A round filament bulb hanging from a straight wire.

Hanging Filament Bulb 

A turned-on filament light bulb with a wire inside and a screw bottom.

Lit Filament Lightbulb

A round speech bubble with decorative lines or rays around it and a screw-on filament light bulb inside.

A light bulb with lines outside and wires inside.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.

A half circle pendant lamp with a bulb hanging from above by a string.