Down jacket

Abstract

The utility model provides a down jacket which comprises a back piece, the back piece comprises a surface layer and a down filling part, and the surface layer is constructed to be arranged on the outer side face of the back piece; the down filling part is constructed to be arranged in the back piece and comprises a first cloth layer, a second cloth layer and a down feather layer, the space between the first cloth layer and the second cloth layer is constructed to be divided into at least two down feather filling cavities through quilting lines, and the down feather layer is constructed to be located in the down feather filling cavities; a ventilation opening is formed in the back of the surface layer, a ventilation hole is formed in the position, corresponding to the ventilation opening, of the down filling part, and air on the inner side of the down filling part is configured to be exhausted to the outside through the ventilation hole and the ventilation opening. When a user sweats in a high-temperature environment or in a violent activity state, air mixed with sweat can penetrate through the air holes in the down filling part and the air holes in the surface layer to be discharged to the outside, so that the sweat on the skin surface of the human body can be discharged in time, the stuffiness feeling of the human body is reduced, and the wearing comfort of the user is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the field of clothing, and more specifically, to a down jacket. Background Art

[0002] Down jackets are commonly used for keeping warm in winter. They are usually filled with down and tiny feathers. Down and tiny feathers contain a lot of air, which allows a layer of air to form inside the down jacket. The air layer can effectively block the cold air from the outside and help keep the body heat from dissipating, thereby achieving a warming effect.

[0003] Most of the down jackets on the market are filled in a unified way. All parts of the down jacket are filled in the same way, with the same filling material and the same filling coefficient. The common filling structure of down jackets is a four-layer filling structure, namely "face cloth-bladder cloth-bladder cloth-lining cloth". In addition, there are three-layer and two-layer filling structures, and the four-layer structure is the most common. Conventional down jackets are filled in proportion to the size of each part of the down jacket. The filling material of each part of the down jacket is goose down or duck down, and the thickness of the appearance is uniform.

[0004] However, when a person is wearing a down jacket and moving around, the temperature and amount of sweat in different parts of the body are actually different. Compared with other parts, the side and armpit parts of the body are more prone to sweating. If conventional filling methods are used, the down itself has poor perspiration and moisture permeability. When the human body is in a high temperature environment or under relatively intense activities, it is easier to accumulate sweat in the side and armpit parts. The down jacket cannot discharge the sweat on the surface of the human skin in time, which will cause a strong feeling of stuffiness and low wearing comfort. Moreover, the humidity on the surface of the human skin and the relative humidity between the human skin and the air are too high, and the heat of the human body will be transferred to the surrounding air through the down jacket, causing the body's perceived temperature to drop. Moreover, the conventional four-layer down jacket with a filling structure is relatively thick and heavy overall, which makes wearing it more burdensome and provides a poor experience. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the present disclosure provides a down jacket.

[0006] According to a first aspect of the present disclosure, there is provided a down jacket, comprising a back piece, the back piece comprising:

[0007] a surface layer, the surface layer being configured to be disposed on the outer side of the back sheet;

[0008] A down filling part, the down filling part is configured to be arranged inside the back piece, and comprises a first cloth layer, a second cloth layer and a down layer, the first cloth layer and the second cloth layer are configured to be divided into at least two down filling cavities by quilting lines, and the down layer is configured to be located in the down filling cavity;

[0009] The back of the surface layer is provided with a ventilation opening, the filling part is provided with ventilation holes at positions corresponding to the ventilation opening, and the air inside the filling part is constructed to be discharged to the outside through the ventilation holes and the ventilation opening.

[0010] In one embodiment of the present disclosure, a breathable mesh is provided on the inner side of the back of the surface layer corresponding to the position of the ventilation opening.

[0011] In one embodiment of the present disclosure, a shielding portion is provided to cover the air opening; a vent is provided below the shielding portion, and the vent is connected to the air opening; the shielding portion is constructed to fit with the breathable mesh when the back piece is in a flat state and close the vent, and to be at least partially separated from the breathable mesh when in an active state and open the vent.

[0012] In one embodiment of the present disclosure, at least one pressing area is provided on at least one of the filling cavities, and the corresponding first cloth layer and the surface layer of the pressing area are constructed as an integrated structure; the air vents include a first through hole penetrating through the pressing area, and the air inside the filling part is constructed to flow to the gap between the filling part and the surface layer at least through the first through hole.

[0013] In one embodiment of the present disclosure, the pressing area is constructed to be circular; and the first through hole is arranged in a central area of ​​the pressing area.

[0014] In one embodiment of the present disclosure, at least two of the filling cavities are provided with at least two of the pressing areas, and the first through holes on each of the pressing areas are constructed to be symmetrically distributed about the back midline of the down jacket.

[0015] In one embodiment of the present disclosure, the diameter of the pressing area ranges from 10 mm to 40 mm; the aperture of the first through hole ranges from 0.5 mm to 2 mm.

[0016] In one embodiment of the present disclosure, the filling portion includes a plurality of filling cavities, and each of the filling cavities is configured to be separated by quilting lines;

[0017] A sealing strip is provided on at least one of the quilting threads on the back and / or shoulder of the filling part, the ventilation hole includes a second through hole penetrating the sealing strip, and the air inside the filling part is constructed to flow to the gap between the filling part and the surface layer at least through the second through hole.

[0018] In one embodiment of the present disclosure, the width of the sealing strip is in the range of 5 mm to 20 mm; and the diameter of the second through hole is in the range of 0.5 mm to 2 mm.

[0019] In one embodiment of the present disclosure, at least two sealing strips are provided on at least two of the quilting lines, and the second through holes on each of the sealing strips are configured to be symmetrically distributed about the back midline of the down jacket.

[0020] The present disclosure provides a down jacket, comprising a back piece, wherein the back piece comprises a surface layer and a filling part, wherein the surface layer is configured to be arranged on the outer side surface of the back piece; the filling part is configured to be arranged inside the back piece and comprises a first cloth layer, a second cloth layer and a down layer, wherein the first cloth layer and the second cloth layer are configured to be divided into at least two filling cavities by quilting lines, and the down layer is configured to be located in the filling cavities; a ventilation opening is provided at the back position of the surface layer, and ventilation holes are provided at positions of the filling part corresponding to the ventilation openings, and air inside the filling part is configured to be discharged to the outside through the ventilation holes and the ventilation openings.

[0021] Thus, when the user is wearing the down jacket of the present invention, when the user is in a high temperature environment or a relatively intense activity state, and sweats on the back, side and armpits, the air mixed with sweat can pass through the air holes on the filling part and the air holes on the surface layer and be discharged to the outside, so that the sweat on the surface of the human skin can be discharged in time, reducing the stuffiness of the human body, thereby effectively improving the wearing comfort of the user. Moreover, since the sweat on the surface of the skin can be discharged in time when wearing the down jacket of the present invention, the humidity on the surface of the human skin can be effectively reduced, and a large amount of body heat can be prevented from being transferred to the surrounding air through the down jacket after the user leaves the high temperature environment or stops the intense exercise, so as to prevent the human body temperature from dropping rapidly, causing the user to catch a cold, etc.

[0022] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0024] Figure 1 is a schematic diagram of the back side of a down jacket provided by an embodiment of the present disclosure;

[0025] Figure 2 is a cross-sectional schematic diagram of a down jacket provided by an embodiment of the present disclosure;

[0026] Figure 3 is a schematic diagram of the back interior of a down jacket provided by an embodiment of the present disclosure;

[0027] Figure 4 is an enlarged schematic diagram of the back interior of a down jacket provided by an embodiment of the present disclosure;

[0028] Figure 5It is a schematic diagram of the back portion of the down jacket provided in an embodiment of the present disclosure.

[0029] Figures 1 to 5 The corresponding relationship between the component names and reference numerals is as follows:

[0030] 1. Surface layer; 2. Filling part; 21. First cloth layer; 22. Second cloth layer; 23. Down layer; 24. Filling cavity; 25. Quilting thread; 31. Breathable port; 32. Breathable mesh; 4. Breathable hole; 41. First through hole; 42. Second through hole; 43. Pressing area; 44. Sealing strip; 51. Shielding part; 52. Ventilation port. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present disclosure. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values.

[0032] Many specific details are set forth in the following description to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present disclosure, so the present disclosure is not limited to the specific implementation disclosed below. Techniques, methods, and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be considered as part of the specification.

[0033] The terms used in one or more embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of the present disclosure. The singular forms of "a", "said" and "the" used in one or more embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of the present disclosure refers to and includes any or all possible combinations of one or more associated listed items.

[0034] It should be understood that, although the terms first, second, etc. may be used to describe various information in one or more embodiments of the present disclosure, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of the present disclosure, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determination". In this article, "upper", "lower", "front", "back", "left", "right", etc. are only used to indicate the relative position relationship between the relevant parts, rather than to limit the absolute position of these relevant parts. In this article, "equal", "same", etc. are not strictly mathematical and / or geometrical limitations, but also include errors that can be understood by those skilled in the art and allowed by manufacturing or use. Unless otherwise specified, the numerical range herein includes not only the entire range within its two endpoints, but also includes several sub-ranges contained therein.

[0035] The present disclosure provides a down jacket, comprising a back piece, wherein the back piece comprises a surface layer and a filling part, wherein the surface layer is configured to be arranged on the outer side surface of the back piece; the filling part is configured to be arranged inside the back piece and comprises a first cloth layer, a second cloth layer and a down layer, wherein the first cloth layer and the second cloth layer are configured to be divided into at least two filling cavities by quilting lines, and the down layer is configured to be located in the filling cavities; a ventilation opening is provided at the back position of the surface layer, and ventilation holes are provided at positions of the filling part corresponding to the ventilation openings, and air inside the filling part is configured to be discharged to the outside through the ventilation holes and the ventilation openings.

[0036] Thus, when the user is wearing the down jacket of the present invention, when the user is in a high temperature environment or a relatively intense activity state, and sweats on the back, side and armpits, the air mixed with sweat can pass through the air holes on the filling part and the air holes on the surface layer and be discharged to the outside, so that the sweat on the surface of the human skin can be discharged in time, reducing the stuffiness of the human body, thereby effectively improving the wearing comfort of the user. Moreover, since the sweat on the surface of the skin can be discharged in time when wearing the down jacket of the present invention, the humidity on the surface of the human skin can be effectively reduced, and a large amount of body heat can be prevented from being transferred to the surrounding air through the down jacket after the user leaves the high temperature environment or stops the intense exercise, so as to prevent the human body temperature from dropping rapidly, causing the user to catch a cold, etc.

[0037] For ease of understanding, refer to Figures 1 to 5 , the specific structure and working principle of the down jacket disclosed in the present invention are explained in detail in combination with an embodiment.

[0038] like Figures 1 to 4As shown, the present disclosure provides a down jacket, including a back piece, wherein the back piece includes a surface layer 1 and a filling part 2, the surface layer 1 is constructed to be arranged on the outer side of the back piece; the filling part 2 is constructed to be arranged inside the back piece, and includes a first cloth layer 21, a second cloth layer 22 and a down layer 23, the first cloth layer 21 and the second cloth layer 22 are constructed to be divided into at least two filling cavities 24 by quilting lines 25, and the down layer 23 is constructed to be in the filling cavity 24; a ventilation port 31 is arranged at the back position of the surface layer 1, and a ventilation hole 4 is arranged at a position of the filling part 2 corresponding to the ventilation port 31, and the air inside the filling part 2 is constructed to be discharged to the outside through the ventilation hole 4 and the ventilation port 31.

[0039] Thus, when the user is wearing the down jacket of the present invention, when the user is in a high temperature environment or in a relatively intense activity state, and sweat is produced in the back, side and armpits, the air mixed with sweat can pass through the air holes 4 on the filling part 2 and the air holes 31 on the surface layer 1 and be discharged to the outside, so that the sweat on the surface of the human skin can be discharged in time, reducing the stuffiness of the human body, thereby effectively improving the wearing comfort of the user. Moreover, since the sweat on the surface of the skin can be discharged in time when wearing the down jacket of the present invention, the humidity on the surface of the human skin can be effectively reduced, and a large amount of body heat can be prevented from being transferred to the surrounding air through the down jacket after the user leaves the high temperature environment or stops the intense exercise, so as to prevent the human body temperature from dropping rapidly, causing the user to catch a cold, etc.

[0040] It is understood that in one embodiment of the present disclosure, the first fabric layer 21 and the second fabric layer 22 can both be lining fabrics, that is, the lining fabrics are used to surround the filling cavity 24, and then an inner layer is arranged inside the filling part 2 to fit the skin. In another embodiment of the present disclosure, the first fabric layer 21 can be lining fabric, and the second fabric layer 22 directly serves as the inner layer that fits the skin.

[0041] like Figure 2 As shown, in one embodiment of the present disclosure, the back piece can be used only for the upper part of the back area of ​​the down jacket, or can be applied to the entire back area. In addition to the back piece, the down jacket of the present disclosure can also include a front left piece, a front right piece, a left side piece, a right side piece and other parts for surrounding the surface of the user's torso, as well as other parts such as sleeve pieces, collar pieces or hat pieces. The above parts can refer to the existing down jacket structure and will not be repeated here.

[0042] like Figure 5As shown, in one embodiment of the present disclosure, a breathable mesh 32 is provided at a position corresponding to the vent 31 on the inner side of the back of the surface layer 1. By providing the breathable mesh 32 at a position corresponding to the vent 31 on the inner side of the back of the surface layer 1, a large amount of air can be prevented from flowing inward from the vent 31, and the vent 31 can be prevented from being directly connected to the outside world, resulting in excessive heat flowing outward. The breathable mesh 32 can block the rapid flow of air without significantly affecting the outward flow of water vapor, thereby effectively ensuring the sweat discharge effect of the down jacket of the present disclosure.

[0043] like Figure 1 As shown, in one embodiment of the present disclosure, a shielding portion 51 is provided on the air opening 31; a vent 52 is provided below the shielding portion 51, and the vent 52 is connected to the air opening 31; the shielding portion 51 is constructed to fit with the breathable mesh 32 and close the vent 52 when the back piece is flat, and to be at least partially separated from the breathable mesh 32 and open the vent 52 when in an active state.

[0044] In this way, when the user is in a relatively static posture such as sitting or lying, the vent 52 is in a closed state or the opening is small, and the air flow from the inside of the filling cavity 24 close to the human body to the outside is relatively not smooth, which can prevent a large amount of heat loss from the user's body surface in a static state and effectively ensure the warmth retention performance.

[0045] When the user is walking, climbing or other activities, the vent is open and has a large opening. After the user sweats on the back, side and underarms, the air mixed with sweat can pass through the air holes 4 on the filling part 2, the air holes 31 and the vents 52 on the surface layer 1 and be discharged to the outside, so as to discharge the sweat on the surface of the human skin as soon as possible, reduce the stuffiness of the human body, and effectively improve the wearing comfort of the user. In addition, since the down jacket of the present disclosure can discharge the sweat on the surface of the skin in time, the humidity on the surface of the human skin can be effectively reduced, so as to avoid the large amount of body heat from being transferred to the surrounding air through the down jacket after the user leaves the high temperature environment or stops the intense exercise, so as to avoid the rapid decrease of the body temperature and cause the user to catch a cold.

[0046] The structure of the air vent 4 can be set as required, such as Figure 2 and Figure 4 As shown, in one embodiment of the present disclosure, at least one pressing area 43 is provided on at least one filling cavity 24, and the corresponding first fabric layer 21 and second fabric layer 22 of the pressing area 43 are constructed as an integrated structure; the air vent 4 includes a first through hole 41 penetrating through the pressing area 43, and the air on the inner side of the filling part 2 is constructed to flow to the gap between the filling part 2 and the surface layer 1 at least through the first through hole 41.

[0047] It is understandable that in the manufacturing process of the down jacket disclosed in the present invention, the first cloth layer 21 and the second cloth layer 22 corresponding to the pressing area 43 are first processed into an integrated structure by using a hot press or other equipment, and then the first through hole 41 is processed in the pressing area 43, and the down layer 23 is filled into the filling cavity 24. Since the first cloth layer 21 and the second cloth layer 22 corresponding to the pressing area 43 are an integrated structure, the first through hole 41 penetrating through the pressing area 43 can be formed to facilitate the air inside the filling part 2 to flow through the first through hole 41 to the gap between the filling part 2 and the surface layer 1, and then flow to the outside.

[0048] like Figure 2 and Figure 4 As shown, in one embodiment of the present disclosure, the pressing area 43 is constructed to be circular; the first through hole 41 is arranged in the central area of ​​the pressing area 43. In this way, the processing difficulty of the pressing area 43 and the first through hole 41 can be effectively reduced, making the processing of the down jacket of the present disclosure more convenient. In another embodiment of the present disclosure, the pressing area 43 can also be other shapes, which are not limited here.

[0049] like Figure 2 and Figure 4 As shown, in one embodiment of the present disclosure, at least two pressing areas 43 are provided on at least two filling cavities 24, and the first through holes 41 on each pressing area 43 are configured to be symmetrically distributed about the back midline of the down jacket. Since at least two filling cavities 24 are provided with at least two pressing areas 43, and the first through holes 41 on each pressing area 43 are symmetrically distributed about the back midline of the down jacket, it can be ensured that all parts of the user's back can be sweated evenly, preventing poor sweating on one side of the user, and improving the user's wearing comfort.

[0050] In one embodiment of the present disclosure, the diameter of the pressing area 43 ranges from 10mm to 40mm; the aperture of the first through hole 41 ranges from 0.5mm to 2mm. According to actual tests, when the diameter of the first through hole 41 ranges from 0.5mm to 2mm, it can effectively meet the user's perspiration needs without causing a large amount of heat loss, and effectively achieve a balance between the warming function and the perspiration function. Specifically, the diameter of the pressing area 43 can be selected to be 20mm, and the diameter of the first through hole 41 can be selected to be 1mm. According to actual tests, when the diameter of the first through hole 41 ranges from 1mm, both the warming function and the perspiration function are relatively good.

[0051] In another embodiment of the present disclosure, Figure 2 and Figure 5As shown, in one embodiment of the present disclosure, the filling portion 2 includes a plurality of filling cavities 24, and each of the filling cavities 24 is constructed to be separated by a quilting line 25; a sealing strip 44 is provided on at least one quilting line 25 on the back and / or shoulder of the filling portion 2, and the air vent 4 includes a second through hole 42 penetrating through the sealing strip 44, and the air inside the filling portion 2 is constructed to flow to the gap between the filling portion 2 and the surface layer 1 at least through the second through hole 42.

[0052] It can be understood that in the manufacturing process of the down jacket disclosed in the present invention, after the quilting line 25 is sewn, the sealing strip 44 can be pressed onto the quilting line 25 using equipment such as a heat press, and then a second through hole 42 can be processed on the sealing strip 44 to facilitate the air inside the filling part 2 to flow through the second through hole 42 to the gap between the filling part 2 and the surface layer 1, and then flow to the outside.

[0053] It is understandable that in the down jacket of the present invention, a first through hole 41 can be provided on the pressing area 43 and a second through hole 42 can be provided on the sealing strip 44 to improve the perspiration performance of the down jacket of the present invention and ensure effective perspiration everywhere in the up and down directions.

[0054] like Figure 4 As shown, in one embodiment of the present disclosure, the width of the sealing strip 44 ranges from 5mm to 20mm; the aperture of the second through hole 42 ranges from 0.5mm to 2mm. According to actual tests, when the diameter of the second through hole 42 ranges from 0.5mm to 2mm, it can effectively meet the user's perspiration needs without causing a large amount of heat loss, and effectively achieve a balance between the warming function and the perspiration function. Specifically, the width of the sealing strip 44 can be selected to be 10mm, and the diameter of the second through hole 42 can be selected to be 1mm. According to actual tests, when the diameter of the second through hole 42 ranges from 1mm, both the warming function and the perspiration function are relatively good.

[0055] Furthermore, in one embodiment of the present disclosure, at least two sealing strips 44 are provided on at least two quilting lines 25, and the second through holes 42 on each sealing strip 44 are configured to be symmetrically distributed about the back midline of the down jacket. Since at least two sealing strips 44 are provided on at least two quilting lines 25, and the second through holes 42 on each sealing strip 44 are symmetrically distributed about the back midline of the down jacket, it can be ensured that all parts of the user's back can be uniformly perspired, preventing poor perspiration on one side of the user, and improving the user's wearing comfort.

[0056] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A down jacket, It is characterized in that The invention comprises a back piece, wherein the back piece comprises: A surface layer (1), the surface layer (1) being configured to be disposed on the outer side of the back sheet; A down filling portion (2), the down filling portion (2) being configured to be arranged inside the back sheet, and comprising a first fabric layer (21), a second fabric layer (22) and a down layer (23), the first fabric layer (21) and the second fabric layer (22) being configured to be divided into at least two down filling cavities (24) by means of quilting threads (25), and the down layer (23) being configured to be located inside the down filling cavity (24); The back of the surface layer (1) is provided with a ventilation opening (31), the filling portion (2) is provided with a ventilation hole (4) at a position corresponding to the ventilation opening (31), and the air inside the filling portion (2) is configured to be discharged to the outside through the ventilation hole (4) and the ventilation opening (31).

2. The down jacket according to claim 1, It is characterized in that A breathable mesh (32) is provided on the inner side of the back of the surface layer (1) at a position corresponding to the breathable opening (31).

3. The down jacket according to claim 2, It is characterized in that The ventilation opening (31) is covered with a shielding portion (51); a ventilation opening (52) is provided below the shielding portion (51), and the ventilation opening (52) is communicated with the ventilation opening (31); the shielding portion (51) is constructed to be in contact with the ventilation mesh (32) when the back sheet is in a flat state, and to close the ventilation opening (52); and to be at least partially separated from the ventilation mesh (32) when in an active state, and to open the ventilation opening (52).

4. The down jacket according to claim 1, It is characterized in that At least one of the filling cavities (24) is provided with at least one pressing area (43), and the first cloth layer (21) and the surface layer (1) corresponding to the pressing area (43) are constructed to form an integrated structure; the air vents (4) include a first through hole (41) penetrating the pressing area (43), and the air inside the filling portion (2) is constructed to flow to the gap between the filling portion (2) and the surface layer (1) at least through the first through hole (41).

5. The down jacket according to claim 4, It is characterized in that The pressing area (43) is constructed to be circular; the first through hole (41) is arranged in the central area of ​​the pressing area (43).

6. The down jacket according to claim 4, It is characterized in that At least two of the filling cavities (24) are each provided with at least two pressing areas (43), and the first through holes (41) on each of the pressing areas (43) are constructed to be symmetrically distributed about the back midline of the down jacket.

7. The down jacket according to claim 4, It is characterized in that The diameter of the pressing area (43) ranges from 10 mm to 40 mm; the diameter of the first through hole (41) ranges from 0.5 mm to 2 mm.

8. The down jacket according to claim 1, It is characterized in that The filling portion (2) comprises a plurality of filling cavities (24), and each of the filling cavities (24) is structured to be separated by quilting lines (25); A sealing strip (44) is provided on at least one of the quilting lines (25) on the back and / or shoulder of the filling portion (2); the air vent (4) comprises a second through hole (42) penetrating the sealing strip (44); and the air inside the filling portion (2) is configured to flow at least through the second through hole (42) to the gap between the filling portion (2) and the surface layer (1).

9. The down jacket according to claim 8, It is characterized in that The width of the sealing strip (44) ranges from 5 mm to 20 mm; the diameter of the second through hole (42) ranges from 0.5 mm to 2 mm.

10. The down jacket according to claim 8, It is characterized in that At least two of the sealing strips (44) are provided on at least two of the quilting lines (25), and the second through holes (42) on each of the sealing strips (44) are constructed to be symmetrically distributed about the back midline of the down jacket.

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