JP2000220013A - Work clothes both as life clothes and heat insulating clothes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain work clothes both as lifesaving and heat insulating clothes, having light weight, excellent in feeling of wearing, workability and safety, useful for offshore operation or the like by comprising sheets enclosing a buoyancy material and adhering its peripheral region with the sheet the face and the back with consistency. SOLUTION: The wear comprises the buoyancy material 20 having air- permeable voids, an interior material 30 comprising waterproof and air permeable film 31 enclosing the buoyancy material 20, an exterior material 40 installed on the outside of the interior material 30 having air-permeability, comprising hollow fibers or the like having air thermally welded in inside, at least the interior material 30 comprises sheets 10, 11 enclosing the buoyancy material 20 and adhering its peripheral region with the sheets the face and the back with consistency. The interior material 30 is thermally welded the face and the back with consistency to form independent sections in desired shape having 1-100 cm2 of area, enclosing the buoyancy materials 20 to each section, and the sheets 10, 11 are preferably installed on flexible parts such as sides and elbows or knees or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to work wear used in offshore work and the like, and more particularly to work wear for lifesaving and dual use which can be optimally used by offshore workers in cold regions.

[0002]

2. Description of the Related Art Workers on board a fishing boat, icebreaker, or other workboat operating in the sea or lake in cold regions are required to prepare for extremely cold accidents in case of a waterfall accident or a capsizing accident. They wear insulated and life-saving garments and workwear for cold weather so that they do not freeze immediately after falling into the water.

[0003] However, in the case of such life-saving garments and winter clothing, a buoyant body such as cotton or styrofoam is packed between multi-layered cloths in order to maintain a sufficient heat retaining property, being lighter than water. The surface was film-laminated or coated with a rubber-like material so that water did not penetrate into the garment, and the structure was such that the air permeability of the garment was sacrificed. For this reason, when such wear is worn, it immediately sweats and gets stuffy.

[0004] Further, in other life vests and work clothes for cold weather, for example, in the form of a waistcoat, a fixed or inflatable life-saving buoyant body is made of foam in order to prepare for an accident under water. On the other hand, in the inflatable type, a buoyancy is obtained by inflating a life-saving airbag instantaneously with carbon dioxide gas or the like by using plastic or cork. Such a life vest is disclosed, for example, in JP-A-59-1000.
No. 85, JP-A-60-116587, JP-A-4-27
No. 4989 has been proposed.

[0005] However, this work wear for life vests or for cold weather swells the buoyant body and the airbag portion and lacks air permeability and flexibility. In order to ensure waterproofness and heat insulation, it is unavoidable to sacrifice "humidity" and "movability", and it is difficult to say that comfort and workability are good. However, they did not satisfy all of the conditions of heat insulation, heat retention, light weight, flexibility, stuffiness, and sufficient buoyancy.

[0006] For example, if the workwear for life vests and winter clothing is made of a breathable cloth in order to release moisture and prevent stuffiness, it absorbs water from the cloth at the time of falling water to provide buoyancy and heat insulation. Insulation and buoyancy are reduced, and if the life vest is thinned to make it easier for heat to escape, the heat insulation and buoyancy are reduced, and the safety is lacking, leading to the solution of the above-mentioned problem. There was nothing.

[0007]

In such a conventional life-saving garment or cold weather workwear, when worn, heat from the body is less likely to be released, sweating and sweating, impairing wearing comfort, and saving life. Because the buoyancy body expands and the workability is impaired, the worker may take off the wear while knowing that it is dangerous,
The work may be performed with the chuck opened, and work safety is regarded as a problem.

For this reason, the worker has a breathability even in ordinary work and can work without getting stuffy, and also has cold protection and buoyancy even in the event of falling into extremely cold water, thus ensuring safety. It has been a longing for a workwear for life protection and cold protection.

On the other hand, with the development of spinning technology, hollow fibers have been developed and used as a material having excellent heat insulating properties by using air of a fiber having a tube structure as a material having good heat insulation and the like. One person (Miki Nakanishi) has proposed a method in which both ends of this fiber are heat-sealed and the inside air is sealed to be used as a cushioning material for shoes or the like (Japanese Patent Laid-Open No. 6-184899).
issue). In addition, a waterproof breathable film that does not allow liquids such as water to pass therethrough but allows moisture and air to pass through has been developed, and is used as a material for breathable wear and the like in sportswear and the like. However, as a material having functions such as buoyancy and air permeability, a material focusing on these combinations has not yet been developed.

[0010]

In order to achieve the above object, the present invention provides, as a first aspect, a buoyant body having a permeable space formed therein and a waterproof permeable film enclosing the buoyant body. And an exterior body having air permeability provided outside the interior body, and at least the interior body is integrally bonded front and back in an outer peripheral area of the buoyancy body to encapsulate the buoyancy body. An object of the present invention is to provide work wear for life protection and cold protection which is made of a sheet.

According to another aspect of the present invention, there is provided a buoyant body comprising a hollow filler in which air is sealed, and an interior comprising a waterproof and breathable film enclosing the buoyant body. A life-saving body comprising a body, a gas-permeable exterior body provided outside the interior body, and a sheet in which at least the interior body is integrally bonded front and back at the outer peripheral area of the buoyancy body and encloses the buoyancy body. The purpose of the present invention is to provide work wear for cold weather.

According to a third aspect of the present invention, there is provided a buoyant body made of a hollow fiber which is heat-welded to seal air therein, and provided outside the interior body. An air-permeable exterior body, wherein at least the interior body is integrally bonded front and back in an outer peripheral area of the buoyancy body to provide a life-saving / warm-up workwear made of a sheet enclosing the buoyancy body. It is.

According to a fourth aspect of the present invention, in order to achieve the above object, the outer body is formed as a hollow fiber in which air is sealed by heat welding. The present invention provides a work wear for life protection and cold protection.

According to a fifth aspect of the present invention, in order to achieve the above object, the outer body is formed of a wear-resistant cloth. It provides work wear.

According to a sixth aspect of the present invention, in order to achieve the above object, the interior body is 1 to 100 cm ^2.
The lifesaving device according to any one of claims 1, 2, 3, 4, and 5, characterized in that the surfaces are integrally welded to each other so as to form independent sections in a desired shape within the range, and the buoyant body is sealed in each section. The purpose of the present invention is to provide work wear for cold weather.

According to a seventh aspect of the present invention, in order to achieve the above object, the seat is provided at a bending portion such as a side, an elbow or a knee. It is intended to provide the work wear for life protection and cold protection described in 4, 5, 5, and 6.

Thus, in the present invention, a buoyant body is used by using a hollow fiber or a hollow filler or the like, in which air is sealed, as a buoyant body, and further encapsulating the buoyant body with a waterproof breathable film as an interior body. To prevent water from entering the gaps of fibers or fillers, and also use the buoyancy of the buoyant body itself and the space in the gap as buoyancy, and also through this space to the outside due to moisture from sweat and heat generated from the body. Can be released moderately. At the same time, by providing the exterior body having air permeability on the surface of the interior body, it is possible to prevent the extremely thin breathable film from being broken due to rubbing or the like. In this way, wearing comfort is not impaired by stuffiness, it can be made thin by maximizing the buoyancy of the buoyant body, it does not impair workability, and it also has light weight, heat insulation, heat insulation, etc. An object of the present invention is to provide a work wear for life protection and cold protection which is also provided.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The work wear for lifesaving and cold protection according to the present invention will be described below with reference to the embodiment shown in FIGS. First, a description will be given of the buoyancy body 20 having a space having air permeability used in the work wear 1 for lifesaving / cold protection work. When the buoyant body 20 is sealed with the waterproof breathable film 31 as the interior body 30, a space through which the breathable body 20 can be ventilated is secured, and the flexibility of the waterproof breathable film 31 is not impaired. A material having a lower bulk specific gravity can be used. For example, a sponge having open cells, a granular styrofoam, a lightweight filler, a coarse cloth, or the like can be used.

Among them, it is particularly preferable to use a fiber (hollow fiber) 22 or a filler (hollow filler) 21 having a hollow structure inside in terms of lightness, heat retention, heat insulation, and buoyancy. These hollow fibers 22 and hollow fillers 21 are hollow inside and have air therein, so that their bulk specific gravity is light,
Extremely large buoyancy can be obtained by sealing the air. And, for example, if a fiber or filler that seals the air is used, even if one part is torn, and even if air leaks from that part, the air in the other part is retained, so these are used as buoyant bodies. When the water is used, the heat retention of the whole buoyancy body is not impaired, and when water invades at the time of falling, the whole buoyancy is not lost.

As such a hollow fiber 22, for example, an ultra-high hollow fiber made of polyester and having a hollow ratio of 35 to 40% and a specific gravity of about 0.8 (for example, Aerocapsule, registered trademark, manufactured by Teijin Limited) is used. I can give it. When the hollow fibers 22 are used, the fibers need to be bundled or knitted to form a cloth, and at least the outer peripheral area needs to be heat-welded, since both ends of the fibers are welded and the air inside is sealed. In addition, the heat insulation and buoyancy of the fiber can be improved.
In addition, when the partition streaks are formed by partially adhering not only in the outer peripheral area of the cloth but also on the inner side thereof, the internal space of the fiber is divided, and even if the buoyancy and the heat insulating property are slightly reduced, the fiber is partially removed. The air leakage when the rupture is broken can be reduced, and a decrease in buoyancy of the entire buoyant body can be suppressed. In sealing the air inside the hollow fiber 22, when the buoyant body 20 is sealed in the interior body 30 by heat welding, the fiber can be sealed simultaneously with the welding, so that the air of the fiber is sealed in advance. You don't have to. In the case where the buoyant body 10 is bonded by an adhesive, a woven fabric is formed by first heat-welding the two ends of the hollow fiber and then the outer peripheral region is heat-sealed after the hollow fiber is woven. Shall be stopped.

As the hollow filler 21, for example,
Ultra-light plastic microspheres (eg EX
PANEL * DE, a registered trademark, manufactured by Nippon Philite Company). This hollow filler 21
Made of polyester or epoxy resin, particle size range is 10
５００500 μm, bulk specific gravity of 0.02 or less, and extremely light weight.

The buoyant body 20 has a space formed in a mesh of fibers, a gap between fillers, or a portion of open cells, so that moisture and air can be ventilated. Incidentally, as long as the buoyancy of the buoyant body does not impair the buoyancy and heat insulation, a flexible resin frame or the like may be provided, as desired, so that the space through which the buoyant body receives pressure from the outside does not collapse. A buoyancy body can be interposed as a space securing member (not shown).

Next, the interior body 30 will be described. As the inner body 30, a waterproof and breathable film 31 that is impermeable to moisture and impermeable to moisture and air is used. Examples of the waterproof and breathable film 31 include a moisture-permeable film (for example, Flecron, registered trademark, manufactured by Nippon Synthetic Chemical Co., Ltd.). The film mentioned in this example is a non-porous membrane film formed of a polyester-based thermoplastic elastomer resin by a T-die extrusion method, which is completely waterproof and has excellent water vapor passing performance. With extremely high air permeability and excellent water resistance, heat resistance and cold resistance (-70 ° C
-140 ° C) and has heat sealability. Also,
The film has a thickness of about 10 to 200 μm, has a hardness of 80 Å, and has a specific gravity of 1.08, which is close to the specific gravity of water. Has no effect.

The buoyant body 20 is covered with the waterproof and breathable films 31 and 31 as the inner body 30, and at least the outer peripheral area 50 of the waterproof and breathable films 31 and 31 is adhered and sealed to form a bag. By forming, the buoyant body 20
And prevent water from entering the space, and ventilate and waterproof. For the encapsulation, the buoyant body 20 may be encapsulated by using a known bonding method such as heat welding, an adhesive, or a high-frequency welder as appropriate. What is necessary is just to be able to adhere so as not to enter so as not to enter. The inner body 30 does not need to be bonded to the buoyant body 20, and may be bonded to the buoyant body 20 as long as the air permeability is not impaired.

In forming the bag, although not shown, for example, only one side of the outer peripheral area of the waterproof breathable film is not bonded in advance, a buoyant body is put into the bag from this side, and the side is later attached. A bag can be formed by sealing. Alternatively, a bag body can be formed by sandwiching a buoyant body between the waterproof and breathable films on the front and back sides and bonding the outer peripheral region with a high-frequency welder or the like. In addition, the waterproof breathable film 31,
When heat-welding the 31s to each other, the waterproof gas-permeable film 31 itself may be melted and adhered, or a material having a lower melting point than a waterproof gas-permeable film such as hot melt may be interposed and then melted and adhered. In this case, a non-woven hot melt should be interposed between the films, or the hot melt resin should be adhered only to the welded portion so as not to impair the air permeability of the waterproof breathable films 31, 31. There is. When a hot melt is used, it is softened at a relatively low temperature and has adhesiveness, and thus is suitable for a buoyant body or an interior body that is easily discolored or deteriorated by heat or deteriorates.

Next, the exterior body 40 will be described. The exterior body 40 may be provided on the outer surface of the interior body 30 to protect the interior body 30 from damage such as abrasion without impairing the air permeability and flexibility of the buoyant body 20 and the interior body 30. For example, a cloth such as a synthetic fiber can be used. Above all, if the outer body 40 is made of a woven cloth of high-strength and high-elasticity fiber (for example, Dyneema, registered trademark, manufactured by Toyobo Co., Ltd.) as the wear-resistant cloth 42, damage due to abrasion can be prevented. The dyneema given in this example is made of polyethylene and has extremely high tensile strength and elastic modulus, and is a fiber excellent in abrasion resistance. Therefore, if this is used as the woven fabric for the exterior body 40, the interior body 30 can be used. It is possible to protect the buoyancy body 20 and the interior body 30 from air permeability and flexibility while protecting the buoyancy body 20 and the interior body 30 from being further protected from abrasion.

As another preferable material, the hollow fiber used for the buoyant body can be used as the woven fabric for the exterior body 40. In this case, water enters the stitches of the cloth of the hollow fibers 41 serving as the exterior body 40 at the time of landing, but the buoyancy can be increased even slightly in the exterior body 40 and the buoyant body 20 or The air permeability and flexibility of the inner body 30 are not impaired.

When the outer body 40 is provided on the surface of the inner body 30, the outer body 40 may be appropriately adhered to the inner body 30 by a known heat welding, an adhesive or the like as in the case of welding the inner body 30. The bonding portion 51 and the outer peripheral region 50 of the inner body 30
May be sewn at a portion where water does not enter the space of the buoyant body 20, such as an end side of the buoyant body 20. The point is that the inner body 30 only needs to be protected, so that it does not come off and adhere to the inner body 30. What is necessary is just to be formed. For example, when providing the exterior body 40, the exterior body 40 may be provided after forming a bag body with the interior body 30, or the interior body 30 and the exterior body 40 may be provided.
And a bag may be formed by heat welding. If a nonwoven fabric or the like having air permeability and flexibility is previously formed on one surface of the waterproof breathable film 31, which is the interior body 30, it can be used as the exterior body 40 as it is.

In preparing the sheet 10 composed of the buoyant body 20, the inner body 30 and the outer body 40, the inner body 30 and the outer body 40 are cut into a predetermined shape in advance. The sheet 10 may be formed one by one from the above, or the sheet 10 may be formed by first bonding the outer peripheral region 50 using the inner body 30 or the outer body 40 having a large area, Further, a plurality of sheets 11 may be formed at a time by cutting into a desired shape by the partition streaks 52.

In the interior body 30, the partition streaks 52 are formed on the sheet 10 so that the size of one partition is in a desired shape in the range of 1 to 100 cm ² , so that the partition streaks 52 are formed. It is preferable to form the folded sheet 10 that is easily bent. If the size of the section is too large,
The number of bent portions is reduced, making it difficult for the wear 1 to move, which is not preferable in terms of workability. In addition, depending on the material of the buoyant body 20, unevenness is caused, so that air permeability and heat insulation are uneven. On the other hand, if it is smaller than this, the buoyancy of the sheet 10 will be reduced, causing a problem in safety.

Then, the sheets 10 formed into the shape of each part of the garment 1 from these sheets may be joined by sewing or the like to form the garment 1, or necessary portions of commercially available garment may be cut out in advance. Then, the sheet 10 may be formed according to the shape of the hollow portion, and attached by sewing or the like. In particular, by providing the sheet 10 at a bent portion such as a side, an elbow, a knee, or the like, a buttocks, or the like, the sheet 10 is pressed or bent by an appropriate force to promote the circulation of air in the space of the buoyant body 20. You can work comfortably.

The exterior body 40 located on the surface may be subjected to a water-repellent treatment such as fluorine or silicon coating to prevent moisture from penetrating, or may be made of a synthetic resin cloth having a high water-repellent effect. it can. The sheet 10
May be coated with a rubber resin or the like so as to prevent water from entering the inside or to prevent stress from being concentrated on the through-holes of the thread and breaking.

An example of a procedure for preparing the work clothing for lifesaving and cold protection according to the present invention will be described. First, EXPANCEL ・ D sold by Nippon Ferrite Co., Ltd.
A hollow filler having a particle diameter of 200 μm of E was prepared, and two pieces of Flecron (M type # 25) (registered trademark) manufactured by Nippon Synthetic Chemical Co., Ltd. cut into 7 × 7 cm ² as an interior material, and Teijin Limited as an exterior body 2 pieces of cloth cut into 7 × 7 cm ² were prepared. Also, three hot-melt nonwoven fabrics (basis weight 80 g / m ² ) having the same dimensions were prepared. Then, the inner body and the outer body are overlapped, and a hot-melt nonwoven fabric is interposed therebetween, and then the three-sided area of the overlapped sheet is melted with a high-frequency welder from an edge to 1 cm from an edge. Was. The welding conditions were as follows: press pressure: 100 kg
/ M ² , anode 0.9A, welding time 20 seconds, cooling time 10
Seconds. Then, a hollow filler was filled from one side not welded to make the bulge of the sheet 8 mm, and the side was welded to form a 5 × 5 cm, 8 mm thick sheet (weight 4 g, specific gravity 0.16). A plurality of these sheets were prepared, and the sheets were sewn onto commercially available work clothes for winterization (2.5 kg in total in outerwear and trousers) which were appropriately cut out, and the sheets were worn. Even after working for a long time, it became difficult to get stuffy, and the sheet part became thin and light,
Comfort and workability have been improved.

[0034]

According to the present invention, a hollow fiber or a hollow filler having air sealed therein is used as a buoyant body, and this is sealed with a waterproof breathable film as an interior body, so that not only the buoyant body but also the buoyant body is used. The space formed in the buoyant body could also be used as buoyancy. At the same time, by providing an exterior body having air permeability on the surface of the interior body, it is possible to prevent the extremely thin air-permeable film from being broken due to rubbing or the like, and to obtain a comfortable work wear for lifesaving and cold weather. I was able to. In addition, since the buoyant body is light and can exert buoyancy to the maximum, the seat can be configured to be thin and workability is good when wearing workwear.
In addition, since the sheet is provided at the bent portion of the work wear, ventilation of the space of the buoyant body is promoted, and a more comfortable work wear for lifesaving and cold weather work can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an embodiment of work wear for lifesaving and cold protection according to the present invention.

FIG. 2 is a partially enlarged cross-sectional schematic view schematically showing a sheet used for work wear for lifesaving and cold protection according to the present invention.

FIG. 3 is a partially enlarged schematic cross-sectional view schematically showing another embodiment of the seat used for the life wear / cold protection workwear according to the present invention.

FIG. 4 is a partially enlarged schematic cross-sectional view schematically showing still another embodiment of the seat used in the life wear / cold protection workwear according to the present invention.

FIG. 5 is a front view of one embodiment of a seat used for life wear and cold weather work wear according to the present invention.

FIG. 6 is a schematic front view of another embodiment of the work wear for lifesaving / cold protection according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Working wear for life-saving and cold protection work; 10, 11 ... Sheet; 20 ... Buoyant body; 21 ... Hollow filler; 22 ... Hollow fiber; 30 ... Interior body; ··· Waterproof breathable film; 40 ··· exterior body; 42 · · · abrasion-resistant cloth; 50 · · · peripheral area; 51 · · · adhesive part;

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[Procedure amendment]

[Submission date] June 8, 1999 (1999.6.8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

According to a third aspect of the present invention, there is provided a buoyant body made of a hollow fiber which is heat-welded to seal air therein, and a buoyant body in which the buoyant body is sealed.
An inner body made of a water-permeable film and an outer body having air permeability provided outside the inner body, and at least the inner body is integrally bonded front and back in an outer peripheral area of the buoyant body. Another object of the present invention is to provide work wear for life-saving and cold weather which comprises a seat in which a buoyant body is enclosed.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Among them, it is particularly preferable to use a fiber (hollow fiber) 22 or a filler (hollow filler) 21 having a hollow structure inside in terms of lightness, heat retention, heat insulation, and buoyancy. These hollow fibers 22 and hollow fillers 21 are hollow inside and have air therein, so that their bulk specific gravity is light,
Extremely large buoyancy can be obtained by sealing the air. And, for example, if a fiber or filler that seals air is used, even if a part of it is torn, and even if air leaks from that part, the air in other parts is retained , so these are used as buoyant bodies. when using, without that the warmth of the entire buoyant body may be impaired, and it is no overall buoyancy that a rather when water enters when drainage.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

Next, the interior body 30 will be described. As the inner body 30, a waterproof and breathable film 31 that is impermeable to moisture and impermeable to moisture and air is used. Examples of the waterproof and breathable film 31 include a moisture-permeable film (for example, Flecron, registered trademark, manufactured by Nippon Synthetic Chemical Co., Ltd.). The film mentioned in this example is a non-porous membrane film formed of a polyester-based thermoplastic elastomer resin by a T-die extrusion method, which is completely waterproof and has excellent water vapor passing performance. With extremely high air permeability and excellent water resistance, heat resistance and cold resistance (-70 ° C
-140 ° C) and has heat sealability. Also,
The film thickness of about 10 to 200 [mu] m, shea
Since it has an air A hardness of 80 and a specific gravity of 1.08, which is close to the specific gravity of water, when combined with the buoyant body 20 which is lighter than water, the weight and buoyancy are hardly affected.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nakanishi Mikiiku 846-8 Kijima, Fujikawa-cho, Abara-gun, Shizuoka F-term (reference) 3B011 AA02 AC08 AC10 AC13 AC18 3B031 AB01 AB02 AB06 AC01 AE01 AE05 AE07

Claims (7)

[Claims] 1. A buoyant body having a permeable space formed therein; an inner body made of a waterproof breathable film enclosing the buoyant body; and a permeable outer body provided outside the inner body. At least the interior body is attached to the outer surface of the buoyant body in a front-to-back manner and is sealed with the buoyant body. 2. A buoyant body made of a hollow filler in which air is sealed inside; an inner body made of a waterproof and breathable film enclosing the buoyant body; and a permeable exterior provided outside the inner body. At least the interior body is attached to the outer surface of the buoyancy body at the outer periphery thereof, and is attached to the front and back surfaces of the buoyancy body. 3. A buoyancy body made of a hollow fiber which is heat-welded to seal air therein, and a gas-permeable exterior body provided outside the interior body; at least the interior body is the buoyancy body. Workwear for life-saving and cold weather, which consists of a sheet in which the buoyancy body is sealed by being adhered to the front and back of the outer peripheral area. 4. The workwear for lifesaving and cold weather protection as claimed in claim 1, wherein said exterior body is formed as a hollow fiber which is heat-welded to seal air therein. 5. The workwear according to claim 1, 2, 3 or 4, wherein the exterior body is made of abrasion-resistant cloth. 6. The interior body is characterized in that the interior and exterior sides are integrally heat-sealed so as to form independent sections in a desired shape in the range of 1 to 100 cm ² , and the buoyancy body is sealed in each section. The workwear for life protection and cold protection according to claim 1, 2, 3, 4, or 5. 7. The seat according to claim 1, wherein the seat is provided at a bending portion such as a side, an elbow, or a knee.
3. The work wear for lifesaving and cold protection described in 3, 4, 5, and 6.