JP2006022434A - Dustproof hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dustproof hood whose stretchable cloth member can accurately be fit to the face of a wearer. <P>SOLUTION: This dustproof food 1 which has a food main body 2 formed of an air- and moisture-permeable sheet material to cover the head 21 and neck 22 of a wearer 20 and which is made by forming a face opening 3 for exposing the desired portion of the face in the hood main body 2 and disposing a stretchable belt-like member 4 on the periphery of the face opening 3 is characterized by forming the stretchable belt-like member 4 from an upper side belt-like cloth portion 4a and a lower side belt-like cloth portion 4b extended in an approximately U-shaped form, joining both the ends of the upper side belt-like cloth portion 4a to both the ends of the lower side belt-like cloth portion 4b, and sewing both the ends of a fitting stretchable band 6 which is hooked on the rear side portions of the head 21 of the wearer 20 from the outside of the hood main body 2 and is backward pulled to tightly fit to the belt-like member 4 to the face of the wearer 20, on both the joint portions 5, 5 of the belt-like cloth portions 4a, 4b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dust-proof hood used in factories that manufacture pharmaceuticals, cosmetics, foods, etc., clean rooms that manufacture semiconductors, and the like.

Worn by a worker who works in a factory that manufactures pharmaceuticals, cosmetics, food, etc., a clean room that manufactures semiconductors, etc. and a person wearing a hood, such as an inspector, and encapsulates the head, neck, and shoulders of the wearer For example, Patent Document 1 discloses a dust-proof hood that prevents dust attached to the wearer and the wearer's hair from entering the product. The dustproof hood described in Patent Document 1 has a hood body formed so as to cover the periphery of the head and neck of the wearer, and a face opening is formed in the hood body. A belt-like stretchable cloth member is provided around the periphery of the portion, and the outer edge of the stretchable cloth member is sewn to the inside of the periphery of the face opening portion, so that the stretchable cloth member serving as a free end can be The inner edge is open to the inside of the dustproof hood to form a face contact surface separated from the face opening, and the face contact surface made of this stretchable fabric member always makes contact with the face with a soft touch. The gap with the face opening can be closed, and the scattering of foreign matter such as hair is prevented.
JP-A-10-25613

  The human face has various shapes such as a round face, a long round face, a square face and the like. However, in the dustproof hood of Patent Document 1, the inner edge, which is the free end of the stretchable cloth member, forms a face contact surface. Corresponding to the shape of the face, it is difficult to reliably close the gap between the face and the stretchable cloth member. There is a possibility that a gap is easily formed when facing or facing upward or downward, and the hair or the like may be scattered.

  The present invention eliminates the problems in the conventional dust-proof hood as described above, and makes the stretchable cloth member closely adhere to the face according to the various shapes and forms of the hood wearer. An object of the present invention is to provide a dust hood that does not cause a gap between the face and the elastic cloth member.

  Means for solving the above-described problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is configured such that the head 21 and neck 22 of the wearer 20 are made of a breathable and moisture-permeable sheet material. And the hood main body 2 formed so as to cover at least the head 21 and the neck 22 of the shoulder 23, and at least both eyes of the face of the wearer 20 are exposed to the hood main body 2. In the dust-proof hood 1 in which a face opening 3 is formed and a stretchable belt-like cloth member 4 is provided around the periphery of the opening 3, the stretchable belt-like cloth member 4 is located above the face opening 3. The upper belt-like cloth portion 4a extending substantially linearly along the peripheral edge portion 3a and the lower belt-like cloth portion 4b extending substantially U-shaped along the lower peripheral edge portion 3b of the face opening portion 3 Both ends of the lower belt-like cloth portion 4b are joined to both ends of the cloth portion 4a. The joint portions 5 and 5 of the belt-like cloth portions 4a and 4b are hooked from the outside of the hood main body 2 to the required portion on the rear side of the head 21 of the wearer 20, and the belt-like cloth portions 4a and 4b are attached to the wearer 20 The both ends of the elastic band 6 for adhesion for pulling back so that it may contact | adhere to the face of is attached.

  Claim 2 is the dust hood according to claim 1, wherein the contact elastic band 6 is substantially bisected at an intersection angle θ in the vicinity of the joint 5 between the upper belt-like cloth portion 4 a and the lower belt-like cloth portion 4 b. The end 6a of the stretchable band 6 is attached to the joint 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b in a state of being arranged at a position along the line 9.

  A third aspect of the present invention is the dust hood according to the first or second aspect, wherein the spectacles 24 worn by the wearer 20 on the back side of the joint portion 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b. The insertion part 7 for allowing the vine 25 to be inserted and removed freely is provided.

  A fourth aspect of the present invention provides the dustproof hood according to any one of the first to third aspects, wherein the insertion portion 7 has one end portion 8a sewn to the back side of the upper belt-like cloth portion 4a and the other end portion 8b lowered. It is formed between the rectangular cloth piece 8 sewn on the back side of the side belt-like cloth part 4b and the joint part 5 between the two belt-like cloth parts 4a and 4b.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments to be described later. The dust-proof hood of the invention according to claim 1 includes an upper belt-like cloth portion 4a and a lower side of the belt-like cloth member 4. Since the elastic band 6 for adhesion that pulls backward so that the belt-like cloth part 4b is in close contact with the face of the wearer 20 is provided, the elastic band 6 for adhesion is attached to a required position on the rear side of the head 21. By adjusting the expansion and contraction, the upper belt-like cloth part 4a and the lower belt-like cloth part 4b can be brought into close contact with the face of the wearer 20 according to the different shapes and shapes of the hood wearer 20, and accordingly. The dust attached to the wearer 20 and the hair of the wearer 20 can be reliably prevented from scattering from the face opening 3 of the hood main body 2, and can be used in a factory for manufacturing pharmaceuticals and foods, a clean room for manufacturing semiconductors, and the like. It is suitable for.

  According to the second aspect of the present invention, the close-contacting elastic band 6 is positioned along the substantially bisector 9 of the intersection angle θ in the vicinity of the joint 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b. Since the end portion 6a of the elastic band 6 is sewn to the joint 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b in the disposed state, the upper belt-like cloth portion 4a and the lower belt-like cloth portion are sewn. Adjustment of the tensile force with respect to each of 4b can be performed effectively and easily.

  According to the invention which concerns on Claim 3, in order to insert the vine 25 of the spectacles 24 which the wearer 20 puts in the back surface side of the junction part 5 of the upper side belt-like cloth part 4a and the lower side belt-like cloth part 4b so that insertion or removal is possible. Therefore, when the wearer 20 puts on the spectacles 24, the ear pad 25a of the vine 25 can be put on the ear 26 by inserting the vine 25 of the spectacles 24 into the insertion part 7. . The insertion part 7 is on the back side of the joint part 5 of the belt-like cloth parts 4a and 4b, and the vine 25 of the glasses 24 inserted into the insertion part 7 is pressed against the face together with the joint part 5 by the contact elastic band 6. Therefore, no gap is generated in the insertion portion 7.

  According to the invention which concerns on Claim 4, the insertion part 7 sewed one end part 8a to the back surface side of the upper strip | belt-shaped cloth part 4a, and sewn the other end part 8b to the back surface side of the lower strip | belt-shaped cloth part 4b. Since it is formed between the rectangular cloth piece 8 and the joint part 5 between the two belt-like cloth parts 4a and 4b, the rectangular cloth piece 8 becomes a cushion when the vine 25 of the spectacles 24 is passed through the insertion part 7, and the spectacles There is no unpleasant feeling of pressure caused by 24 vines 25.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a dustproof hood 1 according to the present invention, and FIG. 2 (a) is an enlarged side view of a portion indicated by an arrow A in FIG. (B) is a drawing of the part shown in (a) as seen from the back side. FIG. 3 is a front view showing the use state of the dustproof hood 1, FIG. 4 is a side view of the use state, and FIG. 5 is a perspective view of the use state as viewed from the rear obliquely. The dust-proof hood 1 has a hood body 2 formed so as to cover the head 21, neck 22 and shoulder 23 of the wearer 20. The hood main body 2 is formed by stitching a plurality of flexible breathable / breathable sheet materials, and includes a head covering 2 a that covers the head 21 of the wearer 20, and the head covering 2 a. A neck shoulder covering portion 2b that extends downward in a divergent shape and covers the neck portion 22 and shoulder portion 23 of the wearer 20, and the head covering portion 2a includes both eyes, nose, and nose of the face of the wearer 20 A face opening 3 for exposing the mouth is formed, and a stretchable belt-like cloth member 4 is provided around the periphery of the face opening 3.

  As can be seen from FIG. 1, the neck shoulder cover 2b of the hood main body 2 is formed in a flared skirt shape, and the lower end of the flared skirt neck shoulder cover 2b is a head into which the head 21 of the wearer 20 is inserted. A part insertion opening 10 is formed.

  As shown in FIG. 1, the elastic belt-like cloth member 4 extends substantially linearly in the lateral direction along the upper peripheral edge 3 a of the face opening 3 and covers the eyebrows of the forehead of the wearer 20. The upper belt-like cloth portion 4a and the lower belt-like portion extending along the lower peripheral edge portion 3b of the face opening 3 and arranged so as to follow the lower surface of the chin from both sides of the face of the wearer 20 It consists of cloth part 4b, both ends of U-shaped lower belt-like cloth part 4b are joined to both ends of upper belt-like cloth part 4a, respectively, and both joint parts 5 and 5 of these belt-like cloth parts 4a and 4b are joined. 2 to 5, the belt-like cloth member 4 is hung from the outer side of the head covering part 2 a which is a part of the hood main body 2 to a required position on the rear side of the head 21 of the wearer 20. The both ends 6a, 6a of the elastic band 6 for adhesion for pulling backward so as to adhere to the face of the wearer 20 are sewn (that Shown by the t gastric eyes in Figure 2).

  Each of the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b of the elastic belt-like cloth member 4 has elasticity and elasticity, and is formed by knitting a nylon yarn or a polyester yarn and a polyurethane elastic yarn. . Preferably, 100% polyester yarn having excellent water absorption and quick drying properties is used, but is not limited to this, and any material that does not irritate the skin and does not cause discomfort may be used. The upper edge portion 3a and the lower edge portion 3b of the face opening 3 are sewn in an unextended state, and as can be seen from FIGS. 2 (a) and 2 (b), the end portions of the upper belt-like cloth portion 4a. The end portion of the lower belt-like cloth portion 4b is overlapped on the front side and stitched (the seam is indicated by t), thereby forming the joint portion 5 between the two belt-like cloth portions 4a and 4b.

  The elastic band 6 for close contact has a larger elasticity than the upper belt-like cloth part 4a and the lower belt-like cloth part 4b of the elastic belt-like cloth member 4, and is formed by a rubber thread as a core in a flat string. Has been. Of course, the present invention is not limited to this, and any material that does not irritate the skin and does not cause discomfort may be used. As shown in FIGS. 2 (a) and 2 (b), the ends of the elastic band 6 are sewn to the front side of the joint portion 5 of the belt-like cloth portions 4a and 4b. FIG. 2A is a view of the joint portion 5 of the two belt-like cloth portions 4a and 4b as viewed from the front side, and FIG. 2B is a view of the joint portion 5 as viewed from the back side.

  Further, as shown in FIG. 2A, the contact elastic band 6 is along a substantially bisector 9 of the intersection angle θ in the vicinity of the joint 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b. The end 6a of the elastic band 6 is sewn to the joint 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b in the state of being disposed at the position. By arranging the elastic band 6 along the substantially bisector 9 of the intersection angle θ in this manner, the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b can be easily pulled when the dustproof hood 1 is used. This can be done accurately and accurately, but this will be described later. Note that the intersection angle θ is, for example, 75 °.

  As shown in FIGS. 3 to 5, a vine 25 of glasses 24 worn by the wearer 20 is provided on the back side of the joint 5 between the upper belt-like cloth portion 4 a and the lower belt-like cloth portion 4 b of the stretchable belt-like cloth member 4. An insertion portion 7 is provided for allowing the insertion of the insertion and removal. As can be seen by referring to FIGS. 2 (a) and (b), the insertion portion 7 has one end portion 8a in the vicinity of the joint portion 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b. Between the rectangular cloth piece 8 sewn on the back side of the part 4a and the other end 1b sewn on the back side of the lower belt-like cloth part 4b, and the joint part 5 between the belt-like cloth parts 4a and 4b. It is formed. A seam of a sewn portion of both end portions 8a and 8b of the rectangular cloth piece 8 is indicated by t. The rectangular cloth piece 8 is made of the same material as the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b of the stretchable belt-like cloth member 4.

  A woven fabric or a knitted fabric can be used for the breathable moisture-permeable sheet material forming the hood main body 2. Weaving fabrics include plain fabrics such as lawn, desin, georgette, taffeta, broad, gingham, muslin, feather double and chirimen, twill, surge, cashmere, gabardine and other satin fabrics, satin, dosskin and other satin fabrics. Can be used. As the knitting, weft knitting such as flat knitting, rib knitting and pearl knitting, and warp knitting such as tricot, russell and mirrors can be used. It is preferable that the gap between the fibers forming the woven fabric or the knitted fabric is small and the eyes are fine so that the dust attached to the wearer or the hair of the wearer does not come out of the hood 1. .

  A method for mounting the dustproof hood 1 configured as described above will be described with reference to FIGS. 3 to 7. First, the wearer 20 opens the head insertion opening 10 at the lower end of the neck shoulder cover 2 b. After expanding and inserting the head 21 through the insertion port 10 into the hood main body 2, the neck shoulder cover 2 b is pulled down to cover the head cover 2 a on the head 21, and the contact elastic band 6 is attached to the head. The upper belt-like cloth part 4a and the lower belt-like cloth part 4b of the belt-like cloth member 4 are brought into close contact with the face-required part in a state where the belt-like cloth member 4 is appropriately pulled. That is, the upper belt-like cloth portion 4a is located on the upper side of both eyes so as to be in close contact with the forehead (forehead) portion at a position covering the eyebrows, and the lower belt-like cloth portion 4b is shown in FIGS. As described above, the center portion 4bo side is hung on the chin of the wearer 20, so that both sides of the face are in close contact with the lower half of the face along the lower surface of the chin.

  In the mounting examples shown in FIGS. 3 to 5, as can be seen from FIG. 4, the contact elastic band 6 is arranged on the rear side of the head 21 so as to be substantially collinear with the upper belt-like cloth portion 4 a of the belt-like cloth member 4. The upper belt-like cloth part 4a is pulled on the upper belt-like cloth part 4a. This is because the height of the forehead (forehead) part of the wearer 20 is lower than usual, so that the upper belt-like cloth part abuts on the forehead part. While it is necessary to pull the back side of the head 21 relatively strongly so that the 4a is in close contact with the face along the forehead part, the face of the wearer 20 is round and fluffy, and the upper belt-like cloth part This is because 4a can be brought into close contact with the face if pulled lightly.

  That is, as shown in FIG. 4 and FIG. 5, when the elastic band 6 for close contact is hooked on the rear side of the head 21 so as to be substantially collinear with the upper belt-like cloth portion 4 a of the belt-like cloth member 4. On the other hand, the upper belt-like cloth portion 4a is strongly pulled, while the lower belt-like cloth portion 4b which is in a state of intersecting the adhesion elastic band 6 at a substantially right angle has a slight tensile force of the adhesion elastic band 6. Thus, the entire belt-like cloth member 4, that is, the upper belt-like cloth portion 4 a and the lower belt-like cloth portion 4 b can be brought into close contact with the face accurately and without gaps.

  Further, when the elastic band 6 for close contact is hooked on the rear upper side of the head 21 so as to be substantially the same straight line as the lower belt-like cloth portion 4b of the belt-like cloth member 4, as shown in FIG. On the other hand, the lower belt-like cloth portion 4b is strongly pulled, while the tensile force of the close-contacting elastic band 6 is only slightly applied to the upper belt-like cloth portion 4a that is in a state of intersecting the adhesive elastic band 6 at a substantially right angle. . Therefore, for example, because the height of the forehead portion of the wearer 20 is higher than that of a normal person, the upper belt-like cloth portion 4a may be pulled lightly. However, for example, the face is relatively thin and the face is thin, When it is necessary to pull the lower belt-like cloth portion 4b tightly along the face portion without gaps, the contact elastic band 6 is substantially the same as the lower belt-like cloth portion 4b as shown in FIG. It suffices to hang on the rear upper side of the head 21 so as to be in a straight line, and by doing so, the upper belt-like cloth part 4a and the lower belt-like cloth part 4b can be accurately adhered to the face without a gap.

  Further, when the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b of the belt-like cloth member 4 have only to be pulled substantially evenly, as shown in FIG. The close-contacting elastic band 6 may be hooked on the rear side of the head 21 so as to be positioned along a substantially bisector of the intersection angle in the vicinity of the joint 5 between the 4a and the lower belt-like cloth portion 4b. When the elastic band 6 for adhesion is positioned so as to be along the substantially bisector of the upper belt-like cloth part 4a and the lower belt-like cloth part 4b as in the case of the above, the tensile force of the elastic band 6 for adhesion is upper belt-like. By acting substantially equally on the cloth part 4a and the lower belt-like cloth part 4b, both the belt-like cloth parts 4a and 4b can be brought into close contact with the face accurately without any gaps.

  Further, as described with reference to FIG. 2, the contact elastic band 6 is positioned along the substantially bisector 9 of the intersection angle θ in the vicinity of the joint portion 5 between the upper belt-like cloth portion 4 a and the lower belt-like cloth portion 4 b. Since the end 6a of the elastic band 6 is sewn to the joint 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b, the upper belt-like cloth portion 4a and the lower belt-like cloth It is possible to effectively and easily adjust the tensile force for each of the cloth portions 4b. Incidentally, in a state where the contact elastic band 6 is positioned in the same straight line as the upper belt-like cloth part 4a, for example, the end part 6a of the elastic band 6 is connected to the joint part 5 between the upper belt-like cloth part 4a and the lower belt-like cloth part 4b. If it is sewn, there is no problem when the elastic band 6 is pulled in the same straight line as the upper belt-like cloth part 4a, but even if the elastic band 6 is pulled in the same straight line as the lower belt-like cloth part 4b. It becomes difficult to apply a tensile force to the lower belt-like cloth portion 4b.

  As described above, when the dust-proof hood 1 is used, the upper belt-like cloth of the elastic belt-like cloth member 4 is used in accordance with the face of the hood wearer 20 in various shapes and forms and also when the face is moved. The portion 4a and the lower belt-like cloth portion 4b can be accurately brought into close contact with the face of the wearer 20, and no gap is generated between the face and the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b. Therefore, the dust attached to the wearer 20 and the hair of the wearer 20 can be reliably prevented from scattering from the face opening 3 of the hood main body 2 and used in a factory for manufacturing pharmaceuticals and foods, a clean room for manufacturing semiconductors, etc. It is suitable for doing.

  And since the hood main body 2 is formed of a breathable and moisture-permeable sheet material, moisture in the hood main body 2 can be released to the outside at the time of wearing, and even if the hood 1 is worn for a long time, the inside of the hood main body 2 is steamed. There is no such thing.

  Further, in the dust hood 1, the vine 25 of the spectacles 24 worn by the wearer 20 is detachably inserted into the back side of the joint portion 5 between the upper belt-like cloth portion 4a and the lower belt-like cloth portion 4b. Since the insertion portion 7 is provided, when the wearer 20 puts on the glasses 24, the ear pad 25 a can be put on the ear 26 by inserting the vine 25 of the glasses 24 into the insertion portion 7. Further, the insertion part 7 is provided on the back side of the joint part 5 of the belt-like cloth parts 4a and 4b, and the vine 25 of the spectacles 24 inserted into the insertion part 7 is put on the face together with the joint part 5 by the contact elastic band 6. Since it is pressed, there is no gap between the insertion portion 7 and the vine 25 of the glasses 24.

  The insertion portion 7 includes a rectangular cloth piece 8 having one end portion 8a sewn on the back side of the upper belt-like cloth portion 4a and the other end portion 8b sewn on the back side of the lower belt-like cloth portion 4b; Since it is formed between the belt-like cloth parts 4 a and 4 b and the joint part 5, when the vine 25 of the spectacles 24 is passed through the insertion part 7, the rectangular cloth piece 8 becomes a cushion, which is uncomfortable due to the vine 25 of the spectacles 24. There is no feeling of pressure.

  In addition, the dust-proof hood 1 is prepared in three types, for example, L size (large), M size (medium), and S size (small), depending on the size of the head 21 of the wearer 20. For each size, the close-up elastic band 6 makes it possible to adjust the close contact between the upper belt-like cloth part 4a and the lower belt-like cloth part 4b with respect to the face.

  In the embodiment described above, the face opening 3 of the hood main body 2 is formed so that both eyes, nose and mouth of the face of the wearer 20 are exposed, but may be formed so that only both eyes are exposed. Alternatively, it may be formed so that both eyes and the nose are exposed.

It is a front view of the hood for dust protection concerning the present invention. (a) is an enlarged side view of the portion indicated by arrow A in FIG. 1, and (b) is a drawing of the portion shown in (a) as seen from the back side. It is a front view which shows the use condition of the same hood for dust prevention. It is a side view of the use state. It is the perspective view which looked at the same use state from back diagonally. It is a side view which shows the other use condition of the hood for the dustproof. It is a side view which shows the further another use condition of the same hood for dust prevention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust-proof hood 2 Crop body 2a Head cover part 2b Neck shoulder cover part 3 Face opening part 4 Elastic belt-like cloth member 4a Upper belt-like cloth part 4b Lower belt-like cloth part 5 Bonding part 6 Elastic band 6a Extending band end 7 Insertion section 8 Rectangular cloth piece 10 Head insertion slot 20 Wearer 21 Head 22 Neck 23 Shoulder 24 Glasses 25 Glasses vine

Claims (4)

It has a hood body formed so as to cover at least the head and neck of the wearer's head, neck and shoulders by the breathable and moisture permeable sheet material. A face opening for exposing at least both eyes of the face is formed, and a dustproof hood that is provided with a stretchable belt-like cloth member around the periphery of the opening.
The stretchable belt-like cloth member includes an upper belt-like cloth portion extending substantially linearly along the upper peripheral edge of the face opening, and a lower belt-like cloth extending substantially U-shaped along the lower peripheral edge of the face opening. And both ends of the lower belt-like cloth part are joined to both ends of the upper belt-like cloth part, and both the joint parts of these belt-like cloth parts are connected to the rear side of the wearer's head from the outside of the hood body. A dust-proof hood, characterized in that both ends of an elastic band for contact are attached so as to be hooked at a required position and pulled backward so that the belt-like cloth part is in close contact with the face of the wearer.   The contact elastic band is disposed at a position along the substantially bisector of the intersection angle in the vicinity of the joint between the upper belt-like cloth part and the lower belt-like cloth part, and the end of the elastic band is the upper belt-like shape. 2. The dustproof hood according to claim 1, wherein the hood is attached to a joint portion between the cloth portion and the lower belt-like cloth portion.   The insertion portion for allowing the wearer of the spectacles worn by the wearer to removably pass is provided on the back side of the joint portion between the upper belt-like cloth portion and the lower belt-like cloth portion. Item 3. A dustproof hood according to item 1 or 2. The insertion portion includes a rectangular cloth piece having one end portion sewn to the back side of the upper belt-like cloth portion and the other end portion sewn to the back surface side of the lower belt-like cloth portion, and a joint portion between the two belt-like cloth portions. The hood for dustproof according to any one of claims 1 to 3, wherein the hood is formed in between.

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