JP2015175805A - Electronics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment which is excellent in designability, and is capable of avoiding the deterioration of the antenna characteristics of a circular polarization antenna which receives a GPS radio wave while suppressing the deterioration of a power generation amount due to a solar panel as much as possible.SOLUTION: Electronic equipment includes: a dial plate 1; a module 3 arranged below the dial plate 1, which includes a circular polarization antenna 4 having a feeding point 43 and a radiation electrode 42; and a solar panel 5 arranged between the dial plate 1 and the module 3, which has an area corresponding to the surface directional area of the dial plate 1. The solar panel 5 is configured of a plurality of solar cells 50, and characterized such that the solar cells 50 each having a light reception surface arranged at a position corresponding to the radiation electrode 42 are included.

Description

  The present invention relates to an electronic device, and more particularly to an electronic device that receives GPS radio waves and corrects the time.

2. Description of the Related Art Conventionally, a clock using a GPS (Global Positioning System) (hereinafter referred to as “GPS clock”) has been developed as an electronic device capable of correcting the time to an accurate time anywhere in the world (for example, a patent document). 1).
A GPS clock transmits a radio wave (hereinafter referred to as “GPS radio wave”) on which an artificial satellite (GPS satellite) orbiting over an orbit over the earth superimposes time information and orbit information (hereinafter referred to as “GPS radio wave”). Is a watch that corrects the time by using the GPS that receives this signal and measures the position of itself and acquires the accurate time information superimposed on the GPS radio wave.
The GPS radio wave is a circularly polarized microwave, and the patch antenna is small and the reception performance is most suitable as an antenna for receiving it.

In addition, electronic devices including solar panels that receive light and generate electricity are widely known. Such an electronic device can be used for a long period of time without replacing the battery by generating power with a solar panel and charging the secondary battery.
For example, if a GPS watch is equipped with a solar panel, time adjustment and battery replacement are unnecessary, and a user-friendly and convenient watch can be realized.

However, the solar panel is provided with a metal electrode, a semiconductor layer, and a transparent electrode formed of a conductive material such as an aluminum conductor. For this reason, when a solar panel is disposed above the antenna, the antenna characteristics (the antenna radio wave reception performance) are significantly deteriorated due to the influence of the conductive material.
For this reason, for example, Patent Document 1 proposes a configuration in which a notch is provided in a portion corresponding to an antenna in a solar panel so that the solar panel is not disposed above the antenna and the antenna characteristics of the antenna are suppressed from being deteriorated. ing.

JP 2010-96707 A

However, as in the configuration described in Patent Document 1, if the solar panel is cut out at a portion corresponding to the antenna, there is a problem that the light receiving area of the solar panel is reduced correspondingly and the power generation amount is reduced. .
In addition, when the solar panel is cut out, there is a problem that the cutout portion can be easily seen through from the dial side and the design is impaired.

  The present invention has been made in view of the circumstances as described above, and it is possible to avoid deterioration of antenna characteristics of a circularly polarized antenna that receives GPS radio waves while suppressing a decrease in power generation amount by a solar panel as much as possible. An object of the present invention is to provide an electronic device with excellent design.

In order to solve the above-described problems, an electronic device according to the present invention includes:
Dial and
A module including a circularly polarized antenna disposed under the dial and having a feeding point and a radiation electrode;
A solar panel disposed between the dial and the module, and having an area corresponding to an area in a surface direction of the dial;
With
The solar panel is composed of a plurality of solar cells, and includes a solar cell having a light receiving surface arranged at a position corresponding to the radiation electrode.

  According to the present invention, it is possible to avoid deterioration of antenna characteristics of a circularly polarized antenna that receives GPS radio waves while suppressing a decrease in the amount of power generated by a solar panel as much as possible.

It is a disassembled perspective view of the timepiece in the first embodiment. It is a top view of the solar panel in a 1st embodiment. It is sectional drawing of the solar panel which follows the III-III line in FIG. It is a top view of the solar panel in 2nd Embodiment. It is a top view which shows the modification of the solar panel shown in FIG. It is a top view of the solar panel in 3rd Embodiment. It is a top view which shows the modification of the solar panel shown in FIG. It is a top view of the solar panel in 4th Embodiment. It is sectional drawing of the solar panel which follows the IX-IX line in FIG. It is a top view of the solar panel in 5th Embodiment. It is a top view which shows the modification of the solar panel shown in FIG.

[First Embodiment]
A first embodiment of an electronic apparatus according to the present invention will be described with reference to FIGS. 1 to 3.
The embodiments described below are given various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

In the present embodiment, a case will be described in which the electronic device is an analog timepiece that displays the time and the like by moving the hands.
FIG. 1 is an exploded perspective view of a timepiece according to the present embodiment.
As shown in FIG. 1, the timepiece 100 according to this embodiment includes a dial 1, a module 3 including a circularly polarized antenna 4, and a solar panel 5.
In addition, the timepiece 100 includes a secondary battery (not shown) that is charged with power generated by the solar panel 5 and constitutes a power supply unit of the timepiece 100.
The dial 1, the module 3, the circularly polarized antenna 4, the solar panel 5, and the secondary battery are accommodated in a case (not shown). The case is made of a metal material such as SUS or titanium. In addition, the material which forms a case is not limited to what was illustrated here. For example, you may form with materials other than metals, such as resin.

In the present embodiment, the dial plate 1 is an analog dial plate that is arranged on the viewing side of the timepiece 100 and displays the time by the hands 2 such as the hour hand and the minute hand.
A through-hole 11 through which a pointer shaft 31 to which the pointer 2 is attached is inserted is formed at a substantially central portion of the dial 1.
The timepiece 100 of this embodiment includes a circularly polarized antenna 4 that receives GPS radio waves, which are microwaves, as will be described later. For this reason, the dial 1 is preferably formed of a non-metallic material that transmits microwaves, and is formed of, for example, resin or glass.
The timepiece 100 also includes a solar panel 5 that receives light and generates power. For this reason, the dial 1 is formed of a transparent or translucent light-transmitting material.
Note that the dial 1 is formed by depositing a metal film having a thickness that does not attenuate the microwave and does not hinder the transmission of light on the surface of a substrate formed of, for example, a transparent or translucent resin or glass. It may have been subjected to various printing.

The module 3 is disposed below the dial 1 (that is, on the back surface side of the timepiece 100) and connected to a timepiece movement including a wheel train mechanism and a motor for moving the hands 2, for example, to the circularly polarized antenna 4. The communication module, a circuit board (not shown) on which various electronic components such as a control circuit for performing time display by the hands 2 are mounted (not shown) are housed in a housing (not shown) formed of resin or the like. It is a thing.
The control circuit provided in the timepiece 100 of this embodiment has a function of correcting the time in the timepiece 100 to an accurate time using time information included in the GPS radio wave.

In the present embodiment, a pointer shaft 31 that protrudes upward from the movement side is provided at a substantially central portion of the module 3.
The pointer shaft 31 is inserted through a through-hole 51 of the solar panel 5 and a through-hole 11 of the dial 1 described later and protrudes above the dial 1.
The pointer shaft 31 has a plurality of rotating shafts such as an hour hand, a minute hand, and a second hand arranged on the same shaft, and the pointer 2 (for example, hour hand, minute hand, second hand) rotates each time the pointer shaft 31 rotates. Each axis is connected.
When the pointer shaft 31 is rotated by the movement of the movement, the various pointers 2 attached to the rotary shafts of the pointer shaft 31 are individually rotated on the upper surface of the dial 1 around the axis of the pointer shaft 31. .
The number of hands 2 attached to the needle shaft 31 and moved around the needle shaft 31 is not limited to the illustrated example. For example, the number of hands 2 may be only one, or a function hand for displaying various functions may be provided as the hands 2 in addition to the hour hand, the minute hand, and the second hand.

Further, an antenna fitting portion 32 into which the circularly polarized antenna 4 is fitted is formed at one end portion along the outer periphery of the module 3.
The antenna fitting portion 32 is a cutout portion or a recess portion having a shape along the outer shape of the circularly polarized antenna 4.
In the state where the circularly polarized antenna 4 is fitted in the antenna fitting portion 32, it is preferable that the upper surface of the module 3 and the upper surface of the circularly polarized antenna 4 are substantially flush with each other.

The circularly polarized antenna 4 is capable of receiving GPS radio waves (that is, radio waves including time information transmitted from GPS satellites) that are circularly polarized microwaves. For example, a patch antenna is preferably used.
GPS radio waves include time information from high-precision atomic clocks mounted on each GPS satellite, an ephemeris (ie, orbit information) with approximate accuracy of all satellites updated about every 6 days, and about every 90 minutes. Data including the ephemeris of the satellite itself to be updated is included, and each GPS satellite transmits these information by radio waves (microwaves) having a frequency of L1 (1575.42 MHz) or L2 (1222.70 MHz). Sending to the ground.
The timepiece 100 receives GPS radio waves from at least one of a plurality of GPS satellites by the circularly polarized antenna 4, and uses the time information included therein to accurately set the time in the timepiece 100. Can be corrected.
The GPS radio wave also includes orbit information indicating the position of each GPS satellite in the orbit as described above. Therefore, the watch 100 can receive GPS radio waves transmitted from a plurality of GPS satellites by the circularly polarized antenna 4 and perform positioning calculation using time information and orbit information included therein. is there.

As shown in FIG. 1, the circularly polarized antenna 4 of the present embodiment includes a base 41 and a radiation electrode 42 (radiation element) disposed on the base 41 and formed in a rectangular shape in plan view. Yes. The shape of the circularly polarized antenna 4 is not limited to the illustrated example.
The base 41 is made of a dielectric material such as ceramic.
The radiation electrode 42 is made of, for example, a silver foil, a metal plate, or a metal film having a predetermined thickness.
The size of the radiation electrode 42 (the length of each side, etc.) is optimized based on the frequency of the radio wave to be received by the circularly polarized antenna 4. In this embodiment, the frequency band of the GPS radio wave is used. Is adjusted to show the highest antenna characteristics.
A feeding point 43 for feeding power to the radiation electrode 42 is provided at a position having circular polarization characteristics in the circularly polarized antenna 4, that is, a position where impedance matching can be achieved.
The method for supplying power to the radiation electrode 42 is not particularly limited.
In addition, a through-hole (not shown) through which a feed member (not shown) that feeds the radiation electrode 42 (for example, a feed pin or a coaxial cable) is inserted at a position corresponding to the feed point 43 is penetrated in the thickness direction of the circularly polarized antenna 4. May be formed.

As described above, the circularly polarized antenna 4 of the present embodiment is fitted to the antenna fitting portion 32 provided in the module 3.
In the state of being fitted to the antenna fitting portion 32, the circularly polarized antenna 4 is disposed at a position avoiding the pointer shaft 31 (see FIG. 2). Note that the position where the circularly polarized antenna 4 is provided and the direction in which the circularly polarized antenna 4 is arranged are not limited to the illustrated example.

In the circularly polarized antenna 4, the radiation pattern spreads from the end portion (peripheral portion) of the radiation electrode 42.
In the present embodiment, the radiation electrode 42 is formed in a substantially square shape, and the radiation pattern spreading from each side (peripheral portion) greatly affects the antenna characteristics (the radio wave reception performance of the antenna) of the circularly polarized antenna 4.
For this reason, in order to improve the antenna characteristics of the circularly polarized antenna 4, it is important not to inhibit the spread of the radiation pattern from each side of the radiation electrode 42.

The solar panel 5 receives light and generates electric power, and the electric power generated by the solar panel 5 is charged in the secondary battery.
The solar panel 5 of the present embodiment is disposed between the dial 1 and the module 3 and has an area corresponding to the area in the surface direction of the dial 1.
The dial plate 1 of the present embodiment is formed of a light transmissive material as described above, and the solar panel 5 receives light by making the area of the solar panel 5 correspond to the area of the dial plate 1 in the surface direction. The area can be secured as wide as possible.
In addition, the shape etc. of the solar panel 5 are not specifically limited. The solar panel 5 has an area substantially corresponding to the area in the surface direction of the dial 1 and may be any one that substantially overlaps the dial 1, and the area and shape thereof coincide with the area and shape of the dial 1. It does not have to be.

FIG. 2 is a plan view of the solar panel 5 in the present embodiment, and FIG. 3 is a cross-sectional view of the solar panel 5 taken along line III-III in FIG.
As shown in FIGS. 1 and 2, a through-hole 51 through which the pointer shaft 31 is inserted is provided in a substantially central portion of the solar panel 5.
In the present embodiment, the solar panel 5 includes a plurality of solar cells 50 (seven solar cells 50 a to 50 g in the present embodiment), and receives light that is disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4. A solar cell 50 having a surface (in this embodiment, a solar cell 50d) is included.

Here, the “light receiving surface” refers to a surface in the solar cell 50 that can receive and generate power.
Further, the “position corresponding to the radiation electrode 42” is a position above the radiation electrode 42 and a position substantially overlapping with the radiation electrode 42.
As described above, since the radiation pattern of the circularly polarized antenna 4 spreads from the end portion (peripheral portion) of the radiation electrode 42, when the end portion of the radiation electrode 42 is covered with a member that inhibits transmission of radio waves, The antenna characteristics (radio wave reception performance) of the circularly polarized antenna 4 deteriorate.
For this reason, in the present embodiment, the solar cell 50d disposed above the radiation electrode 42 is formed so that its light receiving surface overlaps with the radiation electrode 42 or is smaller than the solar cell 50d. The end of the radiation electrode 42 is not covered by the solar cell 50d so as not to be disposed so as to protrude outward from the end.
For example, when the radiation electrode 42 of the circularly polarized antenna 4 is a 11.5 mm square, if the light-receiving surface of the solar cell 50d is set to be about 1 mm inside each side of the radiation electrode 42, the circular polarization is reduced. Degradation of the antenna characteristics of the wave antenna 4 can be avoided.
The light receiving surface of the solar cell 50d disposed at a position corresponding to the radiation electrode 42 is preferably sized to be located inside the end of the radiation electrode 42, but the solar cell 50d and the radiation electrode 42 Depending on the distance from the upper surface, the light receiving surface does not completely cover the end of the radiating electrode 42 even if it is of a size that substantially overlaps the radiating electrode 42, and the antenna characteristics of the circularly polarized antenna 4 are maintained. The

  As shown in FIG. 3, the solar panel 5 is a laminate in which a metal electrode 54 is formed on a resin substrate 53, and a semiconductor layer 55, a transparent electrode 56, and a protective layer (protective film) 58 are further laminated thereon. It has a structure. An insulating layer 59 is disposed on the side surface of the laminated structure.

The resin substrate 53 is a flexible film-like substrate. Although the material which forms the resin substrate 53 is not specifically limited, For example, it forms with a plastics etc.
The metal electrode 54 is formed including a metal material such as an aluminum conductor, for example. The material for forming the metal electrode 54 is not limited to this.
The semiconductor layer 55 is made of, for example, amorphous silicon (a-Si: H). As the semiconductor layer 55, for example, a pn junction type semiconductor in which a p-type semiconductor and an n-type semiconductor are joined is used.
The metal electrode 54 and the semiconductor layer 55 are laminated and formed on the resin substrate 53 by a technique such as vapor deposition, for example. The method of providing the metal electrode 54 and the semiconductor layer 55 on the resin substrate 53 is not limited to this.
The transparent electrode 56 is formed by crystallizing zinc oxide, indium oxide, tin oxide or the like on a substrate such as glass. In addition, the material and formation method which form the transparent electrode 56 are not limited to this.

Moreover, in this embodiment, the process which removes the metal electrode 54, the semiconductor layer 55, and the transparent electrode 56 around the solar cell 50d which has the light-receiving surface arrange | positioned in the position corresponding to the radiation electrode 42 among the solar panels 5 is carried out. The electrode removal part 57 is formed around the solar cell 50d.
The method for removing the metal electrode 54, the semiconductor layer 55, and the transparent electrode 56 is not particularly limited, and for example, a laser processing or the like is used.
The electrode removal unit 57 of the present embodiment follows the outer shape of the radiation electrode 42 and is also the radiation electrode 42.
A width of about 1 mm inside the end portion and about 2 mm outside the end portion is provided across a position corresponding to the end portion (that is, each side defining the outer shape of the radiation electrode 42).
Note that the width, shape, and the like of the electrode removal portion 57 are not limited to those exemplified here, and are set as appropriate.
From the viewpoint of maintaining the antenna characteristics of the circularly polarized antenna 4, it is preferable that the electrode removal unit 57 be provided in the entire range that affects the spread of the radiation pattern from the end of the radiation electrode 42. If it is formed too wide, the light receiving area of the solar panel 5 is reduced and power generation efficiency is impaired. For this reason, it is preferable that the electrode removal part 57 is provided in the minimum width | variety in the range which does not impair the antenna characteristic of the circularly polarized wave antenna 4. FIG.

In the present embodiment, the seven solar cells 50a to 50g are formed in substantially the same area so that the respective output currents are substantially equal.
The solar cells 50a to 50g (light receiving surfaces of the solar cells 50a to 50g) are connected in series and function as one solar panel.
Specifically, the solar cell 50a is electrically connected to the adjacent solar cell 50b at the connection portion 52a, and the solar cell 50b is electrically connected to the adjacent solar cell 50c at the connection portion 52b. The solar cell 50e is electrically connected to the adjacent solar cell 50f at the connection portion 52e, and the solar cell 50f is electrically connected to the adjacent solar cell 50g at the connection portion 52f.
The solar cell 50d having a light receiving surface arranged at a position corresponding to the radiation electrode 42 is electrically connected to the solar cell 50c at the connection portion 52c, and is electrically connected to the adjacent solar cell 50e at the connection portion 52d. Has been.
For example, the connection part 52g on the solar cell 50a side and the connection part 52g on the solar cell 50g side are independent, and connectors (connection members) (not shown) are connected to the connection parts 52g and 52g, respectively. And this solar panel 5 is electrically connected with a circuit board by each connecting this connector to + electrode and-electrode on a circuit board which is not illustrated. In addition, the connection part connected with a circuit board is not limited to the connection parts 52g and 52g, Any one of the connection parts should just have such a structure.
The positions and shapes of the connection parts 52a to 52g are not limited to the illustrated examples.

In addition, since the connection parts 52c and 52d which connect the light-receiving surface of the solar cell 50d and the light-receiving surface of the other solar cells 50c and 50e contain a metal material, the connection parts 52c and 52d straddle the edge part of the radiation electrode 42. If this is arranged, the antenna characteristics of the circularly polarized antenna 4 are affected accordingly.
For this reason, it is preferable to reduce the area of the connection parts 52c and 52d as much as possible so as to minimize the influence on the antenna characteristics of the circularly polarized antenna 4.

Further, it is preferable that the connection position for connecting the solar cell 50 d having the light receiving surface disposed at a position corresponding to the radiation electrode 42 and the other solar cells 50 c and 50 e is as far as possible from the feeding point 43.
When the case for housing the module 3, the solar panel 5, or the like is made of a metal material, the antenna characteristics of the circularly polarized antenna 4 deteriorate if there is metal around it. In order to prevent the deterioration of the antenna characteristics, it is preferable that the feeding point 43 of the circularly polarized antenna 4 is separated as much as possible from the metal case, and the position close to the pointer shaft 31 as shown in FIG. Is provided with a feeding point 43.
On the other hand, the connection between the light receiving surface (in this embodiment, the light receiving surface of the solar cell 50d) and another light receiving surface (in this embodiment, the light receiving surfaces of the solar cells 50c and 50e) arranged at a position corresponding to the radiation electrode 42 is as follows. It is preferable that the circularly polarized antenna 4 is separated from the feeding point 43 as much as possible. For this reason, when the feeding point 43 is provided at a position close to the pointer shaft 31, the connection position between the solar cell 50 d and the other solar cells 50 c and 50 e is a position away from the feeding point 43.
Note that when the case is formed of a material other than a metal material (for example, resin), the position where the feeding point 43 is provided is not particularly limited, but the solar cell 50 can be connected even when the case is formed of resin or the like. The position is preferably separated from the feeding point 43.

Next, the operation of the timepiece 100 in this embodiment will be described.
When assembling the timepiece 100 in the present embodiment, first, the solar panel 5 divided into a plurality of solar cells 50 is formed, and among these, the solar cell 50d having a light receiving surface arranged at a position corresponding to the radiation electrode 42 is formed. The surrounding metal electrode 54, the semiconductor layer 55, and the transparent electrode 56 are removed to form an electrode removal portion 57.
And while connecting the light-receiving surface of each solar cell 50a-50g in series in each connection part 52a-52g, any connection part 52a-52g (For example, the connection part 52g provided in the solar cell 50a side, and the solar cell 50g side) A connector (connection member) (not shown) is connected to each of the connection portions 52g) provided on the circuit board, and this connector is connected to a + electrode and a-electrode on a circuit board (not shown). As a result, the solar panel 5 is electrically connected to the circuit board, and the power generated in the solar panel 5 can be charged into the secondary battery.

The circularly polarized antenna 4 is fitted to the antenna fitting portion 32 of the module 3, and the solar panel 5 is placed on the module 3 by aligning the positions so that the solar cell 50 d is arranged above the circularly polarized antenna 4. To do. And the dial 1 is laminated | stacked on the solar panel 5, and it accommodates in a case.
Furthermore, after attaching the pointer 2 to the pointer shaft 31 that penetrates the solar panel 5 and the dial 1 from the module 3 side and protrudes from the upper surface of the dial 1, the upper surface of the case (viewing side) A windshield member (not shown) formed of transparent glass or the like is mounted on the top. Thereby, the assembly of the timepiece 100 is completed.

In the timepiece 100 of this embodiment, when light that has passed through the windshield member and the dial 1 from the viewing side enters the solar panel 5 including the solar cells 50 a to 50 g, the light passes through the transparent electrode 56 and enters the semiconductor layer 55. To do. When light enters the semiconductor layer 55, electrons and holes are generated near the junction between the p-type semiconductor and the n-type semiconductor. The generated electrons and holes move toward the n-type semiconductor and the p-type semiconductor, respectively, and an electromotive force (photoelectromotive force) is generated. As a result, a current flows through a circuit connected to the transparent electrode 56 and the metal electrode 54. Thus, the electric power generated by the solar panel 5 is charged in the secondary battery.
In the timepiece 100, GPS radio waves transmitted through the windshield member and the dial 1 are incident on the circularly polarized antenna 4.
As described above, the end of the radiation electrode 42 in the circularly polarized antenna 4 is not covered with the conductive member (the metal electrode 54, the semiconductor layer 55, the transparent electrode 56, etc. of the solar panel 5). The spread of the radiation pattern is not inhibited, and the circularly polarized antenna 4 can receive GPS radio waves satisfactorily.
The GPS radio wave received by the circularly polarized antenna 4 is sent to a control circuit (not shown) in the module 3, and the control circuit uses the time information included in the GPS radio wave to accurately set the time in the timepiece 100. To correct.

As described above, according to the present embodiment, the module 3 includes the circularly polarized antenna 4 having the feeding point 43 and the radiation electrode 42 and has an area corresponding to the area in the surface direction of the dial 1. A solar panel 5 is disposed between the dial 1 and the module 3.
For this reason, GPS radio waves are received by the circularly polarized antenna 4 and accurate time information can be acquired and the time can be adjusted appropriately, and each part of the watch 100 can be operated with the power generated by the solar panel 5. it can. Thereby, in the timepiece 100, it is possible to save the user time and time for battery replacement.
The solar panel 5 includes a plurality of solar cells 50, and includes a solar cell 50 d having a light receiving surface arranged at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4.
For this reason, the light receiving area (that is, the area of the effective region that can be used for photovoltaic power generation) in the solar panel 5 can be secured widely, and the power generation efficiency can be improved.
Further, even when the solar cell 50d is arranged above the radiation electrode 42 of the circularly polarized antenna 4 in this way, the area of the light receiving surface corresponds to the radiation electrode 42 (that is, approximately equal to or more than that of the radiation electrode 42). Therefore, the end portion of the radiation electrode 42 is not covered by the solar cell 50d.
For this reason, the antenna characteristics of the circularly polarized antenna 4 are not deteriorated, and GPS radio waves including time information can be received satisfactorily.
Moreover, in this embodiment, the process which removes the metal electrode 54, the semiconductor layer 55, and the transparent electrode 56 is given to the part which covers the edge part of the radiation electrode 42 of the circularly polarized antenna 4, and the solar panel 5 itself is the dial 1 and They are arranged so as to cover the entire dial 1 with almost the same size.
Therefore, when the timepiece 100 is viewed from the dial 1 side, the boundary line around the antenna is not conspicuous compared to the case where the solar panel corresponding to the circularly polarized antenna 4 is cut out, and the timepiece 100 Design is improved.
In the present embodiment, a pointer shaft 31 is provided at the center of the module 3, and includes a plurality of hands 2 connected to the pointer shaft 31 and rotating around the upper surface of the dial 1 around the pointer shaft 31. The circularly polarized antenna 4 is arranged at a position avoiding the pointer shaft 31.
For this reason, it is not necessary to form a hole through which the pointer shaft 31 is inserted into the circularly polarized antenna 4. Thereby, a wide area of the radiation electrode 42 can be secured, and deterioration of the antenna characteristics of the circularly polarized antenna 4 can be avoided.
In the present embodiment, the light receiving surface (the light receiving surface of the solar cell 50d in the present embodiment) disposed at a position corresponding to the radiation electrode 42 and the other light receiving surfaces (the light receiving surfaces of the solar cells 50c and 50e in the present embodiment). ) Is a position separated from the feeding point 43.
When the case for housing the module 3, the solar panel 5, or the like is formed of a metal material, the feeding point 43 is provided at a position close to the pointer shaft 31 in order to keep the feeding point 43 as far as possible from the case. Thus, by separating the connection position of the solar cell 50 from the feeding point 43 provided on the pointer shaft 31 side (that is, closer to the center of the timepiece 100), the connection position of the solar cell 50 is the end of the circularly polarized antenna 4. It becomes a part or its vicinity, and the influence with respect to a radiation pattern can be suppressed. Thereby, the influence which the solar panel 5 has on the antenna characteristic of the circularly polarized antenna 4 can be minimized.

[Second Embodiment]
Next, a second embodiment of the electronic apparatus according to the invention will be described with reference to FIG. In addition, since this embodiment differs in the structure of a solar panel from 1st Embodiment, below, especially a different point from 1st Embodiment is demonstrated.

FIG. 4 is a plan view of the solar panel in the present embodiment.
As shown in FIG. 4, a through hole 61 through which the pointer shaft 31 is inserted is provided in a substantially central portion of the solar panel 6 of the present embodiment, as in the first embodiment.
In the present embodiment, the solar panel 6 includes a plurality of solar cells 60 (six solar cells 60 a to 60 f in the present embodiment), and receives light that is disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4. A solar cell 60 having a surface (in this embodiment, solar cells 60c and 60d) is included.
In addition, the metal electrode, the semiconductor layer, and the transparent electrode are removed in a region that is a part of the solar cells 60c and 60d and that follows the outer shape of the radiation electrode 42 and sandwiches the position corresponding to the end of the radiation electrode 42. Thus, an electrode removal portion 67 is formed.

A part (first region) of the light receiving surfaces of the solar cells 60c and 60d is disposed at a position corresponding to the radiation electrode 42 (a position above the radiation electrode 42 and a position substantially overlapping with the radiation electrode 42). Other light receiving surfaces of the solar cells 60c and 60d at positions away from the midpoint portion of each side of the electrode 42 (for example, corner portions of the radiation electrode 42) and as far as possible from the feeding point 43 of the circularly polarized antenna 4. (Second region).
As shown in FIG. 4, in the solar cells 60c and 60d, the portion overlapping the end of the radiation electrode 42 (that is, the connection portion between the light receiving surface in the first region and the light receiving surface in the second region) is the performance of the solar panel 6. In such a range that can be maintained, the narrowest possible width is formed.
As a result, the spread of the radiation pattern from the end of the radiation electrode 42 can be minimized.

In the present embodiment, the six solar cells 60a to 60f are formed in substantially the same area so that the respective output currents are substantially equal.
The light receiving surfaces of the solar cells 60a to 60f are connected in series and function as one solar panel.
Specifically, the solar cell 60a is electrically connected to the adjacent solar cell 60b at the connecting portion 62a, the solar cell 60b is electrically connected to the adjacent solar cell 60c at the connecting portion 62b, and the solar cell 60c is connected. The part 62c is electrically connected to the adjacent solar cell 60d, the solar cell 60d is electrically connected to the adjacent solar cell 60e at the connection part 62d, and the solar cell 60e is electrically connected to the adjacent solar cell 60f at the connection part 62e. Connected.
In addition, the connection part 62c which connects the solar cell 60c and the solar cell 60d is not limited to the position of the example of illustration. For example, a solar cell 60c, 60d may be connected by providing a connection portion at a position that does not extend above the circularly polarized antenna 4 (in FIG. 4, for example, near the through hole 61).
For example, the connection part 62f on the solar cell 60a side and the connection part 62f on the solar cell 60f side are independent, and connectors (connection members) (not shown) are connected to the connection parts 62f and 62f, respectively. And this solar panel 6 is electrically connected with a circuit board by each connecting this connector to + electrode and-electrode on a circuit board which is not illustrated. In addition, the connection part connected with a circuit board is not limited to the connection parts 62g and 62g, Any one of the connection parts should just have such a structure.

  In addition, since the other structure is the same as that of 1st Embodiment, the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.

Next, the operation of the timepiece according to this embodiment will be described.
In the present embodiment, the solar panel 6 divided into a plurality of solar cells 60 is formed, and among these, a position corresponding to the end of the radiation electrode 42 and a portion disposed in the vicinity thereof (in this embodiment, the solar cell 6 The electrode removal part 67 is formed by removing the metal electrode, the semiconductor layer, and the transparent electrode of a part of 60c and 60d).
And while connecting the light-receiving surface of each solar cell 60a-60f in series in each connection part 62a-62f, any connection part 62a-62f (For example, the connection part 62f provided in the solar cell 60a side, and the solar cell 60f side) A connector (connection member) (not shown) is connected to each of the connecting portions 62f) provided in the circuit board, and this connector is connected to a + electrode and a-electrode on a circuit board (not shown). As a result, the solar panel 6 is electrically connected to the circuit board, and the power generated in the solar panel 6 can be charged into the secondary battery.

In the present embodiment, the solar panel 6 including the solar cells 60a to 60f generates power when light enters, and the secondary battery is charged with the power generated by the solar panel 6.
As in the first embodiment, the end of the radiation electrode 42 in the circularly polarized antenna 4 is not covered with a conductive member (metal electrode, semiconductor layer, transparent electrode, etc. of the solar panel 6). Therefore, the spread of the radiation pattern is not hindered and the circularly polarized antenna 4 can receive GPS radio waves satisfactorily.

  Since other points are the same as those in the first embodiment, description thereof is omitted.

As described above, according to the present embodiment, the following effects can be obtained in addition to the same effects as those of the first embodiment.
That is, in the present embodiment, the light receiving surfaces arranged at positions corresponding to the radiation electrodes 42 of the circularly polarized antenna 4 are not configured by independent solar cells, but part of the light receiving surfaces of the solar cells 60c and 60d are formed. A light-receiving surface (light-receiving surface of the first region) disposed above the radiation electrode 42, a light-receiving surface of the first region, and another light-receiving surface (light-receiving surface of the second region) that deviates from above the radiation electrode 42 Are connected to form a single light-receiving surface.
For this reason, even when the area of the radiation electrode 42 of the circularly polarized antenna 4 is small, the area of each solar cell 60 does not have to be a small area that matches the area of the radiation electrode 42 (or an area smaller than this). Thereby, the area of each solar cell 60 can be increased, the number of solar cells 60 constituting the solar panel 6 can be reduced, and the solar panel 6 having good power generation efficiency and excellent productivity can be obtained. Can do.

In the present embodiment, two solar cells 60 having light receiving surfaces arranged at positions corresponding to the radiation electrodes 42 of the circularly polarized antenna 4 (that is, solar cells 60c and 60d) are used. The configuration is not limited to this.
For example, as shown in FIG. 5, it has a portion disposed above the radiation electrode 42 (light-receiving surface of the first region) and a portion off the radiation electrode 42 (light-receiving surface of the second region). One solar cell 68 (solar cell 68c in FIG. 5) in which the light-receiving surface of one region and the light-receiving surface of the second region are connected together may be provided.
In this case, the area of each solar cell 68 can be increased, the number of divisions of the solar panel 6 can be further reduced, and the solar panel 6 with higher productivity can be obtained.
In addition, since only one part of the solar cell 68 crosses the end of the radiation electrode 42 is required, the influence on the antenna characteristics of the circularly polarized antenna 4 can be further reduced.

Also in this case, the six solar cells 68a to 68e are formed in substantially the same area so that the respective output currents are substantially equal.
The light receiving surfaces of the solar cells 68a to 68e are connected in series so as to function as one solar panel.
Specifically, the solar cell 68a is electrically connected to the adjacent solar cell 68b at the connection portion 69a, the solar cell 68b is electrically connected to the adjacent solar cell 68c at the connection portion 69b, and the solar cell 68c is connected. The portion 69c is electrically connected to the adjacent solar cell 68d, and the solar cell 68d is electrically connected to the adjacent solar cell 68e at the connection portion 69d.
Further, for example, connectors (connection members) (not shown) are connected to the connection part 69e on the solar cell 68a side and the connection part 69e on the solar cell 68e side, respectively, and this connector is connected to the + electrode and the-electrode on the circuit board (not shown). To do.

[Third Embodiment]
Next, a third embodiment of the electronic apparatus according to the invention will be described with reference to FIG. In addition, since this embodiment differs in the structure of a solar panel from 1st Embodiment etc., below, especially a different point from 1st Embodiment etc. is demonstrated.

FIG. 6 is a plan view of the solar panel in the present embodiment.
As shown in FIG. 6, a through hole 71 through which the pointer shaft 31 is inserted is provided in a substantially central portion of the solar panel 7 of the present embodiment, as in the first embodiment.
In the present embodiment, the solar panel 7 includes a plurality of solar cells 70 (in this embodiment, seven solar cells 70 a to 70 g), and is a light receiving element disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4. A solar cell 70 having a surface (in this embodiment, solar cells 70c and 70e) is included.
In addition, the metal electrode, the semiconductor layer, and the transparent electrode are removed in a part of the solar cells 70c and 70e along the outer shape of the radiation electrode 42 and sandwiching the position corresponding to the end of the radiation electrode 42. Thus, the electrode removal portion 77 is formed.

A part (first region) of the light receiving surfaces of the solar cells 70c and 70e is disposed at a position corresponding to the radiation electrode 42 (a position above the radiation electrode 42 and a position substantially overlapping with the radiation electrode 42). The other light receiving surfaces of the solar cells 70c and 70e at positions away from the midpoint portion of each side of the electrode 42 (for example, corner portions of the radiation electrode 42) and as far as possible from the feeding point 43 of the circularly polarized antenna 4. (Second region).
As shown in FIG. 6, in the solar cells 70 c and 70 d, the portion overlapping the end of the radiation electrode 42 (that is, the connection portion between the light receiving surface in the first region and the light receiving surface in the second region) As long as the performance can be maintained, it is formed as narrow as possible.
As a result, the spread of the radiation pattern from the end of the radiation electrode 42 can be minimized.

In addition, in the plurality of solar cells 70a to 70g in the present embodiment, the pointer 2 (indicated by a two-dot chain line in FIG. 6) that moves the needles overlaps at least two of the plurality of solar cells 70a to 70g. Are arranged side by side in the radial direction around the pointer shaft 31 (indicated by a two-dot chain line in FIG. 6).
In other words, in the present embodiment, the solar cell 70d is arranged at the substantially central portion of the solar panel 7, and the other solar cells 70a to 70c and 70e to 70g are arranged in the circumferential direction of the solar panel 7 so as to surround the solar cell 70d. Are arranged along.
Accordingly, the pointer 2 always overlaps the solar cell 70d and at least one of the other solar cells 70a to 70c and 70e to 70g, regardless of the direction.
Specifically, for example, as shown in FIG. 6, when the pointer 2 points in the 3 o'clock direction of the timepiece, the pointer 2 overlaps the two solar cells 70 of the solar cell 70d and the solar cell 70f. Further, for example, when the pointer 2 points to the 6 o'clock direction of the timepiece, the pointer 2 overlaps with the three solar cells 70 of the solar cell 70d, the solar cell 70c, and the solar cell 70e.

In the portion of the solar cell 70 where the pointer 2 is overlapped, the power generation efficiency is lowered because the light does not transmit or does not easily transmit.
That is, in the solar cell 70 on which the pointer 2 is superimposed, the light receiving area (the area of the power generating portion) is reduced only in the portion where the pointer 2 is overlapped.
And since the pointer 2 is linearly arranged from the pointer shaft 31 to the peripheral portion of the solar panel 7, when the solar panel 7 is radially divided, the solar cell 70 that does not overlap with the solar cell 70 on which the pointer 2 overlaps. The difference in the area where power can be generated with the cell 70 increases.
The power generation amount of each solar cell 70 decreases in accordance with the power generation amount of the solar cell 70 with the smallest power generation amount (that is, the solar cell 70 on which the pointer 2 is superimposed in the above case). For this reason, if the light receiving area of some of the solar cells 70 decreases and the amount of power generation decreases, as a result, the power generation efficiency of the entire solar panel 7 significantly decreases.
In this regard, when there are two or more solar cells 70 on which the pointer 2 overlaps, a portion of the light receiving surface of the solar cell 70 where power generation is not possible can be distributed to a plurality of solar cells 70, and variations in power generation amount can be suppressed. Thus, the power generation efficiency of the solar panel 7 as a whole can be improved.

In the present embodiment, the seven solar cells 70a to 70g are formed in substantially the same area so that the respective output currents are substantially equal.
Note that, regardless of the direction in which the pointer 2 points, the solar cell 70d where the pointer 2 always overlaps is formed larger than the other solar cells 70a to 70c and 70e to 70g by the area where the pointer 2 overlaps. May be. Thereby, the substantial output current of each solar cell 70a-70g can be match | combined more precisely.
In particular, the pointer 2 is generally wider at the proximal end portion attached to the pointer shaft 31 and narrower toward the distal end, and the distal end side of the pointer 2 is superimposed on the solar cell 80. But the effect is small. When the pointer 2 is short, the tip of the pointer 2 may not reach the solar cells 70a to 70c and 70e to 70g provided around the solar cell 70d. For this reason, the solar cell 70d on which the base end portion of the pointer 2 is always superimposed is formed to be larger by the area of the pointer 2 to be superimposed, so that the power generation efficiency due to the pointer 2 overlapping with the solar cell 70 is improved. It can be expected to improve the drop efficiently.

The light receiving surfaces of the solar cells 70a to 70g are connected in series and function as one solar panel.
Specifically, the solar cell 70a is electrically connected to the adjacent solar cell 70b at the connecting portion 72a, the solar cell 70b is electrically connected to the adjacent solar cell 70c at the connecting portion 72b, and the solar cell 70c is connected. The part 72c is electrically connected to the adjacent solar cell 70d, the solar cell 70d is electrically connected to the adjacent solar cell 70e at the connection part 72d, and the solar cell 70e is electrically connected to the adjacent solar cell 70f at the connection part 72e. The solar cell 70f is electrically connected to the adjacent solar cell 70g at the connection portion 72f.
For example, the connection part 72g on the solar cell 70a side and the connection part 72g on the solar cell 70g side are independent from each other, and connectors (connection members) (not shown) are connected to the connection parts 72g and 72g, respectively. And this solar panel 7 is electrically connected with a circuit board by each connecting this connector to + electrode and-electrode on a circuit board which is not illustrated. In addition, the connection part connected with a circuit board is not limited to the connection parts 72g and 72g, and any connection part should just have such a structure.

In the present embodiment, a date wheel (not shown) is arranged in the module, and a date display window (not shown) for displaying the date is provided on the dial.
The solar panel 7 has a date display opening 711 at a position corresponding to the date display window of the dial.
In the present embodiment, the date display opening 711 is provided in the electrode removal portion 77 of the solar panel 7 that cannot be used for power generation.
Thereby, the date display opening 711 can be provided without affecting the power generation amount in the solar panel 7.

  In addition, since the other structure is the same as that of 1st Embodiment, the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.

Next, the operation of the timepiece according to this embodiment will be described.
In the present embodiment, the solar panel 7 is formed such that a plurality of solar cells 70 are arranged side by side in the radial direction around the pointer shaft 31.
Of the plurality of solar cells 70, the metal electrode, the semiconductor layer, and the transparent portion of the portion corresponding to the end of the radiation electrode 42 and a portion disposed in the vicinity thereof (in this embodiment, a part of the solar cells 70 c and 70 e). The electrode removal part 77 is formed by removing the electrode.
And while connecting the light-receiving surface of each solar cell 70a-70g in series in each connection part 72a-72g, any one connection part 72a-72g (For example, the connection part 72g provided in the solar cell 70a side, and the solar cell 70g side) A connector (connection member) (not shown) is connected to each of the connection portions 72g) provided on the circuit board, and this connector is connected to a + electrode and a-electrode on a circuit board (not shown). Thereby, the solar panel 7 is electrically connected to the circuit board, and the power generated in the solar panel 7 can be charged into the secondary battery.

In the present embodiment, the solar panel 7 including the solar cells 70a to 70g generates power when light enters, and the secondary battery is charged with the power generated by the solar panel 7.
Further, as in the first embodiment, the end of the radiation electrode 42 in the circularly polarized antenna 4 is not covered with a conductive member (metal electrode, semiconductor layer, transparent electrode, etc. of the solar panel 7). Therefore, the spread of the radiation pattern is not hindered and the circularly polarized antenna 4 can receive GPS radio waves satisfactorily.

  Since other points are the same as those in the first embodiment, the description thereof will be omitted.

As described above, according to this embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained.
In other words, in the present embodiment, the plurality of solar cells 70 constituting the solar panel 7 are centered on the pointer shaft 31 so that the pointers 2 operating the needle overlap the at least two or more of the plurality of solar cells 70. Are arranged side by side in the radial direction.
Thereby, the dispersion | variation in the electric power generation amount between the solar cells 70 which arises when the pointer | guide 2 overlaps with some solar cells 70 can be suppressed to the minimum. For this reason, the power generation efficiency as the whole solar panel 7 can be improved.

In the present embodiment, two solar cells 70 having light receiving surfaces arranged at positions corresponding to the radiation electrodes 42 of the circularly polarized antenna 4 (that is, solar cells 70c and 70e) are used. The configuration is not limited to this.
For example, as shown in FIG. 7, it has a portion arranged above the radiation electrode 42 (light receiving surface of the first region) and a portion outside the radiation electrode 42 (light receiving surface of the second region). One solar cell 78 (the solar cell 78c in FIG. 7) in which the light receiving surface in one region and the light receiving surface in the second region are connected together by the light receiving surface may be provided.
In this case, only one part of the solar cell 78 straddles the end of the radiation electrode 42 is required, and the influence on the antenna characteristics of the circularly polarized antenna 4 can be further reduced.

Also in this case, the seven solar cells 78a to 78g are formed in substantially the same area so that the respective output currents are substantially equal.
The light receiving surfaces of the solar cells 78a to 78g are connected in series so as to function as one solar panel.
Specifically, the solar cell 78a is electrically connected to the adjacent solar cell 78b at the connecting portion 79a, the solar cell 78b is electrically connected to the adjacent solar cell 78c at the connecting portion 79b, and the solar cell 78c is connected. The solar cell 78d is electrically connected to the adjacent solar cell 78d in the portion 79c, the solar cell 78d is electrically connected to the adjacent solar cell 78e in the connection portion 79d, and the solar cell 78e is electrically connected to the adjacent solar cell 78f in the connection portion 79e. The solar cell 78f is electrically connected to the adjacent solar cell 78g at the connecting portion 79f.
Further, for example, connectors (connection members) (not shown) are respectively connected to the connection part 79g on the solar cell 78a side and the connection part 79g on the solar cell 78g side, and this connector is connected to a + electrode and a-electrode on a circuit board (not shown). To do.

[Fourth Embodiment]
Next, a fourth embodiment of an electronic apparatus according to the invention will be described with reference to FIGS. In addition, since this embodiment differs in the connection method between solar cells from 1st Embodiment etc., below, especially a different point from 1st Embodiment etc. is demonstrated.

FIG. 8 is a plan view of the solar panel in the present embodiment, and FIG. 9 is a cross-sectional view taken along line IX-IX in FIG.
As shown in FIG. 8, a through hole 81 through which the pointer shaft 31 is inserted is provided in a substantially central portion of the solar panel 8 of the present embodiment, as in the first embodiment.
In the present embodiment, the solar panel 8 includes a plurality of solar cells 80 (seven solar cells 80 a to 80 g in the present embodiment), and receives light that is disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4. A solar cell 80 having a surface (in this embodiment, a solar cell 80g) is included.
Further, in a region around the solar cell 80g and sandwiching a position corresponding to the end of the radiation electrode 42, a process of removing the metal electrode, the semiconductor layer, and the transparent electrode along the outer shape of the radiation electrode 42 is performed. The electrode removal part 87 is formed.

In the present embodiment, the seven solar cells 80a to 80g are formed in substantially the same area so that the respective output currents are substantially equal.
The light receiving surfaces of the solar cells 80a to 80g are connected in series so as to function as one solar panel.
Specifically, the solar cell 80a is electrically connected to the adjacent solar cell 80b at the connection portion 82a, the solar cell 80b is electrically connected to the adjacent solar cell 80c at the connection portion 82b, and the solar cell 80c is connected. The solar cell 80d is electrically connected to the adjacent solar cell 80d in the part 82c, the solar cell 80d is electrically connected to the adjacent solar cell 80e in the connection part 82d, and the solar cell 80e is electrically connected to the adjacent solar cell 80f in the connection part 82e. Connected.

As shown in FIG. 9, the circularly polarized antenna 4 of the present embodiment has a through hole 44 at a position corresponding to the feeding point 43. A conductive film 44 a formed by a technique such as vapor deposition of a metal material or the like is provided on the inner surface of the through hole 44. The conductive film 44 a functions as a power supply member for supplying power to the radiation electrode 42. The power supply member that supplies power to the radiation electrode 42 is not limited to the conductive film 44a. For example, a feed pin or a coaxial cable as a feed member may be inserted through the through hole 44.
The connection portion 82f of the solar cell 80f is electrically connected to the substrate inner layer pattern 36a on the circuit substrate 35 side via a connector (connection member) 88f.
A connector (connecting member) 881g having one end connected to the solar cell 80g and the other end connected to the substrate inner layer pattern 36a on the circuit board 35 side is formed at the feeding point 43 of the circularly polarized antenna 4. The solar cell 80g is electrically connected in the solar cell 80f and the circuit board 35 through the substrate inner layer pattern 36a by being inserted into the through hole 44.
Further, the solar cell 80g is connected to the solar cell 80g by inserting a connector (connecting member) 882g having one end connected to the solar cell 80g and the other end connected to the board inner layer pattern 36b on the circuit board 35 side into the through hole 44. The circuit board 35 is electrically connected to the negative electrode 89g via the substrate inner layer pattern 36b.
Further, the connecting portion 82g of the solar cell 80a is electrically connected to the substrate inner layer pattern 36c on the circuit board 35 side via a connector (connecting member) 88a, and + on the circuit board 35 side via the substrate inner layer pattern 36c. The electrode 89a is electrically connected. Thereby, the solar panel 8 is electrically connected to the circuit board 35.

  In addition, since the other structure is the same as that of 1st Embodiment etc., the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.

Next, the operation of the timepiece according to this embodiment will be described.
In the present embodiment, the solar panel 8 divided into a plurality of solar cells 80 is formed, and among these, the metal electrode around the solar cell 80g arranged at the position corresponding to the end of the radiation electrode 42, the semiconductor layer, and The transparent electrode is removed to form an electrode removal portion 87.
The light receiving surfaces of the solar cells 80a to 80g are connected in series at the connecting portions 82a to 82g, and the solar cell 80g is connected to the negative electrode on the circuit board 35 side via the connector (connecting member) 882g and the substrate inner layer pattern 36b. Electrically connected to 89g. Further, the connecting portion 82g of the solar cell 80a is electrically connected to the + electrode 89a on the circuit board 35 side via the connector (connecting member) 88a and the board inner layer pattern 36c. Thereby, the solar panel 8 is electrically connected to the circuit board 35, and the power generated in the solar panel 8 can be charged into the secondary battery.

In the present embodiment, the solar panel 8 including the solar cells 80a to 80g generates power when light enters, and the secondary battery is charged with the power generated by the solar panel 8.
As in the first embodiment, the end of the radiation electrode 42 in the circularly polarized antenna 4 is not covered with a conductive member (metal electrode, semiconductor layer, transparent electrode, etc. of the solar panel 8). Therefore, the spread of the radiation pattern is not hindered and the circularly polarized antenna 4 can receive GPS radio waves satisfactorily.

  Since other points are the same as those in the first embodiment, the description thereof will be omitted.

As described above, according to this embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained.
That is, in the present embodiment, a solar having a light receiving surface disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4 by providing the connector 881g in the through hole 44 of the feeding point 43 of the circularly polarized antenna 4. The cell 80g is electrically connected to another solar cell 80 (solar cell 80f in FIG. 8) in the circuit board 35.
For this reason, there is no need to make electrical connection between the solar cell 80g and the other solar cell 80f above the radiation electrode 42 of the circularly polarized antenna 4, and there is no conductive member portion straddling the end of the radiation electrode 42. The reception performance can be improved by avoiding the influence on the antenna characteristics of the circularly polarized antenna 4.

[Fifth Embodiment]
Next, a fifth embodiment of the electronic apparatus according to the invention will be described with reference to FIG. In addition, since this embodiment differs in the structure of a solar panel from 1st Embodiment etc., below, especially a different point from 1st Embodiment etc. is demonstrated.

FIG. 10 is a plan view of the solar panel in the present embodiment.
As shown in FIG. 10, in the present embodiment, the circularly polarized antenna 4 is disposed at a position corresponding to the substantially central portion of the module in which the pointer shaft 31 is provided.
A pointer shaft insertion hole 45 through which the pointer shaft 31 is inserted is formed at a position corresponding to the pointer shaft 31 in a substantially central portion of the circularly polarized antenna 4.

Further, a through-hole 91 through which the pointer shaft 31 is inserted is provided in a substantially central portion of the solar panel 9 of the present embodiment, as in the first embodiment.
In this embodiment, the solar panel 9 is composed of a plurality of solar cells 90 (in this embodiment, nine solar cells 90 a to 90 i), and is a light receiving element disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4. A solar cell 90 having a surface (in this embodiment, a solar cell 90e) is included. In the present embodiment, the solar cell 90e is disposed at the substantially central portion of the solar panel 9 corresponding to the position of the circularly polarized antenna 4, and the other solar cells 90a to 90d and 90f to 90i are arranged around the solar cell 90e. The solar panel 9 is arranged along the circumferential direction.

Further, in a region around the solar cell 90e and sandwiching a position corresponding to the end of the radiation electrode 42, a process of removing the metal electrode, the semiconductor layer, and the transparent electrode along the outer shape of the radiation electrode 42 is performed. The electrode removal part 97 is formed.
A through hole 911 for inserting a shaft for attaching a functional needle or the like is provided in the range of the electrode removal portion 97.
As described above, by providing the through hole 911 in the electrode removal portion 97 that is a portion that cannot be used for power generation, a multifunction timepiece having various function hands can be realized without reducing the power generation efficiency of the solar panel 9. Can do.

In the present embodiment, the nine solar cells 90a to 90i are formed in substantially the same area so that the respective output currents are substantially equal.
In addition, about the solar cell 90e arrange | positioned at the center part of the solar panel 9, since it will be in the state by which the base end part of the pointer | guide 2 is always arrange | positioned, the area which can generate electric power will reduce by the part by which the pointer | guide 2 is superimposed. . For this reason, only the solar cell 90e may be formed larger than the other solar cells 90 by an area where the pointer 2 is superimposed.
The light receiving surfaces of the solar cells 90a to 90i are connected in series, and function as one solar panel.
Specifically, the solar cell 90a is electrically connected to the adjacent solar cell 90b at the connection portion 92a, the solar cell 90b is electrically connected to the adjacent solar cell 90c at the connection portion 92b, and the solar cell 90c is connected. The part 92c is electrically connected to the adjacent solar cell 90d. The solar cell 90f is electrically connected to the adjacent solar cell 90g at the connecting portion 92f, the solar cell 90g is electrically connected to the adjacent solar cell 90h at the connecting portion 92g, and the solar cell 90h is connected to the connecting portion 92h. It is electrically connected to the adjacent solar cell 90i.
The solar cell 90e having a light receiving surface arranged at a position corresponding to the radiation electrode 42 is electrically connected to the solar cell 90d at the connection portion 92d, and is electrically connected to the adjacent solar cell 90f at the connection portion 92e. Has been.
For example, the connection part 92i on the solar cell 90a side and the connection part 92i on the solar cell 90i side are independent of each other, and connectors (connection members) (not shown) are connected to the connection parts 92i and 92i, respectively. And this solar panel 9 is electrically connected with a circuit board by connecting this connector to + electrode and-electrode on a circuit board which is not illustrated, respectively. In addition, the connection part connected with a circuit board is not limited to the connection parts 92i and 92i, Any one of the connection parts should just have such a structure.

  In addition, since the other structure is the same as that of 1st Embodiment, the same code | symbol is attached | subjected to the same member and the description is abbreviate | omitted.

Next, the operation of the timepiece according to this embodiment will be described.
In the present embodiment, the pointer shaft insertion hole 45 is formed in the substantially central portion of the circularly polarized antenna 4.
Further, the solar panel 9 is formed so that the solar cell 90e is arranged at substantially the center of the solar panel 9, and the other solar cells 90 are arranged around the solar cell 90e along the circumferential direction of the solar panel 9.
Then, among the plurality of solar cells 90, the metal electrode, the semiconductor layer, and the transparent electrode around 90e arranged at a position corresponding to the radiation electrode 42 are removed to form the electrode removal portion 97.
And while connecting the light-receiving surface of each solar cell 90a-90i in series in each connection part 92a-92i, any connection part 92a-92i (For example, the connection part 92i provided in the solar cell 90a side, and the solar cell 90i side) A connector (connecting member) (not shown) is connected to each of the connecting portions 92i) provided in the connector, and this connector is connected to a + electrode and a-electrode on a circuit board (not shown). Thereby, the solar panel 9 is electrically connected to the circuit board, and the power generated in the solar panel 9 can be charged into the secondary battery.

In the present embodiment, the solar panel 9 including the solar cells 90a to 90i generates power when light enters, and the secondary battery is charged with the power generated by the solar panel 9.
Further, as in the first embodiment, the end of the radiation electrode 42 in the circularly polarized antenna 4 is not covered by the conductive member (metal electrode, semiconductor layer, transparent electrode, etc. of the solar panel 9). Therefore, the spread of the radiation pattern is not hindered and the circularly polarized antenna 4 can receive GPS radio waves satisfactorily.

  Since other points are the same as those in the first embodiment, the description thereof will be omitted.

As described above, according to this embodiment, the same effects as those of the first embodiment can be obtained, and the following effects can be obtained.
In other words, in the present embodiment, the circularly polarized antenna 4 is arranged at the substantially central portion of the module 3.
As a result, even when the distance from the pointer shaft 31 to the peripheral portion of the module is short, such as a small wristwatch, and the space for arranging the circularly polarized antenna 4 cannot be secured by avoiding the pointer shaft 31, Can be provided with a circularly polarized antenna 4 large enough to receive.
In addition, the solar cell 90 on which the pointer 2 is superimposed can be dispersed into the solar cell 90e disposed in the substantially central portion of the module 3 and the other solar cells 90 disposed around the solar cell 90e.
Thereby, the dispersion | variation in the electric power generation amount between the solar cells 90 produced when the pointer | guide 2 overlaps with some solar cells 90 can be suppressed to the minimum, and the electric power generation efficiency as the whole solar panel 9 can be improved. .
Even when the case is made of a metal material, the antenna characteristics can be prevented from deteriorating due to the influence of the metal material by disposing the circularly polarized antenna 4 almost at the center of the module 3. .

In the present embodiment, a solar cell 90e having a light receiving surface disposed at a position corresponding to the radiation electrode 42 at a substantially central portion of the module 3, and other solar cells 90 (in this embodiment, solar cells). 90d, 90f) is shown as an example in which the electrical connection to the solar cells 90e and the other solar cells 90d, 90f is performed by the connecting portions 92d, 92e.
For example, as shown in FIG. 11, a solar cell is formed in a circuit board via a pointer shaft insertion hole 45 provided in the circularly polarized antenna 4 for inserting the pointer shaft 31 without providing connection portions 92d and 92e. You may electrically connect 90e and the other solar cells 90d and 90f.
In this way, the solar cell 90e having the light receiving surface disposed at a position corresponding to the radiation electrode 42 of the circularly polarized antenna 4 is replaced with other solar cells 90 (solar cells 90d and 90f in FIG. 11) in the circuit board. When electrically connected, the solar cell 90e and the other solar cells 90d and 90f need not be electrically connected above the radiation electrode 42 of the circularly polarized antenna 4. For this reason, the conductive member portion straddling the end of the radiation electrode 42 can be eliminated, the influence on the antenna characteristics of the circularly polarized antenna 4 can be avoided, and the reception performance can be improved.
Note that the through hole for connecting the solar cell 90 is not limited to the pointer shaft insertion hole 45. For example, similarly to the fourth embodiment, the solar cell 90 may be connected using a feed through hole provided at a position corresponding to the feed point 43 of the circularly polarized antenna 4. Furthermore, when the through holes for functional needles and the like are formed within the range where the radiation electrode 42 is disposed, the solar cells 90 may be connected using these through holes.

In the present embodiment, the case where the pointer shaft insertion hole 45 is provided in the substantially central portion of the circularly polarized antenna 4 and the circularly polarized antenna 4 is disposed in the substantially central portion of the module is exemplified. The position is not limited to this, and may be a position deviated from the center of the module.
For example, when gear mechanisms for operating the hands 2 are concentrated in the central part of the module, the circularly polarized antenna 4 is arranged at a position shifted from the central part of the module to disperse the mounting density. It is preferable to aim for.
In this case, the solar cell 90e having a light receiving surface arranged at a position corresponding to the radiation electrode 42 is also arranged at a position shifted from the central portion of the solar panel 9 according to the position of the circularly polarized antenna 4. The

  Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and various modifications can be made without departing from the scope of the present invention.

For example, in each of the embodiments described above, the case where one circularly polarized antenna 4 is provided is illustrated, but the number of circularly polarized antennas 4 provided in the timepiece is not limited to this.
When a plurality of circularly polarized antennas 4 are provided, all of the solar cells having a light receiving surface arranged at a position corresponding to the radiation electrode 42 among the plurality of solar cells do not protrude outward from the radiation electrode 42. Adjust the size and shape so that

  Moreover, although each said embodiment illustrated the case where the light-receiving surface of the solar cell arrange | positioned in the position corresponding to the radiation electrode 42 was set as the magnitude | size arrange | positioned inside each side which delineates the external shape of the radiation electrode 42, For example, when a slit or a notch is formed in the radiation electrode 42, it is preferable that the light receiving surface of the solar cell is sized to be disposed further inside than the position where the solar cell is provided.

  Further, the method of dividing the solar panel (the number of divisions, the shape of each divided solar cell, etc.) is not limited to that exemplified in the above embodiments.

Further, in each of the above embodiments, the case where the timepiece that is an electronic device is the analog timepiece 100 that displays the time and the like by rotating the hands 2 on the dial 1, the timepiece is an analog type timepiece. It is not limited to things.
For example, a digital timepiece including a dial (for example, a liquid crystal display unit) that displays various information such as time and calendar information by characters or the like may be used. Further, a dial plate including both an analog display unit and a digital display unit may be included in the electronic device.

Further, in each of the above embodiments, the case where the electronic device is a watch is illustrated, but the electronic device is not limited to this.
The electronic device is a device that receives GPS radio waves by a circularly polarized antenna and acquires various types of information such as time information, generates power by a solar panel, and operates using the generated power as a drive source. For example, it may be a biological information display device such as a pedometer, a heart rate meter, or a pulse meter, a display device that displays various types of information such as movement distance and movement pace information, altitude information, and barometric pressure information.

Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and equivalents thereof. .
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
Dial and
A module including a circularly polarized antenna disposed under the dial and having a feeding point and a radiation electrode;
A solar panel disposed between the dial and the module, and having an area corresponding to an area in a surface direction of the dial;
With
The solar panel includes a plurality of solar cells, and includes a solar cell having a light receiving surface arranged at a position corresponding to the radiation electrode.
<Claim 2>
A pointer shaft is provided at the center of the module,
A plurality of pointers connected to the pointer shaft and rotating the upper surface of the dial around the axis of the pointer shaft;
The electronic device according to claim 1, wherein the circularly polarized antenna is disposed at a position avoiding the pointer shaft.
<Claim 3>
A through hole is provided in the circularly polarized antenna,
3. The light receiving surface disposed at a position corresponding to the radiation electrode and another light receiving surface are connected via a through hole provided in the circularly polarized antenna. Electronic equipment.
<Claim 4>
A pointer shaft is provided at the center of the module,
A plurality of pointers connected to the pointer shaft and rotating the upper surface of the dial around the axis of the pointer shaft;
The circularly polarized antenna is disposed at a position corresponding to a central portion of the module, and the circularly polarized antenna is provided with a pointer shaft insertion hole through which the pointer shaft passes. Item 2. The electronic device according to Item 1.
<Claim 5>
The light receiving surface disposed at a position corresponding to the radiation electrode and another light receiving surface are connected via a pointer shaft insertion hole provided in the circularly polarized antenna. Electronics.
<Claim 6>
The plurality of solar cells are arranged side by side in a radial direction centered on the pointer shaft so that the pointers operating above the solar cells overlap at least two of the plurality of solar cells. The electronic device according to any one of claims 1 to 5. <Claim 7>
7. The connection position for connecting a light receiving surface disposed at a position corresponding to the radiation electrode and another light receiving surface is a position separated from the feeding point. The electronic device according to one item.

1 Dial 2 Pointer 3 Module 4 Circularly Polarized Antenna 5 Solar Panel 31 Pointer Shaft 42 Radiation Electrode 43 Feeding Point 50 Solar Cell 52a-52g Connection Portion 54 Metal Electrode 55 Semiconductor Layer 56 Transparent Electrode 57 Electrode Removal Portion 100 Clock

Claims (7)

Dial and
A module including a circularly polarized antenna disposed under the dial and having a feeding point and a radiation electrode;
A solar panel disposed between the dial and the module, and having an area corresponding to an area in a surface direction of the dial;
With
The solar panel includes a plurality of solar cells, and includes a solar cell having a light receiving surface arranged at a position corresponding to the radiation electrode. A pointer shaft is provided at the center of the module,
A plurality of pointers connected to the pointer shaft and rotating the upper surface of the dial around the axis of the pointer shaft;
The electronic device according to claim 1, wherein the circularly polarized antenna is disposed at a position avoiding the pointer shaft. A through hole is provided in the circularly polarized antenna,
3. The light receiving surface disposed at a position corresponding to the radiation electrode and another light receiving surface are connected via a through hole provided in the circularly polarized antenna. Electronic equipment. A pointer shaft is provided at the center of the module,
A plurality of pointers connected to the pointer shaft and rotating the upper surface of the dial around the axis of the pointer shaft;
The circularly polarized antenna is disposed at a position corresponding to a central portion of the module, and the circularly polarized antenna is provided with a pointer shaft insertion hole through which the pointer shaft passes. Item 2. The electronic device according to Item 1.   The light receiving surface disposed at a position corresponding to the radiation electrode and another light receiving surface are connected via a pointer shaft insertion hole provided in the circularly polarized antenna. Electronics.   The plurality of solar cells are arranged side by side in a radial direction centered on the pointer shaft so that the pointers operating above the solar cells overlap at least two of the plurality of solar cells. The electronic device according to any one of claims 1 to 5.   7. The connection position for connecting a light receiving surface disposed at a position corresponding to the radiation electrode and another light receiving surface is a position separated from the feeding point. The electronic device according to one item.

Images