While not strictly an LED light parts can be made to be LED. The concept here is that now as we move away from incandescent lighting towards lights which require a ballast or reduction in voltage from the standard 110V or 220V, we find that we have many parts which now are difficult to recycle.
This concept takes into account that one but not both parts of the light fail at any given time. By being able to replace just the failed part, with the same, or different wattage, or lighting elements, would be a great way to reduce waste going into land fill and energy used to create or recycle failed parts.
If i buy and burn out a standard CFC bulb, I have to recycle the whole unit. With this idea in production, I could replace just the fluorescent tube. I could replace it with the same wattage or a higher wattage. If I decide I want red, blue or green light for a special occasion, the cost of me buying the tubes in packages would be less likely to make me think twice over having to buy whole bulbs. I could decide to purchase a task specific tube be it a fluorescent or LED.
I envision speciality plug ins with articulated heads, shields and shades, handles and adjustments, all designed and sold like miniature lights.
When they do finally need to be recycled, the cost would be lower as all the glass is handled in one way and the ballast in another... No longer would there have to be a complex recycling process for a device which is not designed for disassembly. How long will it be before light manufacturers are made to be responsible for the disposal of their products at the end of their life cycles like refrigerators, or other appliances?
The concept of the light bulb just moved down a couple centimetres from the threaded to the element.