Hair drier

Abstract

The invention relates to the technical field, in particular to a hair drier which comprises a shell provided with an air inlet and an air outlet, a heating structure and a control main board which are installed in the shell, the heating structure is in communication connection with the control main board, the hair drier further comprises a distance sensor used for sensing the distance between the air outlet and hair, and the distance sensor is installed at the air outlet. The distance sensor is in communication connection with the control mainboard. The distance between the air outlet and the hair is sensed in real time, the air outlet temperature is adjusted in a self-adaptive mode, it is effectively avoided that when the air outlet is too close to the hair, the local temperature is too high, the hair quality is damaged, the power can be reasonably improved when the distance is too far, the drying efficiency is guaranteed, meanwhile, the intelligent degree and use safety of the hair drier are improved, and the blowing experience of a user is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hair dryer, more particularly, to a hair dryer. BACKGROUND

[0002] As a common personal care appliance, the core function of hair dryer is to heat airflow through heating structure, and to realize fast drying of hair by airflow flow, which has been widely applied in daily life, beauty salon and other scenarios. The hair dryer in the prior art usually comprises a shell, a heating structure and a control mainboard, an air inlet and an air outlet are formed on the shell, the heating structure and the control mainboard are both installed inside the shell and keep communication connection, the start-stop and heating power of the heating structure can be controlled through the control mainboard, so as to realize the adjustment of the air outlet temperature and meet the basic drying needs of users.

[0003] However, in actual use, the existing hair dryer has obvious technical defects: due to the lack of sensing ability of the distance between the air outlet and the hair, the user needs to judge the distance between the hair dryer and the hair by experience and manually adjust the working parameters. When the air outlet is too close to the hair, the heat generated by the heating structure will be excessively gathered in the local, causing the local temperature of the hair to be too high, which not only easily damages the hair quality, causes the hair to be dry and forked, but also may scald the scalp, which has a safety hazard; when the air outlet is too far away from the hair, the heat diffusion range is too large, the heat and airflow intensity effective on the hair are insufficient, which not only greatly reduces the drying efficiency, but also causes energy waste.

[0004] At the same time, with the trend of consumption upgrading, users have higher requirements for the intelligence, safety and use experience of hair dryer. The existing hair dryer relies on manual control mode of users, which is difficult to adapt to the precise needs in different hair quality and different drying scenarios, has low intelligence, and cannot realize self-adaptive adjustment based on the use distance. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art, provide a hair dryer which can sense the distance between the air outlet and the hair in real time and adaptively adjust the air outlet temperature, effectively avoid the local temperature being too high to damage the hair quality when the air outlet is too close to the hair, and reasonably improve the power to ensure the drying efficiency when the distance is too far, while improving the intelligence and safety of the hair dryer and optimizing the hair drying experience of users.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is: a hair dryer, comprising a shell provided with an air inlet and an air outlet, a heating structure and a control mainboard installed in the shell, the heating structure and the control mainboard being in communication connection, further comprising a distance sensor for sensing the distance between the air outlet and the hair, the distance sensor being installed at the air outlet and being in communication connection with the control mainboard. By additionally installing the distance sensor at the air outlet, the distance between the air outlet and the hair can be sensed in real time and the signal can be transmitted to the control mainboard, so that the control mainboard can adaptively adjust the power of the heating structure based on the distance signal, effectively avoiding damage to the hair caused by the local high temperature when the air outlet is too close to the hair, and reasonably increasing the power to ensure the drying efficiency when the distance is too far, while improving the intelligent degree and use safety of the hair dryer and optimizing the hair drying experience of the user.

[0007] Further, the shell is further provided with an air duct, the air inlet, the air duct and the air outlet being in sequence communication, the heating structure comprising a heating cylinder and a heating wire, the heating cylinder being installed in the air duct, the heating cylinder being provided with a heating cavity, and the heating wire being installed in the heating cavity. By providing the airflow channel in the shell, which is in sequence communication with the air inlet, the air duct and the air outlet, the airflow flow path is more regular, the noise and energy loss caused by airflow turbulence are reduced, and the air outlet efficiency is improved; the heating structure is provided as the heating cylinder installed in the air duct and the heating wire assembled in the heating cavity of the heating cylinder, so that the heat generated by the heating wire can more concentratedly act on the airflow in the air duct, the heating uniformity is improved, the energy waste caused by heat dispersion is avoided, and the heating cylinder protects the heating wire, reducing the influence of airflow impact on the heating wire and prolonging the service life of the heating structure.

[0008] Further, the heating structure further comprises a temperature sensor for monitoring the temperature of the heating wire, the temperature sensor being in communication connection with the heating wire and the control mainboard respectively. By additionally providing the temperature sensor in the heating structure for monitoring the temperature of the heating wire, the temperature data of the heating wire can be collected in real time and fed back to the control mainboard, and the control mainboard can accurately control the working state of the heating wire according to the data, avoiding the burning of the heating wire due to overheating and ensuring the operation stability of the heating structure; at the same time, it can prevent the hair from being damaged or the user from being scalded by the high temperature of the air outlet, further improve the use safety of the hair dryer, and ensure that the air outlet temperature is always within a reasonable range.

[0009] Further, the shell is further provided with a control cavity independent of the air duct, the control mainboard is installed in the control cavity, and a heat insulation plate is installed between the control cavity and the air duct. By opening the control cavity independent of the air duct in the shell and installing the control mainboard, and arranging the heat insulation plate between the control cavity and the air duct, the heat in the air duct can be effectively blocked from being transmitted to the control cavity, avoiding the electronic components from aging, performance degradation or failure caused by the control mainboard being in a high-temperature environment for a long time, and ensuring the stable operation of the control mainboard. The independent control cavity can also reduce the erosion of dust, water vapor and the like carried by the airflow in the air duct on the control mainboard, and improve the overall reliability and service life of the hair dryer.

[0010] Further, the shell includes a handle part and a main body part, the air inlet is arranged at the bottom end of the handle part, the air outlet is arranged at one end of the main body part, the air duct is arranged through the handle part and the main body part and communicates the handle part and the main body part, and the control cavity is arranged at the other end of the main body part. By dividing the shell into the handle part and the main body part, the layout of the air inlet, the air outlet, the air duct and the control cavity is reasonably planned, the air inlet is arranged at the bottom end of the handle part and the air outlet is arranged at one end of the main body part, which conforms to the user's habit of holding the hair dryer and avoids the air inlet being blocked by the hand to affect the air inlet; the air duct is arranged through the handle part and the main body part and communicates the handle part and the main body part, which makes the airflow conveying path smoother and reduces the airflow resistance; the control cavity is arranged at the other end of the main body part away from the high-temperature area of the air outlet, which further improves the heat dissipation environment of the control mainboard, and at the same time makes the overall structure of the hair dryer more compact, the gravity center more balanced, and the holding comfort improved.

[0011] Further, the hair dryer further includes a fan, the fan is installed at one end of the handle part close to the air inlet, and the air outlet direction of the fan is opposite to the air duct. By installing the fan at one end of the handle part close to the air inlet and arranging the air outlet direction of the fan opposite to the air duct, the cold air sucked into the air inlet by the fan can directly enter the air duct, reducing the path loss in the airflow conveying process and improving the airflow conveying efficiency; the installation position of the fan close to the air inlet can reduce the air inlet resistance and improve the air inlet efficiency, and at the same time, the space layout of the handle part is more reasonable, avoiding the heat dissipation problem caused by the close contact between the fan and the heating structure, ensuring the stable operation of the fan, and further improving the drying efficiency of the hair dryer.

[0012] Further, the air inlet is provided with a dust cover. By installing the dust cover on the air inlet, the dust, hair, particulate matter and other impurities in the air can be effectively blocked from entering the inside of the shell, avoiding the impurities from blocking the air duct to affect the air outlet efficiency, preventing the impurities from adhering to the surface of the heating wire, the fan and other components to cause failure, reducing the wear of the components, and prolonging the service life of the hair dryer; at the same time, the impurities can be prevented from being blown out with the airflow to pollute the hair and improve the hygiene of use.

[0013] Further, the shell is provided with a wind speed gear button for adjusting the wind speed and a one-key cold wind button for blowing cold wind. By providing the wind speed gear button and the one-key cold wind button on the shell, the wind speed gear button can be used by the user to flexibly adjust the wind speed according to the user's own needs (such as fast blow-drying, moderate blow-drying, styling, etc.), adapt to different hair types and use scenarios; the one-key cold wind button can realize quick switching of the cold wind function, without complex operation, so that the cold wind can be used for styling after blow-drying, reducing the damage of high-temperature styling to the hair, improving the operation convenience, and meeting the diversified use needs of the user.

[0014] Further, a control panel is further included, which is installed at one end of the shell away from the air outlet and is in communication connection with the control mainboard. By installing the control panel at one end of the shell away from the air outlet and in communication connection with the control mainboard, the installation position away from the air outlet can avoid the influence of high-temperature airflow on the user during operation, improving the operation safety; as the interactive interface between the user and the hair dryer, the control panel can enable the user to intuitively perform gear adjustment, function switching and other operations, the operation instructions can be quickly transmitted to the control mainboard and executed, the operation response speed is improved, the interactive experience of the user is optimized, and the operation of the hair dryer is more convenient and intuitive.

[0015] Further, a temperature prompt light strip is further included, which is laid on the surface of the shell and is in communication connection with the control mainboard. By laying the temperature prompt light strip on the surface of the shell and in communication connection with the control mainboard, the real-time air outlet temperature of the hair dryer can be intuitively fed back to the user in the form of light, so that the user can judge whether the current temperature is suitable for the hair without the aid of other tools, avoiding damage to the hair due to too high temperature; at the same time, the light prompt form is more eye-catching, improving the use convenience and intelligent perception of the hair dryer, and enhancing the user's trust and use experience of the product.

[0016] Compared with the prior art, the present application has the following beneficial effects: (1) by additionally installing the distance sensor at the air outlet, the distance between the air outlet and the hair can be sensed in real time and the signal can be transmitted to the control mainboard, so that the control mainboard can adaptively adjust the power of the heating structure based on the distance signal, effectively avoiding local high temperature due to too close distance between the air outlet and the hair, damaging the hair, and reasonably increasing the power when the distance is too far to ensure the blow-drying efficiency, while improving the intelligent degree and use safety of the hair dryer and optimizing the blow-drying experience of the user;

[0017] (2) by additionally installing the temperature sensor for monitoring the temperature of the heating wire in the heating structure, the temperature data of the heating wire can be collected in real time and fed back to the control mainboard, so that the control mainboard can accurately control the working state of the heating wire according to the data, avoid burning of the heating wire due to overheating, and ensure the operation stability of the heating structure; at the same time, the use safety of the hair dryer can be further improved, and the air outlet temperature is always kept within a reasonable range, preventing damage to the hair or scalding of the user due to too high air outlet temperature.

[0018] (3) By laying the temperature prompt light strip in communication connection with the control main plate on the surface of the shell, the real-time air outlet temperature of the hair dryer can be intuitively fed back to the user in the form of light, so that the user can judge whether the current temperature is suitable for his / her hair without the help of other tools, and damage to the hair caused by too high temperature is avoided; meanwhile, the light prompt form is more eye-catching, the use convenience and the intelligent perception of the hair dryer are improved, and the trust and use experience of the user for the product are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic diagram of a hair dryer in an embodiment of the present application;

[0020] Figure 2 Fig. 2 is a right view of the hair dryer in the embodiment of the present application;

[0021] Figure 3 Fig. 3 is a sectional view of A-A in Fig. 1; Figure 2

[0022] Fig. 4 is a structural schematic diagram of the inside of the main body part of the hair dryer in the embodiment of the present application; Figure 4

[0023] Fig. 5 is a structural schematic diagram of the inside of the handle part of the hair dryer in the embodiment of the present application. Figure 5 In the drawings: 1 is a shell, 11 is an air outlet, 12 is an air inlet, 13 is an air duct, 14 is a fan, 15 is a dust cover, 2 is a distance sensor, 3 is a heating structure, 31 is a heating wire, 32 is a heating cylinder, 4 is a control main plate, 5 is a control panel, 6 is a temperature prompt light strip, 7 is a heat insulation plate, 8 is a wind speed gear button, and 9 is a one-key cold wind button.

[0024] DETAILED DESCRIPTION

[0025] The present application will be further described below in conjunction with specific embodiments. The drawings are only used for illustrative description, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; it can be understood by those skilled in the art that some well-known structures in the drawings and their descriptions can be omitted.

[0026] ​In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1

[0028] like Figures 1-4 As shown, a hair dryer 14 includes a housing 1 with an air inlet 12 and an air outlet 11, a heating structure 3 installed inside the housing 1, and a control motherboard 4. The heating structure 3 and the control motherboard 4 are communicatively connected. It also includes a distance sensor 2 for sensing the distance between the air outlet 11 and the hair. The distance sensor 2 is installed at the air outlet 11 and is communicatively connected to the control motherboard 4. By adding the distance sensor 2 installed at the air outlet 11, the distance between the air outlet 11 and the hair can be sensed in real time and the signal can be transmitted to the control motherboard 4. This allows the control motherboard 4 to adaptively adjust the power of the heating structure 3 based on the distance signal, effectively preventing excessively high local temperatures that could damage the hair when the air outlet 11 is too close to the hair, and also reasonably increasing the power to ensure drying efficiency when the distance is too far. This improves the intelligence and safety of the hair dryer 14 and optimizes the user's drying experience.

[0029] An air duct 13 is also provided inside the outer casing 1. The air inlet 12, the air duct 13, and the air outlet 11 are connected in sequence. The heating structure 3 includes a heating cylinder 32 and a heating wire 31. The heating cylinder 32 is installed in the air duct 13 and has a heating chamber. The heating wire 31 is installed in the heating chamber. By opening an airflow channel in the outer casing 1 that connects the air inlet 12, the air duct 13, and the air outlet 11 in sequence, the airflow path is made more regular, reducing noise and energy loss caused by airflow turbulence and improving air outlet efficiency. By setting the heating structure 3 as a heating cylinder 32 installed in the air duct 13 and a heating wire 31 assembled in the heating chamber of the heating cylinder 32, the heat generated by the heating wire 31 can be more concentrated on the airflow in the air duct 13, improving heating uniformity and avoiding energy waste caused by heat dispersion. At the same time, the heating cylinder 32 protects the heating wire 31, reducing the impact of airflow on the heating wire 31 and extending the service life of the heating structure 3.

[0030] The heating structure 3 further comprises temperature sensors for monitoring the temperature of the heating wires 31, which are respectively in communication connection with the heating wires 31 and the control mainboard 4. By adding the temperature sensors for monitoring the temperature of the heating wires 31 in the heating structure 3, the temperature data of the heating wires 31 can be collected in real time and fed back to the control mainboard 4, and the control mainboard 4 can accurately control the working state of the heating wires 31 according to the data, so as to avoid the burning of the heating wires 31 due to overheating and ensure the operation stability of the heating structure 3; at the same time, it can prevent the hair from being damaged or the user from being scalded due to the excessively high air outlet temperature, further improve the use safety of the hair dryer 14, and ensure that the air outlet temperature is always within a reasonable range.

[0031] The shell 1 further comprises a control cavity independent of the air duct 13, the control mainboard 4 is installed in the control cavity, and a heat insulation plate 7 is installed between the control cavity and the air duct 13. By opening the control cavity independent of the air duct 13 in the shell 1 and installing the control mainboard 4, and by arranging the heat insulation plate 7 between the control cavity and the air duct 13, the heat in the air duct 13 can be effectively blocked from being transferred to the control cavity, so as to avoid the aging, performance degradation or failure of the electronic components of the control mainboard 4 due to long-term high-temperature environment, and ensure the stable operation of the control mainboard 4; the independent control cavity can also reduce the erosion of the control mainboard 4 by dust, water vapor and the like carried by the airflow in the air duct 13, and improve the overall reliability and service life of the hair dryer 14.

[0032] The shell 1 comprises a handle portion and a main body portion, the air inlet 12 is arranged at the bottom end of the handle portion, the air outlet 11 is arranged at one end of the main body portion, the air duct 13 is arranged through the handle portion and the main body portion and communicates the handle portion and the main body portion, and the control cavity is arranged at the other end of the main body portion. By dividing the shell 1 into the handle portion and the main body portion, the layout of the air inlet 12, the air outlet 11, the air duct 13 and the control cavity is reasonably planned, the air inlet 12 is arranged at the bottom end of the handle portion and the air outlet 11 is arranged at one end of the main body portion, which conforms to the user's habit of holding the hair dryer 14 and avoids the air inlet 12 being blocked by the hand and affecting the air inlet; the air duct 13 penetrates through the handle portion and the main body portion and communicates them, so that the airflow conveying path is smoother and the airflow resistance is reduced; the control cavity is arranged at the other end of the main body portion, away from the high-temperature area of the air outlet 11, which further improves the heat dissipation environment of the control mainboard 4, and at the same time makes the overall structure of the hair dryer 14 more compact and the gravity center more balanced, and improves the holding comfort.

[0033] As Figure 3 and Figure 5As shown, it also includes a fan 14, which is installed at the end of the handle near the air inlet 12. The air outlet direction of the fan 14 is set relative to the air duct 13. By installing the fan 14 at the end of the handle near the air inlet 12 and setting the air outlet direction of the fan 14 relative to the air duct 13, the cold air drawn in by the fan 14 from the air inlet 12 can directly enter the air duct 13, reducing path loss during airflow and improving airflow efficiency. The installation position of the fan 14 near the air inlet 12 can reduce air intake resistance and improve air intake efficiency. At the same time, the spatial layout of the handle is more reasonable, avoiding heat dissipation problems caused by close contact between the fan 14 and the heating structure 3, ensuring the stable operation of the fan 14, and further improving the drying efficiency of the blower 14.

[0034] like Figure 5 As shown, a dust cover 15 is installed on the air inlet 12. By installing the dust cover 15 on the air inlet 12, dust, hair, particulate matter and other impurities in the air can be effectively blocked from entering the interior of the outer casing 1, preventing impurities from clogging the air duct 13 and affecting the air output efficiency, preventing impurities from adhering to the surface of components such as the heating wire 31 and the fan 14 and causing malfunctions, reducing component wear, and extending the service life of the hair dryer 14; at the same time, it can prevent impurities from being blown out with the airflow and contaminating the hair, improving the hygiene of use.

[0035] like Figure 1 As shown, the outer casing 1 is equipped with a wind speed control button 8 for adjusting the wind speed and a one-touch cool air button 9 for blowing out cool air. By setting the wind speed control button 8 and the one-touch cool air button 9 on the outer casing 1, the wind speed control button 8 allows users to flexibly adjust the wind speed according to their own needs (such as quick drying, gentle drying, styling, etc.) to adapt to different hair types and usage scenarios; the one-touch cool air button 9 enables quick switching to the cool air function, allowing users to use cool air to style their hair after drying without complicated operations, reducing the damage to hair quality caused by high-temperature styling, improving ease of operation, and meeting the diverse usage needs of users.

[0036] like Figure 1 and Figure 3 As shown, it also includes a control panel 5, which is installed at the end of the housing 1 furthest from the air outlet 11. The control panel 5 is communicatively connected to the control motherboard 4. By installing the control panel 5, which is communicatively connected to the control motherboard 4, at the end of the housing 1 furthest from the air outlet 11, the installation position away from the air outlet 11 can avoid the user being affected by the high-temperature airflow during operation, thus improving operational safety. The control panel 5 serves as the user's interface with the hair dryer 14, allowing the user to intuitively perform operations such as adjusting the speed and switching functions. Operation commands can be quickly transmitted to the control motherboard 4 and executed, improving the operation response speed, optimizing the user's interactive experience, and making the operation of the hair dryer 14 more convenient and intuitive.

[0037] like Figure 1As shown, it also includes a temperature indicator light strip 6, which is laid on the surface of the outer casing 1 and is communicatively connected to the control motherboard 4. By laying the temperature indicator light strip 6 on the surface of the outer casing 1 and communicating with the control motherboard 4, the real-time airflow temperature of the hair dryer 14 can be intuitively fed back to the user in the form of light. This allows the user to determine whether the current temperature is suitable for their hair type without the need for other tools, avoiding damage to the hair due to excessive temperature. At the same time, the light indication is more eye-catching, improving the ease of use and intelligent appearance of the hair dryer 14, enhancing the user's trust in the product and the user experience.

[0038] The working process of this invention is as follows: First, the user holds the handle of the outer shell 1 and issues a start command through the control panel 5 installed on the end of the outer shell 1 away from the air outlet 11 or by directly operating the wind speed button 8 on the outer shell 1. The command is transmitted to the control motherboard 4 installed in the control cavity of the main body, and the control motherboard 4 then starts the whole machine to work.

[0039] Upon startup, the fan 14, installed on the handle near the air inlet 12, starts running first, drawing in outside air through the air inlet 12 at the bottom of the handle. The dust cover 15 at the air inlet 12 simultaneously filters dust, hair, and other impurities from the air, preventing them from entering the machine. Driven by the fan 14, the drawn-in air is transported along the air duct 13 that runs through the handle and the main body towards the air outlet 11, forming a stable airflow channel.

[0040] Simultaneously, the control board 4 sends a heating command to the heating structure 3. The heating wire 31, installed in the heating cylinder 32 inside the air duct 13, begins to work and generate heat. As the airflow flows within the air duct 13, it comes into full contact with the heating wire 31 and is heated into hot air. During this process, the temperature sensor in the heating structure 3 monitors the temperature of the heating wire 31 in real time and continuously feeds the temperature data back to the control board 4. If the temperature exceeds a preset threshold, the control board 4 will immediately adjust the heating wire 31 to reduce its power or stop working to ensure that the outlet air temperature remains stable within a safe range.

[0041] When hot air is delivered to the air outlet 11 of the main body, the distance sensor 2 installed at the air outlet 11 is activated simultaneously to sense the distance between the air outlet 11 and the user's hair in real time, and transmits the distance signal to the control motherboard 4. The control motherboard 4 adaptively adjusts according to the distance signal: if the distance is too close, it controls the heating wire 31 to reduce its power and the fan 14 to reduce its speed to avoid local high temperature damage to the hair; if the distance is too far (above the preset high-efficiency distance), it appropriately increases the power of the heating wire 31 or the speed of the fan 14 to ensure drying efficiency; if the distance is within a reasonable range, it maintains the current working parameters.

[0042] The heated airflow is finally blown onto the hair through the air outlet 11 to achieve the drying function. During operation, the temperature indicator light strip 6 on the surface of the outer casing 1 will display a corresponding color according to the temperature signal transmitted by the control motherboard 4, intuitively indicating the current air outlet temperature to the user; if the user needs to switch the fan speed, they can issue a command through the fan speed setting button 8 to control the motherboard 4 to adjust the speed of the fan 14 to achieve the speed switch; if a quick switch to cold air is required, pressing the one-button cold air button 9 will immediately stop the heating wire 31 from working, leaving only the fan 14 running, outputting cold air for hair styling.

[0043] After the work is completed, the user issues a stop command through the control panel 5, or releases the corresponding control button. After receiving the signal, the main board 4 shuts down the fan 14, heating wire 31, and other components in sequence, and the whole machine stops working. Throughout the entire operation, the heat insulation plate 7 between the control cavity and the air duct 13 continuously blocks heat transfer, ensuring that the main board 4 is always in a stable working environment and ensuring the reliability of the coordinated operation of all components.

[0044] In summary, this invention, by adding a distance sensor 2 installed at the air outlet 11, can sense the distance between the air outlet 11 and the hair in real time and transmit the signal to the control motherboard 4. This allows the control motherboard 4 to adaptively adjust the power of the heating structure 3 based on the distance signal, effectively preventing excessively high local temperatures that could damage the hair when the air outlet 11 is too close to the hair, and also reasonably increasing the power to ensure drying efficiency when the distance is too far. This also improves the intelligence and safety of the hair dryer 14 and optimizes the user's drying experience. Furthermore, by adding a temperature sensor to the heating structure 3 to monitor the temperature of the heating wire 31, the invention can collect the temperature data of the heating wire 31 in real time and feed it back to the control motherboard 4. The control motherboard 4 can then precisely adjust the power based on this data. The system controls the working state of the heating wire 31 to prevent it from burning out due to overheating, ensuring the operational stability of the heating structure 3. It also prevents excessively high airflow temperatures from damaging hair or burning the user, further enhancing the safety of the hair dryer 14 and ensuring the airflow temperature remains within a reasonable range. By installing a temperature indicator light strip 6 on the surface of the outer casing 1, which communicates with the control motherboard 4, the real-time airflow temperature of the hair dryer 14 can be intuitively displayed to the user in the form of light. This allows the user to determine whether the current temperature is suitable for their hair type without the need for other tools, preventing hair damage due to excessive heat. Furthermore, the more prominent light indicator enhances the ease of use and intelligent appearance of the hair dryer 14, increasing user trust and overall user experience.

[0045] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A hair dryer, comprising a housing having an air inlet and an air outlet, a heating structure installed within the housing, and a control mainboard, wherein the heating structure and the control mainboard are communicatively connected, characterized in that, It also includes a distance sensor for sensing the distance between the air outlet and the hair, the distance sensor being installed at the air outlet and communicating with the control motherboard.

2. The hair dryer according to claim 1, characterized in that, The outer casing also has an air duct, and the air inlet, the air duct and the air outlet are connected in sequence. The heating structure includes a heating cylinder and a heating wire. The heating cylinder is installed in the air duct, and the heating cylinder has a heating cavity. The heating wire is installed in the heating cavity.

3. The hair dryer according to claim 2, characterized in that, The heating structure also includes a temperature sensor for monitoring the temperature of the heating wire, and the temperature sensor is communicatively connected to both the heating wire and the control motherboard.

4. The hair dryer according to claim 2, characterized in that, The outer casing also has a control cavity independent of the air duct, the control main board is installed in the control cavity, and a heat insulation plate is installed between the control cavity and the air duct.

5. The hair dryer according to claim 4, characterized in that, The housing includes a handle portion and a main body portion. The air inlet is located at the bottom of the handle portion, the air outlet is located at one end of the main body portion, the air duct passes through the handle portion and the main body portion and connects the handle portion and the main body portion, and the control cavity is located at the other end of the main body portion.

6. The hair dryer according to claim 5, characterized in that, It also includes a fan, which is installed at the end of the handle near the air inlet, and the air outlet direction of the fan is set relative to the air duct.

7. The hair dryer according to claim 1, characterized in that, The air inlet is equipped with a dust cover.

8. The hair dryer according to claim 1, characterized in that, The outer casing is equipped with a wind speed setting button for adjusting the wind speed and a one-touch cold air button for blowing out cold air.

9. The hair dryer according to claim 1, characterized in that, It also includes a control panel, which is installed at the end of the housing away from the air outlet, and the control panel is communicatively connected to the control motherboard.

10. The hair dryer according to claim 1, characterized in that, It also includes a temperature indicator light strip, which is laid on the surface of the housing and is communicatively connected to the control motherboard.

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