| 摘要 |
PROBLEM TO BE SOLVED: To facilitate brightness adjustment of LED elements built in each LED unit while being attached to a landing or a car of an elevator. SOLUTION: Each LED unit 21 is provided for each floor. The LED unit 21 comprises: a main body support case 22 supporting a variable resistance 24 for adjusting a current applied to the LED elements 9 so that an adjustment knob 25 of the variable resistance is exposed above; and a rotary cover 23 in which the LED elements are housed, to which the adjustment knob 25 of the variable resistance is connected, and which can vary a resistance value of the variable resistance 24 when rotated. COPYRIGHT: (C)2009,JPO&INPIT
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