Abstract:
This invention relates to a sealed infrared radiation source, comprising an emitter membrane being stimulated by an electrical current conducted through said membrane, said membrane thus comprising an electrical conductor, wherein the membrane is mounted between a first and a second housing parts, at least one of which being transparent in the IR range, and each housing part defining a cavity between the membrane and the respective housing part of each side of the membrane, wherein the housing parts are at least partially electrical conductive, and a first of said housing parts is electrically coupled to a first end of said electrical conductor and insulated from the second end of said electrical conductor, the second housing part being electrically coupled to a second end of said electrical conductor and being insulated from the first end of said electrical conductor.
Abstract:
A long-life incandescent lamp and a socket insert for use with conventional lamps to provide long life. The lamp (10) includes a sealed glass envelope (12), a base (14) fixedly attached to the glass envelope, a center contact (24) fixedly attached to the base and electrically insulated therefrom, a pair of lead wires (16, 18) extending within the envelope, an illuminable filament (20) disposed within the envelope and electrically connected between the lead wires, a diode (22) electrically connected between the center contact and the one lead wire for half-wave rectifying current to the filament, and a resistor (26) for providing a resistive bridge between the base and center contact. The resistor has a resistance substantially in excess of the resistance of the filament, preferably no greater than 27 Kohms.
Abstract:
A lamp (10) automatically controls the current flowing to a filament (60) and limits rush current to the filament (60). The lamp (10) includes a bulb (54) that houses the filament (60). The filament (60) is connected in series with a resistor (12) in the bulb (54). The resistor (12) is connected in parallel with a temperature-sensitive switch (14) in the bulb (54). The temperature-sensitive switch (14) includes a bimetal element (14a) that opens and closes a contact (14b). When current begins to flow, the bimetal element (14a) is deformed by heat from the filament (60). When the bimetal element (14a) is heated to a predetermined temperature, the contact (14b) closes to short-circuit the resistor (12).
Abstract:
An incandescent lamp bulb (70) which is driven by an electronic control module (ECM) (28) and method of manufacture includes an inductor (72) having a magnetic element and a winding thereon disposed within the lamp bulb (70). The inductor (72) significantly reduces the di/dt rise time of voltage and current when a triac (74) within the ECM module (28) is driven to conduction on each one half cycle of the applied AC line voltage. This operation in turn produces a substantial reduction in radio frequency interference, both of radiation transmitted into space from the lamp bulb (70) and by direct DC coupling back into the AC line voltage source. In a preferred embodiment, the di/dt rise time is calculated mathematically based on a Fourier series transformation of the current conducted through the filament (16) by the triac (74).
Abstract:
Die Erfindung bezieht sich auf eine Abblendkappe für eine Lampe mit zwei separaten Strahlungsquellen (4, 5) und insbesondere für eine Zweifaden-Glühlampe, die eine konkave Form mit einer Bodenfläche (3) aufweist, von der sich eine umlaufende Seitenwandung (2) wenigstens bis zu einer Höhe (H 0 ) über der Bodenfläche (3) erstreckt, wobei die Abblendkappe (1) in einem in der Höhe (H 0 ) parallel zur Bodenfläche (3) gebildeten Querschnitt eine Breite aufweist, die über einen ersten Längenabschnitt (L1) der Abblendkappe (1) innerhalb einer Toleranz von ± 0,1 mm konstant ist und sich über einen zweiten Längenabschnitt (L2) verringert, der sich vom ersten Längenabschnitt (L1) bis zu einem ersten Ende der Abblendkappe (1) erstreckt, und die Höhe der Seitenwandung über den ersten Längenabschnitt (L1) innerhalb einer Toleranz von ± 0,1 mm der konstanten Höhe (H 0 ) entspricht und innerhalb des zweiten Längenabschnittes (L2) ansteigt, wobei der erste Längenabschnitt (L1) zwischen 70% und 98% der Länge der Abblendkappe (1) in dem in der Höhe (H 0 ) gebildeten Querschnitt beträgt. Die Erfindung bezieht sich auch auf eine Lampe mit einer solchen Abblendkappe.
Abstract:
A means for switching the headlights on vehicles such as automobiles between full beam and half beam. When the light is switched from half to full beam the half beam disappears. The present invention enables the half beam to remain even while the full-beam setting is on, by the use of preferably a diode in the current circuit for the light setting.
Abstract:
An energy-efficient incandescent lamp has a transparent heat mirror coating (4) placed on the envelope (2). A diode (30) is connected in series with the filament (6). This reduces the voltage across the filament and increases the current passing through it, so that shorter and greater diameter filament wire is used. This makes a stronger filament than is used in a conventional incandescent lamp with no diode, and makes the filament more resistant to displacement by mechanical forces.
Abstract:
An incandescent lamp having an extended operating life with a high operating efficiency in terms of lumens per watt. The lamp incorporates a rectifying diode (40) in series with the filament (26) and the filament (26) has an operating temperature less than 2550oC. A reflector (28) is mounted in the neck portion (14) of the lamp for reflecting visible light outwardly through the bulb portion (12) of the envelope (10) and for minimizing convection currents in the base (32) of the lamp. The diode (40) is disposed between the reflector (28) and the lamp base (32).
Abstract:
Eine Lampe (1) weist einen Sockel (2), einen lichtdurchlässigen Kolben (3), in dem mindestens eine Lichtquelle (4) untergebracht ist, und einen Treiber (10) zur Versorgung der mindestens einen Lichtquelle (4) mit elektrischen Betriebssignalen, der in dem Sockel (2) untergebracht ist, auf, welcher Kolben (3) sockelseitig nach außen führende Versorgungsleitungen (6) aufweist, wobei der Treiber (10) mindestens ein in Richtung des Kolbens (3) vorstehendes Kontaktelement (17) aufweist, in welches ein freistehender Abschnitt der jeweiligen Versorgungsleitung (6) kontaktierend eingesteckt ist. Die Erfindung ist insbesondere anwendbar auf Lampen mit LEDs als Lichtquellen, insbesondere zum Ersatz herkömmlicher Lampen wie Glühlampen.