Kiyohumi Nakayama

Title: Kiyohumi Nakayama: Innovator in Vehicle Protection Circuits

Introduction

Kiyohumi Nakayama is a notable inventor based in Azumamura, Japan. He has made significant contributions to the field of vehicle electronics, particularly in the development of protection circuits for switching transistors. With a total of 2 patents, Nakayama's innovations focus on enhancing the safety and reliability of automotive lighting systems.

Latest Patents

One of Nakayama's latest patents is a protection circuit designed to prevent overheating of a switching transistor that delivers current from a power source to a daytime running light on a vehicle. This innovative circuit opens the conductive path from the power source when the temperature at the switching transistor exceeds a predetermined threshold. By doing so, it prevents excessive current from flowing through the transistor, thereby avoiding potential overheating and fire hazards. Unlike prior art protection circuits that only control the gate of a MOSFET or the base of a BJT switching transistor, Nakayama's design effectively addresses the risks associated with damage to the transistor.

Another significant patent by Nakayama involves a protection circuit that prevents excessive current flow through a field effect transistor due to a short load. This invention utilizes commonly available devices, such as resistors and transistors, to maintain low costs while ensuring effective protection. The circuit includes a latching mechanism that keeps the switching transistor turned off once the current level exceeds a predetermined limit, thus preventing the daytime running light from flashing on and off.

Career Highlights

Throughout his career, Kiyohumi Nakayama has worked with prominent companies in the automotive industry, including Honda and Mitsuba Corporation. His experience in these organizations has contributed to his expertise in developing innovative solutions for vehicle electronics.

Collaborations

Nakayama has collaborated with notable professionals in his field, including John W. Vilkinofsky and Shinichi Kubozuka. These collaborations have likely enriched his work and contributed to the advancement of automotive technology.

Conclusion

Kiyohumi Nakayama's contributions to vehicle protection circuits demonstrate his commitment to enhancing automotive safety and reliability. His innovative patents reflect a deep understanding of the challenges faced in vehicle electronics, making him a significant figure in the industry.