EP3681172A1 - Akustische vorrichtung - Google Patents

Akustische vorrichtung Download PDF

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Publication number
EP3681172A1
EP3681172A1 EP18850557.2A EP18850557A EP3681172A1 EP 3681172 A1 EP3681172 A1 EP 3681172A1 EP 18850557 A EP18850557 A EP 18850557A EP 3681172 A1 EP3681172 A1 EP 3681172A1
Authority
EP
European Patent Office
Prior art keywords
operation button
sound
housing
space
gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18850557.2A
Other languages
English (en)
French (fr)
Other versions
EP3681172A4 (de
Inventor
Hiroshi Yokota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP3681172A1 publication Critical patent/EP3681172A1/de
Publication of EP3681172A4 publication Critical patent/EP3681172A4/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/36—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means by using a single aperture of dimensions not greater than the shortest operating wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/021—Transducers or their casings adapted for mounting in or to a wall or ceiling

Definitions

  • the present disclosure relates generally to acoustic apparatuses, and specifically, to an acoustic apparatus including a housing in which a sound outputter is provided.
  • Patent Literature 1 discloses a conventional acoustic apparatus.
  • the warning device described in Patent Literature 1 includes a body, a cover to be attached to a front side of the body, and a back cover to be attached to a back side of the body.
  • the body is provided with a piezoelectric loudspeaker.
  • the cover has a large number of tone holes formed therein.
  • Patent Literature 1 JP 2011-205613 A
  • An acoustic apparatus of one aspect according to the present disclosure includes: a housing having a housing space; an operation button opening communicated with the housing space and formed in the housing; an operation button disposed on an inner side of the operation button opening; a gap corresponding to at least part of a space between an edge of the operation button opening and the operation button; and a sound outputter provided in the housing space and configured to output a sound.
  • the sound outputter is disposed at a location where at least part of the sound outputter overlaps the operation button.
  • An acoustic apparatus of the present embodiment is an alarm 1 which is configured such that when the alarm 1 senses smoke caused by a fire or the like, the alarm 1 illuminates a path or the like, and in addition, outputs a sound such as a warning sound.
  • the alarm 1 is attached to, for example, a ceiling surface or the like of a living room , a bedroom, a stairs, or a corridor in a dwelling house, or an office, a stairs, a corridor, or the like in a building other than the dwelling house.
  • the alarm 1 includes an operation button 6 provided on a surface of a housing 2.
  • the operation button 6 When the operation button 6 is pushed toward an inner side of the housing 2 while the alarm 1 is outputting a sound, the alarm 1 stops outputting the sound.
  • the surface provided with the operation button 6 is defined as a front surface, and a surface facing the ceiling surface is defined as a back surface.
  • a direction parallel to a direction from the back surface to the front surface of the alarm 1 is defined as a forward and rearward direction. Viewing an object from the front is defined as a "front view" of the object.
  • the alarm 1 includes an attachment, the housing 2, a circuit board 72, a sensor 74, an illuminator 8, a sound outputter 70, the operation button 6, and a battery 71.
  • the housing 2 accommodates components such as the circuit board 72, the sensor 74, the illuminator 8, the sound outputter 70, and the battery 71 therein.
  • the housing 2 has a housing space 22.
  • the housing 2 includes a bottom plate 3, a side cover 4, and a top plate 5.
  • the housing 2 is made of a synthetic resin, for example, a flame-retardant ABS resin.
  • the housing space 22 is a space in which the components are to be accommodated.
  • the housing space 22 is surrounded by the bottom plate 3, the side cover 4, and the top plate 5.
  • the housing space 22 of the present embodiment has a first space and a second space.
  • the second space is a space surrounded by the bottom plate 3, the outer periphery 41, and the partition 45. In the second space, the sensor 74 is disposed.
  • the sensor 74 is configured to sense the presence of smoke.
  • the sensor 74 is provided on a back surface of the circuit board 72.
  • the partition 45 has a through hole 46 formed at a location corresponding to the sensor 74.
  • the sensor 74 passes through the through hole 46, thereby being disposed in the second space. That is, the sensor 74 is exposed in the second space.
  • the sensor 74 includes, for example, a photoelectric sensor.
  • the photoelectric sensor includes a light-emitting element and a light-receiving element.
  • the light-emitting element outputs light with smoke being present in the second space, the light is irregularly reflected off the smoke.
  • the light-receiving element senses the light irregularly reflected.
  • the control circuit senses the presence of the smoke.
  • the control circuit senses the presence of the smoke based on a signal output from the sensor 74, the control circuit outputs an electric signal to the sound outputter 70 so as to cause the sound outputter 70 to operate.
  • the operation button 6 receives an operation from outside the alarm 1 to be able to switch functions.
  • the operation button 6 of the present embodiment When the operation button 6 of the present embodiment is operated in a state where the sound outputter 70 is outputting a sound, the operation button 6 switches the state to a state where the sound outputter 70 is not outputting the sound.
  • the operation button 6 is provided in the opening 51 formed in a front surface of the top plate 5.
  • the peripheral wall section 511 has a cylindrical shape whose center axis is elongated in the forward and rearward direction.
  • the peripheral wall section 511 has surfaces on both sides in a thickness direction thereof, and one of the surfaces which faces the center axis is an inner peripheral surface of the opening 51.
  • An edge line at which a front end of the inner peripheral surface intersects with the front surface of the top plate 5 forms an opening in the top plate 5.
  • the opening is referred to as an operation button opening 513.
  • the peripheral wall section 511 does not have to have a cylindrical shape but may have a rectangular tubular shape.
  • the operation button 6 is attached to the partition 512.
  • the partition 512 includes a pair of shaft bodies 631 which will be described later and a pore (second pore 53) which supports a restriction claw 65.
  • the pair of shaft bodies 631 are configured to support a pair of hook pieces 641.
  • the partition 512 supports the operation button 6 in a state where the operation button 6 is attached to the partition 512.
  • the partition 512 is provided at a rear end of the peripheral wall section 511.
  • the partition 512 has a plate shape orthogonal to the forward and rearward direction.
  • the partition 512 has a front surface corresponding to a bottom surface of the opening 51.
  • the partition 512 is located between the operation button 6 and the sound outputter 70 when the top plate 5 is fixed to the side cover 4.
  • the partition 512 includes a first pore 52 and a second pore 53.
  • a straight line passing through the center of the operation button 6 is defined as a first virtual straight line 100
  • a straight line passing through the center of the operation button 6 and orthogonal to the first virtual straight line 100 is defined as a second virtual straight line 200.
  • the first pore 52 is part of an acoustic space 520 which will be described later.
  • the first pore 52 is formed on the second virtual straight line 200 and along an outer edge of the partition 512.
  • the second pore 53 is located on an opposite side of the first virtual straight line 100 from the first pore 52 and is on the second virtual straight line 200. That is, the second pore 53 is provided on an opposite side from the first pore 52 in the radial direction of the opening 51.
  • the first pore 52 and the second pore 53 penetrate through the partition 512.
  • the operation button opening 513 is communicated with the housing space 22 via the first pore 52 and the second pore 53.
  • the first pore 52 and the second pore 53 will be described later in detail.
  • the operation piece 54 is provided to the partition 512.
  • the operation piece 54 is a piece obtained by separating part of the partition 512 from the other portions by a slit having a U-shape in a front view and is configured to elasticity deform when pushed in the rearward direction.
  • the operation piece 54 includes an elasticity piece 541 which is elastically deformable and an operation projection 542 facing an operation surface of the push button switch 73.
  • the operation button 6 includes a button body 61 included in a main body of the operation button 6 and a pressure projection 62 protruding in the rearward direction from a back surface of the button body 61.
  • the pressure projection 62 has a tip end disposed to face a portion of the elasticity piece 541, the portion being located between the operation projection 542 and a base of the elasticity piece 541.
  • the operation button 6 is disposed on an inner side of the operation button opening 513.
  • the operation button 6 is disposed on an inner side of the operation button opening 513 includes not only that the front surface of the operation button 6 is flush with the front surface of the top plate 5 but also that the operation button 6 is located rearward or forward with respect to the front surface of the top plate 5. That is, the operation button 6 is, in a front view thereof, disposed at least on the inner side of the operation button opening 513. In other words, at least part of the operation button 6 is disposed in the operation button opening 513.
  • the housing 2 has a single-sided hinge structure for rotatably attaching the operation button 6 to the top plate 5.
  • the single-sided hinge structure includes the pair of shaft bodies 631 provided to the housing 2 and a bearing 64 provided to the button body 61.
  • the pair of shaft bodies 631 extend in a direction orthogonal to the second virtual straight line 200 in the front view of the operation button 6, and the pair of shaft bodies 631 are apart from each other with the second virtual straight line 200 at the center.
  • Each shaft body 631 has a cylindrical shape.
  • the first pore 52 has a line symmetric shape with respect to the second virtual straight line 200.
  • the pair of shaft bodies 631 protrude from a pair of surfaces in a direction in which the pair of shaft bodies 631 face each other, the pair of surfaces being included in an inner peripheral surface of the first pore 52 and facing each other in a direction along the first virtual straight line 100.
  • a straight line connecting the centers of the pair of shaft bodies 631 is a rotation axis 63 of the operation button 6.
  • the bearing 64 protrudes from the back surface of the button body 61.
  • the bearing 64 includes a pair of hook pieces 641 each having an L-section.
  • the pair of hook pieces 641 are disposed to be apart from each other in the direction along the first virtual straight line 100.
  • the pair of hook pieces 641 are hooked on the pair of shaft bodies 631 on a one-to-one basis.
  • the operation button 6 rotates about the rotation axis 63 when the front surface of the operation button 6 is pushed toward the housing 2.
  • the operation button 6 includes the restriction claw 65.
  • the restriction claw 65 restricts displacement in a direction opposite from a rotation direction (specifically, a push direction of rotation directions about the rotation axis 63) when the front surface of the operation button 6 is pushed toward the housing 2.
  • a rotation direction specifically, a push direction of rotation directions about the rotation axis 63
  • the operation button 6 is restricted from rotating in a direction which is one of rotation directions about the rotation axis 63 and which is opposite from the push direction.
  • the single-sided hinge structure does not have to include the pair of shaft bodies 631 but has at least a portion serving as the rotation axis 63.
  • the single-sided hinge structure of the present embodiment is made of a synthetic resin but may be made of other materials by two-color molding, insert molding, or the like.
  • the alarm 1 includes the illuminator 8.
  • the illuminator 8 emits light such that as the light propagates in the traveling direction, the light diffuses in the radial direction.
  • the light is emitted from the illuminator 8 in a conical shape viewed as a whole.
  • the illuminator 8 includes the light source 80 and an optical member 9.
  • the light source 80 includes light-emitting diodes (LEDs) attached to the circuit board 72. That is, the light source 80 is provided in the housing 2.
  • the color of light output from the light source 80 is white but may be red, blue, or the like.
  • the optical member 9 is on an optical axis of the light source 80 in the housing 2 (in the first space).
  • the optical member 9 is made of a transparent material such as acrylic, glass, or the like.
  • the optical member 9 includes: a focusing lens 91 having a first incidence plane 911; an adjacent part 92 having a second incidence plane 921; a light guide 93 having a first exit plane 94 and a second exit plane 95; and a pair of support legs 96.
  • the focusing lens 91 collects light emitted from the light source 80.
  • the focusing lens 91 includes an incidence plane (first incidence plane 911) via which light output from the light source 80 enters the focusing lens 91.
  • the first incidence plane 911 has a convex lens shape and is spherically curved to protrude toward the light source 80.
  • the light guide 93 guides the light collected by the focusing lens 91 to the first exit plane 94.
  • the light guide 93 is integrally formed with the focusing lens 91.
  • the light guide 93 extends in the forward and rearward direction.
  • the light guide 93 has a pair of inclined surfaces 931.
  • the pair of inclined surfaces 931 face each other in a width direction of the first exit plane 94.
  • the pair of inclined surfaces 931 are tilted such that the distance between the pair of inclined surfaces 931 decreases toward the front.
  • the light guide 93 has an end surface in the forward direction, and the end surface is the first exit plane 94.
  • the first exit plane 94 is a surface from which light passing through the first incidence plane 911 is output outside the housing 2. As illustrated in FIG. 6A , the first exit plane 94 is disposed in a hole section 66.
  • the hole section 66 is recessed from the surface of the housing 2. As illustrated in FIG. 6C , the hole section 66 includes a pair of inner side surfaces 661 and a bottom surface 662. The pair of inner side surfaces 661 are apart from each other in a radial direction of the opening 51. The bottom surface 662 is located on a rear side of the pair of inner side surfaces 661. In the present embodiment, one of the pair of inner side surfaces 661 is the inner peripheral surface of the opening 51 of the top plate 5, and the other is the outer periphery of the operation button 6. The bottom surface 662 is part of the front surface of the partition 512.
  • the hole section 66 is, in a front view thereof, formed concentrically with the housing 2 and extends along a surface of the housing 2.
  • the area S 1 of the first incidence plane 911 is larger than the area S2 of the first exit plane 94, a larger quantity of light can be secured than in a case where the area of the incidence plane is equal to the area of the exit plane.
  • the area of first incidence plane 911 is maintained to be larger than or equal to a certain area so as to secure the quantity of light, it is possible to make the first exit plane 94 in the housing 2 less noticeable.
  • the incidence plane (first incidence plane 911) may be flat.
  • the focusing lens 91 may be a convex lens in which the incidence plane of the focusing lens 91 is flat, and a plane from which light passing through the focusing lens 91 is output spherically protrudes in a travelling direction of the light.
  • the optical member 9 does not include the focusing lens 91 and may include only the light guiding member.
  • the loudspeaker 700 overlaps the rotation axis 63 in the front view of the operation button 6, and the center 703 of the loudspeaker 700 is located between the first virtual straight line 100 and the rotation axis 63 in a direction along the second virtual straight line 200.
  • the loudspeaker 700 at least partially overlaps the operation button 6 in the front view of the operation button 6.
  • the loudspeaker 700 is disposed behind the partition 512.
  • a space having a dimension greater than or equal to the thickness of the partition 512 is formed in front of the loudspeaker 700.
  • the space forms the acoustic space 520.
  • the alarm 1 includes a gap 21 between an edge of the opening 51 of the top plate 5 and the operation button 6.
  • the gap 21 extends over the entire length of the outer perimeter of the operation button 6.
  • the acoustic space 520 overlaps at least part of the gap 21 in the entire length of the gap 21 in a plan view of the operation button 6.
  • the acoustic space 520 connects the loudspeaker 700 to the gap 21.
  • the sound shielding structure 57 suppresses a sound output to the acoustic space 520 from going out through part, other than a range corresponding to the first pore 52 and the first recess 55, of the gap 21.
  • the sound of the alarm 1 of the present embodiment is mainly output through the gap 21 corresponding to the first pore 52 and the first recess 55. This reduces clipping noise caused due to sounds which have the same frequency but which are output from locations apart from each other.
  • the loudspeaker 700 of the present embodiment is configured to output two or more types of sounds (sound waves).
  • the loudspeaker 700 is configured to output a first sound which can be output from a first portion 701 of the loudspeaker 700 and a second sound which can be output from a second portion 702 of the loudspeaker 700 as the two or more types of sounds.
  • the alarm 1 of the present embodiment outputs, from the front surface (first portion 701) of the diaphragm of the loudspeaker 700, a warning sound as the first sound. Then, the alarm 1 outputs, from the front surface of the diaphragm of the loudspeaker 700, voice as the first sound. These first sounds pass through the acoustic space 520 and are output through the gap 21 to the outside.
  • This configuration enables a sound output from the sound outputter (70) to be output through the gap (21) between the edge of the operation button opening (513) and the operation button (6), and therefore, a dedicated tone hole does not have to be provided, and it is thus possible to improve the degree of design freedom of the housing.
  • the sound outputter (70) is disposed at a location such that the sound outputter (70) overlaps the rotation axis (63) in the front view of the operation button (6).
  • This configuration enables a sound with improved sound effect to be output.
  • This configuration enables a sound to be output through a gap having a range larger than the width of the acoustic space (520) even when the acoustic space (520) has a narrow width.
  • This configuration enables the range in which the sound is output to be limited to the certain range even when the range of the gap (21) is wide. Therefore, it is possible to reduce clipping noise which is caused due to a difference caused in traveling distance.
  • the operation button (6) is larger than the sound outputter (70) in the front view of the operation button (6).

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
EP18850557.2A 2017-09-04 2018-08-22 Akustische vorrichtung Pending EP3681172A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017169880A JP7038317B2 (ja) 2017-09-04 2017-09-04 音響装置
PCT/JP2018/030928 WO2019044606A1 (ja) 2017-09-04 2018-08-22 音響装置

Publications (2)

Publication Number Publication Date
EP3681172A1 true EP3681172A1 (de) 2020-07-15
EP3681172A4 EP3681172A4 (de) 2020-10-28

Family

ID=65526175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18850557.2A Pending EP3681172A4 (de) 2017-09-04 2018-08-22 Akustische vorrichtung

Country Status (3)

Country Link
EP (1) EP3681172A4 (de)
JP (1) JP7038317B2 (de)
WO (1) WO2019044606A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102195498B1 (ko) * 2019-04-01 2020-12-28 주식회사 뮤즈라이브 초음파를 이용한 인증 정보 전송 장치
KR102385861B1 (ko) * 2020-09-03 2022-04-12 주식회사 뮤즈라이브 인증 정보 전송 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4685823B2 (ja) * 2007-03-30 2011-05-18 能美防災株式会社 インターホン
JP4901572B2 (ja) * 2007-04-27 2012-03-21 Ｄｘアンテナ株式会社 電子機器における押しボタン構造
JP5576776B2 (ja) 2010-03-01 2014-08-20 パナソニック株式会社 圧電スピーカおよびこの圧電スピーカを用いた警報装置
JP2011186844A (ja) * 2010-03-09 2011-09-22 Panasonic Electric Works Co Ltd 警報装置

Also Published As

Publication number Publication date
EP3681172A4 (de) 2020-10-28
WO2019044606A1 (ja) 2019-03-07
JP2019046270A (ja) 2019-03-22
JP7038317B2 (ja) 2022-03-18

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