Handheld beauty devices

Abstract

This utility model belongs to the field of beauty equipment technology and discloses a handheld beauty device, including a first airflow duct, a second airflow duct, and a fan. A light source is arranged inside the first airflow duct, and heat dissipation fins are arranged inside the second airflow duct. An airflow port connects the first and second airflow ducts. The fan provides a first airflow to the first airflow duct to dissipate a first portion of heat, and a second airflow to the second airflow duct to dissipate a second portion of heat. The first airflow can at least partially enter the second airflow duct through the airflow port and merge with the second airflow before being discharged. This utility model improves the discharge efficiency of the first airflow in the first airflow duct, which is beneficial for balanced heat dissipation inside the beauty device. Furthermore, the high heat instantaneously generated by the light source can at least partially enter the second airflow duct with the first airflow through the airflow port, thereby improving the heat dissipation effect on the light source.

Description

Technical Field

[0001] This utility model relates to the field of beauty equipment technology, and in particular to a handheld beauty device. Background Technology

[0002] Beauty devices can be categorized by function, including whitening, skin rejuvenation, wrinkle removal, and hair removal. The most common type uses light of a specific wavelength to achieve these different functions. As user needs continue to change, these beauty devices are gradually shifting from large instruments to miniaturized personal care devices.

[0003] For example, beauty devices that rely on light to act on the skin often need to release a large amount of light energy during operation to achieve their function, which is accompanied by the accumulation of a large amount of heat energy inside the device. Due to their small size, miniaturized personal care devices have particularly high requirements for heat dissipation design.

[0004] Some of the aforementioned beauty devices include a light source, a cooling system, and a heat dissipation system. The cooling system is used to output refrigerant to achieve the effect of cooling the skin, while the heat dissipation system needs to solve the problem of heat generated by the light source and the cooling system. In existing technologies, the heat generated by the light source is significantly higher than that generated by the cooling system, which leads to uneven heat dissipation inside the beauty device. Generally speaking, a better heat dissipation solution is needed for the heat generated by the light source in the high-heat area to achieve overall temperature balance of the device. Utility Model Content

[0005] The purpose of this invention is to provide a handheld beauty device to solve the problems of uneven heat dissipation and poor heat dissipation effect of the light source in handheld beauty devices.

[0006] To achieve this objective, the present invention adopts the following technical solution: A handheld beauty device includes a light source, a cooling system, and heat dissipation fins. The light source provides light energy and generates a first portion of heat. The cooling system cools the handheld beauty device and generates a second portion of heat. The heat dissipation fins conduct and dissipate at least a portion of the second portion of heat. The handheld beauty device further includes: A first airflow duct, wherein the light source is arranged inside the first airflow duct; The second airflow duct, wherein the heat dissipation fins are arranged inside the second airflow duct; An airflow port is disposed between and connected to the first airflow pipe and the second airflow pipe; A fan provides a first airflow to the first airflow duct to dissipate the first portion of heat, and the fan provides a second airflow to the second airflow duct to dissipate the second portion of heat; The first airflow can enter the second airflow duct at least partially through the airflow port, and then be discharged after merging with the second airflow.

[0007] In some embodiments, the handheld beauty device further includes an air guide, at least a portion of which is located within the first airflow duct and at the front end of the airflow port. When the first airflow reaches the air guide, it is blocked, and at least a portion of the first airflow is driven through the airflow port into the second airflow duct.

[0008] In some embodiments, the handheld beauty device further includes a flow deflector having an inner wall that defines at least a portion of the first airflow channel.

[0009] In some embodiments, the airflow port is located on the air deflector.

[0010] In some embodiments, the air guide is formed at the front end of the air deflector.

[0011] In some embodiments, the air guide is integrally disposed with the air guide cover, and the air guide is arranged downstream of the air guide cover along the flow direction of the first airflow.

[0012] In some embodiments, the handheld beauty device further includes a circuit board, at least a portion of which forms the first airflow duct with the inner surface wall of the air guide cover. The circuit board is provided with a light-transmitting opening, through which light emitted by the light source passes and is emitted to the outside of the handheld beauty device.

[0013] In some embodiments, along the flow direction of the second airflow, the airflow port has a leading edge and a trailing edge, and the end edge of the heat dissipation fin is at least partially located between the leading edge and the trailing edge.

[0014] In some embodiments, the first airflow duct and the second airflow duct are arranged side by side along the air outlet direction of the fan.

[0015] In some embodiments, the air outlet of the fan is positioned directly opposite the inlet of the first airflow duct and the second airflow duct, and the airflow provided by the fan is split into the first airflow and the second airflow at the air guide shroud.

[0016] In some embodiments, the air guide cover further includes an outer wall opposite to the inner wall, and a heat insulation element is disposed between the heat dissipation fins and the outer wall to block the first portion of heat from being transferred into the second airflow duct.

[0017] The beneficial effects of this utility model are: The handheld beauty device provided by this utility model includes a first airflow duct and a second airflow duct. An airflow port is provided between the first airflow duct and the second airflow duct to connect them. A light source and heat dissipation fins are respectively arranged in the first airflow duct and the second airflow duct. A fan provides a first airflow to exhaust a first portion of the heat in the first airflow duct, and a fan provides a second airflow to exhaust a second portion of the heat in the second airflow duct. Furthermore, through the airflow port, the first airflow in the first airflow duct can be at least partially guided into the second airflow duct to merge with the second airflow before being discharged. This increases the discharge efficiency of the first airflow in the first airflow duct, effectively reduces heat accumulation inside the handheld beauty device, further improves the heat dissipation efficiency of the device, and thus is more conducive to the heat dissipation balance inside the handheld beauty device. Attached Figure Description

[0018] Figure 1 This is a longitudinal sectional view of the handheld beauty device provided in Embodiment 1 of this utility model; Figure 2 yes Figure 1 A magnified schematic diagram of the central part of the structure; Figure 3 This is a cross-sectional structural diagram of a handheld beauty device provided in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the light-transmitting opening structure on the circuit board of the handheld beauty device provided in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the longitudinal section structure of the handheld beauty device provided in Embodiment 1 of this utility model along the direction of the first airflow pipe. Figure 6 This is a schematic diagram of the integrated structure of the air guide cover and air duct in the handheld beauty device provided in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the confluence area structure in the handheld beauty device provided in Embodiment 1 of this utility model; Figure 8 This is a partially enlarged longitudinal section schematic diagram of the handheld beauty device provided in Embodiment 2 of this utility model.

[0019] In the picture: 01. First airflow duct; 02. Second airflow duct; 100. Outer shell; 101. Exhaust vent; 200. Fan; 201. Air outlet; 300. Air guide shroud; 301. Inner wall; 302. Outer wall; 310. Airflow inlet; 311. Leading edge; 312. Trailing edge; 320. Airflow guide component; 330. Rib plate; 400. Light source; 510. Heat dissipation fins; 511. End edge; 520. VC heat spreader; 530. Semiconductor cooling chip; 600. Heat insulation component; 700. Transparent crystal; 701. Contact surface; 800. Circuit board; 801. Light-transmitting opening; 810. Filter; 900. Cover; 901. Convergence area; 910. Front outer edge. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0024] Example 1: This utility model embodiment provides a handheld beauty device, such as... Figures 1-3 As shown, the handheld beauty device includes a housing 100, a light source 400 disposed inside the housing 100, a cooling system for providing refrigerant, and a heat dissipation system for dissipating some of the heat inside the device. The light source 400 provides the light energy required for beauty treatment and generates a first portion of heat, which is then dissipated to the outside of the housing 100 by the heat dissipation system. The cooling system includes a light-transmitting crystal 700, a semiconductor cooling chip 530, a VC heat spreader 520, and heat dissipation fins 510. When the semiconductor cooling chip 530 is energized, it generates refrigerant to transfer to the light-transmitting crystal 700 for cooling. Conversely, it also generates a second portion of heat, which is at least partially conducted to the heat dissipation fins 510 through the VC heat spreader 520 connected to it. The heat dissipation fins 510 are used to conduct and dissipate at least a portion of the second portion of heat.

[0025] Generally speaking, the first part of the heat generated by the light source 400, which needs to release a large amount of energy instantaneously, is often as high as 100 degrees Celsius or more. The second part of the heat generated by the semiconductor cooling chip 530 is much lower than the first part of the heat. This results in a large heat difference between the first and second parts of the heat, which affects the thermal balance inside the beauty device. If the heat dissipation optimization design of the device is not good, it will directly affect its functionality.

[0026] To improve the heat dissipation uniformity inside the handheld beauty device and enhance the heat dissipation effect of the light source 400, the handheld beauty device provided by this utility model further includes a first airflow duct 01, a second airflow duct 02, and a fan 200. The light source 400 is arranged inside the first airflow duct 01; heat dissipation fins 510 are arranged inside the second airflow duct 02; an airflow port 310 is provided between the first airflow duct 01 and the second airflow duct 02 for communication; the fan 200 provides a first airflow to the first airflow duct 01 to exhaust a first portion of heat to the outside of the outer casing 100, and provides a second airflow to the second airflow duct 02 to exhaust a second portion of heat to the outside of the outer casing 100; the first airflow can at least partially enter the second airflow duct 02 through the airflow port 310, and after merging with the second airflow, it is discharged to the outside of the outer casing 100.

[0027] The aforementioned handheld beauty device, by arranging the light source 400 and the heat dissipation fins 510 in the first airflow duct 01 and the second airflow duct 02 respectively, and connecting the first airflow duct 01 and the second airflow duct 02 by setting an airflow port 310, allows the first airflow in the first airflow duct 01 to be at least partially guided into the second airflow duct 02 and discharged after merging with the second airflow. This increases the discharge efficiency of the first airflow in the first airflow duct 01, improves the heat dissipation efficiency of the light source 400, and facilitates balanced heat dissipation inside the handheld beauty device. Furthermore, the high heat generated instantaneously by the light source 400 can be partially introduced into the second airflow duct 02 along with the first airflow through the airflow port 310. Compared with the prior art where the light source 400 and the heat dissipation fins 510 are dissipated separately, the airflow port 310 of this invention facilitates the rapid discharge of hot airflow in the first airflow duct 01, improving the heat dissipation effect on the light source 400. It should be noted that, due to the uneven distribution of heat between the first and second parts, a heat insulation component 600 is installed between the first airflow duct 01 and the second airflow duct 02 to prevent heat transfer and thus affect the heat dissipation effect. Therefore, the airflow port 310 is generally located at the end of the first airflow duct 01 and the second airflow duct 02 facing the exhaust port 101 and is set as close as possible to the exhaust port 101. After the first airflow enters the second airflow duct 02, it will converge in the confluence area 901 between the heat dissipation fins 510 and the exhaust port 101, and then be discharged from the exhaust port 101, which is more conducive to the unidirectional entry and exit of the first airflow.

[0028] In some embodiments, the handheld beauty device further includes an air guide 320, at least a portion of which is located within the first airflow duct 01 and at the front end of the airflow port 310. When the first airflow reaches the air guide 320, a high-pressure zone is formed due to increased wind resistance, thereby forcing at least a portion of the first airflow to enter the second airflow duct 02 through the airflow port 310.

[0029] like Figure 2 The front end of the casing 100 of the handheld beauty device is provided with an exhaust port 101. The first airflow duct 01 and the second airflow duct 02 are both positioned directly opposite the exhaust port 101 to form a straight airflow arrangement. The outlet ends of both the first airflow duct 01 and the second airflow duct 02 are close to the exhaust port 101. This design ensures that the hot airflow inside the device can be discharged via the fastest and shortest path, thereby improving heat dissipation efficiency. An air guide 320 is located between the exhaust port 101 and the outlet end of the first airflow duct 01, or at the outlet end of the first airflow duct 1. Part of the first airflow passes through the outlet end and is discharged from the exhaust port 101. The airflow port 310 is located at the front end of the edge of the heat dissipation fin 510 facing the exhaust port 101. That is, after part of the first airflow enters the second airflow duct 02 through the airflow port 310, it merges with the second airflow in the area between the heat dissipation fin 510 and the exhaust port 101. After merging, it is quickly discharged from the exhaust port 101, avoiding unpredictable heat transfer between the high-heat first airflow and the heat dissipation fin 510, thereby affecting the heat dissipation performance of the heat dissipation fin 510. Along the outlet direction of the fan 200, the first airflow, while flowing within the first airflow duct 01, expels a portion of the heat generated by the light source 400. At the outlet end of the first airflow duct 01, the first airflow is blocked by the air guide 320, causing a local increase in air pressure. At the airflow inlet 310, the pressure of the first airflow is greater than that of the second airflow. At least a portion of the first airflow enters the second airflow duct 02 through the airflow inlet 310. This portion of the first airflow merges with the second airflow and then discharges heat to the exhaust port 101 through the outlet end of the second airflow duct 02. Simultaneously, the remaining portion of the first airflow, under the action of the air guide 320, is guided along the inner surface of the air guide 320 to the exhaust port 101, thereby discharging to the outside of the outer casing 100. Since the light source 400 is located inside the first airflow duct 01, the air guide 320 also has the function of blocking the light emitted by the light source 400, reducing the medical safety risks caused by excessive light leakage from the exhaust vent 101, improving the safety of using the handheld beauty device, and the less light leakage also brings a better user experience.

[0030] In some embodiments, the handheld beauty device also includes a flow deflector 300, which includes an inner wall 301 that defines at least a portion of a first airflow duct 01.

[0031] like Figure 2 As shown, the inner wall 301 of the air guide shroud 300 faces the first airflow duct 01 and forms at least a part of the first airflow duct 01. In this embodiment, the three adjacent inner walls 301 of the air guide shroud 300 define at least three directions of the first airflow duct 01, meaning that when the first airflow passes through the first airflow duct 01, it can flow along the inner wall 301 of the air guide shroud 300. Figure 2 The inner wall 301 of the air guide 300 has an extension length along the flow direction of the first air flow, and the end of the air guide 300 facing the fan 200 is flared outward, which facilitates the entry of the first air flow into the first air flow duct 01. At least part of the first air flow flows along the gap between the inner wall 301 of the air guide 300 and the light source 400. During the flow, the first air flow diffuses and splits around the surface of the light source 400, which improves the heat dissipation effect on the light source 400.

[0032] In some embodiments, the airflow port 310 is formed on the airflow deflector 300.

[0033] Combination Figure 2 , Figure 3 and Figure 6 As shown, when the air guide shroud 300 is located between the light source 400 and the heat dissipation fins 510, the inner surface wall 301 of the air guide shroud 300 defines a first airflow duct 01. At the same time, the outer surface wall 302 of the air guide shroud 300, which is opposite to the inner surface wall 301, defines at least a portion of a second airflow duct 02. The air guide shroud 300 achieves isolation between the first airflow duct 01 and the second airflow duct 02. Through this airflow duct separation method, thermal isolation between the light source 400 and the heat dissipation fins 510 is achieved, effectively improving the heat dissipation balance inside the handheld beauty device. Meanwhile, the airflow port 310 can be opened on one end of the air guide shroud 300 facing the exhaust port 101. The airflow port 310 connects the inner surface wall 301 and the outer surface wall 302 of the air guide shroud 300, thereby achieving unidirectional conduction of the first airflow and the second airflow, increasing the heat dissipation effect on the light source 400. The shape of the airflow port 310 is not limited; it can be circular, triangular, rectangular, polygonal, or any combination thereof. The axis of the airflow port 310 can be perpendicular to the inner surface wall 301 or the outer surface wall 302, or it can be set at a certain angle to the inner surface wall 301 or the outer surface wall 302. The specific setting can be reasonably determined according to the flow rate of the first airflow to be guided. In some embodiments, the air guide 320 is formed at the front end of the guide shroud 300.

[0034] like Figure 6As shown, the air guide 320 and the air deflector 300 are an integral structure and can be integrally molded by injection molding. The air guide 320 is a curved structure located at the front end of the air deflector 300. At this time, the air outlet 310 is located between the end of the air guide 320 and the air deflector 300. The air guide 320 and the air deflector 300 are connected by multiple stiffeners 330. The gaps between the stiffeners 330 form multiple shaped air outlets 310. When the first airflow reaches the air guide 320, as... Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, a portion of the first airflow is guided and discharged along the curved surfaces on both sides of the air guide 320, while another portion of the first airflow, due to obstruction, enters the second airflow duct 02 and merges with the second airflow before being discharged. By setting the number and size of the airflow ports 310, adaptive control of the flow rate of the first airflow entering the second airflow duct 02 can be achieved. The air guide shroud 300 and the air guide 320 are designed as an integrated structure, which facilitates installation and positioning and improves the assembly efficiency of the handheld beauty device.

[0035] In some embodiments, the handheld beauty device also includes a housing 900, the inner wall of which defines at least a portion of a second airflow duct 02, and has a front end outer edge 910 near the front end of the exhaust port 101.

[0036] like Figure 2 and Figure 7 As shown, the heat dissipation fins 510 are disposed inside the second airflow duct 02, and a confluence region 901 is formed between the end edge 511 and the front outer edge 910 of the heat dissipation fins 510, allowing the first airflow and the second airflow to converge. Furthermore, the airflow port 310 is opened inside the confluence region 901 to ensure that the first airflow can converge into the confluence region 901.

[0037] In some embodiments, the handheld beauty device further includes a circuit board 800, at least a portion of the circuit board 800 and the inner surface wall 301 of the flow guide 300 form a first airflow duct 01, and the circuit board 800 is provided with a light-transmitting opening 801, through which light emitted by the light source 400 is emitted to the outside of the handheld beauty device.

[0038] like Figure 2-4As shown, the circuit board 800 is used to mount and fix the light source 400 and to supply power to the light source 400. The light source 400 is located inside the first air flow duct 01. The circuit board 800 and the air guide 300 surround and form the first air flow duct 01. A light-transmitting opening 801 is provided on the circuit board 800. By providing the light-transmitting opening 801 on the circuit board 800, the light emitted by the light source 400 can be emitted through the light-transmitting opening 801. Generally, the light source 400 can be a xenon lamp. In order to obtain light of a specific wavelength, a filter 810 can be used to filter the light. Specifically, the light-transmitting opening 801 on the circuit board 800 can be used to install the filter 810. The light emitted by the light source 400 passes through the filter 810 and shines on the light-transmitting crystal 700. Generally, the light-transmitting crystal 700 can be sapphire. At the same time, the light-transmitting crystal 700 is connected to the semiconductor cooling chip 530 and transfers the coolant to the user's skin surface through the exposed contact surface 701 to achieve a cooling or cooling effect on the skin, thereby effectively improving the user experience. The light source 400 and the circuit board 800 can be arranged along the length of the housing 100. Both ends of the first airflow duct 01 can directly guide the air outlet 201 of the fan 200 and the exhaust port 101 on the housing 400, achieving direct exhaust of the first airflow. That is, the air outlet direction of the fan 200, the flow direction of the first airflow, and the exhaust direction of the exhaust port 101 are consistent, shortening the exhaust path of the first airflow, facilitating its rapid discharge, and improving heat dissipation. It can be understood that since at least a portion of the circuit board 800 forms the first airflow duct 01, the first airflow flowing within the first airflow duct 01 also has a heat dissipation and cooling effect on the circuit board 800.

[0039] In some embodiments, the first airflow duct 01 and the second airflow duct 02 are arranged side by side along the air outlet direction of the fan 200.

[0040] See Figure 2 The first airflow duct 01 and the second airflow duct 02 are arranged approximately parallel to the air outlet direction of the fan 200, ensuring that the flow directions of the first and second airflows are consistent with the air outlet direction of the fan 200, and can be directly discharged through the exhaust port 101, greatly shortening the flow path of the first and second airflows, thus facilitating rapid heat dissipation. Furthermore, the arrangement direction of the light source 400 is perpendicular to its light emission direction, meaning the arrangement direction of the light source 400 is perpendicular to the light outlet direction. Since the light source 400 irradiates outwards through the light-transmitting opening 801, this layout not only achieves simultaneous heat dissipation for the light source 400 and the circuit board 800, but also optimizes the overall light emission form of the device more rationally through the light-transmitting opening 801 on the circuit board 800. A filter 810 is installed at the light-transmitting opening 801, thus providing a more optimized spatial layout solution. It can be understood that, with... Figure 2From this perspective, the circuit board 800, positioned below the light source 400 and with a light-transmitting opening 801, can provide a more efficient heat dissipation method and a more reasonable spatial layout, further enabling device miniaturization while also improving heat dissipation efficiency.

[0041] In some embodiments, the air outlet 201 of the fan 200 is positioned directly opposite the inlet end of the first airflow duct 01 and the second airflow duct 02, and the airflow provided by the fan 200 is split into the first airflow and the second airflow at the guide shroud 300.

[0042] like Figure 2 , Figure 5 and Figure 6 The end of the air guide shroud 300 facing the fan 200 is flared, and the air outlet 201 of the fan 200 is simultaneously aligned with the inlet of the first airflow duct 01 and the second airflow duct 02. Therefore, one fan 200 can simultaneously provide the first and second airflows. The outward-flaring end configuration, through its upward-pointing flared mouth, further enhances the airflow introduced into the fan 200, thereby increasing the airflow and improving the heat dissipation effect within the limited design space of the first airflow duct 01. The simultaneous output of airflow from one fan 200 to the first airflow duct 01 and the second airflow duct 02 ensures that the air pressure within the first and second airflow ducts remains relatively consistent, i.e., the flow velocities are similar. Based on this, when the first airflow encounters the air guide 320, it can enter the second airflow duct 02 along the airflow inlet 310 after the air pressure increases, achieving unidirectional flow of the first airflow at the airflow inlet 310.

[0043] Example 2: Compared with the handheld beauty device provided in Embodiment 1, the handheld beauty device provided in Embodiment 2 differs in that: along the flow direction of the second airflow, the airflow port 310 has a leading edge 311 and a trailing edge 312, and the end edge 511 of the heat dissipation fins 510 is at least partially located between the leading edge 311 and the trailing edge 312. The remaining unmentioned parts are the same as in Embodiment 1.

[0044] like Figure 2 , Figure 3 and Figure 5As shown, typically, a heat insulation component 600 is provided between the heat dissipation fins 510 and the light source 400 for thermal isolation. As a crucial heat dissipation component in handheld beauty devices, the heat dissipation fins 510 need to prevent the first portion of heat generated by the light source 400 from being conducted to the heat dissipation fins 510, thereby avoiding a decrease in the heat dissipation efficiency of the second portion of heat due to high temperatures. Therefore, the heat insulation component 600 effectively reduces the possibility of such unintended heat conduction, ensuring the heat dissipation balance of the two heat dissipation channels. Furthermore, the second airflow duct 02, where the heat dissipation fins 510 are located, is positioned directly opposite the center of the exhaust port 101, effectively ensuring the rapid exhaust of the second airflow and further reducing the impact of heat conduction on the heat dissipation balance. If the heat generated by the instantaneous current of the light source 400 is not dissipated in time, it will cause localized heat accumulation inside the casing 100. Uneven heat distribution will also affect the normal use of the handheld beauty device. Therefore, to ensure that the high heat generated in the first airflow duct 01 can be dissipated in time, the airflow port 310 has a leading edge 311 and a trailing edge 312 along the flow direction of the second airflow. The end edge 511 of the heat dissipation fins 510 is at least partially located between the leading edge 311 and the trailing edge 312. When the first airflow passes through the airflow port 310, it will come into contact with a portion of the heat dissipation fins 510 for heat exchange before merging with the second airflow and being discharged. Figure 8 Compared to Embodiment 1, the size of the airflow port 310 along the flow direction of the first airflow can be increased to the maximum extent. This facilitates the efficient entry of the first airflow into the second airflow duct 02 through the airflow port 310, and allows the airflow to be discharged after merging with the second airflow in the area between the heat dissipation fins 510 and the exhaust port 101. This increases the heat dissipation effect on the light source 400, avoids the accumulation of localized high heat, and promotes balanced heat dissipation within the housing 100 of the handheld beauty device. Furthermore, the inward extension of the trailing edge 312 of the airflow port 310 is controllable, so the flow of some of the first portion of heat through the heat dissipation fins 510 does not have a substantial negative impact on the heat dissipation performance of the heat dissipation fins 510 themselves.

[0045] Example 3: Compared with the handheld beauty device provided in Embodiment 1 or Embodiment 2, the handheld beauty device provided in Embodiment 3 differs in that: the air guide 320 and the air guide cover 300 are integrally formed, and the air guide 320 is arranged downstream of the air guide cover 300 along the flow direction of the first airflow. All other features are the same as in Embodiment 1 or Embodiment 2.

[0046] The air intake component 320 and the air guide shroud 300 can be integrally molded using an injection molding process. The resulting integral component is then... Figure 6The stiffeners 330 shown are connected, and an air vent 310 is formed between two adjacent stiffeners 330. The integrally formed structure facilitates quick internal assembly. At the same time, the connection between the two through the stiffeners 330 can be in various forms, thus facilitating various shapes of the air vent 310. The shape of the air vent 310 is not limited and can be circular, triangular, rectangular, polygonal or any combination thereof.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A handheld beauty device, comprising a light source, a cooling system, and heat dissipation fins, wherein the light source provides light energy and generates a first portion of heat; the cooling system cools the handheld beauty device and generates a second portion of heat; and the heat dissipation fins conduct and dissipate at least a portion of the second portion of heat; characterized in that, The handheld beauty device also includes: A first airflow duct, wherein the light source is arranged inside the first airflow duct; The second airflow duct, wherein the heat dissipation fins are arranged inside the second airflow duct; An airflow port is provided between and connects the first airflow pipe and the second airflow pipe. A fan provides a first airflow to the first airflow duct to dissipate the first portion of heat, and the fan provides a second airflow to the second airflow duct to dissipate the second portion of heat; The first airflow can enter the second airflow duct at least partially through the airflow port, and then be discharged after merging with the second airflow.

2. The handheld beauty device according to claim 1, characterized in that, It also includes an air guide, at least a portion of which is located within the first airflow duct and at the front end of the airflow port; when the first airflow reaches the air guide, it is blocked, and at least a portion of the first airflow is driven through the airflow port into the second airflow duct.

3. The handheld beauty device according to claim 2, characterized in that, It also includes a deflector, the deflector having an inner surface wall that defines at least a portion of the first airflow duct.

4. The handheld beauty device according to claim 3, characterized in that, The airflow inlet is located on the air guide cover.

5. The handheld beauty device according to claim 3 or 4, characterized in that, The air intake element is formed at the front end of the air intake shroud.

6. The handheld beauty device according to claim 3 or 4, characterized in that, The air guide is integrally formed with the air guide cover, and the air guide is arranged downstream of the air guide cover along the flow direction of the first air flow.

7. The handheld beauty device according to claim 3, characterized in that, It also includes a circuit board, at least a portion of which forms the first airflow duct with the inner surface of the air guide cover. The circuit board has a light-transmitting opening, through which the light emitted by the light source is emitted to the outside of the handheld beauty device.

8. The handheld beauty device according to claim 1, characterized in that, Along the flow direction of the second airflow, the airflow port has a leading edge and a trailing edge, and the end edge of the heat dissipation fin is at least partially located between the leading edge and the trailing edge.

9. The handheld beauty device according to claim 1, characterized in that, The first airflow duct and the second airflow duct are arranged side by side along the air outlet direction of the fan.

10. The handheld beauty device according to claim 3, characterized in that, The air outlet of the fan is positioned directly opposite the inlet of the first airflow duct and the second airflow duct. The airflow provided by the fan is split into the first airflow and the second airflow at the air guide shroud.

11. The handheld beauty device according to claim 3, characterized in that, The air guide cover also includes an outer wall opposite to the inner wall, and a heat insulation element is provided between the heat dissipation fins and the outer wall to block the first part of the heat from being transferred into the second airflow duct.

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