Scanning and cleaning device for explosion-proof casing for monitoring apparatus such as surveillance television camera operating in explosive environment

摘要

An scanning device for a television camera sealed in a casing. An intermediate body is rotatable on a support about a first rotation axis. The camera is rotatable on the intermediate body about a second rotation axis by rotatable coupling mechanisms provided with respective internal housing seals within which are introduced and disposed along a rotation axis successive respective deformable sections of connection cable for the camera, pre-shaped partially wound in a helix with respective axis parallel to the rotation axis to be elastically deformable to unwind from the helical shape under camera rotation. The casing has a transparent element facing the camera lens and a cleaning device therefor including a transparent film and a movement mechanism to move the film across the transparent element as needed.