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LEDCity AG
Werdstrasse 21
CH- 8004 Zürich
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portrait patrik kuster led city CMD
catrina klee ledcity
julian wiederkehr ledcity

We would also be happy to advise you personally to find the ideal lighting solution for your application!
We look forward to hearing from you.

Make an appointment

FAQ.

– Lower energy consumption

– Insensitive to vibrations

– Contains no harmful substances

– Low heat emission

– Lower air conditioning costs

– High efficiency

– Long service life

– Low operating costs

– No switch-on delay

– No flickering

The purchase price is higher. However, due to the lower operating costs, the investment costs are amortised within 1-3 years, meaning that several hundred francs can be saved per light source.

The grey energy caused by the production process is higher. However, due to the improved efficiency and long service life, the total energy consumption is several times lower.

You can choose between different colour temperatures. The spectrum ranges from warm to blue, modern colour temperatures. The neutral 4000K colour temperature has become the most popular on the market. The code 840 is used for this on the light source. This describes a colour rendering of > 80% (8) and a colour temperature of 4000 K (40).

The harmfulness of light can generally be divided into three categories:

Ultraviolet radiation (better known as UV radiation)

This can cause severe damage to the eyes and skin. Commercially available LED light sources generally emit very little ultraviolet radiation and are therefore harmless.

Blue light

Blue light can be particularly dangerous for the retina in the eye. The reason for this is that blue light can be responsible for the faster death of the individual photoreceptors on the retina, thus impairing the eye’s vision.

As a study by the Swiss Confederation has shown, most LED lamps on the market can be classified as harmless. A distinction is made between four groups:

Free group: Despite long exposure times, there are no risks to the retina.

– Risk group 1: There is a low risk from an exposure time of 100 seconds.

– Risk group 2: There is a medium risk from an irradiation duration of 0.25 seconds.

– Risk group 3: There is a high risk even with very short exposure times.

The LEDCity tubes are assigned to the “free group”.

Flickering

The human eye sees light fluctuations up to a frequency of 60 Hertz. However, the retina in the eye recognises light fluctuations of up to 200 Hertz. This flickering can cause health problems such as headaches or eye pain. Fluorescent tubes sometimes flicker at 100 hertz. It is therefore also worth replacing them with high-quality LED light sources for health reasons. LED tubes from LEDCity flicker at a frequency of 2300 hertz. The retina does not perceive this flickering, so there is no risk of damage to health.

Fluorescent tubes fall into the category of light sources and are also known as fluorescent tubes, neon tubes or light tubes.

These light sources have two electrodes at both ends. The tube itself contains a gas. As soon as electricity reaches the ends, the electrodes heat the gas, which then emits black light/UV light. The fluorescent material (hence the name fluorescent tube), which is located inside the tube, lights up as soon as it is irradiated with UV light. We perceive the now radiating fluorescent material as light.

In contrast to the tubes described above, LED tubes do not contain gas, but light-emitting diodes that generate the light.

No. Luminaires contain a light source. In other words, the term luminaire refers not only to the light source, but also to the housing in which the light source is located. Nowadays, unfortunately, more and more luminaires are being sold in which the light source is no longer replaceable. With all LEDCity solutions, however, the light source remains replaceable for a better ecological balance.

So that the light sources can also be used in new construction projects, we also offer modular luminaires in which our light sources can be used.

On August 24, 2023, a significant step was taken in the implementation of the plan to eliminate inefficient lighting. As part of this measure, the European Commission banned the placing on the market of fluorescent tubes, commonly known as FL tubes. Existing stocks can still be used, but no further imports have been permitted since this date. This measure is intended to help promote the use of more efficient lighting technologies such as LEDs and thus increase energy efficiency.

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