2011年4月25日 星期一

Selecting LED Flood Lights for Structural and Area lighting

Selecting LED
Flood Lights for Structural and Area lighting
LED floodlights have higher
reliability in comparison to incandescent and neon lights. The solid state
light-emitting diodes (LED) produce a very bright light for a small amount of
power. The distribution of a beam of light from an LED floodlight is "shaped"
and directed by the reflector. Floodlighting is generally utilised outdoors and
luminaries can be mounted on a pole, mounted onto the side of a building or
installed at ground level.

Floodlights need to meet two very specific
architectural requirements: they need to perform well in terms of area lighting
requirements as well as being aesthetically in keeping with the function of the
area. To illustrate: a marine loading dock would have a lesser aesthetic
floodlighting requirement than a stadium or public roadway.

Ground level
LED floodlights are often to light-up landscaping and architectural features.
Such highlighting helps bring focus to specific structural details because light
instinctively attract a viewers attention. It helps to avoid trying to highlight
too many architectural elements at once because this creates the visual
dissonance and destroys the "dramatic" appeal of focused lighting.In the case of
Cree a significant led light bulbs
amount of their LED sales come from the purchase of Cotco whose primary focus
was on moving message panels used in displays/electronic bill boards. 


When choosing lighting for buildings it is important to be aware that
under lighting the base and upper levels of a structure while focusing lighting
on a mid-section of it can create a "floating" effect which is rarely visually
appealing.Unlike compact cfl bulbs
fluorescent light bulbs, LED based light bulbs provide a variety of lighting
options- including the ability to provide a wide range of light, which allows
them to act as a proper replacement light bulb A good rule of thumb would be to
use smaller washes of lighting for the entire structure and to couple this with
stronger LED floodlighting to emphasis desired feature or features.


Whether you are lighting a retail park, a parking lot or a small office
complex you will want to maximise the amount of "usable" light (i.Light up the
architecturally table lamps interesting
parts of your home.e.: light that falls on structures and pathways) and minimise
light that spills into unused areas such as reflection to the sky or light
scattered onto neighbouring areas.While SmartView has been slow DSTT and unstable in the past, it seems to
have improved greatly with recent updates. It is also useful to note that a high
percentage of reflected light is reflected upwards. This can be exacerbated when
up lighting a feature. It is best to avoid up lighting when the physical
material that a structure is built on has a highly reflective surface.



Curved reflectors in an LED floodlight will result in a conical beam of
light which is useful for targeted lighting.The replacement lighting we feel is
far led downlight superior to that of
the LED lighting. Rectangular reflectors form a more scattered bean and are
often used to light up larger areas such as parking lots or sports fields. Also
worth noting for such large areas: The costs of installing and maintaining
secure lighting in large areas will be of primary concern because they are
typically more expensive. Additional portions such as louvres and visors will
also affect the shape of the beam.

For parking areas and roadways LED
floodlights will usually be set atop high poles and it is best to choose energy
efficient, strong scattered luminaries to maximise spacing between the units.
Fewer poles incur lower installation and maintenance costs and the selected
wattage (250 watt or less) will directly influence maintenance costs.

It
is recommended to select a lighting supplier that can advise and substantiate
the appropriate units for each individual lighting purpose.

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