licht.wissen No. 06 "Shop Lighting - Attractive and Efficient"

licht.wissen 06
Shop Lighting – Attractive and Efficient
Parking facility, facade and entrance lighting
At night, the appearance of the outdoor space that forms the context of a retail store or shopping mall strikes a
magical note. Differentiated lighting solutions underline the character of buildings and their entrances and thus
combine to create a unique lighting dramaturgy for the urban environment.
Since the triumphant march of the neon
sign at the beginning of the 20th century,
illuminated advertising and lighting effects
have been an integral part of the nocturnal
face of the city. Apart from classical,
eye-catching illuminated signs, facade
and building lighting plays an increasingly
important role here. Emblematic architecture
is used to direct consumer attention
to stores and commercial offers on busy
downtown streets or to draw visitors from
afar across the anonymous space of a
business park. There are two options here.
Firstly, architecture can be illuminated
from inside through a transparent building
shell – a solution popular for shop windows
and interiors close to facades. Secondly,
solid or opaque facades can be illuminated
in a range of ways by exterior luminaires –
lending subtle emphasis to architectural
details or making a dramatic statement with
dynamic, colourful event lighting.
Highly differentiated
Vertical surfaces in the urban environment
play a major role in shaping squares,
streets and buildings. For psychological
and aesthetic reasons, facade lighting is
an important element of urban night-time
lighting. Different types of facade require
tailored lighting concepts to emphasise
the qualities of their architecture. Just as
buildings look different in daylight, differentiated
lighting solutions can be developed
to craft a distinctive appearance at
night. As a matter of principle, opaque
facades need to be treated differently from
transparent buildings. Apart from planar
illumination of solid facades, there is also
the option of accentuating the contours of
the building or of individual structural components.
With glass architecture, however,
the impression of a gleaming core can be
created by illuminating specific surfaces
inside the building. During the day, the
interior of such buildings is hidden from
view by reflections on the glass due to
the high illuminance of daylight. At night,
however, transparent buildings gain depth
as a result of the visible dimensions of
their interior space. With lighting control,
programmed scenes can be automatically
created to cast facades in the desired light
in response to photoelectric sensors or
timers.
Calling card
Entrances – which are the calling card of a
building at night – also merit attention. As
well as highlighting architectural elements
or guidance systems, lighting can be used
here as either a primary or secondary tool
for creating atmosphere and facilitating
orientation. The simplest way to harness
light for visitor guidance is to ensure a
higher level of lighting at the entrance
than in the adjoining parts of the building.
A carpet of light outside an entrance
extends a welcoming invitation to visitors.
Additional diffuse lighting, e.g. provided by
wallwashers, lightens shadows on faces
and thus creates an agreeable basis for
communication at the door. Glancing light
can be used to set dramatic accents.
Route and step lights make for safety on
the approach.
[12] Windows bathed in coloured light
make the store an eye-catching sight at
night.
[14] The vibrancy of the interior lighting
is carried outside by large floor-to-ceiling
windows, lending the store a magnetic
attraction.
Outdoor and indoor parking facility lighting
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Road safety first [11, 13]: Accessing shopping streets necessitates indoor and outdoor parking. Here, because moving
and parking vehicles encounter both pedestrians and cyclists, road safety has priority. As traffic loads increase, so
too does the risk of accidents. That rising risk is countered by tailored, dark-zone-bridging lighting, which additionally
facilitates orientation and recognition of vehicles, persons, boundaries and obstacles. Lighting also gives users a
greater sense of security and guards against crime. The requirements for outdoor parking facility lighting are met by
column luminaires with high-precision light-controlling optics. Metal halide lamps or LED modules – with electronic
operating gear – make for an economically efficient lighting installation. Adequate brightness inside indoor parking
facilities is provided by T26 or T16 fluorescent lamps; electronic ballasts ensure energy-efficient operation, which can
be enhanced even more in multi-storey car parks by daylight-dependent lighting regulation.
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