Control circuit of hot compress equipment

Abstract

A control circuit of hot compress equipment comprises a control unit, a first light-emitting unit, a second light-emitting unit and a heating unit. The first light-emitting unit, the second light-emitting unit and the heating unit are respectively connected with the control unit, and the control unit sends out a control instruction to control the working states of the first light-emitting unit, the second light-emitting unit and the heating unit. Through combined work of the heating unit and the two light-emitting units, it is displayed that the hot compress device is started and can work normally to a user, in the hot compress process, hot compress massage information such as overheating, normality and supercooling of the hot compress device is transmitted through the first light-emitting unit, the interaction performance of the device is improved, and the user experience is improved. The user can conveniently adjust the heating time and temperature according to the current working condition of the hot compress equipment, and the user can visually recognize information such as brands, models and front and back positions through the second light-emitting unit of the hot compress equipment.

Description

Technical Field

[0001] The utility model belongs to the field of circuit management of medical and health care equipment, and particularly relates to a control circuit of a hot compress device. Background Art

[0002] A hot compress device is a medical and health care device used for relaxing muscles, relieving fatigue and pain. There are various types of hot compress devices, including but not limited to: hot compress bags, hot compress pads, wet hot compress devices, traditional Chinese medicine hot compress devices, portable hot compress devices, hot compress warm womb bags, etc.

[0003] Many existing portable hot compress devices have a heating function. However, many hot compress devices lack an effective and simple control circuit to display the heating working condition. It is difficult for users to intuitively feel whether the heating temperature of the current hot compress device is too high, too low, or normal. Moreover, in a scene with insufficient light, it is difficult to accurately identify the front and back of the device, and it is impossible to directly understand the brand and model of the currently used hot compress device, which is difficult to improve the user's stickiness to the hot compress device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a control circuit of a hot compress device to solve the technical problems existing in the prior art.

[0005] A control circuit of a hot compress device includes: a control unit, a first light emitting unit, a second light emitting unit, and a heating unit; the first light emitting unit, the second light emitting unit, and the heating unit are respectively connected to the control unit, and the control unit issues control instructions to control the working states of the first light emitting unit, the second light emitting unit, and the heating unit.

[0006] Preferably, the control unit includes a control chip U1; the first light emitting unit includes: a first light emitting control chip D1, a first pin of the first light emitting control chip D1 is connected to a light emitting working voltage Vcc1, a first color light pin R pin of the first light emitting control chip D1 is connected to a first color light control pin PD pin of the control chip U1, a second color light pin G pin of the first light emitting control chip D1 is connected to a second color light control pin PM pin of the control chip U1, and a third color light pin B pin of the first light emitting control chip D1 is connected to a third color light control pin LED_R pin of the control chip U1.

[0007] Preferably, the voltage range of the light emitting working voltage Vcc1 is 2 - 6V; the first light emitting unit further includes: a light emitting diode or an LED lamp bead.

[0008] Preferably, the control unit includes a control chip U1; the second light-emitting unit includes: a light-emitting strip D2 and a light-emitting control element Q1; the second light-emitting unit control pin L_EN of the control chip U1 is electrically connected to the light-emitting control element Q1 to control the on / off of the light-emitting control element Q1; one end of the light-emitting strip D2 is connected to the battery voltage B+, and the other end is connected to the light-emitting control element Q1; when the light-emitting control element Q1 is turned on, the light-emitting strip D2 emits light, and when the light-emitting control element Q1 is turned off, the light-emitting strip D2 goes out.

[0009] Preferably, the voltage range of the battery voltage B+ is 2 to 10V; the light-emitting strip D2 is one or a combination of a light-emitting diode strip, a light-emitting LED strip, and a PCB strip; the light-emitting control element Q1 is one of a triode and a field effect transistor.

[0010] Preferably, the control unit includes a control chip U1; the heating unit includes: a heating sheet and a heating sheet driving unit.

[0011] Preferably, the heating sheet driving unit includes a first driving switch Q2 and a second driving switch Q3; the heating sheet control pin HOT_PWM of the control chip U1 is electrically connected to the first driving switch Q2 to control the on / off and the opening degree of the first driving switch Q2; the first driving switch Q2 is electrically connected to the second driving switch Q3 to control the on / off and the opening degree of the second driving switch Q3; the positive electrode H+ of the heating sheet is connected to the heating sheet working voltage Vcc2 through the second driving switch Q3.

[0012] Preferably, the heating sheet driving switch Q2 is one of a triode and a field effect transistor; the temperature monitoring pin HOT_I_AD of the control chip U1 is connected to the negative electrode H- of the heating sheet, and the negative electrode H- of the heating sheet is grounded through a protection resistor R11.

[0013] Preferably, the control unit includes a control chip U1; the first light-emitting unit includes: a first light-emitting control chip D1, a first pin of the first light-emitting control chip D1 is connected to a light-emitting operating voltage Vcc1, a first color light pin (R pin) of the first light-emitting control chip D1 is connected to a first color light control pin (PD pin) of the control chip U1, a second color light pin (G pin) of the first light-emitting control chip D1 is connected to a second color light control pin (PM pin) of the control chip U1, and a third color light pin (B pin) of the first light-emitting control chip D1 is connected to a third color light control pin (LED_R pin) of the control chip U1; the second light-emitting unit includes: a light-emitting strip D2 and a light-emitting control element Q1; a second light-emitting unit control pin (L_EN pin) of the control chip U1 is electrically connected to the light-emitting control element Q1 to control the on / off of the light-emitting control element Q1; one end of the light-emitting strip D2 is connected to a battery voltage B+, and the other end is connected to the light-emitting control element Q1; when the light-emitting control element Q1 is turned on, the light-emitting strip D2 emits light, and when the light-emitting control element Q1 is turned off, the light-emitting strip D2 goes out; the heating unit includes: a heating sheet and a heating sheet driving unit, and the heating sheet driving unit includes a first driving switch Q2 and a second driving switch Q3; a heating sheet control pin (HOT_PWM pin) of the control chip U1 is electrically connected to the first driving switch Q2 to control the on / off and opening degree of the first driving switch Q2; the first driving switch Q2 is electrically connected to the second driving switch Q3 to control the on / off and opening degree of the second driving switch Q3; the positive electrode H+ of the heating sheet is connected to a heating sheet operating voltage Vcc2 through the second driving switch Q3.

[0014] Preferably, the voltage range of the light-emitting operating voltage Vcc1 is 2 to 6V; the first light-emitting unit further includes: a light-emitting diode or an LED lamp bead; the voltage range of the battery voltage B+ is 2 to 10V; the light-emitting strip D2 is one or a combination of a light-emitting diode strip, a light-emitting LED strip, and a PCB strip; the light-emitting control element Q1 is one of a triode and a field effect transistor; the first driving switch Q2 and the second driving switch Q3 are one of a triode and a field effect transistor; a temperature monitoring pin (HOT_I_AD pin) of the control chip U1 is connected to the negative electrode H- of the heating sheet, and the negative electrode H- of the heating sheet is grounded through a protection resistor R11.

[0015] The power supply management circuit of the present application, through the combined operation of the heating unit and the two light-emitting units, shows the user that the hot compress device has been turned on and can work normally, and during the heating process, through the first light-emitting unit, it transmits hot compress massage information such as overheating, normal, and overcooling of the hot compress device, improving the interaction performance of the device, facilitating the user to adjust the heating time and temperature according to the current working condition of the hot compress device, and the user can also intuitively identify information such as the brand, model, and front and back positions through the second light-emitting unit of the hot compress device. Description of the Drawings

[0016] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a functional module diagram of the control circuit for a hot compress device.

[0018] Figure 2 It is a wiring circuit diagram of the control chip for an embodiment of the control circuit of a hot compress device.

[0019] Figure 3 It is a schematic circuit diagram of the first light-emitting unit for an embodiment of the control circuit of a hot compress device.

[0020] Figure 4 It is a schematic circuit diagram of the second light-emitting unit for an embodiment of the control circuit of a hot compress device.

[0021] Figure 5 It is a schematic circuit diagram of the heating unit for an embodiment of the control circuit of a hot compress device. Specific embodiments

[0022] In the following description, various specific details are provided to facilitate the understanding of the embodiments provided by way of example as much as possible. These embodiments can be implemented with or without specific details, or in the case of having other methods, components, materials, etc. In other cases, well-known structures, materials, or operations are not shown or described in detail so as not to obscure the aspects of these embodiments. References to "embodiment" or "an embodiment" in the framework of this description mean that a given characteristic, structure, or feature described in connection with the embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment" or "in one embodiment" appearing in various places in this description do not necessarily refer to one and the same embodiment. In addition, characteristics, structures, or features can be combined in one or more embodiments in any convenient manner.

[0023] As shown in the attached Figures 1-5 specification:

[0024] A control circuit for a hot compress device includes: a control unit, a first light-emitting unit, a second light-emitting unit, and a heating unit; the first light-emitting unit, the second light-emitting unit, and the heating unit are respectively connected to the control unit, and the control unit issues control instructions to control the working states of the first light-emitting unit, the second light-emitting unit, and the heating unit.

[0025] The control unit sends control instructions to the heating unit to control the heating unit to heat or stop heating. The control unit sends control instructions to the first light-emitting unit to control the first light-emitting unit to emit colored light of different colors, so as to convey information about the current heating working condition of the hot compress device to the user, including: the hot compress device is overheated, the temperature of the hot compress device is normal, and the temperature of the hot compress device is too low. The control unit sends control instructions to the second light-emitting unit to control the second light-emitting unit to work (emit light) / turn off (not emit light). The user can obtain the information "the hot compress device has been turned on and can work normally" through the light emission of the second light-emitting unit. Moreover, the second light-emitting unit can be made into a specific shape to facilitate the user to identify the brand, model, front and back positions, etc. of the hot compress device.

[0026] Through this embodiment, by the combined work of the heating unit and the two light-emitting units, it is shown to the user that the hot compress device has been turned on and can work normally. During the heating process, information such as overheating, normal, and overcooling of the hot compress massage of the hot compress device is transmitted through the first light-emitting unit, improving the interaction performance of the device, facilitating the user to adjust the heating time and temperature according to the current working condition of the hot compress device. The user can also directly identify information such as the brand, model, front and back positions, etc. through the second light-emitting unit of the hot compress device.

[0027] In one embodiment, the control unit includes a control chip U1; the first light-emitting unit includes: a first light-emitting control chip D1. The first pin of the first light-emitting control chip D1 is connected to the light-emitting working voltage Vcc1. The first color light pin (R pin) of the first light-emitting control chip D1 is connected to the first color light control pin (PD pin) of the control chip U1. The second color light pin (G pin) of the first light-emitting control chip D1 is connected to the second color light control pin (PM pin) of the control chip U1. The third color light pin (B pin) of the first light-emitting control chip D1 is connected to the third color light control pin (LED_R pin) of the control chip U1. The three color lights of the first color light, the second color light, and the third color light are of different colors pairwise. For example: the first color light can be red light, the second color light can be green light, and the third color light can be blue light. In addition to red, green, and blue, lights of other colors can also be used for the light display described in this application.

[0028] In this embodiment, the first light-emitting control chip is controlled by the control chip. When receiving instructions that the hot compress device is overheated, the temperature of the hot compress device is normal, and the temperature of the hot compress device is too low, it respectively issues the first color light lamp display instruction, the second color light lamp display instruction, and the third color light lamp display instruction (such as: red light display instruction, green light display instruction, blue light display instruction).

[0029] In one embodiment, the voltage range of the light-emitting working voltage Vcc1 is 2-6V; the first light-emitting unit further includes: light-emitting diodes or LED lamp beads, and multiple light-emitting diodes or LED lamp beads are respectively connected to the first light-emitting control chip D1 to emit the first color light, the second color light, and the third color light.

[0030] In this embodiment, multiple light-emitting diodes or LED lamp beads of the first light-emitting unit emit first-color light, second-color light, and third-color light (e.g., red light, green light, blue light) according to the received display instruction.

[0031] In one embodiment, the control unit includes a control chip U1; the second light-emitting unit includes: a light-emitting strip D2 and a light-emitting control element Q1; the second light-emitting unit control pin L_EN pin of the control chip U1 is electrically connected to the light-emitting control element Q1 to control the on / off of the light-emitting control element Q1; one end of the light-emitting strip D2 is connected to the battery voltage B+, and the other end is connected to the light-emitting control element Q1; when the light-emitting control element Q1 is turned on, the light-emitting strip D2 emits light, and when the light-emitting control element Q1 is turned off, the light-emitting strip D2 goes out.

[0032] In this embodiment, the control chip of the hot compress device controls the lighting / extinguishing of the light-emitting strip through the light-emitting control element, so that the customer can know that "the hot compress device has been turned on and can work normally", and furthermore, information such as the brand, model, and front and back positions can be intuitively identified through the light-emitting strip.

[0033] In one embodiment, the voltage range of the battery voltage B+ is 2 to 10V; the light-emitting strip D2 is a combination of one or more of a light-emitting diode strip, a light-emitting LED strip, and a PCB strip; the light-emitting control element Q1 is one of a triode and a field effect transistor.

[0034] In this embodiment, the type and model of the light-emitting strip and the light-emitting control element can be selected according to the hardware conditions of the hot compress device, so as to save costs and improve the lighting effect and control performance of the device.

[0035] In one embodiment, the control unit includes a control chip U1; the heating unit includes: a heating sheet and a heating sheet driving unit.

[0036] In this embodiment, the control chip controls the heating work / stopping heating of the heating sheet through the heating sheet driving unit, so as to turn on / off the heating function of the hot compress device.

[0037] In one embodiment, the heating sheet driving unit includes a first driving switch Q2 and a second driving switch Q3; the heating sheet control pin HOT_PWM pin of the control chip U1 is electrically connected to the first driving switch Q2 to control the on / off and opening degree of the first driving switch Q2; the first driving switch Q2 is electrically connected to the second driving switch Q3 to control the on / off and opening degree of the second driving switch Q3; the positive electrode H+ of the heating sheet is connected to the heating sheet working voltage Vcc2 through the second driving switch Q3, and the on / off and opening degree of the second driving switch Q3 are used to control the on / off of the path between the positive electrode H+ of the heating sheet and the heating sheet working voltage Vcc2 and the input voltage value of the positive electrode H+ of the heating sheet.

[0038] In this embodiment, the first driving switch Q2 and the second driving switch Q3 form a heating element driving switch, which reduces power loss, ensures the reliability of the path, and realizes more precise voltage control. The control chip U1 controls the on / off of the switch circuit by sending out a heating element control signal HOT_PWM, and can control the on / off of the path between the positive electrode H+ of the heating element and the working voltage Vcc2 of the heating element. The opening degree of the switch circuit controlled by the heating element control signal HOT_PWM can control the input voltage value of the positive electrode H+ of the heating element. The control chip controls the on / off and opening degree of the heating element driving switch, thereby controlling the heating / stopping of the heating element and the input voltage value of the heating element, and realizes the control of the working state of the heating element through intuitive control instructions.

[0039] In one embodiment, the first driving switch Q2 and the second driving switch Q3 are one of a triode and a field effect transistor; the temperature monitoring pin HOT_I_AD pin of the control chip U1 is connected to the negative electrode H- of the heating element, and the negative electrode H- of the heating element is grounded through a protection resistor R11.

[0040] In this embodiment, the type and model of the heating element driving switch can be selected according to the hardware conditions of the hot compress device, so as to save costs and improve the control performance of the device. The control chip U1 monitors the voltage of the negative electrode of the heating element through temperature monitoring, calculates to obtain the current working voltage of the heating element, further obtains the current temperature of the heating element, and then calculates information such as "the hot compress device is overheated, the temperature of the hot compress device is normal, and the temperature of the hot compress device is too low" according to the current temperature of the heating element, so as to monitor the working state of the heating element.

[0041] In one embodiment, the control unit includes a control chip U1; the first light-emitting unit includes: a first light-emitting control chip D1, a first pin of the first light-emitting control chip D1 is connected to the light-emitting operating voltage Vcc1, a first color light pin (R pin) of the first light-emitting control chip D1 is connected to a first color light control pin (PD pin) of the control chip U1, a second color light pin (G pin) of the first light-emitting control chip D1 is connected to a second color light control pin (PM pin) of the control chip U1, and a third color light pin (B pin) of the first light-emitting control chip D1 is connected to a third color light control pin (LED_R pin) of the control chip U1; the second light-emitting unit includes: a light-emitting strip D2 and a light-emitting control element Q1; a second light-emitting unit control pin (L_EN pin) of the control chip U1 is electrically connected to the light-emitting control element Q1 to control the on / off of the light-emitting control element Q1; one end of the light-emitting strip D2 is connected to the battery voltage B+, and the other end is connected to the light-emitting control element Q1; when the light-emitting control element Q1 is turned on, the light-emitting strip D2 emits light, and when the light-emitting control element Q1 is turned off, the light-emitting strip D2 goes out; the heating unit includes: a heating sheet and a heating sheet driving unit, and the heating sheet driving unit includes a first driving switch Q2 and a second driving switch Q3; a heating sheet control pin (HOT_PWM pin) of the control chip U1 is electrically connected to the first driving switch Q2 to control the on / off and the opening degree of the first driving switch Q2; the first driving switch Q2 is electrically connected to the second driving switch Q3 to control the on / off and the opening degree of the second driving switch Q3; the positive electrode H+ of the heating sheet is connected to the heating sheet operating voltage Vcc2 through the second driving switch Q3, and the on / off and the opening degree of the second driving switch Q3 are used to control the on / off of the path between the positive electrode H+ of the heating sheet and the heating sheet operating voltage Vcc2 and the input voltage value of the positive electrode H+ of the heating sheet.

[0042] In this embodiment, the control chip U1 controls the heating / stopping of the heating sheet by controlling the on / off of the heating sheet driving switch, and realizes the control of the working state of the heating sheet through an intuitive control instruction; the first light-emitting control chip D1 is controlled by the control chip U1, and when receiving instructions of overheating of the hot compress device, normal temperature of the hot compress device, and too low temperature of the hot compress device, it issues a first color light display instruction, a second color light display instruction, and a third color light display instruction respectively (such as: red light display instruction, green light display instruction, blue light display instruction); the control chip U1 of the hot compress device controls the lighting / extinguishing of the light-emitting strip D2 through the light-emitting control element, so that the customer can know that "the hot compress device has been turned on and can work normally", and furthermore, information such as the brand, model, front and back positions, etc. can be intuitively identified through the light-emitting strip D2.

[0043] In one embodiment, the voltage range of the light-emitting operating voltage Vcc1 is 2 to 6V; the first light-emitting unit further includes: a light-emitting diode or an LED lamp bead; the voltage range of the battery voltage B+ is 2 to 10V; the light-emitting strip D2 is one or a combination of a light-emitting diode strip, a light-emitting LED strip, and a PCB strip; the light-emitting control element Q1 is one of a triode and a field-effect transistor; the first drive switch Q2 and the second drive switch Q3 are one of a triode and a field-effect transistor; the temperature monitoring pin HOT_I_AD pin of the control chip U1 is connected to the negative electrode H- of the heating element, and the negative electrode H- of the heating element is grounded through the protection resistor R11.

[0044] In this embodiment, the control chip U1 monitors the divided voltage on the temperature monitoring resistor, calculates to obtain the current operating voltage of the heating element, further obtains the current temperature of the heating element, and then calculates information such as "the hot compress device is overheated, the temperature of the hot compress device is normal, the temperature of the hot compress device is too low" based on the current temperature of the heating element, so as to monitor the working state of the heating element; the first light-emitting control chip D1 is controlled by the control chip U1, and emits the first color light, the second color light, and the third color light (such as: red light, green light, blue light) respectively when receiving the instructions of the hot compress device being overheated, the temperature of the hot compress device being normal, and the temperature of the hot compress device being too low; according to the hardware conditions of the hot compress device, select the types and models of the light-emitting strip D2, the light-emitting control element, and the heating element drive switch, so as to save costs and improve the light-emitting effect and control performance of the device.

[0045] The above is only the specific implementation manner of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all of them should be covered by the protection scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A control circuit for a hot compress device, characterized in that: include: A control unit, a first light-emitting unit, a second light-emitting unit, and a heating unit; the first light-emitting unit, the second light-emitting unit, and the heating unit are respectively connected to the control unit, and the control unit issues a control instruction to control the working state of the first light-emitting unit, the second light-emitting unit, and the heating unit.

2. The control circuit of the hot compress device according to claim 1, characterized in that: The control unit includes a control chip U1; The first light-emitting unit includes: a first light-emitting control chip D1, a first pin of the first light-emitting control chip D1 is connected to a light-emitting working voltage Vcc1, a first color light pin R of the first light-emitting control chip D1 is connected to a first color light control pin PD of the control chip U1, a second color light pin G of the first light-emitting control chip D1 is connected to a second color light control pin PM of the control chip U1, and a third color light pin B of the first light-emitting control chip D1 is connected to a third color light control pin LED_R of the control chip U1.

3. The control circuit of the hot compress device according to claim 2, characterized in that: The voltage range of the light-emitting working voltage Vcc1 is 2-6V; the first light-emitting unit also includes: a light-emitting diode or an LED lamp bead.

4. The control circuit of the hot compress device according to claim 1, characterized in that: The control unit includes a control chip U1; the second light-emitting unit includes: a light strip D2 and a light-emitting control element Q1; the second light-emitting unit control pin L_EN of the control chip U1 is electrically connected to the light-emitting control element Q1 to control the on and off of the light-emitting control element Q1; one end of the light strip D2 is connected to the battery voltage B+, and the other end is connected to the light-emitting control element Q1; when the light-emitting control element Q1 is turned on, the light strip D2 emits light, and when the light-emitting control element Q1 is turned off, the light strip D2 is turned off.

5. The control circuit of the hot compress device according to claim 4, characterized in that: The voltage range of the battery voltage B+ is 2 to 10V; the light strip D2 is a combination of one or more of a light emitting diode light strip, a light emitting LED light strip, and a PCB light strip; the light control element Q1 is a transistor or a field effect tube.

6. The control circuit of the hot compress device according to claim 1, characterized in that: The control unit includes a control chip U1; the heating unit includes a heating plate and a heating plate driving unit.

7. The control circuit of the hot compress device according to claim 6, characterized in that: The heating plate driving unit includes a first driving switch Q2 and a second driving switch Q3; the heating plate control pin HOT_PWM pin of the control chip U1 is electrically connected to the first driving switch Q2 to control the on / off and opening degree of the first driving switch Q2; the first driving switch Q2 is electrically connected to the second driving switch Q3 to control the on / off and opening degree of the second driving switch Q3; the positive electrode H+ of the heating plate is connected to the heating plate working voltage Vcc2 through the second driving switch Q3.

8. The control circuit of the hot compress device according to claim 7, characterized in that: The heating plate driving switch Q2 is a transistor or a field effect tube; the temperature monitoring pin HOT_I_AD of the control chip U1 is connected to the negative electrode H- of the heating plate, and the negative electrode H- of the heating plate is grounded through the protection resistor R11.

9. The control circuit of the hot compress device according to claim 1, characterized in that: The control unit includes a control chip U1; the first light-emitting unit includes: a first light-emitting control chip D1, a first pin of the first light-emitting control chip D1 is connected to a light-emitting working voltage Vcc1, a first color light pin R pin of the first light-emitting control chip D1 is connected to a first color light control pin PD pin of the control chip U1, a second color light pin G pin of the first light-emitting control chip D1 is connected to a second color light control pin PM pin of the control chip U1, and a third color light pin B pin of the first light-emitting control chip D1 is connected to a third color light control pin LED_R pin of the control chip U1; the second light-emitting unit includes: a light strip D2, a light-emitting control element Q1; the second light-emitting unit control pin L_EN pin of the control chip U1 is electrically connected to the light-emitting control element Q1 The light strip D2 is connected to the battery voltage B+ at one end, and the other end is connected to the light control element Q1; when the light control element Q1 is turned on, the light strip D2 emits light, and when the light control element Q1 is turned off, the light strip D2 is extinguished; the heating unit comprises: a heating plate, a heating plate driving unit, a first driving switch Q2 and a second driving switch Q3 of the heating plate driving unit; the heating plate control pin HOT_PWM of the control chip U1 is electrically connected to the first driving switch Q2 to control the on / off and opening degree of the first driving switch Q2; the first driving switch Q2 is electrically connected to the second driving switch Q3 to control the on / off and opening degree of the second driving switch Q3; the positive electrode H+ of the heating plate is connected to the heating plate working voltage Vcc2 through the second driving switch Q3.

10. The control circuit of the hot compress device according to claim 9, characterized in that: The voltage range of the light-emitting working voltage Vcc1 is 2 to 6V; the first light-emitting unit also includes: a light-emitting diode or an LED lamp bead; the voltage range of the battery voltage B+ is 2 to 10V; the light-emitting light strip D2 is a combination of one or more of a light-emitting diode light strip, a light-emitting LED light strip, and a PCB light strip; the light-emitting control element Q1 is a transistor or a field-effect tube; the first drive switch Q2 and the second drive switch Q3 are a transistor or a field-effect tube; the temperature monitoring pin HOT_I_AD of the control chip U1 is connected to the negative electrode H- of the heating plate, and the negative electrode H- of the heating plate is grounded through the protection resistor R11.

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