| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a waterproof repeater in a simple structure for securing maintenance properties and at the same time performing miniaturization, and at the same time solving heat problems. SOLUTION: A repeater body that is accommodated in an envelope in a sealed structure comprising a box-type enclosure 11 and a box-type lid body 12 is built into a flat first chassis 31 that is adhered to and mounted to the bottom section of the lid body, a box-type second chassis 32 that is thermally connected to and is mounted to the edge section of the first chassis, and a plurality of sub chassis 33 that are accommodated in the second chassis aligned in a vertical direction. Especially a main circuit board 21 is packaged on the first chassis, and a plurality of sub circuit boards 22 for forming an interface to a main cable or each feeder cable and a control circuit board (sub circuit board) 23 are mounted to a sub chassis.</p> |
