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JP2000152364

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DESCRIPTION JP2000152364
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker device for listening to music, which is mainly used in a room such as a home.
[0002]
2. Description of the Related Art A generally known speaker device of this type is as shown in
FIG. The speaker device 51 is, for example, a three-way type, and includes an enclosure (cabinet)
52, a bass woofer 54, a mid-sound scoker 55, and a treble tweeter attached to the front wall
(baffle plate) of the enclosure, respectively. A speaker unit 53 consisting of 56 and a network
(not shown) for connecting the speaker unit and an input terminal for amplifier connection (not
shown) provided on the rear wall of the enclosure are provided.
[0003]
By the way, two speaker devices 51 as described above are usually juxtaposed in the room with a
predetermined interval so that the speaker units 53 face the listener side, and the listener is
positioned in front of the interval of the speaker devices To be used. However, since the above
speaker unit 53 is of the front emission type, a certain degree of sound spread can be expected,
but the rise of the sound is bad. Then, in order to eliminate the badness of the rise of this sound,
a high-class product using a compression driver attached with a horn for high-pitched sound is
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also proposed. As described above, the conventional speaker device 51 has a drawback that the
sense of sound spread and the rise of the sound are not compatible. In addition, since all of the
sound output from the speaker unit 53 is directly directed to the listener at the front, the listener
can only be regarded as an unnatural sound, and the sound field is vertical as shown by the
dashed line in FIG. There is also a drawback in that it is a face of direction, has no threedimensional effect, and does not spread around the sound image.
[0004]
Therefore, the present invention solves the above-mentioned conventional problems and can
achieve both sound spreading and sound rising without using a special device. It is an object of
the present invention to provide a speaker device for music appreciation that can enjoy natural
and three-dimensional music in a realistic sensation equivalent to a concert hall by improving the
place and forming a correct balance with a sound image.
[0005]
SUMMARY OF THE INVENTION In order to achieve the above object, the invention of claim 1
comprises an enclosure, a speaker unit, and a network for connecting the speaker unit and an
input terminal for amplifier connection provided in the enclosure. The speaker unit is composed
of a woofer for bass, a compression driver for medium tone, and a horn tweeter for high tone,
and the woofer and the compression driver are mounted upward on the top wall of the enclosure,
A horn tweeter is mounted laterally on the top wall of the enclosure, and a compression driver is
characterized by removing the horn.
[0006]
In the invention of claim 2, according to claim 1, the compression driver interposes a cork plate
between the outer peripheral surface and the mounting hole in the mounting hole drilled in the
upper wall of the enclosure, and adjusts the height of the lower surface. It is characterized in that
it is mounted and mounted on a table.
The invention according to claim 3 is characterized in that, in claim 1 or 2, the horn tweeter is a
top wall of an enclosure between the woofer and the compression driver at a position rearward
of a line connecting the center of the woofer and the center of the compression driver. And are
mounted substantially parallel to each other.
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2
[0007]
According to the invention of claim 4, in claim 3, the mounting angle of the horn tweeter faces
the listener, which is positioned in front of the two speaker devices when they are juxtaposed at a
predetermined interval. It is characterized in that it is an angle.
According to a fifth aspect of the present invention, in the first to fourth aspects, the acoustic
reflector including the lower piece and the upper piece bent at a predetermined angle by forming
an obtuse angle with the lower piece is a woofer on the bending side of the upper piece; It is
characterized in that it is attached to the rear wall of the enclosure via its lower piece so as to
face the front with a compression driver and a horn tweeter. According to a sixth aspect of the
present invention, in the fifth aspect, the woofer, the compression driver and the horn tweeter on
the enclosure are covered between the upper end of the upper portion of the acoustic reflector
and the front end of the upper wall of the enclosure. It is characterized by the fact that the saran
net is stretched.
[0008]
An embodiment of the present invention will be described with reference to the drawings. FIG. 1
is a front view of a partial cutaway showing a speaker device, FIG. 2 is a side view of a partial
cutaway on the same, FIG. 3 is a plan view of a partial cut on the same, and FIG. 4 is an exploded
perspective view of the main part. In FIG. 1 to FIG. 4, reference numeral 11 denotes a speaker
device, which is composed of an enclosure 12, a speaker unit 13, and a network (not shown) for
connecting these speaker units and input terminals for amplifier connection provided in the
enclosure (not shown). It has a total height of approximately 130 cm. The speaker unit 13
comprises a woofer 15 for bass, a large compression driver 16 for medium tone, and a horn
tweeter 17 for high tone.
[0009]
The woofer 15 is mounted upward in the mounting hole 18 formed in the upper wall (baffle
plate) of the enclosure 12 with its upper end outer peripheral flange portion 20 engaged in a
mounting manner. The woofer 15 is housed almost entirely in the enclosure 12 in the mounted
state. At the time of mounting, a screw 22 is screwed into a screw hole 23 provided in the upper
wall of the enclosure 12 via a plurality of mounting holes 21 provided in the outer peripheral
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3
flange portion 20 and fixed. 25Is a hollow cylindrical port for letting out the sound in the
enclosure 12, and the upper end of the port is flush with the upper wall of the enclosure 12
around the woofer 15 and the lower end is an enclosure It extends a predetermined length into
12 and is open.
[0010]
The large compression driver 16 has a cork plate 28 interposed between the outer peripheral
surface and the mounting hole in the mounting hole 27 formed in the upper wall of the enclosure
12 and has a height such that the lower surface is fixed to the middle wall of the enclosure 12 It
is mounted on the adjustment base 30 and fixed upward. The compression driver 16 slightly
protrudes from the top wall of the enclosure 12 only at a part of its upper end in the mounted
state, but most of the other parts are accommodated in the enclosure 12. The compression driver
16 has the horn removed. The cork plate 28 is interposed to fix the compression driver 16 and to
obtain a soundproof effect. In addition, the line 32 connecting the center of the compression
driver 16 and the center of the woofer 15 is not parallel to the front end face of the enclosure 12
when viewed from the top, and slightly inclined so that the center of the compression driver 16
recedes from the center of the woofer 15 ing.
[0011]
The horn tweeter 17 is mounted on the upper wall of the enclosure 12 between the woofer 15
and the compression driver 16 at a position rearward of a line 32 connecting the center of the
woofer 15 and the center of the compression driver 16 substantially parallel to the line. That is,
the mounting plate 33 is substantially vertically erected and fixed via an L-shaped bracket (not
shown) at a position rearward of the line 32 connecting the centers, and the horn tweeter 17 is
fixed in the mounting hole 35 drilled in the mounting plate 33. It is fitted sideways with the head
facing forward. The mounting angle of the horn tweeter 17 mounted via the mounting plate 33
is, for example, an arbitrary angle in the range of 5 ° to 40 °, particularly preferably 30 °, and
as shown in FIG. This is an angle of the facing direction to the listener who is positioned in front
of the space 11 and 11 when juxtaposed with a predetermined space.
[0012]
37
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A sound reflecting plate is composed of a lower piece 38 and an upper piece 39 bent at a
predetermined angle with respect to the lower piece, and the bent side of the upper piece 38 is
the woofer 15, the compression driver 16 and the horn tweeter 17 It is attached to the rear wall
of the enclosure 12 with a screw 40 via its lower piece 38 in such a way as to face the front. The
angle formed by the lower piece 38 and the upper piece 39 is any angle in the range of 130 ° to
160 °, particularly preferably 150 °. 41Is a saran net, which covers the woofer 15 on the
enclosure 12, the compression driver 16 and the horn tweeter 17 and extends between the
upper end of the top piece 38 of the reflector 37 and the front end of the upper wall of the
enclosure 12 and on both sides thereof. Be Since it is difficult to maintain the form of the
surfaces on both sides only by the saran net 41, a mounting rod 42 consisting of a hollow pipe or
stay of small diameter is directed from the upper end on both sides of the upper piece 38 of the
reflector 37 toward the front end on both sides of the enclosure 12 It is installed obliquely, and
the saran net 41 is bent and stretched along the mounting rod 42. 43Is a rotary screw type
height adjustable leg which allows the height of the enclosure 12 to be adjusted.
[0013]
As described above, since the woofer 15 and the compression driver 16 face upward and the
horn tweeter is facing sideways, and the compression driver 16 removes the horn, a sense of
spread can be obtained due to the non-directivity of the sound and the rise of the sound Will also
be good. Also, a horn tweeter 17 is attached on the upper wall of the enclosure 12 between the
woofer 15 and the compression driver 16 at a position rearward of a line 32 connecting the
center of the woofer 15 and the center of the compression driver 16 substantially parallel to the
line As it turns to the listener, the realism of the sound increases. Also, since the acoustic
reflection plate 37 is mounted facing the front with the speaker unit 13 such as the woofer 15,
this also gives a sense of sound spreading, and the sound can reach the listener directly and the
sound has a sense of spreading Balance can be achieved.
[0014]
In actual use, for example, as shown in FIG. 5, two speaker devices 11, 11 are juxtaposed at
predetermined intervals along the wall of the room. Such juxtaposition is similar to that of the
prior art. Then, the listener sits on a chair in front of the juxtaposed space between the speaker
device 11 and the speaker device 11, and at this time, the horn twister 17 of the speaker devices
11, 11 whose angle is set as described above is It will turn to face the listener. Therefore, when
using the speaker devices 11 and 11 by connecting an amplifier etc., all of the sound disperses in
a well-balanced manner without directly going to the listener located on the front, so that it can
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5
be regarded as a natural sound for the listener As shown by a chain line in FIG. 5, the sound field
is a side surface, so that a three-dimensional effect is obtained, the entanglement with the sound
image is also spread, and the balance is also correct.
[0015]
The above-described embodiment is merely a preferable example, and it is a matter of course
that the present invention is not limited to this and embodiments other than the embodiment
shown in the drawings may be included in the invention. Further, a part of the configuration in
the embodiment can be replaced with another configuration within the equivalent range.
[0016]
According to the speaker device of the present invention, as described above, the woofer and the
compression driver face upward, and the horn tweeter is sideways, and the compression driver
removes the horn, so that the sound spreads As well as coming out, the rising of the sound also
becomes good. Moreover, since all of the sound is scattered in a balanced manner without going
directly to the listener in front of it, it can be regarded as a natural sound for the listener, and the
balance between the sound field and the sound image is also correct. Therefore, it becomes
possible to simultaneously achieve a sense of expansion of the sound and a rise of the sound, and
enjoy natural and three-dimensional music that can not be obtained by the speaker alone without
using a special device such as an amplifier or processor. There is an excellent effect of becoming
possible.
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