Abstract: A lighting module having at least a semitransparent cover and at least one light emitting diode oriented to emit light through the semitransparent cover. Each light emitting diode is positioned a minimum distance from an inner surface of the semitransparent cover.

Abstract: A ventilation assembly having a main housing that can be pre-installed in a wall or ceiling aperture. A fan assembly can be inserted through the aperture and releasably mounted within the main housing. The fan assembly can be removed from the main housing and replaced without removing the main housing from the wall or ceiling. An accessory component can be releasably mounted to the fan assembly either through the aperture when the fan assembly is mounted or prior to installation of the fan assembly.

Abstract: A ventilation unit for installation in a ventilation system. The ventilation unit can include a motor coupled to a fan element and a power source. The ventilation unit can also include a calibration module having one of a voltage and current regulator for adjusting the performance of the ventilation unit based on at least one characteristic of the ventilation system.

Abstract: Embodiments of the invention provide a lighting and ventilating system including a main housing. The main housing can include an inlet through which air can be received within the main housing and an outlet through which the air can exit the main housing. A fan wheel can be supported in the main housing and it can be operable to generate a flow of air. A grille can be coupled to the main housing and the grille can comprise a plurality of apertures and a second set of illumination devices. The system further can include a lamp housing coupled to the grille, the lamp housing can include a first set of illumination devices. Also, a plate can be coupled to the grille so that the plate is adjacent to the second set of illumination devices.

Abstract: Some embodiments provide an illumination system with an outer housing including a base, a central housing pivotably coupled to the base including a fluid inlet, and an upper housing including a fluid outlet. The inner housing defines a chamber and is coupled to the base, and includes a fluid aperture adjacent to the base, and a fluid aperture adjacent to the upper housing and a viewing aperture. The chamber houses an evaporator system not visible through the outer housing, and an illumination device. Some embodiments include a repellent system with a base including a fluid inlet pivotably coupled to a main housing enclosing an inner region, and including an upper portion with at least one fluid outlet. In some embodiments, an evaporator system within the inner region is not visible through the main housing. Some embodiments include an evaporator assembly that includes a lockable evaporator support to render the system non-refillable.