Patent ID: 7960874

Claim:
A cooling device of a linear motor for a vehicle incorporated in a vehicle running on rail tracks at a lower portion so as to oppose a secondary side of a linear motor laid on the rail tracks and configured to cool a primary side of the linear motor having an iron core that is long in a running direction and a coil accommodated in a slot of the iron core, comprising: an elongate cover that covers end portions of the coil exposed from both side faces of the iron core in a longitudinal direction; blower means for forcing a current of cooling air inside the cover; and a partition plate that divides an inside of the cover into an upper space and a lower space, wherein: the upper space divided by the partition plate is used as a ventilation portion through which the current of cooling air is forced and the lower space is used as a cooling portion in which the end portions of the coil are accommodated and cooled; a slit is formed almost along a full length of the partition plate on a side closer to the iron core in a direction parallel to the longitudinal direction of the iron core for bringing the ventilation portion and the cooling portion into communication with each other; and a vent is provided in a lower portion of the cooling portion by making an open space formed from the iron core.