A lighting system having at least one lighting unit including a light segment for receiving at least one lamp, at least one connecting element that at least in sections is electrically conductive and at one end of the light segment is mechanically and electrically connected thereto, and at least one connector, which has at least one element circumferentially surrounding a connector middle axis and at least one electrical conductor mechanically connected to or formed by the circumferential element. The connecting element is mechanically connected to the circumferential element of the connector and thereby the at least one lighting unit is mechanically and electrically connected to the connector. The lighting system can be arranged in various positions around the connector middle axis and in every position the lighting unit is mechanically and electrically connected to the connector. Several lighting units can be connected to a common connector.

A luminaire includes a light housing containing a light emitter. A first rail housing is connected to the light housing. A second rail housing is connected to the light housing. A driver is positioned in the first rail housing. A male connector extends from a first end of the first rail housing and a female connector extends from a second end of the first rail housing.

The present invention relates to a light source module coupling structure capable of coupling a light source module or a converter provided with a plate-type light-emitting light source such as a light-emitting diode (LED) and an organic light-emitting diode (OLED) to lighting by using magnetic force, and the light source module coupling structure includes: a metal lighting plate comprised of metal in lighting; a light source module having a plate-type light-emitting light source; a plurality of holes formed at the light source module or a converter; and a plurality of magnetic stators having one side thereof penetrating the holes so as to be attached to the metal lighting plate by means of magnetic force and having another side thereof suspending a perimeter of the holes so as to support the light source module or the converter, thereby coupling the light source module or the converter to the metal lighting plate.

The present invention relates to a lamp structure, which comprises a lamp cap, a plurality of first light-emitting modules, and a second light-emitting module. The lamp cap includes a body, which includes a connecting surface. One end of each of the plurality of first light-emitting modules surrounds the periphery of the connecting surface. The second light-emitting module includes a connecting lamp base. The other end of each first light-emitting module surrounds the periphery of the connecting lamp base. In addition, the outer diameter of the connecting lamp base is smaller than the outer diameter of the connecting surface. Thereby, the lighting angle of the plurality of first light-emitting modules can supplement the lighting range of the second light-emitting module.

A lighting device includes an annular light source including light sources arranged in a circular pattern, a light guide plate having a round shape in a plan view, and a case holding the annular light source and the light guide plate. The light guide plate is disposed inside the annular light source. The light guide plate includes light entering portions, circumferentially aligned portions, and a light emitting portion. The light entering portions are opposed to the light sources. Each circumferentially aligned portion is between the adjacent light entering portions. A dimension of the circumferentially aligned portion in the radial direction is larger than a dimension of the light entering portion in the radial direction. The circumferentially aligned portions are aligned with the light sources in the circumferential direction and configured to contact the light sources when the light guide plate is rotated in the circumferential direction.

A lighting device includes an annular light source including light sources arranged in a circular pattern, a light guide plate having a round shape in a plan view, and a case holding the annular light source and the light guide plate. The light guide plate is disposed inside the annular light source. The light guide plate includes light entering portions, circumferentially aligned portions, and a light emitting portion. The light entering portions are opposed to the light sources. Each circumferentially aligned portion is between the adjacent light entering portions. A dimension of the circumferentially aligned portion in the radial direction is larger than a dimension of the light entering portion in the radial direction. The circumferentially aligned portions are aligned with the light sources in the circumferential direction and configured to contact the light sources when the light guide plate is rotated in the circumferential direction.

A dome light assembly is provided for mounting to a headliner in a motor vehicle. That dome light assembly includes a mounting bracket having a flange engaging an upper face of the headliner and a receiver. Further, the dome light assembly includes a lamp housing including a fastener secured to the receiver and a light source held in the lamp housing. A related method is also provided.

A light emitting diode (LED) tube lamp configured to receive an external driving signal includes an LED module for emitting light, the LED module comprising an LED unit comprising an LED; a rectifying circuit for rectifying the external driving signal to produce a rectified signal, the rectifying circuit having a first output terminal and a second output terminal for outputting the rectified signal; a filtering circuit connected to the LED module, and configured to provide a filtered signal for the LED unit; and a protection circuit for providing protection for the LED tube lamp. The protection circuit includes a voltage divider comprising two elements connected in series between the first and second output terminals of the rectifying circuit, for producing a signal at a connection node between the two elements; and a control circuit coupled to the connection node between the two elements, for receiving, and detecting a state of, the signal at the connection node. The control circuit includes or is coupled to a switching circuit coupled to the rectifying circuit, and the switching circuit is configured to be triggered on or off by the detected state, upon the external driving signal being input to the LED tube lamp, to allow discontinuous current to flow through the LED unit.

LED lighting apparatus defining a longitudinal axis and including a lens, an element holder for holding the lens and having at least one guide pin, a fixture body for receiving the element holder and having at least a first plurality of slots extending transverse the longitudinal axis of the apparatus. The guide pin is received in at least one of the slots corresponding to a first beam angle of the lens, the element holder being configured to be selectively movable to one of the plurality of slots for selecting a projection beam angle of the LED lighting apparatus. A second plurality of slots is provided extending along the longitudinal axis and connecting the horizontal slots, such that the guide pin is repositioned from one of the first slots to another of the first slots by traveling along one of the second plurality of slots.

A technique for simplifying structure data for representing an environment. Polyhedrons can make up structure data used in an application such as modeling, visualization, and navigation. Consequently, the operations that are performed on the data often involve determining, for each polyhedron that defines a structure such as a building, whether the polyhedron obstructs a line-of-sight line between a first point in space being considered in the application and a second point. In order to determine whether a polyhedron obstructs a line-of-sight line, a data-processing system operating on the structure data must determine whether any walls of the polyhedron intersect the line. Thus, the more polyhedrons there are or the more vertices that are in each polyhedron, the more walls there are, and the more intersection checks are required, thereby adding to the computations. The disclosed technique reduces the number of walls by simplifying objects that make up the structure data.