Light-emitting device with phosphor excited by blue excitation light

A light-emitting device, comprising:

• a light-emitting element emitting blue excitation light;
• and
• a first phosphor excited by the blue excitation light and emitting fluorescence, a peak wavelength of the fluorescence being not shorter than 520 nm and shorter than 660 nm, an x coordinate of chromaticity of the fluorescence being increased and a y coordinate of chromaticity of the fluorescence being decreased when an x coordinate of chromaticity of the blue excitation light being decreased and a y coordinate of chromaticity of the blue excitation light being increased, the first phosphor being one of a yellow phosphor emitting yellow fluorescence, a green phosphor emitting green fluorescence, a yellow-green/yellow phosphor emitting yellow-green/yellow fluorescence and a red phosphor emitting red fluorescence.