Abstract: Disclosed are a modular heat dissipation structure and an LED lighting device. The modular heat dissipation structure includes a power box configured to accommodate and dissipate a power supply; and a heat sink configured to dissipate a light source; where the heat sink includes a first overlap portion, the power box includes a second overlap portion, the first overlap portion is provided on a side of the heat sink opposite to the second overlap portion and is provided corresponding to the second overlap portion, and the first overlap portion is overlapped above the second overlap portion. The LED lighting device includes the above-mentioned modular heat dissipation structure.

Abstract: An LED high bay light comprises a plurality of LED illuminant engines arranged abreast and alternately; each of the LED illuminant engine comprises an LED strip-shaped illuminant and an optical lens set covering the LED strip-shaped illuminant; the optical lens set comprises a plurality of strip-shaped optical lenses arranged conterminously; and two adjacent strip-shaped optical lenses are connected to each other through a mutual cooperation of the stepped spigots arranged oppositely. Each illuminant engine thereof adopts a structure of strip-shaped optical lens set with multiple sections, greatly reducing the difficulty in making molds and the cost for manufacturing parts.

Abstract: An LED wall lamp, comprising a radiating metal shell; the radiating metal shell comprises an upper cover for installing a light source module and a lower cover for installing a power module; one side of the upper cover rotationally connects to one side of the lower cover in cooperation with a rotating shaft with a boss through a side slot for locating; the other side of the upper cover connects to the other side of the lower cover in a fastening manner through a screw structure. The LED wall lamp with an outer radiating shell of simpler connection structure, thus, no secondary possessing is needed and the assembly efficiency is higher.