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JP2017047825

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DESCRIPTION JP2017047825
Abstract: To provide a vehicle speaker device capable of generating high quality and wide
directivity sound with a simple configuration. A vehicle speaker device (2A) is attached to roof
frames (40-3, 40-6) constituting a cabin, which is an occupant space 4 of a vehicle (C), and roof
frames (40-3, 40-6). A roof frame 40-3, 40-6 is vibrated to generate a sound in the roof frame
40-3, 40-6 by generating a vibration, and the roof frame 40 is provided with the vibrator 50-1,
50-2. -3 and 40-6 are closed by the first surface on the vehicle interior side, the second surface
outside the vehicle compartment, and the third and fourth surfaces connecting the ends of the
first surface and the second surface. The vibrators 50-1 and 50-2 are attached to any one of the
first surface, the second surface, the third surface and the fourth surface. [Selected figure] Figure
2
Speaker apparatus for vehicle and conversation assistance system for vehicle
[0001]
The present invention relates to a speaker device for a vehicle and a conversation assistance
system for a vehicle.
[0002]
As a vehicle speaker device, Patent Document 1 describes that the speaker device is attached to
the ceiling of the rear seat of the vehicle in order to secure a luggage space.
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Further, Patent Document 2 describes that a vibration device is attached to an interior material of
a vehicle, and the interior material is vibrated as a diaphragm to generate sound.
[0003]
Japanese Utility Model Laid-Open Publication No. 5-003041 Japanese Laid-Open Patent
Publication No. 2005-014793
[0004]
In the technology described in Patent Document 1, in order to widen the directivity of the sound
generated by the speaker device, it is necessary to attach a plurality of speaker devices to the
ceiling.
Further, with the technology described in Patent Document 2, high quality sound can not be
generated because the interior material is soft, and the quality of the generated sound may be
further degraded due to deformation of the interior material, etc. is there.
[0005]
The present invention has been made in view of the above-mentioned point, and provides a
vehicle speaker device and a vehicle conversation assistance system capable of generating high
quality and wide directivity sound with a simple configuration. As an issue.
[0006]
In order to solve the above-described problems, the vehicle speaker device of the present
invention is attached to a vehicle body frame that constitutes a cabin, which is an occupant space
of the vehicle, and the vehicle body frame, and generates the vibration to generate the vehicle
body. A vibrator that vibrates the frame to generate a sound in the vehicle body frame, the
vehicle body frame includes a first surface on the vehicle interior side, a second surface on the
vehicle exterior side, the first surface, and the first surface; A closed cross-section is constituted
by the third surface and the fourth surface connecting the end portions of the two surfaces, and
the vibrator comprises the first surface, the second surface, the third surface and the fourth
surface. It is characterized in that it is attached to any of.
[0007]
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According to this configuration, since the vehicle body frame is vibrated as a diaphragm to
generate sound, the vibration (sound) propagates into the closed cross section of the vehicle
body frame and is efficiently amplified, and has high quality and wide directivity. Sound can be
generated with a simple configuration and provided to the occupant.
[0008]
The vibrator may be attached to the first surface.
[0009]
According to this configuration, since the vibrator is attached to the first surface, the sound
generated on the first surface is reflected on the second surface, and the generated sound can be
efficiently transmitted to the entire occupant space. .
[0010]
The vibrator may be attached to the widest surface among the first surface, the third surface, and
the fourth surface.
[0011]
According to such a configuration, the vibrator is attached to the surface having the largest area
among the first surface, the third surface, and the fourth surface, so that vibration, that is, sound
is efficiently transmitted and sound can be improved. Can.
[0012]
The first surface may be wider than the third surface and the fourth surface, and the vibrator
may be attached to the first surface.
[0013]
According to such a configuration, the vibrator is attached to the surface having the largest area
among the first surface, the third surface, and the fourth surface, so that vibration, that is, sound
is efficiently transmitted and sound can be improved. Since the vibrator is attached to the first
surface, the sound generated on the first surface is reflected on the second surface, and the
generated sound can be efficiently transmitted to the entire occupant space.
[0014]
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The vibrator is attached to the first surface, and the third surface and the fourth surface are
configured to be inclined surfaces that are separated from each other as going from the first
surface to the second surface. It may be.
[0015]
According to this configuration, the sound generated at the first surface is reflected at the second
surface and made smaller at the incident angle when it enters the third surface or the fourth
surface, and the generated sound is made more efficient at the third surface and the fourth
surface Can be transmitted.
[0016]
The vibrator may be attached outside the closed cross section of the vehicle body frame.
[0017]
According to this configuration, the assembly work of the vibrator can be simplified, and the
vibration (sound) is propagated into the closed cross section of the vehicle body frame to be
amplified efficiently, and the sound having high quality and wide directivity can be obtained. It
can be generated and provided to the occupant with a simple configuration.
[0018]
The vehicle body frame may be configured by combining a roof panel at an upper portion of the
vehicle body that constitutes the second surface, and a roof arch that constitutes the first surface,
the third surface, and the fourth surface. .
[0019]
According to such a configuration, since the vibrator is attached to the vehicle body frame
including the roof panel and the roof arch, that is, the roof frame, the sound can be generated at
a position close to the occupant's ear and the sound can be heard well.
[0020]
Further, the conversation assistance system for a vehicle according to the present invention
includes the above-described speaker device for a vehicle and a sound collecting device provided
at a middle portion in the vehicle width direction of the front end of the roof panel; It is
configured to pick up sound in two directions of the rear, one end in the vehicle width direction
and the rear and the other end in the vehicle width direction, and the vibrator is disposed at a
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position overlapping with the sound collecting device in the front and rear direction. It arrange |
positions and it is characterized by generating the sound collected by the said sound collection
apparatus on the said vehicle body frame.
[0021]
According to this configuration, it is possible to make it easy to collect the voices of the
occupants of the driver's seat and the front passenger seat, which are the front seats, and to
make it difficult to collect the sound at the rear of the occupant space. As a result, the voice of
the passenger in the front of the passenger space can be suitably transmitted to the passenger in
the middle and the rear of the passenger space.
[0022]
The vehicle is disposed at the vehicle width direction both end portions of the roof panel at the
rear of the pair of center pillars and the pair of center pillars disposed at the vehicle width
direction both end portions of the roof panel in the longitudinal direction middle portion. The
vehicle speaker device is provided with a pair of rear pillars, and the vehicle speaker device
includes, as the roof arch, a center roof arch extended in the vehicle width direction between the
pair of center pillars, and a vehicle width between the pair of rear pillars. A rear roof arch
extending in a direction may be provided, and the vibrator may be configured to be attached to
the center roof arch and the rear roof arch, respectively.
[0023]
According to this configuration, since the vibrator is attached to each of the center roof arch and
the rear roof arch, the entire passenger space (in particular, the middle seat and the rear) can be
obtained even if the vehicle has a long front and rear length such as a minivan. Sound can be
suitably diffused in the vicinity of the seat).
[0024]
According to the present invention, it is possible to generate sound with high quality and wide
directivity with a simple configuration.
[0025]
BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the vehicle body structure
of the vehicle to which the conversation assistance system for vehicles which concerns on 1st
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embodiment of this invention is applied.
FIG. 1 is a side view showing a vehicle body structure of a vehicle to which a conversation
assistance system for a vehicle according to a first embodiment of the present invention is
applied.
(A) is a perspective view which shows a roof arch, (b) is sectional drawing which shows typically
the roof frame to which the vibrator | oscillator was attached, ie, the speaker apparatus for
vehicles.
It is a figure which shows the speaker apparatus for vehicles which concerns on 2nd embodiment
of this invention, Comprising: (a), (b) is sectional drawing which shows typically the roof frame to
which the vibrator | oscillator was attached.
[0026]
An embodiment of the present invention will be described in detail with reference to the
drawings, taking as an example the case where the conversation assistance system for a vehicle
of the present invention is applied to a vehicle having three rows of seats (so-called minivans).
In the description, the same elements will be denoted by the same reference signs and redundant
description will be omitted.
Note that "front and rear" indicated by arrows in each figure indicates the longitudinal direction
of the vehicle body, "upper and lower" indicates the vertical direction of the vehicle, and "left and
right" indicates the lateral direction (vehicle width direction) viewed from the driver's seat Is
shown.
[0027]
First Embodiment As shown in FIGS. 1 and 2, a vehicle C to which a vehicle conversation
assistance system 1A according to a first embodiment of the present invention is applied has a
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passenger compartment 4 as a passenger compartment. Of the left and right front pillars 11, the
center pillars 12, the rear pillars 13, the roof side rails 14, the roof panel 20, and a plurality of
(six in this embodiment) roofs. Arch 30 (30-1, 30-2, 30-3, 30-4, 30-5, 30-6).
The roof panel 20 and the roof arch 30 constitute a roof frame 40 which is a kind of iron body
frame by being assembled to each other.
In addition, the roof panel 20 is abbreviate | omitted in FIG.
[0028]
The interior space behind the front pillar 11 of the vehicle body 3 has three rows of seats in
which the occupant can sit, that is, an occupant space provided with a front seat (driver's seat
and passenger seat) 5, a middle seat 6, and a rear seat 7. (Ie, the cabin) is four.
[0029]
<Various pillars and roof side rails> The front pillar 11 is a vehicle body frame that exhibits a
closed cross-sectional shape in an axial view, and is located on the left and right ends of the front
end of the occupant space 4 (ie, forward of the front seat 5). It is extended so as to extend
backward as you head.
A front window glass (not shown) is provided between the pair of left and right front pillars 11.
[0030]
The center pillar 12 is a vehicle body frame that exhibits a closed cross-sectional shape in an
axial view, and in the vertical direction at the left and right ends (that is, side or slightly behind
the back of the front seat 5) It is extended to
Between the front pillar 11 and the center pillar 12, a side door (not shown) for a passenger who
gets on the front seat 5 is provided.
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[0031]
The rear pillar 13 is a vehicle body frame having a closed cross-sectional shape in an axial view,
and extends in the vertical direction at the left and right ends of the rear end portion of the
occupant space 4 (that is, the side of the rear portion of the middle seat 6 or slightly behind) It is
set up.
Between the rear pillar 13 and the center pillar 12, there are provided side doors (not shown) for
occupants who get on the middle seat 6 and the rear seat 7.
[0032]
That is, the front pillar 11 constitutes a part of the front side of the frame having an opening to
which the side door for the front seat 5 is attached.
Further, the center pillar 12 constitutes the rear side of the frame having an opening to which
the side door for the front seat 5 is attached, and has an opening to which the side door for the
middle seat 6 and the rear seat 7 is attached. It constitutes the front edge of the frame.
The rear pillar 13 constitutes a part of the rear side of a frame having an opening to which the
side doors for the middle seat 6 and the rear seat 7 are attached.
[0033]
The roof side rail 14 is a vehicle body frame having a closed cross-sectional shape in an axial
view, and is bridged to the upper end portions of the front pillar 11, the center pillar 12, and the
rear pillar 13.
The roof side rail 14 constitutes an upper side of a frame having an opening to which the side
door for the front seat 5 is attached, and a frame having an opening to which the side doors for
the middle seat 6 and the rear seat 7 are attached. It constitutes the upper side.
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[0034]
The front pillar 11, the center pillar 12, the rear pillar 13 and the roof side rail 14 respectively
weld the inner panel on the vehicle interior side (the passenger space 4 side) and the outer panel
on the vehicle exterior side (the vehicle exterior). It is formed by joining.
[0035]
<Roof Panel> The roof panel 20 closes a rectangular frame formed by a pair of left and right roof
side rails 14 extending in the front-rear direction and roof arches 30 (30-1, 30-6) provided at the
front and rear ends thereof. It is a plate-like member which constitutes the roof of crew space 4
by being provided like.
[0036]
<Roof Arch> The roof arch 30 (30-1 to 30-6) is joined to the lower surface of the roof panel 20
and is constructed between a pair of left and right roof side rails 14.
The first roof arch 30-1 from the front is a so-called front roof arch that is bridged between the
upper end portions of the pair of left and right front pillars 11.
The third roof arch 30-3 from the front is a so-called center roof arch bridged between the upper
end portions of the pair of left and right center pillars 12.
The sixth (last) roof arch 30-6 from the front is a so-called rear roof arch that is bridged between
the upper end portions of the pair of left and right rear pillars 13.
[0037]
As shown in FIGS. 3A and 3B, the roof arch 30 has a bottom wall 31, a front wall 32 extending
upward from the front end of the bottom wall 31, and a rear of the bottom wall 32. A rear wall
33 extending upward from the end, a flange 34 extending forward from the upper end of the
front wall 32, and a flange extending rearward from the upper end of the rear wall 33 And 35
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are integrally provided.
The roof arch 30 can be formed by bending a long plate member.
[0038]
<Roof frame> As shown in FIG. 3B, the roof arch 30 reinforces the roof panel 30 by joining the
flanges 34 and 35 to the lower surface of the roof panel 30 by welding or the like. The roof
frame 40 (40-1, 40-2, 40-3, 40-4, 40-5, 40-6), which is a type of vehicle body frame constituting
the passenger space 4 of the vehicle C in cooperation with Do.
The roof frame 40 has a first surface consisting of the bottom wall 31 of the roof arch 30, a
second surface consisting of a part of the roof panel 20, a third surface consisting of the front
wall 32 of the roof arch 30, and a roof arch The fourth surface, which is the rear wall 33, forms a
closed cross section in a rectangular shape in a side view.
[0039]
In the present embodiment, the roof frame 40 has a first surface formed of the bottom wall 31
and a second surface formed of a part of the roof panel 20 in a side view, and the second surface
formed of the bottom wall 31 The second surface formed of the roof panel 20 has a substantially
trapezoidal shape longer than one surface.
That is, an angle θ 1 formed by the bottom wall portion (first surface) 31 and the front wall
portion (third surface) 32, and the bottom wall portion (first surface) 31 and the rear wall portion
(fourth surface) 33 The angle θ 2 formed by each is an obtuse angle larger than 90 degrees and
smaller than 180 degrees.
Further, an angle θ 3 formed by the front wall portion (third surface) 32 and a portion (second
surface) of the roof panel 40, and a portion (fourth surface) of the rear wall portion (fourth
surface) 33 and the roof panel 40 The angles θ 4 formed by the two surfaces) are acute angles
less than 90 degrees.
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Therefore, the front wall portion 32 and the rear wall portion 33 are inclined surfaces which are
separated from each other as they go upward, and the distance between them increases.
This is because the sound generated by vibrating the bottom wall portion 31 (first surface) of the
vibrator 50 described later is reflected by the roof panel 20 (second surface) and the front wall
portion (third surface) 32 or the rear In order to reduce the incident angle α when entering the
wall portion (fourth surface) 33 and efficiently transmit the generated sound to the front wall
portion (third surface) 32 and the rear wall portion (fourth surface) 33 is there.
The incident angle α is smaller than in the case where the third surface and the fourth surface
are parallel to each other and the roof frame has a substantially square shape or a substantially
rectangular shape in a side view.
[0040]
In the present embodiment, the length L 1 of the bottom wall 31 is longer than the lengths L 2
and L 3 of the front wall 32 and the rear wall 33 in a side view. That is, the first surface formed
of the bottom wall portion 31 exhibits an area larger than that of the third surface formed of the
front wall portion 32 and the fourth surface formed of the rear wall portion 33. Here, the rigidity
of the respective surfaces of the roof frame 40 decreases as the area (that is, the length in a side
view) increases, and the vibration is easily transmitted to the surfaces. Therefore, the vehicle
conversation assistance system 1A has the bottom wall 31 that exhibits the largest area among
the bottom wall (first surface) 31, the front wall (third surface) 32, and the rear wall (fourth
surface) 33. By attaching the vibrator 50 described later, it is possible to efficiently transmit
vibration or sound and to improve the sound of the sound.
[0041]
<Vehicle Conversation Assistance System> As shown in FIGS. 1 and 2, the vehicle conversation
assistance system 1A according to the first embodiment of the present invention sits in the front
seat 5 (driver's seat and passenger seat) of the vehicle C. This system assists the conversation
between the occupants by suitably transmitting the voices of the occupants to the occupants
sitting in the middle seat 6 and the rear seat 7. The vehicle conversation support system 1A
includes a vehicle speaker device 2A, a sound collection device 60, and a control device (not
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shown) that causes the vehicle speaker device 2A to generate a sound collected by the sound
collection device 60.
[0042]
<Speaker Device for Vehicle> The speaker device 2A for vehicle includes the center roof frame
40-3 and the rear roof frame 40-6, and the transducers 50 (50-1, 50-2).
[0043]
As described above, the center roof frame 40-3 is a vehicle body frame configured by the roof
panel 20 and the center roof arch 30-3 bridged between the upper end portions of the pair of
left and right center pillars 12, and for a vehicle It is used as a diaphragm of the speaker device
2A.
[0044]
As described above, the rear roof frame 40-6 is a vehicle body frame configured by the roof
panel 20 and the rear roof arch 30-6 installed between the upper end portions of the pair of left
and right center pillars 12, and for a vehicle It is used as a diaphragm of the speaker device 2A.
[0045]
The rear frames 40-3 and 40-6 are harder and thinner than the roof lining 8, and easily generate
high-quality sound, that is, vibration.
[0046]
Vibrator The vibrator 50 is attached to the roof frame 40, and is a vibration source that vibrates
the roof frame 40 as a diaphragm by generating vibration to generate sound in the roof frame
40.
As the vibrator 50, a giant magnetostrictive exciter or the like can be used.
The vibrator 50 is set so that the direction perpendicular to the mounting surface of the roof
frame 40 is the vibration direction.
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[0047]
In the present embodiment, the vibrator 50 is attached to the center of the roof frame 40 in the
vehicle width direction.
This is because the rigidity of the roof panel 20 at the center in the vehicle width direction is low,
and the roof panel 20 is easily vibrated to improve the transmission performance of the
generated sound.
[0048]
As shown in FIG. 3B, the vibrator 50-1 is attached to the lower surface of the bottom wall portion
(first surface) 31 of the center roof frame 40-3, that is, outside the closed cross section. 3 (in
particular, the bottom wall 31 which is the mounting surface) is vibrated as a diaphragm to
generate a sound.
[0049]
The vibrator 50-2 is attached to the lower surface of the bottom wall 31 (first surface) of the rear
roof frame 40-6, that is, outside the closed cross section, and the rear roof frame 40-6 (in
particular, the bottom wall which is a mounting surface). 31) vibrate as a diaphragm to generate
sound.
[0050]
In the vehicle speaker device 2A, the vibration direction of the vibrators 50-1 and 50-2 is the
vertical direction, so that the sound generated at the bottom wall portion 31 can be efficiently
transmitted to the roof panel 20.
[0051]
The vibrators 50-1 and 50-2 are provided at middle portions in the vehicle width direction of the
respective roof frames 40-3 and 40-6, more specifically, at positions overlapping in the front and
rear direction with the sound collecting device 60 described later. There is.
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In other words, the sound collector 60 and the transducers 50-1 and 50-2 are on the same
straight line extending in the front-rear direction in plan view, and in the present embodiment, in
the present embodiment, the vehicle width direction passing through the center of the vehicle C
in the vehicle width direction in plan view The vibrators 50-1 and 50-2 are arranged on the
center line Y, and the installation locations of the transducers 50-1 and 50-2 are out of the sound
collection ranges X1 and X2 (see FIGS. 1 and 2) of the sound collection device 60 described later.
[0052]
The lower surface of the assembly in which the roof panel 20, the roof arch 30, and the vibrator
50 are assembled to each other is covered with a roof lining 8 (see FIG. 3B) which is an interior
material.
[0053]
<Sound Collection Device> As shown in FIG. 1 and FIG. 2, the sound collection device 60 is
provided at the middle portion in the vehicle width direction of the front end of the roof panel 20
and the speech of the occupant sitting in the front seat 5 is Collect sound.
In the present embodiment, the sound collecting device 60 is attached to the lower surface of the
roof lining 8 (see FIG. 3B) covering the lower surface of the roof panel 20.
The sound collection device 60 is configured to collect sound in two directions, that is, an
obliquely lower side on the rear side and one end side in the vehicle width direction and an
oblique lower side on the rear side and the other side in the vehicle width direction.
That is, the sound collection device 60 includes two microphones (not shown), and the sound
collection range X1 of one microphone covers one front seat (driver's seat) 4 and the sound
collection range of the other microphone X2 covers the other front seat (passenger seat) 4.
[0054]
In the vehicle speech assistance system 1A, the sound collection device 60 collects a sound such
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as the conversation of the occupant sitting in the front seat 4, generates an audio signal based on
the collected sound, and generates the generated audio signal. Is output to a control device (not
shown).
The control device acquires the audio signal output from the sound collection device 60, and
outputs the acquired audio signal to the transducers 50-1 and 50-2. The transducers 50-1 and
50-2 acquire audio signals output from the control device, generate vibrations based on the
acquired audio signals, and are attachment surfaces of the roof frames 40-3 and 40-6. The
bottom wall 31 is vibrated as a diaphragm to generate a sound (such as the above-described
conversation of the occupant) on the bottom wall 31. The sound generated in this manner is
transmitted to the closed cross section of each of the roof frames 40-3 and 40-6 to the occupants
sitting in the middle seat 6 and the rear seat 7 as a sound with a spread that is efficiently
amplified. Provided.
[0055]
The vehicle conversation support system 1A according to the first embodiment of the present
invention vibrates the roof frame 40, which is a hard and thin vehicle body frame, as a
diaphragm to generate a sound, so the vibration (sound) of the roof frame 40 is generated. By
propagating in the closed cross section and amplifying efficiently, high quality and wide
directivity sound can be generated with a simple configuration and provided to the occupant.
That is, in the vehicle speaker device 2A, since the roof frames 40-3 and 40-6 are harder and
thinner than the roof lining 8, they are suitably vibrated as a diaphragm of the vehicle speaker
device 2A to produce high quality sound. Can occur. Further, in the vehicle speaker device 2A,
since the roof frames 40-3 and 40-6 are extended over the entire vehicle width direction of the
occupant space 4, it is possible to generate a sound having a spread in the occupant space 4 .
Moreover, since the conversation assistance system 1A for vehicles does not need to prepare a
diaphragm separately and uses the small and thin vibrator 50, the freedom degree of layout is
high and weight reduction can be realized.
[0056]
Further, in the vehicle conversation aid system 1A, since the vibrator 50 is attached to the
bottom wall (first surface) 31 of the roof frame 40, the sound generated at the bottom wall (first
surface) 31 is the roof panel As a result, the generated sound can be efficiently transmitted to the
entire occupant space 4.
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[0057]
In addition, conversation assistance system 1A for the vehicle has the largest area among the
bottom wall (first surface) 31, front wall (third surface) 32, and rear wall (fourth surface) 33 (this
embodiment) Then, since the vibrator 50 is attached to the first surface, the vibration, that is, the
sound can be efficiently transmitted, and the sound can be heard better.
[0058]
In the vehicle conversation aid system 1A, the vibrator 50 is attached to the bottom wall (first
surface) 31 of the roof frame 40 and the front wall (third surface) 32 and the rear wall (fourth
surface) ) 33 is formed on the inclined surfaces which are separated from each other as it goes
from the bottom wall portion (first surface) 31 to the roof panel (second surface) 20, the sound
generated at the bottom wall portion (first surface) 31 The incident angle α when the light is
reflected by the roof panel (second surface) 20 and is incident on the front wall portion (third
surface) 32 or the rear wall portion (fourth surface) 33 is reduced, and the generated sound is
Third surface) 32 and the rear wall (fourth surface) 33 can be efficiently transmitted.
[0059]
Further, in the vehicle conversation aid system 1A, the vibrator 50 is the roof frame 40 (more
specifically, any one of the first surface, the third surface and the fourth surface of the roof arch
30, in the present embodiment, the first surface) Since the assembly work of the vibrator 50 can
be simplified and vibration (sound) is propagated into the closed cross section of the vehicle
body frame and amplified efficiently, high quality can be achieved. Sound with wide directivity
can be generated with a simple configuration and provided to the occupant.
[0060]
Further, since the vibrator 50 is attached to the roof frame 40 consisting of the roof panel 20
and the roof arch 30, the vehicle speech aid system 1A generates a sound at a position close to
the occupant's ear, and the sound can be heard well. can do.
[0061]
In addition, the vehicle conversation assistance system 1A collects sound in two directions, that
is, obliquely downward where the sound collecting device 60 is backward and one end in the
vehicle width direction and obliquely downward which is the rear and other end in the vehicle
width direction. Therefore, it is possible to make it easy to collect the voices of the occupants of
the driver's seat and the front passenger's seat, which are the front seats 4, and to make it
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difficult to collect the sound at the rear of the occupant space 4, noise mixing, echo, howling, etc.
It can prevent suitably.
Furthermore, since the conversational system 1A for a vehicle is provided at a position where the
vibrator 50 deviates from the sound collection range X1, X2 of the sound collection device 60,
echo and howling can be more preferably prevented.
Furthermore, even if the vehicle speech assistance system 1A is playing music with another
speaker device or road noise is large, the voice of the passenger in the front of the passenger
space 4 can be used for the middle part and the rear part of the passenger space 4 It can be
suitably communicated to the occupants.
[0062]
Moreover, since the vibrator | oscillator 50 is attached to each of the center roof arch 40-3 and
the rear roof arch 40-6, the conversation assistance system 1A for vehicles is the vehicle C with
long front-back length of the vehicle body 3, such as a minivan. However, it is possible to suitably
diffuse the sound in the entire passenger space 4 (especially, in the vicinity of the middle seat 6
and the rear seat 7), and to realize a realism like a concert hall that wraps the entire passenger
space 4.
[0063]
Second Embodiment Next, a vehicle conversation assistance system according to a second
embodiment of the present invention will be described focusing on differences from the vehicle
conversation assistance system 1A according to the first embodiment.
[0064]
As shown in FIG. 4, the conversation assistance system 1B for vehicles which concerns on 2nd
embodiment of this invention is replaced with the speaker apparatus 2A for vehicles, and is
provided with the speaker apparatus 2B for vehicles.
As shown to Fig.4 (a), it replaces with the vibrator 50-1 attached to the bottom wall part 31 of
the center roof arch 30-3, and the speaker apparatus 2B for vehicles is a rear wall of the center
roof arch 30-3. The vibrator 50-3 attached to the outside of the closed cross section of the
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portion 33, and instead of the vibrator 50-1 attached to the bottom wall portion 31 of the rear
roof arch 30-6, The vibrator 50-4 attached to the outside of the closed cross section of the rear
wall portion 33 is provided.
[0065]
In the vehicle speaker device 2B, the vibration directions of the vibrators 50-3 and 50-4 are
substantially in the front-rear direction.
Moreover, since the transducers 50-1 and 50-2 are attached outside the closed cross section of
the rear wall 33 instead of the bottom wall 31, especially when the clearance between the roof
panel 20 and the roof lining 8 is very small, The present invention is also applicable to the case
where the clearance between the bottom wall 31 of the roof arches 30-3 and 30-6 and the roof
lining 8 is smaller than the thickness of the vibrator 50.
[0066]
As shown in FIG. 4B, the vibrators 50-3 and 50-4 are located outside the closed cross section of
the front wall 32 instead of the rear wall 33 of each rear roof arch 30-3 and 30-6. It may be
configured to be attached.
[0067]
The vehicle conversation support system 1B according to the second embodiment of the present
invention can generate sound with high quality and wide directivity with a simple configuration
and provide it to the occupant, and the roof panel 20 and the roof lining It is applicable also
when the clearance with 8 is very small.
[0068]
As mentioned above, although embodiment of this invention was described, this invention is not
limited to the said embodiment, It can change suitably in the range which does not deviate from
the summary of this invention.
For example, the vibrator 50 may be configured to be attached within the closed cross section of
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the first, second, third and fourth surfaces of the roof arch 30.
In this case, the vibrator 50 can be protected from impact or the like.
The vehicle speaker devices 2A and 2B of the present invention are also applicable to vehicle
body frames (the center pillar 12, the rear pillar 13, the roof side rail 14 and the like) other than
the roof panel 40.
In addition, the vehicle conversation assistance system 1A, 1B of the present invention is
applicable to a vehicle in which the rear seat 7 is omitted and the space behind the middle seat 6
is a storage space capable of storing articles etc. .
Further, the vehicle speaker devices 2A and 2B of the present invention can also be used as
speaker devices for music and the like, not for assisting in conversation. In this case, it is possible
to realize the realism like a concert hall. Further, in the vehicle conversation support system 1A,
1B of the present invention, the sound collection device 60 may be configured to separately
include two microphones. In this case, the two microphones are provided in line symmetry with
respect to the vehicle width direction center line Y.
[0069]
1A, 1B Conversational aid system for vehicle 2A, 2B Speaker device for vehicle 3 Car body 4
Passenger space (car room) 5 Front seat 6 Middle seat 7 Rear seat 8 Roof lining 12 Center pillar
13 Rear pillar 14 Roof side rail 20 Roof panel Two sides) 30 (30-1 to 30-6) Roof arch 30-3
Center roof arch 30-6 Rear roof arch 31 Bottom wall (first surface) 32 Front wall (third surface)
33 Rear wall ( Fourth surface) 40 (40-1 to 40-6) Roof frame (body frame) 50 (50-1 to 50-6)
Vibrator 60 Sound collector C Vehicle X1, X2 Sound collection range
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