CN113519923A

CN113519923A - Warm-keeping down jacket with self-heating function

Info

Publication number: CN113519923A
Application number: CN202110929555.4A
Authority: CN
Inventors: 张继飞; 姚秀红
Original assignee: Hangzhou Qinghuo Trading Co ltd
Current assignee: Hangzhou Qinghuo Trading Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-10-22

Abstract

The invention belongs to the field of garment design, and particularly relates to a warm-keeping down jacket with a self-heating function, aiming at the problem that the down jacket is not easy to clean, the warm-keeping down jacket comprises a down jacket body, wherein a second zipper is arranged on the inner bottom layer of the down jacket body, the down jacket body is made of a down layer, the outer wall of one side of the down layer is movably connected with a waterproof layer, the outer wall of the other side of the down layer is movably connected with a heating fiber layer, the down layer can be completely stripped by opening the second zipper, the down layer is made of high-loft white goose down, the down filling amount reaches 100g per piece, the down content reaches ninety percent or more, a jacket wrapping the white goose down is made of high-count high-density pure cotton fabric, and the waterproof layer is made of a high-count high-density fabric layer. The down jacket is provided with the second zipper and the down layer, so that the down layer can be taken out when the down jacket needs to be cleaned, the whole down jacket is easy to clean, and the service life of the down layer is prolonged.

Description

Warm-keeping down jacket with self-heating function

Technical Field

The invention relates to the field of garment design, in particular to a warm-keeping down jacket with a spontaneous heating function.

Background

The down jacket is a jacket filled with down filling, and has a huge and mellow appearance. The down jacket generally has more than half of the amount of the duck down, and meanwhile, some fine feathers can be mixed, the duck down is cleaned and disinfected at high temperature, and then the down jacket is filled in clothes.

Down is the best natural material for human warming to date, and down jackets are the main products in the down industry, filled with down fillers. In the process of changing down jacket products to fashion, leisure, sports, individuation and the like, the updating and the updating of related fabric auxiliary material products are also promoted, wherein the grade and the level of the fabric products play a vital role in the down jacket.

The down jacket can basically select three methods of paid dry cleaning, machine washing and hand washing when needing to be cleaned, but the dry cleaning can not ensure the cleanness of clothes, and the machine washing and the hand washing can make down wet when meeting water and can recover the fluffy degree of the down after being dried for a plurality of days, and the down is difficult to clean when not having enough sunlight, and the down can face the condition of short service life caused by down running, deformation and the like after being cleaned for a plurality of times.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a thermal down jacket with a spontaneous heating function.

The invention provides a warm-keeping down jacket with a self-heating function, which comprises a down jacket body, wherein a second zipper is arranged on the inner bottom layer of the down jacket body, the down jacket body is made of a down layer, the outer wall of one side of the down layer is movably connected with a waterproof layer, the outer wall of the other side of the down layer is movably connected with a heating fiber layer, the down layer can be completely stripped by opening the second zipper, the down layer is made of high-fluffiness white goose down, the down filling amount reaches 100g, the down content reaches ninety percent or more, and a jacket wrapping the white goose down is made of high-count high-density pure cotton fabric.

Preferably, the waterproof layer comprises a high-count high-density fabric layer, and a PTFE waterproof membrane is laid on the outer side of the high-count high-density fabric layer.

Preferably, the down jacket body comprises sleeves and a collar, and a hat is fixedly connected to the outer layer of the collar.

Preferably, the inner layer of the bottom ends of the sleeves is fixedly connected with a threaded cuff, the outer layer of the bottom ends of the sleeves is provided with a third airtight zipper, the inner layer of the bottom ends of the sleeves is provided with a third zipper, the third zipper is positioned right below the third airtight zipper, the third zipper is opened and can be in contact with a down feather layer positioned inside the down jacket body, and the bottom ends of the sleeves can be in a closed state by pulling the third airtight zipper.

Preferably, the outer layer of the collar is provided with a positioning button, the positioning button is located below the side of the cap, the side face of the collar is fixedly connected with a wind shield, the outer wall of one side of the wind shield is fixedly connected with a positioning buttonhole, the specification of the positioning buttonhole is matched with that of the positioning button, and the position of the wind shield can be determined by overlapping the positioning buttonhole and the positioning button.

Preferably, the outer ornamental strip that is provided with in front of down coat body, the ornamental strip respectively sets up one in the outer left and right sides in front of down coat body, the ornamental strip is including high reflectivity phosphor strip and decoration zip fastener, high reflectivity phosphor strip is located and decorates the zip fastener under, can shelter from high reflectivity phosphor strip completely when decorating the zip fastener and pulling up.

Preferably, the outer layer of the front surface of the down jacket body is provided with a pocket, the pockets are respectively arranged on the left side and the right side of the outer layer of the front surface of the down jacket body, the pockets are located under the decorative strips, the center of the front surface of the down jacket body is provided with an airtight zipper, and the airtight zipper divides the front piece of the down jacket body into a left piece and a right piece.

Preferably, the outer wall of the bottom end of the down jacket body is closely provided with a second airtight zipper, and the down jacket body is connected with a sleeping bag tail through the second airtight zipper.

The beneficial effects of the invention are as follows:

1. the warm-keeping down jacket with the self-heating function basically selects three methods of paid dry cleaning, machine washing and hand washing when the down jacket needs to be cleaned under normal conditions, but the dry cleaning can not ensure the cleaning degree of clothes, and the machine washing and the hand washing can ensure the fluffiness degree of down feather which is wetted by water and can be recovered after being aired for a plurality of days in the cleaning process, so the down jacket is difficult to clean when insufficient sunlight exists, and the down feather can be subjected to the conditions of down feather running, deformation and the like to shorten the service life after being cleaned for a plurality of times, therefore, the problem is solved by the mode of separating the inner container in the prior art, but the inner container and the outer layer of the prior down jacket are basically connected through the zipper, so the inner container is in direct contact with a human body, the inner container is easy to be dirty and cannot be cleaned, and the down jacket is directly sealed in the outer layer of the down jacket by the arrangement of the second zipper and the down feather layer, the down layer can be taken out through the second zipper during cleaning, the waterproof layer and the heating fiber layer are wrapped on the two sides of the down layer, the down layer is not in direct contact with the outside and a human body, the cleanness degree of the down layer is guaranteed, the outer layer of clothes after the down layer is removed is easy to clean and dry, the down layer is simple in installation method, the second zipper is opened, the down layer is laid to be smooth, the down layer of the sleeve part is pulled to be smooth through the third zipper at the cuffs, the third zipper and the second zipper are pulled, the service life of the down layer is prolonged when the whole down garment is easy to clean, and long-term wearing experience of a user is guaranteed.

2. The warm-keeping down jacket with the self-heating function is also suitable for users who like outdoor activities by arranging the third airtight zipper, the second airtight zipper and the tail of the sleeping bag, the second airtight zipper at the tail end of the down jacket plays a decorative role and can be connected with the tail of the sleeping bag equipped with the down jacket, the tail of the sleeping bag is connected, then the third airtight zipper is pulled up, the sleeve openings are in a closed state, the down jacket can be changed into the sleeping bag with high warm-keeping property, the space with the sleeping bag can be saved for users who like outdoor activities and camping, the warm-keeping property of the down jacket cannot be lower than that of a high-quality sleeping bag, and similarly, for users who like to travel to live in a hotel, under the condition that the sanitary condition of the hotel is unknown, the down jacket can be changed into the sleeping bag for sleeping at night, and the close contact between a human body and a hotel bed is avoided, and the sleeping bag tail is small in volume and easy to carry, can not bring redundant encumbrance to users, and is suitable for being carried about when traveling.

3. This warm-keeping type down coat with spontaneous heating function, through being provided with airtight zip fastener, the airtight zip fastener of second, the airtight zip fastener of third and waterproof layer, the waterproof layer is formed by attaching the PTFE membrane on high count high density fabric layer surface, can prevent the water logging clothing, and make the spot be difficult for adhering to, it is easy clean, airtight zip fastener, the airtight zip fastener of second and the airtight zip fastener of third have the effect of complete separation, kneck including zip fastener and waterproof layer can both be tight silk seam, make water difficult in order to permeate, snow, rainy weather, forget to take the umbrella under, also need not worry too much, can regard down the down coat as interim raincoat to use, increase user's use experience, give the user very big sense of security.

4. This thermal-insulating type down coat with spontaneous heating function, through being provided with down layer and the fibrous layer that generates heat, the material is high fluffy white goose down in the down layer, it reaches every piece to fill the fine hair volume, the fine hair content reaches ninety percent and above, wherein the overcoat of parcel white goose down is high-count high density pure cotton fabric, can effectively absorb the moisture of white goose down, and can prevent white goose down run the fine hair, high-quality white goose down has good lock warm characteristic, and the fibrous layer that generates heat is the fibrous material of textile material synthetic, it can follow the heat of human body itself and absorb the heat, keep the existence of heat, make the heat difficult the giving out of, in order to maintain the warmth of health. The garment made of the heating fibers is soft, skin-friendly and strong in heat preservation performance, not only has the general performance of common textile materials, but also has the excellent characteristics of combining traditional natural fibers and superfine fibers, the whole fabric is smooth and skin-friendly in touch, and the down feather layer is matched with the heating fiber layer, so that the down jacket has the functions of perfect temperature locking and self-heating, meanwhile, the skin-friendly feeling in the down jacket is guaranteed, the perfect wearing experience is provided for a user, and the warm winter of the user is guaranteed.

5. This thermal-insulating type down coat with from spontaneous heating function through being provided with the wind-break piece, is located the wind-break piece of cap bottom side, can effectively shelter from neck and face in the big winter of cold wind, makes it not receive the injury of strong wind, under normal weather, fixes its opposite direction in the cap below, does not influence pleasing to the eye while also not bring the hindrance nature for the user, when wind is big, low temperature or act as the sleeping bag, fixes its positive direction in cap the place ahead again, can strengthen cold-proof effect.

6. This thermal-insulating type down coat with spontaneous heating function, through being provided with the high reflectivity phosphor strip and decorating the zip fastener, the bright messenger of high reflectivity phosphor strip absorbable day makes it demonstrate the gloomy and beautiful fluorescence colour evening, the user when the trip night, can open the zip fastener, make the high reflectivity phosphor strip expose in the air, increase the aesthetic property of clothing, or play the warning effect to passing vehicle and pedestrian, if feel too dazzling, can pull up the decoration zip fastener completely, the zip fastener can shelter from the bright light of high reflectivity phosphor strip completely, make the down coat return normal colour, decorate the zip fastener simultaneously and also play decorative effect to the down coat, make the down coat look down and beautifully.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

FIG. 1 is a schematic view of an overall structure of a thermal down jacket with a spontaneous heating function according to the present invention;

FIG. 2 is a schematic view of the overall internal structure of a thermal down jacket with a spontaneous heating function according to the present invention;

FIG. 3 is a schematic view of a structure of a box cuff of a thermal down jacket with a spontaneous heating function according to the present invention;

FIG. 4 is a schematic structural view of a collar and a hat of a case body of the thermal down jacket with a spontaneous heating function according to the present invention;

FIG. 5 is a schematic view of a material structure of a thermal down jacket with a spontaneous heating function according to the present invention;

FIG. 6 is a schematic view of a waterproof layer structure of a thermal down jacket with a spontaneous heating function according to the present invention;

fig. 7 is a schematic structural diagram of a high-reflectivity fluorescent strip of a thermal down jacket with a spontaneous heating function according to the present invention.

In the figure: 1. a down jacket body; 2. sleeves; 3. a collar; 4. a cap; 5. an airtight zipper; 6. decorating strips; 7. a pocket; 8. a second airtight zipper; 9. positioning the button; 10. a wind-shielding sheet; 11. positioning the buttonholes; 12. sleeping at the tail of the bag; 13. a second zipper; 101. a waterproof layer; 102. A down layer; 103. a heat-generating fiber layer; 1011. a PTFE membrane; 1012. a high count, high density fabric layer; 201. a third airtight zipper; 202. a third zipper; 203. threaded cuffs 601, high reflectivity phosphor strips; 602. decorating the zipper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-7, a warm-keeping down jacket with a spontaneous heating function comprises a down jacket body 1, wherein a second zipper 13 is arranged on the bottom layer inside the down jacket body 1, the down jacket body 1 is made of a down layer 102, a waterproof layer 101 is movably connected to the outer wall of one side of the down layer 102, a heating fiber layer 103 is movably connected to the outer wall of the other side of the down layer 102, the down layer 102 can be completely stripped by opening the second zipper 13, the down layer 102 is made of high-fluffiness white goose down, the down filling amount reaches 100g, the down content reaches ninety percent or more, a jacket wrapping the white goose down is made of high-count high-density pure cotton fabric, moisture of the white goose down can be effectively absorbed, the white goose down can be prevented from running, the white goose down has excellent temperature locking characteristics, warm wearing experience is provided for a user, and the second zipper 13 and the down layer 102 are arranged, the down layer 102 is directly sealed inside the outer layer of the down jacket, the down layer 102 can be taken out through the second zipper when being cleaned, the waterproof layer 101 and the heating fiber layer 103 are wrapped on the two sides of the down layer 102, the down layer 102 is not in direct contact with the outside and a human body, the cleanness degree of the down layer is guaranteed, the service life of the down layer is prolonged while the whole down jacket is easy to clean, the long-term wearing experience of a user is guaranteed, the waterproof layer 101 is formed by attaching a PTFE (polytetrafluoroethylene) film to the surface of a high-count high-density fabric layer, clothes can be prevented from being wetted by water, stains are not easy to attach, the down jacket is easy to clean, the heating fiber layer 103 is made of synthetic fibers made of textile materials, heat can be absorbed from the heat of the human body, the existence of the heat is kept, the heat is not easy to be dissipated, and the body is kept warm. The garment made of the heating fibers is soft, skin-friendly and strong in heat preservation performance, not only has the general performance of common textile materials, but also has the excellent characteristics of combining traditional natural fibers and superfine fibers, the whole fabric is smooth and skin-friendly in touch, and the down feather layer is matched with the heating fiber layer, so that the down jacket has the functions of perfect temperature locking and self-heating, meanwhile, the skin-friendly feeling in the down jacket is guaranteed, the perfect wearing experience is provided for a user, and the warm winter of the user is guaranteed.

In the present invention, the waterproof layer 101 is made of a high-count high-density fabric layer 1012, and a PTFE waterproof film 1011 is laid on the outer side of the high-count high-density fabric layer 1012.

In the invention, the down jacket body 1 comprises sleeves 2 and a collar 3, and a hat 4 is fixedly connected with the outer layer of the collar 3.

According to the down jacket, the inner layer at the bottom end of each sleeve 2 is fixedly connected with a threaded cuff 203, the outer layer at the bottom end of each sleeve 2 is provided with a third airtight zipper 201, the inner layer at the bottom end of each sleeve 2 is provided with a third zipper 202, the third zipper 202 is positioned right below the third airtight zipper 201, the third zipper 202 is opened to be in contact with the down feather layer 102 positioned in the down jacket body 1, the third airtight zipper 201 is pulled up to enable the bottom end of each sleeve 2 to be in a closed state, the second zipper 13 is opened to lay the down feather layer 102 flat, the down feather layer 102 at the sleeve part is pulled flat through the third zipper 201 at the cuff, and the third zipper 201 and the second zipper 13 are pulled up, so that the down feather layer 102 can be installed more simply.

According to the invention, the positioning button 9 is arranged on the outer layer of the collar 3, the positioning button 9 is positioned below the side of the hat 4, the side face of the collar 3 is fixedly connected with the wind-shielding sheet 10, the outer wall of one side of the wind-shielding sheet 10 is fixedly connected with the positioning button hole 11, the specification of the positioning button hole 11 is matched with that of the positioning button 9, the position of the wind-shielding sheet 10 can be determined by superposing the positioning button hole 11 and the positioning button 9, the wind-shielding sheet 10 positioned on the side face of the bottom of the hat can effectively shield the neck and the face in cold weather, so that the neck and the face are not damaged by the strong wind, the neck and the face are fixed below the hat in the opposite direction in normal weather, the appearance is not influenced, the user is not affected, and the heat insulation effect can be enhanced by fixing the forward direction of the neck and the face in the cold weather or serving as a sleeping bag.

In the invention, the outer layer of the front surface of the down jacket body 1 is provided with the decorative strip 6, the decorative strips 6 are respectively arranged at the left side and the right side of the outer layer of the front surface of the down jacket body 1, the decorative strip 6 comprises the high-reflectivity fluorescent strip 601 and the decorative zipper 602, the high-reflectivity fluorescent strip 601 is positioned under the decorative zipper 602, the high-reflectivity fluorescent strip 601 can be completely shielded when the decorative zipper 602 is pulled up, the high-reflectivity fluorescent strip 601 can absorb the brightness of the daytime to ensure that the high-reflectivity fluorescent strip 601 presents a beautiful fluorescent color at night, when a user goes out at night, the decorative zipper 602 can be opened to ensure that the high-reflectivity fluorescent strip 601 is exposed in the air to improve the aesthetic property of the jacket, or a warning effect is exerted on passing vehicles and pedestrians, if the decorative zipper 602 is too obvious, the decorative zipper 602 can be completely pulled up to ensure that the brightness of the high-reflectivity fluorescent strip 601 can be completely shielded by the decorative zipper 602 to ensure that the down jacket returns to a normal color, meanwhile, the zipper plays a role in decorating the down jacket, so that the down jacket looks low and attractive.

According to the invention, the pocket 7 is arranged on the outer layer of the front surface of the down jacket body 1, the pocket 7 is respectively arranged on the left side and the right side of the outer layer of the front surface of the down jacket body 1, the pocket 7 is positioned under the decorative strip 6, the airtight zipper 5 is arranged in the center position of the front surface of the down jacket body 1, the airtight zipper 5 divides the front piece of the down jacket body 1 into a left piece and a right piece, the airtight zipper 5, the second airtight zipper 8 and the third airtight zipper 202 have the complete separation effect, the airtight zipper can be tightly sewn with the interface of the waterproof layer 101, so that water is difficult to permeate, and the down jacket does not worry too much in snow, rain and umbrella forgetting conditions, can be used as a temporary raincoat, so that the use experience of a user is increased, and the user has great safety.

In the invention, the outer wall of the bottom end of the down jacket body 1 is tightly provided with the second airtight zipper 8, the down jacket body 1 is connected with the sleeping bag tail 12 through the second airtight zipper 8, the second airtight zipper 8 positioned at the tail end of the down jacket plays a role in decoration and can be used for connecting the sleeping bag tail 12 equipped for the down jacket, the sleeping bag tail 12 is connected, and then the third airtight zipper 202 is pulled up to enable the sleeve openings to be in a closed state, so that the down jacket can be changed into a sleeping bag with high heat preservation property, a space with the sleeping bag can be saved for users who like outdoor sports and camping, the heat preservation property of the sleeping bag can not be lower than that of a high-quality sleeping bag, and similarly, for users who like travelling in hotels, under the condition that the sanitation condition of the hotels is not certain, the sleeping bag can be changed into the sleeping bag for sleeping at night, the close contact between the human body and the hotel beds is avoided, and the volume of the sleeping bag tail 12 is small and easy to carry, and can not bring redundant sense of encumbrance to the users, is suitable for being carried about when traveling.

The working principle is as follows: when a user wears the down jacket, the user can wear the hat 4 and pull the collar 3 up and fix the collar 3 with the wind-blocking piece 10 in the positive direction to prevent the face and the neck from being damaged by cold wind, wherein the two sides of the hat are respectively provided with one pocket 7 for storing articles, the decoration strips 6 at the two sides can select to leak or shield the high-reflectivity fluorescent strips 601 according to personal preference so as to select the style of the garment, when the user wears the down jacket, the high-quality down feather layer 102 effectively keeps the temperature and is matched with the heat-absorbing, heat-preserving and skin-friendly heating fiber layer 103, so that the down jacket has the effects of self-heating and heat preservation, the cold resistance degree of the down jacket is increased, the outermost waterproof layer 101 is matched with the airtight zipper 5 through the PTFE film 1012 and the high-count high-density fabric layer, the down jacket has the effects of water resistance and dirt resistance, the down jacket can be used as a temporary raincoat in severe weather, and the user can not worry too much in severe weather such as rain, snow and the like, for the users who like travelling and camping, the space with the sleeping bag can be saved by the existence of the sleeping bag tail 12, and for the users who live in a hotel, the down jacket can be directly changed into the sleeping bag to sleep on the hotel bed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a warm-keeping type down coat with spontaneous heating function, includes down coat body (1), its characterized in that, be provided with second zip fastener (13) on the inside bottom of down coat body (1), the material of down coat body (1) includes down layer (102), one side outer wall swing joint of down layer (102) has waterproof layer (101), the other side outer wall swing joint of down layer (102) has heating fiber layer (103), opens second zip fastener (13) can peel down layer (102) completely, the material is high fluffy degree white goose down in down layer (102), and the volume of filling down reaches 100g every, and the content of down reaches ninety percent and above, and wherein the overcoat that wraps up white goose down is high count high density pure cotton surface fabric.

2. The thermal down jacket with the spontaneous heating function as claimed in claim 1, wherein the waterproof layer (101) comprises a high-count high-density fabric layer (1012), and a PTFE waterproof film (1011) is laid on the outer side of the high-count high-density fabric layer (1012).

3. The warm-keeping down jacket with the spontaneous heating function as claimed in claim 1, wherein the down jacket body (1) comprises sleeves (2) and a collar (3), and a hat (4) is fixedly connected to the outer layer of the collar (3).

4. The warm-keeping down jacket with the self-heating function as claimed in claim 1, wherein a threaded cuff (203) is fixedly connected to the inner layer of the bottom end of each sleeve (2), a third airtight zipper (201) is arranged on the outer layer of the bottom end of each sleeve (2), a third zipper (202) is arranged on the inner layer of the bottom end of each sleeve (2), the third zipper (202) is located right below the third airtight zipper (201), the down jacket (102) located inside the down jacket body (1) can be contacted by opening the third zipper (202), and the bottom end of each sleeve (2) can be in a closed state by pulling up the third airtight zipper (201).

5. The warm-keeping down jacket with the self-heating function according to claim 4, wherein a positioning button (9) is arranged on the outer layer of the collar (3), the positioning button (9) is located below the side of the hat (4), a wind shield sheet (10) is fixedly connected to the side face of the collar (3), a positioning button hole (11) is fixedly connected to the outer wall of one side of the wind shield sheet (10), the specification of the positioning button hole (11) is matched with that of the positioning button (9), and the position of the wind shield sheet (10) can be determined by overlapping the positioning button hole (11) and the positioning button (9).

6. The warm-keeping down jacket with the self-heating function according to claim 4, wherein the outer layer of the front surface of the down jacket body (1) is provided with a decorative strip (6), the decorative strip (6) is arranged on each of the left side and the right side of the outer layer of the front surface of the down jacket body (1), the decorative strip (6) comprises a high-reflectivity fluorescent strip (601) and a decorative zipper (602), the high-reflectivity fluorescent strip (601) is positioned under the decorative zipper (602), and the high-reflectivity fluorescent strip (601) can be completely shielded when the decorative zipper (602) is pulled up.

7. The warm-keeping down jacket with the self-heating function as claimed in claim 1, wherein a pocket (7) is arranged on the outer layer of the front surface of the down jacket body (1), the pocket (7) is respectively arranged on the left side and the right side of the outer layer of the front surface of the down jacket body (1), the pocket (7) is located under the decorative strip (6), an airtight zipper (5) is arranged in the center of the front surface of the down jacket body (1), and the airtight zipper (5) divides the front piece of the down jacket body (1) into a left piece and a right piece.

8. The warm-keeping down jacket with the spontaneous heating function as claimed in claim 1, wherein a second airtight zipper (8) is closely arranged on the outer wall of the bottom end of the down jacket body (1), and the down jacket body (1) is connected with a sleeping bag tail (12) through the second airtight zipper (8).