JPH0629765A - Acoustic controller for vehicle - Google Patents

Abstract

PURPOSE:To perform proper adjustment without reducing the sound volume more than necessary by reducing the sound volume at the time of detecting the open state of a door or a window and inhibiting the reduction at the time of input of a prescribed condition. CONSTITUTION:A muting circuit 4 is connected to the output side of an acoustic apparatus main body 1, and a switch circuit 5 is switched based on the signal of a control unit 3 to reduce the level of sounds outputted to a speaker 6 through the muting circuit 4 or directly output them. Signals are inputted to the control unit 3 from a mute switch 10, a vehicle speed sensor 12, a door switch 13, a window switch 14, and a headlight switch 15. Consequently, the sound volume of the acoustic apparatus 1 is reduced when the vehicle is running at night and the door or the window is opened, but the sound volume is not reduced at the time of running in the daytime even when the door or the window is opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle acoustic control device, and more particularly to reducing the volume of an audio device mounted on a vehicle when an opening / closing body such as a door or a window is opened. The present invention relates to a vehicle acoustic control device.

[0002]

2. Description of the Related Art Conventionally, when paying a toll at a toll road toll while driving while operating an audio device, the window is lowered and the audio device is lowered in order to easily communicate with staff members at the toll gate. It was necessary to lower the volume of and raise the volume again after paying the fee.

In order to reduce the troublesome operation of the driving vehicle, Japanese Utility Model Laid-Open No. 62-80255 discloses that the volume of the audio equipment is set to a predetermined amount by operating the switching means when the window is opened. There is proposed a volume adjusting device for an on-vehicle audio equipment, which is provided with an operation control means for canceling the reduction of the volume of the audio equipment when the window is closed after that.

[0004]

However, in the above-mentioned conventional apparatus, even if the window is opened while the vehicle is traveling, the volume of the audio equipment is reduced, which is not preferable for the occupants of the vehicle. A condition occurs. Therefore, there is a problem that the volume is reduced more than necessary even if the volume of the audio device does not need to be reduced.

Therefore, the present invention has been made in order to solve the problems of the prior art, and it is possible to appropriately adjust the volume of an audio device without reducing the volume more than necessary. The purpose is to provide a device.

[0006]

To achieve the above object, the present invention provides an open state detecting means for detecting an open state of an opening / closing body of a vehicle, and an open state detecting means for detecting the open state of the open / close body. And a control means for reducing the volume of the audio device mounted on the vehicle, and a prohibiting means for inhibiting the control device from reducing the volume of the audio device when a predetermined condition is input to the control means. There is.

According to the present invention configured as described above, the volume of the audio equipment is not reduced more than necessary when the volume of the audio equipment is not originally reduced, and the volume of the audio equipment is appropriately adjusted. You can In the present invention, the predetermined condition may be that the vehicle speed is equal to or higher than a predetermined value. With this configuration, the volume of the audio device is not reduced while the vehicle is traveling at a predetermined value or higher, even when the opening / closing body is in the open state.

In the present invention, the above-mentioned predetermined condition is
It may be when the headlight of the vehicle is off. With this configuration, when the headlight is off, that is, when the vehicle is traveling in the daytime, the volume of the audio device is reduced even when the opening / closing body is in the open state. There is no.

Further, the present invention provides a vehicle acoustic control device for a vehicle, comprising an audio device having a plurality of opening / closing bodies and a plurality of speakers arranged corresponding to the opening / closing bodies,
Open state detection means for detecting the open state of the open / close body, control means for reducing the volume of the audio device when the open state detection means detects the open state of the open / close body, and only a part of the plurality of open / close bodies Is opened, a prohibition unit that selectively prohibits reduction of the volume of the speaker corresponding to the open / closed body in the closed state is provided.

In the present invention configured as described above, the volume of the audio device is reduced when the opening / closing body is opened, and the volume of the speaker corresponding to the opening / closing body in the closed state is reduced. I try not to. Therefore, the volume of the audio device leaking out of the vehicle can be reduced, and the volume necessary for the occupant can be secured.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of a vehicle acoustic control device of the invention. In FIG. 1, reference numeral 1 is an audio equipment main body, and the audio equipment 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 equipment body 1, and the mute circuit 4 is connected to a speaker 6 via a switch circuit 5. Here, the mute circuit 4 has a function of lowering (muting) the level of the audio signal output from the audio device body 1 to reduce the volume generated by the speaker 6 by a predetermined value. Further, the switch circuit 5 determines whether to reduce the level of the acoustic signal output to the speaker 6 via the mute circuit 4 or directly output to the speaker 6 without passing through the mute circuit 4, based on the signal from the control unit 3. This is a circuit for switching, and FIG. 1 shows a normal case of directly outputting to the speaker 6 without going through the mute circuit 4. Reference numeral 7 is an indicator for displaying the fact in the case of the mute state.

The control unit 3 includes a mute switch 10, an auto mute switch 11,
Signals from the vehicle speed sensor 12, the door switch 13, the window switch 14, and the headlight switch 15 are input. Here, the mute switch 10 and the auto mute switch 11 are turned on / off by the driver.
Off is operated. The vehicle speed sensor 12 is a sensor for detecting the vehicle speed. In addition, the door switch 1
3 is a switch that outputs whether the door is open or closed, a window switch 14 is a switch that outputs whether the window is open or closed, and the headlight switch 15 is It is a switch that outputs whether the headlight is on or off.

Next, referring to the flow chart shown in FIG. 2, the control contents by one embodiment of the vehicle acoustic control system of the present invention will be explained. S in FIG. 2 indicates each step. First, in S1, it is determined whether or not the mute switch 10 is on. 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 changed to the mute circuit 4. Is reduced (muted) by.

If the mute switch 10 is not turned on in S1, the process proceeds to S3 and the auto mute
It is determined whether the switch 11 is on, and if it is on,
In S4, it is determined whether or not the headlight switch 15 is on, and further in S5, it is determined whether or not at least one of the door switch 13 and the window switch 14 is on. If 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.

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, and it is determined whether or not it is in the mute state. If it is in the mute state, the mute state is released in S8. In the embodiment shown in FIG. 2, the volume of the audio device 1 is reduced when the headlight switch 15 is turned on, that is, when the vehicle is running at night and either the door or the window is opened. Even when either the door or the window is opened, the volume of the acoustic device 1 is not reduced, that is, the mute is not performed during the daytime traveling. Therefore, when traveling in the daytime, the required volume can be secured without reducing the volume of the audio device 1. In addition, when the window is opened at night by paying a fee at the exit toll gate of the highway, the volume of the audio equipment is reduced, so the interaction with the staff at the toll gate depends on the volume of the audio device. It does not interfere.

Next, the control contents of another embodiment of the vehicle acoustic control system of the present invention will be described with reference to the flow chart shown in FIG. The control content shown in FIG. 3 is the same as that shown in FIG. 2 except for S14. That is, in the one shown in FIG. 2, it is determined in S4 whether or not the headlight switch 15 is on, but in the one shown in FIG. 3, instead, in S14, it is determined whether or not the vehicle speed is zero. Making a decision.

In the embodiment shown in FIG. 3, the volume of the audio device 1 is reduced when the vehicle speed is zero, that is, when the vehicle is stopped and either the door or the window is opened. Alternatively, even if one of the windows is opened, the volume of the audio device 1 is not reduced, that is, the mute is not performed while the vehicle is traveling. Therefore, when the vehicle is running, the audio device 1
The required volume can be secured without the volume being reduced. Similarly, when the vehicle is stopped and the window is opened by paying a fee at the exit toll booth on the highway, the volume of the audio equipment is reduced, so it is necessary to interact with the staff at the toll booth. It is not disturbed by the volume of the audio device.

In this embodiment, it is determined in S14 whether or not the vehicle speed is zero, but it may be determined whether or not the vehicle speed is within a predetermined speed, for example, 10 km / h or less. . Next, FIG. 4 is an overall configuration diagram showing another embodiment of the vehicle acoustic control system of the invention. In FIG. 4, reference numeral 21 denotes an audio equipment main body, and the audio equipment main body 21 includes an amplifier 22 and a control unit 33.
Is equipped with. A plurality of mute circuits 24 respectively corresponding to a plurality of speakers described later are connected to the output side of the audio device main body 21, and these mute circuits 24 are connected to the speaker 26 via the switch circuit 5. ing. Here, the speakers 26 are a total of four speakers, that is, a speaker 26a arranged at the front right of the vehicle, a speaker 26b arranged at the front left, a speaker 26c arranged at the rear right, and a speaker 26d arranged at the rear left. It is composed by. Here, the switch circuit 25 can independently reduce the level of the acoustic signal for each of the four speakers via the corresponding mute circuit 24 based on the signal from the control unit 23, and FIG. Indicates that the front speakers 26a and 26b are muted.

The control unit 23 includes a mute switch 30 and an auto mute switch 3.
1. Signals are input from the door switch 32 for the right front door, the door switch 33 for the left front door, the door switch 34 for the right rear door, and the door switch 35 for the left rear door. Here, the four door switches 32 to 35 are switches that output whether each door is in an open state or a closed state.

Next, the control contents according to another embodiment of the present invention shown in FIG. 4 will be described with reference to the flow chart shown in FIG. First, in S21, it is determined whether or not the mute switch 30 is on. If it is on, a signal to that effect is output to the switch circuit 25 in S22, and the levels of the acoustic signals output to the speakers 26a to 26d are changed. It is reduced (muted) by each mute circuit 24.

In S21, the mute switch 30
If is not on, the process proceeds to S23, it is determined whether or not 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 doors are in the open state, in S25, all the speakers 26a to 26d are muted. S2
In step 4, if all the doors are not open, S
26, it is determined whether or not the front door is in the open state, and if it is in the open state, in S27, the front speaker 26
Only a and 26b are muted. If the front door is not open in S26, the process proceeds to S28, where it is determined whether the rear door is open or not. If it is open, only the rear speakers 26c and 26d are muted in S29. It If all the doors are not in the open / closed state, the process proceeds to S30. If the door is in the mute state, the mute state is released in S31.

In the embodiment shown in FIG. 5, all the speakers 26a to 26d are muted when all the doors are open, and all the front speakers 26a and 26b are opened when only the front door is open. If only the door is muted and the rear door is open, the rear speaker 26c,
Only 26d is muted. Therefore, according to this embodiment, it is possible to reduce the volume of the audio device leaking to the outside of the vehicle, and also to secure the volume necessary for the passenger in the vehicle.

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, 26b and the rear speakers 26c, 26d are selected. Although each is muted, the open state is determined for each door and the speakers 26a, 26
For example, only the speakers directed to the opened door may be muted independently for each of b, 26c, and 26d.

When the window is opened slightly for ventilation, the open state may not be set.

[0025]

As described above, according to the present invention, the volume of the audio equipment is not reduced more than necessary when the volume of the audio equipment is not originally reduced, and the volume of the audio equipment is properly adjusted. be able to. Further, since the volume of the audio device is reduced when the opening / closing body is in the open state, and the volume of the speaker corresponding to the open / close body in the closed state is not reduced, the audio device leaking out of the vehicle. The volume of can be reduced and the volume required for passengers can be secured.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a vehicle acoustic control device of the invention.

FIG. 2 is a flowchart showing an example of control contents in the embodiment of FIG.

FIG. 3 is a flowchart showing another example of control contents in the embodiment of FIG.

FIG. 4 is an overall configuration diagram showing another embodiment of the vehicle acoustic control device of the invention.

FIG. 5 is a flowchart showing an example of control contents in the embodiment of FIG.

[Explanation of symbols]

 1, 21 Audio equipment main body 2, 21 Amplifier 3, 31 Control unit 4, 24 Mute circuit 5, 25 Switch circuit 6, 26 Speaker 10, 30 Mute switch 11, 31 Auto mute switch 12 Vehicle speed sensor 13 Door switch 14 Wind switch 15 Headlight switch 32-35 Door switch

Claims (4)

[Claims] 1. An open state detecting means for detecting an open state of an opening / closing body of a vehicle, and a control means for reducing the volume of an audio device mounted on the vehicle when the detecting means detects the open state of the opening / closing body. A vehicle acoustic control device comprising: a control unit configured to inhibit a volume of the audio device from being reduced by the control unit when a predetermined condition is input to the control unit. 2. The vehicle acoustic control device according to claim 1, wherein the predetermined condition is that the vehicle speed is equal to or higher than a predetermined value. 3. The vehicle acoustic control apparatus according to claim 1, wherein the predetermined condition is that a vehicle headlight is off. 4. A vehicle acoustic control device for a vehicle, comprising: an audio device having a plurality of opening / closing bodies and a plurality of speakers arranged corresponding to the opening / closing bodies, and an opening for detecting an open state of the opening / closing body. State detecting means, control means for reducing the volume of the audio device when the open state detecting means detects the open state of the opening / closing body, and when only a part of the plurality of open / close bodies is in the open state, A sound control device for a vehicle, comprising: a prohibition unit that selectively prohibits reduction of the volume of the speaker corresponding to the opening / closing body in the closed state.