A method for manufacturing a light guide plate (LGP) positioning block thereof includes providing a positioning block body of a LGP positioning block and filling and sealing a liquid in a receiving compartment formed in the interior of the positioning block body. The liquid is expandable with a drop of temperature so as to increase a volume thereof and thus enlarge a size of the positioning block body through elasticity of the positioning block body. In this way, the LGP positioning block is adjustable with the variation of the surrounding temperature so as to achieve effective positioning of the light guide plate and providing high reliability of a liquid crystal display device including the light guide plate.

An LED filament light including a bulb, a support bar, at least two electrode wires and at least two LED filament strips. Each LED filament strip including a base, an LED chip is set on the base and an electrode is fixed at both ends of the base. One end of the electrode is electrically connected with an LED chip on the base, the other end of the electrode is electrically connected with an electrode of another LED filament or electrically connected to one end of the electrode wires so that the support bar is fixed to the bulb, and the other end is connected with at least one. As the support bar is set to replace the existing LED filament light core and metal wire, and creatively the LED filament electrodes directly is connected to each other.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

An LED tube lamp comprises an LED module for emitting light; and a ballast interface circuit coupled to the LED module and comprising a thyristor device configured to determine whether an input external driving signal is a high frequency or high voltage signal. When the external driving signal is determined to be a high frequency or high voltage signal, the ballast interface circuit causes current conduction in the LED module for emitting light, and specifically the thyristor device is configured to conduct current upon the external driving signal being input. The ballast interface circuit further comprises a transistor, an inductor, and a resistor connected to each other; and the inductor is coupled between a terminal of the thyristor device and the LED module. Upon the thyristor device being turned on a current flowing through the inductor and the transistor maintains the conduction state of the thyristor device.

A modular lighting fixture that is capable of receiving interchangeable functional modules includes a body having a main portion and a second portion. The main portion has a hollow interior defining an interior space extending in a longitudinal direction from a first open end of the main portion to a second end of the main portion. The second portion is provided at the first end and extends outwardly in a transverse direction, wherein the interior space is configured to receive and retain a functional module configured to provide non-light emitting function. A light emitting means is provided on the second portion of the body and configured to emit light.

A lamp is provided, the lamp comprising at least one LED module and a first housing part, wherein the LED module is sealed to the first housing part against environmental influences jointly by a first sealing member and a sealing compound.

The invention provides a luminaire comprising a housing. The housing carries a lighting unit. The luminaire comprises an annular wall and a radially extending flange portion around the annular wall. The annular wall extending in an axial direction from the radially extending flange portion and at least a portion of the radially extending flange may be removable to allow mechanical connection between adjacent luminaires thus creating a lighting system.

A luminaire assembly includes a frame and a back plate. In some examples, the frame includes a lip, and the back plate includes a tab. The back plate is positionable within a housing area of the frame such that the tab is engaged with the lip and the back plate is retained within the frame. In other examples, a luminaire assembly includes a wireless module with an antenna positioned adjacent to a module opening of the back plate. The antenna provides wireless transmissions above the top side of the back plate and below the bottom side of the back plate. A luminaire support clip for a luminaire assembly includes a base and a tab. The tab and the base define a receiving area, and the luminaire support clip receives a portion of an edge of a back plate of the luminaire assembly within the receiving area.

A luminaire includes a back plate and a wire cover. The back plate includes a first tab that defines a tab receiving cavity. Further, the first tab includes a first mating feature formed therein. The wire cover includes an inner surface that defines an electronics cavity, an outer surface that defines a light source mounting platform, and a second tab. The second tab includes a second mating feature that is complementary to the first mating feature. The second tab of the wire cover is disposed in the tab receiving cavity defined by the first tab of the back plate to removably couple the wire cover to the back plate. Further, the second mating feature of the second tab engages the first mating feature of the first tab to releasably lock the wire cover to the back plate.

A lighting device uses a plurality of lighting sources. The lighting device includes a printed circuit board having a main side on which the lighting sources are arranged side by side, the lighting sources are oriented so as to project an emitted light radiation in a direction perpendicular to the main side, a first support body supporting the printed circuit board in a horizontal direction, a second support body rigidly connected to the first support body to form a single casing, and a reflector element rigidly connected by a plurality of connecting members to the second support body. The reflector element has a plurality of reflective surfaces arranged side by side. Each of the reflective surfaces faces towards one of a plurality of channel-shaped portions of the second support body and directs the emitted light radiation to one of a plurality of lenses at ends of the channel-shaped portions.