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LED Headlights in the Snow?

 
Old 09-27-2012, 02:46 PM
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Default LED Headlights in the Snow?

It may be too early ask, but does anyone have any experience with the LED headlights and falling snow? Specifically, does snow build up on the lens since the LED's don't put out enough heat to melt the snow?
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Old 09-27-2012, 04:30 PM
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That's a good question. I guess if the wind from the car movement can blow it off it would be OK. That would probably work with a powdery snow but I don't know about a wet snow.

These traffic lights didn't fare so well

http://www.huffingtonpost.com/2009/1..._n_393769.html
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Old 09-27-2012, 07:42 PM
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I have them and didn't notice any buildup this past winter. Keep in mind I have the tech specs and the full led,s have cooling fans with motors built in.to each light. Must be some heat being generated
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Old 09-27-2012, 09:08 PM
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Originally Posted by dougpaper View Post
I have them and didn't notice any buildup this past winter. Keep in mind I have the tech specs and the full led,s have cooling fans with motors built in.to each light. Must be some heat being generated
Exactly, although I feel the original design was fan-less, it was as a precaution.

However, the diodes aren't the ones creating the heat, it was the micro-chips. Meaning the light created is barely making any heat, due to the high efficiency.

Lastly, I don't think you'll ever have a problem, the car generates enough heat from the engine, it outlines the whole car.

So to re-cap, LEDS are Cool, Car is Hot!
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Old 09-28-2012, 05:39 AM
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Originally Posted by Metallic-Force View Post
So to re-cap, LEDS are Cool, Car is Hot!
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Old 09-28-2012, 07:01 AM
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Originally Posted by alvin View Post
It may be too early ask, but does anyone have any experience with the LED headlights and falling snow? Specifically, does snow build up on the lens since the LED's don't put out enough heat to melt the snow?
They work just fine, and the led chips produce alot of heat and must be cooled or else they will blow, however that heat does not reach the front of the headlight assembly, so there are fans that pull the heat from the semi-conductors chips and funnel them to the front of the headlight assembly so they work like a conventional headlights and able to melt snow in the winter time.
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Old 09-28-2012, 09:33 PM
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Last edited by Metallic-Force; 09-28-2012 at 11:58 PM.
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Old 03-08-2019, 06:44 AM
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Default LED useless in wet snow!

I have a 2018 A4 Allroad Tecnik and just experienced my first heavy wet snowfall into a head wind, coming down a ski hill in the dark on the west coast. Within 15 minutes I lost So much light that I might as well not them on. The fog lights provided some lighting but only at the corners which helped me see the side of the road.
This is a huge issue and now thinking that in the same circumstances either I will not drive at night or stop frequently to wipe off the snow. Driving down a ski resort mountain in a heavy wet snowstorm one can only go 30 or 40kph so not enough wind to blow off the wet snow that keeps sticking to the headlights! Do headlight wipers need to be implemented?
or spray jets that work with windshield wipers.


Originally Posted by alvin View Post
It may be too early ask, but does anyone have any experience with the LED headlights and falling snow? Specifically, does snow build up on the lens since the LED's don't put out enough heat to melt the snow?
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