Seatback lock device and vehicle seat

A seatback lock device comprising:

• a lock main body that is coupled to a side portion of a frame of a seatback, so as to be tiltable in a forward direction with respect to a floor section of a vehicle body, and that engages with a striker provided at a side portion of the vehicle body;
• a lever that is arranged at a seat width direction inner side with respect to the lock main body and coupled to the lock main body, and that releases engagement between the lock main body and the striker by being displaced toward a seat upper side;
• a strap that is coupled to the lever and that displaces the lever toward the seat upper side by being pulled;
• a remote cable having a one-end portion of an outer casing thereof fixed to the side portion of the frame, and having an inner wire extending from the one-end portion coupled to the lever, the remote cable displacing the lever toward the seat upper side due to the inner wire being pulled;
• and
• a protection member that includes a wire member fixed to the side portion of the frame and a plate member fixed to the wire member, and that covers the lever from a seat front side.