Patent ID: 7909519

Claim:
A single-lens reflex camera including a mirror driving device comprising: a movable reflective mirror; a first biasing spring that provides pivot and bias for lowering the movable reflective mirror; a drive lever arranged parallel to a side plate of a mirror box and arranged reciprocably pivotable along the side plate to perform a shutter charge drive and an up and down drive of the movable reflective mirror; a second biasing spring that pivots and biases the drive lever in a direction in which the movable reflective mirror goes up; a locking lever arranged parallel to the side plate and swingable with a pivoting shaft as the pivot center, the pivoting shaft being arranged on the drive lever; a mirror up and down lever arranged parallel to the side plate, arranged reciprocably pivotable along with the pivot of the drive lever, engaged with the locking lever when raising the movable reflective mirror, the mirror up and down lever pivoting with the drive lever to raise the movable reflective mirror with the biasing force of the second biasing spring against the biasing force of the first biasing spring, the mirror up and down lever releasing the engagement with the locking lever when lowering the movable reflective mirror, and the mirror up and down lever pivoting in the direction opposite the pivot direction of when raising the movable reflective mirror with the biasing force of the first biasing spring to lower the movable reflective mirror; a locking spring that biases in a direction in which the locking lever engages with the mirror up and down lever; a charge gear that includes a charge cam for pivoting the drive lever in the shutter charge direction while maintaining the down state of the movable reflective mirror against the biasing force of the second biasing spring and a release boss for releasing the engagement between the locking lever and the mirror up and down lever and that pivots parallel to the side plate; a drive motor for driving the charge gear, the drive motor being arranged outside the side of the controlling mechanism of the shutter device; and a gear box provided between the charge gear and the drive motor, the gear box driving the charge gear directly.