Electronic timepiece with radio communication function

The present invention relates to an electronic clock with a wireless communication function such as a radio wave correction clock, and the present invention relates to an electronic clock with a wireless communication function having a photovoltaic power generation means for generating power by photoelectric conversion.

As an electronic clock with a wireless communication function that performs wireless communication by receiving radio waves from the outside or transmitting radio waves to the outside, for example, radio waves that receive radio waves containing standard time information with an antenna and correct the time. There is a modified clock. As a radio wave correction clock, one in which the antenna is arranged outside the outer case so that the antenna can easily receive radio waves has been proposed (for example, see Japanese Patent Application Laid-Open No. 11-223684, Fig. 4).

Further, in a radio wave correction watch, a power generation means such as a solar power generation means or a thermal power generation means is incorporated in the movement, and the power generated by the power generation means is used to drive the watch (for example, Japanese Patent Application Laid-Open No. 2003-121569, Japanese Patent Application Laid-Open No. 2003-121569, Japanese Patent Application Laid-Open No. 2003-121569. See Figure 1).

On the other hand, a radio wave correction watch in which the antenna is housed inside the outer case has been proposed (for example, see Japanese Patent Application Laid-Open No. 2002-31690, Fig. 6). In this radio wave correction watch, the solar substrate is arranged at a position covering the antenna arranged in the movement.

Further, a radio-controlled timepiece in which the dial is made of a non-metal plate such as ceramics and the dial is made of a solar cell has been proposed (see, for example, Fig. 1 of JP-A-2003-139869).

<patcit num="1"><text>Japanese Unexamined Patent Publication No. 11-223684</text></patcit><patcit num="2"><text>Japanese Unexamined Patent Publication No. 2003-121569</text></patcit><patcit num="3"><text>JP-A-2002-31690</text></patcit><patcit num="4"><text>Japanese Unexamined Patent Publication No. 2003-139869</text></patcit>

<p> In the radio wave correction watch of Patent Document 1, for example, even if the outer case is made of metal, the radio wave can be satisfactorily received by the antenna without being disturbed by the outer case. However, in this radio wave correction watch, since the antenna is arranged outside the outer case, the appearance of the radio wave correction watch is spoiled.</p><p> Further, in the radio wave correction watch according to Patent Document 2, although the antenna is arranged in the movement and the arrangement of the power generation means and the antenna is shown, there is no description about the arrangement of the movement with respect to the outer case. Therefore, for example, the outer case is made of metal. In the case of manufactured products, there is a possibility that the reception of radio waves of the antenna may be hindered, and the radio waves may not be received satisfactorily.</p><p> Further, in the radio wave correction watch according to Patent Document 3, since the solar substrate is usually made of a metal material such as stainless steel, the radio wave reception is obstructed by the solar substrate, and the radio wave reception by the antenna cannot be performed.</p><p> Further, in the radio-controlled timepiece of Patent Document 4, it is necessary to form either the back cover or the watch case with ceramics in order to make it less susceptible to radio wave reception interference, which spoils the appearance of the radio-controlled timepiece. On the other hand, if the back cover and the watch case are made of a metal material to improve the appearance, the antenna will be surrounded by the back cover and the watch case, and radio waves cannot be received well.</p><p> An object of the present invention is to provide an electronic clock with a wireless communication function capable of transmitting and receiving radio waves satisfactorily with an antenna without spoiling the appearance.</p>

<p> The electronic clock with a wireless communication function of the present invention displays a tubular metal outer case in which at least one of both ends in the cylindrical axis direction is open, an antenna housed in the outer case to receive standard radio waves, and a time display. The time display means to be used, and a photoelectric conversion unit and the photoelectric conversion unit that are arranged inside the opening of one of the two ends of the outer case to receive light from the opening side and generate electricity from the received light. A non-magnetic and non-conductive light-transmitting material that covers one end of the exterior case, a photo-generating means having a supporting substrate, a driving means that drives the time display means by electric power from the photo-generating means, and A cover member made of, a metal lid member covering the other end of the outer case, and a main plate made of a non-conductive and non-magnetic material, and the support substrate is made of a non-magnetic material. The antenna is made of a non-conductive material, and its axial direction is arranged substantially parallel to the plane direction of the support substrate, and the antenna is arranged on the lid member side with respect to the photoelectric power generation means, and the wireless communication is performed. In the plan view of the electronic clock with a function, the antenna is arranged at a position overlapping both the photoelectric conversion unit and the support substrate of the photopower generation means, and the antenna is arranged in a through hole penetrating the main plate. The electronic clock with a wireless communication function is characterized in that it is arranged closer to the photopower generation means than the lid member in a side view.</p><p> According to the present invention, since the support substrate is made of a non-magnetic material and a non-conductive material, radio waves such as standard radio waves pass through without being disturbed by the support substrate. Therefore, even if the antenna is arranged in the outer case so as to face the surface of the lid member side with respect to the photovoltaic power generation means, the antenna can transmit and receive radio waves from the photovoltaic power generation means side. Therefore, since the antenna is housed inside the outer case while maintaining good transmission / reception performance, the appearance of the electronic watch with wireless communication function is improved.</p><p> Further, since the antenna is arranged close to the support substrate in a side view of the electronic clock with a wireless communication function, the antenna can easily transmit and receive radio waves from the support substrate side. As a result, even if the lid member or the outer case itself is made of a metal material, radio waves can be transmitted and received from one opening on the support substrate side, which also improves the appearance of the electronic watch with a wireless communication function.</p><p> Further, since the antenna is arranged so as to face the surface on the lid member side with respect to the photovoltaic power generation means, the antenna does not block the light reception from the outer case opening by the photovoltaic power generation means, and the decrease in power generation efficiency is prevented. Will be done. In addition, it is possible to take a large area inside the outer case of the photovoltaic power generation means, which also prevents a decrease in power generation efficiency.</p><p> Here, when the axial direction of the antenna is arranged substantially parallel to the plane direction of the support substrate, the angle formed by the axial direction line of the antenna and the plane of the support substrate is about 0 ° or more and 30 ° or less. That is, preferably 15 ° or less, more preferably 10 ° or less. Further, the plan view of the electronic watch with a wireless communication function means a state in which the electronic watch with a wireless communication function is viewed from a direction parallel to the tubular axis direction of the outer case. Further, the side view of the electronic watch with a wireless communication function means a state in which the electronic watch with a wireless communication function is viewed from a direction orthogonal to the tubular axis direction of the outer case.</p><p> Further, when the antenna is arranged close to the support substrate, for example, in the side view of the electronic clock with wireless communication function, the distance from the center position of the antenna to one open end of the outer case is the center of the antenna. If the distance from the position to the lid member is smaller, or if the center position of the antenna is located closer to the time display means (one opening side of the outer case) than the center position of the dimension in the thickness direction of the outer case, the antenna Is in contact with the support substrate, or the distance between the antenna and the support substrate is set to a predetermined dimension or less.</p><p> The electronic clock with a wireless communication function of the present invention is formed by having a tubular metal outer case in which at least one of both ends in the tubular axis direction is open, a magnetic core and a coil, and is housed in the outer case to provide standard radio waves. An antenna for receiving the light, a time display means for displaying the time, and a photoelectric light generated inside the opening of either end of the outer case to receive light from the opening side and generate electricity from the received light. A photopower generation means having a conversion unit and a support substrate for supporting the photoelectric conversion unit, a drive means for driving the time display means by electric power from the photopower generation means, and a non-magnetic material covering one end of the exterior case. A cover member made of a non-conductive and light-transmitting material, a metal lid member covering the other end of the outer case, and a main plate made of a non-conductive and non-magnetic material are provided. The antenna is arranged so that its axial direction is substantially parallel to the plane direction of the support substrate, and at least both ends of the magnetic core of the antenna overlap with the support substrate in the plan view of the electronic clock with wireless communication function. The antenna is arranged in a through hole penetrating the main plate, and is arranged closer to the photopower generation means than the lid member in the side view of the electronic clock with wireless communication function. It is characterized by being done.</p><p> According to the present invention, at least both ends of the antenna are arranged at positions where they do not overlap with the support substrate in a plan view. Therefore, even when the support substrate is made of a magnetic material or a conductive material, for example, the support substrate is an antenna. Radio waves are satisfactorily transmitted and received from at least both ends of the antenna, which does not interfere with the radio wave magnetic field transmitted and received by. That is, for example, when the antenna includes a magnetic core and a coil wound around the magnetic core, when wireless communication is performed by the antenna, a magnetic field is linked from the end of the magnetic core to generate an induced power in the coil. Since radio waves are transmitted and received by, or vice versa, the transmission and reception performance of the antenna is further improved if at least both ends of the antenna are arranged at positions where they do not overlap with the support substrate in a plan view. Therefore, it becomes possible to use a highly rigid material such as magnetic stainless steel, conductive brass, beryllium copper, and non-magnetic stainless steel for the support substrate, and the strength of the support substrate is improved.</p><p> Further, since at least both ends of the antenna are arranged at positions that do not overlap with the support substrate in a plan view, at least both ends of the antenna should be substantially on the same plane as the support substrate or closer to one opening side of the outer case. It becomes possible to arrange. Therefore, at least both ends of the antenna are closer to the opening side of the outer case than when the antenna is arranged to face the surface on the lid member side with respect to the photovoltaic power generation means, which also causes wireless communication of the antenna. The accuracy is improved. Since the antenna approaches the opening side of the outer case, the wireless communication accuracy of the antenna can be maintained even if the lid member is made of a metal material, and the appearance of the electronic watch with a wireless communication function is improved. In this case, the support substrate can be made of a non-magnetic material or a non-conductive material, and may be, for example, a synthetic resin substrate.</p><p> Further, since the antenna is arranged close to the support substrate in a side view of the electronic clock with a wireless communication function, the antenna can easily transmit and receive radio waves from the support substrate side. As a result, even if the lid member or the outer case is made of a metal material such as a magnetic material or a conductive material, good wireless communication is possible from the opening side of the outer case, which also makes it possible to use an electronic watch with a wireless communication function. The appearance is improved.</p><p> Here, when the axial direction of the antenna is arranged substantially parallel to the plane direction of the support substrate, the angle formed by the axial direction line of the antenna and the plane of the support substrate is about 0 ° or more and 30 ° or less. That is, preferably 15 ° or less, more preferably 10 ° or less. The plan view of the electronic watch with a wireless communication function means a state in which the electronic watch with a wireless communication function is viewed from a direction parallel to the tubular axis direction of the outer case. Further, the side view of the electronic watch with a wireless communication function means a state in which the electronic watch with a wireless communication function is viewed from a direction orthogonal to the tubular axis direction of the outer case.</p><p> Further, when the antenna is arranged close to the support substrate, for example, in the side view of the electronic clock with wireless communication function, the distance from the center position of the antenna to one open end of the outer case is the center of the antenna. If the distance from the position to the lid member is smaller, or if the center position of the antenna is located closer to the time display means (one opening side of the outer case) than the center position of the dimension in the thickness direction of the outer case, the antenna Is in contact with the support substrate, or the distance between the antenna and the support substrate is set to a predetermined dimension or less.</p><p> The electronic clock with a wireless communication function of the present invention has a tubular metal outer case in which at least one of both ends in the tubular axis direction is open, an antenna housed in the outer case, and a time display means for displaying the time. A photoelectric conversion unit and the photoelectric conversion unit that are arranged inside the opening of one of the two ends of the exterior case, face outward from the opening side to receive light, and generate electricity from the received light. A photopowering means having a supporting substrate to support, a driving means for driving the time display means by electric power from the photopowering means, and non-magnetic and non-conductive light transmission covering one end of the outer case. A cover member made of a material and a metal lid member covering the other end of the outer case are provided, and the antenna is arranged so that its axial direction is substantially parallel to the plane direction of the support substrate. , The wireless communication function electronic clock is arranged close to the support substrate in a side view, the photopower generation means is divided into a plurality of parts, and at least one of the support substrates is made of a highly permeable magnetic material, and the antenna. At least one of both ends is magnetically connected to the support substrate made of a highly permeable magnetic material.</p><p> According to the present invention, at least one of both ends of the antenna is magnetically connected to a support substrate made of a highly permeable magnetic material, so that the magnetic field of radio waves from the outside is wider due to the support substrate and the end of the antenna. Guided by the surface, the reception sensitivity of the radio waves of the antenna is improved. Therefore, it becomes possible to use a highly rigid material such as a highly permeable metal material for the support substrate, and the strength of the support substrate is improved. In addition, since the antenna is arranged close to the support board in the side view of the electronic watch with wireless communication function, the antenna can easily transmit and receive radio waves from the support board side, that is, one opening side of the outer case. Become. As a result, even if the lid member and the outer case are made of a magnetic material such as a metal material or a conductive material, wireless communication is performed satisfactorily, and this also improves the appearance of the electronic watch with a wireless communication function.</p><p> Here, when the axial direction of the antenna is arranged substantially parallel to the plane direction of the support substrate, the angle formed by the axial direction line of the antenna and the plane of the support substrate is about 0 ° or more and 30 ° or less. That is, preferably 15 ° or less, more preferably 10 ° or less. The plan view of the electronic watch with a wireless communication function means a state in which the electronic watch with a wireless communication function is viewed from a direction parallel to the tubular axis direction of the outer case. Further, the side view of the electronic watch with a wireless communication function means a state in which the electronic watch with a wireless communication function is viewed from a direction orthogonal to the tubular axis direction of the outer case.</p><p> Further, when the antenna is arranged close to the support substrate, for example, in the side view of the electronic clock with wireless communication function, the distance from the center position of the antenna to one open end of the outer case is the center of the antenna. If the distance from the position to the lid member is smaller, or if the center position of the antenna is located closer to the time display means (one opening side of the outer case) than the center position of the dimension in the thickness direction of the outer case, the antenna Is in contact with the support substrate, or the distance between the antenna and the support substrate is set to a predetermined dimension or less. When at least one of both ends of the antenna is magnetically connected to the support substrate, the antenna is arranged close to the support substrate so that at least one of both ends of the antenna is close to the support substrate. It means a state in which the radio wave magnetic field entering the antenna is guided to at least one end of the antenna close to the support substrate.</p><p> In the present invention, it is desirable that the antenna is arranged in contact with the support substrate or at a position where the distance from the support substrate is within a predetermined dimension. According to the present invention, in the side view of the electronic clock with a wireless communication function, the antenna and the support substrate are close to each other because the antennas are arranged in contact with the support substrate or at intervals within a predetermined dimension. Is placed. As a result, the antenna is arranged at a position closer to one opening of the outer case, the antenna can easily transmit and receive radio waves from the opening, and the transmission and reception of radio waves becomes more reliable.</p><p> Here, the predetermined dimensions that define the distance between the antenna and the support substrate are inside the exterior case and the photovoltaic power generation means in consideration of the dimensions, materials, arrangement, etc. of the exterior case, lid member, antenna, photovoltaic power generation means, and the like. On the other hand, even when the antenna is provided on the surface side of the lid member side, it is appropriately set in advance so that the transmission and reception of radio waves by the antenna can be performed well. For example, in this predetermined dimension, when the movement in which the antenna is housed is arranged between the support substrate and the lid member, the center position of the antenna in the side view of the electronic watch with wireless communication function is the center position of the movement. It may be set so that it is arranged on the support substrate side rather than. Further, for example, the predetermined dimension may be set to be one-third or less, preferably one-fourth or less of the dimension in the tubular axis direction of the outer case.</p><p> In the present invention, it is desirable that the antenna and the photovoltaic power generation means are arranged at a position where at least a part of the antenna and the photovoltaic power generation means overlap each other in the side view of the electronic clock with wireless communication function. According to the present invention, since the antenna and the photovoltaic power generation means are arranged at positions where at least a part of them overlap in the side view of the electronic clock with wireless communication function, the antenna and the photovoltaic power generation means are arranged on substantially the same plane. It will be. Therefore, the antenna can be arranged closer to one opening of the outer case, and the transmission / reception of radio waves by the antenna becomes more reliable.</p><p> In the present invention, it is desirable that the center position of the antenna is located closer to the photovoltaic power generation means than the center position of the outer case in the side view of the electronic clock with wireless communication function. According to the present invention, since the center position of the antenna is arranged closer to the photovoltaic power generation means than the center position of the outer case, the antenna is arranged close to one end of the outer case, that is, the opening side. Therefore, the antenna can easily transmit and receive radio waves from the opening, and wireless communication is ensured. In addition, since the antenna can communicate from the opening side of the outer case, wireless communication is good even if the lid member or the outer case itself is made of a magnetic material such as a metal material or a conductive material, which also provides a wireless communication function. The appearance of the attached electronic clock is improved.</p><p> In the present invention, it is desirable that the dial is provided between the photovoltaic means and the cover member, and the dial is made of a non-magnetic and non-conductive light-transmitting material. According to the present invention, since the dial is made of a non-magnetic and non-conductive light transmitting material, the possibility that these members interfere with the magnetic field around the antenna is reduced, and the transmission / reception sensitivity of the antenna is improved. Then, wireless communication becomes more reliable.</p><p> In the present invention, it is desirable that the support substrate is made of a metal material. According to the present invention, when at least both ends of the antenna are arranged at positions where they do not overlap with the support substrate in the plan view of the electronic clock with wireless communication function, the support substrate is made of a metal material. The strength of the photovoltaic power generation means is improved while ensuring a good wireless communication function.</p><p> In the present invention, it is desirable that the support substrate is made of a non-magnetic and non-conductive material. According to the present invention, when at least both ends of the antenna are arranged at positions that do not overlap with the support substrate in a plan view, the support substrate is made of a non-magnetic and non-conductive material. The effect on the ambient magnetic field is more reliably reduced. Therefore, the transmission / reception sensitivity of the antenna is improved, radio waves can be transmitted / received more reliably, and wireless communication is performed accurately.</p><p> In the present invention, it is desirable that no other constituent member of the electronic clock with wireless communication function is arranged between the antenna and the photovoltaic power generation means in the side view of the electronic clock with wireless communication function. According to the present invention, since no other component is arranged between the antenna and the photovoltaic power generation means, the antenna is easily arranged closer to the photovoltaic power generation means, and the other components hinder the ingress of radio waves. It becomes easy to perform wireless communication from one opening side of the outer case without being used.</p><p> In the present invention, it is desirable that no other constituent member of the electronic clock with wireless communication function is arranged between the antenna and the time display means in the side view of the electronic clock with wireless communication function. According to the present invention, since no other component is arranged between the antenna and the time display means, the antenna can be easily arranged closer to the time display means, that is, the support substrate, and the radio wave can be transmitted by the other component. Wireless communication is possible from one opening side of the outer case without obstructing the entry.</p><p> In the present invention, it is desirable that the antenna includes a magnetic core and a coil wound around the magnetic core, and at least one end of both ends of the magnetic core is bent toward one end side of the outer case. According to the present invention, at least one end of both ends of the magnetic core of the antenna is bent toward one end side of the outer case, so that the end portion of the antenna is extended even when the antenna is housed inside the outer case. It is possible to arrange the wire at a position where it passes through the opening of the outer case, that is, a position where it does not interfere with the outer case. This facilitates transmission and reception of radio waves through the antenna even when the outer case is made of metal. On the contrary, since a metal material can be used for the outer case while maintaining the communication performance with the antenna, the appearance of the electronic watch with wireless communication function is improved.</p><p> In the present invention, the time display means includes a 12-hour pointer, and the axial direction of the antenna is arranged substantially parallel to the direction connecting the position where the pointer points to 3 o'clock and the position where the pointer points to 9 o'clock. desirable. According to the present invention, since the axial direction of the antenna is arranged substantially parallel to the direction connecting 3 o'clock and 9 o'clock, for example, an electronic watch with a wireless communication function is applied to a wristwatch having a metal band portion. Even in this case, the metal band portion does not interfere with the extension line of the end portion of the antenna, and the antenna can transmit and receive radio waves satisfactorily. Here, the fact that the axial direction of the antenna is almost parallel to the direction connecting 3 o'clock and 9 o'clock means that the extension line in the axial direction of the antenna and the direction line in the direction connecting 3 o'clock and 9 o'clock are 0 °. It means that the temperature is about 30 ° or less, preferably 15 ° or less, and more preferably 10 ° or less.</p><p> In the present invention, the time display means includes a dial that can be seen from one end side of the outer case, the drive means is arranged between the dial and the lid member, and the drive coil is induced. It is desirable that the electromagnetic motor driven by a voltage is provided, and the center position of the antenna is located closer to the dial than the center position of the driving means with respect to the side view of the electronic clock with wireless communication function. According to the present invention, in the side view of the electronic clock with wireless communication function, the center position of the antenna is arranged on the dial side from the center position of the drive means, so that the antenna and the drive coil are separated from each other in the side view. It will be placed in the position. Therefore, it becomes difficult for the radio wave from the outside to be drawn into the electromagnetic driving means, and the antenna can easily receive the radio wave from the opening on the time display means side. As a result, the transmission and reception of radio waves at the antenna becomes better.</p><p> In the present invention, it is desirable that the driving means includes a piezoelectric actuator that drives the time display means by the vibration of the piezoelectric element. According to the present invention, the piezoelectric actuator is vibrated by applying a voltage to the piezoelectric element, and the time display means is driven by this vibration. Unlike the electromagnetic motor that is normally used as a clock drive means, the piezoelectric actuator does not generate a magnetic field even when it is driven, so it does not interfere with the magnetic field around the antenna, and the transmission and reception of radio waves at the antenna is more reliable. Communication accuracy is improved.</p><p> In the present invention, a switching unit provided with a secondary battery for storing electric power from the photovoltaic means, and which is provided in the driving means and has gears, and a switching unit capable of manually operating the time display means from the outside. And at least one of a crystal oscillator unit having a crystal oscillator and a control block for controlling the operation of the driving means, and the antenna is a train wheel in a plan view of the electronic clock with a wireless communication function. It is desirable that the switching unit, the crystal oscillator unit, and the control block are arranged on the opposite side of the secondary battery so as to sandwich at least one of them. According to the present invention, the outer can case of the secondary battery is usually made of metal, but the antenna and the secondary battery sandwich at least one of a train wheel, a switching unit, a crystal oscillator unit, and a control block. Since they are arranged on opposite sides of each other, the secondary battery is arranged at a position far from the antenna. Therefore, the transmission / reception sensitivity of the radio wave of the antenna is improved without interfering with the radio wave magnetic field received by the secondary battery at the antenna, and the transmission / reception of the radio wave becomes more reliable.</p><p> In the present invention, it is desirable that the antenna is arranged on the lid member side of the date wheel made of a non-magnetic material and a non-conductive material in the side view of the electronic clock with a wireless communication function. Further, in the present invention, the outer case may have a structure in which the surface of the outer case body made of synthetic resin is covered with a thin metal plate and integrated.</p>

Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In addition, in the second and subsequent embodiments described later, the same parts as the components in the first embodiment described below and the parts having the same functions are designated by the same reference numerals, and the description thereof will be simply or omitted.

[First Embodiment] FIG. 1 is a plan view of a radio wave correction clock 100 as an electronic clock with a wireless communication function according to the first embodiment, and FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 shows a sectional view taken along line III-III of FIG. The radio wave correction watch 100 is a wristwatch type and includes a ring-shaped (short cylinder shape with openings at both ends) outer case 1 as shown in FIGS. 1, 2, and 3.

The outer case 1 is a ring-shaped member having both ends open in the tubular axial direction L1 which is the axial direction of the gear that drives each pointer (for example, the axial direction of the second wheel 444), and is, for example, brass, stainless steel, or titanium. It is made of a metal material such as an alloy. The thickness of the outer case 1 is smaller than the diameter of the ring, and is formed to be 10 mm or less or 5 mm or less. Mounting portions 11 and 12 for attaching the wristwatch band are formed on the outer periphery of the outer case 1 at positions opposite to each other. Here, the direction in which one of the mounting portions 11 and 12 is provided is the 12 o'clock direction and the direction in which the other of the mounting portions 11 and 12 is provided is the 6 o'clock direction when viewed from the center point of the exterior case 1. In FIG. 1, the upper side (toward the mounting portion 11) is in the 12 o'clock direction, and the lower side (toward the mounting portion 12) is in the 6 o'clock direction.

The body of the outer case 1 is provided with a winding stem 131 that penetrates from approximately 4 o'clock. One end of the winding stem 131 is located on the outside of the outer case 1, and a crown 132 is provided at one end of the outer case 1. The other end of the winding stem 131 is located inside the outer case 1, and the mandarin duck 133 and the mandarin duck 134 are provided on the other end side. The Kannuki 133 engages with the Tsuzumi wheel 135, and by pulling out the winding stem 131, the Tsuzumi wheel 135 moves in the axial direction of the winding stem 131 via the mandarin duck 134 and the Kannuki 133, and the back wheel of the sun (not shown). ), And the position of the pointer can be corrected. A switching unit 13 that can be switched so that the position correction of the pointer can be manually operated from the outside is configured by the winding stem 131, the Kannuki 133, the mandarin duck 134, the Tsuzumi wheel 135, and the like.

As shown in FIGS. 2 and 3, a time display means 2 is provided on one opening side of the outer case 1, and a back cover (lid member) that closes the opening on the other opening (end) of the outer case 1 is provided. ) 3 is provided. Here, the upper part in FIGS. 2 and 3 is the upper part of the radio wave correction clock 100, and the lower part in the figure is the lower part of the radio wave correction clock 100. Further, the direction along the tubular axis direction L1 is defined as the thickness direction (height direction) of the radio wave correction clock 100.

The time display means 2 includes a dial 21 having a time display surface 211 substantially orthogonal to the tubular axis direction L1 (vertical direction of the paper surface in FIG. 1) of the exterior case 1, and a pointer rotating on the dial 21. It is configured with 221, 222.

The dial 21 has a substantially disk shape and has an area for closing the opening of the outer case 1. The dial 21 is made of a non-conductive, non-magnetic, and light-transmitting material, and for example, inorganic glass, plastic, ceramics, paper, or any other material can be adopted. The time display surface 211 is provided so as to be visible from the outside and faces outward, and decorations (not shown) such as numbers and letters indicating the time are printed in a ring shape near the outer edge on the time display surface 211.

The pointer is configured to include a minute hand 221 indicating a minute and an hour hand 222 indicating an hour. Both guidelines 221, 222 are made of metal materials such as brass, aluminum, and stainless steel. The minute hand 221 and the hour hand 222 are rotated on the time display surface 211 with the substantially center of the dial 21 as the rotation axis, and the time is indicated by pointing to numbers and letters on the time display surface 211. Therefore, the pointer is a 12-hour time display means that represents 12 hours in one round of the hour hand 222.

A windshield (cover member) 23 is provided so as to face the dial 21 with the pointers 221 and 222 in between. The windshield 23 is provided so as to cover one opening of the outer case 1, and has an area for closing this opening. The windshield 23 is made of a non-conductive and non-magnetic light-transmitting material, and is formed of, for example, inorganic glass or organic glass. The photovoltaic power generation means 6 is arranged on the windshield 23 side (one opening side) of the exterior case 1 on the side opposite to the time display surface 211 of the dial 21. The photovoltaic power generation means 6 includes a photoelectric conversion element (photoelectric conversion unit) 61 that generates electricity by photoelectric conversion, and a support substrate 62 that supports the photoelectric conversion element 61.

The photoelectric conversion element 61 has a substantially circular panel shape having substantially the same area as the dial 21, and is configured by laminating a transparent electrode layer (TOC), a semiconductor layer, and a transparent electrode layer in this order from the dial 21 side. (Not shown). The transparent electrode layer has a transparent conductive film, and the transparent conductive film includes, for example, SnO.₂, ZnO, ITO (Indium Tin Oxide), etc. The semiconductor layer is a PIN-type photodiode that is made of microcrystalline or amorphous silicon and has a pn junction structure. A reflective metal film may be vapor-deposited on the transparent electrode layer on the side separated from the dial 21.

The support substrate 62 is made of a non-magnetic and non-conductive material such as a polyimide resin, an epoxy resin containing glass, and ceramics. The support substrate 62 has a plate shape having substantially the same area as the photoelectric conversion element 61, and is adhered to the photoelectric conversion element 61 on the opposite side of the dial 21. Such a photovoltaic power generation means 6 is fixed by joining the photoelectric conversion element 61 to the dial 21.

The back cover 3 is provided so as to face the dial 21 at a predetermined distance and cover the other opening end of the outer case 1, and has an area for closing the opening. The back cover 3 is made of a conductive and non-magnetic metal material, and for example, stainless steel, brass, titanium alloy and the like can be adopted, and permalloy, which is a conductive and magnetic metal material, can also be adopted.

Power is supplied to the movement 4 having a timekeeping function, the plastic inner frame 14 that holds the movement 4 in the outer case 1, and the movement 4 between the dial 21 and the back cover 3 inside the outer case 1. A battery 49 and an antenna 5 for receiving standard radio waves including time information are provided.

The movement 4 includes a crystal oscillator unit 41 including a crystal oscillator 411 (see FIG. 4), a circuit block (control block) 42 having a control function, and a stepping motor (electromagnetic motor) 43A for rotating pointers 221, 222. , 43B, a wheel train 44 that transmits the power of the stepping motors 43A, 43B to the pointers 221, 222 as a rotary motion, and a main plate 46 that sandwiches the wheel train 44 from the axial direction L1 of the exterior case 1. It is configured with a train wheel 47.

The crystal oscillator unit 41 includes a crystal oscillator 411 for a reference clock. Further, a crystal oscillator 412 for 60 kHz and a crystal oscillator 413 for 40 kHz are provided as a crystal oscillator for generating a tuning signal that is tuned to a standard radio frequency (60 kHz, 40 kHz). Crystal oscillators 412 and 413 for generating a tuning signal are arranged at approximately 9 o'clock.

The crystal oscillator unit 41 and the circuit block 42 are arranged in the substantially 12 o'clock direction. FIG. 4 shows a functional block diagram of the circuit block 42. The circuit block 42 has a receiving circuit 421 that processes the standard radio wave received by the antenna 5 and outputs it as time information, a storage circuit 422 that stores the time information output from the receiving circuit 421, and a clock from the crystal oscillator 411. A central control circuit 423 that counts the current time with a pulse and corrects the current time with the received time information, a motor drive circuit 425 that drives the stepping motors 43A and 43B, and a needle position detection circuit 426 that detects the pointer position. I have.

The receiving circuit 421 includes an amplifier circuit that amplifies the standard radio wave received by the antenna 5, a filter that extracts a desired frequency component, a demodulation circuit that demodulates the signal, a decoding circuit that decodes the signal, and the like. The storage circuit 422 temporarily stores the time information decoded by the reception circuit 421 and compares the stored time information to determine the success or failure of reception. The photovoltaic power generation means 6 receives the light incident from the dial 21 side to generate electricity, and the amount of this power generation is charged to the battery (secondary battery) 49. A diode for preventing discharge from the battery 49 is provided between the photovoltaic power generation means 6 and the battery 49. Each electronic circuit is driven by the electric power of the battery 49.

The central control circuit 423 includes an oscillation circuit, a frequency dividing circuit, a current time counter that counts the current time, and a time adjustment circuit that corrects the count value of the current time counter according to the received time information. The central control circuit 423 includes a reception control circuit 424 that stores the reception schedule of the reception circuit 421 and controls the reception operation, and the reception schedule is set to perform the reception operation from 2:00 am to 2:06 am. It is said. When the reception control circuit 424 is instructed to forcibly receive the time information by the input operation by the switching unit 13, the reception operation is executed by the reception circuit 421 by the output signal from the reception control circuit 424.

The motor drive circuit 425 applies a drive pulse to the stepping motors 43A and 43B at the timing commanded by the central control circuit 423. The hand position detection circuit 426 detects the hand position of the pointer (minute hand 221, hour hand 222) and outputs the detection result to the central control circuit 423. In the central control circuit 423, the detection result from the hand position detection circuit 426 and the counter value of the time counter are compared. Then, based on this comparison result, the output of the motor pulse that matches the pointer position with the counter value is commanded to the motor drive circuit 425.

The drive means includes a minute hand stepping motor 43A that rotates the minute hand 221 and an hour hand stepping motor 43B that rotates the hour hand 222. The stepping motors 43A and 43B are divided into drive coils 431A and 431B that generate magnetic force by a drive pulse supplied from the motor drive circuit 425, stators 432A and 432B excited by the drive coils 431A and 431B, and stators 432A and 432B. It is equipped with rotors 433A and 433B that are rotated by an excited magnetic field. The minute hand stepping motor 43A is arranged in the approximately 10 o'clock direction, and the hour hand stepping motor 43B is arranged in the approximately 8 o'clock direction.

The stepping motors 43A and 43B are attached to the train wheel receiver 47 when the drive coils 431A and 431B are viewed from the side of the radio wave correction watch 100 (that is, the radio wave correction watch 100 is viewed from the direction perpendicular to the cylindrical axis direction L1 of the exterior case 1). The drive coils 431A and 431B are arranged in overlapping positions so that the drive coils 431A and 431B are arranged close to the back cover 3. At this time, the center position M in the thickness direction (height direction) of the drive coils 431A and 431B is the center position C in the thickness direction (height direction) of the movement 4, that is, a position at equal intervals from the main plate 46 and the train wheel receiver 47. It is located closer to the back cover 3 than the back cover 3. Therefore, the distance M1 from the center position M in the thickness direction of the drive coils 431A and 431B to the lower surface of the train wheel receiver 47 is smaller than the distance M2 from the center position M in the thickness direction of the drive coils 431A and 431B to the upper surface of the main plate 46. Is set to.

The train wheel 44 transmits the rotation of the rotors 433A and 433B to the pointers 221, 222, and connects the minute hand stepping motor 43A to the second wheel 444 that rotates integrally with the minute hand shaft 442 to which the minute hand 221 is connected. And the hour hand wheel train 44B that connects the hour hand stepping motor 43B to the cylinder wheel 441 to which the hour hand 222 is connected. For the train wheel 44, a material capable of ensuring appropriate strength, such as a metal material such as stainless steel or a non-conductive and non-magnetic material such as ceramics and plastic, may be appropriately selected.

The main plate 46 pivotally supports the train wheel 44 on the dial 21 side, and the train wheel receiver 47 pivotally supports the train wheel 44 on the back cover 3 side. The main plate 46 and the train wheel receiver 47 are made of a non-conductive and non-magnetic material, and are formed of, for example, plastic or ceramics. The train wheel 44, the stepping motors 43A and 43B, and the circuit block 42 are sandwiched between the main plate 46 and the train wheel receiver 47 and integrated to form the movement 4. The above-mentioned photovoltaic power generation means 6 may be screwed and fixed to the movement 4, or may be attached to the movement 4 by a frame member snap-attached to the movement 4.

The inner frame 14 is a ring-shaped member along the inner circumference of the outer case 1 and surrounds the peripheral end surface of the movement 4. The movement 4 is held in the outer case 1 by the inner frame 14. The inner frame 14 is made of a non-conductive and non-magnetic material, for example, made of plastic or ceramics.

The battery 49 is a secondary battery that is connected in series with the photovoltaic power generation means 6 and stores the electric power generated by the photovoltaic power generation means 6, and the outer can case thereof is made of a metal material. The battery 49 is arranged in the approximately 2 o'clock direction and occupies a place from the approximately 1 o'clock direction to the approximately 3 o'clock direction.

The antenna 5 is formed by including a magnetic core 51 made of a high magnetic permeability material such as pure iron or amorphous metal, and a coil 52 wound around the magnetic core 51 in multiple layers. The magnetic core 51 is formed by laminating a large number of thin plate-shaped members so that iron loss can be reduced, and the cross-sectional outer shape is substantially rectangular. The thin plate-shaped members are adhered to each other with an adhesive having an insulating property such as epoxy.

In the side view of the radio wave correction clock 100, the antenna 5 has an axial direction substantially parallel to the plane of the support substrate 62 and a surface on the back cover 3 side with respect to the photoelectric conversion element 61, so that the antenna 5 is photoelectrically converted on the support substrate 62. The element 61 is arranged so as to be close to the surface opposite to the side on which the element 61 is provided, that is, the surface of the support substrate 62 on the back cover 3 side. As a result, in the state of the exterior case 1 viewed from the direction parallel to the tubular axis direction L1, that is, in the plan view of the radio wave correction clock 100, almost the entire antenna 5 is the photoelectric conversion element 61 of the photovoltaic means 6 and the support substrate. Covered by 62. The antenna 5 may be arranged in contact with the support substrate 62, or may be arranged with a distance within a predetermined dimension from the support substrate 62. The predetermined dimensions of the antenna 5 and the support substrate 62 may be set in advance to a distance at which the antenna 5 can receive radio waves satisfactorily in consideration of the shape of the antenna 5, the material and dimensions of the support substrate 62, and the like.

Here, in the present embodiment, the antenna 5 is arranged so as to penetrate the main plate 46 and project toward the photovoltaic power generation means 6, and the outer peripheral portion of the antenna 5 is in contact with the lower surface of the support substrate 62. As a result, the center position N in the thickness direction (height direction) of the magnetic core 51 is arranged closer to the dial 21 than the center position C in the thickness direction (height direction) of the movement 4. At this time, the center position N in the thickness direction (height direction) of the magnetic core 51 is arranged closer to the dial 21 (that is, the photovoltaic power generation means 6) than the center position P in the thickness direction in the metal outer case 1. There is. Therefore, the distance N2 from the center position N in the thickness direction of the magnetic core 51 (antenna 5) to the end on the side opposite to the back cover 3 (dial 21 side) of the exterior case 1 is the thickness of the magnetic core 51 (antenna 5). It is set smaller than the distance N1 from the center position N in the direction to the upper surface of the back cover 3.

The antenna 5 is arranged in the approximately 6 o'clock direction in the plan view of the radio wave correction clock 100, and its axial direction is substantially parallel to the direction connecting the approximately 3 o'clock direction and the approximately 9 o'clock direction. Further, the antenna 5 is arranged on the opposite side of the switching unit 13 from the battery 49 in the plan view of the radio wave correction clock 100.

The operation of the radio wave correction clock 100 of the first embodiment having such a configuration will be described. The current time of the time counter is updated by the reference clock generated by dividing the oscillation of the crystal oscillator 411. Further, the position of the pointer (minute hand 221, hour hand 222) is detected by the hand position detection circuit 426, and the detection result is output to the central control circuit 423. The pointer position and the counter value of the time counter are compared, and the stepping motors 43A and 43B are driven via the motor drive circuit 425 based on the comparison result. The rotation of the rotors 433A and 433B driven by the stepping motors 43A and 43B is transmitted to the pointers 221, 222 by the train wheel 44, and the current time is indicated by the numbers on the time display surface 211 by the pointers 221, 222. Is displayed.

Next, the standard radio wave reception operation and the time adjustment operation based on the standard radio wave time information will be described. Standard radio waves are received by antenna 5. Here, the standard radio wave is an electromagnetic wave, and is composed of an electric field fluctuation that oscillates in a direction perpendicular to the traveling direction of the radio wave and a magnetic field fluctuation that vibrates in a direction perpendicular to the traveling direction and the electric field fluctuation of the radio wave. Then, the magnetic field fluctuation passes through the windshield 23, the dial 21, and the photovoltaic power generation means 6, passes through the magnetic core 51 of the antenna 5, and interlinks with the coil 52 along the axis, so that an induced voltage is generated in the coil 52. Standard radio waves are received.

At 2:00 am, which is the reception start time set in the reception control circuit 424, the reception control circuit 424 outputs a command to start the reception operation to the reception circuit 421. Alternatively, when the forced reception operation is input by the switching unit 13, the reception control circuit 424 outputs a reception start command to the reception circuit 421. Upon receiving the reception start command, the reception circuit 421 receives power from the battery 49 and starts decoding the signal (time information) received by the antenna 5.

The decoded time information is once stored in the storage circuit 422, and the time information obtained by receiving a plurality of times (for example, 6 times) is compared before and after to determine the accuracy of reception. The current time of the time counter is corrected by the time adjustment circuit according to the accurately received time information. Then, the hand position is corrected according to the time of the time counter, and the time according to the reception time is shown.

Further, when the light is irradiated toward the dial 21, the light passes through the windshield 23 and the dial 21 and enters the photoelectric conversion element 61. Then, it is photoelectrically converted by the photoelectric conversion element 61 to generate electric power, and the generated electric power (current) is supplied to the battery 49 from the transparent electrode and stored.

According to such a first embodiment, the following effects can be obtained. (1) Since the support substrate 62 is made of a non-magnetic material, an external magnetic field can penetrate the photovoltaic power generation means 6, and the antenna 5 arranged directly under the photovoltaic power generation means 6 is on the dial 21 side. Can receive radio waves well from. Therefore, the antenna 5 can secure good reception performance without being affected by the photovoltaic power generation means 6, and in that case, the back cover 3 and the outer case 1 can be made of a metal material to correct radio waves. The appearance of the watch 100 can be improved. On the other hand, the photovoltaic power generation means 6 can satisfactorily receive light and generate electricity without being hindered by the incident light even if the antennas 5 are arranged close to each other. Further, since the support substrate 62 is made of a non-conductive material, it does not interfere with the electric field component contained in the standard radio wave from the outside. Therefore, the electric field component of the standard radio wave can satisfactorily penetrate the photovoltaic power generation means 6, and the antenna 5 can satisfactorily receive the radio wave from the dial 21 side.

(2) Since the antenna 5 is arranged on the back cover 3 side of the photovoltaic means 6 and the support board 62 is arranged so as to overlap the entire antenna 5 in the plan view of the radio wave correction clock 100, from the windshield 23 side. The entire antenna 5 is covered by the photovoltaic means 6 and becomes invisible, which also improves the appearance of the radio wave correction clock 100. Further, since the radio wave can be received even if the antenna 5 is arranged directly under the photovoltaic power generation means 6, the area of the photoelectric conversion element 61 can be maximized on the inner circumference of the exterior case 1 and the light receiving area can be increased, so that the power generation efficiency is good. Can be.

(3) The antenna 5 is arranged in contact with the support substrate 62, and is arranged on the dial 21 side from the center position C of the movement 4 and on the dial 21 side from the center position P in the thickness direction of the outer case 1. Therefore, the antenna 5 can be arranged close to the opening on the dial 21 side (windshield 23 side) of the exterior case 1, the radio waves can be well received from the opening, and the reception sensitivity of the antenna 5 can be improved. That is, the distance N2 from the center position N of the antenna 5 to the end of the exterior case 1 on the dial 21 side is set smaller than the distance N1 from the center position N of the antenna 5 to the back cover 3, so that the outside is set. Radio waves can easily enter through the opening on the dial 21 side of the exterior case 1. Further, since the antenna 5 is arranged at a position away from the back cover 3, it is possible to prevent radio waves entering from the outside from being drawn into the conductive back cover 3, and the radio wave reception by the antenna 5 is good and reliable. it can. In this case, since the other components (components) of the radio wave correction clock 100 are not arranged between the antenna 5 and the support board 62, the reception of radio waves is not hindered by the other components. Antenna 5 can receive radio waves well and reliably. This also applies to an electronic clock with a wireless communication function that is not provided with the photovoltaic power generation means 6. That is, the center position N of the antenna 5 is located closer to the dial 21 than the center position P of the exterior case 1, in other words, from the center position N of the antenna to the end of the exterior case 1 on the dial 21 side. If the distance N2 of is set smaller than the distance N1 from the center position N of the antenna to the back cover 3, the antenna 5 can be used even if the back cover 3 is made of a conductive material such as a metal material. , It becomes easier to receive radio waves from the opening on the dial 21 side of the outer case 1.

(4) At this time, since the drive coils 431A and 431B of the stepping motors 43A and 43B are arranged close to the back cover 3 side, the axis of the antenna 5 and the axis of the drive coils 431A and 431B are radio-corrected clocks. It can be placed at positions separated from each other in 100 side views. Normally, when a current flows through the drive coils 431A and 431B, a weak magnetic field is generated around the drive coils 431A and 431B. However, since these drive coils 431A and 431B are arranged at positions away from the antenna 5, this is the case. The influence of the weak magnetic field on the antenna 5 can be reduced. Further, since the drive coils 431A and 431B are arranged close to the back cover 3 side, it is possible to prevent radio waves from the outside from being drawn into the stators 432A and 432B, and the antenna 5 is the dial 21 of the outer case 1. Radio waves can be easily received from the side opening.

(5) Since the switching unit 13 is arranged between the antenna 5 and the battery 49, the influence of the metal outer can case of the battery 49 on the magnetic field around the antenna 5 can be minimized, and the antenna 5 can be minimized. You can receive radio waves more reliably and accurately.

(6) Since the antenna 5 is arranged almost parallel to the direction connecting 3 o'clock and 9 o'clock, for example, even if a metal wristwatch band is attached to the attachment portions 11 and 12, it is on the axial extension line of the antenna 5. Since the wristwatch band does not interfere with the antenna 5, the antenna 5 can receive radio waves in a good and reliable manner without being disturbed by the wristwatch band.

(7) Since the dial 21 and the windshield 23 are made of a non-magnetic material and a non-conductive material, radio waves entering from the opening on the windshield 23 side of the exterior case 1 can pass through the dial 21 and the windshield 23. .. Therefore, the antenna 5 can satisfactorily receive the radio waves entering through the opening of the outer case 1.

[Second Embodiment] Next, the second embodiment of the present invention will be described. In the second embodiment, the arrangement of the photovoltaic power generation means 6 and the antenna 5 in the first embodiment is different. FIG. 5 shows a plan view of the radio wave correction clock 100 according to the second embodiment, and FIG. 6 shows a sectional view taken along line VI-VI of FIG. In FIGS. 5 and 6, the photovoltaic means 6 is formed in a substantially circular shape having substantially the same area as the dial 21, and is approximately 6 o'clock so as to surround the antenna 5 along the outer shape of the antenna 5. A U-shaped notch 63 is formed. As a result, the antenna 5 and the photovoltaic power generation means 6 are arranged at positions where they do not overlap each other in the plan view of the radio wave correction clock 100. The support substrate 62 is made of a conductive metal material such as stainless steel. Here, as the material of the support substrate 62, a material having one or both magnetic and non-magnetic properties can be adopted.

The antenna 5 is arranged so as to partially penetrate and project from the main plate 46 in the side view of the radio wave correction clock 100, and is arranged directly below the dial 21, that is, close to the side opposite to the time display surface 211. .. At this time, the antenna 5 may be arranged in contact with the dial 21 or may be arranged in close proximity with an interval within a predetermined dimension.

With such an arrangement, the antenna 5 (coil 52 or the like) and the support substrate 62 are arranged at positions where they overlap each other in the side view of the radio wave correction clock 100. Also in the second embodiment, the center position N of the magnetic core 51 of the antenna 5 in the thickness direction (height direction) is arranged on the dial 21 side from the center position C of the movement 4 in the thickness direction (height direction). ing. Further, the center position N of the magnetic core 51 in the thickness direction (height direction) is arranged closer to the dial 21 than the center position P in the thickness direction of the metal outer case 1. The distance N2 from the center position N in the thickness direction of the magnetic core 51 (antenna 5) to the end of the exterior case 1 on the dial 21 side is the back cover 3 from the center position N in the thickness direction of the magnetic core 51 (antenna 5). Distance is set smaller than N1. With such an arrangement, the antenna 5 can easily receive radio waves from the opening on the dial 21 side of the exterior case 1.

According to such a second embodiment, the same effects as those of (4), (5), (6) and (7) of the first embodiment can be obtained, and the following effects can be obtained. .. (8) Since the antenna 5 is arranged at a position overlapping the support substrate 62 in the side view of the radio wave correction clock 100 by providing the notch 63 or the like in the photovoltaic power generation means 6, the antenna 5 is arranged by the thickness of the photovoltaic power generation means 6. It can be arranged closer to the dial 21, and the antenna 5 can be closer to the windshield 23 side than in the first embodiment. Therefore, since the antenna 5 can be arranged closer to the opening of the outer case 1, radio waves can be more reliably received from the opening. In this case, since the other components (components) of the radio wave correction clock 100 are not arranged between the antenna 5 and the dial 21, the radio wave intrusion is not obstructed by the other components. Antenna 5 can receive radio waves well and reliably. Further, although the antenna 5 overlaps with the support substrate 62 in the side view of the radio wave correction clock 100, the dial 21 is closer to the dial 21 side from the center position C of the movement 4 and from the center position P in the thickness direction of the exterior case 1. The distance N2 from the center position N of the antenna 5 to the end of the exterior case 1 on the dial 21 side is smaller than the distance N1 from the center position N of the antenna 5 to the back cover 3. It is set. Therefore, similarly to the effect of (3) of the first embodiment, radio waves can be satisfactorily received from the opening on the dial 21 side of the outer case 1, and the reception sensitivity of the antenna 5 can be improved.

(9) Since the antenna 5 and the photovoltaic power generation means 6 are arranged at positions where they do not overlap in the plan view of the radio wave correction clock 100 by forming a notch 63 in the photovoltaic power generation means 6, the support substrate 62 is made of a metal material. Even if it is configured, it does not interfere with the magnetic field entering the antenna 5, and good reception performance of the antenna 5 can be ensured. As a result, the metal material of the support substrate 62 can be selected regardless of whether it is magnetic or non-magnetic, the range of selection can be expanded, and the strength of the photovoltaic power generation means 6 can be improved. In particular, when the support substrate 62 is made of a non-magnetic and non-conductive material, the magnetic material is not arranged around the antenna 5, so that the radio wave reception of the antenna 5 is not hindered, which is more reliable and good. The reception operation can be performed.

[Third Embodiment] Next, the third embodiment of the present invention will be described. In the third embodiment, the shapes of the photovoltaic power generation means 6 and the antenna 5 in the second embodiment are different. FIG. 7 shows a plan view of the radio wave correction clock 100 according to the third embodiment. In FIG. 7, three photovoltaic power generation means 6 are provided (6A, 6B, 6C), and these three photovoltaic power generation means 6A, 6B, 6C can improve the electromotive force (voltage). The photoelectric conversion elements 61A, 61B, and 61C are connected in series with each other. Further, in each of the photovoltaic means 6A, 6B, 6C, the support substrates 62A, 62B, 62C are made of materials having conductivity and high magnetic permeability such as amorphous metal, permalloy, and stainless steel, as in the second embodiment. It is composed of.

The photovoltaic power generation means 6B and 6C are arranged in the substantially 4 o'clock direction and the approximately 8 o'clock direction, respectively, and are arranged at positions corresponding to both ends of the antenna 5. These photovoltaic power generation means 6B and 6C are formed in a substantially triangular shape having substantially the same dimensions together with the photoelectric conversion elements 61B and 61C and the support substrates 62B and 62C. The photovoltaic power generation means 6A, 6B, and 6C are arranged at positions where they do not overlap each other in the plan view of the radio wave correction clock 100. Further, the support substrates 62B, 62C of the photovoltaic power generation means 6B, 6C and the photoelectric conversion elements 61B, 61C are insulated from each other, and the photoelectric conversion elements 61B, 61C are electrically connected to the photovoltaic power generation means 6A.

The photovoltaic power generation means 6A is arranged in the approximately 12 o'clock direction, and both the photoelectric conversion element 61A and the support substrate 62A form the inner circumference of the exterior case 1, the area surrounded by the photovoltaic power generation means 6B and 6C, and the antenna 5. It is formed so as to almost cover it, and is formed in a deformed shape having a convex portion on a substantially semicircular chord portion. Therefore, the photovoltaic power generation means 6A covers most of the openings of the exterior case 1, has a larger area than the photovoltaic power generation means 6B and 6C, and is a main part of the photovoltaic power generation means 6. These photovoltaic power generation means 6A, 6B, 6C are arranged at positions where they do not overlap each other in the plan view of the radio wave correction clock 100.

The number of divisions of the photovoltaic power generation means 6 is not limited to three, and may be arbitrarily set to two or four or more. Further, the plurality of photovoltaic power generation means 6A, 6B, 6C are not limited to those in which the photoelectric conversion elements 61A, 61B are connected in series, and may be connected in parallel. The antenna 5 is arranged substantially parallel to the direction connecting 3 o'clock and 9 o'clock in the axial direction at about 6 o'clock. The ends of the magnetic core 51 are formed in a substantially triangular shape that is substantially the same as the planar shape of the photovoltaic power generation means 6B and 6C, and each is magnetically bonded to the support substrates 62B and 62C by adhesion or pressure welding.

FIG. 8 shows a partial cross-sectional view taken along line VIII-VIII of FIG. As shown in FIG. 8, both ends of the magnetic core 51 are bent toward the photovoltaic power generation means 6B and 6C at the outer portions of both ends of the coil 52, whereby both ends of the magnetic core 51 are more dialed. It is arranged close to the 21 side (the opening side of the exterior case 1), and the photovoltaic power generation means 6B and 6C are arranged in contact with the dial 21. It should be noted that the photovoltaic power generation means 6B, 6C may be magnetically joined to the magnetic core 51 without bending the end portion of the magnetic core 51, and as a result, the photovoltaic power generation means 6B, 6C may be arranged in a state separated from the dial 21. ..

According to such a third embodiment, the same effects as those of (3), (4), (5), (6) and (7) of the first embodiment can be obtained, and the following effects can be obtained. The effect is obtained. (10) Since the support boards 62B, 62C and both ends of the magnetic core 51 of the antenna 5 are magnetically bonded, the magnetic field of the standard radio wave is applied to the wide surface of both ends of the support boards 62B, 62C and the magnetic core 51 of the antenna 5 Can lead to. As a result, the interlinkage magnetic flux can be increased, and the reception sensitivity of the antenna 5 can be improved. Further, at this time, by joining both ends of the antenna 5 to the support substrates 62B and 62C, the photovoltaic power generation means 6B and 6C can be formed in the portions, without reducing the light receiving area of the photovoltaic power generation means 6. The reception accuracy of the antenna 5 can be improved.

(11) Unlike the photovoltaic means 6B and 6C that guide the magnetic field to the antenna 5, the photovoltaic means 6A is formed in a shape that does not overlap with the antenna 5 in the plan view of the radio wave correction clock 100. Similar to the effect of (8), the support substrate 62A can be made of a magnetic material such as a metal material without interfering with the reception of radio waves of the antenna 5. Therefore, the strength of the photovoltaic power generation means 6 can be improved.

Further, in the plan view of the radio wave correction clock 100, since the support boards 62A, 62B, 62C do not overlap the coil 52 portion of the antenna 5, the antenna 5 can be brought closer to the windshield 23 side, and the second embodiment can be obtained. Similar to the effect of (9), the antenna 5 can receive radio waves more reliably.

(12) Since three photovoltaic power generation means 6A, 6B, and 6C are provided and these are connected in series with each other, the electromotive force can be improved.

The present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention. For example, the shape of the photovoltaic power generation means is not limited to that of each embodiment, and can be arbitrarily set in consideration of the shape of the outer case, the arrangement of the drive means, and the like.

FIG. 9 shows a plan view of the radio wave correction clock 100 showing a modification of the photovoltaic power generation means of the present invention. In FIG. 9, the photovoltaic power generation means 6 is formed in a substantially semicircular shape in which a straight portion 64 is formed in the substantially 6 o'clock direction of the disk shape. The straight line portion 64 is formed parallel to the axial direction of the antenna 5, that is, parallel to the direction connecting 3 o'clock and 9 o'clock, along one end of the long side of the outer shape of the antenna 5. Therefore, the antenna 5 and the photovoltaic power generation means 6 do not overlap in the plan view of the radio wave correction clock 100.

According to the shape of the photovoltaic power generation means 6, the support substrate of the photovoltaic power generation means 6 does not overlap the antenna 5 in a plane. Therefore, even if the support substrate is made of a magnetic material or a conductive material, the antenna 5 is an outer case. Radio waves can be well received from the 6th side of the photovoltaic power generation means. Further, at this time, since the linear portion 64 is formed in the photovoltaic power generation means 6, the photovoltaic power generation means 6 is not arranged in the regions at both ends of the antenna 5. Therefore, for example, even when the support substrate of the photovoltaic means 6 is made of a magnetic material or a conductive material, the radio magnetic field satisfactorily reaches both ends of the antenna 5 from the opening on the photovoltaic means 6 side of the exterior case 1 and is good. Can receive radio waves.

In this case, since the antenna 5 is arranged in close proximity to or in contact with the dial 21, it becomes easy to receive radio waves incident from the dial 21 side. As described above, the shape of the photovoltaic power generation means is not limited to a circular shape or a semi-circular shape, and can be arbitrarily selected from a rectangular shape, a triangular shape, a deformed shape, various character shapes, etc., and is necessary for driving the driving means. It suffices if an area where a large amount of power can be generated can be secured. Therefore, the arrangement of the photovoltaic power generation means can be appropriately set in consideration of the arrangement of other components in the plan view of the radio wave correction clock.

Further, the shape of the outer case is also arbitrary, and is not limited to the cylindrical shape in each embodiment, and can be appropriately set according to the application and design, such as a square tubular shape or a deformed tubular shape. At this time, the shape of the photovoltaic power generation means may be formed according to the inner peripheral shape of the outer case, or may be different from the shape of the outer case. If the shape of the photovoltaic power generation means is formed along the inner peripheral shape of the outer case, the area of the photoelectric conversion portion can be increased, so that the power generation efficiency can be improved.

The outer case is not limited to the one having openings at both ends, and may be formed in a bottomed tubular shape, for example, as long as at least one end side has openings. The outer case may have a structure in which a plurality of metal exterior parts such as a body for holding the movement and a glass edge for holding the windshield are assembled and integrally formed. Further, the outer case is not limited to the one made of only a metal material, and may have a structure in which the surface of the outer case body made of synthetic resin is covered with a thin metal plate and integrated. The arrangement of the antenna in the movement can be arbitrarily set. For example, in the side view of the electronic timepiece with a wireless communication function, a component (component) of the timepiece may be arranged between the antenna and the lid member.

FIG. 10 shows a plan view showing a modified example of the radio wave correction clock, and FIG. 11 shows a cross-sectional view of XI-XI of FIG. In these FIGS. 10 and 11, the antenna 5 is arranged close to the dial 21 side in the movement 4 as in each embodiment. In the side view of the radio wave correction clock 100, a gear that is a part of the hour hand train wheel 44B driven by the stepping motor 43B is arranged between the antenna 5 and the train wheel receiver 47. That is, the hour hand train wheel 44B is arranged so as to overlap the antenna 5 in the plan view of the radio wave correction clock 100. Since the antenna 5 is arranged close to the dial 21 side, a certain amount of space is formed between the antenna 5 and the train wheel receiver 47. Therefore, the space efficiency of the radio wave correction clock 100 can be improved by arranging other components of the radio wave correction clock 100 using this space. As a result, the miniaturization of the radio wave correction clock 100 can be promoted. Further, in the plan view of the radio wave correction clock 100, since the hour hand wheel train 44B is arranged close to the antenna 5 side, a large space can be taken in the approximately 9 o'clock direction of the radio wave correction clock 100, for example, a crystal oscillator 412,413. Can be increased. By arranging the antenna 5 close to the dial 21 side in this way, the space between the antenna 5 and the train wheel receiver 47 can be effectively used. It should be noted that, between the antenna 5 and the train wheel receiver 47, not only the hour hand wheel train 44B but also any parts and members such as the switching unit 13, the circuit block 42, and the crystal oscillator unit 41 can be arranged.

The configuration of the radio wave correction clock is not limited to that of each embodiment, and any clock that corrects the display time by radio waves may be provided, for example, a date display function may be provided.

FIG. 12 shows a plan view showing a modified example of the radio wave correction clock, and FIG. 13 shows a cross-sectional view of XIII-XIII of FIG. In these FIGS. 12 and 13, a date wheel 45 is sandwiched between the movement 4 and the photovoltaic power generation means 6 inside the outer case 1. The date wheel 45 is an annular gear having an open central portion, and is made of a non-conductive and non-magnetic material such as plastic, inorganic glass, or paper material. The date wheel 45 is meshed with a train wheel (not shown) connected to the cylinder wheel 441, and is rotated at a predetermined speed by the rotation of the cylinder wheel 441. The date wheel 45 is marked with letters representing the day facing the dial 21 (not shown). The dial 21 is formed with an opening at approximately 3 o'clock in the sun window 212 that makes the characters of the sun wheel 45 visible from the outside.

The photovoltaic means 6 is formed in a circle having a radius larger than the inner peripheral radius of the date wheel 45, and its support substrate 62 covers the upper part of the inner peripheral portion of the date wheel 45 and is sandwiched between the light generating means 6 and the movement 4. This prevents the sun wheel from shifting in the cross-sectional direction. In other words, the photovoltaic power generation means 6 functions as a date wheel holder. Further, the radius of the photovoltaic power generation means 6 is formed to be smaller than the outer peripheral radius of the date wheel 45, whereby the annular portion of the date wheel 45 can be visually recognized from the dial 21. The support substrate 62 is made of a non-conductive and non-magnetic material such as a polyimide resin.

The antenna 5 is arranged so that its axial direction is substantially parallel to the direction connecting 3 o'clock and 9 o'clock, and is arranged inside the inner circumference of the date wheel 45. Therefore, in the plan view of the radio wave correction clock 100, the antenna 5 and the date wheel 45 do not overlap. Even in the radio wave correction watch 100 having such a configuration, since the support substrate 62 is made of a non-magnetic material, the antenna 5 can satisfactorily receive radio waves from the dial 21 side.

In addition, since the photovoltaic power generation means 6 also functions as a date wheel holder, the number of parts can be reduced, the thinning of the radio wave correction watch 100 can be promoted, and the manufacturing cost can be reduced. Since the antenna 5 and the sun wheel 45 are arranged so as not to overlap each other in the plan view of the radio wave correction clock 100, the antenna 5 can be used even when the sun wheel 45 is made of a conductive and magnetic metal material or the like. Good radio wave reception performance can be ensured.

Further, as shown in FIGS. 14 and 15, the antenna 5 may be arranged so as to overlap the date wheel 45 in a plan view of the radio wave correction clock 100. FIG. 14 is a plan view showing a modified example of the arrangement of the antenna of the present invention, and FIG. 15 is a cross-sectional view taken along the line XV-XV of FIG. As shown in FIGS. 14 and 15, in the plan view of the radio wave correction clock 100, the antenna 5 is arranged in the substantially 6 o'clock direction, and the radio wave correction clock 100 shown in FIGS. 12 and 13 Compared to the antenna 5, it is arranged on the outer peripheral side in the outer case 1. Due to this arrangement, a part of the antenna 5 overlaps the sun wheel 45 in the plan view of the radio wave correction clock 100. The sun wheel 45 is made of a plastic material such as polyacetal resin, and the sun window 212 is arranged at about 6 o'clock. According to such an arrangement, since the antenna 5 can be arranged on the outer peripheral side in the movement 4, the space inside the radio wave correction watch 100 can be effectively used, and the degree of freedom in the layout of the components can be improved. .. Further, since the antenna 5 is arranged on the outer peripheral side of the exterior case 1 having a larger space, the antenna 5 can be configured to be larger, so that the radio wave reception sensitivity of the antenna 5 can be improved.

Further, also in FIGS. 12, 13, 14, and 15, the center position N in the thickness direction (height direction) of the magnetic core 51 of the antenna 5 is the center position C in the thickness direction (height direction) of the movement 4. It is located closer to the dial 21 side. Further, the center position N of the magnetic core 51 in the thickness direction (height direction) is arranged closer to the dial 21 than the center position P in the thickness direction of the exterior case 1. The distance N2 from the center position N in the thickness direction of the magnetic core 51 (antenna 5) to the end opposite to the back cover 3 of the outer case 1 is from the center position N in the thickness direction of the magnetic core 51 (antenna 5). The distance to the back cover 3 is set smaller than N1. With such an arrangement of the antenna 5, the antenna 5 can satisfactorily receive radio waves from the opening on the dial 21 side of the outer case 1. In this case as well, as in FIGS. 10 and 11, components of the movement 4 such as the hour hand train wheel 44B may be arranged between the antenna 5 and the train wheel receiver 47.

The shape and configuration of the antenna are not limited to those shown in each embodiment, and may be appropriately set in consideration of the receiving performance of the antenna, the space of the outer case, and the like. For example, the antenna may be a so-called coreless antenna which is not provided with a magnetic core and is formed in a hollow tubular shape. Further, the magnetic core of the antenna is not limited to a stack of a large number of thin plate-shaped members, and may be formed in a prism or a columnar shape, for example. Further, the antenna is not limited to the one incorporated in the main plate, and may be mounted on, for example, a circuit board.

FIG. 16 is a side sectional view showing a modified example of the fixed structure of the antenna of the present invention, and FIG. 17 is an enlarged view of FIG. 16 in a side view. As shown in FIGS. 16 and 17, a circuit board 48 on which the crystal oscillator unit 41 and the circuit block 42 are mounted is provided in the movement 4. The circuit board 48 is arranged in contact with the lower surface of the main plate 46 (the surface facing the train wheel receiving 47), and is fixed to the main plate 46 by screwing or the like. An opening 481 is formed in the circuit board 48 at a position where the antenna 5 is arranged, the coil 52 of the antenna 5 is housed in the opening 481, and the magnetic core 51 is in contact with the circuit board 48. There is. The magnetic core 51 is fixed to the circuit board 48 by a method such as soldering, bonding, or rivet. According to such a fixed structure of the antenna 5, the antenna 5 is securely fixed to the circuit board 48, so that the antenna 5 does not move in the movement 4 due to the movement of the radio wave correction clock 100, and the coil 52 is broken or other Interference with components can be reliably prevented. As shown in FIG. 17, the angle θ formed by the line connecting the end of the antenna 5 and the upper end of the inside of the exterior case 1 and the axis L1 of the exterior case 1 must be 45 ° or more. Desirably, in such an arrangement, even if the outer case 1 is made of a metal material, for example, radio waves can reach the magnetic core 51 of the antenna 5 from the outside and receive the radio waves reliably.

Further, the shape of the antenna may be, for example, its magnetic core bent toward one end side of the outer case. 18 and 19 show modified examples of the shape of the antenna of the present invention. In FIG. 18, in the antenna 5, the magnetic core 51 is bent toward the dial 21 side on the outside of both ends of the coil 52 and is inclined toward the opening on the windshield 23 side of the metal outer case 1. Further, in FIG. 19, the entire magnetic core 51 and the coil 52 of the antenna 5 are curved in the direction of the dial 21, so that the end portion of the magnetic core 51 is arranged closer to the dial 21 side than the coil 52. At this time, the bending angle or the bending rate may be set so that the extension line of the antenna 5 end passes through one opening provided with the windshield 23 without interfering with the metal outer case 1. desirable.

In this way, if at least one end of both ends of the antenna 5 is bent or curved toward one end of the outer case, the radio wave entering from the opening of the outer case 1 becomes the magnetic core 51 of the antenna 5. It is easy to enter, so radio wave reception can be good. On the contrary, by bending the antenna to one opening side in this way, the radio wave reception performance can be improved, so that good radio wave reception can be ensured by the antenna even if the outer case is made smaller. Therefore, the miniaturization of the outer case can be promoted, and the diversification of the design can be promoted.

Regarding the planar relative positions of the antenna and the photovoltaic means, in the first embodiment, the entire antenna 5 overlaps with the photovoltaic means 6 in the plan view of the radio wave correction clock 100, and in the second embodiment, the antenna 5 and The photovoltaic power generation means 6 is arranged at a position where it does not overlap with each other in the plan view of the radio wave correction clock 100, but the antenna is not limited to this, even if a part of the antenna is arranged at a position where it overlaps with the support substrate of the photovoltaic power generation means, for example. Good.

FIG. 20 is a plan view showing a modified example of the arrangement of the antenna and the photovoltaic power generation means, and FIG. 21 is a partial side sectional view of FIG. 20. As shown in FIGS. 20 and 21, the photovoltaic power generation means 6 is formed with openings 65 at positions corresponding to the magnetic cores 51 at both ends of the antenna 5. Due to this arrangement, both ends of the antenna 5 do not overlap the support substrate 62 in the plan view of the radio wave correction clock 100. Therefore, even when the support substrate 62 is made of a metal material such as stainless steel, radio waves from the outside reach the antenna 5 through the opening 65, so that the radio waves can be received satisfactorily. Of course, if the support substrate 62 is made of a non-metal material such as a polyamide resin, radio waves can be more reliably received by the antenna 5. Further, since the opening 65 is formed only at the positions corresponding to both ends of the antenna 5 in the photovoltaic power generation means 6, a large light receiving area can be obtained, and good reception sensitivity of the antenna 5 can be ensured. , The power generation efficiency of the photovoltaic power generation means 6 can be improved.

At this time, as shown in FIG. 21, the magnetic cores 51 at both ends of the antenna 5 may be bent toward the support substrate 62, and according to such a configuration, radio waves can be received more reliably. Here, since the antenna 5 receives radio waves by penetrating a magnetic field from its end in the axial direction of the coil 52, it is particularly preferable that the (both) ends of the antenna 5 are not covered with a magnetic material. Therefore, for example, only the central portion of the antenna 5 may be covered with the support substrate. Even in such a case, since the magnetic field can enter from the end of the antenna 5, the antenna 5 can receive radio waves satisfactorily. In short, the antenna may be arranged at a position where at least a part of the antenna does not overlap with the support substrate in the plan view of the radio wave correction clock.

Further, in the third embodiment, both ends of the antenna are magnetically connected to the support substrate of the photopower generation means, but the present invention is not limited to this, and for example, only one of both ends of the antenna is a support substrate made of a highly permeable magnetic material. The antenna may be magnetically connected to the antenna, and in short, at least one of both ends of the antenna may be magnetically connected to a support substrate made of a highly permeable magnetic material.

The lateral relative positions of the antenna and the photovoltaic power generation means are not limited to the arrangement of the components of the movement 4 and the arrangement of the components of the movement 4, although the antenna 5 is arranged in contact with the photovoltaic power generation means 6 in the first embodiment. It may be set appropriately in consideration of the materials of the components of the radio wave correction clock 100. For example, if the radio waves reach both ends of the antenna, the antenna 5 is separated from the photovoltaic power generation means 6 to some extent, and the distance between the two is set. May be arranged with predetermined dimensions.

Further, in the second embodiment and the third embodiment, the antenna 5 and the photovoltaic power generation means 6 are arranged at positions where a part of the antenna 5 overlaps the photovoltaic power generation means 6 in the side view of the radio wave correction clock 100. Not limited to this, as described above, the antenna 5 and the photovoltaic power generation means 6 are arranged so as to have a predetermined dimension, and they do not have to overlap each other in the side view.

In each embodiment, the antenna is arranged in the side view of the radio wave correction clock so that the center position of the antenna is closer to the cover member side than the center position of the outer case. When the lid 3 has a shape protruding from the lower end of the outer case 1, the center position of the antenna is closer to the support substrate 62 (dial) than the center position of the distance from the upper end of the outer case 1 to the lower end of the back cover 3. It may be arranged on the 21 side and the windshield 23 side). When the back cover 3 is formed in a shape recessed above the lower end of the outer case 1, the center position of the antenna supports the center position of the distance from the upper end to the lower end of the outer case 1. It may be set so as to be on the board 62 side. In short, the center position of the antenna may be arranged on the support substrate side from the center position of the exterior case portion in which the exterior case and the lid member are combined, and at this time, the center position of the exterior case portion is the exterior case and the lid member. Of these, the center position at the position where the distance in the thickness direction (the cylinder axis direction of the outer case) is the largest may be set.

The shape of the antenna is not limited to that formed linearly in the plan view of the radio wave correction clock. FIG. 22 shows a plan view showing a modified example of the shape of the antenna. As shown in FIG. 22, the antenna 5 is formed in a substantially arc shape along the inner shape of the outer case 1. Further, the antenna 5 is arranged along the outer shape of the dial 21, and is arranged inside the dial 21 in a plan view of the radio wave correction clock 100. According to such a shape of the antenna 5, the dead space in the outer case 1 can be reduced as compared with the case where the antenna 5 is formed in a straight line, and the degree of freedom in layout of other components can be increased. Can be done.

Further, FIGS. 23 and 24 show a modified example of the arrangement of the antenna, FIG. 23 is a plan view of the radio wave correction clock 100, and FIG. 24 is a part of the radio wave correction clock 100 in FIG. 23. It is a side sectional view. In FIGS. 23 and 24, the antenna 5 is formed in a substantially arc shape along the inner shape of the outer case 1, and the outer peripheral side of the antenna 5 is formed in the outer case 1 and the inner frame 14 in the recess 1A. It is stored in. Due to this arrangement, a part of the antenna 5 overlaps with the exterior case 1 in the plan view of the radio wave correction clock 100. In this case, it is desirable that the area where the antenna 5 overlaps the exterior case 1 (the area of the radio wave correction clock 100 in a plan view) is less than half the area of the entire antenna 5. According to such an arrangement, the space in the outer case 1 can be effectively used while maintaining the good reception sensitivity of the antenna 5, and the degree of freedom in the layout of other components can be further increased.

Further, the coil of the electromagnetic motor is provided close to the back cover 3 in each embodiment, but the present invention is not limited to this, and for example, the center position in the thickness direction of the coil is larger than the center position in the thickness direction of the movement. It may be arranged on the side. Even in this case, if the coil and the antenna are placed at positions apart from each other in the plan view of the radio wave correction clock, or if the control to stop the radio wave reception by the antenna is performed when the electromagnetic motor is operating, the antenna 5 can be used. Since the radio waves can be received accurately, the object of the present invention can be achieved. In the second embodiment and the third embodiment, the material of the support substrate 62 is composed of a non-conductive and non-magnetic material such as a polyimide resin, an epoxy resin containing glass, and ceramics as in the first embodiment. It may be made of a conductive or magnetic material such as stainless steel. When the support substrate 62 is made of a non-magnetic material, the amount of magnetic material around the antenna 5 is reduced, so that reception by the antenna 5 is more reliable.

Further, in the third embodiment, only the photovoltaic power generation means 6A may be made of a non-conductive and non-magnetic material. In each embodiment, the switching unit 13 and the train wheel 44 are arranged between the battery and the antenna, but the present invention is not limited to this, and for example, a crystal oscillator unit 41, a circuit block 42, or the like may be arranged. Even in this case, it is possible to minimize the influence of the metal outer can case of the battery on the magnetic field existing around the antenna. In short, the battery and the antenna may be arranged so as to sandwich at least one of a switching unit, a train wheel, a crystal oscillator unit, and a control means.

Even when these members are not arranged between the battery and the antenna, the antenna can receive radio waves by changing the orientation of the antenna and the material of the outer can case of the battery. Can be achieved. The driving means is not limited to the one provided with an electromagnetic motor, and any structure capable of driving the time display means can be adopted. For example, a piezoelectric actuator driven by vibration of a piezoelectric element may be used. In this case, for example, a plate-shaped piezoelectric element is attached to a substantially rectangular plate-shaped reinforcing plate, and protrusions are formed on the reinforcing plate to form a piezoelectric actuator. A rotating body such as a rotor is engaged with the train wheel, and the protrusion of the piezoelectric actuator is brought into contact with the side surface of the rotor. When an AC voltage is applied to the piezoelectric element, the piezoelectric element vibrates, so the protrusions repeatedly press the rotor in the tangential direction to rotate the rotor. The time display means may be driven by transmitting this rotational motion in a train wheel.

According to this driving means, since the piezoelectric actuator does not generate a magnetic field when driven, the antenna can receive accurate radio waves without affecting the magnetic field existing around the antenna. The time display means is not limited to those provided with an hour hand and a minute hand, and may be, for example, only the hour hand or only the minute hand, or may be provided with a second hand. The dial does not have to be decorated with letters or numbers. Further, the dial does not necessarily have to be provided. For example, when the dial is not provided, the photovoltaic power generation means may be used as the dial. In this case, the photovoltaic power generation means constitutes a dial using a translucent material such as inorganic glass for the support substrate, and provides a photoelectric conversion unit on the surface of the support substrate on the lid member side. It may be configured. Further, in this case, the surface of the support substrate, which is the dial, on the cover member side may be decorated with characters, scales, patterns, and the like. Even with such a configuration, if the antenna is provided so as to face or be close to the surface on the lid member side with respect to the photovoltaic power generation means, the antenna is provided on one opening side of the outer case, that is, photovoltaic power generation. Radio waves can be received well from the means side.

The material of the train wheel may be arbitrarily set in consideration of the arrangement of the antenna, the transmission power, etc., for example, a conductive and magnetic material such as stainless steel, and a non-conductive and non-magnetic material such as plastic and ceramics. It may be composed of a material. An electronic clock with a wireless communication function is not limited to an analog clock having a dial and a pointer, and as shown in FIG. 25, for example, a digital clock having a liquid crystal panel 2A and a parting plate 2B as a time display means for digitally displaying the time. The clock may be 100A. Further, the electronic clock with a wireless communication function may have, for example, a chronograph function or an alarm function in addition to the time display function by the time display means.

In addition, electronic watches with wireless communication functions are not limited to radio wave correction watches that receive standard radio waves from the outside and correct the display time, but also watches that have the function of transmitting wireless information to the outside and receive wireless information and receive wireless information. It may be a clock having a function of being able to transmit. For example, the electronic clock with a wireless communication function may be a clock having a built-in non-contact IC card and performing wireless information communication (contactless data communication) with the outside via an antenna.

The best configuration, method, and the like for carrying out the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, although the present invention is particularly illustrated and described primarily with respect to a particular embodiment, it does not deviate from the scope of the technical idea and purpose of the present invention and has a shape relative to the embodiments described above. , Materials, quantities, and other detailed configurations can be modified by those skilled in the art. Therefore, the description that limits the shape, material, etc. disclosed above is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. Therefore, those shapes, materials, etc. The description by the name of the member excluding a part or all of the limitation such as is included in the present invention.

The electronic clock with wireless communication function of the present invention can be used as a radio wave correction clock that receives standard radio waves from the outside and corrects the display time, and also has a built-in non-contact IC card for non-contact data communication with the outside via an antenna. It can also be used for clocks and the like.

<figref num="1">It is a top view of the radio wave correction timepiece which concerns on 1st Embodiment of this invention.</figref><figref num="2">FIG. 2 is a sectional view taken along line II-II of FIG.</figref><figref num="3">FIG. 3 is a sectional view taken along line III-III of FIG.</figref><figref num="4">It is a block diagram of the structure of the radio wave correction timepiece which concerns on the 1st Embodiment.</figref><figref num="5">It is a top view of the radio wave correction timepiece which concerns on the 2nd Embodiment of this invention.</figref><figref num="6">FIG. 5 is a sectional view taken along line VI-VI of FIG.</figref><figref num="7">It is a top view of the radio wave correction timepiece which concerns on 3rd Embodiment of this invention.</figref><figref num="8">It is a partial cross-sectional view along the line VIII-VIII of FIG.</figref><figref num="9">It is a top view of the radio wave correction timepiece which shows the modification of the photovoltaic power generation means of this invention.</figref><figref num="10">It is a top view which shows the modification of the radio wave correction timepiece of this invention.</figref><figref num="11">It is XI-XI sectional view of FIG.</figref><figref num="12">It is a top view which shows another modification of the radio wave correction timepiece of this invention.</figref><figref num="13">It is a cross-sectional view of XIII-XIII of FIG.</figref><figref num="14">It is a top view which shows the modification of the arrangement of the antenna of this invention.</figref><figref num="15">It is a cross-sectional view of XV-XV of FIG.</figref><figref num="16">It is a side sectional view which shows the modification of the fixed structure of the antenna of this invention.</figref><figref num="17">It is a partial side sectional view which shows the modification of the fixed structure of the antenna of this invention.</figref><figref num="18">It is a partial side sectional view which shows the modification of the antenna of this invention.</figref><figref num="19">It is a partial side sectional view which shows another modification of the antenna of this invention.</figref><figref num="20">It is a top view which shows the modification of the arrangement of the antenna and the photovoltaic power generation means of this invention.</figref><figref num="21">It is a partial side sectional view of FIG.</figref><figref num="22">It is a top view which shows the modification of the shape of the antenna of this invention.</figref><figref num="23">It is a top view which shows the further modification of the arrangement of the antenna of this invention.</figref><figref num="24">It is a partial side sectional view of FIG. 23.</figref><figref num="25">It is a figure which shows the modification of the electronic clock with a wireless communication function of this invention.</figref>

Code description

1 ... exterior case, 2 ... time display means, 3 ... back cover (lid member), 4 ... movement, 5 ... antenna, 6,6A, 6B, 6C ... photovoltaic power generation Means, 21 ... dial, 43A ... minute hand stepping motor, 43B ... hour hand stepping motor, 45 ... day wheel, 46 ... main plate, 47 ... train wheel receiver, 51. .. Magnetic core, 52 ... Coil, 61,61A, 61B, 61C ... Photoelectric conversion element (photoelectric conversion part), 62,62A, 62B, 62C ... Support board, 100 ... Radio correction clock, 425 ... motor drive circuit, 431A, 431B ... drive coil, 432A, 432B ... stator.