JP2022120114A - Decorative material for movable body and electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative material for a movable body, which adds a new aspect of beauty to a movable body.

SOLUTION: A decorative material for a movable body includes: a decorative sheet having a first surface and a second surface facing the first surface; and a cover member provided opposite to the second surface of the decorative sheet. The decorative sheet is positioned between the first and second surfaces or includes a design layer 26 forming at least one of the first and second surfaces. The design layer 26 includes unit elements 34 functioning as a convex or concave mirror.

SELECTED DRAWING: Figure 5

COPYRIGHT: (C)2022,JPO&INPIT

Description

An embodiment of the present disclosure relates to a decorative material for a mobile body and an electric vehicle.

2. Description of the Related Art Conventionally, an automobile having a front grill as disclosed in Patent Document 1 is known. Behind the front grille is a radiator through which coolant flows to cool the engine. Openings are provided in the front grille to allow outside air to cool the radiator. Since the front grill occupies a large area in the front part of the vehicle body, it has a great influence on the design of the automobile.

JP 2016-078664 A

By the way, in recent years, mobile bodies with structures different from conventional ones, such as electric vehicles, have been developed. For example, electric vehicles do not have radiators. Therefore, the electric vehicle does not need to have a front grill on the front portion of the vehicle body. Along with such changes in the structure of mobile bodies, the designs required for mobile bodies have changed significantly.

The 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 mobile body for imparting a new aesthetic appearance to the mobile body.

A decorative material for a moving object according to an embodiment of the present disclosure includes
a decorative sheet having a first surface and a second surface facing the first surface;
a cover member arranged to face 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 convex mirrors or concave mirrors.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The unit element may include a Fresnel lens portion having a Fresnel lens structure.

A decorative material for a mobile object 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, more preferably +5 mm or more and +150 mm or less.

A decorative material for a mobile object 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.

A decorative material for a moving object 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, more preferably +5 mm or more and +150 mm or less.

A decorative material for a moving object 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.

Alternatively, the decorative material for a moving object according to an embodiment of the present disclosure is
a decorative sheet having a first surface and a second surface facing the first surface;
a cover member arranged to face 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 formed with unevenness forming a group of parallel straight lines or a group of parallel curved lines in plan view.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The design layer includes a plurality of unit elements,
Unit elements adjacent to each other may have different directions in which the parallel straight line group or the parallel curved line group extends in plan view.

Alternatively, the decorative material for a moving object according to an embodiment of the present disclosure is
a decorative sheet having a first surface and a second surface facing the first surface;
a cover member arranged to face 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 having unevenness forming an embossed hologram.

A decorative material for a mobile object 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.

A decorative material for a moving object 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.

In the decorative material for a mobile object 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.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The decorative sheet may further include a metal layer covering the unevenness.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The metal layer may be permeable to electromagnetic waves having a longer wavelength than visible light.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The metal layer may include a plurality of metal grain portions capable of reflecting visible light, and gaps through which the electromagnetic wave can pass may be provided between the plurality of metal grain portions.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The unit element includes a Fresnel lens portion having a Fresnel lens structure,
The decorative sheet further includes 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.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The decorative sheet further includes a refractive index modulation layer covering the unevenness,
The refractive index of the design layer and the refractive index of the refractive index modulation layer may be different.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The decorative sheet may include a diffusion layer positioned between the design layer and the second surface or forming the second surface.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The cover member may include a cover base material and a hard coat layer arranged to face the cover base material.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
Concavities and convexities may be formed on the surface of the hard coat layer.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
Concavities and convexities may be formed on the surface of the cover base material facing the hard coat layer.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The cover member may include an ultraviolet absorbing layer disposed between the cover base material and the hard coat layer.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The cover member includes a cover base material and a hard coat layer arranged to face the cover base material,
The cover base material and/or the hard coat layer may contain an ultraviolet absorber.

In the decorative material for a mobile object according to an embodiment of the present disclosure,
The cover member includes a cover base material, a hard coat layer arranged to face the cover base material, and an adhesion improving layer arranged between the cover base material and the hard coat layer,
The adhesion improving layer may contain an ultraviolet absorber.

A mobile body decorative material according to an embodiment of the present disclosure is an exterior material arranged facing a sensor using an electromagnetic wave having a longer wavelength than visible light, and is arranged facing the sensor. a surface and a second surface opposite the first surface;
A thickness between the first surface and the second surface in at least a portion may be an integer multiple of a half wavelength of the electromagnetic wave.

According to an embodiment of the present disclosure, it is possible to give a new aesthetic appearance to a mobile object.

FIG. 1 is a perspective view of a mobile body to which the mobile body decorative material according to the first embodiment is applied. FIG. 2 is a diagram showing a cross section of the decorative material for a moving body in FIG. 3 is a view showing a cross section of a cover member of the decorative material for a moving body of FIG. 2. FIG. FIG. 4 is a diagram showing a cross section of a decorative sheet of the decorative material for a moving body shown in FIG. 5 is a plan view of the design layer of the decorative sheet shown in FIG. 4. FIG. FIG. 6 is a diagram showing a cross section of the design layer shown in FIG. 5 along line AA. 7A is a plan view showing another arrangement example of the unit elements of the design layer shown in FIG. 5. FIG. 7B is a plan view showing still another arrangement example of the unit elements of the design layer shown in FIG. 5. FIG. 8 is a plan view showing an example of a metal layer of the decorative sheet shown in FIG. 2. FIG. FIG. 9 is a diagram showing a cross section of a transfer film for producing a cover member. FIG. 10 is a cross-sectional view showing a modification of the decorative sheet. FIG. 11 is a plan view of the design layer of the decorative material for a mobile body according to the second embodiment. 12 is an enlarged view of a unit element of the design layer shown in FIG. 11. FIG. 13 is a view showing a cross section of the unit element shown in FIG. 12 along line BB. 14 is a view showing a cross section of the unit element shown in FIG. 12 along line CC. FIG. 15 is a diagram corresponding to FIG. 12 and showing a modified example of the design layer. FIG. 16 is a diagram corresponding to FIG. 12 and showing another modification of the design layer. FIG. 17 is a diagram corresponding to FIG. 12 and showing still another modified example of the design layer. FIG. 18 is a diagram corresponding to FIG. 12 and showing still another modified example of the design layer. FIG. 19 is a diagram corresponding to FIG. 12 and showing still another modified example of the design layer. FIG. 20 is a diagram corresponding to FIG. 12 and showing still another modified example of the design layer. FIG. 21 is a diagram showing a cross section of the decorative material for a moving object according to the third embodiment. 22A and 22B are diagrams for explaining an example of a method of manufacturing a cover member of the decorative material for a moving body shown in FIG. 21. FIG. 23A and 23B are diagrams for explaining another example of the method of manufacturing the cover member of the decorative material for a moving body shown in FIG. 21. FIG. 24A and 24B are diagrams for explaining still another example of the method of manufacturing the cover member of the decorative material for a moving body shown in FIG. 21. FIG. FIG. 25 is a diagram for explaining a method of manufacturing the cover member shown in FIG. 24. FIG. 26 is a cross-sectional view showing a modification of the cover member of the decorative material for a moving body shown in FIG. 21. FIG. FIG. 27 is a diagram for explaining the effect of the decorative member on electromagnetic waves.

An embodiment of the present disclosure will be described below with reference to the drawings. In addition, in the drawings attached to this specification, for the convenience of illustration and ease of understanding, the scale and the ratio of vertical and horizontal dimensions are appropriately changed and exaggerated from those of the real thing.

As used herein, terms specifying shapes and geometric conditions as well as degrees thereof, such as "parallel", "perpendicular", "identical", length and angle values, etc., are strictly It shall be interpreted to include the extent to which similar functions can be expected without being bound.

As used herein, terms such as "sheet", "film" and "plate" are not to be distinguished from each other based solely on their designation. For example, a "decorative sheet" cannot be distinguished from a member called a decorative film or a decorative plate only by the difference in name.

In order to clarify the directional relationships between the figures, some of the figures show common directions by commonly labeled arrows. The tip side of the arrow is one side in each direction. Also, an arrow directed toward the front along a direction perpendicular to the paper surface of the drawing is indicated by a dot in a circle, as shown in FIG. 5, for example. An arrow pointing inward in the drawing along a direction perpendicular to the drawing is indicated by a circle with an x in it, as shown in FIG. 2, for example.

<<<first embodiment>>>
1 to 9 are diagrams for explaining the first embodiment. Among them, FIG. 1 is a view 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. Further, FIG. 3 is a cross-sectional view showing the structure of a cover member used for the decorative material for a moving body. Further, FIG. 4 is a cross-sectional view showing the configuration of a decorative sheet used for the decorative material for a moving body. The moving body decorative material displays a design and imparts a design property to a moving body to which the moving body decorative material is applied. The decorative material for a moving body according to the first embodiment described below is devised to give a new aesthetic appearance to the moving body by expressing a three-dimensional effect.

In the examples shown in FIGS. 1 to 9, the mobile body decorative material 10 is applied to the front panel of the mobile body 1 as an exterior material. The mobile object 1 shown in FIG. 1 is an automobile. An embodiment will be described below with reference to specific application examples shown in the drawings.

However, the mobile body 1 to which the mobile body decorative material 10 is applied is not limited to an automobile. The mobile body decorative material 10 can also be applied to other mobile bodies 1 as movable devices. Examples of moving bodies 1 other than automobiles include railway vehicles, trucks, ships, airplanes, helicopters, drones, and robots. In the first place, application of the decorative material 10 for a moving object is not limited to an exterior material. As will be described later, the mobile body decorative material 10 can also be applied as an interior material for a mobile body.

By the way, as shown in FIGS. 1 and 2, the moving body decorative material 10 is arranged to face the sensor 2 using electromagnetic waves having a longer wavelength than visible light. As an example, the sensor 2 monitors the surroundings of the mobile object 1 . A detection result of the sensor 2 is transmitted to the control device 3 of the moving body 1 . The control device 3 issues an alarm or controls 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 moving body 1 . This sensor 2 can transmit and receive electromagnetic waves. The presence or absence of an obstacle and the distance to the obstacle can be detected by the sensor 2 receiving a reflected wave reflected by an obstacle or the like. The sensor 2 may be a millimeter wave radar device. The millimeter wave radar device may use millimeter waves having a wavelength of 1 mm or more and 10 mm or less as electromagnetic waves.

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 decorative material 10 for a mobile object. The second surface 12 becomes the surface of the decorative material 10 for a moving body. The sensor 2 faces the first surface 11 of the mobile body decorative material 10 . The electromagnetic waves used by the sensor 2 pass through the moving body decorative material 10 in a 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 an emission surface and an incident surface for electromagnetic waves. The first surface 11 and the second surface 12 are flat surfaces at least in regions facing the sensor 2 in the third direction D3. By making the surface flat, the sensitivity of the sensor 2 is suppressed from deteriorating due to diffusion of electromagnetic waves.

The thickness T10 (mm) along the third direction D3 of the moving body decorative material 10 between the first surface 11 and the second surface 12 is at least in the area facing the sensor 5 in the third direction D3. is adjusted to satisfy the following relational expression (1), where .lambda.
(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 for a moving body 10 with high transmittance. It should be noted that the wavelength λ (mm) of the electromagnetic wave in the mobile body decorative material 10 means the wavelength of the electromagnetic wave in the medium. Therefore, assuming that the wavelength of the electromagnetic wave in a vacuum is λ _V (mm) and the refractive index of the decorative material for a moving body 10 is n _D , the following relational expression (2) holds.
λ= _λV / _nD (2)
Also, "k" in the formula is a positive integer, that is, a natural number.

FIG. 27 shows a cross section along the third direction D3 of the mobile body decorative material 10 having a thickness T10 (mm). FIG. 27 shows vibration states of the incident wave LI, the first reflected wave LR1, the second reflected wave LR2, and the composite reflected wave LR at a certain moment. The incident wave LI is an electromagnetic wave that is incident on the second surface 12 of the mobile body decorative material 10 . The first reflected wave LR1 is an electromagnetic wave that is fixed-end-reflected by the second surface 12 of the moving body decorative material 10 . The second reflected light LR2 is an electromagnetic wave that is free-end-reflected by the first surface 11 of the mobile body decorative material 10 . The synthesized reflected wave LR is an electromagnetic wave obtained by synthesizing the first reflected wave LR1 and the second reflected wave LR2. In FIG. 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 these coordinates, the waveforms of the lights LI, LR1, LR2, and LR are represented by the following equations (3) to (6), respectively. In the formulas (3) to (6), "λ" is the wavelength (mm) of the electromagnetic wave in the decorative material for a moving object, "λ _V " is the wavelength (mm) of the electromagnetic wave in vacuum, and "n _A ” is the refractive index of air, and “n _D ” is the refractive index of the moving body decorative material. The refractive index n _A of air can be considered to be unity.
_YI =sin((x× _nA / _λV )×2π) Equation (3)
Y _R1 =sin((x× _nA / _λV )×2π) Equation (4)
Y _R2 =-sin(((x× _nA / _λV )+(2×T10× _nD / _λV ))×2π) Equation (5)
Y _R =-2×sin(2×T10× _nD ×π/ _λV )×cos(((x× _nA / _λV )+(T10× _nD / _λV ))×2π) ・・・Formula (6)

The weaker the intensity of the synthetic reflected wave LR, the higher the electromagnetic wave transmittance. The intensity of the composite reflected wave LR from the moving body decorative material 10 is represented by "2×sin(2×T10×n _D ×π/λ _V )" which indicates the amplitude of the waveform of the reflected wave. When the above relational expression (1) is satisfied, the amplitude of the combined reflected wave LR is less than half of the maximum value of "2" and less than "1". That is, when the relational expression (1) is satisfied, the situation is superior from the viewpoint of reducing the intensity of the combined reflected wave LR. As described above, when the relational expression (1) is satisfied, it is possible to effectively suppress the reflection of the electromagnetic wave on the moving body decorative material 10 . As a result, electromagnetic waves can pass through the decorative material for a mobile body 10 with high transmittance.

From the viewpoint of improving the transmittance of the decorative material 10 for an electromagnetic wave, it is preferable that the relational expression (1A) is satisfied instead of the relational expression (1), and it is more preferable that the relational expression (1B) is satisfied. , the relationship (1C) is more preferably satisfied.
(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)

The amplitude of the first reflected wave LR1 and the amplitude of 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 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 incident wave LI, the first reflected wave LR1 and the second reflected wave LR1 The amplitudes of waves LR2 are shown to be the same.

As shown in FIG. 2 , the mobile body decorative material 10 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 moving body decorative material 10 . The cover member 40 is arranged 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 mobile body decorative material 10 .

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

The configurations of the cover member 40 and the decorative sheet 20 will be described in detail below with reference to FIGS. 3 and 4. FIG.

<<Cover member>>
First, the cover member 40 will be described with reference to FIG. 3 is a cross-sectional view of the cover member 40 shown in FIG. 2. FIG. 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 base 46 and an ultraviolet absorbing layer 48 covering one side surface of the cover base 46 . The cover base material 46 forms the first surface 41 of the cover member 40 .

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

<Ultraviolet absorption layer>
The ultraviolet absorption layer 48 is a layer containing an ultraviolet absorber. The ultraviolet absorbing layer 48 is arranged closer to the second surface 12 than the cover base material 46 is. Accordingly, it is possible to suppress discoloration of the cover base material 46 due to ultraviolet rays incident on the second surface 12 . In the illustrated example, the UV absorbing layer 48 is arranged between the cover substrate 46 and the hard coat film 50 . The ultraviolet absorption layer 48 transmits visible light. As a material for forming the ultraviolet absorbing layer 48, a known material can be used. The ultraviolet absorption layer 48 can be formed from, for example, an ultraviolet absorber and a binder resin. As the ultraviolet absorber contained in the ultraviolet absorbing layer 48, a hydroxyphenyltriazine-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber, titanium oxide, or the like can be used. As the binder resin forming the ultraviolet absorbing layer 48, general-purpose thermoplastic resins, thermosetting resins, ionizing radiation curable resins, and the like can be used.

The ultraviolet absorbing layer 48 can be formed by applying or transferring the material for forming the ultraviolet absorbing layer described above onto a layer adjacent to the ultraviolet absorbing layer 48 (the cover base material 48 in the illustrated example). Methods of applying the material for forming the ultraviolet absorbing layer include gravure coating, gravure reverse coating, gravure offset coating, spinner coating, roll coating, reverse roll coating, kiss coating, wheel coating, dip coating, solid coating by silk screen, and wire bird. Known coating methods such as coating, flow coating, comma coating, flow coating, brush coating, and spray coating can be employed. Moreover, the ultraviolet absorption layer 48 may be formed by an extrusion molding method. In this case, the UV absorbing layer 48 may be two-color molded with a layer adjacent to the UV absorbing layer 48 (the cover substrate 46 in the illustrated example).

Note that the ultraviolet absorption layer 48 may be provided on the hard coat film 50 . For example, the ultraviolet absorption layer 48 is 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). may have been Moreover, either the cover base material 46 or the layer constituting the hard coat film 50 described later may contain an ultraviolet absorber. In these cases, the cover substrate 45 and the hard coat film 50 do not have to include the ultraviolet absorbing layer 48 .

Furthermore, the ultraviolet absorbing layer 48 may contain a stabilizer such as an antioxidant or HALS (hindered amine light stabilizer). As a result, the generation of radicals in the cover base material 46 can be suppressed, and the degradation of the cover base material 46 due to the decomposition of the resin contained in the cover base material 46 due to the radicals can be suppressed. can.

Antioxidants contained in the ultraviolet absorbing layer 48 include butylated hydroxytoluene (BHT), low-volatility phenolic antioxidants, dilauryl thiodipropionate (DLTP) which is a peroxide decomposing agent, and distearyl. - Thiodipropionate (DSTP) or the like can be used. As HALS, hindered amine-based radical scavengers, piperidine-based radical scavengers, and the like can be employed.

Either the cover base material 46 or the layer constituting the hard coat film 50 described later may contain the antioxidant and the stabilizer. For example, either the cover base material 46 or the layer constituting the hard coat film 50 described later may contain the ultraviolet absorber and the antioxidant or the stabilizer. In this case, the cover base 45 and the hard coat film 50 may not include the ultraviolet absorbing layer 48 .

<Hard coat film>
The hard coat film 50 includes a hard coat layer 52 , an adhesion improving layer 54 and an adhesive layer 56 . The hard coat layer 52 is a layer forming the second surface 42 of the cover member 40 (therefore, the second surface 12 of the vehicle 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 arranged facing one side of the cover substrate 45 to adhere the hard coat film 50 to the cover substrate 45 . The adhesion improving layer 54 is a so-called primer layer. The adhesion improving layer 54 is arranged between the hard coat layer 52 and the adhesive layer 56 to improve adhesion between the hard coat layer 52 and the adhesive layer 56 . The hard coat layer 52, the adhesion improving layer 54, and the adhesive layer 56 each transmit visible light.

A hardened resin can be used as the material forming the hard coat layer 52 . The resin cured product is not particularly limited, and a general cured resin contained in the hard coat layer 52 can be used. Examples of such cured resins include polyester resins, epoxy resins, polyurethane resins, aminoalkyd resins, melamine resins, guanamine resins, urea resins, acrylic resins, polyurethane acrylate resins, acrylic acrylate resins, acrylic acrylates and polydimethylsiloxanes. A cured product such as a mixture of The resin cured product may be a cured product obtained by heating and curing a thermoplastic resin, or may be a cured product obtained by curing an ionizing radiation-curable resin by light irradiation.

The hard coat layer 52 may contain a thermoplastic resin in order to impart flexibility and other physical properties. Moreover, the hard coat layer may contain various additives within a range that does not impair its performance. Examples of various additives include scratch-resistant particles, ultraviolet absorbers, light stabilizers, photopolymerization initiators, polymerization inhibitors, cross-linking agents, antistatic agents, adhesion improvers, antioxidants, leveling agents, thixotropic Examples include imparting agents, coupling agents, plasticizers, antifoaming agents, fillers and solvents.

The hard coat layer 52 is formed by coating or printing the above-described material for forming the hard coat layer on a transfer base material 62 described later or a release layer 64 formed on the transfer base material 62, and curing the material. It can be formed by The method of applying the material for forming the hard coat layer is not particularly limited, and includes a dipping method, a flow coating method, a spray method, a spin coating method, a gravure coating method, a micro gravure coating method, a die coating method, a slit reverse method, A known coating method such as a roll coating method, a blade coating method, an air knife coating method, an offset method, a barcode method, or the like can be employed. As a method for printing the material for forming the hard coat layer, known printing methods such as gravure printing, gravure offset printing, and screen printing can be employed.

The thickness of the hard coat layer 52 is not particularly limited, and can be appropriately set so that the hard coat layer 52 can exhibit its function. 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.

Examples of materials that can be used to form the adhesion improving layer 54 include acrylic resins, urethane resins, vinyl chloride-vinyl acetate copolymer resins, polyester resins, and chlorinated polyolefin resins, but are limited to these. can't Further, the adhesion improving layer 54 may contain an additive such as an ultraviolet absorber.

The adhesion improving layer 54 is formed by applying the material for forming the adhesion improving layer described above onto the hard coat layer 52 and curing it as necessary. The method of applying the material for forming the adhesion improving layer is not particularly limited, and the known coating method described above can be employed.

Although the thickness of the adhesion improving layer 54 is not particularly limited, it is, for example, 0.1 μm or more and 10 μm or less, preferably 0.2 μm or more and 5 μm or less.

Examples of the material forming the adhesive layer 56 include heat-sealing resins such as acrylic resin, vinyl chloride-vinyl acetate copolymer, polyamide resin, polyester resin, chlorinated polypropylene, chlorinated rubber, urethane resin, epoxy resin, and styrene resin. etc. can be adopted. These resins may be used alone or in combination of two or more depending on the materials of the cover base material 46 and the ultraviolet absorbing layer 48 . From the viewpoint of excellent transparency and improved transparency and weather resistance, it is particularly preferable to use an acrylic resin alone as the heat-sealing resin.

The adhesive layer 56 is formed by coating the adhesion improving layer 54 with the adhesive layer forming material described above. The method of applying the adhesive layer-forming material is not particularly limited, and the above-described known coating methods can be employed.

Although the thickness of the adhesive layer 56 is not particularly limited, it is, for example, 1 μm or more and 100 μm or less, preferably 3 μm or more and 50 μm or less. Note that the hard coat film 50 may not include the adhesive layer 56 when the adhesion improving layer 54 has an adhesive function.

<<Decoration sheet>>
Next, the decorative sheet 20 will be described with reference to FIG. FIG. 4 is a cross-sectional view showing the configuration of the decorative sheet 20. As shown in FIG. The decorative sheet 20 displays a design and imparts design to the decorative material 10 for a mobile object. In the example shown in FIG. 4, the decorative sheet 20 includes a sheet base material 24, a design layer 26 and a metal layer 28 provided on the sheet base material 24, and an embedding layer that fills the unevenness of the design layer 26 and the metal layer 28. It has a layer 30 and a diffusion layer 32 provided on the buried 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 moving body decorative material 10). The diffusion layer 32 forms the second surface 22 of the decorative sheet 20 .

<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 embedded layer 30 and the diffusion layer 32) of the decorative sheet 20. FIG. The sheet base material 24 is a film-like member. As a material for forming the sheet base material 24, any material can be used as long as it transmits visible light and has appropriate supportability. Polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polystyrene, cyclic polyolefin and the like can be used. In the case of molding the moving body decorative material 10 so as to conform to a three-dimensional curved surface, the material forming the sheet base material 24 is preferably acrylic acid ester, ABS, or polyvinyl chloride. This is because acrylic acid esters, ABS, and polyvinyl chloride can be stretched by applying heat, so that TOM (three dimension overlay method) molding and pressure molding are possible.

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 5 μm or more, for example. When molding the moving body decorative material 10 so as to conform to a three-dimensional curved surface, the thickness of the sheet base material 24 is preferably 500 μm or less.

<Design layer>
The design layer 26 forms the design displayed by the decorative sheet 20 . The design layer 26 is positioned 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. As shown in FIG. 6 shows a cross section of the design layer 26 shown in FIG. 5 along line AA. 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 the design layer 26, the range reflected in the unit element 34 is wider than that of the specular reflection surface. Therefore, the observer feels that the unit element 34 functioning as a convex mirror is positioned deeper than the actual position of the design layer 26 . That is, the design layer 26 can display a design with a deeper sense of depth than the thickness of the design layer 26 . Therefore, while the thickness of the design layer 26 is reduced, a three-dimensional effect greater than the thickness of the design layer 26 can be expressed. As a result, it is possible to realize a rich design expression with a sense of quality.

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 waves emitted from the sensor 2 can pass through the decorative material for a moving body 10 with high transmittance. As shown in FIG. 6, the Fresnel lens portion 35 is formed with irregularities 36 forming a Fresnel lens structure. The height T36 and the interval P36 of the irregularities 36 are preferably 200 μm or less so that the electromagnetic waves emitted from the sensor 2 can pass through the decorative material for a moving body 10 with high transmittance. Moreover, it is preferable that the height T36 of the unevenness 36 forming the Fresnel lens structure is constant within the plane of the design layer 26 . As a result, the metal layer 28, which will be described later, can be uniformly formed within the plane of the design layer 26. As shown in FIG.

In addition, in the example shown in FIG.5 and FIG.6, although the Fresnel lens structure is comprised as a circular Fresnel lens structure, it is not restricted to this. The Fresnel lens structure may be configured as a linear Fresnel lens structure.

In the illustrated example, the mobile body decorative material 10 is used as an exterior material. Here, when observing the exterior of the moving body 1 in an exhibition hall or the like, an observer normally observes it at a distance of about 1 m to 5 m from the exterior. Correspondingly, when the mobile body decorative material 10 is used as an exterior material, the focal length of the convex mirror of each unit element 34 is set to The positive direction 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. Thereby, the design layer 26 can effectively present a sense of depth to the observer.

On the other hand, when observing the interior of the mobile body 1 from the inside of the mobile body 1, the observer normally observes the interior from a distance of about 0.3 m to 1 m. Correspondingly, when the moving body decorative material 10 is used as an interior material, the focal length of the convex mirror of each unit element 34 is set to The direction 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. Thereby, the design layer 26 can effectively express a sense of depth to the observer.

Note that the planar shape of the unit element 34 is not limited to the rectangular shape shown in FIG. The planar shape of the unit element 34 includes other polygonal shapes such as triangle, pentagon, hexagon, and octagon, polygonal shapes with chamfered corners, and curved contours such as circular and elliptical shapes. It is possible to adopt a shape including

Also, the method of arranging the plurality of unit elements 34 within the plane of the design layer 26 is not limited to the example shown in FIG. For example, when each unit element 34 has a rectangular shape, a plurality of unit elements 34 may be arranged as shown in FIG. 7A. Also, when each unit element 34 is hexagonal, a plurality of unit elements 34 may be arranged as shown in FIG. 7B.

In addition, the dimension of the unit element 34 in plan view of the design layer 26 (the diameter of the circumscribed circle of the unit element 34 in plan view of the design layer 26) is not particularly limited, and is appropriately set according to the design expressed by the design layer 26. It is possible. 5, 7A, and 7B, when the plurality of unit elements 34 are arranged without gaps in a plan view of the design layer 26, the dimensions of the unit elements 34 should be 3 mm or more and 200 mm or less. is preferred. 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. Therefore, even if a plurality of unit elements 34 are combined, it is not possible to effectively display the design by combining the plurality of unit elements 34 . Further, when the dimension of the unit element 34 is larger than 200 mm, the dimension of the unit element 34 is too large with respect to the dimension of the design layer 26 in a plan view, and the degree of freedom of arrangement of the unit element 34 within the design layer 26 is reduced. there is a risk of Therefore, it may be difficult to display a desired design by arranging the plurality of unit elements 34 as desired. 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 3 mm or more and 200 mm or less. is preferably

When the mobile body decorative material 10 is used as an exterior material, the dimensions of the unit element 34 are 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 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.

As a 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 used. The ionizing radiation curable resin is, for example, an electron beam curable resin. In particular, ultraviolet curable resins and electron beam curable resins have stretchability. Therefore, the design layer 26 made of an ultraviolet curable resin or an electron beam curable resin can be easily shaped to form the unevenness 36 of the Fresnel lens structure. If it is made of resin or electron beam curable resin, it is possible to suppress the possibility that the unevenness 36 of the design layer 26 is crushed when the cover member 40 is attached to the decorative sheet 20 . Further, the design layer 26 made of an ultraviolet curable resin or an electron beam curable resin hinders the molding of the moving body decorative material 10 when the moving body decorative material 10 is molded so as to be applied to a three-dimensional curved surface. less fear.

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

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 substrate 24 . Next, ultraviolet rays or electron beams are applied 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 .

On the other hand, when the design layer 26 is formed integrally with the sheet base material 24, the sheet material 24 and the design layer 26 can be formed, for example, by hot embossing or injection molding. In the hot embossing, a mold corresponding to the shape of the design layer 26 is pressed against one side of the heated and softened base material to form the design layer 26 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 in a mold corresponding to the shapes of the sheet base material 24 and the design layer 26 and cooled to form the sheet base material 24 and the design layer 26. A member integrated with the design layer 26 is formed.

<Metal layer>
The metal layer 28 is a layer for improving reflectance on the surface of the design layer 26 on which the unevenness 36 of the Fresnel lens structure is formed. The metal layer 28 is made of aluminum (Al), zinc oxide (ZnO), titanium oxide (TiO ₂ ), indium (In), magnesium (Mg), tin (Sn), titanium (Ti), lead (Pb), zirconium ( Zr), yttrium (Y), etc. as raw materials, physical vapor deposition (PVD) methods such as vacuum deposition, sputtering, ion plating, plasma chemical vapor deposition, thermal chemical vapor deposition, photochemical vapor deposition, etc. can be formed by a chemical vapor deposition (CVD) method or the like.

In the illustrated example, the moving body decorative material 10 is arranged facing the sensor 2 , so the metal layer 28 is preferably made of a material that allows the electromagnetic waves emitted from the sensor 2 to pass therethrough. 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 capable of transmitting electromagnetic waves may be provided between the plurality of metal grain portions. . In other words, the metal layer 28 may have a so-called sea-island structure. Note that FIG. 8 is an electron micrograph of the metal layer 28 having the sea-island structure. Further, as will be described later, when the decorative sheet 20 includes a layer such as a pattern layer or a colored layer that can be observed through the metal layer 28, the metal layer 28 may be made of a material that can transmit visible light. preferable.

In addition, in the illustrated example, the metal layer 28 is formed along the surface of the design layer 26 on which the unevenness 36 is formed, but it is not limited to this. The metal layer 28 may be formed so as to fill the unevenness 36 of the design layer 26 .

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

<Embedded layer>
The embedded layer 30 is a layer for filling unevenness of the design layer 26 and the metal layer 28 . Since the unevenness of the design layer 26 and the metal layer 28 is filled with the embedding layer 30, the possibility that the unevenness 36 of the design layer 26 is crushed when the cover member 40 is attached to the decorative sheet 20 is suppressed. be. The material for forming the embedding layer 30 is not particularly limited as long as it can transmit visible light. The embedding layer 30 can also be formed using an adhesive that adheres the metal layer 28 and the diffusion layer 32 together. When the metal layer 28 is formed so as to fill the irregularities 36 of the design layer 26 , the decorative sheet 20 may not include the embedding layer 30 .

<Diffusion layer>
The diffusion layer 32 is a layer that diffuses visible light reflected by the metal layer 28 . The diffusion layer 32 is arranged to overlap the unit elements 34 of the design layer 26 in plan view of the decorative sheet 20 . By diffusing the light reflected by the metal layer 28 by the diffusion layer 32 , the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the mobile body decorative material 10 can be widened. Further, the light is diffused by the diffusion layer 32 , so that uniform light is emitted from the second surface 12 of the decorative material 10 for a moving body. Therefore, even if the moving body decorative material 10 is irradiated with strong light, the possibility that the strong light is directly reflected by the metal layer 28 and emitted from the second surface 12 is suppressed.

The diffusion layer 32 contains a binder resin and a light diffusion material dispersed in the binder resin. The diffusion layer 32 can isotropically diffuse light by using the refractive index difference between the binder resin and the light diffusion material or by utilizing the reflectivity of the light diffusion material.

Examples of the binder resin contained in the diffusion layer 32 include chlorine resin, urethane resin, acrylic urethane resin, acrylic resin, polyester resin, polyamide resin, butyral resin, polystyrene resin, nitrocellulose resin (nitrocellulose), and cellulose acetate. A known material such as resin can be used.

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

The diffusion layer 32 can be formed by coating the embedded layer 30 with a liquid binder resin in which a light diffusion material is dispersed. The diffusion layer 32 can also be formed by extruding a binder resin in which a light diffusion material is dispersed. The extruded diffusion layer 32 and embedding layer 30 can be bonded together via an adhesive or pressure-sensitive adhesive, or by heat-sealing the diffusion layer 32 and embedding layer 30 together.

<Other layers>
The decorative sheet 20 may include a pattern layer in addition to the layers 24, 26, 28, 30 and 32 described above. The picture layer is a layer for displaying pictures such as letters (product names, product indications, quality indications, etc.), graphics, photographs, symbols, designs, and patterns. For the pattern layer, a pattern is printed on other layers of the decorative sheet (for example, the diffusion layer 32 and the sheet base material 24) using an ink prepared by mixing a coloring agent such as a dye or pigment with a binder resin or solvent. It is formed by 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 employed. Note that the pattern layer may be included in the cover member 40 .

Moreover, the decorative sheet 20 may include a colored layer. By including the colored layer in the decorative sheet 20, the decorative material 10 for a mobile body can be given a desired color. The colored layer is formed by applying ink similar to the ink for forming the pattern layer to another layer (for example, the sheet base material 24) of the decorative sheet 20. As shown in FIG. As a method of applying the ink for forming the colored layer, the above-described known printing method can be employed. Note that the sheet base material 24, the design layer 26, the embedded layer 30, and the diffusion layer 32 may contain a coloring agent instead of the decorative sheet 20 containing a colored layer. Alternatively, any layer of the cover member 40 (for example, the cover substrate 46) may contain a colorant.

<<Method for producing decorative material for moving object>>
The moving body 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.

First, as shown in FIG. 9, a transfer film 60 for producing a cover member is produced. Specifically, a release layer 64 , a hard coat layer 52 , an adhesion improving layer 54 and an adhesive layer 56 are laminated in this order on a flat transfer substrate 62 . The transfer substrate 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 substrate 45 . As the transfer base material 62, for example, a polyester resin film, a polyolefin resin film, or the like, which is used as a peeling layer of a general transfer film, can be adopted. The release layer 64 is formed using silicone resin or the like. By disposing the release layer 64 between the transfer substrate 62 and the hard coat film 50 , the transfer substrate 62 can be easily separated from the hard coat film 50 . Instead of forming the release layer 64 on the transfer base material 62, the surface of the transfer base material 62 may be subjected to a known release treatment. Also in this case, the transfer base material 62 can be easily peeled off from the hard coat film 50 .

Also, a cover base 45 is prepared. The cover base 45 is produced by forming an ultraviolet absorbing layer 48 on one side surface of the cover base 46 .

Next, the hard coat film 50 is transferred from the transfer film 60 for producing 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 base 45 . Thereafter, the transfer base material 62 and release layer 64 of the transfer film 60 are peeled off from the hard coat film 50 . When the cover base 45 does not include the ultraviolet absorbing layer 48, after the adhesive layer 56 of the transfer film 60 is adhered to one side surface of the cover base 46, the transfer base 62 of the transfer film 60 and the release layer are attached. 64 is peeled off from the hard coat film 50 .

Next, an example of a method for manufacturing the decorative sheet 20 will be described. First, the sheet base material 24 is prepared. As shown in FIG. 4, a design layer 26 is formed on one side surface of the sheet base material 24 . After that, a metal layer 28 is formed on the surface of the design layer 26 on which the unevenness 36 is formed. After that, a buried 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 . After that, a diffusion layer 32 is formed on one side surface of the buried layer 30 .

Next, the obtained first surface 41 of the cover member 40 and the second surface 22 of the decorative sheet 20 are adhered. In the illustrated example, the cover base material 46 of the cover member 40 is adhered to the diffusion layer 32 of the decorative sheet 20 . As a result, the mobile body decorative material 10 is completed.

<<<Modified example of the first embodiment>>>
In the example described above, the design layer 26 includes unit elements 34 that function as convex mirrors, but is not limited to this. The design layer 26 may include unit elements 34 that function as concave mirrors. According to such a design layer 26, the position of the reflection surface of the external light reflected on the unit elements 34 is different from the actual position of the design layer 26. I feel like Therefore, while reducing the thickness of the design layer 26, it is possible to express a three-dimensional effect equal to or greater than the thickness of the design layer. As a result, it is possible to realize a rich design expression with a sense of quality.

When the design layer 26 includes unit elements 34 functioning as concave mirrors, and when the decorative material for a vehicle 10 is used as an exterior material, the focal length of the concave mirrors of the unit elements 34 is the second distance of the decorative sheet 20 . With the direction from the surface 22 toward the first surface 21 as the positive direction, it is preferably -350 mm or more and -0.5 mm or less, more preferably -250 mm or more and -2 mm or less, and -150 mm or more and -5 mm or less. is most preferred. Thereby, the design layer 26 can effectively present 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 .

On the other hand, when the design layer 26 includes unit elements 34 functioning as concave mirrors, and when the vehicle decorative material 10 is used as an interior material, the focal length of the concave mirrors of the unit elements 34 is -350 mm or more-. It is preferably 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 present a three-dimensional effect to the observer. Also in this case, the dimensions of the unit elements 34 are not particularly limited, and can be appropriately set according to the design expressed by the design layer 26 .

In the above example, the surface of the design layer 26 on which the Fresnel lens structure is formed (the surface on which the unevenness 36 is formed) faces the second surface 22 of the decorative sheet 20, but this is not the only option. can't As shown in FIG. 9 , the surface of the design layer 26 on which the Fresnel lens structure is formed may face the first surface 21 of the decorative sheet 20 . In this case, as shown in FIG. 9, the diffusion layer 32 is arranged on one side surface of the sheet base material 24, and the design layer 26, the metal layer 28 and the embedding layer 30 are arranged on the other side surface of the sheet base material 24 in this order. may be formed with In this case, the embedding layer 30 forms the first surface 21 of the decorative sheet 20 .

<<<second embodiment>>>
Next, a second embodiment of the present disclosure will be described with reference to FIGS. 11 to 20. FIG. 11 to 20 differ from the decorative material for a moving body 10 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 moving body decorative material 10 shown in FIGS. In the second embodiment shown in FIGS. 11 to 18, the same reference numerals are assigned to the same parts as those of the moving body decorative material 10 shown in FIGS. 1 to 9, and detailed description thereof will be omitted.

<Design layer>
The design layer 126 of the second embodiment will be described below with reference to FIGS. 11 to 20. FIG. FIG. 11 is a plan view of the design layer 126 of the decorative material for a mobile body according to the second embodiment. 12 is an enlarged view of the unit element 134 of the design layer 126 shown in FIG. 11. As shown in FIG. 13 and 14 are cross-sectional views of the design layer shown in FIG. 12 taken along line BB and line CC, respectively. 15 to 20 are diagrams corresponding to FIG. 12 and diagrams showing modifications of the design layer 126 shown in FIG.

As can be understood from FIGS. 11 to 14, the design layer 126 includes unit elements 134 in which unevennesses 136 forming groups of parallel straight lines are formed in plan view. Such a design layer 126 can reflect light according to the direction in which the group of parallel straight lines extends, and can express a design according to the direction in which the group of parallel straight lines extends. In addition, the design layer 126 can express different designs depending on the direction in which the decorative material for a mobile body 10 is observed. In the illustrated example, design layer 126 includes a plurality of unit elements 134 . The unit elements 134 adjacent to each other have different directions in which parallel straight lines extend in plan view. Such a design layer 126 can express a complicated design because the adjacent unit elements 134 reflect light in different manners.

Widths W137 and W138 of the concave portion 137 and the convex portion 138 in the group of parallel straight lines can be appropriately set according to the design that the design layer 126 expresses. Also, the width W137 of the concave portion 137 in the parallel straight line group may be equal to or different from each other within the plane of the unit element 134 . Similarly, the widths W138 of the protrusions 138 in the group of parallel straight lines may be equal or different in the plane of the unit element 134 . However, from the viewpoint of preventing rainbow light from being generated 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. When the moving body decorative material 10 is arranged to face the sensor 2, the width W137 of the concave portion 137 and the convex portion 138 is set so that the electromagnetic wave emitted from the sensor 2 penetrates the moving body decorative material 10 at a high equalization rate. , W138 is preferably 200 μm or less. Furthermore, from the viewpoint of suppressing the unevenness 136 of the parallel straight line group from being visually recognized with the naked eye, the widths W137 and W138 of the concave portion 137 and the convex portion 138 are preferably 80 μm or less.

Further, the height T136 of the irregularities 136 forming the group of parallel straight lines is preferably 200 μm or less so that the electromagnetic waves emitted from the sensor 2 can pass through the decorative material for a moving body 10 with high transmittance. Further, it is preferable that the height of the unevenness 136 forming the group of parallel straight lines is constant within the plane of the design layer 126 . Thereby, the metal layer 28 can be uniformly formed in the plane of the design layer 126 .

The dimension of the unit element 134 in plan view of the design layer 126 (the diameter of the circumscribed circle of the unit element 134 in plan view of the design layer 126) is not particularly limited, and can be appropriately set according to the design expressed by the design layer 126. be. However, when a plurality of unit elements 134 are arranged without gaps in a plan view of the design layer 126 as shown in FIG. 11, the dimensions of the unit elements 134 are 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. Therefore, even if a plurality of unit elements 134 are combined, it is not possible to effectively display the design by combining the plurality of unit elements 134 . Further, when the dimension of the unit element 134 is larger than 200 mm, the dimension of the unit element 134 is too large with respect to the dimension of the design layer 126 in plan view, and the degree of freedom of arrangement of the unit element 134 within the design layer 126 is reduced. there is a risk of Therefore, it may be difficult to display a desired design by arranging the plurality of unit elements 134 as desired. 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 dimensions of the unit elements 134 are 3 mm or more and 200 mm or less. is preferably

When the mobile 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.

In the example shown in FIG. 11, when the design layer 126 is viewed from above, each unit element 134 has a rectangular shape, and the direction in which the group of parallel straight lines extends is along one of the sides of the unit element 134. , but not limited to this. As shown in FIGS. 15 and 16 , in a plan view of the design layer 126 , the direction in which the group of parallel straight lines extends may be the direction that intersects each side of the unit element 134 . Moreover, the planar shape of the unit element 134 is not limited to the rectangular shape shown in FIGS. 11 to 16 . The planar shape of the unit element 134 includes other polygonal shapes such as triangle, pentagon, hexagon, and octagon, polygonal shapes with chamfered corners, and curved contours such as circular and elliptical shapes. It is possible to adopt a shape including

Also, as shown in FIG. 17, the shapes of the plurality of unit elements 134 may be different from each other. Furthermore, as shown in FIGS. 18 and 19, the unit element 134 may be formed with unevenness forming a group of parallel curved lines in plan view. In particular, as shown in FIG. 19, when the unevenness formed on the unit element 134 forms a group of concentric circles in plan view, the design layer 126 can display the same design as the design layer 26 shown in FIG. . Further, as shown in FIG. 20, the design layer 126 includes unit elements 134 formed with unevenness forming a group of parallel straight lines in plan view, and unit elements 134 formed with unevenness forming a group of parallel curved lines in plan view. may contain.

Such a design layer 126 can be produced by a similar method using a material similar to that of the design layer 26 shown in FIG. Also, the design layer 126 may be formed integrally with the sheet base material 24 .

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

FIG. 21 is a cross-sectional view showing the configuration of a moving body decorative material 210 according to the third embodiment. In the example shown in FIG. 21, the decorative sheet 220 does not contain 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 moving body decorative material 210). The hard coat layer 252 having unevenness 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 mobile body decorative material 210 . . Further, the light is diffused by the hard coat layer 252 , so that uniform light is emitted from the second surface 12 of the moving body decorative material 210 . Further, since the unevenness 253 is formed on the surface of the hard coat layer 252, the luster of the moving body decorative material 210 can be suppressed. In other words, the unevenness 253 allows the moving body decorative material 210 to express a matte texture.

The hard coat layer 252 having the irregularities 253 formed thereon can be produced by adding aggregating filler to the hard coat layer forming material described above.

Alternatively, as shown in FIG. 22, a hard coat layer 252 having unevenness 253 can be formed by forming unevenness 265 on the other side surface of a release layer 264 of a transfer film 260 for fabricating a cover member. Specifically, the above-described release layer forming material is applied onto the transfer base material 62, and the unevenness 265 is formed on the surface of the coated release layer forming material by a known method such as embossing. Form. Next, a hard coat layer 252 is formed on the surface of the mold release layer 264 formed in this way, on which the irregularities 265 are formed. After that, an adhesion improving layer 54 is formed on the hard coat layer 252 , and an adhesive layer 56 is formed on the adhesion improving layer 54 . By transferring the hard coat film 250 from the transfer film 260 thus obtained to the cover substrate 45, the cover member 240 having the unevenness 253 formed on the surface of the hard coat layer 252 can be obtained. The release layer 264 having the unevenness 265 can also be produced by adding aggregated filler to the release layer forming material described above.

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

Alternatively, as shown in FIG. 24, unevenness 463 is formed on the surface opposite to the surface facing hard coat layer 252 of transfer base material 462 of transfer film 460 for producing a cover member. A hard coat layer 252 having Specifically, a transfer base material 462 having unevenness 463 is prepared, and the release layer 64 and the 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. Then, the transfer film 460 is produced. After that, the transfer base material 462 is wound 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 as shown in FIG. As a result, irregularities 253 are formed in the hard coat layer 252 . Instead of forming the irregularities 463 on the surface of the transfer base material 462, a shaping layer having irregularities formed on the surface of the transfer base material 462 may be provided. The shaping layer can be produced using, for example, an antiblocking agent containing agglomerated filler.

<<<modification of the third embodiment>>>
Next, a modification of the third embodiment of the present disclosure will be described with reference to FIG. A cover member 540 shown in FIG. 26 differs from the cover member 240 shown in FIG. 21 in that the hard coat layer 52 does not have 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. In the modification shown in FIG. 26, portions similar to those of the cover member 240 shown in FIG. 21 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 26 is a diagram showing a cross section of a cover member 540 according to a modification of the third embodiment. In the cover member 540 shown in FIG. 26, the unevenness 253 is not formed on the hard coat layer 52, but the unevenness 547 is formed on the surface of the cover substrate 546 on the hard coat film 50 side. 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 diffuses the light reflected by the metal layer 28 of the decorative sheet 220, so that the design layer 26 can be visually recognized from the second surface 12 of the moving body decorative material 210. can be expanded. In addition, the light is diffused by the cover base material 546 , so that uniform light is emitted from the second surface 12 of the moving body decorative material 210 .

As a method for forming the unevenness 547 on the cover base material 546, a known method such as a sandblasting method can be employed. In addition, as shown in FIG. 26, in the case where the unevenness 547 is formed on the cover base material 546, the surface of the cover base material 546 on which the unevenness 547 is formed is not provided with an ultraviolet absorbing layer, but the other layer of the cover member 540 is formed. Preferably, 52, 54, 56 contain an ultraviolet absorber.

<<<Other Modifications>>>
In the above example, when the design layer 26 includes the unit elements 34 that function as convex mirrors or concave mirrors, and the design layer 126 includes the unit elements 134 formed with irregularities 136 forming parallel straight lines or parallel curved lines in plan view. Although the case of including is described, it is not limited to this. For example, the design layers 26 and 126 may include unit elements with unevenness forming an embossed hologram. In this case, the moving body decorative material 10, 210 can express a design corresponding to the design expressed by the embossed hologram of the design layer 26, 126. FIG.

Moreover, in the above-described examples, examples in which the decorative sheets 20 and 220 include the metal layer 28 have been described, but the present invention is not limited to this. The decorative sheets 20 , 220 may include a refractive index modulation layer covering the irregularities 36 , 136 of the design layers 26 , 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, 136 of the design layer 26, 126 is covered with the refractive index modulation layer, a reflective interface is formed between the design layer 26, 126 and the refractive index modulation layer, and the surface of the design layer 26, 126 Light reflectance can be improved.

As described above, the moving body decorative material 10 of the above-described embodiment includes the decorative sheet 20 having the first surface 21 and the second surface 22 facing the first surface 21, and the second surface of the decorative sheet 20. and a cover member 40 arranged facing the 22 . The decorative sheet 20 includes a design layer 26 positioned between the first surface 21 and the second surface 22 or forming at least one of the first surface 21 and the second surface 22 . The design layer 26 includes unit elements 34 that function as convex mirrors or concave mirrors.

According to the mobile body decorative material 10, a three-dimensional effect greater than the thickness of the design layer 26 can be expressed, and a rich design expression with a sense of quality can be realized.

Further, 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. In this case, the thickness of the design layer 26 can be reduced, and the thickness of the decorative material for a mobile object 10 can be reduced.

Further, the mobile body 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 present a three-dimensional effect to the observer.

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 present a three-dimensional effect to the observer.

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 present a three-dimensional effect to the observer.

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 present a three-dimensional effect to the observer.

Alternatively, the moving 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 the second surface 22 of the decorative sheet 20 facing the second surface 22. and a cover member 40 arranged to The decorative sheet 20 includes a design layer 126 located between the first surface 21 and the second surface 22 or forming at least one of the first surface 21 and the second surface 22 . The design layer 126 includes unit elements 134 on which unevennesses 136 forming a group of parallel straight lines or a group of parallel curved lines in plan view are formed.

According to the moving body decorative material 10, the design layer 126 can reflect light according to the direction in which the group of parallel straight lines or the group of parallel curves extends. It is possible to express the design according to. In addition, the design layer 126 can express different designs depending on the direction in which the decorative material for a mobile body 10 is observed.

In addition, in the mobile body decorative material 10 of the above-described embodiment, the design layer 126 includes a plurality of unit elements 134 . Unit elements 134 adjacent to each other have different directions in which parallel straight lines or parallel curved lines extend in plan view. In this case, the design layer 126 can express a complicated design because the adjacent unit elements 134 reflect light in different manners.

Alternatively, the moving body decorative material 10, 210 of the above-described embodiment includes the decorative sheet 20, 220 having the first surface 21 and the second surface 22 facing the first surface 21, and the decorative sheet 20, 220. and cover members 40 , 240 , 540 arranged to face the second surface 22 . The decorative sheets 20 , 220 include design layers 26 , 126 positioned between the first surface 21 and the second surface 22 or forming at least one of the first surface 21 and the second surface 22 . The design layers 26 and 126 include unit elements 34 having unevenness forming an embossed hologram.

According to such a moving body decorative material 10, 210, the design layers 26, 126 can express a design corresponding to the design expressed by the embossed hologram.

In addition, the moving body decorative materials 10 and 210 of the above-described embodiments are exterior materials, and the dimensions of the unit elements 34 and 134 are 3 mm or more and 200 mm or less, preferably 10 mm or more and 200 mm or less, and more preferably It is 20 mm or more and 100 mm or less. In this case, it is possible to effectively display the design by combining the plurality of unit elements 34 and 134 . Moreover, it is easy to display a desired design by arranging the plurality of unit elements 34 and 134 as desired.

Alternatively, the moving body decorative materials 10 and 210 of the above-described embodiments are interior materials, and 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 It is 6 mm or more and 20 mm or less. In this case, it is possible to effectively display the design by combining the plurality of unit elements 34 and 134 . Moreover, it is easy to display a desired design by arranging the plurality of unit elements 34 and 134 as desired.

Further, 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 metal layer 28 covering the Fresnel lens portion 35 . In this case, the light reflectance of the surface of the design layer 26 on which the unevenness 36 of the Fresnel lens structure is formed can be improved.

In addition, in the mobile body decorative material 210 of the above-described embodiment, the decorative sheet 20 further includes a metal layer 28 that covers the unevenness 136 . In this case, it is possible to improve the reflectance of light on the surface of the design layer 26 on which the unevenness 136 forming the group of parallel straight lines or the group of parallel curves is formed.

In addition, in the mobile body decorative materials 10 and 210 of the above-described embodiments, the metal layer 28 can transmit electromagnetic waves having a longer wavelength than visible light. In this case, when the moving body decorative material 10, 210 is placed facing the sensor 2 that emits electromagnetic waves, the electromagnetic waves can pass through the moving body decorative material 10, 210 with high transmittance.

In addition, in the mobile body decorative material 10, 210 of the above-described embodiments, the metal layer 28 includes a plurality of metal grain portions 28a capable of reflecting visible light, and the electromagnetic wave can be transmitted between the plurality of metal grain portions 28a. A gap 28b is provided. In this case, when the moving body decorative material 10, 210 is placed facing the sensor 2 that emits electromagnetic waves, the electromagnetic waves can pass through the moving body decorative material 10, 210 with high transmittance.

Alternatively, in the mobile body cosmetic material 10 of the embodiment described above, 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 covering the Fresnel lens structure. The refractive index of the design layer 26 and the refractive index of the refractive index modulation layer are different. 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 need to include the metal layer 28 .

Alternatively, in the moving 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 and the refractive index of the refractive index modulation layer are different. 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 need to include the metal layer 28 .

Further, in the mobile body decorative material 10 of the above-described embodiment, the decorative sheet 20 is positioned between the design layers 26, 126 and the second surface 22, or the diffusion layer 32 forming the second surface 22. including. 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 decorative material for a mobile body 10 can be widened. Further, the light is diffused by the diffusion layer 32 , so that uniform light is emitted from the second surface 12 of the decorative material 10 for a moving body. Therefore, even if the moving 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.

Alternatively, in the mobile body decorative material 10, 210 of the above-described embodiments, the cover member 40, 240, 540 includes the cover base material 46, 546 and the hard coat layer 52 arranged to face the cover base material 46, 546. , 252. In this case, it is easy to change the texture of the moving body decorative material 10, 210 as desired. For example, depending on the presence or absence of the unevenness 253 on the surface of the hard coat layer 252, the moving body decorative material 10, 210 can express a matte texture or a glossy texture.

Alternatively, in the mobile body decorative material 210 of the above-described embodiment, the cover member 240 includes the cover base material 46 and a hard coat layer 252 arranged to face the cover base material, and the surface of the hard coat layer 252 is Asperities 253 are formed. In this case, hard coat layer 252 has the same function as diffusion layer 32 . That is, such a hard coat layer 252 can diffuse the light that passes through the hard coat layer 252 and widen the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the mobile body decorative material 210 . . Further, the light is diffused by the hard coat layer 252 , so that uniform light is emitted from the second surface 12 of the moving body decorative material 210 . Furthermore, since the unevenness 253 is formed on the surface of the hard coat layer 252, the luster of the moving body decorative material 210 can be suppressed. In other words, the unevenness 253 allows the moving body decorative material 210 to express a matte texture.

Alternatively, in the mobile body decorative material 210 of the above-described embodiment, the cover member 540 includes the cover base material 546 and the hard coat layer 52 arranged to face the cover base material 546 . Concavities and convexities 547 are formed on the surface facing the coat layer 52 . In this case, the cover base material 546 has a function similar to that of the diffusion layer 32 . That is, such a cover base material 546 can diffuse the light transmitted through the cover base material 546 and widen the viewing angle at which the design layer 26 can be visually recognized from the second surface 12 of the mobile body decorative material 210 . . In addition, the light is diffused by the cover base material 546 , so that uniform light is emitted from the second surface 12 of the moving body decorative material 210 .

In addition, in the mobile body decorative material 10, 210 of the above-described embodiment, the cover member 40, 240 includes the cover base material 46, the hard coat layers 52, 252 arranged to face the cover base material 46, and the cover material. and a UV absorbing layer 48 disposed between the substrate 46 and the hardcoat layer 52 , 252 . In this case, it is possible to suppress the risk of discoloration of the cover base material 46 due to ultraviolet rays.

Alternatively, in the mobile body decorative material 10, 210 of the above-described embodiments, the cover member 40, 240, 540 includes the cover base material 46, 546 and the hard coat layer 52 arranged to face the cover base material 46, 546. , 252. The cover base material 46 and/or the hard coat layers 52, 252 contain an ultraviolet absorber. In this case, it is possible to suppress the risk of discoloration of the cover base material 46, 546 due to ultraviolet rays.

Alternatively, in the mobile body decorative material 10, 210 of the above-described embodiments, the cover member 40, 240, 540 includes the cover base material 46, 546 and the hard coat layer disposed facing the cover base material 46, 546. 52,252 and an adhesion improving layer 54 disposed between the cover substrate 46,546 and the hardcoat layer 52,252. The adhesion improving layer 54 contains an ultraviolet absorber. In this case, it is possible to suppress the risk of discoloration of the cover base material 46, 546 due to ultraviolet rays.

Further, the moving body decorative materials 10 and 210 of the above-described embodiments are exterior materials that are arranged facing the sensor 2 using electromagnetic waves having a longer wavelength than visible light, and are arranged 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, at least in part, is an integer multiple of the half wavelength of said electromagnetic wave. In this case, the electromagnetic wave can pass through the moving body decorative material 10, 210 with high transmittance.

Aspects of the embodiments of the present disclosure are not limited to the individual embodiments described above, and include various modifications that can be conceived by those skilled in the art. is not limited to That is, various additions, changes, and partial deletions are possible without departing from the conceptual idea and spirit of the embodiments of the present disclosure derived from the content defined in the claims and equivalents thereof.

1 mobile object 10, 210 mobile object decorative material 20 decorative sheet 24 sheet base material 26, 126 design layer 28 metal layer 30 embedding layer 32 diffusion layer 35 Fresnel lens portion 40, 240, 540 cover member 46 cover base material 48 Ultraviolet absorbing layers 52, 252 Hard coat layer 54 Adhesion improving layer 56 Adhesive layer

Claims (20)

a decorative sheet having a first surface and a second surface facing the first surface;
a cover member arranged to face 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 a plurality of unit elements formed with unevenness forming a group of parallel straight lines or a group of parallel curves in plan view,
A decorative material for a moving body, wherein unit elements adjacent to each other have different directions in which the parallel straight line group or the parallel curved line group extend in a plan view. a decorative sheet having a first surface and a second surface facing the first surface;
a cover member arranged to face 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 decorative material for a moving body, wherein the design layer includes unit elements having unevenness forming an embossed hologram. The moving body decorative material is an exterior material,
3. The decorative material for a moving body according to claim 1, wherein the dimension of said unit element is 3 mm or more and 200 mm or less. The moving body decorative material is an interior material,
3. The decorative material for a moving body according to claim 1, wherein the dimension of said unit element is 3 mm or more and 200 mm or less. The decorative material for a moving body according to any one of claims 1 to 4, wherein the decorative sheet further includes a metal layer covering the unevenness. 6. The decorative material for a moving body according to claim 5, wherein said metal layer is capable of transmitting electromagnetic waves having a longer wavelength than visible light. 7. The metal layer includes a plurality of metal grains capable of reflecting visible light, and gaps are provided between the plurality of metal grains through which an electromagnetic wave having a wavelength longer than that of visible light can pass. 2. The decorative material for a moving body according to . The decorative sheet further includes a refractive index modulation layer covering the unevenness,
5. The decorative material for a moving body according to claim 1, wherein the refractive index of the design layer and the refractive index of the refractive index modulation layer are different. 9. The moving body according to any one of claims 1 to 8, wherein the decorative sheet is positioned between the design layer and the second surface, or includes a diffusion layer forming the second surface. cosmetic material. The mobile body decorative material according to any one of claims 1 to 9, wherein the cover member includes a cover base material and a hard coat layer arranged to face the cover base material. 11. The decorative material for a moving body according to claim 10, wherein the hard coat layer has unevenness on its surface. The decorative material for a moving object according to claim 10 or 11, wherein the surface of the cover base material facing the hard coat layer is uneven. The decorative material for a moving body according to any one of claims 10 to 12, wherein the cover member includes an ultraviolet absorbing layer arranged between the cover base material and the hard coat layer. The cover member includes a cover base material and a hard coat layer arranged to face the cover base material,
The decorative material for a moving body according to any one of claims 1 to 13, wherein the cover base material and/or the hard coat layer contain an ultraviolet absorber. The cover member includes a cover base material, a hard coat layer arranged to face the cover base material, and an adhesion improving layer arranged 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 14, wherein the adhesion improving layer contains an ultraviolet absorber. The moving body decorative material is an exterior material arranged to face a sensor using an electromagnetic wave having a longer wavelength than visible light, and comprises a first surface arranged to face the sensor; a second surface facing the surface;
The decorative material for a mobile body according to any one of claims 1 to 15, wherein the thickness between said first surface and said second surface in at least part thereof is an integer multiple of a half wavelength of said electromagnetic wave. An electric vehicle comprising the decorative material for a mobile body according to any one of claims 1 to 16. 18. The electric vehicle according to claim 17, wherein the moving body decorative material is applied to a front panel of the electric vehicle. further equipped with a sensor that uses electromagnetic waves with wavelengths longer than visible light,
19. An electric vehicle according to claim 17 or 18, wherein the sensor is arranged facing the first surface. The height of the unevenness is 200 μm or less,
20. The electric vehicle according to any one of claims 17 to 19, wherein the unevenness interval is 200 [mu]m or less.

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