Electronic equipment and methods for assembling electronic equipment

Abstract

To provide electronic equipment capable of more efficiently performing the photovoltaic power generation, and to provide a method for assembling the electronic equipment.SOLUTION: An electronic timepiece (1) includes: a cylindrical housing (12) having at least the upper end opened; a dial (13) located in the housing (12) and exposed on the upper end side; a light-transmissive parting plate (15) having an annular shape along the inner peripheral surface of the housing (12); an annular solar panel (16) located below the parting plate (15); and an annular packing (19) for fixing the outer edge of the solar panel (16).SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This invention relates to an electronic device and a method for assembling an electronic device.

Background Art

[0002] In portable electronic devices used in a wide range of environments, a transparent windscreen glass is positioned to cover the display screen so as to obtain waterproof and dustproof properties while appropriately securing the display screen. On the other hand, in portable electronic devices, light incident through this windscreen glass is often used for solar power generation.

[0003] Conventionally, there is a solar panel (solar panel) that is positioned overlapping the display surface (display unit) of the dial. In this case, in an electronic device that performs display using a pointer, there is a problem that the power generation efficiency is low compared to the area due to the shadow of the pointer. On the other hand, Patent Document 1 discloses an electronic clock in which a solar panel is positioned along the side surface of the space between the display unit and the windscreen glass.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the case of light incident from the side, there is a problem that a shadow is likely to occur on a part of the side depending on the orientation of the electronic device, and ultimately the power generation efficiency may decrease.

[0006] An object of this invention is to provide an electronic device and a method for assembling an electronic device that can perform solar power generation more efficiently.

Means for Solving the Problems

[0007] To achieve the above objective, the present invention A cylindrical housing with at least an open top, A display unit located inside the aforementioned housing and exposed on the upper end side, A light-transmitting trim member having an annular shape along the inner circumferential surface of the housing, An annular solar cell located below the trim member, An annular elastic member that fixes the outer edge of the solar cell, Equipped with 、 The solar cell is separated from the trim member. This is an electronic device characterized by [this feature]. Furthermore, in order to achieve the above objective, another aspect of the present invention is: A cylindrical housing with at least an open top, A display unit located inside the aforementioned housing and exposed on the upper end side, A light-transmitting trim member having an annular shape along the inner circumferential surface of the housing, An annular solar cell located below the trim member, An annular elastic member that fixes the outer edge of the solar cell, A wiring section, one end of which is connected to the solar cell and transmits the power generated by the solar cell, Equipped with, At least the connection point between the solar cell and the wiring section has a protective coating. This is an electronic device characterized by the following features. [Effects of the Invention]

[0008] According to the present invention, it is possible to generate solar power more efficiently in electronic devices. [Brief explanation of the drawing]

[0009] [Figure 1] These are a front view (a) and a bottom view (b) of the electronic clock, which is an electronic device according to this embodiment. [Figure 2] This is a cross-sectional view passing through the center of an electronic clock. [Figure 3] This is a diagram explaining solar panels. [Figure 4] This is a plan view showing an example of a trim board. [Figure 5] This diagram shows the assembly and manufacturing process of an electronic clock.

Best Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a front view (a) and a bottom view (b) of an electronic clock 1 which is an electronic device of the present embodiment. The bottom view (b) shows the state where the back cover 18 (see FIG. 2) is removed. The electronic clock 1 includes a housing 12, a dial 13, hands 14, a partition plate 15 (partition member), a circuit board 20, and the like. Further, a solar panel 16 (solar cell) is visible through below the partition plate 15. Above the hands 14 is covered with a windshield glass 17 (light transmission member, see FIG. 2) having light transmissibility, here transparency. The hands 14 are rotatably positioned in a plane substantially parallel to the dial 13 between the dial 13 and the windshield glass 17 (on the dial 13). A decorative member 21 such as a bezel may be appropriately attached to the outside of the housing 1十二.

[0011] The housing 12 has a cylindrical shape with openings at the upper and lower ends. Inside the cylindrical space (inside the housing 12), in addition to the above-mentioned dial 13, hands 14, and partition plate 15, there are a wheel train mechanism which is a gear train for rotating the hands 14, a drive unit including a stepping motor, a circuit board 20, a battery 22 (secondary battery), and the like. The lower end of the housing 12 is sealed by the back cover 18 (see FIG. 2), and the upper end is sealed by the above-mentioned windshield glass 17 so that water, dust, etc. do not enter. The housing 12 is, for example, made of stainless steel, but is not particularly limited.

[0012] The dial 13 is exposed on the upper end side of the housing 12. On the upper surface (exposed surface) of the dial 13, markings 131 (hour numerals) for specifying the time are positioned at 1-hour intervals (every 30 degrees). Further, graduations or the like for indicating time in units of minutes and seconds may be further positioned.

[0013] ]The center of the dial 13 is the axis of rotation for at least some of the hands 14 (such as the hour hand, minute hand, and second hand). The other hands 14 may be small hands that rotate only within a small window 132 that occupies a portion of the dial 13. The dial 13 and the pointer 14 constitute the display unit of this embodiment.

[0014] The trim plate 15 is an annular-shaped member located near its upper end along the inner circumferential surface of the housing 12, and defines the user's viewing range of the dial 13 on the dial 13. "Along the upper end" here does not mean touching the upper end, as will be described later, and the upper surface of the trim plate 15 may be located below the upper end position of the housing 12. In this embodiment, the trim plate 15 of the electronic clock 1 is a light-transmitting material, such as resin. The trim plate 15 does not need to be transparent and may be a colored light-transmitting material.

[0015] The solar panel 16 is a solar cell that has a ring shape with multiple solar cells 160 (see Figure 3) arranged in a ring shape, is located below the trim plate 15, and generates electricity by receiving light that passes through the trim plate 15 and is incident on it. The ring shape here refers not only to a completely connected ring, but also to one with some gaps. The solar cell may be a film-like material that is thinner and less rigid than a plate-shaped panel.

[0016] The circuit board 20 is located on the back side inside the housing 12 and operates by power supplied by a wiring board 161 extending from the solar panel 16. The operation of the circuit board 20 includes operations related to the electronic clock, namely, operation as a timekeeping unit that counts the current time, and operation as a display control unit that operates a drive unit that rotates the pointer 14 according to the current time, thereby displaying the current time with the pointer 14.

[0017] Figure 2 is a cross-sectional view perpendicular to the bottom surface along the cross-sectional line AA in Figure 1(b), which passes through the center of the electronic clock 1. The display of the pointer 14 is omitted in this figure. Inside the casing 12, the drive unit for the hands 14 and the circuit board 20 are located below the dial 13, and the open lower surface of the casing 12 is sealed by the back cover 18. At the top, the crystal glass 17 (light-transmitting member) is fitted into the inner circumference of the casing 12.

[0018] The inner surface of the housing 12 widens in a stepped manner at the top, and the upper end of this widened portion forms an opening in the housing 12. The solar panel 16 is positioned along the stepped surface 121 of this annular, stepped portion. The trim plate 15, located above the solar panel 16, is fitted into the widened portion of the housing 12 via an annular packing 19 (elastic material). In other words, the trim plate 15 does not directly contact the housing 12.

[0019] The lower end of the packing 19 reaches the stepped surface 121, and the outer edge of the solar panel 16 is fixed to the stepped surface 121 by the packing 19. This eliminates the need to use adhesive materials such as glue or double-sided tape to fix the solar panel 16, and also avoids the deterioration in appearance caused by these adhesive materials being visible through the trim plate 15. Furthermore, because the adhesive material itself is thin, problems such as the solar panel 16 shifting from its intended position, in particular, lifting off the stepped surface 121 and coming into contact with the trim plate 15, are less likely to occur.

[0020] Furthermore, the packing 19 is partially sandwiched between the solar panel 16 and the trim plate 15, thereby separating the solar panel 16 and the trim plate 15. For this reason, the packing 19 may be L-shaped. The length of the portion of the packing 19 sandwiched between the solar panel 16 and the trim plate 15 (the width in the radial direction of the open surface of the housing 12) can be sufficiently shorter than the length of the trim plate 15. If the solar panel 16 and the trim plate 15 are in contact, moiré patterns will occur when viewed from above due to the refraction interference of light between them. Therefore, by fixing the solar panel 16 and the trim plate 15 in a separated state, the occurrence of moiré patterns is suppressed. Also, if the trim plate 15 is fitted into the solar panel 16 while it is in contact with it, scratches may occur on the contact surface, which can lead to a decrease in appearance and power generation efficiency. Therefore, separating the two can also suppress such scratches.

[0021] The packing 19 is made of an elastic resin material such as rubber, which is a commonly known material, and may also be waterproof. The inner surface of the widened portion of the housing 12 has an annular recess 122 in the part that contacts the packing 19. A portion of the compression of the packing 19 caused by the fitting of the trim plate 15 expands into this recess 122, which suppresses the packing 19 from expanding upward along the inner surface of the housing 12. This reduces the deterioration of the appearance of the electronic clock 1 when viewed from above.

[0022] One end of a wiring board 161 (wiring section) is connected to the solar panel 16, and the other end extends downward in a curve along the inner surface of the housing 12, with its tip connected to the circuit board 20. The wiring board 161 is flexible, and its curved shape can be easily adjusted. Two signal lines extend from the wiring board 161, and a voltage difference generated in response to power generation is applied between these signal lines, transmitting the generated power to the power supply circuit of the circuit board 20.

[0023] The wiring board 161 may be integrated with the solar panel 16, or it may be a separate component from the solar panel 16 and connected to and fixed to the solar panel 16. The point where the solar panel 16 branches off from the wiring board 161 is located outside the inner edge of the annular solar panel 16. This ensures that even when the minimum curvature of the curved shape of the wiring board 161 is determined, the wiring board 161 does not significantly protrude inward from the inner edge of the solar panel 16 (or if it does protrude, the width is minimal).

[0024] Figure 3 is a plan view of the solar panel 16 after it has been removed from the electronic clock 1 and unfolded. As shown in Figure 3(a), the solar panel 16 has multiple, in this case six, solar cells 160 arranged sequentially in the circumferential direction. The solar panel 16 has a notch 16a (cutout) on the inner edge (inner circumference side) of the annular portion, and the wiring board 161 is separated from this notch 16a. The tip of the wiring board 161 has a hole 16b, and the wiring board 161 is fixed to the circuit board 20 by a screw (including all screw members, such as screws and bolts) that passes through this hole 16b. The wiring board 161 is fixed so that the wiring extending to the wiring board 161 is in contact with the terminals of the circuit board 20, thereby supplying the power generated by the solar panel 16 to the circuit board 20.

[0025] When viewed from above, the cutout portion 16a, the connection position of the wiring board 161, and the stepped surface 121 below the cutout portion 16a are visible through the trim plate 15. Therefore, the visible portion of the stepped surface 121 may be processed to a color similar to that of the solar panel 16, or conversely, as shown in Figure 3(b), a coating film 162 may be provided by vapor-depositing metal so that the portion of the solar panel 16 including the cutout portion 16a and other parts are a similar color to the stepped surface 121, thereby creating a pattern overall. The pattern may be, for example, a striped pattern with the coating film 162 evenly distributed at a certain angle. The portion where metal is vapor-deposited will have reduced power generation efficiency (depending on the thickness and type of coating film 162, but for example, about 50% of the efficiency without the coating film 162), but if the vapor-deposited area is sufficiently small compared to the whole, there will be no problem with the overall reduction in power generation efficiency. For example, since there are gaps between the multiple solar cells 160 described above, and no power is generated there, the coating film 162 may be positioned to include these boundaries. This further suppresses the decrease in power generation efficiency.

[0026] Alternatively, as shown in the plan view of an example of a trim plate 15 in Figure 4, instead of the solar panel 16 having a coating film 162, the portion of the underside (bottom side) of the trim plate 15 corresponding to the part of the solar panel 16 that you want to make invisible may be covered with a coating film 151. In this case, the orientation of the trim plate 15 also needs to be appropriately aligned with the solar panel 16.

[0027] Figure 5 shows the assembly and manufacturing process of the electronic clock 1. In the assembly and manufacturing of the electronic clock 1, which is the electronic device assembly method of this embodiment, the solar panel 16 is placed on the stepped surface 121 of the housing 12, aligned with the fixing position of the wiring board 161 to the circuit board 20 (P1). Next, the gasket 19 is fitted along the inner surface of the housing 12 to hold down the outer edge of the solar panel 16 and temporarily fix the solar panel 16 in place (P2).

[0028] Next, the trim plate 15 is fitted and secured to the inner surface of the packing 19 (P3). Furthermore, the crystal glass 17 is fitted and secured to the housing 12 (P4). These processes P1 to P4 yield the exterior components of the electronic clock 1.

[0029] After the solar panel 16 and the crystal glass 17 are fixed in the appropriate positions, the internal components such as the dial 13, hands 14, and circuit board 20 are inserted into the exterior parts (housing 12), positioned, and connected (P5). The electrodes at the tip of the wiring board 161 are fixed to the circuit board 20 with screws or the like (P6). Then, after fixing other parts as necessary and installing the battery, the back cover 18 is fixed to the housing 12 with screw members, sealing the inside of the housing 12 (P7). Furthermore, the assembly of exterior components P1-P4 and the assembly of internal components P5-P7 may be separated and carried out in different manufacturing processes or at different manufacturing locations. Also, internal components may be inserted before the assembly of exterior components.

[0030] In this way, the solar panel 16 is temporarily fixed in place by the packing 19 and positioned before being placed on the stepped surface 121, making it easier to stably fix the solar panel 16 in the correct position. Furthermore, if misalignment occurs and it needs to be readjusted, it is easy to redo because it is not fixed with adhesive.

[0031] As described above, the electronic clock 1 of this embodiment comprises a cylindrical housing 12 with at least its upper end open, a dial 13 and a pointer 14 as a display unit located inside the housing 12 and exposed on the upper end side, a light-transmitting trim plate 15 having an annular shape along the inner circumferential surface of the housing 12, an annular solar panel 16 located below the trim plate 15, and an annular packing 19 that fixes the outer edge of the solar panel 16. In this way, by positioning the solar panel 16 below the light-transmitting trim plate 15, stable power generation can be achieved without being affected by the display screen. Furthermore, the dial 13 is no longer limited to a material that transmits light for the solar panel, reducing design constraints and allowing for a wider variety of electronic device designs. In addition, although the annular solar panel 16 can be inserted into the housing 12 even if there is a misalignment in the circumferential direction, if there is a misalignment, the relative position with other parts may not match in the end, making connection impossible or preventing other parts from fitting. Therefore, by allowing assembly while fixing with a packing 19 beforehand, such misalignment can be suppressed. Also, since no adhesive material is used, if misalignment occurs, reassembly is easy. Furthermore, it becomes unnecessary to consider the effect on internal parts due to the heating of thermosetting adhesives, which are commonly used, simplifying the selection of parts, thermal design, and temperature control.

[0032] Furthermore, the trim plate 15 is fitted into the housing 12 via the packing 19, the housing 12 has an annular stepped surface 121 whose inner circumferential width widens, and the solar panel 16 has its outer edge fixed on the stepped surface 121 by the packing 19. In this way, the solar panel 16 is sandwiched and fixed between the packing 19 and the stepped surface 121, making fixing easy. Furthermore, since the trim plate 15 is also fixed by the packing 19 that fixes the solar panel 16, the solar panel 16 and the trim plate 15 can be fixed stably in the correct orientation without taking up much space.

[0033] Furthermore, the solar panel 16 is separated from the trim plate 15. By separating the solar panel 16 from the light-transmitting trim plate 15, for example by slightly inserting a packing 19 in between, it is possible to prevent the occurrence of moiré patterns caused by contact and minimize a decrease in appearance.

[0034] Furthermore, the electronic clock 1 includes a wiring board 161, one end of which is connected to a solar panel 16 to transmit the power generated by the solar panel 16. At least the connection point of the solar panel 16 to the wiring board 161 has a protective coating. Since the light-transmitting trim plate 15 makes the solar panel 16 below visible, the design can be improved by appropriately applying a coating to conceal the connection members, connection marks, and cutouts 16a related to the connection.

[0035] Furthermore, the solar panel 16 has a notch 16a on its inner circumference, and the wiring board 161 is integrated with the solar panel 16 and extends from the notch 16a. By branching the wiring board 161 from the solar panel 16 near the outer edge, the wiring board 161 does not protrude into the housing 12 even when bent over a range of curvature greater than a certain radius without being bent at a sharp angle, thus not compressing the space for internal drive units and circuit boards. Furthermore, by avoiding bending, it is possible to suppress disconnection due to deterioration of signal lines at the bent portion.

[0036] Furthermore, the solar panel 16 may have a coating film 162 located on a portion of its upper surface that reduces visibility from above downwards. Since the trim plate 15 is light-transmitting, the solar panel 16 located below it is also visible, so the design can be improved by using the coating film 162 to the extent that it does not cause a decrease in power generation efficiency. Also, if the fixing points of the wiring board 161 connected to the solar panel 16 are visible, it does not look good, so the deterioration of appearance can be suppressed by making these parts difficult to see as appropriate.

[0037] Furthermore, the solar panel 16 may include a plurality of solar cells 160, and the coating film 162 may be positioned to overlap with the boundaries of the plurality of solar cells 160 in a plan view of the solar panel 16 from above. Since no power is generated at the boundary of the solar cell 160, overlapping this portion with the coating film 162 allows for a reduction in power generation efficiency while improving the design.

[0038] Furthermore, the trim plate 15 may have a coating film 151 on its underside that reduces the visibility of a portion of the solar panel 16 from above. In other words, even if the trim plate 15 has a coating film 151 instead of the solar cell 160, the design can be similarly improved. In this case, the visibility of the cut-out portion 16a, where a coating film 162 cannot be provided on the solar cell 160, can also be reduced collectively by the coating film 151, thereby appropriately suppressing any deterioration in appearance.

[0039] Furthermore, the electronic clock 1 comprises a dial 13, a pointer 14 rotatably positioned on the dial 13, and a circuit board 20. The circuit board 20 has a control unit that operates as a timekeeping unit for counting the current time and a display control unit for displaying the current time using the pointer 14. Thus, in an electronic clock 1 where portability and continuous operation are required to a high standard, by positioning the solar panel 16 below the bezel plate 15 and removing it from under the dial 13, it is possible to provide a more stable and continuous power supply while also improving its design.

[0040] Furthermore, in the assembly method of the electronic clock 1 of this embodiment, the display unit (dial 13 and hands 14) is housed inside a cylindrical housing 12 having at least an open upper end, with the upper end exposed. An annular solar panel 16 is placed on an annular stepped surface 121 that widens the inner circumferential surface of the housing 12, and the upper outer edge of the solar panel 16 is pressed against the stepped surface 121 by an annular packing 19. An annular light-transmitting trim plate 15 is fixed along the upper end of the inner circumferential surface of the housing 12 via the packing 19. In this way, since the trim plate 15 is fitted with the solar panel 16 fixed with the packing 19, the position of the solar panel 16, especially its position in the rotational direction, can be aligned with the connection position to the circuit board 20, and the trim plate 15 can be fixed in place. Therefore, the occurrence of readjustment due to misalignment can be reduced, and manufacturing effort can be reduced. Furthermore, even if misalignment occurs, unlike adhesive materials, the packing 19 can be removed and readjusted, thus reducing the occurrence of manufacturing defects and lowering costs.

[0041] It should be noted that the present invention is not limited to the embodiments described above, and various modifications are possible. For example, in the above embodiment, a flexible wiring board 161 is described as being connected to or integrally formed with the solar panel 16, but the invention is not limited to this. A wiring member that connects the electrode terminals of the solar panel 16 and the electrode terminals of the circuit board 20 in a straight line may be used, such as a coil spring. In this case, the electrode terminals of the circuit board 20 are located on the upper surface side of the circuit board 20.

[0042] Furthermore, the shape of the inner circumferential surface of the enclosure and the ring-shaped components do not necessarily have to be circular. For example, they may be elliptical, square, or have rounded corners.

[0043] Furthermore, in the above embodiment, the packing 19 was placed between the solar panel 16 and the trim plate 15 to separate them, but this is not the only way. Other objects may be inserted between them, or the shape of the inner surface of the housing 12 may be designed to allow separation even without anything being inserted. Alternatively, the solar panel 16 and the trim plate 15 do not need to be completely separated.

[0044] Furthermore, if the wiring board 161 is not integrated with the solar panel 16, the notched portion 16a may be omitted.

[0045] Furthermore, the stepped surface 121 may be the upper surface of a partial protrusion on the inner surface. In this case, the protrusion and the stepped surface 121 may not be perfectly annular, but may have partially interrupted sections. Even in this case, processing may be carried out so that the interior is not visible more than necessary through the light-transmitting trim plate 15.

[0046] Furthermore, although the above embodiment was described as an analog electronic clock with pointers, it is not limited to this. It may also be an electronic device equipped with a digital display unit such as a liquid crystal display screen. Moreover, the electronic device does not have to be an electronic clock whose main function is to display the current time. Furthermore, the specific configurations, processing operations, and procedures shown in the above embodiments can be modified as appropriate without departing from the spirit of the present invention.

[0047] Although several embodiments of the present invention have been described, the scope of the present invention is not limited to the embodiments described above, but includes the scope of the invention as described in the claims and its equivalents. The invention described in the claims initially attached to the application for this patent is listed below. The claim numbers listed below are the same as those in the claims initially attached to the application for this patent.

[0048] [Note] <Claim 1> A cylindrical housing with at least an open top, A display unit located inside the aforementioned housing and exposed on the upper end side, A light-transmitting trim member having an annular shape along the inner circumferential surface of the housing, An annular solar cell located below the trim member, An annular elastic member that fixes the outer edge of the solar cell, An electronic device characterized by having the following features. <Claim 2> The trim member is fitted into the housing via the elastic member, The housing has an annular stepped surface whose inner circumferential width widens, The solar cell is fixed to the stepped surface by the elastic member at its outer edge. The electronic device according to claim 1. <Claim 3> The electronic device according to claim 1 or 2, characterized in that the solar cell is separated from the trim member. <Claim 4> It includes a wiring section at one end that is connected to the solar cell and transmits the power generated by the solar cell, The electronic device according to any one of claims 1 to 3, characterized in that at least the connection point of the solar cell to the wiring portion has a coating film. <Claim 5> The aforementioned solar cell has a notch on its inner circumference, The aforementioned wiring section is integrated with the solar cell and extends from the notch. The electronic device according to feature 4. <Claim 6> The electronic device according to any one of claims 1 to 5, characterized in that the solar cell has a coating film located on the upper surface of a part of the solar cell that reduces visibility from above to below. <Claim 7> The solar cell includes a plurality of solar cells, The coating film is positioned to overlap with the boundaries of the plurality of solar cells in a plan view of the solar cell from above. The electronic device according to claim 6, characterized in that it is a feature of the electronic device. <Claim 8> The electronic device according to any one of claims 1 to 5, characterized in that the trim member has a coating film on its lower surface that reduces the visibility of a portion of the solar cell from above. <Claim 9> A timekeeping unit that counts the current time, A display control unit that displays the current time on the display unit, The electronic device according to any one of claims 1 to 8, characterized by comprising: <Claim 10> An annular solar cell is fixed inside a cylindrical housing having at least an open upper end, along the inner circumferential surface of the housing by an annular elastic member. An annular, light-transmitting trim member is fixed above the aforementioned solar cell. The display unit is housed inside the aforementioned housing so as to be exposed on the upper end side. A method for assembling electronic equipment characterized by the following features. [Explanation of symbols]

[0049] 1. Electronic clock 12 cabinets 121 Step surface 122 Indentation 13 Dial 131 Signs 132 Small window 14 Guidelines 15. Trim board 16 Solar Panels 16a Notched section 16b Hole 161 Wiring board 162 Coating membrane 17. Crystal 18 Case back 19 Gasket 20 Circuit boards 21 Decorative components 22 Batteries

Claims

1. A cylindrical housing with at least an open top, A display unit located inside the aforementioned housing and exposed on the upper end side, A light-transmitting trim member having an annular shape along the inner circumferential surface of the housing, An annular solar cell located below the trim member, An annular elastic member that fixes the outer edge of the solar cell, Equipped with, The solar cell is separated from the trim member. An electronic device characterized by the following features.

2. A wiring section having one end connected to the solar cell and transmitting the power generated by the solar cell, The electronic device according to claim 1, characterized in that at least the connection point of the solar cell to the wiring portion is covered with a coating film.

3. A cylindrical housing having at least an open upper end, A display unit located inside the aforementioned housing and exposed on the upper end side, A light-transmitting trim member having an annular shape along the inner circumferential surface of the housing, An annular solar cell located below the trim member, An annular elastic member that fixes the outer edge of the solar cell, A wiring section, one end of which is connected to the solar cell and transmits the power generated by the solar cell, Equipped with, At least the connection point between the solar cell and the wiring section has a protective coating. An electronic device characterized by the following features.

4. The trim member is fitted into the housing via the elastic member, The housing has an annular stepped surface whose inner circumferential width widens, The solar cell is fixed to the stepped surface by the elastic member at its outer edge. The electronic device according to any one of claims 1 to 3.

5. The electronic device according to claim 2 or 3, characterized in that the coating film is located on the upper surface of a part of the solar cell and reduces visibility from above to below.

6. The aforementioned solar cell has a notch on its inner circumference, The aforementioned wiring section is integrated with the solar cell and extends from the notch. The electronic device according to claim 2 or 3.

7. The electronic device according to claim 1, characterized in that the solar cell has a coating film located on the upper surface of a part of the solar cell that reduces visibility from above to below.

8. The solar cell includes a plurality of solar cells, The coating film is positioned to overlap with the boundaries of the plurality of solar cells in a plan view of the solar cell from above. The electronic device according to feature 7.

9. The electronic device according to claim 1, characterized in that the trim member has a coating film on its lower surface that reduces the visibility of a portion of the solar cell from above.

10. The solar cell or the trim member has the coating film The electronic device according to claim 2 or 3.

11. A timekeeping unit that counts the current time, A display control unit that displays the current time on the display unit, The electronic device according to any one of claims 1 to 3, characterized by comprising:

12. An annular solar cell is fixed inside a cylindrical housing having at least an open upper end, along the inner circumferential surface of the housing by an annular elastic member. An annular, light-transmitting trim member is fixed above the solar cell, spaced apart from the solar cell. The display unit is housed inside the aforementioned housing so as to be exposed on the upper end side. A method for assembling electronic equipment characterized by the following features.

13. Inside a casing having a cylindrical shape with at least an open upper end, an annular solar cell is fixed along the inner circumferential surface of the casing by an annular elastic member, with one end of the solar cell connected to a fixing position of a wiring portion that transmits the power generated by the solar cell, An annular, light-transmitting trim member is fixed above the aforementioned solar cell. The display unit is housed inside the aforementioned housing so as to be exposed on the upper end side. At least the connection point between the solar cell and the wiring section has a protective coating. A method for assembling electronic equipment characterized by the following features.

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