Skin treatment device

Abstract

The utility model provides a skin treatment device which can be widely applied and effectively applied to small parts and curved skin surfaces and is novel. The skin treatment device includes: a head; and electrodes provided along the head surface and applying electrical stimulation to the skin, the line of intersection of the head surface with a first vertical cross-section including a first direction of the head being curved, and the line of intersection of the head surface with a second vertical cross-section including a second direction perpendicular to the first direction of the head being curved, the intersection line of the head surface and the horizontal cross section is at least partially curved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a skin treatment device. BACKGROUND

[0002] It is known that stimulation generated by a physical stimulation generating circuit (ultrasonic oscillation circuit, low frequency generating circuit, heat generating circuit, light wavelength oscillation circuit) can activate fibroblasts present in the skin, thereby promoting the production of collagen and elastin.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: Japanese Patent Application Publication No. 2023-111562

[0006] Patent Document 2: Japanese Patent No. 7294812

[0007] However, in Patent Document 1 and Patent Document 2, although cosmetic devices having electrode portions are disclosed, there are problems in that it is difficult to act on a wide area and it is difficult to effectively act on small parts and curved skin surfaces SUMMARY

[0008] Therefore, it is an object of the present utility model to provide a novel skin treatment device that can act on a wide area and can effectively act on small parts and curved skin surfaces.

[0009] In one aspect, the present utility model provides a skin treatment device characterized by comprising: a head portion; and an electrode provided along a surface of the head portion to apply electrical stimulation to the skin, wherein an intersection of the surface of the head portion with a first vertical cross section including a first direction of the head portion is curved, an intersection of the surface of the head portion with a second vertical cross section including a second direction perpendicular to the first direction of the head portion is curved, and an intersection of the surface of the head portion with a horizontal cross section is at least partially curved.

[0010] At least a portion of the electrode is visible from a direction perpendicular to the first vertical cross section, at least a portion of the electrode is visible from a direction perpendicular to the second vertical cross section, and at least a portion of the electrode is visible from a direction perpendicular to the horizontal cross section.

[0011] The electrode is provided on the same curved surface as the surface of the head portion.

[0012] A skin treatment device characterized by comprising: a convex head; a first electrode provided along a surface of the head near an apex of the head for applying electrical stimulation to skin; and a second electrode provided along the surface of the head at a position away from the apex of the head for applying electrical stimulation to skin.

[0013] The first electrode and the second electrode are separated from each other by 1 mm or more and less than 70 mm.

[0014] The first electrode and the second electrode are separated from each other by 1 mm or more and less than 70 mm.

[0015] A skin treatment device characterized by comprising: a main body having a first face and a second face opposite to the first face, and a convex head provided at an upper portion of the main body and having a top portion extending in a predetermined direction of the main body; and an electrode provided in the head and at least partially on the first face side of the top portion for applying electrical stimulation to skin.

[0016] The electrode includes a first portion provided on the first face side of the top portion and a second portion provided on the second face side of the top portion, the first portion having an area greater than that of the second portion.

[0017] A skin treatment device characterized by comprising: a head; a first electrode and a second electrode provided in the head for applying electrical stimulation to skin; and a light source configured to emit light between the first electrode and the second electrode and separate from the head.

[0018] The non-light-transmissive member includes a light-transmissive portion through which light emitted from the light source passes, and the head is made of a light-transmissive material.

[0019] A skin treatment device characterized by comprising: a main body having an upper head portion and a lower bottom portion; an electrode provided in the head for applying electrical stimulation to skin; and a light source configured to emit light from the bottom.

[0020] The non-light-transmissive member includes a light-transmissive portion through which light emitted from the light source passes, and the bottom is made of a light-transmissive material.

[0021] A skin treatment device characterized by comprising: a head portion; and a first electrode, a second electrode, and a third electrode provided at the head portion for applying electrical stimulation to the skin, wherein a width between the first electrode and the second electrode is different from a width between the second electrode and the third electrode.

[0022] A skin treatment device characterized by comprising: a head portion; a first electrode, a second electrode, and a third electrode provided at the head portion for applying electrical stimulation to the skin; and a control portion that switches between a first mode and a second mode, wherein the first mode generates an alternating voltage between the first electrode and the second electrode, and the second mode generates an alternating voltage between the second electrode and the third electrode and turns on the first electrode and the second electrode.

[0023] A skin treatment device characterized by comprising: a head portion; a plurality of electrodes provided at the head portion for applying electrical stimulation to the skin; and a control portion that controls which of the plurality of electrodes are turned on.

[0024] The control portion controls which of the plurality of electrodes are turned on in accordance with a user operation.

[0025] A skin treatment device characterized by comprising: a head portion; a first electrode, a second electrode, and a third electrode provided at the head portion for applying electrical stimulation to the skin; wherein the first electrode has a first portion, a second portion, and a third portion electrically connected; the second electrode is provided between the first portion and the second portion; and the third electrode is provided between the second portion and the third portion.

[0026] At least a portion of the first portion, at least a portion of the second portion, at least a portion of the third portion, at least a portion of the second electrode, and at least a portion of the third electrode extend in substantially the same direction.

[0027] A skin treatment device characterized by comprising: a head portion; a first electrode provided at one end side of the head portion for applying electrical stimulation to the skin; and a second electrode provided at the other end side of the head portion opposite to the one end side for applying electrical stimulation to the skin; wherein a distance between a portion of the first electrode closest to the one end side and a portion of the second electrode closest to the other end side is 110 mm or less, and a shortest distance between the first electrode and the second electrode is 50 mm or more.

[0028] The shortest distance between the first electrode and the second electrode is 70 mm or more.

[0029] The effect of the present utility model is as follows.

[0030] The skin treatment device of the present embodiment can act on a wide area and can effectively act on small parts and curved skin surfaces. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a perspective view showing the appearance of the skin treatment device of the present embodiment.

[0032] Figure 2 is a schematic functional block diagram of the skin treatment device of the present embodiment.

[0033] Figure 3A is a schematic front view of the skin treatment device of the present embodiment.

[0034] Figure 3B is a schematic rear view of the skin treatment device of the present embodiment.

[0035] Figure 3C is a schematic top view of the skin treatment device of the present embodiment.

[0036] Figure 3D is a schematic bottom view of the skin treatment device of the present embodiment.

[0037] Figure 3E is a schematic left side view of the skin treatment device of the present embodiment.

[0038] Figure 3F is a schematic right side view of the skin treatment device of the present embodiment.

[0039] Figure 4 is a diagram showing an example of the dimensions of the skin treatment device of the present embodiment.

[0040] Figure 5 is a diagram for explaining the dimensions of the skin treatment device of the present embodiment.

[0041] Figure 6 is a diagram for explaining the dimensions of the skin treatment device of the present embodiment.

[0042] Figure 7A is a diagram showing an example of the method of using the skin treatment device of the present embodiment.

[0043] Figure 7B is a diagram showing an example of the method of using the skin treatment device of the present embodiment.

[0044] Figure 7C is a diagram showing an example of the method of using the skin treatment device of the present embodiment.

[0045] Figure 7D is a diagram showing an example of the method of using the skin treatment device of the present embodiment.

[0046] Figure 7E is a diagram showing an example of a method of using the skin treatment device of the present embodiment.

[0047] Figure 8 is a diagram showing a difference in contact area according to the shape of the electrode.

[0048] Figure 9 is a diagram showing an outline of the control unit of the present embodiment.

[0049] Figure 10 is a diagram showing an example of the hardware structure of the control unit.

[0050] Figure 11 is a yz cross-sectional view of the skin treatment device of the present embodiment.

[0051] Figure 12A is a diagram schematically showing the operation of the control unit 290 in the first operation mode.

[0052] Figure 12B is a diagram schematically showing the operation of the control unit 290 in the second operation mode.

[0053] Figure 12C is a diagram schematically showing the operation of the control unit 290 in the third operation mode.

[0054] Figure 13A is a diagram schematically showing the voltage generated between the electrodes 221 and 222 in the first operation mode.

[0055] Figure 13B is a diagram schematically showing the voltage generated at the electrodes 221, 222, 226, and 227 in the third operation mode.

[0056] Figure 14 is a diagram showing a change in distance between electrodes of another embodiment.

[0057] Figure 15 is a diagram showing a change in distance between electrodes of another embodiment.

[0058] Figure 16 is a diagram showing a change in distance between electrodes of another embodiment.

[0059] Figure 17 is a diagram showing an effect of the present embodiment.

[0060] In the diagram: 200 - skin treatment device, 210 - main body, 211 - front face, 212 - back face, 212a - cover, 213 - bottom, 213a, 213b - protrusions, 213c - recess, 214 - head, 221-227

[0061] - electrode, 230 - heater, 240 ~ 242 - LED, 251 ~ 253 - button, 261 - temperature sensor, 262 - motion sensor, 270 - display unit, 280 - secondary battery, 290 - control unit, 301, 302 - non-light-transmissive member. DETAILED DESCRIPTION

[0062] Hereinafter, the embodiment of the present application will be described in detail based on the drawings.

[0063] (First Embodiment)

[0064] Figure 1 is a perspective view showing the appearance of the skin treatment device 200 of the present embodiment, and is an example of the detailed structure of the skin treatment device. Figure 2 is a schematic functional block diagram of the skin treatment device of the present embodiment. Figures 3A to 3F are a schematic front view, a schematic rear view, a schematic plan view, a schematic bottom view, a schematic left side view, and a schematic right side view of the skin treatment device 200, respectively. Figure 4 is a diagram showing an example of the dimensions of the skin treatment device 200.

[0065] For convenience of explanation, the long axis direction (first direction) of the skin treatment device 200 will be referred to as the x-axis direction or the lateral direction, and sometimes as the right or the left. In addition, the direction perpendicular to the x-axis and the short axis direction (second direction) of the skin treatment device 200 will be referred to as the y-axis direction or the depth direction, and sometimes as the back or the front. In addition, the vertical direction will be referred to as the z-axis direction or the height direction, and sometimes as the upward or the downward.

[0066] The skin treatment device 200 of the present embodiment assumes the form of a cosmetic instrument, and various outputs are applied through a plurality of electrodes that contact the user's skin, to produce cosmetic-related effects on the user's facial skin. However, in a modified example, the skin treatment device 200 can be configured to apply similar cosmetic-related effects to an area other than the user's face, in addition to or instead of the user's face. Here, the various outputs include outputs such as alternating current stimulation, direct current stimulation, ultrasonic waves, LED light irradiation, and the like. In addition, the skin treatment device 200 can also be used to produce effects other than cosmetic-related effects (for example, effects to promote transdermal absorption of drugs).

[0067] The cosmetic-related effects are optional, and include effects such as relaxation, tightening, fat burning, lifting, face slimming, improvement of skin elasticity and gloss, increase of moisturizing effects, and the like, as well as any combination of two or more of the above. The cosmetic-related effects can be quantifiable effects, or unquantifiable effects.

[0068] The skin treatment device 200 of the present embodiment applies various outputs through a plurality of electrodes that contact the user's skin, to produce a cosmetic-related effect on the user's skin.

[0069] The skin treatment device 200 of the present embodiment is a portable device that the user can hold by hand, but can also be applied to a movable device that is movably supported on a fixed device by an arm, a probe, or the like.

[0070] As shown in Figure 2 , the skin treatment device 200 of the present embodiment includes some or all of a main body 210, one or more electrodes (221 to 227), a heater 230, an LED 240, buttons 251 to 253, a temperature sensor 261, a motion sensor 262, a display section 270, a secondary battery 280, and a control section 290. The skin treatment device 200 can also be provided with a detachable cover (not shown) that covers a USB connection terminal.

[0071] As shown in Figures 3A to 3F , the main body 210 includes a front face 211, a back face 212, a bottom 213, and a head 214. In this case, the user can hold the main body 210 with the head 214 attached to a desired portion (application site) of his or her own face or the face of another person (e.g., a patient), to apply various outputs from the skin treatment device 200 to the desired portion.

[0072] The shape of the main body 210 is left-right symmetrical with respect to a vertical cross section (see the one-dot chain line in Figure 3A and Figure 3C ) that passes through the lateral center. As shown in Figure 4 , the main body 210 has a length (width) of about 114.35 mm in the lateral direction, a length of about 43.2 mm in the depth direction, and a height of about 72.2 mm, for example. However, the length in the width direction and the length in the depth direction can be substantially the same. Furthermore, the main body 210 can house some or all of the heater 230, the LED 240, the temperature sensor 261, the motion sensor 262, the secondary battery 280, and the control section 290.

[0073] Each surface of the main body 210 can be a flat surface or a curved surface, but in the present example, each surface is a curved surface. The front face 211 and the back face 212 can also be referred to as side faces of the main body 210. The front face 211 and the back face 212 extend in the x-axis direction in a band shape and are connected to each other at left and right side faces. The buttons 251 to 253 and the display section 270 are arranged on the back face 212. As shown in Figure 3F , a cover 212a that covers a USB terminal for charging the secondary battery 280 is provided near the joint of the right side face. The front face 211 and the back face 212 are made of ABS resin, for example.

[0074] The bottom 213 of the main body 210 is in the shape of an inverted M, and is provided with two downwardly protruding portions 213a, 213b and a recess 213c therebetween. The width of the recess 213c (the distance from the apex of the protruding portion 213a to the apex of the protruding portion 213b) is, for example, 5 mm to 100 mm, preferably 20 mm to 60 mm, and the height (the depth of the recess 213c) is 1 mm to 50 mm, preferably 1 mm to 20 mm. The grip inner diameter should be a size that can be gripped by a user's hand, and, for example, the grip inner diameter of the present embodiment is about 40 mm, which is suitable for a woman to place the base of the thumb on the skin treatment device 200. The bottom 213 can also be used as a gua sha board. The bottom 213 is made of a light-transmitting material such as PET resin. The bottom 213 can also be provided with an electrode that contacts the skin to provide electrical stimulation. The two protruding portions of the inverted M shape and the recess therebetween can be provided not only on the bottom but also on the side surface connecting the head and the bottom. The bottom 213 can be used as a gua sha board and is made of a light-transmitting material such as PET resin, and has a structure for externally irradiating light.

[0075] The head 214 is capable of contacting the skin of a user, and has a shape suitable for contacting the skin of a user. The head 214 has, for example, a curved shape without a flat portion, and in particular, a shape that is curved in three axial directions. The head 214 can be curved as a whole or in part. The head 214 is provided on the upper portion of the main body 210, and the lower portion of the head 214 is connected to the upper portions of the front face 211 and the back face 212. The head 214 can be integrally formed with the front face 211 and the back face 212 or be a separate member. The head 214 has a contact surface that contacts the skin of a user, and the shape of the contact surface can be any shape such as a rectangular shape, a circular shape, an elliptical shape, a polygonal shape, and the like.

[0076] The head 214 can be provided with a plurality of electrodes or electrode groups according to the attributes, and in the present embodiment, the head 214 is provided with electrodes 221 to 227.

[0077] Specifically, as shown in Figure 3A and Figure 3B , when the head 214 is viewed from the near front side to the inner side in the y-axis direction, the surface (upper surface) of the head 214 is curved. In other words, the line at which the surface of the head 214 intersects with the x-z plane (a vertical plane containing the long axis direction) is curved. More specifically, the intersecting line is in the shape of a convex shape (a dotted line in Figure 3A ) with the center as the apex in the horizontal direction, and the height becomes lower as it approaches both ends. Here, the above-mentioned vertical plane containing the long axis direction is the second vertical cross section (the vertical plane in the first direction) of the present application.

[0078] In addition, as shown in Figure 3C and Figure 3DAs shown, when viewing the head 214 from top to bottom along the z-axis, the surface (shape) of the head 214 is curved. In other words, the line where the surface of the head 214 intersects the xy-plane (horizontal plane) is curved. Furthermore, this intersecting line does not need to be entirely curved; only a portion of it is required.

[0079] Furthermore, such as Figure 3E and Figure 3F As shown, when viewing head 214 from left (right) to right (left) along the x-axis, the surface (upper surface) of head 214 is curved. In other words, the line where the surface of head 214 intersects the yz plane (a vertical plane including the minor axis direction) is curved. More specifically, the line of intersection at a predetermined position (see...) Figure 3E and Figure 3F Arrow F in the diagram represents the convex shape of the vertex, and its height decreases as it approaches the ends. Additionally, the vertex extends along the x-axis to form the top (as shown from...). Figure 3A and Figure 3B It can be observed that the top is Figure 3A and Figure 3B The upper surface). Here, the aforementioned vertical plane including the minor axis direction is the second vertical section (the vertical plane in the second direction) of this utility model.

[0080] In this embodiment, electrodes 221-227 are provided along the head 214, but both the portion of the head 214 with electrodes 221-227 and the portion without electrodes can be used as a gua sha board. The head 214 is made of a light-transmitting material such as PET resin.

[0081] Electrodes 221-227 contact the skin and provide electrical stimulation. One example of electrical stimulation is applying an alternating current voltage to any one electrode, causing the skin near that electrode to heat through inductive heating. Another example is applying an alternating current voltage between any two electrodes, with current flowing through the skin between them to heat through conductive heating and / or provide muscle stimulation. The voltage amplitude and frequency of these alternating currents can be fixed, preset options, or freely set or selected by the user. Other examples of electrical stimulation include iontophoresis from any one or more electrodes. The specific types of electrical stimulation provided by electrodes 221-227 will be described in detail later.

[0082] At least a part of the electrodes 221 to 227 (preferably all of them) preferably protrude as little as possible from the surface of the head portion 214, i.e., are disposed on the same curved surface as the surface of the head portion 214. When the electrodes 221 to 227 contact the skin, the head portion 214 also contacts the skin, but since the electrodes 221 to 227 do not protrude from the head portion 214, it is possible to prevent the electrodes 221 to 227 from catching the skin and causing physical stimulation when the electrodes 221 to 227 are moved in a state in which they contact the skin. However, some or all of the electrodes 221 to 227 can protrude from the surface of the head portion 214.

[0083] One electrode (e.g., electrode 223) is disposed near the apex of the head portion 214. Another electrode (e.g., electrode 222) is disposed away from the apex of the head portion 214. Furthermore, the relative positions of these electrodes 222 and 223 are such that it is possible to contact only the electrode 223 without contacting the electrode 222, or to contact only the electrode 222 without contacting the electrode 223, or to contact both the electrode 222 and the electrode 223. For example, the shortest distance between the electrode 222 and the electrode 223 is 1 mm or more and less than 70 mm, preferably 1 mm or more and less than 50 mm, and more preferably 1 mm or more and less than 30 mm.

[0084] Furthermore, at least a part of one or more (preferably two or more) of the electrodes 221 to 227 should be visible from the x-axis direction, the y-axis direction, and the z-axis direction. Arranging the electrodes in this way on the curved head portion 214 makes it possible to easily contact the desired electrode to the skin from various angles.

[0085] The specific shape, layout, and size of the electrodes 221 to 227 are described below.

[0086] The electrode 221 is disposed at the leftmost end of the head portion 214 (see FIG. 2). Figure 3A The area of the electrode 221 is, for example, 20 to 500 mm 2 around, and a specific example is 240 mm 2 around. Furthermore, the electrode 221 extends approximately in the y-axis direction (see FIG. 2). Figure 3C Furthermore, a part of the electrode 221 is located on the apex side of the front face 211, and another part is located on the back face 212 side (see FIG. 2). Figure 3C However, the area of the part on the front face 211 side should be larger than the area of the part on the back face 212 side when the areas of these two parts are compared.

[0087] With this configuration, the portion of the electrode 221 on the front face 211 side is more easily brought into contact with the skin. In addition, when the portion of the electrode 221 on the front face 211 side is brought into contact with the skin, the display portion 270 on the back face 212 can be seen through the mirror. Also, when the hand-held skin treatment device 200 is held, the fingers on the back face 212 side are less likely to come into contact with the electrode 221. The above points apply to the other electrodes 222 to 227 as well.

[0088] The electrode 222 is disposed adjacent to the electrode 221 (see Figure 3A ). The area of the electrode 222 is, for example, 20 to 500 mm 2 around, and a specific example is 310 mm 2 around, which is larger than the electrode 221. The electrode 222 extends substantially in the y-axis direction of the electrode 221 (see Figure 3C ).

[0089] A portion 223a of the electrode 223 is disposed adjacent to the electrode 222, another portion 223b is disposed near the vertex of the head portion 214, and another portion 223c is disposed beside the electrode 226 (see Figure 3A ). The area of the electrode 223 is, for example, 100 to 800 mm 2 around, and a specific example is 470 mm 2 around. At least one of the portions 223a to 223c of the electrode 223 extends in the y-axis direction.

[0090] The electrode 224 is disposed between the portions 223a and 223b of the electrode 223 and extends substantially in the y-axis direction. The area of the electrode 224 is, for example, 20 to 600 mm 2 around, and a specific example is 300 mm 2 around.

[0091] The electrodes 225 to 227 are left-right symmetrical inverted versions of the electrodes 224, 222, and 221, respectively, and detailed description is omitted.

[0092] As shown in Figure 4 , the distance (the longest distance) between the position of the electrode 221 closest to the left end of the head portion 214 and the position of the electrode 227 closest to the right end of the head portion 214 is about 103 mm around, but is preferably 110 mm or less. In addition, the shortest distance between the electrode 221 and the electrode 227 is about 70 mm around, but is preferably 50 mm or more, and more preferably 70 mm or more. One or more electrodes 222 to 226 can be disposed between the electrode 221 and the electrode 227.

[0093] With this size, electrodes 221-227 can also contact and stimulate large facial muscles (such as the large and small cheekbones). By making electrodes 221-227 contact and cover a wide area of ​​the face, the skin treatment device 200 can be moved along the facial muscles and facial contours over a wide area, and extensive care of the facial contours can be performed in a single treatment.

[0094] The following combination Figure 5 and Figure 6 Additional information on the above dimensions. The average distance between auricles in women is known ( Figure 5 (a) is 141.5mm, nose width ( Figure 5 (b) is 33mm. Figure 5 (c) The average B-B' distance is 54.25 mm (=(141.5-33) / 2). Therefore, the minimum distance between electrodes 221 and 227 is preferably 50 mm or more. Furthermore, the average distance from the back of the head to the root of the nose in women is known to be... Figure 6 (a) is 177mm, the distance from the back of the head to the earlobe is ( Figure 6 (b) is 85.3 mm. Figure 6 (c) The average distance between A and A' is 91.7 mm (=177-85.3). Therefore, to avoid unnecessary enlargement, a maximum distance of 110 mm between electrodes 221 and 227 is sufficient, and preferably less than 110 mm.

[0095] In addition, such as Figure 4 As shown, the distance between the end (front end) of the back side 212 of the portion 223b of electrode 223 and the tip of head 214 is, for example, about 5 to 20 mm, specifically about 15 mm. By setting such a distance, it is possible for head 214 with electrode 223 to more easily contact the skin of the front of the neck.

[0096] Furthermore, the distance between the center of gravity of electrode 221 and the center of gravity of electrode 222 is, for example, 13.5 mm, preferably 10 mm or more. By setting such a distance, electrodes 221 and 222 can individually contact the skin of small areas such as the temples and corners of the eyes.

[0097] Although not shown in the figure, the shortest distance between the electrode 221 and the electrode 222 is, for example, about 1 to 10 mm, and a specific example is about 4 mm. The shortest distance between the electrode 222 and the part 223a of the electrode 223 is, for example, about 1 to 10 mm, and a specific example is about 3.55 mm. The shortest distance between the part 223a of the electrode 223 and the electrode 224 is, for example, about 1 to 10 mm, and a specific example is about 2 mm. The shortest distance between the electrode 224 and the part 223b of the electrode 223 is, for example, about 1 to 10 mm. In this way, the electrode distance is designed to be uneven. As a result, the range of action of the electric stimulation on the skin can be flexibly adjusted, and the electric stimulation can be provided in a narrow area or in a wide area. In addition, by designing the part of the electrode distance to be small enough (for example, the shortest distance between the part 223a of the electrode 223 and the electrode 224 is about 2 mm), the skin can more easily feel the warm feeling.

[0098] Figures 7A to 7E An example of a method of using the skin treatment device in the embodiment is shown. By arranging the electrodes 221-227 as described above, it can be applied to a wide area such as the front of the neck and the back of the neck. For example, by using the upper surface (see the part visible in Figure 3C ) of the skin treatment device 200, the electrodes 221-227 can be brought into contact with the skin surface of a larger area such as the front of the neck and the back of the neck (see Figure 7A ). In addition, when applied to the cheeks, by using the front surface 211 (see the part visible in Figure 3A ) of the skin treatment device 200, the electrodes 221-227 can be brought into contact with the skin surface of the cheeks (see Figure 7B ). In addition, when applied to small parts such as the temples and the corners of the eyes, by using the side surface (see the part visible in Figure 3E or Figure 3F ), the electrodes 221 and 222 can be brought into contact with the skin surface of small parts such as the temples and the corners of the eyes (see Figure 7C and Figure 7D ). In addition, when applied to parts that require special attention such as the nasolabial folds, by using the top of the skin treatment device 200, only the electrodes 223-225 can be brought into contact with the skin surface (see Figure 7E ). As described above, the skin treatment device of the present application can act on a large area (a wide area), and can effectively act on small parts and curved skin surfaces, and effective care can be achieved by a single device, and by contacting and effectively acting on a wide area, the tightening effect (lifting effect) of the skin can be improved.

[0099] Here, the electrodes 221-227 are preferably curved surfaces, rather than flat surfaces. The reason is explained below.

[0100] Figure 8 is a diagram that explains the difference in contact area caused by the shape of the electrode. The greater the contact area of the electrode with the skin, the smaller the resistance, and the greater the current that flows through the skin. If the electrode is flat, as shown in Figure 8 (b1) ~ Figure 8 (b3), the contact area of the electrode with the skin remains substantially constant regardless of the contact pressure. Therefore, when the electrode contacts the skin, the contact area becomes large, resulting in a sudden flow of a large current through the skin.

[0101] On the other hand, in the present embodiment, since the electrode is curved, as shown in Figure 8 (a1) ~ (a3), the higher the contact pressure of the electrode with the skin, the greater the contact area of the electrode with the skin. Therefore, by gradually increasing the contact pressure, it is possible to gradually increase the contact area, preventing a large current from suddenly flowing through the skin. In particular, since each electrode is curved in the three-axis direction, it is possible to more finely adjust the current flowing through the skin, resulting in a desirable effect. Furthermore, the curved head shape allows the user to adjust the pressing force, and thus the feeling of the electrical stimulation.

[0102] Figure 9 is a diagram showing an outline of the control section 290 of the present embodiment. Figure 10 is a diagram showing an example of the hardware configuration of the control section 290. Figure 10 In the present embodiment, the peripheral device 160 is schematically shown in association with the hardware configuration of the control section 290.

[0103] The control section 290 is electrically connected to a power source, and also electrically connected to the plurality of electrodes 221 ~ 229 and the like. The power source can be an internal battery installed in the skin treatment device 200, and / or can be an external power source connected to the skin treatment device 200. The control section 290 can include a power supply circuit or the like that generates various operation power sources based on the power source. Furthermore, the control section 290 can include a general-purpose processor, a dedicated processor, an integrated circuit, an ASIC (Application Specific Integrated Circuit), or the like. In the present embodiment, the power source is a secondary battery 280.

[0104] As shown in the example of Figure 10 , the control section 290 includes a CPU (Central Processing Unit) 111, a RAM (Random Access Memory) 112, a ROM (Read Only Memory) 113, an auxiliary storage device 114, a drive device 115, a communication interface 117, and a wired transceiver 125 and a wireless transceiver 126 connected to the communication interface 117, which are connected by a bus 119.

[0105] The auxiliary storage device 114 is, for example, an HDD (Hard Disk Drive) or an SSD (Solid State Drive) for storing data related to application software. The wired transceiver 125 includes a transceiver that communicates using a wired network. The wired transceiver 125 can connect the peripheral device 160. However, part or all of the peripheral device 160 can also be connected to the bus 119 or the wireless transceiver 126. In addition, the peripheral device 160 can include the plurality of electrodes described above, and a mobile terminal such as a smartphone of a user. When the mobile terminal is included, the user can make various settings of the skin treatment device 200 through the mobile terminal.

[0106] The wireless transceiver 126 includes a transceiver that communicates using a wireless network. The wireless network can include a cellular network, the Internet, a VPN (Virtual Private Network), a WAN (Wide Area Network), and the like. In addition, the wireless transceiver 126 can also include a near field communication (NFC), a Bluetooth (registered trademark) communication section, a Wi-Fi (Wireless Fidelity) transceiver, an infrared transceiver, and the like.

[0107] In addition, the control section 290 can also be connected to the recording medium 116. The recording medium 116 stores a specific program. The program stored in the recording medium 116 can be installed in the auxiliary storage device 114 of the control section 290 by the drive device 115. The specific program installed can be executed by the CPU 111 of the control section 290. For example, the recording medium 116 can be a recording medium that records information optically, electrically, or magnetically, such as a CD (Compact Disc)-ROM, a floppy disk, or a magneto-optical disk, or a semiconductor memory that records information electrically, such as a ROM or a flash memory, and the like. However, the recording medium 116 does not include a transmission medium.

[0108] In the present embodiment, the control section 290 generates one or more output waveforms that can be applied to the skin through the plurality of electrodes 221 to 227 based on the secondary battery 280.

[0109] In the present embodiment, the control section 290 generates an alternating current waveform M0 (alternating current stimulation) with a frequency of 10 kHz to 250 kHz. In this case, the control section 290 can generate the alternating current waveform M0 in a manner that can be applied to the skin of the user through the plurality of electrodes 221 to 227. That is, the generated alternating current waveform M0 can apply some of the plurality of electrodes as a positive electrode (or a negative electrode) and the other electrodes as a negative electrode (or a positive electrode) to the skin of the user. The frequency and the control method in the present application are not limited to the present embodiment, and high frequency, low frequency, iontophoresis, microcurrent, and the like can also be used.

[0110] In addition, in the present specification, unless otherwise specified, the "alternating current waveform" refers not only to a sine wave but also to any waveform having bipolarity.

[0111] The utility model's utility model person found in research, when the frequency and electrode spacing of alternating waveform M0 are in the specific range, can effectively realize the balance of temperature sensing effect and muscle stimulation effect (both are taken into account). That is, through the combination of electrodes, different electrode spacings can be selected, and appropriate frequencies can be applied according to the selected electrode spacings, so that a single device can provide various electrical stimulation. Through this function, the skin treatment device of the utility model can realize personalized treatment (customized processing) according to the use site and purpose.

[0112] As Figure 2 Indicated, heater 230 is located in the inside of main body 210, and heats a part or all of electrodes 221~227 according to the control of control part 290. One heater 230 can be provided to heat electrodes 221~227, or seven heaters 230 can be provided for each electrode 221~227. The heating level can be constant, or can be adjusted by the user through the button described later, for example, the user can be allowed to select from 38 degrees, 40 degrees or 42 degrees.

[0113] LED 240 is an example of a light source, and emits light to the outside through the light-transmitting bottom 213 and / or head 214 according to the control of control part 290. The arrangement of LED 240 is shown below. In addition, the light source of the utility model is not limited to LED, and various light sources such as halogen lamp, organic EL, etc. can also be used.

[0114] Figure 11 Is the yz cross-sectional view of skin treatment device 200. Skin treatment device 200 has one or more (1 or more) LEDs 241, and light from LED 241 is emitted from the electrode through the light-transmitting head 214. When a non-light-transmitting part 301 is arranged between the head 214 and the LED 241, a hole 301a (light-transmitting part) is provided on the non-light-transmitting part 301 to allow the light of LED 241 to pass through. LED 241 can be installed on the back of head 214, but is preferably arranged separately from head 214. This is because the light can be diffused between LED 241 and head 214.

[0115] In addition, in the non-light-transmitting part 301, the part through which light passes does not have to be a physical hole 301a, but can be a light-transmitting part. That is, the non-light-transmitting part 301 can be formed by performing light-shielding treatment (such as painting, evaporation, printing) on a partially light-transmitting part (such as PET resin), and the part not subjected to light-shielding treatment becomes a light-transmitting part to allow light to pass through.

[0116] Furthermore, the skin treatment device 200 also has one or more LEDs 242, the light of which passes through the bottom 213. When a non-light-transmitting member 302 is arranged between the bottom 213 and the LEDs 242, a hole 302a (light-transmitting portion) is provided in the non-light-transmitting member 302 to allow the light of the LEDs 242 to pass through. The LEDs 242 can be mounted on the back of the bottom 213, but are preferably arranged separately from the bottom 213 so as to be able to diffuse the light between the LEDs 242 and the bottom 213.

[0117] In addition, in the non-light-transmitting member 302, the portion through which light passes need not be a physical hole 302a, but can also be a light-transmitting portion. That is, the non-light-transmitting member 302 can be constructed as a partially light-transmitting member (such as PET resin) on which a light-blocking treatment (such as painting, vapor deposition, printing) has been performed, and the portion on which the light-blocking treatment has not been performed becomes a light-transmitting portion to allow light to pass through. In this way, the skin treatment device of the present application, by having a double-layer structure of a light-transmitting head portion and a non-light-transmitting portion, is able to appropriately diffuse light while preventing the internal device structure from being exposed to the outside.

[0118] The LEDs 241 can emit red light. This helps to promote blood circulation and is expected to improve skin elasticity. The LEDs 241 can also emit blue light, which helps to inhibit skin secretion and tighten pores. The LEDs 241 can also emit yellow light, which helps to activate the metabolism of the skin and increase the transparency and luster of the skin. The color of the light emitted by the LEDs 241 is not particularly limited, and can also be other colors (such as blue-green), and more than two LEDs emitting different colors of light can also be provided. The above also applies to the LEDs 242.

[0119] The buttons 251-253 are an example of an input interface for accepting user operations. The positions of the buttons 251-253 are arbitrary, but are preferably arranged on the same side as the display portion 270, and more preferably near the display portion 270.

[0120] The button 251 controls the power switch of the skin treatment device 200. For example, in the power-off state, the button 251 is held down to turn on the power. In the power-on state, the button 251 is held down to turn off the power. In the power-on state but in standby mode, the button 251 is pressed to enter the working mode. In addition, the button 251 is also used to set the heating level of the heater 230. For example, in the power-on state, the button 251 is pressed to sequentially change the heating levels, heating level 1 (38 degrees), heating level 2 (40 degrees), and heating level 3 (42 degrees).

[0121] The buttons 252 and 253 are used to set or select which electrodes to apply which electric stimulus, in other words, to set or select which electrodes to apply which voltage (e.g., magnitude level and frequency of alternating voltage). For example, one of predetermined operation modes can be set by the button 252. The magnitude level of the voltage can be set by the button 253. The specific operation modes will be described later.

[0122] The temperature sensor 261 is configured to measure a specified portion of the skin treatment device 200. For example, temperature sensors 261 for measuring the temperature of the electrodes 221 to 227, and a temperature sensor 261 for measuring the temperature of the heater 230 can be provided. The measured temperature is transmitted to the control section 290. The control section 290 can control the heater 230 in accordance with the measured temperature of the electrodes 221 to 227 or the heater 230. For example, the control section 290 can perform feedback control to bring the temperature of the electrodes 221 to 227 to a set heating level, or turn off the heater 230 when the temperature exceeds a specified value.

[0123] The motion sensor 262 is used to detect the motion of the skin treatment device 200. The detected motion is transmitted to the control section 290. For example, if no motion is detected for a specified time, the control section 290 can place the skin treatment device 200 in a standby mode to reduce the consumption of the secondary battery 280.

[0124] The display section 270 is an example of an output interface for providing various information to the user. The position of the display section 270 is arbitrary, but it is preferable to be provided together with the buttons 251 to 253 on the back surface 212. Because the user can see the buttons 251 to 253 and the display section 270 provided on the back surface 212 through the mirror while contacting the electrodes 221 to 227 on the front surface 211 side with the skin.

[0125] The display section 270 can display power state information (e.g., on / off state, remaining capacity of the secondary battery). The display section 270 can also display the set heating level. The display section 270 can also display information on which electrodes to apply which electric stimulus (e.g., magnitude level, frequency of alternating voltage, operation mode).

[0126] The secondary battery 280, for example, a lithium ion battery, supplies power to each portion of the skin treatment device 200 in accordance with the control of the control section 290. Instead of the secondary battery, a primary battery can be used, or power can be supplied from an external direct current power source such as a commercial alternating current power source or a USB.

[0127] The control section 290 controls each part of the skin treatment device 200. For example, the control section 290 is built-in with a voltage converter (DC-AC converter or the like), generates an alternating voltage of a desired amplitude level and frequency, and outputs it through one of the electrodes 221 to 227. Further, the control section 290 controls the heater 230 according to a set heating level, and controls the LED 240. Part or all of the control section 290 can be realized by hardware, or can be realized by a processor executing a specific program.

[0128] The following shows a specific example of the control by the control section 290.

[0129] The control section 290 switches to control which two of the electrodes 221 to 227 to generate an alternating voltage therebetween.

[0130] A more specific example is that when the user sets the operation mode to the first operation mode by operating the button 252, the control section 290 generates an alternating voltage between the electrode 221 and the electrode 222. In this case, it is preferable that the control section 290 makes the other electrodes 223 to 227 not generate a voltage (float).

[0131] Figure 12A The operation of the control section 290 in the first operation mode is schematically shown. The control section 290 converts the direct voltage from the secondary battery 280 into an alternating voltage of a predetermined frequency, and outputs it from the electrodes 221 and 222.

[0132] On the other hand, when the user sets the operation mode to the second operation mode by operating the button 252, the control section 290 generates an alternating voltage between the electrode 221 and the electrode 227. In this case, it is preferable that the control section 290 makes the other electrodes 222 to 226 not generate a voltage (float).

[0133] Figure 12B The operation of the control section 290 in the second operation mode is schematically shown. The control section 290 converts the direct voltage from the secondary battery 280 into an alternating voltage of a predetermined frequency, and outputs it from the electrodes 221 and 227.

[0134] In the above-described first operation mode, the alternating voltage distance between the electrodes 221 and 222 is relatively short. Therefore, it is possible to provide an electric stimulus (muscle stimulus) and a warm feeling in a narrow range on the skin between the electrodes 221 and 222. On the other hand, in the second operation mode, the alternating voltage distance between the electrodes 221 and 227 is relatively long. Therefore, it is possible to provide an electric stimulus (muscle stimulus) and a warm feeling in a large range on the skin between the electrodes 221 and 227, and in particular, it is possible to provide a gentle muscle stimulus and a warm feeling. In this way, it is possible to flexibly control the range of action of the electric stimulus.

[0135] Further, the control section 290 determines which two of the electrodes 221 to 227 to turn on, in other words, controls which two electrodes to generate the same waveform of voltage, or in other words, controls which two electrodes to generate the same frequency and the same phase of voltage.

[0136] A more specific example is that when the user sets the operation mode to the above-mentioned first operation mode by operating the button 252, the control section 290 generates an alternating current between the electrode 221 and the electrode 222. In this case, the control section 290 turns on the electrode 221 and the electrode 222 (same waveform) and turns off the electrodes 223 to 225. Figure 13A The voltage generated at this time in the electrodes 221 and 222 is schematically shown in FIG. 12.

[0137] On the other hand, when the user sets the operation mode to the third operation mode by operating the button 252, the control section 290 turns on the electrode 221 and the electrode 222 (same waveform) and turns on the electrode 226 and the electrode 227 (same waveform) and generates an alternating voltage between the electrode 222 and the electrode 226.

[0138] Figure 12C The operation of the control section 290 in the third operation mode is schematically shown. The control section 290 turns on the electrode 221 and the electrode 222 (even if there is a component having a resistance value between the electrode 221 and the electrode 222) and turns on the electrode 226 and the electrode 227 (even if there is a component having a resistance value between the electrode 226 and the electrode 227), converts the direct voltage from the secondary battery 280 into an alternating voltage of a predetermined frequency, and outputs from the electrode 221 (222) and the electrode 226 (227). In this case, the control section 290 turns on the electrode 221 and the electrode 222 (same waveform) and turns on the electrode 226 and the electrode 227 (same waveform) and generates an alternating voltage between the electrode 222 and the electrode 226. Figure 13B The voltage generated at this time in the electrodes 221, 222, 226, and 227 is schematically shown in FIG. 16.

[0139] In the third operation mode, it is possible to increase the electrode area in which the same frequency and the same phase of voltage are generated. This makes it possible to suppress a large current from flowing through a local part of the skin and to reduce pain.

[0140] In addition, this mode can be set in advance, or it can be allowed for the user to arbitrarily set the amplitude level, the frequency, which two of the electrodes 221 to 227 to generate an alternating voltage between, and which two of the electrodes 221 to 227 to turn on.

[0141] (Electrode-related change)

[0142] Figures 14 to 16 A change (pattern) in the electrode relationship between the paired electrodes when an electric stimulus is applied is shown. This can be set to a change in which the electrode pitch is increased. Figure 17 is an effect diagram.

[0143] With this electrode structure, it is possible to realize various electrode pitches (electrode distances) by combining the electrode pairs. Figures 14 to 16The changes in the combinations of pairs of electrodes along the lines R15 to R17 in the figure are shown.

[0144] By applying electrical stimulation in structures having different electrode spacings, the electrode spacings and the application frequencies can be adjusted, so that the electrode combinations and the frequencies can be controlled according to the purpose. For example, Figure 17 The action areas SC182 generated by the pairs of electrodes shown by Figure 16 The action areas SC181 generated by the pairs of electrodes shown by Figure 14 and Figure 15 The changes in the combinations of electrodes are not limited to this, and can also be combinations of electrodes 221 and 227, electrodes 221 and 226, and the like.

[0145] In addition, under the electrode spacings and frequencies for muscle electrical stimulation, the warming effect can be assisted by adding the heating effect of a heater (not shown) built into the head 214 from the skin surface. Under the electrode spacings and frequencies for electrical warming stimulation, if the warming sensation stimulation is weak or according to the characteristics of the site, the heating effect of the heater can also be added from the skin surface on the basis of electrical stimulation. By using electrical stimulation and a heater at the same time, heating from the inside and the surface of the skin can be performed, so that the warming stimulation can be enhanced. That is, by providing a heater in the electrode, the effect of heating from the surface can be increased.

[0146] Since the heating depth of the heater and the heat of the 40 kHz to 250 kHz alternating current stimulation are different, for sites such as the eye where the skin is thin, stimulation mainly by the heater can be used, and for sites such as the cheek where the skin is thick, a use mode in which the heater and the heat of the alternating current stimulation are combined can be used. In this way, effective care can be achieved according to the characteristics of each site.

[0147] As described above, the following aspects can be listed.

[0148] [A1]

[0149] A skin treatment device characterized by comprising: a head; and electrodes provided along a surface of the head to apply electrical stimulation to the skin, an intersection of the surface of the head and a first vertical cross section including a first direction of the head being curved, an intersection of the surface of the head and a second vertical cross section including a second direction perpendicular to the first direction of the head being curved, and an intersection of the surface of the head and a horizontal cross section being at least partially curved.

[0150] [A2]

[0151] The skin treatment device according to [Al], wherein at least a portion of the electrode is visible from a direction perpendicular to the first vertical cross section, at least a portion of the electrode is visible from a direction perpendicular to the second vertical cross section, and at least a portion of the electrode is visible from a direction perpendicular to the horizontal cross section.

[0152] [A3]

[0153] The skin treatment device according to [Al] or [A2], wherein the electrode is provided on the same curved surface as the head surface.

[0154] [A4]

[0155] The skin treatment device according to [Al] or [A2], wherein the electrode is provided on the same curved surface as the head surface.

[0156] [B1]

[0157] A skin treatment device characterized by comprising: a convex head; a first electrode for applying an electric stimulus to the skin provided along a surface of the head in the vicinity of an apex of the head; and a second electrode for applying an electric stimulus to the skin provided along the surface of the head at a position away from the apex of the head.

[0158] [B2]

[0159] The skin treatment device according to [Bl], wherein the first electrode and the second electrode are separated from each other to such an extent that any of the following states is possible: a state in which the first electrode contacts the skin and the second electrode does not contact the skin; a state in which the second electrode contacts the skin and the first electrode does not contact the skin; and a state in which the first electrode and the second electrode contact the skin.

[0160] [B3] The skin treatment device according to [Bl] or [B2], wherein the first electrode and the second electrode are separated from each other by 1 mm or more and less than 70 mm.

[0161] [C1]

[0162] A skin treatment device characterized by comprising: a main body having a first face and an opposite second face and a convex head provided at an upper portion of the main body and having an apex extending in a predetermined direction of the main body; and an electrode provided in the head and at least partially on the first face side of the apex and for applying an electric stimulus to the skin.

[0163] [C2]

[0164] The skin treatment device according to [C1], wherein the electrode includes a first portion provided on the first face side of the top portion and a second portion provided on the second face side of the top portion, the first portion having an area larger than that of the second portion.

[0165] [C3]

[0166] The skin treatment device according to [C1] or [C2], comprising a display portion provided on the second face of the main body.

[0167] [C4]

[0168] The skin treatment device according to [C3], wherein the display portion displays at least one of: power state information of the skin treatment device, and information on what kind of electric stimulation is applied from the electrode.

[0169] [D1]

[0170] A skin treatment device comprising: a main body having a recess portion provided on a lower portion thereof and a head portion provided on an upper portion thereof; and an electrode provided on the head portion for applying electric stimulation to skin.

[0171] [D2]

[0172] The skin treatment device according to [D1], wherein the recess portion is for placing a base of a thumb to hold the skin treatment device.

[0173] [D3]

[0174] The skin treatment device according to [D1] or [D2], wherein the recess portion has a width of 5 mm or more and less than 100 mm, and a height of 1 mm or more and less than 50 mm.

[0175] [E1]

[0176] A skin treatment device comprising: a head portion; first and second electrodes provided on the head portion for applying electric stimulation to skin; and a light source configured to emit light from between the first and second electrodes and separate from the head portion.

[0177] [E2]

[0178] The skin treatment device according to [E1], comprising a non-light-transmissive member provided between the head portion and the light source, the non-light-transmissive member being provided with a light-transmissive portion through which the light emitted from the light source passes, the head portion being made of a light-transmissive material.

[0179] [E3]

[0180] The skin treatment device according to [E2], wherein the light-transmissive portion is a hole provided on the non-light-transmissive member.

[0181] [E4]

[0182] The skin treatment device according to [E2], wherein the non-light-transmissive member is a light-shielding member partially subjected to light-shielding treatment, and a portion not subjected to the light-shielding treatment is a light-transmissive portion.

[0183] [F1]

[0184] A skin treatment device characterized by comprising: a main body having an upper head portion and a lower bottom portion; an electrode provided at the head portion for applying an electric stimulus to the skin; and a light source configured to emit light from the bottom portion.

[0185] [F2]

[0186] The skin treatment device according to [F1], wherein a non-light-transmissive member is provided between the bottom portion and the light source, the non-light-transmissive member is provided with a light-transmissive portion through which light emitted from the light source passes, and the bottom portion is made of a light-transmissive material.

[0187] [F3]

[0188] The skin treatment device according to [F2], wherein the light-transmissive portion is a hole provided in the non-light-transmissive member.

[0189] [F4]

[0190] The skin treatment device according to [F2], wherein the non-light-transmissive member is a light-shielding member partially subjected to light-shielding treatment, and a portion not subjected to the light-shielding treatment is a light-transmissive portion.

[0191] [G1]

[0192] A skin treatment device characterized by comprising: a head portion; and a first electrode, a second electrode, and a third electrode provided at the head portion for applying an electric stimulus to the skin, wherein a width between the first electrode and the second electrode is different from a width between the second electrode and the third electrode.

[0193] [H1]

[0194] A skin treatment device characterized by comprising: a head portion; a first electrode, a second electrode, and a third electrode provided at the head portion for applying an electric stimulus to the skin; and a control portion that switches between a first mode and a second mode, wherein the first mode generates an alternating voltage between the first electrode and the second electrode, and the second mode generates an alternating voltage between the second electrode and the third electrode and turns on the first electrode and the second electrode.

[0195] [I1]

[0196] A skin treatment device characterized by comprising: a head portion; a plurality of electrodes provided in the head portion for applying electrical stimulation to skin; and a control portion that controls which of the plurality of electrodes are turned on.

[0197] [I2]

[0198] The skin treatment device according to [I1], wherein the control portion controls which of the plurality of electrodes are turned on in accordance with a user operation.

[0199] [J1]

[0200] A skin treatment device characterized by comprising: a head portion; a first electrode, a second electrode, and a third electrode provided in the head portion for applying electrical stimulation to skin; wherein the first electrode has a first portion, a second portion, and a third portion electrically connected; the second electrode is provided between the first portion and the second portion; and the third electrode is provided between the second portion and the third portion.

[0201] [J2]

[0202] The skin treatment device according to [J1], wherein at least a portion of the first portion, at least a portion of the second portion, at least a portion of the third portion, at least a portion of the second electrode, and at least a portion of the third electrode extend in substantially the same direction.

[0203] [K1]

[0204] A skin treatment device characterized by comprising: a head portion; a first electrode provided at one end side of the head portion for applying electrical stimulation to skin; and a second electrode provided at the other end side of the head portion opposite to the one end side for applying electrical stimulation to skin; wherein a distance between a portion of the first electrode closest to the one end side and a portion of the second electrode closest to the other end side is 110 mm or less, and a shortest distance between the first electrode and the second electrode is 50 mm or more.

[0205] [K2]

[0206] The skin treatment device according to [K1], wherein the shortest distance between the first electrode and the second electrode is 70 mm or more.

[0207] Any portion or all of each functional section described in this specification can be realized by a program. The program mentioned in this specification can be recorded non-transitorily on a computer-readable recording medium.

[0208] These programs can be installed on a computer (so-called native applications). In this case, the programs can be downloaded to the computer through a communication line including wireless communication such as the Internet, or can be distributed while being installed on the computer.

[0209] Alternatively, the programs can also be programs that operate on a web browser (so-called web applications). In this case, the computer can receive a program described in a markup language file such as an HTML file from a server, and can execute the program through a web browser.

[0210] Based on the above description, other effects and various modifications of the present application can be conceivable to those skilled in the art, but the embodiments of the present application are not limited to the above-described various specific examples. For example, it is obvious that only a part of the present application of each embodiment can be used, or a present application in which a plurality of embodiments are combined is also obvious. Within the scope of the technical idea and the spirit of the present application derived from the contents specified in the technical scope and equivalents thereof without departing from the technical scope, various additions, modifications, and partial deletions can be made.

[0211] For example, the contents described in the present specification as one device (or a part, the same applies hereinafter) (including the contents depicted as one device in the drawings) can be implemented by a plurality of devices. Conversely, the contents described in the present specification as a plurality of devices (including the contents depicted as a plurality of devices in the drawings) can be implemented by one device. Alternatively, it is also possible to include part or all of the means or functions included in a certain device in other devices.

[0212] In addition, all matters described in the present specification are not necessarily required. In particular, matters described in the present specification but not described in the technical scope can be considered as optional additional matters.

[0213] In addition, the word "means" in the present specification and the technical scope means hardware (or functions realized by hardware) itself unless otherwise specified, and does not include people (or mental activities of people).

[0214] In addition, the functions of the components described in the present specification can be realized by a general-purpose processor, a special-purpose processor, an integrated circuit, an ASIC (Application-Specific Integrated Circuit), a CPU (Central Processing Unit), a conventional circuit, and / or a combination thereof (circuit or processing circuit) programmed to realize the functions. The processor can include transistors or other circuits, and be considered as a circuit or a processing circuit. The processor can be a programmed processor that executes programs stored in a memory.

[0215] Further, in this specification, a circuit, a unit, a means refers to hardware programmed to achieve the function or hardware executing the function. The hardware can be any hardware disclosed in this specification, or any known hardware programmed to achieve the function or executing the function.

[0216] If the hardware is considered as a processor of a circuit type, the circuit, the means, or the unit is a combination of the hardware and software for configuring the hardware and / or the processor.

[0217] In addition, the applicant only knows the known arts described in the documents in the "Prior Art Documents" column in this specification, but the present application does not necessarily aim to solve the problems in the known arts of the documents. The problems to be solved by the present application should be identified in conjunction with the entire specification. For example, if a specific effect brought about by a specific configuration is described in this specification, it can be considered that the problem opposite to the specific effect is solved. However, this does not necessarily mean that such a specific configuration is a necessary requirement.

[0218] The above describes each embodiment in detail, but the present application is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the technical idea described in the scope of the claims. In addition, all or a plurality of the constituent elements of the foregoing embodiments can be used in combination.

Claims

1. A skin treatment device characterized by comprising: a head portion; and an electrode disposed along a surface of the head portion to apply an electric stimulus to skin, an intersection of the surface of the head portion and a first vertical cross section including a first direction of the head portion is curved, an intersection of the surface of the head portion and a second vertical cross section including a second direction perpendicular to the first direction of the head portion is curved, an intersection of the surface of the head portion and a horizontal cross section is at least partially curved.

2. The skin treatment device according to claim 1, characterized in that, at least a portion of the electrode is visible from a direction perpendicular to the first vertical cross section, at least a portion of the electrode is visible from a direction perpendicular to the second vertical cross section, at least a portion of the electrode is visible from a direction perpendicular to the horizontal cross section.

3. The skin treatment device according to claim 1 or 2, characterized in that, the electrode is disposed on the same curved surface as the surface of the head portion. including:

4. A skin treatment device, characterized in that a convex head portion; a first electrode disposed along the surface of the head portion near an apex of the head portion to apply an electric stimulus to skin; and a second electrode disposed along the surface of the head portion at a position away from the apex of the head portion to apply an electric stimulus to skin.

5. The skin treatment device according to claim 4, characterized in that, the first electrode and the second electrode are separated from each other to such an extent that any of the following states is possible: a state in which the first electrode contacts skin and the second electrode does not contact skin; a state in which the second electrode contacts skin and the first electrode does not contact skin; and a state in which the first electrode and the second electrode contact skin.

6. The skin treatment device according to claim 4 or 5, characterized in that, the first electrode and the second electrode are separated from each other by 1 mm or more and less than 70 mm. including:

7. A skin treatment device, characterized in that a main body having a first face and a second face opposite to the first face and a convex head portion, the head portion being provided at an upper portion of the main body and having a top portion extending in a predetermined direction of the main body; and an electrode provided in the head portion and at least partially on the first face side of the top portion to apply an electric stimulus to skin.

8. The skin treatment device according to claim 7, characterized in that, the electrode includes a first portion provided on the first face side of the top portion and a second portion provided on the second face side of the top portion, an area of the first portion is larger than an area of the second portion. including: a head portion; 9. A skin treatment device, characterized in that a first electrode and a second electrode provided in the head portion to apply an electric stimulus to skin; and a light source configured to emit light from between the first electrode and the second electrode and apart from the head portion.

10. The skin treatment device according to claim 9, characterized in that, including a non-light-transmissive member provided between the head portion and the light source, the non-light-transmissive member being provided with a light-transmissive portion through which light emitted from the light source passes, the head portion is made of a light-transmissive material. including: a main body having an upper head portion and a lower bottom portion; 11. A skin treatment device, characterized in that an electrode provided in the head portion to apply an electric stimulus to skin; and a light source configured to emit light from the bottom portion. ​ ​ 12. The skin treatment device according to claim 11, wherein a non-light-transmitting member is provided between the bottom and the light source, the non-light-transmitting member being provided with a light-transmitting portion through which light emitted from the light source passes, the bottom is made of a light-transmitting material.

13. A skin treatment device, characterized in that including: a head portion; a first electrode, a second electrode, and a third electrode provided at the head portion for applying an electric stimulus to the skin, wherein a width between the first electrode and the second electrode is different from a width between the second electrode and the third electrode.

14. A skin treatment device, characterized in that including: a head portion; a first electrode, a second electrode, and a third electrode provided at the head portion for applying an electric stimulus to the skin; and a control portion that switches between a first mode in which an alternating voltage is generated between the first electrode and the second electrode and a second mode in which an alternating voltage is generated between the second electrode and the third electrode and the first electrode and the second electrode are turned on.

15. A skin treatment device, characterized in that including: a head portion; a plurality of electrodes provided at the head portion for applying an electric stimulus to the skin; and a control portion that controls which of the plurality of electrodes are turned on.

16. The skin treatment device according to claim 15, wherein the control portion controls which of the plurality of electrodes are turned on in accordance with a user operation.

17. A skin treatment device, characterized by including: a head portion; a first electrode, a second electrode, and a third electrode provided at the head portion for applying an electric stimulus to the skin; wherein the first electrode has a first portion, a second portion, and a third portion electrically connected to each other; the second electrode is provided between the first portion and the second portion; the third electrode is provided between the second portion and the third portion.

18. The skin treatment device according to claim 17, wherein at least a portion of the first portion, at least a portion of the second portion, at least a portion of the third portion, at least a portion of the second electrode, and at least a portion of the third electrode extend in substantially the same direction.

19. A skin treatment device, characterized in that including: a head portion; a first electrode provided at one end side of the head portion for applying an electric stimulus to the skin; and a second electrode provided at the other end side of the head portion opposite to the one end side for applying an electric stimulus to the skin; wherein a distance between a portion of the first electrode closest to the one end side and a portion of the second electrode closest to the other end side is 110 mm or less, a shortest distance between the first electrode and the second electrode is 50 mm or more.

20. The skin treatment device according to claim 19, wherein a shortest distance between the first electrode and the second electrode is 70 mm or more.

Images