| 摘要 |
The present invention discloses a bicycle seat post combining with a caution device. Mainly an end of the bicycle seat post receiving a saddle has a bent section. The bent section is formed to be as a cantilever, a tail end of the cantilever is set a lid in combination with a caution light or a reflector, and therefore the caution light or the reflector is able to be installed into a containing room provided by the lid without any connecting component.
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