JP2023029548A - Cosmetic treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a change in effect of cosmetic treatment when a situation is changed.

SOLUTION: A first electrode 21 is an electrode of a circular ring-shape with an opened center, and a second electrode 22 is an electrode of a circular ring-shape with an opened center, and is concentric to the first electrode 21 and arranged outside the outer periphery of the first electrode 21. A first power supply part 81 applies a high-frequency voltage between the first electrode 21 and the second electrode 22. A third electrode 55 is disposed in a part which a user of a facial appliance 1 grips. A second power supply part 82 applies a DC voltage between an electrode part 20 and the third electrode 55. A resistance measurement part 84 measures a value of resistance between the first electrode 21 and the second electrode 22. A voltage control part 83 controls a high-frequency voltage and a DC voltage in accordance with the measured value of resistance.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a cosmetic treatment device.

Japanese Patent Laid-Open No. 2004-100000 describes a technique of performing cosmetic treatment in which electrodes are brought into contact with a user's face, limbs, or the like, and a high-frequency current is applied to the skin (skin) between the electrodes to warm the skin from the inside.

JP 2016-187732

The effects of cosmetic treatment obtained by applying an electric current to the skin vary depending on individual differences and physical conditions, and when lotions are used, they also vary depending on the type of lotion. The technique of Patent Literature 1 does not consider coping with these situation changes.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce variations in the effect of cosmetic treatment when conditions change.

The present invention comprises an electrode section including a first electrode and a second electrode, a first power supply section for applying a first voltage, which is an AC voltage, between the first and second electrodes, and the first and second electrodes. Provided is a beauty treatment device comprising: a measuring section that measures a resistance value between electrodes; and a control section that controls the first voltage according to the measured resistance value.

The controller may increase the first voltage as the measured resistance value increases.

The controller may increase the frequency of the first voltage as the measured resistance value increases.

In addition, a second voltage is a DC voltage, a pulse voltage, or an AC voltage whose polarity is reversed between a grip portion held by a user, a third electrode provided on the grip portion, and the electrode portion and the third electrode. and a second power supply section for applying voltage, wherein the control section may control the first voltage and the second voltage according to the measured resistance value.

The controller may increase the second voltage as the measured resistance value increases.

Further, the control unit controls such that a first period for applying the first voltage and a second period for applying the second voltage alternately occur, and the greater the measured resistance value, the more the first period. and at least one of the second period may be lengthened.

Further, a columnar portion having a columnar shape with a circular cross section and having a mounting surface on which the electrode portion is attached, and an annular magnetic body having an inner diameter larger than the outer circumference of the columnar portion are fitted into the columnar portion. a stopper provided with a magnet for attracting the magnetic body, the stopper for stopping the magnetic body when the magnetic body is attracted by the magnet; It may be fixed by sandwiching the columnar portion.

Further, the stopper may have a portion whose radial dimension is smaller than the outer periphery of the circular shape of the magnetic body fitted in the columnar portion.

According to the present invention, it is possible to reduce the variation in the effect of cosmetic treatment when the situation changes.

A diagram showing the appearance of the facial device of the embodiment A diagram showing the front, side, and back of the facial massager Enlarged view of the stopper, etc. A diagram showing the functional configuration of a facial device A diagram showing an example of the first control table A diagram showing an example of the second control table A diagram showing an example of the third control table A diagram showing an example of the fourth control table A diagram showing an example of an operation procedure of the facial device 1 in the voltage control process.

[1] Embodiment FIG. 1 shows the appearance of a facial device 1 of an embodiment. FIG. 1(a) shows only the appearance of the facial equipment 1, and FIG. 1(b) shows the facial equipment 1 covered with cotton 70. FIG. FIG. 2 shows the front, side and back of the facial device 1. FIG. 2(a) shows the front surface, FIG. 2(b) shows the side surface, and FIG. 2(c) shows the rear surface.

The facial beauty device 1 is an instrument that mainly performs beauty treatment on a user's face, and is an example of the "beauty treatment apparatus" of the present invention. The facial equipment 1 includes a head portion 10 and a main body 50. - 特許庁The head part 10 is a part that is pressed against the user's skin. The main body 50 is a rod-shaped portion having a first surface 51, two second surfaces 52 and a third surface 53, all of which are elongated surfaces, and is a portion to be gripped by the user. The main body 50 is an example of the "grip portion" of the present invention. The head portion 10 is provided at one end of the main body 50 in the longitudinal direction A1 of the first surface 51 .

In the facial equipment 1, the side to which the first surface 51 faces, that is, the side to which the head part 10 is provided is the front side, the side surface is the side to which the second surface 52 is facing, and the third surface 53 is facing. facing the back. An operation button 54 operated by the user is provided on the first surface 51 .
The operation button 54 may be a touch switch displayed on a liquid crystal panel or a mechanical switch. The operation button 54 accepts an operation to select an operation mode of the facial equipment 1 and an operation to start the operation in the selected operation mode.

In this embodiment, a configuration relating to an operation in a cleansing mode that removes dirt from the skin while applying deep heat to warm the deep layers of the skin will be described. The head section 10 includes an electrode section 20 , a columnar section 30 and a stopper 40 . Both deep heat and stain removal described above are performed by applying an electric current to the skin. The electrode part 20 is a part provided with electrodes to which a voltage is applied to apply a current to the skin in deep-layer heating and dirt removal. Hereinafter, the voltage for deep-layer heating is referred to as "first voltage", and the voltage for stain removal is referred to as "second voltage". The electrode section 20 includes a first electrode 21 and a second electrode 22 .

The first electrode 21 is an electrode with a circular outer circumference, and in this embodiment, is an annular electrode with an opening at the center. The second electrode 22 is an annular electrode with an opening at the center, and is concentric with the first electrode 21 and arranged outside the outer circumference of the first electrode 21 . Due to their shape and arrangement, the distance between the first electrode 21 and the second electrode 22 is constant anywhere on the circumference. Between the first electrode 21 and the second electrode 22, a high-frequency voltage (a voltage indicating a high frequency; also referred to as an RF (Radio Frequency) voltage) is applied as the above-described first voltage.

The columnar portion 30 is a columnar portion having a circular cross section, and is in the shape of a cylinder in this embodiment. The columnar portion 30 has a bottom surface 31 and side surfaces 32 , and the electrode portion 20 is attached to the bottom surface 31 . The bottom surface 31 is an example of the "mounting surface" of the present invention. The columnar portion 30 has a housing that forms an internal space for arranging wiring and the like, and the housing is formed using an electrically insulating material such as plastic, non-metal, or ceramic. As a result, even if a voltage is applied to the electrode section 20, the current does not flow through the housing of the columnar section 30, but the user's skin.

A ring 60 is fitted in the columnar portion 30 . The ring 60 is an annular magnetic body with an inner diameter larger than the outer circumference of the columnar portion. The ring 60 is made of a ferromagnetic material such as iron, cobalt, nickel, their alloys, or ferrite. The stopper 40 is connected to the opposite side of the bottom surface 31 of the columnar portion 30 and is a portion that stops the ring 60 when the ring 60 is fitted into the columnar portion 30 .

The stopper 40 has a magnet portion 41 and a notch portion 42 . The magnet part 41 has four magnets each embedded in the stopper 40 in this embodiment. The bottom surface 31 of the columnar portion 30 is covered with cotton 70 formed into a sheet of cotton fibers as shown in FIG. 1(b). Cotton 70 is an example of the "porous covering" of the present invention. In this way, the cotton 70 covering the bottom surface 31 is sandwiched and fixed between the ring 60 attracted to the magnet portion 41 and the columnar portion 30 (specifically, the side surface 32 thereof).

The stopper 40 has an annular shape, and a notch portion 42 is formed by cutting out a portion of the outer periphery.
FIG. 3 is an enlarged view of the stopper 40 and the like. In FIG. 3, the first electrode 21, the second electrode 22 and the ring 60 are hatched for easy identification. The first electrode 21, the second electrode 22, the columnar portion 30, and the stopper 40 (the circular peripheral portion thereof) are all arranged concentrically around the center point P1.

Also, the ring 60 fitted in the columnar portion 30 is substantially concentric therewith. Assuming that the direction from the center point P1 toward the outer periphery is defined as a radial direction A2, the cutout portion 42 has a smaller radial dimension than the circular outer periphery of the ring 60 of the stopper 40 that is fitted into the columnar portion 30. part. That is, the dimension B1 in the radial direction A2 of the outer periphery of the ring 60>the dimension B2 in the radial direction A2 of the cutout portion 42 of the stopper 40 is satisfied.

By providing the notch 42, the ring 60 to which the cotton 70 is fixed can be pushed from the back side. The columnar portion 30, the stopper 40, and the ring 60 only need to have a shape capable of fixing the cotton 70 in this way. For example, the columnar portion may have a truncated cone shape in which the cross section becomes smaller as it approaches the bottom surface 31 . Also, the stopper may be in the shape of a polygonal plate, or may be in the shape of a circular plate with a radius smaller than the outer circumference of the ring 60 and without a notch. is formed and the ring 60 can be pushed from the back side).

A portion of the fixed cotton 70 covering the bottom surface 31 of the columnar portion 30 serves as a contact portion 71 that contacts the user's skin. The contact portion 71 is a portion to which dirt adheres to the user's skin when the head portion 10 of the facial device 1 operating in the cleansing mode is pressed against the user's skin. In the cleansing mode, the contact portion 71 is impregnated with lotion for cleansing to make it easier to remove dirt.

A third electrode 55 is provided on the third surface 53 of the main body 50 . The third electrode 55 is an elliptical electrode extending from end to end in the longitudinal direction A1 of the third surface 53 . Since the third electrode 55 is provided in such a wide range, the user's hand holding the main body 50 always comes into contact with the third electrode 55 . The aforementioned second voltage (voltage for dirt removal) is applied between the third surface 53 and the electrode portion 20 .

A DC voltage or a pulse voltage is used as the second voltage. A DC voltage is a voltage that is constant in magnitude and direction and that, when applied, causes a DC current to flow. If the direction is constant even if the magnitude is not constant but slightly fluctuates, it may be regarded as a DC voltage. Further, the pulse voltage refers to a voltage obtained by alternately repeating a period in which a DC voltage is applied and a period in which the DC voltage is not applied. A case where a pulse voltage is used as the second voltage will be described below, but a DC voltage may be used instead of the pulse voltage.

FIG. 4 shows the configuration of the electronic circuit of the facial device 1. As shown in FIG. In addition to the electrode section 20 having the first electrode 21 and the second electrode 22 and the third electrode 55, the facial equipment 1 includes a first power supply section 81, a second power supply section 82, a voltage control section 83, and a resistance measurement unit. a control circuit board 80 having a portion 84; The control circuit board 80 is a board on which a circuit for controlling voltage is provided, and is composed of electronic elements (for example, capacitors, coils, IC chips, memories, etc.).

The first power supply section 81 applies a high frequency voltage as a first voltage between the first electrode 21 and the second electrode 22 . The first power supply unit 81 has an oscillation circuit that generates a high-frequency voltage, a booster circuit that boosts the oscillated voltage, and the like, and applies a high-frequency voltage of about 1 [MHz] to 4 [MHz], for example. When the head unit 10 to which the high-frequency voltage is applied by the first power supply unit 81 is pressed against the user's skin, a high-frequency current flows through the skin through the lotion soaked in the cotton 70 .

Since the distance between the first electrode 21 and the second electrode 22 is constant anywhere on the circumference as described above, the distance between the first electrode 21 and the second electrode 22 is uniform. A high frequency current flows. Therefore, it is possible to apply a high-frequency current to the user's skin located between the first electrode 21 and the second electrode 22 in a wide range and evenly. equalize. As a result, the amount of heat generated per unit area of the skin is smaller than when a high-frequency current is passed between spherical electrodes, and the skin tends to locally heat due to the high-frequency current, which has been a problem in the past. The user is prevented from feeling discomfort.

The second power supply unit 82 has an oscillation circuit that generates a pulse voltage, a boost circuit that boosts the oscillated voltage, and the like, and includes the electrode unit 20 (one or both of the first electrode 21 and the second electrode 22) and the third electrode unit 82. A pulse voltage is applied between the electrodes 55 . When the user grips the main body 50 of the facial equipment 1 and presses the head part 10 against the skin, a weak direct current flows into the user's body through the hand touching the third electrode 55 and the lotion soaked in the cotton 70. current flows.

In the cleansing mode, the second power supply section 82 applies a pulse voltage to the electrode section 20 so that the third electrode 55 side has a negative potential. As a result, the skin side has a negative potential with respect to the head portion 10, and so-called ion derivation is performed in which wastes, dirt, etc. that have been negatively charged and attached to the skin are adsorbed to the cotton 70. - 特許庁In the facial equipment 1, deep heating by high-frequency voltage and stain removal by pulse voltage are alternately performed.

The voltage control unit 83 controls the high-frequency voltage applied by the first power supply unit 81 by controlling the first power supply unit 81, and the pulse voltage applied by the second power supply unit 82 by controlling the second power supply unit 82. to control. The voltage control section 83 is an example of the "control section" of the present invention. The voltage control unit 83 performs control such that the first period for applying the high-frequency voltage and the second period for applying the pulse voltage alternate. For example, the voltage control unit 83 performs control so that both the first period and the second period have the same length (for example, about 5 to 15 seconds).

Also, the voltage control section 83 uses the measurement result of the resistance measurement section 84 to control both voltages.
The resistance measuring section 84 measures the resistance value between the first electrode 21 and the second electrode 22 . The resistance measurement unit 84 measures electrical resistance as a resistance value in this embodiment. As shown in FIG. 1B, the resistance measurement unit 84 is in a state in which the cotton 70 is fixed and the lotion is soaked (before the head unit 10 is pressed against the user's skin). A high-frequency voltage applied between the second electrodes 22 causes current to flow through the lotion, so the resistance value of the lotion is measured. When the head unit 10 is pressed against the user's skin, current flows through the user's skin through the lotion. Measure.

This resistance value (electrical resistance) varies depending on the condition of the user's skin, the type of lotion, and the like.
For example, it is known that when a high-frequency current is applied to the skin of a human body, the skin generates heat, and the impedance inside the skin gradually decreases as the temperature of the skin rises. Therefore, as the skin temperature rises, the amount of current flowing between the first electrode 21 and the second electrode 22 increases, and the measured resistance value decreases. The resistance measurement unit 84 measures the resistance value at predetermined time intervals (for example, every 0.5 seconds) and supplies the measured resistance value to the voltage control unit 83 each time.

The voltage control section 83 controls the high frequency voltage and the pulse voltage according to the resistance value thus measured by the resistance measurement section 84 . For example, the voltage control unit 83 increases the high-frequency voltage (increases the amplitude of the high-frequency voltage) as the measured resistance value increases. In order to perform this control, the voltage control unit 83 stores, for example, a first control table that associates resistance value ranges with high-frequency voltages.

FIG. 5 shows an example of the first control table. In the example of FIG. 5, high-frequency voltages (Vrf1<Vrf2<Vrf3) of "Vrf1", "Vrf2" and "Vrf3" are applied to the resistance value ranges of "less than R11", "R11 or more and less than R12" and "R12 or more". are associated. When the measurement result is supplied from the resistance measurement unit 84, the voltage control unit 83 applies the high-frequency voltage associated with the resistance value range including the measurement result in the first control table. As a result, the voltage control unit 83 increases the high-frequency voltage as the resistance value measured as described above increases.

As the resistance value between the first electrode 21 and the second electrode 22 increases, the current flowing through the skin when a high-frequency voltage is applied decreases, making it difficult for the inside of the skin to warm. For example, if the resistance value is less than R11 when lotion α is used and the resistance value is R12 or more when lotion β is used, the latter is less likely to warm the inside of the skin than the former if the high-frequency voltage is the same. Such a difference in how easily the inside of the skin warms up occurs due to individual differences in the skin of each user, and also due to differences in the skin conditions of the same user.

Therefore, by performing the above control (control of the voltage by the voltage control unit 83), compared to the case where this control is not performed, By reducing the difference in the magnitude of the current flowing through the skin, the temperature difference inside the skin (that is, the difference in the deep thermal effect) can be reduced. Also, as the skin temperature rises, the resistance value decreases as described above, so the high frequency voltage also decreases. This also prevents excessive heating of the inside of the skin. In addition, as described above, the resistance measurement unit 84 measures the resistance value of the lotion even before the head unit 10 is pressed against the user's skin. It is possible to reduce the difference in the magnitude of the electric current flowing through the user's skin (especially the difference caused by the difference in the type of lotion) before it is pressed against the user's skin.

Also, the voltage control unit 83 increases the pulse voltage (increases the DC voltage included in the pulse voltage) as the measured resistance value increases. In order to perform this control, the voltage control unit 83 stores, for example, a second control table that associates the range of resistance values with the pulse voltage.
FIG. 6 shows an example of the second control table. In the example of FIG. 6, pulse voltages of "Vp1", "Vp2" and "Vp3"(Vp1<Vp2<Vp3) are applied to the resistance value ranges of "less than R21", "R21 or more and less than R22" and "R22 or more". are associated.

When the measurement result is supplied from the resistance measurement unit 84, the voltage control unit 83 applies the pulse voltage associated with the resistance value range including the measurement result in the second control table. As a result, the voltage control unit 83 increases the pulse voltage as the resistance value measured as described above increases.

The larger the resistance value between the first electrode 21 and the second electrode 22, the smaller the current flowing through the skin when the pulse voltage is applied, and the less dirt etc. adsorbed to the cotton 70 (the ion derivation effect becomes smaller). Become). Therefore, by performing the above-described control, the difference in the magnitude of the electric current flowing through the skin caused by the individual difference of the skin, the difference in the condition of the skin, and the difference in conditions such as the type of lotion is reduced, and the dirt and the like adsorbed to the cotton 70 is reduced. The difference (that is, the difference in ion extraction effect) can be reduced.

Also, the voltage control unit 83 lengthens the first period for applying the high-frequency voltage as the measured resistance value increases. In order to perform this control, the voltage control unit 83 stores, for example, a third control table that associates the range of resistance values with the first period.
FIG. 7 shows an example of the third control table. In the example of FIG. 7, first periods of "Trf1", "Trf2" and "Trf3"(Trf1<Trf2<Trf3 ) are associated.

When the measurement result is supplied from the resistance measurement unit 84, the voltage control unit 83 applies the high-frequency voltage during the first period associated with the range of resistance values including the measurement result in the third control table. . As a result, the voltage control unit 83 lengthens the first period (period for applying the high-frequency voltage) as the resistance value measured as described above increases. In this case, when the inside of the skin is difficult to warm, the first period is lengthened to enhance the deep-layer thermal effect.

For example, when it is difficult to warm the inside of the skin even if the maximum high frequency voltage is applied, the deep thermal effect can be enhanced by lengthening the first period. On the contrary, if the inside of the skin is too warm even if the minimum high frequency voltage is applied, the deep thermal effect can be suppressed by shortening the first period. Also, when the first period is changed, similarly to when the high-frequency voltage is changed, the magnitude of the current flowing through the skin is affected by individual differences in the skin, the condition of the skin, the type of lotion, and other conditions. By reducing the difference, the temperature difference inside the skin (ie, the difference in the deep thermal effect) can be reduced.

Also, the voltage control unit 83 lengthens the second period for applying the pulse voltage as the measured resistance value increases. In order to perform this control, the voltage control unit 83 stores, for example, a fourth control table that associates the range of resistance values with the second period.
FIG. 8 shows an example of the fourth control table. In the example of FIG. 8, the first periods (Tp1<Tp2<Tp3 ) are associated.

When the measurement result is supplied from the resistance measurement unit 84, the voltage control unit 83 applies the pulse voltage during the second period associated with the range of resistance values including the measurement result in the fourth control table. . As a result, the voltage control unit 83 lengthens the second period (the period during which the pulse voltage is applied) as the resistance value measured as described above increases. In this case, the effect of deriving ions is enhanced by lengthening the second period in a situation where it is difficult for dirt or the like to be adsorbed on the cotton 70 .

For example, if dirt or the like is not sufficiently adsorbed to the cotton 70 even when the maximum pulse voltage is applied, the effect of deriving ions can be enhanced by lengthening the second period. In the case of changing the second period, similarly to the case of changing the pulse voltage, the magnitude of the current flowing through the skin may vary depending on the individual differences in the skin, the condition of the skin, the type of lotion, and the like. By reducing the difference, it is possible to reduce the difference in dirt and the like adsorbed to the cotton 70 (that is, the difference in ion derivation effect).

Note that the first to fourth control tables are not limited to those shown in FIGS. 5 to 8. FIG. For example, the range of resistance values may be two, or four or more. Moreover, each of the above controls may be performed using a relational expression between the resistance value, the high frequency voltage, the pulse voltage, the first period, or the second period. In short, any method may be used as long as the higher the resistance value, the higher the high-frequency voltage, the higher the pulse voltage, and the longer the first period or the second period.

The facial beauty device 1 performs voltage control processing for controlling the high-frequency voltage and the pulse voltage based on the above configuration.
FIG. 9 shows an example of the operating procedure of the facial device 1 in the voltage control process. This operation procedure is started when an operation is performed to set the operation mode of the facial equipment 1 to the cleansing mode and start the operation. First, the facial equipment 1 (the first power supply section 81 or the second power supply section 82) starts applying either the high-frequency voltage or the pulse voltage (step S10). Which voltage to start with may be determined in advance, or may be the one that was applied at the previous end.

Next, the facial equipment 1 (resistance measuring unit 84) measures the resistance value between the first electrode 21 and the second electrode 22 (step S11). Subsequently, the facial equipment 1 (voltage control unit 83) determines the high-frequency voltage to be applied based on the measured resistance value (step S12). Next, the facial beauty device 1 (voltage control unit 83) determines the pulse voltage to be applied based on the measured resistance value (step S13). Subsequently, the facial beauty device 1 (voltage control unit 83) determines the first period and the second period based on the measured resistance value (step S14). Note that the operations of steps S12 to S14 may be performed in a different order or in parallel.

Next, the facial beauty device 1 (voltage control unit 83) determines whether or not the measurement interval has passed (step S21), and if it determines that it has passed (YES), returns to step S11 (resistance value measurement). to perform the operation. If the facial beauty device 1 (voltage control unit 83) determines that it has not elapsed (NO), the application period (the first period if the high-frequency voltage is currently being applied, or the first period if the pulse voltage is being applied) It is determined whether or not the second period) has elapsed (step S22).

When the facial beauty device 1 (voltage control unit 83) determines that it has not passed (NO) in step S22, it returns to step S21 (determining whether the measurement interval has elapsed) and performs the operation, and determines that it has passed (YES). If so, the type of voltage to be applied is changed (if high-frequency voltage is currently being applied, it is changed to pulse voltage; if pulse voltage is being applied, it is changed to high-frequency voltage) (step S23). After step S23, the facial beauty device 1 (voltage control unit 83) returns to step S21 (judgment of elapse of the measurement interval) and performs the operation.

In this embodiment, by controlling the high-frequency voltage and the pulse voltage as described above, the difference in the magnitude of the current flowing through the skin caused by the individual differences in the skin, the condition of the skin, the type of lotion, etc., can be eliminated. By making it smaller, the difference in the deep thermal effect and the effect of deriving ions are reduced. As described above, according to the present embodiment, it is possible to reduce fluctuations in the effect of cosmetic treatment (deep thermal effect and ion derivation effect) when the situation changes.

Further, in this embodiment, by alternately applying a high-frequency voltage and a pulse voltage, cleansing is performed by deriving ions while warming the inside of the skin. As described above, the more the inside of the skin is warmed, the more the current flows. Therefore, in the present embodiment, by simultaneously performing deep-layer heating, the effect of deriving ions can be enhanced compared to the case of applying only the pulse voltage.

Further, in this embodiment, the cotton 70 is fixed by attracting the ring 60 which is a magnetic material by the magnet portion 41 provided on the stopper 40 . When the head portion 10 is pressed against the user's skin, the magnetic force generated by the magnet portion 41 passes through the ring 60 and reaches the user's skin. As a result, force is applied to the ions in the blood components, activating the movement of the ions and promoting blood circulation. In the facial device 1, by utilizing the mechanism (the magnet part 41 and the ring 60) for fixing the cotton 70 also to promote blood circulation, compared to the case where they are separate mechanisms,
The device can also be made smaller.

[2] Modifications The embodiment described above is merely an example of implementation of the present invention, and may be modified as follows. In addition, the above-described embodiment and each modified example may be implemented in combination as necessary.

[2-1] Frequency Control In the above embodiment, the voltage control section 83 controls the high frequency voltage, but the frequency of the high frequency voltage may be controlled. In this case, the voltage control unit 83 increases the frequency of the high-frequency voltage as the measured resistance value increases. The voltage control unit 83 may perform this control using a control table such as that described with reference to FIG. 5, or may perform this control using a relational expression between the resistance value and the frequency of the high-frequency voltage.

It is known that the higher the frequency of the high-frequency voltage, the faster the temperature inside the skin rises. Therefore, even if the frequency of the high-frequency voltage is controlled as in this modified example, similar to the case where the high-frequency voltage is controlled in the example of FIG. It is possible to reduce the difference in the magnitude of the current flowing through the skin caused by the difference, reduce the temperature difference inside the skin (that is, the difference in the deep thermal effect), and prevent excessive heating of the inside of the skin. can also be prevented.

[2-2] Target of voltage control In the above-described embodiment, the voltage control unit 83 performs all of the high-frequency voltage control, the pulse voltage control, the first period control, and the second period control. At least one or more controls may be performed. Further, the second power supply unit 82 applies the DC voltage described above instead of the pulse voltage, or applies an AC voltage with the polarity reversed, and the voltage control unit 83 controls these voltages. good too. Also, the control of the frequency of the high-frequency voltage described in the modification may be combined. By controlling at least one of the high-frequency voltage, the frequency of the high-frequency voltage, or the first period, fluctuations in the deep thermal effect can be reduced. By controlling one of the two periods, it is possible to reduce variations in the effect of ion extraction.

[2-3] Target of beauty treatment In the above-described embodiments, a facial device that is a tool for performing beauty treatment on a user's face has been mainly described, but the present invention is not limited to this, and includes, for example, the user's arms, torso, or legs. It may be applied to a beauty treatment device that performs beauty treatment on other parts of the body.

[2-4] Porous covering In the above example, the cotton 70 formed into a sheet of cotton fibers was used as the porous covering and covered on the bottom surface 31 of the columnar part 30, but not limited to this, For example, sheets of other types of fibers such as hemp and silk may be used as the porous covering. in short,
The porous coating can be made of any material as long as it has the softness to cover the bottom surface 31 of the columnar part 30, permeates lotion, and adsorbs dirt and the like when pressed against the skin. A body may be used.

[2-5] Ion introduction In the above embodiment, the pulse voltage was applied so that the second power supply unit 82 led out ions. may In this case, the lotion charged with negative ions adsorbs to the skin and easily permeates. In addition, since the skin is warmed to the inside by deep heat and the cells are activated, the lotion can penetrate more easily.

[2-6] Operation mode In the above embodiment, the facial device 1 operates in the cleansing mode, but is not limited to this. It may be operated in a mode in which only deep heat is performed, a mode in which only dirt removal is performed, or a mode in which only iontophoresis is performed.

[2-7] Direct contact with the skin In the above embodiment, the facial device 1 was used with the bottom surface 31 of the columnar part 30 covered with the cotton 70, but it was used without the cotton 70. may In that case, the facial beauty device 1 is operated, for example, in the above-described deep-layer heat only mode, so that the resistance value is measured while the first electrode and the second electrode are in direct contact with the user's skin, and the measured resistance value is Since a high-frequency voltage is applied in accordance with the condition of the skin, it is possible to reduce fluctuations in the deep thermal effect when conditions such as skin conditions change, as in the embodiment.

[2-8] First Electrode In the above embodiment, the first electrode has an annular shape with an opening at the center, but it may have a disk shape with an opening at the center. Even in that case, since the distance between the first electrode and the second electrode is constant anywhere on the circumference, it is possible to widen the heat-generating area of the user's skin and equalize the stimulation due to the energization.

[2-9] Electrode Section In the above embodiments, the electrode section includes the first electrode and the second electrode that are both ring-shaped, but the present invention is not limited to this. The electrode section may include, for example, polygonal and ring-shaped first and second electrodes, or bar-shaped first and second electrodes arranged in parallel. Regardless of the shape, it is preferable that the distance between the first electrode and the second electrode is the shortest, since it is possible to flow the high-frequency current over a wide range and evenly.

[2-10] Resistance value In the above embodiment, the resistance measurement unit 84 measures the electrical resistance (resistance) as the resistance value between the first electrode 21 and the second electrode 22, but not limited to this, for example, the first A reactance between the electrode 21 and the second electrode 22 may be measured as a resistance value. In short, a value representing the difficulty of current flow between the first electrode 21 and the second electrode 22 should be measured as a resistance value. note that,
A value such as conductance that indicates the ease with which current flows can also be treated as a resistance value because the reciprocal of the value indicates the difficulty with which current flows.

[2-11] Method for measuring resistance value In the above-described embodiment, the resistance measurement unit 84 is measured by the current flowing between the first electrode 21 and the second electrode 22 when a high-frequency voltage is applied. Although the resistance value between the electrodes 22 was measured, the method of measuring the resistance value is not limited to this. For example, the resistance measurement unit 84 measures the resistance value between the first electrode 21 and the second electrode 22 by a current that flows when a measurement voltage (for example, a DC voltage) for measuring the resistance value is applied between the first electrode 21 and the second electrode 22 . A resistance value between the two electrodes 22 may be measured.

In this case, for example, before the first power supply unit 81 applies a high-frequency voltage for deep-layer heating, the resistance measurement unit 84 first applies a voltage for measurement, measures the resistance value, and measures the resistance value according to the measured resistance value. The voltage control unit 83 performs control so that the high-frequency voltage and the pulse voltage are applied at a high frequency, so that the difference in the magnitude of the current flowing through the skin is reduced at the start of the cosmetic treatment compared to when this control is not performed. can be reduced from Alternatively, the resistance measuring section 84 may provide another pair of electrodes on the bottom surface 31 of the columnar section 30 to measure the resistance value between them, or a sensor that outputs a value indicating the electrical resistance to the bottom surface 31 . is provided and its output value is used to measure the resistance value.

In short, the resistance value may be measured by any method as long as it serves as an indicator of how easily current flows in the portion of the user's skin against which the head unit 10 is pressed. When the resistance measuring unit 84 measures the resistance value between the first electrode 21 and the second electrode 22 as in the embodiment, there is no need to provide other electrodes or sensors. Therefore, the device can be miniaturized.

REFERENCE SIGNS LIST 1 facial massager 10 head portion 20 electrode portion 21 first electrode 22 second electrode 30 columnar portion 31 bottom surface 40 stopper 41 magnet portion 42 notch portion , 50...main body, 55...third electrode, 60...ring, 70...cotton.

Claims (6)

an electrode unit comprising a first electrode and a second electrode;
a first power source that applies a first voltage, which is an alternating voltage, between the first and second electrodes;
a measuring unit that measures a resistance value between the first and second electrodes;
and a control unit that controls the first voltage according to the measured resistance value. The beauty treatment apparatus according to claim 1, wherein the controller increases the first voltage as the measured resistance value increases. The beauty treatment apparatus according to claim 1 or 2, wherein the controller increases the frequency of the first voltage as the measured resistance value increases. a grip portion held by the user;
a third electrode provided on the grip;
a second power supply unit that applies a DC voltage, a pulse voltage, or an AC voltage having a polarity reversed with respect to the first voltage as a second voltage between the electrode unit and the third electrode,
The cosmetic treatment apparatus according to any one of claims 1 to 3, wherein the controller controls the first voltage and the second voltage according to the measured resistance value. The beauty treatment apparatus according to claim 4, wherein the controller increases the second voltage as the measured resistance value increases. The controller alternately controls a first period for applying the first voltage and a second period for applying the second voltage, and the greater the measured resistance value, the greater the first period and the second period. The cosmetic treatment apparatus according to claim 4 or 5, wherein at least one of the second periods is lengthened.

Images