Buy E27 bulbs that can be used as a 15W incandescent bulb
Here you will find light sources for the large E27 screw socket that can be used as a 15W incandescent bulb. Most of them are LED bulbs with filaments that look like the traditional glowing wire. An LED bulb in this category uses much less power, up to 2.5W, but gives up to 180 lumens, which is comparable to a 15W incandescent bulb.
All bulbs in this category give a soft light. Think about the colour temperature when you choose: the warmer colour, similar to a candle flame, is around 2100K, while warm white incandescent light is 2700K. Halogen light is slightly whiter, at 2800 to 3000K.
Choose between the bulb shapes for the large socket: the standard shape, also called Classic A, with a diameter of 60 mm is the classic incandescent bulb shape. The small globe, 45 mm in diameter, is also called Classic B. The lantern bulb starts narrow at the socket and widens to about 60 mm, and often has a decorative filament. The tube bulb is straight and comes in different lengths and diameters.