What are the functions of street lamps, lighthouses, traffic lights, neon lights, searchlights and shadowless lights?

Street lamp: used for street lighting to prevent safety accidents due to insufficient light at night. Lighthouse: mainly used for navigation and aviation, used at night, with navigation function to prevent ships or planes from colliding with the ground due to light problems. Traffic lights: direct traffic in busy traffic areas. Searchlight: used for searching and lighting. But the lighting range is not large, but the light is very strong and the place is very clear. Shadowless lamp: it is a kind of lamp unique to hospitals. It is used in surgery. It is surrounded by a plurality of lamps. Strong light beauty has a dead angle, which can make the surgical site have no shadow during the operation. Neon lamp: bright colors and many styles are used to attract people's creativity, mostly used in signboard advertisements. .

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