JP5351440B2 - Decorative panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative panel which enables bright light display of a decorative pattern formed on a light-transmitting base material in an optional color, utilizing a light of the visible region, and is handsome and rich in variety. <P>SOLUTION: This decorative panel keeps the decorative pattern 12 constituted by arranging a plurality of reflective surfaces 121, exhibiting a recessed three-dimensional shape, on a light incident surface 11a of a substrate 11 and its opposite surface 11b, disposed along the opposite surface 11b to the substrate 11. Further, a light gradation is imparted to the decorative pattern 12 by generating a 1/f fluctuating gradation in the brightness of light reflected on the reflective surfaces 121. Further, the light 15c which is transmitted through the substrate 11, reaching a reflective film 16, is reflectively diffused, and this reflected light is reflected toward the reflective surface 121. Consequently, the decorative pattern 12 is highlighted and colored in dark and pale tones in compliance with the gradation of the light. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a decorative panel used for decoration of an instrument panel for a vehicle or decoration of a door surface of a furniture or a panel of a drawer, decoration of a surface of a mobile phone body, decoration of a surface of an electrical appliance, and the like. The present invention relates to a decorative panel in which a decorative pattern formed on a light-transmitting substrate can be brightly displayed with an arbitrary color using colored light in a visible region.

  2. Description of the Related Art Conventionally, a garnish that is mounted between rear combination lamps at the rear end of a passenger car is known as a decorative panel used for an automobile, for example (see Patent Document 1).

  This type of decorative panel includes a cover made of a transparent synthetic resin material such as acrylic and an attachment base material for attaching the cover to a car body of an automobile, and the outer surface of the cover is processed into a smooth surface. At the same time, a fine concavo-convex pattern (texture) is formed on the inner surface facing the mounting substrate. In addition, a concave spherical fisheye is formed on the surface of the mounting substrate opposite to the inner surface of the cover, and a silver metallic paint is applied to the concave spherical fisheye to form a metallic coating surface. Is formed.

In such a decorative panel, the light transmitted through the cover is complicatedly scattered by the fine uneven pattern (texture) on the inner surface of the cover, and when this scattered light is incident on the metallic coating surface of the mounting base, By the action of the concave mirror that comes from the fish-eye shape, the reflection disturbance of the incident light becomes an integrated reflected light, which can provide a decorative panel that can express the depth of depth with the effect of a Fresnel lens I have to.
JP-A-4-78632

  However, in such a conventional decorative panel, the metallic coating surface of the mounting substrate constituting the decorative panel is composed of a concave spherical concave mirror, and the incident light scattered by the concave / convex pattern of the cover is collected by this concave mirror. The reflected light is reflected as spot light having a diameter corresponding to the size of the concave mirror. Therefore, the brightness of the spot-like reflected light is almost uniform, and the spot light is reflected even if the viewpoint is changed with respect to the decorative panel. The brightness does not change. As a result, there has been a problem that the decorations of automobile interior parts such as instrument panels and door rims and decorations of electrical appliances are hardly changed and the appearance is low.

  The present invention has been made to solve the above-described conventional problems. The decorative pattern formed on the light-transmitting substrate can be displayed in a bright color with an arbitrary color using light in the visible region, and can be changed. It is an object of the present invention to provide a decorative panel capable of providing an optical decoration effect rich in appearance and capable of exerting an optical decoration effect that acts on the visual perception of a viewer and gives healing, relaxation and comfort.

In order to achieve the above object, the invention of claim 1 is a decorative panel, which is a colored transparent or colorless transparent or colored translucent substrate having a light incident surface on one surface in the thickness direction. A cover member provided on the back surface of the base material opposite to the light incident surface so as to cover the back surface through a space, and a decoration designed and formed on the back surface of the base material Provided on the surface of the cover member facing the back surface of the base material, and is colored in color by directing light transmitted through the base material from the light incident surface side toward at least the decorative pattern portion A reflective film that reflects as light, and the decorative pattern is continuously arranged in a two-dimensional direction at a random pitch along the back surface of the base material, and has a depth with respect to the light incident surface of the base material. Multiple concave three-dimensional shapes The three-dimensional reflecting surface is configured by an incident surface, and the incident light incident on the base material from the light incident surface is reflected toward the light incident surface, thereby irregularly adjusting the luminance of the reflected light. The reflective film is formed on a surface opposite to the back surface of the base material of the color film and the transparent film, and is configured to give light and darkness to the decorative pattern by giving a varying 1 / f fluctuation. The reflected light from the light incident surface side through the interface and the space between the reflective surface and the space, and the transmitted light reaching the reflective film according to the color film. In addition, the decorative pattern is configured to be colored by reflecting the color color toward the decorative pattern.

According to a second aspect of the present invention, in the decorative panel according to the first aspect, the plurality of reflecting surfaces are three- dimensionally selected from the group consisting of a triangular roof type, a trapezoidal roof type, a hemispherical roof type, and a hemispherical roof type. It characterized in that it caused a shape.

According to a third aspect of the present invention, in the decorative panel according to the first or second aspect, a translucent or transparent decorative layer having a decorative pattern is formed on the light incident surface of the substrate. It is characterized by.

According to the decorative panel of the present invention, it is arranged in a two-dimensional direction at a random pitch along the back surface that is the surface opposite to the light incident surface that is the surface of the substrate, and with respect to the light incident surface of the substrate. A decorative pattern is composed of a plurality of reflective surfaces having concave three-dimensional shapes with different depths, and 1 / f fluctuations that irregularly change the brightness of light reflected by the reflective surface are given to the decorative pattern. Light and darkness is generated, and furthermore, the decorative pattern is formed by reflecting the light that reaches the reflective film through the interface and space between the base material and each reflective surface and the space, and reflects it toward the decorative pattern by the reflective film. Since it is configured to be colored, the color of the decorative pattern on the substrate can be changed according to the viewing angle or light incident angle and diffracted light with respect to the viewer and the decorative panel, and the decorative pattern is changed by 1 / f fluctuation Rich looking Enables good optical decoration, to act on the vision of those who look at the same time, healing, can exhibit optical decorative effect of the relaxation and peacefulness.

  Moreover, according to the decorative panel of the present invention, since the color film is used for the reflective film, the color color can be expressed in the light reflected toward the decorative pattern by the reflective film, and the appearance of the decorative panel is further improved. Can be emphasized.

  In addition, according to the decorative panel of the present invention, since the decorative layer having a pattern is formed on the light incident surface of the base material, the reflection generated on the three-dimensional reflecting surface on the pattern of the decorative layer Irregularly changing light brightness and darkness due to light can be added, and a three-dimensional effect can be imparted to the decorative pattern, thereby providing a decorative panel with better appearance.

  Further, according to the decorative panel of the present invention, the appearance of the decorative panel can be emphasized in terms of color by molding the base material with a colored transparent material.

  Furthermore, according to the present invention, since the space is provided between the surface opposite to the light incident surface of the base material and the reflective film, the reflection and diffusion effect of light by the reflective film is enhanced, and the appearance of the decorative panel is improved. Can be further emphasized.

Next, an embodiment of a decorative panel according to the present invention will be described with reference to the drawings. The decorative panel of the present invention is not limited to the embodiment described below.
(Embodiment 1)
1 is a plan view of a decorative panel showing a first embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a base of the decorative panel according to the first embodiment. FIG. 4 is a partial enlarged perspective view showing an example when the reflecting surface formed on the material is viewed from the back surface (corresponding to the surface opposite to the light incident surface) of the substrate. Sectional drawing which expanded and showed a part of panel for decoration including the base material in a location in alignment and a reflection film, and a cover member, FIG. 5 is a base material in the location in alignment with the line 5-5 in FIG. Sectional drawing which expanded and showed a part of decorative panel including a member, FIG. 6: is sectional drawing which shows typically the effect | action with respect to the light of the reflective surface of a decorative panel in this Embodiment 1, and a reflective film. .

  The decorative panel 10 shown in the first embodiment includes a base material 11, a cover member 13, a reflective film 16, and the like as shown in FIGS.

  The base material 11 is made of a transparent synthetic resin material such as acrylic or polycarbonate, or a plate material that is transparent and gently curved in a convex arc shape such as glass. The base material 11 has a light incident surface (front surface) 11a corresponding to a gently curved surface of the plate material, and a surface (back surface) 11b opposite to the light incident surface 11a is, for example, a decoration formed by designing a morpho butterfly. A pattern 12 is formed.

  The material used for forming the base material 11 is not limited to a colorless and transparent synthetic resin material or glass, but can be formed from a colored transparent or colored translucent material.

  The cover member 13 is provided on the base material 11 so as to cover the surface 11b opposite to the light incident surface 11a. The cover member 13 is made of an opaque resin plate and is formed along the periphery of the base material 11. The peripheral portion of the cover member 13 is fitted into the portion 111 and can be fixed by a locking mechanism (not shown) provided in the engaging step portion 111 or an adhesive. Further, a space 14 of 0.2 mm or more and 10 mm or less is formed between the substrate 11 and the reflective film 16 while being fixed to the surface 11 b opposite to the light incident surface 11 a of the substrate 11.

  The illumination light 15 of the decorative panel 10 is light from various illumination lamps or natural light such as sunlight.

  The reflective film 16 is laminated and adhered to the upper surface of the cover member 13, that is, the surface facing the back surface 11 b of the base material 11 including the region where the decorative pattern 12 is formed.

  The reflection film 16 reflects and diffuses the light that is transmitted through the base material 11 and incident on the reflection film 16 and reflects it toward the surface 11b opposite to the light incident surface 11a including the portion of the decorative pattern 12. A type in which silver is vapor-deposited on a resin film such as a polyethylene terephthalate (PET) film or a laminate of a metal foil such as aluminum is used. The resin film is a colored transparent color film colored in various colors such as red, blue, and green.

  As shown in FIGS. 2 and 3, the decorative pattern 12 has a plurality of reflections having a triangular roof type three-dimensional shape on the surface 11 b (the back surface of the substrate 11) opposite to the light incident surface 11 a of the substrate 11. The surface 121 is formed by arranging at an arbitrary random pitch along the opposite surface 11b. Thereby, when the reflective surface 121 is seen from the light incident surface 11a side of the base material 11, the interface 121a with the space 14 of the reflective surface 121 exhibits a concave three-dimensional shape.

  Such a reflective surface 121 reflects or transmits incident light incident on the base material 11 from the light incident surface 11a side, and causes the brightness of the reflected light to produce 1 / f fluctuation brightness and darkness. It is for adding light to darkness.

  Next, a specific example in the case where light and darkness that irregularly changes in the brightness and brightness of the reflected light generated on the reflecting surface 121 will be described with reference to FIGS.

  As shown in FIG. 3, the reflecting surface 121 has a triangular roof-shaped basic shape, and is configured by adding a concave three-dimensional shape necessary for causing 1 / f fluctuation to the basic shape. The concave reflecting surface 121 causes the brightness due to the reflection of the interface 121a with the space 14 to light and dark change irregularly similar to the sunbeams or the flow of water in the creek. It is determined from the 1 / f fluctuation function f (x).

That, 1 / f fluctuation function concave reflecting surface 121 which is determined by f (x), a plurality of sine curves of different frequencies: appropriate coefficient ⁽² i x Frequency) ² -i ^{(2 -i:} amplitude ( It becomes a shape added by applying strength)). When this is represented in a graph, a curve 711 shown in FIG. 7 is obtained.

  Reference numeral 712 indicates a plurality of sine curves having different frequencies. Also, 1 / f represents an expression in which the strength of the frequency component that determines the 1 / f fluctuation function f (x), that is, the amplitude is inversely proportional to the frequency f.

  As shown in FIGS. 3 to 5, the reflection surface 121 is continuously arranged in a row and column direction at a predetermined fixed interval L (0 <L <10 mm), and reflection of each row adjacent to each other is performed. The surface 121c is arranged with a shift of 1L in the column direction. The depth h of the concave reflecting surface 121 in the row and column directions is set in a range of 0 ≦ h ≦ 20 mm. The reflection angle θ1 of the concave reflecting surface 121 in the row and column directions is about 40 degrees when the material is polycarbonate, and the inclination angle θ2 of the concave reflecting surface 121 in the row and column directions is 0 ≦ θ2 ≦ 90 ° is set.

  In the decorative panel 10 shown in the first embodiment, when the light incident side surface (surface) 11a of the substrate 11 is irradiated with the illumination light 15, the illumination light 15 is as shown in FIG. The incident light 15a travels through the substrate 11 and reaches a plurality of reflecting surfaces 121 having a concave three-dimensional shape. A part of the incident light 15a reaching the reflecting surface 121 is a base material as indicated by an arrow 15b according to the shape of the interface 121a with the space 14 of the reflecting surface 121 determined by the 1 / f fluctuation function f (x). 11 is reflected toward the surface 11a side. Accordingly, the brightness of the reflected light 15b emitted from the surface 11a of the base material 11 causes a light / dark pattern that changes irregularly according to the 1 / f fluctuation function f (x), and chromatic aberration due to the shift of the light wavelength. Cause it to occur.

  Further, the light 15c transmitted through the interface 121a with the space 14 of the plurality of reflecting surfaces 121 and reaching the reflecting film 16 is reflected and diffused by the color-colored reflecting film 16, and is reflected on the reflecting surface 121 as color-colored reflected light. Reflected towards. Thereby, as shown in FIG. 1, the decorative pattern 12 formed by designing a morpho butterfly is colored and displayed on the surface of the decorative panel 10 in the color of the reflective film 16. That is, the decorative pattern 12 is a combination of light brightness that changes irregularly according to the interface 121 a with the space 14 of the reflecting surface 121 that constitutes the decorative pattern 12 and a light color that changes due to the reflected light from the reflecting film 16. It will be colored light and shade.

  According to the decorative panel 10 shown in the first embodiment as described above, by forming a plurality of reflecting surfaces 121 on the surface 11b opposite to the light incident surface 11a of the base material 11 along the opposite surface 11b. The decorative pattern 12 is formed, and the plurality of reflecting surfaces 121 are concave reflecting surfaces having a triangular roof-shaped three-dimensional shape, so that the brightness of the light reflected by the reflecting surface 121 is 1 / f fluctuation brightness / darkness. In addition, the decorative pattern 12 is brightened and darkened, and the light 15c that passes through the interfaces 121a of the plurality of reflecting surfaces 121 and reaches the reflecting film 16 is reflected and diffused by the reflecting film 16 toward the reflecting surface 121. In addition to reflecting, the colored color of the reflective film 16 is expressed in the light reflected toward the decorative pattern, and the decorative pattern is brightly displayed by a combination of the reflected light of the color and the light brightness. Since it is configured, the decorative pattern 12 formed on the base material 11 can be brightly displayed with a color that changes using light in the visible region, and the decorative pattern 12 has a rich appearance due to 1 / f fluctuation. Optical decoration is possible, and the colored colored reflected light is transmitted through the portion of the decorative pattern 12 to make the decorative pattern 12 stand out, and also acts on the visual perception of the viewer of the decorative panel 10 to heal. An optical decoration effect that gives relaxation and peace of mind can be exhibited.

  Further, according to the first embodiment, since the space 14 is formed between the reflective film 16 and the surface 11 b opposite to the light incident surface 11 a of the base material 11, the light is reflected and diffused by the reflective film 16. As a result, it is possible to enhance the natural glow effect that makes the viewer feel more comfortable with the reflected light, and to further enhance the appearance of the decorative panel 10.

Moreover, according to this Embodiment 1, the appearance of a decoration panel can be emphasized from the surface of a color by shape | molding the base material 11 with a colored transparent material.
(Embodiment 2)
Next, a second embodiment of the decorative panel according to the present invention will be described with reference to FIGS.

  FIG. 8 is a partial view showing an example when the reflecting surface formed on the base material of the decorative panel in Embodiment 2 of the present invention is viewed from the back surface (corresponding to the surface opposite to the light incident surface) of the base material. 9 is an enlarged perspective view, FIG. 9 is an enlarged sectional view of a part of the decorative panel including the base material, the reflective film, and the cover member at the position along line 9-9 in FIG. 8, and FIG. It is sectional drawing which expanded and showed a part of panel for decoration including the base material in a location along line 10-10, a reflective film, and a cover member.

  The decorative panel 20 shown in the second embodiment includes a base material 21, a cover member 23, a reflective film 26, and the like as shown in FIGS.

  As shown in FIG. 8, the substrate 21 is made of a transparent synthetic resin material such as acrylic or polycarbonate, or a transparent material such as glass. On the surface (back surface) 21b opposite to the light incident surface (front surface) 21a of the base material 21, a decorative pattern 22 formed by designing, for example, a morpho butterfly or the like is formed.

  The material used for forming the base material 21 is not limited to a colorless and transparent synthetic resin material or glass, but can be formed from a colored transparent or colored translucent material.

  Further, a space 24 of 0.2 mm or more and 10 mm or less is formed between the surface 21 b opposite to the light incident surface 21 a of the substrate 21 and the reflective film 26.

  The illumination light 15 of the decorative panel 20 is light from various illumination lamps or natural light such as sunlight.

  The reflection film 26 is laminated and adhered to the upper surface of the cover member 23, that is, the surface facing the surface 21 b opposite to the light incident surface 21 a of the base material 21 including the region where the decorative pattern 22 is formed.

  The reflection film 26 reflects and diffuses the light that is transmitted through the base material 21 and incident on the reflection film 26 and reflects it toward the surface 21b opposite to the light incident surface 21a including the decorative pattern 22 portion. A type in which silver is vapor-deposited on a resin film such as a polyethylene terephthalate (PET) film or a laminate of a metal foil such as aluminum is used. The resin film is a colored transparent color film colored in various colors such as red, blue, and green.

  As shown in FIGS. 8 to 10, the decorative pattern 22 has a plurality of reflective surfaces 221 having a triangular roof type three-dimensional shape on the opposite surface 21 b on the surface 21 b opposite to the light incident surface 21 a of the base material 21. It is configured by forming an array at an arbitrary random pitch. Thereby, when the reflective surface 221 is seen from the light incident surface 21a side of the base material 21, the interface 221a with the space 24 of the reflective surface 221 exhibits a concave three-dimensional shape.

  Such a reflection surface 221 reflects or transmits the incident light incident on the base material 21 from the light incident surface 21a side, and causes the brightness of the reflected light to produce 1 / f fluctuation brightness and darkness. It is for adding light to darkness.

  Next, a specific example in the case where light and darkness that irregularly changes in the brightness and brightness of the reflected light generated by the three-dimensional shape reflection unit 221 will be described with reference to FIGS. 9 and 10.

  As shown in FIG. 9, the three-dimensional reflecting portion 221 has a trapezoidal roof basic shape, and imparts 1 / f fluctuation to the basic shape, thereby forming a concave shape as shown in FIGS. 8 to 10. It is comprised from the concave reflective surface 221 continuous in the two-dimensional direction shape | molded by the three-dimensional shape which exhibits this trapezoidal roof type | mold. The concave reflecting surface 221 causes the brightness due to the reflection to cause irregularity of light and darkness similar to the sunbeams or the flow of water in the creek, and the shape thereof is 1 / f shown in the equation 1 above. It is determined from the fluctuation function f (x).

That, 1 / f fluctuation function f concave reflecting surface 221 which is determined by the (x) is a plurality of sine curves of different frequencies: appropriate coefficient ⁽² i x Frequency) ² -i ^{(2 -i:} amplitude) It becomes the shape which added by adding.

  The concave reflecting surfaces 221 having the three-dimensional shape are continuously arranged in the row and column directions at a predetermined fixed interval L (0 <L <10 mm), as shown in FIGS. The reflective surfaces 221c of each row adjacent to each other are arranged with a shift of 1L in the column direction. The depth h of the concave reflecting surface 221 in the row and column directions is set in a range of 0 ≦ h ≦ 20 mm. The reflection angle θ1 of the concave reflection surface 221 in the row and column directions is about 40 degrees when the material is polycarbonate, and the inclination angle θ2 of the concave reflection surface 221 is in the range of 0 ≦ θ2 ≦ 90 °. Set to

  In the decorative panel 20 shown in the second embodiment, when the light incident surface 21a of the base material 21 is irradiated with the illumination light 15, the illumination light 15 is shown by the arrows in FIGS. It becomes the incident light 15a and travels through the substrate 21 to reach a plurality of reflecting surfaces 221 having a concave three-dimensional shape. A part of the incident light 15a reaching the reflecting surface 221 is a base material as indicated by an arrow 15b according to the shape of the interface 221a with the space 24 of the reflecting surface 221 determined by the 1 / f fluctuation function f (x). 21 is reflected toward the light incident surface 21a side. Accordingly, the brightness of the reflected light 15b emitted from the light incident surface 21a of the base material 21 causes a light / dark pattern that irregularly changes in accordance with the 1 / f fluctuation function f (x), and also due to the shift of the light wavelength. Causes chromatic aberration.

  Further, the light 15c transmitted through the interface 221a with the space 24 of the plurality of reflecting surfaces 221 and reaching the reflecting film 26 is reflected and diffused by the color-colored reflecting film 26, and is reflected on the reflecting surface 221 as color-colored reflected light. Reflected towards. Thereby, on the surface of the decorative panel 20, a decorative pattern 22 formed by designing a morpho butterfly as shown in FIG. In other words, the decorative pattern 22 is a combination of light brightness and darkness that changes irregularly according to the interface 221a with the space 24 of the reflecting surface 221 that constitutes the decorative pattern 22 and the light color that changes due to the reflected light from the reflecting film 26. It will be colored light and shade.

  According to the decorative panel 20 shown in the second embodiment as described above, a plurality of reflecting surfaces 221 are arranged along the opposite surface 21b on the surface 21b opposite to the light incident surface 21a of the base material 21. By forming the decorative pattern 22 and making the plurality of reflecting surfaces 221 into a three-dimensional concave reflecting surface having a trapezoidal roof shape, the brightness of the light reflected by the reflecting surface 221 is 1 / f fluctuation brightness / darkness. In addition, the decorative pattern 22 is brightened and darkened, and the light 15c transmitted through the interfaces 221a of the plurality of reflecting surfaces 221 and reaching the reflecting film 26 is reflected and diffused by the reflecting film 26 and directed toward the reflecting surface 221. In addition to reflecting, the colored color of the reflective film 26 is expressed in the light reflected toward the decorative pattern, and the decorative pattern is brightly displayed by the combination of the reflected light of this color and the brightness of the light. Since it is configured, the decorative pattern 22 formed on the base material 21 can be colored in an arbitrary color using light in the visible region, and the display color of the decorative pattern 22 corresponds to the 1 / f fluctuation function f (x). Light and shade can be imparted. As a result, the decorative panel 20 can be provided with a good-looking optical decoration rich in changes due to 1 / f fluctuations, and also acts on the visual perception of the viewer of the decorative panel 20 to heal and relax. An optical decoration effect that gives comfort and peace can be exhibited.

  Further, according to the second embodiment, since the space 24 is formed between the reflection film 26 and the surface 21 b opposite to the light incident surface 21 a of the base material 21, the light is reflected and diffused by the reflection film 26. As a result, it is possible to enhance the natural glow effect that makes the viewer feel more comfortable with the reflected light, and to further enhance the appearance of the decorative panel.

Moreover, according to this Embodiment 2, the appearance of a decoration panel can be emphasized from the surface of a color by shape | molding the base material 21 with a colored transparent material.
(Embodiment 3)
Next, a third embodiment of the decorative panel according to the present invention will be described with reference to FIGS.

  FIG. 11 shows an example when a large number of reflective surfaces formed on the base material of the decorative panel according to Embodiment 3 of the present invention are viewed from the back surface (corresponding to the surface opposite to the light incident surface) of the base material. FIG. 12 is an enlarged perspective view of a part, FIG. 12 is an enlarged cross-sectional view of a part of a decorative panel including a base material, a reflective film, and a cover member along a line 12-12 in FIG. It is sectional drawing which expanded and showed a part of panel for decoration including the base material in a location along line 13-13 of FIG. 11, a reflective film, and a cover member.

  The decorative panel 30 shown in the third embodiment includes a base material 31, a cover member 33, a reflective film 36, and the like, as shown in FIGS.

  As shown in FIG. 11, the base material 31 is made of a transparent synthetic resin material such as acrylic or polycarbonate, or a transparent material such as glass. On the surface (back surface) 31b opposite to the light incident surface (front surface) 31a of the base material 31, a decorative pattern 32 formed by designing, for example, a morpho butterfly is formed.

  The material used for forming the base material 31 is not limited to a colorless and transparent synthetic resin material or glass, but can be formed from a colored transparent or colored translucent material.

  Further, a space 34 of 0.2 mm or more and 10 mm or less is formed between the surface 31 b opposite to the light incident surface 31 a of the substrate 31 and the reflective film 36.

  The illumination light 15 of the decorative panel 30 is light from various illumination lamps or natural light such as sunlight.

  The reflective film 36 is laminated and adhered to the upper surface of the cover member 33, that is, the surface facing the surface 31 b opposite to the light incident surface 31 a of the substrate 31 including the region where the decorative pattern 32 is formed.

  The reflection film 36 reflects and diffuses the light that is transmitted through the base material 31 and incident on the reflection film 36 and reflects it toward the surface 31b opposite to the light incident surface 31a including the portion of the decorative pattern 32. A type in which silver is vapor-deposited on a resin film such as a polyethylene terephthalate (PET) film or a laminate of a metal foil such as aluminum is used. The resin film is a colored transparent color film colored in various colors such as red, blue, and green.

  As shown in FIGS. 11 to 13, the decorative pattern 32 has a plurality of reflecting surfaces 321 having a hemispherical basic shape on the surface 31 b opposite to the light incident surface 31 a of the base material 31 along the opposite surface 31 b. It is configured by forming an array at an arbitrary pitch. Thereby, when the reflective surface 321 is viewed from the light incident surface 31a side of the base material 31, the interface 321a with the space 34 of the reflective surface 321 exhibits a concave three-dimensional shape.

  Such a reflective surface 321 reflects or transmits incident light incident on the base material 31 from the light incident surface 31a side, and causes the brightness of the reflected light to produce 1 / f fluctuations in brightness and darkness. It is for adding light to darkness.

  Next, a specific example in the case where light and darkness that irregularly changes in the brightness and brightness of the reflected light generated by the three-dimensional concave reflecting portion 321 will be described with reference to FIGS.

  The three-dimensional reflecting portion 321 has a hemispherical basic shape as shown in FIG. 11 and imparts 1 / f fluctuation to the basic shape, thereby forming a concave shape as shown in FIGS. It is composed of a concave reflecting surface 321 that is shaped in a three-dimensional shape that has a hemispherical shape and that is continuous in a two-dimensional direction. The concave reflecting surface 321 causes the brightness due to the reflection to cause irregularity of light and darkness similar to the sunbeams or the flow of water in the creek, and the shape thereof is 1 / f shown in the above equation (1). It is determined from the fluctuation function f (x).

That, 1 / f fluctuation function f concave reflecting surface 321 which is determined by the (x) is a plurality of sine curves of different frequencies: appropriate coefficient ⁽² i x Frequency) ² -i ^{(2 -i:} amplitude) It becomes the shape which added by adding.

  The concave reflecting surfaces 321 exhibiting the three-dimensional shape are continuously arranged in the row and column directions at a predetermined fixed interval L (0 <L <10 mm), as shown in FIGS. The reflective surfaces 321c of the rows adjacent to each other are arranged with a shift of 1L in the column direction. The depth h of the concave reflecting surface 321 in the row and column directions is set in a range of 0 ≦ h ≦ 20 mm. Further, the hemispherical reflecting surface 321 in the row and column directions is composed of a concave reflecting surface having various sizes of diameter r as shown in FIG.

  In the decorative panel 30 shown in the third embodiment, when the light incident surface 31a of the substrate 31 is irradiated with the illumination light 15, the illumination light 15 is indicated by the arrows in FIGS. The incident light 15a travels through the substrate 31 and reaches the concave reflecting surface 321 having a hemispherical three-dimensional shape. A part of the incident light 15a reaching the reflecting surface 321 is a base material as indicated by an arrow 15b according to the shape of the interface 321a with the space 34 of the reflecting surface 321 determined by the 1 / f fluctuation function f (x). 31 is reflected toward the light incident surface 31a side. Accordingly, the brightness of the reflected light 15b emitted from the light incident surface 31a of the base material 31 causes a light / dark pattern that irregularly changes in accordance with the 1 / f fluctuation function f (x), and also due to the shift of the light wavelength. Causes chromatic aberration.

  Further, the light 15c that has transmitted through the interface 321a with the space 34 of the plurality of reflection surfaces 321 and reached the reflection film 36 is reflected and diffused by the color-colored reflection film 36, and is reflected on the reflection surface 321 as color-colored reflected light. Reflected towards. Thereby, on the surface of the decorative panel 30, the decorative pattern 32 formed by designing a morpho butterfly as shown in FIG. That is, the decorative pattern 32 is a combination of light brightness and darkness that changes irregularly according to the interface 321a with the space 34 of the reflecting surface 321 constituting the decorative pattern 32 and the light color that changes due to the reflected light from the reflecting film 36. It will be colored light and shade.

  According to the decorative panel 30 shown in the third embodiment as described above, a plurality of reflecting surfaces 321 are arranged along the opposite surface 31b on the surface 31b opposite to the light incident surface 31a of the base material 31. The decorative pattern 32 is formed, and the plurality of reflecting surfaces 321 are formed as a three-dimensional concave reflecting surface having a hemispherical shape, whereby the brightness of the light reflected by the reflecting surface 321 is changed to 1 / f fluctuation brightness. The decorative pattern 32 is made bright and dark, and the light 15c that passes through the interfaces 321a of the plurality of reflecting surfaces 321 and reaches the reflecting film 36 is reflected and diffused by the reflecting film 36 and reflected toward the reflecting surface 321. In addition, the colored color of the reflective film 36 is expressed in the light reflected toward the decorative pattern, and the decorative pattern is displayed in a bright display by the combination of the reflected light of the color and the brightness of the light. Therefore, the decoration pattern 32 formed on the base material 31 can be colored in an arbitrary color using light in the visible region, and the display color of the decoration pattern 32 is shaded according to the 1 / f fluctuation function f (x). Can be granted. As a result, the decorative panel 20 can be provided with a good-looking optical decoration rich in variation due to 1 / f fluctuations, and also acts on the visual perception of the viewer of the decorative panel 30 to heal and relax. An optical decoration effect that gives comfort and peace can be exhibited.

  Further, according to the second embodiment, since the space 2434 is formed between the reflective film 36 and the surface 31b opposite to the light incident surface 31a of the base material 31, the light is reflected and diffused by the reflective film 36. As a result, it is possible to enhance the natural glow effect that makes the viewer feel more comfortable with the reflected light, and to further enhance the appearance of the decorative panel.

Moreover, according to this Embodiment 3, the appearance of a decoration panel can be emphasized from the surface of a color by shape | molding the base material 31 with a colored transparent material.
(Embodiment 4)
Next, a fourth embodiment of a decorative panel according to the present invention will be described with reference to FIGS.

  FIG. 14 is an enlarged cross-sectional view of the main part of the decorative panel according to the fourth embodiment of the present invention, and FIG. 15 is an enlarged cross-sectional view of the main part of the decorative panel according to the fourth embodiment.

  This Embodiment 4 shows the modification of the three-dimensional shape reflection part 121 which comprises the decoration pattern 12 of the decoration panel 10 in the said Embodiment 1, This three-dimensional shape reflection part 121 is a figure. 4 and FIG. 5, the concave reflecting surface 121 continuous in the two-dimensional direction is formed into a three-dimensional shape of a triangular roof type by giving 1 / f fluctuation to the basic shape of the triangular roof type. have.

  The cover member 13 is provided on the base material 11 so as to cover the surface 11b opposite to the light incident surface 11a. The cover member 13 is made of an opaque resin plate and is formed along the periphery of the base material 11. The peripheral edge portion of the cover member 13 is fitted into the joint step portion 111 and can be fixed by a locking mechanism (not shown) provided in the engagement step portion 111 or an adhesive. Further, a space 14 of 0.2 mm or more and 10 mm or less is formed between the substrate 11 and the reflective film 16 while being fixed to the surface 11 b opposite to the light incident surface 11 a of the substrate 11.

  Further, a translucent or transparent decorative layer 17 having a decorative pattern such as a grain, a floral pattern, or a geometric pattern is formed on the light incident surface 11a of the substrate 11.

  According to the decorative panel shown in the fourth embodiment, since the decoration layer 17 having a pattern pattern is provided on the light incident surface 11a of the base material 11, the pattern reflection of the decoration layer 17 is reflected. A light / darkness of randomly changing light of 1 / f fluctuations due to the reflected light generated on the surface 121 is added, thereby giving a three-dimensional effect to the decorative pattern 12 and providing a decorative panel with better appearance.

  The basic shape of the three-dimensional reflecting portion in the decorative panel of the present invention is not limited to the triangular roof type, trapezoidal roof type, or hemispherical roof type shown in the above embodiment, but the reflected light at the reflecting portion. Any shape can be used as long as the brightness can be changed irregularly in brightness.

  Further, the three-dimensional concave reflecting surface forming the reflecting portion in the decorative panel of the present invention is not limited to the shape determined by the 1 / f fluctuation function shown in Equation 1, but is concave using a random number table. The shape of the reflection surface can be determined.

  Further, the decorative pattern formed on the decorative panel of the present invention is not limited to the design of the morpho butterfly shown in the above embodiment, but the decoration of the instrument panel for vehicles or the door surface of furniture or the end panel for drawer It may be a decorative panel used for the decoration of the cell phone, the decoration of the surface of the mobile phone main body, the decoration of the surface of the electric appliance, or the design of characters, logo marks, wood grain, and the like.

  In addition, the decorative panel of the present invention is not limited to a decorative pattern formed by designing the morpho butterfly shown in the above embodiment and an optical decoration that expresses the hue of the morpho butterfly. It is also possible to develop a decorative color like opal having a solid luster or pearl luster of a single color such as green, blue, or a mixture of these colors.

  Further, in the decorative panel of the present invention, as shown in the above embodiment, the substrate is not limited to the configuration in which a space is formed between the surface opposite to the light incident surface of the substrate and the reflective film. The surface opposite to the light incident surface may be in contact with the reflective film.

It is a top view of the panel for decoration which shows Embodiment 1 concerning this invention. It is an expanded sectional view which follows the 2-2 line of FIG. It is a partial enlarged perspective view which shows an example when the reflective surface formed in the base material of the panel for decoration in this Embodiment 1 is seen from the back surface side of the base material. It is sectional drawing which expanded and showed a part of panel for a decoration including the base material, the reflective film, and the cover member in the location along line 4-4 in FIG. FIG. 5 is an enlarged cross-sectional view of a part of a decorative panel including a base material, a reflective film, and a cover member at a location along line 5-5 in FIG. 3. It is sectional drawing which shows typically the effect | action with respect to the light of the reflective surface of a decorative panel in Embodiment 1, and a reflective film. It is a graph which shows an example at the time of expressing the shape characteristic of the concave reflective surface determined by the 1 / f fluctuation function of this invention. It is a partial enlarged perspective view which shows an example when the reflective surface formed in the base material of the panel for decoration in Embodiment 2 of this invention is seen from the back surface side of a base material. It is sectional drawing which expanded and showed a part of panel for decoration including the base material in the location which follows the 9-9 line | wire of FIG. 8, a reflective film, and a cover member. It is sectional drawing which expanded and showed a part of panel for decoration including the base material in the location which follows the 10-10 line | wire of FIG. 8, a reflective film, and a cover member. It is a partial enlarged perspective view which shows an example when the reflective surface formed in the base material of the panel for decoration in Embodiment 3 of this invention is seen from the back surface side of a base material. FIG. 12 is an enlarged cross-sectional view of a part of a decorative panel including a base material, a reflective film, and a cover member at a location along line 12-12 in FIG. 11. It is sectional drawing which expanded and showed a part of panel for decoration including the base material in a location along line 13-13 of FIG. 11, a reflective film, and a cover member. It is an expanded sectional view of the principal part of the panel for decoration in Embodiment 4 of this invention. It is an expanded sectional view of the principal part of the panel for decoration in this Embodiment 4.

Explanation of symbols

10, 20, 30 Decorative panel 11, 21, 31 Base material 11a, 21a, 31a Light incident surface 11b, 21b, 31b Surface opposite to light incident surface 12, 22, 32 Decorative pattern 121, 221, 321 Reflecting surface 121a , 221a, 321a Interface 13, 23, 33 Cover member 14, 24, 34 Space 16, 26, 36 Reflective film

Claims (3)

A colored transparent or colorless transparent or colored translucent substrate having a light incident surface on one surface in the thickness direction; and
A cover member provided to cover the back surface through a space on the back surface that is the surface opposite to the light incident surface of the base material;
A decorative pattern designed and formed on the back surface of the substrate;
Provided on the surface of the cover member that faces the back surface of the base material, and reflects light transmitted through the base material from the light incident surface side as at least the decorative pattern as colored light. And a reflective film
The decorative pattern is continuously arranged in a two-dimensional direction at a random pitch along the back surface of the base material, and has a plurality of concave three-dimensional shapes having different depths with respect to the light incident surface of the base material. Composed of reflective surfaces,
The three-dimensional reflecting surface reflects 1 / f fluctuation that irregularly changes in luminance of the reflected light by reflecting incident light incident on the base material from the light incident surface toward the light incident surface. is configured to effect the brightness of light to the decorative pattern giving,
The reflective film comprises a colored transparent color film and a reflective layer formed on a surface opposite to the back surface of the base material of the color film,
The transmitted light that reaches the reflective film through the interface and the space between the base material and the reflective surfaces and the space from the light incident surface side is expressed in a color color corresponding to the color film with the reflective film, and It is configured to color the decorative pattern by reflecting a color color toward the decorative pattern.
A decorative panel characterized by that.   The decorative surface according to claim 1, wherein the plurality of reflecting surfaces have a three-dimensional shape selected from the group consisting of a triangular roof type, a trapezoidal roof type, a hemispherical roof type, and a hemispherical roof type. panel.   The decorative panel according to claim 1 or 2, wherein a translucent or transparent decorative layer having a decorative pattern is formed on a light incident surface of the substrate.