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DESCRIPTION JPS5840996

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DESCRIPTION JPS5840996
[0001]
The present invention relates to a speaker device provided with a scale display plate. The
conventional loudspeaker is configured as shown in FIG. 1 and FIG. That is, the 7 frames 6 are
coupled to the magnetic circuit 5 configured by incorporating the ring-shaped upper plate 4 in
the same manner as the ring-shaped magnet 3 on the plate 2 having the center pole 1. At the
same time, the peripheral portion of the diaphragm 8 is bonded by bonding or the like, the voice
coil 9 is coupled to the central portion of the diaphragm 8, the middle portion of the voice coil 9
is held by the damper 10, and the lower portion of the voice coil 9 is The dust cap 12 is fitted on
the magnetic gap 11 of the magnetic circuit 5 without eccentricity, and the upper surface of the
central portion of the diaphragm 8 is attached. In such a speaker, when an excessive input is
applied, the temperature of the voice coil 9 abnormally rises, so that an abnormal sound is
generated due to coil loosening, or a failure such as a short or disconnection due to carbonization
of the insulating film of the coil occurs. Was. In order to solve such problems, the insulation
coating material of the voice coil 9 has been improved, but recently it has not tended to be a
drastic measure, as the ? ? V load tends to increase. . The present invention eliminates the
above-mentioned conventional defects, provides a scale display board for displaying an input
signal applied to a speaker, gives a warning so as to reduce excessive input, and generates a
speaker failure. An object of the present invention is to provide a speaker device that is
configured to be blocked. The present invention is a tuner to achieve this object. The input from
the source such as tape deck or record player is amplified by the main amplifier, and the signal
adjusted by the level controller of the speaker is partially supplied to the speaker and partially
supplied to the display filter, and the scale display on the front of the speaker It is configured to
be able to confirm the application of excessive input. An embodiment of the present invention
will be described below with reference to FIGS. The general configuration of the present
invention will be described with reference to FIG. 13 is a source such as a tuner, a tape deck, a
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record player, etc. A signal from this source 13 is amplified by an amplifier 14 such as Buri,
Main, etc., and the amplified signal is adjusted by an all-speaker level controller 16. And for
display (supplied to the D filter 17, the output of this filter 17 is applied to the scale display plate
18, and the magnitude of the input signal applied to the speaker 16 The specific structure of the
embodiment 18 will be described with reference to FIGS.
The speaker 16 is a plate 20. The frame 24 f is coupled to the magnetic circuit 23 configured by
the ring-shaped magnet 21 and the ring-shaped upper plate 22, and the peripheral portion of the
diaphragm 26 is coupled to the peripheral portion of the conoframe 240 together with the
gasket 26. A voice coil 27 is coupled to the central portion of 26 and the middle portion of the
voice coil 27 is held by a damper 28 so that the lower portion of the voice coil 27 fits into the
magnetic gap 29 of the magnetic circuit 23 without eccentricity. A dust cap 3o is adhered to the
upper surface of the central portion 26. A scale display plate 18 is disposed on the front of the
speaker 16. The scale display plate 18 is press-fit into the center hole of the center pole 19 and
coupled to the upper end of the support vibrator 31 penetrating the center of the dust cap 30,
and in the support pipe 31, the signal from the filter 17 is transmitted to the scale display plate
18. The lead wire 32 to apply is accommodated. Further, as shown in FIG. 6, the scale display
plate 18 is arranged in the form of a light emitting diode lattice along the frequency and sound
pressure level axis to display the input state applied to the speaker 16 for each frequency.
Furthermore, the allowable input is 10 dB, and it is lit with blue light below that, for example,
with red light lit above O dB, and the part shown by hatching is the part that is lit in the state of
currently playing. Is shown. If this ignition part becomes OdB and red lighting increases, an
excessive input is applied and there is a possibility that the voice coil 27 may be destroyed. The
input is applied to indicate that the voice coil 27 is in a safe state. In addition to the diode as a
display element, liquid crystal, electroluminescence, plasma display tube. A fluorescent display
tube or the like may be used. Further, this scale display plate 18 may be configured to be
attached to the mounting portion 33 in which a part of the frame 24 is made to project as shown
in FIG. 7, and as shown in FIG. And the scale display plate 1B may be assembled side by side.
Further, one scale display plate 18 may be provided on two-way and three-way speaker systems.
As described above, since the speaker device according to the present invention is configured,
the magnitude of the input applied to the speaker is displayed by the scale display plate to
determine whether the excessive input is applied to destroy the voice coil. It can be judged
immediately, the input level can be adjusted, the speaker can be used safely, the life can be
extended, and the industrial value is great.
[0002]
Brief description of the drawings
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[0003]
FIG. 1 is a top view of a conventional speaker, FIG. 2 is a cross-sectional view thereof, FIG. 3 is a
block diagram showing a schematic configuration of an embodiment of a speaker apparatus of
the present invention, and FIG. 6 is a sectional view of the same, FIG. 6 is a top view of the same
scale display plate, and FIGS. 7 and 3 are top views of a speaker section of another embodiment.
13 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и ........ иии Magnetic gap, 31 и и и и и и и Support pie, ?, и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и panel. Name of Agent Attorney Nakao Toshio Other 1
person Figure 1 Figure 2! & 6 Figure 315 80 G # / $ 2. IIK IK 201 FREQUENCY (Run crystal 7 set
f figure 8
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