JP2017207578A - Illumination type display plate and method for manufacturing illumination type display plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination type display plate that can prevent characters and diagrams from being visually recognized from a surface of an illumination type display plate while the display plate is not irradiated with light.SOLUTION: There is provided an illumination type display plate 1 comprising; a translucent substrate 4; a plating layer 6 that covers one face of the substrate; and a translucent colored layer 8 that covers the plating layer, wherein the plating layer 6 includes a display part 61 from which the plating layer 6 is removed, and boundary parts 9 consisting of a plurality of concave parts 62 from which the plating layer 6 in the peripheral parts of the display part 61 are removed in an arc shape in plan view; when light irradiation is performed from the other face of the substrate 2, the surface of the colored layer 8 emits light in the shape of the display part 61.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an illumination type display board that illuminates light from the back surface to make characters, figures, and the like appear on the surface, and a method for manufacturing the illumination type display board.

  The illuminated display board is a display board where characters, figures, etc. that could not be visually recognized before being irradiated by light from the back surface, are used on the interior of automobiles. is there.

  A conventional illuminated display board 10 shown in FIG. 9 has an underlayer 50, a plating layer 60, and a protective layer 70 formed in this order on one surface side of a translucent substrate 40, and then a plating layer 60 is formed by laser. A part of the protective layer 70 is removed, a display portion 601 that is a character, a figure, or the like is formed on these layers, and a colored layer 80 is further formed on one surface side.

  Such an illumination type display board 10 can display the character, figure, etc. corresponding to the display part 601 on the surface by irradiating light from the light source L installed in the back side, and these characters, figure are It has an aesthetic decoration effect that the display mode of characters and figures can be changed by changing the color and intensity of light.

  By the way, in the manufacturing method of the conventional illumination type display board 10, since the plating layer 60 was removed by the continuously irradiated laser, adjustment of an output is difficult, and the display part 601 is formed by removing only the plating layer 60. However, it was necessary to remove the plating layer 60 together with the protective layer 70 after forming the protective layer 70. Therefore, the level difference 602 generated by the removal of these layers is large, and even if the colored layer 80 is formed on the surface, a visible level difference 81 is formed on the surface of the colored layer 80.

  And since the level | step difference 81 is visually recognizable, the boundary line of the display part 601 and its peripheral part can be visually recognized even at the time of the non-lighting in which the illumination type display board 10 formed by the conventional manufacturing method is not irradiating light. Therefore, the characters and graphics corresponding to the display unit 601 when not illuminated cannot be sufficiently concealed.

  In addition, when the outline of the display unit 601 is a straight line, the boundary line between the display unit 601 and its peripheral part is more easily visible, which is a cause of insufficient hiding.

  Thus, since the conventional illuminated display board 10 has not sufficiently concealed characters and figures corresponding to the display unit 601 when not illuminated, the aesthetic effect of the illuminated display board can be sufficiently exhibited. There wasn't.

  Accordingly, the present invention has been made in view of the above-described problems, and an illuminated display board and an illuminated display that can prevent characters, figures, and the like corresponding to the display unit 601 from being visually recognized from the surface when not illuminated. It aims at providing the manufacturing method of a board.

  The present invention includes a translucent base material, a plating layer covering one surface side of the base material, and a translucent colored layer covering the plating layer, and the plating layer includes a display unit from which the plating layer is removed, and And the plating layer on the peripheral edge of the display part has a boundary part composed of a plurality of concave parts removed in an arc shape in plan view, and when the light is irradiated from the other surface side of the substrate, the surface of the colored layer is It is an illuminated display board that emits light in a shape.

  Since the boundary part is formed by a plurality of concave parts that are arc-shaped in plan view, the boundary line between the display part and its peripheral part can be obscured, and it corresponds to the display part when light from the light source is not illuminated It is possible to effectively prevent the characters, figures and the like to be visually recognized. On the other hand, at the time of illumination, the light from the light source passes through the substrate, the display unit, and the colored layer, so that the display unit emits light in the color of the colored layer. Therefore, according to the present invention, it is possible to reliably hide characters and figures corresponding to the display unit when not illuminated, while exhibiting the decorative property that the display unit illuminates when illuminated, and nothing can be seen when not illuminated. Therefore, it is possible to realize an unexpectedly illuminated display panel in which the display unit suddenly appears during illumination.

  In the said invention, the diameter of a recessed part can be 0.06 mm-0.12 mm, and the distance between adjacent recessed parts can be 0.016 mm-0.04 mm.

  If the diameter of the concave portion at the boundary is too large or the distance between the concave portions is too large, the outline of the display portion becomes rough and affects the appearance of displayed characters and figures, but the diameter of the concave portion is 0.12 mm. If the distance between the adjacent concave portions is 0.04 mm or less, the occurrence of such a problem can be prevented, and the appearance of characters and figures corresponding to the display portion during illumination can be kept good. . Further, when the diameter of the concave portion is 0.06 mm or more and the distance between adjacent concave portions is 0.016 mm or more, the boundary portion is not recognized as a straight line when not illuminated. This makes it possible to obscure the boundary line between the display unit and its peripheral portion, and effectively prevents the characters and figures corresponding to the display unit from being visually recognized from the surface of the illuminated display board when not illuminated. be able to.

  In the present invention, the thickness of the concave portion can be 1 μm or less.

  When the thickness of the recess is sufficiently thin, it is possible to prevent a step on the surface of the colored layer due to the step of the recess and prevent the outline of characters and figures from being visible, and display when light is not illuminated It is possible to more effectively conceal characters and graphics corresponding to the part.

  The present invention also includes a step of forming a plating layer on one side of a light-transmitting substrate, a part of the plating layer is removed by a laser to form a display portion, and a plating layer around the display portion is removed to form a plane. An illumination type display panel manufacturing method comprising: a step of forming a boundary portion including a plurality of concave portions having a circular arc shape; and a step of forming a plating layer, a display portion, and a translucent colored layer covering the boundary portion. It is characterized by that.

  Since the boundary portion is formed by a plurality of concave portions having an arc shape in plan view, the boundary line between the display portion and its peripheral portion can be obscured, and characters, figures, etc. corresponding to the display portion when not illuminated It is possible to manufacture an illumination type display panel that can effectively prevent the visual recognition from being visually recognized. The plurality of arc-shaped concave portions forming the edge of the display portion can be easily removed and formed by a laser.

  In the said invention, the diameter of a recessed part can be 0.06 mm-0.12 mm, and the distance between adjacent recessed parts can be 0.016 mm-0.04 mm.

  If the diameter of the concave portion at the boundary is too large or the distance between the concave portions is too large, the outline of the display portion becomes rough and affects the appearance of displayed characters and figures, but the diameter of the concave portion is 0.12 mm. If the distance between the adjacent concave portions is 0.04 mm or less, the occurrence of such a problem can be prevented, and the appearance of characters and figures corresponding to the display portion during illumination can be kept good. . Further, when the diameter of the concave portion is 0.06 mm or more and the distance between adjacent concave portions is 0.016 mm or more, the boundary portion is not recognized as a straight line when not illuminated. This makes it possible to obscure the boundary line between the display unit and its peripheral portion, and effectively prevents the characters and figures corresponding to the display unit from being visually recognized from the surface of the illuminated display board when not illuminated. be able to.

  In the present invention, the thickness of the concave portion can be 1 μm or less.

  When the thickness of the recess is sufficiently thin, it is possible to prevent a step on the surface of the colored layer due to the step of the recess and prevent the outline of characters, figures, etc. from being visible, and when light is not illuminated It is possible to more effectively conceal characters and graphics.

In the above invention, the laser may be a YAG laser or YVO ₄ laser of 15 kW to 120 kW.

  When the output of each laser is 15 kW or more, the plating layer can be sufficiently removed, and when the output is 120 kW or less, scorching of the base layer and the base material and removal of these layers can be achieved. Can be effectively prevented.

  According to the illuminated display panel of the present invention, it is possible to prevent characters, figures, and the like corresponding to the display unit from being visually recognized as the appearance of the illuminated display board when not illuminated, while characters, figures, and the like are illuminated. It is possible to realize an unexpected illumination decoration that appears suddenly while illuminating. As a result, the display of characters and figures on the illuminated display board can be made more impressive and aesthetically pleasing, and the aesthetic illumination decoration of places and equipment where the illuminated display board is used effectively It can be carried out.

It is a perspective view of the illumination type display board which concerns on one Embodiment of this invention, A division figure (A) is a perspective view before illumination, and a division figure (B) is a perspective view of the illuminated state. AA sectional drawing of FIG. 1 (B). FIG. 2 is an enlarged perspective view of the illuminated display board of FIG. 1, and FIG. 1A is an enlarged perspective view of the region R1 of FIG. 1B excluding the protective layer and the colored layer, and FIG. The expansion perspective view of field R2 of a figure (A). Sectional drawing which shows the 1st process of the manufacturing method of the illumination type display board of FIG. Sectional drawing which shows the 2nd process following FIG. Sectional drawing which shows the 3rd process following FIG. Sectional drawing which shows the 4th process following FIG. Sectional drawing which shows the 5th process following FIG. Sectional drawing which shows the illumination type display board by one prior art example.

  Hereinafter, an illumination type display board and a method for manufacturing the illumination type display board according to an embodiment of the present invention will be described with reference to the drawings.

Structure of illuminated display board [FIGS. 1 to 3]
As shown in FIG. 1, the illuminated display board 1 is a display board that is decorated such that a letter S emerges on the front surface 3 when light is irradiated from the back surface 2 thereof. In the present embodiment, the mode in which the character S emerges will be described as an example. However, the present invention is not limited to the character and may be a mode in which a figure, a pattern, or a combination thereof emerges.

  As shown in FIG. 2, the illuminated display panel 1 includes a base material 4, a base layer 5 that covers the surface of the base material 4, a plating layer 6 that covers the surface of the base layer 5, and a protective layer that covers the plating layer 6. 7 and a colored layer 8 covering the protective layer 7.

  The substrate 4 is a flat resin plate or resin film made of a translucent resin. As the material of the base material 4, a resin material such as PC / ABS (polycarbonate / acrylonitrile-butadiene-styrene), PC (polycarbonate), PMMA (polymethyl methacrylate), PET (polyethylene terephthalate) can be used. The substrate 4 may have a color as long as it is translucent, such as colored and transparent, milky white, etc., in addition to being colorless and transparent. The resin plate and the resin film used as the substrate 4 may be a hard resin that cannot be deformed or a soft resin that can be deformed. Further, the base material 4 is not limited to a flat plate shape, but may be a curved shape. In this way, various displays can be performed by making it possible to use the base material 4 having various shapes.

  The underlayer 5 is a light-transmitting layer and is a layer having a function of bringing the base material 4 and the plating layer 6 into close contact with each other. The thickness of the underlayer 5 is 7 μm to 20 μm. When the thickness of the underlayer 5 is less than 7 μm, the performance of closely attaching the plating layer 6 is deteriorated, and problems such as the occurrence of distortion skin and the influence of foreign matter are conspicuous. Will get worse. On the other hand, when the thickness of the base layer 5 exceeds 20 μm, problems such as thick coating portions and bubbles are generated, and the appearance of the illuminated display panel 1 is deteriorated.

  The plating layer 6 is a light-shielding layer formed by vapor deposition. As the plating layer 6, aluminum plating, tin plating, chromium plating, or the like can be used. The thickness of the plating layer 6 is 1 μm or less. This is because even if the thickness of the plating layer 6 is 1 μm or less, the light shielding property is sufficient, while the light shielding property is not improved even if the plating layer 6 is formed to a thickness exceeding 1 μm.

  The plating layer 6 is formed with a display portion 61 from which plating is removed in a shape corresponding to the letter S. In addition, the plating layer 6 is formed with a boundary portion 9 including a plurality of concave portions 62 obtained by removing the plating layer 6 at the peripheral edge of the display portion 61 in an arc shape in a plan view. The display part 61 and the boundary part 9 are formed by partially removing the plating layer 6 with a laser. When the thickness of the plating layer 6 is 1 μm or less, the thickness of the display portion 61 and the boundary portion 9 formed by removing the plating layer 6 is also 1 μm or less.

  The diameter W1 of the recess 62 is 0.06 mm to 0.12 mm. If the diameter W1 of the recess 62 is less than 0.06 mm, the boundary portion of the character S cannot be sufficiently concealed. Further, when the diameter W1 of the recess 62 exceeds 0.12 mm, the outline of the displayed letter S becomes rough and the aesthetic appearance is impaired.

  Further, between the adjacent recesses 62, a protruding portion 63 is formed which is a peripheral portion of the display unit 61 and is a portion that remains without being removed as the recess 62. The width W2 of the protruding portion 63 is the distance W2 between the adjacent concave portions 62.

  The distance W2 between the recesses 62 is 0.016 mm to 0.04 mm. If the distance W2 between the recesses 62 is less than 0.016 mm, the boundary portion of the character S cannot be sufficiently concealed. On the other hand, if the distance W2 exceeds 0.04 mm, the contour of the displayed character S becomes rough, and the aesthetic appearance is impaired.

  The protective layer 7 is a light-transmitting layer, and adheres to and protects the plating layer 6 and is a layer for further obscure the boundary line between the character S and the peripheral portion for concealing the character S. It is.

  The thickness of the protective layer 7 is 20 μm to 40 μm. If the thickness of the protective layer 7 is less than 20 μm, the character S cannot be sufficiently concealed. On the other hand, when the thickness of the protective layer 7 exceeds 40 μm, the appearance of the illuminated display panel 1 is deteriorated.

  The colored layer 8 is a light-transmitting layer, and is a layer that determines the color of the illuminated display panel 1 while interacting with the colors of the base layer 5 and the protective layer 7 that are the base.

  The thickness of the colored layer 8 is 5 μm to 30 μm. When the thickness of the colored layer 8 is less than 5 μm, the function as a coating is insufficient, and the texture and the like are deteriorated. On the other hand, when the thickness of the colored layer 8 exceeds 30 μm, the appearance of the illuminated display panel 1 is deteriorated or the translucency is deteriorated.

Effect of Illuminated Display Plate When the illuminated display plate 1 having the above-described configuration is irradiated with light from the light source L provided on the back surface 2 side, the surface of the colored layer 8 is displayed on the display unit by the light passing through the display unit 61. Light is emitted in the shape of 61 and the letter S is displayed. Such an illuminated display board 1 can be used for various purposes such as automobile interiors, house nameplates and interiors, advertising materials, signage materials, and interior ornaments.

  According to the illuminated display board 1 according to the present embodiment, the boundary portion 9 formed by the plurality of concave portions 62 having an arc shape in plan view is formed, so that the boundary line between the display portion 61 and its peripheral portion is unclear. The character S can be effectively concealed when not illuminated.

  Further, the level difference between the display part 61 and the boundary part 9 and its peripheral part affects the concealment of the display part 61 when the protective layer 7 and the colored layer 8 are further formed on the plating layer 6, and the level difference is large. A step is also formed on the colored layer 8 and cannot be concealed. However, if the step is 1 μm or less as in the illuminated display panel 1 according to the present embodiment, the step formed on the colored layer 8 is finer than 1 μm, and the character S is more effectively concealed. be able to.

Manufacturing method of illuminated display board [FIGS. 4 to 8]
Next, the manufacturing method of the illumination type display board 1 is demonstrated.

First, as shown in FIG. 4, the base layer 5 that covers the surface of the substrate 4 is formed. The underlayer 5 is formed by applying an acrylic paint on the surface of the substrate 4 by means of a brush, spatula, spray or the like, and then thermally drying at 70 ° C. to 80 ° C. for 30 minutes or more. ultraviolet is carried out by irradiating 800~1300mJ / cm ^2. The thickness of the base layer 5 thus formed is 7 μm to 20 μm.

  Next, as shown in FIG. 5, a plating layer 6 that covers the surface of the underlayer 5 is formed. Formation of the plating layer 6 is performed using vacuum deposition. The thickness of the plating layer 6 is 1 μm or less.

  Next, as shown in FIG. 6, the plating layer 6 is partially removed with a laser to form the display portion 61 and the boundary portion 9.

  The display part 61 and the boundary part 9 are formed by irradiating a YAG laser or a YVO4 laser. Of these, the boundary 9 is formed by intermittently irradiating a spot-like laser with a circular plan view so that the width W2 between the adjacent recesses 62 is 0.016 mm to 0.04 mm. The diameter of the laser is 0.06 mm to 0.12 mm corresponding to the diameter W1 between the recesses 62. The boundary portion 9 is formed as a concave portion 62 having an arc shape in plan view.

  The output of the laser is set to 15 kW to 120 kW. If the laser output is less than 15 kW, the plating layer 6 cannot be sufficiently removed, and the plating layer 6 remains on the display portion 61 and the boundary portion 9. On the other hand, if the output of the laser exceeds 120 kW, the underlayer 5 and the base material 4 are burnt, or even the underlayer 5 and the base material 4 are removed.

  The thickness of the display part 61 and the boundary part 9 is the thickness of the plating layer 6, that is, 1 μm or less.

Next, as shown in FIG. 7, the protective layer 7 that covers the plating layer 6, the display portion 61, and the boundary portion 9 is formed. The protective layer 7 is formed by applying an acrylic paint on the surface of the plating layer 6, the display part 61 and the boundary part 9 by means of a brush, spatula, spray or the like, and then forming a coating layer at 70 ° C. to 80 ° C. It is performed by irradiating with ultraviolet rays of 800 to 1300 mJ / cm ² while thermally drying for 30 minutes or more. The thickness of the protective layer 7 is 20 μm to 40 μm.

Next, as shown in FIG. 8, a colored layer 8 is formed so as to cover the surface of the protective layer 7. The colored layer 8 is formed by applying an acrylic paint on the surface of the protective layer 7 by means such as a brush, spatula, or spray, and then thermally drying at 70 ° C. to 80 ° C. for 30 minutes or more. ultraviolet is carried out by irradiating 800~1300mJ / cm ^2. The thickness of the colored layer 8 is 5 μm to 30 μm.

Effects of the Illuminated Display Board Manufacturing Method According to the above-described illuminated display board 1 manufacturing method, the boundary 9 has a diameter W1 of 0.06 mm to 0.12 mm, and a distance W2 between adjacent recesses of 0.016 mm. By forming the planar view of .about.0.04 mm by the arc-shaped recess 62, the boundary line between the character S and the peripheral portion thereof can be obscured.

  Further, by forming the step between the display portion 61 and the boundary portion 9 and the peripheral portion thereof to be 1 μm or less, the step formed on the colored layer 8 becomes finer than 1 μm, and the character S and The boundary line with the peripheral portion can be further obscured.

  Therefore, it is possible to effectively prevent the letter S from being visually recognized on the surface 3 of the illuminated display board 1 before light irradiation.

  Further, the plurality of arc-shaped concave portions 62 forming the boundary portion 9 can be easily removed and formed by a laser.

Modification of Embodiment The illuminated display panel 1 according to the above-described embodiment is formed on the surface by forming the base material 4 with a translucent resin and irradiating light from the light source L located below the base material 4. It was an aspect in which the letter S emerged. However, the present invention is not limited to this. As an aspect in which the base 4 is formed of a light-guiding material and light is emitted from the light source L located on the side of the base 4 to raise the character S on the surface. Also good.

  In the embodiment of the method for manufacturing the illumination type display panel 1 described above, an example in which the underlayer 5, the protective layer 7, and the colored layer 8 are formed by a coating layer has been shown. However, it is formed by printing such as screen printing or pot printing. You may comprise as a printed layer.

DESCRIPTION OF SYMBOLS 1 Illuminated display board 2 Back surface 3 Front surface 4 Base material 5 Base layer 6 Plating layer 7 Protective layer 8 Colored layer 9 Boundary part 61 Display part 62 Recessed part 63 Protruding part S Character

Claims (7)

A translucent substrate;
A plating layer covering one side of the substrate;
A translucent colored layer covering the plating layer,
The plating layer has a display part from which the plating layer has been removed, and a boundary part composed of a plurality of concave parts from which the plating layer at the peripheral part of the display part has been removed in an arc shape in plan view,
An illuminated display panel in which the surface of the colored layer emits light in the shape of the display section when light is irradiated from the other surface side of the substrate.   The illuminated display panel according to claim 1, wherein a diameter of the recess is 0.06 mm to 0.12 mm, and a distance between the adjacent recesses is 0.016 mm to 0.04 mm.   The illumination type display panel according to claim 1 or 2, wherein the concave portion has a thickness of 1 µm or less. Forming a plating layer on one side of the translucent substrate;
Removing a part of the plating layer with a laser to form a display part and removing the plating layer around the display part to form a boundary part composed of a plurality of concave parts having an arc shape in plan view;
And a step of forming a translucent colored layer that covers the plating layer, the display portion, and the boundary portion.   The diameter of the said recessed part is 0.06 mm-0.12 mm, The distance between the said adjacent recessed parts is formed in 0.016 mm-0.04 mm, The manufacturing method of the illumination type display board of Claim 4.   The manufacturing method of the illumination type display board of Claim 4 or 5 in which the thickness of the said recessed part is formed in 1 micrometer or less. The method for producing an illuminated display panel according to any one of claims 4 to 6, wherein the laser is a YAG laser or a YVO ₄ laser having an output of 15 kW to 120 kW.

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