JP2000036095A - Acoustic device for traffic signal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop an acoustic device provided in a signal device for pedestrians at night. SOLUTION: This acoustic device for a traffic signal device provided with an acoustic means for generating the sound of prescribed contents when the lighting of advance indication for indicating advance to the pedestrians is started is composed of a detection means for detecting a flickering lighting state appearing after the lighting of the advance indication, a measurement means for measuring the time of the detected flickering lighting state, and a stop means for stopping the generation of the sound of the prescribed contents by the acoustic means S when the measured time of the flickering lighting state is more than prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic signal sound device provided as an additional device for a pedestrian traffic signal.

[0002]

2. Description of the Related Art FIG. 3 is a schematic diagram of a pedestrian traffic signal (hereinafter, referred to as a "pedestrian signal") provided with a conventional acoustic device as an additional device.

[0003] The pedestrian traffic light 1 is provided with a red stop sign lamp 1PR indicating a stop sign for a pedestrian and a blue progress sign lamp 1PG indicating a proceed sign. Each of these lamps 1PR and 1PG is configured to be controlled by a traffic signal controller (not shown) that also controls the vehicle traffic signal.

[0004] A traffic signal sound device (hereinafter referred to as "sound device") a 'has a voice synthesizing circuit 10 for generating a voice having a predetermined content such as "blue. It is configured to be able to announce the synthesized voice from the speaker S via the amplifier circuit 11.

In FIG. 3, reference numeral 12 denotes a power supply for driving the acoustic device a ', and reference numeral 13 denotes a PG detection circuit for detecting a lighting state of a pedestrian progress indicator lamp 1PG. .

In the conventional sound device a 'having the above structure, when the pedestrian progress indicator lamp 1PG is turned on,
The PG detection circuit 13 is turned on. Therefore, the power is supplied from the power supply 12 to the voice synthesis circuit 10, the voice synthesis circuit 10 is driven, and it is announced that the pedestrian traffic light 1 has turned blue via the speaker S. For this reason, guideability can be improved especially for visually impaired pedestrians.

[0007]

However, the above-mentioned conventional sound device is configured to announce a predetermined content when a lamp indicating the progress of a pedestrian is turned on, so that the sound device can be used at night. The contents were announced, and there was a drawback that the residents near the location of the pedestrian signal became noise.

In order to eliminate such a drawback, it is conceivable to install a 24-hour timer in the audio device and stop the announcement at night using the timer. In addition to an increase in power, maintenance of the timer is required, resulting in a new problem of high cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a lighting device that indicates the progress of a pedestrian in a flickering state during a day. It is an object of the present invention to provide an audio device capable of canceling an announcement at night with a simple configuration utilizing a difference between the announcement at night and the night.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, an acoustic device according to the present invention provides a sound device having a predetermined content when lighting of a progress indication indicating a progress to a pedestrian is started. A sound device for a traffic signal having sound means for generating a signal, a detecting means for detecting a blinking lighting state appearing after lighting of the progress indication, a measuring means for measuring a time of the detected blinking lighting state, And stopping means for stopping generation of sound having predetermined content by the sound means when the time of the blinking lighting state is equal to or longer than a predetermined time.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an acoustic device a according to an embodiment. Note that the same components as those of the conventional device of FIG.

First, starting from the same components as in the prior art, the pedestrian signal 1 is provided with a red stop sign lamp 1PR indicating a stop sign and a blue stop sign indicating a progress sign for a pedestrian. The vehicle includes a lighting device 1PG for displaying the progress, and each of the lighting devices 1PR and 1PG is configured to be controlled by a traffic signal controller that also controls a vehicle traffic signal (not shown).

The audio device a includes a voice synthesizing circuit 10 for generating a voice having a predetermined content such as, for example, "It has turned blue. Please cross over." It is configured to be able to announce the synthesized voice.

The power supply 12 is configured to be used as a power supply for driving the acoustic device a and to be used as a drive power supply for each device described later via a smoothing circuit C. The PG detection circuit 13 is a detection circuit that detects the lighting state of the pedestrian progress indicator lamp 1PG.

In the drawing, reference numeral 1 denotes a counter, and a lamp 1PG
It is configured to be able to detect the number of times of blinking lighting (flicker). Then, when the counter 1 starts counting (measuring) the number of times of blinking and lighting, the latching relay 3 can be turned on via the blinking detection circuit 2.

In FIG. 1, reference numeral 4 denotes a comparator for comparing the number of times of blinking counted by the counter 1 with a predetermined number of times of blinking set by the setting unit 5, and the number of times of blinking counted by the counter 1 is set. When the number of times set by the container 5 is exceeded, the latching relay 3 can be turned off.

The set value in the setting unit 5 is determined so that the number of times of flashing of the lamp 1PG in the daytime and the number of times of flashing in the nighttime can be distinguished from each other as shown by a in the time chart of FIG.

That is, when the number of times of flashing of the lamp 1PG during the daytime is n times, the number of times of flashing at night is n +
Since it is determined to be α, the setting value of the setting device 5 is set to n times of the number of times of blinking lighting in the daytime. Therefore, when the number of times of blinking exceeds n times, the comparator 4 sends the latching relay 3 to the latching relay 3.
Is output.

In FIG. 1, reference numeral 3a denotes an A of the latching relay 3.
It is a contact that is configured so that the amplifier circuit 11 and the speaker S can be connected when the latching relay 3 is ON, and the amplifier circuit 11 and the speaker S can be disconnected when the latching relay 3 is OFF.

In the acoustic device a having the above configuration, as shown in the time chart of FIG. 2, when the light 1PG indicating the progress of the pedestrian is turned on, the output of the comparator 4 is not changed until the output of the comparator 4 is transmitted. That is, in the daytime, the PG detection circuit 13 is turned on. Accordingly, the power is supplied from the power supply 12 to the voice synthesizing circuit 10 and the voice synthesizing circuit 10 is driven, and it is announced that the pedestrian traffic light 1 has turned blue via the contact 3a and the speaker S. For this reason, guideability can be improved especially for visually impaired pedestrians.

However, if the number of times the lamp 1PG indicating the progress of the pedestrian blinks and turns on increases at night, a signal is output from the comparator 4 so as to turn off the latching relay 3. The contact of the latching relay 3 is O
The output becomes the FF, the output of the voice synthesis circuit 10 is cut off, and the speaker S is silent (see (silent) in FIG. 2). Thereby, it is possible to effectively prevent the announcement from the speaker S from becoming noise at night.

Furthermore, the announcement from the speaker S is
Since the pedestrian signal 1 is transmitted through a contact that is turned on and off based on the flashing lighting device 1PG, the PG detection circuit 13 is erroneously connected to the lighting device 1PR that indicates a stop to a pedestrian. In this case, since the blinking detector 2 does not output, the contact 3a is kept OFF, and fail-safe operation can be achieved.

In the above example, the racking relay 3
Is controlled by the number of times of flashing of the lamp 1PG, but this number corresponds to the time of the flashing state of the present invention.

[0024]

According to the present invention, there is provided an acoustic apparatus comprising: a detecting means for detecting a blinking lighting state appearing after a progress indication lighting;
Measuring means for measuring the time of the detected blinking lighting state;
When the measured time of the blinking lighting state is equal to or longer than the predetermined time, the sounding means includes a stopping means for stopping the generation of sound of predetermined content by the sound means, so that at night when the blinking lighting time is long, the announcement may be stopped. it can.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an acoustic device according to an embodiment of the present invention.

FIG. 2 is a time chart.

FIG. 3 is a schematic configuration diagram of a conventional acoustic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pedestrian traffic signal (pedestrian signal) 1PR Light for stop indication 1PG Light for progress indication 2 Flashing detector 3 Latching relay 3a Contact 4 Comparator 5 Setting device 10 Voice synthesis circuit 11 Amplifier circuit ( AMP) 12 Power supply S Speaker a Sound device for traffic signal (sound device)

Claims (1)

[Claims] 1. A traffic signal sound apparatus including sound means for generating sound having predetermined contents when lighting of a progress indication indicating a progress to a pedestrian is started. Detecting means for detecting a flickering lighting state appearing after lighting; measuring means for measuring a time of the detected flickering lighting state; and determining a predetermined time by the sound means when the measured time of the flickering lighting state is longer than a predetermined time. A sound device for a traffic signal, comprising: a stopping means for stopping the generation of the sound having the content of (1).