The effect of the triangular rear window of the car

If you pay close attention, you can easily see that all car models have a fixed triangular glass window at the back. The fixed glass window frame is the part of the glass that cannot be adjusted to open/close or up/down. Depending on the model and design, each car can have 1 or 2 types of fixed glass windows above.

According to car engineers, the small triangular fixed glass door at the back has many little-known uses.

Increased visibility for drivers

Car manufacturers often install a small triangular window next to the A-pillar to avoid blind spots caused by the front windshield tilting too much.

Although the triangular window is small, the driver can still observe the outside of the car through the glass and avoid collisions with obstacles in the blind spot of the viewing angle. If the triangular glass is removed from the car, the size of the A-pillar will be larger. At that time, the opaque A-pillar will block the driver's vision, making it difficult to observe the blind spots on the left and right through the front windshield.

Help ventilate

The triangular window dates back to 1950. At that time, the triangular window acted as a small window to let air in and out of the cabin. This type of window was very popular until air conditioning appeared.

However, with the need to save gas, the purpose of using triangular glass for ventilation in cars is almost gone.

Reduce vibration

The design of the additional triangular frame next to the A-pillar enhances stability and support. Thanks to the triangular window, the rigidity of the A-pillar is stronger, and the structure of the car is also more reasonable.

The addition of the triangular glass door also increases the interior lighting area. However, because it has to fit inside the rear door, the glass door cannot be fully expanded.