{HEAD ~ The heat} conducted to {TAIL ~ the projection portion} 42 is efficiently conducted from the end face 43 of the projection portion 42 to the fixture body 12 and radiated into air 
conducted to
{ HEAD ~ The heat } conducted to { TAIL ~ the projection portion } 42 is efficiently conducted from the end face 43 of the projection portion 42 to the fixture body 12 and radiated into air
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH