LED flashlight into our lives!
As a high-efficiency lighting, light-emitting diodes have continuously entered our lives. With the emergence of LED diode flashlights in the past few years to the emergence of single-lamp high-power 1W and 3W, our flashlight choices have been continuously enriched. In particular, the emergence of metal flashlights made of aviation aluminum alloy has attracted many buyers. Of course the price has dropped from the sky-high price. It has been very suitable for many, many buyers. The LED flashlight has dropped to more than ten yuan each. The high-power single lamp is a new product, and the price is relatively high.
The tactical LED flashlight is composed of multiple diodes and has a high color temperature. It gives people a very bright visual experience, which is his characteristic. In addition, he is very energy-efficient, and a AA battery can last more than ten hours. The other is the magnesium-aluminum alloy metal shell, which is small and exquisite in appearance, windproof, rainproof and corrosion-proof, which is very suitable for outdoor use. But the biggest shortcoming of this product is that the irradiation distance is very small, usually more than 20 meters.
Can't see clearly when you are far away. The above are the shortcomings of this flashlight itself. The following are some small factories because they see large profits and follow production, and the price continues to drop, which causes the aluminum alloy material of the flashlight to decline, and the weight is insufficient. In addition, to cater to the mentality of many people, the current is adjusted to increase the LED. Bright. In fact, the diode of the red dot flashlight combo is not the highest in the overall cost. It is a magnesium-aluminum alloy shell. The most important thing is weight and craftsmanship. The products produced by big factories are more formal, with more weight, and the craftsmanship is very particular. The craftsmanship of some small factories is very rough. And the LED is to control the current, otherwise it is very easy to burn out. Therefore, the selection of LED must pay attention to the above points.
In addition, the difference between LED multi-lamp and single lamp 1W, single lamp 1W is a new type of light source, which is very popular abroad. This LED is mainly a lamp with high power design. There is also a condenser. If the quality is good, it can illuminate more than 100 meters away. But the price is higher. The good ones all have drive circuits. The appearance is also very exquisite. And used metal oxide film as exterior decoration. Durable and durable. The choice of this product must depend on the craftsmanship and workmanship as well as the size of the factory. Otherwise the quality cannot be guaranteed. But the price is high. Energy-saving energy without pollution is environmental protection. DC drive, ultra-low power consumption (0.03-0.06 watts per tube) electro-optical power conversion is close to 100%, the same lighting effect is more than 80% energy-saving than traditional light sources.
Long lifespan: Some people call LED light sources a longevity lamp, which means a lamp that never goes out. Solid cold light source, epoxy resin encapsulation, there is no loose part in the lamp body, there are no shortcomings of filament light, easy to burn, thermal deposition, light decay, etc., and the service life can reach 60,000 to 100,000 hours, which is 10 times longer than that of traditional light sources. above. Variety, LED light source can use the principle of red, green and basket three primary colors, under the control of computer technology, make the three colors have 256 gray levels and mix them arbitrarily, which can produce 256×256×256=16777216 colors to form different lights The combination of colors can be varied to achieve a variety of dynamic effects and various images.
It is environmentally friendly and has better environmental benefits. There is no ultraviolet and infrared in the spectrum, no heat, no radiation, low glare, and waste is recyclable, no pollution, no mercury, cold light source, safe to touch, and it is a typical green Lighting source.
High-tech, compared with the monotonous luminous effect of traditional light sources, green dot laser and flashlight sources are low-voltage microelectronics products that successfully integrate computer technology, network communication technology, image processing technology, embedded control technology, etc., so they are also digital information products. The "high-tech and cutting-edge" technology of semiconductor optoelectronic devices has the characteristics of online programming, unlimited upgrades, and flexibility.
LED flashlight is a new type of lighting tool that uses light-emitting diodes as the light source. It has the advantages of power saving, durability, and strong brightness. Purchased
Precautions
1. The number of heads is moderate. Generally, no more than 12 heads should be used for household use. It is better to use 2 to 3 batteries. If it is too large, it is a bit wasteful. You can determine what you need for other special needs.
2. The welding must be firm. Each diode is connected to the circuit board by soldering. If there is a bad solder connection, it may cause the bulb to not light up or affect the overall use.
3. Try to focus on the condensing surface of the electric beads. Unlike ordinary flashlights, this flashlight can adjust the focal length, so be careful not to have astigmatism when purchasing.
4. The contact of the power switch should be obvious. This kind of flashlight mostly uses a rotary switch, which is turned on when tightened, and turned off when loosened. If the contact is not obvious, it is easy to cause the phenomenon of turning on and off.
5. Pay attention to waterproof. Because it belongs to an electronic product, there is a circuit board in the front of the flashlight. Once water enters, it is easy to short-circuit and cause damage.
A typical flashlight has a battery-powered bulb and focusing reflector, and has a handle-type housing for hand-held use. Although it is a fairly simple design, it was not invented until the end of the 19th century, because it had to combine the invention of the battery and the light bulb. In the early days, it was called "flashlight" in English because of insufficient battery storage power, which means short-lived light.
More and more LED flashlight USB Zoom torch use light-emitting diodes to replace traditional light bulbs. The light-emitting diode has been invented for decades. In 1999, Lumileds, San Jose, California, USA invented a white high-energy halogen light-emitting diode. In 2001, Arc Flashlight applied this halogen lamp to flashlights. Light-emitting diodes can use less power but emit a stronger light source, so it is more power-efficient than traditional light bulbs. This type of flashlight has a long battery life, some up to hundreds of hours.
One misconception about light-emitting diodes is that they do not generate heat. Although low-energy light-emitting diodes do emit very low heat, high-energy light-emitting diodes can still emit high heat. The headlamp is a design that wears the lamp on the top of the head. The high-brightness headlamp worn on the helmet has been used by miners for decades. The gun light refers to the military and police flashlight that is installed on the gun and shines with high brightness to make it difficult for the enemy to look directly at the counterattack, and even to temporarily dazzle the target in order to knock it down. The gun flashlight is often replaced with a tail switch, so that it can be controlled by pressing nearby while keeping the shooting position with both hands, or it can be directly integrated with the handguard and the front auxiliary grip. Many models can also be equipped with a special IR (infrared) filter cover, so that the emitted lighting cannot be detected by the naked eye, and only people wearing night vision goggles can use it.
The gun tactical flashlight mainly uses CR123A 3 volt lithium battery, and rechargeable 3 volt ICR123A, 3.7 volt 16340.18650 (double the length of CR123) battery. [2][3]. See also Streamlight and Surefire. Some military and police flashlights also make the front edge of the lamp cap into a crown shape, which can exert a striking effect similar to a finger tiger when personnel encounter a fight. It can also be used as an emergency Use of glass breaker. Most flashlights are designed to be cylindrical, but early flashlights are often designed in various styles, some look like early lanterns, and some look like candles. It is expected that more interesting styles will appear in the future. High-quality flashlights use special batteries, they can adjust the brightness, are waterproof, and can adjust the focus, but they are usually more expensive.
