WO2023181567A1 - Speaker device - Google Patents

Speaker device Download PDF

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Publication number
WO2023181567A1
WO2023181567A1 PCT/JP2022/047892 JP2022047892W WO2023181567A1 WO 2023181567 A1 WO2023181567 A1 WO 2023181567A1 JP 2022047892 W JP2022047892 W JP 2022047892W WO 2023181567 A1 WO2023181567 A1 WO 2023181567A1
Authority
WO
WIPO (PCT)
Prior art keywords
internal space
dome
speaker device
cylindrical portion
cylindrical
Prior art date
Application number
PCT/JP2022/047892
Other languages
French (fr)
Japanese (ja)
Inventor
倉司 河邉
Original Assignee
倉司 河邉
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 倉司 河邉 filed Critical 倉司 河邉
Priority to CN202280030843.9A priority Critical patent/CN117242787A/en
Priority to JP2023541601A priority patent/JP7360230B1/en
Publication of WO2023181567A1 publication Critical patent/WO2023181567A1/en

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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
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Definitions

  • the present invention relates to a speaker device.
  • the ideal speaker device is a full-range speaker device that covers all sound ranges with one speaker unit, but it is not easy to accurately reproduce sounds in all sound ranges, especially deep bass.
  • multi-way speaker devices such as 2WAY and 3WAY are known, which divide the sound range and include multiple speaker units (woofers, squawkers, tweeters, etc.) in order to reproduce sound over a wide range.
  • speaker units woofers, squawkers, tweeters, etc.
  • the sounds of the speaker units interfere with each other, resulting in distorted sounds and blurred sound images.
  • a cylindrical duct is installed in an enclosure with an opening, and based on the Helmholtz resonance principle, the bass reflex system resonates and enhances the bass emitted from the back of the speaker unit.
  • type speaker devices are known (for example, see Patent Document 1).
  • the present invention provides a speaker device that has a simple structure and can easily and reliably reproduce sounds with a wide range, especially deep bass.
  • a speaker device includes a sealed casing, a partition section that divides the inside of the casing into a first internal space and a second internal space, and a section provided on the first internal space side of the casing. and at least one speaker unit.
  • the partition has a base provided with at least one through hole, a hollow spherical shape or an ellipsoidal spherical shape, and bulges from the base toward the first internal space or the second internal space, and has a top portion. It has at least one dome portion provided with a communication hole that communicates the first internal space and the second internal space.
  • At least one dome portion is provided with a first cylindrical portion that extends from the position of the communication hole so as to protrude toward at least one of the first internal space side and the second internal space side.
  • One end of the first cylindrical portion opens into the first internal space, and the other end opens into the second internal space.
  • the base is provided with a second cylindrical portion that extends from the position of the at least one through hole so as to protrude toward at least the first internal space.
  • the second cylindrical portion has one end open to the second internal space and the other end closed.
  • the partition portion includes a base portion and a dome portion.
  • the dome portion is provided with a first cylindrical portion.
  • a second cylindrical portion is provided at the base.
  • a dome part of the partition part that divides the inside of the casing into a first internal space and a second internal space, a first cylindrical part that communicates the first internal space and the second internal space via a communication hole in the dome part, and
  • the second cylindrical portion connected from the second internal space allows for easy and reliable reproduction of a wide range of sounds, especially deep bass sounds, despite the simple structure.
  • a single speaker unit can reproduce sounds with a wide range of sounds.
  • the first cylindrical portion extends from the position of the communication hole of the at least one dome portion to protrude toward the first internal space and the second internal space, and is provided through the communication hole. It's okay. In this case, the first cylindrical portion makes it possible to more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
  • the second cylindrical portion extends from the position of the at least one through hole in the base to the first internal space side and the second internal space side, and is provided so as to be inserted through the at least one through hole. Good too. In this case, the second cylindrical portion makes it possible to more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
  • the other end of the second cylindrical portion may be closed by the inner wall surface of the casing on the first internal space side.
  • a sufficient internal volume of the second cylindrical portion can be ensured, and a wide range of sounds, especially deep bass sounds, can be reproduced more easily and reliably.
  • At least one dome portion of the partition portion may have a hemispherical shape with a hollow interior.
  • shape of the dome portion due to the shape of the dome portion (dome shape), it is possible to reproduce sounds with a wide range, especially deep bass sounds, even more easily and reliably.
  • FIG. 1 is a perspective view showing a speaker device according to a first embodiment.
  • FIG. 2 is a cross-sectional explanatory diagram showing the structure of the speaker device according to the first embodiment.
  • FIG. 3 is a sectional view taken along the line AA in FIG. 2;
  • FIG. 3 is a perspective view showing a dome portion of a partition in the speaker device of the first embodiment.
  • FIG. 2 is a cross-sectional view showing a dome portion of a partition in the speaker device of the first embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a second embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a second embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a second embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a third embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a fourth embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a fifth embodiment.
  • FIG. 7 is a cross-sectional view showing a dome portion of a partition in a speaker device according to a sixth embodiment.
  • FIG. 7 is a cross-sectional view showing a dome portion of a partition in a speaker device according to a sixth embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a seventh embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to an eighth embodiment.
  • FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a ninth embodiment.
  • the speaker device 1 of this embodiment includes an enclosure (casing) 2 and a speaker unit 3.
  • an enclosure casing
  • a speaker unit 3 Note that in the following description, directions such as front, back, left, right, top and bottom will be used, but this is merely an expression for convenience of explanation and is not particularly limited.
  • the enclosure 2 has a rectangular parallelepiped shape.
  • the enclosure 2 has a front part 21 , a rear part 22 , a left part 23 , a right part 24 , an upper part 25 , and a lower part 26 .
  • a circular opening 211 is provided at the bottom of the front portion 21 .
  • the speaker unit 3 is attached to the opening 211 of the front section 21 so as to close the opening 211 of the front section 21 .
  • the enclosure 2 has a closed internal space 20.
  • the material of the enclosure 2 is general plywood.
  • the material used for the enclosure 2 is not limited to this, and various materials such as wood such as bubinga, medium density fiberboard (MDF), resin, and metal can be used.
  • the internal volume of the enclosure 2 can be set as appropriate. By reducing the internal volume of the enclosure 2, it is possible to downsize the enclosure 2 and even the speaker device 1 as a whole.
  • the speaker unit 3 is a conventionally known speaker unit that converts electrical signals into vibrations to produce sound, and includes a diaphragm and the like. Although not shown, the speaker unit 3 is connected to an amplifier or a player via a cable or the like.
  • the speaker unit 3 is a cone-shaped speaker. As the speaker unit 3, in addition to the cone-shaped speaker, various speaker units such as a dome-shaped speaker and a horn-shaped speaker can be used.
  • the speaker unit 3 is fixed to the inner wall surface of the front part 21 using screws or the like. Note that the speaker unit 3 may be fixed to the outer wall surface of the front section 21. By sufficiently fixing the speaker unit 3 to the enclosure 2, it is possible to suppress twisting of the speaker unit 3 and ensure stable operation of the diaphragm.
  • a partition 4 is provided in the enclosure 2 to partition the internal space 20 of the enclosure 2 into two spaces (a first internal space 201 and a second internal space 202).
  • the partition part 4 has a base part 41 and a dome part 42 attached to the base part 41.
  • the base portion 41 is formed into a flat plate shape.
  • the base portion 41 is arranged parallel to the upper surface portion 25 and the lower surface portion 26 of the enclosure 2 .
  • the four sides of the base 41 are fixed to the front surface 21 , the rear surface 22 , the left surface 23 , and the right surface 24 of the enclosure 2 .
  • a circular attachment opening 411 for attaching the dome portion 42 is provided at the front portion of the base portion 41 .
  • a circular through hole 412 is provided at the rear of the base 41 .
  • the dome portion 42 has a hollow spherical shape inside.
  • the term "ball-cut” refers to the shape of a sphere cut out in one plane.
  • the dome portion 42 has a hemispherical shape (hemispherical dome shape), which is obtained by cutting a hollow sphere into exactly half.
  • the outer surface 421 of the dome portion 42 is formed of a convex spherical surface.
  • the inner surface 422 of the dome portion 42 is formed of a concave spherical surface.
  • the height of the dome portion 42 is half the diameter (same as the radius). The diameter and height of the dome portion 42 can be changed as appropriate.
  • a circular communication hole 424 is provided in the top portion 423 of the dome portion 42 .
  • a hemispherical dome portion 42 is attached to the outer edge of the attachment opening 411 on the upper surface of the base 41.
  • the dome portion 42 is arranged such that the top portion 423 side (convex side) faces upward.
  • the dome portion 42 is provided so as to bulge upward from the base portion 41.
  • the material of the base section 41 is general plywood.
  • the material of the base 41 is not limited to this, and various materials such as wood, resin, and metal such as stainless steel can be used, for example.
  • the material of the dome portion 42 is acrylic resin.
  • the material of the dome portion 42 is not limited to this, and various materials such as resin such as polypropylene (PP), metal, etc. can be used, for example.
  • the partitioning section 4 partitions the internal space 20 within the enclosure 2 into a first internal space 201 and a second internal space 202. Inside the enclosure 2, a first internal space 201 below the partition 4 and a second internal space 202 above the partition 4 are formed. Therefore, the dome portion 42 is provided so as to bulge from the base portion 41 toward the second internal space 202 side.
  • the partition section 4 is disposed above the speaker unit 3 and above an intermediate position in the vertical direction within the enclosure 2. Therefore, the speaker unit 3 is provided on the first internal space 201 side of the enclosure 2.
  • the position of the partition 4 can be changed as appropriate within the enclosure 2. By changing the position of the partition 4, the internal volume of the two spaces (first internal space 201, second internal space 202) in the enclosure 2 can be adjusted, and the sound pressure of heavy bass can be adjusted. Become.
  • the dome part 42 of the partition part 4 is provided with a first cylindrical part 51 that extends in the vertical direction so as to protrude from the position of the communication hole 424 to the first internal space 201 side and the second internal space 202 side.
  • the first cylindrical portion 51 has a cylindrical shape with a circular cross section perpendicular to the axial direction.
  • the outer diameter of the first cylindrical portion 51 is the same as the inner diameter of the communication hole 424 of the dome portion 42 .
  • the first cylindrical portion 51 is inserted through the communication hole 424 of the dome portion 42 .
  • the first cylindrical portion 51 is provided so as to penetrate the dome portion 42 via the communication hole 424.
  • the first cylindrical portion 51 has a lower end (one end) 511 opening into the first internal space 201 and an upper end (other end) 512 opening into the second internal space 202 .
  • the first internal space 201 and the second internal space 202 of the enclosure 2 communicate with each other via the communication hole 424 of the dome part 42 of the partition part 4 and the first cylindrical part 51. That is, the first internal space 201 and the second internal space 202 of the enclosure 2 are in communication with each other through the first cylindrical part 51 inserted into the communication hole 424 of the dome part 42 of the partition part 4 . Therefore, in the enclosure 2 (internal space 20), the air flow generated by the sound emitted from the back surface (rear surface) of the speaker unit 3 moves through the dome portion 42 and the first cylindrical portion 51 provided in the dome portion 42. It is created between the first internal space 201 and the second internal space 202 via.
  • a second cylindrical portion 52 is provided at the base 41 of the partitioning portion 4 and extends in the vertical direction so as to protrude from the position of the through hole 412 toward the first internal space 201 and the second internal space 202.
  • the second cylindrical portion 52 has a cylindrical shape with a circular cross section perpendicular to the axial direction.
  • the outer diameter of the second cylindrical portion 52 is the same as the inner diameter of the through hole 412 of the base portion 41.
  • the second cylindrical portion 52 is provided to be inserted through the through hole 412 of the base portion 41.
  • the second cylindrical portion 52 is provided so as to penetrate the base portion 41 via the through hole 412.
  • the second cylindrical portion 51 has an upper end (one end) 521 open to the second internal space 202 and a lower end (other end) 522 closed.
  • the lower end 522 of the second cylindrical portion 52 extends to the lower surface portion 26 of the enclosure 2 and is closed by the inner wall surface of the lower surface portion 26 .
  • the second cylindrical portion 52 is provided so as to enter into the first internal space 201 by an amount extending downward from the position of the through hole 412 of the base 41 so as to protrude toward the first internal space 201 side.
  • the second internal space 202 of the enclosure 2 communicates with the space inside the second cylindrical portion 52 via the opening portion of the upper end 521 of the second cylindrical portion 52 .
  • the air flow generated by the sound emitted from the back surface (rear surface) of the speaker unit 3 is directed to a second cylindrical portion connecting the second internal space 202 and the second internal space 202. This occurs between the space within 52.
  • the material of the first cylindrical portion 51 and the second cylindrical portion 52 is hard polyvinyl chloride (PVC).
  • PVC polyvinyl chloride
  • the material of the first cylindrical part 51 and the second cylindrical part 52 is not limited to this, and various materials such as wood, resin, metal, etc. can be used, for example. Moreover, the materials of the first cylindrical portion 51 and the second cylindrical portion 52 may be the same or different.
  • the partition section 4 has a base section 41 and a dome section 42 .
  • the dome portion 42 is provided with a first cylindrical portion 51 .
  • the base portion 41 is provided with a second cylindrical portion 52 .
  • the first internal space 201 and the second internal space 202 are connected to each other through the dome part 42 of the partition part 4 that divides the inside of the enclosure 2 into a first internal space 201 and a second internal space 202, and a communication hole 424 of the dome part 42.
  • one speaker unit 3 can reproduce sounds with a wide range. That is, the speaker device 1 of this embodiment can realize a full-range speaker device that covers the entire sound range with one speaker unit. This eliminates the need for conventional multiway systems that include multiple speaker units (woofers, squawkers, tweeters, etc.) to reproduce a wide range of sounds. Furthermore, since there is only one speaker unit 3, the overall size of the speaker device 1 can be reduced.
  • the first cylindrical portion 51 extends from the position of the communication hole 424 of the dome portion 42 so as to protrude toward the first internal space 201 side and the second internal space 202 side. It is installed by inserting it through. Therefore, the first cylindrical portion 51 can more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
  • the second cylindrical portion 52 extends from the position of the through hole 412 of the base portion 41 so as to protrude toward the first internal space 201 side and the second internal space 202 side, and is provided by being inserted through the through hole 412. . Therefore, the second cylindrical portion 52 can more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
  • the lower end 522 of the second cylindrical portion 52 is closed by the inner wall surface of the lower surface portion 26, which is the inner wall surface on the first internal space 201 side of the enclosure 2. Therefore, a sufficient internal volume of the second cylindrical portion 52 can be secured, and sounds with a wide range, especially deep bass, can be reproduced more easily and reliably.
  • the dome portion 42 of the partition portion 4 has a hollow hemispherical shape inside. Therefore, due to the shape of the dome portion 42 (dome shape), it is possible to more easily and reliably reproduce sounds with a wide sound range, especially deep bass sounds. Furthermore, the communication hole 424 of the dome portion 42 allows the resolution of the reproduced sound to be increased.
  • This embodiment is an example in which the configuration of the first cylindrical portion 51 in the speaker device 1 is changed, as shown in FIGS. 6 and 7. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
  • the dome portion 42 of the partition portion 4 is provided with a first cylindrical portion 51 that extends downward from the position of the communication hole 424 so as to protrude toward the first internal space 201 side.
  • the upper end portion of the first cylindrical portion 51 is inserted into the communication hole 424 of the dome portion 42 .
  • the upper end 512 of the first cylindrical portion 51 is located at the same position as the communication hole 424 of the dome portion 42 and opens into the second internal space 202 .
  • the dome portion 42 of the partition portion 4 is provided with a first cylindrical portion 51 that extends upward from the position of the communication hole 424 so as to protrude toward the second internal space 202 side.
  • the lower end portion of the first cylindrical portion 51 is inserted into the communication hole 424 of the dome portion 42 .
  • the lower end 511 of the first cylindrical portion 51 is located at the same position as the communication hole 424 of the dome portion 42 and opens into the first internal space 201 .
  • This embodiment is an example in which the configuration of the second cylindrical portion 52 is changed in the speaker device 1, as shown in FIG. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
  • the second cylindrical part 52 extends from the position of the through hole 412 of the base 41 of the partition part 4 to the position between the base 41 and the lower surface part 26 of the enclosure 2 in the first internal space 201. It extends downward so as to protrude to the side.
  • a lower end 522 of the second cylindrical portion 52 is located between the base portion 41 and the lower surface portion 26 of the enclosure 2. The lower end 522 of the second cylindrical portion 52 is closed by a closing portion 523.
  • This embodiment is an example in which the configuration of the second cylindrical portion 52 in the speaker device 1 is changed, as shown in FIG. 9 . Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
  • the base 41 of the partitioning portion 4 is provided with a second cylindrical portion 52 that extends downward from the position of the through hole 412 so as to protrude toward the first internal space 201 side.
  • the upper end portion of the second cylindrical portion 52 is inserted into the through hole 412 of the base portion 41 .
  • the upper end 521 of the second cylindrical portion 52 is located at the same position as the through hole 412 of the base portion 41 and opens into the second internal space 202 .
  • This embodiment is an example in which the configuration of the dome section 42 of the partition section 4 in the speaker device 1 is changed, as shown in FIG. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
  • a hemispherical dome portion 42 is attached to the outer edge of the attachment opening 411 on the lower surface of the base 41 of the partition 4.
  • the dome portion 42 is arranged such that the top portion 423 side (convex side) faces downward. That is, the dome portion 42 is provided so as to bulge from the base portion 41 toward the first internal space 201 side.
  • This embodiment is an example in which the shape of the dome part 42 of the partition part 4 in the speaker device 1 is changed, as shown in FIGS. 11 and 12. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
  • the dome portion 42 of the partition portion 4 has a hollow ellipsoidal shape.
  • the ellipsoidal shape refers to a shape obtained by cutting an ellipsoid along one plane.
  • the dome portion 42 has a semi-ellipsoidal shape (semi-ellipsoidal dome shape) which is obtained by cutting a hollow spheroidal body into exactly half.
  • the outer surface 421 of the dome portion 42 is formed of a convex elliptical surface.
  • the inner surface 422 of the dome portion 42 is formed of a concave elliptical surface.
  • a circular communication hole 424 is provided in the top portion 423 of the dome portion 42 .
  • the dome portion 42 in FIG. 11 has a shape obtained by cutting a spheroid in half along a plane perpendicular to its long axis.
  • the height of the dome portion 42 is half the major axis (major axis radius).
  • the dome portion 42 in FIG. 12 has a shape obtained by cutting a spheroid along a plane perpendicular to its minor axis.
  • the height of the dome portion 42 is half the short axis (short axis radius).
  • This embodiment is an example in which the configuration around the speaker unit 3 in the speaker device 1 is changed, as shown in FIG. 13. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
  • a thick flat plate-shaped intermediate member 27 is arranged between the speaker unit 3 and the front part 21 of the enclosure 2.
  • the intermediate member 27 is provided with a hole portion 271 that is formed through the hole portion 271 in the thickness direction and has a substantially hemispherical (hemispherical trapezoidal) space whose inner diameter gradually decreases toward the front.
  • the intermediate member 27 is fixed to the inner wall surface of the front part 21 so that the hole part 271 communicates with the opening 211 of the front part 21.
  • the opening 211 of the front portion 21 has a horn shape with a circular cross section whose inner diameter gradually increases toward the front.
  • the speaker unit 3 is fixed to the rear surface of the intermediate member 27 using screws or the like.
  • a path for sound emitted from the front surface of the speaker unit 3 is formed by the hole portion 271 of the intermediate member 27 and the opening portion 211 of the front surface portion 21.
  • FIG. 14 is a sectional view at the same position as FIG. 3 described above.
  • two circular through holes 412 are provided at the rear of the base 41.
  • the two through holes 412 are arranged side by side in the left-right direction.
  • the base portion 41 is provided with two second cylindrical portions 52 that extend in the vertical direction so as to protrude from the position of each through hole 412 to the first internal space 201 side and the second internal space 202 side.
  • Each second cylindrical portion 52 is inserted through a through hole 412 of the base portion 41 .
  • Each second cylindrical portion 52 is provided so as to penetrate through the base 41 via the through hole 412.
  • FIG. 15 is a sectional view at the same position as FIG. 3 described above.
  • two circular mounting openings 411 are provided at the front of the base 41.
  • the two attachment openings 411 are arranged side by side in the left-right direction.
  • Two hemispherical dome portions 42 are provided on the upper surface of the base portion 41 and attached to the outer edge of each attachment opening 411 .
  • Each dome portion 42 is provided with a first cylindrical portion 51 that extends in the vertical direction so as to protrude from the position of the communication hole 424 to the first internal space 201 side and the second internal space 202 side. That is, two second cylindrical parts 52 are provided in the partition part 4. Each first cylindrical portion 51 is provided to be inserted through the communication hole 424 of the dome portion 42 . Each first cylindrical portion 51 is provided so as to penetrate the dome portion 42 via the communication hole 424.
  • the shape of the enclosure (casing) 2 is a rectangular parallelepiped, but it is not limited to this.
  • various shapes having the internal space 20, such as a cylindrical shape and a cubic shape, can be adopted.
  • the number of speaker units 3 is one, but it is not limited to this. Note that, as described above, in order to realize a full-range speaker device that covers the entire sound range with one speaker unit, it is preferable that the number of speaker units 3 is one.
  • the shape of the dome part 42 of the partition part 4 is a hollow hemispherical shape (hemispherical dome shape) or a semiellipsoidal shape (semiellipsoidal dome shape), but the shape is not limited to these. It's not something you can do.
  • the height of the dome portion 42 may be longer or shorter than the radius of the dome portion 42 .
  • the height of the dome portion 42 may be an ellipsoidal truncated shape that is longer or shorter than half (half axis) of the axis of the dome portion 42 in the height direction.
  • the base portion 41 and the dome portion 42 in the partition portion 4 are configured separately, but they may be configured integrally.
  • the first cylindrical portion 51 and the second cylindrical portion 52 have a cylindrical shape with a circular cross section orthogonal to the axial direction, but the shape is not limited to this. It may be a cylindrical shape in which orthogonal cross sections are elliptical, triangular, quadrilateral (square, rectangular), other polygons, or the like. Further, depending on the shapes of the first cylindrical portion 51 and the second cylindrical portion 52, the shapes of the communication hole 424 of the dome portion 42 and the through hole 412 of the base portion 41 in the partition portion 4 may be changed as appropriate.
  • the dome portion 42 and the first cylindrical portion 51 of the partition portion 4 are configured separately, but they may be configured integrally. Further, although the base portion 41 of the partition portion 4 and the second cylindrical portion 52 are configured separately, they may be configured integrally.
  • one or two second cylindrical portions 52 are provided on the base 41, but three or more may be provided.
  • one or two dome portions 42 are provided in the partition portion 4, but three or more dome portions 42 may be provided. Further, in accordance with the number of dome portions 42, one or two first cylindrical portions 51 are provided, but three or more may be provided.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

[Problem] To provide a speaker device that has a simple structure and makes it possible to easily and reliably reproduce a wide-range sound, especially a deep bass. [Solution] This speaker device 1 comprises an airtight enclosure 2, a compartment 4, and a speaker unit 3. The compartment 4 has a base part 41, and a dome part 42 the interior of which has a hollow hemispherical shape and in which a communicating hole 424 is provided at an apex 423. A first cylindrical part 51 is provided to the dome part 42, the first cylindrical part 51 extending so as to protrude from the position of the communicating hole 424 toward a first inner space 201 and a second inner space 202. A lower end 511 of the first cylindrical part 51 opens in the first inner space 201, and an upper end 512 of the first cylindrical part 51 opens in the second inner space 202. A second cylindrical part 52 is provided to the base part 41, the second cylindrical part 52 extending so as to protrude from the position of the communicating hole 412 toward the first inner space 201 and the second inner space 202. An upper end 521 of the second cylindrical part 52 opens in the second inner space 202, and a lower end 522 of the second cylindrical part 52 is closed.

Description

スピーカー装置speaker device
　本発明は、スピーカー装置に関する。 The present invention relates to a speaker device.
　従来、各種のスピーカー装置が知られている。スピーカー装置は、全ての音域を１つのスピーカーユニットでまかなうフルレンジスピーカー装置が理想的であるが、全ての音域の音、特に重低音を精度良く再生することは容易ではない。 Conventionally, various speaker devices are known. The ideal speaker device is a full-range speaker device that covers all sound ranges with one speaker unit, but it is not easy to accurately reproduce sounds in all sound ranges, especially deep bass.
　例えば、広い音域の音を再生するために、音域を分割して複数のスピーカーユニット（ウーハー、スコーカー、ツイーター等）を備えた、２ＷＡＹ、３ＷＡＹ等のマルチウェイ方式のスピーカー装置が知られている。しかしながら、マルチウェイ方式のスピーカー装置は、スピーカーユニット同士の音が干渉しあって音が歪み、音像がぼやけてしまう。 For example, multi-way speaker devices such as 2WAY and 3WAY are known, which divide the sound range and include multiple speaker units (woofers, squawkers, tweeters, etc.) in order to reproduce sound over a wide range. However, in multi-way speaker devices, the sounds of the speaker units interfere with each other, resulting in distorted sounds and blurred sound images.
　一方で、重低音を再生する方法として、開口部を有するエンクロージャー（筐体）に筒状のダクトを設け、ヘルムホルツ共鳴原理に基づいてスピーカーユニットの背面から発せられた低音を共振・増強する、バスレフ型スピーカー装置が知られている（例えば、特許文献１参照）。 On the other hand, as a method of reproducing deep bass, a cylindrical duct is installed in an enclosure with an opening, and based on the Helmholtz resonance principle, the bass reflex system resonates and enhances the bass emitted from the back of the speaker unit. type speaker devices are known (for example, see Patent Document 1).
特開２０１４－１８３３４１号公報Japanese Patent Application Publication No. 2014-183341
　しかしながら、従来のバスレフ型スピーカー装置は、低音域が少し強調されるものの、共振周波数よりもさらに低い低音はほとんど出なくなってしまう。そのため、全音域を再生することが困難である。 However, with conventional bass reflex speaker devices, although the bass range is slightly emphasized, bass frequencies even lower than the resonant frequency are hardly emitted. Therefore, it is difficult to reproduce the entire range.
　本発明は、簡易な構造で、音域の広い音、特に重低音を容易かつ確実に再生できるスピーカー装置を提供する。 The present invention provides a speaker device that has a simple structure and can easily and reliably reproduce sounds with a wide range, especially deep bass.
　本発明の一の態様であるスピーカー装置は、密閉された筐体と、筐体内を第１内部空間と第２内部空間とに区画する区画部と、筐体の第１内部空間側に設けられた少なくとも１つのスピーカーユニットとを備える。区画部は、少なくとも１つの貫通孔が設けられた基部と、内部が中空の球欠状又は楕円体球欠状であり、基部から第１内部空間側又は第２内部空間側に膨らみ、頂部に第１内部空間と第２内部空間とを連通する連通孔が設けられた少なくとも１つのドーム部とを有する。 A speaker device according to one aspect of the present invention includes a sealed casing, a partition section that divides the inside of the casing into a first internal space and a second internal space, and a section provided on the first internal space side of the casing. and at least one speaker unit. The partition has a base provided with at least one through hole, a hollow spherical shape or an ellipsoidal spherical shape, and bulges from the base toward the first internal space or the second internal space, and has a top portion. It has at least one dome portion provided with a communication hole that communicates the first internal space and the second internal space.
　少なくとも１つのドーム部には、連通孔の位置から第１内部空間側及び第２内部空間側の少なくとも一方に突出するように延びる第１筒状部が設けられている。第１筒状部は、一端が第１内部空間に開口し、他端が第２内部空間に開口している。基部には、少なくとも１つの貫通孔の位置から少なくとも第１内部空間側に突出するように延びる第２筒状部が設けられている。第２筒状部は、一端が第２内部空間に開口し、他端が閉塞されている。 At least one dome portion is provided with a first cylindrical portion that extends from the position of the communication hole so as to protrude toward at least one of the first internal space side and the second internal space side. One end of the first cylindrical portion opens into the first internal space, and the other end opens into the second internal space. The base is provided with a second cylindrical portion that extends from the position of the at least one through hole so as to protrude toward at least the first internal space. The second cylindrical portion has one end open to the second internal space and the other end closed.
　上記スピーカー装置によれば、区画部は、基部とドーム部とを有する。ドーム部には、第１筒状部が設けられている。基部には、第２筒状部が設けられている。筐体内を第１内部空間と第２内部空間とに区画する区画部のドーム部、ドーム部の連通孔を介して第１内部空間と第２内部空間とを連通する第１筒状部、第２内部空間から繋がる第２筒状部により、簡易な構造でありながら、音域の広い音、特に重低音を容易かつ確実に再生できる。 According to the above speaker device, the partition portion includes a base portion and a dome portion. The dome portion is provided with a first cylindrical portion. A second cylindrical portion is provided at the base. A dome part of the partition part that divides the inside of the casing into a first internal space and a second internal space, a first cylindrical part that communicates the first internal space and the second internal space via a communication hole in the dome part, and The second cylindrical portion connected from the second internal space allows for easy and reliable reproduction of a wide range of sounds, especially deep bass sounds, despite the simple structure.
　そのため、例えば、１つのスピーカーユニットで、音域の広い音を再生できる。すなわち、全ての音域を１つのスピーカーユニットでまかなうフルレンジスピーカー装置を実現できる。これにより、従来のように、広い音域の音を再生するために複数のスピーカーユニット（ウーハー、スコーカー、ツイーター等）を備えたマルチウェイ方式を採用する必要がなくなる。 Therefore, for example, a single speaker unit can reproduce sounds with a wide range of sounds. In other words, it is possible to realize a full-range speaker device that covers the entire sound range with one speaker unit. This eliminates the need for conventional multiway systems that include multiple speaker units (woofers, squawkers, tweeters, etc.) to reproduce a wide range of sounds.
　上記スピーカー装置において、第１筒状部は、少なくとも１つのドーム部の連通孔の位置から第１内部空間側及び第２内部空間側に突出するように延び、連通孔を挿通して設けられていてもよい。この場合には、第１筒状部により、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 In the speaker device, the first cylindrical portion extends from the position of the communication hole of the at least one dome portion to protrude toward the first internal space and the second internal space, and is provided through the communication hole. It's okay. In this case, the first cylindrical portion makes it possible to more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
　また、第２筒状部は、基部の少なくとも１つの貫通孔の位置から第１内部空間側及び第２内部空間側に突出するように延び、少なくとも１つの貫通孔を挿通して設けられていてもよい。この場合には、第２筒状部により、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 The second cylindrical portion extends from the position of the at least one through hole in the base to the first internal space side and the second internal space side, and is provided so as to be inserted through the at least one through hole. Good too. In this case, the second cylindrical portion makes it possible to more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
　また、第２筒状部は、他端が筐体の第１内部空間側の内壁面によって閉塞されていてもよい。この場合には、第２筒状部の内部容積を十分に確保することができ、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 Further, the other end of the second cylindrical portion may be closed by the inner wall surface of the casing on the first internal space side. In this case, a sufficient internal volume of the second cylindrical portion can be ensured, and a wide range of sounds, especially deep bass sounds, can be reproduced more easily and reliably.
　また、区画部の少なくとも１つのドーム部は、内部が中空の半球状であってもよい。この場合には、ドーム部の形状（ドーム形状）により、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 Furthermore, at least one dome portion of the partition portion may have a hemispherical shape with a hollow interior. In this case, due to the shape of the dome portion (dome shape), it is possible to reproduce sounds with a wide range, especially deep bass sounds, even more easily and reliably.
第１実施形態のスピーカー装置を示す斜視図である。FIG. 1 is a perspective view showing a speaker device according to a first embodiment. 第１実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 2 is a cross-sectional explanatory diagram showing the structure of the speaker device according to the first embodiment. 図２のＡ―Ａ線断面図である。FIG. 3 is a sectional view taken along the line AA in FIG. 2; 第１実施形態のスピーカー装置における区画部のドーム部を示す斜視図である。FIG. 3 is a perspective view showing a dome portion of a partition in the speaker device of the first embodiment. 第１実施形態のスピーカー装置における区画部のドーム部を示す断面図である。FIG. 2 is a cross-sectional view showing a dome portion of a partition in the speaker device of the first embodiment. 第２実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a second embodiment. 第２実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a second embodiment. 第３実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a third embodiment. 第４実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a fourth embodiment. 第５実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a fifth embodiment. 第６実施形態のスピーカー装置における区画部のドーム部を示す断面図である。FIG. 7 is a cross-sectional view showing a dome portion of a partition in a speaker device according to a sixth embodiment. 第６実施形態のスピーカー装置における区画部のドーム部を示す断面図である。FIG. 7 is a cross-sectional view showing a dome portion of a partition in a speaker device according to a sixth embodiment. 第７実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a seventh embodiment. 第８実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to an eighth embodiment. 第９実施形態のスピーカー装置の構造を示す断面説明図である。FIG. 7 is a cross-sectional explanatory diagram showing the structure of a speaker device according to a ninth embodiment.
　以下、本発明の実施形態を図面と共に説明する。
　（第１実施形態）
　図１に示すように、本実施形態のスピーカー装置１は、エンクロージャー（筐体）２と、スピーカーユニット３とを備えている。なお、以下の説明では、前後左右上下等の方向を用いて説明するが、あくまでも説明の便宜上の表現であり、特に限定されるものではない。 Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the speaker device 1 of this embodiment includes an enclosure (casing) 2 and a speaker unit 3. Note that in the following description, directions such as front, back, left, right, top and bottom will be used, but this is merely an expression for convenience of explanation and is not particularly limited.
　図１、図２に示すように、エンクロージャー２は、直方体形状である。エンクロージャー２は、前面部２１、後面部２２、左面部２３、右面部２４、上面部２５及び下面部２６を有する。前面部２１の下部には、円形状の開口部２１１が設けられている。前面部２１の開口部２１１には、スピーカーユニット３が前面部２１の開口部２１１を塞ぐように取り付けられている。エンクロージャー２は、閉じられた内部空間２０を有する。 As shown in FIGS. 1 and 2, the enclosure 2 has a rectangular parallelepiped shape. The enclosure 2 has a front part 21 , a rear part 22 , a left part 23 , a right part 24 , an upper part 25 , and a lower part 26 . A circular opening 211 is provided at the bottom of the front portion 21 . The speaker unit 3 is attached to the opening 211 of the front section 21 so as to close the opening 211 of the front section 21 . The enclosure 2 has a closed internal space 20.
　エンクロージャー２の材質は一般的な合板である。エンクロージャー２に用いられる材料はこれに限定されるものではなく、例えば、ブビンガ等の木材、中密度繊維板（ＭＤＦ）、樹脂、金属等の各種材料を用いることができる。また、エンクロージャー２の内容積は適宜設定することができる。エンクロージャー２の内容積を小さくすれば、エンクロージャー２、さらにはスピーカー装置１全体の小型化を図ることができる。 The material of the enclosure 2 is general plywood. The material used for the enclosure 2 is not limited to this, and various materials such as wood such as bubinga, medium density fiberboard (MDF), resin, and metal can be used. Further, the internal volume of the enclosure 2 can be set as appropriate. By reducing the internal volume of the enclosure 2, it is possible to downsize the enclosure 2 and even the speaker device 1 as a whole.
　スピーカーユニット３は、電気信号を振動に変換して音を出す方式の従来公知のスピーカーユニットであり、振動板等を備えている。スピーカーユニット３は、図示を省略したが、ケーブル等を介してアンプやプレーヤーに接続されている。スピーカーユニット３は、コーン型スピーカーである。スピーカーユニット３としては、コーン型スピーカー以外にも、例えばドーム型スピーカー、ホーン型スピーカー等の各種スピーカーユニットを用いることができる。 The speaker unit 3 is a conventionally known speaker unit that converts electrical signals into vibrations to produce sound, and includes a diaphragm and the like. Although not shown, the speaker unit 3 is connected to an amplifier or a player via a cable or the like. The speaker unit 3 is a cone-shaped speaker. As the speaker unit 3, in addition to the cone-shaped speaker, various speaker units such as a dome-shaped speaker and a horn-shaped speaker can be used.
　スピーカーユニット３は、前面部２１の内壁面にネジ等を用いて固定されている。なお、スピーカーユニット３は、前面部２１の外壁面に固定するようにしてもよい。スピーカーユニット３をエンクロージャー２に対して十分に固定することにより、スピーカーユニット３のねじれ等を抑制し、振動板の安定した作動を確保することができる。 The speaker unit 3 is fixed to the inner wall surface of the front part 21 using screws or the like. Note that the speaker unit 3 may be fixed to the outer wall surface of the front section 21. By sufficiently fixing the speaker unit 3 to the enclosure 2, it is possible to suppress twisting of the speaker unit 3 and ensure stable operation of the diaphragm.
　図２、図３に示すように、エンクロージャー２内には、エンクロージャー２の内部空間２０を２つの空間（第１内部空間２０１、第２内部空間２０２）に区画する区画部４が設けられている。区画部４は、基部４１と、基部４１に取り付けられたドーム部４２とを有する。 As shown in FIGS. 2 and 3, a partition 4 is provided in the enclosure 2 to partition the internal space 20 of the enclosure 2 into two spaces (a first internal space 201 and a second internal space 202). . The partition part 4 has a base part 41 and a dome part 42 attached to the base part 41.
　基部４１は、平板状に形成されている。基部４１は、エンクロージャー２の上面部２５及び下面部２６に対して平行となる向きに配置されている。基部４１の４つの辺部は、エンクロージャー２の前面部２１、後面部２２、左面部２３及び右面部２４に固定されている。基部４１の前部には、ドーム部４２を取り付けるための円形状の取付開口部４１１が設けられている。基部４１の後部には、円形状の貫通孔４１２が設けられている。 The base portion 41 is formed into a flat plate shape. The base portion 41 is arranged parallel to the upper surface portion 25 and the lower surface portion 26 of the enclosure 2 . The four sides of the base 41 are fixed to the front surface 21 , the rear surface 22 , the left surface 23 , and the right surface 24 of the enclosure 2 . A circular attachment opening 411 for attaching the dome portion 42 is provided at the front portion of the base portion 41 . A circular through hole 412 is provided at the rear of the base 41 .
　図４、図５に示すように、ドーム部４２は、内部が中空の球欠状である。ここで、球欠とは、球を一つの平面で切り取った形状をいう。本実施形態では、ドーム部４２は、内部が中空の球体をちょうど半分に切り分けた半球状（半球ドーム形状）である。 As shown in FIGS. 4 and 5, the dome portion 42 has a hollow spherical shape inside. Here, the term "ball-cut" refers to the shape of a sphere cut out in one plane. In this embodiment, the dome portion 42 has a hemispherical shape (hemispherical dome shape), which is obtained by cutting a hollow sphere into exactly half.
　ドーム部４２の外表面４２１は、凸状の球面により形成されている。ドーム部４２の内表面４２２は、凹状の球面により形成されている。ドーム部４２の高さは直径の半分（半径と同じ）である。ドーム部４２の直径や高さは適宜変更することができる。ドーム部４２の頂部４２３には、円形状の連通孔４２４が設けられている。 The outer surface 421 of the dome portion 42 is formed of a convex spherical surface. The inner surface 422 of the dome portion 42 is formed of a concave spherical surface. The height of the dome portion 42 is half the diameter (same as the radius). The diameter and height of the dome portion 42 can be changed as appropriate. A circular communication hole 424 is provided in the top portion 423 of the dome portion 42 .
　図２、図３に示すように、基部４１の上面において、取付開口部４１１の外縁部には、半球状のドーム部４２が取り付けられている。ドーム部４２は、頂部４２３側（凸側）が上向きとなるように配置されている。ドーム部４２は、基部４１から上側に膨らむように設けられている。 As shown in FIGS. 2 and 3, a hemispherical dome portion 42 is attached to the outer edge of the attachment opening 411 on the upper surface of the base 41. The dome portion 42 is arranged such that the top portion 423 side (convex side) faces upward. The dome portion 42 is provided so as to bulge upward from the base portion 41.
　区画部４において、基部４１の材質は一般的な合板である。基部４１の材質は、これに限定されるものではなく、例えば、木材、樹脂、ステンレス等の金属等の各種材質を用いることができる。また、ドーム部４２の材質はアクリル樹脂である。ドーム部４２の材質は、これに限定されるものではなく、例えば、ポリプロピレン（ＰＰ）等の樹脂、金属等の各種材質を用いることができる。 In the partition section 4, the material of the base section 41 is general plywood. The material of the base 41 is not limited to this, and various materials such as wood, resin, and metal such as stainless steel can be used, for example. Further, the material of the dome portion 42 is acrylic resin. The material of the dome portion 42 is not limited to this, and various materials such as resin such as polypropylene (PP), metal, etc. can be used, for example.
　区画部４は、エンクロージャー２内の内部空間２０を第１内部空間２０１と第２内部空間２０２とに区画する。エンクロージャー２内には、区画部４よりも下側の第１内部空間２０１と、区画部４よりも上側の第２内部空間２０２とが形成されている。したがって、ドーム部４２は、基部４１から第２内部空間２０２側に膨らむように設けられている。 The partitioning section 4 partitions the internal space 20 within the enclosure 2 into a first internal space 201 and a second internal space 202. Inside the enclosure 2, a first internal space 201 below the partition 4 and a second internal space 202 above the partition 4 are formed. Therefore, the dome portion 42 is provided so as to bulge from the base portion 41 toward the second internal space 202 side.
　区画部４は、スピーカーユニット３よりも上側であって、エンクロージャー２内における上下方向の中間位置よりも上側に配置されている。したがって、スピーカーユニット３は、エンクロージャー２の第１内部空間２０１側に設けられている。区画部４の位置は、エンクロージャー２内において適宜変更することができる。区画部４の位置を変えることで、エンクロージャー２内の２つの空間（第１内部空間２０１、第２内部空間２０２）の内部容積を調整することができ、重低音の音圧の調整が可能となる。 The partition section 4 is disposed above the speaker unit 3 and above an intermediate position in the vertical direction within the enclosure 2. Therefore, the speaker unit 3 is provided on the first internal space 201 side of the enclosure 2. The position of the partition 4 can be changed as appropriate within the enclosure 2. By changing the position of the partition 4, the internal volume of the two spaces (first internal space 201, second internal space 202) in the enclosure 2 can be adjusted, and the sound pressure of heavy bass can be adjusted. Become.
　区画部４のドーム部４２には、連通孔４２４の位置から第１内部空間２０１側及び第２内部空間２０２側に突出するように上下方向に延びる第１筒状部５１が設けられている。第１筒状部５１は、軸方向に直交する断面が円形の円筒状である。第１筒状部５１の外径は、ドーム部４２の連通孔４２４の内径と同じである。 The dome part 42 of the partition part 4 is provided with a first cylindrical part 51 that extends in the vertical direction so as to protrude from the position of the communication hole 424 to the first internal space 201 side and the second internal space 202 side. The first cylindrical portion 51 has a cylindrical shape with a circular cross section perpendicular to the axial direction. The outer diameter of the first cylindrical portion 51 is the same as the inner diameter of the communication hole 424 of the dome portion 42 .
　第１筒状部５１は、ドーム部４２の連通孔４２４を挿通して設けられている。第１筒状部５１は、連通孔４２４を介してドーム部４２を貫通するように設けられている。第１筒状部５１は、下端（一端）５１１が第１内部空間２０１に開口し、上端（他端）５１２が第２内部空間２０２に開口している。 The first cylindrical portion 51 is inserted through the communication hole 424 of the dome portion 42 . The first cylindrical portion 51 is provided so as to penetrate the dome portion 42 via the communication hole 424. The first cylindrical portion 51 has a lower end (one end) 511 opening into the first internal space 201 and an upper end (other end) 512 opening into the second internal space 202 .
　エンクロージャー２の第１内部空間２０１と第２内部空間２０２とは、区画部４のドーム部４２の連通孔４２４及び第１筒状部５１を介して連通している。すなわち、区画部４のドーム部４２の連通孔４２４に挿通された第１筒状部５１によって、エンクロージャー２の第１内部空間２０１と第２内部空間２０２とが連通している。したがって、エンクロージャー２内（内部空間２０）では、スピーカーユニット３の背面（後面）から発せられた音により生じる空気の流れが、ドーム部４２及びドーム部４２に設けられた第１筒状部５１を介して第１内部空間２０１と第２内部空間２０２との間に生じる。 The first internal space 201 and the second internal space 202 of the enclosure 2 communicate with each other via the communication hole 424 of the dome part 42 of the partition part 4 and the first cylindrical part 51. That is, the first internal space 201 and the second internal space 202 of the enclosure 2 are in communication with each other through the first cylindrical part 51 inserted into the communication hole 424 of the dome part 42 of the partition part 4 . Therefore, in the enclosure 2 (internal space 20), the air flow generated by the sound emitted from the back surface (rear surface) of the speaker unit 3 moves through the dome portion 42 and the first cylindrical portion 51 provided in the dome portion 42. It is created between the first internal space 201 and the second internal space 202 via.
　区画部４の基部４１には、貫通孔４１２の位置から第１内部空間２０１側及び第２内部空間２０２側に突出するように上下方向に延びる第２筒状部５２が設けられている。第２筒状部５２は、軸方向に直交する断面が円形の円筒状である。第２筒状部５２の外径は、基部４１の貫通孔４１２の内径と同じである。 A second cylindrical portion 52 is provided at the base 41 of the partitioning portion 4 and extends in the vertical direction so as to protrude from the position of the through hole 412 toward the first internal space 201 and the second internal space 202. The second cylindrical portion 52 has a cylindrical shape with a circular cross section perpendicular to the axial direction. The outer diameter of the second cylindrical portion 52 is the same as the inner diameter of the through hole 412 of the base portion 41.
　第２筒状部５２は、基部４１の貫通孔４１２を挿通して設けられている。第２筒状部５２は、貫通孔４１２を介して基部４１を貫通するように設けられている。第２筒状部５１は、上端（一端）５２１が第２内部空間２０２に開口し、下端（他端）５２２が閉塞されている。第２筒状部５２の下端５２２は、エンクロージャー２の下面部２６まで延びており、下面部２６の内壁面によって閉塞されている。 The second cylindrical portion 52 is provided to be inserted through the through hole 412 of the base portion 41. The second cylindrical portion 52 is provided so as to penetrate the base portion 41 via the through hole 412. The second cylindrical portion 51 has an upper end (one end) 521 open to the second internal space 202 and a lower end (other end) 522 closed. The lower end 522 of the second cylindrical portion 52 extends to the lower surface portion 26 of the enclosure 2 and is closed by the inner wall surface of the lower surface portion 26 .
　第２筒状部５２は、基部４１の貫通孔４１２の位置から第１内部空間２０１側に突出するように下方に延びている分だけ、第１内部空間２０１に入り込むように設けられている。エンクロージャー２の第２内部空間２０２は、第２筒状部５２の上端５２１の開口部分を介して第２筒状部５２内の空間に連通している。そして、エンクロージャー２内（内部空間２０）では、スピーカーユニット３の背面（後面）から発せられた音により生じる空気の流れが、第２内部空間２０２と第２内部空間２０２から繋がる第２筒状部５２内の空間との間に生じる。 The second cylindrical portion 52 is provided so as to enter into the first internal space 201 by an amount extending downward from the position of the through hole 412 of the base 41 so as to protrude toward the first internal space 201 side. The second internal space 202 of the enclosure 2 communicates with the space inside the second cylindrical portion 52 via the opening portion of the upper end 521 of the second cylindrical portion 52 . In the enclosure 2 (internal space 20), the air flow generated by the sound emitted from the back surface (rear surface) of the speaker unit 3 is directed to a second cylindrical portion connecting the second internal space 202 and the second internal space 202. This occurs between the space within 52.
　第１筒状部５１及び第２筒状部５２の材質は、硬質のポリ塩化ビニル（ＰＶＣ）である。第１筒状部５１及び第２筒状部５２の材質は、これに限定されるものではなく、例えば、木材、樹脂、金属等の各種材質を用いることができる。また、第１筒状部５１及び第２筒状部５２の材質は同じであってもよいし、異なっていてもよい。 The material of the first cylindrical portion 51 and the second cylindrical portion 52 is hard polyvinyl chloride (PVC). The material of the first cylindrical part 51 and the second cylindrical part 52 is not limited to this, and various materials such as wood, resin, metal, etc. can be used, for example. Moreover, the materials of the first cylindrical portion 51 and the second cylindrical portion 52 may be the same or different.
　次に、本実施形態のスピーカー装置１における作用効果について説明する。
　本実施形態のスピーカー装置１によれば、区画部４は、基部４１とドーム部４２とを有する。ドーム部４２には、第１筒状部５１が設けられている。基部４１には、第２筒状部５２が設けられている。エンクロージャー２内を第１内部空間２０１と第２内部空間２０２とに区画する区画部４のドーム部４２、ドーム部４２の連通孔４２４を介して第１内部空間２０１と第２内部空間２０２とを連通する第１筒状部５１、第２内部空間２０２から繋がる第２筒状部５２により、簡易な構造でありながら、音域の広い音、特に重低音を容易かつ確実に再生できる。 Next, the effects of the speaker device 1 of this embodiment will be explained.
According to the speaker device 1 of this embodiment, the partition section 4 has a base section 41 and a dome section 42 . The dome portion 42 is provided with a first cylindrical portion 51 . The base portion 41 is provided with a second cylindrical portion 52 . The first internal space 201 and the second internal space 202 are connected to each other through the dome part 42 of the partition part 4 that divides the inside of the enclosure 2 into a first internal space 201 and a second internal space 202, and a communication hole 424 of the dome part 42. With the first cylindrical part 51 communicating with the second cylindrical part 52 connected from the second internal space 202, it is possible to easily and reliably reproduce sounds in a wide range, especially deep bass sounds, despite the simple structure.
　これは、エンクロージャー２の第１内部空間２０１側に設けられたスピーカーユニット３の背面（後面）から発せられた音により生じる空気の流れが、区画部４のドーム部４２及びドーム部４２に設けられた第１筒状部５１を介して第１内部空間２０１と第２内部空間２０２との間に生じ、さらに第２内部空間２０２と第２内部空間２０２から繋がる第２筒状部５２内の空間との間に生じるためと考えられる。 This is because the air flow generated by the sound emitted from the back surface (rear surface) of the speaker unit 3 provided on the first internal space 201 side of the enclosure 2 is provided in the dome section 42 of the partition section 4 and the dome section 42. A space within the second cylindrical portion 52 that is created between the first internal space 201 and the second internal space 202 via the first cylindrical portion 51 and further connected from the second internal space 202 to the second internal space 202. This is thought to be due to the occurrence between
　そのため、例えば、本実施形態のように１つのスピーカーユニット３で、音域の広い音を再生できる。すなわち、本実施形態のスピーカー装置１は、全ての音域を１つのスピーカーユニットでまかなうフルレンジスピーカー装置を実現できる。これにより、従来のように、広い音域の音を再生するために複数のスピーカーユニット（ウーハー、スコーカー、ツイーター等）を備えたマルチウェイ方式を採用する必要がなくなる。また、スピーカーユニット３が１つであるため、スピーカー装置１全体の小型化を図ることができる。 Therefore, for example, as in this embodiment, one speaker unit 3 can reproduce sounds with a wide range. That is, the speaker device 1 of this embodiment can realize a full-range speaker device that covers the entire sound range with one speaker unit. This eliminates the need for conventional multiway systems that include multiple speaker units (woofers, squawkers, tweeters, etc.) to reproduce a wide range of sounds. Furthermore, since there is only one speaker unit 3, the overall size of the speaker device 1 can be reduced.
　本実施形態のスピーカー装置１において、第１筒状部５１は、ドーム部４２の連通孔４２４の位置から第１内部空間２０１側及び第２内部空間２０２側に突出するように延び、連通孔４２４を挿通して設けられている。そのため、第１筒状部５１により、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 In the speaker device 1 of the present embodiment, the first cylindrical portion 51 extends from the position of the communication hole 424 of the dome portion 42 so as to protrude toward the first internal space 201 side and the second internal space 202 side. It is installed by inserting it through. Therefore, the first cylindrical portion 51 can more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
　また、第２筒状部５２は、基部４１の貫通孔４１２の位置から第１内部空間２０１側及び第２内部空間２０２側に突出するように延び、貫通孔４１２を挿通して設けられている。そのため、第２筒状部５２により、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 Further, the second cylindrical portion 52 extends from the position of the through hole 412 of the base portion 41 so as to protrude toward the first internal space 201 side and the second internal space 202 side, and is provided by being inserted through the through hole 412. . Therefore, the second cylindrical portion 52 can more easily and reliably reproduce sounds with a wide range, especially deep bass sounds.
　また、第２筒状部５２は、下端５２２がエンクロージャー２の第１内部空間２０１側の内壁面である下面部２６の内壁面によって閉塞されている。そのため、第２筒状部５２の内部容積を十分に確保することができ、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。 Further, the lower end 522 of the second cylindrical portion 52 is closed by the inner wall surface of the lower surface portion 26, which is the inner wall surface on the first internal space 201 side of the enclosure 2. Therefore, a sufficient internal volume of the second cylindrical portion 52 can be secured, and sounds with a wide range, especially deep bass, can be reproduced more easily and reliably.
　また、区画部４のドーム部４２は、内部が中空の半球状である。そのため、ドーム部４２の形状（ドーム形状）により、音域の広い音、特に重低音をより一層容易かつ確実に再生できる。また、ドーム部４２の連通孔４２４により、再生される音の解像度を上げることができる。 Further, the dome portion 42 of the partition portion 4 has a hollow hemispherical shape inside. Therefore, due to the shape of the dome portion 42 (dome shape), it is possible to more easily and reliably reproduce sounds with a wide sound range, especially deep bass sounds. Furthermore, the communication hole 424 of the dome portion 42 allows the resolution of the reproduced sound to be increased.
　（第２実施形態）
　本実施形態は、図６、図７に示すように、スピーカー装置１において、第１筒状部５１の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。 (Second embodiment)
This embodiment is an example in which the configuration of the first cylindrical portion 51 in the speaker device 1 is changed, as shown in FIGS. 6 and 7. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
　図６に示すように、区画部４のドーム部４２には、連通孔４２４の位置から第１内部空間２０１側に突出するように下方に延びる第１筒状部５１が設けられている。第１筒状部５１の上端部は、ドーム部４２の連通孔４２４に挿入されている。第１筒状部５１の上端５１２は、ドーム部４２の連通孔４２４と同じ位置にあり、第２内部空間２０２に開口している。 As shown in FIG. 6, the dome portion 42 of the partition portion 4 is provided with a first cylindrical portion 51 that extends downward from the position of the communication hole 424 so as to protrude toward the first internal space 201 side. The upper end portion of the first cylindrical portion 51 is inserted into the communication hole 424 of the dome portion 42 . The upper end 512 of the first cylindrical portion 51 is located at the same position as the communication hole 424 of the dome portion 42 and opens into the second internal space 202 .
　図７に示すように、区画部４のドーム部４２には、連通孔４２４の位置から第２内部空間２０２側に突出するように上方に延びる第１筒状部５１が設けられている。第１筒状部５１の下端部は、ドーム部４２の連通孔４２４に挿入されている。第１筒状部５１の下端５１１は、ドーム部４２の連通孔４２４と同じ位置にあり、第１内部空間２０１に開口している。 As shown in FIG. 7, the dome portion 42 of the partition portion 4 is provided with a first cylindrical portion 51 that extends upward from the position of the communication hole 424 so as to protrude toward the second internal space 202 side. The lower end portion of the first cylindrical portion 51 is inserted into the communication hole 424 of the dome portion 42 . The lower end 511 of the first cylindrical portion 51 is located at the same position as the communication hole 424 of the dome portion 42 and opens into the first internal space 201 .
　（第３実施形態）
　本実施形態は、図８に示すように、スピーカー装置１において、第２筒状部５２の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。 (Third embodiment)
This embodiment is an example in which the configuration of the second cylindrical portion 52 is changed in the speaker device 1, as shown in FIG. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
　図８に示すように、第２筒状部５２は、区画部４の基部４１の貫通孔４１２の位置から、基部４１とエンクロージャー２の下面部２６との間の位置まで、第１内部空間２０１側に突出するように下方に延びている。第２筒状部５２の下端５２２は、基部４１とエンクロージャー２の下面部２６との間に位置している。第２筒状部５２の下端５２２は、閉塞部５２３によって閉塞されている。 As shown in FIG. 8, the second cylindrical part 52 extends from the position of the through hole 412 of the base 41 of the partition part 4 to the position between the base 41 and the lower surface part 26 of the enclosure 2 in the first internal space 201. It extends downward so as to protrude to the side. A lower end 522 of the second cylindrical portion 52 is located between the base portion 41 and the lower surface portion 26 of the enclosure 2. The lower end 522 of the second cylindrical portion 52 is closed by a closing portion 523.
　（第４実施形態）
　本実施形態は、図９に示すように、スピーカー装置１において、第２筒状部５２の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。 (Fourth embodiment)
This embodiment is an example in which the configuration of the second cylindrical portion 52 in the speaker device 1 is changed, as shown in FIG. 9 . Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
　図９に示すように、区画部４の基部４１には、貫通孔４１２の位置から第１内部空間２０１側に突出するように下方に延びる第２筒状部５２が設けられている。第２筒状部５２の上端部は、基部４１の貫通孔４１２に挿入されている。第２筒状部５２の上端５２１は、基部４１の貫通孔４１２と同じ位置にあり、第２内部空間２０２に開口している。 As shown in FIG. 9, the base 41 of the partitioning portion 4 is provided with a second cylindrical portion 52 that extends downward from the position of the through hole 412 so as to protrude toward the first internal space 201 side. The upper end portion of the second cylindrical portion 52 is inserted into the through hole 412 of the base portion 41 . The upper end 521 of the second cylindrical portion 52 is located at the same position as the through hole 412 of the base portion 41 and opens into the second internal space 202 .
　（第５実施形態）
　本実施形態は、図１０に示すように、スピーカー装置１において、区画部４のドーム部４２の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。 (Fifth embodiment)
This embodiment is an example in which the configuration of the dome section 42 of the partition section 4 in the speaker device 1 is changed, as shown in FIG. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
　図１０に示すように、区画部４の基部４１の下面において、取付開口部４１１の外縁部には、半球状のドーム部４２が取り付けられている。ドーム部４２は、頂部４２３側（凸側）が下向きとなるように配置されている。すなわち、ドーム部４２は、基部４１から第１内部空間２０１側に膨らむように設けられている。 As shown in FIG. 10, a hemispherical dome portion 42 is attached to the outer edge of the attachment opening 411 on the lower surface of the base 41 of the partition 4. The dome portion 42 is arranged such that the top portion 423 side (convex side) faces downward. That is, the dome portion 42 is provided so as to bulge from the base portion 41 toward the first internal space 201 side.
　（第６実施形態）
　本実施形態は、図１１、図１２に示すように、スピーカー装置１において、区画部４のドーム部４２の形状を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。 (Sixth embodiment)
This embodiment is an example in which the shape of the dome part 42 of the partition part 4 in the speaker device 1 is changed, as shown in FIGS. 11 and 12. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
　図１１、図１２に示すように、区画部４のドーム部４２は、内部が中空の楕円体球欠状である。ここで、楕円体球欠状とは、楕円体を一つの平面で切り取った形状をいう。本実施形態では、ドーム部４２は、内部が中空の回転楕円体をちょうど半分に切り分けた半楕円体状（半楕円体ドーム形状）である。 As shown in FIGS. 11 and 12, the dome portion 42 of the partition portion 4 has a hollow ellipsoidal shape. Here, the ellipsoidal shape refers to a shape obtained by cutting an ellipsoid along one plane. In this embodiment, the dome portion 42 has a semi-ellipsoidal shape (semi-ellipsoidal dome shape) which is obtained by cutting a hollow spheroidal body into exactly half.
　ドーム部４２の外表面４２１は、凸状の楕円面により形成されている。ドーム部４２の内表面４２２は、凹状の楕円面により形成されている。ドーム部４２の頂部４２３には、円形状の連通孔４２４が設けられている。 The outer surface 421 of the dome portion 42 is formed of a convex elliptical surface. The inner surface 422 of the dome portion 42 is formed of a concave elliptical surface. A circular communication hole 424 is provided in the top portion 423 of the dome portion 42 .
　図１１のドーム部４２は、回転楕円体をその長軸に垂直な平面で半分に切り取った形状である。ドーム部４２の高さは長軸の半分（長軸半径）である。図１２のドーム部４２は、回転楕円体をその短軸に垂直な平面で切り取った形状である。ドーム部４２の高さは短軸の半分（短軸半径）である。 The dome portion 42 in FIG. 11 has a shape obtained by cutting a spheroid in half along a plane perpendicular to its long axis. The height of the dome portion 42 is half the major axis (major axis radius). The dome portion 42 in FIG. 12 has a shape obtained by cutting a spheroid along a plane perpendicular to its minor axis. The height of the dome portion 42 is half the short axis (short axis radius).
　（第７実施形態）
　本実施形態は、図１３に示すように、スピーカー装置１において、スピーカーユニット３周辺の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。 (Seventh embodiment)
This embodiment is an example in which the configuration around the speaker unit 3 in the speaker device 1 is changed, as shown in FIG. 13. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted.
　図１３に示すように、スピーカーユニット３とエンクロージャー２の前面部２１との間には、厚みを有する平板状の中間部材２７が配置されている。中間部材２７には、厚み方向に貫通して形成され、前方に向かって徐々に内径が小さくなる略半球状（半球台状）の空間を有するホール部２７１が設けられている。 As shown in FIG. 13, a thick flat plate-shaped intermediate member 27 is arranged between the speaker unit 3 and the front part 21 of the enclosure 2. The intermediate member 27 is provided with a hole portion 271 that is formed through the hole portion 271 in the thickness direction and has a substantially hemispherical (hemispherical trapezoidal) space whose inner diameter gradually decreases toward the front.
　中間部材２７は、ホール部２７１が前面部２１の開口部２１１に連通するように、前面部２１の内壁面に固定されている。前面部２１の開口部２１１は、前方に向かって徐々に内径が大きくなる断面が円形のホーン形状になっている。スピーカーユニット３は、ネジ等を用いて中間部材２７の後面に固定されている。 The intermediate member 27 is fixed to the inner wall surface of the front part 21 so that the hole part 271 communicates with the opening 211 of the front part 21. The opening 211 of the front portion 21 has a horn shape with a circular cross section whose inner diameter gradually increases toward the front. The speaker unit 3 is fixed to the rear surface of the intermediate member 27 using screws or the like.
　スピーカーユニット３の前面には、中間部材２７のホール部２７１及び前面部２１の開口部２１１により、スピーカーユニット３の前面から発せられる音の通路が形成される。このような構成により、略半球状の空間であるホール部２７１内において音のバランスを整えることができる。また、音の歪み等も軽減される。 On the front surface of the speaker unit 3, a path for sound emitted from the front surface of the speaker unit 3 is formed by the hole portion 271 of the intermediate member 27 and the opening portion 211 of the front surface portion 21. With this configuration, it is possible to balance the sound within the hall section 271, which is a substantially hemispherical space. In addition, distortion of the sound is also reduced.
　（第８実施形態）
　本実施形態は、図１４に示すように、スピーカー装置１において、第２筒状部５２の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。また、図１４は、上述した図３と同様の位置の断面図である。 (Eighth embodiment)
This embodiment is an example in which the configuration of the second cylindrical portion 52 in the speaker device 1 is changed, as shown in FIG. 14. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted. Further, FIG. 14 is a sectional view at the same position as FIG. 3 described above.
　図１４に示すように、基部４１の後部には、円形状の貫通孔４１２が２つ設けられている。２つの貫通孔４１２は、左右方向に並んで配置されている。基部４１には、各貫通孔４１２の位置から第１内部空間２０１側及び第２内部空間２０２側に突出するように上下方向に延びる第２筒状部５２が２つ設けられている。各第２筒状部５２は、基部４１の貫通孔４１２を挿通して設けられている。各第２筒状部５２は、貫通孔４１２を介して基部４１を貫通するように設けられている。 As shown in FIG. 14, two circular through holes 412 are provided at the rear of the base 41. The two through holes 412 are arranged side by side in the left-right direction. The base portion 41 is provided with two second cylindrical portions 52 that extend in the vertical direction so as to protrude from the position of each through hole 412 to the first internal space 201 side and the second internal space 202 side. Each second cylindrical portion 52 is inserted through a through hole 412 of the base portion 41 . Each second cylindrical portion 52 is provided so as to penetrate through the base 41 via the through hole 412.
　（第９実施形態）
　本実施形態は、図１５に示すように、スピーカー装置１において、ドーム部４２及び第１筒状部５１の構成を変更した例である。なお、第１実施形態と同様の構成及び作用効果については説明を省略する。また、図１５は、上述した図３と同様の位置の断面図である。 (Ninth embodiment)
This embodiment is an example in which the configurations of the dome portion 42 and the first cylindrical portion 51 are changed in the speaker device 1, as shown in FIG. 15. Note that descriptions of the same configuration and effects as in the first embodiment will be omitted. Moreover, FIG. 15 is a sectional view at the same position as FIG. 3 described above.
　図１５に示すように、基部４１の前部には、円形状の取付開口部４１１が２つ設けられている。２つの取付開口部４１１は、左右方向に並んで配置されている。基部４１の上面には、各取付開口部４１１の外縁部に取り付けられた半球状のドーム部４２が２つ設けられている。 As shown in FIG. 15, two circular mounting openings 411 are provided at the front of the base 41. The two attachment openings 411 are arranged side by side in the left-right direction. Two hemispherical dome portions 42 are provided on the upper surface of the base portion 41 and attached to the outer edge of each attachment opening 411 .
　各ドーム部４２には、連通孔４２４の位置から第１内部空間２０１側及び第２内部空間２０２側に突出するように上下方向に延びる第１筒状部５１が設けられている。すなわち、区画部４には、第２筒状部５２が２つ設けられている。各第１筒状部５１は、ドーム部４２の連通孔４２４を挿通して設けられている。各第１筒状部５１は、連通孔４２４を介してドーム部４２を貫通するように設けられている。 Each dome portion 42 is provided with a first cylindrical portion 51 that extends in the vertical direction so as to protrude from the position of the communication hole 424 to the first internal space 201 side and the second internal space 202 side. That is, two second cylindrical parts 52 are provided in the partition part 4. Each first cylindrical portion 51 is provided to be inserted through the communication hole 424 of the dome portion 42 . Each first cylindrical portion 51 is provided so as to penetrate the dome portion 42 via the communication hole 424.
　（その他の実施形態）
　本発明は、上記実施形態に何ら限定されるものではなく、本発明を逸脱しない範囲において種々の態様で実施しうることはいうまでもない。 (Other embodiments)
It goes without saying that the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the scope of the present invention.
　（１）上記実施形態において、エンクロージャー（筐体）２の形状は、直方体形状としたが、これに限定されるものではない。例えば、円筒形状や立方形状等、内部空間２０を有する各種形状を採用することができる。 (1) In the above embodiment, the shape of the enclosure (casing) 2 is a rectangular parallelepiped, but it is not limited to this. For example, various shapes having the internal space 20, such as a cylindrical shape and a cubic shape, can be adopted.
　（２）上記実施形態において、スピーカーユニット３の数は１つであるが、これに限定されるものではない。なお、上述したように、全ての音域を１つのスピーカーユニットでまかなうフルレンジスピーカー装置を実現しようとすれば、スピーカーユニット３の数は１つであることが好ましい。 (2) In the above embodiment, the number of speaker units 3 is one, but it is not limited to this. Note that, as described above, in order to realize a full-range speaker device that covers the entire sound range with one speaker unit, it is preferable that the number of speaker units 3 is one.
　（３）上記実施形態において、区画部４のドーム部４２の形状は、内部が中空の半球状（半球ドーム形状）や半楕円体状（半楕円体ドーム形状）であるが、これらに限定されるものではない。例えば、ドーム部４２の高さがドーム部４２の半径よりも長い又は短い球欠状であってもよい。また、ドーム部４２の高さがドーム部４２の高さ方向の軸の半分（半軸）よりも長い又は短い楕円体球欠状であってもよい。 (3) In the above embodiment, the shape of the dome part 42 of the partition part 4 is a hollow hemispherical shape (hemispherical dome shape) or a semiellipsoidal shape (semiellipsoidal dome shape), but the shape is not limited to these. It's not something you can do. For example, the height of the dome portion 42 may be longer or shorter than the radius of the dome portion 42 . Further, the height of the dome portion 42 may be an ellipsoidal truncated shape that is longer or shorter than half (half axis) of the axis of the dome portion 42 in the height direction.
　（４）上記実施形態において、区画部４における基部４１とドーム部４２とを別体で構成したが、両者を一体的に構成してもよい。 (4) In the above embodiment, the base portion 41 and the dome portion 42 in the partition portion 4 are configured separately, but they may be configured integrally.
　（５）上記実施形態において、第１筒状部５１や第２筒状部５２は、軸方向に直交する断面が円形の円筒状としたが、これに限定されるものではなく、軸方向に直交する断面の形状が楕円形、三角形、四角形（正方形、長方形）、その他の多角形等である筒形状であってもよい。また、第１筒状部５１や第２筒状部５２の形状に応じて、区画部４におけるドーム部４２の連通孔４２４や基部４１の貫通孔４１２の形状を適宜変更してもよい。 (5) In the above embodiment, the first cylindrical portion 51 and the second cylindrical portion 52 have a cylindrical shape with a circular cross section orthogonal to the axial direction, but the shape is not limited to this. It may be a cylindrical shape in which orthogonal cross sections are elliptical, triangular, quadrilateral (square, rectangular), other polygons, or the like. Further, depending on the shapes of the first cylindrical portion 51 and the second cylindrical portion 52, the shapes of the communication hole 424 of the dome portion 42 and the through hole 412 of the base portion 41 in the partition portion 4 may be changed as appropriate.
　（６）上記実施形態において、区画部４のドーム部４２と第１筒状部５１とを別体で構成しているが、両者を一体的に構成してもよい。また、区画部４の基部４１と第２筒状部５２とを別体で構成しているが、両者を一体的に構成してもよい。 (6) In the above embodiment, the dome portion 42 and the first cylindrical portion 51 of the partition portion 4 are configured separately, but they may be configured integrally. Further, although the base portion 41 of the partition portion 4 and the second cylindrical portion 52 are configured separately, they may be configured integrally.
　（７）上記実施形態において、基部４１に第２筒状部５２を１つ設けたり、２つ設けたりしたが、３つ以上設けてもよい。 (7) In the above embodiments, one or two second cylindrical portions 52 are provided on the base 41, but three or more may be provided.
　（８）上記実施形態において、区画部４にドーム部４２を１つ設けたり、２つ設けたりしたが、３つ以上設けてもよい。また、ドーム部４２の数に合わせて、第１筒状部５１を１つ設けたり、２つ設けたりしたが、３つ以上設けてもよい。 (8) In the above embodiments, one or two dome portions 42 are provided in the partition portion 4, but three or more dome portions 42 may be provided. Further, in accordance with the number of dome portions 42, one or two first cylindrical portions 51 are provided, but three or more may be provided.
　（９）上記実施形態における１つの構成要素が有する機能を複数の構成要素として分散させたり、複数の構成要素が有する機能を１つの構成要素に統合したりしてもよい。また、上記実施形態の構成の一部を省略してもよい。また、上記実施形態の構成の少なくとも一部を、他の上記実施形態の構成に対して付加、置換等してもよい。なお、特許請求の範囲に記載の文言から特定される技術思想に含まれるあらゆる態様が本発明の実施形態である。 (9) The function of one component in the above embodiment may be distributed as multiple components, or the functions of multiple components may be integrated into one component. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above embodiment may be added to, replaced with, etc. in the configuration of other embodiments. Note that all aspects included in the technical idea specified from the words described in the claims are embodiments of the present invention.
　１…スピーカー装置、２…エンクロージャー（筐体）、３…スピーカーユニット、４…区画部、４１…基部、４２…ドーム部、５１…第１筒状部、５２…第２筒状部、２０１…第１内部空間、２０２…第２内部空間、４１２…貫通孔、４２３…頂部、４２４…連通孔、５１１…下端（第１筒状部の一端）、５１２…上端（第１筒状部の他端）、５２１…上端（第２筒状部の一端）、５２２…下端（第２筒状部の他端） DESCRIPTION OF SYMBOLS 1... Speaker device, 2... Enclosure (casing), 3... Speaker unit, 4... Division part, 41... Base, 42... Dome part, 51... First cylindrical part, 52... Second cylindrical part, 201... First internal space, 202... Second internal space, 412... Through hole, 423... Top, 424... Communication hole, 511... Lower end (one end of the first cylindrical part), 512... Upper end (other than the first cylindrical part) end), 521...upper end (one end of the second cylindrical part), 522...lower end (other end of the second cylindrical part)

Claims (5)

  1. 　密閉された筐体と、
    　前記筐体内を第１内部空間と第２内部空間とに区画する区画部と、
    　前記筐体の前記第１内部空間側に設けられた少なくとも１つのスピーカーユニットと、を備え、
    　前記区画部は、少なくとも１つの貫通孔が設けられた基部と、内部が中空の球欠状又は楕円体球欠状であり、前記基部から前記第１内部空間側又は前記第２内部空間側に膨らみ、頂部に前記第１内部空間と前記第２内部空間とを連通する連通孔が設けられた少なくとも１つのドーム部と、を有し、
    　前記少なくとも１つのドーム部には、前記連通孔の位置から前記第１内部空間側及び前記第２内部空間側の少なくとも一方に突出するように延びる第１筒状部が設けられ、
    　前記第１筒状部は、一端が前記第１内部空間に開口し、他端が前記第２内部空間に開口し、
    　前記基部には、前記少なくとも１つの貫通孔の位置から少なくとも前記第１内部空間側に突出するように延びる第２筒状部が設けられ、
    　前記第２筒状部は、一端が前記第２内部空間に開口し、他端が閉塞されている、
    　スピーカー装置。     a sealed casing,
    a partitioning section that partitions the inside of the casing into a first internal space and a second internal space;
    at least one speaker unit provided on the first internal space side of the housing,
    The partition includes a base provided with at least one through hole, and a hollow spherical or ellipsoidal spherical shape, and extends from the base toward the first internal space or the second internal space. at least one dome part that swells and is provided with a communication hole at the top that communicates the first internal space and the second internal space,
    The at least one dome portion is provided with a first cylindrical portion that extends from the position of the communication hole to at least one of the first internal space side and the second internal space side,
    The first cylindrical part has one end open to the first internal space and the other end open to the second internal space,
    The base is provided with a second cylindrical portion that extends from the position of the at least one through hole so as to protrude toward at least the first internal space,
    The second cylindrical part has one end open to the second internal space and the other end closed.
    speaker device.
  2. 　前記第１筒状部は、前記少なくとも１つのドーム部の前記連通孔の位置から前記第１内部空間側及び前記第２内部空間側に突出するように延び、前記連通孔を挿通して設けられている、請求項１に記載のスピーカー装置。 The first cylindrical portion extends from the position of the communication hole of the at least one dome portion to protrude toward the first internal space and the second internal space, and is provided by passing through the communication hole. The speaker device according to claim 1.
  3. 　前記第２筒状部は、前記基部の前記少なくとも１つの貫通孔の位置から前記第１内部空間側及び前記第２内部空間側に突出するように延び、前記少なくとも１つの貫通孔を挿通して設けられている、請求項１に記載のスピーカー装置。 The second cylindrical portion extends from the position of the at least one through hole of the base so as to protrude toward the first internal space and the second internal space, and extends through the at least one through hole. The speaker device according to claim 1, wherein the speaker device is provided with a speaker device according to claim 1.
  4. 　前記第２筒状部は、他端が前記筐体の前記第１内部空間側の内壁面によって閉塞されている、請求項１に記載のスピーカー装置。 The speaker device according to claim 1, wherein the other end of the second cylindrical portion is closed by an inner wall surface of the casing on the first internal space side.
  5. 　前記区画部の前記少なくとも１つのドーム部は、内部が中空の半球状である、請求項１に記載のスピーカー装置。 The speaker device according to claim 1, wherein the at least one dome part of the division part has a hollow hemispherical shape.
PCT/JP2022/047892 2022-03-19 2022-12-26 Speaker device WO2023181567A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH099384A (en) * 1995-06-19 1997-01-10 Seiichiro Sawada Reduction device for standing wave or the like
JP2000125387A (en) * 1998-10-14 2000-04-28 Pioneer Electronic Corp Speaker device
US6062338A (en) * 1997-09-06 2000-05-16 Thompson; Michael A. Loud speaker enclosure
WO2012073431A1 (en) * 2010-12-03 2012-06-07 パナソニック株式会社 Speaker system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021197666A (en) 2020-06-16 2021-12-27 倉司 河邉 Speaker device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH099384A (en) * 1995-06-19 1997-01-10 Seiichiro Sawada Reduction device for standing wave or the like
US6062338A (en) * 1997-09-06 2000-05-16 Thompson; Michael A. Loud speaker enclosure
JP2000125387A (en) * 1998-10-14 2000-04-28 Pioneer Electronic Corp Speaker device
WO2012073431A1 (en) * 2010-12-03 2012-06-07 パナソニック株式会社 Speaker system

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