AN APPARATUS FOR FASTENING THE BURNER OF A DISCHARGE LAMP

摘要

The invention relates to an apparatus (2, 3, 4) for fastening the burner (1) of a discharge lamp to a housing or plug portion, comprising a sleeve (3) to be clamped around the outer bulb (12) of the burner (1) and an annular base (2) which can be fastened to the housing or plug portion of the electronic ballast unit and which has at least three tabs (24) that are orientated in the direction of the center point of the annular base (2)and may be biased against the sleeve (3). The tabs (24) are inclined at an angle through an opening of the base (2), so that in the mounted condition of the burner (1), they rest against the sleeve (3) below a surface of the annular base (2). Furthermore the invention relates to a discharge lamp including a burner, the outer bulb (12) of which is provided with a sleeve, via which the outer bulb (12) is fastened to a housing or plug portion of an electronic ballast unit by means of an annular base, with tabs integrally moulded onto the base being spring-biased against the sleeve and being welded onto the same. The tabs (24) are bent through the circular opening of the base (2) and rest against the sleeve (3) below the surface of the base (2). The invention also describes a method of fastening the burner (1) of a discharge lamp to a housing (4) or plug portion of an electronic ballast unit, which method comprises clamping a sleeve (3) around an outer bulb (12) of the burner (1); and fastening the burner (1) in a base (2), which base (2) can be fastened to the housing (4) or plug portion, by means of at least three tabs (24) arranged on the base (2) in the direction of a center point of the base (2), such that the tabs (24) are inclined at an angle through an opening of the base (2) and may be biased against the sleeve (3) so that, in the mounted condition of the burner (1), they rest against the sleeve (3) below a surface of the base (2).