KR0134465Y1 - Traffic signal flickering apparatus using led light emitting device - Google Patents

Abstract

The present invention relates to a traffic signal, and the like, comprising a predetermined number of LED light emitting elements connected in a matrix form, the LED dot matrix flickering under the control of the input row / column signal, and the blinking of the corresponding signal lamp from the traffic signal controller. A signal detection unit for receiving a predetermined lighting signal for detecting and outputting a type of lighting operation, and generating matrix data for controlling the blinking operation of the LED dot matrix according to the lighting operation signal output from the signal detecting unit, The data generation and control unit for generating a blue flashing control signal for the low extinction section and the data generated from the data generation and the control unit receives the LED element inside the LED dot matrix to control the blinking to display the color according to the traffic signal Including LED driver for driving LED dot matrix It is effective to suppress power consumption by providing.

Description

Traffic signal blinker using LED light emitting device

1 is a schematic block diagram according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing details of the dot matrix circuit portion of FIG.

Figure 3 is a (a) and (b) is the overall appearance of a traffic signal and the like according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: signal detection unit 20: data generation and control unit

30: blue conversion warning unit 31: up-down counting unit

32: data mixing unit 40: LED driver

41A: Hang Data Decoder 41B: Column Data Decoder

42: signal branch and control unit 50: LED dot matrix

60: power supply

The present invention relates to a traffic signal, etc. In particular, by driving a display device such as a vehicle and a pedestrian signal using a light emitting diode that is a semiconductor light emitting element, it is possible to express red, yellow, and green signals with a single signal lamp, respectively. The present invention relates to a traffic signal blinker using an LED light emitting device that can effectively reduce power loss due to the use of a semiconductor device.

In general, traffic lights are composed of separate signals for each color to facilitate the traffic flow of the vehicle. Two or more traffic lights and three or more traffic lights are used to display red, yellow, and green signals for a certain period of time. There is a pedestrian traffic light that displays a red and blue signal to control the pedestrian crossing traffic according to the color signal of the vehicle traffic light and the vehicle traffic light that controls the traffic of the vehicle.

In the traffic lights for vehicles and pedestrians as described above, conventionally, only the function of recognizing the blinking of the signal by using the incandescent lamp of the filament type as the blinking of the traffic light has been performed.

Therefore, the use of conventional incandescent lamps not only consumes a lot of power, but also increases the maintenance cost due to the short life span of the filament, as well as the inefficiency and post-installation in which two or more traffic lights must be installed. There was a defect that requires a lot of labor and maintenance in management, and also there is an uneconomical problem that the user is inconvenient as the bulb is damaged or loses the function of the traffic light at the time of power outage.

In addition, the conventional traffic lights simply have a function of recognizing the blinking of the traffic light, so that the pedestrian or the driver of the vehicle cannot recognize when the blue light is turned off, so that the vehicle enters the crosswalk at the moment when the signal changes. Or the pedestrians crossing the crosswalk excessively, and the risk of suffering accidents was high.

Particularly, in the crossing, the pedestrian crossing the crosswalk not only gives the pedestrian anxiety by blinking the blue light of the crossing, but also can not grasp the problem of the traffic light and the time when the blue light is turned off. The pedestrian crossing caused the crossing accident.

An object of the present invention for solving the above problems, by using the dot matrix of the semiconductor light emitting device group can significantly reduce the power consumption of the traffic light, and display a red, yellow, blue signal, etc. by one signal light In this way, it is possible to simplify the structure of the traffic light equipment to provide a saving traffic lights that can reduce the cost of maintenance.

Another object of the present invention is to provide a traffic signal and the like so that the user can be driven by the emergency power even in the sudden dedication of the traffic light so that the user is not inconvenient in life, and another object of the present invention is a blue signal of a pedestrian It is to provide a traffic signal blinker using an LED light emitting device that allows the pedestrians to grasp the remaining time by displaying the time of the count town to cross the crosswalk safely.

A feature of the present invention for achieving the above object is, in the flashing device of the turn signal lamp for expressing the signal according to the signal generated from the traffic signal control area, a predetermined number of LED light emitting elements connected in a matrix form And a LED dot matrix which blinks according to the control of the input row / column signal, a signal detector which receives a predetermined lighting signal for blinking the corresponding traffic light from the traffic signal controller, detects and outputs the type of lighting operation; In accordance with the lighting operation signal output from the signal detection unit generates matrix data for controlling the flashing operation of the LED dot matrix and receives the data for generating a blue flashing control signal for the flashing section of the blue signal received inside the LED dot matrix To control the blinking of the LED device to display the color according to the traffic signal There comprises a LED driving part which drives the LED dot matrix group.

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

1 is a simplified block diagram of a traffic light blinking device using an LED light emitting device according to the present invention, a predetermined number of LED light emitting devices are connected in a matrix form and input a row signal and a column signal. According to the control of the LED dot matrix (50) that operates in a flashing mode and a predetermined lighting signal for flashing the corresponding signal from a traffic signal controller (not shown) is input to detect and output the type of lighting operation. Generates matrix data for controlling the blinking operation of the LED dot matrix 50 according to the signal detecting unit 10 and the lighting operation signal output from the signal detecting unit 10, and controls the blue blinking control of the blinking period of the blue signal. It is generated according to the presence or absence of the blue flashing control signal by receiving the matrix data generated from the data generating signal and the blue 20 control signal generated by the control unit 20. In this case, the blue dot switching unit 30 directly outputs the matrix switching data and the internally generated signal switching warning data, and receives the data output from the blue switching unit 30 to drive the LED dot matrix 50. Power supply unit 60 for supplying the driving power of the LED dot matrix 50 and each circuit unit by receiving the LED driver 40 and the external power, and supplying the operating source of each unit in the case of external power failure by using the charging battery It is configured to include).

Here, the power supply unit 60, the power supply step-down and rectifying unit for receiving the external power supply 110 / 220V to rectify the DC 24V power supply, and outputs the charging power while receiving and charging the DC 24V power supply through the backflow prevention diode. An emergency power supply unit having a charging battery for emergency power, a 24V regulator for stabilizing the output 24V power supply of the charging battery and supplying it to the operating power of the LED matrix, and a 5V power supply for each circuit part driving power by stepping down the 24V power supply. The power supply unit 60 may be configured by a 5V regulator for supplying.

When the blue flashing control signal generated from the data generation and control unit 30 is input to the high state, the blue conversion warning unit 30 is enabled according to the signal and counts down from a preset value. The data mixing unit 32 receives the matrix data generated by the up-down coefficient unit 31 that generates the matrix data according to the value, and generates and outputs new matrix data.

In this case, the data mixing unit 32 is configured to directly output the matrix data generated from the data generation and the control unit 20 when the matrix data is not generated in the up-down coefficient unit 31.

In addition, the LED driver 40 separates the matrix data output from the data mixing unit 32 into column data and row data, and outputs respective data to the signal branch and the controller 42, and the signal branch and the controller. The row data decoder 41A and the signal branch and the control unit 42 which receive the row data output from the 42 and receive the driving power for the corresponding row of the LED of the matrix 50 to blink, are received. D is composed of a thermal data decoder (41B) for receiving the thermal data to input the driving power of the heat for the flashing of the corresponding LED of the LED dot matrix (50).

When described with reference to the accompanying drawings a preferred operation example of a traffic signal blinking device using the LED light emitting device according to the present invention configured as described above are as follows.

The signal detector 10 receives a predetermined lighting signal for blinking a traffic light from the traffic signal controller to generate a pulse signal having a width corresponding to the phase of the lighting signal.

In addition, the signal detection unit 10 is provided with a signal detection and modulation means for modulating and outputting a pulse signal, the data generation and control unit 20 is a signal light output from the signal detection and modulation means in the signal detection unit 10 The lighting period display signals indicating whether or not the flashing light is received are received.

At this time, the data generation and the control unit 20 generates matrix data by dividing the red and yellow flashing sections signals in the flashing time section of the blue signal lamp according to a pre-set programmed command therein. When the blinking signal is recognized, a blue blinking control signal is generated.

The blue flashing control signal generated at this time is maintained in a high state.

The blue flashing control signal generated by the data generation and the control unit 20 is input by the up-down counting unit 31 in the blue switching warning unit 30.

The up-down coefficient unit 31 counts down the flashing time before the blue light is switched to the red light, and generates matrix data according to the signal pulse or counting value counted down by the specified period.

Data generated by the up-down coefficient unit 31 is input to the data mixing unit 32. In the data mixing unit 32, the matrix data generated by the up-down coefficient unit 31 and the data generation and control unit 20 are generated. New matrix data is generated by mixing the matrix data generated from).

However, when matrix data is not generated in the up-down coefficient unit 31, the data is generated and the matrix data generated by the controller 20 is directly output. The matrix data output from the data mixing unit 32 is input to the signal branch and the control unit 42 in the LED driver 40, and the signal branch and the control unit 42 are the column data and the row data of the input matrix data. Output each data separately.

At this time, the row signal output from the signal branch and the controller 42 is input to the row data decoder 41A, which is configured as shown in FIG. 2 to which the received data is attached. The driving voltage is input to the anode terminal of the LED in the corresponding signal line among the row signal lines 41 to 48 of the LED dot matrix 50.

In addition, the thermal signal output from the signal branch and the control unit 42 is input to the column data decoder 41B, which is configured as shown in FIG. 2 to which the received data is attached. A ground potential for blinking an LED diode having a cathode terminal connected to a corresponding signal line among the column signal lines 1 to 16 of the LED dot matrix 50 is input.

Therefore, in the case where the red signal is to be expressed, the signal is output so that the row signal lines 41 to 48 are all high by the row data decoder 41A, and all are high to the column data decoder 41B. A signal is output so that a state is applied, and a low signal is applied only to even-numbered column signal lines 2, 4, 6, ..., 14, 16 of the column signal lines 1-16 by the column data decoder 41B. You can give it.

The rusted signal can be expressed in the same manner as above, and when the red LED and the green LED are both emitted, the yellow signal can be displayed.

In addition, as shown in the overall outline of the traffic light according to the embodiment of the present invention shown in Figure 3 attached, it may also inform the pedestrians the remaining time during the flashing section of the blue signal, which is a blue conversion warning Matrix data indicating the remaining time as a number is generated in the unit 30 and input to the signal branch and the control unit 42.

Claims (2)

In a flashing device such as a signal for expressing a corresponding signal according to a signal generated from a traffic signal controller, a predetermined number of LED light emitting elements are connected in a matrix form and blinking operation is performed according to control of an input row / column signal. LED dot matrix 50 and the; A signal detection unit 10 which receives a predetermined lighting signal for blinking a corresponding signal from the traffic signal controller and detects and outputs a type of lighting operation; Generating data for generating a matrix data for controlling a blinking operation of the LED dot matrix 50 according to a lighting operation signal output from the signal detecting unit 10 and generating a blue blinking control signal for a blinking period of a blue signal; A control unit 20; The LED dot matrix 50 is driven to control the blinking of the LED elements inside the LED dot matrix 50 by receiving the data generation and the data output from the control unit 20 to express colors according to traffic signals. LED driver 40 to make; In response to the presence of the blue blinking control signal and receiving the matrix data generated from the data generation and the control unit 20 and the presence of the blue blinking control signal, the matrix data and the internally generated signal switching warning data are mixed and output. When not present, the blue conversion warning unit 30 directly outputs the received matrix data and inputs the LED data to the LED driver 40, and receives the external power to drive the LED dot matrix 50 and the driving power of each circuit unit. A traffic signal blinking device using an LED light emitting device, characterized in that it comprises a power supply unit 60 for supplying the operation source of each part in the event of an external power failure by using a charging battery. 2. The LED driving unit (40) according to claim 1, further comprising: a signal branch and a control unit (42) for separating the matrix data output from the data mixing unit (32) into column data and row data and outputting data respectively; A row data decoder 41 which receives the row data output from the signal branch and the control unit 42 and inputs driving power of a corresponding row to blink a corresponding LED of the LED dot matrix 50; A row data decoder 41A which receives the row data output from the signal branch and the controller 42 and inputs driving power of the corresponding row to blink the corresponding LED of the LED dot matrix 50; And a column data decoder 41B that receives the column data output from the signal branch and the control unit 42 and inputs driving power of the column to flash the corresponding LED of the LED dot matrix 50. Traffic signal blinker using LED light emitting device.