A face slimming instrument with intelligent temperature control function

Abstract

The utility model relates to a kind of face slimming instrument with intelligent temperature control function, including left half main body and right half main body;Left half main body and right half main body are equipped with metal sheet, provide micro-current and high-frequency radio frequency signal to metal sheet Conducting module, temperature detection module for detecting the temperature of metal sheet and temperature control module for actively cooling the metal sheet;The face slimming instrument is related to clever, in the process of metal sheet electrotherapy massage, if temperature detection module detects that the temperature of metal sheet exceeds safety threshold, main control chip will immediately instruct temperature control module to start cooling metal sheet, until the temperature is reduced to the preset safety range and stop, can avoid the risk of skin red and scalding possibly caused by the temperature of metal sheet being too high due to current or radio frequency energy, greatly improve the security of use;Through active cooling processing, can prevent metal sheet from overheating during use, reduce the burning sensation and discomfort of user when using, comfortable to use.

Description

Technical Field

[0001] This utility model relates to the field of beauty equipment technology, and more specifically, to a face slimming device with intelligent temperature control function. Background Technology

[0002] With the improvement of people's living standards and increased attention to personal image, facial beauty care has become an increasingly important part of daily life. Among them, facial contouring, especially for the "large face" problem caused by facial fat accumulation or muscle relaxation, has spurred the demand for various home beauty devices, of which facial slimming devices are one.

[0003] There are many types of facial slimming devices available, and their working principles mainly include microcurrent stimulation, radio frequency heating, ultrasound induction, and massage lifting. Microcurrent facial slimming devices stimulate facial muscles with low-frequency currents, promoting muscle movement and blood circulation; radio frequency facial slimming devices utilize the thermal effect generated by high-frequency electromagnetic waves to penetrate deep into subcutaneous tissue, promoting collagen contraction and regeneration, thereby achieving the effects of tightening the skin and reducing fat.

[0004] However, existing facial slimming devices still have some shortcomings. For example, some devices fail to effectively control the temperature of the contact surface when providing current or radio frequency energy. Excessive temperature not only poses a risk of burns to users with thin skin, causing redness and burning sensations and reducing user comfort, but it may also lead to excessive moisture loss from the skin surface and potentially damage the superficial skin structure, affecting the final cosmetic effect.

[0005] Therefore, the market urgently needs a new type of face slimming device that can intelligently control temperature, improve safety and comfort, and fit well to the contours of the face. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a face slimming device with intelligent temperature control function, addressing the above-mentioned deficiencies of the prior art.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a face slimming device with intelligent temperature control function, comprising a left half-body and a right half-body; the left half-body and the right half-body are rotatably connected by a rotating assembly; each of the left half-body and the right half-body is provided with an installation cavity; an arc-shaped metal sheet is provided on the side surface of the left half-body and the right half-body facing the user's face; each of the two installation cavities is provided with a main control chip, a conductive module that provides microcurrent and high-frequency radio frequency signals to the metal sheet, a temperature detection module for detecting the temperature of the metal sheet, and a temperature control module for actively cooling the metal sheet; the conductive module, the temperature detection module, and the temperature control module are all electrically connected to and controlled by the main control chip;

[0008] The facial slimming device of this utility model includes a conductive module comprising a DC power supply module, a constant current control circuit, and a radio frequency generation module connected in sequence.

[0009] The output terminal of the DC power supply module is directly coupled to the input terminal of the constant current control circuit;

[0010] The output terminal of the constant current control circuit is connected to the power input terminal of the radio frequency generator module;

[0011] The signal output terminal of the radio frequency generation module is electrically connected to the metal sheet;

[0012] The facial slimming device of this utility model includes a unidirectional conducting element between the constant current control circuit and the radio frequency generation module. The unidirectional conducting element is a diode, with its anode connected to the output terminal of the constant current control circuit and its cathode connected to the power input terminal of the radio frequency generation module.

[0013] The facial slimming device of this utility model includes a rotating assembly comprising a central connecting block; the front surface of the central connecting block is arc-shaped; the first end of the left half of the main body is fixedly connected to the central connecting block; the middle of the first end of the left half of the main body is rotatably connected to the middle of the first end of the right half of the main body; and the two outer sides of the first end of the right half of the main body are respectively rotatably connected to the two outer sides of the central connecting block.

[0014] In the face slimming device of this utility model, the rotational connection between the right half of the main body and the left half of the main body, and the rotational connection between the right half of the main body and the middle connecting block are all connected through the same rotating shaft.

[0015] The face slimming device of this utility model includes a temperature detection module comprising at least one temperature sensor disposed on the inner side of the metal sheet; if multiple temperature sensors are provided, at least one temperature sensor detects the center temperature of the metal sheet, and the other multiple temperature sensors detect the outer temperature of the metal sheet.

[0016] The facial slimming device of this utility model, wherein the temperature control module includes:

[0017] A semiconductor cooling chip, wherein the cold end face is thermally connected to the back side of the metal sheet;

[0018] A graphene thermal conductive layer is provided on the hot end face of the semiconductor cooling chip, and a heat dissipation channel is provided on the graphene thermal conductive layer; the air outlet of the heat dissipation channel faces the semiconductor cooling chip.

[0019] A fan is fixed to the surface of the left half of the main body or the right half of the main body on the side facing away from the user's face; the fan is located at the air inlet of the heat dissipation channel and blows air into the heat dissipation channel;

[0020] The facial slimming device of this utility model includes a thermally conductive silicone grease layer between the semiconductor cooling chip and the metal sheet, the thickness of which is 0.1-0.3mm; the graphene thermally conductive layer forms a seamless contact with the hot end face of the semiconductor cooling chip through laser welding.

[0021] The face slimming device of this utility model is further provided with a voice control module electrically connected to the main control chip in the mounting cavity;

[0022] The face slimming device of this utility model, wherein the metal sheet is made of stainless steel, and its outer surface in contact with the user's face is plated with a titanium layer with a thickness of 0.2μm;

[0023] The face slimming device of this utility model further includes an adjustable strap connecting the second end of the left half of the main body and the second end of the right half of the main body.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. This invention incorporates temperature detection and control modules within the left and right halves of the main body, controlled by a main control chip. During the electrotherapy massage of the metal sheet, if the temperature detection module detects that the metal sheet temperature exceeds a safety threshold (e.g., 40°C), the main control chip immediately instructs the temperature control module to cool the metal sheet until the temperature is reduced to a preset safe range (e.g., 30°C). This intelligent temperature control mechanism effectively avoids the risk of skin redness and burning caused by excessively high metal sheet temperatures due to current or radio frequency energy, greatly improving safety. Active cooling prevents overheating of the metal sheet during use, reducing the burning sensation and discomfort experienced by the user, making the entire face-slimming process more comfortable and enjoyable.

[0026] 2. A stable and suitable temperature helps radiofrequency energy or microcurrent penetrate the target skin layer more effectively, potentially improving the efficiency of collagen contraction and regeneration, thus possibly achieving better face-slimming and firming effects. At the same time, avoiding potential damage to the skin barrier from overheating helps maintain healthy skin and facilitates long-term care.

[0027] 3. The design features two semi-main bodies, left and right, that can be connected by rotating components. This allows the face slimming device to be flexibly adjusted according to different users' facial contours and different usage angles, better conforming to facial curves and ensuring that energy can be applied evenly and effectively to the target area, thus improving the applicability of the device and the consistency of treatment effects. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a structural schematic diagram of a facial slimming device with intelligent temperature control function according to a preferred embodiment of the present invention;

[0030] Figure 2 This is a three-dimensional exploded view of the face slimming device in a preferred embodiment of this utility model;

[0031] Figure 3 This is a circuit diagram of the conductive module 17 in the face slimming device in this embodiment;

[0032] Figure 4 This is a schematic diagram of the temperature control module 18 in the face slimming device in this embodiment. Detailed Implementation

[0033] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0036] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0038] A preferred embodiment of this utility model provides a facial slimming device with intelligent temperature control function, such as... Figure 1-4 As shown, it includes a left half-body 11 and a right half-body 12; the left half-body 11 and the right half-body 12 are rotatably connected by a rotating assembly 13; the user can adjust the angle between the left half-body 11 and the right half-body 12 according to their face shape, so that the left half-body 11 and the right half-body 12 can adapt to different angles and curvatures of facial contours, improving the comfort and coverage of use; each of the left half-body 11 and the right half-body 12 is provided with a mounting cavity 14 for accommodating various electronic components; the surface of the left half-body 11 and the right half-body 12 facing the user's face is fixedly covered with a biocompatible silicone layer. The device includes an arc-shaped metal sheet 15; a clearance hole is provided on the biocompatible silicone layer to avoid the arc-shaped metal sheet 15, and the outer surface of the arc-shaped metal sheet 15 protrudes from the biocompatible silicone layer to facilitate direct contact with the user's face; each of the two mounting cavities 14 is equipped with a main control chip 16, a conductive module 17 that provides microcurrent and high-frequency radio frequency signals to the metal sheet 15, a temperature detection module for detecting the temperature of the metal sheet 15, and a temperature control module 18 for actively cooling the metal sheet 15; the conductive module 17, the temperature detection module, and the temperature control module 18 are all electrically connected to and controlled by the main control chip 16;

[0039] The main control chip is the "brain" of the face slimming device, responsible for receiving information, processing data, issuing instructions, and controlling the operation of all other modules. In this embodiment, the main control chip can be the STM32F103 in the prior art. Its circuit connection and control principle are conventional technical means in the field and do not involve the improvement of computer programs.

[0040] Furthermore, the conductive module is responsible for generating and transmitting "microcurrents" and "high-frequency radio frequency signals" to the metal sheet. The microcurrents are used for muscle stimulation, while the radio frequency signals are typically used to heat the deep layers of the skin to promote collagen regeneration. In this embodiment, the microcurrent uses a low-frequency pulse current of 0.1-1 mA, which can stimulate facial motor neurons, triggering rhythmic muscle contractions (frequency 5-20 Hz), effectively exercising deep facial facial muscles. This microcurrent can enhance cell membrane permeability, accelerate ATP synthesis, and promote lymphatic circulation to metabolize excess facial water. The high-frequency radio frequency uses a 0.5-1.5 MHz high-frequency alternating electric field to cause high-speed rotation and friction of polar molecules in the dermis, instantly generating controllable heat of 42-45°C, thereby activating fibroblast proliferation, promoting type I / III collagen remodeling, and increasing skin elasticity. It is worth noting that the principle of transmitting the "microcurrents" and "high-frequency radio frequency signals" to the metal sheet is a conventional technique in this field. The temperature detection module monitors the temperature of the metal sheet (the side in contact with the skin) in real time; the temperature control module, according to instructions from the main control chip, performs "active cooling" on the metal sheet. The purpose is to prevent excessive heat from burning the skin or to maintain an ideal temperature in specific treatment modes.

[0041] The intelligent temperature control achieved through the coordinated operation of these multiple modules prevents the metal sheet from overheating during use, reducing the burning sensation and discomfort experienced by the user, making the entire face-slimming process more comfortable and enjoyable. Furthermore, a stable and suitable temperature helps the radiofrequency energy or microcurrent penetrate the target skin layer more effectively, potentially improving the efficiency of collagen contraction and regeneration, thus achieving better face-slimming and firming effects. Simultaneously, avoiding potential damage to the skin barrier from overheating helps maintain healthy skin and facilitates long-term care.

[0042] This innovative facial slimming device features an intelligent temperature control design. It incorporates temperature detection and control modules within the left and right halves of the main body, both controlled by a main control chip. During the electrotherapy massage with the metal sheet, if the temperature detection module detects that the metal sheet temperature exceeds a safety threshold (e.g., 40°C), the main control chip immediately instructs the temperature control module to cool the metal sheet until the temperature is reduced to a preset safe range (e.g., 30°C). This intelligent temperature control mechanism effectively avoids the risk of skin redness and burning caused by excessively high metal sheet temperatures due to current or radio frequency energy, significantly improving safety during use.

[0043] Furthermore, the conductive module 17 includes a DC power supply module 171, a constant current control circuit 172, and an RF generator module 173 connected in sequence. The DC power supply module 171 uses the BQ25601 chip from the prior art, outputting an adjustable DC current of 0.1-1mA. The RF generator module 173 uses the Si4463 chip from the prior art. The addition of a constant current control circuit between the power supply module and the RF module further ensures that the DC bias current supplied to the RF module and even the final metal sheet is stable and constant, which is beneficial to the normal operation and stability of the RF module.

[0044] The output terminal of the DC power supply module 171 is directly coupled to the input terminal of the constant current control circuit 172;

[0045] The output of the constant current control circuit 172 is connected to the power input of the radio frequency generator module 173;

[0046] The signal output terminal of the radio frequency generation module 173 is electrically connected to the metal plate 15.

[0047] By combining stable DC bias with efficient radio frequency generation, the metal sheet 15 can stably output the required microcurrent stimulation and radio frequency energy. The two may work synergistically to achieve a better face-slimming effect (microcurrent stimulation of muscles + radio frequency heating to tighten skin).

[0048] In this embodiment, the RF generation module 173 generates high-frequency RF signals during operation. Without isolation measures, these high-frequency signals may be reverse-propagated through the constant current control circuit 172, and may even affect the upstream DC power supply module 171. To solve this problem, a one-way conducting element 174 is provided between the constant current control circuit 172 and the RF generation module 173. The one-way conducting element 174 is a diode, with its anode connected to the output terminal of the constant current control circuit 172 and its cathode connected to the power input terminal of the RF generation module 173.

[0049] A diode exhibits unidirectional conductivity. This diode provides physical and electrical isolation between the DC power supply path and the radio frequency (RF) signal path, allowing current to flow only from the anode to the cathode. The DC current flows from the constant current control circuit to power the RF module, effectively preventing the high-frequency AC signals (or their harmonics) generated by the RF generator from flowing back into the constant current control circuit. This protects the DC power supply and constant current control circuit from interference from high-frequency RF signals, ensuring the purity and stability of the DC power supply and avoiding potential risks of circuit instability, performance degradation, or component damage.

[0050] Furthermore, the rotating assembly 13 includes a central connecting block 131; the front surface of the central connecting block 131 is arc-shaped; when the left half of the main body 11 and the right half of the main body 12 are rotated into position, the arc-shaped surface of the central connecting block is more in line with the movement trajectory of the left half of the main body 11 and the right half of the main body 12, making rotation convenient.

[0051] The first end of the left half of the main body 11 is fixedly connected to the middle connecting block 131; the middle part of the first end of the left half of the main body 11 is rotatably connected to the middle part of the first end of the right half of the main body 12; the two outer sides of the first end of the right half of the main body 12 are respectively rotatably connected to the two outer sides of the middle connecting block 131.

[0052] The rotational connection between the right half of the main body 12 and the left half of the main body 11, and the rotational connection between the right half of the main body 12 and the middle connecting block 131 are all connected by the same rotating shaft 132.

[0053] This rotating connection method allows the right half of the main body 12 to not only rotate relative to the left half of the main body 11 in the middle, but also to form a linkage with the middle connecting block 131 through the two outer connection points. This helps to:

[0054] 1. Improved fit: When the face slimming device needs to adapt to different angles of the face, the two outer rotating connections allow the right half of the main body to rotate while its outer side can also be adjusted to a certain angle, thus fitting the curvature of the user's face more closely and flexibly, especially in irregular areas such as the jawline.

[0055] 2. Increased stability: The outer rotating connection increases structural constraints, making the relative positions of the two half-body parts more stable during rotation, less prone to shaking or misalignment, thus improving safety and comfort during use.

[0056] In summary, by using a central connecting block and multiple rotating connecting points, not only is the basic rotation function achieved, but more importantly, it provides greater flexibility, better facial fit, and stronger structural stability, enabling the face slimming device to act more comfortably and effectively on facial areas of different shapes and angles.

[0057] Furthermore, the temperature detection module includes at least one temperature sensor 19 disposed inside the metal sheet 15. Placing the sensor inside the metal sheet, which directly contacts the skin, allows for the most direct and rapid reflection of the actual temperature at the interface between the metal sheet and the skin. If multiple temperature sensors 19 are provided, at least one temperature sensor 19 detects the center temperature of the metal sheet 15, while the other multiple temperature sensors 19 detect the peripheral temperature of the metal sheet 15. In this embodiment, the temperature sensor 19 is a DS18B20 sensor. By monitoring temperature differences at different points, the system can actively adjust (e.g., adjust the radio frequency power, current, or activate cooling in specific areas) to strive for a more uniform temperature at the interface between the metal sheet and the skin. A uniform temperature distribution generally means a more comfortable user experience and a more consistent and effective treatment effect; it helps improve the comfort (avoiding discomfort caused by local overheating) and effectiveness (ensuring that radio frequency energy is applied evenly to the target area) of the facial slimming device.

[0058] Furthermore, the temperature control module 18 includes:

[0059] A thermoelectric cooler 181 has its cold end thermally connected to the back of a metal sheet 15. This thermoelectric cooler 181 can be a TEC1-12706 thermoelectric cooler, a common type that utilizes the Peltier effect, cooling at one end (cold end) and heating at the other (hot end) when energized. By directly connecting its cold end to the back of the metal sheet 15, heat can be quickly and directly absorbed from the metal sheet, achieving active and precise cooling. This cooling method has a fast response time, and the cooling power can be adjusted by controlling the current. Its controllability allows the intelligent temperature control system to precisely maintain the temperature within a preset range (e.g., starting above 40 degrees Celsius and stopping at 30 degrees Celsius as described by the user), achieving precise intelligent temperature control.

[0060] The cooling efficiency of a thermoelectric cooler largely depends on the effective heat dissipation of its hot end. If the hot end temperature is too high, the cold end temperature will also rise, reducing the cooling effect and potentially damaging the cooler. To address this issue, the temperature control module 18 further includes:

[0061] The graphene thermal conductive layer 182 covers the hot end face of the semiconductor cooling chip 181, which can quickly and evenly conduct the heat generated at the hot end away, prevent heat from accumulating inside the cooling chip and improve cooling efficiency; and the graphene thermal conductive layer 182 is provided with heat dissipation channels 1821, which provides a clear path for heat to be discharged; the air outlet of the heat dissipation channel 1821 faces the semiconductor cooling chip 181.

[0062] The fan 183 is a micro turbine fan in the prior art, whose speed is controlled by a PWM signal and the adjustment range is 3000-6000rpm. The fan 183 is fixed on the surface of the left half of the main body 11 or the right half of the main body 12 facing away from the user's face. The fan 183 is located at the air inlet of the heat dissipation channel 1821 and blows air into the heat dissipation channel 1821. The fan forces the cold air into the heat dissipation channel, accelerates the convection and dissipation of heat, and enables the blown air to effectively remove the heat from the graphene thermal conductive layer.

[0063] Furthermore, a thermally conductive silicone grease layer (not shown in the figure) with a thickness of 0.1-0.3 mm is filled between the thermoelectric cooler 181 and the metal sheet 15. The graphene thermally conductive layer 182 forms a seamless contact with the hot end face of the thermoelectric cooler 181 through laser welding. By filling with the thermally conductive silicone grease layer, the heat transfer efficiency from the metal sheet 15 to the cold end of the thermoelectric cooler 181 is greatly improved, enabling the cooler to absorb the heat from the metal sheet more quickly and effectively. This improves the response speed and cooling effect of the entire cooling system, and enhances the cooling speed and temperature control accuracy.

[0064] In this embodiment, the face slimming device also includes a voice control module (not shown in the figure) disposed in the installation cavity. The voice control module (not shown in the figure) is electrically connected to the main control chip 16, enabling the face slimming device to have voice control functionality. Optionally, the voice control module can adopt the existing SYN7318+LD3320 dual-chip architecture, where SYN7318 is responsible for environmental noise reduction and remote interaction, and LD3320 is responsible for local rapid command response. It is worth noting that this voice control method is a common existing technology in the field. The face slimming device can be controlled through existing control principles, such as starting or pausing the electrotherapy massage mode, or starting or pausing the cooling mode. This solution does not involve any improvement to the computer program. For example, by first saying a preset wake-up word (such as "Xiaomei"), then inputting the function command to avoid false triggering caused by environmental noise, and then saying a preset keyword (such as "start massage" or "pause massage"), non-contact control of the face slimming device's working mode, energy intensity, safety protection, and other core functions can be achieved. Users can switch the face slimming device's state through natural language commands.

[0065] Furthermore, the metal sheet 15 is made of stainless steel, and its outer surface, which comes into contact with the user's face, is plated with a 0.2μm thick titanium layer. Direct skin contact with the titanium layer greatly reduces the risk of allergies or irritation.

[0066] Furthermore, the facial slimming device also includes an adjustable strap 20 connecting the second end of the left half of the main body 11 and the second end of the right half of the main body 12. The strap securely fixes both halves of the main body to the face, preventing displacement or loosening due to hand movement or facial muscle activity during use. This ensures the facial slimming device maintains the correct position throughout the entire usage cycle, improving the stability and consistency of the treatment.

[0067] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A facial slimming device with intelligent temperature control function, characterized in that, It includes a left half and a right half; the left half and the right half are rotatably connected by a rotating assembly; each of the left half and the right half has a mounting cavity; the surface of the left half and the right half facing the user's face is provided with an arc-shaped metal sheet; each of the two mounting cavities is provided with a main control chip, a conductive module that provides microcurrent and high-frequency radio frequency signals to the metal sheet, a temperature detection module for detecting the temperature of the metal sheet, and a temperature control module for actively cooling the metal sheet; The conductive module, the temperature detection module, and the temperature control module are all electrically connected to and controlled by the main control chip.

2. The face slimming device according to claim 1, characterized in that, The conductive module includes a DC power supply module, a constant current control circuit, and a radio frequency generation module connected in sequence, wherein: The output terminal of the DC power supply module is directly coupled to the input terminal of the constant current control circuit; The output terminal of the constant current control circuit is connected to the power input terminal of the radio frequency generator module; The signal output terminal of the radio frequency generation module is electrically connected to the metal sheet.

3. The face slimming device according to claim 2, characterized in that, A unidirectional conducting element is provided between the constant current control circuit and the radio frequency generation module; the unidirectional conducting element is a diode, whose anode is connected to the output terminal of the constant current control circuit and whose cathode is connected to the power input terminal of the radio frequency generation module.

4. The facial slimming device according to any one of claims 1-3, characterized in that, The rotating assembly includes a central connecting block; the front surface of the central connecting block is arc-shaped; the first end of the left half of the main body is fixedly connected to the central connecting block; the middle of the first end of the left half of the main body is rotatably connected to the middle of the first end of the right half of the main body; the two outer sides of the first end of the right half of the main body are respectively rotatably connected to the two outer sides of the central connecting block.

5. The face slimming device according to claim 4, characterized in that, The rotational connection between the right half of the main body and the left half of the main body, and the rotational connection between the right half of the main body and the middle connecting block, are all connected by the same rotating shaft.

6. The face slimming device according to claim 1, characterized in that, The temperature detection module includes at least one temperature sensor disposed on the inner side of the metal sheet; if multiple temperature sensors are provided, at least one temperature sensor detects the center temperature of the metal sheet, and the other multiple temperature sensors detect the outer temperature of the metal sheet.

7. The face slimming device according to claim 1, characterized in that, The temperature control module includes: A semiconductor cooling chip, wherein the cold end face is thermally connected to the back side of the metal sheet; A graphene thermal conductive layer is provided on the hot end face of the semiconductor cooling chip, and a heat dissipation channel is provided on the graphene thermal conductive layer; the air outlet of the heat dissipation channel faces the semiconductor cooling chip. A fan is fixed to the surface of the left half of the main body or the right half of the main body on the side facing away from the user's face; the fan is located at the air inlet of the heat dissipation channel and blows air into the heat dissipation channel.

8. The face slimming device according to claim 7, characterized in that, A thermally conductive silicone grease layer with a thickness of 0.1-0.3 mm is filled between the semiconductor cooling chip and the metal sheet; the graphene thermally conductive layer forms a seamless contact with the hot end face of the semiconductor cooling chip through laser welding.

9. The face slimming device according to claim 1, characterized in that, The mounting cavity is also equipped with a voice control module that is electrically connected to the main control chip.

10. The face slimming device according to claim 1, characterized in that, The face slimming device also includes an adjustable strap connecting the second end of the left half of the main body and the second end of the right half of the main body.

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