Railway vehicle air-conditioning duct

Provided is a railway vehicle air-conditioning duct that is capable of achieving a more uniform in-cabin temperature distribution through more appropriate volume distribution of conditioned air. A railway vehicle air-conditioning duct (101) that supplies conditioned air generated by an air conditioner (180) into a cabin and that extends in a vehicle length direction (11) at a vehicle ceiling parthas: a main duct (110); a chamber duct (120); a branch duct (130); and a guide part (140). The guide part is lower in height than the main duct, extends to a branch duct from the main duct or a partition wall in the main duct in a vehicle width direction, and supplies to the branch duct a portion of the conditioned air supplied to the main duct. 本发明提供种铁路车辆用空调管道，其能够进行更适当的调和空气的风量分配，使客室内温度分布更均匀。铁路车辆用空调管道(101)在车辆顶棚部沿车长方向(11)延伸，并将由空调装置(180)生成的调和空气供给到客室内，铁路车辆用空调管道(101)具有主管道(110)、腔室管道(120)、分支管道(130)、以及引导部(140)，引导部低于主管道的高度，且在车宽方向上从主管道或主管道内的分隔壁延伸至分支管道，将向主管道供给的调和空气的部分向分支管道供给。