There are two types of lamps for outdoor street lights: High-pressure sodium (HPS) and LED. However, both light up the street well, but they have different characteristics. Here we will compare HPS versus LED lighting, and how they can improve the lighting quality of your street. If you have any questions, please ask us. We are here to help you decide which is best for you! And, of course, we’ll answer any questions you may have along the way!
LED street light bulb
LED street lights are an efficient way to produce the same amount of light for a lower energy consumption. Moreover, they produce the same quality of light and are considered continuous lighting. Their brightness ranges from 3900 to 38760 lumens. However, these lights are not suitable for every type of outdoor street light application. Therefore, it is important to consider its characteristics before purchasing a particular type of LED bulb. This article explores the advantages and disadvantages of LED street lights.
The main advantage of LED street lights is their energy efficiency. They are much more efficient than other street lighting technologies, including high pressure sodium. Researchers are continuing to improve LED efficiency. For instance, Lighting Science Group Corporation has developed a model of LED street lights with 60 percent more efficiency than its predecessor and a lifespan of 12 years. LED street lights are a smart investment in the city’s energy system. If you’re planning to install street lighting for public areas, then it’s best to switch to LED street bulbs.
High-energy blue wavelength light from traditional street lamps can damage human eyesight and disturb people’s circadian rhythms. However, LED streetlights use less energy and last longer than standard street lamps, reducing maintenance costs and greenhouse gas emissions. They also provide brighter light than traditional street lamps, making areas safer. The brightness of LED streetlights also reduces the chances of crime. In addition, LED streetlights produce fewer heat than their counterparts, which is important for the environment.
High-pressure sodium lamp
While high-pressure sodium lighting is less expensive to install than low-pressure sodium street lights, they may not last as long. Both types require ignition by a third electrode or a voltage pulse. High-pressure sodium lights need additional voltage to ignite, and the amount is balanced by a ballast. The luminous flux produced by these lights is the same as low-pressure sodium lights. This type of light is generally more durable than lower-quality models.
While high-pressure sodium is often considered environmentally friendly, some people worry about light pollution from its bright white light. However, studies have shown that it reduces noise pollution by nearly 75%. The US Department of Energy has projected that high-pressure sodium will capture 84% of the lighting market by 2030. High-pressure sodium lamps produce intense light by passing electricity between electrodes in an arc inside the bulb. While high-pressure sodium lamps produce white light, they are not as efficient as their counterparts.
In addition to being efficient, high-pressure sodium lights are also highly recyclable. They contain mercury, which poses a waste disposal issue when the lamps reach the end of their lifecycle. Broken lamps release a small amount of toxic mercury as gas, while the rest of the mercury is trapped inside the glass of the lamp. This makes high-pressure sodium lights a popular choice for outdoor street lights. If you have the resources, consider installing HPS lights in your city.
High-intensity discharge lamp
A HID (High-Intensity Discharge) lamp is a type of lighting fixture that produces light from an intense electrical current. These lamps can produce a high lumen output up to two hundred lumens per watt. They are also very durable, lasting for 24000 hours or more. HPS lamps are smaller in size than other types of lighting, but are still more energy efficient.
These lamps are widely used in outdoor street lights. The disadvantages of metal halide lamps include light pollution and a shorter life span. The lamps are oriented differently than the ones used in incandescent bulbs. This results in a loss of 10 to 20 percent of the light intensity over their lifetimes. Unlike the standard HPS lamp, a deluxe or special white HPS lamp will have a higher CRI and last longer.
Gas-discharge lamps create light by igniting a gas in the inner tube. They also support dimming functions. HID lamps also require ballasts to function. They have a restrike time that makes them slow to generate light at first. An interruption of current or voltage drop too low to sustain an arc will extinguish the lamp. It may also produce excessive heat in an unprotected area.