Ulna Lamp is a wall mounted task light designed to be sold in the same product family as Peg Lamp. The lamp was inspired by the movement in the human arm. The parallel dowels of the lamp articulate in a way similar to the ulna and radius bone.
The Ulna Lamp is made from poplar, wool felt, cloth covered cord, aluminum, and a conductive copper rod is inlayed into the dowel allowing the light to slide along the length of the dowel. The lamp uses a twelve volt halogen bulb.
The light angle can be adjusted by twisting the lamp.
The lamp pivots 180°.
A quick model made from styrene and paper to demonstrate the mechanism.
The aluminum shade can be inverted to adjust from narrow to wide beam.
A CAD model was made using solidworks. Technical drawings were created and materials and components were sourced and specified for the initial prototype.
The shade assembly can slide along the dowel to adjust the distance of the light from the wall.
After the first protoype was tested it was found the heat from the halogen could burn the dowel. A heatsink was milled and installed to resovle the problem.