Patent AT-E400773-T1: [Translated] LAMP BODY FOR A MEDICAL LAMP AND USE THEREOF

The first lamp (3) is a gas discharge lamp, the second (4) is incandescent. Their end caps are held and connected in sockets (1, 15), forming a unit (16) which can be turned about an axis. The unit is released by unlocking, allowing it to be rotated by a pre-tensioned torsion spring (8). The spring is connected between the pivoting unit and a fixed part of the lamp body.