KR102621826B1 - Face protection shield with adjustable shield angle - Google Patents

Abstract

The present invention relates to a shield for face protection capable of adjusting the shield angle.
According to an embodiment of the present invention, a transparent shield is installed on the front of a shield frame with a structure similar to an eyeglass frame, and the angle of the transparent shield can be easily adjusted and maintained based on the rotation axis and the catching groove provided on the shield frame. A face protection shield capable of adjusting the shield angle is disclosed.

Description

Face protection shield with adjustable shield angle}

The present invention relates to a shield for face protection capable of adjusting the shield angle, and more specifically, to a shield having a transparent shield installed on the front of a shield frame with a structure similar to an eyeglass frame, based on a pivot axis and a catching groove provided on the shield frame. This relates to a face protection shield capable of adjusting the angle of the transparent shield, which is configured to easily adjust and maintain the angle.

In health and medical work environments, face protection shields with transparent shields are used to block the user's face from the external environment.

As another example, face shields are used to block visible rays or ultraviolet rays of sunlight to watch sports games or engage in various outdoor activities. Face shields for this purpose may have a transparent shield that is colored to provide a sunglasses effect or may have a transparent shield with a UV-blocking coating.

As an example of the prior art, Republic of Korea Registered Utility Model No. 20-0240801 (registered on July 20, 2001) relates to a shield frame for face protection, which includes a frame having a seating portion for attaching and detaching a nose ring at the center of the inner surface; Legs whose rear end is curved to fit around the ear and whose front side is integrally provided with a support member protruding outward, and which are coupled to the frame with a pin; A shield frame for face protection was proposed, which consists of a shield made of synthetic resin capable of forward projection, with both sides inserted into the inside of the support member and fixed by compression pieces.

However, in the prior art, a soft pressing pin is inserted into the support piece constituting the shield fixing member, and the shield is installed with the end penetrating the space formed between the outer peripheral surface of the leg and the shield fixing member, and the pressing pin is installed. It is configured to allow the angle of the shield to be adjusted around , but since the angle of the shield is adjusted using a soft pressure pin, there is a limitation in that the angle maintenance effect is not strong due to the load of the shield. In particular, when used outdoors in the summer or in a high-temperature indoor environment, there was a limitation that the pressure pins became softer and it was difficult to maintain the shield angle.

In addition, in the prior art, the nose pad is installed in a detachable/attachable manner to the frame, but there is no function to adjust the angle of the nose pad, so there is a limitation in providing user convenience corresponding to the face shape of various users.

Republic of Korea registered utility model 20-0240801 (registered on July 20, 2001) Republic of Korea registered patent 10-1116947 (registered on February 7, 2012)

The present invention was developed in consideration of the above problems, and has a transparent shield installed on the front of a shield frame with a structure similar to an eyeglass frame, and the angle of the transparent shield is adjusted based on the rotation axis and the catching groove provided on the shield frame. The purpose is to provide a face protection shield capable of adjusting the shield angle, which is configured to easily maintain the angle.

According to one aspect of the present invention for achieving the above object, left and right legs that span the user's left and right ears, respectively, are provided on the left and right sides of the front frame that transversely crosses the user's forehead, respectively. shield frame; and is formed of a transparent plate having elasticity and installed to cover at least the front surface of the shield frame, wherein the upper left portion curved to the left is coupled to the left front outer portion of the shield frame, and the upper right portion curved to the right is connected to the upper left portion of the shield frame. It includes a transparent shield configured to be coupled to the right front outer portion of the shield frame, wherein the upper left and upper right portions of the transparent shield each have a rotation hole, and rotate based on rotation axes formed on the left and right sides of the shield frame, respectively. The shield angle can be adjusted by combining it in a possible structure, and the upper left and right upper parts of the transparent shield each have a plurality of engaging grooves arranged in conjunction with each other, and engaging protrusions are formed on the left and right sides of the shield frame, respectively. and a face protection shield capable of adjusting the shield angle, which is configured to maintain the shield angle adjustment state based on the locking position of the locking groove.

Preferably, a left rotation axis is formed in the left front outer part of the shield frame, a right rotation axis is formed in the right front outer part of the shield frame, and a left rotation axis is inserted and coupled to the left rotation axis in the upper left part of the transparent shield. A hole for right rotation is formed through, and a right rotation hole inserted into and coupled to the right rotation shaft is formed through the upper right portion of the transparent shield.

Preferably, the left hooking protrusion is formed at a position spaced rearward from the left pivot axis of the shield frame, and the right hook protrusion is formed at a position spaced rearward from the right pivot axis of the shield frame, and the transparent shield A plurality of hooking grooves are arranged in contiguous alignment along the edge of the upper left portion of the transparent shield to form a left hooking groove that engages the left hooking protrusion, and a plurality of hooking grooves are arranged in contiguous alignment along the edge of the upper right portion of the transparent shield. A right engaging groove is formed to engage with the right engaging protrusion.

Preferably, the left hooking protrusion is formed at a position spaced forward from the left pivot axis of the shield frame, and the right hook protrusion is formed at a position spaced forward from the right pivot axis of the shield frame, and the transparent shield A plurality of hooking grooves are arranged in contiguous connection at a point on the upper left side of the transparent shield, and a left hooking groove is formed through and connected to the left hooking protrusion, and a plurality of hooking grooves are arranged in contiguous contact with a point on the upper right side of the transparent shield. A right engaging groove that is engaged with the right engaging protrusion is formed through the right engaging groove.

Preferably, a left shield engaging piece is formed on the front outer side of the left leg, branched forward and extending in a form having a gap with the left leg, and a left rotating axis and a left locking protrusion are formed on the inner surface of the left shield engaging piece. A right shield coupling piece is formed on the front outer side of the right leg, branched forward and extending in a form having a gap with the right leg, and a right rotation axis and a right locking protrusion are formed on the inner surface of the right shield coupling piece. , the upper left portion of the transparent shield is inserted through the space between the left leg and the left shield coupling piece, is coupled to the left rotation axis in a rotatable structure, and is caught by the left engaging protrusion, and the upper right portion of the transparent shield is It is inserted through the space between the right leg and the right shield coupling piece, is coupled to the right rotation axis in a rotatable structure, and is caught by the right locking protrusion.

Preferably, a left guide rib is formed on the front outer side of the left leg at a position facing the left shield coupling piece and contacts the inner surface of the transparent shield to determine the curved shape of the left side of the transparent shield, A right guide rib is formed on the front outer side of the right leg at a position facing the right shield coupling piece, which contacts the inner surface of the transparent shield and determines the curved shape of the right side of the transparent shield.

Preferably, the left guide rib and the right guide rib each consist of two ribs arranged side by side with an upper and lower spacing.

Preferably, the left guide rib and the right guide rib are formed to have a greater height toward the front side.

Preferably, the left leg and the right leg are integrally formed to extend from the left or right side, respectively, of the front frame.

Preferably, the present invention includes a nose ring coupling bar formed on the upper central side of the front frame, extending in a direction parallel to the front frame, and configured to enable a nose ring to be coupled thereto; And it is configured to include; a nose ring including a locking coupling portion that is inserted and coupled in a form surrounding the upper side of the nose ring coupling rod.

Preferably, the nose ring can be rotated in the front-back direction around the nose ring coupling rod, and a plurality of hooking protrusions formed on one side of the nose ring and the front frame are arranged along the front-back direction on the other side. The rotational position of the nose ring is determined according to the position where it is caught in one of the grooves.

The present invention has the advantage of providing a face protection shield configured to easily adjust and maintain the angle of the transparent shield based on the rotation axis and the engaging groove provided in the shield frame.

In addition, the present invention has the advantage of allowing the curved shapes of the left and right sides of the transparent shield to be firmly supported while maintaining a preset angle by using a guide rib provided on the shield frame.

1 is a perspective view of a face protection shield according to an embodiment of the present invention;
Figure 2 is an exploded perspective view of a face protection shield according to an embodiment of the present invention;
Figure 3 is a partial perspective view of a shield for face protection according to an embodiment of the present invention;
Figure 4 is a partially exploded perspective view of a shield for face protection according to an embodiment of the present invention;
Figure 5 is a partial perspective view of another direction of a face protection shield according to an embodiment of the present invention;
6 is a partial cross-sectional view of a face protection shield according to an embodiment of the present invention;
Figure 7 is a partial schematic diagram showing examples of the rotation hole and the locking groove of the face protection shield according to an embodiment of the present invention;
Figure 8 is a partial cross-sectional view for explaining the nose ring of a face protection shield according to an embodiment of the present invention.

The present invention can be implemented in various other forms without departing from its technical spirit or main features. Accordingly, the embodiments of the present invention are merely examples in all respects and should not be construed as limited.

Terms such as first, second, etc. are used only for the purpose of distinguishing one component from another component. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected to or connected to the other component, but other components may also exist in between.

As used in this application, singular expressions include plural expressions, unless the context clearly dictates otherwise. In this application, terms such as “comprise”, “provide”, “have”, etc. are intended to express the presence of the components described in the specification or a combination thereof, but do not indicate the possibility that other components or features may be present or added. It is not excluded in advance.

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

Hereinafter, in explaining elements symmetrically provided on both left and right sides, for convenience of explanation, the drawing symbols for the left and right elements are described separately, but in some drawings, only the components for either the left or right elements are used. Elements in other directions that are illustrated and provided symmetrically may be omitted. In this case, the symmetrically configured element in the other direction is understood to have the same left-right symmetrical configuration as the element illustrated in the drawing.

Figure 1 is a perspective view of a face protection shield according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a face protection shield according to an embodiment of the present invention, and Figure 3 is a partial perspective view of a face protection shield according to an embodiment of the present invention. , FIG. 4 is a partially exploded perspective view of a face protection shield according to an embodiment of the present invention, FIG. 5 is a partial perspective view of a face protection shield in another direction according to an embodiment of the present invention, and FIG. 6 is an embodiment of the present invention. Figure 7 is a partial cross-sectional view of a face protection shield according to an embodiment of the present invention, and Figure 7 is a partial schematic diagram showing examples of the rotation hole and the engaging groove of the face protection shield according to an embodiment of the present invention.

The face protection shield of this embodiment includes a shield frame 10 and a transparent shield 20.

The shield frame 10 has a left leg 14 and a right leg 14 that span the user's left and right ears, respectively, on the left (L) and right (R) sides of the front frame 12 that transversely crosses the user's forehead. Each leg 16 is provided.

For example, the shield frame 10 is made of synthetic resin injection molding, and the left leg 14 and right leg 16 extend integrally from the left side (L) or right side (R), respectively, of the front frame 12. is formed However, the left leg 14 and the right leg 16 are not necessarily limited to this integrated structure and may be configured as a known folding structure. Synthetic resin can be any material that can be manufactured by injection molding and is elastic and lightweight, and is not limited to a specific material.

The transparent shield 20 is formed of an elastic transparent plate and is installed to cover at least the front surface of the shield frame 10, and the upper left portion 24 curved to the left is located at the shield frame 10. It is coupled to the left front outer portion 14a of , and the upper right portion 26 curved to the right is configured to be coupled to the right front outer portion 16a of the shield frame 10.

The upper left part 24 and the upper right part 26 of the transparent shield 20 are each provided with rotation holes 242 and 262, based on the rotation axes 142 and 162 formed on the left and right sides of the shield frame 10, respectively. By combining it with a rotatable structure, the shield angle (a) can be adjusted. As illustrated in FIG. 1, the transparent shield 20 can rotate in the R1-R2 direction around the rotation axes 142 and 162.

The upper left portion 24 and the upper right portion 26 of the transparent shield 20 each have engaging grooves 244 and 264 in which a plurality of engaging grooves FR are disposed adjacently, and the left upper portion 24 and 26 of the transparent shield 20 have And based on the engaging positions of the engaging protrusions 144 and 164 formed on the right side and the engaging grooves 244 and 264, respectively, the shield angle can be maintained in an adjustable state.

In more detail, a left rotation axis 142 is formed on the left front outer part 14a of the shield frame 10, and a right rotation axis 162 is formed on the right front outer part 16a of the shield frame 10. do.

In addition, a left rotation hole 242 that is inserted and coupled to the left rotation axis 142 is formed through the upper left portion 24 of the transparent shield 20, and the upper right portion 26 of the transparent shield 20 A right rotation hole 262 that is inserted and coupled to the right rotation shaft 162 is formed through.

Meanwhile, the engaging protrusions 144 and 164 and the engaging grooves 244 and 264 may be formed in the following structure.

For example, as shown in (a) of FIG. 7, a left locking protrusion 144 is formed at a position spaced apart from the left rotational axis 142 of the shield frame 10 toward the rear (A2 in FIG. 1), and the A right locking protrusion 164 is formed at a position spaced apart from the right rotation axis 162 of the shield frame 10 toward the rear (A2 in FIG. 1).

In addition, a plurality of engaging grooves FR are arranged adjacent to each other along the edge of the upper left portion 24 of the transparent shield 20 to form a left engaging groove 244 engaging with the left engaging protrusion 144. A plurality of engaging grooves (FR) are arranged adjacently along the edge of the upper right portion 26 of the transparent shield 20 to form a right engaging groove 264 engaging with the right engaging protrusion 164. do.

In the case of this configuration, the engaging grooves 244,264 are formed along the edge of the transparent shield 20 in a close to flat unfolded state, so that the engaging coupling of the catching protrusions 144,164 and the catching grooves 244,264 can be stably achieved. There is an advantage to being able to do this.

As another example, as shown in (b) of FIG. 7, a left hooking protrusion 144 is formed at a position spaced forward from the left rotation axis 142 of the shield frame 10, and the shield frame 10 A right locking protrusion 164 is formed at a position spaced apart from the right rotation axis 162 on the front side.

In addition, a plurality of engaging grooves (FR) are disposed adjacently at one point of the upper left portion 24 of the transparent shield 20, and the left engaging groove 244, which is engaged with the left engaging protrusion 144, penetrates. A right engaging groove 264 is formed, and a plurality of engaging grooves FR are disposed adjacently at one point of the upper right portion 26 of the transparent shield 20, thereby engaging the right engaging protrusion 164. formed through penetration.

In the case of taking this configuration, the catching grooves 244 and 264 are formed through the middle position rather than the edge of the transparent shield 20, so the advantage is that the catching grooves 244 and 264 can be prevented from being easily damaged or deformed by external force. There is.

Meanwhile, the rotation axes 142 and 162 and the engaging protrusions 144 and 164 may be formed in the following structure.

A left shield coupling piece 146 is formed on the front outer side of the left leg 14, branching toward the front (A1 in FIG. 1) and extending in a shape having a gap S with the left leg 14, A left rotation axis 142 and a left locking protrusion 144 are formed on the inner surface of the left shield coupling piece 146.

A right shield coupling piece 166 is formed on the front outer side of the right leg 16, branched forward and extending in a shape with a gap S with the right leg 16, and the right shield coupling piece 166 ) A right rotation axis 162 and a right locking protrusion 164 are formed on the inner surface.

The left upper part 24 of the transparent shield 20 is inserted through the space between the left leg 14 and the left shield coupling piece 146 and is rotatably coupled to the left rotation axis 142. Locking is achieved by the locking protrusion 144.

The upper right portion 26 of the transparent shield 20 is inserted through the space between the right leg 16 and the right shield coupling piece 166 and is rotatably coupled to the right rotation axis 162. Locking is achieved by the locking protrusion 164.

When taking this configuration, the left upper part 24 and the upper right part 26 of the transparent shield 20 are curved by an external force, and the left / right legs 14, 16 and the left / right shield coupling pieces 146, 166 are connected. Since the left/right shield coupling pieces 146 and 166 limit the elastic restoring force that tries to spread outward again after each insertion through the gap S, the upper left portion 24 and the upper right portion 26 are connected to the left/right portion. It has the advantage of being naturally and firmly coupled to the rotation axes 142 and 162 formed on the inner surfaces of the right shield coupling pieces 146 and 166.

Meanwhile, as a modified example, when the left leg 14 and the right leg 16 are configured in a known folding structure and coupled to the left (L) and right (R) sides of the front frame 12, the left shield coupling piece ( 146) and the right shield coupling piece 166 may be formed on the bent left (L) and right (R) ends of the front frame 12.

Meanwhile, in order to more preferably determine the curved shape of the left and right sides of the transparent shield 20, guide ribs 148 and 168 may be provided as follows.

The front outer portion 14a' of the left leg 14 is in contact with the inner surface of the transparent shield 20 at a position facing the left shield coupling piece 146, and the left side of the transparent shield 20 is curved ( A left guide rib 148 that determines the shape is formed.

The front outer portion 16a' of the right leg 16 is in contact with the inner surface of the transparent shield 20 at a position facing the right shield coupling piece 166, thereby forming a curved shape on the right side of the transparent shield 20. A right guide rib 168 is formed that determines .

Preferably, the left guide rib 148 and the right guide rib 168 are each composed of two ribs arranged side by side with an upper and lower distance between them.

Additionally, the left guide rib 148 and the right guide rib 168 are formed to have a greater height toward the front (A1) side.

When taking this configuration, the curved shape of the left and right sides of the transparent shield 20 is firmly maintained while maintaining the angle preset by the left/right shield coupling pieces 146 and 166 and the left and right guide ribs 148 and 168. There are advantages to supporting it.

Figure 8 is a partial cross-sectional view for explaining the nose ring of a face protection shield according to an embodiment of the present invention.

The face protection shield of this embodiment includes a nose ring (40) coupled through a nose ring coupling rod (32).

The nose ring coupling rod 32 is formed on the upper central side of the front frame 12, extends in a direction parallel to the front frame 12, and is configured to enable the nose ring 40 to be coupled thereto.

The nose ring 40 includes a locking portion 42 that is inserted and coupled to surround the upper side of the nose ring coupling rod 32.

The nose ring 40 can be rotated in the forward and backward directions (A1-A2) around the nose ring coupling rod 32. In more detail, as illustrated in FIG. 8, the nose ring 40 can rotate in the R3-R4 direction around the nose ring coupling rod 32.

In addition, the nose ring 40 of this embodiment has a plurality of catching protrusions 40a formed on one side of the nose ring 40 and the front frame 12 along the front-back direction (A1-A2) on the other side. The rotational position of the nose ring 40 is determined according to the position at which it is engaged with any one of the engaging grooves 12a arranged.

The nose ring 40 may be installed in the middle portion 30 of the front frame 12.

As an example, the nose ring 40 is provided with a coupling body 44 configured to surround the rear and bottom sides of the front frame 12, and an upper front side of the coupling main body 44, and It is configured to include a locking engaging portion 42 that is inserted and coupled in a form surrounding the upper side of the nose ring coupling rod 32, and a nose support portion 46 extending to the lower side of the coupling main body portion 44.

In the case of this embodiment, a catching protrusion 40a is formed on the surface of the coupling body portion 44 of the nose pad 40 surrounding the bottom side of the front frame 12, and on the bottom surface of the front frame 12. A plurality of locking grooves 12a are disposed along the front-back direction (A1-A2). Of course, the positions of the locking protrusion 40a and the plurality of locking grooves 12a may be opposite to each other.

The rotational position of the nose pad 40 may be determined depending on the position at which the engaging protrusion 40a is engaged with any one of the plurality of engaging grooves 12a.

Through the above configuration, the face protection shield of this embodiment can adjust the angle of the nose ring 40, thereby providing a comfortable fit according to the shape and size of the user's face and nose. In addition, in the nose ring 40 of this embodiment, the hooking protrusion 40a can selectively fix the locking position to any one of the plurality of locking grooves 12a, so that the rotation position set by the user can be easily changed by an external force. It has the advantage of providing retention to prevent changes.

Each element of the nose ring 40 can be manufactured as one piece by injection molding.

Although the present invention has been described with a focus on preferred embodiments with reference to the accompanying drawings, it is clear to those skilled in the art that many various and obvious modifications can be made from this description without departing from the scope of the present invention. Accordingly, the scope of the present invention should be interpreted by the stated claims to include these many modifications.

10: Shield frame
12: Front frame
12a: Jamming groove
14: Left leg
16: Right leg
20: transparent shield
24: upper left part
26: Upper right part
32: Nose ring coupling rod
40: Nose ring
40a: catching protrusion
42: Locking joint
44: combined body part
46L: Left nasal support
46R: Right nasal support
142,162: Rotation axis
144,164: Jamming protrusion
146,166: Shield combination piece
148,168: Guide rib
242,262: Meeting hall
244,264: Jamming groove

Claims (11)

a shield frame provided with left and right legs respectively spanning the user's left and right ears on the left and right sides of the front frame that transversely crosses the user's forehead; and
It is formed of a transparent plate with elasticity and is installed to cover at least the front of the shield frame, the upper left portion curved to the left is coupled to the left front outer portion of the shield frame, and the upper right portion curved to the right is connected to the shield. It includes a transparent shield configured to be coupled to the right front outer portion of the frame,
The upper left portion of the transparent shield is provided with a hole for left rotation, and the upper right portion is provided with a hole for right rotation, and is coupled in a structure capable of rotation based on the left rotation axis formed on the left side of the shield frame and the right rotation axis formed on the right side. Shield angle can be adjusted,
The upper left part of the transparent shield has a left engaging groove in which a plurality of engaging grooves are arranged in contiguous connection, and the upper right part has a right engaging groove in which a plurality of engaging grooves are arranged in connection with each other, and the left engaging groove is formed on the left side of the shield frame. Based on the protrusion and the right hooking protrusion formed on the right side and the locking positions of the left hooking groove and the right hooking groove of the transparent shield, it is configured to maintain the shield angle adjustment state,
A left shield coupling piece is formed on the front outer side of the left leg, branched forward and extending in a form having a gap with the left leg, and the left rotation axis and the left locking protrusion are formed on the inner surface of the left shield coupling piece, ,
A right shield coupling piece is formed on the front outer side of the right leg, branched forward and extending in a form having a gap with the right leg, and the right rotation axis and the right locking protrusion are formed on the inner surface of the right shield coupling piece, ,
The upper left portion of the transparent shield is inserted in a state curved by an external force through the space between the left leg and the left shield connecting piece, and is connected to the left rotation axis in a state in which the left shield connecting piece limits the elastic restoring force to spread outward. It is combined with a rotatable structure and caught by the left hooking protrusion,
The upper right portion of the transparent shield is inserted in a curved state by an external force through the space between the right leg and the right shield connecting piece, and is connected to the right rotation axis with the right shield connecting piece limiting the elastic restoring force to spread outward. A face protection shield with an adjustable shield angle, characterized in that it is combined with a rotatable structure and caught by the right hooking protrusion.
According to paragraph 1,
The left rotation hole inserted into and coupled to the left rotation axis is formed through the upper left part of the transparent shield, and the right rotation hole inserted into and coupled to the right rotation axis is formed through the upper right part of the transparent shield. A face protection shield with adjustable shield angle.
According to paragraph 2,
A plurality of hooking grooves are arranged in contiguous alignment along the edge of the upper left portion of the transparent shield to form the left hooking groove that is engaged with the left hooking protrusion, and a plurality of hooking grooves are formed along the edge of the upper right portion of the transparent shield. A face protection shield capable of adjusting the shield angle, characterized in that the right hooking groove is formed to be connected to the right hooking protrusion and engage with the right hooking protrusion.
According to paragraph 2,
A plurality of hooking grooves are disposed in contiguous contact at a point on the upper left side of the transparent shield, and the left hooking groove is formed to engage with the left hooking protrusion, and a plurality of hooking grooves are formed at a point on the upper right side of the transparent shield. A shield for face protection capable of adjusting the shield angle, characterized in that the right hooking groove is formed through the right hooking groove that is disposed in conjunction with the right hooking protrusion and engages with the right hooking protrusion.
delete According to paragraph 1,
A left guide rib is formed on the front outer side of the left leg at a position facing the left shield coupling piece and contacts the inner surface of the transparent shield to determine the curved shape of the left side of the transparent shield,
Shield angle adjustment is possible, characterized in that a right guide rib is formed on the front outer side of the right leg at a position facing the right shield coupling piece and contacts the inner surface of the transparent shield to determine the curved shape of the right side of the transparent shield. Face protection shield.
According to clause 6,
A face protection shield capable of adjusting the shield angle, characterized in that the left guide rib and the right guide rib each consist of two ribs arranged side by side with upper and lower spacing.
According to clause 6,
A face protection shield capable of adjusting the shield angle, characterized in that the left guide rib and the right guide rib are formed to have a greater height toward the front side.
According to paragraph 1,
A shield angle-adjustable face protection shield, characterized in that the left leg and the right leg are integrally formed to extend from the left or right side, respectively, of the front frame.
According to paragraph 1,
a nose ring coupling bar formed on the upper central side of the front frame, extending in a direction parallel to the front frame, and configured to allow a nose ring to be coupled thereto; and
A face protection shield capable of adjusting the shield angle, comprising: a nose ring including a locking portion that is inserted and coupled to surround the upper side of the nose ring coupling rod;
According to clause 10,
The nose ring can be rotated in the forward and backward directions around the nose ring coupling rod,
The rotational position of the nose ring is determined according to the position in which the hooking protrusion formed on one side of the nose ring and the front frame is engaged with one of the plurality of locking grooves arranged along the front and rear directions on the other side. Features: A face protection shield with adjustable shield angle.

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