Air guiding device of a motor vehicle body

An air guiding device for a motor vehicle body, said air guiding device comprising:

• a roof spoiler configured to be arranged on a rearward end of a roof of the motor vehicle body and above a rear window of the motor vehicle body, wherein the roof spoiler comprises a first spoiler portion extending along a transverse body axis (Y) and a second spoiler portion extending along a vertical body axis (Z), and wherein the roof spoiler comprises (i) an unmovable air guiding element and (ii) an air guiding element that is received in an element opening of the unmovable air guiding element;
• and
• a channel system for water drainage that is configured to receive and discharge water,
• wherein the roof spoiler comprises a spoiler entry opening, and wherein the channel system is configured so as to guide water flowing from the spoiler entry opening via the second spoiler portion to a surrounding environment and/or into a body shell of the motor vehicle body,
• wherein the element opening comprises a first channel of the channel system extending in a direction of the transverse body axis (Y),
• wherein the roof spoiler comprises an intermediate element arranged along the vertical body axis (Z) below the unmovable air guiding element, which intermediate element comprises a second channel of the channel system, which intermediate element is curved along the vertical body axis (Z) relative to the roof in a direction of the rear window, and which intermediate element is connected to the first channel in a perfusable manner.