A sun visor is an essential automotive component mounted above the windshield that shields drivers and passengers from sunlight glare.
Historical Evolution
The first automotive sun visors appeared in 1924 on the Ford Model T, mounted externally on closed-body versions. By 1931, manufacturers moved sun visors inside vehicles, improving accessibility and adjustability. This shift coincided with the introduction of angled windshields designed to reduce wind resistance.
Design and Construction
Core Components
Modern sun visors consist of a pressboard core with metal mounting hardware. Some manufacturers use molded substrates or polypropylene instead. A bent metal rod serves as the mounting bracket, with the bend maintaining the visor’s position.
Safety Features
In 1956, Ford introduced padded sun visors as part of their Lifeguard safety package. Rambler cars followed suit in 1957, offering padded visors and dashboards for enhanced passenger protection.
Modern Features
Dual Visor System
Contemporary vehicles typically include two sun visors – one for the driver and one for the passenger. These visors pivot to block sunlight from both the windshield and side windows, extending coverage to the B-pillar in some models.
Additional Functions
Many sun visors now incorporate:
- Vanity mirrors with adjustable lighting
- Universal garage door openers
- USB ports
- GPS systems
Common Issues
Sun visors can develop several problems:
- Plastic casing splits around hinges
- Mounting brackets become loose
- Unexpected dropping during driving, which poses a safety risk for taller drivers
Some vehicles, like certain Nissan models, have reported defective visors that unexpectedly fall, potentially obstructing the driver’s vision. Replacement costs can be substantial, with some units priced at $400 or more.
Material Innovation
The visor’s exterior typically matches the vehicle’s interior trim. Manufacturers select materials that complement the cabin’s aesthetics while providing durability and UV protection. Modern visors often incorporate specialized UV-blocking materials to enhance protection against harmful rays.