Intelligent hair dryer with distance detection function

Abstract

The utility model discloses an intelligent hair drier with a distance detection function, which relates to the technical field of hair driers and comprises a hair dryer and a handle connected with the hair dryer, a control unit is arranged in the hair dryer and / or the handle, a distance measuring module is arranged on the handle or at the joint of the hair dryer and the handle, and the distance measuring module is connected with the control unit. The distance measuring module is electrically connected with the control unit; the distance measuring module is moved to the handle or the connection position of the air duct and the handle from the air outlet position of the air duct easily affected by high temperature, a large amount of heat generated when the air duct works is effectively avoided, interference of the high temperature on electronic elements in the distance measuring module is greatly reduced, stable operation of the distance measuring module is ensured, the distance detection precision is greatly improved, and the working efficiency is improved. The reliability of the distance detection function of the hair dryer is guaranteed, a user can obtain more accurate distance feedback, and therefore more scientific hair care is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, specifically to an intelligent hair dryer with distance detection function. Background Technology

[0002] In the hair care industry, hair dryers are one of the most commonly used appliances in people's daily lives. Traditional hair dryers have relatively simple functions, mainly drying hair through simple airflow and temperature adjustments. However, in actual use, the distance between the hair dryer and the hair plays a crucial role in the hair care effect and drying efficiency.

[0003] When a hairdryer is held too close to the hair, the high-temperature airflow concentrates on a specific area of ​​the hair in a short period, easily leading to excessive moisture loss and damage to the hair cuticle. This can result in dry, frizzy, split ends, and even breakage. Furthermore, holding the hairdryer too close can pose a risk of burns to the scalp, affecting scalp health. On the other hand, while holding the hairdryer too far away reduces the risk of damage to the hair and scalp, significant loss of airflow and heat during transmission makes it less effective at drying the hair, resulting in a much longer drying time—a waste of both time and energy.

[0004] In response, hair dryers equipped with distance sensors have emerged. These sensors can accurately detect the distance between the hair dryer and the hair, and automatically adjust the distance to prevent damage to the hair due to being too close or reduced drying efficiency due to being too far away, thus greatly improving the user experience and hair care effect.

[0005] In these types of hair dryers, the installation position of the distance sensor is crucial. Many designs place the distance sensor at the corresponding air outlet position on the blower casing (such as the middle or outer ring of the casing), which allows for the most direct and accurate detection of the real-time distance between the hair dryer and the hair. For example, Chinese patent CN113040498A, entitled "A Hair Dryer," uses a distance sensor to detect the distance between the main body's first air outlet and the human body being tested. The control board can then control the operating status of the heating element and the fan assembly based on the distance signal from the distance sensor.

[0006] However, the hair dryer, as the heat-generating component, generates a significant amount of heat during operation. When the distance sensor is located at the air outlet of the hair dryer, it is highly susceptible to the effects of the high-temperature environment. On one hand, high temperatures may cause changes in the performance of the sensor's internal components, such as alterations in the resistance and capacitance values ​​of electronic components, leading to a substantial decrease in the sensor's detection accuracy and its inability to accurately reflect the actual distance between the hair dryer and the hair. On the other hand, prolonged exposure to high temperatures may even cause the sensor to malfunction completely, rendering it unable to function properly. This not only severely impacts the reliability of the hair dryer's distance detection function but also limits the product's effectiveness in practical use, necessitating a more sophisticated technical solution to address these issues. Utility Model Content

[0007] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0008] A smart hair dryer with distance detection function includes a hair shaft and a connected handle. A control unit is provided in the hair shaft and / or the handle. A distance measuring module is provided on the handle or at the connection between the hair shaft and the handle. The distance measuring module is electrically connected to the control unit.

[0009] As a further aspect of this utility model: the detection direction of the ranging module is consistent with the air outlet direction of the air duct.

[0010] As a further embodiment of this utility model: the air duct is rotatably connected to the handle, and the distance measuring module is disposed at the rotatable connection between the air duct and the handle;

[0011] The ranging module can rotate along with the air duct so that the detection direction of the ranging module is always consistent with the air outlet direction of the air duct.

[0012] As a further embodiment of this utility model: a rotating connector is provided between the air duct and the handle, one end of the rotating connector is fixedly connected to the air duct, and the other end of the rotating connector is rotatably connected to the handle;

[0013] The ranging module is fixedly connected to the rotating connector.

[0014] As a further embodiment of this utility model: the rotating connector includes a fixed end corresponding to the air duct and a rotating shaft end corresponding to the handle. The handle has an opening on the side facing the air outlet of the air duct that is movable to the rotating shaft end. The ranging module is fixedly connected to the rotating shaft end and to the position corresponding to the opening.

[0015] As a further embodiment of this utility model: the rotating shaft end is provided with a mounting position for accommodating the ranging module, and a window communicating with the mounting position is opened along the surface of the rotating shaft end, with a transparent component corresponding to the ranging module connected to the window.

[0016] As a further aspect of this utility model: within the allowable angle range of the air duct's rotation relative to the handle, the rotating shaft end of the rotating connector is at least partially in an open position, so that the detection orientation of the ranging module always corresponds to the air outlet orientation of the air duct.

[0017] As a further embodiment of this utility model, the distance sensor is a laser rangefinder or an infrared rangefinder.

[0018] As a further embodiment of this utility model: the handle is provided with a groove corresponding to its connection with the air duct, which is matched with the rotating shaft end of the rotating connector, and the opening is provided on one side of the groove.

[0019] As a further embodiment of this utility model: a temperature sensing element is provided inside the air duct, and the temperature sensing element is electrically connected to the control unit;

[0020] The control unit dynamically adjusts the outlet temperature of the air duct based on the distance information detected by the ranging module and the temperature information detected by the temperature sensing element.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] Moving the distance measuring module from the air outlet of the hair dryer, which is susceptible to high temperatures, to the handle or the connection between the hair dryer and the handle effectively avoids the large amount of heat generated during hair dryer operation. This greatly reduces the interference of high temperatures on the internal electronic components of the distance measuring module, ensuring the stable operation of the distance measuring module, significantly improving the distance detection accuracy, ensuring the reliability of the hair dryer's distance detection function, and allowing users to obtain more accurate distance feedback, thereby achieving more scientific hair care.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the rotating connector and the ranging module in this utility model.

[0027] Figure 3 This is an exploded structural diagram of the rotating connector and the ranging module in this utility model.

[0028] Figure 4 This is a schematic diagram of the handle structure in this utility model;

[0029] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0030] The reference numerals and names in the figure are as follows:

[0031] 1. Air duct; 2. Handle; 3. Control unit; 4. Distance measuring module; 5. Rotating connector; 6. Fixed end; 7. Rotating shaft end; 8. Opening; 9. Mounting position; 10. Window; 11. Transparent part; 12. Slot; 13. Air outlet. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-5 In this embodiment of the present invention, a smart hair dryer with distance detection function includes a blower 1 and a handle 2 connected thereto. A control unit 3 is provided in the blower 1 and / or the handle 2. A distance measuring module 4 is provided on the handle 2 or at the connection between the blower 1 and the handle 2. The distance measuring module 4 is electrically connected to the control unit 3.

[0034] In this utility model, the distance measuring module 4 is installed on the handle 2 or at the connection between the hair dryer 1 and the handle 2. When the user uses the hair dryer, the distance measuring module 4 will work continuously. Using its internal sensing element, it will detect the distance between the hair dryer and the hair in real time by emitting and receiving specific signals (such as infrared signals, ultrasonic signals, etc.). Once the distance measuring module 4 acquires the distance data, it will immediately convert it into an electrical signal and transmit it to the control unit 3 set in the hair dryer 1 and / or handle 2 through the electrical connection line.

[0035] As the "brain" of the entire smart hair dryer, the control unit 3 analyzes and processes the distance signal received from the ranging module 4 according to the pre-set program algorithm and logic rules. For example, when the distance is detected to be too close, the control unit 3 sends a command to the heating component inside the hair dryer to reduce the heating power to avoid high temperature damage to the hair, or sends a command to the heating component and fan component inside the hair dryer to reduce the heating power to avoid high temperature damage to the hair, while appropriately reducing the wind speed to prevent the wind force from being too concentrated and impacting the hair. If the distance is detected to be too far, the control unit 3 will increase the heating power, or increase the heating power and increase the wind speed to improve the drying efficiency.

[0036] Moving the distance measuring module 4 from the air outlet 13 of the blower 1, which is susceptible to high temperatures, to the handle 2 or the connection point between the blower 1 and the handle 2 effectively avoids the large amount of heat generated when the blower 1 is working. This greatly reduces the interference of high temperatures on the internal electronic components of the distance measuring module 4, ensures the stable operation of the distance measuring module 4, significantly improves the distance detection accuracy, guarantees the reliability of the hair dryer's distance detection function, and allows users to obtain more accurate distance feedback, thereby achieving more scientific hair care.

[0037] In this embodiment of the present invention, the detection direction of the ranging module 4 is consistent with the air outlet direction of the air duct 1.

[0038] Based on considerations of the actual usage scenarios of hair dryers, the detection signals (such as infrared light, ultrasonic waves, etc.) emitted by the ranging module 4 can propagate in a straight line along the direction of airflow from the blower 1. In this way, when the hair dryer is working, the airflow path blown out by the blower 1 coincides with the path of the ranging module 4 detecting the distance to the hair. This allows the ranging module 4 to accurately detect the distance to the hair that is within the range of the hot air. The principle is similar to blowing out hot air in a straight channel while simultaneously measuring the distance between the target (hair) and the hair dryer, ensuring the timeliness and accuracy of the detection.

[0039] The airflow direction of the hairdryer 1 determines the area where the hot air acts on the hair. By keeping the detection direction of the ranging module 4 consistent with this direction, it can be ensured that the detected distance is the actual distance between the hair part being blown by the hot air and the hairdryer. This effectively avoids the detection of the hair part that is not being treated by the hot air due to deviation in the detection direction. This enables accurate control of the distance of the hair in the area where the hot air acts, providing a reliable basis for subsequent distance-based intelligent control and greatly improving the matching degree between distance detection and actual blow-drying care scenarios.

[0040] When the detection direction is consistent with the air outlet direction, once the distance between the hair and the hair dryer changes, the ranging module 4 can capture this change immediately and quickly transmit the distance data to the control unit 3. Based on timely and accurate distance information, the control unit 3 can quickly adjust the heating component or the heating component and the fan component. For example, when the hair suddenly gets close to the hair dryer and the distance shortens, the ranging module 4 immediately senses it and transmits a signal. The control unit 3 quickly reduces the heating power and wind speed to prevent the hair from being damaged due to the close distance. This greatly improves the timeliness and effectiveness of intelligent control and comprehensively ensures the safety and efficiency of the hair care process.

[0041] In this embodiment of the utility model, the air duct 1 is rotatably connected to the handle 2, and the distance measuring module 4 is disposed at the rotatable connection between the air duct 1 and the handle 2.

[0042] The ranging module 4 can rotate along with the rotation of the air duct 1, so that the detection direction of the ranging module 4 is always consistent with the air outlet direction of the air duct 1.

[0043] Because the nozzle 1 and handle 2 are rotatable, users can flexibly change the angle of the nozzle 1 when using the hair dryer for complex hair styling. The distance measuring module 4 rotates with the nozzle 1, ensuring that the distance between the hair and the hair dryer in the direction of the airflow from the nozzle 1 can be continuously and accurately detected regardless of the angle of the nozzle 1. This ensures that the distance data detected in various usage scenarios is for the hair part that is receiving hot air, thus effectively avoiding the problem of the detection area and the blowing area becoming disconnected due to the change of the angle of the nozzle 1. This ensures that the distance-based intelligent control always acts on the actual hair position, improves the adaptability of the smart hair dryer to different styling operations, and significantly enhances the accuracy and effectiveness of distance detection and intelligent control.

[0044] In this embodiment of the utility model, a rotating connector 5 is provided between the air duct 1 and the handle 2. One end of the rotating connector 5 is fixedly connected to the air duct 1, and the other end of the rotating connector 5 is rotatably connected to the handle 2.

[0045] The ranging module 4 is fixedly connected to the rotating connector 5.

[0046] One end of the rotating connector 5 is fixedly connected to the air duct 1 to ensure that the two become a stable whole. The rotation of the air duct 1 will inevitably drive this end of the rotating connector 5 to rotate synchronously. The other end is connected to the handle 2 in a rotating manner, giving the air duct 1 the ability to rotate flexibly relative to the handle 2. The ranging module 4 is fixedly connected to the rotating connector 5. With the help of the transmission action of the rotating connector 5, when the air duct 1 rotates, the rotating connector 5 drives the ranging module 4 to rotate together.

[0047] By fixing the distance measuring module 4 to the rotating connector 5, and utilizing the synchronous transmission of the rotation of the blower 1 by the rotating connector 5, the stability of the distance measuring module 4 is ensured during complex use. When the blower 1 rotates, the distance measuring module 4 will not shake or shift due to its own unstable installation, thus continuously and accurately detecting the distance between the hair dryer and the hair. For example, during long-term, multi-angle hair styling operations, the distance measuring module 4 can work stably, providing accurate distance data to the control unit 3, ensuring the reliability of intelligent control, and thus effectively improving the stability and durability of the hair dryer's distance detection function.

[0048] The rotating connector 5 serves as the carrier for the ranging module 4, cleverly utilizing the space at the connection between the blower 1 and the handle 2. Compared to placing the ranging module 4 separately in other locations, this design avoids occupying additional limited space inside or outside the blower, making the overall structural layout more compact and reasonable. At the same time, integrating the ranging module 4 onto the rotating connector 5 reduces complex wiring and separate installation structures, lowers the complexity of product design and manufacturing, improves production efficiency, and also provides possibilities for miniaturization and lightweight design of the product.

[0049] In this embodiment of the utility model, the rotating connector 5 includes a fixed end 6 corresponding to the air duct 1 and a rotating shaft end 7 corresponding to the handle 2. The handle 2 has an opening 8 on the side facing the air outlet 13 of the air duct 1, which is movable to the rotating shaft end 7. The ranging module 4 is fixedly connected to the rotating shaft end 7 and is located at the position corresponding to the opening 8.

[0050] The fixed end 6 is tightly connected to the air duct 1 to ensure the stability of the air duct 1 during rotation, so that the rotation of the air duct 1 can be accurately transmitted to the entire connection structure. The rotating shaft end 7 is adapted to the opening 8 specially opened on the handle 2. The opening 8 provides space for the movement of the rotating shaft end 7, while limiting the trajectory and range of rotation. The ranging module 4 is installed on the rotating shaft end 7 and corresponds to the position of the opening 8. When the air duct 1 drives the rotating connecting piece 5 to rotate through the fixed end 6, the rotating shaft end 7 rotates in the opening 8, thereby driving the ranging module 4 to rotate synchronously.

[0051] The ranging module 4 is positioned at the opening 8 corresponding to the shaft end 7, so that the detection direction of the ranging module 4 can accurately follow the change of the air outlet direction of the blower 1. No matter how the blower 1 rotates, the ranging module 4 can always be aligned with the hair area pointed to by the air outlet 13 of the blower 1, and accurately detect the distance.

[0052] In this embodiment of the present invention, the rotating shaft end 7 is provided with a mounting position 9 for accommodating the ranging module 4, and a window 10 communicating with the mounting position 9 is opened along the surface of the rotating shaft end 7, and a transparent component 11 corresponding to the ranging module 4 is connected to the window 10.

[0053] The ranging module 4 is cleverly integrated inside the rotating shaft end 7, and the detection and protection functions are realized through the window 10 and the transparent part 11, which avoids setting up a complicated detection device and protection structure on the outside of the hair dryer, making the overall structure of the product more compact and reasonable.

[0054] Specifically, the mounting position 9 that accommodates the ranging module 4 provides a stable placement space for the ranging module 4, ensuring that the ranging module 4 will not shift due to vibration or other factors when the hair dryer is working, thus guaranteeing the stable operation of the distance detection function. The window 10 opened along the surface of the rotating shaft end 7 forms a connection channel between the ranging module 4 and the external environment. The transparent part 11 connected to the window 10, such as a lens, allows the detection signals (such as infrared signals and ultrasonic signals) emitted by the internal sensing elements of the ranging module 4 to accurately penetrate the window 10 and reach the position of the hair outside for distance detection when the ranging module 4 is working. The transparent part 11 effectively blocks external factors such as dust, water vapor, and collisions from interfering with and damaging the precision sensing elements inside the ranging module 4, maintaining the stable working state of the ranging module 4 and achieving an efficient and stable distance detection function.

[0055] In this embodiment of the present invention, within the allowable angle range of the rotation of the air duct 1 relative to the handle 2, the rotating shaft end 7 of the rotating connector 5 is at least partially in the opening 8 position, so that the detection orientation of the ranging module 4 always corresponds to the air outlet orientation of the air duct 1.

[0056] In the overall structural design of this smart hair dryer, the hair dryer 1 and the handle 2 are connected by a rotating connector 5. The rotating shaft end 7 of the rotating connector 5 cooperates with the opening 8 on the handle 2. The allowable angle range of the hair dryer 1 relative to the handle 2 is preset. Within this range, the size, shape and relative position relationship of the rotating shaft end 7 and the opening 8 are designed to ensure that the rotating shaft end 7 can always remain at least partially in the position of the opening 8 during the rotation of the hair dryer 1. Since the ranging module 4 is fixed to the rotating shaft end 7, the ranging module 4 can rotate with the rotation of the hair dryer 1, and its detection direction always corresponds to the air outlet direction of the hair dryer 1.

[0057] This means that no matter what angle the hair dryer 1 is at, the distance measuring module 4 can accurately detect the distance between the hair area pointed to by the air outlet 13 of the hair dryer 1 and the hair dryer, thus achieving a precise correspondence between the direction detected by the distance measuring module 4 and the direction of the air outlet of the hair dryer 1.

[0058] In this embodiment of the invention, the distance sensor is a laser rangefinder or an infrared rangefinder.

[0059] Laser rangefinder: Utilizing the rectilinear propagation characteristics of laser and the stability of the speed of light, a laser pulse is emitted towards the target hair, and then the time from the laser emission to its reflection back by the hair is measured. The distance between the hair and the hair dryer is calculated using relevant algorithms. Laser has the characteristics of high directionality, high energy density, and good monochromaticity, which enables high-precision distance measurement.

[0060] Infrared ranging sensors typically use infrared LEDs to emit infrared light. When the infrared light shines on the hair, it is reflected back, and the infrared receiver tube receives the reflected light. By detecting the time difference or light intensity change between the emitted and received light, the distance between the hair and the hair dryer is calculated using relevant algorithms. Infrared light has strong penetrating and anti-interference capabilities and is relatively safe for the human body.

[0061] In this embodiment of the utility model, the handle 2 is provided with a groove 12 corresponding to its connection with the air duct 1, which is matched with the rotating shaft end 7 of the rotating connector 5, and the opening 8 is provided on one side of the groove 12.

[0062] The slot 12 provides a stable mounting and rotation base for the shaft end 7, limiting the rotation trajectory of the shaft end 7 so that it can only rotate in a specific direction and range. At the same time, an opening 8 is opened on one side of the slot 12, which corresponds to the distance measuring module 4 installed on the shaft end 7. This design allows the hair dryer 1 to be connected to the handle 2 through the rotating connector 5. When the hair dryer 1 rotates, the shaft end 7 rotates in the slot 12. Due to the presence of the opening 8, the distance measuring module 4 can perform detection work without obstruction. Its detection direction can always be consistent with the air outlet direction of the hair dryer 1, so as to achieve accurate detection of the distance between the hair dryer and the hair.

[0063] In this embodiment of the utility model, a temperature sensing element is provided inside the air duct 1, and the temperature sensing element is electrically connected to the control unit 3;

[0064] The control unit 3 dynamically adjusts the outlet temperature of the air duct 1 based on the distance information detected by the ranging module 4 and the temperature information detected by the temperature sensing element.

[0065] By combining distance and temperature information to regulate the air outlet temperature, the risk of hair damage is greatly reduced. When the distance is too close, the air outlet temperature is automatically reduced to avoid excessive moisture loss and cuticle damage caused by concentrated high-temperature airflow. This effectively reduces problems such as dry hair, split ends, and breakage, providing comprehensive care for hair health and meeting users' needs for high-quality hair care. Conversely, if the distance is far and the temperature is suitable, the heating power is appropriately increased to raise the air outlet temperature and ensure drying efficiency.

[0066] Specifically, when the ranging module 4 reports that the distance between the hair dryer and the hair is too close, and the temperature sensing element detects that the temperature inside the blower 1 is too high, the control unit 3 determines that the hair is at high risk of heat damage and then issues an instruction to reduce the power of the heating component, thereby dynamically lowering the air outlet temperature of the blower 1.

[0067] In summary, from the perspective of temperature environment factors, when the hair dryer 1 is working, the heat is mainly concentrated inside the hair dryer 1 and near the air outlet 13. The connection point between the hair dryer 1 and the handle 2, where the rotating connector 5 is located, is far away from the high-temperature area inside the hair dryer 1, and the temperature is relatively low and stable. This provides an ideal working environment for the distance measuring module 4, which can effectively avoid changes in the performance of the electronic components inside the distance measuring module 4 due to high temperature, ensuring its stable operation and continuous and accurate detection of the distance between the hair dryer and the hair. From an ergonomic point of view, when the user is holding the hair dryer, the hand naturally holds the handle 2, while the rotating connector 5 is located outside the hand's grip range. The user's hand will not touch this part during normal use. This positional characteristic makes the rotating connector 5 an excellent choice for placing the distance measuring module 4, which does not affect the user's normal grip operation and provides a safe, stable and interference-free installation position for the distance measuring module 4.

[0068] Preferably, in the design of this smart hair dryer, when the ranging module 4 is set at the connection between the blower 1 and the handle 2, from the perspective of the actual detection distance, since this position can be approximated as being at the handle 2 position, compared to setting the ranging module 4 directly at the air outlet 13 of the blower 1, the actual detection path is equivalent to being lengthened by about 10cm. To ensure that the detected distance can truly reflect the actual distance between the hair dryer's air outlet 13 and the hair, compensation can be made at the software algorithm level. Specifically, the software algorithm will pre-store this distance deviation data (about 10cm). When the ranging module 4 detects the distance data between the hair dryer and the hair, the algorithm will automatically subtract this fixed deviation value (10cm) from the detected value. For example, if the distance detected by the ranging module 4 is 25cm, after compensation by the software algorithm, the actual distance data received by the control unit 3 will be 25cm-10cm=15cm, thereby achieving accurate distance calibration and ensuring that subsequent intelligent control based on distance can be performed based on accurate distance information.

[0069] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A smart hair dryer with distance detection function, characterized in that, It includes a blower and a connected handle, wherein a control unit is provided in the blower and / or the handle, and a distance measuring module is provided at the connection between the blower and the handle, and the distance measuring module is electrically connected to the control unit; The detection direction of the ranging module is consistent with the air outlet direction of the air duct; The air duct is rotatably connected to the handle, and the ranging module can rotate along with the air duct so that the detection direction of the ranging module is always consistent with the air outlet direction of the air duct.

2. The intelligent hair dryer with distance detection function according to claim 1, characterized in that, A rotating connector is provided between the air duct and the handle. One end of the rotating connector is fixedly connected to the air duct, and the other end of the rotating connector is rotatably connected to the handle. The ranging module is fixedly connected to the rotating connector.

3. A smart hair dryer with distance detection function according to claim 2, characterized in that, The rotating connector includes a fixed end corresponding to the air duct and a rotating shaft end corresponding to the handle. The handle has an opening on the side facing the air outlet of the air duct that is movable to the rotating shaft end. The ranging module is fixedly connected to the rotating shaft end at the position corresponding to the opening.

4. A smart hair dryer with distance detection function according to claim 3, characterized in that, The rotating shaft end has a mounting position for accommodating the ranging module, and a window communicating with the mounting position is opened along the surface of the rotating shaft end. A transparent component corresponding to the ranging module is connected to the window.

5. A smart hair dryer with distance detection function according to claim 3, characterized in that, Within the allowable angle range of the air duct's rotation relative to the handle, the rotating shaft end of the rotating connector is at least partially in an open position so that the detection orientation of the ranging module always corresponds to the air outlet orientation of the air duct.

6. A smart hair dryer with distance detection function according to claim 1, characterized in that, The ranging module is a laser ranging sensor or an infrared ranging sensor.

7. A smart hair dryer with distance detection function according to claim 3, characterized in that, The handle has a groove corresponding to its connection with the air duct, which is matched with the rotating shaft end of the rotating connector, and an opening is provided on one side of the groove.

8. A smart hair dryer with distance detection function according to any one of claims 1-7, characterized in that, A temperature sensing element is installed inside the air duct, and the temperature sensing element is electrically connected to the control unit; The control unit dynamically adjusts the outlet temperature of the air duct based on the distance information detected by the ranging module and the temperature information detected by the temperature sensing element.

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