Mask device

Abstract

The mask device according to an embodiment of the present invention includes: a mask body including a rear body and a front body coupled to the front of the rear body, and having an inhalation port and an exhalation port formed therein; a face shield coupled to the rear of the rear body and in close contact with the user's face, with a breathing space formed inside the face shield; and an air purification module installed in the rear body to purify external air flowing into the inhalation port and supply it to the breathing space; the face shield includes: a coupling part facing the rear of the rear body; a close contact part in contact with the user's face; a connection part formed to connect the coupling part and the close contact part and having a predetermined width in the front-rear direction; and a separating protrusion protruding from the outer surface of the connection part to keep at least a part of the connection part separated from the inhalation port.

Description

Technical Field

[0001] The present invention relates to a mask device. Background Art

[0002] A mask can be defined as a sanitary product that filters harmful substances such as germs or dust contained in the air when the user inhales by covering the user's nose and mouth, and can minimize the spread of viruses or bad breath exhaled by the user to people around.

[0003] Recently, due to the rampant spread of highly contagious viruses, for safety reasons, everyone is being advised to wear a mask when going out to minimize infection.

[0004] Currently, various types and forms of masks have been introduced on the market. In particular, many masks equipped with a filter module are being sold to minimize the direct inflow of harmful substances contained in the air into the respiratory organs of the mask wearer.

[0005] In addition, many masks equipped with a fan are also sold to make the flow of air through the mask smooth when the user inhales or exhales.

[0006] Existing masks, including the mask disclosed in the following prior art (Patent Document 1: EP3398657A), all have a filter so that after filtering harmful substances contained in the external air, it flows into the user's respiratory organs.

[0007] In addition, a pressure sensing device for sensing the pressure in the breathing space formed between the mask and the user's face and a fan module that changes the rotation speed according to the pressure sensed by the pressure sensing device are provided in the mask, thereby helping the user to breathe comfortably even while wearing the mask.

[0008] However, most of the masks introduced and disclosed on the market currently have the following structure: an air inlet is formed on the front of the mask, and an air outlet is formed on the back of the mask, specifically, at a position on the back corresponding to the position near the user's mouth or nose. Here, the front of the mask refers to the part exposed to the outside, and the back of the mask refers to the part that adheres to the user's face.

[0009] Specifically, the air inlet formed on the mask is usually formed at a position near the center of the front or at a position near both ends of the front. In the above prior art, it is formed at a position near both ends of the front of the mask.

[0010] In the structure where the air inlet is formed on the front of the mask and the air outlet is formed on the back of the mask as described above, external air flows into the interior of the mask, passes through the fan and filter, and is then discharged to the user's respiratory organs via the air outlet. During this process, there is a problem of excessive air flow conversion occurring.

[0011] As the number of times of air flow conversion of the inhaled air increases, the flow resistance increases, resulting in an increase in the load on the fan. In addition, as the load on the fan increases, there is a problem of increased power consumption of the battery that powers the fan.

[0012] Moreover, as the number of times of air flow conversion of the inhaled air increases, there is also a problem of increased flow noise.

[0013] In addition, users wearing a mask with an air inlet configured on the front of the mask often place the mask in a state where the air inlet faces upward or forward after removing the mask. Therefore, there is a relatively high possibility that dust will flow in through the air inlet.

[0014] In addition, when the air inlet is configured on the front of the mask, it may give an unappealing appearance impression when worn.

[0015] In addition, in order to prevent the air inlet from being directly exposed to the outside, an inlet cover is also installed. In this case, it may occur that the inlet cover is separated from or damaged by the mask due to the force or impact acting from the outside.

[0016] In addition, in the structure where the air inlet is not formed on the mask body but on other parts, for example, when the air inlet is formed in a separate air purification module that is detachably or foldably coupled to the side of the mask body, there is a disadvantage that the flow resistance significantly increases during the period when the air inhaled into the air purification module reaches the outlet formed in the center of the mask body.

[0017] Patent Document 1: EP3398657A (April 21, 2021) Summary of the Invention

[0018] The present invention is proposed to improve the problems described above.

[0019] The mask device according to an embodiment of the present invention includes: a mask body including a rear body and a front body coupled to the front of the rear body, having an inlet and an outlet formed thereon; a face shield coupled to the back of the rear body and closely attached to the user's face, having a breathing space formed inside the face shield; and an air purification module installed on the rear body to purify the external air flowing into the inlet and supply it to the breathing space.

[0020] In particular, the face shield includes: a coupling part facing the back surface of the rear main body; a close contact part contacting the user's face; a connection part formed to connect the coupling part and the close contact part and having a predetermined width in the front-rear direction; a separating protrusion protruding from the outer surface of the connection part to keep at least a part of the connection part separated from the suction port.

[0021] The separating protrusion may be formed to protrude or have a curvature.

[0022] The separating protrusion may extend in the front-rear direction from the outer surface of the connection part. At this time, the separating protrusion may extend by a length corresponding to the width of the connection part in the front-rear direction.

[0023] A plurality of the separating protrusions may be formed and spaced apart from each other. The plurality of separating protrusions may be arranged parallel to each other or spaced apart in the up-down direction.

[0024] The up-down direction length of the plurality of separating protrusions may increase as approaching the upper part from the lower part of the connection part.

[0025] The air purification module may include: a filter disposed in front of the suction port; and a filter cover body installed on the rear main body to cover the filter; the suction port may be formed in the filter cover body.

[0026] The filter cover body may include: a filter frame surrounding the side surface of the filter; and a filter cover formed on the back surface of the filter frame and having a suction grille for providing the suction port. At this time, the separating protrusion may be disposed in the area of the filter cover.

[0027] The suction port is located outside the breathing space, and the exhalation port is located inside the breathing space. The suction port may include a left suction port located on the left side based on the face shield and a right suction port located on the right side, and the separating protrusions may be respectively formed on the left side surface and the right side surface of the connection part.

[0028] The mask device according to the embodiment of the present invention as described above has the following effects.

[0029] First, since both the suction port and the exhalation port of the mask device are formed on the back surface of the mask main body covering the user's face, compared with the case where the suction port of the mask device is formed on the front surface of the mask main body or other parts other than the mask main body, it has the effect of significantly reducing the flow resistance.

[0030] Second, when the user wears the mask device, the suction port is not exposed to the outside, so there is an advantage that no additional cover member for blocking the suction port is required. Furthermore, since no additional cover member needs to be installed on the front of the mask device, there is an effect that the cover member will not be damaged or separated due to external force.

[0031] Third, since the suction port is formed on the back of the mask body, the advantage is that when the mask device is removed and the front of the mask body faces forward or upward, the phenomenon that dust or other foreign matters flow into the mask device through the suction port can be minimized.

[0032] Fourth, even if the face shield is pressed during the process of the user wearing the mask device, a part of the face shield will not cover the suction port of the mask device due to the partition protrusions. Therefore, there is an advantage that it can prevent the suction port from being blocked and causing difficulty in breathing.

[0033] Fifth, since a plurality of partition protrusions are respectively formed in the front-rear direction from the side surface of the face shield, the face shield can be prevented from being overly pressed by external force, thus having the advantage of improving the wearing experience. Description of the Drawings

[0034] Figure 1 is the front view of the mask device according to an embodiment of the present invention.

[0035] Figure 2 is the rear perspective view of the mask device.

[0036] Figure 3 is the exploded perspective view of the mask device.

[0037] Figure 4 is the front perspective view of the mask device with the front main body separated.

[0038] Figure 5 is the rear perspective view of the front main body constituting the mask device according to an embodiment of the present invention.

[0039] Figure 6 is the front perspective view of the rear main body constituting the mask device according to an embodiment of the present invention.

[0040] Figure 7 is the rear perspective view of the rear main body.

[0041] Figure 8 is the transverse cross-sectional view of the mask device according to an embodiment of the present invention.

[0042] Figure 9 is the longitudinal cross-sectional view of the mask device.

[0043] Figure 10 is the front view of the face shield according to an embodiment of the present invention.

[0044] Figure 11 is the rear view of the face shield.

[0045] Figure 12 is the side view of the face shield.

[0046] Figure 13 is a partial cross-sectional view of the face shield cut along line 13-13 of Figure 11 .

[0047] Figure 14 is the rear perspective view of the mask device equipped with the face shield. Detailed Description of the Invention

[0048] Figure 1 is the front view of the mask device according to an embodiment of the present invention, Figure 2 is the rear perspective view of the mask device, Figure 3 is the exploded perspective view of the mask device, Figure 4 is the front perspective view of the mask device with the front body separated.

[0049] Referring to Figures 1 to 4 , the mask device 10 according to an embodiment of the present invention includes: a mask body 11; a face shield 14, which is coupled to the back of the mask body 11 in a detachable or fixed manner; and an air purification module 30, which is installed inside the mask body 11.

[0050] Specifically, the mask body 11 includes: a front body 12, which forms the front outer shape; and a rear body 13, which is coupled to the back of the front body 12 to form the rear outer shape. The front of the front body 12 forms the front of the mask device 10, and the back of the rear body 13 faces the face of the user (or wearer).

[0051] In addition, the face shield 14 is coupled to the back of the rear body 13 and is in close contact with the face of the user, and it can be formed of a stretchable silicone or rubber material. A breathing space is formed inside the face shield 14. When the user wears the mask device 10, the nose and mouth of the user are accommodated in the breathing space. Therefore, the outside air that is purified by the air purification module 30 at the same time is guided to the breathing space and then inhaled by the user, and the air generated when the user exhales is also discharged to the breathing space.

[0052] A predetermined space is formed between the front body 12 and the rear body 13. As Figure 4 shown, various electrical components are installed on the front of the rear body 13. In addition, the various electrical components are shielded by the front body 12 and are not exposed to the outside.

[0053] In addition, the air purification module 30 includes: a fan module 31 placed in a receiving portion 133 (refer to Figure 6 ) formed in the rear main body 13; and a filter 33 placed behind the fan module 31. The fan module 31 includes a centrifugal fan that sucks air axially and discharges it radially.

[0054] The air purification module 30 further includes a filter cover 34 placed behind the filter 33. An air inlet for sucking external air is formed in the filter cover 34. The filter cover 34 can be rotatably coupled to the rear main body 13. As shown in the figure, the air inlet can be provided in the form of a suction grille 343.

[0055] Specifically, the filter cover 34 includes: a filter frame 341 surrounding three sides of the filter 33; and a filter cover 342 formed on the back surface of the filter frame 341. The suction grille 343 is included in the filter cover 342.

[0056] It can be understood that the suction grille 343 is a structure composed of a plurality of suction slits 3431 and a plurality of partition ribs 3432 arranged between adjacent suction slits 3431. It can also be understood that the suction grille 343 is a structure in which a large air inlet is divided into a plurality of slender suction slits 3431 by the plurality of partition ribs 3432. In addition, the plurality of slender suction slits 3431 can be divided into an upper slit and a lower slit by a reinforcing rib 3422. It should be clear that hereinafter, the air inlet formed on the back surface of the mask device 10 for sucking external air is defined to include various forms of holes represented by the suction grille 343, and the air inlet of the mask main body 11 and the suction grille 343 should be interpreted to have the same meaning.

[0057] In addition, an air outlet 101 is formed at a position spaced from the air inlet in the direction of the center of the rear main body 13. By the operation of the fan module 31, the external air sucked through the air inlet or the suction grille 343 sequentially passes through the filter 33 and the fan module 31, and then is discharged through the air outlet 101 into the breathing space.

[0058] The air inlet, that is, the suction grille 343, is arranged outside the face shield 14, and the air outlet 101 is arranged inside the face shield 14. That is, the suction grille 343 is located outside the breathing space, and the air outlet 101 is located inside the breathing space, so that the inhaled external air and the air exhaled by the user do not mix with each other.

[0059] On the other hand, the air purification module 30 further includes a flow guide 32 disposed behind the fan module 31.

[0060] In addition, the mask device 10 further includes at least one of a main control module 15, a power module 16, an indicator module 18, a wireless communication module 17, a speaker module 19, a battery 20, and an exhaust valve 21.

[0061] Specifically, the main control module 15 is a module for controlling the operation of the fan module 31, the speaker module 19, and the pressure sensors and microphones described later. The main control module 15 may be disposed at the upper part of the center of the front surface of the rear body 13.

[0062] The power module 16 is a control module for supplying power to the electrical components installed in the mask device 10. The power module 16 may be disposed at the lower right end of the front surface of the rear body 13.

[0063] A cable connector and an LED module may be installed in the power module 16. Terminals of a cable for power supply and data transmission are inserted into the cable connector, and the LED module is used to notify the operating state of the mask device 10. In addition, the light emitted from the LED module is diffused and guided by the indicator module 18 and irradiated to the outside of the mask device 10.

[0064] The wireless communication module 17 may be any one of various forms of short-range wireless communication modules including Bluetooth. The wireless communication module 17 may be disposed at the lower left end of the front surface of the rear body 13. The wireless communication module 17 may be installed horizontally on the front surface of the rear body 13 in a direction crossing the rear body 13. The wireless communication module 17 may be installed horizontally on the front surface of the rear body 13 by means of a pair of substrate insertion ribs 1315 protruding from the front surface of the rear body 13. Both end portions of the wireless communication module 17 are supported by the pair of substrate insertion ribs 1315.

[0065] The speaker module 19 may be disposed at the lower left end of the front surface of the rear body 13 corresponding to the lower side of the wireless communication module 17.

[0066] The battery 20 may be disposed at the center of the front surface of the rear body 13, and the exhaust valve 21 may be configured to shield an exhaust port formed at the lower side of the center of the front surface of the rear body 13. That is, when the user exhales, the exhaust valve 21 may open the exhaust port, and when the user inhales, the exhaust valve 21 may shield the exhaust port. The exhaust valve 21 may be provided in the form of a bendable and flat flap.

[0067] Here, it should be understood that the front, back, left, and right sides of the mask body 11 are defined based on the state in which the user wears the mask device 10 .

[0068] Figure 5 This is a rear perspective view of the front body of the mask device according to an embodiment of the present invention.

[0069] Reference Figure 5 The front body 12 of the mask device 10 according to the embodiment of the present invention forms the front appearance of the mask device 10 .

[0070] The front body 12 has a flat, single-piece front surface without any additional components, resulting in a neat appearance. However, if air inlets are formed on the left and right sides of the front body 12, there is a disadvantage that if the mask device 10 is removed and placed with the air inlets facing upward, there is a high probability that foreign matter will flow into the mask device 10 through the air inlets.

[0071] Furthermore, when an additional cover is installed to minimize the inflow of foreign matter by shielding the suction port, a gap must be formed between the edge of the cover and the front surface of the front body 12 to allow outside air to flow in. In other words, there is a restriction that the additional cover must be combined with the front surface of the front body 12 to protrude from the front surface of the front body 12.

[0072] As a result, there is a high possibility that the additional cover will be damaged by external force or will hit a surrounding obstacle and become separated from the front body 12. For this reason, it is designed to avoid forming an air intake port for taking in external air on the front body 12 as much as possible to prevent protrusion caused by installing an additional component on the front surface of the front body 12. This is not only beneficial to the appearance but also helps to ensure durability.

[0073] With this in mind, the front of the front body 12 of this embodiment of the present invention not only lacks an air intake for drawing in outside air, but also lacks any additional components, including a cover, resulting in a smooth, continuous single surface. However, a speaker hole 123 is formed on one side of the lower portion to output the user's voice to the outside.

[0074] On the other hand, a plurality of protrusion structures are formed on the back surface of the front body 12 .

[0075] Specifically, one or more substrate securing ribs 125 protrude from the center upper end of the back side of the front body 12. When the edge of the front body 12 is joined to the front edge of the rear body 13, the one or more substrate securing ribs 125 apply pressure to the front of the main control module 15 mounted on the rear body 13, thereby preventing the main control module 15 from shaking.

[0076] A horizontally protruding valve support rib 121 is formed on the back surface of the front body 12. When the front body 12 is combined with the rear body 13, the valve support rib 121 is formed at the position where the upper end of the exhaust valve 21 is located, thereby pressing the upper end of the front surface of the exhaust valve 21. As an example, the valve support rib 121 may extend rearward by a predetermined length with a predetermined width from a position spaced a predetermined distance downward from the center of the back surface of the front body 12.

[0077] In addition, a pair of magnet pressing ribs 126 protrude from the back surface of the front body 12. Specifically, the mask 14 is mounted on the back surface of the rear body 13, a magnet is mounted on the front surface of the mask 14, and a magnet that generates suction with the magnet is also mounted on the front surface of the rear body 13. As a result, the mask 14 is detachably mounted on the back surface of the rear body 13 by the magnetic force of the magnet.

[0078] At this time, a pair of lower magnet mounting portions 135 for mounting the magnet are formed on the front surface of the rear body 13 (refer to Figure 6 ). In addition, the pair of magnet pressing ribs 126 function to respectively press a pair of magnets mounted on the pair of lower magnet mounting portions 135.

[0079] In addition, a substrate pressing rib 127 that contacts the front end portion of the substrate constituting the wireless communication module 17 protrudes from the back surface of the front body 12. Specifically, if the front body 12 and the rear body 13 are combined with each other, the substrate pressing rib 127 presses the front end portion of the substrate constituting the wireless communication module 17 to prevent the wireless communication module 17 from shaking or detaching from the substrate insertion rib 1315.

[0080] In addition, a support rib 122 is formed at a position corresponding to the edge of the speaker hole 123 on the back surface of the front body 12, and the support rib 122 surrounds and supports the edge of the front end portion of the speaker module 19. The support rib 122 may surround in a shape corresponding to the shape of the front surface portion of the speaker module 19.

[0081] In addition, a substrate fixing rib 124 that presses the front surface of the power module 16 protrudes from the back surface of the front body 12. The substrate fixing rib 124 presses the front surface of the substrate constituting the power module 16 to prevent the power module 16 from shaking or detaching from the rear body 13.

[0082] Figure 6 It is a front perspective view of the front body of the mask device constituting an embodiment of the present invention, Figure 7 It is a rear perspective view of the rear body.

[0083] Reference Figure 6 and Figure 7 , the rear body 13 of the mask device 10 according to an embodiment of the present invention includes: a mask part 131 that covers the user's face; and a welding part 132 that bends forward from the edge of the mask part 131.

[0084] Specifically, the welding part 132 is continuously formed along the top surface edge, both side surface edges, and bottom surface edge of the mask part 131. In addition, the front-rear direction width of the welding part 132 that bends along the bottom surface edge of the mask part 131 and extends forward is the largest.

[0085] The portion of the welding part 132 formed on the bottom surface edge of the mask part 131 can be specifically defined as an extension table. The extension table has a convex circular shape, and its front-rear direction width increases as it approaches the center from both side ends of the rear body 13.

[0086] A bottom exhaust port 1362 can be formed at the center of the welding part 132 defined as the extension table, and a button hole 1321 can be formed at a position spaced apart from the bottom exhaust port 1362 toward the side end portion of the rear body 13. A power button is inserted into the button hole 1321. Indicator holes 1322 are respectively formed at positions spaced apart from the left and right edges of the button hole 1321.

[0087] The light irradiated from the light emitting device installed in the power module 16 is irradiated to the outside through the pair of indicator holes 1322. The light emitting device includes an LED module.

[0088] If the light is irradiated to the outside through any one of the pair of indicator holes 1322, it can indicate that the power supply of the mask device 10 is in the on state. In addition, the remaining battery level of the battery 20 can be predicted according to the color of the light irradiated through the other one of the pair of indicator holes 1322.

[0089] A terminal insertion port 1323 is formed at a position further spaced apart from the button hole 1321 toward the side end portion of the rear body 13. A USB (Universal Serial Bus) cable can pass through the terminal insertion port 1323 and be inserted into a terminal connector formed in the power module 16. The battery 20 can be charged through the USB cable, and the version or function of the mask device 10 can be updated or upgraded according to the data transmitted through the USB cable.

[0090] An accommodation part 133 for accommodating the air purification module 30 is formed in the rear main body 13. The accommodation parts 133 are respectively formed on the left and right sides of the center of the rear main body 13, and a pair of the accommodation parts 133 are symmetrical with respect to a vertical line passing through the center of the rear main body 13.

[0091] The accommodation part 133 forms a space for accommodating the air purification module 30 by protruding forward from the front surface of the mask part 131. The accommodation part 133 includes: a placement surface 1331 for placing the air purification module 30, specifically the fan module 31; a fastening surface 1335 connecting the outer edge of the placement surface 1331 at the side end of the mask part 131; and an air guiding surface 1334 connecting the front surface of the mask part 131 at the inner edge of the placement surface 1331.

[0092] In addition, the accommodation part 133 further includes a top surface 1332 connecting the upper ends of the placement surface 1331, the air guiding surface 1334, and the fastening surface 1335 to the front surface of the mask part 131. Further, the accommodation part 133 further includes a bottom surface 1333 connecting the lower ends of the placement surface 1331, the air guiding surface 1334, and the fastening surface 1335 to the front surface of the mask part 131.

[0093] One or a plurality of fastening devices, such as fastening hooks, are formed on the fastening surface 1335.

[0094] Fan mounting holes 1336 are formed in the placement surface 1331, and the top surface 1332 and the bottom surface 1333 can extend horizontally and can extend parallel to each other.

[0095] The fastening surface 1335 can protrude with a curvature toward the outside of the rear main body 13, and can be formed to incline toward the center of the rear main body 13 as it approaches the placement surface 1331 from the mask part 131.

[0096] The air guiding surface 1334 can be designed to protrude and extend with a curvature from the placement surface 1331 toward the mask part 131, so that the air inhaled by the fan module 31 is gently guided along the air guiding surface 1334 to the side of the discharge port 101.

[0097] As another example, the air guiding surface 1334 can be composed of an arc part bent with a specified curvature at the inner edge of the placement surface 1331 and an inclined part flatly and obliquely connecting the mask part 131 from the end of the arc part.

[0098] The accommodating part 133 includes a left accommodating part formed on the left side of the center of the rear main body 13 and a right accommodating part formed on the right side of the center of the rear main body 13. The left accommodating part and the right accommodating part are spaced apart from the center of the rear main body 13 by a predetermined interval, and the battery 20 is installed in the space between the left accommodating part and the right accommodating part.

[0099] A battery mounting part 138 may be formed on the front surface of the rear main body 13. Specifically, the battery mounting part 138 includes a pair of battery placement ribs 1381 and a battery support rib 1382.

[0100] A pair of the battery placement ribs 1381 protrude forward from the front surface of the mask part 131 or the edge of the air guiding surface 1334 and extend parallel in the vertical direction. A pair of the battery placement ribs 1381 support the back surface of the battery 20.

[0101] One end of the battery support rib 1382 extends from either one of the left air guiding surface 1334 and the right air guiding surface 1334, and the other end is connected to the other one of the left air guiding surface 1334 and the right air guiding surface 1334.

[0102] The battery support rib 1382 is formed in an "n" shape and supports the front surface and both side surfaces of the battery 20. Therefore, the phenomenon that the battery 20 is separated from the rear main body 13 can be prevented by the battery support rib 1382.

[0103] In addition, the central part of the battery support rib 1382 protrudes forward to be able to selectively install batteries of different sizes.

[0104] Specifically, the battery support rib 1382 may include a pair of extension parts extending forward from the pair of air guiding surfaces 1334 and a connecting part extending laterally to connect the pair of extension parts.

[0105] In addition, a part of the connecting part bends and extends forward, so that the battery support rib 1382 can be described as being composed of a first battery support part 1382a and a second battery support part 1382b. Specifically, the first battery support part 1382a can be used to support a battery with a relatively wide width and a relatively thin thickness, and the second battery support part 1382b can be used to support a battery with a relatively narrow width and a relatively thick thickness.

[0106] The second battery support part 1382b can be described as being formed by bending forward a part of the connecting part that constitutes the first battery support part 1382a multiple times. Alternatively, it can be described that the second battery support part 1382b in a relatively small "n" shape protrudes forward from the front surface of the first battery support part 1382a in a relatively large "n" shape.

[0107] An exhaust flow path guide 136 protrudes forward from the front surface of the mask part 131 corresponding to the lower side of the battery mounting part 138. Specifically, the exhaust flow path guide 136 is formed on the lower side of the battery mounting part 138 such that the lower end part of the battery 20 mounted on the battery mounting part 138 is supported by the top surface of the exhaust flow path guide 136. As a result, it is possible to prevent the phenomenon that the battery 20 drops downward due to gravity in a state of being inserted into the battery mounting part 138.

[0108] The exhaust flow path guide 136 can form a longitudinal cross-section that is substantially tunnel-shaped, and a front exhaust port 1361 can be formed at a position corresponding to the inside of the exhaust flow path guide 136 in the mask part 131.

[0109] At least one of the front exhaust port 1361 and the bottom exhaust port 1362 can be formed in the form of an exhaust grille divided into a plurality of small exhaust ports by a plurality of grilles or partition ribs. In addition, the front exhaust port 1361 can be selectively opened and closed by the exhaust valve 21.

[0110] An upper magnet mounting part 134 is formed at the upper center of the front surface of the mask part 131, and a pair of lower magnet mounting parts 135 are formed at the lower end of the front surface of the mask part 131.

[0111] Specifically, the lower magnet mounting parts 135 are respectively formed at the left and right edges of the exhaust flow path guide 136. In addition, the magnets mounted on the lower magnet mounting parts 135 are pressed by a pair of the magnet pressing ribs 126 protruding from the back surface of the front main body 12 (refer to Figure 5 ).

[0112] Strap connection parts 137 are respectively formed at the left and right end parts of the rear main body 13. Specifically, the strap connection parts 137 are parts for connecting the ends of straps or bands that are hung on the user's ears or go around the back of the user's head. The strap connection parts 137 are respectively formed at the upper and lower parts of the left end and the upper and lower parts of the right end of the rear main body 13.

[0113] Both ends of either one of the pair of straps can be respectively connected to the strap connection parts 137 provided at the upper left and lower left, and both ends of the other can be respectively connected to the strap connection parts 137 provided at the upper right and lower right. In this way, the pair of straps can be respectively hung on both ears of the user.

[0114] As another method, both ends of either one of the pair of straps can be respectively connected to the strap connection parts 137 provided at the upper left and upper right, and both ends of the other can be respectively connected to the strap connection parts 137 provided at the lower left and lower right. In this way, the pair of straps can surround the back of the user's head.

[0115] Each of the four strap connection parts 137 includes: a strap groove 1373, recessed from the front of the rear main body 13 and extending in the transverse direction (the width direction of the rear main body); a strap hole 1374, formed at any point of the strap groove 1373; a strap rod 1372, connecting the top surface and the bottom surface of the strap groove 1373; and a barrel-shaped waterproof rib 1371, extending from a portion of the back of the rear main body 13 corresponding to the edge of the strap hole 1374.

[0116] On the other hand, a main control module mounting part 139 is formed on the front of the rear main body 13.

[0117] Specifically, the main control module mounting part 139 includes: a substrate fixing hook 1391, protruding forward from the front of the mask part 131; and a substrate placing rib 1393 and a substrate supporting rib 1392, supporting the back of the main control module 15.

[0118] Specifically, the substrate fixing hook 1391 may include: a pair of first substrate fixing hooks 1391a, located above the accommodating part 133; and a pair of second substrate fixing hooks 1391b, located between the pair of accommodating parts 133 facing each other.

[0119] The pair of first substrate fixing hooks 1391a can be arranged at positions spaced upward from the top surface of the left accommodating part and positions spaced upward from the top surface of the right accommodating part. The pair of first substrate fixing hooks 1391a are used to fix the left end and the right end of the main control module 15.

[0120] In addition, a pair of the second substrate fixing hooks 1391b may be respectively located at positions corresponding to the inner upper ends of a pair of the receiving portions 133. Specifically, any one of the pair of the second substrate fixing hooks 1391b may be formed at a position where the upper side corner of the right receiving portion intersects with the front surface of the mask portion 131. In addition, the other one of the pair of the second substrate fixing hooks 1391b may be formed at a position where the upper side corner of the left receiving portion intersects with the front surface of the mask portion 131.

[0121] The pair of the second substrate fixing hooks 1391b are used to fix the lower end portion of the control substrate constituting the main control module 15.

[0122] In addition, the substrate placement rib 1393 may protrude from a portion corresponding to the position between the pair of the second substrate fixing hooks 1391b on the front surface of the mask portion 131, and can support the back surface of the lower end portion of the control substrate constituting the main control module 15.

[0123] In addition, the back surface of the upper end portion of the main control module 15 may be supported by the front end portion of the upper magnet mounting portion 134. The main control module 15 is in a state separated from the mask portion 131 due to the upper magnet mounting portion 134 and the substrate placement rib 1393, and has the effect of being stably coupled to the rear main body 13 through the substrate fixing hook 1391 without shaking.

[0124] On the other hand, a pressure sensor mounting portion (or respiratory sensor mounting portion) 130 may be formed at the upper center of the front surface of the mask portion 131. A pressure sensor (described later) mounted on the pressure sensor mounting portion 130 senses the pressure inside the breathing space defined inside the face mask 14. That is, it is possible to determine whether the user is currently inhaling or exhaling based on the pressure change inside the breathing space. It should be clear that the pressure sensor may also be defined as a respiratory sensor, and even if the terms are different, it should be understood as a sensor performing the same function.

[0125] The pressure sensor mounting portion 130 is provided on the front surface of the rear main body 13. If the main control module 15 is mounted to the main control module mounting portion 139, the pressure sensor mounting portion 130 will be located at the position where a pressure sensor (or respiratory sensor) mounted on the back surface of the main control module 15 is located. Therefore, if the main control module 15 is mounted to the main control module mounting portion 139, the pressure sensor is received inside the pressure sensor mounting portion 130. In addition, the front end portion of the pressure sensor mounting portion 130 is in close contact with the back surface of the control substrate of the main control module 15.

[0126] In addition, a portion defining the bottom of the pressure sensor mounting portion 130 protrudes rearward of the rear main body 13, and a through hole 1301 is formed on the bottom surface of the portion protruding rearward. Through the through hole 1301, the breathing space defined by the back surface of the rear main body 13 and the face mask 14 communicates with the internal space of the pressure sensor mounting portion 130. As a result, a part of the air generated when the user exhales flows into the internal space of the pressure sensor mounting portion 130 through the through hole 1301. In addition, the pressure inside the pressure sensor mounting portion 130 is sensed by the pressure sensor accommodated in the pressure sensor mounting portion 130. In addition, the sensed pressure value is sent to a microcomputer (described later) of the main control module 15, thereby determining the breathing state of the user.

[0127] On the other hand, magnet mounting grooves 1314 are respectively formed at positions on the back surface of the rear main body 13 corresponding to the exact back surface of the upper magnet mounting portion 134 and at positions on the back surface of the rear main body 13 corresponding to the exact back surfaces of the pair of lower magnet mounting portions 135.

[0128] The magnet mounting grooves 1314 include: a first magnet mounting groove 1311 formed at the exact back surface of the upper magnet mounting portion 134; and second and third magnet mounting grooves 1312 and 1313 formed at the exact back surfaces of the lower magnet mounting portions 135.

[0129] Under the action of magnetic force, the three magnets mounted on the face mask 14 are respectively attached to the first magnet mounting groove 1311 to the third magnet mounting groove 1313. In addition, if the user pulls the face mask 14 with a force greater than the magnetic force, the face mask 14 can be easily separated from the rear main body 13.

[0130] On the other hand, as described above, a fan mounting hole 1336 may be formed in the placement surface 1331 constituting the accommodating portion 133. In addition, one or a plurality of flow guide member fastening holes 1331a are formed at positions spaced from the fan mounting hole 1336 toward the outer edge side of the placement surface 1331. The flow guide member 32 is fixed to the accommodating portion 133 by a fastening member passing through the flow guide member fastening hole 1331a.

[0131] In addition, a flow guide member hook 1339 and a filter hook 1338 are respectively formed on the fastening surface 1335 constituting the accommodating portion 133 so as to be spaced in the front-rear direction. The flow guide member hook 1339 is located closer to the placement surface 1331 than the filter hook 1338.

[0132] In addition, a locking groove 1337 is formed on the back side end of the rear body 13 corresponding to the rear of the filter hook 1338. Specifically, the locking groove 1337 may be formed at a position where the welding part 132 and the fastening surface 1335 intersect.

[0133] Figure 8 is a cross-sectional view of the mask device according to an embodiment of the present invention in the lateral direction, Figure 9 is a longitudinal cross-sectional view of the mask device.

[0134] Referring to Figure 8 and Figure 9 , if the user presses the power button to operate the fan module 31, external air flows into the interior of the mask device 10 through the suction grilles 343 (or suction ports) formed on the left and right sides of the back of the mask device 10.

[0135] The external air flowing in through the suction grilles 343 is purified when passing through the filter 33. In addition, the air that has passed through the filter 33 is sucked in along the axial direction of the fan module 31 and then discharged radially.

[0136] As Figure 8 shown, the front of the fan module 31 is placed on the placement surface 1331, and the back of the fan module 31 is open. In addition, the open back of the fan module 31 is shielded by the flow guide 32, and a communication hole serving as the suction port of the fan module 31 is formed in the flow guide 32. The air that has passed through the filter 33 flows into the fan through the communication hole.

[0137] In addition, an air passage 102 is defined between the side surface of the flow guide 32 and the air guide surface 1334. Moreover, the inlet of the air passage 102 communicates with the outlet (or discharge port) of the fan module 31, and the outlet of the air passage 102 communicates with the discharge port 101.

[0138] In addition, the discharge port 101 is located in the breathing space defined by the face shield 14 and the back of the rear body 13. Therefore, the external air sucked in by the fan module 31 is discharged into the breathing space for the user to inhale.

[0139] In addition, the air guide surface 1334 is gently formed with a curvature from the outlet of the fan module 31 toward the discharge port 101, so that the air discharged radially along the fan module 31 does not have a sharp change in the flow direction during the flow toward the discharge port 101.

[0140] Specifically, in the case of a centrifugal fan, the axial intake of air and the radial discharge thereof are caused by the shape of a hub that is conical or truncated conical. That is, the flow direction of the air intake axially into the centrifugal fan smoothly changes by 90 degrees along the curved surface of the hub.

[0141] Here, since the direction of the arc of the hub forming the fan module 31 is the same as the direction of the arc of the air guide surface 1334, the air inhaled into the fan module 31 smoothly changes its flow direction only in one direction.

[0142] If the intake grille 343 is formed on the front main body 12, the intake port of the fan module 31 faces the front main body 12. As a result, the arc direction of the hub forming the fan module is opposite to the arc direction of the air guide surface 1334. As a result, the air discharged from the fan module 31 collides with the starting portion of the air guide surface 1334 corresponding to the inlet of the air passage 102, generating flow resistance and flow noise.

[0143] That is, the air inhaled axially into the fan module 31 substantially forms an "S"-shaped flow, resulting in more flow losses compared to the structure of the present invention that forms a "C" or "n"-shaped flow.

[0144] On the other hand, the air exhaled by the user through the mouth and nose accumulates in the breathing space. In addition, a very small portion of the air accumulated in the breathing space flows through the through hole 1301 into the interior of the pressure sensor mounting portion 130.

[0145] In addition, most of the air accumulated in the breathing space descends and is discharged to the outside through the front exhaust port 1361 and the bottom exhaust port 1362. Here, under the action of the air pressure generated when the user exhales, the exhaust valve 21 bends forward, opening the front exhaust port 1361. In addition, when the user inhales, the pressure inside the breathing space is lower than the atmospheric pressure, and the exhaust valve 21 returns to its original position, shielding the front exhaust port 1361.

[0146] Figure 10 is a front view of the face mask according to an embodiment of the present invention, Figure 11 is a rear view of the face mask, Figure 12 is a side view of the face mask, Figure 13 is along Figure 11 a partial cross-sectional view of the face mask cut along line 13-13 of Figure 14 is a rear perspective view of the mask device equipped with the face mask.

[0147] zRefer toFigures 10 to 14 In the embodiments of the present invention, the face shield 14 that constitutes the mask device 10 can be fixedly or detachably coupled to the back surface of the mask body 11 and can be closely attached to the user's face.

[0148] That is, the front surface portion of the face shield 14 can be closely attached to the back surface of the rear body 13, and the back surface portion of the face shield 14 can be closely attached to the user's face.

[0149] The face shield 14 can be formed in a droplet shape or a donut shape having a predetermined thickness and an empty center portion. The face shield 14 can be formed with a receiving space 144 that is formed by penetrating from the front surface to the back surface through the center portion of the face shield 14, and the user's nose or mouth is received inside the receiving space 144.

[0150] The face shield 14 can be formed in a shape in which the width in the left-right direction becomes narrower as it approaches the upper portion from the lower portion. In addition, the receiving space 144 is formed in a shape in which its width becomes narrower as it approaches the upper portion from the lower portion. Thus, the user's mouth can be received in the lower space of the receiving space 144, and the user's nose can be received in the upper space of the receiving space 144. If the user wears the mask device 10, the user's nose can be fixed and closely attached to the upper portion of the face shield 14.

[0151] The face shield 14 can be molded from a stretchable silicon or rubber material and can form a breathing space inside the face shield 14 by closely attaching to the user's face.

[0152] Specifically, the face shield 14 can include: a coupling portion 141 facing the back surface of the rear body 13; a close contact portion 142 in close contact with the user's face; and a connection portion 143 connecting the coupling portion 141 and the close contact portion 142, having a predetermined width in the front-rear direction. The coupling portion 141, the close contact portion 142, and the connection portion 143 can be formed integrally.

[0153] On the other hand, it can also be described as follows: the face shield 14 includes a front surface portion closely attached to the back surface of the rear body 13, a back surface portion closely attached to the user's face, and a side surface portion connecting the front surface portion and the back surface portion, having a predetermined width in the front-rear direction.

[0154] The coupling portion 141 can be formed to have a predetermined width and surround along the edge of the front end portion of the face shield 14. The coupling portion 141 can be formed in an annular shape that forms a closed loop.

[0155] Magnetic body mounting parts 1461, 1462, 1463 are provided at the joint part 141, and magnetic bodies 1451, 1452, 1453 that exert an attracting force with magnets mounted on the front surface of the rear main body 13 are mounted on the magnetic body mounting parts 1461, 1462, 1463.

[0156] The magnetic body mounting parts 1461, 1462, 1463 protrude forward from the joint part 141, and the magnetic bodies 1451, 1452, 1453 can be inserted and mounted inside the magnetic body mounting parts 146. A plurality of the magnetic body mounting parts 1461, 1462, 1463 can be formed.

[0157] Specifically, the magnetic body mounting parts 1461, 1462, 1463 include: a first magnetic body mounting part 1461 disposed at the upper part of the joint part 141; and a second magnetic body mounting part 1462 and a third magnetic body mounting part 1463 disposed at the lower part of the joint part 141 and spaced apart from each other on both sides.

[0158] At this time, the shapes of the first magnetic body mounting part 1461, the second magnetic body mounting part 1462, and the third magnetic body mounting part 1463 can be the same.

[0159] However, in this embodiment, the first magnetic body mounting part 1461 can be arranged long in the horizontal direction, and the second magnetic body mounting part 1462 and the third magnetic body mounting part 1463 can be arranged long in the vertical direction. That is, since the first magnetic body mounting part 1461 to the third magnetic body mounting part 1463 have the same form or structure, the following will be described taking the first magnetic body mounting part 1461 as a representative.

[0160] The first magnetic body mounting part 1461 can be disposed at the center of the upper end of the joint part 141, and the second magnetic body mounting part 1462 and the third magnetic body mounting part 1463 can be disposed at positions spaced apart from the center of the lower end of the joint part 141 to both sides respectively.

[0161] In addition, a first magnetic body 1451 is mounted inside the first magnetic body mounting part 1461, a second magnetic body 1452 is mounted inside the second magnetic body mounting part 1461, and a third magnetic body 1453 is mounted inside the third magnetic body mounting part 1463.

[0162] According to this configuration, there are the following advantages; by simply bringing the first magnetic body 1451 to the third magnetic body 1453 close to the first magnet mounting groove 1311 to the third magnet mounting groove 1313 respectively, the face shield 14 can also be easily fixed to the back surface of the rear main body 13.

[0163] In particular, according to this embodiment, since one magnetic body 1451 is present in the upper part of the face shield 14 and two magnetic bodies 1452 and 1453 are present in the lower part of the face shield 14, by first coupling the magnetic body 1451 located in the upper part of the face shield 14 to the first magnet mounting groove 1311, the remaining two magnetic bodies 1452 and 1453 can be guided to naturally locate in the second magnet mounting groove 1312 and the third magnet mounting groove 1313.

[0164] Therefore, it is not necessary to align the three magnetic bodies 1451, 1452, and 1453 with the three magnet mounting grooves 1311, 1312, and 1313 respectively, and incorrect coupling is prevented, thus having the advantages of making the installation of the face shield 14 easy and convenient.

[0165] In addition, there is also the following advantage: if the user pulls the face shield 14 with a force greater than the magnetic force when the three magnetic bodies 1451, 1452, and 1453 are respectively in an attached state due to the magnetic force, the face shield 14 is easily separated from the rear body 13.

[0166] On the other hand, a separating protrusion 147 is formed on the face shield 14. The separating protrusion 147 protrudes from the outer surface of the face shield 14 and keeps at least a part of the connecting portion 143 separated from the filter cover 342.

[0167] One or a plurality of the separating protrusions 147 may protrude from the outer surface of the connecting portion 143. The separating protrusion 147 may be formed to protrude or have a curvature. The separating protrusion 147 may be disposed within the area of the filter cover 343.

[0168] In addition, the separating protrusion 147 may be formed long in the front - rear direction on the outer surface of the connecting portion 143. The length of the separating protrusion 147 may correspond to the width (front - rear direction) of the connecting portion 143 where the separating protrusion 147 is located.

[0169] A plurality of the separating protrusions 147 may be formed at intervals. The plurality of separating protrusions 147 may be respectively formed on the left side surface and the right side surface of the connecting portion 143. The plurality of separating protrusions 147 may be configured to be symmetric about a vertical line passing through the center of the face shield 14.

[0170] Specifically, the separating protrusion 147 may include: a first protrusion 1471 formed at the lower position of the left side surface of the connecting portion 143; a second protrusion 1472 formed above the first protrusion 1471; and a third protrusion 1473 formed above the second protrusion 1472.

[0171] The first protrusion 1471 to the third protrusion 1473 may be arranged at intervals from each other in the vertical direction. The first protrusion 1471 to the third protrusion 1473 may be arranged parallel to each other.

[0172] In addition, the first protrusion 1471 to the third protrusion 1473 may extend longitudinally in the front-rear direction on the side surface of the connecting portion 143. At this time, the first protrusion 1471 to the third protrusion 1473 may be formed to have a length corresponding to the width (front-rear direction) of the connecting portion 143.

[0173] As Figure 12 shown, the connecting portion 143 may be formed such that the width in the front-rear direction increases from the lower part to the upper part. Accordingly, the third protrusion 1473 located at the upper part of the connecting portion 143 may be formed to be longer than the first protrusion 1471 located at the lower part of the connecting portion 143.

[0174] In addition, the first protrusion 1471 to the third protrusion 1473 may be arranged within the area of the filter cover 342. This is because, when the user wears the mask device 10, it is possible to prevent a part of the face shield 14 from covering the suction port, that is, the suction grille 343, as the face shield 14 is pressed.

[0175] That is, even if the face shield 14 is pressed by an external force, the first protrusion 1471 to the third protrusion 1473 can keep the face shield 14 separated from the filter cover 342.

[0176] In this embodiment, the first protrusion 1471 is located at a position corresponding to the lower end portion of the filter cover 342, the second protrusion 1472 is located at a position corresponding to the central portion of the filter cover 342, and the third protrusion 1473 is located at a position corresponding to the upper end portion of the filter cover 342.

[0177] In the portion of the face shield 14 that is in close contact with the user's face, through holes 1481 and 1482 for ventilation may be formed. A plurality of the through holes 1481 and 1482 may be formed along the periphery of the close contact portion 142. The through holes 1481 and 1482 may have a circular or non-circular cross-section.

[0178] If the user wears the mask device 10, the close contact portion 142 of the face shield 14 closely contacts and is fixed to the user's face. At this time, in the case of wearing the mask device 10 for a long time, sweat or contaminants may accumulate on the user's face. Therefore, by forming a plurality of through holes 1481 and 1482 in the close contact portion 142 of the face shield 14, it is possible to ventilate the user's face.

Claims

1. A mask device, wherein, Comprising: A mask body, including a rear body and a front body combined with the front of the rear body, forming an inhalation port and an exhalation port; A face shield, combined with the back of the rear body, closely attached to the user's face, and having a breathing space formed inside the face shield; And An air purification module, installed in the rear body, purifying the external air flowing into the inhalation port and supplying it to the breathing space; The face shield includes: A coupling part, facing the back of the rear body; A close-contact part, contacting the user's face; A connecting part, formed to connect the coupling part and the close-contact part, having a predetermined width in the front-rear direction; and A separating protrusion, protruding from the outer surface of the connecting part, keeping at least a part of the connecting part separated from the inhalation port; The inhalation port is formed at a position on the back of the rear body corresponding to the outside of the face shield, The exhalation port is formed at a position on the back of the rear body corresponding to the inside of the face shield, The air flowing in through the inhalation port flows through the inside of the rear body and then flows through the exhalation port into the breathing space.

2. The mask device according to claim 1, wherein The separating protrusion is formed to protrude or have a curvature.

3. The mask device according to claim 1, wherein The separating protrusion extends along the front-rear direction from the outer surface of the connecting part.

4. The mask device according to claim 3, wherein The separating protrusion extends with a length corresponding to the width of the connecting part in the front-rear direction.

5. The mask device according to claim 1, wherein A plurality of the separating protrusions are formed and spaced apart from each other.

6. The mask device according to claim 5, wherein The plurality of separating protrusions are arranged parallel to each other.

7. The mask device according to claim 5, wherein The plurality of separating protrusions are arranged spaced apart in the up-down direction.

8. The mask device according to claim 5, wherein The length of the plurality of separating protrusions in the front-rear direction increases as it approaches the upper part from the lower part of the connecting part.

9. The mask device according to claim 1, wherein The air purification module includes: A filter, placed in front of the inhalation port; and A filter cover, installed in the rear body, covering the filter; The inhalation port is formed in the filter cover.

10. The mask device according to claim 9, wherein The filter cover includes: A filter frame, surrounding the side of the filter; and A filter cover, formed on the back of the filter frame, having an inhalation grille for providing the inhalation port.

11. The mask device according to claim 10, wherein The separating protrusion is arranged within the area of the filter cover.

12. The mask device according to claim 1, wherein The inhalation port is located outside the breathing space, The exhalation port is located inside the breathing space.

13. The mask device according to claim 12, wherein The inhalation port includes a left inhalation port located on the left side and a right inhalation port located on the right side with respect to the face shield, The spaced projections are respectively formed on the left side surface and the right side surface of the connecting portion.

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