JP2811164B2 - Pedestrian waiting time display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedestrian traffic signal light which is arranged side by side so that the remaining waiting time of the pedestrian traffic signal in a crossing-prohibited signal light can be displayed by reducing the number of lights of the indicator light. A pedestrian waiting time display with a signal generation device that generates an imitation sound or human voice for the visually impaired while switching to the crossing permission signal light as needed or while the crossing permission signal light is on It concerns the device.

[0002]

2. Description of the Related Art Conventionally, as this type of pedestrian waiting time display device, for example, a light signal for turning on or off a crossing permission signal light or a crossing prohibition signal light output from a traffic signal control device used at an intersection is received. Then, the cycle is measured, and the waiting time of the next crossing prohibition signal light corresponding to the measured cycle is determined. The waiting time during the lighting of the crossing prohibition signal light is the time from the start of lighting of the crossing prohibition signal light to the start of lighting of the crossing permission signal light, and it is measured and stored based on the previous lighting cycle of both signal lights. If there is, when the change is detected, the waiting time of the next cycle is corrected. Also, this waiting time is 2 hours for the entire time.
Equally divided into the above plural times (usually 8 to 10 equal parts), and all the lights are turned on at the same time as the start of the crossing prohibition signal light, and a plurality of indicator lights for pedestrian waiting time display arranged in parallel. ,
The display lamps are turned off one by one each time a predetermined one time period divided into a plurality of times elapses, and all the indicator lights are turned off when the crossing prohibition signal light is turned off. And the power supply required for the pedestrian traffic light and the pedestrian waiting time display device is as follows:
Using a commercial AC power supply, from one dedicated control device for traffic signal lights arranged at one intersection to a plurality of pedestrian waiting time display devices installed at intersections via a master unit for pedestrian waiting time display devices It was structured to distribute.

[0003]

As described above, the conventional pedestrian waiting time display device is provided from one dedicated traffic signal control device installed at one intersection via the master device for the pedestrian waiting time display device. In addition, since a commercial AC power source is distributed and applied to a plurality of waiting time display devices installed across an intersection road, and a required signal is input to operate the walking device, the walking device connected to the traffic signal control device is used. Wiring work between the master unit for the waiting time display device and each waiting time display device must be performed across the road, which not only requires installation work and maintenance work, but also increases construction costs. Had a problem.

The present invention has been made to solve the above-mentioned problem, and a power source and an input signal necessary for the operation of each pedestrian waiting time display device are provided by a pedestrian traffic light provided with the pedestrian waiting time display device. By constructing it directly, there is no need to install a master unit for the pedestrian waiting time display device, and wiring work across the road between each pedestrian waiting time display device and the traffic signal control device is required. It is an object of the present invention to provide a pedestrian waiting time display device which can be installed with extremely simple installation work and consumes less power.

[0005]

In order to achieve the above-mentioned object, a pedestrian waiting time signal display device according to the present invention has a plurality of display lights, and all the display lights are sequentially turned off one by one from the lighting state. Turn on the lights to reduce the number of lights, and when the pedestrian traffic lights next to each other turn off the crossing-prohibited signal lights, the last light will be turned off and the road will be crossed. In the waiting time display device configured to display the remaining waiting time until the next time the traversing permission signal light is turned on during the lighting time of the traversing prohibition signal light for the pedestrian by decreasing the number of lighting of the indicator lights, the plurality of indicator lights The remaining waiting time indicator configured as described above, and the lighting signal of the previous cycle of the cross prohibition signal light in the lamp output signal output from the traffic signal control device is inputted, and the lighting time of the cross prohibition signal light is measured and stored. Measurement result A control circuit that divides the waiting time of the next-period traversing prohibition signal light for each predetermined time period based on the lapse of time, and reduces the number of lights of the indicator lights according to the lapse of the divided waiting time; A power supply circuit is used as a power supply to the signal light for the remaining waiting time indicator and a power supply for storing a capacitor for a holding power supply of the control circuit when the crossing permission signal light is turned on. It is assumed that.

Further, the pedestrian waiting time signal display device according to the present invention has a plurality of display lights, and sequentially turns off one light at a time from the lighting state of all the display lights to reduce the number of lighted display lights. , The last indicator light is extinguished when the crossing prohibition signal light of the juxtaposed pedestrian traffic light is extinguished,
In a waiting time display device configured to display the remaining waiting time until the next crossing permission signal light is turned on during the lighting time of the crossing prohibition signal light for the pedestrian who is going to cross the road by decreasing the number of lights of the indicator lights. A remaining waiting time indicator comprising the plurality of indicator lights, and a lighting signal of the previous cycle of the crossing prohibition signal light in the lamp output signal output from the traffic signal control device, to set the lighting time of the crossing prohibition signal light. While measuring and storing, based on the measurement result, the waiting time of the traverse prohibition signal light in the next cycle is divided every predetermined time, and the lighting number of the indicator light is reduced according to the lapse of the divided waiting time. A control circuit for causing the power supply to the traversing prohibition signal light to be used as a power source for the remaining waiting time indicator, and a control power supply for the control circuit when the traversing permission signal light is turned on. A first power supply circuit for storing electric capacitors, is obtained by varying like the second power supply circuit and the structure provided to the power supply of the signal sound generating means supply power to said transverse permission signal lights.

[0007]

[Action]

(1) Simultaneously with turning on of the pedestrian traffic signal crossing prohibition signal light (hereinafter referred to as "red signal light") by the above configuration, all the indicator lights configured as the remaining waiting time indicator of the pedestrian waiting time display device are turned on, During the switching time until the traversing permission signal light (hereinafter referred to as “green signal light”) in the next cycle is turned on, that is, within the lighting time of the red signal light, the indicator light is turned off one by one in accordance with a predetermined elapsed time. The remaining waiting time of the red light lighting time is displayed according to the number of lights. (2) The waiting time of the red signal lamp in the previous cycle in the lamp output signal output from the traffic signal control device is input to the control circuit of the waiting time display device, and the lighting time of the red signal lamp in the previous cycle is measured and stored. Based on the measurement result, the waiting time of the red signal lamp in the next cycle is divided into predetermined time zones, and the number of lighting of the indicator light is reduced every time the divided time zone elapses, so that the red signal light is turned on from the time when the red signal light is turned on. Controls the pedestrian's waiting time until the signal light turns on. (3) In addition, since the power of the pedestrian waiting time display device is directly supplied from the pedestrian traffic light, it is possible to reduce the work such as the work of attaching the power line across the road from the independent power device or the traffic signal control device. In addition to this, it is possible to prevent a malfunction of displaying the waiting time when the green traffic light is turned on. (4) Further, since the power supply of the sound generator is obtained only from the power supply for the green signal light, malfunctions such as generating a sound signal when the red signal light is turned on can be prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a pedestrian waiting time display device according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a state in which a pedestrian waiting time display device according to the present invention is juxtaposed with a pedestrian traffic light, and FIG. 2 is a remaining waiting time display device included in the pedestrian waiting time display device. And FIG. 3 is a block diagram showing an example of a circuit configuration of the pedestrian waiting time display device. 1 and 2, the pedestrian waiting time display device 1 constitutes a remaining waiting time display 3 in which a plurality of display lights 2, 2,... According to the present embodiment, each of the indicator lamps 2, 2... Constituting the remaining waiting time indicator 3 is provided with a display window 5 having a substantially inverted triangular shape of the same shape on the surface of the housing 4. In general, each display window 5 has a red translucent color so that each of the display lights 2, 2... Displays a red light (corresponding to a lighted display color of a red traffic light of a pedestrian traffic light). And a plurality of light-emitting diodes (hereinafter, referred to as “LEDs”) 7 a, which are light sources of the indicator lights 2, 2. (See FIG. 2). The shape of each of the indicators 2, 2,... Constituting the remaining waiting time display 3 and the configuration of the light source are not limited to those in the above-described embodiment, and the respective surface shapes may be linear or rectangular. It is needless to say that the display area can be configured to have a shape in which the display area is varied to a large or small size, and a modified embodiment such as using a small incandescent lamp generally used as a light source can be employed.

In the present embodiment, the pedestrian waiting time display device 1 configured as described above is installed at the side of the road or the like as shown in FIG. Up and down 2 that protrude from the upper part of the strut 9 onto the road surface
The support fittings 11a, 1 between the support arms 10a, 10b
1b, it is fixedly supported and supplied with electric power from a commercial power supply common to the pedestrian traffic light 8, and is driven to light (so-called "embedded mounting", see FIG. 1).
The pedestrian waiting time display device 1 and the pedestrian traffic light 8
The method of mounting the support 9 on the support 9 is not limited to the above-described embodiment. For example, a so-called “suspension mounting” method (not shown) in which the support 9 is suspended from one support arm 10 that is horizontally mounted on the support 9. Also, one support arm 10 protrudes laterally from the lower end of the pillar of the pedestrian traffic light 8 independently installed at the upper end of the pillar 9, and walks side by side with the pedestrian traffic light 8 on the support arm 10. So-called “self-supporting mounting” method for supporting the waiting time display device 1 (not shown)
Of course, any mounting method can be selected.

The pedestrian waiting time display device 1 according to the present invention comprises:
As shown in FIG. 3, the pedestrian traffic signal light 8 includes a red signal light 1.
2, a first power supply circuit A for driving the pedestrian waiting time display device 1 when the crossing prohibition signal light is displayed.
Similarly, when the green traffic light 13, that is, the crossing permission traffic light is displayed on the pedestrian traffic light 8, the second power supply circuit B for driving the signal sound generator 14 for a visually impaired person described later is activated. It is structured to be attached. The first power supply circuit A and the second power supply circuit B are pedestrian traffic lights that are alternately switched on by power distributed and supplied from a traffic signal control device (not shown) installed on the roadside. 8 to be driven by directly receiving power supply from the red signal light 12 and the green signal light 13.
In this embodiment, the first power supply circuit A is a red light 12
And the second power supply circuit B is connected to the green light 1
The power is supplied from the three power supply 16.

The first power supply circuit A includes a power supply circuit 17 for the pedestrian waiting time display device 1 and an interface circuit 1.
8, a waiting time display control circuit 19 and an indicator light driving unit 20. The indicator light drive unit 20 turns on or extinguishes the LED display 7 having a plurality of LEDs 7a, 7a,... Further, the waiting time display control circuit 19 is for controlling the waiting time in the pedestrian waiting time display device 1 and measures the lighting time of the previous cycle of the red traffic light 12 output from the pedestrian traffic light 8. In addition to the storage, the waiting time of the red signal light 12 in the next cycle is divided into a plurality of predetermined time zones based on the measurement result, and the indicator light configured by the LED display 7 is used according to the elapse of the divided time zones. The waiting time of the pedestrian from the time when the red signal light 12 is turned on to the time when the green signal light 13 is turned on is controlled by decreasing the number of lights of 2, 2,. The waiting time display control circuit 19 is connected to a capacitor 22 which is built in the power supply circuit 17 and discharges the power charged while the red signal light 12 is turned on when the green signal light 13 is turned on. It is configured to hold 19 memories. In addition, the said capacitor 22 is
If desired, a structure in which power is supplied from the power supply 16 side of the green signal lamp 13 can be added.

The interface circuit 18 inputs a signal relating to the lighting time information of the red signal light 12 to the waiting time display control circuit 19 and is built in the indicator light driving unit 20 via the waiting time display control circuit 19. LED
An LED drive signal is output to the drive circuit 21. At the same time, the output power of the power supply circuit 17 is
It is supplied to the drive circuit 21 and the LED display 7 (indicator lamps 2,
2 ...) is displayed. The waiting time display control circuit 19 incorporates a timer and a memory (not shown), and receives the inputted red signal light 12 and blue signal light 1.
The time length (time information) of the previous cycle relating to the lighting and extinguishing of No. 3 is measured, and based on the measurement result, the lighting time lengths of the red signal light 12 and the green signal light 13 of the next cycle are measured and stored, and based on this measurement result. The configuration is such that the waiting time is output to the indicator light driving unit 20 as waiting time information of the next cycle. When the red signal light 12 is turned on, the indicator lights 2, 2,... Are first turned on, and the waiting time is divided into a plurality of times (eight times in this embodiment). 1
A signal is output so that the indicator lamps are turned off one by one each time the equal time elapses, and control is performed so as to reduce the number of lighting of the indicator lamps 2, 2,.

An example of a method for controlling the operation of the indicator lamps 2, 2,... Corresponding to the lighting of the red signal lamp 12 and the green signal lamp 13 and the change of the extinguishing time in the previous cycle and the next cycle will be described below. (1) The range of the time information (time length) of the lighting display of the red signal lamp 12 in the previous cycle is generally configured to be set to a minimum of 10 seconds to a maximum of 180 seconds, and a time exceeding the above range is set. For information, wait time display control circuit 1
9 is determined to be abnormal, and the time information of the next cycle is not stored in the memory. In the present invention, the waiting time of the previous cycle is divided into eight equal parts, and the indicator lamps 2, 2... (2) Therefore, when the time information of the lighting display of the red signal lamp 12 in the previous cycle is 80 seconds, and when the waiting time in the next cycle is longer than this, for example, 90 seconds, the final equalization is set to 20 seconds. Judgment is performed so that the indicator lamp 2 scheduled to be finally extinguished on the remaining waiting time indicator 3 is turned on for 20 seconds. (3) If the next display time is shorter than 80 seconds, for example, 70 seconds, the final extinguishment indicator light 2 and the indicator light 2 immediately before it are extinguished at the same time, and the lighting time of the red signal light 12 is turned on. Correspond to the cycle.

The first power supply circuit A does not require a separate power supply from that for the pedestrian traffic light 8 and has the above-described configuration. The power supplied to the red traffic light 12 of the traffic light 8 is used as a power source, and the power of the red traffic light 8 is turned off (the green traffic light 1 is turned off).
3 is lit), since the power stored in the capacitor 22 is released to hold the memory of the memory built in the waiting time display control circuit 19, the pedestrian waiting time display device 1 according to the present invention is provided. In the case of the construction work for the traffic light 8 for pedestrians, the wiring work from the commercial power supply only needs to be performed for the traffic light 8 for pedestrians, and no special power supply and wiring work is required. In addition, it is possible to add or add to the existing pedestrian traffic light 8 with simple construction. Also, while the red signal light 12 is lit, a part of the input power to the red signal light 12 is used to store electricity in the capacitor 22, and when the red signal light 12 is extinguished, the capacitor 22 is discharged and the waiting time display control circuit 19 Since the configuration is such that the memory of the memory is retained, power supply to the first power supply circuit A is not required at all times, which is useful for power saving.

The second power supply circuit B includes a signal tone generator 14
Power supply circuit 23, a signal sound generation control circuit 24, and a speaker 25. Signal sound generator 14
When the green traffic light 13 is turned on, the green traffic light 13 is turned on for a visually impaired person to generate a signal sound (notification sound) for notifying that the crossing permission state has been achieved.
In particular, when the signal tone generator 14 is not required, it is of course possible to omit this. As for the signal sound generated by the signal sound generation device 14, an arbitrary signal sound such as a guide broadcast by artificial sounds or human voices set in advance in the signal sound generation control circuit 24, or a chime or other signal signals is used. It can be configured to generate a mechanically synthesized sound (onomatopoeia) or a melody by a computer. The signal sound may be generated only when the green light 13 is switched, or may be generated during the lighting time of the green light 13. The signal sound generating device 14 includes a green traffic light 13 for the pedestrian traffic light 8.
When is turned on, the necessary sound signal is read from the signal sound generation control circuit 24 and transmitted from the speaker 25 simultaneously with the input of the green signal light 13.

If necessary, in order to supplement the stored power of the capacitor 22 built in the first power supply circuit A, charging for supplying power to the capacitor 22 from the power supply circuit 16 side of the green signal lamp 13 is performed. Circuit configuration 26 can be added, and the cost can be reduced by reducing the capacitance of the capacitor 22.

[0017]

The pedestrian waiting time display device according to the present invention comprises:
With the configuration as described above, the first and second power supply circuits are driven by directly receiving power from a commercial power supply which is distributed and supplied to the pedestrian signal lights from the traffic signal control device, and When the signal light is turned on, the electric charge stored in the capacitor is released while the red signal light is turned on, and the memory for the necessary next cycle period waiting time information stored in the memory of the waiting time display control circuit is maintained. In addition to the need for a separate control device (parent device) other than the pedestrian wait time display device, the power supply circuit can be used for pedestrian traffic even when the pedestrian wait time display device is attached to the pedestrian traffic light. It is only necessary to connect the traffic light to the red light and the green light, and it is extremely easy to attach or add to the pedestrian traffic light. In addition, since it is not necessary to provide a conventional wiring from the traffic signal control device to each pedestrian waiting time display device across the road, it is possible to suppress a rise in construction costs and at the same time to perform installation work. The effects obtained by the implementation of the present invention, such as the ability to be improved, are extremely large.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a pedestrian waiting time display device according to the present invention is juxtaposed with a pedestrian traffic light;

FIG. 2 is an enlarged front view of a main part with a part cut away to show the internal structure of the remaining waiting time display.

FIG. 3 is a block diagram showing an example of a circuit configuration of the pedestrian waiting time display device according to the present invention.

[Explanation of symbols]

 Reference Signs List A First power circuit B Second power circuit 1 Pedestrian waiting time display device 2 Indicator light 3 Remaining waiting time display device 4 Housing 5 Display window 6 Display plate 7 LED display 7a Light emitting diode (LED) 8 Pedestrian Traffic signal light 9 Support post 10a, 10b Support arm 11a, 11b Support bracket 12 Red signal light (crossing prohibited signal light) 13 Green signal light (crossing permitted signal light) 14 Signal sound generator 15 Red signal light side power supply 16 Green signal light side power supply 17 Walking Power supply circuit for waiting time display device 18 Interface circuit 19 Waiting time display control circuit 20 Indicator light drive unit 21 LED drive circuit 22 Capacitor 23 Power supply circuit for signal sound generation device 24 Signal sound generation control circuit 25 Speaker

Claims (2)

(57) [Claims] 1. A pedestrian traffic signal crossing prohibition signal light having a plurality of display lights, wherein the number of lit pedestrian traffic lights is reduced by sequentially extinguishing one light at a time from the lighting state of all the display lights. When the light goes out, the last indicator light goes out,
In a waiting time display device configured to display the remaining waiting time until the next crossing permission signal light is turned on during the lighting time of the crossing prohibition signal light for the pedestrian who is going to cross the road by decreasing the number of lights of the indicator lights. A remaining waiting time indicator comprising the plurality of indicator lights, and a lighting signal of a previous cycle of the crossing prohibition signal light in the lamp output signal output from the traffic signal control device, to input a lighting time of the crossing prohibition signal light. While measuring and storing, based on the measurement result, the waiting time of the traverse prohibition signal light in the next cycle is divided every predetermined time, and the lighting number of the indicator light is reduced according to the lapse of the divided waiting time. A control circuit for causing the power supply to the traversing prohibition signal light to be a power source for the remaining waiting time indicator, and a power supply to the control circuit when the traversing permission signal light is turned on. Pedestrian waiting time display device characterized by having a power circuit to a power source for storing electric capacitor use. 2. A pedestrian traffic signal crossing prohibition signal light having a plurality of indicator lights, which is turned off one by one sequentially from the lighting state of all the indicator lights to reduce the number of lit pedestrian traffic lights. When the light goes out, the last indicator light goes out,
In a waiting time display device configured to display the remaining waiting time until the next crossing permission signal light is turned on during the lighting time of the crossing prohibition signal light for the pedestrian who is going to cross the road by decreasing the number of lights of the indicator lights. A remaining waiting time indicator comprising the plurality of indicator lights, and a lighting signal of a previous cycle of the crossing prohibition signal light in the lamp output signal output from the traffic signal control device, to input a lighting time of the crossing prohibition signal light. In addition to measuring and storing, based on the measurement result, the waiting time of the traversing prohibition signal light in the next cycle is divided every predetermined time, and the lighting number of the indicator light is reduced according to the lapse of the divided waiting time. A control circuit for causing the power supply to the crossing prohibition signal light to be used as a power supply for the remaining waiting time indicator, and a power supply for holding the control circuit when the crossing permission signal light is turned on. A first power supply circuit for storing electric capacitors, pedestrian waiting time display device characterized by providing a second power supply circuit to power of the signal sound generating means supply power to said transverse permission signal lights.