Laser hair drier integrated with photodynamic therapy

Abstract

The invention relates to the technical field of laser hair driers, and discloses a laser hair drier integrated with photodynamic therapy, which comprises an outer shell, an air outlet is arranged on the outer shell, and a battery, a semiconductor laser, an optical fiber, a heat dissipation block, a thermoelectric refrigeration sheet, a temperature sensor, a fan and a control panel are arranged in the outer shell. The input end of the optical fiber is in coupling connection with the semiconductor laser, the output end of the optical fiber faces the air outlet, the semiconductor laser is installed on the thermoelectric refrigeration sheet, and the thermoelectric refrigeration sheet is installed on the heat dissipation block; the temperature sensor is installed on the semiconductor laser, and airflow generated by the fan blows to the heat dissipation block and is exhausted from the air outlet. The control panel is electrically connected with the battery, the semiconductor laser, the thermoelectric refrigeration sheet, the temperature sensor and the fan; the invention has the advantages of convenience in use and carrying and capability of reducing the burden of a user.

Description

Technical Field

[0001] The invention relates to a laser hair dryer integrated with photodynamic therapy, belonging to the technical field of laser hair dryers. Background Art

[0002] With environmental changes, work pressure, life pressure and other factors, more and more young people are beginning to face the problem of hair loss. According to relevant statistics, the number of people with hair loss in my country has exceeded 250 million, of which 84% are under the age of 30. This "sudden baldness" phenomenon has brought considerable challenges to people's mental health and appearance. Therefore, it is crucial to find a safe and effective solution to deal with the problem of hair loss.

[0003] Laser technology has become a major invention of mankind since the 20th century. It has quickly attracted people's attention with its small size, convenient operation, high output and power. Semiconductor lasers have shown broad application prospects in the fields of medicine, display technology, military, industrial processing and scientific research. With the in-depth study of semiconductor lasers in the medical field, scientists have found that lasers of specific wavelengths can stimulate the photobiomodulation (PBM) effect. In this process, photons penetrate tissues and interact with the pigment C complex in mitochondria to increase oxidase activity and enhance mitochondrial function, thereby increasing oxygen consumption and promoting ATP synthesis. The synthesis of ATP can increase the metabolic activity of hair follicle cells and enhance the growth ability of hair follicles, thereby accelerating hair growth. At the same time, the irradiation of photons can also promote the expansion of scalp blood vessels and increase blood flow, which helps to provide more oxygen and nutrients to the hair follicles to support their healthy growth. In addition, the PBM effect can also reduce the generation of free radicals and reduce the damage of oxidative stress to hair follicle cells, thereby protecting the hair follicles from further damage.

[0004] Currently, laser therapy has been widely used as a non-drug treatment option for the treatment of hair loss. Common laser treatment equipment includes laser helmets, laser therapy devices, etc., but such equipment usually requires users to perform treatment at a fixed time every day or week, which increases the burden on users and cannot be integrated into their daily lives. At the same time, such equipment is usually large in size and not easy to carry, especially when users are on business trips or traveling. Summary of the invention

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a laser hair dryer with integrated photodynamic therapy, which can not only be integrated with the user's daily life so that the user does not need to use special time for treatment, but also has the characteristics of small size, which is convenient for users to carry and has high practical value.

[0006] The technical solution of the present invention is as follows: A laser hair dryer integrated with photodynamic therapy comprises an outer shell, an air outlet is arranged on the outer shell, and a A battery, used to provide working current; Semiconductor laser, used to emit laser light; The optical fiber is used to transmit the laser, the input end of which is coupled with the semiconductor laser and the output end of which is arranged toward the air outlet; A heat sink block, used for heat dissipation; Thermoelectric cooling sheet is used for heat transfer and temperature control. The semiconductor laser is mounted on the thermoelectric cooling sheet, and the thermoelectric cooling sheet is mounted on the heat sink; A temperature sensor, used for detecting temperature, is mounted on the semiconductor laser; A fan is used to generate airflow, and the airflow generated by the fan is blown toward the heat sink and discharged from the air outlet; The control board is used to perform corresponding action control according to its own preset program. The control board is electrically connected with the battery, semiconductor laser, thermoelectric cooling sheet, temperature sensor and fan respectively.

[0007] Furthermore, the optical fiber is a one-to-many structure, and the output ends of the multiple optical fibers are all connected to the inner wall of the air outlet and are distributed in a ring array on the inner wall of the air outlet.

[0008] Furthermore, the optical fiber is a single structure, and the output end of the single optical fiber is fixedly installed at the center of the air outlet by setting a bracket.

[0009] Furthermore, a lens is arranged on the output end of the optical fiber, and an anti-reflection film is coated on the lens.

[0010] Furthermore, the lens is one of a flat lens, a plano-convex lens, a bi-convex lens, a plano-concave lens and a bi-concave lens.

[0011] Furthermore, the laser wavelength emitted by the semiconductor laser emitter is 400-470nm and 600-700nm.

[0012] Furthermore, a switch and a USB charging port are also provided on the outer shell, the switch is electrically connected to the control board, and the USB charging port is electrically connected to the battery.

[0013] Furthermore, a micro pump and a heat pipe are provided inside the heat sink block, the micro pump is electrically connected to the control board, the heat pipe is filled with a heat conducting medium, the heat pipe is arranged in a serpentine shape inside the heat sink block, and the head and tail ends are respectively connected to the liquid inlet and liquid outlet of the micro pump, and the heat sink block is also provided with a plurality of heat dissipation holes that penetrate the heat sink block, the arrangement direction of the heat dissipation holes is adapted to the airflow direction generated by the fan, and there is no interference between the heat sink block and the heat pipe.

[0014] Furthermore, a connecting pipe is provided on the heat dissipation block, one end of the connecting pipe is connected to the heat conducting pipe, and the other end is extended out of the outer shell, and a sealing cover is provided on the end of the connecting pipe extended out of the outer shell.

[0015] Furthermore, a base plate is provided at the bottom of the heat dissipation block, an air outlet space is provided between the base plate and the heat dissipation block, the airflow generated by the fan passes through the air outlet space, a plurality of heat dissipation teeth are provided in the air outlet space, the heat dissipation teeth connect the heat dissipation block and the base plate together, and gaps are left between adjacent heat dissipation teeth.

[0016] The present invention has the following beneficial effects: The present invention proposes a laser hair dryer with integrated photodynamic therapy. By arranging structures such as a semiconductor laser, an optical fiber, a heat sink, a thermoelectric cooling sheet, a temperature sensor, and a fan, the laser emitted by the semiconductor laser can be emitted outward from the air outlet of the outer shell to perform corresponding laser therapy. At the same time, the heat generated by the operation of the semiconductor laser will be transferred to the heat sink by the thermoelectric cooling sheet. After the fan starts working, the heat on the heat sink can be blown out from the air outlet to form hot air for users to use. In this way, the treatment can be combined with the user's daily life, so that the user can complete the corresponding treatment in the process of daily hair blowing, which will not take up the user's time and reduce the user's burden. In addition, the structural design of the hair dryer is small in overall size, which can be convenient for users to carry during travel. Compared with the existing technology, it has the advantages of convenient use, reduced user burden, and convenient carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A schematic diagram of the structure of an optical fiber in the present invention; Figure 3 is another structural schematic diagram of the optical fiber in the present invention; Figure 4 It is a schematic diagram of the internal structure of the heat dissipation block in the present invention; Figure 5 It is a schematic diagram of the connection structure between the heat sink and the thermoelectric cooling sheet in the present invention; Figure 6 It is a schematic diagram of the partial structure inside the outer shell of the present invention; Figure 7 It is a side view of the heat sink in the present invention.

[0018] The reference numerals in the figure represent: 1. Shell; 2. Battery; 3. Semiconductor laser; 4. Optical fiber; 5. Heat sink; 6. Thermoelectric cooling sheet; 7. Temperature sensor; 8. Fan; 9. Control board; 10. Switch; 11. USB charging port; 12. Lens; 13. Air outlet; 14. Bracket; 15. Micro pump; 16. Heat pipe; 17. Heat dissipation hole; 18. Connecting pipe; 19. Sealing cover; 20. Bottom plate; 21. Air outlet space; 22. Heat dissipation teeth. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example: Please refer to Figures 1 to 7 The present embodiment provides a laser hair dryer integrated with photodynamic therapy, including a shell 1, which is arranged in an L-shaped structure. An air outlet 13 is arranged on one side end of the transverse section structure of the shell 1. Since it is a hair dryer structure, an air inlet should also be arranged on the shell 1. The opening position of the air inlet can be arranged according to actual conditions, such as being arranged on the other side end of the transverse section structure of the shell 1, or being arranged on one side end of the vertical section structure of the shell 1.

[0021] The housing 1 is provided with a battery 2 for providing working current, a semiconductor laser 3 for emitting laser light, an optical fiber 4 for transmitting laser light, a heat sink 5 for heat dissipation, a thermoelectric cooling sheet 6 for heat transfer and temperature control, a temperature sensor 7 for detecting temperature, a fan 8 for generating airflow, a control panel 9 for performing corresponding action control according to a preset program, a switch 10 for performing work control, and a USB charging port 11 for charging. Among them, the input end of the optical fiber 4 is coupled with the semiconductor laser 3, so that the laser light emitted by the semiconductor laser 3 can be transmitted through the optical fiber 4, and the output end of the optical fiber 4 is arranged toward the air outlet 13, so that the laser light transmitted through the optical fiber 4 will finally be emitted from the air outlet 13 to perform corresponding irradiation therapy. The semiconductor laser 3 is fixedly mounted on the thermoelectric cooling sheet 6, and the thermoelectric cooling sheet 6 is fixedly mounted on the heat sink 5; the fan 8 is arranged toward the heat sink 5 and the air outlet 13, so that the airflow generated by the fan 8 can be blown toward the heat sink 5 and then discharged from the air outlet 13. The control board 9 is electrically connected to the battery 2, the semiconductor laser 3, the thermoelectric cooling sheet 6, the temperature sensor 7 and the fan 8 respectively. The control board 9 can provide the semiconductor laser 3, the thermoelectric cooling sheet 6, the temperature sensor 7 and the fan 8 with the current required for operation through the electrical connection with the battery 2. The control board 9 can also control the working state of the semiconductor laser 3, the thermoelectric cooling sheet 6, the temperature sensor 7 and the fan 8. The switch 10 is electrically connected to the control board 9. The control board 9 can perform corresponding program control according to the on and off state of the switch 10. The USB charging port 11 is electrically connected to the battery 2. The USB charging port 11 is used to charge the battery 2.

[0022] Through the above-mentioned settings, when the laser hair dryer starts to work, the user turns on the work by using the switch 10, and the control board 9 performs corresponding program control according to the on and off state of the switch 10, specifically controlling the semiconductor laser 3, the thermoelectric cooling sheet 6, the temperature sensor 7 and the fan 8 to start working. The laser emitted by the semiconductor laser 3 is transmitted through the optical fiber 4 and emitted outward from the air outlet 13. At the same time, the heat generated by the operation of the semiconductor laser 3 will be transferred to the heat sink 5 by the thermoelectric cooling sheet 6. After the fan 8 starts working, the heat on the heat sink 5 can be blown out from the air outlet 13 to form hot air for the user to use. In this way, the treatment can be combined with the user's daily life, so that the user can complete the corresponding treatment in the process of daily hair blowing. The temperature sensor 7 detects the temperature of the semiconductor laser 3 in real time, and transmits the detected temperature value to the control board 9. The control board 9 compares the temperature value. When it is found that the temperature value is higher than the program threshold set by itself, the control board 9 can also control the thermoelectric cooling sheet 6 to improve its working efficiency to accelerate the transfer of heat to the semiconductor laser 3, thereby reducing the temperature of the semiconductor laser 3 and avoiding malfunction of the semiconductor laser 3 due to overheating.

[0023] In this embodiment, the temperature sensor 7 can be a common NTC, PT100, thermocouple, etc. The switch 10 can have different gears to correspond to different wind speeds and temperatures, etc., and can be set according to actual conditions. The USB charging port 11 can also be replaced with a common wire plug to directly connect 100-260V AC.

[0024] In this embodiment, the optical fiber 4 is a one-to-many structure, and the specific number of lines can be determined according to actual conditions. The output ends of the multiple optical fibers 4 are all connected to the inner wall of the air outlet 13, and are distributed in a circular array on the inner wall of the air outlet 13. The one-to-many structure of the optical fiber 4 can make the light output more uniform, cover a larger scalp area, and is suitable for the treatment of the entire scalp, which can improve the treatment efficiency.

[0025] In this embodiment, the optical fiber 4 is a single structure, and the output end of the single optical fiber 4 is fixedly installed at the center of the air outlet 13 by setting a bracket 14. The optical fiber 4 of the single structure has concentrated light output and high energy density, which is suitable for concentrated irradiation of specific areas such as local hair loss areas on the scalp, with more significant treatment effects and lower manufacturing costs.

[0026] In this embodiment, a lens 12 is provided at the output end of the optical fiber 4. The lens 12 is provided to protect the output end of the optical fiber 4 to prevent dust from entering the output end of the optical fiber 4. The lens 12 is coated with an anti-reflection film with a thickness of 400nm-700nm to reduce the attenuation during light transmission. The lens 12 is one of a flat mirror, a plano-convex mirror, a biconvex mirror, a plano-concave mirror and a biconcave mirror. When the lens 12 is a flat mirror, the lens 12 only plays a protective role. When the lens 12 is a plano-convex mirror or a biconvex mirror, it can collimate the light output by the optical fiber 4 into parallel light to enhance the irradiation intensity. When the lens 12 is a plano-concave mirror or a biconcave mirror, it can further diverge the light output by the optical fiber 4 to increase the irradiation area.

[0027] In this embodiment, the laser wavelengths emitted by the semiconductor laser emitter are 400-470nm and 600-700nm. The blue laser with a wavelength of 400-470nm has a killing effect on some anaerobic bacteria, such as Propionibacterium acnes that may cause folliculitis. It can also prevent scalp infection, repair sensitive scalp, increase the oxygen content of skin surface cells, and reduce hair loss. The red laser with a wavelength of 600-700nm can inhibit cyclooxygenase to inhibit inflammation, and can also promote blood circulation, generate fibroblasts, stimulate collagen regeneration, and reduce the formation of acne scars.

[0028] In order to enhance the heat dissipation effect of the heat dissipation block 5, in this embodiment, a micro pump 15 and a heat pipe 16 are arranged inside the heat dissipation block 5. The micro pump 15 is electrically connected to the control board 9, and the control board 9 can control the working state of the micro pump 15. The heat pipe 16 is filled with a heat conducting medium, which can be water or silicone oil. The heat pipe 16 is arranged in a serpentine shape in the heat dissipation block 5, and the head and tail ends are respectively connected to the liquid inlet and liquid outlet of the micro pump 15. The heat dissipation block 5 is also provided with a plurality of heat dissipation holes 17 that are arranged through the heat dissipation block 5. The arrangement direction of the heat dissipation holes 17 is adapted to the airflow direction generated by the fan 8, and there is no interference between the heat dissipation block 5 and the heat pipe 16. Through the above-mentioned settings, when the thermoelectric cooling sheet 6 transfers the heat generated by the semiconductor laser 3 to the heat sink 5, the control board 9 controls the micro pump 15 to start working, and the micro pump 15 allows the heat transfer medium to circulate continuously in the heat pipe 16 to quickly absorb the heat transferred to the heat sink 5 by the thermoelectric cooling sheet 6, thereby accelerating the heat transfer speed. The airflow generated by the fan 8 can take away the heat from the heat sink 5 and the heat pipe 16 through the heat dissipation holes 17. The heat dissipation holes 17 cooperate with the settings of the micro pump 15 and the heat pipe 16 to quickly heat up the airflow generated by the fan 8.

[0029] In this embodiment, a connecting pipe 18 is further provided on the heat dissipation block 5, one end of the connecting pipe 18 is connected to the heat conducting pipe 16, and the other end is extended out of the housing 1, and a sealing cap 19 is provided on the end of the connecting pipe 18 extending out of the housing 1. The provision of the connecting pipe 18 can facilitate the subsequent replacement of the heat conducting medium in the heat conducting pipe 16, and when the heat conducting medium needs to be replaced, the corresponding replacement work can be carried out by opening the sealing plug.

[0030] In this embodiment, a bottom plate 20 is provided at the bottom of the heat dissipation block 5, and an air outlet space 21 is provided between the bottom plate 20 and the heat dissipation block 5. The air outlet space 21 is provided so that the airflow generated by the fan 8 can pass through the blowing space. A plurality of heat dissipation teeth 22 are provided in the air outlet space 21. The specific number of the heat dissipation teeth 22 can be set according to actual conditions. The heat dissipation teeth 22 connect the heat dissipation block 5 and the bottom plate 20 together, and gaps are left between adjacent heat dissipation teeth 22. Through the above-mentioned setting, the heat on the heat dissipation block 5 can be transferred to the heat dissipation teeth 22. The heat dissipation teeth 22 can increase the heat dissipation area, thereby improving the heat dissipation rate, so as to play a role in quickly heating the airflow generated by the fan 8.

[0031] In this embodiment, the design of the heat dissipation teeth 22 is determined by the following method: Step 1: Determine the length, width and thickness of the heat sink 5 according to the space limitation of the housing 1.

[0032] Step 2: Preliminarily determine the height, width and thickness of the heat dissipation teeth 22 based on experience.

[0033] Step 3: Calculate the number of heat dissipation teeth 22 .

[0034] The number of heat dissipation teeth 22 is calculated according to the following formula:

[0035] In the formula, n represents the number of the heat dissipation teeth 22 , W represents the width of the heat dissipation block 5 , L represents the length of the heat dissipation block 5 , s represents the gap between adjacent heat dissipation teeth 22 , and w represents the width of the heat dissipation teeth 22 .

[0036] The gap between adjacent heat dissipation teeth 22 is calculated according to the following formula:

[0037] In the formula, s represents the gap between adjacent heat dissipation teeth 22 , k represents a constant, the value of k is greater than or equal to 1.5, and w represents the width of the heat dissipation tooth 22 .

[0038] Step 4: Calculate the total heat dissipation area of ​​the heat dissipation teeth 22 .

[0039] The total heat dissipation area of ​​the heat dissipation teeth 22 is calculated according to the following formula:

[0040] In the formula, A represents the total heat dissipation area of ​​the heat dissipation teeth 22 , n represents the number of the heat dissipation teeth 22 , h represents the height of the heat dissipation teeth 22 , l represents the length of the heat dissipation teeth 22 , and w represents the width of the heat dissipation teeth 22 .

[0041] Step 5: Calculate thermal resistance and air flow resistance, and evaluate whether the heat dissipation performance of the designed heat dissipation teeth 22 meets the requirements based on the calculated results. The evaluation method is to compare the actual factory requirements with the calculated results to complete the evaluation work.

[0042] Thermal resistance is calculated according to the following formula:

[0043] In the formula, R represents thermal resistance, c represents the convection heat transfer coefficient of the heat dissipation teeth 22 , which is 100 to 500, and A represents the total heat dissipation area of ​​the heat dissipation teeth 22 .

[0044] The air flow resistance is calculated according to the following formula:

[0045] In the formula, P represents air flow resistance, p represents air density, v represents air flow rate, which is determined according to the specific air flow rate generated by the fan 8, C represents the resistance coefficient, which is 1 to 3, n represents the number of heat dissipation teeth 22, h represents the height of the heat dissipation teeth 22, and s represents the spacing between adjacent heat dissipation teeth 22.

[0046] Step 6: According to the evaluation results, the size of the heat dissipation teeth 22 is adjusted accordingly, and steps 2 to 6 are repeated until it meets the requirements.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A laser hair dryer integrated with photodynamic therapy, comprising a housing (1), an air outlet (13) being arranged on the housing (1), characterized in that: The housing (1) is provided with a battery (2) for providing working current; a semiconductor laser (3) for emitting laser light; an optical fiber (4) for transmitting laser light, the input end of which is coupled to the semiconductor laser (3) and the output end of which is arranged toward the air outlet (13); a heat sink (5) for dissipating heat; a thermoelectric cooling sheet (6) for transferring heat and controlling temperature, the semiconductor laser (3) being mounted on the thermoelectric cooling sheet (6), and the thermoelectric cooling sheet (6) being mounted on the heat sink (5); a temperature sensor (7) for detecting temperature, which is mounted on the semiconductor laser (3); and a fan (8) for generating airflow, the airflow generated by the fan (8) being blown toward the heat sink (5) and discharged from the air outlet (13); The control board (9) is used to perform corresponding action control according to a preset program of the control board (9), and the control board (9) is electrically connected to the battery (2), the semiconductor laser (3), the thermoelectric cooling sheet (6), the temperature sensor (7), and the fan (8).

2. The laser hair dryer integrated with photodynamic therapy according to claim 1, characterized in that: The optical fiber (4) is a one-to-many structure, and the output ends of the multiple optical fibers (4) are all connected to the inner wall of the air outlet (13), and are distributed in a ring array on the inner wall of the air outlet (13).

3. The laser hair dryer integrated with photodynamic therapy according to claim 1, characterized in that: The optical fiber (4) is a single structure, and the output end of the single optical fiber (4) is fixedly installed at the center position of the air outlet (13) by arranging a bracket (14).

4. A laser hair dryer integrated with photodynamic therapy according to claim 2 or 3, characterized in that: A lens (12) is provided at the output end of the optical fiber (4), and the lens (12) is coated with an anti-reflection film.

5. The laser blower integrated with photodynamic therapy according to claim 4, characterized in that: The lens (12) is one of a flat lens, a plano-convex lens, a bi-convex lens, a plano-concave lens and a bi-concave lens.

6. The laser blower integrated with photodynamic therapy according to claim 1, characterized in that: The wavelength of the laser emitted by the semiconductor laser emitter is 400-470nm and 600-700nm.

7. The laser blower integrated with photodynamic therapy according to claim 1, characterized in that: The housing (1) is also provided with a switch (10) and a USB charging port (11); the switch (10) is electrically connected to the control panel (9), and the USB charging port (11) is electrically connected to the battery (2).

8. The laser hair dryer integrated with photodynamic therapy according to claim 1, characterized in that: The heat sink (5) is provided with a micro pump (15) and a heat conducting pipe (16). The micro pump (15) is electrically connected to the control board (9). The heat conducting pipe (16) is filled with a heat conducting medium. The heat conducting pipe (16) is arranged in a serpentine shape in the heat sink (5) and its head and tail ends are respectively connected to the liquid inlet and liquid outlet of the micro pump (15). The heat sink (5) is also provided with a plurality of heat dissipation holes (17) which are arranged to penetrate the heat sink (5). The arrangement direction of the heat dissipation holes (17) is adapted to the direction of the airflow generated by the fan (8). No interference occurs between the heat sink (5) and the heat conducting pipe (16).

9. The laser hair dryer integrated with photodynamic therapy according to claim 8, characterized in that: The heat sink (5) is also provided with a connecting pipe (18), one end of which is connected to the heat conducting pipe (16), and the other end of which is arranged to extend out of the outer shell (1), and a sealing cover (19) is provided on the end of the connecting pipe (18) extending out of the outer shell (1).

10. The laser hair dryer integrated with photodynamic therapy according to claim 8, characterized in that: A bottom plate (20) is provided at the bottom of the heat dissipation block (5); an air outlet space (21) is provided between the bottom plate (20) and the heat dissipation block (5); an airflow generated by the fan (8) passes through the air outlet space (21); a plurality of heat dissipation teeth (22) are provided in the air outlet space (21); the heat dissipation teeth (22) connect the heat dissipation block (5) and the bottom plate (20); and gaps are left between adjacent heat dissipation teeth (22).

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