Why do LED lights have a heatsink? Shouldn't that energy

>>58382025
They contain a power phase with an AC to DC converter, power smoothing, and sometimes a logic chip to control flicker rate, though some use a simple discrete solution instead.
All of that needs to be cooled, and the caps are the weakest part of the design. LED bulbs generally die when the power phase does.

>>58382057
True, but the modern ac->dc->step down is really efficient, and dont need any major heatsink to speak of. That's almost all for the LED. They still do generate plenty of waste heat, but it's several orders of magnitude less waste heat per lumen than incandescents.

If you get one of the bare, ultra high lumen, LEDs that go into an LED bulb, you can power it using a bench supply. You'll find it still needs a sizable heatsink even though it's completely separated now.

>>58382327
Capacitors have a lifespan that is rated at work hours at a given temp. The higher their temp while under load, the shorter their life span.
*ALL* LED light bulbs running on AC need a heatsink. Every single one. If they don't have one then its a shitty bulb that will die inevitably sooner than it should.

>>58382025
Our LED bulb doesn't have that heatsink. Housefire when?

>>58382025
notice how hot a lightbulb is with a heatsink?

guess how much hotter it would be without one