CN202366333U - A kind of LED growth film - Google Patents

Abstract

The utility model discloses a LED adds membranes of sending out belongs to head nursing technical field, and its structure includes the membrane body of sending out, and the membrane body of sending out is including the built-in luminous membrane that has LED light-emitting component to and can dismantle the membrane of lighting that overlaps on the luminous membrane, and the membrane of lighting that lighting is for keeping apart impurity's light-permeable film, and LED light-emitting component includes red light LED lamp and blue light LED lamp, and the crisscross setting of ruddiness LED lamp and blue light LED lamp, this body coupling of sending out membranes is with controlling means. Compared with the prior art, the utility model discloses simple structure will send the membrane body to place overhead, and ruddiness LED lamp and blue light LED lamp send specific wavelength's light, can massage and amazing scalp, and the activation hair follicle promotes hair growth. The hair mask body is powered and controlled through an external control device, is safe to use, and can be used independently and simultaneously with other hair generation products.

Description

A kind of LED growth film

technical field

The utility model relates to the technical field of head care, in particular to an LED hair increasing film.

Background technique

Hair tonic has long been one of the favorite hair growth products for bald friends. With the development of technology, people are no longer limited to using general drug hair tonic to promote hair growth. Using different wavelengths of light to irradiate the scalp to achieve the effect of treatment and promote hair growth has become one of the major achievements of medical technology in recent years.

In the prior art, the Chinese invention patent application number 200710052396 discloses a "laser hair loss prevention comb", which consists of comb teeth, semiconductor lasers, laser speed expanders, red LEDs, blue LEDs, motors, circuit control units, Composed of power supply, switch, comb surface and shell, semiconductor laser, red light LED, blue light LED and overcurrent protection circuit are installed on the circuit control unit; A laser beam expander and a comb are installed; the red LEDs are symmetrically arranged on both sides of the semiconductor laser, and the blue LEDs are symmetrically arranged at both ends of the comb surface. The technical solution has the characteristics of being convenient to carry, but because the control circuit unit is arranged on the comb, there is a potential safety hazard during use by the user. the

Generally, phototherapy institutions use large-scale phototherapy machines for phototherapy hair growth, but this kind of equipment is expensive and bulky, and ordinary people have no purchasing power and are inconvenient for daily hair growth care; in addition, some phototherapy products only have phototherapy effects, and the nursing effect is relatively simple. Can not meet multiple nursing needs at the same time.

Contents of the invention

In order to solve the above problems, the utility model provides an LED hair increasing film with simple structure, safe use, which can be used alone or together with other care products.

An LED hair growth film, comprising a hair film body, the hair film body includes a light emitting film with a built-in LED light emitting component, and a light uniform film that is detachably overlapped on the light emitting film, and the LED light emitting component includes a red light LED The lamp and the blue LED lamp, the red LED lamp and the blue LED lamp are alternately arranged, and the hair mask body is connected with a control device.

Preferably, the hair mask body is set as a soft spherical hair mask body, and the light uniform film is a light-permeable film that isolates impurities.

In another preferred embodiment, the luminescent film includes a luminous film on the head, a luminous film on the upper left forehead, and a luminous film on the upper right forehead, and the luminous film on the top of the head, the luminous film on the upper left forehead, and the luminous film on the upper right forehead are integrally formed.

In another preferred embodiment, the control device includes a power cord and a USB interface control device, one end of the power cord is connected to the LED lighting assembly, and the other end of the power cord is connected to one end of the USB interface control device , the other end of the USB interface control device is connected to the power supply.

More preferably, the USB interface control device is provided with an upper case, a lower case, a circuit board and a fixing buckle, the upper case and the lower case form a storage space, the circuit board is arranged in the storage space, and the The fixing buckle is arranged on the lower shell.

Further, the circuit board includes a voltage input circuit unit, an insurance circuit unit, a switch circuit unit, a control switch circuit unit, a timing control circuit unit, a low voltage detection circuit unit, an input filter circuit unit, a boost control circuit unit, a boost circuit unit, indicating circuit unit, current limiting circuit unit, open circuit protection circuit unit, constant current circuit unit, output filter circuit unit and load circuit unit;

The first output end of the voltage input circuit unit is connected to the input end of the insurance circuit unit, and the output end of the insurance circuit unit is respectively connected to the control input end of the control switch circuit unit and the timing control circuit unit. The power supply terminal is connected, and the control output terminal of the control switch circuit unit is connected to the filter input terminal of the input filter circuit unit;

The filter output terminal of the input filter circuit unit is connected to the boost control input terminal of the boost control circuit unit, and the boost control output first terminal of the boost control circuit unit is connected to the boost control input terminal of the boost control circuit unit. connected to the first terminal of the voltage input, the second terminal of the boost control output of the boost control circuit unit is connected to the current limiting input terminal of the current limiting circuit unit, and the current limiting output terminal of the current limiting circuit unit is connected to the current limiting output terminal of the current limiting circuit unit. The second end of the boost input of the boost circuit unit is connected;

The boost output first terminal of the boost circuit unit is connected to the input terminal of the open circuit protection circuit, the output terminal of the open circuit protection circuit is connected to the constant current input terminal of the constant current circuit unit, and the constant current The constant current output end of the circuit unit is connected to the filter first input end of the output filter circuit unit, and the boost output second end of the boost circuit is connected to the filter second input end of the output filter circuit unit, so The output end of the output filter circuit unit is connected to the load circuit unit;

The second output terminal of the voltage input circuit unit is connected to the switch input terminal of the switch circuit unit, the switch output terminal of the switch circuit unit is connected to the switch control terminal of the timing control circuit unit, and the timing control circuit The voltage output terminal of the unit is connected to the comparison terminal of the low-voltage detection circuit unit, and the voltage output terminal of the low-voltage detection circuit unit is connected to the voltage receiving terminal of the timing control circuit unit;

The voltage output terminal of the timing control circuit unit is connected with the input terminal of the indication circuit unit.

In another preferred embodiment, the input voltage range of the USB interface control device is 4.5 to 5.5 volts, and the input current range of the USB interface control device is 500 to 1000 mA.

In another preferred embodiment, the control device includes a power cord and a battery control device, one end of the power cord is connected to the LED lighting assembly, and the other end of the power cord is provided with a plug that matches the universal interface of the battery control device , the hair mask body is detachably connected to the battery control device through a power cord.

More preferably, the battery control device includes a housing, a battery installation hole placed in the housing, a control panel, and a universal interface installed on the control panel, the battery installation hole is electrically connected to the control panel; the control panel includes Battery voltage input circuit, low voltage detection circuit, no power display circuit, filter circuit, boost circuit, LED additional film load circuit, current limiting feedback circuit and PWM signal frequency generation circuit;

The input end of the battery voltage input circuit is connected to the battery in the battery control device, and the output end of the battery voltage input circuit is respectively connected to the low voltage detection circuit and the filter circuit;

The output end of the low-voltage detection circuit is connected to the no-power display circuit;

The input end of the boost circuit includes a steady current input end, a current limiting signal feedback input end and a pulse width modulation signal input end, the smooth current input end is connected to the output end of the filter circuit, and the current limiting signal feedback input end terminal is connected to the output terminal of the current limiting feedback circuit, and the input terminal of the pulse width modulation signal is connected to the output terminal of the PWM signal frequency generating circuit;

The input end of the LED increasing film load circuit is connected to the output end of the boost circuit, and the output end of the LED increasing film load circuit is connected to the input end of the current limiting feedback circuit.

In another preferred embodiment, the red light wavelength of the red LED lamp is set to 650 to 670 nanometers, and the blue light wavelength of the blue LED light is set to 405 to 425 nanometers.

The beneficial effects of the utility model:

An LED hair-increasing film of the utility model includes a hair film body, the hair film body includes a light-emitting film with built-in LED light-emitting components, and a detachable and superimposed light-emitting film on the light-emitting film. The film and the LED light-emitting component include red LED lights and blue LED lights, the red LED lights and the blue LED lights are arranged alternately, and the hair film body is connected with a control device. Compared with the prior art, the utility model has a simple structure. The hair mask body is placed on the head, and the red LED light and the blue LED light emit light of a specific wavelength, which can massage and stimulate the scalp, activate hair follicles, and promote hair growth. Moreover, the hair mask body is powered and controlled by an external control device, which is safe to use and can be used alone or simultaneously with other hair growth products.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the content in the accompanying drawing does not constitute any restriction to the utility model.

FIG. 1 is a schematic structural view of an embodiment of an LED hair increasing film of the present invention.

FIG. 2 is a schematic block diagram of a circuit board of the USB interface control device in FIG. 1 .

Fig. 3 is a structural schematic diagram of another embodiment of an LED hair increasing film of the present invention.

FIG. 4 is a schematic diagram of the internal structure of the battery control device in FIG. 3 .

FIG. 5 is a schematic circuit diagram of a control panel of the battery control device in FIG. 3 .

The reference signs are explained as follows:

Luminous film 1, head luminous film 2, left upper forehead luminous film 3, right upper forehead luminous film 4;

Homogenizing film 5;

LED lighting components 6;

Power cord 7;

USB interface control device 8, upper shell 81, lower shell 82, fixed buckle 83, circuit board 84, control switch 85, voltage input circuit unit 841, insurance circuit unit 842, switch circuit unit 843, control switch circuit unit 844, timing control Circuit unit 845, low voltage detection circuit unit 846, input filter circuit unit 847, boost control circuit unit 848, boost circuit unit 849, indicating circuit unit 850, current limiting circuit unit 851, open circuit protection circuit unit 852, constant current circuit unit 853, load circuit unit 854, output filter circuit unit 855;

Battery control device 9, shell 91, battery installation hole 92, control panel 93, universal interface 94, switch mechanism 95, battery voltage input circuit 931, low voltage detection circuit 932, no power display circuit 933, filter circuit 934, boost circuit 935 , LED additional film load circuit 936 , current limiting feedback circuit 937 , PWM signal frequency generating circuit 938 .

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Example 1.

Referring to Fig. 1 and Fig. 2, an LED hair increasing film includes a hair film body, and the hair film body includes a light emitting film 1 with a built-in LED light emitting component 6, and a light uniform film 5 detachably overlapped on the light emitting film 1, and the LED emits light. Component 6 includes red LED lamps and blue LED lamps, the red LED lamps and blue LED lamps are alternately arranged, and the hair mask body is connected with a control device.

This embodiment only includes a hair mask and an external control device. The structure is simple. The hair mask body is placed on the head, and the red LED light and the blue LED light emit light of a specific wavelength, which can massage and stimulate the scalp and activate the hair follicles. Promotes hair growth. The hair mask body is powered and controlled by an external control device. It is safe to use and can be used alone or together with other hair growth products. If combined with hair growth drugs and proper massage, it can promote blood circulation in the head and improve hair. The growth environment promotes the scalp to absorb oxygen and beneficial energy, and the hair growth effect is remarkable.

The hair mask body is set as a soft spherical hair mask body, and the light uniform film 5 is a light-permeable film for isolating impurities. The hair mask body is set as a soft spherical body, which can facilitate the hair mask body to fit on the head and forehead, so that the light of the LED light-emitting component can more comprehensively illuminate the entire head and forehead.

The hair mask body includes head luminous film 2, left upper forehead luminous film 3 and right upper forehead luminous film 4, and the crown hair mask body, left upper forehead luminous film 3 and right upper forehead luminous film 4 are integrally formed. The head luminous film 2 is placed on the head to promote hair growth on the head. The left upper forehead luminous film 3 is placed on the left upper forehead to promote hair growth on the left upper forehead. The right upper forehead luminous film 4 is placed on the right upper forehead to promote the growth of the right upper forehead. hair growth.

The control device includes a power cord 7 and a USB interface control device 8, one end of the power cord 7 is connected to the LED lighting assembly 6, the other end of the power cord 7 is connected to one end of the USB interface control device 8, and the other end of the USB interface control device is connected to the power connection.

The USB interface control device 8 is provided with an upper case 81, a lower case 82, a circuit board 84 and a fixed buckle 83, the upper case 81 and the lower case 82 form a storage space, the circuit board 84 is arranged in the storage space, and the fixed buckle 83 is arranged in the lower case. shell82.

The circuit board 84 includes a voltage input circuit unit 841, an insurance circuit unit 842, a switch circuit unit 843, a control switch circuit unit 844, a timing control circuit unit 845, a low voltage detection circuit unit 846, an input filter circuit unit 847, and a boost control circuit unit 848 , boost circuit unit 849, indicating circuit unit 850, current limiting circuit unit 851, open circuit protection circuit unit 852, constant current circuit unit 853, output filter circuit unit 855 and load circuit unit 854;

The first output end of the voltage input circuit unit 841 is connected with the input end of the safety circuit unit 842, and the output end of the safety circuit unit 842 is respectively connected with the control input end of the control switch circuit unit 844 and the power supply end of the timing control circuit unit 845, and the control The control output end of the switch circuit unit 844 is connected to the filter input end of the input filter circuit unit 847;

The filter output terminal of the input filter circuit unit 847 is connected to the boost control input terminal of the boost control circuit unit 848, and the boost control output first terminal of the boost control circuit unit 848 is connected to the boost input terminal of the boost circuit unit 849. The second end of the boost control output of the boost control circuit unit 848 is connected to the current-limiting input of the current-limiting circuit unit 851, and the current-limiting output of the current-limiting circuit unit 851 is connected to the boost input of the boost circuit unit 849. the second end connection;

The boost output first terminal of the boost circuit unit 849 is connected to the input terminal of the open circuit protection circuit unit 852, the output terminal of the open circuit protection circuit unit 852 is connected to the constant current input terminal of the constant current circuit unit 853, and the constant current circuit unit 853 The constant current output terminal is connected to the first filter input terminal of the output filter circuit unit 855, the boost output second terminal of the boost circuit is connected to the filter second input terminal of the output filter circuit unit 855, and the output terminal of the output filter circuit unit 855 connected with the load circuit unit 854;

The second output terminal of the voltage input circuit unit 841 is connected with the switch input terminal of the switch circuit unit 843, the switch output terminal of the switch circuit unit 843 is connected with the switch control terminal of the timing control circuit unit 845, and the voltage output terminal of the timing control circuit unit 845 It is connected with the comparison terminal of the low-voltage detection circuit unit 846, and the voltage output terminal of the low-voltage detection circuit unit 846 is connected with the voltage receiving terminal of the timing control circuit unit 845;

The voltage output terminal of the timing control circuit unit 845 is connected to the input terminal of the indicating circuit unit 850 .

Using the USB control device, the hair film body of the LED hair extension film can be powered by a computer, USB mobile phone charger, USB power adapter, IPAD, IPHONE charger, PC, NOTEBOOK USB charger, etc., saving battery consumption and reducing Pollution, utilizing the versatility of the USB interface, can expand the application time and place of the user, such as: while using the computer, the computer can be used to supply power to a kind of LED hair growth film of the present embodiment, and hair growth or hair loss prevention care can be carried out.

The working principle of a kind of LED hair increasing film of this embodiment is as follows:

The control switch circuit unit 844 is set to a control switch 85, and the indicating circuit unit 850 is set to a red indicator light and a green indicator light, and the USB control device is connected to the hair mask body through the power cord 7 on the hair mask body. The power supply of the USB interface supplies power to the USB control device, press the control switch 85, the green indicator light is on, and the LED light-emitting assembly 6 on the hair mask body will continue to emit light for 10 minutes, and when the time is up, the USB control device controls the LED on the hair mask body The light-emitting component 6 automatically stops working; press the control switch 85 twice, the red indicator light is on, and the LED light-emitting component 6 on the hair mask body will continue to emit light for 20 minutes. When the time is up, the USB control device controls the LED light-emitting component 6 on the hair mask body Automatically stop working, the user can control the time of using the LED hair extension film according to the demand; press the control switch 85 three times, the red indicator light goes out, and the LED light-emitting assembly 6 on the control hair film body automatically stops working. If the external power supply is insufficient, when it is detected that the input voltage is lower than 4 volts, press the control switch 85, the red indicator light will go out after 30 flashes, and the LED light-emitting assembly 6 on the hair mask body will not work; press the control switch 85 twice, After the red indicator light flashes 30 times, it goes out, and the LED light-emitting assembly 6 on the hair mask body does not work; press the control switch 85 three times, and the red indicator light goes out after flashing 1 time, and the LED light-emitting assembly 6 on the hair mask body does not work.

When the LED light-emitting component 6 is working, it can massage and stimulate the scalp, activate the hair follicles, and promote hair growth through the interlaced irradiation of the red LED light and the blue LED light. Combined with hair growth drugs and proper massage, it can promote blood circulation in the head, improve the hair growth environment, promote the scalp to absorb oxygen and beneficial energy, and the hair growth effect is remarkable.

Example 2.

Referring to Fig. 3 to Fig. 5, a kind of LED hair increasing film, other structures of this embodiment are the same as Embodiment 1, the difference is that: the control device includes a power cord 7 and a battery control device 9, and one end of the power cord 7 is connected to the LED The light-emitting component 6 is connected, and the other end of the power cord 7 is provided with a plug that matches the universal interface 94 of the battery control device 9 , and the hair mask body and the battery control device 9 are detachably connected through the power cord 7 .

The battery control device 9 includes a casing 91, a battery mounting hole 92 and a control panel 93 placed in the casing 91, and a universal interface 94 installed on the control panel 93. The battery mounting hole 92 is electrically connected to the control panel 93; the control panel 93 includes Battery voltage input circuit 931, low voltage detection circuit 932, no power display circuit 933, filter circuit 934, boost circuit 935, LED additional film load circuit 936, current limiting feedback circuit 937 and PWM signal frequency generation circuit 938;

The input end of the battery voltage input circuit 931 is connected to the battery in the battery control device 9, and the output end of the battery voltage input circuit 931 is respectively connected to the low voltage detection circuit 932 and the filter circuit 934;

The output end of the low voltage detection circuit 932 is connected with the no power display circuit 933;

The input end of the boost circuit 935 includes a steady current input end, a current limiting signal feedback input end and a pulse width modulation signal input end, the steady current input end is connected to the output end of the filter circuit 934, the current limiting signal feedback input end is connected to the current limiting feedback circuit The output end of 937 is connected, and the input end of the pulse width modulation signal is connected with the output end of the PWM signal frequency generating circuit 938;

The input end of the LED increasing film load circuit 936 is connected to the output end of the boost circuit 935 , and the output end of the LED increasing film load circuit 936 is connected to the input end of the current limiting feedback circuit 937 .

Wherein, the signal frequency generated by the PWM signal frequency generating circuit 938 is 50HZ-120HZ. When the best hair growth prevention effect is achieved, the signal frequency generated by the PWM signal frequency generating circuit 938 is 60 Hz.

Wherein, the battery control device is provided with a switch mechanism 95 , and the switch mechanism 95 is connected with the control panel 93 .

The battery control device 9 of this embodiment has a low voltage detection circuit 932 and an empty display circuit 933, which ensures that the user can know the status of the battery in time; Use; the PWM signal frequency generation circuit 938 controls the LED light-emitting component 6 to emit light with a specific signal frequency, which further improves the effect of additional issuance.

Example 3.

An LED hair growth film, the other structure of this embodiment is the same as that of Embodiment 2, the difference is that the red wavelength of the red LED lamp is set to 650 to 670 nanometers, and the blue wavelength of the blue LED lamp is set to 405 to 425 nanometers .

In the actual use process, choosing the red light wavelength of the red LED lamp to be 660 nanometers and the blue light wavelength of the blue LED lamp to be 415 nanometers can achieve a better effect of additional issuance.

The input voltage range of the USB interface control device 8 is 4.5 to 5.5 volts, and the input current range of the USB interface control device 8 is 500 to 1000 mA.

Because the voltage range and current range accepted by the USB interface control device 8 are the same as those of most USB power supply devices, it is convenient for users to use different USB power supply devices to supply power to the USB interface control device 8, reducing limitation.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (10)

1. A LED hair-increasing film, comprising a hair film body, characterized in that: the hair film body includes a light-emitting film with a built-in LED light-emitting assembly, and a detachable light-homogeneous film that overlaps on the light-emitting film, and the LED The light-emitting component includes red LED lamps and blue LED lamps, the red LED lamps and the blue LED lamps are alternately arranged, and the hair mask body is connected with a control device. 2. A LED hair extension film according to claim 1, characterized in that: the hair film body is set as a soft spherical hair film body, and the light uniform film is a light-permeable film that isolates impurities. 3. A kind of LED hair increasing film according to claim 1, characterized in that: said luminous film comprises head luminous film, left upper forehead luminous film and right upper forehead luminous film, said head luminous film, said left upper forehead The luminous film is integrally formed with the upper right forehead luminous film. 4. A LED hair growth film according to claim 1, characterized in that: the control device includes a power cord and a USB interface control device, one end of the power cord is connected to the LED lighting assembly, and the power supply The other end of the line is connected to one end of the USB interface control device, and the other end of the USB interface control device is connected to a power supply. 5. A LED hair increasing film according to claim 4, characterized in that: the USB interface control device is provided with an upper case, a lower case, a circuit board and a fixing buckle, and the upper case and the lower case form a receiving space , the circuit board is arranged in the accommodating space, and the fixing buckle is arranged in the lower case. 6. A LED hair growth film according to claim 5, characterized in that: the circuit board includes a voltage input circuit unit, a safety circuit unit, a switch circuit unit, a control switch circuit unit, a timing control circuit unit, and a low-voltage detection circuit Unit, input filter circuit unit, boost control circuit unit, boost circuit unit, indicating circuit unit, current limiting circuit unit, open circuit protection circuit unit, constant current circuit unit, output filter circuit unit and load circuit unit; The first output end of the voltage input circuit unit is connected to the input end of the insurance circuit unit, and the output end of the insurance circuit unit is respectively connected to the control input end of the control switch circuit unit and the timing control circuit unit. The power supply terminal is connected, and the control output terminal of the control switch circuit unit is connected to the filter input terminal of the input filter circuit unit; The filter output terminal of the input filter circuit unit is connected to the boost control input terminal of the boost control circuit unit, and the boost control output first terminal of the boost control circuit unit is connected to the boost control input terminal of the boost control circuit unit. connected to the first terminal of the voltage input, the second terminal of the boost control output of the boost control circuit unit is connected to the current limiting input terminal of the current limiting circuit unit, and the current limiting output terminal of the current limiting circuit unit is connected to the current limiting output terminal of the current limiting circuit unit. The second terminal of the boost input of the boost circuit unit is connected; The boost output first terminal of the boost circuit unit is connected to the input terminal of the open circuit protection circuit, the output terminal of the open circuit protection circuit is connected to the constant current input terminal of the constant current circuit unit, and the constant current The constant current output end of the circuit unit is connected to the filter first input end of the output filter circuit unit, and the boost output second end of the boost circuit is connected to the filter second input end of the output filter circuit unit, so The output end of the output filter circuit unit is connected to the load circuit unit; The second output terminal of the voltage input circuit unit is connected to the switch input terminal of the switch circuit unit, the switch output terminal of the switch circuit unit is connected to the switch control terminal of the timing control circuit unit, and the timing control circuit The voltage output terminal of the unit is connected to the comparison terminal of the low-voltage detection circuit unit, and the voltage output terminal of the low-voltage detection circuit unit is connected to the voltage receiving terminal of the timing control circuit unit; The voltage output terminal of the timing control circuit unit is connected with the input terminal of the indication circuit unit. 7. A LED hair growth film according to claim 4, characterized in that: the input voltage range of the USB interface control device is 4.5 to 5.5 volts, and the input current range of the USB interface control device is 500 to 1000 milliseconds install. 8. A LED hair growth film according to claim 1, characterized in that: the control device includes a power cord and a battery control device, one end of the power cord is connected to the LED lighting assembly, and the other end of the power cord One end is provided with a plug matching the universal interface of the battery control device, and the hair mask body is detachably connected to the battery control device through a power cord. 9. A LED hair increasing film according to claim 7, characterized in that: the battery control device comprises a housing, a battery mounting hole placed in the housing, a control panel, and a universal interface installed on the control panel, the The battery installation hole is electrically connected to the control panel; the control panel includes a battery voltage input circuit, a low voltage detection circuit, an empty display circuit, a filter circuit, a boost circuit, an LED additional film load circuit, a current limiting feedback circuit and a PWM signal Frequency generating circuit; The input end of the battery voltage input circuit is connected to the battery in the battery control device, and the output end of the battery voltage input circuit is respectively connected to the low voltage detection circuit and the filter circuit; The output end of the low-voltage detection circuit is connected to the no-power display circuit; The input end of the boost circuit includes a steady current input end, a current limiting signal feedback input end and a pulse width modulation signal input end, the smooth current input end is connected to the output end of the filter circuit, and the current limiting signal feedback input end terminal is connected to the output terminal of the current limiting feedback circuit, and the input terminal of the pulse width modulation signal is connected to the output terminal of the PWM signal frequency generating circuit; The input end of the LED increasing film load circuit is connected to the output end of the boost circuit, and the output end of the LED increasing film load circuit is connected to the input end of the current limiting feedback circuit. 10. A LED hair growth film according to claim 1, characterized in that: the red light wavelength of the red LED light is set to 650 to 670 nanometers, and the blue light wavelength of the blue light LED light is set to 405 to 425 nanometers .

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