JPS6443999A - Fluorescent lamp unit - Google Patents

Fluorescent lamp unit

Info

Publication number
JPS6443999A
JPS6443999A JP19908187A JP19908187A JPS6443999A JP S6443999 A JPS6443999 A JP S6443999A JP 19908187 A JP19908187 A JP 19908187A JP 19908187 A JP19908187 A JP 19908187A JP S6443999 A JPS6443999 A JP S6443999A
Authority
JP
Japan
Prior art keywords
fluorescent lamp
lead wires
electrode
cathode
cathode spot
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
JP19908187A
Other languages
Japanese (ja)
Inventor
Kunio Yuasa
Nobuhiko Hayashi
Atsushi Saida
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP19908187A priority Critical patent/JPS6443999A/en
Publication of JPS6443999A publication Critical patent/JPS6443999A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To prevent an irregular movement of the cathode spot and to eliminate an early burn-out or early blackening resulting form the irregular movement of the cathode spot by placing a bypass circuit including an impedance between lead wires or between the wires connected to the lead wires. CONSTITUTION:In a fluorescent lamp unit using a small size fluorescent lamp with a lamp current less than 100mA, a bypass circuit 6 including an impedance is inserted between a pair of lead wires 54 and 55 which are led from an electrode 56, or between wires connected to the lead wires 54 and 55. As a result, the heating at the electrode parts other than the cathode spot is suppressed, the spot position is stabilized, the cathode spot moves from one end to the other end of the filament electrode gradually in order with the passage of the lighting time, and consequently, the electrode never transfers to the unheating electron emission until the majority of the cathode substance is consumed, resulting in a long service life of the fluorescent lamp.
JP19908187A 1987-08-11 1987-08-11 Fluorescent lamp unit Pending JPS6443999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19908187A JPS6443999A (en) 1987-08-11 1987-08-11 Fluorescent lamp unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19908187A JPS6443999A (en) 1987-08-11 1987-08-11 Fluorescent lamp unit

Publications (1)

Publication Number Publication Date
JPS6443999A true JPS6443999A (en) 1989-02-16

Family

ID=16401789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19908187A Pending JPS6443999A (en) 1987-08-11 1987-08-11 Fluorescent lamp unit

Country Status (1)

Country Link
JP (1) JPS6443999A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145427A (en) * 1990-03-06 1992-09-08 Sanshin Kogyo Kabushiki Kaisha Steering mechanism for outboard motor
US7081709B2 (en) * 2001-11-02 2006-07-25 Ampr, Llc Method and apparatus for lighting a discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145427A (en) * 1990-03-06 1992-09-08 Sanshin Kogyo Kabushiki Kaisha Steering mechanism for outboard motor
US7081709B2 (en) * 2001-11-02 2006-07-25 Ampr, Llc Method and apparatus for lighting a discharge lamp

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