The present invention relates to a method for manufacturing large lighting which uses a power LED, such as for large LED lighting for street lamps, which incorporates a heat dissipation device that has the ability to dissipate heat with natural convection to maintain ambient temperature. The disclosed method is novel applied technology for producing a large LED lighting, such as for street lamps, which has a power LED device with a unique, rear heat dissipation capability. In addition to maximum thermal efficiency by heat dissipation, the present LED lighting system also increases luminous efficiency by providing high light emission with only a small quantity of LED power.