Writer：Jane Time：2021-06-30 Browse：168
LED lighting change lamp pay attention to choose and buy. At present, the LED industry has entered a period of deep integration with the official implementation of relevant government support policies. As well as the growing maturity of ED technology, the output value of LED lighting industry will usher in explosive growth in the future. The penetration rate of LED in the global market is increasing rapidly. The global wave of replacement of LED lighting products is caused by the rapid decline in prices, among which the replacement light source products are the most obvious. Blobs and tubes are the most popular alternative light source types in the market. The demand for integrated LED lighting products will gradually rise in the future, especially the products combined with intelligent lighting applications. However, despite the rapid growth of LED lighting, but due to the lack of LED technical standards, overcapacity, vicious competition among enterprises, many LED lighting products appear unqualified results, but also let consumers talk about LED lights on the color change. So, what do consumers need to pay attention to in the specific link of purchase? First, the expectation of the actual service life is too high. LED manufacturers expect LED life to reach 10o OO hours MWTRF (average trouble-free time, the standard for the life of Zori light sources used by traditional light manufacturers). · However, like all basic light sources, the lumens in the optical pass of LEDs decay with time. So, while LEO glow time can be very long, MTEF is not the only consideration for determining service life. LED lumen attenuation is affected by many environmental conditions such as ambient temperature, humidity and ventilation. Lumen attenuation is also influenced by control, thermal management, current levels, and many other electrical design considerations. Many salesmen may provide some vague information to customers when promoting LED lighting for some reason, causing misleading, for example, the service life of LED is about 100,000 hours, where 100,000 hours refers to the expected service life of LED lighting by the manufacturer. But as the light source of illumination, the brightness of the lamp has a process of gradual attenuation and darkening (such as fluorescent lamp, energy-saving lamp), this process is referred to as light decline. Therefore, consumers should pay attention to the speed of light decay, rather than the use time, when purchasing EDB. Consumers must not expect too much of the actual service life. Second, take the actual luminous Angle as the effective Angle. The luminous Angle of LED lighting is divided into effective Angle and actual luminous Angle. The Angle between the direction where the luminescent intensity value is half of the axial intensity value and the luminescent axis (normal direction) is the effective Angle. Z times the half-value Angle is the Angle of view (or half-power Angle), which is the actual luminous Angle. Angles beyond half of the axial intensity are not counted as effective angles in practice because the light is too weak. Therefore, consumers should pay attention to the actual luminous Angle of the product when buying the product. When calculating the number of products used in the project, the actual luminous Angle shall prevail, and the effective luminous Angle can only be used as a reference value. Three, the greater the power, the higher the brightness. The brightness of LED lighting is measured by its luminous intensity. The luminous intensity refers to the luminous intensity on the axis of the cylindrical light-emitting tube with normal R, that is, the light channel emitted by unit solid Angle, and the unit is Candela CD. O Because the luminous intensity of general LED is small, the luminous intensity is usually used as the unit of RnCD. In general, a light source emits light in different directions and at different intensities. The radiation intensity of visible light emitted by a unit solid Angle in a specific direction is called light intensity, or axial brightness.
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