KR20170064311A - Apparatus for controlling luminace of information displays guide using LED and Method thereof - Google Patents

Abstract

The present invention relates to an apparatus and method for controlling brightness of a guide sign using an LED, and more particularly, to an apparatus and method for controlling brightness of a guide sign using an LED, So that the brightness of the LED is increased so that the brightness of the guide sign can be maintained.
The present invention provides a light emitting diode (LED) comprising: a plurality of light source LED sets; Confirming whether the light source LED set is turned off based on an output or operation state of the light source LED set; Determining a set of light source LEDs to be operated based on the output or operating state of the light source LED set; And applying a full or predetermined current of a current applied to the turned-off light source LED to the set of operated light source LEDs.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus and a method for controlling a brightness of a guide sign using an LED,

The present invention relates to an apparatus and method for controlling brightness of a guide sign using an LED, and more particularly, to an apparatus and method for controlling brightness of a guide sign using an LED, So that the brightness of the LED is increased so that the brightness of the guide sign can be maintained.

Generally, the LED light source is configured to match the color of the response dot corresponding to the guide display. The response dots of the corresponding color are reacted to the light color of the operated LED so that the movement of the guidance display is realized. The reaction dots corresponding to the display position of the guide display are configured to be different from each other so that the reaction dots of the same or similar colors are sequentially displayed on the flashing light colors of the LED light sources in the dark at night, So that the movement can be implemented as if the whole, left or right or up / down position of the guide mark corresponding to the reaction dot is changed, so that the guide light is displayed by the flicker response of the reflection operation of the reflective dot without the direct glare of the LED light source The movement can be implemented as if the whole, left, right, or up and down positions of the guide display are changed, so that the ability to transmit the guide display to the driver can be drastically improved even in the dark night.

In addition, when the operation of some of the plurality of LEDs used as a light source is turned off by irradiating light to the guide sign, all or a part of the current applied to the turned off LED is distributed and applied to the operated LEDs And the brightness of the LED is increased to maintain the brightness of the guide sign.

The guidance signs (road signs) of the advertisement or traffic guidance and guidance display function not only show the guidance of various road traffic but also the traffic signs on the road and various advertisement signs (signboards) of other business places, And its function and structure are continuously evolving so that it can be strongly illuminated.

For example, in the case of a guide sign installed at a certain height on the road side, it is usually applied to a shape holding frame of a metal plate by using a paint having excellent reflectivity, such as a traffic guide or direction indication, .

However, during the weekly operation, the driver can easily identify the corresponding indication on the safety sign, but only when the headlight of the vehicle is illuminated on the guide sign and the light is scattered on the reflection paint and reflection paper at night, It is not possible to know the display contents (traffic information, guide signs, etc.) before the light is examined, and the time until the contents are confirmed and recognized becomes too late. Therefore, it is possible for the driver to more easily recognize the guidance display, which is the content of the display, through the illumination light provided from the surroundings or itself, to be bright with a certain level of brightness.

Meanwhile, according to the rapid development of the electronic lighting industry, the LED light source has been widely applied to the information display panel as the lighting means. In the nighttime, the self-lighting function is illuminated and illuminated through the LED light source A guide sign has been introduced to allow the driver to more easily identify the corresponding guide sign. However, it is also possible to use a single or a plurality of LED light sources So that the driver is able to easily recognize the illuminated guide lights of the corresponding colors by illuminating the illuminating device. However, the guidance lights can be brightly illuminated by a large number of LED light sources illuminated in a dot-like fashion, but due to the brilliance of the strong LED light source directly transmitted to the driver, There are inconveniences that may cause safety accidents. In other words, if the light source is applied directly to the back of the guide sign of the guide sign as the light source is straight, the light source is directly illuminated, .

Also, conventionally, there is a problem in that the brightness of the guidance display is lowered because the color of the light emitted from the LED used as the light source does not match the color of the reactive dot.

Further, conventionally, when the operation of the LED used as a light source is turned off, the guide display may become blurry or the blackening phenomenon may occur in the middle or the whole, and the guide display may not be clear or may be erroneously displayed.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to improve an illumination structure itself capable of causing a safety accident by glare through direct light emission of an LED light source, The reaction light of the prism function, which is separately formed in accordance with the shape and size of the guide display, is reflected and passed through the relatively small number of LED light sources as compared with the light source means of the existing guide sign, It is possible to dramatically improve the transmission ability of the guidance display in which light is displayed even with a small number of light source configurations and power consumption by making it possible to display the light smoothly and clearly without direct glare as a whole, The color of the reaction dots is different, The light emitting diode of the present invention is used as a guide display function of monochromatic color. In the dark night, the response dots of the same or similar colors are sequentially reacted to the flashing light colors of the LED light source, The movement can be implemented as if it is changed so that the movement is realized as if the left / right or up / down position of the guide display is changed due to the flicker response of the reflection operation of the reflective dot without direct glare of the LED light source, There is provided an LED display panel in which a guide display of an action effect that can dramatically improve the delivery capability is changed.

It is another object of the present invention to enhance the brightness of a guidance display by matching light colors emitted from LEDs used as light sources with colors of reaction dots.

Also, in the present invention, when the operation of an LED used as a light source is turned off, a current applied to the turned-off LED is distributed to an operating LED, thereby applying an LED output to maintain the overall luminance.

In order to accomplish the above object, the LED guide sign according to the present invention may include a front transparent plate which is basically transparent and a rear finish plate located behind the front transparent plate, A guide mark attached to the inside of the front transparent plate and a dot shape of a small circle having a reflection function, the left and right or up and down positions adjacent to the dot position inside the front transparent plate facing the guide mark inside the rear closed plate are closely packed An LED light source provided on one side of the front transparent plate so as to be flashed with the same or similar color as the color of the reaction dots so that the reaction dots having different colors from each other can be reacted and reflected, A shape retaining frame for binding the front transparent plate and the rear finish plate assembled facing each other, And a power cable electrically connected thereto.

In particular, the reaction dots of the front transparent plate are made of the same or similar colors corresponding to light colors of the LED light source, which are reflective sheets or reflective ink materials attached or printed at dot positions which are the same display positions as the guide marks of the rear finishing plate, Reacted by the prism function on the illumination light transmitted from the LED light source, so that the reaction dot itself in the dot position does not deviate from the range of 5-45% so that the reaction dots in the dot position can be flashed with the uniform illumination level as a whole Wherein the ratio of the space around the reaction dot in the dot position is not out of the range of 55-95% so that the blinking illumination light of the LED light source is reflected and passed through the reaction dots arranged in the same or similar color as the LED light source And the reflected dots, which are reflected again, and the reflex reflection are applied, Adapted to the movement of which is changed by the flashing operation is implemented there is a technical feature.

According to the present invention, it is possible to prevent the illumination light emitted from the single-color or multi-color LED light source from being emitted from the side to be attached to the front transparent plate in the form of a dot corresponding to the guide display form of the rear- The reaction dot corresponding to the guidance display is not reflected by the direct response light of the LED light source but reflected and diffused through the prism of the reflective display, so that it is smooth without glare that can cause a traffic accident in the dark night It is possible to dramatically improve the transmission ability of the guide display even with a small light source configuration and power consumption, and in particular, the LED light source configured to match the color of the response dot corresponding to the guide display, The response dots of the corresponding color are reflected and operated, The movement is realized as if the left / right or up / down position of the guide display is changed due to the flicker response of the reflection operation of the reflective dot without the direct glare of the LED light source and the driving ability of the guide display is remarkably improved .

That is, in the LED guide sign according to the present invention, the guide signs of the same color attached to or formed on the transparent plate are sequentially reacted to the color change of the light source operated by the blinking operation, The movement of the guide sign can be dramatically improved by making it possible to realize the movement of the guide sign, which is made possible by the technological progress of the new operation principle of the guide sign, regardless of the night, It is expected that it will contribute greatly to safe driving by improving visibility and readability.

In particular, it is possible to structurally solve problems such as refraction or reflection caused by light of a road sign, instantaneous visual information, deterioration of glare readability, and furthermore, it is possible not only to improve distance visibility by uniform light emission, It is possible to more reliably and promptly provide the driver's view by reliably solving all the problems of the conventional road sign which is static-emitting operation without movement in the area, thereby greatly reducing the risk of a large safety accident And the energy consumption rate is very small compared to the light source, so it will contribute to low carbon green growth.

Also, according to the present invention, the color of the light emitted from the LED used as the light source is matched with the color of the reactive dot, and the brightness of the guide display can be increased by the mutual correlation of light.

In addition, when the operation of the LED used as the light source is turned off, the current applied to the LED that is turned off is distributed to the LED that is operating, thereby increasing the LED output and maintaining the overall brightness.

FIG. 1 is a block diagram of a display device according to an embodiment of the present invention. FIG. 1 is a block diagram illustrating a display device according to an exemplary embodiment of the present invention. Referring to FIG. A perspective view of an LED guide sign changing a guide sign.
FIGS. 2 and 3 illustrate an example in which a guiding dot of the present invention is formed by inserting or printing a prism-functioning reaction dot and a normal guiding mark on the inside of each of the front light-transmitting plate and the rear- State diagram.
FIG. 4 is a graph showing the relationship between the LED light source and the LED light source according to the embodiment of the present invention. FIG. Reflective and diffusive prism function is activated, so that it is smooth and bright without glare that can cause traffic accidents.
5 is a block diagram illustrating the application of power to an LED that is a light source of the present invention.
FIG. 6 is a flow chart showing the operation of the power source applied to the LED as the light source of the present invention.
7 is a view showing that a guide sign is not outputted in the case where all LEDs as a light source are off
FIG. 8 is a view showing the output of a guide sign when one light source set is turned off among a plurality of LED sets as a light source
9 is a view showing that a guide sign is outputted when two light source sets are turned off among a plurality of LED sets as a light source
10 is a view showing that a guide sign is outputted when all of a plurality of LED sets as a light source are operated
11 is a view showing that when the LED or the LED set is turned off, the blackening or the luminance is partially lowered

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, substantially the same contents will not be described in detail.

Also, when a component is described as being "connected", "coupled", or "touched" to another component, the component may be directly connected or connected to the other component, Even if the element is "connected", "coupled" or "touched", it should be understood as the same technical idea.

Also, when it is stated that an element is formed, formed or constituted, it should be interpreted as substantially the same unless otherwise defined.

Also, in the present invention, the LED is used as an example of the light source, but the present invention is not limited thereto, but may be replaced with another light source.

In describing the present invention, the light emitted from the light source is divided into light, illumination, illumination, or the like. However, since it is determined that there is not a large difference in terms of the macro, it is understood according to the contents.

Also, in the present invention, the light emitted from the light source and illuminated or irradiated to the reflective dots serves as a prism, and is reflected, refracted, diffused, and transmitted.

Further, in the present invention, the guide mark or the reflective dot is described as being attached or printed on the rear finishing plate or the front transparent plate, but it is not limited thereto and may be formed by another method.

Also, in the present invention, the reflection dot shape can be various shapes such as a circle, an ellipse, a square, a diamond and the like.

Also, in the present invention, the hue forming the reflective dot is configured to be the same as the light output from the light source, and reflection, refraction, and diffusion are further performed through association with each other to improve brightness.

Also, among the terms used in the present invention, the brightness or brightness is interpreted in the same sense unless otherwise specifically defined.

Further, in the present invention, the guidance display includes a direction indication.

As shown in FIG. 1 and FIG. 3, the present invention can be applied to a case where a multi-color (red And the light emitted from the LED light sources 30a and 30b of the LEDs 30a and 30b of the three colors of red, yellow, and green based on the three colors of green and green, Light is reflected and passed through the reaction dots 22a and 22b formed or printed on the front transparent plate 20 in the form of a dot corresponding to the form of the guide mark 12 of the rear finishing plate 10, The dots 22a and 22b are blinked and illuminated like a changing movement in which the movement is realized and the dots 22a and 22b, which are the display position 14 of the ordinary guidance display 12 attached to the display position 14 of the rear finishing plate 10, The reaction dots (2) of the front transparent plate (20) corresponding to the positions (24a) and (24b) 2a and 22b are not directly illuminated by the LED light sources 30a and 30b but reflect and diffuse through the prism function of the reaction dots 22a and 22b, The reaction dots 24a and 24b formed by different colors within the dot positions 24a and 24b are displayed smoothly and brightly without glare and they are displayed in accordance with the light colors of the LED light sources 30a and 30b Sequentially illuminated and blinked to illuminate the guide dots 12 corresponding to the reaction dots 24a and 24b as if the positions thereof are changed to exhibit movement.

That is, as shown in the separated state diagrams of FIGS. 2 and 3, among the constituent relations to which the implementation principle of the present invention is applied, the rear finishing board 10 basically includes a signal lamp of a road traffic, A guide mark 12 such as a direction mark, a position guide, or the like is attached or printed on the inner side. Basically, a guiding display of a pattern of a single color is performed, but a single character, But may be applied without limitation to a form in which a plurality of figures and colors are mixed.

The display position 14 of the guide display 12 can be changed by various reflection actions of the illumination light transmitted in the lateral direction of the LED light sources 30a and 30b of the front transparent plate 20, The reaction dots 22a and 22b whose colors are different from each other at the dot positions 24a and 24b in the same direction and in the left and right and upper and lower positions are sequentially emitted in response to the flashing light of the LED light sources 30a and 30b And is illuminated with a lighting color that is smooth, bright, and clear, and changes its movement, so that the driver can be more reliably transmitted.

As shown in the operation principle drawing of FIG. 4, the flashing operation of the LED light sources 30a and 30b is performed by the front transparent plate 20 (30a) and (30b) formed in the front transparent plate (20) and functioning as a prism, the LEDs (30a, 30b) (12) of the rear finishing plate (10) so that an illuminating operation can be performed together with reflection and diffusion of light reflected and passed through the reaction dots (22a) and (22b) The reaction dots 24a and 24 formed on the dot positions 24a and 24b of the front transparent plate 20 as the display positions 14 corresponding to the display positions The reaction dots 24a and 24b corresponding to the dot positions 24a and 24b, The LEDs 30a and 30b are flickered in accordance with the color of light emitted from the LED light sources 30a and 30b so as to smoothly and vividly illuminate the reaction dots 24a and 24b, So that it is possible to increase the illumination efficiency of the reaction dots 22 and 24 which are flickered while the changing movement is realized.

That is, the front transparent plate 20 has the shape of a small circle dot, and is formed inside the display position 12 of the rear end finishing plate 10 in the form of the display position 14 of the guide display 12 The reaction dots 22 and 24 are attached or printed differently in the entirety, left or right or up and down positions so as to be formed densely with the dot positions 24a and 24b corresponding to the sizes The reflective film may be cut and attached in the form of dots, or the reflective ink may be printed and formed in the form of dots of a predetermined size.

Particularly, the reaction dots 22a and 22b formed on or attached to the front transparent plate 20 are first irradiated with light from the LED light sources 30a and 30b, The reaction dots 22a and 22b responsive to the light colors of the LED light sources 30a and 30b at positions near the LEDs 30a and 30b are reflected while passing through the LEDs 30a and 30b, The response and the passing action are instantaneously and simultaneously exerted while the LEDs 22a and 22 are turned on and off in response to the LED light sources 30a and 30b, The retroreflection of the prism function and the diffuse reflection of the diffusing function can be operated.

That is, the reaction dots 22a and 22b formed on the front transparent plate 20 form a dot shape having a small size, unlike the guide markers 12 formed on the rear surface finish plate 10, The LED light sources 30a and 30b are illuminated by the LEDs 30a and 30b and the LEDs 30a and 30b are illuminated by the LEDs 30a and 30b. The reaction dots 22a and 22b which are reflected and illuminated in response to the color of the light emitted from the LED 30b are partially reflected by the light emitted from the reaction dots 22a and 22b, A reflective operation may be performed in which the light sources 30a and 30b are sequentially turned on and off in response to a blinking light color.

The reaction dots 22a and 22b in which the dot positions 24a and 24b of the front transparent plate 20 are formed correspond to dot positions 24a and 24b attached to the display position 14 in accordance with the shape and size of the display position 14 The ratio of the surrounding space excluding the reactive dots 22a and 22b in the dot positions 24a and 24b does not exceed the range of the reactive dots 22a and 22b itself within the range of 5-45% Is preferably configured to be relatively larger than the ratio of the reaction dots 22a and 24b itself so as not to deviate from the range of 55-95%. This is because basically the illumination light of the LED light sources 30a and 30b transmitted along the front transparent plate 20 is passed through between the reflection and reaction dots 22a and 22b with respect to the reaction dots 22a and 22b The guide marks 12 located on the rear finishing plate 10 behind these reaction dots 22a and 22b are reflected by diffused diffusions and retroreflective rays that reach and are reflected by the neighboring other reaction dots 22a and 22b, The reaction dots 22a and 22b corresponding to the display position 14 are indirectly reflected and diffused rather than directly illuminated by the LED light sources 30a and 30b so that the blinking lights of the LED light sources 30a and 30b The light emitted from the reaction dots 22a and 22b corresponding to the function of the guide display 12 can be realized by clearly emitting light without glare at night, .

Particularly, space portions in the dot positions 24a and 24b corresponding to approximately 55-95% relative to the reaction dots 22a and 22b are formed by adhesion and adhesion of these reaction dots 22a and 22b, The structure of the LED light sources 30a and 30b is structurally eliminated due to the fact that the flashing lights of the LED light sources 30a and 30b are blocked by the reaction dots 22a and 22b And the formation pattern of the attached reaction dots 22a and 22b in the form of a dot pattern having a small circular shape is entirely uniform and uniformly diffused by the bright light so that the light emitted from the LED light sources 30a and 30b The reaction dots 22a and 22b of the corresponding color are sequentially reacted and blinked according to the color of the blinking light so that the blinking light can be exerted as a guide display 12 of the rear finishing plate 10 at night.

The LED light sources 30a and 30b of the light source substrate 32 as LED modules are mounted on one side of the side surface to form a prism for transmission of illumination light through side light emission of the LED light sources 30a and 30b, The reaction dots 22a and 22b formed in a dot pattern with the reflex fabric or the ink are basically applied in the same or similar colors as the light colors of the LED light sources 30a and 30b in the red color R and the green color R Of course, other colors other than red (R) and green (R) may be selectively applied according to the light color of the LED light source.

The LED guide signboard of the present invention having the above-described configuration can easily and comfortably recognize the guide signboard to which the operation principle of the present invention is applied at night or in an emergency, not only for the driver but also for the pedestrian. In addition to the function of inducing comfortable walking, the normal function of the existing guide signs can be exercised even during normal days.

Further, since the guide sign according to the present invention structurally improves the glare that can be caused when the conventional guide display 12 is directly illuminated, it is possible to drastically reduce safety accidents, and in particular, The movement is realized as if the left / right or up / down position of the guide display is changed due to the flicker response of the operation, so that the ability to transmit the guide display to the driver can be dramatically improved even in the dark night.

Reference numeral 40 denotes an unclosed clean and stable binding state in which the rear surface finishing plate 20 and the front transparent plate 10, in which the guide mark 12 and the reaction dots 22a and 22b are formed, And a power supply cable 42 electrically connected to an external power supply unit or another solar panel 50 or the like. In addition, the LED light source 30 is preferably installed to maintain a predetermined clearance at the binding end 26, which is one side of the side surface of the rear finishing plate 10, through the light source substrate 32 so as to be bonded so as to prevent the blackening phenomenon Do.

FIG. 5 is a block diagram showing a power source applied to an LED, which is a light source of the present invention, and FIG. 6 is a flowchart illustrating an operation of applying power to an LED, which is a light source of the present invention.

5, it is presumed that the following configurations are provided, but the present invention is not limited thereto, and is applicable to general guide signs without the following configurations (dot configuration, reflective sheet).

A front transparent plate 20 made of a transparent material and a rear finishing plate 10 positioned behind the front transparent plate 20 and a guide mark 12 attached to the inside of the rear finishing plate 10 as a reflective sheet material, The dot positions 24a and 24b inside the front transparent plate 20 facing the guide marks 12 inside the rear finishing plate 10 and the dot positions 24a and 24b inside the front transparent plate 20, (22a) and (22b) made of a reflective sheet or reflective ink, which are attached or printed with the same or similar colors corresponding to the light colors of the LED light sources (30a) and (30b) The LEDs 22a and 22b provided on the side surface of the front transparent plate 20 are flickered with the same or similar color as the colors of the reaction dots 22a and 22b so that the reaction dots 22a and 22b can react and be reflected, Includes a light source set,

A light source driver for adjusting a current applied to the LED light source set; And a controller for controlling a current applied to a set of light source LEDs operated based on an operation state or an output state of the LED light source set.

The light source driver can selectively use a constant voltage or constant current method.

Also, in the embodiment of the present invention, it is preferable that two or more LEDs are connected in series to each light source set, but they may be configured in parallel. Also, each of the light source sets may be arranged in parallel with each other, but they may be configured in series.

In the present invention, the number of LEDs constituting each LED light source set is preferably 2-7, but is not limited thereto.

Also, the operating state or the output state of the LED light source set includes an operating state or an output state of each LED constituting each LED set. In this case, Lt; RTI ID = 0.0 > LED < / RTI >

Also, the operation state or the output state of the LED light source set can be checked through a separate sensor or device, or the control unit can confirm the output state through the output watt.

The operation of the present invention will be briefly described with reference to FIG.

A plurality of light source LED sets are provided. In general, one LED may be included in each light source set, but it is preferable that at least two LEDs are formed.

It is confirmed whether or not it is turned off based on the output or operating state of the light source LED set. Here, whether or not the off state is to confirm whether the LEDs in each set are partially or totally turned off.

A light source or a set of light source LEDs operated based on the output or operating state of the light source LED set is identified.

And controls the entire set or predetermined current of the current applied to the turned off light source LED or the turned off light source set to be further applied to the operated light source or the set of light source LEDs to maintain the brightness substantially equal to the normal state.

Since the current that can be applied to the LED to be operated is limited, it is controlled to be additionally applied within a predetermined maximum current range, and the rated current and the like are stored in the memory unit.

FIG. 7 is a view showing that no guide sign is output when all LEDs as light sources are off. FIG.

8 is a view showing that a guide sign is outputted in a case where one of the plurality of LED sets as a light source is turned off, in which the current applied to the turned off light source set is applied to the LED or / and LED set So that the actual luminance is the same as in Fig.

FIG. 9 is a view showing output of a guide sign when two light source sets are turned off among a plurality of LED sets as a light source, as shown in FIG. 8.

FIG. 10 is a diagram showing output of a guide sign when all of a plurality of LED sets as a light source are operated. FIG.

11 is a view showing that when the LED or the LED set is turned off, the blackening or the luminance is partially lowered

10: Rear finish plate 12: Information display
14: display position 20: front transparent plate
22a and 22b: reaction dots 24a and 24b: dot positions
30a.30b: LED light source

Claims (2)

A front transparent plate 20 made of a transparent material and a rear finishing plate 10 positioned behind the front transparent plate 20 and a guide mark 12 attached to the inside of the rear finishing plate 10 as a reflective sheet material, The dot positions 24a and 24b inside the front transparent plate 20 facing the guide marks 12 inside the rear finishing plate 10 and the dot positions 24a and 24b inside the front transparent plate 20, (22a) and (22b) made of a reflective sheet or reflective ink, which are attached or printed with the same or similar colors corresponding to the light colors of the LED light sources (30a) and (30b) The LEDs 22a and 22b provided on the side surface of the front transparent plate 20 are flickered with the same or similar color as the colors of the reaction dots 22a and 22b so that the reaction dots 22a and 22b can react and be reflected, Includes a light source set,
A light source driver for adjusting a current applied to the light source LED set; And
And a controller for controlling the light source LED or the light source LED set to increase the current applied to the light source LED or the light source LED set operated based on the operation state or the output state of the light source LED set. Device.
Providing a plurality of light source LED sets;
Confirming whether the light source LED set is turned off based on an output or operation state of the light source LED set;
Determining a set of light source LEDs to be operated based on the output or operating state of the light source LED set; And
And applying a total or predetermined current of a current applied to the turned off light source LED to the set of the operated light source LED or the light source LED.

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