Abstract: Disclosed is a lamp having a dynamic starry sky effect. The lamp includes a lamp frame, and a first light source, optical integrating lenses, a roller beam splitter, a starry sky laser assembly and a starry sky mirror disc, where the optical integrating lenses are configured to focus light emitted by the first light source into strip-shaped light spots and transmit the strip-shaped light spots formed through focusing to the roller beam splitter at a front part in a shining direction; the roller beam splitter is configured to form the light into nonlinear dynamic strip-shaped light spots during rotation; the starry sky laser assembly includes a second light source; the starry sky mirror disc is configured to reflect light generated by the second light source; and the light dots and the strip-shaped light spots are superposed and combined together to form the dynamic starry sky effect.

Abstract: A rotating assembly comprises a rotary shaft, an accommodating body and a position-limiting switch. An outer wall of the rotary shaft includes a first tenon and a second tenon. The accommodating body includes a matching hole for the first tenon to insert and rotate therein. An inner wall of the matching hole includes a convex rib. By rotating the rotary shaft, a side wall of the first tenon and a side wall of the convex rib butt against or separate from each other, so that in an axial direction of the rotary shaft, the rotary shaft is fixed or movable relative to the accommodating body. When the side wall of the first tenon and the side wall of the convex rib butt against each other, the position-limiting switch and the second tenon are clamped together to prevent the rotary shaft from rotating relative to the accommodating body.

Abstract: A rotating assembly and a handle having the same are disclosed. The rotating assembly comprises a rotary shaft (1), an accommodating body (2) and a position-limiting switch (3). An outer wall of the rotary shaft (1) is provided with a first tenon (11) and a second tenon (12). The accommodating body (2) is provided with a matching hole (21) for the first tenon (11) to insert and rotate therein. An inner wall of the matching hole (21) is provided with a convex rib (22). By rotating the rotary shaft (1), a side wall of the first tenon (11) and a side wall of the convex rib (22) butt against or separate from each other, so that in an axial direction of the rotary shaft (1), the rotary shaft (1) is fixed or movable relative to the accommodating body (2).