equipment

Abstract

The present disclosure provides a cosmetic device capable of applying interference wave EMS in a wide range.SOLUTION: A device provided with: a first electrode pair which is provided with a first positive electrode and a first negative electrode and in which a first current fluctuating at a first frequency flows between the first positive electrode and the first negative electrode; and a second electrode pair which is provided with a second positive electrode and a second negative electrode and in which a second current fluctuating at a second frequency different from the first frequency flows between the second positive electrode and the second negative electrode, wherein the range of interference in which the first current and the second current interfere with each other can be changed among the first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an instrument. [Background technology]

[0002] Patent Document 1 discloses a beauty device that includes an electrode group having three or more electrodes that pass a current through the skin of a user, and a control unit that sets two or more positive poles and one or more negative poles for the electrodes included in the electrode group and changes the settings at predetermined intervals. Patent Document 1 also discloses that the control unit causes an interfering low-frequency current (sometimes referred to as an interfering wave) to flow through the skin of the user by differentiating the characteristics of the current applied to a first positive pole and a second positive pole selected from the two or more positive poles. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-167584 Summary of the Invention [Means for solving the problem]

[0004] A first aspect of the present disclosure is a device comprising: a first electrode pair having a first positive electrode and a first negative electrode, wherein a first current that fluctuates at a first frequency flows between the first positive electrode and the first negative electrode; and a second electrode pair having a second positive electrode and a second negative electrode, wherein a second current that fluctuates at a second frequency different from the first frequency flows between the second positive electrode and the second negative electrode; and the device is capable of changing the position of an interference range where the first current and the second current interfere with each other between the first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode.

[0005] A second aspect of the present disclosure is a device comprising: an electrode pad having a first positive electrode and a first negative electrode, each of which has a first electrode pair arranged along a first direction, through which a first current that fluctuates at a first frequency flows between the first positive electrode and the first negative electrode; a second positive electrode and a second negative electrode, each of which has a second electrode pair arranged along a second direction intersecting the first direction, through which a second current that fluctuates at a second frequency different from the first frequency flows between the second positive electrode and the second negative electrode; a first power supply unit that supplies the first current; a second power supply unit that supplies the second current; a first switching unit that switches the first power supply unit to supply the first current to any of the plurality of first electrode pairs; and a second switching unit that switches the second power supply unit to supply the second current to any of the plurality of second electrode pairs.

[0006] A third aspect of the present disclosure is a device comprising: an electrode pad including a first electrode pair having a first positive electrode and a first negative electrode, arranged along a first direction, through which a first current that varies at a first frequency flows between the first positive electrode and the first negative electrode; a second electrode pair having a second positive electrode and a second negative electrode, arranged along a second direction intersecting the first direction, through which a second current that varies at a second frequency different from the first frequency flows between the second positive electrode and the second negative electrode; a first power supply unit that supplies the first current to each of the plurality of first electrode pairs; and a second power supply unit that supplies the second current to each of the plurality of first electrode pairs.

[0007] A fourth aspect of the present disclosure is an apparatus comprising a first electrode group including two or more first electrodes and a second electrode group including two or more second electrodes, and configured to be capable of generating interference waves inside an object in contact with the first electrodes and the second electrodes, wherein at least two first electrodes included in the first electrode group are configured so that a first voltage based on a first signal from a control device that controls at least a part of the operation is applied between the at least two first electrodes, and at least two second electrodes included in the second electrode group are configured so that a second voltage based on a second signal from the control device is applied between the at least two second electrodes, and the first voltage and the second voltage differ in at least one of amplitude and frequency, and the apparatus further comprises an adjustment unit for adjusting a relative positional relationship between at least one of the at least two first electrodes and the at least two second electrodes and a reference portion of the apparatus. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an outline of a beauty device according to a first embodiment. [Figure 2] FIG. 2 is a side view showing an outline of an electrode pad in the beauty device according to the first embodiment. [Figure 3] FIG. 3 is a side view showing an outline of an electrode pad in the beauty device according to the first embodiment. [Figure 4] FIG. 4 is a front view showing an outline of a support section of the beauty device according to the first embodiment. [Figure 5] FIG. 5 is a side view showing an outline of a support section of the beauty device according to the first embodiment. [Figure 6] FIG. 6 is a diagram illustrating the functional configuration of the beauty device according to the first embodiment. [Figure 7] FIG. 7 is a diagram illustrating the operation of the beauty device according to the first embodiment. [Figure 8] FIG. 8 is a diagram illustrating the operation of the beauty device according to the first embodiment. [Figure 9]FIG. 9 is a perspective view showing an outline of a beauty device according to the second embodiment. [Figure 10] FIG. 10 is a side view showing an outline of an electrode pad in a beauty device according to the second embodiment. [Figure 11] FIG. 11 is a perspective view illustrating the internal configuration of an electrode pad in a beauty device according to the second embodiment. [Figure 12] FIG. 12 is a diagram illustrating the functional configuration of the beauty device according to the second embodiment. [Figure 13] FIG. 13 is a perspective view showing an outline of a beauty device according to the third embodiment. [Figure 14] FIG. 14 is a side view showing an outline of an electrode pad in a beauty device according to a third embodiment. [Figure 15] FIG. 15 is a front view illustrating movement of the electrode pads in the beauty device according to the third embodiment. [Figure 16] FIG. 16 is a diagram illustrating the functional configuration of the beauty device according to the third embodiment. [Figure 17] FIG. 17 is a perspective view showing an outline of a beauty device according to the fourth embodiment. [Figure 18] FIG. 18 is a rear view showing an outline of an electrode pad in a beauty device according to a fourth embodiment. [Figure 19] FIG. 19 is an exploded perspective view showing an outline of an electrode pad in a beauty device according to a fourth embodiment. [Figure 20] FIG. 20 is a diagram illustrating a state in which the beauty device according to the fourth embodiment is used. [Figure 21] FIG. 21 is a diagram illustrating the functional configuration of the beauty device according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, each embodiment of the present disclosure will be described with reference to the accompanying drawings. Note that, in the description of the specification and drawings relating to each embodiment, components having substantially the same or corresponding functional configurations may be designated by the same or corresponding reference numerals, and redundant description may be omitted.

[0010] In the directions of parallel, right-angle, orthogonal, horizontal, vertical, up-down, left-right, front-back, etc., deviations are permitted to the extent that they do not impair the effects of the embodiments. The shape of the corners is not limited to right angles and may be rounded. Parallel, right-angle, orthogonal, horizontal, and vertical may include approximately parallel, approximately right-angle, approximately orthogonal, approximately horizontal, and approximately vertical, respectively.

[0011] For example, "substantially parallel" means that even if two lines or two surfaces are not completely parallel to each other, they can be treated as parallel to each other within the range allowed in manufacturing. As with "substantially parallel," "substantially right angle," "substantially perpendicular," "substantially horizontal," and "substantially vertical" are also intended to fall under the respective terms as long as the relative positional relationship between the two lines or two surfaces is within the range allowed in manufacturing.

[0012] First Embodiment

[0013] A beauty device according to a first embodiment will be described. The beauty device according to the first embodiment includes an electrode pad having a first electrode pair and a second electrode pair. The first electrode pair in the electrode pad included in the beauty device according to the first embodiment includes a first positive electrode and a first negative electrode, and a first current that fluctuates at a first frequency flows between the first positive electrode and the first negative electrode. The second electrode pair in the electrode pad included in the beauty device according to the first embodiment includes a second positive electrode and a second negative electrode, and a second current that fluctuates at a second frequency different from the first frequency flows between the second positive electrode and the second negative electrode. The beauty device according to the first embodiment is capable of changing the interference range between the first current and the second current between the first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode.

[0014] The cosmetic device according to the first embodiment includes an electrode pad, a first power supply circuit, a second power supply circuit, a first switching circuit, and a second switching circuit. The electrode pad in the cosmetic device according to the first embodiment includes a first positive electrode and a first negative electrode, and includes a plurality of first electrode pairs, between which a first current varying at a first frequency flows. The electrode pad in the cosmetic device according to the first embodiment includes a second positive electrode and a second negative electrode, and includes a plurality of second electrode pairs, between which a second current varying at a second frequency different from the first frequency flows. The first power supply unit in the cosmetic device according to the first embodiment supplies the first current. The second power supply unit in the cosmetic device according to the first embodiment supplies the second current. The first switching circuit in the cosmetic device according to the first embodiment switches the first current from the first power supply circuit to one of the plurality of first electrode pairs. The second switching circuit in the cosmetic device according to the first embodiment switches the second current from the second power supply circuit to one of the plurality of second electrode pairs.

[0015] Fig. 1 is a perspective view showing an overview of a beauty device 1, which is an example of a beauty device according to Embodiment 1. Details of the beauty device according to Embodiment 1 will be described using Fig. 1.

[0016] For ease of explanation, the drawings include a virtual three-dimensional coordinate system (XYZ Cartesian coordinate system) consisting of mutually orthogonal X, Y, and Z axes (XYZ axes). For example, for a coordinate axis perpendicular to the plane of the drawing, a black circle within a circle indicates that the coordinate axis faces toward the front of the plane of the drawing. A cross within a circle indicates that the coordinate axis faces away from the plane of the drawing.

[0017] However, this coordinate system is defined for the purpose of explanation and does not limit the orientation of the beauty device or the like according to this embodiment.

[0018] In the following drawings, when the beauty device 1 is attached to a user, the X-axis direction is the front-to-back direction of the user, and the Y-axis direction is the left-to-right direction of the user. The Z-axis is the up-to-down direction of the user. Furthermore, when the beauty device 1 is attached to a user, the user is facing in the direction of the X-axis along the X-axis direction.

[0019] A view of an object viewed from the +X side in the opposite direction of the X axis along the X axis is called a front view, and a view of an object viewed along the Y axis is called a side view.

[0020] With the front view as the reference, the X-axis direction is sometimes referred to as the front-to-back direction, the Y-axis direction as the left-to-right direction, and the Z-axis direction as the up-to-down direction. With respect to an object, the +X side may be referred to as the front, the -X side as the back, the +Y side as the right side, the -Y side as the left side, the +Z side as the top, and the -Z side as the bottom.

[0021] The beauty device 1 is a wearable headgear-type beauty device. The beauty device 1 has an EMS (Electrical Muscle Stimulation) function for stimulating muscles by electrical stimulation. The EMS may be an EMS using interference waves (sometimes referred to as interference wave EMS), which will be described later.

[0022] The cosmetic device 1 generates two or more medium-frequency currents (sometimes referred to as carrier waves) with different electrical characteristics on the surface and / or inside the user's body by applying a voltage to each of three or more electrodes electrically connected to at least a part of the user's body (for example, the head, abdomen, etc. Examples of the head include the face, forehead, parietal region, temporal region, and occipital region). Examples of the electrical characteristics of the carrier waves include at least one of voltage (sometimes referred to as amplitude), frequency, and phase.

[0023] When two or more mid-frequency currents with different electrical characteristics are emitted onto the surface and / or inside the body of a user, the two or more mid-frequency currents interfere with each other on the surface and / or inside the body of the user. This generates a current (sometimes referred to as an interference wave) with a frequency lower than the frequencies of the two or more mid-frequency currents. The interference wave electrically stimulates nerves located in the vicinity of the interference wave. This allows the beauty device 1 to stimulate muscles connected to the nerves. The beauty device 1 adjusts the contraction and / or relaxation or elongation of the muscles by controlling the electrical characteristics of the carrier wave.

[0024] A characteristic of the human body is that the lower the frequency of the current flowing through the user's body surface, the more likely the user feels pain. Therefore, when low-frequency current is directly emitted onto the user's body surface and / or into the body via electrodes placed on the user's body surface, it is difficult to apply a large voltage to the electrodes to generate a strong low-frequency current while suppressing the pain felt by the user. This makes it difficult to apply electrical stimulation over a wide area.

[0025] On the other hand, although its principle is not entirely clear, interference wave EMS is said to reduce the user's pain because a medium-frequency current is emitted from electrodes placed on the user's body surface, generating low-frequency interference waves on the user's body surface and / or inside the user's body. For example, by appropriately designing the distance between the electrodes, interference waves can be generated primarily in areas deeper than the user's pain points. This can suppress stimulation of the pain points and reduce pain. In this way, interference wave EMS reduces the user's pain, allowing a large voltage to be applied to the electrodes. As a result, electrical stimulation can be applied over a wide area.

[0026] (carrier wave) As described above, a carrier wave is emitted onto the user's body surface and / or into the user's body by applying a voltage between a pair of electrodes (sometimes referred to as an electrode pair) arranged on the user's body surface. In one embodiment, N (N is an integer of 2 or more) electrodes form N / 2 electrode pairs. In another embodiment, a common electrode exhibiting a reference potential may be used in multiple electrode pairs. For example, M+1 or more electrode pairs may be formed by 2M+1 (M is an integer of 1 or more) electrodes. More specifically, a first voltage is applied between electrode pair X formed by electrode A and electrode C, causing a first carrier wave to flow onto the user's body surface and / or into the user's body, and a second voltage is applied between electrode pair Y formed by electrode B and electrode C, causing a second carrier wave to flow onto the user's body surface and / or into the user's body. As described above, the first carrier wave and the second carrier wave have different electrical characteristics. Similarly, three electrode pairs may be formed by four electrodes.

[0027] The frequency of the voltage (sometimes referred to as the frequency of the carrier wave) is set, for example, to 0.1 kHz or more and 1 MHz or less. As mentioned above, as the frequency of the carrier wave decreases, the user is more likely to feel pain. Therefore, it is preferable that the lower limit of the frequency of the carrier wave is set to 0.5 kHz. In particular, it is believed that the human body does not perceive stimuli with frequencies above 1 kHz. Therefore, the lower limit of the frequency of the carrier wave may be 1 kHz, 3 kHz, or 5 kHz.

[0028] On the other hand, the upper limit of the carrier wave frequency is not particularly limited, but is preferably set to, for example, 100 kHz. This allows the size and cost of the circuit for generating the carrier wave to be reduced. The upper limit of the carrier wave frequency may be 50 kHz, 10 kHz, 7 kHz, 6 kHz, or 5 kHz. The carrier wave frequency is preferably 0.5 kHz or more and 50 kHz or less, and more preferably 1 kHz or more and 10 kHz or more. The carrier wave frequency may be 5 to 6 kHz.

[0029] The magnitude of the voltage (sometimes referred to as the carrier wave amplitude) may be 0.05 V to 100 V peak-to-peak. The carrier wave voltage is preferably an alternating current. By periodically changing the polarity of the carrier wave voltage, the degree of depolarization of muscle cells can be maintained within an appropriate range. As a result, a decrease in the responsiveness of muscle contraction to electrical stimulation can be suppressed.

[0030] The waveform of the voltage (sometimes referred to as the waveform of the carrier wave) may be any shape as long as it has periodicity, and its shape is not particularly limited. Examples of the waveform of the carrier wave include a sine wave and a rectangular wave. Examples of the sine wave include a sine wave, a triangular wave, and a wave simulating these using multiple rectangular waves. Examples of the rectangular wave include a rectangular wave and a trapezoidal wave.

[0031] (Interference wave) The electrical characteristics of the two or more carrier waves are determined based on the frequency and / or amplitude of an interference wave generated on and / or inside the user's body. The interference wave has a frequency corresponding to the frequencies of the two or more carrier waves that generate the interference wave. For example, if a single interference wave is generated based on two carrier waves with different frequencies, the frequency of the interference wave is the absolute value of the difference between the frequencies of the two carrier waves. The interference wave has an amplitude corresponding to the amplitudes of the two or more carrier waves that generate the interference wave. For example, if a single interference wave is generated based on two carrier waves with the same amplitude but different frequencies, the amplitude of the interference wave is the sum of the amplitudes of the two carrier waves.

[0032] The frequency of the interference wave may be between 0.1 Hz and 100 Hz. When the frequency of the interference wave is within the above range, the pain felt by the user is significantly reduced compared to when low-frequency waves of a similar frequency are directly emitted onto the user's body surface and / or body (sometimes referred to as low-frequency EMS). On the other hand, when low-frequency waves exceeding 100 Hz are directly emitted onto the user's body surface and / or body, the degree of pain felt by the user is significantly less than the degree of pain felt by the user when low-frequency waves of several tens of Hz or less are directly emitted onto the user's body surface and / or body. Therefore, when electrical stimulation is applied using a current exceeding 100 Hz, the degree of pain felt by the user is less whether the electrical stimulation is by interference wave EMS or low-frequency EMS, and the difference between interference wave EMS and low-frequency EMS is small.

[0033] The frequency may be 0.1 Hz or more and 10 Hz or less. The upper limit of the above numerical range may be 5 Hz, 4 Hz, 3 Hz, 2.5 Hz, 2 Hz, or 1 Hz. The upper limit of the above numerical range may be 1 Hz. The frequency of the interference wave may be less than 1 Hz. The frequency of the interference wave may be 0.9 Hz or less, 0.8 Hz or less, 0.7 Hz or less, 0.6 Hz or less, 0.5 Hz or less, 0.4 Hz or less, 0.3 Hz or less, 0.2 Hz or less, or 0.1 Hz or less.

[0034] The amplitude of the interference wave may be 0.1V to 200V peak-to-peak.

[0035] 1, in this embodiment, the cosmetic device 1 includes an electrode pad 10, an electrode pad 30, and a support part 50. The support part 50 supports the electrode pad 10 and the electrode pad 30, respectively.

[0036] (Electrode pad 10 and electrode pad 30) Each of the electrode pads 10 and 30 has a plurality of electrodes on the surface facing the user's skin when the cosmetic device 1 is attached to the user, and the electrodes apply electrical stimulation to the user's skin from the electrodes. The plurality of electrodes constitutes an anode and a cathode, and the anode and cathode constitute an electrode pair. In the following explanation, the electrodes are distinguished as anodes and cathodes, but the anodes and cathodes may be interchanged.

[0037] The following describes the configurations of the electrode pad 10 and the electrode pad 30. Since the electrode pad 30 has the same electrode configuration as the electrode pad 10, the electrode pad 10 will be described in detail, and for the electrode pad 30, the description of the electrode pad 10 should be referred to and a detailed description thereof will be omitted.

[0038] 2 and 3 are side views showing an overview of an electrode pad 10 in a beauty device 1, which is an example of a beauty device according to the first embodiment. Fig. 2 is a side view of the electrode pad 10 as seen from the +Y side (right side). Fig. 3 is a side view of the electrode pad 10 as seen from the -Y side (left side).

[0039] The electrode pad 10 includes a housing 11. The housing 11 has a substantially rectangular parallelepiped shape. The electrode pad 10 includes anodes 15p1 to 15p6, cathodes 15m1 to 15m6, anodes 16p1 to 16p6, and cathodes 16m1 to 16m6 on a surface 10A on the +Y side (right side) of the housing 11.

[0040] Anodes 15p1 to 15p6 are arranged side by side at equal intervals along the Z-axis direction on the +X side (front side) of surface 10A. Anodes 15p1 to 15p6 are arranged side by side at equal intervals of 5 millimeters along the Z-axis direction, for example.

[0041] Cathode 15m1 to cathode 15m6 are provided side by side at equal intervals along the Z-axis direction on the −X side (rear side) of surface 10A. Cathode 15m1 to cathode 15m6 are provided side by side at equal intervals of 5 millimeters along the Z-axis direction, for example.

[0042] The position of cathode 15m1 along the Z-axis direction is the same as the position of anode 15p1 along the Z-axis direction. That is, cathode 15m1 is provided at a position symmetrical to anode 15p1 with respect to center line Av, which passes through the center of surface 10A and is parallel to the Z-axis direction. Similarly, cathodes 15m2 to 15m6 are provided at positions symmetrical to anodes 15p2 to 15p6, respectively, with respect to center line Av.

[0043] A current that fluctuates at a predetermined frequency flows between anode 15p1 and cathode 15m1. That is, anode 15p1 and cathode 15m1 constitute electrode pair 15e1. In other words, electrode pair 15e1 includes anode 15p1 and cathode 15m1. Similarly, anode 15p2 and cathode 15m2, anode 15p3 and cathode 15m3, anode 15p4 and cathode 15m4, anode 15p5 and cathode 15m5, and anode 15p6 and cathode 15m6 constitute electrode pairs 15e2, 15e3, 15e4, 15e5, and 15e6, respectively.

[0044] The anodes 16p1 to 16p6 are arranged side by side at equal intervals along the X-axis direction on the +Z side (upper side) of the surface 10A. The anodes 16p1 to 16p6 are arranged side by side at equal intervals of 5 mm along the X-axis direction, for example.

[0045] Cathode 16m1 to cathode 16m6 are provided side by side at equal intervals along the X-axis direction on the -Z side (lower side) of surface 10A. Cathode 16m1 to cathode 16m6 are provided side by side at equal intervals of 5 millimeters along the X-axis direction, for example.

[0046] The position of cathode 16m1 along the X-axis direction is the same as the position of anode 16p1 along the X-axis direction. That is, cathode 16m1 is provided at a position symmetrical to anode 16p1 with respect to center line Ah, which passes through the center of surface 10A and is parallel to the X-axis direction. Similarly, cathodes 16m2 to 16m6 are provided at positions symmetrical to anodes 16p2 to 16p6, respectively, with respect to center line Ah.

[0047] A current that fluctuates at a predetermined frequency flows between the anode 16p1 and the cathode 16m1. That is, the anode 16p1 and the cathode 16m1 constitute an electrode pair 16e1. In other words, the electrode pair 16e1 includes the anode 16p1 and the cathode 16m1. Similarly, the anode 16p2 and the cathode 16m2, the anode 16p3 and the cathode 16m3, the anode 16p4 and the cathode 16m4, the anode 16p5 and the cathode 16m5, and the anode 16p6 and the cathode 16m6 constitute the electrode pairs 16e2, 16e3, 16e4, 16e5, and 16e6, respectively.

[0048] Electrode pairs 15e1 to 15e6 are arranged side by side between electrode pairs 16e1 to 16e6 along the Z-axis direction. Electrode pairs 16e1 to 16e6 are also arranged side by side between electrode pairs 15e1 to 15e6 along the X-axis direction. Therefore, the path connecting the anode and cathode of each of electrode pairs 15e1 to 15e6 intersects with the path connecting the anode and cathode of each of electrode pairs 16e1 to 16e6.

[0049] Furthermore, if electrode pairs 15e1 to 15e6 are an example of multiple first electrode pairs, electrode pairs 16e1 to 16e6 are an example of multiple second electrode pairs, the Z-axis direction is an example of a first direction, and the X-axis direction is an example of a second direction that intersects with the first direction.

[0050] According to this embodiment, the beauty device 1 includes three or more electrode pairs. The beauty device 1 is configured to emit three or more carrier waves using the three or more electrode pairs. The three or more carrier waves are classified into two or more types based on the electrical characteristics of each carrier wave. Therefore, the beauty device 1 can generate interference waves over a wider range than a beauty device that uses two electrode pairs to emit two types of carrier waves with different electrical characteristics.

[0051] The electrode pad 10 includes a cylindrical member 12 on a surface 10B on the −Y side (left side) of the housing 11. The electrode pad 10 also includes a protrusion 13 and a protrusion 14 on the cylindrical member 12.

[0052] The cylindrical member 12 is provided so as to protrude in the opposite direction to the Y axis along the Y axis direction from the surface 10B of the housing 11. The cylindrical member 12 has a cylindrical shape.

[0053] The cylindrical member 12 has a protrusion 13 on its +X side (front side) that protrudes in the X-axis direction along the X-axis. The cylindrical member 12 also has a protrusion 14 on its -X side (rear side) that protrudes in the opposite direction to the X-axis along the X-axis direction. The protrusions 13 and 14 each have a cylindrical shape. The electrode pad 10 is attached to the support part 50 by the protrusions 13 and 14.

[0054] (Support part 50) Fig. 4 is a front view showing an outline of a support unit 50 in a beauty device 1, which is an example of a beauty device according to Embodiment 1. Fig. 5 is a side view showing an outline of a support unit 50 in an example of a beauty device according to Embodiment 1.

[0055] The support portion 50 includes a middle portion 51 , an end portion 52 , and an end portion 53 .

[0056] The intermediate portion 51 connects the end portion 52 and the end portion 53. The intermediate portion 51 has an arc-like shape when viewed from the front.

[0057] The end 52 is provided on the −Y side (left side) of the intermediate portion 51. The end 52 holds the electrode pad 10. The end 53 is provided on the +Y side (right side) of the intermediate portion 51. The end 53 holds the electrode pad 30.

[0058] The following describes the configurations of the end portion 52 and the end portion 53. Since the end portion 53 has the same configuration as the end portion 52, the description of the end portion 52 is to be referred to, and a detailed description of the end portion 53 will be omitted.

[0059] End portion 52 has support members 52a and 52b at the end portion on the -Z side (lower side). Between support members 52a and 52b, there is a notch 52h that is semicircular in side view.

[0060] The support member 52a has a through hole 52ah at its end on the -Z side. The protrusion 13 of the electrode pad 10 is inserted into the through hole 52ah. The support member 52b has a through hole 52bh at its end on the -Z side. The protrusion 14 of the electrode pad 10 is inserted into the through hole 52bh. When the electrode pad 10 is attached to the end 52, the cylindrical member 12 is positioned in the cutout portion 52h.

[0061] By inserting the protrusion 13 into the through hole 52ah and the protrusion 14 into the through hole 52bh and attaching the electrode pad 10 to the support member 52a, the electrode pad 10 becomes rotatable around an axis along the X-axis direction on the support member 52a.

[0062] This allows adjustment of the relative positional relationship between at least one of the multiple electrodes arranged on the electrode pad 10 and a reference site on the beauty device 1. Any site on the beauty device 1 can be set as the reference site. In particular, if the distance between the representative point of each of the multiple electrodes arranged on the electrode pad 10 and the center of rotation of the electrode pad 10 is different, the arrangement of the multiple electrodes relative to the target site may change significantly when the electrode pad is rotated.

[0063] According to this embodiment, the beauty device 1 is configured so that the relative positional relationship between at least one electrode and a reference portion of the beauty device 1 can be adjusted. Any portion of the beauty device 1 can be set as the reference portion. This allows the user to easily adjust or change the position of the area (sometimes referred to as the peak area) on the body surface and / or inside the user where the displacement of the interference wave is greatest. The interference wave may be generated mainly inside the user's body.

[0064] In this embodiment, the above-mentioned relative positional relationship can be adjusted relatively easily by the user. In one embodiment, the support part 50 slidably supports at least one of the electrode pads 10 and 30. In another embodiment, the support part 50 rotatably supports at least one of the electrode pads 10 and 30. According to this embodiment, the beauty device 1 can provide electrical stimulation to a wider range of muscles compared to beauty devices in which the electrode pads are not configured to be slidable or rotatable.

[0065] The nerves connected to each of the multiple types of facial muscles diverge in a tree-like manner from the trigeminal nerve. The trigeminal nerve is located around the ear or cheek. Therefore, when the support part 50 rotatably supports at least one of the electrode pads 10 and 30, the user can stimulate the nerves connected to any of the facial muscles by adjusting the position of the electrode pads 10 and / or 30 so that the center of rotation of the electrode pads 10 and / or 30 is located near the trigeminal nerve and then rotating the electrode pads 10 and / or 30.

[0066] (Functional configuration of beauty device 1) Fig. 6 is a diagram illustrating the functional configuration of the beauty device 1, which is an example of the beauty device according to the first embodiment. In Fig. 6, in order to facilitate understanding of the functional configuration of the beauty device 1, (i) anode 15p1 to anode 15p6, (ii) cathode 15m1 to cathode 15m6, (iii) anode 16p1 to anode 16p6, and (iv) cathode 16m1 to cathode 16m6 in the electrode pad 10 described in relation to Fig. 2 are collectively illustrated as an electrode unit 18.

[0067] 6, in this embodiment, the electrode pad 30 of the cosmetic device 1 includes an electrode portion 38 that corresponds to the electrode portion 18 of the electrode pad 10. The electrode portion 38 is connected to the control circuit 17 via wiring that extends across the support portion 50.

[0068] In this embodiment, an example of the functional configuration of the beauty device 1 will be described using an example in which the beauty device 1 includes an electrode pad 10, a control circuit 17, an electrode unit 18, and a battery 19. However, the beauty device 1 is not limited to this embodiment. In other embodiments, the control circuit 17 may be located anywhere inside the beauty device 1, or a portion of the control circuit 17 may be located outside the beauty device 1, and at least a portion of the functions realized by the control circuit 17 may be realized by a device outside the beauty device 1.

[0069] In this embodiment, the control circuit 17 includes, for example, an arithmetic circuit 17a, a carrier wave generation circuit 17b, a carrier wave generation circuit 17c, and a power supply circuit 17d. The carrier wave generation circuit 17b includes, for example, power supply circuits 17b1 and 17b2, and switching circuits 17b3 and 17b4. The carrier wave generation circuit 17c has a configuration similar to that of the carrier wave generation circuit 17b. Therefore, a detailed description of the carrier wave generation circuit 17c will be omitted in the description related to FIG. 6.

[0070] The arithmetic circuit 17a is, for example, a computer including a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory). The arithmetic circuit 17a executes processing by, for example, reading a program stored in the ROM into the RAM and executing the program using the CPU.

[0071] In the present embodiment, the arithmetic circuit 17a executes various information processes in the beauty device 1. The arithmetic circuit 17a controls, for example, the operation of at least one of the carrier wave generating circuit 17b, the carrier wave generating circuit 17c, and the power supply circuit 17d. The arithmetic circuit 17a generates, for example, a signal (sometimes referred to as a control signal) for controlling the operation of at least one of the carrier wave generating circuit 17b, the carrier wave generating circuit 17c, and the power supply circuit 17d. The arithmetic circuit 17a outputs the signal to a circuit that is to be controlled by the signal.

[0072] Examples of circuits that are controlled by the arithmetic circuit 17a include at least one of the power supply circuit 17b1, the power supply circuit 17b2, the switching circuit 17b3, and the switching circuit 17b4 included in at least one of the carrier wave generating circuit 17b and the carrier wave generating circuit 17c. Another example of a circuit that is controlled by the arithmetic circuit 17a is the power supply circuit 17d.

[0073] In this embodiment, the carrier wave generating circuit 17b generates a voltage to be applied between a pair of electrodes that constitute a part of the electrode unit 18. The carrier wave generating circuit 17b may generate the voltage based on a control signal received from the arithmetic circuit 17a. The above-mentioned carrier wave is generated by applying the above-mentioned voltage to the pair of electrodes. In this embodiment, the carrier wave generating circuit 17b generates two or more voltages to be applied between two or more pairs of electrodes that constitute a part of the electrode unit 18. The above-mentioned two or more carrier waves are generated by applying each of the two or more voltages to each of the two or more pairs of electrodes.

[0074] In this embodiment, the carrier wave generating circuit 17c generates a voltage to be applied between a pair of electrodes that constitute a part of the electrode unit 38. The carrier wave generating circuit 17c may generate the voltage based on a control signal received from the arithmetic circuit 17a. The above-mentioned carrier wave is generated by applying the above-mentioned voltage to the pair of electrodes. In this embodiment, the carrier wave generating circuit 17c generates two or more voltages to be applied between two or more pairs of electrodes that constitute a part of the electrode unit 38. The above-mentioned two or more carrier waves are generated by applying each of the two or more voltages to each of the two or more pairs of electrodes.

[0075] Power supply circuit 17b1 generates voltage V1 to be applied across at least one of electrode pairs 15e1 to 15e5 based on a signal (sometimes referred to as a first control signal) from arithmetic circuit 17a. The first control signal may be a signal for controlling power supply circuit 17b1 to periodically vary the magnitude of voltage V1. The first control signal may be a signal for controlling power supply circuit 17b1 to vary the magnitude of voltage V1 in a sinusoidal manner. Examples of the waveform of the sinusoidally varying voltage include a sine wave, a triangular wave, and a wave simulating these using multiple rectangular waves.

[0076] Power supply circuit 17b2 generates voltage V2 to be applied across at least one of electrode pairs 16e1 to 16e5 based on a signal (sometimes referred to as a second control signal) from arithmetic circuit 17a. The second control signal may be a signal for controlling power supply circuit 17b2 to periodically vary the magnitude of voltage V2. The second control signal may be a signal for controlling power supply circuit 17b2 to vary the magnitude of voltage V2 in a sinusoidal manner. Examples of waveforms of voltages that vary in a sinusoidal manner include sine waves, triangular waves, and waves that imitate these using multiple rectangular waves.

[0077] As described above, the beauty device 1 generates two or more carrier waves with different electrical characteristics. In this embodiment, the power supply circuit 17b1 and the power supply circuit 17b2 generate the voltages V1 and V2 such that, for example, at least one of the amplitude and frequency of the voltages V1 and V2 is different. In one embodiment, the frequency f1 of the voltage V1 is different from the frequency f2 of the voltage V2. In another embodiment, the amplitude A1 of the voltage V1 is different from the amplitude A2 of the voltage V2. In yet another embodiment, the frequency f1 and amplitude A1 of the voltage V1 are different from the frequency f2 and amplitude A2 of the voltage V2.

[0078] As described above, power supply circuit 17b1 generates voltage V1 in accordance with the first control signal. Similarly, power supply circuit 17b2 generates voltage V2 in accordance with the second control signal. For example, arithmetic circuit 17a generates the first control signal and the second control signal so that power supply circuit 17b1 and power supply circuit 17b2 generate voltages that differ in at least one of amplitude and frequency. This allows arithmetic circuit 17a to control the operation of beauty device 1. Details of control of beauty device 1 by arithmetic circuit 17a will be described later.

[0079] In this embodiment, for example, switching circuit 17b3 switches the power supplied from power supply circuit 17b1 to supply it to at least one of electrode pairs 15e1 to 15e5. In this embodiment, switching circuit 17b4 switches the power supplied from power supply circuit 17b2 to supply it to at least one of electrode pairs 16e1 to 16e5.

[0080] In this embodiment, power supply circuit 17d converts power from a power adapter or the like connected to terminal 20 into a voltage used in control circuit 17 and supplies it to each element in control circuit 17. Power supply circuit 17d also controls charging and discharging of battery 19. Furthermore, power supply circuit 17d supplies power from battery 19 to each element in control circuit 17.

[0081] Fig. 7 is a diagram illustrating the operation of the beauty device 1, which is an example of the beauty device according to the first embodiment. The operation of the beauty device 1 will be described using Fig. 7. Fig. 7 illustrates an example in which one electrode pair (electrode pair 15e2) is selected from multiple electrode pairs (electrode pairs 15e1 to 15e6) aligned in the Z direction, and one electrode pair (electrode pair 16e3) is selected from multiple electrode pairs (electrode pairs 16e1 to 16e6) aligned in the X direction.

[0082] Since the operation of the electrode pad 30 is similar to that of the electrode pad 10, the operation of the electrode pad 10 will be described, and a detailed description of the operation of the electrode pad 30 will be omitted.

[0083] Here, a case will be described in which switching circuit 17b3 in carrier wave generating circuit 17b switches so as to supply current I1 to electrode pair 15e2, and switching circuit 17b4 switches so as to supply current I2 to electrode pair 16e3.

[0084] A case will be described in which current I1 is supplied from power supply circuit 17b1 to electrode pair 15e2 and current I2 is supplied from power supply circuit 17b2 to electrode pair 16e3. When current I1 is supplied from power supply circuit 17b1 to electrode pair 15e2 and current I2 is supplied from power supply circuit 17b2 to electrode pair 16e3, interference occurs between current I1 and current I2 in the area where the path of electrode pair 15e2 intersects with the path of electrode pair 16e3. For example, in FIG. 7, the area where the path of electrode pair 15e2 intersects with the path of electrode pair 16e3 is interference area RNG1. When current I1 and current I2 interfere in interference area RNG1, muscles in interference area RNG1 can be stimulated at a frequency that is the difference between the frequency f1 of current I1 and the frequency f2 of current I2.

[0085] The position of the interference range can be changed by changing the electrode pairs connected to the power supply circuits in the switching circuits 17b3 and 17b4.

[0086] Alternatively, current may be supplied to all electrode pairs in each of switching circuits 17b3 and 17b4. Fig. 8 is a diagram illustrating the operation of beauty device 1, which is an example of the beauty device according to the first embodiment. Fig. 8 shows an example in which all electrode pairs are selected from the multiple electrode pairs arranged in the Z direction (electrode pairs 15e1 to 15e6) and all electrode pairs are selected from the multiple electrode pairs arranged in the X direction (electrode pairs 16e1 to 16e6).

[0087] In other words, current I1 may be supplied from power supply circuit 17b1 to each of the plurality of electrode pairs (electrode pairs 15e1 to 15e6), and current I2 may be supplied from power supply circuit 17b2 to each of the plurality of electrode pairs (electrode pairs 16e1 to 16e6).

[0088] 8, by supplying current from the power supply circuit to all electrode pairs, multiple interference ranges can be generated in a matrix. By generating multiple interference ranges, the beauty device 1 can stimulate muscles over a wider range.

[0089] The beauty device according to the first embodiment makes it possible to change the position of the interference range in the interference wave EMS. The beauty device according to the first embodiment makes it possible to change the range of application by changing the position of the interference range. Furthermore, the beauty device according to the first embodiment makes it possible to widen the interference range. The beauty device according to the first embodiment makes it possible to apply the interference wave EMS over a wide range by changing the position of the interference range or widening the interference range.

[0090] In the above example, the power supply circuit 17b1 and the power supply circuit 17b2 are provided, but in the beauty device according to this embodiment, a power supply circuit in which the first power supply circuit and the second power supply circuit are integrated may be used. The same applies to the following embodiments.

[0091] A user may be an example of an object. A target site may be an example of an object. Support unit 50 or a part thereof may be an example of an adjustment unit. At least one of electrode pairs 15e1 to 15e5 may be an example of either a first electrode or a second electrode. At least two of electrode pairs 15e1 to 15e5 may be an example of either a first electrode group or a second electrode group. At least one of electrode pairs 16e1 to 16e5 may be an example of the other of a first electrode or a second electrode. At least two of electrode pairs 16e1 to 16e5 may be an example of the other of a first electrode group or a second electrode group.

[0092] The control circuit 17 may be an example of a control unit or a control device. The arithmetic circuit 17a may be an example of a control device. The carrier wave generation circuit 17b may be an example of a first application unit and / or a second application unit. The power supply circuit 17b1 may be an example of one of the first application unit and the second application unit. The power supply circuit 17b2 may be an example of the other of the first application unit and the second application unit. The switching circuit 17b3 may be an example of one of the first switching unit or the second switching unit. The switching circuit 17b4 may be an example of the other of the first switching unit or the second switching unit. The carrier wave generation circuit 17c may be an example of the first application unit and / or the second application unit. The first application unit may be an example of a first power supply unit. The second application unit may be an example of a second power supply unit. The voltage V1 may be an example of one of the first voltage or the second voltage. The voltage V2 may be an example of the other of the first voltage or the second voltage. The first control signal may be an example of one of the first signal or the second signal. The second control signal may be an example of the other of the first signal or the second signal.

[0093] (Details of beauty device 1 control) As described above, the control circuit 17 controls the operation of the beauty device 1. The arithmetic circuit 17a controls the operation of the carrier wave generating circuit 17b to control the voltage applied to at least two pairs of electrodes included in the electrode unit 18. This controls the electrical characteristics of two or more carrier waves emitted from the electrode unit 18. As a result, the mode of interference waves generated on the body surface and / or inside the body of the user is controlled. Similarly, the arithmetic circuit 17a controls the operation of the carrier wave generating circuit 17b to control the voltage applied to at least two pairs of electrodes included in the electrode unit 38. This controls the electrical characteristics of two or more carrier waves emitted from the electrode unit 38. As a result, the mode of interference waves generated on the body surface and / or inside the body of the user is controlled.

[0094] The inventors have discovered that when an interference wave having a frequency of less than 1 Hz is generated in the user's face, the position of the peak region of the interference wave is perceived as periodically fluctuating on the surface and / or inside the user's body. Regarding this point, in the past, electrical stimulation of muscles using an interference wave of several Hz has rarely been performed, and only attempts have been made to generate an interference wave of about 2.5 Hz in the abdomen for medical purposes. Furthermore, since stimulation is less sensitive in the abdomen than in the face, the phenomenon of the position of the peak region of the interference wave being perceived as periodically fluctuating was unknown.

[0095] Therefore, the inventors repeatedly conducted experiments in which interference waves were generated on the user's face and simulation experiments in which interference waves were generated, and found that even if (i) the amplitude and frequency of the first control signal and the second control signal, and (ii) the arrangement of the multiple electrodes to which voltages V1 and V2 are applied, the position of the peak area of ​​the interference wave varies on the surface and / or inside the user's body.

[0096] The inventors of the present invention have focused on the idea that a new user experience can be provided by setting the frequency of an interference wave to a value lower than a threshold corresponding to the area (sometimes referred to as the target area) that is the target of electrical stimulation by the interference wave, and as a result of extensive research, have devised a new interference wave EMS. The target area is not particularly limited, but examples of target areas include the head and fingers. For example, the head (especially the face) and fingers have keen senses and can perceive positional fluctuations in the peak area of ​​an interference wave with a frequency of about 0.1 to 10 Hz.

[0097] The cosmetic device 1 or the control circuit 17 may have an operation mode in which the frequency of the interference wave is set to less than 2.5 Hz, preferably less than 1 Hz, more preferably less than 0.6 Hz, even more preferably 0.2 Hz to 0.4 Hz, and particularly preferably 0.2 Hz, which can provide a new user experience.

[0098] In one embodiment, the target area of ​​the above operation mode may be the head (particularly the face) or the fingers. In another embodiment, the target area of ​​the above operation mode may be C-tactile fibers, and the application of the above operation mode may be an application related to C-tactile fibers. Examples of applications related to C-tactile fibers include regulating the autonomic nervous system, regulating hormones, and improving immunity.

[0099] For example, the above operation mode and its relationship with C tactile fibers will be explained using an example in which four electrodes (EL1-1, EL1-2, EL2-1, EL2-2) are arranged so that the midpoints of each electrode are located at the vertices of a square. In the above embodiment, when a voltage having a sine wave SQSin1 waveform is applied to EL1-1 and EL1-2 and a voltage having a sine wave SQSin2 waveform is applied to EL2-1 and EL2-2, a peak region of the interference wave is formed near the center of the four electrodes.

[0100] When the distance between the centers of the electrodes is 3 cm, the circumference of the circle passing through the centers of the electrodes is approximately 9.4 cm. In this case, the electric field generated by the interference wave rotates in a direction that rotates, for example, one cycle (360°). For example, when the interference wave frequency is 1.0 Hz, the electric field phase velocity on the circumference is approximately 9.4 cm / s; when the interference wave frequency is 0.5 Hz, the electric field phase velocity on the circumference is approximately 4.7 cm / s; when the interference wave frequency is 0.3 Hz, the electric field phase velocity on the circumference is approximately 3.1 cm / s; and when the interference wave frequency is 0.2 Hz, the electric field phase velocity on the circumference is approximately 1.9 cm / s. Here, C tactile fibers perceive a velocity of 3 to 10 cm / s. Therefore, by setting the frequency of the interference wave to less than 2.5 Hz (preferably less than 1 Hz), an operating mode particularly suitable for electrical stimulation of C tactile fibers is realized.

[0101] The inventors have found that the location of an area where interference waves may occur (sometimes referred to as an interference point) and / or the number of such interference points or the number per unit area mainly depend on the electrode arrangement and / or the frequency f1 of the voltage V1 or the frequency f2 of the voltage V2. Examples of the electrode arrangement include (i) the inter-electrode distance between a pair of electrodes, and (ii) the relative positional relationship between the multiple electrodes and a reference site on the cosmetic device 1, the electrode pad 10, or the electrode pad 30. The reference site can be set at any position.

[0102] The inventors have found that when multiple interference points exist on the surface and / or inside the user's body, the multiple interference waves generated at each interference point have approximately the same frequency but different phases. Furthermore, the inventors have found that in a single group consisting of such multiple interference points, there is a periodicity in the timing or order (sometimes referred to as a transition pattern) at which the displacement of the interference waves at each interference point reaches its maximum. They have found that the transition pattern of the interference points depends primarily on the electrode arrangement and the type of electrical characteristics of the carrier waves emitted from each electrode.

[0103] To facilitate understanding of the transition patterns of interference points, the transition patterns of interference points will be described in detail using an example in which, among four differently positioned electrodes A, B, C, and D, a voltage corresponding to a first control signal is applied to one pair of electrodes, and a voltage corresponding to a second control signal is applied to the other pair of electrodes. Different user experiences can be provided for each transition pattern of interference points.

[0104] In one embodiment, when the transition pattern of the interference points is linear, the user can experience a kneading sensation, a rubbing sensation, or the like due to the linear movement of the stimulation area. A variety of muscle contractions can also occur. In another embodiment, when the transition pattern of the interference points is circular, elliptical, arc-shaped, elliptical arc-shaped, or spiral-shaped, the user can experience a kneading sensation, a rubbing sensation, or the like due to the rotational movement of the stimulation area. A variety of muscle contractions can also occur.

[0105] For example, in a first embodiment in which a voltage V1 of frequency f1 is applied between electrodes A and B, and a voltage V2 of frequency f2 is applied between electrodes C and D, the timing at which the displacement amount of the interference wave at the interference points becomes maximum shifts in the order of interference point P1, interference point P2, interference point P3, and interference point P4. On the other hand, in a second embodiment in which a voltage V2 of frequency f2 is applied between electrodes A and B, and a voltage V1 of frequency f1 is applied between electrodes C and D, the timing at which the displacement amount of the interference wave at the interference points becomes maximum shifts in the order of interference point P4, interference point P3, interference point P2, and interference point P1.

[0106] In the third embodiment, in which a voltage V1 of frequency f1 is applied between electrode A and electrode C, and a voltage V2 of frequency f2 is applied between electrode B and electrode D, a transition pattern different from those in the first and second embodiments can be observed. Similarly, in the fourth embodiment, in which a voltage V1 of frequency f1 is applied between electrode A and electrode D, and a voltage V2 of frequency f2 is applied between electrode B and electrode C, a transition pattern different from those in the first, second, and third embodiments can be observed.

[0107] (Details of beauty device 1 control) In this embodiment, the arithmetic circuit 17a determines the frequency of an interference wave suitable for a target body part by referring to a database in which information indicating a body part is associated with information regarding the frequency of an interference wave to be generated in the body part. Examples of the information regarding the frequency of the interference wave include the range, upper limit, and lower limit of the frequency. The arithmetic circuit 17a determines the respective frequencies of two or more carrier waves for generating the interference wave based on the determined frequency of the interference wave. As described above, for example, the respective frequencies of the two carrier waves are determined so that the absolute value of the difference between the frequencies of the two carrier waves becomes the frequency of the interference wave. The arithmetic circuit 17a generates and outputs signals for generating each carrier wave.

[0108] (Operation mode in which fluctuations in the peak area are perceptible) As described above, when the target area is the face, the arithmetic circuit 17a generates and outputs multiple signals for generating multiple carrier waves so that the frequency of the interference wave is less than 2.5 Hz, preferably less than 1 Hz, more preferably less than 0.6 Hz, even more preferably 0.2 Hz or more and 0.4 Hz, and particularly preferably 0.2 Hz. In this case, the control circuit 17 is preferably configured to be able to generate carrier waves with a resolution of 0.2 Hz or less. The resolution may be 0.1 Hz.

[0109] This allows the user to fully perceive how the position of the area where the interference wave displacement is greatest (sometimes referred to as the peak area) fluctuates within the target area. As a result, a new user experience can be provided. For example, when the frequency of the interference wave exceeds 2.5 Hz, the user feels the stimulation by the EMS as being relatively monotonous. In contrast, when the frequency of the interference wave is less than 2.5 Hz (particularly less than 1 Hz), the user can fully perceive the fluctuation in the position of the peak area.

[0110] (Interference point control) When the calculation circuit 17a receives an instruction to adjust the positions and / or the number of interference points, the calculation circuit 17a may generate and output a signal to change the frequency f1 of the voltage V1 and / or the frequency f2 of the voltage V2. For example, the calculation circuit 17a generates and outputs a signal to increase or decrease the frequency f1 and the frequency f2 while keeping the difference between the frequency f1 and the frequency f2 constant.

[0111] When an instruction to increase the number of interference points is received, the arithmetic circuit 17a generates and outputs, for example, a signal to increase the frequency f1 and the frequency f2. When an instruction to decrease the number of interference points is received, the arithmetic circuit 17a generates and outputs, for example, a signal to decrease the frequency f1 and the frequency f2.

[0112] (Transition pattern control) When the arithmetic circuit 17a receives an instruction to set or change the transition pattern of the interference points, it determines, among the plurality of electrodes, which electrodes constitute an electrode pair to which a voltage V1 of frequency f1 is applied and which electrodes constitute an electrode pair to which a voltage V2 of frequency f2 is applied. The arithmetic circuit 17a generates and outputs a first control signal for applying the voltage V1 of frequency f1 between the electrode pair to be controlled, and a second control signal for applying the voltage V2 of frequency f2 between the electrode pair to be controlled.

[0113] As described above, according to this embodiment, even if (i) the amplitude and frequency of the first control signal and the second control signal, and (ii) the arrangement of the multiple electrodes to which the voltages V1 and V2 are applied, are the same, it is possible to vary the position of the peak region of the interference wave on the body surface and / or inside the body of the user. According to the cosmetic device 1 according to another embodiment, instead of or in addition to the above embodiment, a more diverse user experience can be provided by changing (i) the amplitude and frequency of the first control signal and the second control signal, and / or (ii) the arrangement of the multiple electrodes to which the voltages V1 and V2 are applied.

[0114] For example, the electrode arrangement is changed by the arithmetic circuit 17a generating and outputting a signal for selecting three or more electrodes to which the voltages V1 and V2 are applied from among the plurality of electrodes. For example, in the beauty device 1 configured to be able to physically change the electrode arrangement, the electrode arrangement can be changed by the arithmetic circuit 17a generating and outputting a signal for physically changing the electrode arrangement. As described above, changing the electrode arrangement can change the positions of interference points and / or the number of interference points or the number per unit area.

[0115] (Other features) The arithmetic circuit 17a may determine the frequency of the interference wave so that a relationship between an index indicating the distance between the first and second electrodes for generating the first carrier wave and the third and fourth electrodes for generating the second carrier wave and the frequency of the interference wave satisfies a predetermined relationship. Note that two of the four electrodes may be physically identical, or all four electrodes may be physically different electrodes.

[0116] The total distance L between the first electrode and the second electrode, the second electrode and the third electrode, the third electrode and the fourth electrode, and the fourth electrode and the first electrode is divided by the period T of the interference wave to determine the speed V of the simulated skin care. The speed V is selected from a range of 3 to 20 centimeters per second, with the upper limit being 15 centimeters per second or 10 centimeters per second. A speed of 10 centimeters per second or less is particularly preferable. If the speed V is 10 centimeters per second or less, the upper limit may be 9 centimeters per second or less, 8 centimeters per second or less, 7 centimeters per second or less, 6 centimeters per second or less, 5 centimeters per second or less, 4 centimeters per second or less, or 3 centimeters per second or less.

[0117] The frequencies f1 and f2 are selected, for example, from the range of 1 kHz to 100 kHz, with the upper limit being 90 kHz or less, 80 kHz or less, 70 kHz or less, 60 kHz or less, 50 kHz or less, 40 kHz or less, 30 kHz or less, 20 kHz or less, or 10 kHz or less. A value of 10 kHz or less is particularly preferred. If the frequency is 10 kHz or less, the upper limit may be 9 kHz or less, 8 kHz or less, 7 kHz or less, or 6 kHz or less. A value of 6 kHz or less is particularly preferred. If the frequency is 6 kHz or less, the upper limit may be 5 kHz or less, 4 kHz or less, 3 kHz or less, 2 kHz or less, or 1 kHz or less.

[0118] The first and second electrodes constituting the first electrode pair and the third and fourth electrodes constituting the second electrode pair may be arranged such that a line segment L1 connecting the first and second electrodes intersects with a line segment L2 connecting the third and fourth electrodes, or such that the line segments L1 and L2 do not intersect. When the first, second, third, and fourth electrodes are arranged such that the line segments L1 and L2 do not intersect, the acute angle formed by the line segments L1 and L2 may be selected from the range of 0 to 90 degrees. The upper limit of the acute angle may be 80 degrees, 70 degrees, 60 degrees, 50 degrees, 40 degrees, 30 degrees, 20 degrees, or 10 degrees.

[0119] The lengths of line segment L1 and line segment L2 can be independently selected from the range of 1 cm to 10 cm. The lower limit of the length of each line segment can be 1.5 cm or more, 2 cm or more, 2.5 cm or more, or 3 cm or more. The lower limit of the length of each line segment can be 3.5 cm or more, 4 cm or more, 4.5 cm or more, 5 cm or more, 5.5 cm or more, 6 cm or more, 6.5 cm or more, 7 cm or more, 7.5 cm or more, 8 cm or more, 8.5 cm or more, 9 cm or more, or 9.5 cm or more.

[0120] In relation to the electrode spacing (i.e., the length of line segment L1 and / or line segment L2), current simulations were performed with varying electrode spacing, assuming that four electrodes (EL1-1, EL1-2, EL2-1, and EL2-2) were arranged so that the midpoints of each electrode were located at the vertices of a square. In the simulations, the line segment L1 connecting EL1-1 and EL1-2 intersected with the line segment L2 connecting EL2-1 and EL2-2. A voltage having a sine wave SQSin1 waveform was applied to EL1-1 and EL1-2, and a voltage having a sine wave SQSin2 waveform was applied to EL2-1 and EL2-2. In the simulations, the electrode spacing was set to 2 cm, 3 cm, or 5 cm. The results showed that the smaller the electrode spacing, the greater the proportion of current flowing through the shallower part of the target area.

[0121] Here, the muscles and nerves responsible for muscle contraction are distributed in the surface and depth directions of the target area. Therefore, the electrode spacing in an operation mode for stimulating muscles and / or nerves located in a relatively deep layer of the target area and an operation mode for stimulating a relatively wide area of ​​the target area may be set to be larger than the electrode spacing in an operation mode for stimulating muscles and / or nerves located in a relatively shallow layer of the target area and an operation mode for stimulating a relatively narrow area of ​​the target area. Furthermore, free nerve endings in the skin related to pain sensation are mainly located near the boundary between the epidermis and the dermis. Therefore, the cosmetic device 1 may have an operation mode for reducing the degree of pain by adjusting the electrode spacing.

[0122] (An example of another embodiment) In the present embodiment, the beauty device 1 has been described in detail using an example in which the control circuit 17 includes the switching circuit 17b3 and the switching circuit 17b4. However, the beauty device 1 is not limited to this embodiment. In other embodiments, the control circuit 17 does not need to include at least one of the switching circuit 17b3 and the switching circuit 17b4.

[0123] Second Embodiment 9 is a perspective view showing an overview of a beauty device 2, which is an example of a beauty device according to the second embodiment. The beauty device according to the second embodiment will be described in detail with reference to FIG.

[0124] The beauty device 2 is a wearable headgear-type beauty device. The beauty device 2 outputs electrical stimulation to the skin from electrodes in contact with the cheeks, and performs EMS, which stimulates muscles through electrical stimulation. The beauty device 2 particularly performs interference wave EMS.

[0125] The beauty device 2 includes an electrode pad 110, an electrode pad 130, and a support part 150. The support part 150 has the same configuration as the support part 50 in the beauty device 1, which is an example of the beauty device according to the first embodiment, and therefore, the description of the support part 50 should be referred to, and a detailed description of the support part 150 will be omitted here.

[0126] (Electrode pad 110 and electrode pad 130) When the cosmetic device 2 is attached to a user, each of the electrode pads 110 and 130 has a plurality of electrodes on the surface facing the user's skin, and applies electrical stimulation to the user's skin from the electrodes.

[0127] The following describes the configuration of each of the electrode pad 110 and the electrode pad 130. Since the electrode pad 130 has the same electrode configuration as the electrode pad 110, the electrode pad 110 will be described in detail, and for the electrode pad 130, the description of the electrode pad 110 should be referred to and a detailed description thereof will be omitted.

[0128] Fig. 10 is a side view showing an overview of an electrode pad 110 in a beauty device 2, which is an example of a beauty device according to the second embodiment. Fig. 10 is a side view of the electrode pad 110 as seen from the +Y side (right side).

[0129] The electrode pad 110 includes a housing 111. The housing 111 has a substantially rectangular parallelepiped shape. The electrode pad 110 includes an anode 115p1, a cathode 115m1, anodes 116p1 to 116p6, and cathodes 116m1 to 116m6 on a surface 110A on the +Y side (right side) of the housing 111.

[0130] The anode 115p1 is provided so as to be movable along the Z-axis direction relative to the electrode pad 110. The cathode 115m1 is provided so as to be movable along the Z-axis direction relative to the electrode pad 110.

[0131] This adjusts the relative positional relationship between the anode 115p1 and the reference portion of the cosmetic device 1. Also, it adjusts the relative positional relationship between the cathode 115m1 and the reference portion of the cosmetic device 1. The driving member that moves the anode 115p1 and / or the cathode 115m1 may be an example of an adjustment unit.

[0132] The position along the Z-axis direction of the cathode 115m1 is equal to the position along the Z-axis direction of the anode 115p1.

[0133] A current that fluctuates at a predetermined frequency flows between the anode 115p1 and the cathode 115m1. That is, the anode 115p1 and the cathode 115m1 constitute an electrode pair 115e1. In other words, the electrode pair 115e1 includes the anode 115p1 and the cathode 115m1.

[0134] The anodes 116p1 to 116p6 are arranged side by side at equal intervals along the X-axis direction on the +Z side (upper side) of the surface 110A. The anodes 116p1 to 116p6 are arranged side by side at equal intervals of 5 mm along the X-axis direction, for example.

[0135] Cathode 116m1 to cathode 116m6 are provided side by side at equal intervals along the X-axis direction on the -Z side (lower side) of surface 110A. Cathode 116m1 to cathode 116m6 are provided side by side at equal intervals of 5 millimeters along the X-axis direction, for example.

[0136] The position of the cathode 116m1 along the X-axis direction is the same as the position of the anode 116p1 along the X-axis direction. That is, the cathode 116m1 is provided at a position symmetrical to the anode 116p1 with respect to the center line Bh that passes through the center of the surface 110A and is parallel to the X-axis direction. Similarly, the cathodes 116m2 to 116m6 are provided at positions symmetrical to the anodes 116p2 to 116p6, respectively, with respect to the center line Bh.

[0137] A current that fluctuates at a predetermined frequency flows between the anode 116p1 and the cathode 116m1. That is, the anode 116p1 and the cathode 116m1 constitute an electrode pair 116e1. In other words, the electrode pair 116e1 includes the anode 116p1 and the cathode 116m1. Similarly, the anode 116p2 and the cathode 116m2, the anode 116p3 and the cathode 116m3, the anode 116p4 and the cathode 116m4, the anode 116p5 and the cathode 116m5, and the anode 116p6 and the cathode 116m6 constitute electrode pairs 116e2, 116e3, 116e4, 116e5, and 116e6, respectively.

[0138] A description will be given of a configuration for moving the electrode pair 115e1 relative to the electrode pad 110. Fig. 11 is a perspective view illustrating the internal configuration of the electrode pad 110 in the beauty device 2, which is an example of the beauty device according to the second embodiment.

[0139] The electrode pad 110 includes a motor 121 , a worm gear 122 , and a moving member 123 .

[0140] The motor 121 rotates the worm gear 122. When the worm gear 122 rotates, the moving member 113 moves along the longitudinal direction (Z-axis direction) of the worm gear 122. An anode 115p1 and a cathode 115m1 are attached to both ends of the moving member 113.

[0141] The −Y side of the electrode pad 110 has the same configuration as the electrode pad 10.

[0142] When electrode pair 15e1 is moved, it is desirable to move it so that the skin is stretched by about 10% to 30%. Moving the electrode pair 15e1 so that the skin is stretched by about 10% to 30% is effective for beauty.

[0143] 12 is a diagram illustrating the functional configuration of a beauty device 2, which is an example of a beauty device according to the second embodiment. The functional configuration of the beauty device 2 will be described in detail with reference to FIG.

[0144] The cosmetic device 2 includes, in the electrode pad 110, a control circuit 117, an electrode unit 118, a battery 19, and a motor 121. The anode 115p1, the cathode 115m1, the anodes 116p1 to 116p6, and the cathodes 116m1 to 116m6 of the electrode pad 110 are collectively referred to as the electrode unit 118. The cosmetic device 2 also includes, in the electrode pad 130, an electrode unit 138 that corresponds to the electrode unit 118 of the electrode pad 110. The electrode unit 138 is connected to the control circuit 117 via wiring provided across the support unit 150. The electrode pad 130 also includes a motor 141. The motor 141 is connected to the control circuit 117 via wiring provided across the support unit 150.

[0145] The control circuit 117 includes an arithmetic circuit 117a, a carrier wave generating circuit 117b, a carrier wave generating circuit 117c, a motor driving circuit 124, a motor driving circuit 125, and a power supply circuit 117d.

[0146] The arithmetic circuit 117a has the same configuration as the arithmetic circuit 17a.

[0147] Carrier wave generation circuit 117b generates an electrical signal to be supplied to the electrodes in electrode unit 118. Carrier wave generation circuit 117c generates an electrical signal to be supplied to the electrodes in electrode unit 138. Since carrier wave generation circuit 117c has a similar configuration to carrier wave generation circuit 117b, for details of carrier wave generation circuit 117c, refer to the description of carrier wave generation circuit 117b, and detailed description of carrier wave generation circuit 117c will be omitted here.

[0148] The carrier wave generating circuit 117b has the same configuration as the carrier wave generating circuit 17b, except that the carrier wave generating circuit 117b does not include the switching circuit 17b3.

[0149] The motor drive circuit 124 supplies power for operating the motor 121. The motor drive circuit 125 supplies power for operating the motor 141. The motor drive circuits 124 and 125 are each controlled by the arithmetic circuit 117a.

[0150] The beauty device according to the second embodiment makes it possible to change the position of the interference range in the interference wave EMS. The beauty device according to the second embodiment makes it possible to change the range of application by changing the position of the interference range. Furthermore, the beauty device according to the second embodiment makes it possible to widen the interference range. The beauty device according to the second embodiment makes it possible to apply the interference wave EMS over a wide range by changing the position of the interference range or widening the interference range.

[0151] In the above example, the electrode pair 115e1, which is an electrode pair arranged in the front-to-back direction (X-axis direction), is movable in the up-and-down direction (Z-axis direction), but an electrode pair arranged in the up-and-down direction (Z-axis direction) may also be movable in the front-to-back direction (X-axis direction). In other words, in the beauty device according to the second embodiment, at least one of the first electrode pair and the second electrode pair may be movably provided on the electrode pad.

[0152] Third Embodiment 13 is a perspective view showing an overview of a beauty device 3, which is an example of a beauty device according to the third embodiment. Details of the beauty device according to the third embodiment will be described with reference to FIG.

[0153] The beauty device 3 is a wearable headgear-type beauty device. The beauty device 3 outputs electrical stimulation to the skin from electrodes in contact with the cheeks, and performs EMS, which stimulates muscles through electrical stimulation. The beauty device 3 particularly performs interference wave EMS.

[0154] The cosmetic device 3 includes an electrode pad 210, an electrode pad 230, and a support portion 250.

[0155] (Electrode pad 210 and electrode pad 230) When the cosmetic device 3 is attached to a user, each of the electrode pads 210 and 230 has a plurality of electrodes on the surface facing the user's skin, and applies electrical stimulation to the user's skin from the electrodes.

[0156] The following describes the configuration of each of the electrode pad 210 and the electrode pad 230. Since the electrode pad 230 has the same electrode configuration as the electrode pad 210, the electrode pad 210 will be described in detail, and for the electrode pad 230, the description of the electrode pad 210 should be referred to and a detailed description thereof will be omitted.

[0157] Fig. 14 is a side view showing an outline of the electrode pad 210 in the beauty device 3, which is an example of the beauty device according to the third embodiment. Fig. 14 is a side view of the electrode pad 210 as seen from the +Y side (right side).

[0158] The electrode pad 210 includes a housing 211. The housing 211 has a substantially rectangular parallelepiped shape. The electrode pad 210 includes an anode 215p1 and a cathode 215m1, and an anode 216p1 and a cathode 216m1 on a surface 210A of the housing 211 on the +Y side (right side).

[0159] The anode 215p1 is provided on the +Z side (upper side) and the +X side (front side) of the surface 210A. The cathode 215m1 is provided on the -Z side (lower side) and the -X side (rear side) of the surface 210A. The anode 216p1 is provided on the -Z side (lower side) and the +X side (front side) of the surface 210A. The cathode 216m1 is provided on the +Z side (upper side) and the -X side (rear side) of the surface 210A.

[0160] The anode 215p1, cathode 215m1, anode 216p1, and cathode 116m1 each have a convex curved surface that comes into contact with the skin. Because the anode 215p1, cathode 215m1, anode 216p1, and cathode 116m1 each have a convex curved surface that comes into contact with the skin, resistance to the skin when the electrode pad 210 is moved can be reduced.

[0161] A current that fluctuates at a predetermined frequency flows between the anode 215p1 and the cathode 215m1. That is, the anode 215p1 and the cathode 215m1 constitute an electrode pair 215e1. In other words, the electrode pair 215e1 includes an anode 215p1 and a cathode 215m1. A current that fluctuates at a predetermined frequency flows between the anode 216p1 and the cathode 216m1. That is, the anode 216p1 and the cathode 216m1 constitute an electrode pair 216e1. In other words, the electrode pair 216e1 includes an anode 216p1 and a cathode 216m1.

[0162] (Support part 250) The support portion 250 supports each of the electrode pads 210 and 230. Furthermore, the support portion 250 moves each of the electrode pads 210 and 230 in the up and down directions.

[0163] The support portion 250 includes an intermediate portion 251 , an end portion 252 , an end portion 253 , and a fixing portion 254 .

[0164] Since the intermediate portion 251, the end portion 252, and the end portion 253 have the same configuration as the intermediate portion 51, the end portion 52, and the end portion 53 of the support portion 50, respectively, the description of the support portion 50 should be referred to and the description thereof will be omitted here.

[0165] The fixing part 254 is fixed to the back of the user's head or the like so that the entire support part 250 does not move even if the electrode pads 210 and 230 move up and down. End part 254a and end part 254b of the fixing part 254 are each provided with a motor for moving the electrode pads 210 and 230, respectively.

[0166] A mechanism for vertically moving each of the electrode pads 210 and 230 using the support part 250 will be described. The mechanism for vertically moving the electrode pad 230 is the same as the mechanism for vertically moving the electrode pad 210. Therefore, the electrode pad 210 will be described here, and the description of the electrode pad 210 will be referred to for the electrode pad 230, and a detailed description of the electrode pad 230 will be omitted here.

[0167] FIG. 15 is a front view illustrating movement of the electrode pad 210 in the beauty device 3, which is an example of the beauty device according to the third embodiment.

[0168] Support part 250 includes a disk 255 that is interlocked with a motor built into end part 254a. Disk 255 also includes a protrusion 256 that protrudes in the X-axis direction along the X-axis. Protrusion 256 is inserted into a long hole 257h provided in plate part 257 that connects to end part 252.

[0169] When the disk 255 rotates in the direction of the arrow Ar, the protrusion 256 moves along the elongated hole 257h. When the protrusion 256 moves along the elongated hole 257h, the plate portion 257 moves in the direction of the arrow Az (Z-axis direction, up and down direction). When the plate portion 257 moves in the direction of the arrow Az (Z-axis direction, up and down direction), the electrode pad 210 moves (slides) in the direction of the arrow Az (Z-axis direction, up and down direction).

[0170] This makes it possible to adjust the relative positional relationship between at least one of the multiple electrodes arranged on the electrode pad 210 and the reference part of the cosmetic device 1. The support part 250 or a part thereof may be an example of an adjustment part.

[0171] When moving the electrode pad 210, it is desirable to move it so that the skin is stretched by about 10% to 30%. Moving the electrode pad 210 so that the skin is stretched by about 10% to 30% is effective for cosmetic purposes.

[0172] 16 is a diagram illustrating the functional configuration of a beauty device 3, which is an example of a beauty device according to the third embodiment. The functional configuration of the beauty device 3 will be described with reference to FIG.

[0173] The cosmetic device 3 includes an electrode pad 210, a control circuit 217, an electrode unit 218, and a battery 19. The anode 215p1, the cathode 215m1, the anode 216p1, and the cathode 216m1 of the electrode pad 210 are collectively referred to as the electrode unit 218. The cosmetic device 3 also includes an electrode pad 230, an electrode unit 238 corresponding to the electrode unit 218 of the electrode pad 210. The electrode unit 238 is connected to the control circuit 217 via wiring provided across the support unit 250. The support unit 250 includes a motor 258 for moving the electrode pad 210 and a motor 259 for moving the electrode pad 230.

[0174] The control circuit 217 includes an arithmetic circuit 217a, a carrier wave generating circuit 217b, a carrier wave generating circuit 217c, a motor driving circuit 226, a motor driving circuit 227, and a power supply circuit 17d.

[0175] The arithmetic circuit 217a has the same configuration as the arithmetic circuit 17a.

[0176] Carrier wave generation circuit 217b generates an electric signal to be supplied to the electrodes in electrode section 218. Carrier wave generation circuit 217c generates an electric signal to be supplied to the electrodes in electrode section 238. Since carrier wave generation circuit 217c has a similar configuration to carrier wave generation circuit 217b, for details of carrier wave generation circuit 217c, refer to the description of carrier wave generation circuit 217b, and detailed description of carrier wave generation circuit 217c will be omitted here.

[0177] The carrier wave generating circuit 217b has the same configuration as the carrier wave generating circuit 17b, except that the carrier wave generating circuit 217b does not include the switching circuit 17b3 and the switching circuit 17b4.

[0178] The motor drive circuit 226 supplies power for operating the motor 258. The motor drive circuit 227 supplies power for operating the motor 259. The motor drive circuits 226 and 227 are each controlled by the arithmetic circuit 217a.

[0179] The beauty device according to the third embodiment makes it possible to change the position of the interference range in the interference wave EMS. The beauty device according to the third embodiment can change the range of application by changing the position of the interference range. The beauty device according to the third embodiment makes it possible to apply the interference wave EMS over a wide range by changing the position of the interference range.

[0180] In the above example, the electrode pad 210 can move in the vertical direction (Z-axis direction), but it may also be movable in the front-back direction (X-axis direction). Also, the electrode pad 210 may be rotated around an axis along the Y-axis direction.

[0181] Fourth Embodiment Fig. 17 is a perspective view showing an overview of a beauty device 4, which is an example of a beauty device according to the fourth embodiment. Details of the beauty device according to the fourth embodiment will be described with reference to Fig. 17.

[0182] The beauty device 4 is a mask-type wearable beauty device. The beauty device 4 outputs electrical stimulation to the skin from electrodes in contact with the cheeks, and performs EMS, which stimulates muscles through electrical stimulation. The beauty device 4 particularly performs interference wave EMS.

[0183] The cosmetic device 4 includes an electrode pad 310 and a support portion 350.

[0184] (electrode pad 310) When the cosmetic device 4 is attached to the user, the electrode pad 310 has a plurality of electrodes on the surface facing the user's skin, and applies electrical stimulation to the user's skin from the electrodes.

[0185] The configuration of the electrode pad 310 will be described using Figures 18 and 19. Figure 18 is a rear view showing an overview of the electrode pad 310 in the beauty device 4, which is an example of the beauty device according to the fourth embodiment. Figure 19 is an exploded perspective view showing an overview of the electrode pad 310 in the beauty device 4, which is an example of the beauty device according to the fourth embodiment.

[0186] The electrode pad 310 includes a housing 311. The housing 311 includes an outer housing 311a, an inner housing 311b, and an outer housing 311c. The outer housing 311a has a cylindrical shape. The outer housing 311a has a plurality of grooves 311g on the inner surface of the cylindrical shape. The inner housing 311b is housed inside the outer housing 311a. The inner housing 311b has a columnar shape. The inner housing 311b includes an anode 315p1 and a cathode 315m1, and an anode 316p1 and a cathode 316m1 on a surface 311A ​​on the -X side (rear side). The inner housing 311b includes a tab 311n that is inserted into the groove 311g. The outer housing 311c has a disc-like shape, and the inner housing 311b is housed inside the outer housing 311c.

[0187] A current that fluctuates at a predetermined frequency flows between the anode 315p1 and the cathode 315m1. That is, the anode 315p1 and the cathode 315m1 constitute an electrode pair 315e1. In other words, the electrode pair 315e1 includes an anode 315p1 and a cathode 315m1. A current that fluctuates at a predetermined frequency flows between the anode 316p1 and the cathode 316m1. That is, the anode 316p1 and the cathode 316m1 constitute an electrode pair 316e1. In other words, the electrode pair 316e1 includes an anode 316p1 and a cathode 316m1.

[0188] The inner casing 311b is placed in the through-hole 350g2 of the support part 350. The electrode pad 310 is attached to the support part 350 by sandwiching the support part 350 between a surface 311S on the -X side (rear side) of the outer casing 311a and a surface 311T on the +X side (front side) of the outer casing 311c. The electrode pad 310 is attached to the support part 350 so as to be movable along the through-hole 350g2.

[0189] In addition, the inner housing 311b can be rotated by holding and turning the knob 311k.

[0190] 18, the anode 315p1 and the cathode 315m1 are eccentric upward with respect to the rotation center C of the inner casing 311b. Therefore, the interference range RNG2 of the electrode pad 310 is shifted with respect to the rotation center C. Because the interference range RNG2 of the electrode pad 310 is shifted with respect to the rotation center C, the position of the interference range RNG2 can be changed by rotating the inner casing 311b of the electrode pad 310.

[0191] This allows adjustment of the relative positional relationship between at least one of the electrodes arranged on the electrode pad 310 and the reference part of the cosmetic device 1. The support part 350 may be an example of an adjustment part.

[0192] (Support part 350) The support portion 350 supports the electrode pad 310. The electrode pad 310 is arranged in the support portion 350 so as to be movable through a through hole 350g2.

[0193] The support portion 350 has through holes 350g1 and 350g2, and through holes 350h1 and 350h2. The through holes 350h1 and 350h2 are holes through which the user's ears pass.

[0194] An electrode pad 310 is attached to each of the through holes 350g1 and 350g2. In the example of FIG. 17, the electrode pad 310 is attached to the through hole 350g2. The electrode pad 310 may be attached to the through hole 350g1. Each of the through holes 350g1 and 350g2 is an example of an attachment portion to which the electrode pad 310 is attached. The number of through holes to which the electrode pad 310 is attached is not limited to the two through holes shown as an example in FIG. 17. For example, the support portion 350 may have through holes to which three or more electrode pads 310 are attached. In other words, the support portion 350 may have a plurality of attachment portions (such as the through hole 350g1) to which the electrode pads 310 are attached, each at a different position.

[0195] 20 is a diagram illustrating a state of use of a beauty device 4, which is an example of a beauty device according to the fourth embodiment. The beauty device 4 is attached to the face. The electrode pad 310 can move in the direction of arrow Bz along the through-hole 350g2. Furthermore, each of the electrode pair 316e1 and the electrode pair 316e2 in the electrode pad 310 can rotate in the direction of arrow Br relative to the electrode pad 310.

[0196] Next, a description will be given of the functional configuration of the beauty device 4. Fig. 21 is a diagram illustrating the functional configuration of the beauty device 4, which is an example of a beauty device according to the fourth embodiment.

[0197] The cosmetic device 4 includes an electrode pad 310, a control circuit 317, an electrode unit 318, and a battery 19. The anode 315p1, the cathode 315m1, the anode 316p1, and the cathode 316m1 of the electrode pad 310 are collectively referred to as the electrode unit 318.

[0198] The control circuit 317 includes an arithmetic circuit 317a, a carrier wave generating circuit 317b, and a power supply circuit 317d.

[0199] The arithmetic circuit 317a has the same configuration as the arithmetic circuit 17a.

[0200] The carrier wave generating circuit 317b generates an electrical signal to be supplied to the electrodes of the electrode section 318.

[0201] The carrier wave generating circuit 317b has the same configuration as the carrier wave generating circuit 17b, except that the carrier wave generating circuit 317b does not include the switching circuit 17b3 and the switching circuit 17b4.

[0202] The beauty device according to the fourth embodiment makes it possible to change the position of the interference range in the interference wave EMS. The beauty device according to the fourth embodiment can change the range of application by changing the position of the interference range. The beauty device according to the fourth embodiment makes it possible to apply the interference wave EMS over a wide range by changing the position of the interference range. [Explanation of symbols]

[0203] 1, 2, 3, 4 Beauty equipment 10, 30 electrode pads 15p1, 15p2, 15p3, 15p4, 15p5, 15p6 anode 15m1, 15m2, 15m3, 15m4, 15m5, 15m6 cathode 15e1, 15e2, 15e3, 15e4, 15e5, 15e6 electrode pairs 16p1, 16p2, 16p3, 16p4, 16p5, 16p6 anode 16m1, 16m2, 16m3, 16m4, 16m5, 16m6 cathode 16e1, 16e2, 16e3, 16e4, 16e5, 16e6 electrode pairs 17 Control circuit 17b, 17c Carrier wave generation circuit 17b1, 17b2 Power supply circuit 17b3, 17b4 switching circuit 18, 38 Electrode part 50 Support part 110, 130 Electrode pads 115p1 anode 115m1 cathode 116p1, 116p2, 116p3, 116p4, 116p5, 116p6 anode 116m1, 116m2, 116m3, 116m4, 116m5, 116m6 cathode 116e1, 116e2, 116e3, 116e4, 116e5, 116e6 electrode pairs 117 Control circuit 117b, 117c Carrier wave generating circuit 118, 138 Electrode section 121, 141 motor 122 Worm Gear 123 Moving parts 150 Support part 210, 230 Electrode pads 215p1, 216p1 anode 215m1, 216m1 cathode 215e1, 216e1 electrode pair 217 Control circuit 217b, 217c Carrier wave generation circuit 218, 238 Electrode section 250 Support part 310 Electrode Pads 315p1, 316p1 anode 315m1, 316m1 cathode 315e1, 316e1 electrode pair 317 Control Circuit 317b Carrier wave generation circuit 318 Electrode section 350 Support part

Claims

1. a first electrode pair including a first positive electrode and a first negative electrode, configured so that a first current varying at a first frequency flows between the first positive electrode and the first negative electrode; a second electrode pair including a second positive electrode and a second negative electrode, configured so that a second current varying at a second frequency different from the first frequency flows between the second positive electrode and the second negative electrode; Equipped with a position of an interference range in which the first current and the second current interfere with each other can be changed between the first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode; device.

2. an electrode pad having the first electrode pair and the second electrode pair; a support portion that supports the electrode pad; Further provided with The support portion supports the electrode pad so that the electrode pad can slide or rotate.

10. The device of claim 1.

3. Each of the first electrode pair and the second electrode pair is configured to be rotatable with respect to the electrode pad.

3. The device of claim 2.

4. each of the first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode has a convex curved surface; 4. The device of claim 3.

5. further comprising electrode pads supporting the first electrode pair and the second electrode pair; At least one of the first electrode pair and the second electrode pair is configured to be movable relative to the electrode pad.

10. The device of claim 1.

6. the first electrode pair is movably provided on the electrode pad; A plurality of the second electrode pairs are provided.

6. The device of claim 5.

7. an electrode pad having the first electrode pair and the second electrode pair; a support portion that supports the electrode pad, The support portion has a plurality of attachment portions to which the electrode pads are attached, the attachment portions being located at different positions.

10. The device of claim 1.

8. a plurality of the first electrode pairs and a plurality of the second electrode pairs; a first power supply unit that supplies the first current; a second power supply unit that supplies the second current; a first switching unit that switches the first current from the first power supply unit to be supplied to any one of the plurality of first electrode pairs; a second switching unit that switches the second current from the second power supply unit to be supplied to any one of the plurality of second electrode pairs, 8. An apparatus according to any one of claims 1 to 7.

9. an electrode pad including a first electrode pair arranged in a first direction, the first electrode pair having a first positive electrode and a first negative electrode, and a first current that varies at a first frequency flowing between the first positive electrode and the first negative electrode; and a second electrode pair having a second positive electrode and a second negative electrode, the second current that varies at a second frequency different from the first frequency flowing between the second positive electrode and the second negative electrode, the second electrode pair arranged in a second direction intersecting the first direction, the second electrode pair being arranged between the first electrode pairs; a first power supply unit that supplies the first current; a second power supply unit that supplies the second current; a first switching unit that switches the first current from the first power supply unit to be supplied to any one of the plurality of first electrode pairs; a second switching unit that switches the second current from the second power supply unit to be supplied to any one of the plurality of second electrode pairs; Equipped with device.

10. an electrode pad including a first electrode pair arranged in a first direction, the first electrode pair having a first positive electrode and a first negative electrode, and a first current that varies at a first frequency flowing between the first positive electrode and the first negative electrode; and a second electrode pair having a second positive electrode and a second negative electrode, the second current that varies at a second frequency different from the first frequency flowing between the second positive electrode and the second negative electrode, the second electrode pair arranged in a second direction intersecting the first direction, the second electrode pair being arranged between the first electrode pairs; a first power supply unit that supplies the first current to each of the plurality of first electrode pairs; a second power supply unit that supplies the second current to each of the plurality of first electrode pairs; Equipment comprising:

11. a first electrode group including two or more first electrodes; a second electrode group including two or more second electrodes; Equipped with A device configured to be able to generate an interference wave inside an object that contacts the first electrode and the second electrode, At least two first electrodes included in the first electrode group are configured so that a first voltage based on a first signal from a control device that controls at least a part of the operation of the device is applied between the at least two first electrodes; at least two second electrodes included in the second electrode group are configured so that a second voltage based on a second signal from the control device is applied between the at least two second electrodes; the first voltage and the second voltage differ in at least one of amplitude and frequency; The device comprises: an adjustment unit for adjusting a relative positional relationship between at least one of the at least two first electrodes and the at least two second electrodes and a reference portion of the device; Further provided with device.

12. each of the two or more first electrodes is different from each of the two or more second electrodes; 12. The device of claim 11.

13. a portion of the two or more first electrodes and a portion of the two or more second electrodes are the same; 12. The device of claim 11.

14. a first applying unit that receives the first signal and applies the first voltage to the at least two first electrodes included in the first electrode group; a second applying unit that receives the second signal and applies the second voltage to the at least two second electrodes included in the second electrode group; Further provided with 12. The device of claim 11.

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