Sleeping bag pillows, sleeping bag pillow covers, and sleeping bag pillow fillings

Abstract

To enable comfortable use of a pillow and maintain or improve the heat retention performance of a sleeping bag. [Solution] A sleeping bag pillow 1 is placed inside the hood of a sleeping bag when in use, and comprises a cover 2 and an inner material 3 placed inside the cover 2, with the inner material 3 having a first corner 4, which is the corner located on the top side of the user's head, having a curved or tapered shape. On a side surface 6 on the user's neck side, a second corner 5, which is the corner located on the user's neck side, may bulge outward more than the intermediate section between the two second corners 5, and the side surface 6 on the user's neck side may have a curved shape.

Description

[Technical Field]

[0001] The present invention relates to a sleeping bag pillow, a sleeping bag pillow cover, and a sleeping bag pillow filling. [Background technology]

[0002] When using a sleeping bag for outdoor activities such as hiking or camping, carrying a pillow can be bulky, so it is common to carry a relatively small, compact pillow or to use a towel or piece of clothing instead of a pillow. Summary of the Invention [Problem to be solved by the invention]

[0003] As mentioned above, substitutes such as small pillows and towels are often too small or too narrow and deep compared to pillows of the size that users normally use, making them uncomfortable and preventing a good night's sleep. In some cases, this can cause neck pain.

[0004] Furthermore, because sleeping bags have a hood that covers the user's head, if a pillow is used with the sleeping bag, the pillow must be placed inside the hood. The hood of a sleeping bag has a small volume to improve heat retention, and the hood has a narrow, arc-shaped tip. Therefore, if a relatively large pillow is placed inside the hood, as shown in Figure 5, two corners 31 of the pillow 30 will hit the inner surface of the hood 22. Forcing the pillow into the hood will cause the hood 22 to stretch, making it impossible to fit the pillow 30 inside the hood 22.

[0005] Furthermore, the sleeping bag 20 is used by pulling the drawcord to tighten the opening 23 of the hood 22 to eliminate the gap between the face and the hood 22 and prevent cold air from entering. When a relatively large pillow 30 is placed inside the hood 22, the hood 22 is stretched by the two corners 31 of the pillow 30, making it impossible to tighten the opening 23 of the hood 22. As a result, the head cannot be kept warm, and the sleeping bag 20 is unable to demonstrate its intended warmth-retaining performance.

[0006] Typically, pillows are filled with elastic materials such as polyurethane foam (memory urethane), which exerts a strong force that causes the pillow to return to its original shape. Therefore, even if you pull the drawcord to tighten the hood opening, the pillow will not deform, and the hood opening cannot be tightened. Inflatable pillows, which do not have a filling and inflate the body with air or other gases, are relatively prone to deformation. However, inflatable pillows make it difficult for the user's head to stay in place, and they tend to shake. Also, by adjusting the amount of air, if the pillow's resilience is too high, the head will bounce too much, while if the resilience is too low, the head will sink in too much, making for an uncomfortable sleep.

[0007] The present invention was made in consideration of the above circumstances, and aims to provide a sleeping bag pillow, a sleeping bag pillow cover, and a sleeping bag pillow filling that allow the pillow to be used comfortably and maintain or improve the heat retention performance of the sleeping bag. [Means for solving the problem]

[0008] In order to solve the above problems, the sleeping bag pillow, sleeping bag pillow cover, and sleeping bag pillow filling of the present invention adopt the following measures. In other words, the sleeping bag pillow of the present invention is a sleeping bag pillow that is placed inside the hood part of a sleeping bag when in use, and comprises a cover and a filling placed inside the cover, and the filling has a first corner, which is the corner located on the top side of the user's head, that has a curved or tapered shape.

[0009] In the above device, the widthwise length of one of the first corner portions may be 10% or more of the total width of the core material.

[0010] In the above device, on the side portion of the inner material on the side of the user's neck, the second corner portion, which is the corner located on the side of the user's neck, may bulge outward more than the intermediate portion between the two second corner portions, and the side portion on the side of the user's neck may have a curved shape.

[0011] The sleeping bag pillow cover of the present invention is used for a sleeping bag pillow that is placed inside the hood part of the sleeping bag when in use, and is a sleeping bag pillow cover that can accommodate a filling inside, and the first corner, which is the corner located on the top of the user's head side, has a curved or tapered shape.

[0012] The sleeping bag pillow filling of the present invention is used in a sleeping bag pillow that is placed inside the hood part of the sleeping bag when in use, and is placed inside the pillow cover, and the first corner, which is the corner located on the top of the user's head side, has a curved or tapered shape. [Effects of the Invention]

[0013] According to this invention, the pillow can be used comfortably and the heat retention performance of the sleeping bag can be maintained or improved. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a plan view of a pillow according to an embodiment of the present invention; [Figure 2] 2 is a longitudinal cross-sectional view of a pillow according to an embodiment of the present invention, taken along the line II-II in FIG. 1; [Figure 3] 1 is a plan view showing a pillow according to an embodiment of the present invention installed in a sleeping bag; FIG. [Figure 4] 10 is a plan view showing a modified pillow according to an embodiment of the present invention installed in a sleeping bag. [Figure 5] FIG. 1 is a plan view showing a conventional pillow placed in a sleeping bag. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, a pillow 1 according to an embodiment of the present invention will be described with reference to the drawings. A pillow 1 for a sleeping bag according to this embodiment (hereinafter referred to as "pillow 1") includes a cover 2 and a filling 3, as shown in FIGS.

[0016] The cover 2 can accommodate the filling 3 inside, and may be made of any material, such as wool or cloth, that can be used as a pillow cover. The size of the cover 2 may be such that the filling 3 fits snugly inside, or may be sufficiently larger than the filling 3 to accommodate it with ample space. The size of the cover 2 may also be smaller than the filling 3, so that the filling 3 is not completely contained inside the cover 2 and some of it is exposed.

[0017] The inner material 3 is placed inside the cover 2. The material of the inner material 3 is a foam such as polyurethane foam (low-resilience urethane), synthetic fiber cotton, feathers, or particles such as synthetic resin pipes and beads. The inner material 3 may be composed of a single item, or may be composed of the contents (main body) of the inner material 3 and a cover for the inner material 3 that stores the contents. The inner material 3 may be detachable from the cover 2, or may be integrated with the cover 2.

[0018] The shape of the filling 3 will be described below. When the filling 3 is made of a material that can maintain its shape, such as a foam such as polyurethane foam (low-resilience urethane), the shape of the filling 3 is the shape of that material. When the contents (main body) of the filling 3 are made of a material that cannot maintain its shape as filling 3, such as synthetic fiber cotton, feathers, or granular materials such as synthetic resin pipes or beads, the shape of the filling 3 is the shape of the cover for the filling 3 that stores the contents.

[0019] The width direction length of the filling 3 is, for example, 50 cm or more, preferably 60 cm or more. The depth direction length of the filling 3 is, for example, 35 cm or more, preferably 40 cm or more. This makes the pillow 1 equivalent to the size of pillows that users use on a daily basis. Note that the size of the filling 3 according to this embodiment is not limited to the above-mentioned examples, and may be smaller than these sizes.

[0020] When used as a pillow 1, the inner material 3 has a first corner portion 4 which is a corner portion located on the top side of the user's head, a second corner portion 5 which is a corner portion located on the neck side of the user, a first side portion 6 which is a side portion on the neck side of the user, and a second side portion 7 which is a side portion on the top side of the user's head.

[0021] The first corners 4 are located near the top of the user's head and have a curved or tapered shape. Figure 1 shows an example in which the first corners 4 have a curved shape. This prevents the two first corners 4 from coming into contact with the inner surface of the hood portion 22 when the pillow 1 is placed inside the hood portion 22 of the sleeping bag 20, as shown in Figure 3 . When the hood portion 22 is tightened by pulling the drawcord (not shown), the inner surface of the hood portion 22 easily conforms to the shape of the first corners 4. Because the corners of the pillow 1 do not push against the leading edge of the hood portion 22, the opening 23 of the hood portion 22 can be tightened. This improves the warmth of the head and allows the sleeping bag to fully utilize its inherent warmth-retaining properties.

[0022] The widthwise length L1 (see FIG. 1) of one first corner portion 4 may be, for example, 10% or more of the overall width Lo of the inner material 3. In this case, even if the overall width Lo of the pillow 1 is relatively long or the depthwise length is long, when the pillow 1 is placed inside the hood portion 22 of the sleeping bag, the two first corner portions 4 are unlikely to come into contact with the inner surface of the hood portion 22.

[0023] On the other hand, if the widthwise length L1 of one first corner portion 4 is less than 10% of the overall width Lo of the inner material 3, it is necessary to shorten the overall width Lo of the inner material 3 or shorten the depthwise length to make it less likely that the two first corner portions 4 will come into contact with the inner surface of the hood portion 22. As a result, the pillow 1 may become smaller and more compact than pillows of a size that the user normally uses, which may result in the user feeling uncomfortable and not getting a good night's sleep.

[0024] The second corner 5 is located on the first side surface 6 on the side of the user's neck, opposite the first corner 4. The second corner 5 bulges outward from the intermediate portion between the two second corners 5 on the first side surface 6, and the first side surface 6 has a curved shape that is recessed toward the center of the inner material 3. This makes it easier for the user's neck to be accommodated in the curved portion of the first side surface 6. As a result, the gap between the user's shoulders and the pillow 1 is reduced, and the user's neck is surrounded by the pillow 1, improving the warmth around the user's shoulders and neck.

[0025] In the above-described embodiment, the first side portion 6 has a curved shape recessed toward the center, but the first side portion 6 may also have a linear shape in the middle between the two second corner portions 5, as shown in Figure 4.

[0026] 3 and 4, the depth direction length of the filling 3 may be such that when the filling 3 is placed inside the hood portion 22 so that the first side portion 6 on the side of the user's head is in contact with the inner surface of the hood portion 22, the second side portion 7 on the side of the user's neck is located inside the sleeping bag main body portion 21. In this case, when the user uses the pillow 1, the position of the shoulders is positioned lower than the second side portion 7 (toward the sleeping bag main body portion 21), allowing the user to sleep with their shoulders completely enclosed in the sleeping bag main body portion 21, improving heat retention.

[0027] The second side portion 7, which is the side facing the top of the user's head, may have an intermediate portion between the two first corner portions 4, as shown in Figure 1, and the intermediate portion may have a straight shape, or the two first corner portions 4 may be adjacent to each other and have a continuous curved shape.

[0028] The shape of the cover 2 may be the same as that of the filling 3 described above, or may be a different shape from that of the filling 3 as long as it does not prevent the pillow 1 from being placed on the hood portion 22.

[0029] As described above, according to this embodiment, the first corners 4 located on the side of the user's head have a curved or tapered shape, so when the pillow 1 is placed inside the hood portion 22 of the sleeping bag, the two first corners 4 are less likely to come into contact with the inside surface of the hood portion 22. Furthermore, because the corners of the pillow 1 do not press against the tip of the hood portion 22, the opening 23 of the hood portion 22 can be narrowed, improving the warmth of the head and enabling the sleeping bag to demonstrate its inherent heat-retaining performance. [Explanation of symbols]

[0030] 1: Sleeping bag pillow (pillow) 2: Cover 3: Middle material 4:First corner 5:Second corner 6:First side part 7:Second side part 20: Sleeping bag 21: Sleeping bag body 22: Hood section 23: Opening 30: Pillow 31: corner

Claims

1. A sleeping bag pillow that is placed inside the hood of a sleeping bag when in use, Cover and A filler placed inside the cover; Equipped with The inner material of the pillow for a sleeping bag has a first corner portion, which is a corner portion located on the top side of the user's head, having a curved or tapered shape.

2. 2. The pillow for a sleeping bag according to claim 1, wherein the widthwise length of one of the first corner portions is 10% or more of the total width of the inner material.

3. In the side portion of the inner material on the neck side of the user, a second corner portion, which is a corner portion located on the neck side of the user, bulges outward from an intermediate portion between the two second corner portions, 2. The pillow for a sleeping bag according to claim 1, wherein the side portion on the side of the user's neck has a curved shape.

4. A sleeping bag pillow cover that is used for a sleeping bag pillow that is placed inside the hood of a sleeping bag during use and that can accommodate a filling material inside. A sleeping bag pillow cover in which the first corner, which is the corner located on the top of the user's head side, has a curved or tapered shape.

5. A sleeping bag pillow filling material is used for a sleeping bag pillow that is placed inside the hood part of a sleeping bag when in use and is placed inside a pillow cover, A sleeping bag pillow filling material in which the first corner portion, which is the corner portion located on the top side of the user's head, has a curved or tapered shape.

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