Technical Field

The present invention relates to a mask.

Background Art

With recent industrialization, as various air pollution problems have occurred, various harmful substances are included in the air. These harmful substances may include not only various fumes or fine dust, which has recently become a serious social issue, but also pollen and various bacterial substances that cause allergies and so on.

On the other hand, when the harmful substances permeate into the respiratory tract of the human body, the harmful substances may cause various respiratory diseases, resulting in serious problems. In particular, when the air quality is poor, like as a yellow dust phenomenon, it is necessary to wear a mask, and a user who is likely to be exposed to a polluted air environment for a long time in a place with a lot of fine dust wears a mask to prevent respiratory diseases.

In general, the mask is in close contact with a user’s face, thereby preventing germs, dust, or the like in the atmosphere from permeating into user’s nose and mouth. Particularly, a mask equipped with a filter on the mask may allow a user to inhale air introduced through the filter. In the mask equipped with such a filter, a face cover part is made of a non-permeable material, and when the user inhales air, external air is introduced into the face cover part by passing through the filter, thereby assisting the respiration of the user.

Technical Problem

In the case of a mask equipped with a conventional filter, when the filter has been used for a long period of time, the performance of the filter for filtering pollutants, bacteria and fine dust is deteriorated. In this way, if the filter performance is deteriorated, it is not possible to effectively prevent pollutants, bacteria and fine dust from being introduced into the respiratory tract, so that there is a need to replace the filter in a timely manner. However, when the filter is frequently replaced even though the life of the filter is left, a lot of costs are required, and when the filter is replaced after the life of the filter is over, a mask that has a lost function is used. As described above, if the user knows in advance a replacement timing of the filter by notifying the user of the life of the filter, the filter can be replaced at an appropriate time, and thus, there is a need for a device that can inform the user of the life of the filter.

Therefore, the embodiments of the present invention have been invented based on the above background, and an object of the present invention is to provide a mask capable of notifying a life or replacement timing of a filter to a user in a mask equipped with a filter.

Technical Solution

According to an aspect of the present invention, there is provided a mask for filtering air flowing inside, the mask including: a face cover part provided to be wearable on a user’s face; a respiration assist device capable of being coupled to the face cover part; one or more sensor units provided on at least one of the face cover part and the respiration assist device; and a calculation unit configured to calculate at least one of a use time and a remaining life time of the filter based on data measured from the one or more sensor units.

Advantageous Effects

According to the embodiments of the present invention, in a mask equipped with a filter, there is an effect of being able to inform the user of the life or replacement timing of the filter.

Description of Drawings

FIG. 1 is a perspective view of a mask according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the mask of FIG. 1.

FIG. 3 is an exploded perspective view of a respiration assist device of FIG. 1.

FIG. 4 is a rear perspective view of the respiration assist device of FIG. 1.

FIG. 5 is a view illustrating a state in which the respiration assist device is coupled to a face cover part of FIG. 1.

FIG. 6 is a cross-sectional view of FIG. 1 taken along line A-A\

FIG. 7 is an enlarged diagram of part B of FIG. 2.

FIG. 8 is a cross-sectional view of FIG. 4 taken along line C-C\

FIG. 9 is a bottom perspective view of the face cover part of FIG. 1.

FIG. 10 is a cross-sectional view of FIG. 9 taken along line D-D’. FIG. 11 is a view showing a state in which an opening/closing member is spaced apart from a junction member in FIG. 9.

FIG. 12 is a view schematically illustrating a relationship between a sensor unit, a display unit, an operation unit, and a storage unit according to a first embodiment of the present invention.

Modes for the Invention

Hereinafter, specific embodiments for implementing the spirit of the present invention will be described in detail with reference to the accompanying drawings.

Moreover, in describing the present invention, a detailed description of related known configurations or functions will be omitted when it is determined to make the gist of the present invention blur.

In addition, when it is mentioned that a certain component is ‘connected’, ‘supported’, ‘coupled’, or ‘flows’ to the other component, it should be understood that the component may be connected, supported, coupled, or flow directly to the other component, but other components may also exist therebetween.

Terms used in the present specification are used only to describe specific embodiments, and are not intended to limit the present invention. A singular form may include a plural form unless otherwise explicitly meant in the context.

In addition, in this specification, the expressions of an upper side, a lower side, a side surface, and the like are described based on the illustration in the drawings, and it is noted in advance that the expressions may be varied when a direction of the corresponding object is changed. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated, and the size of each component does not entirely reflect an actual size.

In addition, terms including ordinal numbers, such as the first and the second, may be used for describing various components, but the corresponding components are not limited by these terms. The terms are used only to distinguish one component from other components.

The term “including” used in the specification means that a specific feature, region, integer, step, operation, element and/or component is embodied, but presence or addition of other specific features, regions, integers, steps, operations, elements, components, and/or groups is not excluded. Hereinafter, a specific configuration of a mask 1 including a respiration assist device 100 according to an embodiment of the present invention will be described with reference to the drawings.

Hereinafter, referring to FIG. 1, the mask 1 according to an embodiment of the present invention may be used in close contact with a user’s face, and prevent pollutants, germs, dust, etc. in the air from permeating into user’s nose and mouth. In addition, the mask 1 may assist the respiration of the user wearing the mask 1. Accordingly, the user may comfortably respire (inhale) even while wearing the mask 1. The mask 1 may include a respiration assist device 100, a face cover part 200, and a filter 300.

Referring to FIGS. 2 and 3, the respiration assist device 100 may assist the respiration of a user wearing the mask 1. Such a respiration assist device 100 may provide a passage through which air passing through the filter 300 flows into the face cover part 200, and the respiration assist device 100 may allow the air passing through the filter 300 to flow toward the face cover part 200. The respiration assist device 100 may include one side selectively coupled with the face cover part 200 and the other side selectively coupled with the filter 300. The respiration assist device 100 may include a body part 110, a spacer 120, and a fan unit 130.

The body part 110 may support the spacer 120 and the fan unit 130. The body part 110 may be connected to the face cover part 200 and the filter 300 between the face cover part 200 and the filter 300. In other words, one side of the body part 110 may be coupled with the face cover part 200 through a mask connector 111 to be described below, and the other side of the body part 110 may be coupled with the filter 300 through a filter fastening part 124 to be described below. In addition, the body part 110 may be disposed between a rotation center of blades 132 to be described below and the face cover part 200.

Referring to FIG. 4, the mask connector 111 to be selectively coupled with the face cover part 200 may be provided on one side surface of the body part 110, and the body part 110 may be selectively coupled with the face cover part 200 through the mask connector 111. The mask connector 111 may be supported on one surface of the body part 110. In addition, a connector groove 111a into which a port protrusion 231 of an intake port 230 to be described below may be inserted may be formed in the mask connector 111. The port protrusion 231 may be inserted into the connector groove 111a, and the shape of the connector groove 111a may be formed to correspond to the shape of the port protrusion 231. When the mask connector 111 and the intake port 230 are coupled with each other, the fan unit 130 may discharge air from an air passage 112 in a direction passing through the intake port 230 and the mask connector 111.

Hereinafter, a process of coupling the body part 110 to the face cover part 200 in order to mount the respiration assist device 100 on the face cover part 200 will be described in detail with reference to FIGS. 5 and 6. First, the body part 110 is positioned in the intake port 230 so that the port protrusion 231 is placed at a position corresponding to the connector groove 111a. The intake port 230 is inserted into an inner direction (e.g., a left side of FIG. 6) of the body part 110 so that the port protrusion 231 passes through the connector groove 11 la. At this time, when the body part 110 is rotated at a predetermined angle with respect to the face cover part 200 in one direction (for example, clockwise in FIG. 5), the port protrusion 231 may be supported on the inside of the mask connector 111. As such, when the port protrusion 231 is supported by the mask connector 111, the respiration assist device 100 may be mounted on the face cover part 200. In this way, when the mask connector 111 and the intake port 230 are coupled with each other, the mask connector 111 may communicate with the intake port 230. In addition, air introduced into the body part 110 may flow into the face cover part 200 through the mask connector 111 and the intake port 230.

On the other hand, in order to remove the respiration assist device 100 from the face cover part 200, the body part 110 is rotated at a predetermined angle with respect to the face cover part 200 in the other direction (e.g., counterclockwise in FIG. 5) so that the port protrusion 231 is placed at a position corresponding to the connector groove 11 la. At this time, when the port protrusion 231 is placed in a position corresponding to the connector groove 11 la, the body part 110 is moved so that the port protrusion 231 passes through the connector groove 11 la to move in an outward direction (e.g., a right side of FIG. 6) of the body part 110. In addition, when the port protrusion 231 is separated from the mask connector 111, the respiration assist device 100 may be removed from the face cover part 200.

As such, the body part 110 may be coupled with the face cover part 200 by coupling the mask connector 111 with the intake port 230. In addition, when the intake port 230 is coupled to the mask connector 111, the mask connector 111 and the intake port 230 may be connected to communicate with each other. Accordingly, the air introduced into the body part 110 may flow into the face cover part 200 through the mask connector 111 and the intake port 230.

Meanwhile, the air passage 112 through which the air passing through the filter 300 flows into the body part 110 may be formed inside the body part 110. The air passage 112 may be formed through the body part 110 and may be formed to communicate with the mask connector 111. In addition, the air passage 112 may communicate with an inlet 123 to be described below. Accordingly, the air passing through the filter 300 may flow into the air passage 112 through the inlet 123. In addition, at least a part of the fan unit 130 may be disposed inside the air passage 112. As such, since the fan unit 130 is disposed inside the air passage 112, the air introduced into the air passage 112 may flow into the body part 110 by the fan unit 130. The air passage 112 may be opened to face the filter 300 or face the face of the user wearing the mask 1. In addition, the air passage 112 may have a circular cross- section.

Referring back to FIGS. 2 and 6 together with FIG. 7, the spacer 120 may be supported on one side of the body part 110 and may be configured to be fastened to the filter 300. When the spacer 120 is fastened to the filter 300, at least a part of the spacer 120 is inserted into the filter 300. In addition, the spacer 120 may be inserted into any one of a first filter layer 310 and a second filter layer 320 to separate the first filter layer 310 and the second filter layer 320 to be described below from each other. For example, the spacer 120 may be inserted through the second filter layer 320 to support the first filter layer 310, so as to separate the first filter layer 310 and the second filter layer 320 from each other.

In addition, the spacer 120 may maintain a space in the filter 300 to be described below. For example, the air passing through the filter 300 by the user’s respiration (inhalation) and remaining in the filter 300 for a predetermined time flows to the face cover part 200 through the respiration assist device 100. If the mask 1 does not have the spacer 120, the air in the filter 300 is discharged to the respiration assist device 100, so that the first filter layer 310 and the second filter layer 320 can be in close contact with each other. At this time, when the first filter layer 310 and the second filter layer 320 are in close contact with each other, the respiration of the user may be disturbed. However, the spacer 120 is inserted into any one of the first filter layer 310 and the second filter layer 320 to separate the first filter layer 310 and the second filter layer 320 from each other, so that it is possible to prevent the first filter layer 310 from being in close contact with the second filter layer 320. Accordingly, a predetermined space in the filter 300 may be maintained by the spacer 120 without removal, and the spacer 120 may prevent the respiration of the user from being disturbed by the close contact between the first filter layer 310 and the second filter layer 320.

In addition, the spacer 120 may be configured to be removable from the body part 110. The spacer 120 may include a supporter 121, a connection part 122, and a filter fastening part 124.

Referring back to FIG. 6, one or more supporters 121 may be provided, and may support the first filter layer to prevent the first filter layer 310 and the second filter layer 320 from coming into close contact with each other. At least some of the supporters 121 may be inserted into the filter 300 when the filter fastening part 124 is fastened to the filter 300. In addition, one or more supporters 121 are inserted through the second filter layer 320 to support the first filter layer 310, so as to separate the first filter layer 310 from the second filter layer 320. For example, one or more supporters 121 may be formed to protrude from the filter fastening part 124 in a direction (e.g., the left side of FIG. 6) inserted into the filter 300.

In addition, one or more supporters 121 may include a plurality of supporters 121, and when the plurality of supporters 121 are provided, ends of the plurality of supporters 121 may be connected to the connection part 122. For example, one end of the supporter 121 may be connected to the filter fastening part 124, and the other end of the supporter 121 may be connected to the connection part 122. In addition, the plurality of supporters 121 may include a first supporter 121a and a second supporter 121b. The first supporter 121a and the second supporter 12 lb may be spaced apart from each other to provide a space for the fan unit 130 to be disposed. As such, the fan unit 130 may be interposed between the first supporter 121a and the second supporter 12 lb, and may be supported by the first supporter 121a and the second supporter 121b. In addition, a pair of the first supporter 121a and the second supporter 121b may be further provided respectively. On the other hand, as illustrated in FIG. 7, at least some of the plurality of supporters 121 may be blocked by the fan unit 130, and at least others of the plurality of supporters 121 are opened to form the inlet 123 to be described below.

The connection part 122 may prevent the first filter layer 310 and the second filter layer 320 from being in close contact with each other by separating the first filter layer 310 from the second filter layer 320. In other words, when one or more supporters 121 are inserted through the second filter layer 320, the connection part 122 is spaced apart from the second filter layer 320 to prevent the first filter layer 310 and the second filter layer 320 from coming into close contact with each other. For example, the connection part 100 may be in close contact with the first filter layer 310 when the spacer 120 is inserted through the second filter layer 320. In addition, the connection part 122 may cover one surface of the fan unit 130.

The connection part 122 may be supported on the supporter 121 to be spaced apart from the filter fastening part 124 by a predetermined distance. In addition, the connection part 122 may be supported on the supporter 121 to face the inner surface of the filter 100. For example, the connection part 122 may contact the inner surface of the filter 100.

In addition, the connection part 122 may have a plate shape and may have a smooth surface. When the spacer 120 is inserted into the filter 300 and the filter 300 rotates with respect to the respiration assist device 100 for fastening the filter 300, the friction between the end of the supporter 121 and the inner surface of the filter 300 may be reduced.

Meanwhile, referring to FIGS. 3, 6 and 7, the inlet 123 may be formed in the spacer 120. The air passing through the filter 300 is introduced into the spacer 120 through the inlet 123, and the air introduced into the spacer 120 may flow into the air passage 112 through the fan unit 130. The inlet 123 may communicate with the inside of the filter 300 and may communicate with the air passage 112. In addition, the air passing through the inlet 123 may flow toward the fan unit 130 disposed inside the air passage 112 through the filter fastening part 124, and may flow into the body part 100 by the fan unit 130. The inlet 123 may be formed between at least some of the plurality of supporters 121. In other words, the inlet 123 may be formed between at least some of the plurality of supporters 121 that are not blocked by the fan unit 130. Meanwhile, the air flowing into the inlet 123 through the filter 300 may flow into the body part 110 through the inlet 123 and the air passage 112 even when the fan unit 130 is not driven. In addition, a plurality of inlets 123 may be provided.

The inlets 123 may include a first inlet 123 a and a second inlet 123b. As such, the first inlet 123a and the second inlet 123b are formed on both sides of the spacer 120, so that the air passing through the filter 300 may flow into the body part 100 from both sides of the spacer 120 (for example, the upper and lower sides of FIG. 6). In addition, a part of the air passing through the filter 300 flows to the fan unit 130 through the first inlet 123a, and the other part of the air passing through the filter 300 flows to the fan unit 130 through the second inlet 123b. For example, the first inlet 123a and the second inlet 123b may be formed between at least some of the plurality of supporters 121 and may be formed symmetrically to each other from the center of the spacer 120.

Referring back to FIG. 6, the filter fastening part 124 may fasten the filter 300 and the respiration assist device 100. The filter fastening part 124 may have a shape that may be inserted and coupled to a fixture 330 of the filter 300. Accordingly, the filter fastening part 124 may be coupled with the fixture 330 of the filter 300, thereby coupling the spacer 120 and the filter 300 to each other. One side of the filter fastening part 124 may be supported by the body part 110, and the other side of the filter fastening part 124 may support the plurality of supporters 121. In addition, the filter fastening part 124 may be removed from the body part 110. Accordingly, the filter fastening part 124 is removed from the body part 110, so that the spacer 120 may be selectively coupled to the body part 110.

As such, while the filter 300 is coupled to the filter fastening part 124, the user may use integrally the respiration assist device 100, the face cover part 200, and the filter 300 by coupling the body part 110 to the intake port 230. However, the shape of the filter fastening part 124 may be provided the same as the shape of the intake port 230. Therefore, the user can directly couple the filter 300 to the face cover part 200, and is able to integrally use the filter 300 and the face cover part 200 without the respiration assist device 100.

Referring to FIG. 8, the fan unit 130 may allow the air introduced to the inlet 123 through the filter 300 to flow into the body part 100. A part of the fan unit 130 may be disposed inside the air passage 112, and the air introduced into the air passage 112 may flow into the body part 100. For example, the fan unit 130 discharges the air in a direction opposite to the face of the user wearing the mask 1, but may receive the air in a direction perpendicular to the direction of discharging the air. In other words, a flowing direction of the air in the filter 300 and a flowing direction of the air discharged by the fan unit 130 may be vertical to each other. In addition, the fan unit 130 may be disposed so that a part thereof is placed in the air passage 112. Meanwhile, a part of the fan unit 130 may be inserted into the filter 300 and may be disposed inside the filter 300. The other part of the fan unit 130 may be disposed inside the filter 300 in a direction perpendicular to the direction in which the filter 300 extends (e.g., the vertical direction in FIG. 6). The fan unit 130 may be supported by the body part 100 and the spacer 120. In addition, the fan unit 130 may be disposed inside the spacer 120. The fan unit 130 may be surrounded by the plurality of supporters 121 and the connection part 122. Since at least a part of the fan unit 130 is disposed inside a space surrounded by the plurality of supporters 121 and the connection part 122 to prevent interference between the fan unit 130 and the filter 300. Accordingly, the fan unit 130 is disposed in the filter 300 to allow the air passing through the inlet 123 from the filter 300 to flow into the body part 110 without interference from the filter 300.

In addition, when the fan unit 130 is driven, a higher flow rate of air may flow into the body part 110 than the flow rate of air flowing into the body part 110 through the air passage 112 when the fan unit 130 is not driven. As such, the fan unit 130 may allow a larger amount of air to flow into the face cover part 200, thereby assisting the respiration of the user. The fan unit 130 may include a fan body 131, blades 132, and a rotation shaft 133.

The fan body 131 may support at least one of the blades 132 and the rotation shaft 133. The fan body 131 may be disposed inside the spacer 120 and the air passage 112, and may be supported by at least one of the plurality of supporters 121 and the connection part 122. In addition, the fan unit 130 may be fixed to the spacer 120 by interposing the fan body 131 between the plurality of supporters 121 of the spacer 120. In addition, a part of the fan body 131 may be disposed between at least some of the plurality of supporters 121, and may block at least some of the plurality of supporters 121. In addition, the fan body 131 may guide the air so that the flow of the air by the blades 132 faces the inside of the mask 1. In other words, the air may be guided between the face cover part 200 and the user’s face by the fan body 131.

The blades 132 are provided to rotate along a predetermined rotation path, and may allow air introduced into the spacer 120 through the inlet 123 to flow into the body part 110. The blades 132 rotate with respect to a predetermined rotational shaft 133 extending in one direction, thereby allowing air to flow to pass through the air passage 112. In addition, the blades 132 may discharge the air in a direction perpendicular to the direction in which the rotation shaft 133 extends. The fan unit 130 may be disposed such that the rotation shaft 133 is placed at a position spaced apart from the face cover part 200 by a predetermined distance. For example, the fan unit 130 may be disposed so that the rotation shaft 133 of the blades 132 is placed outside the air passage 112, and in this case, the rotation center of the blades 132 may be placed in the filter 300. The blades 132 may be disposed inside the fan body 131.

Meanwhile, one or more blades 132 may be provided. While one or more blades 132 are rotated, each blade 132 may rotate so as to be closer to the air passage 112 in a part of the rotation path and to be far away from the air passage 112 in the other part of the rotation path. As such, the one or more blades 132 rotate so that a part of the rotation path is closer to the air passage 112 and the other part thereof is far away from the air passage 112, thereby allowing the air to flow to pass through the air passage 112. When the plurality of blades 132 are provided, some of the plurality of blades 132 may be covered by the connection part 122. In this case, the connection part 122 may prevent the blades 132 from interfering with the inner surface of the filter 300.

These blades 132 may be arranged to extend side by side along the rotation center. In other words, the blades 132 may be oriented in a direction parallel to the rotation shaft 133. In addition, the blades 132 may be bent and extended from the center of rotation to the outside of the rotation path. The blades 132 may have a shape in which a radius of curvature at one side of the rotation center is the same as a radius of curvature at the other side of the rotation center. In other words, the blades 132 may be formed to be plane- symmetric with respect to a virtual plane passing through the center of the plurality of blades 132.

The rotation shaft 133 may support the blades 132 and may be a shaft extending along the rotation center of the blades 132. This rotation shaft 133 may extend along an axial direction. For example, the axial direction may be a direction in which the rotation shaft 133 extends in FIGS. 3 and 7. The rotation shaft 133 may be formed to extend in a direction (e.g., the vertical direction of FIG. 6) perpendicular to the direction (e.g., the right direction of FIG. 6) in which the air introduced into the spacer 120 through the inlet 123 flows into the air passage 112 on average.

Referring back to FIG. 2, the face cover part 200 may be provided to be worn on the user’s face, and may be in close contact with the user’s face to cover the user’s nose and mouth. The face cover part 200 may be made of a non-permeable material, and may have a shape corresponding to the user’s face in order to be more easily in close contact with the user’s face. In addition, a separate strap (not illustrated) may be provided on the face cover part 200 to be coupled to the user’s face. The face cover part 200 may include a junction member 210, an air inlet 220 and an intake port 230.

The junction member 210 may provide a portion to be worn on the user’s face, and may be in close contact with the user’s face to cover the user’s nose and mouth. This junction member 210 may prevent pollutants, germs and dust in the atmosphere from permeating into the user’s respiratory tract.

The air inlet 220 may provide a passage through which air is introduced into the junction member 210 from the outside of the junction member 210. The air inlet 220 may be provided on one side of the junction member 210. However, in this specification, the air inlet 220 is illustrated to be formed on one side of the face cover part 200, but this is only an example, and the air inlet 220 may be formed on both sides of the face cover part 200, and may be formed on a center line C of the face cover part 200.

The intake port 230 may provide a portion in which the respiration assist device 100 is coupled to the face cover part 200. The intake port 230 may be formed to protrude from the air inlet 220. In addition, a port protrusion 231 may be formed on the intake port 230. The port protrusion 231 may be formed to protrude from the intake port 230 and may have a shape corresponding to the shape of the connector groove 11 la. In addition, the port protrusion 231 may be inserted into the mask connector 111 through the connector groove 111a, and when the body part 110 rotates at a predetermined angle with respect to the face cover part 200, the port protrusion 231 may be supported by the mask connector 111. Accordingly, when the port protrusion 231 is supported on the mask connector 111, the respiration assist device 100 may be supported on the face cover part 200. Meanwhile, the intake port 230 may be configured to be engaged with the fixture 330 of the filter 300. Accordingly, the face cover part 200 also may be directly coupled with the filter 300 without the respiration assist device 100 by engaging the intake port 230 with the fixture 330.

Referring back to FIG. 6, the filter 300 may filter pollutants, bacteria, and dust or the like from air in the atmosphere. When the user inhales the air, the filter 300 may filter air introduced from the outside and provide the filtered air to the respiration assist device 100. In addition, the fdter 300 may be selectively coupled with the spacer 120 provided in the respiration assist device 100. The fdter 300 may include a first filter layer 310, a second filter layer 320, and a fixture 330.

The spacer 120 may be inserted into any one of the first filter layer 310 and the second filter layer 320. For example, the first filter layer 310 may be in close contact with the connection part 122, and one or more supporters 121 may be inserted through the second filter layer 320. The first filter layer 310 and the second filter layer 320 may be spaced apart from each other by the spacer 120. In other words, the spacer 120 is inserted through the second filter layer 320 and disposed between the first filter layer 310 and the second filter layer 320, so that the first filter layer 310 and the second filter layer 320 may be spaced apart from each other without being in close contact with each other.

Meanwhile, edges of the first filter layer 310 and the second filter layer 320 may be connected to each other, and the first filter layer 310 and the second filter layer 320 may be connected to each other to form a predetermined space. Air passing through any one of the first filter layer 310 and the second filter layer 320 may stay inside this space for a predetermined time.

The fixture 330 may fasten the filter 300 and the respiration assist device 100 to each other. The fixture 330 is fastened with the filter fastening part 124 of the respiration assist device 100, so that the filter 300 and the respiration assist device 100 may be coupled with each other. The fixture 330 may be supported on the second filter layer 320. In addition, the shape of the fixture 330 may be provided the same as the shape of the mask connector 111 of the body part 110. Accordingly, the fixture 330 may be coupled with the port protrusion 231 of the face cover part 200, and the filter 300 may be directly coupled to the face cover part 200 without the respiration assist device 100.

Referring back to FIG. 9, a sensor unit 400 may measure data required to calculate at least one of a use time and a remaining life time of the filter 300. In other words, the sensor unit 400 may measure data required for calculating at least one of the use time and the remaining life time of the filter 300 in the calculation unit 600 and transmit the measured data to the calculation unit 600. One or more of sensor units 400 may be provided, and may be provided on at least one of the inner and outer surfaces of the mask 1. Here, the inside of the mask 1 may include not only the inner surface of the face cover part 200, but also the inside of the respiration assist device 100, the inside of the filter 300, and the like. Accordingly, one or more sensor units 400 may be provide in at least one of the respiration assist device 100, the face cover part 200, and the filter 300.

The sensor unit 400 according to the embodiment may include a first sensor 410 and a second sensor 420 to measure a pressure, and the first sensor 410 and the second sensor 420 may be referred to as a first pressure sensor 410 and a second pressure sensor 420. Hereinafter, the first sensor 410 will be described as the first pressure sensor 410 and the second sensor 420 will be described as the second pressure sensor 420.

The first pressure sensor 410 may measure a first pressure, which is a pressure in the mask 1. For example, the first pressure may mean a pressure between the face cover part 200 and the user’s face, a pressure in the filter 300, a pressure around the fan unit 130, or the like. The first pressure sensor 410 may be provided in the mask 1, for example, inside the face cover part 200. Here, the inside of the face cover part 200 means one side of both sides of the face cover part 200 that is in close contact with the user’s face. The first pressure sensor 410 may continuously measure the pressure in the mask 1 and may transmit the measured pressure to the calculation unit 600 or a storage unit 700. As another example, the first pressure sensor 410 may be provided in the air passage 112 to measure the first pressure in the air passage 112. The first pressure sensor 410 may measure the pressure of air flowing into the face cover part 200 from the air passage 112 by the fan unit 130 inside the air passage 112.

The second pressure sensor 420 may measure a second pressure outside the mask 1. For example, the second pressure may be a pressure outside the mask 1. The second pressure sensor 420 may be provided outside the mask 1, for example, outside the face cover part 200. Here, the outside of the face cover part 200 means one side of both sides of the face cover part 200 that is not in close contact with the user’s face. As another example, the second pressure sensor 420 may be provided on the body part 110 to measure the second pressure outside the mask 1. Here, the second pressure sensor 420 may be inserted into the body part 110 or disposed inside the body part 110 as well as on an outer circumferential surface of the body part 110 so as to measure the second pressure outside the mask 1. The second pressure sensor 420 may continuously measure the pressure outside the mask 1 and may transmit the measured second pressure to the calculation unit 600 or the storage unit 700. The display unit 500 may receive and display at least one of the use time and the remaining life time of the filter 300 calculated by the calculation unit 600. The display unit 500 may receive at least one of the use time and the remaining life time of the filter 300 directly from the calculation unit 600, or from the storage unit 700. In addition, the display unit 500 may receive and display the accumulated use time of the filter 300 calculated from the calculation unit 600. The display unit 500 may be provided on one side of the face cover part 200.

Referring to FIG. 12, the calculation unit 600 may calculate at least one of the use time of the filter 300, and the accumulated use time and the remaining life time of the filter 300, based on the data measured from the one or more sensor units 400. For example, the data measured from the sensor unit 400 may be information for calculating the use time of the filter 300, such as the pressure between the face cover part 200 and the user’s face, the external pressure of the face cover part 200, and the like, which are measured by the sensor unit 400.

The calculation unit 600 may calculate a pressure difference between the first pressure and the second pressure by comparing the first pressure measured from the first pressure sensor 410 and the second pressure measured from the second pressure sensor 420. Here, the pressure difference means a magnitude of a result value obtained by subtracting the second pressure from the first pressure. However, in the present specification, the pressure difference has been described as meaning the difference between the first pressure and the second pressure, but this is only an example, and the second pressure is not measured by the second pressure sensor 420, but may be a reference value preset in the storage unit 700. Accordingly, the calculation unit 600 may compare the first pressure measured from the first pressure sensor 410 with the preset reference value to calculate a pressure difference that is a difference between the first pressure and the reference value.

When the first pressure and the second pressure are the same as each other by comparing the first pressure and the second pressure, the calculation unit 600 may be determined that the wearing of the mask 1 is released from the user’s face. In other words, when the pressure difference is 0, the calculation unit 600 is determined that the pressures inside and outside the mask 1 are the same as each other, and thus, the calculation unit 600 is determined that the user does not wear the mask 1 and the filter 300 is not used by the user’s respiration. In addition, when it is determined that the user has released the wearing of the mask 1, the calculation unit 600 may control the fan unit 130 to stop the driving of the fan unit 130.

In addition, the calculation unit 600 compares the first pressure and the second pressure or the preset reference value, and determines that the user wears the mask 1 to respire when the pressure difference is greater than or equal to a certain predetermined value. In other words, if the pressure difference is greater than or equal to the predetermined value, the pressures inside and outside the mask 1 are varied by respiration, and thus, the calculation unit 600 is determined that the filter 300 is used by the user’s respiration.

When it is determined that the filter 300 is used, the calculation unit 600 may calculate a time when the filter 300 is used. The calculation unit 600 may start and stop time measurement when a certain predetermined condition is satisfied. For example, the calculation unit 600 may start the time measurement when the calculated pressure difference is greater than or equal to a predetermined value, and stop the time measurement when the pressure difference is less than the predetermined value. In other words, the calculation unit 600 may calculate a time (use time of the filter 300) while the pressure difference between the first pressure and the second pressure is maintained at a predetermined value or more. In addition, the calculation unit 600 may display the calculated use time of the filter 300 to the user through the display unit 500.

Meanwhile, the use time of the filter 300 calculated by the calculation unit 600 may be stored in the storage unit 700. In addition, whenever it is determined that the filter 300 is used, the calculation unit 600 may calculate the use time of the filter 300 and store the calculated use time in the storage unit 700. The calculation unit 600 may calculate the accumulated use time of the filter 300 through the stored use time of the filter 300. In addition, the use time of the filter 300 or the accumulated use time of the filter 300 stored in the storage unit 700 may be used as data for calculating the life time of the filter 300 to be described below. Meanwhile, the calculation unit 600 may be implemented by a computing device including a microprocessor, a measuring device such as a sensor, a timer, and a memory, and the implementation method thereof is obvious to those skilled in the art, and thus, more detailed description thereof will be omitted. When the first pressure (the internal pressure of the mask 1) is less than the second pressure (the external pressure of the mask 1), the calculation unit 600 may be determined an inhalation state in which the air is introduced into the mask 1 from the outside of the mask 1 by the user’s inhalation. In addition, when the first pressure is greater than the second pressure, the calculation unit 600 may be determined an exhalation state in which the air is discharged from the inside of the mask 1 to the outside of the mask 1 by the user’s exhalation. For example, if the user repeats the respiration periodically while wearing the mask 1, the inhalation state and the exhalation state may appear alternately.

When it is determined that the inhalation state is converted to the exhalation state, the calculation unit 600 is determined that the user respires once. As such, the calculation unit 600 may calculate the number of respiration times of the user by calculating the number of times of converting the inhalation state to the exhalation state. Further, the number of respiration times of the user calculated by the calculation unit 600 may be stored in the storage unit 700 in addition to the use time of the filter 300 by the user. The number of respiration times may be used as data for calculating the remaining life time of the filter 300.

In addition, when it is determined that the filter 300 has been used, the calculation unit 600 may calculate the remaining life time of the filter 300 based on the data acquired from the sensor unit 400. In other words, the calculation unit 600 may calculate the remaining life time of the filter 300 based on at least one of the use time of the filter 300 and the number of respiration times of the user. Here, the remaining life time of the filter 300 may be calculated in consideration of not only the use time of the filter 300, but also the average number of respiration times of the user per hour, the number of respiration times of the user through the filter 300, etc. For example, if the user respires faster, such as exercising or having a conversation or the like, the number of respiration times per hour may be greater than the number of respiration times per hour on average. At this time, even though the use time of the filter 300 is the same, the number of times of respiring through the filter 300 increases, so that the life of the filter 300 is reduced more quickly. Accordingly, the calculation unit 600 may calculate the remaining life time of the filter 300 in consideration of the number of respiration times during the time when the filter 300 is used. In addition, the calculation unit 600 may calculate the remaining life time of the filter 300 and display the calculated remaining life time on the display unit 500.

The storage unit 700 may store the first pressure measured from the first pressure sensor 410 and the second pressure measured from the second pressure sensor 420 and transmit the first pressure and the second pressure to the calculation unit 600. However, this is only an example, and the second pressure may be a value which is not measured from the second pressure sensor 420 and stored in the storage unit 700, but is previously stored in the storage unit 700. Meanwhile, whenever the filter 300 has been used, the storage unit 700 may store the use time of the filter 300 calculated by the calculation unit 600. In addition, the storage unit 700 may store the number of respiration times of the user calculated by the calculation unit 600. For example, the storage unit 700 may be a storage medium such as a memory.

Hereinafter, functions and effects of the mask 1 having configuration as described above will be described.

The user first may insert the spacer 120 of the respiration assist device 100 through the filter 300, and then fasten the filter fastening part 124 and the fixture 330, thereby mounting the respiration assist device 100 on the filter 300. When the respiration assist device 100 and the filter 300 are coupled with each other, in order to couple the face cover part 200 and the respiration assist device 100, the intake port 230 of the face cover part 200 may be coupled with the mask connector 111 of the respiration assist device 100. At this time, the user may insert the port protrusion 231 of the intake port 230 into the connector groove 11 la of the mask connector 111, and then rotate the body part 110 with respect to the face cover part 200 at a predetermined angle, thereby mounting the respiration assist device 100 on the face cover part 200. The user may wear the mask 1 when the face cover part 200 and the respiration assist device 100 are coupled with each other.

When the user wears the mask 1 and respires, the performance of the filter 300 is deteriorated while air is filtered through the filter 300. At this time, the time when the filter 300 is used by the user’s respiration, the number of respiration times of the user, etc. may be calculated by measuring the first pressure, which is the internal pressure of the mask 1 and the second pressure, which is the external pressure of the mask 1 through the sensor unit 400. In addition, the remaining life time of the filter 300 may be calculated based on the calculated use time of the fdter 300 and the number of respiration times of the user, and the like to be notified to the user.

As such, the mask 1 according to the first embodiment of the present invention has an effect of being able to provide the user with clean air from which fine dust, pollutants, bacteria, etc. are filtered while the user respires.

In addition, when the filter 300 capable of filtering air filters a lot of air, the performance of the filter 300 may be deteriorated, but the respiration assist device 100 according to an embodiment of the present invention may have an effect of notifying a replacement timing of the filter 300 by life of the filter 300 being notified to the user in consideration of the use time of the filter 300, the number of respiration times of the user, etc.

Hereinafter, a second embodiment of the present invention will be described. In the description of the second embodiment, differences compared to the above-described embodiment will be mainly described, and the same description and reference numerals refer to those of the above-described embodiment.

According to the second embodiment of the present invention, the sensor unit 400 may include a first sensor 410, and the first sensor 410 may be referred to as a flow sensor 410. In the embodiment, the first sensor 410 is described as the flow sensor 410. The flow sensor 410 may continuously measure the flow rate of air flowing into the mask 1. For example, the flow sensor 410 may continuously measure the flow rate of air passing through the filter 300. The flow sensor 410 may be disposed in any one of the inside of the filter 300, a portion adjacent to the fan unit 130, the air passage 112, and the inside of the face cover part 200. As such, the flow sensor 410 measures the flow rate of air flowing into the face cover part 200 through the filter 300, and may store a flow rate value in the storage unit 700 or transfer the flow rate value to the calculation unit 600.

The calculation unit 600 may be determined that the filter 300 is used when the air flow rate in the filter 300 measured by the flow sensor 410 is greater than or equal to a certain predetermined value. If it is determined that the filter 300 is used, the calculation unit 600 may calculate at least one of the use time and the remaining life time of the filter 300. In this case, the calculation unit 600 may be determined that the user wears the mask 1. In addition, when the flow rate measured by the flow sensor 410 is less than a predetermined value, the calculation unit 600 may be determined that the wearing of the mask 1 is released from the user’s face. The calculation unit 600 may measure the use time of the filter 300 based on a time point at which the flow rate in the mask 1 measured by the flow sensor 410 changes. In other words, the calculation unit 600 may calculate a time (use time of the filter 300) while the flow rate measured by the flow sensor 410 is maintained at a predetermined value or more.

When the flow rate of air passing through the filter 300 increases, the calculation unit 600 may be determined that the user is in an inhalation state. In addition, even in the same inhalation state, when the flow rate is increased a lot, the calculation unit 600 may be determined that the air is largely inhaled, and when the flow rate is slightly increased, the calculation unit 600 may be determined that the air is inhaled less. In addition, the calculation unit 600 may calculate the number of respiration times of the user based on the flow rate of the air passing through the filter 300.

Further, the calculation unit 600 may calculate the remaining life time of the filter 300 based on at least one of the calculated number of respiration times of the user, the air flow rate, and the use time of the filter 300. For example, the storage unit 700 may store a flow rate that passes through the filter 300 whenever the user respires, and the calculation unit 600 may sum the flow rate of the air passing through the filter 300 stored in the storage unit 700 during the use time of the filter 300. As such, the calculation unit 600 may calculate an approximate remaining life time of the filter 300 based on a relationship between the flow rate of air summed during the use time of the filter 300 and the flow rate of the air that passes through the filter 300 per hour on average when generally respiring.

Hereinafter, a third embodiment of the present invention will be described. According to the third embodiment of the present invention, the sensor unit 400 may include a first sensor 410, and the first sensor 410 may be referred to as a light detection sensor 410. In the embodiment, the first sensor 410 is described as the light detection sensor 410.

The light detection sensor 410 may detect light irradiated into the face cover part 200, and the light detection sensor 410 may detect the light and transmit a signal to the calculation unit 600. The light detection sensor 410 may be provided inside the face cover part 200.

When the light detection sensor 410 does not detect light, the calculation unit 600 may be determined that the mask 1 is worn on the user’s face so that no light is detected. In addition, the calculation unit 600 may be determined that the filter 300 is used when no light is detected by the light detection sensor 410. Meanwhile, when the light is detected by the first sensor 410, the calculation unit 600 may be determined that the mask 1 has been released from the user’s face.

If it is determined that the filter 300 has been used, the calculation unit 600 may calculate at least one of the use time and the remaining life time of the filter 300. For example, the calculation unit 600 may calculate a use time of the filter 300 by measuring a time from a time point when no light is detected by the light detection sensor 410 to a time point when light is detected. In addition, the calculation unit 600 may calculate the remaining life time of the filter 300 by subtracting the time when the filter 300 is used from a total available time of the filter 300.

Hereinafter, a fourth embodiment of the present invention will be described. According to the fourth embodiment of the present invention, the sensor unit 400 may include a first sensor 410, and the first sensor 410 may be referred to as a temperature sensor 410. In the embodiment, the first sensor 410 is described as the temperature sensor 410.

The temperature sensor 410 is provided in the mask 1 and may be configured to continuously measure a temperature in the mask 1. For example, the temperature sensor 410 may measure a temperature between the face cover part 200 and the user’s face.

Meanwhile, the calculation unit 600 may receive the temperature in the mask 1 from the temperature sensor 410. When the measured temperature in the mask 1 increases to a predetermined range, the calculation unit 600 may be determined that the temperature in the mask 1 increases to the predetermined range by the user’s respiration. In this case, the calculation unit 600 may be determined that the filter 300 is used, and determine that the mask 1 is worn on the user’s face.

In addition, the calculation unit 600 may determine that the filter 300 is continuously used when the temperature in the mask 1 is maintained for a predetermined time while increasing to the predetermined range. At this time, the calculation unit 600 may be determined that the user is wearing the mask 1. In addition, when the temperature in the mask 1 decreases to a predetermined range, the calculation unit 600 may be determined that the mask 1 is released from the user’s face. If it is determined that the fdter 300 has been used, the calculation unit 600 may calculate at least one of the use time and the remaining life time of the fdter 300. For example, the calculation unit 600 may calculate a use time of the fdter 300 by measuring a time from a time point when the temperature in the mask 1 increases to a time point when the temperature in the mask 1 decreases. In addition, the calculation unit 600 may calculate the remaining life time of the fdter 300 by subtracting the time when the fdter 300 is used from a total available time of the fdter 300.

Hereinafter, a fifth embodiment of the present invention will be described. According to the fifth embodiment of the present invention, the sensor unit 400 may include a first sensor 410, and the first sensor 410 may be referred to as a humidity sensor 410. In the embodiment, the first sensor 410 is described as the humidity sensor 410.

The humidity sensor 410 is provided in the mask 1 and may be configured to continuously measure the humidity in the mask 1. For example, the humidity sensor 410 may measure the humidity between the face cover part 200 and the user's face.

The calculation unit 600 may receive the humidity in the mask 1 measured by the humidity sensor 410. When the measured humidity in the mask 1 increases to a predetermined range, the calculation unit 600 may be determined that the humidity in the face cover part 200 of user’s mask increases to the predetermined range by the user's respiration. In this case, the calculation unit 600 may be determined that the filter 300 is used by the user’s respiration, and determine that the mask 1 is worn on the user's face.

In addition, the calculation unit 600 may be determined that the filter 300 is continuously used when the humidity in the mask 1 is maintained for a predetermined time while increasing to the predetermined range. In addition, when the humidity in the mask 1 decreases to a predetermined range, the calculation unit 600 may be determined that the mask 1 is released from the user's face.

If it is determined that the filter 300 has been used, the calculation unit 600 may calculate at least one of the use time and the remaining life time of the filter 300. For example, the calculation unit 600 may calculate a time while the filter 300 has been used by measuring a time from a time point when the humidity in the mask 1 increases to a time point when the humidity in the mask 1 decreases. In addition, the calculation unit 600 may calculate the remaining life time of the filter 300 by subtracting the time when the filter 300 is used from a total available time of the filter 300.

Hereinafter, a sixth embodiment of the present invention will be described. According to the sixth embodiment of the present invention, the sensor unit 400 of the mask 1 may include a first sensor 410, and the first sensor 410 may be referred to as a gyro sensor. In the embodiment, the first sensor 410 is described as the gyro sensor 410.

The gyro sensor 410 may measure an inclination of the mask 1, and the gyro sensor 410 may measure the inclination of the mask 1 and transmit the measured inclination to the calculation unit 600. Such a gyro sensor 410 may be provided on the mask 1.

When the inclination measured by the gyro sensor 410 is included within a certain predetermined range, the calculation unit 600 may be determined that the filter 300 is used. In this case, the calculation unit 600 may be determined that the mask 1 is worn on the user’s face. Meanwhile, when the inclination measured by the gyro sensor 410 is not included within the certain predetermined range, the calculation unit 600 may be determined that the mask 1 is released from the user’s face.

If it is determined that the filter 300 has been used, the calculation unit 600 may calculate at least one of the use time and the remaining life time of the filter 300. For example, the calculation unit 600 may calculate the use time of the filter 300 by measuring a time from a time point when the inclination of the mask 1 is included within a certain predetermined range to a time point when the inclination of the mask 1 is not included within the predetermined range. In addition, the calculation unit 600 may calculate the remaining life time of the filter 300 by subtracting the time when the filter 300 is used from a total available time of the filter 300.

Meanwhile, in this specification, the first to sixth embodiments have been described as different embodiments, but these embodiments are only examples, and one or more of the first to sixth embodiments are combined with each other to calculate at least one of the use time and the life time of the filter 300.

As an example, the light detection sensor 410 and the first pressure sensor 410 may be combined and provided on the mask 1. In the mask 1 including the light detection sensor 410 and the first pressure sensor 410, the calculation unit 600 may calculate at least one of the use time and the remaining life time of the filter 300. When the light is not detected by the light detection sensor 410 and the pressure measured by the first pressure sensor 410 is changed, such a calculation unit 600 may be determined that the filter 300 is used by the user’s respiration. In addition, when the light is detected by the light detection sensor 410 and a change in pressure is not detected in the first pressure sensor 410, the calculation unit 600 may be determined that the mask 1 is released from the user’s face.

As such, the calculation unit 600 may be determined whether the user wears the mask 1 and whether the filter 300 is used by the user’s respiration by the light detection sensor 410 and the first pressure sensor 410. Further, the calculation unit 600 may calculate the use time of the filter 300 by the user’s respiration, the number of times of respiring while the user wears the mask 1, and the remaining life time of the filter 300.

Meanwhile, as another example, the gyro sensor 410 and the first pressure sensor 410 may be combined and provided on the mask 1. In the mask 1 including the gyro sensor 410 and the first pressure sensor 410, the calculation unit 600 may calculate at least one of the use time and the life time of the filter 300. When the inclination measured by the gyro sensor 410 is included in the predetermined range and the pressure measured by the first pressure sensor 410 is changed, such a calculation unit 600 may be determined that the filter 300 is used by the user’s respiration. Further, when the inclination is not included within the predetermined range and the pressure measured by the first pressure sensor 410 is not changed, the calculation unit 600 may be determined that the mask 1 is released from the user’s face.

As such, the calculation unit 600 may be determined whether the user wears the mask 1 and whether the filter 300 is used by the user’s respiration by the gyro sensor 410 and the first pressure sensor 410. Further, the calculation unit 600 may calculate the use time of the filter 300 by the user’s respiration, the number of times of respiring while the user wears the mask 1, and the remaining life time of the filter 300.

The embodiments of the present invention are listed as follows.

Item 1 is a mask for filtering air flowing inside, the mask including: a face cover part provided to be wearable on a user’s face; a respiration assist device capable of being coupled to the face cover part; one or more sensor units provided on at least one of the face cover part and the respiration assist device; and a calculation unit configured to calculate at least one of a use time and a remaining life time of the filter based on data measured from the one or more sensor units.

Item 2 is the mask, wherein the one or more sensor units are provided on at least one of inner and outer surfaces of the mask, and include one or more of a first pressure sensor that measures a first pressure in the mask; a second pressure sensor that measures a second pressure outside the mask; a flow sensor that measures a flow rate of the air flowing into the mask; a light detection sensor that detects light irradiated into the face cover part; a temperature sensor that measures a temperature in the mask; a humidity sensor that measures the humidity in the mask; and a gyro sensor that measures an inclination of the mask.

Item 3 is the mask, wherein the calculation unit compares the first pressure with a predetermined reference value to calculate a pressure difference which is a difference between the first pressure and the predetermined reference value and determines that the filter is used when the pressure difference is greater than or equal to a certain predetermined value.

Item 4 is the mask, wherein the calculation unit compares the first pressure with the second pressure to calculate a pressure difference which is a difference between the first pressure and the second pressure and determines that the filter is used when the pressure difference is greater than or equal to a certain predetermined value.

Item 5 is the mask, wherein the calculation unit calculates a use time of the filter, and the use time of the filter includes a time while the pressure difference is maintained at the certain predetermined value or more.

Item 6 is the mask, wherein the calculation unit is determined an inhalation state when the first pressure is smaller than the second pressure, determines an exhalation state when the first pressure is greater than the second pressure, and calculates the number of times of converting the inhalation state to the exhalation state to calculate the number of respiration times of the user.

Item 7 is the mask, wherein the calculation unit calculates the remaining life time of the filter based on at least one of the use time of the filter and the number of respiration times.

Item 8 is the mask, wherein the respiration assist device further includes a body part formed with an air passage through which the air flows; and a fan unit of which at least a part is disposed inside the air passage and which allows the air to flow into the face cover part through the air passage.

Item 9 is the mask, wherein the one or more sensor units include a first pressure sensor and a second pressure sensor capable of measuring a pressure, the first pressure sensor is provided inside the air passage to measure a first pressure inside the air passage, and the second pressure sensor is provided on the body part to measure a second pressure outside the mask.

Item 10 is the mask, wherein the calculation unit is determined that the filter is used when the flow rate measured by the flow sensor is greater than or equal to a certain predetermined value.

Item 11 is the mask, wherein the calculation unit calculates a use time of the filter, and the use time of the filter includes a time while the flow rate measured by the flow sensor is maintained at the predetermined value or more.

Item 12 is the mask, wherein the calculation unit calculates the remaining life time of the filter based on at least one of the flow rate of the air flowing into the mask measured by the flow sensor and the use time of the filter.

Item 13 is the mask, wherein the calculation unit is determined that the filter is used when the light is not detected by the light detection sensor.

Item 14 is the mask, wherein the calculation unit is determined that the filter is used when the temperature measured by the temperature sensor increases to a predetermined range, or when the measured temperature is maintained for a predetermined time while increasing to the predetermined range.

Item 15 is the mask, wherein the calculation unit is determined that the filter is used when the humidity measured by the humidity sensor increases to a predetermined range, or when the measured humidity is maintained for a predetermined time while increasing to the predetermined range.

Item 16 is the mask, wherein the calculation unit is determined that the filter is used when the inclination measured by the gyro sensor is included in a certain predetermined range.

Item 17 is the mask, wherein the calculation unit calculates at least one of the use time and the remaining life time of the filter when it is determined that the filter is used. Item 18 is the mask further including: a display unit configured to receive and display at least one of the use time and the remaining life time calculated by the calculation unit.

While the embodiments of the present invention have been described as specific examples, this is merely illustrative and it should be understood that the present invention is not limited thereto and has the widest range according to basic spirit disclosed in the present specification. Those skilled in the art may implement a pattern having a non- described shape by combining/substituting the disclosed examples, but this does not also depart from the scope of the present invention. Besides, it is apparent that those skilled in the art may easily change or modify the examples disclosed based on the present specification and these changes or modifications also belong to the scope of the present invention.

Explanation of Reference Numerals and Symbols

1: Mask 100: Respiration assist device

110: Body part 111: Mask connector

11 la: Connector groove 112: Air passage

120: Spacer 121: Supporter

121a: First supporter 121b: Second supporter

122: Connection part 123: Inlet

123a: First inlet 123b: Second inlet

124: Filter fastening part 130: Fan unit

131: Fan body 132: Blade

133: Rotation shaft 200: Face cover part

210: Junction member 211: Through-hole

220: Air inlet 230: Intake port

231 : Port protrusion 240: Opening/closing member

241 : Locking part 300: Filter

310: First filter layer 320: Second filter layer

330: Fixture 400: Sensor unit

410: First sensor 420: Second sensor

500: Display unit 600: Calculation unit

700: Storage unit