Handheld head care device

Abstract

This utility model discloses a handheld head care device, relating to the field of optical technology. The handheld head care device includes a housing, a light source, and protrusions. The housing includes a shell wall with a light-transmitting area; multiple light sources are disposed within the housing; multiple protrusions are disposed, each having a light-transmitting area on at least one side circumferentially; the multiple protrusions are arranged in an array, the array arrangement including at least one or any combination of a ring array, a rectangular array, and a path array; the protrusions can part the user's hair and expose the scalp area based on combing movements; the light emitted by the light sources, after irradiating the scalp area through the light-transmitting areas, forms a light irradiation area, which at least partially irradiates the exposed scalp area to ensure the effectiveness of light irradiation, thereby improving the care effect of the handheld head care device and meeting the user's needs.

Description

[0001] (This application is a divisional application of the original application, filed on July 17, 2024, application number: 202421695418.4, invention title: handheld head care device) Technical Field

[0002] This utility model relates to the field of optical technology, and in particular to a handheld head care device. Background Technology

[0003] Irradiating the scalp with light of specific wavelengths has been recognized as beneficial; for example, red light with a wavelength of 650nm has been shown to stimulate hair follicles, achieving the effects of hair growth or preventing hair loss.

[0004] Handheld head care devices can provide head care by emitting light sources of specific wavelengths, as described above, through the device itself. These care methods include promoting hair growth, preventing hair loss, sterilization, and controlling sebum secretion.

[0005] These handheld head care devices are convenient and easy to use, while also providing a certain level of care, making them quite popular.

[0006] Handheld head care devices typically require high-powered light output to reach deep into the skin, and this type of light is considered too strong for the human eye to withstand, potentially causing damage if it gets into the eyes. Current handheld head care devices fail to provide effective eye protection, resulting in frequent light exposure during use, a lack of safety features, and a poor user experience. Utility Model Content

[0007] The purpose of this invention is to provide a handheld head care device that can ensure the light energy in the scalp area, thereby ensuring the phototherapy effect of the handheld head care device.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] Handheld head care devices, including:

[0010] The housing, including the housing surface wall with a light-transmitting area;

[0011] Multiple light sources are provided and distributed within the housing;

[0012] The protrusions are provided in multiples, and each protrusion has a light-transmitting area on at least one side in the circumferential direction; the multiple protrusions are arranged in an array, and the array arrangement includes at least one or any combination of a ring array, a rectangular array, and a path array;

[0013] The protrusion can part the user's hair and expose the scalp area based on the combing activity. The light emitted by the light source shines on the scalp area through the light-transmitting area, forming a light-irradiated area. The light-irradiated area at least partially irradiates the exposed scalp area.

[0014] As an alternative to the handheld head care device, among the array of protrusions, the outermost protrusion is located inside the light-transmitting area.

[0015] As an alternative to the handheld head care device, the light-transmitting area is circular, and each light-transmitting area corresponds to a light source arrangement.

[0016] As an alternative to the handheld head care device, among the plurality of protrusions arranged in a rectangular array, the light-transmitting area is located on the circumferential side of the protrusion, and a group of light sources arranged around the outer side of the protrusion are arranged.

[0017] As an alternative to the handheld head care device, there are at least two light-transmitting areas between two adjacent protrusions, and in the X-axis direction, the multiple light-transmitting areas between two adjacent protrusions form a "triangular" light irradiation collection area.

[0018] And / or, the multiple light-transmitting areas between two adjacent protrusions constitute a "waist-shaped" light irradiation collection area.

[0019] As an alternative to the handheld head care device, the protrusions are arranged in vertical columns in the Y-axis direction, and each column of protrusions has an adjacent light-transmitting area. Two more columns of the light-transmitting areas are arranged around the periphery of the vertically arranged protrusions.

[0020] As an alternative to the handheld head care device, a light-transmitting area is arranged adjacent to each other between two adjacent protrusions in the X-axis and Y-axis directions.

[0021] As an alternative to the handheld head care device, both the protrusion and the light-transmitting area are arranged in a path array that is symmetrically arranged in four directions, and the light-transmitting area is located inside the protrusion.

[0022] As an alternative to the handheld head care device, both the protrusions and the light-transmitting areas are arranged in a ring array, and the light path of the light-transmitting areas arranged in the ring array is circular and continuous.

[0023] As an alternative to the handheld head care device, the light-transmitting area is annular, and each annular light-transmitting area corresponds to a plurality of light sources arranged in a ring array.

[0024] As an alternative to the handheld head care device, the outer wall of the shell, except for the light-transmitting area, is a non-light-transmitting area.

[0025] As an alternative to the handheld head care device, the light source is an LED light source or a laser light source.

[0026] As an optional solution for the handheld head care device, the wavelength of the light emitted by the light source is a set wavelength, which includes 290nm~400nm, 405nm~470nm, 620nm~670nm or 670nm~1600nm.

[0027] As an alternative to the handheld head care device, the protrusion is at least partially erect on the shell surface.

[0028] As an alternative to the handheld head care device, the handheld head care device is a hair growth device.

[0029] The beneficial effects of this utility model are:

[0030] The handheld head care device provided by this utility model allows users to part their hair and expose the scalp by using protrusions on the shell wall adjacent to the light-transmitting area. A light source emits light outward through this area. Multiple protrusions are arranged in an array, including at least one or any combination of a circular array, rectangular array, and path array. This arrangement creates a light-irradiated area on the scalp, ensuring at least partial illumination of the exposed scalp area and thus improving the effectiveness of the light irradiation. This enhances the care effect of the handheld head care device and meets the user's needs. Attached Figure Description

[0031] Figure 1 This utility model provides an exemplary exploded view of a handheld head care device.

[0032] Figure 2 This utility model provides an exemplary structural diagram of a handheld head care device assembly.

[0033] Figure 3 This utility model provides an exemplary side sectional view of a handheld head care device in a handheld state, according to a specific embodiment of the present invention.

[0034] Figure 4This utility model provides an exemplary side sectional view of a protrusion in a handheld head care device.

[0035] Figure 5 This utility model provides an exemplary schematic diagram of a user using a handheld head care device.

[0036] Figure 6 This utility model provides a schematic diagram of the arrangement of protrusions and light-transmitting areas in a first handheld head care device.

[0037] Figure 7 This utility model provides a schematic diagram of the structure of the scalp area irradiated by the light emitted by the light source in a specific embodiment of the present invention;

[0038] Figure 8 This utility model provides a schematic diagram showing the arrangement of different hair combing paths with the light-transmitting unit when they pass through the same protrusion.

[0039] Figure 9 This utility model provides a schematic diagram showing the regional positional relationship of light emitted from a light source irradiating the scalp area.

[0040] Figure 10 This utility model provides a schematic diagram showing the relationship between the area between two adjacent protrusions and the area of ​​the effective light-transmitting collection area.

[0041] Figure 11 This utility model provides a schematic diagram of the arrangement of protrusions and light-transmitting areas in a second type of handheld head care device.

[0042] Figure 12 This utility model provides a schematic diagram of the arrangement of protrusions and light-transmitting areas in a third type of handheld head care device.

[0043] Figure 13 This utility model provides a schematic diagram of the arrangement of protrusions and light-transmitting areas in a fourth type of handheld head care device.

[0044] Figure 14 This utility model provides a schematic diagram of the arrangement of protrusions and light-transmitting areas in a fifth type of handheld head care device.

[0045] Figure 15 This utility model provides a schematic diagram of the arrangement of protrusions and light-transmitting areas in a sixth type of handheld head care device.

[0046] In the picture:

[0047] 001 - Combing direction;

[0048] 101 - First combing path, 102 - Second combing path, 103 - Third combing path, 104 - Fourth combing path, 105 - Fifth combing path, 106 - Sixth combing path;

[0049] 11-Front cover plate, 111-Shell surface wall, 112-Positioning post, 113-Through hole one, 114-Light-transmitting area, 1141-Effective light-transmitting area, 1142-Inefficient light-transmitting area, 115-Non-light-transmitting area;

[0050] 12-Middle frame, 121-Middle frame end, 1211-Through hole two, 1212-Mounting groove, 1213-Middle frame front wall, 122-Middle frame grip;

[0051] 13-Back panel, 131-Back panel end, 1311-Reinforcing rib, 132-Back panel grip, 133-Control button;

[0052] 20-Protrusion, 201-Outer edge contour, 202-Path area, 2001-Protrusion projection area, 21-Extension part, 211-End, 22-Base, 221-Accommodation space, 23-Elastic element;

[0053] 300 - Circuit board, 310 - Light source, 311 - Irradiation area, 3110 - Irradiation collection area, 3111 - Effective irradiation area, 3112 - Inefficient irradiation area;

[0054] 400-rechargeable battery;

[0055] 500 - Scalp area, 501 - Hair parting, 502 - Hair;

[0056] 61 - First sensor, 62 - Second sensor. Detailed Implementation

[0057] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] 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.

[0059] Figure 1This is an exemplary exploded view of a handheld head care device. Figure 2 This is an exemplary structural diagram of a handheld head care device assembly. Figure 1 and Figure 2 In the example, the handheld head care device includes a housing, a light source 310, and protrusions 20. The housing includes a housing wall 111 with a light-transmitting area 114. Multiple protrusions 20 are provided, and each protrusion 20 has a light-transmitting area 114 on at least one side in the circumferential direction. When the user is combing their hair or when someone else is combing their hair, these protrusions 20 can part the hair 502 based on the combing activity. The light source 310 can emit light through the light-transmitting area 114 to the exposed scalp area 500.

[0060] The housing may include a front cover plate 11, a middle frame 12 and a back plate 13. The front cover plate 11 is a cover for the middle frame 12 and has a shell surface wall 111 with a light-transmitting area 114. The shell surface wall 111 also has a positioning post 112 for positioning the protrusion 20. The positioning post 112 has an axial through hole 113 through the front cover plate 11 to facilitate the assembly of the protrusion 20. The middle frame 12 has a middle frame end 121 adapted to the front cover plate 11 and a middle frame grip 122 integrally formed with the middle frame end 121 and located at the other end. An array of mounting grooves 1212 and through holes 1211 are provided on the front surface wall 1213 of the middle frame end 121. The mounting grooves 1212 are used to adapt to the positioning connection of the protrusion 20, while the through holes 1211 are adapted to the layout position of the light source 310 and allow the light from the light source 310 to pass through. Here, the opening position of the through holes 1211 corresponds to the position of the light-transmitting area 114, so that the light can pass through the through holes 1211 and then be emitted outward through the light-transmitting area 114. The back plate 13 has an outer contour adapted to the middle frame 12. It includes a back plate end 131 adapted to be connected to the middle frame end 121 and a back plate gripping part 132 adapted to be connected to the middle frame gripping part 122. After the middle frame 12 is connected to the back plate 13, a relatively closed receiving cavity can be formed to assemble electrical components. A reinforcing rib 1311 for supporting electrical components is also formed on the inner side of the back plate end 131.

[0061] The cavity formed between the middle frame 12 and the back plate 13 can be used to install the circuit board 300 and the rechargeable battery 400. The configuration of the circuit board 300 can be adapted to the shape of the end of the middle frame 121 to facilitate the layout of multiple light sources 310. Figure 2In this circuit, the light sources 310 can be arranged in an array to correspond to the position of the through-hole 1211. When the circuit board 300 is assembled, the light sources 310 are at least partially located within the through-hole 1211, and their light-emitting ends can point towards the light-transmitting area 114. The rechargeable battery 400 is electrically connected to the circuit board 300 and can supply power to the light sources 310. The circuit board 300 has a control circuit that can control various electrical components inside the head care device, such as controlling the turning on and off of the light sources 310 and adjusting their output power. It can also be used to control the processing of sensors, such as distance sensors and temperature and humidity sensors.

[0062] Figure 3 This is an exemplary side sectional view of a handheld head care device in a handheld state. A control button 133 is also installed on the back panel grip 132. The output of the control button 133 is connected to the circuit board 300 to provide at least one control feedback, such as controlling the device to turn on or off, or pressing and holding the control button 133 can provide different light output modes, etc.

[0063] Figure 4 This is an exemplary side sectional view of a protrusion in a handheld head care device. The protrusion 20 may be composed of an elastic component, including a base 22, an elastic element 23, and a telescopic part 21. The base 22 has an accommodating space 221. The elastic element 23 can provide elastic extension and contraction along the axial direction of the protrusion 20. For example, the elastic element 23 may be a spring. The elastic element 23 is assembled in the accommodating space 221, with one end abutting against the bottom wall of the accommodating space 221 and the other end abutting against the end of the telescopic part 21. The telescopic part 21 achieves force extension and contraction along its axial direction through the elastic modulus of the elastic element 23. Specifically, both the base 22 and the telescopic part 21 can be cylindrical structures with a circular cross-section. When assembled with the housing, the base 22 is adapted to be positioned in the mounting groove 1212. After the front cover 11 and the middle frame 12 are connected, the telescopic part 21 can at least partially penetrate the through hole 113 to be exposed to the outside of the housing. After assembly, the ends 211 of the multiple protrusions 20 can all be formed on the same horizontal plane. The telescopic part 21 has an elastic telescopic range. In use, during the hair combing process, the ends 211 of each protrusion 20 can effectively fit the scalp and separate the hair 502 after being subjected to force, which is more conducive to the light source 310 irradiating light onto the scalp area 500.

[0064] exist Figure 1 , Figure 2 and Figure 3In the example, the handheld head care device also includes a first sensor 61, which is used to detect the distance difference between itself and the user's hair 502. The first sensor 61 is communicatively connected to the light source 310. When the distance difference between the first sensor 61 and the hair 502 is within a threshold activation distance, the light source 310 is turned on or off based on the distance difference between the first sensor 61 and the hair 502.

[0065] The first sensor 61 can be an optical sensor, an infrared sensor, or an ultrasonic sensor, etc. As an optical sensor, it calculates the time it takes for the emitted light pulse to be reflected by an object, and then estimates the distance between the sensor and the object. In this embodiment, the first sensor 61 is used to calculate the distance difference between the sensor and the hair 502. The first sensor 61 can be mounted on the outer or inner wall of the front cover 11 or the wall of the middle frame 12. To further ensure the accuracy of the distance measurement, in this embodiment, the first sensor 61 is preferably mounted on the inner wall of the front cover 11. The first sensor 61 can be an optical sensor, and the part mounted on the inner wall is transparent to allow the first sensor 61 to better emit light pulses outwards. At the same time, the front cover 11 also provides protection for the first sensor 61.

[0066] In the exemplary configuration, the threshold activation distance can be a set value. Turning the light source 310 on and off can be considered two independent actions; that is, the threshold activation distance for turning the light source 310 on and the threshold activation distance for turning it off can be the same or different. Only the state conditions of the light source 310 need to be set. For example, when the control button 133 is turned on, the device is powered on and in standby mode, and the light source 310 is in an off state. The set proximity threshold activation distance is 3cm. When the user holds the device and brings it close to their head, the first sensor 61 detects whether the difference in distance between the device and the hair 502 is less than 3cm. If it is less, the light source 310 is turned on. Alternatively, when using the device, the light source 310 is in an on state. The set distance for moving away is 5cm. When the user holds the device and moves away from their head, the first sensor 61 detects whether the difference in distance between the device and the hair 502 is greater than 5cm. If it is greater, the light source 310 is turned off. Users can control the light source 310 based on the corresponding proximity and distance actions. This not only ensures efficient use of light energy but also provides a better user experience. It is worth noting that under normal usage, when the control button 133 is turned on, the light source 310 is in the off state. This is to ensure that the eyes cannot look directly at the light or observe the light in this state. For the high-output power light source 310, this undoubtedly provides an effective safety precaution. In conjunction with this, when the light source 310 is turned on near the head and within the preset threshold activation distance, the light illumination function can be achieved while ensuring that the light does not enter the eyes. Similarly, when the device is held and away from the head, turning off the light source 310 within the preset threshold activation distance can effectively prevent the light from entering the eyes.

[0067] If needed, a feedback component (not shown in the figure) can also be installed on the device. This feedback component is communicatively connected to the light source 310 and is used to indicate the on or off state of the light source 310. Taking initial use as an example, when control button 133 is turned on, the light source 310 is in an off state. Then, as the device gradually approaches the head and is detected at a threshold activation distance of 3cm, the light source 310 turns on. Simultaneously, because the device is close to the head and the user's eyes cannot see the light, the feedback component activates and provides tactile or auditory feedback to the user that the light source 310 is on. That is, the state of the light source 310 is associated with the feedback component to remind the user. The feedback component can be a buzzer, a vibration motor, or, if necessary, both or other components. Conversely, when the device is moved away from the head and detected at a threshold activation distance exceeding 5cm, the light source 310 turns off. Simultaneously, the feedback component associated with the light source 310 turns on again and provides tactile or auditory feedback to the user that the light source 310 is off. The purpose of this is to ensure that users can know the real-time status of the light source 310 through tactile or auditory feedback even when they cannot observe the current status of the light source 310.

[0068] In some configurations, the state of the light source 310 can be not only on and off, but also a change in output power. For example, the first sensor 61 is used to detect the distance difference between itself and the user's hair 502. The handheld head care device can adjust the output power of the light source 310 based on the distance difference between the first sensor 61 and the hair 502 through the control circuit. When the distance difference between the first sensor 61 and the hair 502 is within the threshold activation distance, the output power of the light source 310 increases as the distance difference between the first sensor 61 and the hair 502 increases, and the output power of the light source 310 decreases as the distance difference between the first sensor 61 and the hair 502 decreases; when the distance difference between the first sensor 61 and the hair 502 is outside the threshold activation distance, the light source 310 is off. Taking initial user experience as an example, when the user activates control button 133, the light source 310 is initially off. The device then gradually approaches the head and is detected at a threshold activation distance of 3cm. At this point, the light source 310 activates, with an output power of 7mW. Simultaneously, the feedback component activates, providing tactile or auditory feedback to the user that the light source 310 is on. As the device approaches the hair 502, the output power of the light source 310 gradually decreases until the detection distance reaches 0cm, at which point the output power drops to 5mW. During this power change, the feedback component adjusts accordingly, providing more accurate feedback to the user. For example, the device uses a vibration motor to provide tactile feedback; as the output power decreases, the vibration frequency of the motor also decreases synchronously. It's important to note that the output power of the light source 310 decreases as the distance decreases to ensure that the light energy reaching the scalp area 500 remains relatively stable, thus providing a better user experience. Correspondingly, as the device moves away from the head, the output power of the light source 310 gradually increases from 5mW as the distance difference increases. During this period, the vibration frequency of the vibration motor can increase synchronously. When the distance difference reaches 5cm, the output power reaches 10mW. When it exceeds 5cm, the light source 310 is turned off.

[0069] In some configurations, Figure 1 , Figure 2 and Figure 3The illustrated handheld head care device may also include a second sensor 62 for detecting the temperature and humidity of the user's scalp, and its mounting position may be similar to that of the first sensor 61. For example, the handheld head care device includes a communication module electrically connected to the circuit board 300. The handheld head care device can communicate with a smart terminal through the communication module. After detecting the temperature and humidity of the user's scalp, the second sensor 62 can process or store the information and send it to the smart terminal (e.g., a mobile phone) via the communication module, allowing the user to obtain relevant head information in a timely manner for better adjustment of subsequent care plans.

[0070] In some configurations, multiple protrusions 20 are arranged in an array, including at least one or any combination of circular arrays, rectangular arrays, and path arrays. Figure 6 This is a schematic diagram illustrating the arrangement of exemplary protrusions and light-transmitting areas. Figure 6 In an exemplary configuration, multiple protrusions 20 have set row spacing and column spacing to form an array arrangement. Figure 14 This is another schematic diagram illustrating an exemplary arrangement of protrusions and light-transmitting areas. Figure 14 In the exemplary configuration, multiple protrusions 20 form four sets of path arrangements through a set path. Figure 15 This is another exemplary schematic diagram of the arrangement of protrusions and light-transmitting areas. Figure 15 In an exemplary configuration, multiple protrusions 20 are arranged in two sets of ring arrays.

[0071] exist Figure 1 , Figure 2 and Figure 3 In the example, the light source 310 used in the handheld head care device can be selected, and the wavelength of the light emitted by these light sources 310 is a set wavelength, including 290nm~400nm, 405nm~470nm, 620nm~670nm or 670nm~1600nm.

[0072] Generally speaking, a normal hair cycle consists of three phases: the anagen (growth) phase (2-6 years), the catagen (transitional) phase (2-3 weeks), and the telogen (resting) phase (3-4 months). Light of a specific wavelength has a biostimulatory effect on hair follicle cells. This light can penetrate the scalp surface and exert its "photobiological regulatory effect," thereby improving the microenvironment around the hair follicles.

[0073] Light with wavelengths between 290nm and 400nm is classified as long-wave and medium-wave ultraviolet light. Long-wave ultraviolet (UVA) may exert its effects through mechanisms including inhibiting DNA replication, cell proliferation, inflammatory responses, and suppressing T cell function and migration. UVA with wavelengths between 320nm and 400nm can affect the local immune system by acting on T cells, B cells, antigen-presenting cells, and mast cells in the skin through various mechanisms. Because UVA has good skin penetration, reaching the depth of hair follicles, it can better reach inflamed areas when used in the treatment of alopecia areata, thus achieving a therapeutic effect. Medium-wave ultraviolet (UVB) can modulate the local skin's immune environment, inducing keratinocytes to adjust the expression of various cytokines, such as IL-6, IL-7, IL-10, IL-12, and IL-15. In particular, the expression of the cytokine IL-10 in the skin is significantly upregulated after UVB irradiation, a mechanism induced by DNA damage caused by UVB irradiation. Studies have found that UVB irradiation can inhibit the expression of NF-κBp65 protein, suggesting the existence of another pathway by which UVB irradiation of human primary keratinocytes induces NF-κBp65 activation, which is closely related to its anti-inflammatory and immunomodulatory activities. Therefore, UVB has a strong immunomodulatory effect, mainly affecting hair follicles by inducing T cell apoptosis and regulating the immune response within the radiation range.

[0074] Light with wavelengths between 620nm and 670nm is red light. Red light has a wavelength close to that of low-level laser therapy (LLLT) and exhibits similar photochemical effects, such as photodissociation of NO bound in CCO. Blue light, mediated by copper ions, can photodissociate nitrite on the skin surface to generate NO. The photodissociation of NO can induce the influx of reactive oxygen species, thereby driving the electron transport chain to produce ATP, the energy required for cellular activity, and improving tissue oxygenation. Studies have shown that 655nm red light can activate the Wnt / β-catenin signaling pathway. Wnt signaling is one of the key signals in hair follicle growth and development; abnormalities in this pathway play an important role in the pathogenesis of androgenetic alopecia. Red light can stimulate hair growth by upregulating the Wnt / β-catenin signaling pathway. Furthermore, red light can promote angiogenesis, improve blood circulation and microcirculation in bald areas, reduce whole blood viscosity, enhance erythrocyte deformability, improve immunity, and promote hair growth. The hair regrowth mechanism may also be related to the increased blood oxygen content in epidermal microvessels after phototherapy. Experiments have shown that red light irradiation significantly increases blood oxygenation in the same analytical area. Accelerated microvascular blood flow may indicate enhanced nutrient supply to hair follicle tissue.

[0075] Blue light, with wavelengths between 405nm and 470nm, can prolong the growth phase of isolated hair follicles by interacting with photoreceptors OPN2 (rhodopsin) and OPN3 (neuropsin) in the epidermis and hair follicles during the growth phase. OPN3 is also a key sensor in melanocytes; stimulation with blue light can activate microphthalmia-associated transcription factor (MITF), thereby increasing pigment gene expression, causing melanin-producing enzyme aggregation, and resulting in darker and thicker hair. Blue light can also activate endogenous porphyrins (mainly coprophyrin III) in the pilosebaceous unit, a bacterial metabolite, into high-energy unstable porphyrins. These porphyrins then combine with triple-state oxygen to form unstable singlet oxygen. This singlet oxygen combines with compounds on the cell membrane, damaging the cell membrane and leading to bacterial death, thus exerting an anti-inflammatory effect and improving the scalp environment.

[0076] Infrared light can improve local blood circulation, metabolism, and nutrition. Infrared phototherapy is divided into far-infrared and near-infrared phototherapy: Far-infrared therapy uses wavelengths of 2000nm to 80000nm, mainly improving blood circulation, especially microcirculation, through biothermal effects. Near-infrared light has a wavelength of less than 1600nm. Existing infrared LEDs emit wavelengths in the near-infrared region. The biological effect of infrared radiation is mainly thermal; after being absorbed by the body, it causes an increase in body temperature, local or systemic vasodilation, increased blood flow, and promotes metabolism and cell proliferation, resulting in anti-inflammatory and analgesic effects.

[0077] If needed, the handheld head care device can be equipped with one or any combination of the above-mentioned light sources 310, and the type of light source 310 can be switched when needed.

[0078] Figure 5 This is a schematic diagram of a user using a handheld hair care device. The diagram shows multiple combing paths with the same orientation in the same combing direction. The handheld hair care device determines these multiple combing paths based on the user's combing movements. Figure 1 , Figure 2 and Figure 3 The components are the same, Figure 6 The handheld head care device uses the protrusion 20 to part the user's hair 502, and the combing path has path characteristics. Among the multiple combing paths with the same orientation determined based on the user's combing activity in any direction, the path characteristics of any combing path include: parting the user's hair 502 through the protrusion 20 and exposing the scalp area 500, and at least part of the light emitted by the light source 310 can illuminate at least part of the exposed scalp area 500.

[0079] exist Figure 6In the example, the front cover 11 is circular, and multiple protrusions 20 are arranged in a rectangular array. There are light-transmitting areas 114 on the circumferential side of the protrusions 20. The light-transmitting areas 114 are circular, and a group of light sources 310 are arranged around the outer side of the outer protrusions 20. The light sources 310 can emit light to the outside through these circular light-transmitting areas 114. When the user uses the device to comb his hair, multiple combing paths with the same orientation are formed. These combing paths include the first combing path 101, the second combing path 102, and the third combing path 103 shown in Figure 6, as well as other combing paths in the same direction not shown in the figure. It is evident that these combing paths are aligned with the combing direction 001, and these combing paths ensure that combing activities in any direction can part the user's hair 502 through the protrusion 20 and expose the scalp area 500. The exposed scalp area 500 can receive light in the light-transmitting area 114 immediately following the circumferential side of the protrusion 20. This light consists of at least a portion of the light emitted by the light source 310. Specifically, the hair 502 can be parted first through the protrusion 20 to form a hair part 501, thereby exposing the scalp area 500. Alternatively, a portion of the light source 310 can first illuminate the hair 502 on the outermost side, and then the protrusion 20 can part the hair 502 to expose the scalp area 500.

[0080] exist Figure 7 In the example, the light source 310 is located in the second through hole 1211, and the light emitted by it can be emitted to the scalp area 500 through the light-transmitting area 114. At the same time, the surrounding area of ​​the light-transmitting area 114 is a non-light-transmitting area 115 to ensure the directionality of the light.

[0081] exist Figure 8 In the example, the arrangement of the protrusion 20 and the light-transmitting area 114 is designed so that, based on any combing direction 001, after the protrusion 20 pushes open the hair slit 501, there may be a light irradiation area 311 that follows immediately or a light irradiation collection area 3110 composed of light irradiation areas 311 emitted from multiple light-transmitting areas 114.

[0082] exist Figure 9In the example, the light emitted by these light sources 310 illuminates the scalp area 500, forming a roughly circular light irradiation area 311. It can be seen that the width of the projection area 2001 of the protrusion 20 on the scalp area 500 affects the gap distance of the parted hair 501. That is, a larger protrusion 20 can achieve the effect of parting a wider parted hair 501. However, due to limitations in the size of the device and the number and position of the light sources 310, the size of the protrusion 20 needs to be controlled and designed. As an example, when the parted hair 501 is parted and the scalp area 500 is exposed, the light irradiation area 311 of the light source 310 needs to ensure that at least part of the exposed scalp area 500 is illuminated to ensure the effectiveness of the light irradiation. However, this does not mean that the light not irradiating the exposed scalp area 500 is ineffective; it is blocked by some hair 502 and is considered to have suffered some light loss when irradiating the scalp. Figure 9 The light irradiation area 311 that shines on the exposed scalp area 500 is defined as the effective light irradiation area 3111, while the light irradiation area blocked by the hair 502 is defined as the inefficient light irradiation area 3112. It can be understood that in order to ensure that as many effective light irradiation areas 3111 as possible are located in the exposed scalp area 500 after the protrusion 20 pushes aside the hairline 501, the arrangement and number of the light-transmitting area 114 and the protrusion 20 need to be optimized. For example, in Figure 12, in the X-axis direction, multiple light-transmitting areas 114 between two adjacent protrusions 20 form a "triangular" light irradiation collection area 3110 as shown in the figure, thereby effectively increasing the area of ​​the effective light irradiation area 3111 after the hair slit 501 is opened, thus improving the product's performance. In the X-axis direction, multiple light-transmitting areas 114 between two adjacent protrusions 20 also form a "long-waisted" light irradiation collection area 3110 as shown in the figure. Similarly, as mentioned above, the designed arrangement and number of light-transmitting areas 114 and protrusions 20 can improve the performance. In other words, when all areas of the shell surface 111, excluding the area occupied by the protrusions 20, are light-transmitting areas 114, it can be ensured that the effective light irradiation area 3111 is maximized. That is, after the hair slit 501 is opened, the exposed scalp area 500 can be completely covered by the light emitted by the light source 310. However, it is important to note that the design of the light-transmitting area 114, which has the largest area, is not necessarily the optimal solution. The effective illumination of the light-transmitting area 114 onto the exposed scalp area 500 depends on the ability of the protrusion 20 to part the hair parting 501. Therefore, the arrangement and number of the protrusion 20 and the light-transmitting area 114 become key factors in improving the effectiveness of the device. In this disclosed solution, the user can achieve the effect of parting the hair parting 501 during combing activities in any direction, and is immediately illuminated by the light source 310 after parting the hair parting 501.

[0083] exist Figure 6 In the arrangement, the light source 310 and the protrusions 20 are designed based on the circular front cover plate 11. The protrusions 20 are generally arranged in a rectangular array. There is a ring of light-transmitting areas 114 around the periphery of the protrusions 20. There are at least two light-transmitting areas 114 between two adjacent protrusions 20. In the X-axis direction, the multiple light-transmitting areas 114 between two adjacent protrusions 20 form a "triangular" light irradiation collection area 3110 and a "long waist" light irradiation collection area 3110. This makes the device have a better number of light-transmitting areas 114, while also having a more reasonable protrusion 20 layout.

[0084] exist Figure 11 In the arrangement, the light source 310 and the protrusions 20 are designed based on the elongated front cover plate 11. The protrusions 20 are arranged in three vertical columns along the Y-axis, and each column of protrusions 20 has an adjacent light-transmitting area 114. Simultaneously, two more vertical columns of light-transmitting areas 114 are arranged around the periphery of the vertically arranged protrusions 20. When a user uses the device to comb their hair, different combing activities can have corresponding combing paths. In one combing direction 001, the combing path may include the fourth combing path 104 shown in Figure 11; in another combing direction 001, the combing path may include the fifth combing path 105 shown in Figure 11; and in yet another combing direction 001, the combing path may include the sixth combing path 106 shown in Figure 11. The outermost ring is formed by the protrusions 20 and the light-transmitting areas 114.

[0085] exist Figure 12 In the arrangement, with Figure 6 The arrangement is different in that the light source 310 and the protrusion 20 are designed based on the circular front cover plate 11, wherein the protrusion 20 does not have a ring of light-transmitting area 114 around its perimeter. Such a layout is also considered reasonable and effective.

[0086] exist Figure 13 In the arrangement, with Figure 6 Unlike other designs, the light source 310 and the protrusions 20 are designed based on a circular front cover plate 11, wherein, in the X-axis and Y-axis directions, there is a closely arranged light-transmitting area 114 between two adjacent protrusions 20. This design can be considered as a comparison with... Figure 6 The layout is not ideal, but it is still reasonable and effective in terms of lighting to meet the needs of different users.

[0087] exist Figure 14 In the arrangement, with Figure 6The arrangement differs from the previous one. The light source 310 and the protrusion 20 are designed based on a circular front cover plate 11. The protrusion 20 adopts a path array to present a symmetrical arrangement in four directions. Correspondingly, the inner side of the protrusion 20 also adopts a path array to present a symmetrical arrangement of light-transmitting areas 114 in four directions. This provides a richer layout design scheme for the device and is also considered effective.

[0088] exist Figure 15 In the arrangement, with Figure 6 Unlike other designs, the light source 310 and the protrusion 20 are designed based on a circular front cover plate 11. The protrusion 20 and the light-transmitting area 114 are arranged in a ring array. The ring-arranged light-transmitting area 114 can be understood as having a continuous and circular light path. This ensures that light can reach the exposed scalp area 500 during combing activities in any direction, providing a more novel layout design for the device.

[0089] It should be pointed out that, Figure 6 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 The arrangement is exemplary, and if necessary, the protrusion 20 and the light-transmitting area 114 can have a richer or better layout design.

[0090] In some implementations, among multiple combing paths with the same orientation, at least one combing path is characterized by having at least a portion of a light-transmitting area 114 between at least a portion of adjacent protrusions 20 in the combing path. This design allows the user to experience less-than-ideal light exposure to the exposed scalp area 500 during combing activities. However, this approach also provides more flexible functional design margins for other areas of the shell wall 111 to meet implementation possibilities beyond light exposure effectiveness. For example, some areas may meet the requirement of light exposure to the exposed scalp area 500, while other areas may be configured to provide microcurrent stimulation to the scalp area 500, thus offering richer design possibilities for the device.

[0091] Figure 10The relationship between the area between two adjacent protrusions and the area of ​​the effective light-transmitting collection area is shown. Among multiple combing paths with the same orientation, the path characteristics of at least one combing path include: the area of ​​the path region 202 between any two adjacent protrusions 20 in the combing path is S1, and the area of ​​the effective light-transmitting collection area is S2, where S1 and S2 satisfy the following condition: S2 ≥ S1 × 0.1. In the diagram, the area between two adjacent protrusions 20 of the device is defined as the path region 202. Its area is defined by the relative extension of the protrusions 20 and their outer contours 201. Within this path region 202, the light-transmitting area 114 has an effective light-transmitting area 1141 covered by the path region 202 and an inefficient light-transmitting area 1142 outside the path region 202. The sum of the areas of the effective light-transmitting areas 1141 within the path region 202 constitutes the area S2 of the effective light-transmitting area, while the area of ​​the path region 202 is S1. When the condition S2 ≥ S1 × 0.1 is met, the effectiveness of light energy illuminating the exposed scalp area 500 can be ensured during each hair-combing activity of the user. Furthermore, S2 = S1 is considered to represent the highest light energy.

[0092] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A handheld head care device, characterized in that, include: The housing, including the housing surface wall with a light-transmitting area; Multiple light sources are provided and distributed within the housing; The protrusions are provided in multiple ways, and each protrusion has a light-transmitting area on at least one side in the circumferential direction; The plurality of the protrusion arrays are arranged in a manner including at least one or any combination of a circular array, a rectangular array, and a path array. The protrusion can part the user's hair and expose the scalp area based on the combing activity. The light emitted by the light source shines on the scalp area through the light-transmitting area, forming a light-irradiated area. The light-irradiated area at least partially irradiates the exposed scalp area.

2. The hand-held head care device as claimed in claim 1, characterized in that Of the multiple protrusions arranged in an array, the outermost protrusions are located inside the light-transmitting area.

3. The handheld head care device according to claim 1, characterized in that, The light-transmitting area is circular, and each light-transmitting area corresponds to one of the light sources.

4. The handheld head care device according to claim 1, characterized in that, Among the plurality of protrusions arranged in a rectangular array, the light-transmitting area is located on the circumferential side of the protrusion, and a group of light sources arranged around the outer side of the outer protrusion is arranged.

5. The handheld head care device according to claim 1 or 4, characterized in that, There are at least two light-transmitting areas between two adjacent protrusions, and in the X-axis direction, the multiple light-transmitting areas between two adjacent protrusions form a "triangular" light irradiation collection area; And / or, the multiple light-transmitting areas between two adjacent protrusions constitute a "long-waisted" light irradiation collection area.

6. The handheld head care device according to claim 1, characterized in that, The protrusions are arranged in vertical columns along the Y-axis, and each column of protrusions has an adjacent light-transmitting area. Two more columns of light-transmitting areas are arranged around the periphery of the vertically arranged protrusions.

7. The handheld head care device according to claim 1, characterized in that, In the X-axis and Y-axis directions, there is a light-transmitting area arranged adjacent to each other between two protrusions.

8. The handheld head care device according to claim 1, characterized in that, Both the protrusion and the light-transmitting area are arranged in a path array that is symmetrically arranged in four directions, and the light-transmitting area is located inside the protrusion.

9. The handheld head care device according to claim 1, characterized in that, Both the protrusions and the light-transmitting areas are arranged in a ring array, and the light path of the light-transmitting areas arranged in the ring array is circular and continuous.

10. The handheld head care device according to claim 1, characterized in that, The light-transmitting area is annular, and each annular light-transmitting area corresponds to a plurality of light sources arranged in a ring array.

11. The handheld head care device according to claim 1, characterized in that, Except for the light-transmitting area, the rest of the shell surface is a non-light-transmitting area.

12. The handheld head care device according to any one of claims 1-4, characterized in that, The light source is an LED light source or a laser light source.

13. The handheld head care device according to claim 12, characterized in that, The wavelength of the light emitted by the light source is a set wavelength, which includes 290nm~400nm, 405nm~470nm, 620nm~670nm or 670nm~1600nm.

14. The handheld head care device according to any one of claims 1-4, characterized in that, The protrusion is at least partially erect on the shell surface.

15. The handheld head care device according to any one of claims 1-4, characterized in that, The handheld head care device is a hair growth device.

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