KR20090010939U - The road signal board of led - Google Patents

Abstract

The present design has a conventional LED road traffic sign made of a point light source, so the distance identification power is reduced due to the dispersion of light, and a separate external power supply must be designed to improve the problem of high installation cost. Solar cell module to generate power and store in storage battery, LED sign for regulatory indication, caution sign, indication sign, auxiliary sign, and LED light on / off by control of LED light emitting module It is composed of LED light emitting control module, which is surface emitting light from the side wall of the light guide plate, and has excellent identification power even from a long distance without dispersing light. The LED driving part is composed of a metal PCB, which is excellent in heat dissipation. Based on voltage drop, battery charge / discharge and LED ON / OFF can be controlled automatically according to the change of ambient light. The purpose is to provide LED road traffic signs through solar light.

Solar cell module, surface light emitting, LED sign, LED light control module

Description

LED road traffic sign through sunlight {THE ROAD SIGNAL BOARD OF LED}

The present invention relates to a LED road traffic sign through sunlight that automatically regulates the power generated from the solar cell module with the LED light emission control module and emits light from the side wall of the light guide plate to provide regulatory indication, caution indication, indication indication, and auxiliary indication. .

Among the facilities on the road, there are regulations, directives, road signs and caution signs. These signs are usually made as luminous roads so that they can be reflected by the headlights of the driving cars so that they can be easily identified. It is common to be attached to curved roads.

However, the conventional display panels as described above are possible only when the distance perceived by the driver reaches a relatively short distance in a construction section or a road for high-speed driving, so that there is a high risk of an accident.

As a design to improve some of these problems, it was conceived to install a light bulb or light emitting diode in a part of the sign and to connect the power supply and to operate the flashing light, but the light bulb type was not practical due to the difficulty in maintenance of the light bulb. When the diode is installed, there is a disadvantage that the installation structure of the light emitting diode is complicated and the discriminating power due to light scattering is poor.

In order to solve this problem, Korean Patent Registration No. 10-0719913 is composed of a front panel, a transparent panel, a figure / letter sheet, a lighting means, a rear panel, a display unit, in particular, the lighting means and the frame forming a bracket on both sides and A plurality of light emitting diodes arranged on a PCB installed inside the frame on both sides thereof, a light guide plate that receives the light of the light emitting diodes from both sides, and irradiates with surface emission; Although surface emitting lighting means comprising a reflecting sheet to be reflected have been proposed,

This has to be designed by introducing a separate external power source, the installation cost is high, there is a problem that the life of the LED is shortened because it does not effectively dissipate heat from a plurality of LEDs.

In order to solve the above problems, the present invention is surface emitting light from the side wall of the light guide plate is very distinguishable even from a long distance without light dispersion, LED driver is composed of a metal PCB, excellent heat dissipation, in the solar cell module without light sensor The purpose of the present invention is to provide a LED road traffic sign through sunlight that can automatically control whether the battery is charged / discharged based on the output voltage drop and whether the LED is on or off according to the change in ambient light.

LED road traffic signs through the solar according to the present invention to achieve the above object,

The first U-shaped bracket is installed at the end of the upper end of the traffic sign rod located on the sidewalk and the roadway, and is coupled with the first L-shaped bracket to the front of the first U-shaped bracket, thereby providing a plurality of solar cells. Solar cell module to generate power in the storage battery)

The second U-type bracket is installed at the lower end of the solar cell module, and is coupled to the second L-type bracket on the front of the second U-type bracket, and the surface is emitted by the control of the LED light emission control module to display the regulatory signs, caution signs, LED signs for indication and auxiliary indications,

A third U-type bracket is installed at the lower end of the LED sign, and is screwed with the front surface of the third U-type bracket, and the DC power accumulated from the solar cell module is compared with the reference set value through a plurality of comparators, and then compared. It is achieved by consisting of an LED light emission control module that controls whether the LED sign on / off according to one output value.

As described above, in the present design, the surface light is emitted from the side wall of the light guide plate, so the light is distinguished at a long distance without dispersing light, and the LED driving unit is composed of a metal PCB, which is excellent in heat dissipation, and is output from the solar cell module without an illuminance sensor. Based on the voltage drop, it is possible to automatically control whether the battery is charged or discharged or whether the LED is turned on or off according to the change in ambient light, thereby improving the illuminance and semi-permanently using, preventing glare, reducing power consumption, etc. Has a good effect.

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

1 is a configuration diagram showing the components of the LED road traffic sign through the solar according to the present invention, which is composed of a solar cell module 10, LED sign 20, LED light emission control module 30 do.

First, the solar cell module 10 according to the present invention will be described.

As shown in FIG. 1, the solar cell module 10 is provided with a first U-shaped bracket 11 at an end of an upper end of a traffic sign rod 5 located on sidewalks and a roadway, and the first U-shaped bracket It is coupled to the first L-shaped bracket 12 to the front of the (11), and serves to generate sunlight in a plurality of solar cells (Solar Cell) 12 to store in the storage battery (battery) (15).

Installation of the solar cell module 10 according to the present invention is installed in the south-facing direction, as shown in Figure 2, the installation angle is installed at 20 ~ 45 ° from the horizon.

Then, the solar cell module 10 is charged through the control of the LED light emission control module 30 when the solar illuminance is charged for a predetermined time or more, when the solar illuminance is 70 ~ 100Lux after charging the power to the switching regulator LED signs are configured to light up automatically.

On the other hand, when the sunlight is incapable of charging, the automatic charging end function and the battery voltage detection are automatically set to turn on the LED sign, and the battery has an over-discharge prevention function and an overcharge prevention function to protect the battery. .

In addition, the built-in battery 15 is configured to have a capacity of 1500 ~ 4500mAh capable of continuously lighting about 4 to 8 days of relief even when sunlight is incapable of charging.

Next, the LED sign 20 is demonstrated.

The LED sign 20 has a second U-shaped bracket 21 is installed at the lower end of the solar cell module 10, the second L-shaped bracket 21-1 and the front of the second U-shaped bracket 21 and Combined, it serves to surface light through the control of the LED light emitting control module 30 to perform regulatory display, attention display, indication display, auxiliary display.

It is composed of an acrylic panel 25, a figure / character sheet paper 26, a light guide plate 27, and a reflective film 28.

The acrylic panel 25 reflects the light emitted from the LED light emitting part to the outside, and the figure / character sheet is attached to the back of the acrylic panel.

The figure / letter sheet 26 is attached to the front or the rear of the acrylic panel to puncture figures or letters so that the rear light is irradiated to the front, which indicates a regulatory mark, a caution mark, an indication mark, and an auxiliary mark. It consists of figures or letters.

The light guide plate 27 is located at the rear of the figure / letter sheet and reflects the emitted light from the LED light emitting part to uniformly transmit it to the front surface of the acrylic panel.

Here, as shown in FIG. 3, the light guide plate 27 forms a groove 21 along a circumferential edge, and a plurality of LED light emitting parts 22 are installed on the sidewall of the groove 21 so that the light guide plate 27 is formed by the LED. It is configured to emit light.

In addition, the LED light emitting unit 22 may be formed of a general PCB or a metal PCB.

In the present invention, a description will be given of the LED light emitting unit 22 composed of a metal PCB (23a).

As shown in FIGS. 4 and 5, the metal PCB 23a is formed with a glass epoxy PCB (23a-1) so that the chip LED 22a is inserted into the front surface of the metal PCB 23a. Here, the chip LED 22a is composed of a power LED.

In addition, a rubber insulating pad 23a-2 is formed at the bottom of the GE (Glass Epoxy) PCB 23a-1, and an aluminum heat sink 23a-3 is formed at the bottom of the insulating pad 23a-2.

In this way, the metal PCB (23a) formed of a rubber insulating pad and aluminum heat sink (23a-3) formed on the bottom of the existing PCB, it is possible to extend the life of the LED weak to thermal characteristics and at the same time malfunction of the device by heat Can be prevented.

Metal PCB (23a) according to the present invention is formed in a long shape in the horizontal direction, the solar cell connection terminals (+,-) to be connected to the battery terminals (+,-) of the solar cell module 10 on one end of both ends ( 15a) is formed and configured to receive power from the solar cell module.

In the present invention, as shown in FIG. 3, the LED light emitting unit 22 may attach the reflective film 28 to the rear and side surfaces of the light guide plate to prevent light passing through the light guide plate and to improve the light emission effect.

Next, the LED light emission control module 30 will be described.

LED light emission control module 30 according to the present invention is installed on the lower end of the LED sign 20, the third U-shaped bracket 31a, the screw coupled to the front surface of the third U-shaped bracket (31a), the solar cell module After comparing the DC power accumulated from the (10) with the reference set value through a plurality of comparators, and controls the LED sign on / off according to the compared output value.

As shown in FIG. 4, the charging unit 31, the switching regulator 32, the central controller 33, the first comparator 34, the second comparator 35, the third comparator 36, and the fourth The comparator 37 and the constant current driver unit 38 are configured.

The charging unit 31 serves to charge the battery by adjusting the DC power generated from the solar cell module according to the rated voltage of the battery.

As shown in FIG. 7, it is composed of a lead-acid battery having a capacity of 10 Ah, thereby stably receiving and charging a constant current necessary for the LED light emitting unit from the constant current driver unit.

The switching regulator 32 serves to supply power charged through the charging unit to each device.

This includes a switching regulator IC, as shown in FIG.

That is, the power output from the charging unit is smoothed through the capacitors C12 and C13 and then flows into the input terminal Vin of the switching regulator IC.

In addition, the switcher regulator IC outputs an input voltage of 12V to each device.

The central control unit 33 compares the DC power accumulated from the solar cell module with a reference set value through a plurality of comparators, and whether the charging, charging and discharging blocking, LED light emitting unit is turned on / off with the compared output value Serves to control.

As shown in FIG. 7, it is composed of PIC16F84, and the input terminal IN + of the DC-DC converter IC is connected to the output terminal RA0 to output a constant current output signal, and the metal PCB 23a is connected to the output terminal RA1. Outputs the chip LED driving signal, and the output terminal of the first comparator is connected to the input terminal RB0 through the resistor R12 to receive the output value comparing the voltage of the solar cell module with the battery reference set value, and the resistor R13 to the input terminal RB1. The output terminal of the second comparator is connected to receive the output value comparing the voltage of the solar cell module with the reference setting value for illuminance detection, and the output terminal of the third comparator is connected to the input terminal RB2 through the resistor R14 to overcharge the reference voltage of the battery. The output value of the fourth comparator is connected to the input terminal RB3 through the resistor R15, and the output value is compared with the over-discharge reference set value. Configured to receive input.

The first comparator 34 checks the voltage of the solar cell module in real time, compares the output voltage with a battery reference set value, and informs the central controller whether the battery is charged / discharged using the compared output value.

As shown in FIG. 7, the voltage of the solar cell module is divided into voltages through the resistors R1 and R2 connected in parallel, and the voltage-divided value is input to the positive input terminal of the comparator U1A, and the reference voltage source Input voltage divided by resistor R6 at (Voltage reference) to (-) terminal of comparator (U1A) to output comparison set value output value, and input the output value to input terminal RB0 of central control unit through resistor R12.

The second comparator 35 checks the voltage of the solar cell module in real time, compares the output voltage with a reference setting value for illuminance sensing, and informs the central control unit whether the LED light-emitting unit is on / off by using the compared output value. Play a role.

As shown in FIG. 7, the voltage of the solar cell module is divided into voltages through the resistors R1 and R2 connected in parallel, and the voltage-divided value is input to the (+) input terminal of the comparator U1B, and the reference voltage source Input voltage divided by resistor R7 at (Voltage reference) to negative terminal of comparator (U1B) to output the comparison set value output value, and input the output value to input terminal RB1 of central control unit through resistor R13.

The third comparator 36 checks the voltage of the battery in real time and compares it with the overcharge reference set value. The third comparator 36 informs the central control unit whether the LED light-emitting unit is on / off by using the compared output value.

As shown in FIG. 7, the voltage of the battery is divided by the resistors R3 and R4 connected in parallel, and the voltage-divided value is input to the positive input terminal of the comparator U2A, and a voltage source In the reference), the voltage divided by the resistor R8 is input to the negative terminal of the comparator U2A to output the comparison set value output value, and the output value is input to the input terminal RB2 of the central control unit through the resistor R14.

The fourth comparator 37 checks the voltage of the battery in real time and compares it with the over-discharge reference set value. The fourth comparator 37 informs the central control unit whether the LED light-emitting unit is on / off by using the compared output value.

As shown in FIG. 7, the voltage of the battery is divided into voltages through the resistors R3 and R4 connected in parallel, and the voltage-divided value is input to the positive input terminal of the comparator U2B, and a voltage source (Voltage) In the reference), the voltage divided by the resistor R9 is input to the negative terminal of the comparator U2B to output the comparison set value output value, and the output value is input to the input terminal RB2 of the central control unit through the resistor R14.

The constant current driver 38 serves to output a constant illuminance by stably supplying a constant current to the LED light emitting part through the control of the central controller.

 This is converted to DC power through the DC-DC converter IC, rectified through the zener diode D2, and flows into the input terminal Vin of the constant current driver IC LM7805, as shown in FIG.

At this time, in the constant current driver IC, 5V ~ 12V flows into 5V and outputs it to the charging unit.

The LED light emitting control module according to the present invention having such a configuration does not enter a separate illuminance sensor, and provides a reference set value for turning on / off LED signs by determining the illuminance of the surroundings with a solar cell module.

That is, the solar cell module, when the ambient light (sunlight) is low in nature, the output voltage is lowered, the strength of the ambient light is determined by grabbing the reference.

That is, the voltage of the solar cell module is checked in real time through the second comparator, and the output voltage is compared with the reference setting value for illuminance detection, and the output value informs the central control unit whether the LED light-emitting unit is on or off.

At this time, the central control unit determines the intensity of the ambient light to determine whether the LED light-emitting unit on / off.

In addition, the overall driving method of the LED road traffic sign through the solar according to the present invention is that the solar cell module receives the sunlight during the day and charges the power to the battery through the charging unit, the ambient illumination falls below a certain level, the system The built-in central control unit automatically turns on the LED light emitting part of the LED sign with the automatic termination of charging.

On the contrary, if the ambient illumination is above a certain level, the LED traffic sign is automatically turned off to determine whether the charging mode is switched.

1 is an embodiment showing the installation state of the LED road traffic sign through the solar according to the present invention,

Figure 2 is an embodiment showing the installation state of the solar cell module of the components of the LED road traffic sign through the solar according to the present invention,

3 is a configuration diagram showing the components of the LED signage of the LED road traffic sign configuration through the solar according to the present invention,

Figure 4 is an embodiment showing the components of the metal PCB of the LED road traffic sign configuration through the solar according to the present invention,

5 is a structural diagram showing the components of the metal PCB of the LED road traffic sign configuration through the solar according to the present invention,

Figure 6 is a block diagram showing the components of the LED light emitting control module of the LED road traffic sign configuration through the solar according to the present invention,

Figure 7 is a circuit diagram showing the components of the LED light emitting control module of the LED road traffic sign configuration through the solar according to the present invention.

※ Brief description of reference numerals ※

10: solar cell module 20: LED signs

30: LED light emitting control module 31: charging unit

32: switching regulator unit 33: central control unit

34: first comparator 35: second comparator

36: third comparator 37: fourth comparator

38: constant current driver

Claims (5)

The first U-shaped bracket 11 is installed at the end of the upper end of the traffic sign rod 5 located on the sidewalk and the roadway, and is coupled to the first L-shaped bracket 12 toward the front of the first U-shaped bracket 11. And, the solar cell module 10 for generating sunlight in a plurality of solar cells (Solar Cell) 12 and stored in the storage battery, The second U-shaped bracket 21 is installed at the lower end of the solar cell module 10, and is coupled to the second L-shaped bracket 21-1 toward the front of the second U-shaped bracket 21 to control the LED light emission. LED signs 20 for surface display through control of the module 30 and for regulatory indication, caution indication, indication indication, and auxiliary indication, The third U-shaped bracket 30a is installed at the lower end of the LED sign 20, and is screwed with the front surface of the third U-shaped bracket 30a to store a plurality of DC power accumulated from the solar cell module 10. After comparing with the reference set value through the comparator, LED road traffic sign through the solar light, characterized in that consisting of the LED light control module 30 for controlling whether the LED sign on / off according to the output value. According to claim 1, LED sign 20 is formed in the groove 21 along the periphery of the edge of the light guide plate 25, a plurality of LED light emitting portion 22 is provided on the side wall of the groove 21 is installed in the LED LED road traffic sign through the sunlight, characterized in that configured to be surface-emitting by. The LED light emitting part 22 is formed of a glass epoxy PCB (23a-1) so that the chip LED (22a) is inserted in the front surface, the glass epoxy PCB (23a-1) of the GE A rubber insulating pad 23a-2 is formed at a lower end of the insulating pad 23a-2, and an aluminum heat sink 23a-3 is formed at the bottom of the metal PCB 23a. LED road traffic signs. According to claim 1, LED light emission control module 30 is a charging unit 31 for charging the battery by adjusting the DC power generated from the solar cell module according to the rated voltage of the battery, A switching regulator unit 32 for supplying power charged through the charging unit to each device, After comparing the DC power accumulated from the solar cell module with the reference set value through a plurality of comparators, the central control unit (33) for controlling the charging, charging and discharging blocking, whether the LED light emitting unit is turned on or off with the output value )Wow, A first comparator 34 which checks the voltage of the solar cell module in real time, compares the output voltage with a reference set value for battery charging and discharging, and informs the central control unit whether the battery is charged or discharged with the compared output value; The second comparator 35 which checks the voltage of the solar cell module in real time, compares the drop of the output voltage with a reference setting value for driving LED, and informs the central control unit whether the LED light-emitting unit is on or off by using the compared output value. Wow, A third comparator 36 which checks the voltage of the battery in real time and compares it with the overcharge reference set value and informs the central control unit whether the LED light-emitting unit is on or off by using the compared output value; A fourth comparator 37 which checks the voltage of the battery in real time and compares it with the over-discharge reference set value and informs the central control unit whether the LED light-emitting unit is on or off by using the compared output value; LED road traffic sign through the solar light, characterized in that consisting of a constant current driver unit 38 to supply a constant current to the LED light emitting part stably through the control of the central control unit to output a uniform illuminance. 5. The chip LED driving signal of claim 4, wherein the central control unit is connected to an output terminal RA0 and an input terminal IN + of the DC-DC converter IC to output a constant current output signal, and a metal PCB 23a is connected to the output terminal RA1. The output terminal of the first comparator is connected to the input terminal RB0 through the resistor R12 to receive the output value comparing the voltage of the solar cell module with the battery reference set value, and the output terminal of the second comparator through the resistor R13 to the input terminal RB1. It is self-connected and receives the output value comparing the voltage of the solar cell module with the reference value for illuminance detection, and the output terminal of the third comparator is connected to the input terminal RB2 through the resistor R14 to compare the output voltage of the battery with the overcharge reference set value. The output terminal of the fourth comparator is connected to the input terminal RB3 through the resistor R15, and is configured to receive an output value comparing the voltage of the battery with the over-discharge reference set value. LED road traffic signs with solar featuring.

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