| 摘要 |
PURPOSE: A portable terminal case having an LED lamp is provided to prevent poor quality thereof and to improve the luminous efficiency of LED. CONSTITUTION: A portable terminal case having an LED lamp comprises a magnetism induction antenna(20), an impedance matching unit(30), a double voltage direct current converter(40), and an LED lighting unit(50). The magnetism induction antenna receives electro-magnetic waves from an NFC antenna of a mobile terminal and converts the waves into an electric signal. The impedance matching unit improves the receiving efficiency of the magnetism induction antenna. The double voltage direct current converter converts the AC voltage of the magnetism induction antenna into double direct current voltage. The LED lighting unit is turned on and off by the power provided by the magnetism induction antenna. [Reference numerals] (10) Portable terminal NFC antenna; (20) Magnetism induction antenna; (30) Impedance matching unit; (40) Double voltage direct current converter; (50) LED lighting unit |
