LED advantages and disadvantages:
LED advantages
Small sizeLED is basically a very small wafer encapsulated inside an epoxy resin, so it's very small and very light.
Low Power ConsumptionLED power consumption is quite low, DC drive, ultra-low power consumption (0.03-0.06 watts for a single tube), electro-optical power conversion close to 30%. Generally speaking, the working voltage of LED is 2-3.6V, the working current is 0.02-0.03A; that is to say, it consumes no more than 0.1W of electricity, the same lighting effect than the traditional light source energy saving nearly 80%.
Long lifeSome people call LED light source for long life lamp. It is a solid cold light source, epoxy resin encapsulation, there is no loose part of the lamp body, there is no filament luminescence easy to burn, heat deposition, light attenuation and other shortcomings, in the appropriate current and voltage, the service life of up to 60,000 to 100,000 hours, longer than the life of traditional light sources more than 10 times.
High brightness, low heatLEDs use cold light-emitting technology, the heat generated is much lower than ordinary lighting.
Eco-friendlyLEDs are made of non-toxic materials, unlike fluorescent lamps which contain mercury that causes pollution, and LEDs can be recycled. There are no ultraviolet and infrared rays in the spectrum, neither heat nor radiation, little glare, cold light source, safe to touch, belonging to the typical green lighting source
Robustness and durabilityLEDs are completely encapsulated in epoxy resin, which is more robust than light bulbs and fluorescent tubes. There are also no loose parts inside the lamp, making the LEDs less likely to be damaged.
Multi-variableLED light source can use red, green, blue three-color principle, under the control of computer technology so that the three colors have 256 levels of gray scale and arbitrary mixing, you can produce 256 × 256 × 256 = 16777216 kinds of colors, the formation of different combinations of light color changeable, to achieve colorful and dynamic changes in the effect of a variety of images.
Advanced technologyCompared with the monotonous luminous effect of the traditional light source, the LED light source is a low-voltage microelectronic products. It successfully integrated computer technology, network communication technology, image processing technology, embedded control technology, so it is also a digital information technology products, semiconductor optoelectronic devices, "high-tech" technology, with online programming, unlimited upgrades, flexible and versatile features.
LED Disadvantages
Toxic element contentLED lights contain antimony, arsenic, chromium, lead, and many other metal elements. Some of these LED lights have toxic element levels that exceed the standards set by regulators. For example, in low-brightness red LED lights, researchers found that their lead content exceeded the standard by up to eight times, and nickel content also exceeded the standard by 2.5 times.
In fact, in California law, the vast majority of LED lights have been clearly defined as toxic waste, which can contaminate soil and groundwater if disposed of in landfills. If the LED light is broken, it may also cause damage to human health in direct contact with the LEDs, where arsenic, lead, nickel and copper elements have the most serious impact on humans and the environment.
Luminous surface is relatively narrowLED needs due to the individual luminous surface is relatively narrow, usually large-scale integration in the circuit board, to form a relatively large light source, which will result in the accumulation of a lot of heat, and sometimes will break through the circuit board. So the heat dissipation of LED lights must be good.
Harmful to the eyesThe most unacceptable to the human eye is blue light and UV light (i.e., ultraviolet light), the ability of blue light to kill the active cells of the human eye is 10 times as much as green light, while the ability of UV light to kill the active cells of the human eye is 10 times as much as blue light, long-term exposure to a large number of low-wavelength blue light can be a large number of killing the active cells of the human eye, and ultimately cancerous plaque formation. LED white light formation is mainly by 450-455NM wavelength blue light excitation phosphor, which the lower the wavelength the stronger the ability to strike, usually the wavelength of the LED factory control within 500NM, i.e., 450-455NM, or 455-460NM, belongs to the strongest damage to the band, if the wavelength becomes bigger, then the ability to excitation of the phosphor decreases, the efficiency is reduced. People in pursuit of brightness, usually more will strengthen the blue light intensity of the LED, the longer the lighting time, the faster the phosphor attenuation, which in turn leads to the human eye exposure to the blue light band of the light is more intense, thus causing damage to the human eye.
So LED lamps in road traffic LED navigation instructions, LED street lamps, LED desk lamps on the use of certain disadvantages, easy to make people in the use of the process of dizziness, dizziness, uncomfortable feeling, and even long-term use of the eyes will turn into eye injuries, so that the chances of suffering from eye diseases will be increased.