Handheld beauty devices

Abstract

This utility model belongs to the field of beauty product technology and discloses a handheld beauty device, including a shell, a light source, a circuit board, a first airflow duct, and a fan. The light source provides the light energy required for beauty treatment. The light source is electrically connected to the circuit board, which has a bearing area to bear the heat generated by the current when the light source is working. The first airflow duct is connected to an exhaust port, and the bearing area is at least partially located inside the first airflow duct. Under the action of the airflow provided by the fan, the heat in the bearing area can flow from the first airflow duct to the exhaust port and be discharged to the outside of the shell. This utility model achieves heat dissipation of the bearing area on the circuit board, thereby improving the heat bearing capacity and heat dissipation capacity of the circuit board, effectively improving the internal thermal balance of the device, and playing a more positive role in the miniaturization design of handheld beauty devices, thus improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of beauty product 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. Most commonly, they use light of specific wavelengths 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] In existing technologies, such beauty devices require the instantaneous release of a large amount of energy from a light source to reach the skin tissue. The circuit board used to control the light source and other internal components often does not generate much heat and is therefore neglected in the design as a primary heat dissipation target. This approach is acceptable for devices with low internal space complexity. However, as devices gradually evolve towards smaller designs, especially after differentiated structural adjustments are made to the circuit board itself, this unoptimized heat dissipation method of the circuit board will gradually become apparent in its impact on the internal thermal balance of the device. Utility Model Content

[0004] The purpose of this invention is to provide a handheld beauty device to solve the problem of poor heat balance in beauty devices.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A handheld beauty device includes a housing with an exhaust vent, and further includes components disposed within the housing:

[0007] Light source, used to provide the light energy needed for beauty treatments;

[0008] A circuit board, the light source is electrically connected to the circuit board, and the circuit board is provided with a bearing area, which is used to bear the heat generated by the current when the light source is in operation;

[0009] A first airflow duct is connected to the exhaust port, and the bearing area is at least partially located within the first airflow duct.

[0010] A fan, which is capable of supplying airflow to the first airflow duct;

[0011] The heat in the bearing area can flow from the first airflow duct to the exhaust port and be discharged to the outside of the housing through the airflow.

[0012] In some embodiments, the circuit board has an opening, the housing has a light outlet facing the opening, the light source is arranged on the side of the circuit board away from the light outlet and facing the opening, and the light emitted by the light source can pass through the opening and the light outlet in sequence and be emitted to the outside of the housing.

[0013] In some embodiments, the first airflow duct extends toward the exhaust port along the airflow direction and is consistent with the exhaust direction of the exhaust port.

[0014] In some embodiments, the light source is a xenon lamp, and the two ends of the xenon lamp are electrically connected to the circuit board via conductive brackets.

[0015] In some embodiments, at least a portion of the bearing region is formed between the inner edge of the opening and the outer edge of the circuit substrate along the width direction of the circuit substrate.

[0016] In some embodiments, a flow deflector is also included, the flow deflector including a first inner wall that defines at least a portion of a first airflow duct.

[0017] In some embodiments, the shroud further includes a second inner wall defining at least a portion of a second airflow duct, the light source being located within the second airflow duct.

[0018] In some embodiments, the air deflector further includes an outer outer wall opposite to the first inner surface wall, the outer outer wall defining at least a portion of a third airflow duct, the third airflow duct having a heat dissipation component disposed therein.

[0019] In some embodiments, the handheld beauty device further includes a cooling system, which includes a light-transmitting crystal, a semiconductor cooling chip, a VC heat spreader, and the heat sink. The cold end of the semiconductor cooling chip can conduct refrigerant cooling to the light-transmitting crystal, and its hot end can conduct heat to the heat sink through the VC heat spreader.

[0020] In some embodiments, the heat sink is a heat sink fin.

[0021] In some embodiments, a heat insulation element is provided on the outer wall to block the light source from transferring at least part of the heat to the heat sink.

[0022] In some embodiments, the heat insulation element is an aerogel heat insulation sheet.

[0023] The beneficial effects of this utility model are:

[0024] The handheld beauty device provided by this utility model has a light source mounted on and electrically connected to a circuit board. A bearing area is provided on the circuit board to bear the heat generated by the current when the light source is in operation. In order to dissipate this heat, this utility model is provided with a first air flow duct. An air flow is provided into the first air flow duct by a fan. Under the action of the air flow, the heat in the bearing area flows with the air flow from the first air flow duct to the exhaust port and is discharged to the outside of the shell. This achieves heat dissipation of at least part of the bearing area on the circuit board, thereby improving the heat bearing capacity and heat dissipation capacity of the circuit board, effectively improving the internal thermal balance of the device, and playing a more positive role in the miniaturization design of beauty devices, thereby improving the user experience. Attached Figure Description

[0025] Figure 1 This is a side sectional view of the handheld beauty device provided by this utility model in the holding state;

[0026] Figure 2 This is a partially enlarged side sectional view of the handheld beauty device provided by this utility model;

[0027] Figure 3 This is a cross-sectional view of the handheld beauty device provided by this utility model;

[0028] Figure 4 This is a schematic diagram of the assembly of the light source and the circuit board in the handheld beauty device provided by this utility model.

[0029] Figure 5 This is a schematic diagram showing the positional relationship between the light source and the circuit board in the handheld beauty device provided by this utility model;

[0030] Figure 6 This is a schematic diagram of the airflow shield structure in the handheld beauty device provided by this utility model from a top-down perspective;

[0031] Figure 7 This is a schematic diagram of the air guide structure of the handheld beauty device provided by this utility model from an upward viewing angle;

[0032] Figure 8 This is an assembly diagram of the fan, air guide, housing, and circuit board in the handheld beauty device provided by this utility model.

[0033] In the picture:

[0034] 01. First airflow duct; 02. Second airflow duct; 03. Third airflow duct;

[0035] 100. Housing; 101. Exhaust vent;

[0036] 200. Fan; 201. Air outlet;

[0037] 300. Shielding; 311. First inner wall; 312. Outer wall; 313. Second inner wall;

[0038] 400. Light source;

[0039] 510. Heat sink; 520. Vapor chamber; 530. Semiconductor cooling chip; 531. Cold end; 532. Hot end;

[0040] 600. Thermal insulation components;

[0041] 700, Transparent crystal; 701, Light-emitting surface; 702, Light-receiving surface;

[0042] 800, Circuit board; 801, Opening; 810, Bearing area; 811, Inner edge; 812, Outer edge; 820, Conductive support; 830, Filter. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] This utility model embodiment provides a handheld beauty device, such as... Figures 1-3 As shown, the handheld beauty device includes a housing 100, and the housing 100 is provided with an exhaust port 101 for dissipating heat from inside the housing 100. Taking a hair removal device as an example, the handheld beauty device provided in this embodiment also includes a light source 400, a circuit board 800, a first airflow duct 01, and a fan 200 disposed within the housing 100. The light source 400 is used to provide the light energy required for beauty treatment. The light source 400 is electrically connected to the circuit board 800. The circuit board 800 is provided with a bearing area 810, which is used to bear the heat generated by the current when the light source 400 is in operation. The bearing area 810 is at least partially located within the first airflow duct 01, which is connected to the exhaust port 101. The fan 200 can provide airflow to the end of the first airflow duct 01 away from the exhaust port 101. Under the action of the airflow, the heat of the bearing area 810 flows from the first airflow duct 01 to the exhaust port 101 and is discharged to the outside of the housing 100, thereby achieving heat dissipation of the bearing area 810.

[0048] like Figures 1-5 As shown, the circuit board 800 is disposed inside the housing 100, and the light source 400 is fixed on the circuit board 800 by a conductive bracket 820. The light source 400 is electrically connected to the circuit board 800. By providing a bearing area 810 on the circuit board 800, it can be used to bear the heat generated by the current when the light source 400 is in operation. In order to dissipate this heat in a timely manner, in this embodiment, the bearing area 810 is disposed in the first air flow duct 01. Air flow is provided into the first air flow duct 01 through the air outlet 201 of the fan 200. Under the action of the air flow, the heat of the bearing area 810 is discharged from one end of the first air flow duct 01 with the air flow and then discharged to the outside of the housing 100 through the exhaust port 101. This achieves heat dissipation of at least the bearing area 810 on the circuit board 800, thereby improving the heat bearing capacity and heat dissipation capacity of the circuit board 800, which is beneficial to the miniaturization design of the handheld beauty device.

[0049] In some embodiments, the circuit board 800 has an opening 801, the housing 100 has a light outlet facing the opening 801, and the light source 400 is arranged on the side of the circuit board 800 away from the light outlet and facing the opening 801. The light emitted by the light source 400 can be emitted to the outside of the housing 100 through the opening 801 and the light outlet in sequence.

[0050] like Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the light source 400 is a long, strip-shaped gas-excited light source. An opening 801 extends along the length of the light source 400, and its width is greater than the width of the light source 400. A light-transmitting crystal 700 can be installed at the light outlet, having an incident surface 702 and an exit surface 701. Light emitted from the light source 400 can pass through the opening 801 and exit onto the incident surface 702 of the light-transmitting crystal 700, and then illuminate the outside of the housing 100 through the exit surface 701 for hair removal and beauty purposes. In an optional design, the size of the opening 801 should prevent the light energy from the light source 400 from causing heat radiation to the circuit board 800. By opening 801 on the circuit board 800, a novel internal layout scheme for the beauty device is provided. This changes the existing design concept of placing the circuit board 800 outside the illumination path of the light source 400. Instead of simply using the circuit board 800 as a carrier for circuit control, it optimizes its integration into the light exit path, providing better space utilization.

[0051] In some embodiments, the first airflow duct 01 extends toward the exhaust port 101 along the airflow direction and is consistent with the exhaust direction of the exhaust port 101.

[0052] like Figure 5 As shown, in this embodiment, along the length of the housing 100, the exhaust port 101 is located at the front end of the housing 100, and the light-emitting side of the housing 100 is located at the lower end face of the housing 100. By providing an opening 801 on the circuit board 800, the light source 400 can be arranged on the circuit board 800 along the length of the housing 100, and the exhaust port 101 can be located at the front end of the housing 100. The airflow provided by the fan 200 does not change direction during the process of being discharged from the first airflow pipe 01 to the exhaust port 101, which reduces the airflow resistance, shortens the airflow path, facilitates the rapid discharge of airflow, and thus improves the heat dissipation efficiency.

[0053] In some embodiments, the light source 400 is a xenon lamp, and both ends of the xenon lamp are electrically connected to the circuit board 800 through conductive brackets 820. As shown in Figure 4, by providing conductive brackets 820, a certain gap can be maintained between the xenon lamp and the plane of the circuit board 800 after installation.

[0054] In some embodiments, at least a portion of a bearing region 810 is formed between the inner edge 811 of the opening 801 and the outer edge 812 of the circuit board 800 along the width direction of the circuit board 800.

[0055] like Figures 4-5 As shown, the support area 810 is arranged along the width direction of the circuit board 800, located on one side of the opening 801, and has an extension length along the length direction of the opening 801. The support area 810 is part of the width direction of the circuit board 800. In the plane of the circuit board 800, the width of the light source 400 is smaller than the width of the circuit board 800. Other electronic components of the handheld beauty device are also provided in the length direction of the circuit board 800. Therefore, there is a certain installation gap between one or both sides of the circuit board 800 and the housing 100. By utilizing this installation gap, the support area 810 is set on the circuit board 800, making full use of the space layout inside the housing 100. By setting the support area 810 on one side of the opening 801, it is convenient for the fan 200 to simultaneously provide airflow to the first airflow duct 01 and the light source 400, and it is also convenient for the rapid exhaust of airflow, improving heat dissipation efficiency.

[0056] like Figures 2-4 , Figure 5 As shown, the carrying area 810 is arranged along the width direction of the circuit board 800 and is located on one side of the opening 801. The carrying area 810 and the opening 801 extend in the same direction. Taking a xenon lamp as an example, when the light source 400 uses a xenon lamp, a high current is needed to excite the xenon lamp to release a large amount of light energy instantaneously. Therefore, the circuit board 800 needs to reserve a portion of its area to carry the high current between the power paths at both ends of the xenon lamp, and heat will be generated along these paths. Due to the opening 801, the area of ​​the carrying area 810 that can effectively carry the current is significantly reduced, and heat will accumulate significantly. Therefore, a separate airflow channel is needed to dissipate heat and cool it down. At the same time, the design of the opening 801 provides a new internal space optimization solution for this type of handheld beauty device. Specifically, a filter 830 can be installed at the opening 801, and the filter 830 is completely arranged within the opening 801. In terms of space optimization, the light path will pass through the filter 830 and then reach the light outlet. Since this design places the filter 830 within the opening 801, it can save the thickness space of the filter 830 in the direction of the light path, thus bringing more beneficial effects to the miniaturization of the device.

[0057] In some embodiments, the handheld beauty device further includes a flow guide 300, which includes a second inner wall 313 defining at least a portion of a second airflow duct 02, within which a light source 400 is located.

[0058] See Figures 2-3 As shown, the second inner wall 313 of the air guide 300 faces the circuit board 800 and is located above the opening 801. The second inner wall 313 has an extension length along the air outlet direction of the fan 200. Thus, the air guide 300 defines a second airflow duct 02. The fan 200 provides airflow to the second airflow duct 02 to quickly dissipate the heat generated by the light source 400.

[0059] In some embodiments, the air deflector 300 further includes an outer wall 312 facing away from the first inner wall 311, the outer wall 312 defining at least a portion of the third airflow duct 03; the handheld beauty device also includes a heat sink 510 disposed within the third airflow duct 03.

[0060] In the prior art, since the circuit board 800 has no opening 801 and is generally arranged in a region different from the emission path of the light source 400, this arrangement cannot optimize and take into account the heat dissipation of the circuit board 800. Furthermore, the circuit board 800 in the prior art does not need to consider the heating problem caused by the reduction of the effective area of ​​the circuit board 800 for high current load. Therefore, the circuit board 800 is simply arranged in the margin space within the equipment that meets the engineering design. In other words, those skilled in the art do not consider targeted heat dissipation optimization for the circuit board 800. Because an opening 801 is provided on the circuit board 800 in this application, the bearing area 810 located in the first airflow duct 01 has obvious heat abnormalities. In this embodiment, by optimizing the position layout of the heat sink 510, the light source 400 and the opening 801, the first airflow duct 01, the second airflow duct 02 and the third airflow duct 03 are kept in the same parallel airflow direction. This not only facilitates the simultaneous provision of airflow to the fan 200's air outlet 201, but also ensures that the three airflow ducts have the shortest heat dissipation path, achieving the best heat dissipation effect. At the same time, it also more reasonably optimizes the layout between independent air ducts, ensuring that the device has a more balanced thermal uniformity and a more compact design space, further improving the user experience.

[0061] In some embodiments, the shroud 300 further includes a first inner wall 311 that defines at least a portion of a first airflow duct 01, and a carrying area 810 located within the first airflow duct 01.

[0062] For example Figure 3 , Figures 5-7As shown, the air guide shroud 300 has a first inner wall 311 on the side facing the circuit board 800 and above the support area 810. The first inner wall 311 defines a first airflow duct 01, providing airflow into the first airflow duct 01, which can dissipate heat from the support area 810. The first airflow duct 01, the second airflow duct 02, and the third airflow duct 03 are all arranged side-by-side between the air outlet 201 and the exhaust outlet 101 of the fan 200. The airflow path is short, the distance is small, and the discharge speed is fast, achieving independent heat dissipation for the support area 810, the light source 400, and the heat sink 510. This facilitates temperature uniformity within the housing 100 and prevents heat accumulation.

[0063] In some embodiments, a heat insulation element 600 is provided in the heat radiation path of the light source 400. The heat insulation element 600 can be an aerogel heat insulation sheet. Generally, the area of ​​the light source 400 will release heat up to hundreds of degrees Celsius. This heat is transferred to the heat sink 510 through heat conduction, which will greatly affect the heat dissipation effect of the heat sink 510. Taking a copper heat sink 510 as an example, where the device transfers heat from the thermoelectric cooler 530 to the heat sink fins via a VC heat spreader 520, the cold end 531 of the thermoelectric cooler 530 outputs refrigerant to the transparent crystal 700, while the hot end 532 outputs corresponding heat to the heat sink 510 via the VC heat spreader 520. The highest temperature along the entire heat transfer path might only be 60 degrees Celsius, while the temperature conducted from the light source 400 to the heat sink fins below via the diffuser 300 could reach 100 degrees Celsius or even higher. This would cause the capillary structure in the VC heat spreader 520 to transfer even higher temperatures back towards the thermoelectric cooler 530, severely affecting the normal operation of the cooling system. Therefore, effective thermal isolation between the light source 400 and the heat sink 510 via a thermal insulation element 600 is necessary. The thermal insulation element 600 is an aerogel thermal insulation sheet. Figure 3 and Figure 6 As shown, the heat insulation component 600 is installed on the outer wall 312 of the flow guide shroud 300 for easy operation.

[0064] 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 hand-held cosmetic device comprising a housing provided with an air outlet, characterized in that, The handheld beauty device also includes a component disposed within the housing: Light source, used to provide the light energy needed for beauty treatments; A circuit board, the light source is electrically connected to the circuit board, and the circuit board is provided with a bearing area, which is used to bear the heat generated by the current when the light source is in operation; A first airflow duct is connected to the exhaust port, and the bearing area is at least partially located within the first airflow duct. A fan, which is capable of supplying airflow to the first airflow duct; The heat in the bearing area can flow from the first airflow duct to the exhaust port and be discharged to the outside of the housing through the airflow.

2. The handheld cosmetic device of claim 1, wherein, An opening is provided on the circuit board, and a light outlet is provided on the housing facing the opening. The light source is arranged on the side of the circuit board away from the light outlet and facing the opening. The light emitted by the light source can pass through the opening and the light outlet in sequence and be emitted to the outside of the housing.

3. The handheld cosmetic device of claim 2, wherein, The first airflow duct extends toward the exhaust port along the airflow direction and is consistent with the exhaust direction of the exhaust port.

4. The handheld cosmetic device of claim 2, wherein, The light source is a xenon lamp, and the two ends of the xenon lamp are electrically connected to the circuit board through conductive brackets.

5. The handheld cosmetic device according to claim 2 or 4, characterized in that, Along the width direction of the circuit board, at least a portion of the bearing area is formed between the inner edge of the opening and the outer edge of the circuit board.

6. The handheld beauty device according to claim 1 or 2, characterized in that, It also includes a deflector, the deflector having a first inner wall that defines at least a portion of a first airflow duct.

7. The handheld beauty device according to claim 6, characterized in that, The air deflector also includes a second inner wall that defines at least a portion of a second airflow duct, and the light source is located within the second airflow duct.

8. The handheld beauty device according to claim 7, characterized in that, The air deflector also includes an outer outer wall that is opposite to the first inner surface wall, the outer outer wall defining at least a portion of a third airflow duct, the third airflow duct having a heat dissipation component disposed therein.

9. The handheld beauty device according to claim 8, characterized in that, The handheld beauty device also includes a cooling system, which includes a light-transmitting crystal, a semiconductor cooling chip, a VC heat spreader, and the heat sink. The cold end of the semiconductor cooling chip can conduct refrigerant cooling to the light-transmitting crystal, and its hot end can conduct heat to the heat sink through the VC heat spreader.

10. The handheld beauty device according to claim 8 or 9, characterized in that, The heat dissipation component is a heat dissipation fin.

11. The handheld beauty device according to claim 8, characterized in that, A heat insulation element is provided on the outer wall to prevent the light source from transferring at least part of the heat to the heat sink.

12. The handheld beauty device according to claim 11, characterized in that, The heat insulation component is an aerogel heat insulation sheet.

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