The invention relates to a lighting mechanism with an elongated shield made of transparent material, a burner disposed in the center of the shield, sealed-off burner connectors including both a proximal burner connector and a distal burner connector, each of which projects diametrically away from the burner in the longitudinal direction of the shield so as to extend into a proximal and a distal end region of the shield. Supply leads pass into the shield by way of a crimped part thereof and are joined there to the burner connectors. In the region of the crimped part a supplementary space is provided that is open to the interior of the shield and into which at least a certain region of the proximal burner connector extends.