Abstract:
This invention describes a method for manufacturing a conductive connection of a metallic electrode wire (1) and a metallic lead-in wire (3) for a gas discharge lamp (11), preferably a ceramic discharge metal halide lamp. The method includes a bending step, whereby an end portion (4) of the lead-in wire (3) is bended and folded over such that a first section (15) of the end portion (4) at the tip of the lead-in wire (3) overlaps a second section (16) of the end portion (4). Furthermore, the method includes the placement of the electrode wire (1) in-between the first section (15) and the second section (16) of the folded-over end portion (4) of the lead-in wire (3). Finally, a connection is formed between the electrode wire (1) and the lead-in wire (3) by stamping at least parts of the folded-over end portion (4) of the lead-in wire (3) while heating at least a part of the lead-in wire (3) such that the first section (15) and the second section (16) of the folded-over end portion (4) are at least partially touching a portion of the electrode wire (1). Furthermore, the invention describes a gas discharge lamp (11), comprising a conductive connection of a metallic electrode wire (1) and a metallic lead- in wire (3) and a corresponding manufacturing system (50).
Abstract:
A hermetically sealed lamp having at least one end-to-end seal. The end-to-end seal may be a material diffusion bond, a seal-material bond, or any other suitable bond. For example, the hermetically sealed lamp may have one or more endcaps butt-sealed to an arc envelope, such as a ceramic tube or bulb. The hermetically sealed lamp also may have one or more tubular structures, such as dosing tubes, which are butt-sealed to the endcap and/or arc envelope. Localized heating, such as the heat provided by an intense laser, also may be used to enhance any of the foregoing bonds.
Abstract:
The electric lamp (1) has a lamp vessel (2), wherein an electric element (3) is accommodated. Said element is connected to current conductors (4), molybdenum portions (5) and (21) which have a coating of material chosen from the group consisting of chromium-manganese, chromium-cobalt, chromium-iron and chromium-boron alloys as a protection against oxidation.
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:
Before an electrode assembly is inserted into a quartz glass tube, a reinforcement bending process is applied to a metal foil. Even when a vibration load acts on the electrode assembly during the insertion of the electrode assembly into the quartz glass tube, the metal foil is not easily deformed, so that a rod electrode can be prevented from largely swinging together with the metal foil. Consequently, the position of a tip end portion of the rod electrode can be easily recognized by using a camera, whereby the degree of the insertion of the electrode assembly into the quartz glass tube can be correctly adjusted.
Abstract:
For manufacturing a high-pressure discharge lamp, a tungsten electrode is welded to a molybdenum foil by bringing a shaft of tungsten electrode into close contact with the molybdenum foil, and by irradiating a laser light, having a metal melting wavelength, to a junction of the molybdenum foil with the tungsten electrode from a location closer to the molybdenum foil to melt both the molybdenum foil and the shaft of the tungsten electrode for bonding.
Abstract:
A high pressure discharge lamp having an extended life includes a discharge vessel 8, and a feedthrough 10 extending through a plug 11. A directly sintered connection is formed between the feedthrough 10 and the plug 11 wherein sealing material 7 is provided covering the area surrounding the feedthrough on the outer surface of the plug 11. The plug 11 is formed of a composite material whose thermal expansion coefficient lies between that of the ceramic vessel and of the metal feedthrough.
Abstract:
A vacuum fluorescent display and a manufacturing method thereof are disclosed. The vacuum fluorescent display has a faceplate and a substrate forming a vacuum-space, segments, filaments, grids, pin leads, stands for fixing filaments and a stationary base for fixing the stands. The stationary base is a hollowed-out rectangle which includes a pair of parallel setters for welding the stands on opposing sides of the substrate and a pair of spacing strips for maintaining the interval between the setters. The base is fixed to the substrate, and then setters are separated from each other by removing the spacing strips. The ends of setters extend outwardly from the vacuum-space to serve as a conductor to the filament.
Abstract:
A flash lamp which has two electrodes of refractory metal fused into a glass housing. In order to enable a soft-soldered connection, the outer end of the electrodes is respectively connected to a soft-solderable metal coating.
Abstract:
The invention relates to a high-pressure discharge lamp comprising a discharge vessel (3) enclosing a discharge space (3b) and provided with two main electrodes (4,5). Each of the main electrodes is connected to a lead-through member (40,50), which is enclosed with a clearance space (10) by a closing part (30) and is connected thereto by means of a melting glass connection (9) in a gas-tight manner. According to the invention, the lead-through member is provided with a proturberance (51) reaching as far as the closing part in such a manner that the lead-through member (50) is passed with a clamping fit through the ceramic closure member. Thus, the lead-through member is fixed, as a result of which the manufacture of the lamp is considerably simplified.