Company Filing History:
6 out of 19 
2 out of 644 
1 out of 2 
Years Active: 1980-2000
Title: Nanjou Aoike: Innovator in Discharge Lamp Lighting Systems
Introduction
Nanjou Aoike is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of lighting technology, particularly in the development of discharge lamp lighting systems. With a total of 11 patents to his name, Aoike's work has had a lasting impact on the industry.
Latest Patents
One of Aoike's latest patents is a discharge lamp lighting system with overcurrent protection. This innovative lighting system for fluorescent lamps includes an inverter circuit connected to a load circuit, which features a resonant circuit made up of an inductor and a capacitor in series. A lamp is connected in parallel with the capacitor. The system applies an inversely frequency dependent voltage between the lamp electrodes based on a predefined resonance characteristic. This resonance frequency is set to be less than the discharge start frequency required for the lamp to glow. To light the lamp, the frequency of the inverter output voltage is adjusted from a higher frequency to a lower frequency, which is still below the resonance frequency. In the event that the lamp goes off unexpectedly, the current in the load circuit may advance out of phase with the inverter output voltage, risking damage to the inverter switches due to overcurrent. Aoike's design addresses this risk by continuously monitoring the phase of the load current. If the load current is found to be in phase advance, the inverter output frequency is increased above the resonance frequency, effectively delaying the phase of the load current and preventing potential damage.
Career Highlights
Throughout his career, Nanjou Aoike has worked with notable companies such as Toshiba Electric Equipment Corporation and Sanken Electric Co., Ltd. His experience in these organizations has contributed to his expertise in lighting technology and innovation.
Collaborations
Aoike has collaborated with esteemed colleagues, including Hisao Kobayashi and Kenichi Inui. Their combined efforts have further advanced the field of lighting systems.
Conclusion
Nanjou Aoike's contributions to discharge lamp lighting systems demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving lighting technology and ensuring safety in electrical systems. Aoike's work continues to influence the industry and inspire future innovations.