WO2017135495A1

WO2017135495A1 - Portable oxygen mask

Info

Publication number: WO2017135495A1
Application number: PCT/KR2016/001859
Authority: WO
Inventors: 원두환
Original assignee: (주)스포이너
Priority date: 2016-02-04
Filing date: 2016-02-25
Publication date: 2017-08-10
Also published as: KR101862089B1; KR20170092819A; CN108883320A

Abstract

Disclosed is a portable oxygen mask. The portable oxygen mask according to one embodiment of the present invention comprises: a mask main-body configured to cover a nose and a mouth in order to isolate the nose and mouth from the outside; and an oxygen can mounted on the mask main-body to supply oxygen into the mask main-body, wherein the oxygen can includes: an oxygen storage space in which oxygen is stored; an oxygen passage that allows the oxygen storage space to communicate with the outside; an opening/closing valve that regulates an oxygen flow through the oxygen passage; and an expansion member provided in the oxygen storage space, wherein the expansion member resiliently expands by means of the pressure of the oxygen injected into the oxygen storage space and contracts to press the oxygen in the oxygen storage space toward the oxygen passage using a restoring force.

Description

Portable oxygen mask

The present invention relates to a portable oxygen mask, and more particularly to a portable oxygen mask with improved economics and ease of use.

As is well known through the flashover phenomenon, most of the toxic gases generated in a fire are generated during a short time in the early stage of the fire.

Therefore, one of the biggest causes of human injury in a fire accident is asphyxiation at the beginning of the fire.

Recently, a portable oxygen mask has been developed in which an oxygen can is integrally connected to a mask body to prevent asphyxiation in the early stage of a fire.

Patent application No. 10-0157800 registered and filed by the present applicant discloses an example of such a conventional portable oxygen mask.

The portable oxygen mask includes a mask body covering the nose and mouth around the outside in a blocked state, and an oxygen can directly connected to the mask body to supply oxygen into the mask body.

Therefore, in case of a fire, the portable oxygen mask user inhales the oxygen supplied to the mask body through the oxygen can while the inhalation of toxic gas is blocked by covering the nose and mouth around the mask body of the portable oxygen mask. By evacuating, it is possible to avoid asphyxiation due to toxic gases at the beginning of the fire.

However, such a conventional portable oxygen mask is discharged to the outside by the filling pressure and the remaining oxygen is wasted in the state remaining inside the oxygen can, there is a problem that can not use the oxygen stored in the oxygen can completely.

In addition, the conventional portable oxygen mask is provided so that when the oxygen can coupled to the mask body is rotated, the sealed oxygen outlet is opened in a form that is simply ruptured by a fixing needle formed in the mask body, so that the amount of oxygen discharged through the oxygen can There was a problem that is difficult to control.

In addition, the conventional portable oxygen mask that is fixed to all the configuration is difficult to differentiate the configuration for each product, there was a limit to implement a plurality of products of different grades, such as high-end specifications and low-end specifications.

An embodiment of the present invention is to provide a portable oxygen mask provided to suppress the waste of oxygen stored in the oxygen can is not used.

In addition, to provide a portable oxygen mask that can easily control the amount of oxygen discharged from the oxygen can.

In addition, to provide a portable oxygen mask that is easy to differentiate the composition by grade.

According to an aspect of the present invention, a mask body provided to cover the surroundings of the nose and mouth of the face in a blocked state from the outside, and an oxygen can mounted to the mask body to supply oxygen into the mask body In the portable oxygen mask, the oxygen can has an oxygen storage space for storing oxygen, an oxygen passage communicating with the outside of the oxygen storage space, an on / off valve for regulating the flow of oxygen through the oxygen passage, and the oxygen storage. A portable oxygen mask may be provided that includes an expansion member provided in the oxygen storage space to elastically expand by the injection pressure of the oxygen injected into the space and pressurize the oxygen inside the oxygen passage through a contraction restoring force.

The expansion member may include a rubber balloon having an inlet portion fixed to the oxygen passage so that the body portion thereof faces the center of the oxygen storage space.

The oxygen can may be rotatably coupled to the oxygen mask to adjust the amount of oxygen supplied to the mask body according to the rotation position.

The oxygen can further includes a body part in which an inner space forms the oxygen storage space, and a connection part extending from the body part so that the oxygen passage is formed therein, and the mask body is detachable in a rotatable state. A can holder is provided so as to be fitted in a manner such that the can holder is provided with a guide groove for guiding the coupling of the connection part, and the connection part is provided with a guide protrusion protruding to the side to be fitted into the guide groove. And an opening / closing member for increasing the opening degree of the oxygen passage according to the pressing degree, and the can holder is provided with a pressing part for pressing the opening / closing member, and the guide groove is slidably connected to the inside of the can holder. Sliding guide groove formed in the vertical direction to guide the operation, pressed by the pressing portion The guide may include a rotation guide groove which is inclined along the circumferential direction from the sliding guide groove to guide the rotation operation of the connecting portion to rotate so that the pressing degree of the opening and closing member is adjusted.

The rotation guide groove may be provided with a plurality of locking grooves for causing the locking of the guide projections in stages.

The oxygen passage may be provided with an oxygen control member for adjusting the amount of oxygen supplied from the oxygen storage space toward the on-off valve.

The on-off valve is screwed to the oxygen passage is provided to move along the oxygen passage in the rotational direction, the oxygen regulating member is compressed by the movement of the on-off valve to adjust the amount of oxygen passing through the periphery. Can be prepared.

The mask body may be detachably coupled to an illumination module for irradiating light and an additional module provided with a pollution detection sensor for detecting a pollution degree in the air.

The portable oxygen mask according to the embodiment of the present invention can use oxygen stored in the oxygen storage space completely without wasting through the contraction restoring force of the expansion member provided in the oxygen storage space of the oxygen can, so that the oxygen stored in the oxygen can is used. Can be effectively suppressed without being wasted.

In addition, since the portable oxygen mask according to the embodiment of the present invention can control the amount of oxygen supplied from the oxygen can to the mask body through a simple rotation operation of the oxygen can, the amount of oxygen discharged through the oxygen can can be easily adjusted.

In addition, the portable oxygen mask according to an embodiment of the present invention can be used by selectively combining the additional module equipped with the illumination and contamination detection sensor to the mask body, it is easy to differentiate the configuration for each product.

1 is an exploded perspective view of a portable oxygen mask according to an embodiment of the present invention.

FIG. 2 illustrates an assembled state of the portable oxygen mask of FIG. 1.

3 is a cross-sectional view illustrating a state in which the portable oxygen mask of FIG. 2 is worn on the front face of the wearer.

4 is a cross-sectional view showing the structure of an oxygen can in a portable oxygen mask according to an embodiment of the present invention.

FIG. 5 is an enlarged view of the structure of the on / off valve side of the oxygen can of FIG. 4 and illustrates an open / close valve.

6 is an enlarged view of the structure of the open / close valve side of the oxygen can of FIG. 4, and the open / close valve is moved to the bottom to show a compressed state of the oxygen regulating member.

7 is a view illustrating a process in which a connection portion of an oxygen can is coupled to a can holder of a mask body in a portable oxygen mask according to an embodiment of the present invention, wherein a guide protrusion of the connection portion enters a sliding guide groove of the can holder. It shows the state.

8 shows a state in which the guide projection is guided to the end of the sliding guide groove in the state of Figure 7 open the valve.

FIG. 9 shows a state in which the oxygen can is rotated in the state of FIG. 8 and the guide protrusion is guided to the rotation guide groove.

FIG. 10 is a view illustrating an internal structure of a connection part of an oxygen can in the state of FIG. 9, and shows a state in which an on / off valve is opened larger than that of FIG. 8.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the spirit of the present invention to those skilled in the art. The present invention is not limited to the embodiments presented herein but may be embodied in other forms. The drawings may omit illustrations of parts not related to the description in order to clarify the present invention, and may be exaggerated to some extent in order to facilitate understanding.

As shown in FIGS. 1 to 3, the portable oxygen mask 1 according to an embodiment of the present invention covers the nose 2a and the mouth 2b of the wearer's face 2 in a blocked state from the outside. The mask body 10 is provided to cover and the oxygen can 20 is provided to form a body to the mask body 10 to supply oxygen into the mask body 10.

The mask body 10 may be provided in the form of a container that can accommodate the wearer's nose (2a) and around the mouth (2b) by a material such as soft plastic or silicone.

A pair of rings 11 may be formed at both sides of the mask body 10 to connect a fixing band (not shown). The mask body 10 worn to cover the nose 2a and the mouth 2b is covered with a fixing band (not shown) connected to the ring 11 around the wearer's ear or head, and the front of the wearer's face 2. It can be fixed to. In this state, the outer portion of the mask body 10 is in close contact with the wearer's face and the mask body 10 is maintained in a blocked state with the outside.

An exhaust port 12 may be provided at the front center portion of the mask body 10 to prevent external air from flowing into the mask body 10 while exhaling the wearer's spit during the breathing process to be discharged to the outside of the mask body 10. have. The exhaust port 12 may be implemented in the form of a conventional check valve.

Both sides of the mask body 10 may be provided with a filter 13 for filtering the outside air introduced into the mask body 10 when the wearer inhales during the breathing process. The filter 13 may be provided to include solid oxygen capable of providing oxygen in the air that passes while performing the air filtering function. The mounting holes 14 may be machined on both sides of the mask body 10 so that the filter 13 which has reached the end of its life, and the filter 13 is detachably coupled to the mounting holes 14 to prevent inhalation of the wearer. It can be made easier.

A can holder 15 for installing the oxygen can 20 may be provided at an inner bottom of the mask body 10. The can holder 15 is provided in a cylindrical shape open downward, so that the upper portion thereof is positioned under the wearer's nose 2b while the portable oxygen mask 1 is installed on the front of the wearer's face 2. It can be provided integrally.

An upper portion of the can holder 15 may be provided with a through hole 15a for supplying oxygen supplied through the oxygen can 20 into the mask body 10 outside the can holder 15. Therefore, when oxygen is discharged from the oxygen can 20 while the oxygen can 20 is connected to the mask body 10 through the can holder 15, the oxygen discharged to the can holder 15 is passed through the through hole 15a. The mask body 10 is guided inside, and the wearer inhales the fresh oxygen to perform a safe breathing action.

In addition, an additional module 16 provided with an illumination 16a for irradiating light and a pollution detection sensor 16b for detecting a degree of contamination in the air is detachably attached to the front of the mask body 10 above the exhaust port 12. Can be combined.

The lighting 16a may be used to secure a forward view in a dark evacuation environment or to visually notify a user of a special situation.

And the pollution detection sensor 16b detects the degree of pollution around the user even if the user does not detect the danger by the portable oxygen mask 1 by themselves, and indicates the danger to the user. (1) can be worn. In this case, the lighting 16a may be automatically flashed to notify the user of a dangerous situation. In addition, the additional module 16 may further include a buzzer for notifying the dangerous situation by sound.

The additional module 16 allows the specification of the portable oxygen mask 1 to be changed depending on whether it is adopted, so that the configuration of the portable oxygen mask 1 can be easily differentiated for each model.

The illumination 16a may be provided as an LED, and the pollution detection sensor 16b may be used in various forms for measuring the concentration of gas or foreign matter which causes pollution of air such as carbon monoxide or fine dust. . The additional module 16 may further include a battery 16c as a power source for driving the illumination 16a and the pollution detection sensor 16b.

And the mask body 10 may be provided with a coupling portion 17 for coupling the additional module 16, the additional module 16 has an insertion groove (16d) provided in the rear bottom on the coupling portion 17 top As the fitting method is coupled, the mask body 10 may be assembled in a detachable state.

The front surface of the coupling portion 17 may be provided with a contact 17a for connecting to the additional module 16, the upper portion of the coupling portion 17 is connected to the substrate (not shown) embedded in the coupling portion 17 USB terminal 17b may be installed.

The substrate (not shown) and the USB terminal 17b may be used for inputting operation information of the additional module 16 or outputting an operation history of the stored additional module 16.

Meanwhile, as shown in FIGS. 4 and 5, the oxygen can 20 includes a body part 30 forming an oxygen storage space 31 for oxygen storage, an oxygen storage space 31, and an oxygen can ( 20) It is provided with a connecting portion 40 extending from the body portion 30 so that the oxygen passage 41 for communicating with the outside is formed therein.

The oxygen can 20 as described above forms a body with the mask body 10 as the connection part 40 is detachably coupled to the can holder 15 of the mask body 10 in a rotatable state.

The oxygen can 20 stores oxygen injected through the oxygen passage 41 from the outside in a state stored in the oxygen storage space 31, and oxygen stored in the oxygen storage space 31 is stored in the portable oxygen mask 1. In the process of use is supplied into the mask body 10 through the oxygen passage (41). The oxygen passage 41 is provided with an open / close valve 50 to interrupt the flow of oxygen through the oxygen passage 41.

Therefore, when filling the oxygen into the first oxygen storage space 31, the oxygen is injected into the oxygen storage space 31 from an external oxygen tank (not shown) through the oxygen passage 41 in the state where the open / close valve 50 is opened. Oxygen filled in the oxygen storage space 31 is supplied into the mask body 10 during the use of the portable oxygen mask 1 is used for the user's breathing.

In the oxygen can 20 as described above, the oxygen storage space 31 is provided with an expansion member 60 for using the oxygen filled therein without leaving more intact.

The expansion member 60 may include a rubber balloon 61 in which the inlet portion 63 is fixed to the oxygen passage 41 so that the body portion 62 faces the center of the oxygen storage space 31.

The expansion member 60 is elastically expanded by the injection pressure of oxygen injected into the oxygen storage space 31, the expansion member 60 in this state is the oxygen passage 41 through the contraction restoring force To the side. Therefore, the oxygen filled in the oxygen storage space 31 is not left in the oxygen storage space 31 by the contraction restoring force of the expansion member 60 can be completely discharged to the outside to be used.

A fixing ring 71 and a hollow fixing nozzle 72 may be installed at the bottom of the oxygen passage 41 to install the expansion member 60. The expansion member 60 is the oxygen can 20 in the state in which the inlet portion 63 outside and the inside is fitted between the inner circumference of the fixing ring 71 and the lower outer circumference of the fixing nozzle 72 inserted into the fixing ring 71. It can be fixed inside. At this time, the body portion 62 in a state before expansion because no oxygen is injected may be positioned inside the bottom of the oxygen passage 41 or above the oxygen storage space 31 toward the oxygen passage 41.

A first catching jaw 41a may be provided at a lower portion of the upper passage 41 so that the bottom of the fixing ring 71 is supported.

The on-off valve 50 has an oxygen outlet 52a and a valve body 51 coupled to the oxygen passage 41 and an opening and closing member coupled to the valve body 51 to open and close the oxygen outlet 52a ( 54 may be installed on the upper oxygen passage 41 of the fixed nozzle 72.

The valve body 51 is formed by coupling the hollow upper body 52 and the lower body 53 to each other, and the oxygen outlet 52a may be formed at the center of the upper body 52.

Reference numerals

50a and 50b denote O-rings for sealing between the valve body 51 and the oxygen passage 41 and between the opening and closing member 54 and the valve body 51.

The oxygen outlet 52a may be formed in a cylindrical shape having a larger diameter toward the bottom thereof, and may have a circumferential surface inclined outward from the bottom.

The opening / closing member 54 is formed in a wedge shape having a lower diameter increased in comparison with the upper portion so as to correspond to the shape of the oxygen outlet 52a, and the opening and closing portion 54a having a tapered surface 54b on an outer surface thereof, and a bottom portion of the opening / closing portion 54a. It may be provided to have an extended support portion 54c.

The opening and closing member 54 is coupled to the oxygen outlet 52a so that the opening and closing portion 54a is movable downward, and elastically supports the opening and closing member 54 upward between the upper body 52 and the lower body 53. An elastic member 55 may be provided. The elastic member 55 may be provided in the form of a compression spring.

Therefore, the opening and closing member 50 is pressed upward through the elastic member 55 to close the oxygen outlet 52a in a state in which the tapered surface 54b is in close contact with the oxygen outlet 52a, and the opening and closing member in this state is When the pressure 54 is pressed downward by the pressing part 15b to be described later installed in the can holder 15, the tapered surface 54b is spaced apart from the oxygen outlet 52a while compressing the elastic member 55. The oxygen outlet 52a is opened while being pressed to the bottom.

5 shows a structure in which the oxygen outlet 52a is opened. Due to the inclined structure of the tapered surface 54b and the oxygen outlet 52a, the opening size of the oxygen outlet 52a can be increased rapidly compared to the moving distance of the opening / closing member 54 moving downward. Accordingly, the opening and closing valve 50 increases the opening degree of the oxygen passage 41 according to the degree of pressing of the opening and closing member 54.

In addition, the oxygen passage 41 between the open / close valve 50 and the fixed nozzle 72 may be provided with an oxygen regulating member 80 for adjusting the amount of oxygen supplied from the oxygen storage space 31 toward the open / close valve 50. have.

The on-off valve 50 is screwed to the oxygen passage 41 to be provided to move the oxygen passage 41 along its longitudinal direction in the rotational direction, and the oxygen regulating member 80 of the on / off valve 50 It is possible to adjust the amount of oxygen that is compressed by the movement to pass through or around it.

Therefore, the portable oxygen mask 1 according to the present embodiment is the amount of oxygen supplied from the oxygen storage space 31 into the mask body 10, the degree of compression of the oxygen regulating member 80 and the opening and closing member 54 Since the opening and closing portion 54a can be adjusted over the second degree, the discharge pressure of oxygen and the discharge time can be more finely and precisely adjusted.

A female screw 41b is processed in the upper inner diameter of the oxygen passage 41 to move the on / off valve 50 up and down of the oxygen passage 41, and a female screw 41b is disposed on the outer circumference of the upper body 52 of the valve body 51. The male screw 52b may be machined to be screwed into). A second catching jaw 41c may be provided on the inner wall of the oxygen passage 41 to the bottom of the female screw 41b to limit the maximum lowering operation of the valve bar 51.

Oxygen regulating member 80 may be provided in a ring shape through a material that is easy to compress and restore, such as a compression sponge, a fixing rivet for fixing the oxygen regulating member 80 in the upper inside of the fixed nozzle (72) 90) can be installed.

The fixed rivet 90 has a lower support portion 91 and a shaft portion 92 extending upwardly in the center of the support portion 91, and the ring-shaped oxygen regulating member 80 is fitted to the shaft portion 92. The bottom surface may be mounted to the fixed rivet 90 so as to be supported by the support 91.

The shaft portion 92 of the fixed rivet 90 in which the oxygen regulating member 80 is inserted may be slidably inserted into the hollow of the lower body 53 of the valve body 51.

Accordingly, when the on-off valve 50 is moved to the bottom, as shown in FIG. 6, the oxygen regulating member 90 supports the lower body 53 of the valve body 51 and the support part of the fixing rivet 90. 91 is elastically pressed between the compressed to reduce the amount of oxygen passing through the oxygen passage 41 between the lower body 53 and the support 91, on the contrary, when the on-off valve 50 is moved to the top, oxygen control The member 90 increases the amount of oxygen passing between the lower body 53 and the support 91 while being restored to its original state.

A hollow control ring 100 in which an adjustment groove 101 is formed may be connected to an upper portion of the upper body 52 of the valve body 51. Accordingly, before the user uses the portable oxygen mask 1, the user inserts a tool such as a driver into the adjustment groove 101 to rotate the valve 50 to operate the compression degree of the oxygen regulating member 80 to store oxygen. The amount of oxygen discharged from the space 31 toward the on / off valve 50 can be adjusted.

The oxygen can 20 configured as described above is assembled by being inserted into the can holder 15 of the mask body 10 in a rotatable state, and the oxygen can 20 mounted on the can holder 15 has an opening / closing valve according to its rotational position. The amount of oxygen supplied to the mask body 10 can be adjusted through 50.

As shown in Figure 7 to 10, to guide the assembly operation of the connection portion 40 of the oxygen can 20 is assembled to the can holder 15, guide the coupling of the connecting portion 40 in the inner circumference of the can holder 15 The guide groove 15c may be provided, and the connecting portion 40 may be provided with a guide protrusion 42 protruding laterally to fit into the guide groove 15c.

The guide grooves 15c are formed in pairs on both sides of the inner circumference of the can holder 15, and the guide protrusions 42 may be provided in pairs on both sides of the upper portion of the connection part 40 to correspond thereto.

In addition, a pressing part 15b for pressing the opening / closing member 54 of the oxygen can 20 may be provided inside the upper center of the can holder 15 in which the through hole 15a is formed.

The through hole 15a may be formed in plural along the circumference of the pressing part 15b, and the pressing part 15b may be provided integrally with the can holder 15 when the can holder 15 is formed. O-ring 120 is installed in the can holder 15 around the pressing portion 15b to increase the sealing efficiency around the through hole 15a while elastically supporting the connecting portion 40 entering the can holder 15.

The guide groove 15c is formed in the sliding guide groove 15d of the lower side formed in the up and down direction to guide the sliding operation of the connecting portion 40 to slidably enter into the can holder 15 and the pressing portion 15b. It includes a rotation guide groove (15e) inclined upwardly in the circumferential direction from the sliding guide groove (15d) for guiding the rotation operation of the connecting portion 40 to rotate so that the pressing degree of the pressing member 54 is pressed down to be adjusted. can do.

Therefore, when assembling the oxygen can 20 to the mask body 10 to use the portable oxygen mask 1, as shown in FIG. 7, the guide protrusion 42 first enters the sliding guide groove 15d. The oxygen can 20 is pushed upward in the state. Accordingly, the oxygen can 20 enters the can holder 15 while the guide protrusion 42 is guided upward along the sliding guide groove 15d.

As shown in FIG. 8, the opening / closing member 54 of the opening / closing valve 50 is pressed by the pressing part 15b from the time when the guide protrusion 42 moves to the upper end of the sliding guide groove 15d to release the oxygen outlet 52a. ) May be opened, and oxygen discharged from the oxygen can 20 may be supplied into the mask body 10 through the through hole 15a.

And by rotating the oxygen can 20 in the state where the guide protrusion 42 is caught at the upper end of the sliding guide groove (15d), as shown in Figure 9, the guide protrusion 42 to the rotary guide groove (15e) You can be guided.

Accordingly, the oxygen can 20 moves upward along the inclination of the rotation guide groove 15e inclined upward by the guide protrusion 42 moving along the rotation guide groove 15e. The pressing degree of the opening / closing member 54 pressed by the pressing part 15b by the raising operation of the oxygen can 20 which rises along 15e) becomes large gradually.

As shown in FIG. 10, at this time, the opening / closing member 54 is pressed deeper and deeper by the pressing part 15b, and thus the separation distance between the opening / closing member 54 and the oxygen outlet 52a is increased. The amount of oxygen released to 52a) is also increased.

At this time, the opening size of the oxygen outlet 52a is increased according to the pressing degree of the opening / closing portion 54a pressed by the pressing portion 15b, and the pressing degree of the opening / closing portion 54a raises the oxygen can 20. It is determined according to the position of the guide protrusion 42 in the 15e), the rotation guide groove (15e) has a plurality of locking grooves (15f) for causing the step of engaging the guide protrusion 42 in the rotation guide groove (15e) It may be provided along the formation direction of. In this embodiment, the locking groove 15f is composed of three spaced apart from each other.

Therefore, the user of the portable oxygen mask 1 is the position of the locking groove (15f) that is caught by the guide projection 42 in the process of rotating the oxygen can 20 so that the guide projection 42 rises along the rotation guide groove (15e). By selecting and stopping the rotation of the oxygen can 20, it is possible to freely fix the oxygen can 20 in a plurality of positions different from each other the opening size of the oxygen outlet (52a).

Claims

In a portable oxygen mask having a mask body provided to cover the face and nose around the mouth in a blocked state and an oxygen can mounted to the mask body to supply oxygen into the mask body,

The oxygen can has an oxygen storage space for storing oxygen, an oxygen passage communicating with the outside of the oxygen storage space, an opening / closing valve for regulating the flow of oxygen through the oxygen passage, and the oxygen injected into the oxygen storage space. A portable oxygen mask comprising an expansion member provided in the oxygen storage space to elastically expand by the injection pressure to press the oxygen inside the oxygen passage through the contraction restoring force.
The method of claim 1,

The expansion member is a portable oxygen mask including a rubber balloon inlet portion is fixed to the oxygen passage so that the body portion toward the center of the oxygen storage space.
The method of claim 1,

The oxygen can is rotatably coupled to the oxygen mask is a portable oxygen mask provided to adjust the amount of oxygen supplied to the mask body in accordance with the rotation position.
The method of claim 3, wherein

The oxygen can further includes a body portion in which an inner space forms the oxygen storage space, and a connection portion extending from the body portion so that the oxygen passage is formed therein.

The mask body is provided with a can holder to be detachably fitted in the rotatable state,

In the inner circumference of the can holder is provided with a guide groove for guiding the coupling of the connecting portion, the connecting portion is provided with a guide protrusion protruding laterally to be fitted to the guide groove,

The opening and closing valve includes an opening and closing member for increasing the opening degree of the oxygen passage in accordance with the degree of pressing,

The can holder is provided with a pressing portion for pressing the opening and closing member,

The guide groove is a sliding guide groove formed in the vertical direction to guide the sliding operation of the connecting portion slidably entering into the can holder and the rotation to adjust the degree of pressing of the opening and closing member pressed by the pressing portion Portable oxygen mask comprising a rotation guide groove inclined in the circumferential direction from the sliding guide groove to guide the rotation operation of the connecting portion.
The method of claim 4, wherein

Portable oxygen mask provided in the rotation guide groove is provided with a plurality of locking grooves to cause the locking of the guide projections in stages.
The method of claim 1,

The oxygen passage is provided with an oxygen control member for adjusting the amount of oxygen supplied from the oxygen storage space toward the on-off valve.
The method of claim 6,

The on-off valve is screwed to the oxygen passage is provided to move along the oxygen passage in the rotational direction,

The oxygen regulating member is a portable oxygen mask provided to adjust the amount of oxygen passing through the surroundings by the movement of the on-off valve.
The method of claim 1,

The mask body has a portable oxygen mask detachably coupled to the illumination module for irradiating light and the additional module is installed with a pollution sensor for detecting the pollution degree in the air.