General Electric Company

Tungsram Reszvenytarsasag

Akos Ocsovai

Jozsef Fulop

Ferenc Papp

Istvan Wursching

Jozsef Tokes

Sandor Lukacs

Erzsebet Cserteg

Gyorgy Szabo

Zoltan Losonczi

Gyula Busai

Zoltan Vamos

Kalman Antal

Istvan Pozsonyi

Jozsef Frank

Zoltan Szanto

Gyorgyi Vegh

Gyorgy Vajo

This invention relates to compact fluorescent lamps, and, more particularly, to the construction of connections inside the compact fluorescent lamp. The compact fluorescent lamp has a base (24), the base is connected to a housing (26) including a ballast circuit (18). The housing (26) is separated from the fluorescent tube (28) by a cap (20) on the side of the housing opposite to the base (24) and current feedthrough wires (2, 4) protrude from the fluorescent tube (28) inside the housing (26). The electrical connections between the current feedthrough wires (2, 4) and the lead-out wires (3, 5) of the ballast circuit and/or the junction lead-out wires of the base (24) are made by welding the corresponding wires together through metal connection elements (14).

Compact fluorescent lamp with internal connections

Plastic housing and screw base construction for compact fluorescent lamps and electrical operating units thereof comprising a base (2) including a metal screw base shell (20) with a thread-free opening portion (22) and a plastic housing (1). The plastic housing (1) has a neck part (10) which is a body of rotation with central axis (O). The neck part comprises a cylindrical or slightly conical mantle portion (12), which starts from a stop shoulder (11), and a shell (13) which connects to the mantle portion (12) and which has an open end and diameters decreasing in at least one step. The base (2) is pushed over and fixed to the neck part (10) of the plastic housing (1). A lead wire (3) is passed through from the inner space of the plastic housing (1) between the thread-free opening portion (22) of the base shell (20) and the mantle portion (12) of the neck part (10). A rib (14), which protrudes in and has a front surface (15) perpendicular to radial direction, is formed on the mantle portion (12). A slot (16), which extends parallel to the central axis (O) and has a depth suitable for accepting a portion (30) of the lead wire (3) leaving the plastic housing (1), is indented into the front surface (15). A local protrusion (21) with an inner size and shape fitting to the rib (14) is made in the thread-free opening portion (22) of the base shell (20). The said portion (30) of the lead wire (3) is bent back towards the end of the base (2) and is fixed to the base shell (20) by resistance welding with a compression force exerted in radial direction from outside.

Plastic housing and screw base construction for compact fluorescent

Lamp base contact plate for connecting a current lead-in wire of an electric lamp to a contact part of a lampholder, which contact plate being a pressed metal part of the lamp base and having a through bore for the lamp lead-in wire, is fixed firmly on an electrically insulating insert closing the end of a shell of the lamp base. The through bore for the lamp lead-in wire is formed as a first perforated bore (12) with torn skirt (20) protruding from the plane (L) of the contact plate (10) in a direction away from the insulator insert (30), and the contact plate (10), in addition to this first perforated bore (12), also includes at least two further perforated bores (14, 16, 18), each having a torn skirt (22, 24, 26) protruding from the plane (L) of the contact plate (10) in a direction opposite to the direction of the torn skirt (20) of the first perforated bore (12), towards the insulator insert (30). The contact plate (10) is optionally also provided with a continuous rim (28) protruding in a stepped manner from the plane (L) of the contact plate (10) on the side of the torn skirt (20) of the first perforated bore (12) and being at least approximately parallel to the plane (L) of the contact plate (10).

Contact plate for bases of electric lamps

Plastic housing and base construction, especially for compact fluorescent lamps and operating units thereof comprising a housing (1) which is a cup-like body and a base (2) having a metal base shell (26) and at least one metal central (3) or end contact part (4, 5). The base shell (26) is electrically insulated from the central (3) or end contact parts (4, 5). The base (2) also includes a plastic insert body (20) which is open at its upper end and closed at least partially at its lower end. The diameters of the plastic insert body (20) decrease in at least one step and it has a cylindrical or slightly conical mantle portion (24) in the region of its upper end. The base shell (26) includes a thread-free opening portion (27) the inner diameter of which fits to the mantle portion (24) of and is pulled over and fixed to the plastic insert body (20). The metal central contact part (3) or each end contact part (4, 5) is fixed to the lower end of the insert body (20) which has a rim (22) at its upper end for connecting to the housing (1). The housing in turn has a connection end (11) for receiving the insert body (20).

Plastic housing and base construction especially for compact fluorescent

In an incandescent lamp, comprising a translucent envelope (2) having flattened end (3) of rectangular cross-section, a base element (5) surrounding the flattened end part (3) and having rectangular cross-section, two current lead-ins (7a, 7b) connected with an incandescent body (4) arranged within the envelope (2) and with the base element (5) and thereby with a connecting cable (8), a centering plate (6) with a rectangular opening for receiving the base element (5), wherein the centering plate (6) is made with at least one flange element (10) arranged on the side of the centering plate (6) not facing the envelope (2), the base element (5) being made with thinner plate than the centering plate (6), a locating body (9) stepwisely shaped for receiving the flange element (10) is applied, the locating body (9) made with thinner wall than the centering plate (6) is fixed on the base element (5), has an edge (14) separated from the base element (5) by a gap, wherein the edge (14) of the locating body (9) covers at least partly the at least one flange element (10) of the centering plate (6), the flange element (10) of the centering plate (6) is between the base element (5) and the locating body (9), further the flange element (10) of the centering plate (6) and the locating body (9) are connected by a thermal method of joining.

Incandescent lamp with mounting assembly

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Budapest, Hungary

Akos Ocsovai