18w LED Street Light Bulb
An LED street light is an integrated light that uses LEDs as its light source. These are considered integrated lights because, in most cases, the luminaire and the fixture are not separate parts (except LEDGine-based luminaires). New in manufacturing, the LED light cluster is sealed on a panel and then assembled to the LED panel with a heat sink to become an integrated lighting fixture.
Different designs have been created that incorporate various types of LEDs into a light fixture. The current trend is to use high power 1 watt LEDs, but some companies use low power LEDs in their products, including several low power LEDs packed together to perform the same purpose as a single high power LED. The shape of the LED street light depends on several factors, including LED configuration, the heat sink used with the LEDs, and aesthetic design preference.
Heat sinks for LED street lights are similar in design to heat sinks used to cool other electronics such as computers. Heat sinks tend to have as many grooves as possible to facilitate the flow of hot air away from the LEDs. The area of heat exchange will directly affect the lifespan of the LED street light.
The lifespan of an LED street light is determined by its light output compared to its original design specification. Once its brightness decreases by 70 percent, an LED street light is considered to be at the end of its life.
Most LED street lights have a lens on the LED panel, which is designed to cast its light in a rectangular pattern, an advantage compared to traditional street lights, which typically have a reflector on the backside of a high-pressure sodium lamp. In this case, much of the luminance of the light is lost and produces light pollution in the air and surrounding environment. Such street lights can also cause glare for drivers and pedestrians.
Un inconvénient des panneaux de mise au point à LED est que la plupart de la lumière est dirigée vers la route et moins de lumière vers les sentiers et autres zones. Cela peut être résolu par l'utilisation d'une conception de lentille spécialisée et de broches de montage réglables.
Efficacité énergétique
Le principal attrait de l'éclairage public à LED est l'efficacité énergétique par rapport aux ampoules à incandescence de même luminance. La recherche continue d'améliorer l'efficacité des modèles plus récents. Une telle avancée peut être trouvée dans un produit d'éclairage public créé par Lighting Science Group Corporation. Un modèle de lampadaire à LED produit par ce groupe est jusqu'à 60% plus efficace que les modèles précédents, dure 12 ans et permet de récupérer les coûts grâce à des économies d'énergie en seulement trois ans.
Un lampadaire LED basé sur une LED de sortie de 901 milliwatts peut normalement produire la même quantité de luminance (ou plus) qu'un éclairage traditionnel, mais ne nécessite que la moitié de la consommation d'énergie.
Comme les luminaires à LED produisent normalement moins d'éclairage lumen / Watt, il est très important d'avoir un modèle d'éclairage bien réparti afin de faire le même travail que les luminaires conventionnels à lumen / Watt plus élevés. Ainsi, une bonne conception des lampadaires à LED consiste à pointer différentes LED dans un appareil vers différents points cibles.
Avantages de l'ampoule de réverbère LED 18w
1. Faible consommation d'énergie et durée de vie longue et prévisible.
2. La durée de vie des lampadaires à LED est généralement de 10 à 15 ans, soit trois fois la durée de vie des technologies actuelles adoptées. Les LED ont également un faible coût de maintenance.
3. Gradation
LEDs can be dimmed when less street lighting is needed, such as late nights and early mornings.
4. Small package size.
5. More accurate color rendering
The color rendering index is the ability of a light source to correctly reproduce the colors of the objects in comparison to an ideal light source.
6. Quick turn on and off
Unlike fluorescent bulbs, which take time to heat up once switched on, LEDs turn on instantly and do not have a problem restarting immediately after being turned off (hot ignition).
7. RoHS compliance
8. LEDs don't contain Hg/Pb and don't emit poisonous gases.
9. Less attractive to nocturnal insects
Insects are sensitive to the UV-blue and green region of the light spectrum. Nocturnal insects are attracted to the emission of UV-blue and green light from conventional light sources. White LEDs, however, emit light in a small peak in the blue range and smaller in the green range, so nocturnal insects are less attracted to such light sources.
10. Easy to design non-glare lighting equipment
Most LED street lights have a lens on the LED panel, which is designed to cast its light in a rectangular pattern, an advantage compared to traditional street lights, which typically have a reflector on the backside of a high-pressure sodium lamp. In this case, much of the luminance of the light is lost and produces light pollution in the air and surrounding environment. Such street lights can also cause glare for drivers and pedestrians.
11. Higher light output even at low temperatures.
