楼道里的路灯是公用的,坏了也无人问津,遇到停电时更是整幢楼黑乎乎的一片,给人们上下楼带来很大不便。楼梯脚踏发光带铺设在每级台阶的中间位置,它可以将自然光转换成电能储存起来。晚上人们上下楼 Street lights in the corridor is public, no one cares about the bad, when the blackout is the whole building is dark, giving people a lot of inconvenience to go upstairs and downstairs. Staircase Foot glow laying in the middle of each level of the stairs, it can convert natural light into electricity stored. People go up and down at night