Dial for watch, and watch

Abstract

To provide a dial for a watch, and a watch.SOLUTION: A dial for a watch 3 is formed with surface decorations having a plurality of protrusions 32 on a first principal surface. On a first cross section orthogonal to a first direction X of at least one protrusion 32, the inclination angle α of a first slope 32a increasing its height toward a peak P5, and the inclination angle β of a second slope 32b decreasing its height from the peak P5, are different from each other. On the first cross section, two or more of the plurality of protrusions 32 are different in height from each other. Two or more protrusions 32 are present on a second cross section orthogonal to a second direction Y orthogonal to the first direction X along the first principal surface.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a timepiece dial and a timepiece. [Background technology]

[0002] 2. Description of the Related Art On the surface of a timepiece dial, indexes indicating the time, etc. are formed. The indexes are formed in a convex shape on the surface of the dial (see, for example, Patent Document 1 and Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-33568 A [Patent Document 2] Japanese Patent Application Publication No. 2-189493 Summary of the Invention [Problem to be solved by the invention]

[0004] In addition to the indexes, the dial may be provided with a surface decoration with unevenness to enhance the design. However, the height of the unevenness may be restricted by the dimensions of the exterior case, which are determined by the thickness of the product, and by manufacturing reasons. Therefore, it is not easy to enhance the decorativeness of the surface decoration with large unevenness on the dial.

[0005] An object of one aspect of the present invention is to provide a timepiece dial and a timepiece that can enhance the decorativeness of the surface decoration. [Means for solving the problem]

[0006] (1) A timepiece dial having a surface decoration having a plurality of convex portions formed on a first main surface, at least one of the convex portions has a different inclination angle between a first sloping surface that increases in height toward an apex and a second sloping surface that decreases in height from the apex in a first cross section perpendicular to a first direction along the first main surface, at least two of the plurality of convex portions have different heights in the first cross section, and there are two or more convex portions in a second cross section perpendicular to a second direction along the first main surface that is perpendicular to the first direction.

[0007] According to this configuration, since the inclination angles of the first inclined surface and the second inclined surface are different, it is possible to design one of the two inclined surfaces so that light is more likely to strike it and the other inclined surface so that light is less likely to strike it. Since the brightness of the two inclined surfaces can be set arbitrarily, the contrast between the brightness of the two inclined surfaces can be increased. Therefore, the surface decoration can be given a deep and luxurious appearance. Furthermore, since the range of brightness that can be set for the two inclined surfaces is increased, the freedom of design of the dial can be increased. Thus, a dial with a highly decorative surface decoration can be realized.

[0008] According to this configuration, since the heights of two or more protrusions are different, it is possible to mix protrusions with a large area on which light hits and protrusions with a small area on which light hits. This gives the surface decoration an appearance that is not monotonous but has depth. Furthermore, since the heights of the protrusions are not uniform, it is possible to achieve a variety of expressions. This increases the freedom of design of the dial. This makes it possible to realize a dial with a surface decoration that has excellent decorativeness.

[0009] According to this configuration, since there are two or more protrusions not only on the first cross section but also on the second cross section, the protrusions constituting the surface decoration are formed at diversified positions in a plurality of directions. This allows the surface decoration to have a non-monotonous, high-class appearance. This allows for the realization of a dial with a highly decorative surface decoration.

[0010] (2) The timepiece dial according to (1), wherein the distance between the apexes of the convex portions adjacent to each other in the first direction is different from the distance between the apexes of the convex portions adjacent to each other in the second direction.

[0011] According to this configuration, in the direction where the vertex distance is large, even if the direction of the light hitting the dial changes, the visibility of the part of the convex part where the light hits is not likely to change. Therefore, the influence of the surface decoration on the visibility of the index can be kept small. Therefore, even if the decoration with unevenness is formed on the dial to enhance the decorativeness, the visibility of the index is good.

[0012] (3) The timepiece dial according to (1) or (2), wherein the convex portion has at least a portion of a curved ridgeline in a plan view.

[0013] According to this configuration, since at least a portion of the ridge of the protruding portion is curved, it is possible to give the surface decoration an appearance that is not monotonous but has a sense of luxury.

[0014] (4) The timepiece dial according to any one of (1) to (3), wherein the first main surface is covered with a transparent resin layer.

[0015] This configuration allows the surface decoration to have a three-dimensional, deep visual effect.

[0016] (5) A watch having a watch dial according to any one of (1) to (4).

[0017] This configuration makes it possible to realize a timepiece equipped with a dial that features highly decorative surface decoration. Effect of the Invention

[0018] According to one aspect of the present invention, it is possible to provide a timepiece dial and a timepiece that can enhance the decorativeness of the surface decoration. [Brief description of the drawings]

[0019] [Figure 1]1 is a cross-sectional view of a timepiece having a timepiece dial according to a first embodiment. [Diagram 2] FIG. 2 is a plan view of the timepiece dial according to the first embodiment. [Diagram 3] FIG. 2 is a cross-sectional view of the previous figure. [Figure 4] FIG. 2 is a perspective view of a part of a cross-section of the timepiece dial according to the first embodiment. [Diagram 5] FIG. 2 is a plan view of a partial area of ​​the timepiece dial according to the first embodiment. [Figure 6] FIG. 2 is a diagram showing the height distribution in the cross section II-II of the previous figure. [Figure 7] FIG. 6 is an enlarged plan view of a region A in FIG. 5. [Figure 8] FIG. 3 is a diagram showing the height distribution in the cross section III-III of the previous figure. [Figure 9] FIG. 2 is a plan view of a partial area of ​​the timepiece dial according to the first embodiment. [Figure 10] FIG. 4 is a diagram showing the height distribution in the IV-IV cross section of the previous figure. [Figure 11] FIG. 2 is a plan view of a partial area of ​​the timepiece dial according to the first embodiment. [Figure 12] FIG. 13 shows the height distribution in the VV cross section of the previous figure. [Figure 13] 2A and 2B are a plan view and a height distribution diagram of a partial area of ​​the timepiece dial according to the first embodiment. [Figure 14] FIG. 11 is a cross-sectional view of a timepiece dial according to a second embodiment. [Figure 15] FIG. 11 is a schematic diagram illustrating the reflection of light on a timepiece dial according to a second embodiment. [Figure 16] 13A and 13B are schematic diagrams illustrating the reflection of light on a timepiece dial according to another embodiment. [Figure 17] FIG. 11 is a cross-sectional view of a timepiece dial according to a first modified example of the second embodiment. [Figure 18] FIG. 11 is a cross-sectional view of a timepiece dial according to a second modified example of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] [clock] Fig. 1 is a cross-sectional view of a timepiece 1 having a dial 3 according to an embodiment. Fig. 2 is a plan view of the dial 3. Fig. 3 is a cross-sectional view of the dial 3. Fig. 3 is a cross-sectional view taken along line II in Fig. 2.

[0022] As shown in FIG. 1, the timepiece 1 comprises a timepiece case 2, a dial 3, hands 4, a timepiece movement 5, and a rotary operating unit 7.

[0023] The watch case 2 (case) comprises a case body 10, a crystal 11, a bezel 12, and a back cover 13. The case body 10 is formed in a cylindrical shape. The crystal 11 closes one opening of the case body 10. The bezel 12 is provided at one opening end of the case body 10. The case body 10 holds the crystal 11. The back cover 13 closes the other opening of the case body 10. The watch case 2 houses a dial 3, hands 4, and a movement 5. Below, the position of each component is provisionally determined based on Fig. 1. For example, the crystal 11 is positioned above the back cover 13. The positions shown here do not limit the position of the timepiece 1 when in use.

[0024] The hands 4 are disposed between the dial 3 and the glass 11. The hands 4 are attached to a rotation shaft 14 of the movement 5. The movement 5 is disposed between the dial 3 and the back cover 13. The movement 5 includes a drive source that drives the rotation shaft 14. The rotation shaft 14 extends from the center of the dial 3 in a direction perpendicular to the dial 3.

[0025] The rotary operation unit 7 includes a rotary shaft portion 71 and a head portion 72. The rotary operation unit 7 (crown) rotates components within the movement 5.

[0026] [Clock dial] (First embodiment) As shown in Fig. 2, the dial 3 (timepiece dial) is formed in a circular shape. The dial 3 can be seen through a glass 11 (see Fig. 1). Viewing the dial 3 from a direction perpendicular to the dial 3 is called a plan view.

[0027] The dial 3 is formed of, for example, one or more of metal, ceramic, glass, and plastic. Examples of metals constituting the dial 3 include one or more of (A) copper, (B) iron, (C) titanium, (D) gold, (E) silver, (F) platinum, and (G) nickel, or alloys containing one or more of (A) to (G) as main components. A "main component" is, for example, a component that accounts for more than 50% by mass of the whole. Using these materials makes it easier to process the dial 3 and reduces costs.

[0028] A central hole 3c through which the rotary shaft 14 is inserted is formed in the center of the dial 3. The central hole 3c passes through the dial 3 in the thickness direction.

[0029] A plurality of indexes 23 are formed on the upper surface 3a (first main surface) of the dial 3. The indexes 23 are, for example, indicators that show the time. The plurality of indexes 23 are, for example, formed at positions close to the outer periphery of the dial 3 at intervals in the circumferential direction of the dial 3. The plurality of indexes 23 are, for example, formed at the 1 o'clock to 12 o'clock positions. The indexes 23 are formed integrally with the dial 3.

[0030] The shape of the index 23 is not particularly limited. The index 23 has the shape of, for example, a figure, a letter, a symbol, or the like. The index 23 may be, for example, in a plan view, a bar shape extending along the radial direction of the dial 3, or may be a circle, a polygon (for example, a triangle, a rectangle, a trapezoid), or a number (Arabic numerals, Roman numerals, etc.). The index 23 is also called an hour mark. As shown in FIG. 3, the index 23 is formed so as to protrude upward from the upper surface 3a of the dial 3.

[0031] The method of forming the index 23 is not particularly limited. The index 23 can be formed in a convex shape by pressing the dial 3 or the like. The index 23 can also be formed by cutting the surface when the dial 3 is manufactured. If the dial 3 is made of plastic or the like, the index 23 can also be formed by a molding method such as injection molding. The index 23 can also be formed by electroforming or transfer printing.

[0032] A display layer containing a phosphorescent material may be formed on the surface of the index 23. The phosphorescent material absorbs energy when stimulated by light, converts the absorbed energy into visible light, and emits light even after the stimulation stops. The use of a display layer made of a phosphorescent material makes the index 23 easier to see even in dark places. If the display layer has a color different from that of the dial 3, the visibility of the display layer can be improved. The display layer may be made of a fluorescent material. The display layer may be formed by printing, painting, or the like. The display layer may be separate from the index 23 and may be attached to the surface of the index 23.

[0033] FIG. 4 is a perspective view of a part of the dial 3 in a cross-sectional state. FIG. 5 is a plan view of a part of the dial 3. The left-right direction (horizontal direction) in FIG. 5 is the X direction (first direction). The X direction is a direction along the top surface 3a and passes through the 3 o'clock position and the 9 o'clock position of the dial 3. The up-down direction (vertical direction) in FIG. 5 is the Y direction (second direction). The Y direction is a direction along the top surface 3a and is perpendicular to the X direction. The Y direction is a direction passing through the 6 o'clock position and the 12 o'clock position of the dial 3. The Z direction is perpendicular to the X direction and the Y direction. The plane defined by the X direction and the Y direction is the XY plane. The Z direction is the up-down direction (height direction). FIG. 5 shows a rectangular region of the top surface 3a, 8 mm wide by 6 mm long. FIG. 6 is a diagram showing the height distribution in the II-II cross section of FIG. 5. FIG. 6 shows the height distribution in the first cross section perpendicular to the X direction.

[0034] On the dial 3, the direction from 9 o'clock to 3 o'clock along the X direction is the +X direction (see Figure 2). The direction opposite to the +X direction is the -X direction. The direction from 6 o'clock to 12 o'clock along the Y direction is the +Y direction (see Figure 2). The direction opposite to the +Y direction is the -Y direction.

[0035] As shown in FIG. 4, the upper surface 3a (first main surface) of the dial 3 is provided with a surface decoration 31 in the form of projections and recesses. The shape of the surface decoration 31 is not particularly limited. The surface decoration 31 may be a pattern such as a wave pattern, stripe pattern, checkered pattern, polka dot pattern, wood grain pattern, stone grain pattern, geometric pattern, or random pattern. The surface decoration 31 may be, for example, a stylized figure of an animal or plant. The surface decoration 31 can be formed by pressing, molding, cutting, or the like when the dial 3 is manufactured.

[0036] As shown in Figs. 4 and 5, the surface decoration 31 has a plurality of convex portions 32. The convex portions 32 extend in a predetermined direction. In this embodiment, the surface decoration 31 has a first convex portion 32A to an eighth convex portion 32H, which are a plurality of convex portions 32, on line II-II in the region shown in Fig. 5. The first convex portion 32A to the eighth convex portion 32H are arranged in this order in the Y direction. The first convex portion 32A to the eighth convex portion 32H are formed, for example, at intervals in the Y direction. The convex portions 32 satisfy the following conditions (1) to (3).

[0037] (1) Height of the convex part on the first cross section As shown in FIG. 6, in the first cross section, two or more of the first convex portion 32A to the eighth convex portion 32H have different heights. For example, the first convex portion 32A to the eighth convex portion 32H have different heights. P1 to P8 are the apexes of the first convex portion 32A to the eighth convex portion 32H, respectively. The height of the convex portion 32 is the height of the apex relative to a reference height position on the dial 3 (for example, the lowest height position of the upper surface 3a in the area shown in FIG. 5). For example, the height of the fifth convex portion 32E is the height H of the apex P5 relative to the reference height position.

[0038] (2) An inclination angle of at least one of the slopes of the protrusions in the first cross section The shape of the convex portion 32 in the first cross section is, for example, an inverted V shape having a first inclined surface 32a and a second inclined surface 32b. In at least one convex portion 32, the inclination angle between the first inclined surface 32a and the second inclined surface 32b is different in the first cross section. In this embodiment, at least the fifth convex portion 32E meets this condition. It is preferable that all of the first convex portion 32A to the eighth convex portion 32H correspond to "the inclination angle between the first inclined surface 32a and the second inclined surface 32b is different". It is sufficient that at least one of the first convex portion 32A to the eighth convex portion 32H meets this condition.

[0039] The first slope 32a of the fifth convex portion 32E gradually increases in height toward the apex P5 in the -Y direction. The second slope 32b of the fifth convex portion 32E gradually decreases in height from the apex P5 in the -Y direction. The second slope 32b is a slope on the opposite side of the first slope 32a in the fifth convex portion 32E. The first slope 32a and the second slope 32b are inclined with respect to the XY plane.

[0040] Fig. 7 is an enlarged plan view of region A in Fig. 5. Fig. 8 is a diagram showing the height distribution in cross section taken along line III-III in Fig. 7. 8, the inclination angle α of the first inclined surface 32a of the fifth protrusion 32E is larger than the inclination angle β of the second inclined surface 32b. The inclination angles α and β are angles with respect to the Z direction.

[0041] For example, the first inclined surface 32a and the second inclined surface 32b may have a constant inclination angle over the entire height, or the inclination angle may not be constant. In this embodiment, the first inclined surface 32a and the second inclined surface 32b have a constant inclination angle over the entire height.

[0042] The first inclined surface 32a and the second inclined surface 32b may have a shape (curved concave) in which the inclination angle (angle with respect to the Z direction) decreases toward the apex in the first cross section. The first inclined surface 32a and the second inclined surface 32b may have a shape (curved convex) in which the inclination angle (angle with respect to the Z direction) increases toward the apex in the first cross section.

[0043] The inclination angle α of the first inclined surface 32a may be, for example, the angle of a tangent to the highest point of the first inclined surface 32a (angle with respect to the Z direction). The inclination angle β of the second inclined surface 32b may be, for example, the angle of a tangent to the highest point of the second inclined surface 32b (angle with respect to the Z direction). The inclination angles of the first inclined surface 32a and the second inclined surface 32b may be average inclination angles of the entire height.

[0044] The shape of the convex portion 32 in the first cross section is not limited to an inverted V shape. The shape of the convex portion in the first cross section may be a shape (trapezoid) in which a portion including the apex is removed from an inverted V-shaped convex portion. The trapezoidal convex portion has a top surface and a first inclined surface and a second inclined surface extending obliquely downward from the periphery of the top surface. The top surface is, for example, a flat surface along the XY plane. The multiple convex portions do not need to have the same height. In other words, two or more of the multiple convex portions may have different heights.

[0045] (3) Number of protrusions on the second cross section FIG. 9 is a plan view of a partial area of ​​dial 3. The left-right direction (horizontal direction) in FIG. 9 is the X direction (first direction). The up-down direction (vertical direction) in FIG. 9 is the Y direction (second direction). FIG. 9 shows a rectangular area of ​​top surface 3a, measuring 8 mm wide by 6 mm long. FIG. 10 is a diagram showing the height distribution in cross section IV-IV in FIG. 9. FIG. 10 shows the height distribution in a second cross section perpendicular to the Y direction.

[0046] As shown in FIG. 9 and FIG. 10, there are two or more convex portions 32 in the second cross section. In this embodiment, the surface decoration 31 has a first convex portion 32I and a second convex portion 32J, which are multiple convex portions 32, on the line IV-IV in the area shown in FIG. 9. P11 and P12 are the apexes of the first convex portion 32I and the second convex portion 32J, respectively. The first convex portion 32I and the second convex portion 32J are aligned in the X direction. The first convex portion 32I and the second convex portion 32J are formed, for example, at an interval in the X direction. The number of convex portions 32 may be three or more. In this embodiment, the number of convex portions 32 in the second cross section is two or more in a part of the area of ​​the dial 3, but the number of convex portions 32 in the second cross section may be two or more for the entire length in the X direction.

[0047] Fig. 11 is a plan view of a partial area of ​​the dial 3. Fig. 11 is a plan view of the same area as Fig. 9. Fig. 12 is a diagram showing the height distribution in the VV section of Fig. 11. The VV section of Fig. 11 is a section at a different position in the Y direction from the IV-IV section of Fig. 9. Fig. 12 shows the height distribution in a second section perpendicular to the Y direction.

[0048] As shown in FIG. 11 and FIG. 12, there are two or more convex portions 32 in the second cross section. In this embodiment, the surface decoration 31 has a third convex portion 32K and a fourth convex portion 32L, which are multiple convex portions 32, on the line VV in the area shown in FIG. 11. P13 and P14 are the apexes of the third convex portion 32K and the fourth convex portion 32L, respectively. The third convex portion 32K and the fourth convex portion 32L are aligned in the X direction. The third convex portion 32K and the fourth convex portion 32L are formed, for example, at an interval in the X direction. The number of convex portions 32 may be three or more. In this embodiment, the number of convex portions 32 in the second cross section is two or more in a part of the area of ​​the dial 3, but the number of convex portions 32 in the second cross section may be two or more for the entire length in the X direction.

[0049] In this embodiment, the surface decoration 31 has two or more convex portions 32 for two second cross sections (the IV-IV cross section in Figure 9 and the VV cross section in Figure 11), but the surface decoration 31 may have two or more convex portions 32 for three or more second cross sections.

[0050] It is preferable that the protrusion 32 satisfies the following conditions (4) and (5).

[0051] (4) Relationship between the distance between the apexes of adjacent convex portions in the X direction (first direction) and the distance between the apexes of adjacent convex portions in the Y direction (second direction) Fig. 13 shows a plan view and height distribution of a partial area of ​​the dial 3. Fig. 13(A) shows a plan view of a partial area of ​​the dial 3. Fig. 13(B) shows the height distribution in the VI-VI cross section (first cross section) of Fig. 13(A). Fig. 13(C) shows the height distribution in the VII-VII cross section (second cross section) of Fig. 13(A).

[0052] As shown in FIG. 13(A), the surface decoration 31 has a first convex portion 32M to a seventh convex portion 32S, which are a plurality of convex portions 32, on line VI-VI within the region shown in FIG. 13(A). P15 to P21 are the vertices of the first convex portion 32M to the seventh convex portion 32S, respectively. The first convex portion 32M to the seventh convex portion 32S are arranged in this order in the Y direction. The distance between the vertices of two adjacent convex portions 32 among the first convex portion 32M to the seventh convex portion 32S is referred to as the "first vertex distance." The first vertex distance is the distance between the vertices of two adjacent convex portions 32 in the Y direction (second direction).

[0053] As shown in FIG. 13B, the first vertex distance is, for example, the average value of the vertex distances W1 to W6. The vertex distance W1 is the vertex distance between the first convex portion 32M and the second convex portion 32N. The vertex distance W2 is the vertex distance between the second convex portion 32N and the third convex portion 32O. The vertex distance W3 is the vertex distance between the third convex portion 32O and the fourth convex portion 32P. The vertex distance W4 is the vertex distance between the fourth convex portion 32P and the fifth convex portion 32Q. The vertex distance W5 is the vertex distance between the fifth convex portion 32Q and the sixth convex portion 32R. The vertex distance W6 is the vertex distance between the sixth convex portion 32R and the seventh convex portion 32S.

[0054] As shown in FIG. 13(A), the surface decoration 31 has a fourth convex portion 32P and an eighth convex portion 32T, which are multiple convex portions 32, on line VII-VII within the region shown in FIG. 13(A). P18 and P22 are the vertices of the fourth convex portion 32P and the eighth convex portion 32T, respectively. The fourth convex portion 32P and the eighth convex portion 32T are aligned in the X direction. The distance between the vertices of the fourth convex portion 32P and the eighth convex portion 32T is referred to as the "second vertex distance."

[0055] As shown in FIG. 13(C), the second vertex distance is the vertex distance L1 between two protrusions 32 adjacent to each other in the X direction (first direction). The number of the protrusions 32 may be three or more. In this embodiment, since the number of the protrusions 32 is two, L1 is the second inter-vertex distance, but when the number of the protrusions 32 is three or more, the second inter-vertex distance is, for example, the average value of the inter-vertex distances of adjacent protrusions 32.

[0056] The first inter-vertex distance (for example, the average value of W1 to W6 shown in FIG. 13B) is different from the second inter-vertex distance (for example, L1 shown in FIG. 13C). In this embodiment, the second inter-vertex distance is greater than the first inter-vertex distance. In this embodiment, the second inter-vertex distance is greater than the first inter-vertex distance, but the first inter-vertex distance may be greater than the second inter-vertex distance.

[0057] (5) Shape of the ridge of the convex part 4, the protrusion 32 has a ridge line 33. The ridge line 33 is a boundary line between a first inclined surface 32a and a second inclined surface 32b of the protrusion 32. The ridge line 33 is a line obtained by connecting vertices of a plurality of cross sections perpendicular to the extension direction of the protrusion 32. The ridge line 33 is formed over the entire length of the protrusion 32 in the extension direction.

[0058] As shown in FIG. 5, at least a portion of the ridgeline 33 is curved. The curved shape is, for example, a circular arc shape, an elliptical arc shape, a high-order curve shape (parabola shape, hyperbola shape, etc.), etc. The ridgeline 33 has, for example, at least one curved portion. The curved portion is curved. The ridgeline 33 has, for example, a first curved portion 33a, a second curved portion 33b, and a third curved portion 33c. The first curved portion 33a, the second curved portion 33b, and the third curved portion 33c are arranged in this order in the length direction of the convex portion 32. The first curved portion 33a is curved so as to be convex toward one side (the +Y direction). The second curved portion 33b is curved so as to be convex toward the other side (the -Y direction). The third curved portion 33c is curved so as to be convex toward one side (the +Y direction). In this embodiment, the protrusions 32 have at least a partially curved ridgeline 33, but protrusions having straight ridgelines may also be used.

[0059] The ridge line 33 may have a shape that combines one or more first curved portions and one or more second curved portions that are curved so as to be convex on the opposite side to the first curved portions.

[0060] The upper surface 3a of the dial 3 may be subjected to a surface treatment. The surface treatment can be formed by at least one of painting, printing, wet plating, and dry plating, for example. Dry plating includes physical vapor deposition (PVD) and chemical vapor deposition (CVD). These surface treatments can improve the design of the dial 3.

[0061] [Effects of the dial according to the embodiment] The dial 3 of this embodiment is formed with a surface decoration 31 having a plurality of protrusions 32. The surface decoration 31 has the following configuration: (i) In at least one protrusion 32, in the first cross section, the inclination angle α of the first slope 32a and the inclination angle β of the second slope 32b are different (see FIG. 8). (ii) In the first cross section, two or more of the plurality of protrusions 32 have different heights (see FIG. 6). (iii) In the second cross section, there are two or more protrusions 32 (see FIG. 10).

[0062] According to the configuration (i), it is possible to design one of the two inclined surfaces 32a, 32b so that light is more likely to strike it, and the other inclined surface is less likely to strike it. Since the brightness of the two inclined surfaces 32a, 32b can be set arbitrarily, the contrast in brightness between the two inclined surfaces 32a, 32b can be increased. This gives the surface decoration 31 a deep and luxurious appearance. Furthermore, since the range of brightness that can be set for the two inclined surfaces 32a, 32b is increased, the freedom in designing the dial 3 can be increased. This makes it possible to realize a dial 3 equipped with a surface decoration 31 that has excellent decorativeness.

[0063] According to configuration (ii), since the heights of two or more protrusions 32 are different, it is possible to mix protrusions 32 with a large area on which light hits and protrusions 32 with a small area on which light hits. This gives the surface decoration 31 an appearance that is not monotonous but has depth. Furthermore, since the heights of the protrusions 32 are not uniform, it is possible to achieve a variety of expressions. This increases the degree of freedom in the design of the dial 3. This makes it possible to realize a dial 3 equipped with a surface decoration 31 that has excellent decorativeness.

[0064] According to configuration (iii), since there are two or more protrusions 32 not only in the first cross section but also in the second cross section, the protrusions 32 constituting the surface decoration 31 are formed at diversified positions in a plurality of directions. This gives the surface decoration 31 a non-monotonous, luxurious appearance. This makes it possible to realize a dial 3 equipped with a surface decoration 31 with excellent decorativeness.

[0065] In the dial 3, the distance between the apexes of two adjacent convex portions 32 in the Y direction (second direction) (see FIG. 13(B)) is different from the distance between the apexes of two adjacent convex portions 32 in the X direction (first direction) (see FIG. 13(C)). Therefore, in the Y direction (second direction) where the distance between the apexes is large, even if the direction of light hitting the dial 3 changes, the visibility of the part of the convex portions 32 that is hit by the light is unlikely to change. Therefore, the effect of the surface decoration 31 on the visibility of the index 23 can be kept small. Therefore, even if the decorativeness is enhanced by forming an uneven surface decoration 31 on the dial 3, the visibility of the index 23 remains good.

[0066] The protrusions 32 have at least a partially curved ridgeline 33 in a plan view. Since at least a portion of the ridgeline 33 of the protrusions 32 is curved, it is possible to give the surface decoration 31 an appearance that is not monotonous but has a sense of luxury.

[0067] The dial 3 can be formed with the surface decoration 31 together with the indexes 23 by press processing or the like. The dial 3 is excellent in terms of mass production and ease of processing because the number of manufacturing steps can be reduced. The dial 3 can be manufactured at low cost because the number of manufacturing steps can be reduced. The dial 3 may also be manufactured by electroforming or transfer printing.

[0068] The timepiece 1 has a dial 3. Therefore, as described above, it is possible to realize a timepiece 1 that has a dial 3 that is provided with a highly decorative surface decoration 31.

[0069] [Clock dial] (Second embodiment) Fig. 14 is a partial cross-sectional view of the dial 103 according to the second embodiment. Fig. 15 is a schematic diagram illustrating light reflection on the dial 103. Configurations common to the first embodiment are given the same reference numerals and description thereof will be omitted.

[0070] As shown in Fig. 14, the upper surface 3a of the dial 103 is covered with a transparent resin layer 41. The dial 103 has the same configuration as the dial 3 of the first embodiment (see Fig. 3) except for the formation of the resin layer 41. "Transparent" means, for example, that the transmittance of visible light in the thickness direction (see JIS K 7375:2008) is 50% or more over the entire wavelength range of visible light (380 nm to 780 nm).

[0071] The resin layer 41 protects the surface decoration 31 and also gives a three-dimensional and deep visual effect to the surface decoration 31. The resin layer 41 is formed of a thermoplastic resin such as a polyolefin resin (such as polypropylene), an ABS resin, or an acrylic resin. The resin layer 41 may also be formed of a thermosetting resin such as a melamine resin, a phenol resin, a polyurethane resin, or an epoxy resin.

[0072] The resin layer 41 can be formed, for example, as follows. An uncured resin is applied to the upper surface 3a of the dial 3, and the resin is then cured. This forms the resin layer 41. If necessary, the surface of the resin layer 41 is polished. Polishing can reduce surface irregularities of the resin layer 41 and give the resin layer 41 a glossy appearance.

[0073] [Effects of the dial according to the embodiment] In addition to the same effects as the dial 3 of the first embodiment, the dial 103 of this embodiment has the following effects. As shown in Figure 15, the dial 103 has an upper surface 3a covered with a transparent resin layer 41. A portion of the irradiated light 51 irradiated to the dial 103 is reflected by the surface of the resin layer 41 to become a first reflected light 52. Another portion of the irradiated light 51 passes through the surface of the resin layer 41 and strikes the surface decoration 31, where it is reflected by the surface of the surface decoration 31 and emitted as a second reflected light 53. Since multiple reflected lights (first reflected light 52 and second reflected light 53) are emitted with reflection points at different height positions, a three-dimensional, deep visual effect can be given to the surface decoration 31.

[0074] Fig. 16 is a partial cross-sectional view of a dial 203 according to another embodiment of the present invention. Fig. 16 is a schematic diagram illustrating reflection of light on the dial 203. As shown in Fig. 16, the dial 203 has the same structure as the dial 103 (see Fig. 15) except that it does not have the resin layer 41. Since the dial 203 does not have a resin layer, two types of reflection do not occur. Therefore, it is difficult to create a three-dimensional visual effect.

[0075] FIG. 17 is a cross-sectional view of a dial 303 according to a first modified example of the second embodiment. As shown in FIG. 17, in the dial 303, the resin layer 41A is formed on the upper surface 3a in an area excluding the index 23. In the dial 303, the resin layer 41A can be formed thin, so the overall thickness can be reduced. In the dial 303, the index 23 is not covered with the resin layer 41A, so there is also the advantage that the index 23 is easier to see.

[0076] FIG. 18 is a cross-sectional view of a dial 403 according to a second modified example of the second embodiment. As shown in FIG. 18, in the dial 403, the resin layer 41B has a curved surface that is convex upward. The dial 403 has a resin layer 41B with a curved surface, which enhances the visual effect.

[0077] The present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications are possible within the technical scope of the present invention. For example, the dial 3 shown in Fig. 3 has a flat bottom surface, but a recess may be formed at a position corresponding to the index 23 on the bottom surface of the dial 3. [Explanation of symbols]

[0078] 1. Clock 3,103,303,403…Dial (clock dial) 3a…Top surface (first principal surface) 31...Surface decoration 32…Convex part 33…Ridgeline 41,41A,41B…Resin layer α…Inclination angle β…Inclination angle

Claims

1. A surface decoration having a plurality of protrusions is formed on the first main surface; At least one of the convex portions has a first inclined surface that increases in height toward an apex and a second inclined surface that decreases in height from the apex, the inclination angles of the first inclined surface and the second inclined surface are different in a first cross section perpendicular to a first direction along the first main surface, In the first cross section, two or more of the plurality of protrusions have different heights, In a second cross section perpendicular to a second direction perpendicular to the first direction along the first main surface, there are two or more protruding portions. Clock dial.

2. a distance between vertices of the protruding portions adjacent to each other in the first direction is different from a distance between vertices of the protruding portions adjacent to each other in the second direction; 2. The timepiece dial according to claim 1.

3. The protrusion has at least a partially curved ridge line in a plan view.

2. The timepiece dial according to claim 1.

4. The first main surface is covered with a transparent resin layer.

2. The timepiece dial according to claim 1.

5. A timepiece dial according to any one of claims 1 to 4, clock.

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