JP2020137720A - Beauty equipment and its pathway formation mechanism - Google Patents

Abstract

A path-forming mechanism capable of efficiently infiltrating beauty ingredients of cosmetics into the skin and a beauty device equipped with the same. A beauty device includes a path forming mechanism (100). The passage forming mechanism 100 comprises a first electrode 110 and a second electrode 120 that form an electric field inside the skin so as to form a passage through which beauty ingredients of cosmetics permeate. The first electrode 110 is an electrode to which a higher potential than the second electrode 120 is applied. The first electrode 110 and the second electrode 120 are comb-teeth electrodes, and the teeth 112 of the first electrode 110 and the teeth 122 of the second electrode 120 are arranged alternately in the first direction. The number of teeth 112 on the first electrode 110 is greater than the number of teeth 122 on the second electrode 120 . At least one of the width of the teeth 122 of the first electrode 110 and the width of the teeth 122 of the second electrode 120 is wider than the distance between the teeth 112 of the first electrode 110 and the teeth 122 of the second electrode 120 . [Selection drawing] Fig. 5

Description

The present invention relates to a beauty device that allows cosmetic ingredients to permeate into the skin and a pathway forming mechanism thereof.

A beauty device that forms an electric field inside the skin and allows the beauty ingredients of cosmetics to penetrate into the skin is known. Patent Document 1 describes an example of a conventional beauty device.

Japanese Unexamined Patent Publication No. 2004-411434

For beauty devices, it is expected that the penetration of beauty ingredients into the skin will be improved. According to the findings obtained by the inventor of the present application, the distance between electrodes and the width of electrodes affect the permeability of cosmetic ingredients into the skin. Patent Document 1 does not pay particular attention to this point.
An object of the present invention is to provide a pathway forming mechanism capable of efficiently permeating a cosmetic ingredient of cosmetics into the skin, and a beauty device including the same.

The path forming mechanism of the beauty device according to one embodiment of the present invention is a path forming mechanism of a beauty device including a first electrode and a second electrode that form an electric field inside the skin so as to form a path through which beauty components of cosmetics permeate. The first electrode is an electrode to which a higher potential is applied than the second electrode, the first electrode and the second electrode are comb tooth electrodes, and the teeth of the first electrode and the second electrode. The teeth of the electrodes are arranged so as to be alternately arranged in the first direction, the number of teeth of the first electrode is larger than the number of teeth of the second electrode, the width of the teeth of the first electrode and the second. At least one of the widths of the electrode teeth is wider than the distance between the first electrode tooth and the second electrode tooth.

The pathway forming mechanism according to the present invention and the beauty device including the same can efficiently permeate the beauty ingredients of cosmetics into the skin.

Front view of the beauty device of the embodiment. The first side view of the beauty apparatus of FIG. The second side view of the beauty apparatus of FIG. An exploded perspective view of the path forming mechanism of FIG. The plan view of the 1st electrode and the 2nd electrode of FIG. FIG. 5 is a cross-sectional view showing the internal structure of the head of FIG. The block diagram of the beauty device of FIG. The flowchart which shows an example of the permeation method of a beauty ingredient. The graph which shows an example of the result of the 1st test. The graph which shows an example of the result of the 2nd test. The plan view of the first modification of the path formation mechanism. The plan view of the 2nd modification of the path formation mechanism.

(Example of possible forms of path formation mechanism, etc.)
The path forming mechanism according to one embodiment of the present invention is a path forming mechanism of a beauty device including a first electrode and a second electrode that form an electric field inside the skin so as to form a path through which beauty components of cosmetics permeate. The first electrode is an electrode to which a higher potential is applied than the second electrode, the first electrode and the second electrode are comb tooth electrodes, and the teeth of the first electrode and the teeth of the second electrode. Are arranged alternately in the first direction, the number of teeth of the first electrode is larger than the number of teeth of the second electrode, the width of the teeth of the first electrode and the teeth of the second electrode. At least one of the widths of is wider than the distance between the tooth of the first electrode and the tooth of the second electrode.
According to the above-mentioned pathway formation mechanism, the beauty ingredient of cosmetics can be efficiently permeated into the skin.

In an example of the path forming mechanism, the tooth width of the first electrode and the tooth width of the second electrode are constant.
According to the path forming mechanism, the uniformity of the electric field formed inside the skin is increased.

In one example of the path forming mechanism, the interval is constant.
According to the path forming mechanism, the uniformity of the electric field formed inside the skin is increased.

In an example of the path forming mechanism, at least one of the tooth width of the first electrode and the tooth width of the second electrode is more than 1 times and 2.5 times or less of the interval.
According to the above-mentioned pathway formation mechanism, the penetration of cosmetic ingredients into the skin is improved.

In an example of the path forming mechanism, at least one of the tooth width of the first electrode and the tooth width of the second electrode is more than twice and 2.5 times or less the interval.
According to the above-mentioned pathway formation mechanism, the penetration of cosmetic ingredients into the skin is further improved.

In an example of the path forming mechanism, at least one of the width of the comb teeth of the first electrode and the width of the comb teeth of the second electrode is more than 1.8 times and less than 2.2 times the interval.
According to the above-mentioned pathway formation mechanism, the penetration of cosmetic ingredients into the skin is further improved.

The beauty device according to one embodiment of the present invention includes any one of the above-mentioned pathway forming mechanisms.
According to the above-mentioned pathway formation mechanism, the beauty ingredient of cosmetics can be efficiently permeated into the skin.

(Embodiment)
The beauty device 10 shown in FIG. 1 has a beauty function of promoting percutaneous absorption or mucosal absorption of cosmetic ingredients by utilizing the action of a living body generated by electric energy. The beauty device 10 is mainly used for permeating the beauty component of cosmetics applied to the skin surface of a target part of the human body into the skin. Beauty ingredients include, for example, macromolecules. Specific examples of beauty ingredients include hyaluronic acid, collagen, and vitamin C derivatives. The cosmetic function includes a relaxing function that forms an electric field inside the skin to lower the barrier function of the skin, and a penetrating function that allows a weak electric current to flow inside the skin to promote the penetration of beauty components into the skin. A weak electric current is a current having a magnitude that does not give a strong stimulus to the living body. The relaxation function is realized, for example, by using electroporation. The osmotic function is realized, for example, by using iontophoresis.

The barrier function of the skin is provided by the lamellar structure of the skin. The lamellar structure of the skin is mainly composed of keratinocytes and intercellular lipids. In the relaxation function, for example, an electric pulse is applied to an electrode arranged on the surface of the skin to form a pulse electric field inside the skin. The action of the pulsed electric field relaxes the lamellar structure of the skin and reduces the barrier function of the skin. In skin with reduced barrier function, pores are formed between the cells that make up the skin. The pores between cells form a pathway (hereinafter referred to as "penetration pathway") for permeating cosmetic ingredients from the surface of the skin to the inside of the skin. The beauty ingredient penetrates deep inside the skin through the penetration pathway.

The beauty device 10 includes a pathway forming mechanism 100. The path forming mechanism 100 imparts a relaxing function to the beauty device 10. The path forming mechanism 100 includes a first electrode 110 and a second electrode 120. The first electrode 110 and the second electrode 120 form an electric field inside the skin so that a permeation path is formed inside the skin. A higher potential is applied to one of the first electrode 110 and the second electrode 120 than the other. In one example, a higher potential is applied to the first electrode 110 than to the second electrode 120. The path forming mechanism 100 forms a pulsed electric field by periodically generating an electric pulse. The electrical pulse is, for example, a DC pulse or an AC pulse.

The beauty device 10 further includes a main body 20 and a penetration promoting mechanism 200. The main body 20 constitutes the structural basis of the beauty device 10. In one example, the main body 20 is configured to be portable with one hand. The main body 20 includes a case 21. The case 21 is made of a material having electrical insulation. A space is formed inside the case 21 so that various elements constituting the beauty device 10 can be arranged. The case 21 includes a handle 22 and a head 23. The handle 22 is configured so that it can be gripped with one hand. The head 23 is provided on the upper part of the handle 22. The surface of the case 21 includes a first surface 21A and a second surface 21B. The first surface 21A is located on one side of the central surface of the case 21. The second surface 21B is located on the other side of the central surface of the case 21.

The path forming mechanism 100 is provided in the main body 20. The structural relationship between the path forming mechanism 100 and the main body 20 can be arbitrarily selected. In the first example, the path forming mechanism 100 is removable from the main body 20. In the second example, the path forming mechanism 100 is integrated with the main body 20. As shown in FIG. 2, the path forming mechanism 100 is provided on the first surface 21A of the head 23. In a state where the path forming mechanism 100 is arranged on the skin surface, an electric field is formed inside the skin by applying a voltage to each of the electrodes 110 and 120. The state in which the pathway forming mechanism 100 is arranged on the skin surface is a state in which the pathway forming mechanism 100 is in contact with the skin surface so that an electric field is appropriately formed inside the skin by the electrodes 110 and 120, or a state on the skin surface. It is in a state of being placed in the vicinity.

The permeation promoting mechanism 200 imparts a permeation function to the beauty device 10. The permeation promoting mechanism 200 is provided in the main body 20. The structural relationship between the permeation promoting mechanism 200 and the main body 20 can be arbitrarily selected. In the first example, the penetration promoting mechanism 200 is removable from the main body 20. In the second example, the permeation promoting mechanism 200 is integrated with the main body 20. The permeation promoting mechanism 200 includes a third electrode 210 and a fourth electrode 220. The third electrode 210 and the fourth electrode 220 are electrodes that apply a voltage to the skin so that a weak current flows inside the skin. As shown in FIG. 3, the third electrode 210 is provided on the second surface 21B of the head 23. As shown in FIG. 2, the fourth electrode 220 is provided on the first surface 21A of the handle 22.

The third electrode 210 includes an electrode surface 210A that applies a voltage to the skin. The third electrode 210 is provided on the head 23 so that the electrode surface 210A is exposed to the outside of the case 21. A sheet can be attached to the third electrode 210. The sheet is configured to be impregnated with cosmetics. The sheet is, for example, a non-woven fabric. The fourth electrode 220 includes an electrode surface 220A that applies a voltage to the skin. The fourth electrode 220 is provided on the handle 22 so that the electrode surface 220A is exposed to the outside of the case 21.

When a voltage is applied to the skin by the penetration promoting mechanism 200, the third electrode 210 is arranged on the skin surface, and the fourth electrode 220 comes into contact with the palm of the hand holding the handle 22. The state in which the third electrode 210 is arranged on the skin surface means that the third electrode 210 is in contact with the skin surface so that a voltage can be appropriately applied to the skin by the penetration promoting mechanism 200, or the third electrode 210 is in contact with the skin. It is in a state of being placed near the surface.

When the third electrode 210 is arranged on the skin surface and the voltage is applied to the electrodes 210 and 220 while the fourth electrode 220 is in contact with the palm, a potential difference is generated between the third electrode 210 and the skin. A weak electric current flows inside the skin. In this state, the electric repulsive force acting between the same kind of electric charges or the electroosmotic flow promotes the permeation of the beauty ingredient into the skin through the permeation pathway. Promoting the penetration of beauty ingredients means that the action of permeating beauty ingredients into the skin is strengthened in a state where the beauty ingredients can permeate from the surface of the skin to the inside of the skin.

The details of the path forming mechanism 100 will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, the path forming mechanism 100 further includes a substrate 130 and a cover 140 in addition to the electrodes 110 and 120, respectively. The substrate 130 is made of a material having electrical insulation. The substrate 130 is, for example, a flexible printed circuit board. The substrate 130 includes a base, a coverlay, and an adhesive layer. The base, coverlay, and adhesive layer are made of electrically insulating material. In one example, the base and coverlay are made of polyimide. The adhesive layer is formed of an epoxy resin, an acrylic resin, or a polyimide resin adhesive material. The base and coverlay are laminated. The coverlay covers the base. The adhesive layer is formed between the base and the cover lay so as to bond the base and the cover lay. The first electrode 110 and the second electrode 120 are patterns of copper foil formed on the base.

The cover 140 is laminated on the substrate 130. The cover 140 is made of a material having electrical insulation. One example is polyethylene terephthalate. The form of the cover 140 is, for example, a sheet. The cover 140 electrically insulates the substrate 130 from the skin, thus protecting the skin from electrical irritation. The specific configuration of the cover 140 can be arbitrarily selected. In the first example, as shown in FIG. 4, one cover 140 is provided on the substrate 130. One cover 140 covers a region corresponding to each electrode 110, 120 on the substrate 130. In the second example, a plurality of covers 140 are provided on the substrate 130 along the substrate 130. One or more first covers 140 cover the region of the substrate 130 corresponding to the first electrode 110. One or more of the second covers 140 cover the region of the substrate 130 corresponding to the second electrode 120.

As shown in FIG. 5, the electrodes 110 and 120 of the path forming mechanism 100 are comb tooth electrodes. The first electrode 110 includes a base portion 111 and a plurality of teeth 112. The shape of the base portion 111 is a long strip in the first direction. A plurality of teeth 112 project from the base portion 111 in the second direction. The second electrode 120 includes a base portion 121 and a plurality of teeth 122. The shape of the base portion 121 is a long strip in the first direction. A plurality of teeth 122 project from the base portion 121 in the second direction. The second direction intersects the first direction on the flat substrate 130 or on the flat substrate 130. In one example, the second direction is orthogonal to the first direction.

The shape of the teeth 112 of the first electrode 110 can be arbitrarily set. In one example, the shape of the tooth 112 is a strip that is long in the second direction. The central axis of the tooth 112 is parallel to the second direction. The shape of each tooth 112 is the same. The tooth 112 includes a straight portion 112A parallel to the second direction and a tip portion 112B provided on the side opposite to the base portion 111 with respect to the straight portion 112A. The shape of the tip portion 112B is a rounded shape. The length of the tooth 112 in the first direction is referred to as "the width W1 of the tooth 112". When the width W1 of the tooth 112 in the second direction is not constant, the width W1 of the tooth 112 is defined by the typical width of the tooth 112. A typical width of the tooth 112 will be illustrated. In the first example, the typical width of the tooth 112 is the width of the main part of the tooth 112. In the second example, the typical width of the tooth 112 is the average of the widths of the plurality of parts of the tooth 112. In the third example, the typical width of the tooth 112 is the width of the narrowest portion of the tooth 112. In the fourth example, the typical width of the tooth 112 is the width of the widest portion of the tooth 112. In the illustrated example, the straight portion 112A constitutes the main portion of the tooth 112. The width of the straight portion 112A is constant. The width of the straight portion 112A corresponds to the typical width of the teeth 112. The widths W1 of each tooth 112 are equal to each other.

The shape of the teeth 122 of the second electrode 120 can be set arbitrarily. In one example, the shape of the teeth 122 is a strip that is long in the second direction. The central axis of the tooth 122 is parallel to the second direction. The shape of each tooth 122 is the same. The tooth 122 includes a straight portion 122A parallel to the second direction and a tip portion 122B provided on the side opposite to the base portion 121 with respect to the straight portion 122A. The shape of the tip portion 122B is a rounded shape. The length of the tooth 122 in the first direction is referred to as "the width W2 of the tooth 122". When the width W2 of the tooth 122 in the second direction is not constant, the width W2 of the tooth 122 is defined by the typical width of the tooth 122. A typical width of the tooth 122 will be illustrated. In the first example, the typical width of the tooth 122 is the width of the main part of the tooth 122. In the second example, the typical width of the tooth 122 is the average of the widths of the plurality of parts of the tooth 122. In the third example, the typical width of the tooth 122 is the width of the narrowest portion of the tooth 122. In the fourth example, the typical width of the tooth 122 is the width of the widest portion of the tooth 122. In the illustrated example, the straight portion 122A constitutes the main portion of the tooth 122. The width of the straight portion 122A is constant. The width of the straight portion 122A corresponds to the typical width of the teeth 122. The widths W2 of each tooth 122 are equal to each other.

The number of teeth 112 of the first electrode 110 and the number of teeth 122 of the second electrode 120 can be arbitrarily set. In the first example, the number of teeth 112 of the first electrode 110 and the number of teeth 122 of the second electrode 120 are different. In the second example, the number of teeth 112 of the first electrode 110 is larger than the number of teeth 122 of the second electrode 120. In the third example, as shown in FIG. 5, the number of teeth 112 of the first electrode 110 is one more than the number of teeth 122 of the second electrode 120. In the fourth example, the number of teeth 122 of the second electrode 120 is larger than the number of teeth 112 of the first electrode 110. In the fifth example, the number of teeth 122 of the second electrode 120 is one more than the number of teeth 112 of the first electrode 110. In the sixth example, the number of teeth 112 of the first electrode 110 is equal to the number of teeth 122 of the second electrode 120.

The relationship between the total area of the first electrode 110 and the total area of the second electrode 120 on the substrate 130 can be arbitrarily set. In the first example, the total area of the first electrode 110 and the total area of the second electrode 120 are different. In the second example, the total area of the first electrode 110 is larger than the total area of the second electrode 120. In the third example, the total area of the second electrode 120 is larger than the total area of the first electrode 110. The main factor that causes the difference in the total area in the first to third examples is, for example, the difference between the number of teeth 112 of the first electrode 110 and the number of teeth 122 of the second electrode 120. In the fourth example, the total area of the first electrode 110 and the total area of the second electrode 120 are equal. According to the findings of the inventor of the present application, when a high potential is applied to the first electrode 110 having a large total area, a strong electric field is likely to be formed inside the skin. This contributes to strengthening the action of lowering the barrier function of the skin.

The teeth 112 of the first electrode 110 and the teeth 122 of the second electrode 120 are alternately arranged in the first direction. Of the teeth 112 of the first electrode 110, the teeth 112 provided at both ends in the first direction are referred to as "end teeth 113". Of the teeth 112 of the first electrode 110, each tooth 112 other than each end tooth 113 is arranged between one end tooth 113 and the other end tooth 113 in the first direction. Each tooth 122 of the second electrode 120 is arranged between one end tooth 113 and the other end tooth 113 in the first direction.

Each tooth 112 other than each end tooth 113 of the first electrode 110 is arranged between the tooth 122 and the tooth 122 of the second electrode 120, respectively. The tip portion 112B of each tooth 112 other than one end tooth 113 faces the base portion 121 of the second electrode 120. Each tooth 122 of the second electrode 120 is arranged between the tooth 112 and the tooth 112 of the first electrode 110, respectively. The tip 122B of each tooth 122 of the second electrode 120 faces the base 111 of the first electrode 110. In one example, the shape of the teeth 112 of the first electrode 110 and the shape of the teeth 122 of the second electrode 120 are the same. This contributes to increasing the uniformity of the electric field formed inside the skin.

Since the plurality of teeth 112 and the plurality of teeth 122 are provided on the substrate 130, the electric field formed by the electrodes 110 and 120 is distributed in a plane shape, and the electric field is formed in a wide range inside the skin. Since the other plurality of teeth 112 and the plurality of teeth 122 are arranged between one end tooth 113 and the other end tooth 113, an electric field outside the region corresponding to the path forming mechanism 100 inside the skin. The spread is suppressed by each end tooth 113, and an electric field is efficiently formed inside the skin.

A non-conductive portion 131 that insulates these teeth 112 and 122 is provided between the teeth 112 of the first electrode 110 and the teeth 122 of the second electrode 120 that are adjacent to each other in the first direction. The non-conductive portion 131 is composed of, for example, an adhesive layer of the substrate 130. In one example, the distance D between adjacent teeth 112 and 122 in the first direction is constant in the second direction. However, the portion corresponding to the tip portion 112B of the tooth 112 and the portion corresponding to the tip portion 122B of the tooth 122 are excluded. The constant interval D contributes to increasing the uniformity of the electric field formed inside the skin.

The relationship between the width W1 of the tooth 112 and the width W2 of the tooth 122 and the interval D can be arbitrarily set. The interval D is the distance between the edge of the tooth 112 of the first electrode 110 and the edge of the tooth 122 of the second electrode 120 adjacent to each other in the first direction. In the first example, the interval D is narrower than one of the width W1 of the teeth 112 of the first electrode 110 and the width W2 of the teeth 122 of the second electrode 120. In the second example, the spacing D is narrower than both the width W1 of the teeth 112 and the width W2 of the teeth 122. In the third example, the interval D is equal to one of the width W1 of the teeth 112 of the first electrode 110 and the width W2 of the teeth 122 of the second electrode 120. In the fourth example, the spacing D is equal to both the width W1 of the teeth 112 of the first electrode 110 and the width W2 of the teeth 122 of the second electrode 120. In the fifth example, the interval D is wider than one of the width W1 of the teeth 112 of the first electrode 110 and the width W2 of the teeth 122 of the second electrode 120. In the sixth example, the spacing D is wider than both the width W1 of the teeth 112 of the first electrode 110 and the width W2 of the teeth 122 of the second electrode 120. The width W1 of the tooth 112 of the first electrode 110 in the first to sixth examples is at least one of the typical widths of the tooth 112 that can be defined by a plurality of methods. The width W2 of the tooth 122 of the second electrode 120 in the first to sixth examples is at least one of the typical widths of the tooth 122 that can be defined by a plurality of methods. The spacing D in the first to sixth examples can be defined by a plurality of methods and the edge of the portion of the tooth 112 that defines at least one of the representative widths of the teeth 112 that can be defined by the plurality of methods. The distance to the edge of the portion of the tooth 122 that defines at least one of the typical widths of the tooth 122.

The ratio of the width W1 of the teeth 112 of the first electrode 110 or the width W2 of the teeth 122 of the second electrode 120 to the interval D is referred to as a “width interval ratio”. The width interval ratio is obtained by dividing the width W1 of the teeth 112 of the first electrode 110 or the width W2 of the teeth 122 of the second electrode 120 by the interval D. The width interval ratio can be set arbitrarily. When the interval D is equal to the width W1 of the teeth 112, the width interval ratio defined by the interval D and the width W1 of the teeth 112 is 1. When the spacing D is narrower than the width W1 of the teeth 112, the width spacing ratio defined by the spacing D and the width W1 of the teeth 112 is greater than 1. When the spacing D is wider than the width W1 of the teeth 112, the width spacing ratio defined by the spacing D and the width W1 of the teeth 112 is less than 1. When the interval D is equal to the width W2 of the teeth 122, the width interval ratio defined by the interval D and the width W2 of the teeth 122 is 1. When the spacing D is narrower than the width W2 of the teeth 122, the width spacing ratio defined by the spacing D and the width W2 of the teeth 122 is greater than 1. When the spacing D is wider than the width W2 of the teeth 122, the width spacing ratio defined by the spacing D and the width W2 of the teeth 122 is less than 1.

A specific example of the width interval ratio will be illustrated. In the first example, the width interval ratio is 1 or more and 3 or less. That is, at least one of the width W1 of the tooth 112 and the width W2 of the tooth 122 is 1 times or more and 3 times or less the interval D. In this example, the penetration of the beauty ingredient into the skin is improved as compared with the case where the width interval ratio is less than 1. Further, as compared with the case where the width interval ratio exceeds 3, the interval D suitable for manufacturing the electrodes 110 and 120 is secured, and the manufacturability of the path forming mechanism 100 is improved. In the second example, the width interval ratio is more than 1 and 2.5 or less. That is, at least one of the width W1 of the tooth 112 and the width W2 of the tooth 122 is more than 1 times and 2.5 times or less the interval D. In this example, the penetration of the beauty ingredient into the skin is improved as compared with the first example. In the third example, the width interval ratio is more than 2 and 2.5 or less. That is, at least one of the width W1 of the tooth 112 and the width W2 of the tooth 122 is more than twice and 2.5 times or less the interval D. In this example, the penetration of the beauty ingredient into the skin is improved as compared with the second example. In the third example, the width interval ratio is more than 1.8 and less than 2.2. That is, at least one of the width W1 of the tooth 112 and the width W2 of the tooth 122 is more than 1.8 times and less than 2.2 times the interval D. In this example, the permeability of the beauty ingredient into the skin is further improved as compared with the first example, the manufacturability of the pathway forming mechanism 100 is improved as compared with the first to third examples, and the manufacturing cost is increased. Reduce.

As shown in FIG. 4, the path forming mechanism 100 further includes a mounting portion 150. The mounting portion 150 includes a frame 151 and a conductive portion 152. The frame 151 is configured to be attached to and detached from the main body 20. The frame 151 is made of a material having an electrically insulating property. The laminated substrate 130 and cover 140 are attached to the frame 151. When the mounting portion 150 is mounted on the main body 20, the shapes of the substrate 130 and the cover 140 are a flat shape or a curved shape that softly pushes the skin. The frame 151 is formed with an opening 151A that exposes a region corresponding to each of the electrodes 110 and 120 in the cover 140. When the pathway forming mechanism 100 is arranged on the skin surface, the electrodes 110 and 120 face the skin surface via the cover 140 and the opening 151A.

The conductive portion 152 is provided on the surface of the frame 151. The conductive portion 152 is provided in the frame 151 so as to surround a part or all of the periphery of each of the electrodes 110 and 120 exposed through the space of the opening 151A. The formation location of the conductive portion 152 can be arbitrarily selected. In another example, the conductive portion 152 is provided on the cover 140 so as to surround a part or all of the periphery of each of the electrodes 110 and 120.

The conductive portion 152 is electrically insulated from each of the electrodes 110 and 120. The conductive portion 152 is formed of a material having conductivity. One example is indium. The conductive portion 152 is a paint coated on the surface of the frame 151. The paint contains a large number of small pieces of metal and at least one of a large number of fine metal particles. At least one of the metal pieces and metal particles contained in the paint is dispersed in the paint. According to the findings of the inventor of the present application, when the path forming mechanism 100 is arranged on the skin surface, the electrodes 110 and 120 are surrounded by the conductive portions 152, so that the electric field formed by the electrodes 110 and 120 has a conductive portion. 152 has an effect, and the action of lowering the barrier function of the skin is strengthened.

As shown in FIG. 6, the beauty device 10 further includes a temperature adjusting unit 30. The temperature adjusting unit 30 is provided on the head 23. The temperature adjusting unit 30 assists the formation of the permeation pathway and the permeation of the cosmetic ingredient into the skin by adjusting the temperature of the skin. The temperature adjusting unit 30 includes at least one of a heating unit 31 that raises the temperature of the skin and a cooling unit 32 that lowers the temperature of the skin. In one example, the temperature control unit 30 includes both a heating unit 31 and a cooling unit 32.

The heating unit 31 is used to reduce the barrier function of the skin. When an electric field is formed inside the skin by the pathway forming mechanism 100, the heating unit 31 adjusts the temperature of the skin so that the formation of the permeation pathway is promoted. When the temperature of the skin rises while an electric field is formed inside the skin, the action of lowering the barrier function of the skin becomes stronger. This increases the rate at which the barrier function of the skin declines and contributes to increasing the efficiency of penetration of cosmetic ingredients into the skin.

The cooling unit 32 is used to maintain a state in which the barrier function of the skin is reduced. When a weak current flows inside the skin by the penetration promoting mechanism 200, the cooling unit 32 adjusts the temperature of the skin so that the beauty component permeates the inside of the skin. When the temperature of the skin decreases while the barrier function of the skin is reduced, the fluidity of lipids in the lamellar structure of the skin decreases, and the recovery rate of the relaxed lamellar structure decreases. This reduces the rate at which the barrier function of the skin returns to its original state, maintains the state in which the beauty ingredient can penetrate into the skin, and contributes to increasing the efficiency of the penetration of the beauty ingredient into the skin.

The heating unit 31 directly or indirectly heats the skin. In one example, the heating unit 31 heats the skin via the pathway forming mechanism 100. The heating unit 31 heats the electrodes 110 and 120, respectively. By heating the electrodes 110 and 120, the cover 140 covering the electrodes 110 and 120 is heated, and the skin surface in contact with the cover 140 or the skin surface located in the vicinity of the cover 140 is heated. The specific configuration of the heating unit 31 can be arbitrarily selected. In the first example, the heating unit 31 is configured separately from the cooling unit 32. The heating unit 31 includes a heater. The heater is thermally connected directly or indirectly to each of the electrodes 110, 120. The heater heats the electrodes 110 and 120 by Joule heat. In the second example, as shown in FIG. 6, the heating unit 31 is integrally configured with the cooling unit 32. The heating unit 31 includes a heat generating surface 33A of the Peltier element 33. The heating surface 33A is directly or indirectly thermally connected to each of the electrodes 110 and 120.

The cooling unit 32 heats the skin directly or indirectly. In one example, the cooling unit 32 cools the skin via the third electrode 210 of the penetration promoting mechanism 200. The cooling unit 32 absorbs the heat of the third electrode 210. When the third electrode 210 is endothermic, the skin surface in contact with the third electrode 210 or the skin surface located in the vicinity of the third electrode 210 is endothermic. The specific configuration of the cooling unit 32 can be arbitrarily selected. In the first example, the cooling unit 32 is configured separately from the heating unit 31. The cooling unit 32 includes a heat sink and an electric fan. The heat sink is thermally connected directly or indirectly to the third electrode 210. The electric fan cools the heat sink. In the second example, as shown in FIG. 6, the cooling unit 32 is integrally configured with the heating unit 31. The cooling unit 32 includes a heat absorbing surface 33B of the Peltier element 33. The endothermic surface 33B is directly or indirectly thermally connected to the third electrode 210.

In the form in which the temperature adjusting unit 30 includes the Peltier element 33, the heating of the path forming mechanism 100 and the cooling of the third electrode 210 are performed at the same time. This contributes to improved efficiency with respect to energy use. Since the Peltier element 33 constitutes the heating unit 31 and the cooling unit 32, the temperature adjusting unit 30 is downsized and the beauty device 10 is lightened.

The temperature adjusting unit 30 further includes a heat conducting unit 34. The heat conductive portion 34 is provided on the head 23. The heat conductive portion 34 includes a first heat conductive portion 34A and a second heat conductive portion 34B. The first heat conduction portion 34A is provided between the heating portion 31 and the path forming mechanism 100. The first heat conductive portion 34A thermally connects the heating portion 31 and the path forming mechanism 100. The heat of the heating unit 31 flows to the electrodes 110 and 120 of the path forming mechanism 100 via the first heat conduction unit 34A. The second heat conduction portion 34B is provided between the cooling portion 32 and the third electrode 210. The second heat conductive portion 34B thermally connects the cooling portion 32 and the third electrode 210. The heat of the third electrode 210 flows to the cooling unit 32 via the second heat conduction unit 34B. The specific configuration of the heat conductive portion 34 can be arbitrarily selected. In one example, the heat conductive portion 34 includes a metal member having high heat conductivity or a heat pipe.

As shown in FIG. 7, the beauty device 10 further includes an operation unit 40, a detection unit 50, a notification unit 60, a storage unit 70, a control device 80, and a power supply unit 90. The power supply unit 90 supplies electric power to an electrical element provided in the beauty device 10. The power supply unit 90 includes a power supply unit. The power supply unit supplies the electric power of the commercial AC power source or the electric power of the battery provided in the beauty device 10 to the electric element. The path forming mechanism 100, the permeation promoting mechanism 200, the temperature adjusting unit 30, the detecting unit 50, the notification unit 60, the storage unit 70, and the control device 80 operate by the electric power supplied from the power supply unit 90. As shown in FIG. 3, the operation unit 40 is provided on the main body 20. The operation unit 40 includes a switch for switching the power of the beauty device 10 on and off, a switch for selecting the operation mode of the beauty device 10, and the like. Depending on the operation of the operation unit 40, the on state in which power is supplied from the power supply unit 90 to the electrical element and the off state in which power is not supplied are switched.

The detection unit 50 detects a state related to the beauty device 10. In one example, the detection unit 50 includes a first detection unit 51 and a second detection unit 52. Each of the detection units 51 and 52 transmits a detection signal including the detection result to the control device 80. The first detection unit 51 detects whether or not the pathway forming mechanism 100 is arranged on the skin surface. When the path forming mechanism 100 is arranged on the skin surface, the first detection unit 51 transmits the first detection signal to the control device 80. In one example, the first detection unit 51 includes a contact detection sensor. The contact detection sensor detects that the path forming mechanism 100 is in contact with the skin surface or that the path forming mechanism 100 is arranged in the vicinity of the skin surface. The specific configuration of the contact detection sensor can be arbitrarily selected. In one example, the contact detection sensor is a sensor that detects contact by using a change in capacitance, a sensor that detects contact by using a change in the electrical resistance value of a pressure-sensitive conductive rubber, or a light receiving element is a light emitting element. It is a sensor that detects contact by utilizing the change in the amount of light received from.

The second detection unit 52 detects whether or not the third electrode 210 of the penetration promoting mechanism 200 is arranged on the skin surface. When the third electrode 210 is arranged on the skin surface, the second detection unit 52 transmits the second detection signal to the control device 80. In one example, the second detection unit 52 includes a contact detection sensor. The contact detection sensor detects that the third electrode 210 is in contact with the skin surface or that the third electrode 210 is arranged in the vicinity of the skin surface. The specific configuration of the contact detection sensor can be arbitrarily selected in the same manner as the contact detection sensor of the first detection unit 51.

The notification unit 60 outputs information about the beauty device 10. The notification unit 60 outputs information according to the signal received from the control device 80. The information output method by the notification unit 60 can be arbitrarily selected. In one example, the notification unit 60 outputs at least one of visual information, auditory information, and cutaneous sensory information. The visual information includes, for example, visible light. The means for outputting visual information is, for example, at least one of a lamp and a display. Auditory information includes, for example, sounds with frequencies in the audible range. A means for outputting auditory information is, for example, a speaker. Cutaneous sensory information includes, for example, contact with objects perceived by the skin. Contact with vibrating objects is also included in the cutaneous sensory information. The means for outputting the cutaneous sensory information is, for example, a vibrator. When the pathway forming mechanism 100 or the penetration promoting mechanism 200 is arranged on the skin surface and it is difficult for the user to visually recognize the main body 20, it is preferable that at least one of the skin sensory information and the auditory information is output by the notification unit 60.

The control device 80 is configured to be able to control the control target provided in the beauty device 10. In one example, the controlled object includes a path forming mechanism 100, a permeation promoting mechanism 200, a temperature adjusting unit 30, and a notification unit 60. The control device 80 controls the control target by referring to the signal received from the operation unit 40, the signal received from the detection unit 50, the information stored in the storage unit 70, and the like. The storage unit 70 is configured to store various types of information and the like referred to in the control of the control device 80. The storage unit 70 includes, for example, a non-volatile memory and a volatile memory. The control device 80 includes a component that constitutes a circuit that applies a voltage to the path forming mechanism 100, a component that constitutes a circuit that applies a voltage to the penetration promotion mechanism 200, a component that constitutes a circuit that allows a current to flow through the temperature adjusting unit 30, and It is equipped with a processor that executes operations related to control. The parts, processors, and the like provided in the control device 80 constitute a plurality of functional units. In one example, the plurality of functional units include a determination unit 81, a timing unit 82, a first voltage control unit 83, a second voltage control unit 84, a temperature control unit 85, and a notification control unit 86.

The determination unit 81 determines the state of the beauty device 10 with reference to the detection signal received from the detection unit 50. When the determination unit 81 receives the first detection signal from the first detection unit 51, it determines that the path forming mechanism 100 is arranged on the skin surface, and transmits the first determination signal to the first voltage control unit 83 and the timing unit 82. Send to. When the determination unit 81 receives the second detection signal from the second detection unit 52, it determines that the third electrode 210 is arranged on the skin surface, and transmits the second determination signal to the second voltage control unit 84 and the timing unit 82. Send to.

The timekeeping unit 82 measures various times with reference to the determination signal received from the determination unit 81. When the time measuring unit 82 receives the ON signal for turning on the power of the beauty device 10 from the operation unit 40, the time measuring unit 82 starts measuring the preparation time. The preparation time indicates the time when the electric current is supplied to the temperature adjusting unit 30 when the beauty device 10 is turned on. When the preparation time reaches the preparation completion time, the timing unit 82 transmits a preparation completion signal to the notification control unit 86. When the preparation time is equal to or longer than the preparation completion time, it can be estimated that the temperature of the path forming mechanism 100 is equal to or higher than the first predetermined temperature. When the temperature of the pathway forming mechanism 100 is equal to or higher than the first predetermined temperature, the action of lowering the barrier function of the skin is preferably promoted.

When the timing unit 82 receives the first detection signal from the determination unit 81, the timekeeping unit 82 starts measuring the first elapsed time. The first elapsed time indicates the duration of time that the pathway forming mechanism 100 is arranged on the skin surface. When the first elapsed time reaches the first predetermined time, the timing unit 82 transmits the first elapsed signal to the first voltage control unit 83 and the notification control unit 86. When the first elapsed time is equal to or longer than the first predetermined time, it can be inferred that the permeation pathway is formed inside the skin by the action of the electric field formed by the pathway forming mechanism 100.

When the timing unit 82 receives the second detection signal from the determination unit 81, the time measuring unit 82 starts measuring the second elapsed time. The second elapsed time indicates the duration of time that the third electrode 210 is placed on the skin surface. When the second elapsed time reaches the second predetermined time, the timing unit 82 transmits the second elapsed signal to the second voltage control unit 84 and the notification control unit 86. When the second elapsed time is equal to or longer than the second predetermined time, it can be inferred that a certain amount of beauty ingredient has permeated into the skin due to the action of the weak electric current flowing by the permeation promoting mechanism 200.

The first voltage control unit 83 controls the voltage applied to the electrodes 110 and 120 of the path forming mechanism 100. When the first voltage control unit 83 receives the first detection signal from the determination unit 81, the first voltage control unit 83 starts applying the voltage to each of the electrodes 110 and 120. The first voltage control unit 83 applies a voltage higher than that of the second electrode 120 to the first electrode 110. In one example, the first voltage control unit 83 periodically applies a DC pulse voltage to the electrodes 110 and 120 of the path forming mechanism 100. The duty ratio and frequency of the DC pulse voltage are set by the first voltage control unit 83. The duty ratio is the ratio of the on-time and off-time of the pulse output in a fixed cycle. The duty ratio is obtained by dividing the on-time in one cycle of the pulse by one cycle. The storage unit 70 stores the first voltage control information. The first voltage control information includes information on one or more duty cycles and information on one or more frequencies. The first voltage control unit 83 sets the duty ratio and frequency with reference to the first voltage control information. When the first voltage control information includes information on a plurality of duty ratios, the first voltage control unit 83 sets the duty ratios according to the first selection condition. When the first voltage control information includes information on a plurality of frequencies, the first voltage control unit 83 sets the frequencies according to the second selection condition. The first selection condition and the second selection condition are set according to, for example, the operation of the operation unit 40.

The duty ratio can be set arbitrarily. In the first example, the duty ratio is more than 50% and less than 85%. In this example, the permeability of the beauty ingredient into the skin is improved as compared with the case where the duty ratio is 50% and the case where the duty ratio is less than 50%. In the second example, the duty ratio is 75% or more and 85% or less. In this example, the permeability of the beauty ingredient into the skin is improved as compared with the case where the duty ratio is 50% and the case where the duty ratio is more than 50% and less than 75%.

The second voltage control unit 84 controls the voltage applied to the electrodes 210 and 220 of the permeation promoting mechanism 200. When the second voltage control unit 84 receives the second detection signal from the determination unit 81, the second voltage control unit 84 starts applying the voltage to the electrodes 210 and 220. The second voltage control unit 84 applies a voltage higher than that of the fourth electrode 220 to the third electrode 210. The voltage applied to each of the electrodes 210 and 220 (hereinafter referred to as “applied voltage”) and the time during which the voltage is applied (hereinafter referred to as “applied time”) are set by the second voltage control unit 84. The storage unit 70 stores the second voltage control information. The second voltage control information includes information on one or more applied voltages and information on one or more applied times. The second voltage control unit 84 sets the applied voltage and the applied time with reference to the second voltage control information. When the second voltage control information includes information on a plurality of applied voltages, the second voltage control unit 84 sets the applied voltage according to the third selection condition. When the second voltage control information includes information on a plurality of application times, the second voltage control unit 84 sets the application time according to the fourth selection condition. The third selection condition and the fourth selection condition are set according to, for example, the operation of the operation unit 40.

The temperature control unit 85 controls the current supplied to the temperature control unit 30. In one example, the temperature control unit 85 controls the temperature adjustment unit 30 according to the operation signal received from the operation unit 40. Specifically, when the temperature control unit 85 receives an operation signal for setting the beauty device 10 in the ON state, the temperature control unit 85 supplies a predetermined current to the temperature adjustment unit 30. When the temperature control unit 85 receives the operation signal for setting the beauty device 10 to the off state, the temperature control unit 85 stops the supply of the current to the temperature adjustment unit 30.

The notification control unit 86 controls the notification unit 60. The notification control unit 86 causes the notification unit 60 to output information according to the signal received from the timing unit 82. In one example, the notification control unit 86 causes the notification unit 60 to output various types of information as follows. When the notification control unit 86 receives the preparation completion signal from the timing unit 82, the notification control unit 86 causes the notification unit 60 to output information prompting the placement of the path forming mechanism 100 on the skin surface of the target site. When the notification control unit 86 receives the first progress signal from the timing unit 82, the notification control unit 86 causes the notification unit 60 to output information prompting the placement of the third electrode 210 of the penetration promoting mechanism 200 on the skin surface of the target site. When the notification control unit 86 receives the second progress signal from the timing unit 82, the notification control unit 86 causes the notification unit 60 to output information indicating that one set of the permeation method of the beauty ingredient is completed.

A method of permeating the beauty ingredient using the beauty device 10 will be described with reference to FIG. The permeation method of beauty ingredients is divided into, for example, three phases. The first phase is a phase in which the pathway forming mechanism 100 is heated by the heating unit 31 so that the temperature of the pathway forming mechanism 100 becomes a temperature suitable for promoting the deterioration of the barrier function of the skin. The second phase is a phase in which after the completion of the first phase, the pathway forming mechanism 100 is arranged on the skin surface, the barrier function of the skin is lowered by the action of an electric field, and the permeation pathway is formed inside the skin. The third phase is a phase in which the permeation promoting mechanism 200 is arranged on the skin surface after the completion of the second phase, and the permeation of the beauty ingredient into the skin is promoted by the potential difference between the permeation promoting mechanism 200 and the skin. An example of a specific procedure of the permeation method of beauty ingredients is shown below.

In step S11, the handle 22 of the main body 20 is grasped by one hand. The fourth electrode 220 of the penetration promoting mechanism 200 comes into contact with the palm. In step S12, the operation unit 40 is operated so that the power of the beauty device 10 is turned on. The heating of the path forming mechanism 100 by the temperature adjusting unit 30 and the cooling of the third electrode 210 of the permeation promoting mechanism 200 are started. The timekeeping of the preparation time by the timekeeping unit 82 is started. In step S13, the notification unit 60 outputs information indicating that the first phase is completed when the preparation time reaches the preparation completion time.

In step S21, the pathway forming mechanism 100 is arranged on the skin surface of the target portion of the human body to permeate the beauty ingredients of cosmetics. In step S22, the first detection unit 51 detects that the path forming mechanism 100 is arranged on the skin surface, a DC pulse voltage is applied to the electrodes 110 and 120 of the path forming mechanism 100, and the time measuring unit 82 first. Timekeeping of elapsed time begins. A pulsed electric field corresponding to the DC pulse voltage is formed inside the skin, the barrier function of the skin is lowered by the pulsed electric field, and a permeation path through which the beauty component can permeate is formed inside the skin. Heat flows to the skin from the pathway forming mechanism 100 arranged on the surface of the skin, the skin is heated, and the deterioration of the barrier function due to the relaxation of the lamellar structure of the skin is promoted. This contributes to shortening the time required to shift to the third phase and improving the penetration of the beauty ingredient into the skin. In step S23, the notification unit 60 outputs information indicating that the second phase is completed when the first elapsed time reaches the first predetermined time.

In step S31, the third electrode 210 of the penetration promoting mechanism 200 is arranged on the skin surface. Cosmetics are applied to the skin surface during the period from before the pathway forming mechanism 100 is arranged in step S21 to before the third electrode 210 is arranged in step S31. In one example, cosmetics are applied to the skin surface just before the third electrode 210 is placed in step S31. In step S32, the second detection unit 52 detects that the third electrode 210 is arranged on the skin surface, a voltage is applied to the electrodes 210 and 220 of the permeation promoting mechanism 200, and the second elapsed time by the time measuring unit 82. Timekeeping is started. By applying a voltage, a weak electric current flows inside the skin, and the penetration of beauty ingredients into the skin is promoted. The heat of the skin is absorbed by the third electrode 210 arranged on the surface of the skin, the lamellar structure of the skin is gradually cooled, the fluidity of lipids is reduced, and the recovery rate of the relaxed lamellar structure is reduced. The state in which the barrier function of the skin is lowered is maintained for a long time, and the state in which the penetration of beauty ingredients into the skin is promoted is also maintained. In step S33, the notification unit 60 outputs information indicating that the third phase is completed when the second elapsed time reaches the second predetermined time.

(Example)
The first test and the second test for evaluating the permeability of the beauty ingredient regarding the permeation method of the beauty ingredient using the beauty apparatus 10 were carried out. In the first test, the relationship between the width interval ratio of the pathway formation mechanism 100 and the permeability of the beauty ingredient was confirmed. In the second test, the relationship between the duty ratio of the pathway forming mechanism 100 and the permeability of the beauty ingredient was confirmed.

The details of the first test will be described. The conditions of the first test are as follows. The beauty ingredient of cosmetics is hyaluronic acid. The target site of the subject to penetrate the beauty ingredient is the inside of the forearm. The sample applied to the skin surface of the target site is an aqueous hyaluronic acid solution. The area of the skin surface to which the sample is applied is a square with each side of 2 cm. The molecular weight of hyaluronic acid in an aqueous hyaluronic acid solution is 5000 to 10000. The concentration of the hyaluronic acid aqueous solution is 0.3 mg / mL. The level of the width interval ratio is 5 levels. Specifically, the level of the width interval ratio is 0.2, 0.5, 1, 2, 2.5. The duty ratio level of the DC pulse voltage is one level. Specifically, the duty ratio of the DC pulse voltage is 50%.

The procedure of the first test is as follows. First, the first phase is executed. Next, an aqueous hyaluronic acid solution is applied to the skin surface. Next, the second phase is executed. In the second phase, a DC pulse voltage is applied to the electrodes 110 and 120 of the path forming mechanism 100 arranged on the skin surface. The voltage applied to each of the electrodes 110 and 120 is 37V. The frequency of the DC pulse voltage is 1 kHz. Next, the third phase is executed. In the third phase, a voltage is applied to the third electrode 210 arranged on the skin surface and the fourth electrode 220 in contact with the palm. The voltage applied to each of the electrodes 210 and 220 is 10V. The time for which the voltage is applied is 6 seconds. Next, the keratin of the skin is collected. The sampling method is the tape stripping method. The area of skin collected is 22 mm in diameter. Next, the collected keratin is leached into a measurement buffer and reacted with an ELISA kit for quantifying hyaluronic acid. Next, the amount of hyaluronic acid is quantified by absorbance analysis.

FIG. 9 shows the relationship between the width interval ratio in the first test and the permeation ratio of the quantified amount of hyaluronic acid. The X-axis of the graph shows the width spacing ratio. The Y-axis of the graph shows the permeation ratio. The permeation ratio is a value obtained by dividing the amount of hyaluronic acid corresponding to an arbitrary width interval ratio by the amount of hyaluronic acid when the width interval ratio is 0.5. When the width interval ratio is 1, the penetration ratio is 1. When the width interval ratio is less than 0.5, the penetration ratio is lower than when the width interval ratio is 0.5. When the width interval ratio is larger than 0.5, the penetration ratio is increased as compared with the case where the width interval ratio is 0.5. When the width interval ratio is 2 or 2.5, the permeation ratio is greatly increased as compared with the case where the width interval ratio is 0.5.

As the lamellar structure of the skin relaxes due to the electrical vibration caused by the electric pulse, the pulse electric field formed by the pathway formation mechanism 100 reaches not only the vicinity of the skin surface but also the deep inside of the skin, and hyaluron into the skin. It is presumed that the penetration of the acid aqueous solution is preferably promoted. When the teeth 112 and 122 of the electrodes 110 and 120, which are comb-tooth electrodes, are alternately arranged and the portion where the teeth 112 and 122 face each other is formed in a wide range, the narrower the interval D, the deeper the electric field inside the skin. Is presumed to arrive. According to the results of the first test, it was confirmed that the permeability of hyaluronic acid was improved when the interval D was narrower than the width W1 of the tooth 112 or the width W2 of the tooth 122. It is presumed that the wide width W1 of the tooth 112 or the wide width W2 of the tooth 122 increases the amount of electric charge stored in the portion of the substrate 130 on which the electrodes 110 and 120 are provided so that the teeth 112 and 122 face each other. Will be done.

The details of the second test will be described. The conditions of the second test are as follows. The beauty ingredient of cosmetics is hyaluronic acid. The target site of the subject to penetrate the beauty ingredient is the inside of the forearm. The sample applied to the skin surface of the target site is an aqueous hyaluronic acid solution. The area of the skin surface to which the sample is applied is a square with each side of 2 cm. The molecular weight of hyaluronic acid in an aqueous hyaluronic acid solution is 5000 to 10000. The concentration of the hyaluronic acid aqueous solution is 0.3 mg / mL. The level of the width interval ratio is one level. Specifically, the width interval ratio is 0.5. The duty ratio level of the DC pulse voltage is 9 levels. Specifically, the duty ratio of the DC pulse voltage is 0%, 10%, 20%, 30%, 50%, 75%, 85%, 95%, 100%. The procedure of the second test is the same as that of the first test.

FIG. 10 shows the relationship between the duty ratio and the permeation ratio obtained in the second test. The X-axis of the graph shows the duty ratio. The Y-axis of the graph shows the permeation ratio of the quantified amount of hyaluronic acid. The permeation ratio is a value obtained by dividing the amount of hyaluronic acid corresponding to an arbitrary duty ratio by the amount of hyaluronic acid when the duty ratio is 50%. When the duty ratio is 50%, the penetration ratio is 1. When the duty ratio is less than 50%, the permeation ratio is lower than when the duty ratio is 50%. When the duty ratio is more than 50% and 85% or less, the permeation ratio is increased as compared with the case where the duty ratio is 50%. When the duty ratio is 75% or more and 85% or less, the permeation ratio is greatly increased as compared with the case where the duty ratio is 50%. When the duty ratio is 90%, the permeation ratio is increased as compared with the case where the duty ratio is 50%, and the permeation ratio is decreased as compared with the case where the duty ratio is more than 50% and 85% or less. When the duty ratio is 95%, the penetration ratio is lower than when the duty ratio is 50%.

According to the second test, it was confirmed that the permeability of the hyaluronic acid aqueous solution was improved when the duty ratio was more than 50% and 85% or less. It was confirmed that when the duty ratio was 75% or more and 85% or less, the permeability of the hyaluronic acid aqueous solution was greatly improved. When the duty ratio is 0% or 100%, no electrical vibration is applied to the lamellar structure of the skin, so it is presumed that the action of relaxing the lamellar structure cannot be obtained. Considering this point, the preferable duty ratio for relaxing the lamellar structure can be considered to be 50%, which is between 0% and 100%. However, the results of the second test suggest that the action of relaxing the lamellar structure is stronger when the duty ratio is more than 50% and 85% or less than when the duty ratio is 50%. Under a constant DC voltage, it is presumed that the behavior of the lamellar structure with respect to electrical vibration differs between the vicinity of the skin surface and the deep part inside the skin. When the duty ratio is 50%, the electric field formed by the DC pulse voltage may exert a strong relaxing action on the lamellar structure near the skin surface and a strong relaxing action on the deep lamellar structure inside the skin. Can not. When the duty ratio is more than 50% and 85% or less, the relaxing action of the electric field formed by the DC pulse voltage on the lamella structure near the skin surface is weaker than that when the duty ratio is 50%, but the electric field is weakened. The relaxing action on the deep lamella structure inside the skin is stronger than when the duty ratio is 50%. It is presumed that this contributes to the improvement of the permeability of hyaluronic acid.

(Modification example)
The beauty device and its path forming mechanism shown in the above embodiment are an example of the beauty device and its path forming mechanism according to the present invention. The above embodiments do not limit the present invention. The beauty device and the pathway forming mechanism thereof according to the present invention may take a form different from the form exemplified in the above-described embodiment. One example thereof is a form in which a part of the configuration of the embodiment is replaced, changed, or omitted, or a new configuration is added to the embodiment.

The configurations of the electrodes 110 and 120 of the path forming mechanism 100 can be arbitrarily set. FIG. 11 shows a first modification of the electrodes 110 and 120, respectively. The first electrode 110 includes a pair of base portions 111, a plurality of teeth 112, and a connecting portion 114. The pair of base portions 111 are parallel to the first direction. One foundation portion 111 and the other foundation portion 111 are arranged in the second direction with a predetermined interval. The connecting portion 114 is parallel to the second direction. The connecting portion 114 connects one base portion 111 and the other base portion 111. A plurality of teeth 112 project from each of the base portions 111. The tip portion 112B of the tooth 112 protruding from one base portion 111 and the tip portion 112B of the tooth 112 protruding from the other base portion 111 face each other with a predetermined interval in the second direction. The second electrode 120 includes a base portion 121 and a plurality of teeth 122. The base portion 121 is arranged between the tip portion 112B of the tooth 112 protruding from one base portion 111 and the tip portion 112B of the tooth 112 protruding from the other base portion 111. A plurality of teeth 122 project from the base portion 121 toward each of the one base portion 111 and the other base portion 111.

FIG. 12 shows a second modification of the electrodes 110 and 120, respectively. The first electrode 110 is annular. The second electrode 120 is arranged inside the first electrode 110. The second electrode 120 is circular. The first electrode 110 and the second electrode 120 are arranged concentrically. One first electrode 110 and one second electrode 120 arranged inside the first electrode 110 form a pair of electrodes. The path forming mechanism 100 includes a plurality of electrode pairs. A plurality of electrode pairs are arranged in each of the first direction and the second direction.

The present invention can be used for beauty devices for various purposes related to beauty and a route forming mechanism thereof.

10: Beauty device 100: Path forming mechanism 110: First electrode 112: Tooth 120: Second electrode 122: Tooth

Claims (7)

It is a path forming mechanism of a beauty device provided with a first electrode and a second electrode that form an electric field inside the skin so as to form a path through which beauty ingredients of cosmetics permeate.
The first electrode is an electrode to which a higher potential is applied than the second electrode.
The first electrode and the second electrode are comb tooth electrodes, and the teeth of the first electrode and the teeth of the second electrode are arranged so as to be alternately arranged in the first direction.
The number of teeth of the first electrode is larger than the number of teeth of the second electrode.
A path forming mechanism for a beauty device in which at least one of the tooth width of the first electrode and the tooth width of the second electrode is wider than the distance between the tooth of the first electrode and the tooth of the second electrode. The path forming mechanism of the beauty device according to claim 1, wherein the width of the teeth of the first electrode and the width of the teeth of the second electrode are constant. The path forming mechanism of the beauty device according to claim 1 or 2, wherein the interval is constant. The beauty apparatus according to any one of claims 1 to 3, wherein at least one of the tooth width of the first electrode and the tooth width of the second electrode is more than 1 times and 2.5 times or less of the interval. Path formation mechanism. The beauty apparatus according to any one of claims 1 to 3, wherein at least one of the tooth width of the first electrode and the tooth width of the second electrode is more than twice and 2.5 times or less the interval. Path formation mechanism. The width of the comb teeth of the first electrode and at least one of the widths of the comb teeth of the second electrode are more than 1.8 times and less than 2.2 times the interval, according to any one of claims 1 to 3. The path forming mechanism of the beauty device described. A beauty device comprising the pathway forming mechanism according to any one of claims 1 to 6.