SU860174A1 - Composition of laed in into gas-discharge tubebulb - Google Patents

Description

(54) SEALING CERTAIN INTO THE QUARTZ CAUSE OF THE GAS DISCHARGE LAMP

The invention relates to structural elements of gas-discharge lighting lamps, namely to lead-in conductors and can be used in enterprises that produce gas discharge lamps with a quartz bulb.

Sealed current leads are known in a quartz flask containing foil5 Supplied with two thickened sections, to which internal and external current leads 1, respectively, are connected.

However, in this current lead, in order to increase the current load, it is necessary to increase the foil width C, the foil thickness is limited by the condition of obtaining a reliable hermetic seal, which leads to an increase in the transverse dimension of the current lead and the lamp as a whole.

The most intrinsic by technical nature of a pre-conditioner is a flat hermetic current lead containing a foil with thickened calls along the edges connected respectively to an internal and external current lead, and these zones are located along the entire length of the foil. With this design, it is possible to increase the current load on the input at a constant foil width, by slightly increasing the height of the stamped leg f 2.

A disadvantage of the known current source is the use of foil with thickened zones along the edges, for the manufacture of which special equipment is needed for rolling molybdenum of a complex profile. When this

Claims (2)

ts it is required to weld current leads to the indicated zones, which is also folded taking into account the fact that the zones and current leads have a significant cross section in the case of high-power lamps. All this (X) falsely fabricates the current lead and consumes its cost of production. In addition, if the rolled metal foil is oriented from one thickened 3 zone to another, it is quite likely that capillary cavities and scratches forming on the foil from one thickened zone to another form during rolling. in the direction of current flow, after foil and quartz are soldered, the likelihood of leakage along these capillary channels appears (since the thickened zones are not tightly connected to quartz, one of them is connected to the external atmosphere through the current lead and the other to the internal volume of the bulb). This reduces the reliability of the current lead and the lamp as a whole. The purpose of the invention is to simplify the manufacture of current lead and increase reliability during operation. To achieve this goal, in an airtight current lead to a quartz flask of a gas discharge lamp containing a flat foil, along the side edges of which along the entire length there are zones connected to the foil of the external and internal current leads these zones are formed by two metal wires attached to the foil along the entire length and current-carrying current, and the direction of rolled foil is parallel to the axis of the current lead. With a chain of more reliable connection with the foil, the indicated wire can be partially flattened. FIG. 1 shows the proposed current lead, a longitudinal section; in fig. 2 shows section A-A in FIG. 1. The current lead contains flat molybdenum foil 2 stamped in a quartz leg, welded along the edges by spot welding using a tantalum gasket to a partially flattened molybdenum wire 3, the continuation of which, coming out of the leg 1, is connected to the external output, and the same wire 4, the continuation of which is the entrance to the internal volume of the lamp and is connected to the electrode .. The direction of the foil 2 is parallel to the axis of the leg 1, so that possible capillary channels 44 in the junction cannot connect untight ones welding wires 3 and 4 to the foil 2, In the manufacture of the proposed current lead foil applied standard, commercially available, wherein the welding step is eliminated utolschennEm current leads to zones of the foil, for preparation of a current lead that simplifies and reduces the cost of the lamp and the legs as a whole. Elimination of the possibility of leakage through the capillary channels in the junction is the reliability of the lamp during its operation. Compared with the cylindrical current leads, common in high-power lamps, the amount of manual labor in the manufacture of the proposed current lead can be significantly reduced as the proposed leg is made by stamping, which is mechanized. The formula is invented 1. A sealed current lead to a quartz flask of a gas discharge lamp containing flat metal foil, for example, molybdenum, on the side edges of which there are external and internal tokogvadov connection zones, all with the aim of simplifying the manufacture of current lead and commands to its reliability, these zones are formed by two metal wires attached to the foil along the entire length and are simultaneously the current leads, and the direction of rolling the foil is parallel flax length of the current lead. 2. The current lead according to claim 1, is distinguished by the fact that the metal wire is partially flattened. Sources of information taken into account in the examination. U.S. Patent 3,548,248, Cl. 313-331, publ. 1973. 2. USSR author's certificate No. 680084, cl. H 01 J 61/36, 1976. /) t / e. / d ±. g / / /    at y / v x t t (/ r. 2