Mask

Abstract

The present application provides a mask, by covering the mouth and nostrils of the wearer, and setting an opening part at the lower part of the mask, thereby inhibiting the wearer's own droplets from flying to others, and compared with the general mask of the past, more comfortable breathing can be provided for the wearer. The mask comprises: a mask body covering at least the mouth and nostrils of the wearer, and a wearing part connected with the mask body and used for wearing the mask body on the wearer, the mask body comprises an opening part in the lower part direction than the position opposite to the mouth of the wearer.

Description

Technical Field

[0001] The invention relates to a mask worn on a person's face. Background Art

[0002] In recent years, the wearing of masks has become recommended for preventing viral droplet infections. These masks are designed to protect the wearer from illness and to prevent the spread of droplets such as saliva if the wearer becomes ill. Therefore, it is recommended that the wearer wear the mask tightly (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent No. 6356371 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] However, such masks are sometimes worn while exercising or working, for example, while running outdoors or working in a factory. However, most masks are designed to fit the wearer's face as closely as possible. This poses the problem of breathing difficulties for the wearer while exercising or working while wearing the mask.

[0008] Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a mask that not only suppresses the spread of droplets of the wearer but also ensures easy breathing.

[0009] Technical means to solve the problem

[0010] In order to solve the above-mentioned problem, a mask of one embodiment of the present invention includes: a mask body, which covers at least the wearer's mouth and nostrils; and a wearing part, which is connected to the mask body and is used to wear the mask body on the wearer, and the mask body includes an opening part in a lower direction than a position directly opposite the wearer's mouth.

[0011] Effects of the Invention

[0012] The mask of one embodiment of the present invention covers the wearer's mouth and nostrils and has an opening at the bottom of the mask, thereby suppressing the wearer's own droplets from scattering to others and providing the wearer with more comfortable breathing than conventional general masks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 (a) is a front view showing the usage form of the mask of embodiment 1. Figure 1 (b) is a side view showing the mask of embodiment 1 in use.

[0014] Figure 2 (a) is a front view of the mask according to embodiment 1. Figure 2 (b) is a side view of the mask according to embodiment 1. Figure 2 (c) is a bottom view of the mask of embodiment 1.

[0015] Figure 3 This is an exploded view of the mask.

[0016] Figure 4 (a) is the unfolded front view of the mask. Figure 4 (b) is the unfolded back view of the mask.

[0017] Figure 5 (a) is a front view showing the usage form of the mask of embodiment 2. Figure 5 (b) is a side view showing the usage form of the mask of embodiment 2.

[0018] Figure 6 (a) is a front view of the mask of embodiment 2. Figure 6 (b) is a side view of the mask of embodiment 2. Figure 6 (c) is a bottom view of the mask of embodiment 2.

[0019] Figure 7 This is a schematic diagram schematically showing a method for manufacturing a mask according to a second embodiment.

[0020] Figure 8 (a)~ Figure 8 (h) is a diagram showing another example of the opening.

[0021] Figure 9 (a) is a diagram showing an example of the flow of air during inhalation. Figure 9 (b) is a diagram showing an example of the flow of air during exhalation.

[0022] Figure 10 This is a diagram showing an example in which ventilation holes are provided in the opening portion.

[0023] Figure 11 (a) is a diagram showing a configuration in which a cloth pad is provided on the cheek portion on the back side of the mask. Figure 11 (b) is a side view showing another form of the mask.

[0024] Figure 12 (a) is a perspective view of a mask showing a first example in which the shape retaining member is a belt-shaped member. Figure 12 (b) is related to Figure 12 (a) corresponds to the right side view of the mask.

[0025] Figure 13 (a) is a perspective view of a mask showing a second example in which the shape retaining member is a belt-shaped member. Figure 13 (b) is related to Figure 13 (a) corresponds to the right side view of the mask.

[0026] Figure 14 (a) is a perspective view of a mask according to a third example in which the shape retaining member is a strip-shaped member. Figure 14 (b) is related to Figure 14 (a) corresponds to the right side view of the mask.

[0027] Figure 15 (a) is a perspective view of a mask according to a fourth example in which the shape retaining member is a strip-shaped member. Figure 15 (b) is related to Figure 15 (a) corresponds to the right side view of the mask.

[0028] Figure 16 (a) is a perspective view of a mask according to a fifth example in which the shape retaining member is a strip-shaped member. Figure 16 (b) is related to Figure 16 (a) corresponds to the right side view of the mask.

[0029] Figure 17 (a) is a perspective view of a mask according to a sixth example in which the shape retaining member is a belt-shaped member. Figure 17 (b) is related to Figure 17 (a) corresponds to the right side view of the mask.

[0030] Figure 18 (a) is a perspective view of a seventh example of a mask showing a case where the shape retaining member is a belt-shaped member. Figure 18 (b) is related to Figure 18 (a) corresponds to the right side view of the mask.

[0031] Figure 19 (a) is a perspective view of an eighth example of a mask in which the shape retaining member is a strip-shaped member. Figure 19 (b) is related to Figure 19 (a) corresponds to the right side view of the mask.

[0032] Figure 20 (a) is a perspective view of a ninth example of a mask in which the shape retaining member is a strip-shaped member. Figure 20 (b) is related to Figure 20 (a) corresponds to the right side view of the mask.

[0033] Figure 21(a) is a perspective view of a mask according to a tenth example, showing a case where the shape retaining member is a strip-shaped member. Figure 21 (b) is related to Figure 21 (a) corresponds to the right side view of the mask.

[0034] Figure 22 (a) is a perspective view of a mask according to an eleventh example showing a case where the shape retaining member is a strip-shaped member. Figure 22 (b) is related to Figure 22 (a) corresponds to the right side view of the mask.

[0035] Figure 23 (a) shows a case where the shape retaining member is a strip-shaped member, and is a perspective view of a mask in which the strip-shaped members are arranged on the surface and back surface of the mask body. Figure 23 (b) is related to Figure 23 (a) corresponds to the right side view of the mask.

[0036] Figure 24 (a) is a right side view showing an example of a mask with the opening opened. Figure 24 (b) is a right side view of an example of a mask showing a state in which the opening is closed.

[0037] Figure 25 (a) is a right side view showing another example of a mask with the opening opened. Figure 25 (b) is a right side view of another example of the mask showing a state in which the opening is closed.

[0038] Figure 26 (a) Figure 26 (b) is a right side view showing an example of a mask provided with an anti-deviation member.

[0039] Explanation of symbols

[0040] 1.1b: Mask

[0041] 2: Wearing department

[0042] 10, 10b: Mask body

[0043] 11: Opening

[0044] 11a: Straw insertion part

[0045] 12a, 12b, 12c, 12d: Notches

[0046] 13: Fabric

[0047] 14: Conformal components

[0048] 15: The rest

[0049] 21, 21a, 21b: Adjustment section

[0050] 24, 24a, 24b: Strip-shaped components

[0051] 31: Opening

[0052] 61: Window

[0053] 70: Felt board

[0054] 71: Mesh fabric

[0055] 101: Ventilation Holes

[0056] 111: Gap

[0057] 112, 113: Pad

[0058] 231: Opening cover

[0059] 232: Grip

[0060] 233a, 233b: convex part

[0061] 234a, 234b: Slits

[0062] 251: Anti-drift component

[0063] A, B: Arrows

[0064] X1, X2: length DETAILED DESCRIPTION

[0065] Hereinafter, a mask according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the mask of the present invention is also generally referred to as a face mask. Moreover, in the embodiment, the side of the mask that contacts the wearer is set as the inner side, and the side that contacts the external air is set as the outer side. Furthermore, when the wearer wears the mask, the side close to the wearer's nose is set as the upper part, the side close to the chin is set as the lower part, and the direction connecting the upper part and the lower part is set as the up-down direction (refer to Figure 1 (a) arrow A), and the direction perpendicular to the up-down direction is set as the left-right direction (refer to Figure 1 (b) Arrow B).

[0066] <Implementation Method 1>

[0067] Structure

[0068] Figure 1 This is a diagram showing a mask 1 according to one embodiment of the present invention in use. Figure 1 (a) is a front view of the wearer wearing the mask 1, Figure 1(b) is a side view of the wearer wearing the mask 1. Figure 2 (a) is a front view of the mask 1, Figure 2 (b) is a right side view of the mask 1, Figure 2 (c) is a bottom view of the mask 1.

[0069] like Figure 1 (b) Figure 2 As shown in (b), the mask 1 includes: a mask body 10, and a wearing portion 2 connected to the mask body 10. Figure 1 (a) Figure 1 As shown in (b), the mask body 10 is formed to cover at least the wearer's mouth and nostrils, but can also be configured to cover the cheeks or below the chin. The mask body 10 prevents droplets (exhaled breath) from the wearer's mouth or nose from dispersing forward. Furthermore, the mask body 10 also functions as a filter to minimize the absorption of viruses and other airborne substances drawn in by the wearer.

[0070] The mask body 10 is connected to a wearing portion 2 for fixing to the wearer's face when the wearer wears the mask body 10. An example of the wearing portion 2 is a belt-shaped object. An example of the wearing portion 2 is preferably made of nylon or polyethylene. Figure 1 In the example (b), one end of the wearing portion 2 is connected to one end of the mask body 10 in the left-right direction, surrounds the back of the head, and is connected to the other end of the mask body 10 in the left-right direction. As a result, the mask body 10 is worn tightly on the wearer's face. In addition, the wearing portion 2 can also be an ear-hanging belt component that is hung on the wearer's ear, just like a general mask. This belt component can be elastic, and in this case, the mask 1 can be easily worn on the wearer's face. Moreover, in the wearing portion 2, it can also be as shown in FIG. Figure 2 As shown in (b), the adjustment portion 21 is provided. The adjustment portion 21 is a member capable of adjusting the length of the belt member, and is sometimes also referred to as a cord stopper, a cord adjuster, etc. Figure 2In (b), the strap connecting the mask body 10 on the opposite side is omitted. The donning portion 2 can be connected to the mask body 10 by passing the strap through a hole provided at the end of the mask body 10, or it can be connected by gluing or sewing. The two holes provided at the ends of the mask body 10 for passing the donning portion 2 are preferably smaller than the length connecting the upper and lower ears of a person with a standard body size as defined by the HQL (Human Engineering Quantity Life) Human Life Engineering Center, but this length is not limited to this. By setting the distance between the two holes to be smaller than the length connecting the upper and lower ears of a person with a standard body size as defined by the HQL Human Life Engineering Center, in-plane deformation of the shape-retaining member 14 is suppressed, resulting in a mask 1 that is less likely to leave a gap between the mask body and the wearer. The adjustment portion 21 is adjusted so that it is positioned near the back of the wearer's head when the mask 1 is worn. By adjusting the length of the strap of the donning portion 2, the mask 1 can be made to fit the wearer's face more closely. The donning portion 2 may also include adjustment portions 21a and 21b. Adjustment sections 21a and 21b are identical to adjustment section 21. Adjustment section 21a adjusts the position of the mask body 10 from its right end (the left end as viewed from the wearer), while adjustment section 21b adjusts the position from its left end (the right end as viewed from the wearer). Adjustment section 21a adjusts the position so that it is close to the back of the wearer's left ear, while adjustment section 21b adjusts the position so that it is close to the back of the wearer's right ear. This allows the mask 1 to fit more snugly to the wearer. The presence of adjustment sections 21, 21a, and 21b allows the mask 1 to fit more snugly to the wearer's face, reducing the likelihood of the mask body 10 slipping off the wearer's face during exercise or work.

[0071] Mask body 10 as Figure 1 or Figure 2 As shown, it includes an opening portion 11. As shown in the figure, the opening portion 11 is provided at the lower portion of the mask body 10. Specifically, the opening portion 11 is provided at the lower portion of the mask body 10 in the following manner, that is, when the wearer wears the mask 1, the opening portion 11 is located below the position where the wearer's mouth and the mask body 10 are directly opposite. Here, the position directly opposite the wearer's mouth is the position directly opposite when the wearer opens his mouth. The so-called wearer here is assumed to be a human of the standard body shape specified by the HQL Human Life Engineering Center, but is not limited to this. As an example, the opening portion 11 is provided at the lower portion in the following case, that is, assuming that the mask body 10 includes an upper portion covering the nose, a middle portion covering the mouth and nostrils, and a lower portion covering the chin. More specifically, relative to when the mask body 10 is folded ( Figure 2The total height of the mask body 10 in the state shown in (b) can be set within a range of 30% from the lower end. That is, Figure 2 The ratio of the length X2 (the height of the opening 11 from the lower end of the mask body 10 allowed) shown in (b) to the length X1 (the total height of the mask body 10) can be 30% or less. This prevents droplets from the wearer's mouth from scattering in the direction in front of the wearer. Moreover, by providing the opening 11 in the mask body 10, the wearer can breathe more easily. Furthermore, when running, when the wearer's exhaled breath flows behind, the height of the breath flowing out from the bottom of the mask 1 reaching the face of the following runner can be reduced. The opening 11 can be any size that allows the wearer's exhaled breath to be ejected. The larger the area of ​​the opening 11, the easier it is for the wearer to breathe, but on the other hand, the possibility of droplets, etc., diffusing from the wearer's mouth increases. On the other hand, the smaller the area of ​​the opening 11, the harder it is for the wearer to breathe, but the possibility of droplets diffusing decreases. Therefore, when both the wearer's breathing is easier and the effect of preventing the diffusing of droplets is desired, as an example, the area of ​​the opening 11 can be set to 5±1 cm 2 However, if ease of breathing is prioritized, the area of ​​opening 11 may be larger than this, or if enhanced droplet diffusion prevention is desired, the area of ​​opening 11 may be smaller than this. The opening 11 need not be limited to the position shown if it is not directly opposite the wearer's mouth, and multiple openings 11 may be provided. For example, the openings 11 may be formed as slits along the left and right sides of the wearer's face.

[0072] Figure 3 This is a diagram for explaining the method of manufacturing the mask body 10. Figure 4 (a) is a front view of the mask body 10, Figure 4 (b) is a back view of the mask body 10.

[0073] like Figure 3 As shown, the mask body 10 is made of a shape-retaining member 14 and a fabric 13 whose overlapping area is larger than that of the shape-retaining member 14 .

[0074] The shape-retaining member 14 of the first embodiment can be made of a thermoplastic resin or a thermosetting resin such as polyethylene, polypropylene, nylon, or acrylic resin. For example, it can be made of a wire frame formed of a honeycomb structure using elastic yarn made of a thermoplastic polyester elastomer. The shape-retaining member 14 only needs to have a higher rigidity than the fabric 13, and can also be a woven fabric or a fabric made of fibers. For example, the rigidity of the shape-retaining member 14 can be measured by the rigidity and softness according to the JIS cantilever method in the longitudinal direction ( Figure 1(a) A direction) is more than 150mm, the longitudinal side (wearer side) is more than 150mm, the transverse ( Figure 1 The length of the mask body 10 is 90 mm or more in the B direction of the mask (a) and 90 mm or more in the lateral inner side (wearer side), but it is not limited to this. If the wearer wants the mask to be softer, it can be set below this length. If the shape maintenance of the mask is given priority, it can be set above this length. The shape retaining member 14 is a member that can maintain the mask body 10 in a predetermined shape ( Figure 1 (a) Figure 1 Component having a shape as shown in (b) etc.

[0075] The fabric 13 can be any fabric as long as it can prevent the spread of droplets that may be ejected from the wearer's mouth. For example, nylon, polyester, acrylic resin, and further suitable woven or non-woven fabrics can be used. The fabric 13 preferably has a certain degree of cushioning and is preferably a fabric that feels good to the wearer's skin.

[0076] The mask body 10 is formed by overlapping the shape-retaining member 14 so that it covers the entire front surface, and then wrapping and sewing the shape-retaining member 14 with the remaining portion 15 of the fabric 13. Furthermore, the fabric 13 or the shape-retaining member 14 can be composed of multiple members. That is, the fabric 13 need not be a single piece; for example, two pieces can be sewn together. Similarly, the shape-retaining member 14 can be formed by joining or sewing multiple shape-retaining members.

[0077] The results, such as Figure 4 As shown in (a), except for the opening 11 of the shape-retaining member 14, the entire front surface is covered with a fabric 13, and as shown in FIG. Figure 4 As shown in (b), the end of the shape-retaining member 14 is covered with the fabric 13, so that the part in contact with the wearer's skin is made of the fabric 13, thereby providing a mask 1 with a good skin feel. Figure 4 (a) Figure 4 The diagram (b) shows the mask body 10 unfolded horizontally, but in reality, it forms a three-dimensional shape that covers the lower half of the wearer's face. Furthermore, by constructing the conformal member 14 as a wire frame, air can easily flow in and out of this gap, making it easier for the wearer to exhale through the opening 11.

[0078] like Figure 4As shown in (a), notches 12a and 12b can be formed at the upper end of the mask body 10. Here, the so-called notch refers to a cut or a depression. That is, compared to forming the upper end of the mask body 10 as a straight line, it is set to a concave shape (curved shape). By providing the notches 12a and 12b, the rigidity of the upper end of the mask body 10 can be made discontinuous. The notch 12a is set at a position corresponding to the two sides of the wearer's nose bridge (nose wings). Moreover, the notch 12b is set at a position corresponding to the wearer's cheekbone part. If it is a normal mask, the two sides of the nose bridge and the cheekbone part become parts that are easy to form a gap due to the shape when the wearer wears it. Here, by providing the notch, a structure can be formed in which the notch part is easy to fit closely to the wearer's skin, and the wearer's exhaled breath can be suppressed as much as possible from leaking out of the upper end of the mask 1. Moreover, the notch part can be covered with a highly flexible raw material. The notches 12a and 12b provide a close fit with the wearer. Therefore, by covering them with a highly flexible material, the contact with the wearer is softened and any discomfort caused by the notches constantly contacting the wearer can be reduced. The purpose of providing the notches 12a and 12b is to improve the fit between the upper end of the mask 1 and the wearer's body, preventing exhaled breath from escaping without fogging up glasses or sunglasses, and to direct exhaled breath downward. The wearer's exhaled breath is warmed and generally lighter than the surrounding air, thus flowing upward. In contrast, preventing exhaled breath from escaping from the upper end of the mask 1 allows it to flow downward toward the opening 11. In other words, the notches 12a and 12b are crucial features for ensuring that breath does not escape from the upper end of the mask body 10, but rather flows out through the opening 11.

[0079] Moreover, if Figure 4 As shown in (b), the shape retaining member 14 may also be provided with an opening 31. Since the shape retaining member 14 is not provided in the opening 31, air can pass through this portion more easily than other portions, thereby making it easier for the wearer to inhale and exhale.

[0080] Summary of Implementation 1

[0081] According to the mask 1 shown in Embodiment 1, since the wearer's mouth is directly opposite the mask body 10, droplets discharged from the wearer's mouth can be prevented from scattering around (preventing the spread of droplets). Furthermore, the mask 1 includes a conformable member 14 internally, which facilitates maintaining its mask shape. Furthermore, by forming a space of a predetermined volume around the wearer's mouth, ease of breathing can be achieved.

[0082] Furthermore, by providing the opening 11 in the mask body 10 below the position directly opposite the wearer's mouth, the wearer's exhaled air ejected from the mask 1 can be discharged through the opening 11, thereby making breathing easier (ensuring ease of breathing) compared to conventional masks. Therefore, according to this first embodiment, a mask 1 can be provided that achieves both prevention of droplet diffusion and ease of breathing.

[0083] Furthermore, by providing the notches 12 a and 12 b in the upper end portion of the mask body 10 , it is possible to provide a mask 1 that reduces the possibility of gaps being generated, which are easily generated in conventional masks.

[0084] <Implementation Method 2>

[0085] In the first embodiment, the mask 1 is described as being made by overlapping the outer fabric 13 with the shape retaining member 14 made of a polyester elastomer. In the second embodiment, a mask 1b made of other materials is described.

[0086] Structure

[0087] Figure 5 This is a diagram showing a usage form of a mask 1b according to one embodiment of the present invention. Figure 5 (a) is a front view of the wearer wearing the mask 1b, Figure 5 (b) is a side view of the wearer wearing the mask 1b. Figure 6 (a) is a front view of the mask 1b, Figure 6 (b) is the right side view of the mask 1b. Figure 6 (c) is a bottom view of the mask 1b. The shape of the mask 1b is substantially the same as that of the mask 1 shown in the first embodiment.

[0088] Figure 5 (a) Figure 5 In (b), the wearing portion 2 for wearing the mask 1b by hanging the mask 1b on the wearer's ears is shown as a usage form of wearing the mask 1b, but this is the same as embodiment 1, and the wearing portion 2 can be worn around the back of the wearer's head.

[0089] like Figure 6 (a) Figure 6 (b) Figure 6As shown in (c), the mask body 10b is formed by joining a mesh fabric to a frame made of non-woven fabric such as recycled felt, a window 61 formed by cutting out the frame. The mesh fabric can be joined to the window 61 by attaching, sewing, or other methods. Furthermore, the felt material of the frame portion does not need to be recycled. Made from recycled felt, the frame possesses a certain degree of rigidity, thus functioning as a shape-retaining member. Figure 6 (a)~ Figure 6 In the example shown in (c), a total of four windows 61 are provided, but the number of windows 61 is not limited to four and may be two or six. The window 61 may be provided at any position of the mask body 10 as long as it is not directly facing the wearer's mouth.

[0090] The mask body 10b may also be provided with notches similar to the first embodiment. Figure 6 In the example shown in (b), the mask body 10b is provided with notches 12a and 12b at its upper end portion, a notch 12c is provided at the left and right ends of the mask body 10b, and a notch 12d is provided at the lower end portion. That is, the notches are provided on both sides of the wearer's nose bridge (nose wings) and at positions corresponding to the mask body 10b around the cheekbones at the lower corners of the wearer's eyes. These positions are positions where gaps are easily generated between the mask and the wearer when wearing a normal mask. Therefore, in the case of wearing a general disposable mask extruded into a rectangular shape, the notch can be formed at a position where a gap is easily generated between the mask and the wearer.

[0091] in addition, Figure 6 (a)~ Figure 6 The notch shown in (c) is clearly formed as a cutout. In this shape, there is a possibility of causing pain by contact with the wearer's skin, so a round hole can be processed. As a result, the notch can also be formed as a curved depression as shown in embodiment 1.

[0092] Figure 7 This is a schematic diagram schematically showing a method for manufacturing the mask 1b according to the second embodiment. Figure 7 Next, an example of how to make mask 1b will be described.

[0093] First, if Figure 7 As shown on the left side of the upper section, a felt board (compressed rigid fabric) 70 made of recycled felt is prepared. Figure 7 As shown in the center of the upper section, a plurality of windows 61 are cut out from the felt board 70. Figure 7 As shown in the upper right side, a mesh fabric 71 is prepared and overlapped on the felt board 70. The felt board 70 is not limited to a compression-rigid fabric as long as it has a rigidity sufficient to maintain shape retention.

[0094] Next, if Figure 7 As shown on the right side of the lower section, the overlapping mesh fabric 71 is heat-pressed (heat-sealed) to the felt plate 70 having multiple windows 61. This heat-pressing process is an example, and a separate adhesive can be used for attachment, or sewing can be used. Next, as shown in FIG. Figure 7 As shown in the center of the lower section, the mask body 10b is cut out from the felt plate 70 using the mold of the mask body 10b. Figure 7 As shown on the left side of the lower section, the mask body 10b is cut out and the wearing part 2 for hanging on the ear is sewn to form the mask 1b. In this way, the mask 1b can be manufactured. In addition, Figure 7 In the embodiment, the shape of the mask 1b or the window 61 is simplified. Figure 7 In the case of the method shown, Figure 5 (a) Figure 5 As shown in (b) and the like, the mesh fabric is also joined to the opening 11, but the mesh fabric in the opening 11 may be removed to form a complete opening.

[0095] Summary of Implementation 2

[0096] According to the mask 1b of embodiment 2, in addition to being able to prevent the spread of droplets and ensure easy breathing as in embodiment 1, the mask body 10b can be realized by using recycled felt, thereby providing an environmentally friendly mask 1b. Figure 7 As shown, it also has the aspect of excellent mass productivity.

[0097] <Implementation Method 3>

[0098] In the first embodiment, the shape-retaining member 14 is implemented using a thermoplastic resin or a thermosetting resin such as polyethylene, polypropylene, or acrylic resin. As an example, an example is shown in which a honeycomb-structured wire frame is formed using elastic yarn made of a thermoplastic polyester elastomer. Furthermore, in the second embodiment, a mask 1b is shown that utilizes recycled felt to function as the shape-retaining member.

[0099] In this third embodiment, a configuration will be described in which, unlike in the first and second embodiments, when the mask 1 is formed flat to maintain its shape, a strip-shaped member extending in at least one of the vertical, horizontal, and diagonal directions is used to facilitate maintaining the shape of the mask 1 when the wearer wears the mask 1. The strip-shaped member can be made of the same material as the shape-retaining member shown in the first and second embodiments, or it can be made of another material. However, in this embodiment, a resin thread is used as the strip-shaped member.

[0100] The band-like member 24 is a shape-retaining member designed to maintain the mask 1's shape and maintain a space between the wearer and the mask 1 when the mask 1 is worn. In other words, it should provide increased rigidity and elasticity compared to a mask without the band-like member. Therefore, the band-like member can be made of the same material as the mask body 10, or rigidity can be increased by sewing the band-like member at the locations described below. Furthermore, the band-like member can be any width that improves the rigidity and elasticity of the mask 1; for example, it can be 5 to 15 mm. Furthermore, the band-like member 24 can be sewn to the mask 1 or bonded to the mask 1.

[0101] (Pattern 1)

[0102] Figure 12 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 12 (b) is related to Figure 12 (a) corresponds to the right side view of the mask 1.

[0103] As shown in the figure, Figure 12 In the mask 1 shown in (a), the band-like member 24 extends from the upper end to the lower end of the mask body 10. That is, when worn by the wearer, it extends from a position near the base of the nose to a position near the wearer's chin. The illustrated example shows an example where the band-like member 24 extends vertically through the center of the mask 1. Positioning the band-like member 24 at the center of the mask 1 improves the rigidity and elasticity of the mask 1 compared to a mask without the band-like member 24. Figure 12 (a) Figure 12 In the example shown in FIG. 5 ( b ), the strip-shaped member 24 is suspended from the mask body 10 , that is, it is provided across the opening 11 .

[0104] (Pattern 2)

[0105] Figure 13 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 13 (b) is related to Figure 13 (a) corresponds to the right side view of the mask 1.

[0106] As shown in the figure, Figure 13 In the mask 1 shown in FIG. 1 ( a ), the belt-shaped member 24 extends vertically and is provided from the upper end of the mask 1 to the upper end of the opening 11 . Figure 13 In the example shown, with Figure 12Unlike the example shown, the strip member 24 does not suspend the opening 11. In addition, in order to improve the strength of the lower end portion of the strip member 24 extending to the upper limit, as shown in FIG. Figure 13 (a) Figure 13 As shown in (b), a strip-shaped member 24 is also provided at the edge of the opening 11 and at the upper end of the opening 11. That is, the strip-shaped member 24 provided at the upper end of the opening 11 can be said to extend in the left-right direction relative to the mask 1. The strip-shaped member 24 can also be provided on the mask body 10 in this form. Figure 12 For the example shown, Figure 13 The example shown can be used to improve the rigidity and elasticity of the mask 1.

[0107] (Pattern 3)

[0108] Figure 14 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 14 (b) is related to Figure 14 (a) corresponds to the right side view of the mask 1.

[0109] As shown in the figure, Figure 14 In the mask 1 shown in (a), except Figure 13 In addition to the mask 1 shown, a strip-shaped member 24 extending in the left-right direction is provided in a manner that passes through the center of the mask body 10 in the up-down direction. The so-called center in the up-down direction here does not need to be strictly the center, as long as the strip-shaped member 24 is worn on the mask body 10 in a manner that passes near the nose tip of the wearer when the wearer wears the mask 1. Moreover, the outer end of the strip-shaped member 24 can be constructed to pass near the mounting portion on the lower side of the wearing portion. By adopting this structure, it is easy to maintain the shape of the mask body even when the wearing portion is stretched backward (it can resist the stretching force applied to the wearing portion). Figure 13 Compared with the mask 1 shown, Figure 14 The mask 1 shown has a higher rigidity and elasticity by providing a belt-shaped member 24 extending in the left-right direction.

[0110] (Pattern 4)

[0111] Figure 15 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 15 (b) is related to Figure 15 (a) corresponds to the right side view of the mask 1.

[0112] As shown in the figure, relative to Figure 12 The mask 1 shown, Figure 15 (a) Figure 15 The mask 1 shown in (b) is Figure 14 (a) Figure 14 (b) is similar to the mask body 10, and includes a strip-shaped member 24 that passes through the center in the vertical direction and extends to the left and right. Figure 12 Compared with the mask 1 shown, Figure 15 The mask 1 shown has further improved rigidity and elasticity due to the strip-shaped member 24 extending horizontally.

[0113] (Pattern 5)

[0114] Figure 16 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 16 (b) is related to Figure 16 (a) corresponds to the right side view of the mask 1.

[0115] As shown in the figure, relative to Figure 13 The mask 1 shown, Figure 16 (a) Figure 16 The mask 1 shown in (b) further includes a strip-shaped member 24 at the upper and lower edges of the mask body 10. Figure 16 (a) Figure 16 As shown in (b), by providing a strip-shaped member 24 at the upper or lower edge of the mask body 10, it is not only easy to maintain the shape of the mask 1, but also possible to improve the fit of the mask 1 for the wearer in the upper or lower portion of the mask 1.

[0116] (Pattern 6)

[0117] Figure 17 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 17 (b) is related to Figure 17 (a) corresponds to the right side view of the mask 1.

[0118] As shown in the figure, relative to Figure 12 The mask 1 shown, Figure 17 (a) Figure 17 The mask 1 shown in (b) is Figure 16 (a) Figure 16 (b) Similarly, the upper and lower edges of the mask body 10 include a strip-shaped member 24. Figure 12 The mask 1 shown, Figure 17 (a) Figure 17 The mask 1 shown in (b) is expected to have higher rigidity and elasticity due to the strip-shaped members 24 provided at the upper and lower edges.

[0119] (Pattern 7)

[0120] Figure 18 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 18 (a) corresponds to the right side view of the mask 1.

[0121] As shown in the figure, relative to Figure 16 (a) Figure 16 The mask 1 shown in (b) Figure 18 (a) Figure 18 The mask 1 shown in (b) is further provided with a belt-shaped member 24 extending in an oblique direction. At this time, the belt-shaped member 24 is provided from the upper end portion of the mask body 10 that abuts against the base of the nose of the wearer to the lower end portion of the mask body 10 in a manner that passes near the side of the wearer's nose. Figure 16 (a) Figure 16 The mask 1 shown in (b) Figure 18 (a) Figure 18 The mask 1 shown in (b) has higher rigidity and elasticity. Moreover, by adding the strip-shaped member 24 extending not only in the vertical direction and the horizontal direction but also in the oblique direction, a mask 1 with higher rigidity and elasticity can be provided.

[0122] (Pattern 8)

[0123] Figure 19 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 19 (b) is related to Figure 19 (a) corresponds to the right side view of the mask 1.

[0124] As shown in the figure, relative to Figure 17 (a) Figure 17 The mask 1 shown in (b) Figure 19 (a) Figure 19 The mask 1 shown in (b) is Figure 18 (a) Figure 18 The mask 1 shown in (b) also includes a belt-shaped member 24 extending in an oblique direction. Figure 19 (a) Figure 19 The mask 1 shown in (b) has a greater Figure 17 (a) Figure 17 The mask 1 shown in (b) has higher rigidity and elasticity.

[0125] (Pattern 9)

[0126] Figure 20(a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 20 (b) is related to Figure 20 (a) corresponds to the right side view of the mask 1.

[0127] As shown in the figure, relative to Figure 13 (a) Figure 13 The mask 1 shown in (b) Figure 20 (a) Figure 20 The mask 1 shown in (b) is further configured to include a belt-shaped member 24 extending in an oblique direction. Figure 20 (a) Figure 20 The mask 1 shown in (b) is also provided with a strip-shaped member 24 on the entire edge of the opening 11. Figure 13 (a) Figure 13 Compared with the mask 1 shown in (b), the mask 1 has higher rigidity and elasticity.

[0128] (Pattern 10)

[0129] Figure 21 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 21 (b) is related to Figure 21 (a) corresponds to the right side view of the mask 1.

[0130] As shown in the figure, Figure 21 (a) Figure 21 The mask 1 shown in (b) is Figure 20 (a) Figure 20 In the mask 1 shown in (b), the strip-shaped member 24 extending vertically only from the upper end of the mask 1 to the upper end of the opening 11 is suspended from the opening 11. This structure also provides a mask 1 with high rigidity and elasticity, and in particular, a mask 1 that easily secures space around the wearer's nose and mouth.

[0131] (Pattern 11)

[0132] Figure 22 (a) is a perspective view showing an example of a mask 1 provided with a strip-shaped member 24 as a shape-retaining member. Figure 22 (b) is related to Figure 22 (a) corresponds to the right side view of the mask 1.

[0133] As shown in the figure, relative to Figure 18 (a) Figure 18 The mask 1 shown in (b) Figure 22 (a) Figure 22The mask 1 shown in (b) further includes a strip-shaped member 24 extending in the left-right direction through the vertical center of the mask body 10. As described above, by providing more strip-shaped members 24, a mask 1 with higher rigidity and elasticity can be formed.

[0134] In addition, the examples of using the strip-shaped member 24 to improve the shape retention of the mask 1 are shown using the (pattern 1) to (pattern 11), but the arrangement of the strip-shaped member 24 is not limited to these. Moreover, the strip-shaped member 24 can be arranged on the surface of the mask body 10 as shown in the figure, or it can be arranged on the lining. Moreover, the strip-shaped member 24 can be arranged on both sides of the mask body 10. Moreover, when the strip-shaped member 24 is arranged on both the surface of the mask body 10 and the lining, its length can also be set to different lengths. That is, as shown in FIG. Figure 23 (a) Figure 23 As shown in (b), the length of the strip-shaped member 24 (24a) provided on the surface can be set to the length from the upper end to the lower end (the upper end of the opening) of the mask body 10, and the length of the strip-shaped member 24 (24b) provided on the lining can be set to the length from the upper end of the mask body 10 to the lower end of the opening 11. In addition, regarding the length of the strip-shaped member, Figure 23 In the example, the strip-shaped member 24a provided on the front side is shorter than the strip-shaped member 24b provided on the back side, but the opposite may be true. Figure 23 The mask 1 having the strip-shaped member in the form shown has high shape retention.

[0135] Furthermore, if the proportion of the strip-shaped member 24 to the mask 1 increases, shape retention improves accordingly, but production costs also increase accordingly. Therefore, the amount of strip-shaped member 24 provided to the mask 1 and production costs are in a trade-off relationship.

[0136] Summary of Implementation 3

[0137] According to the mask 1 of the third embodiment, by using the belt-shaped member 24 as the shape-retaining member, the mask 1 can improve its shape-retaining properties (rigidity, elasticity) by using fewer members (smaller area ratio) than in the first or second embodiment. Figures 12 to 22 As shown, by providing the strip members 24 that function as shape-retaining members at locations where the mask 1 needs them, the rigidity and elasticity of the mask 1 can be ensured with a smaller number of strip members 24 .

[0138] Supplementary information

[0139] The mask of the embodiment described above is not limited to the embodiment described above, and can of course be realized by other methods. Various modified examples will be described below.

[0140] (1) The shape of the opening 11 shown in the first and second embodiments is merely an example. As long as the droplets from the wearer's mouth do not spread, the shape of the opening 11 is not limited to those shown in the first and second embodiments, and various shapes may be used. Figure 8 (a)~ Figure 8 In (h), another example of a particularly good shape is shown as the opening 11. Figure 8 (a)~ Figure 8 In (h), the mask body 10b shown in the second embodiment is used for illustration, but the shape of the opening 11 may be various shapes, which is also the case in the first embodiment. Figure 8 (a)~ Figure 8 In (h), the mask 1b is shown as being divided into the left and right sides, but the left and right openings 11 may be formed into one opening when the mask 1b is formed. In addition, the opening 11 may also be used as a straw insertion portion 11a for inserting a member for sucking a drink, such as a straw. That is, Figure 8 As shown in (f), when the opening 11 has a width sufficient for inserting a straw, the wearer can drink beverages without removing or deviating from the mask 1 during exercise or work. Figure 8 As shown in (g), when a plurality of openings 11 are provided, among these openings 11, the openings 11 having a width sufficient for inserting a straw can be used as the straw insertion portion 11a. Figure 8 (a)~ Figure 8 In (e), reference numeral 11a is not provided, but the opening 11 is preferably capable of being used as a straw insertion portion.

[0141] Moreover, the opening 11 is as shown in FIG. Figure 8 (g), Figure 8 As shown in (h), it can be realized by using multiple openings. In this case, the sizes of the openings can be made different. Figure 8 (g), Figure 8 The shape shown in (h) can provide a mask 1 or 1b with excellent design in appearance compared to simply providing an opening.

[0142] (2) Here, the air flow during inhalation and exhalation in the above-mentioned Embodiments 1 and 2 will be described in detail. Figure 9 (a) is a schematic diagram schematically showing the air flow when the wearer inhales. Figure 9 (b) is a schematic diagram schematically showing the air flow when the wearer exhales. Figure 9 In FIG. 1 , an example of wearing the mask 1 b shown in the second embodiment is shown, but the basic air flow is the same in the first embodiment.

[0143] like Figure 9 As shown in (a), when inhaling, the wearer can inhale air through the opening 11 and the window 61. A mesh fabric is joined to the window 61, but the mesh fabric has high air permeability, so air flows in.

[0144] On the other hand, Figure 9 As shown in (b), when the wearer exhales, the wearer's exhaled air is ejected downward toward the wearer's face through opening 11. That is, even if some droplets are ejected from the wearer's mouth, etc. as they exhale, they do not spread in the direction of the wearer's front. Furthermore, the presence of opening 11 allows the wearer's exhaled air to be discharged more smoothly than in the absence of opening 11, making it easier for the wearer to breathe.

[0145] (3) Although not specifically mentioned in the first and second embodiments, a ventilation hole may be provided in the opening 11. The ventilation hole here refers to a mechanism that allows air flow in one direction and blocks air flow in multiple directions. Figure 10 The figure shows an example in which a ventilation hole 101 is provided in the opening 11. As an example, the ventilation hole 101 can be realized by using a thin fabric. Only a part of the end of the ventilation hole 101 is sewn and connected to the periphery of the opening 11 of the mask body 10. Therefore, there is a gap 111 between the ventilation hole 101 and the mask 1. When this structure is included, when the wearer inhales, the outside air flows in through the gap 111. As a result, the ventilation hole 101 is pressed against the opening 11 as a whole, filling the gap 111. On the other hand, when the wearer exhales, a structure can be formed in which the exhaled air is discharged from the inside of the mask body 10 through the gap 111 between the opening 11 and the ventilation hole 101.

[0146] Furthermore, such ventilation holes can also be provided on the inner side (the wearer's side) of window 61 in Embodiment 2. In this case, a structure can be formed that allows air to flow in through window 61 during inhalation, while preventing it from flowing out of window 61 during exhalation. Therefore, during inhalation, the mesh fabric passing through window 61 ensures a certain degree of dustproofing, while during exhalation, rapid exhalation toward opening 11 is achieved (constant air flow generated by exhalation).

[0147] (4) In the first embodiment, a cloth pad may be provided on the inner side of the mask body 10 where the wearer's cheek may come into contact. That is, the mask 1 may be configured so that the wearer's cheek does not directly come into contact with the shape-retaining member 14. Figure 11As shown in (a), a cloth pad 112 can be provided on the inner side of the mask body 10b at a position where the wearer's cheek may come into contact. This cloth pad 112 can be made of the same raw material as the fabric 13, or can be integrally formed with the fabric 13. By setting it as such a structure, the possibility of the shape-retaining member 14 directly coming into contact with the wearer's cheek can be reduced, and the usability of the mask 1 can be improved. Moreover, as the cloth pad 112, a raw material that can impart a cool feeling (contact cool raw materials, such as polyethylene or linen, or cloth using metal, etc.) or a raw material with moisture-absorbing and quick-drying properties (such as a combination of nylon and polyester) can be used. In this case, the wearer's discomfort caused by the heat that easily fills the inside when using the mask 1 can be reduced. Moreover, by stacking the cloth pad 112, since the air resistance to the front increases when the wearer wears it, the effect of air flowing out toward the opening 11 (exhalation) can be expected.

[0148] Moreover, if Figure 11 As shown in (a), a double-layer Raschel pad 113 is included on the inner side of the mask body 10, where the wearer's nose contacts the mask. The use of the double-layer Raschel pad 113 improves the fit of the mask body 10 to the wearer. Furthermore, this improved fit, or tightness, prevents the wearer's exhaled breath from leaking out of the upper end.

[0149] (5) In the embodiment 1, the fabric 13 is as follows Figure 11 As shown in the side view of (b), the fabric 13 can also be extended to the lower end periphery of the opening 11 on the front side of the wearer. By including this structure, the extended part of the fabric 13 becomes an eave, which can apply force in a way that the wearer's exhalation flows out downward.

[0150] (6) In the above embodiment, the shape-retaining member may be a member formed by combining threads such as threads or resin frames to form a surface. Furthermore, the mesh of the shape-retaining member formed of a thermoplastic elastomer, resin, or the like may be partially changed to have the function of suppressing the spread of droplets, and the mask body 10 may be formed without the other fabric 13. In other words, the following structure may be adopted: the mesh of the portion directly facing the wearer's mouth may be made finer to prevent the spread of droplets, while the mesh of other portions may be made coarser to improve air permeability and facilitate breathing.

[0151] (7) The shape of the notch is not limited to the shape shown in the above embodiment, and can be any of a V-shaped, U-shaped, and circular shape. Moreover, as described above, by providing a notch, the rigidity of the end portion of the mask body 10 can be discontinuous. However, from the perspective of achieving discontinuous rigidity, it can also be achieved by combining different raw materials, such as intermittently clamping a low-rigidity raw material. That is, by preparing a mask in which a high-rigidity raw material is used to clamp a low-rigidity raw material, it can be expected that the low-rigidity raw material portion will perform the same function as the notch. In this case, the notch may be provided or not provided.

[0152] (8) The opening 11 of the mask shown in the above embodiment may be an openable and closable structure. That is, the mask 1 may be used in two states: a state in which the opening 11 is blocked, resulting in a high airtightness; and a state in which the airtightness is lower than when the opening 11 is opened or closed.

[0153] Figure 24 (a) Figure 24 (b) is a diagram showing an example of a structure in which the opening 11 of the mask is openable and closable.

[0154] like Figure 24 (a) Figure 24 As shown in (b), the mask 1 includes a mask body 10 and an opening cover 231 between the mesh fabric. Specifically, the mask 1 is constructed using a three-layer structure comprising the mask 10, the opening cover 231, and the mesh fabric. Furthermore, the opening cover 231 is configured to slide freely between the mask 1 and the mesh fabric. Figure 24 (a) Figure 24 In (b), the dotted line indicates the shape of the opening cover 231, which is bilaterally symmetrical when the mask 1 is viewed from the front. Furthermore, the dotted line in the figure indicates the position of the mesh fabric at the nose bridge of the mask. By sewing the mesh fabric to the mask body 10 only at the ends, the opening cover 231 can be moved (slidable) between them.

[0155] Figure 24 (a) shows a state where the opening 11 is exposed, that is, a state where the opening 11 is opened. Figure 24 (b) shows the state where the opening 11 is closed by the opening cover 231. Figure 24 The state shown in (a) is the same as Figure 24 The opening cover 231 is slidable between the states shown in (b).

[0156] Furthermore, the opening cover 231 may include a gripping portion 232 for the wearer to grasp (pinch) in order to facilitate the sliding of the opening cover 231. The gripping portion 232 can be grasped by the wearer and may be of any shape as long as it does not hinder the sliding of the opening cover 231. Figure 24 (a) Figure 24 As shown in (b), if the gripping portion 232 is provided at the lower end of the opening cover 231, it is less likely to hinder the sliding of the opening cover 231, and it is possible to prevent the opening cover 231 from being buried between the mask body 10 and the mesh fabric. Moreover, by providing the opening cover 231, the mask 1 becomes a three-layer structure, and it is expected that the function of the portion other than the opening 11 as a filter, such as preventing the spread of droplets, will be improved. In addition, Figure 24 (a) Figure 24 In (b), the opening cover 231 is configured to span substantially the entire area of ​​the mask body 10 , but it does not need to be of this size and may be a size sufficient to completely cover at least the opening 11 .

[0157] in addition, Figure 24 , an example of providing an opening cover 231 is shown, but the mesh fabric of the opening 11 itself may be configured to slide relative to the mask body 10. In other words, sliding parts that slidably hold both ends of the mesh fabric may be provided on the back side of the mask body 10, so that the mesh fabric can be completely opened by sliding.

[0158] Furthermore, the structure of the opening 11 is not limited to Figure 24 . Figure 25 (a) Figure 25 (b) is a diagram showing another example of a mask 1 having an opening 11 that can be opened and closed. Figure 25 As shown, it can be set as a structure that can be opened and closed using accessories. Figure 25 (a) shows an example in which the opening cover 231 is configured as an accessory and is detachable from the opening 11 , and shows a state in which the opening cover 231 is detached from the mask 1 .

[0159] like Figure 25 As shown in (a), the mask body 10 includes slits 234a and 234b for mounting the opening cover 231. In addition, the number and shape of the slits are not limited to those shown in the figure, as long as the opening cover 231 is mounted.

[0160] and, Figure 25 (b) shows the state where the opening cover 231 is mounted on the mask 1, and the opening 11 is closed. Figure 25As shown in (a), the convex portion 233a provided on the opening cover 231 is fitted into the slit 234a, and the convex portion 233b is fitted into the slit 234b, thereby enabling the opening cover 231 to be mounted on the mask 1 and making it difficult to remove the opening cover 231 from the mask 1. As described above, by making the opening cover 231 freely mountable, it is relatively easy to remove the opening cover 231 from the mask 1. Figure 24 (a) Figure 24 In the case shown in (b), it is easy for the wearer to breathe.

[0161] According to this form, the opening 11 can be set to an openable and closable structure. According to this structure, in places where airtightness is more required as a mask, the opening 11 can be set to a closed state, and in places where airtightness is not currently required, the opening 11 can be set to an open state. As a result, even when the mask 1 is worn, the wearer's breathing can be minimized. In addition, Figure 24 (a) Figure 24 (b) shows an example of installing the opening cover 231 from the opening 11. Alternatively, an additional opening cover having the same size as the mask body, or at least a size that completely covers the opening, can be inserted in a detachable manner between the surface of the mask body and the mesh of the lining (switching between a three-layer structure and a two-layer structure). In this case, as an example, the additional opening mask can be inserted through the insertion port provided at the upper end of the mask body 10, or it can be set to be inserted through the gap between the mesh fabric of the opening 11 and the mask body 10.

[0162] (9) The mask shown in the above embodiment may be provided with a deviation preventing member for suppressing the deviation of the mask caused by vibration or wind when the mask is worn by the wearer.

[0163] That is, the mask 1 is Figure 26 (a) Figure 26 As shown in (b), the inner side of the mask 1, i.e., the side of the mask 1 that contacts the wearer, includes an anti-deviation member 251 that contacts the wearer's skin to prevent vertical deviation. The anti-deviation member 251 can be any member as long as it has a certain coefficient of friction or greater in order to contact the human body to prevent the mask from deviating. Of course, it is preferably made of a material that is harmless to the human body and does not cause discomfort to the wearer when in contact. As an example, a urethane resin foam (sponge) or silicone rubber can be used, but the present invention is not limited to this.

[0164] Furthermore, the anti-deviation member 251 is as shown in FIG. Figure 26 (a) Figure 26As shown in (b), it is ideally positioned so as to abut the upper end of the wearer's cheek, but is not limited to this position. By positioning it so as to abut the wearer's cheek, the upper end of the mask 1 can be more closely fitted to the wearer, and the possibility of the wearer's exhaled air leaking out of the upper end of the mask 1 can be reduced.

[0165] (10) To summarize the mask shown in the above embodiment, one form of the mask of the present invention includes: a mask body that covers at least the mouth and nostrils, and a wearing portion connected to the mask body and used to wear the mask body on the wearer; and the mask body may include an opening portion in a lower direction than a position directly opposite the mouth.

[0166] This can suppress the spread of droplets and the like from the wearer's mouth and facilitate the wearer's breathing.

[0167] Furthermore, in the mask, the opening may be formed at a position where the wearer's exhaled breath is ejected from the wearer's mouth toward the bottom of the mask body.

[0168] This makes it possible to provide a mask with a structure that makes it more difficult to detect droplets and the like from the wearer's mouth.

[0169] Furthermore, the mask may be configured such that the mask body includes an upper portion covering the nose, a middle portion covering the mouth and nostrils, and a lower portion covering the chin, with the opening being provided at the lower portion.

[0170] This allows the mask to determine the location where the opening is to be provided.

[0171] Furthermore, in the above-described mask, the mask body may be formed using a shape-retaining member that enables the mask body to maintain a predetermined shape.

[0172] This allows the shape of the mask to be maintained, creating a space between the mask body and the wearer, thereby improving breathing ease.

[0173] Furthermore, in the mask, the shape-retaining member may include at least recycled felt material.

[0174] Thus, an ecological mask can be provided.

[0175] Furthermore, in the mask, the shape retaining member may further include a thermoplastic resin or a thermosetting resin.

[0176] Furthermore, in the mask, the mask body may include a shape-retaining member, and include a frame portion forming a window portion in the cheek portion, and a mesh fabric joined to the shape-retaining member so as to cover at least the window portion.

[0177] By providing the window portion and joining the mesh fabric, the mesh fabric can improve the ease of breathing and prevent the spread of droplets and the like caused by the mesh fabric.

[0178] Furthermore, in the mask, the mask body may include at least two windows joined with mesh fabrics on the cheeks.

[0179] Furthermore, in the mask, a cover only partially joined to the window portion may be provided.

[0180] The presence of the cover allows the window to be blocked or unblocked during inhalation and exhalation, and allows the air flow to be constant during inhalation and exhalation, thereby improving ease of breathing.

[0181] Furthermore, the mask may be configured such that: in the mask body, the shape-retaining member comprises a thermoplastic resin or a thermosetting resin, and includes: a wire frame formed to cover at least the mouth and nostrils, and a fabric joined to cover at least the periphery of the wire frame.

[0182] This makes it possible to provide a mask that is less likely to collapse in shape.

[0183] Furthermore, in the mask, the thermoplastic resin may be a polyester elastomer.

[0184] Furthermore, in the mask, the wearing portion may include a strap member for hooking on the wearer's ears at the end portions in the left-right direction of the mask body.

[0185] This allows the mask to fit closely to the wearer, making it difficult for the mask to come off the wearer's face.

[0186] Furthermore, in the mask, the wearing portion may include a strap member having ends connected to both left and right ends of the mask body, and the strap member may include an adjustment portion for adjusting the length thereof.

[0187] This makes it possible to provide a mask that fits snugly on the wearer's face regardless of the shape or size of the wearer's head.

[0188] Moreover, in the mask, the mask body may also include a notch at the upper end portion of the mask body and at a position abutting against the nose wing of the wearer.

[0189] This makes it possible to provide a mask in which a gap is unlikely to form between the wearer's face and the mask.

[0190] Furthermore, in the mask, the mask body may include notches at the ends in the left and right directions of the mask body.

[0191] Furthermore, in the mask, the mask body may include a notch at an upper end portion of the mask body and at a position corresponding to a lower corner of the wearer's eye.

[0192] Furthermore, in the mask, the opening may include an exhaust portion.

[0193] Thus, generally, by providing the notches at locations where a gap is likely to form between the mask and the wearer, it is possible to provide a mask in which a gap is unlikely to form between the wearer's face and the mask.

[0194] Furthermore, in the mask, the shape-retaining member may be a strip-shaped member extending in at least one of an up-down, left-right, and right-angled direction relative to the plane when the mask body is regarded as a plane.

[0195] Thus, simply by attaching the strip-shaped member to the mask as a shape-retaining member, the rigidity and elasticity of the mask can be increased, thereby making it easier to maintain the mask's shape and thus ensuring a space between the wearer and the mask. As a result, the mask becomes easier for the wearer to breathe.

[0196] Furthermore, in the mask, the strip-shaped member may be provided from an upper end portion of the mask body abutting near the base of the nose to a lower end portion of the mask body abutting near the chin.

[0197] Alternatively, the strip-shaped member may be suspended from the opening.

[0198] Alternatively, the strip-shaped component may also be arranged on the upper edge of the mask body.

[0199] Alternatively, the strip-shaped component may also be arranged at the lower edge of the mask body.

[0200] Alternatively, the strip-shaped member may be provided at the edge of the opening.

[0201] Alternatively, the strip-shaped member may be arranged from the right end to the left end of the mask body by abutting against the nose tip.

[0202] Alternatively, the strip-shaped member may be arranged from the lower right end to the lower left end of the mask body in a manner that the strip-shaped member abuts against the nose tip.

[0203] Alternatively, the strip-shaped member may be provided from the upper end of the mask body abutting against the base of the nose to the lower end of the mask in a manner passing near the side of the nose.

[0204] As described above, by maintaining the shape of the mask 1 and providing the belt-shaped members at important locations, it is possible to provide a mask 1 that easily maintains its shape and has relatively high rigidity and elasticity.

[0205] Furthermore, the mask may be provided with a deviation preventing member on the side that contacts the human body to prevent the mask from being displaced when worn on the human body.

[0206] This can reduce the possibility of the mask deviating from the wearer, and prevent the wearer from feeling uncomfortable due to the deviation.

[0207] Furthermore, in the mask, the deviation prevention member may be provided at a position of the mask body that abuts against an upper end of the cheek.

[0208] This can prevent the mask from shifting and increase the possibility of preventing the exhaled breath from leaking out from the upper end side of the mask.

[0209] Furthermore, in the mask, the opening may be configured to be openable and closable.

[0210] As a result, for example, when the opening is opened during exercise, the wearer can breathe easily even when wearing the mask, thereby providing a mask that is difficult for the wearer's droplets to spread in a confined space or an environment where many people gather.

[0211] (11) The embodiments disclosed herein are to be considered in all respects as illustrative and non-restrictive. The scope of the present invention is indicated by the claims rather than the description above, and is intended to include all modifications within the meaning and scope equivalent to the claims.

Claims

1. A mask, characterized in that: include: The mask body covers at least the wearer's mouth and nostrils and includes: an upper portion covering the wearer's nose; a middle portion covering the wearer's mouth and nostrils; and a lower portion covering the wearer's chin; and The wearing portion is connected to the mask body and is used to make the mask body wearable on the wearer. The mask body includes an opening portion at a lower position than a position directly facing the wearer's mouth. The opening is provided in the lower portion of the mask body facing the area below the wearer's chin. The mask body has a double-layer structure, including a shape-keeping component that allows air to enter and exit and enables the mask body to maintain a specified shape, and a fabric that covers the front of the shape-keeping component in an overlapping manner. The conformable member is exposed by the opening.

2. The mask according to claim 1, characterized in that The opening is a position where the wearer's exhaled air is ejected from the wearer's mouth toward the bottom of the mask body.

3. The mask according to claim 1 or 2, characterized in that The shape retaining member further comprises a thermoplastic resin or a thermosetting resin.

4. The mask according to claim 3, characterized in that The mask comprises: a wire frame formed in such a manner as to cover at least the mouth and nostrils of the wearer; and The fabric is joined so as to cover at least the outer periphery of the wire frame.

5. The mask according to claim 4, characterized in that The thermoplastic resin is a polyester elastomer.

6. The mask according to claim 1 or 2, characterized in that The wearing portion includes a strap member at an end portion in the left-right direction of the mask body for being hooked on the wearer's ear.

7. The mask according to claim 1 or 2, characterized in that The wearing portion includes a belt member, the ends of which are respectively connected to the left and right ends of the mask body. The belt member includes a plurality of adjustment portions for adjusting the length thereof, and the plurality of adjustment portions are arranged to be located at the back of the head, the back of the right ear, and the back of the left ear of the wearer when the mask is worn.

8. The mask according to claim 1 or 2, characterized in that The mask body includes a notch at the upper end portion of the mask body and at a position abutting against the nose wing of the wearer.

9. The mask according to claim 1 or 2, characterized in that The mask body includes notches at ends in left and right directions of the mask body.

10. The mask according to claim 1 or 2, characterized in that: The mask body includes a notch at the upper end portion of the mask body and at a position corresponding to the lower corner of the wearer's eye.

11. The mask according to claim 1 or 2, wherein: The opening includes a vent.

12. The mask according to claim 1, characterized in that The shape-retaining member is a strip-shaped member that extends in at least one of the vertical, horizontal, and horizontal directions relative to the plane when the mask body is regarded as a plane.

13. The mask according to claim 12, characterized in that The belt-shaped member is provided from an upper end portion of the mask body that contacts the vicinity of the base of the nose of the wearer to a lower end portion of the mask body that contacts the vicinity of the chin of the wearer.

14. The mask according to claim 12 or 13, characterized in that The strip-shaped member is provided from the right end to the left end of the mask body so as to pass through a position abutting against the wearer's nose tip.

15. The mask according to claim 1 or 2, characterized in that: The opening is configured to be openable and closable.

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