Do car sun shades work?

[mjb121877]

I'm wondering if the sun blocker things that you put in the windshield of your car work as good reflectors?

 

[LBZ Farmer]

Reflectors... Yeah would work. BUT!!!!!! Most are Flammable, and in my way of thinking, that is a risk not worth it!

 

[ganjak]

Yeah, that's a very good question I've been asking in a while "Do they work?" What I could find on the web is that they are supposed to reflect up to 97% of the UV sunrays and 95+% of the energy radiated by the sun, what of the usable spectrum remains mistery. However I fear that the material that is the actual reflector is just an emergency blanket. So my educated guess is that if you think of using windshield shades better switch to emergency blanket - bigger pieces, pretty cheaper, and as stated above more flammable materials added with no usable function.
I would like to hear others with different opinions.

have fun

 

[mjb121877]

An emergency blanket might also be easier to work with.... I'll give it a try

 

[convex]

Cheap bat wings are barely $20