Hair drier

Abstract

The hair dryer comprises a machine head, a handle and a display assembly, a draught fan barrel provided with a draught fan and a heat insulation barrel provided with a heating piece are arranged in the machine head, the draught fan barrel and the heat insulation barrel are enclosed to form an airflow channel, and the display assembly is arranged on the side portion of the machine head and corresponds to the draught fan barrel. According to the hair dryer, the display assembly is arranged on the side portion of the machine head, a user can conveniently observe parameters such as temperature and air speed through the display assembly when blowing air, and therefore the user can adjust the working parameters in time according to the requirements of the user so as to obtain better experience; moreover, the display assembly is arranged corresponding to the fan barrel and is located outside the airflow duct, airflow cannot be hindered and influenced, meanwhile, the display assembly is far away from the heating piece, the temperature of the fan barrel is lower than that of the heat insulation barrel, temperature rise of the display assembly can be reduced, the use performance of the display assembly is improved, and the service life of the display assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hair dryers, specifically to a hair dryer. Background Technology

[0002] As user demand for hair dryers continues to grow, hair dryers with display functions have appeared on the market. These hair dryers can display parameters such as wind speed and temperature on the screen, allowing users to view and adjust them according to their own needs, thereby improving the user experience.

[0003] Existing hair dryers have their display components located on the head, but this placement is problematic and causes issues during use. For example, patent CN202220727750.9 discloses a hair dryer where the temperature display component is located at the top of the head. Firstly, when the hair dryer is held high, the display component is out of the user's line of sight, failing to meet the user's need to monitor the temperature while blowing air, thus degrading the user experience. Secondly, the projection of the display component onto the heating element causes heat to easily transfer to the display component, resulting in overheating and affecting its performance and lifespan. Utility Model Content

[0004] This utility model provides a hair dryer, which aims to solve the technical problems of existing hair dryers where the display component is poorly positioned, causing difficulty for users to view and being easily affected by the heat of the heating element, resulting in a shortened lifespan.

[0005] This utility model discloses a hair dryer, including a head, a handle, and a display component. The head is provided with a fan cylinder containing a fan and a heat insulation cylinder containing a heating element. The fan cylinder and the heat insulation cylinder form an airflow channel. The display component is located on the side of the head and is positioned corresponding to the fan cylinder.

[0006] The hair dryer of this utility model also has the following additional technical features:

[0007] The handle is equipped with function adjustment keys, which are located on the same side as the display component.

[0008] The function adjustment keys are located at the upper end of the handle, and the display component is located at the intersection of the projection of the handle and the head.

[0009] One end of the heat insulation cylinder is provided with a first connecting part, and one end of the fan cylinder is provided with a second connecting part, with the first connecting part nested inside the second connecting part.

[0010] The fan casing includes a main body portion and a transition portion that taper radially relative to the second connecting portion. The display component is mounted on the main body portion, and the transition portion extends obliquely from the second connecting portion toward the main body portion.

[0011] The fan casing is provided with an installation platform for mounting the display component, and the installation platform is provided with positioning posts and screw posts at both ends along its length.

[0012] The display component includes a circuit board, and a heat dissipation gap is provided between the circuit board and the mounting platform.

[0013] The display component includes a circuit board, a light guide, a diffuser, and a light-transmitting plate arranged sequentially from the inside out. The inner surface of the light-transmitting plate is flat, and the outer surface of the light-transmitting plate is curved. An air layer is formed between the inner surface of the light-transmitting plate and the diffuser. Light emitted by the light guide enters the inner surface of the light-transmitting plate through the air layer, passes through the light-transmitting plate, and exits from the outer surface of the light-transmitting plate.

[0014] The outer surface of the light-transmitting plate is flush with the outer surface of the housing of the machine head.

[0015] The housing of the machine head has an installation port, the light-transmitting plate is snapped into the installation port, and a sealing element is provided between the light-transmitting plate and the installation port.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. The hair dryer of this utility model has a display component set on the side of the head, which allows users to easily observe parameters such as temperature and wind speed while blowing air. This allows users to adjust the working parameters in a timely manner according to their own needs and obtain a better experience. In addition, the display component is set corresponding to the fan barrel and located outside the airflow duct, so it will not obstruct the airflow. At the same time, it is far away from the heating element, and the temperature of the fan barrel is lower than that of the heat insulation cylinder, which can reduce the temperature rise of the display component and improve its performance and lifespan.

[0018] 2. It is understandable that the purpose of users viewing the display component is to understand the current working parameters and to facilitate timely adjustments when the working parameters do not meet their needs. To provide users with convenient adjustments, the handle is equipped with function adjustment keys, which are located on the same side as the display component. Thus, if users are not satisfied with the current working parameters while viewing the display component, they can immediately operate the function adjustment keys to adjust the parameters, and can adjust while viewing, without having to rotate the blower to adjust the angle, making the operation convenient and efficient.

[0019] Furthermore, the function adjustment keys are located at the top of the handle, and the display component is located at the intersection of the projection of the handle and the head unit. When the user operates the function adjustment keys, the user's line of sight can see the function adjustment keys so that the hand can perform the operation, and at the same time, the user can also see the display result of the display component, without the user's line of sight needing to move up and down, thereby further improving the user experience.

[0020] 3. Since the display component is positioned corresponding to the fan cylinder, further reducing the temperature of the fan cylinder will further reduce the temperature rise of the display component, thereby extending its service life. In one embodiment, one end of the heat insulation cylinder is provided with a first connecting part, and one end of the fan cylinder is provided with a second connecting part. The first connecting part is nested inside the second connecting part. By wrapping the fan cylinder around the outside of the heat insulation cylinder, the heat transfer from the heating element to the fan cylinder can be reduced under the heat insulation effect of the heat insulation cylinder. This not only helps to reduce the temperature rise of the display component, but also reduces the heat transfer to the fan, thereby reducing the temperature rise of the fan and extending its service life.

[0021] Furthermore, the fan casing includes a main body portion and a transition portion that taper radially relative to the second connecting portion. The display component is mounted on the main body portion, and the transition portion extends obliquely from the second connecting portion toward the main body portion. Thus, when heat is transferred to the second connecting portion, since the transition portion and the main body portion are at different heights from the second connecting portion, and the path is extended through the transition portion, the heat transfer to the main body portion can be reduced, thereby reducing the temperature rise of the display component and ensuring its performance.

[0022] 4. To facilitate the installation of the display component, the fan casing is provided with an installation platform for installing the display component. The arc-shaped sidewall of the installation platform fits the shape of the display component better than other parts of the fan casing, making it easier to install the display component. Furthermore, the installation platform is provided with positioning posts and screw posts at both ends along its length. When installing the display component, the positioning posts can be used to pre-position it to provide an accurate installation position, and then the screws can be used to fix it to ensure the reliability of the installation.

[0023] Furthermore, a heat dissipation gap is provided between the circuit board of the display component and the mounting platform, which can reduce the heat transfer from the fan casing to the circuit board, and at the same time, the airflow in the heat dissipation gap can be used to dissipate heat from the circuit board, preventing the circuit board from overheating and affecting its lifespan.

[0024] 5. To enhance the user's viewing experience, the display component includes a circuit board, a light guide, a diffuser, and a light-transmitting plate arranged sequentially from the inside out. The inner surface of the light-transmitting plate is flat, and the outer surface is curved. An air layer is formed between the inner surface of the light-transmitting plate and the diffuser. Light emitted from the light guide enters the inner surface of the light-transmitting plate through the air layer, passes through the light-transmitting plate, and exits from the outer surface. The advantage is that the light can enter the inner surface of the light-transmitting plate in parallel and then be refracted by the outer curved surface, which can make the emitted light more focused, the light intensity greater, and the view clearer.

[0025] Furthermore, the outer surface of the light-transmitting plate is flush with the outer surface of the head housing, which makes the overall exterior of the head smooth, avoids the formation of uneven structures, stabilizes the flow field during operation, eliminates severe turbulence areas, and helps improve wind speed and drying effect while reducing noise.

[0026] Furthermore, the housing of the head is provided with an installation port, and the light-transmitting plate is snapped into the installation port. A sealing element is provided between the light-transmitting plate and the installation port. By forming a seal, dust and dirt can be prevented from entering the machine and causing damage when the blower is working under a large airflow. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of a hair dryer according to one embodiment of this application.

[0029] Figure 2 This is an exploded view of the display component and housing according to one embodiment of this application.

[0030] Figure 3 This is a schematic cross-sectional view of the internal structure of the machine head according to one embodiment of this application.

[0031] Figure 4 This is a schematic diagram of the rear view of a hair dryer according to one embodiment of this application.

[0032] Figure 5 for Figure 4 An enlarged schematic diagram of the structure at point A in the middle.

[0033] Figure 6 This is a schematic diagram of the installation structure between the display component and the fan casing according to one embodiment of this application.

[0034] Figure label:

[0035] 10. Head unit; 101. Housing; 102. Mounting port; 103. Stop bar; 11. Handle; 12. Display assembly; 121. Circuit board; 122. Positioning hole; 123. Screw hole; 124. Light guide; 125. Diffuser; 126. Light-transmitting plate; 1261. Buckle; 127. Air layer; 13. Fan casing; 131. Fan; 132. Second connection part; 133. Main body; 134. Transition part; 135. Mounting platform; 136. Positioning post; 137. Screw post; 14. Heat insulation cylinder; 141. Heating element; 15. Function adjustment key; 16. Sealing element; 161. Notch. Detailed Implementation

[0036] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0037] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0039] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through a transitional structure, but are connected solely by a connecting structure to form a whole. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0042] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] like Figures 1 to 6 As shown, this application provides a hair dryer, including a head 10, a handle 11, and a display component 12. The head 10 contains a fan barrel 13 with a fan 131 and a heat insulation cylinder 14 with a heating element 141. The fan barrel 13 and the heat insulation cylinder 14 form an airflow channel. When the hair dryer is working, the fan 131 drives the fan blades to rotate, drawing in outside air from the air inlet of the head 10. The airflow is heated by the heating element 141 and then blown out from the air outlet of the head 10, providing hot air to the user. A temperature sensor and / or a wind speed sensor are provided near the air outlet of the head 10, for example. The display component 12 can display the temperature collected by the temperature sensor and / or the wind speed collected by the wind speed sensor when the hair dryer is working, so that the user can understand the actual situation of the current airflow and determine whether it meets their needs.

[0044] like Figure 1As shown, the display component 12 is located on the side of the head unit 10. By placing the display component 12 on the side of the head unit 10, users can easily observe parameters such as temperature and wind speed when blowing air, so that users can adjust the working parameters in a timely manner according to their own needs to obtain a better experience. In addition, the display component 12 is located outside the airflow duct corresponding to the fan cylinder 13, and will not obstruct the airflow. At the same time, it is far away from the heating element 141, and the temperature of the fan cylinder 13 is lower than that of the heat insulation cylinder 14, which can reduce the temperature rise of the display component 12 and improve its performance and lifespan.

[0045] The display content of the display component 12 is not limited to temperature and wind speed. It can be set according to the actual performance of the hair dryer. For example, in addition to displaying the air temperature and wind speed, it can also display indoor temperature, humidity, time and other information to enrich the display effect. Users can also compare the indoor temperature and the air temperature to select the appropriate air temperature. For example, when the indoor temperature is high, users can select a lower air temperature, and when the indoor temperature is low, they can select a higher air temperature, thereby improving the user's blowing experience.

[0046] It is understandable that the purpose of the user viewing the display component 12 is to understand the current operating parameters, so that the user can easily adjust them when the operating parameters do not meet their needs. As a preferred implementation, the handle 11 is provided with function adjustment keys 15, which the user can operate to adjust the operating parameters. Figure 1 As shown, the function adjustment key 15 and the display component 12 are located on the same side. If the user is not satisfied with the current working parameters while viewing the display component 12, he / she can immediately operate the function adjustment key 15 to adjust the parameters. The user can adjust and view at the same time without having to turn the hair dryer to adjust the angle. The operation is convenient and efficient.

[0047] Specifically, when the display component 12 can display the air temperature and air speed, the function adjustment key 15 can be used to adjust at least one of the outlet air temperature and air speed, for example... Figure 1 The device features two function adjustment keys 15, which can be used to adjust the outlet air temperature and fan speed respectively. Furthermore, the function adjustment keys 15 can be in the form of common buttons or push knobs, or the two function adjustment keys 15 can be configured in different forms to distinguish the adjustment content.

[0048] Furthermore, such as Figure 1As shown, the function adjustment key 15 is located at the upper end of the handle 11, and the display component 12 is located at the intersection of the projections of the handle 11 and the head unit 10. When the user operates the function adjustment key 15, their line of sight can see both the function adjustment key 15 for hand movements and the display result from the display component 12, without requiring the user's gaze to move up and down, thus further improving the user experience. Preferably, the projection of the function adjustment key 15 on the head unit 10 is within the range of the display component 12, allowing the user to simultaneously see both the hand movements on the function adjustment key 15 and the display result from the display component 12 without moving their gaze, enabling more efficient operation.

[0049] Since the display component 12 is set to correspond to the fan cylinder 13, further reducing the temperature of the fan cylinder 13 will be more conducive to reducing the temperature rise of the display component 12, thereby extending its service life. As a preferred embodiment, one end of the heat insulation cylinder 14 is provided with a first connecting part, and one end of the fan cylinder 13 is provided with a second connecting part 132, with the first connecting part nested inside the second connecting part 132.

[0050] like Figure 6 As shown, by wrapping the fan cylinder 13 around the outside of the heat insulation cylinder 14, the heat transfer from the heating element 141 to the fan cylinder 13 can be reduced under the heat insulation effect of the heat insulation cylinder 14. This not only helps to reduce the temperature rise of the display component 12, but also reduces the heat transfer to the fan 131, thereby reducing the temperature rise of the fan 131 and extending the service life of the fan 131.

[0051] The heat insulation cylinder 14 has a high internal temperature due to the presence of a heating element. By wrapping the fan cylinder 13 around the outside of the heat insulation cylinder 14, the temperature rise of the fan cylinder 13 can be effectively reduced. It is understood that the heat insulation cylinder 14 has a higher temperature resistance than the fan cylinder 13, and its outer surface temperature is lower, thus preventing significant heat transfer to the fan cylinder 13. The first connecting part and the second connecting part 132 facilitate the nesting of the fan cylinder 13 and the heat insulation cylinder 14, while also providing conditions for their fixed connection and positioning. The first connecting part and the second connecting part 132 can be fixed by snap-fitting, bonding, screwing, etc., depending on actual needs.

[0052] In a preferred embodiment, the fan casing 13 includes a main body 133 that tapers radially relative to the second connection portion 132 and a transition portion 134, the display component 12 is mounted on the main body 133, and the transition portion 134 extends obliquely from the second connection portion 132 toward the main body 133.

[0053] like Figure 6As shown, when heat is transferred to the second connecting part 132, since the transition part 134 and the main body part 133 are at different heights from the second connecting part 132, and the path is extended through the transition part 134, the heat transfer to the main body part 133 can be reduced, thereby reducing the temperature rise of the display component 12 and ensuring its performance.

[0054] In a preferred embodiment, the fan casing 13 is provided with a mounting platform 135 for mounting the display component 12, and the mounting platform 135 is provided with positioning posts 136 and screw posts 137 at both ends along its length.

[0055] like Figure 6 As shown, the curved sidewalls of the mounting platform 135, compared to other parts of the fan casing 13, fit the shape of the display component 12 more closely, making the display component 12 easier to install. When installing the display component 12, the positioning posts 136 can be used to pre-position it, providing an accurate installation position, and then screws can be used to ensure a secure installation. For example, two positioning posts 136 are provided, each located at one end of a diagonal line of the mounting platform 135. Pre-positioning the display component 12 using these two points effectively prevents displacement of the display component 12 during subsequent fixing, thus ensuring the accuracy of the installation position. Each positioning post 136 is accompanied by a screw post 137, which meets the strength requirements for fixing. The display component 12 includes a circuit board 121, which has positioning holes 122 that mate with the positioning posts 136 and screw holes 123 that mate with the screw posts 137.

[0056] Furthermore, the display component 12 includes a circuit board 121, and a heat dissipation gap is provided between the circuit board 121 and the mounting platform 135, which can reduce the heat transfer from the fan cylinder 13 to the circuit board 121, and at the same time, the airflow in the heat dissipation gap can be used to dissipate heat from the circuit board 121, preventing the circuit board 121 from overheating and affecting its lifespan.

[0057] In a preferred embodiment, the display assembly 12 includes a circuit board 121, a light guide 124, a diffuser 125, and a light-transmitting plate 126 arranged sequentially from the inside to the outside. The inner surface of the light-transmitting plate 126 is flat, and the outer surface of the light-transmitting plate 126 is curved. An air layer 127 is formed between the inner surface of the light-transmitting plate 126 and the diffuser 125. Light emitted by the light guide 124 enters the inner surface of the light-transmitting plate 126 through the air layer 127, passes through the light-transmitting plate 126, and exits from the outer surface of the light-transmitting plate 126.

[0058] like Figures 2 to 5As shown, circuit board 121 is used to electrically connect with sensors to obtain parameters such as temperature and wind speed. Light guide 124 typically has light sources such as LEDs to provide lighting effects. Diffuser 125 is used to correct astigmatism, making the display clearer. Light-transmitting plate 126 forms a viewing window, providing a visual effect for the user. By optimizing the inner and outer shapes of light-transmitting plate 126, the advantage is that light can enter the inner surface of light-transmitting plate 126 in parallel and then be refracted out through the outer curved surface, making the emitted light more focused, with greater light intensity and clearer visibility. Specifically, as... Figure 5 As shown, the light-transmitting plate 126 is a PC part with a refractive index of 1.5, and the air layer 127 has a refractive index of 1. After the light enters horizontally, it is refracted through the outer surface. Since the light travels from a denser medium to a less dense medium, the incident angle α will be smaller than the exit angle β. Therefore, the exit angle β will converge towards the center, resulting in a greater light intensity and clearer vision.

[0059] In one embodiment, the outer surface of the light-transmitting plate 126 is flush with the outer surface of the housing 101 of the head 10.

[0060] like Figure 1 , Figure 3 or Figure 5 As shown, the outer arc surface of the light-transmitting plate 126 forms a smooth connection with the outer surface of the housing 101, so that the outer surface of the head 10 is smooth, avoiding the formation of uneven structures, making the flow field stable when the hair dryer is working, without serious turbulence areas, which is conducive to improving wind speed and hair drying effect and reducing noise.

[0061] Understandably, in the prior art, the display component protrudes from the side of the head, that is, the display component protrudes from the outer surface of the housing. Under this structure, the external airflow will be blocked by obstacles and generate turbulence when it circulates, which will cause the airflow to be unstable, reduce the air intake effect, reduce the performance of wind speed and other properties, and also cause some noise. However, the flat outer wall structure of this application has less impact on the airflow, can improve airflow, and is conducive to noise reduction.

[0062] In another embodiment, the housing 101 of the head 10 has an installation port 102, and the light-transmitting plate 126 is snapped into the installation port 102. A sealing element 16 is provided between the light-transmitting plate 126 and the installation port 102.

[0063] like Figure 2As shown, the light-transmitting plate 126 has multiple buckles 1261 along its circumferential edge, and multiple slots are provided inside the housing 101 around the mounting opening 102. The light-transmitting plate 126 can be snapped into place by the buckles 1261 engaging with the slots. Furthermore, a sealing element 16 is provided to achieve a sealed installation of the light-transmitting plate 126, preventing dust and other contaminants from entering the machine and causing damage during operation under a large airflow. The sealing element 16 is a sealing ring that fits the shape of the mounting opening 102. A circumferentially arranged baffle 103 is provided at the mounting opening 102 to limit the sealing element 16, preventing it from slipping and improving the sealing effect. The sealing element 16 also has a notch 161 to avoid the buckles 1261, preventing interference and providing favorable conditions for fixing the light-transmitting plate 126.

[0064] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A hair dryer, comprising a head, a handle, and a display assembly, wherein the head contains a fan cylinder with a fan and a heat insulation cylinder with a heating element, the fan cylinder and the heat insulation cylinder forming an airflow duct, characterized in that, The display component is located on the side of the machine head and is positioned corresponding to the fan casing.

2. A hair dryer according to claim 1, characterized in that, The handle is equipped with function adjustment keys, which are located on the same side as the display component.

3. A hair dryer according to claim 2, characterized in that, The function adjustment keys are located at the upper end of the handle, and the display component is located at the intersection of the projection of the handle and the head.

4. A hair dryer according to claim 1, characterized in that, One end of the heat insulation cylinder is provided with a first connecting part, and one end of the fan cylinder is provided with a second connecting part, with the first connecting part nested inside the second connecting part.

5. A hair dryer according to claim 4, characterized in that, The fan casing includes a main body portion and a transition portion that taper radially relative to the second connecting portion. The display component is mounted on the main body portion, and the transition portion extends obliquely from the second connecting portion toward the main body portion.

6. A hair dryer according to claim 1, characterized in that, The fan casing is provided with an installation platform for mounting the display component, and the installation platform is provided with positioning posts and screw posts at both ends along its length.

7. A hair dryer according to claim 6, characterized in that, The display component includes a circuit board, and a heat dissipation gap is provided between the circuit board and the mounting platform.

8. A hair dryer according to claim 1, characterized in that, The display component includes a circuit board, a light guide, a diffuser, and a light-transmitting plate arranged sequentially from the inside out. The inner surface of the light-transmitting plate is flat, and the outer surface of the light-transmitting plate is curved. An air layer is formed between the inner surface of the light-transmitting plate and the diffuser. Light emitted by the light guide enters the inner surface of the light-transmitting plate through the air layer, passes through the light-transmitting plate, and exits from the outer surface of the light-transmitting plate.

9. A hair dryer according to claim 8, characterized in that, The outer surface of the light-transmitting plate is flush with the outer surface of the housing of the machine head.

10. A hair dryer according to claim 8, characterized in that, The housing of the machine head has an installation port, the light-transmitting plate is snapped into the installation port, and a sealing element is provided between the light-transmitting plate and the installation port.

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