Decorative lighting
With decorative lighting , such lighting systems are described, which in addition to the lighting systems used exclusively for the illumination of the areas of visual tasks of jobs according to the criteria of the DIN EN 12464-1 (lighting of workplaces indoors) or DIN EN 12464-2 (lighting outdoor workplaces) are necessary, an increase in lighting quality is achieved.
Basics
The decorative lighting in the interior lighting can be, for example, accent lighting that serves to emphasize areas of the room or individual objects. In the open air, it is mostly about spotlights or independently acting light objects. Very bright accents come into their own in indoor and outdoor lighting: the level of the accent lighting is above the level of the general lighting.
Indoor workplaces
Decorative lighting includes e.g. B. also the lighting systems with which the lighting of vertical room surfaces (walls) in the field of vision of the employees in administrative buildings are implemented, if these are not used at the same time to illuminate the visual task area and go beyond the requirements of DIN EN 12464-1.
An increase in the quality of lighting is also achieved with lighting systems to support the biological rhythm. Whether these systems should also be classified under the term decorative lighting is currently under discussion. Chronobiologists recommend installing higher illuminance levels in interiors than are specified in the lighting regulations - not for the whole day - but for a limited time. Primarily, daylight should be used for this, for example by staying outdoors or in light wells during breaks. If there is not enough daylight, artificial lighting must be used, e.g. B. with so-called "biological islands of light" that are supplied with high illuminance levels and light sources with a high, circadian effect factor. A control of artificial lighting based on natural daylight - changeable in level and in the light color - supports the biological functions of humans in insufficiently naturally lit rooms.
With the appearance of the Energy Saving Ordinance (EnEV) and DIN V 18599 “Energetic assessment of buildings”, the title decorative lighting gains a new meaning. The procedure described in DIN V 18599 for determining the energy for lighting systems only covers the lighting systems that are required to meet the minimum requirements for lighting for the visual task areas according to DIN EN 12464-1. The energy requirement must not be reduced at the expense of the lighting quality features. Decorative lighting systems are not even included in the process. For lighting solutions that go beyond the minimum requirements of DIN V 18599 for qualitative reasons (e.g. higher visual requirements, long-term activities, older employees (pupil clouding), etc.), only the energetic proportions to achieve the minimum requirements need to be taken into account. This becomes clear from the various publications by leading employees of the committees that have developed the EnEV and DIN V 18599.
Private households
Decorative lighting for private households describes such lighting systems that are used to emphasize areas of space or individual objects. According to the EnEV and DIN V 18599, lighting systems in private households are not taken into account when determining the final energy .
Specialist literature
- Winfrid Hauke, Rolf Thaele, Günter Reck: RWE Energie Bau-Handbuch. 12th edition. Energie-Verlag GmbH, Heidelberg, ISBN 3-87200-700-9
- Hans R. Ris: Lighting technology for the practitioner. VDE - Verlags GmbH, Berlin - Offenbach, ISBN 3-8007-2163-5