JP6491916B2 - clock - Google Patents

Description

  The present invention relates to a timepiece having a function of receiving radio waves.

  Conventionally, with respect to an antenna used for a watch that receives radio waves such as standard radio waves, there have been various techniques for improving radio wave reception performance. Specifically, for example, there has conventionally been a technique related to an antenna formed by providing a conductive ink layer on decorative printing applied to the lower surface of a watch glass and providing a metal plating layer on the conductive ink layer. (For example, see Patent Document 1 below.)

  More specifically, for example, conventionally, there has been a technology related to an antenna device in which a metal pattern that circulates at a predetermined distance from the dial is provided on the dial side of the display window provided in the conductive case. (For example, see Patent Document 2 below.) Further, specifically, for example, there has conventionally been a technique in which a conductor layer having a swivel structure (a structure that circulates around a certain place) having the stacking direction as an axial direction as a whole (for example, the following patent document) 3).

  Specifically, conventionally, for example, a GPS antenna having a ring-shaped dielectric substrate and a ring-shaped antenna electrode formed on the surface of the dielectric substrate is provided between the cover glass and the ground plate. There has been a technique in which radio waves entering from the cover glass side are reflected by a ground plate and input to an antenna electrode (for example, see Patent Document 4 below). More specifically, conventionally, for example, there has been a technique in which an antenna is shaped like a character and the antenna itself has a function of information transmission (see, for example, Patent Document 5 below).

JP 09-307329 A JP 2008-205531 A JP 2003-315475 A Japanese Patent No. 5493527 JP 2010-186306 A

  However, the use of a watch as an ornament is also regarded as important, and the conventional technique has a problem that it is inferior in consideration of aesthetics (decorative properties). In addition, the conventional technology has a problem that a configuration that is not related to decorativeness for ensuring reception performance is easily recognized by the naked eye of the user and is inferior in appearance.

  On the other hand, if an antenna is provided on the back side of the dial to ensure aesthetics, the reception performance will be reduced, and if the antenna is enlarged to compensate for the reduced reception performance, it will be difficult to reduce the size and thickness of the watch. turn into. Although it is conceivable to make the antenna thinner for aesthetic reasons, the wiring resistance increases, so that a loss of propagation current occurs and it becomes difficult to obtain sufficient antenna characteristics.

  Further, the frequency of the radio wave received by the antenna is determined by the length of the antenna. As in the technique described in Patent Document 5 described above, the antenna has a shape such as a letter, and the antenna itself has a function of transmitting information. If such a conventional technique is applied to a watch, the degree of freedom in design is limited, and it becomes difficult to ensure decorativeness.

  An object of the present invention is to provide a timepiece having excellent aesthetics and good reception performance in order to eliminate the above-described problems caused by the prior art.

  In order to solve the above-described problems and achieve the object, a timepiece according to the present invention includes a case provided with a display window, a notation unit that represents at least one of characters, symbols, and figures, and an arbitrary one in the case. An antenna provided at a position, wherein the notation portion is a conductive member, the antenna includes a plurality of antenna wirings, and the notation portion includes a plurality of antenna wirings. It contacts at least two of the antenna wires.

  The timepiece according to the present invention further includes a windshield for closing the display window and a dial provided in the case in the above invention, wherein the antenna is on the dial side of the windshield. It is provided in the peripheral part of the said windshield.

  In the timepiece according to the present invention as set forth in the invention described above, the antenna is provided on the windshield in the order of the notation portion and the antenna wiring.

  The timepiece according to the present invention further includes a windshield for closing the display window and a dial provided in the case in the above invention, wherein the antenna is on the windshield side of the dial. It is provided in the peripheral part of the said dial.

  In the timepiece according to the present invention as set forth in the invention described above, the antenna is provided on the dial in the order of the antenna wiring and the notation.

  In the timepiece according to the present invention as set forth in the invention described above, the notation unit is a city display in which a plurality of city names or area names are arranged in an order based on a time difference.

  In the timepiece according to the present invention as set forth in the invention described above, the notation is a time difference display indicating a time difference with respect to a reference time.

  In the timepiece according to the present invention as set forth in the invention described above, the notation section is a time display indicating a time.

  In addition, the timepiece according to the present invention is characterized in that, in the above-described invention, a mesh wiring or a transparent electrode provided between the plurality of antenna wirings and connected to the plurality of antenna wirings is provided.

  According to the timepiece of the present invention, there is an effect that it is possible to provide a timepiece having excellent aesthetics and good reception performance.

It is explanatory drawing (the 1) which shows the structure of the timepiece of Embodiment 1 concerning this invention. It is explanatory drawing (the 2) which shows the structure of the timepiece of Embodiment 1 concerning this invention. It is explanatory drawing (the 1) which shows the structure of the windshield of Embodiment 1 concerning this invention. It is explanatory drawing (the 2) which shows the structure of the windshield of Embodiment 1 concerning this invention. It is explanatory drawing (the 3) which shows the structure of the windshield of Embodiment 1 concerning this invention. It is explanatory drawing which shows the structure of the windshield with which the timepiece of Embodiment 2 concerning this invention is provided. It is explanatory drawing which shows the positional relationship of antenna wiring and a time difference display. It is explanatory drawing which shows the structure of the windshield with which the timepiece of Embodiment 3 concerning this invention is provided.

  Hereinafter, preferred embodiments of a timepiece according to the present invention will be described in detail with reference to the accompanying drawings.

<Embodiment 1>
First, the configuration of the timepiece according to the first embodiment of the present invention will be described. The timepiece 100 according to the embodiment of the present invention includes at least one of a GPS reception operation for receiving a radio wave from a GPS satellite, a communication operation for performing communication with another electronic device, and a standard radio wave reception operation including a standard time information signal. You can do one.

(Clock structure)
1 and 2 are explanatory views showing the configuration of the timepiece according to the first embodiment of the present invention. FIG. 1 shows a state in which the timepiece according to the first embodiment of the present invention is viewed from the front. FIG. 2 schematically shows a cross section of the timepiece according to the first embodiment of the present invention cut along the paper front and back direction in FIG.

  1 and 2, the timepiece 100 includes a case (exterior case) 101 that forms an exterior. The case 101 is formed using, for example, a metal material and has a substantially cylindrical shape with both ends opened. In this embodiment, the display window of the embodiment according to the present invention can be realized by one of the openings provided at both ends of the case 101 (opening on the upper side in FIG. 2) 101a.

  The case 101 is not limited to a substantially cylindrical shape with both ends opened. The case 101 only needs to have an opening 101a that realizes a display window at least on one end side (front side) in the axial direction, and has a bottomed cylindrical shape with the other end side (back side) in the axial direction closed ( It may be a so-called one-piece structure.

  The case 101 is provided with an operation unit 102. The operation unit 102 can be realized by a crown, for example. The position of the crown with respect to the case 101 can be adjusted to a plurality of stages (for example, three stages) by being pulled from the case 101. Further, the operation unit 102 may be realized by a button, for example.

  A dial plate 103 is provided inside the case 101. A dial ring 104 is provided on the outer periphery of the dial 103. The dial plate 103 and the dial ring 104 can be formed using, for example, metal materials of similar colors. Alternatively, the dial plate 103 and the dial ring 104 may be formed using a polymer material called plastic or the like, for example. The dial plate 103 and the dial ring 104 may be formed using different materials, or may be formed using different color materials.

  The dial 103 is provided with an index (index) 107 indicating the position of the pointer 106 indicating the time, that is, the time indicated by the pointer 106. Specifically, the pointer 106 can be realized by an hour hand 106a, a minute hand 106b, a second hand 106c, and the like, for example. The pointer 106 can be formed using, for example, a polymer material called a metal material or plastic.

  The index 107 is disposed on the circumference of the dial plate 103 around the axis of the pointer 106. The index 107 can be realized by, for example, letters, numbers, symbols, and the like. The index 107 is not limited to letters, numbers, and symbols, and may be realized by a protrusion provided on the dial plate 103, for example. The index 107 can be formed using a metal material, for example. Alternatively, the index 107 may be printed on the dial plate 103 or realized by providing another member such as a metal.

  For example, the index 107 can be arranged on the same circumference around the rotation center of the pointer 106. In this case, for example, each index 107 is arranged such that at least a part thereof is positioned on the outer circumferential side of the rotation range of the pointer 106, that is, the circle formed by the locus of the tip of the pointer 106 due to the rotation of the pointer 106. can do.

  The indexes 107 are not limited to those in which all the indexes 107 are arranged on the same circumference around the rotation center of the pointer 106. In the timepiece 100 according to the embodiment of the present invention, for example, the index 107 is arranged such that at least a part of the index 107 is arranged within the rotation range of the pointer 106 and another part of the index 107 is larger than the rotation range of the pointer 106. It may be arranged on the outer peripheral side.

  In the timepiece 100, the hands 106 constitute a time display unit together with the dial 103 provided with the index 107. The time display unit displays the time by rotating (handing) the pointer 106 by the driving mechanism. The timepiece 100 may include a date plate as the pointer 106 in addition to the hour hand 106a, the minute hand 106b, and the second hand 106c.

  A windshield 109 is provided on one end side (front side) of the case 101 having a substantially cylindrical shape. The windshield 109 is supported at the periphery by a bezel 110. The windshield 109 is formed using a light-transmitting material and has a substantially disk shape. Specifically, the windshield 109 can be formed using materials such as sapphire glass (sapphire crystal), inorganic glass (mineral glass), acrylic glass (plastic such as acrylic), and the like. The bezel 110 has an annular shape having an inner diameter substantially the same as the diameter of the windshield 109, and can be formed using, for example, a metal material.

  A back cover member 201 is provided on the other end side (back side) of the case 101. The back cover member 201 can be formed using, for example, a metal material. Alternatively, the back cover member 201 may be formed using a polymer material called plastic or the like. The back cover member 201 can be attached to the case 101 by using various known techniques such as a screw back method, a fitting method, and a screw lid method. A method of attaching the back cover member 201 to the case 101 can be easily realized by using various known techniques, and thus description thereof is omitted.

  In a space surrounded by the case 101, the back cover member 201, and the dial plate 103, a driving mechanism (all of which is not shown) configured by a train wheel, a motor, or the like that rotationally drives the pointer 106 is provided. The pointer 106 is connected to a motor via a train wheel, and rotates by receiving the driving force of the motor.

  The timepiece 100 rotationally drives the hands 106 by a driving mechanism on the surface side of the dial plate 103, that is, on the opening 101 a side of the dial plate 103, and displays the current time and the like in an analog manner according to the position of the hands 106 relative to the index 107. In the timepiece 100, the movement of the first embodiment according to the present invention can be realized by the dial 103 provided with the index 107, the hands 106, the driving mechanism (wheel train or motor), and the like.

  The timepiece 100 includes a control unit (not shown). The control unit drives the motor, converts a radio wave received from the outside into electrical energy, and adjusts the position of the pointer 106 based on the received radio wave. Specifically, the control unit can be realized by a microcomputer including a CPU and a memory, for example.

  On the rear surface 109 a of the windshield 109, that is, on the movement-side surface 109 a of the windshield 109, an antenna wiring 111 and a notation portion 112 are provided. Below, the structure of the windshield 109 including the antenna wiring 111 and the notation part 112 is demonstrated using FIG. 3, FIG. 4A and FIG. 4B.

(Configuration of windshield 109)
The configuration of the windshield 109 will be described. 3, 4A and 4B are explanatory views showing the configuration of the windshield 109 according to the first embodiment of the present invention. FIG. 3 shows the windshield 109 according to the first embodiment of the present invention as viewed from the front of the timepiece 100. 4A schematically shows an AA cross section in FIG. 3, and FIG. 4B schematically shows a BB cross section in FIG.

  3, 4 </ b> A, and 4 </ b> B, the rear surface of the windshield 109, that is, the movement-side surface (back surface) 109 a of the windshield 109 is located inside the case 101 and faces the dial plate 103. A city display 301 is provided on the back surface 109 a of the windshield 109. The city display 301 implements the notation unit 112 of the first embodiment according to the present invention.

  The city display 301 is configured by arranging a plurality of city names or area names along the peripheral edge of the windshield 109 in the order based on the time difference. The time difference can be specified based on, for example, UTC (Coordinated Universal Time). UTC is a universal standard time, and always represents an accurate time based on the international atomic time recorded by a cesium atomic clock. UTC represents a time adjusted in leap seconds to correct the difference between international atomic time and the time based on the rotation of the earth (universal time).

  The city display 301 of the first embodiment is based on the time and UTC and the time difference in the city or region specified by each city name or each region name constituting the city display 301, and the city or region having a smaller time difference is 12:00. They are arranged so as to be located at a position close to the position (the upper side in the drawing in FIG. 3). The city display 301 represents a time difference of 24 hours per lap. Specifically, the city display 301 shown in FIG. 3 includes, for example, a city displayed at 12 o'clock (LON: London) and a city displayed at 6 o'clock (AKL: Auckland) as 12 It shows that there is a time difference.

  The city display 301 is realized by a conductive member 301a formed using a conductive material. A plurality of conductive members 301a are provided. Specifically, the conductive member 301a forming the city display 301 can be formed, for example, by providing a conductive material on the back surface 109a of the windshield 109 by printing. More specifically, the conductive member 301a constituting the city display 301 can be provided on the back surface 109a of the windshield 109 by printing using a technique such as pad printing or silk screen printing (decorative printing).

  Specifically, the conductive member 301a forming the city display 301 is formed using, for example, an emblem formed using a conductive material such as metal or a conductive material such as metal. Alternatively, a member obtained by cutting the sheet-like member may be provided by being attached to the rear surface 109 a of the windshield 109.

  The conductive member 301 a forming the city display 301 is formed using a material having a color opposite to that of the dial 103 or the dial ring 104. Thereby, the favorable visibility of the city display 301 is securable. When the color of the dial 103 and the color of the dial ring 104 are different, the conductive member 301a forming the city display 301 overlaps the city display 301 in the axial direction of the pointer 106 in the dial 103 and the dial ring 104. It is preferable to form using a material having a color opposite to the above color. Thereby, the favorable visibility of the city display 301 is securable.

  An antenna wiring 111 is provided on the back surface 109 a of the windshield 109. A plurality of antenna wirings 111 are provided concentrically (two in the timepiece 100 of the first embodiment). In the first embodiment, the antenna wiring 111 (first antenna wiring 302) on the outermost periphery side and the antenna wiring 111 (second antenna wiring 303) on the inner periphery side with respect to the antenna wiring 111 are two. An antenna wiring 111 is provided. The antenna wiring 111 is provided at the peripheral edge of the windshield 109. The antenna wirings 111 each have a shape that circulates along the periphery of the windshield 109.

  The antenna wiring 111 is in contact with the conductive member 301 a that forms the city display 301. In the timepiece 100 according to the first embodiment, the antenna wiring 111 is in contact with the upper end and the lower end of the character (conductive member 301a) formed by the city display 301, respectively. Specifically, among the antenna wiring 111, the first antenna wiring 302 is in contact with the upper end of the character (conductive member 301a) formed by the city display 301, and the second antenna wiring 303 is the character formed by the city display 301. It is in contact with the lower end of (conductive member 301a).

  For example, as shown in FIG. 4A, the first antenna wiring 302 and the second antenna wiring 303 can be brought into contact with each other by overlapping with a conductive member 301a forming a city display 301 in the thickness direction of the windshield 109. it can. In this case, only the first antenna wiring 302 and the second antenna wiring 303 are provided on the back surface 109a of the windshield 109 in the portion where the conductive member 301a forming the city display 301 is not provided, as shown in FIG. 4B. Exists.

  Each of the antenna wirings 111 is formed using a conductive material. Thereby, the antenna wiring 111 is electrically connected to the conductive member 301 a forming the city display 301. Here, an antenna that receives radio waves from the outside is provided by the antenna wiring 111 (first antenna wiring 302 and second antenna wiring 303) and the city display 301 (conductive member 301a forming the city display 301). Composed.

Specifically, the antenna wiring 111 can be formed by a metal mesh, for example. Alternatively, the antenna wiring 111 may be formed using a wide gap semiconductor, for example, ITO (tin, which is an inorganic compound of indium (III) oxide (In ₂ O ₃ ) and tin (IV) oxide (SnO ₂ ). A transparent conductive film such as -doped indium oxide (indium tin oxide) can be used.

  The antenna wiring 111 can be formed, for example, by providing a conductive material on the back surface 109a of the windshield 109 by printing. Or, specifically, the antenna wiring 111 may be formed by, for example, drawing a wire in a shape that circulates along the periphery of the windshield 109. Or, specifically, the antenna wiring 111 may be formed by, for example, a laser vapor deposition method.

  In the antenna wiring 111, the thickness of the antenna wiring 111 at a position overlapping the city display 301 is set to be equal to or smaller than the thickness of the characters indicated by the city display 301. As a result, the antenna wiring 111 can be hidden by the city display 301, and when the user views the dial plate 103, the antenna wiring 111 protruding from the lower side of the city display 301 is visually observed, so that aesthetics (aesthetics) can be achieved. Can be prevented from decreasing.

  In the antenna wiring 111, the thickness of the antenna wiring 111 at a position that does not overlap with the city display 301 is sufficiently thinner than the thickness of the characters indicated by the city display 301. Specifically, the thickness of the antenna wiring 111 at a position that does not overlap with the city display 301 is preferably, for example, 30 μm or less. As a result, it is possible to prevent the antenna wiring 111 from becoming difficult to see and to reduce the aesthetics (aesthetics) due to the visual observation of the antenna wiring 111.

  The material for forming the antenna wiring 111 is formed using a material having the same color as the color of the dial plate 103 and the dial ring 104. Thereby, the antenna wiring 111 can be made inconspicuous. When the color of the dial plate 103 and the color of the dial ring 104 are different, the conductive member 301 a forming the antenna wiring 111 is a portion of the dial plate 103 and the dial ring 104 that overlaps the city display 301 in the axial direction of the pointer 106. It is preferable to use a material having a color similar to the above color. Thereby, the antenna wiring 111 can be made inconspicuous.

  In the timepiece 100 of the first embodiment, the antenna wiring 111 and the city display 301 are both provided by printing the conductive member 301 a on the back surface 109 a of the windshield 109. In this case, when manufacturing the timepiece 100, the city display 301 is first printed on the back surface 109a of the windshield 109, and then the antenna wiring 111 is printed. By printing in the order of “city display 301” → “antenna wiring 111” on the back surface 109 a of the windshield 109, the city display 301 is positioned on the front side of the antenna wiring 111 in the timepiece 100. Thereby, also when providing the city display 301 and the antenna wiring 111 in the position which overlaps, the visibility of the city display 301 is securable.

  In such a timepiece 100, when a current flows through the antenna when receiving radio waves, the first antenna wiring 302 and the second antenna wiring 303 are short-circuited via the city display 301. Accordingly, the potential of the first antenna wiring 302 and the potential of the second antenna wiring 303 can be made equal. That is, the first antenna wiring 302 and the second antenna wiring 303 are formed with a thickness that is difficult to visually recognize, and the two antenna wirings 111 are short-circuited by the conductive member 301 a that also serves as the city display 301. In addition, a single antenna having a penetrating pattern in which the antenna wirings 111 are cut out while leaving the conductive member 301a can be formed. As a result, the antenna wiring 111 can be made difficult to visually recognize, and the wiring resistance can be lowered as compared with the case where the antenna configuration is configured only by the antenna wiring that is difficult to visually recognize. That is, sufficient antenna characteristics can be ensured by suppressing the loss of the propagation current of the antenna.

  As described above, the timepiece 100 according to the first embodiment of the present invention includes the case 101 provided with the opening 101a that realizes the display window, the time accommodated in the case 101, and the time measured. A movement to be displayed on the window side, a windshield 109 which is formed using a light-transmitting material and which is provided in the case 101 and closes the display window, and a plurality of concentric circular shapes provided at arbitrary positions in the case 101 Arbitrary information is provided by the conductive member 301a in which the antenna wiring 111 and at least two of the plurality of antenna wirings 111 are in contact with each other, and a conductive material is formed into at least one of a character, a symbol, or a figure. A notation unit 112 (for example, a city display 301, a time difference display 501 (see FIG. 5), and a number 701 indicating a time (see FIG. 7). It is characterized by comprising the like), a.

  According to the timepiece 100 of the first embodiment of the present invention, a plurality of antenna wirings 111 are short-circuited by the conductive member 301a constituting the notation portion 112, and the plurality of antenna wirings 111 are in contact with the same conductive member 301a. Can be equalized. As a result, an antenna with a penetrating pattern in which a plurality of antenna wirings 111 and conductive members 301a that are in contact with these antenna wirings 111 are left between the antenna wirings 111 leaving the conductive member 301a. Can be configured.

  The frequency of the radio wave received by the antenna is determined by the length of the antenna. In a solid pattern antenna in which a conductive material is provided between the antenna wirings 111, a strong current flows in the peripheral portion when receiving the radio wave. . For this reason, even with a hollow pattern antenna, radio waves having the same frequency as the solid pattern antenna can be received without degrading the reception performance as compared with the solid pattern antenna.

  By narrowing each antenna wiring 111 in such a hollow pattern antenna so that it is difficult to visually recognize with the naked eye, the presence of the antenna wiring 111 that can be visually recognized makes it possible to reduce a desired frequency. Can be received well. As a result, according to the timepiece 100 of the embodiment of the present invention, it is possible to achieve both of ensuring decorativeness and ensuring reception performance (reception sensitivity), and providing the timepiece 100 having excellent aesthetics and good reception performance. can do.

  Further, in the timepiece 100 according to the first embodiment of the present invention, the plurality of antenna wirings 111 are respectively provided on the movement side of the windshield 109, that is, the back surface 109a of the windshield 109 and at the peripheral portion of the windshield 109. The notation portion 112 is provided on the rear surface 109 a of the windshield 109 and at the peripheral edge portion of the windshield 109.

  According to the timepiece 100 of the first embodiment of the present invention, the antenna wiring 111 and the notation 112 are provided on the rear surface 109a of the windshield 109 and at the peripheral edge of the windshield 109, thereby displaying on the front surface side of the dial 103. It is possible to ensure good reception performance without degrading the visibility of the received time. Thereby, it is possible to provide the timepiece 100 which is excellent in aesthetics and excellent in reception performance.

  Further, according to the timepiece 100 of the first embodiment of the present invention, the antenna wiring 111 and the notation 112 can be protected by the windshield 109 by providing the antenna wiring 111 and the notation 112 on the back surface 109a of the windshield 109. It is possible to prevent the antenna wiring 111 and the notation 112 from being damaged by an external impact or the like. Thereby, durability of the timepiece 100 can be ensured.

  In the timepiece 100 according to the first embodiment of the present invention, the antenna wiring 111 and the notation portion 112 print the conductive material on the windshield 109 in the order of “antenna wiring 111” → “notation portion 112”. It is characterized by being provided.

  According to the timepiece 100 of the first embodiment of the present invention, by providing the antenna wiring 111 and the notation 112 by printing on the back surface 109a of the windshield 109, the highly accurate antenna wiring 111 and the notation 112 can be easily formed. can do. As a result, the burden on the manufacturer in manufacturing the timepiece 100 can be reduced.

  The timepiece 100 according to the first embodiment of the invention is characterized in that the notation unit 112 is a city display 301 in which a plurality of city names or area names are arranged in an order based on a time difference.

  According to the timepiece 100 of the first embodiment of the present invention, the city display 301 used for realizing the function of the timepiece 100 is formed using a conductive material, and is used as the notation unit 112, whereby the first antenna The first antenna wiring 302 and the second antenna wiring 303 can be short-circuited without separately providing a member for short-circuiting the wiring 302 and the second antenna wiring 303. Thereby, it is possible to prevent the visibility of the dial plate 103 and the like from being lowered, and to provide the timepiece 100 which has excellent aesthetics and good reception performance.

<Embodiment 2>
Next, a timepiece according to a second embodiment of the present invention will be described. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 5 is an explanatory diagram showing the configuration of the windshield provided in the timepiece according to the second embodiment of the present invention. FIG. 5 shows a state in which the windshield 109 provided in the timepiece 100 according to the second embodiment of the present invention is viewed from the front of the timepiece 100. In FIG. 5, the windshield 109 provided in the timepiece 100 according to the second embodiment of the present invention is provided with a time difference display 501 on the back surface 109a. The time difference display 501 implements the notation unit 112 according to the second embodiment of the present invention.

  Similar to the city display 301 described above, the time difference display 501 is realized by a conductive member 301a formed using a conductive material. The conductive member 301a forming the time difference display 501 is provided on the back surface 109a of the windshield 109, for example, by printing using various techniques as described above. Alternatively, the conductive member 301a forming the time difference display 501 is, for example, an emblem formed using a conductive material such as metal, or a sheet-shaped member formed using a conductive material such as metal. You may implement | achieve by providing the cut member etc. by affixing on the back surface 109a of the windshield 109, etc.

  In the time difference display 501, the conductive members 301 a that form letters and numbers indicating the magnitude of the time difference with respect to UTC, which is the reference time, are arranged along the peripheral portion of the windshield 109 in an order based on the magnitude of the time difference. It is comprised by. The time difference display 501 of the second embodiment is arranged so that the conductive members 301a that form letters and numbers indicating that the time difference with respect to UTC is small are positioned closer to the 12 o'clock position. The time difference display 501 represents a time difference of 24 hours per round. Specifically, the time difference display 501 shown in FIG. 5 indicates that the time difference displayed at the 6 o'clock position is 12 hours, for example, with respect to the UTC displayed at the 12 o'clock position.

  The conductive member 301 a forming the time difference display 501 is formed using a material having a color opposite to that of the dial plate 103 or the dial ring 104. Thereby, the favorable visibility of the time difference display 501 is securable. When the color of the dial 103 and the color of the dial ring 104 are different, the conductive member 301a forming the time difference display 501 is a portion of the dial 103 and the dial ring 104 that overlaps the time difference display 501 in the axial direction of the pointer 106. It is preferable to form using a material having a color opposite to the above color. Thereby, the favorable visibility of the time difference display 501 is securable.

  An antenna wiring 111 is provided on the back surface 109 a of the windshield 109. In the second embodiment, the first antenna wiring 302 which is the outermost antenna wiring 111 and the second antenna wiring 303 which is the inner antenna wiring 111 from the first antenna wiring 302 , Is provided. In the antenna wiring 111, the thickness of the antenna wiring 111 at a position overlapping the time difference display 501 is equal to or less than the thickness of the characters indicated by the time difference display 501. As a result, the antenna wiring 111 at a position overlapping the time difference display 501 can be hidden by the time difference display 501, and when the user views the dial plate 103, the antenna wiring 111 protruding from the lower side of the time difference display 501 is visually observed. This can prevent a decrease in aesthetics (aesthetics).

  Of the antenna wiring 111, the thickness of the antenna wiring 111 at a position that does not overlap the time difference display 501 is sufficiently thinner than the thickness of the characters indicated by the time difference display 501. Specifically, the thickness of the antenna wiring 111 at a position that does not overlap with the time difference display 501 is preferably 30 μm or less, for example. As a result, it is possible to prevent the antenna wiring 111 from becoming difficult to see and to reduce the aesthetics (aesthetics) due to the visual observation of the antenna wiring 111.

  The position where the antenna wiring 111 and the time difference display 501 are in contact with each other is not limited to the upper and lower ends of the characters made by the time difference display 501. The position of the antenna wiring 111 (the distance between the first antenna wiring 302 and the second antenna wiring 303) is adjusted as shown in FIG. 6, for example, according to the pattern formed by the notation 112 such as the time difference display 501. May be.

  FIG. 6 is an explanatory diagram showing the positional relationship between the antenna wiring 111 and the time difference display 501. In FIG. 6, the antenna wiring 111 is in contact with the character indicated by the conductive member 301a forming the time difference display 501 in the vicinity of the center in the vertical direction of the character. Specifically, the second antenna wiring 303 illustrated in FIG. 6 is closer to the first antenna wiring 302 than the second antenna wiring 303 in the time difference display 501 illustrated in FIG. 5, that is, illustrated in FIG. The time difference display 501 is provided on the outer peripheral side of the second antenna wiring 303. Thereby, the second antenna wiring 303 shown in FIG. 6 is in contact with the vicinity of the center in the vertical direction of the characters.

  In the time difference display 501, symbols “+” and “−” are arranged near the center in the vertical direction of the characters indicated by the conductive member 301 a forming the time difference display 501. Therefore, the position of the second antenna wiring 303 is adjusted so that the contact position between the antenna wiring 111 and the time difference display 501 is near the center in the vertical direction of the character indicated by the conductive member 301a forming the time difference display 501. As a result, the second antenna wiring 303 and the conductive member 301a forming the time difference display 501 can be compared to the case where the contact position between the antenna wiring 111 and the time difference display 501 is the upper and lower ends of the characters made by the time difference display 501. The overlapping length can be increased. As a result, the first antenna wiring 302 and the second antenna wiring 303 are securely short-circuited so that the potentials of the first antenna wiring 302 and the second antenna wiring 303 are surely aligned, and the fineness is difficult to see. Compared to the configuration of only the antenna wiring, the antenna wiring resistance can be lowered, that is, the loss of the propagation current can be suppressed and sufficient antenna characteristics can be obtained.

  As described above, the timepiece 100 according to the second embodiment of the present invention is characterized in that the notation unit 112 according to the present invention is realized by the time difference display 501 indicating the time difference with respect to UTC as the reference time.

  According to the timepiece 100 of the second embodiment of the present invention, the time difference display 501 used for realizing the function of the timepiece 100 is formed using a conductive material to form the notation portion 112, whereby the first antenna. The first antenna wiring 302 and the second antenna wiring 303 can be short-circuited without separately providing a member for short-circuiting the wiring 302 and the second antenna wiring 303. Thereby, it is possible to prevent the visibility of the dial plate 103 and the like from being lowered, and to provide the timepiece 100 which has excellent aesthetics and good reception performance.

<Embodiment 3>
Next, a timepiece 100 according to a third embodiment of the present invention will be described. In the third embodiment, the same parts as those in the first and second embodiments described above are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 7 is an explanatory diagram showing the configuration of the windshield 109 provided in the timepiece 100 according to the third embodiment of the present invention. FIG. 7 shows the windshield 109 according to the third embodiment of the present invention as viewed from the front of the timepiece 100.

  In FIG. 7, the timepiece 100 according to the third embodiment of the present invention has a time number 701 among the indexes 107 provided on the dial 103 of the timepiece 100 according to the first and second embodiments described above. The windshield 109 is provided. A number 701 indicating the time is provided on the back surface 109 a of the windshield 109. The number 701 indicating the time implements the notation unit 112 according to the third embodiment of the present invention.

  The number 701 indicating the time is realized by the conductive member 301a formed using a conductive material, like the city display 301 and the time difference display 501 described above. The conductive member 301a that realizes the number 701 indicating the time is provided on the back surface 109a of the windshield 109 by, for example, printing using various techniques as described above. Alternatively, the conductive member 301a that realizes the number 701 indicating the time is, for example, an emblem formed using a conductive material such as metal, or a sheet formed using a conductive material such as metal. It may be realized by providing a member obtained by cutting the shaped member by attaching it to the back surface 109a of the windshield 109 or the like.

  The conductive member 301 a that realizes the number 701 indicating the time can be formed using any color material according to the design of the timepiece 100 regardless of the color of the dial plate 103 or the dial ring 104. The conductive member 301a that realizes the number 701 indicating the time is preferably formed using a material having a color opposite to that of the dial 103 or the dial ring 104 in order to ensure good visibility.

  In addition, when the color of the dial 103 and the color of the dial ring 104 are different, the conductive member 301 a that realizes the time 701 is opposite to the color of the dial 103 and the dial ring 104. It is preferable to form using a material of the following color. Thereby, the favorable visibility of the number 701 indicating the time can be ensured.

  An antenna wiring 111 is provided on the back surface 109 a of the windshield 109. In the third embodiment, the first antenna wiring 302 that is the outermost antenna wiring 111 and the second antenna wiring 303 that is the inner antenna wiring 111 from the first antenna wiring 302. , Is provided.

  The number 701 indicating the time is larger than the distance between the characters forming the city display 301 and the time difference display 501 described above, and the numbers are separated from each other. For this reason, compared with Embodiment 1 and Embodiment 2 mentioned above, there are few places where the 1st antenna wiring 302 and the 2nd antenna wiring 303 are short-circuited. If there are few places where the first antenna wiring 302 and the second antenna wiring 303 are short-circuited, the potential difference due to the difference in wiring resistance becomes significant and affects the antenna characteristics.

  The timepiece 100 according to the third embodiment includes a mesh wiring 702 provided between the first antenna wiring 302 and the second antenna wiring 303. Mesh wiring 702 is formed of a conductive material such as metal. A plurality of mesh wirings 702 are provided in a mesh shape (mesh shape) between the first antenna wiring 302 and the second antenna wiring 303. The mesh wiring 702 short-circuits the first antenna wiring 302 and the second antenna wiring 303.

  The mesh wiring 702 is formed using a material having the same color as the dial plate 103 and the dial ring 104. Moreover, it is preferable that each thickness of the mesh wiring 702 which comprises a mesh is 30 micrometers or less, for example. As a result, it is difficult to make the mesh wiring 702 difficult to see, and it is possible to prevent the appearance (aesthetics) from deteriorating due to the mesh wiring 702 being viewed.

  The mesh wiring 702 is provided by printing the conductive member 301 a on the back surface 109 a of the windshield 109. In this case, when the timepiece 100 is manufactured, the number 701 indicating the time is printed on the back surface 109 a of the windshield 109 first, and then the antenna wiring 111 and the mesh wiring 702 are printed.

  The antenna wiring 111 and the mesh wiring 702 may be printed in different processes, respectively, and the antenna wiring 111 and the mesh wiring 702 are simultaneously windshielded 109 by using a plate provided with a pattern of the antenna wiring 111 and the mesh wiring 702. The back surface 109a may be printed. Thereby, also when providing the city display 301 and the antenna wiring 111 in the position which overlaps, the visibility of the city display 301 is securable.

  When the interval between characters is large (wide) as in the number 701 indicating the time, the first antenna wiring 302 and the second antenna wiring 303 are connected by the mesh wiring 702 in addition to the conductive member 301a forming the notation 112. By short-circuiting, it is possible to suppress an increase in resistance value in the antenna, ensure good reception performance, and make it difficult to visually recognize the antenna wiring 111.

  In the third embodiment, the timepiece 100 in which the first antenna wiring 302 and the second antenna wiring 303 are short-circuited by the mesh wiring 702 has been described. However, the first antenna wiring 302 and the second antenna wiring 303 are connected to each other. The member to be short-circuited is not limited to the mesh wiring 702. Instead of the mesh wiring 702, the first antenna wiring 302 and the second antenna wiring 303 may be short-circuited by a transparent electrode provided in a mesh pattern.

  As the transparent electrode, for example, a wide gap semiconductor or the like can be used as a material. The wide gap semiconductor does not absorb visible light because the energy gap corresponds to the ultraviolet region, and thus becomes transparent. By short-circuiting the first antenna wiring 302 and the second antenna wiring 303 using a transparent electrode, an increase in the resistance value of the antenna can be suppressed and good reception performance can be ensured.

  Also in this case, the antenna wiring 111, that is, the circulation portion and the mesh portion, are formed using a material having conductivity and a color similar to that of the dial plate 103 and the dial ring 104. Thereby, the visibility of a circulation part and a mesh part can be made low, and favorable receiving performance can be ensured. In this way, by configuring the antenna wiring 111 by the surrounding portion and the mesh portion, it is possible to suppress the deterioration of the decorative property and reliably eliminate the potential difference between the surrounding portions. Thereby, it is possible to provide the timepiece 100 which is excellent in aesthetics and excellent in reception performance.

  In the first to third embodiments described above, the antenna wiring 111 is described as being configured by the first antenna wiring 302 and the second antenna wiring 303. However, the present invention is not limited to this, and there are three or more. The antenna resistance may be further reduced by increasing the number of antenna wirings 111. However, in order to make it difficult to visually recognize the antenna wiring 111, it is preferable that the number is small, and it is more preferable that the number is the outer periphery and the inner periphery as in the above-described configuration.

  Further, although the first antenna wiring 302 and the second antenna wiring 303 have been described as being concentric, the present invention is not necessarily limited to this, and depending on the size, shape, or design of the notation portion 112, it may be partially The shape may be a substantially concentric circular shape deformed into the shape, and can be appropriately selected within a range in which characteristics as an antenna can be obtained.

  In addition, the antenna wiring 111 (first antenna wiring 302, second antenna wiring 303, etc.) and the notation 112 (city display 301, time difference display 501, number 701 indicating time, etc.) are attached to the rear surface 109a of the windshield 109. However, the position where these are provided is not limited to the back surface 109 a of the windshield 109. Any position in the case may be used, and for example, it may be provided on the surface of the dial plate 103 (including the turn ring 104) (the surface on the side facing the windshield 109). In this case, it is preferable to form the antenna wiring 111 on the surface of the dial plate 103 and then form the conductive member 301a which is the notation portion 112. This also makes it possible to provide a timepiece having excellent aesthetics and good reception performance without reducing the visibility of the index 107 provided on the dial 103.

  In the above-described first to third embodiments, as an embodiment according to the present invention, an example is described in which the present invention is applied to a timepiece 100 that includes a hand 106 indicating time and displays time and various information using the hand 106. However, the timepiece that realizes the embodiment according to the present invention is not limited to the one that displays time and various types of information by hands. The timepiece according to the present invention may be realized by a timepiece that displays time and various types of information by liquid crystal display instead of hands, or may be realized by a timepiece having both hands and liquid crystal display.

  As described above, the timepiece according to the present invention is useful for a timepiece having a function of receiving radio waves, and is particularly suitable for a timepiece that requires decorativeness.

100 Clock 101 Case 101a Opening (display window)
DESCRIPTION OF SYMBOLS 103 Dial 106 Pointer 107 Index 109 Windshield 109a Back surface 111 Antenna wiring 112 Notation part 301 City display 301a Conductive member 501 Time difference display 701 Number indicating time 702 Mesh wiring

Claims (9)

A case with a display window;
A notation that represents at least one of characters, symbols, or figures,
An antenna provided at an arbitrary position in the case,
The notation is a conductive member,
The antenna has a plurality of antenna wirings,
The timepiece is in contact with at least two antenna wirings of the plurality of antenna wirings, and short-circuits the at least two antenna wirings . A windshield closing the display window;
Further comprising a dial provided in the case,
The timepiece according to claim 1, wherein the antenna is provided on a side of the dial in the windshield and at a peripheral portion of the windshield.   The timepiece according to claim 2, wherein the antenna is provided on the windshield in the order of the notation and the antenna wiring. A windshield closing the display window;
Further comprising a dial provided in the case,
The timepiece according to claim 1, wherein the antenna is provided on the windshield side of the dial and on a peripheral portion of the dial.   The timepiece according to claim 4, wherein the antenna is provided on the dial in the order of the antenna wiring and the notation.   The timepiece according to claim 1, wherein the notation unit is a city display in which a plurality of city names or area names are arranged in an order based on a time difference.   The timepiece according to claim 1, wherein the notation is a time difference display indicating a time difference with respect to a reference time.   The timepiece according to claim 1, wherein the notation is a time display indicating a time.   The timepiece according to claim 1, further comprising a mesh wiring or a transparent electrode provided between the plurality of antenna wirings and connected to the plurality of antenna wirings.

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