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JPS60259093

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DESCRIPTION JPS60259093
[0001]
The present invention relates to a mechanism for improving the sense of sound of a speaker, and
the gist of the present invention is a speaker system characterized by providing both the same
box G and a substantially horizontal diaphragm and a substantially vertical diaphragm. . 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 a vibration element 5, and a Boyce coil 4. between the center ball of the
magnetic circuit 7.7' and the yoke 8.8 'of the magnetic circuit having the magnet 6.6'. Insert 4
'and inject magnetic fluid 9 to fill in between the voice coil portion and the magnetic pole. The air
is sent from the compressor 12 to the center ball through the pipe 12 into the air hole ILII 'which
passes through the center of the center ball and branches out to the cavity 10.10' in the bobbin
and the bobbin 1 contacts the magnetic circuit It is not necessary to do this, and it is designed to
carry out the daching in the bobbin internal space 10 ░ 10 'to support the vibrating element.
Since the hollow space in the bobbin is soled with magnetic fluid, it may be more compact and /
or 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 suspended by magnetic force between magnetic poles. Thus, the
heat of the voice coil is transmitted to suppress the temperature rise, and the resonance is
suppressed without disturbing the vibration and the self-centering effect is not impaired. The
vibrating element 5 is supported on the loudspeaker box 14 by a bridge 15.15 '. This bridge is
provided in an arcuate shape facing the upper slope of the speaker box 14, inside of which a
yoke 8.8 'is fixed, the diaphragm 2 is loosely fitted in the opening 16 of the speaker box 14, and
the known speaker It is not fixed by a damper etc. to the speaker box like. 2 to 4 is a plus deck in
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which the diaphragm 2 of the speaker floating and vibrating as in the above example is provided
on the upper surface of the box 14 upward and the sound wave upward is covered on the
diaphragm. The light is reflected on the inner surface of the reflecting plate 17 of a quarter
sphere shell and is 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.
In the reflection plate 17 series, as shown in FIG. 3, an axial surface 24 as shown in FIG. 3 or a
flat surface 25 as shown in FIG. 4 can be used. 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 to the vibrating open I 'X] edge changes and
changes, and the sound output characteristic of the speaker is distorted, so this is prevented
Therefore, as shown in FIG. 5, 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 the diaphragm, at least one diaphragm
movement distance is at most 1 A fence 28 of RI [L is provided around the diaphragm. 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 cancels each other. As shown in FIG. 7, each time the duct
29 is provided on the side plate of the box 14, the phase of the sound on the back of the
diaphragm can be inverted to enhance the bass. That is, the diaphragm 2 vibrates in an equal
manner due to the fence 28, and the frequency characteristic is significantly improved. 8 and 9
show a speaker system in which both the horizontal diaphragm 2 and the vertical diaphragm 30
as shown in FIG. 1 are provided in the box 14 as a woofer. -/ Rez? The sound of 7,000 Hz is
emitted upward, the sound of diaphragm 30 is emitted from 6,000 Hz to 40,000 Hz, and the
sound is emitted three-dimensionally so as to wrap the human body 8 It is. As a result, it is
possible to obtain a low cost speaker device efficiently with a small amount of wide band noise
with a small size and large size sound quality by combining one stereo and a super woofer. 10
and 11 show that box 14 has a hole 32 in box 14 in the same direction as vibration direction 31
of diaphragm 2 as in FIG. 1 and diffuses in the direction perpendicular to the hole from the
direction of the hole It is a system J1 provided with a bone-like sound path 33 in space, and one
eater 30 may be provided. Even if the box 14 is small and thin, the sound quality similar to that
of a large speaker box can be obtained. In particular, the sound area 33 of the diffusion space
makes both the low and high frequency bands fatter (the band is expanded by 5 Hertz and the
frequency characteristic is dramatically improved. FIG. 12 shows a vibrator FJ having the upward
diaphragm 2 in the above example, covering the vibrator and projecting the sound forward, on
the front end face 34 of the reflecting plate 17 of the quarter sphere shell, vibration FJ , And the
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light emitting portion 35 for displaying the sound as light, for example, the reflecting plate 17 is
a transparent body of plastic or glass, and L.sub.ED 1, 1,. The light emitting body 37 such as G.D.
is electrically connected to the input circuit to the speaker to emit light with different luminosity
and color according to the volume and sound quality, and the light is emitted by the edge effect
of the transparent rule board. Make it shine.
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 is as eaves as if it were an
eaves (a new sense of sight improves the sense of sound. The electric and mechanical means
such as the control of each of the above-mentioned embodiments can be used by any 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 an 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. 11 is a longitudinal sectional view 2... Diaphragm 17, 24. 25..... Box 32
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