| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED lighting fixture capable of performing both surface emission and attaining thinning and cost reduction.SOLUTION: A light guide member 2 has end parts set in opposition at emission positions of a light source part 1 having an LED as a light source and guides light from the light source part 1 incident from the end parts to emit to the outside from both of front and rear surfaces. A frame body 3 is formed in a rectangular shape by combining metal-made frame sides 3a and hung and retained from a ceiling 100 through hanging wires 6. The light source part 1 is fixed to the frame side 3a on a longer side of the frame body 3. Further, the frame body 3 retains end-part peripheries of the light guide member 2 so that light can be emitted from almost a whole of main surfaces (an upper face and a lower face) of the light guide member 2. On an upper face of the frame body 3, there is fitted a thermally conductive member 5 made of a heat pipe 5a, and heat generated by the light source part 1 is thermally conducted by the thermally conductive member 5 from a position where the light source part 1 is arranged in the frame body 3 to other positions, and temperature rise of the light source part 1 can be suppressed. |
