Illuminating device
View Patent ↗An illuminating device has a solid light-emitting element module and a phosphor module joined to the solid light-emitting element module. The solid light-emitting element module has a plurality of the solid light-emitting elements. The phosphor module has a plurality of phosphor-containing parts corresponding to the individual solid light-emitting elements. Thus, a light-emitting part is provided, which has more than one kind of luminescence sources having the solid light-emitting element and the phosphor-containing part. An illumination intensity of a composite light is 150 lux or more at a distance of 30 cm perpendicularly from the light-emitting surface of the light-emitting part.
1. An illuminating device comprising:
a light-emitting part having more than one kind of luminescence sources disposed integrally, each kind of which emits a primary light with a different wavelength,
wherein each luminescence source includes a solid light-emitting element and a phosphor,
the primary light emitted from the luminescence sources are mixed as a composite light at a distance of at least 3 cm from a light emitting surface,
an illumination intensity of the composite light at a distance of 30 cm from a light-emitting surface of said light-emitting part in a perpendicular direction is 150 lux or more,
each luminescence source comprises a solid light-emitting element module formed by assembling said solid light-emitting elements as a solid light-emitting element module and a phosphor module formed by assembling said phosphors as a phosphor module, said solid light-emitting element module includes a plurality of said solid light-emitting elements, said phosphor module contains at least one phosphor at a position corresponding to each of said plurality of solid light-emitting elements, said solid light-emitting element module and said phosphor module are joined to constitute a light-emitting part where said more than one kind of luminescence sources are disposed integrally, said phosphor module is separately removable from the illuminating device, and said phosphor module has a phosphor-containing part and a transparent base which is a support for the phosphor-containing part.
2. The illuminating device according to claim 1 , wherein the composite light is white when it is observed at a distance of at least 10 cm from the light-emitting surface of said light-emitting part in a perpendicular direction.
3. The illuminating device according to claim 1 or 2 , wherein an area of a light-outgoing part of said luminescence sources is 0.1 mm 2 to 100 mm 2 ; said luminescence sources emit a light having emission peak wavelengths in a first wavelength range of 430 nm or more and less than 500 nm, a second wavelength range of 500 nm or more and less than 580 nm and a third wavelength range of 580 nm or more and 700 nm or less; and an energy ratio of the light-outgoing part of said luminescence sources is E 1 :E 2 :E 3 =5 to 90:5 to 90:5 to 90 where an energy of a light having an emission peak wavelength in said first wavelength range is E 1 , an energy of a light having an emission peak wavelength in said second wavelength range is E 2 and an energy of a light having an emission peak wavelength in said third wavelength range is E 3 .
4. The illuminating device according to claim 3 , further comprising a controller controlling the driving conditions of said luminescence sources for each of said first to third wavelength ranges.
5. The illuminating device according to claim 1 , wherein said solid light-emitting element module comprises a base and a solid light-emitting element disposed on said base.
6. The illuminating device according to claim 1 , wherein said base is a transparent sheet or plate.