Exterior component for vehicle

Abstract

To provide an exterior component for a vehicle, capable of changing impression of appearance between during irradiated with direct sun light and during not irradiated with the direct sun light.SOLUTION: An exterior component 1 for a vehicle comprises: a base material 2 formed from a resin; and a coating film 3 that covers a surface of the base material 2. The exterior component for a vehicle has a decorative recess 4, which is formed so as to dip toward the base material 2 from an opposite surface 3a with respect to the base material 2, of the coating film 3, and which has a bottom section 4a formed to be an uneven surface.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an exterior part for a vehicle. [Background technology]

[0002] Various exterior parts (vehicle exterior parts) are attached to vehicles. These vehicle exterior parts are visible from outside the vehicle and have a significant impact on the formation of the external impression of the vehicle. For example, Patent Document 1 discloses a front grille provided on a vehicle. The front grille disclosed in Patent Document 1 is provided on the front side of the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-81034 A Summary of the Invention [Problem to be solved by the invention]

[0004] Vehicle exterior parts, including the front grille disclosed in Patent Document 1, are attached to positions visible from the outside and are exposed to direct sunlight during the day. On the other hand, vehicle exterior parts are not exposed to direct sunlight at night, etc. For such vehicle exterior parts, it is sometimes desirable to be able to significantly change the appearance impression between when the part is exposed to direct sunlight and when it is not exposed to direct sunlight.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide an exterior part for a vehicle that can significantly change the appearance impression when exposed to direct sunlight and when not exposed to direct sunlight. [Means for solving the problem]

[0006] The present invention employs the following configuration as a means for solving the above problems.

[0007] A first aspect of the present invention is an exterior vehicle part comprising a substrate made of resin and a coating film covering a surface of the substrate, the exterior vehicle part having a decorative recess formed on a surface of the coating film opposite the substrate so as to be recessed toward the substrate and having an uneven bottom.

[0008] A second aspect of the present invention is based on the first aspect and adopts a configuration in which the depth dimension of the decorative recess is smaller than the thickness dimension of the coating film, and the bottom of the decorative recess consists of a part of the coating film.

[0009] A third aspect of the present invention is based on the first aspect and adopts a configuration in which the decorative recess has a depth dimension that exposes the surface of the base material, and the bottom of the decorative recess consists of a part of the base material.

[0010] A fourth aspect of the present invention is the device of the third aspect, in which the base material is transparent. Effect of the Invention

[0011] According to the present invention, the decorative recess is formed so as to be recessed from the surface of the coating film opposite to the substrate. In addition, the bottom of the decorative recess is an uneven surface. When sunlight is irradiated to such an exterior part for a vehicle, the sunlight is scattered or diffracted by the uneven surface provided at the bottom of the decorative recess. For example, during the day, such scattered or diffracted light is visible to those outside the vehicle. On the other hand, when sunlight is not irradiated to the exterior part for a vehicle, only light with a lower intensity than sunlight is irradiated to the exterior part for a vehicle. Therefore, the intensity of the light scattered or diffracted by the uneven surface provided at the bottom of the decorative recess is weak, and the scattered or diffracted light is difficult to be visible to those outside the vehicle. As a result, according to the present invention, the exterior part for a vehicle can have a significantly different appearance impression between when it is irradiated with direct sunlight and when it is not irradiated with direct sunlight. [Brief description of the drawings]

[0012] [Figure 1] 1 is a schematic front view of a vehicle exterior part according to a first embodiment of the present invention. [Diagram 2] 1 is a schematic cross-sectional view of a vehicle exterior part according to a first embodiment of the present invention. [Diagram 3] FIG. 4 is a schematic cross-sectional view of a vehicle exterior part according to a second embodiment of the present invention. [Figure 4] FIG. 11 is a schematic cross-sectional view of a vehicle exterior part according to a third embodiment of the present invention. [Diagram 5] FIG. 11 is a schematic front view of a vehicle exterior part according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vehicle exterior part according to the present invention will be described with reference to the drawings.

[0014] (First embodiment) Fig. 1 is a schematic front view of the vehicle exterior part of this embodiment. Fig. 2 is a schematic cross-sectional view of the vehicle exterior part of this embodiment, which corresponds to the cross-sectional view taken along line AA in Fig. 1. The vehicle exterior part 1 of this embodiment is a part that is installed on a vehicle, and is disposed at a position that is visible from outside the vehicle.

[0015] For example, as shown in Fig. 2, a vehicle exterior part 1 of this embodiment has a substrate 2 and a coating film 3. In this embodiment, the substrate 2 is formed in a plate shape. The substrate 2 is arranged so that one surface (hereinafter referred to as the outer surface 2a) faces the outside of the vehicle, and the other surface (hereinafter referred to as the inner surface 2b) faces the inside of the vehicle. The shape of the substrate 2 is not limited to a plate shape.

[0016] Moreover, the substrate 2 is formed of a resin. Moreover, in this embodiment, the substrate 2 is transparent. That is, in this embodiment, the substrate 2 is formed of a transparent resin material. For example, the substrate 2 can be formed of a polycarbonate resin or an acrylic resin. For example, the substrate 2 is colorless and transparent. However, the substrate 2 does not necessarily have to be colorless and transparent, and may be colored and transparent. Moreover, the substrate 2 may be formed of a non-transparent resin material.

[0017] The coating film 3 is a film formed by drying paint, and is formed so as to cover the surface (outer surface 2a) of the substrate 2. For example, the coating film 3 is black. The decorative recesses 4 described below are formed, for example, by laser processing. The coating film 3 being black makes it easier for the coating film 3 to absorb laser light, which makes it easier to form the decorative recesses 4 by laser processing. In addition, in consideration of such laser processing, it is preferable that the coating film 3 is hard and has high adhesion to the substrate 2. The thickness dimension of such a coating film 3 is, for example, several tens of μm.

[0018] As shown in FIG. 1, the vehicle exterior part 1 of this embodiment has a decorative recess 4. As shown in FIG. 2, the decorative recess 4 is a recess formed so as to be recessed from the surface of the coating film 3 opposite the substrate 2 (opposite surface 3a) toward the substrate 2. As shown in FIG. 1, the vehicle exterior part 1 of this embodiment has a plurality of triangular decorative recesses 4. However, the number of decorative recesses 4 can be changed. For example, the vehicle exterior part 1 may be provided with a single decorative recess 4. In addition, the shape of the decorative recess 4 can be changed. For example, the vehicle exterior part 1 may be a polygonal shape with four or more corners.

[0019] In this embodiment, the decorative recess 4 is formed by cutting away a portion of the coating film 3 so as to expose the outer surface 2a of the substrate 2. That is, in this embodiment, an opening 3b is formed in a portion of the coating film 3 in order to form the decorative recess 4. Furthermore, the bottom 4a of the decorative recess 4 is formed by the outer surface 2a of the substrate 2 exposed by the opening 3b. That is, in this embodiment, the decorative recess 4 has a depth dimension that exposes the outer surface 2a of the substrate 2. Furthermore, the bottom 4a of the decorative recess 4 is made of a portion of the substrate 2.

[0020] As shown in FIG. 2, a large number of minute grooves 4b are formed in the bottom 4a of the decorative recess 4. Each groove 4b is formed so as to extend linearly. By forming such a plurality of grooves 4b, the bottom 4a of the decorative recess 4 has an uneven surface. In this embodiment, the bottom 4a of the decorative recess 4 is formed on the outer surface 2a of the base material 2 as described above. Therefore, the grooves 4b are formed by slightly scraping the outer surface 2a of the base material 2. The depth dimension of such grooves 4b is extremely small compared to the depth dimension of the decorative recess 4, and is, for example, one-tenth or less of the depth dimension of the decorative recess 4.

[0021] As shown in FIG. 1, the bottom 4a of the decorative recess 4 has three regions. In each region, a plurality of grooves 4b formed therein are arranged so as to be parallel to each other. This region is called a parallel groove forming region R. As shown in FIG. 1, one of the three parallel groove forming regions R is called a first parallel groove forming region R1. Also, one of the two parallel groove forming regions R excluding the first parallel groove forming region R1 is called a second parallel groove forming region R2. Also, the remaining parallel groove forming region R excluding the first parallel groove forming region R1 and the second parallel groove forming region R2 is called a third parallel groove forming region R3.

[0022] The first parallel groove forming region R1 is a triangular region including one side 4c of the triangular decorative recess 4. The second parallel groove forming region R2 is a triangular region including one side 4d of the triangular decorative recess 4. The third parallel groove forming region R3 is a triangular region including one side 4e of the triangular decorative recess 4. The first parallel groove forming region R1, the second parallel groove forming region R2, and the third parallel groove forming region R3 are formed so that their vertices intersect at the center of the decorative recess 4. However, the shapes of the first parallel groove forming region R1, the second parallel groove forming region R2, and the third parallel groove forming region R3 can be changed.

[0023] In the first parallel groove forming region R1, each groove 4b extends along the arrow shown in the first parallel groove forming region R1 in FIG. 1 so as to be parallel to one side 4c. That is, the grooves 4b formed in the first parallel groove forming region R1 are arranged so as to be parallel to one side 4c. In the second parallel groove forming region R2, each groove 4b extends along the arrow shown in the second parallel groove forming region R2 in FIG. 1 so as to be parallel to one side 4d. That is, the grooves 4b formed in the second parallel groove forming region R2 are arranged so as to be parallel to one side 4d. In the third parallel groove forming region R3, each groove 4b extends along the arrow shown in the third parallel groove forming region R3 in FIG. 1 so as to be parallel to one side 4e. That is, the grooves 4b formed in the third parallel groove forming region R3 are arranged so as to be parallel to one side 4e. In addition, in FIG. 1, the arrows shown in the first parallel groove forming region R1, the arrows shown in the second parallel groove forming region R2, and the arrows shown in the third parallel groove forming region R3 are shown for the purpose of explanation and are not provided on an actual vehicle exterior component.

[0024] The grooves 4b provided in the first parallel groove forming region R1, the grooves 4b provided in the second parallel groove forming region R2, and the grooves 4b provided in the third parallel groove forming region R3 each extend linearly in a different direction. That is, the bottom 4a of the decorative recess 4 is provided with a plurality of parallel groove forming regions R in which the grooves 4b extend in different directions.

[0025] Moreover, the first parallel groove forming region R1, the second parallel groove forming region R2, and the third parallel groove forming region R3 are disposed adjacent to one another. That is, the first parallel groove forming region R1 is disposed adjacent to the second parallel groove forming region R2 and the third parallel groove forming region R3. Moreover, the second parallel groove forming region R2 is disposed adjacent to the first parallel groove forming region R1 and the third parallel groove forming region R3. The third parallel groove forming region R3 is disposed adjacent to the first parallel groove forming region R1 and the second parallel groove forming region R2.

[0026] As shown in Fig. 1, the boundary line L1 between the first parallel groove forming region R1 and the second parallel groove forming region R2, the boundary line L2 between the second parallel groove forming region R2 and the third parallel groove forming region R3, and the boundary line L3 between the second parallel groove forming region R2 and the third parallel groove forming region R3 are each linear. That is, in this embodiment, a plurality of parallel groove forming regions R having grooves 4b extending in different directions are adjacently disposed so that the boundary lines are linear. These boundary lines L1, L2, and L3 are connected at one point in the decorative recess 4.

[0027] In the vehicle exterior part 1 of this embodiment, the first parallel groove forming region R1 and the second parallel groove forming region R2 have different extension directions of the groove portion 4b, so that the light reflection state is different. Therefore, an outsider visually recognizes the first parallel groove forming region R1 and the second parallel groove forming region R2 as having different textures, and as a result, the boundary line L1 is visible. Similarly, the boundary line L2 and the boundary line L3 are also visible from the outside. For example, such boundary lines L1, L2, and L3 are visually recognized as the ridge lines of a triangle formed by the decorative recess 4, and the decorative recess 4 is visually recognized three-dimensionally by an outsider.

[0028] Such decorative recesses 4 can be formed by laser processing. For example, first, the coating film 3 is formed on the entire outer surface 2a of the base material 2. Next, the coating film 3 is irradiated with laser light to locally remove the coating film 3. At this time, the output of the laser light is adjusted to remove the coating film 3 over the entire area in the thickness direction and to slightly scrape the outer surface 2a of the base material 2. The grooves 4b can be formed by the laser light slightly scraping the outer surface 2a of the base material 2.

[0029] Moreover, in each parallel groove formation region R, the laser light is scanned in parallel so that the grooves 4b are parallel in one parallel groove formation region R. Specifically, in the first parallel groove formation region R1, the laser light is scanned in the direction of the arrow shown in the first parallel groove formation region R1 in Fig. 1 to form each groove 4b. Similarly, in the second parallel groove formation region R2 and the third parallel groove formation region R3, the laser light is scanned in the direction of the arrow shown in each parallel groove formation region R in Fig. 1 to form the grooves 4b.

[0030] The vehicle exterior part 1 of this embodiment as described above includes a substrate 2 and a coating film 3. The substrate 2 is made of resin. The coating film 3 covers the surface of the substrate 2. The vehicle exterior part 1 of this embodiment also has a decorative recess 4. The decorative recess 4 is formed so as to be recessed toward the substrate 2 from a surface 3a of the coating film 3 opposite the substrate 2. The decorative recess 4 has a bottom 4a that is an uneven surface.

[0031] According to the vehicle exterior part 1 of this embodiment, the decorative recess 4 is formed so as to be recessed from the surface 3a opposite to the substrate 2 of the coating film 3. In addition, the bottom 4a of the decorative recess 4 is an uneven surface. When sunlight is irradiated to such a vehicle exterior part 1, the sunlight is scattered or diffracted by the uneven surface provided on the bottom 4a of the decorative recess 4. For example, during the day, such scattered or diffracted light is visible to people outside the vehicle. On the other hand, when sunlight is not irradiated to the vehicle exterior part 1, only light with a lower intensity than sunlight is irradiated to the vehicle exterior part 1. Therefore, the intensity of the light scattered or diffracted by the uneven surface provided on the bottom 4a of the decorative recess 4 is weak, and the scattered or diffracted light is difficult to be visible to people outside the vehicle. As a result, according to the vehicle exterior part 1 of this embodiment, it is possible to greatly change the appearance impression while direct sunlight is irradiated and the appearance impression while direct sunlight is not irradiated.

[0032] Moreover, in the vehicle exterior part 1 of this embodiment, the decorative recess 4 has a depth dimension that exposes the surface of the base material 2. Moreover, the bottom 4a of the decorative recess 4 is made of a part of the base material 2. According to such a vehicle exterior part 1 of this embodiment, the base material 2 can be visually recognized by an outsider.

[0033] Moreover, in the vehicle exterior part 1 of this embodiment, the base material 2 is transparent. According to such a vehicle exterior part 1 of this embodiment, an outsider can visually recognize the inside of the base material 2 or the space beyond the base material 2. Therefore, it becomes possible for an outsider to visually recognize the decorative recess 4 three-dimensionally.

[0034] In the vehicle exterior part 1 of this embodiment, an uneven surface is formed by a plurality of grooves 4b provided in the bottom 4a of the decorative recess 4. In addition, the bottom 4a of the decorative recess 4 is provided with a parallel groove forming region R in which a plurality of linear grooves 4b are arranged in parallel to each other.

[0035] According to the vehicle exterior part 1 of the present embodiment, the multiple groove portions 4b are arranged in parallel in the parallel groove forming region R. Therefore, an outsider can visually recognize one parallel groove forming region R as having the same texture.

[0036] In the vehicle exterior part 1 of this embodiment, the bottom 4a of the decorative recess 4 is provided with a plurality of parallel groove forming regions R in which the grooves 4b extend in different directions. According to the vehicle exterior part 1 of this embodiment, the parallel groove forming regions R in which the grooves 4b extend in different directions are provided in one bottom 4a. Therefore, an outsider can visually recognize one bottom 4a as being divided into a plurality of regions.

[0037] In addition, in the vehicle exterior part 1 of this embodiment, a plurality of parallel groove formation regions R in which the extension directions of the groove portions 4b are different from one another are adjacently arranged so that their boundaries (boundary line L1, boundary line L2, and boundary line L3) are linear.

[0038] According to the vehicle exterior part 1 of this embodiment, an outsider can visually recognize a linear boundary line inside one decorating recess 4. For this reason, for example, by arranging the boundary line like a ridge line of a three-dimensional object, an outsider can visually recognize the decorating recess 4 three-dimensionally.

[0039] In this embodiment, the decorative recess 4 has a depth dimension that exposes the surface of the base material 2. However, the present invention is not limited to this. For example, the depth dimension of the decorative recess 4 may be smaller than the thickness dimension of the coating film 3. In this case, the bottom 4a of the decorative recess 4 is made of a part of the coating film 3.

[0040] Second embodiment Next, a second embodiment of the present invention will be described. In the description of this embodiment, the description of the same parts as those in the first embodiment will be omitted or simplified.

[0041] 3 is a schematic cross-sectional view of a vehicle exterior part 1A of this embodiment. As shown in this figure, the vehicle exterior part 1A of this embodiment includes a reflective film 5 and a protective film 6. As shown in this figure, the reflective film 5 and the protective film 6 are laminated on the inner surface 2b of the base material 2.

[0042] The reflective film 5 is provided so as to cover the inner surface 2b of the substrate 2. That is, in this embodiment, the coating film 3 is formed so as to cover the outer surface 2a which is one surface of the substrate 2, and the reflective film 5 is formed so as to cover the inner surface 2b which is the other surface of the substrate 2. The reflective film 5 is, for example, a metal film formed by deposition or the like. However, the reflective film 5 may be a mirror surface or a scattering surface.

[0043] Such a reflective film 5 reflects light incident on the base material 2 from the outside through the decorative recess 4. For example, the back surface of the coating film 3 is reflected on the reflective film 5 and is seen as a shadow by an outsider. As a result, an outsider can see the decorative recess 4 in a more three-dimensional manner.

[0044] The protective film 6 is a coating film formed so as to cover the reflective film 5 from the side opposite to the substrate 2. Such a protective film 6 can prevent the reflective film 5 from deteriorating. However, in this embodiment, the reflective film 5 is not exposed to the outside of the vehicle. Therefore, if the deterioration of the reflective film 5 progresses slowly, the protective film 6 does not need to be provided.

[0045] In the vehicle exterior part 1A of this embodiment as described above, the base material 2 is formed in a plate shape. The coating film 3 is formed so as to cover one side of the base material 2, and the reflective film 5 is formed so as to cover the other side of the base material 2. According to the vehicle exterior part 1A of this embodiment, the light incident on the base material 2 from the decorative recess 4 can be reflected by the reflective film 5. Therefore, the decorative recess 4 can be visually recognized more three-dimensionally by an outsider.

[0046] Third embodiment Next, a third embodiment of the present invention will be described with reference to Fig. 4. In the description of this embodiment, the description of the same parts as those in the first embodiment will be omitted or simplified.

[0047] 4 is a schematic cross-sectional view of a vehicle exterior part 1B of this embodiment. As shown in this figure, the vehicle exterior part 1B of this embodiment includes a metal film 7 and an outer protective film 8 (protective film). As shown in this figure, the metal film 7 and the outer protective film 8 are laminated on the outer surface 2a of the base material 2.

[0048] The metal film 7 is a metal film that covers the coating film 3 from the side opposite to the substrate 2. The metal film 7 is formed by, for example, vapor deposition. Such a metal film 7 imparts metallic luster to the vehicle exterior part 1B. In other words, the vehicle exterior part 1B of this embodiment is visually recognized by an outsider as if it were made of metal.

[0049] 4, the metal film 7 is formed so as to cover the entirety of the decorative recess 4. Such a metal film 7 is formed to follow the shape of the decorative recess 4, and therefore forms a metallic recess 7a that is recessed similarly to the decorative recess 4. In addition, a groove 7c similar to the groove 4b of the decorative recess 4 is formed in the bottom 7b of the metallic recess 7a.

[0050] According to such a metal film 7, the metallic recesses 7a can be visually recognized three-dimensionally by outsiders. Also, since the parallel groove forming region R is formed in the metal film 7, like the bottom 4a of the decorative recess 4, the metallic recesses 7a can be visually recognized more three-dimensionally by outsiders.

[0051] The outer protective film 8 is a transparent coating film formed so as to cover the metal film 7 from the side opposite to the substrate 2. Such an outer protective film 8 can prevent deterioration of the metal film 7. However, in this embodiment, if the weather resistance of the metal film 7 is high and the deterioration progresses slowly, the outer protective film 8 does not need to be provided.

[0052] The vehicle exterior part 1B of this embodiment as described above has a metal film 7. The metal film 7 covers the coating film 3 from the side opposite to the substrate 2. The metal film 7 is formed so as to cover the entirety of the decorative recess 4. According to such vehicle exterior part 1B of this embodiment, a three-dimensional structure can be visually recognized for a part of the vehicle exterior part 1B having metallic luster.

[0053] Moreover, the vehicle exterior part 1B of this embodiment has a transparent outer protective film 8 that covers the metal film 7 from the side opposite to the base material 2. According to such vehicle exterior part 1B of this embodiment, the outer protective film 8 can suppress deterioration of the metal film 7.

[0054] In this embodiment, the base material 2 cannot be seen due to the metal film 7. Therefore, the base material 2 does not need to be transparent. In other words, the base material 2 may be made of a colored resin.

[0055] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described with reference to Fig. 5. In the description of this embodiment, the description of the same parts as those in the first embodiment will be omitted or simplified.

[0056] FIG. 5 is a schematic front view of a vehicle exterior part 1C of this embodiment. The vehicle exterior part 1C of this embodiment has a decorative recess 9. The decorative recess 9 is a recess formed so as to be recessed toward the substrate 2 from the surface (opposite surface 3a) of the coating film 3 opposite the substrate 2. As shown in FIG. 5, it is formed in a rectangular shape when viewed from the direction along the thickness of the substrate 2. However, the number of decorative recesses 9 can be changed. For example, the vehicle exterior part 1C may have a plurality of decorative recesses 9. In addition, the shape of the decorative recess 9 can be changed. For example, the vehicle exterior part 1C may be a triangular shape or a polygonal shape having five or more angles.

[0057] In this embodiment, the decorative recess 9 is formed by recessing a part of the coating film 3 to such an extent that the outer surface 2a of the substrate 2 is not exposed. That is, in this embodiment, a bottomed recess is formed in a part of the coating film 3 to form the decorative recess 9. The bottom 9a of such a decorative recess 9 is formed by a part of the coating film 3. That is, in this embodiment, the decorative recess 9 has a depth dimension smaller than the thickness dimension of the coating film 3.

[0058] As shown in FIG. 5, a large number of minute grooves 9b are formed in the bottom 9a of the decorative recess 9. Each groove 9b is formed to extend linearly. By forming such a plurality of grooves 9b, the bottom 9a of the decorative recess 9 has an uneven surface. In this embodiment, the bottom 9a of the decorative recess 9 is formed of the coating film 3 as described above. Therefore, the grooves 9b are formed by slightly scraping the bottom 9a of the coating film 3. The depth dimension of such grooves 9b is extremely small compared to the depth dimension of the decorative recess 9, and is, for example, less than one tenth of the depth dimension of the decorative recess 9.

[0059] As shown in Fig. 5, two parallel groove forming regions R are provided on the bottom 9a of the decorative recess 9. As shown in Fig. 5, one of the two parallel groove forming regions R is referred to as a fourth parallel groove forming region R4. Moreover, the remaining parallel groove forming region R excluding the fourth parallel groove forming region R4 is referred to as a fifth parallel groove forming region R5.

[0060] The fourth parallel groove forming region R4 occupies half (the left half in FIG. 5) of the rectangular decorative recess 9. The fifth parallel groove forming region R5 is a triangular region occupying the remaining half (the right half in FIG. 5) of the decorative recess 9. However, the shapes of the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5 can be changed.

[0061] In the fourth parallel groove forming region R4, each groove 9b extends along the arrow shown in the fourth parallel groove forming region R4 in FIG. 5 so as to be parallel to the arrangement direction of the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5. That is, the grooves 9b formed in the fourth parallel groove forming region R4 are arranged so as to be parallel to each other. In the fifth parallel groove forming region R5, each groove 9b extends along the arrow shown in the fifth parallel groove forming region R5 in FIG. 5 so as to be parallel to the arrangement direction of the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5. That is, the grooves 9b formed in the fifth parallel groove forming region R5 are arranged so as to be parallel to each other.

[0062] The grooves 9b provided in the fourth parallel groove forming region R4 and the grooves 9b provided in the fifth parallel groove forming region R5 extend linearly in the same direction (the arrangement direction of the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5). In other words, the bottom 9a of the decorative recess 9 is provided with a plurality of parallel groove forming regions R in which the grooves 9b extend in the same direction.

[0063] However, the arrangement interval of the grooves 9b is different between the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5. Specifically, the arrangement interval of the grooves 9b in the fourth parallel groove forming region R4 is shorter than the arrangement interval of the grooves 9b in the fifth parallel groove forming region R5. In other words, the grooves 9b are densely arranged in the fourth parallel groove forming region R4 and sparsely arranged in the fifth parallel groove forming region R5.

[0064] The fourth parallel groove forming region R4 and the fifth parallel groove forming region R5 are disposed adjacent to each other. In this embodiment, the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5 are disposed adjacent to each other so that their ends in the extension direction of the groove portion 9b (the arrangement direction of the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5) are connected to each other. As shown in FIG. 5, the boundary line L4 between the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5 is a straight line.

[0065] In the vehicle exterior part 1C of this embodiment, the arrangement intervals of the grooves 9b are different between the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5, so that the light reflection is different. Therefore, an outsider visually recognizes that the fourth parallel groove forming region R4 and the fifth parallel groove forming region R5 have different textures, and as a result, the boundary line L4 is visible. For example, such a boundary line L4 allows an outsider to visually recognize the decorative recess 9 in a three-dimensional manner.

[0066] Such decorative recesses 9 can be formed by laser processing. For example, first, the coating film 3 is formed on the entire outer surface 2a of the substrate 2. Next, the coating film 3 is irradiated with laser light to locally recess the coating film 3. At this time, the output of the laser light is adjusted to an output that does not remove the coating film 3 over the entire thickness direction, but slightly scrapes the bottom 9a. The laser light scrapes the bottom 9a slightly to form the grooves 9b.

[0067] Moreover, in each parallel groove formation region R, the laser light is scanned in parallel so that the grooves 9b are parallel in one parallel groove formation region R. Specifically, in the fourth parallel groove formation region R4, the laser light is scanned in the direction of the arrow shown in the fourth parallel groove formation region R4 in Fig. 5 to form each groove 9b. Similarly, in the fifth parallel groove formation region R5, the laser light is scanned in the direction of the arrow shown in each parallel groove formation region R in Fig. 5 to form the grooves 9b.

[0068] In the vehicle exterior part 1C of this embodiment as described above, the depth dimension of the decorative recess 4 is smaller than the thickness dimension of the coating film 3. In addition, the bottom 4a of the decorative recess 4 is made of a part of the coating film 3. According to the vehicle exterior part 1C of this embodiment, the base material 2 can be prevented from being visible to outsiders. Therefore, the freedom of selection of the material for forming the base material 2 is improved. In other words, in this embodiment, the base material 2 does not need to be transparent.

[0069] In the vehicle exterior part 1C of this embodiment, a plurality of parallel groove formation regions R in which the groove portions 4b extend in the same direction but are arranged at different intervals are provided on the bottom 4a of the decorative recess 4. According to the vehicle exterior part 1 of this embodiment, the light reflection directions in the plurality of parallel groove formation regions R can be made similar, and the textures of the plurality of parallel groove formation regions R can be made similar.

[0070] In the vehicle exterior part 1 of this embodiment, the parallel groove formation regions R, each having the same extension direction of the grooves 4b but different arrangement intervals of the grooves 4b, are adjacently arranged so that their ends in the extension direction of the grooves 4b are connected to each other. This gives an outsider the impression that the shapes visually recognized in the different parallel groove formation regions R are connected to each other.

[0071] Although the preferred embodiment of the present invention has been described above with reference to the attached drawings, it goes without saying that the present invention is not limited to the above embodiment. The shapes and combinations of the components shown in the above embodiment are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention.

[0072] For example, in the above embodiment, the vehicle exterior part is described as being rectangular and plate-shaped. However, the present invention is not limited to this. For example, the vehicle exterior part does not have to be plate-shaped. Also, for example, the vehicle exterior part may have a base provided with an attachment portion or the like for a vehicle body.

[0073] For example, in the above embodiment, a configuration has been described in which the grooves are formed at the same time as forming the coating film 3 by laser processing. However, the present invention is not limited to this. For example, the step of forming the grooves may be performed after processing the coating film 3.

[0074] Furthermore, the present invention can employ the configurations described in the following supplementary notes.

[0075] (Appendix 1) A base material made of resin; A coating film covering a surface of the substrate; An exterior part for a vehicle comprising: A decorative recess is formed on the surface of the coating film opposite to the substrate so as to be recessed toward the substrate, and the bottom portion of the decorative recess is made of an uneven surface. 1. A vehicle exterior part comprising:

[0076] (Appendix 2) The depth dimension of the decorative recess is smaller than the thickness dimension of the coating film, The bottom of the decorative recess is made of a part of the coating film. 2. A vehicle exterior part according to claim 1.

[0077] (Appendix 3) The decorative recess has a depth dimension that exposes the surface of the base material, The bottom of the decorative recess is made of a part of the base material. 2. A vehicle exterior part according to claim 1.

[0078] (Appendix 4) 4. The vehicle exterior part according to claim 3, wherein the base material is transparent.

[0079] (Appendix 5) The substrate is formed in a plate shape, The coating film is formed so as to cover one side of the substrate, A reflective film is formed so as to cover the other surface of the base material. 5. A vehicle exterior part according to claim 4.

[0080] (Appendix 6) The uneven surface is formed by a plurality of grooves provided in the bottom of the decorative recess, A parallel groove forming area is provided at the bottom of the decorative recess, in which a plurality of linear grooves are arranged in parallel to each other. 6. An exterior part for a vehicle according to any one of claims 1 to 5.

[0081] (Appendix 7) 7. The vehicle exterior part according to claim 6, wherein a plurality of parallel groove forming areas are provided at a bottom of the decorative recess, the grooves extending in different directions.

[0082] (Appendix 8) 8. An exterior part for a vehicle according to claim 7, wherein a plurality of the parallel groove formation regions, each having a groove portion extending in a different direction from the others, are adjacently arranged so that their boundary lines are linear.

[0083] (Appendix 9) The vehicle exterior part according to any one of claims 6 to 8, characterized in that a plurality of parallel groove formation areas are provided at the bottom of the decorative recess, in which the groove portions extend in the same direction and are arranged at different intervals.

[0084] (Appendix 10) 10. The vehicle exterior part according to claim 9, wherein the parallel groove formation regions, each having the same extension direction of the groove portions and different arrangement intervals of the groove portions, are adjacently arranged so that their ends in the extension direction of the groove portions are connected to each other.

[0085] (Appendix 11) A metal film is provided covering the coating film from the side opposite to the substrate, The metal film is formed so as to cover the entirety of the decorative recess. 11. The vehicle exterior part according to any one of claims 1 to 10.

[0086] (Appendix 12) 12. The vehicle exterior part according to claim 11, further comprising a transparent protective film covering the metal film from the side opposite the substrate. [Explanation of symbols]

[0087] 1...Exterior part for vehicle, 1A...Exterior part for vehicle, 1B...Exterior part for vehicle, 1C...Exterior part for vehicle, 2...Substrate, 2a...Outer surface (surface on one side), 2b...Inner surface (surface on the other side), 3...Coating film, 3a...Opposite surface, 3b...Opening, 4...Decorative recess, 4a...Bottom, 4b...Groove, 5...Reflective film, 6...Protective film, 7...Metal film, 7a...Metallic recess, 7b...Bottom, 7c...Groove, 8...Outer protective film (protective film), 9...Decorative recess, 9a...Bottom, 9b...Groove, L1...Boundary line, L2...Boundary line, L3...Boundary line, L4...Boundary line, R...Parallel groove forming area

Claims

1. A base material made of resin; A coating film covering a surface of the substrate; An exterior part for a vehicle comprising: A decorative recess is formed in the coating film and has a bottom with an uneven surface.

1. A vehicle exterior part comprising:

2. The depth dimension of the decorative recess is smaller than the thickness dimension of the coating film, The bottom of the decorative recess is made of a part of the coating film.

2. The vehicle exterior part according to claim 1.

3. The decorative recess has a depth dimension that exposes the surface of the base material, The bottom of the decorative recess is made of a part of the base material.

2. The vehicle exterior part according to claim 1.

4. 4. The exterior part for a vehicle according to claim 3, wherein the base material is transparent.

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