential to have a frame-like body removing step after the phosphorescent layer forming step or the transparent layer forming step.

  FIGS. 4C and 4D show a state in which the frame-like body is removed from the states of FIGS. 4A and 4B, respectively. Thus, by removing the frame-like body, it becomes possible to visually recognize the light emitting portion including the luminous layer formed three-dimensionally from the side.

  Further, FIGS. 4E and 4F are examples in which the entire frame-shaped body is made of a transparent material (the portion whose end face is shown in white is a transparent material portion, the same applies hereinafter). Among these, (e) is an example in which the entire inside of the frame-shaped body 0410 is filled only with the luminous layer 0401, and (f) is an example in which the inside of the frame-shaped body is filled with the luminous layer 0401 and the transparent layer 0402. It is an example. In this case, the frame-like body removing step is not essential, and the frame-like body can be used as a light emitting plate while leaving the frame-like body.

  When the frame-shaped body removing step is included, a release agent may be applied to the inner wall of the frame-shaped body in advance in order to remove the frame-shaped body more smoothly. That is, the manufacturing method of the phosphorescent display panel of the present embodiment is such that the mold release agent is applied to the inner wall of the frame body before the frame body arrangement step or between the frame body arrangement step and the phosphorescent layer formation step. An application step may be included. For example, a silicone-based mold release agent may be used as the mold release agent.

  In addition, when the frame-like body removing step is included, the surface of the phosphorescent layer is removed after the frame-like body removing step in order to prevent the phosphorescent layer from being exposed to the outside to be damaged, deteriorated or soiled. It is desirable to have a step (transparent protective material disposing step) of disposing a transparent protective material by coating or the like. On the other hand, even when there is no frame-shaped body removal step and when there is no transparent layer forming step (as in the example of FIG. 4E), the phosphorescent layer is exposed through the upper opening of the frame-shaped body. Therefore, since it is necessary to prevent the phosphorescent layer from being damaged, deteriorated or soiled, it is desirable to have the same transparent protective material arrangement step as above.

  In the light emitting plate manufactured by the method as described above, a portion including the phosphorescent layer is formed three-dimensionally on the light emitting plate body, and these can be viewed from the side. Note that the three-dimensional portion including the phosphorescent layer may be fixedly installed on the light emitting plate body. In this case, if it is used without removing the frame-like body, the frame-like body may be fixed to the light emitting plate body by an adhesive or screwing. Further, if the frame body is used after removal, for example, the back surface of the reflective layer may be fixed to the light emitting plate body with an adhesive or the like. Moreover, in order to prevent peeling of a reflection layer and a luminous layer, and a luminous layer and a transparent layer, you may arrange | position sticky materials, such as transparent gel, between these layers. Alternatively, if the light emitting plate is used in a horizontal state, the light emitting portion may simply be placed on the light emitting plate body. In the latter case, since the arrangement of the three-dimensional part can be frequently changed, the content of messages such as advertisements can be varied.

(Light-emitting plate manufactured by the manufacturing method of this example)
The light emitting plate manufactured by the method as described above has a feature that light from the phosphorescent layer can be easily visually recognized even from an oblique direction.

<Effect>
According to the invention of the present embodiment, by using a method of forming a phosphorescent layer by pouring a liquid material containing a phosphorescent raw material into a frame-like body arranged on the base, light emission including the phosphorescent layer on the light emitting plate It is possible to easily manufacture a light-emitting plate that is formed in a three-dimensional manner so that the side surfaces of the phosphorescent layer can be directly visually recognized and made more conspicuous. Moreover, by making the inner wall of the frame-shaped body tilt with respect to the base, the area of the side surface of the phosphorescent layer that can be directly recognized can be increased, and the light-emitting plate can be made more conspicuous. According to the present invention, for example, it is possible to easily produce an advertising billboard that is easily attracted to the public and has a high advertising / advertisement effect.

<Overview>
The present embodiment is basically in common with the first embodiment. However, this embodiment is characterized in that the phosphorescent layer forming step has two sub-steps for pouring a liquid material containing phosphorescent raw materials of different emission colors. Moreover, the light-emitting plate manufactured using such a manufacturing method is also included in the invention of this embodiment.

<Process flow>
(General)
FIG. 5 is a diagram illustrating an example of a processing flow in the method of manufacturing a light emitting plate according to the present embodiment. The processing flow in the present embodiment is basically the same as the processing flow in the first embodiment, but in this embodiment, the luminous layer forming step S0502 includes the first liquid material pouring sub-step S0503 and the second liquid material pouring sub. Step S0504. Hereinafter, these sub-steps will be described. Since the remaining processing flow is the same as that of the first embodiment, the description thereof is omitted.

(Phosphorescent layer formation step: first liquid material pouring sub-step)
The “first liquid material pouring sub-step” is a step of pouring the first liquid material. The “first liquid material” is a liquid material containing a phosphorescent raw material of the first emission color. The first emission color is an emission color different from the second emission color.

(Phosphorescent layer formation step: second liquid material pouring sub-step)
The “second liquid material pouring sub-step” is a step of pouring the second liquid material. The “second liquid material” is a liquid material containing a phosphorescent raw material having a second emission color different from the first emission color.

(Purpose and specific configuration example of this embodiment)
The purpose of this embodiment is to make the light emission of the three-dimensional part of the light-emitting plate more conspicuous by setting the light emission colors of the phosphorescent layer to two different colors. For example, if this is applied to an advertising billboard, it can be expected that colorful colors will attract attention and provide an advertisement with a high advertising effect.

  Next, an example of a specific configuration will be described. FIG. 6 is a conceptual diagram for explaining the manufacturing method of the light emitting plate of the present embodiment, and is shown by a cross-sectional view similar to FIG. As shown in the figure, in this embodiment, the luminous layer is formed over two layers. First, FIG. 6A shows a state in which the first liquid material 0601a (the portion indicated by the oblique line rising to the right) is poured in the first liquid material pouring sub-step.

  Examples of the phosphorescent raw material of the first emission color contained in the first liquid material include, for example, a phosphorescent pigment having zinc sulfide as a mother crystal (emission color is yellow-green) and a phosphorescent pigment having a strontium aluminate salt as a mother crystal (light emission) The color is green) and so-called color phosphorescent pigments (known are those whose emission colors are red, blue, yellow, etc.).

  FIG. 6B shows that after the first phosphorescent layer is formed in the first liquid material pouring sub-step, the second liquid material 0601b (the portion indicated by a left-upward oblique line) is formed in the second liquid material pouring sub-step. Shows the state of being poured. As the phosphorescent raw material of the second luminescent color contained in the second liquid material, among the phosphorescent raw materials similar to those exemplified above as the phosphorescent raw material of the first luminescent color, light emission different from the first luminescent color Colored ones are mentioned.

  In the above, the case where the phosphorescent layer formed in the phosphorescent layer forming step is two layers has been described, but the phosphorescent layer forming step in the present embodiment is the second emission color after the second liquid material pouring substep. It may have a third liquid material pouring sub-step, which is a step of pouring a third liquid material that is a liquid material containing a phosphorescent raw material of a third emission color different from that, and the fourth, fifth, etc., which are the same as the above. May have substeps.

  The light emitting plate manufactured by the manufacturing method of the present embodiment is such that the phosphorescent layers having different emission colors are formed in multiple layers, so that the side surface of each phosphorescent layer can be visually recognized from the outside in the state of use. It can be.

<Effect>
According to the present embodiment, the light emission of the phosphorescent layer is made of two different colors, so that the light emission of the three-dimensional portion of the light emitting plate can be made more conspicuous.

<Overview>
The present embodiment is basically in common with the first or second embodiment. However, in the present embodiment, after the phosphorescent layer forming step, a step of arranging a larger frame-like body that encloses the phosphorescent layer formed using the frame-like body as a mold, and a liquid material containing a phosphorescent raw material inside the large frame-like body Alternatively, the method further includes the step of pouring a liquid material containing the raw material for the transparent layer to form a large frame layer. In addition, the invention of this embodiment also includes a frame-shaped body in which the large frame-shaped body has an inner wall inclined with respect to the base. Moreover, the light-emitting plate manufactured using such a manufacturing method is also included in the invention of this embodiment.

<Process flow>
(General)
FIG. 7 is a diagram illustrating an example of a processing flow in the method of manufacturing the light emitting plate according to the present embodiment. The processing flow in the present embodiment is basically the same as the processing flow in the first or second embodiment, but in this embodiment, after the phosphorescent layer forming step S0702, there is a large frame-like body arrangement step S0703, and then Has a large frame layer forming step S0704. In addition, when it has a transparent layer formation step and a frame-shaped body removal step after a luminous layer formation step, it is desirable to have a large frame-shaped body arrangement | positioning step after these steps. Hereinafter, the large frame-like body arranging step and the large frame layer forming step will be described. Since the remaining processing flow is the same as in the first or second embodiment, the description thereof is omitted.

(Large frame placement step)
The large frame-like body arranging step is a step of arranging the large frame-like body. The “large frame-like body” is a larger frame-like body that includes a phosphorescent layer formed using the frame-like body as a mold after the phosphorescent layer forming step. The large frame-like body may have an inner wall inclined with respect to the base. The significance is the same as that described in the first embodiment.

  FIG. 8 is a conceptual diagram for explaining the manufacturing method of the light emitting plate of the present embodiment, and is shown by a cross-sectional view similar to FIG. As shown to this figure (a), in a present Example, the large frame-shaped body 0850 which is a larger frame-shaped body which includes this is arrange | positioned around the luminous layer 0801a formed in the luminous layer formation step. In the drawing, an example in which the frame-like body is removed by the frame-like body removing step prior to the large-frame-like body arranging step is shown, but the frame-like body may be removed after the large frame-like body is arranged. When a transparent material frame is used, the large frame layer described below may be formed without removing the frame.

  A large frame-like body is a “larger frame-like body containing a phosphorescent layer formed by using the frame-like body as a mold” when the large frame-like body completely encloses the frame-like body in a plan view. As for the height, there is no limitation on the relationship between the two, and there is no problem even if the height of the large frame-like body is lower than the height of the frame-like body. This will be described again after the large frame layer forming step is described.

(Large frame layer forming step)
The large frame layer forming step is a step of forming a large frame layer by pouring a liquid material containing a phosphorescent raw material and / or a liquid material containing a transparent layer raw material into the large frame-like body. FIG. 8B shows a state where a large frame layer is formed by pouring a liquid material containing a phosphorescent raw material into the large frame. As described above, in this example, the frame-shaped body is removed prior to this step. However, if the frame-shaped body is made of a transparent material, the liquid material containing the phosphorescent raw material with the frame-shaped body remaining or / And a liquid material containing the raw material for the transparent layer may be poured. The procedure for pouring the liquid material containing the phosphorescent raw material and / or the liquid material containing the transparent layer raw material is the same as the procedure for pouring these liquid materials in the aforementioned phosphorescent layer forming step and transparent layer forming step. In addition, before pouring the liquid material containing the phosphorescent raw material (or before pouring only the liquid material containing the raw material for the transparent layer), there may be a step of forming a reflective layer on the light emitting plate body. This is the same as the reflection layer forming step described above.

  Furthermore, the manufacturing method of the light emitting plate of the present embodiment may include a large frame body removing step of removing the large frame body after the large frame layer forming step. Whether or not to remove the large frame-like body depends on the material of the large frame-like body as described for the frame-like body. In the example of this figure, an example is shown in which the large frame is removed after the large frame layer is formed on the assumption that the large frame is an opaque material.

  FIG. 9 shows an example in which the height h1 of the large frame body is lower than the height h2 of the frame body. If it does in this way, even if the large frame layer is formed, a part of the phosphorescent layer formed using the frame-like body as a mold can be exposed without being buried in the large frame layer. On the other hand, unlike the example of this figure, the height of the large frame body may be higher than the height of the frame body, and the liquid material containing the liquid material phosphorescent raw material containing the phosphorescent raw material may be poured up to the height of the large frame body. . However, in this case, in order to make it possible to visually recognize at least a part of the phosphorescent layer embedded in the large frame layer, the liquid material containing the phosphorescent raw material is poured to a position where the phosphorescent layer is not completely hidden. From above, it is desirable to pour a liquid material containing the raw material for the transparent layer.

  Furthermore, if the phosphorescent layer is formed over two or more layers of different emission colors in the manufacturing method of this embodiment, a light emitting plate that emits light in a plurality of colors with various designs can be provided. If applied to a sign, it can be expected to provide a sign that is very eye-catching and has a high advertising effect.

  For reference, FIG. 9 is a diagram showing an example of a light-emitting plate manufactured by the manufacturing method of the present embodiment, in which both the phosphorescent layer and the large frame layer formed using a frame-like body as a mold have different emission colors. It is an example formed with two layers. The example of this figure is formed by removing the frame-like body and the large-frame-like body, and the phosphorescent layer 0901a in which the exposed portion of the phosphorescent layer formed using the frame-like body as a mold emits light in the first emission color; It has a two-layer structure of a luminous layer 0901b that emits light in the second emission color. The large frame layer also has a two-layer structure of a luminous layer 0901c that emits light in the first emission color and a luminous layer 0901d that emits light in the second emission color. FIG. 9 shows an example in which one frame-like body and one large-frame-like body are used. However, a large-frame-like body that includes a plurality of frame-like bodies may be used. It is also possible to use a frame-like body having multiple inclusion relationships such as a larger frame-like body (so-called super-large frame-like body).

<Effect>
According to the present embodiment, the light emitting plate having a dual structure of the phosphorescent layer formed on the inner side and the phosphorescent layer / transparent layer formed around the inner layer is used to make the light emission of the three-dimensional portion of the light emitting plate more conspicuous. can do.

Claims (5)

A frame-shaped body arrangement step of arranging a frame-shaped body having an inner wall inclined with respect to the base on the base;
A phosphorescent layer forming step of forming a phosphorescent layer by pouring a liquid material containing a phosphorescent raw material into the arranged frame-like body;
The manufacturing method of the light-emitting plate which has this.   The manufacturing method of the light-emitting plate according to claim 1, further comprising a transparent layer forming step of forming a transparent layer by pouring a liquid material containing the raw material for the transparent layer after the luminous layer forming step. The phosphorescent layer forming step includes
A first liquid material pouring sub-step for pouring the first liquid material containing the phosphorescent raw material of the first emission color;
The method for manufacturing a light emitting plate according to claim 1, further comprising: a second liquid material pouring sub-step for pouring a second liquid material containing a phosphorescent raw material having a second light emission color different from the first light emission color. A large frame-like body arrangement step for arranging a larger frame-like body containing the phosphorescent layer formed using the frame-like body as a mold after the phosphorescent layer forming step;
The light emission according to any one of claims 1 to 3, further comprising a large frame layer forming step of forming a large frame layer by pouring a liquid material including a phosphorescent raw material and / or a liquid material including a transparent layer raw material into the large frame body. A manufacturing method of a board.   The method of manufacturing a light emitting plate according to claim 4, wherein the large frame-shaped body is a frame-shaped body having an inner wall inclined with respect to the base.

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