The development of the flashlight Edison invented the l […]
The development of the flashlight
Edison invented the light bulb, Faraday invented the battery, which is the real invention of the flashlight. However, the light-emitting performance of its bulbs is very unstable, and the flashlight is called "Flashlight" in English. It wasn't until the late 1960s, with the advent of alkaline batteries, that the "lighting" function of the flashlight was truly complete.
first generation flashlight
Features: tungsten filament light bulb + alkaline battery, with the surface electroplated iron sheet as the shell: the first generation of flashlight, we commonly call it "old-fashioned flashlight", this kind of light bulb generally adopts tungsten filament incandescent light bulb, which has low luminous efficiency and relatively short service life. Easily burnt out. The battery uses a large alkaline battery, which has a large volume and a low battery life. The shell of the flashlight is an iron sheet with electroplating on the surface. Although it is lightweight, the process is relatively simple.
Second generation flashlight
Features: The bulb is filled with protective gas + high-performance battery, and aluminum alloy is used as the shell material: The second-generation flashlight has made a new breakthrough in both performance and appearance. A typical representative of the second-generation flashlight is the use of krypton bulbs + alkaline batteries, which have longer bulb life and longer battery life. The aluminum alloy is used as the shell material, and the surface is treated with oxidation treatment, with fine craftsmanship, beautiful appearance, rich colors and good texture. Another typical representative is the use of xenon bulb + lithium-ion battery, which has a longer bulb life, greatly improved brightness, and higher color temperature. It also proposes a new concept of "tactical flashlight", which has opened up a new market for the development of flashlights.
The third generation flashlight
Features: The application of a new light-emitting technology - LED. In terms of color temperature, it has reached an unprecedented height, approaching or even exceeding the color temperature of white light, and the power consumption is even lower. The main feature of the third-generation flashlight is the use of LED bulbs, because of the structure of the LED itself, the reliability is better. The light-emitting mode also appeared on the flashlight for the first time, and it was very popular once it was launched. In particular, the advent of the LED flashlight has brought a better tomorrow to the people of the world and has driven the development of the society.
Fourth generation flashlight
Features: Built-in open programmable intelligent control chip, which can customize the lighting mode through special software - smart flashlight. A beautiful and advanced product, let us look forward to its arrival together.