KR0157930B1 - Control device of traffics display - Google Patents

Abstract

The present invention relates to a control device of a traffic sign, which comprises a combination of the voltage of the solar cell and the light sensor to prevent the malfunction of the traffic sign caused by the lights of the street lights or the lights of the vehicle at sunset and the light emitting device to the traffic sign at sunset By selectively irradiating the light source in the up, down, left and right directions, traffic signs are clearly displayed.

The present invention as described above and the light detection means for detecting the sunrise, sunset; Comparing the voltage according to the sunrise and sunset detected by the light detecting means with the voltage obtained by the solar panel means and the charging voltage thereof, the battery is prevented from overcharging and overdischarging, and the charging voltage is periodically checked at sunset. Generating sign control means; According to the voltage obtained by the sign control means is achieved by consisting of a sign that guides the display by directing or refracting light in a depressed letter or figure with a certain angle on its own.

Description

Traffic signs

1 is a block diagram of a conventional traffic sign control device.

2 shows an example of a traffic sign according to FIG.

3 is a front view of the traffic sign of FIG. 2,

(b) is the right side of a traffic sign.

Figure 4 is a block diagram showing a control device of the present invention traffic sign.

5 is a block diagram showing the sign control means in more detail in FIG.

FIG. 6 is an exemplary view showing the sign shown in FIG. 4 in more detail.

7 is a plan view of the sign shown in FIG.

8 is a cross-sectional view taken along the line A-A of the sign shown in FIG.

9 is a rear view of the sign shown in FIG.

FIG. 10A is an enlarged view showing part B of FIG. 6 in more detail.

(b) is an enlarged view showing part C of FIG. 6 in more detail.

FIG. 11 is a graph illustrating characteristics of a solar cell provided in the solar cell panel of FIG. 4.

* Explanation of symbols for main parts of the drawings

200: solar cell panel portion 201: storage battery

202: light sensor comparator 203: switching driver

204: first switching unit 205: second switching unit

206: light emitting means 207: signs

208: low voltage comparison unit 209: voltage detection comparison unit

210: light sensor 211: sign control means

The present invention relates to a control apparatus for road traffic signs and billboards, and more particularly, to engrave a desired letter or picture on a transparent acrylic plate and use the solar cell to charge a solar cell during the day while charging the storage battery. The present invention relates to a control device of a traffic sign that automatically operates a light emitting device at a time to emit light in a letter or a picture carved on the transparent acrylic plate.

In general, road traffic signs or commercial billboards are merely for the purpose of traffic guidance and road guidance or advertising, the shape of the picture for the light emitting device to apply light-emitting paint or general paint on the surface of the sign or billboard or to inject light or It is placed in the form of letters and used for the purpose of traffic guidance, road guidance or commercial advertising during the day or night.

FIG. 1 is a configuration diagram of a conventional traffic sign control apparatus, and FIG. 2 is a view showing an example of a traffic sign according to FIG. 1, and FIGS. 3A and 3B are front views of traffic signs of FIG. As a right side view, as shown therein, a solar cell panel unit 100 for converting solar energy into electrical energy; A storage battery 101 which receives the voltage generated by the solar cell panel unit 100 through a diode D1 and charges it; A solar cell detector 102 which detects a voltage generated from the solar cell panel unit 100 and determines sunrise and sunset; A switching driver 103 generating a switching voltage according to the sunrise and sunset of the solar cell detector 102; A first switching unit 104 for selecting and outputting a voltage of the solar cell panel unit 100 or a voltage of the storage battery 101 according to the switching voltage generated by the switching driver 103; A control signal generator 105 for generating a control signal by the selection voltage through the first switching unit 104; A second switching unit 106 for blocking the voltage of the storage battery 101 at sunrise and bypassing the voltage of the storage battery 101 at sunset according to the control signal of the control signal generator 105; The light emitting display unit 107 which emits and displays a plurality of light emitting elements 107a mounted on the front surface of the traffic sign 108 of FIG. 2 by the voltage of the storage battery 101 through the second switching unit 106. Consists of.

Conventional traffic sign control device configured as described above, the solar cell provided in the solar cell panel unit 100 converts the energy of sunlight into electrical energy to supply to the solar cell detection unit 102 and through the diode (D1) The storage battery 101 is charged.

The solar cell detector 102 detects the voltage generated from the solar cell panel unit 100 to determine sunrise and sunset.

That is, when the voltage from the solar cell panel unit 100 is supplied below a predetermined level, it is determined as sunset, and when it is above a predetermined voltage, it is determined as sunrise.

If it is determined that the sunrise in the above described operation of the switching drive 103 is stopped to switch the first switching unit 104 to the solar cell panel unit 100.

Therefore, the voltage generated from the solar cell panel unit 100 is charged to the storage battery 101 through the diode D1 and is input to the control signal generator 105 through the first switching unit 104.

Therefore, the control signal generator 105 periodically switches the second switching unit 106 to the solar cell panel unit 100 by the input voltage of the solar cell, as shown in FIG. The light emitting device 107a of the light emitting display unit 107 attached to the front surface periodically blinks to provide road guidance and traffic guidance.

In addition, when it is determined that sunset is detected by the solar cell detecting unit 102, the switching driving unit 103 operates to switch the first switching unit 104 toward the storage battery 101.

Therefore, after sunset, the voltage of the storage battery 101 is supplied to the control signal generator 105 through the first switching unit 104.

The control signal generator 105 generates a control signal according to the voltage supplied from the first switching unit 104 to periodically switch the second switching unit 106 toward the storage battery 101, thereby storing the storage battery 101. As shown in FIG. 2 through the second switching unit 106, the light emitting element 107a of the light emitting display unit 107 mounted on the front of the traffic sign 108 periodically blinks to provide road guidance and traffic guidance. Done.

However, such a conventional traffic sign cannot display the form of letters or figures since the light emitting device of the light emitting display emits light toward the front, and there is no overcharge protection function of the charging unit that charges the battery generated power from the solar cell. In addition to the problem of lifespan, the voltage generated from the solar cell is driven by detecting the sunrise and sunset of the sun. If the voltage is generated from the solar cell by the light source or the light of the street lamp near the installation place, it may malfunction. There is a problem in that the installation place will be limited.

Accordingly, an object of the present invention in view of such a conventional problem, by combining the voltage of the solar cell and the light sensor to prevent the malfunction of traffic signs caused by the lights of street lights or vehicle lights at sunset and traffic signs at sunset According to the present invention, there is provided a control apparatus for a traffic sign that selectively emits a light source of a light emitting device in up, down, left, and right directions so that the traffic sign is clearly displayed.

Another object of the present invention is to protect the overcharge by automatically blocking the charging voltage when the battery is fully charged in consideration of the charging characteristics of the battery and the oscillation characteristics of the solar cell.

The control device of the traffic sign for achieving the object of the present invention comprises a light detection means for detecting the sunrise, sunset; Comparing the voltage according to the sunrise and sunset detected by the light detecting means with the voltage obtained from the solar cell panel means and the charging voltage thereof, the battery is prevented from being overcharged and overdischarged, and the charging voltage is periodically checked at sunset. Generating sign control means; Light emitting means periodically blinking in accordance with the voltage obtained by the sign control means; According to the blinking of the light emitting means is achieved by a display panel for directing or refracting the light to the intaglio (또는) letter or figure with a certain angle on the display guide.

Still another means for achieving the object of the present invention includes rectifying means for converting the input AC power source into a constant voltage of a constant level; Light detecting means for detecting sunset and sunrise; Switching means for switching in accordance with the voltage of the light detecting means to supply a voltage of the rectifying means; An oscillation driving means for generating an oscillation voltage by the voltage supplied from the switching means; Light emitting means periodically blinking by an oscillation voltage of the oscillation driving means; It is achieved by a sign that displays the light of the light emitting means straight or refracted in the engraved letters and figures having a predetermined angle, will be described in detail below with reference to the accompanying drawings of the present invention.

4 is a block diagram showing the control device of the traffic sign of the present invention, as shown in the solar cell panel unit 200 for converting the energy of sunlight into electrical energy; An optical sensor unit 210 for detecting sunset and sunrise; Comparing the voltage according to the sunrise and sunset detected by the optical sensor unit 210 with the voltage generated by the solar panel 200 and its charging voltage to prevent overcharge and over-discharge of the battery Sign control means 211 for periodically generating a charging voltage at sunset; Light emitting means (206) consisting of a plurality of light emitting elements (LED1-LED4) which blink in accordance with a voltage periodically generated by the sign control means (211); It consists of a sign 207 to guide the display by directing or refracting the direction of light generated by the light emitting means 206 in the engraved letters or figures having a certain angle of its own.

As shown in FIG. 4 and FIG. 5, the sign control means 211 includes: a storage battery 201 that receives and charges the voltage generated by the solar cell panel unit 200 through the diode D1; A reference voltage generator 212 composed of resistors R1-R4, zener diodes ZD1, and variable resistors VR1 and VR2 to generate a reference voltage; A low voltage including a resistor R6, a diode D2, and a first comparator 208a which compares the reference voltage generated by the reference voltage generator 212 with the voltage discharged from the battery 201 and outputs the resultant voltage. A comparison unit 208; The resistor R5, the second comparator 202a, and the zener diode ZD2 which compare the voltage generated by the solar cell panel unit 200 with the voltage detected by the optical sensor unit 210 and output the resulting voltage. An optical sensor comparator 202 formed; Detects the voltage generated by the solar cell panel unit 200, compares the detected voltage with a voltage inputted by the low voltage comparator 208 and the optical sensor comparator 202 and outputs the resulting voltage. A voltage detection comparison unit 209 including third and fourth comparators 209a and 209b, resistors R7-R16, and diode D4; A first switching unit 204 which is a transistor Q1 switched according to the voltage output from the voltage detection comparison unit 209; A switching driver (203) comprising a timer (203a), a resistor (R17-R19), and a capacitor (C1) (C2), which are driven by the first switching unit (204) and periodically generate a voltage at a constant time constant; A second switch including a transistor (Q2) (Q3) and a resistor (R21) for periodically switching according to the voltage generated by the second switching driver 203 to blink the light emitting elements (LED1-LED4) of the light emitting means (206). It comprises a switching unit 205.

In addition, the sign 207 is a transparent acrylic plate 207a having a predetermined thickness and a predetermined length, as in FIGS. 6 to 10; Display means (207b) in which a desired character or figure is engraved at a predetermined angle on a back surface of the acrylic plate (207a); A light emitting member 207c applied to the engraved display means 207b; Light emitting means (206) mounted on the left and right and top and bottom sides of the acrylic plate (207a) to display letters or figures engraved on the display means (207b) for periodically scanning light; It is attached to the rear surface of the light emitting member 207c and consists of a background plate 207d for preventing the light emitted from the light emitting means 206. In the drawing, reference numeral 213 denotes a printed circuit board.

When described in detail with reference to Figure 4 to Figure 11 the effect of the present invention configured as described above.

First, the solar cell of the solar cell panel unit 200 converts sunlight into electrical energy to charge the storage battery 201 through the diode D1, and also the low voltage comparator 208 and the optical sensor comparator 202. Will be entered.

At this time, the optical sensor unit 210 detects the sunrise and sunset of the sun and inputs it to the optical sensor comparator 202.

Meanwhile, the low voltage comparator 208 compares the reference voltage generated by the reference voltage generator 212 with the voltage of the battery 201 to output a high signal when the voltage of the battery 201 is low. .

The high signal output from the low voltage comparator 208 is input to the voltage detection comparator 209 through the diode D2.

The voltage detection comparison unit 209 cuts the first switching unit 204 by comparing the high signal through the diode D2 with the voltage generated by the battery 201 through the third comparator 209a.

When the first switching unit 204 is blocked, the voltage generated by the solar cell panel unit 200 is supplied to the storage battery 201 to be charged.

In addition, the optical sensor comparator 202 compares the voltage generated by the optical sensor unit 210 with the voltage of the solar cell panel unit 200 and a reference voltage generating a reference voltage to the optical sensor unit 210. When the voltage generated by the higher voltage is determined by the actual sunlight, the high potential is input to the voltage detection comparator 209 through the diode D3, and when the voltage is lower than the reference voltage, the low potential is input.

The fourth comparator 209b of the voltage detection comparison unit 209 detects the voltage input from the solar cell panel unit 200 and outputs a high potential through the diode D4 when the voltage of the solar cell is high. In this case, the low potential is output and input to the third comparison unit 209A.

Therefore, the third comparison unit 209a determines whether or not the first switching unit 204 operates by discriminating whether or not a solar cell voltage is generated.

When the output is high in the voltage detection comparison unit 209, the first switch unit 204 is operated and the switching driver 203 is driven.

The switching driver 203 periodically conducts and blocks the transistors Q2 and Q3 of the second switch unit 205 with a time constant set by the voltage generated by the first switching unit 204.

By periodically switching the second switching unit 205, the light emitting elements (LED1-LED4) of the light emitting means 206 mounted on the upper, lower, left and right sides of the sign 207 is input from the first switching unit 204 Flashes by voltage and scans letters or figures engraved in the sign 207 to be described later.

That is, in FIG. 5, the portion consisting of the variable resistor VR2, the resistor R4, and the light sensor unit 210 of the reference voltage generator 212 is a sunrise and sunset detector using the light sensor unit 210. The voltage of the resistor R5 of the optical sensor comparator 202 and the zener diode ZD2 forming the reference voltage according to the change of the optical sensor 210 is compared in the second comparator 202a to obtain a diode D3. Via the non-inverting terminal (+) of the third comparator 209a of the voltage detection comparison unit 209 through.

At this time, when the state detected by the optical sensor unit 210 at sunset, the output voltage of the diode D3 becomes low potential, and at sunrise, the output voltage of the diode D3 becomes high potential.

Therefore, the output of the diode D4 connected in parallel with the diode D3 is a part that is output by comparing the voltage of the solar cell with the reference voltage. In the sunrise state, the voltage divided by the resistors R9 and R10 is the resistance R7. Since the voltage divided by R8 is lower than the voltage divided by R8, the output of the diode D4 becomes low potential and is reversed at sunset to output a high potential.

Therefore, the output of the diode D3 and the output of the diode D4 have a parallel structure so that the voltage of any one of the outputs of the fourth comparator 209b of the optical sensor comparator 202 and the voltage detection comparator 209 When the high potential is reached, the high potential is supplied to the non-inverting terminal (+) of the third comparator 209a of the voltage detection comparison unit 209 to conduct the transistor Q1 of the first switching unit 204. In response to the conduction of the transistor Q1, the timer 203a of the switching driver 203 causes the oscillation operation to periodically flash the light emitting means 206 through the second switching unit 205.

Subsequently, when the low potential is input from the fourth comparator 209b of the photosensor comparator 202 and the voltage detection comparator 209 at sunset, the output of the third comparator 209a becomes a low potential, and thus the first switching unit ( The transistor Q1 of the 204 is cut off and the timer 203A of the switching driver 203 stops the oscillation operation by blocking the transistor Q1.

As such, the light emitting means 206 attached to the sign 207 periodically blinks, so that letters or figures engraved on the sign 207 are clearly displayed at sunset.

Then, in the overcharge prevention of the storage battery 201, as shown in Figure 11, the solar cell panel portion 200 is designed so that the voltage and current (V-I) curve of the solar cell comes out.

That is, since the voltage generated per cell of the solar cell is about 0.47 volts, the voltage-current curve shown in FIG. 11 can be obtained by connecting 16 solar cells in series.

The operating voltage Vmp generated from the solar cell in the voltage-current curve is 7.54V, and the voltage drop is generated at 0.6V in the reverse current prevention diode D1 in FIG. Becomes

This voltage is a suitable voltage that can be charged to the 6V battery 201, and as shown in the voltage-current curve of FIG. 11, the voltage drops rapidly at a voltage higher than 6.94V, thereby preventing overcharge.

Then, the process of irradiating the light of the light emitting means 206 to the transparent acrylic plate 207a will be described with reference to FIGS. 6 to 10, and used on the back of the transparent acrylic plate 207a as shown in FIG. 6. A letter or a picture to be engraved is engraved at a predetermined angle, that is, 90 degrees as shown in (b) of FIG. 10, and then a light emitting member 207c, that is, a light emitting tape of a desired color is attached to the engraved letter or the back of the picture, or light is emitted. Apply paint.

A separate background plate 207d is prepared by painting a luminescent paint of a desired color.

The light emitting means 206 designed on the printed circuit board 213 of FIG. 5 is attached to the left and right or top and bottom surfaces of the transparent acrylic plate 207a.

The transparent acrylic plate 207a on which the background plate 207d is placed and the printed circuit board 213 is placed thereon is fixed to the background plate 207d.

Subsequently, when the light emitting device LED1-LED4 of the light emitting unit 206 blinks through FIG. 5, the light irradiated from the light emitting device LED1-LED4 goes straight through the transparent acrylic plate 207a and at the engraved portion. The light reaches the light emitting member 207c due to the refraction of light, and the engraved text or picture is clearly displayed.

The effect is more pronounced because the light-emitting tape or paint used above has the luminance of reflection by the lights of the vehicle at night.

12 is a configuration diagram of another embodiment of the traffic sign control apparatus according to the present invention, in which a commercial AC power supply is rectified and used.

That is, when the used AC power is supplied, the rectifying unit 301 converts the previous source into a constant voltage of a predetermined level and provides it to the switching unit 302.

At this time, the optical sensor unit 300 detects sunrise and sunset, stops the operation of the switching unit 302 at sunrise, and operates the switching unit 302 at sunset to generate the voltage of the rectifier 301 to oscillation driving unit 303. ) Will be supplied.

Therefore, the oscillation driving unit 303 causes the oscillation operation periodically by the voltage input from the switching unit 302 to flash the light emitting means 304, so that the light emitting means 304 to the sign 207 by the light emitting means 304. Engraved letters or pictures will be clearly displayed by the method described above.

As described in detail above, according to the present invention by combining the voltage and the light sensor of the solar cell to prevent the malfunction of traffic signs caused by the light of the street lamp or the light of the vehicle at sunset and the light source of the light emitting device to the traffic sign at sunset By selectively irradiating in the up and down or left and right directions, letters or pictures engraved on traffic signs are clearly displayed, and by designing the solar cell panel unit in consideration of the charging characteristics of the battery and the oscillation characteristics of the solar cell, There is an effect to protect the overcharge of.

Claims (2)

Light detecting means for detecting sunrise and sunset; A storage battery charging the voltage generated by the solar cell panel means; A reference voltage generator for dividing the voltage of the storage battery and the voltage of the solar cell panel means by a reference voltage; A low voltage comparator for comparing the reference voltage generated by the reference voltage generator with a voltage discharged from the battery and outputting a resultant voltage; An optical sensor comparator for comparing the voltage generated by the solar cell panel means with the voltage detected by the photodetector means and outputting a resultant voltage; A voltage detection comparator for detecting the voltage generated by the solar cell panel means and receiving a synthesized input of the detected voltage and the output voltage of the optical sensor comparator to compare the output voltage with the output voltage of the low voltage comparator; A first switching unit switched according to the voltage output from the voltage detection comparison unit; A switching driver driving the first switching unit to periodically generate a voltage at a predetermined time constant; A second switching unit which is periodically switched according to the voltage generated by the switching driver; Light emitting means periodically blinking in accordance with switching of the second switching unit; Control device for a traffic sign, characterized in that consisting of a sign for guiding display according to the flashing of the light emitting means. The apparatus of claim 1, wherein the voltage detection comparison means is configured to operate the first switching means when the voltage of any one of the detection voltage of the solar cell panel unit and the voltage of the optical sensor comparison unit is high.