JPH08147594A - Displaying method for time indicating lamp for pedestrian signal lamp device - Google Patents

Abstract

PURPOSE: To provide a time indicating lamp for pedestrian signal lamp device capable of effectively using a display area and displaying waiting time and remaining time with improved visibility. CONSTITUTION: By the arithmetic processing part 42 of a display control part 40, the lighting time of lamp color signals PR and PG is respectively individually measured and the respective pieces of display step time are calculated. By respective display devices 51 capable of displaying the two colors of red and green of a display part 50, the waiting time is displayed in red and amber color and the remaining time is displayed in green color.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of displaying a time indicator light for a pedestrian signal light device, and in particular, it is installed in a pedestrian signal light device installed at a pedestrian crossing and measures the time until the pedestrian signal changes. The present invention relates to a method of displaying a time indicator lamp for a pedestrian signal lamp, which is displayed in a static manner.

[0002]

2. Description of the Related Art Conventionally, pedestrian signal lamps installed at both ends of a pedestrian crossing are attached to the pedestrian signal lamps to display the time until the pedestrian signal changes (hereinafter,
As shown in FIG. 7, it has been proposed to display the waiting time when the red light of the pedestrian is lit and the remaining time display when the green light of the pedestrian is lit together as shown in FIG. Hei 2-22793, etc.). In FIG. 7, 1 is a pedestrian traffic light having a red traffic light 1R and a blue traffic light 1G, and 2 is a red display portion 2R for displaying a waiting time when the red traffic light 1R is lit and a waiting time when the blue traffic light 1G is lit. The red display section 1R and the blue display section 1G are each a time display lamp having a blue display section 2G, and each of the red display section 1R and the blue display section 1G is composed of a plurality of red and blue displays arranged in layers.

Now, in response to the lighting of the red signal lamp 1R of the pedestrian signal lamp 1, all the red indicators of the red display portion 2R of the time indicator lamp 2 are turned on, and the red indicators are turned off in order from the top. However, all the red indicators are extinguished at the same time that the red signal lamp 1R is extinguished. Then, in response to the lighting of the blue signal light 1G of the pedestrian signal light device 1, all the blue display devices of the blue display portion 2G of the time display light 2 are turned on, and the respective blue display devices are turned off in order from the top. At the same time that the blue signal light 1G was extinguished, all the blue indicators were extinguished.

[0004]

Therefore, in such a conventional time indicator lamp for a pedestrian traffic light, the red traffic light 1 is used.
A display section for displaying the waiting time when the R is lit, that is, a red display section 2R and a display section for displaying the remaining time when the green signal lamp 1G is lit, that is, the blue display section 2G are provided and individually displayed. Since each display unit has a low efficiency in using each display unit, the area allocated to each display unit is small in comparison with the large number of display units, and time can be displayed only in a limited area. There was a problem that it did not exist.
The present invention is to solve such a problem,
An object of the present invention is to provide a method of displaying a time indicator lamp for a pedestrian traffic light, which can effectively display the waiting time and the remaining time by using the display area.

[0005]

In order to achieve such an object, a method for displaying a time indicating lamp for a pedestrian traffic light according to the present invention comprises a plurality of indicators for individually displaying a first color and a second color. With the display section consisting of, the lighting time of the red signal light and the blue signal light is measured individually from the input signal, and the red and blue display step times are calculated individually by dividing each lighting time by the number of display steps, respectively. In accordance with the start of lighting of the signal light, the waiting time until the end of lighting of the red signal light is displayed on the display unit in the first color, and
Red display step The display is updated by a plurality of display steps for each time, and in accordance with the start of lighting of the blue signal light, the remaining time until the end of lighting of the blue signal light is displayed on the display unit in the second color, and the blue display step is performed. The display is updated by a plurality of display steps for each time.

When the waiting time is displayed, it is updated and displayed based on the red display step time calculated from the lighting time when the red signal is lit immediately before the display, and when the remaining time is displayed, it is displayed immediately before the display. The display is updated based on the blue display step time calculated from the lighting time when the blue signal is lit. In addition, the display unit is arranged in layers and includes a plurality of indicators for individually and mixedly displaying the first and second colors, and all of the indicators are set to the first indicator in response to the start of lighting of the red signal light. The indicator on the top is displayed in mixed color, and the red indicator is turned off at every step time of the red display, and the indicator on the bottom is mixed. By displaying the waiting time, the waiting time is displayed. Further, when it is detected based on the input signal that the blue signal light is continuously turned on for a predetermined time or longer, all the indicators are turned off.

[0007]

Therefore, the red and blue display step times divided by the respective display step numbers are individually calculated from the lighting times of the red signal light and the blue signal light individually measured from the input signal, and the lighting of the red signal light is started. Then, the waiting time until the lighting of the red signal light is displayed on the display unit in the first color, and is updated and displayed by a plurality of display steps for each red display step time. While the remaining time until the end of lighting of the blue signal light is displayed on the display unit in the second color,
It is updated and displayed by a plurality of display steps every blue display step time.

[0008]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a pedestrian signal lamp time display lamp (hereinafter referred to as a time display lamp) according to an embodiment of the present invention. An example of a time display lamp that operates by receiving an input signal will be described. In FIG. 1, 1 is a pedestrian traffic light installed at both ends of a pedestrian crossing, 1R is a red traffic light that displays a red traffic light indicating that crossing is not possible, and 1G is a blue traffic light that displays a blue traffic light that indicates that crossing is possible. , The red signal lamp 1R according to the lamp color signal PR (red lamp color signal) of AC100V supplied from the signal controller (not shown) between the wirings 5R and 5C
Lights up and AC100V is supplied between wiring 5G-5C
Blue signal lamp 1 according to the lamp color signal PG (blue lamp color signal) of
G lights up.

Numeral 10 is a time indicator lamp which is provided adjacent to the pedestrian signal light device 1 and quantitatively displays the time until the pedestrian signal changes, and 11 and 12 are light color signals PR supplied from the signal controller. , 20 is an input switch for shutting off the PG, 20 is a power supply unit for generating operation power from the lamp color signals PR, PG and supplying it to each section, 30 is a lighting signal PRS, PGS synchronized with these signals from the lamp color signals PR, PG. A lighting signal generation unit for generating and outputting, 50 is a display unit composed of a plurality of display devices 51 arranged in layers and displaying two colors of red and green individually and in a mixed color, 40 is each lighting signal PRS from the lighting signal generation unit 30, A display system that quantitatively displays the waiting time until the red signal lamp 1R finishes lighting and the remaining time until the green signal lamp 1G finishes lighting by controlling the respective display devices 51 to turn off the lights in order from the top based on the PGS. It is a part.

In the power supply unit 20, 21 and 22 are rectification units for individually rectifying the respective lamp color signals PR and PG (AC100V), and 23 is a signal obtained by adding the rectification outputs from the rectification units 21 and 22 as inputs. A voltage conversion unit that outputs a predetermined DC voltage, and 24 is a capacitor having a relatively large capacity that stores a voltage to be supplied when the output voltage from the voltage conversion unit 23 decreases. In the lighting signal generation unit 30, 31 and 32 are rectification units for individually rectifying the respective lamp color signals PR and PG, and 33 and 34 are smoothed rectification outputs from the rectification units 31 and 32 to generate a DC voltage. The smoothing unit outputs the lighting signals PRS and PGS, respectively.

In the display control unit 40, 41 is an abnormality detection unit that outputs an abnormality detection signal when the lighting signals PRS and PGS indicate the extinction of light for a predetermined time or longer, and 42 is a microprocessor that outputs the lighting signals PRS and PGS. The lighting time of the red traffic light 1R and the lighting time of the green traffic light 1G in the pedestrian traffic light 1 are measured based on the above, and the time intervals at which the respective display devices 51 are extinguished in turn, that is, the display step time, are calculated, respectively. The arithmetic processing unit 43 performs display control of each display unit 51 based on the step time, and shifts to the process at the start of power supply according to the abnormality detection signal. The display unit 50 responds to an instruction from the arithmetic processing unit 42. It is a drive unit that outputs a drive signal to each display unit 51 inside.

FIG. 2 is a flow chart showing the display control processing in the arithmetic processing section. Hereinafter, referring to FIG.
The operation of the present invention will be described. First, in response to power failure recovery or “contact” operation of the input switches 11 and 12, the power supply unit 2
0 is input with AC 100 V from the light color signal PR or PG, the rectified output is input into the voltage conversion unit 23 from either of the rectification units 21 and 22, and a predetermined DC voltage is output to the time indicator lamp 1.
0 is supplied to each part.

Note that the lamp color signals PR and PG are supplied complementarily, but by adding the outputs of the rectifying units 21 and 22 and inputting them to the voltage converting unit 23, either lamp Color signals are constantly input and stable power supply is realized. In addition, the light color signal PG is in a blinking state immediately before the red signal is lit, and the input power supply is in a stopped state because the light color signal PR is also in the dark state during this extinguishing period, but a capacitor having a relatively large capacity is used. By providing 24 on the output side of the voltage conversion unit 23 and supplying the voltage charged in the capacitor 24 as a power source at the time of lighting each light color signal, stable power supply is realized even during the extinguished light period during blinking. ing.

On the other hand, the lamp color signals PR and PG are also supplied to the lighting signal generating section 30, rectified by the rectifying sections 31 and 32, respectively, and further smoothed to a DC voltage by the smoothing sections 33 and 34 to obtain the lamp color signal. The lighting signals PRS and PGS synchronized with PR and PG, respectively, are input to the arithmetic processing unit 42 of the display control unit 40. Almost at the same time, in response to the start of power supply from the power supply unit 20, the arithmetic processing unit 42 including the microprocessor of the display control unit 40 starts operating.

First, in step 61 of FIG.
The PG display step time is initialized, and in the following step 62, the lighting time measurement processing for measuring the lighting time of the lamp color signals PR and PG is started as parallel processing. FIG. 3 is a flowchart showing the lighting time measuring process, and the lighting time measuring process will be described below with reference to FIG.

First, in step 71, a lighting signal P
Whether or not the lighting color signal PG is in the lighting state is detected based on GS, and when the lighting state of the lighting color signal PG is detected (step 71: YES), the process proceeds to step 72, and the lighting signal If the rising of the lamp color signal PR (start of lighting) is detected based on the PRS (step 72: NO), the rising of the lamp color signal PR is detected (step 72: YES), the step 73
In, the timer inside the arithmetic processing unit 42 is reset and activated, and thereafter, the counting operation is started at regular intervals.

In the following step 74, the lighting signal PR
It is in a standby state until the fall (lighting end) of the light color signal PR is detected based on S (step 74: N
O), the fall detection of the lamp color signal PR (step 74:
Yes), the timer is stopped in step 75,
In step 76, the time from the rise to the fall of the lamp color signal PR, that is, the PR lighting time is calculated from the timer count value.

Further, in step 77, the PR
The PR display step time is calculated from the lighting time. In this case, as the display step, after all the indicators 51 of the display unit 50 are turned on, the lights are turned off in order from the top to quantitatively display the waiting time while the red signal is turned on. By dividing the time by the number of display steps, here, the number of steps of the display 51, "10", the interval at which the display 51 is turned off in sequence, that is, the PR display step time is calculated. Then, in step 78, this P
The R display step time is stored in a predetermined storage location, and P
After the processing for measuring the R lighting time is completed, P after step 82
The process proceeds to the G lighting time measurement process.

On the other hand, when the lighting state of the lamp color signal PG is not detected in step 71 (step 71: NO), in step 81, is the lamp color signal PS in the lighting state based on the lighting signal PRS? If the lighting state is not detected (step 81: NO), the process returns to step 71 again, and if the lighting state of the lamp color signal PR is detected (step 81: YES),
The process proceeds to the process of measuring the PG lighting time after step 82. The measurement processing of the lighting signal PG is the same as the above-described PR lighting time measurement processing (steps 72 to 78), and the measurement target is not the lighting signal PR but the rising to the falling of the lighting signal PG.

First, in step 82, the lighting signal P
Rise of the light color signal PG based on GS (lighting start)
Waits until is detected (step 82: N
O), if the rise of the lamp color signal PG is detected (step 82: YES), the timer inside the arithmetic processing unit 42 is reset and activated in step 83, and thereafter, the timer is counted at a constant period. Start operation.

In the following step 84, the lighting signal PG
It is in a standby state until the fall (lighting end) of the lamp color signal PG is detected based on S (step 84: N
O), the fall detection of the lamp color signal PG (step 84:
YES), the timer is stopped in step 85,
In step 86, the time from the rise to the fall of the light color signal PG, that is, the PG lighting time is calculated from the timer count value.

Further, in step 87, this PG
The PG display step time is calculated from the lighting time. In this case, after the display units 51 arranged in layers as shown in FIG. 6 to be described later are turned on in all stages, they are turned off sequentially from the top to quantitatively display the remaining time during the green light is turned on. Therefore, by dividing the obtained PG lighting time by the number of display steps, here, the number of display devices 51, “10”, the intervals at which the display devices 51 are sequentially turned off, that is, the PG display step time is calculated. Then, in step 88, the PG display step time is stored in a predetermined storage location, and the PG lighting time measurement process ends, and step 7
Then, the process proceeds to the measurement process of the PR lighting time after 2.

On the other hand, in the display control process of FIG. 2, in the following step 63, it is detected whether or not the PR display step time shows a valid value, and the effective display step time is measured by the above-mentioned PR lighting time measurement process. When it is obtained (step 63: YES), in the following step 64,
The standby state is maintained until the rise of the lamp color signal PR (start of lighting) is detected based on the lighting signal PRS (step 64: NO), and in accordance with the rise detection of the lamp color signal PR (step 64: YES), the process proceeds to step 65. Then, the waiting time display process is performed for each display 51 of the display unit 50, and after the waiting time display process is completed, the process proceeds to the remaining time display process after step 66.

If the PR display step time does not show a valid value in step 63 (step 6)
3: NO), it is detected in step 66 whether or not the PG display step time shows a valid value. If it is not valid (step 66: NO), the procedure returns to step 63, and the PG display step time Is a valid value (step 66: YES), in the following step 67, a standby state is set until the rise (lighting start) of the lamp color signal PG is detected based on the lighting signal PGS (step 67: NO). ), In response to the detection of the rise of the lamp color signal PG (step 67: YES), the process proceeds to step 68, the remaining time display processing is performed on each display 51 of the display unit 50, and after the remaining time display processing ends, step 64
The subsequent waiting time display processing is performed.

FIG. 4 shows the arithmetic processing unit 4 at the start of power supply.
It is explanatory drawing which shows operation | movement of FIG. 2, (a) is the lighting state of the pedestrian signal light apparatus 1, (b) is the arithmetic processing part 4 of the time display lamp 10.
2 is a display control process, and FIG.
2 shows the lighting time measurement process in FIG. 2, PR shows the lighting of the red signal lamp 1R, and PR shows the lighting and blinking of the blue signal lamp 1G.

When the power supply is started at the time T0, the lighting time measurement process is started immediately after the display control process is started and executed in parallel, and the display control process waits for the measurement of the display step time. Become. In the lighting time measurement process, the lighting state of the light color signal PR is confirmed after the start-up, the PG lighting time measurement is started in response to the rise (lighting start) of the light color signal PG at time T1, and the light color signal at time T2. The measurement of the lighting time ends in response to the fall of the PG (lighting end), and the PG display step time tG1 is calculated and stored.

Further, the measurement of the PR lighting time is started in response to the rise (lighting start) of the light color signal PR at time T3, and the lighting time is measured in response to the fall (lighting end) of the light color signal PR at time T4. After the measurement is completed, the PR display step time tR1 is calculated and stored. On the other hand, in the display control process, the PG display step time tG1 calculated at the time T2 by the lighting time measurement process is read out and waits for the rising edge detection of the lamp color signal PG, and the time T4 is reached.
The remaining time display process is started based on the PG display step time tG1 in response to the rise of the lamp color signal PG at, and the remaining time display process is ended in response to the fall of the lamp color signal PG at time T5.

In parallel with this, in the lighting time measuring process,
As described above, the measurement of the PG lighting time is started from the time T4, the measurement is finished at the time T5, a new display step time tG2 is calculated and stored, and thereafter, the measurement of the PR time and the measurement of the PG lighting time are alternately performed. The PR display step time and the PG display step time are updated. On the other hand, in the display control process, the PR display step time tR1 calculated by the lighting time measurement process at time T4.
Is read and the rising edge of the lamp color signal PR is awaited, and the remaining time display processing is started based on the PR display step time tR1 in response to the rising edge of the lamp color signal PR at time T6. The remaining time display processing ends in response to the fall of.

Thereafter, the waiting time display processing and the remaining time display processing are alternately repeated based on the latest PR display step time and PG display step time calculated by the lighting time measurement processing. In this way, the lamp color signal P
The lighting time of R and PG is measured individually, and each P
The R display step time and the PG display step time are calculated and sequentially updated, and the waiting time display and the remaining time display are performed based on these latest PR and PG display step times, thereby enabling accurate time display. It will be possible.

FIG. 5 is an explanatory diagram showing the waiting time and remaining time display on the display unit. Each of the indicators 51 is composed of a large number of light emitting diodes that light one or both of red (first color) and green (second color). In this case, from the uppermost indicator 51U. The lowermost display unit 51L is provided in 10 stages, and 51T indicates the uppermost display unit among the illuminated display units 51. While the blue signal light 1G of the pedestrian signal light device 1 is lit, the blue signal light 1
The remaining green time until G flashes is displayed quantitatively,
On the other hand, while the red signal lamp 1R is lit, the red signal waiting time until the red signal lamp 1R is lit is quantitatively displayed.

First, at time T4 (see time T4 in FIG. 4), all the indicators 51 are turned on in green in response to the start of lighting of the blue signal light 1G, and the PG display step time tG1.
The uppermost display 51T currently lit is extinguished every time
When the blue signal lamp 1G is turned off (flashing starts) at time T5, all stages are turned off. Further, at the time T6, all the indicators 51 are illuminated in red in response to the start of the illumination of the red signal lamp 1R, and the indicator 51T at the top of the indicator is illuminated.
For, the amber color (daidai color) is lit by the lighting of both red and green.

After that, the uppermost display 51T which is currently lit is extinguished at every PR display step time tR1, and the display 5 which is the next stage, that is, the lit uppermost stage thereafter, is turned off.
Amber color (light blue) is lit at 1T and the time is T7.
In accordance with the extinguishment of the red signal light 1R in the above, the whole stage is extinguished. As described above, by using the display device 51 capable of displaying two colors, by displaying in red during the waiting time display and displaying in green during the remaining time display, it is possible to display different times on the same display device and display area. Can be used effectively. Further, at the time of displaying the waiting time, the indicator 51T at the top of the lighting is turned on with an amber color having good visibility, so that the pedestrian can easily confirm the remaining time.

Further, FIG. 6 shows P in the arithmetic processing unit 42.
6 is a flowchart showing the R waiting time display processing (step 65 in FIG. 2), and the waiting time display processing will be described below with reference to FIG. First, in step 91,
All the indicators 51 of the display section 50 are illuminated in red, and the indicator 51T (51U) at the top of the indicator is illuminated in amber color.
The PR display step time is set in the internal timer 2 and activated, and the timer value is decremented at regular intervals.

In the following step 93, the time-out standby state is entered by detecting that the timer value becomes zero (step 93: NO), and in response to the time-up detection (step 93: YES), step 94 is entered. After the transition, the display 51L at the bottom is displayed as the current display state.
It is determined whether or not only one is lit. Here, when only the display 51L is not lit (step 94: NO)
In step 95, the display 51 that is currently lit is displayed.
Only the uppermost display 51T among them is extinguished, and the next stage is lit in amber, and one display step ends and the process returns to step 92. From then on, the display 51 is turned off.

In step 94, the display 51
If only L is on (step 94: YES), a standby state is detected in which the fall (lighting end) of the lamp color signal PR is detected based on the lighting signal PRS (step 9).
6: NO), and according to the detection of the fall of the lamp color signal PR (step 96: YES), the process proceeds to step 97, all the display devices 51 are extinguished, and the waiting time display processing is ended. As a result, even when the lighting time of the light color signal PR is extended in the sensitive signal or the centralized control signal, the display 51L at the bottom is continuously lit during the extension period, that is, the period until the blue signal is lit. Therefore, all the lights of the display 51 before the pedestrian signal changes from the red signal to the green signal are prevented.

In step 93, when the timer has not timed up yet (step 93: NO)
In step 98, the process enters a standby state in which the trailing edge (lighting end) of the light color signal PR is detected based on the lighting signal PRS. If no trailing edge is detected (step 98: NO), the step is repeated. Move to 93. In addition, when the fall of the lamp color signal PR is detected in step 98 (step 98: YES), the process proceeds to step 97, all the display devices 51 are extinguished, and the waiting time display processing ends. To do.

As a result, even when the lighting time of the lamp color signal PR in the sensitive signal or the centralized control signal is shortened, the remaining indicator 51 is displayed at the same time when the lamp color signal PR is extinguished.
Are all extinguished, and in this way, during the lighting period of the light color signal PR, the respective display units 51 of the display unit 50 are extinguished sequentially from the top, and the waiting time is quantitatively displayed. After the waiting time display process ends, the process returns to step 67 in the display control process of FIG. 2 to execute the next remaining time display process. Regarding the remaining time display processing, although green is used as the display color and the top row display in the amber color is not performed, it is different,
This is similar to the waiting time process (see FIG. 6) described above.

Further, by detecting not only the lamp color signal PR but also the lighting extinguished state of the lamp color signal PG, it is possible to detect and cope with the occurrence of an abnormality. The abnormality detection unit 41 of the display control unit 40 (see FIG. 1) uses the lighting signal PR.
Based on S and PRG, it is constantly monitored whether both the lamp color signals PR and PG are in the extinguished state. In a normal pedestrian signal, both the red and blue signals are not continuously turned off for more than 2 seconds at the same time in operation.
When R and PG are in the extinguished state continuously for a predetermined time, for example, 2 seconds or more, the abnormality detection unit 41 outputs an abnormality detection signal.

In response to this, the arithmetic processing section 42 is reset to turn off all the display devices 51 and
From the step 61, the process shifts to the initial process at the start of power supply and stands by. With this, it is possible to automatically detect an abnormality in the self device 10, the pedestrian signal light device 1, the signal controller 4, or the like, or a power failure, and
It is possible to suppress an unstable operation due to a decrease in power supply voltage that may occur in response to continuous extinction.

Further, by monitoring the continuous lighting time of the lamp color signal PG, it becomes possible to detect and cope with the occurrence of an abnormality. In the case of a normal pedestrian signal, the blue signal does not continuously turn on for 220 seconds or more in operation, and when the light color signal PG is continuously turned on for a predetermined time, for example, 220 seconds or more, The remaining time display currently being displayed will be extinguished.

This may be monitored, for example, in step 84 of the lighting time measuring process of FIG. 3, and in this case,
If the timer value is equal to or greater than 220 seconds, it is judged as abnormal, and all the remaining time displays displayed by the display control processing executed in parallel are extinguished.
The G remaining time display processing (step 68) is completed. As a result, the own device 10, the pedestrian signal light device 1,
Alternatively, an abnormality of the signal controller 4 or the like can be automatically detected, and it becomes possible to stop the unnecessary remaining time display that has become meaningless due to the abnormal extension of the green signal lighting.

In the above description, the time indicator lamp which operates by using each light color signal to the pedestrian signal lamp as a power source and a control signal has been described as an example, but the present invention is not limited to this, and the crosswalk is not limited thereto. The same applies to a time display lamp that controls one of the pair of time display lamps installed at both ends of the other. In this case, from the control signal indicating the lighting state of the red and blue signal lights of the pedestrian signal light device, which is supplied from the signal controller, a lighting signal that is synchronized with each of the above-mentioned lighting color signals is generated, and based on this, By measuring the lighting time of each lamp color signal according to the present invention, it is possible to implement the present invention even with a configuration different from that of the time display lamp shown in FIG. 1, and to obtain the same effect as described above. It will be possible.

[0043]

As described above, the present invention is provided with a display section including a plurality of indicators for individually displaying the first and second colors, and displays the lighting time of each signal lamp measured from the input signal. The red and blue display step times are calculated individually, and according to the start of lighting of the red signal lamp, the waiting time until the end of lighting of the red signal lamp is displayed on the display unit in the first color, and a plurality of times are displayed for each red display step time. The display step is updated and the remaining time until the end of lighting of the blue signal light is displayed on the display unit in the second color according to the start of lighting of the blue signal light, and a plurality of display steps are performed at each blue display step time. Since the display is updated, it is possible to effectively use the display area to display the wait time and remaining time with better visibility, and also to improve the display time for each lighting time. It is possible to display the the waiting time and the time remaining.

When the waiting time is displayed, it is updated and displayed based on the red display step time calculated from the lighting time when the red signal is lit immediately before the display, and when the remaining time is displayed, it is displayed immediately before the display. Since the display is updated based on the blue display step time calculated from the lighting time when the blue signal lights up, it is possible to automatically follow up even when each lighting time changes, and more accurate waiting time And it becomes possible to display the remaining time.

Further, the display section is composed of a plurality of indicators arranged in layers and displaying the first and second colors individually and in a mixed color, and all the indicators are displayed in response to the start of lighting of the red signal light. Is lit in the first color, the uppermost display is displayed in mixed colors, and the uppermost display among the lit indicators is extinguished at every red display step time, and Since the waiting time is displayed by displaying the mixed colors on the display device, it is possible to improve the visibility for a pedestrian, especially in the waiting time display when the red signal light is on. In addition, when it is detected that the blue signal light is on continuously for a predetermined time or longer based on the input signal, all the indicators are turned off. If is abnormally extended, unnecessary remaining time display can be stopped.

[Brief description of drawings]

FIG. 1 is a block diagram of a pedestrian signal lamp time indicator lamp according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a display control process in an arithmetic processing unit.

FIG. 3 is a flowchart showing a lighting time measurement process in the arithmetic processing unit.

FIG. 4 is an explanatory diagram showing an operation of a calculation processing unit at the time of starting power feeding.

FIG. 5 is an explanatory diagram showing a display unit and each time display.

FIG. 6 is a flowchart showing waiting time display processing in the arithmetic processing unit.

FIG. 7 is an explanatory diagram showing a conventional pedestrian signal lamp time display lamp.

[Explanation of symbols]

1 ... Pedestrian traffic light, 1R ... Red traffic light, 1G ... Blue traffic light, 5R, 5G, 5C ... Wiring, 10 ... Pedestrian traffic light time indicator lamp, 11, 12 ... Input switch, 20 ... Power supply part 21, 22 ... Rectification unit, 23 ... Voltage conversion unit, 24 ... Capacitor, 30 ... Lighting signal generation unit, 31, 32 ... Rectification unit, 33, 34 ... Smoothing unit, 40 ... Display control unit, 41 ... Abnormality detection unit, 42 ... Arithmetic processing unit, 43 ... Driving unit, 50 ... Display unit, 51 ... Display unit.

Claims (4)

[Claims] 1. A pedestrian signal light device having a red signal light and a blue signal light is provided side by side, and the pedestrian signal is changed by a plurality of display steps showing a quantitative change based on an input signal indicating a lighting state of each signal light. In a pedestrian traffic light time display light for updating and displaying the time until, a display unit including a plurality of display devices for individually displaying the first and second colors is provided, and from the input signal, the red traffic light and the blue traffic light are displayed. The lighting time is measured individually, and the red and blue display step times are calculated by dividing each of the lighting times by the number of respective display steps, and according to the lighting start of the red signal light, the lighting end of the red signal light is ended. The waiting time until the first color is displayed on the display unit, and the update table is displayed by a plurality of display steps for each red display step time. Then, in accordance with the start of lighting of the blue signal light, while displaying the remaining time until the end of lighting of the blue signal light on the display unit in the second color, by a plurality of display steps for each blue display step time A method for displaying a time indicator light for a pedestrian traffic light, which is characterized in that the display is updated. 2. The method for displaying a time indicator lamp for a pedestrian traffic light according to claim 1, wherein when the waiting time is displayed, a red display step calculated from the lighting time when the red signal is lit immediately before the display. The display is updated based on time, and when the remaining time is displayed, the display is updated based on the blue display step time calculated from the lighting time when the blue signal is lit immediately before display. How to display the time indicator light for pedestrian traffic light. 3. The method for displaying a time indicator light for a pedestrian traffic light according to claim 1, wherein the display section is arranged in layers and displays the first and second colors individually or in a mixed color. Comprised of a plurality of indicators, in response to the start of lighting of the red signal light, all the indicators are illuminated in the first color, the uppermost indicator is mixed-colored, and the red display step time is increased. The pedestrian signal lamp time display is characterized in that the display at the top of the lit indicators is extinguished, and the display immediately below is displayed in mixed colors to display the waiting time. How to display lights. 4. The method for displaying a time indicator lamp for a pedestrian signal lamp according to claim 1, wherein when it is detected that the blue signal lamp is continuously turned on for a predetermined time or longer based on the input signal. , A method for displaying a time indicator light for a pedestrian traffic light, which is characterized in that all the indicators are extinguished.