| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED unit excellent in practicality and economical efficiency, to provide a manufacturing method of the LED unit, and to provide a luminaire for a ceiling using the LED unit. <P>SOLUTION: The LED unit 4 is provided with a plurality of LED elements 23 containing metal plates 22 with LED chips 21 supported. Those LED elements 23 are arranged in nearly-ring shapes or nearly-C shapes as a whole part in states separating adjoining metal plates 22 each other, and each LED element 23 is electrically connected in a given series order, however, a loop of the electric connection is broken at least one place. Then the broken-connection part is electrically connected to a pair of external terminals 25, 26, and also, each LED element 23 is firmly attached to a transparent member 27 with electric insulation making a ring or nearly-C shape, and a window hole 28 is formed at its center part. <P>COPYRIGHT: (C)2008,JPO&INPIT |
