LED lamp has many light-emitting surfaces and a heat-dissipating unit with two housings and an isothermal body holding the LEDs

摘要

An LED lamp comprises many light-emitting surfaces, a heat-dissipation unit (1), two housings (12,14) with a ring space between them and a hollow cylinder isothermal body (16) beneath a housing and joined to the ring space. The isothermal body has a trench is several different planes, each trench containing a light-emitting unit (3).