CN220967395U - Beauty instrument - Google Patents

Abstract

The application discloses a beauty instrument. The beauty instrument comprises a face mask and a control box. The face cover is provided with N LED lamp groups, any LED lamp group comprises M LED lamp columns, and each LED lamp column comprises K LED lamps which are connected in series. The control box is provided with a control circuit for providing power supply voltage for the LED lamps, and the control circuit comprises a controller, a boosting branch and N lamp group control branches. The boost branch is connected with the input power supply and the controller, and the boost branch responds to an enabling signal output by the controller to boost the voltage of the input power supply to a first voltage. The N lamp group control branches are connected with the N LED lamp groups in a one-to-one correspondence mode, the lamp group control branches are further connected with the boosting branches and the controller respectively, and the lamp group control branches are alternately turned on and off in response to pulse width modulation signals output by the controller so as to supply power to the LED lamp groups based on the first voltage. Through the mode, nursing to skin can be realized through the face guard, can avoid long-time handheld beauty instrument and lead to the tired of hand to improve user experience.

Description

Beauty instrument

Technical Field

The application relates to the technical field of medical beauty equipment, in particular to a beauty instrument.

Background

The beauty instrument is an instrument for regulating and improving the skin state, and has the action principle that the skin is stimulated and acted differently by micro-frequency current, radio frequency, ultrasonic wave, strong light and other technologies, so that the effects of helping human body to depilation, tenderize skin, remove spots and the like are achieved, and the beauty function is realized.

Currently, beauty treatment equipment is typically a hand-held structure. In the use process of the beauty instrument with the handheld structure, a user is required to grasp the beauty instrument and operate the beauty instrument to move so as to realize the skin care process. However, long-term operation can cause tiredness of the hands, and the user experience is poor.

Disclosure of utility model

The application aims to provide a beauty instrument, which can realize skin care through a mask and can avoid fatigue of hands caused by holding the beauty instrument for a long time, thereby improving user experience.

To achieve the above object, in a first aspect, the present application provides a cosmetic apparatus comprising:

The mask is provided with N LED lamp groups, any LED lamp group comprises M LED lamp columns, each LED lamp column comprises K LED lamps which are connected in series, wherein light emitted by each LED lamp can act on skin to care the skin, and M, N, K is an integer which is more than or equal to 1;

The control box is provided with a control circuit for providing power supply voltage for the LED lamps, and the control circuit comprises a controller, a boosting branch and N lamp group control branches;

The boost branch is electrically connected with an input power supply and the controller respectively, and is configured to operate in response to an enabling signal output by the controller so as to boost the voltage of the input power supply to a first voltage;

The N lamp group control branches are electrically connected with the N LED lamp groups in a one-to-one correspondence manner, and are also respectively electrically connected with the boosting branches and the controller, and the lamp group control branches are configured to be alternately turned on and off in response to pulse width modulation signals output by the controller, and establish or disconnect the electrical connection between the boosting branches and the LED lamp groups so as to supply power to the LED lamp groups based on the first voltage.

In an optional manner, the boost branch circuit includes a boost chip, an inductor and a first PMOS tube;

The first end of the inductor and the power supply pin of the boost chip are electrically connected with the input power supply, the switch pin of the boost chip is electrically connected with the second end of the inductor, the driving pin of the boost chip is electrically connected with the grid electrode of the first PMOS tube, the output pin of the boost chip is electrically connected with the source electrode of the first PMOS tube, and the drain electrode of the first PMOS tube is electrically connected with the lamp set control branch circuit.

In an alternative manner, the light group control leg includes a first switching sub-leg and a second switching sub-leg;

The first end of the first switch sub-branch is electrically connected with the controller, the second end of the first switch sub-branch is grounded, the third end of the first switch sub-branch is electrically connected with the first end of the second switch sub-branch, the second end of the second switch sub-branch is electrically connected with the boost branch, and the third end of the second switch sub-branch is electrically connected with the LED lamp group;

The first switching sub-branch is configured to alternately turn on and off in response to the pulse width modulation signal to establish or break an electrical connection between the first end of the second switching sub-branch and ground;

The second switch sub-branch is configured to conduct when a first end of the second switch sub-branch is grounded and establish an electrical connection between the boost branch and the LED light bank to power the LED light bank based on the first voltage, and is configured to disconnect when a connection between the first end of the first switch sub-branch and ground is broken and to disconnect the electrical connection between the boost branch and the LED light bank to stop powering the LED light bank.

In an alternative manner, the first switching sub-branch includes an NPN transistor;

The base electrode of the NPN type triode is electrically connected with the controller, the emitting electrode of the NPN type triode is grounded, and the collecting electrode of the NPN type triode is electrically connected with the second switch sub-branch circuit.

In an alternative manner, the first switch sub-branch further includes a first resistor and a second resistor;

The first end of the first resistor is electrically connected with the controller, the second end of the first resistor is electrically connected with the base electrode of the NPN triode and the first end of the second resistor respectively, and the second end of the second resistor is grounded.

In an optional manner, the second switch sub-branch includes a second PMOS tube;

The grid electrode of the second PMOS tube is electrically connected with the third end of the first switch subcircuit, the source electrode of the second PMOS tube is electrically connected with the boost subcircuit, and the drain electrode of the second PMOS tube is electrically connected with the LED lamp group.

In an alternative manner, the second switching sub-branch further includes a third resistor, a fourth resistor, and a fifth resistor;

The first end of the third resistor is electrically connected with the third end of the first switch subcircuit, the second end of the third resistor is electrically connected with the first end of the fourth resistor and the grid electrode of the second PMOS tube respectively, the second end of the fourth resistor is electrically connected with the first end of the fifth resistor and the source electrode of the second PMOS tube respectively, and the second end of the fifth resistor is electrically connected with the boost subcircuit.

In an optional manner, n×m current limiting resistors are further disposed on the mask;

each current limiting resistor is connected in series with one of the LED lamp strings.

In an alternative way, a first interface is further arranged on the mask, and a second interface is further arranged on the control box;

The first interface and the second interface may be electrically connected through a data line, and the second interface is electrically connected with the controller.

In an optional manner, a fifth resistor is further arranged on the mask, and the fifth resistor is electrically connected with the first pin in the first interface;

the control circuit further comprises a sixth resistor and a seventh resistor, wherein the first end of the sixth resistor is electrically connected with the second pin in the second interface, the second end of the sixth resistor is electrically connected with the controller and the first end of the seventh resistor, and the second end of the seventh resistor is electrically connected with a second voltage;

When the first interface and the second interface can be electrically connected through a data line, the first pin and the second pin are electrically connected.

The beneficial effects of the application are as follows: the beauty treatment instrument provided by the application comprises a face mask and a control box. The face mask is provided with N LED lamp groups, any LED lamp group comprises M LED lamp columns, and each LED lamp column comprises K LED lamps which are connected in series. The control box is provided with a control circuit for providing a supply voltage for the LED lamp. The control circuit comprises a controller, a boosting branch circuit and N lamp group control branch circuits. The boost branch is electrically connected with the input power supply and the controller respectively, and is configured to operate in response to an enabling signal output by the controller so as to boost the voltage of the input power supply to a first voltage. The N lamp group control branches are electrically connected with the N LED lamp groups in a one-to-one correspondence mode, and the N lamp group control branches are also electrically connected with the boosting branch and the controller respectively. The lamp set control branch is configured to alternately turn on and off in response to a pulse width modulation signal output by the controller and to establish or disconnect an electrical connection between the boost branch and the LED lamp set to power the LED lamp set based on the first voltage. Then, when the user uses the beauty instrument, the user only needs to cover the face mask on the face, and the LED lamp emits light by operating the control box, and the light emitted by the LED lamp acts on the skin of the face to care the skin of the face. To sum up, realize nursing skin through the face guard, can avoid holding the beauty instrument for a long time and lead to the tired of hand to improve user experience.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic structural diagram of a cosmetic apparatus according to a first embodiment of the present application;

fig. 2 is a schematic circuit diagram of an LED lamp set according to a first embodiment of the present application;

fig. 3 is a schematic structural diagram of a control circuit according to a first embodiment of the present application;

Fig. 4 is a schematic circuit structure diagram of a boost branch circuit according to a first embodiment of the present application;

fig. 5 is a schematic structural diagram of a control branch of a light fixture according to a first embodiment of the present application;

Fig. 6 is a schematic circuit diagram of a control branch circuit of a lamp set according to a first embodiment of the present application;

fig. 7 is a schematic structural diagram of a part of a circuit in a cosmetic apparatus according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a cosmetic apparatus according to an embodiment of the present application. As shown in fig. 1, the cosmetic apparatus 1 includes a mask 10 and a control box 20.

The mask 10 is provided with N LED lamp groups (not shown), where N LED lamp groups are disposed in each area 11 of the mask 10, and each area 11 may be provided with one or more LED lamps, which is not limited in particular by the embodiment of the present application.

Any one of the N LED lamp groups comprises M LED lamp columns. The LED lamp string comprises K LED lamps connected in series. Wherein M, N, K is an integer not less than 1. Referring to fig. 2 together, fig. 2 schematically illustrates a circuit structure of one LED lamp group of the N LED lamp groups. As shown in fig. 2, the LED lamp set includes 6 LED lamp columns (where k=6) sequentially connected in series, and each LED lamp column includes 6 LED lamps, which are LED lamp LE1, LED lamp LE2, LED lamp LE3, LED lamp LE4, LED lamp LE5 and LED lamp LE6, respectively. When the first voltage V1 is input to the LED lamp group, the LED lamps in the LED lamp group emit light. In turn, the light emitted by the LED lamp may act on the skin to care for the skin.

In some embodiments, the mask 10 is further provided with n×m current limiting resistors. Each current limiting resistor is connected with one LED lamp column in series. Since there are N LED lamp groups, each LED lamp group includes M LED lamp columns, there are n×m LED lamp columns in total, so n×m current limiting resistors can be set. In this embodiment, each LED lamp string is connected in series to limit the current flowing through each LED lamp string, which is beneficial to preventing the LED lamp from being damaged due to excessive current, so as to prolong the service life of the LED lamp. For example, as shown in fig. 2, the current limiting resistor RE1 is connected in series with the first lamp string, that is, the current limiting resistor RE1 is connected in series with the LED lamp LE1, the LED lamp LE2, the LED lamp LE3, the LED lamp LE4, the LED lamp LE5, and the LED lamp LE6 in order.

It will be appreciated that in this embodiment, 6 LED lamp columns are set for each LED lamp group, and each LED lamp column includes 6 LED lamps as an example, and in other embodiments, other numbers of LED lamp columns and LED lamps may be set according to the requirements, which is not particularly limited in the embodiments of the present application.

The controller 20 is provided with a control circuit for providing a supply voltage for the LED lamp. Referring to fig. 3, fig. 3 is a schematic structural diagram of a control circuit according to an embodiment of the application.

As shown in fig. 3, the control circuit 22 includes a controller 221, a boost branch 222, and N lamp group control branches. The N lamp group control branches comprise a first lamp group control circuit A1, a second lamp group control circuit A2 … and AN N lamp group control circuit AN. The N LED lamp groups comprise a first LED lamp group B1, a second LED lamp group B2 … and an N LED lamp group BN.

The boost branch 222 is electrically connected to the input power VIN and the controller 221, respectively. The N lamp group control branches are electrically connected to the N LED lamp groups in a one-to-one correspondence, and the N lamp group control branches are also electrically connected to the boost branch 222 and the controller 221, respectively. Specifically, the first end of the boost branch 222 is electrically connected to the input power VIN. A second end of the boost branch 222 is electrically connected to the controller 221. The third terminal of the boost branch 222 is electrically connected to the first terminal of the first lamp group control circuit A1 and the first terminal … of the nth lamp group control circuit AN of the second lamp group control circuit A2, respectively. The second end of the first lamp group control circuit A1 and the second end … of the second lamp group control circuit A2 are electrically connected to the controller 221. The third end of the first lamp set control circuit A1 is electrically connected with the first end of the first LED lamp set B1; the third end of the second lamp set control circuit A2 is electrically connected … with the first end of the second LED lamp set B2, and the third end of the N-th lamp set control circuit AN is electrically connected with the first end of the N-th LED lamp set BN.

In this embodiment, the boost branch 222 is configured to operate in response to the enable signal output by the controller 221 to boost the voltage of the input power source VIN to the first voltage V1. The first voltage V1 is input to the first lamp group control circuit A1, the second lamp group control circuit A2 … and the nth lamp group control circuit AN. Any one of the lamp string control branches is configured to turn on and off alternately in response to a pulse width modulation signal output by the controller 221, and to establish or disconnect an electrical connection between the boost branch 222 and the LED lamp string to power the LED lamp string based on the first voltage V1. Wherein a pulse width modulated (Pulse Width Modulation, PWM) signal is a periodic signal in which the width of the pulse (high level duration) is modulated to convey information or control the power output. Specifically, the pulse width modulation signal output by the controller 221 includes a first sub-signal and a second sub-signal … (each sub-signal is also a PWM signal), and is input to the first lamp group control circuit A1 and the second lamp group control circuit A2 …, respectively. The first lamp group control circuit A1 alternately turns on and off when receiving the first sub-signal to establish or disconnect an electrical connection between the boost branch 222 and the first LED lamp group B1 to supply power to the first LED lamp group B1 based on the first voltage V1; the second lamp group control circuit A2 is alternately turned on and off when receiving the second sub-signal to establish or disconnect the electrical connection between the boost branch 222 and the second LED lamp group B2, to supply … the nth lamp group control circuit AN to the second LED lamp group B2 based on the first voltage V1, and to establish or disconnect the electrical connection between the boost branch 222 and the nth LED lamp group BN based on the first voltage V1.

The first lamp group control circuit A1 will be described in detail as an example. When the first sub-signal is at a high level, an electrical connection between the boost branch 222 and the first LED lamp group B1 is established, the first voltage V1 supplying power to the first LED lamp group B1; when the first sub-signal is at a low level, the electrical connection between the boost branch 222 and the first LED lamp group B1 is broken and the first voltage V1 stops supplying power to the first LED lamp group B1. In turn, the duty cycle of the first sub-signal controls the length of time that the first LED lamp B1 is powered up during one PWM period, and thus the power of the first LED lamp B1. In other words, by changing the duty cycle of the first sub-signal, the power of the first LED lamp group B1 can be changed.

To sum up, in practical application, when any LED lamp set needs to be turned on, the controller 221 only needs to output the corresponding sub-signal. Thus, when the user uses the beauty apparatus 1, the face mask 10 can be put on the face, and the light emitted from the LED lamp acts on the skin of the face to care the skin of the face by operating the control box 20 to make the LED lamp emit light. And further, the skin is nursed through the mask 10, so that the long-time holding of the beauty instrument is avoided, the fatigue of hands is avoided, and the user experience is improved. In addition, the power of each LED lamp can be adjusted by adjusting the duty ratio of the pulse width modulation signal output by the controller so as to realize different nursing effects, and the nursing efficiency is also improved. Second, the nursing of the skin through the mask 10 can also increase the nursing area of the skin with respect to the handheld beauty instrument, thereby improving the nursing efficiency. Furthermore, because the mask 10 has a larger area, more LED lamps can be arranged to further improve the nursing efficiency.

Referring to fig. 4, a circuit structure of the boost branch 222 is schematically shown in fig. 4. As shown in fig. 4, the boost branch 222 includes a boost chip U1, an inductor L1, and a first PMOS transistor Q1.

The first end of the inductor L1 and the power supply pin VCC of the boost chip U1 are electrically connected with the input power supply VIN, the switch pin SW of the boost chip U1 is electrically connected with the second end of the inductor L1, the driving pin DISDRV of the boost chip U1 is electrically connected with the gate of the first PMOS transistor Q1, the output pin VOUT of the boost chip U1 is electrically connected with the source of the first PMOS transistor Q1, and the drain of the first PMOS transistor Q1 is electrically connected with the lamp set control branch.

Specifically, the boost chip U1 controls charging and discharging of the inductor L1 through the switch pin SW to boost the voltage of the input power source VIN. Meanwhile, the input power VIN is input to the power pin VCC of the boost chip U1 to supply power to the boost chip U1. The output pin VOUT of the boost chip U1 is configured to output a first voltage V1. The driving pin DISDRV of the boost chip U1 is used to drive the on and off of the first PMOS transistor. When the driving pin DISDRV of the boost chip U1 drives the first PMOS transistor to turn on, the first voltage V1 is output after passing through the source and the drain of the first PMOS transistor.

In one embodiment, boost chip U1 may be a synchronous boost converter chip of SGM 6612.

In one embodiment, any one of the lamp group control branches includes a first switching sub-branch and a second switching sub-branch. The first end of the first switch sub-branch is electrically connected with the controller, the second end of the first switch sub-branch is grounded, the third end of the first switch sub-branch is electrically connected with the first end of the second switch sub-branch, the second end of the second switch sub-branch is electrically connected with the boosting branch, and the third end of the second switch sub-branch is electrically connected with the LED lamp group.

In particular, the first switching sub-branch is configured to alternately turn on and off in response to a pulse width modulated signal to establish or break an electrical connection between the first end of the second switching sub-branch and ground. The second switching sub-branch is configured to conduct when the first end of the second switching sub-branch is grounded and to establish an electrical connection between the boost branch and the LED light bank to power the LED light bank based on the first voltage. The second switch sub-branch is further configured to disconnect when the connection between the first end of the first switch sub-branch and ground is broken, and to disconnect the electrical connection between the boost branch and the LED light bank to stop powering the LED light bank.

The first lamp group control branch A1 is described below as an example.

As shown in fig. 5, the first lamp group control leg A1 includes a first switching sub-leg a11 and a second switching sub-leg a12. The first end of the first switch sub-branch a11 is electrically connected to the controller 221, the second end of the first switch sub-branch a11 is grounded GND, the third end of the first switch sub-branch a11 is electrically connected to the first end of the second switch sub-branch a12, the second end of the second switch sub-branch a12 is electrically connected to the boost branch 222, so as to input the first voltage V1, and the third end of the second switch sub-branch a12 is electrically connected to the first LED lamp group B1.

Specifically, when the first switching sub-branch a11 is configured to be turned on in response to the pulse width modulation signal being at a high level, an electrical connection between the first end of the second switching sub-branch a12 and the ground GND is established. The second switching sub-branch a12 is configured to conduct when the first terminal of the second switching sub-branch a12 is grounded GND, and to establish an electrical connection between the boost branch 222 and the first LED lamp group B1 to power the first LED lamp group B1 based on the first voltage V1.

When the first switching sub-branch a11 is configured to be turned off in response to the pulse width modulation signal being at a low level, the electrical connection between the first end of the second switching sub-branch a12 and the ground GND is disconnected. The second switching sub-branch a12 is configured to be disconnected when the connection between the first end of the second switching sub-branch a12 and the ground GND is disconnected, and to disconnect the electrical connection between the boost branch 222 and the first LED lamp group B1 to stop supplying power to the first LED lamp group B1.

Referring to fig. 6, fig. 6 illustrates a circuit structure of a first switch sub-branch a11 and a second switch sub-branch a 12.

In one embodiment, as shown in fig. 6, the first switching sub-branch a11 includes an NPN transistor Q2.

The base of the NPN transistor Q2 is electrically connected to the controller 221, the emitter of the NPN transistor Q2 is grounded GND, and the collector of the NPN transistor Q2 is electrically connected to the second switching sub-branch a 12.

Specifically, when the controller 221 outputs the first sub-signal to the base of the NPN transistor Q2, the NPN transistor Q2 is turned on, and the first end of the second switching sub-branch a12 is grounded GND through the collector and emitter of the NPN transistor Q2. Conversely, if the controller 221 does not output the first sub-signal, the NPN transistor Q2 is turned off, and the electrical connection between the first end of the second switching sub-branch a12 and the ground GND is disconnected.

In another embodiment, the first switch sub-branch a11 further includes a first resistor R1 and a second resistor R2.

The first end of the first resistor R1 is electrically connected to the controller 221, the second end of the first resistor R1 is electrically connected to the base of the NPN transistor Q2 and the first end of the second resistor R2, respectively, and the second end of the second resistor R2 is grounded GND.

Specifically, the first resistor R1 is a current limiting resistor. The second resistor R2 is a pull-down resistor.

In an embodiment, the second switch sub-branch a12 includes a second PMOS transistor Q3.

The gate of the second PMOS transistor Q3 is electrically connected to the third end of the first switch sub-branch a11, the source of the second PMOS transistor Q3 is electrically connected to the boost branch 222, and the drain of the second PMOS transistor Q3 is electrically connected to the first LED lamp group B1.

Specifically, when the NPN transistor Q2 is turned on, the gate of the second PMOS transistor Q3 is grounded GND after passing through the collector and the emitter of the NPN transistor Q2, and the second PMOS transistor Q3 is turned on. The first voltage V1 is input to the first LED lamp group B1 after passing through the source electrode and the drain electrode of the second PMOS tube Q3 so as to provide power supply voltage for the first LED lamp group B1, and the first LED lamp group B1 can emit light.

When the NPN transistor Q2 is turned off, the electrical connection between the gate of the second PMOS transistor Q3 and the ground GND is disconnected, and the second PMOS transistor Q3 is turned off. The electrical connection between the first voltage V1 and the first LED lamp group B1 is disconnected, the first LED lamp group B1 does not input the power supply voltage, and the first LED lamp group B1 stops emitting light.

In another embodiment, the second switching sub-branch a12 further includes a third resistor R3, a fourth resistor R4 and a fifth resistor R5.

The first end of the third resistor R3 is electrically connected to the third end of the first switching sub-circuit a11, the second end of the third resistor R3 is electrically connected to the first end of the fourth resistor R4 and the gate of the second PMOS transistor Q3, the second end of the fourth resistor R4 is electrically connected to the first end of the fifth resistor R5 and the source of the second PMOS transistor Q3, and the second end of the fifth resistor R5 is electrically connected to the boost sub-circuit 222.

Specifically, the third resistor R3 is a pull-down resistor. The fourth resistor R4 is a pull-up resistor. The fifth resistor R5 is a current limiting resistor.

In some embodiments, referring back to fig. 1, the mask 10 is further provided with a first interface 12, and the control box 20 is further provided with a second interface 21.

The first interface 12 and the second interface 21 may be electrically connected through a data line, and the second interface 21 is electrically connected to the controller 221. In some embodiments, both the first interface 12 and the second interface 21 are provided as the same USB interface, such as a TYPE-C interface.

In an embodiment, referring to fig. 7, a fifth resistor R5 is further disposed on the mask 10. The control circuit 20 further includes a sixth resistor R6 and a seventh resistor R7.

Wherein the fifth resistor R5 is electrically connected to the first pin of the first interface 12. The first end of the sixth resistor R6 is electrically connected to the second pin in the second interface 21, the second end of the sixth resistor R6 is electrically connected to the controller 221 and the first end of the seventh resistor R7, and is electrically connected to the node P1, and the second end of the seventh resistor R7 is electrically connected to the second voltage V2.

Where the first interface 12 and the second interface 21 may be electrically connected through a data line, the first pin and the second pin are electrically connected through a broken line LIN1 as shown in fig. 7.

Specifically, the fifth resistor R5 is a pull-down resistor. The sixth resistor R6 is used to prevent static electricity to improve the anti-jamming capability. The seventh resistor R7 is a pull-up resistor.

In practical applications, when the first interface 12 is not electrically connected to the second interface 21 through the data line, the controller 221 obtains the voltage of the node P1 as the second voltage V2. At this point, the controller 221 may determine that the mask 10 is not connected to the control box 20. In turn, the control box 20 does not have any output even if a corresponding operation is performed on the control box 20, for example, different care modes are set. Therefore, the damage of the beauty instrument 1 or other equipment caused by misoperation of a user (such as inserting other equipment) can be prevented, the service life of the beauty instrument 1 can be prolonged, and the safety of products can be improved.

When the first interface 12 is electrically connected to the second interface 21 through the data line, the controller 221 obtains that the voltage of the node P1 is a fixed voltage, and when the fixed voltage is not equal to the second voltage V2. At this point, the controller 221 may determine that the mask 10 has been accessed into the control box 20. Then, when the user controls the control box 20 to perform a corresponding operation, the control box 20 can have a corresponding output.

In addition, when other devices than the mask 10 access the control box 20 through the data line, the voltage of the node P1 acquired by the controller 221 is a non-fixed voltage. At this time, the control box 20 also stops outputting, which is advantageous for improving the reliability and safety of the cosmetic instrument 1.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order, and there are many other variations of the different aspects of the application as described above, which are not provided in detail for the sake of brevity; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. A cosmetic apparatus, comprising:

The mask is provided with N LED lamp groups, any LED lamp group comprises M LED lamp columns, each LED lamp column comprises K LED lamps which are connected in series, wherein light emitted by each LED lamp can act on skin to care the skin, and M, N, K is an integer which is more than or equal to 1;

The control box is provided with a control circuit for providing power supply voltage for the LED lamps, and the control circuit comprises a controller, a boosting branch and N lamp group control branches;

The boost branch is electrically connected with an input power supply and the controller respectively, and is configured to operate in response to an enabling signal output by the controller so as to boost the voltage of the input power supply to a first voltage;

The N lamp group control branches are electrically connected with the N LED lamp groups in a one-to-one correspondence manner, and are also respectively electrically connected with the boosting branches and the controller, and the lamp group control branches are configured to be alternately turned on and off in response to pulse width modulation signals output by the controller, and establish or disconnect the electrical connection between the boosting branches and the LED lamp groups so as to supply power to the LED lamp groups based on the first voltage.

2. The cosmetic apparatus of claim 1, wherein the boost branch comprises a boost chip, an inductor, and a first PMOS tube;

The first end of the inductor and the power supply pin of the boost chip are electrically connected with the input power supply, the switch pin of the boost chip is electrically connected with the second end of the inductor, the driving pin of the boost chip is electrically connected with the grid electrode of the first PMOS tube, the output pin of the boost chip is electrically connected with the source electrode of the first PMOS tube, and the drain electrode of the first PMOS tube is electrically connected with the lamp set control branch circuit.

3. The cosmetic apparatus of claim 1, wherein the light bank control branch comprises a first switch sub-branch and a second switch sub-branch;

The first end of the first switch sub-branch is electrically connected with the controller, the second end of the first switch sub-branch is grounded, the third end of the first switch sub-branch is electrically connected with the first end of the second switch sub-branch, the second end of the second switch sub-branch is electrically connected with the boost branch, and the third end of the second switch sub-branch is electrically connected with the LED lamp group;

The first switching sub-branch is configured to alternately turn on and off in response to the pulse width modulation signal to establish or break an electrical connection between the first end of the second switching sub-branch and ground;

The second switch sub-branch is configured to conduct when a first end of the second switch sub-branch is grounded and establish an electrical connection between the boost branch and the LED light bank to power the LED light bank based on the first voltage, and is configured to disconnect when a connection between the first end of the first switch sub-branch and ground is broken and to disconnect the electrical connection between the boost branch and the LED light bank to stop powering the LED light bank.

4. The cosmetic apparatus of claim 3 wherein the first switch subcircuit comprises an NPN transistor;

The base electrode of the NPN type triode is electrically connected with the controller, the emitting electrode of the NPN type triode is grounded, and the collecting electrode of the NPN type triode is electrically connected with the second switch sub-branch circuit.

5. The cosmetic apparatus of claim 4, wherein the first switching subcircuit further comprises a first resistor and a second resistor;

The first end of the first resistor is electrically connected with the controller, the second end of the first resistor is electrically connected with the base electrode of the NPN triode and the first end of the second resistor respectively, and the second end of the second resistor is grounded.

6. The cosmetic apparatus of claim 3, wherein the second switch subcircuit comprises a second PMOS tube;

The grid electrode of the second PMOS tube is electrically connected with the third end of the first switch subcircuit, the source electrode of the second PMOS tube is electrically connected with the boost subcircuit, and the drain electrode of the second PMOS tube is electrically connected with the LED lamp group.

7. The cosmetic apparatus of claim 6, wherein the second switching sub-branch further comprises a third resistor, a fourth resistor, and a fifth resistor;

The first end of the third resistor is electrically connected with the third end of the first switch subcircuit, the second end of the third resistor is electrically connected with the first end of the fourth resistor and the grid electrode of the second PMOS tube respectively, the second end of the fourth resistor is electrically connected with the first end of the fifth resistor and the source electrode of the second PMOS tube respectively, and the second end of the fifth resistor is electrically connected with the boost subcircuit.

8. The cosmetic apparatus of claim 1, wherein the mask is further provided with N x M current limiting resistors;

each current limiting resistor is connected in series with one of the LED lamp strings.

9. The cosmetic apparatus of claim 1, wherein the mask is further provided with a first interface, and the control box is further provided with a second interface;

The first interface and the second interface may be electrically connected through a data line, and the second interface is electrically connected with the controller.

10. The cosmetic apparatus of claim 9, wherein a fifth resistor is further provided on the mask, the fifth resistor being electrically connected to a first pin in the first interface;

the control circuit further comprises a sixth resistor and a seventh resistor, wherein the first end of the sixth resistor is electrically connected with the second pin in the second interface, the second end of the sixth resistor is electrically connected with the controller and the first end of the seventh resistor, and the second end of the seventh resistor is electrically connected with a second voltage;

When the first interface and the second interface can be electrically connected through a data line, the first pin and the second pin are electrically connected.