| 摘要 |
PURPOSE:To effectively control ON, OFF of a lamp in a storage box by providing a collar magnet for opening/closing a contact piece of a reed switch by a door opening/closing unit in a socket. CONSTITUTION:Since a magnet 15 is disposed at a lowermost part in a vessel 17 in a state that a heat insulating door 6 is closed and separated from a reed switch 14, power is not supplied to a lamp 11 in a storage box, and the lamp is OFF. When the door 6 is opened and a door opening angle delta becomes an inclining angle theta or more, the vessel 17 is inclined at the theta or more, the switch on the inner surface 18 of the vessel becomes lower than a horizontal state, the magnet 15 is turned to its left side to the vicinity of the switch 14 so that most of lines of magnetic force pass in parallel with a movable contact piece 16B. Accordingly, the piece 16B is brought into contact with a stationary contact piece 16A, power is supplied to light the lamp 11. If the door 6 is returned to a closing direction from this state and the angle delta becomes less than the angle theta of the surface 18, the magnet 15 is turned to the right side, moved to a separate position, and the lamp 11 is turned OFF. |
