| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ceiling-embedded fluorescent lamp lighting fixture of an amalgam type wherein a decrease in illuminance caused by a fall in temperature at an amalgam is prevented, even if low-temperature air flows into a room from under the roof. <P>SOLUTION: An opening into which air flows is not provided in the vicinity of the amalgam 5 of a fluorescent lamp 1, and a radiating hole 23 into which air flows is arranged at a portion apart from the amalgam 5 excluding an upward portion of a vertical direction of a fixture body. With such constitution, even in an environment where the low-temperature air flows into the room from the back side of the ceiling, and convection C is generated inside the fixture, the low-temperature air passes through a position apart from the amalgam 5 by which rapid cooling of the amalgam 5 is prevented. In turn, generation of a remarkable decline is prevented in the illuminance of the fluorescent lamp 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
