Foldable neck ring device

The utility model provides a foldable neck ring device, and relates to the field of AR equipment accessories, the foldable neck ring device comprises a neck band assembly, a hinge assembly, a control assembly and a battery assembly; when the neck band assembly is horizontally placed, the included angle alpha between the side faces of the two end portions of the neck band assembly and the horizontal plane is larger than 90 degrees. The control assembly and the battery assembly are connected with the two ends of the neck band assembly through hinge assemblies. When the control assembly and the battery assembly are folded inwards relative to the neck band assembly, the bottom of the control assembly and the bottom of the battery assembly can be in lap joint with the neck band assembly. The control assembly and the battery assembly can be folded to a large extent relative to the neck band assembly, so that the size of the folded neck ring device is greatly reduced, and a user can conveniently store or carry the n