CN2278997Y

CN2278997Y - Sapphire luminotron for gas discharge lamp

Info

Publication number: CN2278997Y
Application number: CN 96243219
Authority: CN
Inventors: 俞鹤庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-23
Filing date: 1996-11-23
Publication date: 1998-04-15
Anticipated expiration: 2006-11-23

Abstract

The utility model discloses a sapphire luminous tube for gas discharge lamps, which comprises a sapphire light source electric arc tube. The utility model is characterized in that both ends of the sapphire light source electric arc tube are hermetically covered with a plug and a ring; the centers of the plug and the ring are provided with holes; the inner sides of the holes are inserted and matched with thin-wall niobium tubes which are used as the lead-out wires of electrodes; both ends of a niobium wire are respectively fused to the inner sides of the inner ends of the thin-wall niobium tubes and the electrodes by titanium. The utility model has the advantages of wide application range and long service life, and can be widely used in high sodium lamps, metal halide lamps, ultra-high pressure mercury lamps, and other gas discharge lamps.

Description

Gaseous discharge lamp sapphire luminous tube

The utility model relates to such as gaseous discharge lamp sapphire luminous tubes such as high-pressure sodium lamp, metal halide lamp, extra-high-pressure mercury vapour lamps.

At present, gaseous discharge lamp mostly is the niobium silk with the electrode outlet line at sapphire luminous tube two ends, adopts spot welding between electrode and the niobium silk.The luminous tube of this structure only limits to use the small-power gaseous discharge lamp below 150W, and can not use more than 150W in, on the high-power gas charging lamp, the scope of application is little.

The purpose of this utility model is to provide a kind of gaseous discharge lamp sapphire luminous tube, and its scope of application is big, not only can be used on the following small-power gaseous discharge lamp of 150W, also can use more than 150W in, on the high-power gas charging lamp.

Gaseous discharge lamp of the present utility model comprises sapphire light source electric arc tube with the sapphire luminous tube, and the two ends capping of electric arc tube has sapphire plug and ring, carries out sealing-in with glass solder between this plug and ring and the electric arc tube.Its works characteristics are that the electrode in the electric arc tube is drawn outside by the centre bore that niobium silk and thin-walled niobium pipe pass plug and ring, and the two ends of niobium silk use titanium and thin-walled niobium pipe to be in the same place with electrode welding respectively.

Because gaseous discharge lamp of the present utility model is a thin-walled niobium pipe with the electrode outlet line of sapphire luminous tube, niobium silk two ends use the titanium welding respectively in the inner of thin-walled niobium pipe and on the electrode, applied widely, both can be used on the following small-power gaseous discharge lamp of 150W, can be used on again 150W above in, on the high-power gas charging lamp.And owing to adopt the titanium welding between niobium silk and electrode and the thin-walled niobium pipe, solder side is big, firmly, can improve reliability and the useful life of pad under cold and hot alternate stress is loaded greatly.

Below in conjunction with drawings and Examples the utility model is described in further detail:

Accompanying drawing is a gaseous discharge lamp of the present utility model sapphire luminous tube partial schematic sectional view.

See accompanying drawing, gaseous discharge lamp of the present utility model comprises a sapphire light source electric arc tube 1 with the sapphire luminous tube, and sealing-in carried out with glass solder 5 with sapphire plug 2 and ring 3 cappings between this plug and ring and electric arc tube in its two ends.The corresponding position, center of sapphire plug 2 and ring 3 is porose, is inserted with thin-walled niobium pipe 4 in it, this thin-walled niobium pipe and sapphire plug 2 and encircle 3 between also carry out soldering and sealing with glass solder 5.The inner of thin-walled niobium pipe 4 is for sphere and leave aperture, so that make the two ends of niobium silk 6 use titanium 7 weldings respectively in the spheric end of thin-walled niobium pipe 4 and on the electrode 8.

Claims

1, gaseous discharge lamp sapphire luminous tube, comprise sapphire light source electric arc tube (1), the two ends capping of electric arc tube has sapphire plug (2) and ring (3), carry out sealing-in with glass weldering (5) material between this plug and ring and the electric arc tube, it is characterized in that the electrode (8) in the electric arc tube (1) is drawn outside by the centre bore that niobium silk (6) and thin-walled niobium pipe (4) pass plug (2), ring (3), wherein the two ends of niobium silk (6) use titanium (7) and thin-walled niobium pipe (4) and electrode (8) to be welded together respectively.

2, luminous tube according to claim 1, the inner that it is characterized in that thin-walled niobium pipe (4) is for spherical, and this spheric end leaves aperture, and the two ends of niobium silk (6) use titanium (7) welding in the spheric end of thin-walled niobium pipe (4) and on the electrode (8) respectively.