Protective clothing
The protective garment addresses the issue of gaps in existing protective clothing by using a fan and filter system to maintain positive pressure and ensure filtered air reaches the wearer's face, significantly enhancing protection against chemicals, bacteria, and viruses.
Patent Information
- Application Number
- JP2021079019
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-03-10
- Filing Date
- 2021-05-07
- Publication Date
- 2025-06-11
- Estimated Expiration
- 2041-05-07
AI Technical Summary
Existing protective clothing struggles to completely block gaps, allowing chemicals, bacteria, and viruses to potentially enter through these openings, especially during donning and doffing.
A protective garment with a body covering the wearer's face, including nostrils, featuring an intake part for filtered air, an exhaust part for air discharge, an intake filter, a fan for introducing purified air, and a power supply for the fan, all designed to maintain a positive pressure inside the garment.
The solution enhances the protective function of the clothing by ensuring only filtered air reaches the wearer's face, reducing the risk of chemical, bacterial, and viral exposure, and maintaining a positive pressure to prevent external air from entering.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention , protection relates to protective clothing.
Background Art
[0002] In recent years, various protective clothing has been developed to protect workers who handle harmful chemicals, medical workers who are exposed to bacteria, viruses, etc., and the like, in order to protect the wearer from chemicals, bacteria, viruses, etc. Such protective clothing is generally formed to cover the body of the wearer using a sheet-like member made of a protective material that does not allow protective objects such as chemicals, bacteria, viruses, etc. to pass through (see, for example, Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Although such protective clothing is formed of a sheet-like member made of a protective material that does not allow chemicals, bacteria, viruses, etc. to pass through, due to the relationship between the wearer putting it on and taking it off, it is difficult to completely block the gaps in such a sheet-like member, and it cannot be denied that chemicals, bacteria, viruses, etc. may enter the inside of the protective clothing together with the outside air through such gaps. Therefore, there has been a demand for further improving the protective function of protective clothing, and such a demand has been further heightened with the recent global spread of covid-19.
[0005] An object of the present invention is to improve the protective function of protective clothing.
Means for Solving the Problems
[0006] In order to solve the above problems, the invention according to claim 1 is a protective garment, a protective garment body formed to cover at least a part of the wearer's face including the nostrils, an intake part for introducing air into the space between the protective garment body and the wearer, an exhaust part for discharging the air in the space to the outside, an intake filter provided in the intake part for filtering external air, a fan for introducing the purified external air into the space through the intake filter, and a power supply part for supplying power to the fan. The protective clothing body includes a main body part that covers the front of the wearer's head. The main body part includes a transparent front part that covers the entire face, an upper surface part that protrudes toward the wearer from the upper end of the front part, and a lower surface part that protrudes toward the wearer from the lower end of the front part. The intake part is provided on the upper surface part. The exhaust part is provided on the lower surface part. The intake part and the exhaust part are provided facing the upper and lower ends of the protective clothing body. It is characterized by this.
[0007] The invention according to claim 2 is the protective clothing as described in claim 1, Make the pressure inside the space positive by introducing air with the fan. It is characterized by this.
[0008] The invention according to claim 3 is the protective 2 as described in claim clothing as described above, The protective clothing body is provided with the fan and the intake part in this order. It is characterized by this.
[0009] The invention according to claim 4 is the protective 2 as described in claim clothing as described above, The protective clothing body is provided with the intake part and the fan in this order. It is characterized by this.
[0010] The invention according to claim 5 is the protective Any one of items 1 to 4 as described in claim clothing as described above, The exhaust part is provided with an exhaust part filter that filters the air inside the space and discharges it to the outside. It is characterized by this.
[0011] The invention according to claim 6 is the protection according to any one of claims 1 to 5 clothing and is characterized in that The protective clothing body is provided with air leakage prevention means for preventing air leakage from the space by closely contacting the wearer's body.
[0012] The invention according to claim 7 is the protection according to 6 and is characterized in that clothing The air leakage prevention means is provided with an elastic body for preventing air leakage at the part that closely contacts the wearer's body.
Advantages of the Invention
[0179] According to the present invention, the protection function of the protective clothing can be improved.
Brief Description of the Drawings
[0180]
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Mode for Carrying Out the Invention
[0181] Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 164. However, the technical scope of the present invention is not limited to the illustrated examples, and various modifications can be made to the embodiments described below without departing from the spirit of the present invention. In the following, based on the state where the wearer wears the protective clothing, the front direction of the wearer is defined as the front, the rear direction of the wearer is defined as the rear, the upward direction of the wearer is defined as the upper, the downward direction of the wearer is defined as the lower, the right hand direction of the wearer is defined as the right, and the left hand direction of the wearer is defined as the left and described. In the description of the manufacturing process of the protective clothing body, the direction is similarly defined and described based on the state where the wearer wears the completed protective clothing body.
[0182] [1 First Embodiment] The protective clothing 100 according to the first embodiment will be described with reference to FIGS. 1 to 8.
[0183] [(1) Description of Configuration] As shown in FIG. 1, the protective clothing 100 according to the first embodiment includes a protective clothing body 1 that covers the upper body of the wearer W, a skirt 2 that covers the lower body of the wearer W, a hat 3 that covers the head of the wearer W, a fan 4 that introduces purified air filtered by a filter into the protective clothing body 1, and a power supply unit 5 that supplies power to the fan 4. The purified air taken into the protective clothing body 1 by the fan 4 is circulated along the face of the wearer and then discharged from an air discharge hole 12 formed near the head of the wearer of the protective clothing body 1.
[0184] [a protective clothing body] As shown in FIG. 1, the protective clothing body 1 is formed of a sheet-like member having no air permeability or only extremely slight air permeability, for example, a clothing material made of a plastic film F1 having a thickness of about 20 μm such as that used for a plastic bag, and is formed in a shape that covers the entire body, arms, and head of the wearer. Also, the hem is long and the lower end can be inserted into the skirt 2. Note that, when the protective clothing body 1 is worn, the surface of the plastic film F1 (the clothing material of the protective clothing body 1) facing the wearer W is defined as the inner surface side of the plastic film F1, and the surface of the protective clothing body 1 on the opposite side facing the external space when worn is defined as the outer surface side of the plastic film F1. Also, the inner surface side of the plastic film F1 and the portion of the protective clothing body 1 located on the wearer W side rather than the inner surface side of the plastic film F1 when the protective clothing body 1 is worn are defined as the inner surface side of the protective clothing body 1, and the outer surface side of the plastic film F1 and the portion of the protective clothing body 1 located on the external space side rather than the outer surface side of the plastic film F1 when the protective clothing body 1 is worn are defined as the outer surface side of the protective clothing body 1.
[0185] Note that, from the viewpoint of preventing air leakage, it is preferable that the protective clothing body 1 is formed so that no seams are formed in the plastic film F1 as the clothing material. Also, the thickness of the plastic film F1 is preferably at most 30 μm at its thickest.
[0186] Also, even if the protective clothing body 1 has a hard portion, at least 200 cm of the area of its clothing material 2It is preferably composed of a material such as the flexible plastic film F1. When 1 L of air is blown into the protective clothing body 1 per second using the fan 4, the pressure around the mouth of the wearer inside the protective clothing body 1 is at least 1 Pascal or more, preferably 3 Pascal or more higher than that outside the protective clothing body 1.
[0187] As shown in FIG. 1, the protective clothing body 1 includes a fan mounting hole 11, an air discharge hole 12, a transparent portion 13, sleeve air leakage prevention means 14, and hem air leakage prevention means 15. The outside air taken in by the fan 4 from the fan mounting hole 11 is discharged from the air discharge hole 12, and is configured such that air does not leak from other than the air discharge hole 12.
[0188] [(a) Fan mounting hole] As shown in FIG. 1, the fan mounting hole 11 is a rectangular hole portion formed at the position in front of the chest of the wearer of the plastic film F1 forming the protective clothing body 1, and when the protective clothing body 1 is worn, it connects the space between the protective clothing body 1 and the wearer's body and the space outside the protective clothing body 1.
[0189] The fan mounting hole 11 is formed to have a rectangular shape with substantially the same size and shape as the outer shape of the container portion 4121 of the main body portion 41 of the fan 4 described later. By attaching the fan 4 so as to pass through the fan mounting hole 11, the fan mounting hole 11 is blocked, and external air can be taken into the space between the protective clothing body 1 and the wearer's body through the filter 432 of the filter portion 43 of the fan 4. As shown in FIG. 3, in order to make it difficult to remove the fan 4, the periphery of the fan mounting hole 11 is reinforced by attaching a reinforcing sheet 111 thicker than the plastic film F1 forming the fabric of the protective clothing body 1.
[0190] [(b) Air discharge hole] The air discharge hole 12 is an opening formed at a position above the head of the wearer of the plastic film F1 forming the protective clothing body 1, for discharging the air introduced into the space between the protective clothing body 1 and the wearer's body by the fan 4 after flowing it along the wearer's face.
[0191] [(c) Transparent part] The transparent part 13 is a part formed in front of both eyes of the wearer of the part covering the head of the wearer of the protective clothing body 1, and is a part with higher transparency than the plastic film F1 forming the other parts of the protective clothing body 1, and is formed by a clear sheet having a transparency such that it does not block the field of view of the wearer W.
[0192] [(d) Means for preventing air leakage in the sleeve part] The means 14 for preventing air leakage in the sleeve part is means provided near the tip of the sleeve part of the protective clothing body 1 for preventing the air in the space between the protective clothing body 1 and the wearer's body from leaking to the outside from the sleeve part of the protective clothing body 1. For example, as shown in FIG. 1, it is formed by passing a rubber string around the hem part of the protective clothing body 1 so that the sleeve part of the protective clothing body 1 adheres closely to the arm part of the wearer W.
[0193] [(e) Means for preventing air leakage in the hem part] The means 15 for preventing air leakage in the hem part is means for preventing the air in the space between the protective clothing body 1 and the wearer's body from leaking to the outside from the hem part of the protective clothing body 1. In the present embodiment, as shown in FIG. 1, it is formed by forming the hem part of the protective clothing body 1 to be long downward. Specifically, as will be described later, since the skirt 2 has a waist belt 21 formed by a rubber string at the upper end part, by putting the long hem part into the skirt 2, air leakage from the hem part of the protective clothing body 1 is prevented. That is, in this case, the hem itself formed long downward so as to be put into the skirt 2 of the protective clothing body 1 functions as the means 15 for preventing air leakage in the hem part.
[0194] Note that, without making the hem portion long, similar to the sleeve air leakage prevention means 14, a rubber string may be provided near the lower end portion of the hem portion so as to go around the protective clothing body 1, thereby forming air leakage prevention means.
[0195] [b Skirt] As shown in FIG. 1, the skirt 2, like the protective clothing body 1, is made of a sheet-like member having no air permeability or only extremely slight air permeability, for example, a clothing material made of a plastic film F1 with a thickness of about 20 μm such as that used for a plastic bag or the like, and is formed to cover from the waist to the feet of the wearer W and to be open at the bottom. Further, it has a waist belt 21 at the upper end portion.
[0196] As shown in FIG. 1, the waist belt 21 is configured such that a rubber string is passed through so as to go around the upper end portion of the skirt 2, and the upper end portion of the skirt 2 is in close contact with the waist of the wearer W. By putting the long hem portion of the protective clothing body 1 into the skirt 2 as described above, the waist belt 21 can prevent air leakage from the hem portion of the protective clothing body 1. Note that, if the rubber string used for the waist belt 21 is adjusted in advance to a length corresponding to the circumference of the wearer W's waist using a spindle or the like, air leakage can be effectively prevented, and at the same time, the discomfort caused by over-tightening can be eliminated.
[0197] [c Hat] As shown in FIGS. 1 and 2, the hat 3 is configured to cover the top of the wearer W's head and has a flange portion 31 in the front.
[0198] As shown in FIG. 1, the flange portion 31 is formed to protrude forward from the front lower end portion of the hat 3, supports the plastic film F1 forming the protective clothing body 1, and forms a space in front of the wearer's face. That is, the flange portion 31 functions as the face portion space securing means in the present invention.
[0199] Further, as shown in FIG. 2, the flange portion 31 has a concave portion at the center in the left - right direction when viewed from above, and through this concave portion, the air introduced into the protective clothing body 1 by the fan 4 can escape upward to the upper part of the flange portion 31 provided with the air discharge holes 12.
[0200] [d fan] As shown in FIGS. 1 and 3, the fan 4 is attached to the fan attachment hole 11 of the protective clothing body 1 and is for introducing the clean air filtered through the filter portion 43 into the space between the protective clothing body 1 and the body of the wearer W. The fan 4 is supplied with the necessary electric power by the power supply portion 5 connected below it.
[0201] As shown in FIGS. 3 to 8, the fan 4 includes a main body portion 41, a pressing member 42, a filter portion 43, and a neck strap 44, and is attached to the protective clothing body 1 by sandwiching the edge portion of the fan attachment hole 11 of the protective clothing body 1 between the main body portion 41 and the pressing member 42.
[0202] Further, the fan 4 blows the clean air filtered by the filter portion 43 into the protective clothing body 1, ideally at about 60 L / min (1 L / s), preferably 20 L or more, and at least 5 L / min or more. Also, it is preferable that the pressure inside the protective clothing body 1 is made at least 1 Pascal or more, preferably 3 Pascal or more higher than the outside.
[0203] [(a) Main body portion] As shown in FIGS. 3 and 4, the main body portion 41 has a fan main body storage portion 411 that houses a fan main body 4111 which is an axial - flow fan having a propeller and a motor for rotating the propeller, and a filter storage portion 412 that houses the filter portion 43. By the rotation of the fan main body 4111 housed in the fan main body storage portion 411, the clean air passing through the filter 432 of the filter portion 43 can be introduced into the protective clothing body 1.
[0204] (Fan main body storage portion) As shown in FIGS. 3 and 4, the fan main body storage part 411 has an opening as an air delivery part 4112, and air is delivered from the air delivery part 4112 by the rotation of the internal fan main body 4111. Further, as shown in FIG. 3(b), it is connected to the filter storage part 412 at the end opposite to the side where the air delivery part 4112 is provided.
[0205] (Filter storage part) As shown in FIGS. 3 and 4, the filter storage part 412 includes a container part 4121 that houses a filter part 43 formed in a rectangular shape, an inner flange 4122 that protrudes inward into the container part 4121, and an outer flange 4123 that protrudes outward from the container part 4121. Also, on two opposing inner surfaces of the container part 4121 (the surfaces that are located vertically inside when attached to the protective clothing main body 1), as shown in FIGS. 4 and 5, corrugated convex parts are formed so as to match the corrugation of the filter part 43 described later, and a filter attachment part 4124 for facilitating the attachment of the filter part 43 is formed.
[0206] [(b) Pusher] As shown in FIG. 6, the pusher 42 is formed as a rectangular frame shape, and includes an inner wall 421 located inside and an outer wall 422 located outside, and a groove part 423 is formed between them. Further, the outer wall 422 has an inner diameter slightly larger than the outer circumference of the container part 4121 of the main body part 41, and the inner wall 421 has an outer shape slightly smaller than the inner circumference of the container part 4121 of the main body part 41, and is configured such that the container part 4121 can be inserted into the groove part 423 as shown in FIG. 3(b). Also, two opposing sides of the inner wall 421 have a corrugated shape in which concave parts and convex parts that match the corrugation of the filter part 43 described later are continuous.
[0207] As shown in Fig. 3(b), insert the container part 4121 of the filter storage part 412 into the groove part 423 of the pusher 42, sandwich the filter part 43 between the inner flange 4122 of the filter storage part 412 and the inner wall 421 of the pusher 42, and sandwich the edge part of the fan mounting hole 11 of the protective clothing body 1 between the outer flange 4123 of the filter storage part 412 and the outer wall 422 of the pusher 42. In this way, the filter part 43 can be attached to the main body part 41 without gaps, and the fan 4 can be attached to the protective clothing body 1 without gaps. At this time, the parts not covered by the plastic film F1 constituting the protective clothing body 1 are only the pusher 42 and the filter part 43.
[0208] [(c) Filter part] As shown in Fig. 7, the filter part 43 is formed by attaching a filter 432 to a reinforcing frame 431 and performing pleating, so that it is rectangular in plan view and has a corrugated shape in which concave and convex parts are continuous in side view.
[0209] (Reinforcing frame) As shown in Fig. 8, the reinforcing frame 431 is formed in a ladder shape by a non-woven fabric and a plastic sheet that can be heat-welded, and is composed of two horizontal bands 4312 corresponding to the left and right struts of the ladder and a large number of vertical bands 4311 corresponding to the steps of the ladder. The vertical bands at both ends are formed with a wide width.
[0210] After adhering a rectangular filter 432 having the same size and shape as the reinforcing frame to the entire reinforcing frame 431 having such a shape, pleating is performed as shown in Fig. 7 so as to have a corrugated shape in which concave and convex parts are continuous, thereby forming the filter part 43. It is easy to form the horizontal band 4312 and the vertical band 4311 of the reinforcing frame 431 as shown in Fig. 7 using general thermoforming technology.
[0211] In addition, since the reinforcing frame 431 of the filter unit 43 is formed in such a ladder shape, most of the filter unit 43 will function as a filter except for certain parts of the reinforcing frame 431. The proportion of the reinforcing frame 431 in the area of the filter unit 43 is preferably small because the effective area will be larger. Considering strength and manufacturing issues, it is desirable that this proportion be 40% or less. Also, regarding the number of vertical strips 4311, it is desirable that there be three or more pleated ridges, that is, seven or more vertical strips 4311.
[0212] (Filter) The filter 432 is a means for filtering the air introduced into the protective clothing body 1 via the fan 4 and removing droplets containing viruses, harmful chemical substances, etc. As shown in FIG. 7, it is pleated together with the reinforcing frame 431 and has a corrugated shape. This can increase the effective area of the filter and improve its effect. As the filter 432, an appropriate and optimal type of filter may be selected according to the protection objects such as viruses, chemical substances, dust, etc. that the wearer W wants to be protected from.
[0213] [(d) Neck strap] The neck strap 44 is a means for attaching the fan 4 to the wearer W. As shown in FIG. 1, by connecting a string-shaped or belt-shaped member to the left and right of the main body part 41, the fan 4 can be configured to be hung around the wearer's neck.
[0214] [e Power supply unit] The power supply unit 5 is a member for supplying power to the fan 4. For example, it incorporates a lithium-ion battery pack with a safety protection circuit and is connected below the fan 4 as shown in FIG. 1. Also, the power supply unit 5 is equipped with a switch for switching the on / off of the power supplied to the fan 4. The specific configuration of the power supply unit 5 is arbitrary as long as it can supply power to the fan 4.
[0215] [(2) Explanation of usage method] Next, the procedures for putting on the protective clothing 100 according to this embodiment before use and taking it off after use will be described.
[0216] [a When putting on] 1 Attach the fan 4 and the power supply unit 5 to the wearer W's chest with the neck strap 44 and turn on the power switch. 2 Put on the hat 3 and then put on the protective clothing body 1. 3 Insert the container part 4121 of the main body part 41 of the fan 4 into the fan mounting hole 11 from the inner surface side of the protective clothing body 1. 4 After storing the filter part 43 in the container part 4121 protruding from the outer surface side of the protective clothing body 1, attach the pressing tool 42. 5 Put on the skirt 2 and put the hem of the protective clothing body 1 into the skirt 2.
[0217] [b When taking off] 1 Take off the skirt 2 and discard it. 2 Remove the pressing tool 42 and put it into a bucket containing disinfectant. 3 Remove the filter part 43 with tweezers and discard it. 4 Take off the protective clothing body 1 and discard it. 5 Take off the hat 3 and remove the main body part 41 of the fan 4 and the power supply unit 5.
[0218] Except for the container part 4121, the main body part 41 of the fan 4 and the power supply unit 5 are all inside the protective clothing body 1, and the container part 4121 is also covered by the pressing tool 42, so it will not be contaminated. Therefore, by taking off the clothing as described above, all parts that may be contaminated will either be discarded or disinfected with disinfectant. In addition, it is more preferable to lightly disinfect the main body part 41 of the fan 4 and the power supply unit 5 as a precaution.
[0219] [(3) Explanation of effects] Next, the effects of the protective clothing 100 according to this embodiment will be described.
[0220] According to the protective clothing 100, the protective clothing body 1 completely covers the upper body of the wearer W including the face (eyes, nose, and mouth). The fan 4 introduces clean air filtered by the filter unit 43 into the protective clothing body 1. The introduced air moves upward along the face of the wearer W through the space ensured by the flange portion 31 of the cap 3 properly forming the shape of the portion of the plastic film F1 forming the protective clothing body 1 corresponding to the face of the wearer, and is discharged from the air discharge holes 12 opened at the portion corresponding to the head of the wearer W.
[0221] As a result, only clean air filtered by the filter unit 43 is always supplied near the face of the wearer. Therefore, the protective function against objects to be protected such as viruses, bacteria, and chemical substances can be improved compared to conventional protective clothing simply formed using a protective material.
[0222] In particular, it is said that the infection of viruses such as COVID-19 occurs by inhaling droplets or aerosols containing the virus, touching the mucous membranes of the eyes or mouth with hands contaminated with the virus, and direct attachment of droplets to the mucous membranes. Therefore, if clean air excluding the virus is supplied after covering the eyes, nose, and mouth of the wearer with the protective clothing 100, the risk of infection is almost eliminated.
[0223] Since the breathing volume of a person is about 6 - 8 L / min, the amount of air introduced into the protective clothing body 1 by the fan 4 should be about 12 L / min, which is sufficient. However, from the perspective of preventing stuffiness, about 1 L per second (60 L per minute) is desirable. Also, the pressure inside the protective clothing body 1 is desirably at least 1 Pascal or more, preferably 3 Pascal or more higher than the outside. If the inside of the protective clothing body 1 is under positive pressure, outside air other than the clean air passing through the filter unit 43 of the fan 4 will not enter the protective clothing body 1. Also, the exhaled breath of the wearer W rides on the air current of the air moving upward and is discharged from the air discharge holes 12 opened in the head, without staying. Further, even when a large amount of air is discharged from the air discharge holes 12 due to the wearer W moving their body greatly, since the protective clothing main body 1 is formed of a thin and flexible plastic film F1, the protective clothing main body 1 shrinks and does not form a large negative pressure. Also, even if a negative pressure is formed and outside air enters from the air discharge holes 12, since the air volume blown by the fan 4 is large, the air entering from the air discharge holes 12 does not reach the position of the wearer's nostrils.
[0224] Moreover, since the entire body of the wearer W is covered with the plastic film F1, droplets do not attach to the skin or the like. Further, during the operation of the fan 4, since the inside of the protective clothing main body 1 becomes a positive pressure, even if viruses or the like are floating around, they do not enter the protective clothing main body 1. Also, since the transparent part 13 is formed by a highly transparent clear sheet at the part corresponding to the eyes of the wearer W, the visibility is also good.
[0225] Also, for the materials of the protective clothing main body 1 and the skirt 2 that need to be discarded after each use, a plastic film F1 such as polyethylene is used, and the processing of each part can also be performed by welding, so the protective clothing main body 1 and the skirt 2 can be provided very inexpensively. Also, if the same material as the plastic film F1 is used for the reinforcing sheet 111 around the fan mounting holes 11 of the protective clothing main body 1 and the clear sheet forming the transparent part 13, they can be melted together and reused.
[0226] [(4) Modification Example] Subsequently, a modification example of the present embodiment will be described.
[0227] [a First Modification Example] The skirt 2 is not limited to covering the entire lower body of the wearer W as shown in FIG. 1, and for example, it may cover only the front facing a virus-infected patient or the like.
[0228] [b Second Modification Example] Small air discharge holes may also be provided near the cuffs and hems of the protective clothing body 1, and by further increasing the air volume blown by the fan 4, it may also serve as a body cooling function. Even with the above-mentioned protective clothing 100, compared with conventional protective clothing, air is constantly introduced by the fan 4, so that stuffiness can be prevented. However, by configuring it as in this modification example, a protective clothing more suitable for use in hot seasons can be realized.
[0229] [2 Second Embodiment] The protective clothing 100A according to the second embodiment will be described with reference to FIGS. 9 to 13. For the parts similar to those in the first embodiment, the same reference numerals will be given and the description will be omitted, and only the parts different from the first embodiment will be described.
[0230] [(1) Description of Configuration] The protective clothing 100A according to this embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0231] [a Protective Clothing Body] The protective clothing body 1A is first formed of a fabric made of a plastic film F2 with a thickness of 40 μm from the viewpoint of strength. Also, as shown in FIGS. 9 and 10, a belt-like member 16 extending in the left-right direction is provided at a position corresponding to the forehead of the wearer of the protective clothing body 1A. The belt-like member 16 is connected to the plastic film F2 forming the fabric of the protective clothing body 1A at both left and right ends. Further, as shown in FIG. 10, the length of the belt-like member 16 is shorter than the length of the opposing plastic film F2.
[0232] As a result, when the belt-like member 16 contacts the forehead of the wearer W, the plastic film F2 corresponding to the face of the wearer is sagged, air is introduced into the protective clothing body 1A by the fan 4A, and when the inside of the protective clothing body 1A becomes a positive pressure, the plastic film F2 of this part bulges, thereby forming a space through which air flows in front of the face of the wearer W. That is, in this embodiment, the belt-like member 16 functions as a means for securing a facial space in the present invention. Therefore, in this embodiment, the wearer W does not need to wear the hat 3 as in the first embodiment.
[0233] In addition, the fan mounting hole 11A is formed in a substantially circular shape according to the shape of the container portion 4121A of the fan 4A described later.
[0234] Furthermore, as shown in FIG. 9, on the left and right sides of the hem of the protective clothing body 1A, there are provided extension portions 17 formed to extend from the lower end portion. As shown in FIG. 9, by taking out such extension portions 17 from the upper end portion of the skirt 2, when taking off the protective clothing body 1A, it becomes possible to pull up the hem portion of the protective clothing body 1A by holding the extension portions 17, and the taking off of the protective clothing body 1A becomes easier. The extension portions 17 are preferably passed through low-height loops 171 formed at positions where they do not enter the skirt 2 above the extension portions 17 of the protective clothing body 1A so as not to be obstructive during the wearing of the protective clothing 100A. Note that the loop 171 is formed by attaching both ends of a belt-like member to the outer surface side of the fabric of the protective clothing body 1A like a general belt loop, so that the extension portion 17 can be passed through and fastened between such a belt-like member and the fabric.
[0235] [b Skirt] The skirt 2A is also formed of a fabric made of a plastic film F2 with a thickness of 40 μm from the viewpoint of strength, similar to the protective clothing body 1A.
[0236] [c Fan] First, in order to house the filter portion 43A-1 having a substantially circular shape in plan view, as shown in FIGS. 11 and 12, the container portion 4121A of the filter housing portion 412A is formed in a cylindrical shape corresponding to the filter portion 43A-1, and further, the inner flange 4122A and the outer flange 4123A are also formed so that their inner and outer circumferences are substantially circular. In addition, the pusher 42A also corresponds to the shape of the container portion 4121A, and the inner wall 421A, the outer wall 422A, and the groove portion 423A are formed in a cylindrical shape having a substantially circular shape in plan view.
[0237] Further, as shown in FIG. 11, the filter unit 43A-1 is formed to be substantially circular in plan view. Different from the filter unit 43 according to the first embodiment, it does not have a reinforcing frame 431, and no pleat processing is performed. The central portion in plan view is formed in a domed shape that bulges upward. In this case, different from the first embodiment, the surface area of the filter is reduced. However, for example, by stacking multiple filters of the same shape with different characteristics, sufficient performance can be ensured. Further, corresponding to the shape of such a filter unit 43A-1, the container portion 4121A of the filter housing portion 412A and the inner wall 421A of the pusher 42A are not provided with portions having a corrugated shape as in the first embodiment.
[0238] [d Power supply unit] As shown in FIG. 9, different from the first embodiment, the power supply unit 5A is not directly connected below the fan 4A, but is separated from the fan 4A and connected to the fan 4A by a power cable 6. For example, as shown in FIG. 9, the power supply unit 5A is housed in the pocket of the undergarment worn by the wearer W inside the protective clothing body 1A. Thereby, since the weight of the power supply unit 5A does not act on the neck of the wearer W, the burden on the neck of the wearer W can be reduced.
[0239] [e Power cable] As shown in FIG. 9, the power cable 6 is a cable that connects the power supply unit 5 and the fan 4A. Through the power cable 6, power necessary for the operation of the fan 4A is supplied from the power supply unit 5 to the fan 4A. The power cable 6 may be any cable that can supply the power necessary for the operation of the fan 4A from the power supply unit 5 to the fan 4A, and its specific configuration is arbitrary.
[0240] [(2) Modification] Subsequently, a modification of this embodiment will be described.
[0241] [a First modification] Instead of the substantially circular and dome-shaped filter part 43A-1 in plan view as described above, a filter part 43A-2 shown in FIG. 13, which is substantially circular in plan view and has concentric concavities and convexities formed by folding, may be used. By doing so, the surface area of the filter can be increased.
[0242] [b Second Modification Example] The plastic film used for the protective clothing body and the skirt may be processed on the surface with a substance such as copper with a high sterilization effect so that pathogenic bacteria, viruses, etc. that are the objects to be protected die out early. In this case, it becomes possible to repeatedly use it without washing or disinfection.
[0243] [c Third Modification Example] For the protective clothing body and the skirt, instead of the plastic film, a non-woven fabric sheet may be used to improve strength and fire resistance. Generally, the non-woven fabric sheet has higher air permeability than the plastic film, but by laminating a very thin plastic film on the non-woven fabric sheet by lamination or the like, air leakage is eliminated and it can be used as the material for the protective clothing body and the skirt of the protective clothing according to this embodiment.
[0244] [d Fourth Modification Example] The mounting location of the fan 4A is not limited to the front of the wearer's chest and may be provided on the back side of the wearer. In this case, since the wearer himself / herself cannot perform the attachment of the pressing tool, etc., assistance from others is required for putting on and taking off, but since there is no fan 4A in the front of the chest, it can be used, for example, for caregiving that requires hugging a person.
[0245] [e Fifth Modification Example] In this embodiment, the case where the belt-like member 16 applied to the forehead of the wearer W is used as the facial space securing means for securing a space in front of the face of the wearer has been described. Instead of this, for example, a plurality of belts may be used in a shape like a hammock used for a work helmet to define the positional relationship between the head of the wearer W and the hood portion that covers the head of the wearer W of the protective clothing body, so as to secure a space in front of the face of the wearer W. Further, a clear sheet for forming the transparent portion 13 may be made into a three-dimensional shape by thermoforming, so that a space is secured in front of the face of the wearer by the clear sheet.
[0246] [3 Third Embodiment] The protective clothing 100B according to the third embodiment will be described with reference to FIGS. 14 to 15. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0247] [(1) Description of Configuration] The protective clothing 100B according to this embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0248] [a Protective Clothing Body] The protective clothing body 1B is not in the form of an upper garment as in the first embodiment, but is formed in the form of an overall one-piece garment that covers the entire body of the wearer W, and an opening / closing means 18 is provided on the front body so as to avoid the fan 4B. Therefore, the protective clothing 100B does not require the skirt 2 as in the first embodiment.
[0249] The opening / closing means 18 is means for opening and closing the front part of the protective clothing body 1B with the protective clothing body 1B being front-opening. The front body of the protective clothing body 1B is divided left and right at the central part in the left-right direction, and, for example, a hook-and-loop fastener or the like is provided on both sides thereof so that the divided part is detachable. Further, the hem air leakage prevention means 15B is formed such that the protective clothing body 1B is in close contact with the ankle of the wearer, for example, by providing a rubber string so as to go around the ankle of the wearer W. Further, the transparent part 13B is divided into left and right parts by the opening / closing means 18, and is formed at positions corresponding to the right eye and the left eye of the wearer, respectively. Further, the material of the clothing fabric of the protective clothing main body 1B may be any material that has no air permeability or has only extremely slight air permeability.
[0250] [b Fan] As shown in FIG. 15(b), the fan 4B is first such that the formation position of the outer flange 4123B of the filter storage part 412B of the main body part 41B is near the middle of the outer surface of the container part 4121B, and a packing 4125 is provided on the side that contacts the protective clothing main body 1B when the outer flange 4123B is attached to the protective clothing main body 1B. Also, as shown in FIGS. 15(a) and (b), the pressing tool 42B is provided with a cover part 424 so as to cover the entire part located on the outer surface side of the protective clothing main body 1B in a state where the fan 4B is attached to the protective clothing main body 1B, with a space left between the pressing tool 42B and the filter part 43.
[0251] Such a cover part 424 can prevent droplets containing viruses and bacteria from directly hitting the filter part 43, and can protect the filter part 43 and further the body of the wearer W from contaminated water and rain. Further, the provision of the packing 4125 can also prevent water from entering through the clothing fabric of the protective clothing main body 1B.
[0252] [(2) Modified Example] Subsequently, a modified example of the present embodiment will be described.
[0253] The fan 4B and the power supply part 5 connected thereto below may be provided on the back side of the wearer W, and the wearer W may carry them on the back like a backpack or a schoolbag. In this case, assistance from others is required during attachment and detachment, but compared with the case of hanging them around the neck with the neck strap 44, it is possible to change the fan 4B and the power supply part 5 to larger and higher-performance ones. Accordingly, an air discharge portion is provided around the ankles and cuffs of the protective clothing body 1B, and the amount of air introduced into the protective clothing body 1B by the fan 4B is increased, so that the cooling function of the wearer W's body can be enhanced.
[0254] [4 Fourth Embodiment] The protective clothing 100C according to the fourth embodiment will be described with reference to FIGS. 16 to 18. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0255] [(1) Description of Configuration] The protective clothing 100C according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0256] [a Protective Clothing Body] As shown in FIG. 16, a second air discharge hole 19 is provided at a position behind the air discharge hole 12 above the head of the wearer of the protective clothing body 1C. Further, as shown in FIG. 16, an opening degree adjustment mechanism 191 for adjusting the opening area of the second air discharge hole 19 is provided around the second air discharge hole 19.
[0257] The opening degree adjustment mechanism 191 includes, for example, a string passing portion formed so as to go around the periphery of the second air discharge hole 19, a string-like member passed through the string passing portion, and a cord stopper or spindle provided at a portion of the string-like member extending from the string passing portion. By adjusting the length of the portion of the string-like member passed through the string passing portion with the cord stopper or spindle, the opening area of the second air discharge hole 19 can be adjusted.
[0258] As shown in FIG. 16(b), when the opening area of the second air discharge hole 19 and the opening degree adjustment mechanism 191 is opened wide, the second air discharge hole 19 is formed so as to open wider than the air discharge hole 12. Note that the string-like member of the opening degree adjustment mechanism 191 includes a belt-shaped one formed in a belt shape, a rubber string, etc., and widely includes an elongated member that can be passed through the string passing portion.
[0259] Also, the cuff air leakage prevention means 14C formed at the cuffs of the protective clothing body 1C is also, as shown in FIG. 17, a string passage portion formed so as to go around the arm of the wearer W, a string-like member passed through the string passage portion, and a cord stopper or spindle provided at a portion of the string-like member that extends from the string passage portion. By adjusting the length of the portion of the string-like member that is passed through the string passage portion with the cord stopper or spindle, the opening area of the opening of the cuff can be adjusted. By this, by adjusting the opening area, it is also possible to form an opening between the sleeve portion of the protective clothing body 1C and the arm of the wearer W, thereby functioning as an air discharge portion.
[0260] The hem air leakage prevention means 15C formed at the hem of the protective clothing body 1C is also, as shown in FIG. 18, a string passage portion formed so as to go around the waist of the wearer, a string-like member passed through the string passage portion, and a cord stopper or spindle provided at a portion of the string-like member that extends from the string passage portion. By adjusting the length of the portion of the string-like member that is passed through the string passage portion with the cord stopper or spindle, the opening area of the opening of the hem can be adjusted. By this, by adjusting the opening area, it is also possible to form an opening between the hem of the protective clothing body 1C and the waist of the wearer, thereby functioning as an air discharge portion.
[0261] [b Fan] The structure of the fan is basically the same as that of the fan 4 according to the first embodiment. However, two types are prepared: one in which the filter portion 43 is attached to the pressing tool 42 and an N95 type filter is used as the filter 432, and one in which a highly air-permeable filter is used, and each is attached to a separate pressing tool 42. As a method of attaching the filter portion 43 to the pressing tool 42, any method can be used, such as a method of non-detachably attaching by adhesion, welding, etc., or a method of detachably attaching by fitting unevenness.
[0262] [(2) Explanation of Effects] Next, the effects of the protective clothing 100C according to this embodiment will be described.
[0263] When using the protective clothing 100C according to this embodiment, first, for example, when it is necessary to prevent airborne infection such as a virus, a pressing tool 42 with a filter unit 43 using an N95 type filter as the filter 432 is used, and at the same time, by tightening any of the opening degree adjustment mechanism 191 of the second air discharge hole 19, the sleeve part air leakage prevention means 14C, and the hem part air leakage prevention means 15C, air is discharged only from the air discharge hole 12 provided in front of the hood part of the protective clothing main body 1C. As a result, the protective clothing 100C can be used in a state with a protective function.
[0264] On the other hand, when the wearer W wearing the protective clothing 100C moves to a hot place and a place with a low risk of airborne infection, etc., the pressing tool 42 with a filter unit 43 using a filter with high air permeability similar to a general mask as the filter 432 is replaced, and the voltage applied to the fan is set high. Furthermore, by loosening any of the opening degree adjustment mechanism 191 of the second air discharge hole 19, the sleeve part air leakage prevention means 14C, and the hem part air leakage prevention means 15C and forming air discharge parts at respective positions, the protective clothing 100C can be used as an air-conditioning clothing having a function of cooling the body of the wearer W.
[0265] Note that for a normal work air-conditioning clothing, the air volume of the fan is preferably 30 L or more per second, but a cooling effect sufficient can be obtained if it is 10 L (600 L per minute) or more per second, unless it is for work under the midsummer scorching sun or performing heavy labor. Also, when using a highly breathable filter while having a sufficient protective function against viruses, etc., which is manufactured with high performance, it is not always necessary to replace the filter, and by adjusting the voltage supplied to the fan motor to change the air volume, it may be possible to switch between using it as a protective clothing and using it as an air-conditioning clothing.
[0266] [5 Fifth Embodiment] The protective clothing 100D according to the fifth embodiment will be described with reference to FIGS. 19 to 23. For the parts that are the same as those in the first embodiment, the same reference numerals will be given and the description will be omitted, and only the parts different from the first embodiment will be described.
[0267] [(1) Description of the configuration] The protective clothing 100D according to this embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0268] [a Protective clothing body] As shown in FIG. 19, the protective clothing body 1D is provided with a fan mounting hole 11D for mounting a fan 4D on the back side of the wearer W.
[0269] [b Trousers] The protective clothing 100D includes trousers 8 formed to cover the lower body of the wearer W instead of the skirt 2. The trousers 8 are formed of a clothing material made of a plastic film F1 in the same manner as the skirt 2, and are provided with a waist belt 81 similar to the waist belt 21 of the skirt 2 at the upper end. By putting the hem portion of the protective clothing body 1D into the trousers 8, it is configured to prevent air leakage from the hem portion of the protective clothing body 1D.
[0270] [c Fan] First, as shown in FIG. 19, the fan 4D is configured such that the wearer W can carry it on the back side in the same manner as a backpack or a schoolbag by means of a belt 45.
[0271] Also, as shown in FIG. 20, the edges of the two opposing sides (the sides that are vertically positioned when attached to the protective clothing body 1D) of the container portion 4121D of the main body portion 41D are curved with the center being convex, and the inner surface side is formed to be slightly lower in height, serving as a filter attachment portion 4124D.
[0272] As shown in FIG. 21, the filter part 43D is of a slightly curved shape without pleating, and is attached to the filter attachment part 4124D of the container part 4121D shown in FIG. 20 so as to follow such a curved filter part 43D. As shown in FIG. 22, the filter part 43D is formed by attaching a flat filter 432D without pleats, as shown in FIG. 21, to a reinforcing frame 431D composed of a horizontal band 4311D and a vertical band 4312D.
[0273] As shown in FIG. 23, the pusher 42D is formed in substantially the same shape as the container part 4121D and with the inner surface slightly larger than the outer surface of the container part 4121D. After attaching the filter part 43D to the container part 4121D, it is configured to be attachable to the main body part 41D so as to cover them. Also, the portion of the pusher 42D that covers the filter part 43 is entirely formed in a mesh shape and serves as a finger guard 425 to prevent the wearer W from accidentally putting a finger into the fan 4D.
[0274] [(2) Explanation of effects] Next, the effects of the protective clothing 100D according to the present embodiment will be described.
[0275] First, since the filter part 43D is not pleated, the processing becomes easy. Also, the contact between the reinforcing frame 431D of the filter part 43D and the contact surface of the container part 4121D is made dense, making it easier to prevent air leakage. Also, compared with the case where pleating is performed, the area of the reinforcing frame 431D in the filter part 43D can be reduced.
[0276] In addition, as shown in FIG. 21, the filter unit 43D is formed in a dome shape with the central part protruding toward the outer surface side of the protective clothing body 1D, and is attached to the container part 4121D of the main body part 41D in such a shape. Since the filter unit 43D is formed in such a dome shape, the pressure resistance of the reinforcing frame 431D increases, and even if a large negative pressure is generated inside the filter unit 43D and a large pressure is applied from the outside, it is difficult to be crushed.
[0277] Further, when the pusher 42D formed with the finger guard 425 shown in FIG. 23 is pushed into the container part 4121D, the contact surface between the container part 4121D and the filter unit 43D comes into close contact, and it is difficult for a gap to occur. Furthermore, since the finger guard 425 is provided, it is possible to prevent the wearer W from inserting a hand into the fan 4D and getting injured, and the risk of the filter unit 43D being damaged by foreign matter is also reduced.
[0278] [6 Sixth Embodiment] The protective clothing 100E according to the sixth embodiment will be described with reference to FIGS. 24 to 30. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0279] [(1) Description of Configuration] The protective clothing 100E according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0280] [a Protective Clothing Body] First, as shown in FIG. 24, the protective clothing body 1E has a shorter hem part and sleeve part compared to the protective clothing body 1 according to the first embodiment. Note that the protective clothing 100E does not have the skirt 2 or the trousers 8, and is formed to cover only the upper part of the upper body of the wearer by such a protective clothing body 1E.
[0281] In addition, the fan mounting hole 11E is formed in a substantially circular shape according to the shape of the fan 4E described later. In addition, the hem air leakage prevention means 15E formed at the hem of the protective clothing body 1E includes a string passage portion formed to go around the wearer's waist, a string-like member passed through the string passage portion, and a cord stopper or a spindle provided at a portion of the string-like member protruding from the string passage portion, which is the same as that of the fourth embodiment.
[0282] As shown in FIG. 24, loop-shaped positioning means 101 is provided above the left and right ends of the clear sheet as the transparent portion 13. By hooking such positioning means 101 on the rod-shaped hook 311 protruding upward provided at the flange portion 31E of the hat 3E, the position of the clear sheet of the transparent portion 13 can be easily adjusted in front of the eyes of the wearer W.
[0283] In addition, as shown in FIG. 24, a straw hole 102 into which a straw can be inserted is formed in the plastic film F1 at a position corresponding to the mouth of the wearer. Further, the periphery of the straw hole 102 is reinforced by a plate-shaped reinforcing member 1021 from the inner surface side of the plastic film F1.
[0284] Such a straw hole is closed by a hole plug 9 shown in FIG. 25 when not in use. Therefore, when the hole plug 9 is removed, the uncontaminated straw hole 102 appears, and it becomes possible to insert a straw and drink a beverage. Further, since the periphery of the straw hole 102 is reinforced from the inner surface side of the plastic film F1 by the plate-shaped reinforcing member 1021, a large hole that can be easily closed by the hole plug 9 can be opened as the straw hole 102, and it is also possible to ingest highly fluid food using a thick straw. Furthermore, if a dedicated straw is used, it is also possible to drink pellet-shaped solid food and tablets.
[0285] In order to prevent infectious diseases, it is important to reduce the number of times of putting on and taking off the protective clothing. With such a straw hole 102, it is possible to eat and drink while covering the face, so that it is only necessary to put on and take off once a day.
[0286] [b Hat] The hat 3E has a brim portion similar to that of the first embodiment. However, as shown in Fig. 24, on the brim portion 31E, there is provided a hook 311, which is a rod-shaped member protruding upward for aligning the position of the clear sheet of the transparent portion 13 in front of the eyes of the wearer W by applying the positioning means 101 of the protective clothing body 1E.
[0287] [c hole plugging] The hole plug 9 is a member for plugging the straw hole 102 when not in use, and as shown in Fig. 25(a), it is configured to include a hole plug body 91 and a loop 92. As shown in Fig. 25(a), the hole plug body 91 is formed in a rectangular plate shape, and includes a covering portion 911 for covering the straw hole 102 and an insertion portion 912 formed to protrude from the covering portion 911 for passing through the loop 92. At the lower end portion in the state of covering the straw hole 102, it is fixed to the outer surface side of the fabric of the protective clothing body 1E. As shown in Fig. 25(a), the loop 92 is a belt-like member. By attaching both ends of the belt-like member to the portion above the straw hole 102 on the outer surface side of the fabric of the protective clothing body 1E in the same way as a general belt loop, it is possible to fix the hole plug 91 in a state of covering the straw hole 102 by passing it through the insertion portion 912 of the hole plug body 91. As shown in Fig. 25(b), when the straw hole 102 is not in use, the hole plug body 91 is fixed in a state of plugging the straw hole 102 by passing the insertion portion 912 of the hole plug body 91 through the loop 92. On the contrary, when the straw hole 102 is not in use, as shown in Fig. 25(c), the insertion portion 912 of the hole plug body 91 is removed from the loop 92, and the hole plug body 91 is made to hang downward, thereby opening the straw hole 102.
[0288] Even when the straw hole 102 is covered by the hole plug 9, there may be a slight gap between the outer surface side of the protective clothing body 1E around the straw hole 102 and the hole plug 9. However, during the use of the protective clothing 100E, the inside of the protective clothing body 1E becomes positively pressurized due to the introduction of air by the fan 4E, so the possibility of this part being contaminated is low. Also, when the hole plug 9 is removed, air inside the protective clothing body 1E will jet out from the straw hole 102, so the possibility of the end face around the straw hole 102 being contaminated by the outside air is low. To further reduce the risk, it is necessary to grasp the left and right or upper and lower opposing end faces of the reinforcing member 1021 through the plastic film F1 which is the fabric of the protective clothing body 1E, and disinfect the vicinity of the straw hole 102 with alcohol or the like. In this case, it is preferable that the reinforcing member 1021 is sufficiently larger than the straw hole 102, and the left and right or upper and lower opposing end faces of the reinforcing member 1021 are located far away from the straw hole 102.
[0289] [d fan] Subsequently, the fan 4E used in this embodiment will be described.
[0290] [(a) Main body part] As shown in Fig. 26, the fan 4E is configured as a fan main body 4111E housed in a fan main body housing part 411E of a main body part 41E, using a centrifugal fan with a small turbo blade having a diameter of about 4 cm, and discharging the air taken in from the front from an air delivery part 4112E on the side surface. The air delivery part 4112E may be provided over the entire side surface, or may be provided only on the upper surface side facing the nose of the wearer W. When provided over the entire side surface, since the air resistance is reduced, the efficiency of air inflow into the protective clothing body 1E is slightly improved. Further, since an air flow can also be formed below the fan 4E, the effect of preventing stuffiness below the fan 4E is enhanced. Note that the blade and the rotation direction are not limited to this, and may be the same as those of an axial fan.
[0291] The centrifugal fan has a small air volume but a high static pressure. Also, unlike the axial flow fan using a propeller, since the air is discharged in the side direction, there is no need to provide a space behind the blade, and the thickness of the entire fan 4E can be reduced.
[0292] In addition, since the breathing volume of a human is usually 6 - 8L per minute, it is desirable that the air volume blown by the fan 4E be about 30L per minute with a margin. If the air volume blown by the fan 4E is about 30L per minute, even if some air leaks from the sleeve air leakage prevention means 14 and the hem air leakage prevention means 15E, no problem will occur. Also, in this embodiment, since the area where the protective clothing body 1E covers the body is small, even if the air volume is small, the body of the wearer W will not get stuffy.
[0293] As shown in FIG. 26, the filter storage part 412E includes a cylindrical container part 4121E, an inner flange 4122E protruding from the inner surface of the container part 4121E, and an outer flange 4123E protruding from the outside of the container part 4121E. On the inner side of the inner flange 4122E, a lattice - shaped filter support 4126 is formed continuously to prevent the filter part 43E from being sucked in. Also, on the main - body - side contact surface C1, which is the contact surface with the filter part located on the side in contact with the filter part 43E of the inner flange 4122E, the first foil electrode 4127 is provided at intervals, and on the outside of the container part 4121E, the first control electrode 4128 is provided.
[0294] [(b) Filter part] As shown in FIG. 27, the filter part 43E is formed by adhering a circular filter 432E to a ring - shaped reinforcing frame 431E made of a plastic sheet. Also, on the filter - part - side contact surface C2, which is the contact surface with the main body located on the surface of the reinforcing frame 431E not adhered to the filter 432E, the second foil electrode 4313 is provided.
[0295] [(c) Pusher] As shown in Fig. 28, the pusher 42E includes an inner wall 421E and an outer wall 422E, and a groove 423E is formed therebetween. Note that the outer wall 422E protrudes higher than the inner wall 421E. Also, a second control electrode 426 corresponding to the first control electrode 4128 of the main body 41E is provided inside the outer wall 422E. Preferably, a predetermined key (not shown) is provided to align the positions of the first control electrode 4128 and the second control electrode 426.
[0296] The pusher 42E also includes a cover portion 424E formed to cover the surface opposite to the side attached to the main body 41E to prevent damage to the filter portion 43E. The cover portion 424E is connected to the inner wall 421E and the outer wall 422E by three connecting columns 427.
[0297] Similar to the first embodiment and the like, the container portion 4121E of the filter housing portion 412E is inserted into the groove 423E of the pusher 42E, the filter portion 43E is sandwiched between the inner flange 4122E of the filter housing portion 412E and the inner wall 421E of the pusher 42E, and the edge portion of the fan mounting hole 11E of the protective clothing body 1E is sandwiched between the outer flange 4123E of the filter housing portion 412E and the outer wall 422E of the pusher 42E. In this way, the filter portion 43E can be attached to the main body 41E without gaps, and the fan 4E can be attached to the protective clothing body 1E without gaps.
[0298] At this time, when the filter portion 43E is placed in the container portion 4121E of the main body 41E in such a direction that the main body-side contact surface C1 formed on the inner flange 4122E of the main body 41E and the filter portion-side contact surface C2 formed on the reinforcing frame 431E of the filter portion 43E are in contact, and the pusher 42E is attached, the reinforcing frame 431E of the filter portion 43E is pressed by the end of the inner wall 421E of the pusher 42E, and the filter portion-side contact surface C2 formed on the reinforcing frame 431E of the filter portion 43E strongly contacts the main body-side contact surface C1 formed on the inner flange 4122E of the main body 41E, eliminating the gap through which air can enter.
[0299] Also, at this time, the first foil electrode 4127 and the second foil electrode 4313 come into contact with each other, and an electric conduction circuit is connected between the main body portion 41E and the filter portion 43E. Therefore, it becomes possible to warn of the omission of attachment of the filter portion 43E. Furthermore, at this time, the first control electrode 4128 and the second control electrode 426 are connected, and an electric conduction circuit is connected between the main body portion 41E and the pusher 42E. Therefore, it becomes possible to attach, for example, an operation portion for performing a predetermined operation or a display portion for performing a predetermined display to the cover portion 424E of the pusher 42E.
[0300] [e Power supply unit] Similar to the second embodiment and the like, as shown in FIG. 24, the power supply unit 5A is not directly connected below the fan 4E unlike the first embodiment, is separated from the fan 4E, and is connected to the fan 4E by a power cable 6.
[0301] [f Power cable] The power cable 6 is a cable that connects the power supply unit 5A similar to the second embodiment and the like and the fan 4E.
[0302] [(2) Explanation of usage method] Next, the procedure for dressing before using the protective clothing 100E according to the present embodiment will be described.
[0303] 1. Wear the main body portion 41E of the fan 4E in which the filter portion 43E is temporarily stored on the body, store the power supply unit 5A connected by the power cable 6 in a pocket or the like, and turn on the power. 2. Put on the hat 3E and then put on the protective clothing main body 1E. Since the hem and sleeves of the protective clothing main body 1E are short, it can be easily put on. 3. By connecting the hook 311 of the hat 3E and the positioning means 101 of the protective clothing main body 1E, the positional relationship between the face of the wearer W and the hood portion of the protective clothing main body 1E is optimized. 4. Tighten the hem air leakage prevention means 15E at the hem portion of the protective clothing main body 1E. Insert the container part 4121E of the main body part 41E of the fan 4E from the inner surface side of the protective clothing main body 1E into the fan mounting hole 11E, attach the pressing tool 42E to the container part 4121E protruding from the outer surface side of the protective clothing main body 1E, and eliminate the gaps between the filter part 43E and the main body part 41E and between the fan mounting hole 11E and the main body part 41E.
[0304] Note that by using a centrifugal fan for the fan 4E, it can be made smaller and lighter compared to the first embodiment and the like. Therefore, it is also possible to attach the main body part 41E and the filter part 43E of the fan 4E to the protective clothing main body 1E in advance, and then attach the pressing tool 42E, and then wear the protective clothing main body 1E. In this case, it is also possible to prevent the fan 4E from being worn on the body using the neck strap 44.
[0305] [(3) Explanation of effects] Next, the effects of the protective clothing 100E according to the present embodiment will be described.
[0306] First, according to the present embodiment, since the wearer W does not need to use medical goggles or a medical mask, the discomfort of the wearer W can be significantly alleviated compared to the case of using them.
[0307] Also, since the protective clothing 100E can be worn while eating and drinking using the straw hole 102, it is only necessary to take off the protective clothing 100E once a day. Furthermore, since the filter part 43E is covered by the cover part 424E of the pressing tool 42E, it will not be damaged, and even if it receives a large amount of droplets from a patient infected with a virus or the like, the droplets received from the patient will not directly hit the filter part 43E.
[0308] Also, since the wearer W cannot touch the face due to the protective clothing main body 1E, it is possible to prevent infection with a virus from mucous membranes such as the eyes. Furthermore, each electrode provided on the fan 4E can prevent the filter unit 43E from being forgotten, and the wearer W can perform various electrical operations on the fan 4E by means of an operation unit, a display unit, etc. attached to the cover portion 424E of the pusher 42E.
[0309] [(4) Modification Example] Subsequently, a modification example of the present embodiment will be described.
[0310] [a First Modification Example] As in the protective clothing 100F shown in FIG. 29, the protective clothing body 1F may be configured to cover only the upper part of the wearer's neck. In this case, the air leakage prevention means may include only the neck air leakage prevention means 103 configured to surround and seal the periphery of the wearer's neck.
[0311] [b Second Modification Example] As in the protective clothing 100G shown in FIG. 30, the protective clothing body 1G may be configured to cover only the wearer's face. In this case, the air leakage prevention means may include only the head air leakage prevention means 104 configured to surround and seal the periphery of the wearer's head from near the jaw to the side of the face and the hat.
[0312] [7 Seventh Embodiment] The protective clothing 100H according to the seventh embodiment will be described with reference to FIGS. 31 to 33. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0313] [(1) Description of Configuration] The protective clothing 100H according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0314] [a Protective Clothing Body] First, as shown in FIG. 31, the protective clothing body 1H is formed to cover only the head above the wearer W's neck. Note that the protective clothing 100H does not have the skirt 2 or the trousers 8, and is formed to cover only the head of the wearer by such a protective clothing body 1E.
[0315] Further, the protective clothing body 1H is formed with straw holes 102 similar to those in the sixth embodiment, enabling the wearer to drink beverages while wearing the protective clothing 100H. In this embodiment as well, the straw holes 102 are blocked by a hole plug 9 when not in use.
[0316] Also, as the neck air leakage prevention means 103H, it is configured to seal the neck by winding a bandage. It is preferable to use a highly elastic bandage with hook-and-loop fasteners attached to both ends. Note that the neck air leakage prevention means is not limited to this, and other general methods such as using the above-mentioned rubber cords, cord passes, cord stoppers, etc. can be used.
[0317] In order to prevent airborne infection by viruses and bacteria and infection through mucous membranes, it is necessary to cover the face. Also, in order to reduce the places where air leaks, it is reasonable to make the only part where there may be leakage the neck. Moreover, the neck is different from the torso in that its surrounding length is short and it is easy to prevent air leakage. Therefore, by making the location where such air leakage prevention means needs to be formed only around the neck and providing the neck air leakage prevention means 103H at that location, air leakage from the protective clothing body 1H can be effectively prevented.
[0318] [b Belt for Head] The head belt 7 is a belt-shaped member that is worn on the wearer W so as to go around the head as shown in Fig. 31. In this embodiment, instead of the hat 3 in the first embodiment etc., the head belt 7 is provided.
[0319] Since the head belt 7 has a length adjustment means 71 as shown in Fig. 32, by adjusting the length using the length adjustment means 71, it can be set to a length that matches the outer circumference of the wearer W's head and attached in a stable state so as to go around the wearer W's head.
[0320] Also, as shown in FIGS. 31 and 32, belt-side positioning means 72 is provided on the left and right of the front part of the head belt 7. By applying the positioning means 101 provided on the protective clothing body 1H in the same manner as in the sixth embodiment, the positioning of the clear sheet as the transparent part 13 can be achieved. At the same time, since the belt-side positioning means 72 protrudes forward from the head of the wearer W, it also has a function of creating a space for air to flow by leaving a gap between the face of the wearer and the polyethylene film P as the clothing material of the protective clothing body 1H. That is, in the present embodiment, the belt-side positioning means 72 of the head belt 7 functions as the facial space securing means in the present invention.
[0321] [c Fan] The fan used in this embodiment is the same fan 4E with a built-in centrifugal fan as in the sixth embodiment.
[0322] [d Power supply unit] The power supply unit 5A, as in the second embodiment and the like, as shown in FIG. 31, is not directly connected below the fan 4E unlike the first embodiment. It is separated from the fan 4E and is connected to the fan 4E by a power cable 6.
[0323] [e Power cable] The power cable 6 is a cable that connects the power supply unit 5A and the fan 4E, which are the same as in the second embodiment and the like.
[0324] [(2) Explanation of usage method] Next, the procedure for putting on the protective clothing 100H according to this embodiment before use will be explained.
[0325] 1. First, insert the main body part 41E of the fan 4E into the fan mounting hole 11E of the protective clothing body 1H, attach the pressing tool 42E, and further attach the power cable 6. Note that the fan 4E is not worn on the body of the wearer W. 2. Wrap the head belt 7 around the head and put on the protective clothing body 1H. Connect the power supply unit 5A to the end of the power cable 6 opposite to the side connected to the fan 4E, and start the fan 4E. 4 Connect the belt side positioning means 72 of the head belt 7 and the positioning means 101 of the protective clothing body 1H. 5 Wrap a stretchable bandage with hook-and-loop fasteners attached to both ends around the neck to form the neck air leakage prevention means 103H. The power cable 6 exits downward from the covered part around which the bandage is wrapped.
[0326] [(3) Explanation of the manufacturing method] Next, the procedure for manufacturing the protective clothing body 1H of the protective clothing 100H according to the present embodiment will be described with reference to FIG. 33. Note that, for simplicity of production, the polyethylene film P is used for the protective clothing body 1H, and adhesion and connection are performed by welding.
[0327] [a Step 1] As shown in FIG. 33(a), prepare a rectangular polyethylene film P with high transparency, open the air discharge holes 12 in the lower half part as shown in the figure, attach a clear sheet as the transparent part 13, adhere the reinforcing member 1021 for the straw hole 102, drill holes in the reinforcing member 1021 and the polyethylene film P together, and open the straw hole 102. Further, open the fan mounting hole 11E and adhere a circular ring-shaped reinforcing sheet 111H for reinforcing the periphery thereof.
[0328] [b Step 2] As shown in FIG. 33(b), fold the polyethylene film P at the central part in the vertical direction, join it at the first joining lines J1 on both the left and right sides, and then cut the outside. Note that the lower end remains open.
[0329] [c Step 3] As shown in FIG. 33(c), fold the polyethylene film P joined and cut in Step 2 so that a crease appears in the portion located at the center in the left-right direction of each surface, and then re-fold it so that it is long in the front-back direction and flat in the left-right direction. Since the lower end is open, the lower portion can be easily folded in this way. Then, join it at the second joining line J2 and cut the lower portion to have the shape shown in FIG. 33(c).
[0330] [d Step 4] As shown in FIG. 33(d), after returning the polyethylene film P joined and cut in Step 3 to be long in the left-right direction and flat in the front-back direction again, similar to FIG. 33(b), perform a small process near the upper end portion to shape it.
[0331] [8 Eighth Embodiment] The protective clothing 100I according to the eighth embodiment will be described with reference to FIGS. 34 to 35. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0332] [(1) Description of Configuration] The protective clothing 100I according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0333] [a Protective Clothing Body] As shown in FIG. 34, the protective clothing body 1I is formed to cover only the head above the neck of the wearer W, and a spacer 105 is provided on the inner surface side of the portion corresponding to the head of the wearer W. Further, the lower end portion of the protective clothing body 1I is fixed, for example, to the clothes worn by the wearer under the protective clothing body 1I by a clip K. Since the protective clothing body 1I is provided with the spacer 105 and the spacer 105 functions as a means for securing a facial space that secures a space between the fabric of the protective clothing body 1I and the face of the wearer W, in the present embodiment, the wearer W does not need to wear the hat 3.
[0334] The fabric of the protective clothing body 1I is formed of a polyethylene film P having a thickness of about 20 μm, such as that used for garbage bags. By using the polyethylene film P having a thickness of about 20 μm for the protective clothing body 1I, the following advantages can be obtained.
[0335] For example, when the air volume blown from the fan 4E is set to about 30 L per minute, which is more than three times the breathing volume of the wearer W per minute, the maximum instantaneous inhalation volume when the wearer W takes a deep breath becomes larger than the air volume blown from the fan 4E. Therefore, if the protective clothing body 1I is made of a material that is difficult to deform, it cannot be denied that outside air flows into the protective clothing body 1I from the air discharge holes 12 and the wearer W inhales the outside air. On the other hand, if the protective clothing body 1I is made of a soft film such as the polyethylene film P that is easy to deform, the protective clothing body 1I deforms even with a slight negative pressure, so the inflow volume of outside air from the air discharge holes 12 becomes extremely small.
[0336] Also, as described above, since such a polyethylene film P is generally used for garbage bags, if the one used as the material for garbage bags is obtained and used, a material that is inexpensive, strong, and airtight can be obtained. From these points, it can be said that the polyethylene film P is an optimal material.
[0337] In the protective clothing body 1I according to the present embodiment, the air discharge holes 12 are provided behind the head of the wearer W, and a spacer 105 for securing an air circulation space is provided in front of the air discharge holes 12. Therefore, even if a small amount of outside air flows in from the air discharge holes 12 when the wearer W takes a deep breath or the like, such outside air stays in the space secured by the spacer 105 and is immediately discharged from the air discharge holes 12, so it does not reach the nostrils of the wearer W.
[0338] The spacer 105 can be any as long as it can maintain the interval between the polyethylene film P constituting the hood portion of the protective clothing body 1I and the head of the wearer W. For example, it may be configured by attaching a thick sponge or the like to the inner surface side of the fabric of the protective clothing body 1I. In FIG. 34, the case where four spacers 105 are provided in two rows each in the front, rear, left, and right directions is illustrated, but the number of spacers 105 provided is not limited to this.
[0339] As shown in FIG. 34, at a position corresponding to the mouth of the wearer W, straw holes 102 similar to those in the sixth and seventh embodiments are formed, and it is possible to drink a beverage while wearing the protective clothing 100I. In this embodiment as well, the straw holes 102 are closed by a hole plug 9 when not in use. Also, at a position corresponding to the ears of the wearer W, stethoscope holes 106 for using a stethoscope while the wearer W is wearing the protective clothing 100I are provided. The stethoscope holes 106 also have a structure provided with a reinforcing member 1061 similar to that of the straw holes 102, and may be closed by the hole plug 9 when not in use.
[0340] The neck air leakage prevention means 103H is formed, as in the seventh embodiment, by forming a long portion of the polyethylene film P constituting the protective clothing main body 1I corresponding to the neck of the wearer W and then winding a bandage around it. Note that if the air volume of the fan 4E is sufficiently large, even if air leaks from the neck, there is no problem as long as the amount of leakage is small.
[0341] [b Fan] The fan used in this embodiment is the same fan 4E with a built-in centrifugal fan as in the sixth and seventh embodiments.
[0342] [c Power supply unit] The power supply unit 5I, as in the second embodiment and the like, as shown in FIG. 34, unlike the first embodiment, is not directly connected below the fan 4E, is separated from the fan 4E, and is connected to the fan 4E by a power cable 6. However, in this embodiment, only one terminal for charging and discharging is provided, and a power switch or the like is not provided.
[0343] [d Power cable] The power cable 6 is a cable that connects the power supply unit 5I and the fan 4E, similar to that in the second embodiment and the like. Also, in this embodiment, the power cable 6 is fixed to, for example, the clothes worn by the wearer under the protective clothing body 1I by a clip K similar to the one that fixes the lower end of the protective clothing body 1I.
[0344] [(2) Explanation of usage method] Next, the procedures for putting on the protective clothing 100I according to this embodiment before use, when using the straw hole 102, taking it off after use, and preparing for the next use after taking it off will be explained.
[0345] [a When putting on] First, the procedure for putting on the protective clothing 100I and starting use will be explained. 1 Attach the fan 4E to the fan mounting hole 11E and attach the power cable 6 to the fan 4E. 2 Wrap a bandage around the neck of the wearer W if necessary (to eliminate the discomfort caused by the direct contact of the polyethylene film P forming the protective clothing body 1I with the neck). 3 Wear the protective clothing body 1I on the head. 4 Insert the terminal of the power cable 6 into the terminal of the power supply unit 5I and start blowing air. 5 Wrap a bandage from above the polyethylene film P of the protective clothing body 1I to form the neck air leakage prevention means 103H. 6 If necessary, fix the part near the fan 4E of the protective clothing body 1I and the power cable 6 in place with the clip K.
[0346] [b When using the straw hole] Next, the procedure for drinking a beverage using the straw hole 102 will be explained. The straw hole 102 is blocked by the hole plug 9 when not in use, and since the inside of the protective clothing body 1I is under positive pressure during the use of the protective clothing 100I, the possibility of the straw hole 102 being contaminated by viruses or the like is low. However, the procedure for reducing the risk of further infection by viruses or the like will be explained based on FIG. 35. As shown in Fig. 1 (a), the straw hole 102 is left open without being blocked by the hole plug 9. As shown in Fig. 2 (b), the funnel-shaped tool R formed in a funnel shape is inserted into the straw hole 102. 3 Insert the straw S into the funnel-shaped tool R. By using the funnel-shaped tool R in this way, the risk that the tip of the straw S pierces the surface of the polyethylene film P that serves as the fabric of the protective clothing body 1I can be significantly reduced.
[0347] [c When taking off the protective clothing] Next, after the use of the protective clothing 100I, the procedure for taking it off will be described. 1 Remove the bandage of the neck air leakage prevention means 103H. 2 Remove the power supply unit 5I. 3 Take off the protective clothing body 1I. 4 Remove the fan 4E and the power cable 6 from the protective clothing body 1I, and discard the filter parts 43E of the protective clothing body 1I and the fan 4E.
[0348] [d After taking off the protective clothing] Next, after taking off the protective clothing 100I, the preparation procedure for the next use will be described. 1 Attach a plug to block the terminals so that the disinfectant liquid does not penetrate into the power supply unit 5I. 2 Immerse the power supply unit 5I with the attached plug, the power cable 6, and the pusher 42E of the fan 4E in the disinfectant liquid. 3 After the disinfection of the power supply unit 5I is completed, remove the plug blocking the terminals and charge it.
[0349] Note that as described above, the power supply unit 5I is not provided with a switch for the following three reasons. 1 Turning the power on and off only requires plugging and unplugging the power cable 6. 2 If the wind speed of the fan 4E is increased too much, the capture rate of droplets etc. by the filter will decrease. On the contrary, if the wind speed of the fan 4E is decreased too much, problems will occur in the breathing of the wearer W. Therefore, it is necessary to fix it to the optimally adjusted air volume, and the wearer W should not be able to change the wind speed. 3 The structure is simplified, and it is possible to prevent the intrusion of the disinfection liquid during disinfection.
[0350] Also, although it is possible to apply a waterproof treatment around the terminals of the power supply unit 5I to prevent the intrusion of the disinfection liquid, by using a dedicated plug, it is possible to prevent forgetting to disinfect or charge. From this perspective, it is better to use a dedicated plug for the power cable 6 as well to prevent corrosion by the disinfection liquid inside the plug.
[0351] [(3) Modification Example] At the air discharge hole 12I, in order to eliminate the extremely slight possibility that the wearer W takes a sudden and deep breath and the deformation of the polyethylene film P forming the protective clothing body 1I cannot keep up, and a large amount of outside air flows in, the air discharge hole 12I may be covered from the outer surface side of the protective clothing body 1I, and a valve for preventing air from flowing into the air discharge hole 12 from the outer surface side of the protective clothing body 1I may be provided.
[0352] [9 Ninth Embodiment] The protective clothing 100J according to the ninth embodiment will be described with reference to FIGS. 36 to 38. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0353] [(1) Description of the Configuration] The protective clothing 100J according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0354] [a Protective Clothing Body] As shown in FIG. 36, the protective clothing body 1J is formed to cover only the head above the neck of the wearer W, and a buffer portion 107 is provided below the fan mounting hole 11E to which the fan 4E is mounted. Also, a breathing rectifier 108 is provided at a position covering the nose of the wearer W.
[0355] Further, the portion of the protective clothing body 1J excluding the buffer portion 107 is composed of a non-deformable portion M made of a rigid material that does not deform due to the pressure inside the protective clothing body 1J. The buffer portion 107 is a portion that easily deforms due to the pressure inside the protective clothing body 1J, and is a flexible film with a thickness of several μm and is formed to have a capacity of about 300 ml.
[0356] As shown in Fig. 37(a), the breathing rectifier 108 is provided with an opening 1081 on the side facing the wearer's face, an intake valve 1082 below, and an exhaust valve 1083 above. As shown in Figs. 36, 37(b), and 37(c), it is provided on the protective clothing body 1J so as to completely cover the nose portion including the nostrils of the wearer W and be able to be in close contact with the wearer's face. As a result, the space below the breathing rectifier 108 and the space above it inside the protective clothing body 1J are completely separated.
[0357] Both the intake valve 1082 and the exhaust valve 1083 are configured to open upward. As shown in Figs. 37(b) and 37(c), when the wearer W inhales from the nose, the inside of the breathing rectifier 108 becomes a negative pressure, so the lower intake valve 1082 opens and the upper exhaust valve 1083 closes, and fresh air below can be inhaled. When the wearer W exhales from the nose, the inside of the breathing rectifier 108 becomes a positive pressure, so the upper exhaust valve 1083 opens and the lower intake valve 1082 closes, and the air inside the breathing rectifier 108 can be discharged upward.
[0358] [b Fan] The fan used in this embodiment is a fan 4E with a built-in centrifugal fan, which is the same as in the sixth, seventh, and eighth embodiments. However, a fan with a blowing capacity of about 150 cc per second (9000 ml per minute) is used.
[0359] [c Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4E as in the second embodiment and the like. Instead, a power supply unit 5A that is separated from the fan 4E and connected to the fan 4E by a power cable 6 is used.
[0360] [d Power cable] The power cable 6 is a cable that connects the power supply unit 5A similar to that in the second embodiment and the like and the fan 4E.
[0361] [(2) Explanation of effects] Next, the effects of the protective clothing 100J according to this embodiment will be described.
[0362] Assuming that an adult inhales about 500 ml of air per breath and breathes about 15 times per minute, the minute ventilation volume is around 7500 ml (125 cc per second). Therefore, if the air supply capacity of the fan 4E is about 150 cc per second, since the air supply volume of the fan 4E is more than the inhalation volume per minute of the wearer W, the above-mentioned level is sufficient as the average air supply volume. However, looking at the inhalation of the wearer W over about 2 seconds, during this time the wearer W inhales 500 ml, so the inhalation volume of the wearer W is 200 ml more than the air supply volume of the fan 4E of 300 ml during this time.
[0363] In this regard, according to this embodiment, the buffer portion 107 of the protective clothing main body 1J can solve this problem. That is, the buffer portion 107 has a capacity of about 300 ml, and just before the inhalation of the wearer W, about 300 ml of fresh air accumulates in the buffer portion 107. Therefore, when combined with the air supply volume by the fan 4E, 500 ml, which is the inhalation volume when the wearer inhales, is sufficiently ensured.
[0364] Note that, as the fan 4E, one having an ability of about 9000 ml of average air volume per minute is used. However, when the buffer part 107 is full, the pressure inside the protective clothing body 1J rises and air cannot be blown. Finally, the air volume blown by the fan 4E will match the breathing volume of the wearer W.
[0365] [(3) Modified Example] As in the protective clothing 100K shown in FIG. 38, the non-deformable part M may be provided only in the part of the protective clothing body 1K located below the mouth of the wearer, and the entire upper part thereof may be formed of a flexible film that deforms under a small pressure, and may be formed by a bag-shaped body B that is detachable from the non-deformable part M. Also, the breathing rectifier 108 is not provided.
[0366] Since it is formed in this way, if the air volume blown by the fan 4E is sufficient, the bag-shaped body B itself that constitutes the entire part other than the non-deformable part M of the protective clothing body 1K made of a flexible film will serve as a buffer part. Therefore, it is possible to absorb the increase and decrease of the air inside the protective clothing body 1K due to the breathing of the wearer W in the same manner as the protective clothing 100J according to the eighth embodiment.
[0367] Also, in the protective clothing body 1K, the bag-shaped body B is simply a bag made of a film with the air discharge hole 12 opened, so it can be provided at low cost. In the case of taking a meal, etc., the bag-shaped body B can be removed and discarded, and then a new bag-shaped body B can be attached. Note that when the non-deformable part M is attached to the neck, the non-deformable part M may be divided into two and attached so as to sandwich the neck.
[0368] [10 Tenth Embodiment] The protective clothing 100M according to the tenth embodiment will be described with reference to FIGS. 39 to 46. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0369] [(1) Description of Configuration] The protective clothing 100M according to this embodiment differs from the protective clothing 100 according to the first embodiment in the following points.
[0370] [a protective clothing body] As shown in FIG. 39, the protective clothing body 1M is formed to cover only the head above the neck of the wearer W. Further, the protective clothing body 1M is formed by using a dipping method (immersion method) with a polyvinyl chloride film V or the like to have a highly transparent and seamless appearance with a neat shape.
[0371] Since the protective clothing is used outdoors or inside indoor facilities with a large number of people, the appearance is also important. In the dipping method, since a film such as polyvinyl chloride is generated in a mold, a protective clothing body with an arbitrary shape with a neat appearance can be manufactured. By forming the protective clothing body 1M according to this embodiment by such a dipping method, the appearance of the protective clothing can be improved. Also, depending on the usage method, the protective clothing body 1M can be used repeatedly.
[0372] Note that, not limited to the case of forming by the dipping method, in order for a person with long hair to use the protective clothing 100M, it is preferable that the protective clothing body 1M has a shape provided with a space for accommodating hair at the rear part. Also, when the protective clothing 100M is used, for example, as a measure against PM2.5 or pollen, since it does not pose a major problem even if a small amount of outside air enters through the air discharge holes 12, it is not necessary to make the space inside the protective clothing body 1M (the space excluding the body of the wearer W) too large, but at least 0.5L is still required. If it is less than this, when the protective clothing body 1M is deformed by the external wind pressure or when the volume of the protective clothing body 1M is reduced due to the wearer W taking a deep breath, the film forming the protective clothing body 1M may stick to the face of the wearer W, causing discomfort. Also, originally, even when the outside is windless or when the wearer W stops breathing, in order to prevent the film from sticking to any part of the wearer W's face, the capacity of the space inside the protective clothing body 1M must be at least 1L, and considering the differences in the shapes of the faces of individual users, it is desirable to be about 4L. Note that when the capacity of the space inside the protective clothing body 1M exceeds 10L, the protective clothing body 1M becomes too large and often gets in the way.
[0373] Also, the protective clothing body 1M is provided with neck air leakage prevention means 103M at the opening of the neck. The neck air leakage prevention means 103M is formed by forming a portion corresponding to the neck of the wearer W of the protective clothing body 1M longer downward, and then, on the outer surface side of the portion located around the neck of the wearer W, a plurality of loops 1031, that is, a ring-shaped portion having an opening through which a string can be inserted is formed by fixing a sheet that is long in the vertical direction at two positions in the vertical direction like a general belt loop. After passing a string-like member 1032 such as a rubber string through here, by providing a cord stopper 1033 so as to pass through both ends of the string-like member, the opening area of the opening of the neck of the protective clothing body 1M can be adjusted. Here, the string-like member is also widely defined as an elongated member that can pass through the loop 1031, such as one having a belt-shaped cross section. Also, instead of the loop 1031, for example, the lower part of the protective clothing body 1M may be folded upward to form a cylindrical space, and the string-like member 1032 may be passed through the space.
[0374] Further, the protective clothing body 1M is provided with a plurality of convex portions that protrude inward on the portion that contacts the wearer's neck of a film such as polyvinyl chloride formed by the dipping method (the portion provided with the neck air leakage prevention means 103M). The convex portions are formed, for example, by embossing to form a large number of high convex portions like the convex portion 109 shown in FIG. 40. Also, they may be formed in a plurality of linear shapes like the convex portion 109A shown in FIG. 41. In any case, when the protective clothing body 1M is formed by the dipping method, such convex portions can be easily formed by previously forming indentations in the mold.
[0375] When the polyvinyl chloride film V forming the protective clothing body 1M adheres closely to the wearer W's neck, it causes discomfort such as stickiness and stuffiness to the wearer W. On the other hand, according to the present embodiment, due to the convex portions provided on the portion that contacts the wearer's neck, as shown in FIGS. 40(b) and 41(b), a gap is created between the polyvinyl chloride film V and the wearer W's neck, reducing the contact area with the wearer W's neck and allowing an appropriate amount of air to leak, thereby reducing such discomfort. That is, at the neck of the protective clothing body 1M, while preventing excessive air leakage by the neck air leakage prevention means 103M, at the same time, a gap is formed as an air discharge means for slightly discharging air to reduce the discomfort of the wearer's neck by the convex portions as described above. In addition, if the inside of the protective clothing body 1M becomes a positive pressure, there is no risk of contaminated outside air flowing in from such a gap as the air discharge means.
[0376] [b Fan] The fan used in the present embodiment is the same fan 4E with a built-in centrifugal fan as in the sixth, seventh, eighth, and ninth embodiments.
[0377] [c Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4E as in the second embodiment and the like. Instead, a power supply unit 5A that is separated from the fan 4E and connected to the fan 4E by a power cable 6 is used.
[0378] [d Power cable] The power cable 6 is a cable that connects the power supply unit 5A similar to that in the second embodiment and the like and the fan 4E.
[0379] [(2) Considerations on indoor and outdoor use] Regarding the indoor and outdoor use of the protective clothing 100M according to this embodiment, the case of using it for the purpose of protecting against viruses will be described as an example.
[0380] There is no problem when using it indoors without wind. However, when using it outdoors and the wind is strong, the protective clothing body 1M may be deformed by the wind pressure, and a part of the protective clothing body 1M may come into contact with the head of the wearer W, or the inside of the protective clothing body 1M may temporarily have a large negative pressure, causing outside air to flow in from the air discharge holes 12. The pressure received by the protective clothing body 1M due to the wind increases with the square of the wind speed and is approximately the following value. Wind speed 1m / S: 0.6Pa Wind speed 2m / S: 2.5Pa Wind speed 3m / S: 5.5Pa Wind speed 4m / S: 9.8Pa Wind speed 5m / S: 15.3Pa Wind speed 6m / S: 22.1Pa Wind speed 8m / S: 39.2Pa Wind speed 10m / S: 61.3Pa Wind speed 12m / S: 88.2Pa
[0381] On the other hand, outdoors, the density of the scattered virus is low, and the stronger the wind, the lower the density of the virus. The protective clothing 100M according to this embodiment can be used outdoors up to a wind speed of about 8m / S. In contrast, indoors, usually there is almost no wind, but the concentration of the virus is higher compared to outdoors.
[0382] On the premise of the above, the differences in the usage methods indoors and outdoors will be described. The minimum air volume introduced into the protective clothing body 1M by the fan 4E is set to 30 L / min, which is more than three times the breathing volume of the wearer W, and the size of the air discharge hole 12 is set so that the pressure inside the protective clothing body 1M at this time is 5 Pa. Note that the minimum air volume can be improved by the design of the air passage inside the protective clothing body 1M and the like.
[0383] When used indoors, since the virus density may be high, as the filter 432E provided in the filter part 43E of the fan 4E, a filter with high collection ability is used to reduce the wind speed passing through the filter and further increase the collection ability, and the air volume introduced into the protective clothing body 1M by the fan 4E is set to 30 L / min.
[0384] When used outdoors, since the virus density is low, as the filter 432E provided in the filter part 43E of the fan 4E, a filter with not very high collection ability is used, and the air volume introduced into the protective clothing body 1M by the fan 4E is set to 50 L / min. In this case, since the speed of the air passing through the air discharge hole 12 is about 1.67 times that during indoor use, the pressure inside the protective clothing body 1M becomes 13.9 Pa, which is 2.78 times that during indoor use. Furthermore, when the wind becomes stronger, if the voltage applied to the fan 4E is increased and the air volume introduced into the protective clothing body 1M by the fan 4E is made 70 L / min, the pressure inside the protective clothing body 1M becomes 27.2 Pa. In this case, even when receiving a wind with a wind speed of 6 m / S, the protective clothing body 1M hardly deforms.
[0385] Note that the fact that the protective clothing body 1M does not deform means that when the instantaneous exhalation volume of the wearer W suddenly becomes larger than the air volume introduced into the protective clothing body 1M by the fan 4E, it is inevitable that the inside of the protective clothing body 1M will become negative pressure due to the deformation of the protective clothing body 1M. However, if the air volume introduced into the protective clothing body 1M by the fan 4E is set to 50 L / min or more, it is unlikely that the instantaneous exhalation volume of the wearer W will become larger than the air volume introduced into the protective clothing body 1M by the fan 4E, and the problem of the inside of the protective clothing body 1M becoming negative pressure will not occur.
[0386] As described above, when the protective clothing 100M is used indoors where the virus density may be high, the collection ability of the filter 432E provided in the filter section 43 of the fan 4E is increased. When used outdoors where the virus density is low, the collection ability of the filter 432E provided in the filter section 43 is decreased, and the air volume introduced into the protective clothing body 1M by the fan 4E is increased to prevent the protective clothing body 1M from deforming due to the wind.
[0387] Also, when the wind becomes strong, the air volume is increased according to the strength of the wind, and the pressure inside the protective clothing body 1M is increased to prevent deformation. If the air volume introduced into the protective clothing body 1M by the fan 4E is increased to increase the pressure inside the protective clothing body 1M according to the strength of the wind, the speed at which the outside air passes through the filter 432E increases, and the collection ability decreases. However, since the virus density decreases as the wind becomes stronger, this is not a problem. Note that in order to achieve both resistance to external wind outdoors and sufficient collection ability of the filter indoors, it is desirable to be able to change the pressure inside the protective clothing body 1M in the range of 5 Pa to 80 Pa by adjusting the voltage applied to the fan 4E.
[0388] [(3) Modification example] Subsequently, a modification example of this embodiment will be described.
[0389] [a First modification example] As with the protective clothing 100N shown in Fig. 42, a windproof hood 10 for preventing deformation of the protective clothing body 1M may be provided. The windproof hood 10 is formed of a hard material with little deformation due to wind pressure so as to cover the entire protective clothing body 1M as shown in Fig. 42. In the above embodiment, in order to resist wind during outdoor use, the case of increasing the pressure inside the protective clothing body 1M to prevent deformation has been described. However, in order to increase the pressure, it is necessary to increase the amount of air introduced into the protective clothing body 1M by the fan 4E, which will be accompanied by an increase in the burden on the fan 4E and an increase in power consumption. Also, as described above, although there will be no problem if the amount of air introduced into the protective clothing body 1M by the fan 4E is 50 L / min or more, preventing deformation of the protective clothing body 1M means that it is impossible to avoid the negative pressure inside the protective clothing body 1M due to deformation of the protective clothing body 1M.
[0390] According to this modification, since the protective clothing 100N is provided with the windproof hood 10, it is possible to prevent the protective clothing body 1M from deforming due to the influence of wind without increasing the pressure inside the protective clothing body 1M. Therefore, there is no increase in the burden on the fan 4E or increase in power consumption. Also, when the inside of the protective clothing body 1M becomes negative pressure, it can be eliminated by the deformation of the protective clothing body 1M, so that the occurrence of the above-mentioned adverse effects can be avoided.
[0391] Note that the windproof hood 10 needs to be formed of a transparent material at least in the part corresponding to the wearer's eyes. However, it may be entirely transparent or only the part corresponding to the eyes may be transparent. Also, although not shown, it is desirable to make the parts corresponding to the ears and mouth have a specification that makes it easy to talk, such as making holes and covering them with a film to facilitate sound passage.
[0392] [b Second Modification Example] The second modification example, like the first modification example, is provided with a windproof hood for preventing deformation of the protective clothing body 1M. However, instead of forming the windproof hood with a rigid material as in the first modification example, a flexible sheet-like material is used to form a shape similar to the windproof hood 10 according to the first modification example. Then, a large number of rigid ring-shaped structures such as metal and resin are provided so as to be arranged in the vertical direction, thereby forming a structure like a lantern to prevent the deformation of the windproof hood by the wind. With such a structure, when carrying the windproof hood when not in use, it can be folded in the vertical direction. When using the windproof hood, it can be spread and covered from above the head to form a hood.
[0393] [c Third Modification Example] The third modification example is also similar to the second modification example. After forming a shape similar to the windproof hood 10 according to the first modification example using a flexible sheet-like material, a structure as a reinforcing member is provided to prevent the deformation of the windproof hood by the wind. However, in this modification example, as the structure, a structure 1010 like the ribs of a folding umbrella as shown in Fig. 43 is used. The structure 1010 is configured to be switchable between the folded state shown in Fig. 43(a) and the expanded state shown in Fig. 43(b). A plurality of them are combined so as to intersect at the apex 1010a like a folding umbrella, and a flexible sheet-like material is stretched there to form a windproof hood, so that the windproof hood can be folded like a folding umbrella.
[0394] [d Fourth Modification Example] The fourth modification example, similar to the first modification example, is provided with a windproof hood for preventing deformation of the protective clothing body 1M. However, instead of manufacturing the windproof hood continuously with a rigid material as in the first modification example, as shown in Fig. 44(a), the windproof hood 10 in the first modification example is finely cut and divided to form a number of rectangular plate-like members 1020. After making through-holes in two directions so as to connect the central portions of two opposite sides in a plan view, as shown in Fig. 44(a), the windproof hood is formed by passing strings 1030 through such through-holes in two directions and connecting them. The plate-like member 1020 needs to have a thickness sufficient to allow a hole for passing the string.
[0395] By this, a windproof hood can be formed by pulling the string 1030, and it can be folded in two directions when carried. In addition, as in the plate-like member 1020A shown in (b), ears 1020a, which are protruding portions with hole portions for passing the string 1030 formed near the central portions of each side, may be provided without providing through-holes, thereby enabling the string 1030 to pass through. In this case, since the plate-like member 1020A can be made thinner, weight reduction can be achieved.
[0396] [e Fifth Modification Example] As shown in Fig. 45, the protective clothing 100P according to the fifth modification example is provided with a cut in a portion of the protective clothing body 1P located in front of the wearer's neck, and a wire fastener 110 extending in the vertical direction is provided at the cut to enable opening and closing. This makes it easy to put on and take off the protective clothing body 1P. Also, when putting on and taking off, since the wire fastener 110 can be opened, if the film forming the protective clothing body 1P has a certain degree of elasticity, the portion of the film corresponding to the wearer's neck can be tightly formed and brought into close contact with the wearer W's neck, so that it can be used as a means for preventing air leakage at the neck. Therefore, it is not necessary to provide a neck air leakage prevention means 103M composed of a loop 1031, a string-like member 1032, and a cord stopper 1033 as in the protective clothing 100M.
[0397] In addition, in the portion of the film constituting the protective clothing body 1P where the wire fastener 110 is provided, an extension portion 120 is provided which is formed to extend downward so as to facilitate the operation of opening the wire fastener 110.
[0398] [f Sixth Modification Example] As shown in FIG. 46, the protective clothing 100Q according to the sixth modification example is configured by a thick film portion 1a, a thin film portion 1b, and an ultra-thin film portion 1c, assuming that the protective clothing body 1Q is used outdoors and suppressing deformation due to wind.
[0399] Among these, the thick film portion 1a is a portion thickly formed of a hard material so as not to deform due to the pressure of the wind or, if it deforms, to remain deformed only slightly. As shown in FIG. 46, it is formed in a portion corresponding to the face of the wearer W and a portion corresponding to the back of the head of the wearer W. This can suppress the influence of the wind on the protective clothing body 1Q. In addition, an air discharge hole 12Q is formed in the portion corresponding to the back of the head of the wearer, and the upper and rear sides of the air discharge hole 12Q are covered by a wind shield 121 thickly formed of a hard material like the thick film portion 1a.
[0400] The thin film portion 1b is a portion formed of a thin, flexible and comfortable-to-touch sheet so as to have flexibility along the body of the wearer W, and is formed in a portion corresponding to the head of the wearer W and a portion corresponding to the neck of the wearer W. As a result, the wearer W can put on the hat H on the protective clothing body 1Q, and, as in the above-described embodiment, the neck air leakage prevention means 103M can prevent excessive air leakage from the neck and can also slightly leak air from the gap formed by the convex portion 109 or 109A to prevent sweating of the wearer W's neck.
[0401] Further, the ultra-thin film portion 1c is a portion formed of a flexible film with a thickness of several micrometers so as to be easily deformed by the pressure inside the protective clothing body 1Q, similar to the buffer portion 107 of the protective clothing 100J according to the ninth embodiment, and is formed in the portion below the wearer's chin. As a result, the volume of this portion changes with the breathing of the wearer W, and a buffer portion 107Q having a similar effect to the buffer portion 107 of the protective clothing 100J according to the ninth embodiment is formed, and even if the air volume blown by the fan 4E is not too large, the change in the air volume inside the protective clothing body 1Q due to the breathing of the wearer W can be absorbed by the change in the volume of the buffer portion 107Q.
[0402] Further, the ultra-thin film portion 1c (buffer portion 107Q) is at least covered in the front and below as shown in FIG. 46 by a buffer portion cover 1071 thickly formed of a hard material similar to the thick film portion 1a. As a result, the buffer portion 107Q is less likely to be affected by the wind.
[0403] Here, the relationship between the breathing (exhalation and inhalation) of the wearer W and the change in the volume of the buffer portion 107Q will be described. 1. During exhalation: It expands due to the air blown by the fan 4E and the exhalation of the wearer W. 2. During the stop between exhalation and inhalation: It expands due to the air blown by the fan 4E. 3. During normal inhalation: It contracts due to the inhalation of the wearer W. 4. During a large inhalation: It caves inward due to the inhalation of the wearer W.
[0404] In this way, when the wearer W inhales largely, the buffer portion 107Q contracts and caves further inward, thereby preventing the pressure inside the protective clothing body 1Q from becoming a large negative pressure, keeping the inflow amount of outside air from the air discharge hole 12Q to a small amount, and since there is a large space between the air discharge hole 12Q and the nostrils of the wearer W, the outside air flowing in from the air discharge hole 12Q does not reach the nostrils of the wearer W. In addition, by providing the buffer section 107Q, the risk of air inflow from the air discharge hole 12Q can be reduced, so that the amount of air blown by the fan 4E can be kept small, and by suppressing the amount of air blown, it becomes possible to improve the capture rate of the filter.
[0405] [11 11th Embodiment] The protective clothing 100R according to the 11th embodiment will be described with reference to FIGS. 47 to 56. Note that the same parts as those in the 1st embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the 1st embodiment will be described.
[0406] [(1) Description of Configuration] The protective clothing 100R according to the present embodiment is different from the protective clothing 100 according to the 1st embodiment in the following points.
[0407] [a Protective Clothing Body] The protective clothing body 1R is assumed to be used particularly in a medical field, and focuses on improving the capture rate of viruses and the like by the filter, avoiding the problem of backflow of outside air from the air discharge hole, and avoiding contamination during undressing. As shown in FIG. 47, the protective clothing body 1R is formed by the polyethylene film P so as to cover only the head above the wearer W's neck, and the upper part above the wearer W's head is formed in a double structure including an exhaust chamber 130, and the air discharge hole 12R is formed in the rear part of the protective clothing body 1R located at the back of the exhaust chamber 130.
[0408] As shown in FIG. 47, the exhaust chamber 130 is formed by making the upper part of the protective clothing body 1R into a double structure by the partition film 1301, and is connected to the other parts of the internal space of the protective clothing body 1R only at the air intake part 1302 which is an opening formed in the front, and the air introduced into the exhaust chamber 130 from the air intake part 1302 is configured to be discharged to the outside from the air discharge hole 12R formed at the back of the exhaust chamber 130.
[0409] Further, similar to the tenth embodiment, the protective clothing body 1R is provided with a neck air leakage prevention means 103M having a loop 1031, a string-like member 1032, and a cord stopper 1033 at a position corresponding to the neck of the wearer. Also in this case, instead of the loop 1031, for example, a tubular space may be formed by folding the lower part of the protective clothing body 1R upward, and the string-like member 1032 may be passed through the space.
[0410] Further, below the neck air leakage prevention means 103M, a positioning mark 140, which is a belt-like mark used for positioning the neck air leakage prevention means 103M as described later, is formed on the film forming the protective clothing body 1R by printing with a conspicuous color such as red so as to go around the neck of the wearer W.
[0411] Also, as shown in FIG. 47, at two positions on the left and right in front of the vicinity of the lower end of the protective clothing body 1R, a stripping belt 150, which is a belt-like member used when taking off the protective clothing body 1R as described later, is provided. As shown in FIG. 47, one end of the stripping belt 150 is connected to a position above the neck air leakage prevention means 103M on the inner surface side of the film constituting the protective clothing body 1R, and the other end is provided so as to protrude downward from the lower end of the film forming the protective clothing body 1R.
[0412] Also, as shown in FIG. 47, above the neck air leakage prevention means 103M in front of the protective clothing body 1R, a fan mounting hole 11R, which is a rectangular hole formed so that a fan 4R described later can be mounted, is formed, and the periphery thereof is reinforced by a reinforcing sheet 111R.
[0413] [b Fan] As shown in Fig. 48, the fan 4R, similar to the fan 4E according to the sixth embodiment etc., uses a centrifugal fan with a small turbo blade about 4 cm in diameter as the fan body 4111E housed in the fan body housing part 411E of the main body part 41R, and is configured to discharge the air taken in from the front from the air delivery part 4112E on the side surface, and is used by being attached to the fan mounting hole 11R of the protective clothing body 1R as shown in Fig. 47. Also, the pusher 42R, similar to the fan 4E etc. according to the sixth embodiment etc., includes a cover part 424R formed so as to cover the portion located on the outer surface side of the protective clothing body 1R from the front in a state where the fan 4R is attached to the protective clothing body 1R, and includes protruding parts 428 protruding to the outer surface side at opposite positions on the left and right of the outer wall 422.
[0414] [c Band-shaped member] As shown in Fig. 47, the band-shaped member 20 is a member for winding around the wearer's neck so as to be located inside the protective clothing body 1R. The wearer W puts on the protective clothing body 1R after previously winding the band-shaped member 20 so that the neck air leakage prevention means 103M is located on the band-shaped member 20.
[0415] As shown in Fig. 49, the band-shaped member 20 includes a main body part 201 formed of a material such as double raschel fabric, which is excellent in air permeability and allows air to pass through in the vertical direction when the wearer W is wearing it, a first extension part 202 formed of a general fabric with a good touch connected to one end of the main body part 201, a second extension part 203 formed of a general fabric with a good touch connected to the other end of the main body part 201, a first surface fastener 204 provided on one surface of the first extension part 202, and a second surface fastener 205 provided on the surface of the second extension part 203 located on the side opposite to the surface where the first surface fastener 204 is provided. Thus, the band-shaped member 20 can be wound around the wearer W's neck and fixed, and the length of the band-shaped member 20 can be adjusted according to the thickness of the wearer W's neck by adjusting the attachment positions of the first surface fastener 204 and the second surface fastener 205. Further, as shown in FIG. 49, the first extension portion 202 is formed to be longer than the second extension portion 203, and the first surface fastener 204 is formed to be longer than the second surface fastener 205.
[0416] Note that the material of the main body portion 201 is not limited to double raschel fabric, and any material can be used as long as it has high air permeability, such as a highly elastic spacer designed specifically, and can allow air to pass through in the vertical direction when the wearer W is wearing it.
[0417] [d Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4R, but is separated from the fan 4R, and a power supply unit 5A connected to the fan 4R by a power cable 6 is used, similar to the second embodiment and the like.
[0418] [e Power cable] The power cable 6 is a cable that connects the power supply unit 5A similar to that in the second embodiment and the like and the fan 4R.
[0419] [(2) Explanation of usage method] Next, the procedures for putting on and taking off the protective clothing 100R according to this embodiment before and after use will be described. Note that the procedures similar to those in other embodiments, such as the attachment of the power supply unit 5A and the power cable 6, will be omitted from the description.
[0420] [a When putting on] First, the procedure for wearing the protective clothing 100R and starting use will be described. 1 Wrap the belt-like member 20 around the neck of the wearer W. 2 Put on the protective clothing main body 1R. 3 After positioning the string-like member 1032 of the neck air leakage prevention means 103M on the belt-like member 20 wrapped around the neck, tighten the string-like member 1032 and fix it with the cord stopper 1033. At this time, the wearer W can easily confirm that the positional relationship between the string-like member 1032 of the neck air leakage prevention means 103M and the belt-like member 20 wound around the neck of the wearer W is appropriate by visually checking that the positioning mark 140 printed in a belt shape is at an appropriate position below the neck air leakage prevention means 103M of the protective clothing body 1R.
[0421] By wearing the protective clothing 100R in this way, since the string-like member 1032 of the neck air leakage prevention means 103M is positioned on the belt-like member 20, even if the neck air leakage prevention means 103M is tightened, the film forming the protective clothing body 1R will not directly adhere to the neck of the wearer W. Also, the inner surface side of the portion of the film forming the protective clothing body 1R where the string-like member 1032 is arranged will be in close contact with the surface of the belt-like member 20. However, as described above, the main body portion 201 of the belt-like member 20 is made of a material such as double raschel fabric that has excellent breathability and can pass air in the vertical direction. Therefore, while preventing excessive air leakage by the neck air leakage prevention means 103M, such a belt-like member 20 can also function as an air discharge portion of the neck that discharges an appropriate amount of air, and can prevent the neck of the wearer W from getting stuffy. In addition, by using a fabric such as double raschel fabric with high cushioning properties, problems such as a sense of compression and touch caused by over-tightening can be avoided.
[0422] [When undressing] Next, the procedure for undressing the protective clothing 100R after use will be described. 1 Loosen the string-like member 1032 of the neck air leakage prevention means 103M. 2 Grasp and pull up the tips of the two undressing straps 150 exposed at the lower left and right front ends of the protective clothing body 1R. As a result, the protective clothing body 1R is turned inside out, and the uncontaminated inner surface side becomes the outer surface side. By using the undressing straps 150, this operation can be easily performed and usually takes no more than 5 seconds. Remove the three fans 4R. At this time, on the inner surface side of the protective clothing body 1R on the front side, there is the main body 41R of the fan 4R that is not contaminated, and on the outer surface side of the protective clothing body 1R on the back side of the film, there is the pusher 42R that is highly likely to be contaminated. Therefore, the wearer W grasps the protruding portions 428 protruding to the left and right of the pusher 42R through the transparent polyethylene film P that constitutes the protective clothing body 1R with one hand, and grasps and pulls the side wall of the main body 41R with the other hand, so that the connection between the main body 41R and the pusher 42R can be easily released. As a result, the uncontaminated main body 41R can be taken out on the front side (inner surface side) of the film, and the pusher 42R and the filter portion 43 that may be contaminated will fall on the back side (outer surface side) of the film that may be contaminated and has been turned over.
[0423] Note that the protective clothing body 1R usually weighs less than 50 grams even including the rubber string or the like of the neck air leakage prevention means 103M, and the fan 4R also usually weighs less than 50 grams even when the main body 41R, the pusher 42R, and the filter portion 43 are combined. Therefore, even when added together, it weighs less than 100 grams, so even if the wearer W wears the protective clothing 100R all day long, it will not cause a large burden, and undressing as described above can be easily performed.
[0424] Even if a specification change involving weight increase is made, such as strengthening the filter to increase the capture rate of the object to be protected such as a virus, it is unlikely that the total weight of the protective clothing body 1R and the fan 4R will reach 200 grams. In this case, undressing can also be easily performed. Therefore, by undressing as described above, the risk of contaminating the face of the wearer W during undressing is almost non-existent.
[0425] [(3) Explanation of the manufacturing method] Next, the procedure for manufacturing the protective clothing body 1R of the protective clothing 100R according to the present embodiment will be described with reference to FIG. 50.
[0426] [a Step 1] As shown in FIG. 50(a), prepare a rectangular bag-like body similar to a general transparent garbage bag with a width of 38 cm and a length of about 53 cm formed of a polyethylene film P. In FIG. 50(a), the opening is located downward.
[0427] [b Step 2] As shown in FIG. 50(b), at the arcuate third joining line J3 that bulges upward corresponding to the shape of the wearer W's head, weld the two polyethylene films P on both sides of the bag-like body. At this time, one end of the third joining line J3 reaches the end of the bag-like body.
[0428] [c Step 3] As shown in FIG. 50(c), at the arcuate fourth joining line J4 that bulges upward and is located above the third joining line J3, weld the two polyethylene films P on both sides of the bag-like body. At this time, both ends of the fourth joining line J4 reach the end of the bag-like body, and one end intersects the third joining line J3.
[0429] [d Step 4] As shown in FIG. 50(d), cut the upper part of the bag-like body along the fourth joining line J4. At this time, for example, by cutting slightly above the fourth joining line J4, holes are not formed in the joining at the fourth joining line J4.
[0430] [e Step 5] As shown in FIG. 50(e), after opening the fan mounting hole 11R and the air discharge hole 12R, fold back the vicinity of the lower end of the bag-like body upward, and then weld the upper end of the folded-back part in a circle. Further, form one or two holes in the folded-back part so that the string-like member 1032 can pass through. After passing the string-like member 1032 through this part, attach the cord stopper 1033.
[0431] By going through the above process, it is possible to easily manufacture a protective clothing body of a type provided with a string-through portion 1034 formed by folding back a film instead of the loop 1031 as a portion through which the string-shaped member 1032 passes. From step 1 to the opening of the fan mounting hole 11R and the air discharge hole 12R in step 5, since the work can be carried out without moving the bag-shaped body while maintaining the state shown in Fig. 50(a), the work can be carried out particularly efficiently.
[0432] Note that it is not essential to perform steps 2 to 4 as separate steps. For example, welding may be performed simultaneously at both the third joining line J3 and the fourth joining line J4, and then the bag-shaped body may be joined and cut simultaneously along the fourth joining line J4.
[0433] [(4) Explanation of effects] Next, the effects of the protective clothing 100R according to the present embodiment will be described.
[0434] The air purified by the filter taken into the protective clothing body 1R by the fan 4R is sent near the mouth of the wearer W. A part of the air sent by the fan 4R is inhaled by the wearer W, and the exhalation of the wearer W enters the exhaust chamber 130 from the air intake portion 1302 together with a part of the air sent by the fan 4R that has not been inhaled by the wearer W, and is discharged to the outside through the air discharge hole 12R. Here, the smaller the ratio of the air sent near the mouth of the wearer W by the fan 4R that is directly discharged without being inhaled by the wearer W, that is, the smaller the air supply volume by the fan 4R, the lower the speed of the air passing through the filter 432 of the filter unit 43, and the higher the capture rate for the objects to be protected such as viruses.
[0435] When the wearer W takes a large inhalation due to deep breathing or the like, the inside of the protective clothing body 1R may become negative pressure. At this time, since the polyethylene film P used for the protective clothing body 1R is flexible and easily deformed, it is possible to avoid the inside becoming a large negative pressure due to the deformation. However, even if it becomes slightly negative pressure by chance and outside air flows backward into the protective clothing body 1R from the air discharge hole 12R, the outside air that has entered the protective clothing body 1R from the air discharge hole 12R will enter the exhaust chamber 130, and unless it reaches the opening as the air intake portion 1302, it will not spread to the region outside the exhaust chamber 130 in the protective clothing body 1R. Therefore, according to the present embodiment, it is possible to further reduce the risk that the outside air that has entered the protective clothing body 1R from the air discharge hole 12R reaches the nostrils of the wearer W and the wearer W inhales this. Note that such an effect can be enhanced by reducing the possibility that the backward-flowing outside air reaches the nostrils of the wearer W as the volume of the exhaust chamber 130 is larger.
[0436] [(5) Modified example] Subsequently, a modified example of the present embodiment will be described.
[0437] [a First modified example] In the exhaust chamber 130, space securing means for preventing the exhaust chamber 130 from collapsing and securing a space may be provided. For example, when the wearer W takes a large deep breath or the like, it is conceivable that the exhaust chamber 130 collapses and its volume becomes smaller. This modified example aims to prevent a decrease in the volume of the exhaust chamber 130 and control the air flow.
[0438] The space securing means may be any means that can secure a flow path from the opening as the air intake portion 1302 to the air discharge hole 12R while preventing the inside of the exhaust chamber 130 from collapsing. For example, it may be formed in a cylindrical shape with both ends open using a material such as cardboard, like the space securing means 30 shown in FIG. 51. By providing a space securing means 30 in the exhaust chamber 130 such that the first opening 301 formed at one end faces the air intake portion 1302 of the exhaust chamber 130 and the second opening 302 formed at the other end faces the air discharge hole 12R, it is possible to prevent a decrease in the volume of the exhaust chamber 130 while securing a flow path from the air intake portion 1302 to the air discharge hole 12R.
[0439] Further, as the space securing means, it may be formed in a rectangular tube shape with both ends open using a material such as cardboard, like the space securing means 30A shown in Fig. 52. Also in this case, by providing a space securing means 30A in the exhaust chamber 130 such that the first opening 301A formed at one end faces the air intake portion 1302 of the exhaust chamber 130 and the second opening 302A formed at the other end faces the air discharge hole 12R, it is possible to prevent a decrease in the volume of the exhaust chamber 130 while securing a flow path from the air intake portion 1302 to the air discharge hole 12R.
[0440] Further, as the space securing means, it may be formed in a rectangular tube shape with both ends open and the width in the left - right direction narrowing rearward in a state where it is disposed in the exhaust chamber 130, like the space securing means 30B shown in Fig. 53.
[0441] As shown in Fig. 53, in the space securing means 30B, a first opening 301B is formed at the center of one end portion where the width in the left - right direction is wide in a state of being disposed in the exhaust chamber 130, and the portion other than the first opening 301B of the same end portion is blocked. Also, a second opening 302B is formed over substantially the entire other end portion where the width in the left - right direction is narrow.
[0442] Further, four partition plates 303 are provided inside the space securing means 30B. As shown in Fig. 53(a), the partition plates 303 are formed from a position at a predetermined interval from one end portion where the first opening 301B is formed to the other end portion where the second opening 302B is formed. Also, in the vicinity of the second opening 302B, the partition plates 303 are arranged such that the interval between the partition plates 303 is narrower near the central portion of the space securing means 30B and wider toward the end portions.
[0443] Also in this case, by providing the space securing means 30B in the exhaust chamber 130 such that the first opening 301B formed at one end portion faces the air intake portion 1302 of the exhaust chamber 130 and the second opening 302B formed at the other end portion faces the air discharge hole 12R, it is possible to secure a flow path from the air intake portion 1302 to the air discharge hole 12R while preventing a decrease in the volume of the exhaust chamber 130.
[0444] Further, since the first opening 301B is formed only in the central portion, the air blown by the fan 4R does not flow much near the left and right end portions inside the protective clothing body 1R, but passes through near the nostrils of the wearer W in the central portion in the left - right direction and flows upward. As a result, the air blown by the fan 4R can be efficiently used for the breathing of the wearer W.
[0445] Also, for example, when the inside of the protective clothing body 1R becomes negative pressure, such as when the wearer W takes a deep breath, the space securing means 30B is formed such that the interval between the partition plates 303 is narrower near the central portion in the vicinity of the second opening 302B disposed near the air discharge hole 12R. Thus, the air that has entered the exhaust chamber 130 from the air discharge hole 12R can be taken in almost evenly throughout the space securing means 30B, and it is possible to further reduce the possibility that the wearer W inhales contaminated air. That is, if the intervals between the partition plates 303 were uniform, the air that has entered the exhaust chamber 130 from the air discharge hole 12R would concentrate in the compartments near the central portion in the left - right direction, which are closer to the first opening 301B, among the compartments partitioned by the partition plates 303 in the space securing means 30B. However, by making the opening at the second opening 302B narrower in the compartments near the central portion, this can be prevented.
[0446] [b Second Modification Example] As with the protective clothing 100S shown in FIG. 54, after using the protective clothing main body 1S without the exhaust chamber 130, the wearer W may put on a hat 3S having an exhaust pipe 32 inside the protective clothing main body 1S.
[0447] As shown in FIG. 53, the exhaust pipe 32 is formed by being wound in a spiral shape on the hat 3S. One end with the first opening 321 is located in front of the forehead of the wearer inside the protective clothing main body 1S, and the other end with the second opening 322 penetrates through the hole 160 formed in the protective clothing main body 1S and protrudes outside. Thus, the air that enters the exhaust pipe 32 from the first opening 321 as the air intake part can be discharged outside the protective clothing main body 1S through the hole 160 formed in the protective clothing main body 1S from the second opening 322 as the air discharge part. Note that around the hole 160, a ring having elasticity formed of rubber or the like is provided. The periphery of the hole 160 is reinforced, and a gap with the exhaust pipe 32 is prevented from being formed.
[0448] Thus, the space inside the exhaust pipe 32 functions in the same manner as the exhaust chamber 130 in the above-described embodiment, and the inside of the protective clothing main body 1S becomes a negative pressure. Even when outside air intrudes from the second opening 322 as the air discharge part, the intruded outside air can be retained inside the exhaust pipe 32, and the possibility that the wearer inhales contaminated air that has not passed through the filter can be reduced. That is, in this modified example, as described above, the space inside the exhaust pipe 32 functions as the exhaust chamber 130 in the protective clothing 100R according to the above-described embodiment, the first opening 321 of the exhaust pipe 32 functions as the air intake part 1302 in the protective clothing 100R according to the above-described embodiment, and the hole 160 through which the exhaust pipe 32 formed in the protective clothing main body 1S is inserted functions as the air discharge hole 12R in the protective clothing 100R according to the above-described embodiment, whereby the same function as the above-described embodiment can be obtained.
[0449] Next, the procedures for the wearer W to put on and take off the protective clothing 100S according to this modified example will be described. Note that the description of procedures similar to those in the above embodiment, such as the determination of the position of the neck air leakage prevention means 103M, will be omitted.
[0450] First, the procedure for putting on is as follows. 1. Put on the hat 3S equipped with the exhaust pipe 32. At this time, the first opening 321 of the exhaust pipe 32 is positioned in front of the wearer W's forehead. 2. Put on the protective clothing body 1S. 3. Pass the end portion where the second opening 322 of the exhaust pipe 32 protruding forward is formed through the hole 160 of the protective clothing body 1S. At this time, since the exhaust pipe 32 is provided in front of the wearer W where the wearer W can easily see it, and an elastic ring is provided around the hole 160, the ring can be stretched to easily pass the exhaust pipe 32 through the hole 160. Also, since an elastic ring is provided around the hole 160, it is possible to prevent a gap from occurring between the hole 160 and the exhaust pipe 32 after passing the exhaust pipe 32.
[0451] Furthermore, it is more preferable that a stopper (not shown) for preventing the position passing through the hole 160 from shifting is formed, for example, by providing a protrusion around the end portion protruding from the hole 160 of the exhaust pipe.
[0452] As the procedure for taking off, loosen the cord stopper 1033 of the neck air leakage prevention means 103M and the string-like member 1032, and then simply pull up and remove the lower end portion of the protective clothing body 1S outward using the undressing belt 150. At this time, among the hat 3S, the part that may be contaminated by viruses or the like is only the vicinity of the end portion on the second opening 322 side protruding from the protective clothing body 1S of the exhaust pipe 32, so only this part needs to be disinfected.
[0453] [c Third Modified Example] In the third modification example, similar to the second modification example, a protective clothing body 1S without an exhaust chamber 130 is used, and the wearer W wears a hat equipped with an exhaust pipe inside the protective clothing body 1S. However, in this modification example, as shown in Fig. 55, the hat 3T is provided with a warning system for warning when an abnormality occurs in the air volume in addition to the exhaust pipe 32T.
[0454] The warning system is, for example, when the power supply from the power supply unit 5A to the fan 4R is interrupted, when an abnormality occurs in the fan 4R, when the protective clothing body 1S is torn, when an abnormality occurs in the neck air leakage prevention means 103M, etc., when the air volume blown into the protective clothing body 1S by the fan 4R is less than the air volume required to prevent the intrusion of contaminated outside air, that is, when the air volume flowing through the exhaust pipe 32T is less than the specified value, it warns the wearer W and people around with a loud sound or the like.
[0455] Specifically, the warning system includes an air volume detection unit 323 provided in the exhaust pipe 32T, a circuit unit 324 for calculating the air volume provided on the side surface of the hat 3T, with a warning buzzer 3241 and an LED light 3242 for operation confirmation arranged thereon, and a power supply unit 325 provided on the side surface of the hat 3T for supplying power to the air volume detection unit 323 and the circuit unit 324.
[0456] As shown in Fig. 56, the air volume detection unit 323 includes a mounting shaft 3231 arranged in the diameter direction of the exhaust pipe 32T at an arbitrary position inside the exhaust pipe 32T, a film shutter 3232 attached to the mounting shaft 3231 and fluttering according to the air flow volume inside the exhaust pipe 32T by, for example, a black ultra-thin film, and an emitting element 3233 and a light receiving element 3234 provided at positions facing each other across the film shutter 3232 in a direction shifted by 90 degrees from the direction in which the mounting shaft 3231 extends.
[0457] The amount of air flowing through the exhaust pipe 32T is not constant and changes according to the breathing of the wearer W. However, if the average air volume over a predetermined time is calculated, it will be approximately the same as the air volume blown by the fan 4R if no abnormality has occurred.
[0458] According to the air volume detection unit 323 as described above, the amount of light received by the light receiving element 3234 from the emitting element 3233 changes according to the opening degree of the film shutter 3232, that is, the air flow rate inside the exhaust pipe 32T. Therefore, the light receiving element 3234 sends data on the amount of received light to the circuit unit 324 in real time. In the circuit unit 324, the average air volume for a predetermined time of several seconds at the light receiving element 3234 is calculated. When the calculated average air volume falls below a preset minimum air volume, the buzzer 3241 emits a loud sound to warn the wearer W and people around.
[0459] In addition, the LED light 3242 for operation confirmation lights up, for example, when the warning system having the above configuration is operating normally, and goes out when it is not operating normally. This enables the wearer W and people around to confirm whether the warning system is operating normally.
[0460] Also, since the power supply unit 325 is provided independently of the power supply unit 5A for the fan 4R, it is possible to prevent the above detection system from malfunctioning simultaneously when an abnormality occurs in the power supply unit 5A for the fan 4R and the fan 4R does not function properly.
[0461] Note that the configuration of the air volume detection unit may be any as long as it can detect the air volume in the exhaust pipe 32T, and is not limited to the above air volume detection unit 323. For example, in the above, a method using an emitting element and a light receiving element and using light was described. Instead of this, for example, a method using a hot wire may be used. Of course, the air volume detection unit is not limited to measuring the air volume itself, and may measure a predetermined value (quantity) that changes corresponding to the air volume and can detect the change in the air volume.
[0462] [d Fourth Modification Example] The fourth modification example, similar to the third modification example, uses a protective clothing body without an exhaust chamber 130. After the wearer puts on a hat equipped with an exhaust pipe inside the protective clothing body, it is equipped with a warning system that warns of abnormal air volume. However, the warning system according to the third modification example measures the air volume in the exhaust pipe to give a warning, whereas the warning system according to this modification example is different in that it measures the pressure inside the protective clothing body to give a warning.
[0463] That is, as described in the third modification example, for example, when the power supply from the power supply unit 5A to the fan 4R is interrupted, when an abnormality occurs in the fan 4R, when the protective clothing body 1S is torn, when an abnormality occurs in the neck air leakage prevention means 103M, etc., the air volume blown into the protective clothing body 1S by the fan 4R is lower than the air volume required to prevent the intrusion of contaminated outside air, an abnormality occurs in the air volume in the exhaust pipe, and at the same time, an abnormality (pressure drop) also occurs in the pressure inside the protective clothing body. Therefore, this modification example detects such a pressure abnormality and, for example, when the pressure inside the protective clothing body falls below a preset minimum pressure, issues a warning to the wearer W and people around by means of a loud buzzer or the like.
[0464] To measure the pressure inside the protective clothing body, the end of a thin measurement pipe must be extended outside the protective clothing body. However, in this modification example, since an exhaust pipe is provided, it is reasonable to arrange the measurement pipe inside the exhaust pipe and extend it outside through the second opening located outside the protective clothing body.
[0465] Note that the means for detecting an abnormality in the air volume is not limited to detecting the air volume in the above exhaust pipe or the pressure inside the protective clothing body, and for example, it may be configured to detect the carbon dioxide concentration or the oxygen concentration.
[0466] [e The Fifth Modification Example] In the fifth modification, similar to the second modification, after using a protective clothing body without an exhaust chamber 130, the wearer wears a hat equipped with an exhaust pipe inside the protective clothing body. However, in this modification, for example, assuming that it is used by a virus-infected person or a person who may be infected, a filter for removing and purifying a predetermined object such as a virus from the discharged air is provided in the exhaust pipe.
[0467] In this case, it is desirable to set the pressure inside the protective clothing body to 20 pascals or more. It is more desirable to add an exhaust fan. In this case, the air volume of the exhaust fan needs to not exceed the air volume of the blower fan (the fan for introducing outside air into the protective clothing body).
[0468] Note that when adding an exhaust fan, it is desirable to use an exhaust pipe and provide the exhaust fan and the filter in the exhaust pipe. However, when increasing the pressure inside the protective clothing body and not providing an exhaust fan but only providing a filter, the exhaust pipe may not be used. After strengthening the periphery of the air discharge hole, the filter may be detachably attached directly to the strengthened air discharge hole.
[0469] According to this modification, by providing a filter for purifying the air discharged from the protective clothing, it becomes possible to purify the wearer's exhaled breath and then discharge it. Therefore, it is possible to prevent droplets contained in the wearer's exhaled breath, cough, sneeze, etc. from being released to the outside. As a result, for example, in addition to preventing infection when the wearer is not infected with a virus or the like, it is possible to prevent the wearer from infecting others with the virus or the like when the wearer is infected.
[0470] [12 The 12th Embodiment] The protective clothing 100U according to the 12th embodiment will be described with reference to FIGS. 57 to 58. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0471] [Description of the structure] The protective clothing 100U according to this embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0472] [a Protective clothing body] As shown in FIG. 57, the protective clothing body 1U is formed by a polyethylene film P so as to cover only the head above the neck of the wearer W.
[0473] Further, the protective clothing body 1U is provided with a neck air leakage prevention means 103U at a position corresponding to the neck of the wearer. The neck air leakage prevention means 103U has, as shown in FIG. 57, a string-like member 1032 similar to the neck air leakage prevention means 103M according to the tenth embodiment and a cord stopper 1033, and in addition, a string passage portion 1034.
[0474] The string passage portion 1034 is a portion where a cylindrical space through which a string can be passed is formed so as to go around the neck of the wearer W near the lower end of the protective clothing body 1U, and both ends of the string-like member 1032 can be led out from two hole portions 1034a.
[0475] The string passage portion 1034 is formed, for example, by folding back the lower end portion of the protective clothing body 1U (the hem portion located around the neck of the wearer W of the polyethylene film P forming the protective clothing body 1U) upward over one turn, doubling the film near the lower end of the protective clothing body 1U, and then welding the portion over one turn at two upper and lower positions. After forming a space through which the string-like member 1032 can be passed between the welded portions, holes are made in the film on the outer surface side of the portion to form two hole portions 1034a.
[0476] Further, for example, an elongated polyethylene film is arranged around the lower end of the protective clothing body 1U (the hem portion located around the wearer's neck of the polyethylene film P forming the protective clothing body 1U). After doubling the film in this portion, such an elongated polyethylene film is welded around the circumference at two upper and lower positions, thereby forming a space through which the string-like member 1032 can pass between the welded portions. Then, holes are made in the film on the outer surface side of this portion to form two hole portions 1034a, and it can also be manufactured in this way.
[0477] In any case, it is desirable that a further film is attached around the hole portion 1034a as a reinforcing member and is strengthened.
[0478] Also, at two left and right positions in front of the vicinity of the lower end of the protective clothing body 1U, similar to the protective clothing body 1R of the protective clothing 100R according to the 11th embodiment, a strip-shaped member 150U for undressing the protective clothing body 1U is provided. However, in this embodiment, since the protective clothing body 1U does not have a portion below the air leakage prevention means 103U and is formed short downward, accordingly, the undressing strip 150U is also formed shorter than the undressing strip 150 according to the 11th embodiment.
[0479] Also, as shown in FIG. 57, similar to the 11th embodiment, above the front neck air leakage prevention means 103U of the protective clothing body 1U, a fan mounting hole 11R, which is a rectangularly formed hole through which the fan 4R can be mounted, is formed, and the periphery thereof is reinforced by a reinforcing sheet 111R.
[0480] [b Fan] The fan used in this embodiment is the same fan 4R as in the 11th embodiment, which incorporates a centrifugal fan.
[0481] [c Strip-shaped member] As shown in Fig. 57, the belt-like member 20U is a member for winding around the wearer's neck and positioned inside the protective clothing body 1U. The wearer W will put on the protective clothing body 1U after winding the belt-like member 20U in advance and positioning the neck air leakage prevention means 103U on the belt-like member 20U.
[0482] Similar to the belt-like member 20 according to the 11th embodiment, the belt-like member 20U is formed in a belt shape, has a first extension part 202 and a first surface fastener 204 provided on the first extension part 202 at one end, and a second extension part 203 and a second surface fastener 205 provided on the second extension part 203 at the other end. However, the configuration of the main body part is different from that of the belt-like member 20 according to the 11th embodiment.
[0483] That is, as shown in Figs. 57 and 58, the main body part 201U of the belt-like member 20U includes two belt-like fabrics, namely, a first fabric 2011 located on the wearer W side when winding around the wearer W's neck, and a second fabric 2012 located on the side opposite to the wearer W side when winding around the wearer W's neck. Further, at a plurality of locations, a guide member 2013 which is a plate-like member with opposing ends bent in the same direction to form a protruding part 2013a is provided.
[0484] As shown in Fig. 58, the second fabric 2012 is formed with a narrower width compared to the first fabric 2011, and at a first joint part 2014 formed along one end of the second fabric 2012 and a second joint part 2015 formed along the other end of the second fabric 2012, the first fabric 2011 and the second fabric 2012 are joined by a method such as sewing.
[0485] Also, the first joint part 2014 and the second joint part 2015 are formed intermittently, and a plurality of locations where the first fabric 2011 and the second fabric 2012 are not joined are formed in the main body part 201U. As shown in Fig. 58, the guide member 2013 is attached to the main body part 201U by passing it between the first fabric 2011 and the second fabric 2012 with the protruding part 2013a protruding toward the second fabric 2012 side at such locations.
[0486] As the first base material 2011 and the second base material 2012, similar to the main body portion 201 of the belt-like member 20 according to the eleventh embodiment, for example, a double raschel fabric or the like, which has excellent breathability and allows air to pass through in the vertical direction when the wearer W is wearing it, is preferably used. Note that the same base material may be used for the first base material 2011 and the second base material 2012, or different base materials may be used. When using different base materials, as the first base material 2011 that comes into contact with the neck of the wearer W, a base material with a good texture is selected, and as the second base material 2012 that does not come into contact with the neck of the wearer W, a base material with good breathability is preferably selected. Further, the guide member 2013 is formed of a hard material such as resin or metal, for example.
[0487] Note that the main body portion 201U is preferably composed of the first base material 2011, the second base material 2012, and the guide member 2013 as described above, but is not limited thereto, and it is sufficient that the protruding portion 2013a of the guide member 2013 protrudes on one surface side of the belt-like member. For example, it may be formed by joining the guide member 2013 to a single belt-like base material by a method such as adhesion or sewing.
[0488] [d Power supply unit] As the power supply unit, similar to the second embodiment and the like, unlike the first embodiment, it is not directly connected below the fan 4R, is separated from the fan 4R, and a power supply unit 5A connected to the fan 4R by a power cable 6 is used.
[0489] [e Power cable] The power cable 6 is a cable that connects the same power supply unit 5A as in the second embodiment and the like and the fan 4R.
[0490] [(2) Explanation of effects] According to the protective clothing 100U according to this embodiment, as shown in FIG. 57, when worn such that the string-like member 1032 of the neck air leakage prevention means 103U is positioned on the belt-like member 20U, the protruding portions 2013a of the guide member 2013 provided on the belt-like member 20U are positioned above and below the string-like member 1032. As a result, since the position of the string-like member 1032 of the neck air leakage prevention means 103U is restricted between the protruding portions 2013a of the guide member 2013, for example, even when the wearer W moves violently, the position of the string-like member 1032 of the neck air leakage prevention means 103U can be prevented from shifting from above the belt-like member 20U. As a result, the effect of the belt-like member 20U, that is, as described in the 11th embodiment, the film forming the protective clothing main body 1U by the air leakage prevention means 103U comes into direct contact with the neck of the wearer W, or the neck of the wearer W is compressed, etc., It becomes easier to maintain the effect of preventing the wearer W from feeling discomfort, and the effect of discharging an appropriate amount of air from the neck to prevent the neck of the wearer W from getting stuffy.
[0491] [13 13th Embodiment] The protective clothing 100V according to the 13th embodiment will be described with reference to FIGS. 59 to 65. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0492] [(1) Description of Configuration] The protective clothing 100V according to this embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0493] [a Protective Clothing Main Body] As shown in Fig. 59, the protective clothing body 1V is formed by a polyethylene film P so as to cover the head above the wearer W's neck. Also, similar to the tenth and eleventh embodiments and the like, the portion of the protective clothing body 1V corresponding to the neck of the wearer W is formed to be long downward, but this portion is not provided with a neck air leakage prevention means 103M composed of, for example, a loop 1031, a string-like member 1032, and a cord stopper 1033. At the lower end, a positioning mark 140V, which is a strip-shaped mark used for positioning when winding a rubber band 50 around the neck of the wearer W as described later, is formed by printing, for example, in a conspicuous color such as red, on the film forming the protective clothing body 1V.
[0494] Further, the protective clothing body 1V is provided with an air discharge hole 12V near the top of the wearer W's head, and is provided with a discharge part filter 170 so as to cover the air discharge hole 12V. Also, the protective clothing body 1V is provided with earpiece holes 180 for attaching earpieces 40, which will be described later, at positions corresponding to the ears of the wearer W on both the left and right sides.
[0495] Also, the protective clothing body 1V is provided with an air guide 190 that guides the air introduced by the fan 4V in the direction where the wearer's nose is located at a portion located below the fan 4V on the inner surface side. As shown in Fig. 59, the air guide 190 is formed of a material such as plastic so as to be provided with a plate-shaped member obliquely upward from below the fan 4V. Also, it is preferable that the accuracy of attachment of the air guide 190 can be adjusted.
[0496] In addition, in order to more efficiently guide the air introduced into the protective clothing body 1V by the fan 4V to the nostrils of the wearer W, an air intake mask that covers the nose may be attached to the face of the wearer W.
[0497] The discharge part filter 170 is a filter attached to the outer surface side of the protective clothing body 1V so as to cover the air discharge hole 12V as shown in Figs. 59 and 60 for the following two purposes.
[0498] As for the type of filter to be used, similar to the filter provided in the filter part of the fan, an appropriate and optimal type of filter may be selected according to the object to be protected, such as a virus, that the wearer W wants to protect.
[0499] Also, the means of attaching the discharge part filter 170 to the protective clothing body 1V can be arbitrary as long as it is attached without gaps. For example, as shown in FIG. 60, by using a double-sided tape 1701 with a thickness of about 1 mm to adhere the end of the discharge part filter 170 to the polyethylene film P constituting the protective clothing body 1V, it can be attached. Also, as used when attaching the fan to the fan mounting hole of the protective clothing body in each of the above embodiments, the discharge part filter 170 may be detachably attached by using a predetermined pressing tool or the like to sandwich the periphery of the air discharge hole 12V.
[0500] The first object of the protective clothing 100V according to this embodiment including the discharge part filter 170 is to remove droplets containing viruses in the exhaled breath of the wearer W of the protective clothing 100V when the wearer W is infected with a virus or the like, and prevent infection to others.
[0501] As shown in FIG. 60(b), during normal use of the protective clothing 100V, since the inside of the protective clothing body 1V is under positive pressure, the discharge part filter 170 bulges to the outer surface side of the protective clothing body 1V, moves away from the air discharge hole 12V, and a gap is generated between the discharge part filter 170 and the polyethylene film P forming the protective clothing body 1V. As a result, the entire part of the discharge part filter 170 except the part adhered to the polyethylene film P by the double-sided tape 1701 becomes the effective area and functions as a filter medium for filtering air. Therefore, the speed at which air passes through the discharge part filter 170 becomes small, and the collection efficiency by the discharge part filter 170 is improved.
[0502] The second objective of the protective garment 100V according to the present embodiment is to suppress the reverse flow of outside air from the air discharge holes 12V when the wearer W takes a strong intake of air and the inside of the protective garment body 1V temporarily becomes negative pressure.
[0503] As shown in FIG. 60(c), when the inside of the protective garment body 1V becomes negative pressure due to the strong intake of air by the wearer W, the air pressure outside the protective garment body 1V becomes higher. Therefore, a force is applied to the discharge part filter 170 from the outer surface side of the protective garment body 1V, and the discharge part filter 170 is pressed against the air discharge holes 12V. As a result, the effective area of the discharge part filter 170 that functions as a filter medium for filtering air is reduced to the same area as the air discharge holes 12V, so that the amount of outside air entering the protective garment body 1V from the air discharge holes 12V can be significantly suppressed.
[0504] Even when the discharge part filter 170 is provided so as to cover the air discharge holes 12V as in the protective garment 100V according to the present embodiment, if a discharge part filter 170 with a small pressure loss is used, most of the factors affecting the pressure inside the protective garment body 1V related to the discharge of air from the protective garment body 1V are the area of the air discharge holes 12V.
[0505] [b Earpiece] As shown in FIGS. 59 and 61, the earpiece 40 is a member for making it easier for the wearer W to hear outside sounds, which is attached to the protective garment body 1V by inserting it through the earpiece hole 180.
[0506] As shown in FIG. 61, the earpiece 40 is formed in a funnel shape, and the thinner end is used by inserting it through the earpiece hole 180. In addition, near the tip of the end, a hole is formed in a shape that allows an earplug to be inserted, so that it can be inserted into the wearer W's ear hole without any gap. In addition, a diaphragm 401 is provided inside the earpiece 40 as shown in FIG. 61.
[0507] The purpose of the protective clothing 100V according to this embodiment to be provided with the earpiece 40 is as follows. That is, when the vibration of the fan 4V is large, especially when the wearer W exhales, the internal pressure in the protective clothing main body 1V becomes high, and the polyethylene film P forming the protective clothing main body 1V is in a stretched state. Therefore, the vibration of the fan 4V is transmitted to the film, and the vibration of the fan 4V may be annoying to the wearer W.
[0508] As shown in FIG. 61, the earpiece 40 is formed in a funnel shape and includes a diaphragm 401 inside. Therefore, external sounds are collected at the open portion located on the outer surface side of the protective clothing main body 1V, and the collected sounds are transmitted to the diaphragm 401, enabling the wearer W to hear external sounds without passing through the polyethylene film P forming the protective clothing main body 1V. Also, although the polyethylene film P is in contact with the earpiece 40, since the mass of the earpiece 40 is sufficiently larger than the mass of that portion of the polyethylene film P, the vibration of the fan 4V is not transmitted to the earpiece 40. The reason the earpiece 40 includes the diaphragm 401 inside is to cut off the contact between the mucous membrane of the wearer W's ear and the outside air.
[0509] The shape of the earpiece 40 is not limited to a simple funnel shape. For example, it is more preferable to have a shape devised so as to be able to collect more sounds from the front. Also, when the vibration of the fan 4V is small and not annoying to the wearer W, it is not necessarily required to be provided with the earpiece 40.
[0510] [c Band-shaped member] As shown in FIG. 59, the band-shaped member 20V is a member for winding around the wearer's neck and being located inside the protective clothing main body 1V. The wearer W will put on the protective clothing main body 1V after winding the band-shaped member 20V in advance.
[0511] As shown in FIG. 62, the belt-like member 20V is formed in a belt shape, similar to the belt-like member 20 according to the 11th embodiment, and includes a first extension portion 202 and a first surface fastener 204 provided on the first extension portion 202 at one end, and a second extension portion 203 and a second surface fastener 205 provided on the second extension portion 203 at the other end. However, the configuration of the main body portion is different from that of the belt-like member 20 according to the 11th embodiment.
[0512] That is, as shown in FIG. 62, the main body portion 201V of the belt-like member 20V is composed of a double raschel fabric formed in a belt shape, and is provided with two types of guide members, namely, an A-type guide 2017 and a B-type guide 2018, at appropriate positions of the fabric portion 2016. Specifically, a B-type guide 2018 is provided at the center of the main body portion 201V, and A-type guides 2017 are provided at two positions on both sides thereof.
[0513] The A-type guide 2017 is formed by molding, for example, plastic, and as shown in FIG. 63, includes a mounting portion 2017a through which the fabric portion 2016 can pass, and an upper guide portion 2017b and a lower guide portion 2017c formed to protrude at two upper and lower positions. In a state where the mounting portion 2017a is attached to the fabric portion 2016, the upper guide portion 2017b and the lower guide portion 2017c protrude above and below the fabric portion 2016.
[0514] As shown in FIG. 63(a), the mounting portion 2017a is formed so that the fabric portion 2016 can be pushed in and attached. Further, a portion located on the opposite side where the upper guide portion 2017b and the lower guide portion 2017c are formed is formed thin, and furthermore, uneven processing is performed on the outer surface side of the portion. As described later, the above-mentioned portion of the mounting portion 2017a of the A-type guide 2017 is a portion that contacts the wearer W's neck when the belt-like member 20V is wound around the wearer W's neck. By being formed as described above, the area of the plastic forming the A-type guide 2017 in contact with the wearer W can be reduced, and the discomfort felt by the wearer W can be reduced.
[0515] The B-type guide 2018 is formed by molding, for example, plastic. As shown in FIG. 64, it includes a mounting portion 2018a through which the fabric portion 2016 can pass, and an upper guide portion 2018b and a lower guide portion 2018c formed to protrude at two upper and lower positions. In a state where the mounting portion 2018a is attached to the fabric portion 2016, the upper guide portion 2018b and the lower guide portion 2018c are formed to protrude above and below the fabric portion 2016. Among these, the lower guide portion 2018c is not different from the lower guide portion 2017c of the A-type guide 2017, but the upper guide portion 2018b is formed larger to guide the ring rubber 50 as described later, as shown in FIGS. 62 and 64.
[0516] As shown in FIG. 64, the mounting portion 2018a is formed to have the same shape as the mounting portion 2017a of the A-type guide 2017.
[0517] Note that the belt-like member 20V may be provided with means (not shown) for passing or attaching a hose-like pipe for ingesting a beverage at a predetermined position of the belt-like member 20V in order to enable the wearer W to ingest a beverage while wearing the protective clothing 100V. For example, it is preferably provided in a space formed by providing a gap between the first extension portion 202 and the main body portion 201V or between the second extension portion 203 and the main body portion 201V.
[0518] [d Ring rubber] The ring rubber 50 is a ring-shaped rubber made by cutting a large stretchable string-shaped rubber made of, for example, thermoplastic polyurethane or the like to an appropriate length and then tying both ends. The length of the string-shaped rubber forming the ring rubber 50 is appropriately set so that when wound around the neck of the wearer W as described later, the wearer W does not feel an excessive sense of compression and no large air leakage occurs. Also, as shown in FIG. 59, the ring rubber 50 includes a handle portion 501 formed such that both end portions of the string-shaped rubber extend from the knot.
[0519] [e Fan] The fan 4V used in this embodiment is a fan with a built-in centrifugal fan, similar to the sixth embodiment and the like. However, in a state where it is attached to the protective clothing body 1V, an air delivery portion is formed only below the air guide 190, and it is formed to deliver air only downward. As a result, the air introduced into the protective clothing body 1V by the fan 4V can be efficiently guided to the nostrils of the wearer W by the air guide 190.
[0520] [f Power supply unit] As the power supply unit, similar to the second embodiment and the like, unlike the first embodiment, it is not directly connected below the fan 4V. Instead, a power supply unit 5A that is separated from the fan 4V and connected to the fan 4V by a power cable 6 is used.
[0521] [g Power cable] The power cable 6 is a cable that connects the same power supply unit 5A as in the second embodiment and the like to the fan 4V.
[0522] [(2) Explanation of usage method] Next, the procedures for putting on and taking off the protective clothing 100V according to this embodiment before and after use will be explained. Note that explanations of procedures similar to those in other embodiments, such as the attachment of the power supply unit 5A and the power cable 6, will be omitted.
[0523] [a When putting on] First, the procedure for putting on the protective clothing 100V and starting its use will be explained. 1 Loosely wrap the belt-like member 20V around the neck of the wearer W. At this time, connect the first surface fastener 204 and the second surface fastener 205 on the front side of the wearer W. As a result, the B-type guide 2018 will be located behind the wearer W. 2 Cover the protective clothing body 1V with the fan 4V attached in advance, with the positioning mark 140V printed in red on the neck hem located below the belt-like member 20V after starting the fan 4V. When forming the three - wheel rubber 50 into a ring shape, move it downward after passing it through the wearer's head from the top of the wearer's head so that the handle portion 501 formed at the knot is positioned forward. At this time, move the wheel rubber 50 downward along the polyethylene film P of the protective clothing main body 1V located at the back of the wearer's head at the portion located behind the wearer W, and further, as shown in FIG. 65, move it so as to slide on the upper guide portion 2018b formed in a large size at the upper part of the B - type guide 2018, thereby moving it onto the fabric portion 2016 located between the upper guide portion 2018b and the lower guide portion 2018c of the belt - like member 20V. Also, at the position of the A - type guide 2017, move the wheel rubber 50 onto the fabric portion 2016 located between the upper guide portion 2017b and the lower guide portion 2017c of the belt - like member 20V. As a result, by pressing the polyethylene film P forming the protective clothing main body 1V against the belt - like member 20V with the wheel rubber 50, a neck air leakage prevention means can be formed, and the position of the wheel rubber 50 can be prevented from shifting by the upper and lower guide portions (the upper guide portion 2017b and the lower guide portion 2017c of the A - type guide 2017 and the upper guide portion 2018b and the lower guide portion 2018c of the B - type guide 2018).
[0524] [When undressing] Next, the procedure for undressing the protective clothing 100V after use will be described. Pull the handle portion 501 formed at the knot when forming the wheel rubber 50 into a ring shape, spread the wheel rubber 50, and then remove it upward. Undress the protective clothing main body 1V with the fan 4V attached.
[0525] [(3) Explanation of effects] Next, the effects of the protective clothing 100V according to the present embodiment will be described.
[0526] First, since no processing is required for the neck edge of the protective clothing body 1V other than printing a red line to form the positioning mark 140V, for example, compared to the case of providing the neck air leakage prevention means 103M including the loop 1031, the string-like member 1032, and the cord stopper 1033 as in the tenth embodiment, the eleventh embodiment, etc., the manufacturing of the protective clothing body 1V becomes easier.
[0527] Also, as in the twelfth embodiment, when a string passage portion 1034 is formed around the neck of the wearer W, the film of that portion overlaps doubly. Further, since the portion around the neck of the wearer W is the portion with the shortest outermost circumference, it will overlap multiply. In order to prevent excessive air leakage from around the neck of the wearer W, it is necessary to tighten relatively strongly. On the other hand, according to the protective clothing body 1V according to this embodiment in which the string passage portion 1034 is not formed, since the film of the portion located around the neck of the wearer W is single-layered, even if the tightening force is relatively weak, it is easy to prevent excessive air leakage from around the wearer's neck.
[0528] Also, since the belt-like member 20V includes the A-type guide 2017 and the B-type guide 2018, the ring rubber 50 can be smoothly positioned on the belt-like member 20V and it can be made difficult to deviate from that position.
[0529] Also, since the positioning mark 140V formed by printing a red line is formed near the neck edge of the protective clothing body 1V, by checking the positioning mark 140V, it becomes easier for the wearer W to confirm that the polyethylene film P forming the protective clothing body 1V by the ring rubber 50 is pressed against the belt-like member 20V and the neck air leakage prevention means is formed.
[0530] Also, since the main body portion 201V of the belt-like member 20V is formed of a double raschel fabric that slightly allows air to pass through in the vertical direction, it is possible to prevent the neck of the wearer W from getting stuffy.
[0531] [(4) Modification Example] Subsequently, a modification example of this embodiment will be described.
[0532] In the protective clothing 100V according to the above embodiment, as the discharge part filter 170 provided in the air discharge hole 12V, a filter with a large area and a small pressure loss is used, and the air discharge hole 12V is provided so as to cover the outer surface side of the protective clothing body 1V. Although the case where the pressure inside the protective clothing body 1V is determined by the area of the air discharge hole 12V has been described, as the discharge part filter 170, after using a filter with a high collection efficiency and a large pressure loss, the area of the air discharge hole 12V and the effective area of the discharge part filter 170 may be made substantially the same. The discharge part filter 170 may be provided inside or outside the protective clothing body 1V arbitrarily. In this case, the effective area of the discharge part filter 170, that is, the area of the air discharge hole 12V, will be uniquely determined by the pressure loss.
[0533] [14 14th Embodiment] The protective clothing 100W according to the 14th embodiment will be described with reference to FIGS. 66 to 68. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0534] [(1) Description of Configuration] The protective clothing 100W according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0535] [a Protective Clothing Body] As shown in FIG. 66, the protective clothing body 1W is formed of a polyethylene film P so as to cover the head above the wearer W's neck. Further, the portion corresponding to the wearer W's neck is formed long downward, and a neck air leakage prevention means is formed in this portion. In FIG. 66, the case where the air leakage prevention means is the neck air leakage prevention means 103M having the same loop 1031, string-like member 1032, and cord stopper 1033 as in the 10th embodiment and the like is illustrated, but it is not limited thereto.
[0536] Further, as shown in FIG. 66, an opening 200 is formed in the polyethylene film P that forms the protective clothing body 1W in front of the wearer's nose and mouth, and an intake filter 210, which is a planar filter, is provided so as to cover the entire opening.
[0537] The opening 200 is formed in a substantially square shape with each side being about 10 cm, and the intake filter 210 is formed in a substantially square shape slightly larger than the opening 200, and is attached without a gap by adhering to the polyethylene film P over the entire periphery of the opening 200. Also, as the type of filter used for the intake filter 210, similar to the filter of the filter part attached to the fan in other embodiments, an appropriate and optimal type of filter may be selected according to the object to be protected, such as a virus, that the wearer W wants to protect.
[0538] The protective clothing body 1W further includes an air supply cylinder 220, which is a cylindrical member provided so as to cover the opening 200 from the outer surface side of the protective clothing body 1W.
[0539] As shown in FIG. 66, one end of the air supply cylinder 220 is welded without a gap to the outer surface side of the polyethylene film P that forms the protective clothing body 1W along the periphery of the opening 200 so as to cover the entire opening 200, and the other end is provided with a fan attachment portion 230 for detachably attaching the fan 4V.
[0540] As the material of the air supply cylinder 220, for example, the same polyethylene film P as the other parts of the protective clothing body 1W may be used. Also, the configuration of the fan attachment portion 230 only needs to be able to detachably attach the fan 4W. For example, the periphery of the opening at the end opposite to the end welded to the periphery of the opening 200 of the air supply cylinder 220 is reinforced with a thick sheet or the like, and the fan 4W may be attached so as to sandwich the reinforced portion.
[0541] [b Fan] Unlike other embodiments, the fan 4W used in this embodiment does not need to be provided with a filter unit. As a specific configuration, it can be any type, whether it has a built-in propeller fan, a built-in centrifugal fan, or an intermediate type, but it must be attachable to the fan mounting portion 230 at the tip of the air supply cylinder 220. No matter what kind of fan is used, since the fan 4W is relatively light, about several tens of grams, various common and simple methods can be adopted for attaching it to the fan mounting portion 230 at the end of the air supply cylinder 220. In this case, as shown in FIG. 66, the fan 4W needs to be connectable to the exposed part on the outer surface side of the protective clothing body 1W of the fan 4W for the power cable 6.
[0542] [c Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4W as in the second embodiment and the like. Instead, a power supply unit 5A that is separated from the fan 4W and connected to the fan 4W by the power cable 6 is used.
[0543] [d Power cable] The power cable 6 is a cable that connects the same power supply unit 5A as in the second embodiment and the like and the fan 4W. As described above, in this embodiment, it is connected to the exposed part on the outer surface side of the protective clothing body 1W of the fan 4W.
[0544] [(2) Explanation of effects] Next, the effects of the protective clothing 100W according to this embodiment will be described.
[0545] As in the other embodiments described so far, when the filter is integrally provided with the fan, the projected area of the filter cannot be larger than the projected area of the part constituting the fan of the protective clothing. On the other hand, according to the present embodiment, a fan 4W and an intake filter 210 are separately provided at both ends of the air supply cylinder 220. When outside air is blown into the air supply cylinder 220 by the fan 4W, the pressure inside the air supply cylinder 220 becomes uniformly high, and a uniform pressure is applied to the front surface of the intake filter 210 formed in a planar shape. Clean air filtered by the intake filter 210 is supplied into the protective clothing body 1W. As a result, the projection area of the filter can be increased without being limited by the size of the fan 4W, so that it is possible to easily improve the collection ability.
[0546] Note that when the area of the intake filter 210 is increased, the intake filter 210 may be bent inward the protective clothing body 1W due to pressure and may come into contact with the mouth and nose of the wearer W. To prevent this, for example, the intake filter 210 itself or a support material formed of cardboard or the like may be provided on the inner surface side of the intake filter 210.
[0547] [(3) Modification Example] Subsequently, a modification example of the present embodiment will be described.
[0548] [a First Modification Example] A configuration not using the air supply cylinder 220 may be adopted as in the protective clothing 100X shown in FIG. 67. That is, in this modification example, as shown in FIG. 67, similar to other embodiments, after forming a fan mounting hole 11X reinforced by a reinforcing sheet 111X which is a flexible thick sheet in the protective clothing body 1X, a fan 4X having a cover portion 424X formed to fit on the inner periphery of the reinforcing sheet 111X is configured to be attached to the protective clothing body 1X by being pushed into the fan mounting hole 11X. In this case as well, the fan 4X does not need to include a filter portion. Further, it is preferable that a centrifugal fan is built in the fan 4X and air is sent out in all directions around.
[0549] In addition, as shown in FIG. 67, the protective clothing body 1X is provided with an intake filter 210X that is connected without a gap to the inner surface side of the polyethylene film P forming the protective clothing body 1X so as to isolate the location where the fan mounting hole 11X is formed within the protective clothing body 1X from other locations within the protective clothing body 1X.
[0550] Furthermore, the protective clothing body 1X is provided with an exhaust filter 170X that is attached to the outer surface side of the polyethylene film P constituting the protective clothing body 1X so as to cover the air discharge hole 12V. The exhaust filter 170X is also preferably formed to be of approximately the same size as the intake filters 210, 210X (a square with each side being approximately 10 cm), and its end is attached to the outer surface side of the polyethylene film P forming the protective clothing body 1X by means such as adhesion without a gap.
[0551] In this case as well, as the intake filter 210X and the exhaust filter 170X, an appropriate and optimal type of filter may be selected according to the object to be protected, such as a virus, that the wearer W wishes to be protected from.
[0552] The procedure for attaching the fan 4X to the protective clothing body 1X according to this modified example will be described.
[0553] As described above, the periphery of the fan mounting hole 11X is reinforced by a reinforcing sheet 111X, which is a thick and flexible sheet, and the inner circumference of the reinforcing sheet 111X and the outer circumference of the fan 4X are formed to fit together. To attach the fan 4X, it is necessary to push the fan 4X with the cover portion 424X from the outer surface side of the protective clothing body 1X into the fan mounting hole 11X. At this time, there is a risk that the wearer W may touch the intake filter 210X with the hand opposite to the one holding the cover portion 424X.
[0554] Touching the intake filter 210X leads to the risk of contaminating the intake filter 210X. Therefore, in order to prevent the intake filter 210X from being contaminated before the start of using the protective clothing 100X, during the manufacture of the protective clothing body 1X, after attaching the intake filter 210X to the protective clothing body 1X, it is preferable to attach a thin protective film (not shown) so as to cover the entire inner surface side of the intake filter 210X. By peeling off this protective film after attaching the fan 4X, it becomes possible to prevent touching and contaminating the intake filter 210X until the fan 4X is attached.
[0555] Regarding the exhaust filter 170X as well, it is preferable to attach a thin protective film so as to cover it from the outer surface side and peel it off immediately before the start of using the protective clothing 100X.
[0556] [b Second Modification Example] The second modification example is one in which the configuration of the fan mounting hole of the protective clothing body 1X of the protective clothing 100X according to the first modification example is changed.
[0557] As shown in FIG. 68, the fan mounting hole 11Y is formed in a rectangular shape, and a mounting hole reinforcing tool 112 formed by molding plastic is adhered to the outer surface side of the surrounding polyethylene film P. The mounting hole reinforcing tool 112 is formed in a rectangular shape that is long in the left - right direction in a front view, and at the left and right ends, there are formed gripping parts 1121 that protrude forward (the outer surface side of the protective clothing body).
[0558] The fan to be attached to the fan mounting hole 11Y is formed with a highly elastic fitting part (not shown). When attaching the fan to the fan mounting hole 11Y, hold the gripping part 1121 with one hand and hold the edge of the cover part of the fan with the other hand, and push the fan into the fan mounting hole 11Y, so that it can be easily attached without touching the intake filter 210X.
[0559] [15 15th Embodiment] The protective clothing 100Z according to the 15th embodiment will be described with reference to FIGS. 69 to 70. For the parts similar to those in the first embodiment, the same reference numerals will be given and the description will be omitted, and only the parts different from the first embodiment will be described.
[0560] [(1) Description of the configuration] The protective clothing 100Z according to this embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0561] [a Protective clothing body] As shown in FIG. 69, the protective clothing body 1Z is formed by a polyethylene film P so as to cover the head above the wearer W's neck.
[0562] Further, the protective clothing body 1Z is provided with a neck air leakage prevention means 103Z at a position corresponding to the wearer's neck. As shown in FIG. 69, the neck air leakage prevention means 103Z is provided with a plurality of loops 1031 on the outer surface side of the portion located around the wearer W's neck in the same manner as in the 10th embodiment and the like, and a ring-shaped rubber 1036 formed by making a rubber string into a ring shape is passed through the loops 1031. However, in this embodiment, the loops 1031 are provided only at the rear part of the protective clothing body 1Z.
[0563] The length of the ring-shaped rubber 1036 is appropriately set so that when the protective clothing body 1Z is worn, the neck portion of the protective clothing body 1Z can be brought into close contact with the wearer W's neck to such an extent that an excessive sense of compression is not felt, and the wearer W's head can be easily passed through during attachment and detachment. Further, the ring-shaped rubber 1036 is configured to be detachable at one place by a hook (not shown), and by removing this, it can be passed through the loops 1031.
[0564] Before the wearer W wears the protective clothing body 1Z, as described above, the loop 1031 is provided only at the rear part of the protective clothing body 1Z. The ring-shaped rubber 1036 is inserted through such a loop 1031, and the hooks (not shown) provided at both ends hang down in a released state. In this state, the rubber string forming the ring-shaped rubber 1036 is not in a ring shape, and since the force due to this is not applied to the polyethylene film P forming the protective clothing body 1Z, the neck edge of the protective clothing body 1Z remains spread out.
[0565] When the wearer W puts on the protective clothing body 1Z, as described above, since the neck edge of the protective clothing body 1Z remains spread out, the wearer can easily put it on. Also, after covering the protective clothing body 1Z, by connecting the hooks (not shown) at both ends of the rubber string forming the ring-shaped rubber 1036, the ring-shaped rubber 1036 is arranged to go around the wearer's neck and function as a means for preventing air leakage at the neck part.
[0566] When the wearer W takes off the protective clothing body 1Z, the connection of the hooks (not shown) of the ring-shaped rubber 1036 is released to make the neck edge of the protective clothing body 1Z spread out. Since the neck edge is in a spread-out state, the wearer W can safely take off the protective clothing body 1Z.
[0567] Also, the protective clothing body 1Z includes a fan mounting hole 11X reinforced by a reinforcing sheet 111X, an intake filter 210X, and an exhaust filter 170X, similar to the first modification of the 14th embodiment.
[0568] [b Belt-shaped member] The belt-shaped member 20Z is a member for winding around the wearer's neck so as to be located inside the protective clothing body 1Z, as shown in Fig. 69. The wearer W will cover the protective clothing body 1Z after winding the belt-shaped member 20Z in advance.
[0569] The belt-shaped member 20Z is composed of two belt-shaped members, that is, a first belt-shaped member 206 and a second belt-shaped member 207, as shown in Fig. 69. The first strip member 206 is the same as the strip member 20 according to the 11th embodiment, and its main body is formed of double raschel fabric or the like and does not have a guide member. The second strip member 207 is the same as the strip member 20V according to the 13th embodiment, and is provided with an A-type guide 2017 and a B-type guide 2018 on its main body.
[0570] Also, the first strip member 206 and the second strip member 207 are formed such that the first strip member 206 has a wider width (longer vertical length in the state of being wound around the wearer W's neck) than the second strip member 207.
[0571] The wearer W first winds the first strip member 206, then winds the second strip member 207 so as to overlap it, and then, in the same manner as in the 13th embodiment, wears the protective clothing body 1Z such that the ring-shaped rubber 1036 of the neck air leakage prevention means 103Z is positioned on the second strip member 207.
[0572] Thereby, while preventing the position of the ring-shaped rubber 1036 of the neck air leakage prevention means 103Z from shifting, since only the first strip member 206 touches the wearer W's neck, it is possible to prevent the A-type guide 2017 and the B-type guide 2018 provided on the second strip member 207 from touching the wearer W's neck and causing discomfort.
[0573] Note that the first strip member 206 and the second strip member 207 may be integrated in advance.
[0574] [c Fan] The fan used in this embodiment is the same as the first modification of the 14th embodiment, a fan 4X having a built-in centrifugal fan and having a cover portion 424X, and is formed so as to fit on the inner periphery of the reinforcing sheet 111X and is configured to be attached to the protective clothing body 1Z by being pushed into the fan mounting hole 11X.
[0575] [d Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4X as in the second embodiment and the like. Instead, a power supply unit 5A that is separated from the fan 4X and connected to the fan 4X by a power cable 6 is used.
[0576] [e Power cable] The power cable 6 is a cable that connects the same power supply unit 5A as in the second embodiment and the like to the fan 4X. Also in this case, as shown in Fig. 69, the power cable 6 is connected to a portion exposed on the outer surface side of the protective clothing body 1X of the fan 4X and will be wired on the outer surface side of the protective clothing body 1X. Therefore, in order to prevent such a power cable 6 from getting in the way, it is preferable to provide a fixture (not shown) so that the power cable 6 can be fixed to, for example, the ring-shaped rubber 1036 of the neck air leakage prevention means 103Z.
[0577] [(2) Explanation of the manufacturing method] Next, the procedure for manufacturing the protective clothing body 1Z of the protective clothing 100Z according to this embodiment will be described with reference to Fig. 70.
[0578] [a Step 1] After overlapping a silicon sheet SI on a template paper G printed with a welding line G1, place a rectangular bag-shaped body similar to a general transparent garbage bag about 38 cm wide and 53 cm long formed by a polyethylene film P on the silicon sheet SI as shown in Fig. 70(a). In Fig. 70(a), the open end (opening) of the bag-shaped body is located downward. Further, place a Teflon (registered trademark) sheet T on the bag-shaped body. The reason for laying the silicon sheet SI is to make the heat sealer difficult to cool during welding described later, and the reason for overlapping the Teflon (registered trademark) sheet T is to prevent the polyethylene film P from melting excessively during welding described later.
[0579] [b Step 2] Using a heat sealer, weld two polyethylene films P on both sides of the bag-shaped body along the welding line G1. The welded line is designated as the fifth joining line J5.
[0580] [Step 3 of c process] Expand the corner D shown in Fig. 70(a) of the bag-shaped body. Specifically, insert a hand through the opening of the bag-shaped body, and in the vicinity of the corner D, spread the two overlapping polyethylene films P apart and then crush them in the front-rear direction in Fig. 70(a) so that, as shown in Fig. 70(b), a triangle with the corner D at the apex is formed upward.
[0581] [Step 4 of d process] In the state shown in Fig. 70(b), below the corner D, use a heat sealer to linearly weld the polyethylene films P of the double-overlapped bag-shaped body. The welded line is designated as the sixth joining line J6. As shown in Fig. 70(c), the sixth joining line J6 will be formed so as to be the base of an isosceles triangle with the corner D at the apex. Also, the sixth joining line J6 is preferably formed at a position where the length is about 20 cm.
[0582] [Step 5 of e process] As shown in Fig. 70(d), cut the upper part of the bag-shaped body along the sixth joining line J6. At this time, cut slightly above the sixth joining line J6 so as not to create a hole in the joint at the sixth joining line J6.
[0583] [Step 6 of f process] Insert a hand through the opening of the bag-shaped body B in the state shown in Fig. 70(d), spread the two overlapping polyethylene films P apart and then crush them in the left-right direction in Fig. 70(d) so that the two polyethylene films P overlap again as in Fig. 70(a), and then, as shown in Fig. 70(e), cut the upper part of the bag-shaped body along the fifth joining line J5. At this time, cut slightly above the fifth joining line J5 so as not to create a hole in the joint at the fifth joining line J5.
[0584] [Step g 7] Turn the bag-shaped body that has been completed up to Step 6 inside out so that the surface located on the inner side faces the outer side.
[0585] [Step h 8] As shown in FIG. 70(f), after opening the fan mounting hole 11X and the air discharge hole 12V, attach a loop 1031 by welding, for example, two locations above and below of an elongated film near the lower end portion.
[0586] [Step i 9] Attach an intake filter 210X so as to cover the fan mounting hole 11X from the inner side, attach an exhaust filter 170X so as to cover the air discharge hole 12V from the outer side, attach a reinforcing sheet 111X to the outer side around the fan mounting hole 11X, and then pass a ring-shaped rubber 1036 through the loop 1031.
[0587] By going through the above process, the protective clothing main body 1Z can be easily manufactured from a general polyethylene bag-shaped body.
[0588] [16th 16th Embodiment] The protective clothing 100AA according to the 16th embodiment will be described with reference to FIGS. 71 to 74. Note that the same parts as those in the 1st embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the 1st embodiment will be described.
[0589] [(1) Description of Configuration] The protective clothing 100AA according to the present embodiment is different from the protective clothing 100 according to the 1st embodiment in the following points.
[0590] [a Protective Clothing Main Body] As shown in FIG. 71, the protective clothing main body 1AA is formed to cover the head above the neck of the wearer W, and includes a face guard portion 240 and a film portion 250.
[0591] As shown in FIG. 71, the face guard portion 240 is a portion located in front of the face of the wearer W of the protective clothing body 1AA. For example, by molding a transparent, hard and thin sheet by vacuum forming or the like, it is formed harder than the film portion 250. Further, the film portion 250 is formed of a soft polyethylene film P or the like and is connected to the edge of the face guard portion 240.
[0592] Note that the connection between the face guard portion 240 and the film portion 250 may be made non-detachable by adhesion or detachable, depending on the purpose of use.
[0593] As shown in FIGS. 71 and 72, a drop-in portion 270 is formed on the face guard portion 240 so as to protrude to the outer surface side. A fan mounting hole 11AA for mounting the fan 4AA is opened in the drop-in portion 270, and the fan 4AA can be detachably mounted in the fan mounting hole 11AA.
[0594] Since the face guard portion 240 that covers the front of the face of the wearer W is manufactured by vacuum forming or the like using a transparent, hard and thin sheet as a material, a clear field of view can be ensured, the shape is stable, the fan 4AA does not sag due to its own weight, and there is no need to reinforce the periphery of the fan mounting hole 11AA.
[0595] Further, with respect to the film portion 250, since it does not cover the front of the wearer's face and there is no problem with transparency, the degree of freedom in material selection increases, and for example, a highly flame-retardant material can be used.
[0596] As shown in FIGS. 71 and 73, an intake filter 210AA for filtering the outside air taken into the protective clothing body 1AA by the fan 4AA attached to the fan mounting hole 11AA is provided on the inner surface side of the face guard portion 240 so as to cover the fan mounting hole 11AA. The intake filter 210AA is formed in a substantially square shape with a side length of about 100 mm in both the vertical and horizontal directions.
[0597] As shown in FIG. 73(b), a portion located around the fan mounting hole 11AA on the inner surface side of the face guard portion 240 is formed with a suction portion filter 210AA and a pressing frame 260 for pressing the suction portion filter 210AA provided around the suction portion filter 210AA, and a dropping portion 270 for dropping and fixing them.
[0598] As shown in FIG. 73(a), pressing bars 2601 are continuous in the vertical direction on the left and right of the pressing frame 260, and the face guard portion 240 is provided with bar locking portions 280 formed above and below the dropping portion 270 so as to be able to fix the pressing bars 2601. By fixing the pressing bars 2601 to the bar locking portions 280, the suction portion filter 210AA and the pressing frame 260 can be fixed to the face guard portion 240.
[0599] With such a structure, by inserting the suction portion filter 210AA and the pressing frame 260 into the dropping portion 270 and pushing in the pressing frame 260, the pressing bars 2601 are locked to the bar locking portions 280, and the suction portion filter 210AA and the pressing frame 260 are detachably attached to the face guard portion 240 without gaps.
[0600] When the protective clothing body 1AA is used disposable, it is not necessary to provide such a structure, and the suction portion filter 210AA may simply be adhered to the inner surface side of the face guard portion 240 so as to cover the fan mounting hole 11AA.
[0601] As shown in FIG. 71, the discharge portion filter 170AA is a filter attached to the film portion 250 so as to cover the air discharge hole 12AA formed at the rear of the wearer's head of the film portion 250 of the protective clothing body 1AA, and is attached to the film portion 250 via a mounting frame 290 formed on the outer surface side of the film portion 250 so as to surround the air discharge hole 12AA.
[0602] Whether to attach the discharge part filter 170AA or not, and if attaching, whether to detachably attach it to the film part 250, adhesively attach it so that it cannot be detached, attach it using the attachment frame 290, attach it without using the attachment frame 290, provide it on the inner surface side of the film part 250, provide it on the outer surface side, etc. can be appropriately changed according to the purpose of use of the protective clothing 100AA.
[0603] [b Strip-shaped member] As shown in FIG. 71, the strip-shaped member 20AA is a member for winding around the neck of the wearer W so as to be located inside the protective clothing body 1AA. The wearer W will put on the protective clothing body 1AA after winding the strip-shaped member 20AA in advance.
[0604] The strip-shaped member 20AA uses, for example, an MF (microfiber) filter made of continuous foam urethane sponge with a thickness of about 5 mm and a width of about 40 mm, and cuts 208 with a vertical depth of about 10 mm are formed at both upper and lower ends in some places.
[0605] Since the sponge-made MF filter can be stretched, for example, by attaching hook-and-loop fasteners to both ends and stretching it to wind around the neck, only the central 20 mm portion without the cut 208 is stretched, and as a result, as shown in FIG. 71, the upper and lower portions where the cut 208 is formed bulge outward, and for example, the ring-shaped rubber 1036 similar to the 15th embodiment can be wound around the neck of the wearer W in a stable state.
[0606] Also, a strip-shaped member 20AA made of a stretched MF filter is located between the neck of the wearer W and the polyethylene film P forming the film part 250 of the protective clothing body 1AA, functions as a means for preventing air leakage at the neck, and can prevent the neck from getting stuffy by allowing a small amount of air to leak from the MF filter. Furthermore, even if the inside of the protective clothing body 1AA becomes negative pressure and outside air flows in from the neck, the inflowing outside air will be filtered to some extent by the MF filter of the strip-shaped member 20AA.
[0607] [c Fan] As the fan 4AA used in this embodiment, for example, an axial flow fan with a size of 40 mm square and a thickness of about 10 mm is used, and it is provided with a cover portion 424AA for preventing direct impact of droplets and the like. Since the protective clothing body 1AA is provided with the intake filter 210AA, the fan 4AA does not need to be provided with a filter. After filtering the outside air with the intake filter 210AA provided on the inner surface side of the protective clothing body 1AA, it blows air into the protective clothing body 1AA at about 60 L per minute.
[0608] Note that the fan 4AA is not limited to an axial flow fan, and the use of a mixed flow fan is also preferable, and the use of a centrifugal fan is also possible. Also in this case, as shown in FIGS. 71 and 73(b), the fan 4AA needs to be able to connect the power cable 6 to the portion exposed on the outer surface side of the protective clothing body 1AA of the fan 4AA.
[0609] [d Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4AA as in the second embodiment and the like. A power supply unit 5A that is separated from the fan 4AA and connected to the fan 4AA by the power cable 6 is used.
[0610] [e Power cable] The power cable 6 is a cable that connects the same power supply unit 5A as in the second embodiment and the like and the fan 4AA. As described above, in this embodiment, it is connected to the portion exposed on the outer surface side of the protective clothing body 1AA of the fan 4AA.
[0611] [(2) Explanation of manufacturing method] Next, the procedure for manufacturing the film portion 250 of the protective clothing body 1AA of the protective clothing 100AA according to this embodiment will be described with reference to FIG. 74.
[0612] [a Step 1] Cut the polyethylene film P into the shape shown in FIG. 74(a).
[0613] [Step 2 of the process] The polyethylene film P cut in Step 1 is folded at the central part in the vertical direction.
[0614] [Step 3 of the process] As shown in Fig. 74(b), after welding the overlapping polyethylene film P at the seventh joining line J7 and the eighth joining line J8, the outside of the eighth joining line J8 is cut off.
[0615] By going through such a process, an opening A1 corresponding to the shape of the edge of the face guard part 240 is formed in the front, and a film part 250 with an opening A2 formed in the part corresponding to the lower neck hem can be easily manufactured.
[0616] [(3) Considerations regarding pressure and air volume] Regarding pressure and air volume, consider the case when using a fan 4AA with an air volume of 60 L per minute at 25 Pascal.
[0617] First, consider the air volume. Generally, the carbon dioxide emission of an adult male during moderate labor is about 1 L per minute. Therefore, when the mixed gas with completely uniform exhaled air and blown air is discharged from the air discharge hole 12AA, the increase in the carbon dioxide concentration inside the protective clothing body 1AA is 1 / 61, that is, about 1.64%, which hardly causes a problem.
[0618] Also, according to the simulation, when the blowing part by the fan 4AA is located near the nostrils of the wearer W and the air discharge hole 12AA is on the opposite side of the blowing part, exhaled air is efficiently discharged, and the carbon dioxide concentration of the inhaled air further decreases significantly, making it even less likely to cause a problem.
[0619] Next, consider the pressure. In the case of the filter used in this embodiment, the pressure loss of the intake filter 210AA is about 5 Pascal, and the pressure loss of the discharge filter 170AA is about 2.5 Pascal. Therefore, the pressure inside the protective clothing body 1AA can be set to about 17.5 Pascal by the fan 4AA.
[0620] If the pressure inside the protective clothing body 1AA is about 17.5 pascals, even for the protective clothing 100AA according to this embodiment in which the face guard portion 240 of the protective clothing body 1AA becomes non-film and the whole becomes heavy, it can be stably used.
[0621] In addition, when the fan to be used is determined, the targets of the air volume and pressure are determined, and the pressure loss of the filter due to the air volume is determined, in order to make the internal pressure and the air volume as targeted, the size of the air discharge hole may be adjusted.
[0622] [(4) Explanation of effects] Next, the effects of the protective clothing 100AA according to this embodiment will be described.
[0623] According to the protective clothing 100AA of this embodiment, since the protective clothing body 1AA is composed of the face guard portion 240 and the film portion 250, the face guard portion 240 can provide a clear field of vision to the wearer W, and when the film portion 250 is formed of a highly flame-retardant material, a highly flame-retardant protective clothing body 1AA can be realized.
[0624] Also, even when a very general-purpose propeller fan with a size of 40 mm square and a thickness of about 10 mm is used as the fan 4AA, a large air volume with almost no carbon dioxide problem can be realized. Further, by providing the position of the air discharge hole 12AA on the back of the wearer W on the side opposite to the mounting position of the fan 4AA and the position of the nostrils of the wearer A, the carbon dioxide problem is less likely to occur.
[0625] In addition, since the intake filter 210AA is provided separately from the fan 4AA, the area of the filter can be increased. As a result, since the permeation rate of the filter becomes small, the collection rate can be improved, and since the pressure loss can be reduced, the positive pressure degree inside the protective clothing body 1AA can be increased.
[0626] Further, by using an MF filter for the strip-shaped member 20AA and further providing the cut 208, it is possible to prevent the wearer W's neck from getting stuffy, and even when outside air flows in from the neck in case of an emergency, the inflowing air can be filtered to some extent. Further, it is possible to make it difficult for the ring-shaped rubber 1036 or the like to shift.
[0627] Further, since the hard part is only the face guard part 240 in front of the face of the wearer W, it does not take up much space during transportation or storage.
[0628] [17 17th Embodiment] The protective clothing 100BB according to the 17th embodiment will be described with reference to FIGS. 75 to 82. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first embodiment will be described.
[0629] [(1) Description of the Configuration] The protective clothing 100BB according to the present embodiment is different from the protective clothing 100 according to the first embodiment in the following points.
[0630] [a Protective Clothing Body] As shown in FIG. 75, the protective clothing body 1BB is formed so as to cover only the front (face part) of the wearer W's head and not cover the rear of the head. Specifically, the protective clothing body 1BB includes a main body part 300 formed in a shape covering the front of the wearer W's head with a transparent hard material, and a film member 310 stretched on the surface of the main body part 300 located on the wearer's face side.
[0631] [(a) Main Body Part] The main body part 300 is formed, for example, in a deep bowl-shaped shape by vacuum molding a transparent hard plastic plate having a thickness of about 1 mm.
[0632] Further, as shown in FIGS. 75 to 77, at the upper part of the main body 300, a first filter housing part 3001 is formed which is recessed downward so as to have a rectangular shape in plan view and in which an intake filter 210BB is housed. As shown in FIG. 77(b), a fan mounting hole 11BB is formed at the bottom of the first filter housing part 3001 to connect the space between the protective clothing main body 1BB and the body (face) of the wearer W and the space outside the protective clothing main body 1BB. As will be described later, the fan 4BB is mounted in the first filter housing part 3001 so as to sandwich the intake filter 210BB and cover the fan mounting hole 11BB. That is, the first filter housing part 3001 corresponds to the fan mounting part in the present invention.
[0633] Further, as shown in FIGS. 75 to 77, at the lower part of the main body 300, a second filter housing part 3002 is formed which is recessed upward so as to have a rectangular shape in plan view and in which an exhaust filter 170BB is housed. As shown in FIG. 77(b), an air discharge hole 12BB is formed at the bottom of the second filter housing part 3002, which is an opening for discharging the air introduced into the space between the protective clothing main body 1BB and the body (face) of the wearer W by the fan 4BB described later along the face of the wearer after the air has circulated.
[0634] Further, as shown in FIGS. 75 to 77, at the position in front of the forehead of the wearer W on the front inner surface side of the main body 300, an iron plate 3003 is provided, which is an iron plate-like member for attaching the main body 300 to a magnet 741 provided on a holder 74 of a head belt 7BB described later.
[0635] Further, at the end of the main body 300, that is, at the edge of the opening for the wearer W of the main body 300 formed in a face shape to put the face in, a connecting part 3004 is formed which is formed in a planar shape so that a film member 310 can be adhered over the entire circumference.
[0636] [(b) Film member] The film member 310 is a thin film having a thickness of about 20 to 100 μm and having elasticity, and as shown in FIGS. 75 to 77, it covers an opening for the wearer W of the main body portion 300 formed in a planar shape to put his / her face in, and is adhesively bonded to the main body portion 300 without a gap at the connecting portion 3004 provided on the entire circumference around the opening.
[0637] Further, as shown in FIG. 77(a), the film member 310 has a face-out hole 3101 for the wearer W to put his / her face out formed in an elliptical shape at the central portion. As shown in FIG. 75, when the wearer W puts his / her face into the face-out hole 3101 and the main body portion 300 is arranged at an appropriate position in front of the wearer W's face, the end portions around the face-out hole 3101 of the film member 310 come into contact with the periphery of the wearer W's face over the entire circumference, and air leakage from around the wearer W's face portion is prevented. That is, this film member 310 functions as a facial air leakage prevention means in the present invention.
[0638] Further, as will be described later, the protective clothing main body 1BB is configured such that the iron plate 3003 provided in the main body portion 300 can be arranged at a predetermined position by being attracted to the magnet 741 of the holder 74 provided in the head belt 7BB as will be described later. Therefore, as described above, it becomes easy for the wearer W to arrange the main body portion 300 at an appropriate position where the facial air leakage prevention means is formed by the film member 310.
[0639] When the wearer W puts his / her face out from the face-out hole 3101 of the film member 310, as shown in FIG. 75(b), the periphery of the wearer W's face portion and the vicinity of the face-out hole 3101 of the film member 310 come into contact. Therefore, it is preferable to perform embossing on the vicinity of the face-out hole 3101 of the film member 310 in order to prevent giving the wearer W an uncomfortable feeling due to stickiness. Further, in order to further improve the discomfort felt by the wearer W, for example, as shown in FIG. 78, a face contact sheet 320 made of a non-woven fabric or a mesh material with a good texture is arranged outside the film member 310 (the side facing the wearer W) using a ring rubber 330 or the like, so that the film member 310 does not directly contact the periphery of the wearer W's face. The use of such a face contact sheet 320 is also effective as a countermeasure for people allergic to the material used for the film member 310. In addition, in FIG. 78, the case where the face contact sheet 320 is formed so as not to overlap the face exposure hole 3101 of the film member 310 is illustrated, but the face contact sheet 320 may be provided up to the inside of the edge of the face exposure hole 3101. In that case, the holes provided in the face contact sheet 320 are preferably processed so as to be substantially expandable according to the shape of the wearer W's face and the state of the face exposure hole 3101, for example, by performing processing such as a number of radial folds or cuts around the holes of the face contact sheet 320.
[0640] Note that the method of attaching the film member 310 to the main body portion 300 is not limited to the method of adhering to the planar connection portion 3004 as described above. For example, a groove may be provided at the edge of the main body portion 300, and the film member 310 may be detachably attached to the main body portion 300 using a general method such as tying the end of the film member 310 to the groove with a string.
[0641] [b Intake filter] As shown in FIGS. 75 to 77, the intake filter 210BB is a filter attached to the main body portion 300 of the protective clothing main body 1BB so as to be stored in the first filter storage portion 3001. As shown in FIG. 79, it is formed in a rectangular shape having a reinforcing frame 2101 around it in a plan view, and is formed so that it can be fitted into the first filter storage portion 3001 so as to cover the fan attachment hole 11BB.
[0642] [c Exhaust filter] The discharge part filter 170BB is a filter attached to the main body 300 so as to be stored in the second filter storage part 3002 as shown in FIGS. 75 to 77. Similar to the intake part filter 210BB, it is formed in a rectangular shape with a reinforcing frame around it in a plan view, and is formed so as to cover the air discharge hole 12BB and be fitted into the second filter storage part 3002.
[0643] [d Belt for head] The head belt 7BB is a member worn on the head of the wearer W as shown in FIGS. 75 and 76, and is used to fix the protective clothing main body 1BB to the wearer W at an appropriate position. The head belt 7BB includes a headband 73 as a wearing tool wound around the head of the wearer W and worn by the wearer W, and a holder 74 for attaching the protective clothing main body 1BB to the headband 73.
[0644] As shown in FIGS. 75 and 76, the headband 73 is a belt-shaped member worn on the wearer W so as to go around the head, and is for attaching the holder 74 to the wearer W so as to be located in front of the forehead of the wearer W. Note that the specific configuration of the headband 73, such as the material, is arbitrary as long as it can be firmly worn on the head of the wearer W so that the position does not shift even when the protective clothing main body 1BB is attached to the holder 74.
[0645] The holder 74 is a member formed of a hard material so as to protrude forward from the portion of the headband 73 located on the forehead of the wearer W, and is provided with a magnet 741 at the tip. As described above, since the iron plate 3003 is provided at the front position of the forehead of the wearer W on the inner surface side of the main body 300 of the protective clothing main body 1BB, when the wearer W approaches the protective clothing main body 1BB from the front with the head belt 7BB attached to the head, the iron plate 3003 is attracted by the magnet 741, and the main body 300 of the protective clothing main body 1BB can be fixed at a predetermined appropriate position.
[0646] Further, the holder 74 is configured to be bendable freely at a movable portion 742 provided near the connection portion with the headband 73. Thereby, the attachment angle of the protective clothing main body 1BB with respect to the face of the wearer W can be adjusted. Further, the holder 74 may be stretchable back and forth so that the front-back position of the protective clothing main body 1BB with respect to the face of the wearer W can be adjusted. Thereby, for example, as shown in FIG. 80, by bending the holder 74 upward, it is also possible to lift the protective clothing main body 1BB upward while being connected to the head belt 7BB and prevent it from covering the face of the wearer W.
[0647] [e fan] As shown in FIGS. 75 to 77, the fan 4BB used in the present embodiment includes a fan main body 46 in which a propeller as an axial flow fan is housed and which is provided with a cover portion 424BB for preventing direct hits of droplets and the like, and an extension portion 47 formed so as to extend in a cylindrical shape with a hollow interior to the side where the air of the fan main body 46 is discharged.
[0648] As shown in FIG. 77(B), the extension portion 47 covers the side where the air of the fan main body 46 is discharged, and the shape of the end portion on the side opposite to the side connected to the fan main body 46 is formed to match the shape of the first filter storage portion 3001 of the main body portion 300 of the protective clothing main body 1BB. The extension portion 47 is configured to be detachably attached to the main body portion 300 of the protective clothing main body 1BB by fitting the extension portion 47 into the first filter storage portion 3001.
[0649] Further, with the intake filter 210BB stored in the first filter storage portion 3001, by further attaching the fan 4BB to the first filter storage portion 3001, the end portion of the intake filter 210BB is sandwiched and pressed between the extension portion 47 of the fan 4BB and the portion around the fan attachment hole 11BB of the first filter storage portion 3001, and the intake filter 210BB is attached to the main body portion 300 of the protective clothing main body 1BB so as to cover the fan attachment hole 11BB without any gaps. That is, the extension portion 47 of the fan 4BB not only contributes to the attachment of the fan 4BB to the protective clothing body 1BB, but also functions as a pressing tool for pressing the intake filter 210BB against the protective clothing body 1BB and attaching it so as to cover the fan mounting hole 11BB.
[0650] Note that the fan body 46 of the fan 4BB is not limited to an axial flow fan, and the use of a mixed flow fan is also preferable, and the use of a centrifugal fan is also possible. Also, as shown in FIGS. 75 and 76, the fan 4BB is configured such that the power cable 6 can be connected to a portion exposed outside the fan 4BB.
[0651] [Pressing tool for the discharge filter] The pressing tool 60 for the discharge filter is a member for attaching the discharge filter 170BB to the second filter storage portion 3002 of the main body portion 300 of the protective clothing body 1BB. The shape of one end portion is formed to match the shape of the second filter storage portion 3002, and as shown in FIGS. 75 to 77, it can be detachably attached to the main body portion 300 of the protective clothing body 1BB by being fitted into the second filter storage portion 3002. A plurality of holes 601 are formed in the pressing tool 60 for the discharge filter, and the air discharged from the air discharge hole 12BB formed in the second filter storage portion 3002 of the main body portion 300 of the protective clothing body 1BB can be discharged to the outside through the holes 601.
[0652] Also, with the discharge filter 170BB stored in the second filter storage portion 3002, by further attaching the pressing tool 60 for the discharge filter to the second filter storage portion 3002, the end portion of the discharge filter 170BB is sandwiched and pressed between the pressing tool 60 for the discharge filter and the portion around the air discharge hole 12BB of the second filter storage portion 3002, and the discharge filter 170BB is attached to the main body portion 300 of the protective clothing body 1BB without a gap so as to cover the air discharge hole 12BB.
[0653] [g Power supply unit] As the power supply unit, unlike the first embodiment, it is not directly connected below the fan 4BB, but is separated from the fan 4BB and uses a power supply unit 5A connected to the fan 4BB by a power cable 6, similar to the second embodiment and the like.
[0654] [h Power cable] The power cable 6 is a cable that connects the same power supply unit 5A as in the second embodiment and the like to the fan 4BB. As described above, in this embodiment, it is connected to the portion exposed outside the protective clothing body 1BB of the fan 4BB. Also, the power cable 6 may be wired along the connection portion 3004 etc. of the main body portion 300 by a general method not shown in the figure, for example.
[0655] [(2) Explanation of usage method] Next, the procedures for putting on the protective clothing 100BB according to this embodiment before use, taking it off after use, and temporarily taking it off during use will be explained.
[0656] [a When putting on] First, the procedure for wearing the protective clothing 100BB and starting use will be explained. 1 Attach the head belt 7BB to the head of the wearer W. 2 Connect the power supply unit 5A to the fan 4BB attached to the protective clothing body 1BB via the power cable 6 to drive the fan 4BB. 3 Cover the face with the protective clothing body 1BB and connect the magnet 741 of the holder 74 of the head belt 7BB and the iron plate 3003 of the main body portion 300 of the protective clothing body 1BB.
[0657] [b When taking off] Next, the procedure for taking off the protective clothing 100BB after use will be explained.
[0658] 1 Twist the protective clothing body 1BB horizontally to release the connection between the magnet 741 of the holder 74 of the head belt 7BB and the iron plate 3003 of the main body part 300 of the protective clothing body 1BB, and remove the protective clothing body 1BB from the head belt 7BB.
[0659] [c At the first stage of undressing] 1 As shown in Fig. 80, bend the holder 74 of the head belt 7BB upward at the movable part 742 and lift the protective clothing body 1BB upward.
[0660] [(3) Explanation of effects] Next, the effects of the protective clothing 100BB according to this embodiment will be described.
[0661] As described above, at the time of undressing after use and at the first stage of undressing, the protective clothing 100BB can be undressed very easily, so it is difficult for the wearer W to touch the contaminated parts during undressing, and the risk of being infected with viruses, etc. during undressing can be significantly reduced.
[0662] Also, since the ears of the wearer W are not covered, it is not difficult to hear external sounds.
[0663] In addition, a fan mounting hole 11BB is provided at the upper part of the protective clothing body 1BB, and an air discharge hole 12BB is provided at the lower part. Air filtered by the intake filter 210BB from the upper part is introduced into the protective clothing body 1BB, flows downward, and is discharged from the lower air discharge hole 12BB. Therefore, the exhaled air of the wearer W also goes downward, and it is possible to prevent carbon dioxide contained in the exhaled air from accumulating in the protective clothing body 1BB and increasing the carbon dioxide concentration in the protective clothing body 1BB.
[0664] Also, since the main body part 300 of the protective clothing body 1BB is formed of a hard material, it is not easily affected by the wind.
[0665] [(4) Modification example] Subsequently, a modification example of this embodiment will be described.
[0666] [a First modification example] In the above-described embodiment, the head belt 7BB was used to hold the protective clothing body 1BB at an appropriate position with respect to the face of the wearer W. Instead of this, like the protective clothing 100CC shown in FIGS. 81 and 82, the protective clothing body 1CC may include a rubber belt 3005 which is a string-like member formed of rubber provided in the main body portion 300CC, and a sponge sheet 340 which is a thin sponge disposed inside the film member 310.
[0667] As shown in FIG. 81, the main body portion 300CC is provided with rubber fasteners 3006 for fixing the rubber belts 3005 at four locations in total, two locations on each of the left and right sides, and four rubber belts 3005 are provided so as to cross at the back of the head of the wearer W using the rubber fasteners 3006.
[0668] Also, as shown in FIG. 82, inside the film member 310, a sponge sheet 340 is provided in which a second face-exposing hole 3401 larger than the face-exposing hole 3101 is opened at a position corresponding to the face-exposing hole 3101 of the film member 310.
[0669] According to this modified example, the wearer W can optimize the positional relationship between the main body portion 300CC of the protective clothing body 1CC and the face of the wearer W by the repulsive force of the sponge sheet 340 and the pulling force of the rubber belt 3005 without using the head belt 7BB.
[0670] Also, unevenness on the side portion of the face of the wearer W, such as a depression outside the eye, is filled by the repulsive force of the sponge sheet 340, and it is possible to prevent a gap through which air leaks from occurring between the film member 310 and the side portion of the face of the wearer W.
[0671] [b Other Modified Examples] What has been described in the above-described embodiment and the first modified example is an example considering that the protective clothing bodies 1BB and 1CC can be repeatedly used. For example, it is optional to do the following.
[0672] The intake filter 210BB and the exhaust filter 170BB may be adhered to the main body parts 300 and 300CC of the protective clothing main bodies 1BB and 1CC and may be non-replaceable.
[0673] The film member 310 may be replaceable without being adhered to the main body parts 300 and 300CC.
[0674] The positioning of the protective clothing main body 1BB with respect to the face of the wearer W is not limited to the method of fixing with a magnet using the above-mentioned head belt 7BB, and other general methods may be used. For example, it is also possible to integrally attach it to an appropriate position of the headband 73 without using the holder 74 of the head belt 7BB.
[0675] Instead of the head belt 7BB, the wearer W may wear a hat as a wearing tool worn by the wearer W, which is provided with a holder 74 to fix the protective clothing main body 1BB.
[0676] The exhaust filter 170BB is preferably provided in case air enters from the air exhaust hole 12BB, but it is also possible to adopt a configuration without it.
[0677] The positional relationship between the first filter storage part 3001 to which the fan 4BB is attached and from which air is introduced through the fan attachment hole 11BB and the second filter storage part 3002 provided with the air exhaust hole 12BB is not limited to the above. However, in this embodiment where the air introduction part into the protective clothing main bodies 1BB and 1CC is above and the air exhaust part is below, and the range covered by the protective clothing main bodies 1BB and 1CC is narrow and the air volume in the protective clothing main bodies 1BB and 1CC is small, it is extremely important to prevent the carbon dioxide concentration in the protective clothing main bodies 1BB and 1CC from becoming high. That is, since the exhalation from the nose of the wearer W is downward, if the air exhaust part is above, the efficiency of discharging the wearer's exhalation outside the protective clothing main body decreases, and the carbon dioxide concentration in the protective clothing main body may increase. However, this can be prevented by having the air introduction part above and the air exhaust part below.
[0678] There is a depression at the position outside the eyes on the face of the wearer W, and there may be a small gap between the film member 310. In the first modification example, the case of filling this with the repulsive force of the sponge sheet 340 has been described, but the method of filling the gap such as the depression outside the eyes is not limited to this, and various general methods can be used.
[0679] Regarding the film member 310 that functions as a facial air leakage prevention means, it is also possible to reduce the stretchability, increase the thickness, or use different materials depending on the part.
[0680] As a means for arranging the protective clothing bodies 1BB and 1CC at appropriate positions, in the above embodiment, the case of using the head belt 7BB has been described, and in the first modification example, the case of including the rubber belt 3005 provided in the main body part 300CC and the sponge sheet 340 arranged inside the film member 310 has been described, but it is not limited to this, and various general methods can be used.
[0681] Also, in the above embodiment and the first modification example, the case of manufacturing the main body parts 300 and 300CC of the protective clothing body by vacuum molding using a hard material has been described, but the molding method is not limited to this, and any method can be used.
[0682] Also, in the above embodiment and the first modification example, the first filter storage part 3001 and the second filter storage part 3002 are formed by providing depressions in the main body parts 300 and 300CC, but it is not limited to this, and they may be formed by joining separately molded parts.
[0683] Also, a frame body having a function as a separately formed reinforcing material may be further provided at the part (connection part 3004) where the film member 310 of the main body parts 300 and 300CC is attached, and the main body parts 300 and 300CC and the film member 310 may be joined through this frame body. In this case, for example, the main body parts 300 and 300CC are formed of a thin material with a thickness of about 0.5 to 0.7 mm, and the frame provided in the connecting part 3004 is formed to have a thickness of about 1.5 mm by, for example, injection molding or the like, so that the strength can be improved while suppressing an increase in the overall weight, and since the degree of freedom in design is increased, it becomes easier to realize a high-performance product.
[0684] Since the main body parts 300 and 300CC are hard and their shapes are difficult to deform, when the wearer W breathes deeply, although the possibility is low, it cannot be completely denied that the inside of the protective clothing main bodies 1BB and 1CC becomes a negative pressure and a small amount of outside air flows in through the gaps. Therefore, in order to avoid the inside of the protective clothing main body from becoming a strong negative pressure, an appropriate part of the main body part may be opened, and a buffer part such as that in the sixth modification of the ninth embodiment or the tenth embodiment may be formed there using a thin film.
[0685] In the case of this embodiment, since the weight of the entire protective clothing is 200 to 500 grams, it is more preferable to provide a weight support means for supporting the weight by the head.
[0686] Also, depending on the purpose of use, the discharge part filter 170BB and / or the intake part filter 210BB may not be used, or filters with low filtration performance and low pressure loss may be used as these filters. That is, the following uses are possible.
[0687] [(a) When neither filter is provided] Although it cannot filter air, it functions as a high-performance face shield that completely protects the face of the wearer W.
[0688] [(b) When only the intake part filter is provided] Since the wearer W can inhale the air purified by the intake part filter 210BB, the risk of the wearer W being infected with a virus or the like can be reduced.
[0689] [(c) When only the exhaust part filter is provided] When the wearer W is infected with a virus or the like, by filtering the air exhausted from the protective clothing, the risk of infecting others can be reduced.
[0690] [(d) When both filters are provided] Both the risk that the wearer W is infected with a virus or the like and the risk of infecting others when the wearer W is infected with a virus or the like can be reduced.
[0691] Instead of the film member 310, a formed rigid sheet member may be used. In this case, a face opening hole for the wearer to expose the face may be provided in the sheet member by post-processing during or after molding. Further, by arranging a member whose shape can be changed, such as a sponge, around the face opening hole, the member can be pressed against and brought into contact with the periphery of the wearer W's face, so that it can be used as an air leakage prevention means for preventing air leakage from around the wearer W's face.
[0692] [18 18th Embodiment] The protective clothing 100DD according to the 18th embodiment will be described with reference to FIGS. 83 to 94. Since this embodiment is similar to the first modification of the 17th embodiment, the same parts as those of the first modification of the 17th embodiment are denoted by the same reference numerals and the description thereof is omitted, and only the parts different from the first modification of the 17th embodiment will be described.
[0693] [(1) Description of the configuration] The protective clothing 100DD according to this embodiment is different from the protective clothing 100CC according to the first modification of the 17th embodiment in the following points.
[0694] [a Protective clothing body] As shown in Fig. 83, the protective clothing body 1DD is formed to cover only the front (facial area) of the wearer W's head and not the rear of the head, similar to the protective clothing body 1CC according to the first modification of the 17th embodiment. It includes a main body portion 300DD formed in a shape that covers the front of the wearer W's head with a transparent hard material, and a face-edge molding member 350 and a sponge member 360 provided on the surface of the main body portion 300DD located on the wearer's face side.
[0695] [(a) Main body portion] As shown in Figs. 83 to 86, the main body portion 300DD is formed in a deep bowl-like shape by vacuum molding, for example, a transparent hard plastic plate with a thickness of about 1 mm, similar to the main body portion 300CC according to the first modification of the 17th embodiment. As shown in Figs. 86 to 88, it has a rectangular fan mounting hole 11DD on the upper surface and a rectangular air discharge hole 12DD on the lower surface. However, it does not have a first filter storage portion 3001 and a second filter storage portion 3002. As will be described later, the fan 4DD and the discharge portion filter mounting portion 70 are connected to the main body portion 300DD using adhesive paper.
[0696] Also, at two locations on the upper and lower sides of the left and right of the main body portion 300DD, there are formed rubber belt mounting portions 3007 formed to be flat so that the rubber belt 3005 can be easily attached. The rubber belt 3005 is attached to the rubber belt mounting portion 3007 using, for example, double-sided tape.
[0697] [(b) Face-edge molding member] As shown in Figs. 83, 85, and 86, the face-edge molding member 350 is a member molded in advance into a shape along the wearer's face using, for example, an elastic plastic material with a thickness of about 0.5 mm, and a face-out hole 3501 is formed in the central portion. Also, a sponge member 360 described later is provided at the edge of the face-out hole 3501.
[0698] The face-edge forming member 350 is formed, for example, by vacuum forming, and includes a connecting portion 3502 that protrudes in a flange shape around it. By welding the connecting portion 3502 and the connecting portion 3004 formed in a flange shape at the edge of the main body portion 300DD, it is integrated with the main body portion 300DD.
[0699] Note that, for the material used for the face-edge forming member 350, it is preferable to avoid using a transparent material and use a material that is difficult for light to pass through, such as a black material. If a transparent material is used, light emitted from lighting or the like behind the wearer W may enter through the gap between the wearer W's head and the main body portion 300DD, reflect on the inner surface of the main body portion 300DD, and the reflected light may enter the wearer W's eyes.
[0700] [(c) Sponge member] As shown in FIGS. 83, 85, and 86, the sponge member 360 is a member formed of a thick sponge having a closed-cell structure that does not allow air to pass through, and is arranged on the side facing the face of the wearer W around the face-out hole 3501 of the face-edge forming member 350.
[0701] In the present embodiment, since the face-edge forming member 350 is formed in a shape that follows the face of the wearer W as described above, air leakage from around the wearer W's face is prevented to a certain extent. The sponge member 360 is arranged at the portion around the face-out hole 3501, and the gap between the face-edge forming member 350 and the wearer W's face is filled with the sponge member 360 that does not allow air leakage, thereby further preventing air leakage from around the wearer W's face. That is, both the face-edge forming member 350 and the sponge member 360 function as means for preventing air leakage from the face portion in the present invention.
[0702] If it is desired to ensure that even minute gaps caused by wrinkles or the like on the face of the wearer W that cannot be absorbed by the sponge member 360 are completely sealed, for example, a low-viscosity cream or the like can be applied to the corresponding portion of the wearer W's face to further prevent air leakage.
[0703] Also, in order to reduce the gaps caused by wrinkles or the like on the face of the wearer W, it is preferable to use, as the sponge for the sponge member 360, a thick and very soft sponge having an open-cell structure with a high foaming degree. However, in this case, since there is a risk that air may leak from the sponge member 360, it is preferable to further use a face cushion sheet (not shown) located between the sponge member 360 and the face of the wearer W to prevent air leakage.
[0704] As the material of the face cushion sheet, a film having a certain degree of moisture permeability, for example, a polyethylene film with a thickness of about 10 μm, is suitable. The thinner the face cushion sheet, the better the moisture permeability, and since it does not inhibit the cushioning property of the sponge, it is preferable to use a film as thin as possible within the range that can maintain a strength that is not easily torn. A film without moisture permeability is not preferable because the skin will become swollen when it comes into contact with the skin of the wearer W for a long time.
[0705] Regarding the face cushion sheet as well, when using a plastic material with low stretchability, by stretching and three-dimensionally processing in advance the portion located near the face opening hole 3501 along the face of the wearer W, the adhesion to the face of the wearer W can be improved.
[0706] In addition, when using a film with little air leakage as the face cushion sheet, for example, by configuring the end portions of the entire outer circumference of the face cushion sheet to be attached to the main body portion 300DD without gaps and detachably using a rubber string, the role of the face-side molding member 350 can be specialized only in the role of closely attaching the sponge member 360 and the face cushion sheet to the face of the wearer W. Also in this case, by closely attaching the sponge member 360 and the face cushion sheet to the face of the wearer W with the face-side molding member 350, a means for preventing air leakage from the face portion is formed. Further, with a similar configuration, the roles of the face-side molding member 350 and the sponge member 360 may be specialized only for the role of closely attaching the face contact sheet to the face of the wearer W. Also in this case, by closely attaching the face contact sheet to the face of the wearer W with the face-side molding member 350 and the sponge member 360, a face portion air leakage prevention means is formed.
[0707] Further, a face contact sheet is surely positioned between the sponge member 360 and the face of the wearer W at the portion where the sponge member 360 contacts the face of the wearer W, and the inner edge of the face contact sheet is routed through the face exposure hole 3501 to the back side of the face-side molding member 350 (the side facing forward when worn by the wearer W without the sponge member 360) so as to function as an air leakage prevention means, and it is preferably fastened to the said side of the face-side molding member 350.
[0708] Further, instead of the sponge member 360, for example, by packing a highly foamed sponge piece, feathers, etc. into a cylinder formed of a thin film, a dedicated air leakage prevention means with little air leakage and extremely adaptable to fine irregularities on the face is created, and this may be used by arranging it on the side facing the face of the wearer W around the face exposure hole 3501 of the face-side molding member 350.
[0709] Further, instead of the sponge member 360, for example, an extension member (not shown) formed of a rubber-like material such as silicon rubber with a thickness of about 1 mm is formed so as to extend at least 2 cm or more in the direction along the face from the entire circumference of the edge of the face exposure hole 3501 of the face-side molding member 350, and this may be arranged on the inner edge of the face exposure hole 3501 of the face-side molding member 350 to constitute a face portion air leakage prevention means. According to this configuration, when the protective clothing main body 1DD is attached to the face of the wearer W, as the main body portion 300DD moves to the face side, the area of contact between the extension member and the face of the wearer W gradually increases, and the gap with the face can also be absorbed.
[0710] [b fan] The fan 4DD used in this embodiment is composed of a canopy 410, a fan body 420, an extension part 430, an intake filter 440, a filter holding part 450, and an adhesive paper 460, and is attached to the main body part 300DD of the protective clothing main body 1DD so as to cover the fan mounting hole 11DD.
[0711] [(a) Canopy] The canopy 410 is a member for preventing the intrusion of dust, droplets, etc. into the fan body 420, and is provided above the fan body 420 at intervals by four columns 4101 as shown in FIGS. 84 and 85.
[0712] [(b) Fan body] The fan body 420 is a part that forms the main body of a fan having a function of generating an air flow including, for example, a propeller and a motor as an axial flow fan, and is attached to the extension part 430 so as to be stored in the fan body storage part 4301 of the extension part 430 as shown in FIGS. 86 and 87.
[0713] [(c) Extension part] The extension part 430 is a member that has a rectangular shape in plan view and is formed so that the width in the front - rear and left - right directions becomes wider downward, and is formed in a cylindrical shape having openings at the top and bottom.
[0714] The extension part 430 is provided with a fan body storage part 4301 for storing the fan body 420 at the upper end as shown in FIG. 87, and a filter pressing part 4302 for storing the intake filter 440 and fixing it to the filter holding part 450 to be described later at the lower end. Further, gripping parts 4303 for the wearer W to grip when attaching and detaching the fan 4DD from the protective clothing main body 1DD are formed on two opposite sides in plan view.
[0715] The fan body storage part 4301 is formed in a substantially rectangular shape whose inner circumference substantially coincides with the outer circumference of the fan body 420, and is formed so that the fan body 420 can be fitted and fixed. Further, the filter pressing portion 4302 is formed in a substantially rectangular shape whose outer periphery substantially coincides with the inner periphery of the filter holding portion 450 described later, and is formed so as to be fitted and fixed into the filter holding portion 450.
[0716] [(d) Intake filter] The intake filter 440 is a means for filtering the air introduced into the protective clothing body 1DD through the fan mounting hole 11DD. Similar to other embodiments, an appropriate and optimal type of filter may be selected according to the object to be protected, such as viruses, chemical substances, dust, etc., that the wearer W wants to protect. As shown in FIG. 87, the intake filter 440 is formed in a substantially rectangular shape whose outer periphery substantially coincides with the inner periphery of the filter holding portion 450 in plan view, and is housed in the filter holding portion 450 so that no gap is generated.
[0717] [(e) Filter holding portion] The filter holding portion 450 is a member formed in a ring shape that is substantially rectangular in plan view as shown in FIG. 87. The inner periphery substantially coincides with the outer periphery of the filter pressing portion 4302 of the extension portion 430, and is formed so that the filter pressing portion 4302 can be fitted and fixed.
[0718] On the inner peripheral side of the lower end portion of the filter holding portion 450, a flange 4501 is formed so as to protrude inward. By sandwiching the intake filter 440 between the lower end portion of the filter pressing portion 4302 of the extension portion 430 and the flange 4501 of the filter holding portion 450, the intake filter 440 can be fixed without a gap.
[0719] Further, the filter holding portion 450 is formed such that the shape and size of the opening formed in the center of the flange 4501 are substantially the same as the shape and size of the fan mounting hole 11DD of the main body portion 300DD of the protective clothing body 1DD.
[0720] [(f) Adhesive paper] The adhesive paper 460 is a sheet-like member with adhesive surfaces formed on both sides, and is formed to have substantially the same shape and size as the lower surface on which the flange 4501 of the filter holding portion 450 is formed as shown in FIG. 87. By adhering the lower surface of the filter holding portion 450 and the portion around the fan mounting hole 11DD of the main body portion 300DD of the protective clothing main body 1DD, the fan 4DD and the protective clothing main body 1DD are connected.
[0721] The specific configuration of the adhesive surface of the adhesive paper 460 is arbitrary as long as it has an adhesive force such that the fan 4DD does not come off from the protective clothing main body 1DD during the use of the protective clothing 100DD, and can be removed without difficulty when the wearer W applies a force to try to remove the fan 4DD from the protective clothing main body 1DD.
[0722] [c Exhaust part filter mounting part] The exhaust part filter mounting part 70 is a member for mounting a filter on the main body part 300DD of the protective clothing main body 1DD so as to cover the air exhaust hole 12DD. As shown in FIGS. 86 and 88, it is composed of a filter pressing part 701, an exhaust part filter 702, a filter holding part 703, and an adhesive paper 704.
[0723] [(a) Filter pressing part] The filter pressing part 701 is a member formed in a ring shape that is substantially rectangular in plan view as shown in FIG. 88. The outer periphery is formed in a substantially rectangular shape that substantially coincides with the inner periphery of the filter holding part 703 described later, and is formed so as to be fitted into and fixed to the filter holding part 703. Also, on two opposite sides in plan view, the filter pressing part 701 is formed with gripping parts 7011 for the wearer W to grasp when attaching and detaching the exhaust part filter mounting part 70 from the protective clothing main body 1DD.
[0724] [(b) Exhaust part filter] The discharge part filter 702 is a means for filtering air that has flowed into the protective clothing body 1DD through the air discharge hole 12DD, and also for filtering the air discharged from the protective clothing body 1DD through the air discharge hole 12DD. Similar to other embodiments, an appropriate and optimal type of filter may be selected according to the objects to be protected such as viruses, chemical substances, and dust. As shown in FIG. 88, the discharge part filter 702 is formed in a substantially rectangular shape whose outer periphery substantially coincides with the inner periphery of the filter holding part 703 in a plan view, and is housed in the filter holding part 703 so that no gap is generated.
[0725] [(...
Claims
1. A protective clothing body formed to cover at least a part of the face including the wearer's nostrils; An intake part for introducing air into the space between the protective clothing body and the wearer; An exhaust part for discharging the air in the space to the outside; An intake part filter provided in the intake part for filtering outside air; A fan for introducing purified outside air into the space through the intake part filter; A power supply part for supplying power to the fan, comprising: The protective clothing body includes a main body part that covers the front of the wearer's head; The main body part includes a transparent front part that covers the entire face, an upper surface part that protrudes toward the wearer from the upper end of the front part, and a lower surface part that protrudes toward the wearer from the lower end of the front part; The intake part is provided on the upper surface part; The exhaust part is provided on the lower surface part; The protective clothing is characterized in that the intake part and the exhaust part are provided opposite to the upper and lower ends of the protective clothing body.
2. The protective clothing according to claim 1, characterized in that the space is maintained at a positive pressure by the introduction of air by the fan.
3. The protective clothing according to claim 2, characterized in that the fan and the intake part are provided in this order with respect to the protective clothing body.
4. The protective clothing according to claim 2, characterized in that the intake part and the fan are provided in this order with respect to the protective clothing body.
5. The protective clothing according to any one of claims 1 to 4, characterized in that the exhaust part is provided with an exhaust part filter for filtering the air in the space and discharging it to the outside.
6. The protective clothing according to any one of claims 1 to 5, characterized in that the protective clothing body is provided with air leakage prevention means for preventing air leakage from the space by closely adhering to the wearer's body.
7. The protective clothing according to claim 6, characterized in that the air leakage prevention means is provided with an elastic body for preventing air leakage at a part that closely adheres to the wearer's body.
Citation Information
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