KR20190100258A - Skin care device and its skin measuring method - Google Patents

Abstract

The present invention relates to a skin care device and a method for measuring skin thereof, in which a user's convenience is further considered. A head portion for driving and a control portion for controlling the driving of the head portion, wherein the head portion includes a head case having a groove in the center region, an oscillator seated in the groove of the head case, and an insulating film disposed between the vibrator and the head case. 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 its skin measuring method

The present invention relates to a skin care device and a method for measuring skin thereof, which are further considered by the user.

Devices for skin beauty are implemented in various ways. The skin is subjected to a minute stimulus to change the activity of the cells and the like can bring about the skin improvement effect such as wrinkle improvement, whitening.

Among them, there are non-invasive methods of giving electrical stimulation to the skin and non-invasive methods of giving physical stimulation.

Conventionally, portable devices have not been widely available. However, as portable communication devices have been developed and components have been miniaturized in recent years, portable care devices have been commercially available.

Examples of the method of treating the skin through electrical stimulation include an electrical stimulus in a high frequency band and an optical stimulus in a visible light region.

The stimulation of the high frequency band is to give a high frequency energy of 1MHz band to give a stimulation to the skin surface and the core of the human body, respectively.

However, the conventional high frequency band skin care device has a problem of lack of cosmetic absorption promoting performance, the low frequency band skin care device has a limit in miniaturizing the skin care device because the oscillator diameter and thickness size of the vibrator portion is large.

In addition, the skin care device of the low frequency band has a problem of generating tinnitus due to a resonance phenomenon when generating a vibration close to the audible frequency band.

Accordingly, there is a demand for development of a skin care device that can be miniaturized without tinnitus occurring in the low frequency band in the future.

It is an object of the present invention to solve the above and other problems. Still another object is to provide a skin care device and a method for measuring skin thereof, which can arrange a vibrator in a low frequency band to provide ultrasonic energy in a low frequency band.

Still another object is to provide a skin care device and a method for measuring skin thereof, which can perform a combination of ultrasonic drive and iontophoresis drive by disposing an insulating film between the vibrator and the head case.

Still another object is to provide a skin care device and a method for measuring the skin thereof, by adjusting the thickness ratio between the vibrator and the head case and miniaturizing the tinnitus without causing tinnitus even in a low frequency band.

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

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 above will be clearly understood by those skilled in the art from the following description. Could be.

In order to solve the above technical problem, the skin care device according to an embodiment of the present invention, the body portion forming the appearance, protrudes in the front direction of the body portion, ultrasonic drive and iontophoresis drive (iontophoresis) drive And a control unit for controlling the driving of the head unit, wherein the head unit includes a head case having a groove in a central region, a vibrator seated in a groove of the head case, between the vibrator and the head case. It may include an insulating film disposed.

The skin measurement method of the skin care device according to an embodiment of the present invention, when the skin measurement mode signal is input, checking whether the power is applied to the sensing unit, measuring a reference value according to the non-contact skin, 1) checking whether the set time has elapsed; and, if the first set time has elapsed, completing preparation for skin measurement; checking whether the skin contacts the sensing unit; It may include the step of measuring, checking whether the second set time elapses, completing the skin condition measurement when the second set time elapses, and displaying the measured skin condition results .

The effects of the skin care device and skin measurement method thereof according to the present invention will be described below.

According to at least one of the embodiments of the present invention, by placing the low frequency band oscillator on the head portion to provide the ultrasonic energy of the low frequency band, it is possible to improve the skin absorption for the active ingredient.

According to at least one of the embodiments of the present invention, by disposing an insulating film between the vibrator and the head case, it is possible to perform a combination of ultrasonic drive and iontophoresis drive.

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, it is possible to miniaturize the overall size without the occurrence of tinnitus even in the low frequency band.

In addition, according to at least one of the embodiments of the present invention, by providing a sensing unit for measuring the skin condition, by measuring and displaying the individual skin condition, it is possible to provide user convenience.

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

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.
6A through 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 illustrating the sensing unit of FIG. 3.
10 to 13 are block diagrams for explaining the skin condition measuring unit.
14 is a graph showing reference values according to skin non-contact.
15 is a view showing a result of skin measurement, and FIG. 16 is a graph showing voltage levels according to skin moisture content.
17 is a flowchart illustrating a skin measurement method of a skin care device according to the present invention.

Best Mode for Carrying Out the Invention

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed herein by the accompanying drawings, all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprises" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

As shown in FIG. 1, the skin care device 100 may include a wireless communication unit 110, an input unit 120, a sensing unit 130, an output unit 140, an interface unit 150, a memory 160, The controller 170 and the power supply unit 180 may be included.

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

More specifically, the wireless communication unit 110 of the components, between the skin care device 100 and the wireless communication system, between the skin care device 100 and another external terminal, or the skin care device 100 and the external server It may include one or more modules that enable wireless communication therebetween. 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, and NFC. (Near Field Communication), at least one of Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) technology can be used to support short-range communication. The short-range communication module 112 may be configured between the skin care device 100 and the wireless communication system, between the skin care device 100 and another skin care device 100, or the skin through a wireless area network. Wireless communication between the care device 100 and a network in which the other skin care device 100 or an external server is located may be supported. The short range wireless communication network may be short range wireless personal area networks.

Here, the other external terminal is a mobile terminal or a wearable device capable of exchanging (or interworking) data with the skin care device 100 according to the present invention (eg, smartwatch, smart It can be a glass (smart glass), a head mounted display (HMD). The short range communication module 112 may detect (or recognize) a mobile terminal or a wearable device that can communicate with the skin care device 100 around the skin care device 100. Further, when the detected mobile terminal or wearable device is a device authenticated to communicate with the skin care device 100 according to the present invention, the controller 170 may include at least a part of data processed by the skin care device 100. The short range communication module 112 may transmit the data to the mobile terminal or the wearable device. Therefore, the user of the mobile terminal or wearable device can use the data processed by the skin care device 100 through the mobile terminal or the wearable device. Alternatively, the skin care device 100 may receive a processed data through a mobile terminal or a wearable device to perform a specific operation.

For example, the skin care device 100 transmits data about the skin condition measured to the mobile terminal or wearable device, and makes a database to identify the trend of skin condition change and feed back the data to drive the skin care device again. 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), UWB (Ultra Wideband), ZigBee, Near Field Communication (NFC), A short range communication technology such as a wireless universal serial bus (USB) may be applied.

Among these, the NFC module provided in the skin care device 100 supports contactless 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 a card mode, the skin care device 100 may further include a security module that stores 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 a skin care device. (Eg, embeded Secure Element (SE)). Data exchange based on a single wire protocol (SWP) 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 card information stored like a conventional IC card to the outside.

When the NFC module is operated in the reader mode, the skin care device may read data from an external tag. In this case, the data received from the tag by the skin care device may be coded in a data exchange format (NFC 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 mode, the skin care device 100 may perform P2P communication with another device. In this case, LLCP (Logical Link Control Protocol) may be applied to P2P communication. A connection may be generated between the skin care device 100 and another external terminal for P2P communication. In this case, the generated connection may be classified into a connectionless mode in which one packet is exchanged and terminated, and a connection-oriented mode in which packets are continuously exchanged. Through P2P communication, data and setup parameters for Bluetooth and Wi-Fi connections can be exchanged. However, since the available distance of NFC communication is short, the P2P mode may be effectively used for exchanging small data.

The location information module 113 is a module for acquiring the location (or current location) of the skin care device 100. Examples of the location information module 113 include a global positioning system (GPS) module or a wireless fidelity (WiFi) module. For example, when the skin care device 100 utilizes a GPS module, the skin care device 100 may acquire a location of the skin care device 100 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 access point (AP) that transmits or receives a Wi-Fi module and a wireless signal. To obtain the position of. If necessary, the location information module 115 may perform any function of the other modules of the wireless communication unit 110 in order to obtain data regarding the location of the skin care device 100. 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 may include a camera 121 or an image input unit for inputting an image signal, a user input unit 122 (eg, a touch key, a mechanical key, etc.) for receiving information from a user). It 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 image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing 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 object with respect to a 3D stereoscopic image. The photo sensor may be stacked on the display element, which is configured to scan the movement of the sensing object in proximity to the touch screen. More specifically, the photo sensor mounts a photo diode and a transistor (TR) in a row / column and scans contents mounted on the photo sensor by using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor calculates coordinates of the sensing object according to the amount of light change, and thus, the position information of the sensing object can be obtained.

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, the photographed skin surface state may be output to the user.

The user input unit 122 is for receiving information from a user. When information is input through the user input unit 122, the controller 170 may control an operation of the skin care device 100 to correspond to the input information. have. The user input unit 122 may include a mechanical input unit (or a mechanical key, for example, buttons, dome switches, and jog wheels located on the front, rear, or side surfaces of the skin care device 100). , Jog switch, etc.) and touch input means. As an example, the touch input means may include a virtual key, a soft key, or a visual key displayed on the touch screen through a software process, or a portion other than the touch screen. It may be made of a touch key disposed in the. The virtual key or the visual key may be displayed on the touch screen while having various forms, for example, graphic, text, icon, video, or the like. It can be made of a combination of.

The sensing unit 130 may include one or more sensors for sensing at least one of information in the skin care device 100, surrounding environment information 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. G-sensor, Gyroscope Sensor, Motion Sensor 133, Motion Sensor, RGB Sensor, Infrared Sensor, Infrared Sensor, Fingerprint Sensor, Ultrasonic Sensor sensor, optical sensor (e.g. camera 121), microphone, battery gauge, environmental sensor (e.g. barometer, hygrometer, thermometer, radiation detection sensor, heat sensing Sensor, gas detection sensor, etc.), chemical sensor (eg, electronic nose, healthcare sensor, biometric sensor, etc.). Meanwhile, the skin care device 100 disclosed herein may use a combination of information sensed by at least two or more of these sensors.

The sensing unit 130 senses at least one of information in 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 driving or operation of the skin care device 100 or perform data processing, function or operation 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 present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. The proximity sensor 131 may be disposed in the 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 photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is capacitive, the proximity sensor 131 may be configured to detect the proximity of the object by the change of the electric field according to the proximity of the conductive 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 explanation, an action of allowing the object to be recognized without being in contact with the touch screen so that the object is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching an object on a screen is called a "contact touch." The position at which the object is in close proximity touch on the touch screen means a position where the object is perpendicular to the touch screen when the object is in close proximity touch. The proximity sensor 131 may detect a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). have. Meanwhile, as described above, the controller 170 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern detected by the proximity sensor 131, and further, provides visual information corresponding to the processed data. It can be output on the touch screen. Furthermore, the controller 170 may control the skin care device 100 to process different operations or data (or information) according to whether the touch on the same point on the touch screen is a proximity touch or a touch touch. have.

The touch sensor applies 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 portion of the touch screen or capacitance generated at the specific portion into an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the touch, a capacitance at the touch, and the like, when the touch object applying the touch on the touch screen is touched on the touch sensor. Here, the touch object is an object applying a touch to the touch sensor and may be, for example, a finger, a touch pen or a stylus pen, a pointer, or the like.

The controller 170 may perform different control or 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 control or the same control according to the type of touch object may be determined according to the operation state of the current skin care device 100 or an application program being executed.

Meanwhile, the touch sensor and the proximity sensor described above may be independently or combined, and may be a short (or tap) touch, a long touch, a multi touch, a drag touch on a touch screen. ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, etc. A touch can be sensed.

The ultrasonic sensor may recognize location information of a sensing object using ultrasonic waves. Meanwhile, the controller 170 may calculate the position of the wave generation source through the information detected by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the property that the light is much faster than the ultrasonic wave, that is, the time that the light reaches the optical sensor is much faster than the time when the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generation source may be calculated using a time difference from the time when the ultrasonic wave reaches the light as the reference signal.

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

The output unit 140 is used to generate an output related to sight, hearing, 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 forms a layer structure with or is integrally formed with the touch sensor, thereby implementing a touch screen. The touch screen may function as a user input unit 122 that provides an input interface between the skin care device 100 and the user, and may also 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 execution screen information of an application program driven by the skin care device 100 or UI (User Interface) or GUI (Graphic User Interface) information according to the execution screen information. have.

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

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 that are run on the skin care device 100, data for operating the skin care device 100, and instructions. At least some of these applications may be downloaded from an external server via wireless communication. In addition, 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 and installed on the skin care device 100, and may be driven by the controller 170 to perform an operation (or function) of the skin care device 100. have.

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

The controller 170 may be a concept used interchangeably with a controller to be described later.

The controller 170 may control at least some of the components described with reference to FIG. 1 to drive an application program stored in the memory 160. In addition, 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 to drive the application program.

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

At least some of the components may operate in cooperation with each other to implement the operation, control, or control method of the skin care device 100. In addition, 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.

2 is a view showing the front portion of the skin care device, Figure 3 is a view showing the back portion of the skin care device.

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

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

The head portion 1200 may protrude in the front direction of the body portion 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 center 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 the frequency band of about 20 KHz to about 500 KHz.

The reason for using the vibrator in the low frequency band in the present invention is because of 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 is a screen for displaying an operation mode of the current skin care device. For example, the mode selection display unit 1410 may display an operation mode selected from an ultrasound mode, an iontophoresis mode, a skin measurement mode, a wireless communication mode, and the like. have.

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

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 may include an ultrasound mode, an iontophoresis mode, a skin measurement mode, Wireless communication modes and the like.

In addition, the mode operation unit may perform a function of starting or stopping a mode operation selected from the mode selection unit.

In some cases, the front of the body portion 1000 may further include a display unit for displaying the energy supply level and the supply time.

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

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

Here, the first adjustment button 1520 is disposed on the side of the body portion 1100 to perform a function of adjusting the energy supply level according to the mode operation, the second adjustment button 1530, the body portion 1100 Is disposed on the side of the to perform the function of adjusting the energy supply time according to the mode operation.

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

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

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 of contact.

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

The controller (not shown) may control the driving of the head unit 1200.

For example, when the iontophoresis drive mode signal is input, the controller controls the power supply unit to apply the iontophoresis voltage to the head case of the head unit 1200, thereby causing the head unit 1200 to drive the iontophoresis drive. Can be controlled to perform.

In addition, when the ultrasonic driving mode signal is input, the controller may control the power unit to apply the ultrasonic voltage to the vibrator of the head unit 1200 to control the head unit 1200 to perform the 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 for signal processing the applied voltage to the sensing unit 1300 and a signal measuring unit measuring the skin state based on the signal sensed by 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 supply unit may supply power to the head case 1210 and the vibrator 1220 under the control of the controller.

Subsequently, the first wiring may be electrically connected between the head case 1210 and the power supply unit 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 wiring may apply a positive voltage to the vibrator 1220, and the third wiring may apply a negative voltage to the vibrator 1220.

The controller may control the power supply unit to apply the iontophoresis voltage to the head case 1210 of the head unit 1200 when the iontophoresis drive mode signal is input, and when the ultrasonic drive mode signal is input, 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 may be configured to perform a combination of an ultrasound mode, an ion introduction mode, an ion derivation mode, a simultaneous performing mode of ultrasound and ion introduction, a simultaneous performing mode of ultrasound and ion derivation, and the like. Can be.

In addition, the skin care device 1000 of the present invention may transmit / receive data with an external device such as a mobile terminal through wireless communication.

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

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

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

As shown in FIGS. 4 and 5, the head part 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 center area.

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 the height and thickness of the head case 1210 may vary according to the thickness of the vibrator 1220.

For example, when the thickness of the vibrator 1220 is thin, at least one of the height and thickness of the head case 1210 may decrease, and when the thickness of the vibrator 1220 is thick, the height and thickness of the head case 1210 may be reduced. At least one of the may increase.

The vibrator 1220 may be seated in a 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 why the low frequency band vibrator is used is because of excellent skin absorption promoting performance for active ingredients such as cosmetics.

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

The reason is that if 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 the material of the insulating film 1230 disposed between the vibrator 1220 and the head case 1210 may also affect the resonance frequency of the vibrator 1220.

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

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

In addition, the thicker the thickness t2 of the vibrator 1220, the lower the Kp (electro-mechanical conversion efficiency) and the lower the driving efficiency of the vibrator 1220.

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

For example, the thickness ratio of 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 groove bottom surface of the head case 1210.

Subsequently, the vibrator 1220 may be in contact with the head case 1210.

The reason is that when the vibrator 1220 and the head case 1210 are in contact with each other, when driving the iontophoresis, the current flowing through the head case 1210 is applied to the vibrator 1220 so that the iontophoresis driving is not performed. Because it does not.

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

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

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

The area of the insulating film 1230 may be the same as the 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 to minimize and reduce the ultrasonic energy reduction of the vibrator 1220.

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

The reason for this is to electrically and reliably insulate between the vibrator 1220 and the head case 1210.

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

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

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 the material of the insulating film 1230 disposed between the vibrator 1220 and the head case 1210 may also affect the resonance frequency of the vibrator 1220.

Accordingly, the present invention can optimally perform ultrasonic drive and iontophoresis drive by designing a skin care device in consideration of such structural conditions.

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

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

Subsequently, the first wiring may be electrically connected between the head case 1210 and the power supply unit 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 wiring may apply a positive voltage to the vibrator 1220, and the third wiring may apply a negative voltage to the vibrator 1220.

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

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

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 sectional view of the head case.

As shown in FIGS. 6A to 6D, the head case 1210 may have a groove in a central area.

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 the height and thickness of the head case 1210 may vary according to the thickness of the vibrator.

For example, when the thickness of the vibrator is thin, at least one of the height and thickness of the head case 1210 may be reduced, and when the thickness of the vibrator is thick, at least one of the height and thickness of the head case 1210 is increased. can do.

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

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

In addition, the diameter D1 of the lower portion of the groove of the head case 1210 may be smaller than the diameter D2 of the upper portion of the groove of the head case 1210.

Subsequently, the groove of the head case 1210 may include a bottom surface contacting the insulating film and a side surface extending upward 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 area between the groove bottom surface and the groove side surface may be a curved surface having a predetermined radius of curvature.

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

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

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

The thickness t11 of the groove bottom surface may be determined according to the thickness of the vibrator.

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

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

In addition, a fastening groove 1212 may be formed at an upper portion of the groove side surface of the head case 1210 to fasten the body portion.

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.

Figure 7 shows the results of the experiment on the component absorption rate 24 hours after applying the vitamin component of the evaluation component to the user's skin using the device of the present invention.

As shown in FIG. 7, when the apparatus for outputting ultrasonic waves of about 280KHz is applied, the component absorption rate is about 188%. When the apparatus for outputting ultrasonic waves of about 350KHz is applied, the component absorption ratio is about 313%. It can be seen that.

That is, as a result of applying the device of the present invention, it shows a high component absorption compared to the non-treatment reference relative absorption.

8 and 9 are views illustrating 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 illustrated 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 the body.

The sensing unit 1300 may include a substrate 1330, 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 the contact of the skin. .

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

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

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

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

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

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

10 to 13 are block diagrams for explaining the skin condition measuring unit.

10 to 13, the skin condition measurer 2000 may largely include a signal applicator 2200 and a signal measurer 2400.

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

For example, the signal applying unit 2200 may convert the digital signal of the applied voltage into an analog signal, and the first digital-analog converter 2210 and amplify the converted analog signal to the sensing unit 2300. It may include a first amplifier 2220.

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 measurer 2400 may include a comparator 2410, a second amplifier 2420, a filter 2430, and a second analog-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.

The second amplifier 2420 may amplify the output signal output from the comparator 2410, and the filter 2430 may remove noise of the signal amplified from the second amplifier 2420. .

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

In some cases, the skin condition measuring 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, when the power supply unit 2100 applies a voltage to the signal applying unit 2200 according to the control signal of the skin measurement control unit 2600, and the sensing unit 2300 receives a voltage from the signal applying unit 2200. You can sense the skin condition.

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

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

In addition, the skin condition measurer 2000 may further include a timer 2700.

Here, the timer 2700, according to the control signal of the skin measurement control unit, the first setting time for preparing the skin measurement, the second setting time for measuring the skin in accordance with the skin contact, and for the end of skin measurement according to the non-skin contact The third set time can be measured.

As an example, when the skin measurement mode signal is input, the skin measurement controller 2600 may measure a reference value according to non-skin contact from the sensing unit 2300, and determine whether the sensing unit 2300 contacts the skin based on the reference value. Can be.

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

As shown in FIG. 14, the skin measurement controller 2600 measures a reference value according to non-skin contact from the sensing unit 2300, and when the skin contacts the sensing unit 2300, the measured value and reference value according to skin contact. By comparing the results, it is possible to know whether the skin is in contact with the difference value.

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

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

Therefore, the skin measurement control unit 2600 may measure the amount of skin moisture at a voltage drop level according to skin impedance.

The skin measurement process is described as follows.

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

Subsequently, 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 sinusoidal file having a constant amplitude in the range of about 500 Hz to about 10 KHz.

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

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

Next, when the reference value measurement is completed, the skin measurement control unit 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 with the skin, the skin measurement control unit 2600 may measure the skin state based on the signal sensed by the sensing unit 2300.

Here, the skin measurement controller 2600 may determine skin contact when the skin measurement controller 2600 increases by about 5% from the reference value in the standby state.

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.

The skin measurement controller 2600 may measure the skin moisture after about 5 seconds when it is determined that the skin is in contact with the skin.

Subsequently, the skin measurement controller 2600 may terminate 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 amount.

The skin measurement controller 2600 may terminate the skin moisture amount measurement processor when the skin measurement result is displayed.

15 is a view showing a result of skin measurement, and FIG. 16 is a graph showing voltage levels according to skin moisture content.

As shown in FIG. 15 and FIG. 16, the skin care device of the present invention may measure a skin condition of a user through a sensing unit and display a measurement result.

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

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

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

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

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

As shown in FIG. 17, when the skin measurement mode signal is input, the controller checks whether power is applied to the sensing unit.

Subsequently, when power is applied to the sensing unit, the controller measures a reference value according to non-contact with the skin from the sensing unit.

Next, the controller checks whether the first setting time has elapsed. (S30)

When the first set time elapses, the controller completes preparation for skin measurement. (S40)

Here, the controller may display a notification indicating that the skin measurement preparation is completed on the display unit.

Next, the controller checks whether the skin contacts the sensing unit. (S50)

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

Here, when the skin is in contact with the sensing unit, the control unit may measure the skin impedance and measure the amount of skin moisture at 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 determine whether the third set time elapses (S100), and when the third set time elapses, the skin measurement may be terminated.

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

Subsequently, when the second set time elapses, the controller completes skin condition measurement. (S80)

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

As described above, the present invention can improve the skin absorption promotion to the active ingredient by disposing the vibrator in the low frequency band to provide the ultrasonic energy in the low frequency band.

In addition, the present invention, by disposing the insulating film between the vibrator and the head case, it is possible to perform a combination of ultrasonic drive and iontophoresis drive.

In addition, the present invention adjusts the thickness ratio between the vibrator and the head case, and can reduce the overall size without causing tinnitus even in the low frequency band.

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

Embodiment for Invention

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

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

The present invention relates to a skin care device and a method for measuring skin thereof. Therefore, the present invention has industrial applicability.

Claims (20)

A body part forming an appearance;
A head portion protruding in the front direction of the body portion and driving at least one of ultrasonic driving and iontophoresis driving; And,
A control unit for controlling driving of the head unit,
The head portion,
A head case having a groove in the central area;
A vibrator seated in the groove of the head case; And,
And an insulating film disposed between the vibrator and the head case. According to claim 1,
The thickness of the vibrator is a skin care device, characterized in that thicker than the thickness of the head case. The method of claim 2,
The thickness ratio of the said head case and the said vibrator is a skin care device, characterized in that 1: 2 to 1:20. According to claim 1,
And the diameter of the vibrator is smaller than the diameter of the groove bottom surface of the head case. According to claim 1,
The vibrator is in contact with the head case, the skin care device, characterized in that. According to claim 1,
The thickness of the insulating film is thinner than the thickness of the head case skin care device. According to claim 1,
The diameter of the groove lower portion of the head case is smaller than the diameter of the groove upper portion of the head case skin care device. According to claim 1,
The groove of the head case,
A bottom surface in contact with the insulating film,
A side extending in an upward direction from the bottom surface,
And an angle between the groove bottom surface and the groove side surface is an obtuse angle. The method of claim 8,
The thickness of the groove bottom surface and the thickness of the groove side surface are different from each other. The method of claim 8,
The thickness of the bottom surface of the groove, the skin care device, characterized in that determined according to the thickness of the vibrator. According to claim 1,
A power supply unit supplying power to the head case and the vibrator under the control of the controller;
A first wiring electrically connected between the head case and the power supply unit to apply an iontophoresis voltage;
And a second and third wire electrically connected between the vibrator and the power supply unit to apply an ultrasonic voltage. The method of claim 11, wherein
The controller controls the power supply unit to apply the iontophoresis voltage to the head case of the head unit when an iontophoresis driving mode signal is input,
And the ultrasonic driving mode signal is input, controlling the power supply unit to apply the ultrasonic voltage to the vibrator of the head unit. According to claim 1,
The skin care device further comprises a sensing unit for sensing the skin state is disposed on the back of the body portion in contact. The method of claim 13,
The control unit may include a skin condition measuring unit measuring the skin condition based on the signal sensed by the sensing unit. The method of claim 14,
The skin condition measuring unit,
A signal applying unit which processes the applied voltage and applies the signal to the sensing unit; And,
Skin care device comprising a signal measuring unit for measuring the skin condition based on the signal sensed from the sensing unit. The method of claim 15,
The signal applying unit,
A first digital-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 the amplified analog signal to the sensing unit. The method of claim 15,
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 to remove noise of the signal amplified from the second amplifier; And,
And a second analog-to-digital converter configured to convert the analog signal output from the filter unit into a digital signal. The method of claim 15,
The skin condition measuring unit,
A power supply unit applying a voltage to the signal applying unit;
A sensing unit configured to sense the skin condition when a voltage is input from the signal applying unit;
A display unit which displays the skin condition result measured by the signal measuring unit; And,
And a skin measurement control unit controlling the power supply unit, the signal applying unit, the sensing unit, the signal measuring unit, and the display unit. The method of claim 18,
According to a control signal of the skin measurement controller, a first setting time for preparing skin measurement, a second setting time for measuring skin according to skin contact, and a third setting time for ending skin measurement according to non-skin contact are measured. Skin care device further comprising a timer. The method of claim 18,
The skin measurement controller, when a skin measurement mode signal is input, measures a reference value according to non-skin contact from the sensing unit, and determines whether the sensing unit contacts the skin based on the reference value.

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