The sunscreen of the car has a certain effect. If the vehicle is parked in the open air and exposed to the sun, it is recommended to use the sunshade. Although the sunshade can not effectively reduce the temperature inside the car, it can effectively reduce the speed of the temperature increase in the car, and also avoid the harm caused by direct sunlight on the dashboard and leather seats in the car.
I believe that in summer, the car owners can't stand the problem of abnormally high temperature inside the car after the car is exposed to the sun. However, the underground parking lot is limited, car owners can only choose to park outdoors, and the vehicle is inevitably exposed to sunlight. Occasionally there is no problem, but the vehicle is exposed to the sun for a long time, and the instrument panel, seats and other components of the vehicle will also be prematurely aged and damaged due to direct sunlight and high temperature "baking".
The function of the sunshade is to directly block the direct sunlight by covering the front windshield. This method is simple and rude, just like you are holding an umbrella outdoors. Although it is still very hot, it will be more comfortable without direct sunlight. The sun shade is cheap, and many people will choose it, but it also has disadvantages, such as troublesome storage, poor fit, and easy light leakage.