Hair drier

Abstract

The embodiment of the utility model relates to the technical field of hair driers, in particular to a hair drier, which is characterized by comprising a shell, an air inlet, an air outlet, an air outlet, an air outlet and an air outlet, and the shell is provided with a containing cavity, an air blowing opening and an air suction opening, and both the air blowing opening and the air suction opening are communicated with the containing cavity; the fan assembly is arranged in the containing cavity, and the fan assembly is closer to the air suction opening than the heating assembly; the circuit board is arranged on the shell, the circuit board is connected with the fan assembly, at least part of the circuit board is located in the containing cavity, and the part, located in the containing cavity, of the circuit board is provided with a heating component; the fan assembly is used for driving external airflow to enter the containing cavity from the air suction opening and driving the airflow to sequentially pass through the heating components and then be output from the air blowing opening. By means of the mode, active heat dissipation of the circuit board can be achieved through the airflow formed by the fan assembly in the containing cavity, the blower does not need to be provided with passive heat dissipation components, the heat dissipation efficiency of the circuit board is improved, and the manufacturing cost of the blower is reduced.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of hair dryers, in particular to a hair dryer. Background Art

[0002] A hair dryer is a device that uses an electric motor to drive the fan blades to rotate at high speed to form an air flow. A heating wire can be set at the air outlet so that the hair dryer can blow out high-temperature and high-speed air flow, thereby quickly drying hair or quickly removing dust from the surface of objects.

[0003] In the process of realizing the present invention, the inventors of the present invention found that: currently, the existing hair dryer includes a circuit board, a motor, fan blades and a shell. The circuit board is provided with components such as capacitors and resistors. Such components will generate a large amount of heat when working. In order to extend the service life of the components, it is necessary to provide corresponding heat dissipation devices on the circuit board to improve the heat dissipation efficiency of the heat-generating components. However, the passive heat dissipation efficiency of the heat dissipation device is obviously insufficient, and the existence of the heat dissipation device also leads to an increase in the overall manufacturing cost of the hair dryer. Utility Model Content

[0004] The main technical problem solved by the embodiments of the utility model is to provide a hair dryer that can eliminate the need to set heat dissipation components for the heat-generating components on the circuit board.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a hair dryer, including a shell, provided with a receiving cavity, a blowing port and an air suction port, and the blowing port and the air suction port are both connected to the receiving cavity; a fan assembly is arranged in the receiving cavity, and the fan assembly is close to the air suction port; a circuit board is arranged in the shell, and the circuit board is connected to the fan assembly, and the circuit board is at least partially located in the receiving cavity, and the part of the circuit board located in the receiving cavity is provided with a heating component; wherein, the fan assembly is used to drive the external airflow from the air suction port into the receiving cavity, and drive the airflow to pass through the heating components in sequence and then be output from the blowing port.

[0006] Optionally, the hair dryer also includes a heating component, which is arranged in the receiving cavity; the heating component is located between the heating component and the fan component, and the airflow entering the receiving cavity from the air intake port passes through the heating component and the heating component in sequence and is output from the air outlet.

[0007] Optionally, the accommodating cavity includes a first accommodating cavity and a second accommodating cavity, and the first accommodating cavity is connected to the second accommodating cavity; the circuit board includes a first plate body and a second plate body, the first plate body and the second plate body are connected, and the first plate body is provided with the heating component; the shell includes a cylinder body and a handle part, the handle part is connected to the cylinder body, the first accommodating cavity, the blowing port and the suction port are all arranged in the cylinder body, the first plate body, the heating component and the fan assembly are all arranged in the first accommodating cavity, the blowing port, the heating component, the first plate body, the fan assembly and the suction port are arranged in sequence; the second accommodating cavity is arranged in the handle part, and the second plate body is arranged in the second accommodating cavity.

[0008] Optionally, the first plate body and the second plate body are integrally formed.

[0009] Optionally, there is at least one gap between the first plate and the cylinder on the inner wall of the first receiving chamber, and the at least one gap allows the airflow to flow from the fan assembly to the heating assembly.

[0010] Optionally, the thickness direction of the first plate is perpendicular to the direction from the fan assembly to the heating assembly.

[0011] Optionally, the cylinder further includes an inner cylinder, the inner cylinder includes a first frame and a second frame connected to each other, the fan assembly and the first plate are arranged on the first frame, and the heating assembly is arranged on the second frame.

[0012] Optionally, the first frame includes a first snap-fitting portion and a second snap-fitting portion, the first snap-fitting portion and the second snap-fitting portion overlap each other; the first snap-fitting portion is provided with a first avoidance opening, the second snap-fitting portion is provided with a second avoidance opening, the first avoidance opening corresponds to the second avoidance opening; a part of the connection position of the first plate body and the second plate body is accommodated in the first avoidance opening, and another part of the connection position of the first plate body and the second plate body is accommodated in the second avoidance opening.

[0013] Optionally, the first buckle portion extends with a first buckle, and the first buckle portion is provided with a first clamping platform, the second buckle portion extends with a second buckle, and the second buckle portion is provided with a second clamping platform, the first buckle is clamped to the second clamping platform, and the second buckle is clamped to the first clamping platform to fix the first buckle portion and the second buckle portion.

[0014] Optionally, the inner wall ring of the first buckling portion is provided with a first abutting portion, and the inner wall ring of the second buckling portion is provided with a second abutting portion, and the first abutting portion and the second abutting portion correspond to each other, so that when the fan assembly is accommodated in the first frame, the fan assembly abuts against the first abutting portion and the second abutting portion.

[0015] The beneficial effects of the embodiment of the utility model are as follows: different from the prior art, the embodiment of the utility model provides a hair dryer including a shell, provided with a receiving chamber, a blowing port and an air suction port, the blowing port and the air suction port are both connected to the receiving chamber; a fan assembly is arranged in the receiving chamber, the fan assembly is closer to the air suction port than the heating assembly; a circuit board is arranged in the shell, the circuit board is connected to the fan assembly, the circuit board is at least partially located in the receiving chamber, and the portion of the circuit board located in the receiving chamber is provided with a heating component; wherein the fan assembly is used to drive the external air flow from the air suction port into the receiving chamber, and drive the air flow to pass through the heating component in sequence and then be output from the blowing port. Through the above structure, the embodiment of the utility model can enable the hair dryer to use the air flow formed in the fan assembly to achieve active heat dissipation of the circuit board, and the hair dryer no longer needs to be provided with a passive heat dissipation component, thereby improving the heat dissipation efficiency of the circuit board and reducing the manufacturing cost of the hair dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the exploded structure of the hair dryer provided by an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the assembly structure of a hair dryer provided by an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the housing provided by an embodiment of the present utility model;

[0020] Figure 4 This is a schematic cross-sectional view of a hair dryer provided by an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the inner cylinder provided by an embodiment of the utility model from one perspective;

[0022] Figure 6It is a schematic diagram of the three-dimensional structure of the inner cylinder provided by an embodiment of the utility model from another perspective. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when a component is described as being "fixed to" another component, it can be directly on the other component, or one or more components can be present in between. When a component is described as being "connected to" another component, it can be directly connected to the other component, or one or more components can be present in between. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the relevant listed items.

[0025] See also Figure 1 and Figure 2 The hair dryer 1000 includes a shell 1, a fan assembly 2 and a circuit board 3. The fan assembly 2 and the circuit board 3 are both arranged in the shell 1. The fan assembly 2 is used to generate accelerated airflow inside the shell 1. The circuit board 3 controls the working state of the fan assembly 2. The circuit board 3 is used to control the working state of the fan assembly 2, such as speed, rotation time, power on and off, etc.

[0026] For the above-mentioned housing 1, please refer to Figure 3 and Figure 4The shell 1 is provided with a receiving chamber 11, an air blowing port 12 and an air suction port 13, and the air blowing port 12 and the air suction port 13 are both connected to the receiving chamber 11, thereby forming a complete air supply duct; the fan assembly 2 is arranged in the receiving chamber 11, and the fan assembly 2 is close to the air suction port 13. The fan assembly 2 is used to form a negative pressure at the air suction port 13, so that the air of the external environment is sucked into the receiving chamber 11, and the air is accelerated by the fan assembly 2 and discharged through the receiving chamber 11 and the air blowing port 12, so that a continuous airflow is formed in the air supply duct when the fan assembly 2 is in a working state; the circuit board 3 is arranged in the shell 1, and the circuit board 3 is connected to the fan assembly 2. The circuit board 3 is at least partially located in the receiving chamber 11, and the part of the circuit board 3 located in the receiving chamber 11 is provided with heat-generating components (not shown in the figure), wherein the heat-generating components include capacitors, resistors, control chips, etc. The heat-generating components will generate a lot of heat in the working state. In order to avoid the heat affecting the working stability and service life of the heat-generating components, it is necessary to apply certain heat dissipation conditions to them. In this embodiment, the fan assembly 2 is used to actively dissipate heat for them.

[0027] Specifically, the fan assembly 2 is used to drive external airflow from the air inlet 13 into the receiving chamber 11, and then drive the airflow through the heat-generating components in sequence before being output from the air outlet 12. The airflow generated by the fan assembly 2 actively dissipates heat from the heat-generating components disposed on the circuit board 3, eliminating the need for corresponding heat-dissipating components on the circuit board 3 to assist in the passive heat dissipation of the heat-generating components. This improves the heat dissipation efficiency of the circuit board 3, saves the space required for the placement of the circuit board 3, and, because no heat-dissipating components are required, reduces the overall manufacturing cost of the hair dryer 1000.

[0028] For the fan assembly 2 above, see Figure 4 The fan assembly 2 includes fan blades (not marked) and a motor (not marked). The fan blades are fixed to the output shaft of the motor, and the rotation of the output shaft of the motor drives the fan blades to rotate.

[0029] It is worth noting that, considering the different wind speeds required by different hair dryers 1000, the motors include but are not limited to high-speed brushless motors, low-speed motors, etc. In order to ensure sufficient heat dissipation of the circuit board 3, this embodiment preferably uses a high-speed brushless motor.

[0030] In order to reduce the impact of vibration generated by the fan assembly 2 during operation on the user experience, in some embodiments, the fan assembly 2 includes a buffer bushing (not marked), which is mounted on the motor to absorb the vibration generated during the operation of the motor.

[0031] In some embodiments, as Figure 4As shown, the hair dryer 1000 also includes a heating component 4, which is arranged in the receiving cavity 11. The heating component 4 is electrically connected to the circuit board 3. The heating component 4 is used to heat the surrounding air, and the circuit board 3 is used to control the heating component 4. The detailed control parameters include but are not limited to heating time, heating power, etc. The heating component is located between the heating component 4 and the fan component 2. The airflow entering the receiving cavity from the air intake 13 passes through the heating component and the heating component 4 in turn and is output from the air outlet 12, so that the above-mentioned airflow cools the heating component after passing through the heating component and the airflow is heated while passing through the heating component 4, so that the air outlet 12 blows out hot air with a higher temperature than the airflow blown out by the hair dryer 1000 without the heating component 4.

[0032] It is worth noting that the heating power of the heating component 4 is adjustable, that is, the heating power of the heating component 4 is adjusted through the circuit board 3 to meet the user's demand for airflow at different temperatures.

[0033] For the above heating element 4, please refer to Figure 4 The heating assembly 4 includes a heating element 41 and an insulating bracket 42. The heating element 41 is arranged on the insulating bracket 42. The insulating bracket 42 is used to support the heating element 41 and isolate the heat generated by the heating element 41 from being transferred to other directly contacted components. Specifically, the heat of the heating element 41 is prevented from being transferred to other internal components such as the shell 1 and the circuit board 3 through the insulating bracket 42.

[0034] It is understandable that the hair dryer 1000 further includes a control button (not shown), which cooperates with the control circuit of the circuit board 3 to adjust the functions of the hair dryer 1000, thereby forming a complete human-computer interaction.

[0035] In some embodiments, see Figure 4 A dustproof component 6 is provided at the air inlet 13 to prevent foreign matter such as dust in the external environment from entering the receiving chamber, thereby preventing foreign matter from entering and causing malfunction of components in the receiving chamber 11.

[0036] For the above-mentioned receiving chamber 11, please refer to Figure 4 The receiving chamber 11 includes a first receiving chamber 111 and a second receiving chamber 112 , and the first receiving chamber 111 is communicated with the second receiving chamber 112 .

[0037] For board 3 above, see Figure 4 The circuit board 3 includes a first board 31 and a second board 32. The first board 31 and the second board 32 are connected. The first board 31 is provided with heating components. The heating components are concentrated on the first board 31 to facilitate the fan assembly 2 to actively dissipate heat.

[0038] It can be understood that the connection method of the first plate body 31 and the second plate body 32 includes but is not limited to an integral connection, a split connection, etc. When an integral connection method is adopted, the first plate body 31 and the second plate body 32 are integrally formed. The shell 1 of the hair dryer 1000 only needs to set a fixing structure for the second plate body 32, such as a slot, abutment column, etc., to fix the second plate body 32 in the second receiving cavity 112. Since the first plate body 31 and the second plate body 32 are integrally formed, the two have a certain rigidity. Therefore, there is no need to set a separate fixing structure for the first plate body 31, or only a slot that adapts to its shape needs to be simply set on the first plate body, so that the structure of the hair dryer 1000 is simpler. When a split connection method is adopted, the first plate 31 and the second plate 32 are connected by a wire. It can be understood that the split first plate 31 and the second plate 32 need to be separately provided with a fixed structure to prevent the first plate 31 and the second plate 32 from uncontrollable displacement in the shell 1, and the split first plate 31 and the second plate 32 make the placement direction of the first plate 31 in the first receiving cavity 111 adjustable to any angle.

[0039] In this embodiment, preferably, the first plate body 31 and the second plate body 32 are integrally formed.

[0040] In some embodiments, see Figure 4 The shell 1 also includes a cylinder 14 and a handle portion 15, the cylinder 14 is connected to the handle portion 15, the first accommodating cavity 111, the blowing port 12 and the suction port 13 are all arranged in the cylinder 14, the first plate 31, the heating component 4 and the fan component 2 are all arranged in the first accommodating cavity 111, the blowing port 12, the heating component 4, the first plate 31, the fan component 2 and the suction port 13 are arranged in sequence; the second accommodating cavity 112 is arranged in the handle portion 15, and the second plate 32 is arranged in the second accommodating cavity 112.

[0041] In some embodiments, the handle portion 15 is provided with a communication hole (not shown) for passing a cable and connecting to an external power source.

[0042] It can be understood that the connection methods between the barrel 14 and the handle portion 15 include but are not limited to direct connection, snap connection, rotation connection, etc. The specific connection methods will not be illustrated one by one in this embodiment.

[0043] It is understandable that the cross-sectional shape of the cylinder 14 includes but is not limited to a circle, an ellipse, a triangle with chamfered corners, any irregular shape, or a combination of several of them.

[0044] In some embodiments, the shell further includes an outer cylinder 16 , which is sleeved on the cylinder body 14 , and an outer surface of the outer cylinder 16 is provided with certain patterns or decorations to enhance the overall aesthetics of the hair dryer 1000 .

[0045] In some embodiments, there is at least one gap between the first plate body 31 and the cylinder body 14 on the inner wall of the first receiving cavity 111. The at least one gap allows airflow to flow from the fan assembly 2 to the heating assembly 4. The setting of the gap ensures that the airflow of the fan assembly 2 can flow smoothly in the first receiving cavity 111, so that the high-temperature air radiated to the surrounding area by the heating components on the first plate body 31 can be carried away by the airflow.

[0046] In some embodiments, the thickness direction of the first plate 31 is perpendicular to the direction from the fan assembly 2 to the heating assembly 4, so that when the first plate 31 is disposed in the first receiving cavity 111, the obstruction of the airflow blown out by the fan assembly 2 is reduced to a minimum.

[0047] In other embodiments, see Figure 5 and Figure 6 The barrel 14 also includes an inner barrel 141, which is used to provide secondary protection for the internal components of the hair dryer 1000, preventing the external shell 1 from being hit, squeezed, etc., which may cause damage to the internal components and improve the durability of the hair dryer 1000. Figure 5 As shown, the inner cylinder 141 includes a first frame 1411 and a second frame 1412 connected to each other. The fan assembly 2 and the first plate 31 are arranged on the first frame 1411, and the heating assembly 4 is arranged on the second frame 1412.

[0048] It is worth noting that the first frame 1411 and the second frame 1412 can be designed as an integrated body or a split body. In the present embodiment, it is preferred that the first frame 1411 and the second frame 1412 are designed as a split body.

[0049] Specifically, the split design of the first frame 1411 and the second frame 1412 is to distinguish the components in the cylinder 14 according to their functions and working environments. The first frame 1411 only serves as a part for accommodating the fan assembly 2 and the first plate 31. The first frame 1411 should be tightly fitted with the side surfaces in the thickness direction of the fan assembly 2 and the first plate 31, so that the fan assembly 2 and the first plate 31 will not shake in the direction perpendicular to the axis of the cylinder 14 in the working state, affecting the user's experience; the second frame 1412 is the part that mainly accommodates the heating assembly 4. Considering the high temperature effect of the heating assembly 4 on the surrounding air, the material of the second frame 1412 can be selected from heat-resistant or heat-insulating materials that can withstand high temperatures, so as to avoid the material in the area where the second frame 1412 is located from accelerating aging of the shell 1 due to long-term use.

[0050] It can be understood that the connection method of the first frame 1411 and the second frame 1412 includes but is not limited to snap connection, screw connection, etc., or the first frame 1411 and the second frame 1412 are fixed in the cylinder 14 respectively by setting corresponding limit grooves, limit parts, etc. in the cylinder 14.

[0051] For the first 1411 mentioned above, see Figure 5 The first frame 1411 includes a first buckling portion 1411a and a second buckling portion 1411b, and the first buckling portion 1411a and the second buckling portion 1411b are covered. The split design of the first buckling portion 1411a and the second buckling portion 1411b facilitates the installation and disassembly of internal components such as the fan assembly 2; wherein the first buckling portion 1411a is provided with a first avoidance opening 1411a1, and the second buckling portion 1411b is provided with a second avoidance opening 1411b1, and the first avoidance opening 1411a1 corresponds to the second avoidance opening 1411b1. Specifically, when the first buckling portion 1411a and the second buckling portion 1411b are covered, the first avoidance opening 1411a1 Together with the second avoidance opening 1411b1, an avoidance through hole (not marked) is enclosed to form a avoidance through hole for accommodating the connection position of the first plate body 31 and the second plate body 32; specifically, a part of the connection position of the first plate body 31 and the second plate body 32 is accommodated in the first avoidance opening 1411a1, and the other part of the connection position of the first plate body 31 and the second plate body 32 is accommodated in the second avoidance opening 1411b1. When the first snap-fitting portion 1411a and the second snap-fitting portion 1411b are covered, the connection position of the first plate body 31 and the second plate body 32 is clamped by the first avoidance opening 1411a1 and the second avoidance opening 1411b1, thereby limiting the connection position of the first plate body 31 and the second plate body 32.

[0052] It is understandable that the connection method between the first buckling portion 1411a and the second buckling portion 1411b includes but is not limited to snap connection, screw connection, adhesive connection, etc., as long as the first buckling portion 1411a and the second buckling portion 1411b can be firmly connected.

[0053] In some embodiments, preferably, the first buckle portion 1411a and the second buckle portion 1411b are connected by a snap connection. Specifically, Figure 5 and Figure 6As shown, the first buckle 1411a is extended with a first buckle 1411a2, and the first buckle 1411a is provided with a first clamping platform 1411a3, the second buckle 1411b is extended with a second buckle 1411b2, and the second buckle 1411b is provided with a second clamping platform 1411b3, the first buckle 1411a2 is clamped to the second clamping platform 1411b3, and the second buckle 1411b2 is clamped to the first clamping platform 1411a3 to fix the first buckle 1411a and the second buckle 1411b. Through the buckle connection method, the first buckle 1411a and the second buckle 1411b can be quickly disassembled and assembled, which is convenient for the disassembly and maintenance of the first frame 1411, and also convenient for the disassembly and assembly of the fan assembly 2 and the circuit board 3 accommodated in the first frame 1411.

[0054] It can be understood that in order to improve the connection effect between the first buckle part 1411a and the second buckle part 1411b and enhance the connection stability, the first buckle 1411a2 is arranged on the side of the first buckle part 1411a close to the air suction port 13, and the first clamping platform 1411a3 is arranged on the side of the first buckle part 1411a away from the air suction port 13. Correspondingly, the second buckle 1411b2 is arranged on the side of the second buckle part 1411b away from the air suction port 13, and the second clamping platform 1411b3 is arranged on the side of the second buckle part 1411b close to the air suction port 13.

[0055] It is worth noting that the number of the first buckle 1411a2 and the first card platform 1411a3 is at least two, the number of the second buckle 1411b2 and the second card platform 1411b3 is at least two, and one first buckle 1411a2 is adapted to one second card platform 1411b3, and one second buckle 1411b2 is adapted to one first card platform 1411a3.

[0056] In some embodiments, as Figure 5 and Figure 6 As shown, the inner wall ring of the first buckling portion 1411a is provided with a first abutting portion 1411a4, and the inner wall ring of the second buckling portion 1411b is provided with a second abutting portion 1411b4. The first abutting portion 1411a4 and the second abutting portion 1411b4 are arranged opposite to each other, so that when the fan assembly 2 is accommodated in the first frame 1411, the fan assembly 2 abuts against the first abutting portion 1411a4 and the second abutting portion 1411b4, and the first abutting portion 1411a4 and the second abutting portion 1411b4 form a limit for the fan assembly 2 along the direction parallel to the axis of the cylinder 14.

[0057] It is worth noting that the number of the first abutting portion 1411a4 and the number of the second abutting portion 1411b4 are both two, and the first abutting portion 1411a4 and the second abutting portion 1411b4 arranged opposite to each other jointly enclose a receiving space for receiving the fan assembly 2.

[0058] In some embodiments, the hair dryer 1000 further includes a nozzle 5 , which is connected to the blowing port 12 . The direction and velocity of the air flow blown out from the blowing port 12 can be changed by changing the shape of the nozzle 5 .

[0059] It can be understood that the connection methods between the air nozzle 5 and the blowing port 12 include but are not limited to magnetic connection, snap connection, screw connection, etc.

[0060] The embodiment of the present invention provides a hair dryer 1000, including a shell 1, a fan assembly 2, a circuit board 3, a heating assembly 4, a nozzle 5 and a dustproof assembly 6. The shell 1 is provided with a receiving chamber, a blowing port 12 and an air suction port 13. The blowing port 12 and the air suction port 13 are both connected to the receiving chamber, thereby forming a complete air supply duct; the fan assembly 2 is arranged in the receiving chamber, the fan assembly 2 is close to the air suction port 13, and the fan assembly 2 is used to form a negative pressure at the air suction port 13, so as to suck the air from the external environment into the receiving chamber, and the air is accelerated by the fan assembly 2 and passes through the receiving chamber through the blowing port 12 Exhaust, so that the air supply duct forms a continuous airflow when the fan assembly 2 is in the working state; the circuit board 3 is arranged in the shell 1, the circuit board 3 is connected to the fan assembly 2, and the circuit board 3 is at least partially located in the receiving chamber. The part of the circuit board 3 located in the receiving chamber is provided with heating components, wherein the heating components include capacitors, resistors, control chips, etc. The circuit board 3 is used to control the working state of the fan assembly 2, such as the speed, rotation time, etc.; wherein, the fan assembly 2 is used to drive the external airflow from the air intake 13 into the receiving chamber, and drive the airflow to pass through the heating components in sequence and then be output from the blowing port 12. The air nozzle 5 is connected to the blowing port 12, and is used to change the flow rate and flow direction of the airflow blown out by the hair dryer 1000. The dustproof component 6 is connected to the air intake 13, and is used to prevent foreign matter in the external environment from entering the receiving chamber. Through the above structure, the utility model adopts the method of centrally setting the relevant heat-generating components on the circuit board 3, and setting the part of the circuit board 3 with the heat-generating components in the receiving cavity of the shell 1, and using the fan assembly 2 to actively dissipate heat, so that there is no need to set separate heat-dissipating components on the circuit board 3, which simplifies the circuit board 3 structure of the hair dryer 1000 and reduces the manufacturing cost of the hair dryer 1000.

[0061] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A hair dryer, characterized in that: include The housing is provided with a receiving cavity, an air blowing port and an air suction port, wherein the air blowing port and the air suction port are both connected to the receiving cavity; A fan assembly is disposed in the receiving cavity, and the fan assembly is close to the air inlet; a circuit board disposed in the housing, the circuit board being connected to the fan assembly, the circuit board being at least partially located in the receiving cavity, and a heating component being disposed on the portion of the circuit board located in the receiving cavity; The fan assembly is used to drive the external airflow from the air inlet into the receiving cavity, and drive the airflow to pass through the heating components in sequence and then be output from the air outlet.

2. The hair dryer according to claim 1, characterized in that The hair dryer further includes a heating component, and the heating component is disposed in the receiving cavity; The heating element is located between the heating component and the fan component. The airflow entering the receiving cavity from the air inlet passes through the heating element and the heating component in sequence and is then output from the air outlet.

3. The hair dryer according to claim 2, characterized in that The receiving cavity includes a first receiving cavity and a second receiving cavity, and the first receiving cavity is communicated with the second receiving cavity; The circuit board includes a first plate body and a second plate body, the first plate body and the second plate body are connected, and the first plate body is provided with the heating component; The housing includes a barrel and a handle portion, the handle portion is connected to the barrel, the first receiving chamber, the blowing port, and the suction port are all provided in the barrel, the first plate, the heating assembly, and the fan assembly are all provided in the first receiving chamber, and the blowing port, the heating assembly, the first plate, the fan assembly, and the suction port are provided in sequence; The second receiving cavity is disposed in the handle portion, and the second plate is disposed in the second receiving cavity.

4. The hair dryer according to claim 3, characterized in that The first plate body and the second plate body are integrally formed.

5. The hair dryer according to claim 3, characterized in that There is at least one gap between the first plate and the cylinder on the inner wall of the first receiving chamber, and the at least one gap allows the airflow to flow from the fan assembly to the heating assembly.

6. The hair dryer according to claim 5, characterized in that The thickness direction of the first plate is perpendicular to the direction from the fan assembly to the heating assembly.

7. The hair dryer according to claim 3, characterized in that The cylinder body further includes an inner cylinder, and the inner cylinder includes a first frame and a second frame connected to each other. The fan assembly and the first plate are arranged on the first frame, and the heating assembly is arranged on the second frame.

8. The hair dryer according to claim 7, characterized in that The first frame includes a first buckling portion and a second buckling portion, wherein the first buckling portion and the second buckling portion overlap; The first buckle portion is provided with a first avoidance opening, and the second buckle portion is provided with a second avoidance opening, and the first avoidance opening corresponds to the second avoidance opening; A portion of the connection between the first plate and the second plate is received in the first escape opening, and another portion of the connection between the first plate and the second plate is received in the second escape opening.

9. The hair dryer according to claim 8, characterized in that A first buckle extends from the first buckle part, and the first buckle part is provided with a first clamping platform, a second buckle extends from the second buckle part, and the second buckle part is provided with a second clamping platform, the first buckle is clamped to the second clamping platform, and the second buckle is clamped to the first clamping platform to fix the first buckle part and the second buckle part.

10. The hair dryer according to claim 8, characterized in that The inner wall ring of the first buckling portion is provided with a first abutting portion, and the inner wall ring of the second buckling portion is provided with a second abutting portion. The first abutting portion and the second abutting portion correspond to each other, so that when the fan assembly is accommodated in the first frame, the fan assembly abuts against the first abutting portion and the second abutting portion.

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