Wearable air purifier

A head wearable air purifier comprising:

• a first speaker assembly arranged to be worn over a first ear of a user and a second speaker assembly arranged to be worn over a second ear of the user, wherein the first speaker assembly comprises a filter assembly, an impeller for creating an airflow through the filter assembly, a motor arranged to drive the impeller, and an air outlet downstream from the filter assembly for emitting the filtered airflow from the first speaker assembly;
• and
• a nozzle arranged to receive the filtered airflow from the first speaker assembly, the nozzle comprising an air outlet arranged to emit the received filtered airflow from the head wearable air purifier;
• wherein the filter assembly is provided upstream of the impeller and comprises one or more frusto-conical filter elements, and
• wherein the impeller is disposed within an impeller casing that is frusto-conical in shape, the impeller casing is at least partially disposed within a volume defined by a back of the one or more frusto-conical filter elements.