JPS643997A - Discharge lamp lighting device - Google Patents

Discharge lamp lighting device

Info

Publication number
JPS643997A
JPS643997A JP15906187A JP15906187A JPS643997A JP S643997 A JPS643997 A JP S643997A JP 15906187 A JP15906187 A JP 15906187A JP 15906187 A JP15906187 A JP 15906187A JP S643997 A JPS643997 A JP S643997A
Authority
JP
Japan
Prior art keywords
exactly
main heater
discharge lamp
closed state
bimetal switch
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.)
Granted
Application number
JP15906187A
Other languages
Japanese (ja)
Other versions
JPH0636397B2 (en
Inventor
Masazumi Takakura
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP62159061A priority Critical patent/JPH0636397B2/en
Publication of JPS643997A publication Critical patent/JPS643997A/en
Publication of JPH0636397B2 publication Critical patent/JPH0636397B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

PURPOSE:To exactly prevent excessive wear and transition of a bimetal contact by connecting a shunting means such as a shunt resistor, which is used to shunt a heating current flowing in a main heater, in parallel with the main heater and next disposing a protection means in which a starting bimetal switch is held on a closed state. CONSTITUTION:A shunting means R3 such as a shunt resistor, which is used to shunt a current flowing a main heater H1 and to decrease it according as a surface temperature and a resistance value rise due to heat generation of a positive characteristic heat sensitive element PTC during a life time of a discharge lamp, is connected in parallel with the main heater H1 and next a starting bimetal switch SW1 is exactly held on a closed state. Repeated on- and-off operations of the starting bimetal switch SW1, occurring during the life time of the discharge lamp, can be exactly stopped by maintaining this closed state. Hence, excessive wear and transition of the bimetal contact can be exactly prevented, and so the starting bimetal switch SW1 can be made long-lived without much increase in the number of parts and in cost, and further a degree of freedom on designing a circuit can be improved.
JP62159061A 1987-06-25 1987-06-25 Discharge lamp lighting device Expired - Lifetime JPH0636397B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62159061A JPH0636397B2 (en) 1987-06-25 1987-06-25 Discharge lamp lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62159061A JPH0636397B2 (en) 1987-06-25 1987-06-25 Discharge lamp lighting device

Publications (2)

Publication Number Publication Date
JPS643997A true JPS643997A (en) 1989-01-09
JPH0636397B2 JPH0636397B2 (en) 1994-05-11

Family

ID=15685363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62159061A Expired - Lifetime JPH0636397B2 (en) 1987-06-25 1987-06-25 Discharge lamp lighting device

Country Status (1)

Country Link
JP (1) JPH0636397B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0481906A (en) * 1990-07-24 1992-03-16 Yotaro Hatamura Structure attitude controller
US10572963B1 (en) 2017-07-14 2020-02-25 Synapse Technology Corporation Detection of items
CN113677051A (en) * 2020-05-14 2021-11-19 赫姆斯多夫埃贝赫卡滕有限两合公司 PTC heating unit and method for manufacturing same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916296A (en) * 1982-06-29 1984-01-27 松下電工株式会社 Device for starting discharge lamp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916296A (en) * 1982-06-29 1984-01-27 松下電工株式会社 Device for starting discharge lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0481906A (en) * 1990-07-24 1992-03-16 Yotaro Hatamura Structure attitude controller
US10572963B1 (en) 2017-07-14 2020-02-25 Synapse Technology Corporation Detection of items
US11276213B2 (en) 2017-07-14 2022-03-15 Rapiscan Laboratories, Inc. Neural network based detection of items of interest and intelligent generation of visualizations thereof
CN113677051A (en) * 2020-05-14 2021-11-19 赫姆斯多夫埃贝赫卡滕有限两合公司 PTC heating unit and method for manufacturing same

Also Published As

Publication number Publication date
JPH0636397B2 (en) 1994-05-11

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