CN212257343U - Novel short tube CRT display tube - Google Patents
Novel short tube CRT display tube Download PDFInfo
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- CN212257343U CN212257343U CN202021886011.1U CN202021886011U CN212257343U CN 212257343 U CN212257343 U CN 212257343U CN 202021886011 U CN202021886011 U CN 202021886011U CN 212257343 U CN212257343 U CN 212257343U
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- crt display
- electron gun
- display tube
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Abstract
The utility model discloses a novel nozzle stub CRT display tube belongs to vacuum display tube device technical field, and aim at provides a novel nozzle stub CRT display tube, solves the problem that current CRT display tube can't use in low focus voltage system. It includes the glass bulb, the glass bulb is including glass section, glass pyramis, glass tube portion that seals in proper order, install the electron gun in the glass tube portion, the stem of electron gun is connected with the filament, the stem of electron gun is connected with the grid lead wire, be provided with the graphite layer in the glass tube portion, be provided with the aluminium lamination in the glass pyramis portion, glass section is provided with the phosphor layer, the graphite layer is connected with the aluminium lamination, the glass pyramis still is provided with the anode cap, the anode cap is connected with external high-voltage lead, the coating has the graphite layer on the anode cap. The utility model is suitable for a nozzle stub CRT display tube.
Description
Technical Field
The utility model belongs to the technical field of the vacuum display tube device, concretely relates to novel nozzle stub CRT display tube.
Background
A CRT display tube is a vacuum display tube device, which is usually used as a display source in an aircraft head-up display system for a pilot to view a displayed picture. The existing long-tube CRT display tube has the length of 163mm and the focusing voltage of 3-3.5 KV, and cannot be used in a low-focusing-voltage system. This is because the electron gun of the conventional long tube CRT display tube is not suitable for the low focus voltage system because the position of the focus electrode system on the electron gun is closer to the anode on the cone after the entire tube length is shortened, and the voltage difference between the anode and the focus electrode becomes large at a low focus voltage, which is likely to cause a high voltage ignition phenomenon.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a novel nozzle stub CRT display tube, solves the unable problem that uses in low focus voltage system of current CRT display tube.
The utility model adopts the technical scheme as follows:
the utility model provides a novel nozzle stub CRT display tube, includes the glass bulb, the glass bulb is including glass section, glass pyramis, glass tube portion that seals in proper order, install the electron gun in the glass tube portion, the stem of electron gun is connected with the filament, the stem of electron gun is connected with the grid lead wire, be provided with the graphite layer in the glass tube portion, be provided with the aluminium lamination in the glass pyramis portion, glass section is provided with the phosphor layer, the graphite layer is connected with the aluminium lamination, the glass pyramis still is provided with the anode cap, the anode cap is connected with external high-voltage lead wire with the aluminium lamination, the coating has the graphite layer on the anode cap.
Further, the gate leads are provided with a plurality of groups.
Further, the length of the electron gun is 40 mm.
Further, the length of the envelope is 125 mm.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, through improving electron gun and glass bulb structure, not only make it have a smaller size, reduce the striking sparks between focus utmost point and the positive pole simultaneously, make its adaptation low focus voltage system, have the characteristics of hi-lite, high resolution and high reliability simultaneously, homoenergetic normal work under extreme environmental conditions such as high temperature, low temperature, salt fog.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
fig. 1 is a schematic structural view of the present invention;
the labels in the figure are: 1-glass shell, 11-glass sheet part, 12-glass cone part, 13-glass tube part, 2-electron gun, 21-core column, 3-filament, 4-grid lead, 5-graphite layer, 6-aluminum layer, 7-fluorescent powder layer, 8-anode cap and 9-external high-voltage lead.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: reference numerals and letters designate similar items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; mechanical connection or electrical connection can be realized; the two original pieces can be directly connected or indirectly connected through an intermediate medium, or the two original pieces can be communicated with each other. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a novel nozzle stub CRT display tube, includes the glass bulb, the glass bulb is including glass section, glass pyramis, glass tube portion that seals in proper order, install the electron gun in the glass tube portion, the stem of electron gun is connected with the filament, the stem of electron gun is connected with the grid lead wire, be provided with the graphite layer in the glass tube portion, be provided with the aluminium lamination in the glass pyramis portion, glass section is provided with the phosphor layer, the graphite layer is connected with the aluminium lamination, the glass pyramis still is provided with the anode cap, the anode cap is connected with external high-voltage lead wire with the aluminium lamination, the coating has the graphite layer on the anode cap.
Further, the gate leads are provided with a plurality of groups.
Further, the length of the electron gun is 40 mm.
Further, the length of the envelope is 125 mm.
The utility model discloses in the implementation, reduce the whole length of glass bulb after, through annealing, degasification, burring to the gold ball part on the electron gun, can reduce the phenomenon of striking sparks between focus utmost point and the positive pole, make its adaptation focus voltage system less to make whole display tube have littleer size, have the characteristics of hi-lite, high resolution and high reliability simultaneously, homoenergetic normal work under extreme environmental conditions such as high temperature, low temperature, salt fog.
The manufacturing process of the utility model comprises the following steps:
1. the glass bulb is manufactured by sealing the glass sheet, the glass cone and the glass tube to form a glass bulb;
2. manufacturing a screen: coating fluorescent powder in the glass shell to form a fluorescent powder layer, coating graphite in the glass shell to form a graphite layer, and evaporating aluminum in the glass shell to form an aluminum layer to prepare a finished glass shell;
3. assembling an electron gun: assembling the electron gun into a finished glass shell;
4. and (3) sealing: sealing the tube orifice of the glass tube of the glass shell with a glass core column disc of the electron gun;
5. exhausting: exhausting the sealed glass shell to enable the inside of the tube to be in a vacuum state;
6. and (3) aging test: carrying out high-low pressure aging and point parameter testing on the display tube subjected to exhaust;
7. encapsulating: and (5) encapsulating the lead required for installation through a flange plate to finish a finished product.
Example 1
The utility model provides a novel nozzle stub CRT display tube, includes the glass bulb, the glass bulb is including glass section, glass pyramis, glass tube portion that seals in proper order, install the electron gun in the glass tube portion, the stem of electron gun is connected with the filament, the stem of electron gun is connected with the grid lead wire, be provided with the graphite layer in the glass tube portion, be provided with the aluminium lamination in the glass pyramis portion, glass section is provided with the phosphor layer, the graphite layer is connected with the aluminium lamination, the glass pyramis still is provided with the anode cap, the anode cap is connected with external high-voltage lead wire with the aluminium lamination, the coating has the graphite layer on the anode cap.
Example 2
On the basis of embodiment 1, the gate leads are provided with a plurality of sets.
Example 3
On the basis of the above embodiment, the length of the electron gun is 40 mm.
Example 4
On the basis of the above embodiment, the length of the envelope is 125 mm.
The above is the embodiment of the present invention. The foregoing is the preferred embodiments of the present invention, and if the preferred embodiments in the preferred embodiments are not obviously contradictory or are based on a certain preferred embodiment, the preferred embodiments can be combined and used by being superimposed at will, and the specific parameters in the embodiments and examples are only for the purpose of clearly describing the verification process of the present invention, and are not used to limit the patent protection scope of the present invention, which is still based on the claims, and all the equivalent structural changes made by applying the contents of the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The novel short tube CRT display tube is characterized by comprising a glass shell (1), wherein the glass shell (1) comprises a glass sheet part (11), a glass cone part (12) and a glass tube part (13) which are sealed in sequence, an electron gun (2) is installed in the glass tube part (13), a core column (21) of the electron gun (2) is connected with a filament (3), the core column (21) of the electron gun (2) is connected with a grid lead (4), a graphite layer (5) is arranged in the glass tube part (13), an aluminum layer (6) is arranged in the glass cone part (12), the glass sheet part (11) is provided with a fluorescent powder layer (7), the graphite layer (5) is connected with the aluminum layer (6), the glass cone part (12) is further provided with an anode cap (8), the anode cap (8) is connected with the aluminum layer (6), the anode cap (8) is connected with an external high-voltage lead (9), the anode cap (8) is coated with a graphite layer (5).
2. A new short tube CRT display tube as claimed in claim 1, wherein the grid leads (4) are provided in groups.
3. A new short tube CRT display tube as claimed in claim 1, characterized in that the electron gun (2) has a length of 40 mm.
4. A new short tube CRT display tube as claimed in claim 1, characterized in that the length of the glass envelope (1) is 125 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886011.1U CN212257343U (en) | 2020-09-02 | 2020-09-02 | Novel short tube CRT display tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886011.1U CN212257343U (en) | 2020-09-02 | 2020-09-02 | Novel short tube CRT display tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212257343U true CN212257343U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021886011.1U Active CN212257343U (en) | 2020-09-02 | 2020-09-02 | Novel short tube CRT display tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212257343U (en) |
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2020
- 2020-09-02 CN CN202021886011.1U patent/CN212257343U/en active Active
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