Lighting-On Device and Grip Device Therefor

A grip device comprising a chassis, a lower handle arm, a compressing block, an upper handle arm, a press rod, and a link mechanism, wherein

• one end of the press rod is mounted to a first end of the lower handle arm via a first pivot, and the other end of the press rod is provided with a press head;
• one end of the upper handle arm is mounted to the press rod via a second pivot which is positioned between the press head and the first pivot;
• the lower handle arm is mounted on the chassis and is provided with a guiding groove extending in a direction from a first end to a second end of the lower handle arm;
• the compressing block can be slidably mounted to the lower handle arm along a direction in which the guiding groove extends, a spring is disposed between the compressing block and the lower handle arm and applies a thrust force to the compressing block towards a first end of the lower handle arm upon being energized;
• one end of the link mechanism is mounted to the upper handle arm via a third pivot, and the other end of the link mechanism is mounted to the compressing block via a fourth pivot, and the angle between the link mechanism and the lower handle arm which is at the side of the first end of the lower handle arm is an acute angle;
• the first pivot, the second pivot, the third pivot, and the fourth pivot are parallel with each other, and the first pivot is perpendicular to the direction in which the guiding groove extends.