JP2004040345

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DESCRIPTION JP2004040345
An object of the present invention is to provide a microphone having a simple structure which is
excellent in storability and can be extended and contracted in the length direction. A telescopic
microphone 100 according to the present invention includes a sound collection unit 10, an
expandable rod 12 having one end connected to the sound collection unit 10, and a microphone
cord 11 having one end connected to the sound collection unit 10. A support means 13 rotatably
supporting the rod 12 is provided, and the position of the sound collection unit can be adjusted.
Also, the rod is conductive and can be used as an antenna. The microphone cord can be wound
around the rod or disposed along the rod, and when disposed along the rod, the other end of the
microphone cord is connected to the winding and unwinding mechanism It is characterized by
[Selected figure] Figure 1
Telescopic microphone
[0001] The present invention relates to a microphone suitable for use as a desktop microphone
or attached to a stand, and more particularly to a microphone which is excellent in resistance and
storage and can be stretched in a longitudinal direction. About. [0002] A gooseneck microphone
200 has been known as a microphone capable of adjusting the distance between the mouth of a
speaker and a sound pickup unit (microphone unit). An example of a conventional gooseneck
microphone 200 is shown in FIG. The gooseneck microphone 200 includes a sound collection
unit 20 for receiving the voice of the speaker, and a bendable gooseneck 21 having one end
connected to the sound collection unit 20. The speaker appropriately bends the goose neck 21
by hand to adjust the distance between the sound collection unit 20 and the mouth according to
the amount of voice of the speaker and the use condition. However, in the gooseneck microphone
200, the inside of the gooseneck 21 has to pass a microphone cord (not shown) whose one end is
connected to the sound collection unit 20, and the structure is complicated. Further, since the
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gooseneck 21 is only flexible and does not expand or contract in the length direction, the
gooseneck 21 can be compactly folded even when the goose neck 21 is folded by moving the
sound collection unit 20 in the length direction of the microphone when not in use. There is a
problem that it is difficult to accommodate the microphone 200 in a compact manner, since a
gooseneck having a relatively long length and therefore a large radius of curvature when bent is
required to make the gooseneck 21 easy to bend. In addition, it is also a problem that goosenecks
are expensive. SUMMARY OF THE INVENTION The present invention has been made in view of
the above problems, and it is an object of the present invention to provide a microphone having a
simple structure which is excellent in storability and can be expanded and contracted in the
length direction. To aim. In order to achieve the above object, the invention according to claim 1
comprises: a sound collection unit; an expandable rod having one end connected to the sound
collection unit; A microphone cord connected to the sound collection unit, and supporting means
for rotatably supporting the rod, wherein the position of the sound collection unit can be
adjusted. Provide a free microphone. The invention of claim 2 is characterized in that the rod is
made conductive and can be used as an antenna.
The invention of claim 3 is characterized in that the microphone cord is wound around the rod.
The invention of claim 4 is characterized in that the microphone cord is disposed along the rod,
and the other end of the microphone cord is connected to a winding and rewinding mechanism.
The invention of claim 5 is characterized in that the sound collection unit is configured to be
removable from the rod. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The
structure and operation of one embodiment of a telescopic microphone according to the present
invention will be described below with reference to the drawings. FIG. 1 shows the expanded
state of the retractable microphone, and FIG. 2 shows the contracted state of the same
microphone. In FIG. 1 and FIG. 2, the telescopic microphone 100 has a sound collecting unit 10, a
microphone cord 11 whose one end is connected to the sound collecting unit 10, one end is
connected to the sound collecting unit 10, and the microphone cord 11 is on the outer periphery
It includes a telescopic rod 12 to be wound, and a support 13 connected to the other end of the
telescopic rod 12 and rotatably supporting the telescopic rod 12. The support 13 is fixed to a
base or other appropriate member by appropriate means such as screwing. The other end of the
microphone cord 11 is provided with a plug 14 for connection to equipment incorporating a
circuit such as an amplifier. The sound collection unit 10 is the same as the sound collection unit
20 in the conventional microphone, and receives the voice of the speaker. The microphone cord
11 is, for example, a shield wire whose one end is connected to the sound collection unit 10, and
the other end is connected to a plug 14 serving as an input terminal to other equipment etc.
Voice is transmitted to other equipment through the microphone cord 11. For example, when the
plug 14 is connected to a voice identification computer, the voice received by the sound
collection unit 10 is input to the computer for voice identification, and the result is displayed on
a display or the like connected to the computer. . As shown in FIGS. 1 and 2, the telescopic rod
12 has a structure in which rod-like portions having a plurality of (three in FIG. 1) different inner
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diameters are connected in a nested manner, The portion closer to 10 has a smaller inner
diameter. For this reason, the speaker can hold the sound collection unit 10 at the tip of the
telescopic rod 12 and can extend or retract it to an appropriate position around the mouth of the
speaker. The microphone cord 11 is wound around the outside of the telescopic rod 12 in the
form of a curled cord, and has some play even when the telescopic rod 12 is the longest, and
does not overlap even when the telescopic rod 12 is the shortest. , Of appropriate length and
stiffness.
When the telescopic rod 12 is extended, the microphone cord 11 wound around the outer
periphery of the telescopic rod 12 applies a tension in a direction in which the telescopic rod 12
is contracted. As described above, it is preferable to use one which has a holding force to some
extent due to an internal friction structure or the like and which can be fixed at an arbitrary
length against the tension from the microphone cord 11. When the telescopic rod 12 is
contracted, the microphone cord 11 is contracted by its own tension with the telescopic rod 12
as a guide, so that as shown in FIG. Further, as described above, since the microphone cord 11 is
set to an appropriate length, there is no fear of disconnection. The support 13 is, for example, a
ball joint, and any mechanism can be adopted as long as it is a mechanism that can move the
telescopic rod 12 and hence the sound collection unit 10 to an arbitrary position. As described
above, in the telescopic microphone 100 shown in FIG. 1 and FIG. 2, since the telescopic rod 12
is rotatably attached to the support 13, the sound pickup unit is selected according to the user's
voice and usage conditions. The sound pickup unit 10 can be placed at an appropriate position
while adjusting the distance to 10 and the mouth. Therefore, even when howling occurs, the
position of the sound collection unit 10 can be easily changed, so that howling can be effectively
avoided. In addition, since the telescopic microphone 100 can shorten its overall length by
retracting the telescopic rod 12, it can be stored compactly, and can be used as an attached
microphone of equipment to be moved and used It is suitable for Furthermore, since the
structure is simple and the number of components is small, it can be realized at low cost, and
assembly and maintenance are easy. Although one embodiment of the microphone according to
the present invention has been described above, the present invention is not limited to such an
embodiment. For example, the cross-sectional shape of the telescopic rod is not limited to a
circle, and any cross-sectional shape such as a square or an oval can be used. Further, by making
the telescopic rod made of a conductive material and having the same structure as the rod
antenna, it is possible to use the telescopic rod of the microphone as an antenna of, for example,
a transmitter or a receiver. Furthermore, a microphone cord winding / rewinding mechanism is
provided at the base of the telescopic rod, and the microphone cord is disposed through the
telescopic rod or along the outer surface of the telescopic rod and connected to the winding /
rewinding mechanism. Accordingly, it is also possible to wind up or rewind the microphone cord
according to the extension length of the extension rod so that the microphone cord does not
loosen even when the extension rod is extended or retracted.
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Furthermore, since the sound collection unit can be made detachable from the rod, it can be
disposed at a more free position when it is not necessary to fix the microphone. As a result, when
it is desired to fix the sound collection unit, it can be attached to the rod, and can be removed and
used when it is desired to use it in a free position. As can be understood from the detailed
description of one embodiment of the telescopic microphone according to the present invention,
according to the invention of claim 1, the sound pickup unit is connected to one end. Because the
rod can be extended and contracted, it is easy to adjust the distance between the sound collection
unit and the mouth, and the sound collection unit can be adjusted to the optimum position
according to the user's voice volume and usage conditions. Howling can be effectively avoided,
and the structure is simple, assembly and cord replacement are easy, and maintenance is
excellent. [0021] According to the invention of claim 2, it is possible to use the rod antenna
provided in the transmitter or the receiver as the telescopic rod, and to divert the existing rod
antenna member as the support means of the telescopic rod. In addition to being able to
effectively use the limited space, it is possible to reduce costs. In particular, it is suitable for
application to a wireless microphone device. According to the invention of claim 3, when the rod
is contracted, the microphone cord is contracted by its own tension, so that no burden is placed
on the microphone cord and there is no fear of disconnection, and the rod is contracted when the
rod is contracted. As a guide for the microphone cord, there is an effect that the cord does not
hang down. In addition, since inexpensive commercial curled cords can be used, costs can be
reduced. The invention of claim 4 produces an effect that the microphone cord does not sag even
when the rod is extended and contracted. According to the fifth aspect of the present invention,
since the sound collection unit is detachable from the rod, it is possible to further arrange the
microphone in a free position when it is not necessary to fix the microphone. BRIEF
DESCRIPTION OF THE DRAWINGS FIG. 1 is a view schematically showing an embodiment of a
microphone according to the present invention, in which a telescopic rod is extended. FIG. 2
schematically shows an embodiment of a microphone according to the present invention,
showing the telescopic rod in a contracted state. FIG. 3 shows a gooseneck microphone according
to the prior art. [Description of the code] 10 sound pickup unit 11 microphone cord 12
contraction rod 13 support 14 plug 100 telescopic microphone 200 gooseneck microphone
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