A lighting device is disclosed in the present disclosure. The lighting device includes a support assembly, an illuminant assembly, and a switch assembly. The illuminant assembly is connected to the support assembly and capable of being rotated to the support assembly. When the illuminant assembly is rotated to a position at which an angle between the illuminant assembly and the support assembly is less than or equal to a first angle threshold, the switch assembly turns to an on-state. In this way, the lighting device has a function of a switch.

This disclosure discloses a light-emitting bulb. The light-emitting bulb includes a cover, an electrical associated with the cover, a board arranged between the cover and the electrical connector, and a first light-emitting device disposed on the board. The first light-emitting device includes a carrier having a first side and a second side, a first electrode part disposed near the first side and extending to the second side, a bended part disposed near to the second side and spaced apart from the first electrode part, and a second electrode part extending from the bended part to the first side. No light-emitting diode unit is arranged on the second electrode part.

Lighting devices, systems, and methods for selectively activating S cones and L+M cones in a human retina and for regulating the phase of circadian rhythm in a human subject.

A LED assembly includes a baseplate and a diffuser. A circuit board connected to the baseplate has a first set of LEDs directed to emit light toward the diffuser. Additionally, a frame is attached to the baseplate and positioned to surround the circuit board. A flexible circuit with a second set of LEDs is attached to the frame, with the LEDs positioned to emit light predominantly perpendicular with respect to the first set of LEDs.

A lighting device comprises a support comprising a mounting section having at least one mounting face. The at least one mounting face has an arrangement direction and comprising at least two contact sections along the arrangement direction. The support further comprises a body section adjacent to the mounting section. The support further comprises a plurality of layered conductors connecting the body section to the at least one mounting face. The lighting device comprises at least one light-emitting element mounted along the arrangement direction of the at least one mounting face such that the at least one light-emitting element is in electrical contact to the at least two contact sections.

A lighting fixture and method of providing lighting is provided herein that utilizes both direct and indirect light sources. The direct and indirect light sources can be provided in arrays of light emitting diodes (LEDs) oriented along desired axes. In some versions, the light fixtures described herein include a direct lighting array having one or more LEDs oriented to project light downwardly and an indirect lighting array having a plurality of LEDs oriented to project light in a transverse direction. Further, the light fixtures can include an indirect lighting member configured to be illuminated by the plurality of LEDs of the indirect lighting array. Additionally, or alternatively, the light fixtures described herein can include one or more controllers that are configured to independently operate the direct and indirect lighting arrays. Moreover, the indirect lighting array can be configured to emit light in a plurality of colors to visually convey information.

A theatrical lighting apparatus including a plurality of light sources including a first light source and a second light source; and a plurality of reflector segments including first and second reflector segments; wherein the plurality of light sources are centrally located between the plurality of reflector segments; wherein each of the plurality of reflector segments has a focal point; wherein the first light source is located approximately the focal point of the first reflector segment; and wherein the second light source is located approximately the focal point of the second reflector segment. The plurality of light sources may include at least one white light emitting diode light source. The plurality of light sources may be fixed to a single heat exchanger centrally located between the plurality of reflector segments. The heat exchanger may be configured to be moved relative to the plurality of reflector segments by an actuator.

A respiratory ventilation device—configured to send an airflow, generated by a fan, into a duct that extends between the device and a breathing mask configured to be worn by a user—comprises an air inlet intended to admit air into the device; a fan; and an air outlet configured to be connected to the duct, such that, when the fan is in operation, the air flows from the air inlet successively toward the fan and then toward the air outlet. The device also comprises a flow rate sensor configured to measure a flow rate of air circulating through the device, and/or a pressure sensor configured to measure a pressure between the fan and the air outlet. A control unit is connected to the flow rate sensor and/or to the pressure sensor. The device also includes at least one source of light.

An area light is provided including a housing defining a central axis having a first end, a second end opposite the first end, and a side portion; a cover mounted on the first end of the housing; a light module disposed on the first end of the housing, the light module comprising a heat sink and at least one light-emitting diode (LED) to emit light through the cover and in a direction that extends 360 degrees around the center axis; and a battery receptacle disposed on the side portion of the housing to receive a removable battery pack and supply electric power form the removable battery pack to the at least one LED. At least one hook is provided on or adjacent the first end of the housing.

An end cap for mounting an LED support in a sign cabinet comprises a support-mating portion for mating with an LED support, the support-mating portion including a hollow portion into which an LED support can be inserted and a protruding portion that protrudes into the LED support; and a cabinet-contacting portion opposite to the support-mating portion, the cabinet-contacting portion including a cup section for contacting the cabinet and supporting the end cap and LED support within the cabinet.