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discharge lamp

A technology for discharge lamps and high-pressure discharge lamps, which is applied in the direction of discharge lamps, gas discharge lamps, high-pressure discharge lamps, etc., to achieve the effect of durable conductive connection

Inactive Publication Date: 2015-09-09
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A disadvantage of this connection is its expense for precisely producing the holes in the electrodes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 An exemplary embodiment of an electrode 1 of a high-pressure discharge lamp according to the invention is shown in side section. The electrode has a largely cylindrical body, wherein the electrode (in figure 1 Middle) On the right side, a frustoconical section is formed, on the end face of which a light arc (not shown) burns during lamp operation.

[0021] This example (according to Figures 1 to 4 ) shows the anode of a DC discharge lamp with an outer diameter of approximately 22 mm, wherein the invention is equally applicable to the cathode of a DC discharge lamp and the electrodes of an AC discharge lamp and a flash lamp.

[0022] An intermediate part receptacle 4 in the form of a concentric blind bore is arranged on the end face 2 of the electrode 1 facing away from the light arc. The diameter of the intermediate part receptacle 4 here is approximately 12 mm.

[0023] figure 2 is shown with a graphite middleware 6 based on figure 1 The graphite inter...

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PUM

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Abstract

The invention relates to a discharge lamp having a discharge vessel and two electrodes (1) arranged therein, each fastened on a current supply (10). A graphite spacer piece (6) is arranged between at least one current supply and the electrode fastened thereupon. Said graphite spacer piece is an electrically conductive and cost-effective connection means. Soldering of the connection is eliminated. In a method for fastening the electrode to the current supply of a discharge lamp according to the invention, a through-bore or a blind bore is introduced to the graphite spacer piece. This occurs either before or after the graphite spacer piece is pressed into a blind bore of the electrode. A simple to produce but durable electrically conductive connection between the current supply, the graphite spacer piece and the electrode is thus created.

Description

technical field [0001] The invention relates to a discharge lamp having a discharge vessel and two electrodes arranged in the discharge vessel, the two electrodes being respectively fixed on a feeder; and a device for mounting the electrodes on the corresponding feeder method. Background technique [0002] Discharge lamps have two electrodes accommodated in a discharge vessel, between which electrodes light is emitted from a light arc during lamp operation. During the production of such discharge lamps, the aim is to make it as simple as possible to attach the electrodes to the associated, generally rod-shaped feeder, which protrudes into the discharge vessel. The electrodes usually consist of tungsten, while the feed means consist of tungsten or molybdenum. The connection between the feeder and the electrodes fastened thereto must be electrically conductive and also mechanically durable. [0003] For fastening, the electrodes are provided with blind holes, into which the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/073H01J61/86
CPCH01J61/073H01J61/86
Inventor 斯文-乌韦·巴克格哈德·莱夫勒迪尔克·罗森塔尔沃尔夫冈·塞茨
Owner OSRAM GMBH