| 摘要 |
<p>PROBLEM TO BE SOLVED: To introduce a lamp in a comparatively small bored and meandering tube passage by a method wherein a first member and a second member having a nearly circuit outer periphery respectively are provided separatedly from each other under the condition that the members are connected through a springy material with each other, and the lamp is provided at the central part of the first member. SOLUTION: A pair of a first and a second annular members 1 and 2 having the same diameter as each other are arranged being separated from each other. In addition, these members are connected with each other through a spiral sparingly member 3. To the first member 1, a boss part 10, to which a lamp 4 under the state being connected with a power cable 8 and, at the same time an elastic lot cable 7 are mounted, is provided through stays 9. To the outer peripheries of the first and the second members 1 and 2, wheels 6 are rotatably supported through arms 5. When the lot cable 7 is pushed in a tube, the first and second members 1 and w proceed along the bent part of the tube under the state that the wheels 6 come into contact with the inner surface of the tube. At the bent part, the spiral sparingly material 3 easily deforms, resulting in introducing the direction of the second member 2 to a predetermined direction.</p> |
