ES1295574U - Filtering mouth-nasal mask (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Filtering oral-nasal mask comprising a body to cover the nose and mouth, as well as fixing means to the user's head; the mask includes: -At least one opening in front of the mouth with its lid. -At least one filtered air flow diffuser and suction device that creates a filtered air flow screen at the opening; said device has a tubular support structure with at least one fan; The tubular support structure houses a plurality of holes and/or slots, some to expel filtered air and others to suck in filtered air: the exhaust holes and/or slots (2a) are the termination of tubular support structure ducts through which that filtered air is propelled through filters arranged in a tubular support structure; the suction holes and/or slots (2b) are the beginning of pipes in a tubular support structure that suck filtered air expelled through the holes and/or slots (2a) towards (2b); there is at least one filter before at least one fan located in a tubular support structure; the fan is powered by a battery powered by electrical connection, located in the tubular support structure. - At least one of the basic elements of the diffuser and suction device for a filtered air flow, such as a filter, a fan with its motor and propeller, and disinfection media, are on a shoulder strap that acts as a supplementary element that allows the weight of the device to be distributed. invention lightening the mask. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

FILTERING MOUTH-NASAL MASK

TECHNIQUE SECTOR

The invention, as expressed in the statement of this descriptive memory, refers to a filtering oral-nasal mask that contributes, to the function for which it is intended, advantages and novelty characteristics that will be described in detail later.

The object of the present invention lies in a mask that, being of the type intended to protect from particles contained in the air that is breathed, is distinguished by presenting an improved structural configuration that only covers the mouth or mouth/nose, configuring itself as a solution alternative, more comfortable and ergonomic, than existing conventional masks for the same purpose.

BACKGROUND OF THE INVENTION

The use of a mask to avoid infections, poisoning and as a barrier against pathogens and viruses is becoming evident in 2020/21 from the pandemic suffered; This scope includes FFP(1-2-3) masks. To achieve a good fit and seal, filtering face masks generally have a headband that extends laterally from the mask around the back of the wearer's head and neck. Filtering-face-pieces or ffp masks protect the user as they are designed to filter particles, liquid aerosols and pathogens present in the environment, preventing them from being inhaled by the user. According to the filtration efficiency, the mask is class 1,2 or 3. The filtering material is made up of a framework of plastic fibers which retains the contaminant; they have an added polarity that decreases with use and humidity.

The applicant is not aware of any solution (apart from other inventions of his own that are in the process of being processed, among which he stands out for providing a separator between nasal and mouth breathing and a reduction in the weight of the mask thanks to a better weight distribution using an external element) that can be considered similar to the invention since it has only found utility models that only include air diffusion, some of which create a flow of air from the user to the surroundings, causing a concentration of pathogenic agents around those who do not wear them, this concept/result being highly unsupportive.

This does not happen when the expulsion of air is combined with the aspiration and the protected areas are dimensioned to a minimum thanks to the use of windows and a diffuser/extractor framework that is flat or occupying a volume. Another achievement of the invention is to keep the concentration of substances and ions high in the areas that we are interested in protecting, since the aspiration avoids excessive dispersion and by sizing and timing in a balanced way, it avoids creating a dangerous flow of pathogens towards the user. .

The only files from other authors found that use the air with external fan are:

ES-2778000_A1 and ES-2797248_A1

A41D-A62B

EXPLANATION OF THE INVENTION

PPE (Individual Protection Equipment) shall be understood as any equipment intended to be carried or held by the worker or user to protect them from one or more risks that may threaten their safety or health, as well as any complement or accessory intended for such an end.

Filtering oral-nasal mask, comprising a covering body (1m ) of the nose and mouth, as well as fixing means to the user's head, includes at least one opening (window type, frame, hole with screw cap or socket) (5v) in which filtering means can be included; a screen of filtered air driven by a motor-driven propeller is created that protects the opening area and allows eating, drinking and communicating with others, preventing outside agents (pathogens and/or) toxins from being inhaled and pathogens, which we exhale, reach the outside environment. May include filtered air curtain.

The invention comprises a hollow support structure that houses a plurality of holes and/or slots responsible for circulating the filtered air for the formation of the screen and air curtain. For greater clarity on the operation of a motor with a propeller in some pipes, we are going to analyze the operation of a hair dryer: when it is turned on at first glance, there is only diffusion, but if we bring a napkin close to the air intake area, this it is stuck by a suction force. This happens because the drive medium creates a vacuum and the air after it occupies that empty space; this displacement of air reaches the air intake whose section is wider than the section of the mouth of the dryer. If the section of the air intake is decreased, the aspiration increases. Simplifying everything: to describe the filtered air flow diffuser and suction device: in a duct of the same diameter in the center of which there is a delivery propeller moved by a motor, the force with which the air is expelled is equal to that which is aspires by vacuum; filter and other interposed elements increase friction and decrease the speed of expulsion and/or aspiration. The invention can be part of a PPE or be a stand-alone element that can be attached to all PPE and masks (with or without windows) providing extra security. The invention includes at least one motor with a propulsion propeller (or means with an equivalent function) to generate an expulsion/diffusion and suction of filtered air.

The purpose of carrying out the present invention is to protect and isolate the airways of the user, protecting him and others by air pollution. Protection is by filtered airflow.

Goals:

1) Filtering: prevents harmful or toxic particles and viruses, bacteria and other pathogens from affecting the user.

2) Germicide: destroys viruses, bacteria and pathogens

3) Protection

4) Avoid the spread of viruses or bacteria

5) Allows confinement at home with relatives

6) Facilitates the use of the mask

7) Facilitates social interaction

THE MAKING OF A FILTERING MOUTH-NASAL MASK IS PART OF THE FOLLOWING ELEMENTS:

1. SUPPORT STRUCTURE: (1), are easily identified in figure (8); hollow structure where a propeller (or medium with an equivalent function) moved by a motor circulates the air that has previously passed through a filter medium. If we simplify it into a pipe, at one end there is the air intake (2t) and/or the suction holes (2b), followed by the filter (3a), propeller (3h) of impulsion moved by a motor (3m) and at the end of the tube are the holes and/or ejection slots (2a) (figure 1, 2 and 4). Mechanical and/or electronic elements such as valves, sensors, manual air flow regulators, etc. are installed in this support structure. The PPE delimits a safe zone and adapts ergonomically to the user. Part is reusable since it can be cleaned with simple soap and water or alcohol, with the exception of electronic elements, motor, etc. The filtering element can be easily renewed, removing it from the encapsulation and replacing it with a new one.

2. BODY: coincides with part or all of the support structure of the diffuser and suction device for a flow of filtered air. the body of the mask is defined by (1m); the body of the glasses is defined by (1g). It fulfills the function of obtaining a protected area and volume and works as a base for various elements of the filtering mouth-nasal mask, such as the window, joints and different devices in the coupling zone [example of coupling zone: it is the area where the filter (1f) and Hepa filter (1H) in the mask of figure 5. The body (1m) in a filtering oronasal mask creates a safe breathing chamber between the mask and the user's face and adapts ergonomically to the face. There are cases in which the supporting structure of the diffuser and suction device for a flow of filtered air is included in the body. Part or all of it is single-use or reusable, easy to clean as it is made up of materials that can be cleaned with simple soap and water or alcohol (non-porous materials such as rubber and sanitary silicones or biodegradable plastics and any material that has similar characteristics ) with the exception of the filtering element that can be easily renewed, removing it from the encapsulation or cover and replacing it with a new one. Another exception is all electronic and electrical components. The filtering oral-nasal mask, preferred embodiment of the invention, can have a mouth/nose/eye cover (figure 6).

. BREATHING CHAMBER SEPARATOR IN NASAL CHAMBER AND MOUTH CHAMBER: (figure 5) is characterized by being on the inner face of the mask, and in correspondence with the area between the nose (1n) and the mouth (1b) of the user a transversal partition (fixed or removable) (1t) of a flexible and hygienic nature is established, adaptable to the physiognomy of the user's face in the intermediate area between the nose and the mouth, determining two independent chambers, an upper chamber for the nose, and a lower chamber for the mouth. The two chambers have an air filtering medium and the separation of flows, ensures that the exhalation and inhalation of the nose does not mix with the exhalation and inhalation of the mouth.

. HOLES AND SLOTS: There are at least two separate types of holes and slots: ejection (end of ejection chute) and suction (beginning of the suction duct). The exhaust holes and/or slots (2a) receive filtered and propelled air that circulates through the exhaust ducts (2c): filtered air is expelled through (2a) towards the suction holes and/or slots (2b) and is sucked by (2b) and the suction ducts.

. DIFFUSION HOLES AND SLOTS: They are at the end of the exhaust duct and diffuse filtered air towards (partly or wholly) a different direction than the one that allows the filtered air to be drawn in through the suction holes or slots. They are important at the outer limits of the air shield to improve/ensure sealing by filtered airflow. They create different air curtains (example 1: an air curtain on top of an air screen; example 2: an air curtain alone or combined with other air curtains).

. HOLES AND/OR NON-FILTERED AIR SUCTION SLOTS: an example of their use is when they are distributed along the joint between the face and the filtering oral-nasal mask. By reducing the pressure exerted by the fastening elements on the skin, the seal decreases its sealing function and the activation of suction through the holes and/or non-filtered air suction slots prevents viruses from the environment from infecting the user or that the virus released by the user spreads to the environment (activation can be manual or programmable).

. CONDUITS. There are at least two types of independent ducts that are connected by a compartment where the propeller is: they are the expulsion ducts and the suction ducts. The ejection duct starts from the discharge propeller, branches off and ends in the ejection holes and/or slots (the type of ejection depends on the shape of the holes and/or slots and/or the attached nozzle). The suction duct starts from the holes and/or suction slots and/or the air intake. From the orifices and/or suction slots, a branch of ducts usually begins that converge in at least one main one (2d). The filter (3a) is included between the holes and/or suction slots and the propeller; the Suction type depends on the shape of the hole and/or slot and/or the attached nozzle.

. AIR INTAKE: The air intake is not considered a lockable window or opening; it is an opening with the function of allowing air to enter the diffuser and suction device of a flow of filtered air. Between the air intake and the propeller there is a filter (3a). The air intake filter can coincide with the filter of the holes and/or slots (2b), figure 3.

. FILTERED AIR SCREEN: it is identified with (4) in figure 2; the filtered air is propelled by means of a drive (motor type with a propeller) through expulsion ducts; the expulsion ducts branch, allowing the filtered air to reach some holes and/or expulsion slots (2a) in the support structure of the diffuser and suction device for a flow of filtered air; in figure 8 (2a) of a first open circuit ejects towards (2bi) of a second open circuit; the diffused air is sucked through the holes and/or suction slots (2bi), creating the air screen (4); The air sucked by (2b) circulates through the suction ducts of the support and returns to the filter, forming a closed circuit in figure 2. In this circuit, the air before and/or after being filtered can be enriched with bactericidal and antiviral substances and/or or with ions that destroy viruses, bacteria and pathogens without being harmful to the user. A filtered air screen is also formed between two or more open circuits. There are multiple possible combinations.

0. FILTERED AIR CURTAIN: in an air curtain only expulsion holes and/or slots (2a) are involved; a diffuse filtered air curtain is created through expulsion/diffusion holes that protects parts of the PPE and the user; this curtain can be on the top and sides of the filtered air screen; it can be short or long haul; it can be independent; Its objective is to increase the protected area around the areas from which the user becomes infected or intoxicated. A safe volume is created around the window and the PPE. There may be larger curtains such as diffused and/or sprayed air. The filtered air screen seeks to create an impenetrable air barrier.

. FAN: stands for propeller (3h) drive driven by a motor (3m). It is used to create the air curtain and air screen.

. FAN-BREATHING: increases the supply of filtered air to breathe it and relieve suffocation. 2 breathing fans are usually used (with one motor each or one motor with two propellers); a fan introduces filtered air into the breathing chamber between (for example) the filtering mouth-nasal mask and the wearer's face; the second ventilator has a suction function and draws exhaled air with CO2 into the breathing chamber, filters it and sends it outside.

. AIR PUMP: the RAE describes it as a device to extract, inject or compress air; Compressed air can be used to generate enough force to allow filtered air through pipe systems. It is not represented in the drawings of this specification.

. FASTENING ELEMENTS: elastic bands around the user's head (1s) in figure 8.

. FILTERS: prevent harmful or toxic particles and viruses, bacteria and other pathogens from contaminating the user. In a preferred embodiment, the filters will be replaceable and easily replaceable. In a preferred embodiment, the filters will be HEPA filters with an efficiency of 95%.

. MEANS OF DISINFECTION BY PHYSICAL AND/OR CHEMICAL METHODS: disinfection is a process whose objective is to eliminate pathogenic microorganisms from surfaces and objects. The agents that we use for this are called antiseptics, when their action is carried out on living beings, and disinfectants, when they do so on inanimate objects. That is to say, they have the same objective, but their indication is different, mainly due to the toxicity that they could cause on people. These agents can also act in two different ways: killing microorganisms or inhibiting their growth. Disinfection can be achieved by different methods that we group into two: physical methods and chemical methods. Physical methods are those that use physical variables, such as temperature and ultraviolet radiation, to achieve the disinfectant effect. Within this group we include: thermal disinfection, disinfection by ultraviolet radiation, ultrasonic disinfection. Chemical methods are those in which we apply different chemical substances for a certain time to achieve the disinfectant effect. These methods, in addition, can be used independently or associated with heat application processes, then being known as thermochemical disinfection. Depending on how we apply the disinfectant or antiseptic we have different methods: spraying, lotion, immersion. . MECHANICAL ELEMENTS; Examples that do not limit the inclusion of others: gas valve, flow regulating valve, switches, hinge, etc.

. ELECTRONIC MEANS: Important are the electronic control means with different types of sensors, means to store and process data, programmable motherboard, etc.

. ELECTRICAL MEANS: battery, motor, electrical resistance, etc. . WINDOW. The window (5v) fulfills the function of opening for different purposes, drinking, eating, connecting medical means, allowing the function of the sense organs (sight, hearing, taste), opening to ventilate, allowing a part of the user's soma access the outside; To maintain sanitary security, it is advisable to interpose a filtered air barrier. The window and the cover or window sheets can be of any shape and type such as: window with folding, sliding, cover sheet. Examples: open a practicable window to eat and drink, wound care, etc. The opening in the glasses where the lenses fit is considered a window (herein).

. COMPARTMENTS. Delimited area to include a memory element or to protect a component. There are special disinfection treatment chambers such as a spiral duct with a mirror-like internal face that includes UVC or another means to treat the air. The same propeller is in a compartment to the case.

22. SUPPLEMENTARY ELEMENT. (1S) The supplementary element is a secondary body that houses parts of the invention, facilitating its distribution and distributing volume and weight; the supplementary element already has its own function and an aesthetic that makes it recognizable: the necklace, cap, hat, button panel, belt are valid as supplementary elements. bracelet, wristband, chain, clothing, bag, shoulder bag, handbag, and others with similar function.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part of said description, where, with an illustrative and non-limiting nature, what has been represented has been Next:

Figure 1: Simplified diagram of a type of open circuit of an embodiment of the filtering mouth-nasal mask.

Figure 2: Simplified diagram of a type of closed circuit with air intake (2t) of an embodiment of the filtering oral-nasal mask.

Figure 3: Example of different air screens between exhaust holes (2a) and suction holes (2b) applicable to the invention.

Figure 4: Simplified diagram of a type of open circuit combined with a closed circuit of an embodiment of the filtering oral-nasal mask

Figure 5: Front view of a preferred embodiment of a transparent filtering mouth-nasal mask with mouth opening

Figure 6: Front view of a preferred embodiment of the filtering oral-nasal mask of Figure 5. The whole is coupled (8c) to glasses with a window (lens area) and an air screen for filtered air.

Figure 7: Front view of a preferred embodiment of the mask in Figures 5 and 6 where the battery (3b), the filter (3a), the motor (3m), the propellers (3h) are in a supplementary element that it is a medal hanging from the neck by a fastening element (3c).

Figure 8: Side perspective view of an example of an embodiment of a filtering mouth-nasal mask with a screen and an air curtain.

Figure 9: shows a perspective view of the filtering mouth-nasal mask of figure 8 with an open window.

Figure 10: example of realization of glasses with screen and filtered air air curtain

Figure 11: shows an example of making spectacle lenses with a filtered air screen.

PREFERRED EMBODIMENT OF THE INVENTION

An embodiment of the invention is briefly described below, as an illustrative and non-limiting example thereof. Throughout the description and claims the word "comprises" and its variants are not intended to exclude other technical characteristics, additives, components or steps. For those skilled in the art, other objects, advantages, and features of the invention will emerge in part from the description and in part from the practice of the invention. The following examples and drawings are provided by way of illustration, and are not intended to limit the present invention. Furthermore, the present invention covers all possible combinations of particular and preferred embodiments indicated herein. In view of the figures and in accordance with the numbering adopted therein, some non-limiting embodiments of the invention can be seen with a diffuser and suction device for a flow of filtered air. Said device is characterized by having one or more motors of one or more propellers and any combination (including only open circuit or only closed circuit of which there are examples in figures 1,2,3 and 4) between the open and closed circuits, (or part of them) of filtered air and any distribution of holes and/or intake, exhaust and discharge slots air intake [the latter characterized by a single or several and smaller]. The circuits, ducts and their elements form a structure with the PPE or are a removable device that is installed in a PPE. The filtered air flow (expulsion and suction) function is adjustable and/or with all possible combinations (even extremes, examples: zero exhaust/maximum suction, maximum exhaust/zero suction, exhaust = suction). The function of the holes and/or slots is fixed or interchangeable thanks to valves. The holes and/or suction slots (2b) and the holes and/or exhaust slots (2a) and air intake are in any part of the support structure [in the body of the filtering oral-nasal mask (1m) and attached supplementary element (1S)].

Figures 1, 2 and 3 represent circuit diagrams of the invention that do not limit the combination of the elements that constitute them or the incorporation of other mechanical and/or electronic means. The most important filter is the one arranged between the air intake (and/or intake holes/slots) and the propeller; there may be other filters arranged to prevent dirt and contamination.

There is the possibility of other mechanical and electronic means arranged in the circuit such as valves, sensors, etc.

When there are two filtered air circuits, there may be a single motor that moves the two circuits by a mechanism with two propellers or two or more motors, at least one for each circuit. The function of the propulsion motor with propeller can be replaced by a mechanical device such as a manual pneumatic ball (manual pneumatic ball acts as a motor/propeller).

Open circuit: (figure 1) from the air intake (2t) [and/or intake holes (2b) shown in figure 2], intake ducts (the intake duct is not represented in this figure due to its proximity between air intake, filter and propeller compartment), filters (3a), propeller (3h) driven by motor (3m) (or equivalent means of air impulsion), expulsion ducts (2c) and ejection holes (2a). The holes and/or slots for aspiration (2b), expulsion (2a) and air intake are in any part of the body [filtering mouth-nasal mask body (1m), supplementary element body (1S)] that is needed.

Closed circuit: it is sucked (figure 2) from suction holes (2b) and/or air intake (2t) with its manual or electronic/automatic flow valve (1v), suction ducts (2d), filters (3a) ; the propeller (3h) driven by a motor (3m) (or equivalent means of propelling air), drives the filtered air through exhaust pipes (2c) to exhaust holes (2a); (2a) directs the filtered air towards (2b). Filtered air screen (4) is created. The closed circuit by itself forms a diffuser and suction device for a flow of filtered air with an air screen; It can include a branch of (2c) up to holes and/or diffusion slots to create filtered air curtain (in this case it would be a combined circuit, partly closed and partly open). The holes and/or slots for aspiration (2b), expulsion (2a) and air intake are in any part of the body [filtering oral-nasal mask body (1m), supplementary element body (1S)] that is needed.

Figure 3: Example of a different air screen between exhaust holes (2a) and suction holes (2b) applicable to the invention.

Figure 4 represents two circuits, one open and the other closed; It is observed that the open circuit together with the closed circuit forms the filtered air screen (4).

The preferred embodiment consists of a filtering oral-nasal mask represented by figures 5, 6 and 7. It seeks to be light, aesthetic and with different options for different needs. It is transparent to facilitate communication and social interaction. It can be used with or without an air screen. This filtering oral-nasal mask is characterized by the fact that on the inner face of the mask, and in correspondence with the area between the nose (1n) and the mouth (1b) of the user, a transverse partition (fixed or removable) is established ( 1t) of a flexible and hygienic nature (example: medical silicone), adaptable to the physiognomy of the user's face in the intermediate area between the nose and the mouth, determining two independent chambers, an upper chamber for the nose, and a lower chamber for the mouth. Both chambers have air filter media; There is at least one filtered air flow diffuser and suction device comprising an independent support structure or in the body of the invention (1m) and/or in the body of the supplementary element (1S). In Figure 7, most of the elements of the diffuser and suction device for a flow of filtered air are in an additional body in the shape of a medal (1S) that hangs from a chain (3c) to hang it from the neck.

The opening of the filtering oral-nasal mask has a frame (5v) to which a removable lid (with magnets) is attached, which, when removed, is left attached by the magnets to the medal where there is UVC that keeps it disinfected. The mask can be used with the cap on without connecting the tubes (3t) that feed it with filtered air and suck the expelled air. In the models where the medal houses only the battery, the tube (3t) serves for the electrical connection of the rest of the device (3m) that can be in the body (1m) of the same filtering mouth-nasal mask as in figure 8 and 9. The air ducts (2c) and (2d) of the mask in Figure 6 are connected to the ducts (2c) and (2d) of the goggles by means of the connections (8c); As an example, in (8c) the right connects (2c) and in (8c) the left connects (2d). The lateral filter (1f) is used for nasal breathing. The front filter on the chin (1H) is Hepa and is used for mouth breathing. By having the transversal partition, the user can eat while breathing safely through the nasal side filter (1f) and be protected by the filtered air screen. Safety can be increased by increasing the section of the filtered air screen by fitting a tube around the opening frame of the filtering mouth-nasal mask, which tube has the corresponding holes or slots (2a) and (2b).

Figure 5 shows: mouth (1b), nose (1n), partition (1t), magnets (1i), side filter (1f), Hepa filter (1H), frame type opening (5v) for lid, connections ( 1c) with the tubes (3t), expulsion holes or slots (2a), suction holes or slots (2b).

Figure 6 shows: glasses attached to the glasses body (1g), air screen (4) in the opening, expulsion holes or slots (2a), suction holes or slots (2b), side filter (1f) . The ducts (2c) and (2d) of the mask connect with the ducts (2c) and (2d) of the goggles thanks to the connections (8c). (2c) and (2d) are not seen; they are in the body of the mask; as an example in (1c) right is connected (2c) and in (1c) left is connected (2d).

Figure 7 shows: medal (1S), connections (1c) with the tubes (3t), chain to hang from the neck (3c), filter (3a), battery (3b), motor (3m), propeller (3h ) drive. In this case, most of the elements (motor, battery, propeller, filter) of the diffuser and suction device for a flow of filtered air are in an additional body in the shape of a medal (1S) that hangs from a chain (3c) to hang it by the neck

Figure 8 shows: fastening element of the filtering mouth-nasal mask (1s), filter (3a), motor (3m), impulsion propeller (3h), holes or ejection slots (2a), air intake (2t), sliding window pane (5h), sliding window pane filter (5f), disinfectant compartment where the sliding window panes are housed (5c). Part of the support structure (1) of the filtered air flow diffuser and suction device; the rest is included in the body (1m) of the mask. The "i" in (2ai), (2bi), (3ai), (3mi), (3hi) only represents elements of a second circuit, the number and first letter valid for the claims. A plurality of holes and/or slots are housed, some of which are responsible for expelling (2a) filtered air towards (2bi), others for sucking (2bi) the air expelled by (2a) already filtered by the filter (3a) arranged on the support (1 ); there is a filter (3a) for air intake (2t); Another filter (3ai) is between the intake duct before the air impeller (3hi) driven by motor (3mi).

The motor with drive propeller is powered by a battery powered by electrical connection, type micro-USB or equivalent, located in the support structure (1) or in (1m). The filtering oral-nasal mask is attached to the face, remaining completely adhered to the skin and stabilized by the pressure exerted by one or several elastic cords (1s) that surround the head and/or the ears, obtaining an optimal seal (perfect if possible).

Figure 9 shows: filtered air flow (4) in a mask with an open window. The holes (2ai) create a filtered air curtain.

Figure 10 shows: example of realization of glasses with screen and filtered air curtain that has a body (1g), filter (3a), motor (3m), impeller (3h), discharge holes or slots ( 2a), suction holes or slots (2b), air screen in the opening (4). An embodiment of glasses that include the filtered air screen (4) described in figure 2 is shown. I point out that the frames where lenses are included are considered in this specification as "windows"; in addition, an air screen can be formed on any perimeter or between sides in which there are holes and/or exhaust slots and holes and/or intake slots.This model includes a closed filtered air circuit including an air intake (2t).In this closed circuit the air , after being filtered, can be enriched with bactericidal and antiviral substances (essential oils) or with ions that destroy viruses, bacteria and pathogens (UV led) without being harmful to the user.There is an air screen in the frame of the lenses (corresponding to a window): it is filtered air from (2a) to (2b); in front of the air screen of the lens frame there is another screen of filtered air from (2a) on the body of the glasses to (2b ) in the body of the glasses; there is a curtain of diffused air through holes and/or slots (2ad) which in this case receive the filtered air from the same main duct (2c) that it feeds (2a). The inclusion of (2ad) in the drawing has been simplified, but they can be distributed throughout the body of the glasses. It can be used with or without glasses. If there are lenses, there is an air screen in front of and behind the lenses that has an anti-fog effect. This embodiment may be materialized in a monobloc body (one piece), or, with the temples and the joining piece manufactured separately and joined by "clipped" tongue and groove.

Figure 11 shows: lenses [at least two lenses (8a, 8b) facing each other or a single thick one for (2a) and (2b)] have a slot that acts as an opening and with screen/curtain (4), with filtered air between (2a) and (2b): they are a safe solution for those who do not wear glasses or wear contact lenses.

Another option is normal lenses and having a front and rear airflow to prevent fogging. They can be two lenses (8a, 8b) without graduation with a slot in relation to the field of vision. Between the lenses there is a flow of filtered air that covers the slots thanks to the diffusion function alone or to the two combined expulsion and suction functions. This airflow is produced by the air circuit of the goggles that at least have a filter, a motor with a battery, and a propeller. In other models, the flow of filtered air depends on the elements of the filtering mouth-nasal mask or other PPE. The lens can be single with slots, ducts and holes.

OTHER REALIZATIONS:

The filters are in (1m) and/or (1S). There is an embodiment with a fan located in the body of the invention (1m) and/or secondary body of the supplementary element (1S). There is an embodiment that includes an openable window that has filtering means (5f). There is an embodiment where the nose and mouth covering body additionally includes filter means. There is a realization where the body of the filtering oral-nasal mask additionally covers the eye area, through a transparent screen or glasses, being able to incorporate additional filters. There is a realization that contains mechanical, electrical, electronic and computer elements. There is a realization that is prepared for rain (waterproof material, drop-down awning).

Claims (4)

1- Filtering mouth-nasal mask comprising a body to cover the nose and mouth, as well as fixing means to the user's head; the mask includes: -At least one opening in front of the mouth with its lid. -At least one filtered air flow diffuser and suction device that creates a filtered air flow screen at the opening; said device has a tubular support structure with at least one fan; The tubular support structure houses a plurality of holes and/or slots, some to expel filtered air and others to suck in filtered air: the exhaust holes and/or slots (2a) are the termination of tubular support structure ducts through which that filtered air is propelled through filters arranged in a tubular support structure; the suction holes and/or slots (2b) are the beginning of pipes in a tubular support structure that suck filtered air expelled through the holes and/or slots (2a) towards (2b); there is at least one filter before at least one fan located in a tubular support structure; the fan is powered by a battery powered by electrical connection, located in the tubular support structure. - At least one of the basic elements of the diffuser and suction device for a filtered air flow, such as a filter, a fan with its motor and propeller, and disinfection media, are on a shoulder strap that acts as a supplementary element that allows the weight of the device to be distributed. invention lightening the mask. 2. Mask according to claim 1, characterized by including a respirator fan: a fan introduces filtered air into the breathing chamber between the mask and the user's face; another fan has a suction function and draws exhaled air with CO2 into the breathing chamber, filters it and sends it outside; the fan has a motor, drive propeller, filter and battery. 3. - Mask according to claim 1 characterized by including air filtering means and the filters are replaceable. 4. - Mask according to claim 3 characterized by using HEPA filters.