Pan tilt drive device and camera device

A pan tilt drive device comprising:

• a board;
• a drive worm that is rotatably supported by the board while a rotation center thereof is perpendicular to the board;
• a terminal worm wheel that is rotatably disposed relative to the board while a rotation center thereof is perpendicular to the board;
• a holder plate that has a planar portion facing the board;
• a shaft that is rotatably supported while a rotation center thereof is parallel to the holder plate;
• an intermediate worm wheel that is fixed to one end of the shaft, and that meshes with the drive worm;
• an intermediate worm that is fixed to the other end of the shaft, and that meshes with the terminal worm wheel;
• a pivot mechanism that supports the holder plate so as to be pivotable around a pivot center perpendicular to the board;
• and
• a biasing member that biases the holder plate in a direction close to the drive worm and the terminal worm wheel.