JP2020051953A - Electronic clock - Google Patents

Abstract

To allow a user to recognise a measurement result while avoiding increase in size of a display part and degradation of appearance quality.SOLUTION: A number plate of an electronic clock includes thereon an arc group 150 composed of arcs 201-211 respectively included in a plurality of circles having a center coincident with a center of rotation 220 of an indicator 140 and having radii different from each other. The arcs 201-211 are indicated such that when viewed from the center of rotation 220 of the indicator 140, the number of the arcs present in an indication direction of the indicator 140 is different according to the indication direction of the indicator 140. The rotation of the indicator 140 is controlled so that from among the arcs 201-211, the number of the arcs present in the indication direction of the indicator 140 when viewed from the center of rotation 220 of the indicator 140 corresponds to a physical quantity (for example, battery residual amount) measured in the electronic clock.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electronic timepiece.

  2. Description of the Related Art Conventionally, in an electronic timepiece, a configuration is known in which a measured value of a physical quantity such as a remaining battery level is displayed by a pointer or the like. In addition, in a display device having a speedometer, a pressure gauge, and other scales indicating the quantity, a configuration in which the scales are sequentially arranged to be sequentially longer is known (for example, see Patent Document 1 below). Further, as a power indicator of a secondary battery, there is known an analog electronic timepiece in which a scale of a crescent moon shape is described (for example, see Patent Document 2 below).

JP-A-3-18722 JP-A-2006-142545

  However, in the above-described conventional technology, when the measurement result of the battery remaining amount and the like in the electronic timepiece is displayed to the user by the display unit using the hands, the measurement result is avoided while avoiding the enlargement of the display unit and the deterioration of the appearance quality. There is a problem that it is not possible for the user to easily grasp the information.

  For example, the configuration of Patent Document 1 described above has a problem that a space for displaying the value is required near a scale of a representative value, and the display unit is enlarged. It is also conceivable to omit the notation of the value in the configuration of Patent Document 1 described above. However, in this case, there is a problem that the user cannot easily grasp the measurement result because the user needs to change the direction of the line of sight to grasp the measurement result.

  Further, in the configuration of Patent Document 2 described above, the user grasps the measurement result based on the thickness of the portion indicated by the pointer in the scale of the crescent sickle shape, and thus it is difficult to grasp the measurement result quantitatively. Further, in the configuration of Patent Document 2 described above, a configuration in which a radial dividing line centered on the center of rotation of the pointer is provided on the scale of the crescent sickle shape is also conceivable. However, in this case, there is a problem in that the scale of the crescent sickle shape is divided in the rotating direction of the hands by the radial dividing line, and the appearance quality is deteriorated. In the configuration of Patent Document 2 described above, for example, when the remaining battery level is indicated by the thickness of the portion indicated by the pointer in the scale of the crescent moon sickle, the user uses the scale of the crescent moon sickle to use the battery. There is a problem that it is difficult to grasp.

  An object of the present invention is to provide an electronic timepiece that allows a user to easily grasp a measurement result while avoiding an increase in the size of a display unit and deterioration in appearance quality, in order to solve the above-described problems caused by the conventional technology. And

  In order to solve the above-described problems and achieve the object, an electronic timepiece according to the present invention includes a pointer whose pointing direction changes due to rotation, and a plurality of circles each having a different center from the center of rotation of the pointer and having different radii. A display plate on which a plurality of included arcs are indicated, wherein, among the indicated plurality of arcs, the number of arcs present in the indicated direction of the hands as viewed from the rotation center of the hands is equal to the indicated direction of the hands. A different display plate, a measuring unit for measuring a predetermined physical quantity, and the number of arcs present in the direction indicated by the pointer as viewed from the center of rotation of the pointer among the plurality of arcs was measured by the measuring unit. A control unit that controls the rotation of the hands so that the number becomes a number corresponding to the physical quantity.

  Thereby, for example, the user can easily visually recognize the measured physical quantity by counting the arcs by moving the line of sight in a certain direction indicated by the hands.

  Further, in the electronic timepiece according to the present invention, each of the plurality of arcs is located in the same direction as viewed from the center of rotation of the hands in the plurality of circles, in the same direction around the center of rotation of the hands and Each arc is obtained by rotating at a different rotation angle from each other.

  Further, the electronic timepiece according to the present invention is characterized in that, of the plurality of arcs, the one closer to the rotation center of the pointer is shorter.

  Further, the electronic timepiece according to the present invention is arranged such that the display plate is rotated from the end of each of the plurality of arcs opposite to the end located in the same direction as viewed from the center of rotation of the hands. Each line toward the center is described.

  Further, the electronic timepiece according to the present invention is characterized in that a width of a tip of the pointer in the pointing direction side is smaller than a minimum difference among lengths of the plurality of arcs.

  Further, the electronic timepiece according to the present invention is characterized in that the color of a portion of the hands that is visually recognized by a user is a color different from the colors of the plurality of arcs.

  Further, the electronic timepiece according to the present invention is characterized in that at least one of the plurality of arcs has a different color of an adjacent arc.

  Advantageous Effects of Invention According to one aspect of the present invention, there is an effect that a measurement result can be easily grasped by a user while avoiding an increase in the size of a display unit and deterioration of appearance quality.

FIG. 1 is a diagram illustrating an example of an appearance of an electronic timepiece according to an embodiment. FIG. 2 is a diagram illustrating an example of an arc group of the electronic timepiece according to the embodiment. FIG. 3 is a diagram illustrating an example of a hardware configuration of the electronic timepiece according to the embodiment. FIG. 4 is a diagram illustrating an example of the width of the tip of the pointer according to the embodiment. FIG. 5 is a diagram illustrating an example of the auxiliary scale of the arc group of the dial according to the embodiment. FIG. 6 is a diagram illustrating an example of color coding of each arc of the dial according to the embodiment. FIG. 7 is a diagram illustrating another example of color coding of each arc of the dial according to the embodiment. FIG. 8 is a diagram illustrating an example of control of the hands according to the embodiment. FIG. 9 is a diagram illustrating another example of the hardware configuration of the electronic timepiece according to the embodiment.

  Embodiments of an electronic timepiece according to the present invention will be described below in detail with reference to the drawings.

(Embodiment)
(Appearance of electronic timepiece according to the embodiment)
FIG. 1 is a diagram illustrating an example of an appearance of an electronic timepiece according to an embodiment. As shown in FIG. 1, an electronic timepiece 100 according to the embodiment includes a dial (display plate) 110, an hour hand 121, a minute hand 122, a second hand 123, and a pointer 140 in a body that is an exterior (watch case).

  The hour hand 121, the minute hand 122 and the second hand 123 indicate the time (for example, “0”, “1”, “2”, “3”, “4”, etc.) indicated on the dial 110 and the scale to indicate the current time. Is a guideline for displaying. In the example shown in FIG. 1, the hour hand 121 and the minute hand 122 have the same length as each other, but can be distinguished from each other by different positions and sizes of the colored regions. In addition, each of the hour hand 121, the minute hand 122, and the second hand 123 may be used for displaying information different from the current time.

  The pointer 140 indicates a position obtained by measuring a predetermined physical quantity in the electronic timepiece 100 by indicating any position of the arc group 150 described on the dial 110. The predetermined physical quantity is, for example, the remaining battery power of the electronic timepiece 100, but is not limited to the remaining battery capacity of the electronic timepiece 100, and may be another physical quantity (for example, see the measuring unit 901 in FIG. 9). Here, a case where the predetermined physical quantity is the remaining battery level of electronic timepiece 100 will be described. For example, the arc group 150 indicates the remaining battery level of the electronic timepiece 100, and the pointer 140 indicates the arc group 150 to display a measured value of the battery level of the electronic timepiece 100.

  The color of the part of the hands 140 that is visually recognized by the user is different from the color of the arc group 150. The portion of the hands 140 that is visually recognized by the user is a surface (a surface illustrated in FIG. 1) of each surface of the hands 140 that is opposite to the surface facing the dial 110. Thereby, the visibility of each of the hands 140 and the arc group 150 is improved, and it is easy to grasp the remaining battery level by the hands 140 and the arc group 150. The shape and the like of the arc group 150 will be described later (for example, see FIG. 2).

  In addition, the pointer 140 indicates an operation mode of the electronic timepiece 100 by indicating one of the mode marks 161 to 163 written on the dial 110. For example, the mode marks 161 to 163 correspond to different operation modes of the electronic timepiece 100, and the pointer 140 indicates a mode mark of the mode marks 161 to 163 corresponding to the current operation mode of the electronic timepiece 100. I do.

  In the electronic timepiece 100, a crown 131, a first push button 132, and a second push button 133 are arranged on the side of the body as an operation unit 130 for the user of the electronic timepiece 100 to perform various operations. ing. In the example shown in FIG. 1, the crown 131 is arranged at the 3 o'clock side, the first push button 132 is arranged at the 2 o'clock side, and the second push button 133 is arranged at the 4 o'clock side.

  The second push button 133 is an operation unit for switching the operation mode of the electronic timepiece 100 displayed by the hands 140 and the mode marks 161 to 163. The part of the second push button 133 that is visually recognized by the user of the electronic timepiece 100 has the same system color as the colors of the mode marks 161 to 163. The second push button 133 and the mode marks 161 to 163 are all yellow, for example.

  A windshield made of a transparent material such as glass is attached to the body of the electronic timepiece 100 so as to cover the dial 110. A back cover is attached to the body of the electronic timepiece 100 on the opposite side of the windshield. Hereinafter, the direction in which the windshield is arranged in the electronic timepiece 100 (the direction in front of the paper surface in FIG. 1) is referred to as the front side, and the direction in which the back cover is arranged in the electronic timepiece 100 (the depth direction in the paper surface in FIG. 1) is referred to as the back side. A band 170 is attached to the body of the electronic timepiece 100 so that the user of the electronic timepiece 100 can carry the electronic timepiece 100 by winding it around his / her wrist or the like.

  The electronic timepiece 100 may be a solar cell timepiece powered by light energy such as the sun. For example, a solar cell is arranged on the back side of the dial 110, and power is generated in the solar cell by light incident from the front side. Therefore, the dial 110 is formed of a material that transmits light to some extent. The power generated by the solar battery is stored in a secondary battery (for example, the secondary battery 312 shown in FIG. 3), and the power stored in the secondary battery is used as a power source of the electronic timepiece 100. The secondary battery can be realized by, for example, a lithium ion battery or the like. The pointer 140 and the arc group 150 indicate the remaining amount of the secondary battery, for example.

  The appearance of the electronic timepiece 100 shown in FIG. 1 is an example, and the appearance of the electronic timepiece 100 is not limited to this. For example, the body may be square instead of round, and the presence, number, arrangement, and shape of the crown 131 and the like may be arbitrarily changed. Further, the present invention is not limited to the configuration including the three hands of the hour hand 121, the minute hand 122, and the second hand 123 as the hands indicating the current time. Alternatively, a guideline for performing various displays such as a day of the week, presence or absence of daylight saving time, a radio wave reception state, a date display unit, and the like may be added.

  Further, the configuration in which the electronic timepiece 100 is a wristwatch has been described, but the electronic timepiece 100 is not limited to such a configuration. For example, the electronic timepiece 100 may be a timepiece such as a pocket watch, a table clock, or a wall clock. Also, the configuration in which the electronic timepiece 100 is an analog timepiece that displays the current time by hands has been described, but is not limited to such a configuration.

  For example, the electronic timepiece 100 may be a digital timepiece that displays the current time by a numerical value, or an audio timepiece that notifies the time by voice. In addition, the electronic timepiece 100 may be a timepiece (for example, a smartwatch) that notifies the current time by displaying an image indicating a time display unit of an analog timepiece or a digital timepiece on a display.

  However, also in these cases, the electronic timepiece 100 includes the hands 140 and the arc group 150. When the electronic timepiece 100 includes a display, the hands 140 and the arc group 150 may be virtual hands and arc groups realized by an image displayed by the display.

(Circular arc group of electronic timepiece according to embodiment)
FIG. 2 is a diagram illustrating an example of an arc group of the electronic timepiece according to the embodiment. The arc group 150 illustrated in FIG. 1 includes, for example, arcs 201 to 211 as illustrated in FIG. Here, the rotation center 220 shown in FIG. 2 is the rotation center (rotation axis) of the pointer 140. The arcs 201 to 211 are a plurality of circles centered on the rotation center 220 of the pointer 140, each of which is included in a plurality of circles having different radii at regular intervals (predetermined unit Δr).

  For example, the arc 201 is an arc having the largest radius among the arcs 201 to 211. The radius of the arc is the radius of the circle containing the arc. The arc 202 is an arc whose radius is shorter than the arc 201 by a predetermined unit Δr. The arc 203 is an arc whose radius is shorter than the arc 202 by a predetermined unit Δr. Similarly, the radii of the arcs 204 to 211 also differ by a predetermined unit Δr.

  The arcs 201 to 211 are located in the same direction when viewed from the rotation center 220 and have different distances from the rotation center 220. The points are defined in the same direction (counterclockwise in FIG. Each arc obtained by rotating at a different rotation angle.

  Therefore, the lengths of the arcs 201 to 211 are different from each other. For example, the arc 201 is the first longest arc, and the arcs 202 to 211 are the second to eleventh longest arcs, respectively. In the example shown in FIG. 2, the lengths of the arcs 201 to 211 are the arc 211, the arc 210, the arc 209, the arc 208, the arc 207, the arc 206, the arc 205, the arc 204, the arc 203, the arc 202, and the arc 201. It becomes longer in order (exponential series). The series relationship between the lengths of the arcs 201 to 211 will be described later (for example, see FIG. 8).

  One end (hereinafter, referred to as a starting point) of each of the arcs 201 to 211 is located in the same direction (hereinafter, referred to as a reference direction D0) when viewed from the rotation center 220. The other ends (hereinafter, referred to as end points) of the arcs 201 to 211 are located in different directions from the rotation center 220.

  When the measured value is displayed by the pointer 140 and the arc group 150, the rotation of the pointer 140 is controlled, for example, in a range where at least one of the arcs 201 to 211 exists in the direction indicated by the pointer 140. In the example shown in FIG. 2, at least one of the arcs 201 to 211 exists in a range of 180 degrees counterclockwise from the reference direction D0 when viewed from the rotation center 220. Therefore, the rotation of the pointer 140 is controlled in a range of 180 degrees (semicircular range) counterclockwise from the reference direction D0.

  The case where the measured value of the remaining battery level of the electronic timepiece 100 is displayed by the hands 140 will be described. In this case, the rotation of the pointer 140 is adjusted so that the number of arcs present in the direction indicated by the pointer 140 when viewed from the rotation center 220 among the arcs 201 to 211 is a number corresponding to the measured value of the remaining battery level of the electronic timepiece 100. Is controlled. For example, the rotation of the pointer 140 is controlled such that the greater the remaining battery power of the electronic timepiece 100, the greater the number of arcs present in the direction indicated by the pointer 140 when viewed from the rotation center 220 among the arcs 201 to 211. The arc present in the direction indicated by the pointer 140 is an arc crossing the direction indicated by the pointer 140.

  In the example shown in FIG. 2, the rotation of the hands 140 is controlled such that the angle between the reference direction D0 and the direction indicated by the hands 140 is an angle corresponding to the measured value of the battery level of the electronic timepiece 100. For example, when the remaining battery level of electronic timepiece 100 is close to the maximum value (for example, 100%), the angle between reference direction D0 and the pointing direction of hands 140 becomes minimum (for example, about 0 to 10 degrees).

  Further, as the remaining battery level of electronic timepiece 100 decreases, pointer 140 rotates counterclockwise so that the angle between reference direction D0 and the pointing direction of pointer 140 increases. When the remaining battery level of electronic timepiece 100 is close to the minimum value (for example, 0%), the angle between reference direction D0 and the pointing direction of hands 140 becomes the maximum (for example, about 170 to 180 degrees).

  With such control, as the remaining battery level of the electronic timepiece 100 decreases, the number of arcs present in the direction indicated by the pointer 140 among the arcs 201 to 211 decreases. For example, when the remaining battery level of the electronic timepiece 100 is close to the maximum value, the pointing direction of the pointer 140 is substantially downward in FIG. 2, and eleven arcs (arcs 201 to 211) exist in the pointing direction of the pointer 140. I do.

  Then, when the remaining battery level of the electronic timepiece 100 decreases, the pointing direction of the pointer 140 becomes the pointing direction as shown in FIG. 2, for example. In this case, the pointing direction of the pointer 140 has three arcs (arcs 201 to 203). ) Exists. When the remaining battery level of the electronic timepiece 100 is close to the minimum value, the pointing direction of the pointer 140 is substantially upward in FIG. 2, and the pointing direction of the pointer 140 has one arc (arc 201). Therefore, the user of the electronic timepiece 100 can grasp the remaining battery level of the electronic timepiece 100 based on the number of arcs present in the direction indicated by the pointer 140 among the arcs 201 to 211.

  By using the group of arcs 150 shown in FIG. 2, the size of the display unit including the hands 140 and the group of arcs 150 and the deterioration of the appearance quality can be avoided, and the remaining battery level of the electronic timepiece 100 can be reduced. The user can easily understand.

  For example, in the configuration of Patent Literature 1 described above, radial scales are arranged in the circumferential direction on the outer peripheral portion of the circular display unit, and the value is set near a typical value scale among the scales. It is written. For this reason, there is a problem in that a space for displaying a representative value is required, and the display unit is enlarged.

  On the other hand, according to the electronic timepiece 100, even without such a value, the user can grasp the remaining battery level by counting the arcs in the direction indicated by the hands 140 (on the extension of the hands 140). be able to. For this reason, the user can grasp the remaining battery level without increasing the size of the display unit including the hands 140 and the arc group 150 in order to provide a space for displaying a representative value. In addition, it is possible to avoid deterioration of the appearance quality due to the above-described value notation on the dial 110. Note that the number of arcs does not necessarily need to be accurately counted by the user. That is, the user can roughly grasp the remaining battery level of the electronic timepiece 100 if he can roughly grasp the number of arcs.

  Further, in the configuration of Patent Literature 1, a method is conceivable in which the user counts the number of the scale from the end scale to the scale in the direction indicated by the pointer without displaying the above value. However, in this case, the user first looks at the pointer, specifies the scale indicated by the pointer by moving the line of sight in the direction indicated by the pointer, and then specifies the scale while moving the line of sight in the circumferential direction. It will count the number of ticks from the edge ticks. Therefore, the direction of movement of the line of sight needs to be changed, and the value displayed by the pointer cannot be easily grasped.

  On the other hand, according to the electronic timepiece 100, the user first looks at the pointer 140, and moves the line of sight toward the pointing direction of the pointer 140, and counts the number of arcs in the pointing direction of the pointer 140. The remaining amount can be grasped. Therefore, the user can count the arcs by moving the line of sight in a certain direction, so that the user can easily grasp the remaining battery level.

  Further, in the configuration of Patent Literature 2, the measured value is displayed using the pointer and the scale of the crescent moon sickle shape. The crescent sickle shape is, for example, a shape obtained by cutting a crescent shape composed of two arcs in the radial direction of the arc. In such a configuration, the user grasps the measurement result based on the thickness of the portion indicated by the pointer on the crescent-shaped sickle scale, so it is difficult to quantitatively grasp the measurement result. Further, it is conceivable that a crescent-shaped sickle-shaped scale is provided with a meridional dividing line centered on the center of rotation of the hands so that the displayed value can be easily grasped quantitatively. However, when such a meridional dividing line is provided, the scale of the crescent moon sickle is divided in the rotating direction of the hands, and the appearance quality is deteriorated.

  On the other hand, in the electronic timepiece 100, a crescent sickle-shaped scale (a group of circular arcs 150) can be realized by a combination of circular arcs 201 to 211 around the rotation center 220 of the pointer 140. Accordingly, since there is no radial line in the scale of the crescent sickle shape composed of the arc group 150, the scale of the crescent sickle shape is not divided in the rotating direction of the pointer 140, so that deterioration of the appearance quality can be avoided. Further, since the scale of the crescent moon shape is constituted only by the circular arcs 201 to 211 in the rotating direction of the pointer 140, the appearance quality can be improved.

  Further, when the scale of the crescent sickle shape is performed by coloring the dial 110, by implementing the scale of the crescent sickle shape by combining the arcs 201 to 211, for example, the sickle shape is colored compared to the case where the crescent sickle shape is solid-painted. Costs such as fees can be suppressed.

  In addition, the user may want to know the battery usage (the difference between the battery capacity and the battery remaining) instead of the battery remaining. In this case, the user specifies the arc closest to the rotation center 220 from the arcs existing in the direction indicated by the pointer 140 among the arcs 201 to 211, and determines the battery usage by observing the length of the specified arc. It can be easily grasped. For example, in the example illustrated in FIG. 2, the arc closest to the rotation center 220 among the arcs 201 to 203 existing in the direction indicated by the pointer 140 is the arc 203, and the battery usage can be reduced by observing the length of the arc 203. It can be easily grasped.

  For example, in the configuration of Patent Document 1, each scale is described in a space of a circle centered on the center of rotation of the pointer, and the length of each scale is at most the radius of the circle. Specifically, assuming that the radius of the semicircular space (radius of the circular arc 201) in which the group of arcs 150 shown in FIG. 2 is provided is r, the radius of the semicircular space is assumed to be the same as the configuration of the cited document 1. When a scale is provided in the direction, the length of the scale is at most r.

  For this reason, the difference in length between each scale becomes small, and it is difficult for the user to grasp how much the length of the scale specified by the pointer differs from the length of the scale other than the specified scale. is there. Therefore, it is difficult for the user to grasp the value displayed by the pointer from the length of the scale specified by the pointer.

  On the other hand, in the electronic timepiece 100, arcs 201 to 211 are described in a space of a circle centered on the rotation center 220 of the hands 140, and the length of the longest arc 201 is 2 × π × r / 2. = Π × r. Therefore, the maximum value of the length of the arcs 201 to 211 can be increased by π (≒ 3.14) times as compared with the case where the radial scale is provided as described above. Accordingly, as the lengths of the arcs 201 to 211, each length within a wide range from a length close to 0 to π × r can be used, so that a difference in length between the arcs 201 to 211 is increased. It becomes possible to do.

  As a result, the user can easily grasp how different the length of the specified arc is from the length of the arc other than the specified arc. For example, the user can grasp the ratio of the current battery usage to the maximum battery usage by comparing the length of the specified arc with the length of the arc 201 indicating the maximum battery usage. . Therefore, the user can easily grasp the battery usage of the electronic timepiece 100 by the arc group 150 having a small space.

  That is, conventionally, each line having a different length is described in a space having a shape of a circle (including a semicircle) around the center of rotation of the pointer, and the measured value is determined by the length of the line specified by the pointer among the lines. Is displayed. In such a configuration, as in the electronic timepiece 100, by making each line an arc (arcs 201 to 211) centered on the center of rotation of the hands, it is possible to increase the difference between the lengths of the lines. This makes it easy to grasp the measured values.

  In the arc group 150 shown in FIG. 2, the arc closer to the rotation center 220 among the arcs 201 to 211 is shorter. Thereby, the outermost arc 201 among the arcs 201 to 211 becomes the longest. For this reason, the outer edge of the circular display area centered on the rotation center 220 is clarified by the arc 201, and the appearance quality of the electronic timepiece 100 can be improved.

  Further, for example, in the configuration of Patent Document 2, the measurement value is displayed using the pointer and the scale of the crescent sickle shape as described above. Therefore, for example, when the remaining battery level is indicated by the thickness of the portion indicated by the pointer in the scale of the crescent moon sickle, it is difficult for the user to grasp the battery usage using the scale of the crescent moon sickle. There is a problem.

  On the other hand, in the electronic timepiece 100, a crescent-shaped sickle-shaped scale is realized by the arc group 150 including the arcs 201 to 211, so that the remaining battery level is indicated by the number of arcs in the direction indicated by the pointer 140. The battery usage can be indicated by the length of the arc characterized by the pointer 140. That is, the display of the battery remaining amount and the display of the battery usage amount can be compatible with one set of the pointer 140 and the arc group 150.

  The group of circular arcs 150 shown in FIG. 2 is an example. The group of circular arcs 150 may be various as long as the number of circular arcs present in the pointing direction of the pointer 140 differs from the rotation center 220 in accordance with the pointing direction of the pointer 140. Is possible. For example, the configuration in which the arc group 150 includes 11 arcs (arcs 201 to 211) has been described, but the arc group 150 may include 2 to 10 arcs or 12 or more arcs.

  In addition, a configuration in which the arc group 150 is described in a range (a semicircle range) from the 12 o'clock direction to the 6 o'clock direction of the electronic timepiece 100, that is, the longest arc 201 in the arc group 150 is from the 0 o'clock direction to the 6 o'clock direction. Although a configuration having an arc up to has been described, the present invention is not limited to such a configuration. For example, the arc group 150 may be described in a range (semicircle range) from the 6 o'clock direction to the 12 o'clock direction. In this case, the longest arc 201 in the arc group 150 is an arc from the 6 o'clock direction to the 12 o'clock direction. In addition, the arc group 150 may be described in a range from the 3 o'clock direction to the 6 o'clock direction (a sector with a central angle of 90 degrees), or in a range from the 0 o'clock direction to the 9 o'clock direction (the central angle is 270). (Sectoral range of degrees).

  In addition, the configuration has been described in which the shorter the arc closer to the rotation center 220 among the arcs 201 to 211, the invention is not limited to such a configuration. For example, the arc closer to the rotation center 220 among the arcs 201 to 211 may be longer. Further, all the lengths of the circular arcs 201 to 211 may be the same.

  In addition, the configuration in which the lengths of the arcs 201 to 211 are exponentially longer in the order in which the arcs are arranged has been described, but the present invention is not limited to such a configuration. For example, a configuration may be adopted in which the lengths of the arcs 201 to 211 become longer at equal intervals in the arrangement order.

  Further, the configuration in which the arcs 201 to 211 are arranged at regular intervals (predetermined unit Δr) has been described. However, the configuration is not limited to such a configuration, and the arcs 201 to 211 may be arranged at irregular intervals. .

  Also, a configuration has been described in which one end of each of the arcs 201 to 211 is located in the same direction as viewed from the rotation center 220, and the other end of each of the arcs 201 to 211 is located in a different direction as viewed from the rotation center 220. The configuration is not limited to this. For example, one end of each of the arcs 201 to 211 may be located in a different direction as viewed from the rotation center 220, and the other end of each of the arcs 201 to 211 may be located in a different direction as viewed from the rotation center 220. Note that one end of each of the arcs 201 to 211 is the above-described starting point, which is a point corresponding to a state where the remaining battery power is large. The other end of each of the arcs 201 to 211 is the above-described starting point, which is a point corresponding to a state where the remaining battery level is low.

(Hardware configuration of electronic timepiece according to embodiment)
FIG. 3 is a diagram illustrating an example of a hardware configuration of the electronic timepiece according to the embodiment. In FIG. 3, the same parts as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. As illustrated in FIG. 3, the electronic timepiece 100 according to the embodiment is realized by an operation unit 130, a solar cell 311, a secondary battery 312, a control circuit 320, a driving mechanism 330, and a display unit 340. Is done.

  Solar cell 311 is arranged, for example, on the back side of dial 110 shown in FIG. Then, the solar cell 311 generates electric power by external light such as sunlight irradiating the electronic timepiece 100, and supplies the generated electric power to the secondary battery 312. The secondary battery 312 stores the electric power generated by the solar cell 311. Then, the secondary battery 312 supplies the stored power to each circuit of the electronic timepiece 100 such as the control circuit 320. The secondary battery 312 can be realized by, for example, a lithium ion battery or the like.

  The control circuit 320 includes a ROM 321, a RAM 322, an RTC 323, a battery remaining amount measurement unit 324, a calculation unit (control unit) 325, and a motor drive circuit 326. ROM is an abbreviation for Read Only Memory. RAM is an abbreviation for Random Access Memory. RTC is an abbreviation for Real Time Clock. Control circuit 320 can be realized by an information processing device such as a microcomputer, for example.

  The ROM 321 is an auxiliary memory that stores various programs and data for operating the electronic timepiece 100. The ROM 321 is a nonvolatile memory such as a magnetic disk and a flash memory. The RAM 322 is a main memory used as a work area of the arithmetic unit 325 and in which data to be processed by the arithmetic unit 325 is written.

  The RTC 323 supplies a clock signal used by the arithmetic unit 325 for timing. For example, the RTC 323 oscillates a crystal oscillator included in the electronic timepiece 100 to generate a clock signal, and supplies the generated clock signal to the arithmetic unit 325 as a reference signal.

  The remaining battery level measurement unit 324 measures the remaining battery level of the secondary battery 312 as the above-mentioned predetermined physical quantity, and outputs the measured value of the remaining battery level to the calculation unit 325. The measurement of the remaining battery level by the remaining battery level measuring unit 324 can be performed, for example, by detecting the output voltage of the secondary battery 312. However, the method of measuring the remaining battery level is not limited to this, and various measurement methods can be used.

  The arithmetic unit 325 controls the entire electronic timepiece 100. For example, the arithmetic unit 325 performs various controls by loading a program stored in the ROM 321 into the RAM 322 and executing the program. For example, the arithmetic unit 325 measures the current time based on the clock signal supplied from the RTC 323, and controls the motor drive circuit 326 to display the measured current time on the display unit 340.

  The arithmetic unit 325 controls the motor drive circuit 326 so that the measured value of the remaining battery level output from the remaining battery level measuring unit 324 is displayed on the display unit 340. For example, the calculation unit 325 controls the motor drive circuit 326 such that the pointing direction of the pointer 140 included in the display unit 340 is the pointing direction corresponding to the measured value of the battery remaining amount, as described later. An example of control of the display of the measured value of the remaining battery level by the arithmetic unit 325 will be described later (for example, see FIG. 8).

  The motor drive circuit 326 outputs a drive signal for driving a motor included in a drive mechanism 330 described below in accordance with control from the arithmetic unit 325. Thus, for example, the display time determined by the control circuit 320 and the remaining battery level of the secondary battery 312 measured by the remaining battery level measuring section 324 are displayed on the display section 340.

  The driving mechanism 330 includes a stepping motor or a wheel train that operates in accordance with a driving signal output from the motor driving circuit 326 described above. To rotate.

  Display unit 340 includes, for example, dial 110, hour hand 121, minute hand 122, second hand 123, and hands 140 shown in FIG. Each information is displayed by rotating each pointer included in the display unit 340 on the dial 110.

  The operation unit 130 receives an operation by the user and outputs the operation content to the control circuit 320. The control circuit 320 executes various processes according to the contents of the operation input received by the operation unit 130. The operation unit 130 includes, for example, the crown 131, the first push button 132, and the second push button 133 shown in FIG.

(Width of the tip of the pointer according to the embodiment)
FIG. 4 is a diagram illustrating an example of the width of the tip of the pointer according to the embodiment. 4, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. The ranges W1 to W11 shown in FIG. 4 are ranges defined by the arcs 201 to 211 being longer in the arrangement order.

  For example, the range W1 is a fan-shaped range from the end point of the arc 201 to the end point of the arc 202 when viewed from the rotation center 220. The range W2 is a fan-shaped range from the end point of the arc 202 to the end point of the arc 203 when viewed from the rotation center 220. The same applies to the ranges W3 to W10. For example, the range W10 is a fan-shaped range from the end point of the arc 210 to the end point of the arc 211 when viewed from the rotation center 220. The range W11 is a fan-shaped range from the end point to the start point of the arc 211 as viewed from the rotation center 220.

  As shown in FIG. 4, (difference in length of arcs 201 and 202)> (difference in length of arcs 202 and 203)> (difference in length of arcs 203 and 204)> (length of arcs 204 and 205) (Difference in length of arcs 205 and 206)> (difference in length of arcs 206 and 207)> (difference in length of arcs 207 and 208)> (difference in length of arcs 208 and 209) Difference)> (difference in length between arcs 209 and 210)> (difference in length between arcs 210 and 211). Further, in the example shown in FIG. 4, (difference between the lengths of the arcs 210 and 211)> (length of the arc 211). Therefore, (width of range W1)> (width of range W2)> (width of range W3)> (width of range W4)> (width of range W5)> (width of range W6)> (Width of range W7)> (width of range W8)> (width of range W9)> (width of range W10)> (width of range W11).

  W0 is the width of the tip of the pointer 140 on the side in the pointing direction of the pointer 140. The width W0 of the tip of the pointer 140 is smaller than the difference between the lengths of the arcs 210 and 211, which is the minimum value of the difference between the lengths of the arcs 201 to 211. Thus, the range indicated by the tip of the pointer 140 can be prevented from straddling three or more of the ranges W1 to W11, and the visibility by the user can be improved.

  For example, as in the example shown in FIG. 4, when the pointer 140 points near the center of the range W3, the width W0 of the tip of the pointer 140 is smaller than the difference between the lengths of the arcs 203 and 204. It is clear that the pointer 140 indicates the range W3. Therefore, the user can easily grasp that there are three arcs present in the direction indicated by the pointer 140 among the arcs 201 to 211. Further, for example, when the pointer 140 indicates the vicinity of the boundary between the ranges W2 and W3, the pointing range of the tip of the pointer 140 may extend over two ranges, but the pointing range of the tip of the pointer 140 may be three or more. Straddling over the range can be avoided.

(Auxiliary scale of arc group of dial according to the embodiment)
FIG. 5 is a diagram illustrating an example of the auxiliary scale of the arc group of the dial according to the embodiment. 5, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. For example, as shown in FIG. 5, auxiliary scales 501 to 511 may be written on dial 110 in addition to arc group 150 (arcs 201 to 211).

  The auxiliary scale 501 is a line segment from the end point of the arc 201 toward the rotation center 220. Similarly, the auxiliary scales 502 to 511 are line segments from the end points of the circular arcs 202 to 211 to the rotation center 220, respectively. In other words, the auxiliary graduations 501 to 511, which are lines extending from the respective ends of the arc group 150 opposite to the respective ends located in the same direction as viewed from the rotation center 220 of the hands 140 toward the center of rotation of the hands 140, are written. ing. The auxiliary scales 502 to 511 allow the user to easily grasp the boundaries of the ranges W1 to W11 shown in FIG. 4, for example, so that the user can easily count the arcs in the direction indicated by the hands 140.

  In the example illustrated in FIG. 5, each end of each of the auxiliary scales 501 to 511 that is closer to the rotation center 220 is located on the same circle around the rotation center 220. Therefore, the auxiliary scale 501 is the first longest line segment, and the auxiliary scales 502 to 511 are the second to eleventh longest line segments, respectively.

  Thereby, for example, the user can easily grasp the range indicated by the pointer 140 among the ranges W1 to W11 shown in FIG. For example, when indicating the range W1 shown in FIG. 4 with the pointer 140, the distance between the tip of the pointer 140 and the nearest arc (arc 201) is relatively long. However, since the auxiliary scales 501 and 502 are relatively long, the user can easily understand that the pointer 140 indicates the range W1 between the auxiliary scales 501 and 502. For this reason, the user can easily understand that there is only one arc (arc 201) located in the direction indicated by the pointer 140.

  Each length of the auxiliary scales 501 to 511 is such that, for example, even when the pointer 140 indicates any of the ranges W1 to W11 shown in FIG. 4, the tip of the pointer 140 is sandwiched between any of the auxiliary scales 501 to 511. It is preferable to set Thus, the user can easily grasp which of the ranges W1 to W11 the pointer 140 indicates.

(Coloring of each arc of the dial according to the embodiment)
FIG. 6 is a diagram illustrating an example of color coding of each arc of the dial according to the embodiment. 6, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 6, the patterns attached to the arcs 201 to 211 indicate the colors of the arcs 201 to 211. In the example shown in FIG. 6, the arcs 201, 203, 205, 207, 209, 211 are the first color, and the arcs 202, 204, 206, 208, 210 are the second colors different from the first color. .

  The arcs 201 to 211 can be colored by, for example, coloring using paint or the like. As shown in FIG. 6, the adjacent arcs among the arcs 201 to 211 have different colors from each other, so that the user can easily determine the number of arcs existing in the direction indicated by the pointer 140 among the arcs 201 to 211. Can be grasped. Further, for example, when the user wants to grasp the battery usage as described above, the user specifies the arc closest to the rotation center 220 from the arcs existing in the direction indicated by the pointer 140 among the arcs 201 to 211 and then specifies the arc. It becomes easy to grasp the length of the arc. For this reason, the battery usage can be easily grasped.

  FIG. 7 is a diagram illustrating another example of color coding of each arc of the dial according to the embodiment. 7, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 7, the patterns attached to the arcs 201 to 211 indicate the colors of the arcs 201 to 211. In the example shown in FIG. 7, the arcs 201 and 202 are the first color, and the arcs 203 to 205 are the second colors different from the first color. The arcs 206 to 208 are a third color different from the first and second colors, and the arcs 209 to 211 are a fourth color different from the first to third colors.

  As illustrated in FIG. 7, the colors of the arcs 201 to 211 may be different for each of two or more predetermined arcs (three in the example illustrated in FIG. 7) in the order close to the rotation center 220. Alternatively, the colors of the circular arcs 201 to 211 may be different for every two or more predetermined number of circular arcs when viewed from a position farther from the rotation center 220. Thus, the user can easily grasp the number of arcs present in the direction indicated by the pointer 140 among the arcs 201 to 211. Further, by using the same color for each predetermined number, the number of colors used for the dial 110 can be suppressed.

  In addition to the examples shown in FIGS. 6 and 7, for example, only one of the arcs 201 to 211 may have a different color from the other arcs of the arcs 201 to 211. That is, at least one of the plurality of arcs may have a different color of the adjacent arc. Further, the components shown in FIGS. 5 to 7 can be combined. For example, in the configuration in which the auxiliary graduations 501 to 511 are provided as shown in FIG. 5, a configuration may be employed in which the above-described arcs 201 to 211 are further color-coded.

(Control of guidelines according to the embodiment)
FIG. 8 is a diagram illustrating an example of control of the hands according to the embodiment. 8, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. As described above, the arcs 201 to 211 rotate each point located in the same direction as viewed from the rotation center 220 and having a different distance from the rotation center 220 in the same direction and different rotation angles about the rotation center 220. These arcs are obtained by performing the above operations.

  The rotation angles of the points for obtaining the arcs 201 to 211 are, for example, equally spaced. This interval is defined as Δθ degrees (= 180/11 degrees). For example, the arc 211 is an arc obtained by rotating a point located in the reference direction D0 from the rotation center 220 counterclockwise around the rotation center 220 by Δθ degrees.

  The arc 210 is an arc obtained by rotating a point located in the reference direction D0 as viewed from the rotation center 220 counterclockwise around the rotation center 220 by Δθ × 2 degrees. The same applies to the arcs 201 to 209. For example, the arc 201 is obtained by rotating a point located in the reference direction D0 as viewed from the rotation center 220 counterclockwise around the rotation center 220 by Δθ × 11 degrees. It is a circular arc.

  As a result, the length of the arcs 201 to 211 is exponentially longer in the order of the arc 211, the arc 210, the arc 209, the arc 208, the arc 207, the arc 206, the arc 205, the arc 204, the arc 203, the arc 202, and the arc 201. Has become. For example, if the radius of a circle including the arc 211 is r1, the length of the arc 211 is 2 × π × r1 × (Δθ / 360). If the radius of the circle including the arc 210 is r2 (= r1 + Δr), the length of the arc 210 is 2 × π × r2 × (Δθ × 2/360). The same applies to the length of the arcs 203 to 211. For example, if the radius of the circle including the arc 201 is r11 (= r1 + Δr × 10), the length of the arc 201 is 2 × π × r11 × (Δθ × 11 / 360) = π × r11.

  The angle between the pointing direction of the pointer 140 and the reference direction D0 is inversely proportional to the number of arcs existing in the pointing direction of the pointer 140 among the arcs 201 to 211. Therefore, the control of the rotation of the pointer 140 with respect to the change in the remaining battery level is simplified. For example, the calculation unit 325 illustrated in FIG. 3 determines that the angle between the pointing direction of the pointer 140 and the reference direction D0 is inversely proportional to the measurement value of the battery remaining amount output from the battery remaining amount measurement unit 324 (or the battery usage). The rotation of the pointer 140 may be controlled so as to be proportional to the amount.

  In addition, the calculation unit 325 may, for example, digitize the measured value of the remaining battery level into 11 levels. For example, the arithmetic unit 325 calculates the measured value of the remaining battery power by 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100% by fraction processing. Convert to one.

  Then, if the converted value is 0%, the calculation unit 325 controls the rotation of the pointer 140 so as to indicate the center of the range W1 shown in FIG. Similarly, if the converted values are 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%, the calculated values are shown in FIG. The rotation of the pointer 140 is controlled so as to indicate the center of the range W2 to W11. Thus, the user can easily grasp which of the ranges W1 to W11 the pointer 140 indicates.

  As described above, the electronic timepiece 100 according to the embodiment has the dial 110 on which the arcs 201 to 211 included in a plurality of circles whose centers coincide with the rotation center 220 of the hands 140 and whose radii are different from each other are described. The arcs 201 to 211 are described such that the number of arcs present in the direction indicated by the pointer 140 when viewed from the rotation center 220 of the pointer 140 differs depending on the direction indicated by the pointer 140.

  In the electronic timepiece 100, the number of arcs present in the direction indicated by the pointer 140 when viewed from the rotation center 220 of the pointer 140 among the arcs 201 to 211 depends on the remaining battery level measured by the remaining battery level measuring unit 324. The rotation of the pointer 140 is controlled so as to be a number. This allows the user to easily grasp the measurement result while avoiding an increase in the size of the display unit for the remaining battery level and deterioration of the appearance quality.

  For example, as described above, the user can easily grasp the remaining battery level by counting the arcs by moving the line of sight in a certain direction. When the user wants to know the battery usage, the user specifies the arc closest to the rotation center 220 from the arcs existing in the direction indicated by the pointer 140 among the arcs 201 to 211 and determines the length of the specified arc. The user can easily grasp the amount of battery usage by looking.

  Further, even if the space of the dial 110 is limited, the arcs 201 to 211 having a large difference in length can be described in a small space, so that the user can easily grasp the battery usage of the electronic timepiece 100. In addition, a crescent-shaped sickle-shaped scale (a group of arcs 150) that allows a user to easily grasp the battery usage of the electronic timepiece 100 while avoiding deterioration in appearance quality can be realized. In addition, the display of the battery remaining amount and the display of the battery usage amount can be compatible with one set of the pointer 140 and the arc group 150.

(Another Example of Hardware Configuration of Electronic Timepiece According to Embodiment)
FIG. 9 is a diagram illustrating another example of the hardware configuration of the electronic timepiece according to the embodiment. In FIG. 9, the same portions as those shown in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted. The predetermined physical quantity to be measured and displayed by the electronic timepiece 100 is, for example, the battery remaining amount of the electronic timepiece 100 as described above, but is not limited to the battery remaining amount of the electronic timepiece 100. For example, as shown in FIG. 9, the electronic timepiece 100 may include a measuring unit 901 in place of the battery remaining amount measuring unit 324 shown in FIG. Alternatively, the electronic timepiece 100 may include the measuring unit 901 together with the battery remaining amount measuring unit 324 illustrated in FIG.

  The measurement unit 901 measures an object different from the remaining battery level of the electronic timepiece 100 and outputs a measurement value obtained by the measurement to the calculation unit 325. For example, the measurement unit 901 measures physical quantities related to the environment around the electronic timepiece 100, such as temperature, air pressure, humidity, and illuminance. Alternatively, for example, when electronic timepiece 100 has a pedometer function, measurement unit 901 may measure the number of steps (the number of predetermined vibrations) of the user.

  Alternatively, for example, when electronic timepiece 100 has a function of receiving satellite radio waves, standard radio waves, and wireless signals of wireless communication, measurement unit 901 may measure the reception strength of these wireless signals. The measuring unit 901 may measure the amount of power generated by the solar cell 311. However, the target of measurement by the measuring unit 901 is not limited to these, and various physical quantities that can be measured by the electronic timepiece 100 can be used.

  The calculation unit 325 controls the motor drive circuit 326 so that the measurement value output from the measurement unit 901 is displayed on the display unit 340. As described above, the physical quantities to be measured and displayed by the electronic timepiece 100 can be various physical quantities, not limited to the remaining battery power. According to the electronic timepiece 100, the user can easily understand the measurement result of the physical quantity other than the remaining battery level while avoiding the enlargement of the display unit and the deterioration of the appearance quality.

  As described above, the measurement unit that measures the predetermined physical quantity to be displayed by the electronic timepiece 100 may be the battery remaining amount measurement unit 324 illustrated in FIG. 3 or the measurement unit 901 illustrated in FIG. You may. That is, the predetermined physical quantity to be measured and displayed by the electronic timepiece 100 may be the battery remaining amount measured by the battery remaining amount measuring unit 324 shown in FIG. 3 or the measuring unit 901 shown in FIG. May be a physical quantity other than the remaining battery capacity measured by the above.

  Further, the measuring unit that measures the predetermined physical quantity to be displayed by the electronic timepiece 100 may include both the battery remaining amount measuring unit 324 and the measuring unit 901. In this case, for example, by providing a plurality of combinations of the hands 140 and the arc group 150 on the dial 110, the electronic timepiece 100 displays the measured value of the battery remaining amount measuring unit 324 and the measured value of the measuring unit 901 respectively. To That is, the predetermined physical quantity to be measured and displayed by the electronic timepiece 100 is the battery remaining amount measured by the battery remaining amount measuring unit 324 shown in FIG. 3 and the battery remaining amount measured by the measuring unit 901 shown in FIG. Both physical quantities other than the remaining amount may be included.

  In addition, the measurement unit that measures a predetermined physical quantity to be displayed by the electronic timepiece 100 may include a plurality of measurement units 901 that measure different physical quantities (for example, temperature and reception intensity) other than the remaining battery power. In this case, for example, by providing a plurality of combinations of the hands 140 and the arc group 150 on the dial 110, the electronic timepiece 100 displays each measured value by the plurality of measuring units 901. That is, the predetermined physical quantity to be measured and displayed by the electronic timepiece 100 may include a plurality of physical quantities other than the remaining battery power measured by the measuring unit 901 shown in FIG.

  As described above, according to the electronic timepiece according to the present invention, it is possible to allow the user to easily grasp the measurement result while avoiding an increase in the size of the display unit of the physical quantity such as the remaining battery level and deterioration of the appearance quality.

  As described above, the electronic timepiece according to the present invention is useful for a timepiece that measures and displays various physical quantities, and is particularly suitable for an electronic timepiece that measures and displays the remaining battery level.

REFERENCE SIGNS LIST 100 electronic timepiece 110 dial 121 hour hand 122 minute hand 123 second hand 130 operation unit 131 crown 132 first push button 133 second push button 140 pointer 150 arc group 161 to 163 mode mark 170 band 201 to 211 arc 220 rotation center 311 solar cell 312 Rechargeable battery 320 Control circuit 321 ROM
322 RAM
323 RTC
324 Battery level measurement unit 325 Operation unit 326 Motor drive circuit 330 Drive mechanism 340 Display unit 501-511 Auxiliary scale 901 Measurement unit

Claims (7)

A pointer whose direction changes with rotation,
A display plate on which a plurality of arcs respectively included in a plurality of circles each having a center coincident with the center of rotation of the hands and having different radii are indicated, and among the indicated plurality of arcs, from the center of rotation of the hands. The number of circular arcs present in the direction indicated by the pointer can be different depending on the direction indicated by the pointer,
A measuring unit for measuring a predetermined physical quantity,
The rotation of the hands is controlled so that the number of arcs present in the direction indicated by the hands as viewed from the center of rotation of the hands out of the plurality of arcs is a number corresponding to the physical quantity measured by the measurement unit. A control unit;
An electronic timepiece comprising:   The plurality of arcs are obtained by rotating the points of the plurality of circles located in the same direction as viewed from the center of rotation of the hands in the same direction and different rotation angles about the center of rotation of the hands. 2. The electronic timepiece according to claim 1, wherein each of the arcs is a circular arc.   The electronic timepiece according to claim 2, wherein, of the plurality of arcs, an arc closer to the rotation center of the pointer is shorter.   On the display plate, in the plurality of arcs, each line is drawn from each end opposite to each end located in the same direction as viewed from the center of rotation of the hands toward the center of rotation of the hands. The electronic timepiece according to claim 2 or 3, wherein:   The width of the tip of the pointer on the side in the pointing direction in the pointing direction is smaller than a minimum difference among length differences between the plurality of arcs. Electronic clock.   The electronic timepiece according to any one of claims 1 to 5, wherein a color of a portion of the hands that is visually recognized by a user is a color different from colors of the plurality of arcs.   The electronic timepiece according to any one of claims 1 to 6, wherein at least one of the plurality of arcs has a different color of adjacent arcs.

Images