In one sense this is true: LEDs are cool to the touch because they generally don’t produce heat in the form of infrared (IR) radiation (unless of course they are IR LEDs).
IR radiation heats the enclosures and surroundings of incandescent bulbs and other sources, making them hot to the touch.
Why do LED lights not get hot?
That’s not to say that heat isn’t at all an issue. LED bulbs do get hot but the heat is dissipated by metal heat sinks that wick away the heat from the light source itself. Keeping them cool with heat sinks or even liquid cooling, as Switch Lighting is doing, is important to ensuring they last as long as advertised.
Why do LED bulbs get so hot?
LED bulbs do get hot, but the heat is pulled away by a heat sink in the base of the bulb. From there, the heat dissipates into the air and the LED bulb stays cool, helping to keep its promise of a very long life.
Are LED lights supposed to get hot?
LED light bulbs might be hot to the touch, but they are nowhere near as hot as CFL, halogen or incandescent bulbs. Furthermore, LEDs do not generate heat as infrared radiation like incandescent bulbs.
Why do LED bulbs have heat sinks?
Heat sinks are an important part of LED lighting because they provide the path for heat to travel from the LED light source to outside elements.