US Patent 10271601 Helmet

The helmet has a cap, and a turning assembly and a fastening device assembled on the cap. The helmet is formed as an integral whole and has a simplified and compact structure. A camera is mounted to the fastening device and is held by a lower holder and an upper holder of the turning assembly. A locking panel of the fastening device allows the camera to be easily and quickly mounted onto the cap via the fastening device or removed from the fastening device. With a locking member engaging in or disengaging from one of multiple engaging recesses of a corresponding guiding rod of the turning assembly, a position of the camera relative to the cap can be also easily and quickly adjusted.