JPS5469736A - Emergency light - Google Patents

Emergency light

Info

Publication number
JPS5469736A
JPS5469736A JP13817377A JP13817377A JPS5469736A JP S5469736 A JPS5469736 A JP S5469736A JP 13817377 A JP13817377 A JP 13817377A JP 13817377 A JP13817377 A JP 13817377A JP S5469736 A JPS5469736 A JP S5469736A
Authority
JP
Japan
Prior art keywords
power source
commercial
source switch
impedance
lighting
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
JP13817377A
Other languages
Japanese (ja)
Inventor
Hiroyasu Takeuchi
Shozo Kataoka
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 JP13817377A priority Critical patent/JPS5469736A/en
Publication of JPS5469736A publication Critical patent/JPS5469736A/en
Pending legal-status Critical Current

Links

Landscapes

  • Audible And Visible Signals (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE: To make the commercial power source disconnectable without operating an energency lighting even under a condition with two-wire connection of wiring, by such means that with an impedance connected in parallel to a power source switch, the value of said impedance be set to a prescribed level.
CONSTITUTION: A power off detector circuit 5 and a commercial lighting circuit 4 are connected to the commercial power source through a power source switch 6, simultaneously with an impedance 7 connected in parallel to the power source switch. The value of said impedance will be set to a level in such manner that a lamp 2 be not lighted by the commercial lighting circuit at the time for the commercial power source 1 not being interrupted forther for the power source switch being opened. And the power off detector circuit is made operating a connection to a side of the commercial lighting circuit regardless of the state of on-off of the power source switch for the commercial power source if in a state of not interruption. In this way, with the power source switch made open, the lamp can be extinguished without being made an emergency lighting, eliminating a requirement of three- wire connection of wiring processed for extinguishing the commercial lighting in such manner as made in the past.
COPYRIGHT: (C)1979,JPO&Japio
JP13817377A 1977-11-15 1977-11-15 Emergency light Pending JPS5469736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13817377A JPS5469736A (en) 1977-11-15 1977-11-15 Emergency light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13817377A JPS5469736A (en) 1977-11-15 1977-11-15 Emergency light

Publications (1)

Publication Number Publication Date
JPS5469736A true JPS5469736A (en) 1979-06-05

Family

ID=15215736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13817377A Pending JPS5469736A (en) 1977-11-15 1977-11-15 Emergency light

Country Status (1)

Country Link
JP (1) JPS5469736A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014061214A1 (en) 2012-10-18 2014-04-24 株式会社アドバンスクリエート Power failure detection method, power failure detector, lighting device, and power supply device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014061214A1 (en) 2012-10-18 2014-04-24 株式会社アドバンスクリエート Power failure detection method, power failure detector, lighting device, and power supply device

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