JP2006162799A - Display board and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display board whose afterglow performance can be improved while its weather resistance is secured. <P>SOLUTION: A point post 1 consisting of a base plate 2 having a luminous plate 3 containing an afterglowing granular luminous material and a protection plate 4 on the front face side of the luminous plate 3 is provided with a jointing section 6 comprising: a top face jointing section 6a placed between the luminous plate 3 and the protection plate 4 to bond the luminous plate 3 to the protection plate 4; a bottom face jointing section 6c placed between the base plate 2 and the luminous plate 3 to bond the luminous plate 3 to the base plate 2; and a periphery jointing section 6b placed around the luminous plate 3 and between the base plate 2 and the protection plate 4 to bond the base plate 2 to the protection plate 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sign board used for a sign such as a guide, and more particularly to a sign board having afterglow characteristics that continues to emit light after the irradiated light has disappeared and a method for manufacturing the same.

  There is a granular phosphorescent material that has afterglow properties that continue to emit light after absorbing light energy from natural light or artificial light and releasing it as light. A labeling plate using this phosphorescent material is described in Patent Document 1. The labeling plate described in Patent Document 1 is obtained by exposing an adhesive surface of an adhesive sheet serving as a substrate in the form of an image or characters, and a phosphorescent material is lowered onto the adhesive surface to adhere the phosphorescent material. In this way, by using the phosphorescent material for the marking plate, the phosphorescent material can be phosphorescent during the daytime, and at night, the phosphorescent material can be afterglow and brightly labeled.

  The signboard using phosphorescent material is brighter and more visible when the light emitting surface of the phosphorescent material occupies the entire surface of the signboard is brighter and more visible. It is desirable to use a phosphorescent plate formed in a plate shape with resin or ink. This is because, when viewed from a distance at night, the presence of the sign board can be noticed, so that the sign characters and sign symbols on the front surface of the phosphorescent plate can be watched. Such a marking plate is described in Patent Document 2.

  The labeling plate described in Patent Document 2 is obtained by pasting a phosphorescent plate on which a sign A and a sign B are pasted on a sign frame back member and pasting a sign character or a line-of-sight guidance character on the sign A.

  However, in the sign plate described in Patent Document 2, the phosphorescent plate is exposed on the surface, and in the sign plate arranged in the city or near the road, the phosphorescent material such as light-transmitting acrylic is used as the protective plate. It is desirable to stick it on the front of the board. The reason for this is that sand etc. is blown by the traffic on the road and hits the light emitting surface of the phosphorescent plate and damages the light. is there. Therefore, it seems that it is desirable to provide a transparent protective plate on the front surface of the phosphorescent plate from the viewpoint of protecting the phosphorescent plate in the labeling plate described in Patent Document 2.

JP 2004-45823 A Utility Model Registration No. 3091423

However, when a phosphorescent plate is provided on the substrate and a protective plate is provided on the front surface of the phosphorescent plate, the peripheral surface of the phosphorescent plate is exposed from between the substrate and the protective plate. If the sign board is installed on the roadside or the outer wall of the building, it will be exposed to rainwater, so that the exposed surface of the phosphorescent plate gets wet or wet. When the surrounding surface of the phosphorescent plate gets wet or wet, the persistence deteriorates from the surrounding surface.
On the other hand, in order to increase the persistence of the phosphorescent plate, it is better to use a phosphorescent material having a large particle size, and the phosphorescent material having a large particle size is laminated with a resin or an ink agent. The amount of accumulated light is further increased by forming a thicker layer.
Thus, since it is necessary to increase the thickness in order to improve the afterglow performance of the phosphorescent plate, the gap between the substrate and the protective plate is further increased, and the phosphorescent plate is likely to be exposed to moisture. Deterioration becomes noticeable. If it is a thin phosphorescent plate, it can be considered that the phosphorescent plate is formed smaller than the substrate and the protective plate and bonded, by pressing around the phosphorescent plate from the surface of the substrate and the protective plate. When the plate is thick, it becomes difficult to press the periphery of the phosphorescent plate from the surface of the substrate and the protective plate and adhere with an adhesive.

  Accordingly, an object of the present invention is to provide a sign plate and a method for manufacturing the same that can improve afterglow performance while ensuring weather resistance.

  The marking plate of the present invention is a marking plate in which a phosphorescent plate containing a phosphorescent material having afterglow properties is provided on a substrate, and a protective plate is provided on the front side of the phosphorescent plate, between the phosphorescent plate and the protective plate. Adhering the phosphorescent plate and the protective plate interposed therebetween, and adhering the substrate and the protective plate around the phosphorescent plate and interposed between the substrate and the protective plate A portion is provided.

  The adhesive part is around the phosphorescent plate and is provided between the substrate and the protective plate, and the substrate and the protective plate are bonded so as to surround the phosphorescent plate, so the phosphorescent plate protects the substrate There is no part exposed between the board. Therefore, even if the phosphorescent plate is thick and the space between the substrate and the protective plate is open, the substrate and the protective plate are bonded together to maintain the shape as a sign plate, and moisture intrusion to the phosphorescent plate can be achieved. It can be prevented from reaching.

  If the adhesive part is provided around the phosphorescent plate and only between the substrate and the protective plate, the phosphorescent plate is attached to the adhesive part only on its peripheral surface, so the adhesive force is weak, There is also a risk that the phosphorescent plate is displaced. Since the bonding portion is also provided on the surface of the phosphorescent plate, the phosphorescent plate and the protective plate can be more closely attached. Further, since the phosphorescent plate is sealed by the substrate and the adhesive portion formed so as to cover the phosphorescent plate, it is possible to prevent rainwater and the like from entering. Moreover, even if the phosphorescent plate has an irregular surface with a granular phosphorescent material, the adhesive portion serves as a layer and covers the irregular surface, so that the planar shape can be obtained. Accordingly, it is possible to ensure the adhesion between the phosphorescent plate and the protective plate.

  It is desirable that the adhesive portion is also provided between the phosphorescent plate and the substrate. By providing the bonding portion between the phosphorescent plate and the substrate, the phosphorescent plate can be adhered to the substrate, so that the adhesive force on the back surface side is further added to the adhesive force on the front surface side of the phosphorescent plate. Therefore, the substrate, the phosphorescent plate, and the protective plate can be integrated more firmly.

  The adhesive part is preferably formed of a thermoplastic sheet having adhesiveness when heat-softened. By heat-softening the adhesive thermoplastic sheet, it is possible to form an adhesive portion that can easily seal the phosphorescent plate while adhering the substrate, the protective plate, and the phosphorescent plate.

  The method for producing a sign plate according to the present invention is the method for producing a sign plate in which a phosphorescent plate containing a phosphorescent material having afterglow is provided on a substrate, and a protective plate is provided on the front side of the phosphorescent plate. Forming the phosphorescent plate in such a size that a peripheral portion of the phosphorescent plate becomes an adhesive surface between the substrate and the protective plate when the phosphorescent plate is bonded together; and an adhesive surface of the substrate The phosphorescent plate is disposed so as to be exposed, a thermoplastic sheet having adhesiveness when softened and cured is disposed on the front surface of the phosphorescent plate, and the protection plate is made to correspond to the substrate and the heat Placing on the upper surface of the plastic sheet, reducing and heating the atmosphere, deforming the thermoplastic sheet, filling the peripheral portion of the phosphorescent plate sandwiched between the substrate and the protective plate, The substrate, the phosphorescent plate, and the protective plate are in contact with each other. Characterized by comprising a bonding step for.

  By reducing the atmosphere, the degree of adhesion between the substrate and the protective plate is increased, and by heating, the thermoplastic sheet disposed between the phosphorescent plate and the protective plate is softened. As the degree of adhesion between the substrate and the protective plate increases, the space between the phosphorescent plate and the protective plate becomes narrower. Therefore, the softened thermoplastic sheet keeps the phosphorescent plate and the protective plate in close contact with each other, but the excess part is the phosphorescent plate. Move towards the perimeter of. As the extra portion of the thermoplastic sheet moves to the periphery of the phosphorescent plate, it is filled into the peripheral portion of the phosphorescent plate sandwiched between the substrate and the protective plate. And the thermoplastic sheet with which the surrounding part of the phosphorescent board was filled closely_contact | adheres to a board | substrate and a protection board, respectively. Since the thermoplastic sheet softened in this way is deformed, when the thermoplastic sheet is cured, the phosphorescent plate and the protective plate can be bonded together, and the substrate and the protective plate can be bonded together. Moreover, since the thermoplastic sheet is deformed so as to cover the phosphorescent plate and the phosphorescent plate is sealed, even if the phosphorescent plate is thick and the space between the substrate and the protective plate is open, it prevents moisture from entering. Can do. Further, since the bonding between the substrate, the phosphorescent material and the protective plate is performed while reducing the pressure, when the thermoplastic sheet is softened and bonded, the air between them moves to the surroundings and escapes. Therefore, it is possible to prevent the occurrence of bubble accumulation on the adhesive surface of the thermoplastic sheet.

  In the arranging step, it is desirable that the thermoplastic sheet is arranged on the front surface of the phosphorescent plate and also arranged between the phosphorescent plate and the substrate. If the thermoplastic sheet is also arranged between the phosphorescent plate and the substrate in the arranging step, the thermoplastic sheet arranged also between the phosphorescent plate and the substrate in the bonding step may be softened to bond the substrate and the phosphorescent plate. it can. Therefore, since the thermoplastic sheet layer is formed so as to be sandwiched between the front and back surfaces of the phosphorescent plate while surrounding the phosphorescent plate, the degree of sealing is improved. Further, when the substrate and the protective plate are pressurized in the bonding step, the phosphorescent plate can be prevented from shifting.

The present invention has the following effects.
(1) Since the bonding portion is provided around the phosphorescent plate and between the substrate and the protective plate, in order to improve the afterglow performance of the phosphorescent plate, the thickness of the phosphorescent plate is increased, Even if the space between the substrate and the protection plate is open, it is possible to prevent moisture from entering the phosphorescent plate due to rainwater or the like. Therefore, afterglow performance can be improved while ensuring weather resistance. Moreover, since the adhesion part is provided also on the surface of the phosphorescent plate, the phosphorescent plate and the protective plate can be more closely attached. Therefore, the strength against peeling between the substrate and the protective plate is improved, and the strength against rainwater intrusion can be further increased.
(2) Since the adhesive portion is also provided between the phosphorescent plate and the substrate, the strength against peeling between the substrate and the phosphorescent plate is further improved. Since the phosphorescent plate can be sandwiched between the front surface and the back surface and sealed so as to surround the periphery, the weather resistance is further improved.
(3) Since the adhesive portion is formed by heating and softening a thermoplastic sheet, the phosphor sheet is sealed while bonding the substrate and the protective plate by heating and softening the thermoplastic sheet. An adhesion part can be formed easily.
(4) A thermoplastic sheet having adhesion when softened and cured is placed on the front surface of the phosphorescent plate, the thermoplastic sheet is heated and softened, and the atmosphere is decompressed so that the phosphorescent plate is covered. The thermoplastic sheet can be deformed to seal the phosphorescent plate. Therefore, in order to improve the afterglow performance of the phosphorescent plate, the penetration of moisture can be prevented by increasing the thickness of the phosphorescent plate even if the space between the substrate and the protective plate is open. Therefore, it is a method which can manufacture the sign board which can aim at the improvement of afterglow performance, ensuring a weather resistance. Further, it is possible to prevent bubble accumulation between the phosphorescent plate and the protective plate and between the phosphorescent plate and the substrate. Therefore, it is possible not only to prevent the bubble reservoir from thermally expanding and causing separation, but also to provide a signboard having a good appearance.
(5) In the arranging step, the thermoplastic sheet is arranged on the front surface of the phosphorescent plate and also arranged between the phosphorescent plate and the substrate, so that the front and back surfaces of the phosphorescent plate are surrounded while surrounding the phosphorescent plate. A thermoplastic sheet layer is formed so as to be sandwiched between the two. Therefore, the weather resistance can be further improved. In addition, since the phosphorescent plate is more closely attached to the substrate, the phosphorescent plate can be prevented from being displaced between the substrate and the protective plate, so that the aesthetic appearance can be maintained even during decompression of the atmosphere during production or rough handling during installation. Can be maintained.

  The configuration of the sign board according to the embodiment of the present invention will be described with reference to FIG. 1 and FIG. 1A and 1B are diagrams for explaining a state in which a point mark, which is an example of a sign plate according to an embodiment of the present invention, is attached to a column, FIG. 1A is a front view, and FIG. 1B is a side view. . FIG. 2 is a horizontal cross-sectional view of a point sign that is an example of a sign board according to an embodiment of the present invention.

  As shown in FIG. 1 (A) and FIG. 1 (B), a point marker 1 is installed near a road such as an expressway or a general road, and indicates a distance from a reference starting point. The point marker 1 is attached so that the upper end and the lower end of the point marker 1 are sandwiched by the mounting bracket 11 at the upper part of the pillar 10 made of angle iron standing on the ground or the like. Since the mounting mark 11 is attached so as to sandwich the point marker 1, for example, even when there is a guard rail on the side of the column 10, the center of the point marker 1 can be shifted from the column 10 in the opposite direction of the guard rail. Is possible.

  As shown in FIG. 1A and FIG. 2, the point marker 1 includes a substrate 2, a phosphorescent plate 3, a protective plate 4, a marking portion 5, and an adhesive portion 6.

  The substrate 2 is made of acrylic, and is a rectangular hard plate having a length of about 160 mm, a width of about 170 mm, and a thickness of about 2 mm. The substrate 2 is preferably white so that the light from the phosphorescent plate 3 can be easily reflected. The substrate 2 is preferably a cast plate because it is difficult to deform against heat. In the present embodiment, the substrate 2 is made of acrylic, but may be an iron plate, an aluminum plate, or a stainless steel plate that has been subjected to rust prevention.

  The phosphorescent plate 3 is a rectangular plate containing a phosphorescent material (not shown) of 100 μm to 200 μm, having a length of 140 mm, a width of 150 mm, and a thickness of about 0.6 mm. A phosphorescent material is a granular material in which aluminum oxide is used as a base material and other oxides and rare earth elements are combined. It absorbs light energy from natural light, artificial light, etc., and emits light as light. It has afterglow characteristics that continue to emit light even after it disappears. The phosphorescent plate 3 is formed by laminating a sheet of this granular phosphorescent material in a sheet form with a resin or an ink agent. Therefore, the phosphorescent plate 3 is an uneven surface with a granular phosphorescent material. The size of the phosphorescent plate 3 is set to be smaller than the substrate 2 so that the peripheral portion of the phosphorescent plate 3 becomes the bonding surface 2b between the substrate 2 and the protective plate 4 when bonded to the substrate 2. The phosphorescent material can be used not only in a granular form but also in a liquid form as long as it has afterglow and can form the phosphorescent plate 3 by being applied or adhered to a plate-like member or the like.

  The protective plate 4 is provided on the front surface of the phosphorescent plate 3 to protect the phosphorescent plate 3 from sand, stones, etc. that the vehicle has bounced, and is almost equal so that no protruding portion is formed when it is bonded to the substrate 2. It is a transparent acrylic hard plate formed in a shape and having a thickness of about 2 mm. The protective plate 4 is preferably a cast plate because it is difficult to deform against heat. Since the surface of the protective plate 4 is a plane close to a mirror surface, the protective plate 4 is less likely to adhere as compared with the phosphorescent plate 3 which is an uneven surface that is easily deposited as it is sand or dust. However, if the light emitted from the headlight is reflected on the surface of the protective plate 4 so that the point mark 1 is difficult to see, the matte finish (matte) may be used in which the surface of the protective plate 4 is rough. Since the point marker 1 is installed outdoors, it is exposed to ultraviolet rays. Since the ultraviolet rays cause the substrate 2 and the bonding portion 6 to yellow with the passage of time, it is desirable that the protective plate 4 does not transmit ultraviolet rays having a wavelength shorter than that required for the phosphorescent material to remain afterglow.

  The marking portion 5 is an image of the adhesive sheet that has been retroreflected and processed into numerals 5a, characters 5b, and symbols 5c. By using an adhesive sheet that has been retroreflected as the marking unit 5, when the vehicle is traveling at night and the light from the headlight is not irradiated, the marking unit 5 emits light from the background phosphorescent plate 3. When the light comes from the headlight and is irradiated with light from the headlight, the marking portion 5 reflects the light from the headlight, so that the numbers, characters, and symbols of the marking portion 5 are in a light-emitting state and are easily recognized. Since the number 5a of the marking unit 5 is a 7-segment font, if the basic “888” is prepared, it can be adapted to any point marker.

  The bonding portion 6 is interposed between the phosphorescent plate 3 and the protective plate 4, is an upper surface bonding portion 6 a that bonds the phosphorescent plate 3 and the protective plate 4, the periphery of the phosphorescent plate 3, and the substrate 2 and the protective plate 4 is a peripheral adhesive portion 6b that bonds the substrate 2 and the protective plate 4 with each other, and a lower surface adhesive portion that bonds the substrate 2 and the phosphorescent plate 3 with each other. 6c. That is, the bonding portion 6 is formed so as to cover the entire phosphorescent plate 3 with the upper surface bonding portion 6a, the lower surface bonding portion 6c, and the surrounding bonding portion 6b. The adhesive portion 6 is formed of a thermoplastic sheet called an intermediate film having adhesiveness when heated and softened. For example, Mersen G (registered trademark) manufactured by Tosoh Corporation can be used.

  A method for manufacturing a sign plate according to an embodiment of the present invention configured as described above will be described with reference to FIGS. FIG. 3 is a diagram for explaining a method of manufacturing a sign plate according to the embodiment of the present invention.

  As shown in FIG. 3, the formation process which prepares the board | substrate 2, the phosphorescent board 3, the protection board 4, the upper thermoplastic sheet 7, and the lower thermoplastic sheet 8 first is performed. In the forming process, a white cast plate having a thickness of about 2 mm is first cut into a substrate 2 having a length of 160 mm and a width of 170 mm. Next, the transparent cast plate is cut into a size approximately equal to that of the substrate 2 to form the protective plate 4.

  The phosphorescent plate 3 first applies an ultraviolet curing, heat curing, or spontaneous curing ink agent to the release sheet, descends the phosphorescent material, and cures to form a layer containing the phosphorescent material of about 0.2 mm. This operation is repeated three times, and a layer containing a phosphorescent material is laminated to increase the thickness. This number of times can be appropriately determined depending on the afterglow time and the like. If necessary, the laminated surface can be coated to make the surface uneven surface flat. And the peeling sheet of the laminated | stacked lower surface is peeled, and it cut | disconnects to a predetermined | prescribed magnitude | size, and forms the phosphorescent plate 3. FIG. In the present embodiment, the predetermined size means that the phosphorescent plate 3 is made smaller by about 1 cm from the periphery of the substrate 2 to the upper and lower portions and the left and right portions in order to bond the substrate 2 and the protective plate 4 at the connection portion 6. However, if the adhesive surface 2b is about 5 mm or more from the periphery of the substrate 2, the adhesive strength and water resistance between the substrate 2 and the protective plate 4 can be ensured. Therefore, the phosphorescent plate 3 can be determined as appropriate within an area that is smaller than the periphery of the substrate 2 by about 5 mm or more.

  The upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 cut the thermoplastic sheet into a size approximately equal to or slightly larger than the size of the substrate 2 or the protection plate 4.

  Next, the arrangement | positioning process which arrange | positions the board | substrate 2, the phosphorescent board 3, the protection board 4, the upper thermoplastic sheet 7, and the lower thermoplastic sheet 8 is performed. In the arranging step, the lower thermoplastic sheet 8 is arranged on the substrate 2 so that the adhesive surface 2b is exposed, the phosphorescent plate 3 is arranged according to the position of the lower thermoplastic sheet 8, and the phosphorescent plate 3 is arranged according to the position of the phosphorescent plate 3. The upper thermoplastic sheet 7 is disposed, and the protective plate 4 is disposed on the upper surface of the thermoplastic sheet 8 so as to correspond to the substrate 2.

  Next, the adhesion process which sticks each is performed. In the bonding step, heating is performed in a heating furnace in a state where the pressure is reduced by a decompressor. By reducing the atmosphere, air between the substrate 2 and the phosphorescent plate 3 and between the phosphorescent plate 3 and the protective plate 4 can be removed, so that the upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 are softened. Then, bubbles can be prevented from being accumulated when cured. If bubble accumulation occurs, when this point marker 1 is installed, the bubble accumulation thermally expands as the temperature rises, causing peeling of the protective plate 4 or the substrate 2 and reducing durability. End up. Therefore, the occurrence of air bubble accumulation can be prevented, so that the aesthetics can be improved and the durability can be improved.

  The heating of the substrate 2 and the protective plate 4 is performed in the range of 90 ° C. to 100 ° C., but preferably 100 ° C. If the temperature is less than 90 ° C., the upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 are not sufficiently softened to form the adhesive portion 6. Further, if the temperature is higher than 100 ° C., gas may be generated from the ink agent used when forming the phosphorescent plate 3 to form bubbles and remain between the phosphorescent plate 3 and the protective plate 4. . Even when the substrate 2 and the protection plate 4 are heated at a high temperature of 100 ° C., the substrate 2 and the protection plate 4 are formed of cast plates, and therefore hardly deform.

  By reducing the atmosphere, the degree of adhesion between the substrate 2 and the protective plate 4 increases. As the degree of adhesion between the substrate 2 and the protective plate 4 increases, the space between the phosphorescent plate 3 and the protective plate 2 and the space between the phosphorescent plate 3 and the substrate 2 become narrower, so that the upper thermoplastic sheet 7 softened by heating is formed. The phosphorescent plate 3 and the protective plate 4 are brought into close contact with each other, and the lower thermoplastic sheet 8 brings the phosphorescent plate 3 and the substrate 4 into close contact with each other. Then, excess portions of the softened upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 move toward the adhesive surface 2 b around the phosphorescent plate 3. Excess portions of the upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 are filled into the peripheral portion of the phosphorescent plate 2 sandwiched between the substrate 2 and the protective plate 4 as it moves to the periphery of the phosphorescent plate 3. When the upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 are cured, the portion of the upper thermoplastic sheet 7 between the phosphorescent plate 3 and the protective plate 4 becomes the upper surface adhesive portion 6a, and the phosphorescent plate 3 and the substrate 2 The portion of the lower thermoplastic sheet 8 in the middle becomes the lower surface adhesive portion 6c, and the peripheral portion of the phosphorescent plate 3 becomes the peripheral adhesive portion 6b (see FIG. 2). Thus, since the excess portions of the upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 move due to deformation due to softening, when the upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 are cured, the upper surface adhesive portion 6a and The phosphorescent plate 3 can be reliably sealed by the lower surface bonding portion 6c and the surrounding bonding portion 6b. Therefore, even if the phosphorescent plate 3 is thick and the space between the substrate 2 and the protective plate 4 is open, it is possible to prevent moisture from entering. Thus, even if the substrate 2 and the protective plate 4 are bonded together under reduced pressure, they are not deformed because a hard acrylic plate is used.

  For example, it is assumed that an adhesive is applied to the substrate 2 instead of the lower thermoplastic sheet 8 and an adhesive is applied instead of the upper thermoplastic sheet 7. In that case, the protective plate 4 is disposed on the phosphorescent plate 3 to which the adhesive is applied, and the substrate 2 and the protective plate 4 are pressed. Then, between the phosphorescent plate 3 and the protective plate 4. Air remains and bubble accumulation occurs. When the surroundings are depressurized in order to suppress the occurrence of bubble accumulation, the applied adhesive flows and is biased to the surroundings. In the point marker 1 of the present embodiment, instead of the adhesive, since a thermoplastic sheet having adhesiveness when softened and cured is used, only air is discharged without flowing even if the surroundings are depressurized. Therefore, it is possible to bond without leaving a bubble pool when bonded.

  The excess upper thermoplastic sheet 7 and the lower thermoplastic sheet 8 that protrude outward from between the substrate 2 and the protective plate 4 are scraped and removed. Finally, a marking portion 5 having a predetermined marking content is attached to the front surface of the protection plate 4 to obtain a point marker 1.

  In the present embodiment, the inner surface of each of the substrate 2 and the protection plate 4 sandwiching the phosphorescent plate 3 is formed in a flat plate shape. For example, the outer shape of the phosphorescent plate 3 is provided on either the substrate 2 or the protection plate 4. It is also conceivable to provide a concave portion having the shape of the above, accommodate the phosphorescent plate 3 in the concave portion, cover the thermoplastic sheet and heat. However, if the phosphorescent plate 3 is accommodated in the recess and heated, the phosphorescent plate 3 may expand and bend in the recess. Further, it is necessary to process the substrate 2 or the protective plate 4 in order to provide the recess, and an extra step is performed, which increases costs. In the present embodiment, since the inner surfaces of the substrate 3 and the protection plate 4 are flat, it can be easily prepared by cutting the plate into the size of the substrate 2 or the protection plate 4.

  Further, by adjusting the size of the upper thermoplastic sheet 7 or the lower thermoplastic sheet 8 to be smaller than that of the substrate 2 and the protective plate 4, the peripheral adhesive portion 6 b of the adhesive portion 6 can be changed to the peripheral surface of the substrate 2 and the protective plate 4. The gap can be secured between the substrate 2 and the protective plate 4. In that case, the weather resistance can be further improved by filling the gap between the substrate 2 and the protective plate 4 with a sealing material having a high affinity for acrylic.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, For example, the marking part 5 can also be provided in the inner surface of the protection board 4. FIG. In such a case, the reflective surface of the marking part is attached to the inner side surface of the protective plate 4 via an adhesive, and there is a concern about a decrease in the degree of reflection of the marking part. Since it is not exposed to dust, it can be a sign plate with further improved weather resistance. Moreover, the marking part formed with the adhesive sheet which does not have recursiveness may be affixed on the inner surface of the protective plate 4, and the design to mark may be printed on the front side of the phosphorescent plate 3 directly. By doing so, it is possible to ensure visibility since the phosphorescent plate 3 remains afterglow and the marking portion appears to be shaded and raised even at night while improving weather resistance.

  Moreover, although it was set as the rectangular shape in the point marker 1 of this Embodiment, if a surrounding adhesion part is provided around the phosphorescent plate 3, it can also be set as a triangular shape, a polygonal shape, and an unusual shape.

  Since the signboard of the present invention can improve the afterglow performance while ensuring weather resistance, it can be used for guideboards for evacuation guidance, gaze guidance signs, signs, etc. Is also applicable. Moreover, it is also possible to apply to a guide board or an evacuation guide sign installed indoors. In that case, the contents of the indication can be visually recognized even during a power failure or after the lights are turned off.

It is a figure explaining the state which attached the point mark which is an example of the sign board which concerns on embodiment of this invention to the support | pillar, (A) is a front view, (B) is a side view. It is a horizontal sectional view of a point marker which is an example of a sign board concerning an embodiment of the invention. It is a figure explaining the manufacturing method of the sign board which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Point mark 2 Board | substrate 2b Adhesive surface 3 Phosphorescent plate 4 Protection board 5 Marking part 5a Number 5b Character 5c Symbol 6 Adhesive part 6a Upper surface adhesive part 6b Surrounding adhesive part 6c Lower surface adhesive part 7 Upper thermoplastic sheet 8 Lower thermoplastic sheet 10 Post 11 Mounting bracket

Claims (5)

In the marking plate provided with a phosphorescent plate containing a phosphorescent material having afterglow properties on the substrate, and provided with a protective plate on the front side of the phosphorescent plate,
Adhering the phosphorescent plate and the protective plate interposed between the phosphorescent plate and the protective plate, and surrounding the phosphorescent plate and interposed between the substrate and the protective plate, A sign plate having a bonding portion for bonding a substrate and the protective plate.   The sign board according to claim 1, wherein the adhesive portion is also provided between the phosphorescent plate and the substrate.   The signboard according to claim 1 or 2, wherein the adhesive portion is formed of a thermoplastic sheet having adhesiveness when heated and softened. In the manufacturing method of the sign board which provided the phosphorescent board containing the phosphorescent material which has afterglow nature in the substrate, and provided the protection board in the front side of the phosphorescent board,
Forming the phosphorescent plate in such a size that when the substrate and the phosphorescent plate are bonded together, the peripheral portion of the phosphorescent plate is an adhesive surface between the substrate and the protective plate;
The phosphorescent plate is disposed so that the adhesive surface of the substrate is exposed, and a thermoplastic sheet having adhesiveness when softened and cured is disposed on the front surface of the phosphorescent plate, and the protective plate is further disposed on the substrate. An arrangement step of arranging on the upper surface of the thermoplastic sheet correspondingly;
Depressurizing and heating the atmosphere, deforming the thermoplastic sheet, filling the peripheral portion of the phosphorescent plate sandwiched between the substrate and the protective plate, the substrate, the phosphorescent plate and the protective plate A method for producing a sign board, comprising a bonding step of bonding.   5. The method for manufacturing a sign board according to claim 4, wherein, in the arranging step, the thermoplastic sheet is arranged on a front surface of the phosphorescent plate and is also arranged between the phosphorescent plate and the substrate.

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