Sanyo Electric Co., Ltd.

Prodex Co. Ltd.

Shigeo Matsuzawa

Tetsuya Oketani

Mitsuru Kakinuma

An object is to provide a showcase in which terminals of an illuminative lamp can electrically be connected to power supply portions of sockets securely and safely and in which an attaching operation of the illuminative lamp can be simplified; the showcase is provided with the sockets each including a main body side socket member which connect the illuminative lamp to a power source of a main body and an illuminative lamp side socket member; the main body side socket member includes a connecting section in which a power supply contact piece is stored; the illuminative lamp side socket member includes an attachment section to be attached to an end portion of the illuminative lamp, and a storage section; the terminal is opposed to the inside of the storage section in a state in which the attachment section is attached to the end portion of the illuminative lamp; and the terminal is electrically connected to the power supply contact piece, and the power supply contact piece is urged toward the terminal by a pressing portion formed at the storage section in a state in which the connecting section is stored in the storage section.

Low temperature showcase with illuminative lamp

A power source connection device capable of avoiding dropping of a power source plug from a power source socket owing to frost on the power source socket, that has a power source socket attached to a partition plate which separates a showroom of a low-temperature showcase from a cold-air duct; and a power source plug connected to the power source socket, the power source socket has a vessel-like attachment base and an electrode portion formed protruding spaced from an inner portion of an outer peripheral wall constituting the attachment base, the power source plug has a terminal for electrically connecting the power source to the electrode portion and a peripheral wall portion enclosing the terminal, and the power source plug is detachably engaged with the power source socket such that the terminal is connected to the electrode portion of the power source socket.

Power source connection device and low-temperature showcase including the same

A control apparatus for a fluorescent lamp for detecting an end-of-life state of a fluorescent lamp for making it possible to take suitable countermeasures. In the control apparatus, a load circuit is formed of a capacitor connected between filaments of a fluorescent lamp and a choke coil connected in series with the filament, and there are provided a detection coil for detecting a tube current flowing through the load circuit and a detection circuit receiving an output voltage of a rectifier circuit rectifying the output of the detection coil for detecting a rise in the output voltage occurring when the output frequency of an oscillation circuit is modulated by a modulation circuit.

Growing community of inventors

Gunma-ken, Japan

Shigeo Matsuzawa