Cosmetic material for a moving body and an electric vehicle

Abstract

To provide a decorative material for a moving body for giving a new aesthetic appearance to the moving body. [Solution] A decorative material for a mobile object includes a decorative sheet having a first surface and a second surface opposite the first surface, and a cover member disposed facing the second surface of the decorative sheet. The decorative sheet includes a design layer 26 located between the first surface and the second surface or forming at least one of the first surface and the second surface. The design layer 26 includes unit elements 34 that function as convex or concave mirrors.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to decorative materials for moving bodies and electric vehicles.

Background Art

[0002] Conventionally, an automobile equipped with a front grille, as described in Patent Document 1, is known. A radiator through which a coolant for cooling an engine flows is disposed behind the front grille. The front grille is provided with an opening so that outside air can be taken in to cool the radiator. Since the front grille occupies a large area in the front part of the vehicle body, it has a great influence on the design of the automobile.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in recent years, moving bodies having a structure different from the conventional ones, such as electric vehicles, have been developed. For example, an electric vehicle does not include a radiator. Therefore, an electric vehicle does not need to be provided with a front grille in the front part of the vehicle body. Along with such a change in the structure of the moving body, the design required for the moving body has changed significantly.

[0005] Embodiments of the present disclosure have been made in consideration of such points, and an object thereof is to provide a decorative material for a moving body for imparting a new aesthetic appearance to the moving body.

Means for Solving the Problems

[0006] The decorative material for a moving body according to an embodiment of the present disclosure is A decorative sheet having a first surface and a second surface facing the first surface, and a cover member disposed facing the second surface of the decorative sheet, the decorative sheet includes a design layer located between the first surface and the second surface or forming at least one of the first surface and the second surface, the design layer includes unit elements that function as a convex mirror or a concave mirror.

[0007] In a vehicle cosmetic material according to an embodiment of the present disclosure, the unit element may include a Fresnel lens portion having a Fresnel lens structure.

[0008] A vehicle cosmetic material according to an embodiment of the present disclosure is an exterior material, the unit element functions as a convex mirror, the focal length of the convex mirror may be +0.5 mm or more and +350 mm or less, preferably +2 mm or more and +250 mm or less, and more preferably +5 mm or more and 150 mm or less.

[0009] A vehicle cosmetic material according to an embodiment of the present disclosure is an exterior material, the unit element functions as a concave mirror, the focal length of the concave mirror may be -350 mm or more and -0.5 mm or less, preferably -250 mm or more and -2 mm or less, and more preferably -150 mm or more and -5 mm or less.

[0010] A vehicle cosmetic material according to an embodiment of the present disclosure is an interior material, the unit element functions as a convex mirror, the focal length of the convex mirror may be +0.5 mm or more and +350 mm or less, preferably +2 mm or more and +250 mm or less, and more preferably +5 mm or more and +150 mm or less.

[0011] A vehicle cosmetic material according to an embodiment of the present disclosure is an interior material, The unit element functions as a concave mirror, The focal length of the concave mirror may be -350 mm or more and -0.5 mm or less, preferably -250 mm or more and -2 mm or less, and more preferably -150 mm or more and -5 mm or less.

[0012] Alternatively, the decorative material for a moving body according to an embodiment of the present disclosure is a decorative sheet having a first surface and a second surface facing the first surface, and a cover member disposed facing the second surface of the decorative sheet. The decorative sheet is located between the first surface and the second surface, or includes a design layer forming at least one of the first surface and the second surface. The design layer includes unit elements in which concavities and convexities forming a group of parallel straight lines or a group of parallel curves are formed in a plan view.

[0013] In the decorative material for a moving body according to an embodiment of the present disclosure, the design layer includes a plurality of unit elements, and the adjacent unit elements may have different extending directions of the group of parallel straight lines or the group of parallel curves in a plan view.

[0014] Alternatively, the decorative material for a moving body according to an embodiment of the present disclosure is a decorative sheet having a first surface and a second surface facing the first surface, and a cover member disposed facing the second surface of the decorative sheet. The decorative sheet is located between the first surface and the second surface, or includes a design layer forming at least one of the first surface and the second surface. The design layer includes unit elements in which concavities and convexities forming an embossed hologram are formed.

[0015] The decorative material for a moving body according to an embodiment of the present disclosure is an exterior material, The dimension of the unit element may be 3 mm or more and 200 mm or less, preferably 10 mm or more and 200 mm or less, and more preferably 20 mm or more and 100 mm or less.

[0016] The decorative material for a moving body according to an embodiment of the present disclosure is an interior material, The dimension of the unit element may be 3 mm or more and 200 mm or less, preferably 3 mm or more and 40 mm or less, and more preferably 6 mm or more and 20 mm or less.

[0017] In the decorative material for a moving body according to an embodiment of the present disclosure, The unit element includes a Fresnel lens portion having a Fresnel lens structure, The decorative sheet may further include a metal layer covering the Fresnel lens portion.

[0018] In the decorative material for a moving body according to an embodiment of the present disclosure, The decorative sheet may further include a metal layer covering the unevenness.

[0019] In the decorative material for a moving body according to an embodiment of the present disclosure, The metal layer may be capable of transmitting electromagnetic waves having a wavelength longer than that of visible light.

[0020] In the decorative material for a moving body according to an embodiment of the present disclosure, The metal layer includes a plurality of metal particle portions capable of reflecting visible light, and gaps through which the electromagnetic waves can pass may be provided between the plurality of metal particle portions.

[0021] In the decorative material for a moving body according to an embodiment of the present disclosure, The unit element includes a Fresnel lens portion having a Fresnel lens structure, The decorative sheet may further include a refractive index modulation layer covering the Fresnel lens structure, The refractive index of the design layer and the refractive index of the refractive index modulation layer may be different.

[0022] In the decorative material for a moving body according to an embodiment of the present disclosure, the decorative sheet further includes a refractive index modulation layer that covers the unevenness, the refractive index of the design layer and the refractive index of the refractive index modulation layer may be different.

[0023] In the decorative material for a moving body according to an embodiment of the present disclosure, the decorative sheet may be located between the design layer and the second surface, or may include a diffusion layer that forms the second surface.

[0024] In the decorative material for a moving body according to an embodiment of the present disclosure, the cover member may include a cover base material and a hard coat layer disposed opposite to the cover base material.

[0025] In the decorative material for a moving body according to an embodiment of the present disclosure, unevenness may be formed on the surface of the hard coat layer.

[0026] In the decorative material for a moving body according to an embodiment of the present disclosure, unevenness may be formed on the surface of the cover base material facing the hard coat layer.

[0027] In the decorative material for a moving body according to an embodiment of the present disclosure, the cover member may include an ultraviolet absorption layer disposed between the cover base material and the hard coat layer.

[0028] In the decorative material for a moving body according to an embodiment of the present disclosure, the cover member includes a cover base material and a hard coat layer disposed opposite to the cover base material, the cover base material and / or the hard coat layer may contain an ultraviolet absorber.

[0029] In the decorative material for a moving body according to an embodiment of the present disclosure, The cover member includes a cover base material, a hard coat layer disposed opposite to the cover base material, and an adhesion improvement layer disposed between the cover base material and the hard coat layer. The adhesion improvement layer may contain an ultraviolet absorber.

[0030] The decorative material for a moving body according to an embodiment of the present disclosure is an exterior material disposed facing a sensor using electromagnetic waves having a longer wavelength than visible light, and includes a first surface disposed facing the sensor and a second surface facing the first surface. The thickness between the first surface and the second surface in at least a part may be an integral multiple of the half wavelength of the electromagnetic wave.

Effect of the Invention

[0031] According to the embodiment of the present disclosure, a new aesthetic appearance can be imparted to the moving body.

Brief Description of the Drawings

[0032]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7A

Figure 7B

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Figure 27

MODE FOR CARRYING OUT THE INVENTION

[0033] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the drawings attached to this specification, for the convenience of illustration and easy understanding, the scale, the aspect ratio of the vertical and horizontal dimensions, etc. are appropriately changed and exaggerated from those of the actual object.

[0034] In this specification, terms for specifying shapes, geometric conditions, and their degrees, such as terms like "parallel", "perpendicular", "identical", etc. and values of lengths and angles, etc. are not restricted by strict meanings, and shall be interpreted to include ranges to the extent that similar functions can be expected.

[0035] In this specification, terms such as "sheet", "film", and "plate" are not distinguished from each other based only on the difference in names. For example, a "decorative sheet" cannot be distinguished only by the difference in name from a member called a "decorative film" or a "decorative plate".

[0036] To clarify the relationship of directions among the drawings, in some drawings, common directions are indicated by arrows with common reference numerals. The tip side of the arrow is one side of each direction. Further, an arrow pointing forward along the direction perpendicular to the plane of the drawing is indicated by a symbol with a dot in a circle, as shown in FIG. 5 for example. An arrow pointing into the depth of the plane of the drawing along the direction perpendicular to the plane of the drawing is indicated by a symbol with an "x" in a circle, as shown in FIG. 2 for example.

[0037] <<<First Embodiment>>> Figs. 1 to 9 are diagrams for explaining the first embodiment. Among them, Fig. 1 is a diagram showing an application example of the decorative material for a moving body, and Fig. 2 is a cross-sectional view showing the configuration of the decorative material for a moving body. Also, Fig. 3 is a cross-sectional view showing the configuration of the cover member used for the decorative material for a moving body. Further, Fig. 4 is a cross-sectional view showing the configuration of the decorative sheet used for the decorative material for a moving body. The decorative material for a moving body displays a design and imparts a design property to the moving body to which the decorative material for a moving body is applied. The decorative material for a moving body according to the first embodiment described below has been devised to express a three-dimensional effect and impart a new aesthetic appearance to the moving body.

[0038] In the examples shown in Figs. 1 to 9, the decorative material 10 for a moving body is applied to the front panel of the moving body 1 as an exterior material. The moving body 1 shown in Fig. 1 is an automobile. Hereinafter, an embodiment will be described with reference to the specific application examples shown in the drawings.

[0039] However, the moving body 1 to which the decorative material 10 for a moving body is applied is not limited to an automobile. The decorative material 10 for a moving body is also applicable to other moving bodies 1 as movable devices. Examples of moving bodies 1 other than automobiles include railway vehicles, carts, ships, airplanes, helicopters, drones, and robots. Moreover, originally, the decorative material 10 for a moving body is not limited to application as an exterior material. As will be described later, the decorative material 10 for a moving body is also applicable as an interior material of the moving body.

[0040] Incidentally, as shown in FIGS. 1 and 2, the mobile body decorative material 10 is disposed facing the sensor 2 that uses electromagnetic waves with a wavelength longer than visible light. The sensor 2 monitors the situation around the mobile body 1 as an example. The detection result of the sensor 2 is transmitted to the control device 3 of the mobile body 1. The control device 3 issues an alarm or controls the movement of the mobile body 1 based on the detection result of the sensor 2. For example, the sensor 2 detects an obstacle or the like in front of the mobile body 1. This sensor 2 can transmit and receive electromagnetic waves. By the sensor 2 receiving the reflected wave reflected by an obstacle or the like, the presence or absence of an obstacle and the distance to the obstacle can be detected. The sensor 2 may be a millimeter-wave radar device. The millimeter-wave radar device may use millimeter waves with a wavelength of 1 mm or more and 10 mm or less as electromagnetic waves.

[0041] As shown in FIG. 2, the mobile body decorative material 10 has a first surface 11 and a second surface 12. The first surface 11 is the back surface of the mobile body decorative material 10. The second surface 12 is the surface of the mobile body decorative material 10. The sensor 2 faces the first surface 11 of the mobile body decorative material 10. The electromagnetic wave used by the sensor 2 passes through the mobile body decorative material 10 in the third direction D3 in which the first surface 11 and the second surface 12 face each other. The first surface 11 and the second surface 12 serve as the electromagnetic wave emission surface and the incident surface. The first surface 11 and the second surface 12 are flat surfaces at least in the region facing the sensor 2 in the third direction D3. By making them flat surfaces, a decrease in the sensitivity of the sensor 2 due to the diffusion of electromagnetic waves is suppressed.

[0042] The thickness T10 (mm) along the third direction D3 of the mobile body decorative material 10 between the first surface 11 and the second surface 12 is adjusted so as to satisfy the following relational expression (1) condition, where λ (mm) is the wavelength of the electromagnetic wave used by the sensor 5 in the mobile body decorative material 10 at least in the region facing the sensor 5 in the third direction D3. (λ / 2)×k - λ / 12 < T10 < (λ / 2)×k + λ / 12 ···(1) By adjusting the thickness T10 (mm) in this way, electromagnetic waves can pass through the decorative material 10 for moving bodies with a high transmittance. Note that the wavelength λ (mm) of the electromagnetic waves in the decorative material 10 for moving bodies means the wavelength of the electromagnetic waves in the medium. Therefore, let the wavelength of the electromagnetic waves in a vacuum be λ V (mm), and let the refractive index of the decorative material 10 for moving bodies be n D . Then, the following relational expression (2) holds. λ = λ V / n D ···(2) Also, "k" in the formula is a positive integer, that is, a natural number.

[0043] Figure 27 shows a cross-section of the decorative material 10 for moving bodies having a thickness T10 (mm) along the third direction D3. In this Figure 27, the vibration states of the incident wave LI, the first reflected wave LR1, the second reflected wave LR2, and the combined reflected wave LR at a certain moment are shown. The incident wave LI is an electromagnetic wave incident on the second surface 12 of the decorative material 10 for moving bodies. The first reflected wave LR1 is an electromagnetic wave reflected at the fixed end at the second surface 12 of the decorative material 10 for moving bodies. The second reflected light LR2 is an electromagnetic wave reflected at the free end at the first surface 11 of the decorative material 10 for moving bodies. The combined reflected wave LR is an electromagnetic wave obtained by combining the first reflected wave LR1 and the second reflected wave LR2. In Figure 27, xy coordinates are defined such that the x-axis extends in the third direction D3 and the y-axis extends in a direction orthogonal to the third direction D3. Using this coordinate, the waveforms of the respective lights LI, LR1, LR2, LR are represented by the following formulas (3) to (6), respectively. In formulas (3) to (6), "λ" is the wavelength (mm) of the electromagnetic waves in the decorative material for moving bodies, "λ V " is the wavelength (mm) of the electromagnetic waves in a vacuum, "n A " is the refractive index of air, and "n D " is the refractive index of the decorative material for moving bodies. The refractive index n A of air can be considered to be 1. Y I = sin((x × n A / λ V ) × 2π) ··· Formula (3) Y R1 = sin((x × n A / λV ) × 2π) ··· Equation (4) Y R2 = -sin(((x × n A / λ V ) + (2 × T10 × n D / λ V )) × 2π) ··· Equation (5) Y R = -2 × sin(2 × T10 × n D × π / λ V ) × cos(((x × n A / λ V ) + (T10 × n D / λ V )) × 2π) ··· Equation (6)

[0044] The lower the intensity of the combined reflected wave LR, the higher the transmittance of the electromagnetic wave. The intensity of the combined reflected wave LR from the mobile body decorative material 10 is represented by "2 × sin(2 × T10 × n D × π / λ V )". When the above-mentioned relational expression (1) is satisfied, the amplitude of the combined reflected wave LR becomes less than half of the maximum value "2", that is, less than "1". That is, when the relational expression (1) is satisfied, it is an advantageous situation from the viewpoint of reducing the intensity of the combined reflected wave LR. From the above, when the relational expression (1) is satisfied, the reflection of the electromagnetic wave by the mobile body decorative material 10 can be effectively suppressed. As a result, the electromagnetic wave can pass through the mobile body decorative material 10 with a high transmittance.

[0045] From the viewpoint of improving the transmittance of the electromagnetic wave through the mobile body decorative material 10, it is preferable that the relational expression (1A) is satisfied, more preferably that the relational expression (1B) is satisfied, and even more preferably that the relational expression (1C) is satisfied, instead of the relational expression (1). (λ / 2) × k - λ / 18 < T10 < (λ / 2) × k + λ / 18 ··· (1A) (λ / 2) × k - λ / 24 < T10 < (λ / 2) × k + λ / 24 ··· (1B) (λ / 2) × k - λ / 30 < T10 < (λ / 2) × k + λ / 30 ··· (1C)

[0046] Note that the amplitudes of the first reflected wave LR1 and the second reflected wave LR2 are smaller than the amplitude of the incident wave LI. Also, the amplitude of the incident wave LI changes slightly due to the generation of the first reflected wave LR1 and the second reflected wave LR2. However, in FIG. 27, for the convenience of understanding the relationship between the phases of the first reflected wave LR1 and the second reflected wave LR2 and the amplitude of the combined reflected wave LR, the amplitudes of the incident wave LI, the first reflected wave LR1, and the second reflected wave LR2 are illustrated as being the same.

[0047] As shown in FIG. 2, the decorative material 10 for a moving body includes a decorative sheet 20 and a cover member 40. The decorative sheet 20 has a first surface 21 and a second surface 22 facing the first surface 21. In the illustrated example, the first surface 21 of the decorative sheet 20 forms the first surface 11 of the decorative material 10 for a moving body. The cover member 40 is disposed facing the second surface 22 of the decorative sheet 20. More specifically, the cover member 40 has a first surface 41 facing the decorative sheet 20 and a second surface 42 facing the first surface 41. The second surface 42 of the cover member 40 forms the second surface 12 of the decorative material 10 for a moving body.

[0048] Note that the decorative material 10 for a moving body shown in FIG. 2 is illustrated in a flat plate shape. However, the decorative material 10 for a moving body may be curved.

[0049] Hereinafter, the configurations of the cover member 40 and the decorative sheet 20 will be described in detail with reference to FIGS. 3 and 4.

[0050] <<Cover Member>> First, referring to FIG. 3, the cover member 40 will be described. FIG. 3 is a cross-sectional view of the cover member 40 shown in FIG. 2. As shown in FIG. 3, the cover member 40 has a cover base 45 and a hard coat film 50 covering one side surface of the cover base 45. The cover base 45 has a cover substrate 46 and an ultraviolet absorption layer 48 covering one side surface of the cover substrate 46. The cover substrate 46 forms the first surface 41 of the cover member 40.

[0051] <Cover Substrate> The cover substrate 46 is a layer that supports the ultraviolet absorption layer 48 and the hard coat film 50. The cover substrate 46 is a film-like member. The material for forming the cover substrate 46 is not particularly limited as long as it transmits visible light and has sufficient strength to support the ultraviolet absorption layer 48 and the hard coat film 50. For example, organic glass can be used. Examples of organic glass include polycarbonate, polymethyl methacrylate, polyacrylate, polyethylene terephthalate, polyethylene naphthalate, polyolefin, ABS (acrylonitrile butadiene styrene copolymer), etc. Among these organic glasses, polycarbonate is excellent in impact resistance and transparency and is suitable as the material for forming the cover substrate 46.

[0052] <Ultraviolet absorption layer> The ultraviolet absorption layer 48 is a layer containing an ultraviolet absorber. The ultraviolet absorption layer 48 is disposed closer to the second surface 12 side than the cover substrate 46. This can prevent the cover substrate 46 from being discolored by the ultraviolet rays incident on the second surface 12. In the illustrated example, the ultraviolet absorption layer 48 is disposed between the cover substrate 46 and the hard coat film 50. The ultraviolet absorption layer 48 transmits visible light. As the material for forming the ultraviolet absorption layer 48, known materials can be used. The ultraviolet absorption layer 48 can be formed, for example, from an ultraviolet absorber and a binder resin. As the ultraviolet absorber contained in the ultraviolet absorption layer 48, a hydroxyphenyltriazine-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber, titanium oxide, etc. can be used. Also, as the binder resin for forming the ultraviolet absorption layer 48, general-purpose thermoplastic resins, thermosetting resins, and radiation-curable resins, etc. can be used.

[0053] The ultraviolet absorption layer 48 can be formed by applying or transferring the above-described material for forming the ultraviolet absorption layer onto a layer adjacent to the ultraviolet absorption layer 48 (the cover base material 48 in the illustrated example). As methods for applying the material for forming the ultraviolet absorption layer, known coating methods such as gravure coating, gravure reverse coating, gravure offset coating, spinner coating, roll coating, reverse roll coating, kiss coating, whirler coating, dip coating, solid coating by silk screen, wire bar coating, flow coating, comma coating, pour coating, brush coating, spray coating, etc. can be adopted. Further, the ultraviolet absorption layer 48 may be formed by an extrusion molding method. In this case, the ultraviolet absorption layer 48 may be two-color molded together with a layer adjacent to the ultraviolet absorption layer 48 (the cover base material 46 in the illustrated example).

[0054] Note that the ultraviolet absorption layer 48 may be provided on the hard coat film 50. For example, the ultraviolet absorption layer 48 may be provided between the layers constituting the hard coat film 50 described later (between the hard coat layer 52 and the adhesion improvement layer 54, or between the adhesion improvement layer 54 and the adhesive layer 56). Further, any of the cover base material 46 or the layers constituting the hard coat film 50 described later may contain an ultraviolet absorber. In these cases, the cover base 45 and the hard coat film 50 may not include the ultraviolet absorption layer 48.

[0055] Furthermore, the ultraviolet absorption layer 48 may contain stabilizers such as antioxidants and HALS (hindered amine light stabilizer). Thereby, it is possible to suppress the generation of radicals in the cover base material 46, and it is possible to suppress the decomposition of the resin contained in the cover base material 46 by the radicals and the deterioration of the cover base material 46.

[0056] As the antioxidant contained in the ultraviolet absorption layer 48, butylated hydroxytoluene (BHT), a low-volatility phenolic antioxidant, dilauryl thiodipropionate (DLTP) which is a peroxide decomposer, distearyl thiodipropionate (DSTP), etc. can be adopted. Also, as HALS, a hindered amine-based radical scavenger, a piperidine-based radical scavenger, etc. can be adopted.

[0057] Note that any of the cover base material 46 or the layers constituting the hard coat film 50 described later may contain the above antioxidant or the above stabilizer. For example, any of the cover base material 46 or the layers constituting the hard coat film 50 described later may contain an ultraviolet absorber and the above antioxidant or the above stabilizer. In this case, the cover base 45 and the hard coat film 50 may not contain the ultraviolet absorption layer 48.

[0058] <Hard coat film> The hard coat film 50 includes a hard coat layer 52, an adhesion improvement layer 54, and an adhesive layer 56. The hard coat layer 52 is a layer that forms the second surface 42 of the cover member 40 (therefore, the second surface 12 of the moving body decorative material 10 using the cover member 40) and has scratch resistance. The adhesive layer 56 is a layer having an adhesive function. The adhesive layer 56 is disposed facing one side surface of the cover base 45 to adhere the hard coat film 50 to the cover base 45. The adhesion improvement layer 54 is a so-called primer layer. The adhesion improvement layer 54 is disposed between the hard coat layer 52 and the adhesive layer 56 to improve the adhesion between the hard coat layer 52 and the adhesive layer 56. The hard coat layer 52, the adhesion improvement layer 54, and the adhesive layer 56 each transmit visible light.

[0059] As the material constituting the hard coat layer 52, a cured resin can be adopted. The cured resin is not particularly limited, and a cured product of a resin contained in a general hard coat layer 52 can be adopted. Examples of such cured resins include cured products of polyester resins, epoxy resins, polyurethane resins, amino alkyd resins, melamine resins, guanamine resins, urea resins, acrylic resins, polyurethane acrylate resins, acrylic acrylate resins, and mixtures of acrylic acrylate and polydimethylsiloxane. The cured resin may be a cured product obtained by heat-curing a thermoplastic resin, or may be a cured product obtained by curing an ionizing radiation-curable resin by light irradiation.

[0060] The hard coat layer 52 may contain a thermoplastic resin in order to impart flexibility and other physical properties. Further, the hard coat layer may contain various additives as long as its performance is not impaired. Examples of the various additives include scratch-resistant particles, ultraviolet absorbers, light stabilizers, photoinitiators for photopolymerization, polymerization inhibitors, crosslinking agents, antistatic agents, adhesion improvers, antioxidants, leveling agents, thixotropic agents, coupling agents, plasticizers, defoaming agents, fillers, solvents, and the like.

[0061] The hard coat layer 52 can be formed by applying or printing the above-described material for forming the hard coat layer on the transfer substrate 62 described later or on the release layer 64 formed on the transfer substrate 62 and then curing it. The method of applying the material for forming the hard coat layer is not particularly limited, and known coating methods such as dipping method, flow coating method, spraying method, spin coating method, gravure coating method, microgravure coating method, die coating method, slit reverse method, roll coating method, blade coating method, air knife coating method, offset method, bar coating method, etc. can be adopted. Also, as the method of printing the material for forming the hard coat layer, known printing methods such as gravure printing, gravure offset printing, screen printing, etc. can be adopted.

[0062] The thickness of the hard coat layer 52 is not particularly limited and can be appropriately set to a thickness that can exhibit the functions of the hard coat layer 52. The thickness of the hard coat layer 52 is, for example, 1 μm or more and 100 μm or less, preferably 2 μm or more and 50 μm or less, and more preferably 3 μm or more and 30 μm or less.

[0063] As the material constituting the adhesion improvement layer 54, for example, acrylic resins, urethane resins, vinyl chloride-vinyl acetate copolymer resins, polyester resins, chlorinated polyolefin resins, etc. can be adopted, but it is not limited thereto. Further, the adhesion improvement layer 54 may contain additives such as ultraviolet absorbers.

[0064] The adhesion improvement layer 54 is formed by coating the material for forming the adhesion improvement layer described above on the hard coat layer 52 and curing it as necessary. The method of coating the material for forming the adhesion improvement layer is not particularly limited, and the known coating methods described above can be adopted.

[0065] The thickness of the adhesion improvement layer 54 is not particularly limited, but for example, it is 0.1 μm or more and 10 μm or less, preferably 0.2 μm or more and 5 μm or less.

[0066] As the material constituting the adhesive layer 56, heat-sealing resins such as acrylic resins, vinyl chloride-vinyl acetate copolymers, polyamide resins, polyester resins, chlorinated polypropylene, chlorinated rubber, urethane resins, epoxy resins, and styrene resins can be adopted. These resins may be used alone or in combination of two or more according to the materials of the cover substrate 46, the ultraviolet absorption layer 48, etc. From the viewpoints of excellent transparency and improvement in transparency and weather resistance, it is particularly preferable to use an acrylic resin alone as the above heat-sealing resin.

[0067] The adhesive layer 56 is formed by coating the material for forming the adhesive layer described above on the adhesion improvement layer 54. The method of coating the material for forming the adhesive layer is not particularly limited, and the known coating methods described above can be adopted.

[0068] The thickness of the adhesive layer 56 is not particularly limited, but is, for example, 1 μm or more and 100 μm or less, preferably 3 μm or more and 50 μm or less. When the adhesion improvement layer 54 has an adhesive function, the hard coat film 50 may not include the adhesive layer 56.

[0069] <<Decorative sheet>> Next, with reference to FIG. 4, the decorative sheet 20 will be described. FIG. 4 is a cross-sectional view showing the configuration of the decorative sheet 20. The decorative sheet 20 displays a design and imparts design properties to the vehicle interior trim material 10. In the example shown in FIG. 4, the decorative sheet 20 has a sheet base material 24, a design layer 26 and a metal layer 28 provided on the sheet base material 24, an embedding layer 30 that fills the unevenness of the design layer 26 and the metal layer 28, and a diffusion layer 32 provided on the embedding layer 30. In the example shown in FIG. 4, the sheet base material 24, the design layer 26, the metal layer 28, the embedding layer 30, and the diffusion layer 32 are laminated in this order. The sheet base material 24 forms the first surface 21 of the decorative sheet 20 (the first surface 11 of the vehicle interior trim material 10). The diffusion layer 32 forms the second surface 22 of the decorative sheet 20.

[0070] <Sheet base material> The sheet base material 24 is a layer that supports the other layers (the design layer 26, the metal layer 28, the embedding layer 30, and the diffusion layer 32) of the decorative sheet 20. The sheet base material 24 is a film-like member. As the material constituting the sheet base material 24, any material may be used as long as it transmits visible light and has appropriate supportability. For example, acrylic ester, ABS, polyvinyl chloride, polymethyl methacrylate, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polystyrene, cyclic polyolefin, etc. can be adopted. When the vehicle interior trim material 10 is molded to conform to a three-dimensional curved surface, as the material constituting the sheet base material 24, acrylic ester, ABS, or polyvinyl chloride is preferable. This is because acrylic ester, ABS, and polyvinyl chloride can be stretched by applying heat, enabling TOM (three dimension overlay method) molding and pressure air molding.

[0071] The thickness of the sheet base material 24 is not particularly limited as long as it can appropriately support the other layers 26, 28, 30, 32 of the decorative sheet 20, but is preferably, for example, 5 μm or more. When the decorative material 10 for a moving body is molded to conform to a three-dimensional curved surface, the thickness of the sheet base material 24 is preferably 500 μm or less.

[0072] <Design layer> The design layer 26 forms the design displayed by the decorative sheet 20. The design layer 26 is located between the first surface 21 and the second surface 22 of the decorative sheet 20. FIG. 5 shows a plan view of the design layer 26. Further, FIG. 6 shows a cross section along the line A-A of the design layer 26 shown in FIG. 5. As shown in FIG. 5, the design layer 26 includes unit elements 34 that function as convex mirrors. In the illustrated example, the design layer 26 includes a plurality of unit elements 34 that function as convex mirrors. According to this design layer 26, the range reflected in the unit element 34 is wider than the specular reflection surface. For this reason, the observer feels that the unit element 34 functioning as a convex mirror is located deeper than the actual position of the design layer 26. That is, the design layer 26 can display a design with a sense of depth deeper than the thickness of the design layer 26. Therefore, while reducing the thickness of the design layer 26, a three-dimensional effect greater than the thickness of the design layer 26 can be expressed. Thereby, a rich design expression with a sense of luxury can be realized.

[0073] In the illustrated example, the unit element 34 includes a Fresnel lens portion 35 having a Fresnel lens structure and functioning as a Fresnel lens. Thereby, the thickness of the design layer 26 can be reduced, and the thickness of the decorative material 10 for a moving body can be reduced. As a result, the electromagnetic wave emitted from the sensor 2 can transmit through the decorative material 10 for a moving body with a high transmittance. As shown in FIG. 6, unevenness 36 forming the Fresnel lens structure is formed in the Fresnel lens portion 35. The height T36 and the interval P36 of the unevenness 36 are preferably 200 μm or less so that the electromagnetic wave emitted from the sensor 2 can transmit through the decorative material 10 for a moving body with a high transmittance. Further, the height T36 of the unevenness 36 forming the Fresnel lens structure is preferably constant in the plane of the design layer 26. Thereby, the metal layer 28 described later can be formed uniformly in the plane of the design layer 26.

[0074] In addition, in the examples shown in FIGS. 5 and 6, the Fresnel lens structure is configured as a circular Fresnel lens structure, but it is not limited thereto. The Fresnel lens structure may be configured as a linear Fresnel lens structure.

[0075] In the illustrated example, the decorative material 10 for a moving body is used as an exterior material. Here, usually, when observing the exterior of the moving body 1 at an exhibition or the like, the observer observes from about 1 m to 5 m away from the exterior. Correspondingly, when the decorative material 10 for a moving body is used as an exterior material, the focal length of the convex mirror of each unit element 34 is preferably +0.5 mm or more and +350 mm or less, more preferably +2 mm or more and +250 mm or less, and most preferably +5 mm or more and +150 mm or less, with the direction from the second surface 22 to the first surface 21 of the decorative sheet 20 being the positive direction. Thereby, the design layer 26 can effectively show a sense of depth to the observer.

[0076] On the one hand, when usually observing the interior of the moving body 1 from inside the moving body 1, the observer observes at a distance of about 0.3 m to 1 m from the interior. Correspondingly, when the decorative material 10 for the moving body is used as the interior material, the focal length of the convex mirror of each unit element 34 is preferably +0.5 mm or more and +350 mm or less, more preferably +2 mm or more and +250 mm or less, and most preferably +5 mm or more and +150 mm or less, with the direction from the second surface 22 to the first surface 21 of the decorative sheet 20 being the positive direction. Thereby, the design layer 26 can effectively express a sense of depth to the observer.

[0077] Note that the planar shape of the unit element 34 is not limited to the quadrilateral shape shown in FIG. 5. As the planar shape of the unit element 34, other polygonal shapes such as a triangular shape, a pentagonal shape, a hexagonal shape, an octagonal shape, etc., a shape with chamfered corners of the polygonal shape, a circular shape, a shape including a curved contour such as an elliptical shape, etc. can be adopted.

[0078] Also, the arrangement method of the plurality of unit elements 34 in the plane of the design layer 26 is not limited to the example shown in FIG. 5. For example, when each unit element 34 is a quadrilateral shape, the plurality of unit elements 34 may be arranged as shown in FIG. 7A. Also, when each unit element 34 is a hexagonal shape, the plurality of unit elements 34 may be arranged as shown in FIG. 7B.

[0079] Further, the dimension of the unit element 34 in the plan view of the design layer 26 (the diameter of the circumscribed circle of the unit element 34 in the plan view of the design layer 26) is not particularly limited and can be appropriately set according to the design represented by the design layer 26. When a plurality of unit elements 34 are arranged without gaps in the plan view of the design layer 26 as shown in FIGS. 5, 7A, and 7B, the dimension of the unit element 34 is preferably 3 mm or more and 200 mm or less. This is for the following reasons. That is, when the dimension of the unit element 34 is less than 3 mm, it becomes difficult to identify each unit element 34 with the naked eye. For this reason, even if a plurality of unit elements 34 are combined, the design by the combination of the plurality of unit elements 34 cannot be effectively displayed. Further, when the dimension of the unit element 34 is larger than 200 mm, the dimension of the unit element 34 with respect to the dimension of the design layer 26 in the plan view is too large, and there is a risk that the degree of freedom in arranging the unit elements 34 within the design layer 26 decreases. For this reason, there is a risk that it becomes difficult to arrange a plurality of unit elements 34 as desired to display a desired design. In the illustrated example, the moving body decorative material 10 is used as an exterior material, but even when the moving body decorative material 10 is used as an interior material, for the same reason, the dimension of the unit element 34 is preferably 3 mm or more and 200 mm or less.

[0080] In addition, when the moving body decorative material 10 is used as an exterior material, the dimension of the unit element 34 is more preferably 10 mm or more and 200 mm or less, and most preferably 20 mm or more and 100 mm or less. When the moving body decorative material 10 is used as an interior material, the dimension of the unit element 34 is more preferably 3 mm or more and 40 mm or less, and most preferably 6 mm or more and 20 mm or less.

[0081] As the material constituting the design layer 26, the same material as the sheet base material 24, an ultraviolet curable resin, an ionizing radiation curable resin, or the like can be adopted. The ionizing radiation curable resin is, for example, an electron beam curable resin. In particular, the ultraviolet curable resin and the electron beam curable resin have extensibility. Therefore, the design layer 26 formed of the ultraviolet curable resin or the electron beam curable resin can be easily shaped to form the unevenness 36 of the Fresnel lens structure. Further, if the design layer 26 is formed of the ultraviolet curable resin or the electron beam curable resin, when the cover member 40 is attached to the decorative sheet 20, the possibility of the unevenness 36 of the design layer 26 being crushed is suppressed. In addition, the design layer 26 produced by the ultraviolet curable resin or the electron beam curable resin has little possibility of inhibiting the molding of the moving body decorative material 10 when the moving body decorative material 10 is molded to be applied to a three-dimensional curved surface.

[0082] In the illustrated example, the design layer 26 is formed separately from the sheet base material 24, but it is not limited to this. The design layer 26 may be formed integrally with the sheet base material 24.

[0083] When the design layer 26 is formed separately from the sheet base material 24, the design layer 26 is formed, for example, as follows. That is, a mold corresponding to the shape of the design layer 26 is prepared, a liquid ultraviolet curable resin or an electron beam curable resin is applied to the mold, and the mold is pressed against the base material 24. Next, ultraviolet rays or electron beams are irradiated to cure the resin in the mold, and the mold is removed from the cured resin. Thereby, the design layer 26 is formed on the sheet base material 24.

[0084] On the other hand, when the design layer 26 is formed integrally with the sheet base material 24, the sheet member 24 and the design layer 26 can be formed, for example, by a hot embossing method or an injection molding method. In the hot embossing process, a mold corresponding to the shape of the design layer 26 is pressed against one surface of the base material that has been heated and softened, and the design layer 26 is formed on one side of the base material. Then, the other side of the base material is used as the sheet base material 24. In injection molding, a thermoplastic resin is heated and melted, and the melted resin is filled into a mold corresponding to the shapes of the sheet base material 24 and the design layer 26 and cooled to form a member in which the sheet base material 24 and the design layer 26 are integrated.

[0085] <Metal layer> The metal layer 28 is a layer for improving the reflectivity on the surface where the unevenness 36 of the Fresnel lens structure of the design layer 26 is formed. The metal layer 28 is made of one or more of aluminum (Al), zinc oxide (ZnO), titanium dioxide (TiO2), indium (In), magnesium (Mg), tin (Sn), titanium (Ti), lead (Pb), zirconium (Zr), yttrium (Y), etc. as raw materials, and can be formed by physical vapor deposition (PVD) methods such as vacuum evaporation, sputtering, and ion plating, chemical vapor deposition (CVD) methods such as plasma chemical vapor deposition, thermal chemical vapor deposition, and photo-chemical vapor deposition, etc.

[0086] In the illustrated example, since the decorative material 10 for a moving body is arranged facing the sensor 2, the metal layer 28 is preferably formed of a material capable of transmitting the electromagnetic wave emitted from the sensor 2. Alternatively, as shown in FIG. 8, the metal layer 28 may include a plurality of metal grain portions 28a capable of reflecting visible light, and gaps 28b through which electromagnetic waves can pass may be provided between the plurality of metal grain portions. In other words, the metal layer 28 may have a so-called island structure. Note that FIG. 8 is an electron micrograph of the metal layer 28 having an island structure. Further, as will be described later, when the decorative sheet 20 includes a layer observed through the metal layer 28 such as a pattern layer or a coloring layer, the metal layer 28 is preferably formed of a material capable of transmitting visible light.

[0087] Also, in the illustrated example, the metal layer 28 is formed along the surface where the unevenness 36 of the design layer 26 is formed, but it is not limited thereto. The metal layer 28 may be formed so as to fill the unevenness 36 of the design layer 26.

[0088] The thickness of the metal layer 28 is not particularly limited as long as it can improve the reflectivity of visible light, but for example, it is 0.01 μm or more and 10 μm or less.

[0089] <Embedded layer> The embedding layer 30 is a layer for filling the unevenness of the design layer 26 and the metal layer 28. By filling the unevenness of the design layer 26 and the metal layer 28 with the embedding layer 30, the risk that the unevenness 36 of the design layer 26 will be crushed when the cover member 40 is attached to the decorative sheet 20 or the like is suppressed. The material for forming the embedding layer 30 is not particularly limited as long as it is a material capable of transmitting visible light. For example, an ultraviolet curable resin, an electron beam curable resin, a room temperature curable resin, or the like can be adopted. Further, the embedding layer 30 can also be formed by an adhesive for adhering the metal layer 28 and the diffusion layer 32. When the metal layer 28 is formed so as to fill the unevenness 36 of the design layer 26, the decorative sheet 20 may not include the embedding layer 30.

[0090] <Diffusion layer> The diffusion layer 32 is a layer for diffusing the visible light reflected by the metal layer 28. The diffusion layer 32 is disposed so as to overlap with the unit element 34 of the design layer 26 in a plan view of the decorative sheet 20. By diffusing the light reflected by the metal layer 28 in the diffusion layer 32, the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the vehicle body decorative member 10 can be widened. Further, by diffusing the light by the diffusion layer 32, the uniform light is emitted from the second surface 12 of the vehicle body decorative member 10. Therefore, even when the vehicle body decorative member 10 is irradiated with strong light, the risk that the strong light is directly reflected by the metal layer 28 and emitted from the second surface 12 is suppressed.

[0091] The diffusion layer 32 contains a binder resin and a light diffusing material dispersed in the binder resin. The diffusion layer 32 can diffusely reflect light isotropically by utilizing the refractive index difference between the binder resin and the light diffusing material or by utilizing the reflectivity of the light diffusing material.

[0092] Examples of the binder resin contained in the diffusion layer 32 include known materials such as chlorine-based resins, urethane resins, acrylic urethane resins, acrylic resins, polyester resins, polyamide resins, butyral resins, polystyrene resins, nitrocellulose resins (nitrocellulose), and cellulose acetate resins.

[0093] The light diffusing material contained in the diffusion layer 32 may be appropriately selected according to the required light diffusibility and the like of the diffusion layer 32. Examples of the light diffusing material include organic particles such as plastic beads and inorganic particles such as silica. Examples of the plastic beads include melamine beads, acrylic beads, acrylic-styrene beads, polycarbonate beads, polyethylene beads, polystyrene beads, vinyl chloride beads, etc., among which acrylic beads are preferred. The light diffusing material may be air bubbles.

[0094] The diffusion layer 32 can be formed by applying a liquid binder resin in which the light diffusing material is dispersed onto the embedding layer 30. The diffusion layer 32 can also be formed by extrusion molding a binder resin in which the light diffusing material is dispersed. The extruded diffusion layer 32 and the embedding layer 30 can be joined via an adhesive or a pressure-sensitive adhesive, or by thermally fusing the diffusion layer 32 and the embedding layer 30.

[0095] <Other Layers> In addition to the layers 24, 26, 28, 30, and 32 described above, the decorative sheet 20 may include a pattern layer. The pattern layer is, for example, a layer that displays patterns such as characters (product names, product displays, quality displays, etc.), graphics, photographs, symbols, patterns, and designs. The pattern layer is formed by printing a pattern on another layer of the decorative sheet (for example, the diffusion layer 32 or the sheet base material 24) using ink prepared by mixing a colorant such as a dye or a pigment with a binder resin or a solvent. As a printing method for printing the pattern layer, for example, known printing methods such as gravure printing, offset printing, letterpress printing, and silk screen printing can be adopted. Note that the pattern layer may be included in the cover member 40.

[0096] Further, the decorative sheet 20 may include a colored layer. By including a colored layer in the decorative sheet 20, the vehicle-use decorative material 10 can be given a desired color. The colored layer is formed by applying an ink similar to the ink for forming the pattern layer to another layer of the decorative sheet 20 (for example, the sheet base material 24). As a method of applying the ink for forming the colored layer, the above-described known printing method can be adopted. Note that, instead of the decorative sheet 20 including a colored layer, the sheet base material 24, the design layer 26, the embedded layer 30, or the diffusion layer 32 may contain a colorant. Alternatively, any layer of the cover member 40 (for example, the cover base material 46) may contain a colorant.

[0097] <<Method for manufacturing a vehicle-use decorative material>> The vehicle-use decorative material 10 described above can be manufactured as follows. First, an example of a method for manufacturing the cover member 40 will be described.

[0098] First, as shown in FIG. 9, a transfer film 60 for manufacturing a cover member is manufactured. Specifically, a release layer 64, a hard coat layer 52, an adhesion improvement layer 54, and an adhesive layer 56 are laminated in this order on a flat transfer base material 62. The transfer base material 62 is a member that is peeled off together with the release layer 64 when the hard coat film 50 is transferred to the cover base 45. As the transfer base material 62, for example, those generally used as a release layer of a transfer film such as a polyester resin film or a polyolefin resin film can be adopted. The release layer 64 is formed using a silicone resin or the like. By disposing the release layer 64 between the transfer base material 62 and the hard coat film 50, the transfer base material 62 can be easily peeled off from the hard coat film 50. Note that, instead of forming the release layer 64 on the transfer base material 62, a known release treatment may be performed on the surface of the transfer base material 62. In this case as well, the transfer base material 62 can be easily peeled off from the hard coat film 50.

[0099] Further, a cover base 45 is prepared. The cover base 45 is manufactured by forming an ultraviolet absorption layer 48 on one side surface of the cover base material 46.

[0100] Next, the hard coat film 50 is transferred from the transfer film 60 for manufacturing the cover member to the cover substrate 45. Thereby, the cover member 40 is completed. Specifically, first, the adhesive layer 56 of the transfer film 60 is adhered to the ultraviolet absorption layer 48 of the cover substrate 45. Then, the transfer base material 62 and the release layer 64 of the transfer film 60 are peeled off from the hard coat film 50. When the cover substrate 45 does not include the ultraviolet absorption layer 48, after the adhesive layer 56 of the transfer film 60 is adhered to one side surface of the cover substrate 46, the transfer base material 62 and the release layer 64 of the transfer film 60 are peeled off from the hard coat film 50.

[0101] Next, an example of a method for manufacturing the decorative sheet 20 will be described. First, the sheet substrate 24 is prepared. As shown in FIG. 4, a design layer 26 is formed on one side surface of the sheet substrate 24. Then, a metal layer 28 is formed on the surface where the unevenness 36 is formed on one side of the design layer 26. Then, an embedding layer 30 is formed on one side surface of the metal layer 28 so as to fill the unevenness of the design layer 26 and the metal layer 28. Then, a diffusion layer 32 is formed on one side surface of the embedding layer 30.

[0102] Next, the first surface 41 of the obtained cover member 40 and the second surface 22 of the decorative sheet 20 are adhered. In the illustrated example, the cover substrate 46 of the cover member 40 is adhered to the diffusion layer 32 of the decorative sheet 20. Thereby, the decorative material 10 for a moving body is completed.

[0103] <<<Modification of the First Embodiment>>> In the above-described example, the design layer 26 includes the unit element 34 that functions as a convex mirror, but is not limited thereto. The design layer 26 may include the unit element 34 that functions as a concave mirror. According to such a design layer 26, the position of the reflection surface of the external light reflected in the unit element 34 is felt to be different from the actual position of the design layer 26. Therefore, while reducing the thickness of the design layer 26, a three-dimensional effect greater than the thickness of the design layer can be expressed. Thereby, a rich design expression with a sense of luxury can be realized.

[0104] When the design layer 26 includes the unit element 34 that functions as a concave mirror, and when the decorative material 10 for a moving body is used as an exterior material, the focal length of the concave mirror of the unit element 34 is preferably -350 mm or more and -0.5 mm or less, more preferably -250 mm or more and -2 mm or less, and most preferably -150 mm or more and -5 mm or less, with the direction from the second surface 22 to the first surface 21 of the decorative sheet 20 being the positive direction. Thereby, the design layer 26 can effectively show a three-dimensional effect to the observer. Note that the dimensions of the unit element 34 are not particularly limited and can be appropriately set according to the design expressed by the design layer 26.

[0105] On the other hand, when the design layer 26 includes the unit element 34 that functions as a concave mirror, and when the decorative material 10 for a moving body is used as an interior material, the focal length of the concave mirror of the unit element 34 is preferably -350 mm or more and -0.5 mm or less, more preferably -250 mm or more and -2 mm or less, and most preferably -150 mm or more and -5 mm or less. Thereby, the design layer 26 can effectively show a three-dimensional effect to the observer. Also in this case, the dimensions of the unit element 34 are not particularly limited and can be appropriately set according to the design expressed by the design layer 26.

[0106] Also, in the above-described example, the surface on which the Fresnel lens structure of the design layer 26 is formed (the surface on which the unevenness 36 is formed) faces the second surface 22 side of the decorative sheet 20, but it is not limited to this. As shown in FIG. 9, the surface on which the Fresnel lens structure of the design layer 26 is formed may face the first surface 21 side of the decorative sheet 20. In this case, as shown in FIG. 9, the diffusion layer 32 may be disposed on one side surface of the sheet base material 24, and the design layer 26, the metal layer 28, and the embedded layer 30 may be formed in this order on the other side surface of the sheet base material 24. In this case, the embedded layer 30 forms the first surface 21 of the decorative sheet 20.

[0107] <<<Second Embodiment>>> Next, referring to FIGS. 11 to 20, a second embodiment of the present disclosure will be described. The decorative material for a moving body shown in FIGS. 11 to 20 is different from the decorative material 10 for a moving body shown in FIGS. 1 to 9 in that the design layer 126 does not have a Fresnel lens structure. Other configurations are substantially the same as those of the decorative material 10 for a moving body shown in FIGS. 1 to 9. In the second embodiment shown in FIGS. 11 to 18, the same parts as those of the decorative material 10 for a moving body shown in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0108] <Design layer> Hereinafter, referring to FIGS. 11 to 20, the design layer 126 of the second embodiment will be described. FIG. 11 is a plan view of the design layer 126 of the decorative material for a moving body according to the second embodiment. FIG. 12 is an enlarged view showing a unit element 134 of the design layer 126 shown in FIG. 11. FIGS. 13 and 14 are cross-sectional views taken along line B-B and line C-C of the design layer shown in FIG. 12, respectively. FIGS. 15 to 20 are diagrams corresponding to FIG. 12 and showing modified examples of the design layer 126 shown in FIG. 11.

[0109] As understood from FIGS. 11 to 14, the design layer 126 includes unit elements 134 in which irregularities 136 forming a group of parallel straight lines are formed in a plan view. Such a design layer 126 can reflect light according to the extending direction of the group of parallel straight lines and can express a design according to the extending direction of the group of parallel straight lines. In addition, the design layer 126 can express different designs depending on the direction of observing the decorative material 10 for a moving body. In the illustrated example, the design layer 126 includes a plurality of unit elements 134. The unit elements 134 adjacent to each other have different extending directions of the group of parallel straight lines in a plan view. Such a design layer 126 can reflect light in different manners for adjacent unit elements 134, and thus can express a complex design.

[0110] The widths W137 and W138 of the concave portion 137 and the convex portion 138 in the parallel straight line group can be appropriately set according to the design expressed by the design layer 126. Also, the widths W137 of the concave portions 137 in the parallel straight line group may be equal to each other or different from each other within the plane of the unit element 134. Similarly, the widths W138 of the convex portions 138 in the parallel straight line group may be equal to each other or different from each other within the plane of the unit element 134. However, from the viewpoint of preventing the generation of iridescence on the surface of the moving body decorative material 10, the widths W137 and W138 of the concave portion 137 and the convex portion 138 are preferably 10 μm or more. Further, when the moving body decorative material 10 is arranged facing the sensor 2, the widths W137 and W138 of the concave portion 137 and the convex portion 138 are preferably 200 μm or less so that the electromagnetic wave emitted from the sensor 2 can transmit through the moving body decorative material 10 at a high transmittance rate. Furthermore, from the viewpoint of suppressing the visual recognition of the unevenness 136 of the parallel straight line group by the naked eye, the widths W137 and W138 of the concave portion 137 and the convex portion 138 are preferably 80 μm or less.

[0111] Also, the height T136 of the unevenness 136 forming the parallel straight line group is preferably 200 μm or less so that the electromagnetic wave emitted from the sensor 2 can transmit through the moving body decorative material 10 at a high transmittance rate. Also, the height of the unevenness 136 forming the parallel straight line group is preferably constant within the plane of the design layer 126. Thereby, the metal layer 28 can be formed uniformly within the plane of the design layer 126.

[0112] The dimension of the unit element 134 in the plan view of the design layer 126 (the diameter of the circumscribed circle of the unit element 134 in the plan view of the design layer 126) is not particularly limited and can be appropriately set according to the design represented by the design layer 126. However, when a plurality of unit elements 134 are arranged without gaps in the plan view of the design layer 126 as shown in FIG. 11, the dimension of the unit element 134 is preferably 3 mm or more and 200 mm or less. This is for the following reasons. That is, when the dimension of the unit element 134 is less than 3 mm, it becomes difficult to identify each unit element 134 with the naked eye. For this reason, even when a plurality of unit elements 134 are combined, the design by the combination of the plurality of unit elements 134 cannot be effectively displayed. Further, when the dimension of the unit element 134 is larger than 200 mm, the dimension of the unit element 134 with respect to the dimension of the design layer 126 in the plan view is too large, and there is a risk that the degree of freedom in arranging the unit elements 134 within the design layer 126 decreases. For this reason, there is a risk that it becomes difficult to arrange a plurality of unit elements 134 as desired to display a desired design. In the illustrated example, the moving body decorative material 10 is used as an exterior material. However, even when the moving body decorative material 10 is used as an interior material, for the same reason, the dimension of the unit element 134 is preferably 3 mm or more and 200 mm or less.

[0113] In addition, when the moving body decorative material 10 is used as an exterior material, the dimension of the unit element 134 is more preferably 10 mm or more and 200 mm or less, and most preferably 20 mm or more and 100 mm or less. Further, when the moving body decorative material 10 is used as an interior material, the dimension of the unit element 134 is more preferably 3 mm or more and 40 mm or less, and most preferably 6 mm or more and 20 mm or less.

[0114] In the example shown in FIG. 11, in the plan view of the design layer 126, the shape of each unit element 134 is a quadrilateral, and the extending direction of the parallel straight line group is along any side of the unit element 134, but it is not limited thereto. As shown in FIGS. 15 and 16, in the plan view of the design layer 126, the extending direction of the parallel straight line group may be a direction intersecting each side of the unit element 134. Further, the planar shape of the unit element 134 is not limited to the quadrilateral shape shown in FIGS. 11 to 16. As the planar shape of the unit element 134, other polygonal shapes such as a triangular shape, a pentagonal shape, a hexagonal shape, an octagonal shape, etc., a shape with chamfered corners of the polygonal shape, a circular shape, a shape including a curved contour such as an elliptical shape, etc. can be adopted.

[0115] Also, as shown in FIG. 17, the shapes of the plurality of unit elements 134 may be different from each other. Further, as shown in FIGS. 18 to 19, the unit element 134 may be formed with concavities and convexities forming a parallel curve group in the plan view. In particular, as shown in FIG. 19, when the concavities and convexities formed in the unit element 134 form a concentric circle group in the plan view, the design layer 126 can display the same design as the design layer 26 shown in FIG. 5. Also, as shown in FIG. 20, the design layer 126 may include a unit element 134 formed with concavities and convexities forming a parallel straight line group in the plan view and a unit element 134 formed with concavities and convexities forming a parallel curve group in the plan view.

[0116] Such a design layer 126 can be manufactured by the same method using the same material as the design layer 26 shown in FIG. 5. Also, the design layer 126 may be integrally formed with the sheet base material 24.

[0117] <<<Third Embodiment>>> Next, with reference to FIGS. 21 to 25, a third embodiment of the present disclosure will be described. The decorative material 210 for a moving body shown in FIG. 21 is different from the decorative material 10 for a moving body shown in FIGS. 1 to 9 in that the decorative sheet 220 does not include a diffusion layer, and irregularities 253 are formed on the surface of the hard coat layer 252 of the cover member 240. Other configurations are substantially the same as those of the decorative material 10 for a moving body shown in FIGS. 1 to 9. In the third embodiment shown in FIGS. 21 to 25, the same reference numerals are given to the same parts as those of the decorative material 10 for a moving body and the transfer film 60 for producing the cover member shown in FIGS. 1 to 9, and detailed description thereof will be omitted.

[0118] FIG. 21 is a cross-sectional view showing the configuration of the decorative material 210 for a moving body according to the third embodiment. In the example shown in FIG. 21, the decorative sheet 220 does not include a diffusion layer. Instead, irregularities 253 are formed on the surface of the hard coat layer 252 of the cover member 240 (the surface forming the second surface 12 of the decorative material 210 for a moving body). The hard coat layer 252 having irregularities 253 formed on its surface has the same function as the diffusion layer 32. That is, such a hard coat layer 252 can diffuse the light reflected by the metal layer 28 and widen the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the decorative material 210 for a moving body. Further, since the light is diffused by the hard coat layer 252, the uniform light is emitted from the second surface 12 of the decorative material 210 for a moving body. Furthermore, since the irregularities 253 are formed on the surface of the hard coat layer 252, the gloss of the decorative material 210 for a moving body can be suppressed. In other words, due to the irregularities 253, the decorative material 210 for a moving body can exhibit a matte texture.

[0119] The hard coat layer 252 having irregularities 253 formed thereon can be produced by adding an agglomerated filler to the above-described material for forming the hard coat layer.

[0120] Alternatively, as shown in FIG. 22, by forming irregularities 265 on the other side surface of the release layer 264 of the transfer film 260 for manufacturing the cover member, a hard coat layer 252 having irregularities 253 can be formed. Specifically, on the transfer base material 62, the above-described release layer forming material is applied, and irregularities 265 are formed on the surface of the applied release layer forming material by a known method such as embossing. Next, the hard coat layer 252 is formed on the surface of the release layer 264 on which the irregularities 265 are formed in this manner. Then, the adhesion improvement layer 54 is formed on the hard coat layer 252, and the adhesive layer 56 is formed on the adhesion improvement layer 54. By transferring the hard coat film 250 from the transfer film 260 thus obtained to the cover base 45, a cover member 240 having irregularities 253 formed on the surface of the hard coat layer 252 can be obtained. Note that the release layer 264 having irregularities 265 can also be manufactured by adding an agglomerated filler to the above-described release layer forming material.

[0121] Alternatively, as shown in FIG. 23, a shaping layer 366 having irregularities 367 may be formed on the transfer base material 62 of the transfer film 360 for manufacturing the cover member, and the release layer 64 and the hard coat film 250 may be formed on the surface on which the irregularities 367 are formed. In this case, irregularities 253 corresponding to the irregularities 367 of the shaping layer 366 can be formed on the surface of the hard coat layer 252.

[0122] Alternatively, as shown in FIG. 24, unevenness 463 is formed on the surface of the transfer base material 462 of the transfer film 460 for manufacturing the cover member, which is opposite to the surface facing the hard coat layer 252, so that the hard coat layer 252 having unevenness 253 can be manufactured. Specifically, a transfer base material 462 having unevenness 463 is prepared, and a release layer 64 and a hard coat film 50 are laminated on the surface of the transfer base material 462 opposite to the surface on which the unevenness 463 is formed to manufacture the transfer film 460. Then, the transfer base material 462 is wound up so that the unevenness 463 of the transfer base material 462 faces the hard coat film 50. As a result, the unevenness 463 of the transfer base material 462 is pressed against the hard coat film 50, and unevenness corresponding to the unevenness 463 of the transfer base material 462 is formed on the hard coat film 50 as shown in FIG. 24. As a result, unevenness 253 is formed in the hard coat layer 252. Instead of forming the unevenness 463 on the above surface of the transfer base material 462, a shaping layer having unevenness formed on the above surface of the transfer base material 462 may be provided. The shaping layer can be manufactured using, for example, an anti-blocking agent containing an agglomerating filler.

[0123] <<<Modification of the Third Embodiment>>> Next, with reference to FIG. 26, a modification of the third embodiment of the present disclosure will be described. The cover member 540 shown in FIG. 26 is different from the cover member 240 shown in FIG. 21 in that the hard coat layer 52 has no unevenness and the cover base material 546 has unevenness 545. Other configurations are substantially the same as those of the cover member 240 shown in FIG. 21. In the modification shown in FIG. 26, the same reference numerals are given to the same parts as those of the cover member 240 shown in FIG. 21, and detailed description thereof is omitted.

[0124] FIG. 26 is a cross-sectional view of a cover member 540 according to a modification of the third embodiment. In the cover member 540 shown in FIG. 26, instead of the unevenness 253 being formed in the hard coat layer 52, unevenness 547 is formed on the surface of the cover base material 546 on the side of the hard coat film 50. Such a cover member 540 also has the same function as the cover member 240 including the hard coat layer 252 having the unevenness 253. That is, such a cover base material 546 can diffuse the light reflected by the metal layer 28 of the decorative sheet 220 and widen the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the vehicle-use decorative material 210. Further, since the light is diffused by the cover base material 546, the uniform light is emitted from the second surface 12 of the vehicle-use decorative material 210.

[0125] As a method of forming the unevenness 547 on the cover base material 546, for example, a known method such as a sandblasting method can be adopted. As shown in FIG. 26, when forming the unevenness 547 on the cover base material 546, it is preferable to include an ultraviolet absorber in other layers 52, 54, 56 of the cover member 540 instead of providing an ultraviolet absorption layer on the surface of the cover base material 546 where the unevenness 547 is formed.

[0126] <<<Other Modifications>>> In the above-described examples, the case where the design layer 26 includes the unit element 34 that functions as a convex mirror or a concave mirror, and the case where the design layer 126 includes the unit element 134 in which the unevenness 136 forming a group of parallel straight lines or a group of parallel curves is formed in plan view have been described, but the present invention is not limited thereto. For example, the design layers 26 and 126 may include unit elements in which unevenness forming an embossed hologram is formed. In this case, the vehicle-use decorative materials 10 and 210 can express a design corresponding to the design represented by the embossed hologram of the design layers 26 and 126.

[0127] In the above-described example, the decorative sheets 20 and 220 including the metal layer 28 have been described, but the present invention is not limited thereto. The decorative sheets 20 and 220 may include a refractive index modulation layer that covers the unevenness 36 and 136 of the design layers 26 and 126 instead of the metal layer 28. The refractive index modulation layer is a layer whose refractive index is different from that of the design layers 26 and 126. When the unevenness 36 and 136 of the design layers 26 and 126 are covered by the refractive index modulation layer, a reflective interface is formed between the design layers 26 and 126 and the refractive index modulation layer, and the reflectance of light on the surface of the design layers 26 and 126 can be improved.

[0128] As described above, the vehicle-use decorative material 10 of the above-described embodiment includes a decorative sheet 20 having a first surface 21 and a second surface 22 facing the first surface 21, and a cover member 40 disposed facing the second surface 22 of the decorative sheet 20. The decorative sheet 20 is located between the first surface 21 and the second surface 22 or includes a design layer 26 that forms at least one of the first surface 21 and the second surface 22. The design layer 26 includes unit elements 34 that function as a convex mirror or a concave mirror.

[0129] According to such a vehicle-use decorative material 10, a three-dimensional effect greater than or equal to the thickness of the design layer 26 can be expressed, and a rich design expression with a high-class feeling can be realized.

[0130] In the vehicle-use decorative material 10 of the above-described embodiment, the unit element 34 includes a Fresnel lens portion 35 having a Fresnel lens structure. In this case, the thickness of the design layer 26 can be reduced, and the thickness of the vehicle-use decorative material 10 can be reduced.

[0131] The vehicle-use decorative material 10 of the above-described embodiment is an exterior material. The unit element 34 functions as a convex mirror, and the focal length of the convex mirror is +0.5 mm or more and +350 mm or less, preferably +2 mm or more and +250 mm or less, and more preferably +5 mm or more and 150 mm or less. In this case, the design layer 26 can effectively show a three-dimensional effect to an observer.

[0132] Alternatively, the mobile body decorative material 10 of the above-described embodiment is an exterior material. The unit element 34 functions as a concave mirror, and the focal length of the concave mirror is -350 mm or more and -0.5 mm or less, preferably -250 mm or more and -2 mm or less, and more preferably -150 mm or more and -5 mm or less. In this case, the design layer 26 can effectively exhibit a three-dimensional effect to the observer.

[0133] Alternatively, the mobile body decorative material 10 of the above-described embodiment is an interior material. The unit element 34 functions as a convex mirror, and the focal length of the convex mirror is +0.5 mm or more and +350 mm or less, preferably +2 mm or more and +250 mm or less, and more preferably +5 mm or more and +150 mm or less. In this case, the design layer 26 can effectively exhibit a three-dimensional effect to the observer.

[0134] Alternatively, the mobile body decorative material 10 of the above-described embodiment is an interior material. The unit element 34 functions as a concave mirror, and the focal length of the concave mirror is -350 mm or more and -0.5 mm or less, preferably -250 mm or more and -2 mm or less, and more preferably -150 mm or more and -5 mm or less. In this case, the design layer 26 can effectively exhibit a three-dimensional effect to the observer.

[0135] Alternatively, the mobile body decorative material 10 of the above-described embodiment includes a decorative sheet 20 having a first surface 21 and a second surface 22 facing the first surface 21, and a cover member 40 disposed facing the second surface 22 of the decorative sheet 20. The decorative sheet 20 is located between the first surface 21 and the second surface 22 or includes a design layer 126 that forms at least one of the first surface 21 and the second surface 22. The design layer 126 includes unit elements 134 in which unevenness 136 forming a group of parallel straight lines or a group of parallel curves is formed in a plan view.

[0136] According to such a decorative material 10 for a moving body, the design layer 126 can reflect light according to the extending direction of a group of parallel straight lines or a group of parallel curves, and can express a design corresponding to the extending direction of the group of parallel straight lines or the group of parallel curves. Further, the design layer 126 can express different designs depending on the direction of observing the decorative material 10 for a moving body.

[0137] Further, in the decorative material 10 for a moving body of the above-described embodiment, the design layer 126 includes a plurality of unit elements 134. The extending directions of the groups of parallel straight lines or the groups of parallel curves of the unit elements 134 adjacent to each other are different in plan view. In this case, since the design layer 126 reflects light in different modes by the adjacent unit elements 134, a complex design can be expressed.

[0138] Alternatively, the decorative materials 10, 210 for a moving body of the above-described embodiment include a decorative sheet 20, 220 having a first surface 21 and a second surface 22 facing the first surface 21, and a cover member 40, 240, 540 disposed facing the second surface 22 of the decorative sheet 20, 220. The decorative sheet 20, 220 is located between the first surface 21 and the second surface 22, or includes a design layer 26, 126 that forms at least one of the first surface 21 and the second surface 22. The design layer 26, 126 includes unit elements 34 in which unevennesses constituting an embossed hologram are formed.

[0139] According to such a decorative material 10, 210 for a moving body, the design layer 26, 126 can express a design corresponding to the design expressed by the embossed hologram.

[0140] Further, the decorative materials 10, 210 for a moving body of the above-described embodiment are exterior materials, and the dimensions of the unit elements 34, 134 are 3 mm or more and 200 mm or less, preferably 10 mm or more and 200 mm or less, and more preferably 20 mm or more and 100 mm or less. In this case, a design formed by a combination of a plurality of unit elements 34, 134 can be effectively displayed. Also, it is easy to arrange a plurality of unit elements 34, 134 as desired to display a desired design.

[0141] Alternatively, the decorative materials 10 and 210 for a moving body in the above-described embodiments are interior materials, the dimensions of the unit elements 34 and 134 are 3 mm or more and 200 mm or less, preferably 3 mm or more and 40 mm or less, and more preferably 6 mm or more and 20 mm or less. In this case, a design formed by a combination of a plurality of unit elements 34 and 134 can be effectively displayed. Further, it is easy to arrange a plurality of unit elements 34 and 134 as desired to display a desired design.

[0142] Further, in the decorative material 10 for a moving body in the above-described embodiments, the unit element 34 includes a Fresnel lens portion 35 having a Fresnel lens structure. The decorative sheet 20 further includes a metal layer 28 that covers the Fresnel lens portion 35. In this case, the reflectance of light on the surface where the unevenness 36 of the Fresnel lens structure of the design layer 26 is formed can be improved.

[0143] Further, in the decorative material 210 for a moving body in the above-described embodiments, the decorative sheet 20 further includes a metal layer 28 that covers the unevenness 136. In this case, the reflectance of light on the surface where the unevenness 136 that forms the parallel straight line group or the parallel curve group of the design layer 26 is formed can be improved.

[0144] Further, in the decorative materials 10 and 210 for a moving body in the above-described embodiments, the metal layer 28 is capable of transmitting electromagnetic waves having a wavelength longer than that of visible light. In this case, when the decorative materials 10 and 210 for a moving body are arranged facing the sensor 2 that emits electromagnetic waves, the electromagnetic waves can transmit through the decorative materials 10 and 210 with a high transmittance.

[0145] Further, in the decorative materials 10 and 210 for a moving body in the above-described embodiments, the metal layer 28 includes a plurality of metal particle portions 28a that can reflect visible light, and gaps 28b through which the electromagnetic waves can pass are provided between the plurality of metal particle portions 28a. In this case, when the decorative materials 10 and 210 for a moving body are arranged facing the sensor 2 that emits electromagnetic waves, the electromagnetic waves can transmit through the decorative materials 10 and 210 with a high transmittance.

[0146] Alternatively, in the mobile body decorative material 10 of the above-described embodiment, the unit element 34 includes a Fresnel lens portion 35 having a Fresnel lens structure. The decorative sheet 20 further includes a refractive index modulation layer that covers the Fresnel lens structure. The refractive index of the design layer 26 is different from the refractive index of the refractive index modulation layer. In this case, a reflective interface is formed between the design layer 26 and the refractive index modulation layer, and the reflectance of light on the surface of the design layer 26 can be improved. Therefore, the decorative sheet 20 does not have to include the metal layer 28.

[0147] Alternatively, in the mobile body decorative material 10 of the above-described embodiment, the decorative sheet 20 further includes a refractive index modulation layer that covers the unevenness 136. The refractive index of the design layer 126 is different from the refractive index of the refractive index modulation layer. In this case, a reflective interface is formed between the design layer 126 and the refractive index modulation layer, and the reflectance of light on the surface of the design layer 126 can be improved. Therefore, the decorative sheet 20 does not have to include the metal layer 28.

[0148] Also, in the mobile body decorative material 10 of the above-described embodiment, the decorative sheet 20 is located between the design layers 26 and 126 and the second surface 22, or includes a diffusion layer 32 that forms the second surface 22. In this case, the light passing through the diffusion layer 32 is diffused by the diffusion layer 32, so that the viewing angle at which the design layers 26 and 126 can be visually recognized from the second surface 12 of the mobile body decorative material 10 can be widened. Further, since the light is diffused by the diffusion layer 32, the light that is made uniform is emitted from the second surface 12 of the mobile body decorative material 10. Therefore, even when the mobile body decorative material 10 is irradiated with strong light, the possibility that the strong light is directly emitted from the second surface 12 is suppressed.

[0149] Alternatively, in the mobile body decorative materials 10, 210 of the above-described embodiment, the cover members 40, 240, 540 include a cover base material 46, 546 and a hard coat layer 52, 252 disposed opposite to the cover base material 46, 546. In this case, it is easy to change the texture of the mobile body decorative materials 10, 210 as desired. For example, the mobile body decorative materials 10, 210 can exhibit a matte texture or a shiny texture depending on the presence or absence of the unevenness 253 on the surface of the hard coat layer 252.

[0150] Alternatively, in the vehicle-use decorative material 210 of the above-described embodiment, the cover member 240 includes a cover base material 46 and a hard coat layer 252 disposed opposite to the cover base material, and irregularities 253 are formed on the surface of the hard coat layer 252. In this case, the hard coat layer 252 has the same function as the diffusion layer 32. That is, such a hard coat layer 252 can diffuse the light transmitted through the hard coat layer 252 to widen the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the vehicle-use decorative material 210. Further, since the light is diffused by the hard coat layer 252, the uniform light is emitted from the second surface 12 of the vehicle-use decorative material 210. Furthermore, since the irregularities 253 are formed on the surface of the hard coat layer 252, the gloss of the vehicle-use decorative material 210 can be suppressed. In other words, due to the irregularities 253, the vehicle-use decorative material 210 can exhibit a matte texture.

[0151] Alternatively, in the vehicle-use decorative material 210 of the above-described embodiment, the cover member 540 includes a cover base material 546 and a hard coat layer 52 disposed opposite to the cover base material 546, and irregularities 547 are formed on the surface of the cover base material 546 that faces the hard coat layer 52. In this case, the cover base material 546 has the same function as the diffusion layer 32. That is, such a cover base material 546 can diffuse the light transmitted through the cover base material 546 to widen the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the vehicle-use decorative material 210. Further, since the light is diffused by the cover base material 546, the uniform light is emitted from the second surface 12 of the vehicle-use decorative material 210.

[0152] Also, in the vehicle-use decorative materials 10 and 210 of the above-described embodiment, the cover members 40 and 240 include a cover base material 46, hard coat layers 52 and 252 disposed opposite to the cover base material 46, and an ultraviolet absorption layer 48 disposed between the cover base material 46 and the hard coat layers 52 and 252. In this case, the possibility that the cover base material 46 is discolored by ultraviolet rays can be suppressed.

[0153] Alternatively, in the mobile body decorative materials 10 and 210 of the above-described embodiments, the cover members 40, 240, and 540 include a cover base material 46, 546 and a hard coat layer 52, 252 disposed opposite to the cover base material 46, 546. The cover base material 46 and / or the hard coat layer 52, 252 contains an ultraviolet absorber. In this case, it is possible to suppress the possibility that the cover base materials 46, 546 are discolored by ultraviolet rays.

[0154] Alternatively, in the mobile body decorative materials 10 and 210 of the above-described embodiments, the cover members 40, 240, and 540 include a cover base material 46, 546, a hard coat layer 52, 252 disposed opposite to the cover base material 46, 546, and an adhesion improvement layer 54 disposed between the cover base material 46, 546 and the hard coat layer 52, 252. The adhesion improvement layer 54 contains an ultraviolet absorber. In this case, it is possible to suppress the possibility that the cover base materials 46, 546 are discolored by ultraviolet rays.

[0155] Further, the mobile body decorative materials 10 and 210 of the above-described embodiments are exterior materials disposed facing a sensor 2 that uses electromagnetic waves having a longer wavelength than visible light, and include a first surface 11 disposed facing the sensor 2 and a second surface 12 facing the first surface 11. The thickness between the first surface 11 and the second surface 12 in at least a part thereof is an integral multiple of the half wavelength of the electromagnetic wave. In this case, the electromagnetic wave can transmit through the mobile body decorative materials 10 and 210 with a high transmittance.

[0156] Aspects of the embodiments of the present disclosure are not limited to the above-described individual embodiments, but also include various modifications that can be conceived by those skilled in the art, and the effects of the embodiments of the present disclosure are not limited to the above-described content. That is, various additions, changes, and partial deletions are possible without departing from the conceptual ideas and spirits of the embodiments of the present disclosure derived from the content defined in the claims and their equivalents.

Description of Reference Numerals

[0157] 1 Mobile body 10, 210 Decorative material for mobile body 20 Decorative sheet 24 Sheet substrate 26, 126 Design layer 28 Metal layer 30 Embedded layer 32 Diffusion layer 35 Fresnel lens part 40, 240, 540 Cover member 46 Cover substrate 48 Ultraviolet absorption layer 52, 252 Hard coat layer 54 Adhesion improvement layer 56 Adhesive layer

Claims

1. A decorative sheet having a first surface and a second surface facing the first surface, and a cover member disposed facing the second surface of the decorative sheet, comprising: the decorative sheet includes a design layer located between the first surface and the second surface, or forming at least one of the first surface and the second surface, the design layer includes a plurality of unit elements having unevenness forming a group of parallel straight lines or a group of parallel curves in a plan view, the plurality of unit elements includes unit elements having unevenness forming a group of parallel straight lines, the plurality of unit elements are arranged without gaps, and adjacent unit elements have different extending directions of the group of parallel straight lines or the group of parallel curves in a plan view. A decorative material for a moving body.

2. The moving body decorative material according to claim 1, wherein the extending direction of the unevenness forming the group of parallel straight lines is a direction intersecting each side of the unit element including the group of parallel straight lines.

3. A decorative sheet having a first surface and a second surface facing the first surface, and a cover member disposed facing the second surface of the decorative sheet, comprising: the decorative sheet includes a design layer located between the first surface and the second surface, or forming at least one of the first surface and the second surface, the design layer includes a plurality of unit elements having unevenness forming a group of parallel straight lines or a group of parallel curves in a plan view, adjacent unit elements have different extending directions of the group of parallel straight lines or the group of parallel curves in a plan view, the unevenness forming the group of parallel straight lines or the group of parallel curves has a plurality of convex portions and concave portions arranged alternately, the convex portion has a top surface extending along the sheet surface of the decorative sheet. A decorative material for a moving body.

4. The moving body decorative material according to any one of claims 1 to 3, wherein the design layer further includes unit elements having unevenness forming an embossed hologram.

5. the moving body decorative material is an exterior material, the dimensions of the unit element are 3 mm or more and 200 mm or less. The moving body decorative material according to any one of claims 1 to 4.

6. the moving body decorative material is an interior material, the dimensions of the unit element are 3 mm or more and 200 mm or less. The moving body decorative material according to any one of claims 1 to 4.

7. the decorative sheet further includes a metal layer covering the unevenness. The moving body decorative material according to any one of claims 1 to 6.

8. The decorative material for a moving body according to claim 7, wherein the metal layer is capable of transmitting electromagnetic waves having a wavelength longer than that of visible light.

9. The decorative material for a moving body according to claim 7 or 8, wherein the metal layer includes a plurality of metal particle portions capable of reflecting visible light, and gaps are provided between the plurality of metal particle portions and are capable of transmitting electromagnetic waves having a wavelength longer than that of visible light.

10. The decorative sheet further includes a refractive index modulation layer covering the unevenness, The decorative material for a moving body according to any one of claims 1 to 6, wherein the refractive index of the design layer is different from the refractive index of the refractive index modulation layer.

11. The decorative material for a moving body according to any one of claims 1 to 10, wherein the decorative sheet is located between the design layer and the second surface or includes a diffusion layer forming the second surface.

12. The decorative material for a moving body according to any one of claims 1 to 11, wherein the cover member includes a cover base material and a hard coat layer disposed opposite to the cover base material.

13. The decorative material for a moving body according to claim 12, wherein unevenness is formed on the surface of the hard coat layer.

14. The decorative material for a moving body according to claim 12 or 13, wherein unevenness is formed on the surface of the cover base material facing the hard coat layer.

15. The decorative material for a moving body according to any one of claims 12 to 14, wherein the cover member includes an ultraviolet absorption layer disposed between the cover base material and the hard coat layer.

16. The cover member includes a cover base material and a hard coat layer disposed opposite to the cover base material, The decorative material for a moving body according to any one of claims 1 to 15, wherein the cover base material and / or the hard coat layer contains an ultraviolet absorber.

17. The cover member includes a cover base material, a hard coat layer disposed opposite to the cover base material, and an adhesion improvement layer disposed between the cover base material and the hard coat layer, The decorative material for a moving body according to any one of claims 1 to 16, wherein the adhesion improvement layer contains an ultraviolet absorber.

18. The decorative material for a moving body is an exterior material disposed facing a sensor using electromagnetic waves having a wavelength longer than that of visible light, and includes a first surface disposed facing the sensor and a second surface facing the first surface, The decorative material for a moving body according to any one of claims 1 to 17, wherein the thickness between the first surface and the second surface in at least a part is an integral multiple of the half wavelength of the electromagnetic wave.

19. An electric vehicle equipped with the cosmetic material for a moving body according to any one of Claims 1 to 18.

20. The electric vehicle according to Claim 19, wherein the cosmetic material for a moving body is applied to the front panel of the electric vehicle.

21. Further comprising a sensor using electromagnetic waves having a wavelength longer than visible light, The electric vehicle according to Claim 19 or 20, wherein the sensor is disposed facing the first surface.

22. The height of the unevenness is 200 μm or less, The electric vehicle according to any one of Claims 19 to 21, wherein the interval between the unevenness is 200 μm or less.

Images