UV Light Irradiation Device Stacked Element Groups

The patent transitions from a planar two-dimensional arrangement of light-emitting elements on a substrate to a three-dimensional stacked structure where multiple light-emitting element groups are arranged vertically across multiple layers. This dimensional change allows the light to be emitted from multiple heights, creating a more concentrated and intense ultraviolet irradiation field per unit area while maintaining sufficient integrated energy through the vertical stacking of elements.

The patent implements a nested structure where multiple light-emitting element groups are stacked within a vertically extended housing, with each layer containing multiple light-emitting elements arranged in a grid pattern. The light-emitting elements are nested within the housing structure, and the sealing member is nested around the entire assembly, creating a compact multi-layer configuration that increases light intensity per unit area through vertical stacking.

The patent resolves the contradiction between structural simplicity and light intensity by introducing a vertical third dimension. Instead of expanding the device footprint horizontally, the light-emitting element groups are stacked vertically within a compact housing, maintaining a simple overall device structure while achieving high light intensity per unit area through the vertical arrangement of multiple light-emitting layers.

The patent combines multiple light-emitting element groups into a single integrated housing structure, merging the functions of multiple light sources into one compact unit. The housing integrates support structures, electrical connections, and sealing for all light-emitting elements, maintaining structural simplicity while achieving high light intensity through the combined output of multiple vertically stacked light-emitting groups.