After years of development and accumulation, LED lighting technology has entered a stage of rapid development. As an important part of the lighting industry, road lighting accounts for about 20% to 30% of the lighting power consumption in the whole country, and its status is very important. Therefore, the application of LED in road lighting has also received more and more attention. In order to seize business opportunities, many companies have seized more markets and are rushing to develop various road lamps to meet the needs of users. Even some enterprises that did not produce lighting products have also launched, but for various reasons, the current semiconductors have been created. The lighting products are in a chaotic situation, and some enterprise products have also entered a misunderstanding, which has brought about a great negative impact. The author combines the characteristics of his own enterprise and road lighting to elaborate on some problems encountered in the development and application of LED street lamps.
1, secondary optical design
At present, the high-power LED light effect for road lighting is basically 70-90Lm/W, which has a certain gap compared with the high-pressure sodium lamp (100-120Lm/W), but because the LED has directional light-emitting characteristics, the illumination angle is 120. Within the degree, through the rational design of the optical device, the gap between the two will be significantly reduced.
1.1 Lamp efficiency Generally, the efficiency of traditional high-pressure sodium lamp street lamps is about 75%, and with the directional illumination characteristics of LEDs, the efficiency of lamps can reach 79%;