LED Street Lights

LED street lights are generally composed of two main parts: a canopy and a frame. The canopy contains two cavities: the upper and lower cavity houses the LED assembly and the electrical components. These two parts form two enclosed compartments, with the bottom cavity having a clear tempered flat glass lens and the LED assembly mounted flat against the heat sink surface of the canopy. The entire assembly may be sealed with a gasket for improved ingress protection.

Cost

LEDs are now the most popular way to light up your streets. LEDs emit a whiter light and have better coverage than traditional street lights, such as high-pressure sodium. The cost of LED street lights varies depending on wattage, and the transition time between traditional street lighting and LEDs is about 70 days. Each light can cost approximately $45 per month. For a full installation, the cost per light will be approximately $1,000.

Using LED street lights has a number of benefits, including a longer life span and low cost. They can save up to 75% of energy compared to traditional high-pressure sodium lamps. LEDs require no buried cables and no rectifiers. They can be directly connected to a light pole and nestle into the lampshade. They also offer passive heat dissipation during summer. But what about the price?

Lifespan

The energy consumption and lifetime of LED street lights are impacted by traffic-aware lighting control. While traffic-aware lighting control can reduce energy costs, the lifespan of LED street lights is significantly reduced. To understand the cost-benefit of traffic-aware lighting, Tahkamo et al. conducted lifecycle cost simulations for LED streetlights. The study varied variables such as electricity prices, spot replacements, and evolution of LED luminaire price. They then modeled energy costs over a 30-year period.

Another consideration is the cost of installing and replacing LED street lights. Since LED technology is new, the cost of retrofitting is higher. Hence, lifecycle cost projections are based on standard testing procedures. In any case, PSE lights will need to be replaced soon. Nonetheless, LED street lights can save money in the long run. This is an important factor to consider when evaluating the cost of LED street lights.

Power factor

The power factor of LED bulbs is an important parameter to determine the energy efficiency of a light bulb. If the power factor is less than 1.0, the LED bulb will require high input currents to recharge its internal capacitors and supply the LEDs. The voltage and current of the light will fluctuate, causing the mains voltage to become distorted and creating extra wire losses. Consequently, LED bulbs should have a power factor greater than 0.7.

LED luminaires are increasingly being manufactured using passive power factor correction circuitry. This method imposes a penalty on efficiency, but is often cheaper and easier to install than traditional lighting systems. Active power factor correction circuitry is also an option. Although this method requires a higher initial investment, the efficiency of the finished product is usually higher than 90%. It is often accompanied by a step-down back end stage to produce a regulated current output. This back end stage may be a single switch Flyback converter or a two-switch Half-bridge resonant converter. Other LED street light designs take a modular approach, consisting of a series of smaller panels and a central power supply.

Lens shape

The lens shape of LED street lights can greatly affect the distribution and performance of light. Different shapes are used for diffusing the light from LEDs. This study assessed the effect of different lens shapes on different illumination patterns. The study was conducted using three sets of experiments. The lenses were characterized with Goniophotometers (GO-2000) and Integrating Spheres (PCE-200A). The results of the simulations were compared to the actual requirements of the ME4A road lighting scheme.

The most common pattern for LED street lights is Type III Medium. These street lights are used on wide city streets and general roads. Since these street lights are installed near the road, they need to effectively reflect light away from sidewalks and roadsides without causing loss to the illumination. The Type III lens is unique to the LED chip used to manufacture it. The following table provides the characteristics of each lens shape and their advantages. This article will help you select the right lens shape for your needs.

Ingress protection (IP) rating

The Ingress Protection (IP) rating of an LED street light reflects the degree to which the lighting product is protected from external liquids or solid objects. The IP rating is based on two numbers – the first of which represents the degree of resistance to solid objects, while the second implies the amount of moisture that the light fixture is protected from. As such, it is important to choose a product that meets the IP rating of your chosen location.

Ingress protection (IP) rating is an important factor to consider when shopping for a new lighting product. This rating is an important consideration for fixtures in coastal areas or in industrial settings, where dirt, dust, and other foreign materials may affect the equipment. It is also essential for indoor fixtures to be protected against water in humid conditions. Furthermore, the internal mechanisms of these fixtures need to be kept dry. High-IP-rated fixtures are also suitable for locations with high footfall, including wet, dirty warehouses, and sports arenas.

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