JPH10283573A - Emergency vehicle having emergency radio wave oscillator, vehicle having emergency radio wave receiver and electronic equipment having emergency radio wave receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely make a driver know that an emergency vehicle approaches even when the inside of his vehicle is hermetically closed by operating an emergency radio wave oscillator, working with the operation of an emergency tone generator when an emergency vehicle travels and oscillating emergency radio waves around the emergency vehicle and in its proceeding direction from a sending antenna. SOLUTION: When an instruction is orally outputted, an emergency radio wave oscillator system 140 is operated by operating a user I/F 152 under the control of a control microcomputer 151 and at the same time, an emergency tone generator system 120 is operated. An instruction by a voice from a microphone 131 is simultaneously inputted to an emergency signal encoder 143 through a preamplifier 132, an A/DC 141 and an MPEG encoder 142 and encoded. The encoded digital emergency signal is modulated into a modulation form such as FM modulation by a modulator 144 and is transmitted toward a proceeding direction from a transmitting antenna 148 through a RF amplifier 146 and a band pass filter 147.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency vehicle equipped with an emergency radio wave transmitting device for notifying a general vehicle driver traveling ahead of the emergency vehicle that the emergency vehicle is approaching so that the emergency vehicle can easily travel. And an emergency radio reception car audio device.

[0002]

2. Description of the Related Art At present, emergency vehicles such as police patrol cars, white motorcycles, ambulances, electric power companies and gas company patrol cars try to rush to the place where the emergency occurred, and use emergency lights and emergency lights. Drive while making a sound. When a driver of a general vehicle traveling in front of the emergency vehicle hears the emergency sound emitted by the emergency vehicle, it is necessary to move his vehicle to the left and slow down or stop to open the road to the emergency vehicle. Mandated by

[0003]

However, recent general vehicles have high performance, and they do not generate much noise during traveling.
In addition, the airtight performance is improved, and the inside of the car is quiet. This means that the driver in the vehicle is isolated from outside noise. Emergency vehicles emit emergency lights and sounds in an emergency to warn the surroundings, but drivers of general vehicles shielded from external sounds may not notice the emergency sounds, which may cause inconvenience for emergency vehicles. Has occurred.

An object of the present invention is to solve such a problem. An emergency vehicle has a function of transmitting a specific emergency radio wave, and a general vehicle receives the emergency radio wave. The above-mentioned problem has been solved by providing functions.

[0005]

Therefore, an emergency vehicle with an emergency radio transmission device according to the present invention is provided with an emergency sound generator, an emergency light lighting device and a certain emergency radio wave in the forward direction. An emergency radio wave transmitting device including a transmitting antenna for transmitting is provided, and the emergency radio wave transmitting device is operated at least in conjunction with the operation of the emergency sound generating device when the emergency vehicle travels due to an emergency. Activate, or actuate the emergency sound generator in conjunction with the operation of the emergency radio wave transmitting device, configured to transmit the emergency radio wave from the transmitting antenna in the vicinity and traveling direction of the emergency vehicle, and Power supply device, accessory engine starting device, on-vehicle receiving antenna, and radio receiver for vehicles with volume such as AM radio receiver and FM radio receiver Or an audio device for a vehicle with a volume such as a magnetic tape reproducing device or a CD device, a radio wave information receiving device for a vehicle with a volume such as a TV receiver or a car navigation device, or some of these devices and a speaker. The equipped vehicle includes an emergency radio wave receiving device that receives an emergency radio wave transmitted from the emergency vehicle by the on-vehicle receiving antenna, demodulates the information, and notifies a driver that the emergency vehicle is approaching from a speaker. Electronic equipment with an emergency radio receiver, and the accessory engine starter of the vehicle with the emergency radio receiver connects the power supply device and the emergency radio receiver to put the emergency radio receiver in a receiving state. So that
The above problem has been solved.

Therefore, the emergency vehicle of the present invention emits the emergency light and the emergency sound and transmits a specific emergency radio wave when the vehicle is rushed to the site where an emergency has occurred. Emergency radio waves can be automatically received by the emergency radio wave receiving device, and the driver is alerted that an emergency vehicle is approaching, and the driver can clearly judge that the emergency vehicle is approaching. You can slow down by bringing your vehicle to the side of the road,
Alternatively, it can be stopped to open the way for approaching emergency vehicles.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an emergency vehicle with an emergency radio transmission device, a vehicle with an emergency radio reception device, and an electronic device with an emergency radio reception device according to the present invention will be described with reference to the drawings. FIG. 1 is an electronic circuit block diagram of an electronic device mounted on an emergency vehicle with an emergency radio transmission device of the present invention. FIG. 2 is a front part of an electronic device mounted on a vehicle with an emergency radio reception device of the present invention. 3 is an electronic circuit block diagram of a middle part following FIG. 2, and FIG. 4 is an electronic circuit block diagram of a latter part following FIG.

First, the configuration of an electronic circuit of an emergency vehicle with an emergency radio transmission device according to an embodiment of the present invention will be described with reference to FIG. In FIG. 1, reference numeral 100 indicates an electronic device including an emergency radio wave transmitting device mounted on the emergency vehicle of the present invention. The electronic device 100 includes a warning light system 110, a warning sound generation system 120, an announcement system 130, an emergency radio wave transmission system 140, which is a feature of the present invention, and an electronic control system 150 for controlling these systems. .

The warning light system 110 includes a conventional warning light 1.
The warning light 111 is controlled from a later-described electronic control system 150 through a control bus 157. The alarm sound generator system 120 includes a conventional siren or speaker (hereinafter, simply referred to as “speaker”) speaker 121 and a volume control (VO).
L) Oscillator (hereinafter referred to simply as “oscillator”) 122
The oscillator 122 is controlled from an electronic control system 150 described later via a control bus 158. The speaker 121 may also be used as a speaker 135 described later. The announcement system 130 includes a conventional microphone (microphone) 131 and a preamplifier (PRE).
-AMP) 132, a main amplifier (AMP) 133, a volume (VOL) 134, and a speaker 135. The volume 134 is controlled by a later-described electronic control system 150 through a control (CTL) bus 159.

Further, the emergency radio wave transmitting device system 140 includes:
The microphone 131 and the preamplifier 132 are shared, and an analog / digital converter (A / DC; hereinafter, “A / D”) connected to the output side of the preamplifier 132
C) 141, MPEG encoder 142, emergency signal encoder 143, and modulator 1 such as FM, PCM, etc.
44, a local oscillator (OSC) 145, and an RF amplifier (RF
-AMP) 146 and the band pass filter (BPF) 14
7 and a directional transmitting antenna (transmitting ANT) 148. The emergency signal encoder 143 and the local oscillator 145 are controlled from a later-described electronic control system 150 through control (CTL) buses 155 and 156.

The electronic control system 150 mainly includes a control (CTL) microcomputer 151, and a user I / F (interface) 152 such as a keyboard connected to the control (CTL) bus 154 and a character display device as required. The emergency signal encoder 143 sends and receives control signals via the control microcomputer 151 and the control bus 155. The local oscillator 145 controls the control signal via the control microcomputer 151 and the control bus 156. A signal is transmitted and received, and the warning light 111 is controlled (C
TL) via the bus 157, the alarm sound generator system 12
0 oscillator 122 is connected to control (CTL) bus 158.
Through the volume of the announcement system 130 (VO
L) 134 via a control (CTL) bus 159 and the character display 153 via a control (C)
TL) is controlled via a bus 160.

Next, an emergency radio wave receiving apparatus for receiving an emergency radio wave transmitted from an emergency vehicle and a configuration of an electronic circuit of a vehicle equipped with the same will be described with reference to FIGS. As shown in FIG. 2 to FIG. 4 as one embodiment, a general vehicle 300 of the present invention
The electronic device 200 with the emergency radio receiver mounted on the
A vehicle audio device system 210, an FM radio receiving device system 220, an AM radio receiving device system 230, an emergency radio wave receiving device system 240, an electronic control system 250 for controlling these devices, and the FM radio receiving device system 220, consists of high frequency / intermediate frequency amplifiers common to the AM radio receiver system 230 and the emergency radio receiver system 240,
FIG. 2 to FIG.
0 and connected to the power supply 310.

The vehicle audio device system 210 includes at least one type of audio device 211 such as a magnetic tape reproducing device, a CD device, and an MD device, and an amplifier / volume (AMP / VOL) 212 connected to the output side.
And the amplifier / volume 212
Are connected to a common selector 207. Selector 2
07 is connected to a common speaker 208.

The FM radio receiving system 220 is an FM radio receiving system.
It comprises a radio receiving device 221 and an amplifier / volume (AMP / VOL) 222 connected to this output side.
07.

The AM radio receiver system 230 is an
It comprises a radio receiver 231 and an amplifier / volume (AMP / VOL) 232 connected to the output side.
07.

The FM radio receiver 221 and the AM radio receiver 231 are an RF amplifier (RF-AM) connected to the common in-vehicle receiving antenna 201.
P) 202, a mixer 203 and a first local oscillator 204 connected to the output side, and an IF (intermediate frequency) amplifier (IF-AMP) 2 connected to the output side of the mixer 203.
05 and a band-pass filter (BPF) 206 connected to the output side of the IF amplifier 205. The oscillation frequency of the first local oscillator 204 is switched in accordance with the radio frequency of the broadcasting station.
This is performed by control signals from the control (CTL) microcomputer 251 and the control (CTL) bus 262 transmitted in conjunction with the operation of selecting a broadcasting station by operating the / F 253.

The emergency radio wave receiving system 240 is provided with the R
A mixer 241 and a second local oscillator 242 connected to the output side of the F-amplifier 202; an IF amplifier (IF-AMP) 243 connected to the output side of the mixer 241;
A band-pass filter (BPF) 244 connected to the output side of the F-amplifier 243;
An emergency radio decoder and a digital / analog converter (hereinafter referred to as “decoder / D
/ AC) 245 and an amplifier / volume (AMP / VOL) 246 connected to the output side. The amplifier / volume 246 is connected to the selector 207. The second local oscillator 24
Since the oscillation frequency of No. 2 is a fixed frequency, it may be fixed. However, in the case of this embodiment, it is necessary to change the frequency of the emergency radio wave emitted by the emergency vehicle depending on the area where the emergency vehicle operates. If the control bus 2
The configuration is such that the setting of the oscillation frequency of the second local oscillator 242 can be changed by a command from the control microcomputer 251 via the control microcomputer 59.

The electronic control system 250 is mainly composed of a control microcomputer 251.
51, a user I / F 253 such as a keyboard connected by a control (CTL) bus 252 and a character display device 255 connected by a control (CTL) bus 254 as necessary.

The amplifier / volume (AMP / VOL) 212 of the vehicle audio system 210 is connected via a control (CTL) bus 256 to the amplifier / volume (AMP / VOL) of the FM radio system 220.
222 is via a control (CTL) bus 257,
The amplifier / volume (AMP / VOL) 232 of the AM radio receiver system 230 is connected via a control (CTL) bus 258, and the second local oscillator 242 of the emergency radio receiver system 240 is connected to a control (CTL) bus 25.
9 via the amplifier / volume (AMP / VO)
L) 246 is via a control (CTL) bus 261; the common first local oscillator 204 is via a control (CTL) bus 262; the selector 207 is via a control (CTL) bus 263; The display device 255 is controlled via the control bus 254, respectively. Also, the decoder D / AC24
5 and the control microcomputer 251, and the control microcomputer 251 and the user I / F 253 transmit and receive control signals via control buses 260 and 252, respectively.

The electronic device 200 is connected to a power supply 310 when mounted on a general vehicle 300. That is, the (+) electrode of the vehicle-mounted battery 311 serving as the power supply of the power supply device 310 of the general vehicle 300 is connected to an accessory engine start switch (hereinafter, abbreviated as “accessory switch”) SWm provided in the general vehicle. The control microcomputer 251 is connected to the accessory switch SWm. An accessory engine start key (hereinafter, abbreviated as “key”) K is inserted into the accessory switch SWm, and the engine of the vehicle can be started by turning. If the rotation of the key K is stopped at the rotation position before the engine start position, the control microcomputer 2 will be described later.
51 can be turned on / off, and only the electronic device 200 can be started.

The audio device 211, FM radio receiving device 221, AM radio receiving device 231, decoder / D / AC 245, RF amplifier 202, first local oscillator 204, IF amplifier 243, second local oscillator 24
2, amplifier / volume 212, 222, 232, 24
6 and the character display device 255 are also changeover switches S
It is connected to the (+) electrode of the battery 311 via Wn. Further, these changeover switches SWn are controlled by a control signal from the control microcomputer 251 via a power control bus 264 connected to the control microcomputer 251.

Next, the operation of the electronic device 100, the emergency vehicle equipped with the same, and the electronic device 200 and the operation of the general vehicle 300 equipped with the same will be described. First, the emergency vehicle of FIG. 1 will be described. The operations of the warning light system 110, the warning sound generator system 120, and the announcement system 130 are the same as those of the conventional emergency vehicle electronic device. The driver or passenger is the user I / F1
When a certain instruction is issued by operating the controller 52, a control signal corresponding to the instruction is transmitted through each control bus based on the control microcomputer 151, and the instruction is transmitted to the warning light 111.
, The alarm lamp 111 is controlled and lit through the control bus 157, and if the instruction is to activate the alarm sound generator system 120, the oscillator 122 is controlled through the control bus 158 and the volume is Sound is emitted from the speaker 121 in the adjusted state. Also,
When giving verbal instructions such as "Turn right. Stop the car.", "Turn left. Stop the car.", "Go straight at the intersection." When the announcement system 130 is operated under the control of the microphone 131 and an instruction is issued from the microphone 131, the sound is amplified by the preamplifier 132 and the main amplifier 133, and the volume 134 is controlled by the control bus 159.
Is controlled by a control signal from the control microcomputer 151 through the speaker 135 and is output from the speaker 135.

The verbal instruction is also input to the emergency radio wave transmitting system 140 which is a feature of the present invention. This operation will be described below, including emergency radio waves and character transmission. When giving the verbal instruction, the user I / F 152
To operate the emergency radio wave transmitting device system 140 under the control of the control microcomputer 151 and at the same time. The instruction by voice from the microphone 131 is input to the preamplifier 132 and amplified at the same time.
The digital signal is digitized in C141, and the digital signal is compressed as it is or by using a signal compression technique such as an MPEG encoder, and is input to the emergency signal encoder 143 and encoded. The emergency signal encoder 143 also has a user I / F 1
52 to the control microcomputer 151,
An emergency signal of a certain frequency and character information to be transmitted (for example,
Destination and route) are input through the control bus 155 and encoded with the digital information of the voice instruction.

The encoded digital emergency signal modulates an RF frequency carrier from a local oscillator 145 in a modulator 144 in any modulation form such as FM modulation and PCM modulation. The modulated digital emergency signal is transmitted from the transmitting antenna 148 via the RF amplifier 146 and the band-pass filter 147 in the traveling direction.

[0025] The frequency of the RF frequency carrier must be set for each area served by the emergency vehicle,
When the local oscillator 145 is set by the control microcomputer 151 when the local oscillator 145 is set for each region and the carrier frequency of the emergency radio wave is the same in any region, this control microcomputer is used. It is not necessary to set the switching by the local oscillator 151.
The transmission frequency of 45 may be fixed.

The character information input by the user I / F 152 is transmitted from the control microcomputer 151 to the control bus 1.
The character information is also transmitted to the character display device 153 via 60, and the character information to be transmitted is displayed on the character display device 153.

Next, the operation of the electronic device 200 of the present invention and the general vehicle 300 including the same will be described. General vehicle 30
0 indicates that the key K is set to the accessory switch SW as described above.
m, and turned on by turning, the control microcomputer 251 is operated by being supplied with power from the battery 311, and similarly operates in the vehicle audio system 21.
0, the FM radio receiving system 220, the AM radio receiving system 230, and the emergency radio receiving system 240 are also in the operation standby state.

When a certain instruction is issued by operating the user I / F 253, a control signal corresponding to the instruction is transmitted through each control bus under the control microcomputer 251, and the instruction is transmitted to the vehicle audio system. 210
Is activated, the changeover switch SWn for supplying power to this system is turned on, the audio device 211 is activated, and the control microcomputer 25 is controlled via the control bus 256.
The amplifier / volume 212 is adjusted by the control signal from 1 to adjust the volume.

Further, the instruction is transmitted to the FM radio receiving system 2
20, the changeover switch SWn for supplying power to this system is turned on, and the FM radio receiver 221 is turned on.
Broadcast radio waves are received and demodulated, and the output signal is amplified by the amplifier / volume 222, and simultaneously the control bus 25
The volume is adjusted by the control signal from the control microcomputer 251 supplied through the
8 is adjusted.

Further, if the instruction is to activate the AM radio receiver system 230, the changeover switch SWn for supplying power to this system is turned on, and the AM radio receiver 231 receives and demodulates the AM broadcast radio wave. Output signal is amplifier /
The control microcomputer 251 amplified by the volume 232 and simultaneously supplied through the control bus 258
The volume is adjusted by the control signal from the speaker 208, and the volume from the speaker 208 is adjusted.

The selector 207 is also switched based on the control signal of the control microcomputer 251 in conjunction with the instruction of the user I / F 253 via the control bus 263, and the adjusted reproduced sound from each system is output. Sound is emitted from the speaker 208.

As described above, the vehicle audio system 2
10, when any one of the FM radio receiving system 220 and the AM radio receiving system 230 is in the operating state, or not in operation and in the operation standby state, it is present in the traveling direction of the emergency vehicle. When the emergency radio wave arrives at the on-vehicle receiving antenna 201 of the general vehicle 300 that is running (running), the emergency radio wave receiving system 2 in an operation standby state
40 is activated and the emergency radio wave is received.

The received emergency radio signal is transmitted to the RF amplifier 202.
, And the mixer 241 and the second local oscillator 24
2 and converted into an intermediate frequency signal, and the band-pass filter 244 extracts the digital emergency signal. The digital emergency signal is demodulated in a decoder / D / AC 245 at the next stage, where the voice instruction signal, the emergency signal and the character information signal are demodulated. The demodulated voice instruction signal and emergency signal are transmitted to the amplifier / volume 246, amplified there, and the volume is adjusted by the control signal from the control microcomputer 251. A sound is emitted and the driver can be notified that the emergency vehicle is approaching and the traveling direction.

The control microcomputer 251 determines that the vehicle 300 has received the emergency radio wave by using a decoder / D / AC.
If any one of the vehicular audio system 210, the FM radio receiving system 220, and the AM radio receiving system 230 is operating, the amplifier / volume 212, 222, 232 is recognized. A control signal is transmitted from the control microcomputer 251 via one of the control buses 256, 257, 258 to automatically attenuate or cut off the volume emitted from the speaker 208 during reception of emergency radio waves. I do.
On the other hand, the amplifier / volume 246 automatically adjusts and operates in the direction of increasing the volume of the other amplifier / volume by the control signal of the control microcomputer 251 via the control bus 261 during reception of the emergency radio wave. The interruption is performed by the selector 20 via the control bus 263 based on a control signal of the control microcomputer 251.
7 may be operated. If the emergency signal disappears,
No control signal from the control microcomputer 251 is generated, and therefore, any of the amplifier / volume 212,
Both 222, 232 and 246 and the selector 207 return to the original state.

The character information signal demodulated by the decoder D / AC is displayed on the screen of the character display device 255 via the control microcomputer 251 and the control bus 255, and is notified to the driver in an auxiliary manner.

In the embodiment described above, the TV receiver,
Although a vehicle radio wave information receiving device such as a car navigation device is not illustrated, it should be added that the present invention can be applied to a case where such a vehicle radio wave information receiving device is provided.

[0037]

As is apparent from the above description, when an emergency transmission / reception system is constructed by the emergency vehicle with the emergency radio wave transmitting device and the vehicle with the emergency radio wave receiving device of the present invention, the emergency radio wave transmitted from the emergency vehicle of the present invention is obtained. The vehicle according to the present invention can notify the driver that the emergency vehicle is approaching and the traveling direction even when the inside of the vehicle is closed, and the driver is 100% aware of the emergency vehicle Since the direction of travel can be determined, the road is quickly yielded for an emergency vehicle.

Therefore, the emergency vehicle according to the present invention allows the vehicle to travel safely, and furthermore, the time required to reach the destination can be greatly reduced. Further, since the propagation range of the emergency radio wave transmitted by the emergency vehicle is limited to the traveling direction, the emergency radio wave does not reach general vehicles traveling in other areas, and accordingly, the audio device, the FM radio receiving device, and the
Even if the M radio receiving device or the like is in operation, it does not affect them.

Further, the vehicle and the emergency radio wave receiving device of the present invention can be configured such that the driver can use an audio device, an FM radio receiving device,
Even if the M radio receiving device or the like is not operated, when the emergency radio wave transmitted by the emergency vehicle is received, the emergency radio wave receiving device can be automatically activated to call the driver's attention. On the other hand, even if the driver is operating the audio device, FM radio receiving device, FM radio receiving device, etc., only the sound volume is temporarily attenuated or cut off, and the emergency vehicle passes and the emergency radio wave disappears. The driver can automatically return to the original operating state, so that the driver can
There is no need to operate the FM radio receiver, the FM radio receiver, or the like at all, and it is only necessary to pay attention to the operation of the vehicle. Furthermore, the electronic device with an emergency radio receiver according to the present invention can be handled as an article of car accessories attached to an AM / FM radio receiver. As described above, the present invention has many excellent effects.

[Brief description of the drawings]

FIG. 1 is an electronic circuit block diagram of an electronic device mounted on an emergency vehicle with an emergency radio wave transmitting device according to the present invention.

FIG. 2 is an electronic circuit block diagram of a front part of an electronic device mounted on the vehicle with the emergency radio wave receiving device of the present invention.

FIG. 3 is an electronic circuit block diagram of a middle section following FIG. 2;

FIG. 4 is an electronic circuit block diagram of a subsequent stage following FIG. 3;

[Explanation of symbols]

100 ... Electronic device mounted on emergency vehicle of the present invention, 1
10 ... warning light system, 120 ... warning sound generator system, 130 ...
Announcement system, 143 ... emergency signal encoder, 144 ...
Modulator, 150 ... Electronic control system, 151 ... Control microcomputer, 200 ... Electronic device with emergency radio wave receiver according to one embodiment of the present invention, 210 ... Vehicle audio device system, 21
1. Audio device 220 FM radio receiver system
221 FM radio receiver, 230... AM radio receiver, 231... AM radio receiver, 212, 222,
232, 246 amplifier / volume, 207 selector, 240 emergency radio receiver system, 203, 241 mixer, 204 first local oscillator, 242 second local oscillator, 245 decoder D / AC, 250 Electronic control system, 251, control microcomputer, 255, character display device, K, accessory engine start key (key), S
Wm: Accessory engine start switch (accessory switch), SWn: Changeover switch

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI H04B 1/034 H04B 1/034 L

Claims (4)

[Claims] 1. An emergency vehicle including an emergency sound generator, an emergency light lighting device, and an emergency radio transmission device including a transmission antenna for transmitting a specific emergency radio wave in a forward direction. When the emergency vehicle travels due to the occurrence of an emergency, the emergency radio wave transmitting device is operated at least in conjunction with the operation of the emergency sound generating device, and the emergency radio wave is transmitted from the transmitting antenna in the vicinity and in the traveling direction of the emergency vehicle. An emergency vehicle with an emergency radio transmission device, wherein the emergency vehicle is configured to transmit. 2. A power supply device, an accessory engine starting device, a vehicle-mounted receiving antenna, an AM radio receiving device,
Whether it is a radio receiver with a volume such as an FM radio receiver or an audio device with a volume such as a magnetic tape reproducing device or a CD device, or a radio wave information receiver with a volume such as a TV receiver or a car navigation device Alternatively, some of these devices, a speaker, and an emergency radio wave transmitted by the emergency vehicle are received by the on-vehicle receiving antenna, demodulated, and the driver is notified from the speaker that the emergency vehicle is approaching. An electronic device with an emergency radio wave receiving device comprising an emergency radio wave receiving device, wherein the accessory power supply device and the emergency radio wave receiving device are connected by the accessory engine starting device to put the emergency radio wave receiving device in a receiving state. A vehicle with an emergency radio receiver. 3. The electronic device with the emergency radio wave receiving device,
When the emergency radio wave is received by the emergency radio wave reception device while the vehicle radio reception device, the vehicle audio device, or the vehicle radio wave information reception device is operating, the reception emergency radio wave is received during the reception of the emergency radio wave. The vehicle with an emergency radio receiver according to claim 2, further comprising a control device that automatically attenuates or shuts off the volume of the operating device on the basis of the following. 4. A radio receiver for a vehicle with a volume, such as an AM radio receiver or an FM radio receiver, an audio device for a volumetric vehicle, such as a magnetic tape reproducing device or a CD device, a TV receiver, a car navigation device, etc. Radio wave information receiver for vehicles with volume
Alternatively, an electronic device equipped with an emergency radio wave receiving device including an emergency radio wave receiving device configured to receive and demodulate some of these devices and an emergency radio wave transmitted from the emergency vehicle and notify the driver of the approach of the emergency vehicle to the driver. When the emergency radio wave is received by the emergency radio wave receiving device while the vehicle radio receiving device, the vehicle audio device, or the vehicle radio wave information receiving device is operating, during the reception of the emergency radio wave, An electronic device with an emergency radio receiver, comprising: a control device that automatically attenuates or shuts off the volume of the operating device based on a received emergency radio wave.