Who invented the light bulb

Light bulb was invented by Englishman Humphry Davy 1802, but was too weak and did not last long, but has shown the way all others. The first real light bulb is also made Englishman James Bowman Lindsay, he demonstrated a constant electric light at a public meeting in Dundee, Scotland. He stated that he could "read a book at a distance of one and a half feet".
Many still think that the light bulb invented by Thomas Alva Edison, but it was only improve, and protect as his patent.