The mission of urban lighting and landscape lighting:

Focus on green lighting, build an international brand, create a win-win situation for all parties, and share harmonious development. The lighting of landmark buildings, tourist attractions, streets, parking lots, gardens, and other places.

Three functions:

It can realize single lamp/group control, dimming by time period, real-time monitoring of the working status of each lamp on time switch, report output of alarm energy consumption and lamp status.

Different lighting fixtures use a variety of light bulbs. While some are general and may be used in a larger variety of applications, others are only employed for certain outdoor lighting applications.

Continue reading as we describe each kind of street light bulb in order of when they were invented.

1. Luminaire incandescent

Newer, more energy-efficient lighting options are gradually being phased out and used to replace incandescent light bulbs in street lights. The illustrious Thomas Edison created this kind of lighting in 1879, and arc lights were replaced by it.

While it is not recommended to utilize them, some cities continue to do so because they have a sentimental appeal for a bygone era when people were through the so-called “Period of Change.”

a row of classic incandescent street lights adorn the Colorado Bridge.

As you can see, they are nonetheless extremely charming and ornamental despite the fact that they are not particularly useful as street lighting. Let’s look at the reasons behind it a little further.

Tungsten-halogen filament, which is often used in theaters and stadiums, is utilized in incandescent street light bulbs. They outperform other kinds of bulbs in terms of efficiency, brightness, and color rendition but have a shorter lifetime.

Pros:

• affordable manufacturing
  the most affordable lamp ($1–$2)
  can operate with both DC and AC power and is highly adaptable to wide voltage and current ranges.
• The color rendition is excellent (a 2700K color temperature yields a CRI of 100). CRI is 95 as the temperature increases, which is still a high score.)

Cons:

• 10 lumens per watt is the sole efficiency rating (Most energy consumption is wasted in heat generation).
• 1,200 hours is a rather short lifetime, and maintenance costs are substantial.

Application:

Headlights, stadium lights, sports fields, and floodlights.

2. Fluorescent Lamp

Street illumination using an old tube fluorescent light

Fluorescent light bulbs for street lighting first gained popularity in the 1940s. An vintage fluorescent light bulb may be identified by its tubular shape.

In both ends of this kind of street light bulb is a metal electrode. It has mercury and argon gas within the tube, which assist light the lamp. Fluorescent street light bulbs essentially provide intense UV photons but little visible light.

While they generally outperform incandescent bulbs in terms of efficiency, they produce a lot of UV radiation. They are thus not particularly inexpensive or environmentally friendly.

Their life expectancy is between 7,500 and 20,000 hours.

Pros:

• More effective than outdoor incandescent lighting.
• Less heat is produced than by incandescent lighting.

Cons:

• A dimmer switch cannot be used with it.
• longer for the heat to build up for the light to become fully brilliant.
• risky due to the presence of mercury
• Cold-weather and windy environment sensitivity

Application:

Parking lot and street lights for the periphery are still in use.

3. A street light with bluish green illumination made by mercury vapor

To switch over to LED street lights in Jamaica, the government contributed US$25 million.

Mercury vapor light bulbs were created for street lights over a decade after fluorescent street lights were first introduced. It represented a substantial advancement over both the traditional incandescent bulb and the fluorescent lamp.

There are still a few mercury vapor street lights still today, but sodium lamps, which are more energy-efficient, have mostly taken their place.

People seem to detest an earlier model of the mercury vapor lamp since it is immediately identifiable by its bluish-green glow.

As phosphor was added to more recent models to enhance their designs and provide more white light, they were referred to as “color corrected” lamps.

Pros:

more effective than an incandescent or fluorescent light.

Cons:

• UV light since it generates hazardous pollutants.
• More fast than other kinds of bulbs, it dims.
• At the conclusion of its life cycle, it cycles.

4. A streetlight with a high-pressure sodium (HPS) bulb

Right HPS street light Left-facing white LED street light. The Madonna of the Mountains Square. Background streets still retain the outdated sodium yellow lighting.
In Piazza Della Madonna dei Monti, a white LED street light is seen on the left. The original sodium yellow lights are still present on the streets in the backdrop. Gianni Cipriano for The New York Times is to be credited.

In use today, High Pressure Sodium (HPS) lamps are among the most used lightbulbs for street lighting. They employ a combination of several gases to generate white light, and they are greatly favored since they need minimal upkeep.

In addition to this, they are more effective than prior iterations of light bulbs. Additionally, HPS generates an orange-yellow light.

Cons:

• It can take some time for the light to turn on.
• towards the conclusion of its life, produces a reddish hue
• At the conclusion of its life, it burns.
• For voltage adjustment and current control, it requires a transformer/ballast.

5. A street light on a foggy night

Similar to HPS lamps, low pressure sodium (LPS) lamps only produce warm or yellow light; they do not provide white light.

Compared to their forerunners, LPS lights are far more efficient, but they also take longer to turn on. The light is simply yellow-orange in hue.

Pros:

• Is more durable than HPS.
• Fewer lights than the HPS.

Cons:

• Since it only produces a single wave of yellow light, it has a CRI of 0, making it unable to discern between other hues.

Applications:

• Used in low-mount applications, such as tunnel lighting or illumination beneath bridges.

6. Street Light Bulb Made with Metal Halide

halogen metal lamp for nighttime gaming

Source of the image: Wikipedia-Metal Halide

The benefit of a metal halide light bulb is that it produces genuine white light, making it ideal for larger spaces like a sports field. For many street lighting systems, metal halide has shown to be more popular and preferable than mercury lamps.

They come in a variety of wattages and have also been used in several retrofit applications (50, 70, 100, 175, 250, 400, and 1000 watts). On average, metal halide may last 10,000–12,000 hours.

Pros:

• Possess high color fidelity.
• Have a higher CRI of around 85.

Cons:

• Excessive brightness, which makes light pollution worse.
• Ineffective compared to sodium lighting.
• They fail when they blow up or break.

Application:

• Used in high-end city and street lighting, warehouses, schools, hospitals, and stadiums as well as streetlights, parking lot lights, and stadium lights.

7. A ceramic discharge metal halide lamp (CDMH lamp)

The metal halide lamp has been improved with this kind of street light bulb.

It was created to take the place of HPS and mercury vapor lamps since it generates light with a better CRI (78–96).

Additionally, the color is retained better. In terms of efficiency (80 to 117 LM/Watts), CDM lamps outperform tungsten filament incandescent bulbs by a considerable margin.
8. Incandescent Lamp
from Indiamart

An induction lamp’s benefits include a long lifetime and efficiency in energy use. The Nikola Tesla-designed street light bulb claims to have a greater color rendering index and color temperature than Thomas Edison’s incandescent light. However, it has a drawback in that it cannot function effectively in hot conditions (35 degrees Celsius and above).

Pros:

• A 10,000-hour longer lifetime than incandescent bulbs
• superior than incandescent in efficiency.

Cons:

• has a bigger size than other lamp kinds, which prevents it from controlling light effectively.
• not suitable for situations requiring low mounting.

9. A street light bulb made of compact fluorescent lamps (CFLs).

Even though solar LED street lights are becoming more prevalent, CFL street lights are still widely used today. Although CFL bulbs seem like incandescent bulbs on the outside, they really function like fluorescent lights on the inside.

As a result, they are smaller than a conventional fluorescent bulb. The tubular loops on CFL lights make them simple to identify.

Many commercial building lights and street lighting around buildings utilize CFLs. They use less electricity while producing the same amount of light as a fluorescent bulb. CFLs last longer than incandescent bulbs in comparison (10,000 hours).

Pros:

• more effective and last longer than fluorescent bulbs.
• Compared to a fluorescent bulb, it has a more regulated beam spread.
• more streamlined

Cons:

• At the halfway point of its lifespan, illumination intensity might decrease.
• A ballast is necessary for CFL.

10. Street lights using Light Emitting Diodes (LEDs)

The most energy-efficient alternative for outdoor illumination is an LED street light bulb. It not only has a 50,000-hour lifetime but also does not release harmful compounds like mercury lamps do.

In comparison to CFL lights, LEDs are now favored for solar street lights and integrated solar street lights. Its illumination efficiency is great, at roughly 80 LM/watt, compared to the 58 LM/watt of conventional street lights.
Blue/white light is produced by LED streetlights.

Blue/white light is produced by an LED bulb. When compared to other kinds of bulbs, using LED has a number of advantages. It is simple to switch on since no warm-up period is required. Additionally, it doesn’t emit UV radiation.

Additionally, LED lights may be utilized to guide light. Unlike CFL lights, they can also be regulated by dimming. Smart solar street lights that automatically dim and brighten based on predetermined lighting settings for the street light also employ LED illumination.

Additionally, LED lights are more cost-effective in the long term and need less maintenance.

Pros

• Up to 50,000 to 100,000 hours of longevity.
• efficient energy use and reduced heat emissions.
• Indicative lighting (over 180 degrees, unlike other lights with 360 degrees light direction).
• really good lighting.
• low expenses for upkeep.

Cons

• expensive initial outlay

11. Phosphor-Converted Amber (PCA) LED Street Light Bulb

PCA LED lights, or phosphor-converted amber lights, were merely introduced three years ago. They have just come into the market. A very effective lighting solution with superb color rendition is promised by PCA LED. The only drawback is the price, which is high right now.

PCA LED, in contrast to conventional LED, emits a monochromatic amber light with a yellowish hue. It has a greater lighting efficiency and is highly aesthetically beautiful.

Pros:

• Because of their amber illumination hue, they are wildlife-friendly. Traditional LEDs are also energy-efficient.

Cons:

• Currently pricey

12. Narrow-Band Amber (NBA) LED Street Light Lamp

An innovative new LED product is the Narrow-Band Amber (NBA) LED street light bulb. Instead of the standard LED color, it emits yellow or a warm hue (blueish-white).

NBA LED promises to provide high-quality color, preventing lighted objects from seeming gray (like LPS lamps). Although currently expensive, they are incredibly energy-efficient.

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