Phosphor Wheel Cooling via Segmented Storage Walls

The sealed space is segmented into multiple regions by circumferential wall portions that divide the internal volume. This segmentation creates multiple airflow paths and heat dissipation zones, allowing efficient heat radiation while maintaining the sealed environment that protects against dust adherence.

The circumferential wall portions extend in the axial direction of the phosphor wheel, adding a dimensional element to the sealed space. This creates three-dimensional heat dissipation pathways that enhance thermal management without compromising the sealed structure's protective function.

The circumferential wall portions are integrally formed with the storage member and create passive airflow channels that utilize natural convection and pressure differentials. This self-service mechanism facilitates heat dissipation without requiring additional active components or increasing motor load, thereby avoiding noise generation.

The mechanical blade portion on the rotating phosphor wheel is replaced with stationary circumferential wall portions that create airflow paths. This substitution eliminates the need for mechanical intervention in airflow generation, reducing motor load and associated noise while maintaining effective heat radiation.

The circumferential wall portions create passive cooling channels that facilitate heat dissipation through natural convection and thermal conduction. This self-service cooling mechanism reduces the need for high-speed rotation to manage temperature, thereby reducing motor load and noise while maintaining wavelength conversion efficiency.

The mechanical cooling achieved through high-speed rotation is partially replaced by thermal conduction through the disk and convection through the circumferential wall portions. This substitution reduces the mechanical energy required for cooling, lowering motor load and noise generation while preserving the phosphor layer's thermal management.