Osram Gesellschaft MIT Beschraenkter Haftung

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Ag

Osram Gesellschaft MIT Beschrankter Haftung

Osram Gmbh

Patent-trewhand-gesellschaft Für Elektrische Glühlampen Mbh

Joachim Arndt

Uwe Fidler

Markus Herb

Ralph Hauschild

Jürgen Gräf

Anton Schlögl

Bernhard Zöllner

Gunter Kullik

Matthias Lenz

Jürgen Waldmann

In various embodiments, a high-pressure discharge lamp is provided. The high-pressure discharge lamp may include a discharge vessel which is accommodated in a tubular outer bulb, wherein a major part of the outer bulb is closely surrounded by a transparent sleeve composed of highly heat-resistant plastic.

Enclosed high pressure discharge lamp

A lamp with a base at one end, in particular a high-pressure lamp, with a light bulb sealed in a vacuum-tight fashion, with the latter being surrounded by an outer bulb and an enveloping part, with a base supporting firstly the outer bulb and secondly the enveloping part, having the following features:

Lamp with a base at one end

Various embodiments provide an electric high-pressure lamp with a base at one end, with a wattage of at most 100 W and with a discharge vessel which is sealed in a vacuum-tight manner, said discharge vessel being surrounded by an inner bulb and furthermore by an outer bulb, a base with electrical terminals supporting the outer bulb on one side and the inner bulb on the other side, wherein an effective axial length of the inner bulb is defined as the length of said inner bulb without the ends, with the following geometrical relations with respect to the length being maintained: the volume VH of a hollow cylinder extending between the inner bulb and the outer bulb is given by 8 cm&#x2266;VH&#x2266;15 cm; the impact quality IG, defined as the product of the clear width between the inner bulb and the outer bulb and the square of the wall thickness of the outer bulb, in each case calculated in mm, is at least 8 mm, with the result that the following applies: 8&#x2266;IG.

The light unit comprises a light source and a reflector. The light source is surrounded by an exterior pipe. Spring clips with a centering effect for the exterior bulb of the light source are anchored at the open end of the exterior pipe.

Light unit

The invention relates to a light unit, comprising a concave reflector () with an outlet opening and an axis, whereby the reflector encloses a light source running in the direction of the axis. The light source is enclosed at a separation from an open-ended cylindrical protective tube (), with a glare shield (), provided at the open end of the protective tube. The glare shield () is a sheet, cupped over the burst-protection tube, whereby the glare shield comprises a semi-circular end piece with a given maximum diameter, on which a straight cylindrical section of greater diameter is mounted which itself is further provided with an offset screen ().

Light unit provided with reflector

A light bulb () with a base and inner vessel sealed in a vacuum-tight manner and surrounded by an enveloping part is provided with an adapter () at the end thereof made from ceramic polymer and fixed in a base insulator (). The base insulator and the enveloping part are fastened to each other. The base insulator may be provided in pieces which fasten together and hold the adapter. The adapter allows cementless fastening of the inner bulb. The base insulator and the adapter part have matching indexing and mating indexing means for holding the base insulator and the adapter part in position relative to each other. Multiple mating indexing means on the base insulator allow the adapter to assume secure position at multiple heights relative to the base insulator.

Uncemented socketed lamp

Lamp

A holding device for fixing a lamp bulb comprises at least one clip element, the clip element, referred to as the main clip, having a peripheral flange as a supporting surface, which is adjoined at its inner rim by a peripheral side wall with a given height H, which is preferably cylindrically shaped, its free end forming a closing-off cover, the cover having a clearance which is adapted to the portion of the lamp bulb that is to be fixed.

Holding device for fixing a lamp bulb and associated lamp

Electric light bulb

Electric lamp with a base at one end, having an inner vessel surrounded by an outer jacket, a base with electric connections supporting the inner vessel and the outer jacket, having the following features:

Lamp with single-sided socket

An electric lamp having a base at one end, a lamp bulb sealed in a vacuum-tight manner, the lamp bulb being surrounded by an envelope part, a base having electrical connections bearing on one side the outer bulb and on the other side the envelope part, having the following features:

High pressure electric lamp having a base at one end

Reflector lamp

High-pressure lamp with a base, having an inner vessel sealed in a vacuum-tight manner, and surrounded by a sleeve part, a base having electrical terminals bearing, on one side, the inner vessel and, on the other side, the sleeve part, the reflector being of rotationally symmetrical design, and having a contour divided into at least two zonal layers, whose axial height is dimensioned such that each zone captures at least 35% of the light intensity emerging from the center of the inner vessel, and a first zone reflecting back at least 90% of the light incident on it at positive angles in relation to the lamp axis, and a second zone reflecting back at least 90% of the light incident on it at negative angles in relation to the lamp axis, and the inner vessel containing a metal halide filling, and the lamp having a specified average color temperature.

Growing community of inventors

Brieselang, Germany

Joachim Arndt