KR20240036349A - Skin care device - Google Patents

Abstract

The present invention relates to a skin care device, comprising: a body including a first terminal; and a head portion connected to the body and detachable from the body, wherein the head portion includes a housing including a receiving space therein; a substrate disposed within the housing; an electrode portion disposed within the housing and on the substrate; and a second terminal provided under the substrate and electrically connected to the first terminal of the body, wherein the electrode unit includes: a first electrode disposed at the center of the head unit; a second electrode surrounding the first electrode and spaced at equal intervals; a third electrode surrounding the second electrode and disposed at equal intervals; and a fourth electrode surrounding the third electrode and disposed at equal intervals, wherein the first, second, third, and fourth electrodes operate in a first RF mode, and the first RF mode operates in the first, second, and second electrodes. , By applying different frequencies alternately to any two of the 3 and 4 electrodes at a set period, high-frequency heat energy can be evenly transmitted from the upper dermis layer to the lower dermis layer.

Description

Skin care device {SKIN CARE DEVICE}

The present invention relates to a skin care device, which alternately applies different frequencies to a plurality of electrodes at a set period, so that high-frequency heat energy is evenly transmitted from the upper dermis layer to the lower dermis layer, and the electrodes disposed on the inside among the plurality of electrodes. relates to a skin care device that forms a movement passage for cosmetics (formulation) and does not form a movement passage in the outermost electrode, so that the cosmetics are evenly spread only on the inside of the head when used.

Human skin can be polluted by external activities, and wrinkles can form due to aging, hormonal changes, etc. Recently, as interest in skin has increased, various devices for cleansing, skin care, and anti-aging that can effectively remove skin contamination are being developed.

For example, devices that provide high-frequency, infrared energy to the skin are being developed. The device is a device that applies heat energy to the skin. By applying heat energy to the skin, the device can improve the elasticity of the applied skin area or effectively provide beauty products inside the skin.

Additionally, devices that provide sound waves and light to the skin are being developed. For example, sonophoresis and laserporation devices that can provide beauty products inside the skin using ultrasound or laser light are being developed. The devices can use ultrasound or laser light to form a path for injection of cosmetics into the skin, which can increase the skin penetration rate of skin care products.

Additionally, devices are being developed that physically provide beauty products to the skin using low current. For example, devices that use iontophoresis, electroporation, electroosmosis, etc., apply current to charged or neutral beauty products to inject active ingredients into the skin. It is a device that can be provided effectively internally.

That is, various devices that can provide skin beautification and anti-aging functions using light energy, sound waves, current, vibration, etc. are being developed.

In general, beauty devices using high frequency waves are devices that care for the skin by applying electrical stimulation to the skin, and can provide electrical stimulation in a high frequency band to the skin. To explain the high-frequency device in detail, when high-frequency waves are applied to the skin, deep heat, which is frictional heat, may be generated as ions in cells move from the cathode to the anode. Deep heat is about 40℃ to about 50℃, and the skin can be sterilized by deep heat. In addition, deep heat can expand the blood vessels inside the skin, improve metabolic function, and allow beauty products to be effectively delivered to the skin.

For this purpose, devices using high frequencies include electrodes formed on the surface, and the electrodes can be in contact with the user's skin. However, when the device is used on a curved skin area such as the face, the contact between the electrode and the skin may not be smooth. Accordingly, excessive high frequencies are provided to some areas, which may cause skin damage such as burns, and there is a problem in which high frequencies are not provided to some other areas.

Additionally, the electrodes of the device generally have a shape that protrudes from the surface of the device for contact with the skin. At this time, when the user holds the device and massages the skin, there is a problem that it is difficult to naturally massage curved skin areas such as both cheeks, chin, and both eyes due to the protruding electrodes.

Therefore, a new skin care device that can solve the above-mentioned problems is required.

The present invention was created to solve the problems of the prior art as described above. The purpose of the present invention is to ensure that high-frequency heat energy is evenly transmitted from the upper dermis layer to the lower dermis layer, and to ensure skin care that ensures that cosmetics are evenly spread only inside the head when used. The purpose is to provide equipment.

A skin care device according to one aspect of the present invention includes a body including a first terminal; and a head portion connected to the body and detachable from the body, wherein the head portion includes a housing including a receiving space therein; a substrate disposed within the housing; an electrode portion disposed within the housing and on the substrate; and a second terminal provided under the substrate and electrically connected to the first terminal of the body, wherein the electrode unit includes: a first electrode disposed at the center of the head unit; a second electrode surrounding the first electrode and spaced at equal intervals; a third electrode surrounding the second electrode and disposed at equal intervals; and a fourth electrode surrounding the third electrode and disposed at equal intervals, wherein the first, second, third, and fourth electrodes operate in a first RF mode, and the first RF mode operates in the first, second, and second electrodes. , By applying different frequencies alternately to any two of the 3 and 4 electrodes at a set period, high-frequency heat energy can be evenly transmitted from the upper dermis layer to the lower dermis layer.

Specifically, the first RF mode sets the frequencies to be used for the first, second, third, and fourth electrodes to four frequencies in the range of 1 MHz to 3 MHz (high frequency), and the four frequencies are arranged in order from longest to shortest frequency. It can be set to the first frequency, second frequency, third frequency, and fourth frequency.

Specifically, the first frequency may be set to 2.2MHz, the second frequency may be set to 1.8MHz, the third frequency may be set to 1.4MHz, and the fourth frequency may be set to 1.0MHz.

Specifically, it further includes an acceleration mode for rapid heat transfer to the skin before operating the first RF mode, and the acceleration mode includes acceleration level 1, acceleration level 2, and acceleration level 3, where the acceleration time is set in order from short to long. It is operated by selecting any one of the 3rd and 4th electrodes, a current of the first frequency is supplied with a duty of 100%, a negative current is applied to one of the 3rd and 4th electrodes, and the other electrode is supplied. A positive current may be applied to the electrode.

Specifically, the 1st RF mode is automatically executed for a certain period of time from the time the acceleration mode is completed, execution is automatically stopped after a certain period of time, and any 2 of the 1st, 2nd, 3rd, and 4th electrodes If any two frequency currents among the 1st, 2nd, 3rd, and 4th frequencies are alternately applied to the electrodes at a set period, the current can be divided into Step 1 and Step 2 by not supplying current to the other two electrodes. there is.

Specifically, in the first RF mode, in Step 1, currents of the second frequency and the fourth frequency are alternately applied several to dozens of times at a period of less than 1 second to each of the first and second electrodes during the first set time. In step 2, the currents of the first frequency and the third frequency are alternately applied several to tens of times at a period of less than 1 second to each of the third and fourth electrodes during the first set time, and two A negative current is applied to one of the first and second electrodes or the two third and fourth electrodes and a positive current is applied to the other electrode, and step 1 and step 2 are performed using the first, second and third electrodes. , It can be executed alternately with a gap of a second set time when current is not supplied to each of the four electrodes.

Specifically, the first set time may become longer as it goes from the acceleration level 1 to the acceleration level 3, and the second set time may become relatively shorter as it goes from the acceleration level 1 to the acceleration level 3.

Specifically, the first RF mode may be repeatedly executed for a certain period of time in the order of step 1 -> step 2 -> step 1 -> step 2 after the acceleration mode.

Specifically, the first, second, third and fourth electrodes operate in the first EMS mode instead of the first RF mode, and the first EMS mode is applied to any two of the first, second, third and fourth electrodes. When a current of 5 frequencies is applied at a set cycle, the current is not supplied to the other two electrodes and is divided into Step 3, Step 4, and Step 5. In Step 3, the current is applied to the third and fourth electrodes, respectively. A current of the fifth frequency is applied, and in step 4, a current of the fifth frequency is applied to each of the first and fourth electrodes, and in step 5, a current of the fifth frequency is applied to each of the first and second electrodes. A current is applied, and a negative current is applied to one of the two third and fourth electrodes, the two first and fourth electrodes, or the two first and second electrodes, and a positive current is applied to the other electrode. may be approved.

Specifically, the first EMS mode is one of stimulation level 1, stimulation level 2, and stimulation level 3, where the stimulation time is set in order from shortest to longest so that the stimulation time is different in each of step 3, step 4, and step 5. Any one can be selected and executed, and current can be prevented from being supplied to each of the first, second, third, and fourth electrodes for a certain period of time between each of step 3, step 4, and step 5.

Specifically, the first EMS mode is constant in the following order: Step 3 -> Step 4 -> Step 5 -> Step 4 -> Step 3 -> Step 4 -> Step 5 -> Step 4 It can be run repeatedly over time.

Specifically, the first, second, third, and fourth electrodes operate in RF+EMS mode instead of the first RF mode, and the RF+EMS mode operates when any two of the first, second, third, and fourth electrodes operate. The 2RF mode is executed on the other two electrodes, and the 2EMS mode is executed on the other two electrodes, which can be divided into step 6, step 7, and step 8.

Specifically, in step 6, the first and second electrodes are run in the 2RF mode, the third and fourth electrodes are run in the 2EMS mode, and in step 7, the second and third electrodes are run in the 2RF mode. mode, the first and fourth electrodes are executed in the second EMS mode, and in step 8, the third and fourth electrodes are executed in the second RF mode, and the first and second electrodes are executed in the second EMS mode. It can be executed with .

Specifically, the 2nd RF mode sets the frequencies to be used for the 1st, 2nd, 3rd, and 4th electrodes to four frequencies in the range of 1MHz to 3MHz (high frequency), and the four frequencies are arranged in order from longest to shortest frequency. The first frequency, second frequency, third frequency, and fourth frequency are set, and the second EMS mode sets the frequency to be used for the first, second, third, and fourth electrodes to one fifth frequency in the range of low frequencies. You can.

Specifically, it further includes an acceleration mode for rapid heat transfer to the skin before operating the second RF mode, and the acceleration mode includes acceleration level 1, acceleration level 2, and acceleration level 3, with acceleration times set in order from short to long. It is operated by selecting any one of the 3rd and 4th electrodes, a current of the first frequency is supplied with a duty of 100%, a negative current is applied to one of the 3rd and 4th electrodes, and the other electrode is supplied. A positive current may be applied to the electrode.

Specifically, in the second RF mode, in step 6, currents of the first frequency and the second frequency are alternately applied several to dozens of times at a period of less than 1 second to each of the first and second electrodes during the first set time. In step 7, the current of the second frequency and the third frequency is alternately applied several to dozens of times at a period of less than 1 second to each of the second and third electrodes during the first set time, and the step In 8, the current of the third frequency and the fourth frequency is alternately applied several to dozens of times at a period of less than 1 second to each of the third and fourth electrodes during the first set time, and the two first and second electrodes are A negative current is applied to one of the electrodes, the two second and third electrodes, or the two third and fourth electrodes, and the other positive current is applied, and step 6, step 7, and step 8 are executed alternately with a gap of a second set time during which current is not supplied to each of the first, second, third, and fourth electrodes, and the first set time becomes longer from acceleration level 1 to acceleration level 3. The second set time becomes relatively shorter from acceleration level 1 to acceleration level 3, and in the second EMS mode, in step 6, a current of the fifth frequency is applied to each of the third and fourth electrodes. In step 7, the current of the fifth frequency is applied to each of the first and fourth electrodes, and in step 8, the current of the fifth frequency is applied to each of the first and second electrodes, A negative current may be applied to one of the two third and fourth electrodes, the two first and fourth electrodes, or the two first and second electrodes, and a positive current may be applied to the other electrode.

Specifically, the second EMS mode is one of stimulation level 1, stimulation level 2, and stimulation level 3, where the stimulation time is set in order from short to long so that the stimulation time is different in each of step 6, step 7, and step 8. Any one can be selected and executed, and current can be prevented from being supplied to each of the first, second, third, and fourth electrodes for a certain period of time between each of step 6, step 7, and step 8.

Specifically, the RF+EMS mode is the step 6 -> the step 7 -> the step 8 -> the step 7 -> the step 6 -> the step 7 -> in the 2nd RF mode and the 2nd EMS mode. It can be repeatedly executed for a certain period of time in the order of step 8 -> step 7.

The skin care device according to the present invention applies different frequencies to a plurality of electrodes alternately at a set period, allowing high-frequency heat energy to be evenly transmitted from the upper dermis layer to the lower dermis layer in RF mode, thereby maximizing the skin improvement effect. there is.

In addition, the skin care device according to the present invention forms a movement path for cosmetics (formulation) in the electrodes disposed inside among the plurality of electrodes, so that the cosmetics can be evenly spread across the electrodes along the movement path when used.

In addition, the skin care device according to the present invention does not form a movement passage in the outermost electrode among the plurality of electrodes, so that cosmetics can be spread evenly only inside the head portion when used.

In addition, the skin care device according to the present invention uses a combination of high and low frequencies on a plurality of electrodes, so that high-frequency heat energy is evenly transmitted from the upper dermal layer to the lower dermal layer by the electrodes operating in RF mode, and EMS (Electrical Muscle) Electrodes operating in stimulation mode can eliminate muscle pain and activate muscles, further maximizing the skin improvement effect.

In addition, the skin care device according to the present invention can provide light of various wavelength bands to the user's skin through a light emitting device, thereby inducing the formation of collagen in the user's skin, reducing fine wrinkles, etc. Not only can it maximize the cosmetic effect, but it can also provide therapeutic effects, such as soothing the area to which light of various wavelength bands is applied or relieving formed inflammation.

In addition, the skin care device according to the present invention can have high efficiency by making the head part provided with a plurality of electrodes detachable from the body, so that only the head part can be replaced when the head part is damaged or broken, and the head provided by the user can be replaced. If you want to use additional functions other than those included in the unit, you can use the head unit containing the additional functions by connecting it to the body without the need to separately purchase or equip a skin care device for the additional functions, so the user can use the skin care device. can be used economically and efficiently.

In addition, the skin care device according to the present invention is capable of supplying at least one current selected from galvanic current and micro-current as well as high-frequency/low-frequency current to a plurality of electrodes, thereby forming deep heat within the user's skin. , It can activate muscles, promote the production of adenosine triphosphate (ATP), and effectively deliver cosmetics or drugs into the skin.

In addition, the skin care device according to the present invention can effectively adhere to relatively curved areas such as the chin, both cheeks, and around the eyes by allowing the plurality of electrodes to curve the surface of the head portion in contact with the user's skin. The electrodes can effectively massage the user's skin by effectively contacting the skin without being separated from the skin.

1 is a perspective view of a skin care device according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of a skin care device according to an embodiment of the present invention.
Figure 3 is a rear perspective view of the head portion of the skin care device according to an embodiment of the present invention.
Figure 4 is a front view of the head portion of the skin care device according to an embodiment of the present invention.
Figure 5 is a cross-sectional view of the head portion cut along line A-A' in Figure 4.
Figure 6 is an exploded perspective view of the head portion of the skin care device according to an embodiment of the present invention.
Figure 7 is a first perspective view of an electrode portion in a skin care device according to an embodiment of the present invention.
Figure 8 is a second perspective view of an electrode portion in a skin care device according to an embodiment of the present invention.
Figure 9 is an exploded perspective view of an electrode portion in a skin care device according to an embodiment of the present invention.
Figure 10 is a front view of the cover of the housing in the skin care device according to an embodiment of the present invention.
Figures 11 (a) and (b) are diagrams comparing the transfer of heat energy to the dermal layer in the skin care device of the present invention and the skin care device of the comparative invention.

The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In this specification, when adding reference numbers to components in each drawing, it should be noted that identical components are given the same number as much as possible even if they are shown in different drawings. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view of a skin care device according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a skin care device according to an embodiment of the present invention, and Figure 3 is a skin care device according to an embodiment of the present invention. This is a rear perspective view of the head part of the device.

Referring to FIGS. 1 to 3, a skin care device 1 according to an embodiment of the present invention may include a body 2 and a head portion 3.

The body 2 may have a shape that allows the user to easily hold it by hand, and may be connected to the head portion 3. The body 2 may have a shape extending in one direction. For example, the body 2 may have a shape extending in the vertical direction. The body 2 may have a bar or stick shape extending in one direction, such as a cylinder, polygonal column, etc. Accordingly, the user can control the position of the skin care device 1 by holding the body 2 with the hand.

The body 2 may include a front cover 21, a rear cover 22, and a recess 23. The body 2 may have an internal accommodation space provided by the front cover 21 and the rear cover 22. In the housing space of the body (1), there is a skin care device (1) such as a battery (24), a charging terminal (25), a switch (26), a function button (27), an indicator lamp (28), and a first terminal (29). Various elements that operate may be disposed.

The recess 23 may be provided on one side of the upper part of the front cover 21 of the body 2. The recess 23 may have a concave shape on one side of the front cover 21 of the body 2 toward the inside of the body 2, and may be configured to make the head portion 3 detachable.

Battery 24 may supply power to skin care device 1 . For example, the battery 24 may supply power to the body 2 and the head portion 3 connected to the body 2, respectively. The battery 24 may include one selected from primary batteries such as manganese (Mn) batteries, alkaline batteries, mercury batteries, and silver oxide batteries. Additionally, the battery 24 may include one selected from secondary batteries such as nickel cadmium (Ni-Cd) batteries, nickel hydride (Ni-MH) batteries, and lithium ion (Li-ion) batteries. there is.

When the skin care device 1 includes a rechargeable battery 24, a cover for attaching and detaching the battery 24 may be disposed on the rear cover 22 of the body 2. Alternatively, when the battery 24 is placed inside the body 2 and is difficult to attach or detach, a charging terminal 25 may be provided on the rear cover 22 of the skin care device 1. The charging terminal 25 is electrically connected to the battery 24 disposed inside the body 2, and a portion may be exposed to the outside of the rear cover 22 of the body 2. The user can charge the battery 24 by connecting a USB port, cable, etc. for charging the battery 24 to the exposed charging terminal 25. Alternatively, the skin care device 1 may be provided with wireless charging capability. Specifically, the skin care device 1 may be provided with wireless charging capability through a coil or the like disposed within the body 2. For example, the skin care device 1 may charge the battery 24 using a wireless charging method, such as a magnetic resonance method or a magnetic induction method.

The switch 26 may be installed to partially protrude outside the front cover 21 of the body 2, and the installation location is not limited. Of course, the switch 26 may be installed at any location that the user can conveniently operate. The switch 26 may be a physical switch containing an elastic body such as a spring. Additionally, the switch 26 may be an electrical switch formed with a touch electrode or the like. The user can turn on/off the operation of the skin care device 1 through the switch 26.

The function button 27 may be installed to partially protrude outside the front cover 21 of the body 2, and the installation location is not limited. Of course, it can be installed in any position where the user can conveniently operate it. . there is. The function button 27 can select a function of the skin care device 1. For example, the function button 27 can select functions such as 1st RF mode, 1st EMS mode, RF+EMS mode, and light emission mode.

The indicator lamp 28 may be installed to be partially exposed to the outside of the front cover 21 of the body 2. For example, the indicator lamp 28 may be disposed adjacent to the switch 26 and/or the function button 27, and may indicate the switching state of the skin care device 1, the first RF mode, the first EMS mode, or the light emitting mode. The current status of the skin care device, such as the functional status of the skin, can be displayed.

The first terminal 29 may be electrically connected to the battery 24. The first terminal 29 may be electrically connected to the second terminal 34 of the head portion 3 coupled through the recess 23.

The head portion 3 may be connected to the body 2, and the head portion 3 may be physically connected to the body 2. For example, the head portion 3 may have a shape corresponding to the recess 23 provided in the front cover 21 of the body 2, and is inserted into this recess 23 at a predetermined depth. can be connected The head portion 3 may be configured to be detachable from the body 2.

Additionally, the head portion 3 may be electrically connected to the body 2. For example, the head portion 3 may have a second terminal 34 provided on its lower surface and be electrically connected through a first terminal 29 provided in the internal receiving space of the body 2. Accordingly, the battery 24 disposed in the body 2 can supply power to the head unit 3.

Hereinafter, the head portion 3 will be described in detail with reference to FIGS. 4 to 10.

Figure 4 is a front view of the head part of the skin care device according to an embodiment of the present invention, Figure 5 is a cross-sectional view of the head part cut along line A-A' in Figure 4, and Figure 6 is an embodiment of the present invention. Figure 7 is an exploded perspective view of the head portion of the skin care device according to an embodiment of the present invention, Figure 7 is a first perspective view of the electrode portion of the skin care device according to an embodiment of the present invention, and Figure 8 is an exploded perspective view of the electrode portion of the skin care device according to an embodiment of the present invention. It is a second perspective view, Figure 9 is an exploded perspective view of the electrode portion in the skin care device according to an embodiment of the present invention, and Figure 10 is a front view of the cover of the housing in the skin care device according to an embodiment of the present invention.

The head portion 3 may include a housing 31, a substrate 32, a light emitting element 33, a second terminal 34, and an electrode portion 35.

The housing 31 may be composed of an edge 311 and a cover 312 that covers the upper part of the edge 311, so that the lower part is open and has an accommodating space therein. The substrate 32, the light emitting element 33, the second terminal 34, and the electrode portion 35 can be accommodated in the housing space of the housing 31. The edge 311 may be formed to a size that secures the edges of the substrate 32 and the electrode portion 35.

The cover 312 may be provided on the edge 311. The cover 312 may be translucent or opaque, and may include a material capable of transmitting light emitted from the light emitting device 33. Additionally, the cover 312 is light and may include a material that can prevent damage from external impact or contact. For example, the cover 312 may include at least one of materials such as resin, ceramic, and metal to transmit light emitted from the light emitting device 33 and at the same time have improved reliability against the external environment.

The cover 312 may have a structure that can be coupled to and separated from the edge 311. However, the embodiment is not limited to this, and of course, the cover 312 and the edge 311 may be formed integrally.

As described above, the housing 31 consisting of the edge 311 and the cover 312 has a plurality of holes 313a, 313b, 313c, 313d, so that a portion of the electrode portion 35 is exposed to the outside when accommodated. 313e, 313f, 313g). Considering that the plurality of holes 313a, 313b, 313c, 313d, 313e, 313f, and 313g are related to the electrode portion 35, they will be described later together with the electrode portion 35.

A substrate 32 may be accommodated within the housing 31. A plurality of light emitting devices 33 may be disposed on the upper part of the substrate 32, and a second terminal 34 electrically connected to the first terminal 29 of the body 2 may be provided on the lower part of the substrate 32. It can be provided.

The plurality of light emitting devices 33 may be electrically connected to the substrate 32. A plurality of light emitting devices 33 may be disposed on the upper surface of the substrate 32. A plurality of light emitting devices 33 may be disposed at the edge area of the substrate 32 .

The plurality of light emitting elements 33 can emit light in the visible light band when the light emission mode is selected by the function button 27. Specifically, the plurality of light emitting devices 33 are visible light emitting devices and can emit light with a wavelength of about 400 nm or more. For example, the plurality of light emitting devices 33 emit green light in a wavelength band of about 450 nm to about 580 nm, orange light in a wavelength band of about 590 nm to about 620 nm, and red light in a wavelength band of about 620 nm to about 750 nm. Red) light may be emitted in at least one wavelength band.

In this embodiment, the light emission mode can be used alone, in combination with the 1st RF mode, 1st EMS mode, or RF+EMS mode. The skin care device 1 of the present invention can operate in a light-emitting mode together with the first RF mode, the first EMS mode, or the RF+EMS mode.

The electrode portion 35 may be accommodated inside the housing 31. The electrode unit 35 may be disposed on the substrate 32 . The electrode portion 35 may include a material that is harmless to the human body. Specifically, the electrode portion 35 does not change shape due to contact pressure with the skin and may include a conductive metal material. For example, the electrode portion 35 includes aluminum (Al), copper (Cu), zinc (Zn), iron (Fe), nickel (Ni), chromium (Cr), silver (Ag), gold (Au), and platinum. It may include at least one metal selected from (Pt), stainless steel (SUS), and alloys thereof.

The electrode portion 35 is electrically connected to the substrate 32 and may be in contact with the user's skin. The electrode unit 35 can provide at least one of galvanic current and micro-current as well as high-frequency/low-frequency current to the user's skin.

The electrode unit 35 may include a plurality of electrodes 351a, 351b, 351c, and 351d. For example, the electrode unit 35 may include a first electrode 351a, a second electrode 351b, a third electrode 351c, and a fourth electrode 351d that are spaced apart from each other.

The first electrode 351a may be disposed in the center of the head portion 3, the second electrode 351b may be disposed at equal intervals surrounding the circumference of the first electrode 351a, and the third electrode (351a) may be disposed at equal intervals. 351c) may surround the circumference of the second electrode 351b and may be spaced apart at equal intervals, and the fourth electrode 351d may surround the circumference of the third electrode 351c and may be arranged at equal intervals.

The first electrode 351a may have a half square ring shape in plan, but is not limited to this, and of course can be implemented in various ways, such as a ring shape or a donut shape of various shapes. The first electrode 351a may be formed with a first width and a first height, and may have a cross-sectional shape of an inverted U shape. Accordingly, the weight of the first electrode 351a can be reduced, and further, the overall weight and manufacturing cost of the head portion 3 can be reduced.

The first electrode 351a may include a first contact portion 352a and a second contact portion 352b exposed to the outside of the head portion 3. The first contact portion 352a and the second contact portion 352b may be electrodes that contact the user's skin.

The first contact portion 352a and the second contact portion 352b may have shapes corresponding to each other. For example, the first contact portion 352a and the second contact portion 352b may have a U-shape with a cross-sectional shape turned upside down.

The first contact portion 352a and the second contact portion 352b may face each other in the first direction (horizontal direction) and be spaced apart. Additionally, the first contact portion 352a and the second contact portion 352b may be symmetrical to each other based on an imaginary line in the second direction (vertical direction).

The first contact portion 352a and the second contact portion 352b may include an upper surface that faces the user's skin. The upper surface of each of the first contact portion 352a and the second contact portion 352b may be disposed higher than the upper surface of the cover 312 of the housing 31. Accordingly, the first contact part 352a and the second contact part 352b can be in contact with the user's skin and can provide at least one of galvanic current and micro-current as well as high-frequency/low-frequency current to the skin.

The first electrode 351a may further include a first connection part 353a and a second connection part 353b. The first connection part 353a and the second connection part 353b are disposed at both ends of the first contact part 352a and the second contact part 352b, respectively, and can connect the first contact part 352a and the second contact part 352b. there is.

The first connection part 353a and the second connection part 353b may have shapes corresponding to each other. For example, the first connection part 353a and the second connection part 353b may face each other in the second direction (vertical direction) and be spaced apart. Additionally, the first connection portion 353a and the second connection portion 353b may be symmetrical with respect to an imaginary line in the first direction (horizontal direction).

The first connection part 353a and the second connection part 353b may not be exposed to the outside of the head part 3. For example, the first connection portion 353a and the second connection portion 353b may have a shape that is bent and extended from both ends of the first contact portion 352a and the second contact portion 352b in the direction of the substrate 32. there is.

The first connection part 353a and the second connection part 353b may have a lower height than the first contact part 352a and the second contact part 352b. The upper surface of each of the first connection part 353a and the second connection part 353b may be disposed lower than the upper surface of the cover 312. The first connection portion 353a and the second connection portion 353b may be provided in a concave shape at both ends of the first contact portion 352a and the second contact portion 352b.

These first connection parts 353a and second connection parts 353b can provide a passage for the cosmetics (formulation) to move, so that when used, the cosmetics are connected to the first electrode (353a) and the second connection part 353b. 351a) can be spread evenly.

Additionally, the embodiment may include a first contact portion 354a connecting the first electrode 351a and the substrate 32. The first contact portion 354a may extend in the direction of the substrate 32 in at least one configuration of the first contact portion 352a, the second contact portion 352b, the first connection portion 353a, and the second connection portion 353b. and allows the set current to be applied to the first electrode 351a.

The second electrode 351b may have a shape corresponding to the first electrode 351a. For example, the second electrode 351b may have a half square ring shape in plan, but is not limited to this and can be implemented in various ways, such as a ring shape or a donut shape of various shapes. The second electrode 351b may be formed with a second width and a second height, and may have a U-shaped cross-sectional shape turned upside down. Accordingly, the weight of the second electrode 351b can be reduced, and further, the overall weight and manufacturing cost of the head part 3 can be reduced.

The second electrode 351b may include a third contact portion 352c and a fourth contact portion 352d exposed to the outside of the head portion 3. The third contact portion 352c and the fourth contact portion 352d may be electrodes that contact the user's skin.

The third contact portion 352c and the fourth contact portion 352d may have shapes corresponding to each other. For example, the third contact portion 352c and the fourth contact portion 352d may have a U-shape with a cross-sectional shape turned upside down.

The third contact portion 352c and the fourth contact portion 352d may face each other in the first direction (horizontal direction) and be spaced apart. Additionally, the third contact portion 352c and the fourth contact portion 352d may be symmetrical to each other based on an imaginary line in the second direction (vertical direction).

The third contact portion 352c and the fourth contact portion 352d may include an upper surface that faces the user's skin. The upper surface of each of the third contact portion 352c and the fourth contact portion 352d may be disposed above the upper surface of the cover 312 of the housing 31. Accordingly, the third contact part 352c and the fourth contact part 352d can be in contact with the user's skin and can provide at least one of galvanic current and micro-current as well as high-frequency/low-frequency current to the skin.

The second electrode 351b may further include a third connection part 353c and a fourth connection part 353d. The third connection part 353c and the fourth connection part 353d are disposed at both ends of the third contact part 352c and the fourth contact part 352d, respectively, and can connect the third contact part 352c and the fourth contact part 352d. there is.

The third connection part 353c and the fourth connection part 353d may have shapes corresponding to each other. For example, the third connection part 353c and the fourth connection part 353d may face each other in the second direction (vertical direction) and be spaced apart. Additionally, the third connection portion 353c and the fourth connection portion 353d may be symmetrical with respect to an imaginary line in the first direction (horizontal direction).

The third connection part 353c and the fourth connection part 353d may not be exposed to the outside of the head part 3. For example, the third connection portion 353c and the fourth connection portion 353d may have a shape that is bent and extended from both ends of the third contact portion 352c and the fourth contact portion 352d in the direction of the substrate 32. there is.

The third connection part 353c and the fourth connection part 353d may have a lower height than the third contact part 352c and the fourth contact part 352d. The upper surface of each of the third connection parts 353c and the fourth connection parts 353d may be disposed lower than the upper surface of the cover 312. The third connection portion 353c and the fourth connection portion 353d may be provided in a concave shape at both ends of the third contact portion 352c and the fourth contact portion 352d.

These third connection parts 353c and fourth connection parts 353d can provide a passage for the cosmetics (formulation) to move, so that when used, the cosmetics are connected to the second electrode ( 351b) can be spread evenly.

Additionally, the embodiment may include a second contact portion 354b connecting the second electrode 351b and the substrate 32. The second contact portion 354b may extend in the direction of the substrate 32 in at least one configuration of the third contact portion 352c, the fourth contact portion 352d, the third connection portion 353c, and the fourth connection portion 353d. and allows the set current to be applied to the second electrode 351b.

The third electrode 351c may have a shape corresponding to the second electrode 351b. For example, the third electrode 351c may have a half square ring shape in plan, but is not limited to this, and can be implemented in various ways, such as a ring shape or a donut shape of various shapes. The third electrode 351c may be formed with a third width and a third height, and may have a U-shaped cross-sectional shape turned upside down. Accordingly, the weight of the third electrode 351c can be reduced, and further, the overall weight and manufacturing cost of the head portion 3 can be reduced.

The third electrode 351c may include a fifth contact portion 352e and a sixth contact portion 352f exposed to the outside of the head portion 3. The fifth contact portion 352e and the sixth contact portion 352f may be electrodes that contact the user's skin.

The fifth contact portion 352e and the sixth contact portion 352f may have shapes corresponding to each other. For example, the fifth contact portion 352e and the sixth contact portion 352f may have a U-shape with a cross-sectional shape turned upside down.

The fifth contact portion 352e and the sixth contact portion 352f may face each other in the first direction (horizontal direction) and be spaced apart. Additionally, the fifth contact portion 352e and the sixth contact portion 352f may be symmetrical to each other based on an imaginary line in the second direction (vertical direction).

The fifth contact portion 352e and the sixth contact portion 352f may include an upper surface that faces the user's skin. The upper surface of each of the fifth contact portion 352e and the sixth contact portion 352f may be disposed higher than the upper surface of the cover 312 of the housing 31. Accordingly, the fifth contact portion 352e and the sixth contact portion 352f can be in contact with the user's skin and can provide at least one of galvanic current and micro-current as well as high-frequency/low-frequency current to the skin.

The third electrode 351c may further include a fifth connection portion 353e and a sixth connection portion 353f. The fifth connection part 353e and the sixth connection part 353f are disposed at both ends of the fifth contact part 352e and the sixth contact part 352f, respectively, and can connect the fifth contact part 352e and the sixth contact part 352f. there is.

The fifth connection part 353e and the sixth connection part 353f may have shapes corresponding to each other. For example, the fifth connection part 353e and the sixth connection part 353f may face each other in the second direction (vertical direction) and be spaced apart. Additionally, the fifth connection portion 353e and the sixth connection portion 353f may be symmetrical with respect to an imaginary line in the first direction (horizontal direction).

The fifth connection part 353e and the sixth connection part 353f may not be exposed to the outside of the head part 3. For example, the fifth connection portion 353e and the sixth connection portion 353f may have a shape that is bent and extended from both ends of the fifth contact portion 352e and the sixth contact portion 352f in the direction of the substrate 32. there is.

The fifth connection portion 353e and the sixth connection portion 353f may have a lower height than the fifth contact portion 352e and the sixth contact portion 352f. The upper surfaces of each of the fifth connection parts 353e and the sixth connection parts 353f may be disposed lower than the upper surface of the cover 312. The fifth connection portion 353e and the sixth connection portion 353f may be provided in a concave shape at both ends of the fifth contact portion 352e and the sixth contact portion 352f.

These fifth connection parts (353e) and sixth connection parts (353f) can provide a passage for cosmetics (formulation) to move, so that when used, cosmetics travels through the third electrode ( 351c) can be spread evenly.

Additionally, the embodiment may include a third contact portion 354c connecting the third electrode 351c and the substrate 32. The third contact portion 354c may extend in the direction of the substrate 32 in at least one configuration of the fifth contact portion 352e, the sixth contact portion 352f, the fifth connection portion 353e, and the sixth connection portion 353f. and allows the set current to be applied to the third electrode 351c.

The fourth electrode 351d may have a shape corresponding to the third electrode 351c. For example, the fourth electrode 351d may have a half square ring shape in plan, but is not limited to this, and can be implemented in various ways, such as a ring shape or a donut shape of various shapes. The fourth electrode 351d may be formed with a fourth width and a fourth height, and may have a cross-sectional shape of an inverted U shape. Accordingly, the weight of the fourth electrode 351d can be reduced, and further, the overall weight and manufacturing cost of the head portion 3 can be reduced.

In this embodiment, the fourth electrode 351d, unlike the above-described first, second, and third electrodes 351a, 351b, and 351c, has one common electrode with the connection portions 353a, 353b, 353c, 353d, 353e, and 353f omitted. It has a seventh contact portion (352g).

The fourth electrode 351d may include a seventh contact portion 352g exposed to the outside of the head portion 3. The seventh contact portion 352g may be an electrode that contacts the user's skin.

The seventh contact portion 352g may have a U-shaped cross-sectional shape turned upside down.

The seventh contact portion 352g may include an upper surface that faces the user's skin. The upper surface of the seventh contact portion 352g may be disposed higher than the upper surface of the cover 312 of the housing 31. Accordingly, the seventh contact portion 352g can be in contact with the user's skin and can provide at least one of galvanic current and micro-current as well as high-frequency/low-frequency current to the skin.

As such, the fourth electrode 351d of this embodiment, unlike the above-described first, second, and third electrodes 351a, 351b, and 351c, has connection parts 353a, 353b, 353c, 353d, 353e, which provide a passage for cosmetics to move. By not forming 353f), cosmetics can be spread evenly only on the inside of the head portion 3 when used.

Additionally, the embodiment may include a fourth contact portion 354e connecting the fourth electrode 351d and the substrate 32. At least one fourth contact portion 354e may extend in the direction of the substrate 32 from the seventh contact portion 352g, and allow a set current to be applied to the fourth electrode 351d.

In this embodiment, the first width of the first electrode 351a, the second width of the second electrode 351b, the third width of the third electrode 351c, and the fourth width of the fourth electrode 351d Each of the widths may be the same or similar.

However, in this embodiment, the first height of the first electrode (351a), the second height of the second electrode (351b), the third height of the third electrode (351c), and the fourth electrode (351d) Each of the fourth heights may be the same or similar, but it may be desirable to have them formed differently for the following reasons.

For example, the first height of the first electrode 351a disposed in the center of the head portion 3 relative to the horizontal plane is the highest, and the first height of the fourth electrode 351d disposed at the outermost portion of the head portion 3 is the highest. The fourth height may be the lowest.

For example, the height difference between neighboring electrodes in the first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d may be in the range of 5% to 25%. Preferably, the height difference between neighboring electrodes in the first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d may be in the range of 5% to 20%. More preferably, the height difference between neighboring electrodes in the first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d may be in the range of 5% to 15%.

When the height difference between neighboring electrodes in the first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d) is greater than about 25% or less than about 5%, the contact portion (352a, 352b, 352c, 352d) with the user's skin , 352e, 352f, 352g) may deteriorate the contact characteristics. For example, the user's skin area is divided into a flat skin area and a curved skin area such as both cheeks, chin, and both eye corners, and neighboring electrodes at the first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d When the height difference between electrodes exceeds about 25%, the contact characteristics of the contact portions (352a, 352b, 352c, 352d, 352e, 352f, 352g) in flat skin areas deteriorated, and when the height difference between electrodes is less than about 5%, the contact properties of the contact portions in curved skin areas deteriorated. The contact properties of (352a, 352b, 352c, 352d, 352e, 352f, 352g) were deteriorated. In addition, when the height difference between neighboring electrodes in the first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d) exceeds about 25%, cosmetics or A phenomenon occurred in which the drug moved to the edge area of the head unit (3) or moved to the center area of the head unit (3).

As described above, the housing 31 consisting of the edge 311 and the cover 312 has a plurality of holes 313a, 313b, 313c, 313d, so that a portion of the electrode portion 35 is exposed to the outside when accommodated. 313e, 313f, 313g).

The cover 312 includes first and second holes 313a and 313b formed in areas corresponding to the first and second contact portions 352a and 352b of the first electrode 351a, respectively, and the second electrode 351b. The third and fourth holes (313c and 313d) formed in the areas corresponding to the third and fourth contact parts (352c and 352d) respectively, and the fifth and sixth contact parts (352e and 352f) of the third electrode (351c) respectively. It may include fifth and sixth holes 313e and 313f formed in the area corresponding to the fourth electrode 351d, and a seventh hole 313g formed in the area corresponding to the seventh contact part 352g of the fourth electrode 351d.

Specifically, the first and second holes (313a, 313b) are respectively disposed in areas that overlap the first and second contact portions (352a, 352b) in the vertical direction and have shapes corresponding to the first and second contact portions (352a, 352b), respectively. You can have A part of the first electrode 351a, for example, a part of the first contact portion 352a, may be inserted and disposed in the first hole 313a, and a part of the first electrode 351a may be inserted into the second hole 313b. , for example, a portion of the second contact portion 352b may be inserted and disposed.

At this time, a partial area of each of the first and second contact parts 352a and 352b is disposed at the lower part of the cover 312, and the remaining area of each of the first and second contact parts 352a and 352b protrudes from the upper surface of the cover 312. It can come into contact with the user's skin.

In addition, the third and fourth holes (313c, 313d) are disposed in areas that overlap in the vertical direction with the third and fourth contact portions (352c, 352d) and have shapes corresponding to the third and fourth contact portions (352c, 352d), respectively. You can have it. A part of the second electrode 351b, for example, a part of the third contact portion 352c, may be inserted and disposed in the third hole 313c, and a part of the second electrode 351b may be inserted into the fourth hole 313d. , for example, a portion of the fourth contact portion 352d may be inserted and disposed.

At this time, a partial area of each of the third and fourth contact parts 352c and 352d is disposed at the lower part of the cover 312, and the remaining area of each of the third and fourth contact parts 352c and 352d protrudes from the upper surface of the cover 312. It can come into contact with the user's skin.

In addition, the 5th and 6th holes (313e, 313f) are respectively disposed in areas that overlap the 5th and 6th contact portions (352e, 352f) in the vertical direction and have shapes corresponding to the 5th and 6th contact portions (352e, 352f), respectively. You can have it. A part of the third electrode 351c, for example, a part of the fifth contact portion 352e, may be inserted and disposed in the fifth hole 313e, and a part of the third electrode 351c may be inserted into the sixth hole 313f. , for example, a portion of the sixth contact portion 352f may be inserted and disposed.

At this time, a partial area of each of the 5th and 6th contact parts 352e and 352f is disposed at the lower part of the cover 312, and the remaining area of each of the 5th and 6th contact parts 352e and 352f protrudes from the upper surface of the cover 312. It can come into contact with the user's skin.

Additionally, the seventh hole 313g is disposed in an area that overlaps the seventh contact portion 352g in the vertical direction and may have a shape corresponding to the seventh contact portion 352g. A portion of the fourth electrode 351d, for example, a portion of the seventh contact portion 352g, may be inserted and disposed in the seventh hole 313g.

At this time, a portion of the seventh contact portion 352g is disposed at the lower portion of the cover 312, and the remaining portion of the seventh contact portion 352g protrudes from the upper surface of the cover 312 and may be in contact with the user's skin.

The skin care device 1 of the present embodiment configured as described above includes the first, second, and second electrodes disposed inside the head portion 3 among the plurality of first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d. , By forming the first to sixth connection portions (353a, 353b, 353c, 353d, 353e, 353f) as cosmetic movement passages on the three electrodes (351a, 351b, 351c, 351d), when used, cosmetics are moved along all electrodes ( 351a, 351b, 351c, and 351d), and by not forming a connection as a moving passage in the fourth electrode (351d) disposed at the outermost part of the head portion (3), cosmetics do not enter the head portion when used. It can be spread evenly only on the inside.

In addition, the skin care device 1 of this embodiment alternately applies different frequencies to the plurality of first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d at a set period, thereby generating high frequencies in the first RF mode. It can ensure that thermal energy is evenly transmitted from the upper dermis layer to the lower dermis layer, and in EMS (Electrical Muscle Stimulation) mode, the low-frequency massage function eliminates muscle pain and activates the muscles.

The skin care device 1 according to the present invention operates in an acceleration mode, 1RF, by applying a current of a selected frequency to at least two electrodes selected from among the plurality of first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d. It can be operated in mode, first EMS mode, and RF+EMS mode, which are explained with reference to Table 1 below. Here, the acceleration mode may be included in the 1st RF mode. In this embodiment, the term 'acceleration' is used to refer to quickly raising the temperature of the skin to a certain level while using the skin care device. Under this concept, the acceleration mode operates the skin care device (1), quickly relieves the coldness felt upon contact with the skin due to metal and cosmetics when first used, and provides a quick feeling of warmth to the user's skin and heat transfer to the core. This refers to a type of acceleration (boosting) section in which current at the frequency that can heat the fastest for a certain period of time (the first frequency, which will be described later; 2.2Mhz) is applied at 100% duty prior to alternating the frequency of the basic operation.

1 electrode 2 electrodes 3 electrodes 4 electrodes Acceleration
mode 2.2MHz
(Acceleration level 1: 5s, Acceleration level 2: 10s, Acceleration level 3: 15s) RF(-) RF(+) RF
mode Step 1
(RF: 1.8MHz <-> 1.0MHz) RF(-) RF(+) Step 2
(RF: 2.2MHz <-> 1.4Mhz) RF(-) RF(+) EMS
mode Step 3
(EMS: 50Hz) EMS (-) EMS(+) Step 4
(EMS: 50Hz) EMS (-) EMS(+) Step 5 (EMS: 50Hz) EMS (-) EMS(+)
ModeRF+EMS Step 6
(RF: 2.2MHz <-> 1.8MHz), (EMS: 50Hz) RF(-) RF(+) EMS (-) EMS(+) Step 7
(RF:1.8MHz <-> 1.4MHz), (EMS: 50Hz) EMS (-) RF(+) RF(-) EMS(+) Step 8 (RF: 1.4MHz <-> 1.0MHz), (EMS: 50Hz) EMS (-) EMS(+) RF(-) RF(+)

The depth of high frequency penetration into the skin varies depending on the wavelength. Accordingly, the skin care device 1 of this embodiment includes four first, second, third, and fourth electrodes (351a, 351b, 351c, 351d) to deeply cover deep heat from the upper dermis layer to the lower dermis layer in the first RF mode. Four frequencies can be set in the range of 1MHz to 3MHz (high frequency).

The four frequencies can be set as the first frequency, second frequency, third frequency, and fourth frequency in order from longest to shortest frequency. For example, the first frequency may be set to 2.2Mhz, the second frequency may be set to 1.8MHz, the third frequency may be set to 1.4MHz, and the fourth frequency may be set to 1.0MHz, but is not limited thereto. .

These 1st, 2nd, 3rd, and 4th frequencies can be selectively applied in acceleration mode for rapid temperature rise and in 1st RF mode for massaging with the head unit 3.

The acceleration mode quickly increases the skin temperature to a certain level as soon as the device is used, improving the speed at which core heat is felt.

The acceleration mode can be operated by the user selecting one of acceleration level 1, acceleration level 2, and acceleration level 3 using the function button 27. Acceleration level 1, acceleration level 2, and acceleration level 3 can be set in order from shortest to longest acceleration time. For example, acceleration level 1 can be set to 5s (seconds), acceleration level 2 can be set to 10s (seconds), and acceleration level 3 can be set to 15s (seconds).

The acceleration mode supplies current to the third and fourth electrodes (351c and 351d) disposed on the outside of the electrode portion (35) among the first, second, third and fourth electrodes (351a, 351b, 351c and 351d) to accelerate the head portion ( 3) can be accelerated. At this time, the current of the first frequency (2.2Mhz), which has the highest frequency, can be supplied to the third and fourth electrodes (351c, 351d) with a duty of 100% so as to realize a faster temperature increase rate than the target.

In the above, a negative current may be applied to one of the third and fourth electrodes 351c and 351d to which a current of the first frequency (2.2Mhz) is applied, and a positive current may be applied to the other electrode. For example, a negative current may be applied to the third electrode 351c, and a positive current may be applied to the fourth electrode 351d.

The 1st RF mode may be automatically executed for a certain period of time from the time the acceleration mode is completed, and execution may be automatically stopped after a certain period of time has elapsed.

The first RF mode alternates the current of any two of the first, second, third, and fourth frequencies to any two of the four first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d) at a set period. If applied, it can be divided into Step 1 and Step 2 and executed in a way that does not supply current to the other two electrodes.

For example, in step 1, currents of the second frequency (1.8 MHz) and the fourth frequency (1.0 MHz) are alternately applied to each of the first electrode (351a) and the second electrode (351b) with a period of less than 1 second. In step 2, currents of the first frequency (2.2 MHz) and the third frequency (1.4 MHz) may be alternately applied to each of the third electrode (351c) and the fourth electrode (351d) with a period of less than 1 second. there is. The alternating period can be from 1 to 999 ms (milliseconds).

When the first RF mode is executed as step 1, step 2 is not executed, and conversely, when executed as step 2, step 1 is not executed. Step 1 and Step 2 can be executed alternately for a set time, and the 1st RF mode can be automatically terminated when the set time is reached. Below, the execution process of Step 1 and Step 2 will be described in detail.

In step 1, the current of the second frequency (1.8 MHz) and the current of the fourth frequency (1.0 MHz) are supplied alternately several to dozens of times to each of the first electrode (351a) and the second electrode (351b) during the first set time. You can.

In the above, a negative current may be applied to one of the two first and second electrodes 351a and 351b to which currents of the second and fourth frequencies are applied, and a positive current may be applied to the other electrode. For example, a negative current may be applied to the first electrode 351a and a positive current may be applied to the second electrode 351b.

In step 2, the current of the first frequency (2.2 MHz) and the current of the third frequency (1.4 MHz) are supplied alternately several to dozens of times to each of the third electrode (351c) and the fourth electrode (351d) during the first set time. You can.

In the above, a negative current may be applied to one of the two third and fourth electrodes 351c and 351d to which currents of the first and third wave numbers are applied, and a positive current may be applied to the other electrode. For example, a negative current may be applied to the third electrode 351c, and a positive current may be applied to the fourth electrode 351d.

Between Step 1 and Step 2 described above, a current with a frequency of 0 MHz is supplied (current off state) to each of the first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d) for the second set time.

In the above, the first set time and the second set time may vary depending on the acceleration level selected in the acceleration mode.

For example, if acceleration level 1 is selected in which a current of the first frequency (2.2Mhz) is supplied to the third and fourth electrodes 351c and 351d for 5s (seconds) in acceleration mode, the acceleration temperature corresponding to acceleration level 1 In order to maintain, the first set time for which step 1 or step 2 is executed may be 30 ms (milliseconds), and the second set time for which step 1 and step 2 are not executed may be 20 ms.

At this time, the current of the second frequency (1.8MHz) and the current of the fourth frequency (1.0MHz) applied to each of the first electrode (351a) and the second electrode (351b), and the third electrode (351c) and the fourth electrode ( 351d) The current of the first frequency (2.2 MHz) and the current of the third frequency (1.4 MHz) applied to each may be supplied with a duty of 60% to maintain the acceleration temperature corresponding to acceleration level 1, It is not limited to this.

In addition, when acceleration level 2 is selected in which a current of the first frequency (2.2Mhz) is supplied to the third and fourth electrodes 351c and 351d for 10 s (seconds) in acceleration mode, the acceleration temperature corresponding to acceleration level 2 is maintained. So that the first set time for which step 1 or step 2 is executed may be 40 ms (milliseconds), the second set time for which step 1 and step 2 are not executed may be 10 ms.

At this time, the current of the second frequency (1.8MHz) and the current of the fourth frequency (1.0MHz) applied to each of the first electrode (351a) and the second electrode (351b), and the third electrode (351c) and the fourth electrode ( 351d) The current of the first frequency (2.2 MHz) and the current of the third frequency (1.4 MHz) applied to each may be supplied with a duty of 80% to maintain the acceleration temperature corresponding to acceleration level 2, It is not limited to this.

In addition, when acceleration level 3 is selected in which a current of the first frequency (2.2Mhz) is supplied to the third and fourth electrodes 351c and 351d for 15 s (seconds) in acceleration mode, the acceleration temperature corresponding to acceleration level 3 is maintained. So that the first set time for which step 1 or step 2 is executed may be 45ms (milliseconds), the second set time for which step 1 and step 2 are not executed may be 5ms.

At this time, the current of the second frequency (1.8MHz) and the current of the fourth frequency (1.0MHz) applied to each of the first electrode (351a) and the second electrode (351b), and the third electrode (351c) and the fourth electrode ( 351d) The current of the first frequency (2.2 MHz) and the current of the third frequency (1.4 MHz) applied to each may be supplied with a duty of 90% to maintain the acceleration temperature corresponding to acceleration level 3, It is not limited to this.

As described above, the first RF mode of the skin care device 1 can select any one of acceleration level 1, acceleration level 2, and acceleration level 3, and the first RF mode of step 1 is executed in the 1st RF mode after the acceleration mode. ,The second electrodes (351a, 351b) and the third and fourth electrodes (351c, 351d) of step 2 can each be repeatedly executed in a certain order. The first RF mode can be repeatedly executed for a certain period of time in the order of Step 1 -> Step 2 -> Step 1 -> Step 2. At this time, the total execution time of the 1st RF mode can be set to about 5 minutes for user safety, but is not limited to this.

The skin care device 1 of this embodiment has at least one fifth frequency as the frequency to be used for the four first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d) so as to eliminate muscle pain and activate muscles. For example, the first EMS mode can be executed by setting at least one fifth frequency in the range of 150 Hz (low frequency) or less and setting the execution time in various ways.

The first EMS mode may be automatically executed for a certain period of time from the time the acceleration mode is completed, and execution may be automatically stopped after a certain period of time has elapsed. Additionally, it goes without saying that the first EMS mode can be executed independently regardless of the acceleration mode.

In the first EMS mode, when a current of the fifth frequency is applied to any two of the four first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d) at a set period, current is supplied to the other two electrodes. It can be executed separately as step 3, step 4, and step 5. The skin care device 1 of this embodiment is explained by setting the fifth frequency to 50Hz, but is not limited thereto.

For example, in step 3 of the first EMS mode, a current of the fifth frequency (50 Hz) may be applied to each of the third electrode (351c) and the fourth electrode (351d), and at this time, the first electrode (351a) and the fourth electrode (351d) may be applied. No current is applied to the second electrode (351b). In step 4 of the first EMS mode, a current of the fifth frequency (50 Hz) can be applied to each of the first electrode (351a) and the fourth electrode (351d), and at this time, the second electrode (351b) and the third electrode (351c). ), no current is applied. In step 5 of the first EMS mode, a current of the fifth frequency (50 Hz) can be applied to each of the first electrode (351a) and the second electrode (351b), and at this time, the third electrode (351c) and the fourth electrode (351d) ), no current is applied.

The fifth frequency applied to each of step 3, step 4, and step 5 of the first EMS mode may be the same, but is not limited to this.

The above-mentioned first EMS mode can be executed by varying the stimulation time in each of step 3, step 4, and step 5 where the fifth frequency is applied. The first EMS mode can be operated by the user selecting one of stimulation level 1, stimulation level 2, and stimulation level 3 using the function button 27. Stimulation level 1, stimulation level 2, and stimulation level 3 are classified according to stimulation time. Stimulation level 1 has the shortest stimulation time, and stimulation level 3 has the longest stimulation time. For example, stimulation level 1 may be set to 10us (microsec), stimulation level 2 may be set to 12us (microsec), and stimulation level 3 may be set to 14us (microsec), but are not limited thereto.

In addition, in the first EMS mode, the first, second, third, and fourth electrodes 351a, 351b, 351c, and 351d are applied for a certain period of time, for example, 20 ms (milliseconds), between step 3, step 4, and step 5. Ensure that a current with a frequency of 0Hz is supplied (current is off).

One of the two third and fourth electrodes (351c, 351d), two first and fourth electrodes (351a, 351d), or two first and second electrodes (351a, 351b) to which a current of the fifth frequency is applied. A negative current may be applied to one electrode, and a positive current may be applied to the other electrode. For example, of the two electrodes, a negative current may be applied to the former electrode and a positive current may be applied to the latter electrode.

In the first EMS mode, when executed with step 3, step 4 and step 5 are not executed, when executed with step 4, step 3 and step 5 are not executed, and when executed with step 5, step 3 and step 4 are not executed.

As described above, the first EMS mode of the skin care device 1 can select any one of stimulation level 1, stimulation level 2, and stimulation level 3, and the third and fourth electrodes of step 3 executed in the first EMS mode ( 351c, 351d), the first and fourth electrodes 351a and 351d of step 4, and the first and second electrodes 351a and 351b of step 5, respectively, may be repeatedly executed in a certain order. The first EMS mode of the skin care device 1 may be repeatedly executed for a certain period of time in the following order: Step 3 -> Step 4 -> Step 5 -> Step 4 -> Step 3 -> Step 4 -> Step 5 -> Step 4 . At this time, the total execution time of the first EMS mode can be set to about 5 minutes for user safety, but is not limited to this.

The RF+EMS mode of the skin care device 1 may be a mode that combines the 2nd RF mode and the 2nd EMS mode. The RF+EMS mode can be implemented by executing the 2nd RF mode and the 2nd EMS mode simultaneously, adding the 2nd EMS mode while executing the 2RF mode, or additionally executing the 2RF mode while executing the 2nd EMS mode.

In the RF+EMS mode of the skin care device 1 of this embodiment, the 2nd RF mode is executed on any two of the four first, second, third, and fourth electrodes (351a, 351b, 351c, and 351d), and the other two electrodes. The second EMS mode can be executed on the two electrodes by dividing it into step 6, step 7, and step 8.

In step 6 of the RF+EMS mode, the first electrode (351a) and the second electrode (351b) may be executed in the 2RF mode, and the third electrode (351c) and the fourth electrode (351d) may be executed in the 2EMS mode. .

Currents of the first frequency (2.2 MHz) and the second frequency (1.8 MHz) can be alternately applied to each of the first electrode (351a) and the second electrode (351b) running in the 2RF mode with a period of less than 1 second. there is.

Each of the third electrode (351c) and the fourth electrode (351d) running in the second EMS mode is 10us (microsec), 12us (microsec), or 14us (depending on the selection of stimulation level 1, stimulation level 2, or stimulation level 3). A current of the fifth frequency (50 Hz) may be applied for a period of microsec).

In step 6 of the RF+EMS mode described above, the 2nd RF mode differs only in the frequency applied to the first electrode 351a and the second electrode 351b compared to step 1 of the 1st RF mode described above, and the remaining conditions are may be the same or similar, and accordingly, detailed description will be omitted here to avoid redundant description.

In addition, in step 6 of the RF+EMS mode, the electrodes and conditions may be the same or similar in the second EMS mode compared to step 3 of the above-described first EMS mode, and thus redundant description is avoided here. For this purpose, detailed description will be omitted.

In step 7 of the RF+EMS mode, the second electrode (351b) and the third electrode (351c) can be run in the 2RF mode, and the first electrode (351a) and the fourth electrode (351d) can be run in the 2nd EMS mode. .

Currents of the second frequency (1.8 MHz) and the third frequency (1.4 MHz) can be applied alternately at a period of less than 1 second to each of the second electrode (351b) and the third electrode (351c) running in the 2RF mode. there is.

Each of the first electrode (351a) and the fourth electrode (351d) running in the second EMS mode is 10us (microsec), 12us (microsec), or 14us (depending on the selection of stimulation level 1, stimulation level 2, or stimulation level 3). A current of the fifth frequency (50 Hz) may be applied for a period of microsec).

In step 7 of the RF + EMS mode described above, the 2nd RF mode differs only in the frequency applied to the second electrode 351b compared to step 1 of the 1st RF mode described above, and the remaining conditions may be the same or similar. , Compared to step 2 of the above-described first RF mode, only the frequency applied to the third electrode 351c is different, and the remaining conditions may be the same or similar. Accordingly, detailed description is omitted here to avoid redundant description. I decided to do it.

In addition, in step 7 of the RF+EMS mode, the electrodes executed in the second EMS mode may be the same and the conditions may be the same or similar compared to step 4 of the above-described first EMS mode, so duplicate description is avoided here. For this purpose, detailed description will be omitted.

In step 8 of the RF+EMS mode, the third electrode (351c) and the fourth electrode (351d) may be executed in the 2nd RF mode, and the first electrode (351a) and the second electrode (351b) may be executed in the 2nd EMS mode. .

Currents of the third frequency (1.4MHz) and fourth frequency (1.0MHz) can be alternately applied to each of the third electrode (351c) and fourth electrode (351d) running in the 2RF mode with a period of less than 1 second. there is.

Each of the first electrode (351a) and the second electrode (351b) running in the second EMS mode is 10us (microsec), 12us (microsec), or 14us (depending on the selection of stimulation level 1, stimulation level 2, or stimulation level 3). A current of the fifth frequency (50 Hz) may be applied for a period of microsec).

In Step 8 of the RF+EMS mode described above, the 2nd RF mode differs only in the frequency applied to the third electrode 351c and the fourth electrode 351d compared to Step 2 of the 1st RF mode described above, and the remaining conditions are may be the same or similar, and accordingly, detailed description will be omitted here to avoid redundant description.

In addition, in step 8 of the RF+EMS mode, the electrodes and conditions performed in the second EMS mode may be the same and the conditions may be the same or similar compared to step 5 of the above-described first EMS mode, thus avoiding redundant description here. For this purpose, detailed description will be omitted.

As described above, in the RF+EMS mode of the skin care device 1, the 2nd RF mode of step 6, step 7, and step 8 may be executed to correspond to step 1 and step 2 of the above-described first RF mode. In the RF+EMS mode of the skin care device 1, steps 6, 7, and 8 of the second EMS mode may be executed to correspond to steps 3, 4, and 5 of the above-described first EMS mode.

Steps 6, 7, and 8 in the RF+EMS mode of this skin care device 1 are the execution processes of steps 1 and 2 of the above-described first RF mode and steps 3, step 4, and The execution process of Step 5 can be executed complexly. However, the execution order may be different.

That is, in RF+EMS mode, the RF mode can select any one of acceleration level 1, acceleration level 2, and acceleration level 3, and the first and second electrodes (351a, 351b), the second and third electrodes (351b and 351c) of step 7, and the third and fourth electrodes (351c and 351d) of step 8 may be repeatedly executed in a certain order. In RF+EMS mode, the 2nd RF mode can be repeatedly executed for a certain period of time in the following order: Step 6 -> Step 7 -> Step 8 -> Step 7 -> Step 6 -> Step 7 -> Step 8 -> Step 7.

In addition, the 3rd and 4th electrodes (351c, 351d) of Step 6, the 1st and 4th electrodes (351a, 351d) of Step 7, and the 1st and 2nd electrodes of Step 8 ( 351a, 351b) Each can be executed repeatedly in a certain order. In the RF+EMS mode, the second EMS mode can be repeatedly executed for a certain period of time in the following order: Step 6 -> Step 7 -> Step 8 -> Step 7 -> Step 6 -> Step 7 -> Step 8 -> Step 7.

As a result of testing the skin care device 1 of this example on the human body in RF mode, the following results were obtained.

1. Skin wrinkle analysis

① Wrinkles around the eyes; Compared to before using the product, the overall size, depth, and maximum depth parameters decreased significantly immediately after using the product and after 4 weeks (p<0.05), and the reduction rate was 8.87% to 14.52%.

② Nasolabial folds; Compared to before using the product, the overall size and depth parameters decreased significantly immediately after and 4 weeks after using the product, and the width parameter decreased significantly after 4 weeks of using the product (p<0.05), and the reduction rate was 3.43% to 10.08%.

③ Forehead wrinkles; Compared to before using the product, the overall size and depth parameters decreased significantly immediately after using the product and after 4 weeks (p<0.05), and the reduction rate was 2.14% to 10.08%.

④Glabellar wrinkles; Compared to before using the product, the Overall size, Depth and Maximum depth parameters decreased significantly immediately and 4 weeks after using the product, and the Width parameter decreased significantly (p<0.05) after 4 weeks of using the product, with a reduction rate of 1.85% to 11.78%. It was.

2. Skin pore analysis

Compared to before using the product, the Volume, Count, and Density parameters decreased significantly at 2 and 4 weeks after using the product (p<0.05), and the reduction rate was 6.79% to 14.66%.

3. Skin brightness analysis

When compared to before using the product, the Hyper concentration parameter of the pigmented area significantly decreased 2 and 4 weeks after using the product, and the Affected area parameter decreased significantly after 4 weeks of using the product (p<0.05). The reduction rates were 7.44% and 11.16% for the Hyper concentration parameter and 14.07% for the Affected area parameter, respectively.

4. Analysis of elastic recovery of skin pressure marks

Compared to before using the product, the elastic recovery of skin pressure marks significantly increased after 2 and 4 weeks of using the product (p<0.05), and the increase rates were 12.78% and 21.82%, respectively.

5. Skin moisture (density) analysis

Compared to before using the product, skin moisture (density) significantly increased immediately after and 4 weeks after using the product (p<0.05), and the increase rates were 226.79% and 12.07%, respectively.

6. Skin density analysis

Compared to before using the product, skin density significantly increased 2 and 4 weeks after using the temporary product (p<0.05), and the increase rates were 8.60% and 17.90%, respectively.

7. Skin lifting analysis

Compared to before using the product, the volume of the double chin area decreased significantly immediately and 4 weeks after using the product (p<0.05), and the reduction rates were 10.14% and 21.74%, respectively.

In addition, Figure 11 (a) shows heat energy being transferred to the dermis layer by the skin care device 1 of the present invention, and Figure 11 shows heat energy being transferred to the dermis layer by the skin care device of the comparative invention. As can be seen in (b), thermal energy is transferred evenly from the upper dermis layer to the lower dermal layer in the skin care device 1 of the present invention, but heat energy is transferred in the skin care device of the comparative invention to the upper dermis layer. The present invention was excellent in terms of heat energy transfer efficiency, such that heat energy was not transferred to the lower dermal layer when heat energy was transferred. Here, the skin care device of the comparative invention uses fixed RF frequency electrodes and changes the frequency in time units of 2 seconds or more to simultaneously transmit energy to the epidermis and lower dermal layers, and is one of the products currently on the market.

The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

In addition, although the above description has been made focusing on the examples, this is only an example and does not limit the present invention, and those skilled in the art will understand the above examples without departing from the essential characteristics of the present embodiment. You will be able to see that various modifications and applications are possible. For example, each component specifically shown in the examples can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

1: Skin care device 2: Body
21: Front cover 22: Rear cover
23: recess 24: battery
25: charging terminal 26: switch
27: Function button 28: Indicator lamp
29: 1st terminal 3: head part
31: housing 311: border
312: Cover 313a to 313g: 1st to 7th holes
32: substrate 33: light emitting device
34: second terminal 35: electrode portion
351a to 351d: first to fourth electrodes
352a to 352g: first to seventh contact portions
353a to 353f: first to sixth connecting portions
354a to 354d: first to fourth contact portions

Claims (18)

A body including a first terminal; and
A head portion connected to the body and detachable from the body,
The head part,
A housing including a receiving space therein;
a substrate disposed within the housing;
an electrode portion disposed within the housing and on the substrate; and
A second terminal provided at the bottom of the substrate and electrically connected to the first terminal of the body,
The electrode part,
a first electrode disposed at the center of the head portion;
a second electrode surrounding the first electrode and spaced at equal intervals;
a third electrode surrounding the second electrode and disposed at equal intervals; and
It includes a fourth electrode that surrounds the third electrode and is spaced apart at equal intervals,
The first, second, third, and fourth electrodes operate in the first RF mode,
The first RF mode is a skin care device that alternately applies different frequencies to any two of the first, second, third, and fourth electrodes at a set period so that high-frequency heat energy is evenly transmitted from the upper dermis layer to the lower dermis layer. . According to paragraph 1,
The first RF mode is,
The frequencies to be used for the first, second, third, and fourth electrodes are set to four frequencies in the range of 1MHz to 3MHz (high frequency),
A skin care device wherein the four frequencies are set in order from longest to shortest frequency: first frequency, second frequency, third frequency, and fourth frequency. According to paragraph 2,
The first frequency is set to 2.2Mhz,
The second frequency is set to 1.8 MHz,
The third frequency is set to 1.4 MHz,
A skin care device wherein the fourth frequency is set to 1.0 MHz. According to paragraph 2,
Further comprising an acceleration mode for rapid heat transfer to the skin before operating the first RF mode,
The acceleration mode is,
It is operated by selecting one of acceleration level 1, acceleration level 2, and acceleration level 3, which are set in order of acceleration time from short to long,
A current of the first frequency is supplied to the third and fourth electrodes with a duty of 100%,
A skin care device in which a negative current is applied to one of the third and fourth electrodes, and a positive current is applied to the other electrode. According to paragraph 4,
The first RF mode is,
It is automatically executed for a certain period of time from the time the acceleration mode is completed, and execution is automatically stopped after a certain period of time has elapsed.
When currents of any two of the first, second, third, and fourth frequencies are alternately applied to any two of the first, second, third, and fourth electrodes at a set period, current is not supplied to the other two electrodes. A skin care device that is divided into Step 1 and Step 2 in a non-invasive way. According to clause 5,
The first RF mode is,
In Step 1, currents of the second frequency and the fourth frequency are alternately applied several to dozens of times to each of the first and second electrodes at a period of less than 1 second during a first set time,
In step 2, currents of the first frequency and the third frequency are alternately applied several to dozens of times at a period of less than 1 second to each of the third and fourth electrodes during the first set time,
A negative current is applied to one of the two first and second electrodes or the two third and fourth electrodes, and a positive current is applied to the other electrode,
The step 1 and the step 2 are performed alternately with a gap of a second set time when current is not supplied to each of the first, second, third, and fourth electrodes. According to clause 6,
The first set time becomes longer from acceleration level 1 to acceleration level 3,
The second set time becomes relatively shorter from acceleration level 1 to acceleration level 3. According to clause 5,
The first RF mode is,
A skin care device that is repeatedly executed for a certain period of time in the order of step 1 -> step 2 -> step 1 -> step 2 after the acceleration mode. According to paragraph 1,
The first, second, third and fourth electrodes operate in the 1st EMS mode instead of the 1st RF mode,
The first EMS mode is,
When the current of the fifth frequency is applied to any two of the first, second, third, and fourth electrodes at a set period, the current is not supplied to the other two electrodes, and is divided into step 3, step 4, and step 5. and runs,
In step 3, a current of the fifth frequency is applied to each of the third and fourth electrodes,
In step 4, a current of the fifth frequency is applied to each of the first and fourth electrodes,
In step 5, a current of the fifth frequency is applied to each of the first and second electrodes,
Skin care in which a negative current is applied to one of the two third and fourth electrodes, the two first and fourth electrodes, or the two first and second electrodes, and a positive current is applied to the other electrode. device. According to clause 9,
The first EMS mode is,
Select and execute any one of stimulation level 1, stimulation level 2, and stimulation level 3, which are set in order from shortest to longest stimulation time so that the stimulation time is different in each of step 3, step 4, and step 5,
A skin care device that prevents current from being supplied to each of the first, second, third and fourth electrodes for a certain period of time between step 3, step 4 and step 5. According to clause 9,
The first EMS mode is,
A skin care device that repeatedly performs step 3 -> step 4 -> step 5 -> step 4 -> step 3 -> step 4 -> step 5 -> step 4 in this order for a certain period of time. . According to paragraph 1,
The first, second, third, and fourth electrodes operate in RF+EMS mode instead of the first RF mode,
The RF+EMS mode is,
The 2nd RF mode is executed on any two of the first, second, third, and fourth electrodes, and the second EMS mode is executed on the other two electrodes, and is divided into step 6, step 7, and step 8. Skin care device. According to clause 12,
In step 6, the first and second electrodes are run in the second RF mode, and the third and fourth electrodes are run in the second EMS mode,
In step 7, the 2nd and 3rd electrodes are run in the 2nd RF mode, and the 1st and 4th electrodes are run in the 2nd EMS mode,
In step 8, the third and fourth electrodes are run in the second RF mode, and the first and second electrodes are run in the second EMS mode. In section 13,
The 2nd RF mode is,
The frequencies to be used for the first, second, third, and fourth electrodes are set to four frequencies in the range of 1MHz to 3MHz (high frequency),
The four frequencies are set as 1st frequency, 2nd frequency, 3rd frequency, and 4th frequency in order from longest to shortest frequency,
The second EMS mode is,
A skin care device that sets the frequency to be used for the first, second, third, and fourth electrodes to one fifth frequency in the low frequency range. According to clause 14,
Further comprising an acceleration mode for rapid heat transfer to the skin before operating the second RF mode,
The acceleration mode is,
It is operated by selecting one of acceleration level 1, acceleration level 2, and acceleration level 3, which are set in order of acceleration time from short to long,
A current of the first frequency is supplied to the third and fourth electrodes with a duty of 100%,
A skin care device in which a negative current is applied to one of the third and fourth electrodes, and a positive current is applied to the other electrode. According to clause 15,
The 2nd RF mode is,
In step 6, currents of the first frequency and the second frequency are alternately applied to each of the first and second electrodes several to tens of times with a period of less than 1 second during the first set time,
In step 7, currents of the second frequency and the third frequency are alternately applied several to dozens of times at a period of less than 1 second to each of the second and third electrodes during the first set time,
In step 8, currents of the third frequency and the fourth frequency are alternately applied several to dozens of times at a period of less than 1 second to each of the third and fourth electrodes during the first set time,
A negative current is applied to one of the two first and second electrodes, the two second and third electrodes, or the two third and fourth electrodes, and a positive current is applied to the other electrode,
Step 6, step 7, and step 8 are alternately performed with a gap of a second set time during which current is not supplied to each of the first, second, third, and fourth electrodes,
The first set time becomes longer from acceleration level 1 to acceleration level 3,
The second set time becomes relatively shorter from acceleration level 1 to acceleration level 3,
The second EMS mode is,
In step 6, a current of the fifth frequency is applied to each of the third and fourth electrodes,
In step 7, a current of the fifth frequency is applied to each of the first and fourth electrodes,
In step 8, a current of the fifth frequency is applied to each of the first and second electrodes,
Skin care in which a negative current is applied to one of the two third and fourth electrodes, the two first and fourth electrodes, or the two first and second electrodes, and a positive current is applied to the other electrode. device. According to clause 16,
The second EMS mode is,
Select and execute any one of stimulation level 1, stimulation level 2, and stimulation level 3, which are set in order from shortest to longest stimulation time so that the stimulation time is different in each of step 6, step 7, and step 8,
A skin care device that prevents current from being supplied to each of the first, second, third, and fourth electrodes for a certain period of time between step 6, step 7, and step 8. According to clause 12,
The RF+EMS mode is,
In the second RF mode and the second EMS mode, step 6 -> step 7 -> step 8 -> step 7 -> step 6 -> step 7 -> step 8 -> step 7 in this order. A skin care device that runs repeatedly for a certain period of time.

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