Hair dryer

Abstract

The present invention provides a hair dryer, which includes a housing having an air inlet, a handle connected to the housing, and a heater assembly disposed in the housing. The heater assembly includes a heating element. An air outlet is provided between the air inlet and the heating element, and the air outlet guides a part of the air flow entering the housing from the air inlet into the handle. The design of the heat dissipation channel of the handle of the hair dryer provided by the present invention enables the circuit components to be arranged in the handle and dissipate heat, avoiding safety accidents caused by overheating and damage to the circuit components due to excessive temperature rise. By arranging the circuit components in the handle, the housing of the hair dryer can be made smaller, facilitating use and carrying. In addition, the double-switch assembly of the switch mechanism saves a relatively large space in the handle by using a new layout design, and there is sufficient space on the handle to arrange the circuit components.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and particularly to a hair dryer. Background Art

[0002] In daily life, hair dryers are widely used. Existing hair dryers generally include a housing and a handle. The housing includes a rectifying vane assembly, a heater assembly, and a circuit assembly. The rectifying vane assembly includes a motor and blades. The motor can drive the blades to rotate. When the blades rotate, air is sucked in from the air inlet provided on the housing, and the resulting centrifugal air flow is heated by the heating wire in the heater assembly and then blown out from the front end.

[0003] Since the housing of the hair dryer will become hot when using hot air for a long time, and the circuit assembly provided in the housing occupies a certain volume and generates heat during operation, heat dissipation is required. Figure 1 is a schematic cross-sectional view of a prior art hair dryer. As Figure 1 shown, the circuit assembly 100 of the hair dryer is provided on the downstream side of the rectifying vane assembly 200. The air flow generated by the rotation of the blades of the rectifying vane assembly 200 can pass through the circuit assembly 100, thereby being able to dissipate heat and cool down the circuit assembly 100 to a certain extent. Summary of the Invention

[0004] Technical Problems to be Solved by the Invention

[0005] However, the above heat dissipation structure causes new problems. Since the circuit assembly 100 of the hair dryer is provided on the downstream side of the rectifying vane assembly 200, the housing of the hair dryer becomes relatively large in the length direction. Therefore, how to balance the heat dissipation of the circuit assembly and the miniaturization of the hair dryer has become an urgent technical problem to be solved.

[0006] Solutions for Solving the Above Technical Problems

[0007] To solve the above problems, the present invention provides a hair dryer, including a housing having an air inlet, a handle connected to the housing, and a heater assembly provided in the housing. The heater assembly includes a heating element. An air outlet is provided between the air inlet and the heating element. The air outlet guides a part of the air flow entering the housing from the air inlet to the handle.

[0008] According to the above technical solution, a part of the air flow entering the housing from the air inlet can enter the air outlet and be guided to the handle without being heated by the heating element of the heater assembly, while the remaining part of the air flow can still pass through the heater assembly and be discharged from the front end. Thus, the air is branched when introduced into the housing of the hair dryer. One air flow is discharged through the air outlet for subsequent work, and the other air flow can still be discharged from the front end to achieve the effect of blowing air.

[0009] Preferably, heat dissipation holes are formed on the handle, and the air outlet is communicated with the heat dissipation holes to form a heat dissipation channel for air flow. More preferably, the heat dissipation holes are formed at one end of the handle far from the housing. Preferably, there are a plurality of air outlets or heat dissipation holes.

[0010] According to the above technical solution, heat dissipation holes are formed on the handle, and the air outlet is communicated with the heat dissipation holes to form a heat dissipation channel for air flow, so that the air enters the air outlet and flows out from the heat dissipation holes, thereby being able to utilize the flow of the air to dissipate heat from all components in the heat dissipation channel, achieving a good heat dissipation effect. In addition, the air outlet on the housing is communicated with one end of the handle, and the heat dissipation holes are located at the other end of the handle far from the housing, so that the distance of the heat dissipation channel is relatively long, enhancing the heat dissipation effect. Moreover, a plurality of air outlets and a plurality of heat dissipation holes can increase the air intake and air output, which is beneficial to introducing more air flow and increasing the air flow velocity, further enhancing the heat dissipation effect.

[0011] Preferably, a circuit component is arranged in the handle, and the circuit component is configured at a position in contact with the air flow flowing in the heat dissipation channel.

[0012] According to the above technical solution, a heat dissipation channel is formed in the handle, and the circuit component is configured at a position in contact with the air flow flowing in the heat dissipation channel. When the air flow passes through the heat dissipation channel, it can effectively cool the circuit component. Thus, by arranging the circuit component at a position in direct contact with the heat dissipation air flow, the heat dissipation effect can be further enhanced, avoiding the overheating of the circuit component, prolonging the service life of the circuit component, and further effectively prolonging the service life of the hair dryer. Moreover, it can also avoid safety accidents caused by the overheating of the circuit component. In addition, since the circuit component is arranged in the handle, there is no need to arrange it in the housing, so that the housing does not need to be designed to be relatively long in the length direction, realizing the miniaturization of the hair dryer.

[0013] Preferably, the hair dryer further includes a rectifying vane assembly arranged between the air inlet and the heater assembly. The rectifying vane assembly has a motor, and a main air duct is arranged on the side of the heater assembly far from the motor. The air inhaled through the rectifying vane assembly is heated by the heater assembly and then flows out from the main air duct.

[0014] According to the above technical solution, the rectifying vane assembly includes a motor and blades. When the motor runs, it drives the blades to rotate. The rotation of the blades causes the air to be inhaled from the air inlet into the housing of the hair dryer and flow therein to generate an air flow. As described above, the other air flow is heated by the heater assembly and then discharged from the front end of the housing through the main air duct. The heating function in the prior art is not affected, and the hair or clothes can still be dried.

[0015] Preferably, the fairing assembly further includes a fairing outer cover, and the heater assembly further includes a heating outer cover. The fairing outer cover and the heating outer cover are connected to each other, and the air outlet is provided on one of the fairing outer cover and the heating outer cover.

[0016] According to the above technical solution, the fairing outer cover and the heating outer cover are connected to each other to form a substantially enclosed space, and an air outlet is formed on one of the fairing outer cover and the heating outer cover, making the operation simple and efficient.

[0017] Preferably, a switch mechanism is provided in the handle. The switch mechanism is arranged at a position opposite to the circuit assembly, and the heat dissipation channel passes between the switch mechanism and the circuit assembly. More preferably, the switch mechanism includes a switch operating rod and a double-switch assembly. The double-switch assembly includes a first switch assembly and a second switch assembly arranged along the length direction of the handle.

[0018] According to the above technical solution, a switch mechanism is provided in the handle. The switch mechanism is arranged at a position opposite to the circuit assembly. The switch mechanism includes a switch operating rod and a double-switch assembly. The double-switch assembly includes a first switch assembly and a second switch assembly arranged in sequence along the length direction of the handle. Thus, through an innovative structural design, the heat dissipation channel passes between the switch mechanism and the circuit assembly. Specifically, since the first switch assembly and the second switch assembly are arranged along the length direction of the handle, compared with the prior art where the switch assembly is arranged along the width direction of the handle, making the width of the switch assembly almost occupy the entire width of the handle, the vertical design along the length direction saves a relatively large space for the handle, enabling sufficient space on the handle to place the circuit assembly and allowing the circuit assembly to be arranged at a position opposite to the switch mechanism.

[0019] Preferably, the switch operating rod includes a first rod body, a second rod body, and a first connecting portion and a second connecting portion respectively extending from the first rod body and the second rod body along the length direction of the handle. The first connecting portion and the second connecting portion are respectively connected to the first switch assembly and the second switch assembly.

[0020] According to the above technical solution, by operating the first rod body and the second rod body, the first connecting portion and the second connecting portion are driven to move, so that the first switch assembly and the second switch assembly realize the change of circuit on and off, and finally achieve the effect of quickly switching the hair dryer on and off or the working mode.

[0021] Advantages of the Invention

[0022] (1)According to the present invention, since an air outlet is provided between the fairing wing assembly and the heater assembly, a part of the air flow generated by the fairing wing assembly can enter the air outlet without passing through the heater assembly, while the remaining part of the air flow can still pass through the heater assembly and be discharged from the front nozzle, thereby achieving a diversion when air is introduced into the housing of the hair dryer.

[0023] (2)According to the present invention, based on the above technical effect, since the air outlet is communicated with the heat dissipation holes to form a heat dissipation channel for air to flow through, the air flow enters the air outlet and then flows out from the heat dissipation holes, so that the components in the heat dissipation channel can be cooled by the flow of the air flow, achieving a good heat dissipation effect.

[0024] (3)According to the present invention, based on the above technical effect, since a circuit assembly is provided in the handle and the circuit assembly is arranged at a position in contact with the air flow flowing in the heat dissipation channel, the circuit assembly can be effectively cooled when the air flow passes through the heat dissipation channel. In addition, since the circuit assembly is arranged in the handle, there is no need to arrange it in the housing, realizing the miniaturization of the hair dryer. As described above, the heat dissipation of the circuit assembly and the miniaturization of the hair dryer are taken into account by using the settings of the air outlet and the heat dissipation channel.

[0025] (4)According to the present invention, based on the above technical effect, since the first switch assembly and the second switch assembly are arranged along the length direction of the handle, the vertical design along the length direction saves a relatively large space for the handle, so that there is enough space on the handle to place the circuit assembly and the circuit assembly can be arranged at a position opposite to the switch mechanism. Description of the Drawings

[0026] Figure 1 is a perspective view of a prior art hair dryer.

[0027] Figure 2 is a perspective view of the hair dryer of the present invention.

[0028] Figure 3 is a cross-sectional view of the hair dryer of the present invention.

[0029] Figure 4 is a perspective view of the fairing wing assembly of the present invention.

[0030] Figure 5 is a bottom view of the housing of the present invention.

[0031] Figure 6 is a schematic diagram when the first rod body of the switch operating rod drives the first slider to move to the first position;

[0032] Figure 7 is a perspective view showing the switch operating rod of the present invention.

[0033] Figure 8 It is a perspective view showing the switch operating lever of the present invention observed from another angle.

[0034] Figure 9 Schematic diagram when the first rod body of the switch operating lever drives the first slider to move to the second position.

[0035] Description of reference numerals

[0036] 1 Housing; 11 Air inlet; 2 Rectifying vane assembly; 21 Motor; 22 Blades; 23 Rectifying outer cover; 231 Connecting column; 3 Heater assembly; 31 Heating element; 32 Heating outer cover; 4 Air outlet; 5 Handle; 6 Heat dissipation holes; 7 Heat dissipation channels; 8 Circuit assembly; 9 Switch mechanism; 91 Switch operating lever; 911 First rod body; 9111 First recess; 912 Second rod body; 9121 Second recess; 913 First connecting portion; 9131 First main body portion; 9132 First opening; 914 Second connecting portion; 9141 Second main body portion; 9142 Second opening; 915 First fixing portion; 916 Second fixing portion; 917 Pressing portion; 92 Double switch assembly; 921 First switch assembly; 9211 First groove; 9212 Second groove; 922 Second switch assembly; 9221 Second groove; 9222 Second slider; 10 Main air duct; a Intake air flow direction; b Heat dissipation air flow direction; c Main air duct air flow direction; d Length direction; e Width direction. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] The hair dryer of this embodiment, as Figures 2 - 4 shown, includes a housing 1 having an air inlet 11, a handle 5 connected to the housing 1, and a heater assembly 3 provided in the housing 1. The heater assembly 3 includes a heating element 31. An air outlet 4 is provided between the air inlet 11 and the heating element 31. The air outlet 4 guides a part of the air flowing into the housing 1 from the air inlet 11 to the handle 5.

[0039] More specifically, the hair dryer further includes a rectifying vane assembly 2 disposed in the housing 1. The rectifying vane assembly 2 includes a motor 21 and blades 22. The heating element 31 is disposed on the side opposite to the blades 22 with the motor 21 therebetween. An air outlet 4 is provided between the blades 22 of the rectifying vane assembly 2 and the heating element 31 of the heater assembly 3. It should be noted that the heating element 31 only needs to be disposed on the side opposite to the air inlet 4 with the motor 21 therebetween. The present invention has no particular limitation on the cooperation structure of the motor and the blades. In the present embodiment, the blades 22 and the heating element 31 are located on both sides of the motor 21. In some embodiments, in the case of using a high-speed motor or a brushless motor, the blades can also be inside the motor or closer to the heating element than the motor.

[0040] More specifically, as Figure 4 shown, the rectifying vane assembly 2 further includes a rectifying outer cover 23. The rectifying outer cover 23 is formed to surround the motor 21 and the blades 22 and is fixed to the housing 1, thereby providing fixed support for the motor 21. In the present embodiment, the rectifying outer cover 23 is connected to the housing of the motor 21 by a plurality of connecting columns 231, and the blades 22 are formed on the side of the motor 21 away from the heating element 31.

[0041] As Figure 2 and Figure 5 shown, the heating element 31 is formed as one or more and is fixed to the housing of the motor 21. The heater assembly 3 further includes a heating outer cover 32 surrounding the heating element 31. The rectifying outer cover 33 and the heating outer cover 32 are connected to each other to form a substantially enclosed space, so that when external air is introduced, it passes through this space and is blown out.

[0042] It should be noted that in the present embodiment, the structure and shape of the heating element 31 are not particularly limited. Those skilled in the art can understand that the heating element 31 can be any element that can be energized to generate heat to heat the passing air flow. For example, in some embodiments, the heating element 31 can be a heating sheet or a heating wire, which all fall within the protection scope of the present invention.

[0043] In the present embodiment, as Figure 3 and Figure 5 shown, two notches are formed on the rectifying outer cover 23 to form the air outlet 4. In the present embodiment, the two air outlets 4 are symmetrically arranged. The symmetrically arranged two air outlets 4 can, on the one hand, increase the air intake volume so that more air flow enters the handle 5 for heat dissipation; on the other hand, the air flow used for heat dissipation can evenly enter the handle 5 from the two air outlets 4 on both sides, ensuring the stability of heat dissipation.

[0044] Among them, the setting position of the air outlet 4 is not particularly limited in the present invention, and as long as it is set between the blade 22 of the fairing wing assembly 2 and the heating element 31 of the heater assembly 3, it can be applicable to the present invention. For example, in some embodiments, the air outlet 4 can also be set on the heating outer cover 32.

[0045] In the present embodiment, the shape of the air outlet 4 is exemplified as a rectangle, but the setting of other shapes of the air outlet 4 is also applicable to the present invention. In some other embodiments of the present invention, the shape of the air outlet 4 can also adopt other shapes, such as a circle.

[0046] In addition, in some other embodiments of the present invention, more than three air outlets 4 are adopted. The number of the air outlets 4 is related to the required heat dissipation air volume and the size of the air outlet 4. When the size of the air outlet 4 is large or the required heat dissipation air volume is small, the number of the air outlets 4 can be reduced, and vice versa, the number of the air outlets 4 can be increased.

[0047] The handle 5 is preferably integrally formed with the housing 1 by injection molding, so that the installation process can be reduced, and the overall forming can also make the thickness of the housing 1 uniform, improving the structural strength and overall stability of the housing 1. A communicating hollow internal space is formed in the housing 1 and the handle 5 for arranging the fairing wing assembly 2 and the heater assembly 3 as described above, as well as the following circuit assembly and switch mechanism. Heat dissipation holes 6 are formed on the handle 5. Preferably, as Figure 3 shown, the heat dissipation holes 6 are arranged at the lower end of the handle 5. Specifically, in the present embodiment, the "lower end" refers to the end far from the housing 1. The heat dissipation holes 6 only need to be arranged within this range at the lower end, and do not necessarily need to be arranged at the lowest edge of the handle 5. The formation method of the heat dissipation holes 6 is not particularly limited here. For example, the heat dissipation holes 6 can be formed by mechanically opening holes on the handle 5. Preferably, when the handle 5 is formed by injection molding, the mold is designed so that the heat dissipation holes 6 are directly formed during injection molding, avoiding secondary hole-opening processing. In the present embodiment, the number of the heat dissipation holes 6 is related to the actual heat dissipation needs and is not limited here. Those skilled in the art can make appropriate adjustments according to actual needs. In the present embodiment, the preferred shape of the heat dissipation holes 6 is a rectangle. It should be noted that in some other embodiments of the present invention, the shape of the heat dissipation holes 6 can also use other shapes, such as a circle. Any simple replacement of the shape of the heat dissipation holes does not exceed the protection scope of the present invention.

[0048] The following describes each component in the handle 5.

[0049] First, based on Figure 2 、 Figure 3 , the circuit assembly 8 and the switch mechanism 9 are described. As Figure 3As shown, the circuit component 8 is disposed in the handle 5 and is disposed at a position opposite to the switch mechanism 9. Herein, the term "opposite" means that the positions of the circuit component 8 and the switch mechanism 9 are facing or opposite to each other in the longitudinal direction d. In the prior art, the circuit component 8 is generally disposed in the housing 1. In contrast, in the present embodiment, the circuit component 8 is disposed in the handle 5, thereby saving the space of the housing 1, facilitating the miniaturization of the hair dryer, and enabling heat dissipation by using the heat dissipation channel 7 described later. In the present embodiment, the circuit component 8 is a printed circuit board and its accessories, but the specific manner is not particularly limited as long as it can be connected to the power supply to control the hair dryer.

[0050] As Figure 6 shown, the switch mechanism of the present invention includes a switch operating lever 91 and a double switch assembly 92, and the double switch assembly 92 includes a first switch assembly 921 and a second switch assembly 922. Herein, the switch assembly refers to a component that can control the operation of an electrical appliance based on the on-off function and thus serves as a switch, and its structure is not limited herein. In addition, those skilled in the art can understand that its circuit structure can also be designed correspondingly according to actual needs, and will not be described in detail herein. Figure 6 The longitudinal direction d and the width direction e of the switch mechanism are shown. When the switch mechanism is applied to a hair dryer, the longitudinal direction d is consistent with the longitudinal direction of the hair dryer handle. As Figure 6 and Figure 7 shown, the first switch assembly 921, the switch operating lever 91, and the second switch assembly 922 are sequentially arranged along the longitudinal direction d of the switch mechanism. Therefore, compared with the case where the switch mechanism in the prior art is arranged along the width direction of the handle, i.e., the transverse direction, the space occupied by the switch mechanism in the width direction can be significantly saved, thereby providing space for installing other components, such as installing the circuit component 8. It should be noted that although the switch mechanism is applied to a hair dryer in the present embodiment, the switch mechanism can be applied to all household appliances that require a simple layout.

[0051] Specifically, as Figure 7 and Figure 8 shown, the switch operating lever 91 includes a first rod main body 911, a first connecting portion 913 extending from the first rod main body 911 in the longitudinal direction d, a second rod main body 912, and a second connecting portion 914 extending from the second rod main body in the longitudinal direction d.

[0052] More specifically, the first connecting portion 913 includes a first main body portion 9131 and a first opening portion 9132 formed at one end far from the first rod main body 911, and the second connecting portion 914 includes a second main body portion 9141 and a second opening portion 9142 formed at one end far from the second rod main body 912.

[0053] The dimension of the first opening portion 9132 in the width direction e is larger than that of the first main body portion 9131, and the dimension of the second opening portion 9142 in the width direction e is larger than that of the second main body portion 9141, thereby avoiding possible interference caused by sliding between them.

[0054] On one side of the first rod main body 911 facing the first switch assembly 921 and the second switch assembly 922, a first recessed portion 9111 is provided. On one side of the second rod main body 912 facing the first switch assembly 921 and the second switch assembly 922, a second recessed portion 9121 is provided. The switch operating lever 91 further includes a first fixing portion 915 integrally formed with the first connecting portion 913 and fixed to the first recessed portion 9111, and a second fixing portion 916 integrally formed with the second connecting portion 914 and fixed to the second recessed portion 9121.

[0055] It should be noted that the "recessed portion" mentioned here refers to a portion formed by being recessed in a direction away from the first connecting portion 913 and the second connecting portion 914. The first fixing portion 915 and the second fixing portion 916 only need to be recessed and fixed to the first recessed portion 9111 and the second recessed portion 9121 in the same way, and their shapes are not particularly limited.

[0056] On the other side of the switch operating lever 91, a pressing portion 917 extending in the width direction e orthogonal to the length direction d is provided. Preferably, both the first recessed portion 9111 and the second recessed portion 9121 are formed inside the pressing portion 917. Here, the "formed inside the pressing portion 917" means that the first recessed portion 9111 and the second recessed portion 9121 are recessed and formed as an inner part of the pressing portion 917 itself. When the pressing portion 917 is pressed, the first recessed portion 9111 and the second recessed portion 9121 are directly stressed, and the first fixing portion 915 and the second fixing portion 916 connected thereto are also directly conducted with the force and can drive the first opening portion 9132 and the second opening portion 9142 to move accordingly, avoiding secondary transmission of the force and improving the linkage effect. The user can easily and conveniently use the switch operating lever 91 through the pressing portion 917. Preferably, in this embodiment, the pressing portion 917 is formed into two, and are respectively provided on one side of the first rod main body 911 away from the first switch assembly 921 and the second switch assembly 922 and on one side of the second rod main body 912 away from the first switch assembly 921 and the second switch assembly 922, so that they can be operated separately.

[0057] The switch operating lever 91 is slidably connected to the first switch assembly 921 and the second switch assembly 922. Specifically, on one side of the first switch assembly 921 facing the switch operating lever 91, a first groove 9211 extending along the length direction d and a first slider 9212 capable of sliding in the first groove 9211 are provided. On one side of the second switch assembly 922 facing the switch operating lever 91, a second groove 9221 extending along the length direction d and a second slider 9222 capable of sliding in the second groove 9221 are provided.

[0058] During assembly, the first opening 132 is installed on the first slider 9212, and the second opening 9142 is installed on the second slider 9222, so that the switch operating lever 91 is linked with the first switch assembly and the second switch assembly 922.

[0059] It should be noted that the shape or structure of the first opening 9132 or the second opening 9142 is not particularly limited and can be formed into any opening shape that can be installed on the first slider 9212 or the second slider 9222. In this embodiment, the case where both the first opening 9132 and the second opening 9142 are formed into a rectangular hollow frame is illustrated. Specifically, the first slider 9212 and the second slider 9222 are also formed into square blocks matching the rectangle, so that the first opening 9132 and the second opening 9142 can be closely sleeved on the first slider 9212 and the second slider 9222.

[0060] Next, based on Figure 6 and Figure 9 , the operation of the switch mechanism of this embodiment will be described. Figure 6 is a schematic diagram when the first rod body 911 of the switch operating lever 91 drives the first slider 9212 to move to the first position P1; Figure 9 Schematic diagram when the first rod body 11 of the switch operating lever drives the first slider 9212 to move to the second position P2. Since the operation of the second rod body 912 is similar to that of the first rod body 911, the repeated description of the operation of the second rod body 912 is omitted.

[0061] Figure 6 and Figure 9The first position P1 and the second position P2 in the first switch assembly 921 are shown. In the present embodiment, the first switch assembly 921 is used to control the startup or disconnection of the hair dryer. When the first slider 9212 is in the first position P1, the hair dryer is in the off state. When the first slider 9212 is in the second position P2, the hair dryer is in the startup state, and the motor 21 in the housing 1 starts to operate to introduce external air. The number and functions of the first position P1 and the second position P2 are exemplary. Those skilled in the art can understand that, according to actual needs, setting a third position P3 also falls within the protection scope of the present invention. The first position P1 and the second position P2 can also be set to be related to other controls, such as related to cold and heat or related to power. For example, according to the cold and heat relationship, the first position P1 can be set to correspond to the cold air mode and the second position P2 can be set to correspond to the hot air mode, or according to the power, the first position P1 can be set to correspond to the high power mode and the second position P2 can be set to correspond to the low power mode. The first switch assembly 21 can be provided with different pins to be connected to the circuit assembly 8, so as to change the functions of the first position P1 and the second position P2. These circuit designs belong to the prior art, so no more description will be given. The structure and function of the second switch assembly 922 are similar to those of the first switch assembly 921. Similarly, the specific functions of the first position P1 and the second position P2 can be set according to needs.

[0062] As Figure 6 shown, the first opening 9132 of the first connecting portion 913 is mounted on the first slider 9212. Specifically, when the first slider 9212 is in the first position P1, the hair dryer is in the off state. "The first slider 9212 is in the first position P1" means that the initial position of the first slider 9212 is the first position P1 or it moves from the second position P2 to the first position P1 under the drive of the first rod body 911. As Figure 9 shown, when the user pushes up the pressing portion 917, the first rod body 911 moves upward due to the force, so as to drive the first connecting portion 913 to move upward, and the first opening 9132 also drives the first slider 212 to move upward and stay in the second position P2. "Staying in the second position P2" can be achieved by various methods in the prior art, which will not be limited here. For example, an elastically deformable engaging member is provided. After the first slider 9212 passes over the engaging member, it is supported due to the engaging member restoring its original state and stays in the second position P2. When the first slider 9212 stays in the second position P2, the connection between the first switch assembly 921 and the circuit assembly 8 is triggered, and the hair dryer is started. Here, the triggering method is not particularly limited. Under the technical solution of the present invention, a simple replacement of the triggering method, such as using the cooperation between the first slider 9212 and the contact switch, etc., does not exceed the protection scope of the present invention.

[0063] In this embodiment, a dual-switch assembly 2 is provided and its layout is designed. Specifically, a first switch assembly 921, a switch operating lever 91, and a second switch assembly 922 are sequentially arranged along the length direction d of the switch mechanism, thereby saving lateral space by means of the overall design in the length direction. In addition, in this embodiment, the specific structure of the switch operating lever 91 and the structure of the switch assembly cooperating therewith are also designed, so that the sliding fit between the switch operating lever 91 and the dual-switch assembly 92 is smooth, thereby improving the operation efficiency.

[0064] Next, based on Figure 3 the heat dissipation process of the present invention will be described.

[0065] In Figure 3 , a represents the intake air flow direction, b represents the heat dissipation air flow direction, and c represents the main air duct air flow direction.

[0066] First, the rectifying vane assembly 2 includes a motor 21 and blades 22. When the motor 21 operates, it drives the blades 22 to rotate, and the rotation of the blades 22 causes external air to be sucked into the housing 1 of the hair dryer from the rear end along the intake air flow direction a. The rear end mentioned here refers to Figure 3 the left end in

[0067] The air entering the housing 1 forms an intake air flow and further flows forward. Most of the air flow continues to flow without changing direction, passes through the heating element 31 of the heater assembly 3 and is heated, and then is blown out from the front end of the hair dryer along the main air duct 10 for drying hair or clothes. In some other embodiments of the present invention, the hair dryer is sometimes in the cold air mode. At this time, the heater assembly 3 does not heat, and the intake air flow is directly blown out from the front end of the hair dryer along the main air duct 10.

[0068] The front end mentioned here does not specifically refer to a certain specific installation direction. Specifically, in this embodiment, it refers to Figure 3 the right end in

[0069] Secondly, the heat dissipation path via the air outlet 4 will be described.

[0070] An air outlet 4 is provided between the blade 22 of the fairing wing assembly 2 and the heating element 31 of the heater assembly 3, so that a part of the air flow formed by the intake air flow entering the housing 1 can enter the air outlet 4 without being heated by the heater assembly 3. One or more notches are formed in the fairing 23 to form the air outlet 4, which is preferably provided on the side close to the handle 5, so that the air flow passing through the air outlet 4 can flow downward. The "up and down" mentioned here refers to the positional relationship where the housing 1 is above and the handle 5 is below.

[0071] When the air flow passing through the air outlet 4 flows downward, it will enter the hollow internal space formed by the communication between the housing 1 and the handle 5. Since the heat dissipation holes 6 are located at the other end of the handle 5, a heat dissipation channel 7 is formed between the air outlet 4 and the heat dissipation holes 6. The heat dissipation air flow enters the heat dissipation channel 7 from the air outlet 4 and flows along the heat dissipation air flow. During this flow process, the heat dissipation air flow can absorb the heat of the relevant components passing through it, dissipate heat from them well, and then flow out of the heat dissipation holes 6 with this heat. It should be noted that the heat dissipation air flow mainly flows along the heat dissipation channel 7, but in fact, due to the nature of the gas, it will also flow to other parts of the hollow internal space, such as the side of the circuit assembly 8 far away from the switch mechanism 9, and can also dissipate heat from this part or other components.

[0072] More specifically, in this embodiment, the circuit assembly 8 is arranged at a position corresponding to the switch mechanism 9 in the handle 5. When the circuit assembly 8 works, the heat generated makes the temperature of the circuit assembly 8 rise rapidly. If the heat is not dissipated in time, the temperature will continue to rise, and the circuit assembly 8 may fail and be damaged due to overheating, and the reliability of the hair dryer will decrease. Therefore, it is very important to dissipate heat from the circuit assembly 8. As described above, in this embodiment, a double-switch assembly is provided and its layout is designed. Specifically, the first switch assembly 921, the switch operating rod 91, and the second switch assembly 922 are arranged in sequence along the length direction of the switch mechanism, so as to save the lateral space by using the overall design in the length direction, and form a gap between the circuit assembly 8 and the switch mechanism 9 to constitute a part of the heat dissipation channel 7. When the heat dissipation air flow passes through the heat dissipation channel 7, it effectively cools the circuit assembly 8. Thus, cooling through the heat dissipation channel 7 can avoid the temperature of the circuit assembly 8 being too high, extend the service life of the circuit assembly 8, and further effectively extend the service life of the hair dryer.

[0073] The heat dissipation air flow that has passed through the heat dissipation channel 7 absorbs the heat of each component and then flows out of the heat dissipation holes 6 to complete this heat dissipation action.

[0074] Those skilled in the art can understand that the specific technical features in each embodiment can be adaptively split or combined. Such splitting or combination of the specific technical features will not cause the technical solution to deviate from the principle of the present invention. Therefore, the technical solutions after splitting or combination will all fall within the protection scope of the present invention.

[0075] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0076] So far, the technical solutions of the present invention have been described in conjunction with multiple embodiments shown in the accompanying drawings. However, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A hair dryer, comprising a housing having an air inlet, a handle connected to the housing, and a heater assembly disposed in the housing, the heater assembly including a heating element, characterized in that, An air outlet is provided between the air inlet and the heating element, and the air outlet guides the air flowing into the housing from the air inlet to the handle. Heat dissipation holes are formed in the handle, and the air outlet and the heat dissipation holes are communicated to form a heat dissipation channel for the air to flow through. A circuit component is provided in the handle, and the circuit component is arranged at a position in contact with the air flowing in the heat dissipation channel. A switch mechanism is provided in the handle, and the switch mechanism is arranged at a position opposite to the circuit component. A gap is formed between the circuit component and the switch mechanism to constitute a part of the heat dissipation channel. The switch mechanism includes a switch operating rod and a double-switch component. The double-switch component includes a first switch component and a second switch component. The first switch component, the switch operating rod, and the second switch component are sequentially arranged along the length direction of the switch mechanism. The switch operating rod includes a first rod body, a second rod body, and a first connecting portion and a second connecting portion respectively extending from the first rod body and the second rod body along the length direction of the handle. The first connecting portion and the second connecting portion are respectively slidably connected to the first switch component and the second switch component. The first connecting portion and the second connecting portion are respectively provided with a first opening and a second opening. The first opening is sleeved on the first slider of the first switch component, and the second opening is sleeved on the second slider of the second switch component. The first slider and the second slider slide along the length direction of the handle.

2. The hair dryer according to claim 1, wherein, It further includes a rectifying vane assembly provided between the air inlet and the heater assembly. The rectifying vane assembly has a motor. A main air duct is provided on the side of the heater assembly away from the motor. The air inhaled through the rectifying vane assembly is heated by the heater assembly and then flows out from the main air duct.

3. The hair dryer according to claim 2, wherein, The rectifying vane assembly further includes a rectifying outer cover, and the heater assembly further includes a heating outer cover. The rectifying outer cover is connected to the heating outer cover, and the air outlet is provided on one of the rectifying outer cover and the heating outer cover.

4. The hair dryer according to claim 1, characterized in that, The heat dissipation holes are formed at one end of the handle away from the housing.

5. The hair dryer according to claim 1 or 4, characterized in that, A plurality of air outlets or heat dissipation holes are formed.

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