Flashlight for easy outdoor mobile lighting

The development of mobile lighting tools can be traced back to the early stage of human society development - primitive society. Since humans learned to drill wood to make fire, mobile lighting has experienced the development process from fire, oil, candles to flashlights. Mobile lighting tools have undergone numerous changes, including torches, oil lamps, candles, kerosene lamps, incandescent bulb flashlights, xenon bulb flashlights, and LED flashlights. Oil lamps have undergone several improvements. The oil used in oil lamps was changed from animal oil to vegetable oil, and finally to kerosene. In order to prevent the fire from being blown out by the wind, people added a cover to the oil lamp. From the early paper cover to the glass cover, such oil lamps are not afraid of wind and are convenient for outdoor mobile lighting. While using oil lamps for lighting, humans are still looking for other mobile lighting methods. Around the 3rd century BC, someone made candles out of beeswax. By the 18th century, candles made of paraffin appeared and mass-produced by machines. More than 100 years ago, the British invented the gas lamp, which made a big step forward in the way of human lighting. The movable lighting tools such as torches, candles, oil lamps, and gas lamps have not left the fire, and are all illuminated by the light emitted by the burning of matter. At the end of the 19th century, Edison invented the electric light bulb, which rewrote the history of human lighting since then, and human beings have entered the era of electric lighting.