Provided is an image capturing device (100) for capturing an image of a target (99). The image capturing device (100) includes: a tubular portion (20) including an optical component (2) and configured to receive light from the target (99)； a housing (30) including an electronic component (40) configured to process the light received from the tubular portion (20)； a cap (10) covering at least a part of the tubular portion (20)； and a blower (37) mounted in the housing (30) and configured to supply air to at least one of the cap (10) and the optical component (2) included in the tubular portion (20). The cap (10) and the part of the tubular portion (20) covered by the cap (10) define an air-feeding path (11) configured to pass the air supplied from the blower (37).
