KR200179136Y1 - Apparatus for representing the wait time of traffic light - Google Patents

Abstract

The present invention relates to a wait time indicator of a traffic light. As a conventional traffic signal waiting time indicator, a 7-segment display method in which a digital number gradually decreases has been proposed. The disadvantage of this method is that if a failure occurs in one or more segments of the seven segments representing a number, the normal number is not displayed, which may cause a traffic accident, especially a pedestrian accident. In addition, the conventional traffic signal waiting time indicator is disadvantageous in the maintenance and management of the traffic signal waiting time indicator because the lamp is composed of filaments, so the breakage is frequent and it is designed integrally with the traffic signal. .

The present invention is to improve the problem of the conventional traffic signal wait time indicator, the wait time indicator of the present invention is composed of an LED substrate in which a plurality of LED elements are integrated to form a graphic bar and designed to be replaced by module A display module 12, a display main body 11 accommodating a plurality of the bar display module in the longitudinal direction, and an LED constituting the bar display module such that the bar display of the display main body gradually decreases according to the amount of waiting time; It includes a display control circuit (2) for controlling the flashing sequentially, this wait time indicator has a feature that can be simply installed on one side of the existing pedestrian traffic lights or vehicle traffic lights.

Description

{Apparatus for representing the wait time of traffic light}

The present invention relates to a waiting time indicator of a traffic light, and in particular, by placing a plurality of independent bar indicator module by a plurality of LED signal waiting time indicator in a row and controlling their lighting on and off sequentially The present invention relates to a waiting time indicator such as a traffic light that can quantitatively display a waiting time for a traffic signal and to ensure the reliability and stability of the operation of the waiting time indicator.

Traffic lights of traffic signals to control the intersection of vehicles or pedestrians to control the pedestrian crossing can not predict how much time is left before the current signal changes to another signal, so it is always available to pedestrians or vehicle drivers. It gives you anxiety.

Many techniques have been proposed in the past to improve the safety of pedestrians and vehicle drivers by displaying the remaining time of traffic signals in order to solve the anxiety of pedestrians and drivers during road driving or crossing the road.

As the related art, Korean Patent Publication No. 180 (Publication No. 86-2073), Korean Patent Publication No. 210 (Publication No. 86-6752), and Korean Patent Publication No. 446 (Publication No. 89- 4265), Korean Patent Publication No. 915 (Publication No. 92-15251), Korean Patent Publication No. 1122 (Publication No. 93-18446), Korean Patent Publication No. 1416 (Publication No. 95-1577) ) And Patent Publication No. 3813 (Publication No. 94-11017). These prior arts calculate the remaining waiting time for traffic and display the remaining time through the digital segment indicator.

However, as shown in FIG. 1, when disconnection occurs in any one or two of the seven segments due to long-term use of the digital segment indicator, 8 characters are displayed as 3 or 6 characters are displayed as 5 characters. As such, errors may appear in the remaining time numeric display. Such traffic signal remaining waiting time display error may expose the driver or pedestrian to the risk of traffic accident.

In particular, when using a pilot bulb for displaying the traffic signal waiting time, there is a problem that the bulb does not have a long life and must be replaced frequently.

In addition, the existing traffic signal wait time indicator is not displayed as a wait time indicator for children or illiterates who do not know the number because the indication is expressed only in numbers, and the remaining wait time indication is reduced by the number of seconds at the predetermined position. Since it is represented by a number, it has a problem of poor visibility.

On the other hand, the conventional remaining waiting time indicator is made of a single traffic signal, so the production cost is high, and the installation of the existing traffic signal must be removed, resulting in waste of materials and construction power, management and maintenance In terms of disadvantages.

An object of the present invention is to produce a traffic signal waiting time indicator to improve the above problems, a plurality of bar indicator module is installed side by side in the bar type indicator body, the bar indicator module is individually coupled in the body The bar indicator module is made by integrating at least dozens or hundreds of LEDs, thereby improving visibility of the remaining time of the traffic lights and improving handling, management, and maintenance. It is easy to provide a semi-permanent traffic signal waiting time indicator.

1 is a reference diagram of a traffic signal waiting time indicator using a conventional seven segments.

2 is a front view of a state in which the indicator of the present invention is installed in a pedestrian traffic light.

Figure 3 is an exploded perspective view for explaining the structure of the bar indicator module of the present invention indicator.

4 is a side cross-sectional view of an indicator of the present invention.

5 is a block diagram of the control circuit of the present invention indicator.

6 is a circuit diagram of an exemplary embodiment of a wait time indicator driving unit of the indicator according to the present invention.

7 is a circuit diagram of another embodiment of the wait time indicator driving unit of the indicator according to the present invention.

** Explanation of symbols on the main parts of the drawing **

1: Wait time indicator 2: Indicator control circuit

11: Indicator body 12: Bar indicator module

12a: LED 12b: LED Board

12c: Connector 13: Display Window

14 rear cover 15 lampshade

21: microprocessor 22: standby time indicator driving unit

23: traffic light driver 24: memory

25 timer unit 26 decoder unit

27: flip-flop portion 28: optocoupler

29: Triac 41: Stop light

42: pedestrian traffic light

The present invention for achieving the above object is composed of a LED substrate in which a plurality of LED elements are integrated to form a single graphic bar, the bar display module designed to be replaced by each module, and the indicator for receiving a plurality of the bar display module in the longitudinal direction A main body and an indicator control circuit sequentially controlling the LEDs constituting the bar indicator module to sequentially reduce the bar display of the display base body according to the amount of waiting time. It has a feature that can be easily installed in the free space on one side of a vehicle traffic light.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

2 shows a state in which the traffic signal waiting time indicator 1 according to the present invention is installed in a traffic light of a crosswalk.

As referred to herein, a pedestrian traffic light, in which the stop signal 41 in which a red signal enters and the pedestrian traffic light 42 in which a green signal comes in, is formed in the post 3 of the ?? state. Adjacent to such pedestrian traffic lights, the wait time indicator 1 of the present invention is provided. The space in which the waiting time indicator 1 is provided is a space portion formed between the pedestrian traffic light and the prop in a direction perpendicular to the ground.

In the display main body 11 constituting the waiting time indicator 1, a plurality of bar display modules 12 are arranged side by side in the longitudinal direction, and a front display window 13 is formed on the surface of the bar display module 12. The shade 15 is formed around the indicator body 11.

The bar indicator module 12 has an integrated arrangement of dozens to hundreds of LEDs 12a, as shown in FIG. 3 showing a partially exploded perspective view of the indicator of the present invention and in FIG. 4 showing a sectional side view of the indicator of the present invention. It is formed of the LED substrate 12b.

The LED 12a on the LED substrate 12b is connected to the LED driving indicator control circuit 2 through the connector 12c. The plurality of bar indicator modules 12 are individually mounted from the rear of the indicator body 11 and installed to face the front, and the rear cover 14 at the rear thereof for waterproofing and airtightness of the waiting time indicator 1. Install).

5 shows a block diagram of an indicator control circuit 2 for driving the LED 12a on the bar display module 12. As shown in FIG.

As referred to herein, the indicator control circuit 2 includes a microprocessor 21 for receiving a traffic switching signal from a normal traffic signal controller as a lighting signal input and generating a wait time indicator control signal, and the microprocessor 21. A wait time indicator driver 22 for generating a control signal for driving the LEDs in the wait time indicator 1 according to the control output of the timer, and a timer unit for generating time information by dividing a predetermined clock frequency generated from the crystal oscillator (25), a memory (24) for storing an initialization program, a time program, and data of the microprocessor (21), a normal stop light (41) for receiving a traffic switching signal from the traffic signal controller as a lighting signal input; The traffic light driver 23 selectively drives the pedestrian traffic light 42.

6 shows a specific internal circuit configuration of the wait time indicator driver 22.

As referred to herein, when the display control signal DS for lighting control is output from the microprocessor 21, the display control signal is decoded by the decoder unit 26 and is composed of a plurality of flip flops 27a to 27n. It is connected to be input to the flip-flop unit 27, the coupler control signal (CS) output from each flip-flop (27a to 27n) in the flip-flop unit 27 is connected to be applied to the input terminal of the optocoupler 28 The output of the optocoupler 28 is connected to the gate terminal of the triac 29, and the LED 12a in the bar indicator module 12 is driven by the triac 29.

FIG. 7 illustrates another connection form of the LED 12a in the bar display module 12. In contrast to the serial connection of the LED shown in FIG.

The wait time indicator 1 as described above may be used together with traffic signals for vehicles on intersections or crosswalks as well as pedestrians.

Referring to the operation of the present invention configured as described above are as follows.

As shown in FIG. 2, the traffic signal waiting time indicator 1 of the present invention may be attached to a pedestrian-only traffic light provided with a stop light 41 and a pedestrian traffic light 42 installed on both sides of a crosswalk.

When a normal traffic signal controller emits a control signal for selectively driving the stop light 41 and the pedestrian traffic light 42, the signal is transmitted to the traffic light driver 23 in the control circuit 2 shown in FIG. A lighting signal input may be provided to selectively control lighting of the red stop signal light 41 or the green walking signal light 42.

In addition, when the lighting signal input generated from the traffic signal controller is input to the microprocessor 21, the microprocessor 21 sends a control signal to the standby time indicator driving unit 2 at a predetermined time interval set by the timer. do. The wait time indicator driving unit controls the bar indicator module 12 in the wait time indicator 1 to be turned on sequentially after turning on the entire bar indicator module 12 under the control of the microprocessor 21.

For example, when the pedestrian traffic light 42 is turned on, the LEDs 12a of all the bar display modules 12 of the standby time indicator 1 are turned on at the same time from the time when the pedestrian traffic light 42 is turned on, and the bar at the top of the bar as time passes. The indicator module LED goes out gradually from the bottom.

Therefore, the pedestrian crossing pedestrian can know the sequential turn-off state of the LED appearing through the display window 13 of the bar display module 12 in graphic mode, so that appropriate actions can be taken according to the recognition of the remaining time when the crosswalk is passed. will be.

On the other hand, the time on / off time of the waiting time indicator 1 can be set as shown in Table 1 below.

Road width (ft) Passing time 3.2 ft / sec 4.0ft / sec Difference time 30 7.1 6.3 0.8 40 10.0 8.8 1.2 50 12.9 11.3 1.6 60 15.7 13.8 1.9 70 18.6 16.3 2.3 80 21.4 18.8 2.6

Therefore, when manufacturing the traffic signal waiting time indicator, the operation time of the indicator control circuit 2 shown in FIG. 5 is set in accordance with the road width in consideration of Table 1 above, and the value is stored in the memory 24. The bar indicator operating time data according to the road width stored in the memory 24 is read by the microprocessor 21 so that a control value according to the set time value is provided to the waiting time indicator driving unit 22. The output of the time indicator driver 22 causes the bar indicator module in the standby time indicator 1 to turn off sequentially after the temporary light turns on.

The bar indicator module 12 mounted inside the indicator body 11 opens the rear cover 14 as shown in FIG. 3 and separates and fastens the bar body from the indicator body 11 in individual units, that is, bar units. It has a structure that can Therefore, if a failure occurs in any one or more of the bar indicator modules 12, open the rear cover 14, disassemble the screw, disconnect the connector 12c of the corresponding failure bar indicator module, and then replace the new bar indicator. It can be replaced simply by mounting the module and then connecting the bar indicator module and the connector.

The bar indicator module 12 may be configured in total of nine as shown in FIGS. 2 to 4 showing the embodiment.

In addition, the control circuit 2 is activated when a normal traffic signal lighting signal is generated, and withdraws the waiting time data set according to the road width as described above. The proportional bar indicator module 12 is turned off one by one through the waiting time indicator driver 22.

As shown in FIG. 6, the wait time indicator driving unit 22 receives the display control signal DS output from the microprocessor 21 and decodes it to obtain sequential extinction information. Is sent to each of the flip flops 27a to 27n of the flip flop portion 27.

In each flip-flop of the flip-flop unit 27 receives the output of decoding the sequential decay information of the decoder unit 26 to generate a coupler control signal CS to drive the light emitting element of each optical coupler 28, Accordingly, when the output appears from the light receiving element of the optocoupler 28, the triac 29 is turned on by the output to turn on the LED 12a constituting the bar display module 12.

The LED 12a on the LED substrate 12b constituting the individual bar display module 12 is connected to a series circuit with respect to the supply power supply voltages V- and V + as shown in FIG. Is turned on and turned off by turning off the triac.

FIG. 7 shows a state in which the LEDs 12a on the LED substrate 12b constituting the individual bar display module 12 are connected in parallel, not in series, to the supply power supply voltages V- and V +. In this case, any one of the plurality of LEDs may be disconnected to solve a problem in which the entire LED is turned off, thereby preventing the original function of the bar display module 12 from being lost.

In particular, since the bar display module 12 integrates and manufactures tens or hundreds of high-brightness LEDs, high brightness of the display can be obtained, thereby improving visibility and driftiness of pedestrians. In addition, as the remaining waiting time of the traffic signal is displayed in the form of a graphic bar, the danger can be easily recognized when crossing the pedestrian crossing.

The present invention is composed of a bar indicator module in which dozens of hundreds of LEDs are integrated in the waiting time indicator of a traffic signal lamp, and thus have a longer life, easier handling and management, and partial replacement of parts. This will have a beneficial effect on maintenance.

In addition, the present invention has a structure that can be directly attached to the existing pedestrian traffic lights or vehicle traffic lights, so that the entire traffic light system is not required to be replaced, and thus the traffic signal waiting time indicator is easily displayed on the traffic lights at a lower cost than the conventional method. Can be attached.

In addition, the present invention is to immediately display the traffic signal waiting time in the form of a graphic, the unique effect is excellent in visibility.

Claims (1)

A bar display module 12 which forms a graphic bar with an LED substrate in which a plurality of LED elements are integrated and is replaceable for each module; A bar-shaped display base body 11 accommodating a plurality of bar indicator modules in a longitudinal direction; A waiting time indicator (1) including the bar-shaped display base and manufactured to be sized between the existing pedestrian traffic light and the prop; The microprocessor 21 which receives a traffic switching signal from the traffic signal controller as a lighting signal and generates a display control signal DS, and receives the traffic switching signal as a lighting signal and is selective to a stop signal 41 and a walking signal 42. A signal lamp driver 23 for providing an operation signal, a timer 25 for generating time information by dividing a clock frequency generated from a crystal oscillator, and providing the time information to the microprocessor, and an initialization program of the microprocessor and a road width. Memory 24 for storing based on the crossing time data, the standby time indicator driving unit for generating a control signal for completely turning on the bar indicator module 12 under the control of the microprocessor and turn off sequentially over time An indicator control circuit 2 composed of 22; In the traffic signal remaining time display device comprising: The wait time indicator driver 22 inputs a display control signal (DS) generated from a microprocessor to decode sequential extinction information, and receives a decoding output of the decoder to provide an optical coupler for each bar display module. A flip-flop portion 27 composed of a plurality of flip-flops 27a to 27n for transmitting an operation signal to the 28, a triac 29 driven by an output of the optocoupler, and on / off of the triac Waiting time indicator of a traffic light, characterized in that it comprises a LED (12a) for configuring the bar indicator module is turned on and off.