Drying device

Abstract

A drying device (100) is formed with a main air duct (101) and a first air duct (102) communicating with the main air duct (101). The drying device (100) includes a heating component (10) and a first flow guide member (20). The heating component (10) is capable of generating thermal radiation and forming a hot spot area (103); at least a part of the first flow guide member (20) is located in the main air duct (101). The first flow guide member (20) is used for guiding a part of the air flow in the main air duct (101) to the first air duct (102), and enabling the air flow flowing through the first air duct (102) to flow to the hot spot area (103).

Description

Technical Field

[0001] The present application relates to the field of household appliances, and particularly to a drying device. Background Art

[0002] Drying devices such as hair dryers mainly rely on the hot air blown out to evaporate and carry away the water on the target object. When the drying device is working, the heating component keeps working to continuously provide heat. However, due to the wide heat radiation range of the heating component, there are some areas where the temperature continues to rise because there is no air flow to carry away the heat, which is prone to being scorched, or the temperature is too high and easy to scald users, or the target object is prone to being scorched when it comes into contact with this part of the area, resulting in certain risks when using the drying device. Summary of the Invention

[0003] An embodiment of the present application provides a drying device.

[0004] The drying device according to the embodiment of the present application is formed with a main air duct and a first air duct communicating with the main air duct. The drying device includes a heating component and a first flow guiding member. The heating component can generate heat radiation and form a hot spot area. At least part of the first flow guiding member is located in the main air duct. The first flow guiding member is used to guide part of the air flow in the main air duct to the first air duct, and make the air flow flowing through the first air duct flow to the hot spot area.

[0005] In the drying device according to the embodiment of the present application, the drying device is formed with a first air duct communicating with the main air duct. At least part of the first flow guiding member is located in the main air duct. The first flow guiding member can guide part of the air flow in the main air duct to the first air duct, and make the air flow in the first air duct flow to the hot spot area to take away the temperature of the hot spot area, thereby reducing the temperature of the hot spot area, so that the temperature of the hot spot area is not easily too high when the drying device is working, and the safety of using the drying device is improved.

[0006] The additional aspects and advantages of the embodiment of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the embodiment of the present application. Brief Description of the Drawings

[0007] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0008] Figure 1 is a schematic plane assembly structure diagram of the drying device according to some embodiments of the present application;

[0009] Figure 2 is an assembly schematic diagram of a part of the structure of the drying device according to some embodiments of the present application;

[0010] Figure 3 is a three-dimensional exploded view of a partial structure of a drying device according to some embodiments of the present application;

[0011] Figure 4 is a three-dimensional cross-sectional view of a partial structure of a drying device according to some embodiments of the present application;

[0012] Figure 5 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0013] Figure 6 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0014] Figure 7 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0015] Figure 8 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0016] Figure 9 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0017] Figure 10 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0018] Figure 11 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0019] Figure 12 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0020] Figure 13 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0021] Figure 14 is a plan view of a partial structure of a drying device according to some embodiments of the present application;

[0022] Figure 15 is another plan view of a partial structure of a drying device according to some embodiments of the present application;

[0023] Figure 16 is yet another plan view of a partial structure of a drying device according to some embodiments of the present application;

[0024] Figure 17 is still another plan view of a partial structure of a drying device according to some embodiments of the present application;

[0025] Figure 18 is Figure 4Partial enlarged view of the drying device shown in area XVIII;

[0026] Figure 19 is a schematic plan view of the drying device according to some embodiments of the present application;

[0027] Figure 20 is a schematic plan view of the drying device according to some embodiments of the present application;

[0028] Figure 21 is a schematic cross-sectional view of the first flow guiding surface of the drying device according to some embodiments of the present application;

[0029] Figure 22 is an effect presentation diagram of the drying device without the first flow guiding member;

[0030] Figure 23 is an effect presentation diagram of the drying device according to the embodiments of the present application. Detailed Embodiments

[0031] The following further describes the embodiments of the present application with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0032] In addition, the embodiments of the present application described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application and should not be construed as a limitation of the present application.

[0033] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] Please refer to Figures 1 to 4 , the drying device 100 according to the embodiments of the present application is formed with a main air duct 101 and a first air duct 102 communicating with the main air duct 101. The drying device 100 includes a heating assembly 10 and a first flow guiding member 20. The heating assembly 10 is capable of generating thermal radiation and forming a hot spot area 103; at least part of the first flow guiding member 20 is located in the main air duct 101. The first flow guiding member 20 is used to guide part of the air flow in the main air duct 101 to the first air duct 102, and to make the air flow flowing through the first air duct 102 flow to the hot spot area 103.

[0035] In the drying device 100 according to the embodiments of the present application, the drying device 100 is formed with a first air duct 102 communicating with the main air duct 101. At least a part of the first deflector 20 is located in the main air duct 101. The first deflector 20 can guide a part of the air flow in the main air duct 101 to the first air duct 102, and make the air flow in the first air duct 102 flow to the hot spot area 103 to take away the temperature of the hot spot area 103. Furthermore, the temperature of the hot spot area 103 can be reduced, so that the temperature of the hot spot area 103 is not likely to be too high when the drying device 100 is working, and the safety of the drying device 100 during use is improved.

[0036] The drying device 100 can specifically be devices such as a hair dryer, a hand dryer, a clothes dryer, a heater, etc., which are not listed one by one here. The drying device 100 can be used to radiate heat towards the object to be dried, and then can evaporate or take away liquids such as water on the object to be dried, making the object to be dried become relatively dry. For example, the drying device 100 can be used to dry or blow dry objects such as hair, hands, body, clothes, etc. In the embodiments of the present application, the drying device 100 is taken as an example of a hair dryer for exemplary illustration. It can be understood that the drying device 100 is not limited to a hair dryer and can be others.

[0037] The drying device 100 will be described in detail below with reference to the accompanying drawings.

[0038] Please refer to Figure 1 , the drying device 100 may include a heating component 10, a first deflector 20, a housing 30 and a motor 40.

[0039] The drying device 100 may be formed with a main air duct 101 and a first air duct 102 communicating with the main air duct 101. The air flow in the drying device 100 can flow through the main air duct 101 to the outside and then to the target object such as hair, and a part of the air flow in the main air duct 101 can flow to the first air duct 102.

[0040] The housing 30 can provide an installation space and protection for the functional components (for example, the heating component 10, the circuit board, the heat dissipation device, the motor, etc.) of the drying device 100, so that the functional components are not easily damaged. Specifically, the housing 30 can be formed with a receiving cavity, and functional components such as the heating component 10 can be installed in the receiving cavity. The housing 30 can be made of materials such as plastic, metal, etc., which are not listed one by one here. The housing 30 can form the main air duct 101, and the air flow can flow in the main air duct 101.

[0041] Please refer to Figure 1, the housing 30 may include a first housing 31 and a second housing 32, and the first housing 31 may be connected to the second housing 32. The first housing 31 can be used for the user to hold, so as to facilitate the user to hold the drying device 100. The second housing 32 can be used for air outlet and can also be used to accommodate more functional components. In one example, the first housing 31 and the second housing 32 are of a split structure, and the first housing 31 and the second housing 32 can be detachably connected by means such as snap connection and screws, and the first housing 31 and the second housing 32 can also be non-detachably connected by means such as welding and gluing. In another example, the first housing 31 and the second housing 32 can be of an integral structure, and the first housing 31 and the second housing 32 can be integrally formed by means such as injection molding and casting.

[0042] The first housing 31 can be used to install some functional components. For example, the drying device 100 may include a battery, and the battery can be installed in the first housing 31. Specifically, the battery may include a battery cell and a protection board, and both the battery cell and the protection board can be located in the first housing 31. The first housing 31 can communicate with the second housing 32. An air inlet can be provided at the tail or side wall of the first housing 31. There may be a gap between the inner wall of the first housing 31 and the outer surface of the battery. When the air flow in the second housing 32 flows, a negative pressure can be formed in the first housing 31, and the air flow in the external environment can enter the first housing 31 from the air inlet. Then, the air flow in the first housing 31 can flow towards the second housing 32 through the gap, so as to take away the heat of the first housing 31, the battery and other functional components in the first housing 31, reduce the temperature of the first housing 31, and it is not easy for the user to be scalded when holding the first housing 31. The first housing 31 can also be provided with an air inlet, and the external air flow can enter the first housing 31 through the air inlet.

[0043] Further, please continue to refer to Figure 1, in some embodiments, the second housing 32 may include opposite first end 321 and second end 322. The second housing 32 may form the main air duct 101. The first end 321 of the second housing 32 may be formed with honeycomb-shaped or other-shaped air inlet holes. The airflow outside the drying device 100 may enter the cavity of the second housing 32 through the air inlet holes. The second end 322 of the second housing 32 may be formed with an air outlet. The airflow in the second housing 32 may flow out of the drying device 100 through the air outlet and blow towards the target object, thereby dissipating heat from the target object. At the same time, the airflow can take away the heat of the second housing 32 and the functional devices inside the second housing 32 during the process of flowing from the air inlet holes to the air outlet, dissipating heat from the second housing 32 and the functional devices installed in the second housing 32. Of course, the air inlet holes may also be provided at other positions of the second housing 32. For example, the air inlet holes can be opened at any position between the first end 321 and the second end 322 of the second housing 32, which is not limited here and will not be listed one by one. It is easy to understand that the air enters the second housing 32 through the air inlet holes at the first end 321 and flows along the second housing 32 until it flows out from the air outlet at the second end 322. This process is the process of the air passing through the second housing 32 along the main air duct 101.

[0044] Please refer to Figure 1 , the motor 40 may be installed in the housing 30 and can be used to form an airflow. The airflow can carry the heat radiated by the heating component 10 and the heat generated by some functional devices towards the target object such as hair, and then can evaporate the liquid on the target object to achieve the function of drying the target object. Specifically, the motor 40 may include a motor main body 41 and a fan 42. The fan 42 is connected to the motor main body 41. When the motor main body 41 rotates, the fan 42 can rotate accordingly to drive the air flow in the housing 30 to form an airflow.

[0045] In one example, the motor 40 may be installed in the first housing 31. When the motor 40 operates, the airflow blows from the first housing 31 towards the second housing 32 and then flows out from the second housing 32. In this way, the vibration generated by the motor can be buffered by the user holding the first housing 31. In another example, the motor 40 may be installed in the second housing 32. When the motor 40 operates, an airflow can be formed in the second housing 32 and flow out from the second housing 32. The airflow in the first housing 31 can flow towards the second housing 32 and then flow out from the second housing 32. In this way, the installation space of the motor 40 is more sufficient, a motor 40 with a larger power can be selected, and more airflow can be blown towards the hair in the same time, reducing the drying time required.

[0046] Please refer to Figures 1 to 4, the heating component 10 can be installed in the housing 30 and is capable of generating thermal radiation. The heating component 10 can radiate heat to a certain range around it. For example, the heating component 10 can radiate heat towards the main air duct 101. The air flow in the main air duct 101 can carry away the heat radiated by the heating component 10 into the main air duct 101 and transfer this heat to the target object. The heat generated by the heating component 10 can also be directly radiated to the target object, enabling the liquid on the target object to be evaporated more quickly. Or most of the heat of the heating component 10 is directly transferred to the target object by means of thermal radiation, and a small part of the heat generated during its own operation is carried away by the air flow in the main air duct 101, simultaneously achieving the effects of dissipating heat from the heating component 10 and increasing the outlet air temperature.

[0047] Specifically, the heating component 10 can be installed in the second housing 32 and near the air outlet of the second housing 32, and can complete the drying of the target object in a relatively short time. That is, the heating component 10 is relatively close to the target object, and the heat generated by the heating component 10 can be radiated to the target object more, enabling the target object to be dried faster.

[0048] Please continue to refer to Figures 1 to 4 , in some embodiments, the heating component 10 can include a heat source 11 and a reflector cup 12. The number of reflector cups 12 can be one or more. The heat source 11 can be installed in the reflector cup 13. The heat source 11 can be used to generate heat and radiate the heat to a certain range around it. The reflector cup 12 can be detachably or non-detachably installed in the second housing 32. The heat source 11 can include but is not limited to at least one of halogen lamps, LEDs, ceramics, and graphene, and there is no limitation here. In the embodiments of the present application, the heat source 11 is a halogen lamp.

[0049] The external space facing the reflector cup 12 can form a hot spot area. The reflector cup 12 may include a mounting end 121 and an opening end 122. The reflector cup 12 may form a mounting cavity 123. One end of the mounting cavity 123 is the mounting end 121, and the opening at the other end of the mounting cavity 123 constitutes the opening end 122. Along the direction extending from the mounting end 121 towards the opening end 122, the radial dimension of the mounting cavity 123 may gradually increase. The mounting end 121 can be used to mount the heating source 11. The hot spot area 103 can be the area surrounded by the opening end 122, or along the direction extending from the mounting end 121 towards the opening end 122, the hot spot area 103 can be the area directly opposite (i.e., facing) the opening end 122, or the cavity wall of the mounting cavity 123 between the opening end 122 and the mounting end 121 can be the hot spot area 103. In some embodiments, the mounting cover 13 is provided with one reflector cup 12, and the number of heating sources 11 is multiple. The multiple heating sources 11 can be mounted in one reflector cup 12. Or, in some embodiments, multiple reflector cups 12 can be provided, the number of heating sources 11 is multiple, and the number of heating sources 11 is the same as the number of reflector cups 12. The multiple heating sources 11 are correspondingly mounted in the multiple reflector cups 12. Or, in some embodiments, multiple reflector cups 12 can be provided, the number of heating sources 11 is multiple, and the number of heating sources 11 is more than the number of reflector cups 12. Two, three or more heating sources 11 can be mounted in some of the reflector cups 12, and one heating source 11 can be mounted in some of the reflector cups 12. Among them, the multiple reflector cups 12 can be of an integral structure, or the multiple reflector cups 12 can also be of a split structure.

[0050] Further, please refer to Figures 2 to 5 , in one embodiment, the first deflector 20 can be disposed at the air outlet 1011 of the main air duct 101, that is, the first deflector 20 can be disposed at the end 1012 of the main air duct 101 close to the air outlet 1011. The first deflector 20 can cover at least part of the air outlet 1011 of the main air duct 101, so that the air flow flowing out from the air outlet 1011 can reach the first deflector 20. And, the first deflector 20 can be spaced from the end face 1013 of the air outlet 1011 of the main air duct 101, and the first deflector 20 and the end face 1013 of the air outlet 1011 can form a first air duct 102. The first deflector 20 can be annular. Part of the first deflector 20 can extend into the main air duct 101 and guide part of the air flow in the main air duct 101 from the inside to the outside along the circumferential direction of the main air duct 101 to the hot spot area 103.

[0051] Further, please combine Figure 6, in another embodiment, ventilation holes 1321 may be formed in the side wall 1010 of the main air duct 101. One end of the ventilation hole 1321 may communicate with the main air duct 101, and the other end of the ventilation hole 1321 may face the hot spot area. It can be understood that the ventilation hole 1321 may form the first air duct 102. Along the flowing direction of the air flow in the main air duct 101, the upper edge of the ventilation hole 1321 forms the first flow guide member 20. Among them, the ventilation hole 1321 may be a straight cylindrical hole, or the ventilation hole 1321 may be formed by connecting multiple cylindrical holes.

[0052] Specifically, the ventilation hole 1321 may penetrate through the side wall 1010 of the main air duct 101 and may face the hot spot area 103, and the air flow in the main air duct 101 may be blown to the hot spot area 103 through the ventilation hole. Among them, ventilation holes 1321 may be provided at positions of the side wall 1010 of the main air duct 101 opposite to the hot spot areas 103 formed by each heating source 11. It can be understood that the number of ventilation holes 1321 may be multiple. Further, on the inner surface of the side wall of the main air duct 101 above the ventilation hole 1321, a convex portion 1322 is formed to protrude towards the center line of the main air duct 101. A part of the air flow in the main air duct 101 may flow to the convex portion 1322, and the convex portion 1322 may guide this part of the air flow into the ventilation hole 1321. At this time, the convex portion 1322 and the upper edge of the ventilation hole together form the first flow guide member 20.

[0053] Please refer to Figure 7 , in some embodiments, a ventilation duct 1016 may be provided on the side wall 1010 of the main air duct 101. The ventilation duct 1016 may form the first air duct 102. One end of the ventilation duct 1016 may communicate with the main air duct 101, and the other end of the ventilation duct 1016 may face the hot spot area 103. The ventilation duct 1016 may form the first flow guide member 20. The ventilation duct 1016 may extend into the main air duct 101 so that the air flow can flow into the ventilation duct 1016 when flowing in the main air duct 101. Or one end of the ventilation duct 1016 is a hole formed on the side wall 1010 of the main air duct 101, while guiding the air flow to avoid the end of the ventilation duct 1016 inserted into the main air duct 101 from obstructing the air flow. The ventilation duct 1016 may include multiple air pipes (not shown in the figure). The air pipes may be formed of materials such as plastic, rubber, and silica gel. The ventilation duct 1016 may be buried in the side wall of the main air duct 101, or the side wall of the main air duct 101 may be provided with installation holes through which the ventilation duct 1016 passes, and the air pipes may pass through the installation holes and then be fixed to the side wall 1010 of the main air duct 101 by bonding. The air pipes may be arranged around the main air duct 101, and the multiple air pipes may be closely connected or arranged at intervals.

[0054] Further, the ventilation duct 1016 can be in a bent state. The ventilation duct 1016 can include a first section (not shown in the figure) and a second section (not shown in the figure). The first section can be a vertical section, which can be arranged in the main air duct 101 and closely attached to the side wall 1010 of the main air duct 101. The second section can be connected to the first section, and the second section is bent at a certain angle relative to the first section. For example, the second section can be bent 45 degrees, 60 degrees, 90 degrees, 120 degrees or more relative to the first section, and the second section can penetrate the side wall 1010 of the main air duct 101 and even extend out of the side wall 1010 of the main air duct 101. Of course, in other embodiments, the ventilation duct 1016 can also include a third section, a fourth section or more sections, which will not be specifically described here.

[0055] Further, please refer to Figure 10 , Figure 11 , Figure 16 and Figure 17 , in one embodiment, the second housing 32 can surround the reflector cup 12, and there is a gap between the inner surface of the second housing 32 and the outer surface of the reflector cup 12. The gap communicates with the main air duct 101, and the gap can be a part of the main air duct 101. It can be understood that the shape of the main air duct 101 can be an annular column (that is, a hollow column in the middle), and the main air duct 101 can surround the outside of the reflector cup 12, then the main air duct 101 surrounds the heating component 10, and the main air duct 101 also surrounds the hot spot area 103.

[0056] The first deflector 20 can be installed on the housing 30 and cover a part of the main air duct 101 close to the heating component 10, and is spaced from the end face 1013 of the air outlet 1011. The first deflector 20 can guide part of the air flow in the main air duct 101 from the outside to the inside to the hot spot area 103, as Figure 11 shown. Of course, in other embodiments, the first deflector 20 can also be installed on the reflector cup 12 and spaced from the end face of the reflector cup 12 close to the air outlet 1011, as Figure 10 shown. For example, the first deflector 20 can include a plurality of spaced feet, and the feet can be clamped on the side wall of the reflector cup 12. Or, the first deflector 20 can be connected to both the housing 30 and the reflector cup 12, making the first deflector 20 more stable.

[0057] Please refer to Figures 2 to 4, in some embodiments, the heating assembly 10 may further include a mounting cover 13. A plurality of reflecting cups 12 may be provided inside the mounting cover 13. The plurality of reflecting cups 12 may form the mounting cover 13, or the plurality of reflecting cups 12 may be assembled to form the mounting cover 13. When the number of reflecting cups 12 is one, the side wall of the reflecting cup 12 may be the mounting cover 13. The mounting cover 13 may have an end face 1301 facing the hot spot area 103. A through hole 131 may be formed in the end face 1301. The through hole 131 may communicate with the main air duct 103. The plurality of reflecting cups 12 and the plurality of heating sources 11 may be arranged around the through hole 131. It can be understood that the heating assembly 10 is located between the main air duct 101 and the housing 30. The mounting cover 13 includes an inner side wall 132 located in the through hole 131 and an outer side wall 133 opposite to the inner side wall 132. The outer side wall 133 may be used to contact the inner surface of the second housing 32. The area of the end face 1301 between the inner side wall 132 and the outer side wall 133 may form the hot spot area 103, or the external space opposite to the area of the end face 1301 between the inner side wall 132 and the outer side wall 133 may form the hot spot area 103. The air flow in the drying device 100 may flow out from the through hole 131. That is, the through hole 131 may form a part of the main air duct 101. Thus, since the plurality of heating sources 11 are arranged around the main air duct 101, the distribution of the heating sources 11 is more uniform, so that the heat conduction range generated by the heating assembly 10 is wider, and a larger range of the target object can be dried simultaneously.

[0058] Specifically, the end of the mounting cover 13 facing the motor 40 may be mounted on the bracket of the motor 40 or the housing of the motor 40. The air flow flowing out from the motor 40 may flow out of the drying device 100 after flowing through the outer surface of the mounting cover 13. The heat generated by the heating source 11 may be radiated to the mounting cover 13. Then, when the air flow flows through the mounting cover 13, the temperature of the mounting cover 13 can be taken away, preventing the mounting cover 13 from being overheated and charred.

[0059] Please refer to Figure 8 and Figure 9 , in certain embodiments, the heating assembly 10 is received in the housing 30. There may be a gap between the outer surface of the side wall 134 of the mounting cover 13 and the inner surface of the housing 30. It can be understood that there is a gap between the edge of the end face 1301 of the mounting cover 13 and the inner surface of the housing 30. The main air duct 101 may include a first sub-main air duct 1014 and a second sub-main air duct 1015. The first sub-main air duct 1014 may be formed by the through hole 131 of the mounting cover 13. The second sub-main air duct 1015 may be formed by the outer surface of the side wall 134 of the mounting cover 13 and the inner surface of the housing 30. The air flow in the drying device 100 may flow out from the first sub-main air duct 1014 and the second sub-main air duct 1015.

[0060] In Figure 8In the shown embodiment, the first flow guide member 20 can be installed at the air outlet of the first sub-main air duct 1014, and is spaced apart from the end face of the air outlet of the first sub-main air duct 1014 to form the first air duct 102. The first air duct 102 is communicated with the first sub-main air duct 1014. Part of the first flow guide member 20 can extend into the first sub-main air duct 1014. The first flow guide member 20 can extend in a direction close to the hot spot area 103, and is used to guide part of the airflow in the first sub-main air duct 1014 to the hot spot area 103.

[0061] Furthermore, please combine Figure 12 In some embodiments, the drying device 100 may further be formed with a second air duct 104 communicating with the second sub-main air duct 1015, and the drying device 100 may further include a second air guide 50, which may be installed on the housing 30 and located at the end of the air outlet of the second sub-main air duct 1015. The second air guide 50 may extend from the end surface of the housing 30 toward the direction close to the hot spot area 103, or the second air guide 50 may be inclined toward the hot spot area 103, so that the second air guide 50 may guide part of the air flow in the second sub-main air duct 1015 to the second air duct 104, and then flow to the hot spot area 103. The air flow flowing out of the second air duct 104 may converge with the air flow flowing out of the first air duct 102 at the hot spot area 103, and take away the heat of the hot spot area 103 together, thereby reducing the temperature of the hot spot area 103 more quickly, and the temperature of the hot spot area 103 may be reduced to a lower level, further improving the safety of the drying device 100 during operation.

[0062] exist Figure 9 In the illustrated embodiments, in some other embodiments thereof, the first air guide 20 may be installed on the shell 30 and located at the air outlet of the second sub-main air duct 1015, the first air guide 20 may extend from the end surfaces of the first air guide 20 and the shell 30 toward the direction close to the hot spot area 103, or the first air guide 20 may be inclined toward the hot spot area 103, the first air guide 20 may be spaced from the end surface of the reflective cup 12, so that the first air guide 20 may form the first air duct 102, the first air duct 102 may be communicated with the second sub-main air duct 1015, and the airflow flowing out of the second sub-main air duct 1015 may be guided to the hot spot area 103 by the first air guide 20.

[0063] For further information, see Figure 13, in some embodiments, the drying device 100 may further be formed with a second air duct 104 communicating with the first sub-main air duct 1014. The drying device 100 may further include a second deflector 50. The second deflector 50 may be installed on the housing 30 and located at the end of the air outlet of the first sub-main air duct 1014. A part of the second deflector 50 may extend into the first sub-main air duct 1014. The second deflector 50 may be spaced from the air outlet of the first sub-main air duct 1014 to form the second air duct 104. The second deflector 50 may be inclined towards the hot spot area 103 or extend towards the hot spot area 103, so that the second deflector 50 can guide a part of the air flow in the first sub-main air duct 1014 to the second air duct 104 and flow to the hot spot area 103. The air flow flowing out of the second air duct 104 may converge with the air flow flowing out of the first air duct 102 in the hot spot area 103, jointly taking away the heat of the hot spot area 103, and thus the temperature of the hot spot area 103 can be reduced more quickly, and the temperature of the hot spot area 103 can be reduced to a lower level, further improving the safety of the drying device 100 during operation.

[0064] Please refer to Figure 10 and Figure 11 , in certain embodiments, the heating assembly 10 is located in the main air duct 101. There may be a gap between the outer surface of the side wall 134 of the mounting cover 13 and the inner surface of the housing 30, and there is a gap between the edge of the end face 1301 of the mounting cover 13 and the inner surface of the housing 30. This gap may communicate with the main air duct 101, so that the space between the side wall of the mounting cover 13 and the inner surface of the housing 30 can form a part of the main air duct 101, that is, in this embodiment, the main air duct 101 is located outside the mounting cover 13. The mounting cover 13 may be provided with one or more reflector cups 12. The area surrounded by the open ends 122 of the multiple reflector cups 12, or the external area facing this area, forms the hot spot area 103. One or more heating sources 11 may be installed in one reflector cup 12. In one example, the mounting cover 13 is provided with one reflector cup 12, and one heating source 11 is installed in one reflector cup 12; in another example, the mounting cover 13 is provided with one reflector cup 12, and multiple heating sources 11 are installed in one reflector cup 12.

[0065] Furthermore, the heating assembly 10 may be located on one side of the main air duct 101. In Figure 15In the illustrated embodiment, the mounting cover 13 may include a first side wall (not shown) and a second side wall (not shown). The first side wall and the second side wall may enclose a ring. For example, the shape of the first side wall may be semi-circular, and the shape of the second side wall may be linear. The first side wall may contact the inner surface of the housing 30, and the second side wall may be spaced from the inner surface of the housing 30 to form a main air duct 101. It can be understood that the heating assembly 10 is located on one side of the main air duct 101. The first deflector 20 may be mounted on the second side wall or the housing 30, or the first deflector 20 may be mounted on both the housing 30 and the second side wall. The first deflector 20 may cover the second side wall and be spaced from the end face of the second side wall near the air outlet 1011. The first deflector 20 and the end face of the second side wall near the air outlet 1011 form a first air duct 102. The air flow in the main air duct 101 may be guided by the first deflector 20 to the side where the heating assembly 10 is located and flow through the hot spot area 103.

[0066] Please refer to Figure 2 and Figure 5 , in some embodiments, the heat source 11 may include a light source 111. After the light source 111 is powered on, it can emit light and then radiate heat. In the same time period, the greater the power of the light source 111, the more heat is generated. The light source 111 uses thermal radiation to conduct heat. More heat energy is directly transferred to the target object and the surrounding moisture through heat conduction, which can reduce unnecessary energy loss, and the working efficiency of the drying device 100 is relatively high. Among them, the light source 111 includes but is not limited to halogen lamps and LED lamps.

[0067] Furthermore, the drying device 100 may further include an optical element 60 disposed on the optical path of the light source 111. The optical element 60 may be used to filter or reflect the visible light emitted by the light source 111. At least part of the hot spot area 103 may be formed on the optical element 60 or the external area it faces. Thus, most of the visible light emitted by the light source 111 will be filtered or reflected, and even cannot enter the external environment at all. When the user uses the drying device 100, the light emitted by the light source 111 will not directly shine into the user's eyes, will not be dazzling and is not likely to cause harm to the human eye, improving the user experience.

[0068] Specifically, the optical element 60 can be installed on the end face 1301 of the reflector cup 12 close to the air outlet 1011 of the main air duct 101. The optical element 60 can be installed on the second housing 32 or the reflector cup 12 by means of adhesion, snap connection, etc. Specifically, the optical element 60 can cover the open end 122 of the reflector cup 12. In one example, the optical element 60 can be made of a light-shielding material, such as wood, black plastic, etc., which will not be listed one by one here. Or, in another example, the optical element 60 can include a light-transmitting part and a light-shielding part. The light-transmitting part can be made of materials such as glass, plastic, etc., and visible light can pass through the light-transmitting part. The light-shielding part can block the visible light emitted by the light source 111. The light-shielding part can be formed of a light-shielding material, and the light-shielding part can also be a film plated on the light-transmitting part, which will not be listed one by one here. Among them, the light-shielding part can be closer to the light source 111 than the light-transmitting part, and the light-shielding part can also be closer to the light source 111 than the light-transmitting part. In one example, the optical element 60 can include a reflector. For example, the optical element 60 can include a silver film. When visible light reaches the optical element 60, it can be reflected by the reflector to the side wall of the mounting cover 13 or reflected back to the light source 111, and thus cannot pass through the optical element 60.

[0069] If the optical element 60 is located on the optical path of the light source 111, the optical element 60 can be continuously irradiated by the light source 111. As a result, the temperature of the optical element 60 will continue to rise, and a hot spot area 103 can be formed in the optical element 60 or the external area it faces. The first flow guide member 20 can be spaced from the end face of the optical element 60 away from the light source 111. The first flow guide member 20 can guide a part of the air flow in the main air duct 101 to the optical element 60 to dissipate heat from the optical element 60 and reduce the temperature of the optical element 60.

[0070] Please refer to Figure 2 、 Figure 3 and Figure 5, the optical element 60 may allow invisible light such as infrared light and ultraviolet light in the light emitted by the light source 111 to pass through. The optical element 60 may include a light-emitting portion 61. The invisible light emitted by the light source 111 enters the outside world after passing through the light-emitting portion 61. Then, the temperature of the light-emitting portion 61 may continuously rise, and at least part of the hot spot area 103 may be formed on the light-emitting portion 61. The first flow guide 20 may guide the air flow to the light-emitting portion to dissipate heat from the light-emitting portion 61. The light-emitting portion 61 may include a light-emitting plane 611 in contact with the outside world. At least part of the hot spot area 103 may be formed on the light-emitting plane 611. The first flow guide 20 may be spaced from the light-emitting plane 611. At least part of the air flow flowing out from the first air duct 102 may flow through the light-emitting plane 611 to dissipate heat from the light-emitting plane 611, reduce the temperature of the light-emitting plane 611, and prevent the target object from contacting the light-emitting plane 611 and being scorched. In other embodiments, the light-emitting portion 61 is also arranged in other three-dimensional regular or irregular structures, such as having a three-dimensional concave-convex shape, a plurality of protruding structures extending outward, etc., to achieve different light-emitting heat dissipation, refraction, absorption of specific wavelength bands and other effects, form different types of hot spot areas 103 according to the actual shape, and correspondingly adjust the air flow direction of the first air duct 102 to meet the heat dissipation of the hot spot area 103. For example, when the light-emitting portion 61 has Figure 5 the upward-extending convex structure shown, since the convex structure has a certain height, at this time, it is necessary to adjust the first air duct 102 to adjust the air outlet direction along the Figure 5 upward direction shown to adapt to the heat dissipation of the actual hot spot area 103.

[0071] Of course, in other embodiments, the optical element 60 may also allow part of the visible light to pass through, which is not limited herein.

[0072] Please refer to Figures 1 to 5 , at least part of the first flow guide 20 is located in the main air duct 101, so that when the air flow flows in the main air duct 101, it can flow through the first flow guide 20 and be guided by the first flow guide 20 into the first air duct 102; when the first flow guide 20 is installed on the housing 30, the first flow guide 20 may form the first air duct 102 with the end surface 1013 of the air outlet 1011; when the first flow guide 20 is installed on the mounting cover 13, the first flow guide 20 may form the first air duct 102 with the end surface of the inner side wall 132 of the mounting cover 13. Along the direction from the main air duct 101 to the hot spot area 103, the first air duct 102 may face the hot spot area 103, so that the air flow flowing out from the first air duct 102 can flow to the hot spot area 103 and dissipate heat from the hot spot area 103.

[0073] In some embodiments, the angle between the direction of the air flow flowing to the hot spot area 103 and the direction of the air flow in the main air duct 101 is greater than or equal to 30 degrees. Thus, a relatively large amount of air flow flows to the hot spot area 103, which can carry away more heat from the hot spot area 103 and accelerate the heat dissipation speed of the hot spot area 103. The angle between the direction of the air flow flowing to the hot spot area 103 and the direction of the air flow in the main air duct 101 can be 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 60 degrees, 75 degrees, 80 degrees, 90 degrees or more degrees, which are not listed one by one here. In one embodiment, the direction of the air flow flowing to the hot spot area 103 can be perpendicular to the direction of the air flow in the main air duct 101, so that the air flow flows parallel to the hot spot area 103.

[0074] Please refer to Figures 2 to 4 , in some embodiments, the drying device 100 may further include a mounting structure 70. The mounting structure 70 can be used to mount the first deflector 20 and can also be used to deflect the air flow generated by the motor 40. Along the direction of the air flow in the main air duct 101, the mounting structure 70 can be mounted downstream of the motor 40. The mounting structure 70 can be mounted in the through hole 131 of the mounting cover 13. Please combine with Figure 18 , a clamping hole 1321 and a clamping groove 1322 communicating with the clamping hole 1321 can be formed in the inner side wall 132 of the mounting cover 13. The mounting structure 70 can include a clamping card 71 and a clamping post 72 connected to the clamping card 71. The clamping card 71 can be inserted into the clamping groove 1322, and the clamping post 72 can extend into the clamping hole. The cooperation between the clamping card 71 and the clamping groove 1322 can fix the mounting structure 70 on the mounting cover 13, and the cooperation between the clamping post 72 and the clamping hole can prevent the mounting structure 70 from rotating relative to the mounting cover 13. Of course, in other embodiments, it can also be that the mounting structure 70 is provided with a clamping hole and the inner side wall of the mounting cover 13 is provided with a clamping post. Among them, the clamping groove 1322 can be a groove open on one side or a groove open on both sides. In Figure 18 the illustrated embodiment, the clamping groove 1322 is a groove open on both sides, so that a stepped structure is formed on the inner side wall 132. The end face of the clamping card 71 can contact the stepped surface of the stepped structure, and the outer surface of the clamping card 71 can contact the side surface of the clamping groove 1322.

[0075] The mounting structure 70 may further include a mounting post 73 and a flow guiding rib 74 provided on the mounting post 73. The outer surface of the mounting post 73 may be spaced from the inner surface of the through hole 131 to form a main air duct 101. Along the flow direction of the air flow in the main air duct 101, the outer diameter of the mounting post 73 may gradually decrease, so that part of the air flow can move closer to the center of the mounting post when flowing along the outer surface of the mounting post, and the air flow is smoother when flowing out of the drying device 100. The air flow formed by the motor 40 can flow through the flow guiding rib 74, and the flow guiding rib 74 can guide the air flow, so that the air flow is more directional and smoother when flowing out of the drying device 100. The card 71 may be connected to one end of the flow guiding rib 74 away from the mounting post 73. And, the top surface of the flow guiding rib 74 may abut against the inner surface of the through hole 131 to axially position the mounting structure 70, so that the axis of the mounting structure 70 coincides with the axis of the through hole 131, thereby avoiding the phenomenon of swinging when the air flow flows. For example, an abutting groove may be formed on the inner surface of the through hole 131, and the top surface of the flow guiding rib 74 may extend into the abutting groove, and the abutting groove and the flow guiding rib 74 cooperate to fix the mounting position of the mounting structure 70. For another example, the flow guiding rib 74 may be in interference fit with the through hole 131, so that the frictional force between the top surface of the flow guiding rib 74 and the inner surface of the through hole 123 is large, and thus the mounting structure 70 is not easily loosened.

[0076] Please refer to Figures 2 to 5 , the first flow guiding member 20 may be made of materials such as plastic and metal, so that the first flow guiding member 20 may have better rigidity, and the first flow guiding member 20 is not easily deformed when the air flow blows on the first flow guiding member 20. The first flow guiding member 20 may be mounted on the housing 30, the first flow guiding member 20 may also be mounted on the mounting cover 11, and the second flow guiding member 20 may also be mounted on the mounting cover 11 through the mounting structure 70, which is not limited herein.

[0077] In some embodiments, the first flow guiding member 20 may include a mounting portion 21, a rib portion 22, and a flow guiding portion 23. The mounting portion 21 may be mounted on the mounting post 73, so that the first flow guiding member 20 can be fixedly mounted at the air outlet 1011 of the main air duct 101. In some of these embodiments, the mounting portion 21 may be non-removably mounted on the end of the mounting post 73 away from the motor 40 by means such as gluing and welding; in some other embodiments, the mounting portion 21 may be removably mounted on the end of the mounting post 73 away from the motor 40 by means such as screws, bolts, and snaps.

[0078] In Figure 3In the illustrated embodiment, the mounting portion 21 may be provided with positioning posts, the mounting column 73 may be provided with positioning holes, and the positioning posts may be inserted into the positioning holes to determine the mounting position of the first flow guide member 20. The mounting structure 70 may further include screws. The mounting portion 21 may be provided with through first connection holes, the mounting column 73 may be provided with second connection holes opposite to the first connection holes, and the screws may pass through the first connection holes and extend into the second connection holes and be locked in the second connection holes to fixedly mount the first flow guide member 20 on the mounting structure 70. Of course, it may also be that the mounting portion 21 is provided with positioning holes, the mounting column 73 is provided with positioning posts, and the positioning posts may be inserted into the positioning holes to determine the mounting position of the first flow guide member 20.

[0079] The rib portion 22 may be connected to the mounting portion 21 and extend in a direction away from the mounting portion 21. The rib portion 22 may cooperate with the flow guide rib 74 to jointly guide the flow direction of the air flow in the main air duct 101, so that the outflowing air flow is more directional and smoother. Further, in one example, along the air flow direction in the main air duct 101, the thickness of the rib portion 22 may gradually decrease to make the air flow more convergent, facilitating drying of a smaller target area. In another example, along the air flow direction in the main air duct 101, the thickness of the rib portion 22 may gradually increase to make the air flow more divergent, increasing the radiation area of the air flow and facilitating drying of a larger target area.

[0080] The flow guide portion 23 may be connected to one end of the rib portion 22 away from the mounting portion 21. The flow guide portion 23 may be used to guide the air flow flowing out of the main air duct 101 to the hot spot area 103. The flow guide portion 23 may form a first air duct 102 at an interval from the end face of the mounting structure 70 away from the motor 40 or the end face of the mounting cover 13 away from the motor 40. Part of the flow guide portion 23 may be located in the main air duct 101 so that the air flow in the main air duct 101 can flow through the flow guide portion 23, and the flow guide portion 23 may guide the air flow to the hot spot area 103. The flow guide portion 23 may be in the form of a complete ring, or the flow guide portion 23 may be a disconnected ring, such as a plurality of disconnected plate-like shapes.

[0081] Please refer to Figure 3 , the mounting portion 21, the rib portion 22 and the flow guide portion 23 may be integrally formed. For example, the mounting portion 21, the rib portion 22 and the flow guide portion 23 may be integrally formed by injection molding, casting and other methods. Or the mounting portion 21, the rib portion 22 and the flow guide portion 23 may be separately formed. For example, the mounting portion 21, the rib portion 22 and the flow guide portion 23 may be assembled together by welding, snap connection, bonding and other methods.

[0082] Of course, in other embodiments, the first flow guide member 20 may not be as Figure 3As shown, the first flow guide member 20 may only include a flow guide portion 23 and a connection portion (not shown) that connects the flow guide portion 23 to the heating assembly 10, or the housing 30, or the mounting structure 70. The connection portion may be a clamping leg or the like, and is not limited herein.

[0083] Please refer to Figure 5 and Figure 18 , the first flow guide member 20 may include a first flow guide surface 24 opposite to the airflow flowing in the main air duct 101. The first flow guide surface 24 may be used to guide a part of the airflow in the main air duct 101 to flow toward the hot spot area 103 to dissipate heat from the hot spot area 103. The first flow guide surface 24 may include one or a combination of a curved surface, an inclined surface, and a flat surface. The first flow guide surface 24 may include a regular curved surface or an irregular curved surface, which will not be elaborated one by one herein.

[0084] Please refer to Figure 19 , in some embodiments, the first flow guide surface 24 includes at least one inclined surface that is inclined at a predetermined angle toward the hot spot area 103 along the flow direction of the airflow in the main air duct 101. It can be understood that the first flow guide surface 24 may include one, two, three, four or more inclined surfaces with different inclination angles, which will not be listed one by one herein. The inclined surface is inclined at a predetermined angle toward the hot spot area 103. The predetermined angle may be 30°, 40°, 45°, 55°, 60°, 70°, 75°, 80°, 90°, 100°, 120° or more angles, which will not be listed one by one herein. Among them, the predetermined angle refers to the angle between the inclined surface and the flow direction of the airflow in the main air duct 101. Thus, since the inclined surface is inclined toward the hot spot area 103, the first flow guide surface 24 can better guide the airflow to the hot spot area 103, and the first flow guide surface 24 can guide more airflow to the hot spot area 103. At the same time, the first flow guide surface 24 being an inclined surface makes the airflow less likely to be blocked when flowing along the first surface, and the flow is smoother.

[0085] Please refer to Figure 20 , in some embodiments, the first flow guide surface 24 may include a plurality of sub-inclined surfaces 241. The sub-inclined surface 2411 closest to the main air duct 101 may extend obliquely along the flow direction of the airflow in the main air duct 101 and in the direction close to the hot spot area 103. The inclination angle of the sub-inclined surface 2412 farthest from the main air duct 101 is greater than the inclination angle of the sub-inclined surface 241 closest to the main air duct 101. Thus, the first flow guide surface 24 can better guide a part of the airflow in the main air duct 101 to the hot spot area 103, and the airflow flows more smoothly on the first flow guide surface 24, and the airflow flowing out of the first air duct 102 will flow more to the hot spot area 103.

[0086] Specifically, the first air guiding surface 24 may include two, three, four, five or more sub-inclined surfaces 241. The multiple sub-inclined surfaces 241 may be connected end to end to form the first air guiding surface 24. Part of the air flow in the main air duct 101 may flow from the sub-inclined surface 241 closest to the main air duct 101 to the sub-inclined surface 241 farthest from the main air duct 101 in sequence. It should be noted that the inclination angle refers to the angle between the sub-inclined surface 241 and the flow direction of the air flow in the main air duct 101. Define the sub-inclined surface 241 closest to the main air duct 101 as the first sub-inclined surface 2411, and the sub-inclined surface 241 farthest from the main air duct 101 as the second sub-inclined surface 2412. The inclination angle of the first sub-inclined surface 2411 is α1, and the inclination angle of the second sub-inclined surface 2412 is α2. The inclination angle of any sub-inclined surface 241 between the first sub-inclined surface 2411 and the second sub-inclined surface 2412 may be between α1 and α2, or may be greater than α2, or less than α1, which is not limited herein. In one embodiment, from the first sub-inclined surface 2411 to the second sub-inclined surface 2412, the inclination angles of the multiple sub-inclined surfaces 241 gradually decrease. In this way, during the process of the air flow flowing from the first sub-inclined surface 241 to the second sub-inclined surface 241, the air flow is smoother and less likely to generate backflow.

[0087] Of course, in other embodiments, the inclination angle of the first sub-inclined surface 241 may also be greater than the inclination angle of the second sub-inclined surface 241, or the inclination angle of the first sub-inclined surface 241 may also be equal to the inclination angle of the second sub-inclined surface 241, which is not limited herein.

[0088] Please refer to Figure 4 、 Figure 5 and Figure 21 In some embodiments, the first air guiding surface 24 is a curved surface, convex along the flow direction of the air flow in the main air duct 101, so that the first air guiding surface 24 can guide more air flow to the hot spot area 103 more smoothly, thereby reducing the temperature of the hot spot area 103 faster. Specifically, the opening of the first air guiding surface 24 may face downward or may face the hot spot area 103, so that the air flow can flow along the first air guiding surface 24 to the hot spot area 103. The tangent plane at the end of the first air guiding surface 24 far from the main air duct 101 may be parallel to the end face 1013 of the air outlet 1011 or form an included angle. In one example, in the direction from the main air duct 101 to the hot spot area 103, the included angle between the tangent line of each point of the first air guiding surface 24 and the end face 1013 of the air outlet 1011 gradually decreases, or the included angle between the tangent line of each point of the first air guiding surface 24 and the end face 1013 of the air outlet 1011 gradually decreases to zero and then gradually increases.

[0089] Further, please refer to Figure 4 、 Figure 5 and Figure 21, the curved surface of the first air guiding surface 24 may include a plurality of sub-curved surfaces connected in sequence. At least one sub-curved surface extends exponentially. The exponentially extending sub-curved surface can have a better guiding effect, so that the air flow can flow to the hot spot area 103 more accurately and smoothly. Among them, the number of sub-curved surfaces extending exponentially can be one, two, three, four or more, which will not be listed one by one here. For example, in one embodiment, multiple sub-curved surfaces all extend exponentially. Another example is that the sub-curved surface closest to the main air duct 101 extends exponentially to guide the air flow in the main air duct 101 more smoothly to the first air duct 102. Or, multiple sub-curved surfaces close to the main air duct 101 extend exponentially. It should be noted that the sub-curved surface extending exponentially specifically may refer to the contour line of the sub-curved surface extending exponentially such as a quadratic function curve, a cubic function curve, a quartic function curve, a quintic function curve, etc., such as a parabola. The exponentially extending direction can extend towards the direction close to the hot spot area 103, or can extend towards the direction away from the hot spot area 103, which is not limited here.

[0090] Please refer to Figure 4 , Figure 5 and Figure 21 , in some embodiments, along the direction from the main air duct 101 to the hot spot area 103, the first air guiding surface 24 includes a first sub-curved surface 242, a second sub-curved surface 243 and a first sub-plane 244 connected in sequence. The first sub-curved surface 242 may be located in the main air duct 101. The first sub-curved surface 242 can shunt the air flow flowing in the main air duct 101, so that part of the air flow enters the first air duct 102. For example, the contour of the first sub-curved surface 242 can be an arc. The arc can be located in the main air duct 101. One end of the arc can extend along the flow direction of the air flow in the main air duct 101, and the other end of the arc can extend towards the hot spot area 103, so that the air flow close to the edge in the main air duct 101 can be shunted when reaching the first sub-curved surface 242, and part of the air flow can flow to the second sub-curved surface 243 and then leave the main air duct 101. Of course, the contour of the first sub-curved surface 242 is not limited to an arc, and can also be a curve with a relatively small curvature such as an ellipse or a water droplet-shaped leading edge, or directly adopt a wedge structure, which will not be listed one by one here.

[0091] The second sub-surface 243 can extend towards the hot spot area 103. The second sub-surface 243 can be used to guide the airflow flowing into the first air duct 102 towards the hot spot area 103, so that the airflow can flow to the hot spot area 103. Specifically, the opening of the contour line of the second sub-surface 243 can face the hot spot area 103, or the direction of the opening is opposite to the flowing direction of the airflow in the main air duct 101, so that when the airflow flows out of the second sub-surface 243, it can flow towards the hot spot area 103. Further, the second sub-surface 243 can extend in an exponential shape, so that the airflow flowing through the second guiding surface 25 is smoother and the directivity after flowing out of the second sub-surface 243 is better.

[0092] Please continue to refer to Figure 4 、 Figure 5 and Figure 21 , in one embodiment, along the guiding direction of the first guiding surface 24, the included angle between the tangent line of each point of the second sub-surface 243 and the end surface 1013 of the air outlet 1011 gradually decreases. In Figure 20 the illustrated embodiment, the shape of the contour line of the second sub-surface 243 can be seen. The guiding direction of the first guiding surface 24 is the flowing direction of the airflow in the first air duct 102 after the airflow in the main air duct 101 enters the first air duct 102. Along the guiding direction of the first guiding surface 24, the included angle between the tangent line of each point of the second sub-surface 243 and the end surface of the reflector cup 12 close to the air outlet 1011 gradually decreases. This end surface is parallel to the end surface 1013 of the air outlet 1011. For example, Figure 21 in, along the guiding direction of the first guiding surface 24, point B is after point A. The included angle θ1 between the tangent line of point A and this end surface is greater than the included angle θ2 between the tangent line of point B and the end surface 1301. Then the second sub-surface 243 gradually extends towards the direction parallel to this end surface, so that the flowing direction of the airflow when the airflow flows out of the second sub-surface 243 has a smaller included angle with this end surface, and the airflow is not likely to have a large impact on the mounting cover 13 and the hot spot area, and thus can take away more heat from the hot spot area 103.

[0093] The first sub-plane 244 is connected to the second sub-surface 243. The airflow flows towards the first sub-plane 244 after flowing out of the second sub-surface 243. The first sub-plane 244 is parallel to the end surface 1013 of the air outlet 1011 or inclined towards the end surface 1013 of the air outlet 1011, so that after the airflow flows through the first sub-plane 244, the first sub-plane 244 can guide the airflow, and more airflow can flow to the hot spot area 103. In Figure 20In the illustrated embodiment, the first sub-plane 244 is parallel to the end face 1013 of the air outlet 1011, so that after the air flow flows out from the first sub-plane 244, it does not impact the hot spot area 103. The air flow can pass through the hot spot area 103 more smoothly and carry away more heat from the hot spot area 103. The guiding direction of the air flow can be controlled by controlling the length ratio of the first sub-plane 244 and the second sub-curved surface 243, so that the air flow flows to the hot spot area 103 more smoothly, stably and accurately.

[0094] Of course, in other embodiments, the first sub-plane 244 can also be inclined away from the hot spot area 103, or the first sub-plane 244 can also be inclined towards the hot spot area 103, which will not be listed one by one here. When the first sub-plane 244 is inclined towards the hot spot area 103, the included angle between the first sub-plane 244 and the end face 1013 of the air outlet 1011 can be less than 30°, for example, it can be 5°, 7°, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 28°, 30°, etc. On the one hand, it can avoid the phenomenon that the inclination angle of the first sub-plane 244 away from the hot spot area 103 is too large, resulting in less air flow reaching the hot spot area 103 and affecting the heat dissipation effect of the hot spot area 103. On the other hand, it can avoid the phenomenon that the inclination angle of the first sub-plane 244 towards the hot spot area 103 is too large, resulting in a large impact between the air flow and the hot spot area 103, affecting the heat dissipation effect of the hot spot area 103, and even possibly causing the temperature of the hot spot area 103 to rise.

[0095] Please refer to Figure 4 、 Figure 5 and Figure 18 In some embodiments, the first deflector 20 may further include a second deflector surface 25 opposite to the first deflector surface 24. The second deflector surface 25 can guide the air flow reaching the second deflector surface 25 into the main air duct 101 and converge with the air flow flowing in the main air duct 101. It can be understood that part of the air flow flowing out from the first air duct 102 can reach the second deflector surface 25, or the external air flow outside the second deflector surface 25 can reach the second deflector surface 25. The second deflector surface 25 can guide the air flow reaching the second deflector surface 25 towards the main air duct 101 and converge with the air flow in the main air duct 101. On the one hand, it can enhance the air flow rate flowing out from the main air duct 101, and on the other hand, it can also enhance the temperature of the air flow flowing out from the main air duct 101. Among them, in one example, the second deflector surface 25 can be symmetrical with the first deflector surface 24.

[0096] Further, please combine with Figure 18, in some embodiments, the second flow guiding surface 25 may include at least one inclined surface. Along the flow direction of the air flow in the main air duct 101, the inclined surface is inclined at a predetermined angle towards the main air duct 101. It can be understood that the second flow guiding surface 25 may include one, two, three, four, five or more inclined surfaces, and the inclined surfaces may be inclined at a predetermined angle towards the main air duct 101. The predetermined angle may be 30°, 40°, 45°, 55°, 60°, 70°, 75°, 80°, 90°, 100°, 120° or more angles, which are not listed one by one here. Among them, the predetermined angle refers to the included angle between the inclined surface and the flow direction of the air flow in the main air duct 101. In this way, since the inclined surface is inclined towards the hot spot area 103, the air flow is more likely to converge with the air flow in the main air duct 101 after flowing along the second flow guiding surface 25.

[0097] Please refer to Figure 19 , the second flow guiding surface 25 may include a plurality of sub-inclined surfaces 251. The sub-inclined surface 251 closest to the air outlet of the first air duct 102 extends along the flow direction of the air flow in the main air duct 101 and away from the hot spot area 103. The inclination angle of the sub-inclined surface 251 farthest from the air outlet of the first air duct 102 is greater than the inclination angle of the sub-inclined surface 251 closest to the air outlet of the first air duct 102. Thus, the air flow can better converge with the air flow in the main air duct 101 after flowing on the second flow guiding surface 25, and the phenomenon of fluid separation is not likely to occur.

[0098] Specifically, the second flow guiding surface 25 may include two, three, four, five or more sub-inclined surfaces 251. The plurality of sub-inclined surfaces 251 may be connected end to end to form the second flow guiding surface 25. The air flow reaching the second flow guiding surface 25 flows from the sub-inclined surface closest to the air outlet of the first air duct 102 to the sub-inclined surface farthest from the air outlet of the first air duct 102 in sequence. It should be noted that the inclination angle refers to the angle at which the sub-inclined surface 251 inclines towards the main air duct 101, that is, the angle between the sub-inclined surface 251 and the flow direction of the air flow in the main air duct 101. Define the sub-inclined surface 251 closest to the air outlet of the first air duct 102 as the first sub-inclined surface 2511, and the sub-inclined surface farthest from the air outlet of the first air duct 102 as the second sub-inclined surface 2512. The inclination angle of the first sub-inclined surface 2511 is β1, and the inclination angle of the second sub-inclined surface 2512 is β2. The inclination angle of any sub-inclined surface 251 located between the first sub-inclined surface 2511 and the second sub-inclined surface 2512 may be between β1 and β2, or may be greater than β2 or less than β1, which is not limited here. In one embodiment, from the first sub-inclined surface 2511 to the second sub-inclined surface 2512, the inclination angle of the sub-inclined surface 251 gradually decreases. In this way, during the process of the air flow flowing from the first sub-inclined surface 2511 to the second sub-inclined surface 2512, the air flow is smoother and better converges with the air flow in the main air duct 101.

[0099] Of course, in other embodiments, the inclination angle of the first sub-inclined surface 2511 may also be greater than that of the second sub-inclined surface 2512, or the inclination angle of the first sub-inclined surface 2511 may also be equal to that of the second sub-inclined surface 2512, which is not limited herein.

[0100] Please refer to Figure 4 , Figure 5 , Figure 18 and Figure 21 , in some embodiments, the second guiding surface 25 is a curved surface that is concave along the flowing direction of the air flow in the main air duct 101, so that the second guiding surface 25 can guide more air flow to the main air duct 101 more smoothly and converge with the air flow flowing out of the main air duct 101, thereby more quickly reducing the temperature of the hot spot area 103. Specifically, the opening of the second guiding surface 25 may face upward, so that the air flow can flow along the second guiding surface 25 to the main air duct 101, and the tangent line of the end point of the contour line of the second guiding surface 25 may be parallel to or form an angle with the flowing direction of the air flow in the main air duct 101. In one example, along the guiding direction of the second guiding surface 25, the angle between the tangent line of each point of the contour line of the second guiding surface 25 and the end face of the main air duct 101 gradually increases, so that the flowing direction of the air flow on the second guiding surface 25 and the flowing direction of the air flow in the main air duct 101 gradually decrease. Further, the tangent line of the end point of the contour line of the second guiding surface 25 is perpendicular to the end face of the main air duct 101, so that the air flow flowing out of the second guiding surface 25 is parallel to the air flow flowing out of the main air duct 101, and the phenomenon of fluid mutual impact is not likely to occur.

[0101] Further, please continue to refer to Figure 4 , Figure 5 , Figure 18 and Figure 21 , the curved surface (i.e., the second guiding surface 25) may include a plurality of sub-curved surfaces connected in sequence, and at least one sub-curved surface extends exponentially. The sub-curved surface extending exponentially can have a better guiding effect, so that the air flow can converge with the air flow in the main air duct 101 more smoothly. Among them, the number of sub-curved surfaces extending exponentially may be one, two, three, four or more, which are not listed one by one here. For example, in one embodiment, multiple sub-curved surfaces all extend exponentially. Another example is that the sub-curved surface closest to the air outlet of the first air duct 102 extends exponentially to more smoothly guide the air flow flowing out of the air outlet of the first air duct 102 and reaching the second guiding surface 25 to the main air duct 101. Or, multiple sub-curved surfaces close to the main air duct 101 extend exponentially. It should be noted that the sub-curved surface extending exponentially may specifically refer to the contour line of the sub-curved surface extending exponentially such as a quadratic function curve, a cubic function curve, a quartic function curve, a quintic function curve, etc., such as a parabola. The direction of exponential extension may extend in the flowing direction of the air flow in the main air duct 101.

[0102] Please continue to refer to Figure 4 , Figure 5 , Figure 18 and Figure 21 . In some embodiments, along the direction from the hot spot area 103 to the main air duct 101, the second guiding surface 25 includes a first sub-plane 251, a first sub-curved surface 253, and a second sub-curved surface 254 that are sequentially connected. The air flow flowing out of the first air duct 102 can flow back to the second guiding surface 25 through an external wind shielding structure (such as Figure 23 the protrusion 105 shown), and then flow to the first sub-plane 251 first, and then to the first sub-curved surface 253 and the second sub-curved surface 254. The first sub-plane 251 can be parallel to the end surface 1013 of the air outlet 1011 or inclined toward the hot spot area 103, so that after the air flow passes through the first sub-plane 251, the first sub-plane 251 can guide the air flow, and the air flow is relatively stable when flowing on the first sub-plane 251. In Figure 20 the embodiment shown, the first sub-plane 251 is parallel to the end surface 1013 of the air outlet 1011.

[0103] When the first sub-plane 251 is inclined toward the hot spot area 103, the angle between the first sub-plane 251 and the end surface 1013 of the air outlet 1011 can be less than 30°, for example, it can be 5°, 7°, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 28°, 30° or more angular values, which are not listed one by one here. In this way, on the one hand, it can be avoided that: the inclination angle of the first sub-plane 251 toward the direction away from the hot spot area 103 is too large, resulting in a decrease in the flow velocity of the air flow on the first sub-plane 251, and only a small amount of air flow can flow to the first sub-curved surface 253.

[0104] The first sub-curved surface 253 can extend along the flow direction of the air flow in the main air duct 101. The first sub-curved surface 253 can be used to guide the air flow flowing to the first sub-curved surface 253 in the same direction as the flow direction of the air flow in the main air duct 101, so that the air flow can gather with the air flow in the main air duct 101 more smoothly. Specifically, the opening direction of the contour line of the first sub-curved surface 253 is the same as the flow direction of the air flow in the main air duct 101, so that the air flow can flow toward the main air duct 101 when flowing out of the first sub-curved surface 253. Further, the first sub-curved surface 253 can extend exponentially, so that the air flow is smoother when flowing through the first guiding surface 24 and has better directivity after flowing out of the first sub-curved surface 253.

[0105] Please refer to Figure 4 , Figure 5 , Figure 18 and Figure 21, in one embodiment, along the guiding direction of the second guiding surface 25, that is, the flowing direction of the air flow on the second guiding surface 25, the included angle between the tangent line of each point of the first sub-surface 253 and the end surface 1013 of the air outlet 1011 gradually increases. In Figure 20 In the embodiment shown, the shape of the contour line of the first sub-surface 253 can be seen. The first sub-surface 253 can be in a concave shape. Along the guiding direction of the second guiding surface 25, the included angle between the tangent line of each point of the first sub-surface 253 and the end surface of the reflector cup 120 close to the air outlet 1011 gradually increases. For example, Figure 21 in, along the guiding direction of the second guiding surface 25, point D is after point C. The included angle δ1 between the tangent line of point C and this end surface is smaller than the included angle δ1 between the tangent line of point D and this end surface. Then the first sub-surface 253 gradually extends in a direction parallel to the flowing direction of the air flow in the main air duct 101, so that the included angle between the flowing direction of the air flow when flowing out from the first sub-surface 253 and the flowing direction of the air flow in the main air duct 101 is smaller, and the air flow is not easy to collide with the air flow in the main air duct 101. Furthermore, it can be more smoothly combined with the air flow in the main air duct 101. The guiding direction of the air flow can be controlled by controlling the length ratio of the first sub-plane 251 and the first sub-surface 253, so that the air flow flows more smoothly and steadily in the flowing direction of the air flow in the main air duct 101.

[0106] The second sub-surface 254 can be located in the main air duct 101. The second sub-surface 254 can converge the air flow flowing through the first sub-surface 253 and the air flow in the main air duct 101, so that these two air flows can be converged into one air flow. The contour of the second sub-surface 254 can be a downwardly convex arc. The arc can be located in the main air duct 101. One end of the arc can extend along the opposite direction of the flowing direction of the air flow in the main air duct 101, and the other end of the arc can extend towards the main air duct 101. Part of the second sub-surface 254 can guide the air flow in the main air duct 101, and another part of the second sub-surface 254 can guide the air flow flowing out from the first sub-surface 253, so that the two air flows can be converged together into one air flow. Of course, the contour of the second sub-surface 254 is not limited to an arc, and can also be a curve with a relatively small curvature such as an ellipse or a water droplet-shaped leading edge, which will not be listed one by one here.

[0107] Please refer to Figures 18 to 21, in some embodiments, the first deflector 20 may further include a third deflector surface 26 and a fourth deflector surface 27 connecting the first deflector surface 24 and the second deflector surface 25. The third deflector surface 26 is closer to the hot spot area 103 than the fourth deflector surface 27. The third deflector surface 26 can be used to guide a part of the air flow flowing out through the first guiding surface to the second deflector surface 25. The third deflector surface 26 may include one or more of a curved surface, an inclined surface, and an irregular curved surface. A part of the air flow flowing out of the first air duct 102 can directly flow through the third deflector surface 26 to the second deflector surface 25, and when a part of the air flow flowing through the hot spot area 103 returns to the third deflector surface 26, it can be guided by the third deflector surface 26 to the second deflector surface 25, and then be guided by the second deflector surface 25 to converge with the air flow in the main air duct 101 in the main air duct 101.

[0108] Further, please refer to Figure 21 , the third deflector surface 26 may include a plurality of sub - surfaces 261. Along the flow direction of the air flow in the main air duct 101, the sub - surface 261 connected to the first deflector surface 24 is concave, and the sub - surface 261 connected to the second deflector surface 25 is convex. Thus, the sub - surface 261 connected to the first deflector surface 24 can better guide a part of the air flow flowing out of the first air duct 102 and a part of the air flow flowing through the hot spot area 103 to the next sub - surface 261, and the sub - surface 261 connected to the second deflector surface 25 can better guide the air flow reaching this sub - surface 261 to the second deflector surface 25.

[0109] In Figure 20 the illustrated embodiment, the third deflector surface 26 may include two sub - surfaces 261. Define the sub - surface connected to the first deflector surface 24 as the first sub - surface 2611, and define the sub - surface connected to the second deflector surface 25 as the second sub - surface 2612. The first sub - surface 2611 can be connected to the second sub - surface 2612. The contour line of the first sub - surface 2611 can be a concave curve, and the contour line of the second sub - surface 2612 can be a concave - up curve. The tangent line at the starting point of the contour line of the first sub - surface 2611 can be parallel or coincident with the tangent line at the end point of the contour line of the first deflector surface 24, and the tangent line at the end point of the contour line of the second sub - surface 2612 can be parallel or coincident with the tangent line at the starting point of the contour line of the second deflector surface 25, so that the transition between the first deflector surface 24 and the third deflector surface 26 is relatively smooth, and the transition between the third deflector surface 26 and the first deflector surface 24 is relatively fluent. Furthermore, the third deflector surface 26 can better guide a part of the air flow flowing out of the first air duct 102 and a part of the air flow returning to the hot spot area 103 to the second deflector surface 25. Among them, the first sub - surface 2611 and the second sub - surface 2612 can be symmetrical.

[0110] Please refer to Figures 18 to 21, the fourth flow guiding surface 27 can be parallel to the flowing direction of the air flow in the main air duct 101. The fourth flow guiding surface 27 can be located inside the main air duct 101. The air flow shunted by the first sub-surface 242 of the first flow guiding surface 24 in the main air duct 101 can continue to flow along the fourth flow guiding surface 27, and then a negative pressure can be formed near the second sub-surface 254. Under the action of the negative pressure, the air flow flowing from the first sub-surface 252 of the second flow guiding surface 25 to the second sub-surface 254 will flow towards the main air duct 101, and thus can converge with the air flow in the main air duct 101.

[0111] Please refer to Figure 5 and Figure 23 , in some embodiments, the drying device 100 further includes a protrusion 105 located at one end of the hot spot area 103 away from the first air duct 102 and protruding from the end surface of the hot spot area 103 facing away from the heating source 11. The protrusion 105 is used to make the air flow flowing out of the first air duct 102 and flowing through the hot spot area 103 flow back. Specifically, most or all of the air flow flowing out of the first air duct 102 can flow through the hot spot area 103 and continue to flow. A protrusion 105 protruding from the hot spot area 103 is provided at one end of the hot spot area 103 away from the first air duct 102. When the air flow flowing through the hot spot area 103 reaches the protrusion 105, the protrusion 105 can make the air flow flow back to the hot spot area 103, or the protrusion 105 can guide the air flow to flow in a direction away from the hot spot area 103 first and then flow back in a direction close to the first air duct 102 to form a vortex. Thus, the air flow can circulate to dissipate heat from the hot spot area 103, improving the heat dissipation effect on the hot spot area 103. Figure 22 It can be clearly seen in [reference] that the protrusion 105 makes the air flow flowing out of the first air duct 102 form a vortex in front of the hot spot area 103.

[0112] Figure 22 and Figure 23 in [reference], the darker the color, the greater the air volume. Figure 22 When the first flow guiding member 20 is not used in [reference], no air flow flows through the hot spot area 103, and the hot spot area 103 is prone to overheating. Figure 23 When the first flow guiding member 20 is used in [reference], more air flow passes through the hot spot area 103, and the hot spot area 103 can be dissipated of heat.

[0113] Further, the contour of the protrusion 105 can be in the shape of a water droplet, a trapezoid, a triangle, an arc, etc., which will not be enumerated one by one here. The protrusion 105 may include a reflux surface close to the hot spot area 103, and the air flow flowing through the reflux surface from the hot spot area 103 can form a reflux. The reflux surface can be an inclined surface, and the inclined surface can form an angle with the end surface 1013 of the air outlet 1011. The angle can be 110 degrees, 120 degrees, 130 degrees, 135 degrees, 140 degrees, 150 degrees or more degrees, so that the air flow can form a reflux after flowing through the reflux surface. The reflux surface can also be a curved surface, and the curved surface can be concave upward, so that the air flow can form a reflux after flowing through the reflux surface. The opening of the curved surface can also face the hot spot area 103 or the main air duct 101, so that the air flow can flow to the hot spot area 103 or above the hot spot area 103 after reflux, and circulate to enhance the heat dissipation effect on the hot spot area 103.

[0114] Among them, the protrusion 105 can be formed by the housing 30 protruding from the hot spot area 103, the protrusion 105 can also be formed by the optical element 60 protruding from the hot spot area 103, and the protrusion 105 can also be formed by the heating component 30.

[0115] Please refer to Figure 5 and Figure 18 , in some embodiments, a guiding surface 1021 can be formed on the surface of the first air duct 102 opposite to the first guiding member 20. The guiding surface 1021 can be used to jointly guide a part of the air flow in the main air duct 101 into the first air duct 102 with the first guiding surface 24. It can be understood that the first air duct 102 can be jointly formed by the first guiding surface 24 and the guiding surface 1021. In Figure 17 the illustrated embodiment, the guiding surface 1021 is the end surface at the air outlet 1011 of the main air duct 101. The contour curve of the guiding surface 1021 can be the same as the shape of the contour curve of the first guiding surface 24, or the contour curve of the guiding surface 1021 can be the same as the shape of a part of the contour curve of the first guiding surface 24, so that the guiding surface 1021 can have the same guiding direction as the first guiding surface 24. Furthermore, the directivity of the air flow after flowing out of the first air duct 102 is stronger, and the phenomenon of fluid separation is not likely to occur.

[0116] Further, in some embodiments, the guiding surface 1021 can be an inclined surface, and the inclined surface can extend along the flowing direction of the air flow in the main air duct 101 and towards the hot spot area 103, so that the air flow can flow to the hot spot area 103 after passing through the inclined surface. In one example, when the through hole 131 of the mounting cover 13 forms the main air duct 101, the slope of the inclined surface can be positive, so that the guiding surface 1021 can better guide the air flow in the main air duct 101 to the hot spot area 103. In another example, when the main air duct 101 is formed between the mounting cover 13 and the inner surface of the housing, the slope of the inclined surface can be negative, so that the guiding surface 1021 can better guide the air flow in the main air duct 101 to the hot spot area 103.

[0117] Further, in some other embodiments, the guiding surface 1021 can be a curved surface. Along the flowing direction of the air flow in the main air duct 101, at least part of the guiding surface 1021 protrudes upwards, so that the air flow flowing through the guiding surface 1021 can flow to the hot spot area 103. Specifically, it can be that the entire guiding surface 1021 protrudes upwards, or part of the guiding surface 1021 protrudes upwards, which is not limited herein. Along the guiding direction of the guiding surface 1021, the included angle between the tangent line of each point on the contour line of the guiding surface 1021 and the end surface 1013 of the air outlet 1011 gradually decreases, so that the guiding surface 1021 can better guide the air flow to the hot spot area 103.

[0118] Please refer to Figure 12 , the structure of the second flow guiding member 50 is similar to or the same as that of the first flow guiding member 20, which will not be described in detail herein. In some embodiments, the second flow guiding member 50 and the first flow guiding member 20 can be a split structure. The second flow guiding member 50 can be fixed on the housing 30, and the first flow guiding member 20 can be fixed on the heating assembly 10. In some embodiments, the second flow guiding member 50 and the first flow guiding member 20 can be an integral structure. For example, the second flow guiding member 50 and the first flow guiding member 20 can be manufactured into an integral structure by an integral molding process. A support rib can be provided between the first flow guiding member 20 and the second flow guiding member 50 for connection. The first flow guiding member 20 can be fixed on the heating assembly 10, and the second flow guiding member 20 does not need to be fixed, or the first flow guiding member 20 does not need to be fixed, the second flow guiding member 20 can be fixed on the housing 30, or the second flow guiding member 50 can be fixed on the housing 30, and the first flow guiding member 20 can be fixed on the heating assembly 10.

[0119] In the description of this specification, the descriptions referring to terms such as "certain embodiments", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0120] 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 at least one of the said features. In the description of the present application, "a plurality" means at least two, for example two, three, unless otherwise specifically and clearly defined.

[0121] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A drying device, characterized in that, the drying device is formed with a main air duct and a first air duct communicating with the main air duct, and the drying device includes: a heating component that can generate thermal radiation and form a hot spot area, the heating component includes one or more reflector cups and a heating source, and the heating source is arranged in each reflector cup, and the external space facing the reflector cup constitutes the hot spot area; and an optical element, the optical element is installed on the end face of the reflector cup close to the air outlet of the main air duct, and the optical element forms at least part of the hot spot area; a first flow guiding member, at least part of the first flow guiding member is located in the main air duct, and the first flow guiding member is used for guiding part of the air flow in the main air duct to the first air duct and enabling the air flow flowing through the first air duct to flow to the hot spot area; the first flow guiding member is arranged at the air outlet of the main air duct, and the drying device further includes a housing, the housing forms the main air duct, and the air flow passes through the housing along the main air duct and flows out of the drying device from the air outlet to blow towards the target object.

2. The drying device according to claim 1, characterized in that, the first flow guiding member is installed at the end of the air outlet of the main air duct and covers at least part of the air outlet of the main air duct.

3. The drying device according to claim 1, characterized in that, the first flow guiding member is spaced from the end face of the air outlet of the main air duct, and the first flow guiding member and the end face of the air outlet form the first air duct.

4. The drying device according to claim 1, characterized in that, a ventilation hole penetrating through the side wall is formed on the side wall of the main air duct, the ventilation hole forms the first air duct, one end of the ventilation hole is communicated with the main air duct, the other end of the ventilation hole faces the hot spot area, and the edge of the ventilation hole along the air flow direction of the main air duct forms the first flow guiding member.

5. The drying device according to claim 4, characterized in that, on the inner surface of the side wall of the main air duct on one side of the ventilation hole along the air flow direction, a convex portion protruding towards the center line of the main air duct is provided, and the convex portion is used for guiding part of the air flow in the main air duct into the ventilation hole, and the edge of the ventilation hole along the air flow direction of the main air duct and the convex portion form the first flow guiding member.

6. The drying device according to claim 1, characterized in that, a ventilation pipe is provided on the side wall of the main air duct, the ventilation pipe forms the first air duct, one end of the ventilation pipe is communicated with the main air duct, the other end of the ventilation pipe faces the hot spot area, and the ventilation pipe forms the first flow guiding member.

7. The drying device according to claim 1, characterized in that, the heating component is located in the main air duct.

8. The drying device according to claim 1, characterized in that, the heating component is located between the main air duct and the housing.

9. The drying device according to claim 8, characterized in that, the heating component surrounds the main air duct.

10. The drying device according to claim 1, characterized in that, The heating component is located on one side of the main air duct.

11. The drying device according to claim 9, wherein, the heating component further includes a mounting cover, the mounting cover is provided with a plurality of the reflecting cups, and the mounting cover has an end face facing the hot spot area.

12. The drying device according to claim 11, wherein, the end face is provided with a through hole communicating with the main air duct, and the first flow guiding member is installed on the inner side wall of the through hole.

13. The drying device according to claim 12, wherein, a gap communicating with the main air duct is formed between the end face and the housing; the drying device further includes a second air duct communicating with the main air duct and a second flow guiding member installed on the housing, and the second flow guiding member is used for guiding a part of the air flow in the main air duct to enter the second air duct from between the end face and the housing, and for making the air flow flowing through the second air duct flow to the hot spot area.

14. The drying device according to claim 13, wherein, the air flow flowing out of the second air duct and the air flow flowing out of the first air duct converge at the hot spot area.

15. The drying device according to claim 1, wherein, the first flow guiding member is detachably connected to the air outlet of the main air duct; or the first flow guiding member is non-detachably connected to the air outlet of the main air duct.

16. The drying device according to claim 1, wherein, the first flow guiding member is arranged at the air outlet of the main air duct, and the first flow guiding member includes a first flow guiding surface opposite to the main air duct, and the first flow guiding surface is used for guiding a part of the air flow in the main air duct to flow towards the hot spot area.

17. The drying device according to claim 16, wherein, the first flow guiding surface includes at least one inclined surface, and along the flowing direction of the air flow in the main air duct, the inclined surface is inclined at a predetermined angle towards the hot spot area.

18. The drying device according to claim 16, wherein, the first flow guiding surface includes a plurality of sub-inclined surfaces, the sub-inclined surface closest to the main air duct extends along the flowing direction of the air flow in the main air duct and towards the hot spot area, and the inclination angle of the sub-inclined surface farthest from the main air duct is greater than the inclination angle of the sub-inclined surface closest to the main air duct.

19. The drying device according to claim 16, wherein, the first flow guiding surface is a curved surface, and along the flowing direction of the air flow in the main air duct, the curved surface is convex.

20. The drying device according to claim 19, wherein, the curved surface includes a plurality of sub-curved surfaces connected in sequence, and at least one of the sub-curved surfaces extends exponentially.

21. The drying device according to claim 16, wherein, In the direction from the main air duct to the hot spot area, the first guiding surface includes a first sub-curved surface, a second sub-curved surface, and a first sub-plane that are sequentially connected. The first sub-curved surface is located within the main air duct and is used to split the air flow within the main air duct so that part of the air flow enters the first air duct. The second sub-curved surface extends towards the hot spot area and is used to guide the air flow flowing into the first air duct to the hot spot area. The first sub-plane is parallel to the end surface of the air outlet of the main air duct or is inclined towards the direction where the hot spot area is located.

22. The drying device according to claim 21, wherein, In the guiding direction of the first guiding surface, the included angle between the tangent of each point of the second sub-curved surface and the end surface of the air outlet of the main air duct gradually decreases.

23. The drying device according to claim 16, wherein, The first guiding member further includes a second guiding surface opposite to the first guiding surface, and the second guiding surface is used to guide the air flow reaching the second guiding surface into the main air duct.

24. The drying device according to claim 23, wherein, The second guiding surface includes at least one inclined surface, and along the flowing direction of the air flow within the main air duct, the inclined surface is inclined at a predetermined angle towards the main air duct.

25. The drying device according to claim 23, wherein, The second guiding surface includes a plurality of sub-inclined surfaces. The sub-inclined surface closest to the air outlet of the first air duct extends along the flowing direction of the air flow within the main air duct and away from the hot spot area. The inclination angle of the sub-inclined surface farthest from the air outlet of the first air duct is smaller than the inclination angle of the sub-inclined surface closest to the air outlet of the first air duct.

26. The drying device according to claim 23, wherein, The second guiding surface is a curved surface, and along the flowing direction of the air flow within the main air duct, the curved surface is concave.

27. The drying device according to claim 26, wherein, The curved surface includes a plurality of sub-curved surfaces that are sequentially connected, and at least one of the sub-curved surfaces extends exponentially.

28. The drying device according to claim 23, wherein, In the direction from the hot spot area to the main air duct, the second guiding surface includes a first sub-plane, a first sub-curved surface, and a second sub-curved surface that are sequentially connected. The first sub-plane is parallel to the end surface of the air outlet of the main air duct or is inclined towards the direction where the hot spot area is located. The first sub-curved surface is concave, and the first sub-curved surface is used to guide the air flow flowing through the first sub-plane in the flowing direction of the air flow within the main air duct. The second sub-curved surface is located within the main air duct and is used to converge the air flow flowing through the first sub-curved surface and the air flow within the main air duct.

29. The drying device according to claim 28, wherein, In the guiding direction of the second guiding surface, the included angle between the tangent of each point of the first sub-curved surface and the outer surface of the hot spot area gradually increases.

30. The drying device according to claim 23, wherein, The first deflector further includes a third deflector surface connecting the first deflector surface and the second deflector surface, and the third deflector surface is configured to guide a part of the air flow flowing out of the first deflector surface to the second deflector surface.

31. The drying device according to claim 30, wherein, the third deflector surface includes a plurality of sub - surfaces. Along the flow direction of the air flow in the main air duct, the sub - surface connecting the first deflector surface is concave, and the sub - surface connecting the second deflector surface is convex.

32. The drying device according to claim 1, wherein, the drying device further includes a protrusion located at one end of the hot - spot area away from the first air duct and protruding from the hot - spot area, and the protrusion is configured to cause the air flow flowing out of the first air duct and flowing through the hot - spot area to flow back.

33. The drying device according to claim 1, wherein, a guiding surface is formed on the surface of the first air duct opposite to the first deflector, and the guiding surface is configured to jointly guide a part of the air flow in the main air duct into the first air duct with the first deflector.

34. The drying device according to claim 33, wherein, the guiding surface is an inclined surface, and the slope of the inclined surface is positive.

35. The drying device according to claim 33, wherein, the guiding surface is a curved surface, and at least part of the guiding surface is convex along the flow direction of the air flow in the main air duct.

36. The drying device according to claim 1, wherein, the included angle between the direction of the air flow flowing to the hot - spot area and the flow direction of the air flow in the main air duct is greater than 30 degrees.

37. The drying device according to claim 1, wherein, the heating source includes a light source, the optical element is arranged on the optical path of the light source, and the optical element is configured to filter or reflect the visible light emitted by the light source.

38. The drying device according to claim 37, wherein, the optical element includes a light - emitting part, the heat emitted by the light source enters the outside through the light - emitting part, and at least part of the hot - spot area is formed at the light - emitting part.

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