Shadowless lamp LED annular light source and manufacturing method of heat dissipation structure thereof

The invention discloses a shadowless lamp LED annular light source and a manufacturing method of a heat dissipation structure thereof. The manufacturing method comprises the following steps: 1, manufacturing a radiator base of the LED annular light source; 2, manufacturing an LED annular light source; 3, manufacturing an LED annular light source radiator; and 4, carrying out heat dissipation analysis by using structural software and thermal analysis software, measuring physical data by combining a thermal imager, and determining the fine structures of the LED annular light source and the heatdissipater. According to the invention, the LED chip is directly bound on the metal printed circuit board, so that the thermal resistance level is reduced, and the heat is effectively transferred. Theadvantage of small size of the LED chip is fully utilized, the diameter and the width of the annular light source are accurately reduced, the focusing lens ring and the inner side surface of the groove are adopted for reflect