JP2021194235A - Virus removing device - Google Patents

Abstract

To provide a technology on a virus removing device for preventing virus infection through droplets, which can be worn for a long time.SOLUTION: The virus removing device can cover the mouth and nose of a wearer, and includes a mask part for blocking the flow of air, a supply passage communicated with a first space between the mouth and nose of the wearer and the mask part for supplying air to the space, a discharge passage communicated with the first space for discharging the air in the first space, and an ultraviolet irradiation mechanism for emitting an ultraviolet ray to at least one of the air supplied to the first space through the supply passage and the air discharged from the first space through the discharge passage.SELECTED DRAWING: Figure 1

Description

The techniques disclosed herein relate to virus removal devices.

Masks are worn to prevent droplet transmission of the virus. When the wearer of the mask covers the mouth and nose with the mask, the mask acts as a filter to reduce the amount of aerosol that the wearer inhales into the body with inspiration, and the aerosol that the wearer expels into the atmosphere with exhalation. The amount of is reduced. The virus floats in the atmosphere in the aerosol, which is a very small droplet. As a type of mask, a cloth mask, a non-woven fabric mask and the like are known. For example, Patent Document 1 discloses an example of a non-woven fabric mask.

International Publication No. 2018/151058

Aerosols with a diameter of less than 5 μm are light and therefore float in the atmosphere for long periods of time, however, aerosols with a diameter of less than 1 μm will soon lose water and the virus contained therein will be neutralized. Therefore, it is considered that it is an aerosol having a diameter of about 1 to 5 μm that is sucked from the mouth or nose and reaches the alveoli at the end of the bronchi to establish a viral infection.

Since the diameter of the aerosol that establishes the virus infection is approximately 1 to 5 μm, theoretically, the size of the gap between the fibers of the non-woven fabric mask or the cloth mask should be less than 1 μm. However, the smaller the gap between the fibers of the mask, the greater the resistance of the mask to the air flow. Therefore, wearing a mask with small fiber gaps requires extra work on the respiratory muscles to ensure adequate ventilation. That is, labored breathing is required.

The performance of the mask is shown by the collection rate of test particles with a diameter of 0.3 μm. For example, it is known that a mask capable of collecting 95% or more of test particles is called an N95 mask. The fine mesh of the N95 mask almost completely blocks the passage of aerosols. However, fine-grained masks also limit air flow, so extra work must be done on the respiratory muscles to ensure adequate ventilation when wearing the N95 mask. That is, labored breathing is required. Therefore, the time during which the N95 mask can be continuously worn is, for example, only about 20 minutes. However, even so, N95 masks have to be used in infected areas of medical institutions. On the other hand, the gap between the fibers of the non-woven fabric mask and the cloth mask generally used in the city is about 5 μm. Such masks have very few restrictions on air flow, so as long as you wear such a mask, you will have sufficient ventilation without labored breathing, but the aerosol will pass through.

The present specification discloses a technique relating to a virus removing device that can be worn for a long time while preventing virus droplet infection.

The virus removing device disclosed herein can cover the wearer's mouth and nose, and is a first space between the mask portion that blocks the flow of air and the wearer's mouth and nose and the mask portion. A supply path that communicates with the air and supplies air into the space, an exhaust path that communicates with the first space and discharges the air in the first space, an air that passes through the supply path and is supplied to the first space, and It is provided with an ultraviolet irradiation mechanism for irradiating at least one of the air discharged from the first space through the discharge path with ultraviolet rays.

In the above-mentioned virus removing device, the ultraviolet irradiation mechanism emits ultraviolet rays to the air passing through the path communicating with the space between the wearer's mouth and nose and the mask portion (that is, at least one of the supply path and the discharge path). Irradiate. As a result, the virus in the air supplied to the space or discharged from the space is removed by the ultraviolet rays. Therefore, it is possible to prevent virus infection to the wearer or virus infection from the wearer to another person. In addition, air is sufficiently circulated in the space through the supply path and the discharge path. Therefore, it is possible to prevent the wearer from becoming stuffy and prevent the wearing time from being limited.

The figure which shows the schematic structure of the virus removal apparatus which concerns on Example.

The main features of the examples described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are limited to the combinations described in the claims at the time of filing. It's not a thing.

In the virus removing device disclosed in the present specification, the ultraviolet irradiation unit may be composed of an ultraviolet irradiation space through which air flows and an ultraviolet irradiation mechanism for irradiating the air flowing through the flow path with ultraviolet rays. The ultraviolet generation mechanism irradiates the ultraviolet irradiation space with ultraviolet rays having a wavelength of, for example, 100 to 280 nm (so-called UV-C) from a light source. Ultraviolet light (eg, UV-C) is known to neutralize many types of viruses.

In the virus removing device disclosed herein, the ultraviolet irradiation mechanism may include a reservoir that stores air to form a second space. A reflective material that reflects ultraviolet rays may be provided on the inner surface of the storage portion. According to such a configuration, since the ultraviolet rays irradiated in the storage portion are reflected in the storage portion, the aerosol in the second space is more efficiently irradiated with the ultraviolet rays.

The virus removing device disclosed in the present specification further includes a pressure fluctuation flattening mechanism that flattens the fluctuation of the pressure in the second space due to the wearer's breathing. The air pressure fluctuation flattening mechanism suppresses the air pressure fluctuation in the ultraviolet irradiation mechanism due to the wearer's breathing. As a result, the flow of air in the ultraviolet irradiation mechanism is suppressed, and the air in the ultraviolet irradiation mechanism can be irradiated with ultraviolet rays for a sufficient time. In the ultraviolet irradiation mechanism, the second space is continuously irradiated with ultraviolet rays. Therefore, with a slight air flow, the aerosol that has flowed in from the atmosphere is exposed to ultraviolet light, and if the virus is present in the aerosol, the virus is neutralized. On the other hand, the exhaled air containing the aerosol discharged by the wearer passes through the discharge path from the first space (the space between the mask portion and the face) to reach the atmospheric pressure fluctuation flattening mechanism, and a part of it becomes the ultraviolet irradiation mechanism. It circulates, is irradiated with ultraviolet rays here, and is discharged into the atmosphere by riding a slight air flow. At that time, in the ultraviolet irradiation mechanism, if the virus is present in the aerosol, the virus is incapacitated before being excreted in the atmosphere.

In the virus removal apparatus disclosed herein, the barometric pressure fluctuation flattening mechanism may include a bag-shaped air accommodating portion made of a stretchable air-impermeable membrane material, and the air accommodating portion is numerous. It may be housed in a protective section, which is a container having a hole for communicating with the air. The volume of the barometric pressure fluctuation flattening mechanism may be up to the tidal volume of a person with a large body and the lower limit of the tidal volume of a person with a small body so that it can be used by both a large person and a small person. May be. Generally, a person's tidal volume (mL) is considered to be a value obtained by multiplying an ideal body weight (kg) by 6 to 8. For example, assuming that the ideal body weight of the person with the smallest body among those who use the virus removal device disclosed in the present specification is 40 kg, the tidal volume is 40 kg × 6 = 240 mL. On the other hand, assuming that the ideal body weight of the person who wears the virus removing device disclosed in the present specification is 100 kg, the tidal volume is 100 kg × 8 = 800 mL. Therefore, the volume of the barometric pressure fluctuation flattening mechanism of the virus removing device disclosed in the present specification may be 240 to 800 mL. In this configuration, the flow of air through the UV irradiation mechanism that should occur with respiration is eliminated by the contraction and expansion of the barometric pressure fluctuation flattening mechanism. Therefore, in the ultraviolet irradiation mechanism, the air flow almost disappears. Therefore, a small amount of aerosol that has flowed into the UV irradiation mechanism will be exposed to UV light for a longer period of time.

In the virus removing device disclosed in the present specification, the air flow passage connecting the first space (the space between the mask portion and the face) and the pressure fluctuation flattening mechanism is directed from the second space to the first space. It may be composed of a supply path in which air flows in one direction and an discharge path in which air flows in one direction from the first space to the second space. In such a configuration, the air that the wearer inhales into the body and the air that the wearer expels from the body do not mix in the air flow passage.

In the virus removing device disclosed in the present specification, the ultraviolet irradiation mechanism and the outside may be separated by a boundary film (for example, cloth or non-woven fabric) through which oxygen and carbon dioxide flow. In such a configuration, the boundary film that separates the ultraviolet irradiation mechanism from the outside acts as a resistance to the air flow, so that the pressure fluctuation flattening mechanism more effectively suppresses the air flow of the ultraviolet irradiation mechanism, and thus the ultraviolet irradiation. The irradiation time of ultraviolet rays to the aerosol in the air flowing through the mechanism becomes longer. On the other hand, the slowing of the air flow of the ultraviolet irradiation mechanism means that the air flow passing through the boundary film is also reduced. However, for oxygen that must be taken in from the atmosphere and carbon dioxide that must be discarded in the atmosphere, the mechanism of passing through the membrane is diffused, so even if the airflow through the boundary membrane shrinks, it will pass through the membrane. There is no problem with. It should be noted that the aerosol does not diffuse and the mechanism by which the aerosol passes through the boundary membrane is the flow of air, so when the airflow through the boundary membrane is reduced, the amount of aerosol that passes through the boundary membrane decreases.

The virus removing device 10 according to this embodiment will be described with reference to the drawings. As shown in FIG. 1, the virus removing device 10 includes a mask 12, a supply pipe 14, a discharge pipe 18, an ultraviolet irradiation unit 30, and a pressure fluctuation flattening unit 40.

The mask 12 has a shape that covers the mouth and nose of the user of the virus removing device 10. In the following, the user of the virus removing device 10 may be referred to as a "user" or a "wearer" because he / she wears the mask 12. The mask 12 is made of a material that does not allow air to pass through, for example, is made of plastic. The mask 12 has a dome shape, and the end portion of the mask 12 has a shape that is in close contact with the wearer's mouth and nose when the wearer wears the mask 12. When the wearer wears the mask 12, a space having a predetermined volume (hereinafter, also referred to as a space inside the mask 12) is provided between the mask 12 and the wearer, and the space inside the mask 12 and the outside of the mask 12 are formed. The flow of air is cut off between them. A supply pipe 14 and a discharge pipe 18 are connected to the mask 12, and the space inside the mask 12 communicates with the supply pipe 14 and the discharge pipe 18.

In the supply pipe 14, one end 14a communicates with the space in the mask 12, and the other end 14b communicates with the ultraviolet irradiation unit 30 (specifically, the storage unit 32 described later). The supply pipe 14 supplies the air in the ultraviolet irradiation unit 30 to the space in the mask 12. A check valve 16 is installed in the vicinity of the end portion 14a of the supply pipe 14. The check valve 16 is installed so that air can move from the ultraviolet irradiation unit 30 to the space inside the mask 12. That is, the check valve 16 is installed so as to prevent air from moving (backflow) from the space inside the mask 12 into the supply pipe 14. Therefore, the air in the supply pipe 14 flows into the space inside the mask 12 through the check valve 16, while the check valve 16 prevents the air from flowing into the supply pipe 14 from the space inside the mask 12. There is. In this embodiment, the check valve 16 is installed in the supply pipe 14, but it suffices if it is configured so as to prevent the movement of air from the space inside the mask 12 into the supply pipe 14. The composition is not limited.

In the discharge pipe 18, one end 18a communicates with the space in the mask 12, and the other end 18b communicates with the pressure fluctuation flattening portion 40. The discharge pipe 18 discharges air from the space inside the mask 12 to the pressure fluctuation flattening unit 40. A check valve 20 is installed in the vicinity of the end portion 18a on the mask 12 side of the discharge pipe 18. The check valve 20 allows air to move from the space inside the mask 12 to the pressure fluctuation flattening unit 40, that is, air moves (backflow) from the pressure fluctuation flattening unit 40 to the space inside the mask 12. It is installed to prevent. Therefore, the air in the mask 12 flows out to the outside through the discharge pipe 18 via the check valve 20, while the air in the mask 12 passes through the discharge pipe 18 from the pressure fluctuation flattening portion 40 by the check valve 20. It is prevented from flowing into the space. In this embodiment, the check valve 20 is installed in the discharge pipe 18, but it may be configured so as to prevent external air from moving from the discharge pipe 18 to the space inside the mask 12. , The specific configuration is not limited.

The ultraviolet irradiation unit 30 includes a storage unit 32, a light source 34, and a reflective material 36. The storage unit 32 has a cylindrical shape, and the space inside the storage unit 32 communicates with the outside, the space inside the pressure fluctuation flattening unit 40, and the supply pipe 14. A boundary film 38 is arranged on the end surface between the storage portion 32 and the outside. The boundary film 38 is formed of a film having pores through which oxygen and carbon dioxide can flow, and is, for example, a non-woven fabric. A through hole 46 is provided on the end surface opposite to the end surface between the storage portion 32 and the outside, and communicates with the space inside the atmospheric pressure fluctuation flattening portion 40 through the through hole 46.

The light source 34 is configured to irradiate the air in the reservoir 32 with ultraviolet rays. The light source 34 irradiates, for example, light having a wavelength of 100 to 280 nm (so-called UV-C). Irradiation with ultraviolet light (eg, UV-C) is known to neutralize many types of viruses. By irradiating the space inside the storage unit 32 with the ultraviolet rays emitted by the light source 34, the air inside the storage unit 32 is irradiated with the ultraviolet rays. As a result, the virus in the air in the reservoir 32 is removed. In this embodiment, the light source 34 emits light having a wavelength of 100 to 280 nm (that is, UV-C), but the wavelength of the ultraviolet rays emitted from the light source 34 is not particularly limited. Ultraviolet rays having a wavelength suitable for the type of virus to be removed can be used.

The reflective material 36 is arranged along the inner surface of the reservoir 32. In this embodiment, the reflector 36 is a mirror. By arranging the reflective material 36 on the inner surface of the storage unit 32, the ultraviolet rays irradiated to the storage unit 32 are reflected by the reflective material 36, and the air in the storage unit 32 is not only the ultraviolet rays emitted from the light source 34 but also the ultraviolet rays. , The ultraviolet rays reflected by the reflective material 36 are also irradiated. Therefore, the air in the reservoir 32 is irradiated with ultraviolet rays and the reflected light a plurality of times, and the effect of removing the virus can be improved. In this embodiment, a mirror is used as the reflective material 36, but the reflective material 36 may be a member that reflects ultraviolet rays, and the type thereof is not limited.

The atmospheric pressure fluctuation flattening unit 40 is arranged between the discharge pipe 18 and the ultraviolet irradiation unit 30. The atmospheric pressure fluctuation flattening unit 40 includes a gas accommodating unit 42 and a protective unit 44.

The gas accommodating portion 42 has a cylindrical shape and can accommodate air inside. The gas accommodating portion 42 is formed of an elastic member that can be expanded and contracted while blocking the flow of air. The gas accommodating portion 42 is formed of, for example, a rubber film. The gas accommodating unit 42 communicates with the storage unit 32 and the discharge pipe 18. Specifically, the gas accommodating unit 42 communicates with the space in the storage unit 32 through the through hole 46 provided in the storage unit 32. Further, the supply pipe 14 penetrates the gas accommodating portion 42 and the through hole 46 and extends to the space inside the storage portion 32. The end portion 18b of the discharge pipe 18 is connected to the gas accommodating portion 42 at a position facing the surface to which the storage portion 32 is connected.

In this embodiment, the storage unit 32 communicates with the gas accommodating unit 42 and also communicates with the supply pipe 14. That is, the storage unit 32 is connected (communication) to the gas accommodating unit 42 at the end surface opposite to the end surface communicating with the outside. The storage unit 32 communicates with the space inside the mask 12 through the supply pipe 14. In such a configuration, the air supplied to the space in the mask 12 is supplied from the storage unit 32 via the supply pipe 14, and the air discharged from the space in the mask 12 is supplied through the discharge pipe 18. It is discharged to the gas accommodating portion 42. Therefore, the exhaled air discharged to the gas accommodating portion 42 through the discharge pipe 18 is suppressed from being re-inhaled through the supply pipe 14 as it is. As for the air sucked (or re-sucked) through the supply pipe 14, oxygen is supplied from the outside through the boundary membrane 38 together with the exhaled air moved from the gas accommodating portion 42, and the air in which carbon dioxide is discharged to the outside through the boundary membrane 38 is discharged. It will be in a mixed state. Further, since the gas accommodating portion 42 is expandable and contractable and communicates with the discharge pipe 18 and also communicates with the supply pipe 14 via the storage portion 32, the gas accommodating portion 42 contracts when the wearer takes in air and exhausts. Expand. This eliminates the flow of air through the boundary membrane 38 that should occur with breathing. Therefore, the air in the storage unit 32 can be irradiated with ultraviolet rays for a sufficient time.

It is desirable that the volume of the gas accommodating portion 42 is a size that can be used by almost all people regardless of the size of the wearer's body. Therefore, the lower limit of the volume of the gas accommodating portion 42 is set according to the one-time ventilation volume of a person with a small body, and the upper limit of the volume of the gas accommodating portion 42 is the one-time ventilation volume of a person with a large body. Set according to. Generally, a person's tidal volume (mL) is considered to be a value obtained by multiplying an ideal body weight (kg) by 6 to 8. For example, assuming that the ideal body weight of a person with a small body is 40 kg, the one-time ventilation volume of a person with a small body is about 240 mL (40 kg × 6 = 240 mL). Assuming that the ideal body weight of a person with a large body is 100 kg, the one-time ventilation volume of a person with a large body is about 800 mL (100 kg × 8 = 800 mL). Therefore, the gas accommodating portion 42 is formed so that its volume is about 240 mL at the time of contraction and about 800 mL at the time of expansion. As a result, the air flow due to the wearer's breathing is absorbed by the contraction and expansion of the gas accommodating portion 42, and the ultraviolet irradiation portion 30 arranged on the outer side of the atmospheric pressure fluctuation flattening portion 40 is due to the wearer's breathing. Fluctuations in air flow no longer occur.

The protective portion 44 has a cylindrical shape and is arranged so as to cover the gas accommodating portion 42. The protective portion 44 is provided with a large number of holes through which external air can flow. As a result, the air pressure in the space between the protection unit 44 and the gas accommodating unit 42 becomes equal to the outside pressure. Therefore, the protective unit 44 can protect the gas accommodating unit 42 without hindering the contraction / expansion of the gas accommodating unit 52.

When the wearer inhales, air flows out from the storage unit 32 to the space inside the mask 12 through the supply pipe 14, and the pressure fluctuation flattening unit 40 connected to the storage unit 32 contracts. Therefore, the decrease in air pressure in the pressure fluctuation flattening unit 40 and the storage unit 32 connected to the pressure fluctuation flattening unit 40 due to intake air is suppressed. On the other hand, when the wearer exhales, air flows into the pressure fluctuation flattening portion 40 from the space inside the mask 12 through the discharge pipe 18, and the pressure fluctuation flattening portion 40 expands. Therefore, the increase in atmospheric pressure in the atmospheric pressure fluctuation flattening unit 40 and the storage unit 32 connected to the atmospheric pressure fluctuation flattening unit 40 due to exhalation is suppressed. As described above, in the virus removing device 10 of the present embodiment, the air pressure in the air pressure fluctuation flattening unit 40 and the storage unit 32 connected to the air pressure fluctuation flattening unit 40 hardly changes due to respiration, so that the air flow through the boundary membrane 38 is almost the same. Disappear. Also, while the wearer is exhaling, that is, during exhalation, the air flow in the reservoir 32 is stopped, so that the air that the wearer will inhale next will be in the reservoir for a longer period of time. They will stay within 32 and be exposed to UV light for a longer period of time. By providing the atmospheric pressure fluctuation flattening unit 40 in this way, the invasion of the aerosol containing the virus from the outside is prevented to a minimum, and almost all the virus in the slightly invaded aerosol is neutralized by the ultraviolet irradiation unit 30. Can be done.

Further, as described above, the ultraviolet irradiation unit 30 (specifically, the storage unit 32) and the outside (atmosphere) are separated by a boundary film 38 having pores. Since the boundary film 38 resists the flow of air, the boundary film 38 helps the pressure fluctuation flattening portion 40 to absorb the air pressure. That is, when the boundary membrane 38 is installed, the fluctuation of the air pressure in the reservoir 32 almost disappears, and the air flow through the boundary membrane 38 disappears. Further, while the wearer is exhaling, that is, during exhalation, the pressure fluctuation flattening unit 40 (specifically, the gas accommodating unit 42) expands, and therefore, during exhalation, the gas accommodating unit 42 The air does not flow into the storage unit 32, and the air flow in the storage unit 32 is stopped.

The fact that the fluctuation of the air pressure in the reservoir 32 almost disappears means that the air flow through the boundary membrane 38 also disappears. By the way, oxygen and carbon dioxide pass through the boundary membrane 38 by molecular motion, that is, by diffusing action. That is, oxygen and carbon dioxide move through the boundary membrane 38 even if there is no airflow through the boundary membrane 38. However, the aerosol does not undergo molecular motion due to its large size, and therefore the movement of the aerosol through the boundary membrane 38 depends solely on the airflow through the boundary membrane 38. That is, if the air flow in the reservoir 32 is reduced, the amount of aerosol in the atmosphere containing the virus in the reservoir 32 is reduced. Similarly, if the fluctuation in air pressure in the reservoir 32 is almost eliminated, the movement of the aerosol containing the virus discharged by the wearer into the atmosphere also disappears. Furthermore, if the flow of air in the reservoir 32 is stopped during exhalation, the small amount of aerosol that has migrated from the atmosphere and the aerosol that the wearer has discharged from the body will be retained for a longer period of time. It floats in the part 32 and is therefore exposed to ultraviolet rays for a longer period of time.

In this embodiment, the atmospheric pressure fluctuation flattening unit 40 is arranged between the ultraviolet irradiation unit 30, the supply pipe 14, and the discharge pipe 18, but the configuration is not limited to this. The virus removing device may not be provided with the atmospheric pressure fluctuation flattening unit 40. For example, the wall of the ultraviolet irradiation unit 30 is made of a stretchable film that is not deteriorated by ultraviolet rays, so that the ultraviolet irradiation unit 30 is provided. However, it may also serve as a function of the pressure fluctuation flattening device. Further, although one end of the supply pipe 14 is arranged in the storage unit 32, it may be connected to, for example, the gas storage unit 42.

Further, in this embodiment, both the supply pipe 14 and the discharge pipe 18 are connected to the ultraviolet irradiation unit 30, but the configuration is not limited to this. For example, only one of the supply pipe 14 and the discharge pipe 18 may be connected to the ultraviolet irradiation unit 30. When the supply pipe 14 is connected to the ultraviolet irradiation unit 30, the virus supplied from the supply pipe 14 to the mask 12 is removed. Therefore, it is possible to supply the wearer with air from which the virus has been removed, and it is possible to prevent the wearer from being infected with the virus. When the discharge pipe 18 is connected to the ultraviolet irradiation unit 30, the virus in the discharge pipe 18 is removed. Therefore, it is possible to prevent the virus contained in the exhaled breath from being released to the outside, and it is possible to prevent the wearer from infecting another person with the virus. In this way, the configuration of the virus removal device may be appropriately selected according to the purpose.

The points to be noted about the virus removing device 10 described in the examples will be described. The mask 12 of the embodiment is an example of the “mask portion”, the supply pipe 14 is an example of the “supply path”, and the check valve 16 is an example of the “first backflow prevention mechanism”, and the discharge pipe. Reference numeral 18 is an example of the “discharge path”, the check valve 20 is an example of the “second backflow prevention mechanism”, and the ultraviolet irradiation unit 30 is an example of the “ultraviolet irradiation mechanism”, and the pressure fluctuation is flattened. The part 40 is an example of the “atmospheric pressure fluctuation flattening mechanism”, and the boundary film 38 is an example of the “film”.

Although specific examples of the disclosed techniques have been described in detail in the present specification, these are merely examples and do not limit the scope of claims. The techniques described in the claims include various modifications and modifications of the specific examples exemplified above. Further, the technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques exemplified in the present specification or the drawings achieve a plurality of purposes at the same time, and achieving one of the purposes itself has technical usefulness.

10: Virus removal device 12: Mask 14: Supply pipe 16: Check valve 18: Discharge pipe 20: Check valve 30: Ultraviolet irradiation part 32: Storage part 34: Light source 36: Reflective material 38: Boundary film 40: Pressure fluctuation Flattening part 42: Gas accommodating part 44: Protecting part

Claims (9)

A mask part that can cover the wearer's mouth and nose and block the flow of air,
A supply path that communicates with the first space between the wearer's mouth and nose and the mask portion and supplies air into the first space.
A discharge path that communicates with the first space and discharges air in the first space,
A virus comprising an ultraviolet irradiation mechanism for irradiating at least one of air passing through the supply path and supplied to the first space and air discharged from the first space passing through the discharge path and being discharged from the first space. Removal device. The supply path includes a first backflow prevention mechanism that prevents air from flowing from the first space to the supply path.
The virus removing device according to claim 1, wherein the discharge route includes a second backflow prevention mechanism for preventing air from flowing from the discharge route to the first space. The ultraviolet irradiation mechanism is
A storage unit that stores air and
The virus removing device according to claim 1 or 2, further comprising a reflective material that is arranged on the inner surface of the reservoir and reflects ultraviolet rays. The ultraviolet irradiation mechanism is provided with a storage unit for storing air.
Any of claims 1 to 3, further comprising a pressure fluctuation flattening mechanism that communicates with the second space, which is a space in the storage portion, and flattens the fluctuation of the air pressure in the second space due to the breathing of the wearer. The virus removal device according to paragraph 1. In the supply path, the end on the side opposite to the end on the first space side is connected to the second space.
In the discharge path, the end portion opposite to the end portion on the first space side is connected to the atmospheric pressure fluctuation flattening mechanism and communicates with the second space via the atmospheric pressure fluctuation flattening mechanism. , The virus removing device according to claim 4. The virus removing device according to claim 4 or 5, wherein the air pressure fluctuation flattening mechanism blocks the flow of air and includes an air accommodating portion formed of a stretchable elastic member. The virus removing device according to claim 6, wherein the volume of the air accommodating portion is 240 to 800 mL. The virus removing device according to any one of claims 4 to 7, wherein the air pressure fluctuation flattening mechanism further includes a protective portion surrounding the air accommodating portion. The virus removing device according to any one of claims 4 to 7, further comprising a film having pores through which oxygen and carbon dioxide can flow, which is arranged at a boundary between the ultraviolet irradiation mechanism and the outside.

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