Hot issues in road lighting: LED, promise solar lamp, metal halide lamp and the comparison of HPS

one Road lighting light source is the basic requirement of motor vehicles and non-motor vehicle lanes have different requirements. Two kinds of road visual task:

the classification of urban lighting

the road lighting light source lighting requirements: 1) Faithfully reflect the observed object in the scene, want to exaggerate, but do not reduce the difference; 2) To meet the requirements of the main body looking at;

economic requirements: 3) Long life, Droop and electrical accessories) ； 4) Economy ( Good cost performance) Good; 5) Maintenance ( Convenient maintenance) 。

specific demands ( The following DOE) Regulation: luminous flux: required luminous flux from lamps and lanterns: more than 2300 lm ∴ light flux left at least 4000 lm. Luminous efficiency: the higher the better. Color temperature: no rules. Color: no rules. Life: outdoor residential and commercial 35000 h.

list all of the following are satisfy the requirement of the current source is the comparison of highest level product

2. LED      1. Pay attention to the point - - - The difference of device & lamp 1) LED chip factory, optic and luminous efficiency indicators are in Tj, Junction temperature) = 25 ° C and pulse current ( 20 ms) ( The ∽ current 0) The data. Non-work state full text data

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