Portable beauty instrument and control circuit thereof
The control circuit with dual-voltage branches and trigger units enables multiple operation modes in beauty instruments, addressing the limitation of single-function near-infrared light devices by adding pulse light for deeper skin penetration.
Patent Information
- Application Number
- PCT/CN2025/086995
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-04-12
- Filing Date
- 2025-04-02
- Publication Date
- 2025-10-16
AI Technical Summary
Existing beauty instruments that provide near-infrared light can only adjust light intensity by controlling operation voltage, resulting in a single function and narrow application range.
A control circuit with a power supply unit having two branches providing different voltages, a control unit to output DC power and drive signals, and trigger units for near-infrared and pulse light, enabling multiple operation modes by powering near-infrared light for the skin's surface and pulse light for deeper layers.
Enriches the irradiation functions of beauty instruments, broadening their application range by allowing simultaneous near-infrared and pulse light emission for enhanced skin treatment.
Smart Images

Figure CN2025086995_16102025_PF_FP_ABST
Abstract
Description
PORTABLE BEAUTY INSTRUMENT AND CONTROL CIRCUIT THEREOFCROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to Chinese Patent Application No. 202420768302.2, filed on April 12, 2024. The disclosure of the above mentioned application is incorporated herein by reference in its entirety.TECHNICAL FIELD
[0002] The present application relates to beauty instrument technologies, and in particular to a portable beauty instrument and a control circuit thereof.BACKGROUND
[0003] As one of the skin care tools, beauty instruments are simple to use and easy to operate, and thus favorable to consumers. Various beauty instruments are available in the market. For example, contact-electrode-type beauty instruments include radio frequency beauty instruments, micro-current beauty instruments and the like. Irradiation-type beauty instruments include light-emitting diode (LED) beauty instruments, beauty instruments for providing near-infrared light (also called milk light) and the like. A beauty instrument for providing near-infrared light in the related art can irradiate near-infrared light onto the surface layer of the skin of the subject for skin care.
[0004] However, the beauty instrument for providing near-infrared light in the related art can only adjust the intensity of irradiating the near-infrared light by controlling the operation voltage of the near-infrared light trigger unit, and thus has a single function and a narrow application range.SUMMARY
[0005] In view of the above issue, a control circuit for a portable beauty instrument according to some embodiments of the present application includes: a power supply unit, including a first power supply branch and a second power supply branch, where an output voltage output from the first power supply branch is less than an output voltage output from the second power supply branch; a pulse light trigger unit, connected to the second power supply branch and configured to periodically trigger pulse light according to a drive signal; a control unit having a terminal connected to the first power supply branch and another terminal connected to the pulsed light triggering unit, where the control unit is configured to output the drive signal and / or output a first direct current (DC) power based on electrical energy provided by the first power supply branch; and a near-infrared light trigger unit connected to the control unit and configured to operate according to the first DC power to provide near-infrared light.
[0006] In an embodiment, the power supply unit further includes: an alternating current-direct current (AC-DC) conversion unit, connected to the first power supply branch and the second power supply branch respectively, and configured to connect to a power source, perform voltage conversion according to an AC power from the power source, and output an initial DC power, and where the first power supply branch is configured to perform voltage conversion on the initial DC power to output first operation power; and the second power supply branch is configured to perform voltage conversion on the initial DC power to output second operation power.
[0007] In an embodiment, the pulse light trigger unit includes: an energy storage unit, connected to the second power supply branch and configured to store electric energy from the second operation power; a light-emitting unit having a terminal connected to the energy storage unit; and a switch unit connected to the control unit and connected between the light-emitting unit and a ground to turn on / off a path between the light-emitting unit and the ground based on the drive signal, so that the light-emitting unit is powered by the energy storage unit, and when the path between the light-emitting unit and the ground is turned on, the pulsed light is triggered by the light-emitting unit.
[0008] In an embodiment, the light-emitting unit includes a lamp and a trigger; the lamp is connected in parallel with the trigger to form a first node connected to the energy storage unit and a second node connected to the switch unit; the trigger is configured to apply a target voltage to the lamp according to the electric energy from the energy storage unit to ionize a gas in the lamp; and the lamp is configured to trigger the pulse light according to the electric energy from the energy storage unit.
[0009] In an embodiment, the switch unit includes a switch transistor; and the switch transistor has a control terminal connected to the drive unit, a first potential terminal connected to the light-emitting unit, and a second potential terminal being grounded.
[0010] In an embodiment, the energy storage unit includes at least a first capacitor, a first terminal of the first capacitor is connected to the second power supply branch, and a second terminal of the first capacitor is connected to the first node.
[0011] In an embodiment, the control unit includes a master unit, a DC voltage conversion unit, and a drive unit, where the DC voltage conversion unit is connected to the first power supply branch, and configured to convert the first operation power based on a first control signal to output the first DC power; the drive unit is connected to the pulse light trigger unit and configured to output the drive signal according to a drive control signal; and the master unit is connected to the DC voltage conversion unit and the drive unit, and configured to output the drive control signal to the drive unit and output the first control signal to the DC voltage conversion unit.
[0012] In an embodiment, the lamp includes at least one xenon lamp.
[0013] In an embodiment, the near-infrared light trigger unit includes at least one halogen lamp or at least one xenon lamp.
[0014] A portable beauty instrument according to some embodiments of the present application includes a housing and the portable beauty instrument further includes the control circuit of the portable beauty instrument according to any of the above embodiments.
[0015] Compared with the prior art, the embodiments of the present application can achieve the following beneficial effects: when the near-infrared light trigger unit is powered by the first power supply branch of the power supply unit to trigger the near-infrared light to irradiate the surface layer of the skin, the pulse light trigger unit can be powered by the second power supply branch of the power supply unit to periodically trigger the pulse light to irradiate the deep layer of the skin, so that the portable beauty instrument can operate in several irradiation modes, thereby enriching the irradiation function of the beauty instrument and broadening the application range of the beauty instrument.BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a schematic block diagram of a control circuit for a portable beauty instrument according to some embodiments of the present application.
[0017] FIG. 2 is a schematic block diagram of a control circuit for a portable beauty instrument according to some embodiments of the present application.
[0018] FIG. 3 is a schematic circuit diagram of a pulse light trigger unit in a control circuit for a portable beauty instrument according to some embodiments of the present application.
[0019] FIG. 4 is a schematic block diagram of a portable beauty instrument according to some embodiments of the present application.
[0020] FIG. 5 is a schematic block diagram of a control circuit for a portable beauty instrument according to some other embodiments of the present application.DETAILED DESCRIPTION
[0021] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments are described for illustrative purposes only and are not intended to limit the present application.
[0022] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.
[0023] It should be understood that the orientation or positional relationship indicated by the terms “length” , “width” , “upper” , “lower” , “front” , “rear” , “left” , “right” , “vertical” , “horizontal” , “top” , “bottom” , “inner” , “outer” and the like is based on the orientation or positional relationship shown in the drawings, and is merely used to facilitate and simplify the description of the present application, rather than indicate or imply that the devices or elements referred to herein are required to have specific orientations or be constructed or operate in the specific orientations. Accordingly, the terms should not be construed as limiting the present application.
[0024] In addition, the term "first" , "second" are for illustrative purposes only and are not to be construed as indicating or imposing a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature limited by "first" , "second" may expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "plural" is two or more, unless otherwise specifically defined.
[0025] Currently, most of the beauty instruments on the market are equipped with illumination units or light-emitting units, such as LED beauty instruments using LEDs as light sources thereof, near-infrared light (also referred to be milk light) beauty instruments using halogen lamps as light sources thereof, etc.
[0026] However, both the LED beauty instrument and the near-infrared light beauty instrument can only adjust the illumination intensity of the light provided by the beauty instrument by controlling the LED or the operation voltage of the near-infrared light trigger unit, and thus has a relatively single function and a narrower application range.
[0027] In order to solve the above technical problem, an embodiment of the present application provides a control circuit of a portable beauty instrument, including: a power supply unit, a pulse light trigger unit, a control unit, and a near-infrared light trigger unit. An output voltage (or be referred to be a first voltage) output from the first power supply branch in the power supply unit is less than an output voltage (or be referred to be a second voltage) output from the second power supply branch in the power supply unit. A terminal of the control unit is connected to the first power supply branch, and the other terminal is connected to the pulse light trigger unit. The pulse light trigger unit is connected to the second power supply branch. The near-infrared light trigger unit is connected to the control unit. The control unit outputs the first direct current (DC) power to the near-infrared light trigger unit, so that the near-infrared light trigger unit may perform the operation with the first DC power, to provide near-infrared light. In addition, the control unit further outputs a drive signal to the pulse light trigger unit, so that the pulse light trigger unit may periodically trigger the pulse light based on the drive signal.
[0028] In the above embodiment, the first power supply branch and the second power supply branch in the power supply unit may respectively provide different power supply requirements for the portable beauty instrument, and the control unit is configured to output the first DC power to the near-infrared light trigger unit and output the drive signal to the pulse light trigger unit, so that the near-infrared light trigger unit may operate with the first DC power, to provide the near-infrared light. Meanwhile, the pulse light trigger unit may periodically trigger the pulse light based on the drive signal. When the near-infrared light trigger unit is powered by the first power supply branch of the power supply unit to trigger the near-infrared light to irradiate the surface layer of the skin, the pulse light trigger unit can be powered by the second power supply branch of the power supply unit to periodically trigger the pulse light to irradiate the deep layer of the skin, so that the portable beauty instrument can operate in several irradiation modes, thereby enriching the irradiation function of the beauty instrument and broadening the application range of the beauty instrument.
[0029] FIG. 1 is a schematic block diagram of a control circuit of a portable beauty instrument according to some embodiments of the present application. For ease of description, only parts related to the presented embodiment are shown, and details are provided as follows.
[0030] In FIG. 1, the control circuit 100 of the portable beauty instrument includes a power supply unit 10, a pulse light trigger unit 20, a control unit 30, and a near-infrared light trigger unit 40.
[0031] The power supply unit 10 includes a first power supply branch 11 and a second power supply branch 12, and an output voltage output from the first power supply branch 11 is less than an output voltage output from the second power supply branch 12. The pulse light trigger unit 20 is connected to the second power supply branch 12 and is configured to periodically generate pulse light based on a drive signal from the control unit 30. The control unit 30 has a terminal connected to the first power supply branch 11 and another terminal connected to the pulse light trigger unit 20, and is configured to output the drive signal and to output / supply a first DC power with electric energy (or be referred to be a first operation power) provided by the first power supply branch 11. The near-infrared light trigger unit 40 is connected to the control unit 30 and configured to operate with the first DC power to provide near-infrared light.
[0032] In an embodiment, the control circuit 100 of the portable beauty instrument may be configured in a main body of the portable beauty instrument. The power supply unit 10 may be configured in a power adapter connected to the main body. In actual use, after the power adapter is connected to a power source, the power supply unit 10 processes an electric energy (or the power) provided by the power source, and outputs at least two voltages through the first power supply branch 11 and the second power supply branch 12, respectively. It may be understood that the power source may output an alternating current (AC) power or a DC power, which is not limited herein.
[0033] It should be noted that the output voltage output from the first power supply branch 11 is less than the output voltage output from the second power supply branch 12. Therefore, during specific implementation, each unit in the control circuit 100 of the portable beauty instrument may be connected to the first power supply branch 11 and / or the second power supply branch 12 according to a requirement of the unit for the operation voltage thereof.
[0034] In all embodiments of the present application, the pulse light trigger unit 20 is configured to periodically generate the pulse light based on the drive signal. Since the pulse light acts on the deeper layer of the skin, that is, the generating of the pulse light needs a greater amount of electric energy, the pulse light trigger unit 20 may be connected to the second power supply branch 12. The operation voltage required by the control unit 30 is less, so the control unit 30 may be connected to the first power supply branch 11.
[0035] As shown in FIG. 1, the pulse light trigger unit 20 is connected to the second power supply branch 12, and the second power supply branch 12 provides charging electrical energy (or be referred to as a second operation power) for the pulse light trigger unit 20. A terminal of the control unit 30 is connected to the first power supply branch 11, that is, the operation power for the control unit 30 may be obtained from the first power supply branch 11 for operation. Meanwhile, another terminal of the control unit 30 is connected to the pulse light trigger unit 20, a drive signal from the control unit 30 may be output to the pulse light trigger unit 20, and thus the pulse light trigger unit 20 is controlled to periodically generate the pulse light based on the drive signal. Here, the drive signal may be understood as a signal for controlling the pulse light trigger unit 20 to generate the pulse light. In an example, the drive signal may include a high-level part and a low-level part. In response to the pulse light trigger unit 20 receiving the high-level part, the pulse light trigger unit 20 generates the pulse light. In response to the pulse light trigger unit 20 receiving the low-level part, the pulse light trigger unit 20 stops to generate the pulse light. It is easy to understand that the cycle, frequency, or duty ratio of the pulse light generated by the pulse light trigger unit 20 may be adjusted by adjusting the distribution of the high-level part and the low-level part in the drive signal.
[0036] It can be understood that, in other embodiments, the drive signal may be a sine wave electrical signal, and by controlling the interval between the peak and the valley of the sine wave electrical signal, the cycle, frequency or duty ratio of the pulse light generated by the pulse light trigger unit 20.
[0037] As an example, the cycle, frequency or duty ratio of the pulse light may be adjusted by adjusting the pulse width of the drive signal. Here, the pulse width refers to the duration of the active level of the drive signal. Taking the high-level of the drive signal being an active level as an example, the duration of the high-level of the drive signal is the pulse width thereof. The greater the pulse width of the drive signal, the stronger the energy of a single pulse of the pulse light generated by the pulse light trigger unit 20.
[0038] Taking the triggering of periodic pulse light at a frequency of 8 Hz as an example, assume that the unit cycle for triggering the pulse light is 1 second, i.e., 1000 milliseconds. The triggering of periodic pulse light at a frequency of 8 Hz means that the light is emitted 8 times within 1 second, that is, the pulse light is triggered 8 times. Based on this, the interval duration for each pulse of the pulse light may be set to 125 milliseconds, that is, one second may be divided into eight intervals of 125 milliseconds. Correspondingly, the duration of each low-level of the drive signal is 125 milliseconds, and the duration of each high-level of the drive signal is 0.09 milliseconds.
[0039] It can be understood that, in an example, the control unit 30 may be configured to output drive signals with different high-level durations according to actual requirements, to drive the pulse light trigger unit 20 to generate the pulse light with different light-emitting cycles. The high-level duration of the drive signal is the effective pulse width, and the low-level duration of the drive signal corresponds to the time interval between the effective pulse widths. The longer the duration of the high-level is, the longer the duration of the single strong pulse ray triggered by the strong pulse light source is, and correspondingly, the energy of the strong pulse light is greater. The longer the duration of the low-level of the drive signal, the longer the time interval between two adjacent strong pulse rays triggered by the strong pulse light source.
[0040] In this embodiment, the near-infrared light trigger unit 40 is connected to the control unit 30, and the control unit 30 may further output the first DC power to the near-infrared light trigger unit 40 with the electrical energy provided by the first power supply branch 11. Here, the first DC power is used as the operation power for the near-infrared light trigger unit 40. In an embodiment, a DC voltage conversion circuit may be configured in the control unit 30, to perform conversion on the voltage value of the voltage output by the first power supply branch 11, to output the first DC power that is adapted to the near-infrared light trigger unit 40.
[0041] It is easy to understand that in practical applications, the control unit 30 may output a plurality of DC powers with different voltage values as the first DC powers, and the near-infrared light trigger unit 40 may output near-infrared light with different illumination intensity according to the first DC powers with different voltage values. Herein, the illumination intensity of the near-infrared light is positively correlated with the voltage value of the first DC power.
[0042] In actual use, the control unit 30 may output the first DC power to the near-infrared light trigger unit 40, and output the drive signal to the pulse light trigger unit 20. The near-infrared light trigger unit 40 operates with the first DC power to provide the near-infrared light, and the pulse light trigger unit 20 periodically generates the pulse light based on the drive signal. Meanwhile, the near-infrared light trigger unit 40 continuously provides the near-infrared light, which acts on the skin together with the pulse light periodically generated by the pulse light trigger unit 20. That is, the control circuit 100 provides the near-infrared light to the surface layer of the skin, it may also periodically provide the pulse light to act on the deep layer of the skim in the same skin region, which may effectively improve the skin maintenance efficiency of the portable beauty instrument.
[0043] In practical applications, the control instruction may be transmitted to the control unit 30, to instruct the control unit 30 to output the drive signal and / or the first DC power, thereby realizing switching between different operation modes of the portable beauty instrument.
[0044] For example, a functional button may be configured in the control circuit of the portable beauty instrument for the user to trigger an operation instruction.
[0045] For example, when the user triggers a first operation instruction to the control unit 30 through the functional button, the control unit 30 may output the first DC power to the near-infrared light trigger unit 40 based on the first working instruction only with the electrical energy provided by the first power supply branch, and meanwhile, the portable beauty instrument only emits the near-infrared light through the near-infrared light trigger unit 40.
[0046] For another example, when the user triggers a second operation instruction to the control unit 30 through the functional button, the control unit 30 may only output the drive signal to the pulse light trigger unit 20 based on the second operation instruction, and meanwhile, the portable beauty instrument may only periodically generate the pulse light through the pulse light trigger unit 20.
[0047] For another example, when the user triggers a third operation instruction to the control unit 30 through the functional button, the control unit 30 may output the drive signal based on the third operation instruction, and output the first DC power with the electrical energy provided by the first power supply branch.
[0048] FIG. 2 is a schematic block diagram of a control circuit of a portable beauty instrument according to some embodiments of the present application. As shown in FIG. 2, in an embodiment, the power supply unit 10 further includes an AC-DC conversion unit 101.
[0049] The AC-DC conversion unit 101 is respectively connected to the first power supply branch 11 and the second power supply branch 12. The AC-DC conversion unit 101 is configured to be connected to the power source, and to perform voltage conversion on an AC power provided by the power source to output an initial DC power. The first power supply branch 11 is configured to perform voltage conversion on the initial DC power to output first operation power. The second power supply branch 12 is configured to perform voltage conversion on the initial DC power to output second operation power, and a voltage (or be referred to be the second voltage) of the second operation power is greater than a voltage (or be referred to be the first voltage) of the first operation power.
[0050] In an embodiment, the AC-DC conversion unit 101 uses the AC power provided by the power source as an input, performs DC conversion on the AC power to obtain the initial DC power, and outputs the initial the DC power to the first power supply branch 11 and the second power supply branch 12.
[0051] In an example, the AC-DC conversion unit 101 may rectify the AC power provided by the power source by using select a current half-wave rectifier circuit, a current full-wave rectifier circuit, or a current bridge rectifier circuit, to output the initial DC power.
[0052] For example, the power source is a utility power, and the AC-DC conversion unit 101 may convert an AC power output by the utility power to obtain the initial DC power. The first power supply branch 11 performs voltage conversion on the initial DC power. For example, the first power supply branch 11 steps down the initial DC power to output the first operation power whose voltage value is within a range of 3-30V. The second power supply branch 12 performs voltage conversion on the initial DC power. For example, the second power supply branch 12 boosts the initial DC power, and outputs second operation power with a voltage value in the range of 50 V to 350V. It may be understood that because both the AC-DC conversion and the DC voltage conversion may be implemented by using a current conversion circuit or transformation circuit, details are not described herein again.
[0053] As shown in FIG. 2, in an embodiment, the control unit 30 includes a master unit 31, a DC voltage conversion unit 32, and a drive unit 33.
[0054] The DC voltage conversion unit 32 is connected to the first power supply branch 11. The DC voltage conversion unit 32 is configured to convert the first operation power based on the first control signal to output the first DC power. The drive unit 33 is connected to the pulse light trigger unit 20 and configured to output the drive signal based on a drive control signal from the master unit 31. The master unit 31 is connected to the DC voltage conversion unit 32 and the drive unit 33, and is configured to output the drive control signal to the drive unit 33 and output the first control signal to the DC voltage conversion unit 32.
[0055] In an embodiment, the DC voltage conversion unit 32 is further connected to the near-infrared light trigger unit 40. The master unit 31 may output the first control signal to the DC voltage conversion unit 32, to instruct the DC voltage conversion unit 32 to convert the first operation power and to further output the first DC power to the near-infrared light trigger unit 40. Meanwhile, the master unit 31 may further output the drive control signal to the drive unit 33, and the drive unit 33 may output a corresponding drive signal to the pulse light trigger unit 20 based on the drive control signal.
[0056] in an embodiment, the master unit 31 may be implemented by building a corresponding control circuit based on a microcontroller unit (MCU) . The DC voltage conversion unit 32 may be implemented by a voltage conversion circuit constructed based on a DC-DC conversion chip, and the voltage conversion circuit may output the first DC powers with different voltage values by using, as an input, first operation power provided by the first power supply branch 11. The drive unit 33 may be composed of a drive circuit constructed by using a current switch drive chip. The drive circuit outputs a drive signal to a circuit switch in the pulse light trigger unit 20 in response to the drive control signal output by the master unit 31, to drive the pulse light trigger unit 20.
[0057] In an example, the first operation power provided by the first power supply branch 11 may include the DC power of 24 V to 30 V, and the DC voltage conversion unit 32 performs voltage conversion on the first operation power, to output the first DC power of 15 V, 20 V, or 24 V to the near-infrared light trigger unit 40. Here, the near-infrared light trigger unit 40 may operate in different states with the first DC powers having different voltage values, thereby providing the near-infrared light with different illumination intensities.
[0058] It is easy to understand that in other embodiments, when the first power supply branch 11 may output the first DC power adapted to the near-infrared light trigger unit 40, the DC voltage conversion unit 32 in the control unit 30 may be replaced with a switch unit, as shown in FIG. 5. That is, the master unit 31 may output the first control signal to the switch unit, to instruct the switch unit to turn on the path between the first power supply branch 11 and the near-infrared light trigger unit 40. That is, the first power supply branch 11 directly outputs the first DC power to the near-infrared light trigger unit 40.
[0059] As shown in FIG. 2, as an embodiment, the pulse light trigger unit 20 includes an energy storage unit 21, a light-emitting unit 22, and a switch unit 23.
[0060] The energy storage unit 21 is connected to the second power supply branch 12 and is configured to store electric energy from the second operation power. The light-emitting unit 22 has a terminal connected to the energy storage unit. The switch unit 23 is connected to the control unit 30 and is connected between the light-emitting unit 22 and the ground, to turn on / off a path between the light-emitting unit 22 and the ground based on the drive signal, so that the light-emitting unit 22 may be powered by the energy storage unit 21 to trigger the pulse light when the path between the light-emitting unit 22 and the ground is turned on.
[0061] In this embodiment, the energy storage unit 21 may include an energy storage circuit composed of energy storage elements, e.g., at least one capacitor, for storing the electric energy. In an embodiment, two or more capacitors may be connected in parallel to form the energy storage unit 21 for storing the electric energy according to actual needs.
[0062] It is easy to understand that in an embodiment, the energy storage unit 21 is connected to the second power supply branch 12, and the second operation power provided by the second power supply branch 12 is used as the charging electrical energy for charging. When the switch unit 23 receives the drive signal, the circuit between the light-emitting unit 22 and the ground is turned on and off based on the drive signal, to periodically trigger the pulse light.
[0063] In an embodiment, the switch unit 23 may be an electronic switch circuit constructed by using a current switch transistor, or may be implemented by using another current electronic switch circuit.
[0064] FIG. 3 is a schematic circuit diagram of a pulse light trigger unit in a control circuit of a portable beauty instrument according to some embodiments of the present application. Referring to FIG. 2 and FIG. 3, as an embodiment, the light-emitting unit 22 includes a lamp D and a trigger L1. The lamp D and the trigger L1 are connected in parallel between the energy storage unit 21 and the switch unit 23. Specifically, the lamp D is connected in parallel with the trigger L1 between a first node P1 and a second node P2, the first node P1 is connected to the energy storage unit 21, and the second node P2 is connected to the switch unit 23. In an embodiment, both the lamp D and the trigger L1 are powered by the energy storage unit 21. The trigger L1 is configured to apply a target voltage to the lamp D with the electric energy from the energy storage unit 21 to ionize the gas in the lamp D. The lamp D is configured to trigger pulse light with the electric energy from the energy storage unit 21.
[0065] As shown in FIG. 3, in an embodiment, the energy storage unit 21 includes at least a first capacitor C1, a first terminal of the first capacitor C1 is connected to the second power supply branch 12, and a second terminal of the first capacitor C1 is connected to the first node P1.
[0066] In an embodiment, the first terminal of the first capacitor C1 may be used as an input terminal of the energy storage unit 21, and may be configured to be connected to the second power supply branch 12, to be charged by using the second operation power provided by the second power supply branch 12. A second terminal of the first capacitor C1 may be electrically connected to the lamp D and the trigger L1 through the first node P1, to provide power to the lamp D and the trigger L1 after the first capacitor C1 is charged.
[0067] With reference to FIG. 3 and FIG. 4, in an embodiment, the switch unit 23 includes a switch transistor Q. A controlled terminal of the switch transistor Q is connected to the drive unit 33, a first potential terminal of the switch transistor Q is connected to the light-emitting unit 22, and a second potential terminal of the switch transistor Q is grounded.
[0068] In an embodiment, the switch transistor Q may be an IGBT transistor. As an example, in a specific implementation, the lamp D may be a xenon lamp. The trigger L1 applies the target voltage to the lamp D with the operation voltage, thereby ionizing the xenon gas in the lamp D. The drive unit 33 may output the drive signal to the switch transistor Q based on the drive control signal, to control the switch transistor Q to periodically turn on / off the path between the light-emitting unit 22 and the ground. Here, when the path between the light-emitting unit 22 and the ground are turned on by using the switch transistor Q, since the lamp D and the trigger L1 are connected in parallel between the first capacitor C1 and the ground, the pulse light may be triggered with the power provided by the first capacitor C1. When the path between the light-emitting unit 22 and the ground are turned off by using the switch transistor Q, both the lamp D and the trigger L1 are in a turn-off state, thereby stopping the triggering of the pulse light. That is, the drive unit 33 outputs the drive signal to the switch transistor Q to control the switch transistor Q to periodically turn on / off the path between the switch transistor Q and the ground, so that the lamp D and the trigger L1 connected in parallel operate periodically, thereby realizing the periodic triggering of the pulse light.
[0069] In an embodiment, the lamp D includes at least one xenon lamp. Correspondingly, the trigger L1 may be disposed around the xenon lamp, and may ionize the xenon gas in the xenon lamp when powered on. That is, at least one xenon lamp is connected in parallel with at least one trigger L1. In another practical application, the number of xenon lamps may be configured according to actual needs, and correspondingly, the number of triggers L1 may also vary accordingly.
[0070] In an embodiment, the near-infrared light trigger unit 40 includes at least one halogen lamp or at least one xenon lamp.
[0071] It may be understood that the near-infrared light trigger unit 40 is configured to operate with the first DC power to provide the near-infrared light, and the near-infrared light may also be called milk light, and refers to near-infrared light with a wavelength in the range of 900 nm to 1800 nm. Based on this, in an embodiment, any existing lamp capable of providing the near-infrared light may be used as the light source of the near-infrared light trigger unit 40, and details are not described herein again.
[0072] In an embodiment of the present application, the first power supply branch and the second power supply branch in the power supply unit may respectively provide different power supply requirements for the portable beauty instrument, and the control unit is configured to output the first DC power to the near-infrared light trigger unit and output the drive signal to the pulse light trigger unit, so that the near-infrared light trigger unit may operate with the first DC power, to provide the near-infrared light. Meanwhile, the pulse light trigger unit may periodically trigger the pulse light based on the drive signal. The near-infrared light trigger unit is powered by the first power supply branch of the power supply unit to trigger the near-infrared light to irradiate the surface layer of the skin, the pulse light trigger unit can be powered by the second power supply branch of the power supply unit to periodically trigger the pulse light to irradiate the deep layer of the skin, so that the portable beauty instrument can operate in several irradiation modes, thereby enriching the irradiation function of the beauty instrument and broadening the application range of the beauty instrument.
[0073] FIG. 4 shows a schematic block diagram of a portable beauty instrument according to some embodiments of the present application. As shown in FIG. 4, the portable beauty instrument 200 includes a housing and the above-described control circuit 100 mounted on the housing.
[0074] It may be understood that, in the embodiment shown in FIG. 4, because improvements and specific implementations related to the present application have been described in detail in the embodiments corresponding to FIG. 1 to FIG. 3, details are not described herein again.
[0075] It may be clearly understood by a person skilled in the art that, for convenient and brief description, division of the above functional units and modules is merely used as an example for description. In actual application, the above functions may be allocated to different functional units and modules as required. That is, an internal structure of the apparatus is divided into different functional units or modules, to complete all or some of the functions described above. Functional units and modules in the embodiments may be integrated into one processing unit, or respective ones of the units may physically exist independently, or two or more units are integrated into one unit. The integrated unit may be implemented in a form of hardware, or may be implemented in a form of a software functional unit.
[0076] Some embodiments of the present application have been described in detail above. The embodiments are described for illustrative purposes only and are not intended to limit the present application. Many modifications or equivalent substitutions with respect to the embodiments may occur to those of ordinary skill in the art based on the present application and thus shall fall within the scope of the present application.
Claims
1.A control circuit for a portable beauty instrument, comprising:a power supply unit, comprising a first power supply branch for supplying a first operation power having a first voltage, and a second power supply branch for supplying a second operation power having a second voltage greater than the first voltage;a control unit connected to the first power supply branch, the control unit being configured to output a drive signal and to supply a first direct current (DC) power with the first operation power;a pulse light trigger unit, connected to each of the second power supply branch and the control unit, and configured to periodically trigger pulse light based on the drive signal; anda near-infrared light trigger unit connected to the control unit and configured to operate with the first DC power to trigger near-infrared light.2.The control circuit of claim 1, wherein the power supply unit further comprises:an alternating current-direct current (AC-DC) conversion unit, connected to each of a power source, the first power supply branch, and the second power supply branch, and configured to perform voltage conversion on an AC power from the power source to output an initial DC power, andwherein the first power supply branch is configured to perform voltage conversion on the initial DC power to supply the first operation power; andthe second power supply branch is configured to perform voltage conversion on the initial DC power to supply the second operation power.3.The control circuit of claim 1 or 2, wherein the pulse light trigger unit comprises:an energy storage unit, connected to the second power supply branch and configured to store electric energy from the second operation power;a light-emitting unit connected to the energy storage unit; anda first switch unit connected to the control unit and connected between the light-emitting unit and a ground to turn on / off a path between the light-emitting unit and the ground based on the drive signal,wherein the light-emitting unit is powered by the energy storage unit to trigger the pulse light when the path between the light-emitting unit and the ground is turned on.4.The control circuit of claim 3, wherein the light-emitting unit comprises a lamp and a trigger connected in parallel between a first node connected to the energy storage unit and a second node connected to the first switch unit;the trigger is configured to apply a target voltage to the lamp with the electric energy from the energy storage unit to ionize a gas in the lamp; andthe lamp is configured to trigger the pulse light with the electric energy from the energy storage unit.5.The control circuit of claim 3 or 4, wherein the energy storage unit comprises at least a first capacitor having a first terminal connected to the second power supply branch and a second terminal connected to the first node.6.The control circuit of claim 4 or 5, wherein the lamp comprises at least one xenon lamp.7.The control circuit of any one of claims 3-6, wherein the first switch unit comprises a switch transistor; andthe switch transistor has a control terminal connected to the control unit, a first potential terminal connected to the light-emitting unit, and a second potential terminal connected to the ground.8.The control circuit of any one of claims 1-7, wherein the control unit comprises a master unit, a DC voltage conversion unit, and a drive unit,wherein the master unit is connected to each of the DC voltage conversion unit and the drive unit, and configured to output a drive control signal to the drive unit and output a first control signal to the DC voltage conversion unit;the DC voltage conversion unit is connected to the first power supply branch, and configured to convert the first operation power based on the first control signal to output the first DC power; andthe drive unit is connected to the pulse light trigger unit and configured to output the drive signal according to the drive control signal.9.The control circuit of any one of claims 1-7, wherein the control unit comprises a master unit, a second switch unit, and a drive unit,wherein the master unit is connected to each of the second switch unit and the drive unit, and configured to output a drive control signal to the drive unit and output a first control signal to the second switch unit;the second switch unit is connected to the first power supply branch and the near-infrared light trigger unit, and configured to turn on a path between the first power supply branch and the near-infrared light trigger unit based on the first control signal; andthe drive unit is connected to the pulse light trigger unit and configured to output the drive signal according to the drive control signal.10.The control circuit of any one of claims 1 to 9, wherein the near-infrared light trigger unit comprises at least one halogen lamp or at least one xenon lamp.11.The control circuit of any one of claims 1 to 10, wherein the drive signal includes a sine wave electrical signal with adjustable interval between a peak and a valley thereof.12.A portable beauty instrument, comprising a housing and the control circuit of any one of claims 1-11, wherein the control circuit is mounted on the housing.
Citation Information
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