How led lighting fixtures identify their quality
2018-05-07 Common Problem

      LED lighting quality mainly depends on several parameters:

      1, light failure, better LED lamps light decay before 25000 hours <30%; determine the main factor of light failure is the quality of the light source, the difference in heat dissipation structure; foreign manufacturers of high power light source package, such as CREE light source Light attenuation is better than the domestic packaged light source, as the layman generally do not see the light source, a simple way to judge is mainly the price, foreign original packaged light source is much higher than the price of the domestic packaged light source; so to buy better quality LED Lamps must provide light source manufacturer information.

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      2, light efficiency, that is, the number of lumens per watt, unit LM / W, he is reflecting the power saving performance of lamps, the better the power-saving lighting, the higher the luminous efficiency. At present, the luminous efficiency of LED and the efficiency of compact fluorescent lamps are almost the same. With the improvement of LED luminous efficiency, CREE may produce 186lm/w light source this year.

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      3, light source, high power LED or straw hat or piranha-type LED; LED lighting using high-power LED as a light source, the price is higher; and straw hat lights or piranha-type LED prices are very cheap, not suitable for lighting Grade light fixtures.

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      4, drive power, good drive power can ensure the overall lamp life, LED theoretical life is 100,000 hours and the general drive power supply life is less than 100,000 hours; in order to ensure the overall lamp life, drive power is also a key link; On the one hand, the LED must be driven by a constant current. If low-cost constant-voltage driving is used, the service life of the LED will be shortened. How do ordinary consumers identify the driving power of LEDs? Look at several parameters, light decay, lifetime, light efficiency, and warranty period. Manufacturers of LED lamps that dare to provide long-term warranty are of better quality. Off-the-shelf high-power DC-DC DC converter, DC booster, 36V/48V/60V electric vehicle inverter, electric vehicle intelligent DC converter.

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