JP7839205B2 - Beauty device - Google Patents

Description

This invention relates to a beauty device.

As background technology for applying thermal stimulation to the skin in a handheld beauty device, the beauty device described in Patent Document 1 is known. Paragraph [0073] of Patent Document 1 states, "When the user operates the power switch 15a of the operation unit 15 to turn on the power, and then operates the mode switching switch 15b to select the thermal mode, the control unit 19 enables the start of an energizing state in which radio waves (RF), for example, a sinusoidal alternating current with a frequency of 1 MHz, flows between the pair of electrode units 13 and 14." Paragraph [0074] of Patent Document 1 states, "When the electrode units 13 and 14 are brought into contact with the skin, an energizing state occurs between the electrode units 13 and 14 through the skin, and heat is generated by the action of the high-frequency current flowing through the skin, warming the skin and raising its temperature, thereby applying thermal stimulation to the skin."

Japanese Patent Publication No. 2023-69427

By the way, in the thermal mode, when the electrodes are brought into contact with the skin and a high-frequency current called radio waves is passed through, heat is generated by the dielectric heating effect of the high-frequency current, and the thermal stimulation applied to the skin improves skin metabolism. However, the thermal mode not only provides thermal stimulation, but also causes mild thermal damage to the collagen tissue due to the rise in skin temperature. It should be noted that the skin consists of three layers: the epidermis, dermis, and subcutaneous tissue. Of these, the dermis is the main part of the skin tissue, and its majority is composed of collagen.

In contrast, the beauty device described in Patent Document 1, when the thermal mode is selected, applies thermal stimulation to the skin using a high-frequency current called radio waves. Thus, the technology for applying thermal stimulation to the skin described in Patent Document 1 uses only a high-frequency current called radio waves, and therefore, the healing of mild thermal damage to collagen tissue in thermal mode relies on the user's own self-healing abilities. Consequently, it cannot increase the production of adenosine triphosphate (ATP), an energy molecule that promotes the self-healing of skin tissue. This results in slow self-healing and a reduced ability to create new skin cells in collagen tissue that has suffered mild thermal damage. Therefore, the beauty device described in Patent Document 1 has the problem of not being able to promote the self-healing of collagen tissue that has suffered mild thermal damage through thermal stimulation. As a result, cosmetic effects from wound healing, such as improvement of wrinkles due to the recovery of collagen tissue to a fuller state than before the damage, or improvement of skin elasticity due to the recovery of collagen tissue to a stronger state than before the damage, cannot be expected.

This invention was made in view of the above-mentioned problems, and aims to provide a beauty device that promotes the self-healing of collagen tissue that has been mildly damaged by thermal stimulation when thermal stimulation is applied using radio waves.

The beauty device of the present invention comprises a body, electrodes positioned on the body to come into contact with the skin, and an electrical circuit board connected to the electrodes and generating a predetermined energizing signal based on a DC power supply. The electrical circuit board has an energizing signal generation circuit that generates a signal to be output to the electrodes by adding an ultra-low frequency microcurrent, which is obtained by amplitude modulating a minute current with a frequency in the ultra-low frequency range, to a radio wave with a frequency waveform characteristic in which the frequency fluctuates in a predetermined high frequency range. The energizing signal generation circuit has a radio wave generation unit that generates the radio wave with a frequency waveform characteristic in which the frequency fluctuates in a predetermined high frequency range, an ultra-low frequency microcurrent generation unit that generates the ultra-low frequency microcurrent, which is obtained by amplitude modulating a minute current with a frequency in the ultra-low frequency range, and an energizing signal generation unit that uses the radio wave as a carrier wave and generates an energizing signal to the electrodes to which the ultra-low frequency microcurrent is transmitted with a high frequency range due to the radio wave.

The beauty device according to the present invention enhances the production of ATP, which promotes the self-healing of skin tissue, by using ultra-low frequency microcurrents. When thermal stimulation is applied with radio waves, this enhances the self-healing of collagen tissue that has been mildly damaged by the thermal stimulation. In addition, when thermal stimulation is applied with radio waves, an electrical current (EMS) can be generated to the electrodes that effectively enhances the production of ATP, which plays a role in promoting the self-healing of skin tissue.

This is a perspective view showing the beauty device of Example 1. This is a front view showing the beauty device of Example 1. This is an enlarged front view showing the electrode section of the beauty device of Example 1. This is a block diagram showing the electrical system configuration of the beauty device in Example 1. This is a time chart showing an example of the RF frequency waveform characteristics and EMS characteristics generated by the third energized signal generation circuit.

The embodiments for carrying out the beauty device of the present invention are described below based on Example 1 shown in the drawings.

The beauty device of Example 1 is a handheld device used by the user, and was developed with the aim of improving skin condition. This beauty device has three selectable operating modes: "Clean Mode," "Lift Mode," and "Heat Mode." The beauty device according to the present invention, which applies thermal stimulation to the skin, exhibits its function when "Heat Mode" is selected.

[Overall configuration of the beauty device (Figures 1-3)]
As shown in Figures 1 and 2, the beauty device E comprises a body 10, electrodes 20, a conductive grip 30, a battery power supply 40 (DC power supply), an electrical circuit board 50, a power and mode selection switch 60, and a level switch 70. The X-axis direction is the length direction when the beauty device E is viewed from the front, the Y-axis direction is the length direction when the beauty device E is viewed from the front, and the Z-axis direction is the thickness direction perpendicular to the X and Y axes.

The main body 10 is composed of a front panel 11, which is positioned on the front side of the beauty device E and has a long plate shape with a longer length in the X-axis direction and a shorter length in the Y-axis direction, and a body panel 12, which is positioned on the back side of the beauty device E and has a long container shape corresponding to the front panel 11. The front panel 11 has an electrode setting inclined surface 11a that occupies slightly less than half of the length in the X-axis direction from the top edge of the panel, and a button setting plane 11b that occupies slightly more than half of the length in the X-axis direction from the bottom edge of the panel. The inclination angle of the electrode setting inclined surface 11a in the depth direction relative to the button setting plane 11b is set to about 20°, taking into consideration the ease of use for the user when applying the electrode 20 to the face. The body panel 12 is set to a three-dimensional curved shape with all corners curved, taking into consideration the ease of gripping by the user. The front panel 11 and body panel 12 are resin molded products made from the same resin material. The resin material used is typically EBS resin (a thermoplastic resin composed of acrylonitrile, butadiene, and styrene) or PC resin (polycarbonate resin).

The electrode 20 is positioned on the front panel 11 of the body 10 at the electrode setting inclined surface 11a that comes into contact with the skin. The electrode 20 has an electrode head 20a that protrudes from the circular end face 21b of the electrode base 21, and an electrode shaft portion 20b that is inserted into the electrode through hole 21a of the electrode base 21 and connected to the electrical circuit board 50. The electrode 20 has an electrode end face 20c of the electrode head 20a that has a shape combining a circular plane and a smooth arc end face, which is the contact surface with the skin. In the circular area set on the electrode setting inclined surface 11a, for example, four electrodes (two pairs) are grouped together, for example, two in the X-axis direction and two in the Y-axis direction, and the four electrodes are arranged in a circular arrangement with equal spacing in the circumferential direction. The four electrodes 20 are identified by designating them as the first electrode 20A, the second electrode 20B, the third electrode 20C, and the fourth electrode 20D, as shown in Figure 3. The electrode 20 is formed using a conductive metal material, such as 316 medical-grade stainless steel.

As shown in Figure 3, the electrode base 21 is a shallow, cup-shaped resin molded product that covers and fixes the circular area where the four electrodes 20 and the blue/red LED light unit 22, positioned at the end of the electrode setting inclined surface 11a, are set. The electrode base 21 has a circular end face 21b in which four electrode through holes 21a into which the electrodes 20 are incorporated are formed, and a short cylindrical side surface 21c extending from the outer circumference of the circular end face 21b toward the electrode setting inclined surface 11a. As shown in Figure 3, the electrode base 21 has a transparent resin portion in the circular central area including the blue/red LED light unit 22 that transmits LED light, and an opaque resin portion (or semi-transparent resin portion) in the annular end face area and side area other than the transparent resin portion that blocks the transmission of LED light. The electrode base 21 is a resin molded product, and PETG resin (polyethylene terephthalate resin) or PC resin can be used as the resin material. Furthermore, a cotton ring 23 with an inner diameter longer than the outer diameter of the electrode base 21 is positioned on its outer circumference.

The blue/red LED light unit 22 is configured, for example, with a common light-emitting surface and blue and red chips provided on the back side of the common light-emitting surface. As shown in Figure 3, the common light-emitting surface of the blue/red LED light unit 22 is arranged in multiple (for example, 7 x 2 - 1 = 13) in an X-shape along the cross-shaped gap formed between the opposing inner surfaces of the four electrodes 20 on the electrode setting inclined surface 11a covered by the electrode base 21. This blue/red LED light unit 22 turns off when clean mode is selected, the blue LED lights up when lift mode is selected, and the red LED lights up when heat mode is selected.

The cotton ring 23 is an annular shape surrounding the electrode base 21 and is detachably attached to the electrode setting inclined surface 11a on the outer circumference of the electrode base 21. In clean mode, the cotton ring 23 is used to attach and secure cotton soaked in purified water or ion-exporting lotion. The cotton ring 23 is made of iron material with chrome plating or the like, and is detachably attached by magnetic force to a magnet set on the back side of the electrode setting inclined surface 11a.

The conductive grip 30 is incorporated and positioned at the part of the main body 10 that the user grips, connecting the front panel 11 and the body panel 12. The overall shape of the conductive grip 30 is rectangular, corresponding to the outer circumference of the front panel 11. The cross-sectional shape of the conductive grip 30 is an inverted L-shape, with width extending along the contour of the front panel 11 and depth towards the body panel 12. The conductive grip 30 is constructed by coating a conductive metal with a resin molded product; for example, it is manufactured by chrome plating a resin molded product made of EBS resin.

The battery power supply 40, as shown in Figure 2, is a circuit power supply that provides a DC voltage (for example, 5V) to the electrical circuit board 50. The battery power supply 40 is built into the main body 10, as shown in Figure 2, and uses a rechargeable battery such as a lithium-ion battery or a nickel-metal hydride battery. The beauty device E has a female connector terminal (not shown) on its bottom surface to which a male connector terminal from an external charger is connected.

The electrical circuit board 50 is connected to the electrodes 20 and the conductive grips 30, and is a circuit board that generates a predetermined current supply signal based on the battery power supply 40. As shown in Figure 2, the electrical circuit board 50 is built into the main body 10 together with the battery power supply 40. A detailed explanation of the electrical circuit board 50's configuration will be provided later.

The power and mode selection switch 60 is a combined power switch and mode selection switch, and has a power and mode selection button 61 formed on the front panel 11. This power and mode selection switch 60 functions as a power on/off switch when the power and mode selection button 61 is pressed and held, and as a mode selection switch when the power is on and the button is pressed normally. When a mode is selected by pressing the power and mode selection switch 60, one of the letters "CLEAN," "LIFT," or "HEAT" indicating the selected mode illuminates in white at the lower part of the power and mode selection button 61. The front panel 11 also has a white LED light unit 62 on the back of the position where "CLEAN," "LIFT," or "HEAT" is displayed, and the selected mode is indicated by switching the illuminated position.

The level switch 70 is a switch for selecting the intensity level and has a level button 71 formed on the front panel 11. This level switch 70 allows the user to select an intensity level from multiple levels (e.g., 5 levels) by pressing the level button 71 when the lift mode or heat mode is selected. When an intensity level is selected by operating the level switch 70, a column of circles representing the selected intensity level illuminates in white above the level button 71. The front panel 11 also has a white LED light unit 72 on the back of the area where the circles are displayed, and the intensity level is indicated by switching the number of illuminated LEDs.

[Electrical system configuration of the beauty device (Figures 4 and 5)]
As shown in Figure 4, the electrical system of the beauty device E includes a circuit output system consisting of a first electrode 20A, a second electrode 20B, a third electrode 20C, and a fourth electrode 20D, an electrical circuit board 50 to which the battery power supply 40 is connected, and a circuit input system consisting of a power and mode selection switch 60 and a level switch 70. In addition to the four electrodes 20, the circuit output system also includes a blue/red LED light unit 22, a white LED light unit 62, and a white LED light unit 72, whose on/off state is controlled by an LED operation control circuit (not shown).

The electrical circuit board 50 includes a first power supply signal generation circuit 51 that operates when clean mode is selected, a second power supply signal generation circuit 52 that operates when lift mode is selected, and a third power supply signal generation circuit 53 that operates when heat mode is selected. The third power supply signal generation circuit 53 corresponds to the power supply signal generation circuit described in the claims.

The first current-generating signal generation circuit 51, when the clean mode is selected, has a basic circuit that sets the electrode voltage higher than the conductive grip voltage as the current-generating signal output to the electrode 20 and conductive grip 30 in order to adsorb and remove dirt from the skin by ion extraction.

The second electrical stimulation signal generation circuit 52, when the lift mode is selected, has a basic circuit that generates two output waves in the medium frequency range with a frequency difference as electrical stimulation signals to be output to each of the two pairs of electrodes 20, in order to apply electrical stimulation to the muscles using interference waves and increase the amount of muscle present in the deep layers of the skin.

The third current-conducting signal generation circuit 53, when the heat mode is selected, has a basic circuit that generates radio waves with frequency waveform characteristics whose frequency fluctuates in a predetermined high-frequency range as a current-conducting signal output to the electrode 20 in order to apply thermal stimulation to the skin and improve skin metabolism.

The third energizing signal generation circuit 53 generates an energizing signal to output to the electrode 20. This signal is obtained by adding an ultra-low frequency microcurrent, which is a minute current amplitude-modulated by a frequency in the ultra-low frequency range, to a radio wave with frequency waveform characteristics where the frequency fluctuates in a predetermined high-frequency range. This third energizing signal generation circuit 53 includes an RF generation unit 531 (radio wave generation unit), an EMS generation unit 532 (ultra-low frequency microcurrent generation unit), an energizing signal generation unit 533, an RF voltage setting unit 534 (radio wave voltage setting unit), and an EMS voltage setting unit 535 (ultra-low frequency microcurrent voltage setting unit).

Here, in heat mode, RF (Radio Frequency) is defined as a radio wave with frequency waveform characteristics that fluctuate in the high-frequency range. In heat mode, EMS (Electrical Muscle Stimulation) is defined as an ultra-low frequency microcurrent (ULFLIC) obtained by amplitude-modulating a minute current with a frequency in the ultra-low frequency range.

The RF generation unit 531 generates radio waves with frequency waveform characteristics where the frequency fluctuates within a predetermined high-frequency range. This RF generation unit 531 generates radio waves by repeatedly creating a frequency waveform characteristic that fluctuates between the highest and lowest frequencies in a cycle-based manner, without maintaining a single highest frequency.

As shown in Figure 5(a), the RF generation unit 531 of this embodiment generates radio waves with a frequency waveform characteristic in which the frequency fluctuates, with a minimum frequency of 100 kHz, a maximum frequency of 3 MHz, and a reference frequency of 1 MHz. The RF frequency waveform characteristic has a frequency maintenance section S1, a frequency increase section S2, a frequency decrease section S3, and a frequency return section S4. The frequency maintenance section S1 is the section in which the reference frequency of 1 MHz is maintained. The frequency increase section S2 is the section in which the frequency is increased from the reference frequency to the maximum frequency of 3 MHz. The frequency decrease section S3 is the section in which the frequency is decreased from the maximum frequency of 3 MHz to the minimum frequency of 100 kHz. The frequency return section S4 is the section in which the frequency returns from the minimum frequency of 100 kHz to the reference frequency of 1 MHz.

The EMS generation unit 532 generates an ultra-low frequency microcurrent by amplitude-modulating a minute current with a frequency in the ultra-low frequency range. Here, the EMS generation unit 532 sets the ultra-low frequency range to a frequency within the range of 0.1 Hz to 30 Hz, and the minute current to a current within the range of 1 μA to 500 μA. In this embodiment, the EMS generation unit 532 sets the ultra-low frequency range to 2.5 Hz and the minute current to 100 μA.

The current-conducting signal generation unit 533 uses radio waves as carrier waves and generates a current-conducting signal to the electrodes 20, to which an ultra-low frequency microcurrent is transmitted by the high frequency range of the radio waves. In this embodiment, the current-conducting signal generation unit 533 realizes the output of radio waves (RF) to the two pairs of electrodes 20 by capacitive coupling that blocks the low-frequency current. Capacitive coupling refers to the capacitive coupling in which the DC component is isolated by connecting capacitors in series between the preceding and succeeding stages when amplifying a signal in an electronic circuit.

In this embodiment, the energizing signal generation unit 533 transmits radio waves (RF) and ultra-low frequency microcurrents (EMS) to four electrodes 20A, 20B, 20C, and 20D by resistive coupling through electrode swapping. Electrode swapping is performed multiple times per second, such as 20A+20B+20C-20D-/20A-20B+20C+20D-/20A-20B-20C+20D+/20A+20B-20C-20D+. Taking 20A+20B+20C-20D- as an example, the radio waves (RF) are transmitted from 20D- to 20A+ and from 20C- to 20B+. The ultra-low frequency microcurrents (EMS) are transmitted from 20C- to 20A+ and from 20D- to 20B+.

The RF voltage setting unit 534 sets the voltage of the radio waves (RF) generated by the RF generation unit 531 to a higher voltage as the intensity level selected by the level switch 70 increases. In this embodiment, the RF voltage setting unit 534 sets the RF voltage at level 1 to 88-104 Vpp, at level 2 to 102-125 Vpp, at level 3 to 116-138 Vpp, at level 4 to 130-151 Vpp, and at level 5 to 143-188 Vpp.

The EMS voltage setting unit 535 sets the voltage of the ultra-low frequency microcurrent (EMS) generated by the EMS generation unit 532 to a higher voltage as the intensity level selected by the level switch 70 increases. In this embodiment, the EMS voltage setting unit 535 sets the EMS voltage at level 1 to 25Vpp, at level 2 to 26Vpp, at level 3 to 27Vpp, at level 4 to 28Vpp, and at level 5 to 29Vpp.

[How to use the beauty device]
When a user wants to remove dirt from their skin by selecting Clean Mode, they cover the electrodes 20 and electrode base 21 of the beauty device E with cotton soaked in purified water or ion-exporting lotion. The user then uses the cotton ring 23 to magnetically fix the outer edge of the cotton to the electrode setting inclined surface 11a of the front panel 11. The user then presses and holds the power and mode selection button 61, which turns on the power and simultaneously selects Clean Mode as the initial mode. The user can confirm that Clean Mode has been selected by the "CLEAN" light illuminating below the power and mode selection button 61. The user then holds the beauty device E and presses the cotton covering the electrode end face 20c of the electrode 20 against the area of the face or other part of the skin they want to clean, and the dirt on the skin in that area is removed.

When a user wants to apply electrical stimulation to their facial muscles by selecting Lift Mode, they can switch the mode selection from Clean Mode to Lift Mode by pressing the power and mode selection button 61 of the beauty device E as usual while Clean Mode is selected. Upon pressing the button, the user can confirm the switch to Lift Mode by seeing the illuminated text below the power and mode selection button 61 change from "CLEAN" to "LIFT". Then, while holding the beauty device E, the user presses the electrode end face 20c of the electrode 20 against the area of the face they want to lift, applying electrical stimulation to the muscles in that area.

When a user wants to apply thermal stimulation to their skin by selecting the heat mode, they can switch the mode selection from lift mode to heat mode by pressing the power and mode selection button 61 of the beauty device E while it is in lift mode. Simultaneously, the text displayed below the power and mode selection button 61 changes from "LIFT" to "HEAT," confirming the switch to heat mode. Then, while holding the beauty device E, the user presses the electrode end face 20c of the electrode 20 against the area of the face where they want to improve wrinkles or skin elasticity, applying thermal stimulation to the skin in that area.

When the user wants to increase the electrical stimulation applied to the muscles while in lift mode, or when they want to increase the thermal stimulation applied to the skin while in heat mode, they use the level button 71 on the level switch 70. Pressing the level button 71, located above the power and mode selection button 61, selects level 2 (one level up from level 1, the initial intensity level) with a single press. Pressing the button twice selects level 3 (one level up from level 2), and so on, increasing the intensity level up to a maximum of five levels depending on the number of presses. The user can confirm the selected intensity level by the number of circles (〇) illuminated by the white LED light unit 72 above the level button 71, corresponding to the currently selected intensity level. To return to level 1, when at level 5, pressing the level button 71 returns the device to level 1 (the initial intensity level).

[Self-healing promotion effect of collagen tissue through heat mode]
Conventionally, a known circuit for generating an electrical signal to apply thermal stimulation to the skin is one that simply applies a high-frequency current called radio waves by bringing electrodes into contact with the skin. When applying thermal stimulation to the skin using a beauty device equipped with a conventional circuit, applying a high-frequency current called radio waves generates heat through the dielectric heating effect of the high-frequency current, which provides thermal stimulation to the skin and improves skin metabolism. Thus, conventional technology only applies a high-frequency current called radio waves, so when heat is generated, not only is thermal stimulation applied, but the rise in skin temperature also causes mild thermal damage to the collagen tissue that makes up the dermis. This mild thermal damage is slowly repaired according to the user's self-healing ability, and it takes time for the collagen tissue to recover to its original state.

In contrast, the third energizing signal generation circuit 53, when the heat mode is selected, employs a configuration that generates an energizing signal output to the electrode 20 by adding an ultra-low frequency microcurrent (EMS), which is obtained by amplitude-modulating a minute current with a frequency in the ultra-low frequency range, to a radio wave (RF) with frequency waveform characteristics where the frequency fluctuates in a predetermined high-frequency range.

Therefore, when the heat mode is selected, the beauty device E applies radio waves (RF) generated by the third current signal generation circuit 53 to the user's skin area where the electrode 20 is pressed. As a result, heat is generated in the user's skin area due to the dielectric heating effect of the high-frequency current from the electrode 20, providing a thermal stimulus to the user's skin area where the electrode 20 is pressed, thereby improving skin metabolism.

In addition, when the heat mode is selected, the beauty device E applies an ultra-low frequency microcurrent (EMS) generated by the third electrical signal generation circuit 53 to the user's skin area where the electrode 20 is pressed. Therefore, the user's skin area experiences increased production of ATP, an energy molecule that promotes self-healing of skin tissue, in response to mild thermal damage caused by the radio waves applied from the electrode 20. It is known that ATP can be efficiently generated by applying a weak current with a frequency close to that of the heartbeat (ultra-low frequency range).

Thus, by selecting the heat mode, beauty device E enhances the production of ATP, which plays a role in promoting the self-healing of skin tissue, through ultra-low frequency microcurrent (EMS). Furthermore, in heat mode, beauty device E, with its enhanced ATP production, can simultaneously apply ultra-low frequency microcurrent (EMS) when providing thermal stimulation with radio waves, thereby promoting the self-healing of collagen tissue that has received mild thermal damage from the thermal stimulation.

[Effects of beauty device E]
(1) The beauty device E comprises a main body 10, electrodes 20 positioned on the main body 10 to come into contact with the skin, and an electrical circuit board 50 connected to the electrodes 20 and generating a predetermined energizing signal based on a DC power supply. The electrical circuit board 50 has an energizing signal generation circuit (third energizing signal generation circuit 53) that generates an energizing signal to be output to the electrodes 20 by adding an ultra-low frequency microcurrent, which is obtained by amplitude modulating a minute current with a frequency in the ultra-low frequency range, to a radio wave with frequency waveform characteristics in which the frequency fluctuates in a predetermined high frequency range.
This invention promotes the self-healing of collagen tissue that has suffered mild thermal damage due to the thermal stimulation when thermal stimulation is applied using radio waves. As a result, beauty device E can be expected to provide cosmetic effects through wound healing, such as the recovery of collagen tissue to be plumper than before damage or to collagen tissue to be stronger than before damage, and can meet user demands for wrinkle reduction and improved skin elasticity.

(2) The current-conducting signal generation circuit (third current-conducting signal generation circuit 53) includes a radio wave generation unit (RF generation unit 531) that generates radio waves with frequency waveform characteristics in which the frequency fluctuates in a predetermined high-frequency range, an ultra-low-frequency microcurrent generation unit (EMS generation unit 532) that generates an ultra-low-frequency microcurrent by amplitude-modulating a minute current with a frequency in the ultra-low-frequency range, and a current-conducting signal generation unit 533 that uses a radio wave as a carrier wave and generates a current-conducting signal to the electrode 20 to which an ultra-low-frequency microcurrent is transmitted by a high-frequency range frequency of the radio wave.
This invention enables the generation of an electrical current signal to electrode 20 that effectively enhances the production of ATP, which plays a role in promoting the self-healing of skin tissue, by applying thermal stimulation with radio waves using ultra-low frequency microcurrent (EMS).

(3) The radio wave generation unit (RF generation unit 531) generates radio waves by repeatedly creating a frequency waveform characteristic in a cycle unit that fluctuates between the highest frequency and the lowest frequency without maintaining the highest frequency, as a frequency waveform characteristic in a predetermined high-frequency range in which the frequency fluctuates.
This invention reduces the power consumption of the battery power supply 40 by not maintaining the highest frequency while effectively providing thermal stimulation to the skin through a wide frequency fluctuation range.

(4) The ultra-low frequency microcurrent generation unit (EMS generation unit 532) sets the frequency in the ultra-low frequency range to a frequency that falls within the range of 0.1 Hz to 30 Hz.
This invention effectively enhances the production of ATP, which plays a role in promoting the self-healing of skin tissue, when electrical stimulation is applied to the skin by adding ultra-low frequency microcurrent (EMS) to radio waves (RF). For example, experiments have confirmed that ATP production decreases when the frequency of the ultra-low frequency microcurrent (EMS) exceeds 30 Hz. It is more preferable to set the ultra-low frequency range to a frequency that falls within the range of 0.5 Hz to 4.5 Hz (2.5 Hz in this embodiment) within the frequency range of 0.1 Hz to 30 Hz.

(5) The ultra-low frequency microcurrent generation unit (EMS generation unit 532) sets the microcurrent to a current that falls within the range of 1 μA to 500 μA.
This invention effectively enhances the production of ATP, which plays a role in promoting the self-healing of skin tissue, when electrical stimulation is applied to the skin by adding ultra-low frequency microcurrent (EMS) to radio waves (RF). For example, experiments have confirmed that ATP production decreases when the microcurrent exceeds 500 μA. It is more preferable to set the microcurrent to a microcurrent within the range of 50 μA to 150 μA (100 μA in this embodiment), which is within the current range of 1 μA to 500 μA.

(6) The main body 10 is equipped with a level switch 70 for selecting multiple intensity levels. The energizing signal generation circuit (third energizing signal generation circuit 53) includes a radio wave voltage setting unit (RF voltage setting unit 534) that sets the voltage of the radio waves generated by the RF generation unit 531 to a higher voltage as the intensity level selected by the level switch 70 increases, and an ultra-low frequency microcurrent voltage setting unit (EMS voltage setting unit 535) that sets the voltage of the ultra-low frequency microcurrent generated by the EMS generation unit 532 to a higher voltage as the intensity level selected by the level switch 70 increases.
This invention allows for the selection of intensity levels from multiple stages when applying thermal stimulation using radio waves, thereby accommodating the diverse thermal stimulation intensity requirements of various users, which vary from person to person.

The beauty device E of Example 1 has been described above with reference to the drawings. However, the specific configuration of the beauty device of the present invention is not limited to Example 1, and changes or additions to the design are permitted as long as they do not depart from the gist of the invention as described in each claim of the patent.

In Example 1, the radio wave generation unit (RF generation unit 531) was shown to generate radio waves with frequency waveform characteristics where the frequency fluctuates in a predetermined high-frequency range. However, the radio wave generation unit is not limited to a configuration that generates only radio waves (RF). For example, the radio wave generation unit may generate radio waves (RF) with an amplitude-modulated current, which is amplitude-modulated by a frequency in the ultra-low-frequency range, added to the radio waves (RF).

Example 1 shows an example in which an ultra-low frequency microcurrent generation unit (EMS generation unit 532) generates an ultra-low frequency microcurrent by amplitude modulating a minute current with a frequency in the ultra-low frequency range. However, the ultra-low frequency microcurrent generation unit is not limited to a configuration that generates only ultra-low frequency microcurrents (EMS). For example, the ultra-low frequency microcurrent generation unit may also generate an example in which an amplitude-modulated current, which is amplitude-modulated with a frequency in the ultra-low frequency range, is added to the ultra-low frequency microcurrent (EMS).

Example 1 shows an example where the radio wave voltage setting unit (RF voltage setting unit 534) and the ultra-low frequency microcurrent voltage setting unit (EMS voltage setting unit 535) are configured to allow selection of five levels for the generated radio wave (RF) and ultra-low frequency microcurrent (EMS) voltage values. However, these voltage setting units are not limited to the example of five-level selection. For example, these voltage setting units may be configured to have only one voltage value for both the radio wave (RF) and ultra-low frequency microcurrent (EMS), and to have a fixed level setting of only one level. Furthermore, these voltage setting units may be configured to allow selection of multiple levels other than five.

Example 1 shows an example of a beauty device E having user-selectable "Clean Mode," "Lift Mode," and "Heat Mode." However, the beauty device is not limited to having three modes. For example, the beauty device may have a single function, "Heat Mode." The beauty device may have two modes, "Heat Mode" and one other mode. The beauty device may have four or more modes, including "Heat Mode." Furthermore, if the beauty device has multiple modes, as long as it has at least "Heat Mode" or an operating mode equivalent to "Heat Mode," the other modes are not limited to "Clean Mode" and "Lift Mode."

E. Beauty device 10 Body 20 Electrode 30 Conductive grip 40 Battery power supply (DC power supply)
50 Electrical circuit board 53 Third power supply signal generation circuit (power supply signal generation circuit)
60 Power & Mode Selection Switch 70 Level Switch

Claims (5)

A beauty device comprising a torso body, electrodes positioned on the torso body to come into contact with the skin, and an electrical circuit board connected to the electrodes to generate a predetermined current signal based on a DC power supply,
The aforementioned electrical circuit board has a current-conducting signal generation circuit that generates a signal to be output to the electrodes by adding an ultra-low frequency microcurrent, which is obtained by amplitude-modulating a minute current with a frequency in the ultra-low frequency range, to a radio wave with frequency waveform characteristics whose frequency fluctuates in a predetermined high-frequency range .
The aforementioned power supply signal generation circuit is
A radio wave generation unit that generates radio waves having frequency waveform characteristics in which the frequency fluctuates in a predetermined high-frequency range,
A very low-frequency microcurrent generation unit that generates the very low-frequency microcurrent by amplitude modulating a minute current with a frequency in the very low-frequency range,
A beauty device characterized by having: a current supply signal generation unit that uses the radio wave as a carrier wave and generates an electrical supply signal to the electrode to which the ultra-low frequency microcurrent is transmitted by the high frequency range of the radio wave . In the beauty device described in claim 1 ,
The radio wave generation unit is characterized in that it generates radio waves by repeatedly producing a frequency waveform characteristic in a cycle unit that fluctuates between the highest and lowest frequencies without maintaining the highest frequency, as a frequency waveform characteristic in a predetermined high-frequency range in which the frequency fluctuates. In the beauty device described in claim 1 ,
The beauty device is characterized in that the ultra-low frequency microcurrent generation unit sets the frequency of the ultra-low frequency range to a frequency that falls within the range of 0.1 Hz to 30 Hz. In the beauty device described in claim 3 ,
The beauty device is characterized in that the ultra-low frequency microcurrent generation unit sets the microcurrent to a current that falls within the range of 1 μA to 500 μA. In a beauty device described in any one of claims 1 to 4 ,
The main body of the torso is equipped with a level switch that allows for the selection of multiple intensity levels.
The aforementioned power supply signal generation circuit is
A radio wave voltage setting unit sets the voltage of the radio waves generated by the radio wave generation unit to a higher voltage as the intensity level selected by the level switch increases,
A beauty device characterized by having an ultra-low frequency microcurrent voltage setting unit that sets the voltage of the ultra-low frequency microcurrent generated by the ultra-low frequency microcurrent generation unit to a higher voltage as the intensity level selected by the level switch increases.