| 摘要 |
An illuminating roller for in-line skates includes an outer circular body having an axial opening and an inner side provided with a plurality of pins, an inner circular body fitted inside the outer circular body and having an axial hole aligned with the axial opening, two battery recesses, and a vibration switch hole, a circuit board fitted in a cavity of the second half, the circuit board being provided with an IC, two battery mountings made of metal and fitted in the two battery recesses, batteries fitted on the battery mountings for supplying power to the IC, a battery cover made of metal and having holes engaged with the pins of the outer circular body, a vibration switch fitted in the vibration switch hole and electrically connected with the IC, and a plurality of light-emitting means fitted in the apertures and electrically connected with the IC and the batteries, whereby the circuit board is prevented from being broken even subjected to vigorous vibration and two bright tracks will be produced when the roller is rotated.
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