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DESCRIPTION JPH0629765

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DESCRIPTION JPH0629765
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
acoustic control device for a vehicle, and in particular to reduce the volume of an acoustic device
mounted on a vehicle when an opening or closing member such as a door or window is opened.
The present invention relates to a vehicle acoustic control device.
[0002]
2. Description of the Related Art In the case of paying a fee at a toll of a toll road while traveling
while operating an acoustic device, the window is lowered and the acoustic device is easily
exchanged in order to easily communicate with the staff of the toll booth. It was necessary to
lower the volume of and then raise the volume again after paying the charge.
[0003]
In order to reduce the time and effort of operating such a driving vehicle, according to Japanese
Utility Model Laid-Open Publication No. 62-80255, when the window is opened, the sound
volume of the audio equipment is reduced by a predetermined amount by the operation of the
switching means. After that, there has been proposed a volume control device for vehiclemounted audio equipment provided with operation control means for canceling the reduction of
the volume of the audio equipment when the window is closed.
[0004]
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However, in the above-mentioned prior art, for example, even when the window is opened while
the vehicle is traveling, the volume of the acoustic device is reduced, which is not preferable for
the vehicle occupants. A condition occurs.
Therefore, there is a problem that the sound volume is reduced more than necessary even if it is
not necessary to originally reduce the sound volume of the audio device.
[0005]
Therefore, the present invention has been made to solve the problems of the prior art, and
provides an acoustic control device for a vehicle that can appropriately adjust the volume of the
acoustic device without reducing the volume more than necessary. The purpose is to
[0006]
SUMMARY OF THE INVENTION In order to achieve the above object, according to the present
invention, an open state detection means for detecting an open state of a vehicle opening /
closing body and a detection means for detecting the open state of the opening / closing body
And control means for reducing the volume of the audio equipment mounted on the vehicle, and
prohibition means for prohibiting reduction of the sound volume of the audio equipment by the
control means when a predetermined condition is input to the control means. There is.
[0007]
In the present invention configured as described above, the volume of the audio device can be
appropriately adjusted without the volume being reduced more than necessary in the case where
it is not necessary to originally reduce the volume of the audio device.
In the present invention, the predetermined condition may be a case where the vehicle speed is
equal to or more than a predetermined value.
With this configuration, the volume of the audio device is not reduced even when the open /
close member is in the open state while the vehicle is traveling at the predetermined value or
more.
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2
[0008]
Furthermore, in the present invention, the predetermined condition may be when the headlight
of the vehicle is off.
With this configuration, the volume of the audio device is reduced even when the opening /
closing member is in the open state when the headlight is off, that is, when the vehicle is
traveling in the daytime. There is no
[0009]
Further, according to the present invention, in an acoustic control device for a vehicle of a vehicle
including a plurality of open / close members and a plurality of speakers disposed corresponding
to the open / close members, an open state for detecting the open state of the open / close
members When the state detecting means, the control means for reducing the volume of the
audio equipment when the open state detecting means detects the open state of the open / close
body, and only a part of the plurality of open / close bodies is open And means for selectively
inhibiting reduction of the volume of the speaker corresponding to the open / close member in
the closed state.
[0010]
In the present invention configured as described above, the sound volume of the audio
equipment is reduced when the open / close member is in the open state, and the sound volume
of the speaker corresponding to the open / close member in the closed state is not reduced. ing.
Therefore, while being able to reduce the sound volume of the audio equipment which leaks out
of a vehicle, the sound volume required for a passenger | crew can be ensured.
[0011]
An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a whole block diagram which shows one Example of the acoustic control apparatus for
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3
vehicles of this invention. In FIG. 1, reference numeral 1 denotes an audio device main body, and
the audio device main body 1 includes an amplifier 2 and a control unit 3. A mute circuit 4 is
connected to the output side of the audio device body 1, and the mute circuit 4 is connected to
the speaker 6 via the switch circuit 5. Here, the mute circuit 4 has a function of lowering the
volume generated by the speaker 6 by a predetermined value by lowering the level of the audio
signal output from the audio device body 1 (mute). Further, based on the signal from the control
unit 3, the switch circuit 5 reduces the level of the acoustic signal to be output to the speaker 6
through the mute circuit 4 or directly outputs the signal to the speaker 6 without the mute
circuit 4. A switching circuit is shown in FIG. 1. FIG. 1 shows a normal case where the signal is
directly output to the speaker 6 without passing through the mute circuit 4. Reference numeral 7
is an indicator for indicating that the mute state is in effect.
[0012]
Signals from the mute switch 10, the auto mute switch 11, the vehicle speed sensor 12, the door
switch 13, the window switch 14, and the headlight switch 15 are input to the control unit 3.
Here, the mute switch 10 and the auto mute switch 11 are operated on / off by the driver. The
vehicle speed sensor 12 is a sensor for detecting the vehicle speed. Further, the door switch 13 is
a switch for outputting whether the door is in the open state or the closed state, and the window
switch 14 is a switch for outputting whether the window is in the open state or the closed state.
The light switch 15 is a switch that outputs whether the headlight is on or off.
[0013]
Next, control contents according to one embodiment of the vehicle acoustic control device of the
present invention will be described with reference to the flowchart shown in FIG. S in FIG. 2
indicates each step. First, in S1, it is determined whether the mute switch 10 is on or not. If it is
on, a signal to that effect is output to the switch circuit 5 in S2, and the level of the acoustic
signal output to the speaker 6 is the mute circuit 4 Reduced (muted).
[0014]
If the mute switch 10 is not on in S1, the process proceeds to S3 to determine whether the auto
mute switch 11 is on. If it is on, it is determined whether the headlight switch 15 is on in S4. It is
determined whether or not at least one of the door switch 13 and the window switch 14 is on at
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S5. When the headlight switch 15 is on and at least one of the door switch 13 and the window
switch 14 is on, the process proceeds to S6 and is muted.
[0015]
If the headlight switch 15 is not turned on in S4, and if at least one of the door switch 13 and the
window switch 14 is not turned on in S5, the process proceeds to S7 to determine whether the
mute state is set or not. If it is in the state, the mute state is canceled in S8. In the embodiment
shown in FIG. 2, the volume of the sound device 1 is reduced when the headlight switch 15 is on,
that is, when traveling at night and when either the door or the window is in the open state, Even
when either the door or the window is in the open state, the volume of the sound device 1 is not
reduced, that is, the mute is not performed during the daytime traveling. Therefore, when
traveling in the daytime, the necessary volume can be secured without the volume of the audio
device 1 being reduced. Furthermore, when the window is opened by paying a fee at the exit toll
booth of the expressway at night, the volume of the audio equipment is reduced, so the
interaction with the staff of the toll booth is made by the volume of the audio equipment. There is
no hindrance.
[0016]
Next, control contents according to another embodiment of the vehicle acoustic control device of
the present invention will be described with reference to the flowchart shown in FIG. The control
contents shown in FIG. 3 are the same as those shown in FIG. 2 except for S14. That is, in the one
shown in FIG. 2, it is determined in S4 whether the headlight switch 15 is on or not. In the one
shown in FIG. 3, it is instead determined in S14 whether the vehicle speed is zero or not. It is
judged.
[0017]
In the embodiment shown in FIG. 3, when the vehicle speed is zero, that is, when the vehicle is
stopped and either the door or the window is in the open state, the sound volume of the acoustic
device 1 is reduced. Even when any one of them is in the open state, the volume of the sound
device 1 is not reduced, that is, the mute is not performed when the vehicle is traveling.
Therefore, when the vehicle travels, the required volume can be secured without the volume of
the audio device 1 being reduced. Similarly, when the vehicle is stopped and the window is
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opened by paying a fee at the exit toll booth of the expressway, etc., the volume of the audio
equipment is reduced, so communication with the staff of the toll booth is required. It does not
interfere with the volume of the sound device.
[0018]
In this embodiment, although it is determined in S14 whether the vehicle speed is zero, it may be
determined whether the vehicle speed is 10 km / h or less, for example, within a predetermined
speed. Next, FIG. 4 is a whole block diagram which shows the other Example of the acoustic
control apparatus for vehicles of this invention. In FIG. 4, reference numeral 21 denotes an audio
device main body, and the audio device main body 21 includes an amplifier 22 and a control unit
33. A plurality of mute circuits 24 respectively corresponding to a plurality of speakers to be
described later are connected to the output side of the audio device main body 21, and the mute
circuits 24 are connected to the speakers 26 via the switch circuit 5. ing. Here, the speaker 26 is
a total of four speakers: a speaker 26a disposed at the front right of the vehicle, a speaker 26b
disposed at the front left, a speaker 26c disposed at the rear right, and a speaker 26d disposed at
the rear left It is composed of Here, based on the signal from the control unit 23, the switch
circuit 25 can reduce the level of the acoustic signal independently for each of the four speakers
via the corresponding mute circuit 24, as shown in FIG. Indicates that the front speakers 26a and
26b are muted respectively.
[0019]
The control unit 23 includes a mute switch 30, an auto mute switch 31, a door switch 32 for the
right front door, a door switch 33 for the left front door, a door switch 34 for the right rear door,
and a left rear door. A signal from the door switch 35 is input. Here, the four door switches 32 to
35 are switches for outputting whether each door is open or closed.
[0020]
Next, the control contents according to another embodiment of the present invention shown in
FIG. 4 will be described with reference to the flowchart shown in FIG. First, in S21, it is
determined whether the mute switch 30 is on or not. If it is on, a signal to that effect is output to
the switch circuit 25 in S22, and the level of the acoustic signal output to each of the speakers
26a to 26d is It is reduced (muted) by each mute circuit 24.
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[0021]
In S21, if the mute switch 30 is not on, the process proceeds to S23, it is determined whether the
auto mute switch 31 is on, and if it is on, the process proceeds to S24. In S24, it is determined
whether or not all the doors are in the open state. If the door is in the open state, all the speakers
26a to 26d are muted in S25. In S24, if all the doors are not in the open state, the process
proceeds to S26 and it is determined whether or not the front door is in the open state. If it is in
the open state, only the front speakers 26a and 26b are muted in S27. Ru. In S26, if the front
door is not in the open state, the process proceeds to S28, and it is determined whether the rear
door is in the open state. If it is in the open state, only the rear speakers 26c and 26d are muted
in S29. Ru. If all the doors are not open or closed, the process proceeds to S30. If the door is in
the mute state, the mute state is canceled in S31.
[0022]
In the embodiment shown in FIG. 5, when all the doors are open, all the speakers 26a to 26d are
muted, and when only the front door is open, only all the front speakers 26a and 26b are muted.
When the rear door is open, only the rear speakers 26c, 26d are muted. Therefore, according to
this embodiment, it is possible to reduce the volume of the sound device leaking to the outside of
the vehicle, and further, it is possible to secure the volume necessary for the passenger in the
vehicle.
[0023]
In the embodiment shown in FIG. 5, the open state of the left and right front doors and the open
state of the left and right rear doors are determined, and the front speakers 26a and 26b and the
rear speakers 26c and 26d are muted respectively. However, the open state may be determined
for each door, and only the speakers directed to, for example, the opened door may be muted
independently for each of the speakers 26a, 26b, 26c, and 26d.
[0024]
In the case where the window is slightly opened for ventilation, the open state may not be
established.
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[0025]
As described above, according to the present invention, the volume of the audio device is not
reduced more than necessary when the volume of the audio device is not required to be reduced,
and the volume of the audio device is properly adjusted. be able to.
Also, since the sound volume of the audio equipment is reduced when the opening / closing body
is in the open state, and the sound volume of the speaker corresponding to the opening / closing
body in the closed state is not reduced The volume of the vehicle can be reduced and the volume
required for the occupant can be secured.
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