Articular socket / Lamp socket

When changing normal fluorescent lamp it’s so uncomfortable and hard so we should stretch all of our hands.
A Socket’s hole is too small so it’s difficult to insert and also can’t see well to be hided by the shadow.
'Articular Socket' are much convenient to use in replacing fluorescent lamps due to its vertical position where you simply plug and unplug the terminals. In addition, the luminous socket holes allows you to replace lamps even in the dark.