Phototherapy device for treating brain related diseases

Abstract

The utility model provides a phototherapy device for treating brain related diseases. The phototherapy device comprises a gas supply assembly, a head wearing assembly and a first horn mouth structure. The gas supply assembly at least comprises a gas supply pipe set. The head-mounted assembly comprises a shell and a light-emitting part, the shell is provided with a gas cavity channel in fluid communication with the gas supply pipe set, the gas supply pipe set is used for providing gas for the gas cavity channel, and the gas in the gas cavity channel is used for being blown to the head. The first horn mouth structure is arranged at the gas outlet of the gas supply pipe set and used for enabling gas to enter the gas cavity channel after being diffused through the first horn mouth structure, the size of an opening of the first horn mouth structure is increased in the gas flowing direction, and the cross section area of the opening of the first horn mouth structure is smaller than that of the gas cavity channel. According to the phototherapy device, the first horn mouth structure is arranged, so that noise generated when high-speed fluid transmitted from the gas supply pipe group enters the gas cavity channel with a relatively large cross section area can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of head light therapy, in particular to a light therapy device for treating brain-related diseases. BACKGROUND

[0002] Light biological regulation is a kind of neuroregulation method using light to activate the biochemical reaction of intracellular cascade to treat brain function related diseases, which is related to the treatment of various brain diseases such as depression, autism, Alzheimer's disease (AD) and the like. For example, near-infrared light (NIR) of a certain wavelength has better biological safety, lower tissue autofluorescence and stronger skull penetration. Using near-infrared light of a specific wavelength can penetrate the scalp and skull to deliver photons to the brain tissue, stimulate cytochrome-C oxidase (CcO) of mitochondria, which is a key mitochondrial enzyme of cellular oxygen metabolism, and can promote the metabolic activity of cells. After the near-infrared photons are absorbed by CcO, the CcO is oxidized by photoelectric effect, the mitochondrial membrane potential increases during the oxidation process, thereby accelerating and increasing the synthesis of adenosine triphosphate (ATP), and activating the secondary cell signaling pathway.

[0003] Some brain-related diseases require concentrated high-dose irradiation of part of the brain, such as depression, and some diseases require sufficient dose irradiation of a wide range of brain regions, such as AD. Such dose requirements can cause heat accumulation in the environment around the subject's head, and further cause temperature rise, making the subject uncomfortable. For example, when the average power of irradiation expected to reach the subject's head is above tens of watts, or even higher, and the cumulative irradiation time reaches 15 minutes, or even more than 30 minutes, a sufficient cooling mechanism needs to be provided to keep the temperature of the environment around the subject's head below 45 degrees, so that the subject feels comfortable and can insist on continuous treatment.

[0004] At present, ventilation, further gas ventilation is commonly used to cool down. With the increase of the average power of irradiation and the cumulative irradiation time, the ventilation volume needs to be increased to better cool the subject's head. However, whether it is the high-speed rotation of the fan to realize the rapid circulation of airflow for heat exchange, or the introduction of a compressor to provide cold air, all of them will produce a lot of noise. However, many subjects receiving light therapy suffer from brain-related diseases, such as mild cognitive impairment, Alzheimer's disease, etc., and are more sensitive to noise than ordinary people. The noise covering the head will cause them to be psychologically uncomfortable and make them resist treatment. Therefore, the current near-infrared light therapy equipment for noise reduction by ventilation needs to further reduce the noise to improve the comfort of the subject. CONTENT OF THE UTILITY MODEL

[0005] In view of the above technical problems existing in the prior art, the present application provides a phototherapy device for treating brain-related diseases, which can slow down the speed of the airflow delivered to the gas cavity by arranging a first horn structure, so as to reduce the noise generated when the high-speed fluid transmitted from the gas supply pipe group enters the gas cavity with a relatively large cross-sectional area.

[0006] The present application provides a phototherapy device for treating brain-related diseases, which comprises a gas supply assembly, a head-wearing assembly, and a first horn structure. The gas supply assembly at least comprises a gas supply pipe group. The head-wearing assembly comprises a shell capable of being worn on the head and a light-emitting element arranged on the shell, wherein the light-emitting element is used for emitting near-infrared light to the head, the shell has a gas cavity in fluid communication with the gas supply pipe group, the gas supply pipe group is used for supplying gas to the gas cavity, and the gas in the gas cavity is used for blowing to the head. The first horn structure is arranged at the gas outlet of the gas supply pipe group, and is used for diffusing the gas via the first horn structure and then entering the gas cavity, the opening size of the first horn structure increases along the flow direction of the gas, and the cross-sectional area of the opening of the first horn structure is smaller than that of the gas cavity.

[0007] In some embodiments, the gas cavity has a flow splitting structure arranged corresponding to the opening of the first horn structure, and the flow splitting structure is used for guiding the gas entering via the first horn structure to diffuse circumferentially in the gas cavity.

[0008] In some embodiments, the upper surface of the flow splitting structure is configured as a wind guide surface arranged corresponding to the opening of the first horn structure, the wind guide surface is a curved surface, and the curvature of the wind guide surface is within a preset curvature range, so as to guide the gas entering via the first horn structure to diffuse circumferentially.

[0009] In some embodiments, the shell further has an air inlet cavity, the gas supply pipe group supplies the gas to the gas cavity through the air inlet cavity, and the cross-sectional area of the air inlet cavity is smaller than that of the gas cavity; wherein,

[0010] The first horn structure at least partially extends into the air inlet cavity.

[0011] In some embodiments, the distance between the open end of the first horn structure and the lower end of the air inlet cavity is within a preset distance range.

[0012] In some embodiments, the gas supply pipe group comprises a pipe assembly and an adapter, the pipe assembly is connected with the gas cavity through the adapter, and the first horn structure is formed on the adapter.

[0013] In some embodiments, the pipe assembly comprises a pipe body and a noise reduction member arranged on the inner wall of the pipe body, and the noise reduction member is internally formed with a porous structure.

[0014] In some embodiments, the noise reduction member is configured in a tubular shape, the tubular noise reduction member is arranged on the inner wall of the pipe body, and the lower part of the noise reduction member is sleeved on the adapter.

[0015] The noise reduction member corresponds to the inner wall of the pipe body.

[0016] In some embodiments, when the gas supply pipe group supplies cold gas to the gas cavity, the outer surface and / or the inner surface of the noise reduction member are configured as a closed surface wrapping the porous structure.

[0017] In some embodiments, the adapter comprises a first pipe segment and a second pipe segment connected to each other, the first pipe segment is sleeved on the pipe assembly, and the first horn structure is configured as the pipe opening of the second pipe segment.

[0018] In some embodiments, the shell further has a gas inlet cavity, the gas supply pipe group supplies gas to the gas cavity through the gas inlet cavity, the cross-sectional area of the gas inlet cavity is smaller than the cross-sectional area of the gas cavity, and the second pipe segment at least partially extends into the gas inlet cavity.

[0019] In some embodiments, the gas inlet cavity is formed with a second horn structure, and the lower end of the second pipe segment is located below the root of the second horn structure.

[0020] In some embodiments, the outer wall of the second pipe segment is formed with an annular groove, and a sealing ring is arranged in the annular groove to seal the connection between the second pipe segment and the gas inlet cavity through the sealing ring.

[0021] In some embodiments, the opening of the first horn structure is configured as a tapered widening opening, and the slope of the tapered surface of the tapered widening opening ranges from 0.1 to 0.5.

[0022] In some embodiments, the light therapy device is used for treating at least one of Alzheimer's disease and cognitive impairment.

[0023] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0024] In order to achieve better ventilation and cooling for the head of a user, and due to the irregular arc shape of the head surface, the light therapy device for treating brain-related diseases is provided with a gas cavity with a relatively large cross-sectional area in fluid communication with the gas supply pipe group. The gas supplied by the gas supply assembly enters the gas cavity with a relatively large cross-sectional area through the gas supply pipe group, and can be diffused and transmitted to the corresponding position of the head. The first horn structure is arranged at the gas outlet of the gas supply pipe group, and the cross-sectional area of the opening of the first horn structure is smaller than that of the gas cavity. Therefore, the gas with high flow rate transmitted from the gas supply pipe group can be gradually and slowly reduced in flow rate by the first horn structure before entering the gas cavity with a relatively larger cross-sectional area, so that greater noise caused by sudden change in flow rate can be avoided. In addition, the gas with gradually and slowly reduced flow rate can reduce turbulence and vortex caused by pressure change when entering the gas cavity with a relatively larger cross-sectional area, and can reduce noise caused by sound wave reflection due to collision between the gas and the inner wall of the gas cavity or other components in the gas cavity. After the gas enters the gas cavity, it can diffuse in all directions and flow to multiple areas of the head to achieve the purpose of rapidly cooling the head of the object.

[0025] In addition, the first horn structure arranged at the gas outlet of the gas supply pipe group can smoothly connect the flow channel of the gas supply pipe group and the flow channel of the first horn structure, so that more noise can be avoided. Especially for the scene where the ventilation amount needs to be increased to better cool the head of the object, the first horn structure can achieve better noise reduction effect when a large amount of gas is introduced, so that the object can better accept light therapy and improve the comfort of the object during light therapy. BRIEF DESCRIPTION OF DRAWINGS

[0026] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components throughout the several views. The drawings are intended to illustrate various embodiments in accordance with the present disclosure and are not intended to limit the present disclosure. Same reference numerals in different drawings can represent the same or similar functionality. These embodiments are illustrative rather than limiting in nature.

[0027] Figure 1 A cross-sectional view of the light therapy device of the embodiment of the present application;

[0028] Figure 2 A cross-sectional view of the head wearing assembly of the light therapy device of the embodiment of the present application;

[0029] Figure 3 A partial cross-sectional view of the light therapy device of the embodiment of the present application;

[0030] Figure 4 Figure is a partial structure schematic diagram of the light therapy device of the embodiments of the present application.

[0031] The components represented by the reference numerals in the drawings:

[0032] 1, gas supply pipe group; 11, pipe assembly; 12, pipe body; 13, noise reduction piece; 14, first shell; 15, second shell; 2, head wearing assembly; 21, shell; 22, gas cavity; 23, air inlet cavity; 24, second horn structure; 3, first horn structure; 4, adapter; 41, first pipe section; 42, second pipe section; 43, annular groove; 5, shunt structure; 6, sealing ring; 7, air extraction pipeline; 8, containing cavity; 9, mounting shell; 10, fixing sleeve. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments. The embodiments of the present application will be further described in combination with the drawings and specific embodiments below, but not as a limitation to the present application.

[0034] The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. The words such as "include" or "contain" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] In the present application, when it is described that a specific device is located between a first device and a second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device. When it is described that a specific device is connected to other devices, the specific device can be directly connected to the other devices without an intermediate device, or can not be directly connected to the other devices with an intermediate device.

[0036] All the terms used in the present application (including technical terms or scientific terms) have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that the terms defined in, such as general dictionaries, should be interpreted to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formalized sense, unless specifically defined here.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] This application provides a phototherapy device for treating brain-related diseases. For example... Figures 1 to 4 As shown, the phototherapy device includes a gas supply assembly, a head-wearing assembly 2, and a first flared structure 3. The gas supply assembly includes at least a gas supply tube assembly 1. The head-wearing assembly 2 includes a housing 21 that can be worn on the head and a light-emitting element (not shown) disposed on the housing 21. The light-emitting element is used to emit near-infrared light towards the head. The housing 21 has a gas cavity 22 that is in fluid communication with the gas supply tube assembly 1. The gas supply tube assembly 1 is used to supply gas to the gas cavity 22, and the gas in the gas cavity 22 is used to blow towards the head. The first flared structure 3 is disposed at the outlet of the gas supply tube assembly 1, and is used to allow gas to diffuse through the first flared structure 3 and enter the gas cavity 22. The opening size of the first flared structure 3 increases along the gas flow direction, and the cross-sectional area of ​​the opening of the first flared structure 3 is smaller than the cross-sectional area of ​​the gas cavity 22.

[0039] Exemplarily, the gas supply assembly can provide cold air into the gas cavity 22 to achieve a better cooling effect. In other embodiments, the gas supply assembly can also provide room temperature gas into the gas cavity 22, achieving a cooling effect through the exchange of a large amount of room temperature gas. This application uses a gas supply assembly including a refrigeration device for supplying cold air to the gas supply pipe assembly 1 as an example for illustration, but this application is not limited to this. Those skilled in the art can also make other designs for the gas supply assembly according to needs to achieve the purpose of cooling through ventilation. Exemplarily, the refrigeration device can be a compressor. After generating gas, the refrigeration device transmits cold air to the gas supply pipe assembly 1, and then transmits the gas to the gas cavity 22 of the housing 21 through the gas supply pipe assembly 1. Then, it transmits the gas to the head through the gas cavity 22 to achieve the effect of cooling the head, improving the comfort of the subject during phototherapy, thereby further improving the treatment effect.

[0040] The aforementioned housing 21 may be configured to correspond to at least a portion of the head, for example, it may be configured to correspond to a portion of the brain or the entire head. For example, as... Figure 1 and Figure 2 As shown in the figure, the housing 21 shown is a housing 21 corresponding to the entire head. Specifically, the light-emitting element can be configured according to the target irradiation point. For example, when irradiating only the forehead, the housing 21 can be constructed as an arc-shaped housing that can cover the forehead, and the light-emitting element can be configured so that its irradiation range can cover the frontal lobe. Another example is when used to treat patients with cognitive impairment or Alzheimer's disease, where a phototherapy device is needed to irradiate the patient's entire head with a high dose; therefore, the housing 21 can be constructed as follows.Figure 1 The shell shape capable of covering the whole head corresponds to the setting of the light emitting member so that its irradiation range can cover all brain regions. The gas channel 22 can be configured to not block the near-infrared light emitted by the light emitting member, for example, the gas channel 22 can be configured as a light-transmitting shell arranged in front of the light emitting member, for another example, the gas channel 22 can be configured as a pipeline that avoids the irradiation range of the light emitting member. In general, the shape, structure, material, etc. of the shell 21, and the setting position of the light emitting member, the shape, structure, etc. of the gas channel 22 are not specifically limited.

[0041] The inner side of the shell 21 can be provided with a gas outlet hole communicating with the gas channel 22, and the gas channel 22 discharges gas to the object's head through the gas outlet hole to achieve the purpose of cooling the object's head.

[0042] The gas outlet hole communicating with the gas channel 22 is arranged corresponding to at least part of the head, so that the gas in the gas channel 22 can be blown to multiple regions of the head, that is, after the gas enters the gas channel 22 through the first horn structure 3, it will diffuse in different directions in the gas channel 22, so that the gas can be blown to multiple regions of the head more quickly, achieving a better cooling effect on the head.

[0043] In some embodiments, when the gas channel 22 is arranged corresponding to the whole head, the opening of the first horn structure 3 can be arranged corresponding to the top of the gas channel 22, so that the gas entering the gas channel 22 through the first horn structure 3 can diffuse from the top to all around and flow to all parts of the head, achieving the purpose of cooling the whole head.

[0044] The opening size of the above-mentioned first horn structure 3 gradually increases, so as to gradually and slowly reduce the flow speed, rather than suddenly reducing the flow speed, thereby avoiding generating more noise due to sudden changes in flow rate, so as to improve the noise reduction effect of the first horn structure 3. Specifically, the first horn structure 3 can have a preset length, and the gradually increasing opening size design makes the flow rate reduction relatively slow, and the flow rate of the gas entering the gas channel 22 is lower, and when the gas enters the gas channel 22 with a relatively larger cross-sectional area from the first horn structure 3, it can reduce the turbulence and vortex caused by pressure changes, and can reduce the noise caused by sound wave reflection due to the collision between the gas and the inner wall of the gas channel 22 or other components in the gas channel 22. In one specific embodiment, the opening of the first horn structure 3 can be configured as a tapered widening opening, which is conducive to gently reducing the speed of the gas flow, further reducing noise.

[0045] The open end of the first horn structure 3 can be located at the joint of the gas supply pipe group 1 and the gas cavity 22, so that the gas discharged by the first horn structure 3 can directly enter the gas cavity 22, avoiding the noise caused by the contact between the gas and other structural members, thereby achieving the purpose of further reducing the noise. The open end of the first horn structure 3 can be understood as the maximum diameter end of the first horn structure 3.

[0046] Specifically, the cross-sectional area of the opening of the first horn structure 3 is smaller than the cross-sectional area of the gas cavity 22 can be understood as the cross-sectional area of the maximum diameter of the first horn structure 3 is smaller than the cross-sectional area of the gas cavity 22, that is, the cross-sectional area of each part of the first horn structure 3 is smaller than the cross-sectional area of the gas cavity 22, so that the gas flow rate is gradually slowed down during the process of the gas entering the gas cavity 22 through the first horn structure 3.

[0047] Preferably, the first horn structure 3 is arranged at the gas outlet of the gas supply pipe group 1, which can achieve better noise reduction effect. The inventor found that arranging the first horn structure 3 at the gas outlet of the gas supply pipe group 1 can make the flow channel of the gas supply pipe group 1 and the flow channel of the first horn structure 3 more smoothly connected, avoiding the generation of more noise. Through testing of the product, the test results also prove that compared with arranging the first horn structure 3 on the shell 21, at the gas inlet of the gas supply pipe group 1, or between the gas inlet and the gas outlet of the gas supply pipe group 1, arranging the first horn structure 3 at the gas outlet of the gas supply pipe group 1 can effectively reduce the noise, for example, compared with arranging the first horn structure 3 on the shell 21, arranging the first horn structure 3 at the gas outlet of the gas supply pipe group 1 can reduce the noise by at least 3dB to 4dB, which significantly improves the noise reduction effect.

[0048] Alternatively, the first horn structure 3 can be formed on the gas supply pipe group 1, such as being formed by extending the pipe assembly 11 of the gas supply pipe group 1, or being formed on the adapter 4 connected to the pipe assembly 11 of the gas supply pipe group 1 below, or being formed on a separate member connected to the gas outlet of the gas supply pipe group 1, which is not limited in the present application. The first horn structure 3 is arranged at the gas outlet of the gas supply pipe group 1.

[0049] As Figure 1As shown, in order to achieve better ventilation and cooling for the partial or whole head of the user, and due to the irregular arc shape of the head surface, the phototherapy device for treating brain-related diseases is provided with a gas cavity 22 in fluid communication with the gas supply pipe group 1 and having a relatively large cross-sectional area. The gas supplied by the gas supply assembly 1 enters the gas cavity 22 with a relatively large cross-sectional area via the gas supply pipe group 1, and can be diffused and transmitted to the corresponding position of the head. The present application sets a first horn structure 3 at the gas outlet of the gas supply pipe group 1, and the cross-sectional area of the opening of the first horn structure 3 is smaller than that of the gas cavity 22, so that the gas with high flow rate transmitted from the gas supply pipe group 1 can be gradually and slowly reduced in flow rate by the first horn structure 3 before entering the gas cavity 22 with a relatively larger cross-sectional area, thereby avoiding greater noise caused by sudden changes in flow rate. In addition, the gas with gradually and slowly reduced flow rate can reduce turbulence and vortex caused by pressure changes when entering the gas cavity with a relatively larger cross-sectional area, and can reduce noise caused by sound wave reflection due to the collision between the gas and the inner wall of the gas cavity 22 or other components in the gas cavity 22. After entering the gas cavity 22, the gas can diffuse in all directions and flow to multiple areas of the head to achieve the purpose of rapidly cooling the head of the subject.

[0050] Further, the first horn structure 3 is arranged at the gas outlet of the gas supply pipe group 1, which can make the flow channel of the gas supply pipe group 1 and the flow channel of the first horn structure 3 smoothly connect, thereby avoiding more noise. Especially for the scene that needs to improve the ventilation amount to better cool the head of the subject, the above-mentioned first horn structure 3 can achieve better noise reduction effect when a large amount of gas is introduced, so that the subject can better accept the light therapy and improve the comfort of the subject during the light therapy.

[0051] In some embodiments, as shown in Figure 1 and Figure 2 As shown, the gas cavity 22 has a flow splitting structure 5 arranged corresponding to the opening of the first horn structure 3, which is used to guide the gas entering the gas cavity 22 via the first horn structure 3 to diffuse circumferentially to the head. Wherein, the opening of the first horn structure 3 can be understood as the largest caliber of the first horn structure 3.

[0052] Therefore, the shunt structure 5 can guide the gas to diffuse circumferentially in the gas cavity 22, so that the gas can quickly blow to different regions of the head, thereby achieving the purpose of better cooling the head. Optionally, the shunt structure 5 can be designed according to the irradiation target area of the light therapy (which can also be understood as the area with relatively high temperature during the light therapy), such as the flow direction of the shunt structure 5, the setting position in the gas cavity 22, etc., which are not limited in the present application.

[0053] It should be noted that, in order to enable the gas to quickly blow to different regions of the head, the present application guides the gas to diffuse circumferentially to the head by setting the shunt structure 5, but this will cause the gas entering the gas cavity 22 to directly impact the upper surface of the shunt structure 5, thereby generating a relatively large noise. By setting the first horn structure 3, the shunt structure 5 can also be set in the gas cavity 22, which can reduce the noise caused by the turbulence and vortex of the gas entering the gas cavity 22 as much as possible while ensuring the rapid cooling of the head of the object, thereby achieving the purpose of improving the comfort of the object during the light therapy.

[0054] In some embodiments, the above-mentioned shunt structure 5 can be arranged at the top of the gas cavity 22, and the gas can be diffused to the surrounding through the guidance of the shunt structure 5, thereby cooling the head more.

[0055] In a specific embodiment, as shown in Figure 1 , the above-mentioned shell 21 can include a first shell 14 and a second shell 15 arranged corresponding to the head of the object, the first shell 14 is arranged outside the second shell 15, the gas cavity 22 is formed between the first shell 14 and the second shell 15, and the shunt structure 5 is arranged at the top of the second shell 15. A through slot is arranged on the first shell 14 corresponding to the opening of the first horn structure 3, so that the gas discharged by the first horn structure 3 can directly blow to the shunt structure 5.

[0056] In some embodiments, as shown in Figure 1 and Figure 2 , the upper surface of the shunt structure 5 is arranged as a wind guide surface corresponding to the opening of the first horn structure 3, the wind guide surface is a curved surface, and the curvature of the wind guide surface is within a predetermined curvature range. The curved wind guide surface can better guide the gas entering through the first horn structure 3 to diffuse circumferentially. In this way, the gas can be effectively shunted by the curved wind guide surface, so that the gas entering through the first horn structure 3 is guided to the surrounding, thereby achieving effective cooling of multiple regions of the head.

[0057] Specifically, the air guide surface can be configured in any structure capable of diffusing the cold air to the surroundings, such as a concave shape or an arch shape. When the air guide surface is in an arch shape, the curvature of the arch shape is within a preset curvature range, so that the introduced air is diffused to the surroundings gently under the action of the air guide surface.

[0058] The curvature of the air guide surface is as small as possible, so that a large amount of air introduced into the first horn structure 3 can be blown directly to the air guide surface, the flow rate of the air is reduced under the action of the air guide surface, and the air can be diffused to the surroundings along the air guide surface, so that the air can be discharged gently and uniformly to all parts of the head, further improving the comfort of the subject, and the air with a lower flow rate can further reduce the noise generated during air transmission.

[0059] In some embodiments, as shown in Figure 1 and Figure 2 The shell 21 also has an air inlet cavity 23, and the gas supply pipe group 1 provides air to the air cavity 22 through the air inlet cavity 23. The cross-sectional area of the air inlet cavity 23 is smaller than that of the air cavity 22. The first horn structure 3 at least partially extends into the air inlet cavity 23.

[0060] In this way, the air discharged from the first horn structure 3 with a reduced flow rate can directly enter the air cavity 22, avoiding collision with more contact surfaces, and further reducing the noise generated by sound wave reflection during air transmission.

[0061] The top of the shell 21 can be upwardly protruding to form a protruding portion, and the air inlet cavity 23 is formed on the protruding portion. The air cavity 22 is located below the air inlet cavity 23, so that the air can be diffused to the surroundings after entering the air cavity 22 through the air inlet cavity 23, to quickly cool the head of the subject. Specifically, the first shell 14 of the shell 21 can be upwardly protruding to form the protruding portion.

[0062] The height of the air inlet cavity 23 can be adapted to the insertion depth of the first horn structure 3. The height of the air inlet cavity 23 cannot exceed the insertion depth of the first horn structure 3 too much, so as to avoid excessive collision and friction of the air with the cavity wall of the air inlet cavity 23, further reducing the noise generated by air flow.

[0063] Specifically, the distance between the open end of the first horn structure 3 and the lower end of the air inlet cavity 23 is within a preset distance range. The open end of the first horn structure 3 can be located below the lower end of the air inlet cavity 23, i.e., the open end of the first horn structure 3 penetrates the air inlet cavity 23. The open end of the first horn structure 3 can also be located above the lower end of the air inlet cavity 23, i.e., the open end of the first horn structure 3 extends into the air inlet cavity 23 and does not penetrate the air inlet cavity 23, for example, the open end of the first horn structure 3 is slightly higher than the lower end of the air inlet cavity 23. The open end of the first horn structure 3 can also be substantially at the same height as the lower end of the air inlet cavity 23. For example Figure 1 , Figure 1 The open end of the first horn structure 3 and the lower end of the air inlet cavity 23 are substantially at the same height as shown in FIG. 1.

[0064] The above-mentioned preset distance range can be 0mm to 5mm, such as 0mm, 1mm, 2mm, 3mm, 4mm. Preferably, the distance between the open end of the first horn structure 3 and the lower end of the air inlet cavity 23 is preferably small. The inventors believe that a smaller distance between the two can enable the gas transmitted from the open end of the first horn structure 3 to minimize contact with the cavity wall of the air inlet cavity 23 and relatively smoothly enter the gas cavity 22, thereby achieving the purpose of optimizing the noise reduction effect. By limiting the relative position relationship between the open end of the first horn structure 3 and the lower end of the air inlet cavity 23, the purpose of optimizing the noise reduction effect can be achieved.

[0065] In some embodiments, as shown in Figure 1 , Figure 3 and Figure 4 The gas supply pipe group 1 includes a pipe assembly 11 and an adapter 4, the pipe assembly 11 is connected with the gas cavity 22 through the adapter 4, and the first horn structure 3 is formed on the adapter 4.

[0066] In this way, the communication between the pipe assembly 11 and the gas cavity 22 can be achieved through the adapter 4, and the first horn structure 3 on the adapter 4 can gradually and slowly reduce the speed of the gas flow delivered to the gas cavity 22, thereby ensuring that the noise is effectively reduced on the basis of reasonable structural design.

[0067] In some embodiments, the two ends of the above-mentioned adapter 4 can be connected with the gas cavity 22 and the pipe assembly 11 respectively by a detachable connection mode. Specifically, a plug-in connection mode can be used to achieve the purpose of facilitating the disassembly and assembly of the adapter 4.

[0068] In some embodiments, the first flared structure 3 can be formed on both the adapter 4 and the tube assembly 11. In this case, the first flared structure 3 on the tube assembly 11 can be located above the first flared structure 3 on the adapter 4, and the maximum diameter of the first flared structure 3 on the tube assembly 11 can be smaller than the minimum diameter of the first flared structure 3 on the adapter 4, so that the gas can be discharged into the gas cavity 22 along the two first flared structures 3 with gradually increasing diameters, so as to further slow down the gas flow speed and better reduce the noise. In other embodiments, the first flared structure 3 can be formed only on the tube assembly 11.

[0069] Preferably, the first flared structure 3 is formed on the adapter 4, so that the flow passage of the gas supply tube set 1 transmitting the gas with a high flow speed can smoothly connect with the flow passage of the first flared structure 3 on the basis of ensuring that the gas supply tube set 1 and the housing 21 can be stably connected, and the high-flow-speed gas is gradually and slowly reduced in flow speed by the first flared structure 3, so as to reduce the noise.

[0070] In some embodiments, as shown in FIGS. 1 and 2, the tube assembly 11 includes a tube body 12 and a noise reduction member 13 arranged on the inner wall of the tube body 12, and the inside of the noise reduction member 13 is formed with a porous structure. Figure 1 and Figure 3 The noise reduction member 13 arranged on the inner wall of the tube body 12 can absorb the noise generated in the gas transmission process, so as to effectively reduce the noise generated when the gas supply tube set 1 provides the gas to the gas cavity 22, thereby reducing the noise generated by the head cooling through the gas ventilation, especially for the scene in which the ventilation amount needs to be increased to better cool the head of the object, so that the noise can be better reduced when a large amount of gas is introduced, and the object can better receive the light treatment, and the comfort of the object in the light treatment can be improved.

[0071] Specifically, the ventilation amount can be adjusted by adjusting the working state of the refrigeration device, so as to better cool the head of the object. The noise reduction member 13 used in the present application in cooperation with the first flared structure 3 can particularly solve the problem of increased noise caused by a large ventilation amount, so as to achieve the effect of better cooling the head of the object while reducing the noise around the head of the object.

[0072] Specifically, in the case of arranging the noise reduction piece 13 in the pipe body 12, in order to ensure the flow of the gas conveyed by the pipe assembly 11, the inner diameter of the pipe body 12 can be increased to ensure the flow of the gas, which may affect the position of the air inlet cavity 23, the assembly mode of the gas supply pipe group 1 and the shell 21, and the like. For example, in the case where other components on the outer side of the shell are not moved, the position of the air inlet cavity 23 on the shell needs to be adjusted, which changes the relative position relationship between the air inlet cavity 23 and the gas cavity 22, and the test result shows that the noise increases. In this case, the first horn structure 3 in combination with the noise reduction piece 13 can solve the problem of noise increase and achieve effective noise reduction in the case of arranging the noise reduction piece 13 in the pipe body 12.

[0073] The noise reduction piece 13 described above can be made of any one of materials such as ethylene-propylene-diene rubber, silica gel and polyurethane. Specifically, it can be a loose porous structure to achieve better sound absorption effect. For example, a tubular structure of foamed rubber formed by using ethylene-propylene-diene rubber as a base material can better fit the inner wall of the pipe body 12 to further improve the noise reduction effect of the noise reduction piece 13.

[0074] In some embodiments, the noise reduction piece 13 described above can be made of a heat insulation material. In particular, in the case where the gas supplied by the gas supply pipe group 1 is cold air, the noise reduction piece 13 made of a heat insulation material can better maintain the temperature of the cold air to achieve the purpose of heat preservation for the gas.

[0075] In some embodiments, the porous structure described above includes a plurality of noise reduction holes which are independent of each other to achieve better noise reduction effect and the purpose of heat preservation for the gas.

[0076] In some embodiments, the inner wall of the gas cavity 22 can also be provided with the noise reduction piece 13 described above. The noise reduction piece 13 can specifically cover the inner wall of the gas cavity 22 in a paving manner or be arranged to fit part of the inner wall of the gas cavity 22. The present application does not make specific limitations thereon as long as the purpose of absorbing noise through the porous structure of the noise reduction piece 13 can be achieved.

[0077] In some embodiments, the noise reduction piece 13 and the light emitting piece can be arranged in a staggered manner when the noise reduction piece 13 is arranged on the inner wall of the gas cavity 22. This can as much as possible avoid the noise reduction piece 13 from shielding the near-infrared light emitted by the light emitting piece, so as to ensure the irradiation range of the near-infrared light and thus ensure the light treatment effect.

[0078] Optionally, the noise reduction piece 13 described above can be arranged corresponding to the area between the adjacent light emitting pieces to as much as possible reduce the noise generated by the airflow while ensuring the light treatment effect.

[0079] In some other embodiments, the noise reduction member 13 can be made of a light-transmitting material, in which case the noise reduction member 13 can be arranged corresponding to at least part of the light emitting member, and the near-infrared light emitted by the light emitting member can be irradiated to the head through the light-transmitting noise reduction member 13, so as to achieve the purpose of ensuring the light treatment effect while reducing the noise.

[0080] In some embodiments, the noise reduction member 13 is configured in a tubular shape, and is arranged corresponding to the inner wall of the pipe body 12, and the lower part of the noise reduction member 13 is sleeved outside the adapter 4. Alternatively, the noise reduction member 13 is arranged corresponding to the inner wall of the pipe body 12 in a partial manner. The design of the noise reduction member 13 described above can increase the contact area between the noise reduction member 13 and the pipe body 12 as much as possible, so that the gas can contact the noise reduction member 13 more, and thus the noise generated by the gas flow can be absorbed through the porous structure of the noise reduction member 13.

[0081] The thickness of the tubular noise reduction member 13 described above can be in the range of 5mm to 10mm, which can ensure the sound absorption effect of the porous structure, and at the same time, can avoid affecting the flow of the gas due to the excessive thickness.

[0082] When the noise reduction member 13 is arranged corresponding to the inner wall of the pipe body 12 in a partial manner, the shape of the noise reduction member 13 can be a long strip shape, and the long strip-shaped noise reduction member 13 can be arranged in a spaced manner along the circumferential direction of the pipe body 12, and the length direction of the noise reduction member 13 is the same as the axial direction of the pipe body 12. Of course, the noise reduction member 13 can also have other shapes, such as a V-shaped, a cross-shaped, etc., which are not limited in the present application.

[0083] In some embodiments, the two ends of the noise reduction member 13 can be connected to the inner wall of the pipe body 12 through an adhesive layer. While ensuring the flexibility in the use scenario, the noise reduction member 13 can be stably arranged in the pipe body 12 through the adhesive layer, and the installation stability of the noise reduction member 13 can be increased.

[0084] In some embodiments, when the gas supply pipe group 1 provides the cold gas to the gas cavity 22, the outer surface and / or the inner surface of the noise reduction member 13 is configured as a closed surface wrapping the porous structure. When the gas supply pipe group 1 provides the cold gas to the gas cavity 22, so as to achieve the purpose of cooling the head more quickly, the porous structure inside the noise reduction member 13 is isolated from the external environment through the closed surface, so as to improve the noise reduction effect of the noise reduction member 13, and at the same time, the cold gas delivered through the noise reduction member 13 can be better insulated, so as to improve the cooling effect on the head of the subject.

[0085] The cold gas described above can be a temperature-adjustable gas obtained by refrigeration of a refrigeration device, and the temperature thereof can be controlled in a range that can effectively cool the head of the subject, and does not excessively stimulate the head of the subject, so as to further improve the comfort of the subject and increase the treatment cooperation degree of the subject.

[0086] The closed surface can be understood as a surface without holes, and the outer surface of the closed surface can be a smooth surface. The smooth inner surface of the noise reduction piece 13 can reduce the resistance and loss to the wind speed, and the smooth outer surface of the noise reduction piece 13 can increase the adhesion to the gas channel 22.

[0087] As shown in Figs. 1 and 2, the outer surface and the inner surface of the noise reduction piece 13 are both configured as a closed surface wrapping the porous structure, so as to achieve a better heat preservation effect. Figure 1 Figure 3 As shown in Figs. 1 and 2, the outer surface and the inner surface of the noise reduction piece 13 are both configured as a closed surface wrapping the porous structure, so as to achieve a better heat preservation effect.

[0088] As shown in Figs. 1 and 2, the outer surface and the inner surface of the noise reduction piece 13 are both configured as a closed surface wrapping the porous structure, so as to achieve a better heat preservation effect. Figure 1 Figure 3 As shown in Figs. 1 and 2, the outer surface and the inner surface of the noise reduction piece 13 are both configured as a closed surface wrapping the porous structure, so as to achieve a better heat preservation effect.

[0089] The axis of the first pipe segment 41 and the axis of the second pipe segment 42 can be collinear, so as to further reduce the noise generated during the transmission of the gas in the first pipe segment 41 and the second pipe segment 42. Specifically, the length of the second pipe segment 42 has a preset length. When the opening of the first horn structure 3 is configured as a tapered widening opening, and the slope of the tapered surface of the tapered widening opening is within a preset range, the length of the second pipe segment 42 that is too long can cause the pipe diameter to be too large, which can affect the arrangement of the gas supply pipe assembly 1 and the shell 21, or even other components arranged on the shell 21. On the other hand, the length of the second pipe segment 42 that is too short can not achieve the gradual and slow reduction of the flow rate. Therefore, the length of the second pipe segment 42 can be designed according to the gas flow rate, the required noise reduction degree, the connection between the gas supply pipe assembly 1 and the shell 21, and other factors.

[0090] In some embodiments, the noise reduction piece 13 can be made of a deformable material. The first pipe segment 41 can deform the inner wall surface of the noise reduction piece 13, so as to stably sleeve the first pipe segment 41 and the noise reduction piece 13, and smoothly connect the flow channel of the first pipe segment 41 and the flow channel of the pipe assembly 11, thereby avoiding generating more noise.

[0091] Of course, the first pipe segment 41 and the noise reduction piece 13 can also be connected in other ways. For example, the inner wall surface of the noise reduction piece 13 can also be formed with an annular recess, and the first pipe segment 41 can be embedded in the annular recess of the noise reduction piece 13, so as to stably sleeve the first pipe segment 41 and the noise reduction piece 13.

[0092] ​​The light therapy device can further comprise a mounting shell 9 arranged at the outlet of the tube assembly 11, and the mounting shell 9 is used to stably mount the tube assembly 11 on the shell 21. The first tube segment 41 and the second tube segment 42 can be connected by a mounting ring, and the mounting ring can be mounted on the mounting shell 9 to achieve stable connection of the adapter 4 and the tube assembly 11.

[0093] The tube assembly 11 connected with the shell 21 can be sleeved with a fixing sleeve 10 at one end, and the fixing sleeve 10 is located in the mounting shell 9, so that the end of the tube assembly 11 connected with the shell 21 can be stably mounted in the mounting shell 9.

[0094] In some embodiments, as shown in Figures 1 to 3 The shell 21 also has an air inlet cavity 23, and the gas supply pipe group 1 provides gas to the gas cavity 22 through the air inlet cavity 23. The cross-sectional area of the air inlet cavity 23 is smaller than that of the gas cavity 22, and the second tube segment 42 at least partially extends into the air inlet cavity 23. The inventor believes that in this way, the gas with reduced flow rate discharged from the first horn structure 3 on the second tube segment 42 can more smoothly enter the gas cavity 22 without colliding with more contact surfaces, which can further reduce the noise generated by the gas during transportation.

[0095] In some embodiments, as shown in Figure 1 and Figure 2 The air inlet cavity 23 is formed with a second horn structure 24, and the lower end of the second tube segment 42 is located below the root of the second horn structure 24. The root of the second horn structure 24 can be understood as the place with the smallest diameter of the second horn structure 24. Forming the second horn structure 24 on the air inlet cavity 23 is beneficial for the process manufacturing of the air inlet cavity 23. On the basis of forming the second horn structure 24, the above-mentioned cooperation design of the second tube segment 42 and the second horn structure 24 can further slow down the speed of the gas flow transported to the gas cavity 22, can reduce the noise generated by the high-speed fluid impacting the gas cavity 22, and can reduce the turbulence and vortex caused by the pressure change when entering the gas cavity 22 with a relatively larger cross-sectional area, thereby further achieving the purpose of reducing noise. Moreover, by arranging the lower end of the second tube segment 42 below the root of the second horn structure 24, the flow rate of the gas can be relatively smooth and slowed down when passing through the first horn structure 3 on the second tube segment 42 and the second horn structure 24 on the air inlet cavity 23 in sequence and then entering the gas cavity 22, thereby further reducing the noise level of the environment around the head of the object.

[0096] The lower end of the second tube section 42 can be located above the opening of the second horn structure 24, and at the joint of the first horn structure 3 and the second horn structure 24, the caliber of the first horn structure 3 is smaller than that of the second horn structure 24, so that the first horn structure 3 can be stably inserted into the second horn structure 24 on the basis of slowing down the airflow successively via the first horn structure 3 and the second horn structure 24. Preferably, the maximum cross-sectional area of the opening of the first horn structure 3 can reach the lower edge of the second horn structure 24 connected with the gas channel 22, so as to avoid more collision of the gas delivered from the first horn structure 3 with the inner wall of the second horn structure 24, causing more noise.

[0097] The opening size of the second horn structure 24 can increase along the flow direction of the gas, specifically, can gradually increase, so as to gradually slow down the airflow speed and further reduce the noise generated by the airflow.

[0098] In some embodiments, as shown in Figure 1 , Figure 3 and Figure 4 , the outer wall of the second tube section 42 is formed with an annular groove 43, and a sealing ring 6 is arranged in the annular groove 43, so as to seal and connect the second tube section 42 and the gas inlet cavity 23 by the sealing ring 6. In this way, the sealing connection between the second tube section 42 and the gas inlet cavity 23 can be ensured, so as to avoid the gas leakage at the joint of the second tube section 42 and the gas inlet cavity 23 and to avoid more noise. Compared with the end-to-end sealing mode, the sealing effect can be better by using the annular groove 43 and the sealing ring 6 to cooperate with each other to realize the sealing.

[0099] In some embodiments, as shown in Figure 1 and Figure 3 , the opening of the first horn structure 3 is configured as a tapered widening opening, and the slope of the tapered surface of the tapered widening opening ranges from 1° to 20°. Test results prove that the first horn structure 3 with the tapered widening opening can gently reduce the speed of the airflow, and significantly reduce the noise.

[0100] In some embodiments, the phototherapy device is used for treating at least one of Alzheimer's disease and cognitive impairment. In particular, when a high-dose whole-head irradiation is performed on a patient with Alzheimer's disease, the phototherapy device of the present application can effectively cool the head while significantly reducing the noise level of the environment around the patient's head, improve the comfort during the light treatment, prolong the treatment time, and will not cause the patient's resistance psychology.

[0101] In some embodiments, as shown in Figure 1 and Figure 3As shown, the light therapy device further comprises an air extraction pipeline 7, and the shell 21 is formed with a containing cavity 8 in which the light emitting element is arranged, and the air extraction pipeline 7 is in communication with the containing cavity 8 to cool the light emitting element through the air extraction pipeline 7. Specifically, the shell 21 can be provided with a vent hole to make the containing cavity 8 in fluid communication with the external environment. In this way, the heat in the containing cavity 8 can be taken away through the air extraction pipeline 7 to cool the light emitting element, prolong the service life of the light emitting element, and further improve the cooling effect on the head.

[0102] In some embodiments, the light therapy device described above can further comprise an air extraction device in communication with the air extraction pipeline 7 for extracting the gas in the containing cavity 8. The air extraction device can be specifically an air extraction pump, and can also be other devices capable of extracting air, which is not limited in the present application.

[0103] In some embodiments, the air extraction pipeline 7 can be made of soft material to facilitate the movement and adjustment of the air extraction pipeline 7 and improve the convenience of use.

[0104] In some embodiments, a noise reduction body (not shown in the figure) can be arranged on the inner wall of the air extraction pipeline 7, and the inside of the noise reduction body is formed with a porous structure. In this way, the noise generated by the gas flow in the air extraction pipeline 7 can be absorbed by the noise reduction body, further reducing the noise level of the environment around the head of the subject and improving the comfort of the subject during light therapy.

[0105] The noise reduction body described above can be arranged corresponding to the inner wall of part of the air extraction pipeline 7, or can cover the inner wall of the air extraction pipeline 7, which is not limited in the present application as long as the purpose of absorbing noise through the porous structure in the noise reduction body can be achieved.

[0106] The noise reduction body described above can be made of the same structure and / or material as the noise reduction element 13, or can be made of different structure and / or material, which is not limited in the present application.

[0107] In addition, although the exemplary embodiments have been described herein, the scope of the present application includes any and all embodiments having equivalent elements, modifications, omissions, combinations (for example, solutions cross various embodiments), adaptations, or alterations based on the present application. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in the specification or during the implementation of the present application, and the examples will be interpreted as non-exclusive.

[0108] The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more aspects thereof) can be used in combination with each other. Other embodiments can be used, which will be apparent to those of ordinary skill in the art upon reviewing the above description. Additionally, the various features described above can be grouped together or divided into separate features for the purpose of simplifying the present disclosure. This should not be interpreted as a requirement to practice any claim in its full scope unless the claim does not encompass additional embodiments to those that can be claimed. The scope of the application should therefore be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms “including” and “comprising” are open-ended, that is, are intended to mean one or more items, products, or methods which can be purchased, used, or collected, e.g., “including” a fruit may mean that the fruit can be an apple, an orange, a banana, a grape, or any other fruit. Further, the terms “first” and “second” are used merely as labels, and are not intended to impose numerical requirements on their objects.

[0109] The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

Claims

1. A phototherapy device for treating brain-related diseases, characterized by, The application relates to a gas supply assembly, comprising: a gas supply pipe group; a head-wearing assembly, comprising a shell capable of being worn on a head and a light-emitting element arranged on the shell, the light-emitting element being used for emitting near-infrared light to the head, the shell having a gas cavity in fluid communication with the gas supply pipe group, the gas supply pipe group being used for supplying gas to the gas cavity, and the gas in the gas cavity being used for blowing to the head; a first horn structure arranged at a gas outlet of the gas supply pipe group, used for diffusing the gas into the gas cavity via the first horn structure, the opening size of the first horn structure being increased along the flow direction of the gas, and the cross-sectional area of the opening of the first horn structure being smaller than the cross-sectional area of the gas cavity.

2. The phototherapy device of claim 1, wherein, The gas cavity has a flow distribution structure arranged corresponding to the opening of the first horn structure, the flow distribution structure being used for guiding the gas entering via the first horn structure to diffuse circumferentially in the gas cavity.

3. The phototherapy device of claim 2, wherein, An upper surface of the flow distribution structure is configured as a wind guide surface arranged corresponding to the opening of the first horn structure, the wind guide surface being a curved surface, and the curvature of the wind guide surface being within a preset curvature range, used for guiding the gas entering via the first horn structure to diffuse circumferentially.

4. Phototherapy device according to any of claims 1-3, characterized in that, The shell further has an air inlet cavity, the gas supply pipe group supplies the gas to the gas cavity through the air inlet cavity, and the cross-sectional area of the air inlet cavity is smaller than the cross-sectional area of the gas cavity; wherein, The first horn structure at least partially extends into the air inlet cavity.

5. The phototherapy device of claim 4, wherein, The spacing between the opening end of the first horn structure and the lower end of the air inlet cavity is within a preset spacing range.

6. The phototherapy device of any one of claims 1-3, wherein, The gas supply pipe group comprises a pipe assembly and an adapter, the pipe assembly is connected with the gas cavity through the adapter, and the first horn structure is formed on the adapter.

7. The phototherapy device of claim 6, wherein, The pipe assembly comprises a pipe body and a noise reduction element arranged on the inner wall of the pipe body, and the inside of the noise reduction element is formed with a porous structure.

8. The phototherapy device of claim 7, wherein, The noise reduction element is configured in a tubular shape, the tubular noise reduction element covers the inner wall of the pipe body, and the lower part of the noise reduction element is sleeved on the outside of the adapter; or, The noise reduction element is arranged corresponding to the inner wall of the pipe body.

9. The phototherapy device of claim 7, wherein, When the gas supply pipe group supplies cold gas to the gas cavity, the outer surface and / or the inner surface of the noise reduction element are configured as a closed surface wrapping the porous structure.

10. The phototherapy device of claim 6, wherein, The adapter comprises a first pipe segment and a second pipe segment connected with each other, the first pipe segment is sleeved on the pipe assembly, and the first horn structure is configured as the pipe opening of the second pipe segment.

11. The phototherapy device of claim 10, wherein, The shell further has an air inlet cavity, the gas supply pipe group supplies the gas to the gas cavity through the air inlet cavity, the cross-sectional area of the air inlet cavity is smaller than the cross-sectional area of the gas cavity, and the second pipe segment at least partially extends into the air inlet cavity.

12. The phototherapy device of claim 11, wherein, A second horn structure is formed on the air inlet cavity, and the lower end of the second pipe segment is located below the root of the second horn structure.

13. The phototherapy device of claim 11, wherein, An annular groove is formed in the outer wall of the second pipe section, and a sealing ring is arranged in the annular groove, so that the second pipe section and the air inlet cavity are sealingly connected through the sealing ring.

14. The phototherapy device of any one of claims 1-3, wherein, The opening of the first horn structure is configured as a tapered widening opening, and the slope of the tapered surface of the tapered widening opening ranges from 1° to 20°.

15. The phototherapy device of any one of claims 1-3, wherein, The light therapy device is used for treating at least one of Alzheimer's disease and cognitive impairment.

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