Illumination device
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United States of America Patent
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Oct 5, 2010
Grant Date -
May 21, 2009
app pub date -
Aug 24, 2006
filing date -
Aug 26, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lighting device is provided that surface-emits the light evenly with less number of luminous bodies by comprising a transparent body 2 for light diffusion in a shape of a body of rotation having a center bore 11 and provided with a luminous surface 2c and a light introducing surface 2b, and multiple luminous bodies 3 that introduce the light into the light introducing surface 2c of the transparent body 2 and make the luminous surface 2c of the transparent body 2 surface-emit the light, wherein the light introducing surface 2b is arranged on an inner peripheral section forming the center bore 11 of the transparent body 2, a reflecting layer 41 is arranged to reflect the light on a surface other than the light introducing surface 2b and the luminous surface 2c of the transparent body 2, and the light from the luminous bodies 3 is emitted toward an outer surrounding surface 2e of the transparent body 2.
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