Switch box for vehicle door lock device

A switch box for a vehicle door lock device, which is integrally housed in a lock body case and engages with and is fixed to a striker of a vehicle door, comprising:

• a slide pin which has one end abutting against a side surface of a latch that engages with and is fixed to the striker of a vehicle, and which slides in response to a pivot motion of the latch when biased by a spring;
• a slider which is connected and fixed to an other end of the slide pin and on which an elastic slide contact is disposed;
• a pair of terminals which are short-circuited to be connected to each other by the slide contact depending on a slide position of the slider;
• and
• a switch box cover which substantially hermetically covers most of the slide pin, excluding the one end thereof abutting against the side surface of the latch, the spring, the slider, and the terminals in the lock body case,
• wherein the switch box cover has a through hole for ventilation at a position thereof which corresponds to a lower side of one side surface thereof when the switch box cover is attached to the vehicle door.