Okaya Electric Industries, Co., Ltd.

Okaya Electric Industrial Co., Ltd.

Seiichiro Oda

Junichi Ida

Satoshi Watanabe

Yoshito Kasai

Mitsuhisa Shimada

Akio Mukai

A discharge-type surge absorbing element that absorbs a surge by using the discharge that occurs between a discharge interval arranged within a sealed container filled with a discharge gas. The discharge-type absorbing element is characterized by a plurality of discharge electrodes connected to lead wires and disposed within a sealed container filled with a discharge gas. The discharge electrodes are disposed within the container so that they face each other and so that a discharge gap is formed between the discharge electrodes. The lead wire from each of the discharge electrodes passes through the sealed container and extends externally. A layer is disposed on the inside surface of the sealed container, at least between the lead wires. The layer has good creeping discharge properties and is made from the material in the discharge electrodes. A very small gap is formed between the lead wires and the end of the layer.

Discharge type surge absorbing element and method for making the same

A first display discharge lamp has a transparent airtight container filled with a discharge gas; a positive electrode disposed in the airtight container and supported by a stem having an air tube therein; a negative electrode of an inverted configuration disposed in the transparent airtight container and surrounded by the positive electrode; a lead member integrally formed with the positive electrode, having a bent portion between a lower end of the negative electrode and the stem; and an insulating member disposed between the lower end of the negative electrode and the bent portion of the lead member. According to a second display discharge lamp, both a negative electrode and a positive electrode are of an inverted conical configuration. The former has at least an open upper end, while the latter has an open upper end and an open lower end. A lower end of the positive electrode is inserted in an interior of the negative electrode from the open upper end of the negative electrode. And, a lower/outer periphery of the positive electrode is, in a non-contact condition, opposed to an upper/inner periphery of the negative electrode.

Display discharge lamp

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Gyouda, Japan

Seiichiro Oda