KR101137860B1 - Connector using high voltage line and backlight unit having the same - Google Patents

Abstract

High voltage wiring can be safely arranged on one side, satisfies the safety standard of parallel drive inverter, and can provide high voltage wiring connector and backlight unit with the same to reduce the thickness of LCM including inverter. In order to achieve the above object, the high-voltage wiring connector includes: a first high-voltage wiring arranged in one direction; A second high voltage wiring arranged in a direction orthogonal to the first high voltage wiring and spaced apart from each other at a portion adjacent to the first high voltage wiring; It characterized in that it comprises a connector having both ends of the spaced apart the second high-voltage wiring, and having a connection pin having a predetermined height at the intersection portion of the first, second high-voltage wiring.

Connector, connecting pin, insulator, transformer, inverter PCB

Description

CONNECTOR USING HIGH VOLTAGE LINE AND BACKLIGHT UNIT HAVING THE SAME}

1 is a layout plan view of a backlight unit according to the prior art

2 is a layout plan view of a backlight unit according to another conventional technology

3 is a layout plan view of a backlight unit according to another conventional technology

4 is a front view of the connector for high voltage wiring according to the first and second embodiments of the present invention;

5A and 5B are side views of the connector for high voltage wiring according to the first and second embodiments of the present invention, taken along the line II ′ of FIG. 4.

6A and 6B are front and side views of the connector for high voltage wiring according to the third embodiment of the present invention.

7 is a plan view of a backlight unit having a connector for high voltage wiring according to a fourth embodiment of the present invention;

Explanation of symbols on the main parts of the drawings

41, 61, 77a: first high-voltage wiring 42, 62, 77b: second high-voltage wiring

43, 63, 81: connecting pins 64, 82: insulator

70: fixture 71: fluorescent lamp

72a, 72b: 1st, 2nd electrode 73a, 73b: 1st, 2nd power lead wire

74: inverter PCB 75a, 75b: first and second transformer

76: output connector 80: connector

The present invention relates to a connector for high-voltage wiring, in particular, high-voltage wiring can be arranged safely on one side, satisfies the safety standard of the parallel drive inverter, for high voltage wiring that can reduce the thickness of the LCM including the inverter It relates to a connector and a backlight unit having the same.

CRT (Cathode Ray Tube), one of the commonly used display devices, is mainly used for monitors such as TVs, measuring devices, and information terminal devices.However, due to the weight and size of the CRT itself, We couldn't respond actively to demands.

Therefore, in the trend of miniaturization and light weight of various electronic products, CRT has a certain limit in weight and size.

It is expected that the CRT will be replaced by a liquid crystal display (LCD) using an electro-optical effect, a plasma display device (PDP) using a gas discharge, and an EL display device using an electroluminescent effect ( Electro Luminescence Display (ELD) and the like, among them, research on liquid crystal display (LCD) is being actively conducted.

In order to replace the CRT, liquid crystal display devices having advantages such as small size, light weight, and low power consumption have been actively developed. Recently, the liquid crystal display device has been developed enough to perform a role as a flat panel display device. As it is used for a monitor of a desktop computer and a large information display device, the demand for a liquid crystal display device is continuously increasing.

Since most of the liquid crystal display devices are light-receiving devices that display an image by controlling the amount of light coming from the outside, a separate light source for irradiating light to the liquid crystal panel, that is, a back light unit is necessary. .

In general, a backlight unit used as a light source of a liquid crystal display device is a method of disposing a cylindrical light emitting lamp, and is divided into an edge method and a direct method.

The edge method is that the lamp unit is installed on the side of the light guide plate for guiding the light, the lamp unit is inserted into both ends of the lamp to emit light, the lamp holder to protect the lamp and the outer peripheral surface of the lamp and one side is It is provided with a lamp reflector plate fitted to the side of the light guide plate to reflect the light emitted from the lamp toward the light guide plate.

The edge method in which the lamp unit is installed on the side of the light guide plate is applied to a relatively small liquid crystal display device such as a monitor of a laptop computer and a desktop computer, and has good uniformity of light and a long service life. It is advantageous to thin the liquid crystal display device.

On the other hand, the direct method began to develop mainly as the size of the liquid crystal display device became larger than 20 inches, and arranged a plurality of lamps in a row on the lower surface of the diffusion plate to direct light directly to the front of the liquid crystal panel. will be.

The direct method is mainly used for a large screen liquid crystal display device requiring high luminance because the light utilization efficiency is higher than that of the edge method.

Hereinafter, a conventional backlight unit will be described with reference to the accompanying drawings.

1 is a layout plan view of a backlight unit according to the prior art, FIG. 2 is a layout plan view of a backlight unit according to another conventional technology, and FIG. 3 is a layout plan view of a backlight unit according to another conventional technology.

First, the backlight unit according to the prior art, for driving the lamps individually, as shown in Figure 1, both ends of the tube (Tube) is arranged in the same direction on the upper portion of the appliance 10 and the first, A plurality of U-shaped fluorescent lamps 11 including the second electrodes 12a and 12b are arranged at regular intervals, and the first and second electrodes 12a and 12b on both sides of the fluorescent lamp 11 are provided. First and second power lead wires 13a and 13b for transmitting power are connected.

In addition, an inverter PCB 14 is provided on one rear surface of the apparatus 10.

On the front surface of the inverter PCB 14, first and second transformers 15a and 15b for applying a boosted voltage to the first and second power lead wires 13a and 13b of the fluorescent lamp 11 are provided. A plurality of output connectors 16 are arranged in plural and are provided in a number corresponding to the fluorescent lamps 11 between the first and second power supply leads 13a and 13b and the first and second transformers 15a and 15b. ) Are arranged.

At this time, the output connector 16 and the first and second transformers to connect the first and second power lead wires 13a and 13b to the first and second transformers 15a and 15b through the output connector 16. First and second high voltage wirings 17a and 17b are connected between the 15a and 15b, respectively.

As described above, the backlight unit is provided with transformers at both ends of each fluorescent lamp 11 to individually drive the fluorescent lamps 11, and connects each transformer to the output connector. There is no need to secure a safety distance. However, since the transformers must be provided at both ends of the fluorescent lamps as described above, the number of transformers is large, so that there is a limit in reducing the production cost, and parallel driving is not possible.

Accordingly, a backlight unit according to another conventional technology for reducing the number of transformers while driving in parallel has been proposed.

First, as shown in FIG. 2, both ends of a tube are arranged in the same direction on an upper portion of the apparatus 20, and a plurality of U-shaped portions having first and second electrodes 22a and 22b provided therein. Fluorescent lamps 21 are arranged at regular intervals, and the first and second power lead wires 23a and 23b for transmitting power to the first and second electrodes 22a and 22b on both sides of the fluorescent lamp 21. ) Is connected.

In addition, an inverter PCB 24 is provided at one side of the rear surface of the apparatus 20.

A plurality of first transformers 25a are arranged on the front surface of the inverter PCB 24 to apply a voltage boosted to the first power lead wires 23a of the fluorescent lamp 21, respectively. A plurality of output connectors 26 are arranged between the power lead wires 23a and 23b and the first transformer 25a in a number corresponding to the fluorescent lamp 21.

At this time, between the output connector 26 and the first transformer 25a, a first high voltage wiring 27a for applying a boosted voltage to the first power lead wires 23a is connected.

A second high voltage wiring 27b (represented by a dashed line) for common grounding the second power lead wire 23b is connected to the output connectors 26.

In this case, the second high voltage wiring 27b is disposed separately on the bottom surface of the inverter PCB 24 in order to prevent a problem caused by crossing the first high voltage wiring 27a.

And although not shown in the drawings. An insulator is further provided on the rear surface of the inverter PCB 24 to surround the second high voltage wiring 27b.

Even if the second high-voltage wiring 27b is disposed on the rear surface of the inverter PCB 24 and an insulator is provided on the upper side of the inverter PCB 24, a minimum safety distance from the apparatus 20 on which the fluorescent lamp 21 is disposed may be secured. There is a need. Thus, in addition to providing a second high voltage wiring 27b and an insulator on the back side instead of the front side of the inverter PCB 24, a minimum safety distance must be ensured with the apparatus 20, resulting in a problem that the entire thickness of the LCM becomes thick. do.

In addition, in the backlight unit according to another conventional technology, as shown in FIG. 3, both ends of the tube are arranged in the same direction on the upper part of the apparatus 30, and the first and second electrodes 32a are disposed inside the both ends. And a plurality of U-shaped fluorescent lamps 31 having 32b are arranged at regular intervals, and for supplying power to the first and second electrodes 32a and 32b on both sides of the fluorescent lamp 31. First and second power lead wires 33a and 33b are connected.

In addition, an inverter PCB 34 is provided at one side of the rear surface of the apparatus 30.

On the front of the inverter PCB 34, a first transformer 35a for applying a common boosted voltage to each of the first power lead wires 33a of the fluorescent lamp 31 is disposed.

A second transformer 35b for applying a common ground voltage to each of the second power lead wires 33b of the fluorescent lamp 31 is disposed.

In addition, a plurality of output connectors 36 are disposed between the first and second transformers 35a and 35b and the first and second power lead wires 33a and 33b in a number corresponding to the fluorescent lamp 31. .

At this time, between the output connector 36 and the first transformer 35a, a first high voltage line 37a for applying a boosted voltage to the first power lead wires 33a is connected.

A second high voltage wiring 37b is connected between the output connector 36 and the second transformer 35b to transmit ground voltages to the second power lead wires 33b.

The capacitors, which are the first and second current limiting elements 38a and 38b, are connected between the first and second high voltage wirings 37a and 37b.

The above-described backlight unit is also disposed separately on the bottom surface of the inverter PCB 34 in order to prevent a problem caused by the second high voltage wiring 37b crossing the first high voltage wiring 37a.

And although not shown in the drawings. An insulator is further provided on the rear surface of the inverter PCB 34 to surround the second high voltage wiring 37b.

Even if the second high-voltage wiring 37b is disposed on the rear surface of the inverter PCB 34 and an insulator is provided on the upper side of the inverter PCB 34, a minimum safety distance from the fixture 30 on which the fluorescent lamp 31 is disposed may be secured. There is a need. As the second high voltage wiring 37b and the insulator are provided on the rear surface of the inverter PCB 34 as described above, the thickness increases. In addition, the inverter PCB 34 must secure a minimum safety distance from the apparatus 30. Therefore, the thickness of the entire LCM becomes a problem.

The present invention has been made to solve the above problems, in particular, it is possible to safely cross the high-voltage wiring on one side, to meet the safety standards of the inverter of the parallel drive method, the thickness of the LCM including the inverter An object of the present invention is to provide a high-voltage wiring connector and a backlight unit having the same.

High-voltage wiring connector according to the present invention for achieving the above object and the first high-voltage wiring arranged in one direction; A second high voltage wiring arranged in a direction orthogonal to the first high voltage wiring and spaced apart from each other at a portion adjacent to the first high voltage wiring; It characterized in that it comprises a connector having both ends of the spaced apart the second high-voltage wiring, and having a connection pin having a predetermined height at the intersection portion of the first, second high-voltage wiring.

The connecting pin is characterized in that the cross section in the longitudinal direction forms a square shape.

The connecting pin is characterized in that it further comprises a triangular shape or a curved cross-section in the longitudinal direction.

The connecting pin is connected to the spaced second high voltage wiring by soldering.

High-voltage wiring connector according to another embodiment of the present invention and the first high-voltage wiring arranged in one direction; A second high voltage wiring arranged in a direction orthogonal to the first high voltage wiring and spaced apart from each other at a portion adjacent to the first high voltage wiring; It characterized in that it comprises a connector consisting of a connecting pin for connecting both ends of the spaced second high-voltage wiring, and an insulator surrounding the middle portion of the connecting pin.

The insulator is characterized in that it is formed to surround the top, bottom, left and right of the connecting pin.

The insulator is characterized in that it is formed of a rubber material, plastic and other non-conductive material.

The backlight unit according to the present invention having the configuration described above comprises a plurality of fluorescent lamps having both ends of the tube arranged in the same direction on the upper part of the apparatus and having first and second electrodes inside the both ends thereof; First and second power lead wires connected to transfer power to first and second electrodes on both sides of the fluorescent lamp; An inverter PCB disposed on one side of the rear surface of the apparatus; First and second transformers for applying a common voltage to the first and second power supply leads of the fluorescent lamp on one surface of the inverter PCB; A plurality of output connectors disposed between the first and second transformers and the first and second power lead wires in a number corresponding to the fluorescent lamps; A first high voltage wiring arranged between the output connector and the first transformer; A second high voltage wiring spaced apart from a portion intersecting the first high voltage wiring; It characterized in that it comprises a connector for connecting the spaced second high-voltage wiring.

And first and second current limiting elements are formed between the first and second high voltage wirings, respectively.

The connector is characterized by consisting of connecting pins for connecting both ends of the spaced second high-voltage wiring.

The connecting pin has a predetermined height at the intersection of the first and second high-voltage wiring, characterized in that the longitudinal cross section is formed to form a polygon or circle shape, such as square or triangular.

The connecting pins are connected by soldering the spaced second high voltage wiring.

The connector may further include an insulator surrounding the connection pins in upper, lower, left and right.

The fluorescent lamp is characterized in that the U-shape.

Referring to the accompanying drawings, a high voltage wiring connector and a backlight unit having the same according to an exemplary embodiment of the present invention will be described.

4 is a front view of the connector for high voltage wiring according to the first and second embodiments of the present invention, and FIGS. 5A and 5B are cut views taken along the line II ′ of FIG. 4 according to the first and second embodiments of the present invention. Side view of the connector for high voltage wiring.

6A and 6B are front and side views of the high voltage wiring connector according to the third embodiment of the present invention.

As shown in FIGS. 4 and 5A, the connector for high voltage wiring according to the first embodiment of the present invention includes a first high voltage wiring 41 arranged in one direction and a direction perpendicular to the first high voltage wiring 41. The second high voltage line 42 is arranged to connect the second high voltage line 42 and the second high voltage line 42 spaced apart from each other at a portion adjacent to the first high voltage line 41. It consists of a connecting pin 43 formed in contact with both ends.

In this case, as shown in FIG. 5A, the connecting pin 43 has a predetermined height at a portion where the first and second high voltage wirings 41 and 42 are adjacent to each other, that is, a portion where the second high voltage wiring 42 is spaced apart from each other. This is to secure a high-pressure safety distance from the first high-voltage wiring 41. In FIG. 5A, the cross section in the longitudinal direction of the connecting pin 43 is formed to have a square shape.

The connecting pin 43 is connected by soldering the second high voltage wiring 42 spaced apart from each other.

Instead of the second high voltage wiring 42, the first high voltage wiring 41 may be connected to a connector using a connection pin.

Next, the high-voltage wiring connector according to the second embodiment of the present invention is formed so that the cross section in the longitudinal direction of the connecting pin 43 in a triangular shape, as shown in Figure 4 and 5b, the first high-voltage wiring 41 Except for securing a greater safety distance) and the same configuration as the first embodiment of the present invention, the description of the components will be omitted.

Next, the connector for high voltage wiring according to the third embodiment of the present invention is orthogonal to the first high voltage wiring 61 and the first high voltage wiring 61 arranged in one direction, as shown in FIGS. 6A and 6B. The second high voltage wiring (62) arranged in the direction and spaced apart from the second high voltage wiring (62) at a predetermined distance from the portion adjacent to the first high voltage wiring (61) and the spaced second high voltage wiring (62) The connecting pin 63 is formed in contact with both ends of the 62 and the insulator 64 surrounding the intermediate portion of the connecting pin 63.

In this case, the connection pin 63 has a predetermined height at a portion where the first and second high voltage wirings 61 and 62 are adjacent to each other, that is, a portion where the second high voltage wiring 62 is spaced apart from each other. This is to secure a high-pressure safety distance from 61). The connecting pin 63 is connected by soldering the second high voltage wiring 62 spaced apart from each other.

The insulator 64 is formed to surround the upper, lower, left, and right sides of the connecting pin 63, and may be formed of a rubber material, a plastic, and an insulating material having no conductivity.

In addition to the shapes described in the first to third embodiments of the present invention, the connection pins may form various shapes (eg, polygons or curves) having a predetermined height at portions where high voltage wiring crosses.

As described in the first to third embodiments of the present invention, when the connector is provided at a portion where the high voltage wiring crosses as described above, the high voltage wiring can be safely arranged on one side.

Next, a backlight unit according to a fourth exemplary embodiment of the present invention having the connector for high voltage wiring will be described.

7 is a plan view of a backlight unit having a high voltage wiring connector according to a fourth embodiment of the present invention.

In the backlight unit according to the fourth embodiment of the present invention, as shown in FIG. 7, both ends of the tube are arranged in the same direction on the upper part of the mechanism 70, and the first and second electrodes 72a are disposed in the both ends of the backlight unit. And 72b), a plurality of U-shaped fluorescent lamps 71 are arranged at regular intervals, and for transmitting power to the first and second electrodes 72a and 72b on both sides of the fluorescent lamp 71. First and second power lead wires 73a and 73b are connected.

The fluorescent lamp 71 includes various types of lamps having both ends arranged in the same direction besides the U shape.

In addition, an inverter PCB 74 is provided at one side of the rear surface of the mechanism 70.

A first transformer 75a for applying a common boosted voltage to each of the first power lead wires 73a of the fluorescent lamp 71 is disposed on the front surface of the inverter PCB 74, and the fluorescent lamp ( A second transformer 75b for applying a common ground voltage to each of the second power lead wires 73b of 71 is disposed.

In addition, a plurality of output connectors 76 are disposed between the first and second transformers 75a and 75b and the first and second power lead wires 73a and 73b in a number corresponding to the fluorescent lamps 71. .

At this time, between the output connector 76 and the first transformer 75a, a first high voltage line 77a for applying a boosted voltage to the first power lead wires 73a is connected.

A second high voltage line 77b is connected between the output connector 76 and the second transformer 75b to transmit ground voltages to the second power lead lines 73b.

The capacitors, which are the first and second current limiting elements 78a and 78b, are connected between the first and second high voltage wirings 77a and 77b.

In this case, the connector 80 is provided at a portion where the first and second high voltage wirings 77a and 77b cross each other.

For example, the first high voltage lines 77a are continuously connected to the first transformer 75a without being disconnected, and the second high voltage lines 77b adjacent to the first high voltage lines 77a are spaced apart from each other at regular intervals. The second high voltage wiring 77b spaced by the connector 80 is connected.

The connector 80 includes a connecting pin 81 that is in contact with both ends of the spaced second high voltage line 77b to connect the spaced second high voltage line 77b.

In this case, the connection pin 81 has a predetermined height at a portion where the first and second high voltage wirings 77a and 77b are adjacent to each other, that is, a portion where the second high voltage wiring 77b is spaced apart from each other. This is to secure a high pressure safety distance from 77a). In addition, the connecting pin 81 is formed such that a cross section in the longitudinal direction forms a polygon or circle shape such as a square or a triangle so as to have a predetermined height on the first high-voltage wiring 77a.

The connecting pins 81 are connected to each other by soldering the spaced second high voltage wiring 77b.

The connecting pin 81 may be formed such that the top, bottom, left and right are surrounded by the insulator 82 as in the third embodiment of the present invention.

In the above description, the second high voltage line 77b connected to the second transformer 75b is connected by a connector. However, the first high voltage line 77a may be spaced apart and connected to each other by a connecting pin of the connector.

The connector formed at a portion where the first and second high voltage wirings 77a and 77b cross each other may be configured using any one of the connectors described above in the first to third embodiments of the present invention.

When the connector having the connection pin is formed as described above, the first and second high voltage wirings 77a and 77b may be arranged on the front surface of the inverter PCB 74. In this way, since the rear of the inverter PCB 74 can be arranged on the front side without separately arranging the high voltage wiring, the inverter PCB 74 and the mechanism 70 do not need to maintain a separate safety distance as in the prior art, so the entire LCM The problem that the thickness of the film becomes thick can be prevented from occurring.

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 of the invention.

Therefore, the technical scope of the present invention is not limited to the contents described in the above embodiments, but may be modified within the scope obvious to those skilled in the art.

The high voltage wiring connector and the backlight unit having the same according to the present invention have the following effects.

First, by forming a connector having a connection pin to secure a high-pressure safety distance at the intersection of the high-voltage wiring, it is possible to safely cross the high-voltage wiring on one side.

Second, by providing a connection pin of the connector to have a certain height in the cross-arrangement, it is possible to meet the safety standards of the inverter of the parallel drive method.

Third, since the high voltage wiring can be arranged on one side of the inverter PCB, the thickness of the LCM including the inverter can be reduced.

Claims (14)

A first high voltage wiring arranged in one direction; A second high voltage wiring arranged in a direction orthogonal to the first high voltage wiring and spaced apart from each other at a portion adjacent to the first high voltage wiring; And a connector having both ends of the spaced apart second high voltage wiring and having a connection pin having a predetermined height at a portion where the first and second high voltage wiring cross each other. The method of claim 1, The connecting pin is a high-voltage wiring connector, characterized in that the cross section in the longitudinal direction to form a square shape. The method of claim 1, The connecting pin is a high-voltage wiring connector, characterized in that further comprising a triangular or curved shape cross section in the longitudinal direction. The method of claim 1, The connecting pin is a high voltage wiring connector, characterized in that connected to the second high voltage wiring is soldered apart. A first high voltage wiring arranged in one direction; A second high voltage wiring arranged in a direction orthogonal to the first high voltage wiring and spaced apart from each other at a portion adjacent to the first high voltage wiring; And a connector comprising a connecting pin connecting both ends of the spaced second high voltage wiring, and an insulator surrounding an intermediate portion of the connecting pin. The method of claim 5, The insulator is a high voltage wiring connector, characterized in that formed to surround the upper, lower, left and right of the connecting pin.  The method of claim 5, The insulator is a high-voltage wiring connector, characterized in that formed of a rubber material or plastic. A plurality of fluorescent lamps having both ends of the tube arranged in the same direction on the upper part of the apparatus, and having first and second electrodes disposed in both ends of the tube; First and second power lead wires connected to transfer power to first and second electrodes on both sides of the fluorescent lamp; An inverter PCB disposed on one side of the rear surface of the apparatus; First and second transformers for applying a common voltage to the first and second power supply leads of the fluorescent lamp on one surface of the inverter PCB; A plurality of output connectors disposed between the first and second transformers and the first and second power lead wires in a number corresponding to the fluorescent lamps; A first high voltage wiring arranged between the output connector and the first transformer; A second high voltage wiring spaced apart from a portion intersecting the first high voltage wiring; And a connector connecting the spaced apart second high voltage wiring. The method of claim 8, And a first and a second current limiting element are formed between the first and second high voltage wirings, respectively. The method of claim 8, The connector is a backlight unit, characterized in that consisting of connecting pins for connecting both ends of the spaced second high-voltage wiring. 11. The method of claim 10, The connecting pin has a predetermined height at a portion where the first and second high-voltage wiring intersect, and the backlight unit is formed such that the cross section in the longitudinal direction forms a polygon or a circle. 11. The method of claim 10, The connection pin is a backlight unit, characterized in that for connecting by connecting the second high-voltage wiring spaced apart. 11. The method of claim 10, The connector further comprises an insulator surrounding the connecting pins in the top, bottom, left and right. The method of claim 8, The fluorescent lamp is a U-shaped backlight unit, characterized in that.

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