Company Filing History:
Years Active: 2000
Title: Hironobu Sou: Innovator in Lighting Technology
Introduction
Hironobu Sou is a notable inventor based in Tokorozawa, Japan. He has made significant contributions to the field of lighting technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and safety of discharge lamps, particularly fluorescent lighting systems.
Latest Patents
One of Hironobu Sou's latest patents is an "Incrementally Preheating and Lighting System for a Discharge Lamp." This innovative lighting system incorporates an inverter circuit connected to a resonant circuit, which includes an inductor and a capacitor in series. The discharge lamp is connected in parallel with the capacitor, allowing for an inversely frequency dependent voltage to be applied between the lamp electrodes. This design ensures that during the preheat period, the voltage is lower in the first half than in the second, preventing a sudden surge of preheating current through the lamp electrodes.
Another significant patent is the "Discharge Lamp Lighting System with Overcurrent Protection." This system also utilizes an inverter circuit and a resonant circuit, with the lamp connected in parallel with the capacitor. The system is designed to monitor the phase of the load current to prevent potential damage to the inverter switches due to overcurrent. By adjusting the inverter output frequency based on the load current's phase, the system enhances the reliability and safety of the lighting solution.
Career Highlights
Hironobu Sou is currently employed at Sanken Electric Co., Ltd., where he continues to develop innovative lighting technologies. His expertise in electrical engineering and commitment to improving lighting systems have made him a valuable asset to the company.
Collaborations
Hironobu has collaborated with several talented individuals in his field, including Masaki Kanazawa and Hideki Nakamichi. Their combined efforts contribute to the advancement of lighting technology and the development of new solutions.
Conclusion
Hironobu Sou's contributions to the field of lighting technology through his patents and work at Sanken Electric Co., Ltd. highlight his innovative spirit and dedication to improving energy efficiency and safety in lighting systems. His inventions are paving the way for advancements in the industry.