Fan-shaped laser beam emission device

The invention relates to a fan-shaped laser beam emission device, which comprises a laser semiconductor assembly, a protection mechanism and a posture adjusting mechanism, wherein the laser semiconductor assembly comprises a power supply module, a semiconductor emission source and an optical lens module; the posture adjusting mechanism comprises a base, an adjusting and positioning rod, a spherical articulating body, a horizontal crossbeam and an anchor rod connecting piece; the laser semiconductor assembly arranged in the protection mechanism emits a fan-shaped laser beam; and the posture adjusting mechanism can enable the fan-shaped laser beam to pitch, deflect and rotate, and move up and down as well as left and right. The whole set of fan-shaped laser beam emission device can be applied under a coal mine.