KR20220065090A - Skin care device and skin measurement method thereof - Google Patents

Abstract

It relates to a skin care device and a method for measuring the skin thereof, which are more convenient for the user, and relates to a body portion forming an appearance, protruding in the front direction of the body portion, and using at least one of ultrasonic driving and iontophoresis driving. a head unit for driving; and a control unit for controlling the driving of the head unit, the head unit comprising: a head case having a groove in a central region; Including, the thickness of the vibrator may be thicker than the thickness of the head case, and the thickness of the insulating film may be thinner than the thickness of the head case.

Description

Skin care device and method for measuring skin thereof

The present invention relates to a skin care device in which user convenience is further considered and a method for measuring skin thereof.

Devices for skin care are implemented in various ways. The skin is subjected to microscopic stimulation and changes the cell activity, which can bring about skin improvement effects such as wrinkle improvement and whitening.

Among them, there are a non-invasive method in which electrical stimulation is applied to the skin, and an invasive method in which a physical stimulation is applied as a representative form.

Conventionally, personal portable devices have not been disseminated, but in recent years, many portable care devices have been commercialized with the development of wireless communication and miniaturization of parts. Conventional skin care device-related technologies are at the same level as disclosed in Korean Patent Publication No. 10-0496192, Korean Patent Publication No. 10-1169675, and Korean Patent Publication No. 10-1177177.

Examples of a method for skin care through electrical stimulation include a method of providing electrical stimulation in a high frequency band and an optical method of providing stimulation in a visible ray region.

The method of stimulating the high frequency band is to give high frequency energy in the 1 MHz band, which can stimulate the skin surface and the deep part of the human body, respectively.

However, there is a problem in that the conventional high frequency band skin care device lacks cosmetic absorption promotion performance, and the low frequency band skin care device has a large vibrator diameter and thickness of the vibrator, which limits the miniaturization of the skin care device.

In addition, when a skin care device of a low frequency band generates vibration close to an audible frequency band, there is a problem of causing tinnitus due to a resonance phenomenon.

Therefore, there is a demand for the development of a skin care device capable of miniaturization without tinnitus occurring even in a low frequency band in the future.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems. Another object of the present invention is to provide a skin care device capable of providing ultrasonic energy of a low frequency band by disposing a vibrator of a low frequency band in a head portion, and a method for measuring skin thereof.

Another object of the present invention is to provide a skin care device capable of performing a combination of ultrasonic driving and iontophoresis driving by disposing an insulating film between the vibrator and the head case, and a method for measuring skin thereof.

Another object of the present invention is to provide a skin care device and a method for measuring skin thereof that can be miniaturized without tinnitus occurring even in a low frequency band by adjusting the thickness ratio between the vibrator and the head case.

Another object of the present invention is to provide a skin care device capable of providing user convenience by arranging a sensing unit for measuring a skin condition, measuring and displaying an individual skin condition, and a method for measuring the skin thereof.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

In order to solve the above technical problems, a skin care device according to an embodiment of the present invention includes a body portion forming an exterior, protruding in the front direction of the body portion, and ultrasonic driving and iontophoresis driving a head unit driven by at least one of: a control unit for controlling driving of the head unit; It may include an insulating film disposed.

A method for measuring skin of a skin care device according to an embodiment of the present invention includes the steps of: checking whether power is applied to a sensing unit when a skin measurement mode signal is input; measuring a reference value according to non-contact with the skin; 1 A step of checking whether a set time has elapsed, a step of completing the preparation for skin measurement when the first set time has elapsed, a step of checking whether the skin is in contact with the sensing unit, and a state of the contacted skin when the skin is in contact It may include the steps of measuring , confirming whether a second set time has elapsed, completing the skin condition measurement when the second set time has elapsed, and displaying the measured skin condition result. .

The effects of the skin care device and the method for measuring skin thereof according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, by disposing a vibrator of a low frequency band in the head portion to provide ultrasonic energy of a low frequency band, it is possible to improve skin absorption of active ingredients.

According to at least one of the embodiments of the present invention, by arranging an insulating film between the vibrator and the head case, ultrasonic driving and iontophoresis driving may be performed in combination.

In addition, according to at least one of the embodiments of the present invention, by adjusting the thickness ratio between the vibrator and the head case, tinnitus does not occur even in a low frequency band and the overall size can be reduced.

In addition, according to at least one of the embodiments of the present invention, by disposing a sensing unit for measuring a skin condition to measure and display an individual skin condition, user convenience can be provided.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of example only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a block diagram illustrating a skin care device according to the present invention.
2 and 3 are perspective views showing a skin care device according to the present invention.
4 and 5 are structural cross-sectional views showing the head of FIG. 2 .
6A to 6D are views illustrating the head case of FIG. 4 .
7 is a graph showing the relative absorption rate of the active ingredient according to the ultrasonic output of the skin care device according to the present invention.
8 and 9 are views showing the sensing unit of FIG. 3 .
10 to 13 are block diagrams for explaining a skin condition measurement unit.
14 is a graph showing reference values according to skin non-contact.
15 is a diagram showing a skin measurement result, and FIG. 16 is a graph showing a voltage level according to the amount of skin moisture.
17 is a flowchart illustrating a method for measuring skin of a skin care device according to the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be

On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

1 is a block diagram illustrating a skin care device according to the present invention.

1 , the skin care device 100 includes a wireless communication unit 110 , an input unit 120 , a sensing unit 130 , an output unit 140 , an interface unit 150 , a memory 160 , It may include a control unit 170 and a power supply unit 180 , and the like.

The components shown in FIG. 1 are not essential for implementing the skin care device 100, so the skin care device 100 described herein may include more or fewer components than those listed above. can have

More specifically, among the components, the wireless communication unit 110 is configured to be connected between the skin care device 100 and the wireless communication system, between the skin care device 100 and another external terminal, or between the skin care device 100 and an external server. It may include one or more modules that enable wireless communication between them. In addition, the wireless communication unit 110 may include one or more modules for connecting the skin care device 100 to one or more networks.

The wireless communication unit 110 may include at least one of a wireless Internet module 111 , a short-range communication module 112 , and a location information module 113 .

The short-range communication module 112 is for short-range communication, and includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, NFC. At least one of (Near Field Communication), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies may be used to support short-range communication. The short-distance communication module 112 is, between the skin care device 100 and the wireless communication system, between the skin care device 100 and other skin care devices 100, or the skin via wireless area networks. Wireless communication between the care device 100 and a network in which another skin care device 100 or an external server is located may be supported. The local area network may be local area networks (Wireless Personal Area Networks).

Here, another external terminal is a mobile terminal or a wearable device capable of exchanging data (or interworking) with the skin care device 100 according to the present invention or a wearable device, for example, a smart watch, a smart It can be glass (smart glass) or HMD (head mounted display). The short-range communication module 112 may detect (or recognize) a mobile terminal or a wearable device capable of communicating with the skin care device 100 in the vicinity of the skin care device 100 . Furthermore, when the detected mobile terminal or wearable device is a device that is authenticated to communicate with the skin care device 100 according to the present invention, the control unit 170 transmits at least a portion of data processed by the skin care device 100, It can be transmitted to a mobile terminal or a wearable device through the short-range communication module 112 . Accordingly, the user of the mobile terminal or the wearable device may use data processed by the skin care device 100 through the mobile terminal or the wearable device. Alternatively, the skin care device 100 may receive processed data through a mobile terminal or a wearable device and perform a specific operation.

For example, data related to the skin condition measured by the skin care device 100 is transmitted to a mobile terminal or a wearable device, converted into a database, and trends of skin condition change are identified and fed back based on the data to drive the skin care device can be controlled.

In particular, the skin care device 100 according to the present invention includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), A short-distance communication technology such as Wireless Universal Serial Bus (Wireless USB) may be applied.

Among them, the NFC module provided in the skin care device 100 supports non-contact short-range wireless communication between terminals at a distance of about 10 cm. The NFC module may operate in any one of a card mode, a reader mode, and a P2P mode. In order for the NFC module to operate in the card mode, the skin care device 100 may further include a security module for storing card information. Here, the security module may be a physical medium such as a Universal Integrated Circuit Card (UICC) (eg, a Subscriber Identification Module (SIM) or a Universal SIM (USIM)), a Secure micro SD, and a sticker, or a logical medium embedded in the skin care device. (eg, embedded Secure element (SE)). Data exchange based on SWP (Single Wire Protocol) may be performed between the NFC module and the security module.

When the NFC module is operated in the card mode, the skin care device 100 may transmit stored card information to the outside like a traditional IC card.

When the NFC module is operated in the reader mode, the skin care device may read data from an external tag. In this case, data received by the skin care device from the tag may be coded in a data exchange format determined by the NFC forum. In addition, the NFC forum defines four record types. Specifically, the NFC forum defines four Record Type Definitions (RTDs) such as Smart Poster, Text, Uniform Resource Identifier (URI), and General Control.

When the NFC module is operated in a peer-to-peer (P2P) mode, the skin care device 100 may perform P2P communication with other devices. In this case, a Logical Link Control Protocol (LLCP) may be applied to P2P communication. For P2P communication, a connection may be created between the skin care device 100 and another external terminal. In this case, the generated connection may be divided into a connectionless mode in which one packet is exchanged and terminated, and a connection-oriented mode in which packets are continuously exchanged. Data and Bluetooth, setup parameters for Wi-Fi connection, etc. can be exchanged through P2P communication. However, since the available distance of NFC communication is short, the P2P mode may be effectively utilized for exchanging small-sized data.

The location information module 113 is a module for acquiring the location (or current location) of the skin care device 100 , and a representative example thereof includes a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the skin care device 100 utilizes a GPS module, the location of the skin care device 100 may be obtained by using a signal transmitted from a GPS satellite. As another example, when the skin care device 100 utilizes a Wi-Fi module, the skin care device 100 is based on information of a wireless AP (Wireless Access Point) that transmits or receives a wireless signal with the Wi-Fi module. position can be obtained. If necessary, the location information module 115 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the skin care device 100 as a substitute or additionally. The location information module 115 is a module used to obtain the location (or current location) of the skin care device 100 , and is not limited to a module that directly calculates or obtains the location of the skin care device 100 . .

The input unit 120 includes a camera 121 or an image input unit for inputting an image signal, and a user input unit 122 for receiving information from a user (eg, a touch key, a mechanical key, etc.) may include The image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The camera 121 processes an image frame such as a still image or a moving image obtained by an image sensor in a video call mode or a shooting mode. The processed image frame may be displayed on the display unit 141 or stored in the memory 160 .

The camera 121 includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to detect a touch of a sensing target for a 3D stereoscopic image. The photo sensor may be stacked on the display device, and the photo sensor is configured to scan the motion of the sensing target close to the touch screen. More specifically, the photo sensor mounts photo diodes and transistors (TRs) in rows/columns and scans the contents placed on the photo sensors using electrical signals that change according to the amount of light applied to the photo diodes. That is, the photo sensor calculates the coordinates of the sensing target according to the amount of change in light, and through this, location information of the sensing target can be obtained.

In particular, the camera 121 provided in the skin care device 100 may perform a function of photographing the attached skin surface state. When the display unit 141 is provided, it is possible to output the photographed skin surface state so that the user can check it.

The user input unit 122 is for receiving information from the user. When information is input through the user input unit 122, the control unit 170 may control the operation of the skin care device 100 to correspond to the input information. there is. The user input unit 122 is a mechanical input means (or a mechanical key, for example, a button located on the front, rear or side of the skin care device 100 , a dome switch, and a jog wheel). , jog switch, etc.) and a touch input means. As an example, the touch input means consists of a virtual key, a soft key, or a visual key displayed on the touch screen through software processing, or a part other than the touch screen. It may be made of a touch key (touch key) disposed on the. On the other hand, the virtual key or the visual key, it is possible to be displayed on the touch screen while having various forms, for example, graphic (graphic), text (text), icon (icon), video (video) or these can be made by a combination of

The sensing unit 130 may include one or more sensors for sensing at least one of information within the skin care device 100 , information on a surrounding environment surrounding the skin care device 100 , and user information. For example, the sensing unit 130 may include a proximity sensor 131, an illumination sensor 132, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. Sensor (G-sensor), gyroscope sensor, motion sensor (133, motion sensor), RGB sensor, infrared sensor (IR sensor: infrared sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic) sensor), optical sensor (eg, camera 121), microphone, battery gauge, environmental sensor (eg, barometer, hygrometer, thermometer, radiation detection sensor, heat detection) sensor, gas detection sensor, etc.) and a chemical sensor (eg, electronic nose, healthcare sensor, biometric sensor, etc.). Meanwhile, the skin care device 100 disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The sensing unit 130 senses at least one of information within the skin care device 100 , surrounding environment information surrounding the skin care device 100 , and user information, and generates a sensing signal corresponding thereto. The controller 170 may control the driving or operation of the skin care device 100 or perform data processing, functions, or operations related to an application program installed in the skin care device 100 based on the sensing signal.

The proximity sensor 131 refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object existing in the vicinity without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor 131 may be disposed in an inner region of the skin care device 100 covered by the touch screen described above or near the touch screen.

Examples of the proximity sensor 131 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive type proximity sensor, a magnetic type proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the proximity sensor 131 may be configured to detect the proximity of the conductive object by a change in an electric field according to the proximity of the object. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of description, the act of approaching an object on the touch screen without contacting it so that the object is recognized that it is located on the touch screen is called “proximity touch”, and the touch The act of actually touching an object on the screen is called "contact touch". The position where the object is touched in proximity on the touch screen means a position where the object is perpendicular to the touch screen when the object is touched in proximity. The proximity sensor 131 may detect a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.) there is. Meanwhile, the controller 170 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern detected through the proximity sensor 131 as described above, and furthermore, provides visual information corresponding to the processed data. It can be printed on the touch screen. Furthermore, the controller 170 may control the skin care device 100 so that different operations or data (or information) are processed according to whether a touch to the same point on the touch screen is a proximity touch or a contact touch. there is.

The touch sensor receives a touch (or touch input) applied to the touch screen (or the display unit 141) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. detect

As an example, the touch sensor may be configured to convert a change in pressure applied to a specific part of the touch screen or a change in capacitance occurring in a specific part of the touch screen into an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, an electrostatic capacitance at the time of touch, etc. in which a touch object applying a touch on the touch screen is touched on the touch sensor. Here, the touch object is an object that applies a touch to the touch sensor, and may be, for example, a finger, a touch pen, a stylus pen, or a pointer.

The controller 170 may perform different controls or may perform the same control according to the type of the touch object that touches the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different controls or the same control according to the type of the touch object may be determined according to the current operating state of the skin care device 100 or a running application program.

On the other hand, the above-described touch sensor and proximity sensor independently or in combination, a short (or tap) touch on the touch screen (short touch), long touch (long touch), multi touch (multi touch), drag touch (drag touch) ), flick touch, pinch-in touch, pinch-out touch, swype touch, hovering touch, etc. It can sense touch.

The ultrasonic sensor may recognize position information of a sensing target by using ultrasonic waves. On the other hand, the control unit 170 can calculate the position of the wave source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source may be calculated using the property that light is much faster than ultrasonic waves, that is, the time at which light arrives at the optical sensor is much faster than the time at which ultrasonic waves reach the ultrasonic sensor. More specifically, the position of the wave source may be calculated using a time difference from the time that the ultrasonic wave arrives using light as a reference signal.

As such, when there is a touch input to the touch sensor, a signal(s) corresponding thereto is sent to the touch controller. The touch controller processes the signal(s) and then transmits the corresponding data to the controller 170 . Accordingly, the control unit 170 can know which area of the display unit 141 has been touched, and the like. Here, the touch controller may be a component separate from the control unit 170 , or may be the control unit 170 itself.

The output unit 140 is for generating an output related to visual, auditory or tactile sense, and includes at least one of a display unit 141 , a sound output unit 142 , a haptic module 143 , and an optical output unit 144 . can do. The display unit 141 may implement a touch screen by forming a layer structure with the touch sensor or being formed integrally with the touch sensor. Such a touch screen may function as the user input unit 122 providing an input interface between the skin care device 100 and the user, and may provide an output interface between the skin care device 100 and the user.

The display unit 141 displays (outputs) information processed by the skin care device 100 . For example, the display unit 141 may display information on an execution screen of an application driven in the skin care device 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the information on the execution screen. there is.

The interface unit 150 serves as a passage with various types of external devices connected to the skin care device 100 . Such an interface unit 150, a wired / wireless headset port (port), an external charger port (port), a wired / wireless data port (port), a memory card (memory card) port, connecting a device equipped with an identification module It may include at least one of ports. In response to the external device being connected to the interface unit 150 , the skin care device 100 may perform appropriate control related to the connected external device.

The memory 160 stores data supporting various functions of the skin care device 100 . The memory 160 may store a plurality of application programs (or applications) driven in the skin care device 100 , data for operation of the skin care device 100 , and commands. At least some of these application programs may be downloaded from an external server through wireless communication. Also, at least some of these application programs may exist on the skin care device 100 from the time of shipment for the basic function of the skin care device 100 . Meanwhile, the application program may be stored in the memory 160 , installed on the skin care device 100 , and driven to perform an operation (or function) of the skin care device 100 by the controller 170 . there is.

In addition to the operation related to the application program, the controller 170 generally controls the overall operation of the skin care device 100 . The controller 170 may provide or process information or functions appropriate to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 160 .

The control unit 170 may be a concept that is mixed with a control unit to be described later.

The controller 170 may control at least some of the components discussed with reference to FIG. 1 in order to drive an application program stored in the memory 160 . Furthermore, in order to drive the application program, the controller 170 may operate at least two or more of the components included in the skin care device 100 in combination with each other.

The power supply unit 180 receives external power and internal power under the control of the control unit 170 to supply power to each component included in the skin care device 100 . The power supply unit 180 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the respective components may operate in cooperation with each other in order to implement an operation, control, or control method of the skin care device 100 . Also, the operation, control, or control method of the skin care device may be implemented on the skin care device by driving at least one application program stored in the memory 160 .

2 and 3 are perspective views showing a skin care device according to the present invention.

FIG. 2 is a view showing a front part of the skin care device, and FIG. 3 is a view showing a rear part of the skin care device.

2 and 3 , the skin care device 1000 of the present invention may include a body unit 1100 , a head unit 1200 , and a controller (not shown).

Here, the body part 1100 may form the appearance of the skin care device 1000 .

In addition, the head unit 1200 may protrude in the front direction of the body unit 1100 and may be driven by at least one of ultrasonic driving and iontophoresis driving.

For example, the head unit 1200 may include a head case having a groove in the central region, a vibrator seated in the groove of the head case, and an insulating film disposed between the vibrator and the head case.

Here, the vibrator may output ultrasonic waves in a frequency band of about 20 KHz to about 500 KHz.

The reason for using the vibrator of the low frequency band in the present invention is that it has excellent skin absorption promoting performance for active ingredients such as cosmetics.

In some cases, the skin care device 1000 according to the present invention may further include a mode selection unit 1410 , a mode operation unit 1430 , and a display unit 1420 .

Here, the mode selection unit 1410 , the mode operation unit 1430 , and the display unit 1420 may be disposed on the front surface of the body unit 1100 .

The mode selection display unit 1410 may display an operation mode selected from, for example, an ultrasound mode, an iontophoresis mode, a skin measurement mode, a wireless communication mode, etc. as a screen for displaying the current operation mode of the skin care device. there is.

Next, the skin measurement display unit 1420 may display the skin measurement result according to the skin measurement mode operation.

And, in the mode selection and mode operation unit 1430, the mode selection unit is a function for selecting an operation mode of the skin care device. For example, the operation mode includes an ultrasound mode, an iontophoresis mode, a skin measurement mode, It may include a wireless communication mode and the like.

Also, the mode operation unit may perform a function of starting or stopping a mode operation selected by the mode selection unit.

In some cases, a display unit capable of displaying an energy supply level and a supply time may be further included on the front surface of the body unit 1000 .

Next, in the skin care device 1000 of the present invention, a power button 1510 for supplying power to the side portion of the body 1100 may be disposed.

In addition, the skin care device 1000 of the present invention may further include first and second control buttons 1520 and 1530 disposed on the side surface of the body 1100 .

Here, the first adjustment button 1520 is disposed on the side surface of the body unit 1100 and performs a function of adjusting the energy supply level according to the mode operation, and the second adjustment button 1530 is the body unit 1100 . It can be arranged on the side of the to perform a function of adjusting the energy supply time according to the mode operation.

In addition, the counter electrode 1600 for the iontophoresis operation mode may be exposed on the side surface of the body part 1100 .

Here, the counter electrode 1600 may serve as a ground during the iontophoresis operation.

In addition, the skin care device 1000 of the present invention may further include a sensing unit 1300 disposed on the rear surface of the body unit 1100 to sense a skin state in contact with the body unit 1100 .

Also, the skin care device 1000 of the present invention may be charged through the charging unit 1700 .

Meanwhile, the control unit (not shown) may control the driving of the head unit 1200 .

For example, when the iontophoresis driving mode signal is input, the controller controls the power supply to apply the iontophoresis voltage to the head case of the head unit 1200 so that the head unit 1200 performs iontophoresis driving. can be controlled to do so.

Also, when an ultrasonic driving mode signal is input, the controller may control the power supply to apply an ultrasonic voltage to the vibrator of the head 1200 to control the head 1200 to perform ultrasonic driving.

In some cases, the controller may include a skin condition measuring unit that measures a skin condition based on a signal sensed by the sensing unit 1300 .

Here, the skin condition measuring unit may include a signal applying unit that processes the applied voltage and applies it to the sensing unit 1300 , and a signal measuring unit that measures the skin condition based on a signal sensed from the sensing unit 1300 . .

In addition, the present invention may further include a power supply unit, a first wiring, a second wiring, and a third wiring.

Here, the power unit may supply power to the head case 1210 and the vibrator 1220 under the control of the controller.

Next, the first wiring may be electrically connected between the head case 1210 and the power supply to apply an iontophoresis voltage.

Next, the second and third wires may be electrically connected between the vibrator 1220 and the power supply unit to apply an ultrasonic voltage.

Here, the second wire may apply a positive voltage to the vibrator 1220 , and the third wire may apply a negative voltage to the vibrator 1220 .

In addition, when the iontophoresis driving mode signal is input, the controller controls the power supply to apply the iontophoresis voltage to the head case 1210 of the head unit 1200 , and when the ultrasonic driving mode signal is input, the head The power supply unit may be controlled to apply an ultrasonic voltage to the vibrator 1220 of the unit 1200 .

As described above, the skin care device 1000 of the present invention configured as described above is capable of complexly performing an ultrasound mode, an iontophoresis mode, an ion derivation mode, a simultaneous execution mode of ultrasound and iontophoresis, and a simultaneous execution mode of ultrasound and ionization. can

Also, the skin care device 1000 of the present invention may transmit/receive data to and from an external device such as a mobile terminal through wireless communication.

That is, according to the present invention, by providing user skin condition information and user skin history information before and after use of the skin care device to an external device, the user's skin condition can be monitored and managed continuously.

4 and 5 are structural cross-sectional views showing the head of FIG. 2 .

FIG. 4 is a head part including an ultrasonic vibrator of about 350 KHz, and FIG. 5 shows a head part including an ultrasonic vibrator of about 280 KHz.

4 and 5 , the head unit 1200 may include a head case 1210 , a vibrator 1220 , and an insulating film 1230 .

Here, the head case 1210 may have a groove in the central region.

For example, the head case 1210 may be made of stainless steel having conductivity, but is not limited thereto.

Also, at least one of a height and a thickness of the head case 1210 may vary according to a thickness of the vibrator 1220 .

* For example, when the thickness of the vibrator 1220 is reduced, at least any one of the height and thickness of the head case 1210 may be reduced, and when the thickness of the vibrator 1220 is increased, the height of the head case 1210 and At least one of the thicknesses may increase.

In addition, the vibrator 1220 may be seated in the groove of the head case 1210 .

Here, the vibrator 1220 may output ultrasonic waves in a frequency band of about 20 KHz to about 500 KHz.

The reason for using the vibrator of a low frequency band is that it is excellent in the skin absorption promoting performance with respect to active ingredients, such as cosmetics.

A thickness t2 of the vibrator 1220 may be thicker than a thickness t1 of the head case 1210 .

The reason is that when the thickness of the vibrator 1220 becomes too thick, the frequency band of the vibrator 1220 decreases.

That is, the thickness and diameter of the vibrator 1220 and the shape and thickness of the head case 1210 may determine the resonance frequency of the vibrator 1220 .

In addition, the thickness and material of the insulating film 1230 disposed between the vibrator 1220 and the head case 1210 may also affect the resonant frequency of the vibrator 1220 .

For example, as the thickness t2 of the vibrator 1220 increases, the frequency band of the vibrator 1220 tends to decrease.

When the thickness t2 of the vibrator 1220 becomes thick, polarization is performed to produce a piezoelectric effect (a phenomenon in which the vibrator generates ultrasonic waves when a voltage is applied by inserting the vibrator between the electrodes, and a voltage is generated between the two poles when pressure is applied to the vibrator) Since it disappears, there is a limit to increasing the thickness of the vibrator 1220 .

Also, as the thickness t2 of the vibrator 1220 is thicker, Kp (electro-mechanical conversion efficiency) may be lowered, and thus the driving efficiency of the vibrator 1220 may be lowered.

Accordingly, the skin care device of the present invention may output ultrasonic waves in a low frequency band by adjusting the thickness, material, shape, etc. of the head case 1210 , the vibrator 1220 , and the insulating film 1230 .

For example, a thickness ratio between the head case 1210 and the vibrator 1220 may be 1:2 to 1:20.

Here, the thickness t2 of the vibrator 1220 may be about 1 mm to about 10 mm, but is not limited thereto.

In addition, the diameter D of the vibrator 1220 may be smaller than the diameter of the bottom surface of the groove of the head case 1210 .

Next, the vibrator 1220 may be non-contact with the head case 1210 .

The reason is that when the vibrator 1220 and the head case 1210 come into contact, the current flowing through the head case 1210 is applied to the vibrator 1220 during iontophoresis driving, so that the iontophoresis driving is not performed. because it doesn't

Also, the vibrator 1220 may be made of ceramic, but is not limited thereto.

Next, the insulating film 1230 may be disposed between the vibrator 1220 and the head case 1210 .

* Here, the thickness t3 of the insulating film 1230 may be thinner than the thickness t1 of the head case 1210 .

The reason is that if the thickness of the insulating film 1230 is too thick, the ultrasonic energy of the vibrator 1220 may be reduced.

For example, the thickness t3 of the insulating film 1230 may be about 10 μm to about 100 μm, but is not limited thereto.

Also, an area of the insulating film 1230 may be the same as a lower area of the vibrator 1220 facing the insulating film 1230 .

The reason is to electrically insulate between the vibrator 1220 and the head case 1210 and at the same time minimize the reduction in ultrasonic energy of the vibrator 1220 and output it.

In some cases, an area of the insulating film 1230 may be larger than a lower area of the vibrator 1220 facing the insulating film 1230 .

The reason is to securely insulate the vibrator 1220 and the head case 1210 electrically.

For example, the insulating film 1230 may be made of polyimide, but is not limited thereto.

As such, at least one of a height and a thickness of the head case 1210 may vary according to a thickness of the vibrator 1220 .

In addition, the thickness and diameter of the vibrator 1220 and the shape and thickness of the head case 1210 may determine the resonance frequency of the vibrator 1220 .

In addition, the thickness and material of the insulating film 1230 disposed between the vibrator 1220 and the head case 1210 may also affect the resonant frequency of the vibrator 1220 .

Therefore, in the present invention, by designing a skin care device in consideration of these structural conditions, ultrasonic driving and iontophoresis driving can be optimally performed.

Meanwhile, the skin care device of the present invention may further include a power supply unit, a first wire, a second wire, and a third wire.

Here, the power unit may supply power to the head case 1210 and the vibrator 1220 under the control of the controller.

Next, the first wiring may be electrically connected between the head case 1210 and the power supply to apply an iontophoresis voltage.

Next, the second and third wires may be electrically connected between the vibrator 1220 and the power supply unit to apply an ultrasonic voltage.

Here, the second wire may apply a positive voltage to the vibrator 1220 , and the third wire may apply a negative voltage to the vibrator 1220 .

In addition, when the iontophoresis driving mode signal is input, the controller controls the power supply to apply the iontophoresis voltage to the head case 1210 of the head unit 1200 , and when the ultrasonic driving mode signal is input, the head The power supply unit may be controlled to apply an ultrasonic voltage to the vibrator 1220 of the unit 1200 .

6A to 6D are views illustrating the head case of FIG. 4 .

Fig. 6A is a perspective view of the head case, Fig. 6B is a plan view of the head case, Fig. 6C is a side view of the head case, and Fig. 6D is a cross-sectional view of the head case.

6A to 6D , the head case 1210 may have a groove in the central region.

For example, the head case 1210 may be made of stainless steel having conductivity, but is not limited thereto.

In addition, at least one of a height and a thickness of the head case 1210 may vary according to the thickness of the vibrator.

For example, when the thickness of the vibrator decreases, at least one of the height and thickness of the head case 1210 may decrease, and when the thickness of the vibrator increases, at least one of the height and thickness of the head case 1210 increases. can do.

The reason is that the shape and thickness of the head case 1210 affect the resonant frequency of the vibrator.

For example, a thickness ratio of the head case 1210 and the vibrator may be 1:2 to 1:20.

Also, a diameter D1 of a lower portion of the groove of the head case 1210 may be smaller than a diameter D2 of an upper portion of the groove of the head case 1210 .

Next, the groove of the head case 1210 may include a bottom surface contacting the insulating film and a side surface extending upwardly from the bottom surface.

Here, the angle θ between the groove bottom surface and the groove side surface may be an obtuse angle.

In some cases, the boundary region between the groove bottom surface and the groove side surface may be a curved surface having a predetermined radius of curvature.

Also, the thickness t11 of the bottom surface of the groove and the thickness t12 of the side surface of the groove may be different from each other.

For example, the thickness t11 of the bottom surface of the groove may be thinner than the thickness t12 of the side surface of the groove.

The reason is to minimize the reduction in the ultrasonic energy of the vibrator to output it.

In addition, the thickness t11 of the bottom surface of the groove may be determined according to the thickness of the vibrator.

That is, the thickness t11 of the bottom surface of the groove and the thickness of the vibrator may be varied in proportion to each other.

For example, the thickness t11 of the bottom surface of the groove may be about 0.5 mm to about 2 mm.

In addition, a fastening groove 1212 for fastening to the body portion may be formed on the upper portion of the groove side of the head case 1210 .

7 is a graph showing the relative absorption rate of the active ingredient according to the ultrasonic output of the skin care device according to the present invention.

7 shows the experimental results of the component absorption rate 24 hours after applying the vitamin component, which is an evaluation component, to the user's skin using the device of the present invention.

7, when a device outputting ultrasonic waves of about 280 KHz is applied, it can be seen that the component absorption rate is about 188%, and when a device outputting ultrasonic waves of about 350 KHz is applied, the component absorption rate is about 313% It can be seen that appears as

That is, as a result of applying the device of the present invention, it shows a high component absorption rate compared to the relative absorption rate without treatment.

8 and 9 are views showing the sensing unit of FIG. 3 .

8 is a plan view of the sensing unit 1300 , and FIG. 9 is a cross-sectional view of the sensing unit 1300 .

As shown in FIGS. 8 and 9 , the sensing unit 1300 may be disposed on the rear surface of the body to sense a skin state in contact with it.

Here, the sensing unit 1300 may include a substrate 1330 and first and second electrodes 1310 and 1320 .

The first electrode 1310 may be formed on the substrate 1330 and applied with a voltage, and the second electrode 1320 may be connected to the first electrode 1310 to output a voltage that varies according to skin contact. .

For example, the second electrode 1320 may have a meander structure.

In addition, the thickness t21 of the second electrode 1320 may be about 250um to about 450um, but is not limited thereto.

In some cases, the first and second electrodes 1310 and 1320 may be formed of gold plating.

Next, the controller may measure the skin condition based on the signal sensed by the sensing unit 1300 .

That is, the controller may measure a voltage drop due to the skin impedance from the sensing unit 1300 .

Here, the controller may include a skin condition measuring unit for measuring a skin condition from the sensing signal of the sensing unit 1300 .

10 to 13 are block diagrams for explaining a skin condition measurement unit.

10 to 13 , the skin condition measurement unit 2000 may largely include a signal application unit 2200 and a signal measurement unit 2400 .

Here, the signal applying unit 2200 may signal-process the applied voltage and apply it to the sensing unit 2300 .

For example, the signal applying unit 2200 includes a first digital-analog converter 2210 that converts a digital signal of an applied voltage into an analog signal, and amplifies the converted analog signal and applies it to the sensing unit 2300 . A first amplifier 2220 may be included.

In addition, the signal measuring unit 2400 may measure the skin condition based on the signal sensed by the sensing unit 2300 .

For example, the signal measuring unit 2400 may include a comparator 2410 , a second amplifying unit 2420 , a filter unit 2430 , and a second analog-to-digital converter 2440 .

Here, the comparator 2410 may compare an input signal applied to the sensing unit 2300 with an output signal output from the sensing unit 2300 .

In addition, the second amplifying unit 2420 amplifies the output signal output from the comparator 2410 , and the filter unit 2430 may remove noise from the signal amplified by the second amplifying unit 2420 . .

Next, the second analog-to-digital conversion unit 2440 may convert the analog signal output from the filter unit 2430 into a digital signal.

In some cases, the skin condition measurement unit 2000 may further include a power supply unit 2100 , a sensing unit 2300 , a display unit 2500 , and a skin measurement control unit 2600 .

Here, the power supply unit 2100 applies a voltage to the signal application unit 2200 according to the control signal of the skin measurement control unit 2600, and the sensing unit 2300, when the voltage is input from the signal application unit 2200 The skin condition can be sensed.

In addition, the display unit 2500 may display the skin condition result measured by the signal measurement unit 2400 according to the control signal of the skin measurement control unit 2600 .

Next, the skin measurement control unit 2600 may control the power supply unit 2100 , the signal application unit 2200 , the sensing unit 2300 , the signal measurement unit 2400 , and the display unit 2500 .

Also, the skin condition measurement unit 2000 may further include a timer 2700 .

Here, the timer 2700 is, according to a control signal of the skin measurement controller, a first set time for preparing for skin measurement, a second set time for skin measurement according to skin contact, and for terminating skin measurement according to skin non-contact A third set time can be measured.

For example, when a skin measurement mode signal is input, the skin measurement control unit 2600 measures a reference value according to the skin non-contact from the sensing unit 2300 and, based on the reference value, determines whether the sensing unit 2300 is in contact with the skin. can

14 is a graph showing reference values according to skin non-contact.

As shown in FIG. 14 , the skin measurement control unit 2600 measures a reference value according to the skin non-contact from the sensing unit 2300 , and when the skin comes into contact with the sensing unit 2300 , the measured value and the reference value according to the skin contact By comparing the values, the presence or absence of skin contact can be determined according to the difference value.

In addition, the skin measurement controller 2600 may measure the skin impedance when the skin comes into contact with the sensing unit 2300 .

That is, at both ends of the electrodes of the sensing unit 2300 , a voltage drop occurs due to skin impedance according to skin contact.

Accordingly, the skin measurement controller 2600 may measure the amount of skin moisture at a voltage drop level according to the skin impedance.

The skin measurement process is described as follows.

When the skin measurement mode is performed by clicking the skin measurement button, the skin measurement control unit 2600 may control the power supply unit 2100 to supply a voltage.

Next, the signal applying unit 2200 converts the digital signal of the applied voltage into an analog signal, amplifies the converted analog signal and applies it to the sensing unit 2300 .

Here, the frequency waveform output from the signal applying unit 2200 may be a square wave or a sine wave having a constant amplitude in the range of about 500 Hz to about 10 KHz.

In addition, the signal measuring unit 2400 measures a reference value according to the skin non-contact from the sensing unit 2300 .

That is, the signal measuring unit 2400 may measure a reference value in the standby state and convert the measured reference value from an analog signal to a digital signal.

Next, when the measurement of the reference value is completed, the skin measurement controller 2600 may wait for about 2 seconds to wait for skin contact after notifying the user that the measurement start is completed.

In addition, the skin measurement controller 2600 may check whether the skin is in contact with the sensing unit 2300 , and when the skin is in contact, the skin measurement controller 2600 may measure the skin condition based on a signal sensed from the sensing unit 2300 .

Here, when the skin measurement controller 2600 increases by about 5% from the reference value of the standby state, it may be determined as skin contact.

If the skin contact is not determined for about 10 seconds, it may be recognized as an error and the skin measurement may be terminated.

In addition, the skin measurement controller 2600 may measure the amount of skin moisture after about 5 seconds when it is determined that the skin is in contact.

Then, the skin measurement controller 2600 may end the skin measurement when the skin contact is separated from the sensing unit 2300 within about 5 seconds after the skin contact.

Next, when the skin measurement is completed, the skin measurement control unit 2600 may display a measurement completion notification on the display unit 2500 .

Here, the display unit 2500 may display the skin moisture level based on the measured skin moisture content.

In addition, the skin measurement control unit 2600 may end the skin moisture content measurement process when the skin measurement result is displayed.

15 is a diagram showing a skin measurement result, and FIG. 16 is a graph showing a voltage level according to the amount of skin moisture.

15 and 16 , the skin care device of the present invention may measure a user's skin condition through a sensing unit and display the measurement result.

For example, the skin moisture state may be classified according to a voltage level calculated based on the skin impedance measured by the sensing unit.

That is, it can be seen that the voltage level decreases as the skin impedance increases, and the moisture content of the skin increases as the voltage level decreases.

Based on this, in the present invention, the skin moisture state can be divided into very dry, dry, normal, moist, very moist, and the like.

Accordingly, the present invention can provide user convenience by notifying the user of the skin condition measurement result through the display screen immediately.

17 is a flowchart illustrating a method for measuring skin of a skin care device according to the present invention.

As shown in FIG. 17 , when a skin measurement mode signal is input, the controller of the present invention checks whether power is applied to the sensing unit. (S10)

Then, when power is applied to the sensing unit, the control unit measures a reference value according to the non-contact skin from the sensing unit. (S20)

Next, the control unit checks whether the first set time has elapsed. (S30)

Then, when the first set time elapses, the control unit completes the skin measurement preparation. (S40)

* Here, the control unit may display a notification on the display unit notifying the completion of skin measurement preparation.

Next, the control unit checks whether the skin is in contact with the sensing unit. (S50)

Next, when the skin is in contact, the controller measures the contacted skin state (S60).

Here, when the skin is in contact with the sensing unit, the controller may measure the skin impedance and measure the amount of skin moisture with a voltage drop level according to the skin impedance.

However, if the skin does not come into contact with the sensing unit, the controller may check whether a third set time has elapsed (S100), and when the third set time has elapsed, the skin measurement may be terminated.

Then, the control unit checks whether the second set time has elapsed. (S70)

Then, when the second set time elapses, the control unit completes the skin condition measurement. (S80)

Next, the controller may display the measured skin condition result. (S90)

As described above, in the present invention, by arranging a vibrator of a low frequency band in the head portion to provide ultrasonic energy of a low frequency band, it is possible to improve skin absorption of active ingredients.

In addition, in the present invention, by arranging an insulating film between the vibrator and the head case, ultrasonic driving and iontophoresis driving can be performed in combination.

In addition, in the present invention, by adjusting the thickness ratio between the vibrator and the head case, tinnitus does not occur even in a low frequency band and the overall size can be reduced.

In addition, the present invention can provide user convenience by arranging a sensing unit for measuring a skin condition, measuring and displaying an individual skin condition.

The skin care device and the method for measuring skin thereof according to the present invention are not limited to the configuration and method of the described embodiments as described above, but the embodiments are all or all of the embodiments so that various modifications can be made. Some of them may be selectively combined and configured.

In addition, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims In addition, various modifications are possible by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

Claims (17)

In the skin care device,
Body portion forming an appearance;
a head portion protruding in the front direction of the body portion and driven by at least one of ultrasonic driving and iontophoresis driving; And,
A control unit for controlling the driving of the head unit,
The head part,
a head case having a groove in the central area;
a vibrator adjacent to the head case; And,
Including an insulating film disposed between the vibrator and the head case,
The vibrator outputs ultrasonic waves in a frequency band of 20KHz to 500KHz,
The thickness ratio of the head case and the vibrator is 1:2 to 1:20,
The thickness of the vibrator is 1mm ~ 10mm,
An area of the insulating film is substantially the same as a lower area of the vibrator facing the insulating film,
The groove of the head case includes a bottom surface in contact with the insulating film and a side surface extending upwardly from the bottom surface,
The thickness of the bottom surface of the groove is thinner than the thickness of the side of the groove,
The thickness of the bottom surface of the groove is a skin care device, characterized in that 0.5mm ~ 2mm. The method of claim 1,
a power supply unit for supplying power to the head case and the vibrator under the control of the control unit;
a first wiring electrically connected between the head case and the power supply unit to apply an iontophoresis voltage; and
and second and third wires electrically connected between the vibrator and the power source to apply an ultrasonic voltage. The method of claim 1,
The vibrator is a skin care device, characterized in that it is seated in the groove of the head case. 4. The method of claim 3,
A diameter of the vibrator is smaller than a diameter of a groove bottom surface of the head case. According to claim 1,
The vibrator is a skin care device, characterized in that non-contact with the head case. According to claim 1,
The thickness of the insulating film, skin care device, characterized in that thinner than the thickness of the head case. According to claim 1,
A diameter of a lower portion of the groove of the head case is smaller than a diameter of an upper portion of the groove of the head case. According to claim 1,
The angle between the groove bottom surface and the groove side surface is an obtuse angle. According to claim 1,
When the iontophoresis driving mode signal is input, the control unit controls the power supply unit to apply the iontophoresis voltage to the head case of the head unit,
When the ultrasonic driving mode signal is input, the skin care device according to claim 1, wherein the power supply unit is controlled to apply the ultrasonic voltage to the vibrator of the head unit. According to claim 1,
The skin care device according to claim 1, further comprising: a sensing unit disposed on the rear surface of the body unit to sense a skin state in contact with the body unit. 11. The method of claim 10,
The control unit, based on the signal sensed by the sensing unit, skin care device, characterized in that it comprises a skin condition measuring unit for measuring the skin condition. 12. The method of claim 11,
The skin condition measurement unit,
a signal applying unit that processes the applied voltage and applies it to the sensing unit; And,
and a signal measuring unit measuring a skin condition based on the signal sensed by the sensing unit. 13. The method of claim 12,
The signal applying unit,
a first digital-to-analog converter converting the digital signal of the applied voltage into an analog signal; And,
and a first amplifier for amplifying the converted analog signal and applying it to the sensing unit. 13. The method of claim 12,
The signal measuring unit,
a comparator for comparing an input signal applied to the sensing unit with an output signal output from the sensing unit;
a second amplifier for amplifying the output signal output from the comparator;
a filter unit for removing noise of the signal amplified from the second amplifying unit; And,
and a second analog-to-digital converter for converting the analog signal output from the filter part into a digital signal. 13. The method of claim 12,
The skin condition measurement unit,
a power supply unit for applying a voltage to the signal application unit;
a sensing unit sensing the skin condition when a voltage is input from the signal applying unit;
a display unit for displaying the skin condition result measured by the signal measuring unit; And,
and a skin measurement control unit for controlling the power supply unit, the signal applying unit, the sensing unit, the signal measuring unit, and the display unit. 16. The method of claim 15,
According to the control signal of the skin measurement controller, a first set time for preparing for skin measurement, a second set time for skin measurement according to skin contact, and a third set time for terminating skin measurement according to skin non-contact are measured. Skin care device, characterized in that it further comprises a timer. 15. The method of claim 14,
The skin measurement control unit, when a skin measurement mode signal is input, measures a reference value according to the skin non-contact from the sensing unit, and determines whether the sensing unit is in contact with the skin based on the reference value.

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