A safety light device includes a body defining a central bore and having a generally annular shape, a pair of teeth configured to extend into the central bore in an extended position and retract into the body in a retracted position, a charging system configured to charge a battery, and a plurality of light-emitting diodes (LEDs) disposed on an outer portion of the body.

A lighting apparatus includes a light source, a light housing, a light passing cover and a connector module. The light source includes multiple LED modules. The light housing has an internal container and a light opening. The light source is placed inside the internal container. A light of the multiple LED modules escapes from the light opening. At least a portion of light housing is made with a plastic material mixed with an anti-fire material. The anti-fire material increases a melting temperature for deformation of the light housing. The light passing cover covers the light opening. The connector module has a fixing connector and an elastic unit. The fixing connector is fixed to the light passing cover. The elastic unit is used for fastening the light housing to an installation platform when no external force is applied on the elastic unit.

A light source device includes: a plurality of light source parts configured to emit light. Each of the light source parts comprises a light-emitting element and a light guiding member. the plurality of light-emitting elements are configured to emit light passing through the light guiding members from the light source parts in an array in an irradiated region. One or more of the plurality of light source parts are arranged in a placement region in a different arrangement from an arrangement of the light in the irradiated region.

LED lamps and/or LED lighting devices including LED lamps are provided. An LED lamp includes two or more sets of LED packages. Each set of LED packages comprises at least one respective LED package. The two or more sets of LED packages comprising a first set of LED packages and a second set of LED packages. The LED lamp further includes a first optical element configured to control light dispersion of light emitted by the first set of LED packages; and at least one additional optical element configured to control light dispersion of light emitted by the second set of LED packages.

LED lamps and/or LED lighting devices including LED lamps are provided. An LED lamp includes two or more sets of LED packages. Each set of LED packages comprises at least one respective LED package. The two or more sets of LED packages comprising a first set of LED packages and a second set of LED packages. The LED lamp further includes a first optical element configured to control light dispersion of light emitted by the first set of LED packages; and at least one additional optical element configured to control light dispersion of light emitted by the second set of LED packages.

A light fixture (50), comprising: an electronics housing (51); first and second heat sink structures (52, 54, 56, 58, 60, 62) coupled to the electronics housing, wherein each heat sink structure of the first and second heat sink structures is defined at least in part by a heat sink outer arc (64) having first and second end points (72, 74), and wherein each heat sink structure is further defined at least in part by two heat sink radii (66, 68) extending from the first and second end points, respectively, to a center point (P) of the light fixture; first and second light sources (53); at least two lenses (106, 108, 110, 112, 114, 116) comprising a first lens attached to the first heat sink structure and covering the first light source and a second lens attached to the second heat sink structure and covering the second light source, wherein each lens of the first and second lenses is defined at least in part by a lens outer arc (120) having first and second end points (128, 130), wherein each lens is further defined at least in part by two lens radii (122, 124) extending from the first and second end points, respectively, to a point (PI) that is different than the center point of the light fixture, and wherein each lens is further defined at least in part by an inner arc (126) extending between the two lens radii (122, 124); and a ventilation channel (76, 78, 80, 82, 84, 86) arranged between the first and second heat sink structures.

Backlight panels are provided. In one or more embodiments, light emitting devices are arranged along an extending direction of an irregular boundary, so as to adaptively fill a space adjacent to the irregular boundary. Therefore, a space utilization rate and luminance at the irregular boundary are improved, and uniformity of overall luminance of the backlight panel is improved.

A lighting device includes a light source including at least two types of light emitting elements with different color temperatures, an optical element including a plurality of liquid crystal cells and configured to control a distribution of light emitted from the light source, and a control unit configured to control the light source. The control unit controls the optical element to change from a first light distribution state to a second light distribution state different from the first light distribution state. The control unit controls the light source so that a color temperature of light emitted in a direction perpendicular to a surface of the optical element is the same in the first light distribution state and the second light distribution state.

Lighting device for a vehicle, comprising a lighting module having at least one light source and one luminous surface which is illuminated by the light source, from which light emanates during operation of the lighting device, as well as a liquid crystal display which is arranged at least partially in front of the luminous surface in such a way that, during operation of the lighting device, at least one portion of the light emerging from the luminous surface enters an entrance surface of the liquid crystal display and emerges from an exit surface of the liquid crystal display, wherein the lighting device is configured to control the liquid crystal display, in a targeted manner, in order to allow portions of the light impinging on the entrance surface to pass through the liquid crystal display and not to allow other portions of the light impinging on the entrance surface to pass through the liquid crystal display.

Luminaires are described herein employing waveguides and associated architectures for dynamic alteration of illuminance distribution patterns. The waveguide includes a light extraction component. The waveguide transmits light from a light source to the light extraction component by total internal reflection (TIR). The light extraction component includes one or more reversibly moveable surfaces for altering illuminance distribution patterns of the luminaire in response to one or more forces applied to the light extraction component by a force application assembly of the luminaire.