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Technologies registered in the New Technology Information System (NETIS) have adopted both the direct current power supply method (CG-170008) and (TH-15008).

Hoshi and Electric Co., Ltd. has been supplying lighting fixtures since 1957, when it provided lighting for the Kanmon Tunnel, the world's first underwater tunnel at that time. In 2010, it delivered the first LED tunnel lighting fixtures in Japan for a national highway directly managed by the Ministry of Land, Infrastructure, Transport and Tourism to the Enoura Tunnel. 1. The LED tunnel lighting fixtures with a direct current power supply system consist only of LEDs (light-emitting parts) without an internal power supply unit, resulting in an ultra-compact and lightweight housing, which reduces both fixture and installation costs compared to conventional products. 2. The dimming control of the tunnel lighting fixtures is possible through direct current control from the power supply unit in the electrical room, eliminating the need for dedicated dimming cables. 3. The power connection for the tunnel lighting fixtures uses waterproof connectors, which streamlines wiring connection work and contributes to a reduction in construction time. (Series connection method using CVV cables) 4. By installing the direct current power supply unit in the electrical room, maintenance for inspection and replacement is improved. 5. The tunnel lighting fixtures are designed without corrosion-prone components such as hinges and locks, enhancing fall prevention and safety. 6. The direct current power supply unit allows for remote monitoring via the web from computers installed in offices, enabling remote maintenance and preventive maintenance, including fault monitoring, through network connectivity.

We have delivered sign lighting using tunnel lighting fixtures, the first of their kind in Japan, to the Shin-Meishin Expressway (from Takatsuki JCT/IC to Kobe JCT).

We are engaged in manufacturing that contributes to a society of information and safety by challenging new technologies. To eliminate rear-end collisions caused by tunnels, which are common on highways, we have delivered sign lighting. In the event of a fire occurring inside a tunnel, the lighting fixtures will flash red. In that case, by stopping without entering the tunnel, we can minimize secondary damage. To avoid collisions with broken-down vehicles or accidents caused by falling objects, the lights will flash yellow, so please reduce your speed and drive carefully at that time. Until now, we have alerted drivers with text information only, but from now on, you will be able to understand that we are providing visual alerts. By adopting LED lighting, dark tunnels will become brighter, and by providing hazard information, traffic congestion is also expected to be alleviated. As a result, you will be able to enjoy a comfortable journey on your travel plans at home or during bus trips, arriving on time. Additionally, you will be able to avoid rear-end collisions caused by traffic jams in tunnels, ensuring a safe and secure trip. This is the manufacturing of Seiwa Electric that delivers peace of mind and safety.

We have delivered pace maker lights using tunnel lighting fixtures, the first of their kind in Japan, to the Shin-Meishin Expressway (from Takatsuki JCT/IC to Kobe JCT).

We are engaged in manufacturing that contributes to a society of information and safety by challenging new technologies. To resolve traffic congestion often caused by tunnels on highways, we will implement pace maker lights as a solution. With the alleviation of traffic jams, you can enjoy a comfortable journey on time for your family travel plans or bus trips. It is also delightful that you can spend more leisurely time at your destination than before. Additionally, this will help avoid rear-end collisions caused by traffic jams in tunnels, ensuring a safe and secure journey. This is the manufacturing of Seiwa Electric that delivers peace of mind and safety.