Along with the rapid development of automobile industry and the improvement of living standards, people in when buying a car is not just focus on automobile power and safety, but also pay more attention to the environment of the car and comfort. Car comfortable performance including car room temperature humidity, cleanliness, humidity, air velocity and noise etc., and room temperature humidity is an important indicator of a matter of comfort, in the hot summer the vehicle under the midday sun exposure, the car has the highest temperature can reach 70 degrees, therefore, in the warmest light vehicles under the environment of various indicators whether meet the requirements of driving comfort is particularly important, day of science and technology for the space of daylight daylight lamp array can be used in vehicle simulation.