JP2010124860A - Bed apparatus and control method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the safety of a bed apparatus by concaving a bed surface by locating both side edges of the bed surface of a mat higher than the center. <P>SOLUTION: The bed apparatus 10 includes: the mat 12 having the approximately rectangular bed surface 12a on which a user is laid; and a deforming means for concaving the bed surface 12a by locating the side edges 12e of the bed surface 12a of the mat 12 higher than the center 12f. The deforming means preferably includes a pump device 13 for deforming a left side chamber 12b, a center chamber 12c and a right side chamber 12d of the mat 12 by making fluid flow into/out of the left side chamber 12b, center chamber 12c and right side chamber 12d respectively; and a control portion 14 for operating the pump device 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bed apparatus that allows a user to sleep and a control method thereof, and more particularly to a bed apparatus that improves safety and a control method thereof.

2. Description of the Related Art Conventionally, there is known a nursing bed in which a mat portion is inclined by inflating and deflating an air bag to change a user's posture (see Patent Document 1). In the care bed, for example, handrails are provided on both side edges of the bed body so that a user sleeping on the mat portion does not fall.
JP 2007-185235 A

  However, in the care bed, for example, when the user rolls over or the like, there is a possibility that the body such as the user's limbs may come into contact with the handrail part, and anxiety is felt in terms of safety.

  The present invention has been made to solve such problems, and a main object of the present invention is to provide a bed apparatus with improved safety and a control method thereof.

  One aspect of the present invention for achieving the above object is a bed apparatus including a mat portion having a substantially rectangular bed surface for laying a user, wherein both side edges of the bed surface of the mat portion are located at a position higher than a central portion. It is a bed apparatus characterized by comprising a deformation means for deforming the bed surface into a concave shape at a high position. According to this aspect, the safety of the bed apparatus can be improved.

  In this aspect, the deformation means may expand both sides of the mat portion to deform the bed surface of the mat portion into the concave shape.

  In this one aspect, the mat portion has a left chamber, a central chamber, and a right chamber that can be deformed by fluid flowing in and out, and the deformation means includes the left chamber, A pump device that causes fluid to flow into and out of the central chamber and the right chamber and deforms the left chamber, the central chamber, and the right chamber, respectively, and an operation unit for operating the pump device. Also good.

  In this aspect, the deforming means may be configured to bend the both sides of the mat portion with respect to the central portion and deform the bed surface of the mat portion into the concave shape.

  In this aspect, the deformation means may include a lifting device that lifts both side portions of the mat portion with respect to the central portion, and an operation portion for operating the lifting device.

  In this aspect, the lifting device may include a pair of arm portions that lift both side portions of the mat portion, an actuator that drives the arm portion, and a control unit that controls the actuator.

  In this one aspect, the bed further includes a bed main body on which the mat portion is placed, and a pair of handrail portions provided on both side edges of the bed main body, and at least one of the handrail portions is: It may be provided so as to be slidable in the vertical direction.

  In this one aspect, it further comprises detection means for detecting a state in which the user is sleeping on the bed surface of the mat portion, and the deformation means is configured to detect the sleeping state when the detection means detects the sleeping state. The surface may be deformed into a concave shape.

  On the other hand, one aspect of the present invention for achieving the above object is a method of controlling a bed apparatus including a mat portion having a substantially rectangular bed surface for laying a user, and both side edges of the bed surface of the mat portion. The bed apparatus control method may include a deforming step of deforming the bed surface into a concave shape by positioning the bed surface higher than the central portion.

  In this one aspect, the mat portion has a left chamber, a central chamber, and a right chamber that can be deformed by fluid flowing in and out, and the deformation step includes the left chamber and the left chamber. An expansion step may be included in which a fluid is caused to flow into the right chamber and the left chamber and the right chamber are expanded.

  In this one aspect, the deformation step may include a raising step for raising both side portions of the mat portion.

  According to the present invention, the safety of the bed apparatus can be improved.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
(First embodiment)

  1A and 1B are schematic views illustrating an example of a system configuration of a bed apparatus according to the first embodiment of the present invention. 1A is a view of the bed body 11 and the mat portion 12 as viewed from the front, and FIG. 1B is a view of the bed body 11 and the mat portion 12 as viewed from above. The bed apparatus 10 according to the first embodiment includes a bed main body 11, a mat part 12, a pump apparatus 13, an operation part 14, and a pair of handrail parts 15.

  The bed main body 11 has a bed portion 11a formed in a flat rectangular parallelepiped shape, and four leg portions 11b that are respectively erected at four corners of the bed portion 11a and support the bed portion 11a. The mat portion 12 is placed on the upper surface of the bed portion 11a.

  The mat portion 12 is formed in a flat rectangular parallelepiped shape, and a substantially rectangular (rectangular) bed surface 12a that allows the user to lie down is formed on the upper surface thereof. The mat portion 12 has a left chamber 12b, a central chamber 12c, and a right chamber 12d that can be deformed by a gas such as air flowing in and out. The left chamber 12b, the central chamber 12c, and the right chamber 12d extend, for example, in the entire length direction of the mat portion 12 (the direction in which the user sleeps) and are formed in parallel to each other.

  Each chamber 12b, 12c, 12d is independently expanded by allowing gas to flow into the left chamber 12b, the central chamber 12c, and / or the right chamber 12d, or the left chamber 12b, the central chamber 12c, and / or the right chamber By letting gas flow out of the chamber 12d, each chamber 12b, 12c, 12d can be contracted independently, and the mat portion 12 can be deformed into a desired shape.

  For example, the thickness of the mat portion 12 can be gradually increased from the central portion 12f side to the side edge portions 12e by inflating the gas by flowing into the left chamber 12b and the right chamber 12d. FIG. 2 (a)). Thereby, both side edge portions 12e of the bed surface 12a of the mat portion 12 are positioned higher than the center portion 12f, and the bed surface 12a can be deformed into a concave shape such as a substantially arc shape. Moreover, the bed surface 12a of the mat part 12 can be made substantially planar by making the pressure in the left chamber 12b, the central chamber 12c, and the right chamber 12d substantially the same (FIG. 2 (b)).

  Pump devices 13 are connected to the left chamber 12b, the central chamber 12c, and the right chamber 12d of the mat portion 12 via pipes 13a, respectively. The pump device 13 is installed, for example, on the outside of the bed body 11 or the lower part of the bed body 11. The pump device 13 supplies gas into the left chamber 12b, the central chamber 12c, and / or the right chamber 12d of the mat portion 12 through the pipe 13a, so that the gas flows into the chambers 12b, 12c, and 12d. And each chamber 12b, 12c, 12d can be freely expanded.

  On the other hand, the pump device 13 sucks gas from the left chamber 12b, the central chamber 12c, and / or the right chamber 12d of the mat portion 12 through the pipe 13a, thereby allowing gas from the chambers 12b, 12c, and 12d. The chambers 12b, 12c and 12d can be freely contracted. In this manner, the pump device 13 can deform the mat portion 12 into a desired shape by expanding and / or contracting the left chamber 12b, the central chamber 12c, and / or the right chamber 12d.

  An operation unit 14 that can be operated by a user is connected to the pump device 13. The operation unit 14 includes, for example, a plurality of push-type switches, and is provided at a position where the user can easily operate the bed main body 11 or the handrail unit 15.

  When the user switches the operation unit 14, the operation unit 14 outputs an operation signal to the pump device 13 in accordance with the switch operation. The pump device 13 deforms the mat portion 12 into a desired shape in response to an operation signal from the operation portion 14. Thus, the user can freely deform the shape of the mat portion 12 via the operation portion 14 and the pump device 13.

  The bed main body 11 is provided with a pair of handrail portions 15 on both sides of the mat portion 12. The handrail portion 15 can reliably prevent a user sleeping on the mat portion 12 from falling from the mat portion 12 and improve safety.

  Further, at least one of the pair of handrail portions 15 is provided to be slidable in the vertical direction. For example, by sliding one handrail portion 15 downward (FIG. 2B), the user can easily get on the mat portion 12 and sleep from the side on which the handrail portion 15 of the bed body 11 is slid. Can do. Thereafter, the user's falling can be reliably prevented by sliding the handrail portion 15 upward.

  By the way, in the conventional bed apparatus, for example, when the user rolls over, the body such as the user's limbs may come into contact with the handrail part, and anxiety is felt in terms of safety.

  Therefore, in the bed apparatus 10 according to the present embodiment, when the user is sleeping on the bed surface 12a of the mat portion 12, the pump device 13 sets the side edge portions 12e of the bed surface 12a more than the central portion 12f. At a high position, the bed surface 12a of the mat portion 12 is deformed into a concave shape (FIG. 2A). Thereby, it can suppress reliably that the body of the user who is sleeping approaches the handrail part 15, and it can prevent reliably that bodies, such as a user's limb, contact the handrail part 15. FIG.

  FIG. 3 is a flowchart illustrating an example of an operation flow of the bed apparatus according to the first embodiment. For example, the user slides the handrail portion 15 downward (step S101), rides on the mat portion 12 (FIG. 2B), and then slides the handrail portion 15 upward (step S102). At this time, the pressures in the left chamber 12b, the central chamber 12c, and the right chamber 12d of the mat portion 12 are substantially the same, and the bed surface 12a is substantially flat.

  Next, when the user goes to sleep on the mat unit 12 and performs a switch operation on the operation unit 14 (step S103), the operation unit 14 outputs an operation signal to the pump device 13 (step S104).

  The pump device 13 supplies gas to the left chamber 12b and the right chamber 12d of the mat unit 12 in response to an operation signal from the operation unit 14 (step S105). As a result, gas flows into the left chamber 12b and the right chamber 12d of the mat portion 12, the left chamber 12b and the right chamber 12d expand (expansion step) (step S106), and both side edges of the bed surface 12a of the mat portion 12 The portion 12e is positioned higher than the central portion 12f, and the bed surface 12a is deformed into a substantially arc shape (deformation step) (FIG. 2A) (step S107).

  The arc-shaped bed surface 12a can reliably prevent the sleeping user's body from approaching the handrail portion 15 and reliably prevent the user's limbs and the like from contacting the handrail portion 15.

  On the other hand, when the user gets off from the mat portion 12, when the user performs a switch operation on the operation portion 14 (step S108), the operation portion 14 outputs an operation signal to the pump device 13 (step S109). The pump device 13 sucks the gas from the left chamber 12b and the right chamber 12d of the mat portion 12 in response to an operation signal from the operation portion 14 (step S110).

  As a result, gas flows out from the left chamber 12b and the right chamber 12d of the mat portion 12, and the left chamber 12b and the right chamber 12d contract (step S111), so that the bed surface 12a of the mat portion 12 becomes substantially planar. Deformation (FIG. 2B) (step S112). Thereafter, the user can slide the handrail portion 15 downward (step S113) and get off the mat portion 12.

  As described above, in the bed apparatus 10 according to the first embodiment, when the user is sleeping on the bed surface 12a of the mat portion 12, the pump device 13 sets the side edge portions 12e of the bed surface 12a from the center portion 12f. Also, the bed surface 12a of the mat portion 12 is deformed into a concave shape. Thereby, it can suppress reliably that the body of the user who is sleeping approaches the handrail part 15, and it can prevent reliably that bodies, such as a user's limb, contact the handrail part 15. FIG. Therefore, the safety of the bed apparatus 10 can be improved.

  Next, a modified example of the bed apparatus 10 according to the first embodiment of the present invention will be described.

  In the first embodiment, a plurality of chambers may be defined in the left chamber 12b, the central chamber 12c, and the right chamber 12d of the mat portion 12, respectively. By deforming and contracting the plurality of chambers defined in the left chamber 12b, the central chamber 12c, and the right chamber 12d, the deformation of the mat portion 12 can be controlled with higher accuracy. Note that the left chamber 12b, the central chamber 12c, and the right chamber 12d can have any configuration as long as the bed surface 12a of the mat portion 12 can be optimally deformed into the concave shape.

  In the first embodiment, the gas flows into and out of the left chamber 12b, the central chamber 12c, and the right chamber 12d of the mat portion 12. However, the present invention is not limited thereto, and the left chamber 12b, the central chamber 12c, and the right chamber are not limited thereto. The configuration may be such that the liquid flows into and out of the chamber 12d.

  In the said 1st Embodiment, although the pump apparatus 13 has changed the bed surface 12a of the mat | matte part 12 into concave shape according to switch operation of the operation part 14, not only this but the pump apparatus 13 is a user's The state of sleeping on the bed surface 12a of the mat portion 12 is detected by using a sensor (detection means) such as a load sensor or a biological sensor (for example, a temperature sensor), and the bed surface 12a of the mat portion 12 is automatically recessed. You may make it change. On the other hand, when the pump device 13 detects that the user is not sleeping on the bed surface 12a of the mat portion 12 using a sensor, the pump device 13 automatically deforms the bed surface 12a of the mat portion 12 into a flat shape. Also good. Thereby, since switch operation in the operation part 14 is unnecessary, a user's convenience can be improved.

  In the first embodiment, the pump device 13 deforms the bed surface 12a of the mat portion 12 into a concave shape by allowing gas to flow into the left chamber 12b and the right chamber 12d of the mat portion 12. For example, the bed surface 12a of the mat portion 12 may be deformed into a concave shape by allowing gas to flow out from the central chamber 12c.

In the first embodiment, the bed surface 12a of the mat portion 12 is deformed in a substantially arc shape. However, the present invention is not limited to this, and the bed surface is located at a position where both side edge portions 12e of the mat portion 12 are higher than the central portion 12f. Any deformation method can be applied as long as 12a is concave and the body of the sleeping user can be reliably prevented from approaching the handrail portion 15.
(Second Embodiment)

  FIG. 4 is a schematic diagram showing an example of the system configuration of the bed apparatus according to the second embodiment of the present invention. The bed apparatus 20 according to the second embodiment includes a bed main body 21, a mat part 22, an elevating device 23, an operation part 24, and a pair of handrail parts 15.

  A mat portion 22 is placed on the upper surface of the bed main body 21. The mat portion 22 is, for example, a mattress or a futon that includes an elastic member such as a sponge material. The mat portion 22 may have an arbitrary structure as long as it has an appropriate cushion function and has a shape retaining property capable of maintaining a substantially thick plate shape.

  The bed main body 21 is provided with an elevating device 23. The elevating device 23 bends both side edges 22e of the mat portion 22 placed on the upper surface of the bed main body 21 with respect to the central portion 22f, thereby forming the mat portion. The 22 bed surfaces 22a can be deformed into a concave shape (FIG. 5A).

  The lifting and lowering device 23 has a pair of arm portions 23a, one end of which is swingably connected to the bed body 21, a motor (actuator) 23b that drives and swings the arm portion 23a, and a control that drives and controls the motor 23b. Part 23c (FIG. 6).

  The pair of arm portions 23a swings in a substantially reverse C shape in a direction approaching each other, thereby raising both side edge portions 22e of the mat portion 22 and deforming it along the upper surface of each arm portion 23a. Can do. Thereby, both side edge portions 22e of the mat portion 22 can be bent with respect to the central portion 22f, and the bed surface 22a of the mat portion 22 can be deformed into a concave shape (FIG. 5A).

  The motor 23b drives and swings the pair of arm parts 23a via the speed reduction mechanism 23d in accordance with a control signal output from the control part 23c. The control unit 23c generates a control signal based on the operation signal from the operation unit 24, and outputs the control signal to the motor 23b. The control unit 23c includes, for example, a CPU (Central Processing Unit) 231 that performs control processing, arithmetic processing, and the like, and a ROM (Read Only Memory) 232 that stores a control program, arithmetic program, and the like executed by the CPU 231; A hardware configuration is mainly made of a microcomputer having a RAM (Random Access Memory) 233 for temporarily storing processing data and the like.

  An operation unit 24 that can be operated by a user is connected to the lifting device 23. The operation unit 24 includes, for example, a plurality of push-type switches, and is provided at a position where the user can easily operate the bed main body 21 or the handrail unit 15.

  When the user performs a switch operation on the operation unit 24, the operation unit 24 outputs an operation signal to the control unit 23c of the lifting device 23 in accordance with the switch operation. The control part 23c controls the pair of arm parts 23a by driving and controlling the motor 23b in accordance with an operation signal from the operation part 24, thereby deforming the mat part 22 into a desired shape. Thus, the user can freely deform the shape of the mat portion 22 via the operation unit 24 and the lifting device 23.

  The other configuration of the bed apparatus 20 according to the second embodiment is substantially the same as that of the bed apparatus 10 according to the first embodiment. Therefore, the same parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 7 is a flowchart illustrating an example of an operation flow of the bed apparatus according to the second embodiment. For example, the user slides the handrail portion 15 downward (step S201), rides on the mat portion 22 (FIG. 5B), and then slides the handrail portion 15 upward (step S202). At this time, the pair of arm portions 23a are substantially linear, and the bed surface 22a of the mat portion 22 is substantially flat.

  Next, when the user goes to sleep on the mat unit 22 and performs a switch operation on the operation unit 24 (step S203), the operation unit 24 outputs an operation signal to the control unit 23c of the lifting device 23. (Step S204).

  The control unit 23c of the lifting device 23 outputs a control signal to the motor 23b in response to the operation signal from the operation unit 24 (step S204). Then, the motor 23b swings the pair of arm portions 23a in a substantially reverse C shape in the direction of approaching each other in response to a control signal from the control portion 23c, so that both side portions of the mat portion 22 are moved with respect to the central portion. (Step S205). Thereby, both side edge portions 22e of the bed surface 22a of the mat portion 22 are positioned higher than the central portion 22f, and the bed surface 22a is deformed into a concave shape (deformation step) (FIG. 5A) (step S206).

  In this way, by deforming the bed surface 22a of the mat portion 22 into a concave shape, it is possible to reliably prevent the sleeping user's body from approaching the handrail portion 15, and the user's limbs and the body contact the handrail portion. Can be surely prevented.

  On the other hand, when the user gets off the mat unit 22, when the user performs a switch operation of the operation unit 24 (step S207), the operation unit 24 outputs an operation signal to the control unit 23c of the lifting device 23 ( Step S208).

  The control unit 23c of the lifting device 23 outputs a control signal to the motor 23b in response to the operation signal from the operation unit 24 (step S209). Then, the motor 23b swings the pair of arm portions 23a in a substantially reverse C shape in a direction to be separated from each other in accordance with a control signal from the control portion 23c, so as to be substantially straight. Thereby, the bed surface 22a of the mat portion 22 is deformed into a substantially flat shape (FIG. 5B) (step S210). Thereafter, the user can slide the handrail portion 15 downward (step S211) and get off from the mat portion 22.

  As described above, in the bed device 20 according to the second embodiment, the control unit 23c of the elevating device 23 sets the side edges 22e of the bed surface 22a when the user is sleeping on the bed surface 22a of the mat unit 22. The bed surface 22a of the mat portion 22 is deformed into a concave shape at a position higher than the central portion 22f. Thereby, it can suppress reliably that the body of the user who is sleeping approaches the handrail part 15, and it can prevent reliably that bodies, such as a user's limb, contact the handrail part 15. FIG. Therefore, the safety of the bed apparatus 20 can be improved.

  Next, a modified example of the bed apparatus 20 according to the second embodiment of the present invention will be described.

  In the said 2nd Embodiment, although the control part 23c of the raising / lowering apparatus 23 has changed the bed surface 22a of the mat | matte part 22 into a concave shape according to switch operation of the operation part 24, it is not restricted to this, Control part 23c Detects a state in which the user is sleeping on the bed surface 22a of the mat portion 22 using a sensor (detection means) such as a load sensor or a biological sensor, and automatically sets the bed surface 22a of the mat portion 22 in a concave shape. It may be deformed. On the other hand, when the control unit 23c of the elevating device 23 detects that the user is not sleeping on the bed surface 22a of the mat unit 22 using a sensor, the bed surface 22a of the mat unit 22 is automatically planarized. You may make it deform | transform into. Thereby, since switch operation in the operation part 24 is unnecessary, a user's convenience can be improved.

  In the second embodiment, the bed surface 22a of the mat portion 22 is deformed into a concave shape by using a pair of arm portions 23a that are swingably coupled to the bed main body 21, but the mat portion is not limited thereto. Any arm mechanism can be applied as long as the 22 bed surfaces 22a can be deformed into a concave shape.

  In the second embodiment, the bed surface 22a is deformed into a concave shape by raising both side portions of the mat portion 22 with respect to the central portion. The bed surface 22a may be deformed into a concave shape by being lowered.

  Although the best mode for carrying out the present invention has been described using the above-described embodiment, the present invention is not limited to the above-described embodiment, and the scope of the present invention is not deviated. Various modifications and substitutions can be added to the above embodiment.

  For example, in the first and second embodiments, the handrail portion 15 may be configured to slide up and down by an actuator such as a motor. Thereby, the user can slide the handrail part 15 up and down easily.

(A) It is the schematic which shows an example of the system configuration | structure of the bed apparatus which concerns on 1st Embodiment of this invention, and is the figure which looked at the bed main body and the mat part from the front. (B) It is the schematic which shows an example of the system configuration | structure of the bed apparatus which concerns on 1st Embodiment of this invention, and is the figure which looked at the bed main body and the mat part from the upper direction. (A) It is a figure which shows an example of the state which changed the bed surface of the mat part of the bed apparatus which concerns on 1st Embodiment of this invention to substantially arc shape. (B) It is a figure which shows an example of the state which made the bed surface of the mat part of the bed apparatus concerning 1st Embodiment of this invention substantially planar shape. It is a flowchart which shows an example of the operation | movement flow of the bed apparatus which concerns on 1st Embodiment of this invention. (A) It is the schematic which shows an example of the system configuration | structure of the bed apparatus which concerns on 2nd Embodiment of this invention, and is the figure which looked at the bed main body and the mat part from the front. (B) It is the schematic which shows an example of the system configuration | structure of the bed apparatus which concerns on 2nd Embodiment of this invention, and is the figure which looked at the bed main body and the mat part from the upper direction. (A) It is a figure which shows an example of the state which changed the bed surface of the mat part of the bed apparatus which concerns on 2nd Embodiment of this invention into concave shape. (B) It is a figure which shows an example of the state which made the bed surface of the mat part of the bed apparatus concerning 2nd Embodiment of this invention substantially planar shape. It is a block diagram which shows an example of the system configuration | structure of the raising / lowering apparatus of the bed apparatus which concerns on 2nd Embodiment of this invention. It is a flowchart which shows an example of the operation | movement flow of the bed apparatus which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 20 Bed apparatus 11, 21 Bed main body 12, 22 Mat part 12a, 22a Bed surface 12b Left side room 12c Central room 12d Right side room 12e, 22e Both sides edge part 12f, 22f Central part 13 Pump apparatus 14, 24 Operation part 15 Handrail Unit 23 Lifting device 23a Arm unit 23b Motor 23c Control unit

Claims (11)

A bed apparatus including a mat portion having a substantially rectangular bed surface that lays a user down,
A bed apparatus comprising: deformation means for deforming the bed surface into a concave shape with both side edge portions of the bed surface of the mat portion being positioned higher than the center portion. The bed apparatus according to claim 1,
The bed device according to claim 1, wherein the deforming means expands both side portions of the mat portion to deform the bed surface of the mat portion into the concave shape. The bed apparatus according to claim 2,
The mat portion has a left side chamber, a central chamber, and a right side chamber, which can be deformed by fluid flowing in and out,
The deforming means is configured to cause a fluid to flow into and out of the left chamber, the central chamber, and the right chamber, and to deform the left chamber, the central chamber, and the right chamber, respectively, and to operate the pump device A bed apparatus comprising: an operation unit; The bed apparatus according to claim 1,
The bed device characterized in that the deforming means bends both side portions of the mat portion with respect to a central portion to deform the bed surface of the mat portion into the concave shape. The bed apparatus according to claim 4, wherein
The bed device, wherein the deforming means includes a lifting device that lifts both side portions of the mat portion with respect to a central portion, and an operation portion for operating the lifting device. The bed apparatus according to claim 5, wherein
The bed apparatus, comprising: a pair of arm portions that lift both side portions of the mat portion; an actuator that drives the arm portions; and a control unit that controls the actuator. The bed apparatus according to any one of claims 1 to 6,
A bed body on which the mat portion is placed on an upper surface thereof, and a pair of handrail portions provided on both side edges of the bed body,
At least one of the handrails is provided so as to be slidable in the vertical direction. The bed apparatus according to any one of claims 1 to 7,
A detecting means for detecting a state in which the user is sleeping on the bed surface of the mat portion;
The bed device according to claim 1, wherein the deforming means deforms the bed surface into a concave shape when the detecting means detects the sleeping state. A control method for a bed apparatus comprising a mat portion having a substantially rectangular bed surface for laying a user,
A bed apparatus control method comprising: a step of deforming the bed surface into a concave shape by setting both side edge portions of the bed surface of the mat portion to a position higher than a center portion. It is a control method of the bed apparatus according to claim 9,
The mat portion has a left side chamber, a central chamber, and a right side chamber, which can be deformed by fluid flowing in and out,
The method of controlling a bed apparatus, wherein the deformation step includes an expansion step of causing a fluid to flow into the left chamber and the right chamber and expanding the left chamber and the right chamber. It is a control method of the bed apparatus according to claim 9,
The method of controlling a bed apparatus, wherein the deformation step includes an ascending step of raising both side portions of the mat portion.

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