| 摘要 |
This invention of double-tube water pen includes an outer tube, an inner tube, an ink tube, a pen cover, and a pen top. Once the inner and outer tubes are connected, decorative liquid can be added. The closed end of the inner tube can have an extended tube. This extended tube can take in ink tube in its outer tube and make the length of ink tube to be longer. Moreover, a glowing gadget can be installed into the empty space inside of inner tube. One end of the glowing gadget is pushed closely to the end of the ink tube. When users use the pen and press the ink tube to the glowing gadget, the glowing part inside of the gadget will receive current and start to glow. This will add special effect to the pen.
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