Pipe endoscope

A pipe endoscope includes: a transparent observation container having a bottomed cylindrical shape which is open on a base end side and sealed on a tip side; a scope which is inserted into the observation container and includes an objective lens at a tip of the scope; and an image processing device which is connected to the scope and processes information collected by the scope to display a video image. The observation container includes: a protrusion which is projected to the tip side beyond a sealed bottom part having light-transmitting property, and a tip of which is processed to have curvature; and a detachable light source which irradiates the periphery of the bottom part with light.