JPS6463257A - Discharge lamp device - Google Patents

Discharge lamp device

Info

Publication number
JPS6463257A
JPS6463257A JP22094987A JP22094987A JPS6463257A JP S6463257 A JPS6463257 A JP S6463257A JP 22094987 A JP22094987 A JP 22094987A JP 22094987 A JP22094987 A JP 22094987A JP S6463257 A JPS6463257 A JP S6463257A
Authority
JP
Japan
Prior art keywords
tube body
semiconductor ceramic
discharge lamp
electrode
cathode electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22094987A
Other languages
Japanese (ja)
Inventor
Munemitsu Hamada
Hitoshi Masumura
Shoichi Iwatani
Haruo Taguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Priority to JP22094987A priority Critical patent/JPS6463257A/en
Publication of JPS6463257A publication Critical patent/JPS6463257A/en
Pending legal-status Critical Current

Links

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To prevent the blackening phenomenon of a light emitting tube from occurring without entailing any chemical change due to heating as well as to aim at the promotion of long service life in a discharge lamp device by constituting it from a discharge lamp tube body, an electrode formed by a semiconductor ceramic to be set up in this discharge lamp tube body and a base part formed by an insulator ceramic sealing and supporting this electrode inside the said tube body. CONSTITUTION:An electrode part consists of a tube body 1 for a discharge lamp, a cathode electrode 2 using a semiconductor ceramic to be set up in this tube body 1 and a base part 3 formed by an insulator ceramic sealing and supporting this cathode electrode 2 in the inner part of the tube body 1, while the cathode electrode 2 consists of a discharge part 2a projected to the inside of the tube body 1 and an outer end 2b projected to the outside of the tube body 1, and current-energization is carried out by connecting a lead wire 4 connected to this outer end 2b to a power source (unillustrated herein). As for this semiconductor ceramic, a valence compensation type semiconductor ceramic is enumerable, by way of example. A typical example of this valence compensation type semiconductor ceramic is such one that used a barium titanate system. Since the cathode electrode 2 is formed with the semiconductor ceramic as above-mentioned, any chemical change due to heating is in no case produced there and a light emitting tube is prevented from blackening, thus the promotion of long service life can be realized.
JP22094987A 1987-09-02 1987-09-02 Discharge lamp device Pending JPS6463257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22094987A JPS6463257A (en) 1987-09-02 1987-09-02 Discharge lamp device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22094987A JPS6463257A (en) 1987-09-02 1987-09-02 Discharge lamp device

Publications (1)

Publication Number Publication Date
JPS6463257A true JPS6463257A (en) 1989-03-09

Family

ID=16759077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22094987A Pending JPS6463257A (en) 1987-09-02 1987-09-02 Discharge lamp device

Country Status (1)

Country Link
JP (1) JPS6463257A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0425150U (en) * 1990-06-22 1992-02-28
FR2783092A1 (en) * 1998-09-07 2000-03-10 Aupem Sefli Terminal element, for a luminescent or fluorescent tube used especially in illuminated signs, comprises an external metal electrode with an end portion inserted in a glass tip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0425150U (en) * 1990-06-22 1992-02-28
FR2783092A1 (en) * 1998-09-07 2000-03-10 Aupem Sefli Terminal element, for a luminescent or fluorescent tube used especially in illuminated signs, comprises an external metal electrode with an end portion inserted in a glass tip

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