Pillow core material

Abstract

The present invention provides a pillow core material that can prevent pressure on the user's ears when the user transitions from sleeping on their back to sleeping on their side. [Solution] A pillow core material 1 according to one embodiment is a pillow core material comprising a cushion body 2 that extends in a first direction D1 and a second direction D2 intersecting the first direction D1, and has thickness in a third direction D3 intersecting both the first direction D1 and the second direction D2. The cushion body 2 comprises a neck support portion 4 located at one end of the second direction D2 in a central region R1 in the first direction D1, a chin support portion 8 located at one end of the second direction D2 in a lateral region R2 located laterally to the first direction D1 in the central region R1, a first recess 9 located in the lateral region R2, and a second recess 10 located inside the first recess 9 when viewed from the third direction D3, and deeper than the first recess 9. The chin support portion 8 is raised relative to the first recess 9. The chin support portion 8 is higher than the neck support portion 4.

Description

Technical Field

[0001] The present disclosure relates to a core material for a pillow.

Background Art

[0002] Patent Document 1 describes a concave pillow. The concave pillow has a low surface located at the center and a pair of high surfaces located on both sides of the low surface. The high surfaces are formed flat. When the user lies on their back, the user places their head on the low surface, and when the user lies on their side, the user places their head on the high surface. The concave pillow has a concave portion for ear insertion provided on the high surface. When the user lies on their side and places their head on the high surface, the user's ears fit into the concave portion for ear insertion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] [[ID=]34] In the concave pillow of Patent Document 1, since the high surface is formed flat, when the user lies on their side and places their head on the high surface, the head may not be positioned with respect to the high surface. In this case, when the user lies on their side, the position of the user's ears may shift with respect to the position of the concave portion for ear insertion. If the position of the ears shifts with respect to the position of the concave portion for ear insertion, the ears may rest on the high surface, and there is a concern that the ears may be pressed by the high surface.

[0005] An object of the present disclosure is to provide a core material for a pillow that can suppress pressing of the user's ears when the user shifts from lying on their back to lying on their side.

Means for Solving the Problems

[0006] (1) The pillow core material according to this disclosure comprises a cushion body that extends in a first direction and in a second direction intersecting the first direction, and has thickness in a third direction intersecting both the first and second directions. The cushion body comprises a neck support portion located at one end in the second direction in the central region in the first direction, a chin support portion located at one end in the second direction in a lateral region located laterally to the first direction in the central region, a first recess located in the lateral region, and a second recess located inside the first recess when viewed from the third direction, and being deeper than the first recess. The chin support portion is raised relative to the first recess. The chin support portion is higher than the neck support portion.

[0007] In this pillow core material, the chin support portion located in the lateral region is higher than the neck support portion located in the central region. This ensures that when the user turns over and transitions from sleeping on their back to sleeping on their side, the chin support portion reliably supports the user's chin. In this pillow core material, the chin support portion is raised relative to the first recess. When the user rests their chin on the chin support portion, the side of the user's head fits into the first recess and is reliably supported by the first recess. When viewed from a third direction, the second recess is located inside the first recess, so when the side of the head fits into the first recess, the user's ear naturally fits into the second recess. Since the second recess is deeper than the first recess, it prevents the cushion from compressing the user's ear. As a result, it is possible to prevent the user's ear from being compressed when they transition from sleeping on their back to sleeping on their side.

[0008] (2) In (1) above, the cushion body may further include a crown support portion located at the end opposite to the end in the second direction in the lateral region, and which is raised relative to the first recess. Generally, the position of the crown of a user sleeping on their side is higher than the position of the temporal region. According to the above configuration, the crown support portion will be located at the position of the crown of a user sleeping on their side with their temporal region in the first recess. Therefore, the crown of a user sleeping on their side can be reliably supported by the crown support portion.

[0009] (3) In (1) or (2) above, the cushion body may further include a occipital support portion located in the center of the second direction in the central region, and a third recess provided on the surface opposite to the surface on which the occipital support portion is located. When viewed from the third direction, the occipital support portion may overlap with the third recess. In this case, since the third recess is located on the back side of the occipital support portion, the length of the cushion body in the third direction at the position of the occipital support portion is shortened. That is, the cushion body is thinner at the occipital support portion. Therefore, when the back of the head is placed on the occipital support portion, the back of the head sinks in appropriately against the cushion body. Consequently, the feeling of pressure on the back of the user's head is reduced, and the user's sleeping comfort is improved.

[0010] (4) In any of (1) to (3) above, the pillow core material may further include a contact cooling material superimposed on the surface of the cushion body that comes into contact with the user's head. In this case, when the user rests their head on the pillow core material, the contact cooling material comes into contact with the user's skin, etc., so the user can feel a moderate coolness. [Effects of the Invention]

[0011] According to this disclosure, it is possible to suppress pressure on the user's ear when the user transitions from sleeping on their back to sleeping on their side. [Brief explanation of the drawing]

[0012] [Figure 1] Figure 1 is a perspective view showing a pillow core material according to the first embodiment. [Figure 2] Figure 2 is a plan view showing the core material for a pillow according to the first embodiment. [Figure 3] Figure 3 is a cross-sectional view along the line III-III in Figure 2. [Figure 4] Figure 4 is a bottom view showing the core material for a pillow according to the first embodiment. [Figure 5] Figure 5 is a front view showing the core material for a pillow according to the first embodiment. [Figure 6] Figure 6 is a plan view showing a modified example of a pillow core material. [Figure 7]FIG. 7 is a perspective view showing a pillow core material according to the second embodiment. [Figure 8] FIG. 8 is a plan view showing a pillow core material according to the second embodiment. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8. [Figure 10] FIG. 10 is a bottom view showing a pillow core material according to the second embodiment. <S [Figure 11] FIG. 11 is a front view showing a pillow core material according to the second embodiment.

MODE FOR CARRYING OUT THE INVENTION

[0013] Hereinafter, embodiments of the pillow core material according to the present disclosure will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant descriptions are omitted as appropriate. The drawings may be drawn with some parts simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those shown in the drawings.

[0014] The pillow core material is, for example, bedding. "Bedding" refers to something that the user's body is placed on when the user takes a rest or sleeps. The pillow core material is placed and used on a placement surface. The "placement surface" is the surface on which the pillow core material is placed, and as an example, it is a laid bedding such as a mattress or a futon. The pillow core material has an upper surface on which the user's head is placed, a lower surface facing the opposite side of the upper surface, and a side surface connecting the upper surface and the lower surface. The "pillow core material" is placed on the placement surface such that the lower surface contacts the placement surface. The user's head is placed on the upper surface of the cushion body.

[0015] The pillow core material is housed in a side fabric and used. The side fabric may be detachable or non-detachable with respect to the pillow core material. The "side fabric" refers to a bag-shaped fabric. The "user" is a person who uses the pillow core material by bringing his or her head into contact with the pillow core material. The user is, for example, a person who places his or her head on the purchased pillow core material, or a person who places his or her head on the pillow core material for the purpose of purchase.

[0016] (First Embodiment) FIG. 1 is a perspective view showing a pillow core material 1 according to the first embodiment. FIG. 2 is a plan view showing the pillow core material 1. As shown in FIGS. 1 and 2, the pillow core material 1 has a rounded rectangular shape in plan view. The pillow core material 1 extends in a first direction D1 and a second direction D2 that intersects (e.g., is orthogonal to) the first direction D1. The first direction D1 is, for example, the longitudinal direction of the pillow core material 1. The second direction D2 is, for example, the lateral direction of the pillow core material 1. The pillow core material 1 has a thickness in a third direction D3 that intersects (e.g., is orthogonal to) both the first direction D1 and the second direction D2.

[0017] The length of the pillow core material 1 in the first direction D1 is, for example, 400 mm or more and 600 mm or less (as an example, 501 mm). The length of the pillow core material 1 in the second direction D2 is, for example, 300 mm or more and 400 mm or less (as an example, 348 mm). The length of the pillow core material 1 in the third direction D3 is, for example, 100 mm or more and 150 mm or less (as an example, 124 mm).

[0018] The pillow core material 1 includes a cushion body 2 and a contact cool feeling member 3. The pillow core material 1 is made of a flexible material. The "flexible material" refers to a cushioning material that deforms when the user's head is placed thereon and receives a load. The flexible material is, for example, foamed urethane.

[0019] The cushion body 2 extends in the first direction D1 and the second direction D2. The cushion body 2 has a thickness in the third direction D3. The cushion body 2 has an upper surface 2a on which the user's head is placed and a lower surface 2b (see FIG. 3) facing the opposite side of the upper surface 2a. In this specification, the direction in which the upper surface 2a is located with respect to the lower surface 2b may be described as "up", "upper side" or "above", and the opposite direction may be described as "down", "lower side" or "below".

[0020] The cushion body 2 has a pair of short sides 2c extending in a second direction D2 when viewed from above, a first long side 2d extending in a first direction D1 when viewed from above, and a second long side 2e extending in the first direction D1 when viewed from above. The short sides 2c are, for example, curved. The short sides 2c are curved so as to project outward in the first direction D1. In this specification, the center of the first direction D1 relative to the ends of the first direction D1 may be described as "inside the first direction D1", and the ends of the first direction D1 relative to the center of the first direction D1 may be described as "outside the first direction D1" or "lateral".

[0021] The first long side 2d and the second long side 2e are aligned along the second direction D2. For example, the pillow core material 1 is used in an orientation such that the distance from the user's feet to the first long side 2d is longer than the distance from the user's feet to the second long side 2e. The first long side 2d and the second long side 2e are, for example, curved. The first long side 2d is curved so as to protrude outward in the second direction D2. The second long side 2e is curved so as to recess inward in the second direction D2. In this specification, the center of the second direction D2 relative to its ends may be described as "inside the second direction D2," and the ends of the second direction D2 relative to its center may be described as "outside the second direction D2."

[0022] The cushion body 2 has a central region R1 located in the center of the first direction D1 of the cushion body 2, and a pair of lateral regions R2 located at each end of the first direction D1 of the cushion body 2. The lateral regions R2 are located to the sides of the central region R1 in the first direction D1. The lateral regions R2 are adjacent to the central region R1. The central region R1 has a constricted shape when viewed from above.

[0023] The cushion body 2 comprises a neck support portion 4 that supports the neck of a user lying on their back, a occipital support portion 5 that supports the back of the user's head when they are lying on their back, a first occipital support portion 6 that supports the top of the user's head when they are lying on their back, and a third recess 7 (see Figure 3). The neck support portion 4, the occipital support portion 5, and the first occipital support portion 6 are located in the central region R1. The neck support portion 4, the occipital support portion 5, and the first occipital support portion 6 are aligned along the second direction D2. The occipital support portion 5 is located in the center of the second direction D2 in the central region R1.

[0024] The neck support portion 4 is located at one end of the second direction D2 of the central region R1. The distance from the neck support portion 4 to the first long side 2d is longer than the distance from the neck support portion 4 to the second long side 2e. The first crown support portion 6 is located at the other end of the second direction D2 of the central region R1. The distance from the first crown support portion 6 to the first long side 2d is shorter than the distance from the first crown support portion 6 to the second long side 2e. The length of the neck support portion 4 in the first direction D1 is longer than the length of the occipital support portion 5 in the first direction D1. The length of the first crown support portion 6 in the first direction D1 is longer than the length of the occipital support portion 5 in the first direction D1.

[0025] Figure 3 is a cross-sectional view along the line III-III in Figure 2. As shown in Figure 3, the neck support portion 4 has a shape that conforms to the neck of a user lying on their back. The neck support portion 4 has a first upper surface 4a that forms part of the upper surface 2a and a first side surface 4b that faces outward in the second direction D2. When viewed from the first direction D1, the first upper surface 4a is curved upward. The first side surface 4b is smoothly connected to the first upper surface 4a. When viewed from the first direction D1, the first side surface 4b is curved to protrude outward in the second direction D2.

[0026] The first crown support portion 6 has a second upper surface 6a that forms part of the upper surface 2a, and a second side surface 6b that faces outward in the second direction D2. When viewed from the first direction D1, the second upper surface 6a is curved upward. The second side surface 6b is smoothly connected to the second upper surface 6a. When viewed from the first direction D1, the second side surface 6b is curved so as to protrude outward in the second direction D2. The second side surface 6b and the first side surface 4b are curved so as to move away from each other. For example, the height of the first crown support portion 6 is approximately the same as the height of the neck support portion 4.

[0027] The occipital support section 5 is recessed relative to the neck support section 4 and the first crown support section 6. The height of the occipital support section 5 is lower than the height of the neck support section 4 and the height of the first crown support section 6. The height of the occipital support section 5 is the distance from the bottom of the occipital support section 5 to the lower surface 2b. The occipital support section 5 is smoothly connected to the neck support section 4 and the first crown support section 6.

[0028] Figure 4 is a bottom view showing the pillow core material 1. As shown in Figures 3 and 4, the third recess 7 is located on the surface opposite to the surface where the occipital support portion 5 is located (e.g., the upper surface 2a) (e.g., the lower surface 2b). The third recess 7 is recessed upward from the lower surface 2b. The third recess 7 is located in the center of the central region R1 in the second direction D2. Viewed from the third direction D3, the occipital support portion 5 overlaps with the third recess 7. For example, the length of the third recess 7 in the second direction D2 is approximately the same as the length of the occipital support portion 5 in the second direction D2.

[0029] The third recess 7 is elliptical when viewed from the third direction D3. More specifically, the length of the third recess 7 in the second direction D2 increases as it approaches the center of the first direction D1. The length (depth) of the third recess 7 in the third direction D3 also increases as it approaches the center of the first direction D1. The length of the third recess 7 in the first direction D1 is longer than the length of the occipital support portion 5 in the first direction D1. For example, the portion of the lower surface 2b other than the third recess 7 is flat.

[0030] As shown in Figures 1 and 2, the cushion body 2 comprises a chin support portion 8 that supports the chin of a user sleeping on their side, a first recess 9 that supports the temporal region of a user sleeping on their side, a second recess 10 that accommodates the ear of a user sleeping on their side, and a second crown support portion 11 (crown support portion) that supports the crown of a user sleeping on their side. The chin support portion 8, the first recess 9, and the second crown support portion 11 are aligned along the second direction D2. The first recess 9 is located between the chin support portion 8 and the second crown support portion 11.

[0031] The jaw support portion 8 is located at one end of the second direction D2 in the lateral region R2. For example, the jaw support portion 8 is located on the same side as the neck support portion 4 in the second direction D2. That is, the jaw support portion 8 is aligned with the neck support portion 4 along the first direction D1. As shown in Figure 3, the jaw support portion 8 has a third upper surface 8a that forms part of the upper surface 2a and a third side surface 8b that faces outward in the second direction D2.

[0032] Figure 5 is a front view showing the pillow core material 1 as seen along the second direction D2. As shown in Figures 3 and 5, the height of the chin support portion 8 is higher than the height of the neck support portion 4. The third upper surface 8a is smoothly connected to the first upper surface 4a. As viewed from the first direction D1, the third side surface 8b is inclined so as it approaches the bottom surface 2b, it approaches the center of the second direction D2. The third side surface 8b is smoothly connected to the first side surface 4b. The third side surface 8b is located further out in the second direction D2 than the first side surface 4b. As shown in Figure 2, as viewed from the third direction D3, the outer edge of the cushion body 2 from the first side surface 4b to the third side surface 8b follows the outer edge of the user's body extending from the neck to the shoulders.

[0033] The first recess 9 is located in the center of the second direction D2 in the lateral region R2. The first recess 9 is recessed relative to the chin support 8. In other words, the chin support 8 is raised relative to the first recess 9. The first recess 9 accommodates the temporal region of a user sleeping on their side. As shown in Figures 2 and 3, when viewed from the first direction D1, the outer edge of the cushion body 2 from the first recess 9 to the chin support 8 follows the contour of the face extending to the temporal region and chin of a user sleeping on their side. The outer end of the first recess 9 in the first direction D1 is located inside the short side 2c. The position of the first recess 9 in the second direction D2 is the same as the position of the occipital support 5 in the second direction D2. That is, the first recess 9 and the occipital support 5 are aligned along the first direction D1.

[0034] As shown in Figures 1 and 2, the cushion body 2 has a cheek support portion 12 located outward in the first direction D1 from the second recess 10, which will be described in detail later. The cheek support portion 12 protrudes upward from the second recess 10. The cheek support portion 12 supports the cheek of a user who is sleeping on their side. The cheek support portion 12 is smoothly connected to the chin support portion 8 and the second crown support portion 11.

[0035] The cushion body 2 has a temporal bone support portion 13 located medial to the second recess 10 in the first direction D1. The temporal bone support portion 13 supports the temporal bone of a user sleeping on their side. More specifically, the temporal bone support portion 13 supports the portion of the user's temporal bone located between the ear and the back of the head. The temporal bone support portion 13 is smoothly connected to the jaw support portion 8 and the second parietal support portion 11. The length (width) of the temporal bone support portion 13 in the first direction D1 is shorter than the length (width) of the cheek support portion 12 in the first direction D1. The second recess 10 is located within the lateral region R2, near the center of the pillow core material 1 in the first direction D1.

[0036] The second recess 10 is located inside the first recess 9 when viewed from the third direction D3. When viewed from the third direction D3, the first recess 9 and the second recess 10 form an annular shape. When viewed from the third direction D3, the area of ​​the second recess 10 is smaller than the area of ​​the portion enclosed by the first recess 9. When viewed from the third direction D3, the outer edge of the second recess 10 is elliptical with a major axis extending along the second direction D2. As shown in Figure 3, the depth of the second recess 10 is greater than the depth of the first recess 9. More specifically, the bottom of the first recess 9 (the boundary between the first recess 9 and the second recess 10) is higher than the bottom of the second recess 10. The depth of the second recess 10 is, for example, shallower than the depth of the occipital support portion 5. When viewed from the first direction D1, the curvature of the second recess 10 is, for example, greater than the curvature of the first recess 9. Viewed from the first direction D1, the curvature of the second recess 10 is greater than, for example, the curvature of the occipital support portion 5. The length of the second recess 10 in the first direction D1 is shorter than, for example, the length of the occipital support portion 5 in the first direction D1.

[0037] The second vertex support portion 11 is raised relative to the first recess 9. The second vertex support portion 11 is located at the end opposite to the jaw support portion 8 in the lateral region R2. The second vertex support portion 11 is located on the same side as the first vertex support portion 6 in the second direction D2. That is, the second vertex support portion 11 is aligned with the first vertex support portion 6 along the first direction D1. The height of the second vertex support portion 11 is higher than the height of the neck support portion 4. The height of the second vertex support portion 11 is lower than the height of the jaw support portion 8.

[0038] The parts that make up the cushion body 2 are, in order of height: the chin support part 8, the second crown support part 11, the neck support part 4, the first recess 9, the second recess 10, and the occipital support part 5.

[0039] As shown in Figures 1 and 2, the cooling contact member 3 is superimposed on the upper surface 2a of the cushion body 2, which is the surface in contact with the user's head. The cooling contact member 3 extends along a first direction D1, spanning one lateral region R2, a central region R1, and the other lateral region R2. The cooling contact member 3 is made of, for example, urethane resin. The cooling contact member 3 has a central portion 31 and a pair of lateral portions 32. The central portion 31 covers at least a part of the central region R1. Specifically, the central portion 31 covers the neck support portion 4, the occipital support portion 5, and the first crown support portion 6. A part of the first crown support portion 6 is not covered by the cooling contact member 3. The cooling contact member 3 may cover the entire first crown support portion 6. A part of the neck support portion 4 is not covered by the cooling contact member 3. The cooling contact member 3 may cover the entire neck support portion 4.

[0040] The lateral portion 32 covers at least a part of the lateral region R2. For example, the lateral portion 32 covers at least a part of the jaw support portion 8, the first recess 9, the second recess 10, and the second crown support portion 11. A part of the jaw support portion 8 is not covered by the contact cooling member 3. The contact cooling member 3 may cover the entire jaw support portion 8. The contact cooling member 3 extends continuously from the central portion 31. However, the lateral portion 32 may be a portion separate from the central portion 31.

[0041] Next, the effects and benefits obtained from the pillow core material 1 according to this embodiment will be described. In the pillow core material 1, the chin support portion 8 located in the lateral region R2 is higher than the neck support portion 4 located in the central region R1. As a result, when the user turns over and transitions from sleeping on their back to sleeping on their side, the chin support portion 8 can reliably support the user's chin. In the pillow core material 1, as the chin support portion 8 is raised relative to the first recess 9, the temporal region of the user who rests their chin on the chin support portion 8 fits into the first recess 9 and is reliably supported by the first recess 9. When viewed from the third direction D3, the second recess 10 is located inside the first recess 9, so when the temporal region fits into the first recess 9, the user's ear naturally fits into the second recess 10. Since the second recess 10 is deeper than the first recess 9, it is possible to suppress the cushion body 2 from compressing the user's ear. As a result, it is possible to suppress the compression of the user's ear when the user transitions from sleeping on their back to sleeping on their side.

[0042] As described above, the cushion body 2 is located at the end opposite to one end of the second direction D2 in the lateral region R2 and includes a second head support portion 11 that is raised relative to the first recess 9. Generally, the position of the top of the head of a user sleeping on their side is higher than the position of the temporal region. With the above configuration, the second head support portion 11 is positioned at the position of the top of the head of a user sleeping on their side with their temporal region resting in the first recess 9. Therefore, the top of the head of a user sleeping on their side can be reliably supported by the second head support portion 11.

[0043] As shown in Figure 3, the cushion body 2 comprises a occipital support portion 5 located in the center of the second direction D2 in the central region R1, and a third recess 7 provided on the surface opposite to the surface where the occipital support portion 5 is located. Viewed from the third direction, the occipital support portion 5 overlaps with the third recess 7. With this configuration, since the third recess 7 is located on the back side of the occipital support portion 5, the length of the cushion body 2 in the third direction D3 at the position of the occipital support portion 5 is shortened. In other words, the cushion body 2 is thinner at the occipital support portion 5. Therefore, when the back of the head is placed on the occipital support portion 5, the back of the head sinks appropriately into the cushion body 2. Consequently, the feeling of pressure on the back of the user's head is reduced, improving the user's sleeping comfort.

[0044] As mentioned above, the pillow core material 1 includes a contact-cooling material 3 superimposed on the surface of the cushion body 2 that comes into contact with the user's head. In this case, when the user rests their head on the pillow core material 1, the contact-cooling material 3 comes into contact with the user's skin, allowing the user to feel a moderate coolness.

[0045] The pillow core material 1 has been described above. However, the configuration of the pillow core material is not limited to the pillow core material 1 described above. Figure 6 is a plan view showing a modified pillow core material 1A. Modified pillow core materials will be described below. Some of the configurations of the modified pillow core material are the same as some of the configurations of the pillow core material 1 described above. Therefore, in the following, explanations that overlap with the description of pillow core material 1 described above will be omitted as appropriate, using the same reference numerals.

[0046] The pillow core material 1A has a contact cooling member 3A that is different from the contact cooling member 3 described above. The contact cooling member 3A has a central portion 33 and a pair of lateral portions 34. The central portion 33 has a first portion 33a that covers the neck support portion 4, a second portion 33b that covers the occipital support portion 5, and a third portion 33c that covers the first crown support portion 6. The first portion 33a and the third portion 33c are continuous with the second portion 33b. The third portion 33c is located on the opposite side from the first portion 33a when viewed from the second portion 33b.

[0047] The second portion 33b is connected to the lateral portion 34. The first portion 33a and the third portion 33c are separated from the lateral portion 34. Multiple gaps C are provided between the central portion 33 and the lateral portion 34. The gaps C extend in a slit-like manner along the boundary between the central region R1 and the lateral region R2.

[0048] The contact-cooling member 3A has a through-hole 3a that penetrates the lateral portion 34. The through-hole 3a overlaps with the second recess 10 when viewed from the third direction D3. When viewed from the third direction D3, the outer edge of the through-hole 3a extends, for example, along the outer edge of the second recess 10. The second recess 10 is exposed due to the provision of the through-hole 3a. When viewed from the third direction D3, the through-hole 3a has a rounded rectangular shape. However, the through-hole 3a may have a circular shape when viewed from the third direction D3.

[0049] The contact-cooling member 3A has a plurality of protrusions 35 that project from the upper surface 3b of the contact-cooling member 3A. The upper surface 3b is the surface opposite to the surface of the contact-cooling member 3A that faces the upper surface 2a of the cushion body 2. The protrusions 35 are, for example, spherical in shape. The plurality of protrusions 35 are arranged on the upper surface 3b with spacing, for example, about half the diameter of the protrusions 35. The plurality of protrusions 35 are arranged, for example, across the entire upper surface 3b.

[0050] (Second Embodiment) Next, the pillow core material 1B according to the second embodiment will be described with reference to Figures 7 and 8. Figure 7 is a perspective view showing the pillow core material 1B according to the second embodiment. Figure 8 is a plan view showing the pillow core material 1B. The pillow core material 1B has a rounded rectangular shape in plan view. The pillow core material 1B has, for example, a rounded trapezoidal shape in plan view. The pillow core material 1B extends in a first direction D1 and a second direction D2. The first direction D1 is, for example, the longitudinal direction of the pillow core material 1B. The second direction D2 is, for example, the short direction of the pillow core material 1B. The pillow core material 1B has thickness in a third direction D3.

[0051] The length of the pillow core material 1B in the first direction D1 is, for example, 400 mm or more and 600 mm or less (516 mm as an example). The length of the pillow core material 1B in the second direction D2 is, for example, 300 mm or more and 400 mm or less (321 mm as an example). The length of the pillow core material 1B in the third direction D3 is, for example, 80 mm or more and 150 mm or less (101 mm as an example).

[0052] The pillow core material 1B comprises a cushion body 41 and a contact-cooling member 42. The pillow core material 1B is made of a flexible material. The cushion body 41 has an upper surface 41a on which the user's head rests and a lower surface 41b (see Figure 9) facing the opposite side of the upper surface 41a.

[0053] The cushion body 41 has a pair of short sides 41c extending in a second direction D2 when viewed from above, a first long side 41d extending in a first direction D1 when viewed from above, and a second long side 41e extending in the first direction D1 when viewed from above. The first long side 41d and the second long side 41e are aligned along the second direction D2. The length of the first long side 41d in the first direction D1 is shorter than the length of the second long side 41e in the first direction D1. The central part of the second long side 41e in the first direction D1 protrudes outward in the second direction D2. Each of the pair of short sides 41c is inclined to move away from each other as it approaches the second long side 41e. The pillow core material 1B is used in an orientation in which the distance from the user's feet to the first long side 41d is longer than the distance from the user's feet to the second long side 41e.

[0054] The cushion body 41 has a central region R3 located in the center of the cushion body 41 in a first direction D1, and a pair of lateral regions R4 located at each end of the cushion body 41 in the first direction D1. The lateral regions R4 are located to the sides of the central region R3 in the first direction D1. The lateral regions R4 are adjacent to the central region R3.

[0055] The cushion body 41 includes a neck support portion 43 that supports the neck of a user lying on their back, a occipital support portion 44 that supports the back of the user's head when they are lying on their back, a first occipital support portion 45 that supports the top of the user's head when they are lying on their back, and a third recess 46 (see Figure 9). The neck support portion 43, the occipital support portion 44, and the first occipital support portion 45 are located in the central region R3. The neck support portion 43, the occipital support portion 44, and the first occipital support portion 45 are aligned along the second direction D2. The occipital support portion 44 is located in the center of the second direction D2 in the central region R3. The neck support portion 43 is located at one end of the second direction D2 in the central region R3.

[0056] The length of the first direction D1 in the central region R3 becomes shorter as it approaches the first long side 41d. The length of the first direction D1 of the neck support portion 43 is longer than the length of the first direction D1 of the occipital support portion 44. The length of the first direction D1 of the occipital support portion 44 is longer than the length of the first direction D1 of the first crown support portion 45.

[0057] Figure 9 is a cross-sectional view along the line IX-IX in Figure 8. As shown in Figure 9, the neck support portion 43 has a shape that conforms to the neck of a user lying on their back. The neck support portion 43 has a first upper surface 43a that forms part of the upper surface 41a and a first side surface 43b that faces outward in the second direction D2. When viewed from the first direction D1, the first upper surface 43a is curved upward. The first side surface 43b is smoothly connected to the first upper surface 43a. The first side surface 43b is inclined so as it approaches the lower surface 41b, it moves away from the occipital support portion 44. When viewed from the first direction D1, the first side surface 43b has a curved shape.

[0058] The first crown support portion 45 has a second upper surface 45a that forms part of the upper surface 41a, and a second side surface 45b that faces outward in the second direction D2. The second upper surface 45a is inclined so that it moves away from the lower surface 41b as it moves away from the occipital support portion 44. The second side surface 45b is smoothly connected to the second upper surface 45a. The second side surface 45b is inclined so that it moves closer to the occipital support portion 44 as it approaches the lower surface 41b. The second side surface 45b appears straight when viewed from the first direction D1. The height of the first crown support portion 45 is higher than the height of the neck support portion 43.

[0059] The occipital support portion 44 is recessed relative to the neck support portion 43 and the first crown support portion 45. The height of the occipital support portion 44 is lower than the height of the neck support portion 43 and the first crown support portion 45. The occipital support portion 44 is smoothly connected to the neck support portion 43 and the first crown support portion 45.

[0060] Figure 10 is a bottom view showing the pillow core material 1B. As shown in Figures 9 and 10, the third recess 46 is provided on the surface (bottom surface 41b) opposite to the surface (top surface 41a) where the occipital support portion 44 is located. The third recess 46 is recessed upward from the bottom surface 41b. The third recess 46 is located in the center of the central region R3 in the second direction D2. Viewed from the third direction D3, the occipital support portion 44 overlaps with the third recess 46. The length of the third recess 46 in the second direction D2 is approximately the same as, for example, the length of the occipital support portion 44 in the second direction D2.

[0061] As shown in Figures 7 and 8, the cushion body 41 includes a chin support portion 47 that supports the chin of a user sleeping on their side, a first recess 48 that supports the temporal region of a user sleeping on their side, a second recess 49 that accommodates the ear of a user sleeping on their side, and a second crown support portion 50 (crown support portion) that supports the crown of a user sleeping on their side. The chin support portion 47, the first recess 48, and the second crown support portion 50 are aligned along the second direction D2. The first recess 48 is located between the chin support portion 47 and the second crown support portion 50.

[0062] The jaw support portion 47 is located at one end in the second direction D2 in the lateral region R4. The jaw support portion 47 is located on the same side as the neck support portion 43 in the second direction D2. That is, the jaw support portion 47 is aligned with the neck support portion 43 along the first direction D1. As shown in Figure 9, the jaw support portion 47 has a third upper surface 47a that forms part of the upper surface 41a and a third side surface 47b that faces outward in the second direction D2.

[0063] Figure 11 is a front view showing the pillow core material 1B as seen from the second direction D2. As shown in Figures 9 and 11, the height of the chin support portion 47 is higher than the height of the neck support portion 43. The third upper surface 47a is smoothly connected to the first upper surface 43a. When viewed from the first direction D1, the third side surface 47b is inclined so as it approaches the bottom surface 41b, it approaches the center of the second direction D2. The third side surface 47b is smoothly connected to the first side surface 43b. The lower end of the third side surface 47b is located inside the second direction D2 compared to the lower end of the first side surface 43b. When viewed from the first direction D1, the first side surface 43b intersects with the third side surface 47b.

[0064] As shown in Figures 7, 8, and 9, the first recess 48 is located in the center of the second direction D2 in the lateral region R4. The first recess 48 is recessed relative to the chin support 47. In other words, the chin support 47 is raised relative to the first recess 48. The first recess 48 accommodates the temporal region of a user sleeping on their side. Viewed from the first direction D1, the outer edge of the cushion body 41 from the first recess 48 to the chin support 47 follows the contour of the face extending to the temporal region and chin of a user sleeping on their side. The outer end of the first recess 48 in the first direction D1 is located inside the short side 41c. The position of the first recess 48 in the second direction D2 is the same as the position of the occipital support 44 in the second direction D2. The first recess 48 is aligned with the occipital support 44 along the first direction D1.

[0065] The cushion body 41 has a cheek support portion 51 located outward in the first direction D1 from the second recess 49, which will be described in detail later. The cheek support portion 51 supports the cheek of a user who is sleeping on their side. The cheek support portion 51 is smoothly connected to the chin support portion 47 and the second crown support portion 50.

[0066] The cushion body 41 has a temporal bone support portion 52 located medial to the second recess 49 in the first direction D1. The temporal bone support portion 52 supports the temporal bone of a user sleeping on their side. The temporal bone support portion 52 is smoothly connected to the chin support portion 47 and the second parietal support portion 50. The length (width) of the temporal bone support portion 52 in the first direction D1 is shorter than the length (width) of the cheek support portion 51 in the first direction D1. The second recess 49 is located near the center of the pillow core material 1B in the first direction D1 within the lateral region R4.

[0067] The second recess 49 is located inside the first recess 48 when viewed from the third direction D3. When viewed from the third direction D3, the first recess 48 and the second recess 49 are annular. When viewed from the third direction D3, the area of ​​the second recess 49 is smaller than the area enclosed by the first recess 48. When viewed from the third direction D3, the outer edge of the second recess 49 is circular. The depth of the second recess 49 is greater than the depth of the first recess 48. The bottom of the first recess 48 (the boundary between the first recess 48 and the second recess 49) is higher than the bottom of the second recess 49. The depth of the second recess 49 is shallower than, for example, the depth of the occipital support portion 44. When viewed from the first direction D1, the curvature of the second recess 49 is greater than the curvature of the first recess 48. When viewed from the first direction D1, the curvature of the second recess 49 is greater than the curvature of the occipital support portion 44. The length of the second recess 49 in the first direction D1 is longer than the length of the occipital support portion 44 in the first direction D1.

[0068] The second vertex support portion 50 is raised relative to the first recess 48. The second vertex support portion 50 is located at the end opposite to the jaw support portion 47 in the lateral region R4. The second vertex support portion 50 is located on the same side as the first vertex support portion 45 in the second direction D2. That is, the second vertex support portion 50 is aligned with the first vertex support portion 45 along the first direction D1. The height of the second vertex support portion 50 is higher than the height of the neck support portion 43. The height of the second vertex support portion 50 is lower than the height of the jaw support portion 47.

[0069] The parts that make up the cushion body 41 are, in order of height: the chin support part 47, the second crown support part 50, the neck support part 43, the first recess 48, the second recess 49, and the occipital support part 44.

[0070] The cooling contact member 42 is placed on top of the upper surface 41a of the cushion body 41, which is the surface that comes into contact with the user's head. The cooling contact member 42 has a central portion 61 and a pair of lateral portions 62. The central portion 61 covers at least a part of the neck support portion 43, the occipital support portion 44, and the first crown support portion 45. The lateral portions 62 cover at least a part of the chin support portion 47, the first recess 48, the second recess 49, and the second crown support portion 50. The same effects as the first embodiment can be obtained from the second embodiment.

[0071] The embodiments of the pillow core material relating to this disclosure have been described above. However, the pillow core material relating to this disclosure is not limited to the embodiments described above, and may be modified within the scope of the gist described in the claims. That is, the shape, size, material, number, and arrangement of each part of the pillow core material can be appropriately changed within the scope of the gist described above.

[0072] In the embodiments described above, an example was given in which the cushion body 2 has a second crown support portion 11. However, the cushion body 2 does not have to have a second crown support portion 11. Specifically, the portion opposite to the jaw support portion 8 in the second direction D2 does not have to be raised relative to the first recess 9. Similarly, the portion opposite to the jaw support portion 47 in the second direction D2 does not have to be raised relative to the first recess 48.

[0073] In the embodiments described above, an example was described in which the cushion body 2 comprises a occipital support portion 5 and a third recess 7. However, the cushion body 2 does not have to have at least one of the occipital support portion 5 and the third recess 7. Specifically, the portion of the upper surface 2a located in the center of the central region R1 in the second direction D2 does not have to be recessed relative to the neck support portion 4 and the first crown support portion 6. The lower surface 2b does not have a third recess 7, and the entire lower surface 2b may be flat. Similarly, the cushion body 41 does not have to have at least one of the occipital support portion 44 and the third recess 46.

[0074] In the embodiments described above, an example was described in which the pillow core material 1 is equipped with a contact cooling member 3. However, the pillow core material 1 does not have to be equipped with a contact cooling member 3. Similarly, the pillow core material 1B does not have to be equipped with a contact cooling member 42.

[0075] In the embodiments described above, an example was described in which the second recess 10 is higher than the occipital support portion 5. However, the second recess 10 may be lower than the occipital support portion 5. [Explanation of Symbols]

[0076] 1,1A,1B...Pillow core material, 2,41...Cushion body, 2a,41a...Top surface, 2b,41b...Bottom surface, 3,3A,42...Cool contact member, 3a...Through hole, 3b...Top surface, 4,43...Neck support part, 4a,43a...First top Surface, 4b, 43b...first side surface, 5,44...occiput support part, 6,45...first parietal support part, 6a,45a...second upper surface, 6b,45b...second side surface, 7,46...third recessed part, 8,47...chin support part, 8a,47a...third part Upper surface, 8b, 47b...Third side, 9,48...First recess, 10,49...Second recess, 11,50...Second parietal support part, 12,51...Cheek support part, 13,52...Temporal bone support part, 31,33,61...Central part, 32,3 4,62...Side part, 33a...First part, 33b...Second part, 33c...Third part, 35...Convex part, C...Gap, D1...First direction, D2...Second direction, D3...Third direction, R1, R3...Central region, R2, R4...Side region.

Claims

1. A pillow core material comprising a cushion body extending in a first direction and a second direction intersecting the first direction, and having thickness in a third direction intersecting both the first and second directions, The cushion body is A neck support portion located at one end in the second direction within the central region in the first direction, A jaw support portion located at one end in the second direction in the lateral region located laterally to the first direction of the central region, The first recess located in the lateral region, A second recess is located inside the first recess when viewed from the third direction and is deeper than the first recess, Equipped with, The jaw support portion is raised relative to the first recess, The chin support portion is a pillow core material that is higher than the neck support portion.

2. The pillow core material according to claim 1, wherein the cushion body is located at the other end in the lateral region opposite to the one end in the second direction and further comprises a head support portion that is raised relative to the first recess.

3. The cushion body is A occipital support portion located in the center of the second direction in the central region, The device further comprises a third recess provided on the surface opposite to the surface on which the aforementioned occipital support portion is located, The pillow core material according to claim 1 or claim 2, wherein, when viewed from the third direction, the occipital support portion overlaps with the third recess.

4. The pillow core material according to claim 1 or claim 2, further comprising a contact-cooling member superimposed on the surface of the cushion body that comes into contact with the user's head.

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