JP6474326B2 - Electronic clock with solar battery - Google Patents

Description

  The present invention relates to an electronic timepiece with a solar cell that uses a solar cell for driving a timepiece.

  Since an electronic timepiece with a solar cell converts light energy into electric energy by using a built-in solar cell and uses it for driving the timepiece, it is possible to drive the timepiece while generating power as long as there is light energy. For this reason, the electronic timepiece with solar battery does not require replacement of the built-in battery, and a used waste battery is not generated.

  In recent years, as disclosed in Patent Document 1, an electronic timepiece with a solar cell having a ring-shaped solar cell therein has been proposed. In the solar cell used for this, a power generation layer is formed on a flexible printed board, which is cut into a strip shape, rounded and deformed into a ring shape. And this solar cell is arranged upright facing the outer peripheral surface of the turn ring that transmits light.

  The electronic timepiece with solar cell as in Patent Document 1 does not require the use of a dial that transmits light unlike an electronic timepiece with a solar cell in which a solar cell is arranged on the back of the dial. Not constrained.

  Further, Patent Document 1 describes that a solar battery is prevented from being visually recognized through the counter ring by forming a metal thin film or an optical interference film on the inner peripheral surface or the outer peripheral surface of the counter ring. Yes.

JP 2001-305249 A (paragraphs 0025 and 0033, FIG. 3B)

  However, the electronic timepiece with solar cell described in Patent Document 1 can generate power to the extent that the metal thin film or optical interference film formed on the dial ring can be driven by the solar cell facing the outer peripheral surface of the dial ring. It is necessary to form such a thickness that the transmittance is maintained and an external appearance that hinders the visual recognition of the solar cell is obtained. For this reason, it is very difficult to control the film thickness of the metal thin film or the optical interference film, and the appearance of the dial ring varies. In addition, except for the inner peripheral surface of the counter ring, there is a problem in that workability when forming a thin film is poor because a mask process is necessary for a portion where a film is not formed.

  The present invention has been made in view of such circumstances, and can use a dial whose design is not constrained, has little variation in the decoration effect imparted to the dial ring, and easily imparts the decorative effect to the dial ring. An object of the present invention is to provide an electronic timepiece with a solar cell.

An electronic timepiece with a solar cell according to the present invention includes a dial, a light-transmitting dial ring disposed along an outer edge of the dial, a power generation region facing an outer peripheral surface of the dial ring, and the dial ring A solar cell-equipped electronic timepiece having a solar cell disposed so as to surround the transparent ring, wherein a transparent reflector is disposed between an outer peripheral surface of the dial ring and the solar cell, and the transparent reflector is a dial ring And a plurality of protrusions, and the plurality of protrusions are provided in the vicinity of both ends in the length direction of the band, and the plurality of protrusions are arranged on the counter ring side or the A solar cell with a solar cell formed so as to be foldable on the opposite side and formed with a holding portion standing outside the solar cell in order to hold the solar cell facing the outer peripheral surface of the ring. Has a holding member and is transparent In a state in which arranged between the outer peripheral surface and the solar cell of the reflection plate dial ring, the locking portion for locking the protrusion which is bent, characterized in that provided in the dial ring or the solar battery holding member .

  Moreover, the electronic timepiece with a solar cell according to the present invention is characterized in that the plurality of protrusions are provided on the transmissive reflecting plate so as to protrude from the belt-like portion to the side opposite to the dial.

  Further, in the electronic timepiece with solar cell according to the present invention, in the state where the plurality of protrusions are locked to the locking portion, one end portion in the length direction of the transmissive reflecting plate has the transmissive reflection. The protruding portion and the locking portion are provided on the transmissive reflecting plate and the turn-around ring or the solar cell holding member, respectively, at positions overlapping with the strip-shaped portion of the plate.

  Moreover, the electronic timepiece with a solar cell according to the present invention is characterized in that the protruding portion is bent toward the solar cell holding member and the locking portion is provided on the solar cell holding member.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the electronic timepiece with a solar cell which has few dispersion | variation in the decoration effect provided to a dial ring, and can easily provide a decoration effect to a dial ring.

It is a figure of the electronic timepiece with a solar cell concerning the embodiment of the present invention, (a) is a top view and (b) is a VV line sectional view. It is a figure of the electronic timepiece with a solar cell which concerns on embodiment shown in FIG. 1, and is sectional drawing which expanded and showed the transparent reflector vicinity. It is a figure of the transparent reflector used for the electronic timepiece with a solar cell shown in FIG. 2, (a) is a top view, (b) is the top view which expanded and showed the edge part. It is a figure which shows the ring-shaped solar cell used for the electronic timepiece with a solar cell shown in FIG. 2, (a) is a perspective view, (b) is the top view which expanded the principal part. It is the figure which showed the path | route of the light in the electronic timepiece with a solar cell which concerns on embodiment shown in FIG. It is a top perspective view of the dial ring in the electronic timepiece with a solar cell according to the embodiment shown in FIG. It is a figure explaining the arrangement | positioning method of the transparent reflector in the electronic timepiece with a solar cell which concerns on the actual form shown in FIG. 2, (a) is the state before arrange | positioning a transparent reflector on the outer peripheral surface of a dial ring FIGS. 4B to 4D are views showing states from the start to the end of the work of winding the transmissive reflector plate around the ring. It is a figure which concerns on the 1st modification of the electronic timepiece with a solar cell in this invention, (a) is a top view of a transmissive reflecting plate, (b) is a figure which showed the convex part vicinity of a dial ring, (c). FIG. 4 is a view showing the vicinity of a convex portion of a dial ring in a state where a transmissive reflecting plate is arranged. It is a figure which concerns on the 2nd modification of the electronic timepiece with a solar cell in this invention, (a) is a top view of a transmissive reflector, (b) is a side view of a transmissive reflector, (c) is The figure which showed the level | step-difference part vicinity of a solar cell holding member, (d) is the figure which showed the level | step-difference part vicinity of the solar cell holding member in the state which has arrange | positioned the transmissive reflector, (e) is a transmissive reflector It is sectional drawing of the electronic timepiece with a solar cell which expanded and showed the transparent reflector vicinity of the state which has arrange | positioned. It is a figure which concerns on the 3rd modification of the electronic timepiece with a solar cell in this invention, (a) is a top view of a transmissive reflector, (b) is a top view of a transmissive reflector, (c), It is a figure of the state arrange | positioned at the outer periphery of the turn-around ring in the translucent reflector. It is a figure which concerns on the 4th modification of the electronic timepiece with a solar cell in this invention, (a) is a top view of a transmissive reflecting plate, (b) is the state which engaged the both ends of the transmissive reflecting plate The top view expanded by (c) is the top view expanded in the state which the both ends of a transmissive reflecting plate do not engage. It is a figure which concerns on the 5th modification of the electronic timepiece with a solar cell in this invention, (a) is the perspective view expanded in the state which the both ends of a transparent reflector do not engage, (b) is transparent. It is the perspective view expanded in the state which engaged the both ends of the reflecting plate.

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

  Fig.1 (a) is a top view which shows embodiment of the electronic timepiece with a solar cell concerning this invention, (b) is the VV sectional view taken on the line.

  20 is an electronic timepiece with a solar cell, 1 is a windshield, 2 is a ring-shaped solar cell with the light incident side facing the center of the clock, 3 is a translucent dial ring, 4 is a pointer for displaying the time, A dial, 6 is a movement for driving the pointer 4, 7 is a watch case, 8 is a transmissive reflector, and 9 is a solar cell holding member.

  FIG. 2 is a cross-sectional view of an electronic timepiece 20 with a solar cell in which the vicinity of the dial ring 3, the transmissive reflector 8, and the ring-shaped solar cell 2 of the present embodiment is enlarged. The solar cell holding member 9 is a part of the middle frame that holds the movement 6, and the facing ring 3 is disposed along the outer edge portion of the dial 5, and the facing ring 3 is arranged outside the facing ring 3. A transmissive reflector 8 is arranged in a ring shape along the outer peripheral surface. Furthermore, the ring-shaped solar cell 2 is disposed along the outer peripheral surface of the transmissive reflector 8 outside the transmissive reflector 8. The solar cell holding member 9 may be a member separate from the middle frame and holding only the ring-shaped solar cell 2.

  With the configuration shown in FIGS. 1 and 2, the electronic timepiece with solar cell 20 uses the power generated by the ring-shaped solar cell 2 by the ring-shaped solar cell 2 receiving light incident through the windshield glass 1 and the dial ring 3. The movement 6 can be driven to operate as a watch.

The material of the turning ring 3 is required to be workability and translucency, and therefore, it is preferable to use, for example, an acrylic resin or a polycarbonate resin as a transparent resin having excellent workability. The facing ring 3 is formed in a ring shape and transparent by injection molding with these resins. However, the material of the facing ring 3 gives priority to the design and decorativeness over the workability, and a transparent material other than resin such as glass can also be applied.

  Further, the inner surface of the turn ring 3 is configured by a slope inclined toward the windshield glass 1 so that light incident through the windshield 1 can be more easily taken. However, as long as the ring-shaped solar cell 2 can generate power enough to drive the movement 6, the inner surface of the dial ring 3 may have another shape.

  In addition, as shown in FIG. 1A, the solar cell-equipped electronic timepiece 20 is not limited to a substantially circular shape in plan view, but is used when a square or barrel shape is used. Accordingly, the facing ring 3 can also be applied in a square or barrel shape.

  FIGS. 3A and 3B are views of the transmissive reflector 8 used in the electronic timepiece with solar cell according to the present embodiment, where FIG. 3A is a plan view and FIG. 3B is a plan view showing an enlarged end portion. .

  As shown in FIG. 3A, the transmissive reflecting plate 8 has an elongated strip shape having flexibility, and is bent so as to surround the dial ring 3 between the dial ring 3 and the ring-shaped solar cell 2. It is arranged.

  The transmissive reflecting plate 8 has both optical properties of light transmission and reflection, and the appearance looks like a mirror surface by the reflected light. As the transmissive reflector 8, for example, a thin layer of polyethylene terephthalate (PET) resin or the like is laminated to form a film that causes interference reflection at the boundary between the thin layers, and the light transmittance is 80%. In addition, a thickness of 150 μm to 100 μm can be used. In order to obtain a strip-shaped transmissive reflecting plate 8 as shown in FIG. 3A, the sheet-like large transmissive reflecting plate is cut or punched into a required width and length.

  The transmissive reflecting plate 8 has a band-shaped portion 8a and a plurality of protrusions 10 protruding from the band-shaped portion 8a to the opposite side of the dial plate 5, and the plurality of protrusions 10 are in the length direction of the band-shaped portion 8a. It is provided in the vicinity of both ends. When the transmissive reflecting plate 8 is disposed so as to surround the turn ring 3, the protrusion 10 is bent 90 degrees to the turn ring 3 side or the opposite side. Further, the protrusion 10 may be formed in a state of being bent 90 degrees in advance on the side of the counter ring 3 or on the opposite side by bending.

  As shown in FIG. 3 (b), the protrusion 10 is formed in a substantially T shape, and has a vertical line portion 10a and a horizontal line portion 10b constituting the substantially T shape.

  In the state where the transmissive reflecting plate 8 is disposed between the outer peripheral surface of the dial ring 3 and the ring-shaped solar cell 2, as described later, the protrusion 10 bent 90 degrees of the transmissive reflecting plate 8 is formed. The ring ring 3 or the solar cell holding member 9 is engaged.

  4A and 4B are diagrams showing a ring-shaped solar cell 2 used in the electronic timepiece with solar cell according to the present embodiment, in which FIG. 4A is a perspective view and FIG. 4B is an enlarged plan view of a main part.

  The ring-shaped solar cell 2 used here is formed by forming a solar cell on a strip-shaped substrate, making it into a strip shape, and rounding it into a ring shape. As shown in FIG. 4 (b), the ring-shaped solar cell 2 has a power generation region 142 formed on a thin strip-shaped substrate 141, and the ring-shaped solar cell 2 is shown in FIG. 4 (a). Thus, it is arranged so as to surround the outer peripheral surface of the turn ring 3 in a state of being rounded in an annular shape and the power generation region 142 faces the turn ring 3 side.

  In addition, the terminal 143 for electrically connecting with the movement 6 is connected to the ring solar cell 2 in the vicinity of one end of the belt-like shape. Further, in the ring-shaped solar cell 2, the non-power generation region 144 at one end overlaps the power generation region 142 near the other end in the rolled state shown in FIG. Therefore, the power generation region 142 does not face the entire circumference of the ring-shaped solar cell 2 in the circumferential direction R, but the power generation region 142 at the other end is interrupted at a portion where both ends overlap. Yes.

  FIG. 5 is a view showing an incident path of light to the ring solar cell 2 in the electronic timepiece with solar cell according to the present embodiment.

  There are three paths A to C illustrated in FIG. 5 through which light enters the ring-shaped solar cell 2. In the path A, light that has passed through the windshield glass 1 is directly incident on the turn ring 3, passes through the transmissive reflector 8, and reaches the ring-shaped solar cell 2. In the path B, the light reflected by the surface of the dial plate 5 after passing through the windshield glass 1 enters the dial ring 3, passes through the transmissive reflector plate 8, and reaches the ring-shaped solar cell 2. In the path C, light that has passed through the windshield 1 and repeatedly reflected between the surface of the dial plate 5 and the windshield 1 enters the turn ring 3 and passes through the transmissive reflector 8 to form a ring solar cell. Reach 2.

  Light can be guided to the ring-shaped solar cell 2 by the paths A to C, and the paths of B and C reflected by the surface of the dial 5 are also guided to the ring-shaped solar cell 2, so that power generation efficiency can be improved. . If the color of the dial plate 5 is bright, the amount of light reflected on the surface of the dial plate 5 in the paths B and C increases, and the power generation efficiency of the ring-shaped solar cell 2 can be further increased.

  Further, since the transmissive reflector 8 has an optical characteristic of reflecting light, it becomes a mirror surface and prevents the ring-shaped solar cell 2 from being visually recognized. Furthermore, the light reflected from the surface of the dial plate 5 such as the paths B and C and reflecting the color of the dial plate 5 is incident on the mirror surface, so that the color of the dial plate 5 is reflected on the transparent reflecting plate 8. Therefore, the turn ring 3 is visually recognized in the same color as the dial 5 and the appearance is improved.

  Therefore, by using a dial 5 having a color different from that of the ring-shaped solar cell 2, it is possible to obtain the same decorative effect as when the dial ring 3 is colored in the color of the dial 5.

  In particular, when the dial plate 5 having a brighter color than the ring-shaped solar cell 2 is used, the dial ring 3 can be decorated in a bright color and the power generation efficiency of the ring-shaped solar cell 2 can be improved. Thus, with the configuration of the present embodiment, both the power generation efficiency of the ring-shaped solar cell 2 and the appearance of the turning ring 3 can be improved.

  6 is a top perspective view of a dial ring in the electronic timepiece with solar cell according to the embodiment shown in FIG.

  The facing ring 3 has an upper surface flat portion 3a at the upper end portion on the windshield glass 1 side. Further, the upper surface flat portion 3a has 3 as an engaging portion for engaging the protrusion 10 of the transmissive reflector 8. Two convex portions 11 are provided. As will be described later, the convex portion 11 is a means for locking the protruding portion 10 of the transmissive reflecting plate 8 to fix the transmissive reflecting plate 8, and if the protruding portion 10 can be locked, The thing of shapes other than a cylinder is applicable.

FIG. 7 is a view for explaining a method of disposing the transmissive reflector 8 on the outer peripheral surface of the dial ring 3. FIG. 7A shows a state before the transmissive reflector 8 is arranged on the outer peripheral surface of the dial ring 3. (B) to (d) are diagrams showing states from the start to the end of the work of winding the transmissive reflector plate 8 around the ring 3.

  In disposing the transmissive reflecting plate 8 on the outer periphery of the facing ring 3, it is necessary to incorporate the transmissive reflecting plate 8 while curving it in a ring shape along the outer peripheral surface of the facing ring 3. When the transmissive reflecting plate 8 that extends straight is curved into such a shape, the transmissive reflecting plate 8 itself returns to the original straight state due to the rigidity of the transmissive reflecting plate 8 itself. It will be in a state where the force that spreads as strongly works. Therefore, when the surface of the transmissive reflector 8 is gripped with a jig such as tweezers, the surface of the transmissive reflector 8 is scratched or creased. Furthermore, when the assembling work is performed by directly holding the transmissive reflecting plate 8 by hand, dirt or the like adheres to the surface of the transmissive reflecting plate 8 and is visually recognized through the turn ring 3.

  As described above, it may not be easy to grip the band-like portion 8a of the transmissive reflecting plate 8 with a jig or to carry it by hand. Therefore, in the present embodiment, as shown in FIG. 3, a projecting portion 10 is provided on the transmissive reflecting plate 8, and as described below, the assembling work of the transmissive reflecting plate 8 with the projecting portion 10 is performed. In addition, a convex portion 11 for locking the transmissive reflecting plate 8 is provided on the counter ring 3 so that the protruding portion 10 also functions as an engaging portion for the counter ring 3.

  As shown in FIG. 7A, the three protrusions 11 provided on the flat upper surface 3a of the dial ring 3 are such that the protrusions 10 provided at both ends in the longitudinal direction of the transmissive reflector 8 can be locked. Are spaced apart from each other. Specifically, the interval between the protrusions 11 can be inserted into a substantially T-shaped vertical line portion 10 a in the protrusion 10, and is narrower than the substantially T-shaped horizontal line portion 10 b in the protrusion 10. Is set.

  When the transparent reflector 8 is disposed so as to surround the outer peripheral surface of the ring 3, as shown in FIG. 7B, first, the substantially T-shaped protrusion 10 provided on the transparent reflector 8 is formed. One side is bent 90 degrees toward the counter ring 3 side, and is engaged and locked between the two convex portions 11 provided on the upper surface flat portion 3 a of the counter ring 3. In addition, the convex part 11 which engages the projection part 10 at this time is the two convex parts 11 provided in the upper part and center part in FIG.7 (b).

  Next, as shown in FIG. 7C, the outer periphery of the turn-around ring 3 is surrounded by the transmissive reflector 3 so as to surround the outer periphery of the turn-off ring 3 while grasping the other protrusion 10 of the transmissive reflector 8. At this time, since one protrusion 10 is locked, there is an advantage that it is easy to wind and work easily.

  Then, as shown in FIG. 7 (d), the other protrusion 10 is bent 90 degrees toward the counter ring 3 side and engaged with the convex portions 11 provided on the upper flat portion 3 a of the counter ring 3. By stopping, the transmissive reflecting plate 8 can be fixed. In addition, the convex part 11 which engages the projection part 10 at this time is two convex parts provided in the center part and the lower part in FIG.7 (d).

  As described above, in order to perform the assembling work of the transmissive reflector 8 by grasping the protrusion 10 provided on the transmissive reflector 8 so as to protrude from the band-like portion 8 a disposed facing the outer peripheral surface of the dial ring 3. In addition, the portion of the transmissive reflector 8 that faces the outer peripheral surface of the dial ring 3 is not soiled, and even if the protrusion 10 is scratched or creased, it can be visually recognized on the completed electronic timepiece 20 with a solar cell. Absent. Therefore, with the configuration shown in the present embodiment, the assembling work can be facilitated without damaging or soiling the visible portion of the transmissive reflector 8.

  Further, it is preferable that both end portions of the transmissive reflecting plate 8 are set to such a length that they slightly overlap when the transmissive reflecting plate 8 is arranged on the outer periphery of the ring 3.

  Specifically, in a state where the protrusion 10 is locked to the convex portion 11 of the facing ring 3, the distance between the two protrusions 10 shown in FIG. 7D is L, and the transmission shown in FIG. The protruding length at which the other end protrudes from the protruding portion 10 provided on one end side of the transparent reflector 8 is La, and the protruding length 10 provided on the other end side of the transmissive reflecting plate 8 When the protruding length at which the end protrudes is Lb, the relationship between these lengths is set so that La + Lb> L.

  As a result, when the transmissive reflector 8 is arranged on the outer periphery of the ring 3, both ends of the transmissive reflector 8 always overlap. In this state, one end of the transmissive reflecting plate 8 overlaps the inner surface of the band-shaped portion 8 a of the transmissive reflecting plate 8, and the other end of the transmissive reflecting plate 8 is in the transmissive reflecting plate 8. It overlaps with the outer surface of the band-shaped portion 8a.

  If both end portions of the transmissive reflecting plate 8 are opposed to each other, a delicate gap generated in the facing portion or two ends are emphasized at the same position, so that both ends of the transmissive reflecting plate 8 are emphasized. Since the portion becomes a boundary line and is visually recognized through the turn ring 3, it is not preferable in terms of appearance.

  On the other hand, when both end portions of the transmissive reflecting plate 8 overlap, one end portion is hidden behind the band-shaped portion 8a, and only the other end portion is visible, and a delicate gap is formed between both end portions. It does not occur or the end portion is emphasized, and the end portion of the transmissive reflector 8 is not noticeable.

  It is preferable that the positions where the both end portions of the transmissive reflecting plate 8 are overlapped are set so as to be from 3 o'clock to 9 o'clock on the 6 o'clock side. In this range, when the wristwatch is worn on the wrist, in a posture in which the time is usually visually recognized, a blind spot is formed by a bezel or the like, and the visibility of the portion where both ends of the transmissive reflector 8 are overlapped is hindered.

  In particular, by incorporating the position where the both end portions of the transmissive reflecting plate 8 are overlapped at the 6 o'clock position, it is usually most difficult to be visually recognized in a posture where the time is visually confirmed.

  Accordingly, the convex portion 11 of the facing ring 3 is preferably provided at the 3 o'clock position to the 9 o'clock position, and most preferably at the 6 o'clock position.

  Further, one end or both ends of the transmissive reflecting plate 8 disposed at a position that can be visually recognized through the turn ring 3 can be visually recognized even if the position is matched with the position of a mounted object such as a typesetting provided on the dial 5. Can be made difficult.

  This is because the mounted object of the dial plate 5 is reflected on the light-transmitting reflecting plate 8 acting as a mirror through the turn-back ring 3, and this is visually recognized by overlapping with the end portion or both end portions of the transmitting reflecting plate 8. This is because the end portion or both end portions of the transmissive reflecting plate 8 are not visible.

  Thus, according to the present embodiment, the decorative effect can be easily imparted to the dial ring 3 with a simple structure in which the light transmissive reflector 8 is disposed on the outer periphery of the dial ring 8. In addition, it is necessary to use a transmissive reflector having little variation in transmittance and color, such as the transmissive reflector 8 cut and punched to a required width and length from a large sheet-like transmissive reflector. It is possible to reduce variations in the appearance of the dial ring 3.

  FIGS. 8A and 8B are diagrams showing a first modification of the electronic timepiece with a solar cell according to the present invention, where FIG. 8A is a plan view of the transmissive reflecting plate 8 and FIG. The figure shown, (c) is the figure which showed the convex part 11 vicinity of the dial ring 3 in the state which has arrange | positioned the transparent reflector 8. FIG.

  In the first modification, the transmissive reflecting plate 8 disposed on the outer periphery of the dial ring 3 is fixed in a form different from the previous embodiment.

  This modified example is different from the embodiment shown in FIGS. 1 to 7 only in the configuration of the protruding portion 10 of the transmissive reflector 8 and the convex portion 11 of the turn ring 3, and other configurations are the same. Therefore, explanation is omitted.

  In this modification, as shown in FIG. 8B, the upper surface flat portion 3a of the dial ring 3 is provided with only one convex portion 11 as a locking portion at one place. The shape of the convex portion 11 is round, but may be rectangular. As shown in FIG. 8A, the protrusion 10 formed in the vicinity of both ends of the transmissive reflector 8 has a rectangular outer shape, and has a round hole at the center thereof.

  When the transmissive reflecting plate 8 is arranged on the outer periphery of the turn-back ring 3, the first protrusion 10 provided in the transmissive reflection plate 8 is first opened to the convex portion 11 provided on the upper flat portion 3 a of the turn-off ring 3. The protrusion 10 is locked by engaging.

  Then, while holding the other protrusion 10 of the transmissive reflector 8, the transmissive reflector 8 is wound so as to surround the outer peripheral surface of the dial ring 3. At this time, the one protrusion 10 is locked. Therefore, there is an advantage that the work of winding the transmissive reflector 8 is easy. Then, the other protrusion 10 is locked by engaging the hole of the one protrusion 10 with the round-shaped protrusion 11 that is first locked to the facing ring 3. This state is shown in FIG.

  Thereby, both the projection parts 10 of the transmissive | pervious reflective plate 8 can be latched only by the one convex part 11, and the transmissive reflective plate 8 can be fixed, and the shape of the dial ring 3 can be simplified. In addition, with this configuration, both end portions of the transmissive reflecting plate 8 do not face each other and are always overlapped, so that the end portions of the transmissive reflecting plate 8 are hardly visible and the appearance is improved.

  FIG. 9 is a view showing a second modification of the electronic timepiece with solar cell in the present invention, where (a) is a plan view of the transmissive reflector 8 and (b) is a side view of the transmissive reflector 8. FIG. 4C is a view showing the vicinity of the stepped portion 9a of the solar cell holding member 9, and FIG. 4D is a view showing the vicinity of the stepped portion 9a of the solar cell holding member 9 with the transmissive reflector 8 being disposed. FIG. 4E is a cross-sectional view of an electronic timepiece with a solar cell, in which the vicinity of the transmissive reflector 8 is enlarged in a state where the transmissive reflector 8 is disposed.

  In the second modification, the transmissive reflecting plate 8 disposed on the outer periphery of the dial ring 3 is fixed in a form different from the previous embodiment and the first modification.

  This modified example is different from the embodiment shown in FIGS. 1 to 7 only in the configuration in which the transmissive reflector 8 is fixed to the solar cell holding member 9, and the other configurations are the same, and the description thereof is omitted. To do.

  As shown in FIGS. 9 (c) and 9 (e), in this modification, a step portion 9 a is provided on a part of the upper surface of the solar cell holding member 9, and the outer peripheral portion of the solar cell holding member 9 is further provided. A recess 9b is provided. The stepped portion 9a is formed in a concave shape lower than the thickness of the transmissive reflector 8 with respect to the upper surface of the solar cell holding member 9, and the recessed portion 9b is connected to the stepped portion 9a.

  As shown in FIGS. 9 (a) and 9 (b), the protrusions 10 provided in the vicinity of both ends of the transmissive reflector 8 formed in a band shape are stepped portions 9a and recessed portions 9b of the solar cell holding member 9. It is formed in the shape of a key that can be hooked to the top.

Specifically, the protrusion 10 is bent at two locations, one is bent 90 degrees toward the solar cell holding member 9 at a position close to the band-shaped portion 8a of the transmissive reflector 8, and the other is Further, the dial is bent 90 degrees toward the dial plate 5 at a position away from the band-shaped portion 8a of the transmissive reflector plate 8. Thereby, the projection part 10 is formed in the substantially L shape which has the horizontal part 10j arrange | positioned at the level | step-difference part 9a, and the vertical part 10k arrange | positioned at the recessed part 9b. When the transmissive reflector 8 is disposed along the inner peripheral portion of the solar cell holding member 9, the protrusion 10 is hooked on the stepped portion 9 a and the concave portion 9 b of the solar cell holding member 9.

When the transmissive reflector 8 is disposed along the inner peripheral portion of the solar cell holding member 9, one of the protrusions 10 provided on the transmissive reflector 8 at first is connected to the step portion 9 a of the solar cell holding member 9. It hooks and is fixed to the recess 9b.
And while holding the other projection part 10 of the transmissive reflecting plate 8, it winds along the inner peripheral part of the solar cell holding member 9, since one projection part 10 is locked at this time. When the solar cell holding member 9 is disposed along the inner peripheral portion, the transmissive reflector 8 does not move in the rotation direction, and there is an advantage that the operation is easy to do.

  Finally, the other protrusion 10 is engaged and locked at the same place as the stepped portion 9a and the recessed portion 9c that are locked first. FIG. 9D shows a state where the transmissive reflector 8 is disposed on the inner peripheral portion of the solar cell holding member 9.

  In this way, by locking the two protruding portions 10 to the same stepped portion 9a and the recessed portion 9b, the shape of the solar cell holding member 9 can be simplified, and both end surfaces of the transmissive reflecting plate 8 are overlapped. Thus, the boundary line generated at the end of the transmissive reflecting plate 8 can be made inconspicuous as in the above.

  In this modification, even if there is no vertical portion 10k of the protruding portion 10 of the transmissive reflecting plate 8 and the concave portion 9b of the solar cell holding member 9, only the horizontal portion 10j and the stepped portion 9a of the protruding portion 10 are transmissive. As long as the protruding portion 10 of the reflecting plate 8 can be locked, the vertical portion 10k and the recessed portion 9b may be omitted. In the present modification, the stepped portion 9 a or the stepped portion 9 a and the recessed portion 9 b is a locking portion that locks the protruding portion 10.

  In addition, the direction which bent the protrusion part 10 of the transmissive reflecting plate 8 to the solar cell holding member 9 side compared the case where it bent to the dial ring 3 side, the transmissive reflecting plate 8 is in the electronic timepiece 20 with a solar cell. There is an advantage that the work to be incorporated into the is easy. This is because when the protrusion 10 of the transmissive reflector 8 is bent toward the solar cell holding member 9, the protrusion 10 faces outward, so that the hand holding the protrusion 10 is placed on the transmissive reflector 8. This is because the work of assembling the transmissive reflecting plate 8 so as to draw a larger circle than the circular arrangement portion can be performed. On the other hand, when the protrusion 10 of the transmissive reflector 8 is turned back and bent to the ring 3 side, the hand holding the protrusion 10 is more than the circular arrangement where the transmissive reflector 8 is arranged. The transmissive reflecting plate 8 is assembled so as to draw a small circle.

  FIG. 10 is a diagram showing a third modification of the electronic timepiece with solar cell according to the present invention, where (a) is a plan view of the transmissive reflector 12, and (b) is a top view of the transmissive reflector 12, (C) is a diagram showing a state in which the transmissive reflecting plate 12 is arranged on the outer periphery of the turning ring 3.

  This modified example is different from the embodiment shown in FIGS. 1 to 7 only in the configuration of the transmissive reflector 12, and the configuration other than this is the same, and the description thereof is omitted.

  The transmissive reflecting plate 12 of this modified example is not formed by laminating thin layers of PET resin or the like in multiple layers in order to give an optical property of reflecting light, but as shown in FIG. Is formed.

The transmissive reflector 12 is made of acrylic resin, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. Each of the prisms 13 of the transmissive reflecting plate 12 has a triangular prism shape. The bottom surface of the triangular prism is parallel to the surface direction of the transmissive reflector 12, the ridge line of the triangular prism coincides with the width direction H of the transmissive reflector 12, and the adjacent triangular prisms are not separated from each other. Are arranged side by side in the longitudinal direction. The pitch of the prisms 13 is 50 μm to 150 μm, and the angles of the peaks and valleys formed by the two side surfaces of the prism 13 are both 90 degrees. Except for the surface on which the prism 13 of the transmissive reflector 12 is formed facing the ring solar cell 2, the arrangement of the transmissive reflector 12 in the solar cell-equipped electronic timepiece 20 is the same as that of the above-described embodiment. This is the same as the transmissive reflector 8.

  The light that has passed through the turn ring 3 and entered the transmissive reflector 12 is converted into light that travels to the ring-shaped solar cell 2 by the prism 13 formed on the transmissive reflector 12 and light that is reflected to the turn ring 3 side. To be separated. When the angle formed by the side surface of the prism 13 is smaller than 90 degrees, a part of the light reflected to the turn ring 3 side is visually recognized as being diffused by the prism 13 and becoming clouded. As described above, even when the transmissive reflector 12 having the prism 13 is used, a transmittance capable of generating power is obtained to such an extent that the timepiece can be driven, and the color of the dial 5 is transmitted by the light reflected by the prism 13. The ring-shaped solar cell 2 is not visually recognized by the reflective reflector 12, and the appearance can be improved.

  The prism 13 can be formed so that the ridge line of the triangular prism faces the length direction of the transmissive reflector 12 or can be incorporated into the electronic timepiece with solar cell 20 by turning the prism 13 toward the ring 3 side. It is.

  However, when the prism 13 is formed such that the ridge line of the triangular prism is directed in the length direction of the transmissive reflecting plate 12, stress that causes deformation or cracks in the prism 13 is likely to act. This is because the peaks of the peaks protruding from the bottom surface of the prism 13 are formed continuously along the length direction of the transmissive reflector 12 and from the bottom surface of the prism 13 by a dimension corresponding to the height of the peaks. In the state where the transmissive reflector 12 is bent in a ring shape, the peak of the peak of the prism 13 is pulled in the length direction of the transmissive reflector 12. Because it is.

  On the other hand, when the prism 13 is formed in the direction shown in FIG. 10, the thickness of the valley portion between the prisms 13 is thin and easily deformed, so that stress that deforms the prism 13 or causes cracks is less likely to occur.

  11A and 11B are views showing a fourth modification of the electronic timepiece with solar cell according to the present invention, in which FIG. 11A is a plan view of the transmissive reflector 8 and FIG. 11B is both ends of the transmissive reflector 8. The top view expanded in the state which engaged the part, (c) is the top view expanded in the state which the both ends of the transmissive reflecting plate 8 do not engage.

  This modified example is different from the embodiment shown in FIGS. 1 to 7 in that the projection 10 of the transmissive reflector 8 is not looked back to the ring 3 or the solar cell holding member 9 and is formed in a ring shape in advance. The reflective reflector 8 is arranged in the solar cell-equipped electronic timepiece 20 and the shape of the projecting portion 10, and the other configurations are the same, so the description thereof is omitted.

  The protrusions 10c and 10d formed on the transmissive reflector 8 of this modification are configured so that the transmissive reflector 8 can be fixed in a ring shape by locking the protrusion 10c to the protrusion 10d. .

As shown in FIG. 11C, the protruding portion 10c has an intermediate portion 10c1, a narrow portion 10c2, and a wide portion 10c3. The intermediate part 10c1 is formed at one end of the band-like part 8a of the transmissive reflector 8 so as to protrude in the width direction of the band-like part 8a, and the narrow-width part 10c2 is defined as the intermediate part 10c.
1 is formed so as to protrude from the intermediate part 10c1 in the length direction of the band-like part 8a from the vicinity of the other end part of the band-like part 8a toward the one end part, and the wide part 10c3 has a width of the narrow part 10c2. It is wider and formed at the end of the narrow portion 10c2.

  The protruding portion 10d is formed at the other end of the band-like portion 8a of the transmissive reflector 8 so as to protrude in the same direction as the intermediate portion 10c1, and a cut portion 10d1 is formed in the protruding direction. The cut length of the cut portion 10d1 is set to be longer than the width of the narrow width portion 10c2 and shorter than the width of the wide width portion 10c3.

  The protrusions 10c and 10d are bent 90 degrees toward the facing ring 3 side or the solar cell holding member 9 side.

  FIG. 11B shows a state in which the wide portion 10c3 of the protrusion 10c is inserted through the cut portion 10d1 and the narrow portion 10c2 is located in the cut portion 10d1. In this state, the wide reflecting portion 10c3 is hooked on both ends of the cut portion 10d1, and the protruding portion 10c is engaged with the protruding portion 10d, so that the transmissive reflector 8 is held in a ring shape as shown in FIG. I'm leaning. The ring-shaped transmissive reflecting plate 8 shown in FIG. 11A can be easily disposed in the electronic timepiece 20 with a solar cell. FIG. 11A shows an example in which the protrusions 10c and 10d are bent 90 degrees toward the facing ring 3 side, but they may be bent 90 degrees toward the solar cell holding member 9 side.

  FIG. 12 is a view showing a fifth modified example of the electronic timepiece with solar cell according to the present invention, in which (a) is an enlarged perspective view in a state in which both end portions of the transmissive reflecting plate 8 are not engaged; ) Is an enlarged perspective view in a state in which both end portions of the transmissive reflecting plate 8 are engaged.

  This modified example is different from the fourth modified example shown in FIG. 11 in the shape of the protrusion 10 of the transmissive reflecting plate 8, and the rest of the configuration is the same.

  The protrusions 10c and 10d formed on the transmissive reflector 8 of the present modification project in the same direction in the width direction of the strip 8a in the vicinity of the respective end portions of the strip 8a of the transmissive reflector 8. Thus, it is formed in an L shape.

  The protrusions 10c and 10d have first protrusions 10c11 and 10d11 and second protrusions 10c12 and 10d12, respectively.

  As shown in FIG. 12A, the first protrusions 10c11 and 10d11 are formed in an elongated shape that faces from the long side portion of the strip portion 8a to the width direction of the strip portion 8a. As shown in FIG. 12A, the second projecting portions 10c12 and 10d12 are formed in an elongated shape that faces the center side of the strip-shaped portion 8a from the end portions of the first projecting portions 10c11 and 10d11.

  As shown in FIG. 12 (b), the protrusions 10c and 10d can be hooked and engaged with each other, and in this state, the transmissive reflector 8 is kept in a ring shape, and the transmissive reflector 8 Can be easily arranged in the electronic timepiece 20 with solar battery.

12A and 12B show an example in which the protrusions 10c and 10d are turned 90 degrees toward the ring 3 side, but these may be bent 90 degrees toward the solar cell holding member 9 side.
In addition, as long as the transmissive reflecting plate 8 can be held in a ring shape, both ends of the transmissive reflecting plate 8 may be engaged by means other than the fourth and fifth modified examples. The transmissive reflector 8 is formed in a ring shape and then incorporated into the electronic timepiece 20 with a solar cell, so that the transmissive reflector 8 can be easily assembled.

  In addition, in this embodiment and each modification, although the projection part 10 is provided in the transmissive reflecting plate 8, the transmissive reflecting plate 8 can be integrated in the electronic timepiece 20 with a solar cell even if the projection part 10 is not provided. Is possible. For example, in a state in which the transmissive reflector 8 is incorporated in the electronic timepiece 20 with a solar cell, the windshield 1 side of the transmissive reflector 8 is not visually recognized by being blocked by the watch case 7 positioned thereon. The transparent reflector 8 can be incorporated into the electronic timepiece 20 with a solar cell with a portion that is not visually recognized. In addition, the transmissive reflector 8 may be incorporated into the solar cell-equipped electronic timepiece 20 by using a dedicated jig in which a grip portion is formed of a flexible material so that both ends of the transmissive reflector 8 are not damaged. Is possible.

  Further, as another method of assembling the transmissive reflector 8 when the projection 10 is not provided on the transmissive reflector 8, the ring-shaped solar cell 2 extends straight before the ring-shaped solar cell 2 is rolled into a ring shape. A transparent reflecting plate 8 is attached to the surface of the battery 2 on which the power generation region 142 is formed by bonding or the like, and the ring-shaped solar cell 2 in which the transmitting reflecting plate 8 is integrated is rounded to form a solar cell holding member 9. It is also possible to incorporate it.

  Further, in the present embodiment and each modification, the protrusions 10 of the transmissive reflector 8 are provided only in the vicinity of both end portions of the band-shaped portion 8a, but are added in addition to the vicinity of both end portions such as the central portion of the band-shaped portion 8a. You may do it. In that case, it is good to form the latching | locking part engaged with the added projection part 10 in the dial ring 3 or the solar cell holding member 9. FIG.

  In the present embodiment and the first to third modifications, the protrusions 10 provided in the vicinity of both end portions of the band-like portions 8a of the transmissive reflectors 8 and 12 are on the opposite side of the dial 5. Although protruding, the protruding portion 10 may protrude toward the dial 5 side. In this case, a locking portion for locking the protruding portion 10 is provided on the lower surface of the facing ring 3 or the lower surface of the solar cell holding member 9, and the protruding portion 10 is bent toward the facing ring 3 or the solar cell holding member 9 side. Any one of the locking portions may be locked.

  Similarly, in the fourth modification and the fifth modification, the protrusions 10c and 10d of the transmissive reflecting plate 8 are provided on the belt-like portion 8a so as to protrude on the side opposite to the dial 5, and these protrusions You may bend | fold to the lower surface side of the dial ring 3 or the lower surface side of the solar cell holding member 9, in the state which mutually engaged the part 10c, 10d.

  Further, in the transmissive reflectors 8 and 12 of the first to third modifications, the protrusion 10 may be bent in the direction opposite to the direction exemplified in each modification. For example, in the first and third modifications, the protruding portion 10 may be bent toward the solar cell holding member 9 and a locking portion for locking the protruding portion 10 may be formed in the solar cell holding member 9. In the modified example, the protruding portion 10 may be bent to the side of the ring 3 and the locking portion for locking the protrusion 10 may be formed on the surface of the ring 3.

  Moreover, in this embodiment and the 1st modification to the 3rd modification, when it is comprised so that the projection part 10 may be bent in the solar cell holding member 9 side, exclusive latching which latches the projection part 10 It is also possible to provide the member in the electronic timepiece 20 with a solar cell.

  Moreover, in this embodiment and each modification, although the both ends of the transmissive reflecting plate 8 were overlapped and integrated in the electronic timepiece 20 with a solar cell, for example, one end is at the 10 o'clock position and the other is The end portion is at the 2 o'clock position, and between the 10 o'clock position and the 2 o'clock position, both ends of the transmissive reflecting plate 8 are separated from each other, and the separated portions can be used as the design of the electronic timepiece 20 with a solar cell. Is possible.

Further, in the present embodiment, the first modified example, and the third modified example, the convex portion 11 formed on the facing ring 3 protrudes from the upper surface flat surface 3a. A stepped portion that is recessed with respect to the portion 3a may be formed, and the convex portion 11 may be formed in the stepped portion so that the upper end portion of the convex portion 11 does not protrude from the upper flat surface 3a.

DESCRIPTION OF SYMBOLS 1 ... Windshield 2 ... Ring-shaped solar cell 3 ... Counter ring 3a ... Upper surface flat part 4 ... Pointer 5 ... Dial 6 ... Movement 7 ... Watch case 8 ... Transmissive reflector 9 ... Solar cell holding member 9a ... Step part 10 ... Protrusions 11 ... Convex parts 12 ... Transparent reflector 13 ... Prism 20 ... Electronic timepiece with solar cell 141 ... Substrate 142 ... Power generation region 143 ... Terminal 144 ... Non-power generation region

Claims (4)

Dial,
A light-transmitting dial ring disposed along the outer edge of the dial;
A solar cell-equipped electronic timepiece having a power generation region opposed to an outer peripheral surface of the dial ring and a solar cell disposed so as to surround the dial ring,
A transmissive reflector is disposed between the outer peripheral surface of the facing ring and the solar cell ,
The transmissive reflector has a strip-like portion surrounding the outer peripheral surface of the dial ring, and a plurality of protrusions,
The plurality of protrusions are provided in the vicinity of both end portions in the length direction of the belt-shaped portion,
The plurality of protrusions are formed so as to be bendable on the facing ring side or the opposite side,
The electronic timepiece with a solar cell has a solar cell holding member in which a holding portion standing on the outside of the solar cell is formed in order to hold the solar cell in a state facing the outer peripheral surface of the dial ring. And
In the state where the transmissive reflecting plate is disposed between the outer peripheral surface of the dial ring and the solar cell, a locking portion that locks the bent protrusion is used as the dial ring or the solar cell holding member. An electronic timepiece with a solar battery characterized by being provided in the above. 2. The electronic timepiece with a solar cell according to claim 1 , wherein the plurality of projecting portions are provided on the transmissive reflecting plate so as to protrude from the belt-like portion to the opposite side of the dial. In a state in which the plurality of protrusions are locked to the locking portion, the protrusions are located at positions where one end in the length direction of the transmissive reflecting plate overlaps with a band-shaped portion of the transmissive reflecting plate. and the locking portion, respectively, a solar cell with an electronic timepiece according to claim 1 or 2, characterized in that provided in said transmissive reflection plate and the dial ring or the solar battery holding member. 4. The electronic timepiece with a solar cell according to claim 1 , wherein the protruding portion is bent toward the solar cell holding member, and the locking portion is provided on the solar cell holding member. 5.

Images