| 摘要 |
PROBLEM TO BE SOLVED: To provide an independent power source unit rarely causing a problem on batteries.SOLUTION: Plural batteries 40 are arranged being interposed by a spacer 42 between the neighboring batteries 40. The spacer 42 is constituted of a material (rubber tube) which has an electrical insulation property and an elasticity. Since the independent power source unit thus constituted, compared to a case when the respective batteries 40 are arranged being in directly contact with each other, the heat radiation performance is ensured while preventing the batteries 40 from colliding against each other due to vibrations of earthquake etc. With this, the batteries 40 are prevented from getting reduced in service life or damaged due to collision among the batteries 40 while ensuring the heat radiation performance.SELECTED DRAWING: Figure 7 |
