JP2017218052A - Vehicle alarm device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle alarm device capable of automatically adjusting an alarm tone according to a time zone to suppress noise at night.SOLUTION: A vehicle alarm device capable of outputting an alarm tone when a vehicle travels backward, comprises: a light switch 9 capable of generating an ON signal to turn on width indicators 10 according to a time zone; and an attenuation circuit 4 capable of adjusting a sound volume of the alarm tone according to the time zone on the basis of the signal generated by the light switch 9. The vehicle alarm device is configured to reduce the sound volume of the alarm tone, or not to output the alarm tone, when the time zone is night or early morning.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle alarm device capable of outputting an alarm sound toward the outside of a vehicle when the vehicle moves backward.

  For large vehicles such as trucks, when the vehicle is moved backward (back), when the shift operation means is switched to the reverse gear, the back lamp attached to the rear of the vehicle lights up and an alarm sound such as a buzzer sounds outside the vehicle. It is configured so as to alert the person in the rear position by outputting toward Such an alarm sound is supposed to be output by a vehicle alarm device attached to the vehicle, and is set to a relatively large volume for alerting. In addition, since this prior art is not related to the literature known invention, there is no prior art document information to be described.

  However, in the above conventional vehicle alarm device, the alarm sound is output at a relatively large volume at night or early morning regardless of the time zone, so there is a noise problem when used in a dense area such as a residential area. There was a risk that it would occur. However, the vehicle alarm device is required to be attached not only to a large vehicle but also to all vehicles including small vehicles. In that case, a noise problem due to an alarm sound may become more obvious.

  This invention is made in view of such a situation, and provides the vehicle alarm device which can adjust a warning sound automatically according to a time slot | zone and can suppress the noise at night or early morning. is there.

  According to a first aspect of the present invention, there is provided a vehicle alarm device capable of outputting an alarm sound toward the outside of the vehicle when the vehicle moves backward, a time zone signal generating means capable of generating a signal corresponding to the time zone, and the signal generating means. And a volume adjusting means capable of adjusting the volume of the alarm sound according to the time zone.

  According to a second aspect of the present invention, in the vehicular alarm device according to the first aspect, the volume adjusting means reduces the volume of the alarm sound or does not output the alarm sound when the time zone is night or early morning. It is characterized by.

  According to a third aspect of the present invention, in the vehicle alarm device according to the first or second aspect, the time zone signal generating means can generate an on signal of a width lamp or a headlamp mounted on the vehicle. It is characterized by that.

  According to a fourth aspect of the present invention, in the vehicle alarm device according to the first or second aspect of the invention, the time zone signal generating means detects a brightness of the surroundings, or a vehicle width lamp or a headlight mounted on the vehicle. It consists of a light / dark sensor for on / off control of the lamp.

  According to a fifth aspect of the present invention, in the vehicle alarm device according to the first or second aspect, the time zone signal generating means comprises a timepiece.

  According to a sixth aspect of the present invention, in the vehicle alarm device according to any one of the first to fifth aspects, the alarm sound is a melody sound having a predetermined rhythm.

  The invention according to claim 7 is the vehicle alarm device according to claim 6, wherein the alarm sound has a plurality of melody sounds having different rhythms, and any one of the melody sounds is arbitrarily selected. It is made possible.

  According to the first aspect of the present invention, the time zone signal generation means capable of generating a signal according to the time zone, and the volume of the alarm sound can be adjusted according to the time zone based on the signal generated by the signal generation means. Since the sound volume adjusting means is provided, the alarm sound can be automatically adjusted according to the time zone to suppress noise at night or early morning.

  According to the invention of claim 2, when the time zone is at night or early morning, the volume of the alarm sound is reduced or the alarm sound is not output, so that the noise at night or early morning is more reliably suppressed. be able to.

  According to the invention of claim 3, since the time zone signal generating means can generate the on signal of the vehicle width lamp or the headlamp mounted on the vehicle, the time during which the vehicle width lamp or the headlamp lights up. Noise due to alarm sound can be suppressed in the belt.

  According to the invention of claim 4, the time zone signal generating means comprises a light / dark sensor for detecting the ambient brightness and controlling on / off of the vehicle width lamp or the headlight mounted on the vehicle. It is possible to suppress noise caused by an alarm sound in a dark time zone.

  According to the invention of claim 5, since the time zone signal generating means comprises a clock, the time zone of night or early morning can be grasped based on the detected time, and the noise caused by the alarm sound in the time zone can be obtained. Can be suppressed.

  According to the invention of claim 6, since the alarm sound is composed of a melody sound having a predetermined rhythm, it can be avoided that an alarm sound unpleasant and unpleasant is output to surrounding people, and noise can be avoided. It can suppress more smoothly.

  According to the seventh aspect of the present invention, the alarm sound has a plurality of melody sounds having different rhythms, and any one of the melody sounds can be arbitrarily selected. The corresponding alarm sound can be arbitrarily output, and the alarm sound can be made more comfortable than a buzzer or the like.

The block diagram which shows the alarm device for vehicles which concerns on the 1st Embodiment of this invention. The block diagram which shows the alarm device for vehicles which concerns on the 2nd Embodiment of this invention. The block diagram which shows the alarm device for vehicles which concerns on the 3rd Embodiment of this invention. The block diagram which shows the alarm device for vehicles which concerns on the 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The vehicle alarm device according to the present embodiment is attached to a vehicle such as an automobile and outputs a warning sound toward the outside of the vehicle when the vehicle moves backward (back), thereby alerting the vehicle moving backward. As shown in FIG. 1, the shift operation means 7 mounted on the vehicle and the light switch 9 (time zone signal generation means) capable of turning on / off the vehicle width lamp 10 are electrically connected to each other. The alarm device main body 1 is provided. In addition, the code | symbol 8 has shown the back lamp attached to the vehicle back.

  The speed change operation means 7 is used to change the speed of an AT transmission (automatic transmission). When the driver arbitrarily swings the shift lever, the P range, R range (reverse speed), N range (Neutral), D range and L range (forward movement) can be switched. Further, when the shift operation means 7 is switched to the R range (reverse speed), the back lamp 8 can be turned on. In this embodiment, the present invention is applied to the AT transmission, but may be applied to an MT transmission (manual transmission) in which a driver manually performs a shifting operation.

  The light switch 9 is composed of, for example, an operation means that is disposed on a vehicle combination switch or the like and can be operated by the driver. By turning on / off the light switch 9, a vehicle width lamp 10 (position switch) mounted on the vehicle is turned on. Or it can be turned off. In the present embodiment, the light switch 9 is an operation means that can turn on or turn off the vehicle width lamp. However, the operation means that can turn on or off a headlamp mounted on the vehicle. It is good.

  The light switch 9 according to the present embodiment constitutes the “time zone signal generating means” of the present invention. That is, in a time zone where the surroundings are dark (nighttime or early morning), the driver turns on the light switch 9 to turn on the vehicle width lamp 10 (the same applies to the headlamp). The signal (ON signal of the light switch 9) can be generated.

  However, the shift operation means 7 and the backlight 8 are electrically connected via the wiring La, and when the shift lever of the shift operation means 7 is positioned in the R range (reverse speed), the power from the power source is The backlight 8 can be turned on by being supplied. The light switch 9 and the vehicle width lamp 10 are electrically connected via the wiring Lb. When the light switch 9 is turned on, the power from the power source is supplied and the vehicle width light 10 can be turned on. Has been.

  The alarm device body 1 is composed of an electric circuit that is attached to a vehicle and can output an alarm sound when the vehicle moves backward, and stores a speaker 2 that can output an alarm sound and a predetermined alarm sound. A sound source circuit 3, an attenuation circuit 4 (volume adjusting means) for adjusting the volume output from the speaker 2, and a drive circuit 5 for outputting an alarm sound whose volume is adjusted by the attenuation circuit 4 from the speaker 2. It is configured.

  The sound source circuit 3 is provided with a first input line L1 that can be energized, and the line La on the shift operation means 7 side and the sound source circuit 3 are electrically connected via the first input line L1. . When the shift lever of the speed change operation means 7 is positioned in the R range (reverse speed), an electric signal having a predetermined voltage can be input as the backlight 8 is turned on. The sound source circuit 3 has an IC in which a predetermined alarm sound is stored in advance, and the stored alarm sound can be output from the speaker 2 when an electric signal is input. The alarm sound according to the present embodiment is composed of a melody sound having a predetermined rhythm, and for example, an electronic sound composed of general-purpose music or a dedicated music rhythm is preferable.

  The attenuation circuit 4 is electrically connected to the sound source circuit 3 and is extended with a second input wiring L2 that can be energized, and is attenuated with the wiring Lb on the light switch 9 side via the second input wiring L2. The circuit 4 is electrically connected. An operation switch 6 that can be arbitrarily operated by the driver is attached to the second input wiring L2. When the light switch 9 is turned on when the operation switch 6 is in the on state, the electric light input from the sound source circuit 3 is attenuated (voltage is reduced) as the vehicle width lamp 10 is turned on. When the light switch 9 (or the operation switch 6) is in the off state, the electric signal input from the sound source circuit 3 is not attenuated and the voltage is maintained.

  The drive circuit 5 is electrically connected to the attenuation circuit 4 and the speaker 2, and sets the alarm sound stored in the sound source circuit 3 to a set volume (a preset volume or a volume reduced by the attenuation circuit 4). Can be output from the speaker 2. That is, when the light switch 9 (or the operation switch 6) is in the OFF state, the electric signal input from the sound source circuit 3 is not attenuated (voltage drop) by the attenuation circuit 4, but is alarmed at a preset volume from the speaker 2. When a sound is output and the light switch 9 (and the operation switch 6) is in an ON state, the electrical signal input from the sound source circuit 3 is attenuated (voltage drop) by the attenuation circuit 4, and is preliminarily output from the speaker 2. The alarm sound is output at a volume lower than the set volume.

  Furthermore, the attenuation circuit 4 may be configured to block the electrical signal input from the sound source circuit 3 from being transmitted to the drive circuit 5 and not output a warning sound from the speaker 2 (volume 0). Thus, in the time zone where the vehicle width lamp 10 (or headlight) is turned on (that is, at night or early morning), if the shift lever of the shift operation means 7 is operated to the R range (reverse gear), the volume is lower than the set volume. The alarm sound is output from the speaker 2 at the volume, or the alarm sound is not output from the speaker 2.

  In this embodiment, since the operation switch 6 is formed on the second input wiring L2, when the operation switch 6 is turned off, the light switch 9 (or the operation switch 6) is turned on. The electric signal input from the sound source circuit 3 is not attenuated (voltage drop) by the attenuation circuit 4, and an alarm sound is output from the speaker 2 at a preset volume. It should be noted that the operation switch 6 is formed on the first input wiring L1, and the operation switch 6 is turned off, so that the alarm from the speaker 2 even if the shift lever of the speed change operation means 7 is operated in the R range (reverse speed). You may comprise so that a sound may not be output.

  The operation switch 6 suffices if it is attached to a predetermined position in the vehicle that can be operated by the driver. For example, the operation switch 6 may be attached to a shift knob formed on the shift lever of the transmission operation device 7. In this case, a separate operation switch 6 such as a push button may be attached to the shift knob, or an overdrive switch (O / D) formed on the shift knob (whether the vehicle uses the highest speed gear in the vehicle transmission) A changeover switch or the like may be used. Of course, the operation switch 6 may not be provided.

  According to the embodiment, the light switch 9 (time zone signal generating means) that can generate a signal (ON signal) according to the time zone, and the alarm according to the time zone based on the signal generated by the light switch 9 Since the attenuation circuit 4 (volume adjustment means) capable of adjusting the sound volume is provided, the alarm sound can be automatically adjusted according to the time zone to suppress nighttime or early morning noise. In addition, since the attenuation circuit 4 (volume adjusting unit) according to the present embodiment reduces the volume of the alarm sound or does not output the alarm sound when the time zone is night or early morning, the noise at night or early morning is more sure. Can be suppressed.

  In particular, the time zone signal generating means according to the present embodiment can generate an ON signal of the vehicle width lamp 10 (or headlight) mounted on the vehicle. Noise caused by an alarm sound can be suppressed during the time zone when is lit. Further, it is possible to input an ON signal of the vehicle width lamp 10 and an ON signal of the headlight to the attenuation circuit 4 so that only the vehicle width lamp 10 is turned on when the headlight and the vehicle width lamp 10 are turned on. The sound volume of the warning sound may be different depending on the time (for example, the sound volume of the warning sound is reduced when only the width lamp 10 is turned on rather than when the headlight is turned on). Good.

  Furthermore, since the alarm sound according to the present embodiment is composed of a melody sound having a predetermined rhythm, it can be avoided that an alarm sound that is unpleasant and unpleasant is output to surrounding people, and the noise is smoother. Can be suppressed. Note that the alarm sound output from the speaker 2 is not limited to the melody sound, and may be a buzzer, a sound (a sound indicating that the sound is to be backed), or the like. However, even in such a case, it is necessary to reduce alarm sounds such as buzzers and voices or not to output alarm sounds when the time zone is night or early morning.

  Further, in the present embodiment, when the vehicle width lamp 10 (or the headlamp (headlight)) is lit by an ON signal generated by turning on the light switch 9 (time zone signal generating means), When the shift lever of the speed change operation device 7 is switched to the R range (reverse gear), the left and right turn signals arranged on the rear side of the vehicle may be blinked. Although all turn signals are blinking, the left and right turn signals arranged on the front side of the vehicle may be kept off and only the left and right turn signals arranged on the rear side of the vehicle may be blinked. .

  As a result, when the vehicle width lamp 10 (or the headlamp (headlight)) is lit by the ON signal generated by turning on the light switch 9 (time zone signal generating means), it is output from the speaker 2. Even if the volume of the warning sound is reduced or the warning sound is not output, it is possible to maintain the alert to the rear of the vehicle, and the light switch 9 (time zone signal generating means) is turned off and the vehicle width Even when the lamp 10 (or the headlamp (headlight)) is turned off, if the shift lever of the speed change operation device 7 is switched to the R range (reverse gear), the left and right turns arranged in the vehicle You may comprise so that a signal may blink.

Next, a vehicle alarm device according to a second embodiment of the present invention will be described.
The vehicle alarm device according to the present embodiment is attached to a vehicle such as an automobile as in the first embodiment, and outputs a warning sound toward the outside of the vehicle when the vehicle moves backward (back), thereby moving backward. As shown in FIG. 2, a shift operation means 7 mounted on the vehicle and a light switch 9 (time zone signal generation means) capable of turning on / off the vehicle width lamp 10 are provided. And an alarm device main body 1 electrically connected to each other. In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment, and those description is abbreviate | omitted.

  The sound source circuit 3 according to the present embodiment has an IC in which a plurality of predetermined alarm sounds are stored in advance, and the stored alarm sound can be selectively output from the speaker 2 when an electric signal is input. Has been. As in the first embodiment, the alarm sound according to the present embodiment is composed of a melody sound having a predetermined rhythm, for example, an electronic sound composed of general-purpose music or a dedicated music rhythm.

  Further, the alarm sound according to the present embodiment has a plurality of melody sounds (alarm sound A, alarm sound B, alarm sound C) having different rhythms, and any one of the melody sounds is selected. Optional selection is possible. That is, the sound source circuit 3 is connected to a selection means 3a that can be operated by the operator, and an alarm sound selected by the selection means 3a (any one of the alarm sound A, the alarm sound B, and the alarm sound C). Is output from the speaker 2.

  Thus, in the time zone in which the vehicle width lamp 10 (or headlight) is turned on (that is, at night or early morning), if the shift lever of the shift operation means 7 is operated in the R range (reverse speed), the volume is lower than the set volume. Thus, the alarm sound selected by the selection means 3a is output from the speaker 2 or the alarm sound is not output from the speaker 2. It should be noted that two or more types of alarm sounds can be selected, and four or more types of alarm sounds may be used in addition to the three types of alarm sounds as in the present embodiment.

  According to the embodiment, the light switch 9 (time zone signal generating means) that can generate a signal (ON signal) according to the time zone, and the alarm according to the time zone based on the signal generated by the light switch 9 Since the attenuation circuit 4 (volume adjustment means) capable of adjusting the sound volume is provided, the alarm sound can be automatically adjusted according to the time zone to suppress nighttime or early morning noise. In addition, since the attenuation circuit 4 (volume adjusting unit) according to the present embodiment reduces the volume of the alarm sound or does not output the alarm sound when the time zone is night or early morning, the noise at night or early morning is more sure. Can be suppressed.

  In particular, the alarm sound according to the present embodiment has a plurality of melody sounds having different rhythms, and any one of the melody sounds can be arbitrarily selected. An alarm sound can be arbitrarily output, and a more comfortable alarm sound can be obtained as compared with a buzzer or the like. In this embodiment, a plurality of types of melody sounds can be arbitrarily selected. However, in addition to the melody sounds, a buzzer, a voice, or the like may be selectable.

Next, a vehicle alarm device according to a third embodiment of the present invention will be described.
The vehicle alarm device according to the present embodiment is attached to a vehicle such as an automobile as in the first embodiment, and outputs a warning sound toward the outside of the vehicle when the vehicle moves backward (back), thereby moving backward. As shown in FIG. 3, a light / dark sensor 11 for on / off control of a speed change operation means 7 mounted on the vehicle and a vehicle width lamp 10 (or headlight) of the vehicle, as shown in FIG. The alarm device main body 1 is electrically connected to the (time zone signal generating means). In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment, and those description is abbreviate | omitted.

  The light / dark sensor 11 according to the present embodiment constitutes a time zone signal generating unit capable of generating a signal corresponding to a time zone (a signal corresponding to the surrounding darkness). The light / dark sensor 11 is for detecting the ambient brightness (darkness) and controlling on / off of the vehicle width lamp 10 (or headlamp) mounted on the vehicle. It is composed of a phototransistor or the like that can change the output voltage accordingly. Specifically, when the surroundings become dark, the light / dark sensor 11 detects the darkness and automatically turns on the vehicle width lamp 10 (or the headlight), and when the surroundings become bright, the brightness becomes dark and dark. The sensor 11 detects and the vehicle width lamp 10 (or the headlamp) is automatically turned off. Reference numeral 13 in the figure denotes an automatic light control device for automatically turning on or off the vehicle width lamp 10 (or headlight) based on the darkness (brightness) detected by the light / dark sensor 11. ing.

  Thus, in the time zone in which the vehicle width lamp 10 (or headlight) is turned on (that is, at night or early morning), the light / dark sensor 11 detects the darkness and transmits an electric signal to the attenuation circuit 4, so that the speed change operation is performed. When the shift lever of the means 7 is operated to the R range (reverse speed), the alarm sound is output from the speaker 2 at a volume lower than the set volume, or the alarm sound is not output from the speaker 2. The light / dark sensor 11 can detect the darkness in a plurality of stages, and the sound volume of the warning sound is varied according to the darkness stage (for example, the sound volume of the warning sound is reduced when it is darker). You may comprise.

  According to the embodiment, based on the signal generated by the light / dark sensor 11 (time band signal generating means) that can generate a signal according to the time zone and the light / dark sensor 11, the volume of the alarm sound is set according to the time zone. Since the adjustable attenuation circuit 4 (volume adjusting means) is provided, it is possible to automatically adjust the alarm sound according to the time zone to suppress the noise at night or early morning. In addition, since the attenuation circuit 4 (volume adjusting unit) according to the present embodiment reduces the volume of the alarm sound or does not output the alarm sound when the time zone is night or early morning, the noise at night or early morning is more sure. Can be suppressed.

  In particular, the time zone signal generating means according to the present embodiment comprises a light / dark sensor 11 for detecting the ambient brightness and controlling on / off of the vehicle width lamp 10 (or headlight) mounted on the vehicle. Therefore, it is possible to suppress noise caused by an alarm sound in a time zone where the surroundings are dark. In addition to the light / dark sensor 11, an ON signal from the light switch 9 as in the first embodiment is input to the attenuation circuit 4, and the alarm sound output from the speaker 2 is reduced or reduced when the time zone is nighttime or early morning. The alarm sound may not be output from the speaker 2.

Next, a vehicle alarm device according to a fourth embodiment of the present invention will be described.
The vehicle alarm device according to the present embodiment is attached to a vehicle such as an automobile as in the first embodiment, and outputs a warning sound toward the outside of the vehicle when the vehicle moves backward (back), thereby moving backward. As shown in FIG. 4, the alarm device main body 1 electrically connected to the shift operation means 7 mounted on the vehicle and the timepiece 12 (time zone signal generation means) is provided. It is configured. In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment, and those description is abbreviate | omitted.

  The timepiece 12 according to the present embodiment constitutes a time zone signal generating means capable of generating a signal corresponding to a time zone (specifically, time). The timepiece 12 detects the current time, generates a signal corresponding to a time zone during a predetermined time (for example, from a predetermined time in the evening to a predetermined time in the morning), and the speaker 2 according to the time zone. Is configured to reduce the volume of the alarm sound from or not output the alarm sound. Note that the timepiece 12 is not limited to the one mounted on the vehicle as in the present embodiment, and may be one provided in the alarm device main body 1, for example. The clock 12 may be a radio clock capable of automatically correcting the time by receiving a radio wave accompanied by a time signal transmitted from the ground station, and a geographic signal transmitted from a satellite (GPS) It may be a timepiece that can automatically correct the time lag associated with the time difference by receiving the accompanying radio wave.

  Thus, in the nighttime or early morning time period (nighttime or early morning time), an electric signal is transmitted from the clock 12 to the attenuation circuit 4, and therefore, when the shift lever of the shift operation means 7 is operated to the R range (reverse speed). The alarm sound is output from the speaker 2 at a volume lower than the set volume, or the alarm sound is not output from the speaker 2. Note that the alarm sound volume may be changed stepwise in accordance with the time in the night or early morning time zone (for example, the sound volume of the alarm sound is reduced in the late night from the evening).

  According to the above embodiment, the volume of the alarm sound can be adjusted according to the time zone based on the clock 12 (time zone signal generating means) that can generate a signal according to the time zone and the signal generated by the clock 12 Since the noise reduction circuit 4 (volume adjusting means) is provided, it is possible to automatically adjust the alarm sound according to the time zone to suppress nighttime or early morning noise. In addition, since the attenuation circuit 4 (volume adjusting unit) according to the present embodiment reduces the volume of the alarm sound or does not output the alarm sound when the time zone is night or early morning, the noise at night or early morning is more sure. Can be suppressed.

  In particular, since the time zone signal generating means according to the present embodiment is composed of the clock 12, the time zone at night or early morning can be grasped based on the detected time, and noise caused by an alarm sound is suppressed in that time zone. can do. As in the second embodiment, the sound source circuit 3 stores a plurality of types of alarm sounds, one of which is automatically selected according to the time and output from the speaker 2. Good.

  According to the first to fourth embodiments, the alarm device body 1 is attached to the vehicle, and the first input wiring L1 and the second input wiring L2 are connected to the vehicle side (wiring La, Lb, time zone signal generating means, etc.). By doing so, the vehicle alarm device according to the present invention can be easily attached to existing vehicles that do not output alarm sound (not only large vehicles but all vehicles including small vehicles).

  Although the present embodiment has been described above, the present invention is not limited to this. For example, the volume adjustment unit is generated by a time zone signal generation unit including the light switch 9, the light / dark sensor 11, the clock 12, or the like. It is sufficient that the volume of the alarm sound can be adjusted according to the time zone based on the received signal. For example, an amplifier circuit that increases the voltage of the electric signal input to the sound source circuit 3 instead of the attenuation circuit 4 is used. At the same time, when the time zone is daytime, the alarm sound output from the speaker 2 may be set larger than the set volume. That is, it is sufficient to relatively reduce the volume of the alarm sound at night or early morning than when the time is daytime.

  Further, the time zone signal generation means is sufficient if it can generate a signal according to the time zone, and may be another general-purpose sensor instead of the light switch 9, the light / dark sensor 11 or the clock 12. Furthermore, in the present embodiment, the alarm device body 1 is configured by an electric circuit, but may be configured to automatically control the volume of the alarm sound according to the time zone by a microcomputer or the like. In the present embodiment, the power source for outputting the alarm sound from the speaker 2 is a battery mounted on the vehicle. However, a battery such as a dry battery may be attached to the alarm device body 1 as a power source.

  Vehicle having time zone signal generating means capable of generating a signal according to a time zone, and a volume adjusting means capable of adjusting a volume of an alarm sound according to the time zone based on the signal generated by the signal generating means As long as the alarm device is used, it can also be applied to devices with other functions added.

DESCRIPTION OF SYMBOLS 1 Alarm apparatus main body 2 Speaker 3 Sound source circuit 4 Attenuation circuit 5 Drive circuit 6 Operation switch 7 Shift operation means 8 Backlight 9 Light switch 10 Width light 11 Light / darkness sensor 12 Clock 13 Auto light control device

Claims (7)

In a vehicle alarm device capable of outputting an alarm sound toward the outside of the vehicle when the vehicle moves backward,
A time zone signal generating means capable of generating a signal according to the time zone;
Based on the signal generated by the signal generating means, volume adjusting means capable of adjusting the volume of the alarm sound according to the time zone;
An alarm device for a vehicle, comprising:   2. The vehicle alarm device according to claim 1, wherein when the time zone is nighttime or early morning, the volume adjusting unit reduces the volume of the warning sound or does not output the warning sound.   The vehicle alarm device according to claim 1 or 2, wherein the time zone signal generation means is capable of generating an ON signal of a vehicle width lamp or a headlamp mounted on the vehicle.   2. The time zone signal generating means comprises a light / dark sensor for detecting the ambient brightness and controlling on / off of a vehicle width lamp or a headlamp mounted on the vehicle. Item 3. The vehicle alarm device according to Item 2.   The vehicle alarm device according to claim 1 or 2, wherein the time zone signal generating means comprises a clock.   The vehicular alarm device according to any one of claims 1 to 5, wherein the alarm sound is a melody sound having a predetermined rhythm.   The vehicle warning device according to claim 6, wherein the warning sound includes a plurality of melody sounds having different rhythms, and any one of the melody sounds can be arbitrarily selected.

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