Nap device

Abstract

To provide a nap device capable of measuring brain waves in nap without disturbing user's sleep.SOLUTION: A nap device 10 comprises: a bed main body 12 capable of supporting the body of a user P; a constraining part 52 which is provided on the bed main body 12 for constraining the head H or the neck N of the user P; and a brain wave acquiring part 54 which is provided on a position corresponding to the head H of the user P in a state of constraining the head H or the neck N of the user P by the constraining part 52, for acquiring brain waves of the user.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a nap device.

Background Art

[0002] Patent Document 1 discloses a structure in which a biological information sensor capable of detecting biological information is provided on a seat back of a vehicle seat.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, it is useful to acquire electroencephalogram data during sleep because the sleep state of the user can be grasped. In particular, if electroencephalogram data during a nap can be acquired, a high-quality nap can be realized in a short time. However, when applying the technique described in Patent Document 1, the position of the user's head and the position of the sensor cannot be aligned. In addition, a device that acquires electroencephalograms by being worn by the user may interfere with sleep.

[0005] In consideration of the above facts, an object of the present invention is to obtain a nap device that can measure electroencephalograms during a nap without disturbing sleep.

Means for Solving the Problems

[0006] The nap device according to claim 1 includes a bed body capable of supporting a user's body, a restraint portion provided on the bed body for restraining the user's head or neck, and an electroencephalogram acquisition portion provided at a position corresponding to the user's head in a state where the user's head or neck is restrained by the restraint portion, for acquiring electroencephalograms. The restraining portions are provided in a pair on the left and right as separate bodies from the bed main body, project from the bed main body respectively, and are configured to be movable. The electroencephalogram acquisition unit is provided between the pair of left and right restraining portions and is attached to a connecting portion that connects the pair of left and right restraining portions. .

[0007] In the dozing device according to claim 1, an electroencephalogram acquisition unit is provided at a position corresponding to the head of the user on the bed body capable of supporting the user's body. Thereby, the electroencephalogram of the user can be acquired during dozing.

[0008] Further, the bed body is provided with a restraint unit for restraining the head or neck of the user. Thereby, it is possible to suppress the large movement of the position of the user's head during dozing. Here, the "restraint" is not limited to fixing the head or neck of the user so that it does not move. For example, it is a concept widely including a structure for guiding the head or neck, such as a concave portion having a shape corresponding to the head or neck.

[0010] Furthermore Since the restraint unit is configured to be movable, the head or neck of the user can be restrained regardless of the height and physique of the user. Further, since the electroencephalogram acquisition unit moves in conjunction with the restraint unit, even when the user moves the restraint unit, the electroencephalogram acquisition unit can be aligned with the position of the user's head, and the electroencephalogram of the user can be acquired.

[0011] Claim 2 The dozing device according to claim 1, wherein, in claim 1, the electroencephalogram acquisition unit includes a first sensor provided at a position corresponding to the occipital region of the user and a second sensor provided at a position corresponding to the frontal lobe of the user in a state where the head or neck of the user is restrained by the restraint unit.

[0012] Claim 2 In the dozing device according to claim 1, since the electroencephalogram is acquired by two sensors, namely, the first sensor and the second sensor, the accuracy of the acquired electroencephalogram data is improved.

[0013] Claim 3 The dozing device according to claim 1 or 2In this case, a head-side frame that covers the side and upper portions of the part of the bed body that supports the user's head, a sound collection unit that is provided on the outer surface of the head-side frame and collects sounds around the bed body, and a sound output unit that is provided on the inner surface of the head-side frame and can output sound toward the user are further provided. The inverse-phase sound of the sound collected by the sound collection unit is generated, and the inverse-phase sound is output from the sound output unit.

[0014] Claim 3 In the dozing device according to this claim, the sounds around the bed body are collected by the sound collection unit provided on the outer surface of the head-side frame. Further, the inverse-phase sound of the sound collected by the sound collection unit is output from the sound output unit provided on the inner surface of the head-side frame toward the user. Thereby, the sounds around the user can be canceled, and the user can doze without being concerned about the surrounding sounds.

[0015] Claim 4 The dozing device according to this claim is 3 In this case, a plurality of the sound collection units are provided on the outer surface of the head-side frame, and the sound output unit is provided on the inner surface at the upper end of the head-side frame.

[0016] Claim 4 In the dozing device according to this claim, sounds in a plurality of directions with respect to the bed body can be collected by the plurality of sound collection units. Thereby, the inverse noise of the sounds generated in the plurality of directions is output from the sound output unit

Effect of the Invention

[0017] As described above, according to the dozing device according to the present invention, the brain waves can be measured during dozing without disturbing sleep.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0019] The catnap device 10 according to the embodiment will be described with reference to the drawings. Note that the arrows FR, UP, and RH appropriately marked in each figure indicate the front of the seat, the upward direction of the seat, and the right side in the seat width direction of the bed body 12 constituting the catnap device 10, respectively. The front direction of the seat of the bed body 12 is the direction in which the user of the bed body 12 faces forward in a sitting posture. The right side in the seat width direction is the right direction when viewed from the state of sitting on the bed body. Hereinafter, when simply explaining using the front-back, up-down, and left-right directions, unless otherwise specified, it shall indicate the front-back in the seat front-back direction, the up-down in the seat up-down direction, and the left-right in the seat width direction.

[0020] As shown in FIGS. 1 and 2, the catnap device 10 according to the present embodiment mainly includes a bed body 12, a restraint portion 52 provided on the bed body 12, a rotation mechanism 22, a head-side frame 14, a foot-side frame 16, a curtain 18, and an electroencephalogram sensor 54 as an electroencephalogram acquisition portion.

[0021] (Bed body 12) The bed body 12 is configured to be able to support the body of the user P in a sitting state and a supine state, and includes a seat portion 12A, an upper body support portion 12B, and a lower leg support portion 12C.

[0022] As shown in FIGS. 3 and 4, the seat portion 12A of the bed body 12 is configured to support the buttocks and thighs of the user P from below, and is slightly inclined such that the rear portion of the seat portion 12A is positioned lower than the front portion in a side view.

[0023] The seat portion 12A includes a seat frame 26 that constitutes the skeleton of the seat portion 12A and a cushioning material that covers the seat frame 26 and supports the user. Further, a heater (not shown) for warming the buttocks and thighs of the user P is provided in the seat portion 12A.

[0024] A upper body support portion 12B is rotatably connected to the rear end portion (one end portion) of the seat portion 12A. The upper body support portion 12B is inclined such that the rear end portion side is positioned higher than the front end portion connected to the seat portion 12A, and the upper body of the user P is supported from below by the upper body support portion 12B.

[0025] The upper body support portion 12B includes an upper frame 28 that constitutes the skeleton of the upper body support portion 12B and a cushioning material (not shown) that covers the upper frame 28 and supports the user. Further, a heater (not shown) for warming the upper body of the user P is provided in the upper body support portion 12B.

[0026] On the other hand, a lower leg support portion 12C is rotatably connected to the front end portion (the other end portion) of the seat portion 12A. The lower leg support portion 12C is inclined such that the front end portion is positioned lower than the rear end portion connected to the seat portion 12A, and the lower legs of the user are supported from below by the lower leg support portion 12C.

[0027] The lower leg support part 12C includes a lower frame 30 that constitutes the skeleton of the lower leg support part 12C and a cushioning material (not shown) that covers the lower frame 30 and supports the user. Further, a heater (not shown) for warming the lower leg of the user P is provided in the lower leg support part 12C. And the seat part 12A, the upper body support part 12B, and the lower leg support part 12C are integrally covered by the skin. For this reason, the bed body 12 appears as an integrated sheet in which the seat part 12A, the upper body support part 12B, and the lower leg support part 12C are continuous, but it does not have to be an integrated sheet in terms of appearance and structure. For example, a structure in which the seat part 12A, the upper body support part 12B, and the lower leg support part 12C are each independently covered by the skin may also be used.

[0028] Here, the bed body 12 is configured to be mutually deformable between a chair shape and a bed shape by a rotation mechanism 22. FIG. 3 shows a state in which the bed body 12 is in a chair shape, and FIG. 4 shows a state in which the bed body 12 is in a bed shape.

[0029] (Rotation mechanism 22) As shown in FIG. 3, as an example, the rotation mechanism 22 in the present embodiment includes an upper motor 32 for rotating the upper body support part 12B with respect to the seat part 12A, an upper cylinder 34, and an upper link 36. Further, the rotation mechanism 22 includes a lower motor 38 for rotating the lower leg support part 12C with respect to the seat part 12A and a lower cylinder 40.

[0030] The upper motor 32 is composed of a motor such as a stepping motor and a servo motor attached to the lower surface side of the seat part 12A, and is driven by power supplied from a power source (not shown) to generate a rotational force. The upper cylinder 34 includes a case 34A and a rod 34B, and is configured such that the rod 34B extends or contracts with respect to the case 34A when the rotational motion of the upper motor 32 is converted into a linear motion.

[0031] An upper link 36 is connected to the tip of the rod 34B. The upper link 36 is formed in a long shape, one end of the upper link 36 is rotatably connected to the tip of the rod 34B, and the other end of the upper link 36 is rotatably connected to the upper frame 28 via the upper bracket 44. Further, a long hole 36A penetrating in the sheet width direction is formed between one end and the other end of the upper link 36, and a shaft portion 37 extending in the sheet width direction is inserted into the long hole 36A.

[0032] Here, when the upper motor 32 is driven from the chair shape in FIG. 3 to move the rod 34B of the upper cylinder 34 toward the case 34A side, the rod 34B shifts to the contracted state as shown in FIG. 4. Along with the contraction of the rod 34B, the upper link 36 rotates clockwise about the shaft portion 37 while moving forward of the seat along the shaft portion 37, so that the upper link 36 becomes a collapsed bed shape. In the present embodiment, even when the bed body 12 is in the state of shifting to the bed shape, the seat portion 12A and the upper body support portion 12B do not become flat, and the upper body support portion 12B is slightly inclined upward with respect to the seat portion 12A. Thereby, it becomes difficult for the user P to fall into a deep sleep and can wake up with a short nap.

[0033] A lower motor 38 is disposed in front of the upper motor 32. The lower motor 38 is composed of a motor such as a stepping motor and a servo motor attached to the lower surface side of the seat portion 12A, and is driven by power supplied from a power source (not shown) to generate a rotational force. The lower cylinder 40 includes a case 40A and a rod 40B, and is configured such that the rod 40B extends or contracts with respect to the case 40A when the rotational motion of the lower motor 38 is converted into a linear motion.

[0034] The tip of the rod 40B is rotatably connected to a lower bracket 42 attached to the lower surface of the lower frame 30. A long hole 42A is formed in the lower bracket 42, and the tip of the rod 40B is configured to be movable along the long hole 42A.

[0035] Here, when the lower motor 38 is driven from the chair shape in FIG. 3 to extend the rod 40B of the lower cylinder 40, the tip of the rod 34B moves along the long hole 42A, and the lower frame 30 moves in a direction away from the seat frame 26. This state is a bed shape state in which the angle between the seat portion 12A and the lower leg support portion 12C is opened. Thus, the bed body 12 is configured to be deformable into an arbitrary shape between the chair shape shown in FIG. 3 and the bed shape shown in FIG. 4.

[0036] (Foot side frame 16) As shown in FIGS. 1 and 2, the foot side frame 16 is disposed at the end of the lower leg support portion 12C side of the bed body 12, and is formed in a substantially cylindrical shape with both sides on the front side and the rear side of the seat being open. Further, the foot side frame 16 has a substantially oval shape that is long in the vertical direction when viewed from the front-rear direction, and the lower end portion of the foot side frame 16 is fixed to the connecting plate 17. The connecting plate 17 is formed in a substantially rectangular plate shape with the longitudinal direction being the front-rear direction of the seat. The head side frame 14 is fixed to the rear end portion of the connecting plate 17, and the foot side frame 16 is fixed to the front end portion of the connecting plate 17.

[0037] The front opening of the foot side frame 16 is closed by the front side fabric member 25 having elasticity. Further, a front rail 16A is provided in the rear opening of the foot side frame 16, and the front end portion of a curtain 18 described later is attached to this front rail 16A.

[0038] (Head side frame 14) The head side frame 14 is disposed at the end of the upper body support portion 12B side of the bed body 12, and is formed in a substantially cylindrical shape with both sides on the front side and the rear side of the seat being open. Further, the head side frame 14 has a substantially oval shape that is long in the vertical direction when viewed from the front-rear direction, and the lower end portion of the head side frame 14 is fixed to the connecting plate 17.

[0039] In addition, a support base 20 in which a part of the rotation mechanism 22 is accommodated is provided inside the head-side frame 14, and the bed body 12 is supported on this support base 20.

[0040] As shown in FIG. 2, the rear opening in the head-side frame 14 is blocked by the rear-side fabric member 24. The rear-side fabric member 24 is formed of an elastic fabric material and is attached to the peripheral edge of the head-side frame 14. Further, as an example, the rear-side fabric member 24 of the present embodiment is formed of a fabric material that reflects a part of light, so it is difficult to see inside from the outside of the nap device 10, and the situation outside the nap device 10 can be visually recognized by the user inside.

[0041] In addition, a rear rail 14A is provided at the front opening in the head-side frame 14. The rear rail 14A is provided along the upper opening edge of the head-side frame 14, and the rear end portion of a curtain 18 described later is attached to this rear rail 14A.

[0042] As shown in FIG. 4, the head-side frame 14 is inclined so that the upper part is located on the rear side (opposite to the foot-side frame 16) rather than the lower part. Further, the head-side frame 14 is designed to cover the side and upper parts of the portion that supports the head H of the user P supported by the bed-shaped bed body 12.

[0043] As shown in FIG. 2, a plurality of sound collecting portions 51 for collecting the sound around the bed body 12 are provided on the outer surface of the head-side frame 14. Specifically, the sound collecting portions 51 are provided on the right side surface and the left side surface of the head-side frame 14 respectively, and these sound collecting portions 51 are configured to include microphones.

[0044] As shown in FIGS. 3 and 4, a sound output unit 56 capable of outputting sound toward the user P is provided on the inner surface of the head-side frame 14. The sound output unit 56 is provided on the inner surface at the upper end of the head-side frame 14 and includes a speaker. Further, the sound output unit 56 is configured to be able to output an inverse-phase sound of the sound collected by the sound collection unit 51.

[0045] (Curtain 18) As shown in FIG. 1, the curtain 18 is a cloth-like member spanned between the head-side frame 14 and the foot-side frame 16. The front end of the curtain 18 is attached to the front rail 16A, and the rear end of the curtain 18 is attached to the rear rail 14A. By moving the curtain 18 along the front rail 16A and the rear rail 14A, it is shifted from the closed position covering the upper part of the bed body 12 to the open position opening the upper part of the bed body 12. FIG. 1 shows the state where the curtain 18 has moved to the closed position, and FIG. 2 shows the state where the curtain 18 has moved to the open position.

[0046] Since the curtain 18 is made of a material that allows a part of external light to pass through, even when the curtain 18 covers the upper part of the user P in the closed position, a part of the external light passes through the curtain 18 and enters the inside of the nap device 10, etc., so that the field of view of the user P can be secured.

[0047] As shown in FIGS. 3 and 4, since the head-side frame 14 is formed to be longer in the vertical direction than the foot-side frame 16, the curtain 18 extends obliquely downward from the head-side frame 14 toward the foot-side frame 16 in the closed position.

[0048] (Restraining portion 52) As shown in FIG. 2, a restraining portion 52 for restraining the head H or the neck N of the user P is provided on the upper body support portion 12B of the bed body 12. A pair of the restraining portions 52 of the present embodiment are provided on the left and right, and each projects from the upper body support portion 12B. Further, a gap wider than the width of the head H of the user P is provided between the left and right restraining portions 52.

[0049] Here, the restraint portion 52 of the present embodiment is configured to be movable in the vertical direction along the upper body support portion 12B. For example, a pair of left and right rail members may be disposed inside the upper body support portion 12B, and the restraint portion 52 may be configured to be movable along the rail members. Further, the left and right restraint portions 52 are connected by a connecting portion (not shown) inside the upper body support portion 12B, and the left and right restraint portions 52 move integrally.

[0050] Note that the restraint portion 52 may be configured to be manually movable, or may be provided with an electric moving mechanism. For example, it may be configured such that the restraint portion 52 can be electrically moved to an arbitrary position using power such as a stepping motor.

[0051] (Electroencephalogram sensor 54) An electroencephalogram sensor 54 for acquiring an electroencephalogram is provided at a position corresponding to the head H of the user P. The electroencephalogram sensor 54 of the present embodiment is provided between the left and right restraint portions 52. Further, the electroencephalogram sensor 54 is attached to a connecting portion (not shown) that connects the left and right restraint portions 52. For this reason, when the restraint portion 52 is moved, the electroencephalogram sensor 54 is configured to move in conjunction. That is, regardless of the position of the restraint portion 52, the positional relationship between the restraint portion 52 and the electroencephalogram sensor 54 does not change.

[0052] In addition, in this embodiment, the electroencephalogram acquisition unit is configured by a single electroencephalogram sensor 54, but it is not limited to this. For example, an electroencephalogram sensor 54 may be used as the first sensor, and a configuration including a second sensor different from this electroencephalogram sensor 54 may be adopted. In this case, while acquiring an electroencephalogram from the posterior head of the user P by the electroencephalogram sensor 54 which is the first sensor, an electroencephalogram may be acquired from the frontal lobe of the user P by the second sensor. That is, the second sensor may be provided at a position corresponding to the frontal lobe of the user P. For example, a bracket capable of attaching the second sensor is provided on the head-side frame 14, and by extending the bracket toward the head of the user P, the second sensor can be mounted at a position close to the frontal lobe of the user P. Further, a moving mechanism for moving the second sensor may be provided, and after shifting from the chair shape to the bed shape, the second sensor may be brought close to the vicinity of the frontal lobe of the user by the moving mechanism. In a configuration using two sensors, namely the first sensor and the second sensor, the accuracy of the acquired electroencephalogram data is improved.

[0053] As shown in FIGS. 1 and 2, the dozing device 10 is provided with a controller 50 as a control unit. The controller 50 includes, for example, a CPU (Central Processing Unit: processor), a ROM (Read Only Memory), a RAM (Random Access Memory), a storage, and a communication interface. Further, the controller 50 is electrically connected to the upper motor 32, the lower motor 38, the sound collection unit 51, the sound output unit 56, and the electroencephalogram sensor 54.

[0054] The upper motor 32 and the lower motor 38 are stepping motors or servo motors constituting the rotation mechanism 22, and are driven based on signals from the controller 50. The sound collection unit 51 collects sounds around the bed main body 12 based on signals from the controller 50, and the collected sound data is transmitted to a noise canceling unit (not shown).

[0055] The controller 50 generates an inverted-phase sound by a noise canceling unit (not shown) and outputs the inverted-phase sound from the sound output unit 56. Further, the controller 50 stores the brain wave data acquired by the brain wave sensor 54 in a storage or an external server or the like.

[0056] (Operation) Next, the operation of the present embodiment will be described.

[0057] In the hibernation device 10 of the present embodiment, the brain wave sensor 54 is provided at a position corresponding to the head H of the user P on the bed body 12 capable of supporting the body of the user P. Thereby, the brain wave of the user P can be acquired during hibernation.

[0058] Further, the bed body 12 is provided with a restraint unit 52 that restrains the head H or the neck N of the user P. Thereby, it is possible to suppress the position of the head H of the user P from moving greatly during hibernation. In particular, in the present embodiment, since the restraint unit 52 is configured to be movable, the head H of the user P can be restrained regardless of the height and build of the user P.

[0059] Furthermore, in the present embodiment, since the brain wave sensor 54 moves in conjunction with the restraint unit 52, even when the user P moves the restraint unit 52, the brain wave sensor 54 can be aligned with the position of the head H of the user P, and the brain wave of the user P can be acquired.

[0060] Furthermore, in the present embodiment, the sound around the bed body 12 is collected by the sound collection unit 51 provided on the outer surface of the head side frame 14, and the inverted-phase sound of the sound collected by the sound collection unit 51 is output from the sound output unit 56 provided on the inner surface of the head side frame 14 toward the user P. Thereby, the sound around the user P can be canceled, and the user P can hibernate without being concerned about the surrounding sound.

[0061] In addition, the plurality of sound collection units 51 can collect sounds from a plurality of directions with respect to the bed main body 12. As a result, the inverse noise of the sounds generated in the plurality of directions can be output from the sound output unit 56 to the user P, and the accuracy of noise cancellation can be improved.

[0062] In the present embodiment, the user P's head H is restrained by a pair of restraint units 52 provided on the left and right, but the present invention is not limited to this. For example, the configuration of the modified example shown in FIGS. 5 and 6 may be adopted.

[0063] (Modified Example) As shown in FIGS. 5 and 6, this modified example has the same configuration as the above-described embodiment except for the restraint unit 62.

[0064] On the upper body support portion 12B of the bed main body 12, a restraint portion 62 for restraining the neck N of the user P is provided. The restraint portion 62 of the present embodiment is provided at the center in the width direction of the upper body support portion 12B, and is formed in a substantially rectangular parallelepiped shape with the width direction as the longitudinal direction.

[0065] A concave portion 62A is formed on the upper surface of the restraint portion 62. The concave portion 62A is formed at the center in the width direction of the restraint portion 62, and is recessed toward the bed main body 12 side. Further, the concave portion 62A corresponds to the shape of the neck N of the user P, and is configured such that the neck N is supported by the concave portion 62A.

[0066] A brain wave sensor 54 for acquiring brain waves is provided on the tip side of the upper body support portion 12B rather than the restraint portion 62. The brain wave sensor 54 is provided at a position corresponding to the head H of the user P in a state where the neck of the user P is supported by the restraint portion 62.

[0067] The restraint portion 62 is configured to be movable in the vertical direction along the upper body support portion 12B, and the brain wave sensor 54 is configured to move in conjunction with the restraint portion 62. Therefore, regardless of the position of the restraint portion 62, the positional relationship between the restraint portion 62 and the brain wave sensor 54 does not change.

[0068] According to the nap device 10 according to this modification example, since the head H of the user P itself is not restrained, the field of view is not blocked by the restraint part. Further, since there is no feeling of pressure by the restraint part, it is possible to acquire brain wave data while ensuring the convenience of the user P.

[0069] As described above, the nap device 10 according to the embodiment and the modification example has been described. However, it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention. For example, the shape and configuration of the restraint part are not limited to the structures of the above-described embodiment and modification example, and other structures may be used.

[0070] Further, in the above-described embodiment, the configuration is such that the electroencephalogram sensor 54 moves in conjunction with the restraint part 52, but the present invention is not limited to this. For example, a structure in which the electroencephalogram sensor 54 is fixed to the upper body support part 12B may be used. Even in this case, if the height of the user P is within a predetermined range, brain waves can be acquired. Further, a nap device may be provided for each height of the user P.

[0071] Furthermore, in the above-described embodiment, the sound collection part 51 and the sound output part 56 are provided in the head side frame 14, but the present invention is not limited to this. For example, if a headset or the like connected to the nap device 10 is provided and the headset is equipped with a noise canceling function, the same effects as those of the above-described embodiment can be obtained. However, from the viewpoint of being able to cancel the surrounding sound without wearing a device, it is preferable to provide the sound collection part 51 and the sound output part 56 in the head side frame 14.

[0072] Furthermore, in the above-described embodiment, the upper motor 32 for rotating the upper body support part 12B with respect to the seat part 12A and the lower motor 38 for rotating the lower leg support part 12C with respect to the seat part 12A are included to constitute the rotation mechanism 22, but the present invention is not limited to this. For example, a configuration in which the bed body 12 is shifted from a chair shape to a bed shape using another mechanism may be used.

[0073] In addition, the bed body 12, the head-side frame 14, the foot-side frame 16, and the curtain 18 are not limited to the shapes of the above-described embodiment, and may be formed in other shapes as long as the effects of the present invention can be obtained. For example, the curtain may be configured to open and close automatically, or may be configured to include a curtain made of metal or resin.

Explanation of Reference Numerals

[0074] 10 Nap device 12 Bed body 14 Head-side frame 51 Sound collection unit 52 Restraint unit 54 Electroencephalogram sensor (electroencephalogram acquisition unit) 56 Sound output unit H Head N Neck P User

Claims

1. A bed body capable of supporting the user's body, a restraint portion provided on the bed body for restraining the user's head or neck, an electroencephalogram acquisition portion provided at a position corresponding to the user's head in a state where the user's head or neck is restrained by the restraint portion, for acquiring an electroencephalogram, comprising: the restraint portion is provided as a pair on the left and right, separate from the bed body, projecting from the bed body respectively, and configured to be movable, the electroencephalogram acquisition portion is provided between the pair of left and right restraint portions, and attached to a connecting portion connecting the pair of left and right restraint portions, a dozing device.

2. The dozing device according to Claim 1, wherein the electroencephalogram acquisition portion includes a first sensor provided at a position corresponding to the back of the user's head and a second sensor provided at a position corresponding to the frontal lobe of the user in a state where the user's head or neck is restrained by the restraint portion.

3. A head-side frame covering the side portion and the upper portion of the portion of the bed body that supports the user's head, a sound collection portion provided on the outer surface of the head-side frame for collecting sounds around the bed body, a sound output portion provided on the inner surface of the head-side frame for outputting sounds toward the user, further comprising: generating an inverse-phase sound of the sound collected by the sound collection portion, and outputting the inverse-phase sound from the sound output portion, the dozing device according to Claim 1 or 2.

4. The dozing device according to Claim 3, wherein a plurality of the sound collection portions are provided on the outer surface of the head-side frame, and the sound output portion is provided on the inner surface at the upper end portion of the head-side frame.

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