GB1535216A - Emergency lighting assemblies - Google Patents

Emergency lighting assemblies

Info

Publication number
GB1535216A
GB1535216A GB4959175A GB4959175A GB1535216A GB 1535216 A GB1535216 A GB 1535216A GB 4959175 A GB4959175 A GB 4959175A GB 4959175 A GB4959175 A GB 4959175A GB 1535216 A GB1535216 A GB 1535216A
Authority
GB
United Kingdom
Prior art keywords
lamp
mains supply
battery
illuminated
light emitting
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.)
Expired
Application number
GB4959175A
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.)
SOUND DIFFUSION Ltd
Original Assignee
SOUND DIFFUSION 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 SOUND DIFFUSION Ltd filed Critical SOUND DIFFUSION Ltd
Priority to GB4959175A priority Critical patent/GB1535216A/en
Publication of GB1535216A publication Critical patent/GB1535216A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1535216 Lamp testing SOUND DIFFUSION (Mfg) Ltd 3 Dec 1975 49591/75 Heading G1U [Also in Division H2] An emergency lighting assembly comprises a translucent housing of non-magnetic material containing an emergency lamp LP1, a storage battery charged by a mains supply, a light emitting diode LP2 for indicating normal operating conditions, and a test device including a normally closed reed switch RS-1 which is opened by placing a magnet on the housing thereby disconnecting the mains supply to enable the effectiveness of the lamp to be checked. When the mains supply is present, the battery is charged via a transformer T1 and diodes D1, D3. Transistors Q1, Q2 are maintained non-conductive so that the lamp LP1 is off but the light emitting diode is illuminated. If the mains fails, the transistors conduct and the lamp LP1 is illuminated by the battery, the light emitting diode being extinguished. To test the lamp LP1, a magnet is placed adjacent the reed switch RS-1 which opens to disconnect the mains supply and connect the lamp LP1 to the battery. The circuit may be constructed so that the lamp LP1 is also illuminated when the mains supply is present.
GB4959175A 1975-12-03 1975-12-03 Emergency lighting assemblies Expired GB1535216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4959175A GB1535216A (en) 1975-12-03 1975-12-03 Emergency lighting assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4959175A GB1535216A (en) 1975-12-03 1975-12-03 Emergency lighting assemblies

Publications (1)

Publication Number Publication Date
GB1535216A true GB1535216A (en) 1978-12-13

Family

ID=10452876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4959175A Expired GB1535216A (en) 1975-12-03 1975-12-03 Emergency lighting assemblies

Country Status (1)

Country Link
GB (1) GB1535216A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447556A1 (en) * 1979-01-27 1980-08-22 Bosch Gmbh Robert DEVICE FOR INDICATING FAILURES OF LIGHTING GENERATORS REGULATORS IN MOTOR VEHICLES
JPS5771238A (en) * 1980-10-17 1982-05-04 Matsushita Electric Works Ltd Emergency lamp firing circuit
US4388615A (en) * 1981-03-05 1983-06-14 Ford Barry S Testing emergency battery equipment
EP0086664A1 (en) * 1982-02-17 1983-08-24 Esquire Inc. Lamp dimming apparatus
US4496941A (en) * 1982-01-07 1985-01-29 Restbury Limited Switch protection device
GB2146859A (en) * 1983-09-13 1985-04-24 Black & Decker Inc Battery recharging circuit with indicator means
CN105357840A (en) * 2015-12-12 2016-02-24 重庆信德电子有限公司 Working method for emergency lamp
GB2541707A (en) * 2015-08-27 2017-03-01 Tridonic Gmbh & Co Kg Magnetic field-triggered luminaire status indication

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447556A1 (en) * 1979-01-27 1980-08-22 Bosch Gmbh Robert DEVICE FOR INDICATING FAILURES OF LIGHTING GENERATORS REGULATORS IN MOTOR VEHICLES
JPS5771238A (en) * 1980-10-17 1982-05-04 Matsushita Electric Works Ltd Emergency lamp firing circuit
US4388615A (en) * 1981-03-05 1983-06-14 Ford Barry S Testing emergency battery equipment
US4496941A (en) * 1982-01-07 1985-01-29 Restbury Limited Switch protection device
EP0086664A1 (en) * 1982-02-17 1983-08-24 Esquire Inc. Lamp dimming apparatus
GB2146859A (en) * 1983-09-13 1985-04-24 Black & Decker Inc Battery recharging circuit with indicator means
GB2541707A (en) * 2015-08-27 2017-03-01 Tridonic Gmbh & Co Kg Magnetic field-triggered luminaire status indication
CN105357840A (en) * 2015-12-12 2016-02-24 重庆信德电子有限公司 Working method for emergency lamp
CN105357840B (en) * 2015-12-12 2018-06-12 重庆信德电子有限公司 A kind of method of work of emergency light

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee