Retrofitting Decorative Pole Lighting with LED Lamps and Fixtures
Decorative pole lighting is available in an extra ordinary number of styles. Retrofitting acorn or teardrop lighting fixtures with LED lamps and fixtures needs to maintain both the design and other qualities of the lighting. This LED retrofitting guide provides guidance on how to update the quality of the lighting and increase energy efficiency for these types of decorative pole fixtures.
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Extraordinary Variety of Fixture Styles and Designs
Needs:
Retrofitting for lower costs, improved lighting performance,
and to maintain integrity of the design
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1697 – “House keepers within this city shall put out
lights in their windows fronting ye respective
street” Common Council
1762 – Levy a Tax for Street Lamps
1809 – Baltimore introduces gas lights
1877 – Arc Lighting Newark, NJ
1880s – 1910s – Commercial Area Arc Lighting NYC
1892 – Edison Illuminates 5th Ave NYC
1900s – Bishops Crook Symbol of NYC
1908 – First Mast Arm Introduced
1913 – Incandescent Mast Arm, Bishop Crook, Scroll
Basket
1934 – 76 Types of ‘Standard’ Post Lights Cataloged in
NYC
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Colonial Street Lamp 19th Cent. Gas Lamp
5th Ave Incandescent
Street Lamp
Bishop Crook
Street Lamp
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Street Lighting:
Parkways, Historic Districts, Retail Lighting,
Parking Lot Lighting, Roadways, Access Roads
Shielded Teardrop &
Arm Extension
Decorative Teardrop &
Scroll Design
Mast Arm Post Light Bishop Crook
Decorative Pole
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Pedestrian Lighting:
Parks, Recreation, Pathways, Campuses, Walkways, Transit
Platforms, etc.
‘Central Park’
Pole Light
Acorn
Pole Light
Cut-off Pole Light ‘Modern’
Pole Light
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Central Park NYC – DOE Report
◦ 1,600 Fixtures = $178,560 per year maintenance
◦ $111.60 / Fixture / Year
$65.60 for Ballasts and Pole Maintenance
$46.00 for Lamps
Sacramento Lighting – DOE Report
◦ Street Light Maintenance Budget $1.7M / Year
◦ 35,000 to 40,000 fixtures in the city
◦ Spot Replacements - $400 - $750 / Incident
◦ Average Cost/ Fixture / Year $45 - $65
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Maintain the integrity of the aesthetic
design elements
◦ No Effect on Design Elements
◦ Color of Lighting / Illumination Quality
Meet Lighting Standards
◦ Pattern of Light & Levels
Lower Costs
◦ Periodic Maintenance
◦ Operating Costs / Electricity
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Wasted Light ~ 20%+ LED Pole Lighting:
- Less Sky-glow – Dark Sky Compliance
- Directed Optics – No Upward Light Wasted or Refracted Losses
- Optics Design – Less Light Trespass, Control Over Shaping of Pattern
Optical Design and Control
Better Vertical Illumination =
Ability to See Pedestrians
Better Horizontal Illumination=
See Roadway or Sidewalk Features
Less Waste
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Wasted Light ~ 20%+ High Pressure Sodium (HPS) Street Light:
Power = 128 Watts
Lab Test Output = 6,432 Lumens
Lab Efficiency = 50.1 Lumens/ Watt
Delivered Lumens = 2,694 Lumens
Application Efficiency = 42%
Overall Efficiency = 21 Lumens/ Watt
LED Street Light:
Power = 63 Watts
Lab Test Output = 5,304 Lumens
Lab Efficiency = 84.6 Lumens/ Watt
Delivered Lumens = 3,006 Lumens
Application Efficiency = 57%
Overall Efficiency = 48 Lumens/ Watt
128% Improvement
HPS to LED
LEDs More Light on the Ground, Using Less Energy
Source DOE Sacramento
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10’20’
Path
5.75 FC – MH
3.66 FC – LED
Δ -36%
1.39 FC – MH
0.76 FC – LED
Δ -45%
1.03 FC – MH
2.64 FC – LED
Δ +156%
5.68 FC – MH
10.93 FC – LED
Δ +92%
1.17 FC – MH
2.89 FC – LED
Δ +147%
5.14 FC – MH
7.89 FC – LED
Δ +53%
0.63 FC – MH
1.95 FC – LED
Δ +209%
4.08 FC – MH
8.18 FC – LED
Δ +100%
2’
6’
4’
% Change in Avg. Foot Candle
Avg. Foot Candles at Heights of 2’,4’,6’
(FC=Foot Candles)
Source: DOE Central Park
Lower Light Levels– Less Light Trespass
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Lighting Design - Color Choice
◦ Warmer Temperatures to emulate incandescent look
& feel
◦ Cooler Temperatures for nigh vision acuity
Fixed Source Temperature v. Selected Color
◦ HPS / Metal Decorative Pole Lamps – Fixed Color
Temp.
HPS – 2,100K / Metal Halide – 4,200K
◦ LED Lamp Sources Available in Range of Color
Temps
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Color Temp (K) Source LED
Choices
2,700K – 3,300K Incandescent Lamp 2,700K
3,000K Warm White CFL
4,100K Moonlight
5,000K Daylight Horizon
5,500K Daylight Noon
6,500K Daylight Overcast 6,500K
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CRI – Ability to predict color appearance of an object
under the light
◦ Distinguish a standard set of colors
Ability to naturally see colors of objects on pathways,
roads, parking lots, etc.
Incandescent Lamp = 100
◦ Older Standard / Familiar Source
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Light Source CRI Typical
LED
High Pressure Sodium (HPS) 24
Warm White Fluorescent 51
Cool White Fluorescent 64
65 to 85+
Quartz Metal Halide 85
Halogen 95
Incandescent 100
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Screw-In Designs
◦ Orientation – Has to be designed for base up
or base down for post tops or teardrops
Heat dissipation requirements
◦ Places blub in same orientation as existing
lamp sources
◦ Integrated or Non-Integrated LED Drivers
◦ Light Patterns – IES Distributions
◦ Rebates – Sometimes not available unless the
lamp is physically attached to fixture
Bolt-In Designs
◦ Often able to be oriented for Pole Lamps or
Teardrop Pole Lighting Styles
◦ Uses thermal mass of fixture housing and pole
for heat removal
◦ Driver typically located on bracket in housing
◦ Greater control of light pattern
◦ Typically better able to cutoff lighting for dark
sky requirements
◦ Rebates available
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Fixtures Manufacturer Features
IntenCity Lighting - PTLK -- Post Top or Tear Drop Configurations
-- Rugged Monolith Design, External Driver, Bolt-in for Maximum Heat Dissipation
- - Higher Lumens for Street Lighting Application
Type III or V IES Distributions
CCT = 4,100K – 5,500K (2,700 Special Order)| CRI = 66 |Lumens = 3,000, 5,000, or 6,500
Eye Lighting - LEDioc -- Post Top or Tear Drop Configuration
- - Screw Base / External Driver
- - Closely Follows Lamp Geometry
- - Engineering Servicesto Adapt to Fixtures
Type III or V IES Distributions
CCT = 3,000k or 5,000K | CRI = 70 or 85 | Lumens = 3,100 or 4,400 Lumens
Sansi Post Top Light -- Post Top Orientation
- - Screw Base / Integrated Driver
-- Choice in Screw Base E26/ E27/E39
Type V IES Distribution
CCT = 4,500 / 5,000K | CRI = 70 | Lumens = 3,250 or 4,800
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Fixture Power
Fixture &
Operating
Costs/ 10K Hrs
Cost Year/
12 Hour-Day
Savings /
Year v. HPS
% Savings
v. HPS
IntenCity PTLK 40W $124.43 $54.50 -$104.20 66%
LEDioc Eye Lighting 41W $117.21 $51.34 -$106.36 68%
Sansi Post Top 45W $110.79 $48.52 -$110.18 69%
HPS Post Top Fixture 183W $362.33 $158.70 - -
$0.15 per KwH
Lamp Maint/ Yr. = $46.00
Ballast Maint/ Yr. = $65.60
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70,000 Hrs. / 16 Yrs.
(12hrs. / day)
40, 60, 90 Watts
2,700K -5,000K
(Warm to Bright White)
3,000 to 6,000 lumens
Type III, IV Distribution
Fits many acorn or
common globes
Integration Services
Available – PTLK, Adapter,
Globes
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Extensive thermal protection for
longevity
No wasted light from omni-
directional lamps, low light pollution
Directed light to where it used
Sealed light engine – no bugs &
low depreciation
Sized to fit adapters, fast installation
Custom plate adapters available
Driver in pole housing
DLC Listed for Rebates
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Lumens
Photopic 4,400 3,600 5,500 8,000 13,800
Scotopic 9,240 2,770 3,470 5,040 8,700
37W LEDioc
5000K/E26 BASE
- Designed to be Same Size and Configuration of Existing Lamp Sources
- Maintains Light Source Look and Feel in Retrofit
- Effective Replacement for HPS to 150W
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Existing High Pressure Sodium (HPS) Decorative Pole Lamp
LED Retrofit Decorative Pole Lamp
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Park Lighting Retrofit
Decorative Pole Lighting
3,000K / Mogul Base
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Need more than a typical fixture
◦ Rugged environments of outdoor lighting
◦ Intuitional / Commercial / Architectural
◦ Performance in outdoor conditions
Desire greater efficiency
◦ Lower energy bills
◦ Saving of maintenance costs
Seek guidance to find the best fit
◦ Of technology to application & customer’s property
◦ Sort through the many choices in the market
◦ Claims versus performance
Benefit from understanding the experience of products in
the field
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Metro:
The Outdoor Lighting Design Specialist & Experts
Balancing the tradeoffs and decisions in implementing in energy efficient lighting
Call: 518-409-8090
Write: info@metroledlighting.com
Visit: www.metroledlighting.com
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