Abstract: A spring damper bearing includes a bearing cap, a guide ring and a thrust bearing. The bearing cap and the guide ring are connected together and surround the thrust bearing. The bearing cap includes an annular main body portion and a barrier part which is located on an inner circumferential side of the main body portion. The barrier part has an annular shape and includes an outer circumferential end connected to the main body portion and an inner circumferential end which extends out from the outer circumferential end and is away from the main body portion. The inner circumferential end is nearer than the outer circumferential end to the lower axial side and the inner radial side of the spring damper bearing.

Abstract: An LED bulb comprises a structural shell formed by folding a flat PCB into a three-dimensional polyhedron shape and a fitting for removably coupling the bulb to a light socket. The PCB comprises a plurality of LEDs, at least one LED mounted electronically on a plurality of faces of the polyhedron, and a driver circuit for driving each LED. The perimeter of the PCB is shaped to join adjacent faces. Each LED produces minimal excess heat, which is partially conducted by a metallic heat sink bridge to the PCB and dissipated to the air through the PCB and through a plurality of spaces in the shell.

Abstract: The light intensity level of a dimmable LED bulb is set by interruption of the AC signal by the user. The bulb's driver circuit includes a controller having dimmer control logic for controlling the brightness. Optionally, the LED bulb can be dimmed by an external TRIAC dimmer.

Abstract: An LED bulb comprises a structural shell formed by folding a flat PCB into a three-dimensional polyhedron shape and a fitting for removably coupling the bulb to a light socket. The PCB comprises a plurality of LEDs, at least one LED mounted electronically on a plurality of faces of the polyhedron, and a driver circuit for driving each LED. The perimeter of the PCB is shaped to join adjacent faces. Each LED produces minimal excess heat, which is partially conducted by a metallic heat sink bridge to the PCB and dissipated to the air through the PCB and through a plurality of spaces in the shell.

Abstract: The light intensity level of a dimmable LED bulb is set by interruption of the AC signal by the user. The bulb's driver circuit includes a controller having dimmer control logic for controlling the brightness. Optionally, the LED bulb can be dimmed by an external TRIAC dimmer.

Abstract: An LED bulb comprises a structural shell formed by folding a flat PCB into a three-dimensional polyhedron shape and a fitting for removably coupling the bulb to a light socket. The PCB comprises a plurality of LEDs, at least one LED mounted electronically on a plurality of faces of the polyhedron, and a driver circuit for driving each LED. The perimeter of the PCB is shaped to join adjacent faces. Each LED produces minimal excess heat, which is partially conducted by a metallic heat sink bridge to the PCB and dissipated to the air through the PCB and through a plurality of spaces in the shell.

Abstract: An LED bulb comprises a structural shell formed by folding a flat PCB into a three-dimensional polyhedron shape and a fitting for removably coupling the bulb to a light socket. The PCB comprises a plurality of LEDs, at least one LED mounted electronically on a plurality of faces of the polyhedron, and a driver circuit for driving each LED. The perimeter of the PCB is shaped to join adjacent faces. Each LED produces minimal excess heat, which is partially conducted by a metallic heat sink bridge to the PCB and dissipated to the air through the PCB and through a plurality of spaces in the shell.