JP5610041B2 - Antenna built-in clock - Google Patents

Description

  The present invention relates to an antenna built-in timepiece having a patch antenna (microstrip antenna) that receives a radio wave transmitted from the outside.

Conventionally, a watch having an antenna for receiving radio waves has been developed. Here, the radio wave includes, for example, a satellite signal transmitted from a position information satellite.
As an antenna built-in type timepiece, for example, there is a wristwatch having a patch antenna that receives the satellite signal (see, for example, Patent Document 1).

  In Patent Literature 1, a wristwatch case is constituted by a bottomed cylindrical outer main body formed of a metal material. A bezel made of a material that easily transmits radio waves (for example, a plastic material) is connected to the upper end side (opening side) of the external body, and a cover glass is disposed inside the bezel. .

In such a wristwatch, a driving shaft for a pointer for performing time display is arranged at the center position on the plane of the dial. When the case is made of metal, the patch antenna in the case is preferably arranged as close as possible to the watch surface side, that is, the dial, in order to receive radio waves from the watch surface side.
For this reason, the patch antenna needs to be disposed between the drive shaft and the inner peripheral surface of the case. Therefore, the patch antenna of Patent Document 1 is disposed at a position shifted from the center of the case in the 12 o'clock direction of the dial.

By the way, since the patch antenna is a planar antenna, the thickness dimension can be reduced, and when incorporated in a wristwatch, there is an advantage that an increase in the thickness dimension of the watch can be suppressed.
On the other hand, in order to ensure the required reception performance, it is necessary to secure a certain size in the planar direction of the patch antenna. In recent years, patch antennas have also been downsized to some extent by technological developments such as the development of dielectric materials and the sensitivity of radios, but further miniaturization has been difficult to ensure the necessary reception performance. In addition, the plane size of the wristwatch needs to be limited to a size that can be worn on the wrist.
Therefore, when the patch antenna is disposed between the drive shaft disposed at the center of the plane of the watch and the inner peripheral surface of the case, as shown in FIGS. Be placed.

  When the case of a conductive member such as metal is close to the side surface of the antenna (the outer peripheral surface facing the inner peripheral surface of the case), the patch antenna is easily affected by the reception of radio waves and the reception performance is degraded. For this reason, in Patent Document 1, the lower end edge of the bezel is extended to near the lower surface position of the patch antenna, and the side surface side of the patch antenna is covered with the bezel to ensure the reception performance.

Special table 2007-526985

  By the way, in a timepiece, particularly a wristwatch, not only a practical functionality such as a timepiece display and communication but also a high quality texture is required. Therefore, in such a timepiece, a metal material is generally used for the exterior of the case.

However, in Patent Document 1, there is a problem that the area occupied by the plastic bezel increases, and the texture of the watch decreases.
On the other hand, when a metal case is used to enhance the texture, as described above, the patch antenna is disposed close to the metal case, so that there is a problem that reception characteristics are deteriorated. That is, since the patch antenna has unidirectionality, it is more suitable than the omnidirectional antenna when receiving only radio waves from the opening side of the metal case, that is, the cover glass and the dial side.
Nevertheless, the operating principle of the patch antenna is the same as that of the slot antenna, and the gap between the top electrode end and the ground plate (antenna end) radiates the strongest radio wave, so there is metal near the side of the patch antenna. Then, the characteristics are greatly deteriorated. Therefore, there is a problem that the reception performance of the antenna is significantly reduced.

  An object of the present invention is to provide a timepiece with a built-in antenna capable of ensuring good reception performance even when a metal case is adopted for the exterior.

The antenna built-in timepiece of the present invention includes a case formed of a conductive member, a dial formed of a non-conductive member, and a back surface of the dial, and receives light incident from the dial side. A solar panel that receives light and generates power; a date wheel that is disposed on the back side of the solar panel and is formed of a non-conductive member; and a radio wave that is disposed on the back side of the date wheel and apart from the case The solar panel has an opening formed in a portion overlapping the patch antenna in a plane, and the dial has a date display for visually confirming the date display of the date indicator. A date window is formed , and the date window is formed at a position where the entire window overlaps the opening in plan view.

In the present invention, the patch antenna is disposed away from the case. According to this, since the antenna is not close to the case, even when a conductive member (for example, a metal material) is adopted for the case, the influence of the conductive case can be reduced and the reception performance can be prevented from being lowered.
Na us, and the plane of the watch (case), refers to the plane orthogonal to the thickness direction of the timepiece, normally a plane parallel to the dial surface.
The dimensions of up to an outer peripheral surface of the case or Raa container considers the deterioration of the characteristics due to close to the case, by setting the dimension required to assure the reception performance required for an antenna built in clock Good.

Further, the upper end position of the case, even when set to approximately the same height as the upper surface of the patch antenna, since apart from the case are disposed antenna, antenna, not radio waves only incident from above Wireless radio waves incident from an oblique direction can be received without being blocked by the case. Therefore, as compared with Patent Document 1, the proportion of the metal material in the appearance of the watch can be increased, and the quality of the watch can be improved while ensuring good reception performance of the antenna.
Moreover, in this invention, since the solar panel was arrange | positioned at the back surface side of the dial, a timepiece can be driven with the electric power generated with the solar panel. For this reason, it is not necessary to replace the battery as in the case of using the primary battery, and the convenience for the user can be improved.
Further, since the substrate of the solar panel is thin but made of metal, high-frequency radio waves such as GPS satellite signals are attenuated. For this reason, if the patch antenna is covered with a solar panel, there is a high possibility that radio waves cannot be received.
In contrast, in the present invention, since the opening is formed in the solar panel, radio waves can be incident on the patch antenna through the opening. Therefore, the patch antenna can receive radio waves that do not pass through the solar panel, and accordingly, attenuation of the received radio waves by the solar panel can be prevented and reception performance can be improved.
In addition, the date wheel is formed of a non-conductive member and does not affect reception by the patch antenna, so it can be arranged at a position overlapping the antenna in a plane.
Also, on the dial, the date window provided for visually recognizing the date display of the date indicator, that is, the numbers from 1 to 31 is arranged at a position overlapping the opening of the solar panel, so It is not necessary to separately form an opening for visually recognizing the date dial on the panel, and the light receiving area can be increased compared with the case where the opening is separately provided, and the power generation performance can be improved.
That is, when the date wheel is arranged on the back side of the solar panel, it is necessary to form an opening in the solar panel so that the date display can be visually recognized from the date window.
On the other hand, in the present invention, since the date window is located at the opening of the solar panel, the date display of the date indicator can be visually recognized through the opening from the date window. Therefore, it is not necessary to separately form an opening for the date wheel in the solar panel, and the light receiving area can be increased accordingly.

The watch with a built-in antenna according to the present invention further includes a movement that is housed in the case and includes a plurality of motors that drive pointer shafts provided at a plurality of locations, and the patch antenna is a predetermined from the inner peripheral surface of the case. It is preferable that the pointer shafts are arranged apart from each other by a dimension or more, and the pointer shafts are arranged between the case and the patch antenna.
Here, the pointer shaft is usually attached with a pointer that indicates hour, minute, second, etc., and performs time display, but other information such as day, day of week, longitude, latitude, etc. may be displayed.
Note that disposing the antenna away from the inner peripheral surface of the case by a predetermined dimension or more means that the minimum value of the distance between the outer peripheral surface of the antenna and the inner peripheral surface of the case is not less than the predetermined dimension. Therefore, if the antenna is arranged at the center position of the plane of the case, the interval can be set to the maximum.
According to the present invention, when the antenna is arranged apart from the inner peripheral surface of the case by a predetermined dimension or more, the pointer shaft is arranged in the space between the antenna and the case. Can be achieved.
Note that since the pointer shaft is a thin shaft-like member made of metal, the influence on the reception performance is small even if it is disposed close to the patch antenna. If the pointer shaft is a non-conductive member such as plastic, the effect on the reception performance of the patch antenna can be further reduced.

Further, it is preferable that the predetermined dimension is a dimension necessary for ensuring reception performance and is set to a dimension capable of arranging the pointer shaft.
Here, the dimension in which the pointer shaft can be disposed means a dimension in which at least the pointer shaft and a gear meshing with the pointer shaft in the train wheel for driving the pointer shaft can be disposed between the antenna and the case.
In this case, since the minimum distance between the antenna and the case is a dimension that allows the pointer shaft to be disposed, the pointer shaft can be disposed at any position around the antenna, and the degree of freedom of the pointer layout of the watch can be improved. .
In the antenna built-in timepiece of the invention, it is preferable that the area of the opening is the same as the planar area of the patch antenna.
In the antenna built-in timepiece of the invention, it is preferable that the solar panel is composed of four solar cells.
In the antenna built-in timepiece of the present invention, it has a pointer shaft, the solar panel has a plurality of solar cells, and a through hole for the pointer shaft is formed on a dividing line of the solar cell. preferable.

  In the antenna built-in timepiece according to the present invention, at least two displays of the first display unit and the second display unit are formed on the surface of the dial plate in a flat circular shape, and the pointer shaft is arranged at a plane center position. And the patch antenna has a line connecting the pointer axis of the first display unit and the pointer axis of the second display unit. It is preferable that they are arranged in a position overlapping with the plane.

According to such a configuration, since the first display unit has a larger diameter than the second display unit, it is possible to use a large pointer attached to the pointer shaft of the first display unit. For this reason, if the time of the present location is displayed on the 1st display part, the present time of the present location can be checked easily and the convenience can be improved.
In addition to the first display unit, at least the second display unit is provided, so that the time of another preset region can be displayed to realize a dual time display function, or the reception sensitivity and the remaining battery level are instructed. A status display function can be realized, and convenience can be improved.
In addition, since the patch antenna is disposed at a position that overlaps the line connecting the pointer axis of the first display unit and the pointer axis of the second display unit, the space between the pointer axes can be used effectively. In addition, the pointer shaft of each display unit is arranged between the patch antenna and the case inner peripheral surface, and the dimension between the patch antenna and the case inner peripheral surface can be secured more than the radius of each display unit. For this reason, the patch antenna can be easily separated from the inner peripheral surface of the case by a predetermined dimension or more.

In the antenna built-in timepiece according to the present invention, the dial is shaped so that the vertical and horizontal dimensions of the dial surface are different from each other. In addition to the first display unit and the second display unit, A third display part formed in a plane circle and having the pointer shaft arranged at the center of the plane is formed, and the diameter of the third display part is smaller than the diameter of the first display part. The patch antenna is disposed between the pointer shaft of the second display unit and the pointer shaft of the third display unit in a direction having a short dimension among the vertical direction and the horizontal direction of the dial plate, In the longitudinal direction and the lateral direction of the dial plate, it is preferable that the dial is arranged closer to the pointer shaft side of the second and third display portions than the pointer shaft of the first display portion.
Here, the dial of the present invention has a planar elliptical shape, a planar rectangular shape, a combined shape of a rectangle and a semicircle, and a combined shape of a rectangle and a semi-ellipse (the ellipse is divided into two major axes or minor axes). Things can be used. Thus, for example, in the case of a plane ellipse-shaped dial, the longer dimension is the major axis direction of the ellipse, and the shorter dimension is the minor axis direction of the ellipse.
The vertical direction (vertical direction) of the dial surface means a direction connecting the 12 o'clock position and the 6 o'clock position on the dial plate, and the horizontal direction (horizontal direction) means a direction connecting the 3 o'clock position and the 9 o'clock position. Means.

According to such a configuration, since the patch antenna is disposed between each of the pointer shafts, the antenna is disposed away from the case with respect to the distance between the case and the pointer shaft. The pointer shafts are often arranged away from the case by at least the length of the pointer so that the pointer attached to the shaft does not contact the case.
Therefore, according to the present invention, the antenna can be arranged apart from the case by the length of each of the pointers, and the layout of the pointers and the antenna can be easily set.
Further, from the positional relationship between the patch antenna and the pointer shaft, the plane center position of the first display unit and the plane center positions of the second display unit and the third display unit are arranged so as to be shifted in the long direction. The planar center positions of the second display unit and the third display unit are arranged so that the dimensions are shifted in the short direction.
For this reason, each display unit can be laid out in a well-balanced manner on the dial, and the design of the watch can be improved. A watch with a different pointer layout from a general analog watch that has a pointer shaft at the center of the dial. Can be configured.

  In the present invention, for example, if the patch antenna is arranged at a predetermined dimension or more away from the case and the pointer shafts provided at a plurality of places are arranged between the case and the patch antenna, for example, the plane center of the dial of the watch An antenna may be disposed in the portion, and a display portion having the same diameter may be disposed around the antenna. In this case as well, a timepiece having a different handpiece layout can be configured from a general analog timepiece in which a hand shaft is provided at the center of the dial plate. Furthermore, since a plurality of pointer shafts can be arranged around the antenna, a timepiece capable of displaying other information in addition to the time information can be easily realized.

  In the antenna built-in timepiece of the present invention, the time measuring means for measuring the internal time, the time receiving means for starting reception using the patch antenna when the internal time reaches a predetermined time, and driving the motor Motor driving control means for controlling, the plurality of pointer shafts display time based on the internal time, and a pointer including a position overlapping with the patch antenna in a plane of movement is attached. And a pointer shaft to which information other than the time is displayed and a pointer shaft including a position where the patch antenna overlaps the patch antenna is included in the movement trajectory. , The scheduled reception is started at a time when the pointer for displaying the time does not overlap the patch antenna in a plane, and the motor drive control means is configured to receive the scheduled reception. While scheduled reception by stage is being performed, the guidance display information other than the time, it is preferable to move to a position not overlapping the patch antenna in plan view.

According to such a configuration, since the time when the pointer indicating the time does not overlap with the patch antenna is set as the scheduled reception time, the pointer displaying the time overlaps with the antenna when receiving at the fixed time. Even if a metal pointer is used, reception by the antenna is not affected.
In addition, the pointer that displays information other than the time, for example, the received signal level, is also moved to a position that does not overlap the patch antenna by the motor drive control means at the time of regular reception. It can also prevent the influence.
Therefore, even when metal pointers are used, the pointers do not overlap with the patch antenna during reception, so that it is possible to prevent a decrease in reception sensitivity.

It is also conceivable to move the time display pointer to a position that does not overlap with the patch antenna during regular reception. In this case, reception cannot be started until the pointer is moved, and time cannot be displayed during reception.
On the other hand, according to the present invention, the pointer for displaying the time does not overlap the antenna in a plane while indicating the current time, so there is no need to move the pointer for displaying the time, and the current time is set. Reception processing can be performed quickly while displaying.

  In the antenna built-in timepiece according to the aspect of the invention, it is preferable that the predetermined dimension is a dimension capable of arranging the motor.

If the predetermined dimension, that is, the minimum value of the distance between the outer peripheral surface of the patch antenna and the inner peripheral surface of the case is set to a dimension at which the motor can be disposed, the motor can be disposed at any position around the antenna. And the flexibility of the layout of the pointer driven by the motor can be improved.
Furthermore, since a plurality of motors serving as driving sources for driving the hands can be disposed between the inner peripheral surface of the case and the outer peripheral surface of the patch antenna, the antenna and the plurality of motors overlap in the thickness direction of the watch. There is no. For this reason, the thickness dimension of the timepiece can be reduced as compared with a timepiece having a configuration in which the patch antenna and the motor overlap in the thickness direction. In particular, since the antenna and the motor are parts having a relatively large thickness dimension among the parts of the timepiece, the thickness dimension of the timepiece can be significantly reduced if these parts can be arranged without being planarly overlapped.

In the antenna built-in timepiece of the present invention, it is preferable that the solar cell has a secondary battery to which power is supplied by the solar panel, and the patch antenna and the secondary battery are arranged at positions that do not overlap in a plane. .

According to the present invention, since the antenna and the secondary battery do not overlap in a planar manner, as compared with the case of arranging overlapping the antenna and a secondary battery in the thickness direction, it is possible to reduce the thickness of the timepiece.

  In the antenna built-in timepiece of the invention, it is preferable that the patch antenna receives a circularly polarized radio wave transmitted from a position information satellite.

Here, examples of circularly polarized waves include satellite signals transmitted from position information satellites such as GPS: Global Positioning System, Galileo (European Satellite Navigation System), SBAS: Satellite-Based Augmentation System.
Therefore, since the patch antenna of the present invention receives circularly polarized radio waves, for example, any watch on the earth can be used as long as it has a function of correcting the time by using time information included in the satellite signal. Radio waves from the location information satellite can be received reliably, and accurate time can always be maintained.
In the antenna built-in timepiece according to the aspect of the invention, it is preferable that the patch antenna is a planar antenna in which a ground plane and an antenna electrode are arranged in parallel.
In the antenna built-in timepiece according to the aspect of the invention, it is preferable that the patch antenna includes an antenna substrate, a dielectric laminated on the antenna substrate, and an antenna electrode formed on the dielectric.
In the antenna built-in timepiece of the invention, it is preferable that the patch antenna is an inverted F antenna.
In the antenna built-in timepiece of the present invention, the patch antenna is preferably a chip antenna in which an inverted F antenna is formed on a ceramic dielectric.
In the antenna built-in timepiece of the invention, it is preferable that the patch antenna is disposed on a circuit board that functions as a ground plate.
The patch antenna is a flat antenna, and is known for having a single directivity and narrow directivity. However, the circuit board on which the patch antenna is mounted has the function of a ground plate. It is possible to reflect the radio wave incident on the circuit board and guide it to the antenna. Therefore, the antenna can receive not only radio waves directly incident on the antenna but also radio waves incident indirectly after being reflected by the circuit board. Therefore, the reception performance of the antenna can be further improved.

Schematic which shows the wristwatch with GPS which concerns on 1st Embodiment of this invention. The top view of the said wristwatch with GPS. A schematic sectional view of the GPS wristwatch. The top view of the movement integrated in the said wristwatch with GPS. (A) is sectional drawing which shows the structure of a patch antenna, (B) is a characteristic view which shows the radiation pattern of a patch antenna. Schematic which shows the circuit structure of the said wristwatch with GPS. The schematic sectional drawing which shows the wristwatch with GPS which concerns on 2nd Embodiment of this invention. The disassembled perspective view which shows typically the principal part which concerns on the said 2nd Embodiment. The disassembled perspective view which shows typically the principal part which concerns on 3rd Embodiment of this invention. The top view which shows the wristwatch with GPS which concerns on 4th Embodiment of this invention. The perspective view which shows the circuit board which concerns on the said 4th Embodiment. The schematic sectional drawing of the wristwatch with GPS which concerns on the said 4th Embodiment. The top view which shows the wristwatch with GPS which concerns on 5th Embodiment of this invention. The top view which shows the wristwatch with GPS which concerns on the said 5th Embodiment. The top view which shows the wristwatch with GPS which concerns on 6th Embodiment of this invention. The top view which shows the wristwatch with GPS which concerns on the modification of this invention. The rear view of the movement integrated in the wristwatch with GPS which concerns on the said modification.

[First Embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment according to the invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram showing a GPS wristwatch 1A which is an antenna built-in type timepiece according to the present invention.
As shown in FIG. 1, the GPS wristwatch 1A receives satellite signals from a plurality of GPS satellites S orbiting the earth over a predetermined orbit, acquires satellite time information, and corrects internal time information. It is configured to be able to.
Here, the GPS satellite S is an example of the position information satellite in the present invention, and a plurality of GPS satellites S exist over the earth. Currently, about 30 GPS satellites S orbit.
The GPS wristwatch 1A is provided with an operation button 8 and a crown 9 for external operation.

[Configuration of GPS wristwatch]
FIG. 2 is a plan view of the GPS wristwatch 1A. FIG. 3 is a schematic cross-sectional view of the GPS wristwatch 1A. FIG. 4 is a plan view of the movement 10.
The GPS wristwatch 1A includes a dial 2 formed of a non-conductive synthetic resin material such as polycarbonate.
The GPS wristwatch 1A is composed of a scale, a pointer, and the like formed on the dial 2, and includes a first time display unit 3, a second time display unit 4, a longitude display unit 5, a latitude display unit 6, and a date display unit. 7 is provided.

The first time display unit 3 includes a circular scale display unit 31 provided at the 6 o'clock position of the dial 2 and a first pointer 32. The scale display unit 31 includes a scale divided into 60 along the outer peripheral edge.
The first hand 32 is made of metal and is held by a triple hand shaft 320 penetrating through the center of the first time indicator 3, and includes a first second hand 321, a first minute hand 323, and a first hour hand 322. And.
Each pointer shaft 320 to which the first second hand 321, the first minute hand 323, and the first hour hand 322 are attached is driven by a stepping motor 131 described later.

Similar to the first time display unit 3, the second time display unit 4 includes a circular scale display unit 41 provided at the 3 o'clock position of the dial 2 and a second pointer 42. The scale display unit 41 includes a scale divided into 60 along the outer peripheral edge.
The second pointer 42 is made of metal and is held by a double pointer shaft 420 penetrating through the center of the second time display unit 4, and includes a second minute hand 421 and a second hour hand 422.
Each pointer shaft 420 to which the second minute hand 421 and the second hour hand 422 are attached is also driven by a stepping motor 132 described later.

  In the configuration described above, so-called dual time display is possible in which the first time display unit 3 and the second time display unit 4 display the current time in different regions. For example, it is possible to display the time at the destination as a local time by the first time display unit 3 by traveling or the like, and to display the home country time as the home time by the second time display unit 4.

The longitude display unit 5 includes a circular scale display unit 51 provided at the 9 o'clock position of the dial 2 and a pointer 52 for displaying longitude. The scale display unit 51 includes a scale divided into 18 along the outer peripheral edge.
The pointer 52 is made of metal, is held by a pointer shaft 520 that passes through the center of the longitude display unit 5, and is driven by a stepping motor 133 described later.
Note that when the positioning information is not displayed on the longitude display unit 5, the remaining battery level may be displayed with the pointer 52.

The latitude display unit 6 includes a circular scale display unit 61 provided at the 12 o'clock position of the dial 2 and a pointer 62 for displaying latitude. The scale display unit 61 includes a scale divided into 90 along the outer peripheral edge.
The pointer 62 is made of metal, is held by a pointer shaft 620 that passes through the center of the latitude display unit 6, and is driven by a stepping motor 134 described later.
In the case where the positioning information is not displayed on the latitude display unit 6, the day of the week may be displayed with the hands 62. In this case, a scale indicating the day of the week may be displayed on the scale display unit 61.

  The date display unit 7 includes a date window 2 </ b> A opened in a rectangular shape near the center of the dial 2, and a date dial 18 described later disposed on the back surface of the dial 2. The date window 2 </ b> A is formed at a position shifted in the 4 to 5 o'clock direction from the center of the dial 2 and is adjacent to the first time display unit 3 and the second time display unit 4. The date dial 18 is driven by a stepping motor 135, which will be described later, and the date (date display) printed on the date dial 18 is exposed and displayed from the date window 2A.

[Internal configuration of GPS wristwatch]
As shown in FIGS. 2 and 3, the GPS wristwatch 1 </ b> A includes a movement 10 that drives the hands 32, 42, 52, and 62, and an exterior case 11 that houses the movement 10.

The exterior case 11 includes a cylindrical cylindrical case 111 and a back cover 112 that closes one opening (lower side in FIG. 3) of the cylindrical case 111.
The back cover 112 includes an annular metal first back cover part 112A and a disk-shaped glass second back cover part 112B held by the first back cover part 112A. The first back cover portion 112A is connected to the end surface of the cylindrical case 111 by a screw structure.
Here, the cylindrical case 111 and the first back cover part 112A are made of a conductive metal material such as SUS (stainless steel) or a titanium alloy.

The movement 10 includes a circuit board 12, a drive mechanism 13, a secondary battery 14, a ground plane 17, and a patch antenna 19.
On the circuit board 12, circuit elements of a control unit (control module) 16 that controls the drive mechanism 13 and a reception unit (GPS reception module) 20 that processes a signal received from the GPS satellite S are mounted. Specifically, as shown in FIG. 3, the receiving unit 20 is mounted on the lower surface side of the circuit board 12 (the surface opposite to the patch antenna 19). Since a circuit pattern made of metal is formed on the circuit board 12, noise radiated from a crystal oscillation circuit 23 (described later) provided in the receiving unit 20 (see FIG. 6) can be blocked by the circuit board 12. . Therefore, compared with the case where the receiving unit 20 is mounted on the upper surface side of the circuit board 12, the patch antenna 19 can be suppressed from being affected by noise, and the receiving performance can be improved. Moreover, since the receiving part 20 is arrange | positioned in the dead space (space around the secondary battery 14) of the lower surface side of the circuit board 12, space can be utilized efficiently. Furthermore, since the receiving unit 20 is disposed at a position that does not overlap the secondary battery 14 in a planar manner, the thickness dimension of the GPS wristwatch 1A can be reduced.

The driving mechanism 13 includes the stepping motors 131 to 135 described above, and wheel trains 136 and 137 that transmit the driving force of the stepping motors 131 to 135 to the pointer shafts 320, 420, 520, 620 and the date wheel 18. And a drive circuit 130 (see FIG. 6) for driving the stepping motors 131 to 135 in accordance with a control signal from the control unit 16. Therefore, the motor drive control means of the present invention is constituted by the drive circuit 130.
Further, the respective hands 32, 42, 52, 62 and the date wheel 18 are driven by the drive mechanism 13, and various information such as time, longitude, latitude and the like are displayed.

The secondary battery 14 is a rechargeable battery such as a lithium ion battery, and supplies power to the drive mechanism 13, the control unit 16, the reception unit 20, and the like.

  The ground plate 17 is made of a non-conductive plastic material and is disposed on the back surface of the dial 2. As shown in FIG. 4, an opening 171 is formed in the central portion of the base plate 17.

A date wheel 18 is arranged on the main plate 17. The date dial 18 is made of a non-conductive plastic material and is formed in an annular shape. Numbers 1 to 31 as date indications are printed on the date indicator 18. Thus, since the date wheel 18 needs to be printed for 31 days, if the diameter is too small, one character becomes small and difficult to see.
For this reason, as shown in FIG. 4, the diameter of the date dial 18 is set to be larger than half the diameter of the dial 2 and the main plate 17. The date wheel 18 is arranged so that a part thereof is positioned on the opening 171 in accordance with the position of the date window 2A of the dial 2, and the number printed on the date wheel 18 is It is exposed from the date window 2A so that the date can be visually recognized from the outside.

In the present embodiment, the patch antenna 19 receives circularly polarized radio waves transmitted from a position information satellite. Here, the operating principle of the patch antenna is that a strong electric field along the edge of the patch (antenna electrode) is radiated from the edge of the patch toward the space (when used as a transmitting antenna), so that the antenna top surface as well as the antenna top surface The side also needs to be separated from the metal by several mm. The patch antenna of the present invention refers to a planar antenna in which a ground plane and an antenna electrode are arranged substantially in parallel. One side of the antenna resonates at 1/2 wavelength, but one side of the antenna electrode is short-circuited with the ground plane. Thus, an inverted F antenna that resonates at a quarter wavelength is also included. Inverted F antenna is a half-wavelength patch antenna with a radiation electrode halved to reduce the size of the antenna. is there. A so-called chip antenna in which an inverted F antenna is formed on a ceramic dielectric is also included in the patch antenna of the present invention. In short, the patch antenna of the present invention is a classification as an operating principle of the antenna.
Specifically, as shown in FIG. 5A, the patch antenna 19 of the present embodiment is formed by laminating a ceramic dielectric 193 on an antenna substrate 191 serving as a ground plane, and further, a conductive antenna on the dielectric 193. This is a patch antenna in which the electrode 194 is integrally formed by silver (Ag) printing or the like. In FIG. 5A, a dotted line 195 indicates a radio wave received by the patch antenna 19, and an arrow 196 indicates a line of electric force.
Here, in order to easily adjust the frequency of the patch antenna 19, the antenna substrate 191 is configured by a substrate different from the circuit substrate 12 on which the receiving unit 20 that is a GPS receiving module is mounted. The signal line of the antenna board 191 of the patch antenna 19 is soldered to the circuit board 12 after the frequency adjustment.

FIG. 5B is a characteristic diagram showing a radiation pattern of the patch antenna 19. Here, as shown in FIG. 3, the plane direction of the patch antenna 19 is taken as the X axis, and the zenith direction is taken as the Z axis.
As shown in FIG. 5 (B), the patch antenna 19 has the most directivity in the Z-axis direction, which is the zenith direction, and therefore, the patch antenna 19 is most likely to receive radio waves incident on the dial 2 in the vertical direction. Further, the directivity in the X-axis direction, which is the side surface direction of the patch antenna 19, is small compared to the Z-axis direction, but has a certain degree of strength. Therefore, the metal case 11 is disposed close to the side surface of the patch antenna 19. And reception performance will be affected.
On the other hand, since the directivity in the −Z-axis direction, which is the lower surface direction of the patch antenna 19, is weak, the metal battery 14 is arranged on the lower surface side as compared with the omnidirectional antenna having uniform directivity around. Even if it is, it is hard to affect reception performance.

The patch antenna 19 is formed in a rectangular shape in plan view, and is inserted through a rectangular opening 171 of the ground plane 17. For this reason, a part of the date dial 18 is arranged on the upper surface (the dial 2) side of the patch antenna 19.
The patch antenna 19 is disposed at a position separated from the inner peripheral surface of the cylindrical case 111 by a predetermined dimension or more. Specifically, as shown in FIG. 4, the minimum distance L between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 is set to a predetermined dimension or more. In this embodiment, since the patch antenna 19 is disposed at the plane center position of the GPS wristwatch 1A, the interval L is set to be the largest as compared with the case where the patch antenna 19 is disposed at a position shifted from the plane center position. ing.

Here, the specific size of the “predetermined dimension” is that the patch antenna 19 is received by the patch antenna 19 without being blocked by the cylindrical case 111, or by deterioration of reception characteristics caused by bringing the patch antenna 19 close to the cylindrical case 111 made of metal. In consideration of the range of incident angles of radio waves that can be generated, the reception performance required for the GPS wristwatch 1A may be set.
In the present embodiment, the dial plate 2 is disposed at substantially the same height as the upper surface of the cylindrical case 111, and the patch antenna 19 is disposed on the back surface of the dial plate 2 with the date wheel 18 interposed therebetween. For this reason, the upper surface of the patch antenna 19 is positioned substantially on the same plane as the upper surface of the cylindrical case 111.

Stepping motors 131 to 135 and wheel trains 136 and 137 of the drive mechanism 13 are arranged between the patch antenna 19 and the inner peripheral surface of the cylindrical case 111. Therefore, the “predetermined dimension” is a dimension in which these stepping motors 131 to 135 can be arranged. As shown in FIGS. 2 and 3, the pointer shafts 320, 420, 520 and 620 driven by the drive mechanism 13 are also arranged between the patch antenna 19 and the inner peripheral surface of the cylindrical case 111.
Therefore, in the movement 10 of this embodiment, the stepping motors 131 to 135, the wheel trains 136 and 137, and the pointer shafts 320, 420, 520, and 620 are disposed around the patch antenna 19. In other words, the patch antenna 19 is disposed between the pointer shafts 320 and 620 and between the pointer shafts 420 and 520.
The pointer shafts 320, 420, 520, and 620 are usually made of metal, but are composed of a thin pipe-like member or the like, so that the needle shafts 320, 420, 520, and 620 may be disposed closer to the patch antenna 19 than the outer case 11. The reception performance is hardly affected. If the pointer shafts 320, 420, 520, and 620 are made of a non-conductive member such as plastic, the influence on the reception performance can be further reduced.

  In the movement 10 of the present embodiment, the drive mechanism 13, the patch antenna 19, the circuit board 12, and the secondary battery 14 are arranged in order from the dial 2 side toward the back cover 112 side. The receiving unit 20 and the control unit 16 mounted on the circuit board 12 are arranged on the back side (the back cover 112 side) of the circuit board 12.

A magnetic sheet 81 is disposed below the secondary battery 14 (on the back cover 112 side), and a charging coil 82 is disposed through the magnetic sheet 81. Therefore, the secondary battery 14 can be charged with electric power by non-contact electromagnetic induction from an external charger (not shown) by the charging coil 82. Therefore, the portion of the back cover 112 that overlaps the charging coil 82 in a plan view is provided with the above-described second back cover portion 112B made of glass for power transfer.
The magnetic sheet 81 disposed on the upper side of the charging coil 82 (on the secondary battery 14 side) is provided to reduce eddy current loss of the metal can of the secondary battery 14 due to the magnetic field induced in the charging coil 82. It has been.

The GPS wristwatch 1 </ b> A includes a bezel 121 attached to the upper surface side of the cylindrical case 111.
The bezel 121 is formed in a ring shape and is connected to the cylindrical case 111 by a fitting structure. A cover glass 122 is attached to the inner peripheral surface of the bezel 121.

A dial ring 123 is provided on the inner peripheral side of the bezel 121.
The dial ring 123 is formed in a ring shape having an outer peripheral diameter coinciding with the dial 2, and an inner peripheral portion is an inclined surface facing the dial 2.
Here, most of the radio waves received by the patch antenna 19 pass through the cover glass 122 and enter the patch antenna 19. For this reason, even if the bezel 121 and the dial ring 123 are made of metal, the patch antenna 19 does not prevent reception. However, since the bezel 121 and the dial ring 123 are arranged on the upper surface side of the patch antenna 19 and affect reception by the patch antenna 19, they are formed of a non-conductive material in the present embodiment. At this time, the bezel 121 can be made of plastic, but since it is exposed to the outside and easily scratched, the bezel 121 is made of ceramic that has high hardness and is not easily scratched.

[Circuit configuration of GPS wristwatch]
FIG. 6 is a schematic diagram showing a circuit configuration of the GPS wristwatch 1A.
As shown in FIG. 6, the GPS wristwatch 1 </ b> A includes a patch antenna 19, a filter (SAW) 192, a receiving unit 20, a control display unit 70, and a power supply unit 80.
The filter (SAW) 192 is a band pass filter, and extracts a 1.5 GHz satellite signal. In addition, an LNA (low noise amplifier) that improves reception sensitivity may be separately incorporated between the patch antenna 19 and the filter 192.
Note that a filter (SAW) 192 may be incorporated in the receiving unit 20.

The receiving unit 20 processes the satellite signal extracted by the filter 192, and includes an RF unit (Radio Frequency) 21 and a baseband unit 22.
The RF unit 21 includes a PLL circuit 211, an IF filter 212, a VCO (Voltage Controlled Oscillator) 213, an ADC (A / D converter) 214, a mixer 215, an LNA (Low Noise Amplifier) 216, an IF amplifier 217, and the like. .

The satellite signal extracted by the filter 192 is amplified by the LNA 216, mixed with the signal of the VCO 213 by the mixer 215, and down-converted to IF (Intermediate Frequency).
The IF mixed by the mixer 215 passes through an IF amplifier 217 and an IF filter 212 and is converted into a digital signal by an ADC (A / D converter) 214.

The baseband unit 22 includes a DSP (Digital Signal Processor) 221, a CPU (Central Processing Unit) 222, and an SRAM (Static Random Access Memory) 223. Further, a crystal oscillation circuit (TCXO) 23 with a temperature compensation circuit, a flash memory 24, and the like are also connected to the baseband unit 22.
The baseband unit 22 receives a digital signal from the ADC 214 of the RF unit 21, calculates a satellite signal based on the control signal, and acquires satellite time information and positioning information.
The clock signal for the PLL circuit 211 is generated from a crystal oscillation circuit (TCXO) 23 with a temperature compensation circuit.

The control display unit 70 includes a control unit (CPU) 16, a drive circuit 130 for driving the hands 32 and the like, a first time display unit 3, a second time display unit 4, a longitude display unit 5, and a latitude display unit 6. The display part which consists of etc. is provided.
The control unit 16 is configured to include an RTC (real time clock) 16A and a storage unit 16B as hardware.
The RTC 16A measures internal time information using the reference signal output from the crystal resonator 161. Therefore, the time measuring means of the present invention is constituted by the RTC 16A.
The storage unit 16B stores time data and positioning data output from the receiving unit 20. The storage unit 16B also stores time difference data corresponding to the positioning information, and the local time of the current location can be calculated from the internal time information and time difference data measured by the RTC 16A.

The GPS wristwatch 1 </ b> A of the present embodiment includes the receiving unit 20 and the control display unit 70 as described above, so that the time display can be automatically corrected based on the received signal from the GPS satellite.
The control unit 16 operates an automatic reception process that operates the reception unit 20 to perform a reception process when the internal time measured by the RTC 16A reaches a preset scheduled reception time (for example, 3 am), and an operation It is set to execute manual reception processing for performing reception processing by manual operation of the button 8 or the like. Therefore, the scheduled reception means of the present invention is configured by the control unit 16.

  The power supply unit 80 includes a charging coil 82, a charging control circuit 83, a secondary battery 14, a first regulator 84, a second regulator 85, and a voltage detection circuit 86.

The charging coil 82 supplies power to the secondary battery 14 through the charge control circuit 83 to charge the secondary battery 14.
The secondary battery 14 supplies driving power to the control display unit 70 via the first regulator 84 and supplies driving power to the receiving unit 20 via the second regulator 85.
The voltage detection circuit 86 monitors the voltage of the secondary battery 14 and outputs it to the control unit 16. Therefore, the control unit 16 can grasp the voltage of the secondary battery 14 and control the reception process.

The GPS wristwatch 1A of the present embodiment described above has the following effects.
In the present embodiment, since the patch antenna 19 is separated from the inner peripheral surface of the cylindrical case 111 by a predetermined dimension or more, even when a conductive member (for example, a metal material) is adopted for the cylindrical case 111, a conductive cylinder is used. It is possible to reduce the influence of the case 111 and prevent a decrease in reception performance. In particular, in the present embodiment, the patch antenna 19 is disposed at the center of the plane of the GPS wristwatch 1A. Therefore, the distance L can be maximized and the reception performance is the highest as compared with the case where the patch antenna 19 is disposed at another position. Can be high.
In addition, when the patch antenna 19 is disposed at a predetermined dimension or more away from the inner peripheral surface of the exterior case 11, the pointer shafts 320, 420, 520, 620, the train wheel 136, the space between the patch antenna 19 and the case 11 are arranged. Since 137 is arranged, space can be used effectively and the watch can be miniaturized.

  Further, even when the upper end position of the cylindrical case 111 is set at substantially the same height as the upper surface of the patch antenna 19, the patch antenna 19 is arranged at the plane center position of the GPS wristwatch 1A. The cylindrical case 111 can receive not only the radio waves incident from the upper direction but also the radio waves incident from the left and right oblique directions. Therefore, in the appearance of the timepiece 1A, the proportion of the metal cylindrical case 111 can be increased, and the texture of the timepiece 1A can be improved while ensuring good reception performance of the patch antenna 19.

Further, since the distance L is a dimension that allows the stepping motors 131 to 135 to be disposed, the stepping motors 131 to 135 can be disposed at any position around the patch antenna 19. In addition, the degree of freedom of the layout of the hands 32, 42, 52, 62 driven by the stepping motors 131 to 135 can be improved, and the space around the patch antenna 19 can be used effectively.
Therefore, a timepiece having a different layout of hands 32, 42, 52, and 62 can be configured with a general analog timepiece in which a pointer shaft is provided at the center of the dial plate 2, and the patch antenna 19 can be configured as in this embodiment. A plurality of pointer shafts 320, 420, 520, and 620 can be arranged around the periphery, and a multi-hand timepiece capable of displaying other longitude and latitude information in addition to time information can be easily configured.

  Further, since the stepping motors 131 to 135 as driving sources for driving the hands 32, 42, 52, 62 are arranged between the inner peripheral surface of the cylindrical case 111 and the outer peripheral surface of the patch antenna 19, the patch antenna 19 and stepping motors 131 to 135 do not overlap in the thickness direction of the GPS wristwatch 1A. For this reason, the thickness dimension of the GPS wristwatch 1 </ b> A can be reduced in this embodiment, compared to a watch having a configuration in which the patch antenna 19 and the stepping motors 131 to 135 overlap in the thickness direction. In particular, since the patch antenna 19 and the stepping motors 131 to 135 are parts having a relatively large thickness among the parts of the GPS wristwatch 1A, the GPS wristwatch 1A can be obtained by arranging these parts without overlapping in a plane. Can greatly reduce the thickness dimension of

  The patch antenna 19 is a flat antenna and is known to have a single directivity and a narrow directivity. However, the circuit board 12 on which the patch antenna 19 is disposed is a function of a ground plate. Therefore, radio waves incident from the outside can be reflected on the circuit board 12 and guided to the patch antenna 19. Therefore, not only the radio waves directly incident on the patch antenna 19 but also the patch antenna 19 can receive the radio waves reflected by the circuit board 12 and indirectly incident. Therefore, better reception performance of the patch antenna 19 can be ensured.

  Furthermore, since the patch antenna 19 receives circularly polarized radio waves, for example, if the watch has a function of correcting the time using the time information included in the satellite signal, the position information can be obtained anywhere on the earth. Radio waves from satellites can be received reliably and accurate time can always be maintained.

[Second Embodiment]
FIG. 7 is a schematic sectional view showing a GPS wristwatch 1B according to the second embodiment of the present invention. FIG. 8 is an exploded perspective view schematically showing a main part of the GPS wristwatch 1B of the present embodiment. In the description of the drawings, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In the above-described embodiment, power is supplied to the secondary battery 14 by the charging coil 82. However, in this embodiment, the solar panel 87 is used to supply power to the secondary battery 14. .
In the present embodiment, since the charging coil 82 is not used, it is not necessary to employ the second back cover portion 112B made of glass for power transfer, and the entire back cover 112 is formed of a metal material. .

The solar panel 87 is disposed between the dial 2 and the date dial 18 as shown in FIGS. The solar panel 87 has a rectangular opening 87A that exposes the patch antenna 19 at the center, and is formed in an annular shape. The opening 87 </ b> A is formed in the same plane position as the opening 171 of the base plate 17 and has the same shape and size. For this reason, the date window 2A of the dial 2 is formed at a position overlapping not only the opening 171 but also the opening 87A.
The solar panel 87 is a general solar panel, which includes four solar cells and includes a metal substrate. Each solar cell is connected in series, and four through-holes 87B through which the pointer shafts 320, 420, 520, 620 are inserted are formed on the dividing line of each solar cell, so the area of the solar cell is maximum. Limited. The solar panel 87 generates electricity by light incident from the cover glass 122 side. The power generated by the solar panel 87 is stored in the secondary battery 14 via the charge control circuit 83, as in the first embodiment. Here, the dial 2 is made of a resin material having translucency such as polycarbonate, and does not hinder the incidence of light on the solar panel 87.

Note that when the opening 87A is formed in the solar panel 87, the light receiving area is reduced correspondingly, and the power generation amount is reduced. Therefore, in terms of power generation performance, the area of the opening 87A is preferably as small as possible.
On the other hand, since the solar panel 87 includes a metal substrate, the radio wave passing through the portion other than the opening 87A is greatly attenuated. Therefore, in order to improve the reception performance of the patch antenna 19, it is preferable that the area of the opening 87A is as large as possible.
Therefore, the area of the opening 87A may be set in consideration of the above two conditions. In this embodiment, it is set to the same size as the planar area of the patch antenna 19.

According to the GPS wristwatch 1B of the present embodiment described above, in addition to the effects of the first embodiment, the following effects can be obtained.
In this embodiment, the dial 2 having translucency is used and the solar panel 87 is disposed on the back side thereof. Therefore, the power generated by the solar panel 87 is charged into the secondary battery 14 and the GPS wristwatch is used with this power. 1B can be driven. For this reason, similarly to the first embodiment, it is not necessary to replace the battery as in the case of using the primary battery, and the convenience for the user can be improved.
In addition, in the first embodiment, in order to charge by electromagnetic induction, it is necessary to dispose the non-metallic second back cover portion 112B on the back cover 112. In the second embodiment, the solar panel 87 is used. Since the battery is charged, the back cover 112 can be made of metal, and the texture of the GPS wristwatch 1B can be further improved.

  Further, since the solar panel 87 has a metal substrate, it attenuates high-frequency radio waves such as GPS satellite signals. In this embodiment, the solar panel 87 has an opening 87A. A radio wave can be incident on the patch antenna 19 through the opening 87A. Accordingly, the patch antenna 19 can receive radio waves that do not pass through the solar panel 87, and accordingly, attenuation of radio waves by the solar panel 87 can be prevented and reception performance can be improved.

  Furthermore, since the date window 2A of the dial 2 is disposed at a position that overlaps the opening 87A of the solar panel 87, there is no need to separately form an opening for exposing the date wheel 18 to the solar panel 87. As compared with the case where the opening is provided separately, the light receiving area can be increased, and the power generation performance can be improved.

[Third Embodiment]
FIG. 9 is an exploded perspective view showing a main part of a GPS wristwatch 1C according to the third embodiment of the present invention. In the description of the drawings, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In this embodiment, the patch antenna 19A is formed in a circular shape in plan view, and is different from the patch antenna 19 having a rectangular shape in plan view in the first embodiment in that the shape is different.
In addition, in this embodiment, although it was set as the structure which has the solar panel 87, the structure which does not provide the solar panel 87 may be sufficient.

  Since the patch antenna 19A is formed in a circular shape in plan view, the opening 87A of the solar panel 87 and the opening 171 of the ground plane 17 are each formed in a circular shape corresponding to the shape of the patch antenna 19A. Similarly, the antenna substrate 191A is formed in a circular shape in plan view.

According to the GPS wristwatch 1C of the present embodiment described above, in addition to the effects exhibited by the first and second embodiments, there are the following effects.
In this embodiment, since the patch antenna 19A is formed in a planar circular shape, when the planar shape is stored in the case 11, the planar rectangular patch antenna 19 of each of the above embodiments is stored. Compared with the case where it does, the space in case 11 can be utilized effectively.
The resonance frequency of the patch antenna 19A having a circular shape in plan view can be obtained by the following equation (1). On the other hand, the length of one side of the patch antenna 19 of the first and second embodiments formed in a planar rectangular shape is a half wavelength of the received radio wave. Therefore, when the patch antennas 19 and 19A are formed of the same dielectric, the planar circular patch antenna 19A and the planar rectangular patch antenna 19 have substantially the same area.

... Formula (1)
f: resonance frequency, C: speed of light, a: radius of patch antenna, εr: relative dielectric constant of dielectric

In the present embodiment, since the patch antenna 19A has a circular shape in plan view, the distance L between the patch antenna 19A and the inner peripheral surface of the cylindrical case 111 can be increased as compared with the first and second embodiments. For this reason, the freedom degree of arrangement of the stepping motors 131 to 135 and the like can be further increased. Moreover, when the said space | interval L is made into the same dimension as 1st Embodiment, the planar dimension of the cylindrical case 111 can be made small and the wristwatch 1C with GPS can be reduced in size.
Further, if the size of the solar panel 87 is the same as that of the first embodiment, the area of the opening 87A can be made smaller than that of the first embodiment, and accordingly, the light receiving area is increased and the power generation amount is increased. Can do.

[Fourth Embodiment]
FIG. 10 is a plan view of a GPS wristwatch 1D according to the fourth embodiment of the present invention. FIG. 11 is a perspective view showing the circuit board 12. FIG. 12 is a schematic cross-sectional view of a GPS wristwatch 1D. In the description of the drawings, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The dial plate 2 of each of the embodiments is formed in a circular shape in plan view, but is formed in an elliptical shape in plan view in the present embodiment. In the embodiment, one secondary battery 14 is used. However, in the present embodiment, two batteries 14A having a diameter smaller than the diameter of the secondary battery 14 are used. Is different.

  The dial 2 is formed in an elliptical shape in plan view in which the left-right diameter in FIG. 10 is longer than the up-down diameter. Therefore, the space at the 3 o'clock position and the 9 o'clock position in a general timepiece of the dial 2 is formed wider than the space at the 12 o'clock position and the 6 o'clock position. In the present embodiment, the first time display unit 3 is disposed at the 3 o'clock position and the second time display unit 4 is disposed at the 6 o'clock position, so that the first time display unit 3 is completely planar with the patch antenna 19. It is arranged at a position that does not overlap.

The shape of the dial 2 is an elliptical shape in plan view, and accordingly, the circuit board 12 and the ground plate 17 are also elliptical shape in plan view.
The diameter in the vertical direction of the movement 10 of the present embodiment is the same as the diameter in the vertical direction of the movement 10 in each of the above embodiments, and the diameter in the horizontal direction of the movement 10 in the present embodiment is the same as that of the movement 10 of each of the above embodiments. Therefore, the area of the movement 10 according to this embodiment in plan view is larger than the area of the movement 10 according to each embodiment in plan view.

As shown in FIG. 11, the circuit board 12 has two notches 12 </ b> A having a size that allows the battery 14 </ b> A to be inserted on the left and right sides of the patch antenna 19.
The notch 12A is formed at a position corresponding to the 3 o'clock position and the 9 o'clock position of the dial 2 according to the shape and size of the battery 14A, and is formed at a position that does not overlap the patch antenna 19 in plan view. .

In the present embodiment, a primary battery is used as the battery 14A. This battery 14A is connected in parallel in order to ensure the same battery capacity as the secondary battery 14 used in each of the above embodiments. Compared to the secondary battery 14, the size of the battery 14A, for example, the diameter dimension Smaller ones are used. As shown in FIGS. 11 and 12, the battery 14 </ b> A is disposed at the 3 o'clock position and the 9 o'clock position of the dial 2, and a part in the height direction is inserted into the notch 12 </ b> A of the circuit board 12.
The battery 14A in this embodiment is a primary battery. However, as in the first to third embodiments, the secondary battery 14 that is charged by the charging coil 82 or the solar panel 87 to generate power is adopted. May be.

According to the GPS wristwatch 1D of the present embodiment described above, in addition to the effects exhibited by the first embodiment, there are the following effects.
In the present embodiment, the batteries 14A having a smaller diameter are employed as compared with the secondary batteries 14 of the respective embodiments. Therefore, even if the patch antenna 19 and each battery 14A are laid out so as not to overlap in a planar manner as in the present embodiment, a significant increase in the planar size of the GPS wristwatch 1D can be prevented.
Further, since the patch antenna 19 and each battery 14A are arranged so as not to overlap each other in plan view, the thickness dimension of the GPS wristwatch 1D is larger than the case where the patch antenna 19 and the battery 14A are arranged in the thickness direction. Can be reduced.

Further, the first hand 32 of the first time display unit 3 has three hands, a first second hand 321, a first minute hand 323, and a first hour hand 322 made of metal, and the other display units 4 to 6. There are more guidelines than Therefore, when the first time display unit 3 is arranged at a position overlapping the patch antenna 19 in a plan view, the pointer 32 is more likely to overlap the patch antenna 19 than the other display units 4 to 6, and the number of times is small. The reception performance of the patch antenna 19 may be affected.
Therefore, in the present embodiment, the dial 2 is formed in an elliptical shape in plan view, and the space at the 3 o'clock position and the 9 o'clock position is formed wider than the space at the 12 o'clock position and the 6 o'clock position. The 1st time display part 3 is arrange | positioned. Thereby, the 1st time display part 3 can be arrange | positioned in the position which does not overlap with the patch antenna 19, and the influence which the 1st pointer | guide 32 has on the reception performance of the patch antenna 19 can be prevented.

[Fifth Embodiment]
FIG. 13 is a plan view of a GPS wristwatch 1E according to the fifth embodiment of the present invention. FIG. 14 is a plan view showing a needle position state during reception processing. In the description of the drawings, the same components as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted.

As in the fourth embodiment, the dial 2 of the present embodiment is formed in an elliptical shape in plan view in which the left-right diameter is longer than the vertical diameter.
Further, at the 3 o'clock position of the dial plate 2 (the crown 9 side), a first circular time display unit 3 is arranged as a first display unit. In addition, at the 10 o'clock position of the dial plate 2, a second circular time display unit 4 </ b> A is disposed as a second display unit. The second time display unit 4A of the present embodiment is a 24-hour hand in which the second hour hand 422 rotates once in 24 hours, and the scale display unit 41A is also a 24-hour scale display.

Further, at the 7-8 o'clock position of the dial plate 2, a planar circular mode state display unit 90 is arranged as a third display unit for displaying the remaining battery capacity and the received signal level.
The mode state display unit 90 is provided with a scale display unit 91 indicating a received signal level. The scale display portion 91 displays a strip-shaped scale 911 that is arcuate and gradually increases in width as it progresses in the arc direction, and the remaining battery capacity and signal level are high at the wide end. A letter “H” is displayed.
The pointer 92 of the mode state display unit 90 is made of metal like the other hands 32 and 42, displays the remaining battery capacity except during the reception operation, and displays the reception level during the reception operation.

Here, in each said embodiment, although each display part 3-6 was the substantially same magnitude | size, in this embodiment, the 1st time display part 3 is set larger than another display part. The first time display unit 3 has a size that occupies almost half the area of the dial 2, and the current time displayed on the first time display unit 3 is easily visible.
The diameters of the other display units 4A and 90 are set to about half the size of the first time display unit 3.
The plane center position (position of the pointer shaft 320) of the first time display section 3 and the plane center positions (positions of the pointer axes 420 and 95) of the second time display section 4A and the mode state display section 90 are the characters. The plates 2 are arranged so as to be shifted in the long axis direction (left-right direction).
Further, the plane center positions (the positions of the pointer shafts 420 and 95) of the second time display unit 4A and the mode state display unit 90 are arranged so as to be shifted in the minor axis direction (vertical direction) of the dial 2.

  A date display unit 7 is provided at a position surrounded by the three display units 3, 4 </ b> A, 90. The date display unit 7 includes a circular hole formed in the dial 2 and a plastic date wheel 18 disposed below the dial 2 and exposed from the hole. Further, a patch antenna 19 is disposed below the circular hole of the date display unit 7.

  The patch antenna 19 is disposed at a position where a part thereof overlaps the display units 3, 4 </ b> A, and 90 in plan. The patch antenna 19 is disposed at a position where it does not overlap the pointer shaft 320 of the first pointer 32, the pointer shaft 420 of the second pointer 42, and the pointer shaft 95 of the pointer 92 in a plane.

Specifically, the patch antenna 19 is disposed between each pointer shaft 420 and the pointer shaft 95 in the direction connecting the pointer shaft 420 and the pointer shaft 95 (the short axis direction of the dial plate 2).
Similarly, the patch antenna 19 is disposed between the pointer shafts 420 and the pointer shafts 320 in the direction connecting the pointer shafts 420 and the pointer shafts 320.
Further, the patch antenna 19 is also disposed between the pointer shafts 320 and the pointer shafts 95 in the direction connecting the pointer shafts 320 and the pointer shafts 95.
Therefore, the patch antenna 19 is disposed on the pointer shafts 95 and 420 side of the pointer shaft 320 in the major axis direction of the dial 2.
In the above description, the patch antenna 19 being disposed between the pointer axes means that a part of the patch antenna 19 is disposed on the axis connecting the two pointer axes. At this time, when assuming two lines orthogonal to an axis connecting the two pointer axes and passing through the two pointer axes, it is preferable that the patch antenna 19 is disposed between these lines. For example, the fact that the patch antenna 19 is disposed between the pointer shaft 420 and the pointer shaft 95 means that a part of the patch antenna 19 is disposed so as to overlap the axis line connecting the pointer shaft 420 and the pointer shaft 95. To do. When two lines that are orthogonal to the axis and pass through the pointer axes 420 and 95 are assumed, the patch antenna 19 is preferably disposed between these lines.

Further, below the dial 2, a stepping motor 141 that drives the first hour hand 322 and the first minute hand 323 of the first time display unit 3, a stepping motor 142 that drives the first second hand 321, and the date indicator 18 , A stepping motor 144 for driving the second hour hand 422 and the second minute hand 421 of the second time display unit 4A, and a stepping motor 145 for driving the pointer 92 of the mode state display unit 90 are disposed. ing.
Since these stepping motors 141 to 145 have the same configuration as the stepping motors 131 to 135 of the above-described embodiment, description thereof is omitted.

As shown in FIG. 13, these stepping motors 141 to 145 assume a dividing line D passing through the center of the patch antenna 19, and when the dial plate 2 is divided into two regions in a plane by the dividing line D. , Are arranged in one region.
The driving force of the stepping motor 144 is transmitted to the pointer shaft 420 via the train wheel 146 and drives the second minute hand 421 and the second hour hand 422. Similarly, the driving force of the stepping motor 145 is transmitted to the pointer shaft 95 via the wheel train 147 to drive the pointer 92. Each of these wheel trains 146 and 147 is disposed between the patch antenna 19 and the inner peripheral surface of the outer case 11 in the same manner as the pointer shafts 420 and 95.
In addition, the other stepping motors 141 to 143 also drive the first hour hand 322, the first minute hand 323, the first second hand 321 and the date indicator 18 via a train wheel (not shown). It is disposed between the antenna 19 and the inner peripheral surface of the outer case 11.

In the present embodiment, the dividing line D is set along the 12-6 o'clock direction (band extending direction) of the dial 2. The patch antenna 19 is disposed at a position where its center position is shifted in the 9 o'clock direction (the side opposite to the side where the crown 9 is provided) with respect to the plane center position of the dial 2.
For this reason, when the dial 2 is divided into two regions by the dividing line D, the area on the 3 o'clock side of the dividing line D is larger than the area on the 9 o'clock side. The stepping motors 141 to 145 are arranged in this wide area.

On the other hand, the stepping motors 141 to 145 are not provided in the 9 o'clock side region of the dividing line D. In the first embodiment, as shown in FIG. 4, stepping motors 131 to 135 are arranged around the patch antenna 19, and the patch antenna 19 is substantially surrounded by the stepping motors 131 to 135. On the other hand, in this embodiment, as shown in FIG. 13, the stepping motors 141 to 145 are not arranged in almost half of the area around the patch antenna 19, and the stepping motors 141 to 145 are The patch antenna 19 is not completely surrounded.
For this reason, in the GPS wristwatch 1E, the radio wave from the 9 o'clock direction of the dial 2 can be received by the patch antenna 19 without being affected by the stepping motors 141 to 145.

  The same movements and batteries as in the above embodiment can be used. The battery may be a primary battery, or a secondary battery 14 charged by a charging coil or a solar panel as in the first to third embodiments.

In the GPS wristwatch 1E of the fifth embodiment, the first time display unit 3 and the second time display unit 4A constitute a dual time display mechanism for displaying the time of two different regions with a time difference.
For example, the first time display unit 3 can be used as a basic clock for instructing the current time, and the second time display unit 4A can be used as a sub clock for instructing a time in another preset region.
13 and 14, the first time display unit 3 shows Japan Standard Time (JST), which is a time difference area of +9 hours with respect to Coordinated Universal Time (UTC), and the second time display unit 4A shows Coordinated Universal Time ( The time of a time difference area (for example, Thailand) of +7 hours with respect to UTC) is shown. In the example of FIG. 13, the first time display unit 3 displaying 12 hours indicates 10: 8: 36-37 pm, and the second time display unit 4A displaying 24 hours is 20: 8 ( 8: 8 pm).

Next, the reception operation in this embodiment will be described.
The GPS wristwatch 1E includes a scheduled reception mechanism (automatic reception mechanism) that performs reception processing at a predetermined time, and a manual reception mechanism that performs reception processing by a user's button operation, as in the above embodiments. ing.

That is, the control unit 16 of the GPS wristwatch 1E includes a scheduled reception mechanism that starts reception when the internal time reaches a predetermined time. Here, the internal time is measured by the RTC 16A shown in FIG.
The scheduled reception mechanism controls to start the scheduled reception at a time when the hands 32 and 42 for displaying the time do not overlap the patch antenna 19 in plan view.
That is, the control unit 16 confirms the time difference information between the hands 32 of the first time display unit 3 and the hands 42 of the second time display unit 4A, and receives the scheduled reception at a time set in advance according to the time difference information. Start.
For example, when the first hour hand 322 of the first time display unit 3 indicates a range of 8-10 o'clock and when the first minute hand 323 indicates a range of 40-50 minutes, any one of the hands 322, 322 323 may overlap the patch antenna 19 in a planar manner. Therefore, the scheduled reception time is set to a time when the first hour hand 322 instructs to be out of the range from 8 o'clock to 10 o'clock, and the first minute hand 323 is set to be out of the range of 40 minutes to 50 minutes. Specifically, it is a time when the first hour hand 322 indicates a range from 0:00 (12:00) to 8:00 (20:00), or a range from 10:00 (22:00) to 12:00 (24:00), And the 1st minute hand 323 is set to the time which designates the range from 0 minute to 40 minutes or the range from 50 minutes to 60 minutes.

  Similarly, when the second hour hand 422 of the second time display unit 4A indicates a range from 6 o'clock to 12 o'clock and when the second minute hand 421 indicates a range of 15 to 30 minutes, any one of the hands There is a possibility that 421 and 422 overlap the patch antenna 19 in a planar manner. Therefore, the scheduled reception time is set to a time when the second hour hand 422 instructs to go out of the range from 6 o'clock to 12 o'clock, and the second minute hand 421 is set to a time to instruct outside the range of 15 minutes to 30 minutes. Specifically, it is the time when the second hour hand 422 indicates the range from 0 to 6 o'clock or the range from 12:00 to 24:00, and the second minute hand 421 is within the range of 0 to 15 minutes or 30 minutes. It is set to a time indicating a range of 60 minutes.

  Therefore, the control unit 16 sets the scheduled reception time within a range where the hands 32 and 42 satisfy the above conditions. Since the time satisfying this condition varies depending on the time difference of each time displayed on the first time display unit 3 and the second time display unit 4A, the control unit 16 starts the scheduled reception at a time set in advance according to the time difference. To do. In the example illustrated in FIG. 14, the time indicated by the second time display unit 4 </ b> A is a time difference of −2 hours with respect to the time indicated by the first time display unit 3. For this reason, as an example, if the first time display unit 3 is set to receive a scheduled reception at 3:00:00 am and the second time display unit 4 is set to 10:00 am, each of the hands 32 and 42 Can be received in a state in which does not overlap the patch antenna 19 in a planar manner.

During the receiving operation, the first second hand 321 is receiving (Receive) display position (scale display unit 31).
To the position indicating the 12 o'clock direction) and stop. On the dial 2, “R” is written to indicate the display position during reception. Accordingly, the first second hand 321 does not move to a position overlapping the patch antenna 19 in a planar manner during the receiving operation.
In addition, during the receiving operation, the pointer 92 indicates the reception level within the range where the scale 911 and “H” are written, and therefore does not move to the position overlapping the patch antenna 19 in a plane. The movement of the first second hand 321 and the pointer 92 is controlled by a drive circuit 130 which is a motor drive control means.
Since the scheduled reception process is executed under such conditions, radio waves are received in a state where the hands 32, 42, and 92 are not arranged on the patch antenna 19.

On the other hand, in manual reception processing, when a user operates a button, reception processing is performed. Also in this case, since the pointer 92 is moved by the drive circuit 130 and displays the reception level, it is not arranged on the patch antenna 19. The first second hand 321 is also moved to the display position during reception by the drive circuit 130 and stops.
On the other hand, the first hour hand 322, the first minute hand 323, the second hour hand 422, and the second minute hand 421 do not move in accordance with the receiving operation. For this reason, it is preferable that the user performs a manual reception operation at a timing when these needles 322, 323, 421, 422 are not arranged above the patch antenna 19.

  When the signal is received from the GPS satellite S and the position data and time data are acquired, the control unit 16 corrects the time of the first time display unit 3 based on the information and interlocks with the second time display unit 4. Also correct the time.

According to the present embodiment as described above, the same effects as the above-described embodiments can be obtained, and the following effects can also be obtained.
Stepping motors 141 to 145 are arranged only on one side of the area around the patch antenna 19 that is divided by the dividing line D. For this reason, when receiving the satellite signal from the other area side, the patch antenna 19 can be received without being affected by the stepping motors 141 to 145, and the reception sensitivity can be improved.

Further, in the present embodiment, the patch antenna 19 is arranged so as to be shifted from the plane center of the dial plate 2 to the 9 o'clock side, so that the area of the 3 o'clock side region with respect to the dividing line D can be increased.
For this reason, the arrangement | positioning area | region of the stepper motors 141-145 can be enlarged, and it becomes possible to arrange | position five motors like this embodiment. Therefore, a multi-hand timepiece (multi-axis timepiece) having a plurality of pointer shafts can be easily configured.
Furthermore, since the first time display unit 3 is set to a size larger than that of the other display units 4A and 90, the time of the current location displayed on the first time display unit 3 can be easily viewed, and convenience is improved. Can be improved.

The patch antenna 19 is disposed between the pointer shafts 320, 420, and 95. For this reason, the patch antenna 19 can be arranged away from the inner peripheral surface of the outer case 11 by a predetermined dimension or more. Specifically, the patch antenna 19 is arranged away from the inner peripheral surface of the outer case 11 by a dimension that is a minimum value or more among the distances between the pointer shafts 320, 420, and 95 and the inner peripheral surface of the outer case 11. it can.
For this reason, regarding the reception of the satellite signal by the patch antenna 19, the influence of the metal outer case 11 can be reduced.
Further, since the pointer shafts 320, 420, and 95 and the wheel trains 146 and 147 can be arranged in the space between the patch antenna 19 and the outer case 11, the space can be used effectively, and the antenna 19 and the train wheels 146 and 147 are used. The watch can be made thinner than when the and are stacked in the thickness direction of the watch.

Further, the patch antenna 19 is disposed across the three display units 3, 4 </ b> A, 90 in a plane. For this reason, in each display part 3, 4A, 90, the area which overlaps with the patch antenna 19 planarly can be made small compared with the case where the patch antenna 19 is arrange | positioned ranging over only two display parts.
Accordingly, the range in which the hands 32, 42 and 92 can be arranged so as not to overlap the patch antenna 19 is widened, and the scheduled reception process is performed at the time when the hands 32 and 42 which indicate the time do not overlap the patch antenna 19. It can also be easily performed.

  The mode state display unit 90 displays the remaining battery capacity during normal hand movement and displays the received signal level during reception. For this reason, the user can easily grasp the remaining battery capacity and the reception level by the mode state display unit 90.

[Sixth Embodiment]
FIG. 15 is a plan view of a GPS wristwatch 1F according to the sixth embodiment of the present invention. Also in the sixth embodiment, the same components as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  The GPS wristwatch 1F includes a first time display unit 3 and a second time display unit 4A that is smaller in size than the first time display unit 3 compared to the GPS wristwatch 1E of the fifth embodiment. However, they are different in that the mode state display unit 90 is not provided. Therefore, as shown in FIG. 15, the first time display unit 3 and the second time display unit 4A are arranged on the left and right sides of the dial plate 2, and the pointer shafts 320 and 420 of the pointers 32 and 42 are arranged on the dial plate 2. It is provided on a line connecting from 3 o'clock to 9 o'clock.

Further, a battery 14 </ b> A is arranged at a position on the back side of the dial 2 where the plane position is near the 12 o'clock position of the dial 2.
Further, like the GPS wristwatch 1E, stepping motors 141 to 144 for driving the hands and date wheel are provided.

In the GPS wristwatch 1F, the patch antenna 19 is disposed in a range that overlaps the dial 2 in a plan view, and is disposed between the pointer shaft 420 and the pointer shaft 320 in the direction connecting the pointer shaft 420 and the pointer shaft 320. ing.
That is, when assuming two lines orthogonal to the axis connecting the pointer shaft 320 and the pointer shaft 420 and passing through the pointer shafts 320 and 420, the patch antenna 19 is arranged between these lines.

Further, a part of the patch antenna 19 is disposed at a position overlapping the display units 3 and 4A in a plane. Here, the area of the portion where the patch antenna 19 and the display units 3 and 4A overlap in plan is the direction in which the arrangement position of the patch antenna 19 is orthogonal to the axis connecting the pointer shafts 320 and 420, and , It becomes smaller as it moves away from the axis.
On the other hand, when moving in the same direction, the patch antenna 19 approaches the inner peripheral surface of the outer case 11.
Therefore, the arrangement position of the patch antenna 19 may be set in consideration of the distance from the inner peripheral surface of the outer case 11 and the area of the portion overlapping the display units 3 and 4A in plan view. That is, it is preferable that the separation dimension is large in terms of preventing a decrease in reception sensitivity due to the outer case 11, and the area is small in that it is easy to prevent the hands 32 and 42 from overlapping the patch antenna 19 when receiving a fixed time. preferable. As shown in the figure, when the distance between the patch antenna 19 and the outer case 11 is increased, the area is also increased. The arrangement position of the patch antenna 19 may be designed in consideration of these points.

In the dial plate 2, a display window is opened in an area where the patch antenna 19 is disposed. Two large and small circular plates (rings) are exposed in the display window.
The inner ring 18A is a date dial and displays the current date on the display window.
The outer ring 18B is a ring on which a city name indicating the time zone of the time indicated by the second time display unit 4A is displayed. In FIG. 15, TYO (Tokyo) is displayed and represents the time zone of the time displayed on the second time display unit 4A.

In the present embodiment, these two rings 18A and 18B are rotationally driven by a stepping motor 143. That is, when the rotor of the stepping motor 143 rotates in a predetermined first direction, the inner ring 18A is rotated in one direction in which the displayed date advances.
Further, when the rotor of the stepping motor 143 is rotated in the second direction opposite to the first direction, the outer ring 18B is rotated in a predetermined direction.
That is, by switching the rotation direction of the stepping motor 143, the inner and outer rings 18A and 18B are individually rotated.
In addition, another stepping motor may be arrange | positioned and it may comprise so that each ring 18A, 18B may be driven with a different motor.

  Also in the present embodiment, a dividing line D1 passing through the plane center point of the patch antenna 19 and passing from the upper left corner to the lower right corner of the patch antenna 19 is set in FIG. When divided into two regions, the stepping motors 141 to 144 are arranged in one region having a large area.

Also in this embodiment, as with the GPS wristwatch 1E, the scheduled reception process is executed at a time when the hands 32 and 42 of the display units 3 and 4A do not overlap the patch antenna 19. At this time, the first second hand 321 is moved to the 12 o'clock position and stopped.
When the manual reception operation is performed, the first second hand 321 is moved to the 12 o'clock position and stopped, and the reception operation is performed.

  Also in this embodiment, the same operational effects as those of the above embodiments can be obtained. In particular, the same effects as the GPS wristwatch 1E of the fifth embodiment are achieved.

[Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In each of the above embodiments, the GPS wristwatches 1A to 1F are described as watches, but the invention is not limited to this, and the invention may be applied to various watches such as a pocket watch.

In the first to fourth embodiments, the arrangement position of the patch antenna 19 is the plane center position of the dial 2, but the distance L between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 is a predetermined dimension. As long as it is set so as to be separated, the arrangement position of the patch antenna 19 is not limited to the plane center position as in the fifth and sixth embodiments.
Examples of the arrangement of the patch antenna 19 include the following examples shown in FIGS.

FIG. 16 is a plan view showing a GPS wristwatch 1G which is a modification of the GPS wristwatch 1A according to the first embodiment, and FIG. 17 is a rear view of the movement 10 according to the modification. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
The GPS wristwatch 1G includes a first time display unit 3 at 12 o'clock and a second time display unit 4 at 6 o'clock, a current location display unit 500 at 7-8 o'clock, and 4-5 o'clock. Is provided with a date display section 7. The current location display unit 500 and the date display unit 7 are digitally displayed on the liquid crystal panel, and the liquid crystal panel is exposed and displayed through the openings 2B and 2C formed in the dial plate 2. Here, “TYO” is displayed in alphabet in the current location display unit 500 of the present embodiment, which indicates “Tokyo”.
Since only the first and second time display units 3 and 4 are analog display types, as shown in FIG. 17, there are two gaps between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111. Stepping motors 131 and 132 are provided. The pointer shafts 320 and 420 inserted through the centers of the first and second time display units 3 and 4 are driven by the stepping motors 131 and 132, respectively.

  Moreover, as shown in FIG. 17, the 1st time display part 3 is formed larger compared with the said 1st Embodiment so that a user may visually recognize the present time easily. In this case, since the position of the pointer shaft 320 inserted through the first time display unit 3 is in the vicinity of the plane center position of the GPS wristwatch 1G, the pointer shaft 320 and the patch antenna 19 may be planarly overlapped. In addition, the patch antenna 19 cannot be arranged at the center of the plane as in the above embodiments. Therefore, the patch antenna 19 is arranged so as to be shifted from the plane center position in the 6 o'clock direction. Even in this case, the interval L is set such that the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 are separated by a predetermined dimension or more.

In each of the embodiments described above, the circuit board 12 also has a function as a ground plate, but a dedicated ground plate having a function of only the ground plate may be arranged.
In each of the embodiments described above, the interval L is formed to have a dimension in which the stepping motors 131 to 135 can be arranged, but may be formed to a dimension in which the stepping motors 131 to 135 cannot be arranged. In this case, the stepping motors 131 to 135 may be disposed at locations having a dimension larger than the distance L between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111.

  In the first to third embodiments, the date window 2A is formed at a position shifted from the center of the dial 2 in the direction of 4 to 5 o'clock. However, the present invention is not limited to this. The date window 2A may be formed at a position away from However, when the solar panel 87 is disposed above the date dial 18, it is necessary to make the date visible from the outside, for example, by forming an opening in the solar panel 87. Therefore, in the case where the solar panel 87 is provided, the date window 2A is more preferably formed at an arbitrary position within a range that overlaps the opening 171 in plan view.

  In the fourth to sixth embodiments, the patch antenna 19 has a rectangular shape in plan view, but may be formed like the circular shape in plan view of the third embodiment.

In the fourth embodiment, the notch 12A is formed on the circuit board 12 according to the shape of the battery 14A. However, the size of the circuit board 12 is reduced so that the battery 14A and the patch antenna 19 are planar. You may make it arrange | position in the position which does not overlap.
In the fourth embodiment, the second time display unit 4 having two hands is arranged at the 6 o'clock position of the general timepiece of the dial 2, but is arranged at the 9 o'clock position of the general timepiece of the dial 2. In this case, the longitude display unit 5 may be arranged at the 6 o'clock position. In this case, since the second time display unit 4 having two hands is arranged at a position where it does not completely overlap with the patch antenna 19 in a plane, the influence of the second pointer 42 on the reception performance of the patch antenna 19 is further increased. Can be prevented.

In the fourth to sixth embodiments shown in FIGS. 10 to 15, the direction along the timepiece band (12 o'clock to 6 o'clock direction on the timepiece display unit 31) is the short axis direction of the dial 2. Although configured, the direction along the timepiece band may be configured to be the long axis direction of the dial 2.
In this case, since the dial 2 has a vertically long elliptical shape, for example, the first time display unit 3 in the fifth embodiment is arranged on the 12 o'clock side of the dial 2 to display the second time display unit 4A and the mode state display. The portion 90 may be disposed on the 6 o'clock side of the dial 2.
Moreover, the planar shape of the dial 2 of the fourth to sixth embodiments is not limited to an elliptical shape, and a rectangular shape, a shape combining a rectangle and a semicircle, a shape combining a rectangle and a semi-ellipse, and the like can be used. In other words, the shape of the dial 2 may be set in consideration of the design of the watch.

In each of the above embodiments, all the pointer shafts are arranged between the patch antennas 19 and 19A and the outer case 11, but a through hole is formed in the patch antenna, and a part of the pointer shafts are connected to the through holes. You may pass through. For example, when the patch antenna is arranged at the center of the watch, a through-hole through which the pointer shaft is inserted is formed at the center of the patch antenna, and the hour hand, the minute hand, and the second hand are attached to the pointer shaft to display the current time. The first time display unit may be provided at the center of the timepiece to display the center hand.
In this case, even when the patch antenna is arranged at the plane center position of the dial, the pointer shaft and the pointer can be arranged at the plane center position of the dial. Furthermore, since the other pointer shafts can be arranged between the antenna and the case, it is possible to arrange pointers for displaying information such as the remaining battery time or information around the antenna. Accordingly, it is possible to increase variations in the layout of the pointers in the GPS wristwatch, and to realize a GPS wristwatch with high design.
Also, a through hole will be formed in the center of the patch antenna, but since the impedance in the center is low, even if a through hole is formed in the center, the effect on the antenna performance can be reduced, and the reception performance is maintained. A clock with a layout similar to a general analog clock can be realized.

In each of the above embodiments, the GPS satellite has been described as an example of the position information satellite. However, as the position information satellite of the present invention, not only the GPS satellite but also Galileo (EU), GLONASS (Russia), Hokuto (China), etc. Other global navigation satellite systems (GNSS), position information satellites that transmit satellite signals including time information such as geostationary satellites such as SBAS and quasi-zenith satellites may be used.
Further, the present invention is not limited to the reception of the satellite signal from the position information satellite, and may be used as a short-range wireless reception device for a circularly polarized wireless tag using the 900 MHz band, for example.
Furthermore, it can be used not only for receiving circularly polarized waves but also for receiving linearly polarized radio waves.
Furthermore, when an inverted F antenna is mounted as a patch antenna, it can be used for a short-range wireless communication device such as a wireless LAN or Bluetooth (registered trademark). In this embodiment, the reception function is mainly described because the application is GPS. However, it goes without saying that the device of the present invention (device incorporating an antenna) can be used for the transmission / reception function.

  DESCRIPTION OF SYMBOLS 1A-1G ... GPS wristwatch (antenna built-in watch), 2 ... Dial, 2A ... Sunlight, 10 ... Movement, 11 ... Exterior case, 12 ... Circuit board, 12A ... Notch, 14, 14A ... Battery, 18 ... Date wheel, 19, 19A ... Patch antenna (antenna), 32 ... First pointer (pointer), 42 ... Second pointer (pointer), 52 ... Pointer for displaying longitude (pointer), 62 ... Pointer for displaying latitude (Guideline), 87 ... solar panel, 87A ... opening, 87B ... through-hole, 92 ... pointer, 111 ... cylindrical case (case), 131-135, 141-145 ... stepping motor (motor), 136, 137, 146 , 147 ... wheel train, 95, 320, 420, 520, 620 ... pointer shaft.

Claims (11)

A case formed of a conductive member;
A dial formed of a non-conductive member;
A solar panel that is disposed on the back side of the dial, receives light incident from the dial, and generates power;
A date wheel disposed on the back side of the solar panel and formed of a non-conductive member;
A patch antenna disposed on the back side of the date wheel and spaced apart from the case, for receiving radio waves;
Have
In the solar panel, an opening is formed in a portion overlapping the patch antenna in a plane,
Wherein the dial, the date wheel day day window for visually recognize the display are formed, the date window is characterized in that it is formed at a position where the entire overlap in plan view to the opening antenna Built-in clock. The antenna built-in timepiece according to claim 1,
The area of the opening is the same as the planar area of the patch antenna. The antenna built-in timepiece according to claim 1 or 2,
The solar panel is composed of four solar cells. The antenna built-in timepiece according to any one of claims 1 to 3,
Having a pointer shaft,
The solar panel has a plurality of solar cells,
A timepiece with a built-in antenna, wherein a through hole for the pointer shaft is formed on a dividing line of the solar cell. An antenna built-in timepiece according to any one of claims 1 to 4,
Having a secondary battery powered by the solar panel;
The patch antenna and the secondary battery are arranged at positions where they do not overlap in a plane. An antenna built-in timepiece according to any one of claims 1 to 5,
The patch antenna receives the circularly polarized radio wave transmitted from the position information satellite. An antenna built-in timepiece according to any one of claims 1 to 6,
The patch antenna is a planar antenna in which a ground plane and an antenna electrode are arranged in parallel. The antenna built-in timepiece according to any one of claims 1 to 7,
The patch antenna is
An antenna substrate;
A dielectric laminated on the antenna substrate;
An antenna electrode formed on the dielectric;
An antenna built-in timepiece characterized by comprising: An antenna built-in timepiece according to any one of claims 1 to 6,
The patch antenna is an inverted F antenna. An antenna built-in timepiece according to any one of claims 1 to 6,
The patch antenna is a chip antenna in which an inverted F antenna is formed on a ceramic dielectric. The antenna built-in timepiece according to any one of claims 1 to 10,
2. The antenna built-in timepiece, wherein the patch antenna is disposed on a circuit board that functions as a ground plate.