Blackboard and Light Bulbs stock image. Image of flat - 149303747
CPSLIGHTING , Education Lighting
School Lighting - Blackboard Light - CDN LIGHT
Light bulb chalk drawing on blackboard, drawing of light bulb as idea symbol on blackboard, light bulb on blackboard background Stock Illustration | Adobe Stock
Linear Blackboard Light Fixture With Electronic Ballast - China light fixture, fixture | Made-in-China.com