| 摘要 |
PURPOSE:To transmit effectively heat quantity generated from a repeater circuit unit to a repeater case body, and to reduce the atmospheric temperature of laser in the circuit unit by a method wherein support of the repeater circuit unit is performed by a metal buffer body utilizing a metal spring. CONSTITUTION:The circuit unit 4 is covered with an insulator 3. The metal spring 8 is arranged in the interval between the outside circumference of the insulator 3 thereof and the inside circumference of the cylindrical repeater case body 1 interposing metal cylinders 9 between them. Metal springs 7 for buffing in the axial direction are arranged. By constituting in this way, heat generated from the repeater circuit unit 4 is transmitted from the metal cylinder 9 to the metal spring 8, and is discharged to the cylindrical repeater case body 1. As a result, the temperature in the repeater unit 4 can be held at the value being extremely near by the temperature of the sea bottom, and the long life of laser device can be attained. |
