The lamp PL-Y it is an idea of Unleaded based on the creation of light bulbs from modules, or with the use of only one of them.
These are modules with a "Y" shape that can be joined together in a way that allows users to create their own design, installing one or several pieces, either on the wall or on the ceiling. They are very versatile, simple and creative.
More information: Unleaded
Via: The Design blog