CN221673242U - Hood air purifying respirator - Google Patents

Abstract

A hood air filter respirator, which is composed of a hat, a transparent mask, a host and an air duct. The hood is composed of a transparent lens, also called a transparent mask and a hat. Helmet-type hats such as full helmets, flip-up helmets, half helmets and 3/4 helmets, as well as flip-up Lei Feng hats, are all transparent masks connected to helmets or Lei Feng hats in a flip-up manner. There is also a transparent mask and hat that can be easily connected or removed, and the hat is a hat connected to our top or a hat that is often used in life. The transparent mask and hat are connected together naturally, conveniently, more naturally and simply; and the hat and transparent mask can be opened in a flip-up manner or easily removed or installed, which is convenient and quick to use in life, and will not cause the user to suffocate due to a host failure. Wearing a hood air filter respirator can breathe filtered air, is comfortable to wear, and can also block wind and sand to prevent it from blowing into the eyes.

Description

Hood air purifying respirator

Technical Field

The invention relates to an air filter purifier for people to breathe, in particular to a head cover air filter purifier which is worn on a hat or a head decoration, and the hat and a transparent mask are connected to form a head cover.

Background Art

Masks are self-protection tools that people wear on their faces to provide filtered fresh air due to changes in the surrounding environment. Masks are divided into mechanical suction masks and electric active air supply masks in terms of function. Electric active air supply masks refer to masks that use electric fans to supply air. For example: a separate electric air supply mask, which is composed of an air filter (also called a host), an air duct and a mask. The host is composed of an air filter element or an air filter, an electric fan and a machine casing. The power supply on some hosts is set inside the host, and the power supply on some hosts is separated from the host, and a wire is connected between the power supply and the host. When in use, the electric fan is powered on, and the electric fan starts to pump air. The external air is sucked into the host, and after being filtered through the air filter, fresh air is continuously sent into the mask through the air duct. People wearing masks can breathe fresh air. The separate electric mask has a good air filtering effect and smooth breathing, but there is a disadvantage: first, the mask is obvious and troublesome to wear and use. When using it, there is a convex air duct on the face, and it is inconvenient to move and does not conform to people's living habits. People are psychologically unacceptable and have resistance, and feel that only people with unhealthy bodies use assisted breathing. And it reminds me of an oxygen tube. Second, one end of the airway tube is suspended on the mask on the face and in front of the face. The head keeps twisting, and the airway tube swings with the neck as the center. The airway tube pulls the mask with great force, which makes it uncomfortable and unnatural to wear. Third, the airway tube between the mask and the host is long, and the host connected to the other end of the airway tube is set on the arm. The head swings with a large amplitude, and the airway tube pulls the mask with great force, resulting in a poor wearing experience, which restricts people's work and life behavior habits. When wearing a mask and it is windy outdoors, sand and dust will blow into your eyes.

The mask respirator is composed of a transparent mask, an air filter and a headband. The transparent mask covers the face including the eyes, nose, mouth and cheeks. The edge of the transparent mask is provided with silicone strips or cotton strips that fit and press on the face to protect the transparent mask and the face to form a closed space. The headband on the transparent mask is tightened on the head. However, the users of the transparent mask include adults, children, men and women, and the faces are of different sizes. When the transparent mask is in use, the connection between the transparent mask and the face is prone to air leakage, which affects the air filtering effect. Moreover, when the transparent mask is worn on the face, the silicone strips on the edge of the transparent mask feel very rough, very industrial, very prominent, and unnatural to use. It is not a user-friendly product. Moreover, the transparent mask is pressed and worn on the face, which is uncomfortable to use.

There is also a 3M dust-powered electric air supply dust filter device, which consists of a hood, an air filter host and an air duct. A transparent lens is set at the facial position of the hood. The transparent lens is connected to the hood and cannot be removed. There is a pipe opening on the hood, and a neck cloth is connected to the bottom of the hood. The air filter host is hung at the waist, and an air duct is connected between the air filter host and the pipe opening on the hood. This product has a good effect, but the transparent mask on the hood is integrated with the hood and cannot be removed. When the air filter host fails, if the hood is not easy to unfasten, the user is in danger of suffocation. This product is a professional equipment and cannot be freely and easily matched with clothes worn in life. The product is not delicate, the position of the air filter host is unreasonable, and it is inconvenient to move. The industrial style is deep, and people in life cannot use it easily and naturally in life.

There are many types of helmets, including half helmets, 3/4 helmets, full helmets, and flip-up helmets, which are used in different environments. In order to protect the head during use, the helmet is equipped with a mask and a neck strap is connected to the bottom of the helmet. The mask and neck strap on the helmet can block the face from the wind, but the mask is separated from the neck strap on the half helmet or 3/4 helmet, so the wind blocking is not ideal. In addition, when the helmet is in use, in order to wear a mask to breathe fresh air, the user has to wear a helmet and then a mask, which is very troublesome and has a poor user experience. When the helmet is in use, the gas exhaled by the human body on the transparent mask of the helmet is easy to fog up and affect the user's vision.

Utility Model Content

In order to overcome the disadvantages of the inconvenient placement of the host on the existing detachable electric mask, the disadvantage that the user wears a helmet and then wears a mask, the disadvantage that the mask respirator is not ideal to wear, and the disadvantage that the air filter host of the 3M dust-powered electric air supply dust filter device is inconvenient to hang around the waist, the professional equipment industrial product is not light, the transparent mask cannot be removed from the mask connection, there is a risk of suffocation during use, and ordinary people cannot use it. There are also disadvantages that it is inconvenient to wear a mask while wearing a helmet, and the transparent mask on the helmet is easy to fog up and block the user's sight when breathing while wearing a helmet.

The present invention provides a mask-type air-filtering respirator, which is composed of a main unit, a hood and an air duct. The hood is composed of a transparent lens, also called a transparent mask, and a hat. Helmet-type hats such as full-face helmets, flip-up helmets, half helmets and 3/4 helmets, as well as flip-up Lei Feng hats, are all transparent masks connected to helmets or Lei Feng hats in a flip-up manner. There is also a transparent mask and hat that can be easily connected or removed, and the hat is a hat connected to our tops or a hat that is often used in life. The transparent mask and hat are connected together very naturally and conveniently, and will not be very prominent. Wearing and using them will not feel very different or weird, and they are easily accepted by people.

The host is arranged on the helmet, and the transparent mask, the helmet and the neck strap under the helmet are combined into a closed space. One end of the air duct is arranged on the inner side of the transparent mask on the helmet, and the other end of the air duct is connected to the air outlet on the host. When wearing the helmet, the host arranged on the helmet is turned on, and the user can breathe fresh air. When exhaling, the full-face helmet or flip-up helmet can open a slit on the transparent mask for ventilation, or the mesh vents designed at the chin for ventilation, or the air inlet holes set at the chin for exhaust, and the host circulates and continuously transports the external air into the transparent. When the half helmet or 3/4 helmet is ventilated, the lower neck strap and the transparent mask are zippered and there are two zipper pullers at the connection between the lower end of the transparent mask and the neck strap, and there are slits between the two pullers for ventilation and exhaust. A one-way air valve is arranged on the transparent mask of the half helmet or 3/4 helmet for easy exhalation.

The hat connected with the transparent mask set is a hat that we usually use in our daily life. For example: the hat on the sweater, the hat connected to the cotton coat, and the Lei Feng hat or the head cover hat. The transparent mask and the hat can be easily separated or installed, which is convenient for connecting with the hat of our top or connecting with a separate hat in life.

The main unit is arranged on the cap, and the other end of an air guide tube connected to the main unit is arranged on the inner surface of the transparent mask. It is a common arrangement to arrange a one-way exhaust valve on the transparent mask, and a one-way exhaust valve is also often arranged on a mask, which has the advantage that the mask does not feel stuffy during use. Therefore, the transparent mask on the hood-type air filtration respirator is also provided with a one-way exhaust valve.

The technical solution adopted by the present invention to solve the technical problem is: the mask is worn on the face, covering the mouth, nose, eyes and cheeks. The edge of the mask is provided with an annular silicone strip or cotton strip, and the mask is worn on the face, and the silicone strip or cotton strip on the edge of the mask is closely connected with the face, forming a closed space between the mask and the face. A one-way exhaust valve is provided on the lower surface of the mask.

A half helmet or a 3/4 helmet is worn on the head, and the transparent mask on the half helmet or the 3/4 helmet is pulled down to cover the face. The transparent mask is separated from the face, and the bottom of the transparent mask is not connected to the face, so air will circulate under the face. In life, there is also a kind of hat with face protection, called a mask hat. A transparent mask is connected to the hat, and the upper side of the transparent mask is connected to the hat. When the hat is worn, the transparent mask is separated from the face. It is mainly used to protect the face, and some have the function of UV protection. A transparent mask is set on the half helmet or the 3/4 helmet or the mask hat, and the main unit is set on the half helmet or the 3/4 helmet or the hat. The exhaust pipe port on the main unit is connected to an air duct, and the other end of the air duct is set on the inner side of the mask.

The user wears a half helmet or a 3/4 helmet or a mask hat provided with a host, and an open air circulation space is formed between the mask on the half helmet or the 3/4 helmet or the mask hat and the face. The host provided on the half helmet or the 3/4 helmet or the mask hat is turned on, and the electric fan rotates. The host sucks the external air into the host, filters it, and then transmits it to the transparent mask on the half helmet or the 3/4 helmet or the mask hat through the air duct. The user wearing the half helmet or the 3/4 helmet or the mask hat can get fresh air, but the external air will also enter the transparent mask from the bottom of the transparent mask. Therefore, a silicone strip or a cotton strip is respectively provided on the U-shaped edge of the transparent mask on the half helmet or the 3/4 helmet or the mask hat. When the user wears the half helmet or the 3/4 helmet or the mask hat, the silicone strip or the cotton strip respectively provided on the U-shaped edge of the lower part of the transparent mask on the half helmet or the 3/4 helmet or the mask hat fits and connects with the wearer's lower jaw, so that a closed space is formed between the transparent mask and the face. Turn on the host on the half helmet or 3/4 helmet or mask hat, the electric fan rotates, the host sucks the external air into the host, filters it, and then transmits it from the air duct to the transparent mask on the half helmet or 3/4 helmet or mask hat, so that the user wearing the half helmet or 3/4 helmet or mask hat can breathe fresh air. At the same time, the host continuously circulates the external air into the transparent mask, and the user also exhales the gas into the transparent mask. The air pressure in the transparent mask is greater than that outside, and the gas in the transparent mask will be discharged from the silicone strip or cotton strip on the transparent mask where the transparent mask connects to the face. First, the size of each person's face is different, and the edge of the transparent mask is not tightly sealed to the user's face. Second, in the space formed between the transparent mask and the face, since the air pressure inside the transparent mask is greater than the external air pressure and the silicone strip or cotton strip on the edge of the transparent mask is soft and transparent, and the upper part or upper edge of the transparent mask is connected to the half helmet or 3/4 helmet or mask cap, the U-shaped edge of the transparent mask is fitted to the face, and the transparent mask is not provided with a headband or ear strap to tighten the transparent mask and fix it on the face, the gas inside the transparent mask will be discharged from the silicone strip or cotton strip on the edge of the transparent mask. Third, the user wearing the half helmet or 3/4 helmet or mask cap can gently adjust the angle or position of the half helmet or 3/4 helmet or mask cap and the head, so that there is a gap between the edge of the transparent mask and the face for air circulation, and the positive pressure gas in the transparent mask will also be discharged from the connection between the transparent mask and the face. Even if the transparent mask is not provided with a one-way exhaust valve, the gas in the transparent mask can also be discharged from the connection between the transparent mask and the face. The masks people wear have filtration percentages of 50%, 80%, 90%, etc. Moreover, the sealing of masks (that is, the edge of the mask is tightly pressed against the face so that air does not enter from the connection between the edge of the mask and the face) is rarely 100%, so when the transparent mask on a half helmet, 3/4 helmet or mask cap fits the face, it is normal for the gas in the transparent mask to be discharged from the connection between the transparent mask and the face. Users wearing half helmets, 3/4 helmets or mask caps with air filters have a better experience than masks.

A zipper consists of chain teeth, a slider, upper and lower stops (front stop and back stop) or a locking piece. Generally, a zipper has two chain straps, each with a row of chain teeth, and the two rows of chain teeth are arranged alternately. The slider clamps the chain teeth on both sides, and slides with the help of the pull tab to make the chain teeth on both sides engage or disengage with each other. The back stop of a closed zipper is fixed, while the opposite is true for an open zipper. For a double-open zipper, the two sliders can be opened or closed from either end. Pull both sliders close to the locking piece to separate them. Zippers are connectors that facilitate people's lives. Zippers on clothes, zippers on backpacks, and the long scarf connected to the bottom of helmets are also zipper-style designs, which are easy to use. Some zippers are plastic convex and concave headline smooth zippers.

A hooded top is a top with a hood connected to the top. For example, a sweatshirt is a hooded top, and the hood is integrated with the top, and the hood cannot be removed. There are open-chested shirts, short shirts, sleeveless shirts, etc. For example, a hooded jacket, the hood on the jacket is connected to the jacket by zipper. For example, a hooded cotton-padded jacket, some hoods are integrated with the cotton-padded jacket, and the hood cannot be removed; some hoods are connected to the cotton-padded jacket by zipper, and the hood can be removed from the cotton-padded jacket. The hood on a hooded top can be put on the head, and the bottom of the hood is wrapped around the neck, leaving only the face exposed, to block wind, sun, etc. The edge of the hood of a hooded top that is exposed to the face has a tightening belt, which is tightened at the chin to make the edge of the hood fit the face and protect the head. Some hooded tops are designed with tightening straps at the collar and the neck under the hood. The tightening strap installed at the neck is connected by tightening the two ends of the tightening strap at the chin to make the collar of the top fit around the neck and shins to block air circulation.

There are many kinds of hats. Helmets are hard hats that are put on the head to protect the head. There are also soft hats. In life, there is also a kind of hat with face protection, called a mask hat. A transparent mask is connected to the hat, and the upper side of the transparent mask is connected to the hat. The upper ends of the transparent mask are hinged to the two ends of the front brim. When wearing a hat, the transparent mask is separated from the face, mainly used to protect the face, and some have the function of UV protection. The hat body is only worn on the head, and the ears and hind legs are exposed. There are also Lei Feng hats worn in winter, some Lei Feng hats are equipped with transparent lenses. Transparent lenses are also called masks, which block the wind from blowing directly on the face. The Lei Feng hat is divided into two parts, the upper part is put on the head, the middle part of the lower part covers the back of the head and the hind legs, and the two long strips on both sides of the lower part cover the ears and cheeks respectively. Velcro is set on the two strips to connect and fix the two ends at the chin. The front ends of the Lei Feng hat are hinged to the two corners on the upper side of a mask. The mask blocks the wind and protects the eyes. The mask can be opened by flipping up and can be pulled down to cover the face. These are existing products on the market, but the effect of using the mask with a hat is not ideal, and the wind will still blow on the face.

There is also a kind of hat called a headgear, which is a combination of a hat and a neck gaiter. It is worn on the head, with the face exposed and the neck protected. It protects against wind, sand, sun, etc. The headgear can be single-layer or multi-layer, and the materials include fabric or airtight silicone, depending on the use environment.

A helmet is a kind of hat, which is worn on the head to protect the head. Helmets are classified into military helmets, work helmets, sports helmets, etc. The most common ones are helmets for riding electric bikes or motorcycles. The structure of the helmet is composed of an outer shell, a lining (the lining has cushioning foam and mesh breathable cotton), and a suspension device. Generally, a face shield is installed on the helmet, which is a transparent lens, also called a transparent mask or mask. Helmets are structurally divided into half helmets, 3/4 helmets, full helmets, and flip-up helmets. Flip-up helmets are also a kind of full helmet. Full helmets protect the entire head, all the way to the chin, but the ventilation is poor and it is not stuffy. The full helmet consists of an outer shell, an internal cushioning foam layer and mesh breathable cotton, and a buckle-type tightening strap. The chin of the full helmet is provided with an air inlet near the mouth to prevent breathing suffocation. The face of the full helmet is provided with a transparent mask, which can be lifted up and pulled down, and an air inlet is provided at the front of the upper part of the full helmet, and an air outlet is provided at the back of the full helmet. When in use, the wind blows towards the helmet, and the cool air enters from the air inlet of the helmet and is discharged from the air outlet at the back of the helmet, so that the hot air in the helmet can achieve the best exhaust effect. A mesh vent is set at the chin of the full-face helmet to keep the air flowing inside the helmet. A warm and long neckband is set on the top of the full-face helmet to close the neck, block the wind and keep warm. The zipper neckband is easy to remove. The flip-up helmet is a flip-up helmet. The difference from the full-face helmet is that the front part of the helmet is connected to the helmet shovel chain, which can be easily flipped up and pulled down to close. It is convenient for smoking or drinking water. The flip-up helmet is also equipped with a transparent mask, and there is also a zipper neckband at the bottom to block the wind and keep warm. The flip-up helmet is equipped with an air inlet at the front of the upper part, and an air outlet at the back of the full-face helmet. A mesh vent is set at the chin of the full-face helmet to keep the air flowing inside the helmet. After flipping up, it becomes a 3/4 helmet. The difference between the 3/4 helmet and the full-face helmet is that the chin is not wrapped, and the mouth is exposed. The cheeks and the back of the head are all wrapped. A transparent mask is set in front of the 3/4 helmet to cover the face. The transparent mask can be lifted up or pulled down to close, and the two ends of the transparent mask are hinged to the two ends of the helmet's forehead. A long scarf is set at the bottom of the 3/4 helmet. The long scarf is set at the bottom of the helmet. Some of them are connected by zippers or sewed. The long scarf is wrapped around the neck, and the two ends are connected at the chin with Velcro. The difference between the half helmet and the 3/4 helmet is that not only the chin and mouth are exposed, but also the cheeks and the back of the head are exposed, and the protective effect is poor. A transparent mask is also set in front of the half helmet to cover the face. The transparent mask can be lifted up or pulled down to close, and the two ends of the transparent mask are hinged to the two ends of the helmet's forehead. The cushioning material in the shell of the half helmet is either foam or mesh plastic strips. A sheet-like scarf is also connected to the bottom of the half helmet to protect the back of the head, ears, cheeks, and neck. The sheet-like scarf is connected to the bottom of the half helmet by zippers or fine thread sews. The sheet-like scarf covers the back of the head, ears, cheeks and neck, and the two ends are connected at the chin with a set Velcro. Half helmets are generally used in hot summer environments.

Solution 1: The full-face helmet is connected to the host. There are multiple small holes on the shell of the host, and one end of multiple small suction cups is respectively buckled on the small holes above. Multiple small suction cups on the shell of the host are sucked on the shell of the full-face helmet. Or Velcro is attached to the shell of the host, and Velcro is also attached to the shell of the full-face helmet or the extended neck under the full-face helmet, and the Velcro on the shell of the host is attached to the shell of the full-face helmet or the extended neck on the full-face helmet. The air outlet of the host is connected to an air duct, and the other end of the air duct is connected to the air inlet set on the transparent mask of the full-face helmet. Or an air duct inlet is provided on the shell of the full-face helmet, and a groove is provided on the buffer foam layer between the shell of the full-face helmet and the buffer foam layer between the air duct inlet and the front edge of the full-face helmet. A section of the air duct on the host passes through a groove provided on the buffer foam layer and is arranged therein, and the front port of the air duct is arranged at the upper edge of the transparent mask. A one-way exhaust valve is provided on the transparent mask of the full-face helmet.

The user wears a full-face helmet, and the lower part of the full-face helmet is connected with an extended neckband that can be wrapped around the neck to block the wind. Pull down the transparent mask and close it to form a relatively closed space between the transparent mask and the face. Turn on the host, and the electric fan draws the external air into the host, which is filtered through the air filter and then enters the space formed between the transparent mask on the full-face helmet and the face through the air duct, so that the user can breathe fresh air. The air outlet of the air duct blows downward from the transparent mask, and the transparent mask will not fog up, which will not affect the user's vision. The user exhales, and the gas is discharged from the one-way exhaust valve on the transparent mask, or from the mesh breathable cloth at the chin of the full-face helmet, or from the gap between the transparent mask and the full-face helmet, or from the air vent at the chin of the full-face helmet. The host continuously transports the external air into the transparent mask, and there is positive air pressure between the transparent mask and the face, so it is not easy for the external air to enter.

Solution 2: The flip-up helmet is connected to the host. There are multiple small holes on the shell of the host, and one end of multiple small suction cups is respectively buckled on the small holes above. Multiple small suction cups on the shell of the host are sucked on the shell of the flip-up helmet. Or Velcro is attached to the shell of the host, and Velcro is also attached to the shell of the flip-up helmet or the extended neck under the flip-up helmet, and the Velcro on the shell of the host is attached to the shell of the flip-up helmet or the extended neck under the flip-up helmet. The air outlet of the host is connected to an air duct, and the other end of the air duct is connected to the air inlet provided on the transparent mask of the flip-up helmet. Or an air duct inlet is provided on the shell of the flip-up helmet, and a groove is provided on the buffer foam layer between the shell of the flip-up helmet and the buffer foam layer between the air duct inlet and the front edge of the flip-up helmet. A section of the air duct on the host passes through a groove provided on the buffer foam layer and is arranged therein, and the front end of the air duct is arranged at the upper edge of the transparent mask. A one-way exhaust valve is provided on the transparent face mask of the flip-up helmet.

The user wears a flip-up helmet, and the bottom of the flip-up helmet is connected with an extended neckband that can be wrapped around the neck to block the wind. Pull the transparent mask down and close it to form a relatively closed space between the transparent mask and the face. Turn on the host, and the electric fan draws the external air into the host, passes through the air filter, and then enters the space formed between the transparent mask and the face in the flip-up helmet from the air duct, so that the user can breathe fresh air. The air outlet of the air duct blows downward from the transparent mask, and the transparent mask will not fog up, which will not affect the user's vision. The user exhales, and the gas is discharged from the one-way exhaust valve on the transparent mask, or from the mesh breathable cloth at the chin of the flip-up helmet, or from the gap between the transparent mask and the flip-up helmet, or from the ventilation hole at the chin of the flip-up helmet. The host continuously transports the external air into the transparent mask, and there is positive air pressure between the transparent mask and the face, so that the external air is not easy to enter.

Solution 3: The 3/4 helmet is connected to the host. A transparent mask is set in front of the 3/4 helmet to cover the face. The transparent mask can be lifted up or pulled down to close, and the two ends of the upper side of the transparent mask are hinged to the two ends of the forehead of the helmet. A long scarf is set at the bottom of the 3/4 helmet, and the long scarf is set at the bottom of the helmet and is sutured. The long scarf is wrapped around the neck, and the two ends are connected at the chin with Velcro.

The transparent face mask is connected to the 3/4 helmet shell and the long neckband by zipper: After the closed end of one of the two chain straps of the closed end of a closed zipper extends outward and is left vacant for a certain period, the remaining chain strap is then connected to the transparent face mask side edge at the hinge of the left side of the transparent face mask and the 3/4 helmet by hot melting or sewing with fine threads, all the way to the middle of the lower edge of the transparent face mask. After the closed end of the other chain strap is also extended outward and left vacant for a certain period, the remaining chain strap is then connected to the 3/4 helmet shell and the edge of the long neckband on the left side close to the face by sewing with fine threads in sequence. The two chain straps of the other closed zipper are symmetrically connected to the 3/4 helmet shell, the long neckband and the other side of the transparent face mask in the same way. The transparent face mask on the 3/4 helmet is pulled down to cover the face, and the two ends of the long neckband on the 3/4 helmet are connected with Velcro. Pull the sliders of the two closed zippers down to the middle chin of the lower part of the face. The two sides and the lower edge of the transparent mask are connected to the outer shell of the 3/4 helmet and the edge of the long neckband close to the face by zippers, and the upper edge of the transparent mask is connected to the upper edge of the 3/4 helmet, so that the transparent mask and the face form a closed space. There is also a small hole between the sliders of the two closed zippers, which can be opened and closed freely to allow air circulation. When the transparent mask is lifted up, the sliders of the two closed zippers are pulled to the closed ends of the upper closed zippers. The two chain belts at the upper end of a closed zipper have a section that is not connected to the outer shell of the 3/4 helmet and the transparent mask, forming a V-shaped seam, and the closed end of the other closed zipper has the same V-shaped seam. When the transparent mask is lifted up, when the two ends of the upper edge of the transparent mask and the 3/4 helmet rotate relative to each other, the zipper will not be pulled.

The host is connected to the helmet: there are multiple small holes on the shell of the host, and one end of multiple small suction cups is respectively buckled on the small holes above. Multiple small suction cups on the shell of the host are sucked on the shell of the 3/4 helmet. Or Velcro is attached to the shell of the host, and Velcro is also attached to the shell of the 3/4 helmet or the long neck strip under the 3/4 helmet, and the Velcro on the shell of the host is attached to the shell of the 3/4 helmet or the long neck strip on the 3/4 helmet. The air outlet of the host is connected to an air duct, and the other end of the air duct is connected to the air inlet set on the transparent mask of the 3/4 helmet. Or an air duct inlet is provided on the shell of the 3/4 helmet, and a groove is provided on the buffer foam layer between the 3/4 helmet shell and the buffer foam layer between the air duct inlet and the front edge of the 3/4 helmet. A section of the air duct on the host passes through a groove provided on the buffer foam layer and is arranged therein, and the front port of the air duct is arranged at the upper edge of the transparent mask. A one-way exhaust valve is provided on the transparent mask of the 3/4 helmet.

The user wears a 3/4 helmet, and the long scarf connected to the bottom of the 3/4 helmet is connected to the chin with Velcro. The long scarf can be wrapped around the neck to block the wind. Pull the transparent mask down and close it, and pull the two closed zipper sliders connected to the top of the transparent mask down until they are connected to the chin, so that a relatively closed space is formed between the transparent mask and the face. Turn on the host, the electric fan draws the external air into the host, passes through the air filter, and then enters the space formed between the transparent mask and the face in the 3/4 helmet through the air duct, so that the user can breathe fresh air. The air outlet of the air duct blows downward from the transparent mask, and the transparent mask will not fog up and will not affect the user's vision. The user exhales, and the gas is discharged from the one-way exhaust valve on the transparent mask. The host continuously transports the external air into the transparent mask. There is positive air pressure between the transparent mask and the face, and it is not easy for the external air to enter.

The host is installed on the transparent mask: a host installation port is set at the lower part of the transparent mask on the 3/4 helmet, the edge of the host is snapped on the host installation port on the transparent mask, and a silicone strip is set between the edge of the host and the host installation port on the transparent mask to maintain sealing. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. Or the power supply on the host is separated from the host, and the host and the power supply are connected by a power cord. The host is placed on the head, which is lighter and smaller in size. A host installation port is set on the transparent mask, and a silicone strip is set on the edge of the host installation port. The edge of the host is snapped on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. The host installed on the transparent mask is separated from the host power supply, and the host and the host power supply are connected by wires. The wire interface on the host is set on the outside of the transparent mask, the host power supply is placed in the pocket, and the host and the host power supply are connected by wires. A one-way exhaust valve is set on the transparent mask.

Wear the 3/4 helmet, pull down the transparent mask to close it, connect the two ends of the long scarf, and connect the edge of the transparent mask and the edge of the long scarf with a zipper to close it. Turn on the power switch of the host, the electric fan rotates, and the external air is filtered through the air filter and directly enters the space formed by the transparent mask and the face in the 3/4 helmet, so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve on the transparent mask, and the cycle continues. The host continuously transports the external air to the transparent mask, and the transparent mask is not easy to fog.

Solution 4: The half helmet is connected to the host. A transparent mask is set in front of the half helmet to cover the face. The transparent mask can be opened by flipping up or pulled down to close. The two ends of the transparent mask are hinged to the two ends of the forehead of the helmet. A long scarf is set under the half helmet. The long scarf is set under the helmet and is sutured. The long scarf surrounds the back of the head, neck, ears and left and right cheeks, and the two ends are connected at the chin with Velcro.

The transparent face mask and the long scarf are connected by zipper: After the closed end of one of the two chains of the closed end of a closed zipper is extended outward and left vacant for a certain period, the remaining chain is then connected to the transparent face mask side edge at the hinge of the left side of the transparent face mask and the half helmet by hot melting or sewing with fine threads, all the way to the middle of the lower edge of the transparent face mask. After the closed end of the other chain is also extended outward and left vacant for a certain period, the remaining chain is then connected to the outer shell of the left side of the half helmet and the long scarf under the half helmet close to the edge of the face by fine threads. Another closed zipper is symmetrically connected to the outer shell of the half helmet and the other side of the transparent face mask in the same way. The transparent face mask on the half helmet is pulled down to cover the face, and the two ends of the long scarf on the half helmet are connected with Velcro. Pull the sliders of the two closed zippers down to the middle of the chin at the lower part of the face. The two sides and the lower edge of the transparent mask are connected with the outer shell of the half helmet and the edge of the long scarf under the half helmet close to the face by zippers, and the upper edge of the transparent mask is connected with the upper edge of the half helmet, so that the transparent mask and the face form a closed space. There is also a small hole between the sliders of the two closed zippers, which can be opened and closed freely to allow air circulation. When the transparent mask is lifted up, the sliders of the two closed zippers are pulled to the closed ends of the upper closed zippers. The two chain belts at the upper end of a closed zipper have a section that is not connected to the outer shell of the half helmet and the transparent mask, forming a V-shaped seam, and the closed end of the other closed zipper has the same V-shaped seam. When the transparent mask is lifted up, the two ends of the upper edge of the transparent mask and the half helmet rotate relative to each other without pulling the zipper.

The host is connected to the helmet: there are multiple small holes on the shell of the host, and one end of multiple small suction cups is respectively buckled on the small holes thereon. Multiple small suction cups on the shell of the host are sucked on the shell of the half helmet. Or Velcro is attached to the shell of the host, and Velcro is also attached to the shell of the half helmet or the long neckband on the half helmet, and the Velcro on the shell of the host is attached to the shell of the half helmet or the long neckband under the half helmet. The air outlet of the host is connected to an air duct, and the other end of the air duct is connected to the air inlet set on the transparent mask of the half helmet. Or an air duct inlet is provided on the shell of the half helmet, and a groove is provided on the buffer foam layer between the air duct inlet and the front edge of the half helmet. A section of the air duct on the host passes through a groove provided on the buffer foam layer and is arranged therein, and the front end of the air duct is arranged at the upper edge of the transparent mask. A one-way exhaust valve is provided on the transparent mask of the half helmet.

The user wears a half helmet, and the long scarf connected to the bottom of the half helmet is connected to the chin with Velcro. The long scarf can surround the back of the head, neck, ears, left and right cheeks, and block the wind and sun. Pull the transparent mask down and close it, and pull the sliders of the two closed zippers connected to the top of the transparent mask down until they are connected to the chin, so that a relatively closed space is formed between the transparent mask and the face. Turn on the host, the electric fan draws the external air into the host, passes through the air filter, and then enters the space formed between the transparent mask and the face in the half helmet through the air duct, so that the user can breathe fresh air. The air outlet of the air duct blows downward from the transparent mask, and the transparent mask will not fog up and will not affect the user's vision. The user exhales, and the gas is discharged from the one-way exhaust valve on the transparent mask. The host continuously transports the external air into the transparent mask. There is positive air pressure between the transparent mask and the face, and the external air is not easy to enter.

The host is installed on the transparent mask: a host installation port is set at the lower part of the transparent mask on the half helmet, a silicone strip is set on the host installation port, and the edge of the host is snapped on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. Or the power supply on the host is separated from the host, and the host and the power supply are connected by a power cord. The host is placed on the head, which is lighter and smaller in size. A host installation port is set on the transparent mask, and a silicone strip is set on the edge of the host installation port. The edge of the host is snapped on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. The host installed on the transparent mask is separated from the host power supply, and the host and the host power supply are connected by wires. The wire interface on the host is set on the outside of the transparent mask, the host power supply is placed in the pocket, and the host and the host power supply are connected by wires. A one-way exhaust valve is set on the transparent mask.

Wear the half helmet, pull down the transparent mask to close it, connect the two ends of the long scarf, and connect the edge of the transparent mask and the edge of the long scarf with a zipper to close it. Turn on the power switch of the host, the electric fan rotates, and the external air is filtered through the air filter and directly enters the space formed by the transparent mask and the face in the half helmet, so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve on the transparent mask, and the cycle continues. The host continuously transports the external air to the transparent mask, and the transparent mask is not easy to fog up.

Plan 5: Lei Feng cap, the front edges of the cap are hinged to the upper edges of a transparent mask. The transparent mask blocks the wind and protects the eyes, and can be lifted up or pulled down to cover the face. The Lei Feng cap is divided into two parts, the upper part is worn on the head in a basin shape, the middle part of the lower part covers the back of the head and the back of the shin, and the two long strips on both sides of the lower part cover the ears, cheeks and chin respectively. The lower ends of the two long strips are connected and fixed together to form an irregular exposed circle. The long piece of the lower part of the Lei Feng cap covering the ears and cheeks is called a long strip.

The transparent mask on the Lei Feng cap is connected to the two long strips on the Lei Feng cap by a zipper so that the transparent mask and the face form a closed space: the closed end of one of the two chain belts at the closed end of a closed zipper extends outwards and is vacant for a period of time, and then the remaining chain belt is fixedly connected to the side edge of the transparent mask at the hinge of the left side of the transparent mask and the cap by hot melting or sewing with fine lines, all the way to the middle of the lower edge of the transparent mask. The closed end of the other chain belt is also extended outwards and is vacant for a period of time, and then the remaining chain belt is fixedly connected to the surface of the edge of the long strip on the left side of the cap close to the face by sewing with fine lines. Another closed zipper is symmetrically connected to the other side of the Lei Feng cap and the transparent mask in the same way. The transparent mask on the Lei Feng cap is pulled down to cover the face, and the two long strips on the Lei Feng cap are connected by Velcro. The sliders of the two closed zippers are pulled down to the middle chin of the lower part of the face. The two sides and the lower edge of the transparent mask are connected to the two long strips of the Lei Feng cap by zippers, and the upper edge of the transparent mask is connected to the upper edge of the Lei Feng cap, so that the transparent mask and the face form a closed space. There is a small hole between the sliders of the two closed zippers, which can be opened and closed freely to allow air to circulate. When the transparent mask is lifted up, the sliders of the two closed zippers are pulled to the closed ends of the upper closed zippers. The two chains at the upper end of a closed zipper have a section that is not connected to the cap and the transparent mask, forming a V-shaped seam, and the closed end of the other closed zipper has the same V-shaped seam. When the transparent mask is lifted up, the two ends of the upper edge of the transparent mask and the Lei Feng cap rotate relative to each other, and the zipper will not be pulled.

The Lei Feng cap is connected to the host: Velcro is attached to the shell of the host, and Velcro is also sewn on the Lei Feng cap, and the Velcro on the shell of the host is attached to the Lei Feng cap. The air outlet of the host is connected to an air duct, and the other end of the air duct is connected to the air inlet set on the transparent mask of the Lei Feng cap. Or the Lei Feng cap is provided with an air duct inlet, the air outlet on the host is connected to a section of air duct, and the other end of the air duct passes through the air duct inlet set on the Lei Feng cap, and the front end of the air duct is set at the upper edge of the transparent mask. A one-way exhaust valve is provided on the transparent mask of the Lei Feng cap.

The user wears a Lei Feng cap, and the two long strips under the Lei Feng cap are connected with Velcro at the chin. The two long strips can surround the back of the head, neck, ears, left and right cheeks, and block the wind and sun. Pull the transparent mask down and close it, and pull the two closed zipper sliders connected to the upper side of the transparent mask down until they are connected at the chin, so that a relatively closed space is formed between the transparent mask and the face. Turn on the host, and the electric fan sucks the external air into the host, passes through the air filter, and then enters the space formed between the transparent mask and the face in the Lei Feng cap from the air duct, so that the user can breathe fresh air. The air outlet of the air duct blows downward from the transparent mask, and the transparent mask will not fog up, which will not affect the user's vision. The user exhales, and the gas is discharged from the one-way exhaust valve on the transparent mask. The host continuously transports the external air into the transparent mask. There is positive air pressure between the transparent mask and the face, and the external air is not easy to enter.

The host is installed on the transparent mask: a host installation port is set at the lower part of the transparent mask on the Lei Feng cap, a silicone strip is set on the edge of the host installation port, and the host edge buckle is installed on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. Or the power supply on the host is separated from the host, and the host and the power supply are connected by a power cord. The host is placed on the head, which is lighter and smaller in size. A host installation port is set on the transparent mask, a silicone strip is set on the edge of the host installation port, and the host edge buckle is installed on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. The host installed on the transparent mask is separated from the host power supply, and the host and the host power supply are connected by wires. The wire interface on the host is set outside the transparent mask, the host power supply is placed in the pocket, and the host and the host power supply are connected by wires. A one-way exhaust valve is set on the transparent mask.

Wear the Lei Feng hat, pull down the transparent mask to close it, connect the two long strips at both ends, and connect the edge of the transparent mask and the edge of the two long strips with a zipper to close them. Turn on the power switch of the host, the electric fan rotates, and the external air is filtered through the air filter and directly enters the space formed by the transparent mask and the face in the Lei Feng hat, so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve on the transparent mask, and the cycle continues. The host continuously transports the external air into the transparent mask, and the transparent mask is not easy to fog.

Zipper-type face mask hat: hat, such as: hat on sweater, hat on cotton-padded coat, hood-type hat or Lei Feng hat, etc. The edge around the transparent face mask is connected with the edge around the exposed surface of the hat by zipper. The edge around the exposed surface of the transparent face mask is sewn with a thin thread to connect a chain belt of a zipper, and the two ends of the chain belt are separated. The inner surface part or the outer surface part of the edge part of the exposed surface of the hat is also sewn with a thin thread to connect a chain belt of a zipper, and the two ends of the chain belt are set at the chin of the exposed surface of the hat, and the two ends are separated. A chain belt on the transparent face mask and a chain belt on the hat form an open zipper. One end of a chain belt on the transparent face mask is connected with one end of a chain belt on the hat, and the slider on the open zipper is pulled up all the way to the end, so that the edge of the transparent face mask is installed on the edge part of the exposed surface of the hat.

The transparent mask is connected to the exposed edge of the hat by magnets: when the hood or the hat on the cover or Lei Feng hat is worn, the edge of the hat exposed on the face forms an irregular circle. On the inner surface or outer surface of the exposed edge of the hat, a right-angle silicone strip is sewn with fine lines, and a plurality of small magnets are arranged on the silicone strip.

The two ends of a silicone strip on the hood are connected to form a circular silicone strip. The two ends of the silicone strip on the hood are respectively set on the two sheet-shaped connecting cloths around the chin of the hood (referring to the hat on the top that can be removed or the one-piece cotton-padded jacket or assault jacket); some hats and tops are one-piece, such as sweatshirts, and the two ends of the silicone strip are set on both sides of the collar of the hat (a section of the hat edge at the collar is connected with snaps so that the exposed circular edge of the hat is not too large, which is convenient for installing a transparent mask); when the Lei Feng hat is connected, a silicone strip is sewn and connected to the exposed edge of the hat with a thin thread, and the two ends of the silicone strip are set on the two long cloth strips at the bottom of the Lei Feng hat. The silicone strip with small magnets on the hood is directly buckled and magnetically connected with the transparent mask with small magnets around it. Hooks are set on both ends of the silicone strip on the hat, and the hooks at both ends are connected to form a circle.

A transparent mask, the surface of which is as thin and transparent as the plastic of a disposable mineral water bottle. A plastic strip is arranged around the edge of the transparent mask, and a plurality of small magnets are also arranged on the plastic strip. The number of small magnets arranged on the transparent mask is the same as that arranged on the edge of the exposed surface of the hat.

The transparent mask with small magnets around it is buckled and connected with the exposed edge of the hat, which is also provided with small magnets, and the magnets are fixed by suction. The transparent mask is removed from the hat and installed easily and quickly. When the transparent mask is removed from the hat, the edge of the hat is not round, but the same as that of an ordinary hat, because the silicone strips provided on the hat are soft and very natural.

A Velcro is provided on one side of the host, and a Velcro is also provided on the surface of the hat, and the host is attached to the hat with the Velcro. Alternatively, a hook is provided on the edges of both sides of the transparent mask, and the two ends of a tightening elastic band are hung on the hooks on both sides of the transparent mask, and the tightening elastic band is also tied at the back of the head. A snap plate is provided on the host, and the host is clamped on the tightening elastic band. The air outlet on the host is connected to an air duct, and the other end of the air duct is connected to the air inlet provided on the transparent mask. Alternatively, the air outlet on the host is connected to an air duct, and the other end of the air duct passes through an air duct inlet provided on the hat, and the pipe opening at the other end of the air duct is provided in the transparent mask. A one-way exhaust valve is provided on the transparent mask.

The user wears a headgear hat or a hat on a hood or a Lei Feng hat, and the exposed part of the hat is connected to the transparent mask by zipper or magnet. When in use, the electric fan on the main unit rotates, and the external air enters the main unit through the air filter on the main unit and then enters the transparent mask through the air duct. The user can breathe fresh air. The exhaled gas is then discharged from the one-way exhaust valve on the transparent mask. The cycle continues.

The host is connected to the transparent mask: a host installation port is provided on the transparent mask, a silicone strip is provided on the edge of the host installation port, and the edge of the host is snapped on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. Or the power supply on the host is separated from the host, and the host and the power supply are connected by a power cord. The host is placed on the head, which is lighter and smaller in size. A host installation port is provided on the transparent mask, a silicone strip is provided on the edge of the host installation port, and the edge of the host is snapped on the host installation port on the transparent mask and the edge is kept sealed. The air filter on the host faces outward, and the air outlet on the host is set in the transparent mask. The host installed on the transparent mask is separated from the host power supply, and the host and the host power supply are connected by wires. The wire interface on the host is set on the outside of the transparent mask, the host power supply is placed in the pocket, and the host and the host power supply are connected by wires. A one-way exhaust valve is provided on the transparent mask.

The user wears a hood or a hat on a hood or Lei Feng hat, and the exposed edge of the hat is connected to the transparent mask by zipper or magnet. When in use, turn on the power switch of the host, the electric fan rotates, and the external air is filtered through the air filter and directly enters the transparent mask, so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve on the transparent mask, and the cycle continues.

The transparent mask is very light, thin and transparent. The hat is a hat that is often worn on a top or a hat that is often worn in life. The hat looks natural, comfortable and ordinary. The transparent mask is connected to the hat and is natural, beautiful and light to use. The edge of the transparent mask is set on the inner edge of the hat or the edge of the transparent mask is set on the outer edge of the hat, so that the transparent mask is not easy to show or looks simple and natural. The transparent mask is easy to install or remove and quick. The host is also easy to remove, and the air duct is very short (the air duct is not needed when the host is installed on the transparent mask) and is not visible. It is easy to be accepted and liked by people. Wearing a mask-type air filtration respirator, breathing filtered air is smooth, the mask does not fog, and it is very warm to block wind and sand in winter.

When not in use, the transparent mask is easy to remove, and the hat is still an ordinary hat. The transparent mask is set on the hat, and the transparent mask is set on the hat with a zipper. There are two sliders on the zipper that can be easily pulled open to allow air circulation, or the transparent mask is set on the hat with a magnet. The transparent mask is easy to remove from the hat to avoid the danger of suffocation caused by the hood (the transparent mask on some hoods is integrated with the hood and cannot be removed) being difficult to remove in a panic when the host fails, especially when used by children or special groups.

The headgear is composed of an upper part worn on the head and a lower part which is a cylindrical neck cover. The exposed surface of the headgear is surrounded by an irregular circle. The edge of the transparent mask is connected to the exposed edge of the headgear to form a hood. The headgear material is single-layer or multi-layer. Some single-layer headgears are made of mask fabrics for filtering air, some are made of airtight materials, and some are made of elastic fabrics. The fabrics used for headgear are different according to different seasons. The structure of the headgear is that a round hole is set at the back of the headgear to facilitate the exposure of women's hair. There is an inverted V-shaped opening from the middle to the bottom of the back of the headgear. A vertical zipper is sewn on the inverted V-shaped opening with fine lines. The closed end of the zipper is at the top and the open end is at the bottom, that is, a zipper is set on the inverted V-shaped opening set at the back of the headgear to make the inverted V-shaped opening easy to open and close, so that the user can wear the headgear on the head. A hole is set at the left and right ears of the headgear to facilitate the exposure of the left and right ears, so that the wearer of the headgear looks natural and normal. The upper edge of the exposed surface of the hood is provided with a brim sewn with fine threads, so that the transparent mask installed on the hood is not prominent, looks more natural, and can block the sunlight. An elastic band is installed around the neck cover on the hood, and the two ends of the elastic band are tightened and connected so that the bottom of the hood fits the neck slightly and is not easy to leak. Or one end of an elastic cloth piece is sewn with fine threads to the neck cover on the hood, and Velcro is sewn with fine threads on the outer end of the elastic cloth piece, and Velcro is also sewn with fine threads on the neck cover on the hood. The elastic cloth piece is stretched and extended and then attached to the neck cover on the hood with Velcro so that the bottom of the hood fits the neck and is not easy to leak. The host is installed on the transparent mask, and then connected to the hood to form a hood air filtration respirator. The hood can be worn with a hat connected to a sweater or a hat connected to a cotton coat or a separate hat. It is convenient and natural to use, and the transparent mask is not easy to be seen.

The inner side of the buffer foam layer on the helmet is provided with a mesh air circulation groove, and the inner side of the buffer foam layer in the helmet is provided with a mesh air circulation groove, and the edge of the mesh air circulation groove extends to the edge of the buffer foam layer. An air inlet is provided on the outer shell of the helmet, and the air inlet penetrates the buffer foam layer and is connected with the mesh air circulation groove of the buffer foam layer. An exhaust fan is provided, and a power supply is installed on the exhaust fan. The exhaust fan has an air inlet, and the air inlet on the exhaust fan is inserted into an air inlet provided on the helmet for connection and fixation. When the switch on the exhaust fan is turned on, the exhaust fan rotates, and the air in the mesh air circulation groove space on the buffer foam layer in the helmet is sucked and discharged outside the helmet, and the space between the transparent mask and the face is positive pressure air, and the gas continuously discharged into the transparent mask by the host also flows through the mesh air circulation groove, and then is discharged outside the helmet through an air inlet provided on the outer shell of the helmet. The mesh air circulation groove on the helmet is closely connected with the wearer's hair, and the heat on the head is brought to the outside of the helmet by the air flow, so that people will not feel stuffy and airtight when wearing the helmet.

The beneficial effects of the present invention are as follows: when the helmet type of the hood air filter respirator is used, the transparent mask on the helmet is not easy to fog up and block the user's sight when wearing the helmet to breathe, and the helmet does not need to wear a mask. The hood air filter respirator has a better wearing effect than an electric mask. The main unit is placed on the head, and the air guide tube will not swing during use. The hood air filter respirator has better air sealing than the breathing mask. The neck cover under the hood of the hood air filter respirator gently fits on the neck, and air is not easy to pass through. There is no need to consider the problem of the edge of the mask fitting and sealing with the face that is not flat.

The hood air purifying respirator is easier to wear than the 3M Dustmaster electric air supply dust filter device. Placing the main unit on the hat makes it more convenient for work and going out, more natural and simple. The hat and the transparent mask can be opened or removed or installed easily, which is convenient and quick to use in life, and there will be no risk of suffocation to the user due to host failure.

The transparent mask on the hood air filter respirator can be used with the hat or top in daily life, which looks more natural and ordinary. The hood air filter respirator is worn on the head, and the transparent mask covers the face. In outdoor sandy weather or working in dusty environment, there is no need to worry about the sand blowing into the eyes, and the face and hair can also be well protected (including ladies who wear facial makeup, there is no need to worry that the transparent mask will cover the face and affect the makeup). Breathing the filtered fresh air is easier and more comfortable than wearing other respiratory protective equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a side structural schematic diagram of a full-face helmet-type hood air-filtering respirator.

FIG. 2 is a side structural schematic diagram of a flip-up helmet hood air-filtering respirator.

FIG. 3 is a side structural schematic diagram of a 3/4 helmet hood air filtering respirator.

FIG. 4 is a side structural schematic diagram of a half-helmet hood air-filtering respirator.

Fig. 5 is a side structural schematic diagram of the hood air filtering respirator of the Lei Feng cap with an early-lifting transparent mask.

FIG6 is a schematic diagram of the structure of a hood air-filtering respirator in which a Lei Feng cap and a transparent mask are connected by zipper or magnet.

FIG. 7 is a schematic diagram of the side structure of a hood air-filtering respirator in which the host is mounted on a head cover.

FIG8 is a schematic structural diagram of a headgear-type hat hood air-filtering respirator in which the host is mounted on a transparent mask.

9 is a schematic structural diagram of a hood air filtration respirator in which a main body is mounted on a transparent mask and is composed of a hood on a sweater or a hood on a top connected to a transparent mask by zipper or magnet attraction.

10 is a schematic structural diagram of a hooded air filtering respirator in which a host device is mounted on a hood on a sweater or a hood on a coat connected to a transparent mask by zipper or magnet.

FIG. 11 is a schematic structural diagram of a headgear folded in half.

FIG12 is a schematic diagram of the cross-sectional structure of a helmet cushioning foam layer provided with an air duct.

FIG. 13 is a schematic structural diagram of a cushioning foam layer having mesh air circulation grooves disposed on the inner side thereof.

In the figure, 1, host, 2, air duct, 3, transparent mask, 4, full helmet, 5, flip-up helmet, 6, 3/4 helmet, 7, half helmet, 8, Lei Feng cap, 9, head cover, 10, connecting cap, 11, one-way exhaust valve, 12, helmet shell, 13, cushioning foam layer, 14, extended neck scarf, 15, mesh air circulation groove, 16, zipper, 17, long neck scarf.

DETAILED DESCRIPTION

In FIG1 , the housing of the host (1) is provided with a plurality of small holes, and one end of a plurality of small suction cups is respectively buckled on the small holes thereon. The plurality of small suction cups on the housing of the host (1) are sucked onto the housing of the full-face helmet (4). Alternatively, Velcro is attached to the housing of the host (1), and Velcro is also attached to the housing of the full-face helmet (4) or to the extended neckband (14) below the full-face helmet (4), and the Velcro on the housing of the host (1) is attached to the housing of the full-face helmet (4) or to the extended neckband (14) on the full-face helmet (4). The air outlet of the host (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to the air inlet provided on the transparent mask (3) of the full-face helmet (4). Alternatively, an air duct (2) inlet is provided on the housing of the full-face helmet (4), and a groove is provided on the buffer foam layer (13) between the housing of the full-face helmet (4) and the buffer foam layer (13) between the air duct (2) inlet and the front edge of the full-face helmet (4). A section of the air duct (2) on the main unit (1) passes through a groove provided on the buffer foam layer (13) and is arranged therein, and a front end of the air duct (2) is arranged at the upper edge of the transparent mask (3). A one-way exhaust valve (11) is arranged on the transparent mask (3) of the full-face helmet (4).

The user wears a full-face helmet (4), and an extended neckband (14) is connected to the bottom of the full-face helmet (4) so as to be wrapped around the neck to block the wind. The transparent mask (3) is pulled down and closed, so that a relatively closed space is formed between the transparent mask (3) and the face. The main unit (1) is turned on, and the electric fan sucks the external air into the main unit (1), which is filtered through the air filter and then enters the space formed between the transparent mask (3) on the full-face helmet (4) and the face through the air duct (2), so that the user can breathe fresh air. The air outlet of the air duct (2) blows downward from the transparent mask (3), and the transparent mask (3) will not fog up, and will not affect the user's vision. The user exhales, and the gas is discharged from the one-way exhaust valve (11) on the transparent mask (3), or from the mesh breathable cloth at the chin of the full-face helmet (4), or from the gap between the transparent mask (3) and the full-face helmet (4), or from the air vent at the chin of the full-face helmet (4). The main unit (1) continuously delivers external air to the transparent mask (3), and there is positive air pressure between the transparent mask (3) and the face, so that external air is not easy to enter.

In FIG2 , the housing of the main unit (1) is provided with a plurality of small holes, and one end of a plurality of small suction cups is respectively buckled on the small holes thereon. The plurality of small suction cups on the housing of the main unit (1) are sucked onto the housing of the flip-up helmet (5). Alternatively, Velcro is attached to the housing of the main unit (1), and Velcro is also attached to the housing of the flip-up helmet (5) or to the extended neckband (14) below the flip-up helmet (5), and the Velcro on the housing of the main unit (1) is attached to the housing of the flip-up helmet (5) or to the extended neckband (14) below the flip-up helmet (5). The air outlet of the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to an air inlet provided on the transparent mask (3) of the flip-up helmet (5). Alternatively, an air duct (2) inlet is provided on the outer shell of the flip-up helmet (5), and a groove is provided on the outer shell of the flip-up helmet (5) and the buffer foam layer (13) between the air duct (2) inlet and the front edge of the flip-up helmet (5). A section of the air duct (2) on the host (1) passes through a groove provided on the buffer foam layer (13) and is arranged therein, and a front end of the air duct (2) is arranged at the upper edge of the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3) of the flip-up helmet (5).

The user wears a flip-up helmet (5), and the bottom of the flip-up helmet (5) is connected to an extended neckband (14) that can be wrapped around the neck to block the wind. The transparent mask (3) is pulled down and closed, so that a relatively closed space is formed between the transparent mask (3) and the face. The main unit (1) is turned on, and the electric fan draws the external air into the main unit (1), which is filtered through the air filter and then enters the space formed between the transparent mask (3) and the face in the flip-up helmet (5) through the air duct (2), so that the user can breathe fresh air. The air outlet of the air duct (2) is blown downward from the transparent mask (3), and the transparent mask (3) will not be fogged, which will not affect the user's vision. When the user exhales, the gas is discharged from the one-way exhaust valve (11) on the transparent mask (3), or from the mesh breathable cloth at the chin of the flip-up helmet (5), or from the gap between the transparent mask (3) of the flip-up helmet (5) and the flip-up helmet (5), or from the vent hole at the chin of the flip-up helmet (5). The main unit (1) continuously delivers external air to the transparent mask (3), and there is positive air pressure between the transparent mask (3) and the face, so that external air is not easy to enter.

In FIG3 , a transparent mask (3) is arranged in front of the 3/4 helmet (6) to cover the face. The transparent mask (3) can be lifted up or pulled down to close, and the two ends of the upper side of the transparent mask (3) are hinged to the two ends of the forehead of the helmet. A long neck girdle (17) is arranged at the bottom of the 3/4 helmet (6), and the long neck girdle (17) is arranged at the bottom of the helmet and is sutured. The long neck girdle (17) is wrapped around the neck, and the two ends are connected at the chin with Velcro. The transparent mask (3) is connected to the outer shell of the 3/4 helmet (6) and the long neck girdle (17) by a zipper (16). After the closed end of one of the two chain belts of the closed end of a closed zipper (16) extends outwards and is vacant for a certain period, the remaining chain belt is connected to the transparent mask (3) side edge at the hinged portion of the left side of the transparent mask (3) and the 3/4 helmet (6) by heat melting or sewing with fine threads, all the way to the middle of the lower edge of the transparent mask (3). After the closed end of the other chain belt also extends outwards and is vacant for a certain period, the remaining chain belt is connected to the outer shell of the 3/4 helmet (6) and the surface of the edge portion of the long neckband (17) on the left side close to the face by sewing with fine threads in sequence. The two chain belts of the other closed zipper (16) are symmetrically connected to the outer shell of the 3/4 helmet (6), the long neckband (17) and the other side of the transparent mask (3) in the same way. The transparent mask (3) on the 3/4 helmet (6) is pulled down to cover the face, and the two ends of the long neckband (17) on the 3/4 helmet (6) are connected by Velcro. Pull the sliders of the two closed zippers (16) and pull them down to the middle chin of the lower part of the face. The two sides and the lower edge of the transparent mask (3) are respectively connected to the outer shell of the 3/4 helmet (6) and the edge of the long neckband (17) close to the face by the zipper (16), and the upper edge of the transparent mask (3) is connected to the upper edge of the 3/4 helmet (6), and the transparent mask (3) and the face form a closed space. There is a small hole between the sliders of the two closed zippers (16) that can be opened and closed freely to allow air to circulate. When the transparent mask (3) is lifted up, pull the sliders of the two closed zippers (16) and pull them to the closed ends of the upper closed zippers (16). A section of the two chain belts at the upper end of one closed zipper (16) is not connected to the outer shell of the 3/4 helmet (6) and the transparent mask (3), forming a V-shaped seam, and the closed end of the other closed zipper (16) has the same V-shaped seam. When the transparent mask (3) is lifted up, the two ends of the upper edge of the transparent mask (3) and the 3/4 helmet (6) rotate relative to each other, and the zipper (16) will not be pulled.

The shell of the host (1) is provided with a plurality of small holes, and one end of the plurality of small suction cups is respectively buckled and clamped on the small holes on the holes. The plurality of small suction cups on the shell of the host (1) are sucked on the shell of the 3/4 helmet (6). Alternatively, Velcro is pasted on the shell of the host (1), and Velcro is also pasted on the shell of the 3/4 helmet (6) or on the long neckband (17) below the 3/4 helmet (6), and the Velcro on the shell of the host (1) is pasted on the shell of the 3/4 helmet (6) or on the long neckband (17) on the 3/4 helmet (6). The air outlet of the host (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to an air inlet arranged on the transparent mask (3) of the 3/4 helmet (6). Alternatively, an air duct (2) inlet is provided on the outer shell of the 3/4 helmet (6), and a groove is provided on the outer shell of the 3/4 helmet (6) and the buffer foam layer (13) between the air duct (2) inlet and the front edge of the 3/4 helmet (6). A section of the air duct (2) on the host (1) passes through a groove provided on the buffer foam layer (13) and is provided therein, and a front end of the air duct (2) is provided at the upper edge of the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3) of the 3/4 helmet (6).

The user wears a 3/4 helmet (6), and a long scarf (17) connected to the bottom of the 3/4 helmet (6) is wrapped around the chin and connected with Velcro. The long scarf (17) can be wrapped around the neck to block the wind. The transparent mask (3) is pulled down and closed, and the sliders of the two closed zippers (16) connected to the top of the transparent mask (3) are pulled down until they are connected to the chin, so that a relatively closed space is formed between the transparent mask (3) and the face. The main unit (1) is turned on, and the electric fan sucks the external air into the main unit (1), which is filtered by the air filter and then enters the space formed between the transparent mask (3) and the face in the 3/4 helmet (6) through the air duct (2), so that the user can breathe fresh air. The air outlet of the air duct (2) is blown downward from the transparent mask (3), and the transparent mask (3) will not be fogged, which will not affect the user's vision. When the user exhales, the gas is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the main unit (1) continuously delivers external air into the transparent mask (3). There is a positive air pressure between the transparent mask (3) and the face, and external air is not easy to enter.

The host (1) is mounted on the transparent mask (3): a host (1) mounting opening is provided at the bottom of the transparent mask (3) on the 3/4 helmet (6), the edge buckle of the host (1) is mounted on the host (1) mounting opening on the transparent mask (3), and a silicone strip is provided between the edge of the host (1) and the host (1) mounting opening on the transparent mask (3) to maintain sealing. The air filter on the host (1) faces outward, and the air outlet on the host (1) is provided inside the transparent mask (3). Alternatively, the power supply on the host (1) is separated from the host (1), and the host (1) and the power supply are connected by a power cord. The host (1) is placed on the head with a lighter weight and a smaller volume. A host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge buckle of the host (1) is mounted on the host (1) mounting opening on the transparent mask (3), and the edge is maintained sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged in the transparent mask (3). The host (1) installed on the transparent mask (3) is separated from the host (1) power supply, and the host (1) and the host (1) power supply are connected by wires. The wire interface on the host (1) is arranged outside the transparent mask (3), the host (1) power supply is placed in a pocket, and the host (1) and the host (1) power supply are connected by wires. A one-way exhaust valve (11) is arranged on the transparent mask (3).

Wear the 3/4 helmet (6), pull down the transparent mask (3) to close it, connect the two ends of the long neckband (17), and connect the edge of the transparent mask (3) and the edge of the exposed part of the long neckband (17) with a zipper (16) to close it. Turn on the power switch of the host (1), the electric fan rotates, and the external air is filtered through the air filter and directly enters the space formed by the transparent mask (3) and the face in the 3/4 helmet (6), so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the cycle is continuous. The host (1) continuously transports the external air into the transparent mask (3), and the transparent mask (3) is not easy to fog.

In FIG4 , a transparent mask (3) is arranged in front of the half helmet (7) to cover the face. The transparent mask (3) can be opened by lifting up or closed by pulling down, and the two ends of the upper side of the transparent mask (3) are hinged to the two ends of the forehead of the helmet. A long neckband (17) is arranged under the half helmet (7), and the long neckband (17) is arranged under the helmet and is sutured. The long neckband (17) surrounds the back of the head, the neck, the two ears and the left and right cheeks, and the two ends are connected at the chin with Velcro.

The transparent face mask (3) and the long neckband (17) are connected by a zipper (16): the closed end of one of the two chain belts of the closed end of a closed zipper (16) extends outwards and is vacant for a certain period, and then the remaining chain belt is connected to the transparent face mask (3) side edge at the hinge of the left side of the transparent face mask (3) and the half helmet (7) by heat melting or sewing, until the middle of the lower edge of the transparent face mask (3). The closed end of the other chain belt also extends outwards and is vacant for a certain period, and then the remaining chain belt is connected to the outer shell of the left side of the half helmet (7) and the surface of the long neckband (17) below the half helmet (7) close to the face by sewing. The other closed zipper (16) is symmetrically connected to the outer shell of the half helmet (7) and the other side of the transparent face mask (3) in the same way. The transparent face mask (3) on the half helmet (7) is pulled down to cover the face, and the two ends of the long neckband (17) on the half helmet (7) are connected by Velcro. Pull the sliders of the two closed zippers (16) and pull them down to the middle chin of the lower part of the face. The two sides and the lower edge of the transparent mask (3) are respectively connected to the outer shell of the half helmet (7) and the long neckband (17) under the half helmet (7) by zippers (16) near the edge of the face, and the upper edge of the transparent mask (3) is connected to the upper edge of the half helmet (7), and the transparent mask (3) and the face form a closed space. There is a small hole between the sliders of the two closed zippers (16) that can be opened and closed freely to allow air to circulate. When the transparent mask (3) is lifted up, pull the sliders of the two closed zippers (16) and pull them to the closed ends of the upper closed zippers (16). The two chain belts at the upper end of one closed zipper (16) are not connected to the outer shell of the half helmet (7) and the transparent mask (3) respectively, forming a V-shaped seam, and the closed end of the other closed zipper (16) has the same V-shaped seam. When the transparent mask (3) is lifted up, the zipper (16) will not be pulled when the two ends of the upper edge of the transparent mask (3) and the half helmet (7) rotate relative to each other.

The main unit (1) is connected to the helmet: a plurality of small holes are provided on the outer shell of the main unit (1), and one end of a plurality of small suction cups are respectively buckled on the small holes on the outer shell. The plurality of small suction cups on the outer shell of the main unit (1) are sucked on the outer shell of the half helmet (7). Alternatively, a Velcro is attached to the outer shell of the main unit (1), and a Velcro is also attached to the outer shell of the half helmet (7) or to the long neckband (17) on the half helmet (7), and the Velcro on the outer shell of the main unit (1) is attached to the outer shell of the half helmet (7) or to the long neckband (17) under the half helmet (7). The air outlet of the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to an air inlet provided on a transparent mask (3) of the half helmet (7). Alternatively, an air duct (2) inlet is provided on the shell of the half helmet (7), and a groove is provided on the shell of the half helmet (7) and the buffer foam layer (13) between the air duct (2) inlet and the front edge of the half helmet (7). A section of the air duct (2) on the host (1) passes through a groove provided on the buffer foam layer (13) and is provided therein, and a front end of the air duct (2) is provided at the upper edge of the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3) of the half helmet (7).

The user wears a half helmet (7), and a long scarf (17) connected to the lower side of the half helmet (7) is connected to the chin with Velcro. The long scarf (17) can surround the back of the head, neck, ears, left and right cheeks, and block wind and sun. The transparent mask (3) is pulled down and closed, and the sliders of the two closed zippers (16) connected to the upper side of the transparent mask (3) are pulled down until they are connected to the chin, so that a relatively closed space is formed between the transparent mask (3) and the face. The main unit (1) is turned on, and the electric fan sucks the external air into the main unit (1), which is filtered through the air filter and then enters the space formed between the transparent mask (3) and the face in the half helmet (7) from the air duct (2), so that the user can breathe fresh air. The air outlet of the air duct (2) blows downward from the transparent mask (3), and the transparent mask (3) will not fog up, which will not affect the user's vision. When the user exhales, the gas is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the main unit (1) continuously delivers external air into the transparent mask (3). There is a positive air pressure between the transparent mask (3) and the face, and external air is not easy to enter.

The host (1) is mounted on the transparent mask (3): a host (1) mounting opening is provided at the lower part of the transparent mask (3) on the half helmet (7), a silicone strip is provided on the host (1) mounting opening, and the edge of the host (1) is buckled and mounted on the host (1) mounting opening on the transparent mask (3) and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). Alternatively, the power supply on the host (1) is separated from the host (1), and the host (1) and the power supply are connected by a power cord. The host (1) is placed on the head, which is lighter and smaller in size. A host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge of the host (1) is buckled and mounted on the host (1) mounting opening on the transparent mask (3) and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). The host (1) installed on the transparent mask (3) is separated from the power supply of the host (1), and the power supplies of the host (1) and the host (1) are connected by wires. The wire interface on the host (1) is arranged outside the transparent mask (3), the power supply of the host (1) is placed in a pocket, and the power supplies of the host (1) and the host (1) are connected by wires. A one-way exhaust valve (11) is arranged on the transparent mask (3).

Wear the half helmet (7), pull down and close the transparent mask (3), connect the two ends of the long scarf (17), and connect the edge of the transparent mask (3) and the edge of the exposed part of the long scarf (17) with a zipper (16) to close it. Turn on the power switch of the host (1), the electric fan rotates, and the external air is filtered through the air filter and directly enters the space formed by the transparent mask (3) and the face in the half helmet (7), so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the cycle is continuous. The host (1) continuously transports the external air into the transparent mask (3), and the transparent mask (3) is not easy to fog.

In FIG5 , the Lei Feng cap (8) is hinged at both sides of the front edge of the cap to the two sides of the upper side of a transparent mask (3). The transparent mask (3) blocks the wind and protects the eyes. The transparent mask (3) can be lifted up to open or pulled down to cover the face. The Lei Feng cap (8) is divided into two parts. The upper part is worn on the head in a basin shape. The middle part of the lower part covers the back of the head and the back of the shin. The two long strips on both sides of the lower part cover the ears, cheeks and chin respectively. The lower ends of the two long strips are connected and fixed together to form an irregular exposed circle. The long strips of the lower part of the Lei Feng cap (8) covering the ears and cheeks are called long strips. The transparent mask (3) on the Lei Feng cap (8) and the two long strips on the Lei Feng cap (8) are connected by a zipper (16) so that the transparent mask (3) and the face form a closed space. After the closed end of one of the two chain belts of the closed end of a closed zipper (16) extends outwards and is vacant for a certain period, the remaining chain belt is then connected to the side edge of the transparent mask (3) at the hinged part of the left side of the transparent mask (3) and the hat by heat melting or sewing with fine lines, all the way to the middle of the lower edge of the transparent mask (3). After the closed end of the other chain belt also extends outwards and is vacant for a certain period, the remaining chain belt is then connected to the surface of the edge part of the long strip on the left side of the hat close to the face by sewing with fine lines. The other closed zipper (16) is symmetrically connected to the other side of the Lei Feng hat (8) and the transparent mask (3) in the same way. The transparent mask (3) on the Lei Feng hat (8) is pulled down to cover the face, and the two long strips on the Lei Feng hat (8) are connected by Velcro. The pull heads of the two closed zippers (16) are pulled down to the middle chin of the lower part of the face. The two sides and the lower edge of the transparent mask (3) are respectively connected to the two long strip edge zippers (16) of the Lei Feng cap (8), and the upper edge of the transparent mask (3) is connected to the upper edge of the Lei Feng cap (8), so that the transparent mask (3) and the face form a closed space. There is a small hole between the sliders of the two closed zippers (16) that can be opened and closed freely to allow air to circulate. When the transparent mask (3) is lifted up, the sliders of the two closed zippers (16) are pulled to the closed ends of the upper closed zipper (16). The two chain belts at the upper end of one closed zipper (16) have a section that is not connected to the cap and the transparent mask (3), respectively, to form a V-shaped seam, and the closed end of the other closed zipper (16) has the same V-shaped seam. When the transparent mask (3) is lifted up, when the upper ends of the transparent mask (3) and the Lei Feng cap (8) rotate relative to each other, the zipper (16) will not be pulled.

The Lei Feng cap (8) is connected to the main unit (1). Velcro is attached to the outer shell of the main unit (1), and Velcro is also sewn and connected to the Lei Feng cap (8) by fine thread. The Velcro on the outer shell of the main unit (1) is attached and connected to the Lei Feng cap (8). The air outlet of the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to the air inlet provided on the transparent mask (3) of the Lei Feng cap (8). Alternatively, the Lei Feng cap (8) is provided with an air duct (2) inlet, and the air outlet on the main unit (1) is connected to a section of the air duct (2), and the other end of the air duct (2) passes through the air duct (2) inlet provided on the Lei Feng cap (8), and the front end of the air duct (2) is provided at the upper edge of the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3) of the Lei Feng cap (8). The user wears a Lei Feng cap (8), and the two long strips below the Lei Feng cap (8) are connected with Velcro around the chin. The two long strips can surround the back of the head, the neck, the two ears, the left and right cheeks, and block the wind and sun. The transparent mask (3) is pulled down and closed, and the sliders of the two closed zippers (16) connected to the upper side of the transparent mask (3) are pulled down until they are connected to the chin, so that a relatively closed space is formed between the transparent mask (3) and the face. The main unit (1) is turned on, and the electric fan sucks the external air into the main unit (1), which is filtered by the air filter and then enters the space formed between the transparent mask (3) and the face in the Lei Feng cap (8) through the air duct (2), so that the user can breathe fresh air. The air outlet of the air duct (2) blows downward from the transparent mask (3), and the transparent mask (3) will not fog up, which will not affect the user's vision. When the user exhales, the gas is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the main unit (1) continuously delivers external air into the transparent mask (3). The air between the transparent mask (3) and the face is at positive pressure, and external air is not easy to enter.

The host (1) is mounted on the transparent mask (3): a host (1) mounting opening is provided at the bottom of the transparent mask (3) on the Lei Feng cap (8), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge of the host (1) is buckled and mounted on the host (1) mounting opening on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). Alternatively, the power supply on the host (1) is separated from the host (1), and the host (1) and the power supply are connected by a power cord. The host (1) is placed on the head, which is lighter and smaller in size. A host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1), and the edge of the host (1) is buckled and mounted on the host (1) mounting opening on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). The host (1) installed on the transparent mask (3) is separated from the power supply of the host (1), and the power supplies of the host (1) and the host (1) are connected by wires. The wire interface on the host (1) is arranged outside the transparent mask (3), the power supply of the host (1) is placed in a pocket, and the power supplies of the host (1) and the host (1) are connected by wires. A one-way exhaust valve (11) is arranged on the transparent mask (3).

Wear the Lei Feng cap (8), pull down the transparent mask (3) to close it, connect the two long strips at both ends, and connect the edge of the transparent mask (3) and the edge of the two long strips at the exposed surface with a zipper (16) to close it. Turn on the power switch of the host (1), the electric fan rotates, and the external air is filtered through the air filter and directly enters the space formed by the transparent mask (3) and the face in the Lei Feng cap (8), so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the cycle continues. The host (1) continuously transports the external air into the transparent mask (3), and the transparent mask (3) is not easy to fog.

In FIG6 , the edge around the transparent mask ( 3 ) is connected to the edge around the exposed surface of the Lei Feng cap ( 8 ) by a zipper ( 16 ).

The edge of the transparent mask (3) is sewn with a thin thread to connect a chain of a zipper (16), and the two ends of the chain are separated. The inner surface or outer surface of the edge of the exposed circle of the Lei Feng cap (8) is also sewn with a thin thread to connect a chain of a zipper (16), and the two ends of the chain are arranged at the chin of the exposed surface of the cap, and the two ends are separated. A chain on the transparent mask (3) and a chain on the cap form an open zipper (16). One end of a chain on the transparent mask (3) is connected to one end of a chain on the cap, and the slider on the open zipper (16) is pulled up and pulled around to the joint, so that the edge of the transparent mask (3) is installed on the edge of the exposed circle of the Lei Feng cap (8).

The transparent mask (3) is connected to the exposed edge of the Lei Feng cap (8) by magnet attraction. When worn, the exposed edge of the Lei Feng cap (8) forms an irregular circle. On the inner surface or outer surface of the exposed edge of the cap, a right-angle silicone strip is sewn and connected by fine thread, and a plurality of small magnets are arranged on the silicone strip. When the Lei Feng cap (8) is connected, a silicone strip is sewn and connected to the exposed edge of the cap by fine thread, and the two ends of the silicone strip are arranged on two long cloth strips at the bottom of the Lei Feng cap (8). Hooks are arranged on the two ends of the silicone strip on the cap, and the two ends of the hooks are connected to form a circle. A transparent mask (3), the surface of the transparent mask (3) is as thin and transparent as the plastic of a disposable mineral water bottle. A plastic strip is arranged on the edge of the transparent mask (3), and a plurality of small magnets are also arranged on the plastic strip. The number of small magnets arranged on the transparent mask (3) is the same as the number of small magnets arranged on the exposed edge of the cap. The transparent mask (3) with small magnets around it is buckled and connected with the exposed edge of the Lei Feng hat (8) which is also provided with small magnets, and the magnets are attracted and fixed. The transparent mask (3) is removed from the hat and installed easily and quickly. When the transparent mask (3) is removed from the hat, it is the same as an ordinary hat.

A Velcro is provided on one side of the main unit (1), and a Velcro is also provided on the surface of the hat. The main unit (1) is attached to the Lei Feng hat (8) with the Velcro. The air outlet on the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to an air inlet provided on the transparent mask (3). Alternatively, the air outlet on the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) passes through an air duct (2) inlet provided on the hat, and the other end of the air duct (2) is provided in the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3). The user wears the Lei Feng hat (8), and the exposed area of the hat is connected to the transparent mask (3) by a zipper (16) or a magnet. When in use, the electric fan on the main unit (1) rotates, and the external air enters the main unit (1) through the air filter on the main unit (1), and then enters the transparent mask (3) through the air duct (2). The user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3). The cycle continues.

The host (1) is connected to the transparent mask (3): a host (1) mounting port is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting port, and the edge of the host (1) is buckled and installed on the host (1) mounting port on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). Alternatively, the power supply on the host (1) is separated from the host (1), and the host (1) and the power supply are connected by a power cord. The host (1) is placed on the head, which is lighter and smaller in size. A host (1) mounting port is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting port, and the edge of the host (1) is buckled and installed on the host (1) mounting port on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). The host (1) installed on the transparent mask (3) is separated from the power supply of the host (1), and the power supplies of the host (1) and the host (1) are connected by wires. The wire interface on the host (1) is arranged outside the transparent mask (3), the power supply of the host (1) is placed in a pocket, and the power supplies of the host (1) and the host (1) are connected by wires. A one-way exhaust valve (11) is arranged on the transparent mask (3).

The user wears the Lei Feng cap (8), and the exposed edge of the Lei Feng cap (8) is connected to the transparent mask (3) by a zipper (16) or a magnet. When in use, the power switch of the host (1) is turned on, the electric fan rotates, and the external air is filtered through the air filter and directly enters the transparent mask (3), so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the cycle continues.

The transparent mask (3) is very light, thin and transparent. The Lei Feng hat (8) is a hat that is often worn in daily life. The hat looks natural, comfortable and ordinary. The transparent mask (3) is connected to the hat and is used naturally, beautifully and lightly. The edge of the transparent mask (3) is set in an inlaid manner on the inner edge of the exposed surface of the hat or the edge of the transparent mask (3) is set in an external buckle manner on the outer edge of the exposed surface of the hat, so that the transparent mask (3) is not easy to be seen or looks simple and natural. The transparent mask (3) is easy to install or remove and is quick. If the main unit (1) fails, the transparent mask (3) can also be easily and quickly removed to prevent the risk of suffocation when worn by children. The main unit (1) is also easy to remove, and the airway (2) is very short (the airway (2) is not used when the main unit (1) is installed on the transparent mask (3)) and is not visible. It is easy to be accepted and liked by people. Wearing the mask-type air filter respirator, breathing filtered air is smooth, the mask does not fog up, and it is very warm to block wind and sand in winter.

In FIG. 7 and FIG. 8 , the edge around the transparent mask ( 3 ) is connected to the edge around the exposed surface of the headgear ( 9 ) by means of a zipper ( 16 ).

The edge of the transparent mask (3) is sewn with a thin thread to connect a chain of a zipper (16), and the two ends of the chain are separated. The inner surface or outer surface of the edge of the head cover (9) is also sewn with a thin thread to connect a chain of a zipper (16), and the two ends of the chain are arranged at the chin of the head cover, and the two ends are separated. A chain on the transparent mask (3) and a chain on the head cover form an open zipper (16). One end of a chain on the transparent mask (3) is connected to one end of a chain on the head cover, and the slider on the open zipper (16) is pulled up and pulled around to the joint, so that the edge of the transparent mask (3) is installed on the edge of the head cover (9) that is exposed.

The transparent face mask (3) is connected to the exposed edge of the headgear (9) by magnet attraction. When worn, the exposed edge of the headgear (9) forms an irregular circle. On the inner surface or outer surface of the exposed edge of the headgear (9), a right-angle silicone strip is sewn with fine thread, and a plurality of small magnets are arranged on the silicone strip. A silicone strip is sewn with fine thread to the exposed edge of the headgear (9), and the two ends of the silicone strip are arranged at the lower part of the headgear (9). The two ends of the silicone strip on the headgear (9) are connected to form a circle. A transparent face mask (3), the surface of the transparent face mask (3) is as thin and transparent as the plastic of a disposable mineral water bottle. A plastic strip is arranged on the edge of the transparent face mask (3), and a plurality of small magnets are also arranged on the plastic strip. The number of small magnets arranged on the transparent face mask (3) is the same as the number of small magnets arranged on the exposed edge of the headgear (9). The transparent mask (3) with small magnets around it is buckled and connected with the exposed edge of the headgear (9) which is also provided with small magnets, and the magnets are attracted and fixed. The transparent mask (3) is removed from the headgear (9) and installed easily and quickly. When the transparent mask (3) is removed from the headgear (9), it is the same as an ordinary hat.

A Velcro is provided on one side of the main unit (1), and a Velcro is also provided on the surface of the headgear (9). The main unit (1) is attached to the headgear (9) by the Velcro. The air outlet on the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to an air inlet provided on the transparent mask (3). Alternatively, the air outlet on the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) passes through an air duct (2) inlet provided on the headgear (9), and the other end of the air duct (2) is provided in the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3).

The user wears the headgear (9), and the exposed part of the headgear (9) is connected to the transparent mask (3) by a zipper (16) or a magnet. When in use, the electric fan on the main unit (1) rotates, and the external air enters the main unit (1) through the air filter on the main unit (1) and then enters the transparent mask (3) through the air duct (2). The user can breathe fresh air. The exhaled gas is then discharged from the one-way exhaust valve (11) on the transparent mask (3). The cycle continues.

The host (1) is connected to the transparent mask (3): a host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge of the host (1) is buckled and installed on the host (1) mounting opening on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). Alternatively, the power supply on the host (1) is separated from the host (1), and the host (1) and the power supply are connected by a power cord. The host (1) is placed on the head, which is lighter and smaller in size. A host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge of the host (1) is buckled and installed on the host (1) mounting opening on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). The host (1) installed on the transparent mask (3) is separated from the power supply of the host (1), and the power supplies of the host (1) and the host (1) are connected by wires. The wire interface on the host (1) is arranged outside the transparent mask (3), the power supply of the host (1) is placed in a pocket, and the power supplies of the host (1) and the host (1) are connected by wires. A one-way exhaust valve (11) is arranged on the transparent mask (3).

The user puts on the headgear (9), and the exposed edge of the headgear (9) is connected to the transparent mask (3) by a zipper (16) or a magnet. When in use, the power switch of the host (1) is turned on, the electric fan rotates, and the external air is filtered through the air filter and directly enters the transparent mask (3), so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the cycle continues.

The transparent mask (3) is very light, thin and transparent. The headgear (9) is a hat commonly worn in daily life, for example, when riding outside, it can block wind and dust. The headgear (9) looks natural, comfortable and ordinary. The transparent mask (3) is connected to the headgear (9) and is used naturally, beautifully and lightly. The edge of the transparent mask (3) is set in an inlaid manner on the inner edge of the exposed surface of the headgear (9) or the edge of the transparent mask (3) is set in an external buckle manner on the outer edge of the exposed surface of the headgear (9), so that the transparent mask (3) is not easy to be seen or looks very simple and natural. The transparent mask (3) is easy to install or remove and is quick. If the main unit (1) fails, the transparent mask (3) can also be easily and quickly removed to prevent children from wearing it and suffocating. The main unit (1) is also easy to remove, and the air guide tube (2) is very short (the air guide tube (2) is not used when the main unit (1) is installed on the transparent mask (3)) and is not visible. It is easy to be accepted and liked by people. Wearing a mask-type air-purifying respirator, you can breathe filtered air smoothly, the mask does not fog up, and it can keep out wind and sand and keep you warm in winter, which is very cozy.

In FIG. 9 and FIG. 10 , the hood connected to the sweater, cotton-padded jacket or jacket that can be removed or fixed together is called a hood (10).

The edge around the transparent mask (3) is connected to the edge around the exposed surface of the hood (10) by a zipper (16). The edge around the exposed surface of the transparent mask (3) is sewn with a thin thread to connect a chain of the zipper (16), and the two ends of the chain are separated. The inner surface or outer surface of the edge of the exposed surface of the hood (10) is also sewn with a thin thread to connect a chain of the zipper (16), and the two ends of the chain are arranged at the chin of the exposed surface of the hood (10), and the two ends are separated. A chain on the transparent mask (3) and a chain on the hood (10) form an open zipper (16). One end of a chain on the transparent mask (3) is connected to one end of a chain on the hood (10), and the slider on the open zipper (16) is pulled up and pulled around to the joint, so that the edge of the transparent mask (3) is installed on the edge of the exposed surface of the hood (10).

The transparent face mask (3) is connected to the exposed edge of the hood (10) by magnet attraction. When worn, the exposed edge of the hood (10) on the coat forms an irregular circle. On the inner surface or outer surface of the exposed edge of the hood (10), a right-angle silicone strip is sewn with fine thread, and a plurality of small magnets are arranged on the silicone strip. A silicone strip is sewn with fine thread to the exposed edge of the hood (10), and hooks are arranged at both ends of the silicone strip at the lower part of the hood (10). The hooks at both ends of the silicone strip on the hood (10) are connected to form a circle. A transparent face mask (3), the surface of the transparent face mask (3) is as thin and transparent as the plastic of a disposable mineral water bottle. A plastic strip is arranged on the edge of the transparent face mask (3), and a plurality of small magnets are also arranged on the plastic strip. The number of small magnets arranged on the transparent face mask (3) is the same as the number of small magnets arranged on the exposed edge of the hood (10). The transparent mask (3) with small magnets around it is buckled and connected with the exposed edge of the hood (10) with small magnets on it, and the magnets are attracted and fixed. The transparent mask (3) can be removed from the hood (10) and installed easily and quickly. When the transparent mask (3) is removed from the hood (10), the hood (10) is just a connecting cap on a normal coat.

A Velcro is provided on one side of the main unit (1), and a Velcro is also provided on the surface of the hood (10) on the top. The main unit (1) is attached to the hood (10) with the Velcro. The air outlet on the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to an air inlet provided on the transparent mask (3). Alternatively, the air outlet on the main unit (1) is connected to an air duct (2), and the other end of the air duct (2) passes through an air duct (2) inlet provided on the hood (10), and the other end of the air duct (2) is provided in the transparent mask (3). A one-way exhaust valve (11) is provided on the transparent mask (3).

The user puts on the coat and the hood (10), and the exposed part of the hood (10) is connected to the transparent mask (3) by a zipper (16) or a magnet. When in use, the electric fan on the main unit (1) rotates, and the external air enters the main unit (1) through the air filter on the main unit (1) and then enters the transparent mask (3) through the air duct (2). The user can breathe fresh air. The exhaled gas is then discharged from the one-way exhaust valve (11) on the transparent mask (3). The cycle continues.

The host (1) is connected to the transparent mask (3): a host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge of the host (1) is buckled and installed on the host (1) mounting opening on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). Alternatively, the power supply on the host (1) is separated from the host (1), and the host (1) and the power supply are connected by a power cord. The host (1) is placed on the head, which is lighter and smaller in size. A host (1) mounting opening is provided on the transparent mask (3), a silicone strip is provided on the edge of the host (1) mounting opening, and the edge of the host (1) is buckled and installed on the host (1) mounting opening on the transparent mask (3), and the edge is kept sealed. The air filter on the host (1) faces outward, and the air outlet on the host (1) is arranged inside the transparent mask (3). The host (1) installed on the transparent mask (3) is separated from the power supply of the host (1), and the power supplies of the host (1) and the host (1) are connected by wires. The wire interface on the host (1) is arranged on the outside of the transparent mask (3), the power supply of the host (1) is placed in a pocket, and the power supplies of the host (1) and the host (1) are connected by wires. A one-way exhaust valve (11) is arranged on the transparent mask (3). The user puts on a coat and a hood (10), and the exposed edge of the hood (10) is connected to the transparent mask (3) by a zipper (16) or a magnet. When in use, the power switch of the host (1) is turned on, the electric fan rotates, and the external air is filtered through an air filter and directly enters the transparent mask (3), so that the user can breathe fresh air. The gas exhaled by the user is discharged from the one-way exhaust valve (11) on the transparent mask (3), and the cycle continues.

The transparent mask (3) is very light, thin and transparent. The hood (10) on the coat is a hat that is often worn in daily life, for example, when riding outside, it can block wind and dust. The hood (10) looks natural, comfortable, ordinary and easy to wear. The transparent mask (3) is connected to the hood (10) for natural, beautiful and light use. The edge of the transparent mask (3) is set in an inlaid manner on the exposed inner edge of the hood (10) or the edge of the transparent mask (3) is set in an external buckle manner on the exposed outer edge of the hood (10), so that the transparent mask (3) is not easy to be seen or looks very simple and natural. The transparent mask (3) is easy to install or remove and is quick. If the main unit (1) fails, the transparent mask (3) can also be easily and quickly removed to prevent children from wearing it and suffocating. The main unit (1) is also easy to remove, and the airway (2) is very short (the airway (2) is not used when the main unit (1) is installed on the transparent mask (3)) and is not visible. It is easy to be accepted and liked by people. Wearing a mask-type air-purifying respirator, you can breathe filtered air smoothly, the mask does not fog up, and it can keep out wind and sand and keep you warm in winter, which is very cozy.

In FIG11 , the headgear (9) is composed of an upper part worn on the head and a lower part which is a cylindrical neck cover. The exposed surface of the headgear (9) is surrounded by an irregular circle. The edge of the transparent mask (3) is connected to the exposed edge of the headgear (9) to form a headgear. The headgear material is single-layer or multi-layer. The single-layer headgear (9) is made of mask fabric for filtering air, airtight material, or elastic fabric. The fabric used for the headgear (9) is different according to the season.

The structure of the headgear (9) is that a round hole is arranged at the back of the headgear (9) to facilitate the exposure of the lady's hair. An inverted V-shaped opening is arranged from the middle to the bottom of the back of the headgear (9). A vertical zipper (16) is sewn with fine lines on the inverted V-shaped opening. The closed end of the zipper (16) is at the top and the open end is at the bottom. That is, a zipper (16) is arranged on the inverted V-shaped opening arranged at the back of the headgear (9) to facilitate the opening and closing of the inverted V-shaped opening, so that the user can wear the headgear (9) on the head. A hole is arranged at the left and right ears of the headgear (9) to facilitate the exposure of the left and right ears, so that the wearer of the headgear (9) looks natural and normal. A brim sewn with fine lines is arranged on the upper edge of the exposed surface of the headgear (9), so that the transparent mask (3) installed on the headgear (9) is not prominent, more natural, and can also block sunlight. An elastic band is installed around the neck cover on the head cover (9), and the two ends of the elastic band are tightened and connected so that the lower side of the head cover (9) is slightly fitted to the neck and is not easy to leak. Alternatively, one end of an elastic cloth piece is sewn to the neck cover on the head cover (9) with a thin thread, and a Velcro is sewn on the outer end of the elastic cloth piece with a thin thread, and the neck cover on the head cover (9) is also sewn with a Velcro with a thin thread. The elastic cloth piece is stretched and extended and then attached to the neck cover on the head cover (9) with the Velcro so that the lower side of the head cover (9) is fitted to the neck and is not easy to leak.

The host (1) is installed on the transparent mask (3), and then connected to the headgear (9) to form a headgear air filtering respirator. A hat connected to a sweater or a hat connected to a cotton coat or a separate hat can be worn on the headgear (9). The use is convenient and natural, and the transparent mask (3) is not easy to be seen.

In FIG12 , an air duct (2) inlet is provided on the helmet shell (12), and a groove is provided on the helmet shell (12) and the buffer foam layer (13) between the air duct (2) inlet and the front edge of the helmet. The host (1) is provided on the helmet shell (12), the air outlet of the host (1) is connected to an air duct (2), the other end of the air duct (2) passes through a groove provided on the buffer foam layer (13) and is provided therein, and the front end of the air duct (2) is provided at the upper edge of the transparent mask (3). The helmet is provided with the host (1), the other end of the air duct (2) connected to the host (1) is provided in the transparent mask (3), and the air duct (2) is not easily visible.

In Fig. 13, the inner side of the cushioning foam layer (13) on the helmet is provided with a mesh air circulation groove (15), and the inner side of the cushioning foam layer (13) in the helmet is provided with a mesh air circulation groove (15), and the edge of the mesh air circulation groove (15) extends to the edge of the cushioning foam layer (13). The helmet shell (12) is provided with an air inlet, which penetrates the cushioning foam layer (13) and is connected to the mesh air circulation groove (15) of the cushioning foam layer (13).

An exhaust fan is provided, a power source is installed on the exhaust fan, an air inlet is provided on the exhaust fan, and the air inlet on the exhaust fan is inserted into an air inlet provided on the helmet and connected and fixed. When a switch on the exhaust fan is turned on, the exhaust fan rotates, and air in the space of the mesh air circulation groove (15) on the buffer foam layer (13) in the helmet is sucked and discharged outside the helmet. The mesh air circulation groove (15) on the helmet is closely connected with the hair of the wearer, and the heat on the head is brought outside the helmet by the air flow, so that people wearing the helmet will not feel stuffy and airtight.

Claims (3)

1. A head cover air filtering respirator, the head cover is composed of a helmet and a transparent mask (3), a main unit (1) is composed of an air filter, an electric fan, a power supply and a shell, the helmets are full-face helmets (4), flip-up helmets (5), 3/4 helmets (6) and half-face helmets (7), the full-face helmet (4) is composed of a helmet shell (12), an internal buffer foam layer (13), a snap-on tightening belt and a transparent mask (3) and an extended neck girdle (14), the 3/4 helmet (6) is basically the same as the full-face helmet (4), and also has a long neck girdle (17), but the difference is that the chin is not wrapped, the half-face helmet (7) is basically the same as the full-face helmet (4), and also has a sheet-shaped neck girdle, but the difference is that the chin is not wrapped, and the buffer material in the shell (12) of the half-face helmet (7) is either buffer foam or mesh plastic strips, and the characteristics are: The technical scheme of the 3/4 helmet (6) is as follows: a transparent mask (3) is arranged in front of the 3/4 helmet (6) to cover the face, the transparent mask (3) can be lifted up or pulled down to close, and the two ends of the upper side of the transparent mask (3) are hinged to the two ends of the forehead of the helmet; a long neck scarf (17) is arranged at the bottom of the 3/4 helmet (6), the long neck scarf (17) is arranged at the bottom of the helmet and is sewed and connected, the long neck scarf (17) is wrapped around the neck, and the two ends are connected at the chin with Velcro; the two sides and the lower edge of the transparent mask (3) are respectively connected to the outer shell of the 3/4 helmet (6) and the edge part of the long neck scarf (17) close to the face by a zipper (16), the upper edge of the transparent mask (3) is connected to the upper edge of the 3/4 helmet (6), and the transparent mask (3) is connected to the upper edge of the 3/4 helmet (6). ) and the face form a closed space, and there is a small hole between the sliders of the two closed zippers (16) that can be opened and closed freely to allow air to circulate; or, the two sides and the lower edge of the transparent mask (3) are respectively connected to the outer shell of the 3/4 helmet (6) and the edge of the long neckband (17) close to the face by zippers (16), the upper edge of the transparent mask (3) is connected to the upper edge of the 3/4 helmet (6), the transparent mask (3) and the face form a closed space, and a one-way exhaust valve (11) is provided on the transparent mask (3) of the 3/4 helmet (6); a plurality of small holes are provided on the outer shell of the main unit (1), one end of the plurality of small suction cups are respectively buckled on the small holes thereon, and the plurality of small suction cups on the outer shell of the main unit (1) are sucked on the 3/4 helmet (6) ); or the shell of the host (1) is pasted with Velcro, and the shell of the 3/4 helmet (6) or the long neckband (17) under the 3/4 helmet (6) is also pasted with Velcro, and the Velcro on the shell of the host (1) is pasted on the shell of the 3/4 helmet (6) or the long neckband (17) on the 3/4 helmet (6); the air outlet of the host (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to the air inlet provided on the transparent mask (3) of the 3/4 helmet (6), or the shell of the 3/4 helmet (6) is provided with an air duct (2) inlet, and the shell of the 3/4 helmet (6) between the air duct (2) inlet and the front edge of the 3/4 helmet (6) is connected to the buffer foam layer ( 13) is provided with a groove, a section of the air duct (2) on the main unit (1) passes through the groove provided on the buffer foam layer (13) and is provided therein, and the front end of the air duct (2) is provided at the upper edge of the transparent mask (3); the air outlet of the air duct (2) blows downward from the transparent mask (3), and the transparent mask (3) will not fog; or, the main unit (1) is installed on the transparent mask (3), a main unit (1) installation port is provided at the lower part of the transparent mask (3) on the 3/4 helmet (6), the edge buckle of the main unit (1) is installed on the main unit (1) installation port on the transparent mask (3), and the air outlet on the main unit (1) is provided in the transparent mask (3); The technical scheme of the half helmet (7) is as follows: a transparent mask (3) is arranged in front of the half helmet (7) to cover the face; the transparent mask (3) can be lifted up to open or pulled down to close; the two ends of the upper side of the transparent mask (3) are hinged to the two ends of the forehead of the helmet; a long scarf (17) is arranged at the lower side of the half helmet (7); the transparent mask (3) on the half helmet (7) is pulled down to cover the face, and the two ends of the long scarf (17) on the half helmet (7) are connected by Velcro; the two sides and the lower edge of the transparent mask (3) are respectively connected to the outer shell of the half helmet (7) and the edge part of the long scarf (17) at the lower side of the half helmet (7) close to the face by a zipper (16); the upper edge of the transparent mask (3) is connected to the upper edge of the half helmet (7) The transparent mask (3) and the face form a closed space, and there is a small hole between the sliders of the two closed zippers (16) that can be opened and closed freely to allow air to circulate, or the two sides and the lower edge of the transparent mask (3) are respectively connected to the outer shell of the half helmet (7) and the edge of the long neckband (17) under the half helmet (7) close to the face by a zipper (16), the upper edge of the transparent mask (3) is connected to the upper edge of the half helmet (7), the transparent mask (3) and the face form a closed space, and a one-way exhaust valve (11) is arranged on the transparent mask (3) of the half helmet (7); a plurality of small holes are arranged on the outer shell of the main unit (1), one end of the plurality of small suction cups are respectively buckled on the small holes on the upper shell, and the main unit (1) ) multiple small suction cups on the shell are sucked onto the shell of the half helmet (7); or Velcro is attached to the shell of the host (1), and Velcro is also attached to the shell of the half helmet (7) or the long neckband (17) on the half helmet (7), and the Velcro on the shell of the host (1) is attached to the shell of the half helmet (7) or the long neckband (17) under the half helmet (7); the air outlet of the host (1) is connected to an air duct (2), and the other end of the air duct (2) is connected to the air inlet provided on the transparent mask (3) of the half helmet (7), or an air duct (2) inlet is provided on the shell of the half helmet (7), and the half helmet (7) between the air duct (2) inlet and the front edge of the half helmet (7) A groove is provided on the buffer foam layer (13) between the outer shell and the buffer foam layer (13), a section of the air duct (2) on the main unit (1) passes through the groove provided on the buffer foam layer (13) and the front end of the air duct (2) is provided at the upper edge of the transparent mask (3); the air outlet of the air duct (2) blows downward from the transparent mask (3), and the transparent mask (3) will not fog; or, a main unit (1) mounting port is provided at the lower part of the transparent mask (3) on the half helmet (7), the edge buckle of the main unit (1) is mounted on the main unit (1) mounting port on the transparent mask (3), and the air outlet on the main unit (1) is provided in the transparent mask (3). 2. The hood air-filtering respirator according to claim 1 is characterized in that: after the closed end of one of the two chain straps of the closed end of a closed zipper (16) is extended outwards and left vacant for a certain period, the remaining part of the chain strap is then connected to the transparent mask (3) at the left side of the transparent mask (3) at the hinge of the 3/4 helmet (6) by heat melting or sewing with fine threads, all the way to the middle of the lower edge of the transparent mask (3); after the closed end of the other chain strap is also extended outwards and left vacant for a certain period, the remaining chain strap is then connected to the outer shell of the 3/4 helmet (6) and the edge of the long neckband (17) on the left side close to the face by sewing with fine threads in sequence; the two chain straps of the other closed zipper (16) are symmetrically connected to the outer shell of the 3/4 helmet (6), the long neckband (17) and the transparent mask (3) in the same way. ); the transparent mask (3) is connected to the outer shell of the 3/4 helmet (6) and the long neck scarf (17) by a zipper (16); the transparent mask (3) on the 3/4 helmet (6) is pulled down to cover the face, and the two ends of the long neck scarf (17) on the 3/4 helmet (6) are connected by Velcro; when the transparent mask (3) is lifted up, the sliders of the two closed zippers (16) are pulled to the closed ends of the upper closed zipper (16), and the two chain belts at the upper end of one closed zipper (16) are not connected to the outer shell of the 3/4 helmet (6) and the transparent mask (3) respectively, forming a V-shaped seam, and the closed end of the other closed zipper (16) has the same V-shaped seam; the user wears the 3/4 helmet (6), and the long neck scarf (17) connected to the lower side of the 3/4 helmet (6) is connected to the chin by Velcro. 3. The hood air-filtering respirator according to claim 1 is characterized in that: after the closed end of one of the two chain straps of the closed end of a closed zipper (16) is extended outward for a period of time, the remaining chain strap is then connected to the side of the transparent mask (3) at the hinge of the left side of the transparent mask (3) and the half helmet (7) by hot melting or sewing with fine threads, all the way to the middle of the lower edge of the transparent mask (3); after the closed end of the other chain strap is also extended outward for a period of time, the remaining chain strap is then connected to the outer shell of the left side of the half helmet (7) and the surface of the long neck scarf (17) under the half helmet (7) close to the edge of the face by fine threads in sequence; the other closed zipper The chain (16) is symmetrically connected to the outer shell of the half helmet (7) and the other side of the transparent mask (3) in the same way; the long neckband (17) is arranged at the bottom of the helmet and is sewed and connected, the long neckband (17) surrounds the back of the head, the neck, the two ears and the left and right cheeks, and the two ends are connected at the chin with Velcro; when the transparent mask (3) is lifted up, the sliders of the two closed zippers (16) are pulled to the closed ends of the upper closed zipper (16), and a section of the two chain belts at the upper end of one closed zipper (16) is not connected to the outer shell of the half helmet (7) and the transparent mask (3), respectively, to form a V-shaped seam, and the closed end of the other closed zipper (16) has the same V-shaped seam.