Patent ID: 11927323
Assignee: APUTURE IMAGING INDUSTRIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 14:
15. The lighting device as claimed in claim 14, wherein the first gear assembly comprises an annular first gear, and the first gear is an internal gear;
the second gear assembly comprises a second gear and a first transmission rod rotatably connected with second gear, an end of the first transmission rod is fixedly connected with the first lens assembly, and the second gear meshes with the first gear;
the third gear assembly comprises a third gear and a second transmission rod fixedly connected with the third gear; the connecting frame comprises a transmission part, the second transmission rod is rotatably connected with the transmission part; the third gear meshes with the first gear;
the second gear and the third gear are disposed at interval along a circumferential direction of the first gear and are both external gears;
a surface of the second gear in contact with the first transmission rod is provided with a first internal thread, a surface of the first transmission rod in contact with the second gear is provided with a first external thread, the first internal thread matches the first external thread;
a surface of the transmission part in contact with the second transmission rod is provided with a second internal thread, a surface of the second transmission rod in contact with the transmission part is provided with a second external thread, and the second internal thread matches the second external thread; and
a rotating direction of the first internal thread is opposite to a rotating direction of the second internal thread.