Why does car glass with heat insulation film have a higher temperature?

[LaDelaney]

Car glass with heat insulation film has a higher temperature because the metal layer in the heat insulation film absorbs heat, leading to an increased temperature on the glass. Below are the relevant explanations: 1. Source of high temperature: Part of the heat inside the car comes from sunlight passing through the windows; another part comes from the diffused heat generated by the car body and interior after absorbing sunlight; and another part comes from the heat produced by internal components such as the engine and chassis. 2. Reason for high temperature: Since there are multiple factors that can cause the temperature inside the car to rise, even with car heat insulation film applied, the glass temperature may still be high. After application, the amount of heat entering through the window glass is significantly reduced, but the metal layer in the heat insulation film absorbs the heat, causing the temperature on the film to be relatively high, which in turn makes the glass temperature higher than other parts of the car.