Electric lamp and associated production method
View Patent ↗In various embodiments, a lamp has a bulb with a pinch seal, which holds a light-emitting element by means of a wire clip. The wire clip consists of tungsten and has, at an end remote from films embedded in the pinch seal, an eyelet for holding the light-emitting element. An end of the wire clip which is close to a film is bent back. A film associated with the wire clip is folded in a roof-shaped manner. Overall, it is thus possible to realize a lamp with a long life.
1. An electric lamp having a longitudinal axis, wherein the electric lamp is provided with a pinch seal; said pinch seal having two narrow sides and two broad sides, and wherein the electric lamp has a bulb consisting of quartz glass equipped with said pinch seal and films fitted therein, in which bulb a light-emitting element is held at the ends of said light-emitting element by a frame, wherein the frame has at least one wire clip, which holds an end of the light-emitting element which is remote from the films, wherein the wire clip is manufactured at least partially from tungsten and is bent back at an angle at a film-side end of said wire clip, and wherein a film associated with the wire clip is folded in the form of a V along the longitudinal axis, and a film associated with the light-emitting element is planar.
2. The electric lamp of claim 1 , wherein the folding of the film associated with the wire clip is performed in the center, and wherein the angle of the fold has a value in the range of 5° to 15°.
3. The electric lamp of claim 1 , wherein the film-side end of the wire clip is bent back through 30° to 60° with respect to the longitudinal axis.
4. The electric lamp of claim 1 , wherein that end of the wire clip which is remote from the films is bent back with respect to the longitudinal axis through an angle of from 75° to 105°.
5. The electric lamp of claim 1 , wherein that end of the wire clip which is remote from said films is bent back, wherein an end piece of the wire clip is formed as a coil comprising a plurality of turns, which coil is matched to that end of the light-emitting element which is remote from said films, outwardly as an eyelet.
6. The electric lamp of claim 5 , wherein the eyelet is formed from 4 to 8 turns of the coil.
7. The electric lamp of claim 1 , wherein the light-emitting element is inclined with respect to the longitudinal axis through 5° to 20°, wherein a film-side end of the light-emitting element is fastened on one of said films in the pinch seal.
8. The electric lamp of claim 1 , wherein the electric lamp is configured as built-in lamp which is surrounded by an outer vessel, said outer vessel being fastened to a lamp base.