Patent ID: 7637643

Claim:
An apparatus comprising: a base; a housing pivotally connected to said base, said housing having an external surface and having an opening therein that extends in a direction and that opens at one end through said external surface, said opening having internal threads, and said housing including thermally conductive material with said internal threads thereon; a support that is disposed in said opening and that has external threads engaging said internal threads, said external threads being responsive to rotation of said support with respect to said housing for causing said support to move parallel to said direction within said opening in relation to said housing, said support including thermally-conductive material that has said external threads thereon; and a radiation-emitting structure supported on a side of said support nearest said end of said opening, said thermally-conductive material of said support carrying heat from said radiation-emitting structure to said external threads; wherein said base comprises an electrical connector at one end configured to provide electrical power to said radiation-emitting structure, and a pivotal joint at an opposing end where said housing is pivotally connected.