We must examine how these light sources produce their light in order to comprehend why LED lights are heavier than conventional high pressure sodium (HPS) or metal halide fittings. One of the two common ways to produce light in traditional kinds of lighting—HID or incandescent—was employed. HID bulbs are unbeatable for large-scale sports applications even if they are not thought of as “efficient” in terms of energy usage. Sports fields continued to use HID lights despite the fact that many smaller work light applications had long since switched to LED since LED did not perform as well there. The LEDs had made enough progress by 2018 to be a viable contender, but they still needed a lot of surface area and heat sinking to handle the heat produced by 1500W of hard-working LEDs.
Incandescent
An electric light with a wire filament that has been heated until it glows is known as an incandescent light bulb, incandescent lamp, or incandescent light globe. To prevent oxidation, the filament is housed inside of a bulb. Terminals or wires buried in the glass provide current to the filament.
A filament, which is effectively a resistor, is used in incandescent lamps. Due to the increasing resistance created by the filament when the energy flows through it, the wire becomes extremely hot and glows. If this were exposed to the elements, the filament would quickly oxidize and burn out. However, since the bulb is a vacuum, the light is only produced by the filament glowing brightly.
HID
An electric arc between tungsten electrodes placed inside a translucent or transparent fused quartz or fused alumina arc tube creates light in high-intensity discharge lamps, a type of electrical gas-discharge lamp.
HID bulbs, however, are gas-filled. When the lamp is turned on, the bulb creates an internal arc that causes the gas to fluoresce, producing light. Both of these lighting types produce heat, albeit incandescent does so considerably more than HID. The front lens, or front, is where this heat is produced. You may feel the heat produced if you hold your hand in front of a halogen lamp.This necessitates the use of a heat-resistant material, frequently glass, for the protective screen on the front of these lights. This provides excellent transparency and can withstand heat. Therefore, enabling heat to escape from the front was crucial. The fundamental structure of the lamp was only a thin galvanized plate that could support the bracket and electronic ballast. Given that it had no use other than to shield the inside from dust and rain, it may be rather aerodynamic.
LED
A semiconductor light source called a light-emitting diode produces light when current passes through it. Recombining electrons and electron holes in the semiconductor results in the release of energy in the form of photons.
In contrast to these conventional illumination sources, LEDs operate extremely differently. The front of an LED emits light when it is turned on, but the PC board receives all the heat. LEDs that are overheated fail very quickly, so the heat must be reduced or eliminated. In order to remove the heat and dissipate it far from the temperature-sensitive LEDs, “heat sinks” are used as a result. The lamp grows larger and heavier as its power increases because more heat sinking is needed. Given the frequency of extremely hot evenings and the enormous heat produced by static LED bulbs, nothing should be left to chance.Even a slight breeze can significantly lessen the heat, although this cannot always be counted upon. Additionally, it’s possible that the lights were unintentionally left on during the day. The initial housing design of the lamps must take into account each of these elements.
Aluminum has been the material of choice up until now. It is affordable, considerably lighter than most other metals, and particularly good at transferring heat. The other important issue is that the most popular processes, extrusion and die-casting, are simple to mold, extrude, or shape to whatever is required for a particular lamp. Although graphene and other polymers have been considered as alternative material possibilities throughout the years, the heat sink-to-weight ratio doesn’t support switching away from aluminum in the near future for high power LEDs like those used in sporting applications. As a result, it appears that there is no immediate solution to the problem of what appears to be excessively hefty LED lighting. We will be limited in what we can accomplish with retrofitting metal halide or sodium vapour lighting dependent on the weight and sail area for at least the next five years. Don’t fully rule out the option, though. If you receive an engineers report, it’s likely that there is some tolerance there that might just be enough to permit the LED update your club has long desired.
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