To improve visibility of a remaining battery charge meter by disposing the remaining battery charge meter for indicating remaining charge of a battery unit in the middle position on a frame nearer to a head pipe than to a battery accommodation recess.
A head pipe 6 connected to the front wheel 20 of a bicycle 2 is connected through a main pipe 8 to a seat pipe 12 connected to a saddle 30. A frame 4 is constituted with the main pipe 8 connected to the rear wheel 28 of the bicycle 2 through a chain stay 14, and a seat stay 14 also connected to the rear wheel 28. A batter accommodation recess 60 for receiving a battery unit 52 is formed in the middle of a frame 4 at the main pipe 8 portion. A battery remaining capacity meter 64 for indicating remaining capacity of a battery unit 52 is disposed in the middle position on the frame 4 nearer to a head pipe 6 than to the battery accommodation recess 60. Thus, visibility of the battery remaining capacity meter 64 is improved.
AZUMA KENICHI
AKASHIBA MASAHIKO
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