| 摘要 |
<p>PURPOSE:To enable the inside of a conduit over a wide range to photograph. CONSTITUTION:The title device 1 consists of a self-propelled car 5 consisting of a travel device 2 and a camera box 3, an inspection camera 6 housed within the box 3, and a lighting system 7 provided on the outside of the box 3. The camera 6 has a zoom lens 6a, and the system 7 consists of a tungsten halogen lamp.</p> |
