LED projecting lamp

An LED projecting lamp comprising:

• a lamp holder receiving an electric source module thereon, said electric module provided with two conducting terminals for connecting an external power source, said lamp holder formed with a combination circumference, said combination circumference having interior fixed with a plurality of bolt joints;
• and
• a lamp cup having a bottom wall disposed with a combination recess to be combined together with said combination circumference of said lamp holder, a circuit board installed at an inner side of said bottom wall of said lamp cup, said circuit board installed thereon with LEDs, said lamp holder and said lamp cup and said circuit board firmly combined together by bolts engaging with said bolt joints, a lampshade lens assembled over said circuit board, said lampshade lens bored with a plurality of LED holes for receiving said LEDs therein, said lampshade lens having function of concentrating and projecting light, said lamp cup having an inner groove portion disposed with radiating convection holes and an outer surface coated with radiating paint, said lamp cut provided with an opening circumference for positioning a fixing ring, said fixing ring bored with radiating convection holes, said radiating paint of said lamp cup and said radiating convection holes of both said lamp cup and said fixing ring functioning to quickly dissipate heat produced by said LEDs for retarding heat exhaustion and prolonging service life of said LEDs.