The invention relates to a no-reflection high-efficient-
luminescence unitary-WLED power-capacity-expansion high-power 
light source. A plurality of blue-light BLED chips are welded on a radiating base plate. The surfaces of the BLED chips are coated with 
silica gel phosphor powder, which forms white-light WLED illuminants. The high-light-
transmittance and high-intensity industrial plastic PC is made into a thin isopachous hemisphere-shaped casing. The PC casing is filled with high-transparency 
silicon gel which has the same light 
transmittance as the PC, which forms a 
silica gel hemispherical lens. The 
silica gel lens is packaged above the 
phosphor powder along the centre to form the no-reflection and high-efficient-
luminescence unitary WLED 
light source. A plurality of unitary WLED light sources are assembled to a high-power WLED 
light source by capacity expansion. The light source can be make into a street lamp, an emergency lighting lamp, a safety lighting lamp for mine roadway, a mine cap lamp, a safety lighting lamp for subway and airport, an indoor lighting lamp and other WLED lighting lamps. The invention has the advantages of scientifically reasonable structure, low production cost, good radiating property, low 
power consumption, high efficient 
luminescence, long service life and other advantages.