Applications for LED conversion kits
Decisions for the future
Towns and cities, local councils and energy providers are faced with the challenge of investing in energy-saving technology in times of increasing energy prices and hard-pressed budgets.
From both a technical and economic viewpoint though, one thing is clear –
the future is dedicated to LED technology.
The question now is which refurbishment situations make sense, and which can be implemented in the long run both technically and economically?
According to the type, use and condition of existing luminaires, a wide spectrum of possible measures are available for the operators of outdoor lighting systems. Such action ranges from replacing complete luminaires/masts [III] (with obsolete installations) and the refurbishment/upgrading of existing luminaires with a long-term utilisation horizon that are worthy of keeping [II], to the use of LED replacement light sources [I] with short to mid-term continued utilisation horizon.
When considering which existing luminaires appear to be candidates for keeping and upgrading, a range of criteria can be evaluated. Usually decorative and design-oriented luminaires are considered for upgrading to LED technology more than purely technical luminaires.
|Traffic roads||Mid- to high lumen output
High light points > 6 m.
Specific light distribution characteristic.
Long service life, robust, with easy maintenance
|Usually closely connected
|Residential streets, |
|Low lumen output
Light points from 4 to 5 m.
Often "all-round distribution".
Durable with low cost
|Decorative appearance. |
Moderate purchase price.
cylinder and bell luminaires
|Low to mid-lumen output.|
Light points from 4 to 8 m .
Often all-round distribution .
Partly higher price segments .
|Instrument for urban
and landscape architecture.
|Moderate lamp performances as well as high design value indicate luminaire applications that are potentially ideal for LED refurbishments.|
As diverse as your existing luminaires – the LEDiKIT® portfolio
The spectrum of existing outdoor luminaires covers a wide diversity of different models, ranging from industrially manufactured large-series products to unique, wrought-iron pieces. In many cases these are particularly valued and certainly worth keeping, not only because of their construction materials but also due to their role as design elements in city and landscape architecture.
In terms of mounting methods, a differentiation is made for example between post-top, side-entry, bracket-mounted, surface-mounted, suspended luminaires and columns. The basic geometric shapes of mushroom, cylinder, cone, globe, square and hexagonal luminaire (Group B) mostly have in common that the light source is either vertically fixed or suspended, and that the radiation of light is often specifically guided via an optic (reflector, prismatic glass etc.). In contrast to this, heritage lanterns in particular have only one socket with a light source positioned behind either clear or structured glass. Mushroom luminaires are often equipped with white-opal covers. The type or state of preservation of the existing light optic is important for optimum selection of the upgrade solution.
Canopy, arched and bell luminaires (Group A) usually have their fixing point above, so that with direct light distribution to the ground no housing component or mast throws shadows and so that low levels of light are radiated into the upper hemisphere.
Secondary reflector luminaires or secondary luminaires (Group C) feature especially low glare, whereby the light from a highly compact light source concealed from the observer is reflected via a deflection reflector onto the working plane. With groups A and B, high pressure mercury vapour lamps (HME) or high pressure sodium vapour lamps (HSE) with E27 screw bases are frequently used. Group C luminaires on the other hand are mostly equipped with metal halide lamps (HIT or HIT-DE), thus placing very high demands on possible LED upgrading solutions due to their high output density. We also offer solutions unique in the market for this application with the LEDiKIT® Streetlight SP.
|Examples of various basic geometric shapes|
|Group A||Canopy, bell, arched |
and suspended luminaires
|Group B||Mushroom, cylinder, cone; |
globe and multi-edge luminaires
|Group C||Secondary reflector luminaires |
and secondary luminaires
|Group D||Light columns and |