Primary school students around the world have always known from textbooks that the light was invented by Edison, but in 1884, Swan lights lit up the private houses of the British House of Commons, the British Museum and celebrities on the British Isle. In order to invent the incandescent lamp, Swan and Edison almost fought a lawsuit, eventually settled out of court and formed a joint company. In fact, Edison's "electric lamp patent" has been constantly challenged by other inventors. After several lawsuits, it was decided who the "incandescent lamp inventor" would fall into.

It is gratifying that the disputed patent rights have not affected people's enjoyment of the benefits of light. By the end of the 19th century, the electric lighting in the developed industrial areas of the world had taken an absolute advantage. Eddie, who had made outstanding contributions to the invention, became a world-renowned great inventor, and Swan was awarded the knight title in 1904. Over the next century, incandescent lamps were brought to every corner of the world. In 1920, Lenin attended the inauguration ceremony of a power station on the outskirts of Moscow. Since then, local residents have used electric lamps. They think it was brought by Lenin. They have always called incandescent lamps "Iric lamps" - Iric is Lenin's father's name; lotus lanterns in Tiananmen Square and cotton peach lamps along Chang'an Street, from Zhou Zong. The incandescent lamp has been used since the appearance of the lamp was selected. It was not until the National Day of the 35th anniversary that the lamp was replaced by other light sources. For most ordinary people, incandescent lamp is a warm yellow light that can be seen as soon as they look up at night. It is a symbol of home.

It may not have occurred to Sir Edison and Sir Swan that, in September 130 years later, incandescent lamps accompanying people through countless nights began to stop production and import in European Union countries; Switzerland has recently formulated a series of policies to gradually change people's consumption habits and stop using incandescent lamps; the United States, Australia, the new Countries such as Brazil, Russia, Canada, Japan and China have begun to implement the concept of "energy-saving light source" from the government level. The ban on incandescent lamps is mostly scheduled for 2012. As for the reasons for banning incandescent lamps, many people can say that they consume huge amounts of energy and have low energy utilization. Compared with energy-saving light sources, incandescent lamps consume only about 5% of their energy for lighting and most of the rest is converted into heat.