JP2003134588

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DESCRIPTION JP2003134588
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
omnidirectional speaker which is easy to install and remove, and easy to install and maintain.
[0002]
2. Description of the Related Art Conventionally, an omnidirectional speaker that can eliminate
the directivity in a specific direction and can obtain substantially homogeneous sound at any
position in the room where the speaker is placed is a coffee shop, a live band store, or a building.
It is used in various places such as plazas.
[0003]
As a general structure of an omnidirectional speaker, the directivity of sound in a specific
direction is eliminated by orienting the speaker upward or downward, and further installing a
cone-shaped reflector or the like in front of the speaker. ing.
[0004]
Also, even with omnidirectional speakers, a plurality of speakers are used to divide the frequency
band of sound into several parts, a two-way type using two speakers for high and low tones, or
for high and middle tones, There is a 3-way type using three speakers for bass.
[0005]
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A general three-way omnidirectional speaker is substantially the same arrangement as that of
FIG. 1 showing the speaker of the present invention, and from the top to the middle sound
speaker 1, the high sound speaker 2, and the bass speaker 3 Loudspeakers are placed on a
vertical line in an upward or downward direction, and if necessary, mid-tone cones 8 and hightone cones 9 as reflectors of sound are placed in front of each speaker to make the sound in all
directions around. I'm going to head.
[0006]
[Problems to be Solved by the Invention] This three-way speaker tends to have a high height
because three speakers are arranged side by side on a vertical line, and in the case of installation
in an installation place It is the mainstream to transport to the installation place and fix and
assemble each speaker etc. by screwing on the spot.
[0007]
However, it takes time and effort to screw the speakers in the field, and the medium sound
speaker 1 and the low frequency speaker 3 weigh about 12 kg, and in particular, since the
medium sound speaker is attached to the top, the work is difficult and time-consuming Problems
such as
[0008]
In addition, it may be necessary to remove each speaker unit at the time of breakdown or
maintenance of the speaker, but it takes time and effort to remove these screwed speaker units,
and there is also a problem of loss of screws after disassembly. It may occur.
[0009]
Furthermore, since these omnidirectional speakers are used in various places such as coffee
shops, live band stores, open spaces in buildings, etc., some people, not mania, are usually
targeted for purchase by ordinary people or corporations, Because people in general may not be
able to easily prepare tools, and there is no knowledge of assembly or disassembly, in the case of
purchase or breakdown, a sales branch will go directly to the installation site to carry out
assembly or repair etc. It may be necessary for assembly and business trip repair.
[0010]
Therefore, in the case where the sales destination is far from the store (other prefectures), there
is a drawback that the repair can not be performed immediately or the sales and repair costs
become high.
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[0011]
The present invention solves the above-mentioned problems in the omnidirectional speaker, and
can be easily assembled and disassembled without tools at the time of assembly or failure after
purchase, and omnidirectional such that traveling assembly and repair become unnecessary. The
task is to provide a speaker.
[0012]
[Means for Solving the Problems] In order to solve the problems as described above, the present
invention is an omnidirectional arrangement in which three speakers for high, middle and low
tones are arranged up or down and on a vertical line. In the speaker, the high-tone speaker is
fixed upward on an iron plate provided on a horizontal support plate, and the mid-tone speaker
has a screw fixing the mid-tone speaker horn downward to the horizontal support plate. The
downward extension is fixed by aligning the hole provided in the medium sound speaker with the
extension part projecting upward of the support plate, and the bass speaker is fitted to the
peripheral shape of the bass speaker provided on the support plate It is characterized in that it is
fitted in a step and fixed downward.
[0013]
According to the above configuration, the light high-pitched speaker is disposed upward on the
iron plate provided on the support plate to utilize the magnet present at the rear of the casing of
the high-pitched speaker by magnetic force on the iron plate It will be fixed.
[0014]
In addition, when a heavy medium sound speaker is installed downward on the support plate, the
holes that allow the screws fixing the medium sound speaker horn to match the protruding
portions protruding above the support plate By providing the speaker in the speaker, passing this
protrusion through the hole restricts the movement of the middle sound speaker back and forth
and left and right, and further, the movement in the up and down direction by the weight of the
middle sound speaker placed on the support plate Because it is also regulated, mid-tone speakers
will be fixed.
[0015]
Furthermore, the heavy-duty speaker for the low-frequency sound is embedded in the step
corresponding to the shape of the speaker for the low-frequency sound provided on the support
plate and has its own weight, so that the front, rear, left, right, up and down movement is
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restricted and fixed downward It will be
[0016]
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway front view of an
omnidirectional speaker according to the present invention, which is a speaker unit constituting
a 3-way type speaker, a high sound speaker 2 and a middle sound speaker 1 , Speaker 3 for the
bass.
[0017]
These speakers are arranged on a vertical line in the order of the speaker 1 for middle tone, the
speaker 2 for high tone, and the speaker 3 for low tone, and the unit support frame 4 and the
unit support frame for positioning and fixing these speakers Support frames 5, 6, 7 provided
horizontally in 4 are provided.
[0018]
In the inside of the support frame 4, the mid-tone horn 8 installed downward for diffusing the
sound of the mid-tone speaker 1 and the face-up directed to diffuse the sound from the mid-tone
speaker to the surroundings. A cone for the medium sound cone 9 which is a conical reflector,
and a high sound cone 10 which is a downward conical reflector for diverging the sound of the
high sound speaker 2 to the surroundings are provided, and the lower side of the support frame
4 is provided. A horn unit 11 is formed to diffuse the sound of the square pyramidal bass speaker
3.
[0019]
Next, the mounting structure of each speaker will be described.
First, the topmost middle tone speaker 1 is installed downward on the upper surface of the
support plate 5 to which the middle tone horn 8 is attached at the lower portion.
[0020]
FIG. 2 is a perspective view of the vicinity of the support plate 5 where the medium sound
speaker 1 is attached, and FIG. 3 is a partially cutaway front view showing the same portion after
attachment.
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[0021]
As shown in FIG. 3, the medium sound horn 8 passes four screws 14 from the lower side to the
horn support substrate 13 at the root of the horn at a position aligned with the through holes 12
formed in the support plate 5. It fixes by screwing with respect to the onion eye nut 15 driven in
from the upper surface of the support plate 5.
[0022]
The protruding portion of the screw 14 used for attaching the medium sound horn 8 and
protruding above the upper surface of the support plate 5 is formed in advance as an extension
protruding portion 14a by cutting a screw thread.
[0023]
Four holes 16 are made in the front surface (lower part in the figure) of the medium sound
speaker 1 so as to be aligned with the four extension protrusions 14 a.
[0024]
As shown in FIG. 2, when the four extension protrusions 14a protruding above the support plate
5 and the four holes 16 of the medium sound speaker 1 are aligned and combined, the medium
sound speaker 1 moves in the front, rear, left, and right Is restricted by the engagement of the
extension projection 14a and the hole 16, and since the movement in the vertical direction is
restricted by the weight of the medium sound speaker 1 installed on the upper surface of the
support plate 5, the medium sound speaker 1 will be fixed.
[0025]
In this way, since the medium sound speaker 1 to be installed on the top of the omnidirectional
speaker can be fixed simply by putting the extension protrusion 14a and the hole 16 on the
support plate 5, the omnidirectional speaker When installing it, no tools or screwing work is
required, and in the case of a failure, it can be easily removed simply by pulling out the medium
sound speaker 1 upward.
[0026]
In this embodiment, the number of screws is four, but the number of screws is not limited to
these and may be two or more (three or more if possible), and is not limited to the illustrated
screws. It can be used.
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[0027]
Next, as shown in FIG. 1, the high-tone speaker 2 uses a magnet provided at the rear (lower side
in the figure) of the high-tone speaker 2 on an iron plate 17 fitted in the center of the support
plate 6. It is fixed by magnetic force.
[0028]
Therefore, since the high-pitched speaker 2 can be fixed simply by placing it on the iron plate 17
of the support plate 6, no tool or screwing work is required when installing the omnidirectional
speaker, and also in the case of failure It can be easily removed simply by pulling up the sound
speaker 2 against the magnetic force.
[0029]
Next, as shown in FIG. 1, the bass speaker 3 is inserted into the portion of the step 19 provided
around the opening 18 formed in the support plate 7 in accordance with the diameter of the bass
speaker 3 and supported. It is done.
[0030]
Since the bass speaker 3 is fitted in the step corresponding to the shape of the periphery, the
movement in the front, rear, left and right is restricted, and the upper and lower movement is
restricted by the weight of the step 19 and fixed downward. It will be
[0031]
As described above, according to the omnidirectional speaker of the present invention, each
speaker can be fixed simply by placing it on the support plate, so that no tool or screwing work is
required for mounting the speaker at the time of installation Thus, it is possible for the general
person such as a coffee shop or a corporation who is a purchaser of the omnidirectional speaker
to easily assemble at the installation place.
[0032]
Also, even in the event of a failure or maintenance, it can be removed simply by pulling up or
pulling up each speaker from above the support plate, so that ordinary people can easily remove
it, especially when replacing the speakers. No work is required.
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[0033]
For dealers and the like, business trip assembly at the time of sales and business trip repair in the
case of a failure that requires only speaker replacement are no longer required, which results in
cost reduction after sales, and is cheap for users far from the dealer. I can sell it with my heart.
[0034]
Brief description of the drawings
[0035]
1 is a partially cutaway front view of the omnidirectional speaker of the present invention.
[0036]
2 is a perspective view showing the mounting state of the omnidirectional speaker of the present
invention in the vicinity of the medium sound speaker.
[0037]
3 is a partially cutaway front view showing the vicinity of the medium sound speaker of the
omnidirectional speaker of the present invention.
[0038]
Explanation of sign
[0039]
DESCRIPTION OF SYMBOLS 1 Speaker for medium sound 2 Speaker for high sound 3 Speaker 4
for bass 4 Unit support frame 5, 6, 7 Support plate 8 Horn for mid tone 9 Cone for mid tone 10
Cone for high tone 11 Horn unit for bass 12 Through hole 13 Horn support substrate 14 screw
14a extension projection 15 onion eye nut 16 hole 17 iron plate 18 opening 19 step
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