Introduction: Takenobu Iida, an esteemed inventor based in Urawa, Japan, has made significant contributions to the field of lighting technology with six patents to his name. His innovative designs in high-pressure discharge lamps exemplify his commitment to advancing efficiency and functionality in modern lighting systems.

Latest Patents: Among his latest inventions, Iida holds a patent for a high-pressure vapor discharge lamp with a built-in igniter. This innovative design features an igniter connected in parallel with the arc tube of a high-pressure sodium lamp, utilizing a series circuit of a thermally-activated bimetal switch and a nonlinear capacitor. The construction enhances performance by ensuring that a heating resistor can heat the nonlinear capacitor to its Curie point temperature, facilitating reliable igniter operation.

Another notable patent pertains to a high-pressure metal vapor discharge lamp that incorporates a series circuit of a thermal switch and a nonlinear ceramic capacitor. The design includes a pyroelectric current bypassing resistor to ensure longevity, effectively preventing early deterioration of the nonlinear ceramic capacitor. This innovative approach significantly extends the service life of the discharge lamp.

Career Highlights: Takenobu Iida is currently affiliated with Iwasaki Electric Co., Ltd., a leading company renowned for its expertise in lighting technology. His contributions have been pivotal in enhancing the performance and reliability of various lighting solutions.

Collaborations: Throughout his career, Iida has collaborated with esteemed colleagues such as Shunichi Sasaki and Minoru Yasukawa. Their collective efforts have fostered a dynamic environment for innovation, driving advancements in discharge lamp technology.

Conclusion: Takenobu Iida's inventive spirit and technical expertise have led to significant advancements in high-pressure discharge lamps. His patents not only reflect his ingenuity but also contribute to a more efficient and durable lighting future, underscoring his vital role in the field of electrical engineering.

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