公开(公告)号：US3716743A

公开(公告)日：1973-02-13

申请号：US3716743D

申请日：1970-08-28

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： MIZUNO H ,  KIMURA S ,  AKUTSU H ,  WATARAI Y ,  BABA S ,  YAMAZAKI H ,  OKAMOTO T

IPC: H01J61/04 ,  H01J17/16

CPC classification number: H01J61/045

Abstract: In a discharge tube of saturated metal vapor pressure type containing high-pressure gaseous or vaporized metals, the temperature of the coolest points existing at both ends of the discharge tube can be raised by forming a layer or layers of a metal or metals of high melting point, low vapor pressure and good thermal conductivity, such as niobium, on the outer wall at the ends of the discharge tube; thereby, providing better radiant emission, especially higher color temperature and an improved color rendering property compared with conventional high-pressure metal-vapor discharge tubes. The discharge tube of the abovementioned construction can be manufactured easily and has a longer life under burning conditions corresponding to those for conventional type high-pressure metal-vapor discharge tubes.

Abstract translation: 在含有高压气态或汽化金属的饱和金属蒸气压放电管中，放电管两端存在的最冷点的温度可以通过形成一层或多层金属或高熔点金属来提高 点，低蒸气压和良好的导热性，如铌，放电管末端的外壁; 从而与传统的高压金属蒸汽放电管相比，提供更好的辐射发射，特别是更高的色温和更好的显色性能。 上述结构的放电管可以容易地制造并且在与常规型高压金属蒸汽放电管相对应的燃烧条件下具有更长的寿命。