Decorative part and method for manufacturing the decorative part

Abstract

To secure preferable contrast between a part where a predetermined pattern is positioned and its adjacent part, when a design layer is viewed with an illuminating device on.SOLUTION: A decorative component 2 in which a predetermined pattern 3 is visible when an illuminating device 30 provided on a back surface is turned on and the predetermined pattern 3 is invisible when the illuminating device 30 is turned off, includes: a light shielding layer 15 in which laser processing portions 17 for transmitting light of the illuminating device 30 are formed in a predetermined pattern 3 and that has a material that reacts to laser light; a transparent layer 14 that is placed on a surface of the light shielding layer 15 in the form of layers and is made of a material that does not react to laser light; and a design layer 13 that is placed on a surface of the transparent layer 14 in the form of layers and has a predetermined transmittance at which light is transmitted when the illuminating device 30 is turned on and the predetermined pattern 3 is invisible when the illuminating device 30 is turned off; wherein the design layer 13 and the transparent layer 14 have substantially the same refractive index.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a decorated part and a method for manufacturing the decorated part. [Background technology]

[0002] Patent Document 1 discloses an illuminating decorative sheet having a light-blocking colored layer partially laminated on a base sheet and a light-blocking colored layer laminated entirely or partially, and having a light-blocking pattern portion and a light-transmitting pattern portion formed thereon. In this illuminating decorative sheet, when a light source irradiates the light-transmitting pattern portion (predetermined pattern), it glows, making it easy to recognize.

[0003] In addition to screen printing, laser processing is also known as a method for forming a light-transmitting pattern portion. Patent Document 2 discloses a panel member in which an opaque printed layer is removed with laser light to form holes that allow light to pass through. Since laser light reacts with carbon to generate heat, this printed layer is made to contain carbon black. However, there is a risk that after the laser light penetrates the layer to be processed, it may also process the layer on the back side.

[0004] In response to this, Patent Document 3 discloses a laminate in which a barrier layer is provided on the backside of a laser coloring layer that is the target of laser processing, and an offset printing layer further on the backside of that is protected. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-272935 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-030290 [Patent Document 3] International Publication No. 2017 / 014258 Summary of the Invention [Problem to be solved by the invention]

[0006] When forming the light-transmitting pattern portion of the illuminating decorative sheet of Patent Document 1, it is also conceivable to apply laser processing and to apply a barrier layer as in Patent Document 3. That is, the barrier layer of Patent Document 3 is interposed between the light-blocking colored layer and the light-transmitting colored layer of Patent Document 1.

[0007] However, in such a configuration, because an extra barrier layer is interposed, light may be reflected at the interface between the translucent colored layer and the barrier layer depending on the difference in refractive index between the two, which may make it difficult to clearly see the specified pattern that is to be transmitted through the light.

[0008] The present invention has been made in view of the above points. [Means for solving the problem]

[0009] According to one aspect of the present invention, a decorative part in which a predetermined pattern is visible when a lighting device provided on the back is turned on and the predetermined pattern is not visible when the lighting device is turned off comprises: a light-shielding layer having holes formed in the predetermined pattern to transmit light from the lighting device and made of a material that reacts to laser light; a transparent layer laminated on the surface of the light-shielding layer and made of a material that does not react to laser light; and a design layer laminated on the surface of the transparent layer and having a predetermined transmittance that transmits light when the lighting device is turned on and makes the predetermined pattern not visible when the lighting device is turned off, wherein the design layer and the transparent layer have substantially the same refractive index.

[0010] According to another aspect of the present invention, a manufacturing method for a decorative part in which a predetermined pattern is visible when a lighting device provided on the back is turned on and the predetermined pattern is invisible when the lighting device is turned off includes a lamination process for forming a laminated film portion by stacking a light-shielding layer having a material that reacts to laser light and blocking light from the lighting device, and a design layer having a predetermined transmittance that transmits light when the lighting device is turned on and makes the predetermined pattern invisible when the lighting device is turned off, and sandwiching a transparent layer made of a material that does not react to laser light and having substantially the same refractive index as the design layer between the light-shielding layer and the design layer, and a laser processing process for irradiating laser light to the laminated film portion from the light-shielding layer side and removing part of the light-shielding layer with the laser light to form holes in the predetermined pattern. [Effects of the Invention]

[0011] In the above-described embodiment, the decorative component includes a transparent layer that is not sensitive to laser light, between the design layer and the light-shielding layer that is sensitive to laser light. Therefore, when performing laser processing from the light-shielding layer side, it is possible to remove a portion of the light-shielding layer to form a hole for transmitting light from a lighting device, while the design layer is protected from laser light by the transparent layer. Furthermore, the design layer and the transparent layer have substantially the same refractive index. Therefore, when a lighting device is provided on the back of the decorative component and light is irradiated, diffuse reflection and diffusion of light at the interface between the design layer and the transparent layer can be prevented. Therefore, when the design layer is viewed with the lighting device turned on, a desirable contrast can be ensured between the area where the predetermined pattern is located and the adjacent area. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of an instrument panel to which a decorative part according to an embodiment of the present invention is applied. [Figure 2] FIG. 2 is a cross-sectional view showing only a part of the decorative component. [Figure 3A] FIG. 3A is a cross-sectional view of the decorative component, illustrating the state when the lighting device is turned off. [Figure 3B]FIG. 3B is a diagram illustrating the display of a predetermined pattern in the state of FIG. 3A. [Figure 4A] FIG. 4A is a cross-sectional view of the decorative component, illustrating the lighting device when it is turned on. [Figure 4B] FIG. 4B is a diagram illustrating the display of a predetermined pattern in the state of FIG. 4A. [Figure 5] FIG. 5 is a cross-sectional view illustrating the lamination process. [Figure 6] FIG. 6 is a cross-sectional view illustrating the shaping step. [Figure 7] FIG. 7 is a cross-sectional view illustrating the laser processing step. [Figure 8] FIG. 8 is a cross-sectional view illustrating the molding process. DETAILED DESCRIPTION OF THE INVENTION

[0013] A decorative part 2 according to an embodiment of the present invention and a method for manufacturing the decorative part 2 will be described below with reference to the accompanying drawings.

[0014] First, a decorative part 2 and an instrument panel 1 of a vehicle (not shown) such as an automobile to which the decorative part 2 is applied will be described with reference to Figures 1 and 2. Figure 1 is a perspective view of the instrument panel 1 to which the decorative part 2 is applied. Figure 2 is a cross-sectional view showing only a part of the decorative part 2.

[0015] As shown in Figures 1 and 2, the instrument panel 1 has a decorative part 2 and a lighting device 30 (see Figure 2). The instrument panel 1 is provided inside the passenger compartment of a vehicle. The instrument panel 1 is provided at the front of the passenger compartment, including in front of the driver's seat. Instruments (not shown) that display vehicle information are arranged on the instrument panel 1.

[0016] The decorative component 2 is formed in a free-form shape, at least a portion of which is a three-dimensionally curved surface. The decorative component 2 is exposed inside the vehicle cabin. The decorative component 2 has a plurality of predetermined patterns 3.

[0017] The decorative part 2 is provided as part of the instrument panel 1. A predetermined pattern 3 is visible on the decorative part 2 when an illumination device 30 provided on the rear surface of the decorative part 2 is turned on, and the predetermined pattern 3 is not visible when the illumination device 30 is turned off. In other words, the predetermined pattern 3 on the decorative part 2 appears to be absent when the illumination device 30 is turned off, and the predetermined pattern 3 is visible only when the illumination device 30 is turned on.

[0018] The decorative part 2 is pressed by a user. The decorative part 2 functions as an operating unit (switch) for operating an air conditioning system (air conditioner). The predetermined pattern 3 is a design or text that indicates what operation the operating unit is used for. The decorative part 2 includes a laminated film part 10 and a base material 20 (see FIG. 2). In the following, the surface of the decorative part 2 that is exposed inside the vehicle cabin will be referred to as the "front surface," the surface facing the lighting device 30 will be referred to as the "rear surface," and the direction in which the laminated film part 10 is laminated will be referred to as the "stacking direction."

[0019] 2, the laminated film part 10 is formed by stacking multiple layers with different functions in the stacking direction. The laminated film part 10 has a surface protection layer 11, a support film 12, a design layer 13, a transparent layer 14, and a light-shielding layer 15.

[0020] The surface protection layer 11 is a UV coating for protecting the surface of the decorative part 2. The surface protection layer 11 is made of a colorless and transparent resin material.

[0021] The support film 12 is a film-like member that supports the design layer 13, the transparent layer 14, and the light-shielding layer 15 during the production of the decorative part 2. The support film 12 is formed into a film shape from a colorless and transparent material, specifically, PC (polycarbonate) resin.

[0022] The design layer 13 is laminated on the back surface of the support film 12 and on the surface of the transparent layer 14. The design layer 13 is formed by printing a PU (polyurethane) ink containing a pigment on the support film 12. The design layer 13 is a translucent decorative layer that reflects light irradiated from the front surface and transmits light from the lighting device 30 irradiated from the back surface. In other words, the design layer 13 transmits light when the lighting device 30 is turned on, and has a predetermined transmittance that makes the predetermined pattern 3 invisible when the lighting device 30 is turned off. The design layer 13 is made of a colored translucent material in which a pigment is added to the same colorless and transparent material that makes up the transparent layer 14.

[0023] The design layer 13 has a main design layer 13a and a chromaticity correction layer 13b. The main design layer 13a and the chromaticity correction layer 13b are each formed by printing PU inks containing different pigments. Because the main design layer 13a and the chromaticity correction layer 13b contain the same PU ink as the transparent layer 14, they have substantially the same refractive index as the transparent layer 14. In other words, the design layer 13 is formed by multiple layers, each of which has substantially the same refractive index as the transparent layer 14.

[0024] The main design layer 13a forms a design that is visible from the surface, such as piano black or wood grain.

[0025] The chromaticity correction layer 13b is formed in the opposite color of the light that passes through the main design layer 13a and is visible from the surface side, so that the light from the lighting device 30 that passes through the design layer 13 appears white. For example, if the main design layer 13a is piano black, the chromaticity correction layer 13b is formed as a blue layer, which is the opposite color of yellow, because the light that passes through the main design layer 13a reacts with the carbon in the piano black and appears yellow. In this way, the color of the chromaticity correction layer 13b is set to match the color of the main design layer 13a. Note that if the light that passes through the main design layer 13a appears white, the chromaticity correction layer 13b does not need to be provided.

[0026] The transparent layer 14 is laminated on the back surface of the design layer 13 and on the surface of the light-shielding layer 15. The transparent layer 14 does not contain carbon. That is, the transparent layer 14 is made of a material that does not react to laser light. "Not reacting to laser light" means that the material alone will not be processed when irradiated with laser light, and even if it is processed, the amount is minimal. In this embodiment, even if the transparent layer 14 melts due to the heat generated during laser processing of the light-shielding layer 15 as described below, this is not interpreted as a reaction to the laser light. The transparent layer 14 is made of a colorless and transparent material. The transparent layer 14 is formed by printing a pigment-free PU ink on the design layer 13. The PU ink that constitutes the transparent layer 14 is the same as the PU ink that constitutes the design layer 13. The transparent layer 14 protects the design layer 13 from laser light during the laser processing process described below. The transparent layer 14 is formed to a thickness of at least 5 μm, preferably 5 to 15 μm. As the laser light that reacts with carbon, for example, a CO2 laser, a YAG laser, a hybrid laser of CO2 and YAG, etc. can be used.

[0027] The light-shielding layer 15 has a black mask layer 15a, a pressing layer 15b, a protective layer 15c, and a binder layer 15d arranged in the stacking direction. The light-shielding layer 15 contains carbon. That is, the light-shielding layer 15 has a material that reacts to laser light. The light-shielding layer 15 has a light-shielding portion 16 that blocks light from the lighting device 30, and a laser-processed portion 17 that is formed in the light-shielding portion by laser processing into the shape of a predetermined pattern 3 and serves as a hole that allows light from the lighting device 30 to pass through, arranged in a direction perpendicular to the stacking direction.

[0028] The black mask layer 15a is a black, opaque layer. The black mask layer 15a is provided in an area other than the laser processed area 17 where the predetermined pattern 3 is formed, and forms the light-shielding area 16. The black mask layer 15a is formed by printing a PU ink containing a pigment on the transparent layer 14.

[0029] The pressing layer 15b is provided to press the black mask layer 15a. The pressing layer 15b is provided in a portion excluding the laser processed portion 17 where the predetermined pattern 3 is formed. The pressing layer 15b is formed by printing a PU ink containing a pigment on top of the black mask layer 15a.

[0030] The protective layer 15c is provided to protect the black mask layer 15a. The protective layer 15c is provided in a portion other than the laser processed portion 17 where the predetermined pattern 3 is formed. The protective layer 15c is formed by printing a PU ink containing a pigment on the pressing layer 15b.

[0031] The binder layer 15d is a binder material for bonding the light-shielding layer 15 and the base material 20. The binder layer 15d is provided in a portion other than the laser-processed portion 17 where the predetermined pattern 3 is formed. The binder layer 15d is formed by printing a PU ink containing a pigment on the protective layer 15c.

[0032] The substrate 20 is provided on the back surface of the light-shielding layer 15. The substrate 20 is formed from a resin different from that of the laminated film unit 10, specifically from a PC (polycarbonate) resin. Instead of PC resin, PMMA (Poly Methyl Methacrylate: acrylic) or PC resin + ABS (Acrylonitrile Butadiene Styrene) resin may be used. The substrate 20 is formed to cover the back surface of the light-shielding unit 16 and to penetrate into the laser-processed unit 17. The substrate 20 guides light emitted by the lighting device 30 to the laser-processed unit 17, which forms the predetermined pattern 3. The substrate 20 is molded integrally with the laminated film unit 10 by a molding process described below.

[0033] Next, the function of the decorative part 2 will be described with reference to Fig. 3A to Fig. 4B. Fig. 3A is a cross-sectional view of the decorative part 2, illustrating the state when the lighting device 30 is turned off. Fig. 3B is a diagram illustrating the display of predetermined pattern 3 in the state of Fig. 3A. Fig. 4A is a cross-sectional view of the decorative part 2, illustrating the state when the lighting device 30 is turned on. Fig. 4B is a diagram illustrating the display of predetermined pattern 3 in the state of Fig. 4A. Figs. 3B and 4B show an example of predetermined pattern 3 used to set the air conditioner to internal air circulation.

[0034] As shown in Fig. 3A, when the lighting device 30 is turned off, light such as natural light irradiated from the surface of the decorative component 2 is reflected by the surface of the main design layer 13a of the design layer 13 and does not pass through the decorative component 2. Therefore, as shown in Fig. 3B, the predetermined pattern 3 is not visible from the surface.

[0035] On the other hand, as shown in Fig. 4A, when the lighting device 30 is turned on, light irradiated from the back surface of the decorative part 2 by the lighting device 30 passes through the decorative part 2 from the back surface to the front surface. Therefore, as shown in Fig. 4B, the predetermined pattern 3 is visible from the front surface.

[0036] In this case, the design layer 13 is formed of multiple layers (main design layer 13a and chromaticity correction layer 13b), each of which has substantially the same refractive index as the transparent layer 14. This prevents light from the lighting device 30 from being diffused and scattered at the interface between the design layer 13 and the transparent layer 14. If such diffuse reflection occurs, a small amount of light will be transmitted through parts of the design layer 13 that do not have the predetermined pattern 3, resulting in the outline of the predetermined pattern 3 appearing blurred. In contrast, this embodiment prevents the outline of the predetermined pattern 3 from appearing blurred. In other words, when the lighting device 30 is turned on and the design layer 13 is viewed, a desirable contrast is ensured between the area where the predetermined pattern 3 is located and its adjacent areas.

[0037] Next, a manufacturing method for manufacturing the decorative component 2 will be described with reference to FIGS.

[0038] First, as shown in Figure 5, a light-shielding layer 15 containing carbon that blocks light from the lighting device 30 and a design layer 13 having a predetermined transmittance that transmits light when the lighting device 30 is turned on and makes the predetermined pattern 3 invisible when the lighting device 30 is turned off are laminated so that a transparent layer 14 that does not contain carbon and has substantially the same refractive index as the design layer 13 is sandwiched between them (lamination process).

[0039] Specifically, PU inks constituting main design layer 13a and chromaticity correction layer 13b are printed in order from the top (rear surface) of support film 12 to form design layer 13, PU inks constituting transparent layer 14 are printed on top of design layer 13, and PU inks constituting black mask layer 15a, pressing layer 15b, protective layer 15c, and binder layer 15d are printed in order from top of transparent layer 14 to form light-shielding layer 15. In this way, laminated film part 10 is formed.

[0040] In this case, the design layer 13, the transparent layer 14, and the light-shielding layer 15 contain the same material (PU), so that the adhesion between the design layer 13, the transparent layer 14, and the light-shielding layer 15 can be improved.

[0041] At this stage, the support film 12 is formed in a flat shape, so that the design layer 13, the transparent layer 14, and the light-shielding layer 15 can be formed by screen printing.

[0042] Next, as shown in FIG. 6, the laminated film part 10 laminated in the laminating step is shaped into a three-dimensionally curved shape (shaping step).

[0043] Specifically, in the shaping process, the laminated film part 10 is placed in a shaping device 40 and shaped. In the shaping process, the laminated film part 10 is heated to soften it, and in a state where it is easily deformed, it is pressurized to shape it, and then cooled to harden it. As a result, the laminated film part 10 takes on the final shape that will form the decorative part 2 of the vehicle.

[0044] Next, as shown in Figure 7, a laser device 50 is used to irradiate laser light from the light-shielding layer 15 side of the laminated film part 10, and a portion of the light-shielding layer 15 is removed with the laser light to form a predetermined pattern 3 on the laminated film part 10 (laser processing process).

[0045] Specifically, a focal point 51 of the laser light emitted by the laser device 50 is set to be at a position in the light-shielding layer 15 away from the transparent layer 14. The energy of the laser light is concentrated at the focal point 51, and heat is generated in each layer of the light-shielding layer 15 that contains carbon. This heat causes each layer of the light-shielding layer 15 to sublimate, and a laser-processed portion 17 in the shape of the predetermined pattern 3 is formed in a part of the light-shielding portion 16.

[0046] At this time, since the laminated film portion 10 is provided with the transparent layer 14 that does not contain carbon, the design layer 13 is protected by the transparent layer 14 and is not affected by the laser light. Therefore, it is possible to form the laser processed portion 17 by removing a part of the light-shielding layer 15 without affecting the design layer 13.

[0047] As described above, the decorative part 2 includes a light-shielding layer 15 containing carbon and a transparent layer 14 not containing carbon. The light-shielding layer 15 includes a light-shielding portion 16 that blocks light from the lighting device 30 and a laser-processed portion 17 that is formed in the light-shielding portion 16 by laser processing into a predetermined pattern 3 and allows light from the lighting device 30 to pass through. Because the carbon-free transparent layer 14 is provided, the design layer 13 is protected by the transparent layer 14, and the laser-processed portion 17 can be formed by removing a portion of the light-shielding layer 15 with laser light without affecting the design layer 13. Therefore, for example, when forming the predetermined pattern 3 on a three-dimensionally curved surface, the predetermined pattern 3 can be formed by laser processing after the decorative part 2 is shaped. This improves the positional accuracy of the predetermined pattern 3 on the decorative part 2.

[0048] Next, in order to place the laminated film unit 10 in the mold device 60, the laminated film unit 10 is turned upside down (front and back) (turning step).

[0049] Next, as shown in Figure 8, insert molding is performed using transparent resin with the laminated film portion 10 placed inside the first mold 61 on the movable side of the mold device 60 so that the light-shielding layer 15 faces the second mold 62 on the fixed side of the mold device 60 (molding process).

[0050] Specifically, with the laminated film unit 10 placed in the first die 61 of the mold device 60, colorless and transparent PC resin is filled into the mold device 60 through the gate 63. Thereafter, the first die 61 is separated from the second die 62, and the molded product is released from the second die 62 by being pushed out by an ejector pin (not shown). As a result, the substrate 20 is formed on the back surface of the light-shielding layer 15 in the laminated film unit 10.

[0051] As described above, the decorated part 2 is formed by carrying out the laminating step, shaping step, laser processing step, inverting step, and molding step.

[0052] According to the above embodiment, the following effects are achieved.

[0053] The decorative part 2 has a predetermined pattern 3 that is visible when the lighting device 30 on the back is turned on, and the predetermined pattern 3 is invisible when the lighting device 30 is turned off.The decorative part 2 has laser-processed portions 17 that transmit light from the lighting device 30 and are formed in the predetermined pattern 3, and is equipped with a light-shielding layer 15 made of a material that reacts to laser light, a transparent layer 14 that is laminated on the surface of the light-shielding layer 15 and made of a material that does not react to laser light, and a design layer 13 that is laminated on the surface of the transparent layer 14 and has a predetermined transmittance that transmits light when the lighting device 30 is turned on and makes the predetermined pattern 3 invisible when the lighting device 30 is turned off, and the design layer 13 and transparent layer 14 have substantially the same refractive index.

[0054] In addition, a manufacturing method for manufacturing a decorative part 2 in which a predetermined pattern 3 is visible when a lighting device 30 provided on the back is turned on and the predetermined pattern 3 is invisible when the lighting device 30 is turned off includes a lamination process of forming a laminated film part 10 by laminating a light-shielding layer 15 having a material that reacts to laser light and blocking the light of the lighting device 30, and a design layer 13 having a predetermined transmittance that transmits light when the lighting device 30 is turned on and makes the predetermined pattern 3 invisible when the lighting device 30 is turned off, and a transparent layer 14 made of a material that does not react to laser light and having substantially the same refractive index as the design layer 13 between them, and a laser processing process of irradiating laser light onto the laminated film part 10 from the light-shielding layer 15 side and removing a part of the light-shielding layer 15 with the laser light to form a laser-processed part 17 of the predetermined pattern 3.

[0055] In these configurations, the decorative part 2 includes a transparent layer 14 that is not reactive to laser light, between the design layer 13 and the light-shielding layer 15 that is reactive to laser light. Therefore, while the design layer 13 is protected from laser light by the transparent layer 14, it is possible to remove a portion of the light-shielding layer 15 to form a laser-processed portion 17 that transmits light from the lighting device 30. Furthermore, the design layer 13 and the transparent layer 14 have substantially the same refractive index. Therefore, when the lighting device 30 is provided on the back surface of the decorative part 2 and light is irradiated, diffuse reflection and diffusion of light at the interface between the design layer 13 and the transparent layer 14 can be prevented. Therefore, when the design layer 13 is viewed with the lighting device 30 turned on, a desirable contrast can be ensured between the area where the predetermined pattern 3 is located and the adjacent area.

[0056] Furthermore, when forming the predetermined pattern 3 in the laser processing step, a focal point 51 of the laser light emitted by the laser device 50 is set to a position in the light-shielding layer 15 away from the transparent layer 14. The energy of the laser light is concentrated at the focal point 51, and heat is generated in each layer of the light-shielding layer 15 that contains carbon. This heat causes each layer of the light-shielding layer 15 to sublimate, and a laser-processed portion 17 in the shape of the predetermined pattern 3 is formed in a part of the light-shielding portion 16.

[0057] At this time, since the laminated film portion 10 is provided with the transparent layer 14 that does not contain carbon, the design layer 13 is protected by the transparent layer 14 and is not affected by the laser light. Therefore, it is possible to form the laser processed portion 17 by removing a part of the light-shielding layer 15 without affecting the design layer 13.

[0058] Therefore, for example, when forming the predetermined pattern 3 on a three-dimensionally curved surface, it is possible to form the predetermined pattern 3 by laser processing after shaping the decorative part 2. This makes it possible to improve the positional accuracy of the predetermined pattern 3 on the decorative part 2.

[0059] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments. [Explanation of symbols]

[0060] 1. Instrument panel 2. Decorative parts 3 Predetermined Pattern 10 Laminated film section 13 Design Layer 13a Main design layer 13b Chromaticity correction layer 14 Transparent layer 15 Light blocking layer 16 Light blocking section 17 Laser processing section 30 Lighting equipment 50 Laser device 60 Mold equipment 61 Type 1 62 Type 2

Claims

1. A decorative component in which a predetermined pattern is visible when an illumination device provided on a rear surface thereof is turned on, and the predetermined pattern is invisible when the illumination device is turned off, a light-shielding layer having holes formed in the predetermined pattern for transmitting light from the lighting device and having a material that reacts to laser light; a transparent layer laminated on the surface of the light-shielding layer and made of a material that does not react to laser light; a design layer laminated on a surface of the transparent layer, the design layer having a predetermined transmittance that transmits light when the lighting device is turned on and makes the predetermined pattern invisible when the lighting device is turned off; Equipped with The design layer and the transparent layer have substantially the same refractive index. A decorative part characterized by:

2. The decorative component according to claim 1, the transparent layer is made of a colorless and transparent material, The design layer is composed of a colored translucent material obtained by adding a pigment to the colorless and transparent material. A decorative part characterized by:

3. The decorative component according to claim 1 or 2, The design layer is formed of a plurality of layers each having substantially the same refractive index as the transparent layer. A decorative part characterized by:

4. The decorative component according to any one of claims 1 to 3, The design layer, the transparent layer, and the light-shielding layer contain the same material. A decorative part characterized by:

5. A manufacturing method for manufacturing a decorative component in which a predetermined pattern is visible when an illumination device provided on a rear surface thereof is turned on, and the predetermined pattern is invisible when the illumination device is turned off, comprising: a lamination process for forming a laminated film portion by sandwiching a transparent layer made of a material that does not react to laser light and having substantially the same refractive index as the design layer between a light-shielding layer that has a material that reacts to laser light and blocks light from the lighting device and a design layer that has a predetermined transmittance that transmits light when the lighting device is turned on and makes the predetermined pattern invisible when the lighting device is turned off; a laser processing step of irradiating the laminated film portion with laser light from the light-shielding layer side and removing parts of the light-shielding layer with the laser light to form holes in the predetermined pattern, A method for manufacturing a decorative part, comprising:

6. A method for manufacturing a decorated component according to claim 5, the transparent layer is made of a colorless and transparent material, The design layer is composed of a colored translucent material obtained by adding a pigment to the colorless and transparent material. A method for manufacturing a decorative part, comprising:

7. A method for manufacturing a decorative part according to claim 5 or 6, The design layer is formed of a plurality of layers each having substantially the same refractive index as the transparent layer. A method for manufacturing a decorative part, comprising:

8. A method for manufacturing a decorated component according to any one of claims 5 to 7, The design layer, the transparent layer, and the light-shielding layer contain the same material. A method for manufacturing a decorative part, comprising:

9. A method for manufacturing a decorated component according to any one of claims 5 to 8, The method further includes a shaping step of shaping the laminated film portion laminated by the lamination step into a three-dimensionally curved shape before the laser processing step. A method for manufacturing a decorative part, comprising:

10. A method for manufacturing a decorated component according to any one of claims 5 to 9, a molding step of insert-molding the laminated film portion with a transparent resin in a state where the laminated film portion is disposed in a first mold of a mold device so that the light-shielding layer faces a second mold of the mold device, A method for manufacturing a decorative part, comprising:

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