Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Patent-treuhand-gesellschaft F. Elektrische Gluehlampen Mbh

Patent-treuhand-gesellschaft

Hermann Steiner

Peter Helbig

Walter Schonherr

Alfred Braun

Gerhard Behr

Walter Schoenherr

Christian Wittig

Hans Wild

Werner Bernhard

Ulrich Lindenmaier

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 (,) have a plane contact surface (,) for soldering onto a printed circuit board, a section (,) which is constructed like tongs and serves to anchor the base contact (,) in the lamp base, and a hookshaped section (,) into which one end of a supply lead (,) guided out of the lamp bulb (,) is inserted, and to which said supply lead (,) is welded.

Miniature filament lamp having planar contact surfaces arranged on the plane bottom surface of the base

Electric lamp

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).

Electric lamp with mechanical connection

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.

Compact low-pressure discharge lamp with conductive spring element

Electric vehicle lamp with inserted insulation plug

Electric lamp with cement-free base and metal/plastic reflector-type

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. Support tabs (21, 20b) fitting against the pinch seal in the region of the guide ribs, are formed with recesses (24a, 24b), which are wider than the width of the guide ribs, and also laterally staggered and offset so that the rib-and-recess combination provide for reliable lateral positioning of the lamp in the base, by laterally positioning the pinch seal in the base, and, further, ensuring that the seal cannot cant upon insertion of the lamp in the base. The ribs and recesses can be so arranged to form, respectively, right and left lateral abutment and support surfaces.

Halogen incandescent lamp in cementless base

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. The sleeve (11), preferably, is made of plastic, and made circumferentially resilient by forming one or more axial slits, for example in pairs, extending from opposite ends of the sleeve, so that, upon compression for example due to conical surfaces of the sleeve (11) and/or the bore (10), the sleeve will be essentially circumferentially uniformly reduced in diameter and engage on or into the insulation jacket (12) of the connecting cable (6).

Single-based electric lamp base structure with connecting lead strain

To permit rapid adjustment of a holder structure (4) within which a singlnded pinch-sealed light source, for example a halogen incandescent lamp (1, 2) is retained, to a positioning or locating element having an optical reference surface (17a) to accurately align the light emitting element (2) of the light source with respect to an optical system, for example a reflector, a tubular adjustment sleeve (10) is provided into which the holder structure is fitted. The tubular adjustment sleeve has an essentially cylindrical portion (11) and a slightly conically converging portion (12) or an inwardly extending rim or ring (12') to permit rotational, axial and tilting adjustment of the holder structure to which the light source (1) is coupled with respect thereto. The tubular sleeve is formed with a laterally projecting flange (14, 14a) formed with a plane, burr-free engagement surface (14b) which fits against an auxiliary plane, flat reference surface (18b) on the positioning or locating element (15). The holder structure (4), the adjustment sleeve ( 10) and the positioning or locating element (15) are all formed of sheet metal and, after appropriately positioning the lamp with respect to the optical reference surface (17a) of the holder structure, the metallic elements are welded together, preferably by non-contacting, for example laser welding, to thereby provide for rapid manufacture of accurately aligned light sources with respect to the optical reference surface (17a).

Electric lamp and optically alignable cementless base combination

To improve shock and vibration resistance and heat dissipation of an attaent element (1) coupling the pinch seal (3) of a halogen incandescent lamp (2) to a plastic base (6), the attachment element is formed of two identical half-sections, surrounding the pinch seal in the shape of a cuff (4) and connected to a flange or skirt by an intermediate heat dissipation and shock absorbing portion (7, 11, 12, 13, 14). Preferably, the intermediate portion forms a connecting section, which can be bent into U or double U configuration off the upper region of the flange or skirt portion (8a, 8b), to provide a large heat radiating surface while retaining the pinch seal of the lamp between undulating sheet-metal portions. Preferably, the attachment element is made of unitary sections of high-quality specialty steel.

Vibration, shock and heat-resistant lamp-base combination structure

To permit ready attachment of a pinch or press seal terminating a halogen incandescent lamp, particularly for automotive use, a base sleeve (9), for example of steel, is formed as a hollow cylinder having, at the end remote from the bulb, at least two spaced flange elements (28) extending radially inwardly of the sleeve and essentially at right angles to the axis of the lamp. A base plug element, formed as a solid body, for example of highly heat-resistant plastic material, is located projecting from the base sleeve, and positioned remote from the bulb. The essentially cylindrical solid body (29) is formed with a circumferential collar of smaller outside diameter, and separated from the remainder of the solid body by a circumferential ring groove. The collar (30) is subdivided into a plurality of circumferential projections (31, 32), at least two of said circumferential projections are formed with radially outwardly extending holding projections (33) which engage behind and around the flange elements of the base sleeve (9) upon relative rotation of the base sleeve and the plug element formed by the essentially cylindrical solid body ( 29). A metallic holder element (7) surrounds the pinch or press seal and has extending leg or apron portions which are metal-to-metal welded, for example spot-welded to the base sleeve (9).

Cementless lamp bulb and base combination

The bulb (1) of an incandescent lamp, such as a vehicular headlight, is mted on a base structure (3) without cementing, by means of a securing element (2) having two shell-shaped halves (4). Each half (4) has a lug (5) on one side and bent tabs (6) on its other side which engage the lug (5) of the other half (4) to form a cuff around the pinch seal of the lamp and to connect the lamp to the base structure (3), which may be made of plastic. Each half (4) has a flange (8) with a projecting rim (10) whose curvature matches that of a tubular base structure (3). The projecting rim (10) has perforations (9) so that, if a plastic base structure (3) is used, the rim (10) can be connected to the base structure (3) by high-frequency heating, which causes the plastic to permeate the perforations (9) and harden therein.

Lamp with cement-free base structure

To permit insertion of a lamp-socket combination into a fixture which includes a plate-like portion (P), for example a printed circuit board, a plastic socket (2) is provided which is formed with a recess (6), preferably a through-bore, into which two separating walls (8) extend, which are resiliently outwardly deflectable and have inwardly extending locating ridges (9) which can, after deflection radially outwardly upon insertion of the lamp (1), snap back against the base (4) of the lamp to engage over locating projections (5) formed on the base of the lamp. Terminal strips (7) are inserted in the base at the opposite sides of the separating walls (8), which defines chords of the cylindrical opening (6), the opening providing access for weld-connection of the electrical terminal leads (3) from the lamp to the terminal strips (7).

Halogen incandescent lamp and socket combination, particularly for

To provide for cementless attachment of a halogen cycle incandescent bulb ) to a positioning ring (2) formed with a flange-like extension (6a) and a generally sleeve-like projection (6), the press stem (5) of the lamp is placed in a stem holder (1) which has a sleeve-like portion, fitted between lugs (11) extending in the direction of the sleeve-like portion of the positioning ring, the lugs being welded to the stem holder at selected circumferential positions. Assembly, alignment and adjusment of this structure is facilitated with respect to structures in which lugs are bent-over at right angles from a base holder.

Dual filament halogen cycle automotive-type incandescent lamp

To permit introduction of a halogen incandescent lamp into a reflector, in ealed relationship thereto, a plastic end portion (2c) of the base (2) of the lamp is secured to a metal sleeve, for example of steel, which is telescopically connected to an adjustment cap (2a) in which the bulb (1) is seated. After adjustment of the position of the bulb, so that the filaments will emit light in a predetermined pattern with respect to the base, the adjustment cap and the sleeve are welded together. The plastic portion includes a groove (9) in which a sealing ring (10) for example of silicone rubber is placed, the plastic element including therebeyond a positioning or seating flange (11). The plastic end portion, thus, can readily be assembled with a glass reflector, the sealing ring (10) providing for a moisture tight seal against, for example, a glass reflector.

Growing community of inventors

Herbrechtingen, Germany

Hermann Steiner