An embodiment relates to a lighting device. An embodiment may comprise a lighting device comprising: a light emitting module comprising a circuit board and a plurality of light emitting devices arranged on the circuit board; and a coupling member coupled to the lower surface of the circuit board, wherein the coupling member comprises: a head portion arranged on the lower surface of the circuit board and comprising a first side, a second side opposite the first side, a third side connected to the first side and the second side, and a fourth side opposite the third side; a first support portion extending from one end portion of the head portion in the vertical direction; a second support portion extending from the other end portion of the head portion in the vertical direction; a first elastic portion bent from the first support portion in an outward direction from the first support portion; a second elastic portion bent from the second support portion in an outward direction from the second support portion; a first detachment preventing portion extending from an end of the first elastic portion toward the first support portion; a second detachment preventing portion extending from an end of the second elastic portion toward the second support portion; a first leg portion extending from an end of the first detachment preventing portion toward the lower surface of the circuit board; and a second leg portion extending from an end of the second detachment preventing portion toward the lower surface of the circuit board, wherein the first leg portion has a plurality of first elastic pieces, the second leg portion has a plurality of second elastic pieces, the first elastic pieces of the first leg portion are inclined outwards from the first leg portion, and the second elastic pieces of the second leg portion are inclined outwards from the second leg portion.

The present disclosure provides a tensioning mechanism of a box and a light emitting diode (LED) box assembly with the tensioning mechanism of the box. The tensioning mechanism of the box includes a tensioning structure including a base and a tensioning rod, where the base is provided with a mounting portion, the tensioning rod includes a tensioning pin and an operating portion connected with the tensioning pin, and the tensioning pin is movably arranged in the mounting portion in a penetrating manner; and a connecting member provided with a cooperating hole, where the tensioning pin includes a flat shaft, the flat shaft is capable of being inserted into or moved out of the cooperating hole, and under the condition that the flat shaft is inserted into the cooperating hole, the flat shaft has a vertical tensioning position and a transverse unlocking position. The technical solution of the disclosure effectively solves the problem that in the related technology, an external tool is required for drawing two adjacent boxes close, resulting in a complex tensioning process.

An external connected lamp holder has a first lamp holder, the first lamp holder is provided with a first socket matched with a lamp body, the lamp body has a first driving circuit board, the external connected lamp holder further includes a first female plug assembly. The external connected lamp holder, interconnected lamp holder, driving circuit board and lamp of the embodiments realize the installation of the lamp holder and the driving circuit board through plug-in electrical connection, instead of being welded together. This construction reduces the requirements of product precision, tooling precision and assembly precision in the automated production process, and it reduces the cost of automated manufacturing and the loss in the production process of products.

An underwater directional light is provided. The directional light includes a lamp assembly, a tube assembly, and a printed circuit board assembly. The lamp assembly includes a housing and a lamp having a plurality of lighting elements. The tube assembly is coupled to the lamp and has a hollow interior. The printed circuit board assembly is mechanically coupled to the tube assembly and electrically coupled to the lamp.

The present disclosure relates generally to the technical field of lighting devices, and more particularly to a ceiling light and an adjustment method thereof. The ceiling light includes a mounting plate, a light-emitting member and an adjusting assembly. The light-emitting member is disposed on the mounting plate. The light-emitting member and the mounting plate are fixed in a circumferential direction. The adjusting assembly runs through the mounting plate and the light-emitting member. The mounting plate and the adjusting assembly are adjustable in a circumferential direction. The adjusting assembly includes an action member on an outer side thereof corresponding to the light-emitting member. The light-emitting member includes a responsive member corresponding to lighting parameters. When the mounting plate and the adjusting assembly relatively move in the circumferential direction, the action member cooperates with the responsive member to realize the regulation of the light-emitting member.

A light-emitting module includes a first mounting board having a first surface and a second surface opposite to the first surface. The first mounting board has a recess on the first surface, and the recess has a bottom surface. The first mounting board has an opening passing through the first mounting board from the bottom surface to the second surface. The light-emitting module further includes a second mounting board provided in the recess, a light-emitting element provided on the second mounting board and configured to emit light through the opening, and an elastic cushion provided between the first mounting board and the second mounting board. The light-emitting module also includes a connector. The connector and the opening sandwich a center of the first mounting board when viewed from a direction from the second surface to the first surface.

Provided is a light source device, a projector, a machining device, a light source unit, and a light source device adjusting method in which a replacement of a light source unit can be easily performed when required. The light source device 1 includes: a plurality of light source units 21 arranged in a two-dimensional array, each of the plurality of light source units having a plurality of light sources 21 and a support plate 22 supporting the plurality of light sources 21, each of the plurality of light sources 21 including a light emitting element for emitting a laser beam and a package housing the light emitting element; a base substrate 31 having a surface 311 on which the plurality of light source units 2 is arranged; and a fixing member 4 configured to detachably fix the support plate 22 to the base substrate 31.

An illumination device comprising an optical plate extending over a plurality of LEDs arranged on a PCB main surface of a PCB. In a mounted configuration said PCB and optical plate are mutually connected by fasteners. Each fastener extends with play in a plane parallel to said PCB main surface through a through hole in the optical plate in a direction transverse to said PCB main surface. The through hole has a wide portion extending over a depth D from a first main surface of the optical plate facing away from the PCB towards a second main surface of the optical plate facing towards the PCB, and said through hole is narrowed to a neck portion at said depth D. Furthermore, each fastener rests on a resilient washer seated in the wide portion of said through hole.

An LED assembly includes an omnidirectional light field. The LED assembly has a transparent substrate with first and second surfaces facing to opposite orientations respectively. LED chips are mounted on the first surface and are electrically interconnected by a circuit. A transparent capsule with a phosphor dispersed therein is formed on the first surface and substantially encloses the circuit and the LED chips. First and second electrode plates are formed on the first or second surface, and electrically connected to the LED chips.

The utility model discloses a multi-angle lighting lamp, which comprises: a lamp holder, a plurality of lamp boards and a plurality of protective covers; a plurality of protective covers are connected to the lamp board one by one, and the protective covers are covered on the lamp beads; there is a heat sink between two adjacent protective covers, and the heat sinks are communicated with the lamp cavity, so that the convection channel can be formed inside the lamp cavity, so that the air flow can directly and effectively blow the heat dissipation part, and then the air flow can better take away the heat of the dissipation part, thus, the heat on the lamp board is effectively discharged through the heat dissipation part, so the overall heat dissipation efficiency of the lamp has been greatly improved.