A recreational vehicle air conditioner (RVAC) includes a ceiling-mount indoor panel positioned over an opening in the ceiling of a recreational vehicle and a control box assembly including a first box portion and a second box portion. The first box portion is positioned above the ceiling-mount indoor panel and the second box portion is pivotally connected to the first box portion with a hinge, such that it is pivotable between a closed configuration and an open configuration. The ceiling-mount indoor panel defines a control box recess that at least partially receives the second box portion when in the open configuration and a blank plate covers the control box recess when the second box portion is in the closed configuration.

A riding vehicle is provided with a downdraft fan assembly mounted on a vehicle roll bar for providing a flow of ambient air over the vehicle operator and a canopy carried by the fan assembly and providing solar and precipitation protection for the operator.

A vent for mobile living quarters has a base and a cover coupled to the base. The cover is connected to the base and pivots about a hinge by a mechanism that is coupled to a moving bar. The moving bar is attached to the cover by fasteners on one end and an alignment tab on the opposite end. The cover is user-replaceable from the top side without having to move or disconnect the mechanism. To replace the cover, fasteners are removed and the cover is pivoted away from the moving bar, where the alignment tab disengages from the cover. The cover is then slidable along the hinge to completely remove the cover from the base. A new replacement cover is slid along the hinge and the alignment tab is engaged with the replacement cover. The cover is pivoted down to a closed position and the fasteners are reinstalled.

An on-vehicle air conditioner includes a suction port disposed on a ceiling of a vehicle cabin to suction air within the vehicle cabin, a door discharge port disposed at an upper end of a door opening portion located on a wall face of the vehicle to discharge air downward, and an upper duct configured to guide to the door discharge port the air suctioned by the suction port.

A vent for mobile living quarters has a base and a cover coupled to the base. The cover is connected to the base and pivots about a hinge by a mechanism that is coupled to a moving bar. The moving bar is attached to the cover by fasteners on one end and an alignment tab on the opposite end. The cover is user-replaceable from the top side without having to move or disconnect the mechanism. To replace the cover, fasteners are removed and the cover is pivoted away from the moving bar, where the alignment tab disengages from the cover. The cover is then slidable along the hinge to completely remove the cover from the base. A new replacement cover is slid along the hinge and the alignment tab is engaged with the replacement cover. The cover is pivoted down to a closed position and the fasteners are reinstalled.

Methods and apparatus are provided for active vehicle cabin occupant protection system. The method includes detecting a vehicle cabin temperature using a cabin thermal sensor, engaging a vehicle fan and opening a vehicle outside air ventilation duct in response to the vehicle cabin temperature exceeding a first threshold temperature, and starting a vehicle engine and engaging a vehicle air conditioning system in response to the vehicle cabin temperature exceeding a second threshold temperature wherein the second threshold temperature is greater than the first threshold temperature.

A combination of a roof top air conditioning unit, the combination comprising a roof top unit, a roof, connection air ducts and an air distribution box, wherein the roof top unit is disposed on an outer wall surface of the roof, the roof top unit having a base pan provided with an air outlet; the air distribution box disposed on an inner wall surface of the roof, the air distribution box provided with an air inlet upper duct; the plurality of connection air ducts communicating the air outlet of the roof top unit with the air inlet upper duct of the air distribution box via the opening of the roof, characterized in that an adjustment portion for adjusting a roof thickness gap is provided around the air outlet of the base pan. This combination simplifies the complexity of assembly, such that the mounting process is simpler, and thus the cost is also reduced.

A roof assembly for a vehicle cabin, particularly for the cabin of an agricultural machine, comprising a housing of plastic material and an air conditioning unit housed within the housing, and at least one air inlet fluidically connected to the air conditioning unit and arranged at a periphery of the housing, and a filter arranged downstream of the air inlet. An air inlet shield is arranged at the air inlet, said air inlet shield being mounted to the periphery of the housing and sealingly mounted to the air inlet, the air inlet shield comprising a pair of shaped plates of plastic material, peripherally welded to each other, between which a chamber fluidically communicating with the filter and with the outside of the roof assembly is defined.

A riding vehicle is provided with a downdraft fan assembly mounted on a vehicle roll bar for providing a flow of ambient air over the vehicle operator and a canopy carried by the fan assembly and providing solar and precipitation protection for the operator.

An overhead automatic Heating, Ventilation, and Air Conditioning (HVAC) apparatus can be installed in an overhead surface within various types of vehicles, structures, and buildings, in order to maintain comfortable temperature inside of the respective environment. The overhead automatic HVAC apparatus can be installed in the roof of an automobile, allowing the driver to return to a comfortable temperature. Also this provides safety, preventing a child left inside of the automobile from being harmed due to extreme temperatures. The overhead automatic HVAC apparatus can be installed in a roof of a military vehicle, such as an High Mobility Multipurpose Wheeled Vehicle (HMMWV), or the ceiling of an office inside of a commercial building. The overhead automatic HVAC apparatus can be self-powered, including a battery and a solar-powered generator which allows the overhead automatic HVAC apparatus to run when conventional AC units are off, reduces costs, and power consumption.