KR100876845B1 - Fluorescent Lamp Manufacturing Equipment for CCFL - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a fluorescent lamp for CCFL, and more particularly, when the inside of the glass tube is made in a vacuum state during the manufacturing process of the fluorescent lamp for CCFL, the vacuum time can be extended to maximize the process completion time. It relates to a fluorescent lamp manufacturing apparatus for CCFL.

That is, the present invention is a gas installed in a plurality of transmission holes radially formed in the upper and lower plates, the lower and the lower plate that is rotatable and liftable, the lower plate is supported by the upper and lower ends of the plurality of glass tubes arranged radially Rotating plate for delivering gas to the glass tube through a delivery line, a fixed plate is provided with a gas supply line for supplying gas to a plurality of supply holes in close contact with the lower portion of the rotating plate and formed to communicate with the delivery hole In the CCFL fluorescent lamp manufacturing apparatus, the internal area of the delivery hole relates to a fluorescent lamp manufacturing apparatus for CCFL, characterized in that larger than the internal area of the supply hole so that the amount of gas supplied to the glass tube is increased.

CCFL fluorescent lamp manufacturing equipment, glass tube, vacuum, transmission hole, supply hole

Description

Fluorescent lamp manufacturing apparatus for CFCs {APPARATUS FOR MANUFACTURING COLD CATHODE FLUORESCENT LAMP}

1 is a schematic cross-sectional view showing the structure of a cold cathode fluorescent lamp.

2A to 2C are process diagrams illustrating a sealing and sealing process of a cold cathode fluorescent lamp.

Figure 3 is a side view showing a conventional fluorescent lamp manufacturing apparatus for CCFL.

4A and 4B are plan views illustrating a rotating plate and a fixing plate provided in the gas delivery line of the CCFL fluorescent lamp manufacturing apparatus.

5A to 5C are partially enlarged views illustrating a state in which the rotating plate is rotated on the fixed plate.

6A and 6B are plan views illustrating a rotating plate and a fixing plate provided during a gas delivery line of a fluorescent lamp manufacturing apparatus for CCFL according to an embodiment of the present invention.

7A to 7D are partially enlarged views illustrating a state in which the rotating plate is rotated on the fixed plate.

<Description of Symbols for Main Parts of Drawings>

132: rotating plate 134: transfer hole

136: fixing plate 138: supply hole

The present invention relates to an apparatus for manufacturing a fluorescent lamp for CCFL, and more particularly, when the inside of the glass tube is made in a vacuum state during the manufacturing process of the fluorescent lamp for CCFL, the vacuum time can be extended to maximize the process completion time. It relates to a fluorescent lamp manufacturing apparatus for CCFL.

In general, liquid crystal display (LCD) devices that are spotlighted in flat panel display devices include a backlight device that provides a separate light source because they are non-light emitting devices that do not emit light by themselves.

The general requirements of such a backlight are high brightness, high efficiency, uniformity of brightness, long life, thinness, low weight, and low cost. In the case of notebook PCs, high efficiency long life lamps are required to reduce power consumption, and backlights for monitors and TVs require high brightness.

As the backlight, a cold cathode fluorescent lamp (CCFL) is disposed and a phosphor has been conventionally used. The CCFL is classified into an edge light using a light guide plate and a direct light arranged in a plane according to the arrangement of the light source on the display surface.

Here, the general structure of the cold cathode fluorescent lamp 10, as shown in Figure 1, is provided with two electrodes, the long glass tube 11 and the anode 12 and the cathode 13 attached to both ends thereof, Two electrodes are connected to each other by a lead 16 formed at both ends of the glass tube 11. In addition, a fluorescent substance 14 is coated on the inner wall of the glass tube 11, and a mixed gas such as mercury, argon, and neon is filled in the inner space 15 of the glass tube.

First, the CCFL fluorescent lamp manufacturing apparatus is composed of a bead (Bead) process, a sealing (Sealing) process, a seal-cutting (Seal-cutting) process, and manufactures a fluorescent lamp by such a various process.

Meanwhile, in the manufacturing process of the cold cathode fluorescent lamp 10, as shown in FIG. 3A, a bead process is performed to form beads 17 in the lead 16 of the electrode 12 inserted into the lamp. do.

Next, as shown in FIG. 3B, a sealing process of removing air in the glass tube 11, filling the gas, and sealing the gas is performed. In this process, the beads 17 are first inserted into one side of the glass tube 11, and a portion of the glass tube 11, that is, the outer circumferential surface of the glass tube 11 on which the beads 17 are positioned, is photographed to make the beads 17. Fix it. In addition, a portion of the outside of the end of the bead 17 is taken to form a space into which a mercury getter (H) is introduced.

Next, after the glass tube 11 is inverted, the beads 17 are inserted into the opposite sides and heated to completely seal the glass tube 11.

Thereafter, after completing another process such as filling the gas into the glass tube 11, the fluorescent lamp is inverted and a seal cutting process is performed as shown in FIG. 3C. In this process, the cutting part is heated with a torch (T: torch) and then the cutting part is cut using a cutting wheel (W). Then, the glazing process is performed to reheat the cut portion to form a smooth curved surface.

Here, the CCFL fluorescent lamp 10 performs the process of forming the internal electrodes 12 and 13 on the electrodeless glass tube 11, and then arranges the CCFL fluorescent lamp 10 so as to overlap each other. It is connected and driven by the connection method.

However, the conventional CCFL fluorescent lamp manufacturing apparatus as shown in Figure 3, the upper plate 20, the lower plate 22 provided below the upper plate 20, and the upper and lower plates 20, 22 is provided in the central portion of the lower surface of the lower plate 22, which is disposed in the opposite center of the rotating shaft 28, the lower side of the rotating shaft 28 to drive the upper and lower plates (20, 22) It consists of the fixed shaft 30 provided with (not shown in figure).

Here, the inside of the rotating shaft 28 to supply a reducing gas to the gas supply device (G) to the glass tube in order to prevent the oxidation of the internal electrodes (12, 13) provided in each of the glass tube 40, the inside of the vacuum state Gas delivery line (L) is connected to the upper glass tube fixing part 24 for fixing the glass tube 40 in a vacuum pump (not shown in the figure) to make it.

The upper glass tube fixing portion 24 and the lower glass tube fixing portion are supported at the edge of the upper plate 20 and the edge of the lower plate 22 so as to support the upper and lower ends of the glass tube 40 by the number of fluorescent lamps to be manufactured. 26 is provided radially.

As a result, the sealing process is performed with the upper and lower ends of the glass tube 40 supported on the upper and lower glass tube fixing parts 22 and 24.

Here, a gas delivery line (L) is provided inside the rotating shaft (28) and the fixed shaft (30), the gas delivery line (L) in the state in which the rotating plate 32 and the fixed plate 36 in contact with The fixed plate 30 is provided inside the fixed shaft 30, and the rotating plate 32 rotating at the same rotational speed as the upper and lower plates 20 and 22 while the fixing plate 36 is fixed. It is rotated in contact with and connects or closes the gas delivery line (L).

 As shown in FIGS. 4A and 4B, the rotating plate 32 is provided with a transfer hole 34 radially penetrated by the number of the glass tubes 40, and the fixing plate 36 also includes the rotating plate ( 32 is provided with a supply hole 38 penetrating through the same vertical line as the transmission hole 34 of the 32.

Here, the transfer hole 34 and the adjacent transfer hole 34 are spaced apart by a distance (a) on a symmetrical horizontal line, and the supply hole 38 and the adjacent supply hole 38 are also symmetrical on a horizontal line ( spaced by b).

Meanwhile, as shown in FIGS. 5A to 5C, a gas supply apparatus is driven or the glass tube 40 is supplied to supply a reducing gas into the glass tube 40 in the process of performing various processes on the glass tube 40. In order to make the interior of the vacuum state, the vacuum pump must be driven to supply the reducing gas to the glass tube 40 through the gas supply line L connected to the gas supply device or the vacuum pump or to intake the air inside the glass tube 40. do.

At this time, the center of the supply hole 38 of the fixed plate 36 and the center of the transfer hole 34 of the first rotating plate 32 are provided on a vertical line when the glass tube 40 is idle. ) Rotates gradually, the transfer hole 34 in the supply hole 38 is shifted by about half, but the half is connected, so the supply of reducing gas is maintained, and when the rotating plate 32 is further rotated, the supply hole The 38 and the delivery hole 34 do not coincide with each other, and the delivery hole 34 is located at a distance a between the adjacent supply holes 38 so that the supply of reducing gas is cut off or the vacuum state is temporarily stopped. .

As a result, the supply of reducing gas into the glass tube 40 and the maintenance of the vacuum state inside the glass tube 40 are not smooth, and thus the process completion time of the fluorescent lamp is increased.

The present invention has been made to solve the above problems, the object is to increase the amount of reducing gas injection into the glass tube or increase the time to maintain the vacuum state of the glass tube can be shortened the process completion time The present invention provides a fluorescent lamp manufacturing apparatus for CCFL.

In order to achieve the above object, the present invention, the upper and lower plates rotatable and liftable in a state of supporting the plurality of radially arranged glass tube top and bottom, installed in the lower portion of the lower plate and interlocked rotationally formed a plurality of Rotating plate for delivering gas to the glass tube through a gas delivery line installed in the delivery hole of the gas supply line for supplying gas to the plurality of supply holes in close contact with the lower portion of the rotating plate and formed to communicate with the delivery hole In the CCFL fluorescent lamp manufacturing apparatus having a fixed plate is installed, the inner area of the delivery hole is formed to be larger than the inner area of the supply hole so that the amount of gas supplied to the glass tube is increased, reducing gas to the glass tube The process time is reduced by increasing the supply when supplying , To supply holes and therefore achieved by appropriate connection of the time of passing holes of the rotating plate and the stationary plate continue to maintain the vacuum state of the glass tube is preferred because the time it takes when the gas injection speed within the glass tube.

Hereinafter, an embodiment of the fluorescent lamp manufacturing apparatus for CCFL of the present invention will be described with reference to the accompanying drawings.

CCFL fluorescent lamp manufacturing apparatus according to an embodiment of the present invention, although not shown in the drawing, a bead process for performing a bead (Bead) process, a sealing process for performing a sealing (Sealing), sealing (Seal- It consists of a thread cutting process that performs cutting.

Here, the sealing process and the seal cutting process is to seal and seal by rotating the glass tube (not shown in the drawing), respectively, so that each process machine should be performed with the top or both ends of the glass tube supported.

Such a sealing process and a sealing cutting process are further provided with a loading unit (not shown in the drawing) and an unloading unit (not shown in the drawing) for carrying in and carrying out the glass tube into the process unit.

In addition, the sealing process and the sealing cutting process, respectively, the upper and lower glass tube fixing portion (not shown in the drawing) for fixing the glass tube in the sealing process and the sealing cutting process is provided for each of a plurality of positions.

Here, the upper and lower plates and the upper and lower glass tube fixing portion, the rotating shaft, the fixed shaft, the glass tube, the gas delivery line, the gas supply device, and the vacuum pump have the same structure and function as those of the related art, and thus, detailed description thereof will be omitted.

As shown in FIGS. 6A and 6B, the rotating plate 132 is provided with a transfer hole 134 which is formed in a disc shape and penetrates as many as the number of glass tubes is provided at the edge thereof. In addition, the transfer hole 134 has an upper end formed in a cylindrical shape having the same diameter as the gas delivery line L, and a lower end formed in an elliptical shape extending in the longitudinal direction than the upper end diameter.

Here, as the inner area of the delivery hole 134 is large, the amount of reducing gas filled therein is also increased to supply a large amount of reducing gas to the glass tube.

The fixing plate 136 has a disc shape and is provided with a supply hole 138 formed through the number of glass tubes at the edge. The diameter of the supply hole 138 is formed in the same cylindrical shape as the gas delivery line (L).

Here, the lower ends of the adjacent transfer holes 134 are formed to be spaced apart by a distance a 'on the horizontal line symmetrical to each other, and the lower ends of the adjacent supply holes 138 are also symmetric to each other by the distance b' on the horizontal line. It is formed to be spaced apart, the distance (a ') of the adjacent transfer hole 136 is longer than the diameter of the supply hole (138).

And the transfer hole 134 is formed at the lower end of the curvature of the appropriate radius. This is because when the transfer hole 134 is formed in a straight shape, the transfer hole 134 and the supply hole 138 partially overlap when the transfer hole 134 rotates along the supply hole 138. This is because 138 moves along the curved short side width of the transfer hole 134 and does not overlap.

Therefore, the process of maintaining the vacuum state inside the glass tube when performing the various processes in the CCFL fluorescent lamp manufacturing apparatus of the present invention to drive the gas supply device as shown in Figure 7a to 7d to transfer the gas from the gas supply device Supplying the reducing gas to the inside of the glass tube through the line (L) or, if necessary, by driving a vacuum pump connected to the gas delivery line (L) to the internal air of the glass tube through the gas delivery line (L) connected to the vacuum pump You have to intake.

At this time, the center of the supply hole 138 of the fixing plate 136 and the center of the transmission hole 134 of the rotating plate 132 is provided on a vertical line when the glass tube is idle, and gradually rotates when the rotating plate 132 is rotated. In the supply hole 138, the upper end of the transfer hole 134 starts to shift, but the lower end of the transfer hole 134 extends in the longitudinal direction, so that the supply hole 138 does not completely overlap the lower end of the transfer hole 134. The transfer hole 134 and the supply hole 138 are connected to each other.

Thereafter, when the rotation plate 132 is further rotated so that the supply hole 138 of the fixing plate 136 is positioned between the distance a 'between neighboring transmission holes 134 of the rotation plate 132, the gas is rotated. The delivery line (L) is not in communication but because the distance (a ') of the adjacent delivery hole 134 is not long, the delivery hole 134 and the supply hole 138 is directly connected to supply the reducing gas inside the glass tube in a short time. In addition to being able to maintain the vacuum state inside the glass tube for a long time depending on the situation.

Such a fluorescent lamp manufacturing apparatus for CCFL of the present invention is provided on the rotating plate in the rotating plate and the fixed plate in the middle of the gas delivery line is provided to supply a reducing gas into the glass tube or to make the inside of the glass tube in a vacuum state As the area of the delivery hole is made larger than the area of the supply hole of the fixed plate, a large amount of reducing gas is filled in the delivery hole, thereby rapidly supplying a large amount of reducing gas to the glass tube, and increasing the vacuum holding time of the glass tube. This has the effect of reducing the completion time.

Claims (3)

The upper and lower plates rotatable and liftable in a state of supporting a plurality of radially arranged glass tube top and bottom, and through the gas delivery line installed in a plurality of radially formed transmission holes interlocked and installed in the lower portion of the lower plate CCFL fluorescent lamp equipped with a rotating plate for delivering gas to the glass tube, a fixing plate is installed in close contact with the lower portion of the rotating plate and a gas supply line for supplying gas to a plurality of supply holes formed to communicate with the delivery hole In the manufacturing apparatus, And an inner area of the delivery hole is larger than an inner area of the supply hole so that the amount of gas supplied to the glass tube is increased. The method of claim 1, The inlet side of the delivery hole in contact with the fixing plate is elliptical, the outlet side of the delivery hole in which the gas delivery line is installed is a CCFL fluorescent lamp manufacturing apparatus. The method of claim 1, CCFL fluorescent lamp manufacturing apparatus characterized in that the inlet side of the transfer hole is formed to have a curvature.

Images