Line lamp
Line lamps are tubular lamps . The elongated lamp housing originally contained filaments like incandescent lamps . Today's retrofits rely on energy-saving LEDs .
commitment
Line lamps were popular in bathrooms, kitchens and as a light strip in cupboards. Line lamps were also used in large quantities in event technology, especially in the area of stage shows. Due to their relatively large surface, they offer a distributed, glare-free light. In contrast to fluorescent lamps, which were mainly used with a higher color temperature and a lower color rendering index , they combined the warm white light of incandescent lamps with the shape of small fluorescent lamps.
Designs
Line lamps are produced in lengths of 300, 500, 1000 mm; the diameter is around 30 mm in all variants. The line lamp is available in opal white and transparent versions.
There are two different types of termination according to IEC 7004-112 for the lamp base :
- With the S14d base , a line lamp has only one base in the middle for elegant attachment.
- With the S14s socket , the line lamp has two sockets at the outer end for more stable attachment, which can also be housed in a separate housing. The 1000 mm line lamps are only available with two bases.
In the case of the sockets, the contacts are partially de-energized by safety switches if no lamp is plugged in.
Bulbs
The line lamp can be found in three different light sources.
Classic line lamps
The classic line lamps with energy efficiency class "G" were available under the following brand names until the ban on December 31, 2012 according to the Ecodesign Directive 2005/32 / EC :
- Crystalline of radium (clear glass bulb)
- Linestra from Osram
- Philinea from Philips
- Ralina from radium
The price for a classic line lamp was significantly higher than that of a classic fluorescent lamp comparable at the time . However, the sockets were much cheaper back then because they did not need a ballast. Due to the design, there was no switch-on delay and the light did not flicker when switched on.
Energy-saving line lamps
Up to the market launch of LED line lamps, energy-saving line lamps with energy efficiency class "B" were also produced, which technically corresponded to compact fluorescent lamps with electronic ballasts. On April 1, 2015, the EU directive banned the production and sale of lamps that contain mercury and have a light output of less than 80 lumens per watt. Since December 31, 2018, the EU mercury regulation has imposed an export, import and manufacturing ban on compact fluorescent lamps.
LED line lamps
Since 2016, LED variants with energy efficiency class "A" have dominated the retrofit market for line lamps. Inside, next to the driver, there is a circuit board equipped with LED chips. Due to the directional emission of the LEDs, an opal bulb made of glass or plastic is often installed for diffusion.
LED filament line lamps
There are also transparent LED line lamp available, those based on LED-filaments ( English LED filaments ) are constructed which mimic the look of classic transparent line lamps and light with an emission angle of 360 °.
See also
Web links
- radium.de / ... - Radium manufacturer data sheets (1000 mm)
Individual evidence
- ↑ Andreas Sebayang: Inefficient lamps: Extended lamp ban comes into force. In: golem.de . April 1, 2015, accessed October 14, 2019 .
- ↑ Gradual ban on products containing mercury. Press release No. 001/18. In: bmu.de . January 4, 2018, accessed October 14, 2019 .