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JPS54140728

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DESCRIPTION JPS54140728
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conventional eco-onetime microphone, and FIG. 2 is a front view partially showing the present invention. 10 · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 15 …coil
spring.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of an eco-friendly microphone. An example of a conventional eco-one-time microphone is shown
in FIG. That is, in FIG. 1, 1 is a diaphragm, 2 is a microphone unit, 3 is a coil spring having one
end attached to the diaphragm 1 and the other end attached to the microphone unit 2. In such an
eco one-time microphone, the diaphragm 1 is vibrated by voice, and this vibration is transmitted
to the microphone (1) //-.rho. On the other hand, the voice is also directly received by the
microphone unit 3. In this manner, vibration due to voice received directly by the microphone
unit and vibration received by the microphone unit by vibrating the diaphragm 1 and further
vibrating the coil spring are well known as one. Will produce a reverberation effect. Such a
conventional eco one-time microphone requires a diaphragm in addition to the microphone unit,
and thus has the disadvantage that the number of parts is large and the overall size of the
microphone must be increased. The present invention provides a compact eco-one-microphone
designed to produce a reverberation effect without using a diaphragm in addition to the
microphone unit. The detailed contents of the eco-one microphone of the present invention will
be described based on the illustrated practical example. In FIG. 2, 10 is a microphone unit, as is
well known to the yoke 11 and its periphery is fixed to the diaphragm 12 held at its periphery
and to the magnet 13 (2) fixed to the central part of the yoke 11 and the yoke 12 And a coil 14.
Reference numeral 15 denotes a coil spring having one end attached to the center of the
diaphragm 12 and the other end attached to the support piece 16. In the microphone of the
present invention having such a configuration, the diaphragm 12 vibrates when voice is received.
At the same time, the vibration of the diaphragm vibrates the coil spring 15 to be transmitted to
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the fixed end T5ajtll, and returns from the fixed end i5a to vibrate the diaphragm 1 plate 12.
That is, the diaphragm is directly vibrated by voice and also vibrated by the vibration returned
through the coil spring 15 to produce the Aspen effect. The eco-one-microphone of the present
invention described above does not use a diaphragm in addition to the microphone unit as in the
prior art, and has a small number of parts and can make the entire microphone extremely small
in size. In particular, the portion of the outer frame of the microphone where the coil spring is
disposed can be made sufficiently thin as long as the coil spring can be disposed, as compared
with the diameter of the portion where the microphone unit is disposed. 3) It can be made
smaller.
Furthermore, it also has a feature that a greater reverberation effect can be obtained as
compared with a conventional type Eco-one microphone using coil springs of the same length.
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