Outdoor air purifier including at least one filter element

An outdoor air purifier comprising:

• a housing comprising at least one housing cover part, a mounting base, at least one flow inlet for outdoor air to be purified, at least one flow outlet for cleaned air, and an inner clean air space;
• a fan having a standing rotational axis and arranged within the housing, wherein the at least one flow inlet is arranged radially with regards to the standing rotational axis, and the at least one flow outlet is arranged axially with regards to the standing rotational axis;
• at least one filter element at least partially surrounding the inner clean air space,
• wherein the fan is displaced axially from the mounting base and is in fluid connection with the inner clean air space,
• wherein the at least one filter element extends essentially parallel to the standing rotational axis,
• wherein the at least one filter element comprises a multitude of filter element segments neighboring each other circumferentially,
• wherein the multitude of filter segments is arranged in a polygonal or circular shape around the standing rotational axis,
• wherein at least two of the multitude of filter element segments are connected through at least one side band extending essentially parallel to the mounting base, the at least one side band comprising at least one through-hole in a connecting region between two neighboring ones of the multitude of filter element segments;
• and
• a housing structure for positioning the multitude of filter element segments to protrude through the through-hole.