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: The device includes a lighting module with a light source, a light source driver, and a cooling element; an emergency module with a housing, an emergency control and a battery pack; and a connector having a cavity, a first one end is connected to the lighting module, and a second end connected to the emergency module. The cavity of the connector forms a closed space which thermally separates the emergency module from the lighting module.

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 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.