Waterproof bag

Abstract

Provided is a waterproof bag that improves the user's feeling of use by ensuring waterproof performance to prevent water from entering the storage part during heavy rain or precipitation, and further suppressing the heat from accumulating in the storage part and the back surface due to sunlight. 【Solution means】The waterproof bag 1 has bag-shaped storage parts 10A, 10B, 10C with open ends, a bag body 10 whose outer peripheral surface is formed of a waterproof fabric 11A having waterproof properties, a waterproof fastener 2 that opens and closes the open end parts 10A1, 10C1 of the storage part, and a pair of shoulder belts 25 that are connected above and below the back of the bag body and attached to the shoulders of the user 6. The bag body is attached to the back via the pair of shoulder belts, and the open end parts 10A1, 10C1 are sealed with the waterproof fastener to prevent water from the outside from entering the storage part. The waterproof fabric has a white polyurethane film having light-shielding properties, and suppresses light from passing through to the storage part and the user in the use state.

Description

Technical Field

[0001] The present invention relates to a waterproof bag that has waterproof properties to prevent water from entering inside and also has light-shielding properties to block light.

Background Art

[0002] In recent years, due to the intense heat caused by global warming, the sea water temperature has been warmed, making clouds more likely to form, and it has become a problem that floods such as sudden heavy rain and precipitation often occur. When carrying a bag during such heavy rain or precipitation, there is a risk that water will enter the inside of the bag, and the contents stored in the bag may be damaged due to the inside of the bag being flooded. Therefore, in order to prevent the inside of the bag from being flooded during sudden heavy rain or precipitation, waterproof bags having waterproof performance have been intensively studied.

[0003] As such a waterproof bag, for example, in Patent Document 1 (conventional example), as shown in FIG. 9, there is provided a bag-shaped rucksack body 102 made of waterproof fabric, and a pair of left and right shoulder straps 103 connected to the upper and lower parts of the back surface portion 102B of the rucksack body 102. The opening of the rucksack body 102 is opened and closed by a waterproof fastener 107, and a disaster prevention type rucksack 100 is disclosed.

[0004] Also, it is described that nylon or polyester is used as the waterproof fabric of the rucksack body 102.

[0005] According to this disaster prevention type rucksack 100, at least the rucksack body 102 is made of waterproof fabric, and the opening of the rucksack body 102 is opened and closed by a waterproof fastener 107, so that water intrusion into the rucksack body 102 can be prevented, and the occurrence of problems such as the contents in the rucksack body 102 getting wet with water can be prevented.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in the disaster prevention type backpack 100 disclosed in Patent Document 1, although nylon or polyester materials are used as the fabric of the backpack body 102 to ensure waterproof performance, on a day with strong sunlight and high humidity such as a sweltering day, heat tends to accumulate inside and on the back of the backpack body 102, and there is room for improvement in the discomfort of the user.

[0008] In addition, since the backpack body 102 cannot block sunlight, there is a possibility that the contents will get sunburned or the user will also get sunburned.

[0009] The present invention has been made in view of the above circumstances, and while ensuring waterproof performance to prevent the accommodation part from being flooded during heavy rain or precipitation, further suppressing the accumulation of heat in the accommodation part and the back due to sunlight and the transmission of sunlight, The purpose is to provide a waterproof bag that improves the user's feeling of use and prevents the contents and the user from getting sunburned.

Means for Solving the Problems

[0010] The waterproof bag according to claim 1, which is made to solve the above problems, has a bag-shaped storage part with an open end, and a bag body whose outer peripheral surface is made of a waterproof fabric having waterproof properties. It also includes a waterproof fastener for opening and closing the open end of the storage part, and a pair of shoulder straps connected vertically on the back of the bag body and attached to the user's shoulders. In a usage state where the bag body is attached to the back via the pair of shoulder straps and the open end is sealed with the waterproof fastener to prevent water from the outside from entering the storage part, the waterproof fabric has a white polyurethane film with light-shielding properties. In the usage state, it reflects light from the outside with the white polyurethane film and suppresses light from passing through to the storage part and the user.

[0011] According to this waterproof bag, the waterproof fabric has a white polyurethane film with light-shielding properties. In the usage state, it reflects light from the outside with the white polyurethane film and suppresses light from passing through to the storage part and the user. Therefore, while ensuring the waterproof performance of suppressing water intrusion from the outside by the waterproof fabric, the light-shielding performance can suppress sunlight from passing through the bag body. For this reason, it can suppress the temperature of the storage part and the back of the bag body from rising due to sunlight passing through the bag body, improve the user's usage feeling, and prevent sunburn of the stored items and the user.

[0012] The waterproof bag according to claim 2, wherein the accommodating portion has a first accommodating portion located on the back side where the shoulder belt is formed, and a second accommodating portion located outside the first accommodating portion, and the waterproof fastener has a first waterproof fastener for opening and closing a first opening end portion of the first accommodating portion, and a second waterproof fastener for opening and closing a second opening end portion of the second accommodating portion. In the second accommodating portion, there are a pair of expansion elements located on both sides so as to sandwich the second waterproof fastener and formed over the outer periphery of the second accommodating portion, and an expansion slider for engaging or disengaging the pair of expansion elements. By the user operating the expansion slider, an expansion waterproof fastener is formed that can switch between a reduced state in which the pair of expansion elements are engaged to reduce the second accommodating portion and an expanded state in which the pair of expansion elements are disengaged to expand the second accommodating portion.

[0013] According to this waterproof bag, the second accommodating portion has a pair of expansion elements located on both sides so as to sandwich the second waterproof fastener and formed over the outer periphery of the second accommodating portion, and an expansion slider for engaging or disengaging the pair of expansion elements. By the user operating the expansion slider, an expansion waterproof fastener is formed that can switch between a reduced state in which the pair of expansion elements are engaged to reduce the second accommodating portion and an expanded state in which the pair of expansion elements are disengaged to expand the second accommodating portion. Therefore, when there are many items to be accommodated, the volume of the second accommodating portion can be increased by opening the expansion waterproof fastener, and more items can be accommodated. When there are few items to be accommodated, the items can be pressed together inside the second accommodating portion by closing the expansion waterproof fastener, and it is possible to suppress the movement of the items inside the bag body during exercise or the like.

[0014] In addition, since the extended waterproof fastener is provided so as to sandwich the second waterproof fastener, by closing the extended waterproof fastener in addition to closing the second waterproof fastener, a double structure of the waterproof fastener is formed, and flooding of the storage part due to sudden heavy rain or precipitation is further suppressed, thereby improving the user experience.

[0015] Furthermore, in the extended state, since the volume of the second storage part increases, the air layer up to the first storage part can be enlarged to improve the heat insulation property. Therefore, the temperature rise of the second storage part is further suppressed, and the temperature rise of the user's back is further suppressed, thereby improving the comfort of the user and also preventing the stored items and the user from getting sunburned.

[0016] The waterproof bag according to claim 3 is characterized in that in the first storage part, a storage wall is formed at the side of the first opening end part, and a storage space for storing items is formed between the storage wall and the first waterproof fastener. The first waterproof fastener includes a pair of elements formed at the first opening end part, a slider that engages or disengages the pair of elements to open and close the first opening end part, and an opening / closing slider that engages or disengages the pair of elements, is located closer to the storage wall side than the slider, and opens and closes the entrance / exit of the items into and out of the storage space.

[0017] According to this waterproof bag, a storage wall is formed in the first storage part, and the first waterproof fastener has a slider for opening and closing the first opening end part and an opening / closing slider that is located closer to the storage wall side than the slider and opens and closes the entrance / exit of the items into and out of the storage part. Therefore, since the opening / closing slider is provided for the pair of elements separately from the normal slider, the normal slider can be located in a convenient position for opening and closing the first opening end part, and the opening / closing slider can be located closer to the storage wall side and used independently for opening and closing the storage wall, thereby improving the convenience for the user.

Effect of the Invention

[0018] As described above, according to the waterproof bag of the present invention, the waterproof fabric has a white polyurethane film with light-shielding properties. In the state of use, the light from the outside is reflected by the white polyurethane film, suppressing the light from passing through the contents in the accommodation part and to the back. Therefore, while ensuring the waterproof performance, it is possible to suppress the intrusion of sunlight into the bag body, suppress the rise in the temperature of the accommodation part and the back surface of the bag body due to the intrusion of sunlight, improve the user's feeling of use, and also prevent the contents and the user from getting sunburned.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0020] (First Embodiment) Hereinafter, referring to the drawings, the waterproof bag 1 according to the first embodiment of the present invention will be described.

[0021] FIG. 1 is a front perspective view of the waterproof bag 1 according to the embodiment of the present invention, FIG. 2 is a rear perspective view of the waterproof bag 1 in FIG. 1, FIG. 3 is a front perspective view showing an expanded state in which the second waterproof fastener 30 of the waterproof bag 1 in FIG. 1 is opened, FIG. 4 is a front perspective view of the state in which the first waterproof fastener 50 of the waterproof bag 2 in FIG. 1 is opened and the inside of the first storage portion 10A is opened, FIG. 5 is a front perspective view of the state in which the third waterproof fastener 60 of the waterproof bag 1 in FIG. 1 is opened and the inside of the third storage portion 10C is opened, FIG. 6 is an enlarged view of portion A showing a state in which the side of the first waterproof fastener 50 of the waterproof bag 1 in FIG. 1 is opened, and FIG. 7 is an enlarged view of portion B showing a state in which the belt pocket of the waterproof bag 1 in FIG. 1 is opened.

[0022] For convenience of explanation in FIG. 6, the PET bottle as the stored item 5 is indicated by a two-dot chain line.

[0023] For the description of this embodiment, the width direction of the waterproof bag 1 in FIG. 1 is defined as the X-axis, the depth direction as the Y-axis, and the height direction as the Z-axis.

[0024] In this embodiment, as the waterproof bag 1, for example, a rucksack-shaped one is used.

[0025] As shown in FIGS. 1 to 4, it has bag-shaped storage portions 10A, 10B, 10C with open ends, a bag body 10 whose outer peripheral surface is formed of a waterproof fabric 11A having waterproof properties described later and covers the back of the user 6, a waterproof fastener 2 for opening and closing the open end portions 10A1, 10B1, 10C1 of the storage portions 10A, 10B, 10C, an expandable waterproof fastener 40 provided in the second storage portion 10B and switching between a reduced state in which the second storage portion 10B is reduced and an expanded state in which the second storage portion 10B is expanded, and a pair of left and right shoulder belts 25 connected above and below the back of the bag body 10 and attached to the shoulders of the user 6.

[0026] As shown in FIGS. 4 and 5, the storage portions 10A, 10B, and 10C of the bag body 10 are located on the back side where the shoulder belt 25 is formed, and include a third storage portion 10C having a third opening end portion 10C1, a first storage portion 10A located outside (in the positive Y-axis direction) of the third storage portion 10C and having a first opening end portion 10A1, and a second storage portion 10B located outside (in the positive Y-axis direction) of the first storage portion 10A and having a second opening end portion 10B1.

[0027] As shown in FIG. 4, the first storage portion 10A has, for example, a vertically long first opening end portion 10A1 that can be widely opened at the left and right and upper portions, and forms the largest storage space in the bag body 10.

[0028] As shown in FIGS. 2, 4, and 6, in this first storage portion 10A, a storage wall 14 is located on the side of the first opening end portion 10A1 and forms a storage space for storing the stored item 5 between the storage wall 14 and the first waterproof fastener 50. A first inner pocket 15 is provided on the back side within the first storage portion 10A, and a second inner pocket 16 is integrally provided outside the first inner pocket 15.

[0029] As shown in FIG. 6, the storage wall 14 is disposed within the first storage portion 10A so as to cover the lower end portion of the right side surface of the first waterproof fastener 50 from the inside.

[0030] By opening and closing the opening / closing slider 52 of the first waterproof fastener 50, which will be described later, the storage space can be exposed. The storage space can store stored items 5 such as plastic bottles and water cylinders.

[0031] As shown in FIG. 4, the first inner pocket 15 is provided on the back side of the first storage portion 10A. The first inner pocket 15 can store stored items 5 such as documents.

[0032] The second inner pocket 16 is integrally provided with the first inner pocket 15, and in this embodiment, two are formed side by side. Small items 5 such as writing utensils can be accommodated in this second pocket 16.

[0033] Similar to the first accommodating portion 10A, the second accommodating portion 10B is formed with a second opening end portion 10B1 that is vertically long and has openings at the upper and both side portions, and is formed narrower than the first accommodating portion 10A. Also, in the expanded state described later, it is formed narrower than the first accommodating portion 10A and wider than the third accommodating portion 10C.

[0034] In the bag body 10, the second accommodating portion 10B can be switched between a reduced state (FIG. 1) in which the second accommodating portion 10B is reduced and an expanded state (FIG. 3) in which the second accommodating portion 10B is expanded by the user 6 operating the expansion slider 42 of the expansion waterproof fastener 40 described later.

[0035] As shown in FIG. 5, the third accommodating portion 10C is formed with a third opening end portion 10C1 that is vertically long and has openings at the upper and both side portions, similar to the first accommodating portion 10A, and is formed narrower than the expanded state of the second accommodating portion 10B.

[0036] The third accommodating portion 10C in the bag body 10 has a third inner pocket 17 formed on the back side (negative Y-axis direction) inside the third accommodating portion 10C, and a fourth inner pocket 18 integrally formed with the third inner pocket 17 on the front side (positive Y-axis direction) of the third inner pocket 17.

[0037] As shown in FIG. 4, the third inner pocket 17 is formed in a substantially rectangular parallelepiped shape with an open upper end so that items 5 such as electronic devices (not shown) such as notebook computers (laptops) and tablet terminals can be accommodated.

[0038] The back side (negative Y-axis direction) inside the third inner pocket 17 is formed of a cushioning material (not shown) or the like to cushion impacts on items 5 such as electronic devices.

[0039] The fourth inner pocket 18 is integrally formed with the third inner pocket 17 with its upper end open. Small electronic devices such as smartphones and chargers, etc., as well as other items 5 can be accommodated in this fourth inner pocket 18.

[0040] Also, as shown in FIGS. 1 to 6, the bag body 10 includes a fabric 11 that constitutes the bag body 10, a plurality of buckles 12 provided to engage the back side and the front side of the fabric 11, an outer storage portion 13 provided on the left side surface of the fabric 11, a back storage pocket 19 with an open upper portion on the back of the fabric 11, a back right storage pocket 20 that opens on the right side (positive X-axis direction) on the back of the fabric 11, a back left storage pocket 21 that opens on the left side (negative X-axis direction) on the back of the fabric 11, and a front storage pocket 22 with an open upper portion on the front.

[0041] The fabric 11 has a waterproof fabric 11A that covers the front (positive Y-axis direction), both side surfaces (X-axis direction), and the upper and lower surfaces (Z-axis direction), and a back fabric 11B that covers the back (negative Y-axis direction).

[0042] For the waterproof fabric 11A, a material that can ensure light-shielding, heat-shielding, and water pressure resistance is used. Also, a material with additional functions such as UV cut (ultraviolet shielding property) and wind resistance can be used as needed. In this embodiment, "Magical Harmony 'Crocky'" (MH-9600) manufactured by Masuda Co., Ltd. is used as such a material.

[0043] This waterproof fabric 11A is composed of a three-layer structure having a front layer 11A1, an intermediate layer (not shown) disposed inside the front layer 11A1, and a back layer 11A2 disposed further inside the intermediate layer.

[0044] Since the front layer 11A1 is exposed to air, moisture, and ultraviolet rays, a polyester material is used to suppress deterioration. Furthermore, it is preferable to use a black material to improve heat absorption.

[0045] For the intermediate layer (not shown), a white polyurethane film is used to reflect light from the outside. Since the intermediate layer is composed of a white polyurethane film, light from the outside is reflected by the white polyurethane film, suppressing the transmission of light to the accommodating portions (the first accommodating portion 10A, the second accommodating portion 10B, the third accommodating portion 10C) and the user 6.

[0046] Preferably, the back layer 11A2 is made of a polyurethane film.

[0047] By configuring the waterproof fabric 11A in such a three-layer structure of the front layer 11A1, the intermediate layer, and the back layer 11A2, it is possible to ensure a light-shielding property of 99.99% according to the JIS L 1055A method, an ultraviolet shielding rate of 99% according to the Kaken method, a heat insulation property with a temperature drop of 4°C according to the reflamp method, a water pressure resistance of 20,000 mmHg, and a windproof property.

[0048] The back fabric 11B is a fabric that contacts the back of the user 6 when the user 6 wears it, and a material that absorbs and evaporates the sweat of the user 6 and cools by the heat of vaporization is used. Furthermore, other functions such as appropriate stretchability and a UV cut function may be added to the back fabric 11B in addition to such a cooling effect.

[0049] In this embodiment, “Spray Stretch” (UT-132) manufactured by Masuda Co., Ltd. is used as the material for such a back fabric 11B. By using this material, the sweat of the user 6 is absorbed, and the evaporation accelerating fiber on the fabric surface accelerates evaporation to obtain an effect of taking away heat and lowering the temperature.

[0050] As shown in FIGS. 1 and 2, the buckle 12 is composed of a female buckle 12A and a male buckle 12B.

[0051] In this embodiment, a total of four female buckles 12A of a plurality of buckles 12 are provided, two on the right side of the front side of the bag body 10 and two on the left side, and a total of four male buckles 12B corresponding to the female buckles 12A are provided, two on the right side of the back side of the bag body 10 and two on the left side.

[0052] By engaging this buckle 12, it is possible to prevent the waterproof bag 1 from losing its shape during use.

[0053] As shown in FIG. 2, the outer storage portion 13 is formed as a bag body having a substantially rectangular shape in side view with an open top. An object 5 such as an umbrella can be stored in this outer storage portion 13.

[0054] As shown in FIG. 2, a fastener 13A is formed on one long side of the outer storage portion 13. When storing the object 5, the fastener 13A is opened, and after placing the object 5 in the outer storage portion 13, the fastener 13A is closed, so that the object 5 can be stored in the outer storage portion 13.

[0055] In addition, a drain port (not shown) for discharging water is formed at the lower end of the outer storage portion 13. When storing a wet object 5 such as an umbrella in the outer storage portion 13, water can be discharged from this drain port.

[0056] The back storage pocket 19 is formed in a substantially rectangular shape so that a commercially available cold pack can be stored. The user 6 can store a commercially available cold pack or the like in this back storage pocket 19 to cool the back on sweltering days and further improve the comfort.

[0057] Since the right back storage pocket 20 and the left back storage pocket 21 are located at the right and left flanks of the user 6 during use, the user 6 can store an object 5 such as a wallet in these right back storage pocket 20 and left back storage pocket 21 while wearing the bag body 10.

[0058] By storing the contents 5 such as a wallet in the rear right storage pocket 20 and the rear left storage pocket 21 formed on these rear sides, even when the waterproof bag 1 is carried on the back, it is possible to prevent a person other than the user 6 from opening from the back and taking out the stored contents 5 inside.

[0059] The opening of the rear right storage pocket 20 is configured to be openable and closable by a waterproof fastener 20A. Also, the opening of the rear left storage pocket 21 is configured to be openable and closable by a waterproof fastener 21A similar to the waterproof fastener 20A.

[0060] As shown in FIG. 1, the front storage pocket 22 is configured such that its opening can be opened and closed by a waterproof fastener 22A, and the front storage pocket 22 can also store the contents 5 such as small items.

[0061] As shown in FIGS. 1 to 6, the waterproof fastener 2 includes a first waterproof fastener 50 that opens and closes a first opening end portion 10A1 at the upper part of the first storage portion 10A, a second waterproof fastener 30 that opens and closes a second opening end portion 10B1 at the upper part of the second storage portion 10B, and a third waterproof fastener 60 that opens and closes a third opening end portion 10C1 at the upper part of the third storage portion 10C.

[0062] As shown in FIGS. 4 and 6, the first waterproof fastener 50 includes a pair of elements 51 formed along the first opening end portion 10A1 of the first storage portion 10A, sliders 53, 54 that engage or disengage the pair of elements 51 to open and close the first opening end portion 10A1, an opening and closing slider 52 that engages or disengage the pair of elements 51 and is located on the storage wall 14 side rather than the sliders 53, 54 and opens and closes the entrance and exit of objects into and out of the storage space of the storage wall 14, and a tape 55 that stitches the pair of elements 51 to the bag body 10. For the configurations of the element 51, the sliders 52, 53, 54, and the tape 55, known ones are used.

[0063] Separate from the sliders 53 and 54, an opening / closing slider 52 is provided for the pair of elements 51. Thus, while arranging the sliders 53 and 54 on the upper surface of the bag body 10 for opening and closing, the opening / closing slider 52 can be independently used for opening and closing the storage wall 14.

[0064] The pair of tapes 55 is configured to cover the pair of elements 51 from above while the sliders 53 and 54 and the opening / closing slider 52 are exposed to the outside in a state where the pair of elements 51 are engaged, in order to suppress the intrusion of water from the elements 51. As the material of such a tape 51, a waterproof material such as nylon or polyester is used.

[0065] As shown in FIG. 3, the second waterproof fastener 30 is provided across the upper surface from the right side surface to the left side surface of the bag body 10. This second waterproof fastener 30 includes a pair of elements 31 formed along the second opening end portion 10B1 of the second storage portion 10B in the bag body 10, a slider (not shown) that engages the pair of elements 31, and a pair of tapes 32 that sew the pair of elements to the bag body 10. This second waterproof fastener 30 is provided inside the extended waterproof fastener and appears outside in the open state of the extended waterproof fastener. By opening this second waterproof fastener 30, the second storage portion 10B appears.

[0066] For the elements 31, the slider (not shown), and the tapes 32, materials of the same kind as the elements 51 of the first waterproof fastener 50, the sliders 53 and 54, and the tapes 55 are used respectively.

[0067] As shown in FIG. 5, the third waterproof fastener 60 includes a pair of elements 61 formed along the third opening end portion 10C1 of the third storage portion 10C in the bag body 10, a slider 62 that engages the pair of elements, and a pair of tapes 63 that sew the pair of elements 61 to the bag body 10.

[0068] For the element 61, slider 62, and tape 63, materials similar to the element 51, sliders 53, 54, and tape 55 of the first waterproof fastener 50 are used respectively.

[0069] As shown in FIGS. 1 to 4, the extended waterproof fastener 40 is located on both sides in the Y-axis direction with respect to the second accommodating portion 10B so as to sandwich the second waterproof fastener 30, and is formed across the outer periphery of the second accommodating portion 10B. It has a pair of extended elements 41, an extended slider 42 for engaging or disengaging the pair of extended elements 41, and an extended tape 43 for sewing the extended element 41 to the bag body 10.

[0070] For the extended element 41, extended slider 42, and extended tape 43, materials similar to the element 51, sliders 53, 54, and tape 55 of the first waterproof fastener 50 are used respectively.

[0071] The extended tape 43 is provided from a starting point 43A located at the upper part of the right side surface of the bag body 10 to an ending point 43B located at the lower part of the right side surface of the bag body 10 via the bottom surface, left side surface, and upper surface of the bag body 10.

[0072] That is, the starting point 43A and the ending point 43B of this extended tape 43 are arranged so as to overlap three-dimensionally.

[0073] By the user 6 operating the extended slider 42, it is possible to switch between a reduced state (FIG. 1) in which the pair of extended elements 41 are engaged to reduce the second accommodating portion 10B and an extended state (FIGS. 3) in which the pair of extended elements 41 are disengaged to expand the second accommodating portion 10B.

[0074] In addition, by further providing the extended waterproof fastener 40 outside the second waterproof fastener 30, a double structure of the second waterproof fastener and the extended waterproof fastener 20 is formed, and the ingress of water into the second accommodating portion 10B communicating with the second waterproof fastener 30 can be further suppressed, and the comfort of the user 6 can be improved.

[0075] As shown in FIGS. 2 and 6, the shoulder belt 25 includes a right belt 26 disposed on the right side of the back surface of the bag body 10 and sewn to the upper and lower ends of the bag body 10 respectively, a left belt 27 disposed on the left side of the back surface of the bag body and sewn to the upper and lower ends of the bag body 10 respectively, a locking portion 28 provided at an intermediate portion of the right belt 26, and a locked portion 29 provided at an intermediate portion of the left belt 27 and detachably locked to the locking portion 28. This shoulder belt 25 is attached to the shoulder of the user 6 during use.

[0076] On the right belt 26, a belt pocket 26A is formed on the back side (negative Y-axis direction), and a waterproof fastener 26B for opening and closing the opening of the belt pocket 26A is formed.

[0077] During use, this right belt 26 is located in front of the user 6. The user 6 can open and close the opening of this belt pocket 26A in the state of wearing the bag body 10 by opening and closing this waterproof fastener 26B, and can accommodate the contents 5 such as small items like lip cream.

[0078] Similarly, on the left belt 27, a belt pocket 27A is formed on the back side (negative Y-axis direction), and a waterproof fastener 27B for opening and closing the opening of the belt pocket 27A is formed.

[0079] The left belt 27, the belt pocket 27A, and the waterproof fastener 27B are the same as the right belt 26, the belt pocket 26A, and the waterproof fastener 26B respectively.

[0080] The male buckle is used for the locking portion 28.

[0081] The female buckle is used for the locked portion 29. A whistle may be formed on the locked portion 29. In an emergency, the whistle can be blown to call for help from people around.

[0082] By locking the locking part 28 and the locked part 29 in the state where the waterproof bag 1 is worn, the waterproof bag 1 can be fixed to the body of the user 6.

[0083] (Effect) According to the waterproof bag 1 according to the present embodiment, the waterproof fabric 11A has a white polyurethane film having light-shielding properties. In the use state, the light from the outside is reflected by the white polyurethane film, and the light is suppressed from passing through the objects in the accommodating parts 10A, 10B, 10C and the back. Therefore, while ensuring the waterproof performance of suppressing the intrusion of water from the outside by the waterproof fabric 11A, it is possible to suppress the sunlight from passing through the bag body 10 by the light-shielding performance. For this reason, it is possible to suppress the temperature of the accommodating parts 10A, 10B, 10C and the back surface of the bag body 10 from rising due to the sunlight passing through the bag body 10, improve the comfort of the user 6, and prevent the contents 5 and the user 6 from being sunburned.

[0084] Further, the expandable waterproof fastener 40 has a pair of elements 41 provided across the outer periphery of the bag body 10 with the second waterproof fastener 30 sandwiched therebetween, and a slider 42 for engaging the pair of elements 41. By engaging the pair of elements 41 with the slider 42 to reduce the first accommodating part 10B, when there are a lot of contents 5, the volume of the second accommodating part 10B can be increased by opening the expandable waterproof fastener 40, and more contents 5 can be accommodated. When there are few contents 5, by closing the expandable waterproof fastener 40, the contents 5 are crimped in the second accommodating part 10B, and it is possible to suppress the movement of the contents 5 during exercise or the like.

[0085] Furthermore, since the second waterproof fastener 30 is provided inside the expandable waterproof fastener 40, by closing the expandable waterproof fastener 40 further with the second waterproof fastener 30 closed, a double structure of the waterproof fastener is formed, and the immersion of the second accommodating part 10B due to sudden heavy rain or precipitation is further suppressed, so that the comfort of the user 6 can be improved.

[0086] Furthermore, in the expanded state of the second storage portion 10B, the volume of the second storage portion 10B increases, so that the air layer up to the first storage portion 10A can be enlarged to improve the heat insulation property. Therefore, the temperature rise of the second storage portion 10B is further suppressed, and the temperature rise of the back of the user 6 is further suppressed, thereby improving the comfort of the user 6 and also preventing the stored item 5 and the user 6 from getting sunburned.

[0087] Moreover, since the first waterproof fastener 50 is provided with an opening / closing slider 52 separately from the sliders 53 and 54 for a pair of elements 51, the first opening end portion 10A1 adjacent to the storage wall 14 can be opened by operating only the opening / closing slider 52. For this reason, the sliders 53 and 54 and the opening / closing slider 52 can be operated independently, and the stored item 5 can be stored in the storage wall 14 by operating the opening / closing slider 52 while positioning the sliders 53 and 54 at a location where they are easy to use for opening and closing the first opening end portion 10A1, thereby improving the comfort of the user 6.

[0088] Also, by covering the entire back of the user 6 with the bag body 10 formed of a waterproof fabric 11a having light-shielding properties, it is possible to suppress the sunlight from passing through the bag body 10 and prevent the user 6 from getting sunburned.

[0089] (Usage method) Next, the usage method of the waterproof bag 1 according to the present embodiment will be described with reference to FIG. 8.

[0090] FIG. 8 is a schematic diagram showing the usage state of the waterproof bag 1.

[0091] In FIG. 8, for convenience of explanation, the user 6 is illustrated by a two-dot chain line.

[0092] As shown in FIG. 8, the user 6 can fix the waterproof bag 1 to the body of the user 6 by passing an arm through the shoulder belt 25 of the waterproof bag 1 and locking the locking portion 28 provided on the right belt 26 and the locked portion 29 provided on the left belt 27 to each other.

[0093] When there is a large amount of the stored item 5, for example, the user 6 can expand the second storage part 10B by opening the second waterproof fastener 30, and can store more of the stored item 5 in the second storage part 10B.

[0094] Also, when there is a small amount of the stored item 5, for example, by closing the second waterproof fastener 30, the second storage part 10B is reduced, and the stored item 5 in the second storage part 10B is pressure-bonded inside, so that the stored item 5 can be prevented from moving inside the second storage part 10B during exercise or the like.

[0095] Furthermore, in the case of a sudden heavy rain, etc., by closing the extended waterproof fastener 40 and also closing the second waterproof fastener 30, a double waterproof structure is formed, and the ingress of water into the second storage part 10B can be further prevented.

[0096] When the user 6 stores the stored item 5 such as a folding umbrella, etc., the user 6 opens the waterproof fastener 13A formed in the outer storage part 13, and closes the waterproof fastener 13A with the stored item 5 such as an umbrella arranged inside the outer storage part 13, so that the umbrella can be stored in the outer storage part 13.

[0097] Also, the storage wall 14 can store the stored item 5 such as a plastic bottle or a water tube. In this case, the user 6 can open and close the storage wall 14 by operating only the rightmost slider 52 among the three sliders 52, 53, 54 of the first waterproof fastener 50. With the storage wall 14 opened by operating the rightmost slider 52, the stored item 5 such as a plastic bottle or a water tube is arranged on the storage wall 14, and by operating the rightmost slider 52 to close the storage wall 14, the stored item 5 such as a plastic bottle or a water tube can be stored on the storage wall 14.

[0098] When the user 6 takes out the stored item 5 such as a plastic bottle or a water tube stored in the storage wall 14, the user 6 can take out the stored item 5 such as a plastic bottle or a water tube from the storage wall 14 by operating only the rightmost slider 52 of the first waterproof fastener 50 to open the storage wall 14.

[0099] Also, on extremely hot days, by storing a commercially available coolant (not shown) or the like in the back storage pocket 19 formed in the bag body 10, the back of the user 6 can be cooled during use.

[0100] (Other Embodiments) In the above embodiment, a male buckle is used as the locking portion 28 provided on the right belt 26, and a female buckle is used as the locked portion 29 provided on the left belt 27. However, these male and female buckles may be reversed. That is, a female buckle may be used as the locking portion 28, and a male buckle may be used as the locked portion 29.

[0101] Also, what is used as the locking portion 28 or the locked portion 29 is not limited to buckles as long as it can be detachably locked. For example, a hook-and-loop fastener can also be used.

[0102] In the above embodiment, the waterproof bag 1 using two belts, the right belt 26 and the left belt 27, as the shoulder belt 25 is used, but the number of shoulder belts 25 is not limited to this. For example, only one belt like a shoulder bag may be used.

[0103] In the above embodiment, the extended waterproof fastener 40 is provided outside the second waterproof fastener 30 to form a double-structured waterproof fastener. However, the double-structured waterproof fastener is not limited to the second waterproof fastener 30 and the extended waterproof fastener 40. For example, a waterproof fastener may be further provided outside the first waterproof fastener 50 to form a double structure, or a waterproof fastener may be further provided outside the third waterproof fastener 60 to form a double structure.

[0104] Specifically, a waterproof fastener having the same configuration as the extended waterproof fastener 40, that is, a pair of elements provided across the outer periphery of the bag body 10 sandwiching the first waterproof fastener 50, a slider for engaging the pair of elements, and a tape for sewing the elements to the bag body 10, may be provided outside the first waterproof fastener 50. Further, a waterproof fastener having a pair of elements provided across the outer periphery of the bag body 10 sandwiching the third waterproof fastener 60, a slider for engaging the pair of elements, and a tape for sewing the elements to the bag body 10, may be provided outside the third waterproof fastener 60.

[0105] In the above embodiment, the user 6 of the waterproof bag 1 is described assuming a human, but the user 6 of the waterproof bag 1 is not limited to humans and may be worn by pets such as dogs and cats, horses, cows, and other animals.

[0106] In the above embodiment, one locking portion 28 and one locked portion 29 are provided on the shoulder belt 25, respectively, but the number of the locking portion 28 and the locked portion 29 is not limited to one each, and a plurality of them may be provided on the shoulder belt 25. Specifically, two or more locking portions 28 may be provided on the right belt 26, and the locked portion 29 may be provided at a position corresponding to the locking portion 28 on the left belt 27.

[0107] In the above embodiment, the size of the bag body 10 is described as being large enough to cover the back of the user 6, but the size of the bag body 10 is not particularly limited to this, and for example, it may be sufficient if it covers at least a part of the back of the user 6.

[0108] The present invention can be implemented in various other forms without departing from its spirit or main features. Therefore, the above-described embodiments are merely illustrative in all respects and should not be construed in a limiting sense. The scope of the present invention is indicated by the scope of the utility model registration claims and is not restricted by the text of the specification in any way. Further, all modifications, various improvements, substitutions, and modifications belonging to the equivalent scope of the utility model registration claims are all within the scope of the present invention. [Explanation of symbols]

[0109] 1:Waterproof bag 5: Plastic bottles 6:User 10:Bag body 10A: First storage section (storage section) 10A1: First opening end (opening end) 10B: Second storage section (storage section) 10B1: Second opening end (opening end) 10C: Third storage section (storage section) 10C1: Third opening end (opening end) 11: Fabric 11A: Waterproof fabric 11A1: Front layer 11A2: Back layer 11B: Back fabric 12: Buckle 12A: Female buckle 12B: Male buckle 13: Outer storage compartment 13A: Waterproof zipper 14: Containment Wall 15: First inner pocket 16: Second inner pocket 17: Third inner pocket 18: Fourth inner pocket 19: Back storage pocket 20: Back right storage pocket 21: Left rear storage pocket 22: Front storage pocket 25: Shoulder belt 26: Right side belt 26A: Waterproof zipper 27: Left side belt 27A: Waterproof zipper 28: Engagement part 29: Engaged part 2:Waterproof zipper 50: First waterproof zipper (waterproof zipper) 51: Element 52, 53, 54: Slider 55: Tape 30: Second waterproof zipper (waterproof zipper) 31: Element 32: Tape 60: Third waterproof zipper (waterproof zipper) 61: Element 62: Slider 63: Tape 40: Expansion waterproof zipper 41: Expansion element 42: Expansion slider 43: Expansion tape

Claims

1. A waterproof bag having a bag body with a bag-shaped storage part having an open end and an outer peripheral surface made of waterproof fabric having waterproof properties, a waterproof fastener for opening and closing the open end of the storage part, and a pair of shoulder straps connected above and below the back of the bag body and attached to the user's shoulders, wherein the bag body is attached to the back via the pair of shoulder straps, and in a use state where the open end is sealed with the waterproof fastener, water from the outside is prevented from entering the storage part, wherein the waterproof fabric has a white polyurethane film having light-shielding properties, and in the use state, light from the outside is reflected by the white polyurethane film, and light transmission to the storage part and the user is suppressed. The waterproof bag is characterized by this.

2. The storage part has a first storage part located on the back side where the shoulder strap is formed, and a second storage part located outside the first storage part, the waterproof fastener has a first waterproof fastener for opening and closing a first open end of the first storage part, and a second waterproof fastener for opening and closing a second open end of the second storage part, the second storage part has a pair of expansion elements located on both sides so as to sandwich the second waterproof fastener and formed over the outer periphery of the second storage part, and an expansion slider for engaging or disengaging the pair of expansion elements, and by the user operating the expansion slider, an expansion waterproof fastener is formed that switches between a reduced state in which the pair of expansion elements are engaged to reduce the second storage part and an expanded state in which the pair of expansion elements are disengaged to expand the second storage part. The waterproof bag according to claim 1, characterized by this.

3. In the first storage part, a storage wall is formed on the first open end side to form a storage space for storing contents between the storage wall and the first waterproof fastener, the first waterproof fastener has a pair of elements formed at the first open end, a slider for engaging or disengaging the pair of elements to open and close the first open end, and an opening / closing slider for engaging or disengaging the pair of elements and located on the storage wall side rather than the slider side to open and close an entrance / exit for the contents into / from the storage space. The waterproof bag according to claim 2, characterized by this.

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