JPH0681849U - door mirror - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate the placement of an emergency vehicle approaching system on a vehicle. [Structure] A microphone 32 for collecting sounds outside the vehicle is mounted on a vehicle door mirror 10, and an emergency vehicle 4 is selected from the microphone collection signals.
A warning sound detection circuit 44 for detecting a warning sound 42 generated by 0
Then, the speaker 36 and the display 38 for notifying the alarm sound 42 when the alarm sound 42 is detected are arranged. If the speaker 36 and the display 38 are attached to the inside 30 of the door mirror vehicle, the driver can easily confirm the notification.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door mirror having a function of detecting the approach of an emergency vehicle and notifying the driver of the approach.

[0002]

[Prior art]

 Recent automobiles have high sound insulation, and it is difficult to hear outside sounds if the windows are closed. This tendency is particularly strong when listening to a car audio device at a high volume. For this reason, even if the emergency vehicle was approaching, it was delayed to notice it, and the emergency vehicle was sometimes annoying.

Therefore, as a means for solving such an inconvenience, those described in JP-A-2-274007 and JP-A-3-6797 have been conventionally proposed. This is because a microphone is placed outside the vehicle to collect the sound outside the vehicle, and the alarm sound emitted by the emergency vehicle is detected from there to reduce or reduce the volume of the car audio device or interrupt the music playback. By injecting a message informing the approach of an emergency vehicle into the car audio system and playing it back from the speaker, the driver was notified of the approach of the emergency vehicle.

[0004]

[Problems to be solved by the device]

 In the conventional emergency vehicle approach notification system, a microphone is arranged outside the vehicle, an alarm sound detection circuit is arranged to detect an alarm sound from the microphone sound collection signal, and an alarm sound is notified when the alarm sound is detected. No particular consideration was given to the arrangement of means, etc., and there was a problem that installation and wiring, etc., took time and effort, depending on the installation location.

Further, when the alarm sound detection circuit is arranged in the dashboard of the vehicle or the like and the microphone outside the vehicle is connected to the alarm sound detection circuit through a long cable, the signal flowing through this cable is Since it is an extremely small signal, it is easily affected by noise, and there is a risk of malfunction such as not detecting when an emergency vehicle is approaching, or detecting when an emergency vehicle is not approaching. When a warning sound is detected, a message that informs the approach of an emergency vehicle is mixed and injected into the audio device body and played back from the speaker, and the effect cannot be obtained unless the car audio device is operating. There was a problem.

An object of the present invention is to solve the above-mentioned problems in the conventional technology and to facilitate the arrangement of an emergency vehicle approach notification system for a vehicle.

[0007]

[Means for Solving the Problems]

 According to a first aspect of the present invention, a vehicle door mirror is provided with a microphone for collecting sound outside the vehicle, an alarm sound detection circuit for detecting an alarm sound emitted by an emergency vehicle from the microphone sound collection signal, and the alarm sound is detected. It is provided with an informing means for informing it when it is given.

According to a second aspect of the invention, the notifying means is constituted by a sounding means or a display means mounted inside the door mirror vehicle.

[0009]

[Action]

 According to the invention as set forth in claim 1, since the microphone, the alarm sound detection circuit and the notification means are collectively arranged in the door mirror, compared with the case where these are arranged separately in the vehicle, an emergency vehicle approach notification system for the vehicle is provided. Easy to place. Also, since the door mirror is located relatively close to the passenger's position, it is easy to confirm the notification.

According to the second aspect of the invention, since the sounding means or the display means is arranged inside the door mirror vehicle as the reporting means, the passenger can more surely confirm the notification.

[0011]

【Example】

 An embodiment of this invention will be described below. Fig. 2 shows an example of the arrangement of microphones and notification means when this idea is applied to the door mirror on the driver's side. (A) is a state viewed from the outside of the vehicle, (b) is an inside view of the vehicle. It is in a state of being.

The door mirror 10 is attached to the front door 12 in the sash portion 16 of the door glass 14 of the vehicle front door 12 and the sash triangular region 20 sandwiched between the front pillars 18. The door mirror 10 is fixed to the front door 12 and a base 22 which is horizontally rotatably attached to the base 22 so as to be displaceable in a protruding state and a retracting state with respect to the front door 12. And a day section 24. A mirror 26 is attached to the body portion 24. Of the door mirror 10, the entire body portion 24 and the portion of the base portion 22 on the vehicle exterior side form the door mirror vehicle exterior 28, and the portion of the base portion 22 on the vehicle interior form the door mirror vehicle interior 30.

A microphone 32 having a waterproof, windproof, and vibration-proof structure is incorporated in the body portion 24 located outside the vehicle to collect environmental sounds outside the vehicle. Further, a speaker 36 as a notification means and a display 38 such as a lamp or LED are attached to the bracket cover 34 of the base portion 22 inside the vehicle facing the inside of the vehicle. The speaker 36 can also serve as a reproduction speaker of the car audio device. Further, an alarm sound detection circuit for detecting an alarm sound 42 emitted from the emergency vehicle 40 from the sound collection signal of the microphone 32 is built in and incorporated in any part of the door mirror 10.

According to the above configuration, when the emergency vehicle 40 approaches the vehicle outside the vehicle while emitting the alarm sound 42, the alarm sound 42 is collected by the microphone 32 on the vehicle exterior side and detected by the alarm sound detection circuit. Then, an alarm buzzer sounds or an alarm message such as “Pip! An emergency vehicle is approaching. Let's drive slowly to the left!” Is emitted from the speaker 36 inside the vehicle, and the display 38 lights up or blinks. Then, the driver is notified that the emergency vehicle 40 is approaching. At the same time, the door glass 12 (power window) can be automatically opened to some extent.

An embodiment of an alarm sound detection circuit arranged in the door mirror 10 is shown in FIG. 1, and an alarm sound detection circuit 44 and an output section 46 for driving the speaker 36 and the display 38 based on the detection output thereof. Are waterproofed and incorporated in the body portion 24.

The sound collection signal output from the microphone 32 is stably amplified to a certain level by an amplifier circuit 48 with an automatic level control (ALC), and then a bandpass filter 50 outputs a warning sound of various emergency vehicles. Only the range component is extracted. The specific frequency detection circuits 52 and 54 detect a frequency component corresponding to the alarm sound (pi-po sound) of the ambulance from the output signal of the bandpass filter 50. That is, the detection circuit 52 detects the component of 770 Hz corresponding to the po tone, and the detection circuit 54 detects the component of 960 Hz corresponding to the beep tone. Further, the detection circuits 56 and 58 detect the frequency components of 820 Hz and 880 Hz from the output signal of the bandpass filter 50 as the frequency components corresponding to the warning sound (woooo sound) of the fire engine.

The beepoin sound cycle comparison circuit 60 measures the detected beepoon sound generation cycle, compares this with a prescribed beepoon sound generation cycle, and when both match, a beepoon sound detection signal S1 is detected. Is output. Further, the woo-woo sound cycle comparison circuit 62 measures the detected woo-woo sound generation cycle, compares this with the specified woo-woo sound generation cycle, and outputs the woo-woo sound detection signal S2 when both match. To do. The beep sound detection signal S1 and the woo-woo detection signal S2 are input to the OR circuit 64, and the OR circuit 64 outputs an alarm sound detection signal S3 of an ambulance or a fire engine.

The alarm sound detection signal S3 is input to the output unit 46. In the output unit 46, the voice synthesizing circuit 66 stores an alarm message, and when the alarm sound detection signal S3 is input, the alarm message is read, amplified by the amplifier 68 and reproduced from the speaker 36. Further, the LED / lamp driver 70 turns on or blinks the display 38 when the alarm sound detection signal S3 is input. The output section 72 to the other unit can send the warning sound detection signal S3 to the other unit and use it for various controls. That is, for example, the output sound can be sent to a car audio device to reduce or attenuate the output sound, or can be sent to a driver side power window control device to open the window to some extent. The power source for driving the alarm sound detection circuit 44 and the output section 46 is constantly supplied from the vehicle body side via the power cable 70 by turning on the main key (ACC on) of the vehicle. In the case of an electric door mirror (a door mirror of a system in which the motor body drives the rotation operation of the mirror body portion and the mirror angle adjustment operation), the power cable 70 can also be used as the power cable. It is also possible to mount a solar battery on any part of the door mirror 10, arrange a rechargeable battery inside, and drive with the electric power.

As described above, the driver can know the approach of the emergency vehicle by the warning message from the speaker 36 or the lighting or blinking of the display. In particular, the door mirror is one of the few automobile parts that has both the outside and the inside of the vehicle. Therefore, as in this embodiment, a microphone outside the vehicle is used to collect sounds outside the vehicle and the speaker 36 and the display inside the vehicle. It can be notified by the device 38 and is most suitable for arranging an emergency sound approach notification system. If the microphone 32, the alarm sound detection circuit 44, and the notifying means 36 and 38 are built in the door mirror 10 in advance, the door mirror 10 can be attached to the vehicle so that each of these parts can be mounted on the vehicle at the same time. Since it will be installed, it becomes easy to install the notification system on the vehicle. Further, since the distance of the signal cable from the microphone 32 to the microphone amplifier 48 of the alarm sound detection circuit 44 can be shortened, there is less risk of malfunction due to the influence of noise and wiring is easy. Further, since the alarm sound is not mixed with the car audio device main body, the notification system can be operated even when the car audio device is not operating.

When the speaker 36 also serves as the speaker of the car audio device, for example, as shown in FIG. 3, an alarm message and an audio reproduction signal are input to the switch SW1 and output to another unit 72. The switch SW1 can be switched by the output signal (when the emergency sound is not detected, the switch SW1 is always connected to the audio reproduction side, and when the emergency sound is detected, the switch SW1 is switched to the alarm message side).

[0021]

[Example of change]

 Although the alarm message is issued from the speaker 36 in the above-described embodiment, a buzzer or the like may be provided instead of the speaker 36 to notify by a buzzer sound or other various sounds.

Further, in the above embodiment, the notification is made by both sound and light, but only one may be notified.

Further, in the above embodiment, the door mirror is arranged on the driver side, but it may be arranged on the passenger side door mirror or both door mirrors.

Further, although the alarm sound of the ambulance and the fire engine is detected in the above-mentioned embodiment, it is also possible to detect the alarm sound of the police car (humming sound) and various other alarm sounds.

[0025]

[Effect of device]

 As described above, according to the invention of claim 1, since the microphone, the alarm sound detection circuit, and the notification means are collectively arranged in the door mirror, compared with the case where these are separately arranged in the vehicle, It is easy to deploy the emergency vehicle approach notification system. Also, since the door mirror is located relatively close to the passenger's position, it is easy to confirm the notification.

According to the second aspect of the present invention, since the sounding means or the display means is arranged inside the door mirror vehicle as the reporting means, the passenger can more surely confirm the notification.

[Brief description of drawings]

FIG. 1 is a control block diagram showing an embodiment of the present invention.

FIG. 2 is an external view of a door mirror to which the present invention is applied,
(A) is a state viewed from outside the vehicle, and (b) is a state viewed from inside the vehicle.

FIG. 3 is a diagram showing an example of a switching configuration of a circuit in the case where a notification speaker and a reproduction speaker of a car audio device are combined.

[Explanation of symbols]

 10 Door Mirror 28 Exterior 32 Microphone 36 Speaker (Notification Means, Sounding Means) 38 Lamp, LED (Notification Means, Display Means) 40 Emergency Vehicle 42 Warning Sound 44 Warning Sound Detection Circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location H04B 1/16 M 2116-5K H04H 1/00 L

Claims (2)

[Scope of utility model registration request] 1. A microphone disposed outside a door mirror vehicle, an alarm sound detection circuit for detecting an alarm sound emitted from an emergency vehicle from a sound collection signal of the microphone, and an alarm sound detected by the alarm sound detection circuit. A door mirror provided with a notifying means for notifying it. 2. The door mirror according to claim 1, wherein said notifying means is composed of a sounding means or a display means mounted inside the door mirror vehicle.