Draw a well labelled diagram of filament bulb

A well labelled diagram of filament bulb is given below:

The inert gases can be  either nitrogen or Argon. 

The word Filament itself refers to the wire or thread inside the bulb which lights up when you turn it on.

In an incandescent type of bulb, an electric current is passed through a thin metal filament, heating the filament until it glows and produces light. ... After the electricity has made its way through the tungsten filament, it goes down another wire and out of the bulb via the metal portion at the side of the socket.A series of small LED lights are attached to a metal strip. This is what makes up the “filament” of the bulb. The LED lights give off a blue light so the glass is coated with phosphor to make the colour of the light the distinctive amber glow that Edison lights are known for.Where incandescent bulbs fell short in terms of lifelong hours, offering an average of 1,000 hours of light, LEDs have overtaken them with an amazing 50,000 hours. The longevity of LEDs is due in part to its unique characteristic of being a type of solid-state lighting.

LEDs use much less energy than incandescent bulbs because diode light is much more efficient, power-wise, than filament light. LED bulbs use more than 75% less energy than incandescent lighting. ... Bright LED flood lamps use only 11 to 12 watts while creating a light output comparable to a 50-watt incandescent bulb.