KR930006433Y1 - Gas excluding apparatus of crt - Google Patents

Abstract

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Description

Gas removal device inside cathode ray tube

1 is a cross-sectional view showing a conventional cathode ray and a gas removing device therein.

2 is a view showing a gas removal device inside a cathode ray tube according to the present invention, a is a cross-sectional view, b is a perspective view showing an inlet pipe shown in a a view.

* Explanation of symbols for main parts of the drawings

21: inlet tube 21a: inlet

The present invention relates to a degassing apparatus inside a cathode ray tube, and more particularly, to an improved inlet tube for blowing hot air into the cathode ray and the inside to facilitate gas discharge.

In general, the manufacture of cathode ray tubes is to form a fluorescent film on the inner surface of the panel and to deposit an aluminum film in order to increase the reflection efficiency of the fluorescent material, the fluorescent film can not directly form the aluminum film due to the hole hole hole hole Deposition causes aluminum to penetrate the phosphor and reduce the reflective effect of the phosphor. Therefore, in order to prevent this phenomenon, the film is first coated with a filming solution, and then an aluminum film is deposited. In this state, the panel (Pannel), which has completed the assembly of parts such as the shadow mask and the supporting body, and the funnel, in which the graphite film is applied, are sealed by the frit to seal the bulb of a single body. Is achieved. At this time, the panel and the rod is placed on the frame to be sealed and then introduced into the hot hot stove by a conveyor to be heated. When the temperature in the hot stove reaches 400 ° C. or more, the blooming solution is evaporated. Gas is generated inside the funnel, and the gas removal apparatus 10 inside the conventional cathode ray tube for discharging the gas outwards is provided with a panel 12 and a funnel 13 encapsulated as shown in FIG. And a cylindrical inlet pipe 11 having an outer diameter smaller than its inner diameter is installed and fixed to the neck portion 13a of the funnel 13, which is formed so that one end thereof is throttled and the neck portion 13a is formed on the other outer circumferential surface thereof. A plurality of fixing pieces 11b fixed to the above are formed. In the figure, reference numeral 11a denotes an inflow portion, and 15 denotes a space portion.

The degassing apparatus 10 in the conventional cathode ray tube configured as described above has a hot hot air in a hot stove (not shown in the drawing) into the panel 12 and the funnel 13 through the inflow section 11. It is introduced and discharged through the space 15 provided between the neck portion 13a and the hydraulic pipe 11 together with the gas present in the panel 12 and the funnel 13. However, since the inlet of the conventional cathode ray and the internal gas removal device is narrow, the inlet of the inlet pipe into which the hot air flows is narrow, so the amount of the hot air introduced is small so that the gas existing in the panel and the funnel cannot be completely removed. There is a problem that the production efficiency is reduced.

Therefore, the present invention has been made to solve the above problems effectively, to provide a gas removal device inside the cathode ray tube that can easily discharge the gas present in the interior of the panel and funnel to improve the product production efficiency. There is a purpose.

In order to achieve the above object, the present invention provides a gas removal apparatus inside a cathode ray tube in which a panel and a funnel are mounted on a sealing mount and an inlet pipe is installed in the neck of the funnel to inject hot air into the panel and the funnel. The inlet of the inlet pipe is formed in a trumpet shape, characterized in that a large amount of hot air inflow is possible.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the gas removing device 20 inside the cathode ray tube of the present invention has a panel and a funnel mounted on a sealing mount 24, and one end thereof is throttled on the neck portion 23a of the funnel 23. It is formed so that the other end is provided with an inlet pipe 21 is formed with a trumpet-shaped inlet portion 21a is expanded, which is fixed to one side of the sealing mount 24. In the drawing, reference numeral 25 denotes a space part.

As described above, the gas removal device 20 inside the cathode ray tube constructed as described above has hot air in a hot blast furnace (not shown in the drawing) of the panel 22 and the funnel 23 through the inlet duct 21. Into the inside of the panel 2 and the funnel 23 through the space 25 provided between the neck portion 23a and the inlet pipe 21 to be introduced into the interior and the gas present therein. do. At this time, the inlet pipe 21 is formed in the shape of a trumpet inlet 21a is a large amount of hot air is introduced to easily discharge the gas present in the panel 22 and the funnel 23.

According to the present invention, since a large amount of hot air is introduced as compared to the prior art, it is easy to discharge the gas existing inside the panel and the funnel, and it is a practical and useful design with improved product production efficiency.

Claims (1)

In the cathode and the gas removing apparatus inside the panel and the funnel is mounted on the sealing mount and the inlet pipe is installed in the neck of the funnel to inject hot air into the panel and the funnel, the inlet 21a of the inlet pipe 21 The gas removal device inside the cathode ray tube, characterized in that formed in a trumpet shape to allow a large amount of hot air inflow.