JP6782052B1 - Small blower for mask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable mask with drawbacks such that the wearer's own exhaled air tends to be trapped in the internal space between the inside of the mask and the mouth and the nasal cavity, and the inner surface of the mask is in direct contact with the mouth and the nasal cavity, so that the mask tends to become dirty. However, there was no simple small blower that blows fresh outside air into this internal space. SOLUTION: The portable small blower for a mask according to the present invention includes 1) an air pump unit that blows external air through a filter having the same virus removing performance as a disposable mask, and 2) inside the mask. An air ejection tube that is attached to the internal space between the mouth and nasal cavity and is stably attached with a flexible ear strap to guide fresh external air from the air pump unit to this internal space. Disclose a small blower for a mask, characterized by the above. [Selection diagram] Fig. 1

Description

The present invention relates to the structure of a small blower for a mask, more specifically, a fresh external filter for removing a virus in the gap between a disposable or handmade mask worn on the face and the mouth or nasal cavity. The present invention relates to a small blower for a mask that blows air.

Disposable masks and handmade masks are widely used as a countermeasure against the new coronavirus in recent years. The disadvantages of this mask are that 1) the wearer's own exhaled breath tends to be trapped in the internal space between the inside of the mask and the mouth and nasal cavity, and 2) the inner surface of the mask comes into direct contact with the mouth and nasal cavity, which tends to be dirty. It had drawbacks such as. In particular, there is a problem that this defect is noticeably seen in desk work in a commuter train such as a commuter train or a bus that is full of people in summer, or in an office for a long time.

In order to solve this problem, a second embodiment of Japanese Patent Application Laid-Open No. 2005-165242 shown in FIG. 7 discloses a configuration in which clean air from a dust prevention device attached to a cap is supplied to a disposable mask. That is, clean air is supplied from the clean air generating and supplying device attached to the sunshade cap 1 from the transparent resin hoses 31 and 32 via the hose 11 and the branch adapter 12. The transparent resin hoses 31 and 32 are attached to the strings 34 and 35 of the mask body 33 so that their ends reach the inside of the mask body 33, respectively. However, this configuration involves the following problems. The first problem is that it is unclear how the transparent resin hoses 31 and 32 are attached to the strings 34 and 35. For example, even if they are easily attached with a clip-shaped fixing bracket or fixing resin, the disposable mask is removed. In some cases, the fixing bracket or the fixing resin must be removed one by one, which has the disadvantage of being impractical. The second problem is that the filter 6 has a special shape and is not easily available everywhere, and it cannot be replaced frequently, so that it tends to be unsanitary. The third problem is that the filter used here is for preventing dust and has a performance different from the purpose of disinfecting with a so-called mask. A fourth problem is that the blower fan motor 7 is used for blowing air. That is, in order to blow air to the thin hose 11, it is necessary to relatively increase the air pressure in the device, but since such a high pressure air pressure cannot be obtained only by rotating the fan, the blowing efficiency deteriorates. Not only that, the air inside the device is warmed by the heat generated by the motor, and the warmed air directly hits the face inside the mask body 33 as hot air via the thin hose 11, which is not practical. have.

As another reference, Japanese Patent Application Laid-Open No. 2007-160027 discloses an air purifying device that can be worn like clothes in order to purify air containing substances that affect the human body. However, this device is premised on the use of a dedicated mask, and is not premised on the use of a simple and easily available disposable mask. Similarly, Disposable Masks and Suction Catheter are disclosed in Special Table 10-153095, and the description of FIG. 3 in the same reference states that "when used with a source of clean impression air, the wearer can benefit from prior art. You can get a comfortable use zone that you can't do. " However, FIG. 3 shows a configuration in which the tube is inserted into the sleeve 26, which does not exist in a general disposable mask, and has a drawback that it is not a premise to use a disposable mask that is easily available everywhere. Further, Japanese Patent Application Laid-Open No. 2015-35341 discloses an ion generator premised on the use of a disposable mask. However, this configuration is not intended to blow air, but merely to release ions for sterilization and removal of odor, and does not eliminate the exhaled breath that fills the mask. In addition to these, dust masks with intake aids are commercially available, but none of them are premised on the use of disposable masks.

Japanese Patent Application Laid-Open No. 2005-165242 JP-A-2007-160027 Special Table 10-153095 Gazette JP-A-2015-35341

At present, there is no mask other than improving the material of the mask that does not keep the wearer's own exhalation in the internal space between the inner surface of the mask and the mouth and nasal cavity when the mask is worn. The problem to be solved is that there is no small blower that blows fresh outside air to give a refreshing feeling to this internal space. Further, there is no small blower device that appropriately inflates the inner surface of the mask to the outside by the blowing pressure so that the inner surface of the mask does not come into direct contact with the mouth and the nasal cavity.

The small air blower for a mask according to the present invention is an air pump unit that blows external air that has been sterilized by a filter having virus removal performance equivalent to that of a disposable mask, and external air from this air pump unit. The most important feature is that it is composed of a cannula unit (air ejection part) connected by a flexible connecting tube for guiding. The cannula unit, unlike a medical nasal cannula that inserts a nasal prong into the nasal cavity to administer oxygen, does not have a prong and instead has multiple air ejections into an air ejection tube that contacts the upper lip or jaw. There are holes. Then, by constantly ejecting fresh filtered external air to the face from this air ejection hole, it is configured to eliminate the exhalation of the mask wearer himself / herself trapped in the mask space. The cannula unit (air ejection part) is short enough to fit inside the mask, and has ear straps on both ends, and when hung on both ears, it is in a stable state in the mask. It is installed with. Since a disposable mask is attached so as to cover the cannula unit (air ejection portion), the cannula unit (air ejection portion) cannot be seen from the outside. The connecting tube from the air pump unit is stably pressed and fixed at a predetermined position by the pressing force on the face of the mask. In another embodiment, the cannula unit (air ejection part) can be stably placed in the mask by a neck stator turned around the neck.

The filter shall be a cassette type that can be easily replaced, for example, a configuration that can be easily replaced once a day. In addition, by using the same material as the disposable mask for home use, or if necessary, the same material as the disposable mask for medical use, the sterilization performance in the space inside the mask is configured to be at least the same as that of the inexpensive disposable mask. ing. Further, the shape of the filter may be one that can be easily replaced like a dust collecting paper pack used in an existing household vacuum cleaner, or may be composed of a single sheet-shaped filter. The single sheet-shaped filter may be used as a self-made sheet-shaped filter by the mask wearer cutting a disposable mask or coffee filter with scissors.

From the cannula unit (air ejection part), the filtered external air is constantly blown to the internal space between the mask wearer's inner surface and the mouth and nasal cavity, so that one's exhaled air does not stay in the internal space. There is an advantage that a refreshing feeling can be obtained. Especially effective in hot summer. In addition, if the mask wearer himself fine-tunes the amount of external air supplied to an appropriate air pressure, the inner surface of the mask to be worn by this air pressure is appropriately separated from the mouth and nasal cavity from the inside to the outside. Since it can be inflated, it has the advantage that the inner surface of the mask reduces the contact surface that comes into direct contact with the mouth and nasal cavity, and the mask can always be used cleanly. In addition, the air purifying filter in the air pump unit has the advantage that it can be replaced at all times as a disposable filter because it can be used by cutting out an inexpensive disposable mask or coffee filter that is easily available.

FIG. 1 is a schematic view showing a usage state of a portable small blower equipped with a string-type cannula unit according to the first embodiment. FIG. 2 is a schematic view showing a usage state of the desktop type small blower. FIG. 3 is an internal mounting view of the state in which the string-type cannula unit is mounted in the disposable mask as viewed from the wearer's own side. FIG. 4 is a functional block diagram of the small blower. FIG. 5 is a schematic view showing a usage state of the portable small blower equipped with the neck type cannula unit according to the second embodiment. FIG. 6 is a schematic view showing a usage state of a portable small blower equipped with an ear-type cannula unit according to a third embodiment. FIG. 7 is a perspective view showing a second embodiment of Japanese Patent Application Laid-Open No. 2005-165242 according to the prior art related to the present invention.

FIG. 1 is a schematic view showing a usage state of a portable small blower device 1 equipped with a string-type cannula unit 30A according to the first embodiment of the present invention. The portable small blower 1 receives the air pump unit 10, the connection tube 20 connected to the blower side of the air pump unit 10 and held by pressing against the face of the mask end attached to the air pump unit 10, and further blown from the connection tube. It is composed of a string type cannula unit 30A. The power source may be a battery-powered, portable small blower, or as shown in FIG. 2, an AC power source may be used as a desktop small blower. Further, although not shown, the air pump unit 10 may be housed in, for example, a hat or a helmet.

As shown in FIG. 3, the string-type cannula unit 30A is long enough to be stored inside the disposable mask 100 (face side), and is stable between the upper lip and the nose by the ear straps 33 on both ears. It is configured so that it can be mounted laterally. In some cases, it may be worn laterally between the lower lip and the chin. In either case, the string-type cannula unit 30A is covered with the mask 100 itself on the inside (face side) of the disposable mask 100, so the appearance is such that only the ear strap 33 can be seen, and the style is of concern. A very natural fit can be obtained for women who wear it. Since the ear strap 33 is also hung on the ear so as to overlap the disposable mask string 101, the appearance is not much different from that when only the disposable mask is worn, and the structure looks natural.

The cord cannula unit 30A, unlike a typical medical nasal cannula that has a nasal prong inserted into the nasal cavity to administer oxygen, does not have a prong and instead has lateral air that contacts the upper lip or chin. The ejection tube 31 is provided with a plurality of air ejection holes 32. Then, by constantly ejecting filtered fresh external air from the air ejection hole 32 to the face, the exhaled breath of the mask wearer himself / herself trapped in the mask space is eliminated. As the material of the string-type cannula unit 30A, for example, by using a flexible and lightweight vinyl chloride resin, a material that can be bent along the surface shape of the face and can maintain the shape is used. For this reason, from the outside, the surface of the disposable mask 100 that covers the string-type cannula unit 30A does not appear unnaturally angular, and a natural wearing feeling can be obtained. In addition, the external air that has passed through the filters ejected from the plurality of air ejection holes 32 is ejected only for discharging the unpleasant exhaled air trapped in the space inside the mask, so the ejection amount is not necessarily large. I don't need it. In other words, most of the inspiration of the mask wearer is supplied through the disposable mask 100 as before, while a relatively small volume of external air for excluding one's exhaled air is ejected from the plurality of air ejection holes 32. Only. As a result, even a small air pump unit 10 can sufficiently discharge unpleasant exhaled breath, and further, by minimizing the external air that hits the face, it is possible to prevent the skin from drying unnecessarily. be able to.

FIG. 4 is a functional block diagram of the blower 1 for a mask according to the present invention. The air pump unit 10 has a configuration that is not much different from that of a general aquarium air pump that supplies air bubbles to small fish, except for the filter unit 16 and the ion generating unit 17. That is, a power supply unit 11 using a battery or a commercial AC power supply, a control unit 12, an electromagnetic drive unit 13 that generates an alternating magnetic force, a vibration unit 14 that vibrates due to the generated magnetic force, and a diaphragm that changes the volume due to the vibration of the vibration unit. The diaphragm pump unit 15 that vibrates and pushes out air is not different from the prior art.

The filter unit 16 is an intake port for external air and is arranged at a position where heat generated from the electromagnetic drive unit 13 is not taken in, and is configured to take in cool outside air. In this respect, the configuration of Japanese Patent Application Laid-Open No. 2005-165242 described above is different from the configuration in which the heat generated by the motor is unnecessarily taken in. A cassette type filter or a sheet-shaped filter is used for the filter unit 16. Since the same material as the mask material for home use or medical use is used for the filter itself, sterilized cool air is ejected into the internal space of the mask 100. In addition, it is preferable to make the surface in contact with the outside air as large as possible so that the outside air can be easily taken in. Further, a small ion generating unit 17 may be provided on the outlet side of the diaphragm pump unit 15 as needed so as to deliver comfortable ion air. In addition, although not shown, if the filter surface is directed upward, it has the advantage of being less likely to be directly exposed to the droplets and nausea of others. In addition, it is advisable to install a blast volume fine adjustment knob that allows the user to fine tune the blast volume. That is, it is suitable for inflating the inner surface of the mask to be worn away from the mouth and the nasal cavity by the blowing pressure of the external air ejected from the air ejection hole (32) to reduce the contact surface where the inner surface of the mask comes into direct contact with the face. This is because it is possible to make fine adjustments to the amount of air blown. Further, if a cooling agent storage unit for storing the cooling agent is provided near the ion generating unit 17, it is possible to send out cooler air. The amount of the ice pack may be adjusted to, for example, about one hour of commuting time. Further, if it is a desktop type small blower using a commercial AC power supply, it is possible to positively cool it with a small Peltier element and send out more comfortable air.

Further, as shown in FIG. 3, the string-type cannula unit 30A and the air pump unit 10 are connected via a connecting tube 20 that takes in clean air. As shown in FIG. 3, the string-type cannula unit 30A is provided on the side of the air ejection tube 31 having a small size that abuts on the face and is covered with the disposable mask 100, and the side of the air ejection tube that abuts on the face. It is composed of a plurality of air ejection holes 32 and a pair of ear hook strings 33 attached to both ends of the air ejection tube. With this configuration, cool and sterilized and further ionized external air is ejected from the plurality of air ejection holes 32 provided on the side of the air ejection tube in contact with the face, and the exhaled air of the mask wearer himself is positively masked. It becomes possible to discharge to the outside. This makes it possible to comfortably wear a mask even in a crowded train or in an office, and as a result, it is useful as a corona countermeasure. Further, since the air ejection tube 31 is completely covered with a mask, it has an advantage that there is no discomfort in appearance.

FIG. 5 is a schematic view showing a usage state of a small blower equipped with the neck type cannula unit 30B according to the second embodiment. The following describes only the parts different from the first embodiment. In the second embodiment, the air ejection tube 31 is attached to the neck stator 34 instead of the ear strap 33 of the first embodiment, and the wearer inserts the air ejection tube 31 from between the disposable mask 100 and the chin. After that, the neck stator 34 is wrapped around the neck and fixed in a stable position. The neck stator 34 is made of a material having appropriate flexibility, and can be freely wrapped around the neck. In this case, the air ejection tube 31 may be flat as shown and provided with a plurality of air ejection holes 32 on the side in contact with the face. Due to this shape, the disposable mask 100 that covers the disposable mask 100 does not become unnaturally angular, and the presence of the air ejection tube 31 is not recognized from the outside, and it is possible to obtain a very natural wearing feeling.

FIG. 6 is a schematic view showing a usage state of a small blower equipped with the ear-type cannula unit 30C according to the third embodiment. The ear cannula unit 30C used in this example has no prongs compared to a typical nasal cannula in which a nasal prong is inserted into the nasal cavity to administer oxygen, and instead a cannula that contacts the upper lip or chin. A part of the air ejection tube 31 near the central portion of the sill is provided with a plurality of air ejection holes 32 in this portion. Others are configured to be worn by hanging the tube over the ear, similar to a general nasal cannula.

Even after the convergence of the new coronavirus, wearing a mask is gradually becoming a new lifestyle as part of the so-called New-Normal. In this case as well, from the cannula units 30A, 30B, and 30C, fresh external air that has passed through the filter portion having the same sterilizing effect as the disposable mask is sent to the inside between the mask inner surface and the mouth and nasal cavity of the mask wearer. Since it is always supplied to the space, there is an advantage that one's exhaled air does not stay in the internal space and a refreshing feeling can be obtained, and as a result, there is an advantage that the wearing rate of the mask is improved. It is particularly effective in hot summers and in crowded cars, and can also be used as a heat stroke countermeasure tool. In addition, if the air pressure is moderate, the inner surface of the mask to be worn can be appropriately inflated away from the mouth and nasal cavity, so that the mask can always be used cleanly. Further, as the air purifying filter in the air pump unit, an inexpensive disposable mask or coffee filter that can be easily obtained can be used, so that there is an advantage that the filter can be replaced at all times as an inexpensive disposable filter. Furthermore, if an ion generation unit, a cooling agent storage unit, a cooling Peltier element, etc. are provided on the blower side, it is possible to send out cool air that has never existed before, and the internal space of the mask is kept in a comfortable state. It is possible to hold. By applying an appropriate amount of air pressure to the internal space, the internal space will be in a positive pressure state against the outside of the mask to prevent the invasion of viruses, while the swollen mask surface will protect against splashes directly from others. Can be done.

1 Blower for mask 10 Air pump unit 20 Connection tube 30A String type cannula unit (air ejection part)
31 Air ejection tube 32 Air ejection hole 33 Ear strap

Claims (7)

Disposable to actively eliminate unpleasant exhaled breath from the masked wearer's own breath-filled interior space by blowing fresh outside air into the masked wearer's interior space between the inside of the mask and the mouth and nasal passages. Or in a small blower for handmade masks;
An air pump unit (10) that blows clean external air that has passed through a filter unit (16) that has the same level of virus removal performance as a disposable mask.
The flexible air ejection tube (31) passes through the connecting tube (20) in which the clean external air sent from the air pump unit is pressed and held by the pressing force against the face of the mask end of the attached mask. It is composed of a string-type cannula unit (30A) that ejects air from the plurality of air ejection holes (32) into the internal space to eliminate unpleasant exhalation, and the string-type cannula unit is used for both ears of the mask wearer. A small air blower (1) for a disposable or handmade mask, which is stably attached to an ear hook (33) and is attached so as to be covered with a mask so that it cannot be visually recognized from the outside. The small blower (1) for a disposable or handmade mask according to claim 1, wherein the air pump unit (10) is driven by a battery or a commercial AC power source. An ion generating unit (17), a cooling agent storage unit, or a cooling Peltier element is provided on the air blowing side of the air pump unit (10) so as to eject comfortable external air into the internal space. The small blower (1) for a disposable or handmade mask according to claim 1. A claim characterized in that the air ejection tube (31) is composed of a neck-type cannula unit (30B) that is stably mounted inside the mask by a neck stator (34) instead of the ear strap (33). Item 1. Small blower for disposable or handmade masks (1). A claim characterized in that the air ejection tube (31) is composed of a tube in a part central portion of an ear-type cannula unit (30C) instead of an ear strap (33) and is stably mounted inside a mask. Item 1. Small blower for disposable or handmade mask (1). It is suitable to inflate the inner surface of the mask to be worn away from the mouth and the nasal cavity by the blowing pressure of the external air ejected from the air ejection hole (32) to reduce the contact surface where the inner surface of the mask comes into direct contact with the face. The small blower device (1) for a disposable or handmade mask according to claim 1, wherein the air pump unit (10) is provided with a blower amount fine adjustment knob for finely adjusting the air flow amount. The small blower (1) for a disposable or handmade mask according to claim 1, wherein the filter of the filter unit (16) is a commercially available disposable mask or a self-made sheet obtained by cutting out a coffee filter.