CN213122664U - Skin care leading-in circuit and leading-in device thereof - Google Patents

Abstract

The utility model provides a skin care leading-in circuit, which comprises an MCU, a radio frequency signal generating sub-circuit, a power amplifying sub-circuit, a radio frequency output part and a power supply; the output end of the MCU is electrically connected with the input end of the radio-frequency signal generating sub-circuit, the output end of the radio-frequency signal generating sub-circuit is electrically connected with the input end of the power amplifying sub-circuit, and the output end of the power amplifying sub-circuit is electrically connected with the radio-frequency output part; the MCU, the radio frequency signal generating sub-circuit and the power amplifying sub-circuit are respectively electrically connected with a power supply; the radio frequency signal generating sub-circuit generates a radio frequency signal, and the power amplifying sub-circuit amplifies the radio frequency signal and outputs the radio frequency signal to the radio frequency output part; the radio frequency output part stimulates the facial skin coated with the skin care product in advance, and the time for introducing the skin care product into the skin is shortened.

Description

Skin care leading-in circuit and leading-in device thereof

Technical Field

The utility model relates to a facial physiotherapy equipment technical field especially relates to a skin care leading-in circuit and gatherer thereof.

Background

The radio frequency has good application in the aspect of facial physiotherapy, because the radio frequency stimulates the subcutaneous tissue of a human body through an electric signal of the radio frequency, the subcutaneous tissue is heated by utilizing the impedance of the human body, the movement of water molecules in the tissue is accelerated, the repairing and regenerating functions of the skin are started, collagen is stimulated to repair and regenerate, color spots and acne are eliminated, the skin is pulled and tightened, and the function of facial care is realized.

After people who love beauty use skin care products, such as toner, cream, emulsion, moisturizing spray and other products, the skin care products are required to be gradually massaged until the skin care products can permeate into the skin, and then the effects of nourishing and caring can be achieved. However, such manual introduction is not satisfactory in absorption, resulting in low absorption efficiency and long skin care time.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a skin care import circuit and import device that can replace manual import skin care products, shorten skin care time and portable.

The technical scheme of the utility model is realized like this:

on one hand, the utility model provides a skin care leading-in circuit, which comprises an MCU, a radio frequency signal generating sub-circuit (1), a power amplifying sub-circuit (2), a radio frequency output part (3) and a power supply (4); the output end of the MCU is electrically connected with the input end of the radio frequency signal generating sub-circuit (1), the output end of the radio frequency signal generating sub-circuit (1) is electrically connected with the input end of the power amplifying sub-circuit (2), and the output end of the power amplifying sub-circuit (2) is electrically connected with the radio frequency output part (3); the MCU, the radio frequency signal generating sub-circuit (1) and the power amplifying sub-circuit (2) are respectively electrically connected with a power supply (4); the radio frequency signal generating sub-circuit (1) generates a radio frequency signal, and the power amplifying sub-circuit (2) amplifies the radio frequency signal and outputs the radio frequency signal to the radio frequency output part (3); the radio frequency output part (3) stimulates the facial skin coated with the skin care product in advance, and shortens the time for introducing the skin care product into the skin.

On the basis of the above technical solution, preferably, the MCU is an STM32F103C8T6 chip of an ideological semiconductor.

Further preferably, the radio frequency signal generating sub-circuit (1) comprises a radio frequency generator U5, wherein a pin 4, a pin 9, a pin 11, a pin 14, a pin 15 and a pin 18 of the radio frequency generator U5 are electrically connected with a +3.3V voltage and one end of a decoupling capacitor respectively, and the other end of the decoupling capacitor is grounded; pin 1, pin 7, pin 2, pin 20, pin 3 and pin 6 of the rf generator U5 are electrically connected with pin 20, pin 21, pin 22, pin 23, pin 41 and pin 42 of the MCU in a one-to-one correspondence; a pin 13 of the radio frequency generator U5 is grounded after being connected with a capacitor C9 in series, and a pin 17 of the radio frequency generator U5 is grounded after being connected with a resistor R6 in series; the pin 12 of the rf generator U5 is electrically connected to the input of the power amplifier sub-circuit (2).

Still further preferably, the power amplification sub-circuit (2) includes a MOS transistor Q1 and a bridge BG2, the pin 12 of the radio frequency generator U5 is electrically connected to the gate of the MOS transistor Q1 through a resistor R7, the source of the MOS transistor Q1 is grounded after being connected in parallel to the third end of the bridge BG2, the drain of the MOS transistor Q1 is connected in parallel to the +12V voltage and the first end of the bridge BG2, a resistor R9 is connected in parallel between the drain and the gate of the MOS transistor Q1, and a resistor R8 is connected in parallel between the source and the gate of the MOS transistor Q1; the second end and the fourth end of the bridge BG2 are respectively and electrically connected with the radio frequency output part (3).

Still preferably, the radio frequency output part (3) includes a positive electrode P and a negative electrode N, and the positive electrode P and the negative electrode N are respectively and electrically connected to the second end and the fourth end of the bridge BG2 in a one-to-one correspondence manner.

More preferably, the LED lamp further comprises an LED irradiation sub-circuit (5), wherein the LED irradiation sub-circuit (5) comprises an MOS tube driving chip U6, an MOS tube Q2, an MOS tube Q3 and a plurality of LEDs, a pin 2 and a pin 3 of the MOS tube driving chip U6 are electrically connected with a pin 62 of the MCU in parallel, and a pin 8 of the MOS tube driving chip U6 is electrically connected with a +5V voltage; the pin 7 and the pin 6 of the MOS tube driving chip U6 are electrically connected with the grid of the MOS tube Q2 and the grid of the MOS tube Q3 in a one-to-one correspondence manner, and the source of the MOS tube Q2 is grounded after being connected in parallel with the source of the MOS tube Q3; the drain of the MOS transistor Q2 is electrically connected to the anode of the diode D2, and the drain of the MOS transistor Q3 is electrically connected to the anode P of the diode D3; the negative electrodes N of the diode D2 and the diode D3 are connected in parallel and then are respectively connected in parallel with one ends of the resistor RP1 and the resistor R14, the other end of the resistor RP1 is electrically connected with +12V voltage, and the other end of the resistor R14 is grounded; the LEDs are connected in series in sequence and then are respectively connected in parallel to the anodes of the diodes D2 and D3.

Further preferably, the LEDs connected in parallel to the anode of the diode D2 emit light of different wavelengths from the LEDs connected in parallel to the anode of the diode D3.

More preferably, the power supply (4) includes a transformer T1, a bridge BG1, a voltage stabilization chip U1, a charging chip U2, a battery BAT and a voltage reduction chip U3, a primary side of the transformer T1 is connected to a 220VAC mains supply, a secondary side of the transformer T1 is electrically connected in parallel to a first end and a third end of the bridge BG1, a second end of the bridge BG1 is electrically connected to a pin 1 of the voltage stabilization chip U1 and one end of a capacitor C1, and the other end of the capacitor C1 is grounded; a pin 2 of the voltage stabilizing chip U1 is electrically connected with a pin 4 of the charging chip U2 after being connected with an inductor L1 in series; pin 5 of the charging chip U2 is connected in parallel with the input end of the voltage reduction chip U3 and the anode of the battery BAT; the charging chip U2 charges for the battery BAT, and the battery BAT provides +5V voltage input for step-down chip U3, and step-down chip U3's output provides operating voltage for MCU.

On the other hand, the utility model also provides a skin leading-in device, which comprises a handheld unit (6) and a leading-in unit (7), wherein the handheld unit (6) is detachably connected with the leading-in unit (7); the power supply (4) is arranged in the handheld unit (6), and the MCU, the radio frequency signal generating sub-circuit (1), the power amplifying sub-circuit (2) and the LED irradiation sub-circuit (5) are arranged in the lead-in unit (7); the radio frequency output part (3) is embedded at one end of the leading-in unit (7) close to the face skin and protrudes outwards, the negative pole N of the radio frequency output part is arranged at the center of the end face of the leading-in unit (7), the positive pole P is arranged around the negative pole, and the light-emitting part of the LED illuminating sub-circuit (5) is arranged in an annular area between the positive pole P and the negative pole N.

Preferably, a truncated cone-shaped boss (8) is arranged on the handheld unit (6), the boss (8) is fixedly arranged at one end, close to the lead-in unit (7), of the handheld unit (6) and extends outwards, a plurality of sockets (81) and pins (71) are arranged on the boss (8) and the lead-in unit (7) in a one-to-one correspondence mode, the pins (71) are detachably connected with the sockets (81), the pins (71) are respectively and electrically connected with the MCU, the radio frequency signal generating sub-circuit (1), the power amplifying sub-circuit (2) and the input end of the power supply (4) of the LED irradiation sub-circuit (5), and the sockets (81) are electrically connected with the power supply (4); the diameter of the boss (8) is smaller than that of the handheld unit (6).

The utility model provides a pair of skin care import circuit and gatherer thereof has following beneficial effect for prior art:

(1) the utility model has the advantages that the power supply, the radio frequency signal generating sub-circuit, the power amplifying sub-circuit and the radio frequency output part are independently arranged, so that the power supply, the radio frequency signal generating sub-circuit, the power amplifying sub-circuit and the radio frequency output part can generate weak current on the face of a human body, stimulate the skin to generate more ATP, promote the generation of skin collagen, contribute to the absorption of skin care products, and improve the skin care effect and the care time;

(2) the radio frequency signal generating sub-circuit generates a radio frequency signal and outputs the radio frequency signal to the power amplifying sub-circuit, the power of the road amplifying sub-circuit is amplified and then conditioned into a pulsating level signal, and the pulsating level signal is applied to the surface of the skin of a human body through the radio frequency output part to realize the level stimulation of the radio frequency;

(3) the LED irradiation sub-circuit can assist physical therapy, emit light with different wavelengths to irradiate the face, promote the absorption of skin care products and further improve the skin care effect; the light with different wavelengths such as red light or blue light can be emitted according to the requirement;

(4) the skin leading-in device adopting the circuit has the advantages that all functions are integrated into the handheld unit and the leading-in unit, a plurality of handheld units can be adopted for standby, and the skin leading-in device is convenient to carry and use;

(5) the handheld unit is provided with a boss, and an annular groove is formed between the handheld unit and the leading-in unit, so that a user can hold the handheld unit conveniently and can perform insulation protection on the contact pin and the socket.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a circuit block diagram of a skin care importing circuit and importing device thereof according to the present invention;

fig. 2 is a wiring diagram of the power supply of the skin care lead-in circuit and the lead-in device of the present invention;

fig. 3 is a wiring diagram of the MCU, the rf signal generating sub-circuit, the power amplifying sub-circuit and the rf output portion of the skin care importing circuit and the importing device thereof of the present invention;

fig. 4 is a wiring diagram of the LED irradiation sub-circuit of the skin care lead-in circuit and the lead-in device of the present invention;

fig. 5 is a perspective view of a skin care delivery device of the present invention;

FIG. 6 is a bottom view of FIG. 5;

fig. 7 is a perspective view of a handheld unit of a skin care delivery device of the present invention;

fig. 8 is a perspective view of the leading-in unit of the skin care leading-in device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1, the technical solution of the present invention is realized as follows: on one hand, the utility model provides a skin care leading-in circuit, which comprises a MCU, a radio frequency signal generating sub-circuit 1, a power amplifying sub-circuit 2, a radio frequency output part 3, a power supply 4 and a LED irradiation sub-circuit 5; the output end of the MCU is electrically connected with the input end of the radio frequency signal generating sub-circuit 1, the output end of the radio frequency signal generating sub-circuit 1 is electrically connected with the input end of the power amplifying sub-circuit 2, and the output end of the power amplifying sub-circuit 2 is electrically connected with the radio frequency output part 3; the MCU, the radio frequency signal generating sub-circuit 1 and the power amplifying sub-circuit 2 are respectively electrically connected with a power supply 4; wherein, the radio frequency signal generating sub-circuit 1 generates a radio frequency signal, and the power amplifying sub-circuit 2 amplifies the radio frequency signal and outputs the radio frequency signal to the radio frequency output part 3; the radio frequency output part 3 stimulates the facial skin coated with the skin care product in advance, and shortens the time for introducing the skin care product into the skin: the radio frequency output part 3 can generate weak current on the face of a human body, stimulate the skin to generate more ATP, promote the generation of skin collagen, contribute to the absorption of skin care products, and improve the skin care effect and the care time.

As shown in fig. 3, the MCU of the present invention, i.e., U4 in the figure, may be an STM32F103C8T6 chip of an intentional semiconductor.

The rf signal generating sub-circuit 1 specifically includes an rf generator U5, and the rf generator U5 is a CC1101 rf signal generator. It can be seen from the figure that pin 4, pin 9, pin 11, pin 14, pin 15 and pin 18 of the rf generator U5 are electrically connected to +3.3V voltage and one end of a decoupling capacitor, respectively, and the other end of the decoupling capacitor is grounded; pin 1, pin 7, pin 2, pin 20, pin 3 and pin 6 of the rf generator U5 are electrically connected with pin 20, pin 21, pin 22, pin 23, pin 41 and pin 42 of the MCU in a one-to-one correspondence; a pin 13 of the radio frequency generator U5 is grounded after being connected with a capacitor C9 in series, and a pin 17 of the radio frequency generator U5 is grounded after being connected with a resistor R6 in series; the pin 12 of the rf generator U5 is electrically connected to the input of the power amplification sub-circuit 2. After the radio frequency signal is generated, the radio frequency signal is output to the power amplification sub-circuit 2 through the pin 12 to further amplify the output power. The input end of the radio frequency generator U5 is electrically connected with the MCU through the SPI port, so that interruption and enabling are facilitated, a control signal is output according to the setting of a hand book, and a radio frequency signal with required frequency is sent.

As also shown in fig. 3, the power amplifier sub-circuit 2 includes a MOS transistor Q1 and a bridge BG2, a pin 12 of the rf generator U5 is electrically connected to a gate of the MOS transistor Q1 through a resistor R7, a source of the MOS transistor Q1 is connected in parallel to a third end of the bridge BG2 and then grounded, a drain of the MOS transistor Q1 is connected in parallel to a +12V voltage and a first end of the bridge BG2, a resistor R9 is connected in parallel between the drain and the gate of the MOS transistor Q1, and a resistor R8 is connected in parallel between the source and the gate of the MOS transistor Q1; the second end and the fourth end of the bridge BG2 are electrically connected to the rf output unit 3, respectively. The power amplification sub-circuit 2 amplifies the power of the radio frequency signal by the MOS transistor Q1, and then full-wave shapes the amplified power through the bridge BG2 to form a voltage signal with a pulsating change, and outputs the voltage signal to the radio frequency output unit 3. The radio frequency output part 3 comprises a positive electrode P and a negative electrode N, and the positive electrode P and the negative electrode N are respectively electrically connected with the second end and the fourth end of the bridge BG2 in a one-to-one correspondence manner. The illustrated positive and negative electrodes P and N may be used in the same position.

As shown in fig. 4, in order to improve the absorption effect of the skin care product, the utility model also adds a light therapy part, i.e. an LED irradiation sub-circuit 5, on the basis of the radio frequency stimulation. The LED irradiation sub-circuit 5 comprises an MOS tube driving chip U6, an MOS tube Q2, an MOS tube Q3 and a plurality of LEDs, wherein a pin 2 and a pin 3 of the MOS tube driving chip U6 are connected in parallel and electrically connected with a pin 62 of the MCU, and a pin 8 of the MOS tube driving chip U6 is electrically connected with +5V voltage; the pin 7 and the pin 6 of the MOS tube driving chip U6 are electrically connected with the grid of the MOS tube Q2 and the grid of the MOS tube Q3 in a one-to-one correspondence manner, and the source of the MOS tube Q2 is grounded after being connected in parallel with the source of the MOS tube Q3; the drain of the MOS transistor Q2 is electrically connected to the anode of the diode D2, and the drain of the MOS transistor Q3 is electrically connected to the anode P of the diode D3; the negative electrodes N of the diode D2 and the diode D3 are connected in parallel and then are respectively connected in parallel with one ends of the resistor RP1 and the resistor R14, the other end of the resistor RP1 is electrically connected with +12V voltage, and the other end of the resistor R14 is grounded; the LEDs are connected in series in sequence and then are respectively connected in parallel to the anodes of the diodes D2 and D3.

As shown in fig. 4, the LEDs connected in parallel to the anode of the diode D2 and the LEDs connected in parallel to the anode of the diode D3 emit light with different wavelengths, and the illustrated LEDs include red LEDs and blue LEDs, which can respectively emit red light with a wavelength of 615nm to 635nm or blue light with a wavelength of 460nm to 480nm, and the red light can penetrate through the skin surface tissues, accelerate the metabolism of the skin, and promote the production of skin collagen; the blue light can regulate the secretion of skin gland grease, improve the skin environment and promote the absorption of skin care products.

As shown in fig. 2, the power supply 4 includes a transformer T1, a bridge BG1, a voltage stabilization chip U1, a charging chip U2, a battery BAT and a voltage reduction chip U3, a primary side of the transformer T1 is connected to a 220VAC mains supply, a secondary side of the transformer T1 is electrically connected in parallel to a first end and a third end of the bridge BG1, a second end of the bridge BG1 is electrically connected to a pin 1 of the voltage stabilization chip U1 and one end of a capacitor C1, and the other end of the capacitor C1 is grounded; a pin 2 of the voltage stabilizing chip U1 is electrically connected with a pin 4 of the charging chip U2 after being connected with an inductor L1 in series; pin 5 of the charging chip U2 is connected in parallel with the input end of the voltage reduction chip U3 and the anode of the battery BAT; the charging chip U2 charges for the battery BAT, and the battery BAT provides +5V voltage input for step-down chip U3, and step-down chip U3's output provides operating voltage for MCU. When in use, the battery BAT is used for supplying power. During charging, battery BAT is charged by 220VAC ac mains.

On the other hand, the utility model also provides a skin leading-in device, which comprises a handheld unit 6 and a leading-in unit 7, wherein the handheld unit 6 is detachably connected with the leading-in unit 7; the power supply 4 is arranged in the handheld unit 6, and the MCU, the radio frequency signal generating sub-circuit 1, the power amplifying sub-circuit 2 and the LED irradiation sub-circuit 5 are arranged in the lead-in unit 7; the radio frequency output part 3 is embedded at one end of the leading-in unit 7 close to the face skin and protrudes outwards, a negative pole N of the radio frequency output part is arranged at the center of the end face of the leading-in unit 7, a positive pole P is arranged around the negative pole, and a light outlet part of the LED illumination sub-circuit 5 is arranged in an annular area between the positive pole P and the negative pole N. The skin introducing device is formed by combining two detachable parts, and combines the radio frequency output part 3 and the LED light emitting part of the LED irradiation sub-circuit 5, so that the equipment is further miniaturized and portable. When needing to charge, only need to hold handheld unit 6 charge can, if adopt one to use one to prepare the mode configuration handheld unit 6, can use of charging in turn, it is more convenient to go out to use.

As a further improvement of the present invention, in order to hold the handheld unit 6, in the handheld unit, a circular truncated cone shaped boss 8 is provided on the handheld unit 6, the boss 8 is fixedly disposed at one end of the handheld unit 6 close to the lead-in unit 7 and extends outward, the boss 8 and the lead-in unit 7 are provided with a plurality of sockets 81 and pins 71 in one-to-one correspondence, the pins 71 are detachably connected to the sockets 81, the pins 71 are respectively electrically connected to the MCU, the rf signal generating sub-circuit 1, the power amplifying sub-circuit 2 and the power source 4 input end of the LED irradiation sub-circuit 5, and the sockets 81 are electrically connected to the power source 4; as shown in fig. 5-8, the diameter of the boss 8 is smaller than that of the handheld unit 6, so as to form an annular groove, which is convenient for a user to hold, and at the same time, improves the protection capability of the socket 81 and the insertion pin 71, and can play a certain role in dust prevention and water splashing prevention. The socket 81 and the socket 71 are correspondingly provided with anti-falling limiting clamping grooves and other structures, so that the handheld unit 6 and the guide-in unit 7 are connected more stably.

The utility model discloses during the use, clean face earlier, paint proper amount skin care products in face afterwards, utilize this leading-in device massage face, promote skin care products's absorption, replace manual patting and massage.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A skin care lead-in circuit, comprising: the device comprises an MCU, a radio frequency signal generating sub-circuit (1), a power amplifying sub-circuit (2), a radio frequency output part (3) and a power supply (4); the output end of the MCU is electrically connected with the input end of the radio frequency signal generating sub-circuit (1), the output end of the radio frequency signal generating sub-circuit (1) is electrically connected with the input end of the power amplifying sub-circuit (2), and the output end of the power amplifying sub-circuit (2) is electrically connected with the radio frequency output part (3); the MCU, the radio frequency signal generating sub-circuit (1) and the power amplifying sub-circuit (2) are respectively electrically connected with a power supply (4); the radio frequency signal generating sub-circuit (1) generates a radio frequency signal, and the power amplifying sub-circuit (2) amplifies the radio frequency signal and outputs the radio frequency signal to the radio frequency output part (3); the radio frequency output part (3) stimulates the facial skin coated with the skin care product in advance, and shortens the time for introducing the skin care product into the skin.

2. A skin care lead-in circuit as defined in claim 1, wherein: the MCU is an STM32F103C8T6 chip of an ideological semiconductor.

3. A skin care lead-in circuit as defined in claim 2, wherein: the radio frequency signal generating sub-circuit (1) comprises a radio frequency generator U5, wherein a pin 4, a pin 9, a pin 11, a pin 14, a pin 15 and a pin 18 of the radio frequency generator U5 are respectively electrically connected with +3.3V voltage and one end of a decoupling capacitor, and the other end of the decoupling capacitor is grounded; pin 1, pin 7, pin 2, pin 20, pin 3 and pin 6 of the rf generator U5 are electrically connected with pin 20, pin 21, pin 22, pin 23, pin 41 and pin 42 of the MCU in a one-to-one correspondence; a pin 13 of the radio frequency generator U5 is grounded after being connected with a capacitor C9 in series, and a pin 17 of the radio frequency generator U5 is grounded after being connected with a resistor R6 in series; the pin 12 of the rf generator U5 is electrically connected to the input of the power amplifier sub-circuit (2).

4. A skin care lead-in circuit as defined in claim 3, wherein: the power amplification sub-circuit (2) comprises a MOS tube Q1 and an electric bridge BG2, a pin 12 of a radio frequency generator U5 is electrically connected with a grid electrode of the MOS tube Q1 through a resistor R7, a source electrode of the MOS tube Q1 is connected with a third end of the electric bridge BG2 in parallel and then grounded, a drain electrode of the MOS tube Q1 is connected with a +12V voltage and a first end of the electric bridge BG2 in parallel, a resistor R9 is connected between the drain electrode and a grid electrode of the MOS tube Q1 in parallel, and a resistor R8 is connected between the source electrode and the grid electrode of the MOS tube Q1 in parallel; the second end and the fourth end of the bridge BG2 are respectively and electrically connected with the radio frequency output part (3).

5. The skin care lead-in circuit of claim 4, wherein: the radio frequency output part (3) comprises a positive electrode P and a negative electrode N, and the positive electrode P and the negative electrode N are respectively electrically connected with the second end and the fourth end of the bridge BG2 in a one-to-one correspondence manner.

6. The skin care lead-in circuit of claim 4, wherein: the LED lamp further comprises an LED irradiation sub-circuit (5), wherein the LED irradiation sub-circuit (5) comprises an MOS tube driving chip U6, an MOS tube Q2, an MOS tube Q3 and a plurality of LEDs, a pin 2 and a pin 3 of the MOS tube driving chip U6 are connected in parallel and electrically connected with a pin 62 of the MCU, and a pin 8 of the MOS tube driving chip U6 is electrically connected with +5V voltage; the pin 7 and the pin 6 of the MOS tube driving chip U6 are electrically connected with the grid of the MOS tube Q2 and the grid of the MOS tube Q3 in a one-to-one correspondence manner, and the source of the MOS tube Q2 is grounded after being connected in parallel with the source of the MOS tube Q3; the drain of the MOS transistor Q2 is electrically connected to the anode of the diode D2, and the drain of the MOS transistor Q3 is electrically connected to the anode P of the diode D3; the negative electrodes N of the diode D2 and the diode D3 are connected in parallel and then are respectively connected in parallel with one ends of the resistor RP1 and the resistor R14, the other end of the resistor RP1 is electrically connected with +12V voltage, and the other end of the resistor R14 is grounded; the LEDs are connected in series in sequence and then are respectively connected in parallel to the anodes of the diodes D2 and D3.

7. A skin care lead-in circuit as defined in claim 6, wherein: the LED connected with the anode of the diode D2 in parallel and the LED connected with the anode of the diode D3 in parallel emit light with different wavelengths.

8. A skin care lead-in circuit as defined in claim 6, wherein: the power supply (4) comprises a transformer T1, an electric bridge BG1, a voltage stabilizing chip U1, a charging chip U2, a storage battery BAT and a voltage reducing chip U3, wherein the primary side of the transformer T1 is connected with 220VAC alternating current mains supply, the secondary side of the transformer T1 is respectively and electrically connected with the first end and the third end of the electric bridge BG1 in parallel, the second end of the electric bridge BG1 is electrically connected with a pin 1 of the voltage stabilizing chip U1 and one end of a capacitor C1, and the other end of the capacitor C1 is grounded; a pin 2 of the voltage stabilizing chip U1 is electrically connected with a pin 4 of the charging chip U2 after being connected with an inductor L1 in series; pin 5 of the charging chip U2 is connected in parallel with the input end of the voltage reduction chip U3 and the anode of the battery BAT; the charging chip U2 charges for the battery BAT, and the battery BAT provides +5V voltage input for step-down chip U3, and step-down chip U3's output provides operating voltage for MCU.

9. A skin introduction device characterized by: the device comprises a handheld unit (6) and an introduction unit (7), wherein the handheld unit (6) is detachably connected with the introduction unit (7); the power supply (4) is arranged in the handheld unit (6), and the MCU, the radio frequency signal generating sub-circuit (1), the power amplifying sub-circuit (2) and the LED irradiation sub-circuit (5) are arranged in the lead-in unit (7); the radio frequency output part (3) is embedded at one end of the leading-in unit (7) close to the face skin and protrudes outwards, the negative pole N of the radio frequency output part is arranged at the center of the end face of the leading-in unit (7), the positive pole P is arranged around the negative pole, and the light-emitting part of the LED illuminating sub-circuit (5) is arranged in an annular area between the positive pole P and the negative pole N.

10. A skin introduction device according to claim 9, wherein: the handheld unit (6) is provided with a truncated cone-shaped boss (8), the boss (8) is fixedly arranged at one end, close to the leading-in unit (7), of the handheld unit (6) and extends outwards, the boss (8) and the leading-in unit (7) are provided with a plurality of sockets (81) and contact pins (71) in a one-to-one correspondence mode, the contact pins (71) are detachably connected with the sockets (81), the contact pins (71) are respectively and electrically connected with the MCU, the radio frequency signal generator sub-circuit (1), the power amplifier sub-circuit (2) and the input end of the power supply (4) of the LED irradiation sub-circuit (5), and the sockets (81) are electrically connected with the power supply (4); the diameter of the boss (8) is smaller than that of the handheld unit (6).

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