JP2014068740A - Pillow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pillow that can allow a user to keep a comfortable posture in both a supine position and a recumbent position.SOLUTION: This is a pillow 1 having a bag-like pillow body 2 into which water is poured. The pillow body 2 includes: an occipital support part 40 that comes in surface contact with nearly the entire occipital region of a recumbent user facing upward; a cervical spine support part 70 that comes in surface contact with the part corresponding to the cervical spine; and a chin support part 60 that comes in surface contact with the part corresponding to the cheek bone and the mandible of a recumbent user facing laterally. In the working state, water is always interposed in the inner space of the pillow body 2, the inner space formed between the head/neck part of the user and the floor GL. Also, by the self-weight of the head/neck of the user, a state is developed in which an internal stress toward the contracting direction is generated at least in a part of the elastic membrane material comprising the upper surface of the pillow body 2.

Description

  The present invention relates to a pillow that supports a head when a person is sleeping, such as when sleeping.

  Sleep is an indispensable action for humans, and it is natural to consider making it as comfortable as possible. However, people often have discomfort such as neck pain (sleeping and cervical spine), temporomandibular joint disorders (pain when opening or chewing), headache, stiff shoulders, numbness of upper limbs, dizziness, etc. due to sleep. It has been known for a long time that the posture when a person sleeps is most preferably the same as the posture when the person stands upright. It is thought that it becomes easy to happen because of. Specifically, the head position is too high or too low, the angle is not normal, the cervical spine is strained, stress is concentrated at the contact with the pillow, and poor circulation It is thought that it is awake or the airway is not properly secured. For this reason, various pillows have been devised and disclosed in order to eliminate the above causes and to make sleep more comfortable.

  For example, the ergonomic pillow disclosed in Patent Document 1 is in a state where it lies on its head and neck in a state of lying on its side (hereinafter also referred to as a supine position) or in a state of lying on its side (hereinafter also referred to as a recumbent position). The unevenness is formed in advance, and the load applied to the head and neck is distributed by increasing the area supporting the head and neck.

  The pillow for infants disclosed in Patent Document 2 is formed of a synthetic resin having flexibility in a three-dimensional shape, and a liquid of about 35% of the maximum volume is sealed inside. As a result, a contact area of about 40% of the baby's head is obtained.

  In the water pillow disclosed in Patent Document 3, a bag body is formed by joining two films at the outer peripheral edge, and a recess is formed by joining the two films of the bag body at a substantially central portion.

  The head / neck support device disclosed in Patent Document 4 has a donut shape so as to support the head and neck of a newborn lying in a supine posture.

  The comfort pillow disclosed in Patent Document 5 has unevenness formed in advance, as in Patent Document 1.

  The infant pillow disclosed in Patent Document 6 is also provided with a crown support part, a neck abutting part, and a dent part to form irregularities.

  The pillow disclosed in Patent Document 7 connects the neck side portion supporting the neck portion and the head top side portion supporting the parietal side, and the neck side portion and the parietal side portion follow when lying from the supine position to the lying position. Support the head and neck.

  The hollow pillow disclosed in Patent Document 8 has a concave shape so as to support the head, and further a hollow space continues to the bottom, so that the mouth, ears, nose, It is the structure which does not press eyes and a face.

  The fluid bedding of Patent Document 9 is composed of a watertight bag body in which an elastic pair and a liquid are sealed in an upper part of an airtight bag body in which an elastic body and a gas are sealed, and mainly uses the buoyancy of the fluid. It is the structure which supports a human body (when using as a pillow, a head).

JP-A-11-266985 JP 2001-46202 A JP 2002-172128 A Japanese translation of PCT publication No. 2002-535019 Japanese Patent Laying-Open No. 2005-118397 JP 2006-239047 A JP 2010-63704 A Utility Model Registration No. 3164029 Japanese Patent No. 3630420

  However, for example, the conventional pillows related to Patent Document 3, Patent Document 4, and Patent Document 6 are presumed to be used in a supine position, and are not considered to be lying on their back. Further, regarding Patent Document 4, Patent Document 6, Patent Document 7, and Patent Document 8, since the head load concentrates on a part of the pillow even if it has elasticity, discomfort due to poor blood circulation or load bias. There is a possibility of holding. Furthermore, regarding patent document 5, patent document 6, patent document 7, patent document 8, and patent document 9, the material of the pillow is an elastic material, cotton, synthetic resin fiber, synthetic resin pipe, open cell sponge, etc. inside If the product is continuously used, the material may be deteriorated so that a sufficient function cannot be exhibited. In addition, since the non-fluid material is filled, there is a problem that when the head is placed, the surface of the pillow and the head are not sufficiently in surface contact, and the load on the head is concentrated on a part of the pillow. There is also. A pillow with low resilience that deforms the pillow surface in response to the shape of the human body is well known, but immediately after turning over, the shape of the previous posture remains on the pillow surface, and the pillow surface It may not be responsive and may not provide a comfortable sleeping experience. In the supine position, humans show a slight movement of the cervical spine in conjunction with the movement of the rib cage during breathing. Not provided.

  Further, regarding Patent Document 1, Patent Document 5, Patent Document 6, and Patent Document 9, the head can be supported so that the pillow is covered and the load can be distributed, but the occipital region covered with the pillow particularly in the supine position. Is almost completely shielded from the outside air, heat and sweat generated from the head may not be sufficiently dissipated, and ventilation to the scalp may be deteriorated. And the problem that the accumulation amount of the depressive heat in a head increases with progress of time arises. Furthermore, Patent Document 2 describes that the entire surface is covered with a highly hygroscopic cloth, and although there is a possibility that sweat generated from the head can be absorbed, the entire surface of the back of the head is almost covered. The possibility of poor ventilation to the scalp cannot be prevented. And about patent document 3, although it is related with the water pillow "for cooling the head" and it describes that at least one part of a bag is a moisture-permeable film, this was inject | poured into the bag body. It is intended to suppress the rise in temperature of the water pillow by evaporating the refrigerant and having an endothermic effect due to the heat of vaporization, and this also prevents sweat generated from the user's head from being sufficiently dissipated or the back of the head covered with a pillow. It cannot be expected to prevent the ventilation of the scalp from becoming worse.

  Therefore, the present invention can maintain a comfortable posture by immediately following the body movements during posture deformation, breathing or snoring based on the so-called Pascal principle in both the supine position and the lying position. Prevents the function from deteriorating due to the deterioration of the filling material, and can also sufficiently dissipate the heat of the head even in the supine position, while ensuring sufficient ventilation to the scalp and accumulation of depressive heat An object is to provide a pillow capable of dramatically reducing the amount.

  The present invention includes a bag-shaped pillow body provided with a water inlet and into which water is injected through the water inlet, and the user's head direction when the user's head is placed on the pillow body The pillow body is made of a stretchable membrane material, and is the upper surface of the pillow body in a state where water is injected, and is substantially in the center in plan view. The first upper surface side concave portion having a lower height than the surroundings is formed on the upper surface, and ridges are formed on both the left and right sides of the first upper surface side concave portion so as to protrude upward. The first upper surface side concave portion is coupled with a second upper surface side concave portion that is formed in the proximal direction from the first upper surface side concave portion, and the bottom portion of the second upper surface side concave portion extends from the first upper surface side concave portion. It is a curved portion that curves upward toward the base end of the pillow main body, and the bottom of the first upper surface side concave portion is the bottom of the pillow main body. The elastic membrane material constituting the upper surface of the pillow main body and the elastic membrane material constituting the lower surface are bonded to each other at the bottom portion, and the bottom portion bonded to the bottom portion. A vent hole penetrating in the vertical direction of the pillow body is formed, and the lower surface side concave portion is formed on the lower surface side of the pillow body and the periphery of the vent hole is inclined toward the hole edge of the vent hole, In the state where the pillow main body is placed on the floor and the user's head is placed, a gap is formed by the lower surface side concave portion between the hole edge of the vent hole and the floor surface. In addition, the inner peripheral surface portion of the first upper surface side concave portion is a rear head support portion that supports the rear head by making surface contact with the substantially entire surface of the user's rear head lying on the upper side, and the curved portion is on the upper side. A cervical vertebra support portion for supporting a portion of the user corresponding to the cervical spine in surface contact The raised portion is in surface contact with a portion corresponding to the cheekbone of the user lying on its side and in surface contact with the portion corresponding to the mandible of the user, corresponding to each of the cheekbone and the mandible. A chin support portion for supporting a portion of the pillow body formed between the user's head and a floor surface in a use state in which the user's head is placed on the pillow body. Water is present in the inner space, and the elastic membrane material constituting the first upper surface side concave portion of the pillow body, the elastic film material constituting the second upper surface side concave portion, and the raised portion are constituted. An object of the present invention is to provide a pillow characterized in that an internal stress in the shrinking direction is generated in at least a part of the stretchable membrane material.

  When the pillow body is in the supine position, an appropriate amount of water is always present in the pillow body between the user's head and neck and the floor, and the user's head and neck And a layer of water having a predetermined thickness formed between and the floor surface, and these are supported. Further, an internal stress in the contraction direction is generated in at least a part of the stretchable membrane material at the portion of the pillow main body as described above, and the head and the like are supported in this state. That is, in the above situation, based on the weight of the user's head, etc., the pillow body has a force to return to the original basic shape (the shape before the user's head, etc. is placed). This force is generated and acts on the contact surface of the pillow body with the user in the direction of the user (vertically upward), so that a lifting effect is produced. Moreover, the buoyancy of water is not utilized when supporting a head etc., and the said lifting effect is acting in the state which the hydrostatic pressure has generate | occur | produced in the pillow main body. Furthermore, since the inside of the pillow body is filled with water having fluidity, the surface of the pillow body immediately responds to body movements when turning over, or slight movements such as ribs and rib cage during breathing or snoring. Is deformed flexibly, and the effect of wrapping the contact portion by applying pressure evenly to the contact surface with the user is obtained by the so-called Pascal principle derived from the hydrostatic pressure in the pillow body. For example, in the supine position, the person shows a slight movement of the cervical vertebra in conjunction with the movement of the thorax during breathing, but the occipital region seen at that time descends toward the first upper surface side recess of the pillow body, As a result, even when the cervical spine moves up relative to the curved part of the pillow body, water flows smoothly and instantly to the part corresponding to the curved part by Pascal's principle, and appropriate surface contact with the corresponding part Surely support them. Therefore, the pillow of the present invention reacts immediately to such a fine human body movement, and can always optimally support the head and neck. In addition, the pillow shape has a function to flexibly respond to the physique difference or individuality of each user, so even if used by users of various physiques, the load on the surface of the head etc. Without concentrating on a certain place, the uncomfortable feeling at the time of sleep resulting from this can be prevented suitably.

  In addition, in the use state in the lying position of the pillow body, an appropriate amount of water is always present in the pillow body space between the user's chin and the floor, and the user's chin and floor The head is supported after a water layer of a predetermined thickness formed between the two is formed. More specifically, the raised portions are formed at portions corresponding to the cheekbones and mandibles of the user in the recumbent position, so that the respective portions are in surface contact with the raised portions and the load is constant. This part is favorably supported without concentrating on. In addition, such a configuration suitably prevents the mandible from falling from the normal position when the user is in a recumbent position, and also suppresses the protrusion of the jaw disk (cartilage) during temporomandibular disorders doing.

  Further, the bottom of the first upper surface side recess is defined at a position higher than the lower surface of the pillow body, and a lower surface side recess is formed on the lower surface side of the pillow body, and the pillow body is placed on the floor surface; An air gap is formed between the hole edge of the vent hole and the floor surface with the user's head placed thereon. In this way, a vent body is provided with a perforated pillow body, and ventilation to the user's occipital region is ensured through the vent hole.For example, every time the vent hole is opened due to turning over, the radiation around the occipital region is Convection is smooth and discomfort due to sweating of the back of the head can be prevented. Moreover, the heat generated from the user's back and neck is conducted by the water filled in the pillow body, and the heat can be suitably absorbed. For this reason, the accumulation amount of the depression heat in the head can be drastically reduced. Furthermore, the lowermost end portion of the head in the supine position is disposed in the ventilation hole, so that the lowermost end portion is not in contact with the pillow body or the floor surface, and the periphery of the lowermost end portion is a pillow. It will be in the state suspended by the elastic membrane material which comprises a 1st upper surface side recessed part in surface contact with a main body. For this reason, stress concentration on the occipital surface is more reliably avoided, and the user does not feel uncomfortable during sleep or the like.

  As described above, the present invention does not support the user's head and neck with water (fluid) buoyancy, but supports it with a pillow body in which internal hydrostatic pressure and internal stress in the contraction direction are generated. This is a major feature.

  Further, in the above-described configuration, the height H1 from the floor surface to the apex of the raised portion and the height H2 from the floor surface to the center of the vent hole in the use state are H1: H2 = 2: 1. It is 3: 1 and the H2 is preferably 15 mm to 65 mm.

  By adopting such a configuration, a sufficient amount of water is always present in the interior of the pillow body formed between the user's head and neck and the floor surface in use, and is appropriate for use. Hydrostatic pressure is generated. Moreover, when the user is in the supine position or in the lying position, the user can maintain the same posture as when the user is standing upright, without placing a burden on the user's spine, and in a supine position. Or, a recumbent posture is obtained.

  In addition, the head is not placed on the pillow body into which water has been injected and the head is not placed on the axis, passing through the center of the vent hole and extending from the base end to the tip end of the pillow body. The distance S1 from the center to the tip of the pillow body and the distance S2 from the center of the vent hole to the base end of the pillow body are preferably S1 ≦ S2.

  As in such a configuration, by setting at least the distance S2 to be equal to or greater than the distance S1, the height from the floor surface in the curved portion corresponding to the distance S2 when water is injected into the pillow body corresponds to the distance S1. The height can be set equal to or higher than the height of the highest position from the floor surface. In short, if the distance S2 is set within the above range and the position of the vent hole is decentered to the middle of the pillow body or slightly closer to the tip, when the pillow body into which water has been injected is placed on the floor surface, Part, that is, a sufficient amount of water is present in the interior of the pillow main body at a portion corresponding to the cervical support part, and thereby the height of the cervical support part from the floor surface is higher than the first upper surface side recessed part. This is sufficiently ensured as compared with the site formed in the parietal direction, and thereby it is possible to generate a hydrostatic pressure sufficient to support the neck at the portion. In addition, by setting the height of the cervical vertebra support portion to a desired value, it is possible to appropriately support the neck of the user in the supine position so as to maintain a posture similar to the upright posture. In addition, since the support object does not exist in the site | part formed in a crown direction from the 1st upper surface side recessed part unlike the said bending part, required height is not requested | required like this bending part. Therefore, by setting the distance S2 within the above range, the required height is secured for the portion corresponding to the cervical spine of the user in the supine position without unnecessarily increasing the amount of water in the pillow body, and the portion is preferably supported. Thus, the burden on the head can be reduced. In addition, the cervical vertebra becomes slightly in use, and the back of the head is lowered toward the first upper surface side recess of the pillow body, and as a result, the cervical vertebra moves up with respect to the curved portion of the pillow body. Even if it exists, water can flow smoothly and smoothly to the site | part corresponding to a curved part by the Pascal principle, and a surface contact can be maintained appropriately with a corresponding site | part.

  A bag body having an outer edge fixed to the pillow body is disposed on the lower surface of the pillow body, and the bag body has an inlet, and fluid is injected through the inlet. It is desirable that

  In such a configuration, the thickness of the bag body can be changed and the height of the pillow body can be freely changed by changing the amount of fluid injected into the bag body.

  From the pillow body, a bag body into which liquid has been injected is inserted, and the bag body is folded, so that the bag body is placed on the user's head placed on the pillow body. It should be possible.

  In such a configuration, for example, by using the liquid as a cooling agent such as ice water, the user's head (for example, the eyes) can be cooled to ensure comfortable sleep.

  It is desirable that the main part of the curved surface constituting at least one of the occipital region support part, the chin support part, and the cervical vertebra support part is constituted by a part of a secondary curved surface before use.

  When the curved surface is constituted by a gentle secondary curved surface, the internal pressure of the pillow body is made more uniform than that formed by a shape having an acute convex surface or concave surface, and approximately a quadratic curved surface It is possible to reasonably make contact with each surface of the head and neck or jaw of a human body that is considered to be constituted by.

  The pillow of the present invention can maintain a comfortable posture in the supine position or the recumbent position without relying on the buoyancy of water, the load does not shift to one place, prevents functional deterioration due to deterioration of the filling, Further, even in the supine position, the heat of the head can be sufficiently dissipated and sufficient ventilation can be secured to the scalp. Also, discomfort due to sweating of the back of the head can be prevented.

It is a pillow of Example 1, Comprising: (a) is a top view, (b) is a front view. (A) is the sectional view on the AA line in Fig.1 (a), (b) is the sectional view on the BB line in Fig.1 (a). It is a figure which shows the state which used the pillow of Example 1 in the supine position, Comprising: (a) is a top view, (b) is CC sectional view taken on the line of (a). It is a figure which shows the state which used the pillow of Example 1 in the lying position, Comprising: (a) is a top view, (b) is DD sectional drawing of (a). It is a pillow of Example 2, Comprising: (a) is a bottom view, (b) is a side view. The sectional side view of the pillow of Example 3.

  Hereinafter, the Example which actualized the pillow of this invention is described in detail. In addition, this invention is not limited to the Example shown below, A design change is possible suitably.

[Example 1]
The pillow 1 of Example 1 is shown in FIGS. For the sake of explanation, the top direction of the user h when the head of the user h is placed on the pillow 1 is the distal direction, and the neck direction of the user h is the proximal direction.

  The pillow 1 is composed of a bag-shaped pillow body 2 into which water can be injected, and a water inlet 3 is provided on the lower surface side of the pillow body 2.

  The pillow body 2 is made of a synthetic resin film material that is impermeable and stretchable. As the stretchable membrane material, for example, synthetic rubber materials such as acrylic rubber, nitrile rubber, urethane rubber, and polyurethane can be selected, but are not particularly limited as long as the conditions of the present invention are satisfied. .

Next, the external shape of the pillow main body 2 filled with water through the water inlet 3 will be described.
A first upper surface side concave portion 4 having a height lower than that of the periphery on the upper surface is formed on the upper surface of the pillow main body 2 in the approximate center in plan view. And the protruding part 6 is formed in the left-right both sides of this 1st upper surface side recessed part 4 so that it may protrude upwards.

  Further, the first upper surface side concave portion 4 is coupled with a second upper surface side concave portion 5 formed from the first upper surface side concave portion 4 toward the proximal direction. The bottom surface of the second upper surface side concave portion 5 is curved upward and convex from the first upper surface side concave portion 4 toward the base end of the pillow body 2, and the curved portion 7 is formed at the bottom of the second upper surface side concave portion 5. Is formed.

  Further, the bottom portion 4 a of the first upper surface side concave portion 4 is set at a position higher than the lower surface of the pillow body 2. And in this bottom part 4a, the elastic membrane material which comprises the upper surface of this pillow main body 2, and the elastic membrane material which comprises a lower surface are adhere | attached. Further, a vent hole 8 penetrating in the vertical direction of the pillow main body 2 is formed in the bonded bottom portion 4a, and on the lower surface side of the pillow main body 2, the periphery of the vent hole 8 is the passage. A lower surface side recess 9 is formed to be inclined toward the hole edge of the pore 8. As will be described later, when the pillow main body 2 is placed on the floor surface GL and the user's h head is placed, the lower surface side concave portion 9 causes the holes 8 in the vent hole 8 to be opened. A gap is formed between the edge and the floor surface GL (see FIG. 3).

  Then, as shown in FIG. 3, the occipital region support portion in which the inner peripheral surface portion of the first upper surface side recessed portion 4 is in surface contact with the substantially entire surface of the occipital region of the user h lying in the supine position and supports the occipital region. The curved portion 7 of the second upper surface side concave portion 5 is a cervical vertebra support portion 70 that is in surface contact with a portion corresponding to the cervical vertebra of the user h in the supine position and supports the portion. Further, as shown in FIG. 4, the raised portion 6 is a jaw support portion 60 that makes surface contact with and supports a portion corresponding to the cheekbone and mandible of the user h in the recumbent position.

  In addition, the main part of the curved surface which comprises the said back head support part 40 of the said pillow main body 2 before the use in a present Example, the said jaw support part 60, and the said cervical vertebra support part 70 is based on what is called a quadric surface. It is configured. Thereby, the internal pressure of the pillow main body 2 can be made more uniform with respect to the user h and brought into surface contact. For example, the surface of the back head support part 40 is mainly configured by a part of a conical surface. Further, the surface of the chin support 60 before use is mainly constituted by a part of an elliptical surface. Further, the surface of the cervical vertebra support part 70 before use is mainly constituted by a part of an elliptical cylindrical surface or a monolobal hyperboloid. Furthermore, the main parts of the curved surfaces constituting the occipital head support part 40, the chin support part 60, and the cervical vertebra support part 70 of the pillow body 2 in the use state (after placement on the head part) also have a quadratic curved surface. It is thought that it will be a shape that includes. For example, in the supine position, the surface of the occipital support 40 is mainly constituted by a part of an elliptic paraboloid. In the recumbent position, the surface of the chin support 60 is mainly constituted by a part of a bilobal hyperboloid. In the supine position, the surface of the cervical vertebra support part 70 is mainly constituted by a part of a hyperbolic paraboloid.

  In the use state, the pillow 1 always has a sufficient amount of water to generate hydrostatic pressure in the interior of the pillow body 2 formed between the head and neck of the user h and the floor GL. Intervene (excluding the part corresponding to the inside of the vent hole 8). Further, due to the weights of the head and neck of the user h, the elastic membrane material constituting the first upper surface side concave portion 4 of the pillow body 2 and the elastic membrane material constituting the curved portion 7 of the second upper surface side concave portion. In addition, an internal stress in the contraction direction is generated in at least a part of the stretchable film material constituting the raised portion 6. At this time, the pillow body 2 is maintained in a stable manner without moving with respect to the floor surface GL because the shape of the lower part of the pillow 1 is substantially maintained even when the posture of the user h changes.

  On the other hand, the contact portion between the user h and the pillow body 2 is immediately deformed following the change in the posture of the user h, and the portion that contacts the user h when the posture of the user h is stabilized. In this case, the hydrostatic pressure is equalized, and the head is stably supported while maintaining a state where tension is generated in the stretchable membrane material. In addition, based on the so-called Pascal principle, the portion of the pillow body 2 that comes into contact with the user h immediately responds to body movements when turning over or slight movements such as the rib cage during breathing or snoring. Deforms flexibly. Specifically, in the supine position, the person shows a slight movement of the cervical vertebra in conjunction with the movement of the thorax during breathing, but the occipital region seen at that time is in the first upper surface side recess 4 of the pillow body 2. Even when the cervical vertebra moves downward with respect to the curved portion 7, the water smoothly flows immediately to the portion corresponding to the curved portion 7 and appropriately contacts the corresponding portion. Surely support them.

  Further, since the ventilation hole 8 is provided to ensure ventilation with respect to the occipital region of the user h, for example, each time the ventilation hole 8 is opened due to turning over, the radiation and convection around the occipital region are smoothed. Can prevent discomfort caused by sweating. Moreover, since the heat generated from the back and neck of the user h is conducted to the water filled in the pillow body 2, the heat can be suitably absorbed. Thereby, the accumulation amount of the depression heat in the head can be dramatically reduced. Furthermore, the lowermost end portion of the head is arranged in the vent hole 8 so that the lowermost end portion is not in contact with the pillow body 2 or the floor surface GL, and the periphery of the lowermost end portion is a pillow. The head itself is suspended by the stretchable membrane material that makes surface contact with the main body 2 and constitutes the first upper surface side recess 4. For this reason, stress concentration on the surface of the head is further avoided.

  In this embodiment, the height H1 from the floor surface GL to the apex of the raised portion 6 is 30 mm, the height H2 from the floor surface GL to the center of the vent hole 8 is 15 mm, and H1: H2 = 1: 2. The optimum heights H1 and H2 vary among individuals, but are generally H1: H2 = 2: 1 to 3: 1, and the H2 is within a range of 15 mm to 65 mm (applicable for children to adults) Is set as appropriate. Configurations outside this range do not match the user's physique, the water layer is not properly formed in the pillow body, or the membrane tension of the stretch membrane material (internal stress in the shrinking direction) occurs. I will not do it.

  The user h who uses the pillow 1 having the dimensions in the above range can maintain the posture almost the same as the upright posture when used in the supine position or the lying position. In the recumbent position, the lower jaw is prevented from dropping with respect to the center axis CL of the face. That is, by selecting a dimension that satisfies the above-described conditions, a shape that can maintain the most stable head position can be obtained, and a pillow 1 that secures a sufficient amount of water to maintain it can be configured. It becomes possible.

  Further, as shown in FIG. 1 and the like, the pillow body extends from the center of the vent hole 8 on the horizontal axis L passing through the center of the vent hole 8 and extending from the base end to the tip end of the pillow body 2. It is desirable that the distance S1 to the distal end of the body and the distance S2 from the center of the vent hole 8 to the proximal end of the pillow body 2 satisfy S1 ≦ S2.

  By setting it as this structure, when water is poured into the pillow main body 2, the height from the floor surface GL in the curved portion 7 corresponding to the distance S2 is the highest from the floor surface GL among the portions corresponding to the distance S1. With respect to the height of the high position, it is possible to determine the same height or higher.

[Example 2]
The pillow 10 of Example 2 is shown in FIG.
The pillow 10 is provided with a bag body 11 having an outer edge partially fixed (welded) to the pillow body 2 on the lower surface of the pillow body 2 of the pillow 1 of the first embodiment. 11, an inlet 11a is provided, and air is injected through the inlet 11a.

  The pillow 10 can adjust the thickness of the bag body 11 by changing the amount of air injected into the bag body 11, whereby the height of the pillow body 2 during use can be finely adjusted. it can. Note that water may be injected instead of air.

Example 3
The pillow 20 of Example 3 is shown in FIG.
In the pillow 20, the bag body 12 is extended from the pillow body 2. Water or ice water is injected into the bag body 12, and the bag body 12 is folded back to the head side of the user h, so that the user's h head placed on the pillow body 2 ( For example, it can be placed on the head).

  As described above, the user's h head can be cooled by placing the bag 12 on the user h's head. In addition, the front-end | tip of this bag body 12 may be provided with the notch part by which the user's h nose is arrange | positioned.

The pillows 1, 10, and 20 described so far can be variously modified.
For example, the pillow body 2 may be partitioned into a plurality of (for example, center, left and right) compartments, and an appropriate amount of water may be injected into each compartment. With this configuration, the height of the required position can be finely adjusted by adjusting the amount of water in each compartment.

  Alternatively, a separate bag body may be inserted into the pillow body 2 and the air chamber may be configured by the bag body. By setting it as this structure, the total amount of water which should be inject | poured into the pillow main body 2 can be reduced, the desired external appearance shape of the pillow main body 2 can be ensured, and the weight of the pillow 1,10,20 when water is inject | poured is made small. It becomes possible to do.

  Moreover, it is also possible to combine the said bag bodies 11 and 12 suitably. In addition, the shape and size of the entire pillow can be appropriately set according to adults, children, and the like. Further, water or hot water containing ice may be injected into the bag body 2 or water containing other things may be injected.

Claims (6)

A water inlet is provided, and a bag-shaped pillow body into which water is injected through the water inlet,
The user's head direction when the user's head is placed on the pillow body is the distal direction, the user's neck direction is the proximal direction,
The pillow body is made of an elastic membrane material,
Further, a first upper surface side recess having a lower height than the surroundings is formed on the upper surface of the upper surface of the pillow body in a state where water has been poured, and at a substantially central position in plan view. A raised part is formed on both sides so as to rise upward,
Further, the first upper surface side concave portion is coupled with a second upper surface side concave portion formed in the proximal direction from the first upper surface side concave portion, and a bottom portion of the second upper surface side concave portion is the first upper surface side concave portion. It is a curved part that curves upwardly from the upper surface side concave part toward the base end of the pillow body,
In addition, the bottom of the first upper surface side recess is determined at a position higher than the lower surface of the pillow main body, and the bottom of the elastic film material that forms the upper surface of the pillow main body and the elastic film material that forms the lower surface of the pillow main body. Is formed in the bonded bottom portion, and a ventilation hole penetrating in the vertical direction of the pillow main body is formed. Inclined toward the hole edge to form a recess on the lower surface side, the pillow body is placed on the floor surface, and the user's head is placed between the hole edge of the vent hole and the floor surface. A void is to be formed by the lower surface side recess,
Further, the inner peripheral surface portion of the first upper surface side concave portion is a occipital region support portion that supports the occipital region in surface contact with the substantially entire surface of the occipital region of the user lying on the upper side,
The curved portion is a cervical vertebra support portion that supports a portion corresponding to the cervical vertebra of the user who is lying on the upper surface and supports the portion,
The ridge is in surface contact with a portion corresponding to the cheekbone of the user lying on its side, and is in surface contact with the portion corresponding to the user's mandible and corresponding to each of the cheekbone and each of the mandible Chin support part that supports
In the use state where the user's head is placed on the pillow body, water is interposed in the interior of the pillow body formed between the user's head and the floor, At least one of an elastic membrane material constituting the first upper surface side concave portion of the pillow body, an elastic membrane material constituting the second upper surface side concave portion, and an elastic membrane material constituting the raised portion. A pillow characterized in that internal stress in the contraction direction is generated in the part. In use, a height H1 from the floor surface to the top of the raised portion, and a height H2 from the floor surface to the center of the vent hole are as follows:
H1: H2 = 2: 1-3: 1
And
The pillow according to claim 1, wherein the H2 is 15 mm to 65 mm. The head is not placed on the pillow main body into which water has been injected, and the head passes through the center of the vent hole and extends from the center of the vent hole to the tip of the pillow main body. The distance S1 to the tip of the pillow body and the distance S2 from the center of the vent hole to the base end of the pillow body are:
S1 ≦ S2
The pillow according to claim 1 or 2, wherein the pillow is. A bag body having an outer edge fixed to the pillow body is disposed on the lower surface of the pillow body, and the bag body has an inlet, and fluid is injected through the inlet. The pillow according to any one of claims 1 to 3. From the pillow body, a bag body into which liquid has been injected is inserted, and the bag body is folded, so that the bag body is placed on the user's head placed on the pillow body. The pillow according to any one of claims 1 to 4, which is enabled. The main part of the curved surface constituting at least one of the occipital region support part, the chin support part, and the cervical vertebra support part is constituted by a part of a secondary curved surface before use. The pillow according to any one of claims 5 to 6.

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