pillow

Abstract

This pillow provides a way to further reduce pressure and discomfort on the head and neck, as well as reduce pressure on the ears when turning over in bed, allowing for adjustment of sleeping comfort. [Solution] The pillow comprises an upper pillow (10) having a bag (11) filled with a filler (12), and a lower pillow (20) having a bag (21) filled with a filler (22). The upper pillow (10) and the lower pillow (20) are constructed by connecting adjacent bag bodies (11) and bag bodies (21) via connecting parts (13) and (23). By positioning the upper pillow (10) above the lower pillow (20), a first space is formed near the connecting part (13) of the upper pillow (10), a second space is formed between the upper pillow (10) and the lower pillow (20), and a third space is formed near the connecting part (23) of the lower pillow (20) and between it and the installation surface (L). The bag (11) of the upper pillow (10) is provided with a recess (14).

Description

Technical Field

[0009] ,

[0001] The present invention relates to a pillow, and more particularly to a pillow that reduces the pressure on the user's head and neck and realizes a comfortable sleeping feeling.

Background Art

[0002] Comfortable sleep is important for maintaining health, and various techniques have been proposed for pillows to improve the quality of sleep.

[0003] The functions required for a pillow include appropriately supporting the user's head and neck, reducing the pressure on the head and neck, and not causing a sense of discomfort when turning over.

[0004] Regarding the internal structure of the pillow, an integrated structure in which a single bag body is filled with a filling material is common. However, in this structure, pressure tends to concentrate on specific parts of the head, and there is a problem that the shape of the entire pillow is likely to collapse when turning over.

[0005] To solve such problems, a structure in which the inside of the pillow is divided into a plurality of compartments or a structure in which a plurality of layers are laminated has been proposed.

[0006] Patent Document 1 describes a pillow including a first layer having cushioning properties and a second layer overlapping the first layer and filled with a filling material.

[0007] In the second layer of Patent Document 1, in a plan view, a first portion, a second portion, and a third portion formed to extend in the lateral direction are formed to be arranged in this order in the longitudinal direction.

[0008] In Patent Document 1, the density of the filling material in the second layer is set to be smaller in the second portion than in the first portion and the third portion.

[0009] In one embodiment of Patent Document 1, the second portion is not filled with a filler material, and the surface of the second portion is recessed relative to the surfaces of the first and third portions, thereby positioning the ear in the second portion and reducing pressure on the ear.

[0010] The pillow described in Patent Document 1 aims to alleviate discomfort when the user turns over in their sleep, by having the above configuration.

[0011] Furthermore, because the first and third parts are separated by the second part, even if the user's shoulder rests on one part, the other part is less likely to become lower. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Japanese Patent Publication No. 2025-099903 [Overview of the Initiative] [Problems that the invention aims to solve]

[0013] However, the pillow described in Patent Document 1 has a two-layer structure in which the first layer and the second layer are laminated over the entire surface.

[0014] In such a two-layer structure, no substantial space is formed between the first and second layers, and the load from the user's head is directly transmitted to the first layer via the second layer.

[0015] Therefore, the load may not be adequately distributed and cushioned, and the pressure and discomfort felt on the head and neck may not be sufficiently reduced.

[0016] Patent Document 1 describes a design that relieves pressure on the ears through a density distribution in the planar direction or recesses within a single pillow, and does not create a three-dimensional relief for pressure on the head and neck.

[0017] In addition, since the concave portion of Patent Document 1 is formed in a predetermined shape, it is difficult to easily adjust the amount of sinking and the sense of support of the pillow according to the physique, preference, and sleeping posture of the user during use.

[0018] That is, since users with different physiques, large and small, use pillows with the same configuration, it has been difficult to provide an optimal sleeping comfort for all users.

[0019] Furthermore, in order to comprehensively reduce the sense of pressure, stuffiness, and grounding feeling not only around the ears but also on the entire head and neck, and to synergistically improve comfort, a composite configuration including the type of filling material and the selection of the material of the bag body is required.

[0020] The present invention has been made in view of the above circumstances.

[0021] The first problem to be solved by the present invention is to provide a comfortable and extremely excellent sleeping pillow that can realize three-dimensional and stepwise cushioning against head load and more effectively reduce the sense of pressure and discomfort received by the user's head and neck.

[0022] The second problem to be solved by the present invention is to provide a pillow that eliminates the pressure on the ears when turning over and lying on the side, and enables fine adjustment of the sleeping comfort and addition of functions by the user according to the user's physique and preference.

[0023] The above problems are also important from the viewpoint of compensating for the lack of adjustment freedom and three-dimensional pressure relief caused by the pillow described in Patent Document 1 mainly depending on the density distribution in the plane direction and the concave portion.

Means for Solving the Problems

[0024] The means for solving the problems of the present invention are as follows.

[0025] The pillow according to the present invention includes an upper pillow having a pair of bags filled with a filling material, and a lower pillow having a pair of bags filled with a filling material.

[0026] The upper pillow is formed by connecting the pair of bag bodies via a connecting portion.

[0027] The lower pillow is formed by connecting the pair of bag bodies via a connecting portion.

[0028] By adopting a two - layer structure in which the upper pillow is disposed above the lower pillow, in the state before use, clearly, a first space is formed between the user's head and the upper pillow, a second space is formed between the upper pillow and the lower pillow, and a third space is formed between the lower pillow and the installation surface.

[0029] Since the upper pillow is formed by connecting a pair of bag bodies via a connecting portion, each bag body has a substantially circular or substantially elliptical cross - section when filled with a filling material, and exhibits a shape curved upward and outward from the connecting portion as a starting point. That is, when looking at the upper pillow from the front, the pair of bag bodies form a valley shape on both the front and back surfaces at the position of the connecting portion, and rise in a mountain shape on both sides thereof.

[0030] Thereby, when looking at the upper pillow from the front, a valley - shaped space is formed between the pair of bag bodies, and this valley - shaped space becomes the first space for softly receiving the user's head.

[0031] In addition, since the bag bodies of the upper pillow and the bag bodies of the lower pillow each have a curved cross - sectional shape, a second space is formed between the upper pillow and the lower pillow, and a third space is formed between the lower pillow and the installation surface.

[0032] In a preferred form, each of the bag bodies of the upper pillow has, on the upper surface side, a recess capable of accommodating the auricle when lying on the side, and it is desirable that the recess is a depression formed on the upper surface of the bag body or a hole penetrating the bag body.

[0033] The recess can be used as a superordinate concept including, in addition to the mode formed as a depression, a mode in which it penetrates and becomes a hole when the depth is large.

[0034] Furthermore, it is preferable that the insertable body is detachably housed in the recess.

[0035] Furthermore, it is preferable to use microfiber cotton as the filler material to achieve both softness and resilience, thereby smoothing the deformation behavior from the first space to the third space.

[0036] It is preferable to use an elastic material as the fabric forming the bag to reduce the likelihood of the bag's deformation being hindered and to suppress pressure concentration. [Effects of the Invention]

[0037] The present invention can achieve the following effects.

[0038] The pillow of the present invention creates three spaces, a first space, a second space, and a third space, by combining the upper and lower pillows. This provides three-dimensional deformation room around the head and neck, reducing pressure and discomfort.

[0039] The first space is a valley-shaped area formed between the pair of pouches of the upper pillow, and it has the function of supporting the user's head by enveloping it with the pair of pouches.

[0040] The second space is the space formed between the upper and lower pillows, and functions as a buffer space that gradually transfers the load to the lower pillow when the upper pillow deforms under the load of the head.

[0041] The third space is the space formed between the lower pillow and the contact surface, and functions as a buffer space that mitigates the sinking of the entire pillow and suppresses the feeling of bottoming out.

[0042] These three spaces work synergistically to distribute and cushion the user's head load in multiple stages, providing support that adapts to changes in posture, thus improving the stability of the sleeping experience.

[0043] In the pillow described in Patent Document 1, since the first and second layers are laminated over the entire surface, the load is directly transmitted from the second layer to the first layer, resulting in a limited cushioning effect.

[0044] In contrast, the pillow of the present invention has three spaces that function as a multi-layered cushioning structure, which effectively reduces pressure and discomfort on the head and neck, and provides a comfortable pillow that offers superior sleeping comfort.

[0045] By providing a recess in the upper pillow's pouch, the first and second spaces function as pressure relief around the ears and head when the user turns over in their sleep. Combined with this, when the user turns over on their side, the ears are positioned in the recess, reducing localized pressure on the ears.

[0046] Because the recess is formed as a depression or through-hole, the ear is housed within the recess and less susceptible to pressure from the side of the head.

[0047] In particular, if the recess is formed as a through-hole, ventilation around the ear is also improved, thus reducing discomfort caused by stuffiness.

[0048] By inserting an insertable body into the recess, the amount of sinking can be easily changed according to the user's physique and preference.

[0049] In other words, compared to configurations that depend on a predetermined density distribution or concave shape, such as those in Patent Document 1, this design offers greater user adaptability and adjustability, allowing a single pillow to accommodate a variety of users.

[0050] By using microfiber cotton as a filler, the intertwining of fine fibers provides soft conformability and resilience, and does not easily hinder the escape of the three spaces.

[0051] By forming the bag body from an elastic material, the surface of the bag can easily deform to conform to the shape of the user's head, distributing pressure over a wider area and improving comfort.

[0052] Based on the above, the present invention encompasses the effect of reducing ear pressure during turning over in sleep as described in Patent Document 1, and through the synergistic effect of three-dimensional relief space, material selection, and adjustment mechanism, it can provide a more comfortable and pleasant pillow. [Brief explanation of the drawing]

[0053] [Figure 1] This is a perspective view illustrating the pillow according to Embodiment 1 of the present invention. [Figure 2] This is a plan view of the pillow according to Embodiment 1 of the present invention. [Figure 3] This is an explanatory diagram of the pillow according to Embodiment 1 of the present invention, viewed from the front, in its state immediately before use. [Figure 4] This is a side view of the pillow according to Embodiment 1 of the present invention. [Figure 5] This is a cross-sectional view along line AA in Figure 2. [Figure 6] This is an explanatory diagram showing the pillow of Embodiment 1 of the present invention in use, viewed from the front. [Figure 7] This is a perspective view illustrating the pillow of Embodiment 2 of the present invention. [Modes for carrying out the invention]

[0054] Hereinafter, embodiments for carrying out the present invention will be specifically described with reference to the drawings. In the attached drawings, identical components are denoted by the same reference numeral, and redundant explanations are omitted. The present invention is not limited to the embodiments described below, and can be modified as appropriate within the scope of the claims.

[0055] In the following explanation, the user is assumed to be lying on their back. The left-right direction of the user is referred to as the "lateral direction," and the direction from the user's head to their feet is referred to as the "longitudinal direction."

[0056] Furthermore, the direction perpendicular to the installation surface is called the "up and down direction," the direction away from the installation surface is called "upward," and the direction towards the installation surface is called "downward." [Examples]

[0057] Based on Figures 1 to 6, the pillow of Embodiment 1 of the present invention will be described.

[0058] [Overall structure]

[0059] Figure 1 is a perspective view illustrating the pillow according to Embodiment 1 of the present invention.

[0060] The pillow in this embodiment comprises an upper pillow 10 and a lower pillow 20 positioned below the upper pillow 10.

[0061] The upper pillow 10 and the lower pillow 20 are connected at their contact surface by, for example, hook-and-loop fasteners, although this is not shown in the illustration.

[0062] As shown in Figure 3, the lower pillow 20 is placed on the mounting surface L, and when in use, the upper pillow 10 is placed on top of the lower pillow 20.

[0063] As shown in Figure 1, the upper pillow 10 has a pair of bags 11 arranged side by side, a filling material 12 filled in each bag 11, a connecting portion 13 that connects the opposing sides of the pair of bags 11, and a recess 14 formed on the upper surface of each bag 11.

[0064] The lower pillow 20 has a pair of bag bodies 21 arranged side by side, a filling material 22 filled in each bag body 21, and a connecting part 23 that connects the opposing sides of the pair of bag bodies 21.

[0065] Figure 4 is a side view of the pillow according to Embodiment 1 of the present invention, showing the upper pillow 10 placed on top of the lower pillow 20, viewed from the right side.

[0066] As shown in Figure 4, the upper pillow 10 and the lower pillow 20 each have a roughly elliptical shape when viewed from the side.

[0067] [Upper pillow 10]

[0068] The detailed configuration of the upper pillow 10 will be explained based on Figures 1 and 2.

[0069] Figure 2 is a plan view of the pillow according to Embodiment 1 of the present invention, showing only the upper pillow 10 as viewed from above.

[0070] Each of the pair of bag bodies 11 is a bag-shaped member that contains a filler material 12 (see Figure 5) inside.

[0071] Each bag body 11 is formed by joining the peripheral edges of the fabric forming the top and bottom surfaces and the fabric forming the sides.

[0072] Here, "joining" includes sutures, heat sealing (welding), adhesives, etc.

[0073] Each bag 11, when filled with the filling material 12, takes on an upward-bulging, pillow-like shape.

[0074] As shown in Figure 1, each bag 11 has a roughly rectangular planar shape, and its upper surface is a convex curved surface that bulges upward due to the filling material 12.

[0075] The pair of bag bodies 11 are joined side by side via a connecting portion 13, forming an overall elongated shape.

[0076] As shown in Figure 2, in a plan view, the upper pillow 10 consists of a pair of bag-shaped bodies 11 arranged approximately symmetrically on the left and right sides of the connecting portion 13.

[0077] Figure 2 shows line AA, which indicates the lateral cross-sectional position passing through the recess 14 of the pair of bag bodies 11.

[0078] [Connection part 13]

[0079] The connecting portion 13 is the part that connects adjacent bag bodies 11.

[0080] The joint 13 is constructed by sutures, adhesives, or the like.

[0081] When the connecting portion 13 is constructed by suture, the pair of bag bodies 11 are more firmly joined, thus reliably preventing slippage during use.

[0082] The connecting portion 13 may be formed along the entire length of the opposing sides of the pair of bag bodies 11, or it may be formed only on a portion of the sides.

[0083] If the connecting portion 13 is formed only on a part of the side, a gap is created between the pair of bag bodies 11 in the part where the connecting portion 13 is not formed, and this gap functions as a ventilation channel, thereby improving breathability.

[0084] [Recess 14]

[0085] A recess 14 is formed approximately in the center of the upper surface of each bag 11.

[0086] In this specification, the term "recess 14" is a concept that encompasses both a depression (non-penetrating recess) formed on the upper surface of the bag 11, and a hole that penetrates the bag 11 in the vertical direction.

[0087] The reason for defining the recess 14 as a broader concept encompassing both "indentation" and "through-hole" is that increasing the depth of an indentation transitions it into a through-hole, and there is no essential structural difference between the two.

[0088] When the recess 14 is formed as a depression, the remaining filler 12 or the fabric on the lower side of the bag 11 at the bottom of the depression supports the user's head.

[0089] On the other hand, if the recess 14 is formed as a through hole, the upper surface of the lower pillow 20 or a member located below the bag 11 is exposed through the through hole, and the user's head is supported by these.

[0090] In this embodiment, the planar shape of the recess 14 is substantially rectangular, but it is not limited to this and can be circular, elliptical, square, polygonal, or any other shape.

[0091] The size of the recess 14 is preferably large enough to accommodate the user's ear, for example, one side or diameter of 3 cm or more and 10 cm or less, more preferably 4 cm or more and 8 cm or less.

[0092] The recess 14 allows for localized sinking in the contact area of ​​the head H and is provided in a location corresponding to where the ear is positioned when the user is lying on their side.

[0093] As a result, when the user is lying on their side with the side of their head resting on the upper surface of the bag 11, the ears are naturally housed within the recesses 14, reducing pressure on the ears.

[0094] [Filler 12]

[0095] The filler material 12 is filled inside each bag 11.

[0096] In this embodiment, the filler 12 is preferably microfiber cotton, which is a cotton-like material made of ultrafine fibers.

[0097] Microfiber cotton is lightweight yet provides excellent cushioning because its ultra-fine fibers intertwine in a complex way, forming numerous tiny air pockets.

[0098] When the user's head is placed on the bag 11, the microfiber cotton flexibly deforms to conform to the shape of the head, supporting it by enveloping it.

[0099] Furthermore, microfiber cotton has excellent resilience, returning to its original shape when the load is removed, allowing it to maintain a comfortable sleeping experience for a long period of time.

[0100] Furthermore, microfiber cotton has an air layer, making it excellent in both heat retention and breathability, and because it is made from synthetic fibers, it is hygienic as mites and mold are less likely to breed in it.

[0101] Furthermore, the filler material 12 is not limited to microfiber cotton, but can also be pipe beads, natural fibers (cotton, silk, etc.), polystyrene beads, feathers, adzuki beans, buckwheat hulls, latex chips, low-rebound urethane chips, polyethylene flakes, or composite materials thereof.

[0102] [material]

[0103] The fabric (side fabric) forming each bag 11 is preferably made of an elastic material.

[0104] For the outer fabric, it is preferable to use a stretchable material such as a woven fabric containing polyurethane elastic yarn, a knitted material, a stretch material, or a jersey knit material.

[0105] By using a stretchable outer fabric, the bag 11 deforms to conform to the shape of the user's head, making it less likely for the deformation of the bag to be hindered and thus suppressing pressure concentration.

[0106] Furthermore, when the user turns over in their sleep, the side fabric stretches and contracts to follow the movement of the head, reducing discomfort, and this, combined with the restorative force of the filling material 12, promotes shape recovery.

[0107] [Lower pillow 20]

[0108] The detailed configuration of the lower pillow 20 will be explained based on Figures 1 and 5.

[0109] The lower pillow 20 has a pair of bags 21, a filling material 22 filled in each bag 21, and a connecting part 23 that connects the pair of bags 21 together.

[0110] Each of the pair of bags 21 is formed in a bag shape from an elastic fabric, similar to the bag 11 of the upper pillow 10.

[0111] [Filler 22]

[0112] The filling material 22 of the lower pillow 20 is preferably microfiber cotton, similar to the filling material 12 of the upper pillow 10, but other filling materials can also be used.

[0113] Furthermore, the filling material 12 for the upper pillow 10 and the filling material 22 for the lower pillow 20 may be of different types.

[0114] For example, by using microfiber cotton as the filling material 12 for the upper pillow 10 and pipe beads as the filling material 22 for the lower pillow 20, a pillow that balances softness and support can be realized.

[0115] It is preferable that the bag body 21 of the lower pillow 20 is also made of an elastic material, similar to the bag body 11 of the upper pillow 10.

[0116] The connecting portion 23 can be constructed using the same connecting means as the connecting portion 13 of the upper pillow 10.

[0117] [Cross-sectional structure]

[0118] Figure 5 is a cross-sectional view along line AA in Figure 2.

[0119] As shown in Figure 5, a recess 14 is formed in the approximate center of each bag 11 of the upper pillow 10, extending inward from the top surface, and the inside of the recess 14 is not filled with filler material 12.

[0120] The depth of the recess 14 is such that the ear is adequately accommodated, and is preferably, for example, 1 cm or more and 10 cm or less.

[0121] [Formation of three spaces]

[0122] Figure 3 is an explanatory diagram of the pillow of Embodiment 1 of the present invention, viewed from the front, showing the state just before use, and illustrating the state just before the user's head H is placed on the upper pillow 10.

[0123] As shown in Figure 3, the pair of bag bodies 11 of the upper pillow 10 are each filled with the filling material 12, causing their cross-sections to bulge into a roughly circular or roughly elliptical shape.

[0124] Since the pair of bag bodies 11 are joined at the joint 13, they each exhibit a curved shape that extends outward and upward from the joint 13.

[0125] In other words, when the upper pillow 10 is viewed from the front, the pair of bag bodies 11 form a valley shape on both the front and back surfaces at the joint 13, and each side of it has a mountain-like shape.

[0126] Similarly, the pair of bag-like structures 21 of the lower pillow 20 also have a shape that bulges outward from the connecting portion 23.

[0127] This stacked structure of the upper pillow 10 and the lower pillow 20 creates three spaces: the first space 31, the second space 32, and the third space 33.

[0128] [First space 31]

[0129] The first space 31 is a relief space formed between the user's head H and the upper pillow 10, specifically above the vicinity of the joint portion 13 of the upper pillow 10.

[0130] The opposing edges of the pair of bag bodies 11 are connected by the joint 13, forming a valley-shaped space directly above the joint 13, defined by the upper surfaces of the pair of bag bodies 11, which becomes the first space 31.

[0131] The first space 31 gently supports the user's head H when it is placed on the upper pillow 10, enveloping it from both sides with a pair of bag-like bodies 11.

[0132] This distributes the load on the head H, preventing it from concentrating at a single point.

[0133] [Second space 32]

[0134] The second space 32 is a relief space formed between the upper pillow 10 and the lower pillow 20.

[0135] The upper pillow 10 and the lower pillow 20 are stacked in a shape that makes it difficult for them to come into surface contact with each other, and are formed by being locally supported near the center.

[0136] In particular, a second space 32 is prominently formed between the area directly below the joint 13 of the upper pillow 10 and the area directly above the joint 23 of the lower pillow 20.

[0137] The second space 32 functions as a buffer space that allows the upper pillow 10 to gradually approach the lower pillow 20 when it is displaced downward under the load of the head H, thereby mitigating the impact and pressure on the head H.

[0138] [Third space 33]

[0139] The third space 33 is a clearance space formed near the joint 23 of the lower pillow 20 and between it and the installation surface L.

[0140] Because the bag-like structure 21 of the lower pillow 20 bulges outward, a third space 33 is prominently formed directly below the joint 23.

[0141] The third space 33 functions as a buffer space that mitigates the sinking of the entire pillow, and because the lower pillow 20 approaches the mounting surface L in stages without making full contact with it, a multi-stage buffering effect is obtained for the entire pillow.

[0142] [Synergistic effect of three spaces]

[0143] The load on the user's head H is transmitted through a multi-stage path from the first space 31 to the third space 33, so that the load is distributed and buffered at each stage.

[0144] This reduces the reaction force from the mounting surface L that is transmitted to the user's head, thereby reducing the feeling of pressure.

[0145] Furthermore, the presence of three spaces allows the amount of compression in each space to change according to the shape and weight of the user's head, increasing the degree of freedom with which the pillow can deform to adapt to the individual user's physique.

[0146] Furthermore, the three spaces also function well as ventilation channels, and the second space 32 and the third space 33 in particular have good air circulation, which can help reduce stuffiness.

[0147] [Currently in use]

[0148] Figure 6 is an explanatory diagram showing the pillow of Embodiment 1 of the present invention in use, viewed from the front.

[0149] As shown in Figure 6, when in use, the head H is placed on the upper pillow 10, and the weight of the head H causes the pair of bag-like bodies 11 of the upper pillow 10 to deform and spread outwards, enveloping the head H.

[0150] At this time, the upper pillow 10 and the lower pillow 20 deform smoothly due to the microfiber cotton and the stretchable outer fabric, and the first space 31 to the third space 33 function as pressure relief.

[0151] As a result, pressure on the head and neck is distributed, and the feeling of bottoming out is suppressed.

[0152] Even during use, the first space 31 remains above and on both sides of the head H, and the second space 32 and third space 33 do not completely disappear, thus maintaining the cushioning effect and breathability.

[0153] [Sleeping on your back and on your side]

[0154] When lying on one's back, the back of the user's head sinks towards the first space 31, maintaining a stable posture, while the neck is supported by the periphery of the lower pillow 20, which does not overlap with the upper pillow 10, thus preventing excessive pressure.

[0155] When the user turns over to their side, although this is not shown in the diagram, the side of the head H rests on the upper surface of the bag 11, and the ears are positioned in the recess 14 formed approximately in the center of the bag 11.

[0156] The elastic properties of the bag body 11 and the microfiber cotton reduce discomfort when turning over in bed, and the recessed area 14 effectively reduces pressure on the ears. [Examples]

[0157] Based on Figure 7, the pillow of Embodiment 2 of the present invention will be described.

[0158] Figure 7 is an explanatory perspective view of the pillow according to Embodiment 2 of the present invention, showing the upper pillow 10 and the lower pillow 20 separated vertically, and before inserting the insert 15 into the recess 14.

[0159] The pillow of Example 2 has the same basic structure as the pillow of Example 1, but differs in that the insert 15 is configured to be detachably housed in recesses 14 formed in each bag 11 of the upper pillow 10.

[0160] [Insertion 15]

[0161] The insert 15 is a block-shaped member that is detachably inserted into the recess 14, and several types of inserts of different sizes (for example, a large insert 15 and a small insert 15) are available.

[0162] The user can select an insert 15 of an appropriate size according to their physique and preferences, and adjust the amount of indentation in multiple stages.

[0163] When a large insert 15 is inserted into the recess 14, the sinking of the head H is suppressed, and the sense of support and height can be increased.

[0164] When the insert 15 is removed from the recess 14, the relief provided by the recess 14 increases, resulting in the greatest amount of sinking and further reducing pressure on the ear when sleeping on one's side.

[0165] Furthermore, it is possible to create an asymmetrical configuration in which the presence or absence of the insert 15 is changed by the left and right recesses 14.

[0166] The material of the insert 15 can be an elastic material such as foam, gel, or fiber aggregate. For example, urethane foam, latex, a small bag filled with microfiber cotton, low-rebound material, high-rebound material, etc., can be used.

[0167] Furthermore, by incorporating aromatic materials such as lavender, deodorizing agents such as activated charcoal, or disinfectants into the insert 15, the pillow can be given additional functions such as relaxation and improved hygiene.

[0168] [Differentiation]

[0169] The above embodiments represent only a part of the embodiments of the present invention, and various modifications are possible without departing from the spirit of the invention.

[0170] The position of the recess 14 is not limited to the approximate center, but may be formed at a position biased toward the joint portion 13 side or the outer end, and multiple recesses may be provided on each bag 11.

[0171] Furthermore, the recess 14 may be provided in only one of the bag bodies 11, or the configuration may be such that the recess 14 is not provided.

[0172] The relative positions of the upper pillow 10 and the lower pillow 20 can be adjusted using hook-and-loop fasteners or the like provided on the contact surfaces.

[0173] The outer shapes of the upper pillow 10 and the lower pillow 20 are not limited to a roughly rectangular shape, but can be any shape such as a circle or polygon, and the upper and lower pillows may have different outer shapes.

[0174] The bags 11 and 21 may be provided with zippered openings so that the user can increase or decrease the amount of filling material. [Explanation of symbols]

[0175] 10 Upper pillow 11 Bag body 12 Filling material 13 Joint 14 recess 15 Insertion 20 lower pillow 21 bags 22 Filling material 23 Joint 31 First Space 32 Second Space 33 Third Space H head L Setting surface

Claims

[Claim 1] An upper pillow having a pair of bags filled with filling material, A lower pillow having a pair of bags filled with filling material, The upper pillow is constructed by connecting adjacent bag bodies, which are arranged side by side, via a connecting portion. The lower pillow is constructed by connecting adjacent bag bodies, which are arranged side by side, via a connecting portion. As the upper pillow is positioned above the lower pillow, a first space is formed near the joint of the upper pillow, a second space is formed between the upper pillow and the lower pillow, and a third space is formed near the joint of the lower pillow and between it and the mounting surface. Each of the upper pillow bags has a recess formed approximately in the center of its upper surface, which allows the ear to be placed in it when sleeping on one's side. The recess is detachably housed in the insert, A pillow characterized in that the amount of sinking can be adjusted for each of the left and right pouches by having the presence or absence of the insert differ between the left and right recesses, or by accommodating the insert selected from a plurality of types of inserts of different sizes for each of the left and right recesses.

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