KR20160024474A - Power saving type LED sign apparatus - Google Patents

Abstract

The present invention relates to a power saving type LED display device. The power saving type LED display device includes: a case; a display panel providing different guidance display information on a front surface and a rear surface, wherein the display panel can rotate in order for the locations of the rear surface and the front surface to be switched with each other; a rotation unit rotating the display panel; a first guidance display unit installed on the front surface of the display panel and providing the guidance display information by attaching a reflection sheet onto the front surface of the display panel or coating the front surface of the display panel with a paint; a first LED panel including multiple LEDs arranged to correspond to the first guidance display unit on the inner side of the first guidance display unit; and a second guidance display unit installed on the rear surface of the display panel and providing the guidance display information different from the first guidance display unit. Therefore, the power saving type LED display device can increase the life of the LED and reduce power consumption. The power saving type LED display device also can provide the various guidance display information.

Description

[0001] The present invention relates to a power saving type LED sign apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power saving LED indicator, and more particularly, to a power saving LED indicator capable of reducing power consumption, increasing the lifetime of an LED, and providing various guide indication information.

Generally, a road sign is provided on the road to inform a driver of the vehicle of information such as the speed limit of the vehicle, variable road, and the like. Also, in a space used by a plurality of pedestrians, such as inside a playground or a subway, signs for guiding the information such as the position and direction of the entrance are provided to the pedestrian.

1A is a perspective view showing a conventional road sign. 1A, a conventional road sign is fixed to a horizontal column 2 and a horizontal column 2 extending horizontally from a vertical column 1, a vertical column 1 vertically installed on the ground, And a sign 3 for displaying the road information to the driver by printing or attaching letters or patterns on the road 3.

Such conventional road signs generally use a sheet coated with a special paint having a high reflectance to enhance the visibility of the information displayed on the signs at night, or paint a special paint on the signs. In addition, since the light projected onto the signboard is not constant depending on the time and weather conditions, the conventional road signboard has a separate illumination light 4 for illuminating the signboard.

However, the conventional road sign shown in FIG. 1A needs to be coated with expensive special paint coatings or painted with expensive special paints, a separate illumination lamp should be used, weather deterioration such as rain or snow There is a problem that visibility is low on foggy days. In addition, the conventional road sign shown in Fig. 1A can display only one piece of information printed or attached to the signboard, which is not useful.

1B is a perspective view showing a conventional variable lane marking plate. Referring to FIG. 1B, a conventional variable lane marking plate includes a vertical column 1 'vertically installed on the ground, a horizontal column 2' extending horizontally from the vertical column 1 ', and a horizontal column 2' And a display panel 12 for displaying information on whether or not the vehicle is a variable vehicle.

1B includes a controller 9 for controlling the display panel 12 and a surveillance camera 10 for monitoring the variable lane. Here, the display panel 12 is constituted by an LED panel, and the LED 9 is operated by the controller 9 to selectively display the availability of variable cars (for example, 'x', '↓').

However, the conventional variable lane mark shown in FIG. 1B has a problem that power consumption is large because the LED panel must be kept on regardless of daytime and nighttime to display variable lane information. In addition, since only one or two pieces of information are mainly displayed intensively, a load is concentrated by a specific LED, which shortens the lifetime of a specific LED, and the entire substrate must be replaced. In addition, since the LED display panel 12 displays only a specific display, that is, whether or not it can be used as a variable lane ('x', '↓'), its usefulness deteriorates.

Korean Patent Laid-Open Publication No. 2014-0011272 discloses a " bidirectional LED single panel display board " in which LED chips are provided on the front and back sides of the PCB to display information in both directions. Such a bi-directional LED single-panel electric signboard mainly solves the problem of the above-described road sign (see FIG. 1A) in which only one piece of information is displayed and its usefulness is poor.

However, since the 'bidirectional LED single panel display board' disclosed in the above prior art must always operate the LEDs without distinction between night and day for information display, power consumption is high as in the case of the above-described variable lane sign (see FIG. 1B) Since only the information of the branch is concentratedly displayed, the load is concentrated by the specific LED, which shortens the lifetime of the specific LED, and the entire substrate must be replaced. Moreover, since the LEDs are driven in both directions, there is a problem that the power consumption as well as the operating cost are increased.

Korean Patent Laid-Open Publication No. 2011-0040426 discloses a 'display device' that rotates a polygonal display unit having a light emitting module surface by rotating means to provide various images and images.

However, since the 'display device' disclosed in the above prior art document is displayed on a display unit having no light emitting module surface through a painting or a sheet using a conventional special paint, the problem of the above-mentioned prior art is not fundamentally improved I can not. The 'display device' disclosed in the above prior art can provide three guide displays by configuring the polygonal display unit as a rotatable triangular panel. However, in order to construct the guide display surface, the polygonal display unit is provided only in the form of a triangular prism It is difficult to diversify the guide signs. In addition, the 'display device' disclosed in the above prior art also has a problem that the load is concentrated on a specific LED that is displayed intensively for information display, thereby shortening the lifetime of a specific LED and replacing the entire substrate.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a guide display unit which is coated with a paint or is made of a reflective sheet during a day with good visibility, It is an object of the present invention to provide a power saving type LED labeling apparatus which can reduce power consumption and increase lifetime of LED by increasing visibility.

It is another object of the present invention to provide a power saving type LED labeling device in which a display panel is constituted by two surfaces that are switched by rotation, thereby enabling various guide displays.

In addition, the present invention is characterized in that the display panel is composed of both sides where the position is changed by rotation, and one side of the display panel is coated with a paint or a reflective sheet, and an LED panel is provided on the other side And to provide a power saving type LED display device capable of reducing power consumption and increasing the life span of the LED while enabling various guide displays.

In order to achieve the above object, a power saving type LED indicator according to a first embodiment of the present invention includes a case; A display panel installed in the case and providing guide display information on one surface; A guide display unit provided on one side of the display panel and attaching a reflection sheet to the display panel or applying paint to the display panel to provide the guide display information; And an LED panel having a plurality of LEDs disposed in a shape corresponding to the guide display unit on the inside of the guide display unit.

In addition, the energy saving LED labeling apparatus according to the second embodiment of the present invention includes a case; A display panel mounted on the case and provided with different guide display information on the front and rear surfaces, respectively, and rotatable to change positions of the front and rear surfaces; Rotating means for rotating the display panel; A first guide display unit provided on a front surface of the display panel and attaching a reflection sheet to the front surface of the display panel or applying paint to the front surface of the display panel to provide guide display information; A first LED panel having a plurality of LEDs arranged in a manner corresponding to the first guide display unit inside the first guide display unit; And a second guide display unit provided on a rear surface of the display panel and providing guide display information different from the first guide display unit.

Preferably, the second guide display unit provides guidance display information by attaching a reflection sheet to the back surface of the display panel or applying paint to the back surface of the display panel, and inside the second guide display unit, And a second LED panel having a plurality of LEDs arranged therein.

The second guide display unit may include a second LED panel having a plurality of LEDs to provide various guide display information.

Preferably, the display panel comprises a plurality of divided panels, and the rotating means includes a rotary gear provided on a rotary shaft of each of the divided panels, a rack gear meshed with all of the rotary gears, A pinion gear which moves the rack gear in the longitudinal direction to engage with the rack gear, and a drive motor which rotates the pinion gear.

The power saving LED indicator system according to the present invention comprises: a display panel rotatable to change the positions of the front and rear surfaces, the front panel and the rear panel providing different guide display information; Rotating means for rotating the display panel; A first guide display unit provided on a front surface of the display panel and attaching a reflection sheet to the front surface of the display panel or applying paint to the front surface of the display panel to provide guide display information; A first LED panel having a plurality of LEDs arranged in a manner corresponding to the first guide display unit inside the first guide display unit; A second guide display unit provided on a rear surface of the display panel and providing guide display information different from the first guide display unit; And a control unit for controlling operation of the rotating unit and lighting of the first LED panel.

Preferably, the second guide display unit provides guidance display information by attaching a reflection sheet to the back surface of the display panel or applying paint to the back surface of the display panel, and inside the second guide display unit, And a second LED panel having a plurality of LEDs arranged therein.

The second guide display unit may include a second LED panel having a plurality of LEDs to provide various guide display information.

Preferably, the apparatus further includes an illuminance sensor for sensing the illuminance of the surroundings, and the controller controls the operation of the rotation means and the LED lighting of the display panel based on the measured value of the illuminance sensor.

Here, the first LED panel and the second LED panel are controlled to be turned on / off by one switching element, and the control unit controls the ON / OFF states of the first LED panel and the second LED panel And the switching elements are controlled so as to be simultaneously or independently operated.

Preferably, the controller turns off the first LED panel and the second LED panel while the display panel is rotating, and when the rotation of the display panel is stopped, the first LED panel and the second LED panel And only the front LED panel is turned on.

Preferably, the first LED panel and the second LED panel each include a group of monochrome LEDs of different colors, the monochrome LEDs of different colors are coupled to separate switching elements, and the LEDs of the same color are the same And is coupled to the switching element.

According to the present invention, when the visibility is good during the day, the guide display unit made of a reflective sheet is applied, or the nighttime or bad weather where the visibility is poor, the LED is lit on the guide display unit to increase the visibility, The lifetime of the battery can be increased.

Further, according to the present invention, the display panel is constituted by two surfaces whose positions are switched by rotation, and various guide displays are possible.

Further, according to the present invention, there is provided a display panel comprising two surfaces on which positions are switched by rotation, a guide display portion coated with a paint or a reflective sheet on one of the two surfaces, and an LED panel So that various guide displays can be performed, power consumption can be reduced, and the lifetime of the LED can be increased.

1A is a perspective view showing a conventional road sign,
1B is a perspective view showing a conventional variable lane marking plate,
FIG. 2 is a configuration diagram illustrating a power-saving LED indicator according to a first embodiment of the present invention.
3 is a configuration diagram illustrating a power-saving LED indicator according to a second embodiment of the present invention.
4 is a view illustrating a first advertisement display unit of a power saving type LED display apparatus according to a second embodiment of the present invention.
5 is a view illustrating a second advertisement display unit of the power saving type LED display apparatus according to the second embodiment of the present invention.
6 is a view showing a part of a first LED panel of a power saving type LED labeling apparatus according to a second embodiment of the present invention,
7 is a view showing a part of the second LED panel of the power saving type LED labeling device according to the second embodiment of the present invention,
8 is a circuit diagram showing a configuration of an LED panel of a power saving type LED indicator according to a second embodiment of the present invention,
9 is a view showing a driving circuit of an LED panel of a power saving type LED display device according to a second embodiment of the present invention,
10 is a view showing another example of a driving circuit of an LED panel of a power saving type LED labeling apparatus according to a second embodiment of the present invention,
11 is a view schematically showing a configuration of a power saving type LED indicator system according to a second embodiment of the present invention,
12A and 12B are diagrams illustrating an example of use of the power saving type LED labeling apparatus according to the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a power saving LED labeling apparatus according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the technical scope of the present invention. Will be.

Referring to FIG. 2, the power saving type LED display apparatus according to the first embodiment of the present invention includes a case 10, a display panel 20, a guide display unit 30, and an LED panel 40.

The case 10 is a rectangular structure having an installation space as shown in a general road sign or the like, and is installed on the upper part of the road through vertical pillar (not shown) and horizontal pillar (not shown).

The display panel 20 is installed on the case 10 so that one surface thereof is exposed to the outside, and provides guidance display information on the one surface.

The guide display unit 30 is provided on one surface of the display panel 20 in the form of a specific character or pattern to provide guidance information to the driver or the pedestrian. The guide display section 30 may be formed of a reflective sheet of a specific type corresponding to the guidance display information and attached to one surface of the display panel 20. [ Alternatively, the guide display unit 30 can be formed by applying a paint to one surface of the display panel 20 in a specific form corresponding to the guide display information.

The LED panel 40 is provided inside the guide display unit 30 and radiates light to the outside of the guide display unit 30 to improve the visibility of the guide display unit 30. [ The LED panel 40 includes a plurality of LEDs corresponding to the guide display unit 30. Here, the LED panel 40 is illuminated in a situation where the visibility is low, such as at night, when it is raining, or when the weather is bad, such as fogging, thereby improving the visibility of the guide display unit 30. [

With such a configuration, the power saving type LED indicator according to the present invention can provide guidance display information only by the guide display section 30 without operating the LED panel 40 during a day with good visibility, The visibility of the driver or the pedestrian can be improved by activating the LED panel 40 and irradiating light from the guide display unit 30. [

Therefore, the power-saving LED indicator according to the first embodiment of the present invention can drive the LED only in a low visibility state, thereby reducing power consumption and lifetime of the LED.

Preferably, the power saving LED labeling apparatus according to the present invention may be configured as a double-sided type in which guide display information can be displayed on the front and back sides of the display panel, respectively. 3 to 7, a power saving type LED indicator according to a second embodiment of the present invention includes a case 110, a display panel 120, a rotating means, a first guide display unit 130, a first LED panel 140 And a second guide display unit 150.

As described above, the case 110 is a rectangular structure having an installation space as shown in a general road sign or the like, and is installed on the upper part of the road through a vertical column (not shown) and a horizontal column (not shown).

The display panel 120 is installed in the case 110 such that the front and back surfaces are exposed to the outside, and provides different guidance information to the front and rear surfaces, respectively. Further, the display panel 120 is configured to be rotatable such that either the front surface or the rear surface is switched to the user, that is, toward the driver or the pedestrian.

The rotating means rotates the display panel 120 so that the positions of the front and rear surfaces of the display panel 120 are switched. Here, the display panel 120 is preferably composed of a plurality of divided panels 121, 122, 123, and 124. Then, the rotating means is configured to rotate the plurality of divided panels 121, 122, 123, and 124 at the same time.

Specifically, the rotating means includes a rotating gear 161, a rack gear 162, a pinion gear 163, and a driving motor 164. The rotary gear 161 is provided on the rotary shaft 125 of each of the divided panels 121 to 124. Here, the rotary gears 161 may be provided at the upper and lower ends of the rotary shaft 125 of the divided panels 121 to 124, respectively. The rack gear 162 is installed laterally on the upper and lower portions of the case 110 and engages with the rotary gears 161 of the divided panels 121 to 124. Here, the upper rack gear 162 is engaged with all of the rotary gears 161 positioned above, and the lower rack gear 162 is engaged with both of the lower rotary gears 161. [ The pinion gear 163 is provided at a corner portion of the case 110 and meshes with the rack gear 162 to move the rack gear 162 in the longitudinal direction, i.e., in the horizontal direction. The drive motor 164 is installed inside the case 110 and is connected to the pinion gear 163 to rotate the pinion gear 163.

When the driving motor 164 is driven, the rack gear 162 linearly moves in the longitudinal direction by the rotation of the pinion gear 163, and the linear motions of the rack gear 162 cause the rotary gears 161 to rotate And the rotation of the rotary gears 161 causes the divided panels 121 to 124 to rotate, respectively. Therefore, the positions of the front surface and the back surface of the display panel 120 can be switched.

The first guide display unit 130 is provided on the front surface 120a of the display panel 120. [ The first guide display unit 130 is provided on the front surface 120a of the display panel 120 in the form of a specific character or a pattern like the guide display unit 30 of the first embodiment described above so as to provide the driver or the pedestrian with guidance display information to provide. The first guide display unit 130 can be attached to the front surface 120a of the display panel 120 by being formed of a reflective sheet of a specific type corresponding to the guide display information. Alternatively, the first guide display unit 130 may be formed by applying paint to the front surface 120a of the display panel 120 in a specific form corresponding to the guide display information.

The first LED panel 140 is installed inside the first guide display part 130 and radiates light toward the first guide display part 130 to improve the visibility of the first guide display part 130. The first LED panel 140 includes a plurality of LEDs 140a, 140b, and 140c arranged in a manner corresponding to the first guide display unit 130. [ Here, the first LED panel 140 is illuminated in a situation where the visibility is low, such as nighttime, rain, or misty weather, thereby improving the visibility of the first guide display unit 130.

The second guide display unit 150 is provided on the back surface 120b of the display panel 120. [ The second guide display unit 150 provides guidance display information different from that of the first guide display unit 130. For example, as shown in FIG. 4, the first guide display unit 130 provides the guidance display information to "↓" indicating the passable state of the variable lane road, and the second guide display unit 150 provides guidance display information The guidance display information can be provided as 'x' indicating the passable state of the variable lane.

Here, the second guide display unit 150 may provide a guide sheet display information by attaching a reflection sheet to the back surface 120b of the display panel 120, or by applying a paint, in the same manner as the first guide display unit 130 described above. A second LED panel 170 having a plurality of LEDs 170a, 170b, and 170c disposed in a shape corresponding to the second guide display unit 150 may be installed inside the second guide display unit 150 have. 12A is a view showing a front surface 120a and a back surface 120b of the display panel 120 constructed in this way, that is, the first guide display unit 130 and the second guide display unit 150 are both formed by a reflective sheet or paint .

With this configuration, when the rear surface 120b of the display panel 120 in which the second guide display unit 150 is located is used as a display surface recognized by the driver or the pedestrian, the front surface 120a of the display panel 120, The second LED panel 170 is driven in a situation where the second LED panel 170 is not driven and the visibility is low in a state of good visibility, thereby improving the visibility of the second guide display unit 150. [

In addition, the second guide display unit 150 may be formed only of the second LED panel 170 having a plurality of LEDs without using a reflection sheet or paint. In this case, only one kind of guide display information can be displayed on the front surface 120a of the display panel 120, and various kinds of information can be displayed on the rear surface 120b of the display panel 120 by driving the second LED panel 170. [ Can be provided. 12B shows a front surface 120a and a back surface 120b of the display panel 120 constructed as described above. The first guide display unit 130 is formed of a reflective sheet or paint, and the second guide display unit 150 Only the LED panel 170 is shown.

Fig. 6 shows the front surface 122a of the second one of the four divided panels of the display panel 120, and Fig. 7 shows the rear surface of the divided panel 122b of Fig. These figures all show the LEDs are driven for visibility improvement. Here, the divided panel of Fig. 7 rotates 180 degrees, and can display the guidance display information shown in Fig.

As described above, the power saving LED indicator according to the second embodiment of the present invention can provide guidance display information only by the first guide display unit 130 without operating the first LED panel 140 during the day with good visibility, The visibility can be improved by operating the first LED panel 130 and passing through the first guide display unit 130 and illuminating the light when the visibility is poor or when the weather is bad. Therefore, the LED is driven only in a situation where the visibility is low, so that the power consumption can be reduced and the lifetime of the LED can be increased.

In addition, the display panel 120 is rotated 180 degrees so that the positions of the first guide display unit 130 and the second guide display unit 150 are reversed, thereby selectively providing two kinds or different kinds of guide display information.

8 to 11, a power saving LED cover system according to the present invention will be described. The power saving type LED indicator system according to the present invention is the same as the display panel 120, the rotation means, the first guide display unit 130, the first LED panel 140, the second guide display unit 150). The second guide display unit 150 may be formed by applying a reflective sheet or a coating material, and may include a second LED panel 170 inside the second guide display unit 150, as described in the second embodiment of the present invention. Or the second guide display unit 150 may be configured only as the second LED panel 170, as described in the second embodiment of the present invention.

In addition, the power saving LED indicator system according to the present invention further includes a control unit 180 for controlling the operation of the rotation means and the lighting of the first LED panel 140 and the second LED panel 170.

9 is a view illustrating a driving circuit of an LED panel of a power saving type LED labeling apparatus according to a second embodiment of the present invention. The front face 121a to 124a of one of the divided panels 121 to 124 of the display panel 120, And LEDs 140a to 140c and 170a to 170c provided on the back surfaces 121b to 124b, respectively. The driving circuit for controlling the LEDs disposed on the front and rear surfaces of any one of the divided panels constituting the marking device includes switching elements 141, 142 and 143 connected to the respective LEDs, The on / off of the corresponding LED can be controlled according to the driving of the LEDs.

Preferably, LEDs disposed on both sides of the display panel 120 are connected to the switching devices 141, 142, and 143 at the same time. Therefore, the lighting of the LEDs disposed on the front and back surfaces of the display panel can be controlled simultaneously by the operation of one switching element. 9, the LED 140a on the front surface 120a of the display panel 120 and the LED 170a on the rear surface 120b may be connected to one switching element 141 and simultaneously controlled. Similarly, the LED 140b on the front surface 120a of the display panel 120 and the LED 170b on the back surface 120b are connected to the single switching element 142, And the LED 140c and the LED 170c on the rear surface 120b are connected to one switching element 143. [

In this way, the LEDs on the front surface 120a of the display panel 120 and the LEDs on the rear surface 120b are simultaneously controlled by one switching element, so that switching for controlling a plurality of LEDs disposed on both surfaces of the display panel The number of elements can be reduced.

An operation of controlling the operation of the switching elements 141, 142 and 143 and the display signals for supplying power to the LEDs 140a, 140b and 140c disposed on the front surface 120a of the display panel 120, By controlling the application of the display signal 190b for supplying power to the LEDs 170a, 170b and 170c disposed on the rear surface 120a of the display panel 120 and the front surface 190a of the display panel 120, LED lighting can be done simultaneously or independently (i.e. alternately or selectively). To this end, a power supply terminal 125a for supplying power to the LEDs and a signal terminal 125b for transmitting a control signal are formed on the rotation axis 125 of the display panel 120. [

10, the LEDs 140a to 140c on the front surface 120a of the display panel 120 and the LEDs 170a to 170c on the back surface 120b are connected in parallel, and the LEDs are connected to one switching element 141 To 143 so that power is supplied. The LEDs 140a to 140c on the front surface 120a of the display panel 120 and the LEDs 170a to 170c on the back surface 120b are configured to receive the respective display signals 190a and 190b and operate individually .

Thus, by controlling the operation of the switching element and the display signal, either the front surface or the back surface of the display panel can be used as a display surface for displaying guide display information. Further, by controlling the LEDs on the front surface and the back surface by using a simple switching element instead of using a complicated switching circuit, the circuit configuration is simple, the design is easy, and the circuit construction cost can be reduced.

Here, the LEDs disposed on both sides of the display panel 120 can be connected by the shortest distance through a through hole (not shown). At this time, the LEDs must be positioned so that they can be connected by the through holes vertically penetrating the display panel 120. Therefore, the effort and cost required for circuit design can be reduced.

Meanwhile, the LEDs provided in the first LED panel 140 and the second LED panel 170 may be monochromatic LEDs designed to display one color. In addition, the LEDs may be configured to display various colors by being composed of a combination of monochrome LEDs having various colors. For example, it is possible to combine at least three LEDs each representing three colors of R (red), G (green) and B (blue) into one group, and assign these groups to the LED panels 140 and 170 So that guide display information of a desired color can be displayed through the display panel 120. [ Further, the group may further include a white LED.

Referring to FIG. 11, the power saving type LED display system according to the present invention can display various colors by controlling on / off by grouping three single color LEDs of RGB into one group. In FIG. 11, reference numeral 'C' denotes a common voltage (VCC) terminal. Here, LEDs of different colors, among the LED groups 140a 'to 140c' of the front surface 120a of the display panel 120 and the LED groups 170a 'to 170c' of the rear surface 120b, ', 142', and 143 ', and LEDs of the same color are coupled to the same switching element to control operation.

With this configuration, it is possible to simultaneously control the LEDs arranged on the front surface 120a and the back surface 120b of the display panel using only one control signal and one switching element for each color. Therefore, only three control signals and three switching elements are required to control each of the three color LEDs disposed on the front and back sides of the display panel, respectively.

Preferably, the power saving LED indicator system according to the present invention further includes an illuminance sensor 200 for sensing the illuminance of the main surface of the display panel 120. The control unit 180 controls the operation of the driving motor 164 of the rotation means and the LED lighting of the display panel 120 based on the measured value of the illuminance sensor 200. [ Specifically, the illuminance sensor 200 detects the illuminance difference between daytime and nighttime in the case of deterioration of weather, such as snow, rain, fog, etc., and the control unit 180 controls the display panel 120 is set as the display surface of the guide display information and controls the operation of the driving motor 164 of the rotating means.

Therefore, when the illuminance is high, only the guide display unit formed by applying the reflection sheet or paint is used as a marking apparatus without driving the LEDs of the LED panel, and when the illuminance is low, the visibility of the guide display unit can be increased by driving LEDs of the LED panel .

Further, the controller 180 may control the brightness of the LED according to the measured value of the illuminance sensor 200. Therefore, optimum visibility can be provided according to the surrounding illuminance.

In addition, the power saving LED indicator system according to the present invention includes a position detection unit 210 for detecting the position of the rack gear 162. The position detecting unit 210 is connected to the rack gear 162 to detect the position of the display panel 120, that is, the divided panels 121, 122, 123 and 124. The control unit 180 checks the positional states of the respective divided panels 121, 122, 123 and 124 based on the detection result of the position detecting unit 210 and controls the driving motor 164 to rotate the divided panels exactly 180 degrees. .

On the other hand, the control unit 180 can perform data communication (RS-232 or RS 422 communication) with another external control device (for example, the external data communication unit 220) 122, 123 and 124 of the display panel 120 through the control unit 180 in response to the control signal from the control unit 180. [

The control unit 180 may control the rotation of the display panel 120 by controlling the driving motor 164 of the rotation means and may control the operation of the LEDs in synchronization with the rotation of the display panel 120 have.

That is, when the driving motor 164 rotates and the front surface or the rear surface of the LED panel is completely rotated to the display surface and stopped, the control unit 180 turns on the operation of the LEDs disposed on the front surface or the rear surface, ). Then, the controller 180 turns off the operation of the LEDs of the LED panel while the display panel 120 rotates.

Accordingly, power can be prevented from being wasted by turning off the operation of the LED during the rotation of the LED panel.

12A illustrates an example of use of the power saving type LED labeling apparatus according to the present invention with reference to FIG. 12B.

<First use example> - Panel fixed type

Referring to FIG. 12A, the power saving type LED display apparatus according to the present invention can display the guide display information in a fixed form by locating the guide display information in two forms of the front panel 120a and the back panel 120b of the display panel. The symbol '↓' is fixed to the front surface 120a, and the symbol 'X' is fixed to the rear surface 120b.

Concretely, guide display information is displayed through the reflective display sheet attached to the front surface 120a or the back surface 120b of the display panel or the guide display parts 130 and 150 coated with the paint during the week in which the visibility is good, And illuminates the LED disposed inside the guide display unit 130 at nighttime or during bad weather to display the guide display information.

That is, in the case of the panel-fixed type, only one guide display information is provided in a fixed form on the front or back side of the display panel, and the display panel rotates to selectively provide the guide display information. In addition, visibility can be improved by selectively lighting the LED according to daytime and nighttime (or during bad weather).

&Lt; Second Example of Use >

Referring to FIG. 12B, the power saving type LED display apparatus according to the present invention is configured to provide only one guide display information on the front surface 120a of the display panel and provide two or more guide display information on the rear surface 120b.

Specifically, the symbol '↓' is provided on the front surface 120a, the back panel 120b is provided with an LED panel 170 on which LEDs are arranged in a full matrix manner, and a power supply signal and a control signal are used So that various LEDs can be selectively driven to provide various symbols.

Therefore, the information mainly displayed on the display panel is provided on the front surface 120a by the guide display unit 130 formed by applying a reflection sheet or paint, and the LED is lit as needed to increase the visibility of the guide display unit 130 have. When various information is to be displayed in real time or periodically, the display panel is rotated so that the back surface 120b of the display panel is positioned on the display surface, and the LEDs of the full matrix type arranged on the back surface 120b are used Various types of guide display information can be displayed.

That is, in the panel semi-fixed type, information to be fixedly displayed on the front surface 120a for a long time is displayed using only the guide display unit 130 without using an LED, and when it is desired to variably display various information, The rear surface 120b is switched to the display surface and the LED panel 170 arranged on the rear surface is driven to display various guide display information (for example, weather conditions such as snow, rain, can do.

As described above, the present invention can reduce the power consumption by selectively controlling the drive of the LED according to the surrounding environment (visibility), prevent the load from being concentrated on the LED, .

The embodiments of the present invention described above are merely illustrative of the technical idea of the present invention, and the scope of protection of the present invention should be interpreted according to the claims. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It should be interpreted that it is included in the scope of right.

10, 110: case 20, 120: display panel
30: guide display section 40: LED panel
120a: front face of the display panel 120b: rear face of the display panel
121 to 124: Split panels 121a to 124a:
121b to 124b: rear surface of the divided panel 125:
130: first guide display part 140: first LED panel
140a to 140c: LEDs 141 to 143 of the first LED panel:
150: second guide display section 161:
162: Rack gear 163: Pinion gear
164: Driving motor 170: Second LED panel
170a to 170c: LED 180 of the second LED panel:
190a, 190b: display signal 200: illuminance sensor
210: position detection unit 220: external data communication unit

Claims (12)

case;
A display panel installed in the case and providing guide display information on one surface;
A guide display unit provided on one side of the display panel and attaching a reflection sheet to the display panel or applying paint to the display panel to provide the guide display information; And
And an LED panel having a plurality of LEDs arranged in a shape corresponding to the guide display unit inside the guide display unit.
case;
A display panel mounted on the case and provided with different guide display information on the front and rear surfaces, respectively, and rotatable to change positions of the front and rear surfaces;
Rotating means for rotating the display panel;
A first guide display unit provided on a front surface of the display panel and attaching a reflection sheet to the front surface of the display panel or applying paint to the front surface of the display panel to provide guide display information;
A first LED panel having a plurality of LEDs arranged in a manner corresponding to the first guide display unit inside the first guide display unit; And
And a second guide display unit provided on a back surface of the display panel and providing guide display information different from the first guide display unit.
3. The method of claim 2,
The second guide display unit may attach a reflection sheet to the back surface of the display panel or apply paint to provide guide display information,
Further comprising a second LED panel having a plurality of LEDs arranged in a manner corresponding to the second guide display unit inside the second guide display unit.
3. The method of claim 2,
Wherein the second guide display unit includes a second LED panel having a plurality of LEDs to provide various guide display information.
5. The method according to any one of claims 2 to 4,
Wherein the display panel comprises a plurality of divided panels,
The rotary unit includes a rotary gear provided on a rotary shaft of each of the divided panels, a rack gear meshed with all of the rotary gears, a pinion gear engaged with the rack gear to move the rack gear in the longitudinal direction, And a drive motor for rotating the LED.
A display panel rotatable to change the positions of the front and rear surfaces, the front panel and the rear panel being provided with different guide display information;
Rotating means for rotating the display panel;
A first guide display unit provided on a front surface of the display panel and attaching a reflection sheet to the front surface of the display panel or applying paint to the front surface of the display panel to provide guide display information;
A first LED panel having a plurality of LEDs arranged in a manner corresponding to the first guide display unit inside the first guide display unit;
A second guide display unit provided on a rear surface of the display panel and providing guide display information different from the first guide display unit; And
And a control unit for controlling operation of the rotation unit and lighting of the first LED panel.
The method according to claim 6,
The second guide display unit may attach a reflection sheet to the back surface of the display panel or apply paint to provide guide display information,
Further comprising a second LED panel having a plurality of LEDs arranged in a manner corresponding to the second guide display unit inside the second guide display unit.
The method according to claim 6,
Wherein the second guide display unit includes a second LED panel having a plurality of LEDs to provide various guide display information.
9. The method according to claim 7 or 8,
Further comprising an illuminance sensor for sensing ambient illuminance,
Wherein the control unit controls operation of the rotating means and LED lighting of the display panel based on the measured value of the illuminance sensor.
9. The method according to claim 7 or 8,
The first LED panel and the second LED panel are controlled to be turned on / off by a single switching element, and the controller turns on the first LED panel and the second LED panel simultaneously Or the switching element is controlled so as to be independently performed.
9. The method according to claim 7 or 8,
Wherein the control unit turns off the first LED panel and the second LED panel while the display panel is rotating and stops the rotation of the first LED panel and the second LED panel when the rotation of the display panel is stopped, And the LED panel is turned on only.
9. The method according to claim 7 or 8,
Wherein the first LED panel and the second LED panel each include a group of monochromatic LEDs of different colors, the monochromatic LEDs of different colors are coupled to separate switching elements, and the LEDs of the same color are coupled to the same switching element Wherein the light emitting diode (LED)

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