To change the direction of the glow, rotate the objects named "Orbin_Tub_bracket" and "Orbin_Tub_head". These objects rotate only in the right direction, along the necessary axes - the rotation of these objects along other axes is blocked in the Hierarchy -> Link info scroll. Child objects are bound to their parent.

The TurboSmooth modifier is applied to the reflector object. When working with a large number of luminaires, the modifier can be temporarily disabled, so as not to load the scene.

Information about the lamp on the site: ledron.ru