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.

A lighting device for illuminating a room or enclosed space comprising: a light source; and a support adapted to support the light source, the support having a surface which defines a guide path. The light source is adapted to be movable relative to the support along the guide path between first and second lighting positions.

A recessed downlight fixture and method for installation is provided. The recessed downlight fixture can be installed in a retrofit application, after a ceiling is installed, through a pre-existing opening in that ceiling. Alternatively, a recessed downlight fixture according to a second embodiment can be installed before a ceiling is present. In either embodiment, the light source coupled to, for example, a heat sink, can be universally moved in three degrees of movement, rotationally, along a tilt axis, or further within the ceiling to increase or decrease the recess. All such universal adjustments can take place through and below the ceiling opening during or after installation.

A lighting device (10) is disclosed comprising a glass housing (20) delimiting an optical chamber (21), wherein at least one solid state lighting (SSL) element (30) is mounted within the optical chamber. The optical chamber (21) further comprises a light exit window (50) mounted in an aperture (23) of the optical chamber opposite the at least one solid state lighting element, the light exit window comprising a sealing plate sealed to the glass housing by a glass seal (51); and a light-transmissive thermal barrier (40) extending across the optical chamber in between the sealing plate and the at least one solid state lighting element, which protects the at least one SSL element (30) from thermal damage during the formation of the glass seal (51). Also disclosed are a luminaire including such a lighting device and a method of manufacturing such a lighting device.

A lighting device (10) is disclosed comprising a glass housing (20) delimiting an optical chamber (21), wherein at least one solid state lighting (SSL) element (30) is mounted within the optical chamber. The optical chamber (21) further comprises a light exit window (50) mounted in an aperture (23) of the optical chamber opposite the at least one solid state lighting element, the light exit window comprising a sealing plate sealed to the glass housing by a glass seal (51); and a light-transmissive thermal barrier (40) extending across the optical chamber in between the sealing plate and the at least one solid state lighting element, which protects the at least one SSL element (30) from thermal damage during the formation of the glass seal (51). Also disclosed are a luminaire including such a lighting device and a method of manufacturing such a lighting device.

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.

A lighting device including at least one surface light source and a support for this, wherein the surface light source includes a fixing element which has a T-shaped cross-section, and wherein the support includes a receiving part for the fixing element, a cross-section through the receiving part having a shape complementary to the cross-section of the fixing element. In the lighting device according to the invention, the fixing element includes an upright and a head, the upright extending from a lower face of the surface light source, the upright and the head together with this lower face delimiting at least one engagement groove for the receiving part of the support. Application to motor vehicles.

A method of producing a fastening device, and a fastening device, is provided. The method comprises the steps of forming a body elongating along a first axis by iteratively stacking layers, wherein the body comprises an at least partially open cavity elongating along the first axis. The method further comprises the step of forming a first and second chambers in the cavity, and forming an element, of which element a first portion projects into the first chamber and of which element a third portion projects from the cavity of the body in the first plane. The element is rotatably arranged, such that upon rotation of the element, the third portion of the element is configured to be releasably wedged within the chamber.

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 with overvoltage protection capability is provided. The LED tube lamp includes a lamp tube, two external connection terminals, a rectifying circuit, a filtering circuit, an LED module, and a protection circuit. The protection circuit is coupled between two input terminals of the LED module and configured to perform overvoltage protection when determining that a voltage level between the two input terminals of the LED module reaches or is higher than a predefined voltage value, wherein the protection circuit includes a diode and the predefined voltage value is in a range of about 40V to about 600V.