What Are the Functions of a Led Driving Light?
Unlike their filament-style counterparts, LEDs work on low DC power. Therefore, they require a driver that converts AC into DC for them.
The LED driver also protects the bulbs from high current that could degrade their brightness and life span. It also mitigates flicker, which can be caused by excessive ripple in the current.
Brightness
In the lighting world brightness is measured in lumens. This is the amount of light that a specific LED or driver can output at one time. It can be tricky to determine how bright a particular Led Driving Light light is because of this. There are some online tools to help you figure this out but it’s also good to keep in mind that LED drivers vary on their current ratings.
HID lights can produce a lot of lumens, but LEDs can be much more efficient and can provide the same level of luminosity with less heat. This means that you can use them for a longer period of time before the bulbs burn out.
Another advantage of LEDs is that they are more durable than HIDs or halogen bulbs. They can withstand vibration from off-road driving or even if your 4×4 is taking on some gnarly terrain. HIDs and halogen bulbs are more susceptible to damage from this type of driving, especially when the bulbs start to blow.
Many of the top brands will have their LEDs tested for lux. This is a more accurate measure of the brightness of a light than just raw lumens. However, it is more expensive to test for this and only the best light manufacturers will do so. Most manufacturers will report the raw lumens for their LEDs but they won’t always give you the true number of effective lumens.
Lifespan
LED lights last much longer than their fluorescent or incandescent counterparts. However, like all other light sources, they see their luminous output decrease over time, as well. This is called lumen depreciation, and it happens the same way in LEDs as it does with incandescent bulbs, though most people don’t notice because they don’t “burn out.” LED manufacturers typically quote a lifetime for their products in hours (or some similar unit) that indicates how long the product can be expected to remain useful. This figure is usually accompanied by an L70, L80 or L90 rating that signifies how many percent of the original luminosity the product will still be emitting when it reaches those specified hours.
LED light fixtures are a complex systems, and there are multiple factors that can impact a fixture’s lifespan, including heat, power, and switching cycles. However, the most important factor for a LED fixture’s longevity is its LED driver. This is because the driver, as the most complex part of a LED fixture, is the most likely to fail.
Because of this, it’s important to keep in mind that the 50,000-hour lifetime quoted by most manufacturers for their LED fixtures is only a projection of the expected lumen depreciation of the LED chips themselves. It does not take into account other possible modes of failure in the rest of the fixture, such as the plastic or metal components that make up the assembly.
Dimming
Unlike filament-style bulbs, LEDs are semiconductors that emit light when current is passed through them. They have high intensity when they are on and low intensity when Led Driving Light they are off. LED drivers control the electric current that powers LEDs through two techniques or configurations: pulse width modulation (PWM) and amplitude modulation.
Both PWM and AM have advantages over the simpler, higher-frequency switching used in linear drivers. However, these circuits still generate substantial amounts of electromagnetic interference and require a substantial amount of filtering and screening. This can increase the cost and complexity of the driver, which in turn affects the quality of the LED light output.
In addition to the variations in brightness, dimming an LED lamp can have other impacts on performance, including flicker and power quality. In some cases, it may even result in dead travel and other anomalies in the light output. For this reason, the results shown here are normalized to reflect the light output of the LED product at a given dimmer output level.
Safety
Ultimately, the most important function of a Led Driving Light is that it helps to keep drivers safe and comfortable while on the road at night. By providing more illumination than the naked eye, these lights reduce glare from other vehicles and illuminate a greater area around your truck so that you can see hazards before they become serious problems.
When choosing an LED driver, you should look for one that has good dielectric isolation between the input and output circuits. This is especially important for high-power LED drivers as it prevents electric shock. In addition, a constant current driver is preferred as it avoids going beyond the maximum drive current of an LED, which can cause the LED to burn out or go into thermal runaway.
If you’re looking for a high-quality LED driving light, you should choose a color temperature that’s close to the natural daylight (5,000-6,500K). This will provide better contrast and illumination as well as excellent color rendering. Additionally, a brighter color temperature will help reduce eye fatigue.
Depending on the application environment, it’s also important to consider if your driving lights meet the requirements of any relevant laws or regulations in your area. For example, some states may have specific requirements for the candlepower, mount type, and other features of aftermarket lighting products to ensure safety on the roads.
