close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2005086231

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2005086231
PROBLEM TO BE SOLVED: To provide a microphone device capable of sufficiently removing the
influence of static electricity. SOLUTION: A sound collecting hole 101 is provided in a housing
100 of a microphone device. The microphone 103 is fixed inside the microphone device on the
central axis of the sound collection hole 101. Then, a conductive net 102 made of a conductive
material is provided between the sound collecting hole 101 and the sound input surface of the
microphone 103, and the sound collecting hole 101 is closed to block the inside and outside of
the housing 100. There is. The conductive net 102 is also grounded. Air vibration of the input
voice passes through the conductive net 102 and reaches the microphone 103. On the other
hand, when an electrostatically charged object approaches the sound collection hole 101, the
static electricity discharged from the object is grounded through the conductive net 102.
[Selected figure] Figure 1
Microphone device
[0001]
The present invention relates to a microphone device suitable for, for example, a child device
terminal of a nurse call system.
[0002]
As well known, the conventional microphone device has a problem that external static electricity
is applied to generate noise or affect the electric circuit.
18-04-2019
1
On the other hand, in the related art, static electricity is discharged to the ground-side electrode
terminal by providing the surface having the ground-side electrode terminal of the microphone
so as to face the sound collection hole of the housing of the microphone device ( For example,
refer to Patent Document 1). However, even such a method could not sufficiently suppress the
influence of static electricity. Unexamined-Japanese-Patent No. 10-98790 gazette.
[0003]
The conventional microphone device has a problem that the influence of static electricity can not
be sufficiently removed. The present invention has been made to solve the above-mentioned
problems, and an object of the present invention is to provide a microphone device capable of
sufficiently removing the influence of static electricity.
[0004]
In order to achieve the above object, the present invention provides a microphone device for
converting sound into an electric signal, comprising: a sound collecting hole provided in a
housing; and a conductive net made of a conductive material and covering the sound collecting
hole. And a connection means for connecting the conductive net to the ground pole, and a
microphone for converting the sound input through the sound collection hole and the conductive
net into an electric signal.
[0005]
As described above, in the present invention, the static electricity discharged into the housing
from the sound collection hole provided in the housing is grounded via the conductive net, and
the input sound passes through the conductive net and is used as a microphone. And convert it
into an electrical signal.
Therefore, according to the present invention, it is possible to provide a microphone device
capable of preventing electrostatic discharge to the microphone without impairing the sound
collection performance by the microphone.
[0006]
18-04-2019
2
Hereinafter, an embodiment of the present invention will be described with reference to the
drawings. FIG. 1 shows the configuration of a microphone device according to a first embodiment
of the present invention, and in this figure, in particular, shows a portion for accommodating the
microphone in the device.
[0007]
A sound collection hole 101 is provided in the housing 100 of the microphone device. The
microphone 103 is fixed inside the microphone device on the central axis of the sound collection
hole 101. Then, a conductive net 102 made of a conductive material is provided between the
sound collecting hole 101 and the sound input surface of the microphone 103, and the sound
collecting hole 101 is closed to block the inside and outside of the housing 100. There is. The
conductive net 102 is also connected to the ground pole of the circuit.
[0008]
With such a configuration, in the microphone device, the air vibration of the input sound passes
through the conductive net 102 to reach the microphone 103, where it is converted into an
electrical signal. This electrical signal is amplified by an amplifier (not shown) and then output to
the outside as an audio signal. On the other hand, when an electrostatically charged object
approaches the sound collection hole 101, the static electricity discharged from the object is
grounded through the conductive net 102.
[0009]
As described above, in the microphone device having the above configuration, static electricity
invading through the sound collection hole 101 is grounded through the conductive net 102, and
air vibration passes through the conductive net 102 and is converted into an electric signal by
the microphone 103. It is like that. Therefore, according to the microphone device of the above
configuration, electrostatic discharge to the microphone 103 can be prevented without
deteriorating the sound collecting performance by the microphone 103. Although the sound
collecting holes 101 are covered from the inside of the case with the conductive net 102 in the
above embodiment, the same effect can be expected by covering the sound collecting holes 101
18-04-2019
3
from the outside of the case.
[0010]
FIG. 2 shows the configuration of a microphone device according to a second embodiment of the
present invention, and in this figure, in particular, shows a portion for accommodating the
microphone in the device. A sound collection hole 101 is provided in the housing 100 of the
microphone device. The microphone 103 is fixed inside the microphone device on the central
axis of the sound collection hole 101. Then, a cylindrical waveguide 104 is provided between the
sound collecting hole 101 and the sound input surface of the microphone 103, and guides the air
vibration of the input sound arriving through the sound collecting hole 101 to the microphone
103. Further, inside the waveguide 104, a conducting portion 104a made of a conductive
material is provided, and connected to the ground pole of the circuit. A gap is provided between
the housing 100 and the waveguide 104, and between the waveguide 104 and the microphone.
[0011]
With such a configuration, in the microphone device, the air vibration of the input sound passes
through the waveguide 104 and directly reaches the microphone 103, where it is converted into
an electrical signal. This electrical signal is amplified by an amplifier (not shown) and then output
to the outside as an audio signal. On the other hand, when an object charged with static
electricity approaches the sound collection hole 101, the static electricity discharged from the
object is grounded through the conductive portion 104a provided on the inner surface of the
waveguide 104.
[0012]
As described above, in the microphone device having the above-described configuration, the
static electricity intruding through the sound collection hole 101 is grounded through the
conduction portion 104 a provided on the inner surface of the waveguide 104. Therefore,
according to the microphone device of the above configuration, electrostatic discharge to the
microphone 103 can be prevented without deteriorating the sound collecting performance by the
microphone 103.
18-04-2019
4
[0013]
The present invention is not limited to the above embodiment as it is, and at the implementation
stage, the constituent elements can be modified and embodied without departing from the scope
of the invention. Further, various inventions can be formed by appropriately combining a
plurality of constituent elements disclosed in the above embodiment. Further, for example, a
configuration in which some components are deleted from all the components shown in the
embodiment is also conceivable. Furthermore, the components described in different
embodiments may be combined as appropriate.
[0014]
For example, in the second embodiment, a gap is provided between the housing 100 and the
waveguide 104, and between the waveguide 104 and the microphone, for example. However, as
shown in FIG. The body 100 and the waveguide 104 may be in contact with each other. It goes
without saying that the present invention can be implemented in various ways without departing
from the scope of the present invention.
[0015]
FIG. 1 shows a configuration of a first embodiment of a microphone device according to the
present invention. The figure which shows the structure of 2nd Embodiment of the microphone
apparatus concerning this invention. FIG. 3 is a view showing the configuration of a modification
of the microphone device shown in FIG. 2;
Explanation of sign
[0016]
DESCRIPTION OF SYMBOLS 100 ... Housing | casing, 101 ... Sound collection hole, 102 ...
Conductive net, 103 ... Microphone, 104 ... Waveguide, 104a ... Conduction part.
18-04-2019
5
Документ
Категория
Без категории
Просмотров
0
Размер файла
12 Кб
Теги
description, jp2005086231
1/--страниц
Пожаловаться на содержимое документа