FURNACE INSIDE MONITORING DEVICE

To provide a monitoring device capable of monitoring the inside of a high temperature atmospheric furnace at a wide angle.SOLUTION: A furnace inside monitoring device 1 monitoring the inside of a high temperature atmospheric furnace is provided in which a tubular pipe body portion 2 is formed of; an imaging apparatus 11 comprising an optical system arranged at the distal end portion and a two-dimensional imaging device; a water cooling unit 12 which is provided at the outer circumference of the imaging apparatus 11 and through which cooling water flows; and an air cooling unit 13 provided at the outer circumference of the water cooling unit 12 and through which a cooling gas flows, the water cooling unit 12 is comprised of an approach route 12a on the central axis side of the tubular pipe body portion 2 and a return route 12b turned up from the distal end of the approach route 12a, and, in the air cooling unit 13, the distal end side of the tubular pipe body portion is opened toward the outside, and the cooling gas having flown through the air cooling unit 13 is released from the distal end side of the tubular pipe body portion 2.SELECTED DRAWING: Figure 3 【課題】高温雰囲気炉内を広角に監視できる監視装置を提供する。【解決手段】高温雰囲気炉の内部を監視する炉内監視装置１であって、先端部に配置された光学系および二次元撮像素子を備えた撮像装置１１と、撮像装置１１の外周に設けられた、冷却水が流通する水冷部１２と、水冷部１２の外周に設けられた、冷却ガスが流通する空冷部１３と、によって管状の管体部２が形成され、水冷部１２は、管体部２の中心軸側の往路１２ａと、往路１２ａの先端から折り返す外周側の復路１２ｂとからなり、空冷部１３は、管体部２の先端側が外部に向けて開放され、空冷部１３を流通した冷却ガスが管体部２の先端側から放出される。【選択図】図３