| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pantograph low in air noise.SOLUTION: The pantograph has a framework 3 for supporting a collector shoe liftably to an underframe and a wind shield 5 for covering the underframe and comprises, in the wind shield 5, a key device 6 for keeping a state where the framework 3 is folded. The wind shield 5 has an opening part 51 and a lid part 7 for closing the opening part 51. The lid part 7, while not being pushed from outside the wind shield 5, closes the opening part 51, and is displaced toward inside the wind shield 5 by being pushed from outside the wind shield 5. The lid part 7 is displaced toward inside the wind shield 5 so that the key device 6 releases the state where the framework 3 is folded. This causes the opening part 51 to be closed with the lid part 7 so as not to generate aerodynamic sound during current collection of the pantograph.</p> |
