JPH0222796Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is used in vehicles to stop or reduce the volume of the sound source of a vehicle interior sound generating device such as an in-vehicle acoustic device or an in-vehicle air conditioner when an emergency vehicle approaches. The present invention relates to a volume control device.

[Conventional technology]

Conventionally, as a means for nearby general vehicles to know when an emergency vehicle is approaching, it has mainly relied on the driver of the general vehicle listening to the sound of a siren or the like mounted on the emergency vehicle.

[Problem that the invention attempts to solve]

However, recently, many vehicles are equipped with in-vehicle air conditioners such as car coolers, and in-vehicle sound devices such as car radios and car audio systems. Furthermore, when the in-vehicle sound system is activated, the sound produced by the sound system prevents the driver from noticing the siren sound emitted by the emergency vehicle, resulting in a collision with the emergency vehicle at an intersection or the like.

This idea was created by focusing on these conventional problems, and it controls the generation of sounds from in-vehicle audio equipment and air blowing noise from in-vehicle air conditioners, etc., which interfere with knowing when emergency vehicles are approaching or passing. approach of emergency vehicles,
To provide a volume control device for a vehicle, which allows general vehicles running nearby to reliably understand the passage.

[Means for solving problems]

Therefore, in this invention, the approach and passing of an emergency vehicle is detected by a general vehicle through emergency sounds such as sirens and emergency signal radio waves. The system is configured to stop or reduce the sound generated by the in-vehicle audio system and the air blowing noise from the in-vehicle air conditioner.

[Effect]

With this configuration, the driver of a general vehicle can reliably know when an emergency vehicle is approaching or passing.

〔Example〕

This invention will be explained below based on the drawings.

FIG. 1 is a schematic configuration diagram showing an embodiment of this invention, and FIG. 2 is a block circuit diagram of the same.

First, the configuration will be described. Reference numeral 10 denotes an emergency vehicle, and an emergency sound generating and emergency signal radio wave transmitting device 11 is mounted on this vehicle. The emergency sound generation and emergency signal radio wave transmission device 11 includes a sound generator 111.
and a transmitting antenna 112. 20
is a general vehicle, which is equipped with a sensing device 21 equipped with a sound collector 211 and a receiving antenna 212 that separately receive the emergency sound and emergency signal radio waves emitted by the emergency sound generating and emergency signal radio wave transmitting device 11. There is. 22 is an in-vehicle audio device, and 23 is an in-vehicle air conditioner. When the sensing device 21 detects either an emergency sound or an emergency signal radio wave, the output signal 21a is used to stop the operation of the vehicle-mounted sound device 22 or the vehicle-mounted air conditioner 23, which is the sound source, or to generate the sound. This controls whether to reduce the volume. That is, the in-vehicle audio device 22 has a car radio antenna 2211 as shown in FIG.
A switching circuit 223 selects either the car radio 221 or the car audio 222 equipped with the car radio 221 or the car audio 22 based on the output signal 21a from the sensing device 21.
control circuit 2 for stopping the operation of 2 or reducing the volume;
24 and a speaker 225.
Further, the vehicle-mounted air conditioner 23 includes an air conditioning control circuit 23.
1, and a control circuit 232 that stops the operation of the entire car cooler/car heater or reduces the speed of the air blower 233 based on the output signal 21a from the sensing device 21. 24 is an alarm display circuit, which indicates that the sensing device 21 has detected an emergency sound or an emergency signal radio wave.

The operation of the volume control device configured in this way will be explained. When the emergency vehicle 10 approaches while emitting emergency sound and emergency signal radio waves while at least one of the on-vehicle acoustic device 22 or the on-vehicle air conditioner 23 is operating, the sound collector 211 or the reception antenna 212 is activated Upon receiving the sound or emergency signal radio wave, the sensing device 21 determines whether the emergency sound or emergency signal is from the emergency vehicle 10 or not. As a result, when the sensing device 21 determines that it is an emergency sound or emergency signal radio wave from the emergency vehicle 10, the alarm display circuit 24 displays that the emergency vehicle 10 is approaching. At the same time, when the in-vehicle audio device 22 is in operation, the in-vehicle audio device 22 receives the output signal 21a from the sensing device 21, and the car radio 22 receives the output signal 21a from the sensing device 21.
21 or car audio 222, or reduce the volume of the control circuit 2.
24 is activated. Similarly, when the in-vehicle air conditioner 23 is in operation, the in-vehicle air conditioner 23 receives the output signal 21a from the sensing device 21 and stops the operation of the car cooler or car heater, or reduces the speed of the blower 233. Control circuit 2
32 is activated. Therefore, even if the general vehicle 20 is traveling with the windows closed and the car radio is operating, the approach of the emergency vehicle 10 can be reliably known.

In this embodiment, the sensing device 21 may be switched on in conjunction with the switching on of the vehicle-mounted audio device 22 or the vehicle-mounted air conditioner 23. Further, the sensing device 21 may operate upon receiving either or both of the emergency sound and the emergency signal radio wave.

[Effect of idea]

As explained above, according to this idea,
Its configuration includes a sensing device 21 that receives an emergency sound or an emergency signal emitted from an emergency vehicle 10 and discriminates and detects it; a sound source 221 of a vehicle interior sound generator 22, 23 that receives an output signal from the sensing device; 222,
231, 233 and control circuits 224, 232 that stop or reduce the generated sound volume.When an emergency vehicle approaches and passes, the sound volume control device for a vehicle is characterized by comprising control circuits 224, 232 that control circuits 231, 233 and stop or reduce the generated sound volume. Stop or lower the volume of sounds such as sounds from on-board acoustic devices and air blowing from on-board air conditioners, which prevent drivers from hearing emergency sounds such as sirens emitted by emergency vehicles. The interior of the car has been made quieter, so you can directly hear emergency sounds such as sirens emitted by emergency vehicles, making it easier to tell whether the emergency vehicle is approaching or moving away from your vehicle. This allows you to easily confirm the presence of multiple emergency vehicles approaching your vehicle at the same time. Further, in the case of a configuration that reduces the volume generated by a vehicle interior sound generating device such as a vehicle-mounted acoustic device or a vehicle-mounted air conditioner, effects such as being able to continue using the vehicle-mounted sound device, vehicle-mounted air conditioner, etc. can be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a vehicle volume control device according to the invention, and FIG. 2 is a block diagram of the same. 10...Emergency vehicle, 11...Emergency sound generator or emergency signal radio wave transmitter, 21...Sensing device, 2
2... Vehicle-mounted audio device, 23... Vehicle-mounted air conditioner, 2
24,232...control circuit.

Claims (1)

[Scope of utility model registration request] a sensing device 21 that receives an emergency sound or an emergency signal emitted from the emergency vehicle 10 and discriminates and detects it;
In response to the output signal of the sensing device, the sound generation sources 221, 222, 231 of the vehicle interior sound generation devices 22, 23,
233 and control circuits 224 and 232 for stopping or reducing the generated sound volume.