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Electric lamp with feedthrough comprising gauze

A technology of wire mesh and electric lamps, which is applied in the direction of discharge lamps, gas discharge lamps, parts of gas discharge lamps, etc., can solve the problems of tensile stress quartz glass cracking, corrosion of current conductors, unsafe bulbs, etc., to achieve enhanced lumens Keep the effect

Inactive Publication Date: 2005-05-11
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] A further disadvantage of the known bulb is that the outer current conductors corrode and subsequently expand, and / or the metal strips in the quartz glass wall lead to correspondingly high tensile stresses in the quartz glass
Since there is only little room for expansion in the quartz glass wall and there is a large amount of oxidation-sensitive substances, there is a danger that the tensile stress will reach a critical value and lead to a subsequent fracture of the quartz glass
This breakage raises the risk of the known bulb bursting, so the known bulb is relatively unsafe

Method used

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  • Electric lamp with feedthrough comprising gauze
  • Electric lamp with feedthrough comprising gauze
  • Electric lamp with feedthrough comprising gauze

Examples

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Embodiment Construction

[0026] exist figure 1 In this case, the electric lamp is a high-pressure gas discharge lamp, which has a gas-tightly closed lamp vessel 1 and has a quartz glass wall 2 containing a space 3 . The electrical components 4 are connected to respective wire meshes 6 via inner current conductors 5, in figure 1 Among them, the wire mesh 6 is composed of 0.5% by weight of La 2 o 3 made of W. Electrical components 4 in figure 1In is a pair of electrodes, but it can also be replaced by an incandescent body. An inner current conductor 5 protrudes from the wall 2 of the lamp vessel 1 into the space 3 . A wire mesh is embedded in the wall 2 of the lamp vessel 1 and is connected, for example welded, to the respective outer current conductor 7, which is in the figure 1 Made of molybdenum.

[0027] The inner current conductor 5 and the electrical element 4 are made of tungsten with small amounts of constituents that regulate the crystal growth of tungsten, such as 0.01% by weight of K, ...

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Abstract

An electric lamp comprising: a gas-tightly sealed lamp vessel (1) having a quartz glass wall (2) enclosing a space (3) in which electrical components (4) are arranged; a lead wire ( 8), comprising: a foil-shaped metal seal (6) fully embedded in the wall (2) of the lamp tube (1), which forms an airtight seal with the quartz glass wall (2); connected to the metal seal The inner current conductor (5) on (6), which protrudes into the above-mentioned space (3) and is connected to the electrical component (4); the outer current conductor connected to the metal seal (6) in a connection area (9) (7), which extends through the wall (2) to the outside, is characterized in that the metal seal (6) is a wire mesh. The use of wire mesh (6) can reduce the risk of strong oxidation of the metal seal and reduce the risk of excessive tensile stress in the seal. This increases the safety of the bulb.

Description

technical field [0001] The invention relates to an electric lamp comprising: [0002] A lamp vessel sealed in a hermetically sealed manner, having a quartz glass wall enclosing a space in which electrical components are arranged; [0003] A lead, including: [0004] A foil-shaped metal seal that is fully embedded in the tube wall, thereby forming a hermetic seal with the quartz glass wall; [0005] Internal current conductors connected to metal seals, which protrude into the above-mentioned space and are connected to electrical components; [0006] The outer current conductor, which is connected at a connection zone to the metal seal, extends through the bulb wall to the outside. Background technique [0007] GB496679 discloses such a bulb. In this known bulb, the metal seal is a metal strip made of molybdenum, for example. The hermetic seal between the metal strip and the quartz glass wall presents tensile stress in the quartz glass wall due to the different linear the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/36
CPCH01J61/36H01J61/368
Inventor M·W·斯泰曼恩
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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