JPS60259095

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DESCRIPTION JPS60259095
[0001]
The present invention relates to a mechanism for improving the sense of sound of a speaker,
wherein a diaphragm is directed upward, a reflecting plate is provided thereon, and a threedimensional speaker characterized in that sound waves from the diaphragm are radiated forward.
It is. The following drawings show an embodiment of the present invention, and FIG. 1 is an
example of a speaker used in the present invention. A diaphragm 2 and a partition 3 are provided
at the center of the bobbin 1 and voice coils 4 are provided at both ends of the bobbin. 4 'and
integrally form a vibration system as the vibration element 5, and the voice coil 4 between the
center ball 7.7' of the magnetic circuit having the magnet 6.6 'and the magnetic poles of the
yokes 8 and 8' Insert 4 'and inject magnetic fluid 9 to fill in between the voice coil portion and
the magnetic pole. The compressor 13 sends air from the pipe 12 to the air ball ILII 'which
passes through the center of the center ball and branches off to the cavity 10.10' in the bobbin
so that the bobbin 1 does not contact the magnetic circuit In the second embodiment, dubbing is
performed in a bobbin interior space of 10.degree. 10 'to support the vibration element. The
cavity in the bobbin is sealed with the magnetic fluid, so the compressor and the container may
be smaller than in the case where the magnetic fluid is not used. The magnetic fluid is, for
example, a mixture of fine particles of magnetic substance such as magnetite and ferrite and
dioctyl azelate of diester type solvent, and the solvent is selected from those having a high
boiling point and a small evaporation amount, and is suspended by magnetic force between
magnetic poles. It is stored, transmits the heat of the voice coil to suppress the temperature rise,
suppresses the resonance without suppressing the vibration, and has no self-centering effect. The
JliJ + element 5 is supported by the speaker box 14 by the bridge 15.15 '. This bridge is provided
in the form of an arch facing the upper plate of the speaker box 14, inside of which a yoke 8.8 'is
fixed, and the diaphragm 2 is loosely fitted in the opening 16 of the speaker box 14, Like a
speaker, it is not fixed to the speaker box with a damper or the like. In FIGS. 2 to 4, the
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diaphragm 2 of the speaker for floating vibration as in the above example is provided upward on
the upper surface of the box 14, and a quarter of the plastic is covered with an acoustic wave
upward on the diaphragm. The light is reflected by the inner surface of the spherical shell
reflector 17 and emitted to the front 19 where the listener 18 is located. The sound flows
substantially parallel to the upright surface 22 including the sound direction 19 and the human
ear 20.21 and reaches the human body, and also flows substantially parallel to the speaker and
the ear 2 (the plane 23 including 1, 21). Thus, the sound is radiated in three dimensions so as to
wrap the human body, and furthermore, the speaker sound is rounded by the reflection plate,
and the presence is enhanced.
The reflecting plate 17 may be the one 24 of the bowl surface as shown in FIG. 3 of the abovementioned or the flat plate 25 as shown in FIG. 5 to 7 show the periphery of the diaphragm 2 of
the speaker of the above example, and the diaphragm 2 is inserted into the circular opening 16
of the box 14 through the gap 26 as shown in FIG. If the diaphragm 2 vibrates and goes out
beyond the opening 16 edge, the air resistance between the vibrating opening edge changes and
changes, and the sound output characteristic of the speaker is distorted. As shown in the figure,
close to the outer edge of the diaphragm 2 at the edge of the opening 16 of the box 14 in the
vibration direction 27 of the diaphragm and at least a maximum vibration moving hole 11llL of
the diaphragm around the diaphragm 28 Provided in As a result, as shown in FIG. 6, the
diaphragm 2 deviates from the edge of the opening 16 and negative pressure on the back of the
diaphragm does not leak like 28 'against positive pressure on the surface of the diaphragm and
does not cancel each other. By providing the duct 29 on the side plate of the box 14 as in the
above, it is possible to invert the sound phase of the diaphragm layer and to enhance the bass.
That is, the diaphragm 2 vibrates in a balanced manner by the fence 28, and the frequency
characteristic thereof is significantly improved. 8 and 9 show a speaker system in which both a
horizontal diaphragm 2 and a vertical diaphragm 30 as shown in FIG. 1 are provided in the box
14 as shown in FIG. Sound of up to 7,000 Hz and diaphragm 30 causes sound of 6,000 to
40.000 Hz to be emitted forward so as to radiate the sound three-dimensionally so as to wrap the
human body 18 is there. As a result, it is possible to obtain a low cost speaker device efficiently
with a small amount of input with a small size and a large size sound quality by combining one
stereo and a super woofer. 10 and 11 show a box 14 having a hole 32 in the box 14 in the same
direction as the vibration direction 31 of the upward vibrating plate 2 as shown in FIG. It is a
system provided with the sound path 33, and may be provided with the twist 30. As a result,
even if the box 14 is small and thin, sound quality similar to that of a large speaker box can be
obtained. In particular, the sound area 33 of the diffusion space greatly expands both the low
range and the high range, and the low range has a 5 Hz wide-spreading frequency characteristic
that is dramatically improved. FIG. 12 covers the vibration element having the upward-directed
diaphragm 2 in the above example, and projects the sound forwardly to the front end face 34 of
the reflecting plate 17 of a quarter sphere shell. For example, the reflector 17 is a transparent
body of plastic or glass, and the light emitter 37 such as LED or LGD provided close to the end
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face of the lower edge 36 is a speaker. The light is electrically connected to an input circuit to
emit light with different light intensity and color according to the volume and sound quality, and
the light is used to make the end face 34 bright by the etching effect of a transparent reflector.
Alternatively, one or a plurality of light emitting portions 35 of the light emitting body may be
provided on the front end surface 34 as shown in FIG. This makes it possible to display the light
emitted from the front end of the reflector as a high-lot lamp, and to change the intensity,
position, and color of the light due to high and low sound quality and loudness and loudness. The
effect is remarkable in dark rooms. In particular, when the sound is displayed by the color of
light, the arc-shaped portion at the front end of the spherical shell glows like a rainbow and the
sense of sound is enhanced by a completely new visual and auditory sense. The electric and
mechanical means such as the control of each of the above-mentioned embodiments can use
known means. Further, the respective embodiments are closely related to each other, and
combinations thereof, and various aspects thereof are all included in the present invention.
[0002]
Brief description of the drawings
[0003]
1 shows the embodiment of the present invention, and FIG. 1 is a longitudinal sectional view
from FIG. 2 to FIG. 4 is a perspective view from FIG. 5 to FIG. 7 is a longitudinal sectional view
from FIG. 8 to FIG. 1I is a longitudinal sectional view 2... Diaphragm 17, 24. 25... ....... holes 5 ......
and vibration Niremen 135 ........ the light-emitting portion whistle 3 Orchestra rod 9 Zufueotsuspeaking team g Komaminato!
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