Air injection device and functional garment comprising same

Abstract

According to an embodiment of the present invention, an air injection device is provided. The air injection device comprises: a body part which joins at least a part of the periphery of a first fabric and a second fabric disposed facing each other, and which is formed so as to accommodate air therein; an air inflow part which is formed so as to open at least a part of the upper end of the main body part without joining the first cloth and the second cloth, and through which air flows into the main body part; and a discharge part which is formed at the lower end of the main body part and discharges the air accommodated in the main body part, in which a coupling part for sealing at least a part of the air inflow part in close contact with the first cloth and the second cloth can be formed on the inner side of the air inflow part.

Description

Technical Field

[0001] The present invention relates to an air injection device and functional clothing including the same, and in particular to an air injection device capable of easily injecting air into an air receiving portion formed on clothing and functional clothing including the same. Background Art

[0002] The air injection device is used to install the medium for various purposes such as knee pads, body correction pads, abdominal belts, life jackets, rubber tubes and wrist pads, and can easily inject air into the medium and exhaust the air.

[0003] However, conventional air injection devices have a problem in that the amount of air that can be blown in by a user is limited, and the user needs to exert a lot of effort and spend more time to expand the air tube to the maximum.

[0004] On the other hand, such air injection devices are used in combination with functional clothing that can flow air into a region of clothing to give a region of clothing an elastic feel. However, conventional functional clothing requires the user to carry an additional air injection device and to disassemble and assemble the device to inject air as needed, which causes inconvenience to the user. Summary of the invention

[0005] Technical issues to be solved

[0006] The present invention is used to solve the above-mentioned problem, and its purpose is to provide an air injection device that can easily inject air into an air receiving portion formed on a garment through the air injection device, and functional clothing including such an air injection device.

[0007] The technical problems of the present invention are not limited to the technical problems mentioned above, and ordinary technicians in this field can clearly understand other technical problems not mentioned through the following records.

[0008] Means used to solve problems

[0009] According to an embodiment of the present invention, an air injection device is provided. The air injection device includes: a main body, which is formed by joining at least a portion of the periphery of a first fabric and a second fabric arranged facing each other so as to contain air inside; an air inlet, which is formed by opening at least a portion of the upper end of the main body without joining the first fabric and the second fabric so as to allow air to flow into the inside of the main body; and a discharge part, which is formed at the lower end of the main body and discharges the air contained in the main body, and a joint part for sealing at least a portion of the air inlet by tightly contacting the first fabric and the second fabric can be formed inside the air inlet.

[0010] Furthermore, a sealing portion is formed at the upper end of the main body portion to join the first cloth and the second cloth on both sides of the air inlet portion, and the first cloth and the second cloth extend upward from the sealing portion to form the air inlet portion.

[0011] Furthermore, the coupling portion may be formed by at least one of a magnet member, a zipper member, an adhesive member, or a tape member provided on the first fabric and the second fabric, respectively.

[0012] Furthermore, the coupling portion may be formed to have a predetermined length corresponding to a width of the air inlet portion.

[0013] Furthermore, if a user collects air into the main body through the air inlet and then pressurizes the main body, the volume of the main body is reduced, and the air collected in the main body can be discharged through the discharge portion.

[0014] Furthermore, as a user holds the upper end of the main body and rolls at least a portion of the main body toward the discharge portion, the volume of the main body is reduced.

[0015] Furthermore, the discharge portion may include: a connecting portion, which is connected to the inner side of the main body and forms at least one connecting hole for allowing the air contained in the main body to flow to the outside; and a valve portion, at least a portion of which is in close contact with or separated from the outside of the connecting portion to seal or open the connecting hole.

[0016] Furthermore, the air inlet portion is further provided with at least one holding portion, which protrudes upward from at least one region of the upper end of the air inlet portion, and a user holds the holding portion to separate the first fabric and the second fabric, thereby opening the air inlet portion.

[0017] Furthermore, the holding portion includes a first holding portion provided on the first fabric and a second holding portion provided on the second fabric, and the first holding portion and the second holding portion may be formed at opposite ends of the air inlet portion in the width direction thereof, respectively.

[0018] Furthermore, a region of the main body may form a convergence portion, wherein the convergence portion has an inner area that decreases as it moves from the air inlet portion toward the outlet portion, thereby guiding the air contained in the main body to flow toward the outlet portion.

[0019] According to an embodiment of the present invention, there is provided a functional garment, which may include: the air injection device; and clothing connected to the air injection device and including a plurality of air receiving parts for receiving the air injected by the air injection device.

[0020] Furthermore, the clothes may include a pocket portion, the air injection device being detachably mounted on the inner side of the pocket portion, and connected to the discharge portion and the inner side, so that the inner core of the main body portion is communicated with the air receiving portion.

[0021] Furthermore, the air injection device is housed inside the pocket portion in a rolled-up state.

[0022] Effects of the Invention

[0023] According to the present invention, the air injection device is formed by the cloth, and the user can inject air in a simple manner of blowing air into the inside of the cloth and rolling it up to compress it, thereby improving the convenience of the user.

[0024] Furthermore, according to the present invention, the user can inflate the clothes to the maximum more quickly by blowing air with less force and frequency.

[0025] Furthermore, according to the present invention, the air inflow portion is sealed by the sealing portion and the connecting portion, thereby preventing the air contained in the main body portion from flowing out.

[0026] Furthermore, according to the present invention, the flow of the air contained in the main body can be controlled only when the user applies pressure through the valve portion of the discharge portion.

[0027] Furthermore, according to the present invention, even if the air injection device is not separated from the clothes, it can be conveniently carried inside the pocket with a small volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more fully understand the drawings cited in the detailed description of the present invention, a brief description of each drawing is provided.

[0029] Figure 1 and Figure 2 Detailed Description of the Invention An air injection device according to an embodiment of the present invention is shown.

[0030] Figure 3 Detailed Description of the Invention Functional clothing according to an embodiment of the present invention is shown.

[0031] Figure 4 and Figure 5 FIG. 2 shows an air injection device according to another embodiment of the present invention.

[0032] Figure 6a and 6b The present invention is an exemplary cross-sectional view of dividing the air receiving portion of the functional clothing according to another embodiment of the present invention.

[0033] Figure 7a , 7b 7c is an exemplary diagram of a membrane dividing an air receiving portion of a functional garment according to another embodiment of the present disclosure.

[0034] Description of Reference Numerals

[0035] 100, 100': air injection device 110: main body

[0036] 111: Sealing part 112: Converging part

[0037] 120: air inflow portion 121: joint portion

[0038] 130: discharge portion 131: communication portion

[0039] 131-1: Communication hole 132: Valve part

[0040] 140: gripping portion 141: first gripping portion

[0041] 142: Second gripping part 200: Clothes

[0042] 210: air receiving section 211: first area

[0043] 212: Second area 220: Pocket

[0044] 1000: Functional clothing DETAILED DESCRIPTION

[0045] Hereinafter, an exemplary embodiment according to the present invention is described in detail with reference to the contents recorded in the accompanying drawings. Furthermore, a method for using a device according to an embodiment of the present invention is described in detail with reference to the contents recorded in the accompanying drawings. The same reference numerals or numbers disclosed in the various figures represent components or structural elements that perform substantially the same functions. Hereinafter, for the sake of convenience of description, the directions of up, down, left, and right are based on the figures, and the scope of the rights of the present invention is not limited to these directions.

[0046] Terms including ordinal numbers such as first and second can be used to describe a variety of structural elements, but structural elements are not limited to terms. Terms are used only for the purpose of distinguishing one structural element from another structural element. For example, without departing from the scope of the present invention, the first structural element can be named as the second structural element, and similarly, the second structural element can also be named as the first structural element. The term "and / or" includes a combination of multiple related items or one item among multiple related items.

[0047] The terms used in this specification are used to illustrate the embodiments and are not used to limit and / or define the present invention. Singular expressions include plural expressions unless the context clearly indicates a different meaning. In this specification, it should be understood that terms such as including or having are used to specify the existence of features, numbers, steps, actions, structural elements, components or combinations thereof recorded in the specification, without excluding in advance the existence or additional possibility of one or more other features or numbers, steps, actions, structural elements, components or combinations thereof.

[0048] Throughout the specification, when a part is connected to another part, it includes not only the case of direct connection but also the case of indirect connection via other structures. Furthermore, when a part includes a structural element, unless there is a special record to the contrary, it means that other structural elements may also be included, and other structural elements are not excluded.

[0049] Figure 1 and Figure 2 Detailed Description of the Invention An air injection device according to an embodiment of the present invention is shown.

[0050] Reference Figure 1 and Figure 2 The air injection device 100 may include a main body 110 , an air inlet 120 , and an air outlet 130 .

[0051] The main body 110 contains air inside, and its shape is deformed according to the pressure applied by the user, so that the air inside can flow. For this purpose, the main body 110 is formed of a soft material and can be deformed. In the embodiment, the main body 110 is composed of a first fabric and a second fabric arranged facing each other, and at least a part of the periphery of the first fabric and the second fabric is joined, so that the air can be contained inside. In order to contain the air inside, the main body 110 can be formed in a manner having a sufficient volume and length.

[0052] In an embodiment, a polymer film coating having air impermeability may be formed on at least one region of the first cloth and / or the second cloth, so that the first cloth and the second cloth can prevent the air inside the body portion 110 from flowing out to the outside.

[0053] If the user pressurizes the main body 110 after collecting air inside the main body 110 through the air inlet 120, the volume of the main body 110 can be reduced. For example, the user holds the upper end of the main body 110 and pressurizes the main body 110 by rolling or folding at least a part of the main body 110 toward the discharge part 130, thereby reducing the volume of the main body 110. At this time, the volume of the main body 110 is reduced, and the air collected in the main body 110 can be discharged to the outside through the discharge part 130.

[0054] In an embodiment, a sealing portion 111 may be formed at the upper end of the body 110 to join the first fabric and the second fabric on both sides of the air inlet portion 120. If the upper end of the body 110 is fully opened, when a user blows air into the inside of the body 110 through the air inlet portion 120, a portion of the air blown in by the user or the air contained inside the body 110 may leak through the fully opened upper end of the body 110. The sealing portion 111 opens only a portion of the upper end of the body 110, thereby minimizing the amount of air leakage.

[0055] In an embodiment, the sealing portion 111 is as follows Figure 1 and Figure 2 As shown, the first cloth and the second cloth may be joined on both sides of the air inlet 120 , but the present invention is not limited thereto. The first cloth and the second cloth on one side of the air inlet 120 may be joined.

[0056] A convergence portion 112 may be formed in a region of the body 110 to guide the air received in the body 110 to flow toward the discharge portion 130. To this end, the convergence portion 112 may be formed in a shape in which the inner area or width decreases as it moves from the air inlet 120 toward the discharge portion 130. Thus, the air received in the body 110 becomes denser as it moves from the air inlet 120 toward the discharge portion 130, and thus the air can flow more efficiently through the discharge portion 130.

[0057] The air inlet 120 can flow air into the inner side of the body 110. For example, in the air inlet 120, the first cloth and the second cloth are not joined, and at least a portion of the upper end of the body 110 can be opened. Also, for example, the air inlet 120 can be formed so that the first cloth and the second cloth extend upward from the sealing portion 111 of the body 110.

[0058] In the embodiment, before the air inlet 120 is opened, the inside of the main body 110 does not contain air, and when the air inlet 120 is opened under low pressure, the outside air can instantly flow into the inside of the main body 110 with low pressure. Thus, even if the user blows air with little force and a few times, the volume of the main body 110 can be quickly increased.

[0059] A joint portion 121 may be formed inside the air inlet portion 120, and the joint portion 121 makes the first fabric and the second fabric close together, so as to seal at least a portion of the air inlet portion 120. After the user blows air into the inside of the main body 110 through the air inlet portion 120, the air inlet portion 120 is sealed by the joint portion 121, thereby preventing the air contained in the main body 110 from flowing out.

[0060] In an embodiment, the connecting portion 121 may be composed of at least one of a magnet component, a zipper component, an adhesive component or a belt component respectively provided on the first fabric and the second fabric, but is not limited thereto and may be composed of a variety of components such as Velcro-type tape, a zipper, etc. that can be tightly attached to the first fabric and the second fabric.

[0061] In the embodiment, the joint portion 121 is formed with a predetermined length corresponding to the width of the air inlet portion 120, so that the air inlet portion 120 can be more effectively sealed. For example, the magnet member or the like constituting the joint portion 121 is formed with a predetermined length, so that when the user winds up the main body 110, the user holds the joint portion 121 and winds up with the joint portion 121 as the center, thereby making it easier to pressurize the main body 110.

[0062] The discharge part 130 is formed at the lower end of the main body 110 and communicates with the main body 110, and can discharge the air contained in the main body 110 to the outside. In the embodiment, the discharge part 130 is connected to a variety of media that require air to flow in, such as clothing, air pumps, sheaths, belly bands, life jackets, life buoys, etc., and can connect the above media with the inside of the main body 110. Through the discharge part 130, the air contained in the main body 110 can be injected into the inside of the above media.

[0063] The discharge portion 130 may include a communication portion 131 and a valve portion 132 .

[0064] The communication portion 131 communicates with the inside of the body portion 110 and allows the air contained in the body portion 110 to flow outward. To this end, at least one communication hole 131 - 1 through which the air contained in the body portion 110 flows may be formed in the communication portion 131 .

[0065] The valve portion 132 can control the flow of air between an object such as clothing combined with the air injection device 100 and the main body 110. For example, if the user injects air into the air injection device 100 and then pressurizes the main body 110, the valve portion 132 is separated from the outer surface of the connecting portion 131, thereby opening the connecting hole 131-1. As a result, the air contained in the main body 110 can be injected into the inside of the object. And, for example, if the air has been injected into the inside of the object, the valve portion 132 is in close contact with the outer surface of the connecting portion 131, thereby sealing the connecting hole 131-1. As a result, the air contained in the inside of the object can be prevented from leaking to the outside of the object through the discharge portion 130.

[0066] In an embodiment, the valve portion 132 is formed of a soft material and can be deformed according to the pressure applied by the user to the body portion 110. For example, the valve portion 132 can be made of silicone, polyester, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polyethylene terephthalate, polycarbonate, polyacrylate, polystyrene, acrylonitrile-butadiene-styrene, nylon, polyurethane, or a combination thereof, but is not limited thereto.

[0067] according to Figure 1 and Figure 2 The air injection device 100 is exemplary and may be applicable to various structures according to embodiments of the present invention.

[0068] Figure 3 Detailed Description of the Invention Functional clothing according to an embodiment of the present invention is shown.

[0069] Specifically, Figure 3 Part (a) shows the functional clothing 1000 in a state where the air in the clothing 200 is exhausted. Figure 3 Part (b) shows the functional clothing 1000 in a state where air flows into the clothing 200 .

[0070] Reference Figure 3 , the functional clothing 1000 may include an air injection device 100 and clothing 200 .

[0071] The clothing 200 may be formed of a plurality of fabrics into a top or bottom that a user can wear, etc. However, the clothing 200 is not limited thereto and may include all forms of clothing or accessories formed of fabrics.

[0072] The clothing 200 is connected to the air injection device 100 and may include a plurality of air receiving parts 210 for receiving air inside. As described above, after receiving air inside the main body 110 by opening the air inlet part 120 of the air injection device 100, the main body 110 is rolled or folded to apply pressure, and air can be injected into the air receiving part 210 by the air injection device 100. Thus, an elastic feeling can be formed in a region of the clothing 200, and a warming function can also be performed.

[0073] For example, the clothing 200 includes a third fabric and a fourth fabric disposed facing each other in at least one region, and the air receiving portion 210 may be formed between the third fabric and the fourth fabric. Also, for example, the air receiving portion 210 may be formed in all regions of the clothing 200, but is not limited thereto, and may be formed in a joint or a region required for shock absorption, posture support, or warmth retention.

[0074] In an embodiment, a polymer film coating having air impermeability may be formed on at least one region of the third fabric and / or the fourth fabric. Thus, the third fabric and the fourth fabric may perform a shielding function of preventing the air in the air receiving portion 210 from flowing out to the outside and preventing the user from being exposed to external moisture, water, or wind.

[0075] At least one first region 211 formed by bonding the third cloth and the fourth cloth and at least one second region 212 formed by not bonding the third cloth and the fourth cloth may be formed around the air containing portion 210 .

[0076] The first area 211 can separate the air receiving section 210 from another air receiving section 210. Figure 6a As shown in the example, a polymer film coating is formed on each side of the third fabric and the fourth fabric facing each other, and the first region 211 can be formed by welding at least one region of the third fabric and the fourth fabric by at least one method of heat welding, high-frequency welding or ultrasonic welding. That is, when the third fabric and the fourth fabric are heated and pressurized, the polymer film coating melts, and the third fabric and the fourth fabric are joined, thereby forming the first region 211. However, it is not limited to this, and various deformations such as forming a polymer film coating on only one side of the third fabric and the fourth fabric can be performed. The above-mentioned welding method is only an example, and the present disclosure is not limited to this. And, for example, a plurality of first regions 211 are formed with a specified length, and can be arranged at a specified interval from each other, but it is not limited to this, and can have a variety of intervals or lengths.

[0077] In another embodiment, if Figure 6b As shown in the example of, the first area 211 may be composed of a film 2111 for dividing the air receiving section 210 from another air receiving section 210. For example, a polymer film coating 400 is formed on the sides of the third fabric and the fourth fabric facing each other, and the first area 211 may be formed by heat-melting at least one area of ​​the third fabric and the fourth fabric to form the film 2111. In addition, the film 2111 is bonded to the third fabric and the fourth fabric using an adhesive, or may be bonded using any other bonding unit. In another embodiment, by enlarging the first area 211 that divides the air receiving section using the film 2111, the air receiving capacity of the air receiving section 210 can be increased.

[0078] like Figure 7a , Figure 7b and Figure 7c As shown in the example of FIG. 2 , the film 2111 constituting the first region 211 may include air permeable units 2112 and 2113 that allow air to flow between the air receiving portions 210 . Figure 7a , Figure 7b and Figure 7c For detailed representation Figure 6b Middle membrane part ( Figure 6bIn addition, the membrane 2111 may also be formed of a porous material through which air can pass. Figure 7b and Figure 7c The air permeable units 2112 and 2113 allow air to flow between the air receiving parts 210, so that the air can be evenly received in the air receiving parts 210, so that the shape of the clothes can be better maintained and the wearer can move more freely. For example, the air permeable units 2112 and 2113 can be configured to have a region without a film as shown in the figure 2112, and can be configured to have a permeable hole 2113 in the film 2111 as shown in the figure 2113.

[0079] The width of the film 2111 constituting the thickness of the first region 211 may be different depending on the region of the garment. For example, depending on the width of the film 2111, the volume of the air receiving portion constituted by the third fabric, the fourth fabric and the film 2111 may be different. For example, when the width of the film 2111 is relatively wide, the volume of the air receiving portion 210 constituted by the third fabric, the fourth fabric and the film 2111 may be relatively large, and have higher warmth retention and elasticity. For example, when the width of the film 2111 is relatively narrow, the volume of the air receiving portion 210 constituted by the third fabric, the fourth fabric and the film 2111 may be relatively small, and the wearer's convenience of movement may be increased. For example, in the garment 200, in the region where higher warmth retention is required and the wearer's movements are less, the first region 211 may be constituted by the film 2111 having a relatively wide thickness, and in the region related to the wearer's convenience of movement, such as the joint portion of the wearer, the first region 211 may be constituted by the film 2111 having a relatively narrow thickness. The overall thickness of the membrane 2111 can be set according to the warmth retention targeted by the garment 200. The second region 212 allows the air receiving section 210 to be in air communication with another adjacent air receiving section 210. For example, the second region 212 can be formed between at least a portion of the plurality of first regions 211. When air is injected into the garment 200 by the air injection device 100, the air can be transferred to the plurality of air receiving sections 210 sequentially or simultaneously through the second region 212. For example, the air injected from the air injection device 100 into the first air receiving section is transferred to at least one second air receiving section formed adjacent to the first air receiving section to be in air communication through the second region 212, and then transferred to the next adjacent at least one third air receiving section, in which manner, the air can be transferred to the plurality of air receiving sections 210 sequentially or simultaneously.

[0080] The clothing 200 may include a pocket portion 220 on the inside of which the air injection device 100 is detachably mounted. For example, the pocket portion 220 having a receiving space on the inside may be formed by joining at least a portion of the periphery of an additional fabric layered on one side of the clothing 200. The upper end of the pocket portion 220 forms an open area, so that the air injection device 100 received inside can be exposed to the upper side of the open area.

[0081] In an embodiment, the air injection device 100 may be installed in the pocket portion 220 so that the inner side of the body portion 110 of the air injection device 100 is connected to the air receiving portion 210. To this end, the discharge portion 130 of the air injection device 100 may be connected to one of the plurality of air receiving portions 210 through an area on the inner surface of the pocket portion 220.

[0082] In the embodiment, the air injection device 100 (i.e., the main body 110) can be stored inside the pocket 220 in a rolled or folded compressed state. Thus, even if the user does not separate the air injection device 100 from the clothes 200, it can be conveniently carried in a small volume or size, and can be used regardless of the place and time, thereby achieving both portability and ease of use.

[0083] In an embodiment, Figure 3 As shown, the pocket portion 220 can be arranged on the outer side of the garment 200, but is not limited thereto, and can be arranged on the inner side of the garment 200, and can be arranged on both the outer side and the inner side. In addition, the pocket portion 220 can be arranged at the lower end of the body area of ​​the garment 200, but is not limited thereto, and can be arranged in various areas of the garment 200, such as the body, shoulder or arm area.

[0084] according to Figure 3 The functional garment 1000 is exemplary and may be applicable to various structures according to embodiments of the present invention.

[0085] Figure 4 and Figure 5 FIG. 2 shows an air injection device according to another embodiment of the present invention.

[0086] Reference Figure 4 and Figure 5 The air injection device 100' may include a body 110, an air inlet 120, an outlet 130 and a grip 140. The body 110, the air inlet 120 and the outlet 130 may be connected to Figure 1 and Figure 2 The air injection device 100 is described in the same manner.

[0087] The user separates the first cloth and the second cloth, and can hold the holding part 140 to open the air inlet 120. To this end, the holding part 140 can protrude upward from at least one region of the upper end of the air inlet 120. For example, the holding part 140 can be formed on both the first cloth and the second cloth, but it is not limited to this, and can only be formed on one of the first cloth and the second cloth. In addition, for example, the holding part 140 can be formed only in a region of the upper end of the body 120, or can be formed in the entire region of the upper end of the air inlet 120, but it is not limited to this, and can include all shapes that protrude upward to the extent that the user can hold it.

[0088] In an embodiment, the holding portion 140 may include a first holding portion 141 provided on the first fabric and a second holding portion 142 provided on the second fabric. The first holding portion 141 and the second holding portion 142 may be formed at opposite ends of the width direction of the air inlet portion 120. Thus, the user may hold the first holding portion 141 and the second holding portion 142 respectively to make it easier to separate the first fabric and the second fabric.

[0089] In the embodiment, the first gripping portion 141 is formed in a region of the upper end of the first fabric of the air inlet 120, and the first opening portion may be formed in another region of the upper end. And correspondingly, the second gripping portion 142 is formed in a region of the upper end of the second fabric of the air inlet 120, and the second opening portion may be formed in another region of the upper end. For example, the first opening portion and the second opening portion may be configured such that the upper ends of the first fabric and the second fabric protrude less upward than the first gripping portion 141 and the second gripping portion 142. Thus, the first gripping portion 141 is exposed to the second fabric by means of the second opening portion, and the second gripping portion 142 is exposed to the first fabric by means of the first opening portion, so that the user can more easily grip the first gripping portion 141 and the second gripping portion 142 to open the air inlet 120.

[0090] according to Figure 4 and Figure 5 The air injection device 100 ′ is exemplary and may be applicable to various structures according to embodiments of the present invention.

[0091] As described above, the best embodiment is disclosed in the drawings and the specification. Although specific terms are used, they are only used to illustrate the present invention and are not used to define the meaning or limit the scope of the present invention recorded in the claims. Therefore, as long as a person skilled in the art of the present invention, it can be understood that various variations and equivalent other embodiments can be realized therefrom. Therefore, the true technical protection scope of the present invention should be determined according to the technical ideas of the attached claims.

[0092] As described above, the relevant contents are described in the detailed description.

[0093] Industrial Applicability

[0094] The present invention can be used for functional clothing and the like.

Claims

1. An air injection device, characterized in that: include: A main body portion is formed by joining at least a portion of the periphery of the first fabric and the second fabric arranged facing each other so as to contain air inside; an air inlet portion, wherein the first cloth and the second cloth are not joined and is formed in a manner of opening at least a portion of an upper end of the main body portion so as to allow air to flow into the inside of the main body portion; and The exhaust part is formed at the lower end of the main body and exhausts the air contained in the main body. A joint portion for sealing at least a portion of the air inlet portion by closely contacting the first cloth and the second cloth is formed inside the air inlet portion.

2. The air injection device according to claim 1, characterized in that: A sealing portion is formed at the upper end of the main body portion to join the first cloth and the second cloth to both sides of the air inlet portion, and the first cloth and the second cloth extend upward from the sealing portion to form the air inlet portion.

3. The air injection device according to claim 1, characterized in that: The connecting portion is formed by at least one of a magnet member, a zipper member, an adhesive member, or a tape member provided on the first cloth and the second cloth, respectively.

4. The air injection device according to claim 3, characterized in that: The joint portion is formed with a predetermined length corresponding to the width of the air inflow portion.

5. The air injection device according to claim 1, characterized in that: When a user collects air into the main body through the air inlet and then pressurizes the main body, the volume of the main body decreases, and the air collected in the main body is discharged through the discharge portion.

6. The air injection device according to claim 5, characterized in that: As a user grips the upper end of the main body and rolls up at least a portion of the main body toward the discharge portion, the volume of the main body is reduced.

7. The air injection device according to claim 5, characterized in that: The discharge unit comprises: a communication portion communicating with the inner side of the main body portion and forming at least one communication hole for allowing air contained in the main body portion to flow to the outside; and At least a part of the valve part is in close contact with or separated from the outer surface of the communication part to seal or open the communication hole.

8. The air injection device according to claim 1, characterized in that: The air inlet portion further includes at least one holding portion, the at least one holding portion protruding upward from at least one region of the upper end of the air inlet portion. A user holds the holding portion to separate the first cloth and the second cloth, thereby opening the air inlet portion.

9. The air injection device according to claim 8, characterized in that: The holding portion includes a first holding portion provided on the first fabric and a second holding portion provided on the second fabric. The first gripping portion and the second gripping portion are formed correspondingly at opposite ends of the air inlet portion in the width direction.

10. The air injection device according to claim 1, characterized in that: A region of the main body forms a convergence portion, the inner area of ​​the convergence portion decreases as it moves from the air inlet portion toward the outlet portion, and the air contained in the main body is guided to flow toward the outlet portion.

11. A functional garment, characterized in that: include: The air injection device according to any one of claims 1 to 10; as well as The clothes are connected to the air injection device and include a plurality of air receiving parts for receiving the air injected by the air injection device.

12. The functional clothing according to claim 11, characterized in that: The garment comprises a pocket portion, the pocket portion receiving the air injection device on the inner side, and the discharge portion of the air injection device is connected to at least one of the air receiving portions through an area of ​​the inner surface.

13. The functional clothing according to claim 12, characterized in that: The air injection device is housed inside the pocket in a rolled or folded state.

Images