CN200944389Y - Discharge luminescent tube sealing end device - Google Patents

Abstract

The utility model relates to a luminotron sealing end device especially relates to one kind and uses in the luminotron, also can use in plasma display, gas-supplementing bottle etc. have the sealing end device on the sealing structure, and it is in the luminous body of discharging or plasma glass substrate's a department of linking pipe, sets up the metal composite tube that can seal the operation, and this metal composite tube mainly is including at least one tubular metal resonator that has got rid of gas and at least one alloy pipe that has got rid of gas through connecting the compound body that airtight combination formed.

Description

Discharge luminescent tube sealing end device

technical field

The utility model relates to a sealing end device of a discharge luminous tube, in particular to a sealing end device which is used in a discharge luminous tube, and can also be used in a plasma display, a gas filling bottle and the like with a sealing structure.

Background technique

The structure of the discharge luminous tube is mostly provided with electrodes at both ends of the glass tube or cavity (hereinafter referred to as the tube), and the inside of the tube is filled with inert gas, and the inside of the tube is coated with a material that can be excited to generate Visible light fluorescent agent, when the electrodes at both ends of the tube are energized, it will excite the fluorescent body to produce visible light for lighting.

Similarly, the plasma display also needs to be filled with an inert gas between the display substrates. After the gas is filled, it also needs to be sealed so that the display substrate can generate plasma under the excitation of the electrodes to display the desired pattern.

The gas supply bottle is a supplementary device used for supplementing gas when the internal gas of the above-mentioned discharge luminous tube is reduced.

Please refer to Fig. 10, when the conventional discharge light-emitting tube is used for gas filling operation, the structure is mostly provided with a glass hollow connecting tube 81 at one end of the glass tube body 80, and then connected with a connecting tube 90 at one end of the connecting tube 81. Filling device 91 is connected (this connecting pipe 90 can be made with rubber tube or welded another glass tube), this filling device 91 has exhaust system 92 and gas supply system 93, and exhaust system 92 and gas supply system 93 and connecting pipe A first air valve 94 and a second air valve 95 are respectively arranged between them. When the gas filling operation is carried out, the first air valve 94 is first opened and the second air valve 95 is closed. Existing impurity gas is drawn out to make the inside of the glass tube 80 close to a vacuum state, then the first gas valve 94 is closed and the second gas valve 95 is opened, and the gas filling system 93 is used to fill the gas into the glass tube 80 .

Please refer to FIG. 10 and FIG. 11 . After the gas is filled and supplemented, close the second gas valve 95, and then melt one end of the connecting pipe 81 to complete the sealing operation.

However, when the above-mentioned discharge luminous tube is performing air supply sealing operation, because the object of its melting and sealing structure is the connecting pipe 81 made of glass, when the connecting pipe 81 is subjected to high-temperature melting, the glass itself will generate water vapor, carbon dioxide and Other impurity gases, and these impurity gases are easily generated by the melting of the connecting tube 81 and accumulated in the glass tube body 80 and cannot be discharged, resulting in the problem of unstable air pressure and impure color in the discharge luminescent tube, so the two must be separated. The electrode is pressurized and energized to cause aging, and the impurity gas is adsorbed on the electrode to perform the step of removing the impurity gas, but the time required is usually several hours or so, which not only increases the cost of manufacturing the discharge light-emitting tube, but also improves the quality. It is more difficult to control in terms of control. In addition, poor glass melting and sealing operation will cause a slight air leakage problem at an instant, and when the glass is melting, if the melting area is too large and softens, the molten part of the glass will be internally The pressure difference between the vacuum and the external atmospheric pressure squeezes the holes, and a large amount of air is sucked into the vacuum chamber instantly, resulting in the failure of the entire manufacturing process.

In addition, in the sealing operation of the plasma display, its structural processing method is similar to that of the above-mentioned discharge glass tube, so the detailed description thereof will be omitted here.

In addition, as for glass tubes such as gas supply bottles, since they are only used to supply gas, there are no electrodes inside, making it more difficult to remove the miscellaneous gas generated during the sealing of the gas supply.

In addition, when the above-mentioned structure is used in the case of a discharge glass tube, an electrode tip 82 must be installed at one end of the glass tube body 80. The electrode tip 82 is separated from the glass tube body 80 and extends to the glass tube body 80 through a wire 83 It is very cumbersome to make the electrical connection work on the outside. If there is an error in the combination of the electrode tip 82 and the glass tube body 80, it is easy to cause the discharge glass tube to lose its proper function.

Furthermore, the heat generated by the electrode head 82 with the above structure cannot be effectively removed, resulting in a shortened service life of the electrode head 82 due to the heat storage effect generated by the heat during operation.

Utility model content

In view of the defects of the gas supply sealing structure of the above-mentioned traditional discharge luminous tube, the inventor of the present utility model is actively engaged in research and development, in order to solve the problem of the sealing structure of the above-mentioned traditional discharge luminous tube and the gas supply tube, after continuous testing and efforts, finally Develop the utility model.

The first purpose of this utility model is to provide a sealing end device for a discharge luminous tube, a plasma display, and an air filling bottle that can avoid a low pass rate due to the generation of miscellaneous gas during sealing.

The second purpose of the present invention is to provide a sealing end device that can facilitate assembly of the electrode head and facilitate sealing or connection to reduce the working temperature of the electrode head.

In order to achieve the above purpose, the utility model adopts the following technical means to achieve, wherein the utility model is located at one end of the connecting tube of the discharge luminescent tube body or the plasma glass substrate, and a metal composite tube capable of sealing operation is arranged. The metal composite tube is mainly It includes a composite pipe body formed by connecting and airtightly combining at least one metal pipe from which gas has been removed and at least one alloy pipe from which gas has been removed.

In addition, in the utility model, an electrode head is fixed at one end of the metal composite tube inside the discharge luminous tube body, and a wire is connected to the outside of the metal composite tube.

By setting the metal composite pipe after the air supply and filling operation is completed, one end of the metal composite pipe can be directly crushed to make it airtight and cut off by melting, so there will be no problem of miscellaneous gas generated in the traditional glass melting operation , so the step of removing impurities can be omitted to reduce the production cost of discharge luminescent tubes and plasma displays, and ensure the quality of their products.

In addition, since the electrode head is integrally arranged at one end of the metal composite tube, there is no need to additionally arrange and pull out wires, and the assembly is easier, so the manufacturing cost can be reduced. In addition, since the electrode head is directly arranged at one end of the metal composite tube, and the temperature of the electrode head can be greatly reduced by the heat sink, it can reduce the range of spattering caused by the high temperature of the electrode head, and reducing spatter means increasing the lamp tube. lifespan. Furthermore, the combination of the electrode head and the metal composite pipe is a convenient operation in the manufacture of the present invention, thus simplifying the complicated work of the second stage.

Description of drawings

Fig. 1 is a sectional view of the first embodiment of the utility model.

Fig. 2 is a perspective view of the second embodiment of the utility model.

FIG. 3 is an enlarged cross-sectional view of FIG. 1 .

FIG. 4 is an enlarged cross-sectional view of FIG. 2 .

Fig. 5 is a cross-sectional view of the third embodiment of the present invention.

Fig. 6 is a cross-sectional view of a fourth embodiment of the present invention.

Fig. 7 is a sectional view of the fifth embodiment of the present utility model.

Fig. 8 is a cross-sectional view of the sixth embodiment of the present invention.

Fig. 9 is a reference diagram of comprehensive use states of various embodiments of the present utility model.

Fig. 10 is a sectional view of a conventional device.

Fig. 11 is an enlarged sectional view of a conventional device.

Detailed ways

The sealing end device of the discharge luminescent tube, the plasma display or the gas supply bottle of the utility model is mainly provided with a metal composite tube capable of sealing operation at one end of the discharge luminous tube body or the plasma glass substrate. The pipe is mainly a composite pipe body formed by at least one metal pipe from which gas has been removed and at least one alloy pipe from which gas has been removed, which are sleeved and welded in series and airtight.

Please refer to Fig. 1-4, this is an embodiment of the utility model applied to a discharge luminous tube, the discharge luminous tube has a glass tube body 10, and the utility model is provided at the connecting end of the glass tube body 10. A new type of sealing end device, the embodiment of the sealing end device is a metal composite tube 20 composed of a copper tube 21 and an alloy tube 22 set outside the copper tube 21, the alloy tube 22 and the glass tube body 10 The connecting ends are airtightly welded, and the outer side of the copper tube 21 is integrally provided with a connecting block 23 at a position different from the contact between the alloy tube 22 and the glass tube body 10, so that the alloy tube 22 is in contact with the copper tube 21 except at the position of the connecting block 23 , the other positions are all formed with a distance 24 between the copper tube 21, and the copper tube 21 is directly fixed with an electrode head 30 at one end extending into the glass tube body 10, and the other end can be connected with a traditional filling device 91. In the copper tube 21, the position on the outside of the glass tube body 10 can be directly bound with a wire 31, and as shown in Figure 2 and Figure 4, on the copper tube 21, a plurality of heat dissipation devices can be added at the position on the outside of the glass tube body 10 finned heat sink 32 . In addition, the copper tube 21 outside the glass tube body 10 may be provided with a heat-conducting insulating rubber 29 or coated with an insulating material to avoid leakage of the tube body.

Because the sealing end device of the present utility model is made of metal composite pipe 20, there will be no bad problems caused by gas generation caused by direct sealing operation on glass in the existing structure, and because the electrode head 30 is directly arranged on the metal The composite tube 20 is located at one end of the glass tube body 10, so the positioning effect can be greatly improved, and because the electrode tip 30 is directly arranged on the copper tube 21 of the metal composite tube 20, the heat generated by the electrode tip 30 can be obtained by The metal composite tube 20 is quickly transferred to the outside of the glass tube body 10, and the heat is dissipated quickly through the heat dissipation device 32 arranged on the copper tube 21, so the life of the discharge luminous tube can be increased. The troublesome wire setting step is eliminated, and the wire 31 is directly arranged on the copper tube 21 located outside the glass tube body 10, so the manufacturing is very simple. Also, since the copper tube 21 and the alloy tube 22 of the metal composite tube 20 form a gap 24 at the joining end of the glass tube body 10, even if the copper tube 21 is thermally expanded, it will not support the alloy tube 22 and the glass tube body 10. The contact position can prevent the glass tube body 10 from being broken and damaged.

A sealing agent 25 may be coated on the outside of the position where the connecting end of the above-mentioned glass tube body 10 is connected with the alloy tube 22, so as to enhance the leak-proof effect.

In addition, the metal composite pipe 20 can also be a composite pipe body formed by airtightly combining metal pipes and alloy pipes or metal pipes connected with another metal pipe, that is, the first section of pipe body is fused with glass, and the airtight connection The second tube body can be easily crushed or pressed without cracks, so that the rubber tube can be connected for gas filling, and even extended from the second tube body, and then airtightly connected to the third tube body, so as to weld the glass Exhaust and inflate the tube to facilitate the high temperature and high pressure exhaust operation, while the sealing operation is still performed on the second tube body. The above-mentioned metal pipes can be oxygen-free copper pipes, metal pipes with copper/nickel plating on the outer layer and/or inner layer, iron-nickel alloy pipes, etc., or soft alloy pipes that can be pressed and have good thermal conductivity, or can be solid The metal rod is arranged at the other end which is not sealed.

The metal composite pipe 20 of the sealing end device of the utility model is filled with gas in the same way as the traditional structure. When the filling is completed, the middle section or tail end of the metal composite pipe 20 is cut, flattened, melted and sealed. There is gas generation that affects the quality of the discharge luminescent tube.

The expansion coefficient of the alloy tube 22 of the above-mentioned metal composite tube 20 is similar to that of glass, and besides the property that it is easy to form an oxide layer when fusing with glass, the copper tube 21 can further have better flexibility and ductility. In order to facilitate flattening and pressing, there will be no cracks or cracks in the pipe wall. The copper tube may be an oxygen-free copper tube. The alloy tube 22 can be made of 426 nickel-iron alloy or KOVAR or other alloys for removing gas.

In addition, the copper pipe 21 of the metal composite pipe 20 outside the glass pipe body 10 may be connected with multiple metal pipes or alloy pipes, and the effect is equivalent to the above-mentioned embodiment.

Since the flattening and high-temperature melting of the present invention are performed on the gas-free metal composite tube 20, there will be no problems such as glass and other substances that generate water vapor or carbon dioxide and other miscellaneous gases due to high temperature, and cause the problem that the discharge light-emitting tube is easy to age. In addition, since there is no generation of miscellaneous gas, the tedious work of removing miscellaneous gas can be omitted in the process, which can reduce the production cost and ensure the quality of the product.

Please refer to Fig. 5, which is the structure of the above-mentioned electrode head 30 fixed on one end of the copper tube 21 of the metal composite tube 20, and an assembly tube 33 which is in contact with the inner wall of the copper tube 21 extends from one end of the copper tube 21 toward the inside of the copper tube 21. , thereby increasing the contact area between the electrode head 30 and the copper pipe 21, so that the heat dissipation efficiency can be greatly improved.

Please refer to again shown in Fig. 6, the utility model also can be used for the connection pipe body of two discharge luminescent tubes, and this embodiment is similar in structure with the above-mentioned embodiment, and its difference is that the two ends of copper tube 21 are respectively covered with and Each glass tube body 10 is connected with an alloy tube 22, and the two ends of the copper tube 21 are respectively provided with an electrode head 30, so that the purpose of connecting two discharge luminescent tubes can be achieved.

Referring to Fig. 7 again, the outer side of the copper tube 21 of the present utility model can also be provided with two connecting blocks 23 according to a distance, and each connecting block 23 is different from the contact position of the connecting end of the alloy tube 22 and the glass tube body 10 respectively. Connect with the alloy tube 22, and form a closed space 26 between the copper tube 21 and the alloy tube 22. The copper tube 21 is provided with a through hole 27 at a position corresponding to the closed space 26, so that the airtight space can be sealed when pumping air. The air in the space 26 is definitely removed. Since the copper tube 21 and the alloy tube 22 of this structure are connected by two connection blocks 12, the relative stabilizing effect between the copper tube 21 and the alloy tube 22 can be improved without Shaking occurs.

Please refer to Fig. 8 again, this embodiment is similar to the embodiment shown in Fig. 7, the difference is that a heat insulating sheet 28 can be added in the enclosed space 26, thereby increasing the copper pipe 21 and The thermal insulation effect at the connecting end of the glass tube body 10 prevents the glass tube body 10 from being broken due to the heat of the copper tube 21 .

Please refer to Figure 9, which is the comprehensive use state of the present utility model, which applies the above-mentioned implementation modes to the connection and sealing of the glass tube bodies 10 of a plurality of discharge luminous tubes, as shown in the figure, three discharge luminescent tubes The glass tube body 10 of the tube, wherein the metal composite tube 20 between the two glass tube bodies 10 is not sealed, and the two ends are respectively provided with electrode heads, so that the series connection of multiple discharge light-emitting tubes can be achieved, and because The electrode tip is directly connected to the metal composite tube 20, so it is not necessary to set the electrode tip inside the glass tube body 10 as in the existing structure, and then perform the setting operation of the wire 31 passing through the glass tube body, so it is very convenient, the wire 31 is directly installed On the metal composite tube 20 that can be electrically connected with the electrode head, the manufacturing cost can be reduced, and the metal composite tube 20 at the end of the discharge luminous tube at the most two ends can be sealed, so it is very easy to manufacture. The advantage of this embodiment is that the extraction process simplifies the process. In addition, the gas pressure of each lamp tube is always consistent, so that the brightness of the lamp tubes can be kept consistent, which is very beneficial in the application of backlights.

Explanation of reference signs

10 glass tube body

20 metal composite pipe

21 copper tube

22 alloy tube

23 connection block

24 pitch

25 Sealant

26 confined space

27 through holes

28 heat shield

29 insulating rubber

30 electrode tips

31 wire

32 heat sink

33 assembly tube

80 glass body

81 connecting pipe

82 electrode head

83 wires

90 connecting pipe

91 filling device

92 exhaust system

93 Air supply system

94 The first air valve

95 Second air valve

Claims (19)

1. A discharge luminous tube sealing end device, which is arranged at the sealing connection end of the discharge luminous tube and can carry out sealing or connection operation, it is characterized in that, The sealing end device is a metal composite pipe composed of at least one metal pipe and at least one alloy pipe airtightly welded with the metal pipe. 2. The sealing end device of discharge luminous tube according to claim 1, characterized in that, the alloy tube is hermetically sealed with the glass connecting end of the discharge luminous tube, and the outer side of the metal tube is different from the contact between the alloy tube and the glass of the discharge luminous tube. The position of the alloy tube is airtightly welded to the alloy tube, so that apart from the position where the alloy tube is in contact with the metal tube, there is a gap between the other positions and the metal tube. The end of the metal tube extending into the discharge luminous tube is directly fixed with an electrode head. On the metal tube, wires are arranged outside the glass tube body. 3. The sealing end device of the discharge luminescent tube according to claim 2, characterized in that, the outer side of the metal tube is connected to the alloy tube at a distance different from the contact position of the connecting end of the alloy tube and the glass tube body, and A closed space is formed between the metal pipe and the alloy pipe. 4. The sealing end device of the discharge luminescent tube according to claim 3, wherein a through hole is provided in the metal tube at a position corresponding to the closed space. 5 . The sealing end device of the discharge luminous tube according to claim 2 , 3 or 4 , characterized in that, the metal tube is provided with an integrally formed connecting block on its outer side to contact the alloy tube. 6 . 6. The sealing end device of the discharge luminous tube according to claim 3 or 4, characterized in that a heat insulating sheet is provided in the enclosed space. 7. The sealing end device of the discharge luminous tube according to any one of claims 1 to 4, characterized in that, on the metal tube, a heat dissipation device with a plurality of cooling fins is added at a position outside the discharge luminous tube. 8. The sealing end device of discharge luminous tube according to claim 2, characterized in that, the electrode head is fixed on the structure of one end of the metal tube of the metal composite tube, and is extended toward the inside of the metal tube by an end of the metal tube with a Assembled pipe in which the inner walls of the metal pipe are in contact. 9. The sealing end device of the discharge luminescent tube according to claim 2, wherein the electrode head is fixed on the structure of one end of the metal tube of the metal composite tube, and is extended from one end of the metal tube to the outside of the metal tube with a Assembled pipe in which the outer walls of the metal pipe are in contact. 10 . The sealing end device of the discharge luminous tube according to claim 2 , wherein a sealing agent is coated on the outside of the position where the connecting end of the discharge luminous tube is connected to the alloy tube. 11 . 11. The sealing end device of a discharge luminous tube according to any one of claims 1 to 4, characterized in that, the outer side of the metal composite tube is coated with a heat insulating layer. 12. The sealing end device of the discharge luminescent tube according to claim 1, wherein the metal tube is an oxygen-free copper tube. 13. The sealing end device of the discharge luminescent tube according to claim 1, wherein the metal tube is a metal tube with a copper-plated electroplating layer. 14. The sealing end device of the discharge luminescent tube according to claim 1, wherein the metal tube is a metal tube with a nickel plating layer. 15. The sealing end device of a discharge luminescent tube according to claim 1, wherein the metal tube is a soft alloy tube that can be pressed and has good thermal conductivity. 16. The sealing end device of a discharge luminescent tube according to claim 1, wherein the metal tube is a solid metal rod. 17. The sealing end device of the discharge luminescent tube according to claim 1, wherein the alloy tube is an iron-nickel alloy tube. 18 . The sealing end device of the discharge luminous tube according to claim 1 , wherein an insulating material is provided on the metal tube outside the discharge luminous tube. 19 . 19. The sealing end device of a discharge luminous tube according to claim 1, wherein the insulating material is thermally conductive insulating rubber.

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