This is an emergency lighting device based on gravity to provide lighting energy, the purpose is to provide simple operation, reliable performance, energy sustainable lighting in the emergency state, in line with the current world low-carbon era of low-carbon life concept status quo, to provide low emissions, low energy consumption, resource-saving design.At present, the gravity into electricity technology is mature, and the heavy energy conversion parts and lighting parts cost is low, through the telescopic structure to achieve the gravity block movement, the generator generates electricity through the movement, to provide energy for the lighting parts, through the folding structure unfolds into a triangular bracket structure to effectively maintain the stability of the product.The work adopts a triangular prism form to present a solid and stable visual sense, and adopts a metal frame to present a reliable and durable quality sense. The gravity block slides for 15 minutes during the use process, implying a hint of the concept of time.Follow the concept of low-carbon design, meet the needs of society for low-carbon design, and spread the concept of sustainable design.The selection of materials and energy is harmless to the natural environment, the use of the process is not harmful to the human body, the appearance of the design function indication is obvious, the operation is simple, suitable for all kinds of people.