Abstract: To ensure reliable electric contact, a discharge lamp has a tubular lamp vessel (1), a lamp base (4) and lamp electrodes (2, 3) which are applied to the wall of the lamp vessel (1) and in each case have an electrode section (20, 30) which is arranged outside the interior (11) of the lamp vessel (1) and serves as supply lead. The electric base contacts (5, 6) are connected in each case to an electrically conductive spring element (8, 9), each spring element (8, 9) bearing against the wall of the at least one tubular lamp vessel (1) and making an electric contact between in each case one electrode section (20, 30), arranged outside the lamp vessel (1), and a base contact (5, 6).

Abstract: An electric lamp, in particular a motor vehicle auxiliary light lamp, and a method for producing such a lam. The base of the lamp comprises an annular metal part (5) or resilient design for holding the lamp vessel (1), and a plastic part (6) provided with at least one hollow contact pin (7, 8). A supply lead (3, 4) projecting from the lamp vessel (1) is threaded into the hollow contact pin (7, 8) and welded to the latter such that the metal part (5) is under mechanical stress. In this way, backlash-free plug-and-socket connections are produced between the lamp vessel (1) and the metal part (5) or between the metal part (5) and the plastic part (6).

Abstract: An electric lamp with a base (6), which is structurally subdivided into an upper part (7) that retains the bulb and a substantially circular-cylindrical lower part (5) for external fastening, which lower part protrudes past the upper part, and the protruding portion (13) is embodied as a detent mechanism for the external fastening. The detent mechanism in each case includes an inward-facing detent protrusion (20) located on the outside, which is an integral component of the lower part, and a metal spring (24), located opposite the detent protrusion and cooperating with it, that is secured in the lower part.

Abstract: The invention relates to a double-filament halogen incandescent lamp for a motor vehicle headlamp. In order to reduce the light shading effects caused by the filament holder, at least one of the power supply wires (8) is provided with a section (8a) that projects out of the common plane of the power supply wires (7, 8, 9) and is guided past the main filament (5), this section (8a) being shaped such that light beams that are emitted by the main filament (5) perpendicular to its filament axis are not obstructed by the power supply wire (8).

Abstract: The invention relates to an electric lamp, in particular a motor vehicle auxiliary light lamp, and a method for producing such a lamp. The base of the lamp comprises an annular metal part (5) of resilient design for holding the lamp vessel (1), and a plastic part (6) provided with at least one hollow contact pin (7, 8). A supply lead (3, 4) projecting from the lamp vessel (1) is threaded into the hollow contact pin (7, 8) and welded to the latter such that the metal part (5) is under mechanical stress. In this way, backlash-free plug-and-socket connections are produced between the lamp vessel (1) and the metal part (5) or between the metal part (5) and the plastic part (6).

Abstract: The invention relates to an electric lamp, provided with a metal-plastic cap, for a motor vehicle headlight. In order to prevent maladjustment of the lamp, caused by the formation of burrs on the reflector (20), during installation in the mounting opening (21), designed as a lampholder, of the reflector (20), the lamp cap (14b) is fitted with depressions (14f) or cutouts so that any possible burr (22a2) on the edge (22a) of the mounting opening (21) is arranged free from contact with the lamp cap (14b, 15).

Abstract: The invention relates to an electric lamp, comprising a base (3) having at least two V-shaped fixing plates (5; 6) with a first (5a, 6a) and a second elastic V-shaped limb (5b; 6b). The ends of the first V-shaped limb (5a, 6a) are formed on the base (3). The first V-shaped limb (5a; 6a) forms a location (7) to accommodate a tappet-like holder or connector part and the ends of the second V-shaped limb (5b; 6b) arm configured as free ends. The inventive lamp can be used in a sealed headlight of a motor vehicle and on a carrier plate fitted with several lamp holders and forming part of the tail lights of a motor vehicle.

Abstract: The invention relates to a miniature incandescent lamp which is provided for mounting on a printed circuit board. According to the invention, the base contacts (7) have a plane contact surface (7a) for soldering onto a printed circuit board, a section (7b, 7c, 7d) which is constructed like tongs and serves to anchor the base contact (7) in the lamp base, and a hookshaped section (7e) into which one end of a supply lead (5) guided out of the lamp bulb (1) is inserted, and to which said supply lead (5) is welded.

Abstract: The invention relates to an electric lamp, provided with a metal-plastic cap, for a motor vehicle headlight, which has a pressing-on spring (100) which is arranged laterally on the lamp cap and serves to mount the lamp in the reflector opening, constructed as lamp holder, of the headlight. The lamp cap has a metal holder part for the lamp bulb, a metal annular carrier sleeve (14b) connected thereto, and a plastic cap part (15) in which the carrier sleeve (14b) is anchored. According to the invention, the annular carrier sleeve (14b) has two inwardly angled lugs (14d) between which the pressing-on spring (100) is arranged with a clamping fit, and which are crossed with the ends (104a) of the pressing-on spring (100).

Abstract: The invention relates to an electric lamp, the cap (3) of which has at least two resilient tabs (8), which are each provided with a latching lug (8a), and an attachment ring (6), which is mounted so that it can rotate about its ring axis, the tabs (8) bearing against the inside of the attachment ring (6) with a clamping fit, and the inside having wall areas which are at different distances from the ring axis. By rotation of the attachment ring (6), pressure is exerted on the tabs (8) and the latching connection of the latching lugs (8a) in the lamp holder is released.

Abstract: The invention relates to a pulse starting device and a starting method for a discharge lamp, in particular a high-pressure discharge lamp for a motor vehicle headlamp. The starting device has a transformer which has either two primary windings which are connected in parallel and are both coupled inductively to the at least one secondary winding, or instead has a primary winding which consists of a wide metal strip and is wound, separated by an electric insulation, over the at least one secondary winding. The starting device according to the invention has a compact design which permits the complete starting device to be accommodated in the lamp cap.

Abstract: The invention relates to an electric lamp, more particularly to a lamp for motor vehicle, the cap of which is provided with a metal support sleeve (53) constructed in the shape of a ring and at least one pressure spring (1) for securing the lamp in the lampholder. The at least one pressure spring (1) is constructed as a cambered leaf spring whose ends (11, 12) bear against the inner wall of the support sleeve and which has a V-shaped region (100) which reaches through a cutout (53b) in the support sleeve (53).

Abstract: The invention relates to an ignition apparatus for a discharge lamp, in picular high-pressure discharge lamp for motor vehicle headlights. The ignition apparatus, which is preferably designed as a pulse ignition device, is accommodated in the lamp base. According to the invention, it has; a plate (1), which is composed of an electrically conductive material, is matched to the geometry of the base and on which at least the ignition capacitor (C1) and the spark gap (F1) are fastened, at least one first electrical connection of the ignition capacitor (C1) and at least one first electrical connection of the spark gap (F1) being electrically conductively connected to the plate (1).

Abstract: The invention concerns an electric lamp, particularly a high-pressure disrge lamp or halogen bulb with a base on one side for a motor-vehicle headlight. The base of the lamp of the invention has a base sleeve (110) comprised of an electrically insulating material and a mounting element (111) also comprised of an electrically insulating material, which bears lamp bulb (116) and which is joined with base sleeve (110). According to the invention, a metal part (121) is anchored in mounting element (111) and a metal ring (122) is anchored in base sleeve (110), whereby metal ring (122) is equipped with several shaped spring-type weld lugs (122), which are welded with metal part (121) anchored in mounting element (111).

Abstract: The invention relates to a compact low-pressure discharge lamp comprising a discharge vessel 14 having electrodes and supply leads 30, and having a mp cap 12 assembled from a cap 16, housing 18 and mounting plate 24 with a ballast arrangement. In this case, the mounting plate 24 with the ballast arrangement is fitted in the interior of the lamp cap housing 18. The mounting plate 24 also has terminals 26 for the electric connection of the supply leads 30. According to the invention, in this case the supply leads 30 are connected to the electric terminals 26 of the mounting plate 24 via an electrically conducting spring element 28 in each case.

Abstract: An electric lamp may be formed with a lamp bulb, with lead wires leading out from the lamp bulb and with a base which incorporates a connection region made of electrically insulating material and provided with electrical connections. The connection region includes a cavity into which at least one lead wire of the electric lamp projects, and at least one electric connection of the base is formed by a contact lug which projects into the cavity in an electrically conducting manner with a lead wire of the lamp. A shaped part consisting of heat-resistant, elastic material is located in the cavity of the connection region. The shaped part has one or more passages for each lead wire of the electric lamp. The shaped part sits on a contact lug and abuts the wall delimiting the cavity in a press fit, and the lead wires pass through the shaped part.

Abstract: The invention relates to an electric lamp based without cement, for instation in a reflector which is provided with an opening (17a) and made in the reflector wall (17). The lamp has a metal/plastic base which has a metal holder part (12) in which the bulb (10) of the lamp is fixed, a metal support sleeve (13) which is connected to the metal holder part (12), and a plastic base part (14) which is provided with the electrical connections (15) of the lamp and in which the support sleeve (13) is anchored. The lamp base has a plurality of reference lugs (14a), lying in a plane, which are used for holding and for correct installation of the lamp in the reflector. According to the invention, the plastic reference lugs (14a) are covered by metal cover tabs (13b) so that reference lugs (14a) are screened against the electromagnetic radiation generated by the lamp, or alternatively the reference lugs (43b) are made of metal.

Abstract: The lamp according to the invention has a metal holder part 2 with a rece in which the pinch seal 10 of the lamp bulb 1 is clampingly fixed with the aid of a plurality of support tabs 21a, 21b, 22a, 22b, 23a, 23b. In order to reduce the danger of damage to the pinch seal 10 when the lamp is being mounted on its base, the pinch seal 10 is tapered is graduated fashion toward the base, and all the support tabs 21a, 21b, 22a, 22b, 23a, 23b that act upon the pinch seal 10 are oriented toward the broad sides of the pinch seal 10, which is substantially rectangular in cross section, while the narrow sides of the pinch seal 10 are located in the holder part 2 without touching it. The narrow sides of the pinch seal (10) are retained in the holder (2) spaced from the holder. Guide ribs (50a, 50b) are formed on the pinch seal (10) positioned off-center, and laterally relatively staggered.

Abstract: To reliably and simply connect one end of a double-ended discharge vessel it (1) and a surrounding envelope (11) to a base (8), the base has a base sleeve (8a) which encloses a base holder portion (8b). The envelope (11) is melt-connected to the discharge vessel unit (1), for example just beyond pinch seals formed thereon, and is additionally formed with an extension (11a) which is, in turn, melt-connected to the holder portion (8b) of the base. Preferably, a metallic cuff is placed within the holder portion so that, by high-frequency inductive heating, a reception region (8d) of the holder portion can melt and tightly grip the extension (11a) of the envelope. To improve adhesion, the surface of the extension region (11a) may be ribbed, knurled or otherwise, slightly deformed.

Abstract: To provide a strain relief in a base for an electric lamp, adapted for coction to an external electrical energy source by at least one connection cable (6a, 6b) extending through and into the base, the base (2) is formed with a strain relief arrangement which includes a resilient sleeve (11) having an inner wall surrounding the at least one connection cable and, within the base bottom portion (9, 9'), a sleeve reception structure (9a) positioned inwardly of the bottom of the base, which includes a sleeve reception bore (10a, 10b) receiving and surrounding the resilient sleeve (11a, 11b) and exerting circumferentially uniformly, radially inwardly directed forces on the resilient sleeve. This decreases the diameter of the sleeve so that the inner wall thereof engages, clamps and squeezes the deformable insulation of the at least one connection cable and, also, can interengage or interlock therewith. The bottom portion (9) and the top portion (7) of the base are snapped together.