LED (light-emitting diode) has been used in a variety of electronic equipment for many years, but a few years ago, the production of LED brightness is not too high, the luminous efficiency is also low, so often used only as a indicator. In recent years, with the high brightness LED technology matures, the cost is also declining, a variety of different specifications of the high brightness LED is also widely used in the new lighting equipment. At present, the high brightness of the LED application in the flashlight, it can be said that the most suitable, but because of the high efficiency of this high brightness LED, long life, the color of pure light-emitting. At present, it is impossible to build a high power LED, but the small power LED is very suitable for small lighting devices such as flashlights.
The LED flashlight on the market there are many types, most small key chain, and multi lamp type, single lamp power etc.. From the point of view of the type using power, using a AA battery (5 batteries) or a AAA battery (7 batteries), some with three AAA batteries, some use three button batteries, as well as the use of manual generation etc.. Here are a few common types of LED flashlight on the market performance characteristics for the purchase of reference.
Single lamp high power LED flashlight, refers to the use of a single LED to 1W power 5W light flashlight. High power LED used the single lamp flashlight, with the use of domestic are imported. High power LED generally imported light effect is high, but the price is much higher, so the single lamp high power LED flashlight imported LED, some of the price up to two hundred or three hundred yuan.
The single lamp power supply of high-power LED flashlight mostly uses three AAA batteries, but also can use a circular rechargeable lithium battery power supply. There are a few single lamp high power LED flashlight uses three AA batteries, and also equipped with AA NiMH battery and charger. The single lamp high power LED flashlight reference price of thirty yuan to more than and 300 yuan. Domestic single lamp high power LED flashlight for general 1W ~ 3W for thirty yuan to fifty yuan, the domestic single lamp high power LED flashlight 5W price of about fifty yuan to more than and 90 yuan.
The biggest advantage of this single lamp high power LED flashlight is the spotlight effect is good, but still want to see whether the production of flashlight condenser is excellent. Single lamp high-power LED flashlight is normal, the condensing effect is close to ordinary flashlight, and the brightness is even higher. The utility model is especially suitable for the outdoor lighting of the backpack family, the search for articles or the use of a light signal connection with each other.