JP6532572B2 - Solar cell watch - Google Patents

Description

  The present invention relates to a solar cell watch.

  In a solar cell watch having a solar cell arranged on the back side of the dial, the color on the appearance looks different between the area where the solar cell is present and the area where the solar cell is not present, and the appearance may be impaired.

  Patent Document 1 below describes a timepiece with a solar cell provided with a shielding sheet which is opaque at least in a region where the solar cell is not disposed, on the front side or the back side of the solar cell.

JP, 2012-211895, A

  In the watch with a solar cell described in Patent Document 1, the arrangement of the shielding sheet makes it appear as if the cell is also present in the notch portion of the solar cell. With this technique, the difference in color between the regions where the solar cell is present and the regions where it is not present is substantially eliminated. However, there are individual differences in the color of the solar cell, it is difficult to exactly match the color of the solar cell and the shielding sheet, and there is a concern that the boundary between the area where the solar cell exists and the area where it does not exist may still be visually recognized Be done.

  Then, this invention aims at provision of the timepiece with a solar cell which reduced the visibility of the boundary of the area | region which a solar cell exists, and the area | region which does not exist.

  In order to solve the above problems, the invention disclosed in the present application has various aspects, and the outline of typical ones of the aspects are as follows.

  (1) It has a dial and a solar cell disposed on a part of the back side of the dial, and the dial has a concavo-convex pattern on the surface, and a part of the concavo-convex pattern is a plan view In the timepiece with a solar cell, the boundary between the area where the solar cell exists and the area where the solar cell does not exist.

  (2) In (1), a sheet disposed between the dial and the solar cell, and a region provided between the dial and the sheet and in which the solar cell is present and absent And a colored matte surface or matte layer covering the surface of the solar cell watch.

  (3) In (2), a watch with a solar cell, wherein the color of the matte surface or the matte layer is blacker than the color of the solar cell.

  (4) In any one of (1) to (3), the display device further includes a shielding member that covers at least a region where the solar cell is not disposed, and the color of the shielding member is darker than the color of the light receiving surface of the solar cell , Watch with solar cells.

  (5) In any of (1) to (4), the solar device further includes a decorative member having a pattern or a shape along a line extending the boundary between the region where the solar cell is present and the region where the solar cell is absent in plan view Battery watch.

  (6) In any one of (1) to (5), the solar cell-equipped timepiece has a region where the solar cell does not exist has a shape in which a direction from 10 o'clock to 2 o'clock is notched in a fan shape.

  (7) In (1), the dial is provided with a colored layer on the back surface, and is provided between a sheet disposed between the dial and the solar cell, and between the dial and the sheet A solar cell watch having a matte surface or a matte layer covering an area where the solar cell is present and an area where the solar cell is absent.

  (8) In (1), a colored sheet disposed between the dial and the solar cell, and the dial and the sheet provided between the dial and the sheet, and the solar cell is present and absent A solar cell watch, further comprising: a matte surface or a matte layer covering the region.

  According to the present invention, it is possible to obtain a solar cell-equipped timepiece in which the visibility of the boundary between the region where the solar cell is present and the region where the solar cell is not present is reduced.

It is a top view showing a satellite radio watch according to an embodiment of the present invention. It is a top view which shows a solar cell. It is a top view which shows a shielding member. It is a fragmentary sectional view of a satellite radio watch. It is a fragmentary sectional view of a satellite radio watch according to a first modification. It is a fragmentary sectional view of a satellite radio watch according to a second modification. It is a fragmentary sectional view of a satellite radio watch according to a third modification. It is a fragmentary sectional view of a satellite radio watch according to a fourth modification. It is a fragmentary sectional view of the satellite radio wristwatch which concerns on a 5th modification. It is a top view which shows the satellite radio wave watch concerning the 6th modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing a satellite radio wave watch 1 according to an embodiment of the present invention. In the figure, there are shown a body 10 which is an exterior (watch case) of a satellite radio watch, a dial 14 disposed in the body 10 and an hour hand 15, a minute hand 16 and a second hand 17 which are hands indicating time. In addition, a crown 13 and a button 12 for the user to perform various operations are arranged on the side of the body 10 on the 3 o'clock side. A band fixing portion 11 for fixing the band extends from the side surfaces on the 12 o'clock side and the 6 o'clock side of the cylinder 10.

  The design of the satellite radio wave watch 1 shown in the figure is an example. Besides the one shown here, for example, the body 10 may be square instead of round, and the presence, number, and arrangement of the crown 13 and the button 12 are arbitrary. Further, in the present embodiment, the hands are three hands of the hour hand 15, the minute hand 16, and the second hand 17. However, the present invention is not limited to this. Even if the second hand 17 is omitted, the day of the week, the presence or absence of a time zone or summer time, radio waves The status of reception, remaining battery power, guidelines for various displays, date display, etc. may be added.

  In this specification, the term "satellite radio wristwatch" refers to a wristwatch that receives a satellite signal from a satellite that transmits a satellite signal including information on date and time, such as a GPS satellite, and the date included in the satellite signal. It refers to a watch having a function of correcting the internal time which is information of the time held inside the watch based on information related to time and time, that is, reference information. However, the present invention is not limited to the satellite radio wristwatch, but may be applied to a radio wristwatch that receives a general standard radio wave and corrects the internal time, or may be applied to a wristwatch that does not have such a time correction function. . Furthermore, the present invention may be applied not only to watches but also to clocks and clocks.

  In the satellite radio-controlled watch 1, a windshield made of a transparent material such as glass is attached to the case 10 so as to cover the dial 14. In addition, on the opposite side of the windshield, a back cover is attached to the cylinder 10. In the present specification, hereinafter, the direction in which the windshield of the satellite radio watch 1 is disposed (front direction in FIG. 1) will be referred to as front side, and the direction in which the back cover is disposed (back direction in FIG. 1) will be referred to as back side.

  A solar cell 30 is disposed on the back side of the dial 2, and power is generated by light incident from the front side. Therefore, the dial 14 is formed of a material that transmits light to a certain extent. Although the details will be described later, as shown in FIG. 2, the solar cell 30 has a substantially circular shape, and the direction from 10 o'clock to 2 o'clock is notched like a fan. A patch antenna 20 for receiving satellite signals is disposed on the back of the dial 14 (in the area where the solar cell 30 is not present). Further, although details will be described later, as shown in FIG. 4, in the patch antenna 20, the front surface is a receiving surface 20a that receives radio waves from satellites. The receiving surface 20a of the patch antenna 20, the light receiving surface of the solar cell 30, and the dial 14 are provided in parallel with each other, and all face the front side.

  By the way, generally, in a radio-controlled watch that performs time correction using a standard radio wave transmitted from a ground station using a long wave band, a so-called bar antenna of a type in which a coil is wound around a magnetic core such as ferrite or amorphous alloy is used. There are many. On the other hand, in the satellite radio watch 1 according to the present embodiment, the signal transmitted from the satellite is received using the much higher frequency UHF band. Therefore, the patch antenna 20 is used as a small antenna suitable for receiving signals in the UHF band. And, since the satellite signal has a high frequency, when the electrode of the solar cell 30 is disposed on the front side of the patch antenna 20, its reception sensitivity is significantly reduced. Therefore, as described above, a notch is formed in a part of the solar cell 30, and the patch antenna 20 is disposed there so that the electrode of the solar cell 30 is not disposed above the reception surface 20a, that is, on the front side. There is. In place of the patch antenna 20, a chip antenna or an inverted F antenna may be employed.

  In addition, a mechanism (movement) for driving a pointer, a storage battery for storing the electric power generated by the solar cell 30, a controller for operation control of the satellite radio watch 1, inside the body 10 of the satellite radio watch 1, A receiver circuit or the like that processes the received satellite signal is accommodated.

  The dial 14 is wider than the opening on the front side of the cylinder 10, and the cylinder 10 covers the peripheral portion. For this reason, only the area (exposed area) inside the contour line (parting line) X of the opening of the cylinder 10 is visible from the outside through the windshield, and the dial 14 is outside the contour line X Area (non-exposed area) is hidden by the cylinder 10 and can not be seen from the outside.

  FIG. 2 is a plan view showing a solar cell 30 housed inside the case 10 of the satellite radio watch 1. As shown in FIG. FIG. 3 is a plan view showing the shielding member 40 housed inside the case 10 of the satellite radio watch 1. As shown in FIG. Furthermore, FIG. 4 is a partial cross-sectional view of the satellite radio wristwatch 1 mainly showing an area where the solar cell 30 and the patch antenna 20 are adjacent to each other.

  As shown in FIG. 2, the solar cell 30 is provided with a substrate 30b having a shape in which the direction from 10 o'clock to 2 o'clock is notched like a fan. In the example shown in FIG. 2, the angle which the notch 30c makes is 120 degrees. As described above, the patch antenna 20 is disposed in the inner area of the notch 30c (the area where the solar cell 30 does not exist, which will be referred to as a non-arrangement area) so that the receiving surface 20a faces the windshield. The angle formed by the notch 30c may be any angle as long as the patch antenna 20 can be accommodated. However, as described later, it is preferable that the pattern provided on the dial 14 and the decoration member disposed on the dial 14 and the side of the notch 30 c overlap in plan view. In addition, the area | region where the solar cell 30 exists is called an arrangement | positioning area | region to the area | region where the solar cell 30 does not exist being called a non-arrangement area | region.

  A plurality of engaging portions (concave and convex shapes) are provided at positions separated from each other on the periphery of the substrate 30b, and these engaging portions are a shell 10 itself or a frame (not shown) housed inside the shell 10 It is engaged with the cell support frame. Thus, the substrate 30 b is supported so as not to rotate in the satellite radio watch 1. In addition, these engaging portions are formed outside the above-mentioned outline X, and are not seen through from the front side of the dial 14. Furthermore, an opening for inserting the pointer shaft is formed at the center of the solar cell 30, and a plurality of cells 30a, which are power generation units provided with semiconductor thin films and electrodes, are formed on the surface.

  The shielding member 40 is disposed on the back side of the solar cell 30, and shields the notch 30c of the solar cell 30. The color of the shielding member 40 may be the color of the material (for example, resin) itself, or the surface of the colored member may be colored. This coloring may be a coating film of any opaque paint, or may be a semiconductor layer excluding the conductive layer functioning as an electrode from the layer constituting the cell 30a of the solar cell 30, and further laminating both of them. You may do so. When coloring is used as the coating film, the shielding member 40 is inexpensive and easy to manufacture, whereas when coloring is used as the semiconductor layer, there is an advantage that the color and texture of the cells 30a can be easily matched. A coating may be added to the coloring that is the semiconductor layer for fine adjustment. When the semiconductor layer is colored, the reason for excluding the conductive layer is to prevent the patch antenna 20 from receiving radio waves from the satellite. When coloring is used as a semiconductor layer, a PIN layer (a layer of a PIN diode in which an I layer, which is an authentic semiconductor layer, is interposed between a P layer and an N layer) used as a semiconductor layer of the cell 30a is used. Although it may be used as a semiconductor layer, it may be replaced with only I layer or P layer or N layer as a semiconductor layer. The shielding member 40 only needs to approximate its color and texture to the cell 30 a, and the function as the solar cell 30 is not necessary.

  Since it is difficult to make the color of the shielding member 40 the same as the color of the light receiving surface of the solar cell 30, it is desirable that the color of the shielding member 40 be darker than the color of the light receiving surface of the solar cell 30. Specifically, the color of the shielding member 40 is preferably darker than the color of the cell 30a or the substrate 30b. When the color of the shielding member 40 is darker than the color of the light receiving surface of the solar cell 30, the cells 30a or the substrate 30b are present in the non-arranged area as viewed from the front side of the dial 14 as compared with the case other than that. It is easy to make it look like. Here, that the color is dark may mean that the lightness of the color is low, for example, when adopting the Munsell color system as a method of expressing the color. Since it is desirable that the boundary between the shielding member 40 and the solar cell 30 is difficult to distinguish in appearance, the hue and saturation of the shielding member 40 are desirably close to the hue and saturation of the cell 30a or the substrate 30b. As another example, when the CIE xy color system is adopted as a method of expressing color, dark color may mean that the value of the luminous reflectance Y is small. When the CIE xy Y color system is employed, it is desirable that the values of x and y possessed by the shielding member 40 be close to the values of x and y possessed by the cell 30a or the substrate 30b.

  The coloring of the shielding member 40 is sufficient if it is applied to the non-arranged area of the surface of the shielding member 40. However, by coloring the entire surface of the shielding member 40, the patch antenna 20 is shielded even if the positions of the shielding member 40 and the solar cell 30 are not precisely aligned. Therefore, in the case of coloring the entire surface of the shielding member 40, it is possible to obtain the solar battery-equipped timepiece 1 in which the visibility of the boundary between the placement area and the non-placement area is reduced by a simpler assembly process. Moreover, as another structure of the shielding member 40, it is also possible to arrange the shielding member 40 on the front side of the solar cell 30, and to color only the area | region which covers a non-arranged area among sheets formed with a transparent member. In this case, since it is necessary to precisely align the shielding member 40 with the solar cell 30, it is not preferable.

  A plurality of engaging portions (concave and convex shapes) are provided at positions separated from each other also on the peripheral edge of the shielding member 40, and the solar cell support frame (not shown) in which these engaging portions are accommodated in the barrel 10 itself or in the barrel 10 Is engaged. Thus, the shielding member 40 is also supported so as not to rotate in the satellite radio watch 1. These engaging portions are also formed outside the outline X.

  In the present embodiment, the shielding member 40 is a single sheet, but the shielding member 40 may not be sheet-like. For example, the surface of the solar cell support frame which is a frame housed inside the barrel 10 may be a coating film surface or the like, and the solar cell 30 may be disposed on the solar cell support frame. In that case, the patch antenna 20 is disposed on the back side or inside of the solar cell support frame. Even in such a case, by making the color of the surface of the solar cell support frame darker than the color of the light receiving surface of the solar cell 30, the cell 30a or the substrate 30b is also present in the non-placement area. I can show it.

  As shown in FIG. 4, a sheet 50 is disposed between the dial 14 and the solar cell 30. A matte layer 60 is provided on the surface of the sheet 50. The sheet 50 and the matting layer 60 are formed of a material that transmits light to some extent in order to expose the light receiving surface of the solar cell 30 to external light.

  The matte layer 60 is a layer that diffuses light by having an uneven surface on the front side. Here, when the sheet 50 has a thickness, the distance between the matte layer 60 and the light receiving surface of the solar cell 30 is maintained. Then, light from the dial 14 side is reflected by the light receiving surface of the solar cell 30 and returned to the dial 14 side, and light reflected from the surface of the shielding member 40 and returned to the dial 14 is the matte layer At 60, it will be diffused uniformly and irregularly. Therefore, when observed from the dial 14 side, the boundary between the arranged area and the non-arranged area becomes unclear, and the so-called Mach effect is suppressed. Therefore, most of the color difference between the arranged area and the non-arranged area is visually recognized. It disappears.

  On the other hand, if the surface of the cell 30a constituting the solar cell 30 and the matting layer 60 are in contact with each other without being separated because the matting layer 60 is formed on the back surface of the sheet 50, etc. A difference occurs in the light scattering state by the matting layer 60 between the area where the 60 contacts the cell 30 a and the area where the matting layer 60 separates from the shielding member 40. Therefore, the scattering state of light is not uniform in both areas, and the difference in color between the arranged area and the non-arranged area becomes noticeable. This is because in the region where the member is in contact with the back surface side of the matte layer 60, light is incident on the member from the convex portion on the back surface of the matte layer 60 without passing through the space. In the area where the members do not contact, light is emitted from the entire back surface of the matting layer 60 into the space, which causes a large difference in the light path between the two.

  The matte layer 60 may be colored as long as it is a material that transmits the amount of light necessary for the solar cell 30 to generate power. When the matte layer 60 is to be colored and transparent, it is desirable that the color of the matte layer 60 be darker than the colors of the cells 30 a and the substrate 30 b. Here, that the color is black may mean that the saturation of the color is low, for example, when adopting the Munsell color system as a method of expressing the color. Also, for example, when the CIE xy color system is adopted as a method of expressing color, black means that it is closer to the color represented by the point of x = 1/3 and y = 1/3. It is good to do. A point of x = 1/3 and y = 1/3 generally indicates that it is achromatic.

  If the matte layer 60 is colored and transparent, when observed from the dial 14 side, the difference in color between the arranged area and the non-arranged area is further reduced and visually recognized. That is, even when a difference in color or texture occurs between the solar cell 30 and the shielding member 40 due to the individual difference between the solar cells 30, the difference between the two is more perceived by looking through the common matting layer 60. It becomes difficult. In addition, as for the matte layer 60, it is desirable not to apply a paint directly to the surface. This is because when the paint is applied to the surface of the matte layer 60, the concave portions of the uneven surface provided on the surface of the matte layer 60 are filled with the paint and the optical properties such as the refractive index of the paint are provided. This is because the light diffusion effect by the uneven surface is reduced. When a colored layer is provided by paint on the surface side of the matte layer 60, the paint is not applied directly to the matte layer 60, but the paint is applied to the dial 14 side as in the third modification described later. Is applied to form a colored layer, this problem is eliminated. In the present embodiment, the matte layer 60 may be transparent, and the sheet 50 may be colored and transparent.

  By arranging the shielding member 40 on the back surface side of the solar cell 30 as in the present embodiment, in the configuration in which the alignment is facilitated, the difference in height occurs between the arrangement area and the non-arrangement area. Even in such a configuration, the matte layer 60 is formed on the surface of the sheet 50, and the light diffusion effect is uniformly exhibited in these areas by arranging them apart from the arrangement area and the non-arrangement area. And the color differences in these areas can be made less noticeable.

  FIG. 5 is a partial cross-sectional view showing a region where the solar cell 30 and the patch antenna 20 are adjacent to each other in the satellite radio-controlled watch 1 according to the first modification. In the first modification, a first matte layer 61 is provided on the back surface of the dial 14, and a second matte layer 62 is provided on the surface of the sheet 50. An uneven surface is provided on the back surface of the first matte layer 61 and the surface of the second matte layer 62, respectively. As described above, by forming the matt layer as two layers, light which is incident from the dial 14 side and reflected by the light receiving surface of the solar cell 30 is diffused more strongly. The visibility of the boundaries is further reduced. In the first modification, either one of the first matte layer 61 and the second matte layer 62 may be colored and transparent, or both may be colored and transparent. Alternatively, only the first matting layer 61 may be provided without providing the second matting layer 62.

  FIG. 6 is a partial cross-sectional view showing a region where the solar cell 30 and the patch antenna 20 are adjacent to each other in the satellite radio-controlled watch 1 according to the second modification. The first matte layer 61 in the second modification is formed by laminating the first colored layer 61 a and the first matte layer 61 b in this order on the back surface of the dial 14. The second matte layer 62 is formed by laminating the second colored layer 62 a and the second matte layer 62 b on the surface of the sheet 50 in this order. Here, the first matting layer 61b and the second matting layer 62b are provided to face each other, and are disposed such that the uneven surfaces face each other. That is, the back surface of the first matte layer 61b and the surface of the second matte layer 62b are uneven surfaces. The first colored layer 61 a and the second colored layer 62 a are colored and transparent layers, and may be a coating film having a thickness and a color that transmits light. The first matte layer 61b and the second matte layer 62b may be transparent. In the case of the second modification, the transmittances of the first matte layer 61 and the second matte layer 62 can be adjusted by adjusting the thickness and color of the first colored layer 61a and the second colored layer 62a. . Therefore, there is an advantage that a desired transmittance can be obtained without precisely adjusting the thickness of the first matte layer 61b and the second matte layer 62b. In addition, any one of the first matting layer 61 and the second matting layer 62 may be provided.

  If the first matting layer 61b and the first colored layer 61a are formed directly on the surface of the second matting layer 62b, the concave portions of the uneven surface provided on the surface of the second matting layer 62b are the first matting. The light diffusion effect of these matting layers is reduced by the fact that the concave portions of the uneven surface provided on the surface of the first matting layer 61b are further filled with the first colored layer 61a. Become. On the other hand, as shown in FIG. 6, by forming these layers on the front surface of the sheet 50 and the back surface of the dial 14 and facing each other, the surface of each matt layer maintains unevenness, and light diffusion The effect does not decrease. Then, by forming the first matte layer 61 b on the back surface of the dial 14, it is possible to form a concavo-convex pattern of a glossy surface on the surface of the dial 10 as shown in FIG. 10.

  FIG. 7 is a partial cross-sectional view showing a region where the solar cell 30 and the patch antenna 20 are adjacent to each other in the satellite radio-controlled watch 1 according to the third modification. In the third modification, a colored layer 63 is provided on the back surface of the dial 14, and a transparent matte layer 64 is provided on the surface of the sheet 50. The colored layer 63 is a colored transparent layer, and may be a coating film having such a thickness and color as to transmit light. In the third modification, the transmittance of light incident from the dial 14 side can be adjusted by the thickness and color of the colored layer 63. Therefore, it is possible to adjust the color of the light receiving surface of the solar cell 30 and the lightness of the color of the shielding member 40 visually recognized on the dial 14 side by the thickness and color of the colored layer 63. Further, the transparent matte layer 64 can irregularly diffuse the light incident from the dial 14 side and the light reflected by the light receiving surface of the solar cell 30 and returned to the dial 14 side uniformly. Therefore, the visibility of the boundary between the placement area and the non-placement area is reduced. The transparent matte layer 64 may be provided on the back surface of the dial 14 and the colored layer 63 may be provided on the surface of the sheet 50, or the colored layer 63 may be provided on the surface of the sheet 50. An eraser layer 64 may be provided.

  FIG. 8 is a partial cross-sectional view showing a region where the solar cell 30 and the patch antenna 20 are adjacent to each other in the satellite radio-controlled watch 1 according to the fourth modification. In the fourth modification, a matte surface 65 is provided on the surface of the colored sheet 51. The matte surface 65 is constituted by a rough surface in which fine asperities are formed directly on the surface of the colored sheet 51. By the colored sheet 51 having a thickness, the matte surface 65 is provided apart from the light receiving surface of the solar cell 30. The matte surface 65 is an uneven surface, and irregularly diffuses light incident from the dial 14 side and light returning from the light receiving surface of the solar cell 30 and returning to the dial 14 side. Therefore, the visibility of the boundary between the placement area and the non-placement area is reduced. The colored sheet 51 is a sheet formed of a colored and transparent material, and the transmittance thereof is lower than that of the dial 14. In the fourth modification, the transmittance of light incident from the dial 14 side can be adjusted by the thickness and color of the colored sheet 51. Therefore, it is possible to adjust the color of the light receiving surface of the solar cell 30 and the lightness of the color of the shielding member 40 visually recognized on the dial 14 side by the thickness and the color of the colored sheet 51. The matte surface 65 may be formed of the matte layer shown in FIG.

  FIG. 9 is a partial cross-sectional view showing a region where the solar cell 30 and the patch antenna 20 are adjacent to each other in the satellite radio-controlled watch 1 according to the fifth modification. The thickness of the dial 14 in the fifth modification is w1, and the thickness of the sheet 50 is w2. Here, w 1 <w 2, and the sheet 50 according to the fifth modification is thicker than the dial 14. Generally, the total thickness of the parts that can be placed inside the watch's torso is limited by the thickness of the torso. Then, most of the space inside the trunk is occupied by the movement, the storage battery, the patch antenna, the receiving circuit, and the like. As a result, the total thickness of the dial 14 and the sheet 50 may be limited to about several hundred μm. Here, the light incident from the dial 14 side is reflected by the light receiving surface of the solar cell 30 and returned to the dial 14 side, and the light reflected from the surface of the shielding member 40 is returned to the dial 14 side more strongly In order to cause this, it is necessary to increase the distance from the uneven surface of the matte layer 60 to the light receiving surface of the solar cell 30. In the fifth example, by making the thickness of the sheet 50 thicker than the thickness of the dial 14, the distance from the matte layer 60 to the light receiving surface of the solar cell 30 can be increased. Thereby, even when the total thickness (approximately w1 + w2) of the dial 14 and the sheet 50 is limited to a predetermined value, the visibility of the boundary between the arrangement area and the non-arrangement area is reduced.

  The matte layer 60 or the like may be formed of a layer containing fine particles that reflect or refract light. For example, a layer containing spherical transparent fine particles can be used as the matting layer 60. Even in such a case, light incident from the dial 14 side is scattered irregularly uniformly by the matte layer 60 or the like, light reflected by the light receiving surface of the solar cell 30 and returned to the dial 14 side, The light reflected by the surface of the shielding member 40 and returned to the dial 14 side is also scattered irregularly uniformly by the matte layer 60 and the like. Regardless of the configuration of the matte layer 60 or the like, the visibility of the boundary between the placement area and the non-place area decreases if the incident light is uniformly scattered irregularly.

  FIG. 10 is a plan view showing a satellite radio wave watch 1 according to a sixth modification. On the surface of the dial 14 according to the sixth modification, a concavo-convex pattern 70 radially extending about the rotation axis of the pointer is formed. A part of the concavo-convex pattern 70 is formed along the boundary between the region where the solar cell 30 is present and the region where the solar cell 30 is not present in plan view. In the satellite radio controlled watch 1 according to the sixth modification, a decorative member 80 is provided on the dial 14. The decorative member 80 may be directly attached to the dial 14 or may be fixed by being pinched by the body 10 together with the dial 14. The decorative member pattern 82 is provided on the decorative member 80 so as to overlap the radiation centered on the rotation axis of the pointer. A part of the decorative member pattern 82 is formed along a line extending the boundary between the area where the solar cell 30 is present and the area where the solar cell 30 is not present in plan view.

  The uneven pattern 70 is formed along the boundary between the area where the solar cell 30 is present and the area where the solar cell 30 does not exist in plan view, so that it is difficult to visually recognize the difference between the color of the arrangement area and the color of the non-arrangement area. The illusion effect of In particular, among the concavo-convex pattern 70 in this example, the pattern extending in the 10 o'clock direction from the rotational axis of the pointer and the pattern extending in the 2 o'clock direction from the rotational axis of the pointer are the arrangement area and the non-arrangement area in plan view. Overlap the border. Such a pattern covers the boundary between the shielding member 40 and the solar cell 30, and provides the largest illusion effect that makes the color difference between the shielding member 40 and the solar cell 30 small. In addition, the space | interval which forms the uneven | corrugated pattern 70 may differ from the example shown in FIG. When the notch 30c of the solar cell 30 has a shape other than a fan shape, a concavo-convex pattern may be formed on the surface of the dial 14 along the shape. In addition, unlike the matte layer 60, it is preferable that the uneven pattern 70 be formed on the glossy surface on the front side of the dial 14 that easily reflects light. In that case, a line of light is visually recognized in a radial manner, and an illusion effect of causing the difference in color between the shielding member 40 and the solar cell 30 to be visually recognized small is exhibited.

  The decorative member pattern 82 is formed so as to overlap the extension of the boundary between the area where the solar cell 30 is present and the area where the solar cell 30 is not present in plan view. The illusion effect of making it hard to visually recognize the difference. In particular, among the decorative member patterns 82 in the present example, the pattern formed in the 10 o'clock direction and the pattern formed in the 2 o'clock direction exert a large illusion effect. Further, when the decorative member pattern 82 is formed to overlap with the extension line of the concavo-convex pattern 70 formed on the surface of the dial 14, a stronger illusion effect is exhibited. Since the concavo-convex pattern 70 and the decorative member pattern 82 are visually recognized as a single line covering the boundary between the shielding member 40 and the solar cell 30, the color difference between the shielding member 40 and the solar cell 30 is smaller It is. The decorative member pattern 82 may be formed by a three-dimensional shape. For example, periodic steps may be provided in the circumferential direction of the decorative member 80 to form a pattern.

  Also, if the decorative member 80 is not provided on the dial 14 and the solar cell 30 is located near the inner periphery of the bezel and the solar cell 30 and the bezel are close to each other, similar to the decorative member pattern 82 on the surface of the bezel A pattern may be provided to make the bezel a decorative member, and the difference in color between the shielding member 40 and the solar cell 30 may be visually recognized small. Furthermore, a decorative member 80 may be provided on the dial 14 and a pattern similar to the decorative member pattern 82 may be provided on the surface of the bezel. In that case, both the decorative member pattern 82 and the pattern provided on the surface of the bezel are formed to overlap the extension of the boundary between the area where the solar cell 30 is present and the area where the solar cell 30 is not present. It is desirable to make the color difference between

  The notch part 30c of the solar cell 30 which concerns on this embodiment is fan-shaped, as shown in FIG. 2, and the angle which the notch part 30c makes is 120 degrees as an example. In the state where the solar cell 30 is disposed inside the shell 10, the sides of the notch 30c extend in the 10 o'clock direction and the 2 o'clock direction. Therefore, for example, when placing the satellite radio watch 1 in a catalog or displaying it at a storefront, the hour hand 15 and the minute hand 16 can be set by, for example, aligning the pointer to the position of 10:09:35 as shown in FIG. Can be superimposed on the boundary between the area where the solar cell 30 is present and the area where the solar cell 30 is not present. Therefore, in the display state, a pointer can be superimposed on the boundary between the shielding member 40 and the solar cell 30, and it is possible to make it difficult to visually recognize the color difference between the arrangement area and the non-arrangement area. Generally, the watch has a notch 30c centered on the 12 o'clock position, since the watch is often listed or exhibited in the catalog at a position where the hands of the watch indicate around 10:08 to 9 minutes. By forming an angle of about 120 °, it is possible to make it difficult to visually recognize the difference between the color of the arrangement area and the color of the non-arrangement area.

  1 satellite radio-controlled wristwatch, 10 body, 11 band fixed parts, 12 buttons, 13 crowns, 14 dials, 15 hour hand, 16 hour hand, 17 second hand, 20 patch antenna, 20a receiving surface, 30 solar cells, 30a cell, 30b substrate, DESCRIPTION OF SYMBOLS 30c Notch part, 40 shielding member, 50 sheet, 51 colored sheet, 60 matte layer, 61 1st matte layer, 61a 1st colored layer, 61b 1st matte layer, 62 2nd matte layer, 62a 2 colored layer, 62b second matting layer, 63 colored layer, 64 transparent matting layer, 65 matting surface, 70 concavo-convex pattern, 80 decorative member, 82 decorative member pattern.

Claims (6)

With the dial,
And a solar cell disposed on a part of the back side of the dial.
The dial has an uneven pattern on the surface,
A sheet disposed between the dial and the solar cell;
A colored matte surface or a matte layer provided between the dial and the sheet and covering an area where the solar cell is present and an area where the solar cell is absent in plan view;
And have
A watch with a solar cell , wherein the color of the matte surface or the matte layer is darker than the color of the solar cell. With the dial,
And a solar cell disposed on a part of the back side of the dial.
The dial has an uneven pattern on the surface,
It further has a shielding member which covers an area where at least the solar cell is not disposed in plan view,
A watch with a solar cell , wherein the color of the shielding member is darker than the color of the light receiving surface of the solar cell. With the dial,
And a solar cell disposed on a part of the back side of the dial.
The dial has an uneven pattern on the surface,
A solar cell watch , further comprising a decorative member having a pattern or a shape along a line extending the boundary between the region where the solar cell is present and the region where the solar cell is not present in plan view . With the dial,
And a solar cell disposed on a part of the back side of the dial.
The dial has an uneven pattern on the surface,
In a planar view, the solar battery-equipped watch is a region in which the solar cell is not present, and is shaped so as to fan out the direction from 10 o'clock to 2 o'clock . With the dial,
And a solar cell disposed on a part of the back side of the dial.
The dial has an uneven pattern on the surface,
The dial has a colored layer on the back side,
A sheet disposed between the dial and the solar cell;
A watch with a solar cell , comprising: a matte surface or a matte layer provided between the dial and the sheet and covering a region in which the solar cell is present and a region in which the solar cell is not present in plan view . With the dial,
And a solar cell disposed on a part of the back side of the dial.
The dial has an uneven pattern on the surface,
A colored sheet disposed between the dial and the solar cell;
A watch with a solar cell , comprising: a matte surface or a matte layer provided between the dial and the sheet and covering a region in which the solar cell is present and a region in which the solar cell is not present in plan view .

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