A semiconductor light emitting device includes a base substrate, lead electrodes
provided on the base substrate, at least one semiconductor light emitting element
loaded on the base substrate so as to be spaced apart from the lead electrodes
and radiating blue light, a connection member for electrically interconnecting
the electrodes and the semiconductor light emitting element, a reflector extended
from a bottom of the base substrate to a predetermined height for surrounding the
semiconductor light emitting element, and a translucent cover layer formed in the
receiving space for housing the light emitting element, the translucent cover layer
containing a color-shifting substance for absorbing at least a part of blue light
radiated from the light emitting element to radiate a light having a different
wavelength. The reflector is made of a material having high translucency and high
thermal conductivity on a surface thereof so as to reflect the light radiated from
the light emitting element and form a uniform planar light, and the reflector radiates
the heat radiated from the light emitting element to outside so as to cool an inside
of a receiving space for receiving the light emitting element. Thus, the device
emits white light outside by combination of the blue light radiated from the light
emitting element and the light having a different wavelength.
