WO2018225354A1 - Dispositif acoustique - Google Patents

Dispositif acoustique Download PDF

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Publication number
WO2018225354A1
WO2018225354A1 PCT/JP2018/013516 JP2018013516W WO2018225354A1 WO 2018225354 A1 WO2018225354 A1 WO 2018225354A1 JP 2018013516 W JP2018013516 W JP 2018013516W WO 2018225354 A1 WO2018225354 A1 WO 2018225354A1
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WO
WIPO (PCT)
Prior art keywords
ear
acoustic
unit
acoustic device
skin contact
Prior art date
Application number
PCT/JP2018/013516
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English (en)
Japanese (ja)
Inventor
潤 勝沼
大介 佐川
Original Assignee
株式会社発明屋
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 株式会社発明屋 filed Critical 株式会社発明屋
Priority to JP2018519878A priority Critical patent/JP6454934B1/ja
Publication of WO2018225354A1 publication Critical patent/WO2018225354A1/fr

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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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones

Definitions

  • the present disclosure relates to an acoustic device that is used by being worn on an ear.
  • Earphones have been commercialized as acoustic devices that are worn on the ear. Earphones are roughly classified into inner-ear earphones (also called intra-concha earphones, open-air earphones, etc.) and canal-type (earplug type) earphones.
  • inner-ear earphones also called intra-concha earphones, open-air earphones, etc.
  • canal-type earplug type
  • the inner-ear earphone 91 is configured by fitting a housing 912 containing an electroacoustic transducer 911 into a hollow portion (concha conchaumum) 83 surrounded by a tragus 81 and an antitragus 82. use.
  • the canal-type earphone 95 includes a housing 952 including an electroacoustic transducer 951, a sound conduit 953 protruding from the housing 952, and an earpiece 954 attached around the sound conduit 953. ing.
  • the canal-type earphone 95 is used by inserting an earpiece 954 into the ear canal 84.
  • the housing 952 is fitted into the concha cavity 83.
  • Earphones with a structure in which the hard housing comes into contact with the ears tend to hurt the part in contact with the housing when used for a long time. This problem is common to both the inner ear type earphone 91 and the canal type earphone 95. Since the canal type earphone 95 seals the external auditory canal 84 with the earpiece 954, the wearing feeling is not good.
  • the acoustic device is an acoustic device that is used by being worn on an ear.
  • the acoustic device includes a pair of spherical ear attachments that are respectively attached to the left and right ears, and a string-like body that connects the both ear attachments to each other.
  • the string-like body extends from the surface of the ear mounting body.
  • the ear wearing body includes an acoustic unit, a skin contact member, and an interposition member.
  • the sound unit has a sound emitting part and a side part covered with the skin contact member.
  • the skin contact member is a member having flexibility, elasticity, and air permeability and transmitting sound.
  • the interposed member exists between the skin contact member and the acoustic unit, and forms an air chamber between the skin contact member and the acoustic unit.
  • the acoustic unit is supported away from the inner wall of the ear canal.
  • Front view of the acoustic device of the first embodiment Sectional drawing of the ear
  • Front view of acoustic device of third embodiment The figure which shows the state which attached the earbud earphone to the ear The figure which shows the state which put on the ear the canal type earphone
  • FIG. 1 to FIG. 4 show an embodiment of an earphone included in the category of an acoustic device that is worn on the ear 84 and used.
  • the earphone 1 ⁇ / b> A of the first embodiment is a string that connects a pair of spherical ear mounting bodies 10 ⁇ / b> A and 10 ⁇ / b> B that are respectively mounted on the left and right ears 84, and the both ear mounting bodies 10 ⁇ / b> A and 10 ⁇ / b> B.
  • spherical means a spherical shape in a natural state.
  • Spherical shape means a substantially spherical shape.
  • the substantially spherical shape includes a shape in which most of the surface is a spherical surface and the remaining part is an aspherical surface or a spherical surface having a curvature different from that of the most spherical surface.
  • Spherical surface means to include a spherical surface having minute holes and irregularities caused by the material.
  • Natural state means a state in which no external pressure is applied (for example, an unused state, a non-wearing state, etc.) or a state in which sufficient time has passed since the external pressure was released.
  • the string-like body 20 extends from the spherical surface S of the binaural mounting bodies 10A and 10B.
  • “extending from a spherical surface” means extending directly from the spherical surface, in other words, extending without an obvious protrusion.
  • Examples of obvious protrusions include sleeves, casing protrusions, and the like.
  • the string-like body 20 is a cord having a conductive wire 201 (see FIG. 2).
  • a controller 30 is provided at an intermediate portion of the string-like body 20.
  • the controller 30 includes a battery 31 and a wireless module 32.
  • the controller 30 is a flat, substantially rectangular parallelepiped member.
  • the controller 30 arranges the central portion of the string-like body 20 in the longitudinal direction behind the base of the user's neck, and attaches both ear mounting bodies 10A and 10B to the right and left ears 84 (see FIG. 4) of the user. In this state, it is provided at a position offset from the longitudinal center of the string-like body 20 so that it can be placed on one shoulder of the user. That is, in this example, the string-like body 20 includes a short portion 20A that connects one ear mounting body 10A and the housing body 30, and a long portion 20B that connects the other ear mounting body 10B and the housing body 30. Become.
  • the configuration of the binaural mounting bodies 10A and 10B is common to each other.
  • the ear wearing body 10 will be described without distinguishing the both ear wearing bodies 10A and 10B.
  • the ear wearing body 10 includes an acoustic unit 11, a cap 12 as a skin contact member, and a baffle tube 13 as an interposition member.
  • the acoustic unit 11 includes a unit casing 111 as a second enclosure and a driver unit 112.
  • the unit casing 111 is an integrally formed product formed by drawing an aluminum plate.
  • the unit casing 111 has a front part 111f and a rear part 111r.
  • the front part 111f has a hemispherical shell structure opened forward (in the direction of insertion into the external auditory canal 84).
  • the rear portion 111r has a hemispherical shell structure that opens rearward (opposite to the direction of insertion into the ear canal 84).
  • the front part 111f and the rear part 111r are coaxially connected via an intermediate part (constricted part) 111m.
  • the outer diameter of the front part 111f is larger than the outer diameter of the rear part 111r.
  • a protector 113 is attached to the front end (illustration left end) 111a of the front portion 111f.
  • the protector 113 is a hemispherical shell member that is substantially symmetrical with the front portion 111f.
  • the protector 113 and the front part 111f are combined to form a spherical shell.
  • the protector 113 is a mesh-shaped metal member.
  • the protector 113 transmits sound satisfactorily.
  • the protector 113 forms the sound emitting unit 11 a of the acoustic unit 11.
  • a fitting portion 111b into which the driver unit 112 is fitted is provided on the inner periphery on the front end side of the front portion 111f.
  • the driver unit 112 includes an electroacoustic conversion element 1121 and a driver casing 1122 as a first enclosure.
  • a diaphragm 1121a is provided at the tip (left end in the figure) of the electroacoustic transducer 1121.
  • An electromechanical coupling system 1121b that converts an input electric signal into vibration of the diaphragm 1121a is provided behind the diaphragm 1121a (right side in the drawing).
  • the electromechanical coupling system 1121b includes a voice coil, a magnet, and the like.
  • the vibration of the diaphragm 1121a is released as air vibration, that is, sound.
  • the diaphragm 1121a forms a sound emitting part of the driver unit 112.
  • the electroacoustic transducer 1121 is housed in the driver casing 1122.
  • the driver casing 1122 includes a cylindrical portion 1122a and an end plate portion 1122b.
  • the cylindrical portion 1122a surrounds the electroacoustic transducer 1121.
  • the diaphragm 1121a of the electroacoustic transducer 1121 is exposed from the front end (the left end in the drawing) of the cylindrical portion 1122a.
  • the drive shaft of the electromechanical coupling system 1121b is arranged coaxially with the central axis of the cylindrical portion 1122a.
  • the rear end of the cylindrical portion 1122a is closed with an end plate portion 1122b.
  • the end plate portion 1122b is provided with a through hole (not shown) into which a pair of terminals (not shown) of the electroacoustic transducer 1121 is inserted.
  • a pair of terminals (not shown) of the electroacoustic transducer 1121 penetrates through holes (not shown). Accordingly, a pair of terminals (not shown) of the electroacoustic transducer 1121 are arranged at the base end (right end in the drawing) of the driver casing 1122.
  • One end of the conducting wire 201 of the string-like body 20 is connected to the tip of the terminal (not shown) by soldering 202.
  • the driver casing 1122 forms the first resonance chamber 41 together with the diaphragm 1121a of the electroacoustic transducer 1121.
  • the end plate portion 1122b is provided with a port (vent hole) 1122c.
  • the port 1122c opens to the inner surface and the outer surface of the end plate portion 1122b.
  • the driver casing 1122 is stably held in the front portion 111f by fitting the cylindrical portion 1122a to the fitting portion 111b of the front portion 111f.
  • the cylindrical portion 1122a of the driver casing 1122 and the peripheral edge portion of the rear end are in contact with the inner wall of the front portion 111f over the entire circumference.
  • the second resonance chamber 42 is formed between the front portion 111f and the end plate portion 1122b.
  • the second resonance chamber 42 communicates with the first resonance chamber 41 via the port 1122c.
  • a circular lid 114 is attached to the rear end (right end in the figure) 111c of the rear portion 111r.
  • the outer surface Sc of the lid 114 forms a part of the spherical surface S of the ear wearing body 10.
  • the outer surface Sc of the lid 114 is a partial spherical surface having the same curvature as the surface Sa of the cap 12 in the natural state.
  • the lid 114 and the rear portion 111r are firmly and airtightly fixed to each other.
  • the lid 114 is made of metal or plastic.
  • a through hole 114 a is provided at the center of the lid 114.
  • the end of the string-like body 20 is inserted into the through hole 114a.
  • the lid 114 and the string-like body 20 are firmly and airtightly fixed to each other.
  • the internal space of the rear part 111r forms a third resonance chamber 43.
  • the third resonance chamber 43 communicates with the second resonance chamber 42 via the internal space 44 of the intermediate portion 111m. That is, the communication portion (internal space 44) between the second resonance chamber 42 and the third resonance chamber 43 is constricted.
  • the cap 12 is a substantially spherical member.
  • the outer surface Sa of the cap 12 occupies most of the surface S of the ear mounting body 10, and the cap 12 is formed of a sponge material.
  • the sponge material used for the cap 12 has an open cell structure with high air permeability.
  • a typical example is a highly foamed and highly breathable urethane foam.
  • the cap 12 has flexibility, elasticity, and breathability.
  • the cap 12 is a member that transmits sound.
  • the cap 12 can function as an analog filter that removes annoying high-frequency sound.
  • the cap 12 covers the acoustic unit 11 to which the baffle tube 13 and the protector 113 are attached.
  • a substantially spherical shape is formed except for the central portion of the lid 114.
  • the sound emitting part 11 a and the side part 11 s of the acoustic unit 11 are covered with a cap 12.
  • the cap 12 supports the acoustic unit 11 away from the inner wall 86 of the ear canal 84 (see FIG. 4).
  • the baffle tube 13 exists between the acoustic unit 11 and the cap 12.
  • the baffle tube 13 is mounted (exterior) on the acoustic unit 11.
  • the baffle tube 13 forms an air chamber 50 between the acoustic unit 11 and the baffle tube 13.
  • the baffle tube 13 is a flexible annular member that is in contact with the outer peripheral surface 11b of the acoustic unit 11 (in this example, the outer peripheral surfaces of the rear portion 111r and the intermediate portion 111m) over the entire periphery.
  • the air chamber 50 is defined by the outer peripheral surface 11 b of the acoustic unit 11 (in this example, the outer peripheral surface of the front portion 111 f) and the inner peripheral surface 13 d of the baffle tube 13.
  • the baffle tube 13 extends from the outermost diameter portion of the rear portion 111r to the intermediate portion of the protector 113.
  • the outer surface Sb of the end portion 13 b on the rear portion 111 r side of the baffle tube 13 is not covered with the cap 12.
  • the outer surface Sb forms a part of the spherical surface S of the ear wearing body 10.
  • the outer surface Sb is a partial spherical surface having the same curvature as the outer surface Sa of the cap 12 in a natural state.
  • the tip part (the left end part in the figure) 13a of the baffle tube 13 is open.
  • An annular narrow gap is formed between the tip 13 a of the baffle tube 13 and the protector 113.
  • the air chamber 50 communicates with the sound emitting unit 11 a of the acoustic unit 11.
  • the end portion 13b on the rear portion 111r side of the baffle tube 13 is in airtight contact with the rear portion 111r over the entire circumference.
  • An end portion 13b is provided with an annular return portion 13c facing inward.
  • the return portion 13c is in surface contact following the hemispherical shell of the rear portion 111r, so that airtightness between the baffle tube 13 and the rear portion 111r is maintained.
  • the return part 13c reaches the intermediate part 111m.
  • the baffle tube 13 is much softer than the unit casing 111.
  • the baffle tube 13 has the same flexibility as the cap 12.
  • the baffle tube 13 is easily deformed when an external force is applied.
  • the baffle tube 13 is restored to its natural state when no external force is applied.
  • the shape of the baffle tube 13 shown in FIG. 2 is a natural state shape.
  • the baffle tube 13 has elasticity.
  • the baffle tube 13 is made of an elastomer.
  • An example of an elastomer is silicone rubber.
  • a relatively large frictional force acts between the baffle tube 13 made of elastomer and the cap 12 made of sponge material (foamed urethane foam, foamed silicone, etc.). The frictional force makes relative movement between the acoustic unit 11 and the cap 12 difficult. Thereby, the positional displacement of the cap 12 with respect to the acoustic unit 11 and the inadvertent or undesired separation of the cap 12 from the acoustic unit 11 are prevented.
  • the controller 30 has a casing 33.
  • the casing 33 is made of plastic.
  • the battery 31 and the wireless module 32 are accommodated in the casing 33.
  • a sound inlet 33a is opened at the end of the casing 33 on the side where the short portion 20A of the string-like body 20 is connected.
  • the battery 31 supplies power to the wireless module 32.
  • the battery 31 is a primary battery or a secondary battery.
  • the wireless module 32 includes a sound pickup unit 321, a communication unit 322, an operation unit 323, and a control unit 324.
  • the sound pickup unit 321 picks up the sound outside the container 30 through the sound inlet 33a and outputs a sound pickup signal (electric signal).
  • the output sound pickup signal is input to the communication unit 322.
  • the sound pickup unit 321 functions as a transmitter during a call.
  • the communication unit 322 receives a signal wirelessly transmitted from a communication device (audio content providing device such as an audio player or a smartphone) (not shown).
  • a communication device audio content providing device such as an audio player or a smartphone
  • Wi-Fi registered trademark
  • Bluetooth registered trademark
  • other protocols can be used as a communication protocol between the receiving unit and a transmitter (not shown).
  • the communication unit 322 has a right audio output terminal 322R and a left audio output terminal 322L.
  • the communication unit 322 performs processing of amplifying the received signal and generating a right audio drive signal (right audio signal) and a left audio drive signal (left audio signal) from the amplified received signal.
  • the right audio signal is output from the right audio output terminal 322R, and is input to the driver unit 112 of one ear wearing body 10 (for example, the ear wearing body 10A) through the conductive wire 201 of the string-like body 20.
  • the left audio signal is output from the left audio output terminal 322L, and is input to the driver unit 112 of the other ear wearing body 10 (for example, the ear wearing body 10B) through the conductive wire 201 of the string-like body 20.
  • Each driver unit 112 converts the input right audio signal and left audio signal into right audio and left audio, respectively, and outputs the result.
  • the communication unit 321 performs signal processing on the sound pickup signal input from the sound pickup unit 321 and transmits it to a communication device (not shown).
  • the ear wearing body 10 functions as a receiver.
  • the operation unit 323 includes an on / off button 323A, an increase button 323B, and a decrease button 323C.
  • the on / off button 323 ⁇ / b> A, the increase button 323 ⁇ / b> B, and the decrease button 323 ⁇ / b> C are exposed from an opening provided in the casing 32.
  • the on / off button 323 ⁇ / b> A is an operator for turning on / off the supply of electric power from the battery 31.
  • the increase button 323B is an operator for increasing the output of an electrical signal by the communication unit 322.
  • the decrease button 323C is an operator for decreasing the output of an electrical signal by the communication unit 322.
  • the control unit 324 turns on / off the supply of power from the battery 31 or increases / decreases the output of electric signals from the communication unit 322 according to basic operations performed on the operation unit 323.
  • the basic operation is an operation of pressing the on / off button 323A, the increase button 323B, and the decrease button 323C independently for a predetermined time.
  • control unit 324 responds to an incoming call according to an additional operation performed on the operation unit 323, terminates the call state, redials, starts playing a song, switches to the next song, etc. Execute the process.
  • the additional operation includes an operation of pressing the on / off button 323A, the increase button 323B, and the decrease button 323C independently for a predetermined time different from the basic operation.
  • the addition operation includes an operation of continuously pressing the on / off button 323A, the increase button 323B, and the decrease button 323C for a predetermined number of times independently. Note that the control unit 324 immediately executes an incoming call response (call start processing) when any button is operated during an incoming call.
  • the earphone 1 ⁇ / b> A of the first embodiment configured as described above has a baffle tube between the acoustic unit 11 and the inner wall 86 of the ear canal 84 when the cap 12 fits into the ear canal 84. 13 and the cap 12 are interposed. Thereby, the acoustic unit 11 is supported away from the inner wall 86 of the ear canal 84.
  • the acoustic unit 11 is disposed with the sound emitting part 11 a facing the external auditory canal 84.
  • the sound emitting unit 11 a of the acoustic unit 11 is disposed near the entrance 85 in the ear canal 84.
  • the sound emitted from the acoustic unit 11 passes through the cap 12 radially and is emitted into the ear canal 84. Since the sound conduit 953 and the earpiece 954 (see FIG. 8) are not present, the reproduced sound emitted from the acoustic unit 11 near the entrance 85 in the external auditory canal 84 passes through the cap 12 and passes through the skin of the external auditory canal 84 and its surroundings. Transmitted to bone.
  • the sound emitted from the acoustic unit 11 can be recognized as natural sound by making the best use of the ability of the part around the ear canal 84 to feel the sound. .
  • the diaphragm 1121a as the sound emitting portion of the driver unit 112 is disposed near the entrance 85 in the ear canal 84, so that the sound emitted from the driver unit 112 can be efficiently generated. 84. Therefore, although the small (small output) driver unit 112 is used, the reproduced sound can be recognized as natural sound.
  • the earphone 1A of the first embodiment does not use the sound conduit 953 (see FIG. 8), the sound range transmitted from the driver unit 112 to the auditory organ is not limited. Therefore, the performance of the driver unit 112 can be fully exhibited.
  • the earphone 1A having a novel design including the almost perfect spherical ear mounting body 10 formed by combining the cap 12, the baffle tube 13, and the lid 114.
  • the outer surface Sa of the flexible cap 12 occupies most of the spherical surface S of the ear mounting body 10 in the earphone 1A of the first embodiment, it is easy to fit the ear canal 84 of many people. Even if the angle of the acoustic unit 11 with respect to the ear 84 is slightly changed, the cap 12 and the baffle tube 13 are interposed between the inner wall 86 of the external auditory canal 84 and the acoustic unit 11. It is supported away from the inner wall 86.
  • the earphone 1A of the first embodiment has only a cap 12 in contact with the ear 84, and the cap 12 is made of a flexible sponge material. Also, the ear 84 is less painful.
  • the cap 12 fitted to the external auditory canal 84 is made of a sponge material having air permeability, so that the external auditory canal 84 is not hermetically sealed. For this reason, touch noise hardly occurs.
  • the pair of ear attachment bodies 10 respectively attached to the left and right ears 84 have the same shape and the same size, so that the shape is the same for the right ear and the left ear. Compared with the case where a different pair of mounting bodies is provided, the manufacturing cost can be reduced.
  • the earphone 1A of the first embodiment includes the baffle tube 13 between the acoustic unit 11 and the cap 12, the mid-bass reproducibility is good even though the ear canal 84 is not hermetically sealed. This is because sound leakage outside the ear canal 84 is suppressed. Further, since the internal space of the baffle tube 13 forms the air chamber 50, the mid-low sound reproducibility is further improved.
  • the baffle tube 13 can function as an acoustic amplifier (passive amplifier) in the mid-low range by causing the air in the air chamber 50 to resonate with the sound emitted from the acoustic unit 11.
  • the baffle tube 13 functions as a “baffle” that efficiently reflects the sound into the ear canal 84.
  • the earphone 1A of the first embodiment has a narrow annular gap formed between the tip portion 13a of the baffle tube 13 and the protector 113, so that the sound is emitted from the sound emitting portion 11a and is behind the acoustic unit 11. Sound that wraps around (outside the ear canal 84) is easily transmitted into the air chamber 50. And since the end portion 13b on the rear portion 111r side of the baffle tube 13 is in airtight contact with the rear portion 111r over the entire circumference, the sound transmitted into the air chamber 50 is behind the air chamber 50 (the ear canal 84). It becomes difficult to communicate to the outside. Thereby, sound leakage to the outside of the external auditory canal 84 is more effectively suppressed, and the mid / low frequency reproducibility becomes better.
  • the flexible baffle tube 13 existing between the acoustic unit 11 and the cap 12 also serves as a cushion in the earphone 1A of the first embodiment, the synergistic action of the cap 12 and the baffle tube 13 enables The earphone can realize a very good wearing feeling that cannot be experienced.
  • the earphone 1A of the first embodiment includes a first resonance chamber 41, a second resonance chamber 42, and a third resonance chamber 43, and the first resonance chamber 41 and the second resonance chamber 42 are narrow passages (port 1122c). ), The bass is amplified. And since the 2nd resonance chamber 42 and the 3rd resonance chamber 43 are connected by the thin channel
  • the earphone 1A of the first embodiment can recognize the presence of the air chamber 50 from the outside.
  • the earphone 1A having a novel structure including the air chamber 50 is realized.
  • a novel earphone 1A having both high acoustic performance and functional beauty can be realized.
  • the baffle tube 13 is compressed from the outside together with the cap 12 when attached to the ear 80.
  • the earphone 1B of the second embodiment shown in FIG. 5 includes a magnetic body 60 for connecting the pair of ear wearing bodies 10 with each other by magnetic force.
  • the magnetic body 60 is fixed to the back surface of the lid 114 and provided in the third resonance chamber 43. Other configurations are the same as those of the first embodiment.
  • the magnetic body 60 is an annular member.
  • the magnetic body 60 is wrapped around the string-like body 20.
  • the magnetic body 60 provided in one ear mounting body 10 (for example, the ear mounting body 10A) is a permanent magnet.
  • the magnetic body 60 provided in the other ear mounting body 10 (for example, the ear mounting body 10B) is a ferromagnetic body such as a permanent magnet or iron.
  • the permanent magnet includes a ferrite magnet, a neodymium magnet, and the like.
  • the earphone 1B can be kept in an annular shape by connecting the both ear mounting bodies 10 with a magnetic force, so that the earphone 1B can be attached to the user's neck like a necklace. Moreover, the earphone 1B can be stably worn on the wrist of the user by winding the earphone 1B around the wrist of the user and connecting the ear-wearing bodies 10 together with a magnetic force. Other operations and effects are the same as those of the first embodiment.
  • the earphone 1C of the third embodiment shown in FIG. 6 does not include the controller 30 (see FIG. 1).
  • the pair of ear wearing bodies 10 share the function of the controller 30.
  • Other configurations are the same as those in the first embodiment or the second embodiment.
  • an extremely simple and novel earphone 1C including a pair of spherical ear mounting bodies 10 and a string-like body 20 that connects the both ear mounting bodies 10 to each other is realized. Since the earphone 1C of the third embodiment does not have the controller 30 between the pair of ear wearing bodies 10, the earphone 1C is easy to be worn around the user's wrist. Other operations and effects are the same as those in the first embodiment or the first embodiment.
  • the earphone 1 ⁇ / b> A of the first embodiment and the earphone B of the second embodiment are provided with a controller at a position offset from the longitudinal center of the string-like body 20.
  • the controller 30 may be provided in the unit.
  • the cord-like body 20 is always connected to the binaural mounting body 10, but a terminal for re-cable is provided on the binaural mounting body 10 and an arbitrary cord is connected to the terminal.
  • the shape body 20 may be connected.
  • an annular narrow gap is formed between the tip 13a of the baffle tube 13 and the protector 113, but the gap is not an essential component.
  • the absence of the gap or the absence of the gap may be advantageous in improving the mid-bass reproducibility.
  • the baffle tube 13 can function as a higher performance acoustic amplifier due to the structure in which the air in the air chamber 50 having a sealed structure resonates with the sound emitted from the acoustic unit 11.
  • the earphones 1A to 1C of the above embodiment include the first resonance chamber 41, the first resonance chamber 41 is not an essential component.
  • the earphones 1A to 1C of the above embodiment include the second resonance chamber 42, the second resonance chamber 42 is not an essential component.
  • the earphones 1A to 1C of the above embodiment include the third resonance chamber 43 and the internal space 44, the third resonance chamber 43 and the internal space 44 are not essential components.
  • the earphones 1A to 1C of the above-described embodiment include the driver casing 1122 as the first enclosure, the driver casing 1122 is not an essential component. That is, the acoustic unit 11 may constitute the driver unit 112 itself.
  • an acoustic vibration absorbing layer may be provided in the space on the string-like body 20 side of the air chamber 50 (the space on the right side in the drawing).
  • the acoustic vibration absorbing layer By providing the acoustic vibration absorbing layer in the air chamber 50, it is possible to enhance the performance of preventing sound leakage to the outside of the ear canal 84 by the baffle tube 13.
  • ⁇ GEL registered trademark
  • ⁇ GEL registered trademark
  • ⁇ GEL is a soft gel-like material mainly composed of silicone.
  • a member made of a sponge material is used as the cap 12, but the cap 12 is not limited to a member made of a sponge material as long as it has elasticity, flexibility, and air permeability.
  • the mounting mode in which the diaphragm 1121a is disposed near the entrance 85 in the ear canal 84 is illustrated, but other mounting modes are possible.
  • the mounting mode of the acoustic device according to the present invention includes a mounting mode in which the diaphragm 1121a is disposed just at the entrance 85 of the ear canal 84.
  • the mounting mode of the acoustic device according to the present invention includes a mounting mode in which the diaphragm 1121a is disposed near the entrance 85 outside the ear canal 84.
  • the diaphragm 1121a is exemplified as the sound emitting part of the driver unit 112, but the sound emitting part is not limited to the diaphragm 1121a.
  • the sound emission part of the driver unit 112 may be an outlet (window) of sound emitted from a vibrating body that is a sound generation source. That is, the driver unit 112 is not limited to a dynamic type, and may be a balanced armature type.
  • the driver unit 112 may include a plurality of electroacoustic transducers 1121 having different acoustic characteristics, such as for a low frequency band, a mid frequency band, and a high frequency band.
  • the controller 30 includes the battery 31, but a battery casing that houses the battery 31 may be provided in an intermediate portion of the string-like body 20 separately from the controller 30.
  • baffle tube 13 tubular member
  • baffle tube 13 torus-like flexible hollow member which surrounds the acoustic unit 11. Also good.
  • the baffle torus is stably held by the acoustic unit 11 by being attached to the constricted portion between the front member 111f and the rear member 111r of the unit casing 111.
  • the interposition member is referred to as a “baffle tube”, but may be referred to as an “air tube” in the sense of having an air chamber 50.
  • “baffle torus” may be referred to as “air torus”.
  • the interposition member may be referred to as “air cushion” or “cushion tube” in the sense that it acts as a cushion.
  • the example of the earphone is shown as an example of the embodiment of the acoustic device.
  • the acoustic device according to the present invention includes an acoustic device other than the earphone.
  • Examples of acoustic devices other than earphones include devices equipped with a microphone, such as hearing aids and income.
  • a pair of spherical ear attachments (ear attachments 10, 10A, 10B) respectively attached to the left and right ears (ears 84);
  • a string-like body (string-like body 20) for connecting both ear wearing bodies to each other;
  • the string-like body extends from the spherical surface (surface S) of the ear wearing body,
  • the ear wearing body is: An acoustic unit (acoustic unit 11), a skin contact member (cap 12), and an interposition member (baffle tube 13);
  • the acoustic unit has at least a sound emitting part (sound emitting part 11a) and a side part (side part 11s) covered with the skin contact member,
  • the skin contact member is a member having flexibility, elasticity and breathability, and transmitting sound,
  • the interposition member exists between the skin contact member and the acoustic unit, and forms an air chamber (air chamber 50) between the skin contact member and the acoustic unit,
  • the skin contact member is a member having flexibility, elasticity, and air permeability
  • the feeling of wearing on the ear is good, and it is difficult to cause pain in the ear even when worn for a long time.
  • the acoustic device of (1) is easily fitted to the ear canal of many people because the portion that fits into the ear canal is a spherical ear mounting body. Since the acoustic chamber of (1) has an air chamber between the skin contact member and the acoustic unit, the mid-low sound reproducibility is good.
  • the pair of spherical ear mounting bodies are acoustic devices having the same shape and the same size.
  • the pair of ear mounting bodies respectively mounted on the left and right ears have the same shape and the same size, a pair of ear mountings different in shape for the right ear and the left ear The manufacturing cost can be reduced as compared with the case where the body is provided.
  • the skin contact member is a member made of a sponge material.
  • the acoustic device of (3) is only a member made of sponge material in contact with the ear, the feeling of wearing on the ear is good, and even when worn for a long time, the ear is less painful.
  • the outer surface (outer surface Sa) of the skin contact member occupies most of the surface of the ear wearing body.
  • the outer surface of the skin contact member which is a member having flexibility, elasticity, and air permeability, occupies most of the surface of the ear wearing body, the feeling of wearing on the ear is good.
  • the interposition member is an acoustic device that is a flexible member that is wrapped around the acoustic unit.
  • the sound device has good mid-low sound reproducibility because sound leakage is suppressed by interposing the interposing member forming the air chamber around the sound unit.
  • the air chamber is an acoustic device that communicates with the sound emitting unit of the acoustic unit.
  • the acoustic device communicates with the sound emitting unit of the acoustic unit, the sound emitted from the sound emitting unit and circulated behind the acoustic unit is easily transmitted to the air chamber.
  • the mid-bass reproducibility may be improved by the resonance of the air in the sealed air chamber with the sound emitted from the acoustic unit.
  • the sound device further suppresses sound leakage.
  • the string-like body is a cord having a conductive wire.
  • a pair of spherical ear attachments respectively attached to the left and right ears are connected to each other with a cord having a conductive wire.
  • the acoustic device can be operated by a controller provided in the middle part of the string-like body.
  • the controller is The cord can be placed on one shoulder of the user in a state where the center portion in the longitudinal direction of the cord is arranged behind the base of the user's neck and the pair of ear wearing bodies are respectively attached to the left and right ears of the user.
  • the acoustic device is provided at a position offset from the longitudinal center of the cord.
  • the weight of the controller can be received by one shoulder of the user.
  • the pair of ear mounted bodies is an acoustic device including a magnetic body (magnetic body 60) for connecting both ear mounted bodies with magnetic force.
  • the weight of the controller equipped with the battery can be received by one shoulder of the user.
  • the acoustic device according to any one of (1) to (13), A first enclosure (driver casing 1122) that houses the electroacoustic transducer; A second enclosure (unit casing 111) for housing the first enclosure; The first enclosure forms a first resonance chamber (first resonance chamber 41) with the electroacoustic transducer, The second enclosure forms a second resonance chamber (second resonance chamber 42) with the first enclosure, The acoustic device, wherein the first enclosure is provided with a port (port 1122c) that allows the first resonance chamber and the second resonance chamber to communicate with each other.
  • the sound device of (14) Since the low sound is amplified by the first resonance chamber and the second resonance chamber, the sound device of (14) has better mid-low sound reproducibility.
  • the bass is further amplified by the change in the viscosity of the air in the communication portion between the second resonance chamber and the third resonance chamber, so that the mid-bass reproducibility is further improved.
  • Earphone Sound device 10A, 10B Ear mounting body 10 Ear mounting body 11 Acoustic unit 11a Sound emitting part 11b Outer peripheral surface 111 Unit casing (second enclosure) 111b Fitting portion 111c Rear end 111f Front portion 111m Intermediate portion 111r Rear portion 112 Driver unit 1121 Electroacoustic transducer 1121a Diaphragm 1121b Electromechanical coupling system 1122 Driver casing (first enclosure) 1122a Cylindrical portion 1122b End plate portion 1122c Port 113 Protector 114 Lid 114a Through-hole 12 Cap (skin contact member) 13 Baffle tube (intervening member) 13a Front end portion 13b End portion 13c Return portion 13d Inner peripheral surface 20 String-like body 20A Short portion 20B Long portion 201 Conductor 202 Solder 30 Controller 31 Battery 32 Wireless module 321 Sound pickup portion 322 Communication portion 323 Operation portion 324 Control portion 323A ON / OFF button 323B Increase button 323C Decrease button 33

Abstract

La présente invention concerne un dispositif acoustique qui offre une bonne sensation lorsqu'il est porté dans les oreilles. Ce dispositif acoustique comprend : une paire de corps sphériques portés à l'oreille qui sont respectivement portés dans les oreilles droite et gauche ; et un corps en forme de cordon qui relie les deux corps portés à l'oreille. Le corps en forme de cordon s'étend directement à partir de la surface sphérique du corps porté à l'oreille. Le corps porté à l'oreille comprend une unité acoustique, un élément de contact avec la peau et un élément d'interposition. Au moins une partie d'émission sonore et une partie latérale de l'unité acoustique sont recouvertes par l'élément de contact avec la peau. L'élément de contact avec la peau présente une flexibilité, une élasticité et une perméabilité à l'air, et transmet un son. L'élément d'interposition est présent entre l'élément de contact avec la peau et l'unité acoustique, et forme une chambre à air entre l'élément de contact avec la peau et l'unité acoustique. Grâce à l'élément de contact avec la peau qui est monté dans un canal auditif externe, l'unité acoustique est supportée à distance de la paroi interne du canal auditif externe.
PCT/JP2018/013516 2017-06-07 2018-03-30 Dispositif acoustique WO2018225354A1 (fr)

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Publication number Priority date Publication date Assignee Title
US20230384739A1 (en) * 2022-05-24 2023-11-30 Chancellor I. DePaul Wearable Wake Up Alarm System

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098792A (ja) * 1983-11-04 1985-06-01 Matsushita Electric Ind Co Ltd ヘツドホン
JPS6379500A (ja) * 1987-05-30 1988-04-09 Sony Corp 電気音響変換器
JPH02250499A (ja) * 1989-03-24 1990-10-08 Kyushu Hitachi Maxell Ltd イヤホーン
JPH03130700U (fr) * 1990-04-10 1991-12-27
JPH0591584A (ja) * 1991-09-30 1993-04-09 Toshiba Corp イヤホン
JPH069293U (ja) * 1992-07-10 1994-02-04 アイワ株式会社 ヘッドホン等の操作部機構
JPH0984169A (ja) * 1995-09-11 1997-03-28 Arata Higuchi ホルダ付イヤホン並びにイヤホンホルダ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51125932U (fr) * 1975-04-04 1976-10-12
JPS5991090U (ja) * 1982-12-10 1984-06-20 アイワ株式会社 オ−プンエア式ヘツドホ−ン
JPH0681196U (ja) * 1993-04-14 1994-11-15 株式会社ミヨシ カバー付き耳栓形イヤホン
JP5258413B2 (ja) * 2008-06-25 2013-08-07 モレックス インコーポレイテド イヤーチップおよび挿入型イヤホン
JP2011151793A (ja) * 2009-12-25 2011-08-04 Victor Co Of Japan Ltd イヤーピース及びイヤホン
JP2012050049A (ja) * 2010-08-30 2012-03-08 Junichi Kakumoto イヤホンとイヤホン用遮音エレメント

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098792A (ja) * 1983-11-04 1985-06-01 Matsushita Electric Ind Co Ltd ヘツドホン
JPS6379500A (ja) * 1987-05-30 1988-04-09 Sony Corp 電気音響変換器
JPH02250499A (ja) * 1989-03-24 1990-10-08 Kyushu Hitachi Maxell Ltd イヤホーン
JPH03130700U (fr) * 1990-04-10 1991-12-27
JPH0591584A (ja) * 1991-09-30 1993-04-09 Toshiba Corp イヤホン
JPH069293U (ja) * 1992-07-10 1994-02-04 アイワ株式会社 ヘッドホン等の操作部機構
JPH0984169A (ja) * 1995-09-11 1997-03-28 Arata Higuchi ホルダ付イヤホン並びにイヤホンホルダ

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JPWO2018225357A1 (ja) 2019-06-27
CN110301139A (zh) 2019-10-01
JP6500257B1 (ja) 2019-04-17
JP6454934B1 (ja) 2019-01-23
JPWO2018225354A1 (ja) 2019-06-27
WO2018225357A1 (fr) 2018-12-13
JP2019080338A (ja) 2019-05-23

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