JP2018155524A - Display device, timepiece, and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device, a timepiece, and an electronic device which can display information in a more three-dimensional manner.SOLUTION: A display part 15A includes: a magnetic force generating part 51 which generates a magnetic force; a case 52A containing a sealed magnetic fluid M; a first pole plate 53A and a second pole plate 54A provided along the case 52A; a first magnetic force transmission member 55 which transmits a magnetic force from the magnetic force generating part 51 to the first pole plate 53A; a second magnetic force transmission member 56 which transmits a magnetic force from the magnetic force generating part 51 to the second pole plate 54A; and a controller which controls transmission of a magnetic force from the magnetic force generating part 51 to the first pole plate 53A and to the second pole plate 54A.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a display device, a timepiece, and an electronic device.

  A device such as a clock includes a display unit that displays information such as time. In such a display unit, various information other than the time may be indicated by marks (symbols) or the like.

For example, Patent Document 1 discloses a configuration including a display unit that displays information indicating whether the moon is full or not.
Patent Document 1 discloses a display unit including a rotating plate on which a circle indicating the moon is drawn and a window exposing a part of the rotating plate. According to this configuration, the fullness of the moon is displayed by the shape of the circle exposed from the window by rotating the rotating plate.
Patent Document 1 also discloses a configuration including a liquid crystal display unit that displays the fullness of the moon.

Japanese Utility Model Publication No. 63-6392

  However, in the configuration disclosed in Patent Document 1, in any case of a configuration using a rotating plate on which a circle indicating the moon is drawn, or a configuration using a liquid crystal display unit that displays the fullness of the moon, The information to be performed is planar.

  Therefore, the present invention has been made in view of the above circumstances, and is to provide a display device, a timepiece, and an electronic device capable of displaying information more three-dimensionally.

  In order to solve the above-described problems, a display device according to the present invention includes a magnetic force generator that generates a magnetic force, a case in which a magnetic fluid is sealed, and a first electrode plate and a second electrode plate provided along the case. A first magnetic force transmission member that transmits magnetic force from the magnetic force generation part to the first pole plate, a second magnetic force transmission member that transmits magnetic force from the magnetic force generation part to the second pole plate, and the magnetic force generation part And a control unit that controls transmission of magnetic force to the first electrode plate and the second electrode plate.

  According to the present invention, the magnetic force generated by the magnetic force generation unit is transmitted to the first electrode plate and the second electrode plate via the first magnetic force transmission member and the second magnetic force transmission member. Then, the magnetic fluid enclosed in the case is moved by the magnetic field acting by the first electrode plate and the second electrode plate, and the shape thereof is three-dimensionally changed. By controlling the transmission of the magnetic force to the first electrode plate and the second electrode plate by the control unit, a three-dimensional image represented by the magnetic fluid can be changed.

  The magnetic force generation unit is an electromagnet including a core and a coil, and the control unit controls the amount of current applied to the coil.

  According to the present invention, the intensity of the magnetic field applied to the magnetic fluid can be changed by controlling the amount of current applied to the coil in the control unit. Accordingly, the shape of the magnetic fluid in the case can be changed according to the strength of the magnetic field, and a variety of information can be displayed by the shape of the magnetic fluid.

  A second surface provided on the first surface side of the case, wherein the first electrode plate and the second electrode plate are opposed to the first surface of the case; It is characterized by being provided along the side.

  According to the present invention, the magnetic fluid in the case can be visually observed through the window without being blocked by the first electrode plate and the second electrode plate.

  Further, the first pole plate and the second pole plate are biased toward the second surface of the case by the first magnetic force transmission member and the second magnetic force transmission member. .

  According to the present invention, by pressing the first electrode plate and the second electrode plate against the second surface of the case, the magnetic field generated by the first electrode plate and the second electrode plate can be efficiently applied to the magnetic fluid in the case. it can.

  The first electrode plate and the second electrode plate are provided so as to cover the entire second surface of the case.

  According to the present invention, the shape of the magnetic fluid can be changed by the magnetic field acting on the entire second surface in the case from the first electrode plate and the second electrode plate.

  Further, at least one of the first electrode plate and the second electrode plate is provided along an outer peripheral portion of the second surface of the case, and an opening is provided at a position facing the central portion of the second surface. It is characterized by having.

  According to the present invention, the magnetic field generated by the first electrode plate and the second electrode plate acts intensively along the outer peripheral portion of the second surface of the case. Thereby, magnetic fluid can be drawn near to the outer periphery of the case, and a portion without magnetic fluid can be formed at the center. On the other hand, in a state where the magnetic field due to the first and second electrode plates is not applied, the magnetic fluid is not attracted to the outer peripheral portion of the case. Therefore, the magnetic fluid can be arranged in an annular shape with a hole in the center or arranged without a hole by turning on / off the magnetic field.

  Moreover, the said case has the large diameter part which has a larger diameter than the said window, It is characterized by the above-mentioned.

  According to the present invention, the magnetic fluid is attracted to the outer peripheral portion of the large diameter portion of the case by the action of the magnetic field. As a result, at least a part of the magnetic fluid is positioned radially outside the window. Therefore, at least a part of the magnetic fluid cannot be viewed through the window.

  Further, the window is characterized in that it has a diameter equal to or smaller than the opening diameter of the opening.

  According to the present invention, the magnetic fluid can be made invisible when the inside of the case is viewed through the window in a state where the magnetic fluid is attracted to the outer peripheral portion of the case by the action of the magnetic field. Thus, the magnetic fluid can be switched between a state in which the magnetic fluid is not visible from the window and a state in which the magnetic fluid is visible from the window by turning on / off the magnetic field.

  The inside of the case is divided into a plurality of sections, and the magnetic fluid is sealed in each section.

  According to the present invention, it is possible to display information by changing the shape of the magnetic fluid in each of the plurality of cases.

  Further, the magnetic fluids enclosed in the plurality of sections are different in color.

  According to the present invention, it is possible to display a plurality of types of information using a plurality of types of magnetic fluids.

  Further, the plurality of sections are characterized in that the case has a different color.

  According to the present invention, it is possible to display information using the color of the case by hiding or exposing a part of the case by changing the shape of the magnetic fluid.

  Further, the magnetic fluid and the nonmagnetic fluid are sealed in the case.

  According to the present invention, the fluidity of the magnetic fluid is improved inside the case.

  The non-magnetic fluid is a fluid that separates from the magnetic fluid.

  According to the present invention, the movement of the magnetic fluid is improved in the non-magnetic fluid, and the display response of information due to the change in the shape of the magnetic fluid can be improved.

  The timepiece of the present invention is characterized by including the display device as described above.

  According to the present invention, various information displays on a timepiece can be performed by changing a three-dimensional image of a magnetic fluid. This makes it possible to display information more prominently or more characteristically.

  In addition, the magnetic force generator is an electromagnet of a time-changing converter.

  According to the present invention, it is not necessary to separately prepare an electromagnet as a magnetic force generation unit for changing the shape of the magnetic fluid. As a result, the watch can be reduced in weight, size and cost.

  In addition, a voltage detection unit that detects an output voltage of a battery that drives an electromagnet of a time display conversion machine, and the control unit detects that the output voltage detected by the voltage detection unit falls below a predetermined reference value. The magnetic force transmitted from the magnetic force generator to the first and second pole plates is changed to change the shape of the magnetic fluid in the case.

  According to the present invention, when the remaining amount of the battery is reduced, the display device can be used as the remaining amount indicator of the battery by changing the shape of the magnetic fluid.

  In addition, a communication unit that communicates with the outside is provided, and the control unit, from the magnetic force generation unit to the first electrode plate and the second electrode plate, when the communication unit performs communication with the outside. The magnetic force to be transmitted is changed, and the shape of the magnetic fluid in the case is changed.

  According to the present invention, information indicating that communication is being performed can be notified to the outside by changing the shape of the magnetic fluid during communication with the outside.

  An electronic device according to the present invention includes the display device as described above.

  According to the present invention, various information displays in an electronic device can be performed by changing a three-dimensional image of a magnetic fluid. Thereby, information can be displayed more prominently or characteristically.

  In addition, the electronic device of the present invention includes a communication unit that performs communication with the outside, and the control unit includes the first pole plate from the magnetic force generation unit when the communication unit is performing communication with the outside. And the magnetic force transmitted to said 2nd pole plate is changed, The shape of the said magnetic fluid in the said case is changed, It is characterized by the above-mentioned.

  According to the present invention, even when the communication unit is communicating with the outside, it is possible to display information such as the communication status in the electronic device by changing the three-dimensional image of the magnetic fluid. This makes it possible to display the state of communication with the outside more prominently or characteristically.

  According to the present invention, the three-dimensional image represented by the magnetic fluid can be changed by controlling the transmission of the magnetic force to the first electrode plate and the second electrode plate. As a result, information can be displayed as a stereoscopic image on the display device.

1 is an external view showing a timepiece according to a first embodiment of the present invention. It is a figure which shows the structure of the display apparatus which concerns on 1st embodiment of this invention, and is AA arrow sectional drawing of FIG. It is a top view which shows the structure of a part of display apparatus. It is a top view which shows the 1st pole plate, 1st magnetic force transmission member, 2nd pole plate, and 2nd magnetic force transmission member which comprise a display apparatus. It is a block diagram which shows the functional structure of a display apparatus. It is a top view which shows an example of the shape of the magnetic fluid in a case in the state which the magnetic field does not act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which the magnetic field does not act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the weak magnetic field act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the medium magnetic field act. It is a top view which shows an example of the shape of the magnetic fluid in the case in the state which made the strong magnetic field act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the strong magnetic field act. It is an external view which shows the timepiece which concerns on 2nd embodiment of this invention. It is a figure which shows the structure of the display apparatus which concerns on 2nd embodiment of this invention, and is BB arrow sectional drawing of FIG. It is a top view which shows the structure of a part of display apparatus. It is sectional drawing which shows the structure of a part of display apparatus. It is a top view which shows an example of the shape of the magnetic fluid in a case in the state which made the magnetic field act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the magnetic field act. It is sectional drawing which shows the modification of 2nd embodiment of this invention. It is a top view which shows the structure of a part of display apparatus which concerns on 3rd embodiment of this invention. It is sectional drawing which shows the structure of a part of display apparatus. It is a top view which shows the structure of a part of display apparatus. It is a top view which shows the 1st pole plate, 1st magnetic force transmission member, 2nd pole plate, and 2nd magnetic force transmission member which comprise a display apparatus. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the weak magnetic field act. It is a top view which shows an example of the shape of the magnetic fluid in the case in the state which made the strong magnetic field act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the strong magnetic field act. It is a top view which shows the 3rd modification of 3rd embodiment of this invention. It is a top view which shows the structure of a part of display apparatus which concerns on 4th embodiment of this invention. It is sectional drawing which shows the structure of a part of display apparatus. It is a top view which shows the structure of a part of display apparatus. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the weak magnetic field act. It is a top view which shows an example of the shape of the magnetic fluid in the case in the state which made the strong magnetic field act. It is sectional drawing which shows an example of the shape of the magnetic fluid in a case in the state which made the strong magnetic field act.

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, an analog quartz watch will be described as an example.
[First embodiment]
(clock)
In general, a machine body including a driving part of a timepiece is referred to as a “movement”. A state in which a dial and a pointer are attached to the movement, and the dial is put into a watch case to form a finished product is referred to as “complete” of the watch.
Of the both sides of the base plate constituting the base of the watch, the side of the watch case with the glass, that is, the side with the dial is referred to as the “back side” of the movement. Of the two sides of the main plate, the side of the watch case with the case back, that is, the side opposite to the dial is referred to as the “front side” of the movement.

FIG. 1 is an external view showing a timepiece according to the first embodiment.
As shown in FIG. 1, the complete timepiece 1 includes a movement 10, a dial 11, hands 12 and 13, and a display unit 15 </ b> A (invoice) in a watch case 3 having a case back cover (not shown) and a glass 2. (Equivalent to “Display device” in the section.)
Is provided.
The dial plate 11 has at least a scale indicating information about time. The hands 12 and 13 include an hour hand 12 indicating the hour and a minute hand 13 indicating the minute.

The movement 10 includes a main plate 20 (see FIG. 2). The main plate 20 constitutes the base of the movement 10. On the back side of the base plate 20, the dial plate 11 is disposed so as to be visible through the glass 2.
On the front side of the main plate 20, a battery (not shown), a crystal unit (not shown), a circuit board (not shown), a step motor 35 (power source), a train wheel mechanism 23, and the like are arranged.

  The step motor 35 includes a coil block 30, a stator 31 disposed so as to contact both end portions of the magnetic core of the coil block 30, and a rotor 32 disposed in a rotor hole 31 a of the stator 31.

  The rotor 32 is supported so as to be rotatable with respect to the main plate 20. The rotor 32 rotates one step every second, and applies a rotational force to the train wheel mechanism 23.

  The train wheel mechanism 23 includes a plurality of gears that rotate based on the rotation of the rotor 32. For example, a second wheel (not shown) that rotates once per hour, an hour wheel (not shown) that rotates once per 12 hours, and the like. Is provided. A minute hand 13 is attached to the center wheel & pinion, and an hour hand 12 is attached to the hour wheel.

(Clock action)
Next, the operation of the timepiece 1 configured as described above will be described.
In the movement 10, when the crystal unit in the crystal unit oscillates at a predetermined frequency, the oscillation unit built in the integrated circuit outputs a reference signal based on the vibration of the crystal unit, and the frequency division unit is the oscillation unit. The output signal from is divided. Based on the output signal of the frequency dividing unit, the driving unit outputs a motor driving signal for driving the step motor 35. When this motor drive signal is input to the coil block 30, the stator 31 is magnetized to rotate the rotor 32. At this time, the rotor 32 continues to rotate, for example, while rotating 180 degrees every second.

  The rotational force of the rotor 32 is transmitted to the train wheel mechanism 23, and each gear constituting the train wheel mechanism 23 rotates. At this time, the second wheel (not shown) rotates once per hour, and the hour wheel (not shown) rotates once per 12 hours. Thereby, the minute hand 13 can be rotated once per hour, and the hour hand 12 can be rotated once per 12 hours.

(Display section)
FIG. 2 is a diagram showing the configuration of the display device according to the first embodiment of the present invention, and is a cross-sectional view taken along the line AA in FIG. FIG. 3 is a plan view showing a partial configuration of the display device. FIG. 4 is a plan view showing a first pole plate, a first magnetic force transmission member, a second pole plate, and a second magnetic force transmission member that constitute the display device. FIG. 5 is a block diagram illustrating a functional configuration of the display device.
As shown in FIGS. 2 and 3, the display unit 15 </ b> A includes a magnetic force generator 51, a case 52 </ b> A, a first pole plate 53 </ b> A and a second pole plate 54 </ b> A, a first magnetic force transmission member 55, and a second magnetic force transmission. The member 56 and the control part 60 (refer FIG. 5) are provided.

  The magnetic force generator 51 is an electromagnet including a core 511 and a coil 512, and generates a magnetic force transmitted to the case 52A. The magnetic force generator 51 generates a magnetic field when a current supplied from a battery (not shown) housed in the watch case 3 is applied to the coil 512. The magnetic force generation part 51 has magnetic pole parts 51n and 51s on the N pole side and the S pole side of the magnetic field generated when the coil 512 is energized.

The case 52A is a flat hollow container made of a transparent material such as glass or resin. The case 52 </ b> A has a first surface 521, a second surface 522, and a peripheral wall portion 523. The first surface 521 is formed by a curved surface that faces the back side of the main plate 20 and has a central portion bulging toward the back side with respect to the outer peripheral portion. The second surface 522 faces the front side of the ground plane 20 and is formed by a plane parallel to the ground plane 20. The peripheral wall portion 523 is formed in a cylindrical shape so as to connect the outer peripheral portion of the first surface 521 and the outer peripheral portion of the second surface 522. The case 52A includes a case main body 520A including a first surface 521 and a peripheral wall portion 523, and a base cover 520B forming a second surface 522. The base cover 520B has an outer diameter larger than that of the case main body 520A, and the outer peripheral portion thereof abuts against the dial plate 11.
The case 52 </ b> A is provided such that the first surface 521 is exposed to the glass 2 side through a circular window 57 formed in the dial 11.

A magnetic fluid M and a non-magnetic fluid L are enclosed in the case 52A.
The magnetic fluid M has a property that the shear resistance (apparent viscosity) increases as the applied magnetic field increases. The magnetic fluid M is a liquid in which a powder made of a magnetic material such as magnetite, ferrite, neodymium, or samarium cobalt is dispersed in a dispersion medium. As the dispersion medium, for example, those containing water, isoparaffin, polyolefin, perfluoropolyether, surfactant and the like can be used. Here, the materials constituting the magnetic fluid M, the mixing ratio thereof, and the like are not limited at all. For example, the powder made of the magnetic material contained in the magnetic fluid M may be appropriately coated on the surface thereof. The powder made of a magnetic material contained in the magnetic fluid M preferably has a particle size as small as possible.

The non-magnetic fluid L is separated without being mixed with the magnetic fluid M. As such a nonmagnetic fluid L, for example, physiological water, various oils, organic solvents, and the like can be used in addition to pure water (water). In addition, as the nonmagnetic fluid L, air or other gas can be used.
In addition, the non-magnetic fluid L preferably has a specific gravity different from that of the magnetic fluid M in order to improve the separability from the magnetic fluid M. For example, the specific gravity of the non-magnetic fluid L is preferably smaller than the specific gravity of the magnetic fluid M. Thereby, in a state where a magnetic field with a certain intensity or more is not acting, the magnetic fluid M sinks vertically downward in the non-magnetic fluid L in the case 52A. Further, the specific gravity of the nonmagnetic fluid L may be larger than the specific gravity of the magnetic fluid M.

The first electrode plate 53A and the second electrode plate 54A are made of metal made of a magnetic material, and are provided along the second surface 522 of the case 52A. The first electrode plate 53A is disposed so as to abut against the second surface 522 of the case 52A, and the second electrode plate 54A is disposed so as to be laminated on the front side of the ground plate 20 with respect to the first electrode plate 53A.
As shown in FIGS. 3 and 4, the first electrode plate 53A and the second electrode plate 54A are formed in a disc shape so as to cover the entire second surface 522 of the case 52A.

  The first magnetic force transmission member 55 is made of a magnetic material such as iron and extends in a band shape. One end of the first magnetic force transmission member 55 is connected to the magnetic pole part 51 n of the magnetic force generation part 51 via a joining pin 58. The other end of the first magnetic force transmission member 55 is integrally joined to the first electrode plate 53A. That is, the first magnetic force transmission member 55 and the first electrode plate 53A are integrally formed from a metal plate by press working or the like.

  The second magnetic force transmission member 56 is made of a magnetic material such as iron and extends in a band shape. One end of the second magnetic force transmission member 56 is connected to the magnetic pole part 51 s of the magnetic force generation part 51 via a joining pin 58. The other end of the second magnetic force transmission member 56 is integrally joined to the second pole plate 54A. That is, the second magnetic force transmission member 56 and the second pole plate 54A are integrally formed from a metal plate by press working or the like.

  The first magnetic force transmission member 55 and the second magnetic force transmission member 56 have bent portions 55 s and 56 s bent in a crank shape between one end and the other end thereof. The plate 53A and the second electrode plate 54A are urged toward the second surface 522 side of the case 52A. Accordingly, the first electrode plate 53A and the second electrode plate 54A are in close contact with the second surface 522 of the case 52A.

  The first magnetic force transmission member 55 and the second magnetic force transmission member 56 transmit the magnetic force generated by the magnetic force generator 51 to the first electrode plate 53A and the second electrode plate 54A.

As shown in FIG. 5, the control unit 60 controls transmission of magnetic force from the magnetic force generation unit 51 to the first electrode plate 53 </ b> A and the second electrode plate 54 </ b> A.
The controller 60 supplies current from a battery (not shown) to the coil 512 of the magnetic force generator 51 at a predetermined timing based on a predetermined computer program. Here, in the control part 60, the timing which supplies an electric current to the coil 512 is not limited at all. For example, a current is supplied to the coil 512 at a timing of, for example, every second, every minute, or every hour, using an output signal output based on the oscillation of the crystal resonator in the crystal unit of the movement 10 as a trigger. it can. The control unit 60 can also supply a current to the coil 512 at an alarm time set by the user.

The display unit 15 </ b> A includes a voltage detection unit 61 that detects an output voltage of a battery (not shown) that drives an electromagnet of the magnetic force generation unit 51, and the control unit 60 is a battery that is detected by the voltage detection unit 61. It is also possible to control the current supply to the coil 512 based on the output voltage.
In this case, the control unit 60 supplies current to the coil 512 when the output voltage detected by the voltage detection unit 61 falls below a predetermined reference value, and from the magnetic force generation unit 51 to the first pole plate 53A and the first pole plate 53A. Magnetic force is transmitted to the bipolar plate 54A.

  The timepiece 1 can also include a communication unit 62 that communicates with the outside, such as Bluetooth (registered trademark) or infrared communication. In this case, the control unit 60 supplies a current to the coil 512 when the communication unit 62 is communicating with the outside, and applies a magnetic force from the magnetic force generation unit 51 to the first electrode plate 53A and the second electrode plate 54A. Communicate.

(Operation of the display)
Next, the operation of the display unit 15A configured as described above will be described.
In the display unit 15 </ b> A, the magnetic fluid M in the case 52 </ b> A can be visually observed from the window 57 formed in the dial 11.
In the display unit 15 </ b> A, the magnetic force generated by the magnetic force generation unit 51 is transmitted to the first electrode plate 53 </ b> A and the second electrode plate 54 </ b> A via the first magnetic force transmission member 55 and the second magnetic force transmission member 56. Then, the magnetic fluid M enclosed in the case 52A moves by the magnetic field lines of the magnetic field acting by the first electrode plate 53A and the second electrode plate 54A, and its shape changes three-dimensionally.

  Here, FIG. 6 and FIG. 7 show an example of the shape of the magnetic fluid M in the case 52A in a state where a magnetic field is not acting. In the example of FIGS. 6 and 7, the magnetic fluid M is located in a central portion in the case 52 </ b> A in a state where no magnetic field is acting.

When a magnetic field is applied to such a magnetic fluid M, the shape of the magnetic fluid M changes as shown in FIGS.
FIG. 8 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a weak magnetic field is applied.
As shown in FIG. 8, when a weak magnetic field is applied by the first electrode plate 53A and the second electrode plate 54A, the magnetic lines Lm pass through the entire second surface 522 of the case 52A. It spreads thinly along the entire surface of the second surface 522 of 52A.

FIG. 9 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a medium magnetic field is applied.
As shown in FIG. 9, when an intermediate magnetic field stronger than that in FIG. 8 is applied by the first electrode plate 53 </ b> A and the second electrode plate 54 </ b> A, stronger magnetic field lines are generated on the entire second surface 522. It acts in a direction perpendicular to the surface 522. Thereby, the magnetic fluid M protrudes in a needle shape along the magnetic field lines along the second surface 522 of the case 52A.

FIG. 10 is a plan view showing an example of the shape of the magnetic fluid in the case in a state where a strong magnetic field is applied. FIG. 11 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a strong magnetic field is applied.
As shown in FIGS. 10 and 11, when a stronger magnetic field than that in FIG. 9 is applied by the first electrode plate 53 </ b> A and the second electrode plate 54 </ b> A, a stronger magnetic field line Lm is generated on the entire second surface 522. , Acting in a direction perpendicular to the second surface 522. Thereby, the magnetic fluid M protrudes higher in a needle shape along the magnetic field lines along the second surface 522 of the case 52A.

  In this way, the control unit 60 controls the transmission of magnetic force to the first electrode plate 53A and the second electrode plate 54A, thereby changing the three-dimensional image represented by the magnetic fluid M. As a result, the user can clearly recognize the information from the window 57 by the change in the three-dimensional image of the magnetic fluid M.

The display unit 15A described above includes a magnetic force generating unit 51 that generates magnetic force, a case 52A in which a magnetic fluid M is enclosed, a first electrode plate 53A and a second electrode plate 54A provided along the case 52A, and a magnetic force. From the first magnetic force transmission member 55 for transmitting the magnetic force from the generator 51 to the first pole plate 53A, the second magnetic force transmission member 56 for transmitting the magnetic force from the magnetic force generator 51 to the second pole plate 54A, and the magnetic force generator 51 And a control unit 60 that controls transmission of magnetic force to the first electrode plate 53A and the second electrode plate 54A.
With this configuration, the magnetic fluid M enclosed in the case 52A moves by the magnetic field acting by the first electrode plate 53A and the second electrode plate 54A, and the shape thereof can be three-dimensionally changed. . Further, the three-dimensional image represented by the magnetic fluid M can be changed by controlling the transmission of the magnetic force to the first electrode plate 53A and the second electrode plate 54A by the control unit 60. Thereby, in the display unit 15A, information can be displayed as a three-dimensional image, and information can be displayed more clearly.

The magnetic force generator 51 is an electromagnet including a core 511 and a coil 512, and the controller 60 controls the amount of current applied to the coil 512.
By comprising in this way, the intensity | strength of the magnetic field made to act on the magnetic fluid M can be changed. Thereby, the shape of the magnetic fluid M can be changed in the case 52A according to the strength of the magnetic field, and a variety of information can be displayed by the shape of the magnetic fluid M.

The display unit 15A is provided on the first surface 521 side of the case 52A, and includes a window 57 that can visually recognize the inside of the case 52A. The first electrode plate 53A and the second electrode plate 54A are provided on the first surface of the case 52A. It is provided along the second surface 522 side facing 521.
With this configuration, the magnetic fluid M in the case 52A can be visually observed without being blocked by the first electrode plate 53A and the second electrode plate 54A.

The first electrode plate 53A and the second electrode plate 54A are urged toward the second surface 522 of the case 52A by the first magnetic force transmission member 55 and the second magnetic force transmission member 56.
With this configuration, the first electrode plate 53A and the second electrode plate 54A are pressed against the second surface 522 of the case 52A, and the magnetic field generated by the first electrode plate 53A and the second electrode plate 54A is magnetized in the case 52A. The fluid M can be efficiently operated.

The first electrode plate 53A and the second electrode plate 54A are provided so as to cover the entire second surface 522 of the case 52A.
With this configuration, the shape of the magnetic fluid M can be changed by the magnetic field acting on the entire second surface 522 in the case 52A from the first electrode plate 53A and the second electrode plate 54A.

Further, a magnetic fluid M and a non-magnetic fluid L are sealed inside the case 52A.
With such a configuration, the fluidity of the magnetic fluid M becomes good inside the case 52A.

Further, the nonmagnetic fluid L is a fluid that separates from the magnetic fluid M.
By configuring in this manner, the movement of the magnetic fluid M in the non-magnetic fluid L becomes good, and the response of information display due to the shape change of the magnetic fluid M can be enhanced.

Further, the timepiece 1 described above includes the display unit 15A as described above.
Thereby, various information displays on the timepiece 1 can be performed by changing the three-dimensional image of the magnetic fluid M. This makes it possible to display information more prominently or more characteristically.

The timepiece 1 also includes a voltage detection unit 61 that detects an output voltage of a battery (not shown) that drives the movement 10, and the control unit 60 uses a reference value in which the output voltage detected by the voltage detection unit 61 is predetermined. The magnetic force is transmitted from the magnetic force generator 51 to the first electrode plate 53A and the second electrode plate 54A to change the shape of the magnetic fluid M in the case 52A.
With this configuration, when the remaining amount of the battery is reduced, the shape of the magnetic fluid M is changed, so that the display unit 15A can be used as the remaining amount indicator of the battery.

In addition, the timepiece 1 includes a communication unit 62 that performs communication with the outside, and the control unit 60 includes the first electrode plate 53A and the first electrode plate 53A and the second plate when the communication unit 62 performs communication with the outside. Magnetic force is transmitted to the bipolar plate 54A, and the shape of the magnetic fluid M in the case 52A is changed.
With this configuration, when the communication unit 62 performs communication with the outside, information indicating that communication is being performed can be notified to the outside by changing the shape of the magnetic fluid M. .

[Second Embodiment]
Next, a second embodiment of the display device, timepiece, and electronic device according to the present invention will be described.
In the second embodiment described below, the shape of the case is different from that of the first embodiment. In addition, in 2nd embodiment demonstrated below, about the structure which is common in said 1st embodiment, the same code | symbol is attached | subjected in a figure and the description is abbreviate | omitted.

FIG. 12 is an external view showing a timepiece according to the second embodiment of the present invention. FIG. 13 is a diagram showing a configuration of a display device according to the second embodiment of the present invention, and is a cross-sectional view taken along line BB in FIG. FIG. 14 is a plan view showing a partial configuration of the display device. FIG. 15 is a cross-sectional view illustrating a partial configuration of the display device.
As shown in FIGS. 12 and 13, the display unit 15 </ b> B (corresponding to “display device” in the claims) of the timepiece 1 in this embodiment includes a magnetic force generation unit 51, a case 52 </ b> B, a first electrode plate 53 </ b> B, 54 A of 2nd pole plates, the 1st magnetic force transmission member 55, the 2nd magnetic force transmission member 56, and the control part 60 (refer FIG. 5) are provided.

  As shown in FIGS. 13, 14, and 15, the case 52 </ b> B is a flat hollow container made of a transparent material such as glass or resin. The case 52B has a first surface 521, a second surface 522, and a peripheral wall portion 524.

  The first surface 521 is formed by a curved surface that faces the back side of the main plate 20 and has a central portion bulging toward the back side with respect to the outer peripheral portion. The second surface 522 faces the front side of the ground plane 20 and is formed by a plane parallel to the ground plane 20.

  The peripheral wall portion 524 connects the outer peripheral portion of the first surface 521 and the outer peripheral portion of the second surface 522. The peripheral wall portion 524 has a small diameter portion 524a having an outer diameter fitted into a window 57 formed on the dial 11 on the first surface 521 side. The peripheral wall portion 524 has a large diameter portion 524b having a larger outer diameter than the window 57 and the small diameter portion 524a on the second surface 522 side. The peripheral wall portion 524 has a step portion 524c that abuts on the base plate 20 side of the dial 11 between the small diameter portion 524a and the large diameter portion 524b.

  The case 52 </ b> B is provided by inserting the small diameter portion 524 a of the peripheral wall portion 524 into the window 57 and exposing the first surface 521 to the glass 2 side through the window 57. The case 52B is covered with the dial 11 in the large-diameter portion 524b such that an annular portion radially outside the small-diameter portion 524a is located radially outside the window 57.

A magnetic fluid M and a non-magnetic fluid L are sealed inside the case 52B.
The first electrode plate 53B and the second electrode plate 54A are provided along the second surface 522 of the case 52B.

  The first electrode plate 53B is made of a metal made of a magnetic material, and is provided along the second surface 522 of the case 52B. The first electrode plate 53B has an annular shape that continues along the outer periphery of the second surface 522 of the case 52B, and has an opening 531 at a position facing the center of the second surface 522. The opening 531 has an opening diameter larger than the inner diameter of the window 57. In other words, the window 57 has an inner diameter equal to or smaller than the opening diameter of the opening 531. Thus, the annular first electrode plate 53 </ b> B is located on the radially outer side of the window 57 and is covered with the dial 11.

  Similarly to the first embodiment, the second electrode plate 54A is made of a metal made of a magnetic material, and is stacked on the front side of the ground plate 20 with respect to the first electrode plate 53B. The second electrode plate 54A is formed in a disc shape so as to cover the entire surface of the second surface 522 of the case 52B.

  The first magnetic force transmission member 55 and the second magnetic force transmission member 56 are provided so as to transmit the magnetic force generated by the magnetic force generator 51 to the first electrode plate 53B and the second electrode plate 54A.

  The controller 60 controls the transmission of the magnetic force from the magnetic force generator 51 to the first electrode plate 53B and the second electrode plate 54A in the same manner as in the first embodiment.

(Operation of the display)
Next, the operation of the display unit 15B configured as described above will be described.
In the display unit 15B, the magnetic fluid M in the case 52B can be visually observed from the window 57 formed in the dial plate 11.
In the display unit 15B, the magnetic force generated by the magnetic force generation unit 51 is transmitted to the first electrode plate 53B and the second electrode plate 54A via the first magnetic force transmission member 55 and the second magnetic force transmission member 56. Then, the magnetic fluid M enclosed in the case 52B moves by the magnetic field lines of the magnetic field acting by the first electrode plate 53B and the second electrode plate 54A, and its shape changes three-dimensionally.

  As shown in FIGS. 14 and 15, the magnetic fluid M is solidly positioned at the center in the case 52 </ b> B in a state where no magnetic field is acting. Thereby, the magnetic fluid M is visible through the window 57.

FIG. 16 is a plan view showing an example of the shape of the magnetic fluid in the case in a state where a magnetic field is applied. FIG. 17 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a magnetic field is applied.
As shown in FIGS. 16 and 17, when a magnetic field is applied by the first pole plate 53B and the second pole plate 54A, the lines of magnetic force concentrate on the outer periphery of the case 52B where the annular first pole plate 53B is located. . For this reason, the magnetic fluid M is drawn to the outer peripheral part of the case 52B and forms an annular shape in which the magnetic fluid M does not exist in the central part.
At this time, the case 52 </ b> B has a large-diameter portion 524 b that extends outward in the radial direction from the window 57. Thereby, the magnetic fluid M attracted to the outer peripheral portion enters the large-diameter portion 524b on the outer side in the radial direction from the window 57. Thereby, when it sees from the window 57 side, the magnetic fluid M will be in the state covered with the dial 11, and will be in the state which cannot be visually recognized.

In the display unit 15B described above, the first electrode plate 53B is provided along the outer periphery of the second surface 522 of the case 52B, and has an opening 531 at a position facing the center of the second surface 522. Yes.
With this configuration, the magnetic field generated by the first electrode plate 53B and the second electrode plate 54A acts intensively along the outer periphery of the second surface 522 of the case 52B. As a result, the magnetic fluid M can be attracted to the outer peripheral portion of the case 52B, and a portion without the magnetic fluid M can be formed in the central portion. In a state where no magnetic field is applied, the magnetic fluid M is solidified in a three-dimensional shape without being attracted to the outer periphery of the case 52B. Therefore, the magnetic fluid M can be arranged in an annular shape with a hole in the center or arranged without a hole by turning the magnetic field on and off. Therefore, the display unit 15 </ b> B can display information depending on the presence or absence of the magnetic fluid M visible through the window 57. Thereby, in the display part 15B, it becomes possible to display information by a three-dimensional image, and it becomes possible to display information more clearly.

Further, the window 57 is equal to or smaller than the opening diameter of the opening 531.
With this configuration, when the magnetic fluid M is attracted to the outer peripheral portion of the case 52B by the action of the magnetic field, the magnetic fluid M cannot be seen when viewed inside the case 52B through the window 57. Can do. As a result, the magnetic fluid M can be switched between a state in which the magnetic fluid M is not visible from the window 57 and a state in which the magnetic fluid M is visible from the window 57 by ON / OFF of the magnetic field.

Further, the timepiece 1 described above includes the display unit 15B as described above.
Accordingly, as in the first embodiment, various information displays on the timepiece 1 can be performed by changing a three-dimensional image of the magnetic fluid M. Thereby, information can be displayed more prominently or characteristically.

(Modification of the second embodiment)
In the above embodiment, the magnetic fluid M attracted to the outer peripheral portion by the magnetic field enters the large-diameter portion 524b radially outside the window 57, and the magnetic fluid M cannot be visually recognized when viewed from the window 57 side. However, the present invention is not limited to this.
FIG. 18 is a cross-sectional view showing a modification of the second embodiment of the present invention.
For example, as shown in FIG. 18, the magnetic fluid M attracted to the outer peripheral portion by the magnetic field enters the large-diameter portion 524b radially outside the window 57, and when viewed from the window 57 side, the magnetic fluid M The inner peripheral edge Mr may be visible in a ring shape.

  Further, in the above embodiment, only the first electrode plate 53B is formed in an annular shape, but the second electrode plate 54A is also formed in an annular shape having an opening in the center, similarly to the first electrode plate 53B. Also good.

[Third embodiment]
Next, a third embodiment of the display device, timepiece, and electronic device according to the present invention will be described.
The third embodiment described below is different from the first and second embodiments in that the inside of the case is divided into a plurality of parts. In addition, in 3rd embodiment demonstrated below, about the structure which is common in said 1st, 2nd embodiment, the same code | symbol is attached | subjected in a figure and the description is abbreviate | omitted.

FIG. 19 is a plan view showing a partial configuration of the display device according to the third embodiment of the present invention. FIG. 20 is a cross-sectional view illustrating a partial configuration of the display device. FIG. 21 is a plan view showing a partial configuration of the display device. FIG. 22 is a plan view showing a first pole plate, a first magnetic force transmission member, a second pole plate, and a second magnetic force transmission member that constitute the display device.
As shown in FIGS. 19 to 21, the display unit 15 </ b> C (corresponding to “display device” in the claims) of the timepiece 1 includes a magnetic force generation unit 51 (see FIG. 21), a case 52 </ b> C, and a first electrode plate 53 </ b> C. And a second pole plate 54C (see FIG. 21), a first magnetic force transmission member 55, a second magnetic force transmission member 56 (see FIG. 21), and a control unit 60 (see FIG. 5).

  The magnetic force generator 51 is an electromagnet including a core 511 and a coil 512, and generates a magnetic force that is transmitted to the case 52C.

As shown in FIGS. 19 and 20, the case 52C is a flat hollow container made of a transparent material such as glass or resin. The case 52 </ b> C includes a first surface 521, a second surface 522, a peripheral wall portion 523, and a partition portion 525.
The partition portion 525 extends in the radial direction of the case 52C, and divides the internal space of the case 52C into two spaces 526A and 526B.
The case 52 </ b> C is provided such that the first surface 521 is exposed to the glass 2 side through a circular window 57 formed in the dial 11.

  Inside the case 52C, a magnetic fluid M and a non-magnetic fluid L are sealed in the spaces 526A and 526B.

  As shown in FIGS. 21 and 22, the first electrode plate 53 </ b> C and the second electrode plate 54 </ b> C are made of a metal made of a magnetic material, and are provided along the second surface 522 of the case 52 </ b> C. The first electrode plate 53C is disposed so as to abut against the second surface 522 of the case 52C, and the second electrode plate 54C is disposed so as to be laminated on the front side of the ground plate 20 with respect to the first electrode plate 53C.

  The first electrode plate 53C and the second electrode plate 54C have slits 535 and 545 at portions facing the partitioning portion 525 of the case 52C. Here, in the first electrode plate 53C, the slit 535 has an end portion on the side opposite to the end portion 53d on the side where the first magnetic force transmission member 55 is connected, on the side where the second magnetic force transmission member 56 is connected. An opening is formed on the 53e side. On the other hand, in the second pole plate 54C, the slit 545 is on the side opposite to the end 54d on the side where the second magnetic force transmission member 56 is connected, on the side where the first magnetic force transmission member 55 is connected. An opening is formed on the end 54e side. As a result, the first pole plate 53C and the first magnetic force transmission member 55, and the second pole plate 54C and the second magnetic force transmission member 56, which are integrally formed, are made of the same press-formed material with the front and back turned upside down. By doing so, it can be formed.

(Operation of the display)
Next, the operation of the display unit 15C configured as described above will be described.
In the display unit 15C, the magnetic fluid M in the spaces 526A and 526B of the case 52C can be viewed from the window 57 formed in the dial plate 11.
In the display unit 15 </ b> C, the magnetic force generated by the magnetic force generation unit 51 is transmitted to the first electrode plate 53 </ b> C and the second electrode plate 54 </ b> C via the first magnetic force transmission member 55 and the second magnetic force transmission member 56. Then, the magnetic fluid M enclosed in the spaces 526A and 526B of the case 52C is moved by the magnetic field lines of the magnetic field acting by the first electrode plate 53C and the second electrode plate 54C, and the shape thereof is three-dimensionally changed.

  As shown in FIG. 19 and FIG. 20, the magnetic fluid M is firmly positioned at the center in the spaces 526A and 526B of the case 52C when no magnetic field is applied.

When a magnetic field is applied to such a magnetic fluid M, the shape of the magnetic fluid M changes as shown in FIGS.
FIG. 23 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a weak magnetic field is applied.
As shown in FIG. 23, when a weak magnetic field is applied by the first electrode plate 53C and the second electrode plate 54C, the lines of magnetic force pass through the second surface 522 in the spaces 526A and 526B of the case 52C. The fluid M spreads thinly along the second surface 522 in the spaces 526A and 526B of the case 52C.

FIG. 24 is a plan view showing an example of the shape of the magnetic fluid in the case in a state where a strong magnetic field is applied. FIG. 25 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a strong magnetic field is applied.
As shown in FIGS. 24 and 25, when a strong magnetic field stronger than that in FIG. 23 is applied by the first pole plate 53C and the second pole plate 54C, stronger magnetic field lines are generated in the spaces 526A and 526B. It acts in a direction perpendicular to the surface 522. Accordingly, the magnetic fluid M protrudes higher in a needle shape along the magnetic field lines along the second surface 522 in the spaces 526A and 526B of the case 52C.

  As described above, the control unit 60 controls the transmission of the magnetic force to the first electrode plate 53C and the second electrode plate 54C, so that the three-dimensional space represented by the magnetic fluid M in each of the spaces 526A and 526B. Change the image. As a result, the user can clearly recognize the information from the window 57 by the change in the three-dimensional image of the magnetic fluid M.

  In the display unit 15C described above, the magnetic fluid M sealed in the spaces 526A and 526B of the case 52C is caused by the magnetic field acting by the first electrode plate 53C and the second electrode plate 54C as in the first embodiment. It can move and change its shape three-dimensionally. Furthermore, the three-dimensional image represented by the magnetic fluid M can be changed by controlling the transmission of the magnetic force to the first electrode plate 53C and the second electrode plate 54C by the control unit 60. Thereby, in the display unit 15C, information can be displayed as a three-dimensional image, and information can be displayed more clearly.

Further, the inside of the case 52C is divided into a plurality of spaces 526A and 526B, and the magnetic fluid M is sealed in the spaces 526A and 526B.
As a result, it is possible to display information by changing the shape of the magnetic fluid M in each of the spaces 526A and 526B of the case 52C.

The timepiece 1 described above includes the display unit 15C as described above.
As a result, various information displays on the timepiece 1 can be performed by changing the three-dimensional images of the magnetic fluids M in the spaces 526A and 526B. Thereby, information can be displayed more prominently or characteristically.

(First modification of the third embodiment)
Next, modified examples of the third embodiment will be described. In the third embodiment, the magnetic fluid M is sealed in the spaces 526A and 526B, respectively, but the colors of the sealed magnetic fluid M may be different in the plurality of spaces 526A and 526B. Further, the colors of the enclosed nonmagnetic fluid L may be made different in the plurality of spaces 526A and 526B.
By doing in this way, it becomes possible to perform the information display by the magnetic fluid M of a plurality of kinds of colors in the plurality of spaces 526A and 526B.

(Second modification of the third embodiment)
In the configuration of the third embodiment, the color of the material such as glass or resin forming the second surface 522 may be different between the space 526A and the space 526B of the case 52C.
In this way, when the shape of the magnetic fluid M changes due to the application of the magnetic field, the space 526A and the space 526B expose the second surface 522 concealed by the magnetic fluid M, The colors will be different from each other. This makes it possible to display different types of information in the plurality of spaces 526A and 526B by using different colors.

(Third modification of the third embodiment)
In the configuration of the third embodiment, the magnetic field generated by the magnetic force transmitted from the common magnetic force generation unit 51 is generated in the space 526A and the space 526B. However, the present invention is not limited to this.
For example, as shown in FIG. 26, the space 526A and the space 526B may include a first electrode plate 53D and a second electrode plate 54D that are independent of each other. The first electrode plate 53D and the second electrode plate 54D in the space 526A and the first electrode plate 53D and the second electrode plate 54D in the space 526B are respectively connected via the first magnetic force transmission member 55D and the second magnetic force transmission member 56D. And magnetically connected to the separate magnetic force generators 51D.
According to such a configuration, the magnetic field can be individually applied to the magnetic fluid M in the spaces 526A and 526B, and the shape of the magnetic fluid M can be controlled independently.

[Fourth embodiment]
Next, a display device, a timepiece, and an electronic device according to a fourth embodiment of the invention will be described.
The fourth embodiment described below is different from the first to third embodiments in that the inside of the case is divided into a plurality of parts. In addition, in 4th embodiment demonstrated below, about the structure which is common in the said 1st-3rd embodiment, the same code | symbol is attached | subjected in a figure and the description is abbreviate | omitted.

FIG. 27 is a plan view showing a partial configuration of a display device according to the fourth embodiment of the present invention. FIG. 28 is a cross-sectional view illustrating a partial configuration of the display device. FIG. 29 is a plan view showing a partial configuration of the display device.
As shown in FIGS. 27 to 29, the display unit 15E (corresponding to “display device” in the claims) of the timepiece 1 includes a magnetic force generation unit 51 (see FIG. 29), a case 52E, and a first electrode plate 53E. And a second pole plate 54E, a first magnetic force transmission member 55, a second magnetic force transmission member 56 (see FIG. 29), and a control unit 60 (see FIG. 5).

  The magnetic force generator 51 is an electromagnet including a core 511 and a coil 512, and generates a magnetic force transmitted to the case 52E.

As shown in FIGS. 27 and 28, the case 52E is a flat hollow container made of a transparent material such as glass or resin. The case 52E has a first surface 521, a second surface 522, a peripheral wall portion 523, and a partition portion 527.
The partition portion 527 extends in a cross shape in the case 52E, and divides the internal space of the case 52E into four spaces 528A, 528B, 528C, and 528D.
The case 52E is provided such that the first surface 521 is exposed to the glass 2 side through a circular window 57 formed in the dial plate 11.

  Inside the case 52E, the magnetic fluid M and the non-magnetic fluid L are sealed in the spaces 528A, 528B, 528C, and 528D.

  As shown in FIG. 28, the first electrode plate 53E and the second electrode plate 54E are made of a metal made of a magnetic material, and are provided along the second surface 522 of the case 52E. The first electrode plate 53E is disposed so as to abut against the second surface 522 of the case 52E, and the second electrode plate 54E is disposed so as to be laminated on the front side of the ground plate 20 with respect to the first electrode plate 53E.

  As shown in FIG. 29, the first electrode plate 53E has a cross-shaped slit 537 at a portion facing the partition portion 527 of the case 52E.

(Operation of the display)
Next, the operation of the display unit 15E configured as described above will be described.
In the display unit 15E, the magnetic fluid M in the spaces 528A, 528B, 528C, and 528D of the case 52E can be viewed from the window 57 formed in the dial plate 11.
In the display unit 15E, the magnetic force generated by the magnetic force generation unit 51 is transmitted to the first electrode plate 53E and the second electrode plate 54E via the first magnetic force transmission member 55 and the second magnetic force transmission member 56. Then, the magnetic fluid M enclosed in the spaces 528A, 528B, 528C, and 528D of the case 52E moves by the magnetic field lines of the magnetic field acting by the first electrode plate 53E and the second electrode plate 54E, and the shape thereof is three-dimensional. To change.

  As shown in FIGS. 27 and 28, the magnetic fluid M is located in a central portion in each of the spaces 528A, 528B, 528C, and 528D of the case 52E when the magnetic field is not acting.

When a magnetic field is applied to such a magnetic fluid M, the shape of the magnetic fluid M changes as shown in FIGS.
FIG. 30 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a weak magnetic field is applied.
As shown in FIG. 30, when a weak magnetic field is applied by the first electrode plate 53E and the second electrode plate 54E, the lines of magnetic force pass through the second surface 522 in the spaces 528A, 528B, 528C, and 528D of the case 52E. Therefore, the magnetic fluid M spreads thinly along the second surface 522 in the spaces 528A, 528B, 528C, and 528D of the case 52E.

FIG. 31 is a plan view showing an example of the shape of the magnetic fluid in the case in a state where a strong magnetic field is applied. FIG. 32 is a cross-sectional view showing an example of the shape of the magnetic fluid in the case in a state where a strong magnetic field is applied.
As shown in FIGS. 31 and 32, when a strong magnetic field stronger than that in FIG. 30 is applied by the first electrode plate 53E and the second electrode plate 54E, stronger magnetic lines of force are generated in the spaces 528A, 528B, 528C, and 528D. Thus, it acts in a direction perpendicular to the second surface 522. Thus, the magnetic fluid M protrudes higher in a needle shape along the magnetic field lines along the second surface 522 in the spaces 528A, 528B, 528C, and 528D of the case 52E.

  In this way, the control unit 60 controls the transmission of the magnetic force to the first electrode plate 53E and the second electrode plate 54E, and is represented by the magnetic fluid M in each of the spaces 528A, 528B, 528C, and 528D. Change the three-dimensional image. As a result, the user can clearly recognize the information from the window 57 by the change in the three-dimensional image of the magnetic fluid M.

  The display unit 15E described above is enclosed in the spaces 528A, 528B, 528C, and 528D of the case 52E by a magnetic field acting by the first electrode plate 53E and the second electrode plate 54E, as in the first embodiment. The magnetic fluid M moves and its shape can be changed three-dimensionally. Furthermore, the three-dimensional image represented by the magnetic fluid M can be changed by controlling the transmission of the magnetic force to the first electrode plate 53E and the second electrode plate 54E by the control unit 60. As a result, information can be displayed as a three-dimensional image on the display unit 15E, and information can be displayed more clearly.

Further, the inside of the case 52E is divided into a plurality of spaces 528A, 528B, 528C, and 528D, and the magnetic fluid M is sealed in each of the spaces 528A, 528B, 528C, and 528D.
As a result, it is possible to display information by changing the shape of the magnetic fluid M in each of the spaces 528A, 528B, 528C, and 528D of the case 52E.

The timepiece 1 described above includes the display unit 15E as described above.
As a result, various types of information display on the timepiece 1 can be performed by changing three-dimensional images of the magnetic fluids M in the spaces 528A, 528B, 528C, and 528D. Thereby, information can be displayed more prominently or characteristically.

(Other embodiments)
The present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications are conceivable within the technical scope thereof.
For example, in each of the above-described embodiments, the magnetic field applied to the magnetic fluid M by the display units 15A to 15E is generated by the magnetic force generation unit 51. Instead of this, a time display conversion machine in the timepiece 1 is provided. The coil block 30 (corresponding to “electromagnet” in the claims) of the step motor 35 to be configured may be used. Thereby, the magnetic force generator 51 can be omitted, and the number of parts constituting the timepiece 1 can be reduced.

  Further, in each of the above-described embodiments, the timepiece 1 is provided with the single display unit 15A, but is not limited thereto. Therefore, for example, a plurality of display units 15A may be provided, and each display unit 15A may be controlled simultaneously or individually to display information by changing the shape of the magnetic fluid M.

Further, the configuration, arrangement, and the like of each part of the timepiece 1 and the movement 10 may be any other configuration as long as they do not depart from the spirit of the present invention.
In each of the above embodiments, the case where the display device according to the present invention is applied to the quartz type timepiece 1 has been described as an example. However, the display device may be applied to a mechanical type timepiece or a digital timepiece. Furthermore, the display device according to the present invention is not limited to a watch, and can be applied to various electronic devices such as various mobile devices, tablet devices, and portable game machines.
In addition, the constituent elements in the above-described embodiments can be appropriately replaced with known constituent elements without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Watch 2 Glass 3 Watch case 10 Movement 11 Dial 15A, 15B, 15C, 15E Display part (display apparatus)
30 Coil block (electromagnet)
51, 51D Magnetic force generators 52A, 52B, 52C, 52E Cases 53A, 53B, 53C, 53D, 53E First pole plates 54A, 54C, 54D, 54E Second pole plates 55, 55D First magnetic force transmission members 56, 56D First Double magnetic force transmission member 57 Window 60 Control unit 61 Voltage detection unit 62 Communication unit 511 Core 512 Coil 521 First surface 522 Second surface 524b Large diameter portion 526A, 526B Space 528A, 528B, 528C, 528D Space 531 Opening L Nonmagnetic Fluid M Magnetic fluid

Claims (19)

A magnetic force generator that generates magnetic force;
A case filled with magnetic fluid;
A first electrode plate and a second electrode plate provided along the case;
A first magnetic force transmission member that transmits magnetic force from the magnetic force generator to the first electrode plate;
A second magnetic force transmission member that transmits magnetic force from the magnetic force generator to the second electrode plate;
A control unit for controlling transmission of magnetic force from the magnetic force generation unit to the first electrode plate and the second electrode plate;
A display device comprising: The magnetic force generator is an electromagnet composed of a core and a coil,
The display device according to claim 1, wherein the control unit controls an amount of current applied to the coil. Provided on the first surface side of the case, provided with a window that can be visually recognized in the case,
The display device according to claim 1, wherein the first electrode plate and the second electrode plate are provided along a second surface side facing the first surface of the case.   The first pole plate and the second pole plate are urged toward the second surface of the case by the first magnetic force transmission member and the second magnetic force transmission member. 3. The display device according to 3.   The display device according to claim 3, wherein the first electrode plate and the second electrode plate are provided so as to cover the entire second surface of the case.   At least one of the first electrode plate and the second electrode plate is provided along an outer peripheral portion of the second surface of the case, and has an opening at a position facing the central portion of the second surface. The display device according to claim 3, wherein the display device is a display device.   The display device according to claim 6, wherein the case has a large-diameter portion having a larger diameter than the window.   The display device according to claim 7, wherein the window is equal to or smaller than an opening diameter of the opening.   The display device according to any one of claims 1 to 8, wherein the inside of the case is divided into a plurality of sections, and the magnetic fluid is sealed in each section.   The display device according to claim 9, wherein a color of the magnetic fluid sealed in the plurality of sections is different.   The display device according to claim 9, wherein the case has a different color in the plurality of sections.   The display device according to claim 1, wherein the magnetic fluid and the non-magnetic fluid are sealed inside the case.   The display device according to claim 12, wherein the nonmagnetic fluid is a fluid that separates from the magnetic fluid.   A timepiece comprising the display device according to claim 1.   The timepiece according to claim 14, wherein the magnetic force generation unit is an electromagnet of a conversion machine for time display. A voltage detection unit that detects the output voltage of the battery that drives the electromagnet of the converter for time display,
The control unit changes a magnetic force transmitted from the magnetic force generation unit to the first electrode plate and the second electrode plate when the output voltage detected by the voltage detection unit falls below a predetermined reference value. The timepiece according to claim 14, wherein the shape of the magnetic fluid in the case is changed. It has a communication unit that communicates with the outside,
The control unit changes a magnetic force transmitted from the magnetic force generation unit to the first electrode plate and the second electrode plate when the communication unit is communicating with the outside, and the magnetic unit in the case The timepiece according to any one of claims 14 to 16, wherein the shape of the fluid is changed.   An electronic device comprising the display device according to claim 1. It has a communication unit that communicates with the outside,
The control unit changes a magnetic force transmitted from the magnetic force generation unit to the first electrode plate and the second electrode plate when the communication unit is communicating with the outside, and the magnetic unit in the case The electronic device according to claim 18, wherein the shape of the fluid is changed.

Images