Interior panel for vehicle

Abstract

To provide an interior panel for a vehicle that extracts light from a light source arranged inside by making it permeate a design surface side, and allows a wide range of expression through a pattern projected on the design surface.SOLUTION: In an interior panel 1 for a vehicle, timing of output change of at least a part of a plurality of light emitting elements 12 is independently controlled, and at least one of a surface 102 of a first member 10 and a surface 112 of a second member 11 is provided with an unevenness, and light emitted from the plurality of light emitting elements 12 is reflected or refracted by the unevenness to arrive at a design surface 15. As a result, a pattern according to the shape of the unevenness is projected.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle interior panel. [Background technology]

[0002] Conventionally, a known lighting display device includes a molded product having a light-transmitting decorative film provided on a light-transmitting base material, a light source disposed below the base material, and projections and recesses on the underside of the base material (see Patent Document 1).

[0003] In the illumination display device described in Patent Document 1, the light from the light source changes direction when it is incident on the uneven surface of the base material, and then passes through the base material and the light-transmitting decorative film. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-84821 A Summary of the Invention [Problem to be solved by the invention]

[0005] According to Patent Document 1, because the direction of light incident on the base material changes, it is possible to obtain visual effects such as changes in brightness, design, etc. depending on the angle from which the molded product is observed; however, the visual effects produced by the unevenness of the base material do not greatly increase the range of expression.

[0006] The object of the present invention is to provide an interior panel for a vehicle that transmits light from a light source placed inside to the design surface side and extracts it therefrom, and that can achieve a wide range of expression through the patterns projected onto the design surface. [Means for solving the problem]

[0007] In order to achieve the above object, one aspect of the present invention provides the following vehicle interior panel.

[0008] [1] A vehicle interior panel capable of projecting a pattern from the inside onto a design surface, comprising: a first plate-like member having optical transparency; a second member located on the rear side of the first member as viewed from the design surface; and a plurality of light-emitting elements that irradiate light from the sides into a space between the first member and the second member, wherein the timing of output changes of at least some of the plurality of light-emitting elements is independently controlled; and at least one of a first surface, which is the surface of the first member facing the space, and a second surface, which is the surface of the second member facing the space, is provided with irregularities, and the light emitted from the plurality of light-emitting elements is reflected or refracted by the irregularities to reach the design surface, thereby projecting the pattern according to the shape of the irregularities. [2] The vehicle interior panel according to [1] above, wherein the plurality of light-emitting elements constitute a plurality of light-emitting element groups that irradiate light into the space from different directions. [3] The vehicle interior panel according to [1] or [2] above, wherein each of the plurality of light-emitting elements fades in and fades out when lit and extinguished, respectively. [4] The vehicle interior panel according to [1] or [2] above, wherein both the first surface and the second surface have projections and recesses. [5] The vehicle interior panel described in [4] above, wherein the unevenness provided on the surface of the second component facing the space is coarser than the unevenness provided on the surface of the first component facing the space. [6] The vehicle interior panel according to [1] or [2] above, wherein the plurality of light-emitting elements include a plurality of light-emitting element groups each having different positions in a thickness direction of the vehicle interior panel. [7] The vehicle interior panel according to [1] or [2] above, comprising: a light guide plate arranged in the space; and a second light emitting element arranged opposite a side surface of the light guide plate at a position closer to the first component than the plurality of light emitting elements, and irradiating light to the side surface of the light guide plate, wherein of the first surface and the second surface, only the second surface has an uneven surface. Effect of the Invention

[0009] According to the present invention, it is possible to provide an interior panel for a vehicle that transmits light from a light source arranged inside to the design surface side and extracts it therefrom, and that can achieve a wide range of expression through the patterns projected onto the design surface. [Brief description of the drawings]

[0010] [Figure 1] 1(a) and 1(b) are a vertical sectional view and a top view, respectively, of a vehicle interior panel according to a first embodiment of the present invention. [Diagram 2] 2(a) and 2(b) are a cross-sectional view and a top view, respectively, of another embodiment of the vehicle interior panel according to the first embodiment of the present invention. [Diagram 3] 3(a) and (b) are schematic diagrams showing the intensity of light reflected by the unevenness of the second member in the vehicle interior panel shown in FIG. 2(a) at different locations. [Figure 4] FIG. 4 is a diagram showing an example of the interior of a vehicle in which the vehicle interior panel according to the first embodiment of the present invention is mounted. [Diagram 5] FIG. 5 is a vertical sectional view of a vehicle interior panel according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a vertical sectional view of a vehicle interior panel according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] First Embodiment 1(a) and 1(b) are a vertical sectional view and a top view, respectively, of a vehicle interior panel 1 according to a first embodiment of the present invention.

[0012] The vehicle interior panel 1 is a vehicle interior panel on which a pattern can be projected from the inside onto a design surface 15, and comprises a light-transmitting, plate-like first member 10, a second member 11 located on the back side of the first member 10 when viewed from the design surface 15, a plurality of light-emitting elements 12 that irradiate visible light from the side into a space 16 between the first member 10 and the second member 11, and a light-transmitting film 14 provided on the first member 10.

[0013] Here, the term "side" refers to the side when the direction perpendicular to the design surface 15 of the vehicle interior panel 1 is taken as the thickness direction, that is, the lateral direction in FIG. 1(a).

[0014] In the vehicle interior panel 1, the timing of output changes of at least some of the multiple light-emitting elements 12 is independently controlled, and unevenness is provided on at least one of the surface 102 facing the space 16 of the first member 10 and the surface 112 facing the space 16 of the second member 11, and light emitted from the multiple light-emitting elements 12 is reflected or refracted by the unevenness and reaches the design surface 15, thereby projecting a pattern according to the shape of the unevenness.

[0015] The design surface 15 is the surface on which the design of the vehicle interior panel 1 is applied, that is, the surface of the vehicle interior panel 1. For example, as illustrated in FIG. 1, when the film 14 is provided on the outermost surface of the vehicle interior panel 1, the surface of the film 14 becomes the design surface 15.

[0016] Typically, as shown in FIG. 1, the second member 11 has a shape that functions as a housing, and the first member 10 and a substrate 13 on which a plurality of light-emitting elements 12 are mounted are fixed to the second member 11.

[0017] The first member 10 is made of a material that is transparent to the visible light emitted by the multiple light emitting elements 12, such as an acrylic resin or a polycarbonate (PC) resin.

[0018] The first member 10 may have irregularities 101 on the space 16 side. It is preferable that the irregularities 101 are irregular and have no periodicity in the unevenness pattern. In this case, the pattern formed by the light that is refracted by the irregularities 101 and reaches the design surface 15 also becomes complex and has no periodicity.

[0019] The second member 11 is typically made of a material having low visible light transmittance, such as polypropylene (PP) or acrylonitrile-butadiene-styrene (ABS). The second member 11 has a lower visible light transmittance than the first member 10.

[0020] The second member 11 may have irregularities 111 on the space 16 side. It is preferable that the irregularities 111 also have a non-periodic, irregular uneven pattern, similar to the irregularities 101 of the first member 10. In this case, the pattern formed by the light reflected by the irregularities 111 and reaching the design surface 15 also becomes non-periodic and complex.

[0021] In the vehicle interior panel 1, light emitted from the multiple light-emitting elements 12 into the space 16 is incident on the surface 102 of the first member 10 facing the space 16, either directly or after being reflected by the surface 112 of the second member 11 facing the space 16, and is then transmitted through the first member 10 and the film 14 to be extracted to the outside. As a result, if the first member 10 has unevenness 101, a pattern of light and shade corresponding to the shape is formed on the design surface 15, and if the second member 11 has unevenness 111, a pattern of light and shade corresponding to the shape is formed on the design surface 15.

[0022] The vehicle interior panel 1 has at least one of the unevenness 101 of the first member 10 and the unevenness 111 of the second member 11, but it is preferable that the vehicle interior panel 1 has both the unevenness 101 and the unevenness 111, that is, unevenness is provided on both the surface 102 on the side of the space 16 of the first member 10 and the surface 112 on the side of the space 16 of the second member 11. In this case, a complex pattern according to the shapes of both the unevenness 101 and the unevenness 111 is formed on the design surface 15.

[0023] When the vehicle interior panel 1 has both the unevenness 101 and the unevenness 111, it is preferable that the unevenness 111 is coarser than the unevenness 101. In this case, the unevenness 111 can form a rough pattern, and the unevenness 101 can form a fine pattern.

[0024] Most of the light emitted from the multiple light-emitting elements 12 is reflected by the unevenness 111 of the second member 11, and then refracted by the unevenness 101 of the first member 10, and extracted to the outside. Therefore, a rough pattern is formed first by the unevenness 111 that the light can reach easily, and then a fine pattern is formed by the unevenness 101 that the light can reach easily after being reflected by the unevenness 111, so that a detailed design can be formed on the design surface.

[0025] Here, "rough" refers to a large unevenness or a large size in the planar direction of the concaves and convexities that make up the unevenness. The magnitude of roughness can be compared using a numerical value of the surface roughness, such as the arithmetic mean roughness Ra.

[0026] Furthermore, since the unevenness 101 and the unevenness 111 are intended to form a pattern on the design surface 15, they are coarser than the unevenness generally used for uniform surface emission, which is formed by prism processing, embossing, dot processing, etc. For example, the average value of the spacing between convex portions (spacing between concave portions) in the unevenness is on the order of μm in the unevenness formed by prism processing, embossing, dot processing, etc., whereas the average value of the spacing between convex portions (spacing between concave portions) in the unevenness is 1 mm or more in the unevenness 101 and the unevenness 111.

[0027] The plurality of light emitting elements 12 are typically LED (Light Emitting Diode) chips, but are not limited thereto and may be, for example, LD (Laser Diode) chips. The light emitting colors of the plurality of light emitting elements 12 are not particularly limited, and may be elements capable of emitting a plurality of colors, such as full-color LEDs. The plurality of light emitting elements 12 are mounted on a substrate 13, such as a printed circuit board.

[0028] As described above, in the vehicle interior panel 1, the timing of output change of at least some of the multiple light-emitting elements 12 is independently controlled, for example, the timing of output change of all of the light-emitting elements 12 is independently controlled.

[0029] The unevenness 101 of the first member 10 and the unevenness 111 of the second member 11 form different patterns on the design surface 15 depending on the position of the light irradiation source. Therefore, by independently controlling the timing of output change of at least some of the light-emitting elements 12 and changing the timing of output change of the light-emitting elements 12 arranged at different positions, it is possible to change the pattern formed on the design surface 15 over time. This makes it possible to express, for example, a fluctuating pattern (fluctuating expression).

[0030] In particular, when the unevenness 101 and the unevenness 111 have an irregular unevenness pattern with no periodicity, the change in the pattern due to differences in the position of the light irradiation source becomes large, and therefore the change in the pattern over time due to changing the timing of the output change of the light-emitting elements 12 arranged at different positions becomes larger.

[0031] Independent control of the timing of output change typically means independently controlling the timing of turning on (changing the output from 0 to a predetermined magnitude) and the timing of turning off (changing the output from a predetermined magnitude to 0). For example, the light-emitting elements 12 can be made to emit light one by one or in a predetermined number of turns, or can be made to emit light randomly.

[0032] When turning on and off the light-emitting elements 12 as output changes, it is preferable to fade them in and out when they are turned on and off. This makes it possible to make the change over time of the pattern formed on the design surface 15 smoother by independently controlling the timing of turning on and off at least some of the light-emitting elements 12 among the light-emitting elements 12.

[0033] Furthermore, when each of the multiple light-emitting elements 12 is faded in and faded out when turned on and off, it is preferable that one of the multiple light-emitting elements 12 is always in an emitting state while the multiple light-emitting elements 12 are in operation. In that case, the emission timing of one light-emitting element 12 and the emission timing of the next light-emitting element 12 that emits light overlap, so that the change over time of the pattern formed on the design surface 15 can be made even smoother.

[0034] In addition to the timing of the output change, the maximum value (maximum brightness) of the output of at least some of the light-emitting elements 12 may be independently controlled. This allows the pattern formed on the design surface 15 to change more significantly over time.

[0035] 1(a) and 1(b), in order to irradiate light from the side to as wide an area as possible of the space 16 between the first member 10 and the second member 11. The number and arrangement of the multiple light-emitting elements 12 can be appropriately selected depending on the planar shape and size of the vehicle interior panel 1.

[0036] Fig. 1(b) is a top view of the vehicle interior panel 1 having a rectangular planar shape. The cross section of the vehicle interior panel 1 shown in Fig. 1(a) is formed by cutting along the cutting line AA in Fig. 1(b). In Fig. 1(b), the installation positions of multiple light-emitting elements 12 are indicated by dotted lines.

[0037] 1(a) and (b), a plurality of light-emitting elements 12 form a light-emitting element group aligned along one side of the planar shape of the vehicle interior panel 1. In this way, in order to efficiently irradiate light to the entire space 16, it is preferable to form a light-emitting element group in which a plurality of light-emitting elements 12 are aligned along one side or multiple sides of the planar shape of the vehicle interior panel 1, as exemplified in FIGS.

[0038] When the multiple light-emitting elements 12 include a group of light-emitting elements arranged along one side of the planar shape of the vehicle interior panel 1, in that group of light-emitting elements, for example, the light-emitting elements 12 can be made to emit light in sequence according to the order in which they are arranged, or the light-emitting elements 12 can be made to emit light randomly.

[0039] 1(b) is rectangular, the planar shape of the vehicle interior panel 1 is not particularly limited, and can be a shape according to the shape of the place (e.g., door trim or instrument panel) where the vehicle interior panel 1 is applied. For this reason, the sides of the planar shape of the vehicle interior panel 1 may be curved, and in that case, for example, the light-emitting elements 12 are arranged along the curved lines.

[0040] 2(a) and (b) are a cross-sectional view and a top view of the vehicle interior panel 1 when two light-emitting element groups are formed in which a plurality of light-emitting elements 12 are arranged along two different sides of the planar shape of the vehicle interior panel 1. Fig. 2(b) is a top view when the planar shape of the vehicle interior panel 1 is rectangular. The cross section of the vehicle interior panel 1 shown in Fig. 2(a) is formed by cutting along the cutting line BB in Fig. 2(b).

[0041] In the vehicle interior panel 1 shown in Figure 2(a), the light-emitting elements 12 that make up a group of light-emitting elements arranged along one side of the planar shape are referred to as light-emitting elements 12a, and the light-emitting elements 12 that make up a group of light-emitting elements arranged along the other side are referred to as light-emitting elements 12b.

[0042] Fig. 3(a) is a schematic diagram showing the intensity of light reflected by the unevenness 111 of the second member 11 at each location when the light emitting element 12a is turned on in the vehicle interior panel 1 shown in Fig. 2(a). Also, Fig. 3(b) is a schematic diagram showing the intensity of light reflected by the unevenness 111 of the second member 11 at each location when the light emitting element 12b is turned on in the vehicle interior panel 1 shown in Fig. 2(a).

[0043] 3(a) and (b), a large amount of light is reflected in the portion of the unevenness 111 of the second member 11 facing the light-emitting element 12 that is turned on. Therefore, the portion where a large amount of light is reflected when the light-emitting element 12a is turned on is significantly different from the portion where a large amount of light is reflected when the light-emitting element 12b arranged on a side different from the light-emitting element 12a is turned on. As a result, the pattern formed on the design surface 15 when the light-emitting element 12a is turned on is significantly different from the pattern formed on the design surface 15 when the light-emitting element 12b arranged on a side different from the light-emitting element 12a is turned on.

[0044] Therefore, when a plurality of light-emitting elements 12 form two groups of light-emitting elements arranged along two different sides of the planar shape of the vehicle interior panel 1, as shown in Figures 2(a) and (b), the change in pattern over time due to changing the timing of the output change of the light-emitting elements 12 arranged at different positions is greater than when a plurality of light-emitting elements 12 form a group of light-emitting elements arranged along one side of the planar shape of the vehicle interior panel 1, as shown in Figures 1(a) and (b).

[0045] In the example shown in Figures 2(a) and (b), two groups of light-emitting elements are arranged on two opposing sides, but the arrangement of the two groups of light-emitting elements is not limited to this, and if the directions of light emitted from the two groups of light-emitting elements are different, the change in pattern over time caused by changing the timing of the output change of the light-emitting elements 12 arranged at different positions can be made greater than when multiple light-emitting elements 12 constitute one group of light-emitting elements.

[0046] Furthermore, the greater the number of light-emitting element groups that irradiate light into space 16 from different directions, the greater the change in pattern over time that can be achieved by changing the timing of changing the output of light-emitting elements 12 arranged at different positions. For example, as illustrated in Figures 1(b) and 2(b), when the planar shape of vehicle interior panel 1 is rectangular, it is preferable to arrange light-emitting element groups on each of the four sides of the rectangle.

[0047] In this manner, it is preferable that the plurality of light emitting elements 12 constitute a plurality of light emitting element groups that irradiate light into the space 16 from different directions.

[0048] The light-emitting elements 12 are connected to a control unit that controls the light-emitting operation of the light-emitting elements 12, and emit light upon receiving a light-emitting instruction signal from the control unit. The control unit is, for example, a microcomputer composed of a CPU (Central Processing Unit) that performs calculations and processing on acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, and a ROM (Read Only Memory). For example, the ROM stores a program for the control unit to operate. The RAM is used as a storage area that temporarily stores calculation results, for example. The control unit may be included inside the vehicle interior panel 1, for example, on the substrate 13, or may be included outside the vehicle interior panel 1, for example, in an in-vehicle ECU (Electronic Control Unit).

[0049] The control unit can control the light emitting operation of the multiple light emitting elements 12 in response to, for example, an instruction from a passenger via a switch or the like, or a change in the operating state of the vehicle, such as starting up the drive unit or unlocking.

[0050] The film 14 is made of a material that is transparent to the visible light emitted by the multiple light-emitting elements 12, such as an acrylic resin. The film 14 may be colorless or colored, and may be decorated with a wood grain pattern or the like. When the film 14 is decorated, the pattern decorated on the film 14 can be visually recognized by irradiating the film 14 with light from outside the vehicle interior panel 1, such as external light, even when the light-emitting elements 12 are not in a light-emitting state.

[0051] Fig. 4 is a diagram showing an example of the interior of a vehicle 9 on which the vehicle interior panel 1 is mounted. The vehicle interior panel 1 can be attached to components such as door trims 91 of the doors on the driver's seat 90a and passenger seat 90b sides, door trims 93 of the doors on the rear seat 92 side, and an instrument panel 94. In Fig. 4, examples of areas on which the vehicle interior panel 1 is attached are shown painted gray. The design surface 15 of the vehicle interior panel 1 becomes part of the surface of the component to which the vehicle interior panel 1 is attached.

[0052] Second Embodiment The second embodiment differs from the first embodiment in that a plurality of light-emitting elements are arranged in a line in the thickness direction of the vehicle interior panel. Note that the description of the same parts as those in the first embodiment will be omitted or simplified. Also, the same reference numerals as those in the first embodiment will be used for the parts having the same functions and configurations as those in the first embodiment.

[0053] 5 is a vertical cross-sectional view of a vehicle interior panel 2 according to a second embodiment of the present invention. The vehicle interior panel 2 includes a plurality of light-emitting elements 21 and a plurality of light-emitting elements 22 that irradiate visible light from the side into the space 16, similar to the plurality of light-emitting elements 12 included in the vehicle interior panel 1.

[0054] The multiple light-emitting elements 21 and the multiple light-emitting elements 22 are located at different positions in the thickness direction of the vehicle interior panel 2. Here, the "thickness direction" refers to the direction perpendicular to the design surface 15 of the vehicle interior panel 1, that is, the up-down direction in FIG.

[0055] The light emitting elements 21 and 22 use LED chips or LD chips, similar to the light emitting elements 12 included in the vehicle interior panel 1. The numbers and planar positions of the plurality of light emitting elements 21 and the plurality of light emitting elements 22 can be set similar to the light emitting elements 12 included in the vehicle interior panel 1. Moreover, the numbers and planar positions of the plurality of light emitting elements 21 and the plurality of light emitting elements 22 may be the same or different.

[0056] Since the multiple light-emitting elements 21 and the multiple light-emitting elements 22 are positioned differently in the thickness direction of the vehicle interior panel 2, even if the multiple light-emitting elements 21 and the multiple light-emitting elements 22 are positioned the same in the planar direction, the distances and angles from the unevenness 101 of the first member and the unevenness 111 of the second member 11 are different.

[0057] For this reason, the pattern formed on the design surface 15 when the multiple light-emitting elements 21 are made to emit light differs from the pattern formed on the design surface 15 when the multiple light-emitting elements 22 are made to emit light, and by changing the timing of the output change of the light-emitting elements 21 and the light-emitting elements 22, it is possible to greatly change the pattern formed on the design surface 15 over time. As a result, it is possible to make the change over time of the pattern formed on the design surface 15 greater than when the positions of the multiple light-emitting elements in the thickness direction are constant.

[0058] The vehicle interior panel 2 may further include a plurality of light-emitting elements 21, a plurality of light-emitting elements 22, and a plurality of light-emitting elements positioned at different positions in the thickness direction of the vehicle interior panel 2. That is, the vehicle interior panel 2 may include a plurality of light-emitting element groups positioned at different positions in the thickness direction of the vehicle interior panel 2.

[0059] Third embodiment The third embodiment differs from the first embodiment in that a light guide plate and a light source for the light guide plate are included inside the vehicle interior panel. Note that the description of the same parts as those in the first embodiment will be omitted or simplified. Also, the same reference numerals as those in the first embodiment will be used to denote parts having the same functions and configurations as those in the first embodiment.

[0060] 6 is a vertical cross-sectional view of a vehicle interior panel 3 according to a third embodiment of the present invention. In addition to a first member 10, a second member 11, a plurality of light-emitting elements 12, a substrate 13, and a film 14, the vehicle interior panel 3 includes a light guide plate 31 disposed in a space 16, and a second light-emitting element 32 disposed closer to the first member 10 than the plurality of light-emitting elements 12, facing a side surface 311 of the light guide plate 31, and irradiating visible light to the side surface 311 of the light guide plate 31.

[0061] In the vehicle interior panel 3, of the surface 102 on the side of the space 16 of the first member 10 and the surface 112 on the side of the space 16 of the second member 11, only the surface 112 is provided with projections and recesses.

[0062] In the vehicle interior panel 3, when the multiple light-emitting elements 12 are made to emit light, the light reflected by the irregularities 111 provided on the surface 112 facing the space 16 of the second member 11 passes through the light guide plate 31, the first member 10, and the film 14 to reach the design surface 15, thereby forming a pattern on the design surface 15 according to the shape of the irregularities 111.

[0063] On the other hand, when the second light-emitting element 32 is caused to emit light, the light emitted from the second light-emitting element 32 enters the inside of the light guide plate 31 from the side surface 311 of the light guide plate 31 and propagates inside the light guide plate 31. Most of the light extracted from the surface 312 of the light guide plate 31 facing the first member 10 passes through the first member 10 and the film 14 to reach the design surface 15 without being reflected by the unevenness 111 of the second member 11, and the design surface 15 emits light in an almost uniform manner.

[0064] The light guide plate 31 is made of a material that is transparent to the visible light emitted by the light emitting element 12 and the second light emitting element 32, such as an acrylic resin or a PC resin. Note that a surface 313 of the light guide plate 31 on the second member 11 side may be provided with irregularities for reflecting the light propagating inside the light guide plate 31 at an angle that makes it easy to extract the light from the surface 312.

[0065] The second light emitting element 32 uses an LED chip or an LD chip, similar to the light emitting element 12. The shape and size of the light guide plate 31, as well as the number of the second light emitting elements 32 and their arrangement on the side of the light guide plate 31, can be appropriately selected according to the planar shape and size of the vehicle interior panel 1, etc.

[0066] According to the vehicle interior panel 3, for example, the pattern formed on the design surface 15 when the light-emitting element 12 is illuminated and the pattern formed on the design surface 15 when the second light-emitting element 32 is illuminated can be selectively used according to the mood of the occupant of the vehicle 9. For example, when the occupant wants to relax at night, the light-emitting element 12 can be illuminated to display a flickering pattern on the design surface 15 (relaxation mode), and when the occupant is in an excited mood during the day, the second light-emitting element 32 can be illuminated to cause the design surface 15 to emit surface light (exhilaration mode).

[0067] (Effects of the embodiment) According to the vehicle interior panels 1 to 3 according to the above-mentioned embodiments of the present invention, a pattern formed on the design surface can be changed over time by using a plurality of light emitting elements that can independently control the timing of output change, and then extracting the light by reflecting or refracting it on the concaves and convexes provided inside. This allows a wider range of expression than expression using a pattern that does not change over time.

[0068] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the invention. Furthermore, the components of the above embodiment can be combined in any manner without departing from the spirit of the invention.

[0069] In addition, the above-described embodiments do not limit the scope of the invention according to the claims. Also, it should be noted that not all of the combinations of features described in the embodiments are necessarily essential to the means for solving the problems of the invention. [Explanation of symbols]

[0070] 1, 2, 3 Vehicle interior panels 10 First member 101 Unevenness 102 sides 11 Second member 111 Unevenness 112 sides 12, 21, 22 Light-emitting element 15 Design surface 16 Space 31 Light guide plate 32 Second light-emitting element

Claims

1. An interior panel for a vehicle capable of projecting a pattern from the inside onto a design surface, a plate-like first member having optical transparency; A second member located on the rear side of the first member as seen from the design surface; A plurality of light emitting elements that irradiate light from the side into a space between the first member and the second member; Equipped with In the plurality of light-emitting elements, at least some of the output change timings are independently controlled; an unevenness is provided on at least one of a first surface which is a surface of the first member facing the space and a second surface which is a surface of the second member facing the space; The light emitted from the plurality of light-emitting elements is reflected or refracted by the unevenness and reaches the design surface, so that the pattern corresponding to the shape of the unevenness is projected. Vehicle interior panel.

2. The plurality of light-emitting elements constitute a plurality of light-emitting element groups that irradiate light into the space from different directions. The vehicle interior panel according to claim 1 .

3. Each of the plurality of light-emitting elements fades in and fades out when turned on and off, respectively. The vehicle interior panel according to claim 1 or 2.

4. Both the first surface and the second surface are provided with projections and recesses. The vehicle interior panel according to claim 1 or 2.

5. the unevenness provided on the surface of the second member facing the space is coarser than the unevenness provided on the surface of the first member facing the space; The vehicle interior panel according to claim 4.

6. The plurality of light-emitting elements include a plurality of light-emitting element groups each having a different position in a thickness direction of the vehicle interior panel. The vehicle interior panel according to claim 1 or 2.

7. A light guide plate disposed in the space; a second light-emitting element disposed at a position closer to the first member than the plurality of light-emitting elements so as to face a side surface of the light guide plate and irradiate light onto the side surface of the light guide plate; Equipped with Among the first surface and the second surface, only the second surface is provided with irregularities. The vehicle interior panel according to claim 1 or 2.

Images