信号灯泡存在的问题及改进信号灯泡是与运输安全密不可分的重要器材。但目前运用中的灯泡存在着一系列问题。为此，进行了研究改进。１存在的问题从使用情况看，灯泡质量问题可分为２类。一是使用寿命短，表现为主丝断丝、外壳变黑等，从而使信号显示距离降低。二是入所检... Problems with signal light bulbs and their improvement Signal bulbs are important equipment that is inseparable from transport safety. However, there are a series of problems in the light bulb currently in use. To this end, conducted research improvements. 1 problems From the use of the situation, the lamp quality problems can be divided into two categories. First, the service life is short, the performance of the main wire broken silk, shell black, so that the signal display distance decreased. Second, into the seized ...