KR0125571Y1 - Impurity removing device of cathode ray tube - Google Patents

Abstract

In order to prevent the debris removal defect and the internal pressure of the electron gun E, which are caused by removing the foreign substances by blowing high pressure air through the electron gun foreign substance removal device for the cathode ray tube, the rotary table on which the electron gun E is seated The suction and discharge nozzles 2 and 3 are positioned between the electrodes at 50, and one side of the air blows out the high pressure air, and the other side is configured to suck the air again so that foreign matter between the electrodes of the electron gun E can be easily removed. Will be.

Description

Foreign substance removal device of electron gun for cathode ray tube

Figure 1 is a state diagram showing the electron gun foreign matter removal apparatus for cathode ray tube according to the present invention.

2 is a cross-sectional view of FIG.

3 is a plan view of FIG.

Figure 4 is a schematic diagram showing an electron gun foreign matter removal apparatus for a conventional cathode ray tube.

* Explanation of symbols for main parts of the drawings

1: seating part 2: suction nozzle

3: tozzle nozzle 4: vertical part

5: impeller 6: motor

7: belt 8: filter

The present invention relates to a foreign material removal device of the electron gun for the cathode ray tube, and more particularly to an electron gun foreign matter removal device for the cathode ray tube that can more efficiently remove the foreign matter flowing between each electrode of the electron gun.

In general, a cathode ray tube selects an electron beam and collides with phosphors sequentially arranged at a predetermined interval to emit phosphors at a predetermined position to reproduce a predetermined image.

Here, the cathode ray tube is a panel to which the phosphor is applied and the shadow mask which is an electron beam selection means and an inner shield are coupled, and the panel is coupled to the panel and the deflection yoke is attached to the outer periphery, and the channel is coupled to the channel. In addition, it consists of a neck into which an electron gun is inserted in the inner circumference.

An anode button for applying a high pressure of about 25 KV to the electron gun is attached to the outer periphery of the channel, and a built-in graphite film for transferring the anode potential applied from the anode button to the electron gun is coated inside the channel.

Of course, in order to smooth the ripple component of the above-described anode potential, an outer graphite film is coated on the outer circumference of the channel.

As described above, in the cathode ray tube, the electron beam radiated from the electron gun is deflected to the front surface of the panel by the deflection yoke, and the fluorescent tube is selected by a shadow mask and strikes a predetermined phosphor coated in a dot or stripe pattern on the panel. It emits light and displays a predetermined image.

Here, since the electron gun is arranged with a plurality of electrodes at intervals of about several millimeters, when the insulation between the electrodes is not perfect, a short is generated between the electrodes, thereby causing an electron gun failure.

Therefore, as shown in FIG. 4, a plurality of electron guns seated at a predetermined interval on the rotary table 50 and the rotary table 50 as shown in FIG. The foreign matter removal apparatus comprised of (E) and the high pressure nozzle 51 provided in one side of the said rotating table 50 was used.

Referring to the operation of the debris removal device described above, the electron gun E is seated on the rotary table 50 to blow air through the high-pressure nozzle 51 to separate the debris attached to the electron gun E.

Of course, the rotation table 50 is intermittently rotated to put the electron gun E into the process one by one.

However, since the foreign matter removing apparatus having the above-described configuration removes the foreign matter by blowing air through the electron gun E, the foreign substances located between the electrodes of several mm intervals are not removed so that the internal pressure failure of the electron gun occurs. There is this.

Accordingly, an object of the present invention is to remove foreign substances of the electron gun for the cathode ray tube, which can prevent the foreign matter removal defect and the pressure resistance of the electron gun caused by removing the foreign matter by blowing high-pressure air through the electron gun in the foreign substance removal device. In providing.

In order to realize the above object, the present invention is provided with a suction and discharge nozzle between each electrode on the rotary table on which the electron gun is seated, and on one side, a high-pressure air is blown out and one side is equipped with an electron gun debris removal device configured to suck it again. It is characterized by the configuration.

Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings.

1 is a state diagram showing a foreign matter removal device of the electron gun for the cathode ray tube according to the present invention, the rotatable table 50, the rotatable table 50 is formed as well as the seating to which the electron gun (E) is seated A part 1, a vertical part 4 having a plurality of suction discharge nozzles 2 and 3 formed on both sides of the electron gun E, and a vertical part 4 on both sides described above, It consists of suction means, such as the impeller 5 which suction-discharges air.

In addition, the suction and discharge nozzles 2 and 3 are formed so as to be positioned between the electrodes, and the seating part 1 is installed on the rotary table 50 and the motor 6 and the belt ( It becomes rotatable by the rotating means comprised by 7).

Here, the impeller (5) is formed in the vertical portion (4) formed with a plurality of suction, discharge nozzles (2, 3), as shown in Figure 2, and the lower central portion of the vertical portion (4) In addition, both sides are provided with a filter (8) for filtering the foreign matter to be sucked, discharged to filter the foreign matter during the suction, discharge.

In particular, as described above, air is sucked in the direction in which the impeller 5 rotates, and air is discharged in the opposite direction, in which air is sucked and discharged from both sides of the electron gun (not shown). .

Referring to the operation of the foreign material removing device having the configuration as described above, as shown in FIG. 3, the vertical portion 4 and the electron gun E rotated at the center with the vertical portion 4 at both sides are impellers ( By the rotation of 5) one side is discharged air is injected, one side is to suck this air.

At this time, the suction and discharge nozzles 2 and 3 are located between the electrodes of the electron gun E shown in FIG. 1, so that foreign matter can be easily shaken off between the electrodes spaced several mm apart.

In particular, the foreign matter separated from the electron gun E by the discharge air is sucked back into the vertical portion 4 by the intake air, and the sucked foreign matter is filtered by the filter 8 so that the foreign matter does not flow out into the workplace. This is kept clean.

As described above, the present invention is advantageous in that a plurality of suction and discharge nozzles are formed in the vertical part so as to be positioned between each electrode of the electron gun, and foreign substances are removed efficiently between the electrodes by suction and discharge of high pressure air with an impeller.

Claims (2)

In the foreign material removal apparatus of the electron beam gun for cathode ray tubes which consists of the rotary table 50 intermittently rotated and the high pressure nozzle 51 provided in one side of the said rotary table 50, it rotates by said rotating means to the said rotary table 50 by a rotating means. It is possible to install and the seating unit 1 on which the electron gun E is seated, and the seating unit 1 is installed on both sides of the seating unit 1, and a plurality of discharge and suction nozzles 2 and 3 are provided on the electron gun E. A vertical portion 4 formed to be positioned between the electrodes, a suction means installed in the middle of the vertical portions 4 on both sides, and suctioning and discharging high-pressure air, and a filter 8 provided on both sides of the suction means. Electron gun foreign matter removal device for cathode ray tube, characterized in that the configuration. 2. The electron gun foreign matter removal device for cathode ray tube according to claim 1, wherein the suction means is configured using an impeller (5).