Patent ID: 8690386
Filing Date: 2014-04-08
Classification: F21K,F21Y

Abstract:
1. An LED bulb having radiant cooling, comprising; a lamp housing; a lamp cap engaged with said lamp housing; a core tube having a first and second end, said core tube defining an inner space in open communication with said first and second ends, said core tube substantially disposed inside said lamp housing; a plurality of LED plates mounted on an outer periphery of said core tube; a controller controlling an on-off operation of said LED plates disposed at said first end of said core tube, said controller being disposed to extend within said inner space of said core tube to be encircled by said core tube and said LED plates; and a colloid member is arranged at a connection of said lamp housing and said lamp cap; wherein said first end of said core tube is coupled to said controller and said lamp cap to define a contiguous medium that thermally dissipates heat produced by said LED plates by radiant cooling of the heat through said core tube, said lamp cap, said inner space and said lamp housing.