Frequency spectrum treatment room

Abstract

The utility model relates to the technical field of frequency spectrum treatment, in particular to a frequency spectrum treatment room, which comprises a room body, a seat and two armrest assemblies, a treatment room is arranged in the room body, the seat and the armrest assemblies are arranged in the treatment room, the seat is provided with a backrest part and a seat surface part, and the two armrest assemblies are respectively arranged on two sides of the seat along a first direction. The armrest assembly comprises an armrest body and a frequency spectrum generation inner plate, a containing cavity is formed in the armrest body, a plurality of first penetrating through holes are formed in the side face, close to the seat, of the armrest body, a plurality of second penetrating through holes are formed in the top face of the armrest body, and the frequency spectrum generation inner plate is arranged in the containing cavity. Infrared rays emitted by the frequency spectrum generation inner plate can penetrate through the first penetrating through hole to irradiate to the seat and penetrate through the first penetrating through hole to irradiate to the position above the armrest body; in conclusion, the handrail body of the frequency spectrum treatment room has a small blocking effect on infrared rays, and the irradiation coverage rate of the infrared rays on a patient can be effectively increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of spectrum therapy technology, in particular to a spectrum therapy room. BACKGROUND

[0002] At present, the spectrum therapy room is a kind of heat radiation treatment equipment using infrared to transmit the skin and tissue of human body to promote cell tissue activation and metabolism.In the process of spectrum therapy in spectrum therapy room, patients need to sit on the seat in the treatment room for a long time, in order to make infrared cover the whole body of the patient, the utility model patent with the authorization announcement No.CN221771326U discloses a spectrum therapy room, the seat in the treatment room is provided with multiple hollow structures, so that infrared can pass through the hollow structure and irradiate on the patient's body, but the armrest of the seat will block part of the infrared irradiation on the patient's body, specifically, infrared cannot irradiate from the side to the concave part below the seat surface part of the seat and the position below the seat surface part, and cannot irradiate to the bottom surface of the hand placed on the armrest, the armrest reduces the irradiation coverage of infrared on the patient, resulting in poor effect of spectrum therapy. SUMMARY

[0003] The utility model aims at providing a spectrum therapy room to solve the technical problem that the armrest of the seat in the spectrum therapy room of prior art has strong blocking effect on the infrared emitted by the spectrum plate, so that the infrared cannot effectively cover and irradiate to the position of the patient located at the seat surface part and below and the bottom surface of the hand placed on the armrest, resulting in poor effect of spectrum therapy.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a spectrum therapy room, which comprises a room body, a seat, two armrest assemblies, the room body is provided with a treatment room, the seat and the armrest assembly are arranged in the treatment room, the seat is sequentially provided with a backrest part and a seat surface part from top to bottom, the two armrest assemblies are respectively arranged on the two sides of the seat along a first direction, the armrest assembly comprises an armrest body and a spectrum generation inner plate, the top surface of the armrest body is higher than the top surface of the seat surface part and lower than the bottom surface of the backrest part, the armrest body is provided with an accommodating cavity, the side surface of the armrest body close to the seat is provided with a plurality of first penetrating through holes penetrating into the accommodating cavity, the top surface of the armrest body is provided with a plurality of second penetrating through holes penetrating into the accommodating cavity, the spectrum generation inner plate is arranged in the accommodating cavity, and the infrared emitted by the spectrum generation inner plate can pass through the first penetrating through hole and irradiate to the seat and the upper side of the armrest body.

[0005] Optionally, a plurality of first penetrating through holes are arranged in a vertical direction, and the first penetrating through hole penetrates the armrest body along a second direction.

[0006] Optionally, the armrest assembly further comprises a plurality of reinforcing plates arranged in the accommodating cavity, the reinforcing plates are arranged in a vertical direction, and the reinforcing plates are arranged in a second direction at intervals, the reinforcing plates span the first penetrating holes, and side surfaces of the reinforcing plates are connected to cavity walls close to the first penetrating holes.

[0007] Optionally, the second penetrating holes are long strip-shaped holes, and the second penetrating holes are arranged in a rectangular array in the first direction and the second direction.

[0008] Optionally, the armrest assembly further comprises a spectrum generation top plate, a first spectrum generation bottom plate, two spectrum generation main plates and two spectrum generation side plates arranged in the treatment room, the back part is provided with a plurality of third penetrating holes relative to a side surface in the second direction, a top surface of the seat surface part is provided with a plurality of fourth penetrating holes, the two spectrum generation main plates are arranged on two sides of the seat in the second direction respectively, the spectrum generation main plates are arranged towards the seat, the two spectrum generation side plates are arranged on two sides of the seat in the first direction respectively and above the armrest body, the first spectrum generation bottom plate is arranged upwards below the seat surface part, and the spectrum generation top plate is arranged downwards above the seat.

[0009] Optionally, the armrest assembly further comprises a second spectrum generation bottom plate, the seat is provided with a first bottom connecting part below the seat surface part, a side surface of the first bottom connecting part relative to the second direction is provided with a plurality of fifth penetrating holes, and the second spectrum generation bottom plate is arranged on a side of the first bottom connecting part close to the back part, infrared rays emitted by the second spectrum generation bottom plate can irradiate to the other side of the first bottom connecting part through the fifth penetrating holes.

[0010] Optionally, the seat is provided with a second bottom connecting part, the first bottom connecting part and the second bottom connecting part are arranged on two sides of a joint of the back part and the seat surface part in the second direction respectively, top and bottom ends of the first bottom connecting part are connected to a bottom surface of the seat surface part and a bottom surface of the treatment room respectively, and top and bottom ends of the second bottom connecting part are connected to the bottom surface of the seat surface part and the bottom surface of the treatment room respectively.

[0011] Optionally, a side surface of the house relative to the second direction is provided with a door hole communicating with the treatment room, a distance between the door hole and the seat surface part is less than a distance between the door hole and the back part, and the door hole is provided with a house door which can be opened and closed.

[0012] Optionally, the house door is provided with an observation window.

[0013] Optionally, the treatment room has a width of 600mm to 900mm along the first direction, a width of 800mm to 1200mm along the second direction, and a height of 1500mm to 2000mm, the armrest body has a width of 100mm to 140mm along the first direction and a height of 600mm to 750mm, the seat surface has a height of 350mm to 400mm, and the length of the seat surface protruding from the backrest along the second direction is 400mmn to 450mm, and the backrest is higher than the seat surface by 800mm to 900mm.

[0014] Compared with the prior art, the spectrum treatment room has the beneficial effects that:

[0015] In the spectrum treatment room, the seat and the armrest assembly are arranged in the treatment room of the room body, a patient can sit on the seat surface of the seat and then lean on the backrest of the seat, and then the hands are placed on the top surface of the armrest body of the armrest assembly on both sides, wherein the spectrum generation inner plate is arranged in the accommodating cavity of the armrest body, the orientation or structure of the irradiation unit of the spectrum generation inner plate is adjusted, the infrared rays emitted by the spectrum generation inner plate pass through the first penetrating through hole arranged on the side surface of the armrest body and irradiate to the position below the top surface of the armrest body, specifically, the side surface of the waist and the position below of the patient, further, the infrared rays emitted by the spectrum generation inner plate also pass through the second penetrating through hole arranged on the top surface of the armrest body and irradiate to the upper side of the armrest body, specifically, the bottom surface of the hand of the patient placed on the top surface of the armrest body, and the spectrum treatment room can make the infrared rays emitted by the spectrum generation plate cover and irradiate the side surface of the patient below the top surface of the armrest body and the bottom surface of the hand of the patient placed on the armrest body, the armrest body has a small blocking effect on the infrared rays, and the irradiation coverage of the infrared rays on the patient can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the spectrum treatment room.

[0017] Figure 2 It is a left view of the spectrum treatment room.

[0018] Figure 3 It is Figure 2 the sectional view of A-A.

[0019] Figure 4 It is Figure 3 the sectional view of B-B.

[0020] Figure 5 It is Figure 3 the sectional view of C-C.

[0021] Reference numerals: 1, room body; 11, treatment room; 2, seat; 21, backrest part; 211, third through hole; 22, seat surface part; 221, fourth through hole; 23, first bottom connecting part; 231, fifth through hole; 24, second bottom connecting part; 3, armrest assembly; 31, armrest body; 311, accommodating cavity; 312, first through hole; 313, second through hole; 32, spectrum generation inner plate; 33, reinforcing plate; 4, spectrum generation top plate; 5, first spectrum generation bottom plate; 6, second spectrum generation bottom plate; 7, spectrum generation main plate; 8, spectrum generation side plate; 9, room door; 10, observation window. DETAILED DESCRIPTION

[0022] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0023] In the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0025] As Figures 1 to 5The utility model discloses a spectrum treatment room, including room body 1, seat 2, two handrail subassembly 3, be equipped with treatment room 11 in room body 1, seat 2 with handrail subassembly 3 locate in treatment room 11, seat 2 from top to bottom are equipped with backrest part 21 and seat surface part 22 in proper order, two handrail subassembly 3 are located in seat 2 along the two sides of first direction, handrail subassembly 3 includes handrail body 31, spectrum generation inner plate 32, the top surface of handrail body 31 is higher than the top surface of seat surface part 22, and is lower than the bottom surface of backrest part 21, be equipped with containing cavity 311 in handrail body 31, the side of handrail body 31 is equipped with a plurality of first penetration through -hole 312 that passes to containing cavity 311 close to seat 2, the top surface of handrail body 31 is equipped with a plurality of second penetration through -hole 313 that passes to containing cavity 311, spectrum generation inner plate 32 is located in containing cavity 311, the infrared ray that spectrum generation inner plate 32 emits can pass through first penetration through -hole 312 and be irradiated to seat 2 place and pass through first penetration through -hole 312 and be irradiated to the upper of handrail body 31.

[0026] In the above technical solution, the patient can sit on the seat surface part 22 of the seat 2, then lean against the backrest part 21 of the seat 2, and then put both hands on the top surface of the handrail body 31 of the two side handrail subassemblies 3. The spectrum generation inner plate 32 is arranged in the containing cavity 311 of the handrail body 31. By adjusting the orientation or structure of the irradiation unit of the spectrum generation inner plate 32, the infrared rays emitted by the spectrum generation inner plate 32 can pass through the first penetration through-holes 312 arranged on the side surface of the handrail body 31 and be irradiated to the position below the top surface of the handrail body 31 of the seat 2, specifically, to the side surface of the waist and the parts below of the patient. Further, the infrared rays emitted by the spectrum generation inner plate 32 can also pass through the second penetration through-holes 313 arranged on the top surface of the handrail body 31 and be irradiated to the upper of the handrail body 31, specifically, to the bottom surface of the hands of the patient placed on the top surface of the handrail body 31. In summary, the spectrum treatment room can make the infrared rays emitted by the spectrum generation plate cover and irradiate the side surface below the top surface of the handrail body 31 of the patient and the bottom surface of the hands of the patient placed on the handrail body 31. The handrail body 31 has small blocking effect on the infrared rays, which can effectively improve the irradiation coverage of the infrared rays on the patient.

[0027] Further, the first penetration through-holes 312 are arranged in the vertical direction, and the first penetration through-holes 312 pass through the handrail body 31 in the second direction, so as to expand the hollow area of the side surface of the handrail body 31, and the spectrum generation inner plate 32 can emit infrared rays to more space.

[0028] Further, the handrail assembly 3 further comprises a plurality of reinforcing plates 33 arranged in the accommodating cavity 311, the reinforcing plates 33 are arranged in the vertical direction, and the reinforcing plates 33 are arranged in the second direction, the reinforcing plates 33 span the first penetrating through holes 312, and the side surfaces of the reinforcing plates 33 are connected to the cavity walls close to the first penetrating through holes 312, so as to enhance the strength of the side surfaces of the first penetrating through holes 312 of the handrail body 31, prevent the side surfaces from being deformed due to the excessively large hollowed-out area, and further affect the coverage of the infrared rays and the durability of the product.

[0029] Further, the second penetrating through holes 313 are long strip-shaped holes, and the second penetrating through holes 313 are arranged in a rectangular array in the first direction and the second direction, so as to increase the hollowed-out area of the top surface of the handrail body 31 through which the infrared rays can pass, and maintain a certain strength of the top surface of the handrail body 31.

[0030] Further, the treatment room 11 further comprises a spectrum generation top plate 4, a first spectrum generation bottom plate 5, two spectrum generation main plates 7, and two spectrum generation side plates 8, the backrest part 21 is provided with a plurality of third penetrating through holes 211 relative to the side surface in the second direction, the top surface of the seat surface part 22 is provided with a plurality of fourth penetrating through holes 221, the two spectrum generation main plates 7 are arranged on the two sides of the seat 2 in the second direction, respectively, and the spectrum generation main plates 7 are arranged towards the seat 2, the two spectrum generation side plates 8 are arranged on the two sides of the seat 2 in the first direction, respectively, and are arranged above the handrail body 31, the first spectrum generation bottom plate 5 is arranged upwards below the seat surface part 22, the spectrum generation top plate 4 is arranged downwards above the seat 2, wherein the spectrum generation top plate 4 can be installed on the top surface of the treatment room 11 to emit infrared rays from top to bottom to irradiate the upper surface of the patient, the first spectrum generation bottom plate 5 can be installed on the bottom surface of the treatment room 11 to emit infrared rays from bottom to top to irradiate the lower surface of the patient through the fourth penetrating through holes 221, the two spectrum generation side plates 8 can be installed on the two sides of the treatment room 11 relative to the first direction to respectively emit infrared rays from the two sides to irradiate the side surface of the patient, in particular, the side surface of the patient above the top surface of the handrail body 31, and the two spectrum generation main plates 7 can be installed on the two sides of the treatment room 11 relative to the first direction, one spectrum generation main plate 7 emits infrared rays to irradiate the front surface of the patient, and the other spectrum generation main plate 7 emits infrared rays to irradiate the back surface of the patient, and the infrared rays are directly irradiated to the back surface of the patient, and the other part of the infrared rays is irradiated to the back surface of the patient through the third penetrating through holes 211.

[0031] Further, the seat 2 is provided with a first bottom connecting part 23 located below the seat surface part 22, the first bottom connecting part 23 is provided with a plurality of fifth penetrating through holes 231 on the side surface relative to the second direction, and the second spectrum generating bottom plate 6 is arranged on the side of the first bottom connecting part 23 close to the backrest part 21, the infrared rays emitted by the second spectrum generating bottom plate 6 can pass through the fifth penetrating through holes 231 to irradiate the other side of the first bottom connecting part 23, wherein the top end and the bottom end of the first bottom connecting part 23 are connected to the bottom surface of the seat surface part 22 and the bottom surface of the treatment room 11 respectively, and the second spectrum generating bottom plate 6 is used to irradiate the back of the calf and the back of the thigh of the patient, and the first spectrum generating bottom plate 5 can be installed on the bottom surface of the seat surface part 22 to irradiate the buttocks and the back of the thigh of the patient.

[0032] Further, the seat 2 is provided with a second bottom connecting part 24 located on the two sides of the connecting part of the backrest part 21 and the seat surface part 22 along the second direction, the top end and the bottom end of the first bottom connecting part 23 are connected to the bottom surface of the seat surface part 22 and the bottom surface of the treatment room 11 respectively, and the top end and the bottom end of the second bottom connecting part 24 are connected to the bottom surface of the seat surface part 22 and the bottom surface of the treatment room 11 respectively, so that the seat 2 is stably installed in the treatment room 11.

[0033] Further, the house body 1 is provided with a door hole communicating with the treatment room 11 on the side surface relative to the second direction, the distance between the door hole and the seat surface part 22 is less than the distance between the door hole and the backrest part 21, and the door hole is provided with a house door 9 which can be opened and closed, so that the patient can face the seat 2 after opening the house door 9, thereby facilitating the patient to sit on the seat 2.

[0034] Further, the house door 9 is provided with an observation window 10, so that the staff can observe the situation inside through the observation window 10.

[0035] Further, the width of the treatment room 11 along the first direction is 600mm to 900mm, the width along the second direction is 800mm to 1200mm, and the height is 1500mm to 2000mm, the width of the handrail body 31 along the first direction is 100mm to 140mm, and the height is 600mm to 750mm, the height of the seat surface part 22 is 350mm to 400mm, the length of the seat surface part 22 protruding from the backrest part 21 along the second direction is 400mmn to 450mm, and the backrest part 21 is higher than the seat surface part 22 by 800mm to 900mm, so as to adapt to the body shape of most people and facilitate the use of the patient.

[0036] Further, the specific connection mode of the fixed setting and fixed connection refers to the relative position relationship of the two components that can be fixed and connected, including fixing through a connecting piece, fixing through welding, fixing through an adhesive, fixing through one-piece forming, fixing through a buckle connection.

[0037] Further, the connecting piece includes a fastener, a strap, a binding rope, a pneumatic connecting element, a hydraulic connecting element, a flange plate, a magic tape, and a button.

[0038] Further, the spectrum generation inner plate 32, the spectrum generation top plate 4, the first spectrum generation bottom plate 5, the second spectrum generation bottom plate 6, the spectrum generation main plate 7, and the spectrum generation side plate 8 of the present application can radiate infrared rays through a mica heating process, specifically, the aforementioned components can be manufactured through the patent technologies of a spectrum generator and a preparation method thereof and a preparation method of a far infrared radiation coating disclosed in CN102031051B and a water-based epoxy curing agent and a water-based epoxy film-forming agent and a preparation method thereof disclosed in CN101613460A.

[0039] In summary, the spectrum therapy room provided in the embodiments of the present application has the following technical effects:

[0040] In the spectrum therapy room of the present application, the seat 2 and the armrest assembly 3 are arranged in the treatment room 11 of the room body 1, a patient can sit on the seat surface part 22 of the seat 2 and then lean against the backrest part 21 of the seat 2, and then the hands are placed on the top surface of the armrest body 31 of the armrest assembly 3 on both sides, wherein the spectrum generation inner plate 32 is arranged in the accommodating cavity 311 of the armrest body 31, the orientation or structure of the irradiation unit of the spectrum generation inner plate 32 is adjusted, the infrared rays emitted by the spectrum generation inner plate 32 pass through the first penetrating through hole 312 arranged on the side surface of the armrest body 31, and are irradiated to the position below the top surface of the armrest body 31 of the seat 2, specifically, to the side surface of the waist and the position below of the patient, further, the infrared rays emitted by the spectrum generation inner plate 32 also pass through the second penetrating through hole 313 arranged on the top surface of the armrest body 31, and are irradiated to the upper side of the armrest body 31, specifically, to the bottom surface of the hands of the patient placed on the top surface of the armrest body 31; in summary, the spectrum therapy room of the present application can make the infrared rays emitted by the spectrum generation plate cover and irradiate the side surface of the patient below the top surface of the armrest body 31 and can irradiate the bottom surface of the hands of the patient placed on the armrest body 31, the armrest body 31 has a small blocking effect on the infrared rays, and the irradiation coverage of the infrared rays on the patient can be effectively improved.

[0041] The above only describes the preferred embodiments of the present application, and it should be noted that, for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A spectrum therapy room, characterized in that, The utility model provides a kind of chair, including house (1), seat (2), two handrail assemblies (3), the house (1) is equipped with treatment room (11) in, the seat (2) and the handrail assembly (3) are equipped in the treatment room (11), the seat (2) is sequentially equipped with backrest (21) and seat surface portion (22) from top to bottom, two the handrail assembly (3) is respectively equipped in the seat (2) along the two sides of first direction, the handrail assembly (3) includes handrail body (31), spectrum generation inner plate (32), the top surface of handrail body (31) is higher than the top surface of seat surface portion (22), and lower than the bottom of backrest (21), the handrail body (31) is equipped with containing cavity (311) in, the side of handrail body (31) close to seat (2) is equipped with multiple first penetration through hole (312) that passes to containing cavity (311), the top surface of handrail body (31) is equipped with multiple second penetration through hole (313) that passes to containing cavity (311), spectrum generation inner plate (32) is equipped in containing cavity (311), infrared ray that spectrum generation inner plate (32) emits can pass through first penetration through hole (312) and be irradiated to seat (2) and pass through first penetration through hole (312) and be irradiated to the upper of handrail body (31).

2. The spectrum therapy room of claim 1, wherein, Multiple first penetration through hole (312) is spaced apart along vertical direction, and first penetration through hole (312) penetrates handrail body (31) along second direction.

3. The spectrum therapy room of claim 2, wherein, The handrail assembly (3) further includes multiple reinforcing plates (33) arranged in the containing cavity (311), the reinforcing plates (33) are arranged along the vertical direction, and multiple reinforcing plates (33) are arranged along the second direction, the reinforcing plates (33) span each first penetration through hole (312), and the side of the reinforcing plates (33) is connected to the cavity wall close to the first penetration through hole (312).

4. The spectrum therapy room of claim 1, wherein, The second penetration through hole (313) is a long strip-shaped hole, and multiple second penetration through holes (313) are arranged in a rectangular array along the first direction and the second direction.

5. The spectrum therapy room of claim 1, wherein, Further comprising spectrum generation top plate (4), first spectrum generation bottom plate (5), two spectrum generation main plates (7) and two spectrum generation side plates (8) arranged in the treatment room (11), the side of the backrest (21) relative to the second direction is provided with a plurality of third penetration through holes (211), the top surface of the seat surface portion (22) is provided with a plurality of fourth penetration through holes (221), two spectrum generation main plates (7) are arranged on the two sides of the seat (2) along the second direction, the spectrum generation main plates (7) are arranged towards the seat (2), two spectrum generation side plates (8) are arranged on the two sides of the seat (2) along the first direction and above the handrail body (31), the first spectrum generation bottom plate (5) is arranged below the seat surface portion (22) upwards, and the spectrum generation top plate (4) is arranged above the seat (2) downwards.

6. The spectrum therapy room of claim 1, wherein, The seat (2) is provided with a first bottom connecting part (23) below the seat surface part (22), the first bottom connecting part (23) is provided with a plurality of fifth penetrating holes (231) on the side relative to the second direction, and the second frequency spectrum generating bottom plate (6) is arranged on the side of the first bottom connecting part (23) close to the backrest part (21), and the infrared rays emitted by the second frequency spectrum generating bottom plate (6) can pass through the fifth penetrating holes (231) to irradiate the other side of the first bottom connecting part (23).

7. The spectrum therapy room of claim 6, wherein, The seat (2) is provided with a second bottom connecting part (24), the first bottom connecting part (23) and the second bottom connecting part (24) are respectively arranged on the two sides of the connection part of the backrest part (21) and the seat surface part (22) along the second direction, the top end and the bottom end of the first bottom connecting part (23) are respectively connected to the bottom surface of the seat surface part (22) and the bottom surface of the treatment room (11), and the top end and the bottom end of the second bottom connecting part (24) are respectively connected to the bottom surface of the seat surface part (22) and the bottom surface of the treatment room (11).

8. The spectrum therapy room of claim 1, wherein, The house body (1) is provided with a door hole communicating with the treatment room (11) on the side relative to the second direction, the distance between the door hole and the seat surface part (22) is less than the distance between the door hole and the backrest part (21), and the door hole is provided with a house door (9) which can be opened and closed.

9. The spectrum therapy room of claim 8, wherein, The house door (9) is provided with an observation window (10).

10. The spectrum therapy room of claim 1, wherein, The width of the treatment room (11) along the first direction is 600mm to 900mm, the width along the second direction is 800mm to 1200mm, the height is 1500mm to 2000mm, the width of the handrail body (31) along the first direction is 100mm to 140mm, the height is 600mm to 750mm, the height of the seat surface part (22) is 350mm to 400mm, the length of the seat surface part (22) protruding from the backrest part (21) along the second direction is 400mmn to 450mm, and the backrest part (21) is higher than the seat surface part (22) by 800mm to 900mm.

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