WO2014091598A1 - Speaker device - Google Patents

Speaker device Download PDF

Info

Publication number
WO2014091598A1
WO2014091598A1 PCT/JP2012/082346 JP2012082346W WO2014091598A1 WO 2014091598 A1 WO2014091598 A1 WO 2014091598A1 JP 2012082346 W JP2012082346 W JP 2012082346W WO 2014091598 A1 WO2014091598 A1 WO 2014091598A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
sound
diaphragms
speaker device
baffle surface
Prior art date
Application number
PCT/JP2012/082346
Other languages
French (fr)
Japanese (ja)
Inventor
健一 大嶋
高山　浩治
Original Assignee
パイオニア株式会社
東北パイオニア株式会社
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 パイオニア株式会社, 東北パイオニア株式会社 filed Critical パイオニア株式会社
Priority to PCT/JP2012/082346 priority Critical patent/WO2014091598A1/en
Publication of WO2014091598A1 publication Critical patent/WO2014091598A1/en

Links

Images

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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • 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 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • 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
    • H04R1/20—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
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2892—Mountings or supports for transducers
    • H04R1/2896—Mountings or supports for transducers 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
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the present invention relates to a speaker device.
  • speaker devices are often attached to automobile doors, personal computers, televisions or cabinets.
  • a speaker device when a speaker device is attached to an automobile, a personal computer, a television, or the like, there is a restriction on the attachment area. That is, in a general speaker device, a front surface in a direction in which a sound wave oscillated by a diaphragm (cone paper or the like) radiates occupies an area at least as large as the diaphragm.
  • a diaphragm cone paper or the like
  • the problem to be solved by the present invention includes, for example, a problem that the area of the diaphragm generated in the above-described conventional speaker device cannot be sufficiently increased.
  • the speaker device includes a stationary portion including a baffle surface, a first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side, and the baffle surface side and the opposite side.
  • a second diaphragm that emits sound in a direction different from the first diaphragm in a direction different from the first diaphragm, and is supported by the stationary portion directly or via another member, and the first and second A driving portion for driving the diaphragm, wherein one recess is opened in the baffle surface, the first diaphragm and the second diaphragm are located in the recess, and the first vibration The plate and the second diaphragm vibrate so as to be close to and away from each other.
  • a speaker device includes a stationary part (a cabinet, an automobile door, other attached parts, etc.) including a baffle surface.
  • a first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side, and a sound that emits sound in a direction different from the baffle surface side and the opposite side in a direction different from the first diaphragm.
  • a second diaphragm is provided.
  • a driving unit that is supported by the stationary unit directly or via another member and that drives the first and second diaphragms is provided.
  • One recess is opened in the baffle surface, the first diaphragm and the second diaphragm are located in the recess, and the first diaphragm and the second diaphragm vibrate so as to be close to and away from each other. .
  • the speaker device of the first embodiment of the present invention has the structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 includes a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24, and a box portion 25.
  • the baffle plate 21 of the speaker device is, for example, the inner surface of an automobile door, and the surface on the side where the driver or passenger is present is a baffle surface 21a.
  • the side portion 22 extends from the edge of the opening formed in the baffle plate 21 to the side opposite to the baffle surface 21a, and has a back surface portion 23 at the end thereof.
  • An opening 23 a is formed in the back surface portion 23, and the inside of the box portion 25 is communicated with the opening 23 a through a cylindrical port portion 24.
  • the inside of the side portion 22 is a single recess 2A that opens to the baffle surface 21a.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A.
  • the “sound radiation direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • first and second dynamic speakers 10-1 and 10-2 are arranged.
  • the dynamic speakers 10-1 and 10-2 include the first and second diaphragms 1-1 and 1-2, respectively. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a.
  • the dynamic speakers 10-1 and 10-2 include a first driving unit 3-1 and a second driving unit 3 that drive the first diaphragm 1-1 and the second diaphragm 1-2, respectively. -2.
  • the first and second dynamic speakers 10-1 and 10-2 are arranged in parallel in opposite directions. In other words, the vibration plates 1-1 and 1-2 are arranged so that the axes in the vibration direction are coaxial.
  • the sound radiation direction is exactly parallel to the baffle surface 21a, but in the case of the seventh and eighth embodiments described later, the sound radiation direction is slightly inclined with respect to the baffle surface 21a.
  • the concept of “substantially parallel” includes both the case of being exactly parallel and the case of being slightly inclined.
  • the sound emission directions A1 and A2 are exactly opposite to each other, but in the case of the seventh and eighth embodiments described later, the sound emission directions are slightly inclined and reversed.
  • the concept of “substantially reverse” includes both the case where the direction is exactly opposite and the case where the direction is slightly inclined.
  • the drive units 3-1 and 3-2 are supported by the box unit 25 (stationary unit) via the case 3a.
  • the drive units 3-1 and 3-2 include a voice coil 31 and a magnetic circuit 32 having a magnetic gap 32G in which the voice coil 31 is disposed.
  • the voice coil 31 has a cross-sectional shape that is an annular shape. Note that the cross section of the voice coil 31 here is a surface extending in a direction intersecting the vibration direction of the voice coil 31 itself.
  • the voice coil 31 is composed of, for example, a linear conductive member wound around an axis in the vibration direction.
  • the conductive member is supported by an annular voice coil support portion 33.
  • the voice coil support portion 33 may be made of a known resin material. Diaphragms 1-1 and 1-2 are coupled to the end of the voice coil support 33.
  • the magnetic circuit 32 includes a yoke 32A, a magnet 32B, and a plate 32C.
  • a magnetic gap 32G is formed between the outer peripheral surface of the plate 32C and the yoke 32A.
  • the voice coil 31 and the voice coil support portion 33 are disposed in the magnetic gap 32G.
  • the same acoustic signal is input to the voice coils 31 and 31 via the lead wire (not shown)
  • the sound current flowing through the voice coil 31 crosses the magnetic flux of the magnetic gap 32G, thereby generating a Lorentz force.
  • the voice coil support part 33 vibrates. This is a driving force for vibrating the diaphragms 1-1 and 1-2.
  • the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2.
  • the voice coil support portions 33 and 33 are vibrated by linear movement in the opposite directions, and the diaphragms 1-1 and 1-2 are vibrated as indicated by arrows C. That is, the diaphragms 1-1 and 1-2 vibrate so as to be close to and away from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned.
  • the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2 is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d between the first and second diaphragms 1-1 and 1-2 is the maximum length of the first and second diaphragms 1-1 and 1-2. It is smaller than a certain diameter D. Accordingly, the first and second diaphragms 1-1 and 1-2 are baffle plate 21 as compared with the conventional one in which a dynamic speaker is arranged so that one diaphragm is parallel to baffle surface 21a. The area occupied by is smaller. Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • the speaker device of the second embodiment of the present invention has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the second embodiment differs from the first embodiment in the shapes of the baffle plate 21, the side portion 22, the back portion 23, and the recess 2A.
  • the baffle plate 21 is formed with a sound emitting hole 21b at the opening of the recess 2A.
  • the two side portions 22 and 22 are inclined so as to approach the back surface portion 23 side, and the back surface portion 23 is also reduced accordingly.
  • the configurations and operations of the first and second dynamic speakers 10-1 and 10-2, the first drive unit 3-1 and the second drive unit 3-2 are the same as those in the first embodiment. .
  • the same elements as those in the first embodiment are denoted by the same reference numerals as those in FIG.
  • the sound according to the acoustic signal is radiated in the sound radiation directions A1 and A2 due to the vibration of the diaphragms 1-1 and 1-2, and this sound is further detoured in the recess 2A and further B1, Guided in the direction of B2. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a. Since the side portions 22 and 22 are inclined, the periphery of the recess 2A is also inclined. The horn effect is obtained for the sound guided in the direction of B1 and B2 by the shape of the recess 2A.
  • the generated sound is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the baffle plate 21 is the same as that of the first embodiment, and the side portion 22, the back portion 23, and the port portion 24 are the same as those of the second embodiment.
  • the third embodiment differs from the first and second embodiments in the shape of the box portion 25, one dynamic speaker 10, the first drive unit 3-1, and the second drive unit 3- 2 configuration.
  • the drive units 3-1 and 3-2 are supported by the box unit 25 (stationary unit) via the case 3a.
  • the drive units 3-1 and 3-2 include a voice coil 31 and a magnetic circuit 32 having a magnetic gap 32G in which the voice coil 31 is disposed.
  • the voice coil 31 is supported by the voice coil support portion 33.
  • the voice coil 31 and the voice coil support portion 33 are the same as in the first embodiment, and the diaphragms 1-1 and 1-2 are coupled to the end of the voice coil support portion 33.
  • the magnetic circuit 32 includes a yoke 32A, a magnet 32B, and a plate 32C, and a magnetic gap 32G is formed between the outer peripheral surface of the plate 32C and the yoke 32A.
  • the voice coil 31 and the voice coil support portion 33 are disposed in the magnetic gap 32G.
  • the feature of the third embodiment is that the yoke 32A of the first drive unit 3-1 and the yoke 32A of the second drive unit 3-1 are integrated into a single yoke 32D.
  • the length in the opposing direction of the first diaphragm 1-1 and the second diaphragm 1-2 is made smaller than in the first and second embodiments.
  • the voice coil 31 and the voice coil support unit 33 vibrate. This becomes a driving force for vibrating the diaphragms 1-1 and 1-2.
  • the same acoustic signal is supplied to the magnetic circuit 32 of the first and second driving units 3-1 and 3-2 as in the above embodiment, and the diaphragm 1-1 and the diaphragm 1-1 are indicated by arrows C as shown in FIG. 1-2 vibrate so as to be close to and away from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned.
  • the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2 is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d1 between the first and second diaphragms 1-1 and 1-2 is the maximum length of the first and second diaphragms 1-1 and 1-2. It is smaller than a certain diameter D. Further, since the yoke 32A of the first drive unit 3-1 and the yoke 32A of the second drive unit 3-1 are integrated into a single yoke 32D, the first and second diaphragms 1-1 are formed. , 1-2 is smaller than the distance d between the first and second embodiments. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25.
  • a duct portion 24 a having a port portion 24 extending rearward and a bass reflex port 26 that opens to the baffle plate 21 are provided.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A.
  • Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the “sound radiation direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the fourth embodiment is different from the third embodiment in that the cabinet 2 has a duct portion 24a and a bass reflex port 26.
  • the configuration and operation of the drive unit 3-2 are the same as those in the third embodiment, and a duplicate description is omitted.
  • the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2 as in the above embodiment.
  • the diaphragms 1-1 and 1-2 vibrate so as to approach and separate from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the generated sound is guided through the port portion 24 and the duct 24a in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the low-frequency component is sufficiently diffracted and guided further from the bass reflex port 26 toward the baffle surface 21a. Thereby, a bass reflex effect is obtained.
  • the distance d1 between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Furthermore, since the two yokes are integrated as in the third embodiment, the distance d1 is smaller than the distance d between the first and second embodiments. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • a speaker apparatus has a structure shown in FIG.
  • This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 includes a baffle plate 21, side portions 22, a back surface portion 23, and a box portion 27.
  • the first diaphragm 4-1 and the second diaphragm 4-2 are located in the recess 2A.
  • the “sound radiating direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the fifth embodiment differs from the fourth embodiment in that no sound emission holes are formed in the baffle plate 21, the box portion 27 has a thin shape, and the thin speaker 20 instead of the dynamic speaker. It is a point using.
  • the box portion 27 is sealed on the baffle plate 21 side, and openings 27 a and 27 a are formed on the side facing the side portion 22.
  • the first and second diaphragms 4-1 and 4-2 of the thin speaker 20 face the openings 27a and 27a, respectively.
  • the portion of the box portion 27 on the back plate 23 side is a port portion 27b.
  • the thin speaker 20 includes first and second diaphragms 4-1, 4-2, and first and second drive units 5-1, 5-2. .
  • the outer peripheral portions of the diaphragms 4-1 and 4-2 are supported by the frames 20a and 20a via the edges 4a1 and 4a2.
  • the frame 20a is formed with a radiation hole 20b that radiates sound from the back side due to the vibration of the first and second diaphragms 4-1, 4-2.
  • the driving portions 5-1 and 5-2 are held by a mounting portion 20c extending from the side wall of the frame 20a.
  • the drive units 5-1 and 5-2 include a voice coil 51 wound around a voice coil support unit 53 and a magnetic circuit 52 having a magnetic gap 52G.
  • the voice coil support portion 53 has a plate shape.
  • the magnetic circuit 52 includes a plurality of magnets 521 to 524 and a yoke 525. Magnets 521 and 523 and magnets 522 and 524 are provided on both sides of the magnetic gap 52G along the direction of the magnetic field.
  • the magnetic gap 52G is formed in a groove shape so that the voice coil 51 can move within a specified range along a predetermined direction.
  • the voice coil support portion 53 and the diaphragms 4-1 and 4-2 are connected via the link mechanism 6.
  • the link mechanism 6 has link members 6A to 6D, and the link members 6A to 6D have joint portions 6a to 6d.
  • the link members 6A and 6B are connected to the diaphragms 4-1 and 4-2 through joint portions 6a and 6b, respectively.
  • the link members 6C and 6D are connected to the diaphragms 4-1 and 4-2 through joint portions 6c and 6d, respectively.
  • the link members 6A and 6B are connected to the voice coil support portion 53 on the first drive portion 5-1 side via the joint portion 6e.
  • the link members 6C and 6D are connected to the voice coil support portion 53 on the second drive portion 5-2 side through the joint portion 6f.
  • the joint portions 6a to 6f are portions that support or connect the link members 6A to 6D with respect to other portions so that the angle can be changed.
  • each voice coil support part 53 and 53 carries out a linear motion to a reverse direction, and vibrates.
  • the link members 6A to 6D of the link mechanism 6 transmit the vibration of the voice coil support portions 53, 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by the arrow C. . That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
  • the sound corresponding to the acoustic signal is radiated in the direction of the sound radiation direction A1, A2 (FIG. 5 (A)) by the vibration of the diaphragms 4-1 and 4-2, and this sound further bypasses the recess 2A. Guided in the direction of B1 and B2. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 5 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 5 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 20b and the port portion 27b.
  • the distance d2 between the first and second diaphragms 4-1, 4-2 is greater than the length D2 of the first and second diaphragms 4-1, 4-2. Is also getting smaller. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 20 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
  • the vibration directions of the first and second diaphragms 4-1 and 4-2 and the vibration directions of the voice coils 51 and 51 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced.
  • the vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other. In this example, it is exactly vertical, but may be slightly inclined.
  • the concept of “substantially vertical” includes both the case of being exactly vertical and the case of being slightly inclined.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 is the same as that in the fifth embodiment.
  • the same elements as those in the fifth embodiment are denoted by the same reference numerals as those in FIG.
  • Openings 27a and 27a are formed on the side of the box portion 25 that faces the side portion 22, and the first and second diaphragms 4-1 and 4-2 face the openings 27a and 27a, respectively. ing.
  • the “sound radiating direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • This sixth embodiment is different from the fifth embodiment in that the drive unit 5 uses only one thin speaker 30.
  • the thin speaker 30 includes first and second diaphragms 4-1, 4-2 and one drive unit 5.
  • the drive unit 5 is the same as the first drive unit 5-1 of the fifth embodiment.
  • the voice coil support portion 53 of the drive unit 5 and the diaphragms 4-1 and 4-2 are connected via the link mechanism 7.
  • the link mechanism 7 has link members 7A to 7D, and the link members 7A to 7D have joint portions 7a to 7d.
  • the link members 7A and 7B are connected to the diaphragms 4-1 and 4-2 through joint portions 7a and 7b, respectively.
  • the link members 7C and 7D are connected to the diaphragms 4-1 and 4-2 through joint portions 7c and 7d, respectively.
  • the link members 7A and 7B are connected to the voice coil support portion 53 via the joint portion 7e.
  • the link members 7C and 7D are connected to the voice coil support portion 53 via the joint portion 7f.
  • the joint portions 7a to 7f are portions that support or connect the link members 7A to 7D with respect to other portions so that the angle can be changed.
  • an acoustic signal is supplied to the magnetic circuit 52 of the drive unit 5.
  • the voice coil 51 and the voice coil support part 53 vibrate by linear movement.
  • the link members 7A to 7D of the link mechanism 7 transmit the vibration of the voice coil support portion 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by the arrow C. That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
  • the vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 (FIG. 6 (A)) due to the vibration of the diaphragms 4-1 and 4-2, and this sound further bypasses the recess 2A. Guided in the direction of B1 and B2. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 5 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 5 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 20b and the port portion 27b.
  • the distance d2 between the first and second diaphragms 4-1, 4-2 is greater than the length D2 of the first and second diaphragms 4-1, 4-2. Is also getting smaller. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 20 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the baffle plate 21, the side portion 22, the back portion 23, and the port portion 24 are the same as those in the third embodiment (FIG. 3A). It is.
  • the box portion 25 is the same as that in the first embodiment (FIG. 1A).
  • first and second dynamic speakers 10-1 and 10-2 are arranged.
  • the two dynamic speakers 10-1 and 10-2 are arranged in parallel in opposite directions, but the two dynamic speakers 10-1 and 10-2 in the seventh embodiment are mutually connected. It is arranged in a reverse direction and slightly inclined in the reverse direction. In other words, the vibration direction axes of the diaphragms 1-1 and 1-2 are slightly angled. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the individual constituent actions of the first and second dynamic speakers 10-1 and 10-2 are the same as those in the first embodiment, and a duplicate description is omitted.
  • the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2 as in the first embodiment.
  • the diaphragms 1-1 and 1-2 vibrate so as to approach and separate from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned.
  • the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2 is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d3 between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • the vibration direction of the first and second diaphragms 1-1 and 1-2 and the vibration direction of the voice coils 31 and 31 are slightly inclined, but most of the movement amount of the member due to the vibration is as follows. Since the directions are always reversed, it is possible to substantially cancel vibrations from each other and reduce the generation of unnecessary sounds.
  • a speaker apparatus has a structure shown in FIG.
  • This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 includes a baffle plate 21 having a baffle surface 21 a, a side portion 22, a back surface portion 23, a port portion 24 and a box portion 28.
  • the two side portions 22 and 22 are inclined so as to approach the back surface portion 23 side, and the back surface portion 23 is located at the rear end portion.
  • the insides of the side portions 22 and 22 form one concave portion 2A opened in the baffle surface 21a.
  • the first diaphragm 4-1 and the second diaphragm 4-2 are located in the recess 2A. Openings 28a, 28a are formed on the side of the box portion 28 that faces the side portion 22, and the first and second diaphragms 4-1, 4-2 are respectively exposed to the openings 28a, 28a. ing.
  • the “sound radiation direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiation direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • a thin speaker 40 having only one drive unit 5 and slightly oscillating diaphragms 4-1, 4-2 is used.
  • the thin speaker 40 includes first and second diaphragms 4-1 and 4-2 and a single drive unit 5.
  • the outer peripheral portions of the diaphragms 4-1 and 4-2 are supported by a frame 40a disposed in the box portion 28 and the port portion 24 via edges 4a1 and 4a2.
  • the frame 40a is formed with a radiation hole 40b that radiates sound from the back side due to the vibration of the first and second diaphragms 4-1, 4-2.
  • the drive unit 5 is the same as the first drive unit 5-1 of the fifth embodiment, and the same elements as those of the drive unit 5-1 are denoted by the same reference numerals as those in FIG.
  • the voice coil support part 53 of the driving part 5 and the diaphragms 4-1 and 4-2 are connected via a link mechanism 8.
  • the link mechanism 8 has link members 8A to 8D, and the link members 8A to 8D have joint portions 8a to 8d.
  • the link members 8A and 8B are connected to the diaphragms 4-1 and 4-2 through joint portions 8a and 8b, respectively.
  • the link members 8C and 8D are connected to the diaphragms 4-1 and 4-2 through joint portions 8c and 8d, respectively.
  • the link members 8A and 8B are connected to the voice coil support portion 53 via the joint portion 8e.
  • the link members 8C and 8D are connected to the voice coil support portion 53 via the joint portion 8f.
  • the joint portions 8a to 8f are portions that support or connect the link members 8A to 8D with respect to other portions so that the angles can be changed.
  • an acoustic signal is supplied to the magnetic circuit 52 of the drive unit 5.
  • the voice coil 51 and the voice coil support part 53 vibrate by linear movement.
  • the link members 8A to 8D of the link mechanism 8 transmit the vibration of the voice coil support portion 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by an arrow C. That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
  • the vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibration of the diaphragms 4-1 and 4-2, and this sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 6 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 6 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 40b and the port portion 24.
  • the distance d4 between the first and second diaphragms 4-1, 4-2 is smaller than the length D3 of the first and second diaphragms 4-1, 4-2. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 40 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
  • the driving unit drives the voice coil by a magnetic circuit
  • the driving unit may be a piezoelectric element, a magnetostrictive element, an artificial muscle, or the like.
  • the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose, configuration, or the like.
  • the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

By sufficiently increasing the surface area of the diaphragm, etc., occurring in a speaker device, sufficient sound pressure is achieved. This speaker device is provided with a cabinet (2) including a baffle surface (21a), a first diaphragm (1-1) which generates sound, and a second diaphragm (1-2) which generates sound in a direction (A2) different from that of the first diaphragm (1-1). The speaker device is provided with drive units (3-1, 3-2) which are supported by the cabinet (2) directly or via another component and which drive the first and second diaphragms (1-1, 1-2). One recess (2A) is provided where the first diaphragm (1-1) and the second diaphragm (1-2) are positioned and which opens towards the baffle surface (21a). The first diaphragm (1-1) and the second diaphragm (1-2) vibrate so as to move closer to and apart from each other.

Description

スピーカ装置Speaker device
　本発明は、スピーカ装置に関する。 The present invention relates to a speaker device.
　従来、スピーカ装置は、自動車のドアや、パソコン、テレビまたはキャビネット等に取り付けられることが多い。特に、自動車、パソコン、テレビなどにスピーカ装置を取り付ける場合、取り付け面積の制約がある。すなわち、一般的なスピーカ装置は振動板（コーン紙等）で振動された音波が放射する方向の前面は、少なくとも振動板の大きさだけの面積を専有する。 Conventionally, speaker devices are often attached to automobile doors, personal computers, televisions or cabinets. In particular, when a speaker device is attached to an automobile, a personal computer, a television, or the like, there is a restriction on the attachment area. That is, in a general speaker device, a front surface in a direction in which a sound wave oscillated by a diaphragm (cone paper or the like) radiates occupies an area at least as large as the diaphragm.
特許第４５２６３５６号公報Japanese Patent No. 4526356
　従来の一般的なスピーカ装置では、取り付け面積の制約があるため、振動板の面積を十分に大きくできず、十分な音圧を得ることが難しい。 In conventional general speaker devices, there is a restriction on the mounting area, so the area of the diaphragm cannot be increased sufficiently, and it is difficult to obtain sufficient sound pressure.
　本発明が解決しようとする課題には、上述した従来のスピーカ装置において生じる振動板の面積を十分に大きくできないという問題が一例として挙げられる。 The problem to be solved by the present invention includes, for example, a problem that the area of the diaphragm generated in the above-described conventional speaker device cannot be sufficiently increased.
　請求項１に記載のスピーカ装置は、バッフル面を含む静止部と、前記バッフル面側及びその反対側とは異なった方向に音を発する第１の振動板と、前記バッフル面側及びその反対側とは異なった方向で前記第１の振動板とは異なった方向に音を発する第２の振動板と、前記静止部に直接または他の部材を介して支持され、前記第１及び前記第２の振動板を駆動する駆動部と、を備え、前記バッフル面に１つの凹部が開口し、当該凹部に前記第１の振動板と前記第２の振動板が位置するとともに、前記第１の振動板と前記第２の振動板とが互いに近接離間するように振動することを特徴とする。 The speaker device according to claim 1 includes a stationary portion including a baffle surface, a first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side, and the baffle surface side and the opposite side. A second diaphragm that emits sound in a direction different from the first diaphragm in a direction different from the first diaphragm, and is supported by the stationary portion directly or via another member, and the first and second A driving portion for driving the diaphragm, wherein one recess is opened in the baffle surface, the first diaphragm and the second diaphragm are located in the recess, and the first vibration The plate and the second diaphragm vibrate so as to be close to and away from each other.
本発明の第１実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 1st Example of this invention. 本発明の第２実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 2nd Example of this invention. 本発明の第３実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 3rd Example of this invention. 本発明の第４実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 4th Example of this invention. 本発明の第５実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 5th Example of this invention. 本発明の第６実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 6th Example of this invention. 本発明の第７実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 7th Example of this invention. 本発明の第８実施例のスピーカ装置を示す図である。It is a figure which shows the speaker apparatus of 8th Example of this invention.
　以下、本発明の一実施形態を説明する。本発明の一実施形態に係るスピーカ装置は、バッフル面を含む静止部（キャビネット、自動車のドア、その他被取付部等）を備える。バッフル面側及びその反対側とは異なった方向に音を発する第１の振動板と、バッフル面側及びその反対側とは異なった方向で第１の振動板とは異なった方向に音を発する第２の振動板を備える。静止部に直接または他の部材を介して支持され、第１及び第２の振動板を駆動する駆動部を備える。バッフル面に１つの凹部が開口し、当該凹部に第１の振動板と第２の振動板が位置するとともに、第１の振動板と第２の振動板とが互いに近接離間するように振動する。 Hereinafter, an embodiment of the present invention will be described. A speaker device according to an embodiment of the present invention includes a stationary part (a cabinet, an automobile door, other attached parts, etc.) including a baffle surface. A first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side, and a sound that emits sound in a direction different from the baffle surface side and the opposite side in a direction different from the first diaphragm. A second diaphragm is provided. A driving unit that is supported by the stationary unit directly or via another member and that drives the first and second diaphragms is provided. One recess is opened in the baffle surface, the first diaphragm and the second diaphragm are located in the recess, and the first diaphragm and the second diaphragm vibrate so as to be close to and away from each other. .
　本発明の一実施例を、図１乃至図８に基づいて説明する。なお、以下の各実施例において、同様な要素には同符号を付記してある。 An embodiment of the present invention will be described with reference to FIGS. In the following embodiments, the same symbols are added to the same elements.
（第１実施例）本発明の第１実施例のスピーカ装置は図１に示す構造である。このスピーカ装置は、第１の振動板１－１と第２の振動板１－２と、「静止部」としてのキャビネット２を備えている。図１(A) に示すように、キャビネット２は、バッフル板２１、側部２２、背面部２３、ポート部２４及びボックス部２５を有している。なお、このスピーカ装置のバッフル板２１は例えば自動車のドアの内面であり、運転者や同乗者がいる側の面がバッフル面２１ａとなっている。 (First Embodiment) The speaker device of the first embodiment of the present invention has the structure shown in FIG. This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 1A, the cabinet 2 includes a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24, and a box portion 25. The baffle plate 21 of the speaker device is, for example, the inner surface of an automobile door, and the surface on the side where the driver or passenger is present is a baffle surface 21a.
　側部２２はバッフル板２１に形成された開口の縁からバッフル面２１ａと反対側に延設され、その端部に背面部２３が有る。背面部２３には開口２３ａが形成され、ボックス部２５の内側は、筒状のポート部２４を介して開口２３ａに連通されている。側部２２の内側はバッフル面２１ａに開口した１つの凹部２Ａとなっている。第１の振動板１－１と第２の振動板１－２は凹部２Ａ内に位置する。第１の振動板１－１が音を放射する「音放射方向」は図１(A) に示す矢印Ａ１の方向である。第２の振動板１－２が音を放射する「音放射方向」は図１(A) に示す矢印Ａ２の方向である。 The side portion 22 extends from the edge of the opening formed in the baffle plate 21 to the side opposite to the baffle surface 21a, and has a back surface portion 23 at the end thereof. An opening 23 a is formed in the back surface portion 23, and the inside of the box portion 25 is communicated with the opening 23 a through a cylindrical port portion 24. The inside of the side portion 22 is a single recess 2A that opens to the baffle surface 21a. The first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. The “sound radiation direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
　ボックス部２５内には第１及び第２のダイナミック型スピーカ１０－１，１０－２が配設されている。ダイナミック型スピーカ１０－１，１０－２は、前記第１及び第２の振動板１－１，１－２をそれぞれ備えている。ボックス部２５の側部２２と対向する側には開口部２５ａ，２５ａが形成されており、この開口部２５ａ，２５ａに第１及び第２の振動板１－１，１－２がそれぞれ臨まされている。また、ダイナミック型スピーカ１０－１，１０－２は、第１の振動板１－１と第２の振動板１－２をそれぞれ駆動する第１の駆動部３－１と第２の駆動部３－２を備えている。第１及び第２のダイナミック型スピーカ１０－１，１０－２は互いに逆向きに並行に配置されている。すなわち、それぞれの振動板１－１，１－２の振動方向の軸が同軸となるように配置されている。 In the box section 25, first and second dynamic speakers 10-1 and 10-2 are arranged. The dynamic speakers 10-1 and 10-2 include the first and second diaphragms 1-1 and 1-2, respectively. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing. The dynamic speakers 10-1 and 10-2 include a first driving unit 3-1 and a second driving unit 3 that drive the first diaphragm 1-1 and the second diaphragm 1-2, respectively. -2. The first and second dynamic speakers 10-1 and 10-2 are arranged in parallel in opposite directions. In other words, the vibration plates 1-1 and 1-2 are arranged so that the axes in the vibration direction are coaxial.
　この例では音放射方向はバッフル面２１ａと正確に並行であるが、後述の第７実施例、第８実施例の場合は音放射方向がバッフル面２１ａに対して僅かに傾いた状態となる。「略並行」の概念は、この正確に並行である場合も、僅かに傾いている場合も、いずれも包含するものである。また、この例では音放射方向Ａ１とＡ２は正確に逆向きであるが、後述の第７実施例、第８実施例の場合は音放射方向が僅かに傾いた逆向きとなる。「略逆向き」の概念は、この正確に逆向きである場合も、僅かに傾いている逆向きの場合も、いずれも包含するものである。 In this example, the sound radiation direction is exactly parallel to the baffle surface 21a, but in the case of the seventh and eighth embodiments described later, the sound radiation direction is slightly inclined with respect to the baffle surface 21a. The concept of “substantially parallel” includes both the case of being exactly parallel and the case of being slightly inclined. Further, in this example, the sound emission directions A1 and A2 are exactly opposite to each other, but in the case of the seventh and eighth embodiments described later, the sound emission directions are slightly inclined and reversed. The concept of “substantially reverse” includes both the case where the direction is exactly opposite and the case where the direction is slightly inclined.
　図１(B) に示すように、駆動部３－１，３－２はケース３ａを介してボックス部２５（静止部）にそれぞれ支持されている。駆動部３－１，３－２は、ボイスコイル３１とボイスコイル３１が配置される磁気ギャップ３２Ｇを有する磁気回路３２とを備えている。ボイスコイル３１は、環状の形態である断面形状を有する。なお、ここでのボイスコイル３１の断面は、ボイスコイル３１自身の振動方向に交差する方向に延在する面である。 As shown in FIG. 1B, the drive units 3-1 and 3-2 are supported by the box unit 25 (stationary unit) via the case 3a. The drive units 3-1 and 3-2 include a voice coil 31 and a magnetic circuit 32 having a magnetic gap 32G in which the voice coil 31 is disposed. The voice coil 31 has a cross-sectional shape that is an annular shape. Note that the cross section of the voice coil 31 here is a surface extending in a direction intersecting the vibration direction of the voice coil 31 itself.
　ボイスコイル３１は、例えば、振動方向の軸周りに巻き回された線状の導電部材で構成されている。図示の例では、導電部材が環状のボイスコイル支持部３３に支持されている。このボイスコイル支持部３３は、公知の樹脂材料で構成されて構わない。ボイスコイル支持部３３の端部には振動板１－１，１－２が結合されている。 The voice coil 31 is composed of, for example, a linear conductive member wound around an axis in the vibration direction. In the illustrated example, the conductive member is supported by an annular voice coil support portion 33. The voice coil support portion 33 may be made of a known resin material. Diaphragms 1-1 and 1-2 are coupled to the end of the voice coil support 33.
　磁気回路３２は、ヨーク３２Ａと磁石３２Ｂとプレート３２Ｃを備えている。プレート３２Ｃの外周面とヨーク３２Ａとの間に磁気ギャップ３２Ｇが形成される。ボイスコイル３１及びボイスコイル支持部３３は、磁気ギャップ３２Ｇ内に配置されている。そして、図示しない引出線を介してボイスコイル３１，３１に同じ音響信号が入力されると、ボイスコイル３１を流れる音声電流が磁気ギャップ３２Ｇの磁束を横切ることでローレンツ力が生じ、ボイスコイル３１及びボイスコイル支持部３３が振動する。これが振動板１－１，１－２を振動させる駆動力になる。 The magnetic circuit 32 includes a yoke 32A, a magnet 32B, and a plate 32C. A magnetic gap 32G is formed between the outer peripheral surface of the plate 32C and the yoke 32A. The voice coil 31 and the voice coil support portion 33 are disposed in the magnetic gap 32G. When the same acoustic signal is input to the voice coils 31 and 31 via the lead wire (not shown), the sound current flowing through the voice coil 31 crosses the magnetic flux of the magnetic gap 32G, thereby generating a Lorentz force. The voice coil support part 33 vibrates. This is a driving force for vibrating the diaphragms 1-1 and 1-2.
　以上の構成により、第１及び第２の駆動部３－１，３－２の磁気回路３２に同じ音響信号が供給される。これにより、それぞれのボイスコイル支持部３３，３３が逆方向に直線運動して振動し、振動板１－１，１－２が矢印Ｃのように振動する。すなわち、振動板１－１，１－２が互いに近接離間するように振動する。振動板１－１，１－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板１－１の一方向から発せられる音と、第２の振動板１－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。また、第１の振動板１－１の駆動部３－１側（他の方向）から発せられる音と、第２の振動板１－２の駆動部３－２側（他の方向）から発せられる音は、ポート部２４を通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 With the above configuration, the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2. As a result, the voice coil support portions 33 and 33 are vibrated by linear movement in the opposite directions, and the diaphragms 1-1 and 1-2 are vibrated as indicated by arrows C. That is, the diaphragms 1-1 and 1-2 vibrate so as to be close to and away from each other. The sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a. In addition, the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2. The generated sound is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
　図１(B) に示すように、第１及び第２の振動板１－１，１－２の間隔ｄは、第１及び第２の振動板１－１，１－２の最大長さである直径Ｄよりも小さくなっている。したがって、従来のように例えば一つの振動板をバッフル面２１ａと並行となるようにダイナミック型スピーカを配置したものに比べ、第１及び第２の振動板１－１，１－２がバッフル板２１に対して占める面積が小さくなっている。これにより、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板１－１，１－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 1B, the distance d between the first and second diaphragms 1-1 and 1-2 is the maximum length of the first and second diaphragms 1-1 and 1-2. It is smaller than a certain diameter D. Accordingly, the first and second diaphragms 1-1 and 1-2 are baffle plate 21 as compared with the conventional one in which a dynamic speaker is arranged so that one diaphragm is parallel to baffle surface 21a. The area occupied by is smaller. Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
　また、第１及び第２の振動板１－１，１－２の振動方向、及びボイスコイル３１，３１の振動方向が、常に逆になっているので、お互いに振動をキャンセルし、不要な音の発生を低減できる。 In addition, since the vibration directions of the first and second diaphragms 1-1 and 1-2 and the vibration directions of the voice coils 31 and 31 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced.
（第２実施例）本発明の第２実施例のスピーカ装置は図２に示す構造である。このスピーカ装置は、第１の振動板１－１と第２の振動板１－２と、「静止部」としてのキャビネット２を備えている。図２(A) に示すように、キャビネット２は、バッフル板２１、側部２２、背面部２３、ポート部２４及びボックス部２５を有している。第１の振動板１－１と第２の振動板１－２は凹部２Ａ内に位置する。ボックス部２５の側部２２と対向する側には開口部２５ａ，２５ａが形成されており、この開口部２５ａ，２５ａに第１及び第２の振動板１－１，１－２がそれぞれ臨まされている。第１の振動板１－１が音を放射する「音放射方向」は図２(A) に示す矢印Ａ１の方向である。第２の振動板１－２が音を放射する「音放射方向」は図２(A) に示す矢印Ａ２の方向である。 (Second Embodiment) The speaker device of the second embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 2A, the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25. The first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing. The “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
　この第２実施例において第１実施例と異なるところは、バッフル板２１、側部２２、背面部２３及び凹部２Ａの形状である。バッフル板２１には凹部２Ａの開口の部分に放音孔２１ｂが形成されている。２つの側部２２，２２は背面部２３側が接近するように違いに傾斜しており、その分だけ背面部２３も小さくなっている。なお、第１及び第２のダイナミック型スピーカ１０－１，１０－２、第１の駆動部３－１と第２の駆動部３－２の構成、及び作用は第１実施例と同じである。第１実施例と同じ要素は図１と同符号を付記して、以下その重複する説明は省略する。 The second embodiment differs from the first embodiment in the shapes of the baffle plate 21, the side portion 22, the back portion 23, and the recess 2A. The baffle plate 21 is formed with a sound emitting hole 21b at the opening of the recess 2A. The two side portions 22 and 22 are inclined so as to approach the back surface portion 23 side, and the back surface portion 23 is also reduced accordingly. The configurations and operations of the first and second dynamic speakers 10-1 and 10-2, the first drive unit 3-1 and the second drive unit 3-2 are the same as those in the first embodiment. . The same elements as those in the first embodiment are denoted by the same reference numerals as those in FIG.
　以上の構成により、振動板１－１，１－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板１－１の一方向から発せられる音と、第２の振動板１－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。側部２２，２２が傾斜しているので凹部２Ａの周囲も傾斜している。このような凹部２Ａの形状によりＢ１，Ｂ２の方向へ導かれる音に対してホーン効果が得られる。なお、第１の振動板１－１の駆動部３－１側（他の方向）から発せられる音と、第２の振動板１－２の駆動部３－２側（他の方向）から発せられる音は、ポート部２４を通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 With the above configuration, the sound according to the acoustic signal is radiated in the sound radiation directions A1 and A2 due to the vibration of the diaphragms 1-1 and 1-2, and this sound is further detoured in the recess 2A and further B1, Guided in the direction of B2. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a. Since the side portions 22 and 22 are inclined, the periphery of the recess 2A is also inclined. The horn effect is obtained for the sound guided in the direction of B1 and B2 by the shape of the recess 2A. The sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2. The generated sound is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
　図２(B) に示すように、この第２実施例でも、第１及び第２の振動板１－１，１－２の間隔ｄは、第１及び第２の振動板１－１，１－２の最大長さである直径Ｄよりも小さくなっている。したがって、第１及び第２の振動板１－１，１－２がバッフル板２１に対して占める面積が小さくなり、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板１－１，１－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 2B, also in this second embodiment, the distance d between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
　また、第１及び第２の振動板１－１，１－２の振動方向、及びボイスコイル３１，３１の振動方向が、常に逆になっているので、お互いに振動をキャンセルし、不要な音の発生を低減できる。 In addition, since the vibration directions of the first and second diaphragms 1-1 and 1-2 and the vibration directions of the voice coils 31 and 31 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced.
（第３実施例）本発明の第３実施例のスピーカ装置は図３に示す構造である。このスピーカ装置は、第１の振動板１－１と第２の振動板１－２と、「静止部」としてのキャビネット２を備えている。図３(A) に示すように、キャビネット２は、バッフル板２１、側部２２、背面部２３、ポート部２４及びボックス部２５を有している。第１の振動板１－１と第２の振動板１－２は凹部２Ａ内に位置する。ボックス部２５の側部２２と対向する側には開口部２５ａ，２５ａが形成されており、この開口部２５ａ，２５ａに第１及び第２の振動板１－１，１－２がそれぞれ臨まされている。第１の振動板１－１が音を放射する「音放射方向」は図３(A) に示す矢印Ａ１の方向である。第２の振動板１－２が音を放射する「音放射方向」は図３(A) に示す矢印Ａ２の方向である。 (Third Embodiment) A speaker device according to a third embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 3A, the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25. The first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing. The “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
　バッフル板２１は第１実施例と同じであり、側部２２、背面部２３及びポート部２４は第２実施例と同じである。この第３実施例において第１実施例及び第２実施例と異なるところは、ボックス部２５の形状と、一つのダイナミック型スピーカ１０、第１の駆動部３－１と第２の駆動部３－２の構成である。 The baffle plate 21 is the same as that of the first embodiment, and the side portion 22, the back portion 23, and the port portion 24 are the same as those of the second embodiment. The third embodiment differs from the first and second embodiments in the shape of the box portion 25, one dynamic speaker 10, the first drive unit 3-1, and the second drive unit 3- 2 configuration.
　図３(B) に示すように、駆動部３－１，３－２はケース３ａを介してボックス部２５（静止部）にそれぞれ支持されている。駆動部３－１，３－２は、ボイスコイル３１とボイスコイル３１が配置される磁気ギャップ３２Ｇを有する磁気回路３２とを備えている。ボイスコイル３１はボイスコイル支持部３３に支持されている。このボイスコイル３１及びボイスコイル支持部３３は第１実施例と同様であり、ボイスコイル支持部３３の端部に振動板１－１，１－２が結合されている。 As shown in FIG. 3B, the drive units 3-1 and 3-2 are supported by the box unit 25 (stationary unit) via the case 3a. The drive units 3-1 and 3-2 include a voice coil 31 and a magnetic circuit 32 having a magnetic gap 32G in which the voice coil 31 is disposed. The voice coil 31 is supported by the voice coil support portion 33. The voice coil 31 and the voice coil support portion 33 are the same as in the first embodiment, and the diaphragms 1-1 and 1-2 are coupled to the end of the voice coil support portion 33.
　磁気回路３２は、ヨーク３２Ａと磁石３２Ｂとプレート３２Ｃを備えており、プレート３２Ｃの外周面とヨーク３２Ａとの間に磁気ギャップ３２Ｇが形成される。ボイスコイル３１及びボイスコイル支持部３３は、磁気ギャップ３２Ｇ内に配置されている。 The magnetic circuit 32 includes a yoke 32A, a magnet 32B, and a plate 32C, and a magnetic gap 32G is formed between the outer peripheral surface of the plate 32C and the yoke 32A. The voice coil 31 and the voice coil support portion 33 are disposed in the magnetic gap 32G.
　この第３実施例の特徴は、第１の駆動部３－１のヨーク３２Ａと第２の駆動部３－１のヨーク３２Ａとを一体にして、単一ヨーク３２Ｄとしている点である。これにより、第１実施例及び第２実施例よりも、第１の振動板１－１と第２の振動板１－２の対向方向の長さを小さくしたものである。前記実施例と同様に、第１の駆動部３－１と第２の駆動部３－２において、ボイスコイル３１に同じ音響信号が入力されると、ボイスコイル３１及びボイスコイル支持部３３が振動し、これが振動板１－１，１－２を振動させる駆動力になる。 The feature of the third embodiment is that the yoke 32A of the first drive unit 3-1 and the yoke 32A of the second drive unit 3-1 are integrated into a single yoke 32D. As a result, the length in the opposing direction of the first diaphragm 1-1 and the second diaphragm 1-2 is made smaller than in the first and second embodiments. Similar to the above embodiment, when the same acoustic signal is input to the voice coil 31 in the first driving unit 3-1 and the second driving unit 3-2, the voice coil 31 and the voice coil support unit 33 vibrate. This becomes a driving force for vibrating the diaphragms 1-1 and 1-2.
　以上の構成により、前記実施例と同様に、第１及び第２の駆動部３－１，３－２の磁気回路３２に同じ音響信号が供給され、矢印Ｃのように振動板１－１，１－２が互いに近接離間するように振動する。振動板１－１，１－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板１－１の一方向から発せられる音と、第２の振動板１－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。また、第１の振動板１－１の駆動部３－１側（他の方向）から発せられる音と、第２の振動板１－２の駆動部３－２側（他の方向）から発せられる音は、ポート部２４を通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 With the above configuration, the same acoustic signal is supplied to the magnetic circuit 32 of the first and second driving units 3-1 and 3-2 as in the above embodiment, and the diaphragm 1-1 and the diaphragm 1-1 are indicated by arrows C as shown in FIG. 1-2 vibrate so as to be close to and away from each other. The sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a. In addition, the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2. The generated sound is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
　図３(B) に示すように、第１及び第２の振動板１－１，１－２の間隔ｄ１は、第１及び第２の振動板１－１，１－２の最大長さである直径Ｄよりも小さくなっている。さらに、第１の駆動部３－１のヨーク３２Ａと第２の駆動部３－１のヨーク３２Ａとを一体にして、単一ヨーク３２Ｄとしているので、第１及び第２の振動板１－１，１－２の間隔ｄ１は、第１実施例及び第２実施例の間隔ｄよりも小さくなっている。したがって、第１及び第２の振動板１－１，１－２がバッフル板２１に対して占める面積がさらに小さくなり、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板１－１，１－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 3B, the distance d1 between the first and second diaphragms 1-1 and 1-2 is the maximum length of the first and second diaphragms 1-1 and 1-2. It is smaller than a certain diameter D. Further, since the yoke 32A of the first drive unit 3-1 and the yoke 32A of the second drive unit 3-1 are integrated into a single yoke 32D, the first and second diaphragms 1-1 are formed. , 1-2 is smaller than the distance d between the first and second embodiments. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
　また、第１及び第２の振動板１－１，１－２の振動方向、及びボイスコイル３１，３１の振動方向が、常に逆になっているので、お互いに振動をキャンセルし、不要な音の発生を低減できる。 In addition, since the vibration directions of the first and second diaphragms 1-1 and 1-2 and the vibration directions of the voice coils 31 and 31 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced.
（第４実施例）本発明の第４実施例のスピーカ装置は図４に示す構造である。このスピーカ装置は、第１の振動板１－１と第２の振動板１－２と、「静止部」としてのキャビネット２を備えている。図４(A) に示すように、キャビネット２は、バッフル板２１、側部２２、背面部２３、ポート部２４及びボックス部２５を有している。さらに、ポート部２４を後方に延設したダクト部２４ａと、バッフル板２１に開口するバスレフポート２６を有している。第１の振動板１－１と第２の振動板１－２は凹部２Ａ内に位置する。ボックス部２５の側部２２と対向する側には開口部２５ａ，２５ａが形成されており、この開口部２５ａ，２５ａに第１及び第２の振動板１－１，１－２がそれぞれ臨まされている。第１の振動板１－１が音を放射する「音放射方向」は図４(A) に示す矢印Ａ１の方向である。第２の振動板１－２が音を放射する「音放射方向」は図４(A) に示す矢印Ａ２の方向である。 (Fourth Embodiment) A speaker device according to a fourth embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 4A, the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25. Furthermore, a duct portion 24 a having a port portion 24 extending rearward and a bass reflex port 26 that opens to the baffle plate 21 are provided. The first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing. The “sound radiation direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
　この第４実施例において第３実施例と異なるところは、キャビネット２にダクト部２４ａとバスレフポート２６を有する点であり、一つのダイナミック型スピーカ１０、第１の駆動部３－１と第２の駆動部３－２の構成、及び作用は第３実施例と同じであり、重複する説明は省略する。 The fourth embodiment is different from the third embodiment in that the cabinet 2 has a duct portion 24a and a bass reflex port 26. One dynamic speaker 10, a first drive portion 3-1, and a second drive portion 3-1. The configuration and operation of the drive unit 3-2 are the same as those in the third embodiment, and a duplicate description is omitted.
　以上の構成により、前記実施例と同様に、第１及び第２の駆動部３－１，３－２の磁気回路３２に同じ音響信号が供給され。矢印Ｃのように振動板１－１，１－２が互いに近接離間するように振動する。振動板１－１，１－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板１－１の一方向から発せられる音と、第２の振動板１－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。 With the above configuration, the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2 as in the above embodiment. As indicated by the arrow C, the diaphragms 1-1 and 1-2 vibrate so as to approach and separate from each other. The sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
　また、第１の振動板１－１の駆動部３－１側（他の方向）から発せられる音と、第２の振動板１－２の駆動部３－２側（他の方向）から発せられる音は、ポート部２４及びダクト２４ａを通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。このダクト２４ａから放出された音のうち、その低音成分は十分回折して、バスレフポート２６からさらにバッフル面２１ａの方向へと導かれる。これにより、バスレフの効果が得られる。 In addition, the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2. The generated sound is guided through the port portion 24 and the duct 24a in the direction of the arrow B3 opposite to the direction of the baffle surface 21a. Of the sound emitted from the duct 24a, the low-frequency component is sufficiently diffracted and guided further from the bass reflex port 26 toward the baffle surface 21a. Thereby, a bass reflex effect is obtained.
　図４(B) に示すように、この第４実施例でも、第１及び第２の振動板１－１，１－２の間隔ｄ１は、第１及び第２の振動板１－１，１－２の最大長さである直径Ｄよりも小さくなっている。さらに、第３実施例と同様に、２つのヨークを一体にしているので、上記間隔ｄ１は、第１実施例及び第２実施例の間隔ｄよりも小さくなっている。したがって、第１及び第２の振動板１－１，１－２がバッフル板２１に対して占める面積がさらに小さくなり、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板１－１，１－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 4B, also in the fourth embodiment, the distance d1 between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Furthermore, since the two yokes are integrated as in the third embodiment, the distance d1 is smaller than the distance d between the first and second embodiments. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
　また、第１及び第２の振動板１－１，１－２の振動方向、及びボイスコイル３１，３１の振動方向が、常に逆になっているので、お互いに振動をキャンセルし、不要な音の発生を低減できる。 In addition, since the vibration directions of the first and second diaphragms 1-1 and 1-2 and the vibration directions of the voice coils 31 and 31 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced.
（第５実施例）本発明の第５実施例のスピーカ装置は図５に示す構造である。このスピーカ装置は、第１の振動板４－１と第２の振動板４－２と、「静止部」としてのキャビネット２を備えている。図５(A) に示すように、キャビネット２は、バッフル板２１、側部２２、背面部２３及びボックス部２７を有している。第１の振動板４－１と第２の振動板４－２は凹部２Ａ内に位置する。第１の振動板４－１が音を放射する「音放射方向」は図５(A) に示す矢印Ａ１の方向である。第２の振動板４－２が音を放射する「音放射方向」は図５(A) に示す矢印Ａ２の方向である。 (Fifth Embodiment) A speaker apparatus according to a fifth embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 5A, the cabinet 2 includes a baffle plate 21, side portions 22, a back surface portion 23, and a box portion 27. The first diaphragm 4-1 and the second diaphragm 4-2 are located in the recess 2A. The “sound radiating direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
　この第５実施例において第４実施例と異なるところは、バッフル板２１に放音孔が形成されていないことと、ボックス部２７が薄型形状であることと、ダイナミック型スピーカに代えて薄型スピーカ２０を用いている点である。ボックス部２７はバッフル板２１側が封止されていて、側部２２と対向する側には開口部２７ａ，２７ａが形成されている。この開口部２７ａ，２７ａに薄型スピーカ２０の第１及び第２の振動板４－１，４－２がそれぞれ臨まされている。また、ボックス部２７の背面板２３側の部分はポート部２７ｂとなっている。 The fifth embodiment differs from the fourth embodiment in that no sound emission holes are formed in the baffle plate 21, the box portion 27 has a thin shape, and the thin speaker 20 instead of the dynamic speaker. It is a point using. The box portion 27 is sealed on the baffle plate 21 side, and openings 27 a and 27 a are formed on the side facing the side portion 22. The first and second diaphragms 4-1 and 4-2 of the thin speaker 20 face the openings 27a and 27a, respectively. The portion of the box portion 27 on the back plate 23 side is a port portion 27b.
　図５(B) に示すように、薄型スピーカ２０は第１及び第２の振動板４－１，４－２、第１及び第２の駆動部５－１，５－２を有している。振動板４－１，４－２の外周部はエッジ４ａ１，４ａ２を介してフレーム２０ａ，２０ａに支持されている。フレーム２０ａには、第１及び第２の振動板４－１，４－２の振動による裏側からの音を放射する放射孔２０ｂが形成されている。 As shown in FIG. 5B, the thin speaker 20 includes first and second diaphragms 4-1, 4-2, and first and second drive units 5-1, 5-2. . The outer peripheral portions of the diaphragms 4-1 and 4-2 are supported by the frames 20a and 20a via the edges 4a1 and 4a2. The frame 20a is formed with a radiation hole 20b that radiates sound from the back side due to the vibration of the first and second diaphragms 4-1, 4-2.
　駆動部５－１，５－２は、フレーム２０ａの側壁から延設された装着部２０ｃで保持されている。駆動部５－１，５－２は、ボイスコイル支持部５３に巻回されたボイスコイル５１と、磁気ギャップ５２Ｇを有する磁気回路５２とを備えている。ボイスコイル支持部５３は板形状である。磁気回路５２は、複数の磁石５２１～５２４及びヨーク５２５を有する。磁石５２１，５２３、磁石５２２，５２４が、磁気ギャップ５２Ｇの磁場の方向に沿った両側に設けられている。例えば磁気ギャップ５２Ｇは、ボイスコイル５１が所定方向に沿って規定範囲内で移動することができるように溝形状に形成されている。ボイスコイル支持部５３と振動板４－１，４－２とは、リンク機構６を介して接続されている。 The driving portions 5-1 and 5-2 are held by a mounting portion 20c extending from the side wall of the frame 20a. The drive units 5-1 and 5-2 include a voice coil 51 wound around a voice coil support unit 53 and a magnetic circuit 52 having a magnetic gap 52G. The voice coil support portion 53 has a plate shape. The magnetic circuit 52 includes a plurality of magnets 521 to 524 and a yoke 525. Magnets 521 and 523 and magnets 522 and 524 are provided on both sides of the magnetic gap 52G along the direction of the magnetic field. For example, the magnetic gap 52G is formed in a groove shape so that the voice coil 51 can move within a specified range along a predetermined direction. The voice coil support portion 53 and the diaphragms 4-1 and 4-2 are connected via the link mechanism 6.
　リンク機構６は、リンク部材６Ａ～６Ｄを有しており、このリンク部材６Ａ～６Ｄは関節部６ａ～６ｄを有している。リンク部材６Ａ，６Ｂは関節部６ａ，６ｂを介して振動板４－１，４－２にそれぞれ接続されている。リンク部材６Ｃ，６Ｄは関節部６ｃ，６ｄを介して振動板４－１，４－２にそれぞれ接続されている。リンク部材６Ａ，６Ｂは関節部６ｅを介して第１の駆動部５－１側のボイスコイル支持部５３に接続されている。リンク部材６Ｃ，６Ｄは関節部６ｆを介して第２の駆動部５－２側のボイスコイル支持部５３に接続されている。関節部６ａ～６ｆは、それぞれリンク部材６Ａ～６Ｄを他の部分に対して角度変更自在に支持又は連結する部分である。 The link mechanism 6 has link members 6A to 6D, and the link members 6A to 6D have joint portions 6a to 6d. The link members 6A and 6B are connected to the diaphragms 4-1 and 4-2 through joint portions 6a and 6b, respectively. The link members 6C and 6D are connected to the diaphragms 4-1 and 4-2 through joint portions 6c and 6d, respectively. The link members 6A and 6B are connected to the voice coil support portion 53 on the first drive portion 5-1 side via the joint portion 6e. The link members 6C and 6D are connected to the voice coil support portion 53 on the second drive portion 5-2 side through the joint portion 6f. The joint portions 6a to 6f are portions that support or connect the link members 6A to 6D with respect to other portions so that the angle can be changed.
　以上の構成により、第１及び第２の駆動部５－１，５－２の磁気回路５２に同じ音響信号が供給される。これにより、それぞれのボイスコイル支持部５３，５３が逆方向に直線運動して振動する。リンク機構６のリンク部材６Ａ～６Ｄはボイスコイル支持部５３，５３の振動を振動板４－１，４－２に伝達し、振動板４－１，４－２は矢印Ｃのように振動する。すなわち、振動板４－１，４－２が互いに近接離間するように振動する。 With the above configuration, the same acoustic signal is supplied to the magnetic circuits 52 of the first and second drive units 5-1 and 5-2. Thereby, each voice coil support part 53 and 53 carries out a linear motion to a reverse direction, and vibrates. The link members 6A to 6D of the link mechanism 6 transmit the vibration of the voice coil support portions 53, 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by the arrow C. . That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
　振動板４－１，４－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２（図５(A) ）の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板４－１の一方向から発せられる音と、第２の振動板４－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。また、第１の振動板４－１の駆動部５側（他の方向）から発せられる音と、第２の振動板４－２の駆動部５側（他の方向）から発せられる音は、放射孔２０ｂ及びポート部２７ｂを通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 The sound corresponding to the acoustic signal is radiated in the direction of the sound radiation direction A1, A2 (FIG. 5 (A)) by the vibration of the diaphragms 4-1 and 4-2, and this sound further bypasses the recess 2A. Guided in the direction of B1 and B2. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a. Further, the sound emitted from the drive unit 5 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 5 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 20b and the port portion 27b.
　図５(B) に示すように、第１及び第２の振動板４－１，４－２の間隔ｄ２は、第１及び第２の振動板４－１，４－２の長さＤ２よりも小さくなっている。したがって、薄型スピーカ２０をバッフル面２１ａと並行となるように配置する場合に比べ、第１及び第２の振動板４－１，４－２がバッフル板２１に対して占める面積が小さくなっている。これにより、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板４－１，４－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 5B, the distance d2 between the first and second diaphragms 4-1, 4-2 is greater than the length D2 of the first and second diaphragms 4-1, 4-2. Is also getting smaller. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 20 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
　また、第１及び第２の振動板４－１，４－２の振動方向、及びボイスコイル５１，５１の振動方向が、常に逆になっているので、お互いに振動をキャンセルし、不要な音の発生を低減できる。なお、ボイスコイル５１の振動方向とバッフル面２１ａとは垂直である。この例では、正確に垂直であるが、僅かに傾斜していてもよい。「略垂直」の概念は正確に垂直である場合と、僅かに傾斜している場合との、いずれも含む。 In addition, since the vibration directions of the first and second diaphragms 4-1 and 4-2 and the vibration directions of the voice coils 51 and 51 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced. The vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other. In this example, it is exactly vertical, but may be slightly inclined. The concept of “substantially vertical” includes both the case of being exactly vertical and the case of being slightly inclined.
（第６実施例）本発明の第６実施例のスピーカ装置は図６に示す構造である。このスピーカ装置は、第１の振動板４－１と第２の振動板４－２と、「静止部」としてのキャビネット２を備えている。図６(A) に示すように、キャビネット２は第５実施例と同じである。第５実施例と同じ要素は図５と同符号を付記してその重複する説明は省略する。ボックス部２５の側部２２と対向する側には開口部２７ａ，２７ａが形成されており、この開口部２７ａ，２７ａに第１及び第２の振動板４－１，４－２がそれぞれ臨まされている。第１の振動板４－１が音を放射する「音放射方向」は図６(A) に示す矢印Ａ１の方向である。第２の振動板４－２が音を放射する「音放射方向」は図６(A) に示す矢印Ａ２の方向である。 (Sixth Embodiment) A speaker device according to a sixth embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 6A, the cabinet 2 is the same as that in the fifth embodiment. The same elements as those in the fifth embodiment are denoted by the same reference numerals as those in FIG. Openings 27a and 27a are formed on the side of the box portion 25 that faces the side portion 22, and the first and second diaphragms 4-1 and 4-2 face the openings 27a and 27a, respectively. ing. The “sound radiating direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
　この第６実施例において第５実施例と異なるところは、駆動部５が一つだけの薄型スピーカ３０を用いている点である。図６(B) に示すように、薄型スピーカ３０は第１及び第２の振動板４－１，４－２と、一つの駆動部５を有している。この駆動部５は第５実施例の第１の駆動部５－１と同じである。 This sixth embodiment is different from the fifth embodiment in that the drive unit 5 uses only one thin speaker 30. As shown in FIG. 6B, the thin speaker 30 includes first and second diaphragms 4-1, 4-2 and one drive unit 5. The drive unit 5 is the same as the first drive unit 5-1 of the fifth embodiment.
　駆動部５のボイスコイル支持部５３と振動板４－１，４－２とは、リンク機構７を介して接続されている。リンク機構７はリンク部材７Ａ～７Ｄを有しており、このリンク部材７Ａ～７Ｄは関節部７ａ～７ｄを有している。リンク部材７Ａ，７Ｂは関節部７ａ，７ｂを介して振動板４－１，４－２にそれぞれ接続されている。リンク部材７Ｃ，７Ｄは関節部７ｃ，７ｄを介して振動板４－１，４－２にそれぞれ接続されている。リンク部材７Ａ，７Ｂは関節部７ｅを介してボイスコイル支持部５３に接続されている。リンク部材７Ｃ，７Ｄは関節部７ｆを介してボイスコイル支持部５３に接続されている。関節部７ａ～７ｆは、それぞれリンク部材７Ａ～７Ｄを他の部分に対して角度変更自在に支持又は連結する部分である。 The voice coil support portion 53 of the drive unit 5 and the diaphragms 4-1 and 4-2 are connected via the link mechanism 7. The link mechanism 7 has link members 7A to 7D, and the link members 7A to 7D have joint portions 7a to 7d. The link members 7A and 7B are connected to the diaphragms 4-1 and 4-2 through joint portions 7a and 7b, respectively. The link members 7C and 7D are connected to the diaphragms 4-1 and 4-2 through joint portions 7c and 7d, respectively. The link members 7A and 7B are connected to the voice coil support portion 53 via the joint portion 7e. The link members 7C and 7D are connected to the voice coil support portion 53 via the joint portion 7f. The joint portions 7a to 7f are portions that support or connect the link members 7A to 7D with respect to other portions so that the angle can be changed.
　以上の構成により、駆動部５の磁気回路５２に音響信号が供給される。これにより、ボイスコイル５１及びボイスコイル支持部５３が直線運動して振動する。リンク機構７のリンク部材７Ａ～７Ｄはボイスコイル支持部５３の振動を振動板４－１，４－２に伝達し、振動板４－１，４－２は矢印Ｃのように振動する。すなわち、振動板４－１，４－２が互いに近接離間するように振動する。ボイスコイル５１の振動方向とバッフル面２１ａとは垂直である。 With the above configuration, an acoustic signal is supplied to the magnetic circuit 52 of the drive unit 5. Thereby, the voice coil 51 and the voice coil support part 53 vibrate by linear movement. The link members 7A to 7D of the link mechanism 7 transmit the vibration of the voice coil support portion 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by the arrow C. That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other. The vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other.
　振動板４－１，４－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２（図６(A) ）の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板４－１の一方向から発せられる音と、第２の振動板４－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。また、第１の振動板４－１の駆動部５側（他の方向）から発せられる音と、第２の振動板４－２の駆動部５側（他の方向）から発せられる音は、放射孔２０ｂ及びポート部２７ｂを通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 The sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 (FIG. 6 (A)) due to the vibration of the diaphragms 4-1 and 4-2, and this sound further bypasses the recess 2A. Guided in the direction of B1 and B2. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a. Further, the sound emitted from the drive unit 5 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 5 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 20b and the port portion 27b.
　図６(B) に示すように、第１及び第２の振動板４－１，４－２の間隔ｄ２は、第１及び第２の振動板４－１，４－２の長さＤ２よりも小さくなっている。したがって、薄型スピーカ２０をバッフル面２１ａと並行となるように配置する場合に比べ、第１及び第２の振動板４－１，４－２がバッフル板２１に対して占める面積が小さくなっている。これにより、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板４－１，４－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 6B, the distance d2 between the first and second diaphragms 4-1, 4-2 is greater than the length D2 of the first and second diaphragms 4-1, 4-2. Is also getting smaller. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 20 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
（第７実施例）本発明の第７実施例のスピーカ装置は図７に示す構造である。このスピーカ装置は、第１の振動板１－１と第２の振動板１－２と、「静止部」としてのキャビネット２を備えている。図７(A) に示すように、この第７実施例のキャビネット２において、バッフル板２１、側部２２、背面部２３及びポート部２４は、第３実施例（図３(A) ）と同じである。ボックス部２５は第１実施例（図１(A) ）と同じである。 (Seventh Embodiment) A speaker device according to a seventh embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”. As shown in FIG. 7A, in the cabinet 2 of the seventh embodiment, the baffle plate 21, the side portion 22, the back portion 23, and the port portion 24 are the same as those in the third embodiment (FIG. 3A). It is. The box portion 25 is the same as that in the first embodiment (FIG. 1A).
　ボックス部２５内には第１及び第２のダイナミック型スピーカ１０－１，１０－２が配設されている。第１実施例では、２つのダイナミック型スピーカ１０－１，１０－２は互いに逆向きに並行に配置されているが、第７実施例の２つのダイナミック型スピーカ１０－１，１０－２は互いに逆向きで逆方向に僅かに傾斜して配置されている。すなわち、それぞれの振動板１－１，１－２の振動方向の軸が僅かに角度を成している。ボックス部２５の側部２２と対向する側には開口部２５ａ，２５ａが形成されており、この開口部２５ａ，２５ａに第１及び第２の振動板１－１，１－２がそれぞれ臨まされている。第１及び第２のダイナミック型スピーカ１０－１，１０－２の個々の構成作用は第１実施例と同じであり、重複する説明は省略する。この第７実施例では、第１の振動板１－１が音を放射する「音放射方向」は図７(A) に示す矢印Ａ１の方向である。第２の振動板１－２が音を放射する「音放射方向」は図７(A) に示す矢印Ａ２の方向である。 In the box section 25, first and second dynamic speakers 10-1 and 10-2 are arranged. In the first embodiment, the two dynamic speakers 10-1 and 10-2 are arranged in parallel in opposite directions, but the two dynamic speakers 10-1 and 10-2 in the seventh embodiment are mutually connected. It is arranged in a reverse direction and slightly inclined in the reverse direction. In other words, the vibration direction axes of the diaphragms 1-1 and 1-2 are slightly angled. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing. The individual constituent actions of the first and second dynamic speakers 10-1 and 10-2 are the same as those in the first embodiment, and a duplicate description is omitted. In the seventh embodiment, the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
　以上の構成により、第１実施例と同様に、第１及び第２の駆動部３－１，３－２の磁気回路３２に同じ音響信号が供給され。矢印Ｃのように振動板１－１，１－２が互いに近接離間するように振動する。振動板１－１，１－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板１－１の一方向から発せられる音と、第２の振動板１－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。また、第１の振動板１－１の駆動部３－１側（他の方向）から発せられる音と、第２の振動板１－２の駆動部３－２側（他の方向）から発せられる音は、ポート部２４を通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 With the above configuration, the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2 as in the first embodiment. As indicated by the arrow C, the diaphragms 1-1 and 1-2 vibrate so as to approach and separate from each other. The sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a. In addition, the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2. The generated sound is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
　図７(B) に示すように、この第７実施例でも、第１及び第２の振動板１－１，１－２の間隔ｄ３は、第１及び第２の振動板１－１，１－２の最大長さである直径Ｄよりも小さくなっている。したがって、第１及び第２の振動板１－１，１－２がバッフル板２１に対して占める面積がさらに小さくなり、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板１－１，１－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 As shown in FIG. 7B, also in this seventh embodiment, the distance d3 between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
　また、第１及び第２の振動板１－１，１－２の振動方向、及びボイスコイル３１，３１の振動方向が僅かに傾斜しているが、その振動による部材の移動量の大半は、常に逆になっているので、お互いに振動を概ねキャンセルし、不要な音の発生を低減できる。 Further, the vibration direction of the first and second diaphragms 1-1 and 1-2 and the vibration direction of the voice coils 31 and 31 are slightly inclined, but most of the movement amount of the member due to the vibration is as follows. Since the directions are always reversed, it is possible to substantially cancel vibrations from each other and reduce the generation of unnecessary sounds.
（第８実施例）本発明の第８実施例のスピーカ装置は図８に示す構造である。このスピーカ装置は、第１の振動板４－１と第２の振動板４－２と、「静止部」としてのキャビネット２を備えている。キャビネット２は、バッフル面２１ａを有するバッフル板２１、側部２２、背面部２３、ポート部２４及びボックス部２８を有している。２つの側部２２，２２は背面部２３側が接近するように違いに傾斜しており、その後端部に背面部２３が位置する。側部２２，２２の内側はバッフル面２１ａに開口した１つの凹部２Ａとなっている。第１の振動板４－１と第２の振動板４－２は凹部２Ａ内に位置する。ボックス部２８の側部２２と対向する側には開口部２８ａ，２８ａが形成されており、この開口部２８ａ，２８ａに第１及び第２の振動板４－１，４－２がそれぞれ臨まされている。第１の振動板４－１が音を放射する「音放射方向」は図８に示す矢印Ａ１の方向である。第２の振動板４－２が音を放射する「音放射方向」は図８に示す矢印Ａ２の方向である。 (Eighth Embodiment) A speaker apparatus according to an eighth embodiment of the present invention has a structure shown in FIG. This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”. The cabinet 2 includes a baffle plate 21 having a baffle surface 21 a, a side portion 22, a back surface portion 23, a port portion 24 and a box portion 28. The two side portions 22 and 22 are inclined so as to approach the back surface portion 23 side, and the back surface portion 23 is located at the rear end portion. The insides of the side portions 22 and 22 form one concave portion 2A opened in the baffle surface 21a. The first diaphragm 4-1 and the second diaphragm 4-2 are located in the recess 2A. Openings 28a, 28a are formed on the side of the box portion 28 that faces the side portion 22, and the first and second diaphragms 4-1, 4-2 are respectively exposed to the openings 28a, 28a. ing. The “sound radiation direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG. The “sound radiation direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
　この第８実施例では、駆動部５が一つだけで、振動板４－１，４－２が僅かに傾斜したの薄型スピーカ４０を用いている。薄型スピーカ４０は第１及び第２の振動板４－１，４－２と、一つの駆動部５を有している。振動板４－１，４－２の外周部はエッジ４ａ１，４ａ２を介してボックス部２８とポート部２４内に配設したフレーム４０ａに支持されている。フレーム４０ａには、第１及び第２の振動板４－１，４－２の振動による裏側からの音を放射する放射孔４０ｂが形成されている。この駆動部５は第５実施例の第１の駆動部５－１と同じであり、駆動部５－１と同じ要素には図５と同符号を付記しその重複する説明は省略する。 In the eighth embodiment, a thin speaker 40 having only one drive unit 5 and slightly oscillating diaphragms 4-1, 4-2 is used. The thin speaker 40 includes first and second diaphragms 4-1 and 4-2 and a single drive unit 5. The outer peripheral portions of the diaphragms 4-1 and 4-2 are supported by a frame 40a disposed in the box portion 28 and the port portion 24 via edges 4a1 and 4a2. The frame 40a is formed with a radiation hole 40b that radiates sound from the back side due to the vibration of the first and second diaphragms 4-1, 4-2. The drive unit 5 is the same as the first drive unit 5-1 of the fifth embodiment, and the same elements as those of the drive unit 5-1 are denoted by the same reference numerals as those in FIG.
　駆動部５のボイスコイル支持部５３と振動板４－１，４－２とは、リンク機構８を介して接続されている。リンク機構８はリンク部材８Ａ～８Ｄを有しており、このリンク部材８Ａ～８Ｄは関節部８ａ～８ｄを有している。リンク部材８Ａ，８Ｂは関節部８ａ，８ｂを介して振動板４－１，４－２にそれぞれ接続されている。リンク部材８Ｃ，８Ｄは関節部８ｃ，８ｄを介して振動板４－１，４－２にそれぞれ接続されている。リンク部材８Ａ，８Ｂは関節部８ｅを介してボイスコイル支持部５３に接続されている。リンク部材８Ｃ，８Ｄは関節部８ｆを介してボイスコイル支持部５３に接続されている。関節部８ａ～８ｆは、それぞれリンク部材８Ａ～８Ｄを他の部分に対して角度変更自在に支持又は連結する部分である。 The voice coil support part 53 of the driving part 5 and the diaphragms 4-1 and 4-2 are connected via a link mechanism 8. The link mechanism 8 has link members 8A to 8D, and the link members 8A to 8D have joint portions 8a to 8d. The link members 8A and 8B are connected to the diaphragms 4-1 and 4-2 through joint portions 8a and 8b, respectively. The link members 8C and 8D are connected to the diaphragms 4-1 and 4-2 through joint portions 8c and 8d, respectively. The link members 8A and 8B are connected to the voice coil support portion 53 via the joint portion 8e. The link members 8C and 8D are connected to the voice coil support portion 53 via the joint portion 8f. The joint portions 8a to 8f are portions that support or connect the link members 8A to 8D with respect to other portions so that the angles can be changed.
　以上の構成により、駆動部５の磁気回路５２に音響信号が供給される。これにより、ボイスコイル５１及びボイスコイル支持部５３が直線運動して振動する。リンク機構８のリンク部材８Ａ～８Ｄはボイスコイル支持部５３の振動を振動板４－１，４－２に伝達し、振動板４－１，４－２は矢印Ｃのように振動する。すなわち、振動板４－１，４－２が互いに近接離間するように振動する。ボイスコイル５１の振動方向とバッフル面２１ａとは垂直である。 With the above configuration, an acoustic signal is supplied to the magnetic circuit 52 of the drive unit 5. Thereby, the voice coil 51 and the voice coil support part 53 vibrate by linear movement. The link members 8A to 8D of the link mechanism 8 transmit the vibration of the voice coil support portion 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by an arrow C. That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other. The vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other.
　振動板４－１，４－２の振動により音響信号に応じた音が、音放射方向Ａ１，Ａ２の方向に放射され、この音は凹部２Ａ内で迂回してさらにＢ１，Ｂ２の方向へ導かれる。すなわち、第１の振動板４－１の一方向から発せられる音と、第２の振動板４－２の一方向から発せられる音は、バッフル面２１ａの方向へと導かれる。また、第１の振動板４－１の駆動部６側（他の方向）から発せられる音と、第２の振動板４－２の駆動部６側（他の方向）から発せられる音は、放射孔４０ｂ及びポート部２４を通ってバッフル面２１ａの方向とは反対の矢印Ｂ３の方向に導かれる。 The sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibration of the diaphragms 4-1 and 4-2, and this sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a. Further, the sound emitted from the drive unit 6 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 6 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 40b and the port portion 24.
　第１及び第２の振動板４－１，４－２の間隔ｄ４は、第１及び第２の振動板４－１，４－２の長さＤ３よりも小さくなっている。したがって、薄型スピーカ４０をバッフル面２１ａと並行となるように配置する場合に比べ、第１及び第２の振動板４－１，４－２がバッフル板２１に対して占める面積が小さくなっている。これにより、占有スペースが限られた場所に設置するのに適している。取り付け面積に制約があっても、第１及び第２の振動板４－１，４－２により振動板の面積を十分に大きくすることができ、十分な音圧を得ることができる。 The distance d4 between the first and second diaphragms 4-1, 4-2 is smaller than the length D3 of the first and second diaphragms 4-1, 4-2. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 40 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
　以上、本発明の実施の形態について図面を参照して詳述してきたが、具体的な構成はこれらの実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。駆動部は磁気回路によってボイスコイルを駆動する構成のみを開示したが、駆動部としては他に圧電素子、磁歪素子、人工筋肉等でもよい。上述の各図で示した実施の形態は、その目的及び構成等に特に矛盾や問題がない限り、互いの記載内容を組み合わせることが可能である。また、各図の記載内容はそれぞれ独立した実施形態になり得るものであり、本発明の実施形態は各図を組み合わせた一つの実施形態に限定されるものではない。 As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. Although only the configuration in which the driving unit drives the voice coil by a magnetic circuit is disclosed, the driving unit may be a piezoelectric element, a magnetostrictive element, an artificial muscle, or the like. The embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose, configuration, or the like. Moreover, the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.
Ａ１　　音放射方向
Ａ２　　音放射方向
１－１　第１の振動板
１－２　第２の振動板
２　　　キャビネット（静止部）
２１　　バッフル板
２１ａ　バッフル面
２Ａ　　凹部
２６　　バスレフポート
３－１　駆動部
３－２　駆動部
３１　　ボイスコイル
３２Ｇ　磁気ギャップ
３２　　磁気回路
３２Ｂ　磁石
３３　　ボイスコイル支持部
４－１　第１の振動板
４－２　第２の振動板
５　　　駆動部
５－１　駆動部
５－２　駆動部
５３　　ボイスコイル支持部
５１　　ボイスコイル
５２Ｇ　磁気ギャップ
５２　　磁気回路
５２１～５２４　磁石
６Ａ～６Ｄ　リンク部材
６ａ～６ｆ　関節部
７Ａ～７Ｄ　リンク部材
７ａ～７ｆ　関節部
８Ａ～８Ｄ　リンク部材
８ａ～８ｆ　関節部 A1 Sound radiation direction A2 Sound radiation direction 1-1 First diaphragm 1-2 Second diaphragm 2 Cabinet (stationary part)
21 Baffle plate 21a Baffle surface 2A Concavity 26 Bass reflex port 3-1 Drive unit 3-2 Drive unit 31 Voice coil 32G Magnetic gap 32 Magnetic circuit 32B Magnet 33 Voice coil support unit 4-1 First diaphragm 4-2 Second Diaphragm 5 Driving section 5-1 Driving section 5-2 Driving section 53 Voice coil support section 51 Voice coil 52G Magnetic gap 52 Magnetic circuits 521 to 524 Magnets 6A to 6D Link members 6a to 6f Joint sections 7A to 7D Link member 7a ~ 7f Joint part 8A ~ 8D Link member 8a ~ 8f Joint part

Claims (10)

  1. 　バッフル面を含む静止部と、
    　前記バッフル面側及びその反対側とは異なった方向に音を発する第１の振動板と、
    　前記バッフル面側及びその反対側とは異なった方向で前記第１の振動板とは異なった方向に音を発する第２の振動板と、
    　前記静止部に直接または他の部材を介して支持され、前記第１及び前記第２の振動板を駆動する駆動部と、
    を備え、
    　前記バッフル面に１つの凹部が開口し、当該凹部に前記第１の振動板と前記第２の振動板が位置するとともに、
    　前記第１の振動板と前記第２の振動板とが互いに近接離間するように振動することを特徴とするスピーカ装置。     A stationary part including a baffle surface;
    A first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side;
    A second diaphragm that emits sound in a direction different from the first diaphragm in a direction different from the baffle surface side and the opposite side;
    A driving unit that is supported by the stationary unit directly or via another member and drives the first and second diaphragms;
    With
    One recess is opened in the baffle surface, and the first diaphragm and the second diaphragm are located in the recess,
    The speaker device, wherein the first diaphragm and the second diaphragm vibrate so as to be close to and away from each other.
  2. 　前記第１の振動板の一方向から発せられる音と、
    　前記第２の振動板の一方向から発せられる音は、
    　前記バッフル面方向へと導かれることを特徴とする請求項１に記載のスピーカ装置。     A sound emitted from one direction of the first diaphragm;
    The sound emitted from one direction of the second diaphragm is
    The speaker device according to claim 1, wherein the speaker device is guided toward the baffle surface.
  3. 　前記第１の振動板の他の方向から発せられる音と、
    　前記第２の振動板の他の方向から発せられる音は、
    　前記バッフル面方向とは反対の方向に導かれることを特徴とする請求項２に記載のスピーカ装置。     Sounds emitted from other directions of the first diaphragm;
    The sound emitted from the other direction of the second diaphragm is
    The speaker device according to claim 2, wherein the speaker device is guided in a direction opposite to the baffle surface direction.
  4. 　前記バッフル面にバスレフ孔が形成されており、前記バッフル面方向とは反対の方向に導かれた音はさらに前記バッフル面のバスレフ孔方向に導かれることを特徴とする請求項３に記載のスピーカ装置。 4. The speaker according to claim 3, wherein a bass reflex hole is formed in the baffle surface, and the sound guided in a direction opposite to the baffle surface direction is further guided in a bass reflex direction of the baffle surface. apparatus.
  5. 　前記第１の振動板の音放射方向と前記第２の振動板の音放射方向とが略逆向きであることを特徴とする請求項１に記載のスピーカ装置。 The speaker device according to claim 1, wherein the sound radiation direction of the first diaphragm and the sound radiation direction of the second diaphragm are substantially opposite to each other.
  6. 　前記第１の振動板の音放射方向及び前記第２の音放射方向は、前記バッフル面と略並行であることを特徴とする請求項５に記載のスピーカ装置。 6. The speaker device according to claim 5, wherein the sound radiation direction and the second sound radiation direction of the first diaphragm are substantially parallel to the baffle surface.
  7. 　前記振動板間の距離は前記振動板の最大長さよりも小さいことを特徴とする請求項１に記載のスピーカ装置。 The speaker device according to claim 1, wherein a distance between the diaphragms is smaller than a maximum length of the diaphragms.
  8. 　前記駆動部は、
    　磁石と、
    　ボイルコイルと、
    　ボイスコイルを支持するボイスコイル支持部材と、
    　前記ボイスコイルが位置する磁気ギャップと、
    を備えることを特徴とする請求項１に記載のスピーカ装置。     The drive unit is
    A magnet,
    A boil coil,
    A voice coil support member that supports the voice coil;
    A magnetic gap in which the voice coil is located;
    The speaker device according to claim 1, further comprising:
  9. 　前記ボイスコイル支持部材と前記第１の振動板及び前記第２の振動板とを接続する、
    関節部を有するリンク部材を備えることを特徴とする請求項８に記載のスピーカ装置。     Connecting the voice coil support member to the first diaphragm and the second diaphragm;
    The speaker device according to claim 8, further comprising a link member having a joint portion.
  10. 　前記ボイスコイルの振動方向は前記バッフル面とは略垂直であることを特徴とする請求項９に記載のスピーカ装置。 The speaker device according to claim 9, wherein the vibration direction of the voice coil is substantially perpendicular to the baffle surface.
PCT/JP2012/082346 2012-12-13 2012-12-13 Speaker device WO2014091598A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/082346 WO2014091598A1 (en) 2012-12-13 2012-12-13 Speaker device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/082346 WO2014091598A1 (en) 2012-12-13 2012-12-13 Speaker device

Publications (1)

Publication Number Publication Date
WO2014091598A1 true WO2014091598A1 (en) 2014-06-19

Family

ID=50933919

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/082346 WO2014091598A1 (en) 2012-12-13 2012-12-13 Speaker device

Country Status (1)

Country Link
WO (1) WO2014091598A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017104118A1 (en) * 2015-12-17 2017-06-22 パナソニックＩｐマネジメント株式会社 Speaker device
FR3067206A1 (en) * 2017-05-30 2018-12-07 Devialet ASSEMBLY COMPRISING A MOTOR VEHICLE ROOF STRUCTURE AND A SOUND RESTITUTION SYSTEM
WO2019086357A1 (en) * 2017-11-01 2019-05-09 Mayht Bv Low profile loudspeaker device
WO2020129262A1 (en) * 2018-12-22 2020-06-25 フォスター電機株式会社 Vehicle-mounted speaker device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06217385A (en) * 1993-01-14 1994-08-05 Sony Corp Bass reflex type speaker box
WO2011046030A1 (en) * 2009-10-15 2011-04-21 パイオニア株式会社 Speaker device
WO2011077560A1 (en) * 2009-12-25 2011-06-30 パイオニア株式会社 Speaker vibrator and speaker device
JP2012156979A (en) * 2011-01-06 2012-08-16 Zoruzo:Kk Speaker unit and speaker system using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06217385A (en) * 1993-01-14 1994-08-05 Sony Corp Bass reflex type speaker box
WO2011046030A1 (en) * 2009-10-15 2011-04-21 パイオニア株式会社 Speaker device
WO2011077560A1 (en) * 2009-12-25 2011-06-30 パイオニア株式会社 Speaker vibrator and speaker device
JP2012156979A (en) * 2011-01-06 2012-08-16 Zoruzo:Kk Speaker unit and speaker system using the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017104118A1 (en) * 2015-12-17 2017-06-22 パナソニックＩｐマネジメント株式会社 Speaker device
JPWO2017104118A1 (en) * 2015-12-17 2018-10-04 パナソニックＩｐマネジメント株式会社 Speaker device
FR3067206A1 (en) * 2017-05-30 2018-12-07 Devialet ASSEMBLY COMPRISING A MOTOR VEHICLE ROOF STRUCTURE AND A SOUND RESTITUTION SYSTEM
WO2019086357A1 (en) * 2017-11-01 2019-05-09 Mayht Bv Low profile loudspeaker device
KR20200083991A (en) * 2017-11-01 2020-07-09 메이츠 홀딩 비.브이. Low-profile loudspeaker device
JP2021501506A (en) * 2017-11-01 2021-01-14 メイト ホールディング ビー．ブイ． Low size loudspeaker device
US11297415B2 (en) 2017-11-01 2022-04-05 Mayht Holding B.V. Low profile loudspeaker device
JP7280625B2 (en) 2017-11-01 2023-05-24 メイト ホールディング ビー．ブイ． Low-dimension loudspeaker device
KR102547719B1 (en) * 2017-11-01 2023-06-26 메이츠 홀딩 비.브이. Low Profile Loudspeaker Unit
EP4236368A3 (en) * 2017-11-01 2023-09-13 Mayht Holding B.V. Low profile loudspeaker device
EP4243446A3 (en) * 2017-11-01 2023-11-29 Sonos Mighty Holdings B.V. Low profile loudspeaker device
WO2020129262A1 (en) * 2018-12-22 2020-06-25 フォスター電機株式会社 Vehicle-mounted speaker device

Similar Documents

Publication Publication Date Title
CN109946864B (en) Display device
JP3188023U (en) Dual dynamic type coaxial earphone
US20120114148A1 (en) Loudspeaker driver and loudspeaker arrangement
WO2018070399A1 (en) Flat speaker and display device
JP2005159409A (en) Diaphragm for speaker and speaker using the same
JP6924962B2 (en) Speaker device
JPWO2005015947A1 (en) Diffuser and speaker using the same
WO2014091598A1 (en) Speaker device
CN106664491B (en) Exciter
WO2010050056A1 (en) Speaker connecting member, and speaker
JP2023108592A (en) coaxial speaker
WO2015096526A1 (en) Suspended elastic diaphragm
US8155372B2 (en) Wire suspension for speakers
JP6052669B2 (en) Speaker and electronic device using the speaker
JP5021026B2 (en) Speaker device
KR20110002043U (en) Speaker unified holder
WO2013118384A1 (en) Speaker device
US7515724B2 (en) Loudspeaker driver
JP2000050384A (en) Speaker device
KR101087493B1 (en) A Hidden Magnetostrictive Speaker Embedded in Flat Panel Display
TWI825644B (en) Speaker unit
JP5885776B2 (en) Wiring configuration and wiring unit for wiring the litz wire of the driving unit
JPH11308691A (en) Loud speaker system
JP2006270998A (en) Diffuser and loudspeaker using the same
WO2024034250A1 (en) Display device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12890065

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12890065

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP