Ключевые слова: alternative, bright, bulb, concept, conservation, creative, design, drawing, eco, ecology, economical, economy, efficiency, efficient, electric, electrical, electricity, energy, environment, environmental, equipment, fluorescent, glass, graphic, green, halogen, icon, idea, illuminated, illumination, illustration, incandescent, innovation, invention, isolated, lamp, led, light, lightbulb, modern, power, save, saving, scribble, sign, simple, symbol, technology, white,