vacuum fluorescent tube
A display component used in older electronics such as VCRs, audio equipment, and calculators. Technical term.
See also: 蛍光管
This old VCR uses a vacuum fluorescent tube.
蛍光管 is a broader term for fluorescent tube, while 真空蛍光管 specifically refers to a vacuum fluorescent tube used in displays.
Compound of 真空 (vacuum) + 蛍光 (fluorescence) + 管 (tube).