Cold compress work cap and laser beauty device

Abstract

This utility model relates to a cooling cap and its laser beauty device. The cooling cap includes a cooling unit, a heat sink, a cold end, and sapphire glass. The cold end includes a cold end bracket and a cap. The cold end bracket has a mounting base connected to the cooling surface of the cooling unit. A window is provided in the middle of the cap. A groove is provided on the inner side of the cap, and a piece of sapphire glass is embedded in the groove, completely covering the window. The laser beauty device includes a laser, a laser beam shaping and homogenizing lens group, and the aforementioned cooling cap. The last element of the laser beam shaping and homogenizing lens group is a focusing lens, and the sapphire glass is provided outside the focusing lens. This utility model replaces existing ordinary protective glass with sapphire glass. Utilizing the high thermal conductivity of sapphire glass, the cooling energy is also introduced into the window area, allowing the entire area to be cooled during laser beauty treatments, thus improving the user experience.

Description

Technical Field

[0001] This utility model relates to a work cap with full-area cold compress function, and a laser beauty device using the work cap, belonging to the field of laser medical beauty. Background Technology

[0002] Laser beauty devices utilize a laser to emit a laser beam, which is then homogenized and shaped by a lens assembly before being focused approximately 1mm below the skin's surface. The heat energy of the laser beam acts on skin cells to achieve corresponding cosmetic effects, such as removing blemishes, rejuvenating the skin, reducing wrinkles, and removing hair. The core principle of laser beauty is still photothermal action; therefore, a burning sensation may occur on the affected area and surrounding skin during the procedure.

[0003] To alleviate discomfort caused by heat during laser beauty treatments, a cooling unit is installed inside the laser beauty device. The cooling energy is then transferred to the working cap, keeping the metal working cap that the laser beauty device is pressed against the skin at a low temperature. This allows for a cooling effect on the skin while the laser beauty treatment is being performed.

[0004] The structure of the aforementioned laser beauty device can be referenced to the handheld home laser beauty device with Chinese Patent Publication No. CN111557731A; the relevant structure involving the cooling unit can be further referenced to the heat dissipation system for the semiconductor cooling chip in the handheld beauty device with Chinese Patent Publication No. CN221598474U, the heat sink assembly based on the VC heat spreader and the handheld beauty device with Chinese Patent Publication No. CN219555511U, the cold head device for the handheld beauty device with Chinese Patent Publication No. CN219207631U, and the heat sink heat dissipation system with embedded copper tubes with Chinese Patent Publication No. CN219087666U.

[0005] However, existing laser beauty device designs typically include a window in the center of the metal cap for the laser beam to pass through. This window is usually covered with protective glass to allow the laser beam to pass through and form a treatment beam, while preventing external debris from entering the device and damaging optical components or other parts. However, glass has poor thermal conductivity, typically around 1 W / (m·K), while the metal cap has a thermal conductivity of up to 20 W / (m·K). This means that the area directly affected by the laser beam (located at the window and glass) cannot receive direct cooling during treatment. Cooling is only achieved by the metal cap in the surrounding area, requiring the device to be moved to bring the cap closer to the treated area to cool the skin. This results in a poor experience for some people with sensitive skin when using handheld laser beauty devices, or the laser treatment process may become discontinuous in the pursuit of cooling.

[0006] In response to the above situation, it is necessary to further improve the structure of the working cap of the laser beauty device so that the entire area can be cooled and treated without leaving any gaps in the cooling process. Utility Model Content

[0007] The purpose of this invention is to provide a cooling cap and its laser beauty device. By replacing the existing ordinary protective glass with sapphire glass, and utilizing the high thermal conductivity of sapphire glass, the cooling energy is also introduced into the window area, so that the entire area can be cooled during the laser beauty process, thus improving the user experience.

[0008] The first aspect of this utility model provides a cold compress work cap, including a cooling unit, a heat sink, a cold end, and sapphire glass;

[0009] The heat-generating surface of the refrigeration unit is in contact with the heat sink, and the cold-generating surface of the refrigeration unit is in contact with the cold end.

[0010] The cold end includes a cold end bracket and a work cap;

[0011] The cold end bracket is equipped with a mounting base that connects to the cold-generating surface of the refrigeration unit;

[0012] The cold end bracket is connected to the work cap for heat conduction.

[0013] The work cap has a window that runs through the center;

[0014] The inside of the work cap has a recessed groove, in which a piece of sapphire glass is embedded, completely covering the window.

[0015] As a further improvement of this utility model, a heat-conducting pad is provided between the heat-generating surface of the refrigeration unit and the heat sink.

[0016] As a further improvement of this utility model, a cooling pad is provided between the cooling surface of the refrigeration unit and the cold end support.

[0017] As a further improvement of this utility model, a gap is formed between the groove of the work cap and the side surface of the sapphire glass;

[0018] Apply adhesive to the gap to form a fixing adhesive.

[0019] As a further improvement of this utility model, the outer surface of the sapphire glass, except for the part exposed at the window, is in contact with the bottom surface of the groove of the work cap to form a cooling surface.

[0020] Furthermore, the area of ​​the cooling surface accounts for more than 50% of the total outer surface area of ​​the sapphire glass.

[0021] Furthermore, a cooling conductor is provided at the cooling surface between the sapphire glass and the work cap.

[0022] As a further improvement of this utility model, the window of the work cap has an arc-shaped chamfer on the side that contacts the skin.

[0023] The second aspect of this utility model provides a laser beauty device, which includes a laser, a laser beam shaping and homogenizing lens group, and the aforementioned cold compress cap.

[0024] The last element of the laser beam shaping and homogenizing lens group is a focusing lens, and the sapphire glass is provided outside the focusing lens.

[0025] As a further improvement of this utility model, the heat dissipation surface of the laser is connected to the heat sink.

[0026] This utility model's cooling cap and its laser beauty device utilize sapphire glass instead of ordinary protective glass, taking advantage of the following characteristics of sapphire glass:

[0027] 1. Sapphire glass has a high thermal conductivity, typically 30-40 W / (m·K), which allows it to quickly transfer cold energy. The cold energy transferred to the work cap is further transferred to the sapphire glass itself, so that the sapphire glass in the open part of the work cap, i.e. the window, also has a cooling effect. This allows the entire area of ​​the work cap to be cooled, and even the skin in the laser treatment area can be cooled directly through the sapphire glass.

[0028] 2. Sapphire glass has good light transmittance, can directly replace ordinary glass, and will not affect the penetration of the laser beam, thus not affecting the laser beauty effect;

[0029] 3. Sapphire glass has high hardness, reaching Mohs hardness level 9, which is higher than ordinary protective glass. It is more scratch-resistant and less prone to scratch damage during use, and will not affect the penetration of the laser beam. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the cooling cap of this utility model. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the overall structure of the cooling cap of this utility model. Figure 2 ;

[0032] Figure 3 This is a schematic diagram of the sapphire glass mounting structure of this utility model. Figure 1 ;

[0033] Figure 4 This is a schematic diagram of the sapphire glass mounting structure of this utility model. Figure 2 ;

[0034] Figure 5 for Figure 3A magnified view of a portion of the image;

[0035] Figure 6 This is a schematic diagram showing the dimensions of the sapphire glass and the window of this utility model.

[0036] Reference numerals: 1-Refrigeration unit, 2-Heat sink, 21-Heat conductive pad, 31-Cold end bracket, 32-Work cap, 33-Window, 34-Cooling pad, 35-Fixing seam, 36-Cooling surface, 4-Sapphire glass, 51-Fixing adhesive, 52-Cooling body, 6-Focusing lens. Detailed Implementation

[0037] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0038] The purpose of this invention is primarily to provide a work cap that can provide comprehensive cold compresses, and to replace existing work caps to create a new type of laser beauty device.

[0039] The overall structure of this utility model's cold compress work cap is as follows: Figure 1 , Figure 2 As shown, it includes a cooling unit 1, a heat sink 2, a cold end, and sapphire glass 4.

[0040] The cooling unit 1 typically uses a thermoelectric cooling module (TEC) to achieve cooling or heating by utilizing the Peltier effect of the semiconductor material. When the thermoelectric cooling module is energized, one side generates heat, which comes into contact with the heat sink 2, where the heat sink 2 conducts and dissipates the heat. The other side generates cold energy, which comes into contact with the cold end, and the cold energy is transferred to the working cap through the cold end.

[0041] The cold end includes a cold end bracket 31 and a work cap 32, which can be integrally formed or welded together to form the cold end.

[0042] The cooling unit 1 is generally rectangular in structure. To improve heat conduction efficiency, a heat-conducting pad 21 is usually placed between the heat-generating surface of the cooling unit 1 and the heat sink 2. Correspondingly, a heat-conducting pad 34 is usually placed between the cold-generating surface of the cooling unit 1 and the cold end support 31. The heat-conducting pads 21 and 34 are formed by cutting thermally conductive silicone pads to the appropriate size to match the cooling unit 1, or by solidifying thermally conductive silicone grease. Since the cooling unit 1 is generally made of semiconductor material sintered at high temperature, its surface is not particularly smooth. By setting soft heat-conducting pads 21 and 34, the contact area can be increased, so that the heat generated by the heat-generating surface of the cooling unit 1 can be transferred to the heat sink 2 more efficiently, and the cold generated by the cold-generating surface of the cooling unit 1 can also be transferred to the cold end support 31 more efficiently.

[0043] In addition to dissipating the heat generated by the cooling unit 1, the heat sink 2 can also be connected to the heat dissipation part of the laser inside the laser beauty device to dissipate the heat generated during the operation of the laser. The heat sink 2 will transfer the absorbed heat to an area away from the heat source, and dissipate it into the air through its own heat dissipation fins. Combined with the cooling fan, the heat will be carried away from the outside of the laser beauty device. This part can be referenced from the applicant's earlier application for a handheld home laser beauty device with Chinese patent publication number CN111557731A.

[0044] The key improvement of this utility model lies in the work cap 32, which further combines... Figure 3 , Figure 4 , Figure 5 , Figure 6 The cold end support 31 and the working cap 32 are both made of metal, which can efficiently conduct heat. A window 33 is provided in the middle of the working cap 32, which penetrates the working cap. The laser beam emitted by the laser is shaped and homogenized by the optical components, and then emitted through the final focusing lens 6. It can penetrate the skin through the window 33 to perform laser beauty treatment.

[0045] Typically, a protective glass piece with the same shape as the window 33 is embedded in the window 33 of the work cap 32, allowing the laser beam to pass through while preventing external impurities from entering the laser beauty device through the window 33. However, in the cold compress work cap of this utility model, a groove is provided on the inner side of the work cap 32, in which a sapphire glass 4 is embedded. The size of the groove and the sapphire glass 4 is larger than the window 33 and completely covers the window 33, thus also providing protection and shielding for the window 33.

[0046] A gap is formed between the groove of the work cap 32 and the side surface of the sapphire glass 4, which is the fixing seam 35. Fixing adhesive can be applied to the fixing seam 35, and after curing, it forms fixing adhesive 51, which reliably fixes the sapphire glass 4 in the groove of the work cap 32 to prevent it from falling off.

[0047] Further as Figure 5 , Figure 6The outer surface of the sapphire glass 4, excluding the portion exposed at the window 33, contacts the bottom surface of the groove of the work cap 32, forming a cooling surface 36. The area of ​​the cooling surface 36 accounts for more than 50% of the entire outer surface area of ​​the sapphire glass 4. By increasing the cooling contact area, the cooling effect of the sapphire glass 4 exposed in the window 33 area can be improved. More preferably, a thermally conductive silicone pad is provided on the cooling surface 36, or thermally conductive silicone or thermally conductive gel is applied, so that the cooling surface 36 between the sapphire glass 4 and the work cap 32 forms a cooling body 52, thereby improving the effective cooling effect. The cold contact area improves the heat conduction efficiency of the contact parts; the cold energy generated by the cooling unit 1 after being powered on is first conducted to the working cap 32 through the cold end bracket 31, so that the outer surface of the working cap 32 is also in a cold state. Under normal working conditions, the temperature is below 10℃. The cold energy on the working cap 32 will be further conducted to the sapphire glass 4 through the heat conduction surface 36, which also cools the sapphire glass 4; the thermal conductivity of the sapphire glass 4 is usually 30-40W / (m·K), so it can quickly transfer cold energy, so that the sapphire glass 4 is also in a cold state. Under normal working conditions, the temperature can reach below 15℃.

[0048] At the same time, the sapphire glass 4 has good light transmission, which is close to that of ordinary protective glass. Therefore, it will not affect the laser beam generated by the laser or the effect of laser treatment.

[0049] Furthermore, the sapphire glass 4 has a Mohs hardness of 9, which is higher than that of protective glass, making it more scratch-resistant and less prone to scratches and damage during use.

[0050] Preferably, the window 33 of the working cap 32 has a rounded chamfer on the side that contacts the skin. When the laser beauty device is used, the working cap 32 presses against the skin. Because the skin is elastic, the pressure will push the cap into the window 33, allowing it to directly contact the sapphire glass 4. At this time, the sapphire glass 4 is cool, allowing for direct cooling of the skin within the window 33. Furthermore, the sapphire glass 4 has a high thermal conductivity, resulting in high cooling efficiency, which can promptly transfer the cooling energy generated by the cooling unit 1 to the window 33. Throughout the laser beauty process, the skin within the window 33 is continuously cooled and cooled.

[0051] This utility model's cooling cap is applied to a laser beauty device, directly replacing the existing cap. During use, the laser beam is focused by the focusing lens 6, passes through the sapphire glass 4 and window 33, and focuses on the skin to be treated. The beam is not affected by the sapphire glass 4. At the same time, the sapphire glass 4 has good cooling properties, allowing the skin in the recessed treatment area of ​​window 33 to also come into contact with the cold substance, i.e., the sapphire glass 4. The sapphire glass 4 can directly cool the skin in the treatment area, so that the patient can receive cooling not only from the area where the cap 32 is pressed but also from the treatment area. The entire area within the pressure range of the cap 32 receives a cool sensation at all times, thereby further improving the user experience.

[0052] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cold compress work cap, characterized in that, Includes the cooling unit, heat sink, cold end, and sapphire glass; The heat-generating surface of the refrigeration unit is in contact with the heat sink, and the cold-generating surface of the refrigeration unit is in contact with the cold end. The cold end includes a cold end bracket and a work cap; The cold end bracket is equipped with a mounting base that connects to the cold-generating surface of the refrigeration unit; The cold end bracket is connected to the work cap for heat conduction. The work cap has a window that runs through the center; The inside of the work cap has a recessed groove, in which a piece of sapphire glass is embedded, completely covering the window.

2. The cold compress work cap as described in claim 1, characterized in that, A heat-conducting pad is placed between the heat-generating surface of the refrigeration unit and the heat sink.

3. The cold compress work cap as described in claim 1, characterized in that, A cooling pad is installed between the cooling unit's cooling surface and the cold end support.

4. The cold compress work cap as described in claim 1, characterized in that, A gap is formed between the groove of the work cap and the side face of the sapphire glass; Apply adhesive to the gap to form a fixing adhesive.

5. The cold compress work cap as described in claim 1, characterized in that, Except for the portion exposed at the window, the outer surface of the sapphire glass contacts the bottom surface of the groove in the work cap, forming a heat-conducting surface.

6. The cold compress work cap as described in claim 5, characterized in that, The area of ​​the cooling surface accounts for more than 50% of the total outer surface area of ​​the sapphire glass.

7. The cold compress work cap as described in claim 5, characterized in that, A cooling conductor is provided at the cooling surface between the sapphire glass and the work cap.

8. The cold compress work cap as described in claim 1, characterized in that, The window of the work cap has a rounded chamfer on the side that contacts the skin.

9. A laser beauty device, characterized in that, It includes a laser, a laser beam shaping and homogenizing lens group, and a cold compress work cap as described in any one of claims 1-8; The last element of the laser beam shaping and homogenizing lens group is a focusing lens, and the sapphire glass is provided outside the focusing lens.

10. The laser beauty device as described in claim 9, characterized in that, The heat dissipation surface of the laser is connected to the heat sink.

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