Intensive pulsed light painless hair removal instrument

Abstract

The utility model discloses an intense pulsed light painless hair removal instrument, which comprises a casing, a PCB (printed circuit board) and a pulse power supply unit are arranged in the casing, a light emitting unit is arranged at the front end of the casing, the PCB comprises a controller, an amplifier U5, a power tube Q7 and a transformer T1, the output end voltage of the pulse power supply unit is loaded to the input end of the transformer T1, and the output end voltage of the power tube Q7 is loaded to the output end of the transformer T1. The output end of the transformer T1 is connected to the light emitting unit, the drain electrode of the power tube Q7 is connected to the cathode of the diode D13, the anode of the diode D13 is connected to a circuit between the output end of the pulse power supply unit and the input end of the transformer T1, the source electrode of the power tube Q7 is grounded, and the source electrode of the power tube Q7 is grounded. The grid electrode of the power tube Q7 is connected to the output end of the amplifier U5 through a resistor R61, and a control signal output by the controller is transmitted to the input end of the amplifier U5. According to the utility model, one-time intense pulse light energy can be decomposed into multiple low-energy rapid flashes, so that painless hair removal is realized.

Description

Technical Field

[0001] The utility model relates to a hair removal device, in particular to an intense pulse light painless hair removal device. Background Art

[0002] A hair removal device is a device that uses instantaneous intense pulsed light to remove hair. The basic principle of the intense pulsed light therapy device currently on the market is to use a controller to drive the light-emitting unit to emit an intense pulse of light. The energy of the intense pulsed light is generally between 4 joules and 25 joules. In order to avoid skin pain, a cold compress is generally used to cool the skin, thereby reducing the pain during hair removal and preventing skin burns. However, since the intense pulsed light still has a large amount of energy, it is inevitable that skin pain or even burns will occur at certain times, and safety and reliability cannot be guaranteed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a hair removal device which can decompose a strong pulse light into multiple low-energy rapid flashes, thereby realizing painless hair removal, in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.

[0005] An intense pulsed light painless hair removal device comprises a housing, wherein a PCB board and a pulse power supply unit are arranged in the housing, a light-emitting unit is arranged at the front end of the housing, the PCB board comprises a controller, an amplifier U5, a power tube Q7 and a transformer T1, the output voltage of the pulse power supply unit is loaded on the input end of the transformer T1, the output end of the transformer T1 is connected to the light-emitting unit, the drain of the power tube Q7 is connected to the cathode of a diode D13, the anode of the diode D13 is connected to the line between the output end of the pulse power supply unit and the input end of the transformer T1, the source of the power tube Q7 is grounded, the gate of the power tube Q7 is connected to the output end of the amplifier U5 through a resistor R61, and the control signal output by the controller is transmitted to the input end of the amplifier U5.

[0006] Preferably, a resistor R35 and an inductor L5 connected in series are connected between the output end of the controller and the input end of the amplifier U5.

[0007] Preferably, the input terminal of the amplifier U5 is grounded via a resistor R28 and a capacitor C41 connected in parallel.

[0008] Preferably, the gate of the power tube Q7 is grounded via a resistor R33 and a capacitor C8 connected in parallel.

[0009] Preferably, a resistor R17, a resistor R18 and a capacitor C2 connected in series are connected between the output end of the pulse power supply unit and the input end of the transformer T1.

[0010] Preferably, a photosensitive plate is provided at the front end of the housing, an LED lamp and a color mark sensor U13 are provided on the photosensitive plate, the cathode of the LED lamp is grounded, the anode of the LED lamp is connected to the controller through a current limiting resistor, and the output end of the color mark sensor U13 is connected to the controller.

[0011] In the intense pulsed light painless hair removal device disclosed by the utility model, a PCB board and a pulse power supply unit are arranged in the casing, and the pulse power supply unit is used to provide a preset high-voltage electric energy to the transformer T1, which is then converted into a corresponding instantaneous voltage by the transformer T1. When working, the controller transmits the flash frequency signal to the amplifier U5, and the amplifier U5 amplifies the flash frequency signal and drives the power tube Q7 to generate a switching action. When the power tube Q7 is turned on, the end connecting C2 and D13 is pulled to a low potential. One end of C2 connected to T1 becomes a high potential to charge the 1-3 end coil of T1, and the voltage of the 2-3 end rises to a high voltage of about 10KV (the voltage will be adjusted according to the actual flash light triggering requirements) to meet the triggering voltage requirements of the lamp tube. When the power tube Q7 is turned off, one end of C2 connected to D13 is pulled to a high potential, and one end of C2 connected to T1 becomes a low potential to charge C2. This cycle is repeated, and the light-emitting unit is driven to emit multiple low-energy fast flash signals, thereby achieving painless hair removal and greatly improving the comfort and safety of hair removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of a hair removal device;

[0013] Figure 2 This is the internal structure diagram of the hair removal device;

[0014] Figure 3 This is the schematic diagram of the pulse control circuit of the hair removal device;

[0015] Figure 4 This is the schematic diagram of the skin color sensing circuit of the hair removal device. DETAILED DESCRIPTION

[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0017] The utility model discloses an intense pulsed light painless hair removal device, combined with Figures 1 to 4As shown, it includes a housing 1, a PCB board 2 and a pulse power supply unit are arranged in the housing 1, a light-emitting unit 3 is arranged at the front end of the housing 1, the PCB board 2 includes a controller, an amplifier U5, a power tube Q7 and a transformer T1, the output voltage of the pulse power supply unit is loaded on the input end of the transformer T1, the output end of the transformer T1 is connected to the light-emitting unit 3, the drain of the power tube Q7 is connected to the cathode of the diode D13, the anode of the diode D13 is connected to the line between the output end of the pulse power supply unit and the input end of the transformer T1, the source of the power tube Q7 is grounded, the gate of the power tube Q7 is connected to the output end of the amplifier U5 through a resistor R61, and the control signal output by the controller is transmitted to the input end of the amplifier U5.

[0018] In the above structure, the housing 1 is provided with a PCB board 2 and a pulse power supply unit, and the pulse power supply unit is used to provide 400V (this voltage is an example, and it will be flexibly adjusted according to the light energy demand in actual application) high-voltage electric energy to the transformer T1, and then the transformer T1 converts it into 10KV (this voltage is an example, and it will be flexibly adjusted according to the flash trigger demand in actual application) instantaneous voltage. During specific operation, the controller transmits the flash frequency signal to the amplifier U5, and the amplifier U5 amplifies the flash frequency signal and drives the power tube Q7 to generate a switching action. When the power tube Q7 is turned on The end connected to C2 and D13 is pulled to a low potential, and the end connected to C2 and T1 becomes a high potential to charge the 1-3 end coil of T1. The voltage at the 1-2 end rises to a high voltage of about 10KV (this voltage is an example, and it will be flexibly adjusted according to the flash triggering requirements in actual applications) to meet the triggering voltage requirements of the lamp tube. When the power tube Q7 is turned off, the end connected to C2 and D13 is pulled to a high potential, and the end connected to C2 and T1 becomes a low potential to charge C2. This cycle is repeated to drive the light-emitting unit 3 to emit multiple low-energy fast flash signals, thereby achieving painless hair removal and greatly improving the comfort and safety of hair removal.

[0019] Furthermore, a resistor R35 and an inductor L5 are connected in series between the output end of the controller and the input end of the amplifier U5. On this basis, the input end of the amplifier U5 is grounded through a resistor R28 and a capacitor C41 connected in parallel. The resistor R28 and the capacitor C41 mainly play a filtering role. Similarly, the gate of the power tube Q7 is grounded through a resistor R33 and a capacitor C8 connected in parallel.

[0020] As a preferred embodiment, a resistor R17, a resistor R18 and a capacitor C2 connected in series are connected between the output end of the pulse power supply unit and the input end of the transformer T1.

[0021] In the above circuit, this embodiment decomposes a high-energy flash into multiple low-energy rapid flashes. For example, the flash energy of a traditional hair removal device is X joules. This embodiment decomposes it into N rapid flashes, and the energy of each flash is X / N joules. The pain is also reduced to 1 / N of the traditional one, achieving the effect of painless hair removal. Compared with the 4 joule to 25 joule hair removal devices in the prior art, the hair removal device in this embodiment can be decomposed to a minimum of about 0.1 joule, and multiple rapid flashes are performed at the same part to obtain the target light power by energy superposition, thereby achieving the purpose of painless hair removal.

[0022] Traditional hair removal devices are generally suitable for brown and lighter skin, and are prone to cause burns and pain when used. This discomfort is not suitable for dark brown and darker skin. In contrast, the hair removal device in this embodiment decomposes a high-energy flash into multiple low-energy rapid flashes, which can avoid burns and pain. It is applicable to a wider range of skin colors, and is applicable to skin colors lighter than hair colors, meeting the hair removal needs of people with darker skin.

[0023] On this basis, in order to realize skin color detection, in this embodiment, a photosensitive plate 4 is provided at the front end of the housing 1, and an LED lamp 40 and a color mark sensor U13 are provided on the photosensitive plate 4. The cathode of the LED lamp 40 is grounded, and the anode of the LED lamp 40 is connected to the controller through a current limiting resistor. The output end of the color mark sensor U13 is connected to the controller. When in use, the light outlet of the hair removal device is placed close to the skin, and the LED lamp illuminates the skin. After the color mark sensor reads the skin color, it sends corresponding information (frequency) to the controller. The controller controls the luminous intensity of the light unit lamp tube according to the read information, and then adjusts the light output power. When it is specifically implemented, each time the light outlet moves, the color mark sensor re-reads the skin color and adjusts the output light power in real time, so as to achieve the best hair removal effect while protecting the user's skin.

[0024] On this basis, the utility model also proposes a control method for an intense pulsed light painless hair removal device, the hair removal device includes a housing 1, the housing 1 is provided with the PCB board 2 and the pulse power supply unit, the front end of the housing 1 is provided with a light-emitting unit 3, the PCB board 2 includes a controller, an amplifier U5, a power tube Q7 and a transformer T1, the output voltage of the pulse power supply unit is loaded on the input end of the transformer T1, the output end of the transformer T1 is connected to the light-emitting unit 3, the drain of the power tube Q7 is connected to the cathode of the diode D13, the anode of the diode D13 is connected to the line between the output end of the pulse power supply unit and the input end of the transformer T1, the source of the power tube Q7 is grounded, the gate of the power tube Q7 is connected to the output end of the amplifier U5 through a resistor R61, the control signal output by the controller is transmitted to the input end of the amplifier U5, the output end of the pulse power supply unit and the input end of the transformer T1 are connected with resistors R17, R18 and capacitor C2 connected in series in sequence, the control method includes:

[0025] The controller transmits the flash frequency signal to the amplifier U5, and the amplifier U5 amplifies the flash frequency signal and drives the power tube Q7 to generate a switching action. When the power tube Q7 is turned on, the output voltage of the transformer T1 is increased to the trigger voltage of the light-emitting unit 3. When the power tube Q7 is turned off, the capacitor C2 is charged. The above actions are repeated to drive the light-emitting unit 3 to emit multiple low-energy fast flash signals.

[0026] Specifically, when the controller transmits the flash frequency signal to the amplifier U5, the amplifier U5 amplifies the flash frequency signal and drives the power tube Q7 to generate a switching action. When the power tube Q7 pulls the end connecting C2 and D13 to a low potential, the end connecting C2 and T1 becomes a high potential to charge the 1-3 end coil of T1, and the voltage at the 1-2 end rises to a high voltage of about 10KV (this voltage is an example, and it will be flexibly adjusted according to the flash lamp triggering requirements in actual applications) to meet the triggering voltage requirements of the lamp tube; when the power tube Q7 is turned off, the end connecting C2 and D13 is pulled to a high potential, and the end connecting C2 and T1 becomes a low potential to charge C2, and this cycle is repeated, thereby driving the light-emitting unit 3 to emit multiple low-energy fast flash signals.

[0027] In the preferred embodiment of the utility model, the circuit components of the hair removal device include: control circuit, boost circuit, charge and discharge capacitor, voltage sampling circuit, voltage doubling circuit, high voltage trigger circuit, flash lamp, temperature detection circuit, fan drive detection circuit, refrigeration circuit, button, skin sensing circuit, sound drive circuit, skin color recognition circuit. The product is powered on and the power button is pressed to start working. The power storage circuit is charged, the skin sensor detects the skin, and the flash button is triggered to emit a flash. The flash can penetrate the epidermis to the dermis and selectively act on the hair shaft and hair follicle melanocytes. The hair follicle cells in the growth stage have the most melanin and are extremely sensitive to photons. The hair follicles are damaged after absorbing energy, causing the entire hair to fall off.

[0028] Compared with the existing technology, the utility model can ensure the hair removal effect and skin protection function. The lamp head is placed in the same position without moving, and the flashing stops after 8 seconds (the 8 seconds time can be adjusted according to different light powers and detected different skin colors), prompting that the next area should be treated, avoiding too few flashes at the same position to achieve the hair removal effect, and long-term flashing to cause damage to the skin.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intense pulsed light painless hair removal device, characterized in that: The invention comprises a housing (1), wherein a PCB board (2) and a pulse power supply unit are arranged in the housing (1), a light-emitting unit (3) is arranged at the front end of the housing (1), the PCB board (2) comprises a controller, an amplifier U5, a power tube Q7 and a transformer T1, the output voltage of the pulse power supply unit is loaded on the input end of the transformer T1, the output end of the transformer T1 is connected to the light-emitting unit (3), the drain of the power tube Q7 is connected to the cathode of a diode D13, the anode of the diode D13 is connected to the line between the output end of the pulse power supply unit and the input end of the transformer T1, the source of the power tube Q7 is grounded, the gate of the power tube Q7 is connected to the output end of the amplifier U5 via a resistor R61, and the control signal output by the controller is transmitted to the input end of the amplifier U5.

2. The intense pulsed light painless hair removal device as claimed in claim 1, characterized in that: A resistor R35 and an inductor L5 connected in series are connected between the output end of the controller and the input end of the amplifier U5.

3. The intense pulsed light painless hair removal device as claimed in claim 1, characterized in that: The input terminal of the amplifier U5 is grounded via a resistor R28 and a capacitor C41 connected in parallel.

4. The intense pulsed light painless hair removal device as claimed in claim 1, characterized in that: The gate of the power tube Q7 is grounded via a resistor R33 and a capacitor C8 connected in parallel.

5. The intense pulsed light painless hair removal device as claimed in claim 1, characterized in that: A resistor R17, a resistor R18 and a capacitor C2 which are connected in series in sequence are connected between the output end of the pulse power supply unit and the input end of the transformer T1.

6. The intense pulsed light painless hair removal device as claimed in claim 1, characterized in that: A photosensitive plate (4) is provided at the front end of the housing (1), an LED lamp (40) and a color mark sensor U13 are provided on the photosensitive plate (4), a cathode of the LED lamp (40) is grounded, an anode of the LED lamp (40) is connected to the controller via a current limiting resistor, and an output end of the color mark sensor U13 is connected to the controller.

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