Intelligent red light spectrum care instrument

Abstract

The application discloses an intelligent red light spectrum nursing instrument, which comprises a spectrum control instrument main body, a control unit arranged in the spectrum control instrument main body and a distance sensor arranged on the spectrum control instrument main body. The spectrum control instrument main body is in a flat plate shape, and an optical focusing window is arranged on the spectrum control instrument main body. An optical convex lens is arranged at the optical focusing window, and a red light LED lamp plate is arranged below the optical convex lens. The control unit is used for controlling the power of the red light LED lamp plate according to the distance between the spectrum control instrument main body and a user detected by the distance sensor, and controlling the light-emitting time length of the red light LED lamp plate according to a preset. The optical convex lens is used for focusing the light-emitting of the red light LED lamp plate. The light-emitting wavelength of the red light LED lamp plate is 650-850 nm. The nursing instrument can comprehensively guarantee the eye care function of the user from the aspects of western medicine, traditional Chinese medicine and eye use habits, can be suitable for users of different age groups, and realizes the miniaturization, convenience and multifunction of the red light spectrum nursing instrument.

Description

Technical Field

[0001] This invention belongs to the field of eye care and health technology, and relates to an intelligent red light spectrum care device. Background Technology

[0002] The principle behind intelligent red light spectrum analyzers is to stimulate the retina through specific red light flashing frequencies and intensities. This can improve the sensitivity and reaction speed of the visual system, enhance visual attention, improve retinal blood circulation, promote retinal cell metabolism and regeneration, and enhance the excitability and inhibition of the optic nerve. This, in turn, promotes the development and repair of the optic nerve, thereby improving the patient's vision. However, existing therapeutic devices or similar products often use eyepieces directly placed in front of the eyes to deliver red light irradiation. These are not only bulky and inconvenient to carry, but also typically have limited functionality. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an intelligent red light spectrum care device. This device concentrates the energy of the 650-850nm red light spectrum through a spectrum controller and adjusts the red light irradiation power according to the usage distance. Furthermore, by combining the structural design of a finger acupoint stimulation button, a precise distance controller, and an airbag-type body position calibrator, it can comprehensively protect the user's eye health from multiple perspectives, including Western medicine theory, traditional Chinese medicine theory, and eye habits. It is suitable for users of different ages and achieves miniaturization, convenience, and multifunctionality of the red light spectrum care device.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A smart red light spectrum therapy device includes a spectrum controller body, a control unit disposed within the spectrum controller body, and a distance sensor disposed on the spectrum controller body. The spectrum controller body is flat and has an optical focusing window. An optical convex lens is disposed at the optical focusing window, and a red light LED light panel is disposed below the optical convex lens. The red light LED light panel and the distance sensor are electrically connected to the control unit. The control unit is used to control the power of the red light LED light panel according to the distance between the spectrum controller body and the user detected by the distance sensor, and to control the emission duration of the red light LED light panel according to a preset value. The optical convex lens is used to focus the emission of the red light LED light panel, and the emission wavelength of the red light LED light panel is in the range of 650-850nm.

[0006] In the above technical solution, the focal length of the optical convex lens is 6.5cm, and the optical convex lens can also be replaced by a Fresnel lens.

[0007] Furthermore, the main body of the spectrum controller is also equipped with several groups of green LED beads, which are electrically connected to the control unit and are controlled by the control unit to light up intermittently after the red LED light panel is turned off.

[0008] Furthermore, the nursing device also includes a finger acupoint stimulation buckle, which includes a housing and connecting wires. The housing is provided with a conductive rubber electrode, a red LED, and a PTC heating resistor. The red LED, the PTC heating resistor, and the conductive rubber electrode are all electrically connected to the connecting wires. The main body of the spectrum controller is provided with a socket for electrical connection to the control unit. The connecting wires connect the red LED, the PTC heating resistor, and the conductive rubber electrode to the control unit through the socket.

[0009] Furthermore, the nursing device also includes a precise distance controller and an airbag-type body positioning calibrator; the airbag-type body positioning calibrator includes a clamping part and an airbag housing fixedly connected to the clamping part, the airbag housing is provided with a soft and foldable airbag, the precise distance controller is used to detect the distance between it and the user, the control unit controls the inflation of the airbag in the airbag-type body positioning calibrator according to the detected distance, and the precise distance controller, the airbag-type body positioning calibrator and the control unit communicate wirelessly.

[0010] Furthermore, the precise distance controller is equipped with a light intensity illuminance sensor, an ultrasonic ranging sensor, a control board, a remote control transmitter, and a battery. The light intensity illuminance sensor is used to monitor the ambient light intensity. The light intensity illuminance sensor, the ultrasonic ranging sensor, and the remote control transmitter are all electrically connected to the control board.

[0011] Furthermore, the airbag housing is also equipped with a pressure sensor, a remote control receiver, an inflation pump, and a battery. The inflation pump is connected to the soft folding airbag, the pressure sensor is used to monitor the air pressure of the soft folding airbag, and the remote control receiver is used to receive signals from the remote control transmitter and start the inflation pump to inflate the airbag.

[0012] The beneficial effects of this invention are:

[0013] The nursing device of this invention is compact, convenient and practical through its structural design. It can be used like watching on a mobile phone. Furthermore, it combines a finger acupoint stimulation button with red light heat massage function, a precise distance controller and an airbag-type body position calibrator. It can assist in acupoint massage or promptly remind users to maintain the correct viewing distance and writing posture, which is beneficial for daily eye care and prevention and reduction of eye diseases such as myopia. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a specific example structure of the intelligent red light spectrum nursing device of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the spectrum controller body and the finger acupoint stimulation buckle in a specific embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the focusing optics of the main body of the spectrum controller in this invention.

[0017] Figure 4 This is a schematic diagram of the structure of the precision distance controller and the airbag-type body positioning calibrator in a specific embodiment of the present invention.

[0018] Figure 5 This is a specific circuit implementation diagram of the main body of the spectrum controller in this invention.

[0019] Figure 6 This is a specific circuit diagram of the finger acupoint stimulation button in this invention.

[0020] Figure 7 This is a specific circuit diagram of the precision distance controller and airbag-type body positioning calibrator in this invention.

[0021] In the diagram: 1. Main body of spectrum controller; 2. Finger acupoint stimulation buckle; 3. Precision distance controller; 4. Airbag-type body position calibrator; 11. Top cover; 12. Control unit; 13. Battery; 14. Bottom cover; 15. Optical convex lens; 16. Distance sensor; 17. LED mounting area; 18. Pulse transformer; 21. Finger buckle outer base; 22. Red LED; 23. PTC heating resistor; 24. Conductive rubber electrode; 25. Finger buckle inner fixing ring; 26. Finger buckle top cover; 27. Connecting wire; 31. Outer shell top cover; 32. Light intensity sensor; 33. PCB control board; 34. Remote control transmitter board; 35. Ultrasonic ranging sensor; 36. Battery; 37. Outer shell bottom cover; 41. Clamping part; 42. Air pressure sensor; 43. Remote control receiver; 44. Air pump; 45. Battery; 46. Outer shell base; 47. Soft folding airbag. Detailed Implementation

[0022] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The intelligent red light spectrum care device of this invention is an integrated innovation and improvement based on existing technology. It fully combines the widely proven specific wavelength red light irradiation to promote blood circulation in the eyes, the theory of meridians and acupoints in traditional Chinese medicine, and correct eye use habits to develop a small, portable, practical, and powerful eye care instrument.

[0024] According to a specific example of the present invention, such as Figure 1 As shown, the intelligent red light spectrum nursing device includes a spectrum controller body 1, a finger acupoint stimulation buckle 2, a precision distance controller 3, and an airbag-type body position calibrator 4;

[0025] like Figure 2 , 3 As shown, the spectrum controller body 1 contains a control unit 12 and a distance sensor 16. The spectrum controller body is flat and has an optical focusing window. An optical convex lens 15 is located at the optical focusing window, and a red LED light panel is located below the optical convex lens. The red LED light panel and the distance sensor are electrically connected to the control unit. The control unit controls the power of the red LED light panel based on the distance between the spectrum controller body and the user detected by the distance sensor, and controls the light emission duration of the red LED light panel according to a preset value. The optical convex lens is used to focus the light emitted by the red LED light panel. The light emission wavelength of the red LED light panel is 650-850nm, and it uses a soft, ordinary red LED, rather than high-brightness, high-energy laser red light, to ensure the safety of the human retina. The optical convex lens can be made of PC material to form a transparent convex lens, or it can be a Fresnel lens, such as... Figure 3 The image shows the projection effect of this optical focusing. When the main body of the spectrum controller of this invention is within an effective usage distance of 5cm-45cm, the optimal focal length of the optical convex lens is set to 6.5cm to concentrate more than 90% of the red light energy onto the projection area (i.e., the area where the human eye is located during use). Through the above design, the external structure of this invention can be designed to be small and ultra-thin, and it can be viewed like a regular mobile phone, which is very convenient.

[0026] In addition, the main body of the spectrum controller may also be equipped with several sets of green LED beads. The green LED beads are electrically connected to the control unit and are controlled by the control unit to light up intermittently after the red LED light panel is turned off, so as to assist in the adjustment of the ciliary muscle.

[0027] According to a specific embodiment of the present invention, in order to enhance the effect of red light therapy and avoid excessive stimulation to the eyes, the power of the red light LED panel can be controlled according to the distance between the main body of the spectrum controller and the user detected by the distance sensor, thereby controlling the intensity of the red light emitted by the main body of the spectrum controller to always remain at approximately 1.5 milliwatts / cm² at a distance of 5cm to 45cm. 2 After 180 seconds of care, the main unit automatically emits a jumping green light to adjust the eye muscles, and then automatically shuts down after 120 seconds.

[0028] According to a specific embodiment of the present invention, the finger acupoint stimulation buckle 2 includes a housing and a connecting wire 27. The housing is provided with a conductive rubber electrode 24, a red LED 22, and a PTC heating resistor 23. The red LED, PTC heating resistor, and conductive rubber electrode are all electrically connected to the connecting wire. The spectrum controller body is provided with a socket for electrical connection to the control unit. The connecting wire connects the red LED, PTC heating resistor, and conductive rubber electrode to the control unit through the socket. By controlling the heating of the PTC heating resistor in the finger acupoint stimulation buckle and modulating the emission of the red LED (which can be a conventional 650nm red LED or a laser red light) within the nursing device, and simultaneously outputting pulse stimulation signals of a certain amplitude and multiple frequencies to the conductive rubber electrode, it is possible to conveniently stimulate and massage acupoints related to eye care for personalized care. Figure 2 In the example shown, the finger acupoint stimulation buckle includes an outer base 21, a 650nm red LED 22, a 10-ohm PTC heating resistor 23, a conductive rubber electrode 24, an inner fixing ring 25, and a top cover 26. The outer base 21 and the top cover 26 fasten together to fix the inner fixing ring 25. The outer base 21 has a circumferential opening to expose the 650nm red LED 22 and the conductive rubber electrode 24 mounted on the inner fixing ring 25. During use, this exposed portion is pressed onto the relevant acupoint. In other embodiments of the invention, the components in the finger acupoint stimulation buckle can also adopt other structural layouts. The components are connected to the main body of the spectrum controller via connecting wires 27, allowing the user to freely control them on the main body of the controller as required.

[0029] According to a specific example of the present invention, such as Figure 4 As shown, the airbag-type posture calibrator 4 includes a clamping part 41 and an airbag housing fixedly connected to the clamping part. The airbag housing is equipped with a soft, foldable airbag 47. A precise distance controller 3 is used to detect the distance between the device and the user. The control unit controls the inflation of the airbag in the airbag-type posture calibrator based on the detected distance. The precise distance controller, the airbag-type posture calibrator, and the control unit communicate wirelessly. The main body of the spectrum controller of the intelligent red light spectrum care device can activate the precise distance controller and the airbag-type posture calibrator via wireless remote control or Bluetooth channel, reminding the user to maintain the correct eye distance while reading or writing. Figure 4In the example shown, the precision distance controller 3 includes a housing cover 31, a light intensity sensor 32, a PCB control board 33, a remote control transmitter 34, an ultrasonic ranging sensor 35, a battery 36, and a housing bottom cover 37. The light intensity sensor 32 is used to monitor ambient light intensity. The light intensity sensor 32, the ultrasonic ranging sensor 35, and the remote control transmitter 34 are all electrically connected to the control board 33. The airbag-type body positioning calibrator 4 includes a clamping part 41, a pressure sensor 42, a remote control receiver 43, an air pump 44, a battery 45, a housing base 46, and a soft folding airbag 47. The pressure sensor 42 is used to monitor the air pressure of the soft folding airbag, and the remote control receiver... The device is used to receive signals from the remote transmitter and start the air pump to inflate the air. The remote transmitter and receiver can be 2.4G remote controllers, and the air pressure sensor can be a 1kPa air pressure sensor similar to that in a blood pressure monitor. Similarly, the air pump can be a 3.7V DC small air pump from the same source as an automatic blood pressure monitor. When in use, the airbag-type body position calibrator 4 can be fixedly installed on the edge of the table through the clamping part. The soft folding airbag automatically folds when not inflated. The precise distance controller 3 can be placed in front of a book or on the edge of the table to detect the distance between it and the user. When the human body is too close to the table, the main body of the controller will send a signal and start the air pump to inflate the air, automatically calibrating the human body position.

[0030] Figures 5-7 This is a circuit implementation control schematic diagram of a specific embodiment of the present invention. The basic flow and principle of the control circuit in this embodiment are described in detail below with reference to the schematic diagram:

[0031] exist Figure 5 The electrical part of the controller is located in the middle. This part can automatically adjust the power and energy of the red LED light source according to the change of the usage distance to maintain the light energy balance and consistency within the usage distance.

[0032] In the diagram, U1A and U1B form an SR flip-flop. When the J37 sw button is pressed, pin 1 of U1A is pulled from high to low. This causes the output of U1B to switch from high to low, turning on Q2. The battery voltage then outputs part of the operating voltage of the entire unit via Q2D. Simultaneously, U2 also starts working. At this time, diode D3 provides a high level, causing the asymmetric multivibrator composed of U1C and U1D to start operating. The duty cycle of the output pulse is R8 / R5 = 4.7kJ / 100kJ = 0.047, 3.7V × 0.047 = 0.17 volts. This pulse turns on Q11, which then provides approximately 0.2 volts of DC power to the external red LED board.

[0033] The effective value of the output voltage of Q1 is adjusted by turning on the four comparators A, B, C, and D of U5 respectively through the distance sensor (i.e., the position sensor in the diagram). The infrared laser distance sensor used in this example is model GP2YDE03, and its distance-voltage characteristics are as follows:

[0034] 1. When the distance from the person's eyes is less than 5 centimeters, the output voltage is 0 volts;

[0035] 2. When the distance from the eyes is 5 to 10 centimeters, the output voltage is 2 to 2.2 volts;

[0036] 3. When the distance from the eyes is 10 to 25 centimeters, the output voltage is 1.5 to 2 volts;

[0037] 4. When the distance from the human eye is 25 to 45 centimeters, the output voltage is 0.5 to 1.5 volts.

[0038] Therefore, when the distance to a person is less than 5 cm or greater than 45 cm, the sensor output voltage is 0 to 0.5 volts. At this time, through the common input terminal of the four comparators, namely the common terminal of R76, R68, R57, and R40, U5D outputs a high level. Since there are no additional components, the output voltage of Q1 is still 0.2 volts.

[0039] When the distance to the human eye is 5-10 cm, the output of U5C is high. This high level turns on Q18, causing C11 to be connected in parallel across R30 of Q11, changing the duty cycle to 1 / 2. At this point, the output voltage of Q1 is approximately 2.5 volts, and the red light irradiation power at that location is approximately 1.5 mW / cm². 2 ;

[0040] When the distance to the person's eyes is 10-25 cm, U5B outputs a high level. This high level turns on Q17, causing C10 to be connected in parallel across R30, thus changing the duty cycle to 2 / 3. At this point, the output voltage of Q1 is approximately 3.3 volts, and the received red light irradiation power is still 1.5 mW / cm². 2 ;

[0041] When the instrument is 25-45 cm away from the human eye, U5A starts working, turning on Q16 and connecting C9 in parallel across R30 of Q11, thus changing the duty cycle to 1 / 1. The output of Q1 is approximately 3.7-4.2 volts, and the red light irradiation power measured at 45 cm from the human eye is still 1.7 mW / cm². 2 In this way, by adjusting the voltage of the red LED light panel to regulate its power, the amount of red light irradiation received by people at a distance of 5-45 cm from the eyes can be kept within a safe range to avoid damage to the eyes.

[0042] During the red light illumination period, U2 also enters the working state. It is set that after approximately 3 minutes of power-on, Q9 on U2 outputs a high level. This high level, through D5, stops U2 from oscillating and maintains its current state (Q9 remains high). Simultaneously, through the high setting of D6, the conduction of Q13 is turned off, extinguishing the red light illumination. At this time, the high level of Q9, through D7, turns on Q14 and Q15, applying operating voltage to U3, U4, and U6, causing them to start working (the 8 external green LEDs sequentially jump to display). After U6 starts working, the high level output of Q10, through R12, turns on Q12, triggering the SR flip-flop, thereby shutting down the entire machine's power supply and entering the shutdown state. The workflow before shutdown can be set as follows: The internal pins Q4, Q5, and Q6 of U6 output a set of binary codes, which are provided for the dynamic address encoding of U3 and U4. U3 and U4 are CC4051, an 8-to-1 analog switch. Pin 3 is the common terminal. By grounding pin 3, X0, X1, X2, X3, X4, X5, X6, and X7 are connected to pin 3 according to the binary code changes. Therefore, X0, X1, X2, X3, X4, X5, X6, and X7 can respectively turn on Q3, Q4, Q5, Q6, Q7, Q8, Q9, and Q10. Eight or eight groups of green LEDs can be connected in the order of J1, J2, J3, J4, J5, J6, J7, and J8 on the PCB. Simultaneously, the output pulse of Q7 from U6 can instantly change the oscillation frequency of U6 via optocoupler U7pc817, causing the eight external green LEDs to light up at varying speeds, thus increasing the adjustment of the eye muscles and better protecting the eyes.

[0043] Figure 6 The diagram shows the electrical components of a precision distance controller and an airbag-type posture calibrator. These devices are used to maintain correct posture and a suitable distance when reading and writing. The fully automatic intelligent control reminds users of the correct viewing distance, effectively protecting the eyes and reducing eye strain at all times. The main circuit operation is as follows: In the diagram, U1a and U1b form a pair of SR flip-flops. The spectrum control host sends a 2.5G modulated remote control signal, which is received, decoded, and outputs a high-level signal. Figure 6At point 'a', Q1 causes the RS trigger to flip, thus putting Q2 and Q3 into operation. Q2 is an AO3400, and Q3 is an AO3401. Q3 acts as a switch to supply battery power to the entire device. In this example, the distance sensor uses a commercially available ultrasonic transmitter and receiver. U1c and U1d form a 100kHz multivibrator (T = 10µs). C1 is 250pF, R7 is 20kΩ, and the pulse transmission time is only 50µs, transmitting only 5 pulse signals. This signal is applied to the ultrasonic transmitter via R9 and Q8 for external transmission. The signal will return to the instrument's ultrasonic receiver upon encountering various obstacles. The given 50µs transmission time is achieved by an asymmetric multivibrator composed of U2a and U2b. Its high-level narrow pulse width is composed of R11 and C3. Considering the typical speed of sound in air is 340 m / s, 1000ms / 340 meters translates to 2940µs / meter. Therefore, the period T of the asymmetric multivibrator composed of U2a and U2b should be 2940us + 50us = 2990us, from which R10 is calculated to be 5900k. When the ultrasonic transmitter emits five 10µs signals, the SR flip-flop composed of U2c and U2d is triggered by R29 and Q4, resulting in a high-level signal at T3 (this signal only goes low when the ultrasonic receiver receives the reflected wave). After the ultrasonic receiver receives the reflected echo signal, it passes through the filter composed of C2 and R16 and enters the U3a operational amplifier circuit, reliably and effectively triggering Q5. This flips the SR flip-flop composed of U2c and U2d, causing T3 to drop to a low level. Therefore, the width of the high level at T3 is directly proportional to the distance of the received reflected echo. This allows for precise adjustment of the distance, which is then fed into the A / D converter via the U3b emitter follower for accurate distance detection. When the detected distance is too close, a start signal is sent to point 'b' below the circuit diagram via a commercially available 2.5G wireless remote control signal, inflating the airbag with a miniature air pump to calibrate the user's position. Once the airbag is fully inflated, the built-in pressure sensor sends a signal to shut off the air pump.

[0044] Figure 7This is an example of the control circuit in a finger acupoint stimulation device (referred to as a finger tap). The working process is as follows: External connections: BC terminals are connected to conductive rubber stimulation electrodes; AE terminals are connected to a 650nm red light or laser tube; AD terminals are connected to a 10-ohm PTC thermistor with a Curie point of 60 degrees. The circuit operates as follows: When switch K is turned on, a 3.7–4.2V voltage is supplied to the chip and transformer. Transformer B and Q1 form a pulse transformer combination. The secondary coil is rectified by D1–4 to obtain a 60–65V DC voltage. The working pulse is formed by the cutoff or conduction of Q2, and its frequency is determined by the multivibrator on the right side of U1, which can be changed by adjusting the value of resistor RP2. Q2 is an AO3400, U1 is a 74HC00, and the left side of U1 is also a multivibrator, mainly used to adjust the duty cycle of Q3. Adjusting RP1 controls the heat generated by the PTC thermistor.

[0045] As can be seen, the present invention, through the design of the main body of the spectrum controller, the finger buckle, the precise distance measuring device, the body position calibration device, and each separate structure, forms a compact and multi-faceted eye care system. The main body of the device can be made ultra-thin, easy to carry, and the device has comprehensive functions, which is conducive to its widespread application.

Claims

1. An intelligent red light spectrum therapy device, characterized in that, The device includes a spectrum controller body, a control unit located within the spectrum controller body, and a distance sensor located on the spectrum controller body. The spectrum controller body is flat and has an optical focusing window. An optical convex lens is located at the optical focusing window, and a red LED light panel is located below the optical convex lens. The red LED light panel and the distance sensor are electrically connected to the control unit. The control unit controls the power of the red LED light panel based on the distance between the spectrum controller body and the user detected by the distance sensor, thereby controlling the intensity of the red light emitted by the spectrum controller body to maintain a balanced light energy at a distance of 5cm to 45cm. It also controls the emission duration of the red LED light panel according to a preset setting. The optical convex lens is used to focus the emission of the red LED light panel. The emission wavelength of the red LED light panel is 650~850nm, and the focal length of the optical convex lens is 6.5cm, so that more than 90% of the red light energy is concentrated and projected onto the area where the user's eyes are located within an effective usage distance of 5cm-45cm. The control unit controls the red light intensity emitted by the main body of the spectrum controller to maintain a balanced light energy from 5cm to 45cm. Specifically, the circuit connects the signal output terminal of the distance sensor GP2YDE03 to the four signal input terminals of the four comparators U5, namely the non-inverting input terminal of U5A, the non-inverting input terminal of U5B, the non-inverting input terminal of U5C, and the non-inverting input terminal of U5D. One end of the voltage divider resistors R76, R68, R57, and R40 is connected to the corresponding inverting input terminals of U5A, U5B, U5C, and U5D, respectively, and the other end is grounded together to form the reference voltage loop of the four comparators. The output terminal of U5A is connected to the base of the switching transistor Q16; The output terminal of U5B is connected to the base of the switching transistor Q17; The output terminal of U5C is connected to the base of the switching transistor Q18; The output of the U5D has no external switching transistor and is left floating. The emitters of switching transistors Q16, Q17, and Q18 are all connected to the common reference ground of the circuit, and their collectors are connected to one end of the regulating capacitors C9, C10, and C11, respectively. The other ends of the regulating capacitors C9, C10, and C11 are all connected in parallel to the two ends of the power resistor R30. One end of the power resistor R30 is connected to the collector of the amplifier transistor Q11, and the other end is connected to the circuit's common reference ground. The base of amplifier transistor Q11 is connected to the output of the asymmetric multivibrator composed of U1C / U1D, and its emitter is connected to the base of driver transistor Q1. The emitter of driver transistor Q1 is connected to the 3.7V power supply of the whole machine, and its collector is directly connected to the positive power supply terminal of the red LED light board. The negative ground terminal of the red LED light board is connected to the common reference ground of the circuit, forming a complete power supply loop.

2. The intelligent red light spectrum nursing device according to claim 1, characterized in that, The optical convex lens is replaced by a Fresnel lens.

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