Decorative sheets and interior components

The decorative sheet addresses light leakage issues by incorporating a translucent skin layer, intermediate layer, and flexible layer with light-shielding partitions to control light distribution, ensuring clear and intended design display in vehicle interiors.

JP7731311B2Active Publication Date: 2025-08-29TOKAI CHEMICAL INDUSTRIES LTD +1
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Patent Information

Application Number
JP2022057113
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-03-30
Publication Date
2025-08-29
Estimated Expiration
2042-03-30

AI Technical Summary

Technical Problem

Existing decorative sheets in vehicle interiors face issues with light leakage due to light diffusion in the flexible layer, making it difficult to control light distribution and prevent unwanted illumination of non-intended design areas.

Method used

A decorative sheet comprising a translucent skin layer, an intermediate layer with lower translucency, a design layer with recesses forming display areas, and a flexible layer with light-shielding partitions or structures to prevent light leakage between adjacent display areas, along with a control unit to manage light sources.

Benefits of technology

The solution effectively prevents light leakage by using light-shielding partitions and controlled light distribution, ensuring that only intended design areas are illuminated, thereby enhancing the visibility and clarity of displayed designs.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a decorative sheet and an interior member that can prevent leakage of light caused by diffusion of light in a flexible layer.SOLUTION: A decorative sheet 2 comprises, from a front side to a rear side, a skin layer 3, an intermediate layer 4, a design layer 5, and a flexible layer 7. Recesses 6A-6D open in at least one of a front face and a rear face of the design layer 5. The decorative sheet 2 further includes a plurality of display areas A1-D1 formed by the recesses 6A-6D. The plurality of display areas A1-D1 is irradiated with light from the rear side to display predetermined designs on the front face of the skin layer 3. The plurality of display areas A1-D1 is respectively irradiated with light from the rear side through the flexible layer 7. Light shielding partition parts 710AB-710CD of the flexible layer 7 are arranged between adjacent two of the display areas A1-D1 when seen from the front side, thereby preventing light with which one of the display areas A1-D1 is irradiated from leaking into the other of the display areas A1-D1 through the flexible layer 7.SELECTED DRAWING: Figure 3
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Description

[Technical Field]

[0001] The present disclosure relates to a decorative sheet and an interior member used in, for example, vehicle interior fittings. [Background technology]

[0002] In the field of vehicle interiors, development is progressing on decorative sheets that can display designs (such as letters and patterns) on their surface using backlighting. Some decorative sheets allow for the selective display of any design from among multiple designs. Light leakage is a problem with such decorative sheets. Specifically, multiple light sources are arranged on the back side of the multiple designs, one for each design. When displaying a design, there is a problem in that the light for the design to be displayed can leak behind designs that are not to be displayed, causing the design to be displayed as well.

[0003] In this regard, Patent Document 1 discloses a dot matrix display device capable of suppressing light leakage. The dot matrix display device in this document includes, from the front side to the back side, a skin material, a flexible layer, a plurality of LEDs, a light-shielding wall, and a circuit board. The light-shielding wall divides the circuit board into a grid pattern. The plurality of LEDs are assigned to a plurality of regions divided by the light-shielding wall. Focusing on any single LED, the LED is surrounded on all sides by the light-shielding walls. This makes it possible to prevent the light from that LED from irradiating designs for other LEDs. In other words, light leakage can be suppressed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2019 / 225140 Brochure Summary of the Invention [Problem to be solved by the invention]

[0005] In the dot matrix display device of the same document, both the LEDs and the light-shielding wall are arranged on the back side of the flexible layer. Therefore, it is difficult to control the light from the LEDs after it enters the flexible layer. In other words, it is difficult to suppress light leakage due to light diffusion in the flexible layer. Therefore, the present disclosure aims to provide a decorative sheet and an interior component that can suppress light leakage due to light diffusion in the flexible layer. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the decorative sheet of the present disclosure is a decorative sheet comprising: a translucent skin layer; an intermediate layer disposed on the back side of the skin layer and having lower translucency than the skin layer; a design layer disposed on the back side of the intermediate layer and having lower translucency than the intermediate layer; a recess opening on at least one of the front and back sides of the design layer; and a flexible layer disposed on the back side of the design layer and having light diffusibility. The decorative sheet further comprises a plurality of display areas formed by the recesses and displaying a predetermined design on the surface of the skin layer by light irradiated from the backside, and each of the plurality of display areas is irradiated with light from the backside through the flexible layer. The flexible layer has a main body portion and a light-shielding partition portion disposed on the main body portion and having higher light-shielding properties than the main body portion. The light-shielding partition portion is disposed between two adjacent display areas when viewed from the front side, and prevents light intended to illuminate one of the display areas from leaking into the other display area through the flexible layer.

[0007] In order to solve the above problems, the interior member of the present disclosure is characterized by comprising the decorative sheet, a translucent substrate arranged on the back side of the flexible layer, a light source unit that irradiates light onto the multiple display areas through the substrate and the flexible layer, and a control unit that controls the light source unit. [Effects of the Invention]

[0008] The decorative sheet and the flexible layer of the interior member of the present disclosure include a light-shielding partition disposed between two adjacent display areas when viewed from the front side. The light-shielding partition can prevent light intended to illuminate one display area from leaking into the other display area through the flexible layer. This can prevent light leakage caused by light diffusion in the flexible layer. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a layout diagram of interior members according to the first embodiment. [Figure 2] FIG. 2 is a transparent top view of the area within frame II in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view of an interior member according to a second embodiment taken along a front-rear direction. [Figure 5] FIG. 5 is a cross-sectional view of an interior member according to a third embodiment taken along a front-rear direction. [Figure 6] FIG. 6 is a cross-sectional view of an interior member of the fourth embodiment taken along the front and back directions. [Figure 7] FIG. 7 is a cross-sectional view of an interior member of the fifth embodiment taken along the front-rear direction. [Figure 8] FIG. 8 is a cross-sectional view of an interior member of the sixth embodiment taken along the front-rear direction. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the decorative sheet and interior member of the present disclosure will be described.

[0011] First Embodiment [Layout and composition of interior components] First, the layout and configuration of the interior members of this embodiment will be described. Fig. 1 shows a layout diagram of the interior members of this embodiment. Fig. 2 shows a transparent top view (transparent front view) within frame II in Fig. 1. Fig. 3 shows a cross-sectional view taken along the III-III direction in Fig. 2. Note that in Fig. 2, for the convenience of explaining the positional relationship of each member, display areas A1 to D1, light sources 90A to 90D, etc. are shown through the skin layer 3, etc.

[0012] As shown in FIG. 1, the interior member 1 is placed in a console box (interior accessory) 94 in the passenger compartment. That is, the interior member 1 is an interior member for a vehicle. As shown in FIGS. 2 and 3, the interior member 1 includes a decorative sheet 2, a base material 8, a light source unit 9, and a control unit 93. The decorative sheet 2, the base material 8, and the light source unit 9 are layered in this order from the front side (upper side, inside the passenger compartment) to the back side (lower side, outside the passenger compartment). The control unit 93 is electrically connected to the light source unit 9.

[0013] (Decorative sheet 2) The decorative sheet 2 comprises, from the front side to the back side, a skin layer 3, an intermediate layer 4, a design layer 5, and a flexible layer 7. As shown in Figs. 1 and 2, the surface (upper surface) of the skin layer 3 is exposed to the interior of the vehicle. The skin layer 3 is made of synthetic leather and has a layered structure. The skin layer 3 is translucent and flexible.

[0014] The intermediate layer 4 is disposed on the back side of the surface layer 3. The intermediate layer 4 is made of translucent ink and has a layered structure. The intermediate layer 4 is translucent and flexible. The intermediate layer 4 has lower translucency than the surface layer 3. In other words, the intermediate layer 4 is translucent with a smoky color. The intermediate layer 4 is also colored and transparent.

[0015] The design layer 5 is disposed on the back side of the intermediate layer 4. The design layer 5 is made of opaque ink and is layered. The design layer 5 is opaque and flexible. Four recesses 6A to 6D are disposed in the design layer 5. The design layer 5 (excluding the areas where the recesses 6A to 6D are disposed) does not transmit light. Light is irradiated onto the design layer 5 from the back side through the flexible layer 7, which will be described later.

[0016] The recesses 6A to 6D are open to the front and back surfaces of the design layer 5. That is, the recesses 6A to 6D penetrate the design layer 5 in the front-to-back direction (up-and-down direction). The interiors of the recesses 6A to 6D are empty spaces. The recess 6A has an opening 60A, a bottom 61A, and a side surface 62A. The opening 60A is open to the back surface of the design layer 5. The bottom surface 61A is disposed on the back surface of the intermediate layer 4. The bottom surface 61A and the opening 60A face each other in the front-to-back direction. The side surface 62A connects the opening 60A and the bottom surface 61A. The side surface 62A extends in the plane normal direction (front-to-back direction, up-and-down direction) of the surface of the skin layer 3. Like the recess 6A, the recesses 6B to 6D have openings 60B to 60D, bottom surfaces 61B to 61D, and side surfaces 62B to 62D.

[0017] The recesses 6A to 6D define display areas A1 to D1 in the decorative sheet 2. As shown in FIG. 2, when viewed from the front side, the display area A1 (recess 6A) defines the letter "A," the display area B1 (recess 6B) defines the letter "B," the display area C1 (recess 6C) defines the letter "C," and the display area D1 (recess 6D) defines the letter "D." The portions of the decorative sheet 2 where the display areas A1 to D1 (recesses 6A to 6D) are defined are thinner in the front-to-back direction than other portions. This allows light to easily pass through. As shown in black in FIG. 1, the display areas A1 to D1 display predetermined designs "A" to "D" on the surface of the skin layer 3, i.e., the surface of the decorative sheet 2, by light irradiated from the back side.

[0018] The flexible layer 7 is disposed on the back side of the design layer 5. The flexible layer 7 includes a main body 70 and three partition plates 710AB to 710CD. The main body 70 is made of a foamed thermoplastic elastomer. The main body 70 is layered and has flexibility, translucency, and light diffusion properties. The main body 70 includes four blocks 70A to 70D (the same number as the display areas A1 to D1). The blocks 70A to 70D are arranged side by side in the plane direction (left-right direction; a direction intersecting (orthogonal) to the front-to-back direction).

[0019] Each of the three partition plates 710AB to 710CD has a higher light-blocking property than the main body 70. The partition plate 710AB is embedded between the blocks 70A and 70B. The partition plate 710AB separates the blocks 70A and 70B. The partition plate 710BC is embedded between the blocks 70B and 70C. The partition plate 710BC separates the blocks 70B and 70C. The partition plate 710CD is embedded between the blocks 70C and 70D. The partition plate 710CD separates the blocks 70C and 70D.

[0020] As shown in Figure 2, when viewed from the front side, partition plate 710AB is arranged between two display areas A1 and B1 adjacent to each other in the surface direction, partition plate 710BC is arranged between two display areas B1 and C1 adjacent to each other in the surface direction, and partition plate 710CD is arranged between two display areas C1 and D1 adjacent to each other in the surface direction.

[0021] (Base material 8, light source unit 9, control unit 93) As shown in FIG. 3, the substrate 8 is disposed on the back side of the flexible layer 7. The substrate 8 is made of resin and has a layered structure. The substrate 8 is light-transmitting and flexible. The light source unit 9 is disposed on the back side of the substrate 8. As shown in FIGS. 2 and 3, the light source unit 9 includes four light sources (LEDs) 90A to 90D. The surfaces of the light sources 90A to 90D are each capable of emitting light over the entire surface. The target illuminated by the light from the light source 90A is the display area A1. The target illuminated by the light from the light source 90B is the display area B1. The target illuminated by the light from the light source 90C is the display area C1. The target illuminated by the light from the light source 90D is the display area D1.

[0022] The control unit 93 is disposed behind the console box 94 shown in Fig. 1 so as not to be visible from inside the vehicle cabin. The control unit 93 includes a processing unit (CPU) and storage devices (RAM, ROM) not shown. The control unit 93 can control the light sources 90A to 90D (such as on / off control and dimming control).

[0023] [How to use interior materials] Next, a method of using the interior member of this embodiment will be described. As shown in Fig. 3, when the control unit 93 turns off the light sources 90A to 90D, the light sources 90A to 90D do not emit light. Furthermore, the intermediate layer 4 has lower light transmittance than the skin layer 3. Therefore, it is difficult for a user to see the design layer 5 from the front side of the decorative sheet 2 (inside the vehicle cabin).

[0024] For example, when only design "A" of designs "A" to "D" shown in FIG. 1 is to be displayed on the surface of the skin layer 3, the control unit 93 turns on only the light source 90A. Light from the light source 90A enters the block 70A of the flexible layer 7 through the base material 8. Here, the flexible layer 7 is provided with partition plates 710AB to 710CD. This prevents the light from the light source 90A from diffusing from the block 70A to the blocks 70B to 70D. This allows the light from the light source 90A to be irradiated only onto the display area A1 through the block 70A. This allows only design "A" to be displayed on the surface of the skin layer 3. The partition plates 710AB to 710CD can prevent the light from the light sources 90B to 90D from diffusing as well as the light from the light source 90A.

[0025] [Action and effect] Next, the effects of the interior member of this embodiment will be described. As shown in FIGS. 2 and 3, the flexible layer 7 of the decorative sheet 2 includes partition plates 710AB to 710CD. When viewed from the front side, the partition plate 710AB can prevent light intended to illuminate one display region A1 of two adjacent display regions A1 and B1 sandwiched between the partition plate 710AB from leaking into the other display region B1 via the flexible layer 7. The partition plate 710AB can also prevent light intended to illuminate one display region B1 from leaking into the other display region A1 via the flexible layer 7. The same applies to the other partition plates 710BC to 710CD. Therefore, light leakage due to light diffusion in the flexible layer 7 can be suppressed.

[0026] Furthermore, the light sources 90A to 90D are LEDs. Therefore, the light from the light sources 90A to 90D has high linearity (directivity). Therefore, it is possible to prevent the light from the light source 90A from leaking not only into the display area A1, which is the illumination target, but also into the display areas B1 to D1, which are not the illumination target. The same applies to the light from the other light sources 90B to 90D.

[0027] Second Embodiment The interior member of this embodiment differs from the interior member of the first embodiment in that a paint-impregnated partition is provided instead of a partition plate, and that a middle reaching portion is provided at the bottom of the recess. Here, only the differences will be described.

[0028] FIG. 4 shows a cross-sectional view of the interior member of this embodiment taken along the front and back directions. The same reference numerals are used to denote portions corresponding to those in FIG. 3. As shown in FIG. 4, the flexible layer 7 includes three paint-impregnated partitions 711AB-711CD. Each of the three paint-impregnated partitions 711AB-711CD has a higher light-blocking property than the main body 70. The paint-impregnated partitions 711AB-711CD are made of a foam (the foam that forms the main body 70) impregnated with, for example, a white paint (a light-blocking agent (light-reflecting agent) such as titanium oxide) or a black paint (a light-absorbing agent such as titanium black or carbon black). The white paint and the black paint are included in the concept of "light-blocking paint" in this disclosure.

[0029] An intermediate layer reaching portion 610B is disposed over the entire bottom 61B of the recess 6B, an intermediate layer reaching portion 610C is disposed over the entire bottom 61C of the recess 6C, and an intermediate layer reaching portion 610D is disposed over the entire bottom 61D of the recess 6D. The intermediate layer reaching portions 610B to 610D are each disposed within the intermediate layer 4. The intermediate layer reaching portion 610B is disposed near the back surface of the intermediate layer 4, the intermediate layer reaching portion 610D is disposed near the front surface of the intermediate layer 4, and the intermediate layer reaching portion 610C is disposed midway between the intermediate layer reaching portion 610B and the intermediate layer reaching portion 610D. Note that no intermediate layer reaching portion is disposed at the bottom 61A of the recess 6A. In other words, the recess 6A does not reach the interior of the intermediate layer 4.

[0030] Comparing the depths of the recesses 6A to 6D in the front-to-back direction (depths from the openings 60A to 60D in the front-to-back direction), the recesses 6A to 6D become deeper in the order of recesses 6A (shallowest) → 6B → 6C → 6D (deepest). Therefore, when the control unit 93 turns on the light sources 90A to 90D under the same conditions, the display areas become brighter in the order of A1 (darkest) → B1 → C1 → D1 (brightest). In other words, the designs become brighter in the order of "A" → "B" → "C" → "D" (see FIG. 1).

[0031] The interior member of this embodiment and the interior member of the first embodiment have similar effects with respect to the parts that share the same configuration. When the paint-impregnated partitions 711AB-711CD are made of a foam impregnated with white paint, the paint-impregnated partitions 711AB-711CD can reflect light. By utilizing this light reflection, the paint-impregnated partition 711AB can prevent light intended to illuminate one display area A1 of two adjacent display areas A1 and B1 sandwiched between the paint-impregnated partition 711AB from leaking into the other display area B1 through the flexible layer 7 when viewed from the front. The paint-impregnated partition 711AB can also prevent light intended to illuminate one display area B1 from leaking into the other display area A1 through the flexible layer 7. The same applies to the other paint-impregnated partitions 711BC-711CD. Therefore, light leakage due to light diffusion in the flexible layer 7 can be suppressed.

[0032] When the paint-impregnated partitions 711AB-711CD are made of a foam impregnated with black paint, the paint-impregnated partitions 711AB-711CD can absorb light. By utilizing this light absorption, the paint-impregnated partition 711AB can prevent light intended to illuminate one display area A1 of two adjacent display areas A1 and B1 sandwiched between the paint-impregnated partition 711AB from leaking into the other display area B1 through the flexible layer 7. The paint-impregnated partition 711AB can also prevent light intended to illuminate one display area B1 from leaking into the other display area A1 through the flexible layer 7. The same applies to the other paint-impregnated partitions 711BC-711CD. Therefore, light leakage due to light diffusion in the flexible layer 7 can be suppressed.

[0033] Furthermore, according to the interior member of this embodiment, the paint-impregnated partitions 711AB-711CD can be easily formed by partially impregnating the flexible layer 7 with black paint or white paint. Furthermore, the main body 70 and the paint-impregnated partitions 711AB-711CD can be integrally formed.

[0034] Furthermore, with the interior member 1 of this embodiment, differences in light transmittance in the display regions A1 to D1 can be set depending on the presence or absence of the intermediate layer reaching portions 610B to 610D and the front-to-back positions of the intermediate layer reaching portions 610B to 610D. Note that the light transmittance τ in the display regions A1 to D1 is calculated by "τ = I / I0", where I0 is the intensity of incident light entering the decorative sheet 2 and I is the intensity of transmitted light exiting the decorative sheet 2.

[0035] Third Embodiment The interior member of this embodiment differs from the interior member of the first embodiment in that a slit is provided instead of a partition plate, and that an inclined portion is provided on the side surface of the recess. Here, only the differences will be described.

[0036] FIG. 5 shows a cross-sectional view of the interior member of this embodiment taken along the front-rear direction. Portions corresponding to those in FIG. 3 are designated by the same reference numerals. As shown in FIG. 5, the flexible layer 7 has three fused portions 712AB-712CD and three slits 713AB-713CD. The fused portions 712AB-712CD are each formed by partially heat-sealing the flexible layer 7. The fused portion 712AB is formed between the upper end (the front end) of the block 70A and the upper end of the block 70B. The fused portion 712BC is formed between the upper end of the block 70B and the upper end of the block 70C. The fused portion 712CD is formed between the upper end of the block 70C and the upper end of the block 70D.

[0037] Slit 713AB is arranged on the back side of fused portion 712AB, slit 713BC is arranged on the back side of fused portion 712BC, and slit 713CD is arranged on the back side of fused portion 712CD. Slits 713AB to 713CD each open on the back surface of flexible layer 7.

[0038] An inclined portion 620A is disposed along the entire side surface 62A of the recess 6A, an inclined portion 620B is disposed along the entire side surface 62B of the recess 6B, an inclined portion 620C is disposed along the entire side surface 62C of the recess 6C, and an inclined portion 620D is disposed along the entire side surface 62D of the recess 6D. The inclined portions 620A to 620D each extend in a direction intersecting the plane normal to the surface of the skin layer 3.

[0039] The interior member of this embodiment and the interior member of the first embodiment have similar effects in the parts that have a common configuration. According to the interior member 1 of this embodiment, the slits 713AB to 713CD can be easily arranged by partially heat-sealing the flexible layer 7. Note that the slits 713AB to 713CD may also be arranged by partially cutting notches in the flexible layer 7.

[0040] Light traveling within the flexible layer 7 is reflected by the slits 713AB to 713CD. Utilizing this reflection, the slit 713AB can prevent light intended to illuminate one display region A1 of two adjacent display regions A1 and B1 sandwiched between the slit 713AB when viewed from the front side from leaking into the other display region B1 via the flexible layer 7. The slit 713AB can also prevent light intended to illuminate one display region B1 from leaking into the other display region A1 via the flexible layer 7. The same applies to the other slits 713BC to 713CD. Therefore, light leakage due to diffusion of light in the flexible layer 7 can be suppressed.

[0041] Inclined portions 620A to 620D are arranged on the side surfaces 62A to 62D of the recesses 6A to 6D. The inclined portions 620A to 620D extend in a direction intersecting the surface normal of the surface of the skin layer 3. Therefore, when light traveling in the surface normal direction of the recesses 6A to 6D is incident on the inclined portions 620A to 620D, at least a portion of the light may be reflected. Also, at least a portion of the light may be refracted. By utilizing this reflection or refraction, the appearance of the design displayed on the surface of the decorative sheet 2 can be adjusted.

[0042] <Fourth embodiment> The interior member of this embodiment differs from the interior member of the first embodiment in that a space is provided instead of a partition plate, and that a base portion and a deep bottom portion are provided at the bottom of the recess. Here, only the differences will be described.

[0043] Figure 6 shows a cross-sectional view of the interior member of this embodiment taken along the front and back directions. The same reference numerals are used to designate parts corresponding to those in Figure 3. As shown in Figure 6, the flexible layer 7 has three spaces 714AB to 714CD. Space 714AB is interposed between block 70A and block 70B. Space 714BC is interposed between block 70B and block 70C. Space 714CD is interposed between block 70C and block 70D.

[0044] The design layer 5 is made of translucent ink. The design layer 5 is translucent. The bottoms 61A-61D of the recesses 6A-6D include base portions 611A-611D and deep portions 612A-612D. The deep portions 612A-612D are deeper in the front-to-back direction than the base portions 611A-611D. Therefore, when the control unit 93 turns on the light sources 90A-90D, the portions of the display regions A1-D1 corresponding to the deep portions 612A-612D become brighter than the portions corresponding to the base portions 611A-611D. In other words, the outer edges of the designs "A," "B," "C," and "D" (see FIG. 1) become brighter than the interiors, like a border.

[0045] The interior member of this embodiment and the interior member of the first embodiment have similar effects with respect to common configurations. According to the interior member 1 of this embodiment, the spaces 714AB-714CD can be easily defined by arranging the blocks 70A-70D at predetermined intervals. Light traveling through the flexible layer 7 is reflected by the spaces 714AB-714CD. By utilizing this reflection, the space 714AB can prevent light intended to illuminate one display region A1 of the two display regions A1 and B1 adjacent to each other across the space 714AB from leaking into the other display region B1 through the flexible layer 7. Similarly, the space 714AB can prevent light intended to illuminate one display region B1 from leaking into the other display region A1 through the flexible layer 7. The same applies to the other spaces 714BC-714CD. Therefore, light leakage due to light diffusion in the flexible layer 7 can be suppressed.

[0046] Furthermore, according to the interior member 1 of this embodiment, the bottom portions 61A-61D include base portions 611A-611D and deep portions 612A-612D. That is, a step is set in each of the bottom portions 61A-61D. This allows for a difference in light transmittance in the display regions A1-D1.

[0047] Fifth Embodiment The interior member of this embodiment differs from the interior member of the second embodiment in that the light source unit includes a first light source and a second light source. Here, only the difference will be described. Fig. 7 shows a cross-sectional view of the interior member of this embodiment taken along the front and back directions. Note that parts corresponding to those in Fig. 4 are designated by the same reference numerals.

[0048] 7, the light source unit 9 includes four primary light sources (LEDs) 91A to 91D and a single secondary light source (LED) 92. The primary light sources 91A to 91D and the secondary light source 92 are each capable of emitting light over the entire surface. The four primary light sources 91A to 91D are disposed on the back side of the base material 8. The secondary light source 92 is disposed on the side of the base material 8 (on the right side, adjacent in the surface direction).

[0049] The base material 8 has light diffusing properties in addition to being translucent and flexible. Therefore, light entering the base material 8 from any light source (at least one of the primary light sources 91A to 91D and the secondary light source 92) is diffused inside the base material 8. Therefore, the target of illumination from any light source is all of the display regions A1 to D1.

[0050] The method of using the interior material of this embodiment will be described below. Table 1 shows the lighting patterns of the interior material of this embodiment. In Table 1, the numbers (0 to 5) in the design "A" to "D" columns indicate the brightness level. The larger the number, the higher the brightness level. [Table 1]

[0051] The control unit 93 acquires illuminance information about the surroundings of the vehicle from an illuminance sensor (not shown). As shown in Table 1, three levels of lighting patterns corresponding to illuminance (high, medium, low) are stored in advance in the storage device of the control unit 93. The processing device of the control unit 93 compares the illuminance information acquired from the illuminance sensor with the lighting patterns, and controls the turning on and off of the primary light sources 91A to 91D and the secondary light source 92.

[0052] Specifically, as shown in Table 1 and FIG. 7, when the illuminance obtained from the illuminance sensor is high, all light sources (primary light sources 91A-91D, secondary light source 92) are turned off. Comparing the depth of the recesses 6A-6D in the front-to-back direction, the recesses become deeper in the order of 6A (shallowest) → 6B → 6C → 6D (deepest). Therefore, the light transmittance of the display regions A1-D1 increases in the order of display regions A1 (lowest) → B1 → C1 → D1 (highest). Therefore, the brightness levels of the designs "A"-"D" displayed on the surface of the decorative sheet 2 increase in the order of "A" (lowest) → "B" → "C" → "D" (highest).

[0053] When the illuminance obtained from the illuminance sensor is medium, only the second light source 92 is turned on. Therefore, the overall luminance level of the designs "A" to "D" is higher than when the illuminance is high. The luminance levels among the designs "A" to "D" increase in the order of "A" → "B" → "C" → "D."

[0054] When the illuminance obtained from the illuminance sensor is low, all light sources are turned on. As a result, the overall brightness level of designs "A" to "D" is higher than when the illuminance is medium. The brightness levels between designs "A" to "D" increase in the order of "A" → "B" → "C" → "D."

[0055] Let us assume that designs "A" to "D" are visible when the brightness level shown in Table 1 is "2" or higher. In this case, when the illuminance is high (for example, during the day), designs "C" and "D" can be seen by natural light (such as sunlight), when the illuminance is medium (for example, in the morning or evening), designs "B" to "D" can be seen by light from secondary light source 92, and when the illuminance is low (for example, at night), designs "A" to "D" can be seen by light from primary light sources 91A to 91D and secondary light source 92.

[0056] The interior member of this embodiment and the interior member of the first embodiment have similar effects with respect to the parts that share the same configuration. According to the interior member 1 of this embodiment, the light transmittances of the display areas A1 to D1 are set to different values. Furthermore, the control unit 93 can control the on / off of two types of light sources (first light sources 91A to 91D and second light source 92) according to the illuminance information. Therefore, the area and number of designs displayed on the surface of the decorative sheet 2 can be changed according to the illuminance information.

[0057] Sixth Embodiment The interior member of this embodiment differs from the interior member of the first embodiment in that the light source unit includes a first light source and a second light source, and the intermediate layer includes a plurality of intermediate regions. Here, only the differences will be described. Figure 8 shows a cross-sectional view of the interior member of this embodiment taken along the front and back directions. Note that parts corresponding to those in Figure 3 are designated by the same reference numerals.

[0058] As shown in Fig. 8, the light source unit 9 includes four primary light sources (LEDs) 91A to 91D and a single secondary light source (LED) 92. The primary light sources 91A to 91D and the secondary light source 92 are each capable of emitting light over the entire surface. The four primary light sources 91A to 91D are disposed on the back side of the base material 8. The secondary light source 92 is disposed on the side (right side, adjacent in the surface direction) of the base material 8. Each of the five light sources (primary light sources 91A to 91D and secondary light source 92) has a different light source color.

[0059] The base material 8 has light diffusing properties in addition to being translucent and flexible. Therefore, light entering the base material 8 from any light source (at least one of the primary light sources 91A to 91D and the secondary light source 92) is diffused inside the base material 8. Therefore, the target of illumination from any light source is all of the display regions A1 to D1.

[0060] The intermediate layer 4 is made of translucent ink. The intermediate layer 4 has four intermediate regions A2 to D2. The intermediate regions A2 to D2 are formed by partially changing the ink color of the intermediate layer 4. The intermediate regions A2 to D2 are each a different color. The intermediate regions A2 to D2 and the display regions A1 to D1 face each other in the front-to-back direction.

[0061] The control unit 93 acquires time information via the Internet. A plurality of lighting patterns corresponding to different times are stored in advance in a storage device of the control unit 93. The processing device of the control unit 93 compares the time information acquired from the Internet with the lighting patterns, and controls the turning on and off of the primary light sources 91A to 91D and the secondary light source 92.

[0062] The interior member of this embodiment and the interior member of the first embodiment have similar effects with respect to the parts that share the same configuration. According to the interior member 1 of this embodiment, the light sources (primary light sources 91A to 91D, secondary light source 92) each have a different light source color. In addition, the intermediate regions A2 to D2 each have a different color. Therefore, the color of the design displayed on the surface of the decorative sheet 2 can be changed by controlling the control unit 93 to turn the lights on and off.

[0063] For example, by setting the light source color (however, light entering the base material 8 from any light source (which may be single or multiple)) to white and the intermediate region A2 to green, the design "A" on the surface of the decorative sheet 2 can be made green. Also, by setting the light source color to yellow and the intermediate region B2 to blue, the design "B" on the surface of the decorative sheet 2 can be made green. Also, by setting the light source color to white and the intermediate region C2 to blue, the design "C" on the surface of the decorative sheet 2 can be made blue.

[0064] Furthermore, by setting the light source color to red and the intermediate region D2 to green, the design "D" on the surface of the decorative sheet 2 can be made black. That is, by assigning complementary colors to the light source color and the color of the intermediate region, the design on the surface of the decorative sheet 2 can be made black. This makes it possible to virtually erase or make the design less noticeable, even when the light source is on. Note that by appropriately combining the light source color and the color of the intermediate region, the design displayed on the surface of the decorative sheet 2 can be made the same color as the surface. Even in this case, the design can be virtually erased or made less noticeable.

[0065] <Other> The decorative sheet and the interior member according to the present disclosure have been described above. However, the embodiments are not limited to the above-described embodiments. Various modifications and improvements that can be made by those skilled in the art are also possible.

[0066] [About the configuration] There are no particular limitations on the combination of the display regions A1 to D1, intermediate regions A2 to D2, and light-shielding partitions (partition plates 710AB to 710CD, paint-impregnated partitions 711AB to 711CD, slits 713AB to 713CD, and spaces 714AB to 714CD) in the decorative sheet 2. The display regions A1 to D1, intermediate regions A2 to D2, and light-shielding partitions shown in Figures 3 to 8 can be used in any appropriate combination.

[0067] There are no particular limitations on the number, position, size, shape, etc. of the light-shielding partitions. The partition plates 710AB-710CD, paint-impregnated partitions 711AB-711CD, slits 713AB-713CD, and spaces 714AB-714CD may be arranged in any suitable combination on the flexible layer 7 of a single decorative sheet 2. There are no particular limitations on the gas retained in the internal spaces of the slits 713AB-713CD and spaces 714AB-714CD. For example, it may be air, nitrogen, etc.

[0068] The partition plate 710AB may completely or partially separate the blocks 70A and 70B. Even when the partition plate 710AB partially separates the blocks 70A and 70B (for example, when the front edge of the block 70A and the front edge of the block 70B are locally connected), it is possible to suppress the diffusion of light between the blocks 70A and 70B. The same applies to the partition plates 710BC to 710CD and the paint-impregnated partition portions 711AB to 711CD.

[0069] The extending direction of the partition plates 710AB is not particularly limited. They may extend in the front-to-back direction. They may also extend in a direction intersecting the front-to-back direction. The same applies to the partition plates 710BC to 710CD, the paint-impregnated partitions 711AB to 711CD, the slits 713AB to 713CD, and the spaces 714AB to 714CD.

[0070] As shown in Fig. 3, three partition plates 710AB to 710CD are arranged on the decorative sheet 2 for the four display areas A1 to D1. Two more partition plates may be added to the decorative sheet 2. Specifically, two more partition plates may be added to the left side (outside the surface) of the block 70A (display area A1) and the right side (outside the surface) of the block 70D (display area D1). This makes it possible to suppress light leakage from the blocks 70A and 70D, i.e., the flexible layer 7, to the outside. The same applies to the other light-shielding partitions.

[0071] There are no particular limitations on the number, positions, sizes, shapes, etc. of the recesses 6A to 6D. The recesses 6A to 6D of a single decorative sheet 2 may be appropriately combined with the intermediate layer reaching portions 610B to 610D, the inclined portions 620A to 620D, the base portions 611A to 611D, and the deep portions 612A to 612D.

[0072] The openings 60A-60D may be located on the front or back surface of the design layer 5. The bottoms 61A-61D may be located within the design layer 5 (if the design layer 5 is translucent), the back surface of the intermediate layer 4, within the intermediate layer 4, the front surface of the flexible layer 7, or within the flexible layer 7. The same applies to the positions of the bases 611A-611D and deep bottoms 612A-612D. The inclination angle and extension direction (inclination direction) of the inclined portions 620A-620D are not particularly limited.

[0073] The number, position, size, shape, etc. of the display areas A1 to D1 are not particularly limited. The number of the display areas A1 to D1, the number of the designs "A" to "D" displayed on the surface of the decorative sheet 2, and the number of light sources (light sources 90A to 90D, primary light sources 91A to 91D, secondary light source 92) may be the same or different. Multiple display areas may be set for a single design. For example, multiple display areas of different colors may be set for a single grain pattern (design). Conversely, a single display area may be set for multiple designs. For example, a single monochromatic display area may be set for two letters "A" and "B" (design). The display areas may be set corresponding to the light (light source) that is to illuminate the display area. For example, the display area A1 shown in FIG. 3 is set corresponding to the light source 90A that is to illuminate the display area A1.

[0074] The number of display regions A1-D1 and the number of recesses 6A-6D may be the same or different. For example, a single display region A1-D1 may be formed by multiple recesses 6A-6D. Conversely, multiple display regions A1-D1 may be formed by a single recess 6A-6D.

[0075] The display areas A1 to D1 may be arranged in at least the design layer 5 among the intermediate layer 4, the design layer 5, and the flexible layer 7, depending on the number, position, size, shape, etc. of the recesses 6A to 6D. In other words, the design layer 5 may have at least a part of the display areas A1 to D1.

[0076] There are no particular limitations on the type of information that the control unit 93 uses to control the light sources (light sources 90A to 90D, first light sources 91A to 91D, and second light source 92). Examples of setting information include door opening / closing information, on / off information for lights (interior lights, headlights, etc.), approaching / distant distance information for the user, and speed information.

[0077] For example, when controlling the light source using door open / close information (information indicating whether the door is open or closed), the control unit 93 acquires the door open / close information from the door open / close sensor, reads out the lighting pattern associated with the door open / close information from the storage device, and controls the light source according to the lighting pattern, thereby irradiating the desired display area with light.

[0078] Furthermore, when the light source is controlled using light on / off information (information that the lights are on or off), the control unit 93 acquires the light on / off information from the switch for the lights. The subsequent processing is the same as in the case of the door open / close information described above. When the light source is controlled using user approach information (information regarding the approach or departure of a user (such as a finger) from the interior member 1), the control unit 93 acquires the user approach information from a proximity sensor. The subsequent processing is the same as in the case of the door open / close information described above. When the light source is controlled using speed information (information regarding the vehicle speed (including 0 km)), the control unit 93 acquires the speed information from a speed sensor. The subsequent processing is the same as in the case of the door open / close information described above.

[0079] The positions and number of light sources in the light source unit 9 are not particularly limited. A single light source may include multiple LEDs. In this case, the colors of the multiple LEDs may be different. For example, if the single light source 90A shown in FIG. 3 includes three LEDs of red, green, and blue, it can irradiate the display area A1 with white light in addition to the red, green, and blue colors.

[0080] There are no particular limitations on the designs displayed on the surface of the decorative sheet 2 by the display areas A1 to D1 (recesses 6A to 6D). Examples include designs including one or more selected from patterns (polka dots, stripes, checkerboard patterns, wood grain patterns, marble patterns, etc.), characters (alphabet, hiragana, katakana, kanji, numbers, braille, etc.), figures (polygons, circles, etc.), and symbols (device operation buttons, icons indicating device status, etc.).

[0081] The color of the design displayed on the surface of the decorative sheet 2 may be a single color or multiple colors. The color may be expressed on the surface of the decorative sheet 2 by one or more selected from the skin layer 3, the intermediate layer 4, the design layer 5, the flexible layer 7, and the light sources (light sources 90A to 90D, first light sources 91A to 91D, and second light source 92).

[0082] The translucency of the surface layer 3 and the intermediate layer 4 is not particularly limited. They may be colorless and transparent, colored and transparent, translucent, etc. The intermediate layer 4 may have a gradation in color that changes from the back surface to the front surface. This allows the color that appears on the surface of the decorative sheet 2 to be changed depending on the position of the intermediate layer reaching portions 610B to 610D. The gradation of the intermediate layer 4 may be formed by multiple layers. The design layer 5 may or may not be opaque. In other words, the design layer 5 only needs to have lower translucency than the intermediate layer 4. In this case, like the intermediate layer 4, the design layer 5 may have a gradation in color that changes from the back surface to the front surface. This allows the color that appears on the surface of the decorative sheet 2 to be changed depending on the position of the bottoms (but only the bottoms within the design layer 5) 61A to 61D. There are no particular limitations on the colors (hue, saturation, brightness) of the skin layer 3, intermediate layer 4, design layer 5, and light sources (light sources 90A to 90D, primary light sources 91A to 91D, secondary light source 92). There are also no particular limitations on the brightness of the light sources.

[0083] A light-transmitting sensor may be interposed between the design layer 5 and the base material 8 (at least one of the following: between the design layer 5 and the flexible layer 7, or between the flexible layer 7 and the base material 8). In this way, the decorative sheet 2 can be used as a sensor or switch. For example, if a proximity sensor (such as a capacitance sensor) is interposed between the design layer 5 and the base material 8, the control unit 93 can use the proximity sensor to control the light source. There are no particular restrictions on when the light source turns on. The light source may be constantly on. In this case, the control unit 93 is not required.

[0084] The type, number, and position of the light source are not particularly limited. The light source may be an organic EL sheet, an inorganic EL sheet, a phosphorescent sheet, etc. Furthermore, the light source unit 9 may include a light source and a light guide plate (for example, an acrylic plate).

[0085] There are no particular limitations on the interior fittings on which the interior member 1 is to be placed. Examples include door trim, seats, floors, ceilings, instrument panels, glove boxes, steering wheels, center consoles, and cash registers. The surface on which the interior member 1 is to be installed in the interior fittings may be flat or curved. There are no particular limitations on the orientation (front and back directions) of the interior member 1 when it is installed. The interior member 1 may also be placed in the interior fittings of ships, aircraft, buildings, and houses other than vehicles.

[0086] There are no particular limitations on the layer configuration of the interior material 1. Among the surface layer 3, intermediate layer 4, decorative layer 5, flexible layer 7, and base material 8, another layer may be interposed between two adjacent layers in the front-to-back direction. Also, another layer may be disposed on the surface side of the surface layer 3.

[0087] [About the material] The material of the skin layer 3 is not particularly limited. Examples include synthetic leather, resin, elastomer, nonwoven fabric, and various fabrics (woven fabric, knitted fabric, etc.). Specific examples of synthetic leather, resin, and elastomer include acrylic, polyethylene terephthalate, polycarbonate, polyvinyl chloride, silicone, epoxy, polyurethane, styrene-based thermoplastic elastomer, olefin-based thermoplastic elastomer, and dynamically crosslinked thermoplastic elastomer. Examples of nonwoven fabric and various fabrics include polyester, polypropylene, nylon, and cotton. The skin layer 3 may contain a colorant (such as colored polyethylene), a light diffusing agent (such as silicone, acrylic, or titanium oxide), or a light absorbing agent (such as titanium black or carbon black).

[0088] There are no particular limitations on the material of the intermediate layer 4. Examples include resins and elastomers such as acrylic, polyethylene terephthalate, polycarbonate, polyvinyl chloride, silicone, polyester, epoxy, polyurethane, styrene-based thermoplastic elastomer, olefin-based thermoplastic elastomer, and dynamically crosslinked thermoplastic elastomer. The intermediate layer 4 may contain the aforementioned colorants, light diffusing agents, and light absorbing agents.

[0089] There are no particular limitations on the material of the design layer 5. Examples include resins and elastomers such as acrylic, polyethylene terephthalate, polycarbonate, polyvinyl chloride, silicone, polyester, epoxy, polyurethane, styrene-based thermoplastic elastomer, olefin-based thermoplastic elastomer, and dynamically crosslinked thermoplastic elastomer. The design layer 5 may contain the aforementioned colorants, light diffusing agents, and light absorbing agents.

[0090] The material of the main body 70 of the flexible layer 7 is not particularly limited. Examples include elastomers such as styrene-based thermoplastic elastomers, olefin-based thermoplastic elastomers, and dynamically crosslinked thermoplastic elastomers, and foams such as polyurethane foam. The light-blocking paint contained in the paint-impregnated partitions 711AB to 711CD is not particularly limited. The light-blocking paint may be white paint (light-reflective paint), or may be black paint (light-absorbing paint), or may be a combination of white and black paints.

[0091] There are no particular limitations on the material of the base material 8. Examples include resins and elastomers such as acrylic, polyethylene terephthalate, polycarbonate, polyvinyl chloride, silicone, polyester, epoxy, polyurethane, styrene-based thermoplastic elastomer, olefin-based thermoplastic elastomer, and dynamically crosslinked thermoplastic elastomer. To ensure the shape retention of the interior member 1, the base material 8 only needs to be harder than the other layers (skin layer 3, intermediate layer 4, design layer 5, and flexible layer 7).

[0092] The members (e.g., the base material 8, the flexible layer 7, etc.) interposed between the light sources (light sources 90A to 90D, primary light sources 91A to 91D, secondary light source 92) and the display regions A1 to D1 may be translucent or light diffusing. There are no particular limitations on the method for imparting light diffusing properties to these members. For example, a light diffusing agent (e.g., silicone, acrylic, titanium oxide) having a refractive index different from that of a transparent base material may be dispersed in the base material. Furthermore, these members may have a light introduction hole (a hole interposed between the light source and the display region and extending in the front-to-back direction).

[0093] There are no particular limitations on the method for laminating the skin layer 3, intermediate layer 4, and design layer 5. Screen printing, gravure printing, inkjet printing, flexographic printing, etc. may be used. The layers may also be laminated by adhesion, vapor deposition, etc. There are no particular limitations on the method for forming the recesses 6A to 6D in the design layer 5. In addition to laser processing, photoetching, etc. may also be used.

[0094] There are no particular limitations on the method for fastening the skin material (a laminate of the skin layer 3, intermediate layer 4, and design layer 5) to the flexible layer 7. For example, if the installation surface of the interior member 1 in an interior part (console box 94 shown in FIG. 1) is convex, bulging outward, the flexible layer 7 and skin material on the outside of the curvature radius will be pressed against the base material 8 on the inside of the curvature radius. This pressure contact force can be used to fasten the flexible layer 7 to the skin material. Conversely, if the installation surface of the interior member 1 in an interior part is concave, bulging outward, the above-mentioned pressure contact force does not apply. In this case, the flexible layer 7 and skin material can be fastened using adhesive, double-sided tape, or the like. [Explanation of symbols]

[0095] 1: interior member, 2: decorative sheet, 3: surface layer, 4: intermediate layer, 5: design layer, 6A to 6D: recess, 60A to 60D: opening, 61A to 61D: bottom, 610B to 610D: intermediate layer reaching portion, 611A to 611D: base portion, 612A to 612D: deep bottom portion, 62A to 62D: side, 620A to 620D: inclined portion, 7: flexible layer, 70: main body portion, 70A to 70D: block, 710A B to 710CD: Partition plate, 711AB to 711CD: Paint impregnated partition, 712AB to 712CD: Fusion section, 713AB to 713CD: Slit, 714AB to 714CD: Space, 8: Base material, 9: Light source section, 90A to 90D: Light source, 91A to 91D: First light source, 92: Second light source, 93: Control section, 94: Console box, A1 to D1: Display area, A2 to D2: Intermediate area

Claims

1. a translucent skin layer; an intermediate layer disposed on the back side of the skin layer and having a lower light transmittance than the skin layer; a design layer disposed on the back side of the intermediate layer and having lower light transmittance than the intermediate layer; A recess that opens on at least one of the front and back surfaces of the design layer; a flexible layer having light diffusibility and disposed on the back side of the design layer; A decorative sheet comprising: The present invention further includes a plurality of display areas formed by the recesses, which display a predetermined design on the surface of the skin layer by light irradiated from the back side, Each of the plurality of display areas is irradiated with light from the rear side through the flexible layer, the flexible layer has a main body portion and a light-shielding partition portion that is disposed on the main body portion and has a higher light-shielding property than the main body portion; the light-shielding partitions extend inside the flexible layer in a front-to-back direction, do not protrude from the flexible layer to the back side, and divide the main body into blocks the number of which is equal to the number of the display areas; The decorative sheet is characterized in that the light-shielding partition is arranged between two adjacent display areas when viewed from the front side, and prevents light intended to illuminate one of the display areas from leaking into the other display area through the flexible layer.

2. The decorative sheet according to claim 1 , wherein the light-shielding partitions are paint-impregnated partitions in which a material forming the main body is impregnated with a light-shielding paint.

3. The decorative sheet according to claim 1 , wherein the light-shielding partitions are slits that open on the rear surface of the main body.

4. The decorative sheet according to claim 1 , wherein the light-shielding partition is a partition plate embedded in the main body.

5. 5. The decorative sheet according to claim 1, wherein any one of the plurality of display areas has a different light transmittance from the other display areas.

6. The decorative sheet according to claim 5 , wherein the plurality of display areas each have a different light transmittance.

7. The decorative sheet according to claim 5, wherein the recess forming at least some of the display areas among the plurality of display areas has an opening that opens to the back surface of the design layer, and a bottom portion facing the opening and having an intermediate layer reaching portion that is disposed within the intermediate layer.

8. The recess forming at least one of the plurality of display areas has an opening that opens to the rear surface of the design layer and a bottom portion facing the opening, The decorative sheet according to claim 5 , wherein the bottom portion has a base portion and a deep portion that is deeper than the base portion.

9. The recess forming at least a portion of the display areas among the plurality of display areas has an opening that opens to the rear surface of the design layer, a bottom portion facing the opening, and a side surface connecting the opening and the bottom portion, The decorative sheet according to claim 5 , wherein the side surface has an inclined portion extending in a direction intersecting a plane normal to the surface of the skin layer.

10. A translucent skin layer; an intermediate layer disposed on the back side of the skin layer and having a lower light transmittance than the skin layer; a design layer disposed on the back side of the intermediate layer and having lower light transmittance than the intermediate layer; A recess that opens on at least one of the front and back surfaces of the design layer; a flexible layer having light diffusibility and disposed on the back side of the design layer; A decorative sheet comprising: The present invention further includes a plurality of display areas formed by the recesses, which display a predetermined design on the surface of the skin layer by light irradiated from the back side, Each of the plurality of display areas is irradiated with light from the rear side through the flexible layer, the flexible layer has a main body portion and a light-shielding partition portion that is disposed on the main body portion and has a higher light-shielding property than the main body portion; the light-shielding partition is disposed between two adjacent display areas when viewed from the front side, and prevents light intended to illuminate one of the display areas from leaking into the other display area through the flexible layer; Among the plurality of display areas, any one of the display areas has a different light transmittance from the other display areas, A decorative sheet characterized in that the recess forming at least some of the display areas among the plurality of display areas has an opening that opens to the back surface of the design layer, and a bottom facing the opening and having an intermediate layer reaching portion that is positioned within the intermediate layer.

11. A translucent skin layer; an intermediate layer disposed on the back side of the skin layer and having a lower light transmittance than the skin layer; a design layer disposed on the back side of the intermediate layer and having lower light transmittance than the intermediate layer; A recess that opens on at least one of the front and back surfaces of the design layer; a flexible layer having light diffusibility and disposed on the back side of the design layer; A decorative sheet comprising: The present invention further includes a plurality of display areas formed by the recesses, which display a predetermined design on the surface of the skin layer by light irradiated from the back side, Each of the plurality of display areas is irradiated with light from the rear side through the flexible layer, the flexible layer has a main body portion and a light-shielding partition portion that is disposed on the main body portion and has a higher light-shielding property than the main body portion; the light-shielding partition is disposed between two adjacent display areas when viewed from the front side, and prevents light intended to illuminate one of the display areas from leaking into the other display area through the flexible layer; Among the plurality of display areas, any one of the display areas has a different light transmittance from the other display areas, The recess forming at least one of the plurality of display areas has an opening that opens to the rear surface of the design layer and a bottom portion facing the opening, The decorative sheet is characterized in that the bottom portion has a base portion and a deep portion that is deeper than the base portion.

12. A decorative sheet according to any one of claims 1 to 9, a light-transmitting substrate disposed on the back side of the flexible layer; a light source unit that irradiates light onto the plurality of display areas through the base material and the flexible layer; a control unit that controls the light source unit; An interior component comprising:

13. The substrate has light diffusibility, the light source unit includes a plurality of first light sources arranged on the back side of the base material and a second light source arranged on a side of the base material, The interior member according to claim 12 , wherein the control unit controls the plurality of first light sources and the plurality of second light sources in accordance with predetermined information.

14. An interior component as described in Claim 13, wherein the information is one of setting information, time information, and illuminance information.

15. The plurality of first light sources each have a different light source color, the intermediate layer has a plurality of intermediate regions facing the plurality of display regions, The interior member according to claim 13 or 14, wherein any one of the plurality of intermediate regions has a color different from the other intermediate regions.

16. An interior component as described in Claim 15, wherein each of the multiple intermediate regions is a different color.

17. A translucent skin layer; an intermediate layer disposed on the back side of the skin layer and having a lower light transmittance than the skin layer; a design layer disposed on the back side of the intermediate layer and having lower light transmittance than the intermediate layer; A recess that opens on at least one of the front and back surfaces of the design layer; a flexible layer having light diffusibility and disposed on the back side of the design layer; A decorative sheet comprising: The present invention further includes a plurality of display areas formed by the recesses, which display a predetermined design on the surface of the skin layer by light irradiated from the back side, Each of the plurality of display areas is irradiated with light from the rear side through the flexible layer, the flexible layer has a main body portion and a light-shielding partition portion that is disposed on the main body portion and has a higher light-shielding property than the main body portion; a decorative sheet, wherein the light-shielding partition is disposed between two adjacent display areas when viewed from the front side, and prevents light intended to illuminate one of the display areas from leaking into the other display area through the flexible layer; a light-transmitting substrate disposed on the back side of the flexible layer; a light source unit that irradiates light onto the plurality of display areas through the base material and the flexible layer; a control unit that controls the light source unit; Equipped with The substrate has light diffusing properties, the light source unit includes a plurality of first light sources arranged on the back side of the base material and a second light source arranged on a side of the base material, The control unit is an interior member that controls the plurality of first light sources and the plurality of second light sources in accordance with predetermined information.

Citation Information

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