INTERNALLY ILLUMINATED SEPTIC TANK

摘要

PROBLEM TO BE SOLVED: To make work easier when carrying out the work for inspection and maintenance of the inside of a septic tank. SOLUTION: LEDs 26 are installed to the septic tanks 10 as illumination lights to illuminate the inside of the tank. The LEDs 26 are installed to the inside surface of a manhole cap 24 or the inside surface of a ceiling section 14 around the manhole 22. The LEDs are otherwise installed to the inside surface of a bottom 16, the inside surface of a peripheral wall 12, etc.