FR2409452A1 - Lighting unit with accurate focussing - consists of several lamps with reflectors mounted in common housing and connected in series - Google Patents

Lighting unit with accurate focussing - consists of several lamps with reflectors mounted in common housing and connected in series

Info

Publication number
FR2409452A1
FR2409452A1 FR7734972A FR7734972A FR2409452A1 FR 2409452 A1 FR2409452 A1 FR 2409452A1 FR 7734972 A FR7734972 A FR 7734972A FR 7734972 A FR7734972 A FR 7734972A FR 2409452 A1 FR2409452 A1 FR 2409452A1
Authority
FR
France
Prior art keywords
series
common housing
lamps
lighting unit
several lamps
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
FR7734972A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7734972A priority Critical patent/FR2409452A1/en
Publication of FR2409452A1 publication Critical patent/FR2409452A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

A beam of light can be focussed more accurately by using a number of small lamps grouped together instead of one lamp of the same total power. This is because the greater part of the larger filament of a larger bulb lies outside the focus of the lamp reflector. A multiple beam lamp consists of four lamps (9) with reflectors fitted inside a common housing (5). These smaller lamps, being suitable for a lower voltage are connected in series and if necessary a ballast resistance is also included in the circuit.
FR7734972A 1977-11-18 1977-11-18 Lighting unit with accurate focussing - consists of several lamps with reflectors mounted in common housing and connected in series Pending FR2409452A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7734972A FR2409452A1 (en) 1977-11-18 1977-11-18 Lighting unit with accurate focussing - consists of several lamps with reflectors mounted in common housing and connected in series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7734972A FR2409452A1 (en) 1977-11-18 1977-11-18 Lighting unit with accurate focussing - consists of several lamps with reflectors mounted in common housing and connected in series

Publications (1)

Publication Number Publication Date
FR2409452A1 true FR2409452A1 (en) 1979-06-15

Family

ID=9197856

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734972A Pending FR2409452A1 (en) 1977-11-18 1977-11-18 Lighting unit with accurate focussing - consists of several lamps with reflectors mounted in common housing and connected in series

Country Status (1)

Country Link
FR (1) FR2409452A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4014792A1 (en) * 1990-03-16 1991-09-26 Hoffmeister Leuchten Kg Electric radiation light with exchangeable reflector - has coupling surface of housing accepting auxiliary part and with arresters on inner surface
FR2769970A1 (en) * 1997-10-22 1999-04-23 Pietro Maria Castiglioni LIGHTING DEVICE FOR HIGH LIGHT INTENSITY LIGHT DIFFUSER
WO2011083223A1 (en) 2009-12-22 2011-07-14 Itron France Phase current measurement module for an electrical counter, provided with a current cut-off function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4014792A1 (en) * 1990-03-16 1991-09-26 Hoffmeister Leuchten Kg Electric radiation light with exchangeable reflector - has coupling surface of housing accepting auxiliary part and with arresters on inner surface
FR2769970A1 (en) * 1997-10-22 1999-04-23 Pietro Maria Castiglioni LIGHTING DEVICE FOR HIGH LIGHT INTENSITY LIGHT DIFFUSER
DE19849463B4 (en) * 1997-10-22 2010-07-22 Pietro Maria Castiglioni lighting device
WO2011083223A1 (en) 2009-12-22 2011-07-14 Itron France Phase current measurement module for an electrical counter, provided with a current cut-off function

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights