JP2001008284

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DESCRIPTION JP2001008284
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
spherical and cylindrical speaker device, and more specifically, it has a shape obtained by
dividing a sphere into 1/8 divisions in various halls, concert halls, gathering halls, etc. A speaker
cabinet having a plurality of driver units on the surface is connected via a square pipe to form an
integral spherical speaker device, and a spherical shape and a desired acoustic effect can be
obtained by adjusting the directional characteristics of sound especially as needed. The present
invention relates to a cylindrical speaker device.
[0002]
2. Description of the Related Art A sound wave generated from one point propagates in the air as
a spherical wave and attenuates in inverse proportion to the square of the distance. It requires a
sound source with high sound pressure and uniform wide directivity characteristics to transmit
sound over a wide range, and the sound source is appropriate to reduce the influence from the
audience and structures to increase the intelligibility of the sound. It needs to be installed in a
position.
[0003]
[0003] A single driver unit can not provide the required sound pressure and directivity.
Therefore, in order to obtain high sound pressure and a wide service area (directivity), a large
number of uniform characteristics can be obtained. It is known that spherical waves can be easily
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obtained by arranging a driver unit on a spherical surface, and 360-degree omnidirectional
spherical speaker cabinets and the like have been commercialized.
[0004]
In a concert hall or a meeting place, the service area (directivity) of the speaker apparatus is
directed only to the audience or the audience in order to avoid adverse effects such as howling
and the loss of intelligibility due to reverberation. And placed so that no sound is emitted in
unnecessary directions.
[0005]
SUMMARY OF THE INVENTION A spherical nondirectional speaker having acoustic
characteristics excellent in sound field localization, spatial reproducibility and the like has
difficulty in directivity control, transportation, installation, handling and the like. The
[0006]
SUMMARY OF THE INVENTION (1) The present invention has a shape obtained by dividing a
sphere into 1/8 divisions, arranges a required number of driver units on the surface, and places
the driver unit in the center of the sphere. A vertical plate having a predetermined width in the
longitudinal and longitudinal direction to be positioned, and a hanger plate having projections at
upper and lower ends on the vertical plate and integrally provided in the longitudinal direction of
the vertical plate, and an arc of 90 degrees A driver unit having a drive electrode terminal at a
required position on a horizontal surface, and a square pipe formed with a notch into which the
upper and lower projections of the hanger plate are fitted, the upper and lower notches of the
hanger plate A spherical speaker device in which the upper and lower projections of each 1 / 8divided spherical speaker unit are fitted to form a spherical body.
[0007]
(2) A service area (directivity of sound only in a required direction) without providing each of the
1/8 divided spherical speaker units provided in the square pipe on the required surface of the
square pipe portion as required Is a spherical speaker device characterized by having.
[0008]
(3) A spherical speaker apparatus in which the height of the square pipe can be adjusted by
providing the 1/8 divided spherical speaker units as required.
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[0009]
(4) The cylinder is divided into quarters, and a required number of driver units are disposed on
the surface, and a vertical plate of a required width is formed in the longitudinal / longitudinal
direction located at the central portion of the sphere. A speaker having a projection on the upper
and lower ends of the vertical plate, a hanger plate integrally provided in the longitudinal
direction of the vertical plate, and a driving electrode terminal at a required position of a 90 °
circular arc horizontal surface · A cylindrical speaker cabinet in which a unit and four speaker
units each having a driving electrode terminal at a required location are connected, and a
required number of connecting cylindrical cylinders and speakers in the upper and lower sides of
the cylindrical speaker cabinet The unit and the upper and lower ends of the connected semicylindrical speaker unit have a shape obtained by dividing the connected sphere into 1/8, and a
required number of driver units are arranged on the surface, and located at the center of the
sphere Vertical Hand direction to form a flat plate of predetermined width, a cylindrical speaker
device comprising a hemispherical speaker cabinet having a drive electrode terminals flat
faceplate required location.
[0010]
(5) In the case of installation at a corner portion of a required room, it is arranged using a
bracket.
[0011]
(6) A speaker cabinet having a shape obtained by dividing a sphere by 1/8 and having a required
number of driver units on its surface, and a required service area (directivity) in a square pipe or
a bracket The required number is arranged to be obtained.
[0012]
(7) Furthermore, also in the case of installation on the upper part of the wall surface, two speaker
cabinets are similarly arranged using a bracket so that a service area (directivity) of 180 degrees
can be obtained. Do.
[0013]
(8) Also in the case of installation on a ceiling surface, four speaker cabinets are attached to a
square pipe suspended from the ceiling so that a service area (directivity) of 360 degrees can be
obtained.
[0014]
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BEST MODE FOR CARRYING OUT THE INVENTION A speaker having a 1/8 spherical shape or a
1/4 divided cylindrical shape and having a plurality of driver units on its surface in various halls,
concert halls, gathering halls, etc. · A cabinet is connected via a square pipe to form an integral
spherical speaker device, and if necessary, the number of speaker cabinets provided on the
square pipe can be adjusted to adjust the directional characteristics of sound, and a desired
acoustic effect Spherical and cylindrical speakers.
[0015]
Embodiments of the invention according to the claims in the patent application will be described
with reference to the accompanying drawings.
In FIGS. 1 to 4, the speaker unit 12 constituting the spherical speaker device 10 according to
claim 1 is made of glass fiber reinforced plastic and has a shape obtained by dividing a sphere
into 1/8, and a required number of surfaces 14 are required. A driver unit 30, 30... Is disposed,
and a vertical plate 16 of a required width is formed in the longitudinal longitudinal direction
located at the central portion of the spherical speaker unit 12, and the upper and lower ends in
the longitudinal direction of the vertical plate 16. A hanger plate 20 having projections 20a, 20a
is integrally provided, and a driving electrode terminal 18a is provided at a required position of a
90-degree arc horizontal plane 18.
[0016]
The speaker unit 12 has a shape obtained by dividing four spheres into 1/8 divisions in the cuts
32a, 32a,... Of the square pipe 32 having the cuts 32a, 32a,. The upper and lower projections
20a, 20a of the respective hanger plates 20, 20 are fitted into a spherical speaker device 10
around the square pipe 32.
[0017]
In the second aspect of the present invention, as shown in FIG. 2, it is not necessary to propagate
sound behind the spherical speaker device 10 as required, ie, at a concert hall, a meeting hall, etc.
When it is sufficient to direct the sound only to the front of the speaker device 10, or when the
spherical speaker device 10 is disposed near a corner or a wall of a room, the notches 32a, 32a,.
The upper and lower projections 20a, 20a of the hanger plate 20 of the 1/8 divided spherical
speaker units 12, 12 are not fitted to form a hemispherical speaker device 10 so that sound is
emitted only forward.
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[0018]
In FIG. 5, in the case where the spherical speaker device 10 is provided at the corner portion of
the room, the bracket 11 having the notches 11a, 11a ·· is fixed to the wall surface through bolts
(not shown). The upper and lower projections 20a, 20a,... Of the hanger plate 20 of the spherical
speaker device 10 are fitted in the notches 10a, 10a,.
[0019]
FIG. 6 shows an embodiment in which two of the respective 1 / 8-divided spherical speaker units
12, 12 are connected, and the bracket 11 is fixed to the wall surface by bolts as in the case of
FIG. The upper and lower projections 20a, 20a,... Of the hanger plate 20 of the spherical speaker
device 10 are fitted and fixed in the notches 10a, 10a,.
[0020]
In FIG. 7, four 1 / 8-divided spherical speaker units 12, 12... Are connected to form a lower half
hemispherical shape, and the hemispherical speaker is provided at the upper end of the square
pipe 32. This embodiment is an apparatus 10.
[0021]
In FIGS. 1 and 2, in claim 3, the height of the square pipe 32 provided with the 1/8 divided
spherical speaker units 12, 12... Make it adjustable and broaden the directivity of the sound.
[0022]
In FIGS. 8 and 9, a cylindrical speaker device 40 according to claim 4 has a shape obtained by
dividing a cylinder into quarters, and a predetermined number of driver units 30, 30. A vertical
plate 46 of a required width is formed in the longitudinal direction located at the center of the
sphere, and the vertical plate 46 is formed, and projections 20a, 20a are formed at the upper and
lower ends in the longitudinal direction of the vertical plate 46. The hanger plate 20 is integrally
provided, and the driving electrode terminal 18a is provided at a required place of the 90 °
circular arc horizontal surface 48.
[0023]
The four cylindrical speaker units 40, 40... Having a shape obtained by dividing the cylinder into
quarters are divided into the cuts 32a, 32a. The upper and lower projections 20a, 20a of the
hanger plate 20 of the spherical speaker unit 12, 12 are fitted to form a disk-shaped speaker
cabinet B, and a predetermined number of upper and lower pipes 32 are connected to each
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other. A required number of speaker units 12, 12 are disposed on the surface shown in FIG. 9 at
the upper and lower ends of the speaker cabinet B, and hemispherical speaker cabinets A and A
are connected to form an integral cylindrical speaker cabinet. .
[0024]
In any of the embodiments, the driving electrode terminals 18a of the adjacent speaker units 12
and 40 are connected.
[0025]
According to the spherical and cylindrical speaker devices 10 and 40 according to the present
invention, eight of each of the 1/8 divisions in the cut 32a, 32a ··· of the square pipe 32 The
upper and lower projections 20a, 20a of the respective hanger plates 20, 20 of the spherical
speaker units 12, 12 are fitted into the spherical speaker device 10 and the cylindrical speaker
device 40.
[0026]
(1) According to the spherical speaker device 10 relating to the present invention, the 1 / 8divided spherical shape provided on the square pipe 32 according to the shapes of various holes,
concert halls, gathering halls, etc. As the number and direction of the speaker units 12, 12... Can
be selected, the service area (directivity) of sound becomes adjustable, and a desired acoustic
effect can be obtained.
[0027]
(2) It is not necessary to radiate the sound behind the spherical speaker device 10, especially at
the concert hall, the gathering place, etc., as needed, but only at the front of the spherical speaker
device 10. When the spherical speaker device 10 is placed near a corner or wall of a room, the 1
/ 8-divided spherical speaker units 12 may be provided behind the required surface of the square
pipe 32, If 12 is not provided, a configuration for obtaining directivity only in front of the sound
can be obtained very easily, and addition and removal become easy.
[0028]
(3) By simply attaching and detaching the spherical speaker units 12, 12, it is possible to
optionally select a sound service area (directivity).
[0029]
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(4) A mirror effect can be obtained by arranging the spherical speaker device 10 near a corner or
wall of a room.
[0030]
(5) A desired spherical wave can be obtained, and a natural natural sound field can be easily
obtained.
[0031]
Brief description of the drawings
[0032]
1 is a perspective view of a spherical speaker device according to claim 1 according to the
present invention.
[0033]
FIG. 2 is a perspective view of the spherical speaker device of FIG. 1 as a hemispherical speaker
device without providing a 1/8 split spherical speaker unit at the rear.
[0034]
3 is an enlarged partial exploded perspective view showing a state in which the 1/8 divided
spherical speaker unit is removed from the square pipe of the spherical speaker device of FIG.
[0035]
5 is an enlarged perspective view of a hanger plate fixed to a vertical plate of a desired width
formed in the rear longitudinal direction of the 1/8 split spherical speaker unit of FIG. 3;
[0036]
FIG. 51 is a perspective view showing a state in which 1/8 split spherical speaker units are
provided at a corner of a room and a bracket.
[0037]
FIG. 62 is a perspective view showing a state in which the 1 / 8-divided spherical speaker units
shown in FIG.
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[0038]
8 is a perspective view of a cylindrical speaker device according to claim 4 according to the
present invention.
[0039]
9 is a perspective view from the cylindrical speaker device of FIG.
[0040]
Explanation of sign
[0041]
10: spherical speaker device; 12: 1/8 divided spherical speaker unit; 14: surface; 16: vertical
plate; 18: arc horizontal plane; 18a: driving electrode terminal; Reference Signs List 20: hanger
plate 20a: projection 30: driver unit 32: square pipe 32a: notching 40: cylindrical speaker device
44: surface 46: vertical plate; 48: arc horizontal surface; A: hemispherical speaker cabinet; B: disk
speaker cabinet.
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