Abstract: An LED lighting device includes an LED light engine and a heat sink including a heat dissipation structure. The heat dissipation structure includes: a plurality of heat conductive rod rows including a plurality of vertical heat conductive rods; a plurality of horizontal heat conductive rods including a plurality of surfaces and attached onto one end of the vertical heat conductive rods; another end of the vertical heat conductive rods vertically attached to a back side of the LED light engine; and a plurality of fin modules attached to any one of the surfaces of the horizontal heat conductive rods. Accordingly, the heat dissipation area is increased and the heat sink is separated from the LED light engine such that heat dose not accumulate thereon and the shortcoming of airflow on the heat sink can be overcome with improvements.

Abstract: In an LED lighting apparatus and a heat sink thereof, the heat sink includes a heat dissipation structure for airflows, and the heat dissipation structure includes: a plurality of heat conductive rods arranged spaced apart from each other in rows and attached at a back side of an LED light engine; each heat conductive rod including an extension portion horizontally extended on at least one side of the LED light engine and a plurality of surfaces; and a plurality of fin modules attached to two corresponding surfaces of each one of the extension portions respectively; each fin module including a plurality of fins spaced apart from each other; wherein an air gap is formed between any two of the adjacent fin modules and a fin channel is formed between any two of the adjacent fins such that air flows through these air gaps and fin channels.

Abstract: An LED lighting device includes an LED light engine and a heat sink including a heat dissipation structure. The heat dissipation structure includes: a plurality of heat conductive rod rows including a plurality of vertical heat conductive rods; a plurality of horizontal heat conductive rods including a plurality of surfaces and attached onto one end of the vertical heat conductive rods; another end of the vertical heat conductive rods vertically attached to a back side of the LED light engine; and a plurality of fin modules attached to any one of the surfaces of the horizontal heat conductive rods. Accordingly, the heat dissipation area is increased and the heat sink is separated from the LED light engine such that heat dose not accumulate thereon and the shortcoming of airflow on the heat sink can be overcome with improvements.

Abstract: An induction generator includes a mounting member, a supporting member, a sensing coil unit, and a magnet unit. The supporting member is mounted on the mounting member such that relative rotation between the mounting and supporting members is permitted about a pivot axis. The sensing coil unit is mounted on one of the mounting and supporting members, and has a field-sensing plane. The magnet unit is mounted on the other of the mounting and supporting members, and has a field-emanating plane. An assembly of the supporting member and one of the sensing coil unit and the magnet unit that is mounted on the supporting member has a weight center that is offset from the pivot axis. Relative rotation between the mounting and supporting members about the pivot axis induces electrical current in the sensing coil unit.

Abstract: An article includes a main body, an electrical load on the main body, and a magnet unit and a sensing coil unit that constitute an induction generator which is connected to the electrical load. The main body is provided with an elongated compartment that extends along a longitudinal axis, and has opposite first and second ends along the longitudinal axis. The main body is movable so as to alternate between a first state, where the first end is disposed higher than the second end, and a second state, where the second end is disposed higher than the first end. The magnet unit and the sensing coil unit are mounted on the main body and are capable of relative movement therebetween by virtue of gravity so that electrical current is induced in the sensing coil unit when the main body alternates between the first and second states.