公开(公告)号：US20230296966A1

公开(公告)日：2023-09-21

申请号：US18021055

申请日：2021-07-19

Applicant: JFE STEEL CORPORATION

Inventor： Takashi IWAMA ,  Kentaro SATO ,  Shinji SAKURAI ,  Kayo TOKIEDA ,  Shohei SHINOZUKA ,  Yuhei AKIYAMA ,  Takashi TANIGUCHI

IPC: G03B17/55 ,  G03B17/02 ,  G03B15/03 ,  G03B17/56

CPC classification number: G03B17/55 ,  G03B17/02 ,  G03B15/03 ,  G03B17/561 ,  G03B2215/0575 ,  G03B2215/0503

Abstract: An object is to closely observe, by means of images of a camera having high performance specifications, changes in a structure due to heating or cooling of the structure to a temperature beyond a service temperature limit of the camera having high performance specifications and returning from that temperature to room temperature. A structure observation device includes: a camera case of a rectangular three-dimensional shape, having a glass window of heat-resistant and/or cold-resistant glass on at least one side of the three-dimensional shape; heat insulating walls covering the camera case except for the glass window; a fluid supply port and a fluid discharge port through which a cooling or warming fluid is circulated into; and a camera that is disposed inside the camera case and captures a still image or a moving image through the glass window and externally outputs or internally stores data of the captured image.