ᐅ Looking for Exterior Up/Down Lights – Purchase Recommendations Requested

After three hours of research, I finally found some. These now come with permanently installed LEDs. If they last as long as promised, they will outlast me for the expected service life. Let’s see.

Are you still revealing the secret of the winner of the 3-hour (3-h) marathon?

Of course. Up-Downlight "Gemini" by Eco-Light, 22cm (9 inches) wide, anthracite, 20 W, approx. 1,200 lm.

VaG

4000K would be too cool for me, and 1200 lumens from 20W is too inefficient. But it is really a challenge to find the right LED lamp. There are too many parameters that need to fit.

The parameters suit us well; 4000 K is not that bright, our recessed spotlights in the entryway area also have 4000 K. 20 W is actually quite substantial, but the lights are only meant to be on when we are outside on one of the terraces. Considering the expected operating hours, I don’t mind. I also have to factor in the price. I will report back on how they perform.

Good luck

Ippebson schrieb:

4000 K is not that bright,

4000K can be either bright or dim because it refers to the color temperature, not the amount or intensity of light.

Ippebson schrieb:

20 W is really not little

20W can be low or high, as it indicates the power consumed, not the light output.

Of course, these could be exactly the right lamps for you!


A quick tip for those searching to understand the relevant values

• Color temperature – unit Kelvin – Higher values >4000 similar to midday sunlight (towards blue), lower values <3000 similar to evening sunlight (towards orange)
• Color rendering accuracy – unit CRI – CRI>90 is considered relatively color-accurate.
• Light output – unit lumen – amount of emitted light. This is not the brightness.
• Light intensity – unit candela or lux – intensity of the light
• Beam angle – if relevant, in degrees – determines the intensity of light relative to the total light output

Example: You have 2 LED spots installed in a ceiling. Both have the same light output – say 1000 lumens. One spreads the light over a 45-degree angle, the other over 25 degrees. On the floor, you get two differently sized light circles. The larger circle is noticeably dimmer than the smaller circle. The same amount of light differently focused results in different light intensity (brightness).

By the way, LED efficiency (light output per watt) inherently decreases with lower color temperature and higher CRI. This, however, does not significantly affect household electricity consumption.