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Interior lighting of public transport vehicles

In the passenger area of all kinds of public transportation equipment, the lighting should be sufficient for people to see, but without excessive uncomfortable glare. Sometimes passengers are required to sit in a limited area for several hours, and every effort should be made to make passengers feel comfortable and refreshed. Comfort considerations are not limited to the design of seats, lighting is also an important aspect of the overall design.

In order to facilitate passengers to read and write, there should be enough lighting in the carriage, and the lights should be dimmed at night to help passengers fall asleep. If there are passengers who still need to read at night, small spotlights can be added to avoid disturbing nearby passengers.

In the past, the interior of the carriage was often completely designed before considering how to set the lighting. This mistake no longer exists in the standard passenger cars of British railways.

As for local trains, buses and subways, due to their short journeys, a single lighting device is generally used. Reading or activities on the vehicle only require an illumination of about 150 lux, and fluorescent lamps with transistor inverters are generally used.

Airplanes and long-distance trains can achieve good results by using fluorescent lamps and incandescent lamps together. However, due to space limitations on aircraft, installation is difficult. In addition, there are weight restrictions, such as the weight of the fluorescent lamp starter. Fortunately, the 400 Hz power supply used on the aircraft can make the commonly used control device smaller, and even the transistor inverter can be omitted. In order to save space and reduce weight, passengers can use a special wedge-shaped plug-type Reflector lamp for personal reading lighting. This lamp is now used on VC10 aircraft.

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