Abstract:
The invention describes a gas-discharge lamp (1) comprising an inner vessel (100) enclosing a pair of electrodes (12, 13) separated by a gap (G); and an outer vessel (10) enclosing the inner vessel (100); and wherein the lamp (1) comprises a lateral stripe (P) arranged on the surface of a vessel (10, 100) such that the lateral stripe (P) lies below a horizontal plane (H) through a longitudinal axis (X) through the center of the lamp (1), and wherein the lateral stripe (P) extends essentially only over a region corresponding to the gap (G) between the electrodes (12, 13).
Abstract:
The present invention relates to a LED lamp unit replacing an H4 bulb in a headlamp. The LED lamp unit (2) at least comprises two LED light sources (5) arranged on two opposing sides of a support member (11) to emit in opposed half-spaces, a heat sink (12, 3) and an electrical connector socket. The electrical connector socket is designed to fit in a lamp holder of a H4 headlamp such that the plane (6) separating the opposed half-spaces is tilted around the optical axis (7) of the headlamp by an angle of between 5° and 30° against the horizontal plane when the connector socket is mounted in the lamp holder. The proposed LED lamp unit replaces H4 bulbs in H4 headlamps and achieves the required legal beam pattern without changing the optical design of the headlamp.
Abstract:
The present invention relates to a LED lamp suitable as a retrofit for S2 incandescent bulbs. The lamp comprises at least two light emitting diodes (2) arranged on two opposing sides of a carrier (1), a heat sink and a lamp socket (4). The carrier (1) preferably includes the driver electronics for the light emitting diodes (2). The carrier (1) is sandwiched between two halves (3a, 3b) of the heat sink and electrically connected with the lamp socket (4), which is connected to the heat sink. The two halves (3a, 3b) of the heat sink comprise openings (5) at the location of the light emitting diodes (2) allowing light emission of the light emitting diodes (2) through the openings (5). The proposed LED lamp has a high thermal and optical performance allowing the replacement of S2 incandescent bulbs in headlights of motorcycles or scooters.
Abstract:
A lamp 20 has a light emitting element 22 within a sealed transparent vessel 24. The vessel comprises a cylindrical section 38 with a longitudinal axis L in parallel to a longitudinal axis F of the light emitting element. In order to provide a lamp suited for compact reflectors, a heat shielding element 30, 40 is arranged to shield at least infrared light. The heat shielding element 30, 40 is arranged in parallel to the longitudinal axis F of the light emitting element 22 and has an axial extension of at least 80 % of the light emitting element 22. The heat shielding element 30, 40 is arranged to shield infrared light emitted into directions perpendicular to the longitudinal axis F covering a circumferential extension of 20° - 120° measured in cross section.
Abstract:
A retrofit lamp (310) is provided. The retrofit lamp comprises a connector (311) for mounting the lamp at an automotive headlight; a body (312) extending from the connector along an axis (313); and a plurality of light emitting diodes (314) arranged at the body. The light emitting diodes are arranged along the axis and adapted to emit light (331, 332) laterally with respect to the axis. The retrofit lamp further comprises a reflective element (315) arranged at an end of the arrangement of light emitting diodes opposite to the connector. The reflective element is adapted to reflect some light (332) emitted by the light emitting diodes. Additionally - the extension of the arrangement of light emitting diodes along the axis is shorter than a light emitting area (114) of a reference replaceable headlight bulb (110), and - the reflective element (315) is configured to establish a virtual prolongation (340) of the arrangement of LEDs.
Abstract:
A lamp 10 is described which may be used in an automotive headlight 12. The lamp 10 comprises at least one filament 20 within a transparent lamp vessel 16. A color filter portion 30 is provided through which light is emitted with a color change. The lamp vessel 16 further comprises a color transparent portion, through which light is emitted without a color change. The color transparent portion is arranged such that an illumination beam of light 40 is emitted through the color transparent portion to achieve a non-colored illumination. The color filter portion 30 is arranged such that only peripheral and/or scattered portions of light are emitted through the color filter portion to achieve a color appearance of the headlight 12 in operation of the lamp 10.
Abstract:
A headlight unit 10, 110 is described including a reflector 12 and a lamp mounting cavity 20. A lamp 30, 130 is mounted within the lamp mounting cavity 20. The lamp mounting cavity 20 is sealed by a cap 40 of partly flexible material. The cap 40 is provided as a heat spreader and dissipation element in thermal contact with the lamp 30.
Abstract:
The present invention relates to a LED lamp unit (10) comprising at least two LED light sources (2) arranged between a heat sink (3) and an electrical connector base at two opposing sides of the lamp unit (10) to emit in opposed half spaces. The proposed LED lamp unit can be constructed in a very compact form in order to replace known halogen, xenon and incandescent bulbs without changing the construction of the reflector and mechanical parts in a head lamp or signaling lamp.