WO2016052992A1

WO2016052992A1 - Multifunctional mask

Info

Publication number: WO2016052992A1
Application number: PCT/KR2015/010310
Authority: WO
Inventors: 왕종문
Original assignee: 왕종문
Priority date: 2014-09-30
Filing date: 2015-09-30
Publication date: 2016-04-07
Also published as: WO2016052791A1; KR101607953B1

Abstract

The present invention relates to a multifunctional mask. The multifunctional mask (100) according to the present invention comprises: an upper mask (110), which is provided with a protective lens (113) for covering the eyes of a wearer and securing the wearer's visual field and has inlet holes (115) formed in one side thereof; and a lower mask (120), which is detachably coupled to the upper mask (110), covers the wearer's nose or mouth, and has a first check valve (123) communicating with the upper mask (110) and a second check valve (125) communicating with the outside, wherein: the first check valve (123) allows the passage of gases only in the direction from the upper mask (110) to the lower mask (120); the second check valve (125) allows the passage of gases only in the direction from the lower mask (120) to the outside; the gases, which have flowed into the upper mask (110) via the inlet holes (115), are transferred to the lower mask (120) via the first check valve (123) and then inhaled through the wearer's nose or mouth; and the gases exhaled through the wearer's nose or mouth are discharged to the outside via the second check valve (125).

Description

Multifunction mask

The present invention relates to a multifunctional mask.

Rapid industrial development has resulted in a complicated industrial structure and an increase in the size and number of operators, which have resulted in the use or handling of various hazardous substances. These harmful substances are a major detrimental factor to workers' health, and dust masks or gas masks have been developed as a means of controlling them.

Here, a dust mask or a gas mask (hereinafter, a mask) is usually divided into a face part and a purifier, and a purifier is provided with a filter to purify the air. In particular, the mask is produced in a variety of forms, such as a small mask covering only the nose and mouth, and a full face mask covering the entire face. Such a mask should allow the wearer to have sufficient visibility so as not to disturb the work, and the longer the replacement cycle of the canister, the better the cost reduction.

However, the mask according to the prior art, as disclosed in the patent document of the prior art document, is provided with a large volume purifying container on one side or both sides of the portion where the wearer's mouth is located. Thus, there is a problem that the purifier of the mask narrows the wearer's field of view, thereby obstructing work. In addition, since the purifying container is located in front of the mask, fine substances such as dust generated as the work is directly absorbed into the purifying container. As a result, the mask according to the prior art has a problem that the replacement cycle of the trash can is shortened, and thus the replacement cost is excessively consumed. On the other hand, in the mask according to the prior art, the moisture is generated in the lens due to the temperature difference between the inside of the lens and the outside of the lens, there is a problem that there is no means for removing the moisture of the lens. In addition, the mask according to the prior art has a problem that can not cope with the size of the wearer's nose or mouth size is fixed size.

(Patent Document 1) KR2008-0113383 A

The present invention is to solve the above-mentioned problems of the prior art, one aspect of the present invention is to prevent the occurrence of moisture in the protective lens by introducing a new gas into the upper mask each time the wearer inhales the gas (air). To provide a multifunctional mask that can be.

In addition, another aspect of the present invention is to provide a multi-function mask that can be configured to replace the lower mask to correspond to the shape or size of the wearer's nose.

In addition, another aspect of the present invention is to provide a multi-function mask that can widen the wearer's field of view by placing the filter unit on the upper end of the upper mask and the like to minimize the absorption of fine material into the filter unit.

Multifunctional mask according to an embodiment of the present invention is provided with a protective lens to cover the eye of the wearer and to secure the field of view, the upper mask having a suction hole formed on one side, and is detachably coupled to the upper mask, nose of the wearer Or a lower mask covering the mouth and having a first check valve in communication with the upper mask, and a second check valve in communication with the outside, wherein the first check valve has a gas in the direction of the lower mask from the upper mask. Only pass through the second check valve, the gas can pass only from the lower mask to the outside direction, the gas introduced into the upper mask through the suction hole is transferred to the lower mask through the first check valve , The gas sucked into the wearer's nose or mouth, the gas discharged from the wearer's nose or mouth through the second check valve Discharged to the negative.

In addition, in the multi-function mask according to an embodiment of the present invention, the suction hole is formed at the top or side end of the upper mask.

In addition, in the multifunction mask according to an embodiment of the present invention, the lower mask is a nose mask for narrowing the width between both sides toward the upper side to cover the wearer's nose.

Further, in the multifunction mask according to the embodiment of the present invention, the first check valve is formed on the side of the nose mask, the second check valve is formed on the lower surface of the nose mask.

In addition, in the multi-function mask according to an embodiment of the present invention, the center is coupled to the lower side of the nose mask, both ends are formed of a tube extending from the center in both side directions of the upper mask, the second check valve It further includes an induction pipe for guiding the gas discharged to the outside through both sides of the upper mask.

In addition, in the multi-function mask according to an embodiment of the present invention, the lower mask is provided in the nose mask for narrowing the width between both sides toward the upper side to cover the nose of the wearer, and the lower side of the nose mask And an acquisition mask formed to cover the wearer's mouth.

In addition, in the multifunction mask according to the embodiment of the present invention, the first check valve is formed on the side of the nose mask, the second check valve is formed on the front surface of the acquisition mask.

In addition, in the multi-function mask according to an embodiment of the present invention, provided on the upper end of the upper mask, purifying the gas, and further comprises a filter for supplying the purified gas to the upper mask through the suction hole.

In addition, in the multi-function mask according to an embodiment of the present invention, it is further coupled to the upper mask and the lower mask, and further comprises a hood covering the head of the wearer.

In addition, in the multi-function mask according to an embodiment of the present invention, the protective lens is formed with a depression recessed from the lower center to the upper side, the upper mask to support the edge of the protective lens, but to correspond to the depression A first frame protruding from the protective lens in the lower center of the protective lens, the first frame protruding from the protective lens toward the wearer, and a second frame extending from the first frame to support the edge of the depression; The lower mask is detachably coupled to the first frame and the second frame.

In addition, in the multi-function mask according to an embodiment of the present invention, the lower mask is coupled to the first frame and the second frame to be detachable by an adhesive component.

In addition, in the multi-function mask according to an embodiment of the present invention, the first groove portion extending from the wearer toward the protective lens is formed on the side of the first frame exposed by the opening portion, the lower side of both sides of the lower mask The first protrusion protruding to be inserted along the first groove portion is formed, a second groove portion extending along an edge is formed at the front end of the lower mask, and the second frame protrudes to correspond to the second groove portion. The second protrusion is formed.

In addition, in the multifunction mask according to an embodiment of the present invention, the first fastening groove is formed in the first groove portion, the first fastening protrusion is formed to protrude to correspond to the first fastening groove in the first protrusion. do.

In addition, in the multi-function mask according to an embodiment of the present invention, a second groove portion extending along an edge is formed at the front end of the lower mask, the second protrusion protruding to correspond to the second groove portion in the second frame It is formed, the second fastening groove is formed in the side of the first frame exposed by the opening is formed, the second fastening protrusion protruding to correspond to the second fastening groove is formed on the lower end of both sides of the lower mask. .

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best describe their own invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

According to the present invention, each time the wearer inhales the gas (air), a new gas is introduced into the upper mask, there is an advantage that can prevent the moisture generated in the protective lens.

In addition, according to the present invention, there is an advantage that can be configured to replace the lower mask to correspond to the shape or size of the wearer's nose.

In addition, according to the present invention, by arranging the filter unit on the upper end of the upper mask or the like, it is possible to widen the wearer's field of view and reduce the absorption of the fine material to the filter unit to the maximum.

1 to 2 is an exploded perspective view of a multifunctional mask according to an embodiment of the present invention,

3 is a perspective view of the multifunction mask in accordance with an embodiment of the present invention;

4 is a perspective view of a filter unit added to a multifunctional mask according to an embodiment of the present invention;

5a to 5b is a perspective view of the acquisition mask is added to the multifunctional mask according to an embodiment of the present invention,

6 to 7 is a perspective view showing the operation of the multi-function mask according to an embodiment of the present invention,

8 is a front view of the induction tube is added to the multi-function mask according to an embodiment of the present invention,

9 is a bottom view showing various forms of a nose mask for a multifunctional mask according to an embodiment of the present invention, and

10 is a perspective view of a hood is added to the multi-function mask in accordance with an embodiment of the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings. In the present specification, in adding reference numerals to the components of each drawing, it should be noted that the same components as possible, even if displayed on different drawings have the same number as possible. In addition, terms such as “first” and “second” are used to distinguish one component from another component, and the component is not limited by the terms. In the following description, detailed descriptions of related well-known techniques that may unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 2 is an exploded perspective view of a multifunctional mask according to an embodiment of the present invention, Figure 3 is a combined perspective view of the multifunctional mask according to an embodiment of the present invention.

As shown in Figures 1 to 3, the multi-function mask 100 according to the present embodiment is provided with a protective lens 113 to cover the eyes of the wearer and to secure a field of view, the suction hole 115 is formed on one side A first check valve 123 coupled to the upper mask 110 and the upper mask 110 to be detachable, covering the wearer's nose or mouth, and communicating with the upper mask 110, and a second communicating with the outside. The check valve 125 is formed with a lower mask 120, the first check valve 123, the gas can pass only in the direction of the lower mask 120 from the upper mask 110, the second check valve ( The gas may pass through the lower mask 120 only in an outward direction, and the gas introduced into the upper mask 110 through the suction hole 115 may pass through the lower checker 120 through the first check valve 123. Gas inhaled into the wearer's nose or mouth and expelled from the wearer's nose or mouth It is discharged to the outside through the check valve (125).

The upper mask 110 serves to protect the wearer's eyes. Here, the upper mask 110 is provided with a protective lens 113 on the front. In this case, the protective lens 113 may cover the eyes of the wearer, but may be formed of a transparent material to secure a field of view. In addition, a suction hole 115 is formed at one side of the upper mask 110. Here, the suction hole 115 may be formed at the upper end and the side end of the upper mask 110. However, the suction hole 115 is not necessarily formed at both the upper end and the side end of the upper mask 110, it may be formed only at any one of the upper end or side end of the upper mask 110. Gas purified from the filter unit 130 or gas outside may be introduced into the upper mask 110 through the suction hole 115. In particular, when the air is sucked into the wearer's nose or mouth, the air is introduced into the upper mask 110 through the suction hole 115, thereby preventing the moisture generated in the protective lens 113, Detailed information related to this will be described later.

On the other hand, the protective lens 113 of the upper mask 110 is formed with a depression 113a recessed from the lower center to the upper side. That is, the protective lens 113 is a depression 113a is formed at the position where the wearer's nose is disposed. In addition, the upper mask 110 supports the protective lens 113 and includes a first frame 140 and a second frame 145 in close contact with the face of the wearer. Here, the first frame 140 supports the edge of the protective lens 113, but has an open portion 140a cut out from the center of the protective lens 113 to correspond to the depression 113a, the protective lens It protrudes from 113 in a wearer direction. In addition, both ends of the second frame 145 extend from the first frame 140 (opening portion 140a) to support the edge of the recess 113a. The lower mask 120 is detachably coupled using the first frame 140 and the second frame 145, which will be described later.

4 is a perspective view of the filter unit is added to the multi-function mask according to an embodiment of the present invention. As shown in Figure 4, the upper end of the upper mask 110 may be provided with a filter unit 130 for purifying the gas. The filter unit 130 supplies the purified gas to the upper mask 110 through the suction hole 115. By providing the filter unit 130, the multifunctional mask 100 can be used as a dust mask or a gas mask. Here, the filter unit 130 is not particularly limited, but may be a dust filter formed of a carbon filter such as activated carbon, a filter paper, or the like.

The lower mask 120 supplies the gas or external gas purified by the filter unit 130 to the wearer's nose or mouth, and discharges the gas discharged from the wearer's nose or mouth to the outside. Here, the lower mask 120 covers the wearer's nose or mouth, and is provided with a packing in close contact with the wearer and the face, thereby preventing external bacteria, fine dust, water, or the like from entering. Meanwhile, the lower mask 120 (refer to FIGS. 1 to 3) may include a first check valve 123 communicating with the upper mask 110 and a second check valve 125 communicating with the outside. Here, the first check valve 123 may pass the gas only in the direction of the lower mask 120 in the upper mask 110, it may not pass in the direction of the upper mask 110 in the lower mask 120. Therefore, the gas introduced into the upper mask 110 through the suction hole 115 may be delivered to the lower mask 120 through the first check valve 123 and sucked into the wearer's nose or mouth. At this time, since a new gas is continuously introduced into the upper mask 110 through the suction hole 115, the temperature difference between the inside of the protective lens 113 and the outside of the protective lens 113 is reduced, accordingly the protective lens Moisture can be prevented from being generated at 113. In addition, in the second check valve 125, the gas may pass through the lower mask 120 only in an outward direction, and may not pass outside from the outside in the direction of the lower mask 120. Therefore, the gas discharged from the wearer's nose or mouth is discharged to the outside through the second check valve 125, it is not discharged toward the upper mask 110. As a result, the occurrence of moisture in the protective lens 113 of the upper mask 110 by the gas discharged from the wearer's nose or mouth can be prevented in advance.

More specifically, the lower mask 120 may be a nose mask 120a, the width of which is narrow between both sides toward the upper side to cover the wearer's nose. In this case, the lower mask 120 covers only the wearer's nose and does not cover the wearer's mouth. As such, when the lower mask 120 is the nose mask 120a, the first check valve 123 is formed on the side of the nose mask 120a, and the second check valve 125 is a nose mask ( It may be formed on the lower surface of 120a).

However, the lower mask 120 is not necessarily composed of only nose mask (120a). 5A to 5B are perspective views in which an acquisition mask is added to a multifunctional mask according to an embodiment of the present invention. As shown in FIGS. 5A to 5B, the lower mask 120 covers the wearer's nose, and the lower side of the nose receiving mask 120a and the nose receiving mask 120a, the width of which is narrowed between both sides toward the upper side. It may be provided, and may include an inlet mask 120b formed to cover the wearer's mouth. In this case, the lower mask 120 covers both the mouth and nose of the wearer. As such, when the lower mask 120 includes the nose mask 120a and the acquisition mask 120b, the first check valve 123 is formed on the side surface of the nose mask 120a and the second check valve. 125 may be formed on the front surface of the acquisition mask 120b.

However, the positions of the first check valve 123 and the second check valve 125 described above are exemplary, but are not necessarily limited thereto. In addition, the type of the first check valve 123 and the second check valve 125 is not particularly limited, but as shown in FIGS. 1A to 1B, the panel 126a having openings formed therein to allow gas to pass therethrough. And a check member 126b fixed to one side of the panel 126a. Due to the panel 126a and the check member 126b, when pressure is applied in one direction, the gas passes through the panel 126a while the check member 126b is bent, and the pressure in the other direction (the direction opposite to the one direction). When this is applied, the check member 126b closes the panel 126a to prevent gas from passing through.

On the other hand, Figures 6 to 7 is a perspective view showing the operation of the multi-function mask according to an embodiment of the present invention, with reference to this to look at the operation of the multi-function mask 100 according to this embodiment.

First, as shown in FIG. 6, when the wearer inhales air through the nose or mouth covered by the lower mask 120 while the wearer wears the multi-function mask 100, the upper part is provided through the first check valve 123. Air is transferred from the mask 110 to the lower mask 120. In addition, as the air of the upper mask 110 is transferred to the lower mask 120, new air is supplied to the upper mask 110 through the suction hole 115. Therefore, each time the wearer inhales air, the air continues to flow into the upper mask 110, and the temperature difference between the inside and the outside of the protective lens 113 decreases, so that moisture is generated in the protective lens 113. Can be prevented. On the other hand, the second check valve 125 is the air can pass only in the outer direction from the lower mask 120, and can not pass in the direction of the lower mask 120 from the outside, it is covered with the lower mask 120 Even if the air is sucked through the nose or mouth, external air is not directly supplied to the lower mask 120 through the second check valve 125.

Next, as shown in FIG. 7, when the wearer discharges air to the nose or mouth covered by the lower mask 120 while the wearer wears the multi-function mask 100, the lower portion is passed through the second check valve 125. Air is exhausted from the mask 120 to the outside. However, the first check valve 123 may pass the air only in the direction of the lower mask 120 from the upper mask 110, and may not pass in the direction of the upper mask 110 from the lower mask 120, Even though the air is discharged through the nose or mouth covered by the lower mask 120, the air discharged through the nose or mouth is not transferred to the upper mask 110. Therefore, it is possible to prevent the moisture generated in the protective lens 113 of the upper mask 110 by the air discharged from the nose and mouth.

Meanwhile, FIG. 8 is a front view in which an induction tube is added to the multifunctional mask according to the embodiment of the present invention. As shown in FIG. 8, an induction tube 150 may be provided below the nose receiving mask 120a. Here, the induction pipe 150 is the center is coupled to the lower side of the nose mask 120a, the fluid communication with the second check valve 125, both ends of the pipe extending from both sides in the direction of the upper mask 110 Is formed. Therefore, the induction pipe 150 may guide the gas discharged to the outside through the second check valve 125 to both side surfaces of the upper mask 110. In this way, the induction pipe 150 guides the gas to both sides of the upper mask 110, so that the protective lens 113 of the upper mask 110 by the gas discharged to the outside through the second check valve 125. Moisture can be prevented from occurring.

In the multifunction mask 100 according to the present exemplary embodiment, the lower mask 120 is coupled to the upper mask 110 in a detachable manner. As such, since the lower mask 120 is detachably coupled to the upper mask 110, there is an advantage in that the lower mask 120 may be replaced to correspond to the shape or size of the wearer's nose.

Specifically, the lower mask 120 may be formed separately from the upper mask 110, and may be attached to the first frame 140 and the second frame 145 as an adhesive component. In this case, since the adhesive component has an adhesive force that can be separated when a predetermined force is applied, the lower mask 120 may be detachably coupled to the first frame 140 and the second frame 145. .

Also, as shown in FIGS. 1 and 2, the lower mask 120 may be structurally coupled to the first frame 140 and the second frame 145.

Specifically, as shown in FIGS. 1A to 1B, a first groove 141 extending in the direction of the protective lens 113 from the wearer is formed at a side of the first frame 140 exposed by the opening 140a. The first protrusion 121 protruding to be inserted along the first groove 141 may be formed at lower ends of both sides of the lower mask 120. The lower mask 120 may slide in the forward direction from the rear of the upper mask 110 by the first groove 141 and the first protrusion 121. In addition, a second groove portion 122 extending along an edge is formed at the front end of the upper mask 110, and a second protrusion 146 protruding to correspond to the second groove portion 122 in front of the second frame 145. ) May be formed. Therefore, the lower mask 120 slides forward from the rear of the upper mask 110 in the forward direction, and the second groove 122 may be caught by the second protrusion 146 to stop. In addition, a first fastening groove 141a may be formed in the first groove 141, and a first fastening protrusion 121a protruded to correspond to the first fastening groove 141a in the first protrusion 121. Can be formed. Accordingly, the lower mask 120 slides forward from the rear of the upper mask 110 in the forward direction, and when the first fastening protrusion 121a is inserted into and fastened to the first fastening groove 141a, the lower mask 120 is inserted into the lower mask 120. It may be combined with the upper mask 110. In addition, when a force is applied to the lower mask 120 in the rearward direction, the first fastening protrusion 121a may be separated from the first fastening groove 141a so that the lower mask 120 may be separated from the upper mask 110.

Alternatively, as shown in FIGS. 2A to 2B, a second groove portion 122 extending along an edge is formed at the front end of the lower mask 120, and a second groove portion 122 is formed in the second frame 145. A second protrusion 146 protruding to correspond may be formed. By the second groove 122 and the second protrusion 146, the lower mask 120 may slide in an upward direction from the lower side of the upper mask 110. In addition, recessed second fastening grooves 141b are formed in the side surfaces of the first frame 140 exposed by the opening part 140a, and the second fastening grooves 141b are formed at lower ends of both sides of the lower mask 120. The second fastening protrusion 121b may be formed to correspond to the second fastening protrusion 121b. Therefore, the lower mask 120 is inserted while sliding upward from the lower side of the upper mask 110, the lower mask 120 is inserted when the second fastening protrusion 121b is inserted into the first fastening groove 141a and fastened. It may be coupled to the upper mask 110. In addition, when a force is applied to the lower mask 120 in the downward direction, the second fastening protrusion 121b may be separated from the second fastening groove 141b so that the lower mask 120 may be separated from the upper mask 110.

As such, since the lower mask 120 is detachably coupled to the upper mask 110, as shown in FIG. 9, the lower mask 120 may be used while replacing various types of lower mask 120 (a nose mask 120a). have. For example, the lower mask 120 (nasal mask 120a) may have a flat front surface (see FIG. 9 (a)), or may be sharp (see FIG. 9 (b)), depending on the shape or size of the wearer's nose. It may be blunt (see FIG. 9 (c)), or may be narrower and flatter as it goes forward at a predetermined thickness (see FIG. 9 (d)).

On the other hand, the multi-function mask 100 according to the present embodiment may be utilized in various forms, such as motorcycles, bicycles, skis, military police, work safety goggles. In addition, the multifunction mask 100 according to the present exemplary embodiment may include a hood 160 coupled to the upper mask 110 and the lower mask 120 as shown in FIG. 10. The hood 160 may cover the head of the wearer to increase dust or gas decontamination efficiency or to protect the head.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

According to the present invention, each time the wearer inhales the gas (air), the upper mask is freshly introduced into the upper mask, thereby preventing the moisture from occurring in the protective lens.

100: multi-function mask 110: upper mask

113: protective lens 113a: depression

115: suction hole 120: lower mask

120a: nose mask 120b: mask for acquisition

121: first protrusion 121a: first fastening protrusion

121b: second fastening protrusion 122: second groove portion

123: first check valve 125: second check valve

126a: panel 126b: check member

130: filter unit 140: first frame

140a: opening portion 141: first groove portion

141a: first fastening groove 141b: second fastening groove

145: second frame 146: second protrusion

150: guide tube 160: hood

Claims

An upper mask provided with a protective lens to cover the wearer's eyes and to secure a visual field, and having a suction hole at one side thereof; And

A lower mask that is detachably coupled to the upper mask and covers the wearer's nose or mouth, and has a first check valve communicating with the upper mask and a second check valve communicating with the outside;

Including,

The first check valve may allow the gas to pass only in the direction of the lower mask from the upper mask, the second check valve may allow the gas to pass outwardly from the lower mask,

The gas introduced into the upper mask through the suction hole is delivered to the lower mask through the first check valve, and is sucked into the wearer's nose or mouth,

The gas discharged from the wearer's nose or mouth is discharged to the outside through the second check valve.
The method according to claim 1,

The suction hole is a multi-function mask formed on the top or side of the upper mask.
The method according to claim 1,

The lower mask is,

The multifunctional mask is a nose mask for narrowing the width between both sides toward the upper side to cover the wearer's nose.
The method according to claim 3,

The first check valve is formed on the side of the nose mask,

The second check valve is a multi-function mask is formed on the lower surface of the nose mask.
The method according to claim 3,

A center is coupled to the lower side of the nose mask, and both ends are formed in a tube extending from the center to both side surfaces of the upper mask to guide gas discharged to the outside through the second check valve to both sides of the upper mask. Induction pipe to be;

Multifunctional mask including more.
The method according to claim 1,

The lower mask is,

A nose mask for narrowing the width between both sides toward the upper side to cover the wearer's nose; And

An acquisition mask provided under the nose mask and formed to cover the wearer's mouth;

Multifunctional mask comprising a.
The method according to claim 6,

The first check valve is formed on the side of the nose mask,

The second check valve is a multi-function mask formed on the front of the mask for the acquisition.
The method according to claim 1,

A filter unit provided at an upper end of the upper mask to purify the gas and supply the purified gas to the upper mask through the suction hole;

Multifunctional mask including more.
The method according to claim 1,

And a hood coupled to the upper mask and the lower mask to cover the head of the wearer.
The method according to claim 1,

The protective lens is provided with a depression recessed from the lower center to the image side,

The upper mask,

A first frame supporting an edge of the protective lens, the opening having a cut portion formed in a lower portion of the center of the protective lens so as to correspond to the depression, and protruding toward the wearer from the protective lens; And

A second frame extending from the first frame to support an edge of the depression;

Including;

And the lower mask is detachably coupled to the first frame and the second frame.
The method according to claim 10,

The lower mask is a multifunctional mask is detachably coupled to the first frame and the second frame by an adhesive component.
The method according to claim 10,

A first groove portion extending from the wearer toward the protective lens is formed on a side surface of the first frame exposed by the opening portion.

First protrusions protruding to be inserted along the first groove are formed at lower ends of both sides of the lower mask,

A second groove portion extending along the edge is formed at the front end of the lower mask,

And a second protrusion protruding from the second frame to correspond to the second groove.
The method according to claim 12,

The first groove is formed in the first groove recessed,

The first protrusion has a multifunctional mask formed with a first fastening protrusion protruding to correspond to the first fastening groove.
The method according to claim 10,

A second groove portion extending along the edge is formed at the front end of the lower mask,

The second frame is provided with a second protrusion protruding to correspond to the second groove,

A second fastening groove is formed in the side surface of the first frame exposed by the opening,

A multifunctional mask having second fastening protrusions protruding to correspond to the second fastening grooves on both lower ends of the lower mask.