JPH07211234A - Bulb holder for cathode ray tube - Google Patents

Abstract

PURPOSE:To simultaneously carry out panel baking and frit baking by sealing a bulb after supplying oxygen to the bulb composed of a panel and a funnel alingned by respective supporting and adjusting parts. CONSTITUTION:A neck cover 1 which can close an open part of a bulb neck flare 7 is fixed in one end of a lever 2 supported by a fulcrum pin 3 and a weight 4 is attached to the other end. The cover 1 can swing on a spherical supporting body 23 included in a pressing part 22 formed in the cover 1. Due to the moment of rotation by the weight of the weight 4, the neck flare 7 is pressed by the cover 1 and the open part of the flare is closed. After oxygen is supplied to the inside of the bulb by any various method, the bulb is baked in the condition that the cover 1 is shut. The weight 4 may be moved up and down by using an air cylinder and furthermore air may be supplied to the neck flare 7 through an oxygen introducing pipe attached to a slide block installed in another air cylinder.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a bulb holder for a cathode ray tube.

[0002]

2. Description of the Related Art An envelope (bulb) of a color cathode ray tube comprises a so-called panel and a funnel, which are welded together via frit glass.

This welding is carried out in a heating furnace (this step is hereinafter referred to as frit baking). At this time, positioning and fixing of the panel with respect to the funnel is performed by a cathode ray tube valve holder, and this cathode ray tube valve holder. All of them are arranged in the heating furnace.

A conventional cathode ray tube bulb holder is shown in FIG.
As shown in FIG. 3, there is a frit holder base 6, and a neck support 5 and a funnel reference part support 9 are supported by the frit holder base 6. The panel 11 is positioned with respect to the funnel 10 by a funnel reference point support tool 12 and a panel reference point support tool 13.

[0005]

However, a heat treatment called a so-called panel bake is performed on the panel in a step prior to the frit bake.

That is, a phosphor is applied to the inner wall surface of the panel to form a display surface. Since the light emitted from this phosphor is applied only to the outside of the panel, a resin film is provided on the phosphor surface. For example, a reflective film made of a metal film is formed. The reason for forming the resin film is to form the reflective film uniformly without unevenness even though the phosphor surface has unevenness. Therefore, after forming the reflective film, the resin film is no longer necessary, and is baked so that it disappears.

Therefore, in order to simplify the work, it has been proposed that the panel bake is performed in the same process as the frit bake, but it is necessary to bake the panel in a state where the phosphor surface side is closed by the funnel. Therefore, it was pointed out that the problem was that the supply of oxygen was not sufficient and the baking could not be performed sufficiently.

Therefore, the present invention has been made under such circumstances, and an object of the present invention is to provide a bulb holder for a cathode ray tube capable of simultaneously performing panel baking and frit baking.

[0009]

In order to achieve such an object, the cathode-ray tube valve holder according to the present invention comprises:
It consists of the following means.

[Means 1] In a cathode-ray tube valve holder including at least a panel alignment support adjustment unit and a funnel alignment support adjustment unit, the panel aligned by the panel alignment support adjustment unit and the funnel alignment support adjustment unit are aligned. An opening / closing mechanism for a lid is provided for sealing the valve after supplying oxygen into the valve composed of a funnel.

[Means 2] In a cathode-ray tube valve holder including at least a panel alignment support adjustment section and a funnel alignment support adjustment section, the panel aligned by the panel alignment support adjustment section and the funnel alignment support adjustment section are aligned. An oxygen supply means for supplying oxygen into a valve constituted by a funnel and an opening / closing mechanism of a lid for sealing the valve after oxygen is supplied by the oxygen supply means are provided.

[0012]

According to the above-mentioned means 1, the lid opening / closing mechanism for closing the valve constituted by the panel aligned by the panel alignment support adjusting section and the funnel aligned by the funnel alignment support adjusting section is provided. Therefore, after supplying oxygen to the valve, it becomes possible to keep the valve filled with oxygen by the lid opening / closing mechanism.

Therefore, when frit baking is performed, at the same time, sufficient panel baking can be performed by the oxygen filled in the valve.

Further, according to the means 2, an oxygen supply means is further provided. Therefore, not only the effect of the means 1 can be obtained, but also the oxygen necessary for the panel baking can be easily supplied into the valve, and the work efficiency can be achieved.

[0015]

EXAMPLES Example 1. FIG. 1 is a perspective view showing an embodiment of a bulb holder for a cathode ray tube according to the present invention.

In the figure, the panel 11 and the funnel 10 are shown.
And are positioned and supported by the cathode ray tube bulb holder.

Here, the funnel 10 is provided with a neck tube 8, and an end portion of the neck tube 8 is formed with a flared neck flare 7.

The CRT bulb holder has a frit holder base 6, and a neck support 5 and a funnel reference portion support 9 supported by the frit holder base 6.

Further, the panel 11 in the funnel 10
In the vicinity of, the three funnel reference point supports 12 are provided, two of them are arranged so as to abut on the long side of the funnel 10, and the remaining one is the funnel 1.
It is arranged so as to contact the short side of 0.

Further, the funnel 1 in the panel 11
In the vicinity of 0, three panel reference point supports 13 are provided, two of which are arranged so as to abut on the long side of the panel 11, and the remaining one is the short side of the panel 11. It is arranged so as to abut on the side.

The funnel reference point supports 12 and the panel reference point supports 13 are provided in pairs on the same base, one by one, so that the panel 11 can be accurately positioned with respect to the funnel 10. You can do it.

In this embodiment, in particular, there is the neck lid 1 which can close the opening of the valve neck flare 7.
The neck lid 1 is fixed to one end of a lever 2 supported by a fulcrum pin 3, and a weight 4 is attached to the other end of the lever 2.

That is, the neck lid 1 is configured to constantly press the neck flare 7 by the rotational moment force due to the weight of the weight 4, whereby the neck lid 1 closes the opening of the neck flare 7. There is.

FIG. 2 is a partial cross-sectional view showing the details of the connecting portion between the neck lid 1 and the lever 2, and the holding portion 22 including the spherical support 23 provided on the lever 2 is provided on the neck lid 1 side. It is provided. As a result, the neck lid 1 can be swung (pivoted) about the spherical support 23, so that the neck lid 1 can follow and adhere to the entire opening surface of the neck flare 7 having variations in shape and the like. It is like this.

On the surface of the neck lid 1 on the side of the neck flare 7, for example, a ceramic material 20 having no gas permeation is formed, so that it is possible to have heat damage and heat resistance.

The cathode-ray tube valve holder having the above-described structure simultaneously supplies oxygen to the inside of the valve by various methods, and frit-bakes it in a furnace (not shown) with the neck lid 1 closed, thereby simultaneously performing the panel. You will also be able to bake.

Example 2. FIG. 3 is a perspective view showing another embodiment of the bulb holder for a cathode ray tube according to the present invention. In the figure, the same reference numerals as those in FIG. 1 have the same functions. In particular, an automatic opening / closing mechanism for the neck lid 1 and an oxygen injection mechanism are provided in the configuration of FIG.

There is an air cylinder 37 that can be operated remotely, and the vertical slide block 32 attached to the air cylinder piston rod 36 can move vertically along a slide rail 34.

The air cylinder piston rod 36 which moves up and down in this way is designed such that the weight 4 is moved up and down at the tip thereof, and accordingly, the neck lid 1 can be opened and closed with respect to the neck flare 7. There is.

Further, there is an air cylinder 371, and a slide block 321 which moves up and down along a slide rail 341 is attached to the tip of the air cylinder piston rod.

An oxygen introducing pipe 31 is attached to the slide block 321, and the oxygen introducing pipe 3 is attached.
An oxygen injection part 30 is attached to the tip of the device 1.

FIG. 4 shows the neck flare 7 of the oxygen injection part 30.
It is sectional drawing which showed the mounting state with respect to.

There is a lid 40 that can be in close contact with the neck flare 7, and this lid 40 is made of rubber or resin, for example. The back surface of the lid 40 contains a spherical body 50 formed at the tip of the nozzle 45.
As a result, the lid 40 is structured so that it can swing around the nozzle 45.

The lid 40 has a spring 3 provided between it and a spring receiver 44 provided on the nozzle 45 side.
9 is constantly pressed by this, so that the lid 40
The close contact with the neck flare 7 is perfected.

In this case, the air in the valve is discharged from the boundary between the funnel 10 and the panel 11 as oxygen is supplied.

That is, FIG. 7 is an explanatory view showing this state, in which the surface of the frit glass 14 applied to the sealing surface of the funnel 10 has some irregularities, and a gap is formed between the sealing surface of the panel 11 and the surface. Therefore, this gap is used as an air outlet.

Example 3. FIG. 5 is a perspective view showing another embodiment of the bulb holder for a cathode ray tube according to the present invention. In the figure, the same reference numerals as those in FIG. 3 have the same functions.

In the figure, the configuration different from that of FIG. 3 is a state in which the oxygen injection portion is attached to the neck flare 7.

As shown in FIG. 5, the oxygen introducing pipe 31 is deeply inserted into the neck pipe 8 of the valve, and there is no particular lid for closing the neck flare 7.

In this case, since the air in the valve can be discharged from the neck 8 with the supply of oxygen, the oxygen can be easily supplied.

Example 4. FIG. 6 shows another embodiment of the bulb holder for a cathode-ray tube according to the present invention, and is an explanatory view showing a state in which the oxygen injection portion is attached to the neck flare 7, in particular.

A lid 40 for closing the neck flare 7 is provided at the tip of a nozzle 45 for injecting oxygen, and the lid 40 is provided with an exhaust hole 48 for exhausting air in the valve.

Further, the lid 40 has a spring 3 arranged between it and a spring receiver 44 provided on the nozzle 45 side.
9 allows the neck flare 7 side to be constantly pressed.

With this structure, the air in the valve can be discharged along with the oxygen supply, so that the oxygen can be easily supplied.

According to the bulb holder for the cathode ray tube shown in FIG. 1, the lid opening / closing mechanism for closing the valve constituted by the panel aligned by the panel alignment support adjustment section and the funnel aligned by the funnel alignment support adjustment section is provided. Since it is provided, after supplying oxygen to the valve, it becomes possible to keep the valve filled with oxygen by the lid opening / closing mechanism.

Therefore, when frit baking is performed, at the same time, sufficient panel baking can be performed by the oxygen filled in the valve.

Further, according to the cathode ray tube valve holder shown in FIG. 3 or 5, oxygen supply means is further provided. Therefore, not only the effect of the cathode-ray tube valve holder shown in FIG. 1 can be obtained, but also the oxygen necessary for the panel baking can be easily supplied into the valve, and the work efficiency can be achieved. Like

[0048]

As is apparent from the above description,
According to the bulb holder for a cathode ray tube according to the present invention, panel baking can be performed simultaneously with frit baking.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a bulb holder for a cathode ray tube according to the present invention.

FIG. 2 is an enlarged view of a part of FIG.

FIG. 3 is a perspective view showing another embodiment of the bulb holder for a cathode ray tube according to the present invention.

FIG. 4 is an enlarged view of a part of FIG.

FIG. 5 is a perspective view showing another embodiment of the bulb holder for a cathode ray tube according to the present invention.

FIG. 6 is an enlarged view of a part of FIG.

FIG. 7 is an explanatory diagram showing details of a valve applied to a bulb holder for a cathode ray tube according to the present invention.

FIG. 8 is a perspective view showing an example of a conventional bulb holder for a cathode ray tube.

[Explanation of symbols]

 1 Neck lid 4 Weight 10 Funnel 11 Panel 30 Oxygen injection part 31 Oxygen introduction tube

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Sunahara, 3300 Hayano, Mobara-shi, Chiba Electronic Device Division, Hitachi, Ltd. (72) Inventor Junzo Kitamura 3300, Hayano, Mobara-shi, Chiba Hitachi, Ltd. Electronic Device (72) Inventor Eisuke Inoue 3300 Hayano, Mobara-shi, Chiba Hitachi, Ltd. Electronic Device Division

Claims (2)

[Claims] 1. A cathode ray tube valve holder comprising at least a panel alignment support adjustment section and a funnel alignment support adjustment section, wherein a panel aligned by the panel alignment support adjustment section and a funnel aligned by the funnel alignment support adjustment section. A bulb holder for a cathode ray tube, comprising an opening / closing mechanism of a lid for sealing the valve after supplying oxygen into the valve constituted by 2. A cathode ray tube bulb holder comprising at least a panel alignment support adjustment section and a funnel alignment support adjustment section, wherein a panel aligned by the panel alignment support adjustment section and a funnel aligned by the funnel alignment support adjustment section. A valve for a cathode-ray tube, comprising: an oxygen supply means for supplying oxygen into the valve, and an opening / closing mechanism of a lid for sealing the valve after oxygen is supplied by the oxygen supply means. holder.