KR19980012821U - High Pressure Leak Detection Device of Cathode Ray Tube - Google Patents

Abstract

The present invention relates to a cathode ray tube high pressure leakage detection device, and more particularly to a cathode ray tube high pressure leakage detection device to automatically detect the high pressure leakage of the cathode ray tube to inform the operator.

According to the present invention, a cathode ray tube 10 is placed on a pallet 2 conveyed by a conveyor 1, and the cathode ray tube 10 and the deflecting device 20 are connected to a pin box 4 and an electrical box 3. In the high-pressure leakage detection device connected to the through to detect the abnormal supply of the high-voltage power supplied by the deflector 20 to the anode cap 15 of the cathode ray tube 10, the anode of the cathode ray tube 10 A current meter 22 for measuring the magnitude of the electron beam current Id by the potential difference between the anode voltage and the cathode voltage supplied to the cap; A controller (24) for outputting a high voltage leakage display signal when the magnitude of the electron beam current from the current meter (22) is out of a standard value of a normal size range; And a display unit 30 for indicating that there is an abnormality in the high pressure supply phase by the high pressure leakage display signal from the control unit 24.

Description

High Pressure Leak Detection Device of Cathode Ray Tube

The present invention relates to a cathode ray tube high pressure leakage detection device, and more particularly to a cathode ray tube high pressure leakage detection device to automatically detect the high pressure leakage of the cathode ray tube to inform the operator.

In general, in the process of producing a cathode ray tube, which is conventionally used as a water tube or a cathode ray tube, a measurement audit process for measuring whether the cathode ray tube is normally operated is involved, and the process of measuring and inspecting the operation of the cathode ray tube is performed. In order to operate the cathode ray tube, the high pressure of 25KV or more is supplied from the high pressure portion of the deflection apparatus to the anode cap of the cathode ray tube through the deflection apparatus. It is to perform a predetermined measurement test on the cathode ray tube.

Improvements and problems with respect to the prior arts to be solved by the present invention in the prior art, such as a high pressure leakage, such as a pin box or an electrical box when an abnormality occurs in the high pressure supply to the anode cap of the cathode ray tube The worker is threatened with a fatal safety accident. In addition, as described above, even in the case of abnormality in the high-pressure supply phase, there is no appropriate means for recognizing the abnormality, so the safety of the worker is unprotected. In addition, when high pressure leaks in this way, accurate measurement inspection of the cathode ray tube becomes impossible.

The present invention has been made to solve the above problems and to achieve an improvement.

Therefore, the object of the present invention is to automatically detect the high-pressure leakage of the cathode ray tube to inform the operator, to enable rapid and accurate work through the immediate abnormal repair and at the same time to prevent the safety accidents due to high-pressure leakage It is to provide a high pressure leakage detection device of the pipe.

The technical problem to be achieved by the present invention is to solve the conventional problems and to achieve an improvement point, and as a technical means for achieving the technical problem, the high-pressure leakage detection device of the cathode ray tube of the present invention is a conveyor (conveyor) A cathode ray tube (CRT) is placed on a pallet conveyed by the cathode, and the cathode ray tube and the deflection device are connected through a pin box and an electric box, and the cathode ray tube In the high pressure leakage detection device for detecting whether the high voltage power supply supplied by the deflecting device to the anode cap of the abnormality, the electron beam current by the potential difference between the anode voltage and the cathode voltage supplied to the anode cap of the cathode ray tube ( An ammeter measuring the magnitude of Id); A controller for outputting a high voltage leakage display signal when the magnitude of the electron beam current from the current meter is outside a standard value within a normal size range; And a display unit for indicating an abnormality in the high pressure supply phase by the high pressure leakage display signal from the control unit.

1 is a block diagram of a cathode ray tube high pressure leakage detection apparatus according to the present invention.

2 is a flowchart for explaining the operational flow of the present invention.

* Description of the symbols for the main parts of the drawings *

10: cathode ray tube 15: anode cap

20: deflection device 22: current measuring instrument

24 control unit 30 display unit

35: buzzer

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the high-pressure leakage detection device of the cathode ray tube according to the present invention.

1 is a configuration of the cathode ray tube high pressure leakage detection apparatus according to the present invention, Figure 2 is a flow chart for explaining the operation flow for the device of the present invention, with reference to Figure 1, the cathode ray tube of the present invention In the high pressure leakage detecting apparatus, a cathode ray tube 10 is placed on a pallet 2 conveyed by a conveyor 1, and the cathode ray tube 10 and the deflector 20 are connected to a pin box 4 and an electrical box ( 3, a high pressure leakage detecting device connected to the anode cap 15 of the cathode ray tube 10 to detect whether or not a high voltage power supply is supplied by the deflecting device 20, wherein the cathode ray tube 10 is connected to the anode cap 15 of the cathode ray tube 10; The current meter 22 for measuring the magnitude of the electron beam current Id by the potential difference between the anode voltage and the cathode voltage supplied to the anode cap of the anode cap, and the magnitude of the electron beam current from the current meter 22 are normal size ranges. High pressure leakage indication Control section 24 for outputting a call; The display unit 30 is configured to indicate that there is an abnormality in the high pressure supply phase by the high pressure leakage display signal from the control unit 24.

Further, a buzzer 35 connected in parallel to the display unit 30 is further configured to be driven by the high voltage leakage display signal of the control unit 24.

Operation according to the device of the present invention configured as described above will be described in detail below based on the accompanying drawings.

Referring to the present invention with reference to FIGS. 1 and 2, the pallet 2 on which the cathode ray tube 10 is placed is conveyed by the conveyor 1 shown in FIG. 1, on the pallet 2. When the cathode ray tube 10 arrives at the measurement position (step 41 in FIG. 2), the pallet 2 is raised to interconnect the signal terminals (step 42 in FIG. 2). By operating the high pressure supply to the cathode ray tube 10 (step 43 in FIG. 2), accordingly the pin box with the anode cap of the cathode ray tube 10 in the high pressure portion of the deflector 20 shown in FIG. Through (4) and the electrical box (3) is supplied with a high pressure, it is possible to perform the desired measurement test in this state.

In the cathode ray tube 10, the electron beam current Id is generated according to the potential difference between the anode voltage and the cathode voltage supplied to the anode cap. The electron beam current generated in this manner is repeatedly measured at a predetermined time interval by the current meter 22. The measurement is performed to the control unit 24.

In this state, when an abnormality such as high pressure leakage occurs during the high voltage supply, the magnitude of the electron beam current is changed by the positional difference between the anode voltage and the cathode voltage of the cathode ray tube 10, and the magnitude of the electron beam current is changed. The control unit 24 of the deflecting device 20 determines whether it is out of the normal standard value range, and if the result of the determination is that the magnitude of the electron beam current is out of the normal size range, the control unit 24 causes the high pressure leakage. Output the display signal.

By the high pressure leakage display signal output from the control unit 24, the display unit 30 indicates that there is an abnormality in the high pressure supply state due to leakage of high pressure, and the buzzer 35 also sounds, so that an operator may It will be easy to see (steps 44 to 47 of FIG. 2).

According to the present invention as described above, by automatically detecting the high pressure leakage of the cathode ray tube to inform the operator, it is possible to prompt and accurate work progress through immediate abnormal repair and to prevent safety accidents due to high pressure leakage. It has a special effect.

The above description is only a description of an embodiment of the present invention, and the present invention is capable of various changes and modifications within the scope of its configuration.

Claims (2)

The cathode ray tube 10 is placed on the pallet 2 conveyed by the conveyor 1, and the cathode ray tube 10 and the deflection apparatus 20 are connected through the pin box 4 and the electrical box 3. In the high-pressure leakage detection device for detecting whether the high-voltage power supply abnormality supplied by the deflecting device 20 to the anode cap 15 of the cathode ray tube 10, A current meter 22 for measuring the magnitude of the electron beam current Id by the potential difference between the anode voltage and the cathode voltage supplied to the anode cap of the cathode ray tube 10; A controller (24) for outputting a high voltage leakage display signal when the magnitude of the electron beam current from the current meter (22) is out of a standard value of a normal size range; And And a display unit (30) indicating that there is an abnormality in the high pressure supply by the high pressure leakage display signal from the control unit (24). The cathode ray tube high pressure leakage detecting apparatus according to claim 1, further comprising a buzzer (35) connected in parallel to the display unit (30) to be driven by the high pressure leakage display signal of the control unit (24).