JPH10239453A - Display part structural body with solar battery and electronic equipment and clock with solar battery using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a display part structural body with solar battery in which the working property in assembling can be improved, a display part structure can be surely and precisely assembled, and no interference fringe is generated on a display surface. SOLUTION: A solar battery receiving ring 24 has a slender bridge part 22c, and a hook part 22d protruded on the intermediate part of the bridge part 22c. The hook part 22d is extended in a wall form along the annular shape of a whole solar battery receiving ring 22, and it has a first hook end part 22d-1 protruded substantially horizontally from the part closer to the lower part of the inside wall surface in the center part and a pair of second hook end parts 22e-2 protruded inward substantially horizontally above both sides of the first hook end part 22d-1. The first hook end part 22d-1 is formed so as to hold the outer edge part of a solar battery 23, and the second hook end parts 22d-2 are formed so as to hold the outer edge part of a light transmitting plate 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display unit structure with a solar cell, an electronic device with a solar cell, and a timepiece.
The present invention relates to a display unit structure suitable for assembling these display units with high accuracy.

[0002]

2. Description of the Related Art Conventionally, a solar cell wristwatch having a solar cell disposed on a display portion to which a dial is to be attached has been commercially available. By arranging the light-receiving surface of the solar cell on the display unit, this type of wristwatch with a solar cell eliminates the need to form a light-receiving surface in other parts, and is compact as a whole despite having the solar cell. There is an advantage that it can be achieved.

However, when the light receiving surface of the solar cell is arranged on the display unit, the color tone of the light receiving surface on the surface of the solar cell and the planar element structure seen on the light receiving surface appear on the display unit as it is. There is a problem that it gets worse.
For this reason, by disposing a translucent plate on the light receiving surface of the solar cell, the color tone of the display unit may be changed, or the structure of the light receiving surface may be made less visible to improve the appearance. In this case, it is necessary to control the light transmittance of the translucent plate to balance the amount of light received by the solar cell with the appearance of the display unit.

FIGS. 8 to 10 show examples of the structure of a conventional wristwatch equipped with a solar cell. 8 and 9 are schematic cross-sectional views showing the display unit structure of the main body structure, and FIG. 10 is a plan view of the display unit structure. As shown in FIG. 8, a solar cell receiving ring 15 in which a leg 15 b is fitted into a concave portion 10 a of the main plate 10 is provided on the main plate 10 fixed inside the wristwatch. A disk-shaped solar cell 16 is adhered on the surface of the solar cell receiving ring 15. Positioning recesses 16 b are formed at three positions on the outer edge of the solar cell 16, and positioning protrusions 15 a protruding upward are provided at three positions on the outer edge of the solar cell receiving ring 15. Solar cell 16
Are adhesively fixed with the positioning recesses 16b engaged with the positioning projections 15a.

[0005] A translucent plate 17 is placed on the solar cell 16, and fitting recesses 17 b are provided at two locations on the outer edge of the translucent plate 17. This fitting recess 17b is
The translucent plate 17 is positioned and held by being fitted to the positioning projection 15a.

The solar cell 16 is formed by stacking a semiconductor layer such as amorphous silicon on the surface of a stainless steel
A transparent electrode made of ITO (indium tin oxide) or the like is formed on the surface of the substrate. As shown in FIG. 10, the solar cell 16 is provided with four divided portions 16d divided in a plane. The transparent electrodes provided for each of the divided portions 16d are connected to connection terminals 16c which are conductively connected to the end circuit board 19, respectively. As shown in FIG. 9, the lower end of a conductive coil spring 12 comes into contact with a conductive pad (not shown) provided on a circuit board 11 fixed to a lower portion of the ground plate 10. The upper end of the solar cell 16 in the end circuit board 19
Is in contact with the electrode portion provided on the part that goes around the back side of the. With this structure, the electric power generated by the solar cell 16 is supplied to the circuit board 11 via the coil spring 12 and stored in a secondary battery (not shown) such as a large-capacity capacitor.

When assembling the above-mentioned conventional display portion structure, first, the solar cell 16 is positioned and bonded on the solar cell receiving ring 15, and then the translucent plate 17 is fitted to the positioning protrusion 15a to perform positioning. And a semi-transparent plate 1 from above by a dial ring or the like (not shown).
7 was pressed down and fixed.

[0008]

However, in the above-described conventional display portion structure, the fitting recess 17b of the translucent plate 17 is fitted to the positioning projection 15a of the solar cell receiving ring 15.
If the translucent plate 17 is to be fixed with an interference, the translucent plate 17 receives stress from the plurality of positioning protrusions 15a, and the translucent plate 17 is warped by the stress. If the translucent plate 17 is warped, it becomes difficult to attach the hands and the display surface may be distorted even after the product is completed. On the other hand, contrary to the above, if a design is made such that even a slight gap is formed between the positioning protrusion 15a and the fitting concave portion 17b, the translucent plate 17 may come off when it is turned upside down during assembly,
The translucent plate 17 cannot be positioned, and the translucent plate 17 moves on the solar cell 16, which is a factor of deteriorating workability during assembly.

The conductive connection between the solar cell 16 fixed to the solar cell receiving ring 15 and the internal circuit is secured by the coil spring 12, but the solar cell 16 is connected to the solar cell receiving ring 15 during assembly. On the other hand, if it is not fixed, conduction through the coil spring 12 cannot be ensured, so that an operation test of the solar cell 16 cannot be performed. Therefore, the solar cell 16
Must be fixed to the solar cell receiving ring 15 as early as possible in the process of assembling the display unit structure.
The conventional structure does not have a structure for fixing the solar cell 16 alone or in a state where only the translucent plate 17 is attached. Had adhered to. Therefore, a solar cell bonding process is required at the time of assembly, which complicates the operation. Also, once the solar cell is bonded, it becomes difficult to disassemble it. There was a problem of causing trouble.

Further, although the translucent plate 17 is pressed against the light receiving surface of the solar cell 16, interference fringes (Newton rings) may occur between the translucent plate 17 and the solar cell 16. In this case, however, there is a problem that the appearance of the display surface is deteriorated due to the interference fringes and the quality of the product is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to improve the workability at the time of assembling, to assemble the display section structure reliably and accurately, and to provide a display surface with interference. An object of the present invention is to realize a structure that does not generate stripes.

[0012]

Means taken by the present invention for solving the above-mentioned problems include a solar cell having a light-receiving surface arranged on a display unit and a predetermined solar cell arranged on the front side of the light-receiving surface. A translucent plate having a light transmittance of, and a solar cell receiving member supporting the solar cell from the back side, the solar cell receiving member, protruding to the front side of the translucent plate, A display unit structure with a solar cell, comprising a light-transmitting plate holding hook portion having a hooked end protruding on a front surface of the light-transmitting plate.

According to this means, the light-transmitting plate can be held on the solar cell side by the hooking end of the light-transmitting plate holding hook projecting above the front surface of the light-transmitting plate. Since the light-transmitting plate and the solar cell can be held on the solar cell receiving member while suppressing the warpage and displacement of the solar cell, the light-transmitting plate and the solar cell do not come off from the solar cell receiving member, and the solar cell can be assembled Workability at the time can be improved.
When the light-transmitting plate and the solar cell are held in contact with each other, the hooking ends prevent the light-transmitting plate and the solar cell from escaping to the front side. Therefore, the step of bonding the solar cell to the solar cell receiving member can be omitted.

The translucent plate holding hook is provided on the peripheral edge of the solar cell receiving member, and is formed so as to protrude from the outer edge of the translucent plate to the front side. It is particularly preferable that the light-transmitting plate is configured to protrude from the outer edge of the light-transmitting plate onto the front surface of the light-transmitting plate. In this case, furthermore, a concave portion (a notch portion) formed toward the inner peripheral side is formed in the outer edge portion of the solar cell, and the light-transmissive plate holding hook portion is inserted through the concave portion into the front side of the solar cell. With this configuration, the translucent plate holding hook portion can be formed without protruding in the outer peripheral direction.

Here, the light-transmitting plate holding hook portion is deformed by pressing the light-transmitting plate against the solar cell from the front side, whereby the light-transmitting plate holding hook portion is deformed.
It is preferable that the hooking end is configured to engage with the translucent plate.

According to this means, when attaching the light-transmitting plate, the light-transmitting plate holding hook is deformed only by pressing the light-transmitting plate, and the hooked end thereof is engaged with the light-transmitting plate. Therefore, the translucent plate can be easily housed on the back side of the hooking end, so that the operation of attaching the translucent plate can be easily performed.

In this case as well, the translucent plate holding hook is provided on the peripheral edge of the solar cell receiving member, and is formed so as to protrude from the outer edge of the translucent plate to the front side. It is particularly preferable that the hooking end is disposed on the inner peripheral side of the outer edge of the light transmitting plate so that the hooking end projects toward the front side of the light transmitting plate. In such a configuration, the light-transmitting plate holding hook is deformed to the outer peripheral side of the light-transmitting plate when the light-transmitting plate is pushed in from the front side, and the hook ends are formed on the outer edge of the light-transmitting plate. It is desirable to be configured to move outward.

Further, the solar cell receiving member may be provided with a solar cell holding hook portion which protrudes from the portion without the solar cell toward the front side and has a hooked end protruding above the front surface of the solar cell. preferable.

According to this means, the solar cell holding hook is provided in addition to the translucent plate holding hook.
The solar cell can be separately held by the hooked end, and instead of holding the solar cell together with the translucent plate, it is possible to independently hold only the solar cell without being affected by variations in the thickness of the translucent plate. Since it is possible to more securely hold and fix the solar cell, it is also possible to perform various inspections of power generation without attaching a translucent plate, so that the solar cell bonding step can be omitted. .

In this case, it is preferable that the solar cell holding hook is provided with a support for supporting the translucent plate.

According to this means, since the support portion for supporting the translucent plate is provided on the solar cell holding hook portion,
Since the light-transmitting plate can be supported independently of the solar cell without providing a separate support portion, the light-transmitting plate can be securely held with a simple structure, and the light-transmitting plate and Since a predetermined gap can be provided between the solar cell and the solar cell, the occurrence of interference fringes can be prevented.

Further, the translucent plate and the solar cell are formed so as to have mutually non-planar shapes, and at least a region where the solar cell does not exist is provided at least on the back side of the translucent plate. It is preferable that the battery receiving member is provided with a support projection that projects toward the front side in the region and that supports the translucent plate.

According to this means, since the translucent plate can be supported from the back side by the support projection, the translucent plate can be more securely held, and the translucent plate and the solar cell can be held. Can be provided with a predetermined gap between them, so that the occurrence of interference fringes can be prevented.

Each of the above-described display unit structures with a solar cell is an electronic device with a solar cell, for example, a calculator, a portable radio,
It can be used for mobile phones, pagers, electronic watches and the like.

Further, the above-mentioned display structure with a solar cell can be used for a clock with a solar cell, for example, an electronic timepiece, a wristwatch, a table clock or the like.

[0026]

Next, an embodiment according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a main part showing a display unit structure in a main body case of a wristwatch according to the present embodiment. In the display unit structure of the present embodiment, the main plate 21 fixed inside the body case (body) 20 of the wristwatch
Synthetic resin solar cell receiving ring 2 attached on top
2, a solar cell 23 disposed on the front side of the solar cell receiving ring 22, and a translucent plate 24 disposed on the front side of the solar cell 23.

The periphery of the light-transmitting plate 24 is the dial ring 2
5, the solar cell 23 and the translucent plate 24 are sandwiched between the solar cell receiving ring 22 and the dial ring 25. Center holes 23d and 24d are formed in the solar cell 23 and the translucent plate 24, and the pointer driving unit 26 projects through the center holes to the front side. On the front side of the display unit structure, a cover glass 28 fixed to a glass rim 27 attached to the main body case 20 is arranged, and on the back side of the display unit structure, a secondary battery, a clock movement, etc. (not shown) are accommodated. And on the back side,
A back cover 29 fitted and fixed to the main body case 20 is provided.

In the description, the front side refers to the arrangement direction of the cover glass 28, ie, the upper side in the figure, and the back side refers to the arrangement direction of the back cover 29 opposite to the front side, ie, the lower side in the figure. .

The translucent plate 24 is made of various materials such as acrylic resin, polycarbonate resin, various kinds of glass and ceramics, and may be either a transparent plate having a predetermined light transmittance or a translucent plate. If necessary, an adhesion layer constituting a predetermined pattern, character, or the like may be formed on the front surface or the back surface by a method such as coating or printing. FIG. 1 shows a light-transmitting plate 2
4 shows an example in which the adhered layer 30 is formed by printing on the back surface of No. 4. Depending on its material and thickness, the translucent plate 2
4 may be formed almost entirely so as to have the above-mentioned predetermined light transmittance, or may be formed in an appropriate plane pattern. The adhesion layer 30 can be formed by applying a paint containing a phosphorescent phosphor, for example, and in this case, night display is also possible. Further, by forming the deposition layer 30, the distance between the light receiving surface (front surface) 23a of the solar cell 23 and the back surface of the translucent plate 24 is made sufficiently larger than the wavelength of visible light, and the translucent plate is formed. It is also possible to prevent the occurrence of interference fringes between the light receiving surface 24 and the light receiving surface 23a.

FIG. 2 shows a plan view of the solar cell receiving ring 22, the solar cell 23 and the translucent plate 24 in the above-mentioned display portion structure. In the figure, the solid line indicates the shape of the solar cell receiving ring 22, the dashed line indicates the shape of the solar cell 23, and the broken line indicates the shape of the translucent plate 24. On the upper surface (front surface) of the solar cell receiving ring 22, a pair of positioning protrusions 22a formed at opposing positions are formed. The positioning projections 22a are fitted into fitting recesses 23b and 24b formed on the outer edges of the solar cell 23 and the translucent plate 24, respectively.
The planar positions of the solar cell 23 and the translucent plate 24 are regulated and positioned.

At four positions of the solar cell receiving ring 24, a narrow bridge portion 22c formed by providing a flat elliptical opening is formed, and a hook is provided on an intermediate portion of the bridge portion 22c. The portion 22d is formed to protrude. The details of this part are shown enlarged in FIG.
As shown in FIG. 3, the hook portion 22 d extends in a wall shape along the entire ring shape of the solar cell receiving ring 22, and a first hook protruding substantially horizontally from a lower portion of an inner wall surface at a central portion thereof. End 22d-1 and the first hooked end 2
A pair of second hooking end portions 22d-2 projecting substantially horizontally inward above both sides of 2d-1.

The first hooking end 22d-1 is formed such that the rear surface of the solar cell receiving ring 22 is
3 is formed so as to have substantially the same height as the thickness of the solar cell 2.
3 and the total thickness of the light-transmitting plate 24 (if the coating layer 30 is formed on the back surface of the light-transmitting plate 24,
(Including the thickness). Also, the first hooking portion 22d-1 and the second hooking end 22d-2 are formed with inclined surfaces 22d-1a and 22d-2a which are inclined toward the inner rear side on the respective upper surfaces.

The structure of the bridge portion 22c and the hook portion 22d shown in FIG. 3 can be realized with a simple mold structure when the solar cell receiving ring 22 is formed by resin molding such as injection molding. ing. That is, the front surface side and the rear surface side of the solar cell receiving ring 22 can be formed by opposing mold portions, and can be easily formed by a simple two-part mold structure.

The outer shape of the solar cell 23 is shown in FIG.
As shown in the figure, although it overlaps with the first hooking end 22d-1,
The second hooking end 22d-2 is formed so as not to overlap with the second hooking end 22d-2, and the outer edge shape of the translucent plate 24 overlaps the second hooking end 22d-2, but does not overlap the first hooking end 22d-2. Are formed so as not to overlap.

The hook portion 22d is connected to the bridge portion 22.
Due to the flexibility caused by the narrow width of c, the solar cell receiving ring 22 can be tilted in the radial direction, and can be moved vertically in the figure. For this reason, when the solar cell 23 is pressed from the front side (upper side) toward the front surface of the solar cell receiving ring 22, the outer edge of the solar cell 23 comes into contact with the inclined surface 22d-1a of the first hooking end 22d-1. Further, by further pressing the solar cell 23, the entire hook portion 22d moves downward while slightly tilting to the outer peripheral side, and the outer edge of the solar cell 23 is
2d-1a, it slides down beyond the tip of the first hooking end 22d-1 and then hooks 2d-1a.
2 returns to the original posture.

Since the height of the first hooking end 22d-1 is substantially equal to the thickness of the solar cell 23, the solar cell 23 is connected to the front surface of the solar cell receiving ring 22 and the first hooking end 22d-. 1 is sandwiched between them. Here, the height of the first hooking end 22d-1 may be formed slightly higher than the thickness of the solar cell 23. In this case, solar cell 2
There will be some play in the mounting state of 3,
The first hooking end 22d-1 is the light receiving surface 23a of the solar cell 23.
By being arranged on the upper side, it does not come off from the solar cell receiving ring 22.

When the solar cell 23 is mounted on the solar cell receiving ring 22 as described above, the translucent plate 24 is then arranged on the front surface of the solar cell 23. Translucent plate 24
Is pressed toward the solar cell receiving ring 22 in the same manner as the solar cell 23, and the outer edge thereof is
When a stress is applied to the rear surface side by contacting the inclined surface 22d-2a of -2, the hook portion 22 moves slightly downward while falling to the outer peripheral side in the same manner as described above, and the outer edge portion of the translucent plate 24 is inclined. The hook portion 22d slides on the surface 22d-2a and goes down beyond the second hooking end portion 22d-2, and then returns to the original posture.

When the outer edge of the light-transmitting plate 24 is thus housed below the second hooking end 22d-2, the light-transmitting plate 24 is moved to the second hooking end as shown in FIG. Temporarily held by the unit 22d-2. The height of the second hooking end 22d-2 is
Since the solar cell 23 and the light-transmitting plate 24 are formed so as to have substantially the same thickness as that of the solar cell 23 and the light-transmitting plate 24, the light-transmitting plate 24 is held between the solar cell 23 and the second hooking end 22 d-2. It is supposed to be. However, since the adhered layer 30 is formed on the back surface of the translucent plate 24 by printing or the like,
In the case where the thickness of the adhered layer 30 by printing varies, the height of the second hooking end is adjusted by the solar cell 23 and the translucent plate 24.
Is preferably formed slightly higher than the thickness of the superposed layers.

Here, as described later in detail, the light transmitting plate 2
4 is formed so that the outer edge of the first hooking end 22d-1 is in contact with the front surface of the first hooking end 22d-1, so that the light transmitting plate 24 is formed between the first hooking end 22d-1 and the second hooking end 22d-2. By holding it in between, the position of the rear surface of the light-transmitting plate 24 may be regulated on both the front side and the rear side. In this case, a desired gap can be formed between the light-transmitting plate 24 and the light receiving surface 23a of the solar cell 23 even if the deposition layer 30 is not formed.

According to the present embodiment, the formation of the hook portion 22d allows the solar cell 23 and the translucent plate 24 to be pressed from the front side, thereby complicating the work of attaching the solar cell 23 to the solar cell receiving ring 22. Therefore, the solar cell 23 and the translucent plate 24 can be reliably held on the solar cell receiving ring 22 without performing. Therefore, during the assembly operation, the solar cell 2
3 and the translucent plate 24 do not fall off, and the outer edge of the translucent plate 24 does not need to be pressed in the radial direction by the fitting projection provided on the solar cell receiving ring 22.
The light-transmitting plate 24 has a structure in which warpage hardly occurs. Note that, when the solar cell 23 or the translucent plate 24 is warped due to a positioning structure or the like,
The first hooking end and the second hooking end serve to limit the amount of warpage.

Since the hook portion 22d is formed on the bridge portion 22c, the hook portion 22d is connected to the main body of the solar cell receiving ring 22 with flexibility. In addition, the translucent plate 24 can be easily engaged with the hook 22d. In order to facilitate the engagement by the hook portion 22d, the hook portion 22d is required.
Instead of forming d on the bridge portion 22c, the hook portion 22d itself may have flexibility.

In the present embodiment, the hook portion 22d is provided with a first hooking end that engages with the solar cell 23 and a second hooking end that engages with the translucent plate 24. 2
3 and the light-transmitting plate 24 can be held in a suitable state, respectively, so that they can be held more reliably, and the solar cell 23 and the light-transmitting plate 24 can be positioned more accurately as much as possible. Can be.

According to the structure of this embodiment, the solar cell 23
Since the process of bonding is omitted,
And it can be assembled quickly.

In the above embodiment, the hook portion 22d
Although the positioning projections 22a are provided separately to position and guide the solar cell 23 and the translucent plate 24, the hook portions 22d and these positioning structures or guiding structures may be integrally formed. For example, the inner wall surface of the hook portion 22d on the back side of the first hooking end portion 22d-1 is formed as a positioning or guiding wall surface for the solar cell 23, and the back surface of the second hooking end portion 22d-2 of the hook portion 22d. The inner wall surface on the side may be formed as a positioning or guiding wall surface for the translucent plate 24.

In the above embodiment, the hook portion 22d
At the first hooking end 22d-1 for the solar cell 23
And a second hooking end 22d-2 for the light-transmitting plate 24, but a hook having a first hooking end and a second hooking end are provided at different portions. The provided hook portion may be provided separately.

Next, various modifications of the display unit structure having a structure different from that of the above embodiment will be described. FIG.
In the modified example shown in FIG. 1, a solar cell 33 and a light-transmitting plate 34 having a deposition layer 40 are sequentially arranged on the front side of a solar cell receiving ring 32, and the same bridge as in the above embodiment is provided on the solar cell receiving ring 32. A portion 32c and a hook portion 32d are provided.
However, the hook portion 32d of this modification is provided with a translucent plate 34.
And only the hooking end 32d-1 for engaging with. The hook end 32d-1 has an inclined surface 32d-1a, and holds the translucent plate 34 similarly to the second hook end 22d-2 of the above embodiment. In this modification, a hooking end 32d-1 is provided on the front side of the translucent plate 34.
Is present, and no hook end is provided only for the solar cell 33. However, the holding of the translucent plate 34 results in the solar cell 23 also being transparent with the solar cell receiving ring 32. It is configured to be held between the optical plate 34. In this modification, the solar cell 23 and the translucent plate 34 can be held with a simpler structure.

In the modification shown in FIG. 5, a solar cell 43 and a translucent plate 44 are sequentially arranged on the front side of a solar cell receiving ring 42, and the same bridge portion 42c and hook And a portion 42d. The hook portion 42d has only a single hooking end portion 42d-1 having an inclined surface 42d-1a. In this modification, a support projection 42e is provided on the front surface of the solar cell receiving ring 42.
Are formed, and the translucent plate 44 is supported by the support protrusions 42e. As a result, the translucent plate 44
It is held between the support projection 42e and the hook end 42d-1. The solar cell 43 is adhered on the front surface of the solar cell receiving ring 42 or fixed by a fitting portion separately provided on the solar cell receiving ring 42. In this modification, the gap between the solar cell 43 and the light-transmitting plate 44 is set to a predetermined value without providing an adhesion layer on the front surface of the solar cell 43 or the back surface of the light-transmitting plate 44. And the occurrence of interference fringes can be prevented.

In the structure having the hook portions 42d and the support protrusions 42e shown in FIG.
The plane positions of d and the support protrusion 42e are arbitrary, but it is more preferable that the hook portion 42d and the support protrusion 42e are formed at different positions in plan view. this is,
Forming the hook portion 42d and the support protrusion 42e at the same position makes molding difficult, and furthermore, in order to firmly fix the translucent plate, the hook portion 42d and the support protrusion 42e abut on the translucent plate. This is because it is necessary to match the facing distance of the portions with the thickness of the light-transmitting plate with high accuracy, and it becomes difficult to manufacture the required shape accuracy.

In the modification shown in FIG. 7, a solar cell 53 and a light-transmitting plate 54 are sequentially arranged on the front side of a solar cell receiving ring 52, and a bridge 52c is provided in the solar cell receiving ring 52. Form a hook portion 52d on the top,
Further, the hook portion 52d is provided with a first hooking end portion 52d-1 and a second hooking end portion 52d-2 similar to those in the above embodiment. However, in this modified example, the first hooking end 52d-1 is extended in the direction in which the annular main body of the solar cell receiving ring 52 extends (perpendicular to the drawing), and the outer edge of the translucent plate 54 is formed. A flat support surface 52d-1b (shown by a dotted line in the figure) formed by cutting an inclined surface provided on the front surface side of the first hooking end portion 52d-1 into a step-like shape is provided at a position overlapping with the first hooking end portion 52d-1. ing. This flat support surface 52d
-1b supports the outer edge of the light-transmitting plate 54 from the back side in a state where the light-transmitting plate 54 is engaged below the second hooking end 52d-2, and the light-transmitting plate 54 and the sun A predetermined gap is formed between the battery and the battery 53. The flat support surface 52d-1b is formed at a position shifted from the plane position of the second hooking end, so that the molding becomes easier due to the above-described mold structure.

According to this modification, the solar cell 53 is not bonded, the solar cell 53 is not fixed by another fixing structure, and no spacer is provided on the solar cell receiving ring 52 or other parts. , The translucent plate 54 and the solar cell 53 can be separately held. Also,
Since the gap between the translucent plate 54 and the solar cell 53 can be appropriately formed, the occurrence of interference fringes can be prevented with a simple and few detailed structures.

The embodiments and the modifications described above are
Although the present invention is applied to a display unit of a wristwatch, the present invention is not limited to a wristwatch. The present invention can be widely applied to a display unit structure itself in which conductive plates are sequentially arranged and various articles provided with the display unit structure. In particular, with respect to each of the above electronic devices and watches, in order to reduce the size of the product, it is possible to improve the workability of assembly, improve the appearance of the display unit, and reduce the manufacturing cost. It has a great effect.

[0052]

As described above, according to the present invention, the following effects can be obtained.

According to the first aspect, the light-transmitting plate can be held on the solar cell side by the hooking end of the light-transmitting plate holding hook projecting over the front surface of the light-transmitting plate. Since the translucent plate and the solar cell can be held on the solar cell receiving member while suppressing warpage and displacement of the plate, the translucent plate and the solar substrate do not come off from the solar cell receiving member, Workability during assembly can be improved.
When the light-transmitting plate and the solar cell are held in contact with each other, the hooking ends prevent the light-transmitting plate and the solar cell from escaping to the front side. Therefore, the step of bonding the solar cell to the solar cell receiving member can be omitted.

According to the second aspect, when the light-transmitting plate is attached, the light-transmitting plate holding hook is so formed that the hooked end moves to a portion without the light-transmitting plate only by pressing the light-transmitting plate. Since the light-transmissive plate is deformed, the light-transmissive plate can be easily housed on the back side of the hooking end, so that the work of attaching the light-transmissive plate can be easily performed.

According to the third aspect, a solar cell holding hook is provided in addition to the translucent plate holding hook.
The solar cell can be separately held by the hooked end, and instead of holding the solar cell together with the translucent plate, it is possible to independently hold only the solar cell without being affected by variations in the thickness of the translucent plate. Since it is possible to more securely hold and fix the solar cell, it is also possible to perform various inspections of power generation without attaching a translucent plate, so that the solar cell bonding step can be omitted. .

According to the fourth aspect, since the solar cell holding hook is provided with the support for supporting the light-transmitting plate,
Since the light-transmitting plate can be supported independently of the solar cell without providing a separate support portion, the light-transmitting plate can be securely held with a simple structure, and the light-transmitting plate and Since a predetermined gap can be provided between the solar cell and the solar cell, the occurrence of interference fringes can be prevented.

According to the fifth aspect, since the light-transmitting plate can be supported from the back side by the supporting projections, the light-transmitting plate can be more reliably held, and the light-transmitting plate and the sun can be held. Since a predetermined gap can be provided between the battery and the battery, the occurrence of interference fringes can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a structure of an embodiment of a display unit structure with a solar cell according to the present invention.

FIG. 2 is a plan view showing a planar structure of the embodiment.

FIG. 3 is an enlarged perspective view showing a structure of a hook portion provided on the solar cell receiving ring in the embodiment.

FIG. 4 is a schematic sectional view showing a modification of the embodiment.

FIG. 5 is a schematic sectional view showing a modification of the embodiment.

FIG. 6 is a schematic sectional view showing the structure of the embodiment.

FIG. 7 is a schematic sectional view showing a modification of the embodiment.

FIG. 8 is a schematic sectional view showing the structure of a conventional display unit structure with a solar cell.

FIG. 9 is a schematic cross-sectional view showing a conduction structure of a solar cell in a conventional display unit structure with a solar cell.

FIG. 10 is a plan view showing a planar structure of a conventional display unit structure with a solar cell.

[Explanation of symbols]

 Reference Signs List 22 solar cell receiving ring 22c bridge part 22d hook part 22d-1 first hooking end 22d-2 second hooking end 23 solar cell 23a light receiving surface 24 translucent plate 25 dial ring

Claims (7)

[Claims] 1. A solar cell having a light receiving surface disposed on a display unit, a translucent plate having a predetermined light transmittance disposed on a front side of the light receiving surface, and A supporting member for supporting the solar cell, wherein the solar cell receiving member has a catching end protruding toward the front side of the translucent plate and having a hooked end protruding above the front surface of the translucent plate. A display part structure with a solar cell, wherein a hook part is provided. 2. The light-transmitting plate according to claim 1, wherein the light-transmitting plate is pressed against the solar cell from the front side, so that the light-transmitting plate holding hook portion is deformed, and the hooking end becomes the light-transmitting plate. A display unit structure with a solar cell, which is configured to engage with a plate. 3. The solar cell receiving member according to claim 1, wherein the solar cell receiving member protrudes forward from a portion without the solar cell,
A solar cell display unit structure, comprising: a solar cell holding hook having a hooked end protruding above a front surface of the solar cell. 4. The display unit with a solar cell according to claim 3, wherein the solar cell holding hook is provided with a support for supporting the translucent plate. 5. The light-transmitting plate according to claim 1, wherein the light-transmitting plate and the solar cell are formed so as to have a mutually non-planar shape, and at least a rear surface of the light-transmitting plate is provided with the solar cell. A display with a solar cell, wherein a non-existent region is provided, and the solar cell receiving member is provided with a support protrusion for projecting to the front side in the region and supporting the translucent plate. Part structure. 6. An electronic device with a solar cell, comprising the display unit structure with a solar cell according to any one of claims 1 to 5. 7. A solar cell-equipped timepiece provided with the solar cell-equipped display part structure according to any one of claims 1 to 5.