Abstract:
An incandescent lamp including a lamp vessel with a pinch seal at one end, at least one incandescent filament being accommodated in the interior of said lamp vessel, the incandescent filament being fixed in position in the lamp vessel by at least one electrically insulating holding element provided with filament holders wherein the holding elements are held in the lamp vessel by sections of said lamp vessel being subjected to hot shaping.
Abstract:
Manufacturing equipment and manufacturing process steps that improve upon prior art processes for the manufacturing of filament tube and arc tube light sources, their components and subassemblies, and lamps employing said light sources. A double ended, tipless filament tube or arc tube light source incorporates a drawn-down tubular body, and one piece foliated leads with spurs for process handling and for spudding into a filament with stretched-out legs. Bugled ends on the body provide a novel cutoff means, facilitate a flush-fill finishing process, and enhance mounting and support of the light sources in lamps. The foliated leads are made from a continuous length of wire in a process including foil hammering and two-bath AC electrochemical etching. Cost-reduced light source and lamp production enables affordable household consumer lamps, even when containing two series-connected halogen filament tubes. Safety benefits ensue from series connection, especially in combination with disclosed body and filament constructions.
Abstract:
Manufacturing equipment and manufacturing process steps that improve upon prior art processes for the manufacturing of filament tube and arc tube light sources, their components and subassemblies, and lamps employing said light sources. A double ended, tipless filament tube or arc tube light source incorporates a drawn-down tubular body, and one piece foliated leads with spurs for process handling and for spudding into a filament with stretched-out legs. Bugled ends on the body provide a novel cutoff means, facilitate a flush-fill finishing process, and enhance mounting and support of the light sources in lamps. The foliated leads are made from a continuous length of wire in a process including foil hammering and two-bath AC electrochemical etching. Cost-reduced light source and lamp production enables affordable household consumer lamps, even when containing two series-connected halogen filament tubes. Safety benefits ensue from series connection, especially in combination with disclosed body and filament constructions.
Abstract:
An incandescent halogen lamp used in connection with a vehicle headlamp system in which stray light attributable to reflection off of internal lamp components is reduced while the structural integrity of the lamp is maintained. The halogen lamp includes two filaments, several lead wires, and a support bridge all sealed within a glass envelope. Each filament is connected at its outermost end to a flattened end portion of a lead wire which extends along the length of the filament from near the support bridge to the upper end of the filament. The flattened outer ends of the lead wires have a narrow profile that is in alignment with the direction of illumination of light from their respective filaments. This arrangement reduces the surface area that could otherwise interfere with light emitted by the filaments, and thereby reduces the overall stray light produced by the lamp. The flattened outer ends can have a roughened surface to further help reduce the amount of light reflected off the lead wires.
Abstract:
A method of making glass beads for current leading-in wires of lamps by internal and external high-frequency heating of a glass tube which surrounds a metal rod.
Abstract:
A halogen incandescent lamp comprising a transparent sealed bulb (2), a gas filling comprising an inert gas and a halogen additive, a luminous element (4) which is attached to a current supply system (7, 8, 9) extending in a pinched portion (3) of the bulb, and a mount (5, 9, 10, 11, 12, 13) extending from at least adjacent the outside of the pinched portion (3) into the bulb (2) and comprising at least one metal support wire (5) which retains the luminous element (4) in the vicinity of the end of the bulb (2) remote from the pinched portion (3), wherein the mount (5, 9, 10, 11, 12, 13) comprises a non-conducting part (9, 10; 12) such that the outer end of the part (11; 12) of the mount (5, 9, 10, 11, 12, 13) at or near the outside of the pinched portion (3) and the support wire (5) are electrically insulated from each other.
Abstract:
The electric lamp has a lamp vessel (10) having a pinch (12) mounted in an outer envelope (1) by means of a clamping member (20) of metal sheet which is present on the pinch (12). The clamping member (20) has an open loop (21) which extends in a direction transverse to the broad side faces (13, 14) of the pinch (12). A still open clamping member (20), when present around the pinch (12), can easily be fastened by plastically deforming a specified region of the member by the method of the invention.
Abstract:
An incandescent halogen lamp used in connection with a vehicle headlamp system in which stray light attributable to reflection off of internal lamp components is reduced while the structural integrity of the lamp is maintained. The halogen lamp includes two filaments, several lead wires, and a support bridge all sealed within a glass envelope. Each filament is connected at its outermost end to a flattened end portion of a lead wire which extends along the length of the filament from near the support bridge to the upper end of the filament. The flattened outer ends of the lead wires have a narrow profile that is in alignment with the direction of illumination of light from their respective filaments. This arrangement reduces the surface area that could otherwise interfere with light emitted by the filaments, and thereby reduces the overall stray light produced by the lamp. The flattened outer ends can have a roughened surface to further help reduce the amount of light reflected off the lead wires.