Abstract: Disclosed is a plug-in lamp with a disordered stem bundling device, including a plug-in stake and a bundling device, wherein an unburied end of the plug-in stake is provided with a mounting portion with a built-in main control board, and a plurality of strip-shaped imitation flower stem connectors are arranged around a side edge of the mounting portion; a plurality of notches for inserting the imitation flower stem connectors are arranged around an edge of the bundling device, and the spacing between any two adjacent notches is unequal. Through the cooperation of the bundling device and the imitation flower stem connectors, the imitation flower stem connectors are in a disorderly hanging state, making the plug-in lamp have a better decoration effect.

Abstract: A photovoltaic lamp comprises a photovoltaic cover and a lamp body. The photovoltaic cover covers a side away from a light-emitting surface of the lamp body. A receiving groove is formed in a side, away from the lamp body, of the photovoltaic cover. A glass cover is fixedly attached to an opening of the receiving groove with an UV adhesive. A silicon cell is arranged between the glass cover and the bottom of the receiving groove. The glass cover together with the UV adhesive is used as a packaging structure of the silicon cell, thus improving the photoelectric conversion efficiency of the silicon cell; and the glass cover is small in deformation, unlikely to be damaged and easy to clean, thus reducing the production input, shortening the production time, and improving the production efficiency and the stability of the high-quality output of products.

Abstract: The invention discloses a universal sun-tracking adjustment device, method and system, which are applied to a solar lamp with a universal sun-tracking adjustment device. The solar lamp comprises a lamp body and a lamp holder. The universal sun-tracking adjustment device comprises a lamp body, a lamp holder and an adjusting device. Light intensity information can be acquired by photosensitive sensors on the lamp body and be transmitted to a main control circuit board, and the main control circuit board can control the adjusting device to change the angle of a solar photovoltaic panel on the lamp body with the change of the position of the sun, such that the charging efficiency of the solar photovoltaic panel is improved.