Ключевые слова: abstract, background, bulb, bulb lamp, concept, conceptual, construct, construction, detail, different, diversity, emergency, energy, environment, evacuation, exit, exterior, glow, green, hazardous, industrial, industry, info, information, lamp, led, light, line, message, metal, modern, new, nobody, outdoor, plastic, plenty, power, red, safety, security, sign, signboard, silver, stop, stress, technology, text, wall, warn,