Patent ID: 7180240

Claim:
A white light emitting device comprising: a case body having an empty recess, and inside wall of the recess having a light reflection surface; a blue light emitting element mounted on a bottom of the empty recess; the recess being formed into a cup shape having an inclined surface open in a light emitting direction; a cover member made of transparent resin and secured to the case body to enclose the empty recess so as to face the blue light emitting element; the cover member having an inclined peripheral wall in engagement with the inclined surface of the recess, and being spaced from the bottom of the recess on which the blue light emitting element is mounted; fluorescent material which has a function of converting wavelength of light emitted from the blue light emitting element to adjust chromaticity of the light, and luminance reducing material which has a function of adjusting the luminance of the light, which are mixed in the cover member, wherein the cover member has arms which are engaged with grooves in the case body, and wherein a projection is formed on an arm of the cover member, the projection being engaged with an engaging hole formed in a groove of the case body.