An active grid device, comprising: - a frame; - a first mobile assembly, comprising at least a first flap capable of pivoting with respect to the frame between a closed position and an open position; - a second mobile assembly comprising at least one second flap capable of pivoting with respect to the frame between a closed position and an open position; - first and second cam tracks; and - a first and a second coupling mechanism connecting the first and second mobile assemblies, respectively to the first and second cam track, each of the first and second coupling mechanisms comprising at least one connecting rod (90, 92); wherein: - the first and second cam tracks are fixed relative to the frame; and - the device also includes: - an operating lever rotatable relative to the frame; and - a first and a second shoe, mobile in translation with respect to the actuating lever, said first and second shoes being able to slide respectively in the first and second cam tracks; the connecting rod (90, 92) of each of the first and second coupling mechanisms being articulated respectively on the first and second shoes; and the first and second shoes being articulated respectively on the first and second cam tracks. - the operating lever can be rotated in relation to the frame between a first, second and third configuration, such as: - in the first configuration, each of the first and second flaps is in the closed position; - in the second configuration, the first flap is in the open position and the second flap is in the closed position; and - in the third configuration, each of the first and second flaps is in the open position. - a frame; - a first mobile assembly, comprising at least a first flap capable of pivoting with respect to the frame between a closed position and an open position; - a second mobile assembly comprising at least one second flap capable of pivoting with respect to the frame between a closed position and an open position; - first and second cam tracks; and - a first and a second coupling mechanism connecting the first and second mobile assemblies, respectively to the first and second cam track, each of the first and second coupling mechanisms comprising at least one connecting rod (90, 92); - the first and second cam tracks are fixed relative to the frame; and - the device also includes: - an operating lever rotatable relative to the frame; and - a first and a second shoe, mobile in translation with respect to the actuating lever, said first and second shoes being able to slide respectively in the first and second cam tracks; the connecting rod (90, 92) of each of the first and second coupling mechanisms being articulated respectively on the first and second shoes; and the first and second shoes being articulated respectively on the first and second cam tracks. - the operating lever can be rotated in relation to the frame between a first, second and third configuration, such as: - in the first configuration, each of the first and second flaps is in the closed position; - in the second configuration, the first flap is in the open position and the second flap is in the closed position; and - in the third configuration, each of the first and second flaps is in the open position. - an operating lever rotatable relative to the frame; and - a first and a second shoe, mobile in translation with respect to the actuating lever, said first and second shoes being able to slide respectively in the first and second cam tracks; the connecting rod (90, 92) of each of the first and second coupling mechanisms being articulated respectively on the first and second shoes; and the first and second shoes being articulated respectively on the first and second cam tracks. - the operating lever can be rotated in relation to the frame between a first, second and third configuration, such as: - in the first configuration, each of the first and second flaps is in the closed position; - in the second configuration, the first flap is in the open position and the second flap is in the closed position; and - in the third configuration, each of the first and second flaps is in the open position. - in the first configuration, each of the first and second flaps is in the closed position; - in the second configuration, the first flap is in the open position and the second flap is in the closed position; and - in the third configuration, each of the first and second flaps is in the open position.