PURPOSE: An LED lamp is provided to rapidly discharge heat generated from a printed circuit board and an LED module by combining a heat radiation unit with an end cap. CONSTITUTION: A pair of end caps(10) are made of heat conductive members. A socket unit(20) is fitted to the end cap. A heat radiation unit(30) is combined with a pair of end caps and includes a body and a rib. A guide holder is formed on the inner surface of the body to support a printed circuit board(40). The rib is protruded from the body. At least one LED module is mounted on the surface of the heat radiation unit. A tube receives the heat radiation unit. Both ends of the tube are fixed to the pair of end caps.
