KR200364180Y1 - Display devise using light emitting diodes - Google Patents

Abstract

The present invention is a display device using a light emitting diode that represents an advertisement or sign using light, comprising: a light emitting unit for emitting light consisting of a plurality of light emitting elements; A control unit controlling power to be supplied to each light emitting diode according to a control signal set to various channels in the light emitting unit so that each light emitting device emits light at a predetermined brightness; A light guide plate configured to uniformly spread the light emitted from the light emitting part on the entire acrylic surface; A reflection sheet attached to both a rear surface and a side surface of the light guide plate to diffuse light to the front surface; A cover provided at an upper portion or a lower portion of the light guide plate to fix an upper portion of the light guide plate and protect a control unit and a light emitting unit; And a power supply unit supplying power to the light emitting unit and the control unit.

Description

Display device using light emitting diodes {DISPLAY DEVISE USING LIGHT EMITTING DIODES}

The present invention relates to a display device for displaying an advertisement by using light of a light emitting diode, and more particularly, the light emitted from the light emitting diode can be transmitted through the light guide plate and the reflective sheet to diffuse the light can be a surface emission It relates to a display device to make.

Conventionally, a display device using a light emitting diode is a dot light-emitting and formed in the form of flowing letters of an advertisement board, so it is difficult to be used for general signage or signage because no advertising effect can be expected in a past situation.

In addition, the signboards equipped with the conventional fluorescent lamps are thick with a thickness of about 30Cm in the rear method, and after a certain period of time, the brightness of light is not uniform, and the staining is not good.

In addition, the use of the sign is expensive electricity, short life and can be used only in a certain form, the fluorescent material, which is a glass material is fragile and can not be used repeatedly once broken.

Therefore, conventionally, a lot of light panels using cold cathode discharge lamps have been used, and a display device using light guide plate technology for scattering and brightening the light of a cold cathode fluorescent lamp (CCFL) evenly across the panel is used.

However, since the cold cathode fluorescent lamp (CCFL) reacts sensitively at low temperatures below minus 14 degrees, it cannot be used outside of low temperature.

In addition, the cold cathode fluorescent lamp (CCFL) has to have a minimum thickness of at least 3.5 cm due to the size of the cold cathode fluorescent tube, the thickness of the glass tube, and the use of an inverter according to the size and thickness of the liquid crystal display device. Since the discharge lamp is thin, it is easy to be broken, and a broken lamp has to be replaced by an expert, so there is a problem that it is difficult to manage later.

An object of the present invention is to solve the above problems, the light emitting diode to allow the light emitted from the light emitting diode to pass through the light guide plate so that the surface light emitting the light of uniform brightness on a certain surface can be made It is to provide a display device used.

In addition, another object of the present invention is to install a series of light emitting diodes to face each other at a predetermined distance in a predetermined region without using a plurality of light emitting diodes as in the prior art in order to use a smaller number of light emitting diodes The present invention provides a display device using a light emitting diode in which light emitted from the light is transmitted through the light guide plate.

1 is a conceptual diagram showing the overall configuration of a display device using a light emitting diode according to the present invention.

Figure 2 is a schematic separation perspective view showing a whole display device using a light emitting diode according to the present invention.

Figure 3a is a view showing an embodiment of the light emitting unit according to the present invention, Figure 3b is a cross-sectional view showing a cross section taken in the AA 'direction of Figure 3a.

Figure 4 is an exemplary view of the control unit and the light emitting unit of the display device using a light emitting diode according to the present invention.

5A and 5B are internal circuit diagrams of a control unit and a light emitting unit of a display device using a light emitting diode according to the present invention.

Figure 6a is a view showing a top cover is inserted into the upper part of the PCB of Figure 5a, Figure 6b is a view showing a top channel type cover is inserted into the top of Figure 5b.

<Description of Signs of Major Parts of Drawings>

110: power supply unit 120: control unit

130: light emitting unit 140: light guide plate

150: reflective sheet 180: back board

190: Advertisement 200: PCB

210: light emitting diode 220: resistance

230: connection portion 240: the main line

250: bar line 260: 1 channel

270: 2 channel 300: Cover

310: top cover 320: top channel type cover

330: power supply input unit 350: PCB input unit

360: protrusion

In order to achieve the above object, a feature of the present invention is a display device using a light emitting diode that expresses an advertisement or a sign using light, the light emitting unit for emitting light consisting of a plurality of light emitting elements, Control unit for controlling the power supplied to each light emitting diode according to a control signal set to various channels in the light emitting unit to control each light emitting device to emit light at a predetermined brightness, the light emitted from the light emitting unit is the entire acrylic surface A light guide plate configured to be uniformly spread on the light guide plate, a reflective sheet attached to both the back and side surfaces of the light guide plate to diffuse light to the front side, and fixed to an upper portion of the light guide plate and provided at the upper or lower portion of the light guide plate to protect the controller and the light emitting unit. Cover and a power supply for supplying power to the light emitting unit and the control unit A display device using a light-emitting diode, characterized in that

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

1 is a view showing the configuration of a display device using a light emitting diode according to the present invention.

That is, the display device using the light emitting diode according to the present invention, as shown in Figure 1, the power supply unit 110 for supplying power received from the outside to the light emitting diode display device, the power supplied from the power supply unit 110 A control unit 120 for converting a control signal to control the power supplied to each light emitting diode according to a control signal set to various channels, a plurality of light emitting elements for emitting light of the light emitting diode according to the command of the control unit 120 The light emitting unit 130 configured to include a light guide plate 140 configured to uniformly spread the light emitted from the light emitting unit 130 to the entire acrylic surface, the light guide plate 140 is attached to both the back and the side of the light to the front It comprises a reflecting sheet 150 to diffuse, the cover 300 is inserted into the light emitting diode and the resistor is mounted on the reflective sheet 150 and the light guide plate 140 The light emitting diode is emitted through a current supplied from the power supply unit 110, and the emitted light is surface-emitted to the display apparatus through diffused light on the reflective sheet 150 through the light guide plate 140. Express water.

The power supply unit 110 is a means for supplying power required for the LED display device. As a method of supplying power, various methods, such as a method of converting an external AC voltage into a DC voltage and supplying the same, and a method of providing a battery with its own power supply unit 110 in the display device may be used.

The controller 120 is configured to control the power supplied to each light emitting diode according to a control signal set to various channels so that the light emitting diodes 210 emit light having a desired brightness.

In addition, the LED and resistor are mounted on the PCB through the power supply line to form ON / OFF type and CH type circuit diagram, and the circuit diagram composed of ON / OFF type flashes a single color LED and the CH diagram consists of various colors. LEDs are configured to blink. The wiring structure of the light emitting diode of the controller 120 will be described later in detail with reference to FIGS. 5A and 5B.

The light emitting unit 130 is composed of a plurality of light emitting elements for emitting light of the light emitting diode according to the command of the control unit 120, the light emitting unit 130 of the present invention is a plurality of single color light emitting diodes or In order to reduce the number of light emitting diodes, a series of light emitting diodes having various colors are used, and a series of light emitting diodes are installed to face each other so as to emit light by supplying power.

The light guide plate 140 performs a special cutting and printing process so that the light emitted from the light emitting unit 130 can be uniformly spread over the entire acrylic surface, and the light emitting diode coupled to the upper, lower, left, and right side PCBs of the light guide plate 140 in the form of a line. Means for realizing surface emission after attaching a frame cover to protect the display device.

Reflective sheet 150 is attached to both the back and side of the light guide plate 140 is a means to diffuse the light to the front and to uniformly diffuse the light.

As a film for diffusing light of the light guide plate 140, a material capable of diffusing light such as PVC, epoxy, polyethylene, or the like is used.

In addition, the biggest feature of the present invention is that the light emitted from the light emitting diodes is not directly displayed, but is diffused by the reflective sheet 150 so that the brightness of the light of a certain area as a whole to indirect light emission so that the surface emission. . Therefore, by using indirect surface light emission, it is possible to obtain the effect of mounting a large number of light emitting diodes even when using a small number of light emitting diodes.

2 is a view showing an overall display device using a light emitting diode according to the present invention.

That is, as shown in Figure 2, the display device using a light emitting diode according to the present invention, the back board 180 is present on the back, the light guide plate 140 which is a film for diffusing light and the light guide plate 140 on the Reflective sheet 150 for forming a top cover 310 into which the PCB is coupled to the light emitting diode 210 is inserted, and is attached to both the back and side of the light guide plate 140 to uniformly diffuse the light to the front And, since the advertisement material 190 is attached to the front of the light guide plate 140, the light is emitted by using the light emitting diode 210 of the PCB inserted into the groove of the top cover 310.

In addition, the display device using the light emitting diode is not affected by the temperature change and is not restricted by the installation location, and the display device can be attached to a moving vehicle or the like to display the advertisement 190.

First, FIG. 3A is a view illustrating an embodiment of a light emitting unit according to the present invention, and FIG. 3B is a cross-sectional view illustrating a cross section taken along the line AA ′ of the light emitting unit illustrated in FIG. 3A.

As shown in FIG. 3A, when it is desired to display the light emitting diode 210 on the display device, a series of light emitting diodes 210 and resistors 220 are shown in the upper, lower, left and right ends of the corresponding region. As described above, the light emitting diodes 210 emit light when power is applied from the power supply unit 110 so as to face each other.

Meanwhile, FIG. 3B is a side cross-sectional view of FIG. 3A, in which a display material using light emitting diodes is diffused to one side to display an advertisement.

As shown in the figure, the display device using the light emitting diode includes a reflective sheet 150, a light guide plate 140, an advertisement 190, a PCB 200, and a light emitting diode 210.

Light guide plate 140 to uniformly spread the light on the entire acrylic surface by the light emitted from the light emitting diode 210 mounted on the PCB 200, and a reflective sheet (on the back and side of the light guide plate 140) 150 to treat the light is diffused and come out uniformly to the front, and the advertisement 190 is formed on the light guide plate 140 to be visually displayed.

4 is a view illustrating a control unit and a light emitting unit of a display device using a light emitting diode according to the present invention, in which a light emitting diode and a resistor are coupled to a PCB in a predetermined form.

That is, the control unit and the light emitting unit may include a light emitting diode 210 expressing that light is visually emitted, a PCB 200 in which the light emitting diode 210 is connected to a power supply unit, and mounted between the light emitting diode 210. Positioned is configured to include a resistor 220 for controlling the current flowing through the light emitting diode 210 and the PCB 200, the connection portion 230 is formed to attach a plurality of the PCB (200).

First, the PCB 200 to which the light emitting diode 210 and the resistor 220 are attached is formed of a thin plate having a thickness of less than 1 mm, and is configured to be used in atypical form using a material that can be bent or bent.

In addition, the light emitting diodes 210 are configured to display almost all colors as well as white and red for high brightness, are attached to the PCB 200 at regular intervals, and the plurality of light emitting diodes 210 A resistor 220 is attached between predetermined intervals to control the current flowing through the light emitting diodes.

The light emitting diodes 210 and the resistors 220 are attached to the PCB to control the power supplied to each light emitting diodes 210 according to a control signal to control the blinking of the light emitting diodes.

The connection unit 230 is configured by connecting and attaching a plurality of PCB 200 according to the size of the advertisement to form a continuous PCB (200).

FIG. 5A is a circuit diagram of an embodiment of a control unit and a light emitting unit of a display device using a light emitting diode according to the present invention, and shows a circuit diagram of an ON / OFF type.

FIG. 5B is a circuit diagram of another embodiment of the control unit and the light emitting unit of the display device using the light emitting diode according to the present invention, showing a CH type circuit diagram.

That is, as shown in FIG. 5A, the light emitting diodes 210 are formed at both sides with the resistor 220 interposed therebetween to form one set. It is attached in the form of regular intervals.

One set of two light emitting diodes 210 and the resistor 220 connected therebetween is formed by dividing the main line 240 and the sub line 250, and the main line 240 and the sub line 250 are power supplies. It is connected to the supply line.

The main line 240 is connected to the set of one light emitting diode 210 through a positive electrode and a power supply line, and the subwire 250 is connected to one set of a negative electrode through a power supply line to a power supply unit 110. In the case of supplying power from the light emitting diode 210, only one color represents a process of blinking.

Next, as shown in FIG. 5B, the light emitting diodes 210, which are configured in the same manner as in FIG. 5A, are formed on both sides with the resistor 220 interposed therebetween to form one set. Several are attached to the PCB (200).

In addition, three sets of light emitting diodes 210 and a resistor 220 are formed in one PCB 200, and a main line 240, a first channel 260, and a second channel 270 are formed.

The main line 240 is connected to the anode in the same way as the ON / OFF form, the first channel 260 is connected to the two sets of negative electrodes using a power supply line, the second channel 270 is three sets Is connected to one of the negative electrode through a power supply line is configured to enable a flashing state of the light emitting diode 210 when the power supply unit 110 supplies power.

6A is a view showing a top cover into which a PCB composed of the circuit diagram of FIG. 5A is inserted into a display device using a light emitting diode according to the present invention, and FIG. 6B is a top channel type cover into which a PCB composed of the circuit diagram of FIG. 5B is inserted. Figure is shown.

First, the top cover 310 illustrated in FIG. 6A is a basic type inserted into the upper portion of the display apparatus, and corresponds to the case where the circuit diagram of FIG. 5A is applied to the display apparatus. The PCB input part 350 and the protrusion part 360 formed at the upper part of the PCB input part 350 are inserted into the upper part of the light guide plate and the reflective sheet to form the upper cover 310 of the display device. do.

That is, the PCB 200 into which the light emitting diode 210 and the resistor 220 are inserted is inserted into the PCB input unit 350 to emit light between the protrusions 360, and then the emitted light illuminates the light guide plate 140. The light is emitted, and the light emitting diode 210 blinks.

Next, as shown in FIG. 6B, when the circuit diagram of FIG. 5B is applied, the upper channel type cover 320 is mounted, and when the light of the light emitting diode blinks according to the configuration controlled by the controller 120, The channel cover 320 is applied.

In addition, a power supply input part 330 is formed on the upper channel type cover 320 to control a light emitting diode 200 attached to the PCB 200. .

The above-mentioned upper cover 310 and the upper channel type cover 320 may be inserted into the lower end of the display device and used by inserting a PCB equipped with a light emitting diode and a resistor, or a PCB equipped with a light emitting diode and a resistor. It can also be used as a bottom cover to protect the display device without insertion.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention defined in the appended claims.

As described above, the present invention can diffuse and transmit the light from the light emitting diodes so that the light can be uniformly surface-emitted in a desired area. Furthermore, a small number of light emitting diodes can be used to obtain various advertisement effects. It is easy to popularize and can be used semi-permanently because maintenance cost and production unit cost are low. Therefore, it can be applied to almost all products and can be easily replaced by anyone who is not an expert.

Claims (5)

In the display device using a light emitting diode that represents an advertisement or sign using light, A light emitting unit for emitting light consisting of a plurality of light emitting elements; A control unit controlling power to be supplied to each light emitting diode according to a control signal set to various channels in the light emitting unit so that each light emitting device emits light at a predetermined brightness; A light guide plate configured to uniformly spread the light emitted from the light emitting part on the entire acrylic surface; A reflection sheet attached to both a rear surface and a side surface of the light guide plate to diffuse light to the front surface; A cover provided at an upper portion or a lower portion of the light guide plate to fix an upper portion of the light guide plate and protect a control unit and a light emitting unit; And And a power supply unit for supplying power to the light emitting unit and the control unit. The method of claim 1, The light emitting unit is a display device using a light emitting diode, characterized in that a series of light emitting elements are mounted on a PCB, the PCB is attached to at least one of the upper or lower portion of the light guide plate and the reflective sheet so as to face each other at both ends. . The method of claim 1, In the case where the light emitting device is mounted on the PCB using a power supply line and the power is supplied to the PCB, the internal circuit diagram of the ON / OFF type is configured to display the light emitting elements in a single color, and the internal circuit diagram of the CH type is provided. The display device using a light emitting diode, characterized in that can display a variety of light emitting elements. The method according to any one of claims 1 to 3, The cover serves to fix at least one of the top and bottom of the light guide plate, Display device using a light emitting diode, characterized in that the cover may be used as a cover for fixing at least one of the top or bottom of the light guide plate by inserting a PCB equipped with a light emitting diode and a resistor. The method according to any one of claims 1 to 3, The cover serves to fix at least one of the top and bottom of the light guide plate, Display device using a light emitting diode, characterized in that can be used as a cover for fixing at least one of the top or bottom of the light guide plate without inserting the PCB with the light emitting diode and the resistor.