| 摘要 |
PROBLEM TO BE SOLVED: To reduce temperature rising of the constituting component of a high frequency inverter. SOLUTION: A dish-like metal upper cover 2 and a metal lower cover 3 having smaller diameter than a chassis 1 are fixed to the upper and lower surfaces of the chassis 1, a main body 4 having a space substantially separated up and down on opposite sides of the chassis 1 is constituted, a high frequency inverter 5 is housed between the chassis 1 and the lower cover 3, a fluorescent lamp 7 lit with the high frequency inverter 5 is installed on the lower surface of the lower cover 3, and a glove 8 covering the fluorescent lamp 7 is fixed to the lower surface of the chassis 1. |
