KR102090728B1 - Apparatus for offering traffic safety information using electro luminescence panel - Google Patents

Abstract

The present invention is to provide a traffic safety display device using an EL panel so that the minimum sign lighting can continue even when a lighting error of an EL panel occurs at night. To this end, the present invention provides a traffic safety display device using an EL panel, which comprises: an EL panel unit having a sign light emitting unit in which a main light emitting unit and an auxiliary light emitting unit are dividedly formed, wherein the main light emitting unit has the shape of a sign to be displayed and emits light by an applied voltage, and the auxiliary light emitting unit is disposed adjacent to the main light emitting unit in an offset form to have the sign shape corresponding to the main light emitting unit and emits light by the applied voltage; a power supply unit electrically connected to the main light emitting unit and the auxiliary light emitting unit, and supplying power to the main light emitting unit and the auxiliary light emitting unit; a switch unit which interrupts the current supplied from the power supply unit to the main light emitting unit and the auxiliary light emitting unit; a sensor unit detecting whether the main light emitting unit is turned on; and a control unit which sets a day mode and a night mode according to information applied from the outside, controls the operation of a switch unit to supply current to the main light emitting unit side when the mode is the night mode, and controls the operation of the switch unit to block the current supplied to the main light emitting unit side and supplies the current to the auxiliary light emitting unit side when a lighting error of the main light emitting unit is detected through the sensor unit.

Description

Traffic safety display device using EL panel {APPARATUS FOR OFFERING TRAFFIC SAFETY INFORMATION USING ELECTRO LUMINESCENCE PANEL}

The present invention relates to a traffic safety display device using an EL panel. Specifically, the present invention relates to a traffic safety display device using an EL panel capable of sustaining the lighting of a sign even if an error occurs in the sign lighting at night.

In general, the identification sign of the road traffic safety sign is a reflector-type sign using a luminous pigment that can be identified by reflecting off the headlight of a driving car. It is not easy to identify because the distance perceived by the driver is shortened.

In order to improve this, in Korea, luminous safety signs have better visibility and readability than existing signs, and the rules related to road traffic signs have been revised to install traffic signs with luminous functions so that they can help drivers at night.

The road sign board with the conventional light emitting function uses a fluorescent lamp and an LED method to increase visibility, and the fluorescent lamp and LED type coated sign board is a simple light emitting method on the front, so the shape of the cover is not specific and the front lamp blinks when the power is shorted. Since it is impossible to identify the night before maintenance, it has a problem that it may threaten safety.

If the sign is blinking due to factors such as a short circuit of the power line at night when a light emission function is required, there is a problem in that the visibility of the sign is sharply lowered and safety accidents are increased until the sign is repaired.

Republic of Korea Patent Registration No. 10-1030397 (Apr. 20, 2011)

An object of the present invention is to solve a conventional problem, the present invention is to provide a traffic safety display device using an EL panel so that the minimum indicator lighting can continue even if a lighting error occurs in the night EL panel.

In order to achieve the object of the present invention described above, a traffic safety display device using an EL panel according to an embodiment of the present invention has a cover shape to be displayed and emits light by an applied voltage. An EL panel unit disposed adjacent to the main light emitting unit in an offset form so as to have a corresponding cover shape, and an auxiliary light emitting unit that emits light by an applied voltage, and is formed by dividing each other; A power supply unit electrically connected to the main light emitting unit and the auxiliary light emitting unit and supplying power to the main light emitting unit and the auxiliary light emitting unit; A switch unit that interrupts the current supplied from the power supply unit to the main light emitting unit and the auxiliary light emitting unit; A sensor unit detecting whether the main light emitting unit and the auxiliary light emitting unit are turned on; And setting a daytime mode and a nighttime mode according to information applied from the outside, and in the nighttime mode, controlling the operation of the switch unit to supply current to the main light emitting part, but an error in lighting the main light emitting part through the sensor part. And controlling the operation of the switch unit to block the current supplied to the main light emitting unit and to supply the current to the auxiliary light emitting unit when detected.

In addition, in the traffic safety display device using an EL panel according to an embodiment of the present invention, the sensor unit is disposed between the switch unit and the main light emitting unit and measures the current supplied to the main light emitting unit to measure the main light emitting unit A first current sensor that detects whether to turn on; And a second current sensor disposed between the switch part and the auxiliary light emitting part and measuring the current supplied to the auxiliary light emitting part to detect whether the auxiliary light emitting part is turned on.

In addition, in a traffic safety display device using an EL panel according to an embodiment of the present invention, the cover light emitting unit is disposed in a central area of the EL panel unit, and a first cover having a first main light emitting unit and a first auxiliary light emitting unit A light emitting part; And a second cover light emitting part disposed on an edge region of the EL panel part and having a second main light emitting part and a second auxiliary light emitting part.

In addition, in the traffic safety display device using an EL panel according to an embodiment of the present invention, the power supply unit, a solar cell for converting sunlight into electrical energy; A main capacitor that stores electric energy produced by the solar cell and supplies power to the main light emitting part and the auxiliary light emitting part; An auxiliary capacitor that stores electrical energy produced by the solar cell or is supplied with a commercial voltage; And a charge / discharge control unit that detects the remaining charge of the main capacitor and supplies the power of the auxiliary capacitor to the main light emitting unit and the auxiliary light emitting unit when the remaining charge of the main capacitor falls below a minimum set power level. You can.

In addition, in the traffic safety display device using the EL panel according to an embodiment of the present invention, the switch unit, the first switch for interrupting the current supplied from the power supply unit to the main light emitting unit and the auxiliary light emitting unit in the power supply unit It may include; a second switch for interrupting the current supplied to the side, in this case, the control unit, in the daytime mode, by operating the first switch and the second switch off the main light emitting unit and the auxiliary light emitting unit The current supplied to the side is cut off, and in the night mode, the first switch is turned on and the second switch is turned off to supply current to the main light emitting unit.

According to the present invention, even if an error occurs in the lighting of the main light emitting part in the night mode, the main light emitting part and the auxiliary light emitting part are formed through the divided light emitting part, and the lighting of the cover through the auxiliary light emitting part can be continued during the maintenance time. By increasing the visibility of drivers or pedestrians, the incidence of traffic accidents can be greatly reduced.

In addition, according to the present invention, by selectively supplying power to the main light emitting portion and the auxiliary light emitting portion, the divided light emitting portion is formed, it is possible to operate the light at a relatively low power consumption can reduce power consumption, natural energy such as sunlight Power supply and management using can be facilitated.

1 is an exemplary view for explaining the configuration of a traffic safety display device according to an embodiment of the present invention.
2 is a view showing the front of the EL panel unit according to an embodiment of the present invention.
FIG. 3 is a view showing a partial cross section of the EL panel portion of FIG. 2.
4 is an exemplary view for explaining the configuration of a power supply according to an embodiment of the present invention.
5 is an exemplary view for explaining the configuration of a control unit according to an embodiment of the present invention.
6 is a view showing a lighting state of the EL panel unit according to an embodiment of the present invention.
7 is a view showing a front surface of an EL panel unit according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention in which the above-described problem to be solved can be realized in detail will be described with reference to the accompanying drawings. In describing these embodiments, the same name and the same code may be used for the same configuration, and additional descriptions may be omitted accordingly.

1 is an exemplary view for explaining the configuration of a traffic safety display device according to an embodiment of the present invention, Figure 2 is a view showing the front of the EL panel unit according to an embodiment of the present invention, Figure 3 is Figure 2 It is a figure showing a partial cross section of the EL panel portion.

The traffic safety display device using the EL panel according to the present invention may include an EL panel unit 100, a power supply unit 200, a switch unit 300, a sensor unit 400, and a control unit 500.

The EL panel unit 100 may be a sign, and may include an EL sheet 102 having a plurality of EL elements.

In the EL element, that is, the electroluminescence element, when an alternating voltage is applied to the transparent electrode and the metal electrode on the back, electrons in the fluorescent material are accelerated and excited (excited) at a high energy level. It can emit light while colliding with an atom in a material and falling from an excited state to a low energy level, emitting light.

The EL sheet 102 may include a cover light-emitting portion 110 and a non-light-emitting portion 130. The cover light-emitting portion 110 corresponds to a portion emitting light as the EL elements are arranged, and the non-light-emitting portion 130 is As the EL element is excluded, it corresponds to a portion that does not emit light.

The cover light emitting part 110 has a predetermined cover shape to be displayed, and the cover shape may be one of numbers, symbols, and figures. Referring to FIG. 7, the shape of the cover may be made of a combination of numbers, symbols, and figures.

The cover light emitting part 110 includes a main light emitting part 111 and an auxiliary light emitting part 112. The main light emitting part 111 and the auxiliary light emitting part 112 are formed to be divided from each other, each of which is intended to be displayed. They are arranged adjacent to each other in an offset form to have a cover shape.

Accordingly, a display shape to be displayed only by the main light emitting unit 111 may be displayed, and a display shape to be displayed by only the auxiliary light emitting unit 112 may be displayed.

Hereinafter, the main light emitting part 111 and the auxiliary light emitting part 112 constituting the cover light emitting part 110 will be described in more detail.

The main light emitting unit 111 can emit light by a voltage applied from the outside as the EL elements are arranged.

The main light emitting unit 111 may be, for example, a phosphor, a dielectric, and a protective layer sequentially disposed between a front electrode and a back electrode, such as a transparent conductive film (ITO film), and a predetermined circuit designed on the back side. By forming a printed circuit layer by printing, an external voltage can be stably applied to the main light emitting part 111 without a separate terminal.

In addition, when it is difficult to effectively form a printed circuit layer on the rear side according to the cover shape of the main light emitting portion 111, the main light emitting portion 111 may be cut to fit the shape of the cover to be displayed.

The main light emitting part 111 may implement various colors, and may be manufactured in various forms according to the shape of a cover to be displayed.

The auxiliary light emitting unit 112 may also emit light by a voltage applied from the outside as the EL elements are arranged. The main light emitting unit 111 described above may be basically manufactured in the same manner, and a redundant description thereof will be omitted.

Meanwhile, the main light emitting part 111 may be manufactured to occupy most of the area of the display light emitting part, and the auxiliary light emitting part 112 may be made of a relatively small area to occupy the other remaining area of the display light emitting part.

For example, the main light emitting unit 111 may be manufactured to have an area that satisfies the road traffic sign regulations, and the auxiliary light emitting unit 112 may be manufactured to have a minimum area capable of identifying the shape of the sign. .

Referring to FIG. 3, the EL panel unit 100 may further include a front transparent plate 101 and a rear support plate 103.

The front transparent plate 101 is disposed on the front of the EL sheet 102, and can be made of a high-brightness and high-intensity UV transparent film. Therefore, the front transparent plate 101 can protect the EL sheet 102 from the outside and increase the visibility of the cover shape of the EL sheet 102.

The back support plate 103 may be coupled to the back of the EL sheet 102, and protects the EL sheet 102, and at the same time connects the EL panel unit 100 to a holding frame (not shown) so that the EL panel unit 100 The installation position can be maintained stably.

Subsequently, the power supply unit 200 is electrically connected to the cover light emitting unit 110 and can supply power for light emission of the cover light emitting unit 110.

The power supply unit 200 may be independently connected to the main light emitting unit 111 and the auxiliary light emitting unit 112, and may independently supply power to the main light emitting unit 111 and the auxiliary light emitting unit 112.

4 is an exemplary view for explaining the configuration of a power supply according to an embodiment of the present invention.

Referring to FIG. 4, the power supply unit 200 may include a solar cell 210, a main capacitor 230, an auxiliary capacitor 240, a charge / discharge control unit 250, and a current conversion unit 260.

The solar cell 210 converts sunlight into electrical energy to produce electrical energy, and the solar cell 210 may be disposed on a holding frame on which the EL panel unit 100 is installed.

The electric energy produced by the solar cell 210 is charged and stored in the main capacitor 230, and the main capacitor 230 may be electrically connected to the cover light emitting unit 110 of the EL panel unit 100. Therefore, the electrical energy stored in the main capacitor 230 can be transmitted to the cover light emitting unit 110 side.

In the present invention, the light emitting of the cover light emitting part 110 may be possible even at low power, such as the solar cell 210 due to the cover light emitting part 110 including the EL element.

The main capacitor 230 may also be charged by the commercial voltage 220 in case the illumination value such as rain is not sufficiently secured.

The electric energy produced by the solar cell 210 may be charged and stored in the auxiliary capacitor 240, and the auxiliary capacitor 240 may be electrically connected to the cover light emitting unit 110 of the EL panel unit 100. Therefore, the electric energy stored in the auxiliary capacitor 240 can also be transferred to the cover light emitting unit 110 side.

At this time, the auxiliary capacitor 240 may supply the stored power charged to the cover light emitting unit 110 only when the remaining charge of the main capacitor 230 falls below the minimum set power level.

That is, when the remaining charge of the main capacitor 230 falls below the minimum set power level, charging of the main capacitor 230 is performed by the operation signal of the charge / discharge control unit 250 to be described later, and thus the main capacitor 230 When charging is being performed, power stored in the auxiliary capacitor 240 may be supplied to the cover light emitting unit 110 side.

To this end, a switch (not shown) may be further provided to electrically connect the main capacitor 230 and the cover light emitting unit 110 or electrically connect the auxiliary capacitor 240 and the cover light emitting unit 110.

The auxiliary capacitor 240 may also be charged by the commercial voltage 220 in case the illumination value such as rain is not sufficiently secured.

Whether to use the solar cell 210 or the commercial voltage 220 to charge the main capacitor 230 and the auxiliary capacitor 240 may be selected in consideration of the environment and weather changes in which the traffic safety display device is installed.

The charge / discharge control unit 250 may include a first sensor that detects the remaining charge of the main capacitor 230 and a second sensor that detects the remaining charge of the auxiliary capacitor 240. That is, the charging and discharging timing of the main capacitor 230 may be determined according to the remaining charge of the main capacitor 230 detected through the first sensor, and according to the remaining charge of the auxiliary capacitor 240 detected through the second sensor The charging and discharging timing of the auxiliary capacitor 240 may be determined.

The charge / discharge control unit 250, for example, when the remaining charge of the main capacitor 230 falls below a minimum set power level, operates a switch to establish an electrical connection between the main capacitor 230 and the cover light emitting unit 110. By blocking and electrically connecting the auxiliary capacitor 240 and the cover light emitting unit 110, power stored in the auxiliary capacitor 240 can be supplied to the cover light emitting unit 110 side. In addition, charging of the main capacitor 230 may be performed during power supply through the auxiliary capacitor 240.

When the charging of the main capacitor 230 is fully charged, the charging / discharging control unit 250 operates the switching switch oppositely to cut off the electrical connection between the auxiliary capacitor 240 and the cover light emitting unit 110, and the main capacitor 230 and the cover The light emitting unit 110 is electrically connected to continuously supply the power of the buffered main capacitor 230 to the cover light emitting unit 110 side. In addition, the auxiliary capacitor 240 that is not in use may be kept in a fully charged state through the solar cell 210 or the commercial voltage 220.

The current converter 260 may be an inverter that converts DC power supplied from the main capacitor 230 and the auxiliary capacitor 240 into AC power.

1, the switch unit 300 is to interrupt the current supplied from the power supply unit 200 to the cover light emitting unit 110, and may include a first switch 310 and a second switch 320. You can.

The first switch 310 is disposed between the current conversion unit 260 and the main light emitting unit 111 to regulate the current supplied to the main light emitting unit 111 side.

The second switch 320 is disposed between the current conversion unit 260 and the auxiliary light emitting unit 112 to interrupt the current supplied to the auxiliary light emitting unit 112.

The first switch 310 and the second switch 320 may be turned on and off according to an operation signal transmitted from the control unit 500 to be described later.

The sensor unit 400 may detect whether the cover light emitting unit 110 is turned on, and the sensor unit 400 according to the embodiment may include a first current sensor 410 and a second current sensor 420. have.

The first current sensor 410 may be disposed between the first switch 310 and the main light emitting part 111, measure the current value supplied to the main light emitting part 111 side, and based on the measured current value. It is possible to detect whether the main light emitting unit 111 is in a turned on or off state. The first current sensor 410 may detect a short circuit or a short circuit of a wire connecting the power supply unit 200 and the main light emitting unit 111.

The second current sensor 420 may be disposed between the second switch 320 and the auxiliary light emitting unit 112, measure a current value supplied to the auxiliary light emitting unit 112 side, and based on the measured current value. It is possible to detect whether the auxiliary light emitting unit 112 is in a turned on or off state. The second current sensor 420 may detect whether a short circuit or a short circuit of a wiring connecting the power supply unit 200 and the auxiliary light emitting unit 112 is made.

Various current sensor methods such as a CT method and a Hall element method may be applied to the first current sensor 410 and the second current sensor 420.

Meanwhile, the traffic safety display device according to the present invention may further include day and night mode measurement means 600, and day and night mode measurement means 600 may be formed of a timer 610 or an illumination sensor 620.

Time information measured by the timer 610 and ambient brightness information measured by the illuminance sensor 620 are transmitted to the controller 500 described later.

5 is an exemplary view for explaining the configuration of a control unit according to an embodiment of the present invention.

Referring to FIG. 5, the control unit 500 may set a day mode and a night mode, which are the criteria for turning off and lighting the cover light emitting unit 110 according to information applied from the outside.

To this end, the control unit 500 may include a mode determining unit 510 and a mode operation unit 520.

The mode discrimination means 510 may set the day mode and the night mode based on the set reference time, and may also set the day mode and the night mode according to the light intensity of the surrounding environment sensed by the light sensor 520.

In addition, it is possible to set a time zone in which visibility of the road is not sufficiently secured, such as rainy weather, as a night mode. As a result, the mode discrimination means 510 may set the day mode and the night mode to be appropriately adjusted according to the surrounding situation by combining time information and illuminance value information according to weather, season, installation location, and the like.

In addition, the control unit 500 may include a communication unit 540 connected to the external Internet, and may set day and night modes based on real-time weather information received through the Internet. For example, even if the daytime mode has been previously set through the timer 610 and the illuminance sensor 620, when the flowed weather continues, such as rain, it can maintain the set state changed to the nighttime mode in conjunction with weather information.

When the day mode and the night mode are set as described above, the mode operation unit 520 may control the operation of the switch unit 300 by transmitting an operation signal to the switch unit 300 based on this.

Fig. 6 (a) is an exemplary view showing the state of the label of the EL panel in day mode.

As shown in FIG. 6 (a), in the daytime mode, the mode operation unit 520 turns off the first switch 310 and the second switch 320 to operate the main light emitting unit 111 and the auxiliary light emitting unit 112. The current supplied to the side can be cut off. At this time, the surrounding environment can maintain a sufficient illuminance value, and the visibility of the cover shape of the EL panel unit 100 can be sufficiently secured.

6 (b) is an example showing the lighting state of the EL panel unit in the night mode.

As shown in FIG. 6 (b), in the night mode, the mode operation unit 520 operates the first switch 310 on to supply current to the main light emission unit 111 side. At this time, the second switch 320 is maintained off operation, the current supplied to the auxiliary light emitting unit 112 side may maintain a blocked state. At this time, even if the ambient light value is low, visibility of the cover shape of the EL panel unit 100 can be sufficiently secured due to light emission from the main light emitting unit 111. In addition, because the auxiliary light emitting portion 112 is blocked from the current supply, since the main light emitting portion 111 which is a part of the cover light emitting portion 110 can emit light in the form of a cover, relatively low power can be used.

Meanwhile, according to the present invention, if an error occurs in the lighting of the main light emitting part 111 in the night mode, the shape of the cover may be continuously lighted through the auxiliary light emitting part 112. That is, when the lighting error of the main light emitting unit 111 is detected through the first current sensor 410 while supplying current to the main light emitting unit 111 in the night mode, the control unit 500 first switch 310 The current supplied to the main light emitting part 111 is blocked by controlling the operation of the controller, and the current of the second switch 320 is controlled to supply the current to the auxiliary light emitting part 112.

To this end, the control unit 500 may further include an inspection signal processing unit 530.

In the night signal mode, when the constant current amount supplied from the power supply unit 200 to the main light emitting unit 111 is measured through the first current sensor 410 in the night mode, the main light emitting unit 111 lights normally. It can be judged as maintaining the state. When the main light emitting unit 111 maintains normal lighting, the mode operation unit 520 maintains the first switch 310 on and the second switch 320 maintains the off state.

In addition, when the amount of current supplied from the power supply unit 200 to the main light emitting unit 111 through the first current sensor 410 during the night mode is not measured, it may be a case where the power line is shorted or shorted, and the main light emitting unit At (111), it can be determined that normal light emission is not achieved. When a lighting error occurs in the main light emitting unit 111, the mode operation unit 520 turns off the first switch 310 and turns on the second switch 320.

Therefore, when a lighting error occurs in the main light emitting part 111, the current supplied to the main light emitting part 111 is cut off, and the current is supplied to the auxiliary light emitting part 112, thereby switching as shown in FIG. 6 (c). , Through the auxiliary light emitting unit 112, it is possible to continuously maintain the emission state of the cover shape.

Meanwhile, in the above-described embodiment, the case in which the power of the main capacitor 230 is selectively supplied to the main light-emitting unit 111 and the auxiliary light-emitting unit 112 is described, but unlike this, the main capacitor 230 is the main The light emitting unit 111 may be wired to supply power, and the auxiliary capacitor 240 may be wired to supply power to the auxiliary light emitting unit 112.

Accordingly, if a lighting error in which the amount of current supplied from the main capacitor 230 to the main light emitting unit 111 is not measured through the first current sensor 410 during the night mode occurs, the mode operation unit 520 may 1 Turn off the switch 310 to block the current supplied from the main capacitor 230 to the main light emitting part 111, and turn on the second switch 320 to turn on the power of the auxiliary capacitor 240 to the auxiliary light emitting part 112 ) Side.

Therefore, when a lighting error occurs in the main light emitting unit 111, the use of power in the main capacitor 230 is cut off, and the auxiliary light emitting unit 112 can be continuously emitted by using the power of the auxiliary capacitor 240.

As such, by supplying the power of the main capacitor 230 and the auxiliary capacitor 240 to the main light emitting unit 111 and the auxiliary light emitting unit 112 independently, the light emitting area of the auxiliary light emitting unit 112 having a narrow light emission area is relatively lit. The light-emitting operation can be performed even at low power, thereby further reducing power consumption.

For example, since the main capacitor 230 requires relatively large power consumption, the commercial voltage 220 can be used, and the auxiliary capacitor 240 requires relatively low power consumption, and thus the solar cell 210 and It can be configured to be charged from the same natural energy.

The traffic safety display device according to the present invention may include a central processing unit 700 that manages a plurality of traffic safety display devices installed in a specific area.

That is, the lighting state information of the EL panel unit 100 generated by the inspection signal processing unit 530 can be transmitted and received by the central processing unit 700 through the communication unit 540, and the central processing unit 700 displays, lamps, and buzzers. The lighting state of each EL panel unit 100 installed over a wide area can be checked in real time through a notification means such as the maintenance of the EL panel unit 100 through this.

For example, the inspection signal processing unit 530 primarily detects the partial inspection signal through the communication unit 540 through the communication unit 540 when the lighting error of the main light emitting unit 111 is detected through the first current sensor 410 in the night mode. ) Side. Therefore, the central processing unit 700 that has received the partial inspection signal can quickly cope with maintenance to be continued, such as calling a field representative of the corresponding EL panel unit 100.

In the display device according to the present invention, since the lighting of the auxiliary light emitting part 112 continues even in a lighting error state of the main light emitting part 111, the cover shape is high until the main light emitting part 111 is maintained. Visibility can continue to be maintained.

If the main light emitting part 111 is turned off in the night mode and the auxiliary light emitting part 112 is turned on, when the lighting error is detected to the auxiliary light emitting part 112 through the second current sensor 420, the EL panel is detected. The visibility of the unit 100 may be drastically lowered. In this case, the inspection signal processing unit may secondly transmit the emergency inspection signal to the central processing unit 700 through the communication unit 540. Therefore, the central processing unit 700 receiving the emergency check signal can contribute to completing the repair of the corresponding EL panel unit 100 as quickly as possible, such as promptly calling a field representative of the corresponding EL panel unit 100.

7 is a view showing a front surface of an EL panel unit according to another embodiment of the present invention.

As shown in FIG. 7, the EL panel unit 1200 according to another embodiment of the present invention may provide various cover shapes according to the installation environment.

As illustrated, the EL panel unit 1200 includes a first cover light emitting unit 1210 disposed in a central region of the EL panel unit 1200 and a second cover light emitting unit disposed in an edge region of the EL panel unit 1200 ( 1220).

The first cover light emitting unit 1210 includes a first main light emitting unit 1211 and a first auxiliary light emitting unit 1212, and the second cover light emitting unit 1220 includes a second main light emitting unit 1221 and a second It includes an auxiliary light emitting portion 1222. Each of the first cover light emitting part 1210 and the second cover light emitting part 1220 is configured in the same manner as the above-described cover light emitting part 110, and a duplicate description thereof will be omitted.

The EL panel unit 1200 having various safety signs as described above can stably provide high visibility in various road environments in which the display device is installed.

Although preferred embodiments of the present invention have been described with reference to the drawings as described above, those skilled in the art may vary the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It can be modified or changed.

100: EL panel unit 110: cover light emitting unit
111: main light emitting unit 112: auxiliary light emitting unit
200: power supply 300: switch
310: first switch 320: second switch
400: sensor unit 410: first current sensor
420: second current sensor 500: control unit

Claims (5)

It includes an EL sheet including a cover light emitting portion and a non-light emitting portion, a front transparent plate installed on the front side of the EL sheet, and a back support plate coupled to the back side of the EL sheet, and the cover light emitting portion has a cover shape to be displayed. The main light emitting part emitting light by the applied voltage and the main light emitting part are disposed adjacent to each other in an offset form so as to have a cover shape corresponding to the main light emitting part. EL panel unit;
A power supply unit electrically connected to the main light emitting unit and the auxiliary light emitting unit and supplying power to the main light emitting unit and the auxiliary light emitting unit;
A switch unit that interrupts the current supplied from the power supply unit to the main light emitting unit and the auxiliary light emitting unit;
A sensor unit detecting whether the main light emitting unit and the auxiliary light emitting unit are turned on;
It includes a communication unit connected to the outside, a mode determining unit capable of setting a day mode and a night mode according to information applied from the outside, and a mode operation unit for controlling the operation of the switch unit based on the day mode and the night mode Control unit; And,
The EL panel unit is turned on by receiving a partial inspection signal according to the lighting error of the main light emitting unit from the communication unit and an emergency inspection signal according to the lighting error of the auxiliary light emitting unit in the partial inspection state in which the main light emitting unit is turned off and the auxiliary light emitting unit is turned on. It includes a central processing unit that displays the status in real time,
In the daytime mode, the mode operation unit cuts off the current supplied to the main light emitting unit and the auxiliary light emitting unit,
In the night mode, the mode operation unit controls the operation of the switch unit to supply current to the main light emission unit while blocking the current supplied to the auxiliary light emission unit, but when the lighting error of the main light emission unit is detected through the sensor unit, Control the operation of the switch unit to cut off the current supplied to the main light emitting unit and supply the current to the auxiliary light emitting unit,
The main light-emitting part and the auxiliary light-emitting part each include a phosphor, a dielectric, and a protective layer sequentially disposed between the front electrode and the back electrode, wherein the main light-emitting part and the auxiliary light-emitting part are cut and manufactured according to the shape of each cover. Traffic safety display device using an EL panel, characterized in that. According to claim 1,
The sensor unit,
A first current sensor disposed between the switch part and the main light emitting part and measuring the current supplied to the main light emitting part to detect whether the main light emitting part is turned on or not; And
And a second current sensor disposed between the switch part and the auxiliary light emitting part and measuring the current supplied to the auxiliary light emitting part to detect whether the auxiliary light emitting part is on or off. Display device. delete According to claim 1,
The power supply unit,
A solar cell that converts sunlight into electrical energy;
A main capacitor that stores electric energy produced by the solar cell and supplies power to the main light emitting part and the auxiliary light emitting part;
An auxiliary capacitor that stores electrical energy produced by the solar cell or is supplied with a commercial voltage; And
Includes a charge and discharge control unit for detecting the remaining charge of the main capacitor and supplying power to the auxiliary capacitor to the main light emitting unit and the auxiliary light emitting unit when the remaining charge of the main capacitor falls below a minimum set power level. Traffic safety display device using an EL panel, characterized in that. According to claim 1,
The switch unit,
It includes; a first switch for interrupting the current supplied from the power supply to the main light emitting unit and a second switch for interrupting the current supplied from the power supply to the auxiliary light emitting unit;
The control unit,
In the daytime mode, the first switch and the second switch are turned off to cut off the current supplied to the main light emitting part and the auxiliary light emitting part,
In the night mode, the first switch is turned on and the second switch is turned off so that current is supplied to the main light emitting part. A traffic safety display device using an EL panel.

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