Sunshade for construction machinery has a practical help in reducing the temperature in the cab, and this effect comes from its effective blocking of direct sunlight. When working outdoors, the infrared rays in the sun will carry a lot of heat and directly shine on the seats, dashboards, steering wheels and other parts in the cab, causing these objects to absorb heat and increase in temperature, which in turn causes the temperature in the entire cab to rise. The sun visor reduces the area of direct sunlight entering the cab by blocking part of the front windshield and side windows, reducing the input of heat from the source, and laying the foundation for controlling the temperature in the cab.
The material properties of the sun visor also enhance its cooling effect. High-quality sunshade for construction machinery is usually made of materials with heat insulation properties. These materials can not only block light, but also reduce heat transfer. When sunlight shines on the sun visor, most of the heat will be absorbed or reflected by the sun visor instead of being conducted into the cab through the sun visor. This heat insulation capacity significantly slows down the heating rate in the cab, and the indoor temperature can be kept at a relatively low level even under long-term exposure.
In actual operation, the sun visor can reduce the local high temperature in the cab caused by direct sunlight. For example, if the driver's seat is exposed to direct sunlight for a long time, the surface temperature will become very high, affecting the driving comfort. After the sun visor is blocked, the seat avoids direct exposure to the sun, the temperature will not rise excessively, and the driver will not feel burning when touching it. At the same time, the temperature of components such as the instrument panel will also be reduced due to the protection of the sun visor, reducing the heat dissipation of these components to the surrounding environment, and indirectly maintaining the temperature balance in the cab.
The sun visor can also cooperate with the ventilation system in the cab to improve the cooling efficiency. When the sun visor blocks most of the heat from the sun, the ventilation device in the cab can more easily discharge the accumulated heat. If there is no sun visor, a large amount of heat continues to enter, and the ventilation system needs to continuously process the newly input heat, and the cooling effect will be greatly reduced. With the help of the sun visor, the ventilation system can more effectively maintain the circulation of indoor air, control the temperature within a more comfortable range, and reduce the discomfort caused by high temperature during operation.
The cooling effect of the sun visor can be reflected in different weather conditions. Even in cloudy weather, sunlight will still transfer heat through the clouds. The sun visor can block the heat brought by these scattered rays and prevent the temperature in the cab from rising slowly. In the hot summer, the intensity of sunlight is high, and the role of the sun visor is more prominent. It can significantly reduce the temperature rise in the cab, so that the driver does not have to stay in a high temperature environment for a long time, reduce the distraction caused by stuffiness, and improve the safety of the operation.
The sun visor regulates the temperature in the cab, which is also reflected in reducing the burden on the air conditioning system. If there is no sun visor, the temperature in the cab is too high, and the air conditioner needs to continue to run at high intensity to lower the temperature, which not only consumes more energy, but also may affect the service life due to long-term high-load work. The sun visor reduces the initial temperature in the room, and the air conditioner can achieve the ideal cooling effect without running at full load, which not only saves energy, but also extends the use time of the air conditioning system, and improves the overall operation efficiency of the construction machinery from the side.
From the actual experience of the driver, the cooling effect brought by the sun visor is intuitive and perceptible. Without a sunshade, the cab will become hot and stuffy due to direct sunlight, and the driver will easily become irritable and tired. After installing the sunshade, the temperature in the cab is significantly reduced, the stuffiness is reduced, and the driver can operate the equipment in a more comfortable environment and maintain a good working state, which has a positive significance for improving work efficiency and ensuring work safety. Therefore, the actual help of sunshade for construction machinery in reducing the temperature in the cab cannot be ignored.
