HOLE INTERIOR INSPECTION DEVICE

To provide a hole interior inspection device which has a curved inner peripheral surface, can facilitate discrimination of a type of a scratch on a hole of an inspection object and can reduce the detection time and cost.SOLUTION: A hole interior inspection device 10 comprises: a stay 41 which is inserted to a hole 82 of an inspection object 80; and a light source unit 40 in which a plurality of color light sources 42, 43, 44 having mutually different colors are fixedly arranged along the insertion direction to the inspection object 80 with respect to the tip side of the stay 41. The hole interior inspection device 10 comprises: a wide angle lens 32 which is attached to a base end side with respect to the light source unit 40 in the stay 41 and is located at a position capable of receiving reflection light formed with the mirror reflection of the projection light of the light source unit 40 on the inner peripheral surface of the hole 82 of the inspection object 80; and an imaging unit 30 which acquires a photographed image including a region to which the colors of the color light sources 42, 43, 44 are applied. The hole interior inspection device 10 comprises a scratch type discrimination unit 63 which inputs the photographed image output from the imaging unit 30.SELECTED DRAWING: Figure 2 【課題】内周面が曲面であって、被検査体の穴の傷の種類の判別を容易にでき、検出時間、コストを軽減できる穴内部検査装置を提供する。【解決手段】穴内部検査装置１０は、被検査体８０の穴８２に挿入されるステー４１と、ステー４１の先端側に対して、被検査体８０に対する挿入方向に沿って互いに色が異なる複数のカラー光源４２、４３、４４が固定配置された光源部４０を備える。穴内部検査装置１０は、ステー４１において、光源部４０よりも基端側に取付けられて、光源部４０の投射光が被検査体８０の穴８２の内周面に対して鏡面反射したときの反射光を受入可能な位置に位置する広角レンズ３２と、カラー光源４２、４３、４４のカラーが付与された領域を含む撮像画像を取得する撮像部３０を備える。穴内部検査装置１０は撮像部３０から出力された撮像画像を入力する傷種類判別部６３を有する。【選択図】図２