WO2021199922A1 - Acoustic output device - Google Patents

Acoustic output device Download PDF

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Publication number
WO2021199922A1
WO2021199922A1 PCT/JP2021/008822 JP2021008822W WO2021199922A1 WO 2021199922 A1 WO2021199922 A1 WO 2021199922A1 JP 2021008822 W JP2021008822 W JP 2021008822W WO 2021199922 A1 WO2021199922 A1 WO 2021199922A1
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WO
WIPO (PCT)
Prior art keywords
duct
acoustic output
path
output device
wall portion
Prior art date
Application number
PCT/JP2021/008822
Other languages
French (fr)
Japanese (ja)
Inventor
尉貴 田中
秀樹 南
Original Assignee
ソニーグループ株式会社
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 ソニーグループ株式会社 filed Critical ソニーグループ株式会社
Priority to EP21782180.0A priority Critical patent/EP4131989A4/en
Priority to JP2022511712A priority patent/JPWO2021199922A1/ja
Publication of WO2021199922A1 publication Critical patent/WO2021199922A1/en

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    • 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/34—Directing or guiding sound by means of a phase plug

Definitions

  • This technology relates to the technical field of an acoustic output device including a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit.
  • a so-called bass reflex type acoustic output device equipped with a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit
  • an acoustic output device is a speaker unit at a predetermined position of a housing.
  • a duct unit are attached (see, for example, Patent Document 1).
  • the duct unit is provided with a duct in which the internal space is formed as a sound conduction space, and the sound output from the speaker unit passes through the sound conduction space and is amplified by the duct unit and output from the sound output port of the duct unit to the outside. Will be done.
  • the acoustic output device described in Patent Document 1 is used in a situation where moisture is scattered, and a wall surface forming an opening (acoustic output hole) of a front panel covering a speaker unit and a duct is formed on an inclined surface. Therefore, the invasion of water into the inside is suppressed.
  • water may interfere with the good sound output state of the acoustic output device, or the functionality may deteriorate due to the adhesion of water to the internal structure of the acoustic output device. There is a risk.
  • the object of the present technology acoustic output device is to prevent the accumulation of water that invades the inside and to secure a good acoustic output state.
  • the sound output device includes a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit, and the duct unit is a duct in which a sound conduction space is formed. It has a duct holder to which the duct is attached and a duct cover that covers a part of the duct, and has a discharge port that is communicated with the sound conduction space and can discharge water between the duct holder and the duct cover.
  • a common space is formed, and the duct is provided with a regulation wall portion that separates at least a part of the common space into a first path through which moisture can pass and a second path communicating with the sound conduction space. It was done.
  • the water that has entered the first path is discharged from the discharge port, and the sound that has passed through the sound conduction space passes through the second path.
  • the first path is formed on the duct holder side
  • the second path is formed on the duct cover side
  • the regulation wall portion is described. It is desirable that the restricting wall portion is provided at one end in the axial direction of the duct and is formed in a bent shape in which the diameter increases as the duct approaches one end in the axial direction.
  • the regulation wall portion is formed in a shape that is folded back toward the duct holder side, so that when moisture invades the common space, the regulation wall portion easily guides the moisture to the first path.
  • an opening on one end side of the shared space is formed as an acoustic output port and the outlet is formed as a part of the acoustic output port. ..
  • a part of the shared space is formed as a common path having the discharge port, and the second path is communicated with the common path. ..
  • the water that has entered the second route can flow from the common route toward the discharge port.
  • the area of the space from the regulated wall portion to the acoustic output port increases as it goes from the regulated wall portion to the acoustic output port.
  • the path of the sound output from the speaker unit gradually increases in the traveling direction of the sound.
  • each portion of the duct forming the second path and the duct cover is formed in a curved surface shape.
  • the sound passes through the base cylinder portion formed by the curved surface portions and the second path.
  • the duct has the regulation wall portion and the base cylinder portion continuous with the regulation wall portion, which is opposite to the regulation wall portion of the base cylinder portion. It is desirable that the opening on the side is formed as an acoustic input port, and the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.
  • the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.
  • FIG. 2 to 7 show an embodiment of the sound output device of the present technology, and this figure is a perspective view showing the sound output device. It is a perspective view which shows the acoustic output device in a state which is seen from the direction different from FIG. It is sectional drawing which shows the state which the speaker unit and the duct unit are attached to the inner case. It is an exploded perspective view of a duct unit. It is a figure which shows the path of sound and moisture. It is a figure which shows the path of sound and moisture three-dimensionally. It is a perspective view which shows the example which the acoustic output device is in a horizontal state.
  • the sound output device 1 can be installed on a mounting surface (not shown) such as a table or the upper surface of a floor in either a vertically elongated state or a horizontally oriented state. Has been done. However, the acoustic output device 1 can also be used in a handheld state.
  • the direction in the case where the acoustic output device 1 is in the vertical installation state shall indicate the front-back, up-down, left-right directions.
  • the front-back, up-down, left-right directions shown below are for convenience of explanation, and the implementation of the present technology is not limited to these directions.
  • the acoustic output device 1 is used, for example, in a vertically extending state, and has a vertically long housing 2 and necessary parts supported or arranged on the housing 2 (see FIGS. 1 and 2). ).
  • the housing 2 has a box-shaped outer case 3, a frame 4 attached to the outer surface side of the outer case 3, and an inner case 5 arranged inside the outer case 3.
  • the outer case 3 is configured by connecting a box-shaped front case portion (not shown) opened rearward and a box-shaped rear case portion 6 opened forward in the front-rear direction.
  • a substantially rectangular arrangement hole 6a is formed on the rear surface portion of the rear case portion 6.
  • operation portions 7, 7, ... are arranged on the upper side of the arrangement hole 6a.
  • the frame 4 has base portions 8 and 9 that are vertically separated from each other and connecting portions 10 and 10 that connect the base portions 8 and 9.
  • the base portions 8 and 9 are formed in a plate shape facing substantially vertically, respectively, and the operation portions 11, 11, ... Are arranged on the upper base portion 8.
  • the connecting portions 10 and 10 are continuous with the outer peripheral portions of the base portions 8 and 9 which are substantially opposite to each other in the circumferential direction.
  • the base portions 8 and 9 are formed to have the same outer shape, and have insertion holes 8a and 9a at the same positions at the front end portions, respectively.
  • the base portions 8 and 9 are provided as handle portions 8b and 9b in which the outer portions of the insertion holes 8a and 9a are formed in a substantially arc shape, respectively.
  • the frame 4 is provided with two mounting legs 4a, 4a, ... On the outer peripheral surfaces of the base portions 8 and 9, respectively, and the mounting legs 4a, 4a, ... It is formed in the shape of the shape.
  • the frame 4 is attached to the outer surface of the outer case 3 with the base portion 8 covering the upper surface of the outer case 3 from the upper side and the base portion 9 covering the lower surface of the outer case 3 from the lower side.
  • the acoustic output device 1 by inserting a finger into the insertion holes 8a and 9a of the frame 4 and gripping the handle portions 8b and 9b, it is possible to carry and use the sound output device 1 to a required position.
  • the inner case 5 is formed in a vertically long box shape, has a first insertion arrangement hole 5a on the front surface portion, and has a second insertion arrangement arrangement hole 5b on the rear surface portion (see FIG. 3).
  • the speaker unit 12 is inserted and arranged in the first insertion arrangement hole 5a of the inner case 5, and the front end portion of the speaker unit 12 is attached to the front portion of the inner case 5.
  • the speaker unit 12 is, for example, a dynamic type speaker unit, and is attached to the inner case 5 with the diaphragm 12a positioned in front of the first insertion arrangement hole 5a. Therefore, in the speaker unit 12, a magnetic circuit portion 12b composed of a magnet, a yoke, or the like is located inside the inner case 5.
  • the duct unit 13 is inserted and arranged in the second insertion arrangement hole 5b of the inner case 5, and the rear end portion of the duct unit 13 is attached to the rear surface portion of the inner case 5.
  • the duct unit 13 has a duct holder 14, a duct 15, a duct cover 16, and a duct lid 17 (see FIGS. 3 and 4).
  • the duct holder 14 has a base surface portion 18 facing in the front-rear direction, a peripheral surface portion 19 projecting diagonally rearward from the outer peripheral portion of the base surface portion 18, and a flange-shaped mounted surface portion 20 projecting outward from the outer peripheral portion of the peripheral surface portion 19. And have.
  • An insertion hole 18a is formed in the base surface portion 18. Screw insertion holes 18b, 18b, ... Are formed in the base surface portion 18 around the insertion holes 18a so as to be separated from each other in the circumferential direction.
  • the duct 15 has a cylindrical portion 21 and a flange portion 22.
  • the tubular portion 21 is formed in a substantially cylindrical shape, and is composed of a base tubular portion 23 and a regulation wall portion 24.
  • the internal space of the tubular portion 21 is formed as a sound guiding space 21a through which the sound output from the speaker unit 12 is guided, and an opening on the front side is formed as an acoustic input port 21b.
  • the base cylindrical portion 23 is a portion excluding the rear end portion of the tubular portion 21, and is composed of a continuous portion 23a, an inclined portion 23b, and a diameter changing portion 23c.
  • the rear end portion of the base cylinder portion 23 is provided as a continuous portion 23a
  • the front end portion is provided as a diameter changing portion 23c
  • the inclined portion 23b is provided as a portion between the continuous portion 23a and the diameter changing portion 23c.
  • the continuous portion 23a has an axial direction in the front-rear direction.
  • the inclined portion 23b is inclined so as to be displaced upward as it is separated from the continuous portion 23a.
  • the diameter changing portion 23c is formed in a shape in which the diameter increases as the distance from the inclined portion 23b increases.
  • the regulation wall portion 24 is continuous with the rear end of the continuous portion 23a, is formed in a bent shape in which the diameter increases as the distance from the continuous portion 23a increases, and is formed into an inwardly convex curved surface shape.
  • the regulation wall portion 24 is formed in a circular shape in which the tip surface 24a faces outward in the radial direction with respect to the axis extending in the front-rear direction.
  • the flange portion 22 projects outward from the continuous portion 23a. Screw insertion holes 22a, 22a, ... Are formed in the flange portion 22 so as to be separated from each other in the circumferential direction.
  • the duct cover 16 has a substantially rectangular outer shape, and has a central portion 25, an inner peripheral portion 26, an outer peripheral portion 27, and a peripheral portion 28 which are continuously provided in order from the inner side, and the central portion 25 and the inner peripheral portion.
  • the portion 26 and the outer peripheral portion 27 are formed in a curved surface shape.
  • the central portion 25 is formed in a shape that is convex forward, and is formed in a bowl shape that has a recess 25a that is opened rearward.
  • the inner peripheral portion 26 is continuous with the outer periphery of the central portion 25, is formed in a shape that is convex rearward, and is formed in a shape that has a recess 26a that is opened in the front.
  • the outer peripheral portion 27 is continuous with the outer circumference of the inner peripheral portion 26, is formed in a shape that is convex forward, and is formed in a shape that has a concave portion 27a that is opened rearward.
  • the peripheral edge portion 28 is continuously formed on the outer peripheral portion 27 on the outer periphery of the outer peripheral portion 27, and is formed in a plate shape facing in the front-rear direction.
  • the duct cover 16 is provided with mounting shafts 29, 29, ... Protruding rearward from the outer peripheral portion 27, separated from each other in the circumferential direction. Screw insertion holes 28a, 28a, ... Are formed in the peripheral edge portion 28 of the duct cover 16 so as to be separated from each other in the circumferential direction.
  • the parts other than the attachment shafts 29, 29, ... Of the duct holder 14 and the duct cover 16 are positioned so as to face each other, and are located between the two.
  • a space is formed.
  • the space between the duct holder 14 and the duct cover 16 is a shared space 30.
  • the continuous portion 23a and the regulation wall portion 24 are located in the shared space 30, and the regulation wall portion 24 is located so as to face the inner peripheral portion 26 of the duct cover 16.
  • the front end surface 24a of the regulation wall portion 24 is located on the inner peripheral side of the front end portion of the outer peripheral portion 27, and a constant gap is formed in the circumferential direction between the front end surface 24a and the front end portion of the outer peripheral portion 27.
  • the duct 15 and the duct cover 16 are arranged in the above-mentioned positional relationship, so that the restricted wall portion 24 moves back and forth to the shared space 30.
  • Two separate paths (spaces) are formed in.
  • the path on the front side of the regulation wall portion 24 is the first path 31 through which moisture can pass, and the path on the rear side of the regulation wall portion 24 is the second path 32 communicating with the sound conduction space.
  • the first path 31 is formed as an annular space located on the outer peripheral side of the continuous portion 23a and the regulation wall portion 24.
  • the path (space) on the outer peripheral side of the regulation wall portion 24 is a common path 33 surrounded by the peripheral surface portion 19 of the duct holder 14, the outer peripheral portion 27 of the duct cover 16, and the peripheral edge portion 28. ..
  • the opening on the rear side of the shared space 30 is formed as an annular sound output port 34, and the lower end of the sound output port 34 also functions as a discharge port 34a capable of discharging water.
  • the outer shape of the duct lid 17 is formed to have substantially the same shape and size as the outer shape of the peripheral edge portion 28 of the duct cover 16, and is one size smaller than the arrangement hole 6a formed in the rear case portion 6 of the outer case 3. .. Mounting bosses 17a, 17a, ... Protruding forward are provided on the duct lid 17 so as to be separated in the circumferential direction.
  • the duct lid 17 is attached to the peripheral edge 28 from the rear side by screwing or the like.
  • the duct lid 17 is attached to the duct cover 16 by screwing mounting screws (not shown) inserted into the screw insertion holes 28a, 28a, ... Of the peripheral portion 28 into the mounting bosses 17a, 17a, ....
  • the duct cover 16 is covered from behind by the duct lid 17.
  • the duct unit 13 configured as described above is inserted and arranged in the second insertion arrangement hole 5b of the inner case 5, and the mounted surface portion 20 of the duct holder 14 is inserted into the second insertion arrangement hole 5b in the inner case 5. It is attached to the rear opening edge by screwing or the like.
  • the attached surface 20 of the duct holder 14, a part of the peripheral edge 28 of the duct cover 16, and the duct lid 17 are on the rear side of the second insertion arrangement hole 5b.
  • the inner case 5 to which the speaker unit 12 and the duct unit 13 are attached is arranged inside the outer case 3, and when the inner case 5 is arranged inside the outer case 3, the duct lid 17 is rear of the outer case 3. It is arranged in the arrangement hole 6a formed in the case portion 6.
  • An annular space is formed in the arrangement hole 6a of the rear case portion 6 between the opening edge thereof and the outer peripheral edge of the duct lid 17 (see FIG. 2).
  • This annular space is formed as a sound emitting space 35 in which the sound output from the sound output port 34 through the duct unit 13 is emitted to the outside. Moisture such as rainwater may enter the inside of the duct unit 13 from the sound emitting space 35.
  • the grill cover 36 is attached to the outer case 3 from the front side (see FIGS. 1 and 2).
  • the grill cover 36 has a front surface portion 37 and side surface portions 38, 38, and has notches 37a, 37a opened above and below the front surface portion 37.
  • the grill cover 36 is attached to the outer surface of the outer case 3 in a state of being inserted from the front side into the space surrounded by the base portions 8 and 9 of the frame 4 and the connecting portions 10 and 10.
  • the notches 37a and 37a form a space on the lower side of the base portion 8 and the upper side of the base portion 9 into which a finger can be inserted. Therefore, the user can easily grip the handle portions 8b and 9b by inserting a finger into the space formed by the insertion holes 8a and 9a of the frame 4 and the notches 37a and 37a.
  • the sound output from the speaker unit 12 passes through the sound conduction space 21a from the sound input port 21b of the duct 15 in order, passes through the common path 33 from the second path 32, and passes through the sound emission space 35 via the sound output port 34. Is output to the outside (see arrow A in FIGS. 5 and 6).
  • the duct unit 13 is formed so that the area of the space serving as the acoustic path increases from the regulation wall portion 24 to the acoustic output port 34 as shown below (see FIG. 5).
  • the area of the space at the boundary portion of the regulation wall portion 24 with the continuous portion 23a is S1
  • the area of the space of the intermediate portion in the acoustic path of the regulation wall portion 24 is S2
  • the area of the space at the tip portion of the regulation wall portion 24 is S3.
  • Is S3, and the area of the space in the vicinity of the acoustic output port 34 of the common path 33 is S4.
  • S4 is larger than S3
  • S2 is larger than S1. Therefore, in the duct unit 13, the area of the space serving as the acoustic path is gradually increased from the regulation wall portion 24 to the acoustic output port 34.
  • the acoustic path output from the speaker unit 12 Is gradually increased in the traveling direction of the sound, a large amplification effect of the sound can be obtained, and the acoustic performance of the sound output device 1 can be improved.
  • Moisture may enter the inside of the duct unit 13 from the acoustic output port 34 through the sound emitting space 35 formed by the outer case 3 and the duct lid 17. Moisture enters the common path 33 of the shared space 30 from the sound emitting space 35 through the sound output port 34 (see arrow B in FIGS. 5 and 6).
  • the tip surface 24a of the regulation wall portion 24 is located on the inner peripheral side of the front end portion of the outer peripheral portion 27, and the first path 31 exists directly below the common path 33. There is.
  • the water that has invaded the common path 33 invades the first path 31 without invading the second path 32, and descends the first path 31 on the outer peripheral side of the regulation wall portion 24 and the continuous portion 23a. It is flowing toward. Moisture that has flowed downward through the first path 31 is continuously flowed through the lower portion of the common path 33, and the sound emitting space 35 is passed through the discharge port 34a formed as a part of the acoustic output port 34. Is leaked to the outside of the sound output device 1.
  • the water that has entered the inside of the duct unit 13 from the sound output port 34 through the sound emitting space 35 is discharged from the discharge port 34a to the outside of the sound output device 1 regardless of the amount and momentum of the water.
  • the second path 32 since the second path 32 communicates with the common path 33, the water that has entered the second path 32 can flow from the common path 33 toward the discharge port 34a. Therefore, in the unlikely event that water invades the second path 32, the invaded water can be discharged from the discharge port 34a.
  • the duct 15 is inclined so that the base cylinder portion 23 is displaced upward as the base cylinder portion 23 goes from the regulation wall portion 24 to the acoustic input port 21b, the moisture that has entered the second path 32 enters from the regulation wall portion 24 side. It becomes difficult to flow to the acoustic input port 21b side. Therefore, even if moisture invades the second path 32, it is possible to prevent the invading moisture from flowing into the sound conduction space 21a and improve the sound quality.
  • a shared space 30 is formed between the duct holder 14 and the duct cover 16 and has a discharge port 34a which is communicated with the sound conduction space 21a and can discharge water at one end.
  • the duct 15 is provided with a regulation wall portion 24 that separates at least a part of the shared space 30 into a first path 31 through which moisture can pass and a second path 32 communicating with the sound conduction space 21a. There is.
  • the water that has entered the first path 31 is discharged from the discharge port 34a, and the sound that has passed through the sound conduction space 21a passes through the second path 32, so that the water that has entered the inside of the duct unit 13 is stored. It is possible to prevent and secure good drip-proof performance by a simple configuration, and it is possible to secure a good output state of sound.
  • the drip-proof performance can be ensured by a simple configuration by providing the regulation wall portion 24, the drip-proof performance can be ensured without affecting the length, area, shape, etc. of the duct 15. It is possible to adjust each parameter such as the length, area, and shape of the duct 15, and it is possible to improve the acoustic performance while ensuring good drip-proof performance.
  • the regulation wall portion 24 is provided at one end in the axial direction of the duct 15, and the regulation wall portion 24 is formed in a bent shape in which the diameter increases as it approaches one end in the axial direction of the duct 15.
  • the regulation wall portion 24 is formed in a shape that is folded back toward the duct holder 14, when moisture enters the shared space 30, the regulation wall portion 24 easily guides the moisture to the first path 31, and the moisture. Can be reliably flowed in the first path 31.
  • an opening on one end side of the shared space 30 is formed as an acoustic output port 34, and an discharge port 34a is formed as a part of the acoustic output port 34.
  • the sound output port 34 and the discharge port 34a are separately formed in the shared space 30. There is no need, and the structure of the acoustic output device 1 can be simplified and downsized.
  • the base cylinder portion 23, which is an acoustic path, is formed in a curved surface shape as a whole, and each part of the duct 15 and the duct cover 16 forming the second path 32 is also formed in a curved surface shape.
  • the sound passes through the base cylinder portion 23 and the second path 32 formed by the curved surface portions, the sound quality of the sound output from the sound output device 1 can be improved.
  • the acoustic output device 1 can be stationary with respect to the mounting surface in either the vertically elongated state or the horizontally oriented state (horizontally oriented state). See FIGS. 1, 2 and 7).
  • the user recognizes the orientation in which the operation units 7, 7, ... Arranged in the outer case 3 are positioned upward, and mounts the acoustic output device 1 on the mounting surface in a vertically placed state (FIG. 1). And see FIG. 2). Further, the user recognizes the direction in which the mounting legs 4a of the frame 4 are in contact with the mounting surface, and mounts the acoustic output device 1 on the mounting surface in a horizontal state (see FIG. 7).
  • the operation units 7, 7, ... are located sideways, so that the user operates the operation units 7, 7, ... Which are located sideways to operate the sound output device 1. Can be used satisfactorily.
  • the duct unit 13 is laid down sideways, the orientation of the duct 15 with respect to the mounting surface is changed with respect to the vertical installation state, but in the acoustic output device 1, the duct 15 is also in the horizontal installation state.
  • the base cylinder portion 23 is configured to be inclined so as to be displaced upward from the regulation wall portion 24 toward the acoustic input port 21b.
  • the moisture that has entered the second path 32 is less likely to flow from the regulation wall portion 24 side to the acoustic input port 21b side, so that in any stationary state.
  • moisture invades the second path 32 it is possible to prevent the invading moisture from flowing into the sound guiding space 21a and improve the sound quality.
  • the mounting structure of the duct holder 14, the duct 15, the duct cover 16, and the duct lid 17 in the duct unit 13 described above is an example, and the mounting structure of each part of the duct unit 13 can be changed to another mounting structure. be. Further, the shape of the structure that can be visually recognized from the outside of the acoustic output device 1 such as the duct lid 17 can be formed into an arbitrary shape such as a rectangular shape or a circular shape.
  • the present technology can be configured as follows.
  • the duct unit has a duct in which a sound conduction space is formed, a duct holder to which the duct is attached, and a duct cover that covers a part of the duct.
  • a shared space is formed between the duct holder and the duct cover, which is communicated with the sound conduction space and has a discharge port capable of discharging water.
  • An acoustic output device provided with a regulating wall portion in the duct that separates at least a part of the shared space into a first path through which moisture can pass and a second path communicating with the sound conduction space.
  • the first path is formed on the duct holder side,
  • the second path is formed on the duct cover side,
  • the regulation wall portion is provided at one end in the axial direction of the duct.
  • An opening on one end side of the shared space is formed as an acoustic output port.
  • a part of the shared space is formed as a common path having the outlet, The acoustic output device according to (3) above, wherein the second path is communicated with the common path.
  • the duct has the regulation wall portion and a base cylinder portion continuous with the regulation wall portion.
  • An opening on the side of the base cylinder portion opposite to the regulation wall portion is formed as an acoustic input port.
  • the acoustic output device according to any one of (1) to (6) above, wherein the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.

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

Abstract

This acoustic output device is provided with: a speaker unit that outputs a sound; and a duct unit that amplifies the sound outputted from the speaker unit. The duct unit has a duct in which an acoustic space is formed, a duct holder to which the duct is attached, and a duct cover that covers a part of the duct. Between the duct holder and the duct cover, a shared space is formed which is connected to the acoustic space and which has a discharge port through which moisture can be discharged. The duct is provided with a regulation wall that separates at least a part of the shared space into a first path through which the moisture can be passed and a second path connected to the acoustic space.

Description

音響出力装置Acoustic output device
　本技術は音響を出力するスピーカーユニットとスピーカーユニットから出力される音響を増幅するダクトユニットとを備えた音響出力装置についての技術分野に関する。 This technology relates to the technical field of an acoustic output device including a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit.
　音響を出力するスピーカーユニットとスピーカーユニットから出力される音響を増幅するダクトユニットとを備えた所謂バスレフ型の音響出力装置があり、このような音響出力装置は筐体の所定の各位置にスピーカーユニットとダクトユニットが取り付けられて構成されている（例えば、特許文献１参照）。ダクトユニットには内部空間が音導空間として形成されたダクトが設けられ、スピーカーユニットから出力された音響が音導空間を通りダクトユニットによって増幅されてダクトユニットの音響出力口から外部へ向けて出力される。 There is a so-called bass reflex type acoustic output device equipped with a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit, and such an acoustic output device is a speaker unit at a predetermined position of a housing. And a duct unit are attached (see, for example, Patent Document 1). The duct unit is provided with a duct in which the internal space is formed as a sound conduction space, and the sound output from the speaker unit passes through the sound conduction space and is amplified by the duct unit and output from the sound output port of the duct unit to the outside. Will be done.
　特許文献１に記載された音響出力装置は、水分が飛散される状況において使用され、スピーカーユニットとダクトを覆う前面パネルの開口部（音響出力孔）を形成する壁面が傾斜面に形成されることにより内部への水分の侵入が抑制されている。 The acoustic output device described in Patent Document 1 is used in a situation where moisture is scattered, and a wall surface forming an opening (acoustic output hole) of a front panel covering a speaker unit and a duct is formed on an inclined surface. Therefore, the invasion of water into the inside is suppressed.
特開２００８－５４２４７号公報Japanese Unexamined Patent Publication No. 2008-54247
　ところで、バスレフ型の音響出力装置においては、音響の良好な出力状態を確保するために音響出力孔等が形成される必要があるが、屋外や室内の水分が飛散される状況において使用される場合には、雨水等の音響出力装置に向かう水分の角度が変化するため、音響出力装置に対する水分の角度によっては音響出力装置の内部に水分が侵入するおそれがある。 By the way, in a bass reflex type acoustic output device, it is necessary to form an acoustic output hole or the like in order to secure a good acoustic output state, but when it is used in a situation where moisture is scattered outdoors or indoors. Since the angle of moisture toward the acoustic output device such as rainwater changes, moisture may enter the inside of the acoustic output device depending on the angle of moisture with respect to the acoustic output device.
　例えば、上記した特許文献１に記載された音響出力装置において、前面パネルに形成された傾斜面に沿う角度で水分が音響出力装置に向かった場合には、音響出力装置の内部への水分の侵入が生じてしまい、侵入した水分が音響出力装置の内部において貯留するおそれがある。 For example, in the acoustic output device described in Patent Document 1 described above, when moisture is directed toward the acoustic output device at an angle along an inclined surface formed on the front panel, moisture invades the inside of the acoustic output device. May occur and the invading moisture may be stored inside the acoustic output device.
　音響出力装置の内部に水分が貯留してしまうと、音響出力装置における音響の良好な出力状態に支障を来したり、音響出力装置の内部構造への水分の付着により機能性の低下を来すおそれがある。 If water accumulates inside the acoustic output device, it may interfere with the good sound output state of the acoustic output device, or the functionality may deteriorate due to the adhesion of water to the internal structure of the acoustic output device. There is a risk.
　そこで、本技術音響出力装置は、内部に侵入する水分の貯留を防止して音響の良好な出力状態を確保することを課題とする。 Therefore, the object of the present technology acoustic output device is to prevent the accumulation of water that invades the inside and to secure a good acoustic output state.
　第１に、本技術に係る音響出力装置は、音響を出力するスピーカーユニットと前記スピーカーユニットから出力される音響を増幅するダクトユニットとを備え、前記ダクトユニットは音導空間が形成されたダクトと前記ダクトが取り付けられるダクトホルダーと前記ダクトの一部を覆うダクトカバーとを有し、前記ダクトホルダーと前記ダクトカバーの間には前記音導空間に連通され水分の排出が可能な排出口を有する共有空間が形成され、前記ダクトには前記共有空間の少なくとも一部を水分の通過が可能な第１の経路と前記音導空間に連通される第２の経路とに分離する規制壁部が設けられたものである。 First, the sound output device according to the present technology includes a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit, and the duct unit is a duct in which a sound conduction space is formed. It has a duct holder to which the duct is attached and a duct cover that covers a part of the duct, and has a discharge port that is communicated with the sound conduction space and can discharge water between the duct holder and the duct cover. A common space is formed, and the duct is provided with a regulation wall portion that separates at least a part of the common space into a first path through which moisture can pass and a second path communicating with the sound conduction space. It was done.
　これにより、第１の経路に侵入した水分が排出口から排出され音導空間を通った音響が第２の経路を通過される。 As a result, the water that has entered the first path is discharged from the discharge port, and the sound that has passed through the sound conduction space passes through the second path.
　第２に、上記した本技術に係る音響出力装置においては、前記第１の経路が前記ダクトホルダー側に形成され、前記第２の経路が前記ダクトカバー側に形成され、前記規制壁部が前記ダクトの軸方向における一端部に設けられ、前記規制壁部が前記ダクトの軸方向において一端に近付くに従って径が大きくなる屈曲形状に形成されることが望ましい。 Secondly, in the acoustic output device according to the present technology described above, the first path is formed on the duct holder side, the second path is formed on the duct cover side, and the regulation wall portion is described. It is desirable that the restricting wall portion is provided at one end in the axial direction of the duct and is formed in a bent shape in which the diameter increases as the duct approaches one end in the axial direction.
　これにより、規制壁部がダクトホルダー側に折り返される形状に形成されるため、共有空間に水分が侵入したときに規制壁部によって水分が第１の経路に誘導され易くなる。 As a result, the regulation wall portion is formed in a shape that is folded back toward the duct holder side, so that when moisture invades the common space, the regulation wall portion easily guides the moisture to the first path.
　第３に、上記した本技術に係る音響出力装置においては、前記共有空間の一端側の開口が音響出力口として形成され、前記排出口が前記音響出力口の一部として形成されることが望ましい。 Thirdly, in the acoustic output device according to the present technology described above, it is desirable that an opening on one end side of the shared space is formed as an acoustic output port and the outlet is formed as a part of the acoustic output port. ..
　これにより、共有空間の一端側に形成された開口の一部が音響出力口と排出口の双方の機能を有するため、共有空間に音響出力口と排出口を各別に形成する必要がない。 As a result, since a part of the opening formed on one end side of the shared space has the functions of both the sound output port and the discharge port, it is not necessary to separately form the sound output port and the discharge port in the shared space.
　第４に、上記した本技術に係る音響出力装置においては、前記共有空間の一部が前記排出口を有する共通経路として形成され、前記第２の経路が前記共通経路に連通されることが望ましい。 Fourth, in the acoustic output device according to the present technology described above, it is desirable that a part of the shared space is formed as a common path having the discharge port, and the second path is communicated with the common path. ..
　これにより、第２の経路に侵入した水分が共通経路から排出口へ向けて流動可能にされる。 As a result, the water that has entered the second route can flow from the common route toward the discharge port.
　第５に、上記した本技術に係る音響出力装置においては、前記規制壁部から前記音響出力口までの空間の面積が前記規制壁部から前記音響出力口へ行くに従って大きくされることが望ましい。 Fifth, in the above-mentioned acoustic output device according to the present technology, it is desirable that the area of the space from the regulated wall portion to the acoustic output port increases as it goes from the regulated wall portion to the acoustic output port.
　これにより、スピーカーユニットから出力された音響の経路が音響の進行方向において次第に大きくなる。 As a result, the path of the sound output from the speaker unit gradually increases in the traveling direction of the sound.
　第６に、上記した本技術に係る音響出力装置においては、前記第２の経路を形成する前記ダクトと前記ダクトカバーの各部分が曲面状に形成されることが望ましい。 Sixth, in the acoustic output device according to the present technology described above, it is desirable that each portion of the duct forming the second path and the duct cover is formed in a curved surface shape.
　これにより、曲面状の各部によって形成されたベース筒部と第２の経路を音響が通過される。 As a result, the sound passes through the base cylinder portion formed by the curved surface portions and the second path.
　第７に、上記した本技術に係る音響出力装置においては、前記ダクトが前記規制壁部と前記規制壁部に連続するベース筒部とを有し、前記ベース筒部の前記規制壁部と反対側の開口が音響入力口として形成され、前記ベース筒部が前記規制壁部から前記音響入力口へ行くに従って上方に変位するように傾斜されることが望ましい。 Seventh, in the acoustic output device according to the present technology described above, the duct has the regulation wall portion and the base cylinder portion continuous with the regulation wall portion, which is opposite to the regulation wall portion of the base cylinder portion. It is desirable that the opening on the side is formed as an acoustic input port, and the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.
　これにより、第２の経路に侵入した水分が規制壁部側から音響入力口側へ流動され難くなる。 This makes it difficult for the moisture that has entered the second path to flow from the regulation wall side to the acoustic input port side.
　第８に、上記した本技術に係る音響出力装置においては、縦置き状態と横置き状態の二つの状態での据え置きが可能にされ、前記縦置き状態と前記横置き状態の双方の状態において前記ベース筒部が前記規制壁部から前記音響入力口へ行くに従って上方に変位するように傾斜されることが望ましい。 Eighth, in the above-mentioned acoustic output device according to the present technology, it is possible to perform stationary in two states, a vertical installation state and a horizontal installation state, and the above-mentioned in both the vertical installation state and the horizontal installation state. It is desirable that the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.
　これにより、縦置き状態か横置き状態かの据え置き状態に拘わらず第２の経路に侵入した水分が規制壁部側から音響入力口側へ流動され難くなる。 As a result, it becomes difficult for the moisture that has entered the second path to flow from the regulation wall side to the acoustic input port side regardless of the stationary state of the vertical installation state or the horizontal installation state.
図２乃至図７と共に本技術音響出力装置の実施の形態を示すものであり、本図は、音響出力装置を示す斜視図である。2 to 7 show an embodiment of the sound output device of the present technology, and this figure is a perspective view showing the sound output device. 音響出力装置を図１とは異なる方向から見た状態で示す斜視図である。It is a perspective view which shows the acoustic output device in a state which is seen from the direction different from FIG. インナーケースにスピーカーユニットとダクトユニットが取り付けられた状態を示す断面図である。It is sectional drawing which shows the state which the speaker unit and the duct unit are attached to the inner case. ダクトユニットの分解斜視図である。It is an exploded perspective view of a duct unit. 音響と水分の経路等を示す図である。It is a figure which shows the path of sound and moisture. 音響と水分の経路等を３次元的に示す図である。It is a figure which shows the path of sound and moisture three-dimensionally. 音響出力装置が横置き状態にされている例を示す斜視図である。It is a perspective view which shows the example which the acoustic output device is in a horizontal state.
　以下に、本技術音響出力装置を実施するための形態を添付図面に従って説明する。 The mode for implementing the present technology acoustic output device will be described below according to the attached drawings.
　<音響出力装置の構成>
　先ず、音響出力装置の構成について説明する（図１乃至図４参照）。 <Configuration of acoustic output device>
First, the configuration of the acoustic output device will be described (see FIGS. 1 to 4).
　音響出力装置１は、縦長の状態にされた縦置き状態と横長の状態にされた横置き状態の何れかの状態でテーブルや床の上面等の図示しない載置面に対して据え置きが可能にされている。但し、音響出力装置１は手持ち状態での使用も可能である。 The sound output device 1 can be installed on a mounting surface (not shown) such as a table or the upper surface of a floor in either a vertically elongated state or a horizontally oriented state. Has been done. However, the acoustic output device 1 can also be used in a handheld state.
　尚、以下の説明にあっては、横置き状態での説明を除き、音響出力装置１が縦置き状態の場合の方向で前後上下左右の方向を示すものとする。但し、以下に示す前後上下左右の方向は説明の便宜上のものであり、本技術の実施に関しては、これらの方向に限定されることはない。 In the following explanation, except for the explanation in the horizontal installation state, the direction in the case where the acoustic output device 1 is in the vertical installation state shall indicate the front-back, up-down, left-right directions. However, the front-back, up-down, left-right directions shown below are for convenience of explanation, and the implementation of the present technology is not limited to these directions.
　音響出力装置１は、例えば、上下に延びる縦置き状態で使用され、縦長の筐体２と筐体２に支持又は配置された所要の各部とを有している（図１乃及び図２参照）。筐体２は箱状のアウターケース３とアウターケース３の外面側に取り付けられたフレーム４とアウターケース３の内部に配置されたインナーケース５とを有している。 The acoustic output device 1 is used, for example, in a vertically extending state, and has a vertically long housing 2 and necessary parts supported or arranged on the housing 2 (see FIGS. 1 and 2). ). The housing 2 has a box-shaped outer case 3, a frame 4 attached to the outer surface side of the outer case 3, and an inner case 5 arranged inside the outer case 3.
　アウターケース３は後方に開口された箱状の図示しないフロントケース部と前方に開口された箱状のリアケース部６とが前後で結合されて構成されている。 The outer case 3 is configured by connecting a box-shaped front case portion (not shown) opened rearward and a box-shaped rear case portion 6 opened forward in the front-rear direction.
　リアケース部６の後面部には略矩形状の配置孔６ａが形成されている。リアケース部６には配置孔６ａの上側に操作部７、７、・・・が配置されている。 A substantially rectangular arrangement hole 6a is formed on the rear surface portion of the rear case portion 6. In the rear case portion 6, operation portions 7, 7, ... Are arranged on the upper side of the arrangement hole 6a.
　フレーム４は上下に離隔して位置されたベース部８、９とベース部８、９を連結する連結部１０、１０とを有している。 The frame 4 has base portions 8 and 9 that are vertically separated from each other and connecting portions 10 and 10 that connect the base portions 8 and 9.
　ベース部８、９はそれぞれ略上下方向を向く板状に形成され、上側のベース部８には操作部１１、１１、・・・が配置されている。連結部１０、１０はベース部８、９の外周部のうち周方向において略反対側の部分にそれぞれ連続されている。ベース部８、９は外形状が同じ形状に形成され、前端部における同じ位置にそれぞれ挿入孔８ａ、９ａを有している。ベース部８、９はそれぞれ挿入孔８ａ、９ａの外側の部分が略円弧状に形成されたハンドル部８ｂ、９ｂとして設けられている。フレーム４にはベース部８、９の外周面にそれぞれ二つずつの載置脚４ａ、４ａ、・・・が設けられ、載置脚４ａ、４ａ、・・・は側方において同じ方向に突出された形状に形成されている。 The base portions 8 and 9 are formed in a plate shape facing substantially vertically, respectively, and the operation portions 11, 11, ... Are arranged on the upper base portion 8. The connecting portions 10 and 10 are continuous with the outer peripheral portions of the base portions 8 and 9 which are substantially opposite to each other in the circumferential direction. The base portions 8 and 9 are formed to have the same outer shape, and have insertion holes 8a and 9a at the same positions at the front end portions, respectively. The base portions 8 and 9 are provided as handle portions 8b and 9b in which the outer portions of the insertion holes 8a and 9a are formed in a substantially arc shape, respectively. The frame 4 is provided with two mounting legs 4a, 4a, ... On the outer peripheral surfaces of the base portions 8 and 9, respectively, and the mounting legs 4a, 4a, ... It is formed in the shape of the shape.
　フレーム４はベース部８がアウターケース３の上面を上側から覆いベース部９がアウターケース３の下面を下側から覆う状態でアウターケース３の外面に取り付けられている。 The frame 4 is attached to the outer surface of the outer case 3 with the base portion 8 covering the upper surface of the outer case 3 from the upper side and the base portion 9 covering the lower surface of the outer case 3 from the lower side.
　音響出力装置１においては、フレーム４の挿入孔８ａ、９ａに指を挿入してハンドル部８ｂ、９ｂを把持することにより、所要の位置まで持ち運んで使用することが可能にされている。 In the acoustic output device 1, by inserting a finger into the insertion holes 8a and 9a of the frame 4 and gripping the handle portions 8b and 9b, it is possible to carry and use the sound output device 1 to a required position.
　インナーケース５は縦長の箱状に形成され、前面部に第１の挿入配置孔５ａを有し、後面部に第２の挿入配置孔５ｂを有している（図３参照）。 The inner case 5 is formed in a vertically long box shape, has a first insertion arrangement hole 5a on the front surface portion, and has a second insertion arrangement arrangement hole 5b on the rear surface portion (see FIG. 3).
　インナーケース５の第１の挿入配置孔５ａにはスピーカーユニット１２が挿入されて配置され、スピーカーユニット１２の前端部がインナーケース５の前面部に取り付けられている。スピーカーユニット１２は、例えば、ダイナミック型のスピーカーユニットであり、振動板１２ａが第１の挿入配置孔５ａの前側に位置された状態でインナーケース５に取り付けられている。従って、スピーカーユニット１２はマグネットやヨーク等によって構成された磁気回路部１２ｂがインナーケース５の内部に位置されている。 The speaker unit 12 is inserted and arranged in the first insertion arrangement hole 5a of the inner case 5, and the front end portion of the speaker unit 12 is attached to the front portion of the inner case 5. The speaker unit 12 is, for example, a dynamic type speaker unit, and is attached to the inner case 5 with the diaphragm 12a positioned in front of the first insertion arrangement hole 5a. Therefore, in the speaker unit 12, a magnetic circuit portion 12b composed of a magnet, a yoke, or the like is located inside the inner case 5.
　インナーケース５の第２の挿入配置孔５ｂにはダクトユニット１３が挿入されて配置され、ダクトユニット１３の後端部がインナーケース５の後面部に取り付けられている。 The duct unit 13 is inserted and arranged in the second insertion arrangement hole 5b of the inner case 5, and the rear end portion of the duct unit 13 is attached to the rear surface portion of the inner case 5.
　ダクトユニット１３はダクトホルダー１４とダクト１５とダクトカバー１６とダクトリッド１７を有している（図３及び図４参照）。 The duct unit 13 has a duct holder 14, a duct 15, a duct cover 16, and a duct lid 17 (see FIGS. 3 and 4).
　ダクトホルダー１４は前後方向を向くベース面部１８とベース面部１８の外周部から斜め後方に突出された周面部１９と周面部１９の外周部から外方に張り出されたフランジ状の被取付面部２０とを有している。ベース面部１８には挿通孔１８ａが形成されている。ベース面部１８には挿通孔１８ａの周囲にネジ挿通孔１８ｂ、１８ｂ、・・・が周方向に離隔して形成されている。 The duct holder 14 has a base surface portion 18 facing in the front-rear direction, a peripheral surface portion 19 projecting diagonally rearward from the outer peripheral portion of the base surface portion 18, and a flange-shaped mounted surface portion 20 projecting outward from the outer peripheral portion of the peripheral surface portion 19. And have. An insertion hole 18a is formed in the base surface portion 18. Screw insertion holes 18b, 18b, ... Are formed in the base surface portion 18 around the insertion holes 18a so as to be separated from each other in the circumferential direction.
　ダクト１５は筒状部２１とフランジ部２２を有している。筒状部２１は略円筒状に形成され、ベース筒部２３と規制壁部２４によって構成されている。筒状部２１の内部空間はスピーカーユニット１２から出力された音響が導かれる音導空間２１ａとして形成され、前側の開口が音響入力口２１ｂとして形成されている。 The duct 15 has a cylindrical portion 21 and a flange portion 22. The tubular portion 21 is formed in a substantially cylindrical shape, and is composed of a base tubular portion 23 and a regulation wall portion 24. The internal space of the tubular portion 21 is formed as a sound guiding space 21a through which the sound output from the speaker unit 12 is guided, and an opening on the front side is formed as an acoustic input port 21b.
　ベース筒部２３は筒状部２１の後端部を除く部分であり、連続部２３ａと傾斜部２３ｂと径変化部２３ｃから成る。ベース筒部２３は、後端部が連続部２３ａとして設けられ、前端部が径変化部２３ｃとして設けられ、傾斜部２３ｂが連続部２３ａと径変化部２３ｃの間の部分として設けられている。 The base cylindrical portion 23 is a portion excluding the rear end portion of the tubular portion 21, and is composed of a continuous portion 23a, an inclined portion 23b, and a diameter changing portion 23c. The rear end portion of the base cylinder portion 23 is provided as a continuous portion 23a, the front end portion is provided as a diameter changing portion 23c, and the inclined portion 23b is provided as a portion between the continuous portion 23a and the diameter changing portion 23c.
　連続部２３ａは軸方向が前後方向にされている。傾斜部２３ｂは連続部２３ａから離隔するに従って上方に変位するように傾斜されている。径変化部２３ｃは傾斜部２３ｂから離隔するに従って径が大きくなる形状に形成されている。 The continuous portion 23a has an axial direction in the front-rear direction. The inclined portion 23b is inclined so as to be displaced upward as it is separated from the continuous portion 23a. The diameter changing portion 23c is formed in a shape in which the diameter increases as the distance from the inclined portion 23b increases.
　規制壁部２４は連続部２３ａの後端に連続され、連続部２３ａから離隔するに従って径が大きくなる屈曲形状に形成され、内方に凸の曲面状にされている。規制壁部２４は先端面２４ａが前後に延びる軸を基準とした径方向において外方を向く円形状に形成されている。 The regulation wall portion 24 is continuous with the rear end of the continuous portion 23a, is formed in a bent shape in which the diameter increases as the distance from the continuous portion 23a increases, and is formed into an inwardly convex curved surface shape. The regulation wall portion 24 is formed in a circular shape in which the tip surface 24a faces outward in the radial direction with respect to the axis extending in the front-rear direction.
　フランジ部２２は連続部２３ａから外方に張り出されている。フランジ部２２にはネジ挿通孔２２ａ、２２ａ、・・・が周方向に離隔して形成されている。 The flange portion 22 projects outward from the continuous portion 23a. Screw insertion holes 22a, 22a, ... Are formed in the flange portion 22 so as to be separated from each other in the circumferential direction.
　ダクトカバー１６は外形状が略矩形状に形成され、内側から順に連続して設けられた中央部２５と内側周囲部２６と外側周囲部２７と周縁部２８を有し、中央部２５と内側周囲部２６と外側周囲部２７が曲面状に形成されている。 The duct cover 16 has a substantially rectangular outer shape, and has a central portion 25, an inner peripheral portion 26, an outer peripheral portion 27, and a peripheral portion 28 which are continuously provided in order from the inner side, and the central portion 25 and the inner peripheral portion. The portion 26 and the outer peripheral portion 27 are formed in a curved surface shape.
　中央部２５は前方に凸にされた形状に形成され、後方に開口された凹部２５ａを有する椀状に形成されている。内側周囲部２６は中央部２５の外周に連続され、後方に凸にされた形状に形成され、前方に開口された凹部２６ａを有する形状に形成されている。外側周囲部２７は内側周囲部２６の外周に連続され、前方に凸にされた形状に形成され、後方に開口された凹部２７ａを有する形状に形成されている。周縁部２８は外側周囲部２７の外周において外側周囲部２７に連続して形成され、前後方向を向く板状に形成されている。 The central portion 25 is formed in a shape that is convex forward, and is formed in a bowl shape that has a recess 25a that is opened rearward. The inner peripheral portion 26 is continuous with the outer periphery of the central portion 25, is formed in a shape that is convex rearward, and is formed in a shape that has a recess 26a that is opened in the front. The outer peripheral portion 27 is continuous with the outer circumference of the inner peripheral portion 26, is formed in a shape that is convex forward, and is formed in a shape that has a concave portion 27a that is opened rearward. The peripheral edge portion 28 is continuously formed on the outer peripheral portion 27 on the outer periphery of the outer peripheral portion 27, and is formed in a plate shape facing in the front-rear direction.
　ダクトカバー１６には外側周囲部２７から後方に突出された取付軸２９、２９、・・・が周方向に離隔して設けられている。ダクトカバー１６の周縁部２８にはネジ挿通孔２８ａ、２８ａ、・・・が周方向に離隔して形成されている。 The duct cover 16 is provided with mounting shafts 29, 29, ... Protruding rearward from the outer peripheral portion 27, separated from each other in the circumferential direction. Screw insertion holes 28a, 28a, ... Are formed in the peripheral edge portion 28 of the duct cover 16 so as to be separated from each other in the circumferential direction.
　ダクトユニット１３はダクト１５の連続部２３ａと規制壁部２４が前方からダクトホルダー１４の挿通孔１８ａに挿入された状態において、図示しない取付ネジが前方からダクトホルダー１４のネジ挿通孔１８ｂ、１８ｂ、・・・とダクト１５のネジ挿通孔２２ａ、２２ａ、・・・とに挿通されダクトカバー１６の取付軸２９、２９、・・・に螺合されることにより、ダクトホルダー１４にダクト１５とダクトカバー１６が取り付けられる（図３参照）。従って、ダクト１５はフランジ部２２がダクトホルダー１４のベース面部１８とダクトカバー１６の取付軸２９、２９、・・・とに挟持された状態でダクトホルダー１４に保持される。 In the duct unit 13, when the continuous portion 23a of the duct 15 and the regulation wall portion 24 are inserted into the insertion holes 18a of the duct holder 14 from the front, mounting screws (not shown) are inserted from the front into the screw insertion holes 18b, 18b of the duct holder 14. ... and the screw insertion holes 22a, 22a, ... Of the duct 15, and screwed into the mounting shafts 29, 29, ... Of the duct cover 16, so that the duct 15 and the duct can be inserted into the duct holder 14. The cover 16 is attached (see FIG. 3). Therefore, the duct 15 is held by the duct holder 14 in a state where the flange portion 22 is sandwiched between the base surface portion 18 of the duct holder 14 and the mounting shafts 29, 29, ... Of the duct cover 16.
　ダクトホルダー１４にダクト１５とダクトカバー１６が取り付けられた状態においては、ダクトホルダー１４とダクトカバー１６の取付軸２９、２９、・・・以外の部分とが対向して位置され、両者の間に空間が形成される。ダクトホルダー１４とダクトカバー１６の間の空間は共有空間３０とされる。ダクト１５は連続部２３ａと規制壁部２４が共有空間３０に位置され、規制壁部２４がダクトカバー１６の内側周囲部２６に対向して位置される。このとき規制壁部２４は先端面２４ａが外側周囲部２７における前端部の内周側に位置され、先端面２４ａと外側周囲部２７の前端部との間に周方向において一定の間隙が形成される。 In the state where the duct 15 and the duct cover 16 are attached to the duct holder 14, the parts other than the attachment shafts 29, 29, ... Of the duct holder 14 and the duct cover 16 are positioned so as to face each other, and are located between the two. A space is formed. The space between the duct holder 14 and the duct cover 16 is a shared space 30. In the duct 15, the continuous portion 23a and the regulation wall portion 24 are located in the shared space 30, and the regulation wall portion 24 is located so as to face the inner peripheral portion 26 of the duct cover 16. At this time, the front end surface 24a of the regulation wall portion 24 is located on the inner peripheral side of the front end portion of the outer peripheral portion 27, and a constant gap is formed in the circumferential direction between the front end surface 24a and the front end portion of the outer peripheral portion 27. NS.
　ダクトホルダー１４にダクト１５とダクトカバー１６が取り付けられた状態において、ダクトホルダー１４とダクト１５とダクトカバー１６が上記のような位置関係にされることにより、規制壁部２４によって共有空間３０に前後に分離された二つの経路（空間）が形成される。共有空間３０において規制壁部２４の前側の経路は水分の通過が可能な第１の経路３１とされ規制壁部２４の後側の経路は音導空間に連通される第２の経路３２とされる。第１の経路３１は連続部２３ａと規制壁部２４の外周側に位置された環状の空間として形成される。 In a state where the duct 15 and the duct cover 16 are attached to the duct holder 14, the duct holder 14, the duct 15 and the duct cover 16 are arranged in the above-mentioned positional relationship, so that the restricted wall portion 24 moves back and forth to the shared space 30. Two separate paths (spaces) are formed in. In the shared space 30, the path on the front side of the regulation wall portion 24 is the first path 31 through which moisture can pass, and the path on the rear side of the regulation wall portion 24 is the second path 32 communicating with the sound conduction space. NS. The first path 31 is formed as an annular space located on the outer peripheral side of the continuous portion 23a and the regulation wall portion 24.
　また、共有空間３０において規制壁部２４の外周側の経路（空間）はダクトホルダー１４の周面部１９とダクトカバー１６の外側周囲部２７及び周縁部２８とによって囲まれた共通経路３３とされる。 Further, in the shared space 30, the path (space) on the outer peripheral side of the regulation wall portion 24 is a common path 33 surrounded by the peripheral surface portion 19 of the duct holder 14, the outer peripheral portion 27 of the duct cover 16, and the peripheral edge portion 28. ..
　共有空間３０の後側の開口は環状の音響出力口３４として形成され、音響出力口３４の下端部は水分の排出が可能な排出口３４ａとしても機能する。 The opening on the rear side of the shared space 30 is formed as an annular sound output port 34, and the lower end of the sound output port 34 also functions as a discharge port 34a capable of discharging water.
　ダクトリッド１７は外形状がダクトカバー１６における周縁部２８の外形状と略同じ形状及び大きさに形成され、アウターケース３のリアケース部６に形成された配置孔６ａより一回り小さくされている。ダクトリッド１７には前方に突出された取付ボス１７ａ、１７ａ、・・・が周方向に離隔して設けられている。 The outer shape of the duct lid 17 is formed to have substantially the same shape and size as the outer shape of the peripheral edge portion 28 of the duct cover 16, and is one size smaller than the arrangement hole 6a formed in the rear case portion 6 of the outer case 3. .. Mounting bosses 17a, 17a, ... Protruding forward are provided on the duct lid 17 so as to be separated in the circumferential direction.
　ダクトリッド１７は周縁部２８に後側からネジ止め等によって取り付けられる。ダクトリッド１７は周縁部２８のネジ挿通孔２８ａ、２８ａ、・・・に挿通された図示しない取付ネジが取付ボス１７ａ、１７ａ、・・・に螺合されることによりダクトカバー１６に取り付けられる。ダクトリッド１７がダクトカバー１６に取り付けられることによりダクトカバー１６がダクトリッド１７によって後方から覆われる。 The duct lid 17 is attached to the peripheral edge 28 from the rear side by screwing or the like. The duct lid 17 is attached to the duct cover 16 by screwing mounting screws (not shown) inserted into the screw insertion holes 28a, 28a, ... Of the peripheral portion 28 into the mounting bosses 17a, 17a, .... By attaching the duct lid 17 to the duct cover 16, the duct cover 16 is covered from behind by the duct lid 17.
　上記のように構成されたダクトユニット１３は、インナーケース５の第２の挿入配置孔５ｂに挿入されて配置され、ダクトホルダー１４における被取付面部２０がインナーケース５における第２の挿入配置孔５ｂの後側開口縁にネジ止め等によって取り付けられる。ダクトユニット１３がインナーケース５に取り付けられた状態においては、ダクトホルダー１４の被取付面部２０とダクトカバー１６における周縁部２８の一部とダクトリッド１７とが第２の挿入配置孔５ｂの後側に位置される。 The duct unit 13 configured as described above is inserted and arranged in the second insertion arrangement hole 5b of the inner case 5, and the mounted surface portion 20 of the duct holder 14 is inserted into the second insertion arrangement hole 5b in the inner case 5. It is attached to the rear opening edge by screwing or the like. When the duct unit 13 is attached to the inner case 5, the attached surface 20 of the duct holder 14, a part of the peripheral edge 28 of the duct cover 16, and the duct lid 17 are on the rear side of the second insertion arrangement hole 5b. Located in.
　スピーカーユニット１２とダクトユニット１３が取り付けられたインナーケース５はアウターケース３の内部に配置され、インナーケース５がアウターケース３の内部に配置された状態においては、ダクトリッド１７がアウターケース３のリアケース部６に形成された配置孔６ａに配置される。リアケース部６の配置孔６ａには、その開口縁とダクトリッド１７の外周縁との間に環状の空間が形成される（図２参照）。この環状の空間はダクトユニット１３を通って音響出力口３４から出力される音響が外部へ向けて放出される放音空間３５として形成される。放音空間３５からは雨水等の水分がダクトユニット１３の内部に侵入される可能性がある。 The inner case 5 to which the speaker unit 12 and the duct unit 13 are attached is arranged inside the outer case 3, and when the inner case 5 is arranged inside the outer case 3, the duct lid 17 is rear of the outer case 3. It is arranged in the arrangement hole 6a formed in the case portion 6. An annular space is formed in the arrangement hole 6a of the rear case portion 6 between the opening edge thereof and the outer peripheral edge of the duct lid 17 (see FIG. 2). This annular space is formed as a sound emitting space 35 in which the sound output from the sound output port 34 through the duct unit 13 is emitted to the outside. Moisture such as rainwater may enter the inside of the duct unit 13 from the sound emitting space 35.
　インナーケース５がアウターケース３の内部に配置された状態において、アウターケース３には前側からグリルカバー３６が取り付けられる（図１及び図２参照）。グリルカバー３６は前面部３７と側面部３８、３８を有し、前面部３７の上下に上方又は下方に開口された切欠３７ａ、３７ａを有している。グリルカバー３６はフレーム４のベース部８、９と連結部１０、１０に囲まれた空間に前側から挿入された状態でアウターケース３の外面に取り付けられる。 With the inner case 5 arranged inside the outer case 3, the grill cover 36 is attached to the outer case 3 from the front side (see FIGS. 1 and 2). The grill cover 36 has a front surface portion 37 and side surface portions 38, 38, and has notches 37a, 37a opened above and below the front surface portion 37. The grill cover 36 is attached to the outer surface of the outer case 3 in a state of being inserted from the front side into the space surrounded by the base portions 8 and 9 of the frame 4 and the connecting portions 10 and 10.
　グリルカバー３６がアウターケース３に取り付けられた状態においては、切欠３７ａ、３７ａによってベース部８の下側とベース部９の上側に指の挿入が可能な空間が形成される。従って、使用者は、フレーム４の挿入孔８ａ、９ａと切欠３７ａ、３７ａによって形成された空間とに指を挿入してハンドル部８ｂ、９ｂを容易に把持することができる。 When the grill cover 36 is attached to the outer case 3, the notches 37a and 37a form a space on the lower side of the base portion 8 and the upper side of the base portion 9 into which a finger can be inserted. Therefore, the user can easily grip the handle portions 8b and 9b by inserting a finger into the space formed by the insertion holes 8a and 9a of the frame 4 and the notches 37a and 37a.
　<音響の経路等>
　以下に、ダクトユニット１３における音響の経路等について説明する（図５及び図６参照）。 <Sound path, etc.>
The acoustic path and the like in the duct unit 13 will be described below (see FIGS. 5 and 6).
　スピーカーユニット１２から出力された音響は、順に、ダクト１５の音響入力口２１ｂから音導空間２１ａを通り、第２の経路３２から共通経路３３を通り、音響出力口３４を介して放音空間３５から外部へ向けて出力される（図５及び図６の矢印Ａ参照）。 The sound output from the speaker unit 12 passes through the sound conduction space 21a from the sound input port 21b of the duct 15 in order, passes through the common path 33 from the second path 32, and passes through the sound emission space 35 via the sound output port 34. Is output to the outside (see arrow A in FIGS. 5 and 6).
　このときダクトユニット１３は、以下のように、音響の経路になる空間の面積が規制壁部２４から音響出力口３４へ行くに従って大きくなるように形成されている（図５参照）。 At this time, the duct unit 13 is formed so that the area of the space serving as the acoustic path increases from the regulation wall portion 24 to the acoustic output port 34 as shown below (see FIG. 5).
　規制壁部２４の連続部２３ａとの境界部分における空間の面積をＳ１とし、規制壁部２４の音響の経路における中間部分の空間の面積をＳ２とし、規制壁部２４の先端部分における空間の面積をＳ３とし、共通経路３３の音響出力口３４の近傍における空間の面積をＳ４とすると、Ｓ４がＳ３より大きく、Ｓ３がＳ２より大きく、Ｓ２がＳ１より大きくされている。従って、ダクトユニット１３においては、音響の経路になる空間の面積が規制壁部２４から音響出力口３４へ行くに従って次第に面積が大きくされている。 The area of the space at the boundary portion of the regulation wall portion 24 with the continuous portion 23a is S1, the area of the space of the intermediate portion in the acoustic path of the regulation wall portion 24 is S2, and the area of the space at the tip portion of the regulation wall portion 24. Is S3, and the area of the space in the vicinity of the acoustic output port 34 of the common path 33 is S4. Assuming that S4 is larger than S3, S3 is larger than S2, and S2 is larger than S1. Therefore, in the duct unit 13, the area of the space serving as the acoustic path is gradually increased from the regulation wall portion 24 to the acoustic output port 34.
　このようにダクトユニット１３においては、音響の経路になる空間の面積が規制壁部２４から音響出力口３４へ行くに従って大きくなるように形成されているため、スピーカーユニット１２から出力された音響の経路が音響の進行方向において次第に大きくなり、音響の大きな増幅効果が得られ、音響出力装置１の音響性能の向上を図ることができる。 As described above, in the duct unit 13, since the area of the space serving as the acoustic path is formed so as to increase from the regulation wall portion 24 to the acoustic output port 34, the acoustic path output from the speaker unit 12 Is gradually increased in the traveling direction of the sound, a large amplification effect of the sound can be obtained, and the acoustic performance of the sound output device 1 can be improved.
　<水分の経路等>
　次に、ダクトユニット１３に、万が一、水分が侵入したときの水分の経路等について説明する（図５及び図６参照）。 <Moisture route, etc.>
Next, a path of moisture and the like in the unlikely event that moisture invades the duct unit 13 will be described (see FIGS. 5 and 6).
　水分はアウターケース３とダクトリッド１７によって形成された放音空間３５を介して音響出力口３４からダクトユニット１３の内部に侵入する可能性がある。水分は、放音空間３５から音響出力口３４を介して共有空間３０の共通経路３３に侵入する（図５及び図６の矢印Ｂ参照）。このとき、上記したように、ダクト１５は規制壁部２４の先端面２４ａが外側周囲部２７の前端部の内周側に位置され、共通経路３３の真下に第１の経路３１が存在している。 Moisture may enter the inside of the duct unit 13 from the acoustic output port 34 through the sound emitting space 35 formed by the outer case 3 and the duct lid 17. Moisture enters the common path 33 of the shared space 30 from the sound emitting space 35 through the sound output port 34 (see arrow B in FIGS. 5 and 6). At this time, as described above, in the duct 15, the tip surface 24a of the regulation wall portion 24 is located on the inner peripheral side of the front end portion of the outer peripheral portion 27, and the first path 31 exists directly below the common path 33. There is.
　従って、共通経路３３に侵入した水分は、第２の経路３２に侵入されることなく第１の経路３１に侵入し、規制壁部２４と連続部２３ａの外周側において第１の経路３１を下方へ向けて流動されていく。第１の経路３１を下方へ向けて流動された水分は、共通経路３３の下側の部分を引き続き流動され、音響出力口３４の一部として形成された排出口３４ａを介して放音空間３５から音響出力装置１の外部に流出される。 Therefore, the water that has invaded the common path 33 invades the first path 31 without invading the second path 32, and descends the first path 31 on the outer peripheral side of the regulation wall portion 24 and the continuous portion 23a. It is flowing toward. Moisture that has flowed downward through the first path 31 is continuously flowed through the lower portion of the common path 33, and the sound emitting space 35 is passed through the discharge port 34a formed as a part of the acoustic output port 34. Is leaked to the outside of the sound output device 1.
　尚、大量の水分が音響出力口３４から侵入した場合や水分の勢いが強く音響出力口３４の内部において水分が飛び跳ねた場合には、第２の経路３２に少量の水分が侵入する可能性があるが、第２の経路３２に侵入した水分は第２の経路３２と共通経路３３の下側の部分とを順に流動され、排出口３４ａから音響出力装置１の外部に流出される。 If a large amount of water invades from the acoustic output port 34, or if the momentum of the water is strong and the water splashes inside the acoustic output port 34, there is a possibility that a small amount of water invades the second path 32. However, the water that has entered the second path 32 is sequentially flowed through the second path 32 and the lower portion of the common path 33, and is discharged from the discharge port 34a to the outside of the acoustic output device 1.
　従って、放音空間３５を介して音響出力口３４からダクトユニット１３の内部に侵入した水分は、水分の量や勢いに拘わらず、排出口３４ａから音響出力装置１の外部に流出される。 Therefore, the water that has entered the inside of the duct unit 13 from the sound output port 34 through the sound emitting space 35 is discharged from the discharge port 34a to the outside of the sound output device 1 regardless of the amount and momentum of the water.
　上記のようにダクトユニット１３においては、第２の経路３２が共通経路３３に連通されているため、第２の経路３２に侵入した水分が共通経路３３から排出口３４ａへ向けて流動可能にされるため、万が一、第２の経路３２に水分が侵入したときに侵入した水分を排出口３４ａから排出することができる。 As described above, in the duct unit 13, since the second path 32 communicates with the common path 33, the water that has entered the second path 32 can flow from the common path 33 toward the discharge port 34a. Therefore, in the unlikely event that water invades the second path 32, the invaded water can be discharged from the discharge port 34a.
　また、ダクト１５はベース筒部２３が規制壁部２４から音響入力口２１ｂへ行くに従って上方に変位するように傾斜されているため、第２の経路３２に侵入した水分は規制壁部２４側から音響入力口２１ｂ側へ流動され難くなる。従って、万が一、第２の経路３２に水分が侵入したときにおいても、侵入した水分の音導空間２１ａへの流入を防止して音質の向上を図ることができる。 Further, since the duct 15 is inclined so that the base cylinder portion 23 is displaced upward as the base cylinder portion 23 goes from the regulation wall portion 24 to the acoustic input port 21b, the moisture that has entered the second path 32 enters from the regulation wall portion 24 side. It becomes difficult to flow to the acoustic input port 21b side. Therefore, even if moisture invades the second path 32, it is possible to prevent the invading moisture from flowing into the sound conduction space 21a and improve the sound quality.
　<まとめ>
　以上に記載した通り、音響出力装置１にあっては、ダクトホルダー１４とダクトカバー１６の間に音導空間２１ａに連通され一端に水分の排出が可能な排出口３４ａを有する共有空間３０が形成され、ダクト１５に共有空間３０の少なくとも一部を水分の通過が可能な第１の経路３１と音導空間２１ａに連通される第２の経路３２とに分離する規制壁部２４が設けられている。 <Summary>
As described above, in the acoustic output device 1, a shared space 30 is formed between the duct holder 14 and the duct cover 16 and has a discharge port 34a which is communicated with the sound conduction space 21a and can discharge water at one end. The duct 15 is provided with a regulation wall portion 24 that separates at least a part of the shared space 30 into a first path 31 through which moisture can pass and a second path 32 communicating with the sound conduction space 21a. There is.
　従って、第１の経路３１に侵入した水分が排出口３４ａから排出され音導空間２１ａを通った音響が第２の経路３２を通過されるため、ダクトユニット１３の内部に侵入する水分の貯留を防止して簡易な構成により良好な防滴性能を確保することができると共に音響の良好な出力状態を確保することができる。 Therefore, the water that has entered the first path 31 is discharged from the discharge port 34a, and the sound that has passed through the sound conduction space 21a passes through the second path 32, so that the water that has entered the inside of the duct unit 13 is stored. It is possible to prevent and secure good drip-proof performance by a simple configuration, and it is possible to secure a good output state of sound.
　また、規制壁部２４を設けることにより簡易な構成により防滴性能を確保することが可能であるため、ダクト１５の長さや面積や形状等に影響を及ぼすことなく防滴性能を確保することができ、ダクト１５の長さや面積や形状等の各パラメーターを調整可能であり、良好な防滴性能を確保した上で音響性能の向上を図ることができる。 Further, since the drip-proof performance can be ensured by a simple configuration by providing the regulation wall portion 24, the drip-proof performance can be ensured without affecting the length, area, shape, etc. of the duct 15. It is possible to adjust each parameter such as the length, area, and shape of the duct 15, and it is possible to improve the acoustic performance while ensuring good drip-proof performance.
　さらに、規制壁部２４がダクト１５の軸方向における一端部に設けられ、規制壁部２４がダクト１５の軸方向において一端に近付くに従って径が大きくなる屈曲形状に形成されている。 Further, the regulation wall portion 24 is provided at one end in the axial direction of the duct 15, and the regulation wall portion 24 is formed in a bent shape in which the diameter increases as it approaches one end in the axial direction of the duct 15.
　従って、規制壁部２４がダクトホルダー１４側に折り返される形状に形成されるため、共有空間３０に水分が侵入したときに規制壁部２４によって水分が第１の経路３１に誘導され易くなり、水分を第１の経路３１において確実に流動させることができる。 Therefore, since the regulation wall portion 24 is formed in a shape that is folded back toward the duct holder 14, when moisture enters the shared space 30, the regulation wall portion 24 easily guides the moisture to the first path 31, and the moisture. Can be reliably flowed in the first path 31.
　さらにまた、共有空間３０の一端側の開口が音響出力口３４として形成され、排出口３４ａが音響出力口３４の一部として形成されている。 Furthermore, an opening on one end side of the shared space 30 is formed as an acoustic output port 34, and an discharge port 34a is formed as a part of the acoustic output port 34.
　従って、共有空間３０の一端側に形成された開口の一部が音響出力口３４と排出口３４ａの双方の機能を有するため、共有空間３０に音響出力口３４と排出口３４ａを各別に形成する必要がなく、音響出力装置１の構造の簡素化及び小型化を図ることができる。 Therefore, since a part of the opening formed on one end side of the shared space 30 has the functions of both the sound output port 34 and the discharge port 34a, the sound output port 34 and the discharge port 34a are separately formed in the shared space 30. There is no need, and the structure of the acoustic output device 1 can be simplified and downsized.
　また、音響の経路であるベース筒部２３は全体が曲面状に形成され、第２の経路３２を形成するダクト１５とダクトカバー１６の各部分も曲面状に形成されている。 Further, the base cylinder portion 23, which is an acoustic path, is formed in a curved surface shape as a whole, and each part of the duct 15 and the duct cover 16 forming the second path 32 is also formed in a curved surface shape.
　従って、曲面状の各部によって形成されたベース筒部２３と第２の経路３２を音響が通過されるため、音響出力装置１から出力される音響の音質の向上を図ることができる。 Therefore, since the sound passes through the base cylinder portion 23 and the second path 32 formed by the curved surface portions, the sound quality of the sound output from the sound output device 1 can be improved.
　<その他>
　音響出力装置１は、上記したように、縦長の状態にされた縦置き状態と横長の状態にされた横置き状態の何れかの状態で載置面に対して据え置きが可能にされている（図１、図２及び図７参照）。 <Others>
As described above, the acoustic output device 1 can be stationary with respect to the mounting surface in either the vertically elongated state or the horizontally oriented state (horizontally oriented state). See FIGS. 1, 2 and 7).
　使用者は、アウターケース３に配置された操作部７、７、・・・が上方に位置される向きを認識して音響出力装置１を縦置き状態で載置面に載置する（図１及び図２参照）。また、使用者は、フレーム４の載置脚４ａが載置面に接する向きを認識して音響出力装置１を横置き状態で載置面に載置する（図７参照）。 The user recognizes the orientation in which the operation units 7, 7, ... Arranged in the outer case 3 are positioned upward, and mounts the acoustic output device 1 on the mounting surface in a vertically placed state (FIG. 1). And see FIG. 2). Further, the user recognizes the direction in which the mounting legs 4a of the frame 4 are in contact with the mounting surface, and mounts the acoustic output device 1 on the mounting surface in a horizontal state (see FIG. 7).
　横置き状態においては、操作部７、７、・・・が側方に位置されるため、使用者は側方に位置された操作部７、７、・・・を操作して音響出力装置１を良好に使用することが可能である。このときダクトユニット１３は横倒しの状態にされるため、縦置きの状態に対してダクト１５も載置面に対する向きが変化されるが、音響出力装置１においては、横置き状態においてもダクト１５はベース筒部２３が規制壁部２４から音響入力口２１ｂへ行くに従って上方に変位するように傾斜されるように構成されている。 In the horizontal installation state, the operation units 7, 7, ... Are located sideways, so that the user operates the operation units 7, 7, ... Which are located sideways to operate the sound output device 1. Can be used satisfactorily. At this time, since the duct unit 13 is laid down sideways, the orientation of the duct 15 with respect to the mounting surface is changed with respect to the vertical installation state, but in the acoustic output device 1, the duct 15 is also in the horizontal installation state. The base cylinder portion 23 is configured to be inclined so as to be displaced upward from the regulation wall portion 24 toward the acoustic input port 21b.
　従って、縦置き状態か横置き状態かの据え置き状態に拘わらず第２の経路３２に侵入した水分が規制壁部２４側から音響入力口２１ｂ側へ流動され難くなるため、何れの据え置き状態においても第２の経路３２に水分が侵入したときに、侵入した水分の音導空間２１ａへの流入を防止して音質の向上を図ることができる。 Therefore, regardless of the stationary state of the vertical installation state or the horizontal installation state, the moisture that has entered the second path 32 is less likely to flow from the regulation wall portion 24 side to the acoustic input port 21b side, so that in any stationary state. When moisture invades the second path 32, it is possible to prevent the invading moisture from flowing into the sound guiding space 21a and improve the sound quality.
　尚、上記したダクトユニット１３におけるダクトホルダー１４とダクト１５とダクトカバー１６とダクトリッド１７の取付構造は一例であり、ダクトユニット１３の各部の取付構造は他の取付構造に変更することも可能である。また、ダクトリッド１７等の音響出力装置１の外部から視認可能な構造の形状は矩形状や円形状等の任意の形状に形成することが可能である。 The mounting structure of the duct holder 14, the duct 15, the duct cover 16, and the duct lid 17 in the duct unit 13 described above is an example, and the mounting structure of each part of the duct unit 13 can be changed to another mounting structure. be. Further, the shape of the structure that can be visually recognized from the outside of the acoustic output device 1 such as the duct lid 17 can be formed into an arbitrary shape such as a rectangular shape or a circular shape.
　<本技術>
　本技術は、以下のような構成にすることができる。 <This technology>
The present technology can be configured as follows.
　（１）
　音響を出力するスピーカーユニットと前記スピーカーユニットから出力される音響を増幅するダクトユニットとを備え、
　前記ダクトユニットは音導空間が形成されたダクトと前記ダクトが取り付けられるダクトホルダーと前記ダクトの一部を覆うダクトカバーとを有し、
　前記ダクトホルダーと前記ダクトカバーの間には前記音導空間に連通され水分の排出が可能な排出口を有する共有空間が形成され、
　前記ダクトには前記共有空間の少なくとも一部を水分の通過が可能な第１の経路と前記音導空間に連通される第２の経路とに分離する規制壁部が設けられた
　音響出力装置。 (1)
It is equipped with a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit.
The duct unit has a duct in which a sound conduction space is formed, a duct holder to which the duct is attached, and a duct cover that covers a part of the duct.
A shared space is formed between the duct holder and the duct cover, which is communicated with the sound conduction space and has a discharge port capable of discharging water.
An acoustic output device provided with a regulating wall portion in the duct that separates at least a part of the shared space into a first path through which moisture can pass and a second path communicating with the sound conduction space.
　（２）
　前記第１の経路が前記ダクトホルダー側に形成され、
　前記第２の経路が前記ダクトカバー側に形成され、
　前記規制壁部が前記ダクトの軸方向における一端部に設けられ、
　前記規制壁部が前記ダクトの軸方向において一端に近付くに従って径が大きくなる屈曲形状に形成された
　前記（１）に記載の音響出力装置。 (2)
The first path is formed on the duct holder side,
The second path is formed on the duct cover side,
The regulation wall portion is provided at one end in the axial direction of the duct.
The acoustic output device according to (1) above, wherein the regulation wall portion is formed in a bent shape in which the diameter increases as it approaches one end in the axial direction of the duct.
　（３）
　前記共有空間の一端側の開口が音響出力口として形成され、
　前記排出口が前記音響出力口の一部として形成された
　前記（１）又は前記（２）に記載の音響出力装置。 (3)
An opening on one end side of the shared space is formed as an acoustic output port.
The acoustic output device according to (1) or (2), wherein the discharge port is formed as a part of the acoustic output port.
　（４）
　前記共有空間の一部が前記排出口を有する共通経路として形成され、
　前記第２の経路が前記共通経路に連通された
　前記（３）に記載の音響出力装置。 (4)
A part of the shared space is formed as a common path having the outlet,
The acoustic output device according to (3) above, wherein the second path is communicated with the common path.
　（５）
　前記規制壁部から前記音響出力口までの空間の面積が前記規制壁部から前記音響出力口へ行くに従って大きくされた
　前記（３）又は前記（４）の何れかに記載の音響出力装置。 (5)
The acoustic output device according to any one of (3) and (4), wherein the area of the space from the regulation wall portion to the acoustic output port is increased from the regulation wall portion to the acoustic output port.
　（６）
　前記第２の経路を形成する前記ダクトと前記ダクトカバーの各部分が曲面状に形成された
　前記（１）から前記（５）の何れかに記載の音響出力装置。 (6)
The acoustic output device according to any one of (1) to (5) above, wherein each portion of the duct forming the second path and the duct cover is formed in a curved surface.
　（７）
　前記ダクトが前記規制壁部と前記規制壁部に連続するベース筒部とを有し、
　前記ベース筒部の前記規制壁部と反対側の開口が音響入力口として形成され、
　前記ベース筒部が前記規制壁部から前記音響入力口へ行くに従って上方に変位するように傾斜された
　前記（１）から前記（６）の何れかに記載の音響出力装置。 (7)
The duct has the regulation wall portion and a base cylinder portion continuous with the regulation wall portion.
An opening on the side of the base cylinder portion opposite to the regulation wall portion is formed as an acoustic input port.
The acoustic output device according to any one of (1) to (6) above, wherein the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.
　（８）
　縦置き状態と横置き状態の二つの状態での据え置きが可能にされ、
　前記縦置き状態と前記横置き状態の双方の状態において前記ベース筒部が前記規制壁部から前記音響入力口へ行くに従って上方に変位するように傾斜された
　前記（７）に記載の音響出力装置。 (8)
It is possible to defer in two states, vertical and horizontal.
The acoustic output device according to (7), wherein the base cylinder portion is inclined so as to be displaced upward from the regulation wall portion toward the acoustic input port in both the vertical installation state and the horizontal installation state. ..
１　　　音響出力装置
１２　　スピーカーユニット
１３　　ダクトユニット
１４　　ダクトホルダー
１５　　ダクト
１６　　ダクトカバー
２１ａ　音導空間
２１ｂ　音響入力口
２３　　ベース筒部
２４　　規制壁部
３０　　共有空間
３１　　第１の経路
３２　　第２の経路
３４　　音響出力口
３４ａ　排出口 1 Sound output device 12 Speaker unit 13 Duct unit 14 Duct holder 15 Duct 16 Duct cover 21a Sound conduction space 21b Sound input port 23 Base cylinder part 24 Restricted wall part 30 Shared space 31 First path 32 Second path 34 Sound output Port 34a Outlet

Claims (8)

  1. 　音響を出力するスピーカーユニットと前記スピーカーユニットから出力される音響を増幅するダクトユニットとを備え、
    　前記ダクトユニットは音導空間が形成されたダクトと前記ダクトが取り付けられるダクトホルダーと前記ダクトの一部を覆うダクトカバーとを有し、
    　前記ダクトホルダーと前記ダクトカバーの間には前記音導空間に連通され水分の排出が可能な排出口を有する共有空間が形成され、
    　前記ダクトには前記共有空間の少なくとも一部を水分の通過が可能な第１の経路と前記音導空間に連通される第２の経路とに分離する規制壁部が設けられた
    　音響出力装置。     It is equipped with a speaker unit that outputs sound and a duct unit that amplifies the sound output from the speaker unit.
    The duct unit has a duct in which a sound conduction space is formed, a duct holder to which the duct is attached, and a duct cover that covers a part of the duct.
    A shared space is formed between the duct holder and the duct cover, which is communicated with the sound conduction space and has a discharge port capable of discharging water.
    An acoustic output device provided with a regulating wall portion in the duct that separates at least a part of the shared space into a first path through which moisture can pass and a second path communicating with the sound conduction space.
  2. 　前記第１の経路が前記ダクトホルダー側に形成され、
    　前記第２の経路が前記ダクトカバー側に形成され、
    　前記規制壁部が前記ダクトの軸方向における一端部に設けられ、
    　前記規制壁部が前記ダクトの軸方向において一端に近付くに従って径が大きくなる屈曲形状に形成された
    　請求項１に記載の音響出力装置。     The first path is formed on the duct holder side,
    The second path is formed on the duct cover side,
    The regulation wall portion is provided at one end in the axial direction of the duct.
    The acoustic output device according to claim 1, wherein the regulation wall portion is formed in a bent shape in which the diameter increases as it approaches one end in the axial direction of the duct.
  3. 　前記共有空間の一端側の開口が音響出力口として形成され、
    　前記排出口が前記音響出力口の一部として形成された
    　請求項１に記載の音響出力装置。     An opening on one end side of the shared space is formed as an acoustic output port.
    The acoustic output device according to claim 1, wherein the outlet is formed as a part of the acoustic output port.
  4. 　前記共有空間の一部が前記排出口を有する共通経路として形成され、
    　前記第２の経路が前記共通経路に連通された
    　請求項３に記載の音響出力装置。     A part of the shared space is formed as a common path having the outlet,
    The acoustic output device according to claim 3, wherein the second path is communicated with the common path.
  5. 　前記規制壁部から前記音響出力口までの空間の面積が前記規制壁部から前記音響出力口へ行くに従って大きくされた
    　請求項３に記載の音響出力装置。     The acoustic output device according to claim 3, wherein the area of the space from the regulation wall portion to the acoustic output port is increased as the area from the regulation wall portion to the acoustic output port is increased.
  6. 　前記第２の経路を形成する前記ダクトと前記ダクトカバーの各部分が曲面状に形成された
    　請求項１に記載の音響出力装置。     The acoustic output device according to claim 1, wherein each portion of the duct forming the second path and the duct cover is formed in a curved surface.
  7. 　前記ダクトが前記規制壁部と前記規制壁部に連続するベース筒部とを有し、
    　前記ベース筒部の前記規制壁部と反対側の開口が音響入力口として形成され、
    　前記ベース筒部が前記規制壁部から前記音響入力口へ行くに従って上方に変位するように傾斜された
    　請求項１に記載の音響出力装置。     The duct has the regulation wall portion and a base cylinder portion continuous with the regulation wall portion.
    An opening on the side of the base cylinder portion opposite to the regulation wall portion is formed as an acoustic input port.
    The acoustic output device according to claim 1, wherein the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port.
  8. 　縦置き状態と横置き状態の二つの状態での据え置きが可能にされ、
    　前記縦置き状態と前記横置き状態の双方の状態において前記ベース筒部が前記規制壁部から前記音響入力口へ行くに従って上方に変位するように傾斜された
    　請求項７に記載の音響出力装置。     It is possible to defer in two states, vertical and horizontal.
    The acoustic output device according to claim 7, wherein the base cylinder portion is inclined so as to be displaced upward as it goes from the regulation wall portion to the acoustic input port in both the vertical installation state and the horizontal installation state.
PCT/JP2021/008822 2020-03-31 2021-03-05 Acoustic output device WO2021199922A1 (en)

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EP21782180.0A EP4131989A4 (en) 2020-03-31 2021-03-05 Acoustic output device
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Cited By (1)

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WO2023145734A1 (en) * 2022-01-31 2023-08-03 ソニーグループ株式会社 Acoustic output device

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US4785908A (en) * 1987-12-21 1988-11-22 Rothenberg Richard L Vented loudspeaker
US20050058315A1 (en) * 2003-09-12 2005-03-17 Poling John B. Weather resistant porting
JP2008054247A (en) 2006-08-28 2008-03-06 Matsushita Electric Works Ltd Speaker structure for water section and toilet with built-in speaker employing the speaker structure for water section

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JP4946261B2 (en) * 2006-08-16 2012-06-06 ソニー株式会社 Speaker device
US20090196450A1 (en) * 2008-02-02 2009-08-06 Jerry Hughes Outdoor High-Fidelity/High Power Audio & Speaker System

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US4785908A (en) * 1987-12-21 1988-11-22 Rothenberg Richard L Vented loudspeaker
US20050058315A1 (en) * 2003-09-12 2005-03-17 Poling John B. Weather resistant porting
JP2008054247A (en) 2006-08-28 2008-03-06 Matsushita Electric Works Ltd Speaker structure for water section and toilet with built-in speaker employing the speaker structure for water section

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023145734A1 (en) * 2022-01-31 2023-08-03 ソニーグループ株式会社 Acoustic output device

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JPWO2021199922A1 (en) 2021-10-07
EP4131989A4 (en) 2023-10-18

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