JP6699769B2 - Electronic clock - Google Patents

Description

  The present invention relates to a timepiece with a built-in antenna that incorporates a patch antenna (microstrip antenna) that receives radio waves transmitted from the outside.

Conventionally, a timepiece 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 a watch with a built-in antenna, for example, there is a wristwatch having a patch antenna that receives the satellite signals (see, for example, Patent Document 1).

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

In such a wristwatch, the drive shaft of the hands for displaying the time is arranged at the central position of the plane of the dial. Further, when the case is made of metal, it is preferable that the patch antenna in the case is arranged as close to the watch surface side as possible, that is, the dial, in order to receive radio waves from the watch surface side.
Therefore, the patch antenna needs to be arranged between the drive shaft and the inner peripheral surface of the case. Therefore, the patch antenna of Patent Document 1 is arranged at a position deviated from the plane center of the case in the 12 o'clock direction of the dial.

By the way, since the patch antenna is a planar antenna, it has a merit that the thickness dimension can be reduced and an increase in the thickness dimension of the timepiece can be suppressed when incorporated into a wristwatch.
On the other hand, in order to secure the required reception performance, it is necessary to secure the size of the patch antenna in the plane direction to some extent. In recent years, patch antennas have been able to be made smaller to some extent by technological developments such as dielectric material development and wireless device sensitivity improvement, but further miniaturization was difficult to ensure the required reception performance. In addition, the plane size of the wristwatch must be limited to a size that can be worn on the wrist.
Therefore, when the patch antenna is arranged between the drive shaft arranged in the plane center of the timepiece and the inner peripheral surface of the case, the patch antenna is close to the case as shown in FIGS. Will 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 deteriorates. Therefore, 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.

Japanese Patent Publication No. 2007-526985

  By the way, in timepieces, particularly wristwatches, not only practical functionality such as timepiece display and communication but also 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 becomes large and the texture of the timepiece deteriorates.
On the other hand, if a metal case is used to improve the texture, the patch antenna is arranged close to the metal case as described above, and there is a problem that the reception characteristic is 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 dial side.
Nevertheless, the patch antenna has the same principle of operation as the slot antenna, and the gap between the top electrode end and the ground plate (antenna end) radiates the strongest radio waves, so there is metal near the side of the patch antenna. Then, the characteristics are significantly 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 that can ensure good reception performance even when a metal case is used for the exterior.

  A timepiece with a built-in antenna of the present invention includes a case formed of a conductive member, a dial formed of a non-conductive member, and a dial arranged on the back surface side of the dial to prevent light incident from the dial side. A solar panel that receives light and generates power, a date wheel that is arranged on the back side of the solar panel and is formed of a non-conductive member, and a date wheel that is placed on the back side of the date wheel and apart from the case And a patch antenna for receiving the solar panel, the solar panel has an opening formed in a portion that planarly overlaps with the patch antenna, and the dial for visually confirming the date display of the date indicator. A solar window is formed, and the solar window is formed at a position where the entire solar window overlaps the opening in a plane.

In the present invention, the patch antenna is arranged apart 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 deteriorated.
The plane of the timepiece (case) means a plane orthogonal to the thickness direction of the timepiece, and is usually a plane parallel to the dial surface.
Then, the dimension from the case to the outer peripheral surface of the antenna may be set to a dimension necessary to secure the receiving performance required for the antenna incorporated in the timepiece, in consideration of the deterioration of the characteristics caused by approaching the case.

Further, even when the upper end position of the case is set at almost the same height as the upper surface of the patch antenna, since the antenna is arranged apart from the case, the antenna is not limited to the radio wave incident from above. , It is possible to receive radio waves entering from the left and right diagonal directions without being disturbed by the case. Therefore, compared to Patent Document 1, it is possible to increase the proportion of the metal material in the appearance of the timepiece, and it is possible to improve the texture of the timepiece while ensuring good reception performance of the antenna.
Further, in the present invention, since the solar panel is arranged on the back side of the dial, the timepiece can be driven by the electric power generated by the solar panel. Therefore, 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 solar panel substrate is thin but made of metal, high frequency radio waves such as GPS satellite signals are attenuated. Therefore, if the patch antenna is covered with the solar panel, there is a high possibility that the radio wave cannot be received.
On the other hand, in the present invention, since the solar panel has the opening, the radio wave can be incident on the patch antenna through the opening. Therefore, the patch antenna can receive the radio wave that does not pass through the solar panel, and accordingly, the attenuation of the received radio wave by the solar panel can be prevented and the reception performance can be improved.
Further, since the date dial is formed of a non-conductive member and does not affect the reception by the patch antenna, it can be arranged at a position overlapping the antenna in plan view.
In addition, the date window provided on the dial for displaying the date of the date indicator, that is, the numbers from 1 to 31st, is arranged at a position that planarly overlaps with the opening of the solar panel, so that the solar Since it is not necessary to separately form an opening for visually recognizing the date indicator in the panel, the light receiving area can be increased and power generation performance can be improved as compared with the case where the opening is separately provided.
That is, when the date indicator 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 indicator in the solar panel, and the light receiving area can be increased accordingly.

Further, in the timepiece with a built-in antenna of the present invention, it is provided with a movement having a plurality of motors which are housed in the case and drive pointer hands provided at a plurality of locations, and the patch antenna is provided with a predetermined distance from an inner peripheral surface of the case. It is preferable that the pointer axes are spaced apart from each other by a size or more, and the pointer axes are disposed between the case and the patch antenna.
Here, the pointer axis is normally attached with a pointer for indicating the hour, minute, second, etc. to display the time, but it may be one for displaying other information such as day, day of the week, longitude and latitude.
Note that disposing the antenna at a predetermined distance or more from the inner peripheral surface of the case 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 at least the predetermined size. Therefore, if the antenna is arranged at the center of the plane of the case, the gap can be set to the maximum.
According to the present invention, since the pointer shaft is arranged in the space between the antenna and the case when the antenna is arranged at a predetermined distance or more from the inner peripheral surface of the case, the space can be effectively used and the timepiece can be made compact. Can be promoted.
Since the pointer shaft is a thin shaft-shaped member even if it is made of metal, even if it is arranged close to the patch antenna, it has little influence on the reception performance. If the pointer shaft is a non-conductive member such as plastic, the influence 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 in which the pointer shaft can be arranged.
Here, the dimension in which the pointer shaft can be arranged means a dimension in which at least a pointer shaft and a gear that meshes with the pointer shaft in a train wheel for driving the pointer shaft can be arranged between the antenna and the case.
In this case, since the minimum distance between the antenna and the case is the size at which the pointer shaft can be arranged, the pointer shaft can be arranged at any position around the antenna, and the degree of freedom in the pointer layout of the timepiece can be improved. ..
In the timepiece with a built-in antenna of the present invention, the area of the opening is preferably the same as the planar area of the patch antenna.
In the timepiece with a built-in antenna of the present invention, it is preferable that the solar panel includes four solar cells.
In the timepiece with a built-in antenna 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 timepiece with a built-in antenna of the present invention, at least two displays, that is, a first display part and a second display part, which are formed in a circular plane shape and in which the pointer shaft is arranged at the center position of the plane, are formed on the surface of the dial. A portion is formed, the diameter of the first display portion is larger than the diameter of the second display portion, and the patch antenna is a line connecting the pointer axis of the first display portion and the pointer axis of the second display portion. It is preferably arranged at a position overlapping with the plane.

With such a configuration, since the first display portion has a larger diameter than the second display portion, it is possible to use a large pointer attached to the pointer shaft of the first display portion. Therefore, if the time of the current location is displayed on the first display unit, the current time of the current location can be easily confirmed and the convenience can be improved.
Further, since at least the second display unit is provided in addition to the first display unit, the preset time is displayed in another area to realize the dual time display function, and the receiving sensitivity and the battery remaining amount are instructed. A status display function can be realized and convenience can be improved.
In addition, since the patch antenna is arranged at a position that planarly overlaps with the line connecting the pointer axis of the first display section and the pointer axis of the second display section, the space between the pointer axes can be effectively used. Further, since the pointer shaft of each display unit is arranged between the patch antenna and the inner peripheral surface of the case, the dimension between the patch antenna and the inner peripheral surface of the case can be secured to be equal to or larger than the radius of each display unit. Therefore, the patch antenna can be easily separated from the inner peripheral surface of the case by a predetermined dimension or more.

In the timepiece with a built-in antenna of the present invention, the dial has a shape in which the vertical and horizontal dimensions of the dial surface are different, and in addition to the first display portion and the second display portion, the dial surface has And a third display portion formed in a circular plane shape and having the pointer shaft arranged at the center position of the plane, and the diameter of the third display portion is smaller than the diameter of the first display portion. The patch antenna is arranged between the pointer axis of the second display section and the pointer axis of the third display section in a direction in which the dimension is shorter among the vertical direction and the horizontal direction of the dial, In the longitudinal direction and the lateral direction of the dial plate, it is preferable that the dials are arranged closer to the pointer shaft side of the second and third display units than the pointer shaft of the first display unit in the direction in which the dimension is longer.
Here, the dial plate of the present invention has a plane elliptical shape, a plane rectangular shape, a shape in which a rectangle and a semicircle are combined, and a shape in which a rectangle and a semiellipse (an ellipse divided into two by a long axis or a short axis) are combined. Things can be used. Therefore, for example, in the case of a plane elliptical dial, the direction with the longer dimension is the major axis direction of the ellipse, and the direction with the shorter dimension is the minor axis direction of the ellipse.
Further, the vertical direction (vertical direction) of the dial surface means the direction connecting the 12 o'clock position and the 6 o'clock position on the dial, and the lateral direction (horizontal direction) the direction connecting the 3 o'clock position and the 9 o'clock position. Means

With such a configuration, since the patch antenna is arranged between the respective pointer axes, the antenna is arranged with respect to the case at a distance larger than the distance between the case and the pointer axes. In addition, each of the pointer shafts is often arranged apart from the case by at least the length dimension of the pointer so that the pointer attached to the shaft does not come into contact with the case.
Therefore, according to the present invention, the antenna can be arranged apart from the case by the length dimension of each pointer or more, and the layout of the pointer and the antenna can be easily set.
Further, due to the positional relationship between the patch antenna and the pointer axis, the plane center position of the first display section and the plane center positions of the second display section and the third display section are displaced in the direction in which the dimension is long. The plane center positions of the second display unit and the third display unit are displaced in the direction in which the dimension is short.
For this reason, each display unit can be laid out in a well-balanced manner on the dial, the design of the watch can be improved, and the layout of the hands is different from the general analog timepiece in which the hands shaft is provided in the center of the face of the dial. Can be configured.

  According to the present invention, if the patch antenna is arranged at a predetermined distance or more from the case, and the pointer shafts provided at a plurality of positions are arranged between the case and the patch antenna, for example, the plane center of the dial of the timepiece is set. An antenna may be arranged in a portion and a display portion having the same diameter may be arranged around the antenna. Also in this case, it is possible to construct a timepiece having a pointer layout different from that of a general analog timepiece in which the pointer axis is provided at the center of the dial plate plane. Further, since it is possible to dispose a plurality of pointer axes around the antenna, it is possible to easily realize a timepiece that can display other information in addition to the time information.

  In the timepiece with a built-in antenna of the present invention, a timekeeping means for clocking the internal time, a scheduled reception means for starting reception using the patch antenna when the internal time reaches a predetermined time, and driving of the motor A plurality of pointer axes for displaying the time based on the internal time, and a pointer including a position that planarly overlaps the patch antenna in the movement trajectory is attached. A pointer axis and a pointer axis on which information other than the time is displayed and a pointer including a position that overlaps the patch antenna in a plane in a movement locus is attached. , The time display is started at a time when the hands for displaying the time do not overlap the patch antenna in a plane, and the motor drive control means is other than the time while the time reception is being performed by the time reception means. It is preferable to move the pointer for displaying the information of 1) to a position where it does not overlap the patch antenna in plan view.

According to this configuration, the time display hands are set so that the time when the hands do not overlap the patch antenna in plan view is set as the scheduled reception time. Even if a metal pointer is used, it does not affect reception at the antenna.
Also, information other than the time, for example, the pointer that displays the received signal level, etc., moves to a position that does not planarly overlap with the patch antenna by the motor drive control means during regular reception, so this pointer is not received by the antenna. It can be prevented from affecting.
Therefore, even when the metallic pointers are used, those pointers do not overlap the patch antenna in plan view at the time of reception, so that the reception sensitivity can be prevented from lowering.

It is also conceivable to move the hands for time display to a position where they do not overlap the patch antenna at the time of scheduled reception. In this case, reception cannot be started until the pointer is moved, and the time cannot be displayed during reception.
On the other hand, according to the present invention, since the hands for displaying the time do not overlap the antenna in plan while indicating the current time, it is not necessary to move the hands for displaying the time, and the current time is displayed. The receiving process can be performed quickly while displaying.

  In the timepiece with a built-in antenna of the present invention, it is preferable that the predetermined size is a size in which the motor can be arranged.

If the predetermined size, 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 size at which the motor can be arranged, the motor can be arranged at any position around the antenna. The degree of freedom in the layout of pointers driven by a motor or a motor can be improved.
Further, since a plurality of motors, which are drive sources for driving the hands, can be arranged 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 timepiece. There is no. Therefore, the thickness dimension of the timepiece can be made smaller than that of the timepiece in which the patch antenna and the motor overlap each other in the thickness direction. In particular, since the antenna and the motor are components having a relatively large thickness dimension among the components of the timepiece, the thickness dimension of the timepiece can be significantly reduced if these components can be arranged without overlapping in a plane.

  In the timepiece with a built-in antenna of the present invention, it is preferable that the timepiece 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 where they do not overlap each other in plan view. ..

  According to the present invention, since the antenna and the secondary battery do not overlap each other in a plane, the thickness dimension of the timepiece can be reduced as compared with the case where the antenna and the secondary battery are arranged in the thickness direction.

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

Here, examples of the circularly polarized wave include satellite signals transmitted from position information satellites such as GPS: Global Positioning System, Galileo (European satellite navigation system), and SBAS: Satellite-Based Augmentation System.
Therefore, since the patch antenna of the present invention receives circularly polarized radio waves, for example, any timepiece on the earth if the timepiece has a function of correcting the time using the time information included in the satellite signal. It is possible to reliably receive the radio waves from the positioning information satellite and always maintain accurate time.
In the timepiece with a built-in antenna of the present invention, it is preferable that the patch antenna is a plane antenna in which a ground plane and an antenna electrode are arranged in parallel.
In the timepiece with a built-in antenna of the present invention, it is preferable that the patch antenna has an antenna substrate, a dielectric layered on the antenna substrate, and an antenna electrode formed on the dielectric layer.
In the timepiece with a built-in antenna of the present invention, the patch antenna is preferably an inverted F antenna.
In the timepiece with a built-in antenna of the present invention, it is preferable that the patch antenna is a chip antenna in which an inverted F antenna is formed on a ceramic dielectric.
In the timepiece with a built-in antenna of the present invention, it is preferable that the patch antenna is arranged on a circuit board that functions as a ground plate.
The patch antenna is a flat plate type antenna and is known to have a single directivity and a narrow directivity. However, since the circuit board on which the patch antenna is mounted has a function of a ground plate, It is possible to reflect the radio wave entering from the antenna on the circuit board and guide it to the antenna. Therefore, the antenna can receive not only the radio wave directly incident on the antenna but also the radio wave reflected by the circuit board and indirectly incident. Therefore, the receiving performance of the antenna can be further improved.

The schematic diagram showing the GPS wristwatch concerning a 1st embodiment of the present invention. The top view of the said GPS wristwatch. The schematic sectional drawing of the said GPS wristwatch. The top view of the movement incorporated in the said GPS wristwatch. (A) is a cross-sectional view showing the structure of the patch antenna, and (B) is a characteristic view showing a radiation pattern of the patch antenna. Schematic which shows the circuit structure of the said GPS wristwatch. The schematic sectional drawing which shows the GPS wristwatch concerning 2nd Embodiment of this invention. The exploded perspective view which shows typically the principal part concerning the said 2nd Embodiment. The exploded perspective view which shows typically the principal part which concerns on 3rd Embodiment of this invention. The top view which shows the GPS wristwatch concerning 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 GPS wristwatch concerning the said 4th Embodiment. The top view which shows the GPS wristwatch concerning 5th Embodiment of this invention. The top view which shows the GPS wristwatch concerning the said 5th Embodiment. The top view which shows the GPS wristwatch concerning 6th Embodiment of this invention. The top view which shows the GPS wristwatch concerning the modification of this invention. The rear view of the movement incorporated in the GPS wristwatch according to the modification.

[First Embodiment]
Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing a GPS wristwatch 1A which is a watch with a built-in antenna 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 in a predetermined orbit, acquires satellite time information, and corrects internal time information. It is configured to be able to.
Here, the GPS satellites S are an example of the position information satellite in the present invention, and a plurality of GPS satellites S exist above the earth. Currently, about 30 GPS satellites S are in orbit.
Further, the GPS wristwatch 1A is provided with operation buttons 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 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 made of a non-conductive synthetic resin material such as polycarbonate.
The GPS wristwatch 1A is composed of scales, pointers, etc. formed on the dial 2, and has 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. Equipped with 7.

The first time display unit 3 includes a circular scale display unit 31 provided at the 6 o'clock position on the dial 2 and a first pointer 32. The scale display unit 31 includes scales divided into 60 along the outer peripheral edge.
The first pointer 32 is made of metal and is held by a triple pointer shaft 320 penetrating through the center of the first time display unit 3, and has a first second hand 321, a first minute hand 323, and a first hour hand 322. It has 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.

Like 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 scales divided into 60 along the outer peripheral edge.
The second pointer 42 is made of metal, is held by a double pointer shaft 420 that penetrates 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 the stepping motor 132 described later.

  In the above-described configuration, the first time display unit 3 and the second time display unit 4 enable so-called dual time display in which the current time in each different region is displayed. For example, when traveling or the like, the time at the destination can be displayed as the local time on the first time display unit 3, and the time in the home country of the home country can be displayed as the home time on the second time display unit 4.

The longitude display section 5 includes a circular scale display section 51 provided at the 9 o'clock position on 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 penetrates through the center of the longitude display portion 5, and is driven by a stepping motor 133 described later.
In addition, when the positioning information is not displayed on the longitude display unit 5, the battery 52 may be displayed by the pointer 52.

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

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

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

The outer 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 is provided with a first back cover part 112A made of an annular metal, and a second back cover part 112B made of glass and held by the first back cover part 112A. Then, the first case back 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 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 base plate 17, and a patch antenna 19.
Each circuit element 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 is mounted on the circuit board 12. Specifically, as shown in FIG. 3, the receiver 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 or the like radiated from a crystal oscillation circuit 23 (see FIG. 6) described later provided in the receiver 20 can be blocked by the circuit board 12. .. Therefore, as 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. Further, since the receiving unit 20 is arranged in the dead space (the space around the secondary battery 14) on the lower surface side of the circuit board 12, the space can be efficiently used. Further, since the receiver 20 is arranged at a position where it does not overlap the secondary battery 14 in plan view, the thickness of the GPS wristwatch 1A can be reduced.

The drive mechanism 13 includes the above-described stepping motors 131 to 135, a train wheel 136 and 137 that transmits the driving force of each of the stepping motors 131 to 135 to the pointer shafts 320, 420, 520, 620 and the date indicator 18. And a drive circuit 130 (see FIG. 6) that drives each of the stepping motors 131 to 135 according to 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.
The drive mechanism 13 drives the hands 32, 42, 52, 62 and the date indicator 18 to display various information such as time, longitude and latitude.

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

  The base plate 17 is made of a non-conductive plastic material and is arranged 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 indicator 18 is arranged on the main plate 17. The date dial 18 is made of a non-conductive plastic material and has an annular shape. Numbers 1 to 31 as the date display are printed on the date indicator 18. As described above, since the date indicator 18 needs to print 31 days, if the diameter is too small, one character becomes small and it becomes difficult to see.
For this reason, as shown in FIG. 4, the diameter of the date dial 18 is larger than half the diameter of the dial 2 and the base plate 17. Then, the date indicator 18 is arranged so that a part thereof is located above the opening 171 in accordance with the position of the date window 2A of the dial 2, and the number printed on the date indicator 18 is displayed on the dial 2. The date is exposed from the sun window 2A so that the date can be visually recognized from the outside.

In the present embodiment, the patch antenna 19 receives a circularly polarized radio wave transmitted from the position information satellite. Here, the principle of operation 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 to space (when used for a transmitting antenna), so that the antenna is not limited to the top surface of the antenna. The sides should be separated from the metal by about a few millimeters. The patch antenna of the present invention refers to a planar antenna in which a ground plane and antenna electrodes are arranged substantially parallel to each other, and one side resonates at a half wavelength, but one side of the antenna electrode is short-circuited with the ground plane. An inverted F antenna that resonates at 1/4 wavelength is also included. The inverse F antenna is a miniaturized antenna with the radiation electrode of a 1/2 wavelength patch antenna halved, but the operating principle regarding the emission of radio waves from the side of the antenna is the same as that of a 1/2 wavelength patch 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. The point is that the patch antenna of the present invention is a category of the operating principle of the antenna.
Specifically, as shown in FIG. 5A, the patch antenna 19 of the present embodiment has a ceramic dielectric 193 laminated on an antenna substrate 191 serving as a ground plane, and the dielectric 193 has a conductive antenna. This is a patch antenna in which the electrode 194 is integrally formed by printing silver (Ag) or the like. Note that, in FIG. 5A, a dotted line 195 indicates a radio wave received by the patch antenna 19 and an arrow 196 indicates an electric force line.
Here, in order to facilitate the frequency adjustment of the patch antenna 19, the antenna board 191 is configured as a board different from the circuit board 12 on which the receiving unit 20 which is the 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 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 the X axis, and the zenith direction is 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 thus is most likely to receive the radio wave that is vertically incident on the dial 2. Further, the directivity in the X-axis direction, which is the side surface direction of the patch antenna 19, is smaller than that in the Z-axis direction, but has a certain degree of strength. Therefore, the metal case 11 is arranged close to the side surface of the patch antenna 19. And the reception performance will be affected.
On the other hand, since the directivity of the patch antenna 19 in the −Z-axis direction, which is the lower surface direction, is weak, the metal battery 14 is arranged on the lower surface side as compared with the omnidirectional antenna having uniform directivity around. However, it does not affect the reception performance.

The patch antenna 19 is formed in a rectangular shape in a plan view, and is inserted into the rectangular opening 171 of the base plate 17. Therefore, 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 arranged 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 the present embodiment, the patch antenna 19 is arranged at the center position of the plane of the GPS wristwatch 1A, so that the interval L is set to be the largest as compared with the case where it is arranged at a position deviated from the center position of the plane. ing.

Here, the specific size of the “predetermined dimension” is that the patch antenna 19 is not blocked by the cylindrical case 111 and is received by the patch antenna 19 without being blocked by the metallic antenna. It may be set so that the reception performance required for the GPS wristwatch 1A can be secured in consideration of the range of possible incident angles of radio waves.
In the present embodiment, the dial 2 is arranged at substantially the same height as the upper surface of the cylindrical case 111, and the patch antenna 19 is arranged on the back surface of the dial 2 with the date dial 18 interposed therebetween. Therefore, the upper surface of the patch antenna 19 is located substantially on the same plane as the upper surface of the cylindrical case 111.

Between the patch antenna 19 and the inner peripheral surface of the cylindrical case 111, the stepping motors 131 to 135 of the drive mechanism 13 and the wheel trains 136 and 137 are arranged. Therefore, the "predetermined dimension" is a dimension in which these stepping motors 131 to 135 can be arranged. Further, 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 the present embodiment, the stepping motors 131 to 135, the train wheel 136 and 137, and the pointer shafts 320, 420, 520 and 620 are arranged around the patch antenna 19. In other words, the patch antenna 19 is arranged between the pointer axes 320 and 620 and between the pointer axes 420 and 520.
The pointer shafts 320, 420, 520, and 620 are usually made of metal, but since they are made of a thin pipe-shaped member or the like, even if they are arranged closer to the patch antenna 19 than the outer case 11. There is almost no effect on the reception performance. If the pointer shafts 320, 420, 520, 620 are made of a non-conductive material such as plastic, the influence on the reception performance can be further reduced.

  In the movement 10 of this embodiment, the drive mechanism 13, the patch antenna 19, the circuit board 12, and the secondary battery 14 are arranged in layers in this order from the dial 2 side to the case back 112 side. The receiver 20 and the controller 16 mounted on the circuit board 12 are arranged on the back surface side (the back cover 112 side) of the circuit board 12.

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

The GPS wristwatch 1A 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 that matches 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. Therefore, even if the bezel 121 and the dial ring 123 are made of metal, the patch antenna 19 will not be unable to receive signals. However, the bezel 121 and the dial ring 123 are arranged on the upper surface side of the patch antenna 19 and affect the reception at the patch antenna 19, and thus are formed of a non-conductive material in this embodiment. At this time, the bezel 121 may be made of plastic, but it is exposed to the outside and is easily scratched, and thus is made of ceramic having high hardness and being hard to be 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 1A 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 bandpass filter and extracts a satellite signal of 1.5 GHz. Further, an LNA (low noise amplifier) that improves reception sensitivity may be separately installed between the patch antenna 19 and the filter 192.
The 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, then 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 the IF amplifier 217 and the IF filter 212, and is converted into a digital signal by the 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. A crystal oscillator circuit (TCXO) 23 with a temperature compensation circuit, a flash memory 24, etc. are also connected to the baseband unit 22.
The baseband unit 22 receives the digital signal from the ADC 214 of the RF unit 21, calculates the satellite signal based on the control signal, and can acquire the satellite time information and the positioning information.
The clock signal for the PLL circuit 211 is generated from the crystal oscillating circuit with temperature compensation circuit (TCXO) 23.

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. And the like.
The control unit 16 includes an RTC (real time clock) 16A and a storage unit 16B as hardware.
The RTC 16A measures the internal time information using the reference signal output from the crystal oscillator 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 reception unit 20. In addition, the time difference data corresponding to the positioning information is also stored in the storage unit 16B, and the local time of the current location can be calculated from the internal time information and the time difference data measured by the RTC 16A.

Since the GPS wristwatch 1A of the present embodiment includes the receiving unit 20 and the control display unit 70 as described above, it is possible to automatically correct the time display based on the received signal from the GPS satellite.
The control unit 16 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, 3:00 am) and an operation. It is set to execute a manual reception process in which the reception process is performed by a 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 control the reception process by grasping the voltage of the secondary battery 14.

The GPS wristwatch 1A of this 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 used for the cylindrical case 111, the conductive cylinder It is possible to reduce the influence of the case 111 and prevent deterioration of reception performance. In particular, in the present embodiment, the patch antenna 19 is arranged at the center position of the plane of the GPS wristwatch 1A, so that the interval L can be maximized and the reception performance is the most, as compared with the case where it is arranged at other positions. Can be higher
Further, when the patch antenna 19 is arranged at a predetermined distance or more from the inner peripheral surface of the outer case 11, the pointer shafts 320, 420, 520, 620 and the train wheel 136 are provided in the space between the patch antenna 19 and the case 11. Since 137 is arranged, the space can be effectively used and the timepiece can be downsized.

  Even when the upper end position of the cylindrical case 111 is set to 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. Not only the radio wave incident from the upper direction but also the radio wave incident from the left and right diagonal directions can be received without being blocked by the cylindrical case 111. Therefore, in the appearance of the timepiece 1A, the proportion of the metal cylindrical case 111 can be increased, and while the good reception performance of the patch antenna 19 is ensured, the texture of the timepiece 1A can be improved.

Further, since the interval L has a dimension such that the stepping motors 131 to 135 can be arranged, the stepping motors 131 to 135 can be arranged at any position around the patch antenna 19, and the stepping motors 131 to 135 can be arranged. The degree of freedom in 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 effectively used.
Therefore, a timepiece having a layout of the hands 32, 42, 52, 62 different from that of a general analog timepiece in which the pointer shaft is provided in the plane center of the dial 2 can be configured. It is also possible to arrange a plurality of pointer axes 320, 420, 520, 620 around, and it is possible to easily configure a multi-hand timepiece capable of displaying other longitude and latitude information in addition to time information.

  Further, since the stepping motors 131 to 135 which are drive sources for driving the hands 32, 42, 52 and 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 the stepping motors 131 to 135 do not overlap in the thickness direction of the GPS wristwatch 1A. Therefore, in the present embodiment, the thickness of the GPS wristwatch 1A can be reduced as compared with a timepiece having a configuration in which the patch antenna 19 and the stepping motors 131 to 135 overlap each other in the thickness direction. In particular, since the patch antenna 19 and the stepping motors 131 to 135 are components having a relatively large thickness among the components of the GPS wristwatch 1A, if these components are arranged without overlapping in a plane, the GPS wristwatch 1A can be provided. The thickness dimension of can be significantly reduced.

  The patch antenna 19 is a flat plate type 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 arranged functions as a ground plate. Therefore, the radio wave entering from the outside can be reflected on the circuit board 12 and guided to the patch antenna 19. Therefore, not only the radio wave directly incident on the patch antenna 19 but also the radio wave reflected by the circuit board 12 and indirectly incident on the patch antenna 19 can be received. Therefore, better reception performance of the patch antenna 19 can be secured.

  Further, since the patch antenna 19 receives circularly polarized radio waves, for example, if the clock 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 reliably received, 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 this embodiment. In the description of the drawings, the same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.
In the above-described embodiment, power is supplied to the secondary battery 14 by the charging coil 82, but this embodiment is different in that the solar panel 87 is used to supply power to the secondary battery 14. ..
Further, in the present embodiment, since the charging coil 82 is not used, it is not necessary to employ the second glass back cover 112B for power transfer, and the back cover 112 is entirely made of a metal material. ..

The solar panel 87 is arranged between the dial 2 and the date indicator 18, as shown in FIGS. The solar panel 87 has a rectangular opening 87A that exposes the patch antenna 19 in the central portion and is formed in an annular shape. The opening 87A is formed so as to have the same shape and size at the same plane position as the opening 171 of the main plate 17. Therefore, the date window 2A of the dial 2 is formed not only in the opening 171 but also in the opening 87A in a plane.
The solar panel 87 is a general solar panel, is composed of four solar cells, and is provided with a metal substrate. Since each solar cell is connected in series and four through holes 87B into which the pointer axes 320, 420, 520, 620 are inserted are formed on the dividing line of each solar cell, the area of the solar cell is maximum. Limited. This solar panel 87 generates electricity by the light incident from the cover glass 122 side. The electric power generated by the solar panel 87 is stored in the secondary battery 14 via the charging control circuit 83 as in the first embodiment. Here, the dial 2 is made of a translucent resin material such as polycarbonate and does not prevent the light from entering the solar panel 87.

If the opening 87A is formed in the solar panel 87, the light receiving area is reduced by that amount, and the amount of power generation is reduced. Therefore, from the viewpoint 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, radio waves passing through other than the opening 87A are 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 be as large as possible.
Therefore, the area of the opening 87A may be set in consideration of the above two conditions. In this embodiment, the size is set to be the same 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 obtained by the first embodiment, there are the following effects.
In the present embodiment, the translucent dial plate 2 is used, and the solar panel 87 is arranged on the back side thereof. Therefore, the secondary battery 14 is charged with the electric power generated by the solar panel 87, and the GPS wristwatch is supplied with this electric power. 1B can be driven. Therefore, similar 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.
Moreover, in the first embodiment, in order to charge by electromagnetic induction, it is necessary to dispose the non-metal second back cover portion 112B on the back cover 112, but 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. However, in the present embodiment, the solar panel 87 has the opening 87A. Radio waves can be incident on the patch antenna 19 through the opening 87A. Therefore, the patch antenna 19 can receive the radio wave that does not pass through the solar panel 87, and accordingly, the attenuation of the radio wave by the solar panel 87 can be prevented and the reception performance can be improved.

  Further, since the date window 2A of the dial 2 is arranged at a position which overlaps with the opening portion 87A of the solar panel 87 in plan view, it is not necessary to separately form an opening for exposing the date indicator 18 in the solar panel 87. As compared with the case where the opening is separately provided, 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 will be designated by the same reference numerals and the description thereof will be omitted.
In the present embodiment, the patch antenna 19A is formed in a circular shape in plan view, and differs from the patch antenna 19 having a rectangular shape in plan view of the first embodiment in that the shape is different.
Although the solar panel 87 is provided in the present embodiment, the solar panel 87 may be omitted.

  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 base plate 17 are formed in a circular shape corresponding to the shape of the patch antenna 19A. Further, the antenna substrate 191A is also formed in a circular shape in plan view.

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

・・・式（１）
ｆ：共振周波数、Ｃ:光速、ａ：パッチアンテナの半径、εr：誘電体の比誘電率

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

In the present embodiment, the patch antenna 19A has a circular shape in plan view, so that the distance L between the patch antenna 19A and the inner peripheral surface of the cylindrical case 111 can be made larger than in the first and second embodiments. Therefore, the degree of freedom in arranging the stepping motors 131 to 135 and the like can be further increased. When the distance L is the same as that of the first embodiment, the plane size of the cylindrical case 111 can be reduced, and the GPS wristwatch 1C can be downsized.
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, so that the light receiving area is correspondingly increased and the amount of power generation is increased. You can

[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 sectional view of the GPS wristwatch 1D. In the description of the drawings, the same components as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted.
The dial 2 of each of the above-described embodiments was formed in a circular shape in plan view, but in the present embodiment, it is formed in an elliptical shape in plan view. Further, in the above-described embodiment, one secondary battery 14 is used, but in the present embodiment, two batteries 14A having a diameter smaller than that of the secondary battery 14 are used. Be different.

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

The dial 2 has an elliptical shape in plan view, and accordingly, the circuit board 12 and the base plate 17 also have an elliptical shape in plan view.
The vertical diameter of the movement 10 of the present embodiment is the same as the vertical diameter of the movement 10 of each of the above embodiments, and the horizontal diameter of the movement 10 of the present embodiment is the movement 10 of each of the above embodiments. Since the diameter is larger than the diameter in the left-right direction, the area of the movement 10 of the present embodiment in plan view is larger than the area of the movement 10 of each of the above-described embodiments in plan view.

As shown in FIG. 11, the circuit board 12 has two cutouts 12A on the left and right sides of the patch antenna 19 having a size that allows the battery 14A to be inserted therethrough.
The cutouts 12A are formed at positions 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 are formed at positions not overlapping the patch antenna 19 in plan view. ..

As the battery 14A, a primary battery is used in this embodiment. The batteries 14A are connected in parallel in order to secure the same battery capacity as the secondary battery 14 used in each of the above-described embodiments, and the size of the battery 14A, for example, the diameter dimension, is larger than that of the secondary battery 14. A small one is used. Then, as shown in FIGS. 11 and 12, the battery 14A is arranged 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 cutout portion 12A of the circuit board 12.
Although the battery 14A in the present embodiment is a primary battery, the secondary battery 14 that is charged by the charging coil 82 and the solar panel 87 to generate electric power is adopted as in the first to third embodiments. You may.

The GPS wristwatch 1D of the present embodiment described above has the following effects in addition to the effects of the first embodiment.
In this embodiment, each battery 14A having a smaller diameter than that of the secondary battery 14 of each of the above-described embodiments is used. Therefore, even if the patch antenna 19 and the batteries 14A are laid out so as not to overlap each other in a plane as in the present embodiment, it is possible to prevent a large increase in the plane size of the GPS wristwatch 1D.
Further, since the patch antenna 19 and the batteries 14A are arranged so as not to overlap each other in plan view, the thickness dimension of the GPS wristwatch 1D is larger than that in the case where the patch antenna 19 and the batteries 14A are arranged in the thickness direction. Can be made smaller.

Further, the first pointer 32 of the first time display unit 3 has three hands of 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 are provided. There are more pointers than in. Therefore, when the first time display unit 3 is arranged at a position where it overlaps with the patch antenna 19 in plan view, the possibility that the pointer 32 overlaps with the patch antenna 19 becomes higher than that of the other display units 4 to 6, which is small. However, 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 a plan view, the spaces at the 3 o'clock position and the 9 o'clock position are formed wider than the spaces at the 12 o'clock position and the 6 o'clock position, and the 3 o'clock position of this wide space is set. The first time display unit 3 is arranged at. As a result, the first time display unit 3 can be arranged at a position where it does not overlap the patch antenna 19 in plan view, and the influence of the first pointer 32 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 the reception processing. In the description of the drawings, the same components as those in each of the above-described embodiments are designated by the same reference numerals, and the description thereof will be omitted.

Similar to the fourth embodiment, the dial 2 of the present embodiment is formed in an elliptical shape in plan view in which the diameter in the left-right direction is longer than the diameter in the up-down direction.
At the 3 o'clock position on the dial 2 (on the crown 9 side), a first circular time-of-day display unit 3 is arranged as a first display unit. Further, at 10 o'clock on the dial 2, a second time display portion 4A having a circular plane shape is arranged as a second display portion. The second time display section 4A of the present embodiment is a 24-hour hand in which the second hour hand 422 makes one rotation in 24 hours, and the scale display section 41A is also a 24-hour scale display.

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

Here, in each of the above-described embodiments, the display units 3 to 6 have substantially the same size, but in the present embodiment, the first time display unit 3 is set to be larger than the other display units. The first time display unit 3 is sized to occupy almost half the area of the dial 2, so that the current time displayed on the first time display unit 3 is easily visible.
The diameters of the other display parts 4A and 90 are set to about half the size of the first time display part 3.
The plane center position of the first time display unit 3 (position of the pointer shaft 320) and the plane center position of the second time display unit 4A and the mode state display unit 90 (positions of the pointer shafts 420 and 95) are the characters described above. The plates 2 are arranged so as to be displaced in the long axis direction (left and right direction).
Further, the plane center positions of the second time display portion 4A and the mode state display portion 90 (positions of the pointer shafts 420 and 95) are displaced in the minor axis direction (vertical direction) of the dial plate 2.

  A date display portion 7 is provided at a position surrounded by these three display portions 3, 4A and 90. The date display portion 7 includes a circular hole formed in the dial 2 and a plastic date wheel 18 arranged below the dial 2 and exposed from the hole. Further, a patch antenna 19 is arranged below the circular hole of the date display portion 7.

  The patch antenna 19 is arranged at a position where a part of the patch antenna 19 overlaps the display units 3, 4A and 90 in a plane. Further, the patch antenna 19 is arranged at a position where it does not overlap with 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 plan view.

Specifically, the patch antenna 19 is arranged between the pointer axes 420 and the pointer axes 95 in the direction connecting the pointer axes 420 and the pointer axes 95 (short axis direction of the dial 2 ).
Similarly, the patch antenna 19 is also arranged between the pointer axes 420 and 320 in the direction connecting the pointer axes 420 and 320.
Further, the patch antenna 19 is arranged between the pointer shafts 320 and the pointer shafts 95 also in the direction connecting the pointer shafts 320 and the pointer shafts 95.
Therefore, the patch antenna 19 is arranged closer to the pointer shafts 95 and 420 than the pointer shaft 320 in the major axis direction of the dial 2.
It should be noted that, in the above, the fact that the patch antenna 19 is arranged between the pointer axes means that a part of the patch antenna 19 is arranged on the axis connecting the two pointer axes. At this time, when it is assumed that there are two lines which are orthogonal to the axis connecting the two pointer axes and pass through the two pointer axes, respectively, the patch antenna 19 is preferably arranged between these lines. For example, the fact that the patch antenna 19 is arranged between the pointer shaft 420 and the pointer shaft 95 means that a part of the patch antenna 19 is arranged so as to overlap the axis 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, it is preferable that the patch antenna 19 be arranged 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 143 for driving the second time display section 4A, a stepping motor 144 for driving the second hour hand 422 and the second minute hand 421 of the second time display section 4A, and a stepping motor 145 for driving the pointer 92 of the mode state display section 90. ing.
Since these stepping motors 141 to 145 have the same configurations as the stepping motors 131 to 135 of the above-mentioned embodiment, the description thereof will be 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 dividing line D divides the dial 2 into two areas in a plane. , Located in one area.
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 train wheel 147 to drive the pointer 92. Each of these wheel trains 146 and 147 is arranged between the patch antenna 19 and the inner peripheral surface of the outer case 11, similarly to the pointer shafts 420 and 95.
Further, 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 arranged between the antenna 19 and the inner peripheral surface of the outer case 11.

In the present embodiment, the division line D is set along the 12-6 o'clock direction of the dial 2 (extension direction of the band). Further, the patch antenna 19 is arranged such that its center position is displaced from the center position of the plane of the dial 2 in the 9 o'clock direction (the side opposite to the side on which the crown 9 is provided).
Therefore, when the dial 2 is planarly divided into two areas by the division line D, the area on the 3 o'clock side of the division line D has a larger area 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 area of the section line D. In the first embodiment, as shown in FIG. 4, the 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 the present 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 It does not completely surround the patch antenna 19.
Therefore, 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.

  As the movement, battery and the like of this embodiment, the same ones as in the above-mentioned embodiment can be used. The battery may be a primary battery, or the secondary battery 14 that is charged by a charging coil or a solar panel may be adopted 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 that displays the time in two different regions with a time difference.
For example, the first time display unit 3 can be used as a basic timepiece that indicates the current time, and the second time display unit 4A can be used as a sub timepiece that indicates the time of another preset region. 13 and 14, the first time display section 3 shows Japan Standard Time (JST), which is a time difference area of +9 hours from the Coordinated Universal Time (UTC), and the second time display section 4A shows the Coordinated Universal Time ( It shows the time in a time zone of +7 hours (for example, Thailand) with respect to UTC. In the example of FIG. 13, the first time display unit 3 displaying 12 hours indicates 10:08:36 to 37 seconds, and the second time display unit 4A displaying 24 hours displays 20:8 ( 8:8 pm).

Next, the receiving 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-described 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 the scheduled reception to start 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 performs the scheduled reception at the time preset according to the time difference information. Start.
For example, when the first hour hand 322 of the first time display unit 3 indicates the range of 8 to 10 o'clock and when the first minute hand 323 indicates the range of 40 to 50 minutes, one of the hands 322, 322 is displayed. 323 may overlap the patch antenna 19 in a plane. Therefore, the scheduled reception time is set to a time at which the first hour hand 322 indicates the outside of the range from 8 o'clock to 10 o'clock and the first minute hand 323 indicates the outside of the range of 40 minutes to 50 minutes. Specifically, it is the time when the first hour hand 322 indicates the range from 0:00 (12:00) to 8:00 (20:00), or the range from 10:00 (22:00) to 12:00 (24). In addition, the first minute hand 323 is set to a time indicating a range of 0 minutes to 40 minutes or a range of 50 minutes to 60 minutes.

  Similarly, when the second hour hand 422 of the second time display unit 4A indicates the range from 6 o'clock to 12 o'clock and when the second minute hand 421 indicates the range from 15 to 30 minutes, either one of the hands 421 and 422 may overlap the patch antenna 19 in a plane. Therefore, the scheduled reception time is set to the time at which the second hour hand 422 indicates the outside of the range from 6 o'clock to 12 o'clock and the second minute hand 421 indicates the outside of the range of 15 to 30 minutes. Specifically, it is the time when the second hour hand 422 indicates the range from 0 o'clock to 6 o'clock, or the range from 12 o'clock to 24 o'clock, and the second minute hand 421 shows the range from 0 to 15 minutes or 30 minutes. The time is set to indicate the range of 60 minutes.

  Therefore, the control unit 16 sets the scheduled reception time within the range in which the hands 32 and 42 satisfy the above-mentioned conditions. The time that satisfies this condition varies depending on the time difference between the times displayed on the first time display unit 3 and the second time display unit 4A, so the control unit 16 starts scheduled reception at the time preset according to the time difference. To do. In the example shown in FIG. 14, the time indicated by the second time display unit 4A is set to −2 hours with respect to the time indicated by the first time display unit 3. Therefore, as an example, if the first time display unit 3 is set to perform the scheduled reception at the timing of 3:00 am and the second time display unit 4 is set to the timing of the time of 1:00 am, the hands 32 and 42 are set. It is possible to perform the receiving operation in a state in which the patch antenna 19 does not overlap the patch antenna 19 in plan view.

During the reception operation, the first second hand 321 moves to the receiving (Receive) display position (the position indicating the 12 o'clock direction on the scale display unit 31) and stops. The dial 2 is marked with "R" to indicate the display position during reception. Therefore, the first second hand 321 does not move to a position where it overlaps the patch antenna 19 in a plane during the reception operation.
Further, the pointer 92 also indicates the reception level in the range in which the scale 911 and “H” are written during the reception operation, and therefore does not move to a position where it overlaps with the patch antenna 19 in plan view. 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 regular reception process is executed under such conditions, the radio waves are received in a state where the hands 32, 42, 92 are not arranged on the patch antenna 19.

On the other hand, in the manual reception process, when the user operates the button, the reception process is performed. Also in this case, since the pointer 92 is moved by the drive circuit 130 to display the reception level, it is not arranged on the patch antenna 19. Further, the first second hand 321 is also moved to the display position during reception by the drive circuit 130 and stopped.
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 according to the receiving operation. Therefore, the user preferably performs the manual reception operation at the timing when the 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 the time data are acquired, the control unit 16 corrects the time of the first time display unit 3 based on the information, and the second time display unit 4 is interlocked with the time. Also correct the time.

According to the present embodiment as described above, it is possible to obtain the same effects as those of the above-described embodiments, and also obtain the following effects.
The stepping motors 141 to 145 are arranged around the patch antenna 19 in only one region divided by the division line D. Therefore, the patch antenna 19 can receive the satellite signal from the other area side without being affected by the stepping motors 141 to 145, and the receiving sensitivity can be improved.

Further, in this embodiment, since the patch antenna 19 is arranged so as to be displaced from the plane center of the dial 2 to the 9 o'clock side, the area of the 3 o'clock side with respect to the dividing line D can be increased.
Therefore, the arrangement area of the stepping motors 141 to 145 can be enlarged, and five motors can be arranged as in the present embodiment. Therefore, a multi-hand timepiece (multi-axis timepiece) having a plurality of pointer axes can be easily constructed.
Furthermore, since the first time display unit 3 is set to have a larger size than the other display units 4A and 90, the time of the current location displayed on the first time display unit 3 can be easily visually recognized, which is convenient. Can be improved.

The patch antenna 19 is arranged between the pointer axes 320, 420, and 95. Therefore, the patch antenna 19 can be arranged at a predetermined distance or more from the inner peripheral surface of the outer case 11. Specifically, the patch antenna 19 is arranged apart from the inner peripheral surface of the outer case 11 by a dimension that is the minimum value in the distance between the pointer axes 320, 420, 95 and the inner peripheral surface of the outer case 11. it can.
Therefore, the influence of the metallic outer case 11 on the reception of satellite signals by the patch antenna 19 can be reduced.
Further, since the pointer shafts 320, 420, 95 and the train wheel 146, 147 can be arranged in the space between the patch antenna 19 and the outer case 11, the space can be effectively used, and the antenna 19 and the train wheel 146, 147 can be effectively used. The watch can be made thinner than when and are stacked in the thickness direction of the watch.

Furthermore, the patch antenna 19 is arranged so as to straddle the three display units 3, 4A and 90 in a plane. Therefore, in each of the display units 3, 4A, and 90, the area where the patch antenna 19 overlaps in plan view can be made smaller than in the case where the patch antenna 19 is arranged only over two display units.
Therefore, the range in which the pointers 32, 42, and 92 can be arranged so as not to overlap the patch antenna 19 in a plane becomes wider, and the scheduled reception processing is performed at the time when the pointers 32 and 42 indicating the time do not overlap with the patch antenna 19. It can also be done easily.

  The mode status display unit 90 displays the remaining battery level during normal hand movement, and displays the received signal level during reception. Therefore, the user can easily understand the battery remaining capacity and the reception level by the mode status 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 in each of the above embodiments are designated by the same reference numerals, and the description thereof will be omitted.

  The GPS wristwatch 1F includes a first time display unit 3 and a second time display unit 4A smaller in size than the first time display unit 3 as compared with the GPS wristwatch 1E of the fifth embodiment. However, the difference is that the mode state display section 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 hands 32 and 42 are respectively arranged on the dial plate 2. It is provided on the line connecting 3 o'clock to 9 o'clock.

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

In the GPS wristwatch 1F, the patch antenna 19 is arranged in a range overlapping the dial 2 in a plane, and is arranged between the pointer axes 420 and 320 in the direction connecting the pointer axes 420 and 320. ing.
That is, assuming two lines that are orthogonal to the axis connecting the pointer axes 320 and 420 and pass through the pointer axes 320 and 420, respectively, the patch antenna 19 is arranged between these lines.

Further, a part of the patch antenna 19 is arranged at a position where it overlaps the respective display units 3 and 4A in plan view. Here, the area of the portion where the patch antenna 19 and the display units 3 and 4A overlap in a plane is a direction in which the arrangement position of the patch antenna 19 is orthogonal to the axis connecting the pointer axes 320 and 420, and , 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 that overlaps the display portions 3 and 4A in plan view. That is, it is preferable that the distance is large in order to prevent the reception sensitivity from being reduced by the outer case 11, and the area is preferably small because it is easy to prevent the pointers 32 and 42 from overlapping the patch antenna 19 at the time of receiving the scheduled time. preferable. Then, as shown in the figure, if the distance between the patch antenna 19 and the outer case 11 is increased, the area also increases. The arrangement position of the patch antenna 19 may be designed in consideration of these points.

A display window is opened in a region of the dial 2 where the patch antenna 19 is arranged. Two large and small annular plates (rings) are exposed in this display window.
The inner ring 18A is a date indicator and displays the present day in the display window.
The outer ring 18B is a ring on which a city name indicating the time zone at the time indicated by the second time display unit 4A is displayed. In FIG. 15, TYO (Tokyo) is displayed, indicating 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 the stepping motor 143. That is, when the rotor of the stepping motor 143 rotates in the predetermined first direction, the inner ring 18A rotates 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 one direction.
That is, the inner and outer rings 18A and 18B are individually rotated by switching the rotation direction of the stepping motor 143.
It should be noted that another stepping motor may be arranged and each ring 18A, 18B may be driven by a different motor.

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

Also in the present embodiment as described above, similarly to the GPS wristwatch 1E, the scheduled reception processing 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 the present embodiment, it is possible to obtain the same effects as those of the above-described embodiments. In particular, the same operational effects as the GPS wristwatch 1E of the fifth embodiment are obtained.

[Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within the scope of achieving the object of the present invention are included in the present invention.
In each of the above-described embodiments, the GPS wristwatch 1A to 1F is described as the timepiece, but the present invention is not limited to this and may be applied to various timepieces such as pocket watches.

In the first to fourth embodiments, the arrangement position of the patch antenna 19 is the center position of the plane of the dial plate 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 described above, it is sufficient that the patch antennas 19 are set to be separated from each other, and 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 such 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 of the first embodiment are designated by the same reference numerals and the description thereof will be 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 position display unit 500 at 7 to 8 o'clock, and a 4 to 5 o'clock direction. Is equipped with a date display section 7. The current position display section 500 and the date display section 7 are digitally displayed on the liquid crystal panel, and the liquid crystal panel is exposed through the openings 2B and 2C formed in the dial 2. Here, "TYO" is displayed in the alphabet on the current position display portion 500 of the present embodiment, which indicates "Tokyo".
Since only the first and second time display parts 3 and 4 are of the analog display type, as shown in FIG. 17, two parts are provided between the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111. The stepping motors 131 and 132 are provided. As for the pointer shafts 320 and 420 inserted through the centers of the first and second time display portions 3 and 4, the pointers 32 and 42 are driven by the stepping motors 131 and 132.

  Further, as shown in FIG. 17, the first time display section 3 is formed larger than that in the first embodiment so that the user can easily recognize the current time. In this case, since the position of the pointer shaft 320 inserted into the first time display unit 3 is near the center position of the GPS wristwatch 1G in the plane, there is a possibility that the pointer shaft 320 and the patch antenna 19 overlap each other in a plane. Therefore, the patch antenna 19 cannot be arranged at the center position of the plane as in the above embodiments. Therefore, the patch antenna 19 is displaced from the center position of the plane in the 6 o'clock direction. Also in this case, the interval L is set so that the outer peripheral surface of the patch antenna 19 and the inner peripheral surface of the cylindrical case 111 are separated from each other by a predetermined dimension or more.

In each of the above embodiments, the circuit board 12 also functions as a ground plate, but a dedicated ground plate having only the function of the ground plate may be arranged.
In each of the above-described embodiments, the interval L is formed to have a size in which the stepping motors 131 to 135 can be arranged, but it may be formed to a size in which the stepping motors 131 to 135 cannot be arranged. In this case, the stepping motors 131 to 135 may be arranged at locations having a size 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 deviated from the center of the dial 2 in the direction of 4 to 5 o'clock, but the present invention is not limited to this, and the outside of the opening 171 is formed. The date window 2A may be formed at a position deviated from. However, when the solar panel 87 is arranged above the date indicator 18, it is necessary to form an opening in the solar panel 87 so that the date can be visually recognized from the outside. Therefore, in the case where the solar panel 87 is provided, it is more preferable that the date window 2A be formed at an arbitrary position within a range that overlaps with the opening 171 in plan view.

  Although the patch antenna 19 has a rectangular shape in plan view in the fourth to sixth embodiments, it may be formed in a circular shape in plan view according to the third embodiment.

In the fourth embodiment, the circuit board 12 has the notch 12A formed 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 planarly arranged. You may make it arrange|position in the position which does not overlap.
Further, in the fourth embodiment, the second time display portion 4 having two hands is arranged at the 6 o'clock position of the general dial of the dial 2, but it is arranged at the 9 o'clock position of the general dial of the dial 2. However, in this case, the longitude display portion 5 may be arranged at the 6 o'clock position. In this case, the second time display unit 4 having two hands is arranged at a position where it does not completely overlap the patch antenna 19 in a plane, so that the second pointer 42 exerts more influence on the reception performance of the patch antenna 19. It can be prevented.

In the fourth to sixth embodiments shown in FIGS. 10 to 15, the direction along the band of the timepiece (the 12 o'clock to 6 o'clock direction on the timepiece scale display portion 31) is the minor axis direction of the dial 2. However, the direction along the band of the timepiece may 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 at the 12 o'clock side of the dial 2, and the second time display unit 4A and the mode status display. The portion 90 may be arranged on the dial 2 at the 6 o'clock side.
Further, the plane shape of the dial plate 2 of the fourth to sixth embodiments is not limited to an elliptical shape, and a rectangular shape, a shape in which a rectangle and a semicircle are combined, a shape in which a rectangle and a semielliptic shape are combined, and the like can be used. That is, the shape of the dial 2 may be set in consideration of the watch design.

In each of the above-mentioned embodiments, all the pointer axes 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 axes is provided in this through hole. You may insert it in. For example, when the patch antenna is arranged at the center of the clock, a through hole is formed in the center of the patch antenna for inserting the pointer shaft, and the hour hand, minute hand, and second hand are attached to the pointer shaft to display the current time. The first time display section may be provided at the center of the clock 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. Further, since the other pointer axes can be arranged between the antenna and the case, it is possible to arrange the pointers for displaying the time of different areas and displaying information such as the remaining battery level around the antenna. Therefore, it is possible to increase variations in the layout of the hands in the GPS wristwatch, and it is possible to realize a GPS wristwatch with high design.
In addition, although a through hole will be formed in the center of the patch antenna, the impedance at the center is low, so even if a through hole is formed in the center, the effect on the antenna performance can be reduced and reception performance is maintained. Until now, it is possible to realize a clock having a layout similar to that of a general analog clock.

In each of the above-described embodiments, the GPS satellite has been described as an example of the position information satellite, but the position information satellite of the present invention is not limited to the GPS satellite, but may be Galileo (EU), GLONASS (Russia), or Beidou (China). It may be another Global Navigation Satellite System (GNSS) or a position information satellite that transmits satellite signals including time information such as geostationary satellites such as SBAS and quasi-zenith satellites.
Further, the present invention is not limited to such reception of a satellite signal from a position information satellite, but may be used as a short-distance wireless reception device of a circularly polarized wireless tag using the 900 MHz band, for example.
Further, the invention can be used not only for receiving circularly polarized waves but also for receiving radio waves of linearly polarized waves.
Furthermore, when an inverted F antenna is installed as a patch antenna, it can be used for short-range wireless communication devices such as wireless LAN and Bluetooth (registered trademark). Further, in the present embodiment, the receiving function is mainly described because the application is GPS, but it goes without saying that the device of the present invention (device having an antenna built therein) can be used for the transmitting and receiving function.

  1A to 1G... GPS wristwatch (clock with built-in antenna), 2... Dial, 2A... Sunglass, 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... Longitude display pointer (pointer), 62... Latitude display pointer (Pointer), 87... Solar panel, 87A... Opening portion, 87B... Through hole, 92... Pointer, 111... Cylindrical case (case), 131-135, 141-145... Stepping motor (motor), 136, 137, 146 , 147... Train wheel, 95, 320, 420, 520, 620... Pointer shaft.

Claims (9)

A case formed of a conductive member,
A dial formed of a non-conductive member and having a display window ,
The dial is disposed on the back side of, and an antenna electrode disposed on the dielectric the dielectric, and a patch antenna for receiving radio waves transmitted from a positioning information satellite,
Between the dial and the patch antenna, and an annular plate arranged so as to partially overlap the display window in plan view ,
Have
The electronic timepiece is characterized in that the annular plate is arranged at a position overlapping the antenna electrode in a plan view and is formed of a non-conductive member . The electronic timepiece according to claim 1,
The electronic watch is characterized in that the annular plate is a date indicator in which numbers 1 to 31 are displayed . The electronic timepiece according to claim 1 ,
It has a pointer to display the time,
An electronic timepiece characterized in that the annular plate has a display indicating a time zone of the time displayed by the hands. The electronic timepiece according to claim 1 ,
It has a pointer to display the time,
The annular plate is composed of two annular plates,
One of the two annular plates is a date indicator with numbers 1 to 31 displayed,
The other of the two circular plates is a ring having a display showing a time zone of the time displayed by the hands. The electronic timepiece according to claim 4 ,
Having one stepping motor that drives the two annular plates and has a rotor,
The electronic timepiece characterized in that when the rotor rotates in a first direction, the date dial rotates, and when the rotor rotates in a second direction opposite to the first direction, the ring rotates . The electronic timepiece according to claim 4,
A first stepping motor for driving the date dial,
A second stepping motor different from the first stepping motor that drives the ring;
An electronic watch characterized by having. The electronic timepiece according to any one of claims 1 to 6,
In plan view, the annular plate is arranged at a position where the central position of the annular plate and the central position of the dial are different.
An electronic watch characterized in that. The electronic timepiece according to any one of claims 1 to 7,
It has a solar panel which is arranged between the dial plate and the annular plate, has an opening formed at a position overlapping the display window in a plan view, and receives light to generate electricity.
An electronic watch characterized in that. The electronic timepiece according to claim 1,
A pointer to display the time,
A plurality of motors for driving the pointer,
A battery that supplies power to the plurality of motors,
The patch antenna is arranged at a position where it does not overlap with the plurality of motors in plan view and at a position where it does not overlap with the battery in plan view.
An electronic watch characterized in that.

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