This review is dedicated to LED bulbs to replace ordinary incandescent bulbs in their home.
For the declared power of 18 watts of LED-based bulbs, this is very decent, let's see how they really show themselves - I will try to describe my feelings and the positive / negative sides of the guest from China.
LED lighting (LED), the main plus is that very little energy is spent on heat radiation and more in the luminous flux. 18 watts - I hope the brightness is comparable to the brightness of a 20-watt fluorescent light bulb that I have been using for a long time, and what came out of this light bulb - we continue to read further.
The bulbs came in a small cardboard box. It was the first pleasant surprise - viewing photos and a couple of reviews did not convince me that the bulbs were so compact - I expected that they would be twice as large.
The assembly / soldering of the bulbs is of high quality; there are even holes in the end for cooling them.
We see that the bulb consists of LED strips soldered in various places.
Comparisons with other types of bulbs.
Lighting!
Everything was photographed manually, after the first photo the setting did not change, BB - sunlight.
20 watt fluorescent (energy-saving) HYUNDAI. The light meter on the floor, opposite the light bulb, issued 40 lux.
A typical 60-watt incandescent bulb. 12 lux.
The object being examined. 20 lux. I expected more.
Conclusion
1. Delays when the light is turned on - minimal, not noticeable by eye.
2. To replace the 20-watt fluorescent fluids are rather weak, already used to them. But for not large rooms; toilet, pantry or for chandeliers, where the size of the bulbs is important - it is quite acceptable.
Cost: ~ 67