JP6544425B2 - Solar panels and watches - Google Patents

Description

  The present invention relates to a solar panel used in a pointer-type watch such as a watch or a pointer-type instrument such as a meter, and a timepiece provided with the same.

  For example, as described in Patent Document 1, a solar panel used in a wrist watch is formed by forming a plurality of solar cells in a fan shape of equal area, and arranging the plurality of solar cells in a circular shape. The thing of the structure connected in series is known.

Japanese Patent Application Laid-Open No. 10-39057

  The solar panel has a through hole at its center, a pointer shaft is inserted into the through hole and protrudes upward, and a pointer is attached to the upper end of the protruding pointer shaft, and the pointer is a plurality of solar cells It is configured to move upward.

  In such a solar panel, the output current obtained by the plurality of solar cells as a whole becomes the same value as the one with the smallest output current among the plurality of solar cells due to the electrical characteristics such as the diode. For this reason, when the pointer is overlapped with any of the plurality of solar cells, the light receiving area of the solar cell in which the pointer is overlapped is smaller than the light receiving area of the other solar cells.

  For this reason, in this solar panel, the output current of the solar cell with overlapping pointers is smaller than the output current of the other solar cells, and the output current obtained across multiple solar cells is the smallest output current of the solar cell. Since it becomes the same value, there is a problem that the loss of the output current of a plurality of solar cells is large.

  The problem to be solved by the present invention is to provide a solar panel and a clock capable of minimizing the fluctuation of the light receiving area by the pointer, making the light receiving amount of each cell almost equal and maximizing the output current. It is to be.

According to the present invention, in a solar panel in which a pointer shaft is inserted into a through hole provided in a central portion, and a pointer attached to the pointer shaft moves upward, a central cell formed around the through hole; and an outer periphery to the outer periphery cells of the central cell, the center cell and the peripheral cell the pointer is heavy Do Ri, the pointer is in hand movement, a solar panel, characterized in that overlaps with the center cell.

According to the present invention, it is possible to substantially equalize the light reception amounts of the central cell and the peripheral cells , so that the output current of the entire cell can be stabilized at a high value, thereby maximizing the output current of the entire cell. It can be improved.

It is an expanded sectional view showing a watch module in a 1st embodiment which applied this invention to a pointer type watch. FIG. 2 shows the hands of the watch module shown in FIG. 1, where (a) is an enlarged front view showing a second hand, (b) is an enlarged front view showing a minute hand, and (c) is an enlarged front view showing an hour hand . It is an enlarged front view showing a solar panel of the watch module shown in FIG. It is an expanded sectional view in the AA arrow of the connection part of the solar panel shown by FIG. It is an enlarged front view showing a solar panel in a second embodiment in which the present invention is applied to a pointer type wristwatch. It is an enlarged front view of a wristwatch according to a third embodiment of the present invention applied to a pointer type wristwatch. FIG. 7 is an enlarged front view showing a solar panel of the watch shown in FIG. 6; It is the enlarged front view which showed the modification of the solar panel in 3rd Embodiment shown by FIG. It is an enlarged front view showing a solar panel in a 4th embodiment which applied this invention to a pointer type watch. It is an enlarged front view showing a solar panel in a 5th embodiment which applied this invention to a pointer type watch. The 6th Embodiment which applied this invention to the pointer type wristwatch is shown, (a) is an enlarged front view which showed the timepiece module, (b) is an enlarged front view which showed the solar panel. The 7th Embodiment which applied this invention to the pointer type wristwatch is shown, (a) is an enlarged front view which showed the timepiece module, (b) is an enlarged front view which showed the solar panel.

First Embodiment
Hereinafter, a first embodiment in which the present invention is applied to a pointer type wristwatch will be described with reference to FIGS. 1 to 4.
This pointer type wristwatch is provided with a clock module 1 as shown in FIG. The watch module 1 is disposed in a watch case (not shown) and has a housing 2.

  As shown in FIG. 1, a solar panel 3 is disposed on the upper surface of the housing 2, and a dial 4 is disposed on the upper surface of the solar panel 3. In addition, a watch movement 5 is provided inside the housing 2. The timepiece movement 5 is configured to move the hands 7, such as the hour hand 7a, the minute hand 7b, and the second hand 7c, by rotating the hand shaft 6.

  In this case, the dial 4 is made of a transparent or translucent film, and is formed in a substantially circular shape. At the peripheral edge of the upper surface of the dial 4, time letters (not shown) are provided at predetermined intervals. As shown in FIG. 1, the pointer shaft 6 is rotatably disposed in a cylindrical hour hand shaft 6a, a cylindrical minute hand shaft 6b rotatably disposed in the hand shaft 6a, and the minute hand shaft 6b. And the second hand spindle 6c.

  As shown in FIG. 1, the pointer shaft 6 is provided above the dial 4 through the through hole 3 a provided in the central portion of the solar panel 3 and the through hole 4 a provided in the central portion of the dial 4. It is configured to protrude. Further, as shown in FIGS. 1 and 2, the pointer 7 is attached to the upper end of the pointer shaft 6.

  That is, as shown in FIGS. 1 and 2, the hour hand 7a is attached to the upper end of the hour hand shaft 6a, the minute hand 7b is attached to the upper end of the minute hand shaft 6b, and the second hand 7c is the second hand shaft 6c. Is attached to the upper end of the Thereby, the watch movement 5 rotates the pointer shaft 6 such as the hour hand shaft 6a, the minute hand shaft 6b, and the second hand shaft 6c to move the hands 7 such as the hour hand 7a, the minute hand 7b, and the second hand 7c above the dial 4 Is configured as.

  In this case, among the hour hand 7a, the minute hand 7b, and the second hand 7c, the minute hand 7b is formed to have the largest surface area as compared with the hour hand 7a and the second hand 7c as shown in FIGS. There is. That is, the minute hand 7b is longer than the hour hand 7a and formed to have substantially the same length as the second hand 7c, and the width (length in the direction orthogonal to the longitudinal direction) is slightly narrower than the hour hand 7a. (Short) and wider (longer) than the second hand 7c.

  By the way, as shown to FIG. 1 and FIG. 3, the solar panel 3 is formed in circular shape substantially the same size as the dial 4. As shown in FIG. The solar panel 3 has a central cell 10 formed in a circular shape centering on the through hole 3a provided at the central portion thereof, and a plurality of light receiving areas formed on the outer periphery of the central cell 10 with substantially the same size. Outer peripheral cells 11-15. As shown in FIGS. 3 and 4, the central cell 10 and the plurality of outer peripheral cells 11 to 15 are arranged in a circle on the top surface of the film substrate 8 around the through hole 3 a.

  In this case, as shown in FIG. 4, in the central cell 10 and the plurality of outer peripheral cells 11 to 15, the lower electrode 16 made of metal such as aluminum is patterned on the film substrate 8, and amorphous on the lower electrode 16. A power generation layer 17 formed of a semiconductor layer such as silicon (a-Si) is patterned, a transparent upper electrode 18 such as ITO (Indium Tin Oxide) is patterned on the power generation layer 17, and the upper electrode 18 is insulated. It is the structure covered by the protective film 19 which consists of a transparent synthetic resin which has property.

  Thereby, as shown in FIG. 1 and FIG. 4, when the central cell 10 and the plurality of outer peripheral cells 11 to 15 are irradiated with external light through the dial 4, the irradiated light is transparent. The power generation layer 17 is irradiated with the light through the upper electrode 18, and the power generation layer 17 is configured to generate an electromotive force by the irradiated light.

  By the way, as shown in FIG. 3, the shape and the size of each of the central cell 10 and the plurality of outer peripheral cells 11 to 15 are set such that the amount of light received is substantially the same. That is, the central cell 10 is formed such that the light receiving area of the central cell 10 is larger than the light receiving areas of the plurality of outer peripheral cells 11 to 15 in consideration of the light blocking area where the pointer 7 overlaps this. That is, in this central cell 10, the light receiving area of the central cell 10 is larger than the light receiving areas of the plurality of outer peripheral cells 11 to 15 by the substantially average light blocking area of the maximum light blocking area and the minimum light blocking area Is also formed large.

  In this case, the maximum light blocking area where the hands 7 overlap in the area of the central cell 10 is that, as shown in FIG. 3, all of the hour hand 7a, the minute hand 7b and the second hand 7c do not overlap with each other. This is the area of the portion shaded by the pointer 7 when it is positioned in an irregular state on the area. The minimum light blocking area where the hands 7 overlap in the area of the central cell 10 is determined by the hands 7 when all of the hour hand 7a, the minute hand 7b, and the second hand 7c overlap each other and are positioned on the area of the central cell 10. It is the area of the part to be a shadow.

  Further, as shown in FIG. 3, the plurality of outer peripheral cells 11 to 15 are all formed in the same fan shape and in the same size. That is, the plurality of outer peripheral cells 11 to 15 have a light receiving area where the respective light receiving areas overlap the pointer 7 in the area of the central cell 10 than the light receiving area of the central cell 10, that is, the maximum light blocking area and the minimum light shielding by the hands 7 The area is made smaller by approximately the average light shielding area.

  The plurality of outer peripheral cells 11 to 15 are configured such that the hour hand 7a of the hands 7 hardly overlaps in each region, and the tip portions of the minute hand 7b and the second hand 7c selectively overlap. Therefore, the central cell 10 is formed to have a large light receiving area in order to stably receive most of the shadow by the pointer 7, and the plurality of outer peripheral cells 11 to 15 are almost affected by the shadow by the pointer 7. Because they do not exist, they are all formed with the same light receiving area.

  Furthermore, as shown in FIG. 3 and FIG. 4, the central cell 10 and the plurality of outer peripheral cells 11 to 15 are sequentially connected in series by a plurality of connection portions 20. That is, the plurality of connection portions 20 are each made of a conductive paste, and the lower electrodes 16 of the cells 10 to 15 adjacent to each other and the upper electrodes 18 of the other cells 10 to 15 adjacent thereto are respectively It is comprised so that it may connect electrically.

  In this case, it is desirable that the plurality of connection portions 20 be provided in a portion which does not have a light receiving area such as the time stamp of the dial 4 or a printing mark. For example, as shown in FIG. 3, the outer peripheral cell 11 and the outer peripheral cell 12 adjacent to the outer peripheral cell 11 are connected by the connection portion 20 at the outer peripheral portion thereof. The outer peripheral cell 12 and the central cell 10 are connected by a connection portion 20.

  Similarly, as shown in FIG. 3, the central cell 10 and the outer peripheral cell 13 are connected by the connection portion 20. The outer peripheral cell 13 and the outer peripheral cell 14 adjacent to the outer peripheral cell 13 are connected by the connection portion 20 at the outer peripheral portion thereof. Furthermore, the outer peripheral cell 14 and the outer peripheral cell 15 adjacent to the outer peripheral cell 14 are connected by the connection portion 20 at the outer peripheral portion thereof.

  In this case, among the central cell 10 and the plurality of outer peripheral cells 11 to 15, the two outer peripheral cells 11 and 15 located at the final end are not connected by the connection portion 20 as shown in FIG. For this reason, the upper electrode 18 of one outer peripheral cell 11 is connected to the output terminal 20a located at the outer peripheral portion thereof, and the lower electrode 16 of the other outer peripheral cell 15 is connected to the output terminal 20b located at the outer peripheral portion It is connected.

  The pair of output terminals 20 a and 20 b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 1. Thus, the solar panel 3 is configured to supply the generated electric power to a rechargeable battery (not shown) of the watch module 1.

Next, the operation of such a pointer-type watch will be described.
Normally, since power is supplied to the watch movement 5, the watch movement 5 operates to rotate the pointer shaft 6, and rotation of the pointer shaft 6 causes the hands 7 such as the hour hand 7a, the minute hand 7b, and the second hand 7c. Move the upper part of the dial 4 to indicate the time.

  At this time, external light such as sunlight is irradiated to the dial 4, and the irradiated external light is transmitted through the dial 4 and irradiated to the cells 10 to 15 of the solar panel 3. Then, the irradiated external light passes through the transparent protective film 19 and the transparent upper electrode 18 of each of the cells 10 to 15, respectively, and is irradiated to each of the power generation layers 17, and each of the power generation layers 17 is irradiated with this irradiated light. Respectively generate power.

  That is, when the external light is irradiated, each power generation layer 17 of the central cell 10 and the plurality of outer peripheral cells 11 to 15 generates an electromotive force according to the irradiation amount. The generated electromotive force is stored in the battery of the timepiece module 1 from the output terminals 20a and 20b of the peripheral cells 11 and 15 at the final end by connecting the cells 10 to 15 in series by the connection portions 20. It is sent to (not shown) and charged.

  Thus, when the solar panel 3 generates power, as shown in FIG. 3, even if a part of the external light irradiated to the solar panel 3 is blocked by the pointer 7 moving the upper side of the dial 4, The central cell 10 and the plurality of outer peripheral cells 11 to 15 respectively generate power almost equally and output stable power.

  That is, among the central cell 10 and the plurality of outer peripheral cells 11 to 15, in the central cell 10, as shown in FIG. 3, the three hands 7 of the hour hand 7a, the minute hand 7b, and the second hand 7c always move while overlapping Since the light receiving area of the central cell 10 is formed larger than the light receiving areas of the plurality of outer peripheral cells 11 to 15 in consideration of the overlap of the pointers 7, the light receiving areas of the central cell 10 are the plurality of outer peripheral cells 11. It becomes almost the same as each light receiving area of ~ 15.

  At this time, one or both of the tip portions of the minute hand 7 b and the second hand 7 c overlap any of the plurality of outer peripheral cells 11 to 15. For this reason, the light reception area of the outer peripheral cells 11 to 15 in the portion where the tip portions of the minute hand 7b and the second hand 7c overlap is slightly reduced. Thereby, the fluctuation of the light receiving areas of the central cell 10 and the plurality of outer peripheral cells 11 to 15 caused by the overlapping of the hands 7 is minimized.

  For this reason, each light reception amount of all the cells 10-15 of the center cell 10 and several outer periphery cells 11-15 becomes substantially equal. Thus, regardless of the movement position of the pointer 7, the output current output from the entire solar panel 3 can be stably obtained at a high value, and the current value output from the entire solar panel 3 can be maximized.

  In this case, when the central cells 10 have the same area, it is a circle that has the smallest outer peripheral length, and the area is larger than the respective areas of the outer peripheral cells 11-15. Therefore, for example, the total length of the required area boundaries of each cell 10 to 15 is greater than the total length of the area boundaries of each existing cell, as compared with the existing cells obtained by dividing the circle radially equally. Also become shorter. Thereby, a larger light receiving area can be obtained by reducing the area of each of the cells 10 to 15 required for division.

For example, assuming that the radius of the solar panel 3 is R, the radius of the central cell 10 is X, and the number of divided cells 10 to 15 is S,
X <R / {2 · π-S + 1} Equation 1
When set so that the total length of the area boundaries of each of the cells 10 to 15 becomes short.

  That is, when the number of divided cells 10 to 15 is six, the above equation 1 is satisfied when (X / R) becomes smaller than (1 / (2π-5)). The central cell 10 at this time is larger than the outer peripheral cells 11-15. For this reason, (X / R) becomes larger than (1 / √6). For this reason, the light receiving area can be widened in the range of (1 / √6) <(X / R) <(1 / (2π−5)).

  In the case where each cell is divided into five cells, considering that the light receiving area of the central cell is larger than that of the four outer peripheral cells, the total length of the area boundary of each cell is opposite to the case described above. Since it becomes long and the above equation 1 is not satisfied, the area of the outer peripheral cell becomes larger than the area of the central cell, resulting in a loss of light receiving amount.

  Thus, according to the solar panel 3 in this pointer type wristwatch, the central cell 10 formed in a circular shape centering on the through hole 3a in the central portion into which the pointer shaft 6 is inserted and the outer periphery of the central cell 10 The central cell 10 has a plurality of outer peripheral cells 11 to 15 formed with light receiving areas of approximately the same size, and in consideration of a light shielding area for which the pointer 7 attached to the pointer shaft 6 overlaps the central cell 10 Since the light receiving area is formed larger than the light receiving areas of the plurality of outer peripheral cells 11 to 15, the variation of the light receiving area of each of the cells 10 to 15 by the pointer 7 is minimized, and the light receiving of each of the cells 10 to 15 is performed. The amount can be substantially equalized to maximize the output current.

  That is, according to this solar panel 3, when the pointer 7 moves above the central cell 10 and the plurality of outer peripheral cells 11 to 15, the pointer 7 always overlaps the central cell 10, and the plurality of outer peripheral cells 11 to 15 Even if a part of the pointer 7 overlaps any of them, it is possible to minimize the fluctuation of the light receiving area of the central cell 10 and the plurality of outer peripheral cells 11 to 15 caused by the overlapping of the pointer 7.

  Therefore, the light reception amounts of the central cell 10 and the plurality of outer peripheral cells 11 to 15 can be made substantially equal, so the output current of the entire cells 10 to 15 is stabilized at a high value regardless of the hand position of the pointer 7 This can maximize the output current of the entire cell 10-15.

  In this case, in the central cell 10, the light receiving area of the central cell 10 is larger than the light receiving areas of the plurality of outer peripheral cells 11 to 15 by approximately the average light blocking area of the maximum light blocking area and the minimum light blocking area Even if the pointer 7 always overlaps the central cell 10 and the central cell 10 is shielded by being formed, the amount of light received by the central cell 10 and the amount of light received by the plurality of outer peripheral cells 11 to 15 are approximately the same value. can do.

  For this reason, even if a part of the pointer 7 overlaps any of the plurality of outer peripheral cells 11 to 15, the fluctuation of the light receiving area of the central cell 10 and the plurality of outer peripheral cells 11 to 15 caused by the overlapping of the pointers 7 is minimized. Therefore, regardless of the movement position of the pointer 7, the light reception amounts of the central cell 10 and the plurality of outer peripheral cells 11 to 15 can be made substantially equal.

  Further, in the solar panel 3, the central cell 10 and the plurality of outer peripheral cells 11 to 15 are connected in series by the connection portions 20, so that the solar cell 3 is not easily affected by the pointer 7. The power generated by the central cell 10 and the plurality of outer peripheral cells 11 to 15 can be efficiently supplied to the timepiece module 1 while minimizing fluctuations in the light receiving areas of the outer peripheral cells 11 to 16.

Second Embodiment
Next, with reference to FIG. 5, a second embodiment in which the present invention is applied to a pointer type wristwatch will be described. The same parts as those in the first embodiment shown in FIGS. 1 to 4 are described with the same reference numerals.
This pointer type wristwatch has a configuration in which a display window 26 which is a non-light receiving area is provided in the solar panel 25 as shown in FIG. 5, and the other configuration is the same as that of the first embodiment.

  In this case, the solar panel 25 is formed in a circular shape of substantially the same size as the dial 4 as in the first embodiment. The solar panel 25 has a central cell 27 formed in a circular shape centering on the through hole 25a provided in the central portion, and a plurality of light receiving areas formed on the outer periphery of the central cell 27 with substantially the same size. Outer peripheral cells 28 to 32 of FIG.

  Also in this case, as in the first embodiment, the shape and size of each of the central cell 27 and the plurality of outer peripheral cells 28 to 32 are set such that the amount of light received is substantially the same. There is. That is, also in the central cell 27, the light receiving area of the central cell 27 is formed larger than the light receiving areas of the plurality of outer peripheral cells 28 to 32 in consideration of the light blocking area where the pointers 7 overlap in that area. .

  That is, as shown in FIG. 5, this central cell 27 has an outer peripheral cell 28 in which the light receiving area of the central cell 27 is equal to a plurality of average light blocking areas of the maximum light blocking area and the minimum light blocking area It is formed larger than each light reception area of -32.

  On the other hand, as shown in FIG. 5, the display window section 26 which is a non-light receiving area is arranged corresponding to the display panel 233 below and the information displayed on the display panel 33 can be seen from the outside through the dial 4 Is configured as. In this case, the display panel 33 is a flat display panel such as a liquid crystal display panel or an EL (electroluminescence) display panel, and is configured to electro-optically display information such as time.

  The display window portion 26 is a rectangular hole as shown in FIG. 5 and is provided at a position located on the 6 o'clock side of the solar panel 25. In this case, the display window 26 is provided on the solar panel 25 in a state of being surrounded by the central cell 27 and the two outer peripheral cells 28 and 32 on the 6 o'clock side.

  That is, as shown in FIG. 5, in the display window portion 26, a portion of the upper side portion is adjacent to the lower side of the central cell 27 and bites into two outer peripheral cells 28 and 32 located at 6 o'clock side. It is provided to be adjacent. Thus, the light receiving area of the entire solar panel 25 is the area obtained by subtracting the area of the display window 26 from the area of the entire solar panel 25.

  For this reason, the central cell 27 is formed in the shape where the lower side part was shaved off. Further, the two outer peripheral cells 28 and 32 positioned on the 6 o'clock side are formed in a shape in which the left and right half portions of the display window portion 26 are cut into each other. Thus, as shown in FIG. 5, the central cell 27 and the plurality of outer peripheral cells 28 to 32 are formed so that the amounts of light received are substantially the same, even if their shapes are different.

  That is, as shown in FIG. 5, the central cell 27 has a light receiving area of the central cell 27 of a plurality of outer peripheral cells 28 to a substantially average light shielding area of the maximum light shielding area and the minimum light shielding area overlapping the pointer 7 in that area. It is formed larger than the 32 light receiving areas. Further, the plurality of outer peripheral cells 28 to 32 are formed such that the light receiving areas have the same size, even if the shapes are different.

  Further, in the solar panel 25 as well, as in the first embodiment, the solar panels 25 are sequentially connected in series by the plurality of connecting portions 20. That is, the plurality of connection portions 20 are each made of a conductive paste, and the lower electrodes 16 of the cells 27 to 32 adjacent to each other and the upper electrodes 18 of the other cells 27 to 32 adjacent to the lower electrodes 16 are respectively It is comprised so that it may connect electrically.

  Also in this case, among the central cell 27 and the plurality of outer peripheral cells 28 to 32, two outer peripheral cells 28 and 32 located at the final end are not connected by the connection portion 20 as shown in FIG. Therefore, as in the first embodiment, the upper electrode 18 of one of the outer peripheral cells 28 is connected to the output terminal 20a located in the outer peripheral portion, and the lower electrode 16 of the other outer peripheral cell 32 is the outer peripheral portion thereof. Are connected to the output terminal 20b located at

  The pair of output terminals 20a and 20b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 1, as in the first embodiment. Thus, the solar panel 25 is configured to supply the generated electric power to a rechargeable battery (not shown) of the watch module 1.

Next, the operation of the solar panel 25 in such a pointer-type watch will be described.
A pointer 7 such as an hour hand 7a, a minute hand 7b, and a second hand 7c is moved by the clock movement 5 above the dial 4 to indicate a time. At this time, the display panel 33 is driven to display information such as the time, and the displayed information can be seen from above the dial 4 through the display window portion 26.

  At this time, external light such as sunlight is applied to the dial 4, and the applied external light is transmitted through the dial 4 and applied to the cells 27 to 32 of the solar panel 25. The irradiated external light is irradiated to each power generation layer 17 of each of the cells 27 to 32 as in the first embodiment, and the generated light is generated by each irradiated light, and the generated power is The battery is sent from the output terminals 20a and 20b of the outer peripheral cells 28 and 32 to the rechargeable battery (not shown) of the timepiece module 1 to be charged.

  Thus, when the solar panel 25 generates power, as shown in FIG. 5, in the central cell 27 among the central cell 27 and the plurality of outer peripheral cells 28 to 32, 3 of the hour hand 7a, the minute hand 7b, and the second hand 7c. Although the hands are operated in a state where the two pointers 7 always overlap, since the light receiving area of the central cell 27 is formed larger than the light receiving areas of the plurality of outer peripheral cells 28 to 32 in consideration of the overlap of the pointers 7, Even when the display window portion 26 is provided, the light receiving area of the central cell 27 is substantially the same as the light receiving areas of the plurality of outer peripheral cells 28 to 32.

  At this time, as in the first embodiment, the variation in the light receiving area of the central cell 27 and the plurality of outer peripheral cells 28 to 32 caused by the overlapping of the hands 7 is minimized. For this reason, even if the display window part 26 is provided, each light reception amount of all the cells 27-32 of the center cell 27 and several outer periphery cells 28-32 becomes substantially equal. Thereby, the output current output from the entire solar panel 25 can be stably obtained at a high value regardless of the moving position of the display window 26 and the pointer 7, and the current value output from the entire solar panel 25 is maximal Be enhanced.

  Thus, according to the solar panel 25 of this wristwatch, the central cell 27 and the two outer peripheral cells 28 to 32 among the central cell 27 and the plurality of outer peripheral cells 28 to 32 are surrounded by the two outer peripheral cells 28 and 32 located on the 6 o'clock side. By providing the display window portion 26 which is a light receiving area, the display panel 33 can be provided below the display window portion 26, whereby information displayed on the display panel 33 through the display window portion 26 can be obtained. It can be seen well.

  Also in this case, the solar panel 25 has a plurality of light receiving areas of the central cell 27 in consideration of a light blocking area in which the pointer 7 attached to the pointer shaft 6 overlaps the central cell 27 as in the first embodiment. By being formed larger than the respective light receiving areas of the outer peripheral cells 28 to 32, even if the display window 26 which is a non-light receiving area is provided, the fluctuation of the light receiving area of each of the cells 27 to 32 by the pointer 7 is minimized. Since the amount of light received by each of the cells 27 to 32 can be substantially equalized, the output current can be maximized.

  That is, in the solar panel 25 as well, when the pointer 7 moves above the central cell 27 and the plurality of outer peripheral cells 28 to 32, the pointer 7 always overlaps the central cell 27 and any of the plurality of outer peripheral cells 28 to 32 Even if a part of the pointer 7 overlaps, the fluctuation of the light receiving area of the central cell 27 and the plurality of outer peripheral cells 28 to 32 caused by the overlapping of the pointer 7 can be minimized.

  For this reason, even if the display window portion 26 which is a non-light receiving area is provided, the light reception amounts of the central cell 27 and the plurality of outer peripheral cells 28 to 32 can be substantially equalized. Regardless, the output current of all cells 27-32 can be stabilized at a high value, which can maximize the output current of all cells 27-32.

  Also in this case, the central cell 27 has a light receiving area of the central cell 27 equal to the light receiving area of the plurality of outer peripheral cells 28 to 32 by an almost average light blocking area of the maximum light blocking area and the minimum light blocking area Also, even if the pointer 7 always overlaps the central cell 27 and the central cell 27 is shielded from light, the light reception amount of the central cell 27 and the light reception amounts of the plurality of outer peripheral cells 28 to 32 are substantially the same. It can be a value.

  Therefore, even if a part of the pointer 7 overlaps any of the plurality of outer peripheral cells 28-32, the fluctuation of the light receiving area of the central cell 27 and the plurality of outer peripheral cells 28-32 caused by the overlapping of the pointers 7 is minimized. Therefore, regardless of the positions of the display window 26 and the pointer 7 which are non-light receiving areas, the amounts of light received by the central cell 27 and the plurality of outer peripheral cells 28 to 32 can be substantially equalized.

Third Embodiment
Next, with reference to FIG. 6 and FIG. 7, a third embodiment in which the present invention is applied to a pointer type wristwatch will be described. Also in this case, the same parts as those of the first embodiment shown in FIGS. 1 to 4 are described with the same reference numerals.
This pointer type watch is provided with a watch case 40 as shown in FIG. In the watch case 40, a watch module 41 is provided.

  As shown in FIG. 6, the clock module 41 operates the pointer 7, the first function hand 42, the second function hand 43, the third function hand 44, and the clock movement 5 for driving the date wheel 45 (see FIG. 1). And an antenna (not shown) for GPS reception. As shown in FIGS. 6 and 7, the watch module 41 is configured such that the solar panel 46 and the dial 47 are disposed on the top thereof.

  In this case, the first function hand 42, the second function hand 43, and the third function hand 44 are configured to move the upper side of the dial 47 as shown in FIG. It is shaped and the date is printed on the top. The date wheel 45 rotates by a predetermined angle in 24 hours while being disposed below the solar panel 46, and the date sequentially corresponds to the date window 45a of the dial 47, so that the date is shifted every 24 hours. Are configured to switch.

  Similar to the first embodiment, the dial 47 is a transparent or semi-transparent film, and as shown in FIG. 6, the outer circumference is provided with time letters 48a, graduations 48b, world time city names 48c along an annular shape. Are configured to be Further, on the 10 o'clock side of the dial 47, the first scale portion 42a of the first function hand 42 is provided in a circular shape, and on the 3 o'clock side of the dial 47, the second function needle 43 is The second scale portion 43a is provided in a circular shape.

  Further, on the 7 o'clock side of the dial 47, as shown in FIG. 6, the function display portion 44a of the third function hand 44 is provided in a circular shape, and on the 4 o'clock side of the dial 47, A date window 45a corresponding to the date of the date wheel 45 is provided. In this case, only the necessary portions of the dial 47 are printed on the scale portion 42a of the first function hand 42, the scale portion 43a of the second function hand 43, and the function display portion 44a of the third function hand 44. The printed area slightly intercepts the external light, but otherwise is configured to transmit light.

  On the other hand, as shown in FIG. 7, the solar panel 46 is formed in a circular shape having substantially the same size as the dial 47. The solar panel 46 is formed with a central cell 50 formed in a circular shape along the periphery of the through hole 46 a provided in the central portion, and a light receiving area of approximately the same size on the outer periphery of the central cell 50. A plurality of outer peripheral cells 51 to 57 and a non-light receiving area portion 58 provided corresponding to an antenna (not shown) for GPS reception are provided.

  Also in this case, in the central cell 50 and the plurality of outer peripheral cells 51 to 57, the shapes and sizes of the respective cells 50 to 57 are set so that the amounts of received light are substantially the same as in the first embodiment. There is. That is, also in the central cell 50, the light receiving area of the central cell 50 is formed larger than the light receiving areas of the plurality of outer peripheral cells 51 to 57 in consideration of the light blocking area where the pointers 7 overlap in that area. .

  That is, as shown in FIG. 7, the central cell 50 has an outer peripheral cell 51 in which the light receiving area of the central cell 50 is a plurality of peripheral cells 51 by an almost average light shielding area of the maximum light shielding area and the minimum light shielding area It is formed larger than each light receiving area of ~ 57.

  On the other hand, as shown in FIG. 7, in the non-light receiving area 58, an antenna (not shown) for GPS reception is arranged corresponding to the lower side thereof. The semiconductor is removed, and it is formed only by the film substrate 8 (see FIG. 4) made of synthetic resin. In this case, the non-light receiving area portion 58 is colored in the same color as each of the cells 50-57.

  As shown in FIG. 7, the non-light receiving area portion 58 is formed in a substantially rectangular shape at a position ranging from 4 o'clock to 6 o'clock of the solar panel 46. In the non-light receiving area portion 58, a date hole 58a corresponding to the date window portion 45a of the dial plate 47 is provided. Thus, the date of the date indicator 45 is configured to be visible from the date window 45 a of the dial 47 through the date holes 58 a of the solar panel 46.

  That is, as shown in FIG. 7, in the non-light receiving area portion 58, two outer peripheral cells 51 are disposed such that a part of the upper side portion is adjacent to the lower side of the central cell 50 and is located at 4 o'clock and 6 o'clock. , 57 are provided adjacent to each side. Thus, the light receiving area of the entire solar panel 46 is an area obtained by subtracting the area of the non-light receiving area portion 58 from the area of the entire solar panel 46.

  For this reason, the center cell 50 is formed in the shape where the lower side part was shaved off. Further, the two outer peripheral cells 51 and 57 located on the 4 o'clock side and the 6 o'clock side are formed in a shape scraped along both sides of the non-light receiving area 58. Thus, as shown in FIG. 7, the central cell 50 and the plurality of outer peripheral cells 51 to 57 are formed so that their respective amounts of received light become substantially the same, even if their shapes are different.

  That is, as shown in FIG. 7, in the central cell 50, the light receiving area of the central cell 50 is a plurality of outer peripheral cells 51 to 5 as much as the average light shielding area of the maximum light shielding area and the minimum light shielding area It is formed larger than each light receiving area of 57. Further, the plurality of outer peripheral cells 51 to 57 are formed such that the light receiving areas have substantially the same size, even if the shapes are different.

  In this case, among the plurality of outer peripheral cells 51 to 57, the outer peripheral cell 53 located on the 10 o'clock side is provided with a through hole 53a corresponding to the rotation center of the first function needle 42 as shown in FIG. ing. Further, in the outer peripheral cell 57 located on the 3 o'clock side, a through hole 57 a is provided corresponding to the rotation center of the second function needle 43. Furthermore, in the outer peripheral cell 51 located on the 7 o'clock side, a through hole 51 a is provided corresponding to the rotation center of the third function needle 44.

  Thereby, as shown in FIG. 7, the central cell 50 and the plurality of outer peripheral cells 51 to 57 are shaded by the first to third functional needles 42 to 44, and the first and second graduations The light receiving areas are formed so as to have substantially the same size, even if the shapes are different, in consideration of the portions to be shaded by the portions 42a and 43a and the function display portion 44a.

  Further, in the solar panel 46 as well, as in the first embodiment, the solar panels 46 are sequentially connected in series by the plurality of connection portions 20. That is, the plurality of connection portions 20 are each made of a conductive paste, and the lower electrodes 16 of the cells 50 to 57 adjacent to each other and the upper electrodes 18 of the other cells 50 to 57 adjacent thereto are respectively It is comprised so that it may connect electrically.

  Also in this case, among the central cell 50 and the plurality of outer peripheral cells 51 to 57, the two outer peripheral cells 52 and 53 located at the final end are not connected by the connecting portion 20 as shown in FIG. For this reason, the upper electrode 18 of one outer peripheral cell 52 is connected to the output terminal 20a located at the outer peripheral portion as in the first embodiment, and the lower electrode 16 of the other outer peripheral cell 53 is the outer peripheral portion Are connected to the output terminal 20b located at

  The pair of output terminals 20a and 20b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 41, as in the first embodiment. Thus, the solar panel 46 is configured to supply the generated electric power to a rechargeable battery (not shown) of the watch module 41.

Next, the operation of the solar panel 46 in such a pointer-type watch will be described.
Normally, hands 7 such as an hour hand 7a, a minute hand 7b, a second hand 7c, etc. move above the dial 47 by a clock movement 5 to indicate time. At this time, the first function hand 42 moves on the first scale portion 42a, the second function hand 43 moves on the second scale portion 43a, and the third function hand 44 moves on the function display portion 44a.

  At this time, external light such as sunlight is applied to the dial 47, and the applied external light is transmitted through the dial 47 and applied to the cells 50 to 57 of the solar panel 46. The irradiated external light is irradiated to each power generation layer 17 of each of the cells 50 to 57 as in the first embodiment, and the generated light is generated by each irradiated light, and the generated power is The battery is sent from the output terminals 20a and 20b of the outer peripheral cells 52 and 53 to the rechargeable battery (not shown) of the timepiece module 41 to be charged.

  Thus, when the solar panel 46 generates power, as shown in FIG. 7, in the central cell 50 among the central cell 50 and the plurality of outer peripheral cells 51 to 57, three of the hour hand 7a, the minute hand 7b, and the second hand 7c. In the state where the two hands 7 are always positioned at the upper side, in the outer peripheral cells 51 to 57, the first to third function hands 42 to 44 are positioned above the scale portions 42a and 43a and the function display portion 44a. Move in the state.

  At this time, in consideration of the fact that the pointer 7 and the first to third functional needles 42 to 44 are located above the solar panel 46 and overlapped, the light reception of the central cell 50 and the plurality of outer peripheral cells 51 to 57 is performed. The shapes and sizes of the central cell 50 and the plurality of outer peripheral cells 51 to 57 are set so that the areas are substantially the same. For this reason, even when the non-light receiving area portion 58 is provided, the light receiving areas of the central cell 50 and the plurality of outer peripheral cells 51 to 57 are substantially the same.

  As a result, as in the first embodiment, fluctuations in the light receiving areas of the central cell 50 and the plurality of outer peripheral cells 51 to 57 caused by the overlapping of the hands 7 can be minimized. For this reason, even if the non-light receiving area portion 58 is provided, the respective amounts of light received by the central cell 50 and the plurality of outer peripheral cells 51 to 57 become substantially equal. As a result, regardless of the non-light receiving area portion 58 and the movement position of the pointer 7, the output current output from the entire solar panel 46 is stably obtained at a high value, and the current output from the entire solar panel 46 is maximum Limit.

  Thus, according to the solar panel 46 of the wristwatch in the third embodiment, among the central cell 50 and the plurality of outer peripheral cells 51 to 57, the central cells 50 and the two o'clock located on the 4 o'clock side and the 6 o'clock side By providing the non-light receiving area portion 58 surrounded by the two outer peripheral cells 51, 57, an antenna (not shown) for GPS can be provided below the non-light receiving area portion 58. Radio waves can be favorably received by the antenna through the light receiving area portion 58.

  Also in this case, the solar panel 46 has a plurality of light receiving areas of the central cell 50 in consideration of a light blocking area where the pointer 7 attached to the pointer shaft 6 overlaps the central cell 50 as in the first embodiment. Since the light receiving areas of the outer peripheral cells 51 to 57 are larger than the light receiving areas of the outer peripheral cells 51 to 57, the fluctuation of the light receiving area of each of the cells 50 to 57 by the pointer 7 is minimized even if the non-light receiving area 58 is provided. Therefore, the amount of light received by each of the cells 50 to 57 can be substantially equalized to maximize the output current.

  That is, also in this solar panel 46, when the pointer 7 moves above the central cell 50 and the plurality of outer peripheral cells 51 to 57, the pointer 7 always overlaps the central cell 50, and any of the plurality of outer peripheral cells 51 to 57 Even if a part of the pointer 7 overlaps, the fluctuation of the light receiving area of the central cell 50 and the plurality of outer peripheral cells 51 to 57 caused by the overlapping of the pointer 7 can be minimized.

  For this reason, even if the non-light receiving area portion 58 is provided, it is possible to make the respective light receiving amounts of the central cell 50 and the plurality of outer peripheral cells 51 to 57 substantially equal. The output current of all the cells 50-57 can be stabilized at a high value, which can maximize the output current of all the cells 50-37.

  Also in this case, the central cell 50 has a light receiving area of the central cell 50 equal to the light receiving area of the plurality of outer peripheral cells 51 to 57 by the substantially average light blocking area of the maximum light blocking area and the minimum light blocking area Also, even if the pointer 7 always overlaps the central cell 50 and the central cell 50 is shielded from light, the amount of light received by the central cell 50 and the amount of light received by the plurality of outer peripheral cells 51 to 57 are substantially the same. It can be a value.

  Therefore, even if a part of the pointer 7 overlaps any of the plurality of outer peripheral cells 51 to 57, the fluctuation of the light receiving area of the central cell 50 and the plurality of outer peripheral cells 51 to 57 caused by the overlapping of the pointers 7 is minimized. Therefore, regardless of the movement positions of the non-light receiving area portion 58 and the pointer 7, the light reception amounts of the central cell 50 and the plurality of outer peripheral cells 51 to 57 can be made substantially equal.

  Further, in the solar panel 46, the first to third function hands 42 to 44 move their upper side, and the dial plate 47 has first and second scale parts 42a and 43a and a function display part 44a. Even if provided, the shapes and sizes of the respective cells 50 to 57 are set such that the light receiving areas of the central cell 50 and the plurality of outer peripheral cells 51 to 57 are substantially the same in consideration of the area shaded by these. By setting the central cell 50 and the central cell 50, the influence of the first to third function needles 42 to 44, the first and second scale parts 42a and 43a, and the function display part 44a is minimized. Each light reception amount of the plurality of outer peripheral cells 51 to 57 can be made substantially equal.

  In the third embodiment described above, the non-light receiving area portion 58 of the solar panel 46 is formed only by the film substrate 8, and the film substrate 8 is colored in the same color as each of the cells 50 to 57. However, the present invention is not limited to this. For example, as in the modification shown in FIG. 8, the non-light receiving area 58 is formed by the notch 59 by cutting out the non light receiving area 58 along the inner periphery thereof. It may be.

Fourth Embodiment
Next, with reference to FIG. 9, a fourth embodiment in which the present invention is applied to a pointer type wristwatch will be described. In this case, the same parts as those of the third embodiment shown in FIGS. 6 and 7 will be described with the same reference numerals.
In this pointer type wristwatch, as shown in FIG. 9, the central cell 60 and the peripheral cells 61 to 67 of the solar panel 46 are different in configuration from the third embodiment, and the other configuration is substantially the same as the third embodiment. It has become.

  That is, this central cell 60 is divided into a first central cell 68 and a second central cell 69, as shown in FIG. The first central cell 68 is formed along the periphery of the through hole 46 a provided at the central portion of the solar panel 46. The second central cell 69 is formed along the outer periphery of the first central cell 68. Also in this case, the first central cell 68, the second central cell 69, and the outer peripheral cells 61 to 67 have shapes and sizes of the respective cells 68, 69, 61 to 67 so that the amounts of light received are substantially the same. Is set.

  In this case, the first central cell 68 and the second central cell 69 have a plurality of light receiving areas of the first and second central cells 68 and 69 in consideration of the light shielding area where the pointer 7 overlaps in each area. The light receiving areas of the outer peripheral cells 61 to 67 are larger than the light receiving areas of the outer peripheral cells 61 to 67, respectively. That is, as shown in FIG. 9, the first and second central cells 68 and 69 have a substantially average light blocking area of the maximum light blocking area and the minimum light blocking area in which the pointer 7 overlaps each other. The light receiving areas of the second central cells 68 and 69 are formed larger than the light receiving areas of the plurality of outer peripheral cells 61 to 67.

  By the way, as shown in FIG. 9, an antenna (not shown) for GPS reception is arranged corresponding to the lower side of the non-light receiving area portion 58, and in order to make it easy to reach radio waves to the antenna, And the semiconductor is removed, and it is formed only of the film substrate 8 made of synthetic resin. Also in this case, the non-light receiving area portion 58 is colored in the same color as the cells 60 to 67 as in the third embodiment.

  Further, as in the third embodiment, the non-light receiving area portion 58 is formed in a substantially rectangular shape at a portion ranging from 4 o'clock to 6 o'clock of the solar panel 46. As shown in FIG. 9, the non-light receiving area 58 is also provided with a date hole 58a corresponding to the date window 45a of the dial 47.

  That is, in the non-light receiving area portion 58, a part of the upper side portion is notched from the second central cell 69 and is adjacent to the lower side of the first central cell 68, and is located at 4 o'clock side and 6 o'clock side It is provided to be adjacent to each side of the outer peripheral cells 61, 67. Thereby, the light receiving area of the whole solar panel 46 becomes the area which deducted the area of the non-light-receiving area | region part 58 from the area of the solar panel 46 whole like 3rd Embodiment.

  For this reason, as shown in FIG. 9, the first central cell 68 is formed in a shape in which the lower side portion is cut away. In addition, the second central cell 69 is formed in a shape in which the space between 3 o'clock and 7 o'clock is cut off. Furthermore, the two outer peripheral cells 61 and 67 located on the 4 o'clock side and the 6 o'clock side are formed in a shape scraped along both sides of the non-light receiving area portion 58. As described above, the first central cell 68, the second central cell 69, and the plurality of outer peripheral cells 61 to 67 are formed so that their respective amounts of received light are substantially the same, even if their shapes are different.

  That is, as shown in FIG. 9, the first central cell 68 and the second central cell 69 have the first and second average light blocking areas of the maximum light blocking area and the minimum light blocking area where the pointer 7 overlaps in that area. The light receiving areas of the central cells 68 and 69 are larger than the light receiving areas of the plurality of outer peripheral cells 61 to 67. Further, the plurality of outer peripheral cells 61 to 67 are formed such that the light receiving areas have substantially the same size, even if the shapes are different.

  In this case, as shown in FIG. 9, a through hole 69a corresponding to the rotation center of the first function needle 42 is provided at a position located on the 10 o'clock side of the second central cell 69. At a position located on the 3 o'clock side of the cell 69, a through hole 69b is provided corresponding to the rotation center of the second function needle 43. Further, a through hole 69c is provided at a position located on the 7 o'clock side of the second central cell 69, corresponding to the rotation center of the third function needle 44.

  Thus, as shown in FIG. 9, the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 of the central cell 60 are shaded by the first to third functional needles 42 to 44. And the light receiving areas have approximately the same size, even if the shapes are different in consideration of the locations where the light is being projected and the locations where the first and second scale portions 42a and 43a and the function display unit 44a cause shadows. Is formed.

  Further, in the solar panel 46 as well, as in the first embodiment, the solar panels 46 are sequentially connected in series by the plurality of connection portions 20. That is, the plurality of connection portions 20 are respectively made of conductive paste, and the lower electrodes 16 of the cells 61 to 69 adjacent to each other and the upper electrodes 18 of the other cells 61 to 69 adjacent thereto are respectively It is comprised so that it may connect electrically.

  Also in this case, the two outer peripheral cells 62 and 63 located at the final end among the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 are connected as shown in FIG. Not connected by 20. Therefore, as in the first embodiment, the upper electrode 18 of one outer peripheral cell 62 is connected to the output terminal 20a located at the outer peripheral portion, and the lower electrode 16 of the other outer peripheral cell 63 is the outer peripheral portion Are connected to the output terminal 20b located at

  The pair of output terminals 20a and 20b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 41, as in the first embodiment. Thus, the solar panel 46 is configured to supply the generated electric power to a rechargeable battery (not shown) of the watch module 41.

Next, the operation of the solar panel 46 in such a pointer-type watch will be described.
Normally, hands 7 such as an hour hand 7a, a minute hand 7b, a second hand 7c, etc. move above the dial 47 by a clock movement 5 to indicate time. At this time, the first function hand 42 moves on the first scale portion 42a, the second function hand 43 moves on the second scale portion 43a, and the third function hand 44 moves on the function display portion 44a.

  At this time, external light such as sunlight is irradiated to the dial 47, and the irradiated external light is transmitted through the dial 47 and irradiated to the cells 61 to 69 of the solar panel 46. The irradiated external light is irradiated to each power generation layer 17 of each of the cells 61 to 69 as in the first embodiment, and the generated light is generated by each irradiated light, and the generated power is The battery is sent from the output terminals 20a and 20b of the outer peripheral cells 62 and 63 to the rechargeable battery (not shown) of the timepiece module 41 to be charged.

  Thus, when the solar panel 46 generates power, as shown in FIG. 9, among the first and second central cells 68 and 69 of the central cell 60 and the plurality of outer peripheral cells 61 to 67, the first, In the second central cells 68 and 69, the hands are moved with the three hands 7 of the hour hand 7a, the minute hand 7b and the second hand 7c always positioned upward, and in the outer peripheral cells 61 to 67, the first to third functional hands 42-44 are moved in a state where they are positioned above the scale parts 42a and 43a and the function display part 44a.

  At this time, in consideration of the fact that the pointer 7 and the first to third functional needles 42 to 44 are located above and overlap the solar panel 46, the first and second central cells 68 of the central cell 60, The shapes and sizes of the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 are set such that the light receiving areas of the 69 and the plurality of outer peripheral cells 61 to 67 are substantially the same. . For this reason, even when the non-light receiving area portion 58 is provided, the light receiving areas of the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 are substantially the same.

  As a result, as in the first embodiment, fluctuations in the light receiving areas of the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 caused by the overlapping of the hands 7 can be minimized. Therefore, even if the non-light receiving area portion 58 is provided, the respective amounts of light received by all of the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 become substantially equal. As a result, regardless of the non-light receiving area portion 58 and the movement position of the pointer 7, the output current output from the entire solar panel 46 is stably obtained at a high value, and the current output from the entire solar panel 46 is maximum Limit.

  Thus, according to the solar panel 46 of the wristwatch in the fourth embodiment, the first central cell 68 in which the central cell 60 is formed along the periphery of the through hole 46 a and the outer periphery of the first central cell 68 Of the first central cell 68, the second central cell 69, and the plurality of peripheral cells 61 to 67, the central cells 60 and 4 o'clock side and the 6 o'clock side. In the same manner as in the third embodiment, a GPS antenna (not shown) is provided below the non-light receiving area 58 by providing the non-light receiving area 58 surrounded by the two outer peripheral cells 61 and 67 located in Can be provided so that radio waves can be well received by the antenna through the non-light receiving area 58.

  In this case as well, this solar panel 46 takes account of the light shielding area in which the pointer 7 attached to the pointer shaft 6 overlaps the first central cell 68 and the second central cell 69. The light receiving areas 68 and 69 are formed to be larger than the light receiving areas of the plurality of outer peripheral cells 61 to 67, so that even if the non-light receiving area portion 58 is provided, Since fluctuations in the light receiving areas can be minimized, it is possible to substantially equalize the light receiving amounts of the cells 61 to 69 and to maximize the output current.

  That is, also in the solar panel 46, when the pointer 7 moves above the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67, the first and second central cells 68 and 69 Even if the pointer 7 always overlaps, and even if a part of the pointer 7 overlaps any of the plurality of outer peripheral cells 61 to 67, the first and second central cells 68, 69 and the plurality of outer peripheries are generated by overlapping the pointer 7 The fluctuation of the light receiving area of each of the cells 61 to 67 can be minimized.

  For this reason, even if the non-light receiving area portion 58 is provided, it is possible to make the light receiving amounts of the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 substantially equal. The output current of all the cells 61 to 69 can be stabilized at a high value regardless of the position of the hand movement, thereby maximizing the output current of all the cells 61 to 69 as much as possible.

  Also in this case, the first and second central cells 68 and 69 of the central cell 60 have the first and second centers substantially equal to the average light blocking area of the maximum light blocking area and the minimum light blocking area on which the pointer 7 overlaps. Since the light receiving areas of the cells 68 and 69 are larger than the light receiving areas of the plurality of outer peripheral cells 61 to 67, the pointer 7 always overlaps the first and second central cells 68 and 69. Even when the second central cells 68 and 69 are shielded from light, the respective amounts of light received by the first and second central cells 68 and 69 and the respective amounts of light received by the plurality of outer peripheral cells 61 to 67 are approximately the same value. Can.

  Therefore, even if a part of the pointer 7 overlaps any of the plurality of outer peripheral cells 61 to 67, the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 generated by the overlapping of the pointers 7 Since variations in the light receiving areas can be minimized, the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 can be operated regardless of the non-light receiving area 58 and the moving position of the pointer 7. Each light reception amount can be made substantially equal.

  Also in the solar panel 46, the first to third function hands 42 to 44 move their upper side, and the dial plate 47 performs the first and second scale parts 42a and 43a and the function display part 44a. Even if the light receiving areas of the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 are substantially the same in consideration of the area shaded by these By setting the shapes and sizes of 61 to 69, the influence of these first to third function needles 42 to 44, the first and second scale parts 42a and 43a and the function display part 44a is minimized. The amount of light received by the first and second central cells 68 and 69 and the plurality of outer peripheral cells 61 to 67 can be made substantially equal.

Fifth Embodiment
Next, with reference to FIG. 10, a fifth embodiment in which the present invention is applied to a pointer type wristwatch will be described. Also in this case, the same parts as those of the third embodiment shown in FIGS. 6 and 7 will be described with the same reference numerals.
In this pointer type wristwatch, as shown in FIG. 10, the central cell 70 and the peripheral cells 71 to 77 of the solar panel 46 are different from those of the third embodiment, and the other configuration is substantially the same as that of the third embodiment. It has become.

  That is, the central cell 70 is divided into a first central cell 78 and a second central cell 79, as shown in FIG. The first central cell 78 is provided in a semicircular shape at the 2 o'clock side bordering the through hole 46 a which is the central portion of the solar panel 46. The second central cell 79 is provided in a semicircular shape on the 8 o'clock side with the through hole 46 a which is the central portion of the solar panel 46 as a boundary. Also in this case, the first central cell 78, the second central cell 79, and the outer peripheral cells 71 to 77 have shapes and sizes of the respective cells 78, 79, 71 to 77 so that the amounts of light received are substantially the same. Is set.

  In this case, the first central cell 78 and the second central cell 79 have a plurality of light receiving areas of the first and second central cells 78 and 79 in consideration of the light shielding area where the pointer 7 overlaps in each area. The light receiving areas of the outer peripheral cells 71 to 77 are larger than the light receiving areas of the outer peripheral cells 71 to 77. That is, as shown in FIG. 10, the first and second central cells 78 and 79 have a substantially average light shielding area of the maximum light shielding area and the minimum light shielding area in which the pointer 7 overlaps in each area. The light receiving areas of the second central cells 78 and 79 are formed larger than the light receiving areas of the plurality of outer peripheral cells 71 to 77.

  In this case, among the hands 7, for example, as shown in FIG. 10, when the minute hand 7b rotates around the hand shaft 6, the tip portion thereof is from the outer peripheral circle of the central cell 70 to any of the outer peripheral cells 71-77. A rear end portion located in the state of extending in the region and opposite to the front end portion is extended to a position approaching the outer peripheral circle of the central cell 70. As a result, the minute hand 7 b is configured to move in a state of straddling the areas of both the first and second central cells 78 and 79 in the central cell 70. Almost similarly to this, the hour hand 7a and the second hand 7c are also configured.

  By the way, as shown in FIG. 10, an antenna (not shown) for GPS reception is arranged corresponding to the lower side of the non-light receiving area portion 58, and in order to make radio waves easily reach this antenna, And the semiconductor is removed, and it is formed only of the film substrate 8 made of synthetic resin. Also in this case, the non-light receiving area portion 58 is colored in the same color as the cells 70 to 67 as in the third embodiment.

  Further, as in the third embodiment, the non-light receiving area portion 58 is formed in a substantially rectangular shape at a portion ranging from 4 o'clock to 6 o'clock of the solar panel 46. As shown in FIG. 10, the non-light receiving area portion 58 is also provided with a date hole 58a corresponding to the date window portion 45a of the dial plate 47.

  That is, in the non-light receiving area portion 58, a part of the upper side portion is cut away from the first and second central cells 78 and 79 and located on the 5 o'clock side of the first and second central cells 78 and 79. It is provided so as to be adjacent to the side portion side and to be adjacent to each side portion of two outer peripheral cells 71 and 77 located on the 4 o'clock side and the 6 o'clock side. Thereby, the light receiving area of the whole solar panel 46 becomes the area which deducted the area of the non-light-receiving area | region part 58 from the area of the solar panel 46 whole like 3rd Embodiment.

  For this reason, as shown in FIG. 10, the first and second central cells 78 and 79 are formed in a shape in which the side portions located on the respective five o'clock sides are scraped. Further, the two outer peripheral cells 71 and 77 located on the 4 o'clock side and the 6 o'clock side are formed in a shape scraped along both sides of the non-light receiving area portion 58. As described above, the first central cell 78, the second central cell 79, and the plurality of outer peripheral cells 71 to 77 are formed so that their respective amounts of received light are substantially the same, even if their shapes are different.

  That is, as shown in FIG. 10, the first central cell 78 and the second central cell 79 have the first and second average light blocking areas of the maximum light blocking area and the minimum light blocking area in which the pointer 7 overlaps in that area. The light receiving areas of the central cells 78 and 79 are larger than the light receiving areas of the plurality of outer peripheral cells 71 to 77. Further, the plurality of outer peripheral cells 71 to 77 are formed such that the light receiving areas have the same size, even if the shapes are different.

  In this case, as shown in FIG. 10, a through hole 78a is provided at a position located on the 3 o'clock side of the first central cell 78, corresponding to the rotation center of the second function needle 43. In addition, a through hole 79a is provided at a position located on the 10 o'clock side of the second central cell 79 corresponding to the rotation center of the first function needle 42, and on the 7 o'clock side of the second central cell 79. A through hole 79 b is provided at the position where the third function needle 44 rotates.

  Thereby, as shown in FIG. 10, the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 of the central cell 70 are shaded by the first to third functional needles 42 to 44. So that each light receiving area has the same size, even if the shapes are different, taking into consideration the locations where the light is projected and the locations where the shadows are caused by the first and second scale parts 42a and 43a and the function display part 44a. It is formed.

  Further, in the solar panel 46 as well, as in the first embodiment, the solar panels 46 are sequentially connected in series by the plurality of connection portions 20. That is, the plurality of connection portions 20 are respectively made of conductive paste, and the lower electrodes 16 of the cells 71 to 79 adjacent to each other and the upper electrodes 18 of the other cells 71 to 79 adjacent thereto are respectively It is comprised so that it may connect electrically.

  Also in this case, as shown in FIG. 10, the two outer peripheral cells 72 and 73 located at the final end of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 are connected as shown in FIG. Not connected by 20. For this reason, the upper electrode 18 of one outer peripheral cell 72 is connected to the output terminal 20a located at the outer peripheral portion as in the first embodiment, and the lower electrode 16 of the other outer peripheral cell 73 is the outer peripheral portion Are connected to the output terminal 20b located at

  The pair of output terminals 20a and 20b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 41, as in the first embodiment. Thus, the solar panel 46 is configured to supply the generated electric power to a rechargeable battery (not shown) of the watch module 41.

Next, the operation of the solar panel 46 in such a pointer-type watch will be described.
Normally, hands 7 such as an hour hand 7a, a minute hand 7b, a second hand 7c, etc. move above the dial 47 by a clock movement 5 to indicate time. At this time, the first function hand 42 moves on the first scale portion 42a, the second function hand 43 moves on the second scale portion 43a, and the third function hand 44 moves on the function display portion 44a.

  At this time, external light such as sunlight is applied to the dial 47, and the applied external light is transmitted through the dial 47 and applied to the cells 71 to 79 of the solar panel 46. The irradiated external light is irradiated to each power generation layer 17 of each of the cells 71 to 79 as in the first embodiment, and the generated light is generated by each irradiated light, and the generated power is The battery is sent from the output terminals 20a and 20b of the outer peripheral cells 72 and 73 to the rechargeable battery (not shown) of the timepiece module 41 to be charged.

  Thus, when the solar panel 46 generates power, as shown in FIG. 9, among the first and second central cells 78 and 79 of the central cell 70 and the plurality of outer peripheral cells 71 to 77, the first, In the second central cells 78 and 79, movement is performed with the three hands 7 of the hour hand 7a, the minute hand 7b, and the second hand 7c always positioned upward, and in the outer peripheral cells 71 to 77, first to third functional hands 42-44 are moved in a state where they are positioned above the scale parts 42a and 43a and the function display part 44a.

  At this time, the first and second central cells 78 of the central cell 70, considering that the pointer 7 and the first to third functional needles 42 to 44 are located above the solar panel 46 and overlap them. The shapes and sizes of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 are set such that the light receiving areas of the 79 and the plurality of outer peripheral cells 71 to 77 are substantially the same. . For this reason, even when the non-light receiving area portion 58 is provided, the light receiving areas of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 are substantially the same.

  As a result, as in the first embodiment, fluctuations in the light receiving areas of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 caused by the overlapping of the hands 7 can be minimized. Therefore, even if the non-light receiving area portion 58 is provided, the respective amounts of light received by all of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 become substantially equal. As a result, regardless of the non-light receiving area portion 58 and the movement position of the pointer 7, the output current output from the entire solar panel 46 is stably obtained at a high value, and the current output from the entire solar panel 46 is maximum Limit.

  Thus, according to the solar panel 46 of the wristwatch in the fifth embodiment, the central cell 70 is divided into two, the first central cell 78 and the second central cell 79, with the through hole 46a as a boundary. Of the central cell 78, the second central cell 79, and the plurality of peripheral cells 71 to 77, a central cell 70 and a non-light receiving area surrounded by two peripheral cells 71 and 77 located on the 4 o'clock side and 6 o'clock side By providing the portion 58, as in the third embodiment, an antenna (not shown) for GPS can be provided under the non-light receiving area 58, whereby the antenna through the non-light receiving area 58 can be provided. Radio waves can be well received.

  In this case as well, this solar panel 46 takes account of the light shielding area in which the pointer 7 attached to the pointer shaft 6 overlaps the first central cell 78 and the second central cell 79. The respective light receiving areas 78 and 79 are formed to be larger than the light receiving areas of the plurality of outer peripheral cells 71 to 77, whereby the non-light receiving area portion 58 is provided. Since fluctuations in the light receiving areas can be minimized, it is possible to substantially equalize the light receiving amounts of the cells 71 to 79 and to maximize the output current.

  That is, also in the solar panel 46, when the pointer 7 moves above the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77, the front end portion and the rear end portion of the pointer 7 Even if the first and second central cells 78 and 79 always overlap, and the tip of the pointer 7 overlaps any of the plurality of outer peripheral cells 71 to 77, the first and second centers generated by overlapping the pointer 7 Fluctuations in the light receiving areas of the cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 can be minimized.

  Therefore, even if the non-light receiving area portion 58 is provided, it is possible to substantially equalize the light reception amounts of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77. The output current of all the cells 71 to 79 can be stabilized at a high value regardless of the position of the hand movement, thereby maximizing the output current of all the cells 71 to 79.

  Also in this case, the first and second central cells 78 and 79 of the central cell 70 have the first and second centers substantially equal to the average light blocking area of the maximum light blocking area and the minimum light blocking area on which the pointer 7 overlaps. Since the light receiving areas of the cells 78 and 79 are larger than the light receiving areas of the plurality of outer peripheral cells 71 to 77, the pointer 7 always overlaps the first and second central cells 78 and 79. Even when the second central cells 78 and 79 are shielded from light, the light reception amounts of the first and second central cells 78 and 79 and the light reception amounts of the plurality of outer peripheral cells 71 to 77 are substantially the same value. Can.

  Therefore, even if the tip of the pointer 7 overlaps any of the plurality of outer peripheral cells 71 to 77, the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 generated by the overlap of the pointer 7 Since fluctuations in the respective light receiving areas can be minimized, the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 can be provided regardless of the non-light receiving area 58 and the moving position of the pointer 7. Each light reception amount can be made substantially equal.

  Also in the solar panel 46, the first to third function hands 42 to 44 move their upper side, and the dial plate 47 performs the first and second scale parts 42a and 43a and the function display part 44a. Even if the light receiving areas of the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 are substantially the same in consideration of the area shaded by these By setting the shapes and sizes of 71 to 79, the influence of these first to third function needles 42 to 44, the first and second scale parts 42a and 43a, and the function display part 44a is minimized. The amount of light received by the first and second central cells 78 and 79 and the plurality of outer peripheral cells 71 to 77 can be made substantially equal.

  In the fifth embodiment described above, the case where the central cell 70 is divided into the first central cell 78 and the second central cell 79 at the boundary of the through hole 46 a which is the center of the central cell 70 is described. However, the present invention is not limited to this, and the number of divisions of the central node 70 may be divided into three or more as long as the number is smaller than the number of peripheral cells.

  In the fourth and fifth embodiments described above, the non-light receiving area portion 58 of the solar panel 46 is formed only by the film substrate 8, and the film substrate 8 has the same color as each of the cells 60 to 67 and 70 to 77. However, the present invention is not limited thereto. For example, as in the modification of the third embodiment shown in FIG. 8, the non-light receiving area portion 58 is cut out along the inner periphery thereof. The non-light receiving area portion 58 may be formed by the notch portion 59.

Sixth Embodiment
Next, a sixth embodiment in which the present invention is applied to a pointer type wristwatch will be described with reference to FIGS. 11 (a) and 11 (b). Also in this case, the same parts as those of the third embodiment shown in FIGS. 6 and 7 will be described with the same reference numerals.
In this pointer type wristwatch, as shown in FIGS. 11A and 11B, the central cell 81 of the solar panel 80 and the plurality of outer peripheral cells 82 to 87 are different from those of the third embodiment. The configuration is substantially the same as that of the third embodiment except for the third embodiment.

  In this case, as shown in FIG. 11 (a), the clock module 41 moves the hands 7, the first function hand 42, the second function hand 43, and the third function hand 44 to move the clock movement 5 (FIG. And an antenna (not shown) for GPS reception. As in the third embodiment, the timepiece module 41 is configured such that the dial 47 is disposed on the top of the timepiece module 41 via the solar panel 80.

  The first function hand 42, the second function hand 43, and the third function hand 44 are configured to move the upper side of the dial 47, as in the third embodiment. The dial 47 is made of a transparent or semi-transparent film so that a time letter 48a is provided along the ring on the outer periphery thereof. Further, on the 10 o'clock side of the dial 47, the first scale portion 42a of the first function hand 42 is provided in a circular shape, and on the 3 o'clock side of the dial 47, the second function needle 43 is The second scale portion 43a is provided in a circular shape.

  Further, on the 7 o'clock side of the dial 47, as shown in FIG. 11A, a third scale portion 44a of the third function hand 44 is provided. In this case, the first scale portion 42a of the first function hand 42, the second scale portion 43a of the second function hand 43, and the third scale portion 44a of the third function hand 44 are only necessary for the dial 47 It is printed, and the printed portion slightly intercepts the external light, but is otherwise configured to transmit light.

  On the other hand, as shown in FIG. 11 (b), the solar panel 80 is formed in a substantially circular shape having substantially the same size as the dial 47. The solar panel 80 is formed with a central cell 81 circularly formed along the periphery of the through hole 80a provided in the central portion, and a light receiving area of approximately the same size on the outer periphery of the central cell 81 A plurality of outer peripheral cells 82 to 87 and a non-light receiving area portion 88 provided corresponding to an antenna (not shown) for GPS reception.

  In this case, the central cell 81 is divided into a first central cell 90 and a second central cell 91, as shown in FIG. 11 (b). The first central cell 90 is formed along the periphery of the through hole 80 a provided at the central portion of the solar panel 80. The second central cell 91 is formed along the outer periphery of the first central cell 90.

  Further, as shown in FIG. 11B, the plurality of outer peripheral cells 82 to 87 include first and second outer peripheral cells 82 and 83 which are inner peripheral cells located on the outer periphery of the central cell 81, and The third to sixth outer peripheral cells 84 to 87 which are outer peripheral cells located on the outer periphery of the first and second outer peripheral cells 82 and 83 which are peripheral cells are provided.

  Also in this case, as shown in FIG. 11B, the first central cell 90, the second central cell 91, and the first to sixth outer peripheral cells 82 to 87 have substantially the same amount of light reception. The shape and size of each of the cells 90, 91, 82 to 87 are set. In this case, in the first central cell 90 and the second central cell 91, the light receiving areas of the first and second central cells 90 and 91 are the first in consideration of the light shielding area in which the pointer 7 overlaps in each area. The light receiving areas of the first to sixth outer peripheral cells 82 to 87 are larger than the light receiving areas.

  That is, as shown in FIG. 11B, the first and second central cells 90 and 91 have substantially the average light blocking area of the maximum light blocking area and the minimum light blocking area in which the pointer 7 overlaps in each area. The light receiving areas of the first central cell 90 and the second central cell 91 are larger than the light receiving areas of the first to sixth outer peripheral cells 82 to 87, respectively.

  Further, as shown in FIG. 11B, in the first to sixth outer peripheral cells 82 to 87, the hour hand 7a of the hands 7 hardly overlaps in each area, and the minute hand 7b and the second hand 7c Since the respective tip portions selectively overlap, even if the shapes are different, the light receiving areas are formed to have substantially the same size.

  By the way, as shown in FIG. 11 (b), in the non-light receiving area portion 88, an antenna (not shown) for GPS reception is arranged corresponding to the lower side, and it is easy to reach radio waves to this antenna In addition, it is formed in the notch. Also in this case, as in the third embodiment, the non-light receiving area portion 58 is formed in a substantially rectangular shape at a portion ranging from 4 o'clock to 6 o'clock of the solar panel 80.

  That is, as shown in FIG. 11B, in the non-light receiving area portion 88, a part of the upper side portion cuts the second central cell 91 and is adjacent to the lower side of the first central cell 90, It is provided to be adjacent to the side portions of the first to third and sixth outer peripheral cells 82 to 84 located at the 6 o'clock side. Thus, the light receiving area of the entire solar panel 80 is the area obtained by subtracting the area of the non-light receiving area 88 from the area of the entire solar panel 80, as in the third embodiment.

  Therefore, as shown in FIG. 11B, the first central cell 90 is formed in a shape in which the lower side portion is cut. In addition, the second central cell 91 is formed in a shape in which the space between 3 o'clock and 7 o'clock is cut off. Further, the first to third and sixth outer peripheral cells 82 to 84, 87 located on the 4 o'clock side and the 6 o'clock side are formed in a shape scraped along both sides of the non-light receiving area 88 There is. As described above, the first central cell 90, the second central cell 91, and the first to sixth outer peripheral cells 82 to 87 are formed such that the respective amounts of light received are substantially the same even though the shapes are different. ing.

  In this case, as shown in FIG. 11B, a through hole 91a is provided at a position located on the 10 o'clock side of the second central cell 91, corresponding to the rotation center of the first function needle 42, A through hole 91 b is provided at a position located on the 3 o'clock side of the second central cell 91 corresponding to the rotation center of the second function needle 43. Further, a through hole 91 c is provided at a position located on the 7 o'clock side of the second central cell 91 in correspondence with the rotation center of the third function needle 44.

  Thereby, the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 of the central cell 81 have the first to third functions as shown in FIG. Taking into consideration the places shaded by the needles 42 to 44 and the places shaded by the first to third scale parts 42a to 44a, even if the shapes are different, the light receiving areas have approximately the same size. It is formed to be

  Further, also in this solar panel 80, as in the first embodiment, the solar panels 80 are sequentially connected in series by the plurality of connection portions 20. That is, the plurality of connection portions 20 are respectively made of conductive paste, and the lower electrodes 16 of the cells 82 to 87, 90, 91 adjacent to each other and the other cells 82 to 87, 90, 91 adjacent to the lower electrodes Each upper electrode 18 is configured to be electrically connected.

  In this case, among the plurality of connection portions 20, the connection portion 20 connecting the third to sixth outer peripheral cells 84 to 87 on the outer peripheral side, the third outer peripheral cell 84 on the outer peripheral side, and the second outer peripheral cell on the inner peripheral side As shown in FIG. 11B, the connecting portion 20 for connecting with 83 is provided in a region corresponding to the time letter 48 a of the dial 47. Further, the connection portion 20 for connecting the second outer peripheral cell 83 on the inner peripheral side and the second central cell 91 is provided in an area located in the vicinity of the through hole 91 a of the first function needle 42.

  Further, a connection portion 20 connecting the first central cell 90 and the second central cell 91 and a connection portion 20 connecting the first central cell 90 and the first outer peripheral cell 83 on the inner peripheral side are shown in FIG. As shown in Fig. 4B, the second function needle 43 is provided in a region located in the vicinity of the through hole 91b. Furthermore, the connection portion 20 for connecting the first outer peripheral cell 83 on the inner peripheral side and the sixth outer peripheral cell 87 on the outer peripheral side is provided in the region corresponding to the second scale portion 43 a of the second function needle 43 .

  Also in this case, among the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87, the third and fourth outer peripheral cells 84 and 85 on the outer peripheral side located at the final end. Are not connected by the connection unit 20 as shown in FIG. For this reason, the upper electrode 18 of the third outer peripheral cell 84 is connected to the output terminal 20a located at the outer peripheral portion as in the first embodiment, and the lower electrode 16 of the fourth outer peripheral cell 85 is the outer peripheral portion Are connected to the output terminal 20b located at

  The pair of output terminals 20a and 20b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 41, as in the first embodiment. Thus, the solar panel 80 is configured to supply the generated electric power to a rechargeable battery (not shown) of the watch module 41.

Next, the operation of the solar panel 80 in such a pointer-type watch will be described.
Normally, hands 7 such as an hour hand 7a, a minute hand 7b, a second hand 7c, etc. move above the dial 47 by a clock movement 5 to indicate time. At this time, the first function needle 42 moves on the first scale portion 42a, the second function needle 43 moves on the second scale portion 43a, and the third function needle 44 moves on the third scale portion 44a. .

  At this time, external light such as sunlight is irradiated to the dial 47, and the irradiated external light is transmitted through the dial 47 and irradiated to the cells 61 to 69 of the solar panel 46. The irradiated external light is irradiated to each power generation layer 17 of each of the cells 81 to 87 as in the first embodiment, and the generated light is generated by each irradiated light, and the generated power is The battery is sent from the output terminals 20a and 20b of the third and fourth outer peripheral cells 84 and 85 to a rechargeable battery (not shown) of the timepiece module 41 for charging.

  Thus, when the solar panel 80 generates power, as shown in FIG. 11B, the first and second central cells 90 and 91 of the central cell 81 and the first to sixth outer peripheral cells 82 to 82 are generated. Of the 87, in the first and second central cells 90 and 91, the hands are moved with the three hands 7 of the hour hand 7a, the minute hand 7b and the second hand 7c always positioned upward, and the first to sixth outer peripheral cells 82 At 〜 87, the first to third functional needles 42 to 44 move in a state where they are positioned above the first to third scale parts 42a to 44a.

  At this time, in consideration of the fact that the pointer 7 and the first to third functional needles 42 to 44 are located above the solar panel 80 and overlap, the first and second central cells 90 of the central cell 81, The shapes of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 so that the light receiving areas of 91 and the first to sixth outer peripheral cells 82 to 87 are substantially the same. And the size is set. For this reason, even when the non-light receiving area portion 88 is provided, the light receiving areas of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 are substantially the same.

  Thereby, similarly to the first embodiment, the fluctuation of the light receiving area of each of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 caused by the overlapping of the hands 7 is minimized. Be For this reason, even if the non-light receiving area portion 88 is provided, the respective amounts of light received by the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 become substantially equal. As a result, regardless of the hand-held position of the non-light receiving area 88 and the pointer 7, the output current output from the entire solar panel 80 is stably obtained at a high value, and the current output from the entire solar panel 80 is maximum Limit.

  Thus, according to the solar panel 80 of the wristwatch in the sixth embodiment, the first central cell 90 in which the central cell 81 is formed along the periphery of the through hole 46a, and the outer periphery of the first central cell 90. The first and second outer peripheral cells 82 and 83 on the inner peripheral side are divided into a second central cell 91 formed along the inner peripheral side and the plurality of outer peripheral cells 82 to 87 are located on the outer periphery of the central cell 81 The first central cell 90 and the second central cell 91 are divided into third to sixth outer peripheral cells 84 to 87 located on the outer periphery of the first and second outer peripheral cells 82 and 8 on the peripheral side. The light reception amounts of the first to sixth outer peripheral cells 82 to 87 can be substantially equalized to maximize the output current.

  In this case, the solar panel 80 has first and second central cells 90, 90 in consideration of a light shielding area in which the pointer 7 attached to the pointer shaft 6 overlaps the first central cell 90 and the second central cell 91, Since each light receiving area 91 is formed to be larger than each light receiving area of the first to sixth outer peripheral cells 82 to 87, fluctuation of each light receiving area of each cell 82 to 87, 90, 91 by the pointer 7 Since the amount of light received can be minimized, the amount of light received by each of the cells 82 to 87, 90, and 91 can be substantially equalized to maximize the output current.

  Further, in this solar panel 80, the first and second outer peripheral cells 82 and 83 on the inner peripheral side where the plurality of outer peripheral cells 82 to 87 are located on the outer periphery of the central cell 81, and the first and second inner peripheral sides The third to sixth outer peripheral cells 84 to 87 located on the outer periphery of the outer peripheral cells 82 and 8 are divided into two and the respective light receiving areas are formed to have substantially the same size. The light reception amounts of the sixth to sixth outer peripheral cells 82 to 87 can be made substantially even.

  That is, even if a part of the pointer 7 overlaps any of the first to sixth outer peripheral cells 82 to 87, the first and second central cells 90 and 91 and the first to sixth generated by the overlapping of the pointer 7 Because variations in the light receiving areas of the outer peripheral cells 82 to 87 can be minimized, the first and second central cells 90 and 91 and the first central cell 90 and 91 and the second central cells 90 and 91 can be The amount of light received by each of the first to sixth outer peripheral cells 82 to 87 can be made substantially even.

  In this case, in the solar panel 80 as well, the first to third function hands 42 to 44 move above the solar panel 80, and the dial plate 47 is provided with first to third scale parts 42a to 44a. Even if the light receiving areas of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 are substantially the same in consideration of the area shaded by these, The amount of light received by each of the first, second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 can be made substantially equal.

  That is, the solar panel 80 is shaded by the first to third function hands 42 to 44 moving the upper side of the solar panel 80 and the first to third scale portions 42 a to 44 a provided on the dial plate 47. Cells 82 to 87, 90, so that the light receiving areas of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 are substantially the same. The shape and size of 91 are set.

  Therefore, the influence of the first to third function needles 42 to 44 and the first to third graduation portions 42a to 44a can be minimized, so that the first and second central cells 90, The amount of light received by each of 91 and the first to sixth outer peripheral cells 82 to 87 can be made substantially even, and thereby the output current can be maximized.

  Furthermore, in this solar panel 80, of all the cells 82 to 87, 90, 91, first to third, sixth outer peripheral cells 82 to 84 located on the central cells 81 and 4 o'clock side and 6 o'clock side. , 87, a GPS antenna (not shown) can be provided below the non-light receiving area 88 as in the third embodiment. Thus, radio waves can be favorably received by the antenna through the non-light receiving area portion 88.

  That is, in this solar panel 80, since the number of cells of each of the cells 82 to 87, 90, and 91 can be increased compared to the third embodiment, even if the GPS antenna is mounted and the battery voltage increases, the output is obtained. A sufficient current can be secured. Further, in order to secure the sensitivity of the antenna, the light receivable area of the entire solar panel 80 is narrowed by about 1⁄4 by the non-light reception area portion 88. For this reason, the influence of the shadow of the pointer 7 on the power generation amount is extremely large, and in the case of a watch with a thick pointer 7 in particular, the power generation amount can be improved by about 1.6 times.

  In the sixth embodiment described above, the non-light receiving area portion 88 of the solar panel 80 is formed as a notch, but the film substrate is formed of only a film substrate and is the same as the cells 82 to 87, 90, and 91. It may be a configuration colored in color.

Seventh Embodiment
Next, a seventh embodiment in which the present invention is applied to a pointer type wristwatch will be described with reference to FIGS. 12 (a) and 12 (b). In this case, the same parts as those of the sixth embodiment shown in FIGS. 11A and 11B will be described with the same reference numerals.
As shown in FIGS. 12 (a) and 12 (b), this pointer type wristwatch has a parting portion 95 on the dial plate 47, and according to this parting portion 95, the central cell 81 of the solar panel 94 is provided. The configurations of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 are different from each other, and the other configuration is substantially the same as that of the sixth embodiment.

  In this case, as shown in FIG. 12A, the parting portion 95 is provided on the outer periphery of the first dividing portion 95a provided on the outer periphery of the dial 47 and on the outer periphery of the first scale portion 42a of the first function hand 42. A second parting part 95b, a third parting part 95c provided on the outer periphery of the second scale part 43a of the second function needle 43, and a third part provided on the outer periphery of the third scale part 44a of the third function needle 44 4 parting part 95d and.

  These first to fourth parting portions 95a to 95d are layers having a light transmittance lower than that of the dial plate 47, such as a metal plating layer, a metal deposition layer, or a printing layer. Therefore, as shown in FIG. 12B, the first and second central cells 90 and 91 of the central cell 81 and the first to sixth outer peripheral cells 82 to 87 in the solar panel 94 have their boundaries. Is formed in a shape corresponding to the first to fourth parting portions 95a to 95d.

  That is, the third to sixth outer peripheral cells 84 to 87 on the outer peripheral side corresponding to the first parting portion 95a located on the outer periphery of the dial 47 are considered to be shielded by the first parting portion 95a. Each area is formed wider than the area of the first and second outer peripheral cells 82 and 83 on the inner peripheral side. Thus, the light receiving areas of the third to sixth outer peripheral cells 84 to 87 on the outer peripheral side are formed to be substantially the same as the light receiving areas of the first and second outer peripheral cells 82 and 83 on the inner peripheral side. ing.

  Further, the second central cell 91 on the outer peripheral side of the central cell 81 corresponding to the second parting portion 95b provided on the outer periphery of the first scale portion 42a of the first functional needle 42 is shielded by the second parting portion 95b In consideration of the above, the portion corresponding to the second parting portion 95b is formed in a shape which is bitten into the first central cell 90 on the inner peripheral side and is expanded. Thus, the light receiving area of the second central cell 91 on the outer peripheral side is formed to be substantially the same as the light receiving area of the first central cell 90 on the inner peripheral side.

  Further, the first outer peripheral cell 82 on the inner peripheral side to which the third parting part 95c provided on the outer periphery of the second scale part 43a of the second function needle 43 corresponds is considered to be shielded by the third parting part 95c Then, a portion corresponding to the third parting portion 95c is formed in a shape of being bitten into the sixth outer peripheral cell 87 on the outer peripheral side and expanding. Thus, the light receiving area of the first outer peripheral cell 82 on the inner peripheral side is formed to be substantially the same as the light receiving area of the sixth outer peripheral cell 87 on the outer peripheral side.

  Furthermore, it is considered that the second outer peripheral cell 83 on the inner peripheral side to which the fourth parting part 95d provided on the outer periphery of the third scale part 44a of the third function needle 44 corresponds is shielded by the fourth parting part 95d A portion corresponding to the fourth parting portion 95d is formed in a shape which is bitten into the third outer peripheral cell 84 on the outer peripheral side and is expanded. Thus, the light receiving area of the second outer peripheral cell 83 on the inner peripheral side is formed to be substantially the same as the light receiving area of the third outer peripheral cell 84 on the outer peripheral side.

  Similarly, it is considered that the second central cell 91 on the outer peripheral side to which the fourth parting part 95d provided on the outer periphery of the third scale part 44a of the third function needle 44 corresponds is shielded by the fourth parting part 95d A portion corresponding to the fourth parting portion 95d is formed in a shape which is bitten into the first central cell 90 on the inner peripheral side and is expanded. Thus, the light receiving area of the second central cell 91 on the outer peripheral side is formed to be substantially the same as the light receiving area of the first central cell 90 on the inner peripheral side.

  Also in this solar panel 94, as in the sixth embodiment, the solar panels 94 are sequentially connected in series by a plurality of connection portions 96. That is, the plurality of connection portions 96 are each made of a conductive paste, and the lower electrodes 16 of the cells 82 to 87, 90, 91 adjacent to each other, and the other cells 82 to 87, 90, 91 adjacent thereto. Each upper electrode 18 is configured to be electrically connected.

  In this case, the plurality of connection portions 96 are provided corresponding to the parting portion 95 as shown in FIG. That is, connecting portions 96 connecting the fourth to sixth outer peripheral cells 85 to 87 on the outer peripheral side are provided corresponding to the lower part of the first parting portion 95 a located on the outer periphery of the dial 47. Further, the connecting portion 96 connecting the sixth outer peripheral cell 87 on the outer peripheral side and the first outer peripheral cell 82 on the inner peripheral side is a third parting portion 95 c located on the outer periphery of the second scale portion 43 a of the second function needle 43. It is provided corresponding to the bottom of.

  In addition, a connection portion 96 connecting the third outer peripheral cell 84 on the outer peripheral side and the second outer peripheral cell 83 on the inner peripheral side, and connecting the second outer peripheral cell 83 on the inner peripheral side and the second central cell 91 on the outer peripheral side The connection portion 96 is provided corresponding to the lower part of the fourth parting portion 95 d located on the outer periphery of the third scale portion 44 a of the third function needle 44. The connecting portion 96 connecting the first central cell 90 on the inner circumferential side and the first outer circumferential cell 82 on the inner circumferential side is the lower side of the second scale portion 43 a of the second function needle 43 and its through hole It is provided in the vicinity of 91b.

  Also in this case, the third and fourth outer peripheral cells 84 and 85 located at the final end of the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 are shown in FIG. As shown in FIG. 12 (b), they are not connected by the connection 96. For this reason, the upper electrode 18 of the third outer peripheral cell 84 is connected to the output terminal 96a located at the outer peripheral portion thereof as in the first embodiment, and the lower electrode 16 of the fourth outer peripheral cell 85 is It is connected to the output terminal 96b located in.

  The pair of output terminals 96a and 96b are configured to be connected to a pair of input electrodes (not shown) of the timepiece module 41, as in the first embodiment. Thus, the solar panel 94 is configured to supply the generated power to a rechargeable battery (not shown) of the watch module 41.

  According to such a solar panel 94 of the seventh embodiment, in addition to the same function and effect as the sixth embodiment, by providing the parting portion 95 on the surface side of the solar panel 94, the decorativeness is excellent. And can be provided in terms of design. Further, connection portions 96 connecting the first and second central cells 90 and 91 of the central cell 81 and the first to sixth outer peripheral cells 82 to 87 in series are provided corresponding to the parting portion 95. Thus, each connection 96 can be hidden from the outside, and a decrease in light receiving area due to each connection 96 can be prevented.

  That is, the parting part 95 has a first parting part 95a provided on the outer periphery of the dial 47, a second parting part 95b provided on the outer periphery of the first scale part 42a of the first function hand 42, and a second function. Since the third parting part 95c provided on the outer periphery of the second scale part 43a of the needle 43 and the fourth parting part 95d provided on the outer periphery of the third scale part 44a of the third function needle 44 are provided. Can be provided with excellent decorativeness and design preference.

  In this case, the first and second central cells 90 and 91 and the first to sixth outer peripheral cells 82 to 87 of the central cell 81 are formed in a shape corresponding to the parting portion 96. The light receiving areas of the cells 82 to 87, 90, and 91 can be made substantially the same in consideration of the light blocking areas of the cells 82 to 87, 90, and 91 overlapping the parting portion 96. That is, by setting the shape and size of each of the cells 82 to 87, 90, 91, the amount of light received by each of the first and second central cells 90, 91 and the first to sixth outer peripheral cells 82 to 87 can be determined. It can be almost even.

  In the seventh embodiment described above, the non-light receiving area 88 of the solar panel 94 is formed as a notch, but the film substrate is formed of only a film substrate and is the same as the cells 82 to 87, 90, and 91. It may be a configuration colored in color.

  In the first to seventh embodiments described above and their modifications, the outer peripheral cells 11 to 15, 28 to 32, and 51 to 57 are provided on the outer periphery of the central cells 10, 27, 50, 60, 70, and 81. , 61 to 67, 71 to 77, and 82 to 87 are radially formed, but the present invention is not limited thereto. For example, a plurality of outer peripheral cells 11 to 15, 28 to 32, 51 to 57, 61 to 67 , 71 to 77 and 82 to 87 may be formed in a spiral or may be formed concentrically (in a ring).

  In the first to seventh embodiments described above and their modifications, outer peripheral cells 11-15, 28-32, 51-57, 61 are provided on the outer periphery of central cells 10, 27, 50, 60, 70, 81. Although the case where ~ 67, 71 to 77, 82 to 87 are divided into five or six is described, the outer peripheral cells do not necessarily have to be divided into five or six, and may be seven or more. It may be divided and provided.

  Moreover, in each embodiment and its modification of 3rd-7th embodiment mentioned above, although the non-light-receiving area | region parts 58 and 88 or the notch part 59 were provided, as it exists in 1st Embodiment, The outer shape may be circular, and the central cell and the plurality of outer peripheral cells may be disposed on the whole.

  Furthermore, although each of the first to seventh embodiments and the modifications thereof described above is applied to a pointer-type watch, it does not have to be a watch. For example, a travel watch, an alarm clock, a clock, a clock The invention can be applied to various pointer-type watches such as, and can be widely applied to instruments such as pointer-type meters.

As mentioned above, although some embodiments of this invention were described, this invention is not limited to these, The invention described in the claim, and the range of equivalence are included.
The invention described in the claims of the present application is appended below.

(Supplementary note)
The invention according to claim 1 is that the pointer shaft is inserted into the through hole provided in the central portion, and the pointer attached to the pointer shaft is formed around the through hole in the solar panel which is moved upward. A central cell and a plurality of outer peripheral cells respectively formed on the outer periphery of the central cell with substantially the same light receiving area, and the light receiving area of the central cell in consideration of a light blocking area where the pointer overlaps the central cell Is a solar panel characterized in that it is formed larger than the light receiving areas of the plurality of outer peripheral cells.

  The invention according to claim 2 is the solar panel according to claim 1, wherein the light blocking area where the pointer overlaps the central cell is a substantially average light blocking area of the maximum light blocking area and the minimum light blocking area by the pointer. It is a solar panel characterized by

  The invention according to claim 3 is the solar panel according to claim 1 or 2, wherein a non-light receiving area surrounded by at least one or more of the central cell and the plurality of peripheral cells is provided. It is a solar panel characterized by being.

  The invention according to claim 4 is the solar panel according to any one of claims 1 to 3, wherein the central cell is a first central cell formed along the periphery of the through hole; A second central cell formed along an outer periphery of the one central cell.

  The invention according to claim 5 is the solar panel according to any one of claims 1 to 3, wherein the number of central cells is smaller than that of the plurality of peripheral cells, and the central portion of the solar panel is bordered. The solar panel is characterized in that it is divided into a plurality of.

  The invention according to claim 6 is the solar panel according to any one of claims 1 to 5, wherein the plurality of outer peripheral cells are a plurality of outer peripheral cells located on the outer periphery of the central cell. It is a solar panel characterized by having a plurality of outer peripheral cells located on the outer periphery of the plurality of outer peripheral cells located on the inner peripheral side.

  The invention according to claim 7 is the solar panel according to any one of claims 1 to 6, wherein the central cell and the plurality of outer peripheral cells are connected in series by each connection portion. It is a solar panel to feature.

  The invention according to claim 8 is the solar panel according to any one of claims 1 to 7, wherein a parting portion is provided on the surface side of the solar panel, and the central cell and the plurality of outer peripheries are provided. Each said connection part which connects a cell is a solar panel characterized by being provided corresponding to the said parting part.

  The invention according to claim 9 is the solar panel according to claim 8, wherein each boundary of the central cell and the plurality of outer peripheral cells is formed in a shape corresponding to the parting portion. It is a panel.

  The invention according to claim 10 is a watch comprising the solar panel according to any one of claims 1 to 9.

1, 41 clock modules 3, 25, 46, 80, 94 solar panels 3a, 25a, 46a through holes 4, 47 dials 5, 41 clock movement 6 pointer shaft 7 pointer 10, 27, 50, 60, 70, 81 central Cell 11-15, 28-32, 51-57, 61-67, 71-77 Outer peripheral cell 16 Lower electrode 17 Power generation layer 18 Upper electrode 19 Protective film 20, 96 Connection part 26 Display window part 33 Display panel 40 Watch case 58 Non-light receiving area 68, 78, 90 first central cell 69, 79, 91 second central cell 82 to 87 first to sixth outer peripheral cells 95

Claims (10)

In a solar panel in which a pointer shaft is inserted into a through hole provided at the center and the pointer attached to the pointer shaft moves upward,
A central cell formed around the through hole, and a peripheral cell around the central cell,
The pointer Ri is Do heavy to the central cell and the peripheral cells,
A solar panel characterized in that the pointer overlaps the central cell during movement . The solar panel according to claim 1, wherein the central cell is formed larger than the outer peripheral cell .   The solar panel according to claim 1 or 2, wherein the outer peripheral cell comprises a plurality of outer peripheral cells, and a non-light receiving area surrounded by at least one or more of the central cell and the plurality of outer peripheral cells. Solar panels characterized by the fact that   The solar panel according to any one of claims 1 to 3, wherein the central cell is formed along a first central cell formed along the periphery of the through hole and an outer periphery of the first central cell. And a second central cell.   The solar panel according to any one of claims 1 to 3, wherein the outer peripheral cell comprises a plurality of outer peripheral cells, and the central cell is smaller in number than the plurality of outer peripheral cells, in a central portion of the solar panel A solar panel characterized by being divided into a plurality of boundaries.   The solar panel according to any one of claims 1 to 5, wherein the outer peripheral cell comprises a plurality of outer peripheral cells, and the plurality of outer peripheral cells are a plurality of outer peripheral outer peripheral side located on the outer periphery of the central cell. What is claimed is: 1. A solar panel comprising a cell and a plurality of outer peripheral cells located on the outer periphery of the plurality of outer peripheral cells on the inner peripheral side.   The solar panel according to any one of claims 1 to 6, wherein the outer peripheral cell includes a plurality of outer peripheral cells, and the central cell and the plurality of outer peripheral cells are connected in series by each connection portion. Solar panels characterized by The solar panel according to any one of claims 1 to 7, wherein the outer peripheral cell comprises a plurality of outer peripheral cells, and a parting portion is provided on the surface side of the solar panel, the central cell and the plurality solar panels the connection parts that connect the angular cell in series, characterized in that provided in correspondence with the parting portion.   The solar panel according to claim 8, wherein each boundary of the central cell and the plurality of outer peripheral cells is formed in a shape corresponding to the parting portion.   A timepiece comprising the solar panel according to any one of claims 1 to 9.

Images