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Flashlight mobile lighting development history

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The development of mobile lighting tools can be traced back to the early stage of the development of human society-primitive society. Since humans learned to drill wood to make fire, mobile lighting has experienced a development process from fire, oil, candles to flashlights. Mobile lighting tools have undergone countless changes, from torches, oil lamps, candles, kerosene lamps to incandescent bulb flashlights, xenon bulb flashlights, and now a dazzling array of LED flashlights. The oil lamp has been improved many times. The oil used in oil lamps was changed from animal oil to vegetable oil, and finally replaced by kerosene. In order to prevent the wind from blowing out the fire, people added a cover to the oil lamp. From the early paper cover to the later glass cover, this kind of oil lamp is not afraid of wind blowing and is convenient for outdoor lighting. While using oil lamps for lighting, humans are still looking for other mobile lighting methods. Around the 3rd century BC, someone made candles with beeswax. In the 18th century, candles made of paraffin appeared, and mass production of machines began. The British invented the gas lamp more than 100 years ago, which made the human lighting method a big step forward. Movable lighting tools such as torches, candles, oil lamps, and gas lamps do not leave the fire. They are all illuminated by the light emitted by the burning of substances. At the end of the 19th century, Edison invented the electric light, which has since rewritten the history of human lighting, and human beings have moved towards the era of electric lighting.

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Prototype

Edison invented the light bulb, Faraday invented the battery, and invented the real flashlight. However, the light-emitting performance of the bulb is very unstable, sometimes bright and dark, hence the name "Flashlight". It was not until the late 1960s that the "lighting function" of the flashlight was completed with the advent of alkaline batteries.

First generation flashlight

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 Tiger head flashlight

Features: Tungsten filament bulb + alkaline battery, with surface-plated iron sheet as the shell. The first-generation flashlight, commonly known as "old-fashioned flashlight", generally uses tungsten filament incandescent bulbs, which have low luminous efficiency, short service life, and are easily burned out. The battery uses a large alkaline battery, which has a large capacity but low battery life. The shell of the flashlight is an iron plated on the surface, which is lightweight but simple in craftsmanship.

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Second generation flashlight

Features: The bulb is filled with protective gas + high-performance battery, and aluminum alloy is used as the outer shell material. The second-generation flashlight has a brand-new breakthrough in both performance and appearance. A typical representative of the second-generation flashlight is the use of krypton bulb + alkaline battery, which has longer bulb life and longer battery life. Aluminum alloy is used as the shell material, and the surface adopts oxidation treatment process, with fine craftsmanship, exquisite appearance, rich color and good texture. Another typical representative is the use of xenon bulbs + lithium-ion batteries, which have longer bulb life, greatly improved brightness and higher color temperature, and proposed the concept of "tactical flashlights", which opened up a brand new market for flashlights.

The third generation flashlight

 LED flashlight

Feature: The application of new light-emitting technology-LED. The color temperature has reached an unprecedented height, close to or even exceeding the color temperature of white light, and the power consumption is lower. The main feature of the third-generation flashlight is the use of LED bulbs, which have better reliability due to the structure of the LED itself. The luminous mode also appeared on the flashlight for the first time, and it was very popular once it was launched.

The fourth generation flashlight

Features: Built-in open programmable intelligent control chip, can customize the light-emitting mode through special software-a new generation of smart flashlight-Naride myTorch smart flashlight (Smart Torch), combining traditional flashlight dimming technology with IT technology , Built-in open programmable intelligent control chip, users can customize the personalized flashlight luminous mode through special software. The general term for a new generation of flashlights

 

Source: Queendom Technology Co., Ltd. Author: JACKY date: 2020 May 22https://www.china66.net/news.html

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