KR101117210B1 - Snow removal apparatus of led traffic light - Google Patents

Abstract

PURPOSE: A snow-removing apparatus for an LED traffic signal lamp is provided to effectively eliminate snow piled up on a lens by heating a coil installed on the lens. CONSTITUTION: A voltage detection and rectification part(100) detects and rectifies supplied voltage. A constant voltage part(200) supplies constant voltage to a light emitting diode and a light receiving diode. A switching part(300) outputs a power supply signal. A first rectifier(500) rectifies a supplied power source with commercial voltage for a first time. A second rectifier(700) rectifies the supplied power source with direct current voltage for a second time. A power factor control part(800) controls a power factor of the supplied power source. A feedback part(900) controls the output of the rectified supplied power source. A reference voltage detection part(1000) detects reference voltage of the supplied power source. The reference voltage detection part supplies the reference voltage to a heating coil.

Description

LED traffic light snow removal device {SNOW REMOVAL APPARATUS OF LED TRAFFIC LIGHT}

The present invention relates to an LED traffic light snow removal apparatus that can sense snow accumulated in a lens of a traffic light and heat the snowing coil installed in the lens to remove snow.

In the recent lighting market, the market is moving around LED lighting which has the advantages of bright efficiency and long life, and the government prefers items with short payback period such as traffic lights, induction lamps and halogens due to the government's plan to supply LED lighting equipment. It is spreading.

In particular, when traffic lights are replaced with LED products of less than 10W, the payback period is short, about 1.8 years, which is very efficient.In case of replacing fluorescent lamps, incandescent lamps, halogen lamps, and street lamps with LED lighting products, The payback period is calculated within 10 years.

On the other hand, because the LED traffic light does not generate heat due to the characteristics of the LED, snow accumulated on the light emitting area of the traffic light covers the lens, and drivers or pedestrians cannot see the traffic signal, causing confusion, which may cause traffic accidents. In addition, by removing the snow accumulated in the lens, both the inconvenience and risks at the same time.

The present invention is to provide an LED traffic light snow removal apparatus that can effectively remove the snow accumulated on the lens by heating the heating coil installed in the lens in response to the operation of the traffic light.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

According to an embodiment of the present invention, when the LED signal light is turned on, the voltage detection and rectifying unit detects and rectifies and outputs the supplied voltage, and converts the output voltage into a constant voltage to the light emitting diode and the light receiving diode through the first connector. Switching for outputting the power supply signal when a high voltage is applied from the first connector without applying a power supply signal when a low voltage signal is supplied from the first connector and the constant voltage unit to be supplied. A power supply switching unit which cuts off power supply when the power supply signal is not applied, and outputs supply power when the power supply signal is applied, a first rectifying unit and a second rectifying unit rectifying the supply power; A power factor adjusting unit for adjusting the power factor of the power supply, a feedback unit for controlling the output of the rectified power supply, and the output Traffic signal control including a reference voltage detector for detecting a reference voltage of a source and supplying it to a heating coil through a second connector, and a controller for controlling the first rectifier and the second rectifier, a power factor adjusting unit, a feedback unit, and a reference voltage detector. An apparatus may be provided.

In the present invention, when snow is accumulated on the LED traffic lights, the heating coil can be supplied with power to easily remove snow accumulated on the corresponding traffic lights, and power is supplied to other traffic lights even when snow is accumulated on any one of the plurality of traffic lights. By supplying power to the heating coil, the power supply of the heating coil can be maintained until the eyes are completely removed.

In addition, when the snow is not accumulated, the AC input power can be easily cut off so that power is not supplied to the heating coil, thereby reducing the power consumption.

1 is a circuit diagram of an LED traffic light snow removal apparatus according to an embodiment of the present invention,
2 is an operation flowchart of the LED traffic light snow removal apparatus according to an embodiment of the present invention.

Advantages and features of the embodiments of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the embodiments of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be based on the contents throughout this specification.

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

1 is a circuit diagram of an LED traffic light snow removal apparatus according to an embodiment of the present invention.

1, the LED traffic light snow removing apparatus according to an embodiment of the present invention includes a voltage detection and rectifying unit 100, a constant voltage unit 200, a switching unit 300, a power input switching unit 400, and a first rectifying unit. The controller 500 may include a control unit 600, a second rectifier 700, a power factor adjuster 800, a feedback unit 900, a reference voltage detector 1000, a third rectifier 1100, and the like.

When the LED signal lamp is turned on, the voltage detection and rectifying unit 100 detects and rectifies and outputs the voltage supplied through the AC-L line and the AC-N line.

The constant voltage unit 200 converts the voltage output from the voltage detection and rectifying unit 100 into a constant voltage and supplies the converted voltage to the light emitting diode and the light receiving diode through the first connector CN4.

When the low signal is applied from the first connector CN4, the switching unit 300 does not output the power supply signal. When the high signal is applied from the first connector CN4, the switching unit 300 supplies the power supply signal. When the LED traffic signal does not collect snow, a low signal is applied when there is little change in light of the light emitting diode and the light emitting diode connected to the first connector CN4, and Q4 is turned on according to the application of the low signal. (on), Q3, U4A, and U5A are turned off and do not output a power supply signal.

In addition, the switching unit 300 receives a high signal when there is a change in the light of the light emitting diode and the light emitting diode connected to the first connector CN4 due to snow accumulated on the LED traffic signal lamp. Off, Q3 and U4A and U5A can be turned on to output a power supply signal.

The power input switching unit 400 cuts off the power supply when the power supply signal is not applied, and outputs the supply power when the power supply signal is applied. If the power supply signal is not applied from the switching unit 300, the triac When the power supply signal is applied from the switching unit 300 without turning on the power supply Q1 and the triac Q2, the triac Q1 and the triac Q2 may be turned on to output the supply power.

The first rectifier 500 rectifies the power supply first, and rectifies and outputs the output power supply at commercially available 220V / 60Hz.

The controller 600 controls the first rectifying unit, the second rectifying unit, the power factor adjusting unit, the feedback unit, and the reference voltage detector, and may control the power supply output to the heating coil through the second connector CN3.

The second rectifying unit 700 is to rectify the supply power as a second rectification, and secondly rectifies the supply power output through the first rectifying unit 500 to a DC voltage and output the rectified power.

The power factor adjusting unit 800 adjusts the power factor of the power supply and may improve the power factor by adjusting phase angles through D5, L2, and D6 during the second rectification through the second rectifier 500.

The feedback unit 900 controls the output of the rectified supply power, and outputs the supply power output through the second rectifying unit 700 by controlling the output voltage to DC 24V.

The reference voltage detector 1000 detects the reference voltage of the output power supply and supplies it to the heating coil through the second connector CN3. The reference voltage of the power supply output from the feedback unit 900 (that is, DC 24V) ) Is supplied to the heating coil connected to the second connector (CN3).

The third rectifier 1100 rectifies and outputs a separate power supplied through the third connector CN2 connected to another traffic light, and the snow is accumulated on any one of a red traffic light, a yellow traffic light, a green traffic light, and an arrow traffic light. In this case, power may be supplied through the third connector CN2 while supplying power to the heating coil of the corresponding signal lamp.

That is, the third rectifier 1100 rectifies such a separate power source, second rectifies the second rectifier 700, adjusts the power factor in the power factor adjusting unit 800, and controls the output voltage in the feedback unit 900. The reference voltage detector 1000 may detect the reference voltage and supply a separate power source to the heating coil connected to the second connector CN3.

Therefore, when snow is accumulated on the LED traffic lights, the heating coil can be powered to easily remove snow accumulated on the corresponding traffic lights, and even when snow is accumulated on any one of the plurality of traffic lights, power is supplied to the other traffic lights. By powering the coil, it is possible to maintain the power supply of the heating coil until the eyes are completely removed.

In addition, when the snow is not accumulated, the AC input power can be easily cut off so that power is not supplied to the heating coil, thereby reducing power consumption.

Next, when the LED traffic light is turned on in the LED traffic light snow removing apparatus having the above-described configuration, the supplied voltage is detected, rectified and outputted, and the output voltage is converted into a constant voltage to light-emitting diodes and light-receiving through the first connector. Supplying a diode, when a high signal is applied from the first connector, outputs a power supply signal, outputs the supply power according to the power supply signal, rectifies while adjusting the power factor of the supply power, and outputs the output of the rectified supply power. The process of controlling and supplying a reference voltage to the heating coil through the second connector will be described.

2 is an operation flowchart of the LED traffic light snow removal apparatus according to an embodiment of the present invention.

Referring to FIG. 2, when the LED signal lamp is turned on (step 202), the voltage detection and rectifying unit 100 detects and rectifies and outputs the voltage supplied through the AC-L line and the AC-N line (step 204). ).

The constant voltage unit 200 converts the voltage output from the voltage detection and rectifying unit 100 into a constant voltage and supplies the converted voltage to the light emitting diode and the light receiving diode through the first connector CN4 (step 206).

The switching unit 300 checks whether a low signal or a high signal is applied according to the change of the light of the light emitting diode and the light emitting diode connected to the first connector CN4 (step 208).

As a result of checking in the step 208, when the LED traffic signal light does not accumulate, when the low signal is applied because there is little change in the light of the light emitting diode and the light emitting diode connected to the first connector CN4, the switching unit ( At 300) Q4 is on and Q3, U4A and U5A are off to output no power supply signal (step 210).

When the power supply signal is not applied from the switching unit 300, the power input switching unit 400 turns off the triac Q1 and the triac Q2 to not supply power (step 212).

On the other hand, as a result of the check in the step 208, the snow is accumulated in the LED traffic signal, the light of the light emitting diode and the light emitting diode connected to the first connector (CN4) is changed, the switching unit 300 when the high signal is applied Q4 is turned off, and Q3, U4A and U5A are turned on to output a power supply signal (step 214).

When a power supply signal is applied from the switching unit 300, the power input switching unit 400 turns on the triac Q1 and the triac Q2 to output the supply power (step 216).

The first rectifier 500 first rectifies and outputs the supply power output from the power input switching unit 400 to commercially available 220V / 60Hz (step 218).

In operation 220, the second rectifier 700 performs secondary rectification on the DC power supply through the first rectifier 500. In this case, the power factor adjusting unit 800 may improve the power factor by adjusting phase angles through D5, L2, and D6 during the second rectification through the second rectifying unit 500.

The feedback unit 900 controls and outputs the output power supplied through the second rectifier 700 to a DC of 24V (step 222).

The reference voltage detector 1000 detects a reference voltage of the power supply output from the feedback unit 900 (ie, DC 24V) and supplies power to the heating coil connected to the second connector CN3 (step 223v).

Meanwhile, in the third rectifying unit 1100, even when snow is accumulated in any one of the red, yellow, green, and arrow signals, the third rectifier 1100 supplies power to the heating coil of the corresponding signal lamp and also through the third connector CN2. Power can be supplied.

That is, the third rectifier 1100 rectifies such a separate power source, second rectifies the second rectifier 700, adjusts the power factor in the power factor adjusting unit 800, and controls the output voltage in the feedback unit 900. The reference voltage detector 1000 may detect the reference voltage and supply a separate power source to the heating coil connected to the second connector CN3.

Therefore, when snow is accumulated on the LED traffic lights, the power supply to the heating coil can be easily removed, and when the snow is not accumulated, the AC input power can be easily cut off so that the heating coil is not supplied with power. The effect of power reduction can be obtained.

In addition, even when snow is accumulated in any one of the plurality of traffic lights, power is supplied to the other traffic lights to supply power to the heating coil, thereby maintaining the power supply of the heating coil until the snow is completely removed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent that such substitutions, modifications, and alterations are possible.

100: voltage detection and rectification unit 200: constant voltage unit
300: switching unit 400: power input switching unit
500: first rectifying unit 600: control unit
700: second rectifying unit 800: power factor adjustment unit
900: feedback unit 1000: reference voltage detector
1100: third rectifier

Claims (2)

When the LED signal light is turned on, the voltage detection and rectification unit for detecting, rectifying and outputting the supplied voltage,
A constant voltage unit converting the output voltage into a constant voltage and supplying the light emitting diode and the light receiving diode through a first connector;
A switching unit which outputs the power supply signal when a low signal is applied from the first connector, but does not output a power supply signal, and when a high signal is applied from the first connector;
A power input switching unit which cuts off power supply when the power supply signal is not applied and outputs supply power when the power supply signal is applied;
A first rectifier for first rectifying the supply power to a commercial voltage;
A second rectifier for second rectifying the supply power rectified through the first rectifier to a DC voltage;
A power factor adjusting unit for adjusting the power factor of the power supply rectified by the second rectifying unit;
A feedback unit controlling an output of the rectified power supply;
A reference voltage detector detecting the output reference voltage of the supplied power supply and supplying the heating voltage to a heating coil through a second connector;
Control unit for controlling the first and second rectifier, power factor adjustment unit, feedback unit, reference voltage detector
LED traffic light snow removal device comprising a.
The method of claim 1,
The LED traffic light snow removing device,
Further comprising a third rectifier for rectifying the separate power supplied through the third connector connected to the other traffic light and outputs to the second rectifier,
LED traffic light snow removing device, characterized in that for supplying the separate power to the heating coil through the second rectifier, power factor adjustment unit, feedback unit, the reference voltage detector.

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