The rear windshield defrosters seem so much more effective. Is it just the lines across the drivers field of view that makes it decidedly unsafe?
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I think Ford have a patent on it, so for other manufacturers to do it, they’d need to pay a licensing fee to Ford (**if** Ford wanted to let them – they don’t have to).
This is why it’s in Ford vehicles, but not others.
I drove a Ford fiesta in the 90’s that had exactly this. I don’t know why it’s not the norm nowadays, the technology is long here
I drove a Ford fiesta in the 90’s that had exactly this. I don’t know why it’s not the norm nowadays, the technology is long here
I drove a Ford fiesta in the 90’s that had exactly this. I don’t know why it’s not the norm nowadays, the technology is long here
Probably because of the off chance of it suddenly shattering. My parents had a station wagon with a rear window defrost that didn’t heat properly and shattered into thousands of cube shards – twice. Imagine that happening to you in front of your face while doing 60mph down a highway.
Indium-tin oxide (ITO) is a clear conductive coating that is effective as a defog/defrost windshield method. This requires an optical coating which needs an expensive coating system. A company in Toledo makes large conductive glass pieces via a pyrolytic process that imbeds ITO in the glass. I’ve always thought clear conductive windshields would become the norm but expense might be limiting commercial use.
Due diligence: Previous commenter mentioned clear conductive coating approach.
Indium-tin oxide (ITO) is a clear conductive coating that is effective as a defog/defrost windshield method. This requires an optical coating which needs an expensive coating system. A company in Toledo makes large conductive glass pieces via a pyrolytic process that imbeds ITO in the glass. I’ve always thought clear conductive windshields would become the norm but expense might be limiting commercial use.
Due diligence: Previous commenter mentioned clear conductive coating approach.
Indium-tin oxide (ITO) is a clear conductive coating that is effective as a defog/defrost windshield method. This requires an optical coating which needs an expensive coating system. A company in Toledo makes large conductive glass pieces via a pyrolytic process that imbeds ITO in the glass. I’ve always thought clear conductive windshields would become the norm but expense might be limiting commercial use.
Due diligence: Previous commenter mentioned clear conductive coating approach.
As others have stated, heated front windshields are fairly common in certain brands and market areas. You cannot use the same thicker heater filaments in front for visibility reasons. Front windshields utilize way thinner filament in more frequent pattern. Other type is a film type heated wondshield. There is a translucent heating film between the glass laminate. This type is less common but for example Mercedes and Volkswagen sometimes uses this method. Some cars also have the heating elements only under windshield wiper blades to keep them better in working order during winter.
Probably because of the off chance of it suddenly shattering. My parents had a station wagon with a rear window defrost that didn’t heat properly and shattered into thousands of cube shards – twice. Imagine that happening to you in front of your face while doing 60mph down a highway.
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