US Patent 10982828 Artificial tree with LED-based lighting systems

A multi-sectional artificial tree with a tree lighting system. The tree includes a DC power converter, and lower and upper tree sections. Each tree section includes a tree frame with groups of branches and light sets in a ratio of one light set per branch. The thin, single-conductor wires of each light set are affixed only to a single branch to prevent bending and breaking. Each group of branches and light sets is positioned at a particular height on the trunk of the tree. An upper tree section includes fewer branches per group, as compared to a lower section, and thus includes fewer light sets per group. The light sets are wired in series from branch-to-branch, though the number of light sets per group varies from section to section. Consequently, a resistive load is used in the upper tree section to adjust a voltage applied to individual light sets.