pillow

Abstract

The pillow (1) of the present invention with elastic rebound force is characterized in that: a low part (8) is provided in the part facing the neck (NC) of the supine person, which is recessed so as not to compress the cervical vertebrae (C1 to C4) of the supine person due to the elastic rebound force of the pillow (1); a middle part (10) is provided above the low part (8) and on the left and right sides of the low part (8), the left and right sides of the cervical vertebrae (C1 to C4) of the supine person are supported by the elastic rebound force of the pillow (1); and a high part (9) is provided above the middle part (10) and on the left and right sides of the middle part (10), the posterior belly of the digastric muscle (PDM) of the supine person is pressed by the elastic rebound force of the pillow (1).

Description

Technical Field

[0001] This invention relates to pillows, and more particularly to the function of a pillow that makes breathing easier for the user. Background Technology

[0002] Being able to breathe easily even in a sleeping position is essential for sleep quality. Therefore, pillows need to have the function of making breathing easy for the user. In particular, for easy breathing in a supine position, the angle of the head needs to be maintained at an appropriate value. If the head is excessively flexed forward (i.e., the jaw is excessively depressed), the airway will be compressed, which may lead to breathing difficulties; conversely, if the head is excessively flexed backward (i.e., the jaw is excessively tilted upward), the base of the tongue will sink into the throat, which may lead to sleep apnea. Therefore, for example, Patent Document 1 discloses a pillow that supports from the neck to the back of the head, reducing the support force on the back of the head, thereby preventing the jaw from being depressed.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-81248 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, when a person lying on their back inhales, air flows from the trachea into the lungs. At this time, the muscles at the base of the tongue (the linguistic muscles) tense to keep the trachea open. Additionally, the muscles of the jaw also work, lifting the jaw upwards. This expands the trachea, allowing for smooth breathing.

[0008] During exhalation, air from the lungs is expelled through the trachea to the outside. At this time, the muscles at the base of the tongue relax, but the trachea remains open and does not narrow. In addition, the muscles of the jaw also relax, and the jaw returns to its natural state.

[0009] In other words, breathing causes the jaw muscles of a supine person to contract and expand, which helps to keep the trachea properly open.

[0010] However, when the posterior belly of the digastric muscle, which is part of the mandibular muscle, becomes excessively relaxed due to age or other factors, the mandible is compressed downwards in a supine person. As a result, the hyoid bone descends, and the descended hyoid bone compresses the anterior trachea, narrowing the trachea and causing difficulty in breathing, as has been observed.

[0011] Therefore, the present invention provides a pillow that improves the aforementioned breathing difficulties and enables comfortable sleep.

[0012] Technical means to solve the problem

[0013] The pillow of the present invention is a pillow with elastic rebound force, characterized in that the pillow is provided with the following portions in the part facing the neck of a supine person: a low portion, which is recessed so as not to compress the cervical spine of the supine person due to the elastic rebound force of the pillow; a middle portion, which is higher than the low portion and on the left and right sides of the low portion, supports the left and right sides of the cervical spine of the supine person by the elastic rebound force of the pillow; and a high portion, which is higher than the middle portion and on the left and right sides of the middle portion, presses the posterior abdomen of the digastric muscles of the supine person by the elastic rebound force of the pillow.

[0014] Furthermore, in this invention, "pressing...the posterior belly of the digastric muscle" not only means pressing the posterior belly of the digastric muscle directly with its high part, but also includes indirect pressing of the posterior belly of the digastric muscle via a muscle located on the side (near the anterior) of the high part of the posterior belly of the digastric muscle. For example, the sternocleidomastoid muscle, which attaches to the mastoid process of the temporal bone, is located on the side (near the anterior) of the high part of the posterior belly of the digastric muscle. Pressing the sternocleidomastoid muscle on the side attached to the mastoid process of the temporal bone with its high part can also press the posterior belly of the digastric muscle.

[0015] Invention Effects

[0016] The pillow of this invention, by employing its elastic rebound force to press against the high part of the posterior belly of the digastric muscle in a supine person, can inhibit excessive relaxation of the posterior belly of the digastric muscle, thereby preventing jaw depression, hyoid bone descent, and tracheal narrowing caused by the hyoid bone. Therefore, it can maintain an open trachea, thus improving breathing difficulties. Furthermore, it prevents the mouth from opening, thus also having the advantage of preventing snoring and sleep apnea.

[0017] In addition, by setting a low position that does not compress the cervical spine of a supine person, the risk of cervical disc herniation or cervical spondylosis can be reduced.

[0018] Furthermore, by using the elastic rebound of the pillow to support the midpoint of the cervical spine on both sides of a supine person, the risk of neck stiffness can be avoided. That is, if there is no support around the cervical spine, neck stiffness will occur. When the neck is stiff, in addition to easily accumulating fatigue, breathing will also become shallow, which can cause difficulty breathing. However, by setting the aforementioned midpoint, this situation can be prevented.

[0019] Thus, the pillow of the present invention can improve breathing difficulties, and in addition, it will not cause neck stiffness, reducing the risk of cervical disc herniation or cervical spondylosis, thereby enabling comfortable sleep. Attached Figure Description

[0020] Figure 1A It is a three-dimensional diagram of the human skull.

[0021] Figure 1B It's a picture of the back of a person's head.

[0022] Figure 2 This is a perspective view of a pillow according to an embodiment of the present invention.

[0023] Figure 3 This is a rear view showing the correspondence between the pillow according to an embodiment of the present invention and a person's head and neck.

[0024] Figure 4 yes Figure 3 A sectional view along line AA.

[0025] Figure 5 This is a perspective view of a pillow according to another embodiment of the present invention. Detailed Implementation

[0026] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1A It is a three-dimensional diagram of the human skull. Figure 1B It is a three-dimensional diagram of the back of a human head.

[0027] exist Figure 1A , Figure 1B In this diagram, HD represents the human head, SA represents the occipital bone, SA1 is the external occipital protuberance, SA2 is the area between the superior and inferior nuchal lines of the occipital bone, SA3 is the area on the vertex side of the occipital bone, SA4 is the superior nuchal line, SA5 is the inferior nuchal line, SA6 is the inferior line of the occipital bone, and SA7 is the area from the left end of the trapezius muscle attached to the occipital bone to the portion of the left sternocleidomastoid muscle attached to the occipital bone (the designated area on the left side) and from the right end of the trapezius muscle attached to the occipital bone to the right end of the trapezius muscle attached to the occipital bone. The area between the lateral sternocleidomastoid muscles (the designated area on the right side), SB is the parietal bone, SB1 is the occipital side of the parietal bone, SC is the temporal bone, SC1 is the mastoid process, MA is the temporalis muscle, MB is the sternocleidomastoid muscle, MB1 is the attachment of the sternocleidomastoid muscle, MBP is the left and right sternocleidomastoid muscles attached to the occipital bone, TR is the trapezius muscle, TR1 is the left end of the trapezius muscle, TR2 is the right end of the trapezius muscle, NC is the human neck, C1 to C7 are the first to seventh cervical vertebrae.

[0028] Figure 2 This is a perspective view of pillow 1 according to an embodiment of the present invention. Figure 3 This is a rear view showing the correspondence between the pillow 1 according to an embodiment of the present invention and the human head (HD) and neck (NC). Figure 4 yes Figure 3 A sectional view along line AA.

[0029] Figure 3 , Figure 4The X, Y, and Z axes shown are orthogonal to each other. In this embodiment, the X-axis direction is the vertical direction of the pillow 1, which is aligned with the height of the supine person; X1 is upward, and X2 is downward. The Y-axis direction is the horizontal direction of the pillow 1, with Y1 to the left and Y2 to the right. Furthermore, the Z-axis direction is the front-to-back thickness (height) direction of the pillow 1, with Z1 to the front and Z2 to the back.

[0030] exist Figure 3 , Figure 4 In this context, DM refers to the digastric muscle. The digastric muscle DM is divided into anterior and posterior bellies. The anterior digastric muscle (ADM) begins at the mandible (LJB) and attaches to the hyoid bone (HB) via the intermediate digastric tendon. The posterior digastric muscle (PDM) begins at the mastoid process (SC1) and attaches to the hyoid bone (HB) via the intermediate digastric tendon. UJB is the maxilla.

[0031] First, the technical features of pillow 1 will be explained.

[0032] Pillow 1 Figures 2-4 As shown, (1A) is a pillow 1 with elastic resilience. (1B) A low part 8 is provided at the position opposite to the neck NC of the supine person, which is recessed so as not to compress the cervical vertebrae of the supine person (in this embodiment, the first cervical vertebra C1 to the fourth cervical vertebra C4) due to the elastic rebound force of the pillow 1. (1C) The middle part 10, located above the lower part 8 and on both sides of the lower part 8, is supported by the elastic rebound force of the pillow 1 on both sides of the cervical vertebrae C1 to C4 of the supine person; and (1D) The high part 9, which is higher than the middle part 10 and on the left and right sides of the middle part 10, is pressed by the elastic rebound force of the pillow 1 against the posterior abdominal PDM of the supine person.

[0033] Additionally, pillow 1, as Figure 2 As shown in Figure 6, it has: (2A) The main support portion 11, located above the height direction of the aforementioned high portion 9 (in the X1 direction of the figure), is made of elastic polyurethane foam and applies pressure to at least the following areas in the region SA2 between the superior nuchal line SA4 and the inferior nuchal line SA5 of the occipital bone SA of a supine person, and provides planar support: the region SA7 between the left end TR1 of the portion where the trapezius muscle TR attaches to the occipital bone SA and the portion where the left sternocleidomastoid muscle MBP attaches to the occipital bone SA (hereinafter also referred to as the "left-side designated region"), and the region SA7 between the right end TR2 of the portion where the trapezius muscle TR attaches to the occipital bone SA and the portion where the right sternocleidomastoid muscle MBP attaches to the occipital bone SA (hereinafter also referred to as the "right-side designated region"); and (2B) The secondary support 12 is located above the main support 11 in the height direction X1 and is made of elastic polyurethane foam. The support height is set lower than that of the main support 11. It applies pressure and supports the head of the person who is closer to the top of the head than the upper line SA4.

[0034] Next, use Figures 2-4 Further explanation of pillow 1.

[0035] like Figures 2-4 As shown, pillow 1 is a rectangular plate-shaped structure configured to support the head HD of a supine person at the center of the front surface of pillow 1, and to support the neck NC of the person at the lower side of the center of the front surface of pillow 1 (in the X2 direction of the figure). Additionally, as... Figure 3 As shown, pillow 1 has a symmetrical structure.

[0036] The pillow 1 is configured to have a rear base 2, a front lower base 3, a front upper base 4, a pair of left and right high-position parts 5, a pair of left and right lateral restraint parts 6, and a main restraint part 7.

[0037] The rear base 2 is made of a rectangular plate-shaped elastic polyurethane foam with the same shape as the pillow 1 when viewed from the front surface side.

[0038] The front lower base 3 is formed by cutting a low-position portion 31 on a rectangular plate-shaped elastic polyurethane foam that is thicker (higher) than the rear base 2 and covers the lower part of the front surface side (lower than the central part of the front surface side). The front lower base 3 is configured to be bonded and fixed in a state of overlapping with the lower part of the front surface side of the rear base 2. The left and right central portions of the front lower base 3 are located below the central portion of the pillow 1, so that the upper part of the left and right central portions of the front surface side of the front lower base 3 is between the superior nuchal line SA4 and the inferior nuchal line SA5 of the occipital bone SA of a supine person. The area SA2 faces each other. In addition, the lower part of the left and right central part of the anterior surface of the anterior lower base 3 faces the cervical NC between the first cervical vertebra C1 and the fourth cervical vertebra C4 of the supine person. Moreover, in the lower part of the left and right central part of the anterior surface of the anterior lower base 3, the left and right central parts face the first cervical vertebra C1 to the fourth cervical vertebra C4 of the supine person. In addition, the left and right lateral parts face the posterior belly PDM of the digastric muscle of the supine person. Moreover, the part between the left and right central parts and the left and right lateral parts faces the left and right lateral parts of the first cervical vertebra C1 to the fourth cervical vertebra C4 of the supine person.

[0039] The lower front base 3 has a low-position incision 31 formed by cutting off the lower part of the lower side portion of the front surface of the lower front base 3, which is located at the center of the left and right sides of the portion facing the first cervical vertebrae C1 to the fourth cervical vertebrae C4. This creates a low-position portion 8 facing the neck NC of a supine person. This low-position portion 8 is recessed so that the elastic rebound force of the pillow 1 will not compress the cervical vertebrae C1 to C4 of the supine person. In this low-position portion 8, the front surface of the rear base 2 is exposed.

[0040] A pair of high-positioned bodies 5 cover the lower part of the left and right sides of the lower part of the front surface side of the front base 3, which is the part facing the lower part of the digastric muscle PDM of the supine person. The body is made of elastic polyurethane foam that is thinner (lower) than the front lower base 3.

[0041] The lower front base 3 is fixed by bonding the left and right sides of a pair of high-position parts 5 together with the lower side of the lower part of the front surface side of the lower front base 3, which is located opposite to the posterior abdominal muscles (PDM) of the supine person. This results in a high-position part 9 being provided at the position opposite to the neck (NC) of the supine person. The high-position part 9 is higher than the middle part 10 described later, and the elastic rebound force of the pillow 1 presses on the posterior abdominal muscles (PDM) of the supine person on both sides of the middle part 10.

[0042] Here, the high part 9 is preferably configured such that the angle formed by the step between the high part 9 and the middle part 10 faces the posterior abdominal muscle (PDM) of the supine person. This allows the high part 9 to effectively press the posterior abdominal muscle (PDM) of the supine person directly or indirectly through the angle formed by the step between the high part 9 and the middle part 10.

[0043] The lower front base 3 is provided with a low part forming cut 31 and a pair of high part forming bodies 5 on the left and right sides. The middle part 10 is provided in the part of the lower side of the lower part of the front surface of the lower front base 3, which is located between the left and right central part (low part 8) and the left and right side parts (high part 9) facing the left and right sides of the first cervical vertebra C1 to the fourth cervical vertebra C4 of the supine person. The middle part 10 is higher than the low part 8 and the left and right sides of the low part 8 are supported by the elastic rebound force of the pillow 1 on the left and right sides of the supine person's cervical vertebra C1 to C4.

[0044] The front lower base 3 has a main support portion 11 located on the upper side of the left and right center of the front surface of the front lower base 3, in the region SA2 between the superior nuchal line SA4 and inferior nuchal line SA5 of the occipital bone SA of a supine person. This main support portion 11 is situated above the height-direction of the high position 9 (in the X1 direction of the figure) and is made of elastic polyurethane foam. It applies pressure to at least the left and right designated regions SA7 within the region SA2 between the superior nuchal line SA4 and inferior nuchal line SA5 of the occipital bone SA of the supine person, providing surface support. The middle position 10 is set to the same height as the main support portion 11.

[0045] A pair of left and right side limiting parts 6 are formed to cover the left and right sides of the front surface of the front lower base 3 located on the left and right sides of the main support part 11 and the high part 9. They are made of elastic polyurethane foam that is thicker (higher) than the high part forming body 5.

[0046] The anterior upper base 4 is fixed by bonding the left and right pairs of lateral limiting parts 6 together with the left and right sides of the anterior surface of the anterior lower base 3, which are located on the left and right sides of the main support part 11 and the high part 9. Thus, lateral limiting parts 13 are provided on the left and right sides of the mastoid process SC1 of the temporal bone SC of a supine person. The lateral limiting parts 13 protrude higher than the main support part 11 to restrict the rotation of the head HD of the supine person (only these parts from the neck NC to the head HD of the supine person rotate in the left and right lateral direction).

[0047] The upper front base 4 is a rectangular plate-shaped elastic polyurethane foam of the same thickness (height) as the lower front base 2, covering the upper front surface of the lower rear base 2 which is not covered by the lower front base 3. It is formed by cutting 41 for the secondary support portion, which will be described later. The upper front base 4 is configured to be bonded and fixed in a state of overlapping with the upper front surface of the lower rear base 2 which is not covered by the lower front base 3. The lower side portion of the upper front base 4 at the left and right center is located at the center of the pillow 1, and the lower side portion of the upper front surface at the left and right center is facing the head of the supine person, which is closer to the top of the head than the upper line SA4.

[0048] The front upper base 4 has a secondary support portion 12 by cutting off the portion of the front upper base 4 that faces the head of the supine person on the side closer to the top of the head than the upper neck line SA4, i.e., the lower part of the left and right center portion of the front surface of the front upper base 4. The secondary support portion 12 is located above the main support portion 11 in the height direction X1 and is made of elastic polyurethane foam. The support height is set lower than that of the main support portion 11, so as to apply pressure and support the head of the supine person on the side closer to the top of the head than the upper neck line SA4.

[0049] The main limiting part forming body 7 is formed by providing a main limiting part forming cutout 71 (described later) on a rectangular plate-shaped elastic polyurethane foam with the same thickness (height) as the front upper base 4 covering the upper front surface side. The main limiting part forming body 7 is configured to be bonded and fixed in a state of overlapping with the upper front surface side of the front upper base 4. The lower side portion of the left and right central portions of the main limiting part forming body 7 faces the secondary support part forming cutout 41, i.e., the secondary support part 12.

[0050] The front upper base 4 is bonded and fixed with the main restricting part forming body 7 overlapping with the upper part of the front surface of the front upper base 4. The main restricting part 14 is provided by cutting off the part facing the sub-support part 12 of the main restricting part forming body 7, that is, the lower part of the left and right center of the main restricting part forming body 7. The main restricting part 14 is located on the side opposite to the main support part 11 of the sub-support part 12 and protrudes higher than the sub-support part 12 to restrict the head from shifting upward in the height direction of the supine person.

[0051] Next, the effects of the technical features of pillow 1 will be explained.

[0052] [Regarding technical features (1A) to (1D)]

[0053] The pillow 1, by using its elastic rebound force to press on the high part 9 of the posterior part of the digastric muscle (PDM) of a supine person, can inhibit excessive relaxation of the PDM, thereby preventing jaw depression and hyoid bone hunchback descent, which can narrow the trachea. Therefore, it can maintain an open trachea, thus improving breathing difficulties. Furthermore, it can prevent the mouth from opening, thus also preventing snoring and sleep apnea.

[0054] In addition, by providing a low section 8 that collapses in a way that does not compress the cervical vertebrae of a supine person (the first cervical vertebra C1 to the fourth cervical vertebra C4 in this embodiment), the risk of cervical disc herniation or cervical spondylosis can be reduced.

[0055] Furthermore, by providing a mid-position 10 on both sides of the cervical spine of a supine person using the elastic rebound of the pillow, the risk of cervical stiffness (NC) can be avoided. That is, if there is no support around the cervical spine, NC stiffness will occur. When the cervical spine is stiff, in addition to easily accumulating fatigue, breathing will also become shallow, becoming a cause of breathing difficulties. However, by providing the aforementioned mid-position 10, this situation can be prevented.

[0056] Thus, the pillow 1 of this embodiment can improve breathing difficulties, and the neck will not be stiff, reducing the risk of cervical disc herniation or cervical spondylosis, thereby enabling comfortable sleep.

[0057] [Regarding technical features (2A) to (2B)]

[0058] Because the pillow 1 has a secondary support 12 with a lower support height than the main support 11, and the main support 11 with a higher support height applies pressure to the left and right designated areas SA7 of the occipital bone SA facing downwards and provides surface support, and the left and right designated areas SA7 provided by this surface support are located near the head's center of gravity G, the weight of the head is concentrated in the main support 11. Due to this concentration, it effectively prevents the head HD of a supine person from easily starting to move in the longitudinal direction of the pillow 1, thereby effectively suppressing the development of large-scale deviation movement and more stably maintaining the angle of the supine person's head HD. In other words, it effectively prevents the angle of the supine person's head HD from easily tilting significantly, which is generally considered difficult to control.

[0059] In addition, the area where the main support 11 applies pressure and provides surface support is the left and right designated area SA7 in the occipital bone SA. Therefore, there is no pressure and it will not have an adverse effect on breathing. Furthermore, since the weight of the head HD of a supine person is concentrated on the main support 11, causing the main support 11 to be concave, it is not easy to cause the head HD of a supine person to roll over (only these parts from the neck NC to the head HD of a supine person rotate in the left and right lateral direction), and stiff neck is also less likely to occur.

[0060] Figure 5 This is a perspective view of pillow 1A according to another embodiment of the present invention.

[0061] like Figure 5 The pillow 1A is configured to cut off the portion of the lower front base 3 that faces the posterior belly of the digastric muscle (PDM) of a supine person, specifically the portion between the left and right sides of the lower side portion of the anterior surface of the lower front base 3 (the portion of the lower front surface of the lower front base 3 facing the first cervical vertebra C1 to the fourth cervical vertebra C4, i.e., the left and right central portions of the lower side portion of the anterior surface of the lower front base 3, and the portion of the lower front surface of the lower front base 3 facing the left and right sides of the first cervical vertebra C1 to the fourth cervical vertebra C4 of a supine person, i.e., the left and right central portions of the anterior surface of the lower front base 3). A cut 31A is made in the lower side of the front base 3 between the left and right central portions and the left and right side portions. A pair of left and right mid-position forming bodies 5A are bonded and fixedly provided in the left and right side portions of the cut 32 (the portion of the front lower base 3 facing the left and right side portions of the first cervical vertebra C1 to the fourth cervical vertebra C4 of the supine person, that is, the portion between the left and right central portions and the left and right side portions in the lower side of the left and right central portions of the front surface of the front lower base 3). The pair of left and right mid-position forming bodies 5A are made of rectangular plate-shaped elastic polyurethane foam that is thinner (lower) than the front lower base 3.

[0062] With the above structure, the pillow 1A has a low part 8A in the part between the left and right middle parts forming bodies 5A (the part of the front lower base 3 facing the first cervical vertebra C1 to the fourth cervical vertebra C4, that is, the left and right middle parts of the lower part of the front surface side of the front lower base 3).

[0063] In addition, a high part 9A is provided on the left and right outer sides of the left and right middle part forming body 5A (the left and right sides of the lower side part of the lower part of the front surface side of the front lower base 3, which faces the lower abdomen PDM of the digastric muscle of the supine person).

[0064] Furthermore, a middle part 10A is provided at the location of a pair of middle parts forming bodies 5A between the lower part 8A and the upper part 9A (the location of the front lower base 3 facing the left and right sides of the first cervical vertebra C1 to the fourth cervical vertebra C4 of a supine person, that is, the location between the left and right central parts and the left and right sides of the lower part of the front surface side of the front lower base 3 at the left and right central parts).

[0065] In pillow 1A, the front surface of the rear base 2 is exposed in the lower part 8A, but the upper part 9A is set to the same height as the main support part 11. In addition, the height of the middle part 10A (middle part forming body 5A) gradually decreases from the upper side in the elongation direction to the lower side in the height direction, but it can also be set to the same height.

[0066] The pillows 1 and 1A described above are merely examples of the invention. The invention can be implemented by appropriately modifying the structure without departing from the scope of the claims. For example, the shape, size, and firmness of the low part 8, 8A, middle part 10, 10A, high part 9, 9A, main support part 11, secondary support part 12, lateral restraint part 13, and main restraint part 14 of pillows 1 and 1A can be varied in various ways.

[0067] In addition, pillows 1 and 1A are assembled from multiple parts, but of course these multiple parts can also be molded into one piece as much as possible.

[0068] In addition, the lower part 8, 8A, middle part 10, 10A, and upper part 9, 9A of pillows 1 and 1A are positioned in the direction of the neck NC between the first cervical vertebra C1 and the fourth cervical vertebra C4 of a supine person. Of course, they can also be positioned in the direction of the neck NC up to the cervical vertebrae that are higher or lower than the first cervical vertebra C1 to the fourth cervical vertebra C4 of a supine person.

[0069] Explanation of reference numerals in the attached figures

[0070] 1 pillow

[0071] 8 Low position

[0072] 9 High-level section

[0073] 10 middle part

[0074] 11 Main Support Section

[0075] 12 auxiliary support units

Claims

1. A pillow with elastic resilience, characterized in that, The pillow has the following features positioned opposite the neck of a supine person: The lower part of the pillow is recessed so that it will not compress the cervical spine of the supine person due to the elastic rebound force of the pillow; The middle section, higher than the lower section and on both sides of the lower section, provides elastic support to the left and right sides of the cervical spine of the supine person by the elastic rebound force of the pillow; and The high position, which is higher than the middle position and on both sides of the middle position, is where the elastic rebound force of the pillow presses on the posterior abdomen of the supine person's abdominal muscles.

2. The pillow with elastic resilience according to claim 1, characterized in that, have: The main support portion, located above the height direction of the upper part, is elastic and applies pressure and provides planar support to at least the following areas in the region between the superior and inferior nuchal lines of the occipital bone of the supine person: the area between the left end of the portion of the trapezius muscle attached to the occipital bone and the portion of the sternocleidomastoid muscle attached to the left side of the occipital bone, and the area between the right end of the portion of the trapezius muscle attached to the occipital bone and the portion of the sternocleidomastoid muscle attached to the right side of the occipital bone. as well as The secondary support, located above the main support in the height direction, is elastic and its support height is set lower than that of the main support, applying pressure and providing support to the head of the supine person.

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