Electronic instrument, and electronic timepiece

Abstract

To enable making a component member common in a plurality of models while cutting down manufacturing costs.SOLUTION: Timepieces 100 and 200 serving as an electronic instrument comprise: a base 2 that has a first loading part 21 having a principal plane 21a almost annually provided, a second loading part 22 having a principal plane 22a provided inside relative to the first loading part 21 and a protrusion part 221 protruding upward, and an outer periphery side loading part 23 serving as a third loading part provided around the first loading part 21, in which heights of the principal plane 22a of the second loading part 22 and the protrusion part 221 are lower than a principal plane 23a of the outer periphery side loading part 23 serving as the third loading part, and higher than the principal plane 21a of the first loading part 21; and an almost annular day wheel 3 that is small in a thickness dimension than a difference between a height of the protrusion part 221 of the second loading part 22 and the height of the principal plane 23a of the outer periphery side loading part 23 serving as the third loading part, and has at least a part of an inner circumferential side arranged in the second loading part 22.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an electronic device and an electronic timepiece. [Background technology]

[0002] Conventionally, electronic devices such as electronic watches have come in a variety of shapes and functions, and it is not desirable to mount different modules on a wide variety of products, as this increases manufacturing costs. In this regard, Patent Document 1 describes a watch that can accommodate changes to the planar shape or dimensions of the device case or dial by simply changing the shape and dimensions of the support member, without changing the module (referred to as the "internal structure" in Patent Document 1).

[0003] Electronic devices equipped with solar panels (solar cells) that receive light and generate electricity are also known. In this case, there is a demand for solar panels with different shapes and positions depending on the model, due to the need to accommodate the external design of the electronic device and the amount of power generation required for the electronic device, etc. Even in such cases, it is preferable to share parts as much as possible to reduce manufacturing costs. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-013268 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the watch described in Patent Document 1 states that when changing the outer case, dial, etc., it is possible to change only the shape and dimensions of the support member, eliminating the need to change the shape and dimensions of the internal structure, such as the watch movement, on the other hand, Patent Document 1 addresses this by providing an attachment for supporting the member each time, which means that the shape of the support member needs to be finely adjusted for each device (model), which is undesirable in terms of design effort and manufacturing costs.

[0006] The present invention has been made in view of the above circumstances, and has as its object to provide an electronic device and an electronic timepiece that can share components among a plurality of models while keeping manufacturing costs down. [Means for solving the problem]

[0007] In order to solve the above problems, the electronic device according to the present invention comprises: a base including a first mounting portion having a substantially annular main surface, a second mounting portion provided inside the first mounting portion and having a main surface and a protruding portion protruding upward, and a third mounting portion provided around the first mounting portion, wherein the height of the main surface and the protruding portion of the second mounting portion is lower than the main surface of the third mounting portion and higher than the main surface of the first mounting portion; The date wheel is characterized by having a thickness dimension smaller than the difference between the height of the protruding portion of the second mounting portion and the height of the main surface of the third mounting portion, and is approximately annular, with at least a portion of its inner circumference being positioned on the second mounting portion. [Effects of the Invention]

[0008] According to the present invention, it is possible to standardize components among a plurality of models while suppressing manufacturing costs. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an exploded oblique view of the main parts of a timepiece of the "first model" according to an embodiment. [Figure 2] This is a side cross-sectional view of the main parts of the "first model" watch. [Figure 3]This is a cross-sectional oblique view of the main parts of the "first model" watch. [Figure 4] FIG. 1 is an exploded oblique view of the main parts of a timepiece of the "second model" according to an embodiment. [Figure 5] This is a side cross-sectional view of the main parts of the "second model" watch. [Figure 6] This is a cross-sectional oblique view of the main parts of the "second model" watch. [Figure 7] FIG. 2 is a perspective view of the front surface side of the base in the embodiment. [Figure 8] FIG. 8 is an enlarged perspective view of a main part of the base shown in FIG. 7. [Figure 9] FIG. 10 is a perspective view showing a state in which a date indicator and a date indicator holder are assembled to the surface of the base in the embodiment. [Figure 10] FIG. 10 is a perspective view showing a state in which a substantially circular solar panel is mounted on the surface of the base in the state shown in FIG. 9. [Figure 11] FIG. 2 is a perspective view of the rear surface side of the peripheral frame in the embodiment. [Figure 12] 12 is a perspective view of the back surface of the peripheral frame shown in FIG. 11 with a substantially circular solar panel attached to the back surface. FIG. [Figure 13] This is a side cross-sectional view of the main part of the contact area between the solar panel and the circuit board in the ``first model'' watch. [Figure 14] This is a side cross-sectional view of the main part of the contact portion between the solar panel and the circuit board in the ``second model'' watch. [Figure 15] FIG. 10 is a side cross-sectional view of the main part of a conventional timepiece. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of an electronic device and an electronic timepiece according to the present invention will be described with reference to FIGS. It should be noted that the embodiments described below are subject to various limitations that are technically preferable for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples. In this embodiment, an example will be described in which the electronic device is an electronic clock (hereinafter simply referred to as a "clock") that displays the time.

[0011] The timepiece, which is an electronic device in this embodiment, includes at least a base 2, an outer peripheral frame 6, a date wheel 3, etc., and ensures space above and below the date wheel 3 in which solar panels 5 can be installed. This makes it possible to accommodate a plurality of models with different solar panel 5 shapes and arrangement positions, while using a common base 2, peripheral frame 6, etc. In other words, in the embodiment, when realizing a model in which the solar panel 5 is placed above the date wheel 3 (this will be referred to as the "first model" watch 100) and a model in which the solar panel 5 is placed below the date wheel 3 (this will be referred to as the "second model" watch 200), at least the base 2 and the outer frame 6 can be made common.

[0012] In both the "first model" watch 100 and the "second model" watch 200, the various components that make up the watches 100, 200, such as the circuit board 1, base 2, date indicator 3, solar panel 5, and outer frame 6, are assembled into modules and housed in a device case (not shown). The device case is made of, for example, metals such as stainless steel or titanium, ceramics, or various synthetic resins. Note that the materials from which the device case is made are not limited to those exemplified here. The device case is formed in the shape of a hollow short column. The front side of the device case (the viewing side of the watch) of the timepiece 100, 200 is closed by a crystal member (not shown) made of transparent resin, glass, etc. The back side of the device case of the timepiece 100, 200 is closed by a back cover (not shown). A watch band (not shown) is attached to the device case, allowing the watches 100, 200 to be worn on the user's wrist.

[0013] The specific shape and configuration of the device case that forms the exterior of the timepieces 100, 200 are not particularly limited, and are set appropriately according to the design and specifications. In the drawings showing the embodiments, the device cases of the timepieces 100 and 200 are omitted, and only the internal structure (also called a module) housed within the hollow portion of the device case is shown.

[0014] 1 to 3 are diagrams showing a "first model" watch 100 (internal configuration (modules) of the watch 100). Fig. 1 is an exploded perspective view showing the internal structure of the main parts of the "first model" watch, Fig. 2 is a side cross-sectional view of the main parts of the internal structure of the "first model" watch assembled with the parts shown in Fig. 1, and Fig. 3 is a cross-sectional perspective view of the main parts of the internal structure of the "first model" watch. Note that the dial 7 is not shown in Fig. 3. As shown in FIGS. 1 to 3, the "first model" watch 100 is provided with a solar panel 51 having a substantially circular shape as the solar panel 5.

[0015] 4 to 6 are diagrams showing the "second model" watch 200 (internal configuration (module) of watch 200). FIG. 4 is an exploded perspective view showing the internal structure of the main parts of the "second model" watch, FIG. 5 is a side cross-sectional view of the main parts of the internal structure of the "second model" watch assembled with the parts shown in FIG. 4, and FIG. 6 is a cross-sectional perspective view of the main parts of the internal structure of the "second model" watch. As shown in FIGS. 4 to 6, the "second model" watch 200 is provided with a substantially annular solar panel 52 as the solar panel 5.

[0016] In the following embodiments, in common with the "first model" and "second model," in Figures 1, 2, 4, and 5, the upper side of the axial direction L (see Figures 1, 2, 4, and 5) is the "front side (viewing side)," and the lower side is the "back side (non-viewing side)." The "axial direction L" is the direction along the axis of the analog timepiece (the "axis 25" in Figures 2, 5, etc.). In the following, the side facing the side of the device case (not shown) will be referred to as the "outside" or "outer circumference side," and the side toward the center of the timepiece 100, 200 where the pointer axis 25 (see Figures 2 and 5, etc.) is provided will be referred to as the "inside" or "inner circumference side."

[0017] [composition] First, the "first model" watch 100 (internal configuration (module) of the watch 100) will be described with reference to FIGS. 1 to 3. As shown in Figure 1, the "first model" watch 100 (internal configuration (module) of the watch 100) includes, in order along the axial direction L from the back side (lower side) to the front side (upper side) of the watch 100, a circuit board 1, a base 2, a solar panel 5 (a substantially circular solar panel 51), an outer frame 6, a dial 7, etc. Various electronic components, such as an antenna 11, a secondary battery 12 (see FIG. 2), and, although not shown, an IC (Integrated Circuit) chip, terminals, etc., are mounted on the circuit board 1. A terminal portion 13 on the circuit board 1 is provided at a position corresponding to a terminal portion 55 of a solar panel 5, which will be described later.

[0018] The base 2 is made of, for example, various resins, and is a base member (main plate) on which the various components that make up the watch 100 (the module of the watch 100) are assembled. As shown in Figure 1 etc., the base 2 is placed on top of the circuit board 1 (front side). Various structural parts (neither of which are shown) such as a motor (not shown) and a gear train mechanism for transmitting the power of the motor to the hands (not shown) and date wheel 3 are assembled and distributed appropriately on the front and back (the visible and non-visible sides of the timepiece) of the base 2. In addition, a crown (not shown) is provided as an operating part on a side of the timepiece 100, such as the 3 o'clock side, and a winding core 26 (see Figures 9 and 10) that is connected to an internal structural part (not shown) is attached to the side of the base 2 in a position corresponding to the crown. Furthermore, as will be described later, a date wheel 3 (first date wheel 31 in FIG. 1 etc.), a date wheel holder 4, etc. are provided on the top (front side) of the base 2.

[0019] FIG. 7 is a perspective view of the base of this embodiment, and FIG. 8 is an enlarged perspective view of a main part of the base shown in FIG. 7, the base 2 is made of resin or the like and is generally disk-shaped, with a central hole 24 through which a pointer shaft 25 is inserted. The base 2 has a first mounting portion 21 which is a base mounting portion having a generally annular main surface 21a, a second mounting portion 22 which is provided inside the first mounting portion 21, and an outer peripheral mounting portion (third mounting portion) 23 which is provided around the first mounting portion 21.

[0020] Here, the term "principal surface" refers to a reference surface in the first mounting portion 21, etc. For example, the first mounting portion 21 has some recessed and lowered portions and conversely, protruding portions, resulting in unevenness overall. Even in this case, the surface that primarily supports a plate-shaped component when the component is placed on the first mounting portion 21 is referred to as the "principal surface 21a" of the first mounting portion 21. The same applies to the "principal surfaces" of the second mounting portion 22 and the outer peripheral mounting portion 23 (i.e., the "principal surface 22a" of the second mounting portion 22 and the "principal surface 23a" of the outer peripheral mounting portion 23). The principal surface 23a of the outer peripheral mounting portion 23, which is the third mounting portion, is provided to include a substantially arc-shaped surface.

[0021] In the embodiment, the height (height in the direction along the axial direction L) of the main surface 22a of the second mounting portion 22 of the base 2 is lower than the main surface 23a of the outer periphery side mounting portion 23 and higher than the main surface 21a of the first mounting portion 21. 7 and 8, the main surface 21a of the first mounting portion 21 is shown shaded in gray. As shown in Fig. 7 and 8 (particularly Fig. 8), the main surface 21a of the first mounting portion 21, which is provided in a substantially annular shape, is one step lower than the main surface 22a of the second mounting portion 22, which is provided more inward than the first mounting portion 21.

[0022] 7 and 8, the second mounting portion 22 is provided with a protruding portion 221 at the boundary with the first mounting portion 21, the protruding portion 221 being higher than the main surface 22a of the second mounting portion 22. The protruding portion 221 is a portion on which at least a portion of the inner circumferential side (inner circumferential portion 313, see FIG. 9) of a date indicator 3 (first date indicator 31) described later is placed, and the upper surface of the protruding portion 221 is provided so as to include a substantially arc-shaped surface. In other words, the protruding portion 221 in the embodiment is arranged in a partially interrupted arc shape. Note that the protruding portion 221 may be provided in a substantially continuous ring shape at the boundary between the first mounting portion 21 and the second mounting portion 22. The entire second mounting portion 22 (main surface 22a of the second mounting portion 22) may be formed to have approximately the same height as the protruding portion 221. The protrusions 221 support the inner circumference of the date wheel 3 (first date wheel 31) at approximately equal intervals in a balanced manner, so that the date wheel 3 (first date wheel 31) is placed on the second mounting portion 22 without tilting.

[0023] The protruding portion 221 does not necessarily have to be provided on the second placement portion 22, but may be provided on the first placement portion 21 as long as it is at a position corresponding to the outer periphery (boundary) of the second placement portion 22 which is substantially circular. Furthermore, the substantially circular date indicator holder 4 needs to press the inner circumference of the substantially annular date indicator 3. For this reason, it is preferable that the second mounting portion 22 on which members such as the date indicator holder 4 are placed is substantially circular, and it is preferable in terms of both arrangement and ease of processing that the protruding portion 221 be provided on the outer periphery of the second mounting portion 22 (the boundary with the first mounting portion 21). However, if the protruding portion 221 cannot be provided on or near the second mounting portion 22 due to the arrangement of various components such as a motor (not shown), an auxiliary protruding portion 211 having an upper surface at the same height as the upper surface of the protruding portion 221 may also be provided on the first mounting portion 21 as an auxiliary, as shown in Figure 7.

[0024] 9 is a perspective view showing a state in which the first date indicator and date indicator holder are assembled on the upper (front side) surface of the base shown in FIG. As shown in Figure 9, the date indicator 3 (first date indicator 31) is formed in a substantially annular shape, and is positioned below the outer peripheral frame 6. As mentioned above, at least a portion of the inner circumferential side (inner circumferential portion 313) of the date indicator 3 (first date indicator 31) is positioned on the second mounting portion 22 (in the embodiment, the protruding portion 221 of the second mounting portion 22). The material from which the date indicator 3 (first date indicator 31) is formed is not particularly limited, but it may be formed from a metal such as stainless steel (SUS) or titanium, for example.

[0025] The date wheel 3 (first date wheel 31) has a substantially annular main body 311 and an inner peripheral portion 313 which is the inner peripheral portion of the main body 311. Numbers and the like (referred to as character portion 312) indicating the date are provided on the surface of the main body 311. The character portion 312 may be provided flatly by printing or the like, or may be provided three-dimensionally by cutting or adhering cut-out character shapes or the like onto the main body portion 311. Furthermore, a tooth portion (gear portion) 35 is formed circumferentially on the inner peripheral side of the inner peripheral portion 313 (see FIG. 9).

[0026] A gear 27 that meshes with at least the tooth portion (gear portion) 35 of the date indicator 3 (first date indicator 31) is exposed on the main surface 22a of the second mounting portion 22. The gear 27 constitutes a train wheel mechanism (not shown) that rotates the substantially annular date indicator 3 (first date indicator 31) in the circumferential direction. The main body of the train wheel mechanism that rotates the date indicator 3 (first date indicator 31) and a motor for operating this (neither of which are shown) may be mounted on the back side of the base 2.

[0027] Furthermore, a date indicator holder 4 that prevents the date indicator 3 (first date indicator 31) from floating is arranged on the main surface 22a of the second mounting portion 22. The date indicator holder 4 is a substantially disc-shaped member that is arranged inside the substantially annular date indicator 3 (first date indicator 31) (inside the protruding portion 221, which is the portion on which at least a portion of the inner circumferential side of the date indicator 3 (first date indicator 31) is mounted). The date indicator holder 4 has a roof portion 41 that extends above at least a portion of the inner circumferential side of the date indicator 3. It is arranged so as to cover the upper part of the inner circumferential side of the date indicator 3 (first date indicator 31) to the extent that it does not interfere with the tooth portion (wheel portion) 35 of the date indicator 3 (first date indicator 31). In this way, the date indicator holder 4 prevents the date indicator 3 (first date indicator 31) from floating, without impeding its rotation. In addition, a magnetic shield plate (not shown) or the like may be disposed on the main surface 22a of the second mounting portion 22. When a magnetic shield plate is provided, it is disposed in a position that can at least cover the motor, and the motor is magnetically shielded by the magnetic shield plate.

[0028] Furthermore, the outer peripheral mounting portion 23 of the base 2 is capable of arranging at least a part of the solar panel 5 (substantially circular solar panel 51) provided at a height position between the outer peripheral frame 6 and the date wheel 3 (first date wheel 31). That is to say, as shown in Figures 1 to 3, in the "first model" timepiece 100, the solar panel 5 (substantially circular solar panel 51) is arranged in the space above the date wheel 3 (first date wheel 31). The solar panel 5 has one or more photovoltaic elements that receive light and generate electromotive force.

[0029] FIG. 10 is a perspective view showing a state in which a substantially circular solar panel is placed on the upper (front) surface of the base in the state shown in FIG. As shown in Figures 1 and 10, the approximately circular solar panel 51 provided on the "first model" watch 100 is a thin, disk-shaped member, and has an axial hole 511 through which the pointer shaft 25 is inserted formed in approximately the center corresponding to the axial hole 24 of the base 2 (see Figure 7). A small window 512 is formed at the 3 o'clock position on the analog timepiece, and the character portion 312 of the date wheel 3 (first date wheel 31) corresponding to the date display is exposed through the small window 512.

[0030] 10, the substantially circular solar panel 51 has an outer peripheral portion 513 that does not contribute to power generation on its outer periphery, and this outer peripheral portion 513 is mounted on the main surface 23a of the outer peripheral mounting portion 23. In the example shown in FIG. 1 etc., the outer peripheral portion 513 is provided on a part of the outer peripheral portion of the substantially circular solar panel 51, but the range, size, shape, etc. of the outer peripheral portion 513 are not limited to the illustrated example. The outer peripheral portion 513 may be provided on the entire outer peripheral portion of the substantially circular solar panel 51, for example.

[0031] An extension portion 515 extending outward is formed on a portion of the outer periphery 513, and a terminal portion 55 is provided on the back side of the extension portion 515. A contact member 15 is connected from below to a position corresponding to the terminal portion 55. The contact member 15 is, for example, a coil spring made of a conductor, and its base end connects to a terminal portion 13 (see FIG. 1) on the circuit board 1 side. The contact member 15 is inserted from the circuit board 1 side through the base 2 (for example, the first mounting portion 21 or the outer periphery mounting portion 23 of the base 2) in the thickness direction (direction along the axial direction L) so that its insertion end connects to a terminal portion 55 of the solar panel 5 (a substantially circular solar panel 51). Two terminal portions 13 and two terminal portions 55 are provided, and the solar panel 51 is connected to the circuit board 1 at two locations. This electrically connects the solar panel 5 (approximately circular solar panel 51) to the circuit board 1 via the contact member 15, and the electromotive force generated in the solar panel 5 is supplied to the circuit board 1 and the secondary battery 12 provided on the circuit board 1, providing a power source for each part of the watch 100.

[0032] By using a coil spring as the contact member 15, it is possible to prevent poor contact even if the length of the contact member 15 varies slightly due to tolerances or the like. On the other hand, the contact member 15, which is a coil spring, functions as a pressing member whose end on the insertion side exerts a restoring force upward from the circuit board 1. In other words, the contact member 15 has a pressing force that presses up the solar panel 5. For this reason, in this embodiment, the peripheral frame 6 is arranged at a position facing the end of the insertion side of the contact member 15 to prevent the solar panel 5 from being pushed upward by the contact member 15.

[0033] The outer peripheral frame 6 presses down at least a part of the solar panel 5 from above against the pressing force from below by the contact members 15 as pressing members, thereby preventing the solar panel 5 from floating up or rattling. That is, when at least a portion of the approximately circular solar panel 51 is placed on the outer peripheral mounting portion 23, the outer peripheral frame 6 presses down on at least a portion of the approximately circular solar panel 51 from above, preventing the solar panel 5 (approximately circular solar panel 51) from floating up.

[0034] Figure 11 is an oblique view of the outer peripheral frame viewed from the back side facing the base, and Figure 12 is an oblique view showing an approximately circular solar panel superimposed on the outer peripheral frame shown in Figure 11 from the back side. As shown in FIG. 11 and other figures, the outer peripheral frame 6 is formed in a substantially annular shape, and is disposed along at least a part of the outer peripheral side mounting portion 23 of the base 2. The outer peripheral frame 6 has hook portions 65 at multiple points in the circumferential direction that are engaged with the outer periphery of the base 2. The hook portions 65 have, for example, spring properties and have engaging claws 651 that protrude toward the inner periphery. By hooking the engaging claws 651 of the hook portions 65 onto the outer periphery of the base 2, the outer peripheral frame 6 is engaged with the base 2 and is attached so that it does not lift off the base 2.

[0035] It is preferable that the hook portions 65 are provided at least near the position where the contact members 15 will be provided when the solar panel 5 (the substantially circular solar panel 51) is placed. As mentioned above, the contact members 15 are pressing members such as coil springs, and the solar panel 5 (the substantially circular solar panel 51) is pushed up from below at the portion where the contact members 15 are provided. For this reason, by providing the hook portions 65 in this vicinity, the outer peripheral frame 6 is firmly locked to the base 2, and can withstand the pressing force from below when the solar panel 5 is pushed up. In the "second model" described later, the spacer 8 is disposed at a position substantially opposite the contact member 15. For this reason, the peripheral frame 6 is formed with a hole 63 for attaching the spacer 8. It is preferable that the hook portion 65 is provided near this hole 63.

[0036] The outer peripheral frame 6 has a first lower surface 61 provided at the lower part on the outer peripheral side, and a second lower surface 62 provided on the inner peripheral side of the first lower surface 61 and above at least a portion of the first lower surface 61. The first lower surface 61 of the outer peripheral frame 6 is in contact with the main surface 23a of the outer peripheral side mounting portion 23 (see, for example, FIG. 3). The outer peripheral frame 6 is also configured to allow attachment of spacers 8, which will be described later. For example, the spacers 8 are made of a material such as metal or carbon tool steel, and the outer peripheral frame 6 is made of a material such as synthetic resin (insulating material). For example, a hole 63 is provided in the second lower surface 62 of the outer peripheral frame 6 to engage at least a portion of the spacer 8. The spacer 8 is disposed at a position generally facing at least the contact member 15, which is a pressing member. Note that the spacers 8 may be disposed not only at a position generally facing the contact member 15, but also at multiple locations around the periphery of the outer peripheral frame 6. In this case, it is preferable that the spacers 8 be disposed at equal intervals around the periphery as possible, in addition to being disposed at a position generally facing the contact member 15.

[0037] When the solar panel 5 (substantially circular solar panel 51) is placed in the space above the date wheel 3 (first date wheel 31) as in the timepiece 100, as shown in Figure 12, at least a part of the outer periphery 513 of the solar panel 5 (substantially circular solar panel 51) is arranged to contact the second lower surface 62. It is then possible to sandwich at least a part of the outer periphery 513 of the substantially circular solar panel 51 between the second lower surface 62 of the outer periphery frame 6 and the outer periphery-side mounting portion 23.

[0038] FIG. 13 is a cross-sectional side view of the main part of the contact portion between the solar panel and the circuit board in a "first model" watch provided with a substantially circular solar panel. As shown in Figure 13, when an approximately circular solar panel is placed in the space above the date wheel 3 (first date wheel 31), the outer frame 6 is able to directly press the outer periphery 513 of the solar panel 5 (approximately circular solar panel 51) with the second lower surface 62. This prevents the solar panel 5 (substantially circular solar panel 51) from floating up and keeps it from tilting even if the solar panel 5 (substantially circular solar panel 51) is pushed up from below by the restoring force (pressing force) of the contact member 15.

[0039] The dial 7 (first dial 71) is placed on top of the base 2 after the date wheel 3 (first date wheel 31), date wheel holder 4, and solar panel 5 (approximately circular solar panel 51) have been assembled (i.e., after the state shown in Figure 10 has been reached), on the upper side (surface side) of the axial direction L. The first dial 71 is made of a light-transmitting material that transmits sunlight, such as a transparent resin, which allows sunlight to be received by the solar panel 5 (substantially circular solar panel 51) located below the first dial 71, ensuring a sufficient amount of light necessary for power generation.

[0040] A pivot hole 711 is formed in the approximate center of the dial 7 (first dial 71) corresponding to the position where the pivot 25 is inserted. The pivot 25 passes through the pivot hole 711 from bottom to top in the axial direction L and is exposed above the dial 7 (first dial 71). Hands (not shown), such as an hour hand, minute hand, and second hand, are attached to the part of the pivot 25 exposed above the dial, and they display the time as appropriate. Furthermore, the dial 7 (first dial 71) is formed with a date window 712 (see Figure 1) at a position corresponding to the small window 512 in the solar panel 5 (substantially circular solar panel 51). From the date window 712, it is possible to see the character portion 312 (see Figure 9) corresponding to the date display of the date wheel 3 (first date wheel 31) exposed through the small window 512.

[0041] Next, the "second model" watch 200 (internal configuration (module) of the watch 200) will be described with reference to Figures 4 to 6. Note that the dial 7 is not shown in Figure 6. Also, the same components and parts as those in the aforementioned "first model" are given the same reference numerals, and descriptions thereof will be omitted where appropriate.

[0042] As shown in Figure 4, the "second model" watch 200 (internal configuration (module) of watch 200) includes, in order along the axial direction L from the back side (lower side) to the front side (upper side) of watch 200, a circuit board 1, a base 2, a solar panel 5 (a roughly annular solar panel 52), an outer frame 6, a dial 7, etc. In the watch 200, the configuration of the circuit board 1, base 2, and outer frame 6 is the same as that of the "first model" watch 100 (internal configuration (module) of the watch 100) shown in Figures 1 to 3, etc., so explanations thereof will be omitted.

[0043] On the top (front side) of the base 2, a date wheel 3 (second date wheel 32 in FIG. 4 etc.), a date wheel holder 4 and the like are provided. As shown in FIG. 4 and other figures, the second date indicator 32 is formed in a substantially annular shape, similar to the first date indicator 31, and is disposed below the outer peripheral frame 6. The date wheel 3 (second date wheel 32) has an outer circumferential portion 321 which is the portion on the outer circumferential side, an inner circumferential portion 322 which is the portion on the inner circumferential side, and a character portion 323 provided between the outer circumferential portion 321 and the inner circumferential portion 322. Between the outer circumferential portion 321 and the inner circumferential portion 322 is a through portion 324 which penetrates from the front to the back of the date wheel 3, leaving a minimum portion for connecting the character portion 323 to the outer circumferential portion 321 or the inner circumferential portion 322.

[0044] At least a part of the inner circumferential portion 322 of the date wheel 3 (second date wheel 32) is arranged on the second mounting portion 22 (the protruding portion 221 of the second mounting portion 22 in the embodiment). On the inner circumferential side of the inner circumferential portion 322, similar to the first date indicator 31, a tooth portion (gear portion) 35 that meshes with the gear 27 that constitutes the train wheel mechanism is formed along the circumferential direction (see FIG. 6). The material from which the date wheel 3 (second date wheel 32) is made is not particularly limited, but it is made of metal such as stainless steel (SUS), titanium, etc. Furthermore, the method for forming the character portion 323, etc. is not particularly limited, and various methods can be used, such as laser processing, punching a metal plate, casting, etc. The date dial holder 4 is the same as that of the "first model" watch 100, so its explanation will be omitted.

[0045] In the "second model" watch 200, the solar panel 5 is a substantially annular solar panel 52 as shown in Figure 4. The solar panel 5 (substantially annular solar panel 52) is placed on a first mounting portion 21 on the base 2. The first mounting portion 21 is provided corresponding to a position below the date wheel 3 (second date wheel 32). In this way, the substantially annular solar panel 52 is provided below the date wheel 3 (second date wheel 32), and as mentioned above, the second date wheel 32 has a through-hole 324. Therefore, sunlight passes through the through-hole 324 and is irradiated onto the solar panel 5 (substantially annular solar panel 52), ensuring a sufficient amount of light necessary for power generation.

[0046] Furthermore, the first mounting portion 21 of the base 2 has its main surface 21a located at a height position lower than the date indicator 3 (second date indicator 32), allowing for the placement of a substantially annular solar panel 52. The height dimension from the main surface 21a of the first mounting portion 21 on the base 2 to the underside of the date indicator 3 (second date indicator 32) is greater than the thickness dimension of the substantially annular solar panel 52. Therefore, even when the solar panel 5 (approximately annular solar panel 52) is placed on the first mounting portion 21, the approximately annular solar panel 52 does not interfere with the underside of the second date wheel 32, and the rotation of the date wheel 3 (second date wheel 32) is not hindered.

[0047] An extension portion 522 extending outward is provided on an outer peripheral portion 523 that is provided on the outer periphery of the solar panel 5 (substantially annular solar panel 52) and does not contribute to power generation, and a terminal portion 55 is provided on a portion of the back surface of this extension portion 522, similar to the substantially circular solar panel 51 in the "first model." A contact member 15 is connected from below to a position corresponding to the terminal portion 55. The contact member 15 functions as a pressing member that exerts a restoring force upward from the side of the circuit board 1 arranged below the base 2.

[0048] 5 and 6, when the solar panel 5 (substantially annular solar panel 52) is placed on the first mounting portion 21 (main surface 21a of the first mounting portion 21) of the base 2, which is the space below the date wheel 3 (second date wheel 32), there is a distance between the second lower surface 62 of the outer peripheral frame 6 and the upper surface of the solar panel 5 (substantially annular solar panel 52). For this reason, even if the solar panel 5 is pushed up by the contact member 15, the second lower surface 62 of the outer peripheral frame 6 cannot directly press down on the outer peripheral portion 523 of the solar panel.

[0049] Therefore, when the solar panel 5 (approximately annular solar panel 52) is placed on the first mounting portion 21 (main surface 21a of the first mounting portion 21), the spacer 8 is attached to the hole portion 63 provided in the second lower surface 62 of the outer frame 6. FIG. 6 is a cross-sectional perspective view of the main part of the timepiece showing the state in which the spacer is attached to the hole, and FIG. 14 is a cross-sectional side view of the main part of the timepiece in the state shown in FIG.

[0050] As shown in Figures 6 and 14, the spacer 8 is attached in a position substantially opposite the contact member 15, which is a pressing member, and the outer peripheral frame 6 indirectly presses at least a portion (for example, the extension portion 522 or outer peripheral portion 521) of the solar panel 5 (substantially annular solar panel 52) from above via the spacer 8, with the spacer 8 attached to the second lower surface 62 of the outer peripheral frame 6. This makes it possible to press the solar panel 5 (substantially annular solar panel 52) against the pressing force from below by the contact member 15, which is a pressing member, and prevents the solar panel 5 (substantially annular solar panel 52) from floating up, ensuring connection with the terminal portion 13 on the circuit board 1. It is also possible to avoid the solar panel 5 (substantially annular solar panel 52) arranged below the date indicator 3 (second date indicator 32) coming into contact with the underside of the date indicator 3 (second date indicator 32), thereby hindering the rotation of the date indicator 3.

[0051] The dial 7 (second dial 72) is placed on top of the base 2, which is assembled with the date wheel 3 (second date wheel 32), date wheel holder 4, and solar panel 5 (approximately annular solar panel 52), and is positioned on the upper side (surface side) of the axial direction L. The dial 7 (second dial 72) is made of a metal material such as titanium or stainless steel (SUS), or various resins, etc. The second dial 72 is an opaque, non-transparent member that does not allow light to pass through.

[0052] As shown in Figure 4, the dial 7 (second dial 72) is a substantially disc-shaped member and has a main body 722 with an axis hole 721 formed in its approximate center for inserting the pointer shaft 25, and an outer periphery 724 with a plurality of openings 723 formed on the outer periphery of the main body 722 and arranged circumferentially. At least the portion of the second dial 72 that corresponds to the date indicator 3 (second date indicator 32) is the outer periphery 724, and the letter portion 323 of the date indicator 3 (second date indicator 32) is exposed and visible through the opening 723. The second dial 72 also transmits sunlight through the opening 723 to the solar panel 5 (substantially annular solar panel 52) that is positioned below the date indicator 3 (second date indicator 32). At least the outer periphery 724 of the second dial 72 may be made of a light-transmitting material that transmits sunlight, such as a transparent resin. In this case, the opening 723 does not need to be provided in the outer periphery 724.

[0053] [Effect] Next, the operation of this embodiment will be described. In this embodiment, a base 2 is placed on a circuit board 1, the inner circumference 313, 322 of the date wheel 3 (first date wheel 31 or second date wheel 32) is placed on the protruding portion 221 of the second mounting portion 22 of the base 2, and a date wheel holder 4 is placed inside the date wheel 3 (first date wheel 31 or second date wheel 32).

[0054] If the timepiece is a "first model" timepiece 100, the substantially circular solar panel 51 is placed in the space above the date wheel 3 (first date wheel 31). That is, at least a part of the outer periphery 513 of the substantially circular solar panel 51 is placed on the main surface 23a of the outer periphery mounting portion 23 of the base 2, and then the outer periphery frame 6 and dial 7 (first dial 71) are placed thereon.

[0055] At least a portion of the first lower surface 61 of the outer frame 6 contacts the main surface 23a of the outer side mounting portion 23, and at least a portion of the second lower surface 62 of the outer frame 6 contacts the upper surface of at least a portion of the outer peripheral portion 513 of the approximately circular solar panel 51. As a result, at least a portion of the outer peripheral portion 513 of the approximately circular solar panel 51 is sandwiched between the main surface 23a of the outer peripheral side mounting portion 23 of the base 2 and the second lower surface 62 of the outer peripheral frame 6, and is directly pressed down by the second lower surface 62 of the outer peripheral frame 6 so that the approximately circular solar panel 51 does not float up even when pressed from below by the contact member 15.

[0056] Furthermore, if the timepiece is a "second model" timepiece 200, the substantially annular solar panel 52 is placed on the main surface 21a of the first mounting portion 21 of the base 2, which is the space below the date wheel 3 (second date wheel 32). In this case, the date wheel 3 (second date wheel 32), outer peripheral frame 6, and dial 7 (second dial 72) are arranged above the substantially annular solar panel 52. At this time, spacers 8 are attached to holes 63 formed in the second lower surface of the outer periphery frame 6, and in this state the outer periphery frame 6 is attached to the base 2. In this case as well, at least a portion of the first lower surface 61 of the outer periphery frame 6 contacts the main surface 23a of the outer periphery mounting portion 23. Furthermore, the spacers 8 provided on the second lower surface 62 of the outer periphery frame 6 contact at least a portion of the outer periphery 523 of the substantially annular solar panel 52, pressing the substantially annular solar panel 52 against the main surface 21a of the first mounting portion 21 of the base 2. As a result, the approximately annular solar panel 52 is indirectly held down by the outer frame 6 via the spacer 8 provided on its second lower surface 62 so that it does not float up even when pressed from below by the contact member 15.

[0057] Conventional electronic watches generally use a roughly circular solar panel that has a large light-receiving area and is relatively inexpensive. Some models also use a roughly annular solar panel, which is relatively expensive but has a high power generation efficiency relative to the light-receiving area. Previously, a base or peripheral frame could accommodate one type of solar panel layout or shape, and if a different solar panel layout or shape was desired, a new base or peripheral frame had to be designed and manufactured. Devices like watches, in particular, must be small and thin because they are worn on the user's wrist, and there was also the problem of limited flexibility in the layout of large components such as solar panels and date indicators.

[0058] For example, when an electronic watch is equipped with an approximately circular date wheel and an approximately circular solar panel, it is common to place the approximately circular solar panel on top of the approximately circular date wheel; conversely, if the approximately circular solar panel is placed below the approximately circular date wheel, not only will the date wheel block light from reaching the solar panel, reducing power generation efficiency, but the approximately circular solar panel, which has a relatively large area (volume), will be placed further inside the device, which may reduce the freedom of placement of other components. Furthermore, when an electronic timepiece is equipped with a substantially annular date wheel and a substantially annular solar panel, the substantially annular solar panel can be positioned either above or below the substantially annular date wheel, but if the substantially annular solar panel were positioned above the substantially annular date wheel, a boundary would be created between the substantially annular solar panel and the area inside it, making it easy for the user to recognize that the substantially annular solar panel is located, which could lead to a deterioration in design. Therefore, for reasons such as improving design by intentionally revealing the substantially annular date wheel and making the boundary between the substantially annular solar panel and the area inside it less noticeable on the date wheel, it is preferable to position the substantially annular solar panel below the substantially annular date wheel.

[0059] In the past, due to demands for smaller and thinner models, as well as the positional relationship with relatively large parts such as the date wheel, it was necessary to design and manufacture a new base and outer frame according to the shape of the solar panel.

[0060] For example, FIG. 15 is a cross-sectional side view of a main part showing an example of a conventional timepiece (timepiece module). 15, there is no space below the date indicator 30 in which the solar panel 50 can be placed. In this case, the base 20 and outer peripheral frame 60 are compatible only with the timepiece 500 (the module of the timepiece 500) when the solar panel 50 is placed in the space above the date indicator 30 (the "first model" in this embodiment), and are not compatible with the timepiece 500 when the solar panel 50 is placed in the space below the date indicator 30 (the "second model" in this embodiment).

[0061] In the configuration shown in Figure 15, the solar panel 50 is arranged over almost the entire area below the dial 70. For this reason, a light-transmitting type must be used for the dial 70. Furthermore, because the solar panel 50 is arranged above the date wheel 30, it is difficult to create a configuration in which the date wheel 30 is visible as part of the exterior design, which creates design and engineering constraints. In this regard, by adopting the configuration of this embodiment, at least the base 2 and the outer frame 6 can be made common, while the solar panel 5 (either an approximately circular solar panel 51 or an approximately annular solar panel 52) can be selectively placed above or below the date wheel 3 (the first date wheel 31 or the second date wheel 32) depending on the design, etc.

[0062] [effect] As described above, according to this embodiment, the timepiece 100, 200, which is an electronic device, has a first mounting portion 21 having a substantially annular main surface 21a, a second mounting portion 22 which is located more inward than the first mounting portion 21 and has a main surface 22a and a protruding portion 221 protruding upward, an outer peripheral mounting portion 23 which is a third mounting portion located around the first mounting portion 21, and the height of the main surface 22a and the protruding portion 221 of the second mounting portion 22 is lower than the main surface 23a of the outer peripheral mounting portion 23 which is the third mounting portion, and is higher than the main surface 21a of the first mounting portion 21, and a substantially annular date wheel 3 which has a thickness dimension smaller than the difference between the height of the protruding portion 221 of the second mounting portion 22 and the height of the main surface 23a of the outer peripheral mounting portion 23 which is the third mounting portion, and at least a portion of its inner peripheral side is located on the second mounting portion 22. This allows space to be secured above and below the date wheel 3 (first date wheel 31 or second date wheel 32) to accommodate the installation of a solar panel 5 (a roughly circular solar panel 51 or a roughly annular solar panel 52), and a common base 2, etc. can be used for watches with multiple designs that differ in the placement position and shape of the solar panel 5. This eliminates the effort and cost of designing and manufacturing the base 2 etc. for each design etc., and makes it possible to easily realize clocks with various exterior designs etc. without being bound by design restrictions etc.

[0063] In this embodiment, the main surface 23a of the outer peripheral side mounting portion 23, which is the third mounting portion, includes a substantially arc-shaped surface, and the outer peripheral frame 6 is disposed along at least a part of the outer peripheral side mounting portion 23. The outer frame 6 has a first lower surface 61 provided at the bottom of the outer periphery and in contact with the main surface 23a of the outer periphery side mounting portion 23, which is the third mounting portion, and a second lower surface 62 provided on the inner periphery side of the first lower surface 61 and above at least a portion of the first lower surface 61. Between the outer peripheral side mounting portion 23, which is the third mounting portion, and the second lower surface 62 of the outer peripheral frame 6, the solar panel 5 (a substantially circular solar panel 51) is arranged. Therefore, when a substantially circular solar panel 51 is provided on the base 2, it can be held in a predetermined position.

[0064] Furthermore, the peripheral frame 6 of this embodiment has hook portions 65 that are provided to extend downward and are engaged with the outer periphery of the base 2 . By hooking the hook portion 65 (the locking claws 651 of the hook portion 65) onto the outer periphery of the base 2, the outer frame 6 is locked to the base 2 and attached so as not to lift up from the base 2, thereby preventing components (for example, the approximately circular solar panel 51) placed between the base 2 and the outer frame 6 from lifting up.

[0065] In addition, the outer frame 6 is engaged with the base 2, and is configured so that at least the second lower surface 62 can directly or indirectly hold down the outer periphery of the solar panel 5 (a substantially circular solar panel 51 or a substantially annular solar panel 52). The solar panel 5 needs to be connected to the circuit board 1 by contact members 15, which are often pressing members such as coil springs. In this regard, even when the contact members 15 are pressing members, the solar panel 5 can be pressed directly or indirectly by the outer frame 6, so even if the solar panel is pressed upward, it is possible to prevent the solar panel from tilting or interfering with members arranged above the solar panel 5 (for example, the second date wheel 32).

[0066] Furthermore, when an approximately circular solar panel 51 is placed in the space above the date wheel 3 (first date wheel 31), it is configured so that at least a portion of the outer periphery 513 of the approximately circular solar panel 51 can be sandwiched between the second lower surface 62 of the outer periphery frame 6 and the main surface 23a of the outer periphery side mounting portion 23 of the base 2. Therefore, even if the substantially circular solar panel 51 is pressed from below by the contact member 15 or the like, the substantially circular solar panel 51 as a member can be stably held against the pressing force.

[0067] In this embodiment, the upper surface of the protruding portion 221 of the second mounting portion 22 includes an approximately arc-shaped surface, and the inside of the protruding portion 221 is provided with a date wheel holder 4 having a roof portion 41 that extends above at least a portion of the inner circumferential side of the date wheel 3. This holds down at least the inner circumferential side of the date wheel 3, preventing the date wheel 3 from floating up.

[0068] The first mounting portion 21 on the base 2 is provided below the date wheel 3 (second date wheel 32), and a substantially annular solar panel 52 can be placed on the first mounting portion 21. As a result, space is secured under the date wheel 3 (second date wheel 32) to place the solar panel 5, and the solar panel 5 (approximately circular solar panel 51 or approximately annular solar panel 52) can be provided above or below the date wheel 3 (first date wheel 31 or second date wheel 32) without changing the shape or configuration of the base 2, etc.

[0069] Furthermore, the height dimension from the main surface 21a of the first mounting portion 21 in the base 2 to the underside of the date wheel 3 (second date wheel 32) is greater than the thickness dimension of the solar panel 52 which is substantially annular. Therefore, when the solar panel 5 is placed under the date indicator 3 (second date indicator 32), it is possible to prevent the solar panel 5 from coming into contact with the date indicator 3 (second date indicator 32) and impeding its rotation.

[0070] [Variations] Although the embodiments of the present invention have been described above, it goes without saying that the present invention is not limited to these embodiments and that various modifications are possible without departing from the spirit of the present invention.

[0071] For example, in the embodiment, when the solar panel 5 is provided under the date wheel 3 (second date wheel 32), the date wheel 3 (second date wheel 32) is provided with a through hole 323 to allow sunlight to pass through, but if, for example, the entire date wheel 3 is made of a light-transmitting material, a date wheel 3 without a through hole 323 may be placed on top of the solar panel 5 (approximately annular solar panel 52).

[0072] Furthermore, the shape of the outer peripheral frame 6 is not limited to the (substantially annular) shape shown in the embodiment. The peripheral frame 6 only needs to be positioned at a position facing at least the contact members 15 that function as pressing members, and may be an arc-shaped member that follows the outer periphery of the base 2. In this case, the arc-shaped peripheral frames are positioned as evenly spaced as possible in three or four locations, including the positions facing the contact members 15. This allows the solar panel 5 to be stably pressed down without tilting.

[0073] In addition, although the embodiment illustrates a case where the solar panel 5 provided under the date wheel 3 (second date wheel 32) is approximately annular, the shape of the solar panel 5 provided under the date wheel 3 (second date wheel 32) is not limited to being approximately annular. For example, it may be C-shaped. Furthermore, by configuring the first mounting portion 21, which is the space for placing the solar panel 5 under the date wheel 3 (second date wheel 32), in an approximately circular shape, it is possible to accommodate cases where the solar panel 5 actually placed on the first mounting portion 21 is approximately circular, C-shaped, etc., without having to make design changes, which is preferable.

[0074] In addition, in the embodiment, a case has been illustrated in which a hole portion 63 is provided in the outer peripheral frame 6 and the spacer 8 is attached to the hole portion 63, but the part where the spacer 8 is attached is not limited to the hole portion 63, and may be a recess that does not penetrate vertically, etc.

[0075] In the present embodiment, the electronic devices are the watches 100 and 200, but the electronic devices are not limited to watches. The electronic device is not limited to one that displays time using hands, as long as it has a date wheel 3 and has space above and below the date wheel 3 to accommodate the solar panels 5. For example, it may be a calendar device that does not display the time but displays the date, day of the week, etc. Furthermore, even if the electronic device is a clock, it is not limited to a clock that displays the time using hands as exemplified in the embodiment. For example, the time may be displayed using a digital display such as a liquid crystal display.

[0076] Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and its equivalents. [Explanation of symbols]

[0077] 1 circuit board 13 Terminal section 2 bases 21 First placement section 21a Main surface 22 Second placement section 22a Main surface 23 Outer circumference side placement section (third placement section) 23a Main surface 3 day car 31 The First Sun Wheel 32 The Second Sun Wheel 35 Tooth 4 Day Wheel Presser 5. Solar panels 51 Nearly circular solar panel 52 Nearly annular solar panel 55 Terminal section 6 Periphery frame 61 1st bottom surface 62 2nd bottom surface 63 Hole 7 Dial 8 spacers 100 Watches (electronic devices) 200 Watches (electronic devices)

Claims

1. A base comprising a base mounting portion whose main surface is provided in a substantially annular shape, and an outer peripheral mounting portion provided around the base mounting portion, wherein the height of the outer peripheral mounting portion is set higher than the height of the base mounting portion, An outer frame arranged along at least a portion of the outer peripheral mounting portion of the base, A pressing member is inserted through the base in the thickness direction, with the end on the insertion side facing the outer frame and acting as a restoring force upwards, It comprises a solar panel that is either roughly ring-shaped, roughly circular, or C-shaped, When a substantially annular solar panel or the C-shaped solar panel is positioned on the base mounting portion, the pressing member indirectly presses the substantially annular solar panel or the C-shaped solar panel against the outer peripheral frame. If at least a portion of a substantially circular solar panel is placed on the outer peripheral mounting portion, the substantially circular solar panel is directly pressed against the outer peripheral frame. An electronic device characterized by the following features.

2. The outer peripheral frame has a first lower surface provided at the lower part of the outer peripheral side and in contact with the main surface of the outer peripheral mounting portion, and a second lower surface provided on the inner peripheral side of the first lower surface and above at least a part of the first lower surface, to which a spacer can be attached. The electronic device according to feature 1.

3. The pressing member is When the substantially annular solar panel or the C-shaped solar panel is positioned on the base mounting portion, the spacer is attached to the second lower surface, and the substantially annular solar panel or the C-shaped solar panel is pressed against the second lower surface via the spacer. If at least a portion of the substantially circular solar panel is placed on the outer peripheral mounting portion, the substantially circular solar panel is pressed against the second lower surface. The electronic device according to feature 2.

4. The spacer is positioned substantially opposite to the pressing member, The electronic device according to feature 2.

5. The second lower surface is provided with a hole or recess for engaging at least a portion of the spacer, The electronic device according to feature 2.

6. A circuit board is placed below the base, The pressing member is a contact member whose insertion end is connected to one of the terminal portions of the substantially annular solar panel, the C-shaped solar panel, or the substantially circular solar panel, and whose other end is connected to the terminal portion of the circuit board. The electronic device according to feature 1.

7. The terminal portion of the substantially annular solar panel, the terminal portion of the C-shaped solar panel, or the terminal portion of the substantially circular solar panel is each provided at the lower part of an extension that extends outward from the outer circumference. The electronic device according to feature 6.

8. At least a portion of the outer peripheral mounting portion is cut out so that the base mounting portion extends outward, The extension extends to the position where the outer peripheral mounting portion is notched. The electronic device according to feature 7.

9. The contact member is a coil spring that presses one of the substantially annular solar panel, the substantially circular solar panel, or the C-shaped solar panel toward the outer peripheral frame. The electronic device according to feature 6.

10. A substantially annular sunwheel is provided, which is positioned at a height below the outer peripheral mounting portion and above the main surface of the base mounting portion. The electronic device according to feature 1.

11. A base comprising a base mounting portion whose main surface is provided in a substantially annular shape, and an outer peripheral mounting portion provided around the base mounting portion, wherein the height of the outer peripheral mounting portion is set higher than the height of the base mounting portion, An outer frame arranged along at least a portion of the outer peripheral mounting portion of the base, A pressing member is inserted through the base in the thickness direction, with the end on the insertion side facing the outer frame and acting as a restoring force upwards, It comprises a solar panel that is either roughly ring-shaped, roughly circular, or C-shaped, When a substantially annular solar panel or the C-shaped solar panel is positioned on the base mounting portion, the pressing member indirectly presses the substantially annular solar panel or the C-shaped solar panel against the outer peripheral frame. If at least a portion of a substantially circular solar panel is placed on the outer peripheral mounting portion, the substantially circular solar panel is directly pressed against the outer peripheral frame. An electronic clock characterized by the following features.

Images