Courtyard lamp is a kind of outdoor lighting lamp, usually refers to the outdoor road lighting lamp below 6 meters, its main components are: light source, lamp pole, flange, foundation embedded parts 5 parts. Courtyard lamp has the characteristics of diversity, beauty and beautification and decoration environment, so it is also called landscape courtyard lamp. Mainly used in urban slow lane, narrow lane, residential district, tourist attractions, parks, squares and other public places of outdoor lighting, can prolong the time of people's outdoor activities, improve the safety of property. solar courtyard lamp is a courtyard lamp powered by crystal silicon solar cell, maintenance-free valve-controlled sealed battery (colloidal battery) to store electric energy, ultra-high bright LED lamps as light source, and controlled by intelligent charge-discharge controller, which is used to replace traditional public electric lighting. It can make full use of solar energy resources and has positive significance to ease the situation of conventional energy tension. The installation is simple and convenient, and the operation and maintenance cost is low.