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The present invention relates to a mechanism for improving the sense of sound of a speaker, and
is characterized in that each edge of the width of the maximum vibration movement distance of
the diaphragm is provided in the vibration direction of the diaphragm close to the outer edge of
the diaphragm. The gist of the present invention is as follows. The following drawings show an
embodiment of the present invention, and FIG. 1 shows an example of a speaker used in the
present invention, in which a diaphragm 2 and a partition 3 are provided at the center of a
bobbin l and voice coils are provided at both ends of the bobbin. The voice coil 4 is wound
between the center ball 7.7 'and the yoke 8.8' of the magnetic circuit which forms the vibration
system as the vibration element 5 by winding the 4.4 'as a whole and forming the vibration
element 5 4 'and inject the magnetic fluid 9 so as to fill the space between the voice coil portion
and the magnetic pole. The air is sent from the compressor 12 from the pipe 12 to the air hole
11.11 'which passes through the center of the center pole and branches off to the cavity 10.10'
in the bobbin and the bobbin 1 contacts the magnetic circuit In the second embodiment, dubbing
is performed in the bobbin inner space 10 ° 10 'to support the vibration element. Since the
cavity in the bobbin is sealed with magnetic fluid, the compressor may be smaller than in the
case where no magnetic fluid is 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 a self-centering effect. The vibrating element 5 is
supported by the blue capo nox 14 by yellowtails 15 and 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 FIG. 2 to FIG. 4, the diaphragm 2 of the
speaker that floats and vibrates as in the above example is provided upward on the upper surface
of the box 14 and a plastic quarter ball is covered with a sound wave upward on the diaphragm.
The light is reflected by the inner surface of the 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 flat surface 23 including the speaker and the ears 20 and
21 to reach the human body 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
sense of reality 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 and at the edge of the opening 16 of the box 14 in the
vibration direction 27 of that diaphragm and at least a maximum vibrational travel distance 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
vibrating plate 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
shown, the phase of the sound on the back of the diaphragm can be reversed 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. The sound of 7.00 'O hertz is emitted upward, and the diaphragm 30 emits
the sound of ooo hertz to 40,000 hertz forward, and the sound radiates so as to wrap the human
body 18 three-dimensionally. It is As a result, it is possible to obtain a low-cost speaker device
efficiently with a small input and a small input with a small size but a large size front needle that
doubles as a stereo and a super woofer in one unit. 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
tweak 30. As a result, even if the box 14 is small and thin, the same sound quality as the large
speaker box can be obtained. In particular, the bass region and the treble region are both greatly
expanded by the sound path 33 in the diffusion space, and the bass region has a 5 Hz widespreading 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 an LED or LGD provided close to the end face of the lower edge 36 thereof is a speaker. The
light is electrically connected to an input circuit of the light source 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 edge effect of the 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 by the high / low of the sound quality, and the loudness of the
sound The effect is remarkable in a dark room. 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 improved by a completely new visual and auditory sense. The electrical
and mechanical means such as the control of each of the foregoing 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.
Brief description of the drawings
Fig. 1 shows an embodiment of the present invention, Fig. 1 is a longitudinal sectional view, Fig.
2 is a perspective view, Fig. 5 is a longitudinal sectional view, Fig. 7 is a perspective view and Fig.
10 is a perspective view. 11 is a longitudinal sectional view 2 ··· · · · diaphragm 17 24 · 25 · · ·
reflector 28 · · · · · · · · · · · · · box 32 · · · ............ hole 5 ........ Josho the vibratory element 35 ........
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