Detailed explanation of basic knowledge of household led lighting
LED lighting knowledge-basic knowledge
LED semiconductor light-emitting devices include semiconductor light-emitting diodes (referred to as LED), nixie tubes, symbol tubes, rice-shaped tubes and dot matrix display screens (referred to as matrix tubes), etc. In fact, each light-emitting unit in the nixie tube, symbol tube, podium tube, and matrix tube is a light-emitting diode.
Knowledge of led lighting lamps-the characteristics of led light sources
1. Less power consumption: The power consumption of an LED with a luminous efficiency of 75Lm/W is 80% less than that of an incandescent lamp with the same brightness;
2. Long life: The product life is as long as 50000h, and it can be used for 7 years when it is continuously lit for 24 hours;
3. Nanosecond response speed makes dynamic control of brightness and color easier, and can realize dynamic color change and digital control;
4. Large design space: It can be organically integrated with the building to achieve the effect of seeing only the light but not the light.
5. Environmental protection: no harmful metal mercury, no infrared and ultraviolet radiation.
6. Color: Different wavelengths produce different colored lights, bright and saturated, no filter is required, and can be controlled by the three primary colors of red, green and blue to form different colors, and can achieve various color effects such as full color and gradient.
Knowledge of led lighting fixtures-led features:
LED lighting is a green light source: low working voltage, low power consumption; stable performance, long life (usually 100,000 hours), short response time, and no pollution to the environment. Although the price is more expensive than the existing lighting equipment, it is still considered to inevitably replace the existing lighting equipment.
Knowledge of led lighting-an important reference for selecting led lights
1. There should be no ultraviolet light and infrared light in the spectral composition. Long-term excessive exposure to ultraviolet rays will not only cause keratitis, but also damage the lens, retina, and choroid. Infrared rays are easily absorbed by water. Excessive infrared rays are absorbed when they pass through the lens of the human eye. The lens will degenerate over time, leading to cataracts.
2. The color temperature of light should be close to natural light. People live under natural light for a long time, and human eyes are highly adaptable to natural light and have good visual effects.
3. No electromagnetic radiation, prevent radiation pollution and protect the brain. It can not only provide a comfortable light space, but also meet people's physiological health needs. It is an environmentally friendly and healthy light source. Long-term use can protect eyesight and prevent myopia.
4. Zero stroboscopic, will not cause eye fatigue. The power supply frequency of an ordinary fluorescent lamp is 50 Hz, which means that it is bright and dark 100 times per second when it emits light. It is a low-frequency stroboscopic light that will make the regulating organs of the human eye in a tight adjustment state, leading to visual fatigue. If the frequency of light emission is increased to hundreds or tens of thousands of Hz or more --- become high frequency, the human eye will not have the feeling of flicker; but the real flicker-free is DC power supply or semiconductor solid light-emitting devices (such as LED light-emitting diodes). ) The light emitted is called non-stroboscopic flash.
