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"Firefly" LED light / light bulb

This design is inspired from an old Chinese story that a diligent kid in an impoverished family collect a bag of fireflies as light source for night study because his family cannot afford him a lamp. In this design, LED solar bulb replaces the firefly. Each illuminant unit includes a transparent shell, solar panel and battery, micro PCB board, and hightlight LED. Users merely need to leave them under sunshine during daytime, and then they will automatically turn illuminant while the environment is getting dark. With the assistive kits and user’s imagination, this LED light can be widely used for various home/outdoor applications.


Univ. of Illimois Urbana-Champaign

Univ. of Illimois Urbana-Champaign
Industrial Design
Urbana, United States

William Bullock


Zhang, Zhongren

Zhang, Zhongren
Urbana, United States

Zhongren Zhang