(续上期)4.2环形荧光灯由于环形荧光灯采用“先涂粉,后弯管”的制造工艺,弯管过程中荧光粉承受高温灼烧,尤其是蓝粉热劣化特性较差,导致灯管出现色温变化大、光衰大等问题,尤其是弯管处出现黄色斑点(即弯管发黄问题)。经过我们反复验证,导致弯管发黄主要是由于蓝粉的问题。我们 (Continued) 4.2 Fluorescent Fluorescent Ring Fluorescent Lamps Because of the manufacturing process of “Flush first and then Bend tube”, the fluorescent powder is burned under high temperature during the bending process. In particular, the poor thermal deterioration characteristics of the blue powder lead to the appearance of color temperature Large changes, the light fades and other issues, especially the elbow appear yellow spots (that is, elbow yellow problem). After our repeated verification, resulting in bends yellow mainly due to blue powder problem. we