| 摘要 |
PROBLEM TO BE SOLVED: To use a power source device 1 for supplying electric power of, for example, a vehicular loudspeaker AS with an amplifier by providing the power source device 1 for converting vibrational energy of a vibration source, for example, an automobile into electric energy. SOLUTION: This power source device is provided with a cylinder 2 for housing fluid 13, a piston 6 for fitting and inserting a piston head 7 for penetratingly arranging a fluid flow hole 19 in the cylinder 2, a rotary body PP for rotating by a flow when the fluid 13 flows in the fluid flow hole 9 in the cylinder 2, and a generator GEN for converting its rotation into voltage. Either one of the cylinder 2 and an external part of the cylinder 2 of a piston rod 7 connected to the piston head 7 of the piston 6 is fixed to the vibration source.
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