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DESCRIPTION JPS5529898

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DESCRIPTION JPS5529898
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of
the present invention, FIG. 2 is a cross-sectional view of the same parts, FIG. 3 is a schematic
circuit diagram in the same operation, and FIG. FIG. 5 is a schematic circuit diagram of the
embodiment, and FIG. 5 is a front view of still another embodiment. 1 ииииии Speaker body, 5 иии иии
Voice coil, 9 и и и и Center pole, 13 и и и Light emitting diode, 18 и и и и и и и и и и и и
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker
system in which the input voltage level to the loudspeaker can be easily determined visually. In
general, the speaker supplies an input voltage to this and vibrates the diaphragm according to
the level of the input voltage), or the voltage ? 7 / ? 2 level inputted to this is the vibration of
the diaphragm The fatness of the sound generated by is determined. However, knowing the input
voltage level with such loudness is very inaccurate, and it is difficult to determine how loud the
loudness is. In view of such a conventional defect, the present invention makes it possible to
visually determine the input voltage level to the speaker by means of a light emitter, thereby
making it possible to easily determine whether the input is excessive or not. One embodiment
will be described below with reference to FIGS. 1 to 3. A speaker main body 1 is integrated with a
frame 2, a diaphragm 3, a dust cap 4, a voice coil 5, a damper 6, a magnet 7, a top plate 8 and a
hollow center ball 9, as is well known. It comprises a plate 10, an input terminal 11 and the like.
The light emitting diode 13 is attached to the tip of the center pole 9 via the substrate 12 in the
direction of the opening of the light emitting diode 13 or the diaphragm 3, and the lead 14a of
the light emitting diode 8 '' '3'13' 14 b is connected to the input terminal 11 and connected in
parallel to the voice coil 5. Reference numeral 15 denotes a protection resistor of the number
109 inserted in the middle of the lead wire 14 b, and the light emitting diode 13 is connected in
series to the resistor 16. By configuring as described above, the input terminal 11 is connected to
the output side of the amplifier circuit 16 as shown in FIG. 3, and when the input voltage is
supplied, the diaphragm 3 is vibrated and emitted simultaneously. The light-emitting diode 13 is
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turned on in accordance with the magnitude of the input voltage, and bright when the input
voltage is large and vice versa when the input voltage is small. Therefore, by forming the dust
cap 4 with a transparent cloth such as a mesh cloth or polyethylene film, the light emission
degree of the light emitting diode 13 can be determined visually from the front of the speaker.
Therefore, the level of the input voltage Whether it is an excessive input or not can be easily
determined to a one-passer. 4-Fig. 4 shows another example in which the diode 17 is connected
in parallel with the light emitting diode 13 in reverse polarity and in order to reduce distortion
caused by connecting the light emitting diode 13. Fig. 5 shows a gasket 18 part. In the example,
the light emitting diode 13 is provided.
It is to be noted that the light emitting diode is used in the above embodiment, or the same is
true for other light emitters. As described above, the present invention can be determined by
visual observation according to the level of the input voltage to the speaker or the light emission
degree of the light emitter, so it is possible not only to prevent excessive input but also to emit
light from the light emitter according to the input voltage level. Because the brightness changes,
the design effect is excellent, and its practicality is great.
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