LED灯丝灯漏气的在线检测技术

The Online Test Technology for the Leak of LED Filament Lamps

近年来LED灯丝灯的增长非常迅速,据有关媒体报道,国内目前生产LED灯丝灯的相关企业已近800家,虽然进入门槛不高,但要做出高品质却是不容易的,其中LED灯丝灯的漏气问题是困扰广大生产制造企业的一大难题。本文从LED灯丝灯的特性出发,深入分析了LED灯丝和灯泡的光色输出对温度的依赖性,研究了能够快速甄别灯泡是否漏气的关键指标,并提出使用加速老化和在线光色电测量一体化的检测系统对LED灯丝灯漏气现象进行在线检测的技术方案,该技术能够发现LED灯丝灯的漏气问题,剔除不合格产品,从而大幅度提高产品的良品率,保证产品质量。此外,通过对国际标准的跟踪研究发现,近年来IEC标准在逐步强调对LED产品的在线光色测量要求,当LED产品与同批次产品出现较大偏差时,就应当即时剔除,不仅仅因为其光色性能不合格,还可能存在安全隐患。

LED filament lamps have got rapid development in recent years. According to the media reports, the number of related manufacturers is up to 800. However, an important problem facing to the manufacturers is how to detect and control the leak of LED lamp. In this paper, the relationship among photometric and colorimetrie performance of LED filament lamp and temperature and leak is studied. And based on this, a rapid detection method for LED lamp leak and related online test equipment are proposed, through which tile leak of lamp can be recognized and eliminated timely. Finally, the latest progress of international standard has been researched and it shows more and more attention has been paid to the online test of LED products. And if the luminous flux of individual LED product is far below of the same batch product, it means not only a performance deficiency, but a security risk.