ILLUMINATION DEVICE, CEILING FRAME THEREWITH, AND SYSTEM CEILING

PROBLEM TO BE SOLVED: To provide an illumination device, a ceiling frame therewith, and a system ceiling excellent in efficiency for space layout, while ensuring the insulation performance of a power-supply substrate and a circuit substrate. SOLUTION: The illuminating device 9 has power-supply substrates 50, disposed at both end sides in the longitudinal direction of a long-length first housing 11, with a housing recess 10 for housing both an illuminating module 8 and a power-supply substrate 50; and the illuminating module 8, disposed in between the power-supply substrates 50. The illumination module 8 has a circuit substrate 20 that drives a luminous diode, disposed on the upper surface 19a of a second housing 19, where both a luminous-diode substrate 16, equipped with a plurality of luminous diodes, and a reflector 17 reflecting an outgoing light from the luminous diode are housed inside a housing recess 18. An optical diffusion lens 13 is disposed for diffusing the light in the optical outgoing direction f of the illuminating module 8. The circuit substrate 20 for driving the luminous diode is also disposed, in a state which is separated apart in the housing recess 10 of the first housing 11. COPYRIGHT: (C)2010,JPO&INPIT