Handheld head care device

Abstract

The utility model discloses handheld head nursing equipment, and relates to the technical field of optics. The handheld head care device includes a housing, a light source, a protrusion, and a first sensor. The shell comprises a shell surface wall with a light-transmitting area; the plurality of light sources are distributed in the shell; a plurality of bulges are arranged, and at least one side in the circumferential direction is provided with a light-transmitting area; the first sensor is used for detecting the distance difference between the first sensor and the hair. When the distance difference between the first sensor and the hair is within the threshold activation distance, the light source is turned on or turned off based on the distance difference between the first sensor and the hair, so that the output state of the light source is ensured to be controllable, the use condition that light does not enter eyes is met, the safety risk of eye injury is avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to a handheld head care device. Background Art

[0002] It is recognized that irradiating the scalp with light sources of specific wavelengths is beneficial. For example, red light with a wavelength of 650nm has been shown to be used to stimulate hair follicles to achieve the effect of hair growth or preventing hair loss.

[0003] The handheld head care device can provide care for the user's head, including hair growth, hair loss prevention, sterilization, and oil secretion control, by arranging a light source that can emit a specific wavelength as mentioned above on the device body.

[0004] This type of handheld head care device is convenient and easy to use, and also has certain care effects, so it is more popular.

[0005] The light generated by handheld head care devices generally needs to have a high output power to reach deep into the skin, and this type of light is considered to be unbearable for the human eye. Once it enters the eyes, it will cause damage to the eyes. The handheld head care devices in the prior art cannot effectively protect the eyes, resulting in frequent light entering the eyes during use, and cannot provide users with safe devices, resulting in a poor user experience. Utility Model Content

[0006] The utility model aims to provide a handheld head care device, which can better protect eyes and improve the safety of the handheld head care device.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] Handheld head care device, including:

[0009] The shell comprises a shell surface wall having a light-transmitting area;

[0010] A plurality of light sources are provided and distributed in the housing;

[0011] A protrusion, wherein a plurality of protrusions are provided, and at least one side of the protrusion in the circumferential direction has the light-transmitting area, the protrusion can part the user's hair and expose the scalp area based on the combing activity, and the light source can emit light to the exposed scalp area through the light-transmitting area;

[0012] a first sensor, used to detect a distance difference between the first sensor and the hair, the first sensor being communicatively connected to the light source;

[0013] Wherein, when the distance difference between the first sensor and the hair is within the threshold activation distance, based on the distance difference between the first sensor and the hair, the light source is turned on or off.

[0014] As an alternative to the handheld head care device, it further includes a feedback component, which is communicatively connected to the light source, and the feedback component is used to indicate the on or off state of the light source.

[0015] As an alternative to the handheld head care device, the feedback component includes an auditory feedback member and / or a tactile feedback member.

[0016] As an alternative to the handheld head care device, when the feedback component includes the auditory feedback member, the auditory feedback member includes a buzzer;

[0017] When the feedback component includes the tactile feedback member, the tactile feedback member includes a vibration motor.

[0018] As an alternative to the handheld head care device, the first sensor is disposed in the middle area of the plurality of protrusions; or, a plurality of the first sensors are provided, and the plurality of first sensors are distributed in different areas of the plurality of protrusions.

[0019] As an alternative to the handheld head care device, it further includes a second sensor, which is used to detect the temperature and humidity of the user's scalp.

[0020] As an alternative to the handheld head care device, an installation groove is provided on the housing; the protrusion includes:

[0021] A base, which has an accommodation space therein;

[0022] An elastic member, arranged in the accommodation space;

[0023] A telescopic portion, which partially extends into the accommodation space and abuts against the end of the elastic member, and the telescopic portion is telescopically connected to the base through the elastic member;

[0024] Wherein, at least a part of the base is assembled in the installation groove, and at least a part of the telescopic portion protrudes from the housing surface wall and is arranged upright.

[0025] As an alternative to the handheld head care device, it further includes a circuit board, and the light source is electrically connected to the circuit board.

[0026] As an optional solution of the handheld head care device, a communication module is also included, and the communication module is electrically connected to the circuit board. The handheld head care device can be connected to the smart terminal through the communication module.

[0027] As an optional solution of the handheld head care device, a rechargeable battery is further included. The rechargeable battery is arranged in the shell and is used to provide power to the light source and the first sensor.

[0028] As an optional solution of the handheld head care device, a plurality of the protrusions are arranged in an array, and the array arrangement includes at least one of a circular array, a rectangular array and a path array, or any combination thereof.

[0029] As an optional solution of the handheld head care device, the handheld phototherapy device has multiple combing paths with the same orientation based on the user's combing activities. In any of the combing paths, the protrusions can be used to push aside the user's hair and expose the scalp area, and at least part of the light emitted by the light source can be irradiated on at least part of the exposed scalp area.

[0030] To achieve this purpose, the utility model also adopts the following another technical solution:

[0031] Handheld head care device, including:

[0032] The shell comprises a shell surface wall having a light-transmitting area;

[0033] A plurality of light sources are provided and distributed in the housing;

[0034] A protrusion, wherein a plurality of protrusions are provided, and at least one side of the protrusion in the circumferential direction has the light-transmitting area, the protrusion can part the hair and expose the scalp area based on the user's combing activity, and the light source can emit light to the exposed scalp area through the light-transmitting area;

[0035] a first sensor, used to detect a distance difference between the first sensor and the hair, the first sensor being communicatively connected to the light source;

[0036] Control circuit;

[0037] Wherein, the control circuit adjusts the output power of the light source based on the distance difference between the first sensor and the hair.

[0038] As an optional solution of the handheld head care device, when the distance difference between the first sensor and the hair is within a threshold activation distance, as the distance difference between the first sensor and the hair increases, the output power of the light source increases, and as the distance difference between the first sensor and the hair decreases, the output power of the light source decreases; when the distance difference between the first sensor and the hair is outside the threshold activation distance, the light source is turned off.

[0039] As an optional solution of the handheld head care device, it also includes: a feedback component, which is communicatively connected with the light source and is used to indicate the change state of the output power of the light source.

[0040] As an optional solution of the handheld head care device, the feedback component includes an auditory feedback element and / or a tactile feedback element.

[0041] As an optional solution of the handheld head care device, when the feedback component includes the auditory feedback element, the auditory feedback element includes a buzzer;

[0042] When the feedback component includes the tactile feedback element, the tactile feedback element includes a vibration motor, and a vibration frequency of the vibration motor can be changed based on a change in the output power of the light source.

[0043] As an optional solution of the handheld head care device, a second sensor is also included, and the second sensor is used to detect the temperature and humidity of the user's scalp.

[0044] As an optional solution of the handheld head care device, a plurality of the protrusions are arranged in an array, and the array arrangement includes at least one of a circular array, a rectangular array and a path array, or any combination thereof.

[0045] As an optional solution of the handheld head care device, the handheld phototherapy device has multiple combing paths with the same orientation based on the user's combing activities. In any of the combing paths, the protrusions can be used to push aside the user's hair and expose the scalp area, and at least part of the light emitted by the light source can be irradiated on at least part of the exposed scalp area.

[0046] Beneficial effects of the utility model:

[0047] The handheld head care device provided by the present utility model, when in use, separates the hair by means of protrusions and exposes the scalp area, and the light source irradiates the exposed scalp area through the light-transmitting area to achieve care. To prevent the user's eyes from being irradiated by the light of the light source during the use of the handheld head care device, the distance difference between the first sensor and the hair is detected by the first sensor to control the output state of the light source. Based on the distance difference between the first sensor and the hair, the light source can be turned on, turned off, or the output state of the output power can be adjusted. By obtaining the relative position relationship between the device and the hair through the first sensor, it is ensured that the output state of the light source is controllable and meets the usage condition that the light does not enter the eyes, avoiding the safety risk of eye injury and improving the user experience. Description of the Drawings

[0048] Figure 1 FIG. is an exemplary exploded view of the handheld head care device provided by the specific embodiment of the present utility model;

[0049] Figure 2 FIG. is an exemplary structural diagram of the assembled handheld head care device provided by the specific embodiment of the present utility model;

[0050] Figure 3 FIG. is an exemplary side sectional view of the handheld head care device in the held state provided by the specific embodiment of the present utility model;

[0051] Figure 4 FIG. is an exemplary side sectional view of the protrusion in the handheld head care device provided by the specific embodiment of the present utility model;

[0052] Figure 5 FIG. is an exemplary schematic diagram of a user using the handheld head care device provided by the specific embodiment of the present utility model;

[0053] Figure 6 FIG. is an arrangement schematic diagram of the protrusion and the light-transmitting area of the first handheld head care device provided by the specific embodiment of the present utility model;

[0054] Figure 7 FIG. is a structural schematic diagram of the light emitted by the light source irradiating the scalp area;

[0055] Figure 8 FIG. is a schematic diagram of the layout relationship between different hair combing paths and the light-transmitting unit when passing through the same protrusion;

[0056] Figure 9 FIG. is a schematic diagram of the regional position relationship of the light emitted by the light source irradiating the scalp area;

[0057] Figure 10It is a schematic diagram showing the area relationship between the area between two adjacent protrusions and the effective light-transmitting area provided by the specific embodiment of the present utility model;

[0058] Figure 11 It is a schematic layout diagram of the protrusions and the light-transmitting area of the second handheld head care device provided by the specific embodiment of the present utility model;

[0059] Figure 12 It is a schematic layout diagram of the protrusions and the light-transmitting area of the third handheld head care device provided by the specific embodiment of the present utility model;

[0060] Figure 13 It is a schematic layout diagram of the protrusions and the light-transmitting area of the fourth handheld head care device provided by the specific embodiment of the present utility model;

[0061] Figure 14 It is a schematic layout diagram of the protrusions and the light-transmitting area of the fifth handheld head care device provided by the specific embodiment of the present utility model;

[0062] Figure 15 It is a schematic layout diagram of the protrusions and the light-transmitting area of the sixth handheld head care device provided by the specific embodiment of the present utility model.

[0063] In the figure:

[0064] 001 - Hair combing direction;

[0065] 101 - First hair combing path, 102 - Second hair combing path, 103 - Third hair combing path, 104 - Fourth hair combing path, 105 - Fifth hair combing path, 106 - Sixth hair combing path;

[0066] 11 - Front cover plate, 111 - Shell surface wall, 112 - Positioning post, 113 - First through hole, 114 - Light-transmitting area, 1141 - Effective light-transmitting area, 1142 - Low-efficiency light-transmitting area, 115 - Non-light-transmitting area;

[0067] 12 - Middle frame, 121 - Middle frame end, 1211 - Second through hole, 1212 - Installation groove, 1213 - Front surface wall of the middle frame, 122 - Middle frame holding part;

[0068] 13 - Back plate, 131 - Back plate end, 1311 - Reinforcing rib, 132 - Back plate holding part, 133 - Control button;

[0069] 20 - Protrusion, 201 - Outer edge contour, 202 - Path area, 2001 - Projection area of the protrusion, 21 - Telescopic part, 211 - End, 22 - Base, 221 - Accommodation space, 23 - Elastic part;

[0070] 300-circuit board, 310-light source, 311-light irradiation area, 3110-light irradiation collection area, 3111-light irradiation effective area, 3112-light irradiation inefficient area;

[0071] 400-Rechargeable battery;

[0072] 500-scalp area, 501-hair parting, 502-hair;

[0073] 61 - first sensor, 62 - second sensor. DETAILED DESCRIPTION

[0074] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0075] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] Figure 1 is an exemplary exploded view of a handheld head care device, Figure 2 is an exemplary structural diagram of the handheld head care device assembly. Figure 1 and Figure 2 In the example, the handheld head care device includes a shell, a light source 310 and a protrusion 20. The shell includes a shell surface wall 111 having a light-transmitting area 114. A plurality of protrusions 20 are provided, and at least one side of the circumference of the protrusion 20 has the light-transmitting area 114. When the user is combing his hair or is being combed by others for hair care, these protrusions 20 can part the hair 502 based on the combing activity, and the light source 310 can emit light to the exposed scalp area 500 through the light-transmitting area 114.

[0077] 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 covering part of the middle frame 12, and its shell surface wall 111 has a light-transmitting area 114. On the shell surface wall 111, there are also positioning posts 112 for positioning the protrusion 20. The positioning posts 112 have a through hole one 113 that penetrates the front cover plate 11 axially to facilitate the assembly of the protrusion 20. The middle frame 12 has a middle frame end part 121 adapted to the front cover plate 11 and a middle frame holding part 122 that is integrally configured with the middle frame end part 121 and is located at the other end. On the front surface wall 1213 of the middle frame end part 121, there are arranged installation grooves 1212 and through holes two 1211 in an array. The installation grooves 1212 are used for adapting to the positioning connection of the protrusion 20, and the through holes two 1211 are adapted to the layout position of the light source 310 and allow the light of the light source 310 to pass through. Here, the opening position of the through hole two 1211 corresponds to the position of the light-transmitting area 114, so that the light can be emitted outward through the light-transmitting area 114 after passing through the through hole two 1211. The back plate 13 has an outer contour adapted to the middle frame 12, and it includes a back plate end part 131 adapted to be connected to the middle frame end part 121 and a back plate holding part 132 adapted to be connected to the middle frame holding part 122. Among them, after the middle frame 12 and the back plate 13 are connected, a relatively closed accommodation cavity can be formed to assemble electrical components, and a reinforcing rib 1311 for supporting electrical components is also formed inside the back plate end part 131.

[0078] The accommodation 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 middle frame end part 121 to facilitate the layout of a plurality of light sources 310. Figure 2 Among them, the light sources 310 can be arranged in an array exemplarily to correspond to the layout position of the through holes two 1211. When the circuit board 300 is assembled, the light sources 310 are at least partially located in the through holes two 1211, and their light-emitting ends can point to 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, and various electrical components inside the head care device can be controlled through the control circuit, such as controlling the turning on, turning off, and output power adjustment of the light sources 310. At the same time, it can also be used to control the processing of sensors, such as distance sensors, temperature and humidity sensors, etc.

[0079] Figure 3 It is an exemplary side sectional view of the handheld head care device in the held state. A control button 133 is also installed on the back plate holding part 132. The output end of the control button 133 is connected to the circuit board 300 to provide at least one kind of control feedback, such as controlling the turning on or off of the device, or long pressing the control button 133 can provide different light output modes, etc.

[0080] Figure 4FIG. 0 is an exemplary side cross-sectional view of a protrusion in a handheld head care device. The protrusion 20 may be composed of an elastic member, which includes a base 22, an elastic member 23, and a telescopic portion 21. There is an accommodation space 221 inside the base 22. The elastic member 23 can provide elastic telescoping in the axial direction of the protrusion 20. For example, the elastic member 23 may be a spring. The elastic member 23 is assembled in the accommodation space 221, with one end abutting against the bottom wall of the accommodation space 221 and the other end abutting against the end of the telescopic portion 21. The telescopic portion 21 realizes force-induced telescoping along its axial direction through the elastic modulus of the elastic member 23. Specifically, both the base 22 and the telescopic portion 21 may be columnar structures with a circular cross-section. When they are assembled with the housing, the base 22 is adaptively and positionally connected in the installation groove 1212. After the front cover 11 and the middle frame 12 are connected, the telescopic portion 21 can at least partially penetrate through the first through hole 113 to be exposed outside the housing. After multiple protrusions 20 are assembled, the ends 211 can all be formed on the same horizontal plane, and the telescopic portion 21 has an elastic telescoping amount. In the use state, based on the elastic force, during the hair combing process, the ends 211 of each protrusion 20 can effectively fit the scalp and push aside the hair 502 after being stressed, which is more conducive to the light source 310 irradiating light on the scalp area 500.

[0081] In Figure 1 、 Figure 2 and Figure 3 examples of , the handheld head care device further includes a first sensor 61. The first sensor 61 is used to detect the distance difference between it 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 the threshold activation distance, based on the distance difference between the first sensor 61 and the hair 502, the light source 310 is turned on or off.

[0082] The first sensor 61 may be an optical sensor, an infrared sensor, or an ultrasonic sensor, etc. Taking the optical sensor as an example, the time of reflection of the light pulse emitted by the object is measured, and then the distance between it and the object is deduced. In this embodiment, the first sensor 61 is used to measure the distance difference between it and the hair 502. The first sensor 61 can be assembled to the outer surface wall, inner surface wall, or the surface wall of the middle frame 12 of the front cover 11. To further ensure the accuracy of the sensor's distance measurement, in this embodiment, it is preferably that the first sensor 61 is assembled to the inner surface wall of the front cover 11. The first sensor 61 may be an optical sensor, and the corresponding assembly to the inner surface wall is transparent to allow the first sensor 61 to better emit light pulses outward. At the same time, the front cover 11 also provides protection for the first sensor 61.

[0083] In an exemplary configuration, the threshold activation distance can be a set value. The turning on and off of the light source 310 can be regarded as two independent actions. That is, the threshold activation distance for turning on the light source 310 and the threshold activation distance for turning off the light source 310 can be the same or different. Only the state condition of the light source 310 needs to be set. For example, when the control button 133 is turned on, the device is powered on and in standby, and the light source 310 is in the off state. The set proximity threshold activation distance is 3 cm. When the user holds the device and approaches the head, the first sensor 61 detects whether the distance difference between it and the hair 502 is less than 3 cm. If it is less, the light source 310 is turned on. Another example is that when using the device, the light source 310 is in the on state. The set threshold activation distance when moving away is 5 cm. When the device is held and moved away from the head, the first sensor 61 detects whether the distance difference between it and the hair 502 is greater than 5 cm. If it is greater, the light source 310 is turned off. The user can control the light source 310 based on the corresponding approaching and moving away actions. The purpose of doing this is not only to ensure the energy utilization efficiency of the light, but also to bring a better user experience. It should be noted that in general usage habits, when the control button 133 is turned on, the light source 310 is in the off state. The purpose of doing this is to ensure that the eyes cannot directly look at the light or observe the light in this state. For the light source 310 with a relatively high output power, this undoubtedly provides an effective safety prevention measure. In cooperation with this, when approaching the head and turning on the light source 310 within the preset threshold activation distance, the light irradiation function can be realized on the premise of ensuring that the light does not enter the eyes. Similarly, when holding the device and moving away from the head, turning off the light source 310 at the preset threshold activation distance can effectively prevent the light from entering the eyes.

[0084] If necessary, a feedback component (not shown in the figure) can also be installed on the device. The feedback component is communicatively connected to the light source 310. The feedback component is used to indicate the on or off state of the light source 310. Taking the initial use as an example, when the control button 133 is turned on, the light source 310 is in the off state. Then the device gradually approaches the head and is detected at a threshold activation distance of 3 cm, and the light source 310 is turned on. At the same time, since the device is in a position close to the head and the user's eyes cannot observe the light, the feedback component is turned on and provides feedback to the user in the form of tactile or auditory feedback that the light source 310 is in the on state. That is, the state of the light source 310 is associated with the feedback component to achieve a reminder to the user. The feedback component can be a buzzer, a vibration motor, or both if necessary, or it can include others. Correspondingly, when the user is in the usage state, the device moves away from the head and is detected at a threshold activation distance exceeding 5 cm, and the light source 310 is turned off. At the same time, the feedback component associated with the light source 310 is turned on again and provides feedback to the user in the form of tactile or auditory feedback that the light source 310 is in the off state. The purpose of doing this is to ensure that the user can obtain the real-time state through tactile or auditory feedback on the premise that the current state of the light source 310 cannot be observed.

[0085] In some configurations, in addition to being turned on and off, the state of the light source 310 can also be a change in output power. For example, the first sensor 61 is used to detect the distance difference between it 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 a control circuit. When the distance difference between the first sensor 61 and the hair 502 is within the threshold activation distance, as the distance difference between the first sensor 61 and the hair 502 increases, the output power of the light source 310 increases, and as the distance difference between the first sensor 61 and the hair 502 decreases, the output power of the light source 310 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 turned off. Taking the initial use of the user as an example, when the user turns on the control button 133, the light source 310 is in the off state, and then the device gradually approaches the head and is detected at a threshold activation distance of 3 cm. The light source 310 is turned on, and at this time, the output power of the light source 310 is 7 mW. At the same time, the feedback component is turned on and provides feedback to the user in the form of tactile or auditory feedback that the light source 310 is in the on state. As it continuously approaches the hair 502, the output power of the light source 310 gradually decreases until the detection distance is 0 cm, and the output power of the light source 310 drops to 5 mW. During the process of the output power changing, the feedback component can change according to the change in the output power, so as to provide more accurate information feedback to the user. For example, the device realizes tactile vibration feedback through a vibration motor. During the process of the output power gradually decreasing, the vibration frequency of the vibration motor can decrease synchronously. It should be noted here that the output power of the light source 310 decreases as the distance difference continuously decreases, in order to ensure that the light energy irradiated to the scalp area 500 remains relatively stable, thereby providing a better use experience. Correspondingly, when the device moves away from the head, as the distance difference continuously increases, the output power of the light source 310 gradually increases from 5 mW. During this period, the vibration frequency of the vibration motor can increase synchronously. When the distance difference reaches 5 cm, the output power reaches 10 mW. When it exceeds 5 cm, the light source 310 is turned off.

[0086] In some configurations, Figure 1 、 Figure 2 and Figure 3The illustrated handheld head care device may further include a second sensor 62 for detecting the temperature and humidity of the user's scalp, and its assembly position may be similar to that of the first sensor 61. Exemplarily, the handheld head care device includes a communication module electrically connected to the circuit board 300. The handheld head care device can be communicatively connected to the 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 (such as a mobile phone) through the communication module for presentation, enabling the user to obtain head-related information in a timely manner to better adjust subsequent care plans.

[0087] In some configurations, a plurality of protrusions 20 are arranged in an array, and the array arrangement includes at least one or any combination of a circular array, a rectangular array, and a path array. Figure 6 It is a schematic diagram of the arrangement of exemplary protrusions and light-transmitting regions. In Figure 6 the exemplary configuration of, a plurality of protrusions 20 have a set row pitch and column pitch to form an array arrangement. Figure 14 It is another schematic diagram of the arrangement of exemplary protrusions and light-transmitting regions. In Figure 14 the exemplary configuration of, a plurality of protrusions 20 form a path arrangement in four groups through a set path. Figure 15 It is yet another schematic diagram of the arrangement of exemplary protrusions and light-transmitting regions. In Figure 15 the exemplary configuration of, a plurality of protrusions 20 form a two-group circular array arrangement.

[0088] In Figure 1 , Figure 2 and Figure 3 In the examples of, the light sources 310 used in the handheld head care device can be selected, and these light sources 310 emit light with a set wavelength, and the set wavelength includes 290nm - 400nm, 405nm - 470nm, 620nm - 670nm, or 670nm - 1600nm.

[0089] Generally speaking, a normal hair cycle includes three stages: anagen (2 - 6 years), catagen (2 - 3 weeks), and telogen (3 - 4 months). Light with a set wavelength has a biological stimulating effect on hair follicle cell tissues. The light with a set wavelength can penetrate the scalp surface layer and exert its "photobiomodulation effect", thereby improving the microenvironment around the hair follicles.

[0090] Light with wavelengths ranging from 290 nm to 400 nm is long-wave and medium-wave ultraviolet light. The possible mechanisms of action of long-wave ultraviolet (UVA) include inhibiting DNA replication, cell proliferation, inflammatory responses, as well as inhibiting the function and migration of T cells, etc. The wavelength of UVA is 320 - 400 nm, which can act on T cells, B cells, antigen-presenting cells, and mast cells in the skin through different mechanisms, thereby affecting the local immune system. Since UVA has good skin permeability and can reach the depth of hair follicles, it can better reach the inflammation infiltration site when used for alopecia areata treatment, thus playing a therapeutic role. Medium-wave ultraviolet (UVB) can regulate the local skin immune environment and induce keratinocytes to adjust the expression of various cytokines, such as IL-6, IL-7, IL-10, IL-12, IL-15, etc. Among them, the expression of the cytokine IL-10 in the skin is significantly up-regulated after UVB irradiation, and its mechanism is induced by DNA damage caused by UVB irradiation. Studies have found that UVB irradiation can inhibit the expression of the NF-κBp65 protein, suggesting that there may be another pathway for the activation of NF-κBp65 by UVB irradiation of human primary keratinocytes, which is closely related to its anti-inflammatory and immunomodulatory activities. Therefore, UVB has strong immunomodulatory effects and mainly affects hair follicles by inducing T cell apoptosis and regulating the immune response within the radiation range.

[0091] Light with wavelengths ranging from 620 nm to 670 nm is red light. The wavelength of red light is close to that of low-level light therapy (LLLT) and has similar photochemical effects, such as photodissociating NO bound in CCO. Blue light can photolyze nitrite on the skin surface to generate NO under the mediation of copper ions. After NO is photodissociated, it can cause the influx of reactive oxygen species, thereby driving the electron transport chain to generate ATP, the energy required for cell activities, and improving the oxygen activity of tissues. Studies have shown that red light with a wavelength of 655 m can activate the Wnt / β-catenin signaling pathway. The Wnt signal is one of the key signals in the growth and development of hair follicles, and the abnormality of its pathway plays an important role in the pathogenesis of androgenetic alopecia. Red light can stimulate hair growth by up-regulating the Wnt / β-catenin signaling pathway. In addition, red light can promote angiogenesis, improve blood circulation and microcirculation in the alopecia area; reduce the whole blood viscosity, enhance the deformability of red blood cells, improve the body's immunity, and promote hair growth. The hair growth mechanism may also be related to the increase in the oxygen content of epidermal microvessels after light therapy. Experiments have shown that after red light irradiation, the blood oxygen intensity in the same analysis area is significantly enhanced. The acceleration of microvascular blood flow may indicate an enhanced nutritional supplement for hair follicle tissue growth.

[0092] Light with a wavelength of 405 nm to 470 nm is blue light. Blue light can prolong the growth phase of hair follicles in vitro through its interaction with photoreceptors OPN2 (rhodopsin) and OPN3 (encephalopsin) in the epidermis and growing hair follicles. OPN3 is also a key sensor in melanocytes. After being stimulated by blue light, it can activate the microphthalmia-associated transcription factor (MITF), thereby increasing pigment gene expression, causing the aggregation of melanogenic enzymes, and darkening and thickening the hair. Blue light can also activate the endogenous porphyrin (mainly coproporphyrin III), a bacterial metabolite in the hair follicle sebaceous gland unit, into a high-energy unstable porphyrin, which then combines with triplet oxygen to form unstable singlet oxygen. The latter damages the cell membrane after binding to the compounds on the cell membrane, leading to bacterial death, thus playing an anti-inflammatory role and improving the scalp environment.

[0093] Infrared light can improve the blood circulation of local tissues, improve local metabolism, and nourish local tissues. Infrared light therapy is divided into far-infrared and near-infrared light therapies: Far-infrared therapy uses a wavelength of 2000 nm to 80000 nm and mainly improves blood circulation, especially microcirculation, through the biological heat effect. The wavelength of near-infrared light is less than 1600 nm. The emission wavelength of existing infrared LEDs is in the near-infrared region. The biological effect of infrared rays is mainly the heat effect. After being absorbed by the body, infrared rays cause an increase in body temperature, local or systemic vasodilation, an accelerated blood flow rate, promoting metabolism and cell proliferation, and having anti-inflammatory and analgesic effects.

[0094] If necessary, the handheld head care device can be equipped with one or any combination of the above-mentioned multiple light sources 310, and the type of the light source 310 can be switched when needed.

[0095] Figure 5 It is a schematic diagram of a user using a handheld head care device. In this layout schematic diagram, multiple combing paths with the same orientation in the same combing direction can be seen. The handheld head care device determines multiple combing paths with the same orientation based on the user's combing activity, similar to the components of Figure 1 、 Figure 2 and Figure 3 . The handheld head care device of Figure 6 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: the protrusion 20 parts the user's hair 502 to expose the scalp area 500, and at least part of the light emitted by the light source 310 can irradiate at least part of the exposed scalp area 500.

[0096] At Figure 6 ​In the example, the front cover 11 is circular, and the multiple protrusions 20 are arranged in a rectangular array. A light-transmitting area 114 is provided on the circumferential side of the protrusion 20, and the light-transmitting area 114 is circular. A group of light sources 310 arranged around the outer side of the peripheral protrusion 20 are arranged, and the light source 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, and these combing paths include the first combing path 101, the second combing path 102 and the third combing path 103 in Figure 6, and other combing paths in the same direction that are not shown in the figure. It can be seen that these combing paths are in the same direction as the combing direction 001, and these combing paths can ensure that combing activities in any direction can push aside the user's hair 502 through the protrusions 20 and expose the scalp area 500, and the exposed scalp area 500 can be irradiated by light in the light-transmitting area 114 immediately following the circumferential side of the protrusions 20, and these lights are composed of at least part of the light emitted by the light source 310. Specifically, the hair 502 can be pushed aside by the protrusions 20 to form the hair seam 501, and then the scalp area 500 is exposed, or part of the light source 310 can be used to irradiate the hair 502 at the outermost side first, and then the hair 502 is pushed aside by the protrusions 20 to expose the scalp area 500.

[0097] 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 areas of the light-transmitting area 114 are all non-light-transmitting areas 115 to ensure the directionality of the light.

[0098] exist Figure 8 In the example, the arrangement relationship between the protrusion 20 and the light-transmitting area 114 is designed, and it can be seen that, based on an arbitrary combing direction 001, after the protrusion 20 opens the hairline 501, there may be a light irradiation area 311 following it or a light irradiation collection area 3110 composed of light irradiation areas 311 emitted by multiple light-transmitting areas 114.

[0099] exist Figure 9In the example, after the light emitted by these light sources 310 irradiates the scalp area 500, a generally circular light irradiation area 311 is formed. It can be seen that the width of the protrusion projection area 2001 of the protrusion 20 in the scalp area 500 in the figure affects the gap distance of the separated hair parting 501. That is to say, when the protrusion 20 has a larger size, it can have the effect of separating a wider hair parting 501. However, limited by the size of the device and the arrangement quantity and position of the light sources 310, the size of the protrusion 20 needs to be controlled and designed. As an example, after the hair parting 501 is separated 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 it irradiates the exposed scalp area 500 to ensure the effectiveness of light irradiation. However, this does not mean that the light that does not irradiate the exposed scalp area 500 is ineffective. It is blocked by part of the hair 502 and is considered to have a certain degree of light loss when irradiating the scalp. Figure 9 In the light irradiation area 311 that irradiates the exposed scalp area 500 in it, it is defined as the light irradiation effective area 3111, and the light irradiation area blocked by the hair 502 is defined as the light irradiation inefficient area 3112. It can be understood that in order to ensure that after the protrusion 20 separates the hair parting 501, as many light irradiation effective areas 3111 as possible are located in the exposed scalp area 500, the arrangement position and quantity of the light transmission area 114 and the protrusion 20 need to be optimized and designed. For example, in Figure 12, in the X-axis direction, a part of multiple light transmission areas 114 between two adjacent protrusions 20 form a "triangle"-shaped light irradiation collection area 3110 as shown in the figure, so as to effectively increase the area of the light irradiation effective area 3111 after the hair parting 501 is separated, and thus improve the use effect of the product; in the X-axis direction, there is also a part of multiple light transmission areas 114 between two adjacent protrusions 20 that form a "long-waisted"-shaped light irradiation collection area 3110 as shown in the figure. Similarly to the foregoing, the arrangement position and quantity of the designed light transmission area 114 and the protrusion 20 can improve the use effect. In other words, when the rest of the area of the shell surface wall 111 except the area occupied by the protrusion 20 is the light transmission area 114, it can be ensured that the light irradiation effective area 3111 is the largest. That is to say, after the protrusion 20 separates the hair parting 501, the exposed scalp area 500 can be completely covered by the light emitted by the light source 310. However, it should be emphasized that the light transmission area 114 with the largest area is not necessarily the best design scheme. The reason why the light of the light transmission area 114 can effectively irradiate the exposed scalp area 500 also depends on the fact that the protrusion 20 can separate the hair parting 501. Therefore, the arrangement position and quantity of the protrusion 20 and the light transmission area 114 become the key factors for improving the effectiveness of the device. In the solution of the present disclosure, the user can achieve the effect of separating the hair parting 501 during the combing activity in any direction and is irradiated by the light of the light source 310 immediately after the hair parting 501 is separated.

[0100] InFigure 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 light-transmitting area 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 "triangle"-shaped light irradiation collection area 3110 and a "long-waisted"-shaped light irradiation collection area 3110. This enables the device to have a better number layout of the light-transmitting areas 114 and at the same time has a more reasonable layout of the protrusions 20.

[0101] In Figure 11 In the arrangement, the light source 310 and the protrusions 20 are designed based on the long-waisted front cover plate 11. The protrusions 20 are arranged in three vertical columns in the Y-axis direction, and there is a light-transmitting area 114 arranged adjacent to each other between the protrusions 20 in each vertical column. At the same time, two vertical columns of light-transmitting areas 114 are also arranged outside the protrusions 20 arranged in vertical columns. When the user combs their hair with the device, different hair-combing activities can have corresponding hair-combing paths. In one hair-combing direction 001, the hair-combing path can include the fourth hair-combing path 104 in Fig. 11. In another hair-combing direction 001, the hair-combing path can include the fifth hair-combing path 105 in Fig. 11. In yet another hair-combing direction 001, the hair-combing path can include the sixth hair-combing path 106 in Fig. 11. The outermost circle is jointly surrounded by the protrusions 20 and the light-transmitting areas 114.

[0102] In Figure 12 In the arrangement, different from Figure 6 In the arrangement, the light source 310 and the protrusions 20 are designed based on the circular front cover plate 11. Among them, there is no light-transmitting area 114 arranged in a circle around the periphery of the protrusions 20. Such a layout is also considered reasonable and effective.

[0103] In Figure 13 In the arrangement, different from Figure 6 In the arrangement, the light source 310 and the protrusions 20 are designed based on the circular front cover plate 11. Among them, in the X-axis direction and the Y-axis direction, there is a light-transmitting area 114 arranged adjacent to each other between two adjacent protrusions 20. Such a design can be regarded as having a poor use effect compared with Figure 6 In the arrangement, but it still has its rationality and the effectiveness of light irradiation to meet the needs of different users.

[0104] In Figure 14 In the arrangement, different from Figure 6Different from the arrangement of [], the light source 310 and the protrusions 20 are designed based on the circular front cover plate 11. Among them, the protrusions 20 are symmetrically arranged in four directions in a path array. Correspondingly, the inner side of the protrusions 20 is also symmetrically arranged with light-transmitting regions 114 in four directions in a path array. This provides a more abundant layout design scheme for the device and is also considered effective.

[0105] In Figure 15 the arrangement of [], different from Figure 6 the arrangement of [], the light source 310 and the protrusions 20 are designed based on the circular front cover plate 11. Among them, both the protrusions 20 and the light-transmitting regions 114 are arranged in an annular array, and the light-transmitting regions 114 arranged in an annular shape can be understood that the path of their light presents an annular and continuous shape. In this way, it can be ensured that during the hair combing activity in any direction, light can be irradiated to the exposed scalp area 500. This provides a more novel layout design scheme for the device.

[0106] It should be noted that Figure 6 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 the arrangements of [] are exemplary. If necessary, the protrusions 20 and the light-transmitting regions 114 can have a more abundant or better layout design form.

[0107] In some embodiments, among multiple hair combing paths with the same orientation, the path characteristics of at least one hair combing path include that at least part of the adjacent protrusions 20 in the hair combing path have at least part of at least one light-transmitting region 114. Such a design allows the user to have a poor amount of light irradiation to the exposed scalp area 500 during the hair combing activity. At the same time, this scheme provides more flexible functional design margins in other areas of the shell surface wall 111 to meet other implementation possibilities other than the effectiveness of light irradiation. For example, part of the area satisfies the light irradiation to the exposed scalp area 500, and other areas can be set with functional requirements such as microcurrent stimulation of the scalp area 500. This provides more abundant design possibilities for the device.

[0108] Figure 10The relationship between the area between two adjacent protrusions and the area of the effective light-transmitting collection region is shown. Among multiple hair-combing paths with the same orientation, the path characteristics of at least one hair-combing path include: the area of the path region 202 between any two adjacent protrusions 20 in the hair-combing path is S1, and the area of the region of the effective light-transmitting collection region is S2. S1 and S2 satisfy the following condition: S2≥S1×0.1. In the illustration, the area of the region between two adjacent protrusions 20 of the device is defined as the path region 202, and its area is defined by the relative extension and enclosure of the boundary of the protrusion 20 and its outer edge contour 201. Within the path region 202, the light-transmitting region 114 has an effective light-transmitting region 1141 covered by the path region 202 and an ineffective light-transmitting region 1142 located outside the path region 202. The sum of the areas of the effective light-transmitting regions 1141 within the path region 202 constitutes the area S2 of the effective light-transmitting collection region, while the area of the path region 202 is S1. When the condition S2≥S1×0.1 is satisfied, the effectiveness of the light energy irradiated on the exposed scalp region 500 can be ensured during each hair-combing activity of the user. Further, S2 = S1 is considered to have the highest light energy.

[0109] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, based on the idea of the present utility model, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A handheld head care device, characterized in that: include: The shell comprises a shell surface wall having a light-transmitting area; A plurality of light sources are provided and distributed in the housing; A protrusion, wherein a plurality of protrusions are provided, and at least one side of the protrusion in the circumferential direction has the light-transmitting area, the protrusion can part the user's hair and expose the scalp area based on the combing activity, and the light source can emit light to the exposed scalp area through the light-transmitting area; a first sensor, used to detect a distance difference between the first sensor and the hair, the first sensor being communicatively connected to the light source; When the distance difference between the first sensor and the hair is within a threshold activation distance, the light source is turned on or off based on the distance difference between the first sensor and the hair.

2. The handheld head care device according to claim 1, characterized in that: Also included are: A feedback component is communicatively connected with the light source, and the feedback component is used to indicate whether the light source is turned on or off.

3. The handheld head care device according to claim 2, characterized in that: The feedback component includes an auditory feedback member and / or a tactile feedback member.

4. The handheld head care device according to claim 3, characterized in that: When the feedback component includes the auditory feedback component, the auditory feedback component includes a buzzer; When the feedback component includes the tactile feedback element, the tactile feedback element includes a vibration motor.

5. The handheld head care device according to claim 1, characterized in that: The first sensor is disposed in a middle area of ​​the plurality of protrusions; Alternatively, a plurality of the first sensors are provided, and the plurality of the first sensors are distributed in different areas of the plurality of the protrusions.

6. The handheld head care device according to claim 1, characterized in that: Also included are: The second sensor is used to detect the temperature and humidity of the user's scalp.

7. The handheld head care device according to claim 1, characterized in that ； The housing is provided with a mounting groove; The protrusion comprises: A base, wherein the base has a containing space; An elastic member, arranged in the accommodating space; a telescopic portion, the telescopic portion partially extending into the accommodating space and abutting against an end portion of the elastic member, the telescopic portion realizing a telescopic connection with the base portion through the elastic member; Wherein, the base is at least partially assembled in the installation groove, and the telescopic part at least partially protrudes from the shell surface wall and is arranged upright.

8. The handheld head care device according to any one of claims 1 to 7, characterized in that: A circuit board is also included, and the light source is electrically connected to the circuit board.

9. The handheld head care device according to claim 8, characterized in that: The handheld head care device further comprises a communication module, which is electrically connected to the circuit board, and the handheld head care device can be connected to the intelligent terminal through the communication module.

10. The handheld head care device according to claim 8, characterized in that: A rechargeable battery is also included. The rechargeable battery is arranged in the housing and is used to provide power to the light source and the first sensor.

11. The handheld head care device according to claim 1, characterized in that: A plurality of said protrusions are arranged in an array, and said array arrangement includes at least one of a circular array, a rectangular array and a path array or any combination thereof.

12. The handheld head care device according to any one of claims 1 to 7, characterized in that: The handheld phototherapy device has a plurality of combing paths with the same orientation based on the user's combing activities. In any of the combing paths, the protrusions can be used to part the user's hair and expose the scalp area, and at least part of the light emitted by the light source can be irradiated on at least part of the exposed scalp area.

13. A handheld head care device, characterized in that: include: The shell comprises a shell surface wall having a light-transmitting area; A plurality of light sources are provided and distributed in the housing; A protrusion, wherein a plurality of protrusions are provided, and at least one side of the protrusion in the circumferential direction has the light-transmitting area, the protrusion can part the hair and expose the scalp area based on the user's combing activity, and the light source can emit light to the exposed scalp area through the light-transmitting area; a first sensor, used to detect a distance difference between the first sensor and the hair, the first sensor being communicatively connected to the light source; Control circuit; Wherein, the control circuit adjusts the output power of the light source based on the distance difference between the first sensor and the hair.

14. The handheld head care device according to claim 13, characterized in that: When the distance difference between the first sensor and the hair is within a threshold activation distance, as the distance difference between the first sensor and the hair increases, the output power of the light source increases, and as the distance difference between the first sensor and the hair decreases, the output power of the light source decreases; when the distance difference between the first sensor and the hair is outside the threshold activation distance, the light source is turned off.

15. The handheld head care device according to claim 13, characterized in that: Also included are: A feedback component is communicatively connected to the light source, and is used to indicate a change state of the light source output power.

16. The handheld head care device according to claim 15, characterized in that: The feedback component includes an auditory feedback member and / or a tactile feedback member.

17. The handheld head care device according to claim 16, characterized in that: When the feedback component includes the auditory feedback component, the auditory feedback component includes a buzzer; When the feedback component includes the tactile feedback element, the tactile feedback element includes a vibration motor, and a vibration frequency of the vibration motor can be changed based on a change in the output power of the light source.

18. The handheld head care device according to claim 13, characterized in that: Also included are: The second sensor is used to detect the temperature and humidity of the user's scalp.

19. The handheld head care device according to claim 13, characterized in that: A plurality of said protrusions are arranged in an array, and said array arrangement includes at least one of a circular array, a rectangular array and a path array or any combination thereof.

20. The handheld head care device according to any one of claims 13 to 19, characterized in that: The handheld phototherapy device has a plurality of combing paths with the same orientation based on the user's combing activities. In any of the combing paths, the protrusions can be used to part the user's hair and expose the scalp area, and at least part of the light emitted by the light source can be irradiated on at least part of the exposed scalp area.

Images