公开(公告)号：US20240400118A1

公开(公告)日：2024-12-05

申请号：US18677109

申请日：2024-05-29

Applicant: Hitachi, Ltd.

Inventor： Daisuke MUTO ,  Yuki OHSHIMA ,  Narihiro TOMITA ,  Takashi YOSHIZAWA ,  Akitoshi MATSUI ,  Koki NANKAI ,  Shintaro YABE ,  Yuki ICHIKI

IPC: B61D27/00 ,  B61D1/04

Abstract: A rail vehicle has a return flow path structure formed by a lower tube portion, an upper tube portion, a seat, and an opening or a notch of a seat base. When air flows from the inside of a vehicle cabin to an exhaust port connected to an exhaust air flow path under a floor via the return flow path structure, a direction of a flow passing between an outer periphery of the lower tube portion and an inner periphery of the upper tube portion is opposite to a direction of a flow passing through an inner side of the lower tube portion.