PURPOSE: To make unnecessary the arrangement space setting of a key cylinder by arranging the key cylinder to a sash section of the upper side of a lock device body through a rod, and coupling the upper end of the rod with a lever section of the key cylinder.

CONSTITUTION: A door lock device is so constituted that a key cylinder 44 is coupled with a lock device 40 through a rod and that locking and unlocking is made by operation of the key cylinder 44. The key cylinder 44 is placed to a sash vertical section 22 of the upper side of a lock device body 40. The rod 42 is extended upward of a door body 22 along the rear 43 of a glass run 31 with an operation piece 41 as the starting point, and the upper end thereof is coupled with a lever section 45 of the key cylinder 44. After that, the lever section 45 is turned by operation of the key cylinder, the rod 42 makes an up-and-down motion to turn the operation piece 41, and locking and unlocking are made. According to the constitution, flush surface efficiency can be improved.