| 摘要 |
PURPOSE:To permit visual checking of the presence or absence of the oscillation of microwaves with ease by installing a fluorescent tube in the electric field effect by microwaves and making the fluorescent tube which emits light by receiving the electric field effect checkable from the outside. CONSTITUTION:A fluorescent tube 38 is installed on the rear surface of a cover 15a of a fixing device, and the tube 38 is disposed in the electric field slightly apart from the strong electric field of microwaves but in the field strength sufficient to emit fluorescence. The user is able to check the oscillation of microwaves by viewing the fluorescence emitting to the outside through the window 39 opened to the cover 15a. Since a net 40 for preventing the leakage of microwaves is extended in the window 39, the device is safe. |
