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.

A lamp and a lamp string are disclosed. According to the lamp base and the lampshade of the disclosure, the lampshade is connected with the lamp base, an inner wall of the lamp base is provided with a first flange and a second flange, an outer wall of the lampshade is formed with a first abutting surface and a second abutting surface, the first flange abuts against the first abutting surface, and the second flange abuts against the second abutting surface. The first abutting surface is a conical surface, a diameter of the lampshade at a position corresponding to the first abutting surface gradually decreases along a direction towards the lamp base, and an included angle between the first abutting surface and the second abutting surface is an obtuse angle.

A lamp and a lamp string are disclosed. According to the lamp base and the lampshade of the disclosure, the lampshade is connected with the lamp base, an inner wall of the lamp base is provided with a first flange and a second flange, an outer wall of the lampshade is formed with a first abutting surface and a second abutting surface, the first flange abuts against the first abutting surface, and the second flange abuts against the second abutting surface. The first abutting surface is a conical surface, a diameter of the lampshade at a position corresponding to the first abutting surface gradually decreases along a direction towards the lamp base, and an included angle between the first abutting surface and the second abutting surface is an obtuse angle.

An assembling mechanism for LED downlight includes a cylindrical body, at least one spring fixed on the cylindrical body, and a cover assembled on the at least one spring. Each of the at least one spring includes a fixing portion, a reed extending from the fixing portion along a rotation direction of the cylindrical body, and a catching portion disposed on the reed. The catching portion extends along the radial direction of the cylindrical body. The cover includes at least one clamping gap. Each of the at least one clamping gap includes an open provided along the rotation direction of the cylindrical body. The catching portion is inserted into the clamping gap from the opening by rotating the cover.

A lamp assembly includes a lamp, a medium and an assembling piece. The medium is configured to connect the lamp to a carrier. The assembling piece is disposed between the lamp and the medium, and is configured to connect the lamp to the medium, wherein the assembling piece includes a first part and a second part. The first part is configured to non-threadedly connect the lamp with the medium. The second part is configured to release the lamp from the medium.

A lamp assembly includes a lamp, a medium and an assembling piece. The medium is configured to connect the lamp to a carrier. The assembling piece is disposed between the lamp and the medium, and is configured to connect the lamp to the medium, wherein the assembling piece includes a first part and a second part. The first part is configured to non-threadedly connect the lamp with the medium. The second part is configured to release the lamp from the medium.

A lamp includes a main body, a lighting assembly, a lampshade assembly, and a reflector cover. The main body includes a heat sink and a lamp holder, the bottom of the heat sink extends outwardly to form a flange, the lamp holder has a trumpet shaped structure, a bottom of the lamp holder has a minor axis along a longitudinal direction and a major axis along a transverse direction. The lighting assembly is mounted to the bottom of the lamp holder. The lampshade assembly includes a cover body covering the lamp holder and a spring located in the cover body. The reflector cover includes a sleeving portion and an embedded portion, an inner diameter of the embedded portion is less than the major axis of the bottom of the lamp holder, and is greater than the minor axis.

The disclosure provides an illuminant decoration device comprising a lampshade, a clamping seat and a light string. The light string comprises a lamp cap assembly and a lead wire interconnecting the lamp cap assemblies, which comprises a lead wire end, an LED bulb, an isolating pillar and a heat shrinkable sleeve. The LED bulb has a positive electrode bulb pin and a negative electrode bulb pin, the lead wire end is electrically connected to the positive electrode bulb pin and the negative electrode bulb pin respectively through the lead wire, the isolating pillar is arranged between the two electrical connection bodies, and the heat shrinkable sleeve is wrapped on the outside of the entirety composed of the lead wire end, the LED bulb and the isolating pillar.

The disclosure provides an illuminant decoration device comprising a lampshade, a clamping seat and a light string. The light string comprises a lamp cap assembly and a lead wire interconnecting the lamp cap assemblies, which comprises a lead wire end, an LED bulb, an isolating pillar and a heat shrinkable sleeve. The LED bulb has a positive electrode bulb pin and a negative electrode bulb pin, the lead wire end is electrically connected to the positive electrode bulb pin and the negative electrode bulb pin respectively through the lead wire, the isolating pillar is arranged between the two electrical connection bodies, and the heat shrinkable sleeve is wrapped on the outside of the entirety composed of the lead wire end, the LED bulb and the isolating pillar.

Apparatus and methods for lighting. The apparatus may include an LED light source. The light source may be disposed in housing. The apparatus may include a circuit. The circuit may be configured to cause the LED light source to emit light at: a first intensity; and a second intensity that is different from the first intensity. The apparatus may include a mechanical power state selector. A user may use the power state selector to select between LED light sources that are arranged to illuminate in different directions. The apparatus may include a CCT state selector. A user may use the CCT state selector to select a CCT for one or more LED light sources. The CCT may be produced by combining light from one or more LEDs of different CCTs.