Exhaust vent for heating equipment

Abstract

To provide an exhaust port for a heat insulating tool capable of surely sealing air, efficiently exhausting air when removing the air, and giving a good use feeling.SOLUTION: An exhaust port for a heat insulating tool comprises a cylindrical cloth 38 at an opening 30 formed in a face cloth 18 or a lining cloth 16 of an air storage space 22a to be filled with air. In the cylindrical cloth 38, a tip portion 38f which is one opening of a cylindrical body composed of the cylindrical cloth is located outside the opening 30, and a base end portion 38e on the opposite side of the tip portion 38f is located in the air storage space 22a inside the opening 30. The cylindrical cloth 38 is crushed flat, is folded a plurality of times along a folding position substantially perpendicular to the insertion direction of the cylindrical body to be rolled, and is stored in the opening 30. The inner surface of the cylindrical cloth 38 has adhesion. A wadding member 24 having a heat retaining property is airtightly put in the air storage space 22a, and the base end portion 38e of the cylindrical cloth 38 is closed by a cylindrical back cloth 52 made of an air-permeable cloth.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an exhaust port for a heat insulator provided in a heat insulator used in cold regions and the like. [Background Art]

[0002] Conventionally, some heat insulators used for cold protection have a heat insulating material interposed between an outer fabric and a lining fabric. There are also heat insulators that are inflated by introducing air between the outer fabric and the lining fabric to achieve high heat retention performance. For example, the garment of Patent Document 1 is provided with an air bag capable of enclosing air, a storage portion that stores and covers the air bag covering around the neck inside the garment, an air pump, an air feed pipe, and a valve. This garment inflates the air bag by introducing air thereinto via the air pump, thereby eliminating and blocking the gap between the collar of the garment and the neck. This prevents inflow of air from the outside and maintains heat retention performance. However, the structure is complicated, and since the air pump, the air feed pipe, and the valve have three-dimensional shapes, there is also a problem that wearing comfort is poor. Furthermore, air cannot be rapidly exhausted from the air bag, so handleability is poor when the air bag is not used or when storing the heat insulator.

[0003] Accordingly, some products with a simple structure are provided with an air intake port and an air injection valve. In the garment and the method for manufacturing the same of Patent Document 2, the garment comprises an outer fabric made of air-impermeable fabric, a lining fabric also made of air-impermeable fabric, an adhesive portion of a predetermined pattern that hermetically bonds the peripheral edges and inner sides of the outer fabric and the lining fabric, an air chamber surrounded by the outer fabric, the lining fabric, and the adhesive portion, an air intake port provided on the outer fabric or the lining fabric for introducing outside air into the air chamber between the outer fabric and the lining fabric, and an air injection valve that communicates the air intake port with the air chamber. The air injection valve is a narrow flow path formed by bonding the outer fabric and the lining fabric at the adhesive portion. A pressure reducing valve for discharging air in the air chamber is provided on one of the outer fabric and the lining fabric. In this garment, air is introduced from the air intake port, passes through the flow path of the air injection valve, and enters the air chamber. When the air chamber is filled with air to a certain extent, the garment achieves high heat retention performance. When the garment is not worn, air in the air chamber is discharged through the pressure reducing valve, and the outer fabric and the lining fabric are folded to be stored compactly. [Prior Art Documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-2503 [Patent Document 2] Japanese Patent Publication No. 2005-264393 [Overview of the project] [Problems that the invention aims to solve]

[0005] In the case of the above-mentioned Patent Document 2, the air injection valve is a narrow channel made by bonding the outer fabric and the lining together at the adhesive joint. Because it is flat, it is comfortable to wear, but the airtightness is insufficient. Furthermore, the pressure reducing valve that releases air from the air chamber is not designed to be flat, and there is a risk that the pressure reducing valve may cause discomfort to the wearer.

[0006] This invention was made in view of the problems of the background technology described above, and aims to provide an exhaust port for a heat-retaining device that can reliably seal the air, efficiently exhaust the air when it is needed, and has a good user experience. [Means for solving the problem]

[0007] The present invention relates to an exhaust port for a heat-retaining device, which is attached to a heat-retaining device in which all or part of the inner space formed by connecting a lining fabric and an outer fabric to form a bag-like structure is an air-filled space, wherein a cylindrical fabric is provided at an opening formed in the outer fabric or the lining fabric located in the air-filled space, and the cylindrical fabric has a tip, which is one opening of the cylinder, located outside the opening, and a base end opposite to the tip, located inside the opening, communicating with the air-filled space and the outside air, and is an exhaust port for a heat-retaining device that can be flattened and stored inside the opening.

[0008] The aforementioned cylindrical fabric is The aforementioned The cylindrical fabric is folded multiple times along folding positions approximately perpendicular to the insertion direction of the cylindrical body, rolled up compactly, and stored inside the opening. The inner surface of the cylindrical fabric is designed to be tightly sealed. possess .

[0009] A heat-retaining padding material is sealed inside the air-containing space, and the base end of the cylindrical fabric is sealed with a breathable inner lining fabric, which prevents the padding material placed inside the air-containing space from coming out of the cylindrical fabric.

[0010] A locking member is provided at the edge of the opening to house the cylindrical fabric and close the opening so that it can be opened and closed. The cylindrical fabric is made of a single piece of fabric, which is flattened along a pair of fold lines along the insertion direction, and a pair of overlapping side edges are located between the pair of fold lines and are bonded to each other with adhesive. [Effects of the Invention]

[0011] The exhaust vent for thermal insulation equipment of the present invention is attached to thermal insulation equipment that adjusts heat retention by introducing and releasing air between the outer and inner fabrics. It reliably seals the air and efficiently exhausts it when necessary. It has a flat structure, does not cause discomfort to the user, and provides a good user experience. [Brief explanation of the drawing]

[0012] [Figure 1] These are front views (a) and (b) of a jacket, which is a thermal garment equipped with an exhaust port for thermal garments according to one embodiment of this invention, showing the state with the air removed and the state with air in it. [Figure 2] This is a front view (a) showing the cylindrical fabric of the exhaust vent for the heat-retaining device in a retracted state, and a front view (b) showing the cylindrical fabric in a pulled-out state. [Figure 3] This is a perspective view of the cylindrical fabric of the exhaust port for the heat-insulating device in this embodiment. [Figure 4] This is a partially cutaway perspective view of the exhaust port for the heating device in this embodiment. [Figure 5] The images show a front view (a) of a test bag with the exhaust port for the heat-retaining device attached in the air-removed state, a front view (b) of the bag with air in it, a front view (c) of the bag in the process of being pulled out, and a front view (d) and a perspective view (e) of the bag with the bag pulled out and the air removed. [Figure 6] This graph shows the test results of the heat retention performance of a heat-retaining device fitted with an exhaust port for heat-retaining devices according to this embodiment. [Modes for carrying out the invention]

[0013] The embodiments of this invention will now be described based on the drawings. Figures 1 to 5 show one embodiment of this invention, in which the exhaust vent 10 for the heat-retaining device in this embodiment is provided on a heat-retaining device used in cold regions, and in this case it is attached to a jacket 12. Figure 1 is a front view of the jacket 12, which is formed by sewing together parts such as a front body, back body, and sleeves that cover the wearer's upper body, and a zipper 14 that opens and closes when putting on or taking off the jacket is provided in the center of the front body. The jacket 12 is made by laminating a lining fabric 16 located on the side of the wearer's body and an outer fabric 18 located on the opposite side from the body. The lining fabric 16 and the outer fabric 18 are made of low-breathability or non-breathability fabric.

[0014] The lining fabric 16 and the outer fabric 18 are overlapped with their reverse sides facing each other, and the lining fabric 16 and the outer fabric 18 are connected to form an inner space 22 that is shaped like a bag. The lining fabric 16 and the outer fabric 18 are connected by sewing seams 20. An airtight sheet (not shown) is attached to the seams 20 to ensure airtightness. The seams 20 are provided on the front, back, and sleeves of the jacket 12 at predetermined intervals in the vertical direction of the wearer when the jacket 12 is worn. In addition to sewing seams 20, adhesive may also be used, in which case an airtight sheet is not necessary. The method of connecting the lining fabric 16 and the outer fabric 18, and the lining fabric 16 and the outer fabric 18, is selected using materials and sewing specifications that can maintain connection strength against air pressure. In the case of adhesive, materials that are resistant to peeling should be used. An insulating padding material 24 is sealed and placed inside the inner space 22, and the padding material 24 is, for example, down.

[0015] The inner space 22 of the jacket 12 is an air accommodation space 22a that can additionally receive air, and the air accommodation spaces 22a are continuously connected to each other so as to allow ventilation therebetween. For example, a part of the seam 20 dividing the air accommodation space 22a is interrupted, so that mutual ventilation is enabled. On the left chest of a wearer of the jacket 12, an injection port 26 is provided on the back fabric 16. The injection port 26 is provided with, for example, an air supply valve made of synthetic resin. The injection port 26 is a valve that only allows air supply and does not allow exhaust, and enables communication between the air accommodation space 22a and outside air. On the left abdomen of the wearer of the jacket 12, at a position close to the hem, an exhaust port for a heat-retaining tool 10 is provided. The exhaust port for a heat-retaining tool 10 communicatively connects the air accommodation space 22a and outside air in an openable and closable manner, as will be described later.

[0016] When the jacket 12 with the exhaust port for a heat-retaining tool 10 closed is filled with air into the air accommodation space 22a from the injection port 26 by a pump (not shown) or the like, the entire jacket 12 inflates as shown in Fig. 1(b), and air is caused to be contained in the batting member 24, whereby the heat insulation performance can be improved. By keeping the exhaust port for a heat-retaining tool 10 closed, air does not leak, and a high air pressure state is maintained. When the exhaust port for a heat-retaining tool 10 is opened and the jacket 12 is compressed, the air in the air accommodation space 22a is exhausted, and as shown in Fig. 1(a), the thickness of the entire jacket 12 is reduced, and the heat insulation performance is decreased. Accordingly, the jacket 12 can change the heat insulation performance and thickness of the air accommodation space 22a in accordance with the outside temperature and the ease of exercise.

[0017] Next, the exhaust port for a heat-retaining tool 10 will be described with reference to Figs. 2 to 4. In order to provide the exhaust port for a heat-retaining tool 10 on the back fabric 16, a rectangularly cut opening 30 is formed, and the opening 30 is formed to be elongated in a direction crossing the vertical direction of the wearer's body. In the opening 30, a binding fabric 32 made of the same fabric as the back fabric 16 is provided. At the center of the binding fabric 32, a convex member 34a of a snap button 34 serving as a locking member is attached. A lower end portion 32a of the binding fabric 32 is not sewn to a lower end portion 30a of the opening 30, and forms an entrance / exit 36.

[0018] The opening 30 is provided with a cylindrical cloth 38 forming the exhaust vent 10 for a heat retaining device, and the cylindrical cloth 38 is made of the same fabric as the back fabric 16. As shown in Figure 3, the cylindrical cloth 38 is formed by folding a piece of fabric along a pair of folding lines 38b extending along the insertion direction, overlapping a pair of side edge portions 38a along the insertion direction with each other, and bonding them with an adhesive glue 41 to form a cylindrical body, which is then flattened. An adhesive sheet 40 such as a non-slip adhesive sheet is adhered to the flattened inner side surface 38c to impart adhesion. The adhesive sheet 40 is made of, for example, a silicon sheet. The pair of side edge portions 38a overlapped with each other are located substantially midway between the pair of folding lines 38b, that is, midway in the width direction of the cylindrical cloth 38. The length of the cylindrical cloth 38 in the insertion direction is about 4 to 5 times the vertical length of the opening 30 along the wearer's body.

[0019] The cylindrical cloth 38 passes through the access opening 36 and is inserted and attached to the opening 30, with the flattened surface being parallel to the back fabric 16. A distal end portion 38f, which is one opening of the cylindrical body of the cylindrical cloth 38, is located outside the opening 30, and a proximal end portion 38e opposite to the distal end portion 38f is located inside the opening 30 in the air accommodation space 22a. The air accommodation space 22a communicates with the outside air via the cylindrical cloth 38 of the exhaust vent 10 for a heat retaining device. The insertion direction of the cylindrical cloth 38 is along the vertical direction of the wearer's body, and is substantially perpendicular to the lower end portion 30a of the opening 30. On the outer side surface 38d of the cylindrical cloth 38, a reinforcing cloth 46 made of the same fabric as the back fabric 16 is provided around the entire circumference of the cylindrical cloth 38 on the opening 30 side. The cylindrical cloth 38 can be compacted by rolling it while folding it multiple times at a substantially right angle to the insertion direction of the cylindrical body, and then stored in the opening 30 after passing through the access opening 36. Here, the cylindrical cloth 38 is folded three times at three folding positions 48 for storage. In the folding method at the folding positions 48 of the cylindrical cloth 38, the distal end portion 38f of the cylindrical cloth 38 is folded back in a direction away from the back fabric 16. The side edge portion 38a of the cylindrical cloth 38 is located on the back fabric 16 side when the cylindrical cloth 38 extends downward from the opening 30.

[0020] The base end 38e of the cylindrical fabric 38, located within the air-containing space 22a, is continuously sealed by a cylindrical inner fabric 52 made of a breathable fabric such as mesh. The cylindrical inner fabric 52 is formed in a bag shape, preventing the padding material 24 placed in the air-containing space 22a from coming out of the cylindrical fabric 38.

[0021] A strip-shaped tongue 44 is provided at the lower end 30a of the opening 30, and the recessed material 34b of a snap button 34 is attached to the tip of the tongue 44. When the cylindrical fabric 38 is inserted into the opening 30, the tongue 44 covers the piping fabric 32, and the recessed material 34b of the tongue 44 engages with the convex member 34a of the piping fabric 32, allowing the snap button 34 to be fastened, thereby closing the entrance 36 so that it can be opened and closed, and storing the cylindrical fabric 38. The exterior of the exhaust port 10 for the heat-retaining device is pocket-shaped, with a piping fabric 32 that can be opened and closed with a snap button 34.

[0022] When inflating the air-retaining space 22a of the jacket 12, as shown in Figure 2(a), the cylindrical fabric 38 is folded three times at the folding position 48 and stored inside the opening 36, and the snap button 34 is fastened. The cylindrical fabric 38 is folded flat into a cylindrical shape, and the airtight sheets 40 face each other and are in close contact with each other, so that air cannot pass through the inside of the cylindrical fabric 38, blocking ventilation and closing the space. No air leaks from the air-retaining space 22a, and a high pressure state is maintained.

[0023] To release the air from the air-retaining space 22a of the jacket 12, as shown in Figure 2(b), unfasten the snap button 34 to open the inlet 36, pull out the tubular fabric 38 contained inside, open the fold at the folded position 48, and extend it. The air-retaining space 22a will then communicate with the outside air through the tubular fabric 38, allowing for ventilation. When the jacket 12 is compressed in this state, the air inside the air-retaining space 22a will be exhausted to the outside through the tubular fabric 38.

[0024] Next, the detailed structure and manufacturing process of the exhaust port 10 for the heat-insulating device will be explained based on Figure 4. Figure 4 is a partially broken perspective view of the exhaust port 10 for the heat-insulating device. First, the adhesive sheet 40 for the cylindrical fabric 38 is adhered to the inner surface 38c of the cylindrical fabric 38. The adhesive sheet 40 reaches the tip 38f of the cylindrical fabric 38 and is provided at a position slightly away from the opposite base end 38e, but does not reach the base end 38e.

[0025] Next, the reinforcing fabric 46 of the tube is glued to the outside of the tube fabric 38. The length of the reinforcing fabric 46 in the insertion direction is about half the length of the tube fabric 38. An opening 30 is made in the lining fabric 16, and the piping fabric 32 and the connecting fabric 50 are sewn to the opening 30. The connecting fabric 50 is made of a low-breathability or non-breathability fabric and is attached to the lower end 30a of the opening 30, overlapping the back side of the piping fabric 32.

[0026] Next, in order to connect the tubular fabric 38 to the lining fabric 16, the end of the reinforcing fabric 46 of the tubular body is sewn to the upper end 32b of the piping fabric 32, opposite to the lower end 32a, or to the upper end of the connecting fabric 50. The inner tubular fabric 52, made of breathable fabric, is sewn to the base end 38e of the tubular fabric 38, which is located on the back side of the piping fabric 32. The inner tubular fabric 52 is cut slightly larger and has tucks. Then, the adhesive sheet 54 is attached to sandwich the base end 38e and sealed.

[0027] Furthermore, a strip of connecting fabric 56 is sewn onto the inner lining fabric 52, and the connecting fabric 56 is glued to the inside of the lining fabric 16. The connecting fabric 56 is made of a low-permeability or non-permeable fabric. This completes the exhaust vent 10 for the heat-retaining device.

[0028] The method of using the jacket 12 of this embodiment will be explained based on the example of the test bag in Figures 1 and 5. As shown in Figure 5(a), the exhaust port 10 for the heat-retaining device is normally closed. From this state, as shown in Figure 5(b), air is filled into the air-retaining space 22a from the inlet 26 of the jacket 12 in Figure 1, etc., expanding the thickness of the air-retaining space 22a and allowing air to be contained in the padding material 24. As shown in Figure 1(b), the jacket 12 becomes thicker, resulting in a jacket 12 with high heat insulation properties. At this time, since the exhaust port 10 for the heat-retaining device is closed, the air in the air-retaining space 22a does not leak out.

[0029] Depending on the outside temperature and ease of movement, when reducing the air in the air-retaining space 22a or storing the jacket 12, as shown in Figure 5(c), unfasten the snap button 34, open the entrance 36, pull out the tubular fabric 38 stored inside, and open the fold at the folded position 48. As shown in Figures 5(d) and 5(e), when all the folds of the tubular fabric 38 are opened and extended, the adhesion of the adhesive sheet 40 weakens, and the air in the air-retaining space 22a communicates with the outside air through the tubular fabric 38.

[0030] When the jacket 12 is compressed in this state, the air in the air-containing space 22a is exhausted through the tubular fabric 38. As shown in Figure 1(a), the jacket 12 becomes thinner, its heat insulation performance decreases, and its volume also decreases. When the amount of air becomes the desired small amount, the exhaust port 10 for the heat-retaining device is closed again. Even when not wearing the jacket, the air in the air-containing space 22a is removed through the exhaust port 10 for the heat-retaining device, thinning the gap between the lining fabric 16 and the outer fabric 18 of the jacket 12, allowing for compact storage. The jacket 12 can also be folded while exhausting the air, and since the exhaust port 10 for the heat-retaining device is located near the hem, it is a suitable position for exhausting the air while folding.

[0031] According to the exhaust port 10 for the heat-retaining garment of this embodiment, the air in the heat-retaining garment, which adjusts heat retention by introducing and releasing air between the outer fabric 18 and the inner fabric 16, can be reliably sealed and efficiently exhausted when air is released. The exhaust tubular fabric 38 is large and has a flat structure, allowing for efficient exhaust and providing a comfortable fit without causing discomfort to the wearer. When the tubular fabric 38 is folded, ventilation is blocked, and when the tubular fabric 38 is pulled out and extended, ventilation becomes possible, making the switching process easy. The tubular fabric 38 is made by joining the side edges 38a together at the center of the width with adhesive glue 41, minimizing the occurrence of thickness differences and preventing air from entering through the differences. Since the air-containing spaces 22a are separated by seams 20, ventilation is ensured, but the padding material 24 does not move, so there is no risk of deformation. Since a breathable inner tube fabric 52, such as a bag-shaped mesh fabric, is provided at the base end 38e of the tubular fabric 38, the padding material 24 placed in the air-containing space 22a does not come out of the tubular fabric 38.

[0032] Furthermore, the exhaust port for the heat-retaining device of this invention is not limited to the above embodiment, the order of the manufacturing process may differ from that of the above embodiment, and the structure and mounting positions of reinforcing fabric, connecting fabric, linking fabric, etc., may also be other. The position and number of seams that sew the backing fabric and the outer fabric together, the shape of the air-containing space, etc., can be freely changed.

[0033] The location for the exhaust vent for the heat-retaining garment can be anywhere, not just near the hem on the left side of the wearer's abdomen as in the above embodiment. However, to allow for exhaust while folding the jacket and to minimize discomfort during wear, the edges of the hem, collar, or cuffs are preferable locations. The means for closing the exhaust vent for the heat-retaining garment can be anything other than a tongue and snap button; buttons, Velcro®, hooks, zippers, magnets, etc., can be freely selected. The number of times the tubular fabric is folded when storing it can be anything other than the above, depending on the required airtightness, but considering practicality, 2 to 4 folds is appropriate. The shape of the tubular fabric is flexible, but a rectangular or tapered shape is preferable to prevent air from entering. The tubular fabric is made by joining the side edges together in the middle of the width using adhesive, but other methods are also acceptable.

[0034] The exhaust vents for insulation equipment can be attached to a variety of insulation products, not just jackets, but also trousers, sleeping bags, blankets, and inflatable mats used inside tents to block the cold from the ground. The filling material does not have to be down; synthetic fibers, cotton, etc., can be freely selected, and the vents can also be applied to exhaust vents in air-filled spaces that do not have a filling material. [Examples]

[0035] A heat retention test was conducted on a heat-retaining device equipped with the heat-retaining device exhaust port, which is the invention of this application, by comparing the amount of air. The sample consisted of an air-containing space filled with a cotton padding material, into which air was introduced. For comparison, a sample was used in the same air-containing space filled with the cotton padding material, but without air. The test results are shown in Figure 6.

[0036] From these results, it was found that the heat-retaining garment equipped with the heat-retaining garment exhaust vent of the present invention had higher heat retention when the cotton was infused with air than when it was made of cotton alone. In a relative comparison, when the cotton infused with air was set to 100%, the cotton alone was 70%. This shows that infusing air increases warmth by 30%. [Explanation of Symbols]

[0037] 10 Exhaust vent for heating device 12 Jackets 16 Lining 18 Outer fabric 22 Interior space 22a Air-containing space 24 Padding material 30 openings 32. Beaded cloth 34 snap buttons 38 Tube cloth 38a Side edge 38b broken line 38c inner surface 38e proximal end 38f Tip 40 Adhesive Sheets 41 Adhesive glue 48 Folding position 52 Tube back cloth

Claims

1. In an exhaust port for a heat-retaining device that is attached to a heat-retaining device having an air-retaining space for filling all or part of the inner space, which is formed by connecting the inner and outer fabrics to form a bag, A cylindrical fabric is provided in an opening formed in the outer fabric or the inner fabric located in the air-containing space, The aforementioned cylindrical fabric has a tip, which is one opening of the cylindrical body, located outside the opening, and a base end, opposite to the tip, located inside the opening, communicating with the air-retaining space and the outside air, and can be flattened and stored inside the opening. An exhaust port for a heat-insulating device, characterized in that the inner surface of the cylindrical fabric is tightly fitted, and the cylindrical fabric is folded multiple times along folding positions perpendicular to the insertion direction of the cylindrical body and wound up, and then stored inside the opening.

2. An exhaust port for a heat-insulating device, which is attached to a heat-insulating device having an air-containing space for filling all or part of an inner space formed by connecting a lining fabric and an outer fabric into a bag shape, A cylindrical fabric is provided in an opening formed in the outer fabric or the inner fabric located in the air-containing space, The aforementioned cylindrical fabric has a tip, which is one opening of the cylindrical body, located outside the opening, and a base end, opposite to the tip, located inside the opening, communicating with the air-retaining space and the outside air, and can be flattened and stored inside the opening. The aforementioned air-containing space is sealed and filled with a heat-retaining padding material. An exhaust port for a heat-retaining device, characterized in that the base end of the tubular fabric is sealed with a tubular inner fabric made of breathable fabric, and the tubular inner fabric prevents the padding material placed in the air-retaining space from coming out of the tubular fabric.

3. The exhaust port for a heat-insulating device according to Claim 2, wherein the cylindrical fabric is folded multiple times along folding positions perpendicular to the insertion direction of the cylindrical body and stored inside the opening.

4. The exhaust port for a heat-insulating device according to Claim 1, wherein a locking member is provided on the edge of the opening, and the cylindrical cloth is stored therein to close the opening so that it can be opened and closed.

5. An exhaust port for a heat-insulating device, which is attached to a heat-insulating device having an air-containing space for filling all or part of an inner space formed by connecting a lining fabric and an outer fabric into a bag shape, A cylindrical fabric is provided in an opening formed in the outer fabric or the inner fabric located in the air-containing space, The aforementioned tubular fabric consists of a single piece of fabric, which is flattened along a pair of fold lines in the insertion direction, and a pair of overlapping side edges are located between the pair of fold lines and are bonded to each other with adhesive. The aforementioned cylindrical fabric is characterized in that its tip, which is one opening of the cylindrical body, is located outside the opening, and its base end, which is opposite to the tip, is located inside the opening and communicates with the air-containing space and the outside air, and can be flattened and stored inside the opening, and is rolled up while being folded multiple times along a folding position perpendicular to the insertion direction of the cylindrical body and stored inside the opening.

6. The exhaust port for a heat-insulating device according to claim 5, wherein the inner surface of the cylindrical fabric is tightly fitted.

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