美国灯的base and shape都有标准。。。

Base:

https://www.bulbs.com/learning/basechart.aspx

Shape:

https://www.bulbs.com/learning/shapesandsizes.aspx

拆一个灯泡下来到附近Home Depot or Lowes去问，找到合适的base and shape再满世界shopping。可以先买一两个试试，不行就退掉。