Led Lightbars - Design And Features That Make Them Valuable

By Author: Sunil Punjabi
Total Articles: 2565
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LED lightbars, thanks to a sleek but versatile design and some excellent features have become the emergency vehicle lighting of choice. A deeper look at the details will show one and all, exactly why they are so suited for emergency lighting. To start with LEDs or light emitting diodes by nature suit emergencies more than incandescent lights do. This is because they have the capability to produce high intensity beams without huge currents or power supplies. This makes them safer than most other light sources. With a simple 12 – 24 VDC supply, it is possible to prepare an LED lighting kit, which is complete with controller box, in-built flash patterns and interconnecting cords. The compactness of this circuit, and the efficiency with which 1W LEDs can be stacked together in multiple rows makes the design of light bars so efficient and effective for emergencies.

Whether it is a highway patrol car or a construction crew vehicle sending a warning signal, the light beams have to be seen from a long distance. This becomes even more important at the site of wreckage where you would want vehicles to pull up or at least ...
... slow down. There are LED lightbars which comprise of a dozen LEDs in 2 rows, each surrounded by a chrome deflector. This helps in enhancing the aura of the light beam that is thrown out, thus increasing the coverage area. LED bars with LEDs on all 4 sides, ensure that the lighting is seen from all the directions. The plug and play harness that comes with the kit makes it very easy to operate the lights.

The extruded aluminum housing along with black polycarbonate base of LED lightbars offers two benefits. Firstly, the structure allows for easy heat dissipation, especially when there are dozens of LEDs. Light emitting diodes dissipate very less heat unlike their incandescent counterparts, thus preserving energy. However, whatever heat is radiated needs to escape to ensure that the whole bar stays cool, which is important when they are operated for long hours. Secondly, the encapsulation of the lights ensures that the circuit is moisture and vibration resistant. Programmable and multi-flashing lights provide you plenty of variety in terms of emergency lighting. The commonly available colors include blue, red, amber and white.

LED lightbars usually come with both steady mode and flashing mode lights with in-built flash patterns. Interconnect wires are part of the kit where you can put together several segments, whether on the roof or close to the edge of the back window. The wide angle spread of the light is ensured with deflectors and clear lenses. The optics also enhances off-angle visibility especially for patrol cars which lead the way for other vehicles to follow. Heavy duty light bars also have a memory to store previously used patterns. The light beams can be synchronized in their flashing as well as in their intensity. Similarly, the angle of the beam could be adjusted and so can the mix of colors that you want flashing on the car roof.

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