JP2020075371A - Molded article with decorative sheet, decorative sheet, and method of manufacturing molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molded product with a decorative sheet which is excellent in design and functionality.
SOLUTION: The molded product 10 with a decorative sheet comprises a plate-shaped main body member 30 having a curved surface and a decorative sheet 20 laminated on the main body member 30, and the decorative sheet 20 is a pattern. The image display surface 50 includes a portion 22, a light transmission portion 24 that is dispersedly arranged in the pattern portion 22, and an image display surface 50 that displays image light from the display device 40 through the light transmission portion 24. At least a part of the region is arranged so as to face the curved surface of the main body member 30.
[Selection diagram] Fig. 3

Description

  The present invention relates to a molded product with a decorative sheet, a decorative sheet, and a method for manufacturing a molded product with a decorative sheet.

  In order to impart a design property to a display device that displays image light, it has been considered to provide a decorating sheet facing the display surface of the display device. The decorative sheet can be provided with a design that can be in harmony with the surrounding environment of the display device. Further, such a decorative sheet is provided in a region facing the display surface of the display device, as described in Patent Document 1, so that the image light of the display device can pass through the decorative sheet. It has a light transmission part such as a hole.

Patent No. 5688573

  The inventors of the present invention, as a result of the research, by using a decorative sheet having a light-transmitting portion to display an image on the curved surface of a molded product such as a car center console, the molded product has more design and We have found that it will be highly functional.

  In view of the above points, an object of the present invention is to provide a decorative sheet-attached molded product and a decorative sheet which are excellent in design and functionality.

  In order to solve the above problems, the decorative sheet of the present invention has a plate-shaped main body member having a curved surface, and a decorative sheet laminated on the main body member, and the decorative sheet is a pattern portion. And a light transmitting portion dispersedly arranged in the picture portion, and the decorative sheet includes an image display surface for displaying image light from a display device through the light transmitting portion, and the image display surface is At least a part of the region is arranged to face the curved surface of the main body member. Further, the decorative sheet may be one in which the light transmitting portions having the same shape and the same size are arranged in a lattice shape having a constant lattice spacing in at least a region corresponding to the image display surface. . Further, the light transmitting portion of the decorative sheet may have a circular shape. Further, the decorative sheet may be one in which the light transmitting portions are arranged in a square lattice pattern, a 60 ° houndstooth pattern, or a 45 ° houndstooth pattern.

  The molded product with a decorative sheet of the present invention is a decorative sheet that is used to form a molded product with a decorative sheet by being laminated on a plate-shaped main body member having a curved surface, and includes a pattern portion and the inside of the pattern portion. A light-transmitting portion dispersedly disposed in the main body, the image-displaying surface displaying the image light from the display device through the light-transmitting portion. The member is arranged so as to face the curved surface of the member. In addition, the light transmitting portion has a grid shape in which at least the region corresponding to the image display surface has the same shape and the same size of the light transmitting portion after forming the molded product with the decorative sheet having a constant lattice spacing. The shape and arrangement may be such that they are arranged in the same manner. Further, the light transmitting portion may have a shape which becomes a circular shape after the molding of the molded product with the decorative sheet. Further, the light transmitting portions are arranged so as to be arranged in a square lattice shape, a 60 ° houndstooth check pattern, or a 45 ° houndstooth check pattern after the molded product with the decorative sheet is molded. May be.

  The method for manufacturing a molded article with a decorative sheet according to the present invention comprises an A1 step of forming the light transmitting portion on the decorative sheet, an A2 step of laminating the decorative sheet on the main body member, and the decorating step. A3 step of molding the main body member in which sheets are laminated into a shape having a curved surface, wherein the shape and arrangement of the light transmitting portion in the A1 step is the decoration after molding in the A3 step. The molded article with a sheet is designed to have a target shape and arrangement of the light transmitting portion.

  The method for producing a molded product with a decorative sheet according to the present invention includes a B1 step of forming the light transmitting portion on the decorative sheet, a B2 step of molding the main body member into a shape having a curved surface, and A step B3 of stacking the decorative sheet on a main body member, and the shape and arrangement of the light transmitting part in the step B1 is a target in the molded product with the decorative sheet after stacking in the step B3. It is designed so as to have the shape and arrangement of the light transmitting portion.

  According to the present invention, a molded article with a decorative sheet and a decorative sheet can have excellent designability and functionality.

It is an exploded perspective view which shows roughly the display device which has the molded product with a decorative sheet of this embodiment. It is a perspective view which shows roughly the display device which has the molded product with a decorative sheet of this embodiment, and has shown the state where the display device is OFF. It is a perspective view which shows roughly the display device which has the molded product with a decorative sheet of this embodiment, and has shown the state where the display device is ON. It is a perspective view which shows roughly the molded product with a decorative sheet of this embodiment. It is a longitudinal cross-sectional view which shows roughly the molded product with a decorative sheet of this embodiment, and shows the AA cross section of FIG. FIG. 6 is an enlarged front view of a decorative sheet showing an example in which light transmission parts are arranged in a 45 ° houndstooth pattern. It is an enlarged front view of the decoration sheet which shows the example in which the light transmission parts are arranged in a 60 ° zigzag pattern. It is a longitudinal section showing a manufacturing method of a molding with a decorative sheet of this embodiment. It is a longitudinal section showing a manufacturing method of a molding with a decorative sheet of this embodiment. It is a longitudinal section showing a manufacturing method of a molding with a decorative sheet of this embodiment. It is a longitudinal section showing a manufacturing method of a molding with a decorative sheet of this embodiment. It is a longitudinal section showing a manufacturing method of a molding with a decorative sheet of this embodiment. It is a development view showing the shape and arrangement of the light transmitting portion of the decorative sheet of the molded product with the decorative sheet of the present embodiment. It is a front view which shows the shape and arrangement | positioning of the light transmission part of the decorative sheet before shaping the molded article with a decorative sheet of this embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, in the drawings attached to the present specification, for convenience of illustration and understanding, the scale, the vertical and horizontal dimension ratios, etc. are appropriately changed and exaggerated from the actual ones.

  In this specification, the terms “layer”, “sheet” and “film” are not distinguished from each other based only on the difference in designation. For example, the term “sheet” is a concept that also includes members that can be called layers or films.

  Further, as used in the present specification, the shape and geometric conditions and the degree thereof are specified. For example, terms such as “parallel”, “orthogonal”, and “identical” and length and angle values are strict. Without being bound by the meaning, it should be interpreted in a range including the extent to which similar functions can be expected.

  The molded product with a decorative sheet 10 and the decorative sheet 20 according to the embodiment of the present invention will be described.

  FIG. 1 is an exploded perspective view schematically showing a molded product with a decorative sheet 10 having a display device 40 of this embodiment. 2 and 3 are perspective views schematically showing a decorative sheet-formed molded product 10 having a display device 40 of the present embodiment. FIG. 2 shows a state in which the display device 40 is OFF, and FIG. , The display device 40 is in the ON state.

  The molded product with a decorative sheet 10 having a display device 40 includes a display device 40 having a display surface 41 capable of emitting image light, and a decorative sheet in which at least a part of the display device 41 faces the display surface 41. And an attached molded product 10.

  As the display device 40, any display device such as a liquid crystal display, a plasma display and an organic EL display can be used. Alternatively, the display device 40 is a device for displaying an image by transmitting a transparent film or the like on which a light-transmitting print is applied, or a device for shielding a part of the light with a light shield to display the brightness. Good. In this case, the display device 40 has a light source that emits light, a printed transparent film, and a light shield.

  The molded product with a decorative sheet 10 has a plate-shaped main body member 30 having a curved surface, and the decorative sheet 20 laminated on the surface of the main body member 30. The molded product 10 with a decorative sheet constitutes an interior member or exterior member of a moving body such as a vehicle such as an automobile or a railroad, an aircraft, a ship, and a spacecraft. As a specific example, the molded product with a decorative sheet 10 constitutes a center console, a door trim, an instrument panel, etc. of an automobile. Alternatively, the decorative sheet-formed molded product 10 may be one that constitutes an interior member or exterior member of a building, or one that is incorporated in an electronic device, furniture, or an electric appliance. As a specific example, the decorative sheet-attached molded product 10 constitutes a touch sensor unit of a television or a monitor, various membrane switches, and the like.

  In the molded product 10 with the decorative sheet having the display device 40, the image light emitted from the display surface 41 of the display device 40 passes through the main body member 30 and the decorative sheet 20 of the molded product 10 with the decorative sheet, It is configured to be displayed on the image display surface 50 of the decorative sheet 20. The image display surface 50 is an area on the surface of the decorative sheet 20 that faces the display surface 41 of the display device 40. The image display surface 50 displays the image light from the display surface 41 of the display device 40 through the light transmitting portion 24 of the decorative sheet 20, as described later.

  When the display device 40 is OFF (no image light is emitted from the display surface 41 of the display device 40), only the design of the decorative sheet 20 is observed and the presence of the display device 40 is not felt. ing. In a state where the display device 40 is ON (a state in which image light is emitted from the display surface 41 of the display device 40), in the design of the decorative sheet 20, that is, on the image display surface 50 of the decorative sheet, Image light emitted from the display surface 41 of the display device 40 is displayed. In the molded product with a decorative sheet 10 having the display device 40 of the present embodiment, at least a part of the image display surface 50 of the decorative sheet 20 is arranged so as to face the curved surface of the main body member 30. Is characterized by.

  As described above, the molded product 10 with the decorative sheet having the display device 40 of the present embodiment has the same design as a center console of an ordinary automobile when the display device 40 is OFF, and the display device 40 is In the ON state, information such as image light is displayed on the curved surface of the center console or the like, which is excellent in design and functionality.

  FIG. 4 is a perspective view schematically showing the molded product with a decorative sheet 10 of the present embodiment. FIG. 5 is a vertical cross-sectional view schematically showing the molded product with a decorative sheet 10 of the present embodiment, and shows a cross section taken along the line AA of FIG. 4. It should be noted that, in these drawings, the size and the interval of the light transmitting portions 24 are shown in a greatly exaggerated manner from the viewpoint of easy understanding.

  The molded product with a decorative sheet 10 has a plate-shaped main body member 30 having a curved surface, and the decorative sheet 20 laminated on the surface of the main body member 30. The decorative sheet 20 has a pattern portion 22 and a large number of light transmitting portions 24 dispersedly arranged in the pattern portion 22.

  The main body member 30 is composed of a transparent plate-shaped member that transmits light. As the main body member 30, any material may be used as long as it can be molded into a shape having a curved surface and the decorative sheet 20 can be appropriately laminated, and examples thereof include a polycarbonate resin and an ABS resin. The thickness of the main body member 30 is, for example, 0.5 μm or more and 5 μm or less.

  In the present specification, “transparent” means having transparency to such an extent that one side of the member can be seen through the other side through the member, for example, 30 It means having a visible light transmittance of not less than%, more preferably not less than 70%. The visible light transmittance was measured at a wavelength of 380 nm to 780 nm using a spectrophotometer (“UV-3100PC” manufactured by Shimadzu Corporation, JIS K 0115 compliant product), and the transmittance at each wavelength was measured. Is specified as the average value of.

  The decorative sheet 20 includes a base material portion 21, a pattern portion 22 and a shielding portion 23 provided on the base material portion 21, and a light transmitting portion 24 that is a non-formation portion of the pattern portion 22 and the shielding portion 23. Have The light transmitting portions 24 are arranged dispersedly in the pattern portion 22 when observed from the normal line direction of the decorative sheet 20.

  The base material portion 21 is a transparent film-shaped member, and appropriately supports the pattern portion 22 and the shielding portion 23 provided on the base material portion 21. As the base material portion 21, any material may be used as long as it can transmit visible light and can appropriately support the pattern portion 22 and the shielding portion 23. For example, polymethyl methacrylate, polyethylene terephthalate, polyethylene naphthalate, Examples thereof include polycarbonate, polystyrene, cyclic polyolefin and the like. Further, the base material portion 21 preferably has a thickness of 10 μm or more and 500 μm or less in consideration of visible light transmittance, appropriate supportability of the pattern portion 22 and the shielding portion 23, and the like.

  The pattern portion 22 can form any pattern such as wood grain, marble tone, geometric pattern, carbon tone, stripe, polka dot, and single color. As the pattern portion 22, any material can be used as long as it can be molded into a shape having a curved surface and can form a pattern, and examples thereof include polymethyl methacrylate, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polystyrene and cyclic polyolefin. be able to. The thickness of the pattern portion 22 is, for example, 10 μm or more and 500 μm or less.

  The shielding portion 23 is arranged between the display surface 41 of the display device 40 and the design portion 22 of the decorative sheet 20, and covers the design portion 22 from the display surface 41 side of the display device 40. The shield 23 has a function of absorbing light so that the image light from the display surface 41 of the display device 40 does not enter the pattern portion 22. The shield 23 may include, for example, light absorbing particles in the binder resin. Examples of the light absorbing particles include black pigments such as carbon black and titanium black. The thickness of the shielding portion 23 is, for example, 1 μm or more and 20 μm or less.

  The decorative sheet 20 may not have the shielding portion 23. However, the presence of the shielding portion 23 prevents the image light from entering the design portion 22, and the design represented by the design portion 22 and the image light transmitted through the design portion 22 are mixed and observed. Can be prevented. That is, it is possible to effectively prevent the color reproducibility of the image from being deteriorated due to the absorption of visible light in the specific wavelength range in the pattern portion 22.

  The light transmitting portion 24 is a non-forming portion of the pattern portion 22 when observed from the normal line direction of the decorative sheet 20, and can transmit image light from the display surface 41 of the display device 40. An area of the decorative sheet 20 facing the display surface 41 of the display device 40 becomes the image display surface 50 of the decorative sheet 20.

  In the illustrated example, the decorative sheet 20 has circular light-transmitting portions 24 of the same size arranged in a square lattice shape when observed from the normal line direction of the decorative sheet 20. As an example, it is conceivable to arrange circular light transmitting portions 24 having a diameter of 80 μm in a square lattice pattern at intervals of 80 μm, and the opening ratio of the decorative sheet 20 at this time is about 20%. The opening ratio of the decorative sheet 20 is the ratio of the area occupied by the light transmitting portion 24 of the decorative sheet 20 in the observation from the normal line direction of the decorative sheet 20, and (opening ratio) = ( The total area of the light transmitting portion 24) / ((the total area of the pattern portion 22) + (the total area of the light transmitting portion 24)).

  With respect to the aperture ratio of the decorative sheet 20, the design of the design portion 22 of the decorative sheet 20 can be observed when the display device 40 is in the OFF state, and from the display surface 41 of the display device 40 when the display device 40 is in the ON state. It is set so that the image light can be observed. From this viewpoint, the opening ratio of the decorative sheet 20 is preferably 5% or more and 50% or less, and more preferably 10% or more and 25% or less.

  Regarding the distance between the respective light transmitting portions 24, the design of the pattern portion 22 is observed more sharply when the display device 40 is OFF, and the image light is observed separately when the display device 40 is ON. It is set to be difficult. As a result of the research conducted by the applicants of the present invention, by designing the distance between the light transmitting portions 24 to be a certain value or more, the design of the pattern portion 22 can be observed more sharply, and the distance between the light transmitting portions 24 is increased. It has been found that the image light is separated and is less likely to be observed when the value is less than a certain value. From this viewpoint, the distance between the respective light transmitting portions 24 is preferably 50 μm or more and 200 μm or less, and more preferably 80 μm or more and 160 μm or less.

  The light transmitting portion 24 of the decorative sheet 20 of the present embodiment has a circular shape when observed from the normal line direction of the decorative sheet 20, but the light transmitting portion 24 of the decorative sheet 20 of the present invention has a circular shape. It does not have to be a thing. However, as a result of the study by the present applicants, the shorter the edge length of the light transmitting portion 24 per unit area when observed from the normal direction of the decorative sheet 20, the more the scattering of image light is suppressed, and the image deterioration is caused. It has been found that it can also be suppressed. Then, among the figures having the same area, the circle has the shortest perimeter. Therefore, it is preferable that the light transmitting portion 24 of the decorative sheet 20 has a circular shape when observed from the normal line direction of the decorative sheet 20.

  The light transmitting parts 24 of the decorative sheet 20 of the present embodiment are arranged in a square lattice pattern when observed from the normal line direction of the decorative sheet 20, but the light transmitting parts of the decorative sheet 20 of the present invention. 24 does not need to be arranged in a square lattice, and may not be arranged in a lattice. However, when the light transmitting portions 24 having the same shape and the same size are formed in a lattice shape having a constant lattice spacing, the image light of the display device 40 is transmitted uniformly, so that the display device 40 is displayed. The unevenness in the brightness of the image is less likely to occur. As an example of the lattice shape having a constant lattice spacing, in addition to a square lattice shape, a 45 ° staggered lattice shape, a 60 ° staggered lattice shape, and the like can be mentioned. FIG. 6A is an enlarged front view of the decorative sheet 20 showing an example in which the light transmitting portions 24 are arranged in a 45 ° houndstooth pattern, and FIG. 6B is a diagram showing the light transmitting portions 24 arranged in a 60 ° houndstooth pattern. It is an enlarged front view of the decorative sheet 20 which shows the performed example. Further, when the light transmitting portions 24 are arranged in a square lattice shape, the unevenness of the image on the display device 40 is further unlikely to occur.

  Therefore, the light transmitting portions 24 of the decorative sheet 20 are arranged in a lattice shape having a constant lattice spacing when the light transmitting portions 24 of the same shape and the same size are observed from the normal line direction of the decorative sheet 20. It is preferable that the light transmitting portions 24 having the same shape and the same size are arranged in a square lattice. In addition, since the light transmitting portions 24 having the same shape and the same size are arranged in a lattice shape having a constant lattice spacing, the combination of the light transmitting portions including the light transmitting portions 24 having different shapes is constant. It is also included that they are arranged in a grid pattern having a space of. Further, that the light transmitting portions 24 having the same shape and the same size are arranged in a lattice shape having a constant lattice spacing means that the decorative sheet 20 includes a plurality of groups of the light transmitting portions 24, and At least one of the shape, size, and arrangement of the light transmitting portions 24 is different between the plurality of light transmitting portions 24, but the plurality of light transmitting portions 24 included in one group have the same shape and the same size and have a constant interval. The arrangement in a grid pattern is also included.

  The meanings of “identical” in “identical shape” and “identical size” are to be construed including the extent to which a similar function can be expected without being bound by a strict meaning. For example, in the case where the light transmitting portion 24 is substantially circular, the "same shape" is that all a / b are 2 or less, where "a" is the major radius and "b" is the minor radius of the light transmitting portion 24. Is included, the difference between the value of (a + b) / 2 of any light transmitting portion 24 and the value of (a + b) / 2 of the closest light transmitting portion 24 is Those which are 10% or less of the value of (a + b) / 2 of the arbitrary light transmitting portion 24 are included.

  Although the light transmitting portion 24 of the decorative sheet 20 of the present embodiment is formed on the entire surface of the decorative sheet 20, the light transmitting portion 24 of the decorative sheet 20 of the present invention is provided on at least the image display surface 50. It only has to be formed in the corresponding region. Further, regarding the preferable shape and arrangement of the light transmitting portion 24 of the decorative sheet 20 described above, at least the area corresponding to the image display surface 50 may have such a shape and arrangement.

  The method for forming the light transmitting portion 24 of the decorative sheet 20 of this embodiment is not particularly limited. For example, the light transmitting portion 24 of the decorative sheet 20 is formed using a laser technique. In the forming method using the laser technique, first, the pattern portion 22 and the shielding portion 23 are provided on the entire surface of the base material portion 21. Next, a laser is applied to a position on the base material portion 21 where the light transmitting portion 24 is to be formed. The pattern portion 22 and the shielding portion 23 at the position irradiated with the laser are removed. The positions of the removed pattern portion 22 and the shielding portion 23 become the light transmitting portion 24.

  Alternatively, the light transmitting portion 24 of the decorative sheet 20 may be formed using a photolithography technique. In the forming method using the photolithography technique, first, the pattern portion 22 and the shielding portion 23 are provided on the entire surface of the base material portion 21. Next, a photoresist is applied to the side where the pattern portion 22 and the shielding portion 23 are provided. Then, a photomask having a hole at a position where the light transmitting portion 24 is to be formed is provided on the photoresist. That is, the photoresist is dissolved in the developing process at the position where the light transmitting portion 24 is to be formed. Next, it is dipped in an etching solution to remove the pattern portion 22 and the shielding portion 23 at the position where the photoresist is removed. The positions of the removed pattern portion 22 and the shielding portion 23 become the light transmitting portion 24.

  Further, the light transmitting portion 24 of the present embodiment is filled with a transparent resin having a refractive index of ± 0.2 that of the base material portion 21. The light transmitting portion 24 may be a hole or a void. However, as a result of the research conducted by the applicants of the present application, when the light transmissive portion 24 is formed of a transparent resin having a difference in refractive index from the base material portion 21 of 0.2 or less, the decorative sheet 20 is observed close up. It has been found that the light transmitting portion 24 becomes less noticeable when the above is done. Since the acrylic resin having the refractive index of 1.53 to 1.57 is often used as the base material portion 21 of the decorative sheet 20, the material of the light transmitting portion 24 is 1.33 to 1.77. Polymethylmethacrylate resin, fluorine resin, silicone resin, polypropylene, urethane resin, polyethylene, nylon, polyvinyl chloride, epoxy, polycarbonate, polystyrene and the like having a refractive index are preferable.

  7A to 7E are vertical cross-sectional views showing a method for manufacturing the molded product with a decorative sheet 10 of the present embodiment.

  First, as shown in FIG. 7A, the light transmitting portion 24 is formed on the decorative sheet 20. The shape and arrangement of the light transmitting portion 24 at this time are designed so as to have a target shape and arrangement in the molded product with a decorative sheet 10 after molding by the following steps. Details of this design will be described later.

  Next, as shown in FIG. 7B, the decorative sheet 20 is laminated on the main body member 30 by thermal lamination. The lamination of the decorative sheet 20 on the main body member 30 may be performed via an adhesive layer instead of thermal lamination. Examples of the material of the adhesive layer include acrylic-based, urethane-based, and silicon-based resins.

  Next, as shown in FIGS. 7C and 7D, the main body member 30 in which the decorative sheet 20 is laminated is formed by vacuum forming. Specifically, as shown in FIG. 7C, the main body member 30 on which the decorative sheet 20 is laminated is heat-softened and placed in the vicinity of the mold 60, and then, as shown in FIG. 7D, the main body member 30. Is vacuum-sucked from a large number of minute holes (not shown) provided in the mold 60 to mold the main body member 30 into a shape that matches the shape of the mold 60.

  Finally, as shown in FIG. 7E, the molded body member 30 is removed from the mold 60.

  The molded product 10 with a decorative sheet of the present embodiment is formed by vacuum forming the main body member 30 on which the decorative sheet 20 is laminated, but the molded product 10 with a decorative sheet of the present invention is not limited to this. Not done. The molded product with a decorative sheet 10 of the present invention may be a body member 30 on which the decorative sheet 20 is laminated, which is molded by pressure molding or the like. Further, the molded product with a decorative sheet 10 of the present invention may be one in which the decorative sheet is laminated by vacuum molding or the like on the main body member 30 which has been molded into a shape having a curved surface. Further, the molded product with a decorative sheet 10 of the present invention may be one in which the decorative sheet 20 is laminated at the same time as the main body member 30 is molded by a molding method such as insert molding.

  FIG. 8 is a development view showing the shape and arrangement of the light transmitting portion 24 of the decorative sheet 20 of the molded product 10 with a decorative sheet of this embodiment. FIG. 9: is a front view which shows the shape and arrangement | positioning of the light transmission part 24 of the decorative sheet 20 before shape | molding the molded article 10 with a decorative sheet of this embodiment.

  As shown in FIG. 8, in the decorative sheet 20 of the molded product 10 with a decorative sheet (hereinafter, also referred to as “the decorated decorative sheet 20”), the circular light transmitting portions 24 are in a square lattice shape. It is located in. On the other hand, as shown in FIG. 9, in the decorative sheet 20 before molding the molded product with a decorative sheet 10 (hereinafter, also referred to as “decorative sheet 20 before molding”), at least a part of the region. In, the light transmitting portions 24 have an elliptical shape, and the distance between the light transmitting portions 24 is not constant. This is when the main body member 30 on which the decorative sheet 20 is laminated is formed into a shape having a curved surface by vacuum forming or the like (or the main body member 30 formed into a shape having a curved surface is vacuum formed into the main body member 30 or the like. This is because the deformation of the decorative sheet 20 that occurs when the sheets are laminated) is taken into consideration.

  Such deformation of the decorative sheet 20 is usually stretched in a direction having a curvature within the curved surface in a region corresponding to the convex curved surface of the main body member 30, and corresponds to the concave curved surface of the main body member 30. In the area to be filled, it is compressed in the direction having the curvature within the curved surface. In addition, in the molding method in which the decorative sheet 20 (and the main body member 30) is stretched as a whole, the deformation of the decorative sheet 20 is usually relative to each other in a region corresponding to the convex curved surface of the main body member 30. In the area corresponding to the concave curved surface of the main body member 30, it becomes relatively small.

  In the example shown in FIG. 9, in the region where the decorative sheet 20 is stretched corresponding to the convex curved surface of the main body member 30, the light transmitting portion 24 is an ellipse whose minor axis is the direction in which the decorative sheet 20 is stretched. The shape is such that the distance between the light transmitting portions 24 in the direction along which the decorative sheet 20 is stretched is relatively short. Then, the greater the extent to which the decorative sheet 20 is stretched, the shorter the elliptical minor axis of the light transmitting portion 24 and the distance between the light transmitting portions 24 become. By designing the shape and arrangement of the light transmitting portions 24 of the decorative sheet 20 before molding in this way, the decorative sheet 20 after molding has the circular light transmitting portions 24 arranged in a square lattice shape. Can be

  The design of the shape and arrangement of the light-transmitting portion 24 of the decorative sheet 20 before molding is performed by estimating the deformation of the decorative sheet 20 after molding from the decorative sheet 20 before molding, and the target in the decorative sheet 20 after molding. The shape and the arrangement of the light transmitting portion 24 are set. As a specific example, a three-dimensional structure simulation using a computer is performed, or the decorative sheet 20 formed with a lattice pattern for observation is actually used to form the molded article 10 with the decorative sheet, For example, it is possible to confirm the deformation in each area of the sheet 20.

  By performing such a design, it is possible to suppress variations in the shape and arrangement of the light transmitting portion 24 when the decorative sheet 20 is three-dimensionally molded, and in turn, transmission due to variations in the shape and arrangement of the light transmitting portion 24. It is possible to suppress the occurrence of image blur due to uneven brightness, moire, reflected light diffraction, and the like.

  In the decorative sheet 20 before molding of the present embodiment, the shape of the light transmitting portion 24 is an elliptical shape whose minor axis is the direction in which the decorative sheet 20 is stretched, and the direction in which the decorative sheet 20 is stretched. Although the distance between the light transmitting portions 24 in the direction along is relatively short, the decorative sheet 20 before molding of the present invention is not limited to this. The shape and arrangement of the light transmitting portion 24 of the decorative sheet 20 before molding of the present invention are the shape and arrangement of the light transmitting portion 24 of the target decorative sheet 20 after molding, and the decorative sheet 20 after molding. Various modes will be adopted depending on the mode of deformation from the decorative sheet 20 before molding.

  However, from the viewpoint of the preferable shape of the light transmitting portion 24 of the decorative sheet 20 after molding, the shape of the light transmitting portion 24 of the decorative sheet 20 before molding is the same as that of the decorative sheet 20 after molding. It is preferably a circular shape. From the viewpoint of the preferable shape and arrangement of the light transmitting portion 24 of the decorative sheet 20 after molding, the shape and arrangement of the light transmitting portion 24 of the decorative sheet 20 before molding are the same as those of the decorative sheet 20 after molding. In the above, it is preferable that the light transmitting portions 24 having the same shape and the same size are arranged in a lattice shape having a constant lattice spacing, and the light transmitting portions 24 having the same shape and the same size are formed in a square lattice shape. More preferred are those that will be arranged.

  Further, the curved surfaces of the main body member 30 and the decorative sheet 20 of the present embodiment have a curvature only in one direction, but the curved surfaces of the main body member 30 and the decorative sheet 20 of the present invention are not limited thereto. It may have a curvature in two or more directions.

  As described above, the molded product with a decorative sheet and the decorative sheet of the present embodiment have excellent design and functionality.

  Although one of the embodiments of the present invention has been described above, the molded product with a decorative sheet and the decorative sheet of the present invention are not limited to this embodiment. The molded product with a decorative sheet and the decorative sheet of the present invention can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. it can.

10 Molded Product with Decorative Sheet 20 Decorative Sheet 21 Base Material Part 22 Picture Part 23 Shielding Part 24 Light Transmitting Part 30 Main Body Member 40 Display Device 41 Display Surface 50 Decorative Sheet Image Display Surface 60 Mold

Claims (10)

A plate-shaped main body member having a curved surface, and a decorative sheet laminated on the main body member,
The decorative sheet has a pattern portion and a light transmitting portion dispersedly arranged in the pattern portion,
The decorative sheet includes an image display surface that displays image light from a display device through the light transmitting portion, and the image display surface has at least a part of the area facing the curved surface of the main body member. A molded product with a decorative sheet, which is characterized by being arranged. The molded article with a decorative sheet according to claim 1,
The decorative sheet is characterized in that at least in a region corresponding to the image display surface, the light transmitting portions having the same shape and the same size are arranged in a lattice shape having a constant lattice spacing. Molded product with decorative sheet. The molded product with a decorative sheet according to claim 2,
A molded article with a decorative sheet, wherein the light transmitting portion of the decorative sheet has a circular shape. A molded article with a decorative sheet according to claim 2 or 3,
The decorative sheet is one in which the light transmitting portions are arranged in a square lattice shape, a 60 ° houndstooth check pattern, or a 45 ° houndstooth check pattern. A decorative sheet used for forming a molded article with a decorative sheet by being laminated on a plate-shaped main body member having a curved surface,
A pattern part and a light transmission part dispersedly arranged in the pattern part,
An image display surface for displaying image light from a display device through the light transmitting portion is included, and at least a part of the image display surface is arranged to face the curved surface of the main body member. A decorative sheet characterized by that. The decorative sheet according to claim 5,
The light transmitting portions are arranged at least in a region corresponding to the image display surface in a lattice shape in which the light transmitting portions having the same shape and the same size after the molding of the decorative sheet-formed molded product have a constant lattice spacing. A decorative sheet characterized by having a shape and an arrangement such that the decorated sheet is obtained. The decorative sheet according to claim 6,
The decorative sheet, wherein the light transmitting portion has a shape such that it becomes a circular shape after the molding of the decorative sheet-attached molded product. The decorative sheet according to claim 6 or 7, wherein
The light transmitting portions are arranged so as to be arranged in a square lattice shape, a 60 ° houndstooth check pattern, or a 45 ° houndstooth check pattern after molding of the molded product with the decorative sheet. Characterized decorative sheet. A method for producing a molded article with a decorative sheet according to any one of claims 1 to 4,
A1 step of forming the light transmitting portion on the decorative sheet,
A2 step of stacking the decorative sheet on the main body member,
A3 step of forming the main body member on which the decorative sheet is laminated into a shape having a curved surface,
The shape and arrangement of the light transmitting portion in the step A1 are designed to be the shape and arrangement of the light transmitting portion targeted in the molded article with the decorative sheet after the forming in the step A3. A method for producing a molded product with a decorative sheet, comprising: A method for producing a molded article with a decorative sheet according to any one of claims 1 to 4,
A B1 step of forming the light transmitting portion on the decorative sheet,
A second B2 step of molding the main body member into a shape having a curved surface;
A step B3 of stacking the decorative sheet on the main body member,
The shape and arrangement of the light transmitting portion in the step B1 is designed to be the shape and arrangement of the light transmitting portion targeted in the molded article with the decorative sheet after lamination in the step B3. A method for producing a molded product with a decorative sheet, comprising: