JPH09320467A - Cathode ray tube panel cleaning device and cleaning method - Google Patents

Abstract

(57) Abstract: A cleaning device and a cleaning method for a cathode ray tube panel, which can clean the inner surface without damaging the panel face surface and which does not adversely affect the phosphor screen production. To do. A holding mechanism (2) for holding a glass panel (1) for a cathode ray tube, a nozzle (6) for applying a surfactant solution (7) to a panel face surface (1a) of the held glass panel (1),
It has a cleaning nozzle 8 for cleaning the inner surface 1b of the glass panel 1 with a cleaning liquid 9. First, the film 7a is formed from the surfactant solution 7, and then the inner surface 1b of the glass panel 1 is washed with the washing liquid 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for cleaning an inner surface of a glass panel for a cathode ray tube with a glass etching agent, and particularly to an outer surface (hereinafter referred to as "panel face surface") of a display area of the glass panel during the cleaning. That is, a device and a method for preventing a glass etching agent from adhering to.

[0002]

2. Description of the Related Art In the manufacture of a cathode ray tube, a solution of a glass etching agent such as hydrofluoric acid is applied to the inner surface of the glass panel before forming the phosphor layer on the inner surface of the glass panel or when cleaning the phosphor layer. Wash with (washing solution). At this time,
If the cleaning liquid scatters or the hydrofluoric acid vapor drops in the form of water droplets and adheres to the panel face surface, there is a problem that stains may occur on the panel face surface. In this case, there is a problem that the glass panel or the cathode ray tube becomes a defective product because it cannot be repaired. In order to solve such a problem, a measure for covering a panel face surface with a resin sheet cover by hand before cleaning, or a measure for a panel holding device equipped with a shield cover for protecting the panel face surface (Patent Document 1) 5-211033 gazette.) Is known.

[0003]

However, in the former measure, since the sheet covers must be mounted on the panel face surface one by one, there is a problem that it takes time and is not suitable for mass production.

Further, in the latter measure, since the shielding cover is brought into close contact with the panel face surface, the shielding cover must be replaced every time the size of the glass panel to be washed is changed, resulting in a loss of time. There was a big problem. Further, when the phosphor screen manufacturing process is subsequently performed after the cleaning process, there is a problem that the quality of the phosphor screen is adversely affected by the uneven temperature distribution of the glass panel due to the effect of the shielding cover in close contact.

Therefore, the present invention is capable of cleaning the inner surface of the panel face without damaging the panel face, and at the time of manufacturing the fluorescent screen, it does not adversely affect the manufacturing of the fluorescent screen. To provide.

[0006]

According to another aspect of the present invention, there is provided an apparatus for cleaning a panel for a cathode ray tube, comprising: a holding means for holding a glass panel for the cathode ray tube; and an interface on an outer surface of a display area of the glass panel held by the holding means. It is characterized by having a coating means for coating the activator solution and a cleaning means for cleaning the inner surface of the glass panel with a glass etching agent.

According to a second aspect of the present invention, in the apparatus for cleaning a cathode ray tube panel according to the first aspect of the present invention, the thickness of the film of the surfactant solution applied by the applying means is the same as the cleaning means. The glass etching agent is characterized in that it has a depth larger than the depth of penetration of the glass etchant into the film of the surfactant solution.

According to a third aspect of the present invention, in the apparatus for cleaning a cathode ray tube panel according to the first or second aspect, the display area of the glass panel is attached to the holding means and is held by the holding means. Has a predetermined width in the direction perpendicular to the outer surface, surrounds the display area of the glass panel, and has a glass etching agent splash prevention jig arranged on the outer surface of the display area of the glass panel at a predetermined interval. It is characterized by that.

According to a fourth aspect of the present invention, there is provided a cleaning device for a cathode ray tube panel, which comprises a holding means for holding the glass panel for the cathode ray tube, and a display area of the glass panel which is attached to the holding means and held by the holding means. With a predetermined width in a direction perpendicular to the outer surface, enclosing the display area of the glass panel, a glass etching agent splash prevention jig arranged at a predetermined interval on the outer surface of the display area of the glass panel, A cleaning means for cleaning the inner surface of the glass panel with a glass etching agent is provided.

According to a fifth aspect of the present invention, in the apparatus for cleaning a cathode ray tube panel according to any one of the first to fourth aspects, the holding means is attached to the holding means so that the outer surface of the display area of the glass panel is raised by the holding means. When the glass panel is held as described above, a sheet-like member disposed directly above the display area of the glass panel is further included.

According to a sixth aspect of the present invention, in the apparatus for cleaning a cathode ray tube panel, a holding means for holding the glass panel for the cathode ray tube and the holding means are attached, and the outer surface of the display area of the glass panel is raised by the holding means. When the glass panel is held so that it has a sheet-like member arranged right above the display area of the glass panel, and a cleaning means for cleaning the inner surface of the glass panel with a glass etching agent. Is characterized by.

The method for cleaning a panel for a cathode ray tube according to claim 7 further comprises a step of holding the glass panel by a holding means, and then a surfactant solution on the outer surface of the display area of the glass panel held by the holding means. Is applied to form a film, and thereafter, the inner surface of the glass panel is washed with a glass etching agent.

The method of cleaning a panel for a cathode ray tube according to claim 8 is the method of cleaning according to claim 7, wherein the thickness of the film of the surfactant solution applied to the outer surface of the glass panel is the cleaning step. Is carried out, the glass etching agent is characterized by having a depth larger than the depth of penetration into the film of the surfactant solution.

According to a ninth aspect of the present invention, there is provided a method of cleaning a cathode ray tube panel according to the seventh or eighth aspect, wherein the glass panel is held by the holding means before the step of holding the glass panel. , Having a predetermined width in a direction perpendicular to the display area of the glass panel, enclosing the display area of the glass panel, of the glass etching agent arranged at a predetermined interval on the outer surface of the display area of the glass panel The method is characterized by including a step of attaching the splash prevention jig to the holding means.

According to a tenth aspect of the present invention, there is provided a method for cleaning a panel for a cathode ray tube, which has a predetermined width in a direction perpendicular to a display area of a glass panel when held by a holding means.
Enclosing the display area of the glass panel, a step of attaching a glass etching agent splash prevention jig arranged on the outer surface of the display area of the glass panel at a predetermined interval to the holding means, and thereafter, the glass panel is The method is characterized by including a step of holding by a holding means, and thereafter, a step of cleaning the inner surface of the glass panel with a glass etching agent.

The method of cleaning a panel for a cathode ray tube according to claim 11 is the cleaning method according to any one of claims 7 to 10, before the step of holding the glass panel, the outer surface of the display area is held by the holding means. When the glass panel is held so that it is on the upper side, a step of attaching a sheet-like member arranged right above the display area of the glass panel to the holding means is characterized.

According to a twelfth aspect of the present invention, in the method of cleaning a panel for a cathode ray tube, when the glass panel is held by the holding means so that the outer surface of the display area of the glass panel faces upward, the display area of the glass panel is A step of attaching the sheet-like member arranged directly above to the holding means, a step of holding the glass panel by the holding means, and a step of cleaning the inner surface of the glass panel with a glass etching agent after that. It is characterized by having.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment FIG. 1 and FIG. 2 schematically show a cleaning device for a cathode ray tube panel according to a first embodiment of the present invention.
FIG. 2 is a side view showing a step of applying a surfactant solution by a nozzle, and FIG. 2 is a sectional view showing a step of spraying a glass etching solution by a cleaning nozzle.

As shown in FIG. 1, the apparatus for cleaning a panel for a cathode ray tube according to the first embodiment has a holding mechanism 2 for holding a glass panel 1 for a cathode ray tube. This holding mechanism 2
Is a support cylinder 3 that rotates in the direction A by a drive mechanism (not shown) such as a motor, a head member 4 provided at the tip of the support cylinder 3, and a head member 4 attached to the head member 4 to attach the glass panel 1 to the glass panel 1. It has a pair of clamp members 5 (only one clamp member is shown in FIG. 1) to be sandwiched by the force of a spring or the like (not shown).

Further, as shown in FIG. 1, this cleaning device is a glass which is held by sandwiching a pair of clamp members 5 with the panel face surface (that is, the outer surface of the image display area) 1a facing upward. Panel face surface 1a of panel 1
Has a nozzle 6 for applying a surfactant solution 7. As the surfactant, for example, "Neugen ET-130T (trade name)" manufactured by Dai-ichi Kogyo Co., Ltd. can be used. The solution of the surfactant is "Neugen ET-130T
(Commercial name) ”with a concentration of 0.01% or more, and the application amount is 3 for one panel face surface 1a.
It is preferably 0 cc or more. This concentration 0.01%
Is the lowest concentration at which the coating 7a of the surfactant solution 7 can be formed even if mechanical oil or the like is accidentally attached to the panel face 1a, and is a value obtained by an experiment. In addition, the coating amount of 30 cc is 7 hours for hydrofluoric acid to penetrate.
Film 7a of surfactant solution 7 having a thickness of 2 seconds or more
Is the smallest amount needed to form. Other products may be used as the surfactant.

Further, as shown in FIG. 2, this cleaning apparatus has an inner surface 1b of a glass panel 1 held by being sandwiched by a pair of clamp members 5 of a holding mechanism 2 for etching glass such as hydrofluoric acid. The cleaning nozzle 8 is provided for spraying a chemical solution (that is, cleaning liquid) 9 for cleaning. The cleaning mechanism 10 supporting the cleaning nozzle 8 can be moved up and down in the direction B, and the cleaning nozzle 8 is mounted on the cleaning mechanism 10.
In contrast, it is movable in the front-rear direction orthogonal to the B direction. During cleaning, the cleaning nozzle 8 is moved in the front-rear direction while the glass panel 1 makes one rotation in the A direction by the rotation of the support cylinder 3, and the cleaning liquid 9 is sprayed on the entire inner surface 1b of the glass panel 1. The cleaning time varies depending on various conditions such as the panel size and the nozzle arrangement, but in this embodiment,
The maximum is 72 seconds.

1 and 2, 11 is a booth, and this booth 11 accommodates the glass panel 1, the holding mechanism 2, the nozzle 6, the cleaning nozzle 8 and the cleaning mechanism 10.

Next, a method of cleaning the glass panel 1 using the cleaning device of the first embodiment will be described.

First, the pair of clamp members 5 of the holding mechanism 2
Thus, the glass panel 1 is sandwiched and held so that the panel face surface 1a faces upward in the booth 11.

Next, the support panel 3 is used to attach the glass panel 1 to the A
While rotating once in the direction, the surfactant solution 7 is applied by the nozzle 6 so that the surfactant solution 7 hits the vicinity of the center of the panel face surface 1a of the glass panel 1. Since the glass panel 1 rotates due to the curved surface of the panel face surface 1a having a high central portion, the surfactant solution 7 spreads to a substantially uniform thickness to form a film 7a of the surfactant solution 7. When the coating amount of the surfactant solution 7 is large, the surfactant solution 7 spreads from the panel face surface 1a to the panel skirt portion 1c, but this does not affect the performance of the cathode ray tube.

Next, the cleaning mechanism 10 is lifted to raise the cleaning nozzle 8 so that the tip of the cleaning nozzle 8 approaches the inner surface 1b of the glass panel 1. This is to minimize the amount of the cleaning liquid 9 that hits the inner surface 1b and scatters. After that, while the glass nozzle 1 is rotated in the direction A while moving the cleaning nozzle 8 in the front-back direction, the cleaning liquid 9 is sprayed on the entire inner surface 1b of the glass panel 1 to clean the inner surface.

Thereafter, the film 7a of the surfactant solution is removed by high-pressure washing with pure water.

As described above, according to the cleaning apparatus of Embodiment 1 or the cleaning method using the same, the surface of the panel face 1a is coated with the surfactant solution 7 immediately before the cleaning of the inner surface 1b of the glass panel 1. Since the cleaning liquid 9 is formed on the panel face surface 1a, the cleaning liquid 9 does not come into direct contact with the panel face surface 1a by the film 7a of the surfactant solution 7, and the inner surface 1b is cleaned by cleaning the inner surface 1b. The face surface 1a is not damaged. Also,
According to the cleaning apparatus of Embodiment 1 or the cleaning method using the same, it is only necessary to add the nozzle 6 or the like for applying the surfactant solution 7 to the existing equipment, and there is no need to replace the existing equipment. It is advantageous in terms of cost.

Second Embodiment FIG. 3 is a side view schematically showing a cleaning device for a cathode ray tube panel according to a second embodiment of the present invention. 3, the same components as those in FIG. 1 are designated by the same reference numerals. As shown in FIG. 3, the cleaning apparatus according to the second embodiment has a holding mechanism 2
The difference from the first embodiment lies only in that the cleaning liquid splash prevention jig 20 is mounted on the head member 4 of FIG. 1 and that the nozzle 6 of FIG. 1 is not provided.

FIG. 4 is a perspective view showing a state where the cleaning liquid splash preventing jig 20 is attached to the head member 4 (when the holding mechanism 2 and the cleaning liquid splash preventing jig 20 of FIG. 3 are viewed upside down). 5 is a perspective view of the head member 4, and FIG.
FIG. 4 is a perspective view of a cleaning liquid splash prevention jig 20. As shown in FIGS. 4 and 6, when the cleaning liquid splash preventing jig 20 is attached to the holding mechanism 2, the cleaning liquid splash preventing jig 20 has a predetermined width W in a direction substantially perpendicular to the panel face surface 1 a of the glass panel 1. It is held and surrounds the panel face surface 1a of the glass panel 1 and is arranged at a predetermined interval on the panel face surface 1a.

As shown in FIG. 6, the cleaning liquid splash prevention jig 20 is provided with a rigid supporting portion 21 made of a metal plate or plastic fixed to the holding mechanism 2 and a cleaning liquid attached to the outside of this supporting portion 21. Rubber frame 2 to prevent fluff
And 2. The rubber frame 22 does not have to be manufactured using a mold, but may be formed of a rubber sheet. Further, it is desirable that the width W of the rubber frame 22 is set to a size that does not contact the panel face surface 1a when the glass panel 1 is attached to the holding mechanism 2.
In FIG. 6, 21a is a portion where the support portion 21 does not exist, that is, a hole portion.

Next, a method of cleaning the glass panel 1 by the cleaning device according to the second embodiment will be described.

First, the cleaning liquid splash prevention jig 20 shown in FIG. 6 is attached to the head member 4 of the holding mechanism 2 shown in FIG. 5 and brought into the state shown in FIG.

Next, the glass panel 1 is sandwiched by the pair of clamp members 5 of the holding mechanism 2 having the cleaning liquid splash preventing jig 20, and the panel face surface 1a is held in the booth 11.
Hold so that it faces upward.

Next, as in the case of the first embodiment (FIG. 2), the cleaning mechanism 10 is lifted to lift the cleaning nozzle 8.
And the tip of the cleaning nozzle 8 is brought close to the inner surface 1b of the glass panel 1, and while the glass nozzle 1 is rotated in the direction A while moving the cleaning nozzle 8 in the front-back direction, the cleaning liquid 9 is applied to the inner surface 1b of the glass panel 1. The entire surface is sprayed and the inner surface 1b is washed.

As described above, according to the cleaning apparatus of Embodiment 2 or the cleaning method using the same, when the glass panel 1 is held by the holding mechanism 2, the cleaning liquid splash preventing jig 20 causes the panel face surface to move. Since it surrounds the outer circumference of 1a,
The scattered cleaning liquid 9 does not reach the panel face surface 1a by the cleaning liquid splash preventing jig 20, and the panel face surface 1a is not damaged by cleaning the inner surface 1b. Further, according to the cleaning apparatus of the second embodiment or the cleaning method using the same, it is only necessary to attach the cleaning liquid splash preventing jig 20 to the existing equipment, and it is not necessary to replace the existing equipment, which leads to cost reduction. Is advantageous. Further, since the cleaning liquid splash preventing jig 20 is not in close contact with the panel face surface 1a,
It is not necessary to replace the glass panel 1 each time the size of the glass panel 1 is changed, and when the phosphor screen manufacturing process is continuously performed after the cleaning process, the temperature distribution of the glass panel is not unevenly produced, and the manufactured fluorescence is manufactured. It does not adversely affect the surface quality.

Embodiment 3 A method for cleaning a panel for a cathode ray tube according to Embodiment 3 is the cleaning apparatus of Embodiment 2 shown in FIG. 3 with the nozzle 6 of Embodiment 1 shown in FIG. 1 added. Is. In this case, since the panel face surface 1a is protected by both the cleaning liquid splash prevention jig 20 and the film 7a of the surfactant solution 7, the cleaning liquid 9 causes the panel face surface 1a to be protected.
Can be more reliably prevented from being damaged.

Fourth Embodiment FIG. 7 is a side view schematically showing a cleaning device for a cathode ray tube panel according to a fourth embodiment of the present invention. 7, the same components as those in FIG. 1 are designated by the same reference numerals. As shown in FIG. 7, the cleaning device according to the fourth embodiment has a holding mechanism 2
Near the corner of the head member 4 of the rubber sheet-like member 30
The difference from the first embodiment lies only in that the nozzle is mounted and that the nozzle 6 in FIG. 1 is not provided.

FIG. 8 is a perspective view showing a state where the rubber sheet member 30 is attached to the head member 4. As shown in FIG. 8, the sheet-like member 30 is located right above the panel face surface 1 a of the glass panel 1 when attached to the head member 4 of the holding mechanism 2. Head member 4
The corners are usually removed near the corners so that they can be easily attached at the time of mounting. Therefore, by attaching the rubber sheet-shaped member 30 to this portion, the hydrofluoric acid vapor in the booth 11 adheres to the booth cover 12 in the form of water droplets, and even if it drops, the sheet-shaped member 3
By setting 0, it is possible to prevent the panel face surface 1a from falling.

Next, a method of cleaning the glass panel 1 by the cleaning device according to the fourth embodiment will be described.

First, the sheet member 30 shown in FIG. 8 is attached to the head member 4 of the holding mechanism 2 shown in FIG.

Next, as shown in FIG. 7, the glass panel 1 is sandwiched by the pair of clamp members 5 of the holding mechanism 2 having the sheet-like member 30, and the panel face surface 1 a is set in the booth 11. Hold it face up.

Then, as in the case of the first embodiment (FIG. 2), the cleaning nozzle 10 is lifted by lifting the cleaning mechanism 10.
And the tip of the cleaning nozzle 8 is brought close to the inner surface 1b of the glass panel 1, and while the glass nozzle 1 is rotated in the direction A while moving the cleaning nozzle 8 in the front-back direction, the cleaning liquid 9 is applied to the inner surface 1b of the glass panel 1. The entire surface is sprayed and the inner surface 1b is washed.

As described above, according to the cleaning apparatus of Embodiment 4 or the cleaning method using the same, when the glass panel 1 is held by the holding mechanism 2, the sheet-like member 30 is placed on the panel face surface 2. Since the cleaning liquid adheres to the booth cover 12 and drops, the cleaning liquid does not adhere to the panel face surface 1a and damage to the panel face surface 1a can be prevented. Further, according to the fourth embodiment, it is only necessary to attach the sheet-shaped member 30 to the existing equipment, and it is not necessary to replace the existing equipment, which is advantageous in terms of cost. Further, since the sheet-shaped member 30 is not in close contact with the panel face surface 1a, it is not necessary to replace it each time the size of the glass panel 1 is changed, and
When the phosphor screen manufacturing process is subsequently performed after the cleaning process, uneven temperature distribution of the glass panel does not occur and the quality of the manufactured phosphor screen is not adversely affected. Further, since the sheet-shaped member 30 is a rubber sheet, no scratch is generated even if the panel face surface comes into contact with it.

Fifth Embodiment A method for cleaning a panel for a cathode ray tube according to a fifth embodiment is obtained by adding the nozzle 6 of the first embodiment shown in FIG. 1 to the cleaning device of the fourth embodiment shown in FIG. Is. In this case, since the panel face surface 1a is protected by both the sheet member 30 and the film 7a of the surfactant solution 7, it is possible to more reliably prevent the cleaning liquid 9 from damaging the panel face surface 1a.

Embodiment 6 A method for cleaning a panel for a cathode ray tube according to Embodiment 6 is the same as the cleaning device according to Embodiment 4 shown in FIG. Is added. In this case, the panel face surface 1 is formed by both the sheet-shaped member 30 and the cleaning liquid splash preventing jig 20.
Since a is protected, damage to the panel face surface 1a by the cleaning liquid 9 can be prevented more reliably.

Embodiment 7 A method of cleaning a panel for a cathode ray tube according to Embodiment 7 is the same as that of the cleaning apparatus of Embodiment 4 shown in FIG. 7, the nozzle 6 of Embodiment 1 shown in FIG. The cleaning liquid splash prevention jig 20 of the second embodiment shown is added.
In this case, since the panel face surface 1a is protected by the sheet-shaped member 30, the cleaning liquid splash prevention jig 20, and the film 7a of the surfactant solution 7, the damage to the panel face surface 1a by the cleaning liquid 9 can be further ensured. It can be prevented.

[0048]

According to the invention of claim 1 or claim 7,
While the surface of the glass panel is coated with a surfactant solution to form a film, the inner surface of the glass panel is cleaned with a glass etching agent, so that even if the glass etching agent scatters, the outer surface of the display area of the glass panel There is an effect that damage to the outer surface of the glass panel can be prevented without directly touching. Further, since it is only necessary to add a means for applying the surfactant solution to the existing equipment and it is not necessary to replace the existing equipment, there is an advantage in terms of cost.

Further, according to the invention of claim 2 or claim 8, the thickness of the film of the surfactant solution applied to the outer surface of the glass panel is such that the glass etching agent is applied during the cleaning step. Is greater than the depth at which the glass penetrates into the surfactant, so that there is an effect that it is possible to more reliably prevent damage to the outer surface of the glass panel due to the glass etching agent.

Further, according to the invention of claim 3 or claim 9, since the outer surface of the display area of the glass panel is protected by both the anti-scratch jig and the film of the surfactant solution, the glass etching agent is used. It is possible to more reliably prevent damage to the outer surface of the glass panel.

Further, according to the invention of claim 4 or claim 10, since the splash prevention jig surrounds the outer periphery of the glass panel, the scattered glass etching liquid is made to reach the outer surface of the glass panel by the splash prevention jig. First, there is an effect that the outer surface of the glass panel can be prevented from being damaged by cleaning the inner surface.
Further, since it is only necessary to attach the splash prevention jig to the existing equipment and there is no need to replace the existing equipment, there is an advantage in terms of cost. Furthermore, since the splash prevention jig does not adhere to the glass panel, it does not need to be replaced each time the size of the glass panel is changed.
When the phosphor screen manufacturing process is subsequently performed after the cleaning process, there is an effect that uneven temperature distribution of the glass panel does not occur and the quality of the manufactured phosphor screen is not adversely affected.

In addition, according to the invention of claim 5 or claim 11, in addition to the sheet-like member, since it is provided with a film for preventing splashing and / or a surfactant solution, a glass panel using a glass etching agent. It is possible to more reliably prevent damage to the outer surface.

Further, according to the invention of claim 6 or claim 12, since the sheet-shaped member covers the outer surface of the glass panel, even if the water-drop-shaped glass etching agent drops, it adheres to the glass panel. There is an effect that damage can be prevented. Further, since it is only necessary to attach the sheet-shaped member to the existing equipment and it is not necessary to replace the existing equipment, there is an advantage in terms of cost. Further, since the sheet-shaped member is not in close contact with the glass panel, it is not necessary to replace the sheet-shaped member each time the size of the glass panel is changed, and when the phosphor screen manufacturing process is continuously performed after the cleaning process, the glass panel There is an effect that uneven temperature distribution does not occur and the quality of the manufactured phosphor screen is not adversely affected.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a step of applying a solution of a surfactant by a cleaning device for a cathode ray tube panel according to a first embodiment of the present invention.

FIG. 2 is a side view schematically showing a step of cleaning the inner surface of the glass panel by the cleaning device for a cathode ray tube panel according to the first embodiment of the present invention.

FIG. 3 is a side view schematically showing a cleaning device for a cathode ray tube panel according to a second embodiment of the present invention.

FIG. 4 is a view showing the holding mechanism 2 and the cleaning liquid splash preventing jig 20 shown in FIG.
FIG.

5 is a perspective view showing the holding mechanism 2 of FIG. 3. FIG.

FIG. 6 is a perspective view showing a cleaning liquid splash preventing jig 20 of FIG.

FIG. 7 is a side view schematically showing a configuration of a cathode ray tube panel cleaning device according to a third embodiment of the present invention.

8 is a perspective view showing a state in which a sheet-shaped member is attached to the head of the holding mechanism in FIG.

[Explanation of symbols]

1 glass panel, 1a panel face surface, 1b
Inner surface, 1c skirt part, 2 holding mechanism, 3
Support tube, 4 head members, 5 clamp members, 6
Nozzle, 7 Surfactant solution, 7a film, 8
Cleaning nozzle, 9 cleaning solution, 11 booth, 12
Booth cover, 20 splash prevention jig, 30 sheet-like member.

Claims (12)

[Claims] 1. A holding means for holding a glass panel for a cathode ray tube, an applying means for applying a surfactant solution to an outer surface of a display area of the glass panel held by the holding means, and an inner surface of the glass panel. A cleaning device for a cathode ray tube panel, comprising: cleaning means for cleaning with a glass etching agent. 2. The thickness of the film of the surfactant solution applied by the applying means is such that the glass etchant penetrates into the film of the surfactant solution while the cleaning by the cleaning means is being performed. 2. The apparatus for cleaning a cathode ray tube panel according to claim 1, wherein the depth is larger than the depth. 3. A display area of the glass panel, which is attached to the holding means and has a predetermined width in a direction perpendicular to an outer surface of a display area of the glass panel held by the holding means, 3. The cathode ray tube panel cleaning apparatus according to claim 1, further comprising a glass etching agent blush prevention jig which is arranged on the outer surface of the display area of the glass panel with a predetermined interval. 4. Holding means for holding a glass panel for a cathode ray tube, and a predetermined width in a direction perpendicular to an outer surface of a display area of the glass panel, which is attached to the holding means and held by the holding means. Holding the glass panel display area, a glass etching agent splash prevention jig arranged at a predetermined interval on the outer surface of the glass panel display area, and cleaning the inner surface of the glass panel with the glass etching agent. A cleaning device for a panel for a cathode ray tube, comprising: a cleaning means. 5. When the glass panel is attached to the holding means and is held by the holding means such that the outer surface of the display area of the glass panel faces upward, the glass panel is directly above the display area of the glass panel. The apparatus for cleaning a panel for a cathode ray tube according to any one of claims 1 to 4, further comprising a sheet-shaped member arranged. 6. A holding means for holding a glass panel for a cathode ray tube, and the holding means, which is attached to the holding means and holds the glass panel so that the outer surface of the display area of the glass panel faces upward. 1. A cleaning device for a cathode ray tube panel, further comprising: a sheet-like member disposed immediately above a display area of the glass panel; and a cleaning unit that cleans an inner surface of the glass panel with a glass etching agent. 7. A step of holding a glass panel by a holding means, and thereafter a step of applying a surfactant solution to the outer surface of the display area of the glass panel held by the holding means to form a film, and thereafter. And a step of cleaning the inner surface of the glass panel with a glass etching agent, the method of cleaning a panel for a cathode ray tube. 8. The thickness of the film of the surfactant solution applied to the outer surface of the glass panel is such that the glass etchant is applied to the film of the surfactant solution during the cleaning step. The method for cleaning a panel for a cathode ray tube according to claim 7, wherein the depth is greater than the penetration depth. 9. Prior to the step of holding the glass panel, when held by the holding means, the glass panel has a predetermined width in a direction perpendicular to the display area of the glass panel, 9. The method according to claim 7, further comprising a step of attaching a glass etching agent splash preventing jig, which surrounds the area and is arranged on the outer surface of the display area of the glass panel at a predetermined interval, to the holding means. A method for cleaning a panel for a cathode ray tube as described in 1. 10. When held by the holding means, the glass panel has a predetermined width in a direction perpendicular to the display area of the glass panel, surrounds the display area of the glass panel, and is provided on the outer surface of the display area of the glass panel. A step of attaching a glass etching agent splash prevention jig arranged at a predetermined interval to the holding means; a step of holding the glass panel by the holding means; and a glass etching of the inner surface of the glass panel. A method of cleaning a panel for a cathode ray tube, comprising: a step of cleaning with an agent. 11. When the glass panel is held by the holding means so that the outer surface of the display area faces up before the step of holding the glass panel, the glass panel is directly above the display area of the glass panel. The method for cleaning a panel for a cathode ray tube according to any one of claims 7 to 10, further comprising a step of attaching the sheet-shaped member arranged in (1) to the holding means. 12. The holding member is a sheet-like member disposed right above the display area of the glass panel when the glass panel is held by the holding means so that the outer surface of the display area of the glass panel faces upward. And a step of holding the glass panel by the holding means, and then a step of cleaning the inner surface of the glass panel with a glass etching agent, a method for cleaning a panel for a cathode ray tube, comprising: .