DE7122367U - ELECTRIC LIGHT BULB, IN PARTICULAR HALOGEN LIGHT BULB WITH A QUARTZ GLASS VESSEL AND AN EXTERNAL CRUSH - Google Patents

Description

Patent-Trcuh & nd-Gesellschaft für electrical Glühlarapen mbH, Munich

"Quartz g ¹ crushing with increased compressive strength" *)

The innovation relates to an electric incandescent lamp, in particular one Halogen incandescent lamp with a quartz glass vessel and an external pinch formed as a base. Power leads are in the pinch Form of foils melted down, with the external power supply wires emerge at the end as base contacts, while the internal power supply wires protrude into the bulb space and are connected to the luminous element. With these quartz pinches, a bursting or bursting often occurs due to a lack of compressive strength at the end of the lamp's service life Air the lamp on.

In order to avoid this deficiency, in particular, during manufacture the corresponding squeeze, pressure and burner settings changed in order to achieve greater compressive strength. this has not yet led to a satisfactory result, and it is therefore necessary to manufacture a lamp with a pinch seal which has the does not have the above defects.

According to the innovation, an electric incandescent lamp, in particular a halogen incandescent lamp with a quartz glass vessel and an external pinch, is the from a flat medium delimited by two flat parallel surfaces part and two these enclosing flanges extending parallel to the lamp axis, so that their cross-section is perpendicular in a plane is I-shaped to the lamp axis and melted into the pinch Power supply lines are provided in the form of fused metal foils

^{21 f} 7-10OQCT

and the external power supply wires emerge from the face of the pinch as socket contacts, characterized in that the pinch has a bead across the whole pinch immediately at the transition to the piston.

The new gema'ße quartz glass squeezing is described with reference to the following figures .

Figure 1 shows the pinch in the front view.

FIG. 2 shows the pinch in section along the line AB in FIG.

Figure 3 shows the view from below of the pinch.

The quartz glass pinch shown in FIGS. 1 to 3 of a halogen incandescent lamp ( not shown) with a quartz glass vessel 1 has an I-shaped cross section perpendicular to the lamp axis , as can be seen in FIG. 3 * u . The pinch is formed by a central part delimited by two flat, parallel surfaces , the web 2 and the flange 3 enclosing it and running parallel to the lamp axis. The flanges 3 go over steps 4 into the web 2, whereby the large difference in thickness between the web and flange is bridged . In the web, the power supply lines in the form of metal foils 5 with the inner 6 and outer 7 power supply wires are melted, the outer power supply wires 7 emerging from the end face 9 of the pinch as sock contacts. At the transition from the pinch to the piston 1, a bead 8 is provided across the entire pinch, delimited by the two flanges. A corresponding design of the pinch jaws increases the pinch pressure at the point of the bead 8 compared to the other parts of the pinch , resulting in an increased cold pressure resistance of at least 20 atmospheres, which prevents the lamp from bursting or drawing air.

- right to protection -

Claims (1)

Claim to protection Z - Electric incandescent lamp, in particular halogen incandescent lamp with a quartz glass vessel and an external squeeze, ~ Üe from a flat, through two consists of flat, parallel surfaces delimited central part and two flanges enclosing this, running parallel to the lamp axis, so that its cross-section is I-shaped in a plane perpendicular to the lamp axis and shaped with power feeds melted in the pinch is provided by metal foil seals, the outer flow feed wires of which ajts socket contacts emerge from the face of the pinch, characterized in that the pinch immediately at the transition to the piston has a bead (8) across the entire pinch width having. He / Wg.