Respirable face mask and its body structure

Abstract

A respirator and its body structure are disclosed. The body includes a main frame, a lens and a waterproof sealing skirt. The waterproof sealing skirt has a partition member separating the interior of the body into an upper chamber and a lower chamber. A bridge member spans across the lower chamber, separating the lower chamber into a nose chamber and a mouth chamber below the nose chamber. When the respirator is worn by a user, the user's nose is received in the nose chamber and the user's mouth is received in the mouth chamber. The nose chamber and the mouth chamber are in fluid communication through the bridge member.

Description

Technical Field

[0001] This invention relates to a full-face mask, and more particularly to a breathable mask for snorkeling. Background Technology

[0002] To allow for free breathing through the mouth and nose, and to ensure that users inhale as much clean air as possible while minimizing the mixing of exhaled dirty air with clean air before re-entering the next inhalation cycle, many current full-face snorkel masks (FFSMs) are divided into an upper chamber covering the eyes and a lower chamber covering the mouth and nose. This allows inhaled clean air to flow unidirectionally from the upper chamber to the lower chamber, while most of the exhaled dirty air is expelled through a separate exhaust duct. A portion of this exhaust duct is independently installed around the perimeter of the upper chamber and connects to the snorkel, allowing exhaled air to exit directly through the snorkel to the outside without lingering in the upper chamber. This prevents the air from being re-inhaled into the lower chamber during the next inhalation, thus avoiding the mixing of fresh air with carbon dioxide, as illustrated in patents such as US10,556,654B2 and US11,358,012B2.

[0003] However, with each inhalation and exhalation cycle, a certain amount of carbon dioxide-rich, dirty air inevitably remains in the exhaust duct and lower chamber. This dirty air is then inhaled along with clean air in the next inhalation cycle. Therefore, although the intake and exhaust systems are designed to be separate, the air inhaled with each breathing cycle is still not clean enough. Over extended periods of snorkeling, a considerable amount of carbon dioxide will accumulate in the mask. Furthermore, when the mask is actually used in the water, water inevitably accumulates in the lower chamber. Since the mouth and nose share the same chamber, when the user forcefully exhales through their mouth to try and expel the water through the drain valve, water splashes back into the nostrils, causing significant discomfort and even a feeling of choking. Therefore, this type of mask still has considerable room for improvement.

[0004] In addition, existing FFSMs require overcoming strong water pressure to drain water through the drain valve in the water, which is almost impossible. Therefore, it is still not possible to remove the water inside the mask by simply exhaling forcefully underwater. Users often need to lift their heads or stand up to remove the mask from the water surface and let the water drain down through the drain valve (located at the chin), which is extremely inconvenient, energy-consuming, and less enjoyable.

[0005] In view of this, the industry has reached a consensus on solving the above problems simultaneously or partially, making the separation of clean air intake and dirty air exhaust more reliable, effectively controlling manufacturing and assembly costs, and improving the overall strength of the mask. Summary of the Invention

[0006] One objective of this invention is to provide a breathable mask in which a bridging member is added to the lower chamber accommodating the mouth and nose, further dividing the lower chamber into a nasal chamber and an oral chamber. The intake airflow is guided to the nasal chamber, while the exhaust airflow is guided out from either the nasal or oral chamber. Furthermore, the nasal and oral chambers are conditionally connected, for example, by providing an opening or a one-way valve that only allows fluid to flow from the nasal chamber to the oral chamber. Simultaneously, the lower chamber, originally an independent cavity, is significantly strengthened due to the bridging member. This means that the front of the mask, in the mouth and nose area below the mirror, does not require numerous rigid components, such as a bracket connecting the mirror frame and the mouth frame covering the drain valve. The overall strength of the mask remains sufficient, and the soft nasal mask section will not collapse under water pressure during use.

[0007] Regarding the inhalation airflow path, when inhaling through the nose, fresh air enters the nasal chamber through the inhaler and directly into the user's nasal cavity. When inhaling through the mouth, fresh air enters the nasal chamber through the inhaler, then enters the oral chamber and enters the user's mouth. Regarding the exhalation airflow path, if the exhaust duct is connected to the nasal chamber, when exhaling through the nose, some stale air will pass through the exhaust duct and be expelled to the outside, while the remaining stale air will enter the oral chamber and then be drained into the water through the drain valve. When exhaling through the mouth, the stale air will be drained into the water through the drain valve and will not return to the nasal chamber. If the exhaust duct is connected to the oral chamber, when exhaling through the nose, stale air will first enter the oral chamber, with most passing through the exhaust duct and being expelled to the outside, while a small portion will be drained into the water through the drain valve. When exhaling through the mouth, some stale air will be expelled through the exhaust duct, and some will be drained into the water through the drain valve and will not return to the nasal chamber. Therefore, this design does not prevent the user from freely inhaling and exhaling through the nose or mouth. If the user chooses to inhale through the nose, because the inhalation and exhalation airflows are completely independent, the user will be able to inhale almost 100% fresh air; if the user chooses to inhale through the mouth, because the oral cavity is very small, the proportion of dirty air accumulated in the oral cavity is also greatly reduced, so it will not replace the large amount of fresh air coming from the nasal cavity through the bridging component.

[0008] To achieve the aforementioned objective, the present invention specifically provides a breathable face mask, comprising a main body and at least one breathing tube, the breathing tube being fluidly connected to an interior of the main body; the at least one breathing tube includes an inlet pipe and an outlet pipe independent of the inlet pipe; the main body includes: a main frame; a lens fitted within the main frame; and a waterproof sealing skirt, at least partially fitted with the main frame and the lens, the waterproof sealing skirt being adaptable to fit a user's face; wherein the waterproof sealing skirt has a spacer dividing the interior of the main body into an upper chamber and a lower chamber, and when the user wears the breathable face mask via a fastening device, the spacer is positioned at the user's nose, while the user's eyes are within... The mask is housed in the upper chamber, and the user's nose and mouth are housed in the lower chamber; an air intake passage is formed between the air intake pipe of the breathing tube and the lower chamber; an exhaust passage is formed between the lower chamber and the breathing tube; characterized in that: the waterproof sealing skirt further includes a bridging member spanning the lower chamber, dividing the lower chamber into a nasal chamber and a mouth chamber located below the nasal chamber, when the user wears the mask, the user's nose is housed in the nasal chamber, and the user's mouth is housed in the mouth chamber, the air intake passage is in fluid communication with the nasal chamber, the exhaust passage is in fluid communication with the mouth chamber or the nasal chamber, and the nasal chamber and the mouth chamber are in fluid communication through the bridging member.

[0009] Furthermore, in accordance with the aforementioned objectives, the present invention specifically provides a body structure for a breathable face mask, comprising: a main frame; a lens fitted within the main frame; and a waterproof sealing skirt, at least partially fitted with the main frame and the lens, the waterproof sealing skirt being adaptable to fit a user's face; wherein the waterproof sealing skirt has a spacer that divides the interior of the body into an upper chamber and a lower chamber, when the user wears the breathable face mask, the spacer is located at the user's nose, the user's eyes are accommodated in the upper chamber, and the user's nose and mouth are accommodated in the lower chamber; characterized in that: the waterproof sealing skirt further comprises a bridging member that spans across the lower chamber, dividing the lower chamber into a nasal chamber and a mouth chamber located below the nasal chamber, when the user wears the face mask, the user's nose is accommodated in the nasal chamber, and the user's mouth is accommodated in the mouth chamber, the nasal chamber and the mouth chamber being fluidly connected through the bridging member. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of airflow according to the first embodiment of the present invention; Figure 2 This is a schematic diagram of airflow according to the second embodiment of the present invention; Figure 3A This is a three-dimensional schematic diagram of the third embodiment of the present invention; Figure 3B for Figure 3AThe coronal profile obtained from line 3B-3B shows the intake and exhaust flows; Figure 4A This is a three-dimensional schematic diagram of the fourth embodiment of the present invention; Figure 4B for Figure 4A The coronal profile obtained from line 4B-4B shows the intake and exhaust flows; Figure 5A This is a three-dimensional schematic diagram of the fifth embodiment of the present invention; Figure 5B This is a front-view exploded perspective view of the fifth embodiment of the present invention, in which the drain valve is not shown; Figure 5C for Figure 5A The coronal profile obtained from line 5C-5C shows the intake and exhaust flows.

[0011] The attached figures are labeled as follows: 10, 20, 30, 40, 50 breathable face masks 11, 21, 31, 41, 51 body 12, 22, 32, 42, 52, 52a Breathing tubes 121, 221, 321, 421, 521 Intake pipes 122, 222, 322, 422, 522 exhaust pipes Main frames 13, 23, 33, 43, 53 Lenses 14, 24, 34, 44, 54 Waterproof sealing skirts in sizes 15, 25, 35, 45, and 55 151, 251, 351, 451, 551 bridging components 16, 26, 36, 46, 56 spacers 17, 27, 37, 47, 57 upper room 18, 28, 38, 48, 58 (lower room) 181, 281, 381, 481, 581 nasal chamber 182, 282, 382, ​​482, 582 oral cavity 161, 261, 361, 461, 561 First check valve 362, 562 Second Check Valve 255, 355, 455, 555 third check valve 152, 252, 352, 452, 552 openings Exhaust tunnels 153, 253, 353, and 453 Drain valves 19, 29, 39, 49, and 59 454 partition wall 523 top cover 531 frame 553 Nasal Mask Section Detailed Implementation

[0012] The following is the common structure of various embodiments. Therefore, the component numbers corresponding to each figure are systematically listed and explained. In the first, second, third, fourth and fifth embodiments, they are named with numbers starting with 1, 2, 3, 4 and 5 respectively, for clarity and conciseness.

[0013] like Figures 1 to 5CA breathable mask 10, 20, 30, 40, 50 includes a body 11, 21, 31, 41, 51 and at least one breathing tube 12, 22, 32, 42, 52, which is fluidly in communication with an interior of the body 11, 21, 31, 41, 51. The at least one breathing tube 12, 22, 32, 42, 52 includes an inlet tube 121, 221, 321, 421, 521 and an exhaust tube 122, 222, 322, 422, 522, independent of the inlet tube 121, 221, 321, 421, 521. The body 11, 21, 31, 41, 51 includes: a main frame 13, 23, 33, 43, 53; a lens 14, 24, 34, 44, 54 fitted within the main frame 13, 23, 33, 43, 53; and a waterproof sealing skirt 15, 25, 35, 45, 55, at least partially fitted with the main frame 13, 23, 33, 43, 53 and the lens 14, 24, 34, 44, 54. The waterproof sealing skirt 15, 25, 35, 45, 55 is adapted to fit the face of a user (not shown in the figure). The waterproof sealing skirt 15, 25, 35, 45, 55 has a spacer 16, 26, 36, 46, 56 that divides the interior of the body 11, 21, 31, 41, 51 into an upper chamber 17, 27, 37, 47, 57 and a lower chamber 18, 28, 38, 48, 58. When the user puts on the breathable mask 10, 20, 30, 40, 50 through a fastening device (usually an elastic headband connecting the two sides of the main frame 13, 23, 33, 43, 53, not shown in the figure), the spacers 16, 26, 36, 46, 56 are located at the user's nose, the user's eyes are housed in the upper chambers 17, 27, 37, 47, 57, and the user's nose and mouth are housed in the lower chambers 18, 28, 38, 48, 58. An air intake channel is formed from the air intake pipes 121, 221, 321, 421, 521 to the lower chambers 18, 28, 38, 48, 58; an exhaust channel is formed from the lower chambers 18, 28, 38, 48, 58 to the exhaust pipes 122, 222, 322, 422, 522. The lens, air intake pipe, exhaust pipe, air intake channel, and exhaust channel described above are optional, but their quantity is not limited. Preferably, the lens is an integrated left and right eye design, and there are two air intake pipes, two exhaust pipes, two air intake channels, and two exhaust channels, all in a symmetrical design.

[0014] The waterproof sealing skirts 15, 25, 35, 45, 55 further comprise a bridging member 151, 251, 351, 451, 551 that spans across the lower chamber 18, 28, 38, 48, 58, and divides the lower chamber 18, 28, 38, 48, 58 into a nose chamber 181, 281, 381, 481, 581 and a mouth chamber 182, 282, 382, 482, 582 located below the nose chamber. After the user puts on the face mask 10, 20, 30, 40, 50, the user's nose is accommodated in the nose chamber 181, 281, 381, 481, 581, and the user's mouth is accommodated in the mouth chamber 182, 282, 382, 482, 582. The intake channel is in fluid communication with the nose chamber 181, 281, 381, 481, 581, the exhaust channel is in fluid communication with the mouth chamber 182, 282, 382, 482, 582 or the nose chamber 181, 281, 381, 481, 581, and fluid communication between the nose chamber 181, 281, 381, 481, 581 and the mouth chamber 182, 282, 382, 482, 582 can be suitably achieved via the bridging member 151, 251, 351, 451, 551.

[0015] Reference Figure 1 , which is an individual explanatory schematic diagram of the first embodiment. The face mask 10 comprises a breathing tube 12, and the intake pipe 121 and the exhaust pipe 122 are arranged inside the breathing tube 12. A first one-way valve 161 is arranged in the intake channel, allowing inhaled air to enter the nose chamber 181 from the upper chamber 17 in one direction. Preferably, the first one-way valve 161 is arranged on the spacer 16; more preferably, a second one-way valve (not shown in the figure) can be arranged on the exhaust channel to ensure that exhaled air is discharged outward in one direction from the lower chamber 18 along the exhaust channel, and can further prevent dirty air accumulated in the exhaust channel from flowing back into the mouth chamber 182.

[0016] In this embodiment, the exhaust channel is in communication with the mouth chamber 182. At least one opening 152 is provided on the bridging member 151 (the number and shape of the openings are not limited). After the user puts on the face mask 10, fluid communication between the nose chamber 181 and the mouth chamber 182 can only be carried out through the opening 152. As shown in Figure 1 the hollow airflow line, when the user inhales through the nose, fresh air enters through the intake pipe 121 of the breathing tube 12, passes through the upper chamber 17, and enters the nose chamber 181 via the first one-way valve 161 for the nose to inhale into the body; when the user inhales through the mouth, the fresh air in the nose chamber 181 further passes through the opening 152 provided on the bridging member 151 and enters the mouth chamber 182 for the mouth to inhale into the body. As shown in Figure 1As shown by the solid airflow line, when a user exhales through the nose, dirty air first enters the mouth chamber 182 through the opening 152, and is then discharged outward through the exhaust tunnel 153 independently provided around the upper chamber 17 and the exhaust pipe 122 arranged in the breathing tube 12, wherein the exhaust tunnel 153 can be defined jointly by the waterproof sealing skirt 15 and the peripheral edge of the lens 14, for example. When exhaling through the mouth, dirty air is also discharged outward through the above exhaust tunnel 153 and the exhaust pipe 122 arranged in the breathing tube 12. When the user exhales forcefully through the mouth, due to the blocking of the bridging member 151, accumulated water in the mouth chamber 182 will be discharged through the drainage valve 19 without splashing back into the nose chamber 181 in a large amount, so that the nose area can be kept relatively dry and comfortable. Therefore, a user can inhale and exhale through either the nose or the mouth arbitrarily. Moreover, because the space of the mouth chamber 182 is very small, and more preferably, the drainage valve 19 can be arranged to directly face the user's mouth due to its design position, this design allows the user to overcome water pressure and drain water easily in water without needing to surface, which further saves physical strength.

[0017] Reference Figure 2 , which is an individual explanatory schematic diagram of the second embodiment. Similar to the first embodiment, the face mask 20 comprises a breathing tube 22, and the breathing tube 22 is provided with the air inlet pipe 221 and the exhaust pipe 222 therein. The air intake channel is provided with a first one-way valve 261, which allows inhaled air to enter the nose chamber 281 from the upper chamber 27 in one direction. Preferably, the first one-way valve 261 is arranged on the spacer 26, and more preferably, a second one-way valve (not shown in the figures) can be arranged on the exhaust channel to ensure that exhaled air is discharged outward in one direction from the lower chamber 28 along the exhaust channel, and can further prevent dirty air accumulated in the exhaust channel from flowing back into the mouth chamber 282.

[0018] In this embodiment, the exhaust channel is communicated with the mouth chamber 282. At least one opening 252 is provided on the bridging member 251 (the number and shape of the openings are not limited), and the bridging member 251 further comprises a third one-way valve 255 arranged on the opening 252, which allows inhaled air to enter the mouth chamber 282 from the nose chamber 281 in one direction. That is, after the user wears the face mask 20, fluid is only allowed to flow from the nose chamber 281 to the mouth chamber 282 through the third one-way valve 255. As Figure 2 shown by the hollow airflow line, when inhaling through the nose, fresh air enters through the air inlet pipe 221 of the breathing tube 22, passes through the upper chamber 27, and enters the nose chamber 281 through the first one-way valve 261 for the nose to inhale into the body; when inhaling through the mouth, fresh air in the nose chamber 281 further enters the mouth chamber 282 through the third one-way valve 255 for the mouth to inhale into the body. As Figure 2As shown by the solid airflow lines, when the user exhales through the nose, dirty air first enters the mouth chamber 282 via the third one-way valve 255, and is then discharged outward through the exhaust tunnel 253 independently provided on the periphery of the upper chamber 27, via the exhaust pipe 122 provided in the breathing tube 12, wherein the exhaust tunnel 253 can be defined jointly by the waterproof sealing skirt 25 and the peripheral edge of the lens 24, for example. When the user exhales through the mouth, dirty air is discharged outward along the above-mentioned exhaust tunnel 253 via the exhaust pipe 222 arranged in the breathing tube 22. When the user exhales forcefully through the mouth, due to the blocking of the bridging member 251 and the third one-way valve 255, accumulated water in the mouth chamber 282 is discharged through the drain valve 29 and will not splash back into the nose chamber 281, which keeps the nasal area dry and comfortable. Therefore, the user can inhale and exhale through either the nose or the mouth as desired. Moreover, since the space of the mouth chamber 282 is very small, and more preferably, the drain valve 29 can be arranged at a position directly facing the user's mouth, this design allows the user to overcome water pressure and drain water easily in water without needing to surface, thus saving more physical strength.

[0019] referring to Figure 3A and Figure 3B , which are separate explanatory schematic diagrams of the third embodiment. Similar to the second embodiment, the face mask 30 comprises a breathing tube 32, and the breathing tube 32 has the air inlet pipe 321 and the exhaust pipe 322 therein. The air intake passage is provided with a first one-way valve 361, which allows inhaled air to enter the nose chamber 381 unidirectionally from the upper chamber 37. Preferably, the first one-way valve 361 is arranged on the spacer 36, and more preferably, a second one-way valve 362 can be arranged on the exhaust passage, which ensures that exhaled air is discharged outward unidirectionally from the lower chamber 38 along the exhaust passage, and can further prevent dirty air accumulated in the exhaust passage from flowing back into the nose chamber 381.

[0020] In this embodiment, the exhaust passage is communicated with the nose chamber 381. At least one opening 352 is provided on the bridging member 351 (the number and shape of the openings are not limited), and the bridging member 351 further comprises a third one-way valve 355 arranged on the opening 352, which allows inhaled air to enter the mouth chamber 382 unidirectionally from the nose chamber 381. That is, after the user puts on the face mask 30, fluid is only allowed to flow from the nose chamber 381 to the mouth chamber 382 through the third one-way valve 355. As shown in Figure 3B the hollow airflow lines, when the user inhales through the nose, fresh air enters through the air inlet pipe 321 of the breathing tube 32, passes through the upper chamber 37, and enters the nose chamber 381 via the first one-way valve 361 for the nose to inhale into the body; when the user inhales through the mouth, fresh air in the nose chamber 381 further passes through the third one-way valve 355 and enters the mouth chamber 382 for the mouth to inhale into the body. As shown in Figure 3BAs shown by the solid air flow lines, when a user exhales through the nose, dirty air is discharged outward through the exhaust tunnels independently provided around the periphery of the upper chamber 37, via the exhaust pipe 322 disposed inside the breathing tube 32, wherein the exhaust tunnels 353 are defined jointly by the waterproof sealing skirt 35 and the periphery of the lens 34, for example. When exhaling through the mouth, dirty air is blocked by the third one-way valve 355 and will not return to the nose chamber 381. When a user exhales forcefully through the mouth, due to the blocking of the bridging member 351 and the third one-way valve 355, accumulated water in the mouth chamber 382 is discharged through the drain valve 39 and will not splash back into the nose chamber 381. In this way, the nasal area can be kept dry and comfortable. In this embodiment, therefore, the user can arbitrarily use the nose for inhaling and exhaling, and the mouth for inhaling. In this embodiment, since the dirty air exhaled by the mouth does not return to the nose chamber 381 and enter the next inhalation cycle of the nose, and when in water, the mouth cannot effectively participate in exhalation due to water pressure and the blocking of the third one-way valve 355, the user will subconsciously and naturally adopt nasal breathing and inhale purer fresh air, which naturally improves the durability and safety of snorkeling activities. In addition, because the space of the mouth chamber 382 is small, and more preferably, the drain valve 39 can be designed to be positioned directly facing the user's mouth, the design of this embodiment allows the user to overcome water pressure and drain water easily in water without having to surface, which further saves physical strength.

[0021] Reference Figure 4A and Figure 4B , which are respective explanatory schematic diagrams of the fourth embodiment. Similar to the second embodiment, the mask 40 includes a breathing tube 42, and the breathing tube 42 has the air inlet pipe 421 and the exhaust pipe 422 therein. The air inlet passage is provided with a first one-way valve 461, which allows inhaled air to enter the lower chamber 48 from the upper chamber 47 in one direction. In this embodiment, the first one-way valve 461 is transversely disposed at the lower outer side of the spacer 46. More preferably, a second one-way valve (not shown in the figures) may be provided on the exhaust passage, which ensures that exhaled air is discharged outward in one direction from the lower chamber 48 along the exhaust passage, and can further prevent dirty air accumulated in the exhaust passage from flowing back into the mouth chamber 482.

[0022] In this embodiment, the exhaust passage communicates with the mouth chamber 482. At least one opening 452 is provided on the bridging member 451 (the number and shape of the openings are not limited), and the bridging member 451 further comprises a third one-way valve 455 provided on the opening 452, which allows inhaled air to enter the mouth chamber 482 from the nose chamber 481 in one direction. That is, after the user puts on the mask 40, fluid is only allowed to flow from the nose chamber 481 to the mouth chamber 482 through the third one-way valve 455. As shown in Figure 4BAs shown by the hollow airflow lines, when the user inhales through the nose, fresh air enters from the air intake pipe 421 of the breathing tube 42, passes through the upper chamber 47, and enters the nasal chamber 481 via the first one-way valve 461 for the nose to inhale into the body; when the user inhales through the mouth, fresh air in the nasal chamber 481 further passes through the third one-way valve 455 and enters the oral chamber 482 for the mouth to inhale into the body. As Figure 4B shown by the solid airflow lines, when the user exhales through the nose, the stale air first enters the oral chamber 482 via the third one-way valve 455, then is discharged outwards through an exhaust tunnel 453 independently provided around the upper chamber 47 and an exhaust pipe 422 arranged in the breathing tube 42, wherein the exhaust tunnel 453 is for example defined together by the waterproof sealing skirt 45 and the peripheral edge of the lens 44; when the user exhales through the mouth, the stale air is also discharged outwards along the above exhaust tunnel 453 and via the exhaust pipe 422 arranged in the breathing tube 42. When the user exhales forcefully through the mouth, due to the barrier of the bridging member 451 and the third one-way valve 455, accumulated water in the oral chamber 482 is discharged through the drainage valve 49, and will not splash back into the nasal chamber 481 to cause discomfort to the nose. Therefore, the user can freely inhale and exhale through either the nose or the mouth. Moreover, because the space of the oral chamber 482 is very small, and more preferably, the drainage valve 49 can be designed to be positioned directly opposite the user's mouth, this design allows the user to easily drain water against water pressure while in water, without needing to surface, thereby saving more physical strength.

[0023] In order to further prevent stale air exhaled from the oral chamber 482 from mixing into the next inhalation cycle, in this embodiment, the air intake channel and the exhaust channel can be further isolated. Specifically, a partition wall 454 is provided in the inlet area of the exhaust channel, that is, outside the first one-way valve 461, and the partition wall 454 is joined with the spacer 46 and the bridging member 451 and integrally formed therewith, so as to further isolate the air exhaled from the oral chamber 482 from the intake air entering the nasal chamber 481.

[0024] Refer to Figure 5A , Figure 5B and Figure 5CThis is a schematic diagram illustrating a fifth embodiment. Unlike the breathing tubes in previous embodiments, in this embodiment, the mask 50 includes two breathing tubes 52 and 52a, one of which defines the inlet tube 521 and the other defines the exhaust tube 522. The exhaust tube 522 extends along the outer contour of the body 51 and is adjacent to the inlet tube 521, with its lower end waterproofly inserted into the mouth chamber 582 and communicating with it. Preferably, the exhaust tube 522 is sandwiched between one side of the main frame 53 and the waterproof sealing skirt 55 to achieve better positioning. The air intake channel is provided with a first one-way valve 561, allowing inhaled air to enter the nasal chamber 581 unidirectionally from the upper chamber 57. In this embodiment, the first one-way valve 561 lies horizontally on the lower outer side of the spacer 56. More preferably, a second one-way valve 562 can be provided on the exhaust passage, located at the top of the exhaust pipe 522 and fixed thereon with a top cover 523, providing a one-way outward discharge of dirty air from the chamber 582 along the exhaust pipe 522. Of course, an exhaust one-way valve (such as the second one-way valve 362 in the third embodiment, not shown in the figure of this embodiment) can also be added at the connection between the exhaust passage and the chamber 582, which can further prevent the dirty air accumulated in the exhaust passage from flowing back into the chamber 582.

[0025] In this embodiment, the exhaust passage is connected to the mouth chamber 582. The bridging member 551 has at least one opening 552 (the number and shape of the openings are not limited), and the bridging member 551 also includes a third one-way valve 555 disposed on the opening 552, allowing the inhaled air to enter the mouth chamber 582 unidirectionally from the nasal chamber 581. That is, when the user wears the mask 50, fluid is only allowed to flow from the nasal chamber 581 to the mouth chamber 582 through the third one-way valve 555. Figure 5C As shown in the hollow airflow diagram, when inhaling through the nose, fresh air enters from the inlet tube 521 of the breathing tube 52, passes through the upper chamber 57, and enters the nasal chamber 581 via the first one-way valve 561, allowing it to be inhaled through the nose. When inhaling through the mouth, the fresh air in the nasal chamber 581 passes through the third one-way valve 555 and enters the oral chamber 582, allowing it to be inhaled through the mouth. Figure 5CAs shown by the solid airflow lines, when exhaling through the nose, dirty air first enters the mouth chamber 582 through the third one-way valve 555, and then is discharged outward through the second one-way valve 562 via the exhaust pipe 522, which extends independently along the outer contour of the main body 51. When exhaling through the mouth, dirty air is directly discharged outward along the exhaust pipe 522 without interfering with the air intake pipe 521. When exhaling deeply through the mouth, due to the obstruction of the bridging member 551 and the third one-way valve 555, the water accumulated in the mouth chamber 582 is discharged through the drain valve 59, preventing it from splashing back into the nasal chamber 581, thus keeping the nose completely dry and comfortable. Therefore, the user can inhale and exhale freely using either the nose or the mouth. Moreover, because the space of the mouth chamber 582 is small, and more importantly, because the drain valve 59 is designed to be directly opposite the user's mouth, this design allows the user to overcome water pressure in the water and easily drain water without having to float to the surface, thus saving energy. In this embodiment, the air intake channel is inside the mask body 51, while the exhaust channel is outside the mask body 51, resulting in better isolation between the intake and exhaust. Moreover, since the air intake pipe 521 inside the breathing tube 52 does not need to share a tube with the exhaust pipe 522, the diameter of the air intake pipe 521 can be increased compared to the previous embodiments, allowing for a larger intake of fresh air and easier breathing.

[0026] As can be seen from the above embodiments, the focus of the present invention is actually the structure of the body 11, 21, 31, 42, 51 of the breathable face mask 10, 20, 30, 40, 50, which includes: a main frame 13, 23, 33, 43, 53; a lens 14, 24, 34, 44, 54 fitted within the main frame; and a waterproof sealing skirt 15, 25, 35, 45, 55, at least partially fitted with the main frame 13, 23, 33, 43, 53 and the lens 14, 24, 34, 44, 54. The waterproof sealing skirt 15, 25, 35, 45, 55 can fit snugly against a user's face. The waterproof sealing skirt 15, 25, 35, 45, 55 has a spacer 16, 26, 26, 46, 56 that divides the interior of the main body 11, 21, 31, 42, 51 into an upper chamber 17, 27, 37, 47, 57 and a lower chamber 18, 28, 38, 48, 58. When the user wears the breathable mask 10, 20, 30, 40, 50, the spacer 16, 26, 26, 46, 56 is located at the user's nose, the user's eyes are accommodated in the upper chamber 17, 27, 37, 47, 57, and the user's nose and mouth are accommodated in the lower chamber 18, 28, 38, 48, 58. More importantly, the waterproof sealing skirt 15, 25, 35, 45, 55 also includes a bridging member 151, 252, 351, 451, 551, spanning the lower chambers 18, 28, 38, 48, 58, dividing the lower chambers 18, 28, 38, 48, 58 into a nasal chamber 181, 281, 381, 481, 581 and a mouth chamber 182, 282, 382, ​​482, 582 located below the nasal chamber. When the user wears the mask, the user's nose is accommodated in the nasal chambers 181, 281, 381, 481, 581, and the user's mouth is accommodated in the mouth chambers 182, 282, 382, ​​482. In 582, the nasal chambers 181, 281, 381, 481, 581 and the oral chambers 182, 282, 382, ​​482, 582 are fluidly connected through the bridging members 151, 252, 351, 451, 551, and preferably, are in unidirectional fluid communication from the nasal chambers to the oral chambers.

[0027] The human body has certain inherent natural mechanisms that automatically favor environments with fresh air and avoid those with polluted air. Therefore, underwater, if breathing is restricted to the nose and only the mouth is available, the body's physiological mechanisms, without training, will automatically raise the soft palate to block nasal breathing and switch to mouth breathing in order to sustain life. Traditional snorkeling equipment uses a diving mask to cover the eyes and nose, prohibiting nasal breathing, and a separate snorkel for mouth breathing; this mechanism is what enables this. Of course, if breathing is possible both through the nose and mouth, the user will choose either method, but usually only one method can be used as the primary method; both cannot be used simultaneously. This is another natural physiological tendency. Furthermore, if in an environment where the nose is more likely to draw in fresh air than the mouth, the brain will subconsciously and naturally command the user to breathe through the nose (at which point the soft palate lowers), achieving a comfortable breathing pattern with higher oxygen levels—that is, inhaling through the nose. The reverse is also true. Therefore, in any of the above-described embodiments, although breathing through the mouth or nose is feasible, the nasal chamber is the first chamber where fresh air enters the mask and is provided for inhalation. Furthermore, it contains almost no stale air from the previous mouth exhalation. Therefore, inhaling through the nose naturally becomes the most comfortable choice for the user, further highlighting the advantages of this invention. Taking the fourth and fifth embodiments as examples, if the user inhales through the nose, regardless of whether they exhale through the mouth or nose, any remaining stale air will be retained in the nasal chamber and the exhaust channel. Since the exhaust channel is completely separate from and does not share the intake channel, the fresh air entering from the outside will be provided to the user with 100% purity. This is an effect that existing technologies cannot achieve.

[0028] The exhaust pipes, exhaust tunnels, or exhaust channels mentioned in the above embodiments are preferably designed with bilateral symmetry. However, for clarity and simplicity, only one of them is described and claimed, and it is not intended to limit the number of them. In addition, the technical concept of dividing the lower chamber into a nasal chamber and an oral chamber by a bridging component can be used in any form of full-face mask. The present invention focuses on one type of breathable mask (see specific references). Figure 5BAs shown, the main frame 53 and lens 54 only cover the user's eyes, while the user's nose and mouth are mainly covered by the waterproof sealing skirt 55. Additionally, a mouth frame 531, independent of the main frame 53 and lens 54, is added, and a drain valve 59 is placed behind the mouth frame 531, so that the soft nose mask portion 553 protrudes outward between the main frame 53 and the mouth frame 531. This is an illustrative example. Any variations based on the concept of this invention, such as the number, type, and position of the inlet and outlet pipes, the exhaust channel, the number and style of the first or second one-way valve, the number and style of the lenses (one-piece or left / right separate), or the connection between the exhaust channel and the nasal or oral chamber, should not be limited. As long as it is an inlet and outlet separation structure, regardless of the type of mask, it falls within the scope of this invention and should not be construed as limiting the claims in the final paragraph.

Claims

1. A breathable mask comprising a body and at least one breathing tube, the at least one breathing tube being fluidly in communication with an interior of the body; the at least one breathing tube comprising an inlet pipe and an outlet pipe independent of the inlet pipe, the body comprising: One main frame; A single lens, fitted into the main frame; A waterproof sealing skirt, at least partially fitted with the main frame and lens, is adapted to fit a user's face; wherein the waterproof sealing skirt has a spacer that divides the interior of the body into an upper chamber and a lower chamber, wherein when the user wears a breathable mask through a fastening device, the spacer is located in the user's nose, the user's eyes are accommodated in the upper chamber, and the user's nose and mouth are accommodated in the lower chamber. An air intake passage forms a path from the intake pipe to the lower chamber; An exhaust passage forms from the lower chamber to the exhaust pipe; Its features are: The waterproof sealing skirt also includes a bridging element that spans the lower chamber, dividing the lower chamber into a nasal chamber and a mouth chamber located below the nasal chamber. The bridging element has at least one opening. When the user wears the mask, the user's nose is accommodated in the nasal chamber and the user's mouth is accommodated in the mouth chamber. The air intake passage is in fluid communication with the nasal chamber and is equipped with a first one-way valve to allow inhaled air to enter the nasal chamber unidirectionally from the upper chamber. The exhaust passage is in fluid communication with the mouth chamber or the nasal chamber, and the nasal chamber and the mouth chamber are in fluid communication through at least one opening on the bridging element.

2. The breathable face mask as described in claim 1, characterized in that, The mask includes a breathing tube containing an inlet tube and an outlet tube.

3. The breathable face mask as described in claim 2, characterized in that, The first check valve is located on the spacer.

4. The breathable face mask as described in claim 3, characterized in that, The exhaust passage is equipped with a second one-way valve, which allows the exhaust air to be discharged outward from the lower chamber along the exhaust passage.

5. The breathable face mask as described in claim 3, characterized in that, The exhaust passage is in fluid communication with the chamber.

6. The breathable face mask as described in claim 5, characterized in that, The bridging component also includes a third one-way valve located on at least one opening, providing one-way access of inhaled air from the nasal chamber to the oral chamber.

7. The breathable face mask as described in claim 1, characterized in that, The exhaust passage is connected to the nasal cavity.

8. The breathable face mask as described in claim 7, characterized in that, The exhaust passage is equipped with a second one-way valve, which allows exhaled air to be discharged outward from the nasal chamber along the exhaust passage.

9. The breathable face mask as described in claim 7, characterized in that, The bridging component also includes a third one-way valve located on at least one opening, providing one-way access of inhaled air from the nasal chamber to the oral chamber.

10. The breathable face mask as claimed in claim 1, characterized in that, The exhaust passage is connected to the chamber, and the first one-way valve lies horizontally on the outside of the spacer.

11. The breathable face mask as described in claim 10, characterized in that, The exhaust passage is equipped with a second one-way valve, which allows the exhaust air to be discharged from the mouth chamber along the exhaust passage.

12. The breathable face mask as described in claim 10, characterized in that, A partition wall is installed in the inlet area of ​​the exhaust channel, which is integrated with the spacer and bridging member to further isolate the air exhaled from the oral chamber from the air inhaled into the nasal chamber.

13. The breathable face mask as described in claim 10, characterized in that, The bridging component also includes a third one-way valve located on at least one opening, providing one-way access of inhaled air from the nasal chamber to the oral chamber.

14. The breathable face mask as claimed in claim 1, characterized in that, The mask includes two breathing tubes, one of which defines an inlet tube and the other defines an outlet tube; the outlet tube extends along the outer contour of the body and is adjacent to the inlet tube, with its lower end waterproofly inserted into the mouth chamber and communicating with the mouth chamber.

15. The breathable face mask as described in claim 14, characterized in that, The first check valve is positioned horizontally on the outer side below the spacer.

16. The breathable face mask as described in claim 14, characterized in that, The exhaust pipe is clamped between one side of the main frame and the waterproof sealing skirt.

17. The breathable face mask as described in claim 14, characterized in that, At the top of the exhaust pipe, there is a second one-way valve that allows the exhaust air to be discharged outward from the mouth chamber along the exhaust pipe.

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