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