LEDs and heat - Toyota Yaris Forums

CTScott · 10-22-2009, 09:40 PM

Actually, regular LEDs run cool, but the high output LEDs (>1 Watt) like the Luxeon Stars run very hot and require a heat sink and/or active cooling. You can buy automotive replacement bulbs with the high output LEDs. The automotive ones will use a heat sink for passive cooling and even though they are hot, they are no where near as hot as the incadnescent bulb that they replace.

127.0.0.1 · 01-02-2010, 10:34 AM

Quote:

Originally Posted by CTScott

Actually, regular LEDs run cool, but the high output LEDs (>1 Watt) like the Luxeon Stars run very hot and require a heat sink and/or active cooling. You can buy automotive replacement bulbs with the high output LEDs. The automotive ones will use a heat sink for passive cooling and even though they are hot, they are no where near as hot as the incadnescent bulb that they replace.

I run 700 lumen (5 watt) LED's on my bikes (mtb, road bike) and they indeed get hot. they need heatsinks. yes less hot than incandescent or HID but still hot enough to degrade the life of LED from 100,000 hours to about 400 hours if heat is not managed

led's at the power of interior lighting or side markers don't need heatsinks

10-22-2009, 09:40 PM	#1
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Actually, regular LEDs run cool, but the high output LEDs (>1 Watt) like the Luxeon Stars run very hot and require a heat sink and/or active cooling. You can buy automotive replacement bulbs with the high output LEDs. The automotive ones will use a heat sink for passive cooling and even though they are hot, they are no where near as hot as the incadnescent bulb that they replace.