| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an LED head mount structure whereby a coil spring can be surely and easily pressed into a rib root. SOLUTION: A coil spring 6 is in a structure with a wind diameter of a wound part 6d in the vicinity of a terminal end expanded towards a coil terminal end part 6c. A tight wound part 6a of a plurality of the number of turns (for example, 2-3 turns) is provided to a part of the smallest coil diameter of the wound part 6d. The coil diameter is increased from the tight wound part 6a of the wound part 6d towards a coil leading end part 6b. The coil spring 6 can be surely and easily pressed into a root of a cross rib by pressing while rotating the coil spring from the side of the coil terminal end part 6c in a wind direction.</p> |
