JPWO2009050832A1 - Alarm sound generator - Google Patents

Abstract

The sound of two spiral horns, a high tone horn and a low tone horn, should be pronounced as a single unit. A power supply circuit (1) that receives the output of the battery (3) and outputs a drive current, and an audio output that outputs a synthesized sound of the treble horn and the bass horn of the spiral horn that is stored in advance by receiving the drive current A circuit unit (4), an amplification amplifier circuit unit (5) that receives the drive current and amplifies the synthesized speech output from the audio output circuit unit (4), and the audio amplified by the amplification amplifier circuit unit (5) And a speaker (9) that emits sound to the outside.

Description

  The present invention belongs to the technical field of alarm sound generating devices mounted on vehicles such as automobiles.

Today, vehicles are equipped with vehicle horns as alarm sound generating devices, and as such vehicle horns, flat horns that produce a cymbal sound by striking a diaphragm against a resonance plate (for example, Patent Document 1) and a spiral horn (see, for example, Patent Document 2) that is provided with a spiral air chamber (curling) instead of a resonance plate and that vibrates the air in the air chamber to generate sound are known. . The flat horn has excellent directivity and a sharp sound. On the other hand, the spiral horn has a characteristic that the sound quality is gentle because it is sounded by the principle of a wind instrument.
By the way, as long as these horns satisfy the safety standards of road transport vehicles, there are no restrictions on the structure or quantity, and flat horns or spiral horns may be used, and one or two attachments may be used. ing. Small cars and low-priced cars are equipped with a single flat horn, and cars and high-end cars with ample mounting space often have two swirl horns. This is only one horn. There is an advantage in sound quality (sound color) and sound pressure compared to the case of mounting, so there is a tendency to attach two high-end cars, and a horn with a gentle sound quality is often attached as a horn.
JP 2000-318517 A JP-A-11-143475

  However, the spiral horn is large because of the curling, and when two of these are installed, there is a problem that a sufficient amount of installation space must be secured, and the power consumption is doubled. There is a problem to be solved by the present invention.

The present invention was created with the object of solving these problems in view of the above circumstances, and the invention of claim 1 is an alarm that sounds an alarm sound based on a power supply mounted on a vehicle. A sound generator, wherein the alarm sound generator outputs a synthesized sound of a power supply circuit that receives the power output and outputs a drive current, and a treble horn and a bass horn that are stored in advance by receiving the drive current. An audio output circuit unit for outputting, an amplification amplifier circuit unit for amplifying the synthesized sound output from the audio output circuit unit in response to the drive current, and a speaker for sounding the audio amplified by the amplification amplifier circuit unit to the outside An alarm sound generating device characterized in that the alarm sound generating device is provided.
According to a second aspect of the present invention, the audio output circuit unit stores a plurality of types of synthesized sounds of the high tone horn and the low tone horn, and the audio output circuit unit is selected to be connected to the audio output circuit unit. 2. The alarm sound generating apparatus according to claim 1, wherein an arbitrary synthesized voice is selected from the plurality of stored synthesized voices by a switch selection operation and output.
The invention according to claim 3 is characterized in that the audio output circuit unit is configured to output a synthesized voice having a volume level that differs depending on a selection operation of a volume switching switch connected to the audio output circuit unit. The alarm sound generator according to claim 1 or 2.
According to a fourth aspect of the present invention, the power supply circuit includes a step-up converter, and the amplification amplifier circuit section and the speaker are driven at a constant voltage. Is an alarm sound generator.
According to a fifth aspect of the present invention, the alarm circuit according to any one of the first to third aspects is characterized in that the power supply circuit is provided with a step-down converter and can be used for a vehicle equipped with a 24V power supply. Generator.
According to a sixth aspect of the present invention, in the alarm sound generating device according to the first aspect, the power source is an AC generator, and the power source circuit includes an AC / DC converter.
According to a seventh aspect of the present invention, in the sound output circuit unit, in addition to the synthesized sound of the horn, another warning sound is registered. The warning sound according to any one of the first to sixth aspects Generator.

According to the first aspect of the present invention, a synthesized voice obtained by synthesizing the voices of both the high-pitched horn and the low-pitched horn is produced from the speaker. The power supply circuit used in the circuit, the voice output circuit unit, the amplification The amplifier circuit unit and the speaker can be integrated as a unitary unit, so that it can be handled in the same way as a single horn, the installation space is limited, and the installation work is simplified and the sound is reduced. The pressure can be maintained at a level equivalent to that of a normal horn by increasing the output of the amplification amplifier circuit unit and the speaker.
With the invention according to claim 2, the added value can be increased since one device can select the timbres of a plurality of types of stored horns.
According to the third aspect of the present invention, it is possible to select one device having different sound pressures with a single device, thereby increasing the added value.
According to the fourth aspect of the present invention, even if there is a fluctuation in the power source, the synthesized voice can be pronounced without any fluctuation in the sound pressure.
By setting it as invention of Claim 5, it can attach also to the vehicle of 24V use, and a use range expands.
By setting it as the invention of claim 6, it can be mounted even in a vehicle not equipped with a power source.
According to the seventh aspect of the present invention, alarm sound other than the synthesized sound of the horn can be generated together and the alarm function is improved.

It is a circuit diagram of an alarm sound generating device of a first embodiment. It is a circuit diagram of the alarm sound generator of 2nd embodiment. It is a circuit diagram of the warning sound generator of 3rd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply circuit 2 Horn switch 3 Battery 4 Audio | voice output circuit part 5 Amplification amplifier circuit part 6, 7, 8 Selection switch 9 Speaker 10 AC generator

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block circuit diagram showing a first embodiment, in which 1 is a power circuit, and the power circuit 1 is connected to a battery (power source) via a horn switch 2 (or an in-vehicle horn relay). ) When the horn switch is turned on, the necessary power supply is set.

When the power supply circuit 1 is turned on, an audio output circuit unit that stores a high-frequency horn, a low-frequency horn, and a synthesized sound (mixed sound) of two types of spiral horns (which may be flat horns) (Audio IC) 4 and the amplification amplifier circuit unit 5 are supplied with power to operate them. The audio output circuit unit 4 is connected to first to third selection switches 6, 7, 8. ing. The audio output circuit unit 4 can select the volume level by turning the first selection switch 6 on and off, and by turning on the second selection switch 7, one of the above-described types of spiral horns is synthesized. The synthesized voice of the other spiral horn is selected by turning ON the third selection switch 8, and the selected voice is output to the amplification amplifier circuit unit 5 with the selected volume as the selected volume. .
The amplification amplifier circuit unit 5 is configured to amplify the sound output from the sound output circuit unit 4 and generate the sound through the speaker 9.
In addition, the power supply circuit 1, the audio output circuit unit 4, the amplification amplifier circuit unit 5, and the speaker 9 are incorporated as a unitary unit.

  In the first embodiment of the present invention configured as described above, the horn switch 2 is turned on by operating the selection switches 6, 7, 8 on and off based on the desire of the user who owns the vehicle. When operated, the selected synthesized voice is sounded from the speaker 9 as the selected volume.

  In the case where the present invention is implemented as described above, a synthesized voice obtained by synthesizing the voices of both the high-pitched horn and the low-pitched horn set as the spiral horn is generated from the speaker 9 by turning on the horn switch 2. However, as described above, since the power supply circuit 1, the audio output circuit unit 4, the amplification amplifier circuit unit 5, and the speaker 9 are incorporated as a single unit, two swirl horns for high and low sounds are provided. There is no need to provide a single horn, so that the installation space is narrow, the installation work is simplified, and the sound amplifier is also provided with the amplification amplifier circuit unit 5 and the speaker 9. By increasing the output, it can be maintained at the same level as the spiral horn.

In addition, in this case, synthesized voices of two types of spiral horns are stored, and one of them can be selected as necessary, so that it corresponds to the user's preference.
Further, in a low noise type vehicle such as a hybrid vehicle, since the running sound is quiet, it is possible to make a gentle warning by selecting a weak volume for alerting the pedestrian.

Of course, the present invention is not limited to the first embodiment, and the number of synthesized voices that can be selected is three or more, and the volume is strong, medium, or weak. It can be set to a plurality of things. Furthermore, as a synthesized voice to be stored, not only the synthesized voice of the spiral horn, but also the synthesized voice of the flat horn, as well as the synthesized voice of these horns, "the car passes." It is also possible to store a voice of a person such as “Please note.” And to select a voice other than the horn if necessary.
Furthermore, for example, as in the second embodiment shown in FIG. 2, it can be simplified without a selection switch. In other words, in this device, the voice output circuit unit 4 stores the synthesized voice of one kind of spiral horn, and the volume cannot be selected. The circuit unit 4 has a small storage capacity (storage capacity) and does not require an internal switch.

  Further, in the first and second embodiments, if the drive voltage of the audio output circuit unit 4 and the amplification amplifier circuit unit 5 is set to a constant voltage as the power supply circuit 1 including a boost converter circuit, the battery voltage Even when the value fluctuates, a constant sound pressure can be maintained. Furthermore, if the power supply circuit 1 is provided with a step-down converter, the 24V specification can be achieved.

  Furthermore, in the third embodiment shown in FIG. 3, in the case of a non-battery-equipped vehicle in a motorcycle, the horn is driven by an alternating current generated by an AC generator, and the power source is turned on there. If the AC generator 10 is used and the power supply circuit 1 includes an AC / DC converter, the tone of the spiral horn can be generated even in a motorcycle.

  INDUSTRIAL APPLICABILITY The present invention is useful for an alarm sound generating device mounted on a vehicle such as an automobile, for example, a vehicle horn, and can be used only in a narrow installation space if each circuit unit and speaker are incorporated as a unitary unit. In addition, the installation work can be simplified, and the sound pressure equivalent to that of a normal horn can be achieved by increasing the output of a speaker, etc. Furthermore, by providing two or more types of horns and selection switches, synthesized speech And the volume can be selected and can be adapted to the user's preference.

Claims (7)

  An alarm sound generating device that generates an alarm sound based on a power supply mounted on a vehicle, the alarm sound generating device receiving a power supply circuit that receives the power output and outputs a drive current; A voice output circuit unit that outputs a synthesized voice of a treble horn and a bass horn stored in advance, an amplification amplifier circuit unit that receives the drive current and amplifies the synthesized voice output from the voice output circuit unit, and the amplification An alarm sound generating device comprising: a speaker for sounding sound amplified by an amplifier circuit portion to the outside.   The voice output circuit unit stores a plurality of types of synthesized voices of the high tone horn and the low tone horn, and the voice output circuit unit is stored by the selection operation of a selection switch connected to the voice output circuit unit. 2. The alarm sound generating apparatus according to claim 1, wherein an arbitrary synthesized voice is selected and output from a plurality of synthesized voices.   3. The voice output circuit unit is configured to output synthesized voices having different volumes depending on a selection operation of a volume switch connected to the voice output circuit unit. Alarm sound generator.   4. The alarm sound generating device according to claim 1, wherein the power supply circuit includes a boost converter, and the amplification amplifier circuit section and the speaker are driven at a constant voltage.   4. The alarm sound generator according to claim 1, wherein the power supply circuit includes a step-down converter and can be used for a vehicle equipped with a 24V power supply.   2. The alarm sound generator according to claim 1, wherein the power source is an AC generator, and the power source circuit includes an AC / DC converter.   The alarm output device according to any one of claims 1 to 6, wherein, in addition to the synthesized sound of the horn, another alarm sound is registered in the sound output circuit unit.

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