Lighting device and method for producing a heat sink of the lighting device and the lighting device

A lighting device comprising:

• at least one light source;
• an at least partly translucent bulb;
• at least one heat sink configured to cool the at least one light source, the at least one heat sink having a contact area with one or more bent sheet metal parts extending from an edge of the contact area, each of the one or more bent sheet metal parts forming a heat sink segment, and each heat sink segment having a free end;
• and
• a driver housing having an upper housing, proximal to the at least one light source, the upper housing being located at least partly within the at least one heat sink when the lighting device is assembled, and a lower housing, distal from the at least one light source when the lighting device is assembled,
• wherein the upper housing has a surrounding ring having notches arranged in a peripheral direction, the free ends of the heat sink segments being configured so as to be lockingly insertable into the peripherally extending notches, wherein the at least one heat sink has a tube-like shape and comprises plural bent sheet metal parts forming the heat sink segments and clearances alternating in a peripheral direction, and
• wherein the at least partly translucent bulb has at least one catching portion formed, on a portion of the bulb, that engages with at least one of the clearances and locks onto the at least one heat sink.