Ultrasonic head assembly and ultrasonic beauty instrument
By designing a phototherapy unit containing a light-shielding adhesive layer in the ultrasonic head assembly of the ultrasonic beauty device, the problem of light leakage in the assembly gap is solved, and a better light therapy effect is achieved.
Patent Information
- Application Number
- CN202420379516.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The assembly gap of the ultrasonic beauty device causes light leakage in the phototherapy functional part, affecting the light-emitting effect of the ultrasonic beauty device.
An ultrasonic head assembly is designed, including an ultrasonic unit and a phototherapy unit. The phototherapy unit is composed of a mounting shell, a skin-touching cover, a light-blocking adhesive layer and a light-emitting component. Through the light-blocking adhesive layer, light-blocking light leakage from the gap is improved, and the light-blocking effect of light-blocking is improved.
Effectively prevent light from leaking, improve the overall light therapy effect of the ultrasonic head assembly, and make the phototherapy function more stable and even.
Smart Images
Figure CN222445200U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of beauty equipment, in particular to an ultrasonic head assembly and an ultrasonic beauty instrument. Background Art
[0002] With the continuous progress of society, people's pursuit of beauty is constantly improving, which has promoted the vigorous development of medical cosmetology, among which ultrasonic beauty devices are one of them. Ultrasonic beauty devices use the three major effects of mechanical vibration waves (ultrasound for short) with a frequency of more than 20,000 Hz that cannot cause normal human hearing: mechanical action, thermal action and chemical action, to treat the human face to achieve beauty purposes. The ultrasonic beauty device in the related technology is also equipped with a phototherapy lamp, so that the ultrasonic beauty device also has a phototherapy function, but the assembly gap of the ultrasonic beauty device makes the phototherapy function part prone to light leakage, affecting the light output effect of the ultrasonic beauty device. Utility Model Content
[0003] The main purpose of the utility model is to provide an ultrasonic head assembly, aiming to solve the technical problem of how to improve the phototherapy light output effect of the ultrasonic head assembly.
[0004] To achieve the above purpose, the ultrasonic head assembly proposed by the utility model includes:
[0005] An ultrasonic unit, the ultrasonic unit comprising an energy box and an ultrasonic transducer installed in the energy box;
[0006] A phototherapy unit, wherein the phototherapy unit is arranged around the ultrasound unit, and the phototherapy unit includes a mounting shell, a skin-touch cover, a light-shielding adhesive layer and a light-emitting component. The skin-touch cover is adhered to the mounting shell by the light-shielding adhesive layer, the skin-touch cover has a light-transmitting area, the mounting shell is provided with a light-emitting groove opposite to the light-transmitting area, the light-shielding adhesive layer is arranged to avoid the light-emitting groove and the light-transmitting area, and the light-emitting component is installed in the light-emitting groove and emits light toward the light-transmitting area.
[0007] Optionally, the light emitting groove and the light-transmitting area are both arranged in a ring on the ultrasonic unit, and the light-shielding adhesive layer includes a first light-shielding adhesive ring and a second light-shielding adhesive ring, the first light-shielding adhesive ring extends along the inner peripheral edge of the light-transmitting area, and the second light-shielding adhesive ring extends along the outer peripheral edge of the light-transmitting area.
[0008] Optionally, the light-shielding adhesive layer is a black adhesive layer.
[0009] Optionally, the light-shielding adhesive layer is configured as a foam adhesive layer.
[0010] Optionally, the phototherapy unit includes a phototherapy lamp and a light uniformizer, the light uniformizer having a light incident surface and a light emitting surface, the phototherapy lamp emits light toward the light incident surface of the light uniformizer, and the light emitting surface of the light uniformizer faces the light-transmitting area.
[0011] Optionally, the light homogenizing element includes a light guiding layer and a diffusion layer, the light incident surface is formed on the light guiding layer, and the light emitting surface is formed on a side of the diffusion layer facing away from the light guiding layer.
[0012] Optionally, the light homogenizing member further includes a light reflecting layer, wherein the light reflecting layer is disposed on a side of the light guiding layer away from the diffusion layer, and the light incident surface is formed between the diffusion layer and the light reflecting layer.
[0013] Optionally, the phototherapy lamp comprises a plurality of lamp groups, and the plurality of lamp groups are arranged at intervals along the extension direction of the light evenly distributed member.
[0014] Optionally, the light therapy unit further includes a light shielding sheet, which is arranged between an edge of the light emitting surface and an edge of the light transmitting area.
[0015] The utility model also provides an ultrasonic beauty instrument, which comprises a body and the ultrasonic head assembly as described above.
[0016] In the technical solution of the ultrasonic head assembly of the utility model, the light emitted by the light-emitting assembly can be emitted from the skin-touch cover through the light-transmitting area to act on the user's skin. The light-shielding adhesive layer can not only bond and fix the skin-touch cover to the mounting shell, but also shield the gap between the skin-touch cover and the mounting shell to prevent the light of the light-emitting assembly from leaking out of the gap, thereby improving the overall phototherapy light-emitting effect of the ultrasonic head assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0018] Figure 1 This is a structural schematic diagram of an embodiment of an ultrasonic head assembly of the utility model;
[0019] Figure 2 This is a structural disassembly diagram of an embodiment of an ultrasonic head assembly of the utility model;
[0020] Figure 3 It is a structural explosion diagram of an embodiment of the ultrasonic head assembly of the utility model;
[0021] Figure 4It is a structural explosion diagram of another embodiment of the ultrasonic head assembly of the utility model;
[0022] Figure 5 It is a cross-sectional schematic diagram of an embodiment of an ultrasonic head assembly of the utility model;
[0023] Figure 6 It is a structural exploded diagram of an embodiment of a light averaging member in the utility model;
[0024] Figure 7 It is a schematic diagram of the internal structure of an embodiment of a light therapy unit in the present invention.
[0025] Description of Figure Numbers:
[0026] Label name Label name Label name 10 Ultrasonic unit 20 Light therapy unit 21 Install Shell 22 Skin touch cover 23 Light-shielding adhesive layer 24 Light emitting components 221 Light transmission area 211 light trough 231 First light shielding adhesive ring 232 Second light shielding adhesive ring 25 Light therapy lamp 26 Light balancing parts 261 Light guide layer 262 Diffusion layer 263 Reflective layer 27 Shading sheet
[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0031] With the continuous progress of society, people's pursuit of beauty is constantly improving, which has promoted the vigorous development of medical cosmetology, among which ultrasonic beauty devices are one of them. Ultrasonic beauty devices use the three major effects of mechanical vibration waves (ultrasound for short) with a frequency of more than 20,000 Hz that cannot cause normal human hearing: mechanical action, thermal action and chemical action, to treat the human face to achieve beauty purposes. The ultrasonic beauty device in the related technology is also equipped with a phototherapy lamp, so that the ultrasonic beauty device also has a phototherapy function, but the assembly gap of the ultrasonic beauty device makes the phototherapy function part prone to light leakage, affecting the light output effect of the ultrasonic beauty device.
[0032] The utility model provides an ultrasonic head assembly, aiming to solve the technical problem of how to improve the phototherapy light output effect of the ultrasonic head assembly.
[0033] In the embodiment of the present utility model, Figures 1 to 5 As shown, Figure 1 This is a structural schematic diagram of an embodiment of an ultrasonic head assembly of the utility model; Figure 2 This is a structural disassembly diagram of an embodiment of an ultrasonic head assembly of the utility model; Figure 3 It is a structural explosion diagram of an embodiment of the ultrasonic head assembly of the utility model; Figure 4 It is a structural explosion diagram of another embodiment of the ultrasonic head assembly of the utility model; Figure 5 It is a cross-sectional schematic diagram of an embodiment of an ultrasonic head assembly of the utility model.
[0034] The ultrasound head assembly includes: an ultrasound unit 10, the ultrasound unit 10 includes an energy box and an ultrasound transducer installed in the energy box; a phototherapy unit 20, the phototherapy unit 20 is arranged around the ultrasound unit 10, the phototherapy unit 20 includes a mounting shell 21, a skin-touch cover 22, a light-shielding adhesive layer 23 and a light-emitting component 24, the skin-touch cover 22 is adhered to the mounting shell 21 through the light-shielding adhesive layer 23, the skin-touch cover 22 has a light-transmitting area 221, the mounting shell 21 is provided with a light-emitting groove 211 opposite to the light-transmitting area 221, the light-shielding adhesive layer 23 is arranged to avoid the light-emitting groove 211 and the light-transmitting area 221, and the light-emitting component 24 is installed in the light-emitting groove 211 and emits light toward the light-transmitting area 221.
[0035] In this embodiment, the energy box has a skin-touch wall, the outer surface of which is flush with the outer surface of the skin-touch cover 22. When the ultrasonic head assembly abuts against the user's skin, both the skin-touch wall and the skin-touch cover 22 can contact the user's skin. The energy box can be filled with an ultrasonic solution, which can conduct the ultrasonic waves emitted by the ultrasonic transducer and cool the ultrasonic transducer. The ultrasonic transducer can convert electromagnetic energy into mechanical vibration waves.
[0036] The ultrasonic waves generated by the ultrasonic transducer have mechanical, thermal and chemical effects on human skin. Ultrasonic waves have strong power and high energy. When applied to the face, they can make skin cells vibrate, produce a fine massage effect, change cell volume, and thus improve the circulation of local blood and lymph, enhance cell permeability, improve tissue metabolism and regeneration, soften tissue, stimulate the nervous system and cell function, and make the skin shiny and elastic. Through the thermal effect of ultrasonic waves, the temperature of the skin surface can be increased, blood circulation can be accelerated, nutrients for skin cells can be increased, nerve excitability can be reduced, analgesic effect can be achieved, spasmodic muscle fibers can be relaxed, and spasmodic effect can be achieved. The heat of ultrasonic waves is endogenous heat. 79% to 82% of the heat is transported away from the action area by blood, and 18% to 21% is dispersed to adjacent tissues by heat conduction. Therefore, users do not feel obvious heat. Ultrasonic waves can enhance catalytic ability, accelerate the metabolism of skin cells, change the pH value of tissues to alkaline, and reduce acidosis and pain associated with skin inflammation. Ultrasound can increase the permeability of cell membranes, depolymerize nutrients and drugs, facilitate the skin to absorb nutrients, facilitate drugs to penetrate into bacteria, and improve bactericidal ability.
[0037] The skin-touch cover 22 may be made of a light-transmitting material as a whole, or may be made of a light-transmitting material only in a portion of the light-transmitting area 221. There is no limitation here, as long as the skin-touch cover 22 allows light to pass through at least in the light-transmitting area 221. The light-emitting component 24 is installed in the installation shell 21, so that the light-emitting component 24 emits light through the light-transmitting area 221 while avoiding direct exposure to the outside, so as to hide and protect the light-emitting component 24.
[0038] The light emitting component 24 can stimulate the skin by photochemical action, causing chemical changes in the molecular structure of collagen fibers and elastic fibers in the dermis, increasing their number, rearranging them, and restoring their original elasticity, thereby achieving the therapeutic effect of eliminating wrinkles and shrinking pores.
[0039] The light-shielding adhesive layer 23 has both bonding and light-shielding functions. The light-shielding adhesive layer 23 can bond and fix the skin-touch cover 22 to the mounting shell 21 to simplify the connection process between the skin-touch cover 22 and the mounting shell 21 and improve the connection efficiency. The light-shielding adhesive layer 23 is located in the gap between the skin-touch cover 22 and the shell wall of the mounting shell 21. The projection of the light-shielding adhesive layer 23 on the skin-touch cover 22 can surround the light-transmitting area 221 to prevent light leakage from the gap between the skin-touch cover 22 and the shell wall of the mounting shell 21, so that the light therapy unit 20 can concentrate light through the light-transmitting area 221 to improve the overall light-emitting effect.
[0040] Specifically, Figure 3 and Figure 4As shown, the light emitting groove 211 and the light-transmitting area 221 are both arranged in a ring on the ultrasonic unit 10, and the light-shielding adhesive layer 23 includes a first light-shielding adhesive ring 231 and a second light-shielding adhesive ring 232, the first light-shielding adhesive ring 231 extends along the inner circumference of the light-transmitting area 221, and the second light-shielding adhesive ring 232 extends along the outer circumference of the light-transmitting area 221.
[0041] The light output groove 211 and the light-transmitting area 221 are arranged in a circle around the ultrasonic unit 10, so that the light-emitting component 24 can also be ring-shaped and arranged in a circle around the ultrasonic unit 10. In this way, the light output area of the phototherapy unit 20 can be increased; in addition, after the ultrasonic head component abuts against the user's skin, the ultrasonic unit 10 can apply ultrasonic waves to the user's skin at the center, and the phototherapy unit 20 can apply phototherapy irradiation to the user's skin around the ultrasonic unit 10. As a result, the phototherapy irradiation effect can be diffused to the entire skin area covered by the ultrasonic head assembly, thereby making the ultrasonic effect and phototherapy effect on the skin area more uniform, and there is no need for the user to perform different functional emphasizing physiotherapy on the same skin area multiple times, thereby improving the physiotherapy effect of the ultrasonic beauty device.
[0042] The projections of the first light-shielding adhesive ring 231 and the second light-shielding adhesive ring 232 on the skin-touch cover 22 jointly surround the light-transmitting area 221. In this way, light leakage from the inner and outer sides of the light-transmitting area 221 can be prevented at the same time, so as to improve the anti-light leakage effect of the phototherapy unit 20, thereby further improving the overall light output effect of the phototherapy unit 20.
[0043] In practical applications, the light-shielding adhesive layer 23 is a black adhesive layer, and the black material has a more obvious light-shielding effect on light, thereby improving the light-shielding effect of the light-shielding adhesive layer 23. The light-shielding adhesive layer 23 is configured as a foam adhesive layer, and the foam adhesive layer can be a water-absorbing foam, which can absorb moisture entering the gap between the skin-touch cover 22 and the mounting shell 21, thereby preventing moisture from entering the mounting shell 21 and causing the light-emitting component 24 to malfunction. In this way, the sealing and waterproof effect of the phototherapy unit 20 can be improved, so as to improve the structural stability of the ultrasound head assembly.
[0044] For example, Figure 3 and Figure 4As shown, the phototherapy unit 20 includes a phototherapy lamp 25 and a light homogenizer 26. The light homogenizer 26 has a light incident surface and a light emitting surface. The phototherapy lamp 25 emits light toward the light incident surface of the light homogenizer 26, and the light emitting surface of the light homogenizer 26 faces the light transmission area 221. The light homogenizer 26 can be arranged in a plate shape, a strip shape, or a ring shape, which is not limited here. The light emitted by the phototherapy lamp 25 first enters the light homogenizer 26 from the light incident surface, and then is emitted from the light emitting surface after the light path is adjusted by scattering, refraction or reflection in the light homogenizer 26, and finally emits light through the light transmission area 221 of the skin-touch cover 22. The light homogenizer 26 can make the light intensity emitted from each part of the light emission surface more uniform, so that the light emission intensity of each part of the light transmission area 221 is more uniform, so that the therapeutic light can act evenly on the human skin opposite to the light transmission area 221, thereby improving the phototherapy effect.
[0045] Specifically, Figure 6 As shown, Figure 6 The exploded view of the structure of an embodiment of the light balancing member 26 in the utility model. The light balancing member 26 comprises a light guiding layer 261 and a diffusion layer 262 , the light incident surface is formed on the light guiding layer 261 , and the light emitting surface is formed on a side of the diffusion layer 262 away from the light guiding layer 261 .
[0046] The light guide layer 261 is made of transparent material, and microstructures are processed on its surface, such as laser engraving, V-shaped cross grid engraving or light guide points printed by UV screen printing technology; these structures help the light to be reflected and refracted multiple times inside the light guide layer 261, so as to achieve uniform distribution and diffusion of the light. The light guide layer 261 can evenly distribute the incident light to various parts. The diffusion layer 262 uses chemical or physical means to utilize the physical phenomena of refraction, reflection and scattering when the light encounters two media with different refractive indices on the way, and artificially adjusts the light by adding inorganic or organic light diffusers to the base materials such as PMMA, PC, PS, PP, or by arranging the array of micro-feature structures on the surface of the base material, so that the light refracts, reflects and scatters in different directions, thereby changing the travel route of the light, and achieving full dispersion of the incident light to produce the effect of optical diffusion. The diffusion layer 262 can make the light output effect of the light-homogenizing member 26 softer, avoid the light emitted from the light-transmitting area 221 from being too glaring or irritating to the skin, so as to improve the light output effect of the phototherapy unit 20.
[0047] In practical applications, such as Figure 6As shown, the light homogenizing member 26 further includes a light reflecting layer 263, which is disposed on a side of the light guiding layer 261 away from the diffusion layer 262, and the light incident surface is formed between the diffusion layer 262 and the light reflecting layer 263. The light reflecting layer 263 can reflect the light whose irradiation direction is away from the diffusion layer 262 toward the diffusion layer 262, so that the light input into the light guiding layer 261 can be fully and effectively directed toward the diffusion layer 262, and finally emitted through the diffusion layer 262, thus improving the effective utilization rate of the physiotherapy light.
[0048] The number of the phototherapy lamps 25 may be one, or two or more. If the phototherapy lamps 25 are arranged in a group, the phototherapy lamps 25 may include only one lamp group, or two or more lamp groups.
[0049] Specifically, Figure 3 , Figure 4 and Figure 7 As shown, Figure 7 Schematic diagram of the internal structure of an embodiment of the phototherapy unit 20 in the present invention. The phototherapy lamp 25 includes a plurality of lamp groups, and the plurality of lamp groups are arranged at intervals along the extension direction of the light-distributing member 26. In this way, each part of the light-incident surface of the light-distributing member 26 can obtain sufficient light incident, and the light output intensity of each part of the light-outputting surface of the light-distributing member 26 is made more uniform.
[0050] In practical applications, each of the light groups includes a red light, a yellow light and a green light.
[0051] The red light can emit red light with a wavelength of 620nm to 750nm, which can penetrate into the skin to a depth of 1 to 6mm. Red light can accelerate the respiration and regeneration of cell tissues, thereby improving the microcirculation of the skin and making the skin plump and firm. At the same time, after the tissue cells absorb light energy, the body's leukocyte phagocytic immune defense system function is enhanced, anti-inflammatory and itching, promote skin cell regeneration, accelerate wound healing, promote blood circulation, accelerate human metabolism, repair acne marks, promote the activation of effective ingredients, tighten sagging skin, and improve skin tone. The yellow light can emit yellow light with a wavelength of 570nm to 590nm, which can penetrate into the skin to a depth of 0.5 to 2mm. Yellow light can improve skin color, inhibit melanin formation, dilute pigmentation, have a whitening effect, and improve redness and swelling. The green light can emit green light with a wavelength of 495nm to 560nm, which has a skin soothing effect and is suitable for soothing and repairing sensitive skin. By including red light, yellow light and green light in each light group, the phototherapy unit 20 can irradiate red light, yellow light and green light to the user's skin at the same time, so as to further improve the phototherapy effect on the user's skin.
[0052] For example, Figure 3 and Figure 4As shown, the phototherapy unit 20 further includes a light shielding sheet 27, which is disposed between the edge of the light emitting surface and the edge of the light-transmitting area 221. The light shielding sheet 27 can be configured as a light-shielding Mylar sheet, and the light shielding sheet 27 can prevent light leakage from the gap between the light-distributing member 26 and the light-transmitting area 221, so that the light emitted from the light-distributing member 26 can fully pass through the light-transmitting area 221.
[0053] The utility model also provides an ultrasonic beauty instrument, which includes a body and an ultrasonic head assembly. The specific structure of the ultrasonic head assembly refers to the above embodiment. Since the ultrasonic beauty instrument adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the ultrasonic head assembly is installed on the body and the skin-touch cover 22 is exposed on the body.
[0054] In the technical solution of the ultrasonic head assembly of the utility model, the light emitted by the light emitting assembly 24 can be emitted from the skin-touch cover 22 through the light-transmitting area 221 to act on the user's skin. The light-shielding adhesive layer 23 can not only bond and fix the skin-touch cover 22 to the mounting shell 21, but also block the gap between the skin-touch cover 22 and the mounting shell 21 to prevent the light of the light emitting assembly 24 from leaking out of the gap, thereby improving the overall phototherapy light-emitting effect of the ultrasonic head assembly.
[0055] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An ultrasonic head assembly, characterized in that: include: An ultrasonic unit, the ultrasonic unit comprising an energy box and an ultrasonic transducer installed in the energy box; A phototherapy unit, wherein the phototherapy unit is arranged around the ultrasound unit, and the phototherapy unit includes a mounting shell, a skin-touch cover, a light-shielding adhesive layer and a light-emitting component. The skin-touch cover is adhered to the mounting shell by the light-shielding adhesive layer, the skin-touch cover has a light-transmitting area, the mounting shell is provided with a light-emitting groove opposite to the light-transmitting area, the light-shielding adhesive layer is arranged to avoid the light-emitting groove and the light-transmitting area, and the light-emitting component is installed in the light-emitting groove and emits light toward the light-transmitting area.
2. The ultrasonic head assembly according to claim 1, characterized in that: The light emitting groove and the light-transmitting area are both arranged in a ring on the ultrasonic unit, and the light-shielding adhesive layer includes a first light-shielding adhesive ring and a second light-shielding adhesive ring, the first light-shielding adhesive ring extends along the inner circumference of the light-transmitting area, and the second light-shielding adhesive ring extends along the outer circumference of the light-transmitting area.
3. The ultrasonic head assembly according to claim 1, characterized in that: The light-shielding adhesive layer is a black adhesive layer.
4. The ultrasonic head assembly according to claim 1, characterized in that: The light-shielding adhesive layer is configured as a foam adhesive layer.
5. The ultrasonic head assembly according to claim 1, characterized in that: The phototherapy unit includes a phototherapy lamp and a light uniformizer, the light uniformizer has a light incident surface and a light emitting surface, the phototherapy lamp emits light toward the light incident surface of the light uniformizer, and the light emitting surface of the light uniformizer faces the light-transmitting area.
6. The ultrasonic head assembly according to claim 5, characterized in that: The light homogenizing member comprises a light guiding layer and a diffusion layer. The light incident surface is formed on the light guiding layer, and the light emitting surface is formed on a side of the diffusion layer away from the light guiding layer.
7. The ultrasonic head assembly according to claim 6, characterized in that: The light homogenizing member further includes a light reflecting layer, which is disposed on a side of the light guiding layer away from the diffusion layer, and the light incident surface is formed between the diffusion layer and the light reflecting layer.
8. The ultrasonic head assembly according to claim 7, characterized in that: The phototherapy lamp includes a plurality of lamp groups, and the plurality of lamp groups are arranged at intervals along the extension direction of the light uniforming member.
9. The ultrasonic head assembly according to claim 5, characterized in that: The light therapy unit also includes a light shielding sheet, which is arranged between the edge of the light emitting surface and the edge of the light transmitting area.
10. An ultrasonic beauty instrument, characterized in that: The ultrasonic head assembly comprises a body and the ultrasonic head assembly according to any one of claims 1 to 9.