Spi Tecno S.r.l.

Berardino De Angelis

Dario Pennisi

A safety device for use in a street lamp, includes a first connection to a power grid (), second connections to at least two external units (), a first unit () of at least two units being adapted to draw current and a second unit () of at least two units being adapted to generate a potential difference. The safety device further includes a switch () adapted to switch between a first position, in which the first unit () is connected to the power line () to draw current from the power line, and a second position, in which the second unit () is connected to the power line to apply the potential difference to wires of the power line. The safety device further includes a communication system adapted to detect the presence of a safety signal on the power line and to switch the switch () to the first position in the event that the safety signal is missing or faulty.

Safety device for a street lamp system

A public lighting system includes at least one street lamp () of the type including a lighting device (), a device for converting renewable energy into electric energy (), and a post switch () for alternately connecting either the lighting device () or the generator () to a power line (). The lighting system further includes a line switch () that switches between a first position, in which the power line () is connected to a power grid (), and a second position, in which the power line () is connected to an inverter () interposed between the line switch () and the power grid ().

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Gignano, Italy

Berardino De Angelis