CN111317929A - Protective head cover - Google Patents

Abstract

The present invention relates to medical equipment, in particular to a protective headgear, which can seal well, breathe smoothly, and effectively improve the comfort and safety of users, including: a flexible headgear with a lower opening surrounding the user's neck; a mask assembly , which includes: an upper bracket; and a transparent mask mounted to the upper bracket and closedly disposed on the front portion of the hood; a neck cover assembly at least partially surrounding the lower portion of the hood, and The lower opening is selectively tightened and loosened; an air filter device includes: a filter element, an air intake pipe leading into the hood, and an air outlet pipe leading into the hood, wherein the filter element has a The effective area is greater than 250 square centimeters; the air guide assembly includes: an air guide hood fastened to the user's mouth and nose, and an air guide tube connected from the air filter device to the air guide hood.

Description

protective hood

technical field

The present invention relates to medical instruments, in particular to a protective headgear.

Background technique

With the spread of the new coronavirus (2019-nCoV) epidemic, with the increase in the number of confirmed cases, medical protection is very important. Not only the medical staff who are fighting the epidemic on the front line need N95 protective masks, protective clothing, etc., but also some people who provide basic living guarantees ( For example, taxi drivers, couriers, service workers in supermarkets or restaurants, etc.) due to the higher risk of infection, better protective measures are also required. In addition, the elderly or people with chronic diseases have a higher proportion of severe pneumonia or death. Therefore, stricter protection measures are urgently needed when contacting with the outside world or others.

At present, the common protective equipment used in medical, dust and other places is a mask, and in some special occasions (such as in an environment exposed to toxic gases), protective masks are often used.

Although masks are convenient to use, there are some problems:

(1) In order to filter viruses, medical masks have small gaps in the air filter cloth or filter core, the effective area of the breathable material is small, and the air permeability is poor, so the breathing resistance is large, making it difficult to breathe, and wearing it for a long time is easy to cause breathing. Discomfort (for example, experts recommend that N95 masks be used for no more than 4 hours), which affects the comfort of medical staff. More seriously, due to the large resistance of air passing through, a large air pressure difference between the inside and outside is required to ensure sufficient air flow for the user to breathe. Such a large air pressure difference can easily damage the sealing between the mask and the face. If the seal is not tight, air leakage may occur, which affects the safety of the mask and poses a health risk to medical staff who work on the front line of epidemic prevention for a long time.

(2) The protective area of the mask is small. For medical staff working in hazardous environments, protection of other face and head positions such as eyes cannot be achieved.

(3) The sealing performance of the mask is poor. Due to different wearing methods, face shapes, etc., it cannot be effectively sealed, thereby causing health risks to the wearer.

For protective masks, there are also problems of small effective area of breathable materials, poor air permeability, and large breathing resistance. However, some more professional head-mounted gas masks (such as fire masks) are complicated in structure and use, and are not suitable for medical staff to wear at work, nor for ordinary people to wear when going out every day.

SUMMARY OF THE INVENTION

According to the embodiments of the present invention, a protective headgear is provided, which can seal well, breathe smoothly, and effectively improve the comfort and safety of users.

According to an embodiment of the present invention, a protective headgear is provided, comprising:

a flexible hood having a lower opening around the user's neck;

a mask assembly comprising: an upper bracket; and a transparent mask mounted to the upper bracket and sealingly disposed on the front portion of the hood;

a collar assembly at least partially surrounding the lower portion of the hood and selectively tightening and loosening the lower opening;

An air filter device, comprising: a filter element, an air inlet pipe leading into the hood, and an air outlet pipe leading into the hood, wherein the effective area of the filter element is greater than 250 square centimeters;

An air guide assembly includes: an air guide cover fastened to the mouth and nose of a user, and an air guide tube connected from the air filter device to the inside of the air guide cover.

Preferably, in any embodiment,

The filter element includes: a filter structure with a pore diameter of less than 0.3 microns.

Preferably, in any embodiment,

The air filtration device includes additional physical filters.

Preferably, in any embodiment,

The air filtration device includes an additional chemical filter.

Preferably, in any embodiment,

The inner surface of the mask includes an anti-fog coating.

Preferably, in any embodiment,

An active defogging device, which includes a defogging pipe leading into the hood.

Preferably, in any embodiment,

An active ventilation system including ventilation ducts leading into the hood.

Preferably, in any embodiment,

The edge of the air hood includes an elastic structure.

The protective headgear provided by the embodiment of the present invention can be well sealed and the breathing is smooth, thereby effectively improving the comfort and safety of the user.

Description of drawings

FIG. 1 is a schematic structural diagram of a protective headgear according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an air guide of a protective headgear according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The main problems of general masks are: poor breathing and insufficient safety protection performance. The reason for the insufficient safety protection performance is that the edge of the mask is sealed with the skin and there is a possibility of air leakage, and the mask cannot protect the eyes and other faces/heads. On the other hand, some advanced protective clothing can ensure unobstructed breathing while providing safety protection. However, such protective clothing is expensive and cumbersome to use and wear.

Considering the advantages and disadvantages of masks and protective clothing, the present invention proposes a protective headgear that is safe, reliable, easy to wear and wear, and breathes smoothly, which can be used to meet most needs of a wide range of civil and medical occasions.

According to the embodiments of the present invention, a protective headgear is provided, which can seal well, breathe smoothly, and effectively improve the comfort and safety of users.

According to an embodiment of the present invention, a protective headgear is provided, comprising:

a flexible hood having a lower opening around the user's neck;

a mask assembly comprising: an upper bracket; and a transparent mask mounted to the upper bracket and sealingly disposed on the front portion of the hood;

a collar assembly at least partially surrounding the lower portion of the hood and selectively tightening and loosening the lower opening;

An air filter device, comprising: a filter element, an air inlet pipe leading into the hood, and an air outlet pipe leading into the hood, wherein the effective area of the filter element is greater than 250 square centimeters;

An air guide assembly includes: an air guide cover fastened to the mouth and nose of a user, and an air guide tube connected from the air filter device to the inside of the air guide cover.

In this way, the protective headgear adopts a fully enclosed design to achieve all-round protection for the parts above the shoulders of a person, and the flexible headgear body can be adapted to different user head shapes. The front opening of the front of the hood is sealed by a transparent mask to provide a wide field of vision for the user, and the lower opening under the neck of the hood is tightened or loosened by the annular sleeve of the neck cover assembly to achieve a closed effect. The effective area of the filter element (for example, including the filter screen) of the air filter is greater than 250 square centimeters, so it has a large enough effective ventilation area, which can ensure smooth breathing while the pressure difference between the inside and outside is small. This filter screen is easy to replace (according to If necessary, different levels of filters can be used). For smooth air circulation, the ventilation system of the hood can be optimized using aerodynamic principles to improve the user's protective breathing.

In addition, the configuration of the air guide assembly in the hood can further improve the breathing condition. The user's mouth and nose covered by the air guide hood can be directly connected to the air filter device to form a local comfortable breathing environment, so that the internal breathing air can be exchanged with the outside world. More open, easier breathing.

In addition, by replacing the existing medical mask with the protective hood, the user does not need to tighten the mask straps to prevent the penetration of bacteria (this often causes excessive force or friction on the back of the ear or the face to be damaged) , which not only improves user comfort, but also avoids unnecessary user injury. It should be noted that the air guide hood that is fastened to the user's mouth and nose is mainly used to further improve the local breathing environment of the user (as mentioned above), and the edge of the air guide hood is not strictly required to be tightly fastened to the user's skin. Skin damage to the user can be significantly reduced.

It can be seen that the protective headgear provided by the embodiment of the present invention can be well sealed, and the breathing is smooth, thereby effectively improving the comfort and safety of the user.

Wherein, the "effective area" of the filter element of the air filter refers to the area that acts on filtration in actual use, which is much larger than the assembly area after folding or compression. For example, the effective area (equivalent to the unfolded area) of the filter screen or filter paper is much larger than the assembly area formed by multiple folding (eg, wave-folding).

Preferably, in any embodiment, the filter element comprises: a filter structure with a pore diameter of 0.3 microns or less. In this way, pollutants such as fine dust and bacteria can be effectively filtered out.

In one embodiment, optionally, the filter element includes: a filter structure with a pore diameter of 0.1-0.3 microns.

In one embodiment, optionally, the filter element may include a HEPA (High Efficiency Air Filter) screen. The characteristics of the HEPA filter are: the air can pass through, but the fine particles cannot. The removal rate of 0.1-0.3 micron particles can reach 99.7%, and the removal rate of particles above 0.3 microns can reach 99.97%. Effective filter media for contaminants such as dust and bacteria.

In one embodiment, the filter element may optionally comprise a multi-layer structure.

In one embodiment, the filter element may optionally include a layer of fibrous meltblown material to form a barrier filter layer (eg, formed from a micro-polypropylene meltblown cloth).

In one embodiment, optionally, the filter element may include a bacteriostatic layer (eg, formed by non-woven fabric or ultra-thin polypropylene meltblown cloth).

In one embodiment, the filter element may optionally include an electrostatic high density filter layer.

In one embodiment, optionally, the air filter device includes a filter element frame for fixing the filter element.

Preferably, in any embodiment, the air filtration device includes an additional physical filter.

In one embodiment, the additional physical filter optionally includes a physical adsorption structure.

Preferably, in any embodiment, the air filtration device includes an additional chemical filter.

In one embodiment, the additional chemical filter optionally includes a chemical adsorption structure.

Preferably, in any embodiment, the inner surface of the mask includes an anti-fog coating. In this way, the sight can be effectively avoided due to the condensation of water vapor in the breathing air into fog.

Preferably, in any of the embodiments, the protective hood further comprises: an active defogging device comprising a defogging pipe leading into the hood. In this way, not only is water vapor fogging effectively removed, but the inside of the hood is kept relatively dry, which is especially useful in humid or high temperature applications.

In one embodiment, optionally, the active defogging device includes an electric fan.

In one embodiment, optionally, the active defogging device includes: a battery, an electric fan, a duct and an airflow distributor. In this way, the airflow distributor can evenly blow the airflow from the duct to the inside of the transparent mask to remove the mist.

In one embodiment, optionally, the nozzle of the airflow distributor is jetted towards the mask.

In one embodiment, optionally, the nozzle of the airflow distributor sprays air from the top of the head toward the mask.

In one embodiment, optionally, the nozzle of the airflow distributor is jetted toward the mask from below (eg, at the user's chin and chin).

In one embodiment, optionally, the nozzle of the airflow distributor has an adjustable jet angle.

In one embodiment, optionally, the nozzle of the airflow distributor sweeps the jet of air at a predetermined angular range (eg, a horizontal angular range or a vertical angular range) towards the mask.

In one embodiment, optionally, the nozzle of the airflow distributor swept the air jet left and right towards the mask at a horizontal angle ranging from 0 to 180 degrees (in particular, it may be 0 to 90 degrees).

In one embodiment, optionally, the nozzle of the airflow distributor sweeps the air jet up and down toward the mask at a vertical angle ranging from 0 to 90 degrees (in particular, it may be 0 to 60 degrees).

In one embodiment, optionally, the nozzle of the airflow distributor has a circular or flat shape.

In one embodiment, optionally, the nozzle of the airflow distributor comprises a plurality of nozzles.

In one embodiment, optionally, the nozzles of the airflow distributor include a plurality of nozzles facing in different directions.

In one embodiment, optionally, the defogging air stream sprayed by the air distributor is circulated inside the hood.

In one embodiment, optionally, the protective hood further comprises: a dehumidification device.

Preferably, in any embodiment, the protective hood further comprises: an active ventilation system including a ventilation duct leading into the hood. In this way, the environment inside the headgear can be ventilated more quickly and effectively, and the user can breathe fresh air more easily.

In one embodiment, the active ventilation system optionally includes an electric fan.

In one embodiment, optionally, the active ventilation system includes: a battery, an electric fan, an air intake pipe (for example, an air intake pipe leading to an air filter device in the hood, or an air conduit leading to the air guide hood), and an air intake pipe. The hood (for example, an air guide hood that is fastened to the user's mouth and nose) has an air outlet with a filter structure (to prevent the backflow of external air).

In one embodiment, optionally, in an active ventilation system, the electric fan and intake duct are mounted behind the intake filter element of the air filter (ie, the downstream side of the air flow), that is, inside the hood.

Preferably, in any embodiment, the edge of the air hood includes an elastic structure. In this way, the elastic structure can be adapted to the specific face shapes of different users, thereby enhancing the sealing fit.

In one embodiment, optionally, the hood has a front opening, and the mask closes the front opening.

In another embodiment, the headgear and the mask are optionally formed in one piece.

In one embodiment, optionally, the upper bracket is at least partially flexible. In this way, it can better adapt to the head shape of different users.

In one embodiment, optionally, an upper bracket is fixed to the upper portion of the hood.

In one embodiment, optionally, the upper bracket is secured to the hood by its elastic portion. In this way, it can better adapt to the head shape of different users.

In one embodiment, optionally, the upper support includes an annular portion surrounding the user's forehead portion. In this way, the mask can better maintain its structural shape and strength, or better close the front opening of the hood through the upper bracket, so as to avoid local structural deformation caused by the unstable center of gravity and affecting the sealing performance.

In one embodiment, optionally, the mask is connected to the upper bracket through a hinge structure and can be flipped upwards. In this way, the user does not have to take off the entire protective hood, but only needs to open the mask when needed (for example, when the medical staff takes a meal break), thereby saving time and improving efficiency.

In one embodiment, optionally, the edges of the mask include elastic sealing strips. This ensures a tight fit when the mask closes the front opening of the hood.

In one embodiment, optionally, the edges of the mask include elastic hook and loop fasteners. This ensures a tight fit when the mask closes the front opening of the hood.

In one embodiment, optionally, the edge of the front opening of the hood is provided with an opening frame. In this way, it may be facilitated for the mask to seal the front opening.

In one embodiment, optionally, the neck cuff assembly is at least partially flexible. In this way, not only can the lower opening be tightened more effectively, but also damage to the user's neck can be avoided.

In one embodiment, optionally, the neck cuff assembly includes: an annular cuff (or collar) at least partially surrounding the user's neck.

In one embodiment, optionally, the neck cuff assembly includes locking means. In this way, the lower opening of the headgear can be locked in a suitable tightened state.

In one embodiment, optionally, the locking device of the neck cuff assembly includes a locking strap.

In one embodiment, the collar is optionally made of a flexible high-elastic material to provide better comfort for the user's neck while ensuring that the opening under the headgear is sealed (eg, ensuring that the collar and neck are in close contact) .

In one embodiment, optionally, the collar assembly includes a high elastic flexible collar and a locking strap.

In one embodiment, optionally, the thickness of the collar is greater than 10 mm. This ensures user comfort.

In one embodiment, optionally, the width of the collar is greater than 40 mm. This ensures tightness and better user comfort.

In one embodiment, optionally, the collar can be lengthened or shortened by one size in a predetermined step length to suit the neck size of different people.

In one embodiment, the collar optionally has a folded or telescoping portion so that it can be extended or shortened by one (or more) size in predetermined step lengths to suit the neck size of different people.

In one embodiment, optionally, in order to improve the comfort, a buffer material layer, such as velvet cloth, may be provided on the inner surface of the collar in contact with the skin of the user's neck, so as to further improve the user's comfort.

In one embodiment, the collar assembly optionally includes: a collar (annulus) located inside the hood around the user's neck; and a locking device (eg, a locking strap) located along the collar located outside the hood ). In this way, the collar and the locking device grip the lower portion of the hood (ie, the portion with the lower opening) from inside and outside, respectively. On the one hand, there is a reliable seal between the collar and the user's neck (especially under the indirect action of the locking force of the locking device), and on the other hand between the collar and the lower part of the hood (especially in the locking device) Under the direct action of the locking force), a relatively safe sealed space is formed in the hood.

In another embodiment, optionally, the neck cover assembly includes: a neck collar (annulus) located outside the hood and surrounding the user's neck and the hem of the hood; and a locking device (annular) provided outside the hood along the neck collar ( such as locking straps). In this way, the collar and locking device cooperate to tighten the hem of the hood (ie, the portion with the lower opening) to seal the lower hood opening. Under the action of the locking force of the locking device, the user's neck, the hem portion of the hood, and the collar and the locking device are pressed together to effectively seal the lower opening of the hood, thereby forming a relatively safe seal inside the hood space. Among them, the collar has elasticity and plays the role of elastic adaptation and auxiliary sealing.

In one embodiment, optionally, the collar and the locking device are formed as a unitary structure.

In one embodiment, optionally, an elastic buffer layer is provided on the inner surface of the hem of the head cover. In this way, it can further play the role of elastic adaptation (especially to protect the user's neck from pressure or friction injury) and auxiliary sealing.

In one embodiment, optionally, the locking means comprises Velcro. In this way, it may be facilitated to adjust the length of the locking device (eg, locking strap) when it is most needed.

In one embodiment, optionally, the edge of the lower opening of the hood includes a flexible hook and loop (or Velcro). In this way, the lower opening portion of the hood can be adhered to the clothing portion below the user's neck by means of a hook-and-loop fastener, so as to avoid loss of sealing due to accidental floating of the hem of the hood.

In one embodiment, optionally, the edge of the lower opening of the hood includes a metal weight. In this way, it is possible to avoid a loss of sealing due to accidental lifting of the hem of the hood.

In one embodiment, the air filter device is optionally mounted to the neck cuff assembly.

In one embodiment, the air filter device is optionally mounted on the upper bracket.

In one embodiment, the air filter device optionally includes a failure alarm.

In one embodiment, optionally, the diameter of the air guide tube leading into the air guide hood is more than 10 mm, so as to ensure smooth breathing.

FIG. 1 is a schematic structural diagram of a protective head cover according to an embodiment of the present invention (wherein the air guide assembly is omitted for clarity).

FIG. 2 is a schematic structural diagram of an air guide of a protective headgear according to an embodiment of the present invention.

In the embodiment shown in Figures 1 and 2 can be seen a protective headgear comprising:

a flexible headgear 1 having a lower opening around the neck of the user (a headgear hem 1a provided with the lower opening is illustrated in FIG. 1 );

A mask assembly 3 comprising: an upper bracket; and a transparent mask mounted to the upper bracket and closedly disposed on the front portion of the hood;

a neck cover assembly 4 that at least partially surrounds the lower portion of the hood and selectively tightens and loosens the lower opening;

An air filter device 2, comprising: a filter element, an air inlet pipe leading into the hood, and an air outlet pipe leading into the hood, wherein the effective area of the filter element is greater than 250 square centimeters;

The air guide assembly includes: an air guide hood 5 fastened to the user's mouth and nose, and an air guide tube 6 connected from the air filter device to the air guide hood.

The protective headgear provided by the embodiment of the present invention can be well sealed and the breathing is smooth, thereby effectively improving the comfort and safety of the user.

It should be understood that the orientations described herein, such as front, rear, left, right, upper, lower, inner, outer, etc., are all expressions of relative positions, and are used to describe the relative positional relationship between various related components or parts , rather than limiting the protection scope of the present invention.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply a relationship between these entities or operations. There is no such actual relationship or sequence. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, the inclusion of an element by the phrase "comprising a..." does not preclude the presence of additional such elements in the process, method, article or apparatus that includes the element.

In the description of various elements herein, the multiple co-located features linked with "and/or" are meant to include one or more (or one or more) of the co-located features. For example, "a first element and/or a second element" means: one or more of the first element and the second element, ie, only the first element, or only the second element, or the first element and the second element Two elements (both present at the same time).

Each embodiment provided in the present invention can be combined with each other as required, for example, the features in any two, three or more embodiments can be combined with each other to form a new embodiment of the present invention, which is also in the present invention within the scope of protection, unless otherwise stated or technically contradictory and cannot be implemented.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (8)

1. A protective headgear, comprising:

a flexible hood having a lower opening around a neck of a user;

a mask assembly, comprising: an upper bracket; and a transparent mask mounted to the upper bracket and closely disposed on a front portion of the hood;

a neck wrap assembly at least partially surrounding a lower portion of said hood and selectively tightening and loosening said lower opening;

an air filtration device, comprising: the filter element, the air inlet pipe communicated into the head cover and the air outlet pipe communicated into the head cover, wherein the effective area of the filter element is larger than 250 square centimeters;

an air guide assembly, comprising: the air guide hood is buckled at the mouth and the nose of a user, and the air guide pipe is connected into the air guide hood from the air filtering device.

2. The protective hood of claim 1,

the filter element comprises: a filter structure having pores with a diameter of 0.3 microns or less.

3. The protective hood of claim 1,

the air filtration device includes an additional physical filter.

4. The protective hood of claim 1,

the air filtration device includes an additional chemical filter.

5. The protective hood of claim 1,

the inner surface of the face mask includes an anti-fog coating.

6. The protective hood of claim 1 further comprising:

and the active defogging device comprises a defogging pipe which is communicated into the hood.

7. The protective hood of claim 1 further comprising:

an active ventilation system including a ventilation tube that opens into the hood.

8. The protective hood of claim 1,

the edge of the scoop comprises a resilient structure.

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