一、前言以前,一般的矿用防爆型灯具,因使用在井下恶劣的环境中,特别是由于在制造上以防护外部冲击之类的机械性损伤为重点,因而体积大而重,光源发出的光也因透光部狭窄而影响照明效果,加之仅限于煤矿需要,所以有成本高的缺点。近几年来,在国际性的改善井下照明的潮流中,各国对这些 First, the preface Previously, the general mine explosion-proof lamps, due to the use in the harsh underground environment, especially due to the manufacture of protection against external shocks such as mechanical damage as the focus, so bulky and heavy, issued by the light source Light is also due to narrow transmission and lighting effects, coupled with limited to the needs of coal mines, so there is a cost disadvantage. In recent years, in the international trend of improving downhole lighting, all these have been done by various countries