KR20090074324A - Electric lighting apparatus using light emitting diodes - Google Patents

Abstract

An LED(Light Emitting Diode) lighting apparatus is provided to facilitate ventilation between a front side and a rear side by arranging a plurality of transparent tubes with a predetermined interval. An LED electric lighting apparatus includes a plurality of holders(410), a plurality of transparent tubes(100), a printed circuit board(200), and a driving unit(300). A plurality of holders are formed on the frame. The plurality of transparent tubes are separately arranged. Both ends of each transparent tube are fixed in the holder. A shielding layer is formed in the front side of the transparent tube. The printed circuit board is inserted into the transparent tube. A plurality of LED pixels are formed in the front side of the printed circuit board. At least one connection unit is formed in the rear side of the printed circuit board. The driving unit is connected to the connection unit. The driving unit includes a drive circuit for driving the plurality of LED pixels.

Description

Light Emitting Diodes ELECTRIC LIGHTING APPARATUS USING LIGHT EMITTING DIODES

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode electroluminescent device, and in particular, it is easy to repair or replace a printed circuit board including defective pixels while facilitating ventilation between the front and the back of the electroluminescent device and preventing light blocking due to the electroluminescent device. The present invention relates to a light emitting diode electroluminescent device capable of multiple screen configurations.

Conventional outdoor lighting apparatus is installed in a large form on the roof or exterior wall of a building for the advertising effect.

Types of outdoor lighting devices include Light Emitting Diode (LED) light, Fluorescent Discharge Tube (FDT) light, Cathode Ray Tube (CRT) light, and Liquid Crystal Display (LCD) light. Etc.

The FDT photoelectric device is a fluorescent discharge type photoelectric device, which is not used recently because of its high manufacturing cost and difficult management, and the CRT photoelectric device is a negative electrode type photoelectric device. This is heavy and not well used. On the other hand, the LCD electroluminescent device is a liquid crystal display type electroluminescent device, which not only requires a large manufacturing cost but also has difficulty in making a large size.

On the other hand, LED light-emitting device is a light-emitting device using the LED, and has the advantages of low manufacturing cost, easy management and long life, accounting for more than 90% of the outdoor light. In addition, since the LED light-emitting device uses a self-emitting LED, the power consumption is low and the response speed is high.

The LED electroluminescent device is usually formed by arranging a plurality of modules in which the LEDs 20 are arranged in a dot matrix form on the substrate 10 as shown in FIG. 1, and protects the LEDs 20 when used outdoors. A transparent case may be further provided. Since the LED 10 has to be disposed as large as the size of the photoelectric apparatus, when the photoelectric apparatus is installed around the rooftop cooler, it prevents the cooler from performing its function by blocking the ventilation between the front and the rear of the photoelectric apparatus. There is a problem. In addition, when the LED lighting device is installed on the outer wall of the building to obscure windows, etc., there is a problem in that the installation place is restricted because it blocks not only the ventilation of the building but also the sunlight supplied into the building.

In order to solve this problem, LED application device using a transparent tube has been proposed through Patent Application No. 10-2004-0061710. The technique aims to form a signboard using a plurality of transparent tubes in which the LEDs are disposed. At this time, the transparent tube is inserted into the binding hole formed in the frame, the LED inside the transparent tube is supplied with a signal through the socket formed in the bar shape in the frame. That is, in the LED electroluminescence apparatus according to this technology, a plurality of transparent tubes are connected to one socket, and the transparent tubes are fixed by a frame. Therefore, when a failure occurs in the LED device, it is not possible to individually attach or detach the transparent tube including the printed circuit board on which the defective pixel is generated. In addition, since the frame must be arranged to surround the transparent tubes, when a plurality of devices are connected and used due to the space occupied by the frame, the screens are separated from each other, making it difficult to construct a multi-screen.

Accordingly, an object of the present invention is to facilitate the ventilation between the front and rear of the light emitting device and to prevent light blocking due to the light emitting device, and to easily repair or replace a printed circuit board including defective pixels, and to enable a multi-screen configuration. The present invention provides a light emitting diode electroluminescent device.

In order to achieve the above object, the LED display device according to an embodiment of the present invention frame; A plurality of holders formed on the frame; A plurality of transparent tubes fixed at both ends to the holder and formed with a light shielding film having exposed portions on a front surface thereof and spaced apart from each other; A printed circuit board inserted into the transparent tube and having light emitting diode pixels formed on a front surface thereof and at least one connection portion formed on a rear surface thereof; And a driving unit formed with a drive circuit connected to the connection unit to drive the light emitting diode pixels, each of the light emitting diode pixels being disposed at a position corresponding to an exposed portion of the transparent tube to provide light from the light emitting diode pixels. This is emitted to the outside through the exposed portion.

The transparent tube is formed in a semi-cylindrical shape having a long front surface, and wings are formed at both sides thereof, and the printed circuit board is guided and inserted into the wings.

Watertight stoppers are inserted at both ends of the transparent tube.

The driving unit may further include a plurality of pin blocks formed with connection pins for supplying driving signals of the LEDs to the printed circuit board, and the connection unit may include connection grooves into which the connection pins are inserted.

A plurality of openings are formed on the rear surface of the transparent tube to expose the connection portions.

The waterproof stopper is a waterproof stopper made of rubber material that is combined with a shape inside the transparent tube.

The holder wraps and secures the wing portions at both ends of the transparent tube, and an upper portion thereof is opened so that the transparent tube can be inserted.

In the transparent tube, an area corresponding to the exposed portion of the light blocking film is formed in a lens shape.

In the light emitting diode electroluminescent device according to an embodiment of the present invention, the transparent tubes are spaced at predetermined intervals so that ventilation between the front and the rear of the electroluminescent device is easily prevented and light blocking is prevented, and the transparent tubes are connected to the frame through individual holders. Since it is fixed, it is easy to repair or replace a printed circuit board including a bad pixel.

In addition, according to an embodiment of the present invention, since the transparent tube is attached to the outside of the frame, and only the rubber stopper is located at both ends of the transparent tube, the screen is not separated even when a plurality of devices are connected, thereby enabling a multi-screen configuration. .

In addition, in the LED display device according to the embodiment of the present invention, a blocking film is formed on the front surface of the transparent tube except for the light emitting region of the LED to prevent light loss, and a guide groove in which the printed circuit board is inserted into the transparent tube is provided. It can be formed to minimize the flow of the printed circuit board, because the transparent tube is fixed through the holder can be prevented the flow of the transparent tube is stable.

In addition, according to the present invention, since the light emitting region is formed in the form of a lens, there is an efficient optical effect in condensing and the like.

Other objects and advantages of the present invention in addition to the above object will be apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 9C.

2 is a view showing a light emitting diode electroluminescent device according to an embodiment of the present invention.

Referring to FIG. 2, a light emitting diode electroluminescent device according to an exemplary embodiment of the present invention includes a plurality of transparent tubes 100 in which a light shielding film 110 having an exposed portion 110a is formed on a front surface thereof and spaced apart from each other, and emits light on a front surface thereof. Diode pixel 210 is formed and the printed circuit board 200 is inserted into the transparent tube 100, the frame 400 is fixed to the front surface of the transparent tube 100, and formed on the back of the frame 400 to emit light The driver 300 driving the diode pixel 210 is included.

3 is a diagram illustrating that the printed circuit board 200 illustrated in FIG. 2 is inserted into the transparent tube 100.

2 and 3, the transparent tube 100 is formed in a semi-cylindrical shape having a long front surface, and wing portions 120 are formed at both sides thereof, and guide grooves 120a are formed inside the wing portions 120. Is formed. The light shielding film 110 is formed to cover the front portion of the transparent tube 100 and the front of the wing portion 120. As the light shielding film 110, a sheet of an opaque material that can block light such as aluminum may be used. The light shielding film 110 may be formed by printing a light shielding pattern, or painting and coating a dye or a pigment. In this case, various graphics or photographs may be formed on the outer surface of the light shielding film 110. In this case, there is an advantage of maximizing the visual effect together with the light generated from the light emitting diode pixel 210, and the light emitting diode pixel 210. Even if it is turned off, it is effective in advertisements and the like.

The light blocking film 110 is formed to have an exposed portion 110a exposing a part of the entire surface of the transparent tube 100. The exposed part 110a is formed in a region where the light emitting diode pixel 210 is to be disposed so that light generated in the light emitting diode pixel 210 can be emitted to the outside. In this case, the light blocking film 110 serves to block the light flowing from the outside so that the light emitted from the light emitting diode pixel 210 can be easily seen from the outside. In addition, the light shielding film 110 prevents loss of light by allowing the light to be emitted to the outside through the exposure part 110a by reflecting back the light generated by the light emitting diode pixel 210 and incident into the light shielding film 110. . In order to maximize this effect, the inside of the light blocking film 110 may be formed of a reflective material.

The exposed portion 100a is formed in a curved surface according to the shape of the front surface of the transparent tube 100 having a long semi-cylindrical shape, which is effective for emitting light generated from the light emitting diode pixel 210.

The transparent tube 100 is formed of a transparent material such as plastic such as polyethylene or polypropylene, and is disposed at a predetermined distance d from a neighboring transparent tube 100. The distance d between the transparent tubes 100 may be variously changed according to the size, use, and use space of the light emitting apparatus. Therefore, according to the LED electroluminescent device according to the embodiment of the present invention, because the ventilation between the front and the rear of the electroluminescent device is easy, and the light blocking can be prevented, the LED electroluminescent device does not interfere with the role of the cooler even when installed on the main surface of the cooler on the building roof. In addition, even if installed in the window of the outer wall of the building there is an effect that the ventilation or light is not blocked. In addition, due to such an effect, the LED electroluminescent device according to an embodiment of the present invention can be installed indoors as well as outdoors.

2 and 3, the light emitting diode pixels 210 formed on the front surface of the printed circuit board 200 each include a plurality of light emitting diodes (“LEDs”). The LED may include at least one red LED 210a, at least one green LED 210b, and at least one blue LED 210c, through which a graphic screen, text, and video of various colors may be expressed. . The arrangement of the LEDs 210a, 210b, and 210c illustrated in FIGS. 2 and 3 is only an example, and the color order may be variously arranged according to the light emitting device, and the positions of the LEDs 210 may be changed in various ways. It is possible. As the LED, general LED, high brightness LED, chip LED, etc. may be used.

The LED pixels 210 are arranged to be spaced apart from each other on the printed circuit board 200 at regular intervals, and when inserted into the transparent tube 100, the exposed part 110a in the front inner space 130 of the transparent tube 100. Are located so as to correspond to their positions. The printed circuit board 200 is guided and inserted by the guide groove 120a in the wing 120 of the transparent tube 100 so that the flow of the printed circuit board 200 hardly occurs when using the all-optical device.

At least one connection part 220 including a connection groove 220a as shown in FIG. 4A is formed on a rear surface of the printed circuit board 200. The connection part 220 is exposed to the outside through the opening part 100b formed in the back surface 100a of the transparent tube 100. The connection grooves 220a of the connection unit 220 are inserted into the connection pins 310a formed in the pin block 310 of the drive unit 300 illustrated in FIG. 4B, so that the printed circuit board 200 may be separated from the drive circuit of the drive unit 300. ) Is a driving signal for driving the light emitting diode pixels 210. The connection part 220 and the driving part 300 may be located anywhere on the back surface 100a of the transparent tube 100, and the number of connection parts 220 may be variously formed. For example, when two connecting portions 220 as shown in FIG. 4A are disposed in the middle portion of the transparent tube 100 as shown in FIG. 2, one connecting portion 220 is formed by the upper LED pixel ( The driving signals may be supplied to the 210, and the other connector 220 may supply the driving signals to the LED pixels 210 below.

In order to protect the LED pixel 210 and the printed circuit board 200, the waterproof plug 140 as shown in FIG. 5 is inserted at both ends of the transparent tube 100 into which the printed circuit board 200 is inserted. The waterproof stopper 140 may be formed to conform to the shape of the inside of the transparent tube 100, and may be formed of a material such as rubber or silicone in order to increase the adhesion to the inside of the transparent tube 100. In addition, in order to increase the waterproof effect, as shown in FIG. 5, a part may be inserted into the transparent tube 100 and a part may be formed to cover the end of the transparent tube 100.

As shown in FIGS. 6A and 6B, the frame 400 is provided with a holder 410 for fixing both ends of the transparent tube 100. The holder 410 may be fixed to the frame 400 through the screw 400a as shown in FIG. 6A, or may be attached to the frame 400 using adhesive or soldering. When it is fixed through the screw 400a, a fastening hole 410a is formed in the bottom of the holder 410, and a fastening groove 400a is formed in the frame 400. The holder 410 surrounds and fixes the wing 120 of the transparent tube 100, and has an open top portion so that the transparent tube 100 can be inserted therein. The holder 430 of another embodiment illustrated in FIG. 7A includes a guide part 430a to facilitate the insertion of the transparent tube 100. The holder 440 of another embodiment illustrated in FIG. 7B includes the transparent tube 100. The inner part is formed in the shape of the wing part 120), and the fixing force is improved by being fully joined with the back surface of the wing part 120 and the transparent tube 100.

That is, in the exemplary embodiment of the present invention, since each transparent tube 100 is fixed to the frame 400 by an individual holder and receives a signal from the driver 300 by the individual connection unit 220, a bad pixel is generated. Even if there is an advantage that the individual detachment and repair of the transparent tube 100 including the printed circuit board on which bad pixels are generated.

The driving unit 300 is formed on the rear surface of the frame 400, and as described above, the position of the driving unit 300 may be anywhere on the rear surface of the frame 400. As shown in FIG. 2, the frame 400 may not only be formed in a rectangular frame shape, but may also be manufactured in various forms according to the purpose of the electric light apparatus. In addition, the LED light emitting device according to an embodiment of the present invention can easily enlarge the size of the light emitting device by connecting a plurality of LED light emitting devices as shown in FIG. At this time, since only the waterproof plug 140 is formed at both ends of the transparent tube 100 according to the present invention, even if a plurality of LED lighting apparatuses are connected, the connected LED lighting apparatuses do not greatly open, thereby enabling a multi-screen configuration.

8 is a cross-sectional view of the transparent tube 600 according to another embodiment of the present invention, wherein the transparent tube 600 of the portion corresponding to the light emitting area of the LED 520 formed on the printed circuit board 500 is An example formed to have a lens shape is shown. For this reason, when using a device having a wide viewing angle, such as a chip LED, there is an optical effect in condensing, etc., it is more effective when the transparent tube 600 is arranged horizontally.

9A through 9C illustrate various examples of implementing a lens shape on a light emitting area of an LED in a manner different from that shown in FIG. 8.

First, referring to FIG. 9A, the transparent tube 100 has the same shape as that shown in FIGS. 3 and 5, and the lens pillar 610 is inserted into the transparent tube 100 and attached to the transparent tube 100 through an adhesive or the like.

In FIG. 9B, the transparent tube 100 and the lens pillar 610 as shown in FIG. 9A are provided. However, unlike FIG. 9A, the lens pillar 610 is inserted into the transparent tube 100. It is attached on this transparent tube 100. In this case, the lens pillar 610 is attached before the light shielding film 110 is formed on the transparent tube 100, and the light shielding film 100 is formed on the transparent tube 100 and the lens pillar 610. Accordingly, the light generated in the light emitting diode pixel is collected through the transparent tube 100 and the lens pillar 610, and is emitted to the outside through the exposed portion 110a of the light shielding film 100.

In FIG. 9C, the transparent tube 100 having the same shape as that of FIG. 9B is provided, and the lens pillar 620 is formed on the transparent tube 100. However, in FIG. 9B, the lens pillar 610 is located throughout the upper portion of the transparent tube 100. Unlike that formed in FIG. 9C, the lens pillar 620 is attached only to a region in which light is emitted from the upper portion of the transparent tube 100, that is, an exposed portion of the light blocking film 110. In this case, since the lens pillar 620 has a size corresponding to the exposed portion of the light blocking film 110, the lens pillar 620 may be attached to the transparent tube 100 before or after the light blocking film 100 is formed.

As such, the LED electroluminescent device according to the embodiment of the present invention facilitates ventilation between the front and the back of the electroluminescent device and prevents light blocking by inserting the LEDs into the transparent tube and arranging the transparent tubes at a predetermined interval. Can be.

In addition, the LED electroluminescent device according to an embodiment of the present invention is effective in transmitting light from the LED to the outside by preventing light loss by forming a blocking film on the front surface of the transparent tube except for the region from which the light from the LED is emitted.

In addition, according to the present invention, a guide groove into which the printed circuit board is inserted is formed in the transparent tube, thereby minimizing the flow of the printed circuit board and minimizing the flow of the transparent tube by fixing both ends of the transparent tube through the holders. Can be.

In addition, according to the present invention, since the light emitting region is formed in the form of a lens, there is an efficient optical effect in condensing and the like.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

1 is a view showing an LED module of a conventional LED electroluminescent device.

2 is a view showing an LED electric light device according to an embodiment of the present invention.

3 is a view showing that the printed circuit board shown in FIG. 2 is inserted into a transparent tube.

4A and 4B are views illustrating a connection part and a pin module of the LED electric light device according to the embodiment of the present invention.

5 is a view showing a waterproof stopper of the LED electroluminescent apparatus according to an embodiment of the present invention.

6A and 6B are views illustrating a holder of an LED electroluminescent device according to an embodiment of the present invention.

7A and 7B are views illustrating other examples of the LED electroluminescent holder according to the embodiment of the present invention.

8 is a view showing a cross section of the transparent tube according to another embodiment of the present invention.

9A-9C illustrate examples of implementing a lens shape on a light emitting area of an LED.

<Brief description of symbols for the main parts of the drawings>

10: substrate 12, 210a, 210b, 210c, 520: LED

100, 600: transparent tube 100b: opening part

110: light shielding film 110a: exposed part

120: wing 140: waterproof stopper

200, 500: printed circuit board 210: LED pixel

300: drive unit 310: pin module

310a: connection pin 400: frame

400a: Fastening grooves 410, 430, 440: Holder

410a: fastener 420: screw

610, 620: lens pillar

Claims (8)

frame; A plurality of holders formed on the frame; A plurality of transparent tubes fixed at both ends to the holder and formed with a light shielding film having exposed portions on a front surface thereof and spaced apart from each other; A printed circuit board inserted into the transparent tube and having light emitting diode pixels formed on a front surface thereof and at least one connection portion formed on a rear surface thereof; And A driving part having a drive circuit connected to the connection part to drive the light emitting diode pixels Including, Each of the light emitting diode pixels is disposed at a position corresponding to an exposed portion of the transparent tube so that light from the light emitting diode pixels is emitted to the outside through the exposed portion. The method of claim 1, wherein the transparent tube, The front surface is formed in a long semi-cylindrical shape, the wings are formed on both sides of the light emitting diode electroluminescent device, characterized in that the printed circuit board is guided and inserted into the inside of the wing. The method of claim 2, Light emitting diode electroluminescent device, characterized in that the waterproof plug is inserted in both ends of the transparent tube. According to claim 1, The driving unit may further include a plurality of pin blocks formed with connection pins for supplying driving signals of the light emitting diode pixels to the printed circuit board. And the connection part includes connection grooves into which the connection pins are inserted. The method of claim 4, wherein The backside of the transparent tube is a light emitting diode electro-optical device, characterized in that a plurality of openings for exposing the connecting portion is formed. The method of claim 3, wherein The waterproof plug is a light emitting diode light-emitting device, characterized in that the waterproof stopper made of a rubber material that is matched with the shape of the inside of the transparent tube. The method of claim 2, The holder is wrapped around and fixed to the wings of the both ends of the transparent tube, the light emitting diode electroluminescent device, characterized in that the top is opened so that the transparent tube can be inserted. According to claim 1, The transparent tube is a light emitting diode electro-optical device, characterized in that the area corresponding to the exposed portion of the light shielding film is formed in the form of a lens.

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