Detailed explanation of basic knowledge of household LED lighting
Source: Date:2022-04-14 16:21:02
LED lighting knowledge - basic knowledge
LED semiconductor light emitting devices include semiconductor light emitting diode (LED), digital tube, symbol tube, meter tube and dot matrix display screen (matrix tube). In fact, each light-emitting unit in digital tube, symbol tube, meter tube and matrix tube is a light-emitting diode.
Knowledge of LED lighting fixtures -- characteristics of LED light source
1. Low power consumption: LED with light efficiency of 75lm / W reduces power consumption by 80% compared with incandescent lamp with equal brightness;
2. Long service life: the service life of the product is up to 50000h, and the 24-hour continuous lighting can be used for 7 years;
3. Nanosecond response speed makes dynamic control of brightness and color easier, and can realize dynamic change and digital control of color;
4. Large design space: it can be organically integrated with the building to achieve the effect of seeing light but not light.
5. Environmental protection: no harmful metal mercury, no infrared and ultraviolet radiation.
6. Color: different wavelengths produce different color lights, which are bright and saturated. No filter is required. Different colors can be formed by controlling the three primary colors of red, green and blue, and various color effects such as full-color and gradation can be realized.
LED lighting knowledge - led characteristics:
LED lighting is a green light source: low working voltage and low power consumption; Stable performance, long service life (generally 100000 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 that it will inevitably replace the existing lighting devices.
Knowledge of LED lighting fixtures -- an important reference for selecting LED lamps
1. There should be no ultraviolet and infrared light in the spectral components. Too much ultraviolet radiation for a long time will not only cause keratitis, but also damage the lens, retina and choroid. Infrared rays are very easy to be absorbed by water. Too much infrared rays are absorbed when they pass through the lens of the human eye. Over time, the crystal will become denatured, leading to cataract.
2. The color temperature of light should be close to the natural light. People live under natural light for a long time. Human eyes have strong adaptability to natural light and good visual effect.
3. No electromagnetic radiation, eliminate radiation pollution and protect the brain. It can not only provide a comfortable lighting space, but also meet people's physiological and health needs. It is an environmental healthy light source. Long term use can protect vision and prevent myopia.
4. Zero stroboscopic, will not cause eye fatigue. The power supply frequency of ordinary fluorescent lamp is 50 Hz, which means that it is bright and dark 100 times per second when it emits light. It belongs to low-frequency stroboscopic light, which will make the regulating organs of the human eye in a tense regulating state and cause visual fatigue. If the frequency of light emission is increased to several hundred or tens of thousands of Hertz or above -- becoming a high frequency, the human eye will not have a stroboscopic feeling; But the true stroboscopic flicker is the light emitted by DC power supply or semiconductor solid-state light-emitting devices (such as LED), which is called stroboscopic flicker.
