Solar timepiece

Abstract

A solar-powered clock features a dial with excellent assemblability, light transmission, and design. The clock has a dial above a solar cell, with a decorative component above the dial. The dial includes a sub-dial, and a semi-transparent reflector is positioned between the solar cell and the dial. The semi-transparent reflector has: a first region selectively disposed on a portion overlapping the sub-dial; a second region disposed on a portion overlapping the outer periphery of the dial; and a third region connecting the first and second regions, the third region being selectively disposed on a portion overlapping the decorative component.

Description

TECHNICAL FIELD

[0001] The present application relates to a solar watch. BACKGROUND

[0002] A solar watch having a solar cell below a dial is known. For example, Patent Literature 1 discloses a solar watch in which a semi-transmissive reflection plate and a transmissive dial are overlaid on a solar cell, the transmissive dial has a prism on a lower surface. According to this document, without hindering power generation of the solar cell, a deep purple color tone of the solar cell disappears, further, a white color appears on the transmissive dial, and display of the dial of the watch looks bright and clear. In addition, according to the document, it is possible to change the color tone of the dial in a manner such as a color tone of the dial being changed to a color tone of the semi-transmissive reflection plate, and a color tone of the dial being changed to a color tone of the prism. Figure 1 It is presumed that the solar watch is an analog watch of 3 hands.

[0003] On the other hand, a multi-axis watch having a sub-dial in a main dial displaying time like a chronograph watch is also known, the sub-dial has a chronograph minute hand and a chronograph hour hand. In such a multi-axis watch, a plurality of small circular sub-dials are arranged in a circular main dial. In the multi-axis watch, in order to improve design, there is a demand to selectively change a color tone of the sub-dial.

[0004] Patent Literature 1: Japanese Patent Application Publication No. 2011-174948

[0005] Here, in order to improve design of the multi-axis watch, it is considered to provide a semi-transmissive reflection plate only on the sub-dial, but there is no description and suggestion about the sub-dial in Patent Literature 1. In addition, it is also considered to adhere a semi-transmissive reflection plate only on the sub-dial portion, but it is likely that an adhesive or a double-sided tape or the like joining member is observed, and the appearance is deteriorated. In addition, in the case where a plurality of sub-dials are provided, it is necessary to adhere a semi-transmissive reflection plate respectively, and the assembly is not good.

[0006] That is, there is a demand for a solar watch having a dial excellent in assembly and light transmittance, and design. SUMMARY

[0007] A solar watch of one embodiment of the present application has a dial above a solar cell, in which a decorative member is provided above the dial, the dial has a sub-dial, a semi-transmissive reflection plate is provided between the solar cell and the dial, the semi-transmissive reflection plate has a first region selectively provided in a portion overlapping with the sub-dial, a second region provided in a portion overlapping with an outer periphery of the dial, and a third region connecting the first region and the second region, the third region is selectively provided in a portion overlapping with the decorative member. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1This is the front view of the clock according to Embodiment 1.

[0009] Figure 2 It is an exploded 3D view of the area surrounding the dial.

[0010] Figure 3 yes Figure 1 A sectional view of section bb.

[0011] Figure 4 This is a top view of the scale ring.

[0012] Figure 5 This is a top view of the dial.

[0013] Figure 6 yes Figure 5 A sectional view of the cc section.

[0014] Figure 7 It is a top view of the semi-transparent reflector.

[0015] Figure 8 This is a photograph of an embodiment of the clock.

[0016] Figure 9 This is a top view of the semi-transparent reflector in embodiment 2.

[0017] Figure 10 These are top views of semi-transparent reflectors in different ways.

[0018] Figure 11 This is an exploded perspective view of the dial in embodiment 3.

[0019] Figure 12 This is a detailed diagram of the semi-transparent reflector in embodiment 4.

[0020] Label Explanation

[0021] 2-second hand; 3-minute hand; 4-hour hand; 5-day hand; 6-minute hand; 7-hour hand; 8-indicator hand; 9-AMPM hand; 9a, 9b operation buttons; 20 semi-transparent reflector; 21-23 island-shaped section; 25 circular section; 27, 28 semi-transparent reflector; 30 base plate; 31-33 sub-dials; 31d-33d openings; 35a, 35c, 35d holes; 36a, 36b, 36c holes; 37a, 37b, 37c holes; 38a, 38b 38c hole; 39a, 39b, 39c holes; 40 scale ring; 41 circular ring; 43 hour markers; 43a fixing pin; 50 dial; 55 second dial; 58 dial; 60 outer glass bezel; 61 crown; 62 date window; 62a, 62c, 62d square holes; 63 windshield; 65 case; 71-73 secondary scale rings; 75a protrusion; 75b protrusion; 77 movement; 81-85 connecting parts; 90 solar cell; 100 watch. Detailed Implementation

[0022] Implementation Method 1

[0023] ***Overview of Clocks***

[0024] Figure 1 This is the front view of the clock.

[0025] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0026] like Figure 1 As shown, clock 100 is a multi-axis solar-powered analog clock. It has three sub-dials (31, 32, and 33) within a dial 50 with a second hand (2), a minute hand (3), and an hour hand (4). A solar panel is located on the back of dial 50. Dial 50 is also referred to as the main dial. Dial 50 is circular and surrounded by a scale ring 40. A crown 61 is located at the 3 o'clock position. An operation button 9a is located at the 2 o'clock position, and an operation button 9b is located at the 4 o'clock position. Various functions of clock 100 are performed by operating the crown 61 and the operation buttons 9a and 9b. Furthermore, the direction in which the user observes the dial is upward, and the direction in which the clock 100 contacts the user's wrist is downward.

[0027] A sub-dial 31 is located on the 3 o'clock side of the dial 50. The sub-dial 31 is a day counter with a day hand 5 indicating the day of the week.

[0028] A sub-dial 32 is located on the 6 o'clock side of the dial 50. The sub-dial 32 is a small clock with a 12-hour time display, featuring a minute hand (6) and an hour hand (7).

[0029] A smaller sub-dial 34 is disposed between sub-dial 31 and sub-dial 32. Sub-dial 34 has an AM / PM hand 9, which indicates whether the time shown on sub-dial 32 is AM or PM. Sub-dial 34 is substantially integrated with sub-dial 31 and is configured as part of sub-dial 31.

[0030] A date window 62, displaying the date, is located at the 4:30 position on the dial 50.

[0031] A sub-dial 33 is located at the 9 o'clock position on the main dial 50. Sub-dial 33 is an indicator showing various states such as remaining power, and includes an indicator hand 8. Furthermore, the functions assigned to sub-dials 31, 32, and 33 are not limited to those mentioned above; for example, they could be a seconds counter, a chronograph, or a 24-hour clock. Additionally, the number of sub-dials is not limited to three; having one or more sub-dials is sufficient.

[0032] ***Dial Structure***

[0033] Figure 2It is an exploded 3D view of the area surrounding the dial. Figure 3 yes Figure 1 A sectional view of the bb section. Here, the structure of the dial 50 and its surrounding parts is explained.

[0034] like Figure 3 As shown, the internal structure of the clock 100 employs the following configuration: a solar cell 90, a semi-transparent reflector 20, a dial 50, and a scale ring 40 are stacked above the movement 77. Figure 2 As shown, the dial 50 has three small circular sub-dials 31, 32, and 33 on a circular, light-transmitting substrate 30.

[0035] In a preferred embodiment, the substrate 30 is a transparent plate injection molded from polycarbonate resin. However, the material is not limited to this; any light-transmitting resin can be used for the substrate 30, such as acrylic resin or polystyrene resin. Furthermore, the substrate 30 can be colored to be transparent. As a transparent color, a light-transmitting colored color can be applied to the resin material, or a transparent coating or layer can be applied to the transparent substrate 30. This improves the design flexibility of the dial 50. For example, if a light black color coating is applied to the main dial (excluding the sub-dial), the color (dark purple) of the solar cell 90 can be made less noticeable. In this case, the sub-dial is not coated, so the transparent substrate 30 is exposed.

[0036] That is, the sub-dial is designed in a light color, while the main dial (excluding the sub-dial) is designed in a dark color. Light colors refer to colors that are easily visible through the solar cell 90 located below the dial 50, such as transparent or white. Dark colors refer to colors that are difficult to see through the solar cell 90 located below the dial 50, such as black or purple.

[0037] The scale ring 40 is composed of an annular portion 41 that overlaps with the outer periphery of the substrate 30 and a plurality of hour markers 43 disposed on the inner side of the annular portion 41. Figure 3 As shown, the hour markers 43, which are decorative components, are fixed to the ring portion 41 by two fixing pins 43a.

[0038] Additionally, the outer perimeter of the scale ring 40 is surrounded by a glass outer ring 60. A windshield 63 is embedded in the glass outer ring 60. The glass outer ring 60 is a cover, combined with a housing 65 made of a hard metal such as stainless steel. The housing 65 is the housing of the watch 100, which houses the movement 77, solar cell 90, semi-transparent reflector 20, dial 50, etc.

[0039] Figure 4 This is a top view of the scale ring.

[0040] likeFigure 4 As shown, the hour markers 43 are arranged one by one at the positions from 1 o'clock to 12 o'clock. The hour markers 43 are rectangular in shape and protrude inwards from the inner side of the ring portion 41. In addition, minute markings are printed on the ring portion 41.

[0041] Figure 5 This is a top view of the dial. Figure 6 yes Figure 5 A sectional view of the cc section.

[0042] like Figure 5 As shown, the base plate 30 of the dial 50 has multiple insertion holes for the shafts of the hands to pass through. Specifically, a hole 35a is provided in the center of the base plate 30 for the shafts of the second hand 2, minute hand 3, and hour hand 4 to pass through. A hole 36a is provided in the center of the sub-dial 31 for the shaft of the day hand 5 to pass through. Similarly, a hole 37a is provided in the center of the sub-dial 32 for the shafts of the minute hand 6 and hour hand 7 to pass through, and a hole 38a is provided in the center of the sub-dial 33 for the shaft of the indicator hand 8 to pass through. A hole 39a is provided in the center of the sub-dial 34 for the shaft of the AMPM hand 9 to pass through. Additionally, a square hole 62a corresponding to the date window 62 is also provided on the base plate 30.

[0043] A secondary scale ring 73 is provided on the outer periphery of the secondary dial 33. For example... Figure 6 As shown, the sub-scale ring 73 is a ring-shaped component that is inserted and fixed to the substrate 30 by a retaining pin 73a. The surface of the sub-scale ring 73 is printed with scales and text for indicator display. Due to the presence of the sub-scale ring 73, the sub-dial 33 appears three-dimensional. Furthermore, the surface of the sub-dial 33 is positioned one level lower than the reference surface of the substrate 30. This is to make the sub-dial 33, including the sub-scale ring 73, appear more three-dimensional.

[0044] Similarly, a sub-scale ring 71 is provided on the outer periphery of the sub-dial 31, and a sub-scale ring 72 is provided on the outer periphery of the sub-dial 32. The surface of the sub-dial 71 is printed with text indicating the day of the week. The surface of the sub-scale ring 72 is printed with minute and hour markings.

[0045] Multiple positioning protrusions 75a are provided on the outer periphery of the substrate 30. The protrusions 75a are arranged in pairs of two. Each pair of protrusions 75a determines the position of the dial 50 in the direction of rotation, and a positioning pin (not shown) located in the movement 77 is positioned by being fitted between the two protrusions. The pairs of protrusions 75a are located near 12 o'clock, 2:30, 5:30, and 7:30.

[0046] In addition, Figure 5In the diagram, the outline of the scale ring 40 is shown in dashed lines. The inner circumference of the annular portion 41 of the scale ring 40 is set to be one size smaller than the outer circumference of the base plate 30 of the dial 50. In other words, a portion of the annular portion 41 of the scale ring 40 covers the outer periphery of the dial 50.

[0047] ***Structure of a Semi-transparent Reflector***

[0048] Figure 7 It is a top view of the semi-transparent reflector.

[0049] like Figure 7 As shown, the semi-transparent reflector 20 is composed of an annular portion 25 overlapping with the annular portion 41 of the scale ring 40, three island-shaped portions 21, 22, and 23 disposed inside the annular portion 25, and connecting portions 81, 82, and 83 connecting the annular portion 25 and the island-shaped portions. Furthermore, the island-shaped portions 21, 22, and 23 correspond to the first region, and the annular portion 25 corresponds to the second region.

[0050] like Figure 2 As shown, island-shaped portions 21 are selectively disposed on the portions of the dial 50 that overlap with sub-dials 31 and 34. Similarly, island-shaped portions 22 are selectively disposed on the portions of the dial 50 that overlap with sub-dials 32. Island-shaped portions 23 are selectively disposed on the portions of the dial 50 that overlap with sub-dials 33.

[0051] Furthermore, island sections 21, 22, and 23, similar to the base plate 30 of the dial 50, are provided with universal insertion holes for the pointer shaft to pass through. Island section 21 has holes 36b and 39b corresponding to holes 36a and 39a of the dial 50. Island section 22 has a hole 37b corresponding to hole 37a of the dial 50. Island section 23 has a hole 38b corresponding to hole 38a of the dial 50. Additionally, universal insertion holes for the pointer shaft to pass through are also provided on the solar cell 90. The solar cell 90 has holes 35c, 36c, 37c, 38c, and 39c corresponding to holes 35a, 36a, 37a, 38a, and 39a of the dial 50. Furthermore, the solar cell 90 also has a square hole 62c corresponding to the square hole 62a of the dial 50.

[0052] return Figure 7 .exist Figure 7 In the middle, the outline of the scale ring 40 is shown with dashed lines.

[0053] The connecting portion 81 is a rod-shaped connecting part connecting the island-shaped portion 21 and the ring portion 25, and is located at a position overlapping with the hour marker 43 at the 3 o'clock position of the scale ring 40. Similarly, the connecting portion 82 connecting the island-shaped portion 22 and the ring portion 25 is located at a position overlapping with the hour marker 43 at the 6 o'clock position of the scale ring 40. The connecting portion 83 connecting the island-shaped portion 23 and the ring portion 25 is located at a position overlapping with the hour marker 43 at the 9 o'clock position of the scale ring 40. In other words, the connecting portions 81, 82, and 83 are selectively located at positions overlapping with the hour marker 43, which serves as decorative elements. Therefore, when the clock 100 is viewed from the front, the connecting portions 81, 82, and 83 are hidden by the decorative elements. Furthermore, the decorative elements are not limited to the hour marker 43; they can be any part of the dial 50, such as simple characters, rings, logos, stars, or other design elements.

[0054] Additionally, around the outer periphery of the annular portion 25, similar to the dial 50, there are multiple outwardly protruding positioning protrusions 75b. Two protrusions of each of the protrusions 75b are arranged in pairs, overlapping with the protrusions 75a of the dial 50. The pairs of protrusions 75b are similarly positioned near the 12 o'clock, 2:30, 5:30, and 7:30 o'clock locations. Furthermore, the protrusions 75b correspond to a fifth region.

[0055] In other words, the translucent reflector 20 has: island-shaped portions 21, 22, and 23, selectively disposed in portions overlapping with the sub-dials 31, 32, and 33, forming a first region; an annular portion 25, disposed in portions overlapping with the outer periphery of the dial 50, forming a second region; and connecting portions 81, 82, and 83, connecting the first and second regions, forming a third region. The connecting portions 81, 82, and 83 are selectively disposed in portions overlapping with the hour markers 43, which are decorative elements. Furthermore, the translucent reflector 20 also has a protrusion 75b, protruding outward from the annular portion 25, forming a fifth region.

[0056] In a preferred embodiment, the semi-transparent reflector 20 is made of a reflective polarizer that has both light transmission and light reflection functions. The semi-transparent reflector 20 is cut from a large sheet of reflective polarizer using a blade cutter such as a Thomson type. Figure 7 It is formed by the shape of.

[0057] Reflective polarizers allow the required amount of light to pass through, thus enabling the solar cell to transmit 90% of its light. Figure 2It has the functions of generating electricity and reflecting a certain amount of light to brighten the dial. For example, a reflective polarizing film can be described using the trade name DBEF (Dual Brightness Enhancement Film) (registered trademark) manufactured by Sumitomo 3M. Reflective polarizing films include those that produce a glossy silver color when reflected light, and those that produce a gold color. If a silver polarizing film is used, a white metallic color will be displayed. (Further details will follow.) Figure 8 In this example, a silver polarizing plate is used as a preferred option, but the choice of the two colors can be made appropriately according to the design and other factors.

[0058] Furthermore, the material of the semi-transparent reflector 20 is not limited to a reflective polarizing plate; any thin plate material that has both light transmission and light reflection functions can be used. For example, a transmissive metal film or coating film can be applied to a transparent resin sheet or resin plate, or a brightness-enhancing film such as a prism sheet can be used. Alternatively, a thin plate with multiple small holes can also be used.

[0059] ***Dial Assembly ***

[0060] return Figure 2 .

[0061] When assembling the dial 50, scale ring 40, etc., the solar cell 90 is installed into the movement 77. Figure 3 In the state of ), such as Figure 2 As shown, a semi-transparent reflector 20, a dial 50, and a scale ring 40 are sequentially stacked above the solar cell 90.

[0062] At this point, the three island-shaped portions 21, 22, and 23 corresponding to the sub-dial and the annular portion 25 are integrated, so the semi-transparent reflector 20 can be placed above the solar cell 90 in a single operation, resulting in good assembly. Furthermore, the connecting portions 81, 82, and 83 are positioned overlapping with the hour markers 43, so they are not visible. Therefore, the semi-transparent reflector 20 is not visible in the appearance and does not detract from the aesthetics.

[0063] Figure 8 This is a photograph of an embodiment of a clock equipped with a semi-transparent reflector.

[0064] Figure 8 A photograph is shown of a clock 100 having the aforementioned semi-transparent reflector 20 (example). The semi-transparent reflector 20 uses a silver reflector, and the dial 50 uses a light-colored material with a white translucent coating.

[0065] like Figure 8As shown, the clock 100 has a deep purple base portion on the dial 50, with three sub-dials appearing as metallic silver. The deep purple of the dial 50 depends on the hue of the solar cell 90. The silver color of the sub-dials is primarily due to the dispersion and diffusion of reflected light from the semi-transparent reflector 20. Similar to the dial 50, the sub-dials also contain reflected light from the solar cell 90; however, most of this reflected light is reflected again by the semi-transparent reflector 20 and then incident on the solar cell 90. Therefore, the hue of the solar cell 90 has a minimal impact.

[0066] Thus, with the clock 100 having the semi-transparent reflector 20, the sub-dial can be made more prominent relative to the base portion of the main dial 50, enhancing the design. Alternatively, the semi-transparent reflector 20 can be placed in a location other than the sub-dial. For example, if a star-shaped semi-transparent reflector is placed on the base portion of the main dial 50, a shimmering silver star shape can be created.

[0067] As described above, the clock 100 according to this embodiment can achieve the following effects.

[0068] The clock 100 is a solar-powered clock with a dial 50 above a solar cell 90. Hour markers 43, serving as decorative elements, are provided above the dial 50. The dial 50 has sub-dials 31, 32, and 33. A semi-transparent reflector 20 is provided between the solar cell 90 and the dial 50. The semi-transparent reflector 20 has: island-shaped portions 21, 22, and 23 selectively disposed on portions overlapping with the sub-dials 31, 32, and 33, forming a first region; an annular portion 25 disposed on portions overlapping with the outer periphery of the dial 50, forming a second region; and connecting portions 81, 82, and 83 connecting the first and second regions, forming a third region. The connecting portions 81, 82, and 83 are selectively disposed on portions overlapping with the hour markers 43, which serve as decorative elements.

[0069] Therefore, in a dial design where the sub-dials 31, 32, and 33 are light-colored and the main dial (excluding the sub-dials) is dark-colored, a semi-transparent reflector 20 is positioned where it overlaps with the sub-dials. This prevents the color of the solar cell 90 from passing through the sub-dials. Furthermore, the semi-transparent reflector 20 is integrated by selectively placing it in a first region, a second peripheral region, and a third region connecting the two regions where it overlaps with the sub-dials 31, 32, and 33, resulting in good assembly. Moreover, the connecting portions 81, 82, and 83, which are part of the third region, are selectively positioned where they overlap with the hour markers 43 (which are decorative elements), thus not affecting the appearance and aesthetics. Furthermore, since the semi-transparent reflector 20 is not placed in the portion of the main dial (excluding the sub-dials), the light transmittance is higher than in the sub-dials, allowing a larger amount of external light to enter the solar cell 90, thereby improving power generation efficiency.

[0070] Therefore, a watch 100 can be provided with a dial 50 that has good assembly and light transmission and excellent design.

[0071] In addition, decorative elements are simplified characters, rings, or logos containing the hour marker 43.

[0072] Therefore, a third region (connection part) can be set at the position where it overlaps with these decorative parts, depending on the design.

[0073] In addition, the semi-transparent reflector 20 also has a protrusion 75b that protrudes outward from the annular portion 25, which is the second region, and is the fifth region. The protrusion 75b is positioned to overlap with the protrusion 75a of the dial 50.

[0074] Therefore, the semi-transparent reflector 20 and the dial 50 can be positioned appropriately.

[0075] Implementation Method 2

[0076] ***Different Structures of Semi-transmissive Reflectors***

[0077] Figure 9 This is a top view of the semi-transparent reflector in embodiment 2, and... Figure 7 correspond.

[0078] In the above embodiment, it was described that the three island-shaped portions 21, 22, and 23 in the semi-transparent reflector 20 are connected to the annular portion 25, but the structure is not limited to this; they can be connected at any position overlapping with the decorative component. For example, in the semi-transparent reflector 27 of this embodiment, the island-shaped portions 21 and 23 are not connected to the annular portion 25, but are connected to the island-shaped portion 22. Hereinafter, the same reference numerals will be used for the same parts as in the above embodiment, and repeated descriptions will be omitted.

[0079] like Figure 9 As shown, in the semi-transparent reflector 27, the annular portion 25 and the island portion 22 are connected by a connecting portion 82, but the island portions 21 and 23 are not connected to the annular portion 25.

[0080] Island section 21 is connected to island section 22 via connecting section 84, which serves as the fourth region. Island section 21 and island section 22 are close to each other, and connecting section 84 traverses the sub-scale ring 72. Figure 2 Therefore, the portion overlapping with the ring will not be visible. Island 23 is connected to island 22 via connecting portion 85, which serves as the fourth region. Island 23 and island 22 are close together, and connecting portion 85 traverses the sub-scale rings 72 and 73. Figure 2 Therefore, the portion that overlaps with the ring will not appear in the appearance.

[0081] Furthermore, since the island portions 21 and 23 are connected to the annular portion 25 via the island portion 22 and thus integrated, the semi-transparent reflector 27 can be treated as a single component, and its assemblability is also good.

[0082] In other words, the semi-transparent reflector 27 has island-shaped portions 21, 22, and 23 as the first region, and connecting portions 84 and 85 as the fourth region that connect the first regions to each other.

[0083] Figure 10 These are top views of semi-transparent reflectors in different configurations, and... Figure 9 correspond.

[0084] In the semi-transparent reflector 28 of different types, the three island-shaped portions 21, 22, and 23 each have a connecting portion to the annular portion 25 and a connecting portion that connects the island-shaped portions to each other. Specifically, island-shaped portion 21 has a connecting portion 84 connecting to island-shaped portion 22 and a connecting portion 81 connecting to the annular portion 25. Island-shaped portion 23 has a connecting portion 85 connecting to island-shaped portion 22 and a connecting portion 83 connecting to the annular portion 25. Otherwise, its structure is the same as that of the semi-transparent reflector 28. Therefore, the annular portion 25 and the three island-shaped portions 21, 22, and 23 are more tightly connected, thus increasing the integrality of the components and simplifying assembly.

[0085] Alternatively, the semi-transparent reflector 28 can also be obtained by cutting off a portion of the annular portion 25. Specifically, in... Figure 10 Alternatively, the annular portion 25 within the range indicated by arrow q can be removed. Even if this portion is omitted, the annular portion 25 is reliably connected to the island portions 21 and 23 via connecting portions 81 and 83, thus ensuring the integrity of the component and not compromising assemblability. Furthermore, there are three pairs of positioning protrusions 75b, providing sufficient positioning and anti-rotation functionality. This structure allows for a reduction in the size of the semi-transparent reflector 28, thereby increasing the number of sheets that can be cut from a large sheet and reducing component costs.

[0086] As described above, the clock 100 according to this embodiment can achieve the following effects in addition to the effects described in the above embodiment.

[0087] The semi-transparent reflectors 27 and 28 have island-shaped portions 21, 22, and 23 as the first region, and connecting portions 84 and 85 as the fourth region that connect the first regions to each other. In addition, the semi-transparent reflector 28 has connecting portions 81 and 83 that connect to the annular portion 25, in addition to the connecting portions 84 and 85.

[0088] As a result, the annular portion 25 and the three island portions 21, 22, and 23 are more closely connected, thus increasing the integrity of the components and making assembly easier.

[0089] Therefore, a watch 100 can be provided with a dial 50 that has good assembly and light transmission and excellent design.

[0090] Implementation Method 3

[0091] ***Different structures of the dial***

[0092] Figure 11 This is an exploded perspective view of the dial in embodiment 3, and... Figure 2 correspond.

[0093] In the above embodiments, the case where the dial 50 is a single-piece structure was described, but it is not limited to this structure; for example, it can also be a double-piece structure. The difference between the dial 58 in this embodiment and that in embodiment 1 is that the dial 50 is used as the first dial and a second dial 55 is superimposed on it in a double-piece structure. Hereinafter, the same reference numerals will be used for the same parts as in the above embodiments, and repeated descriptions will be omitted.

[0094] like Figure 11 As shown, in this embodiment, the dial 58 is configured such that a second dial 55 overlaps the dial 50.

[0095] The second dial 55, like the substrate 30 of the dial 50, is a transparent plate-shaped component molded from transparent resin, and has openings 31d, 32d, and 33d corresponding to the three sub-dials. In addition, it is provided with a hole 35d corresponding to the hole 35a of the dial 50 and a square hole 62d corresponding to the square hole 62a of the dial 50.

[0096] Opening 31d corresponds to sub-dial 31 ( Figure 2 The opening 31d is the size of the sub-scale ring 71 exposed. The opening 32d corresponds to the sub-dial 32 and is the size of the sub-scale ring 72 exposed. The openings 31d and 32d are connected to form a figure 8 to become one opening.

[0097] The opening 33d corresponds to the sub-dial 33 and is an opening of the size that exposes the sub-scale ring 73.

[0098] In addition, in the preferred embodiment, a transparent color is applied to the second dial 55.

[0099] In other words, the dial 58 is composed of a dial 50 as the first dial and a dial 55 as the second dial. The second dial 55 overlaps above the dial 50 and has openings 31d, 32d, and 33d. The dial 50 has sub-dials 31, 32, and 33 at positions overlapping with the openings 31d, 32d, and 33d. The semi-transparent reflector 20 is disposed between the solar cell 90 and the dial 50.

[0100] As described above, the clock 100 according to this embodiment can achieve the following effects in addition to the effects described in the above embodiment.

[0101] The dial 58 is composed of a dial 50 as a first dial and a second dial 55. The second dial 55 overlaps the dial 50 and has openings 31d, 32d, and 33d. The dial 50 has sub-dials 31, 32, and 33 at positions overlapping with the openings 31d, 32d, and 33d. A semi-transparent reflector 20 is disposed between the solar cell 90 and the dial 50.

[0102] Therefore, by setting the second dial 55, the appearance of the dial 58 can be made more three-dimensional. Furthermore, by applying a transparent color to the second dial 55, a wider variety of color representations can be achieved.

[0103] Therefore, a watch 100 can be provided with a dial 58 that has good assembly and light transmission and excellent design.

[0104] Implementation Method 4

[0105] ***Different Structures of Semi-transmissive Reflectors***

[0106] Figure 12 This is a detailed drawing of the semi-transparent reflector in embodiment 4. Figure 7 An enlarged view of part f.

[0107] exist Figure 7 In addition, the three island sections 21, 22, and 23 can also be processed to improve the light transmittance. Figure 12 yes Figure 7 An enlarged view of part f in island-shaped part 22.

[0108] like Figure 12 As shown, the island-shaped portion 22 has multiple holes. In a preferred embodiment, these holes are formed by laser processing, and the hole diameter is approximately 100 μm or more and 200 μm or less. However, laser processing is not the only option; any method capable of forming the same holes is acceptable. Furthermore, the other island-shaped portions 21 and 23 also have multiple holes.

[0109] In other words, multiple holes are provided in the island-shaped portions 21, 22, and 23 of the semi-transparent reflector 20, which are the first region.

[0110] As described above, the clock 100 according to this embodiment can achieve the following effects in addition to the effects described in the above embodiment.

[0111] Multiple holes are provided in the island-shaped portions 21, 22, and 23 of the semi-transparent reflector 20, which serve as the first region. In addition, since the holes are tiny, they are not easily observed, do not impair the design, and have almost no impact on the color tone of the solar cell 90.

[0112] This increases the light transmittance in region 1. Consequently, it improves the power generation efficiency of solar cell 90.

[0113] Therefore, a watch 100 can be provided with a dial 50 that has good assembly and light transmission and excellent design.

Claims

1. A solar-powered clock, comprising: Solar cells; The first dial is located above the solar cell and has a through hole for inserting the pointer shaft and a sub-dial. A semi-transparent reflector is disposed between the solar cell and the first dial; and Decorative components, which are positioned on the opposite side of the semi-transparent reflector relative to the first dial, The semi-transparent reflector has: The first region is positioned at a location that overlaps with the sub-dial when viewed from the axial direction along the pointer axis; The second region is positioned where it overlaps with the outer periphery of the first dial when viewed from the axial direction; and The third region, which connects the first region and the second region, is positioned at a location that overlaps with the decorative component when viewed from the axial direction.

2. The solar-powered clock according to claim 1, wherein, The solar-powered clock also has a second dial, which is positioned between the first dial and the decorative component. The second dial overlaps the first dial and has an opening. The sub-dial is positioned to overlap with the opening when viewed from the axial direction.

3. The solar-powered clock according to claim 1 or 2, wherein, The decorative elements are simplified characters, rings, or logos.

4. The solar-powered clock according to claim 1 or 2, wherein, The semi-transparent reflector has a plurality of the first regions and a fourth region connecting the first regions to each other.

5. The solar-powered clock according to claim 1 or 2, wherein, The semi-transparent reflector also has a fifth region that protrudes outward from the second region.

6. The solar-powered clock according to claim 1 or 2, wherein, A plurality of holes are provided in the first region of the semi-transparent reflector.

7. The solar-powered clock according to claim 1 or 2, wherein, In the first dial, the sub-dial is light-colored, and the main dial other than the sub-dial is dark-colored.

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