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JP2003023686

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2003023686
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
mounting apparatus for a reflector attached to a speaker apparatus such as a speaker cabinet
and a mounting method thereof, and in particular, to a speaker apparatus provided with an
opening of a speaker facing obliquely backward. The present invention relates to an attachment
device of a reflection plate and an attachment method thereof.
[0002]
2. Description of the Related Art As shown in FIG. 7, the left and right speakers 2L and 2R built in
the left and right speaker cabinets 1L and 1R are located in front of the listener 3 as shown in
FIG. The left and right openings 4L and 4R which are disposed on the side and pierced on the
baffle board side of the left and right speaker cabinets 1L and 1R are disposed to face the listener
3.
[0003]
Therefore, following the L sound entering left ear 5L of listener 3 from left speaker 2L, when the
L 'sound which is the same sound is slightly delayed and enters right ear 5R, it is similarly
emitted from right speaker 2R. The R sound enters the right ear 5R close to the right speaker 2R,
and subsequently the left ear 5L has a predetermined delay and the R 'sound arrives.
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Thus, the listener 3 equipped with a pathway for fusing the binaural hearing senses the
localization point 6 of the sound sources L and R in front. Therefore, the localization of the sound
source is relatively excellent.
[0004]
As described above, since the openings 4L and 4R of the left and right speakers 2L and 2R of the
left and right speaker cabinets 1L and 1R directly face the listener 3, the listener 3 has a sound
pressure. Because the localization point 6 of the sound image is localized in front of an
intermediate position between the left and right speaker cabinets 1L and 1R and the listener 3,
there is a problem that it is difficult to feel a sense of expansion.
[0005]
In order to solve the above-mentioned problems, the left and right speakers 2L, 2R built in the
left and right speaker cabinets 1L, 1R are disposed obliquely toward the rear, and a reflecting
plate is fixedly disposed behind the left and right speaker cabinets. The speaker device was
devised to reflect the middle and high-pitched sound toward the front, but various problems
occurred as shown in the following sections.
(A) The speaker device can not be miniaturized due to the addition of the reflection plate. (B) It is
not easy to change the sound spreading characteristics of the reflector. (C) Sound leaks from the
back plate of the left and right speaker cabinets. (D) The packaging container of the speaker
device is enlarged.
[0006]
The present invention has been made to solve the problem of overhead, and the problems to be
solved by the invention can be reduced in size, and the directivity of the sound can be easily
controlled by the shape setting of the reflector. It is an object of the present invention to provide
a mounting apparatus for a reflector without sound leakage from the back and a mounting
method for the reflector.
[0007]
SUMMARY OF THE INVENTION The present invention according to claim 1 is directed to a back
plate 7L, 7R of a speaker device 10L, 10R having openings 4L, 4R of the speakers 2L, 2R at least
toward the back side. Reflectors 8L and 8R are pivotably attached to the side so as to be
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detachable.
[0008]
According to the second aspect of the present invention, the elastic members which can be
detachably attached to the mounting portions 9L and 9R provided on the back plates 7L and 7R
of the speaker devices 10L and 10R and the mounting portions 11L and 11R of the reflection
plates 8L and 8R. The reflectors 8L and 8R are pivotally connected to each other via the joint
members 12L and 12R.
[0009]
According to the third aspect of the present invention, the sound leakage preventing flange
portion 13 is provided on the mounting portions 11L and 11R of the reflection plates 8L and 8R
of the joint members 12L and 12R. It is used as a mounting device for a reflection plate.
[0010]
According to a fourth aspect of the present invention, the reflectors 8L and 8R are formed in a
flat plate or a curved plate shape, and the reflection according to any one of the first to third
aspects is achieved. It is used as a mounting device for a plate.
[0011]
The present invention according to claim 5 is characterized in that the light emitting element 14
is brought into contact with the reflectors 8L and 8R so that light is emitted from at least the
periphery of the reflectors 8L and 8R. It is set as the attachment apparatus of the reflecting plate
of 1 to 4 statement.
[0012]
According to the sixth aspect of the present invention, the reflectors 8L, 10L, 10R having the
openings 4L, 4R of the speakers 2L, 2R at least toward the rear side are detachably attachable to
the back plates 7L, 7R. This is a method of attaching a reflector, characterized in that 8R is
pivotally attached.
[0013]
According to the seventh aspect of the present invention, the reflectors 8L and 8R are formed in
a curved plate shape, and the speaker devices 10L and 10R are used to pivotally attach the
curved reflectors 8L and 8R to the back plates 7L and 7R. According to a sixth aspect of the
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present invention, there is provided a method of attaching a reflection plate according to the
sixth aspect, wherein the spreading effect is controlled by pivoting in a concave or convex shape
as viewed from the front side of the lens.
[0014]
According to the mounting apparatus and the mounting method of the reflecting plate of the
present invention, the speaker apparatus can be miniaturized, and the directivity of the sound
can be easily controlled by the shape setting of the reflecting plate, and the sound leakage from
the back surface Thus, it is possible to provide an apparatus and method for attaching a
reflection plate without reflection plate.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION An apparatus for attaching a reflection plate
to a speaker cabinet, which is an embodiment of the present invention, will be described below
with reference to FIGS.
[0016]
FIG. 1 is a perspective view showing an embodiment of a speaker system to which a mounting
apparatus for attaching a reflector to a cabinet according to the present invention is applied.
[0017]
In FIG. 1, a speaker system 10L, 10R comprising left and right speaker cabinets 1L, 1R and left
and right reflectors 8L, 8R is used as a speaker system of a personal computer (hereinafter
referred to as a CPU). The left and right speaker devices 10L and 10R disposed on the left and
right sides of the CPU 14 have the sound signals captured by the CPU 14 directed obliquely to
the rear of the left and right speaker cabinets 1L and 1R, and an opening in which the left and
right speakers 2L and 2R are built. Sound is emitted from the left and right reflectors 4L and 4R
in the direction of the left and right reflectors 8L and 8R, and emitted in the forward direction of
the speaker devices 10L and 10R in which the listener 3 is present via the left and right
reflectors 8L and 8R.
[0018]
The CPU 14 is provided with a display unit 15 such as an LCD (Liquid Crystal Display) for
receiving and displaying a video signal as usual, and an operation unit 16 such as a keyboard and
a mouse.
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[0019]
In the speaker devices 10L and 10R of this embodiment, the LED 17 for displaying the operator
status on the front plate side of the left speaker cabinet 1L constituting the left speaker device
10L, the power "on" and "off" switch 18, volume, base, input The variable resistors (VR) 19, 20,
21 for switching, the jack for horn 22 and so on are sequentially arranged, and various kinds of
knobs are arranged at a position where the listener can easily adjust when listening to an audio
signal or an acoustic signal. ing.
[0020]
FIGS. 2A and 2B show side and rear views of the left and right speaker devices 2L and 2R.
[0021]
The specific configuration of the left and right speaker devices 10L and 10R according to the
present invention will be described with reference to FIG.
First, the left and right speaker cabinets 1L and 1R are substantially U-shaped in cross section
and are formed of a synthetic resin or the like in a substantially box shape by the left and right
side plates 23, 24, the front plate 25, the bottom plate 26 and the top plate 27 The top plate 27
has a substantially rectangular shape of 25 mm × 145 mm, the base plate 26 has a substantially
trapezoidal shape with a base of 35 mm, an upper side 25 mm, and a height of about 10 mm.
The other two sides have a substantially triangular shape of about 65 mm, and the left and right
side plates 23, 24 are formed to have a depth distance of about 65 mm with a predetermined
curvature from the front to the rear, and the height direction is shown in FIG. As shown in), the
upper end edges of the left and right side plates 23, 24 are inclined downward toward the back
at a predetermined angle .beta. The end of the back plate 7L (7R) It has been made with the 45
° angle between the vertically erected perpendicular to.
[0022]
On the other hand, the back plates 7L and 7R are formed in a substantially rectangular shape of
about 95 mm × 55 mm, and two mounting portions 9L (9R) for pivoting the left and right
reflection plates 8L and 8R above the back plates 7L and 7R. Is integrally formed with the back
plates 7L and 7R.
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[0023]
Reference numeral 30 denotes a vent for constituting a phase inversion baffle, and 31 denotes an
input terminal for an acoustic signal from the CPU 14 or the like. The vent 30 and the input
terminal 31 are also made of synthetic resin integrally with the back plates 7L and 7R. It is done.
[0024]
The two mounting portions 9L (9R) integrally formed on the back plates 7L and 7R have a
substantially elliptical cylindrical boss projecting as shown in FIG. 2 (B), FIG. 3 and FIG. Elliptical
holes 35 (see FIG. 4) are also formed in the back plates 7L and 7R of the cylindrical end.
[0025]
As is apparent from FIGS. 2A and 2B and FIG. 3, the baffle plate 29 has a substantially
trapezoidal shape as viewed from the front, and the trapezoidal inclined portion has a curvature
having an outward bulge, The base of the trapezoid is 55 mm identical to the short sides of the
back plates 7L and 7R, the upper side of the trapezoid is 35 mm similar to the bottom of the top
plate 27 and the height is about 65 mm, and integrally synthesized with the back plates 7L and
7R It is molded in resin, and its cross section is bent into a substantially U-shape, and as shown in
Fig. 2 (A), it is inclined in the direction inclined 45 ° to the perpendicular perpendicular to the
base 32 placed on a horizontal surface such as a desk. It is made to do it.
[0026]
Through holes 33 for the left and right speakers 2L and 2R are bored in the baffle plate 29
substantially at the center of the trapezoidal portion, and a dome-like guard 34 is integrated with
the baffle plate 29 so as to cover the through holes 33. The left and right speakers 2L (2R) are
fixed to the inside of the baffle plate 29 so as to face the through holes 33.
The baffle plate 29 and the back plates 7L and 7R having such a substantially U-shaped cross
section are fixed to the substantially box-shaped housing composed of the left and right side
plates 23 and 24, the bottom plate 26 and the top plate 27 via screws. .
Further, the base 32 is also fixed to the bottom plate 26 of the casing to constitute the left and
right speaker cabinets 1L and 1R.
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[0027]
Of course, in the left speaker cabinet 1L, there are provided a preamplifier, a drive and a control
circuit for driving and controlling the LED 17, the various variable resistors (VR) 19, 20 and 21
and the horn jack 22 and the like.
[0028]
Further, as shown in FIG. 1, the right speaker cabinet 2R does not have various operation knobs
or LEDs on the front plate 25.
[0029]
The mounting method of the left and right speaker cabinets 1L and 1R and the reflecting plates
8L and 8R will be described with reference to FIGS.
[0030]
In FIG. 3, a reflecting plate 8L (8R) is embossed on a rectangular transparent synthetic resin
having a thickness of 2 mm and a size of about 95 mm × 70 mm, and is formed into a convex
shape so as to have a flat surface or a predetermined curvature. Do.
Further, below the reflection plates 8L and 8R, attachment portions 11L and 11R of the
reflection plates 8L and 8R having the same dimensions as the two attachment portions 9L and
9R of the back plates 7L and 7R are formed.
The attachment portions 11L and 11R may be elliptical through holes 37 formed on the lower
side of the reflection plates 8L and 8R.
In FIG. 3, reference numeral 36 denotes a non-embossed, small circle in this example, but these
patterns can be selected as appropriate, and this portion is a transparent portion.
[0031]
Next, as shown in FIGS. 1 and 2A, bonding members 12L and 12R for bonding the reflectors 8L
and 8R to the mounting portion 9L (9R) of the speaker cabinet 1L (1R) and the bonding method
thereof are described. explain.
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[0032]
The joint members 12L and 12R are formed of an elastic or buffer synthetic rubber, a natural
rubber or the like as shown in FIG.
That is, the front surface is formed as a substantially oval retaining portion 38, and also serves as
a buffer portion when the reflecting plate 8L (8R) falls from the mounting portion 9L (9R).
[0033]
In order to fit into the elliptical through-hole 37 formed in the reflecting plate 8L (8R) following
the retaining portion 38, the reflecting plate 8L, 8R has a thickness t (for example, t = 2 mm).
Elliptical flange portion 13 for sandwiching the reflection plate 8L, 8R between the formed fitting
portion 39 and the fitting portion 39, and the back plate of the speaker cabinet 1L, 1R 7L, 7R is
an elliptical shape that is pressure-inserted into the oval cylinder of the attachment portion 9L,
9R and tapered toward the tip direction, and the sound leakage from the elliptical hole 35 made
in the back plate 7L (7R) The press-fit portion 40 to be prevented with 13 and the neck 41
having a cross-sectional elliptical shape to be fitted into the elliptical hole 35 bored in the back
plates 7L and 7R and the elliptical hole 35 bored in the back plates 7L and 7R The hooking
portion 42 is integrally formed to give elasticity The sliding groove 43 is formed in the direction
from the hooking portion 42 to the fitting portion 39.
[0034]
Such a joining member 12L, 12R is such that the curvature of the reflecting plates 8L, 8R is
directed inward as viewed from the front plate 25 side of the left and right speaker devices 10L,
10R as shown in FIG. ), Insert the two joint members 12L and 12R into the through holes 37 of
the reflectors 8L and 8R, and fit them into the fitting portions 39 to make the elliptical cylinders
of the attachment portions 9L and 9R of the speaker cabinets 1L and 1R. When the connecting
members 12L and 12R are inserted with pressure to the press-in portion 40 together with the
reflection plates 8L and 8R inside, the tip end portion 42 is press-fit into the elliptical holes 35 of
the back plates 7L and 7R while being bent, as shown in FIG. In the state of being inserted, the
tip end portion 42 opens vertically and is caught in the elliptical hole 35 and is not easily
removed even if the reflecting plates 8L and 8R are inserted and removed, and the falling off of
the reflecting plates 8L and 8R is prevented.
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In addition, sound leakage from the speaker cabinets 1L and 1R can be completely blocked by
the flange portion 13 and the press-fit portion 40, and an overload is applied to the reflection
plates 8L and 8R as when the speaker cabinets 1L and 1R are dropped. In this case, the reflectors
8L and 8R drop out of the speaker cabinets 1L and 1R, so that the reflectors 8L and 8R are
prevented from being broken.
[0035]
In the above-mentioned method of mounting the reflectors 8L and 8R, the reflectors 8L and 8R
are concave when viewed from the front plate 25 side of the speaker devices 10L and 10R, but
the reflectors 8L 'and 8R' shown on the right side of FIG. The joint member 30 is inserted into
the through holes 37 of the reflection plates 8L 'and 8R' in a direction (hereinafter referred to as
a convex shape) in which the curved surface faces outward as in the case, and pressure is applied
to the attachment portions 9L and 9R of the speaker cabinets 1L and 1R. You may make it insert.
[0036]
FIG. 6 schematically shows the spread of sound when the reflectors 8L and 8R are concave and
the reflectors 8L 'and 8R' are convex, as shown in FIGS. 6 (A) and 6 (B). In the case of a concave
or convex shape, the localization point 6 of the sound image is localized far from the listener 3 as
compared with a stereo system in which the openings 4L and 4R of the conventional speakers 1L
and 1R shown in FIG. An acoustic signal with a sense of depth can be obtained.
Also, when the directions of the concave reflectors 8L and 8R are changed to make them convex,
as shown in FIG. 6B, the sound image reflected by the reflectors 8L 'and 8R' is broadened as
compared with the concave reflectors 8L and 8R. It has the effect of being easy to do.
[0037]
The end of a light emitting element 44 such as an LED is shown in FIG. 5 through elliptical holes
35 of mounting portions 4L, 4R provided on the back plates 7L, 7R of the speaker cabinets 1L,
1R shown in FIG. , 8R are in contact with each other in the hole 47, and in this case, a part of the
bonding members 12L and 12R is removed, but in the bonding members 12L and 12R, the tip of
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the light emitting element 44 is used. It may be made to lead out from the penetration hole
pierced in the predetermined position of back plates 7L and 7R so that it may contact.
In this case, a bushing may be interposed in the back plates 7L and 7R so that no sound leaks
from the through holes.
Alternatively, the light emitting element 44 may be led out through the phase inversion pass hole
30.
[0038]
In this manner, the light emitting element 44 is brought into contact with the reflecting plates 8L,
8R, 8L ', 8R' and turned on to light the peripheral portions of the reflecting plates 8L, 8R, 8L ',
8R' in a predetermined color. Can be made to glow.
Moreover, patterns etc. other than the embossed part can be made to shine.
[0039]
According to the present invention, the miniaturization can be achieved, and the directivity of the
sound can be easily controlled by the shape setting of the reflector, and the mounting apparatus
and the reflector for the reflector without sound leakage from the rear surface The mounting
method of is obtained.
[0040]
Brief description of the drawings
[0041]
1 is a perspective view showing an embodiment of the speaker system of the present invention.
[0042]
2 is a side view and a rear view of the speaker device used in the present invention.
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[0043]
3 is a perspective view for explaining the mounting method of the mounting apparatus of the
reflective plate of the present invention.
[0044]
4 is a side sectional view of the bonding member showing one embodiment of the mounting state
of the reflection plate of the present invention.
[0045]
5 is a cross-sectional view of the joint portion showing another embodiment of the mounting
state of the reflection plate of the present invention.
[0046]
6 is a schematic view showing the change in the sound image due to the difference in the
mounting form of the reflection plate of the present invention.
[0047]
7 is a schematic diagram for explaining the localization of the sound image of the conventional
speaker system.
[0048]
Explanation of sign
[0049]
1L, 1R .. Left and right speaker cabinets, 2L, 2R .. Left and right speakers, 4L, 4R .. Openings, 7L,
7R .. Back plate, 8L, 8R, 8L ', 8R' .... Reflective plates, 9L, 9R ..... Mounting part of speaker cabinet,
11L, 11R .... Mounting part of reflecting plate, 12L, 12R .... Jointing member, 14. ... Computer
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