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JP2015140128

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DESCRIPTION JP2015140128
Abstract: The present invention provides an on-vehicle microphone device incorporated in a sun
visor of a vehicle, capable of maintaining the direction of directivity in a fixed direction
regardless of the angle of the sun visor. An in-vehicle microphone device rotatably mounts a
directional microphone 7 on a microphone attachment portion 6 provided at a front end portion
of a sun visor 1, and a front surface 8a of the directional microphone 7 relates to an angle of the
sun visor 1. Instead, a weight 14 is provided on the directional microphone 7 so as to always face
the speaker in the vehicle room. [Selected figure] Figure 2
In-vehicle microphone device
[0001]
The present invention relates to an on-vehicle microphone device incorporated in a sun visor of a
car and used for voice input to a car navigation device, a mobile device such as a mobile phone
or a tablet terminal in the car.
[0002]
Conventionally, it comprises a support attached to a sun visor of a car, a flexible tube extended
from the support, a microphone case attached to the tip of the flexible tube, and a unidirectional
microphone incorporated in the microphone case An on-vehicle microphone device is known
(Patent Document 1).
[0003]
Japanese Patent Application Laid-Open No. 9-298785
03-05-2019
1
[0004]
In the above-described conventional on-vehicle microphone device, the direction of directivity
deviates from the intended direction when the sun visor moves, but bending the flexible tube
causes the directivity to be directed to the intended direction. it can.
In other words, there is a problem that it is necessary to manually adjust the direction of
directivity every time the sun visor is moved.
[0005]
The present invention has been made in view of the problems described above, and is an onvehicle microphone device incorporated in a sun visor of a car, which can maintain the directivity
direction in a constant direction regardless of the angle of the sun visor. It is an object of the
present invention to provide a microphone device.
[0006]
An on-vehicle microphone device having a configuration according to the present invention as
means for solving the problems described above is an on-vehicle microphone device incorporated
in a sun visor of a car, and is directed to the microphone attachment portion provided at the tip
of the sun visor The directional microphone is characterized in that a weight is attached to the
directional microphone so that a front face of the directional microphone always faces the
speaker in the passenger compartment regardless of the angle of the sun visor.
[0007]
According to the present invention, the directional microphone is rotatably attached to the
microphone attachment portion provided at the tip of the sun visor, and the front of the
directional microphone is always directed to the speaker in the passenger compartment
regardless of the angle of the sun visor. In addition, by providing a weight to the directional
microphone, for example, the directional microphone is rotated according to a change in the
angle of the sun visor so that the front of the directional microphone always faces the speaker in
the vehicle cabin. Maintaining the direction of directivity in a fixed direction, that is, in the
direction of a speaker in the passenger compartment, regardless of the angle of the sun visor
with a simple configuration without using a microphone angle adjustment mechanism or the like
that adjusts the angle of Thus, it is possible to provide a sun visor built-in type in-vehicle
03-05-2019
2
microphone device.
[0008]
It is a perspective view showing a sun visor in which an in-vehicle microphone device as an
embodiment of the present invention is incorporated.
It is a side view which shows the structure of the vehicle-mounted microphone apparatus shown
in FIG.
It is a front view which shows the structure of the vehicle-mounted microphone apparatus shown
in FIG.
[0009]
Hereinafter, an on-vehicle microphone device as an embodiment of the present invention will be
described based on the drawings.
[0010]
As shown in FIG. 1, a sun visor 1 incorporating a car-mounted microphone device as an
embodiment of the present invention is provided at an upper portion of a driver's seat in a room
of a car.
That is, it is provided on the right above the windshield 3 (so-called, because of the right handle
4) in the ceiling 2 of the passenger compartment.
This sun visor 1 is usually raised to the ceiling 2 side (solid line state), and lowered to the
windshield 3 side when the sunlight is dazzling (two-dot broken line state), blocking the sunlight
and ensuring the driver's visibility Do.
[0011]
03-05-2019
3
Further, as shown in FIG. 2, the sun visor 1 is rotatably mounted on a shaft 5 mounted on the
ceiling 2 side of the vehicle cabin and extending substantially horizontally from the right to the
left of the vehicle body. It can be turned in two directions, the raising direction to the ceiling 2
side and the lowering direction to the windshield 3 side.
[0012]
Then, an on-vehicle microphone device as an embodiment of the present invention is
incorporated in the sun visor 1.
That is, as shown in FIGS. 1 to 3, the microphone attachment portion 6 is provided at the center
on the tip end side of the sun visor 1, and the directional microphone microphone 7 is rotatably
attached to the microphone attachment portion 6 and its directivity The directional microphone
7 is provided with a weight 14 so that the front of the sexual microphone 7 always faces the
speaker (driver) inside the vehicle regardless of the angle of the sun visor 1.
[0013]
As shown in FIG. 2 and FIG. 3, the microphone attachment portion 6 is opened at three surfaces,
the front surface 3 a of the sun visor 1, the back surface 1 b and the front end surface 1 c. It
consists of the notch provided in.
[0014]
The directional microphone microphone 7 is formed by housing an electro-acoustic conversion
component such as a diaphragm (not shown) in a box-shaped microphone housing 8. A sound
hole (for direct sound) is formed on the front surface 8a of the microphone housing 8. 9 is
provided, and it has directivity 7a to the front which at least front 8a of microphone housing 8
faces.
In this directional microphone microphone 7, a unidirectional microphone microphone having
directivity 7a in one forward direction to which the front surface 8a of the microphone housing 8
faces, directivity in the front one direction to which the front 8a of the microphone housing 8
faces. A bidirectional microphone microphone having directivity 7a and directivity in two
directions in the opposite direction, a beam forming microphone in which these unidirectionality
03-05-2019
4
and bidirectionality are formed by beam forming, and the like are used.
[0015]
The directional microphone microphone 7 is provided with a pair of rotary shafts 10 in a state of
projecting at right angles from both left and right side surfaces 8 b of the microphone housing 8.
The two rotation shafts 10 are disposed on one horizontal axis in the horizontal direction.
That is, they are arranged coaxially.
[0016]
On the other hand, on the sun visor 1 side, a pair of bearing portions 11 are provided in a state
in which the inner ends are opened in the left and right side walls 6 a of the microphone
attachment portion 6. The two bearing portions 11 are disposed on a single horizontal axis
parallel to the shaft 5 which is the rotational center of the sun visor 1. That is, they are arranged
coaxially.
[0017]
The directional microphone microphone 7 is pivoted about the two rotation shafts 10
substantially horizontal to the microphone attachment portion 6 of the sun visor 1 by the two
rotation shafts 10 being rotatably supported by the two bearing portions 11 respectively. Is
mounted possible.
[0018]
Here, in order to rotate the directional microphone microphone 7 more smoothly, the rotating
shaft 10 is supported by the bearing portion 11 via the bearing 12.
Further, the rotating shaft 10 is a cylindrical shaft, and the cable core 13 for the power supply,
03-05-2019
5
ground, signal, etc. of the directional microphone microphone 7 is drawn from the inside of the
microphone housing 8 through the rotating shaft 10 into the outside sun visor 1. It is done.
[0019]
In addition, in this directional microphone microphone 7, so that the front face 8a of the
microphone housing 8 always faces the speaker inside the vehicle regardless of the angle of the
sun visor 1, specifically, faces the driver's head That is, a weight 14 is provided to set the position
of the center of gravity of the directional microphone microphone 7 below the rotation axis 10 so
as to face the rear of the vehicle body.
[0020]
Here, in the directional microphone microphone 7, the rotary shaft 10 is provided on one
horizontal horizontal axis passing the center of the microphone housing 8, while the weight 14 is
the center of gravity of the directional microphone microphone 7. The microphone housing 8 is
provided at a position lower than the rotation axis 10 so that the front surface 8a of the
microphone housing 8 is independent of the angle of the sun visor 1 so that It is always located
in a substantially vertical plane, and the microphone mounting posture facing the in-vehicle
speaker is maintained.
Furthermore, in order to stabilize the microphone mounting attitude of the directional
microphone microphone 7, the rotary shaft 10 is shifted upward in parallel upward from one
horizontal horizontal axis passing through the center of the microphone housing 8. It is provided
on one horizontal axis in the horizontal direction (FIGS. 2 and 3), and the distance to the weight
14 is obtained.
[0021]
The weight 14 for setting the directional microphone microphone 7 to a low center of gravity is
attached to the outer bottom surface of the microphone case 8 in addition to being provided in a
state housed inside the microphone case 8 as shown in FIGS. It can be provided in a state of
being buried or in a state of being buried in the bottom wall of the resin microphone housing 8.
In addition, the bottom wall itself of the microphone housing 8 may be formed by a weight 14, or
the microphone housing 8 may be configured as a pair of upper and lower two pieces, and the
lower housing itself may function as the weight 14.
03-05-2019
6
[0022]
As described above, the on-vehicle microphone device according to the embodiment of the
present invention rotatably mounts the directional microphone 7 on the microphone attachment
portion 6 provided at the tip of the sun visor 1, and the front surface of the directional
microphone 7. The directional microphone 7 is provided with a weight 14 so that the speaker 8a
always faces the speaker in the passenger compartment regardless of the angle of the sun visor
1.
[0023]
In the on-vehicle microphone device as the embodiment of the present invention configured as
described above, when the sun visor 1 is lowered to the windshield 3 side in a situation such as
when the sun is dazzling, the sun visor 1 has the 2, while the directional microphone 7 rotates in
the counterclockwise direction of FIG. 2 with respect to the sun visor 1 with respect to the sun
visor 1 in response to the rotation of the sun visor 1. The front face 8a of 7 is located in a
substantially vertical plane, and maintains the microphone attachment posture facing the speaker
in the vehicle cabin.
Conversely, when the sun visor 1 is raised to the ceiling 2 side, the sun visor 1 rotates in the
counterclockwise direction of FIG. 2 about the shaft 5, but the directional microphone 7 is
rotated in accordance with the rotation of the sun visor 1. While rotating in the clockwise
direction of FIG. 2 about both rotation axes 10 with respect to the sun visor 1, the microphone
mounting posture in which the front surface 8a of the directional microphone 7 is positioned in a
substantially vertical plane and faces the vehicle interior speaker .
[0024]
Thereby, the directional microphone 7 can maintain the direction of the directivity 7a in a fixed
direction, that is, the direction of the in-room speaker regardless of the angle of the sun visor 1,
and the voice of the in-room speaker is stable. You can pick it up.
[0025]
In addition, this in-vehicle microphone device rotates the directional microphone 7 according to a
change in the angle of the sun visor 1, for example, so that the front surface 8a of the directional
microphone 7 always faces the speaker in the vehicle cabin. A microphone angle adjustment
03-05-2019
7
mechanism or the like for adjusting the angle of the lens is unnecessary, and the configuration is
simple and can be easily incorporated into the sun visor 1.
[0026]
In addition, this in-car microphone device connects the cable core 13 drawn out into the sun
visor 1 through the rotation axis 10 of the directional microphone 7 to, for example, a short
distance wireless communication module incorporated in the sun visor 1, Voice can be input to
the navigation device, and voice can be input to a mobile device such as a mobile phone or a
tablet terminal.
[0027]
1 sun visor 6 microphone attachment 7 directional microphone 8a front 14 weight
03-05-2019
8
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