Lighting apparatus

A lighting apparatus having semiconductor light sources and a heat sink for the semiconductor light sources, wherein the lighting apparatus has a carrier element for at least one first group and one second group of luminous elements, said carrier element being connected to the heat sink and projecting from a side of the heat sink, and wherein the first group and second group of luminous elements are arranged on surface regions of the carrier element and each group of luminous elements comprises at least one semiconductor light source,

• wherein a further group of luminous elements is arranged at the side of the heat sink from which the carrier element projects, and the further group of luminous elements comprises at least one semiconductor light source,
• wherein the lighting apparatus has two reflector shells provided with light-reflecting surfaces, the light-reflecting surface of a first reflector shell facing the first group of luminous elements and the light-reflecting surface of the second reflector shell facing the second group of luminous elements, and wherein the light-reflecting surfaces face away from the heat sink,
• wherein the further group of luminous elements has at least one optical element which is sandwiched between the edges of the two reflector shells,
• wherein the at least one optical element is an optical waveguide,
• wherein a gap is arranged between said reflector shells, and wherein the gap between the reflector shells faces the further group of luminous elements, such that light which is emitted by the further group of luminous elements can pass through the gap,
• wherein an optical unit assigned to the further group of luminous elements is arranged in the gap, and
• wherein the light-reflecting surfaces face away from the heat sink, and wherein the further group of luminous elements has at least one optical element embodied as optical waveguide which is arranged in said gap and sandwiched between the edges of the two reflector shells.