真空蛍光管 しんくうけいこうかん Meanings Noun vacuum fluorescent tube See also: 蛍光管 (けいこうかん). Kanji 真 true. Read as シン. 空 sky. Read as クウ. 蛍 firefly. Read as ケイ. 光 light. Read as コウ. 管 administer. Read as カン. Jinuma: Japanese Dictionary · Word lists