Just put a special cup on the water-filled travel mug, and an ordinary cup will shine at night, becoming a veritable luminous cup. The mystery of the luminous cup is on the lid of the cup. It absorbs energy through the solar panel on the top of the lid and supports the LED tube on the lid. At this point, the water in the bottle becomes a lens, which magnifies the illumination range. In addition, the cup cover is also equipped with a daylight sensor. When the sun comes out, the LED tube will stop working and avoid wasting power.
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Luminous Cup Design Source: Patent House
Luminous Cup Design Source: Patent House
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