CN216568490U - Protective mask - Google Patents

Abstract

The utility model discloses a protective mask, which comprises: casing, lid, filter core, ultraviolet ray emission component, support, power. Wherein, the lid detachably sets up the top at the casing. The support sets up between casing and lid, and is provided with the gas pocket of crossing with external intercommunication on the lateral wall of support. The filter element is positioned between the shell and the bracket and used for filtering harmful substances. The ultraviolet light emitting element is arranged in the cover body and used for killing viruses in the cover body. The power supply is arranged in the cover body and used for supplying power to the ultraviolet light emitting element. The utility model can not only reduce the cost, prolong the service life and reduce the waste of resources, but also kill the virus in the gas exhaled by the mask wearer.

Description

Protective mask

Technical Field

The utility model relates to the field of articles for daily use, in particular to a protective mask.

Background

The mask is a common article for filtering air entering the lung, and has a good effect on isolating harmful substances such as polluted air, dust or germs. However, the mask popular today still has many defects, and taking N95 (the filtration efficiency reaches 95% under the detection conditions specified by the standards of the national institute of occupational safety and health) mask circulating on the market as an example, the N95 mask is a disposable mask, and cannot be used repeatedly, which results in waste of resources. Moreover, the N95 mask only has the function of filtering, and can not kill viruses.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a protective mask, which can reduce the cost, prolong the service life, reduce the waste of resources and kill viruses in the exhaled air of a mask wearer, and comprises:

the device comprises a shell, a cover body, a filter element, an ultraviolet light emitting element, a bracket and a power supply;

the cover body is detachably arranged at the top end of the shell;

the bracket is arranged between the shell and the cover body, and the side wall of the bracket is provided with a gas passing hole communicated with the outside;

the filter element is positioned between the shell and the bracket and is used for filtering harmful substances;

the ultraviolet light emitting element is arranged in the cover body and is used for killing viruses in the cover body;

the power supply is arranged in the cover body and used for supplying power to the ultraviolet light emitting element.

Optionally, the protective mask further comprises: an exhalation valve disposed on the stent.

Optionally, the cover body and the filter element are provided with through holes for penetrating through the drinking water pipe, the cover body is provided with an end cover capable of being opened and closed, and the end cover is used for plugging the through holes.

Optionally, an exhalation valve is disposed on the end cap.

Optionally, the exhalation valve comprises: the elastic sheet is arranged in the supporting cylinder in a manner of moving up and down;

one end of the supporting cylinder is fixed at the bottom end of the cover body, the end face of the other end of the supporting cylinder is provided with a breathing hole, and the side wall of the supporting cylinder is provided with a plurality of ventilation holes;

the elastic piece is used for plugging or opening the breathing hole.

Optionally, the exhalation valve comprises: a support cylinder, an elastic sheet and an air valve sheet;

the supporting cylinder is arranged at the bottom end of the cover body, a supporting plate is arranged in the supporting cylinder, and a plurality of breathing holes are formed in the supporting plate;

a plurality of air vent holes are formed in the side wall of the supporting cylinder above the supporting plate;

the air valve plate is arranged on the supporting plate and used for plugging or opening the breathing hole;

the elastic piece is arranged between the air valve piece and the cover body, and two ends of the elastic piece are respectively abutted against the top end of the air valve piece and the bottom end of the cover body.

Optionally, the exhalation valve comprises: the elastic sheet and the support frame;

the support frame is arranged between the shell and the cover body, and the side wall of the support frame is provided with a ventilation hole;

one end of the elastic sheet is fixed at the top end of the ventilating hole, and the other end of the elastic sheet can be pressed against the bottom end of the ventilating hole in an openable manner.

Optionally, the surface of the filter element and the inner surface of the housing are coated with nano-sized titanium dioxide particles.

Optionally, the protective mask further comprises: the circuit board, the radiator, the electrode plate and the electrode bracket;

the circuit board is electrically connected with the ultraviolet light emitting element and is used for controlling the charging operation of the power supply and the luminous intensity of the ultraviolet light emitting element and outputting voltage for generating static electricity to the radiator and the electrode plate;

the power supply and the circuit board are arranged in the radiator, and the opposite-surface electrodes of the radiator and the electrode plate are opposite in polarity;

the electrode bracket is arranged in the cover body below the radiator and used for supporting the electrode plate.

Optionally, reflective films are arranged on the inner walls of the shell and the cover body.

In the embodiment of the utility model, the shell, the cover body, the filter element and the support are arranged, the cover body is detachably arranged at the top end of the shell, the support is arranged between the shell and the cover body, and the filter element is positioned between the shell and the support, so that the filter element can be replaced at any time, the cost is reduced, the service life of the protective mask is prolonged, and the waste of resources is reduced. Through set up ultraviolet ray emission component in the lid to be provided with the gas passing hole with external intercommunication on the lateral wall of support, guaranteed that the gas that gauze mask wearer exhaled still can carry out virus killing through ultraviolet ray emission component after the filter core filters, the rethread gas hole is discharged to the external world. Through setting up the power, realized the power supply to ultraviolet ray emission element, guaranteed the normal work of ultraviolet ray emission element.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:

FIG. 1 is an exploded view of a protective mask in accordance with an embodiment of the present invention;

FIG. 2 is a schematic diagram of a first exemplary configuration of an exhalation valve in an embodiment of the utility model;

FIG. 3 is a schematic diagram of a second exemplary configuration of an exhalation valve in an embodiment of the utility model;

FIG. 4 is a schematic diagram of a third exemplary configuration of an exhalation valve in an embodiment of the utility model;

FIG. 5 is a schematic structural view of a stent according to an embodiment of the present invention;

FIG. 6 is a top view of a cover in an embodiment of the present invention;

FIG. 7 is a schematic structural view of an end cap according to an embodiment of the present invention;

fig. 8 is a partial schematic view of a protective mask in accordance with an embodiment of the present invention.

The reference numbers are as follows:

1, a shell body is arranged in the shell body,

2, a cover body is arranged on the upper portion of the box body,

201 an end cap is provided with a cover,

3, a filter element is arranged in the filter element,

4 an ultraviolet light-emitting element, which is,

5, a bracket is arranged on the upper surface of the bracket,

501 a gas passing hole is formed in the upper surface of the shell,

6 a power supply is arranged on the base plate,

7 an air-breathing valve is arranged on the air-breathing valve,

701 the support cylinder is used for supporting the cylinder,

7011 it has a respiratory orifice (7011),

7012 the air-vent hole is provided with air-vent holes,

702 an elastic sheet having a plurality of elastic elements,

703 that the air valve plate is arranged on the air valve plate,

704 a support frame is arranged on the base plate,

8 a circuit board, wherein the circuit board is provided with a plurality of printed circuit boards,

9 a heat sink, which is provided with a heat sink,

a base 901 of the device is provided with a base,

10 of the electrode plates are arranged in a vertical direction,

11 a sealing support for the body of the container,

12 of the switch-on and switch-off of the switch,

13 USB interface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

In the description of the present specification, the terms "comprising," "including," "having," "containing," and the like are used in an open-ended fashion, i.e., to mean including, but not limited to. Reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is for illustrative purposes to illustrate the implementation of the present application, and the sequence of steps is not limited and can be adjusted as needed.

An embodiment of the present invention provides a protective mask, as shown in fig. 1 and 8, including: the device comprises a shell 1, a cover body 2, a filter element 3, an ultraviolet light emitting element 4, a bracket 5 and a power supply 6. Wherein, the cover body 2 is detachably arranged at the top end of the shell body 1. The bracket 5 is arranged between the shell 1 and the cover 2, and the side wall of the bracket 5 is provided with an air passing hole 501 communicated with the outside. The filter element 3 is located between the housing 1 and the bracket 5 for filtering harmful substances. The ultraviolet light emitting element 4 is provided in the lid body 2 for sterilizing viruses in the lid body 2. A power supply 6 is provided in the cover body 2 for supplying power to the ultraviolet light emitting element 4. Wherein, the harmful substances refer to polluted air, dust, germs, viruses, harmful gases and the like. When organic pollutants pass through an ultraviolet irradiation area, ultraviolet rays penetrate cell membranes and cell nuclei of organisms, are absorbed by base pairs of DNA or RNA, and undergo photochemical action, so that genetic materials of the cells are changed, and therefore, the activity of the genetic materials of the cells is lost, and microorganisms cannot reproduce or die soon.

In use, the case 1 is worn on the head of a mask wearer so as to face the mouth of the mask wearer. In the process, the filter element 3 can filter harmful substances inhaled and exhaled by a mask wearer in real time, the power supply 6 supplies power to the ultraviolet light emitting element 4 in real time, and the ultraviolet light emitting element 4 kills viruses in the cover body 2 in real time, so that gas after killing treatment is discharged to the outside from the air passing hole 501 in the side wall of the support 5.

When the filter element 3 needs to be replaced, the support 5 in the shell 1 and the cover body 2 is detached, and after the new filter element 3 is replaced, the shell 1 and the support 5 are connected.

The embodiment of the utility model provides a protective mask, which is characterized in that a shell 1, a cover body 2, a filter element 3 and a support 5 are arranged, the cover body 2 is detachably arranged at the top end of the shell 1, the support 5 is arranged between the shell 1 and the cover body 2, and the filter element 3 is arranged between the shell 1 and the support 5, so that the filter element 3 can be replaced at any time, the cost is reduced, the service life of the protective mask is prolonged, and the waste of resources is reduced. Through set up ultraviolet emission element 4 in lid 2 to be provided with the gas hole 501 of crossing with external intercommunication on the lateral wall of support 5, guaranteed that the gas that gauze mask wearer exhaled still can carry out virus killing through ultraviolet emission element 4 after filtering through filter core 3, the rethread gas hole 501 discharges to the external world. Through setting up power 6, realized the power supply to ultraviolet emission component 4, guaranteed the normal work of ultraviolet emission component 4.

The ultraviolet light emitting element 4 may be an ultraviolet lamp.

The shell 1 can be made of nontoxic polyethylene or medical polypropylene material by injection molding or suction/blow molding. It has a thickness of 0.5mm to 5mm (for example, it may be 0.6mm, 0.8mm, etc.). Moreover, in order to ensure that the shell 1 has sufficient strength, a reinforcing rib structure may be arranged on the shell 1, the edge of the shell 1 may be formed by curling or by thickening radian, the edge is turned, and a sealing support 11 may be arranged along the edge of the shell 1, see fig. 1, so as to realize the sealing after the shell 1 is worn on the face, and further, in order to ensure the comfort of the mask wearer, the sealing support 11 may be a silica gel support surface, a silica gel hose, a replaceable medical foam adhesive tape, or the like.

The material of the filter element 3 may be a polypropylene melt-blown material (for example, three to four layers of mask cloth including melt-blown layers may be used) used for manufacturing the medical disposable mask, and the size of the filter element 3 is about 1/3 (the diameter is 5cm to 8cm, for example, the diameter may be 5cm, 6cm, 8cm, etc.) of the medical disposable mask, that is, one medical disposable mask may be cut into 3 filter elements 3, which is seen in that the cost of the protective mask provided by the embodiment of the present invention is low. In addition, the filter screens of the masks commonly used in the market at present are designed for preventing PM2.5 (particles with the particle size of more than 2.5 microns), but the sizes of bacteria and viruses are generally smaller, for example, the diameter of the novel coronavirus is only 0.1 micron, and the masks commonly used in the market cannot play a role in preventing the viruses.

The filter element 3 can be made of different materials and structures (such as non-woven fabric, three-layer melt-blown fabric, activated carbon, etc.) for different operation environments, and for example, the filter element 3 can be made of activated carbon in order to filter ozone existing in the filter element 3 (if the voltage setting is too high during the subsequent electrostatic operation, or the spectrum selection of the ultraviolet light is not proper, for example, the ultraviolet light with a wavelength less than 200nm may generate partial ozone in the cover body 2), and the activated carbon also has the effect of poison prevention and filtration.

The power source 6 may be one or two 3.7V lithium batteries having a battery capacity required to support the maximum current of the ultraviolet light emitting element 4 for continuous operation for more than 4 hours. Further, in order to save resources and reduce cost, the power supply 6 may be configured as a rechargeable power supply.

In order to facilitate the adjustment of the tightness of the shell 1 on the face of a mask wearer and improve the comfort of the mask wearer, a lace with adjustable tightness and adjustable size can be arranged on the shell 1.

In order to facilitate breathing of the mask wearer, a circular through hole can be formed at a position of 0.5cm-1.5cm (such as 0.7cm, 1cm, 1.3cm and the like) of the shell 1, which is opposite to the center of the mouth of the mask wearer, and the diameter of the circular through hole can be 50mm-70mm (such as 55mm, 60mm, 65mm and the like).

Further, in order to realize the rapid mounting or dismounting of the mask shell 1 and the cover 2, the shell 1 and the cover 2 may be screwed, specifically, a cylindrical protrusion with an external thread may be disposed on the circular through hole along the circumferential direction, and an internal thread adapted to the external thread may be disposed on the cover 2.

In order to facilitate the normal operation of the ultraviolet light emitting element 4 when the housing 1 and the cover 2 are screwed together, when the housing 1 and the cover 2 are separated, the ultraviolet light emitting element 4 is turned off, and a thimble switch may be provided at a position where the housing 1 and the cover 2 contact each other.

Further, in order to block the ultraviolet light emitted from the ultraviolet light emitting element 4 and prevent the ultraviolet light from damaging the human body, the surface of the filter element 3 and the inner surface of the housing 1 may be coated with nano-scale titanium dioxide particles. Moreover, the inner walls of the shell 1 and the cover body 2 can be provided with reflective films, so that ultraviolet light can be fully irradiated on the filter element 3, and meanwhile, the ultraviolet light is prevented from leaking to cause damage to a human body. In order to further kill viruses and bacteria, the reflective film can be plated with silver or nano-silver. In order to further improve the blocking effect against ultraviolet rays, it is also possible to prepare the upper case 202 and the lower case 203 to which 2% of carbon black is added.

In order to improve the smoothness of breathing of the mask wearer, as shown in fig. 1, 5 and 8, the protective mask further comprises: an exhalation valve 7. The exhalation valve 7 is arranged on the support 5. So, when improving the respiratory smooth and easy nature of gauze mask person of wearing, can also guarantee that protective mask's whole is more pleasing to the eye.

As an example of the present invention, as shown in fig. 6 and 7, a through hole for passing through a drinking water pipe may be provided on the cover body 2 and the filter element 3, and an openable end cap 201 may be provided on the cover body 2, the end cap 201 being used for blocking the through hole.

When the mask wearer wants to drink water, open end cover 201 on the lid 2, place the one end of drinking water pipe in the drinking cup, the other end passes through the through-hole on lid 2 and the filter core 3 after in the mouth of mask wearer, treat the mask wearer after drinking water, on covering end cover 201 on the through-hole X on respiratory mechanism 2 to can with this through-hole X shutoff. In the present application, the fluid inhaled by the mask wearer through the drinking water pipe may include not only water but also porridge, coffee, milk, etc., as long as the fluid can be inhaled by the mask wearer through the drinking water pipe.

Through the arrangement, when a user wearing the mask needs to drink water, the user can drink water at any place including special places such as hospitals and earthquake relief work at any time, and the mask is very convenient to drink water.

The diameter of the through hole can be 10mm-14mm, for example, the diameter can be 10mm, 12mm, 14mm, etc. In order to open and close the cover 2 and the end cap 201, the cover 2 and the end cap 201 may be connected by a hinge.

The filter element 3 in this embodiment is a circular structure matching with the inner diameter of the housing 1, and the inner diameter thereof is generally 5cm to 7cm (e.g., 5.5cm, 6cm, 6.5cm, etc.), and is subjected to edge sealing treatment. A circular through hole for passing through the drinking water pipe is arranged at a position which deviates from the central point of the circular structure by about 1 cm.

Further, to ensure the smooth breathing of the wearer of the exemplary lower mask of the present invention, an exhalation valve 7 may be provided on end cap 201.

It should be noted that, in the embodiment of the present invention, if the exhalation valve 7 is provided on the support 5, the through hole for passing through the drinking water tube and the exhalation valve 7 on the end cap 201 on the cover body 2 may not be provided. In contrast, if the through-hole for passing through the drinking water tube is provided in the lid body 2 and the exhalation valve 7 is provided in the end cap 201, the exhalation valve 7 may not be provided in the holder 5.

There are various possible configurations for the expiratory valve 7, for example:

as a first example, as shown in fig. 2, the expiratory valve 7 comprises: a support cylinder 701 and an elastic piece 702 which is arranged in the support cylinder 701 and can move up and down. One end of the supporting cylinder 701 is fixed at the bottom end of the cover body 2, a breathing hole 7011 is formed in the end face of the other end of the supporting cylinder 701, and a plurality of ventilating holes 7012 are formed in the side wall of the supporting cylinder 701; the elastic piece 702 is used to occlude or open the breathing orifice 7011.

During the application, the gas that gauze mask wearer expired can arrange to support in the section of thick bamboo 701 after filtering through filter core 3, and then with the interior flexure strip 702 jack-up of a support section of thick bamboo 701 to with the respiratory 7011 separation, open respiratory 7011 promptly, with gaseous exhaust. When the user inhales, the elastic piece 702 rebounds under the elastic action thereof to block the breathing hole 7011, so that the external air is prevented from entering the human body through the supporting cylinder 701.

In this example, the elastic sheet 702 may be a silicone sheet. The supporting cylinder 701 may be a hollow tubular structure such as a circular or square structure, one end of which is fixed on the inner wall of the cover 2, and the other end of which is provided with an end face on which a plurality of breathing holes 7011 are arranged. In the support cylinder 701, the pipe diameter below the elastic piece 702 may be set smaller than the pipe diameter above the elastic piece 702.

As a second example, as shown in fig. 3, the expiratory valve 7 comprises: a support cylinder 701, an elastic sheet 702 and an air valve sheet 703. Wherein, the supporting cylinder 701 is arranged at the bottom end of the cover body 2, a supporting plate 7013 is arranged in the supporting cylinder 701, and a plurality of breathing holes 7011 are arranged on the supporting plate 7013. A plurality of ventilation holes 7012 are arranged on the side wall of the supporting cylinder 701 above the supporting plate 7013. The air valve plate 703 is arranged on the support plate 7013 and used for plugging or opening the breathing hole 7011. The elastic piece 702 is disposed between the air valve plate 703 and the cover body 2, and two ends of the elastic piece respectively abut against the top end of the air valve plate 703 and the bottom end of the cover body 2.

During the application, the gaseous process filter core 3 of gauze mask wearer's exhalation can be arranged to support section of thick bamboo 701 in, and then upwards blow up the air valve piece 703 in supporting section of thick bamboo 701, and compression flexure strip 702 makes a plurality of respiration holes 7011 separation on air valve piece 703 and the backup pad 7013, opens respiration hole 7011 promptly, discharges gas. When the air is inhaled, the elastic piece 702 rebounds under the elastic action of the elastic piece to push the air valve piece 703 to move downwards to block the breathing hole 7011, so that the external air is prevented from entering the human body through the supporting cylinder 701.

In this example, the elastic sheet 702 may be a silicone sheet, and the shape thereof may be set to be a bell shape, see fig. 3 in particular. The air valve plate 703 may be a plastic plate. The supporting cylinder 701 may be a hollow tubular structure such as a circular or square structure, one end of which is fixed on the inner wall of the cover 1, and the other end of which is provided with an end face on which a plurality of breathing holes 7011 are arranged. In the support cylinder 701, the pipe diameter below the elastic sheet 702 may be set smaller than the pipe diameter above the elastic sheet 702.

As a third example, as shown in fig. 4, the expiratory valve 7 comprises: a flexible sheet 702 and a support frame 704. Wherein, the supporting frame 704 is arranged between the shell 1 and the cover 2, and the side wall is provided with a ventilation hole 7012. One end of the elastic piece 702 is fixed to the top end of the ventilating hole 7012, and the other end thereof is openably abutted against the bottom end of the ventilating hole 7012.

During the application, the gas that gauze mask wearer's exhaling can be arranged to support frame 704 after filtering through filter core 3, and then blows up the elastic sheet 702 that is used for shutoff scavenge port 7012 on the support frame 704 lateral wall, opens scavenge port 7012 promptly, discharges gas. Because one end of the elastic piece 702 is fixed on the top end of the ventilation hole 7012 and the other end is pressed against the bottom end of the ventilation hole 7012 in an openable and closable manner, when a mask wearer inhales, the end of the elastic piece 702 pressed against the bottom end of the ventilation hole 7012 closes the ventilation hole 7012 under the action of gravity, namely, the ventilation hole 7012 is blocked, and external air is prevented from entering a human body through the supporting cylinder 701.

In this example, the elastic piece 702 may be a silicon sheet, and in order to increase the gravity of its lower portion, the width of its lower portion may be made larger than the width of its upper portion, see fig. 4.

As still another example of the present invention, as shown in fig. 1, the protective mask further includes: circuit board 8, radiator 9, electrode plate 10, electrode support. Among them, the circuit board 8 is electrically connected to the ultraviolet light emitting element 4 for controlling the charging operation of the power source 6 and the luminous intensity of the ultraviolet light emitting element 4, and outputs a voltage for generating static electricity to the heat sink 9 and the electrode plate 10. The power supply 6 and the circuit board 8 are disposed in the heat sink 9, and the opposing-face electrodes of the heat sink 9 and the electrode plate 10 are opposite in polarity. An electrode holder is provided in the lid body 2 below the heat sink 9 for supporting the electrode plate 10.

When the protective mask is worn by a mask wearer, the circuit board 8 is utilized to output voltage for generating static electricity to the radiator 9 and the electrode plate 10, aerosol and particles in the air can be further filtered, and the protective effect of the protective mask is improved. In addition, in the embodiment, by adding electrostatic filtration, the requirement on the melt-blown layer in the filter element 3 can be reduced, the problem that the static electricity of the melt-blown layer is reduced along with the time and the use condition is solved, the melt-blown layer of the filter element 3 can be even replaced, the use of the melt-blown layer of the filter element is reduced, and the filter element 3 does not need to be replaced for a long time. By providing the heat sink 9, heat radiated from the ultraviolet light emitting element 4 and the power supply 6 between the case 1 and the lid body 2 can be dissipated so as not to damage the human body.

The electrode plate 10 may be a metal mesh or a plastic mesh.

When the electrode plate is applied, an insulating layer can be arranged on the lower surface of the electrode plate 10 and the upper surface of the heat radiator 9, so that the human body is prevented from being damaged by static electricity. In addition, conductive layers with opposite electrode polarities may be disposed on the upper surface of the electrode plate 10 and the lower surface of the heat sink 9, for example, a negative electrode conductive layer may be disposed on the upper surface of the electrode plate 10, and a positive electrode conductive layer may be disposed on the lower surface of the heat sink 9; a positive electrode conductive layer may be provided on the upper surface of the electrode plate 10, and a negative electrode conductive layer may be provided on the lower surface of the heat sink 9.

Taking the example of providing a negative electrode conductive layer on the upper surface of electrode plate 10 and a positive electrode conductive layer on the lower surface of heat sink 9, a plurality of tip structures may be provided on the lower surface of heat sink 9.

Through setting up sharp point structure, can utilize the point of sharp point structure to discharge, and then with near air ionization and produce the anion, further kill the virus. The tip structure may have various structures, for example, it may have a conical structure, a triangular cone structure, a needle tip structure, etc.

At this time, by adjusting the electrostatic voltage, not only the electrostatic adsorption action but also negative oxygen ions can be generated to kill viruses and bacteria.

Wherein, the circuit board 8 includes: a constant current source, a charging Circuit, a boosting Circuit, a high voltage protection Circuit, a pcb (printed Circuit board) Circuit, a USB interface 13, etc., see fig. 8, for controlling the charging operation of the power supply 6 and the luminous intensity of the ultraviolet light emitting element 4. Wherein, the USB interface can be Mini USB, and is arranged on the outer surface of the radiator 9 to ensure the convenient installation. The booster circuit and the high-voltage protection circuit may be formed by a small-sized magnetic core transformer or an electronic inverter plus a protection circuit. When the device is used, the booster circuit generates more than 1000V of static voltage, and the static voltage is output through the positive and negative high-voltage insulated wires. The high-voltage positive electrode is connected to a positive electrode face out of the opposing faces of the heat sink 9 and the electrode plate 10, and the high-voltage negative electrode is connected to a negative electrode face out of the opposing faces of the heat sink 9 and the electrode plate 10.

The heat sink 9 is provided with a base 901 for placing an ultraviolet lamp circuit board, see fig. 1, on which the ultraviolet lamp is disposed to ensure heat dissipation of the ultraviolet lamp. Wherein, this ultraviolet lamp circuit board can include: when the ultraviolet lamp is applied, the optimal cost-effectiveness ratio (disinfection effect and one-time charging use time) can be achieved by adjusting the spectrum (the best virus inactivation effect is achieved by ultraviolet light of 250-270 nm), the light intensity and the irradiation time (direct current or periodic illumination) of the ultraviolet lamp.

In addition, in this example, the protective mask further includes: a switch 12 electrically connected to the circuit board 8, see fig. 8. The switch 12 is used to control the switching of the power supply 6 and the luminous intensity of the ultraviolet light emitting element 4 through the circuit board 8. In specific implementation, the switch 12 may be composed of two-position or three-position toggle switches, and the two-position switch gears are on and off respectively; the three-position toggle switch is respectively in an off state, a first gear and a second gear, corresponds to the off state, the low current state and the high current state of the ultraviolet lamp 204, and has a large-current ratio of 2-3.

This protective facial mask still includes: a contact switch. The contact switch is arranged in the radiator 9, the contact extends out of the edge of the radiator 9, when the cover body 2 is arranged on the shell body 1, the contact is pressed on the inner side of the shell body 1, the contact switch is connected with the power supply of the ultraviolet light emitting element 4, and the ultraviolet light emitting element 4 works; when the cover 2 is removed from the case 1, the contact release springs up, the power supply to the ultraviolet light emitting element 4 is cut off, and the ultraviolet light emitting element 4 does not operate.

In addition, the electrode holder is provided with a vent hole, a dark breathable material part can be arranged on the surface of the electrode holder so as to further block ultraviolet light from leaking, and the edge of the cover body 2 can be arranged to incline towards the surface of the shell body 1 so as to block the leaked ultraviolet light.

In summary, according to the protective mask provided by the embodiment of the utility model, the shell 1, the cover 2, the filter element 3 and the bracket 5 are arranged, the cover 2 is detachably arranged at the top end of the shell 1, the bracket 5 is arranged between the shell 1 and the cover 2, and the filter element 3 is arranged between the shell 1 and the bracket 5, so that the filter element 3 can be replaced at any time, the cost is reduced, the service life of the protective mask is prolonged, and the waste of resources is reduced. Through set up ultraviolet emission element 4 in lid 2 to be provided with the gas hole 501 of crossing with external intercommunication on the lateral wall of support 5, guaranteed that the gas that gauze mask wearer exhaled still can carry out virus killing through ultraviolet emission element 4 after filtering through filter core 3, the rethread gas hole 501 discharges to the external world. Through setting up power 6, realized the power supply to ultraviolet ray emission element 4, guaranteed the normal work of ultraviolet ray emission element 4.

In addition, this application can realize disinfecting the two-way of the gas of breathing in and exhaling, disinfects through using the ultraviolet ray, can prolong the life of filter core 3. Through using high-voltage static electricity, can adsorb particulate matter, bacterium and virus etc. have further strengthened the effect of filtering dustproof and separation bacterium virus. By setting the power source 205 as a rechargeable power source, the overall service life of the protective mask is prolonged. Through being provided with the through-hole that is used for passing the drinking water pipe on lid 2, and be provided with on lid 2 and the filter core 3 and open and shut ground end cover 201, guaranteed that the gauze mask person of wearing can drink water at any time in the optional place including special places such as hospital, antidetonation relief work when needing to drink water, it is very convenient to drink water

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A protective mask, comprising: the device comprises a shell (1), a cover body (2), a filter element (3), an ultraviolet light emitting element (4), a bracket (5) and a power supply (6);

the cover body (2) is detachably arranged at the top end of the shell (1);

the support (5) is arranged between the shell (1) and the cover body (2), and the side wall of the support (5) is provided with an air passing hole (501) communicated with the outside;

the filter element (3) is positioned between the shell (1) and the bracket (5) and is used for filtering harmful substances;

the ultraviolet light emitting element (4) is arranged in the cover body (2) and is used for killing viruses in the cover body (2);

the power supply (6) is arranged in the cover body (2) and used for supplying power to the ultraviolet light emitting element (4).

2. The protective mask of claim 1 further comprising: an exhalation valve (7) arranged on the support (5).

3. The protective mask according to claim 1, wherein the cover (2) and the filter element (3) are provided with through holes for passing through drinking water pipes, and the cover (2) is provided with an openable end cap (201), and the end cap (201) is used for plugging the through holes.

4. Protective mask according to claim 3, characterized in that the end cap (201) is provided with an exhalation valve (7).

5. Protective mask according to claim 2 or 4, characterized in that the exhalation valve (7) comprises: a support cylinder (701), an elastic sheet (702) which is arranged in the support cylinder (701) in a manner of moving up and down;

one end of the supporting cylinder (701) is fixed at the bottom end of the cover body (2), a breathing hole (7011) is formed in the end face of the other end of the supporting cylinder, and a plurality of ventilating holes (7012) are formed in the side wall of the supporting cylinder (701);

the elastic piece (702) is used for plugging or opening the breathing hole (7011).

6. Protective mask according to claim 2 or 4, characterized in that the exhalation valve (7) comprises: the device comprises a support cylinder (701), an elastic sheet (702) and an air valve sheet (703);

the supporting cylinder (701) is arranged at the bottom end of the cover body (2), a supporting plate (7013) is arranged in the supporting cylinder (701), and a plurality of breathing holes (7011) are formed in the supporting plate (7013);

a plurality of ventilation holes (7012) are formed in the side wall of the supporting cylinder (701) above the supporting plate (7013);

the air valve plate (703) is arranged on the supporting plate (7013) and is used for plugging or opening the breathing hole (7011);

the elastic piece (702) is arranged between the air valve plate (703) and the cover body (2), and two ends of the elastic piece respectively prop against the top end of the air valve plate (703) and the bottom end of the cover body (2).

7. Protective mask according to claim 2 or 4, characterized in that the exhalation valve (7) comprises: an elastic sheet (702) and a support frame (704);

the support frame (704) is arranged between the shell (1) and the cover body (2), and the side wall of the support frame is provided with a ventilation hole (7012);

one end of the elastic sheet (702) is fixed at the top end of the ventilating hole (7012), and the other end of the elastic sheet can be pressed against the bottom end of the ventilating hole (7012) in an openable manner.

8. Protective mask according to claim 1, characterized in that the surface of the filter element (3) and the inner surface of the shell (1) are coated with nano-sized titanium dioxide particles.

9. The protective mask of claim 1 further comprising: the circuit board (8), the radiator (9), the electrode plate (10) and the electrode bracket;

the circuit board (8) is electrically connected with the ultraviolet light emitting element (4) and is used for controlling the charging operation of the power supply (6) and the luminous intensity of the ultraviolet light emitting element (4) and outputting voltage for generating static electricity to the heat radiator (9) and the electrode plate (10);

the power supply (6) and the circuit board (8) are arranged in the heat radiator (9), and the opposite-face electrodes of the heat radiator (9) and the electrode plate (10) are opposite in polarity;

the electrode bracket is arranged in the cover body (2) below the radiator (9) and used for supporting the electrode plate (10).

10. Protective mask according to claim 1, characterized in that reflective films are provided on the inner walls of the shell (1) and the cover (2).

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