LED light source with high luminous intensity

A light-emitting diode (LED) light source, comprising;

• a support, wherein a light-emitting area is provided on the support;
• a plurality of LED chips disposed on the light-emitting area, the LED chips being spaced from one another, a top of each LED chip having a top light-emitting surface, and each LED chip having a plurality of side light-emitting surfaces;
• a reflective layer disposed on the light-emitting area, the reflective layer forming a plurality of enclosing walls, each enclosing wall surrounding a single LED chip, with a gap between the side light-emitting surfaces of each LED chip and its associated enclosing wall, where each enclosing wall has a height approximately equal to a height of each LED;
• and
• along a height direction of each enclosing wall for each LED chip, the enclosing wall is inclined outwards away from the LED chip to form a curved surface, such that, when light emitted from the side light-emitting surfaces of the LED chip irradiates the enclosing wall and the curved surface, the enclosing wall reflects light emitted from the side light-emitting surfaces in multiple angular directions, so that the light irradiates outwards away from the light-emitting area,
• wherein the enclosing wall is provided with at least three differently inclined surfaces, where each inclined surface has a flat surface with an angle different from other inclined surfaces, each of the inclined surfaces being inclined outwards away from the LED chip along the height direction of the enclosing wall, and
• wherein the enclosing wall for each LED chip comprises a rounded convex lower section.